Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (199 commits)
  [MTD] NAND: Fix breakage all over the place
  [PATCH] NAND: fix remaining OOB length calculation
  [MTD] NAND Fixup NDFC merge brokeness
  [MTD NAND] S3C2410 driver cleanup
  [MTD NAND] s3c24x0 board: Fix clock handling, ensure proper initialisation.
  [JFFS2] Check CRC32 on dirent and data nodes each time they're read
  [JFFS2] When retiring nextblock, allocate a node_ref for the wasted space
  [JFFS2] Mark XATTR support as experimental, for now
  [JFFS2] Don't trust node headers before the CRC is checked.
  [MTD] Restore MTD_ROM and MTD_RAM types
  [MTD] assume mtd->writesize is 1 for NOR flashes
  [MTD NAND] Fix s3c2410 NAND driver so it at least _looks_ like it compiles
  [MTD] Prepare physmap for 64-bit-resources
  [JFFS2] Fix more breakage caused by janitorial meddling.
  [JFFS2] Remove stray __exit from jffs2_compressors_exit()
  [MTD] Allow alternate JFFS2 mount variant for root filesystem.
  [MTD] Disconnect struct mtd_info from ABI
  [MTD] replace MTD_RAM with MTD_GENERIC_TYPE
  [MTD] replace MTD_ROM with MTD_GENERIC_TYPE
  [MTD] remove a forgotten MTD_XIP
  ...

MAINTAINERS

@@ -1843,12 +1843,12 @@ S:     linux-scsi@vger.kernel.org
 W:     http://megaraid.lsilogic.com
 S:     Maintained
 
-MEMORY TECHNOLOGY DEVICES
+MEMORY TECHNOLOGY DEVICES (MTD)
 P:	David Woodhouse
 M:	dwmw2@infradead.org
 W:	http://www.linux-mtd.infradead.org/
 L:	linux-mtd@lists.infradead.org
-T:	git kernel.org:/pub/scm/linux/kernel/git/tglx/mtd-2.6.git
+T:	git git://git.infradead.org/mtd-2.6.git
 S:	Maintained
 
 MICROTEK X6 SCANNER

drivers/mtd/Kconfig

@@ -78,7 +78,7 @@ config MTD_REDBOOT_DIRECTORY_BLOCK
 	  option.
 
 	  The option specifies which Flash sectors holds the RedBoot
-	  partition table.  A zero or positive value gives an absolete
+	  partition table.  A zero or positive value gives an absolute
 	  erase block number. A negative value specifies a number of
 	  sectors before the end of the device.
 
@@ -103,7 +103,7 @@ config MTD_CMDLINE_PARTS
 	bool "Command line partition table parsing"
 	depends on MTD_PARTITIONS = "y"
 	---help---
-	  Allow generic configuration of the MTD paritition tables via the kernel
+	  Allow generic configuration of the MTD partition tables via the kernel
 	  command line. Multiple flash resources are supported for hardware where
 	  different kinds of flash memory are available.
 

drivers/mtd/chips/Kconfig

@@ -30,7 +30,6 @@ config MTD_JEDECPROBE
 
 config MTD_GEN_PROBE
 	tristate
-	select OBSOLETE_INTERMODULE
 
 config MTD_CFI_ADV_OPTIONS
 	bool "Flash chip driver advanced configuration options"

drivers/mtd/chips/Makefile

@@ -3,13 +3,6 @@
 #
 # $Id: Makefile.common,v 1.5 2005/11/07 11:14:22 gleixner Exp $
 
-#                       *** BIG UGLY NOTE ***
-#
-# The removal of get_module_symbol() and replacement with
-# inter_module_register() et al has introduced a link order dependency
-# here where previously there was none.  We now have to ensure that
-# the CFI command set drivers are linked before gen_probe.o
-
 obj-$(CONFIG_MTD)		+= chipreg.o
 obj-$(CONFIG_MTD_AMDSTD)	+= amd_flash.o
 obj-$(CONFIG_MTD_CFI)		+= cfi_probe.o

drivers/mtd/chips/amd_flash.c

@@ -97,7 +97,6 @@ struct amd_flash_private {
 	int interleave;
 	int numchips;
 	unsigned long chipshift;
-//	const char *im_name;
 	struct flchip chips[0];
 };
 
@@ -131,12 +130,6 @@ static struct mtd_chip_driver amd_flash_chipdrv = {
 	.module = THIS_MODULE
 };
 
-
-
-static const char im_name[] = "amd_flash";
-
-
-
 static inline __u32 wide_read(struct map_info *map, __u32 addr)
 {
 	if (map->buswidth == 1) {
@@ -737,6 +730,7 @@ static struct mtd_info *amd_flash_probe(struct map_info *map)
 		offset += dev_size;
 	}
 	mtd->type = MTD_NORFLASH;
+	mtd->writesize = 1;
 	mtd->flags = MTD_CAP_NORFLASH;
 	mtd->name = map->name;
 	mtd->erase = amd_flash_erase;

drivers/mtd/chips/cfi_cmdset_0001.c

@@ -331,13 +331,6 @@ read_pri_intelext(struct map_info *map, __u16 adr)
 	return extp;
 }
 
-/* This routine is made available to other mtd code via
- * inter_module_register.  It must only be accessed through
- * inter_module_get which will bump the use count of this module.  The
- * addresses passed back in cfi are valid as long as the use count of
- * this module is non-zero, i.e. between inter_module_get and
- * inter_module_put.  Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
- */
 struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
 {
 	struct cfi_private *cfi = map->fldrv_priv;
@@ -406,7 +399,7 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
 	for (i=0; i< cfi->numchips; i++) {
 		cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp;
 		cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp;
-		cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp;
+		cfi->chips[i].erase_time = 1000<<cfi->cfiq->BlockEraseTimeoutTyp;
 		cfi->chips[i].ref_point_counter = 0;
 		init_waitqueue_head(&(cfi->chips[i].wq));
 	}
@@ -415,6 +408,11 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
 
 	return cfi_intelext_setup(mtd);
 }
+struct mtd_info *cfi_cmdset_0003(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0001")));
+struct mtd_info *cfi_cmdset_0200(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0001")));
+EXPORT_SYMBOL_GPL(cfi_cmdset_0001);
+EXPORT_SYMBOL_GPL(cfi_cmdset_0003);
+EXPORT_SYMBOL_GPL(cfi_cmdset_0200);
 
 static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
 {
@@ -547,12 +545,12 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd,
 		if (extp->MinorVersion >= '4') {
 			struct cfi_intelext_programming_regioninfo *prinfo;
 			prinfo = (struct cfi_intelext_programming_regioninfo *)&extp->extra[offs];
-			MTD_PROGREGION_SIZE(mtd) = cfi->interleave << prinfo->ProgRegShift;
+			mtd->writesize = cfi->interleave << prinfo->ProgRegShift;
 			MTD_PROGREGION_CTRLMODE_VALID(mtd) = cfi->interleave * prinfo->ControlValid;
 			MTD_PROGREGION_CTRLMODE_INVALID(mtd) = cfi->interleave * prinfo->ControlInvalid;
-			mtd->flags |= MTD_PROGRAM_REGIONS;
+			mtd->flags &= ~MTD_BIT_WRITEABLE;
 			printk(KERN_DEBUG "%s: program region size/ctrl_valid/ctrl_inval = %d/%d/%d\n",
-			       map->name, MTD_PROGREGION_SIZE(mtd),
+			       map->name, mtd->writesize,
 			       MTD_PROGREGION_CTRLMODE_VALID(mtd),
 			       MTD_PROGREGION_CTRLMODE_INVALID(mtd));
 		}
@@ -896,26 +894,33 @@ static void __xipram xip_enable(struct map_info *map, struct flchip *chip,
 
 /*
  * When a delay is required for the flash operation to complete, the
- * xip_udelay() function is polling for both the given timeout and pending
- * (but still masked) hardware interrupts.  Whenever there is an interrupt
- * pending then the flash erase or write operation is suspended, array mode
- * restored and interrupts unmasked.  Task scheduling might also happen at that
- * point.  The CPU eventually returns from the interrupt or the call to
- * schedule() and the suspended flash operation is resumed for the remaining
- * of the delay period.
+ * xip_wait_for_operation() function is polling for both the given timeout
+ * and pending (but still masked) hardware interrupts.  Whenever there is an
+ * interrupt pending then the flash erase or write operation is suspended,
+ * array mode restored and interrupts unmasked.  Task scheduling might also
+ * happen at that point.  The CPU eventually returns from the interrupt or
+ * the call to schedule() and the suspended flash operation is resumed for
+ * the remaining of the delay period.
  *
  * Warning: this function _will_ fool interrupt latency tracing tools.
  */
 
-static void __xipram xip_udelay(struct map_info *map, struct flchip *chip,
-				unsigned long adr, int usec)
+static int __xipram xip_wait_for_operation(
+		struct map_info *map, struct flchip *chip,
+		unsigned long adr, int *chip_op_time )
 {
 	struct cfi_private *cfi = map->fldrv_priv;
 	struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
 	map_word status, OK = CMD(0x80);
-	unsigned long suspended, start = xip_currtime();
+	unsigned long usec, suspended, start, done;
 	flstate_t oldstate, newstate;
 
+       	start = xip_currtime();
+	usec = *chip_op_time * 8;
+	if (usec == 0)
+		usec = 500000;
+	done = 0;
+
 	do {
 		cpu_relax();
 		if (xip_irqpending() && cfip &&
@@ -932,9 +937,9 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip,
 			 * we resume the whole thing at once).  Yes, it
 			 * can happen!
 			 */
+			usec -= done;
 			map_write(map, CMD(0xb0), adr);
 			map_write(map, CMD(0x70), adr);
-			usec -= xip_elapsed_since(start);
 			suspended = xip_currtime();
 			do {
 				if (xip_elapsed_since(suspended) > 100000) {
@@ -944,7 +949,7 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip,
 					 * This is a critical error but there
 					 * is not much we can do here.
 					 */
-					return;
+					return -EIO;
 				}
 				status = map_read(map, adr);
 			} while (!map_word_andequal(map, status, OK, OK));
@@ -1004,65 +1009,107 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip,
 			xip_cpu_idle();
 		}
 		status = map_read(map, adr);
+		done = xip_elapsed_since(start);
 	} while (!map_word_andequal(map, status, OK, OK)
-		 && xip_elapsed_since(start) < usec);
-}
+		 && done < usec);
 
-#define UDELAY(map, chip, adr, usec)  xip_udelay(map, chip, adr, usec)
+	return (done >= usec) ? -ETIME : 0;
+}
 
 /*
  * The INVALIDATE_CACHED_RANGE() macro is normally used in parallel while
  * the flash is actively programming or erasing since we have to poll for
  * the operation to complete anyway.  We can't do that in a generic way with
  * a XIP setup so do it before the actual flash operation in this case
- * and stub it out from INVALIDATE_CACHE_UDELAY.
+ * and stub it out from INVAL_CACHE_AND_WAIT.
  */
 #define XIP_INVAL_CACHED_RANGE(map, from, size)  \
 	INVALIDATE_CACHED_RANGE(map, from, size)
 
-#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec)  \
-	UDELAY(map, chip, cmd_adr, usec)
-
-/*
- * Extra notes:
- *
- * Activating this XIP support changes the way the code works a bit.  For
- * example the code to suspend the current process when concurrent access
- * happens is never executed because xip_udelay() will always return with the
- * same chip state as it was entered with.  This is why there is no care for
- * the presence of add_wait_queue() or schedule() calls from within a couple
- * xip_disable()'d  areas of code, like in do_erase_oneblock for example.
- * The queueing and scheduling are always happening within xip_udelay().
- *
- * Similarly, get_chip() and put_chip() just happen to always be executed
- * with chip->state set to FL_READY (or FL_XIP_WHILE_*) where flash state
- * is in array mode, therefore never executing many cases therein and not
- * causing any problem with XIP.
- */
+#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \
+	xip_wait_for_operation(map, chip, cmd_adr, p_usec)
 
 #else
 
 #define xip_disable(map, chip, adr)
 #define xip_enable(map, chip, adr)
 #define XIP_INVAL_CACHED_RANGE(x...)
+#define INVAL_CACHE_AND_WAIT inval_cache_and_wait_for_operation
+
+static int inval_cache_and_wait_for_operation(
+		struct map_info *map, struct flchip *chip,
+		unsigned long cmd_adr, unsigned long inval_adr, int inval_len,
+		int *chip_op_time )
+{
+	struct cfi_private *cfi = map->fldrv_priv;
+	map_word status, status_OK = CMD(0x80);
+	int z, chip_state = chip->state;
+	unsigned long timeo;
+
+	spin_unlock(chip->mutex);
+	if (inval_len)
+		INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len);
+	if (*chip_op_time)
+		cfi_udelay(*chip_op_time);
+	spin_lock(chip->mutex);
+
+	timeo = *chip_op_time * 8 * HZ / 1000000;
+	if (timeo < HZ/2)
+		timeo = HZ/2;
+	timeo += jiffies;
+
+	z = 0;
+	for (;;) {
+		if (chip->state != chip_state) {
+			/* Someone's suspended the operation: sleep */
+			DECLARE_WAITQUEUE(wait, current);
+
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			add_wait_queue(&chip->wq, &wait);
+			spin_unlock(chip->mutex);
+			schedule();
+			remove_wait_queue(&chip->wq, &wait);
+			timeo = jiffies + (HZ / 2); /* FIXME */
+			spin_lock(chip->mutex);
+			continue;
+		}
 
-#define UDELAY(map, chip, adr, usec)  \
-do {  \
-	spin_unlock(chip->mutex);  \
-	cfi_udelay(usec);  \
-	spin_lock(chip->mutex);  \
-} while (0)
-
-#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec)  \
-do {  \
-	spin_unlock(chip->mutex);  \
-	INVALIDATE_CACHED_RANGE(map, adr, len);  \
-	cfi_udelay(usec);  \
-	spin_lock(chip->mutex);  \
-} while (0)
+		status = map_read(map, cmd_adr);
+		if (map_word_andequal(map, status, status_OK, status_OK))
+			break;
+
+		/* OK Still waiting */
+		if (time_after(jiffies, timeo)) {
+			map_write(map, CMD(0x70), cmd_adr);
+			chip->state = FL_STATUS;
+			return -ETIME;
+		}
+
+		/* Latency issues. Drop the lock, wait a while and retry */
+		z++;
+		spin_unlock(chip->mutex);
+		cfi_udelay(1);
+		spin_lock(chip->mutex);
+	}
+
+	if (!z) {
+		if (!--(*chip_op_time))
+			*chip_op_time = 1;
+	} else if (z > 1)
+		++(*chip_op_time);
+
+	/* Done and happy. */
+ 	chip->state = FL_STATUS;
+	return 0;
+}
 
 #endif
 
+#define WAIT_TIMEOUT(map, chip, adr, udelay) \
+	({ int __udelay = (udelay); \
+	   INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); })
+
+
 static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len)
 {
 	unsigned long cmd_addr;
@@ -1252,14 +1299,11 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
 				     unsigned long adr, map_word datum, int mode)
 {
 	struct cfi_private *cfi = map->fldrv_priv;
-	map_word status, status_OK, write_cmd;
-	unsigned long timeo;
-	int z, ret=0;
+	map_word status, write_cmd;
+	int ret=0;
 
 	adr += chip->start;
 
-	/* Let's determine those according to the interleave only once */
-	status_OK = CMD(0x80);
 	switch (mode) {
 	case FL_WRITING:
 		write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0x40) : CMD(0x41);
@@ -1285,57 +1329,17 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
 	map_write(map, datum, adr);
 	chip->state = mode;
 
-	INVALIDATE_CACHE_UDELAY(map, chip, adr,
-				adr, map_bankwidth(map),
-				chip->word_write_time);
-
-	timeo = jiffies + (HZ/2);
-	z = 0;
-	for (;;) {
-		if (chip->state != mode) {
-			/* Someone's suspended the write. Sleep */
-			DECLARE_WAITQUEUE(wait, current);
-
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			add_wait_queue(&chip->wq, &wait);
-			spin_unlock(chip->mutex);
-			schedule();
-			remove_wait_queue(&chip->wq, &wait);
-			timeo = jiffies + (HZ / 2); /* FIXME */
-			spin_lock(chip->mutex);
-			continue;
-		}
-
-		status = map_read(map, adr);
-		if (map_word_andequal(map, status, status_OK, status_OK))
-			break;
-
-		/* OK Still waiting */
-		if (time_after(jiffies, timeo)) {
-			map_write(map, CMD(0x70), adr);
-			chip->state = FL_STATUS;
-			xip_enable(map, chip, adr);
-			printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
-			ret = -EIO;
-			goto out;
-		}
-
-		/* Latency issues. Drop the lock, wait a while and retry */
-		z++;
-		UDELAY(map, chip, adr, 1);
-	}
-	if (!z) {
-		chip->word_write_time--;
-		if (!chip->word_write_time)
-			chip->word_write_time = 1;
+	ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
+				   adr, map_bankwidth(map),
+				   &chip->word_write_time);
+	if (ret) {
+		xip_enable(map, chip, adr);
+		printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
+		goto out;
 	}
-	if (z > 1)
-		chip->word_write_time++;
-
-	/* Done and happy. */
-	chip->state = FL_STATUS;
 
 	/* check for errors */
+	status = map_read(map, adr);
 	if (map_word_bitsset(map, status, CMD(0x1a))) {
 		unsigned long chipstatus = MERGESTATUS(status);
 
@@ -1452,9 +1456,9 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 				    unsigned long *pvec_seek, int len)
 {
 	struct cfi_private *cfi = map->fldrv_priv;
-	map_word status, status_OK, write_cmd, datum;
-	unsigned long cmd_adr, timeo;
-	int wbufsize, z, ret=0, word_gap, words;
+	map_word status, write_cmd, datum;
+	unsigned long cmd_adr;
+	int ret, wbufsize, word_gap, words;
 	const struct kvec *vec;
 	unsigned long vec_seek;
 
@@ -1463,7 +1467,6 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 	cmd_adr = adr & ~(wbufsize-1);
 
 	/* Let's determine this according to the interleave only once */
-	status_OK = CMD(0x80);
 	write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0xe8) : CMD(0xe9);
 
 	spin_lock(chip->mutex);
@@ -1477,12 +1480,14 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 	ENABLE_VPP(map);
 	xip_disable(map, chip, cmd_adr);
 
-	/* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set
+	/* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set
 	   [...], the device will not accept any more Write to Buffer commands".
 	   So we must check here and reset those bits if they're set. Otherwise
 	   we're just pissing in the wind */
-	if (chip->state != FL_STATUS)
+	if (chip->state != FL_STATUS) {
 		map_write(map, CMD(0x70), cmd_adr);
+		chip->state = FL_STATUS;
+	}
 	status = map_read(map, cmd_adr);
 	if (map_word_bitsset(map, status, CMD(0x30))) {
 		xip_enable(map, chip, cmd_adr);
@@ -1493,32 +1498,20 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 	}
 
 	chip->state = FL_WRITING_TO_BUFFER;
-
-	z = 0;
-	for (;;) {
-		map_write(map, write_cmd, cmd_adr);
-
+	map_write(map, write_cmd, cmd_adr);
+	ret = WAIT_TIMEOUT(map, chip, cmd_adr, 0);
+	if (ret) {
+		/* Argh. Not ready for write to buffer */
+		map_word Xstatus = map_read(map, cmd_adr);
+		map_write(map, CMD(0x70), cmd_adr);
+		chip->state = FL_STATUS;
 		status = map_read(map, cmd_adr);
-		if (map_word_andequal(map, status, status_OK, status_OK))
-			break;
-
-		UDELAY(map, chip, cmd_adr, 1);
-
-		if (++z > 20) {
-			/* Argh. Not ready for write to buffer */
-			map_word Xstatus;
-			map_write(map, CMD(0x70), cmd_adr);
-			chip->state = FL_STATUS;
-			Xstatus = map_read(map, cmd_adr);
-			/* Odd. Clear status bits */
-			map_write(map, CMD(0x50), cmd_adr);
-			map_write(map, CMD(0x70), cmd_adr);
-			xip_enable(map, chip, cmd_adr);
-			printk(KERN_ERR "%s: Chip not ready for buffer write. status = %lx, Xstatus = %lx\n",
-			       map->name, status.x[0], Xstatus.x[0]);
-			ret = -EIO;
-			goto out;
-		}
+		map_write(map, CMD(0x50), cmd_adr);
+		map_write(map, CMD(0x70), cmd_adr);
+		xip_enable(map, chip, cmd_adr);
+		printk(KERN_ERR "%s: Chip not ready for buffer write. Xstatus = %lx, status = %lx\n",
+				map->name, Xstatus.x[0], status.x[0]);
+		goto out;
 	}
 
 	/* Figure out the number of words to write */
@@ -1573,56 +1566,19 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 	map_write(map, CMD(0xd0), cmd_adr);
 	chip->state = FL_WRITING;
 
-	INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr,
-				adr, len,
-				chip->buffer_write_time);
-
-	timeo = jiffies + (HZ/2);
-	z = 0;
-	for (;;) {
-		if (chip->state != FL_WRITING) {
-			/* Someone's suspended the write. Sleep */
-			DECLARE_WAITQUEUE(wait, current);
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			add_wait_queue(&chip->wq, &wait);
-			spin_unlock(chip->mutex);
-			schedule();
-			remove_wait_queue(&chip->wq, &wait);
-			timeo = jiffies + (HZ / 2); /* FIXME */
-			spin_lock(chip->mutex);
-			continue;
-		}
-
-		status = map_read(map, cmd_adr);
-		if (map_word_andequal(map, status, status_OK, status_OK))
-			break;
-
-		/* OK Still waiting */
-		if (time_after(jiffies, timeo)) {
-			map_write(map, CMD(0x70), cmd_adr);
-			chip->state = FL_STATUS;
-			xip_enable(map, chip, cmd_adr);
-			printk(KERN_ERR "%s: buffer write error (status timeout)\n", map->name);
-			ret = -EIO;
-			goto out;
-		}
-
-		/* Latency issues. Drop the lock, wait a while and retry */
-		z++;
-		UDELAY(map, chip, cmd_adr, 1);
-	}
-	if (!z) {
-		chip->buffer_write_time--;
-		if (!chip->buffer_write_time)
-			chip->buffer_write_time = 1;
+	ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr,
+				   adr, len,
+				   &chip->buffer_write_time);
+	if (ret) {
+		map_write(map, CMD(0x70), cmd_adr);
+		chip->state = FL_STATUS;
+		xip_enable(map, chip, cmd_adr);
+		printk(KERN_ERR "%s: buffer write error (status timeout)\n", map->name);
+		goto out;
 	}
-	if (z > 1)
-		chip->buffer_write_time++;
-
-	/* Done and happy. */
- 	chip->state = FL_STATUS;
 
 	/* check for errors */
+	status = map_read(map, cmd_adr);
 	if (map_word_bitsset(map, status, CMD(0x1a))) {
 		unsigned long chipstatus = MERGESTATUS(status);
 
@@ -1693,6 +1649,11 @@ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs,
 			if (chipnum == cfi->numchips)
 				return 0;
 		}
+
+		/* Be nice and reschedule with the chip in a usable state for other
+		   processes. */
+		cond_resched();
+
 	} while (len);
 
 	return 0;
@@ -1713,17 +1674,12 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 				      unsigned long adr, int len, void *thunk)
 {
 	struct cfi_private *cfi = map->fldrv_priv;
-	map_word status, status_OK;
-	unsigned long timeo;
+	map_word status;
 	int retries = 3;
-	DECLARE_WAITQUEUE(wait, current);
-	int ret = 0;
+	int ret;
 
 	adr += chip->start;
 
-	/* Let's determine this according to the interleave only once */
-	status_OK = CMD(0x80);
-
  retry:
 	spin_lock(chip->mutex);
 	ret = get_chip(map, chip, adr, FL_ERASING);
@@ -1745,48 +1701,15 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 	chip->state = FL_ERASING;
 	chip->erase_suspended = 0;
 
-	INVALIDATE_CACHE_UDELAY(map, chip, adr,
-				adr, len,
-				chip->erase_time*1000/2);
-
-	/* FIXME. Use a timer to check this, and return immediately. */
-	/* Once the state machine's known to be working I'll do that */
-
-	timeo = jiffies + (HZ*20);
-	for (;;) {
-		if (chip->state != FL_ERASING) {
-			/* Someone's suspended the erase. Sleep */
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			add_wait_queue(&chip->wq, &wait);
-			spin_unlock(chip->mutex);
-			schedule();
-			remove_wait_queue(&chip->wq, &wait);
-			spin_lock(chip->mutex);
-			continue;
-		}
-		if (chip->erase_suspended) {
-			/* This erase was suspended and resumed.
-			   Adjust the timeout */
-			timeo = jiffies + (HZ*20); /* FIXME */
-			chip->erase_suspended = 0;
-		}
-
-		status = map_read(map, adr);
-		if (map_word_andequal(map, status, status_OK, status_OK))
-			break;
-
-		/* OK Still waiting */
-		if (time_after(jiffies, timeo)) {
-			map_write(map, CMD(0x70), adr);
-			chip->state = FL_STATUS;
-			xip_enable(map, chip, adr);
-			printk(KERN_ERR "%s: block erase error: (status timeout)\n", map->name);
-			ret = -EIO;
-			goto out;
-		}
-
-		/* Latency issues. Drop the lock, wait a while and retry */
-		UDELAY(map, chip, adr, 1000000/HZ);
+	ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
+				   adr, len,
+				   &chip->erase_time);
+	if (ret) {
+		map_write(map, CMD(0x70), adr);
+		chip->state = FL_STATUS;
+		xip_enable(map, chip, adr);
+		printk(KERN_ERR "%s: block erase error: (status timeout)\n", map->name);
+		goto out;
 	}
 
 	/* We've broken this before. It doesn't hurt to be safe */
@@ -1815,7 +1738,6 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 			ret = -EIO;
 		} else if (chipstatus & 0x20 && retries--) {
 			printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus);
-			timeo = jiffies + HZ;
 			put_chip(map, chip, adr);
 			spin_unlock(chip->mutex);
 			goto retry;
@@ -1921,15 +1843,11 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
 {
 	struct cfi_private *cfi = map->fldrv_priv;
 	struct cfi_pri_intelext *extp = cfi->cmdset_priv;
-	map_word status, status_OK;
-	unsigned long timeo = jiffies + HZ;
+	int udelay;
 	int ret;
 
 	adr += chip->start;
 
-	/* Let's determine this according to the interleave only once */
-	status_OK = CMD(0x80);
-
 	spin_lock(chip->mutex);
 	ret = get_chip(map, chip, adr, FL_LOCKING);
 	if (ret) {
@@ -1954,41 +1872,21 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
 	 * If Instant Individual Block Locking supported then no need
 	 * to delay.
 	 */
+	udelay = (!extp || !(extp->FeatureSupport & (1 << 5))) ? 1000000/HZ : 0;
 
-	if (!extp || !(extp->FeatureSupport & (1 << 5)))
-		UDELAY(map, chip, adr, 1000000/HZ);
-
-	/* FIXME. Use a timer to check this, and return immediately. */
-	/* Once the state machine's known to be working I'll do that */
-
-	timeo = jiffies + (HZ*20);
-	for (;;) {
-
-		status = map_read(map, adr);
-		if (map_word_andequal(map, status, status_OK, status_OK))
-			break;
-
-		/* OK Still waiting */
-		if (time_after(jiffies, timeo)) {
-			map_write(map, CMD(0x70), adr);
-			chip->state = FL_STATUS;
-			xip_enable(map, chip, adr);
-			printk(KERN_ERR "%s: block unlock error: (status timeout)\n", map->name);
-			put_chip(map, chip, adr);
-			spin_unlock(chip->mutex);
-			return -EIO;
-		}
-
-		/* Latency issues. Drop the lock, wait a while and retry */
-		UDELAY(map, chip, adr, 1);
+	ret = WAIT_TIMEOUT(map, chip, adr, udelay);
+	if (ret) {
+		map_write(map, CMD(0x70), adr);
+		chip->state = FL_STATUS;
+		xip_enable(map, chip, adr);
+		printk(KERN_ERR "%s: block unlock error: (status timeout)\n", map->name);
+		goto out;
 	}
 
-	/* Done and happy. */
-	chip->state = FL_STATUS;
 	xip_enable(map, chip, adr);
-	put_chip(map, chip, adr);
+out:	put_chip(map, chip, adr);
 	spin_unlock(chip->mutex);
-	return 0;
+	return ret;
 }
 
 static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
@@ -2445,28 +2343,8 @@ static void cfi_intelext_destroy(struct mtd_info *mtd)
 	kfree(mtd->eraseregions);
 }
 
-static char im_name_0001[] = "cfi_cmdset_0001";
-static char im_name_0003[] = "cfi_cmdset_0003";
-static char im_name_0200[] = "cfi_cmdset_0200";
-
-static int __init cfi_intelext_init(void)
-{
-	inter_module_register(im_name_0001, THIS_MODULE, &cfi_cmdset_0001);
-	inter_module_register(im_name_0003, THIS_MODULE, &cfi_cmdset_0001);
-	inter_module_register(im_name_0200, THIS_MODULE, &cfi_cmdset_0001);
-	return 0;
-}
-
-static void __exit cfi_intelext_exit(void)
-{
-	inter_module_unregister(im_name_0001);
-	inter_module_unregister(im_name_0003);
-	inter_module_unregister(im_name_0200);
-}
-
-module_init(cfi_intelext_init);
-module_exit(cfi_intelext_exit);
-
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al.");
 MODULE_DESCRIPTION("MTD chip driver for Intel/Sharp flash chips");
+MODULE_ALIAS("cfi_cmdset_0003");
+MODULE_ALIAS("cfi_cmdset_0200");

drivers/mtd/chips/cfi_cmdset_0002.c

@@ -236,6 +236,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
 	mtd->resume  = cfi_amdstd_resume;
 	mtd->flags   = MTD_CAP_NORFLASH;
 	mtd->name    = map->name;
+	mtd->writesize = 1;
 
 	if (cfi->cfi_mode==CFI_MODE_CFI){
 		unsigned char bootloc;
@@ -326,7 +327,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
 
 	return cfi_amdstd_setup(mtd);
 }
-
+EXPORT_SYMBOL_GPL(cfi_cmdset_0002);
 
 static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd)
 {
@@ -1758,25 +1759,6 @@ static void cfi_amdstd_destroy(struct mtd_info *mtd)
 	kfree(mtd->eraseregions);
 }
 
-static char im_name[]="cfi_cmdset_0002";
-
-
-static int __init cfi_amdstd_init(void)
-{
-	inter_module_register(im_name, THIS_MODULE, &cfi_cmdset_0002);
-	return 0;
-}
-
-
-static void __exit cfi_amdstd_exit(void)
-{
-	inter_module_unregister(im_name);
-}
-
-
-module_init(cfi_amdstd_init);
-module_exit(cfi_amdstd_exit);
-
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Crossnet Co. <info@crossnet.co.jp> et al.");
 MODULE_DESCRIPTION("MTD chip driver for AMD/Fujitsu flash chips");

drivers/mtd/chips/cfi_cmdset_0020.c

@@ -162,6 +162,7 @@ struct mtd_info *cfi_cmdset_0020(struct map_info *map, int primary)
 
 	return cfi_staa_setup(map);
 }
+EXPORT_SYMBOL_GPL(cfi_cmdset_0020);
 
 static struct mtd_info *cfi_staa_setup(struct map_info *map)
 {
@@ -237,9 +238,8 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map)
 	mtd->unlock = cfi_staa_unlock;
 	mtd->suspend = cfi_staa_suspend;
 	mtd->resume = cfi_staa_resume;
-	mtd->flags = MTD_CAP_NORFLASH;
-	mtd->flags |= MTD_ECC; /* FIXME: Not all STMicro flashes have this */
-	mtd->eccsize = 8; /* FIXME: Should be 0 for STMicro flashes w/out ECC */
+	mtd->flags = MTD_CAP_NORFLASH & ~MTD_BIT_WRITEABLE;
+	mtd->writesize = 8; /* FIXME: Should be 0 for STMicro flashes w/out ECC */
 	map->fldrv = &cfi_staa_chipdrv;
 	__module_get(THIS_MODULE);
 	mtd->name = map->name;
@@ -1410,20 +1410,4 @@ static void cfi_staa_destroy(struct mtd_info *mtd)
 	kfree(cfi);
 }
 
-static char im_name[]="cfi_cmdset_0020";
-
-static int __init cfi_staa_init(void)
-{
-	inter_module_register(im_name, THIS_MODULE, &cfi_cmdset_0020);
-	return 0;
-}
-
-static void __exit cfi_staa_exit(void)
-{
-	inter_module_unregister(im_name);
-}
-
-module_init(cfi_staa_init);
-module_exit(cfi_staa_exit);
-
 MODULE_LICENSE("GPL");

drivers/mtd/chips/cfi_probe.c

@@ -349,12 +349,12 @@ static void print_cfi_ident(struct cfi_ident *cfip)
 	else
 		printk("No Vpp line\n");
 
-	printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp);
-	printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp));
+	printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp);
+	printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp));
 
 	if (cfip->BufWriteTimeoutTyp || cfip->BufWriteTimeoutMax) {
-		printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp);
-		printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp));
+		printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp);
+		printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp));
 	}
 	else
 		printk("Full buffer write not supported\n");

drivers/mtd/chips/gen_probe.c

@@ -37,8 +37,15 @@ struct mtd_info *mtd_do_chip_probe(struct map_info *map, struct chip_probe *cp)
 	if (!mtd)
 		mtd = check_cmd_set(map, 0); /* Then the secondary */
 
-	if (mtd)
+	if (mtd) {
+		if (mtd->size > map->size) {
+			printk(KERN_WARNING "Reducing visibility of %ldKiB chip to %ldKiB\n",
+			       (unsigned long)mtd->size >> 10, 
+			       (unsigned long)map->size >> 10);
+			mtd->size = map->size;
+		}
 		return mtd;
+	}
 
 	printk(KERN_WARNING"gen_probe: No supported Vendor Command Set found\n");
 
@@ -100,7 +107,12 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi
 	 * Align bitmap storage size to full byte.
 	 */
 	max_chips = map->size >> cfi.chipshift;
-	mapsize = (max_chips / 8) + ((max_chips % 8) ? 1 : 0);
+	if (!max_chips) {
+		printk(KERN_WARNING "NOR chip too large to fit in mapping. Attempting to cope...\n");
+		max_chips = 1;
+	}
+
+	mapsize = (max_chips + BITS_PER_LONG-1) / BITS_PER_LONG;
 	chip_map = kmalloc(mapsize, GFP_KERNEL);
 	if (!chip_map) {
 		printk(KERN_WARNING "%s: kmalloc failed for CFI chip map\n", map->name);
@@ -194,25 +206,28 @@ static inline struct mtd_info *cfi_cmdset_unknown(struct map_info *map,
 {
 	struct cfi_private *cfi = map->fldrv_priv;
 	__u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID;
-#if defined(CONFIG_MODULES) && defined(HAVE_INTER_MODULE)
-	char probename[32];
+#ifdef CONFIG_MODULES
+	char probename[16+sizeof(MODULE_SYMBOL_PREFIX)];
 	cfi_cmdset_fn_t *probe_function;
 
-	sprintf(probename, "cfi_cmdset_%4.4X", type);
+	sprintf(probename, MODULE_SYMBOL_PREFIX "cfi_cmdset_%4.4X", type);
 
-	probe_function = inter_module_get_request(probename, probename);
+	probe_function = __symbol_get(probename);
+	if (!probe_function) {
+		request_module(probename + sizeof(MODULE_SYMBOL_PREFIX) - 1);
+		probe_function = __symbol_get(probename);
+	}
 
 	if (probe_function) {
 		struct mtd_info *mtd;
 
 		mtd = (*probe_function)(map, primary);
 		/* If it was happy, it'll have increased its own use count */
-		inter_module_put(probename);
+		symbol_put_addr(probe_function);
 		return mtd;
 	}
 #endif
-	printk(KERN_NOTICE "Support for command set %04X not present\n",
-	       type);
+	printk(KERN_NOTICE "Support for command set %04X not present\n", type);
 
 	return NULL;
 }
@@ -226,12 +241,8 @@ static struct mtd_info *check_cmd_set(struct map_info *map, int primary)
 		return NULL;
 
 	switch(type){
-		/* Urgh. Ifdefs. The version with weak symbols was
-		 * _much_ nicer. Shame it didn't seem to work on
-		 * anything but x86, really.
-		 * But we can't rely in inter_module_get() because
-		 * that'd mean we depend on link order.
-		 */
+		/* We need these for the !CONFIG_MODULES case,
+		   because symbol_get() doesn't work there */
 #ifdef CONFIG_MTD_CFI_INTELEXT
 	case 0x0001:
 	case 0x0003:
@@ -246,9 +257,9 @@ static struct mtd_info *check_cmd_set(struct map_info *map, int primary)
         case 0x0020:
 		return cfi_cmdset_0020(map, primary);
 #endif
+	default:
+		return cfi_cmdset_unknown(map, primary);
 	}
-
-	return cfi_cmdset_unknown(map, primary);
 }
 
 MODULE_LICENSE("GPL");

drivers/mtd/chips/map_ram.c

@@ -70,7 +70,7 @@ static struct mtd_info *map_ram_probe(struct map_info *map)
 	mtd->read = mapram_read;
 	mtd->write = mapram_write;
 	mtd->sync = mapram_nop;
-	mtd->flags = MTD_CAP_RAM | MTD_VOLATILE;
+	mtd->flags = MTD_CAP_RAM;
 
 	mtd->erasesize = PAGE_SIZE;
  	while(mtd->size & (mtd->erasesize - 1))

drivers/mtd/chips/map_rom.c

@@ -46,9 +46,7 @@ static struct mtd_info *map_rom_probe(struct map_info *map)
 	mtd->write = maprom_write;
 	mtd->sync = maprom_nop;
 	mtd->flags = MTD_CAP_ROM;
-	mtd->erasesize = 131072;
- 	while(mtd->size & (mtd->erasesize - 1))
-		mtd->erasesize >>= 1;
+	mtd->erasesize = map->size;
 
 	__module_get(THIS_MODULE);
 	return mtd;

drivers/mtd/chips/sharp.c

@@ -140,6 +140,7 @@ static struct mtd_info *sharp_probe(struct map_info *map)
 	mtd->suspend = sharp_suspend;
 	mtd->resume = sharp_resume;
 	mtd->flags = MTD_CAP_NORFLASH;
+	mtd->writesize = 1;
 	mtd->name = map->name;
 
 	memset(sharp, 0, sizeof(*sharp));

drivers/mtd/devices/Kconfig

@@ -47,6 +47,11 @@ config MTD_MS02NV
 	  accelerator.  Say Y here if you have a DECstation 5000/2x0 or a
 	  DECsystem 5900 equipped with such a module.
 
+	  If you want to compile this driver as a module ( = code which can be
+	  inserted in and removed from the running kernel whenever you want),
+	  say M here and read <file:Documentation/modules.txt>.  The module will
+	  be called ms02-nv.o.
+
 config MTD_DATAFLASH
 	tristate "Support for AT45xxx DataFlash"
 	depends on MTD && SPI_MASTER && EXPERIMENTAL
@@ -209,7 +214,6 @@ config MTD_DOC2001PLUS
 config MTD_DOCPROBE
 	tristate
 	select MTD_DOCECC
-	select OBSOLETE_INTERMODULE
 
 config MTD_DOCECC
 	tristate

drivers/mtd/devices/Makefile

@@ -3,13 +3,6 @@
 #
 # $Id: Makefile.common,v 1.7 2004/12/22 17:51:15 joern Exp $
 
-#                       *** BIG UGLY NOTE ***
-#
-# The removal of get_module_symbol() and replacement with
-# inter_module_register() et al has introduced a link order dependency
-# here where previously there was none.  We now have to ensure that
-# doc200[01].o are linked before docprobe.o
-
 obj-$(CONFIG_MTD_DOC2000)	+= doc2000.o
 obj-$(CONFIG_MTD_DOC2001)	+= doc2001.o
 obj-$(CONFIG_MTD_DOC2001PLUS)	+= doc2001plus.o

drivers/mtd/devices/block2mtd.c

@@ -4,7 +4,7 @@
  * block2mtd.c - create an mtd from a block device
  *
  * Copyright (C) 2001,2002	Simon Evans <spse@secret.org.uk>
- * Copyright (C) 2004,2005	Jörn Engel <joern@wh.fh-wedel.de>
+ * Copyright (C) 2004-2006	Jörn Engel <joern@wh.fh-wedel.de>
  *
  * Licence: GPL
  */
@@ -331,7 +331,6 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
 	dev->mtd.writev = default_mtd_writev;
 	dev->mtd.sync = block2mtd_sync;
 	dev->mtd.read = block2mtd_read;
-	dev->mtd.readv = default_mtd_readv;
 	dev->mtd.priv = dev;
 	dev->mtd.owner = THIS_MODULE;
 
@@ -351,6 +350,12 @@ devinit_err:
 }
 
 
+/* This function works similar to reguler strtoul.  In addition, it
+ * allows some suffixes for a more human-readable number format:
+ * ki, Ki, kiB, KiB	- multiply result with 1024
+ * Mi, MiB		- multiply result with 1024^2
+ * Gi, GiB		- multiply result with 1024^3
+ */
 static int ustrtoul(const char *cp, char **endp, unsigned int base)
 {
 	unsigned long result = simple_strtoul(cp, endp, base);
@@ -359,11 +364,16 @@ static int ustrtoul(const char *cp, char **endp, unsigned int base)
 		result *= 1024;
 	case 'M':
 		result *= 1024;
+	case 'K':
 	case 'k':
 		result *= 1024;
 	/* By dwmw2 editorial decree, "ki", "Mi" or "Gi" are to be used. */
-		if ((*endp)[1] == 'i')
-			(*endp) += 2;
+		if ((*endp)[1] == 'i') {
+			if ((*endp)[2] == 'B')
+				(*endp) += 3;
+			else
+				(*endp) += 2;
+		}
 	}
 	return result;
 }
@@ -418,7 +428,8 @@ static inline void kill_final_newline(char *str)
 
 static int block2mtd_setup(const char *val, struct kernel_param *kp)
 {
-	char buf[80+12], *str=buf; /* 80 for device, 12 for erase size */
+	char buf[80+12]; /* 80 for device, 12 for erase size */
+	char *str = buf;
 	char *token[2];
 	char *name;
 	size_t erase_size = PAGE_SIZE;
@@ -430,7 +441,7 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp)
 	strcpy(str, val);
 	kill_final_newline(str);
 
-	for (i=0; i<2; i++)
+	for (i = 0; i < 2; i++)
 		token[i] = strsep(&str, ",");
 
 	if (str)
@@ -449,8 +460,10 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp)
 
 	if (token[1]) {
 		ret = parse_num(&erase_size, token[1]);
-		if (ret)
+		if (ret) {
+			kfree(name);
 			parse_err("illegal erase size");
+		}
 	}
 
 	add_device(name, erase_size);

drivers/mtd/devices/doc2000.c

@@ -59,13 +59,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 			size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
 static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 			 size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
-static int doc_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
-			  unsigned long count, loff_t to, size_t *retlen,
-			  u_char *eccbuf, struct nand_oobinfo *oobsel);
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			size_t *retlen, u_char *buf);
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			 size_t *retlen, const u_char *buf);
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+			struct mtd_oob_ops *ops);
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+			 struct mtd_oob_ops *ops);
 static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len,
 			 size_t *retlen, const u_char *buf);
 static int doc_erase (struct mtd_info *mtd, struct erase_info *instr);
@@ -517,16 +514,9 @@ static int DoC2k_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2)
 	return retval;
 }
 
-static const char im_name[] = "DoC2k_init";
-
-/* This routine is made available to other mtd code via
- * inter_module_register.  It must only be accessed through
- * inter_module_get which will bump the use count of this module.  The
- * addresses passed back in mtd are valid as long as the use count of
- * this module is non-zero, i.e. between inter_module_get and
- * inter_module_put.  Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
- */
-static void DoC2k_init(struct mtd_info *mtd)
+/* This routine is found from the docprobe code by symbol_get(),
+ * which will bump the use count of this module. */
+void DoC2k_init(struct mtd_info *mtd)
 {
 	struct DiskOnChip *this = mtd->priv;
 	struct DiskOnChip *old = NULL;
@@ -586,7 +576,7 @@ static void DoC2k_init(struct mtd_info *mtd)
 	mtd->ecctype = MTD_ECC_RS_DiskOnChip;
 	mtd->size = 0;
 	mtd->erasesize = 0;
-	mtd->oobblock = 512;
+	mtd->writesize = 512;
 	mtd->oobsize = 16;
 	mtd->owner = THIS_MODULE;
 	mtd->erase = doc_erase;
@@ -594,9 +584,6 @@ static void DoC2k_init(struct mtd_info *mtd)
 	mtd->unpoint = NULL;
 	mtd->read = doc_read;
 	mtd->write = doc_write;
-	mtd->read_ecc = doc_read_ecc;
-	mtd->write_ecc = doc_write_ecc;
-	mtd->writev_ecc = doc_writev_ecc;
 	mtd->read_oob = doc_read_oob;
 	mtd->write_oob = doc_write_oob;
 	mtd->sync = NULL;
@@ -623,6 +610,7 @@ static void DoC2k_init(struct mtd_info *mtd)
 		return;
 	}
 }
+EXPORT_SYMBOL_GPL(DoC2k_init);
 
 static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
 		    size_t * retlen, u_char * buf)
@@ -971,72 +959,18 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 	return 0;
 }
 
-static int doc_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
-			  unsigned long count, loff_t to, size_t *retlen,
-			  u_char *eccbuf, struct nand_oobinfo *oobsel)
-{
-	static char static_buf[512];
-	static DEFINE_MUTEX(writev_buf_mutex);
-
-	size_t totretlen = 0;
-	size_t thisvecofs = 0;
-	int ret= 0;
-
-	mutex_lock(&writev_buf_mutex);
-
-	while(count) {
-		size_t thislen, thisretlen;
-		unsigned char *buf;
-
-		buf = vecs->iov_base + thisvecofs;
-		thislen = vecs->iov_len - thisvecofs;
-
-
-		if (thislen >= 512) {
-			thislen = thislen & ~(512-1);
-			thisvecofs += thislen;
-		} else {
-			/* Not enough to fill a page. Copy into buf */
-			memcpy(static_buf, buf, thislen);
-			buf = &static_buf[thislen];
-
-			while(count && thislen < 512) {
-				vecs++;
-				count--;
-				thisvecofs = min((512-thislen), vecs->iov_len);
-				memcpy(buf, vecs->iov_base, thisvecofs);
-				thislen += thisvecofs;
-				buf += thisvecofs;
-			}
-			buf = static_buf;
-		}
-		if (count && thisvecofs == vecs->iov_len) {
-			thisvecofs = 0;
-			vecs++;
-			count--;
-		}
-		ret = doc_write_ecc(mtd, to, thislen, &thisretlen, buf, eccbuf, oobsel);
-
-		totretlen += thisretlen;
-
-		if (ret || thisretlen != thislen)
-			break;
-
-		to += thislen;
-	}
-
-	mutex_unlock(&writev_buf_mutex);
-	*retlen = totretlen;
-	return ret;
-}
-
-
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			size_t * retlen, u_char * buf)
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+			struct mtd_oob_ops *ops)
 {
 	struct DiskOnChip *this = mtd->priv;
 	int len256 = 0, ret;
 	struct Nand *mychip;
+	uint8_t *buf = ops->oobbuf;
+	size_t len = ops->len;
+
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	ofs += ops->ooboffs;
 
 	mutex_lock(&this->lock);
 
@@ -1077,7 +1011,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 
 	DoC_ReadBuf(this, &buf[len256], len - len256);
 
-	*retlen = len;
+	ops->retlen = len;
 	/* Reading the full OOB data drops us off of the end of the page,
          * causing the flash device to go into busy mode, so we need
          * to wait until ready 11.4.1 and Toshiba TC58256FT docs */
@@ -1192,17 +1126,20 @@ static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len,
 
 }
 
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
- 			 size_t * retlen, const u_char * buf)
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+			 struct mtd_oob_ops *ops)
 {
- 	struct DiskOnChip *this = mtd->priv;
- 	int ret;
+	struct DiskOnChip *this = mtd->priv;
+	int ret;
 
- 	mutex_lock(&this->lock);
- 	ret = doc_write_oob_nolock(mtd, ofs, len, retlen, buf);
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	mutex_lock(&this->lock);
+	ret = doc_write_oob_nolock(mtd, ofs + ops->ooboffs, ops->len,
+				   &ops->retlen, ops->oobbuf);
 
- 	mutex_unlock(&this->lock);
- 	return ret;
+	mutex_unlock(&this->lock);
+	return ret;
 }
 
 static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
@@ -1277,12 +1214,6 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
  *
  ****************************************************************************/
 
-static int __init init_doc2000(void)
-{
-       inter_module_register(im_name, THIS_MODULE, &DoC2k_init);
-       return 0;
-}
-
 static void __exit cleanup_doc2000(void)
 {
 	struct mtd_info *mtd;
@@ -1298,11 +1229,9 @@ static void __exit cleanup_doc2000(void)
 		kfree(this->chips);
 		kfree(mtd);
 	}
-	inter_module_unregister(im_name);
 }
 
 module_exit(cleanup_doc2000);
-module_init(init_doc2000);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al.");

drivers/mtd/devices/doc2001.c

@@ -43,10 +43,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 			 size_t *retlen, const u_char *buf, u_char *eccbuf,
 			 struct nand_oobinfo *oobsel);
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			size_t *retlen, u_char *buf);
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			 size_t *retlen, const u_char *buf);
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+			struct mtd_oob_ops *ops);
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+			 struct mtd_oob_ops *ops);
 static int doc_erase (struct mtd_info *mtd, struct erase_info *instr);
 
 static struct mtd_info *docmillist = NULL;
@@ -324,16 +324,9 @@ static int DoCMil_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2)
 	return retval;
 }
 
-static const char im_name[] = "DoCMil_init";
-
-/* This routine is made available to other mtd code via
- * inter_module_register.  It must only be accessed through
- * inter_module_get which will bump the use count of this module.  The
- * addresses passed back in mtd are valid as long as the use count of
- * this module is non-zero, i.e. between inter_module_get and
- * inter_module_put.  Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
- */
-static void DoCMil_init(struct mtd_info *mtd)
+/* This routine is found from the docprobe code by symbol_get(),
+ * which will bump the use count of this module. */
+void DoCMil_init(struct mtd_info *mtd)
 {
 	struct DiskOnChip *this = mtd->priv;
 	struct DiskOnChip *old = NULL;
@@ -368,7 +361,7 @@ static void DoCMil_init(struct mtd_info *mtd)
 	/* FIXME: erase size is not always 8KiB */
 	mtd->erasesize = 0x2000;
 
-	mtd->oobblock = 512;
+	mtd->writesize = 512;
 	mtd->oobsize = 16;
 	mtd->owner = THIS_MODULE;
 	mtd->erase = doc_erase;
@@ -376,8 +369,6 @@ static void DoCMil_init(struct mtd_info *mtd)
 	mtd->unpoint = NULL;
 	mtd->read = doc_read;
 	mtd->write = doc_write;
-	mtd->read_ecc = doc_read_ecc;
-	mtd->write_ecc = doc_write_ecc;
 	mtd->read_oob = doc_read_oob;
 	mtd->write_oob = doc_write_oob;
 	mtd->sync = NULL;
@@ -401,6 +392,7 @@ static void DoCMil_init(struct mtd_info *mtd)
 		return;
 	}
 }
+EXPORT_SYMBOL_GPL(DoCMil_init);
 
 static int doc_read (struct mtd_info *mtd, loff_t from, size_t len,
 		     size_t *retlen, u_char *buf)
@@ -670,8 +662,8 @@ static int doc_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
 	return ret;
 }
 
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			size_t *retlen, u_char *buf)
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+			struct mtd_oob_ops *ops)
 {
 #ifndef USE_MEMCPY
 	int i;
@@ -680,6 +672,12 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	struct DiskOnChip *this = mtd->priv;
 	void __iomem *docptr = this->virtadr;
 	struct Nand *mychip = &this->chips[ofs >> this->chipshift];
+	uint8_t *buf = ops->oobbuf;
+	size_t len = ops->len;
+
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	ofs += ops->ooboffs;
 
 	/* Find the chip which is to be used and select it */
 	if (this->curfloor != mychip->floor) {
@@ -716,13 +714,13 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 #endif
 	buf[len - 1] = ReadDOC(docptr, LastDataRead);
 
-	*retlen = len;
+	ops->retlen = len;
 
 	return 0;
 }
 
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			 size_t *retlen, const u_char *buf)
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+			 struct mtd_oob_ops *ops)
 {
 #ifndef USE_MEMCPY
 	int i;
@@ -732,6 +730,12 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	struct DiskOnChip *this = mtd->priv;
 	void __iomem *docptr = this->virtadr;
 	struct Nand *mychip = &this->chips[ofs >> this->chipshift];
+	uint8_t *buf = ops->oobbuf;
+	size_t len = ops->len;
+
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	ofs += ops->ooboffs;
 
 	/* Find the chip which is to be used and select it */
 	if (this->curfloor != mychip->floor) {
@@ -783,12 +787,12 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	if (ReadDOC(docptr, Mil_CDSN_IO) & 1) {
 		printk("Error programming oob data\n");
 		/* FIXME: implement Bad Block Replacement (in nftl.c ??) */
-		*retlen = 0;
+		ops->retlen = 0;
 		ret = -EIO;
 	}
 	dummy = ReadDOC(docptr, LastDataRead);
 
-	*retlen = len;
+	ops->retlen = len;
 
 	return ret;
 }
@@ -856,12 +860,6 @@ int doc_erase (struct mtd_info *mtd, struct erase_info *instr)
  *
  ****************************************************************************/
 
-static int __init init_doc2001(void)
-{
-	inter_module_register(im_name, THIS_MODULE, &DoCMil_init);
-	return 0;
-}
-
 static void __exit cleanup_doc2001(void)
 {
 	struct mtd_info *mtd;
@@ -877,11 +875,9 @@ static void __exit cleanup_doc2001(void)
 		kfree(this->chips);
 		kfree(mtd);
 	}
-	inter_module_unregister(im_name);
 }
 
 module_exit(cleanup_doc2001);
-module_init(init_doc2001);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al.");

drivers/mtd/devices/doc2001plus.c

@@ -47,10 +47,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 		size_t *retlen, const u_char *buf, u_char *eccbuf,
 		struct nand_oobinfo *oobsel);
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-		size_t *retlen, u_char *buf);
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-		size_t *retlen, const u_char *buf);
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+			struct mtd_oob_ops *ops);
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+			 struct mtd_oob_ops *ops);
 static int doc_erase (struct mtd_info *mtd, struct erase_info *instr);
 
 static struct mtd_info *docmilpluslist = NULL;
@@ -447,16 +447,9 @@ static int DoCMilPlus_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2)
 	return retval;
 }
 
-static const char im_name[] = "DoCMilPlus_init";
-
-/* This routine is made available to other mtd code via
- * inter_module_register.  It must only be accessed through
- * inter_module_get which will bump the use count of this module.  The
- * addresses passed back in mtd are valid as long as the use count of
- * this module is non-zero, i.e. between inter_module_get and
- * inter_module_put.  Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
- */
-static void DoCMilPlus_init(struct mtd_info *mtd)
+/* This routine is found from the docprobe code by symbol_get(),
+ * which will bump the use count of this module. */
+void DoCMilPlus_init(struct mtd_info *mtd)
 {
 	struct DiskOnChip *this = mtd->priv;
 	struct DiskOnChip *old = NULL;
@@ -490,7 +483,7 @@ static void DoCMilPlus_init(struct mtd_info *mtd)
 	mtd->size = 0;
 
 	mtd->erasesize = 0;
-	mtd->oobblock = 512;
+	mtd->writesize = 512;
 	mtd->oobsize = 16;
 	mtd->owner = THIS_MODULE;
 	mtd->erase = doc_erase;
@@ -498,8 +491,6 @@ static void DoCMilPlus_init(struct mtd_info *mtd)
 	mtd->unpoint = NULL;
 	mtd->read = doc_read;
 	mtd->write = doc_write;
-	mtd->read_ecc = doc_read_ecc;
-	mtd->write_ecc = doc_write_ecc;
 	mtd->read_oob = doc_read_oob;
 	mtd->write_oob = doc_write_oob;
 	mtd->sync = NULL;
@@ -524,6 +515,7 @@ static void DoCMilPlus_init(struct mtd_info *mtd)
 		return;
 	}
 }
+EXPORT_SYMBOL_GPL(DoCMilPlus_init);
 
 #if 0
 static int doc_dumpblk(struct mtd_info *mtd, loff_t from)
@@ -876,14 +868,20 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 	return ret;
 }
 
-static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			size_t *retlen, u_char *buf)
+static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
+			struct mtd_oob_ops *ops)
 {
 	loff_t fofs, base;
 	struct DiskOnChip *this = mtd->priv;
 	void __iomem * docptr = this->virtadr;
 	struct Nand *mychip = &this->chips[ofs >> this->chipshift];
 	size_t i, size, got, want;
+	uint8_t *buf = ops->oobbuf;
+	size_t len = ops->len;
+
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	ofs += ops->ooboffs;
 
 	DoC_CheckASIC(docptr);
 
@@ -949,12 +947,12 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	/* Disable flash internally */
 	WriteDOC(0, docptr, Mplus_FlashSelect);
 
-	*retlen = len;
+	ops->retlen = len;
 	return 0;
 }
 
-static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
-			 size_t *retlen, const u_char *buf)
+static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
+			 struct mtd_oob_ops *ops)
 {
 	volatile char dummy;
 	loff_t fofs, base;
@@ -963,6 +961,12 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	struct Nand *mychip = &this->chips[ofs >> this->chipshift];
 	size_t i, size, got, want;
 	int ret = 0;
+	uint8_t *buf = ops->oobbuf;
+	size_t len = ops->len;
+
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	ofs += ops->ooboffs;
 
 	DoC_CheckASIC(docptr);
 
@@ -1038,7 +1042,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 			printk("MTD: Error 0x%x programming oob at 0x%x\n",
 				dummy, (int)ofs);
 			/* FIXME: implement Bad Block Replacement */
-			*retlen = 0;
+			ops->retlen = 0;
 			ret = -EIO;
 		}
 		dummy = ReadDOC(docptr, Mplus_LastDataRead);
@@ -1051,7 +1055,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	/* Disable flash internally */
 	WriteDOC(0, docptr, Mplus_FlashSelect);
 
-	*retlen = len;
+	ops->retlen = len;
 	return ret;
 }
 
@@ -1122,12 +1126,6 @@ int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
  *
  ****************************************************************************/
 
-static int __init init_doc2001plus(void)
-{
-	inter_module_register(im_name, THIS_MODULE, &DoCMilPlus_init);
-	return 0;
-}
-
 static void __exit cleanup_doc2001plus(void)
 {
 	struct mtd_info *mtd;
@@ -1143,11 +1141,9 @@ static void __exit cleanup_doc2001plus(void)
 		kfree(this->chips);
 		kfree(mtd);
 	}
-	inter_module_unregister(im_name);
 }
 
 module_exit(cleanup_doc2001plus);
-module_init(init_doc2001plus);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Greg Ungerer <gerg@snapgear.com> et al.");

drivers/mtd/devices/docprobe.c

@@ -231,6 +231,10 @@ static inline int __init doccheck(void __iomem *potential, unsigned long physadr
 
 static int docfound;
 
+extern void DoC2k_init(struct mtd_info *);
+extern void DoCMil_init(struct mtd_info *);
+extern void DoCMilPlus_init(struct mtd_info *);
+
 static void __init DoC_Probe(unsigned long physadr)
 {
 	void __iomem *docptr;
@@ -239,8 +243,6 @@ static void __init DoC_Probe(unsigned long physadr)
 	int ChipID;
 	char namebuf[15];
 	char *name = namebuf;
-	char *im_funcname = NULL;
-	char *im_modname = NULL;
 	void (*initroutine)(struct mtd_info *) = NULL;
 
 	docptr = ioremap(physadr, DOC_IOREMAP_LEN);
@@ -278,41 +280,33 @@ static void __init DoC_Probe(unsigned long physadr)
 		switch(ChipID) {
 		case DOC_ChipID_Doc2kTSOP:
 			name="2000 TSOP";
-			im_funcname = "DoC2k_init";
-			im_modname = "doc2000";
+			initroutine = symbol_request(DoC2k_init);
 			break;
 
 		case DOC_ChipID_Doc2k:
 			name="2000";
-			im_funcname = "DoC2k_init";
-			im_modname = "doc2000";
+			initroutine = symbol_request(DoC2k_init);
 			break;
 
 		case DOC_ChipID_DocMil:
 			name="Millennium";
 #ifdef DOC_SINGLE_DRIVER
-			im_funcname = "DoC2k_init";
-			im_modname = "doc2000";
+			initroutine = symbol_request(DoC2k_init);
 #else
-			im_funcname = "DoCMil_init";
-			im_modname = "doc2001";
+			initroutine = symbol_request(DoCMil_init);
 #endif /* DOC_SINGLE_DRIVER */
 			break;
 
 		case DOC_ChipID_DocMilPlus16:
 		case DOC_ChipID_DocMilPlus32:
 			name="MillenniumPlus";
-			im_funcname = "DoCMilPlus_init";
-			im_modname = "doc2001plus";
+			initroutine = symbol_request(DoCMilPlus_init);
 			break;
 		}
 
-		if (im_funcname)
-			initroutine = inter_module_get_request(im_funcname, im_modname);
-
 		if (initroutine) {
 			(*initroutine)(mtd);
-			inter_module_put(im_funcname);
+			symbol_put_addr(initroutine);
 			return;
 		}
 		printk(KERN_NOTICE "Cannot find driver for DiskOnChip %s at 0x%lX\n", name, physadr);

drivers/mtd/devices/lart.c

@@ -635,6 +635,7 @@ int __init lart_flash_init (void)
    printk ("%s: This looks like a LART board to me.\n",module_name);
    mtd.name = module_name;
    mtd.type = MTD_NORFLASH;
+   mtd.writesize = 1;
    mtd.flags = MTD_CAP_NORFLASH;
    mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN;
    mtd.erasesize = FLASH_BLOCKSIZE_MAIN;

drivers/mtd/devices/m25p80.c

@@ -465,6 +465,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
 		flash->mtd.name = spi->dev.bus_id;
 
 	flash->mtd.type = MTD_NORFLASH;
+	flash->mtd.writesize = 1;
 	flash->mtd.flags = MTD_CAP_NORFLASH;
 	flash->mtd.size = info->sector_size * info->n_sectors;
 	flash->mtd.erasesize = info->sector_size;

drivers/mtd/devices/ms02-nv.c

@@ -219,7 +219,7 @@ static int __init ms02nv_init_one(ulong addr)
 	mp->uaddr = phys_to_virt(fixaddr);
 
 	mtd->type = MTD_RAM;
-	mtd->flags = MTD_CAP_RAM | MTD_XIP;
+	mtd->flags = MTD_CAP_RAM;
 	mtd->size = fixsize;
 	mtd->name = (char *)ms02nv_name;
 	mtd->owner = THIS_MODULE;

drivers/mtd/devices/mtdram.c

@@ -106,6 +106,7 @@ int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
 	mtd->type = MTD_RAM;
 	mtd->flags = MTD_CAP_RAM;
 	mtd->size = size;
+	mtd->writesize = 1;
 	mtd->erasesize = MTDRAM_ERASE_SIZE;
 	mtd->priv = mapped_address;
 

drivers/mtd/devices/phram.c

@@ -1,8 +1,8 @@
 /**
  * $Id: phram.c,v 1.16 2005/11/07 11:14:25 gleixner Exp $
  *
- * Copyright (c) ????		Jochen Schäuble <psionic@psionic.de>
- * Copyright (c) 2003-2004	Jörn Engel <joern@wh.fh-wedel.de>
+ * Copyright (c) ????		Jochen Schäuble <psionic@psionic.de>
+ * Copyright (c) 2003-2004	Jörn Engel <joern@wh.fh-wedel.de>
  *
  * Usage:
  *
@@ -142,7 +142,7 @@ static int register_device(char *name, unsigned long start, unsigned long len)
 
 	new->mtd.name = name;
 	new->mtd.size = len;
-	new->mtd.flags = MTD_CAP_RAM | MTD_ERASEABLE | MTD_VOLATILE;
+	new->mtd.flags = MTD_CAP_RAM;
         new->mtd.erase = phram_erase;
 	new->mtd.point = phram_point;
 	new->mtd.unpoint = phram_unpoint;
@@ -266,12 +266,16 @@ static int phram_setup(const char *val, struct kernel_param *kp)
 		return 0;
 
 	ret = parse_num32(&start, token[1]);
-	if (ret)
+	if (ret) {
+		kfree(name);
 		parse_err("illegal start address\n");
+	}
 
 	ret = parse_num32(&len, token[2]);
-	if (ret)
+	if (ret) {
+		kfree(name);
 		parse_err("illegal device length\n");
+	}
 
 	register_device(name, start, len);
 
@@ -296,5 +300,5 @@ module_init(init_phram);
 module_exit(cleanup_phram);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jörn Engel <joern@wh.fh-wedel.de>");
+MODULE_AUTHOR("Jörn Engel <joern@wh.fh-wedel.de>");
 MODULE_DESCRIPTION("MTD driver for physical RAM");

drivers/mtd/devices/slram.c

@@ -200,8 +200,7 @@ static int register_device(char *name, unsigned long start, unsigned long length
 
 	(*curmtd)->mtdinfo->name = name;
 	(*curmtd)->mtdinfo->size = length;
-	(*curmtd)->mtdinfo->flags = MTD_CLEAR_BITS | MTD_SET_BITS |
-					MTD_WRITEB_WRITEABLE | MTD_VOLATILE | MTD_CAP_RAM;
+	(*curmtd)->mtdinfo->flags = MTD_CAP_RAM;
         (*curmtd)->mtdinfo->erase = slram_erase;
 	(*curmtd)->mtdinfo->point = slram_point;
 	(*curmtd)->mtdinfo->unpoint = slram_unpoint;

drivers/mtd/inftlcore.c

@@ -36,6 +36,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nftl.h>
 #include <linux/mtd/inftl.h>
+#include <linux/mtd/nand.h>
 #include <asm/uaccess.h>
 #include <asm/errno.h>
 #include <asm/io.h>
@@ -79,14 +80,12 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 	inftl->mbd.devnum = -1;
 	inftl->mbd.blksize = 512;
 	inftl->mbd.tr = tr;
-	memcpy(&inftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
-	inftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
 
-        if (INFTL_mount(inftl) < 0) {
+	if (INFTL_mount(inftl) < 0) {
 		printk(KERN_WARNING "INFTL: could not mount device\n");
 		kfree(inftl);
 		return;
-        }
+	}
 
 	/* OK, it's a new one. Set up all the data structures. */
 
@@ -151,6 +150,69 @@ static void inftl_remove_dev(struct mtd_blktrans_dev *dev)
  * Actual INFTL access routines.
  */
 
+/*
+ * Read oob data from flash
+ */
+int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		   size_t *retlen, uint8_t *buf)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs & (mtd->writesize - 1);
+	ops.ooblen = len;
+	ops.oobbuf = buf;
+	ops.datbuf = NULL;
+	ops.len = len;
+
+	res = mtd->read_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
+ * Write oob data to flash
+ */
+int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		    size_t *retlen, uint8_t *buf)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs & (mtd->writesize - 1);
+	ops.ooblen = len;
+	ops.oobbuf = buf;
+	ops.datbuf = NULL;
+	ops.len = len;
+
+	res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
+ * Write data and oob to flash
+ */
+static int inftl_write(struct mtd_info *mtd, loff_t offs, size_t len,
+		       size_t *retlen, uint8_t *buf, uint8_t *oob)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs;
+	ops.ooblen = mtd->oobsize;
+	ops.oobbuf = oob;
+	ops.datbuf = buf;
+	ops.len = len;
+
+	res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
 /*
  * INFTL_findfreeblock: Find a free Erase Unit on the INFTL partition.
  *	This function is used when the give Virtual Unit Chain.
@@ -198,10 +260,11 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 	u16 BlockMap[MAX_SECTORS_PER_UNIT];
 	unsigned char BlockDeleted[MAX_SECTORS_PER_UNIT];
 	unsigned int thisEUN, prevEUN, status;
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	int block, silly;
 	unsigned int targetEUN;
 	struct inftl_oob oob;
-        size_t retlen;
+	size_t retlen;
 
 	DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d,"
 		"pending=%d)\n", inftl, thisVUC, pendingblock);
@@ -221,18 +284,18 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 	 * Scan to find the Erase Unit which holds the actual data for each
 	 * 512-byte block within the Chain.
 	 */
-        silly = MAX_LOOPS;
+	silly = MAX_LOOPS;
 	while (thisEUN < inftl->nb_blocks) {
 		for (block = 0; block < inftl->EraseSize/SECTORSIZE; block ++) {
 			if ((BlockMap[block] != 0xffff) || BlockDeleted[block])
 				continue;
 
-			if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize)
-			     + (block * SECTORSIZE), 16 , &retlen,
-			     (char *)&oob) < 0)
+			if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize)
+					   + (block * SECTORSIZE), 16, &retlen,
+					   (char *)&oob) < 0)
 				status = SECTOR_IGNORE;
 			else
-                        	status = oob.b.Status | oob.b.Status1;
+				status = oob.b.Status | oob.b.Status1;
 
 			switch(status) {
 			case SECTOR_FREE:
@@ -282,29 +345,31 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 			continue;
 		}
 
-                /*
+		/*
 		 * Copy only in non free block (free blocks can only
                  * happen in case of media errors or deleted blocks).
 		 */
-                if (BlockMap[block] == BLOCK_NIL)
-                        continue;
-
-                ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
-			BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE,
-			&retlen, movebuf);
-                if (ret < 0) {
-			ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
-				BlockMap[block]) + (block * SECTORSIZE),
-				SECTORSIZE, &retlen, movebuf);
+		if (BlockMap[block] == BLOCK_NIL)
+			continue;
+
+		ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) +
+				(block * SECTORSIZE), SECTORSIZE, &retlen,
+				movebuf);
+		if (ret < 0 && ret != -EUCLEAN) {
+			ret = mtd->read(mtd,
+					(inftl->EraseSize * BlockMap[block]) +
+					(block * SECTORSIZE), SECTORSIZE,
+					&retlen, movebuf);
 			if (ret != -EIO)
-                        	DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
-					"away on retry?\n");
-                }
-                memset(&oob, 0xff, sizeof(struct inftl_oob));
-                oob.b.Status = oob.b.Status1 = SECTOR_USED;
-                MTD_WRITEECC(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) +
-			(block * SECTORSIZE), SECTORSIZE, &retlen,
-			movebuf, (char *)&oob, &inftl->oobinfo);
+				DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
+				      "away on retry?\n");
+		}
+		memset(&oob, 0xff, sizeof(struct inftl_oob));
+		oob.b.Status = oob.b.Status1 = SECTOR_USED;
+
+		inftl_write(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) +
+			    (block * SECTORSIZE), SECTORSIZE, &retlen,
+			    movebuf, (char *)&oob);
 	}
 
 	/*
@@ -329,17 +394,17 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 		if (thisEUN == targetEUN)
 			break;
 
-                if (INFTL_formatblock(inftl, thisEUN) < 0) {
+		if (INFTL_formatblock(inftl, thisEUN) < 0) {
 			/*
 			 * Could not erase : mark block as reserved.
 			 */
 			inftl->PUtable[thisEUN] = BLOCK_RESERVED;
-                } else {
+		} else {
 			/* Correctly erased : mark it as free */
 			inftl->PUtable[thisEUN] = BLOCK_FREE;
 			inftl->PUtable[prevEUN] = BLOCK_NIL;
 			inftl->numfreeEUNs++;
-                }
+		}
 	}
 
 	return targetEUN;
@@ -415,6 +480,7 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block)
 	unsigned int thisVUC = block / (inftl->EraseSize / SECTORSIZE);
 	unsigned int thisEUN, writeEUN, prev_block, status;
 	unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize -1);
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	struct inftl_oob oob;
 	struct inftl_bci bci;
 	unsigned char anac, nacs, parity;
@@ -434,10 +500,10 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block)
 		silly = MAX_LOOPS;
 
 		while (thisEUN <= inftl->lastEUN) {
-			MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
-				blockofs, 8, &retlen, (char *)&bci);
+			inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) +
+				       blockofs, 8, &retlen, (char *)&bci);
 
-                        status = bci.Status | bci.Status1;
+			status = bci.Status | bci.Status1;
 			DEBUG(MTD_DEBUG_LEVEL3, "INFTL: status of block %d in "
 				"EUN %d is %x\n", block , writeEUN, status);
 
@@ -522,8 +588,8 @@ hitused:
 		nacs = 0;
 		thisEUN = inftl->VUtable[thisVUC];
 		if (thisEUN != BLOCK_NIL) {
-			MTD_READOOB(inftl->mbd.mtd, thisEUN * inftl->EraseSize
-				+ 8, 8, &retlen, (char *)&oob.u);
+			inftl_read_oob(mtd, thisEUN * inftl->EraseSize
+				       + 8, 8, &retlen, (char *)&oob.u);
 			anac = oob.u.a.ANAC + 1;
 			nacs = oob.u.a.NACs + 1;
 		}
@@ -544,8 +610,8 @@ hitused:
 		oob.u.a.parityPerField = parity;
 		oob.u.a.discarded = 0xaa;
 
-		MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize + 8, 8,
-			&retlen, (char *)&oob.u);
+		inftl_write_oob(mtd, writeEUN * inftl->EraseSize + 8, 8,
+				&retlen, (char *)&oob.u);
 
 		/* Also back up header... */
 		oob.u.b.virtualUnitNo = cpu_to_le16(thisVUC);
@@ -555,8 +621,8 @@ hitused:
 		oob.u.b.parityPerField = parity;
 		oob.u.b.discarded = 0xaa;
 
-		MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize +
-			SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u);
+		inftl_write_oob(mtd, writeEUN * inftl->EraseSize +
+				SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u);
 
 		inftl->PUtable[writeEUN] = inftl->VUtable[thisVUC];
 		inftl->VUtable[thisVUC] = writeEUN;
@@ -576,6 +642,7 @@ hitused:
  */
 static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC)
 {
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	unsigned char BlockUsed[MAX_SECTORS_PER_UNIT];
 	unsigned char BlockDeleted[MAX_SECTORS_PER_UNIT];
 	unsigned int thisEUN, status;
@@ -606,9 +673,9 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC)
 			if (BlockUsed[block] || BlockDeleted[block])
 				continue;
 
-			if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize)
-			    + (block * SECTORSIZE), 8 , &retlen,
-			    (char *)&bci) < 0)
+			if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize)
+					   + (block * SECTORSIZE), 8 , &retlen,
+					  (char *)&bci) < 0)
 				status = SECTOR_IGNORE;
 			else
 				status = bci.Status | bci.Status1;
@@ -670,12 +737,12 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC)
 		DEBUG(MTD_DEBUG_LEVEL3, "Deleting EUN %d from VUC %d\n",
 		      thisEUN, thisVUC);
 
-                if (INFTL_formatblock(inftl, thisEUN) < 0) {
+		if (INFTL_formatblock(inftl, thisEUN) < 0) {
 			/*
 			 * Could not erase : mark block as reserved.
 			 */
 			inftl->PUtable[thisEUN] = BLOCK_RESERVED;
-                } else {
+		} else {
 			/* Correctly erased : mark it as free */
 			inftl->PUtable[thisEUN] = BLOCK_FREE;
 			inftl->numfreeEUNs++;
@@ -697,6 +764,7 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block)
 {
 	unsigned int thisEUN = inftl->VUtable[block / (inftl->EraseSize / SECTORSIZE)];
 	unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1);
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	unsigned int status;
 	int silly = MAX_LOOPS;
 	size_t retlen;
@@ -706,8 +774,8 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block)
 		"block=%d)\n", inftl, block);
 
 	while (thisEUN < inftl->nb_blocks) {
-		if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
-		    blockofs, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) +
+				   blockofs, 8, &retlen, (char *)&bci) < 0)
 			status = SECTOR_IGNORE;
 		else
 			status = bci.Status | bci.Status1;
@@ -741,10 +809,10 @@ foundit:
 	if (thisEUN != BLOCK_NIL) {
 		loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
 
-		if (MTD_READOOB(inftl->mbd.mtd, ptr, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_read_oob(mtd, ptr, 8, &retlen, (char *)&bci) < 0)
 			return -EIO;
 		bci.Status = bci.Status1 = SECTOR_DELETED;
-		if (MTD_WRITEOOB(inftl->mbd.mtd, ptr, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_write_oob(mtd, ptr, 8, &retlen, (char *)&bci) < 0)
 			return -EIO;
 		INFTL_trydeletechain(inftl, block / (inftl->EraseSize / SECTORSIZE));
 	}
@@ -784,9 +852,10 @@ static int inftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 
 		memset(&oob, 0xff, sizeof(struct inftl_oob));
 		oob.b.Status = oob.b.Status1 = SECTOR_USED;
-		MTD_WRITEECC(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) +
-			blockofs, SECTORSIZE, &retlen, (char *)buffer,
-			(char *)&oob, &inftl->oobinfo);
+
+		inftl_write(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) +
+			    blockofs, SECTORSIZE, &retlen, (char *)buffer,
+			    (char *)&oob);
 		/*
 		 * need to write SECTOR_USED flags since they are not written
 		 * in mtd_writeecc
@@ -804,17 +873,18 @@ static int inftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 	struct INFTLrecord *inftl = (void *)mbd;
 	unsigned int thisEUN = inftl->VUtable[block / (inftl->EraseSize / SECTORSIZE)];
 	unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1);
-        unsigned int status;
+	struct mtd_info *mtd = inftl->mbd.mtd;
+	unsigned int status;
 	int silly = MAX_LOOPS;
-        struct inftl_bci bci;
+	struct inftl_bci bci;
 	size_t retlen;
 
 	DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_readblock(inftl=%p,block=%ld,"
 		"buffer=%p)\n", inftl, block, buffer);
 
 	while (thisEUN < inftl->nb_blocks) {
-		if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
-		     blockofs, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) +
+				  blockofs, 8, &retlen, (char *)&bci) < 0)
 			status = SECTOR_IGNORE;
 		else
 			status = bci.Status | bci.Status1;
@@ -850,10 +920,12 @@ foundit:
 		/* The requested block is not on the media, return all 0x00 */
 		memset(buffer, 0, SECTORSIZE);
 	} else {
-        	size_t retlen;
+		size_t retlen;
 		loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
-		if (MTD_READ(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen,
-		    buffer))
+		int ret = mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer);
+
+		/* Handle corrected bit flips gracefully */
+		if (ret < 0 && ret != -EUCLEAN)
 			return -EIO;
 	}
 	return 0;

drivers/mtd/inftlmount.c

@@ -43,6 +43,11 @@
 
 char inftlmountrev[]="$Revision: 1.18 $";
 
+extern int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+			  size_t *retlen, uint8_t *buf);
+extern int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+			   size_t *retlen, uint8_t *buf);
+
 /*
  * find_boot_record: Find the INFTL Media Header and its Spare copy which
  *	contains the various device information of the INFTL partition and
@@ -57,6 +62,7 @@ static int find_boot_record(struct INFTLrecord *inftl)
 	unsigned int i, block;
 	u8 buf[SECTORSIZE];
 	struct INFTLMediaHeader *mh = &inftl->MediaHdr;
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	struct INFTLPartition *ip;
 	size_t retlen;
 
@@ -80,8 +86,8 @@ static int find_boot_record(struct INFTLrecord *inftl)
 		 * Check for BNAND header first. Then whinge if it's found
 		 * but later checks fail.
 		 */
-		ret = MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize,
-		    SECTORSIZE, &retlen, buf);
+		ret = mtd->read(mtd, block * inftl->EraseSize,
+				SECTORSIZE, &retlen, buf);
 		/* We ignore ret in case the ECC of the MediaHeader is invalid
 		   (which is apparently acceptable) */
 		if (retlen != SECTORSIZE) {
@@ -106,8 +112,9 @@ static int find_boot_record(struct INFTLrecord *inftl)
 		}
 
 		/* To be safer with BIOS, also use erase mark as discriminant */
-		if ((ret = MTD_READOOB(inftl->mbd.mtd, block * inftl->EraseSize +
-		    SECTORSIZE + 8, 8, &retlen, (char *)&h1) < 0)) {
+		if ((ret = inftl_read_oob(mtd, block * inftl->EraseSize +
+					  SECTORSIZE + 8, 8, &retlen,
+					  (char *)&h1) < 0)) {
 			printk(KERN_WARNING "INFTL: ANAND header found at "
 				"0x%x in mtd%d, but OOB data read failed "
 				"(err %d)\n", block * inftl->EraseSize,
@@ -123,8 +130,8 @@ static int find_boot_record(struct INFTLrecord *inftl)
 		memcpy(mh, buf, sizeof(struct INFTLMediaHeader));
 
 		/* Read the spare media header at offset 4096 */
-		MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize + 4096,
-		    SECTORSIZE, &retlen, buf);
+		mtd->read(mtd, block * inftl->EraseSize + 4096,
+			  SECTORSIZE, &retlen, buf);
 		if (retlen != SECTORSIZE) {
 			printk(KERN_WARNING "INFTL: Unable to read spare "
 			       "Media Header\n");
@@ -233,7 +240,7 @@ static int find_boot_record(struct INFTLrecord *inftl)
 				 */
 				instr->addr = ip->Reserved0 * inftl->EraseSize;
 				instr->len = inftl->EraseSize;
-				MTD_ERASE(inftl->mbd.mtd, instr);
+				mtd->erase(mtd, instr);
 			}
 			if ((ip->lastUnit - ip->firstUnit + 1) < ip->virtualUnits) {
 				printk(KERN_WARNING "INFTL: Media Header "
@@ -350,21 +357,21 @@ static int check_free_sectors(struct INFTLrecord *inftl, unsigned int address,
 	int len, int check_oob)
 {
 	u8 buf[SECTORSIZE + inftl->mbd.mtd->oobsize];
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	size_t retlen;
 	int i;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "INFTL: check_free_sectors(inftl=%p,"
-		"address=0x%x,len=%d,check_oob=%d)\n", inftl,
-		address, len, check_oob);
-
 	for (i = 0; i < len; i += SECTORSIZE) {
-		if (MTD_READECC(inftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &inftl->oobinfo) < 0)
+		if (mtd->read(mtd, address, SECTORSIZE, &retlen, buf))
 			return -1;
 		if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
 			return -1;
 
 		if (check_oob) {
-			if (memcmpb(buf + SECTORSIZE, 0xff, inftl->mbd.mtd->oobsize) != 0)
+			if(inftl_read_oob(mtd, address, mtd->oobsize,
+					  &retlen, &buf[SECTORSIZE]) < 0)
+				return -1;
+			if (memcmpb(buf + SECTORSIZE, 0xff, mtd->oobsize) != 0)
 				return -1;
 		}
 		address += SECTORSIZE;
@@ -387,6 +394,7 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block)
 	size_t retlen;
 	struct inftl_unittail uci;
 	struct erase_info *instr = &inftl->instr;
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	int physblock;
 
 	DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_formatblock(inftl=%p,"
@@ -404,8 +412,9 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block)
 	/* Erase one physical eraseblock at a time, even though the NAND api
 	   allows us to group them.  This way we if we have a failure, we can
 	   mark only the failed block in the bbt. */
-	for (physblock = 0; physblock < inftl->EraseSize; physblock += instr->len, instr->addr += instr->len) {
-		MTD_ERASE(inftl->mbd.mtd, instr);
+	for (physblock = 0; physblock < inftl->EraseSize;
+	     physblock += instr->len, instr->addr += instr->len) {
+		mtd->erase(inftl->mbd.mtd, instr);
 
 		if (instr->state == MTD_ERASE_FAILED) {
 			printk(KERN_WARNING "INFTL: error while formatting block %d\n",
@@ -414,10 +423,10 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block)
 		}
 
 		/*
-	 	* Check the "freeness" of Erase Unit before updating metadata.
-	 	* FixMe: is this check really necessary? Since we have check the
-	 	*        return code after the erase operation.
-	 	*/
+		 * Check the "freeness" of Erase Unit before updating metadata.
+		 * FixMe: is this check really necessary? Since we have check
+		 * the return code after the erase operation.
+		 */
 		if (check_free_sectors(inftl, instr->addr, instr->len, 1) != 0)
 			goto fail;
 	}
@@ -429,8 +438,7 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block)
 	uci.Reserved[2] = 0;
 	uci.Reserved[3] = 0;
 	instr->addr = block * inftl->EraseSize + SECTORSIZE * 2;
-	if (MTD_WRITEOOB(inftl->mbd.mtd, instr->addr +
-	    8, 8, &retlen, (char *)&uci) < 0)
+	if (inftl_write_oob(mtd, instr->addr + 8, 8, &retlen, (char *)&uci) < 0)
 		goto fail;
 	return 0;
 fail:
@@ -549,6 +557,7 @@ void INFTL_dumpVUchains(struct INFTLrecord *s)
 
 int INFTL_mount(struct INFTLrecord *s)
 {
+	struct mtd_info *mtd = s->mbd.mtd;
 	unsigned int block, first_block, prev_block, last_block;
 	unsigned int first_logical_block, logical_block, erase_mark;
 	int chain_length, do_format_chain;
@@ -607,10 +616,11 @@ int INFTL_mount(struct INFTLrecord *s)
 				break;
 			}
 
-			if (MTD_READOOB(s->mbd.mtd, block * s->EraseSize + 8,
-			    8, &retlen, (char *)&h0) < 0 ||
-			    MTD_READOOB(s->mbd.mtd, block * s->EraseSize +
-			    2 * SECTORSIZE + 8, 8, &retlen, (char *)&h1) < 0) {
+			if (inftl_read_oob(mtd, block * s->EraseSize + 8,
+					   8, &retlen, (char *)&h0) < 0 ||
+			    inftl_read_oob(mtd, block * s->EraseSize +
+					   2 * SECTORSIZE + 8, 8, &retlen,
+					   (char *)&h1) < 0) {
 				/* Should never happen? */
 				do_format_chain++;
 				break;

drivers/mtd/maps/Kconfig

@@ -37,7 +37,7 @@ config MTD_PHYSMAP_START
 config MTD_PHYSMAP_LEN
 	hex "Physical length of flash mapping"
 	depends on MTD_PHYSMAP
-	default "0x4000000"
+	default "0"
 	help
 	  This is the total length of the mapping of the flash chips on
 	  your particular board. If there is space, or aliases, in the
@@ -78,7 +78,7 @@ config MTD_PNC2000
 
 config MTD_SC520CDP
 	tristate "CFI Flash device mapped on AMD SC520 CDP"
-	depends on X86 && MTD_CFI
+	depends on X86 && MTD_CFI && MTD_CONCAT
 	help
 	  The SC520 CDP board has two banks of CFI-compliant chips and one
 	  Dual-in-line JEDEC chip. This 'mapping' driver supports that
@@ -109,7 +109,7 @@ config MTD_TS5500
 	  mtd1 allows you to reprogram your BIOS. BE VERY CAREFUL.
 
 	  Note that jumper 3 ("Write Enable Drive A") must be set
-	  otherwise detection won't succeeed.
+	  otherwise detection won't succeed.
 
 config MTD_SBC_GXX
 	tristate "CFI Flash device mapped on Arcom SBC-GXx boards"
@@ -200,8 +200,8 @@ config MTD_TSUNAMI
 	  Support for the flash chip on Tsunami TIG bus.
 
 config MTD_LASAT
-	tristate "Flash chips on LASAT board"
-	depends on LASAT
+	tristate "LASAT flash device"
+	depends on LASAT && MTD_CFI
 	help
 	  Support for the flash chips on the Lasat 100 and 200 boards.
 
@@ -561,7 +561,6 @@ config MTD_PCMCIA
 config MTD_PCMCIA_ANONYMOUS
 	bool "Use PCMCIA MTD drivers for anonymous PCMCIA cards"
 	depends on MTD_PCMCIA
-	default N
 	help
 	  If this option is enabled, PCMCIA cards which do not report
 	  anything about themselves are assumed to be MTD cards.

drivers/mtd/maps/cfi_flagadm.c

@@ -1,5 +1,5 @@
 /*
- *  Copyright © 2001 Flaga hf. Medical Devices, Kári Davíðsson <kd@flaga.is>
+ *  Copyright © 2001 Flaga hf. Medical Devices, Kári Davíðsson <kd@flaga.is>
  *
  *  $Id: cfi_flagadm.c,v 1.15 2005/11/07 11:14:26 gleixner Exp $
  *
@@ -135,5 +135,5 @@ module_exit(cleanup_flagadm);
 
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>");
+MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>");
 MODULE_DESCRIPTION("MTD map driver for Flaga digital module");

drivers/mtd/maps/dbox2-flash.c

@@ -122,5 +122,5 @@ module_exit(cleanup_dbox2_flash);
 
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
+MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
 MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");

drivers/mtd/maps/mtx-1_flash.c

@@ -4,7 +4,7 @@
  * $Id: mtx-1_flash.c,v 1.2 2005/11/07 11:14:27 gleixner Exp $
  *
  * (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz>
- * (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de>
+ * (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de>
  *
  */
 

drivers/mtd/maps/nettel.c

@@ -20,6 +20,8 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/cfi.h>
 #include <linux/reboot.h>
+#include <linux/kdev_t.h>
+#include <linux/root_dev.h>
 #include <asm/io.h>
 
 /****************************************************************************/
@@ -188,7 +190,7 @@ int nettel_eraseconfig(void)
 		set_current_state(TASK_INTERRUPTIBLE);
 		add_wait_queue(&wait_q, &wait);
 
-		ret = MTD_ERASE(mtd, &nettel_erase);
+		ret = mtd->erase(mtd, &nettel_erase);
 		if (ret) {
 			set_current_state(TASK_RUNNING);
 			remove_wait_queue(&wait_q, &wait);

drivers/mtd/maps/pcmciamtd.c

@@ -713,6 +713,7 @@ static void pcmciamtd_detach(struct pcmcia_device *link)
 
 	if(dev->mtd_info) {
 		del_mtd_device(dev->mtd_info);
+		map_destroy(dev->mtd_info);
 		info("mtd%d: Removed", dev->mtd_info->index);
 	}
 

drivers/mtd/maps/physmap.c

@@ -14,112 +14,229 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/slab.h>
-#include <asm/io.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/config.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
+#include <asm/io.h>
 
-static struct mtd_info *mymtd;
-
-struct map_info physmap_map = {
-	.name = "phys_mapped_flash",
-	.phys = CONFIG_MTD_PHYSMAP_START,
-	.size = CONFIG_MTD_PHYSMAP_LEN,
-	.bankwidth = CONFIG_MTD_PHYSMAP_BANKWIDTH,
+struct physmap_flash_info {
+	struct mtd_info		*mtd;
+	struct map_info		map;
+	struct resource		*res;
+#ifdef CONFIG_MTD_PARTITIONS
+	int			nr_parts;
+	struct mtd_partition	*parts;
+#endif
 };
 
+
+static int physmap_flash_remove(struct platform_device *dev)
+{
+	struct physmap_flash_info *info;
+	struct physmap_flash_data *physmap_data;
+
+	info = platform_get_drvdata(dev);
+	if (info == NULL)
+		return 0;
+	platform_set_drvdata(dev, NULL);
+
+	physmap_data = dev->dev.platform_data;
+
+	if (info->mtd != NULL) {
 #ifdef CONFIG_MTD_PARTITIONS
-static struct mtd_partition *mtd_parts;
-static int                   mtd_parts_nb;
+		if (info->nr_parts) {
+			del_mtd_partitions(info->mtd);
+			kfree(info->parts);
+		} else if (physmap_data->nr_parts) {
+			del_mtd_partitions(info->mtd);
+		} else {
+			del_mtd_device(info->mtd);
+		}
+#else
+		del_mtd_device(info->mtd);
+#endif
+		map_destroy(info->mtd);
+	}
 
-static int num_physmap_partitions;
-static struct mtd_partition *physmap_partitions;
+	if (info->map.virt != NULL)
+		iounmap((void *)info->map.virt);
 
-static const char *part_probes[] __initdata = {"cmdlinepart", "RedBoot", NULL};
+	if (info->res != NULL) {
+		release_resource(info->res);
+		kfree(info->res);
+	}
 
-void physmap_set_partitions(struct mtd_partition *parts, int num_parts)
-{
-	physmap_partitions=parts;
-	num_physmap_partitions=num_parts;
+	return 0;
 }
-#endif /* CONFIG_MTD_PARTITIONS */
 
-static int __init init_physmap(void)
+static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };
+#endif
+
+static int physmap_flash_probe(struct platform_device *dev)
 {
-	static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
-	const char **type;
+	struct physmap_flash_data *physmap_data;
+	struct physmap_flash_info *info;
+	const char **probe_type;
+	int err;
+
+	physmap_data = dev->dev.platform_data;
+	if (physmap_data == NULL)
+		return -ENODEV;
+
+       	printk(KERN_NOTICE "physmap platform flash device: %.8llx at %.8llx\n",
+	    (unsigned long long)dev->resource->end - dev->resource->start + 1,
+	    (unsigned long long)dev->resource->start);
+
+	info = kmalloc(sizeof(struct physmap_flash_info), GFP_KERNEL);
+	if (info == NULL) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+	memset(info, 0, sizeof(*info));
 
-       	printk(KERN_NOTICE "physmap flash device: %lx at %lx\n", physmap_map.size, physmap_map.phys);
-	physmap_map.virt = ioremap(physmap_map.phys, physmap_map.size);
+	platform_set_drvdata(dev, info);
 
-	if (!physmap_map.virt) {
-		printk("Failed to ioremap\n");
-		return -EIO;
+	info->res = request_mem_region(dev->resource->start,
+			dev->resource->end - dev->resource->start + 1,
+			dev->dev.bus_id);
+	if (info->res == NULL) {
+		dev_err(&dev->dev, "Could not reserve memory region\n");
+		err = -ENOMEM;
+		goto err_out;
 	}
 
-	simple_map_init(&physmap_map);
+	info->map.name = dev->dev.bus_id;
+	info->map.phys = dev->resource->start;
+	info->map.size = dev->resource->end - dev->resource->start + 1;
+	info->map.bankwidth = physmap_data->width;
+	info->map.set_vpp = physmap_data->set_vpp;
+
+	info->map.virt = ioremap(info->map.phys, info->map.size);
+	if (info->map.virt == NULL) {
+		dev_err(&dev->dev, "Failed to ioremap flash region\n");
+		err = EIO;
+		goto err_out;
+	}
 
-	mymtd = NULL;
-	type = rom_probe_types;
-	for(; !mymtd && *type; type++) {
-		mymtd = do_map_probe(*type, &physmap_map);
+	simple_map_init(&info->map);
+
+	probe_type = rom_probe_types;
+	for (; info->mtd == NULL && *probe_type != NULL; probe_type++)
+		info->mtd = do_map_probe(*probe_type, &info->map);
+	if (info->mtd == NULL) {
+		dev_err(&dev->dev, "map_probe failed\n");
+		err = -ENXIO;
+		goto err_out;
 	}
-	if (mymtd) {
-		mymtd->owner = THIS_MODULE;
+	info->mtd->owner = THIS_MODULE;
 
 #ifdef CONFIG_MTD_PARTITIONS
-		mtd_parts_nb = parse_mtd_partitions(mymtd, part_probes,
-						    &mtd_parts, 0);
+	err = parse_mtd_partitions(info->mtd, part_probe_types, &info->parts, 0);
+	if (err > 0) {
+		add_mtd_partitions(info->mtd, info->parts, err);
+		return 0;
+	}
 
-		if (mtd_parts_nb > 0)
-		{
-			add_mtd_partitions (mymtd, mtd_parts, mtd_parts_nb);
-			return 0;
-		}
+	if (physmap_data->nr_parts) {
+		printk(KERN_NOTICE "Using physmap partition information\n");
+		add_mtd_partitions(info->mtd, physmap_data->parts,
+						physmap_data->nr_parts);
+		return 0;
+	}
+#endif
+
+	add_mtd_device(info->mtd);
+	return 0;
+
+err_out:
+	physmap_flash_remove(dev);
+	return err;
+}
+
+static struct platform_driver physmap_flash_driver = {
+	.probe		= physmap_flash_probe,
+	.remove		= physmap_flash_remove,
+	.driver		= {
+		.name	= "physmap-flash",
+	},
+};
 
-		if (num_physmap_partitions != 0)
-		{
-			printk(KERN_NOTICE
-			       "Using physmap partition definition\n");
-			add_mtd_partitions (mymtd, physmap_partitions, num_physmap_partitions);
-			return 0;
-		}
 
+#ifdef CONFIG_MTD_PHYSMAP_LEN
+#if CONFIG_MTD_PHYSMAP_LEN != 0
+#warning using PHYSMAP compat code
+#define PHYSMAP_COMPAT
+#endif
 #endif
-		add_mtd_device(mymtd);
 
-		return 0;
-	}
+#ifdef PHYSMAP_COMPAT
+static struct physmap_flash_data physmap_flash_data = {
+	.width		= CONFIG_MTD_PHYSMAP_BANKWIDTH,
+};
 
-	iounmap(physmap_map.virt);
-	return -ENXIO;
-}
+static struct resource physmap_flash_resource = {
+	.start		= CONFIG_MTD_PHYSMAP_START,
+	.end		= CONFIG_MTD_PHYSMAP_START + CONFIG_MTD_PHYSMAP_LEN,
+	.flags		= IORESOURCE_MEM,
+};
 
-static void __exit cleanup_physmap(void)
+static struct platform_device physmap_flash = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &physmap_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &physmap_flash_resource,
+};
+
+void physmap_configure(unsigned long addr, unsigned long size,
+		int bankwidth, void (*set_vpp)(struct map_info *, int))
 {
+	physmap_flash_resource.start = addr;
+	physmap_flash_resource.end = addr + size - 1;
+	physmap_flash_data.width = bankwidth;
+	physmap_flash_data.set_vpp = set_vpp;
+}
+
 #ifdef CONFIG_MTD_PARTITIONS
-	if (mtd_parts_nb) {
-		del_mtd_partitions(mymtd);
-		kfree(mtd_parts);
-	} else if (num_physmap_partitions) {
-		del_mtd_partitions(mymtd);
-	} else {
-		del_mtd_device(mymtd);
-	}
-#else
-	del_mtd_device(mymtd);
+void physmap_set_partitions(struct mtd_partition *parts, int num_parts)
+{
+	physmap_flash_data.nr_parts = num_parts;
+	physmap_flash_data.parts = parts;
+}
+#endif
 #endif
-	map_destroy(mymtd);
 
-	iounmap(physmap_map.virt);
-	physmap_map.virt = NULL;
+static int __init physmap_init(void)
+{
+	int err;
+
+	err = platform_driver_register(&physmap_flash_driver);
+#ifdef PHYSMAP_COMPAT
+	if (err == 0)
+		platform_device_register(&physmap_flash);
+#endif
+
+	return err;
 }
 
-module_init(init_physmap);
-module_exit(cleanup_physmap);
+static void __exit physmap_exit(void)
+{
+#ifdef PHYSMAP_COMPAT
+	platform_device_unregister(&physmap_flash);
+#endif
+	platform_driver_unregister(&physmap_flash_driver);
+}
 
+module_init(physmap_init);
+module_exit(physmap_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");

drivers/mtd/mtdblock.c

@@ -71,7 +71,7 @@ static int erase_write (struct mtd_info *mtd, unsigned long pos,
 	set_current_state(TASK_INTERRUPTIBLE);
 	add_wait_queue(&wait_q, &wait);
 
-	ret = MTD_ERASE(mtd, &erase);
+	ret = mtd->erase(mtd, &erase);
 	if (ret) {
 		set_current_state(TASK_RUNNING);
 		remove_wait_queue(&wait_q, &wait);
@@ -88,7 +88,7 @@ static int erase_write (struct mtd_info *mtd, unsigned long pos,
 	 * Next, writhe data to flash.
 	 */
 
-	ret = MTD_WRITE (mtd, pos, len, &retlen, buf);
+	ret = mtd->write(mtd, pos, len, &retlen, buf);
 	if (ret)
 		return ret;
 	if (retlen != len)
@@ -138,7 +138,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
 		mtd->name, pos, len);
 
 	if (!sect_size)
-		return MTD_WRITE (mtd, pos, len, &retlen, buf);
+		return mtd->write(mtd, pos, len, &retlen, buf);
 
 	while (len > 0) {
 		unsigned long sect_start = (pos/sect_size)*sect_size;
@@ -170,7 +170,8 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
 			    mtdblk->cache_offset != sect_start) {
 				/* fill the cache with the current sector */
 				mtdblk->cache_state = STATE_EMPTY;
-				ret = MTD_READ(mtd, sect_start, sect_size, &retlen, mtdblk->cache_data);
+				ret = mtd->read(mtd, sect_start, sect_size,
+						&retlen, mtdblk->cache_data);
 				if (ret)
 					return ret;
 				if (retlen != sect_size)
@@ -207,7 +208,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
 			mtd->name, pos, len);
 
 	if (!sect_size)
-		return MTD_READ (mtd, pos, len, &retlen, buf);
+		return mtd->read(mtd, pos, len, &retlen, buf);
 
 	while (len > 0) {
 		unsigned long sect_start = (pos/sect_size)*sect_size;
@@ -226,7 +227,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
 		    mtdblk->cache_offset == sect_start) {
 			memcpy (buf, mtdblk->cache_data + offset, size);
 		} else {
-			ret = MTD_READ (mtd, pos, size, &retlen, buf);
+			ret = mtd->read(mtd, pos, size, &retlen, buf);
 			if (ret)
 				return ret;
 			if (retlen != size)
@@ -288,8 +289,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
 
 	mutex_init(&mtdblk->cache_mutex);
 	mtdblk->cache_state = STATE_EMPTY;
-	if ((mtdblk->mtd->flags & MTD_CAP_RAM) != MTD_CAP_RAM &&
-	    mtdblk->mtd->erasesize) {
+	if ( !(mtdblk->mtd->flags & MTD_NO_ERASE) && mtdblk->mtd->erasesize) {
 		mtdblk->cache_size = mtdblk->mtd->erasesize;
 		mtdblk->cache_data = NULL;
 	}

drivers/mtd/mtdblock_ro.c

@@ -45,9 +45,7 @@ static void mtdblock_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 	dev->blksize = 512;
 	dev->size = mtd->size >> 9;
 	dev->tr = tr;
-	if ((mtd->flags & (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE)) !=
-	    (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE))
-		dev->readonly = 1;
+	dev->readonly = 1;
 
 	add_mtd_blktrans_dev(dev);
 }

drivers/mtd/mtdchar.c

@@ -49,24 +49,18 @@ static struct mtd_notifier notifier = {
 };
 
 /*
- * We use file->private_data to store a pointer to the MTDdevice.
- * Since alighment is at least 32 bits, we have 2 bits free for OTP
- * modes as well.
+ * Data structure to hold the pointer to the mtd device as well
+ * as mode information ofr various use cases.
  */
-
-#define TO_MTD(file) (struct mtd_info *)((long)((file)->private_data) & ~3L)
-
-#define MTD_MODE_OTP_FACT	1
-#define MTD_MODE_OTP_USER	2
-#define MTD_MODE(file)		((long)((file)->private_data) & 3)
-
-#define SET_MTD_MODE(file, mode) \
-	do { long __p = (long)((file)->private_data); \
-	     (file)->private_data = (void *)((__p & ~3L) | mode); } while (0)
+struct mtd_file_info {
+	struct mtd_info *mtd;
+	enum mtd_file_modes mode;
+};
 
 static loff_t mtd_lseek (struct file *file, loff_t offset, int orig)
 {
-	struct mtd_info *mtd = TO_MTD(file);
+	struct mtd_file_info *mfi = file->private_data;
+	struct mtd_info *mtd = mfi->mtd;
 
 	switch (orig) {
 	case 0:
@@ -97,6 +91,7 @@ static int mtd_open(struct inode *inode, struct file *file)
 	int minor = iminor(inode);
 	int devnum = minor >> 1;
 	struct mtd_info *mtd;
+	struct mtd_file_info *mfi;
 
 	DEBUG(MTD_DEBUG_LEVEL0, "MTD_open\n");
 
@@ -117,14 +112,20 @@ static int mtd_open(struct inode *inode, struct file *file)
 		return -ENODEV;
 	}
 
-	file->private_data = mtd;
-
 	/* You can't open it RW if it's not a writeable device */
 	if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) {
 		put_mtd_device(mtd);
 		return -EACCES;
 	}
 
+	mfi = kzalloc(sizeof(*mfi), GFP_KERNEL);
+	if (!mfi) {
+		put_mtd_device(mtd);
+		return -ENOMEM;
+	}
+	mfi->mtd = mtd;
+	file->private_data = mfi;
+
 	return 0;
 } /* mtd_open */
 
@@ -132,16 +133,17 @@ static int mtd_open(struct inode *inode, struct file *file)
 
 static int mtd_close(struct inode *inode, struct file *file)
 {
-	struct mtd_info *mtd;
+	struct mtd_file_info *mfi = file->private_data;
+	struct mtd_info *mtd = mfi->mtd;
 
 	DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n");
 
-	mtd = TO_MTD(file);
-
 	if (mtd->sync)
 		mtd->sync(mtd);
 
 	put_mtd_device(mtd);
+	file->private_data = NULL;
+	kfree(mfi);
 
 	return 0;
 } /* mtd_close */
@@ -153,7 +155,8 @@ static int mtd_close(struct inode *inode, struct file *file)
 
 static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t *ppos)
 {
-	struct mtd_info *mtd = TO_MTD(file);
+	struct mtd_file_info *mfi = file->private_data;
+	struct mtd_info *mtd = mfi->mtd;
 	size_t retlen=0;
 	size_t total_retlen=0;
 	int ret=0;
@@ -170,36 +173,58 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t
 
 	/* FIXME: Use kiovec in 2.5 to lock down the user's buffers
 	   and pass them directly to the MTD functions */
+
+	if (count > MAX_KMALLOC_SIZE)
+		kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
+	else
+		kbuf=kmalloc(count, GFP_KERNEL);
+
+	if (!kbuf)
+		return -ENOMEM;
+
 	while (count) {
+
 		if (count > MAX_KMALLOC_SIZE)
 			len = MAX_KMALLOC_SIZE;
 		else
 			len = count;
 
-		kbuf=kmalloc(len,GFP_KERNEL);
-		if (!kbuf)
-			return -ENOMEM;
-
-		switch (MTD_MODE(file)) {
-		case MTD_MODE_OTP_FACT:
+		switch (mfi->mode) {
+		case MTD_MODE_OTP_FACTORY:
 			ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf);
 			break;
 		case MTD_MODE_OTP_USER:
 			ret = mtd->read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
 			break;
+		case MTD_MODE_RAW:
+		{
+			struct mtd_oob_ops ops;
+
+			ops.mode = MTD_OOB_RAW;
+			ops.datbuf = kbuf;
+			ops.oobbuf = NULL;
+			ops.len = len;
+
+			ret = mtd->read_oob(mtd, *ppos, &ops);
+			retlen = ops.retlen;
+			break;
+		}
 		default:
-			ret = MTD_READ(mtd, *ppos, len, &retlen, kbuf);
+			ret = mtd->read(mtd, *ppos, len, &retlen, kbuf);
 		}
 		/* Nand returns -EBADMSG on ecc errors, but it returns
 		 * the data. For our userspace tools it is important
 		 * to dump areas with ecc errors !
+		 * For kernel internal usage it also might return -EUCLEAN
+		 * to signal the caller that a bitflip has occured and has
+		 * been corrected by the ECC algorithm.
 		 * Userspace software which accesses NAND this way
 		 * must be aware of the fact that it deals with NAND
 		 */
-		if (!ret || (ret == -EBADMSG)) {
+		if (!ret || (ret == -EUCLEAN) || (ret == -EBADMSG)) {
 			*ppos += retlen;
 			if (copy_to_user(buf, kbuf, retlen)) {
-			        kfree(kbuf);
+				kfree(kbuf);
 				return -EFAULT;
 			}
 			else
@@ -215,15 +240,16 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t
 			return ret;
 		}
 
-		kfree(kbuf);
 	}
 
+	kfree(kbuf);
 	return total_retlen;
 } /* mtd_read */
 
 static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count,loff_t *ppos)
 {
-	struct mtd_info *mtd = TO_MTD(file);
+	struct mtd_file_info *mfi = file->private_data;
+	struct mtd_info *mtd = mfi->mtd;
 	char *kbuf;
 	size_t retlen;
 	size_t total_retlen=0;
@@ -241,25 +267,28 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count
 	if (!count)
 		return 0;
 
+	if (count > MAX_KMALLOC_SIZE)
+		kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
+	else
+		kbuf=kmalloc(count, GFP_KERNEL);
+
+	if (!kbuf)
+		return -ENOMEM;
+
 	while (count) {
+
 		if (count > MAX_KMALLOC_SIZE)
 			len = MAX_KMALLOC_SIZE;
 		else
 			len = count;
 
-		kbuf=kmalloc(len,GFP_KERNEL);
-		if (!kbuf) {
-			printk("kmalloc is null\n");
-			return -ENOMEM;
-		}
-
 		if (copy_from_user(kbuf, buf, len)) {
 			kfree(kbuf);
 			return -EFAULT;
 		}
 
-		switch (MTD_MODE(file)) {
-		case MTD_MODE_OTP_FACT:
+		switch (mfi->mode) {
+		case MTD_MODE_OTP_FACTORY:
 			ret = -EROFS;
 			break;
 		case MTD_MODE_OTP_USER:
@@ -269,6 +298,21 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count
 			}
 			ret = mtd->write_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
 			break;
+
+		case MTD_MODE_RAW:
+		{
+			struct mtd_oob_ops ops;
+
+			ops.mode = MTD_OOB_RAW;
+			ops.datbuf = kbuf;
+			ops.oobbuf = NULL;
+			ops.len = len;
+
+			ret = mtd->write_oob(mtd, *ppos, &ops);
+			retlen = ops.retlen;
+			break;
+		}
+
 		default:
 			ret = (*(mtd->write))(mtd, *ppos, len, &retlen, kbuf);
 		}
@@ -282,10 +326,9 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count
 			kfree(kbuf);
 			return ret;
 		}
-
-		kfree(kbuf);
 	}
 
+	kfree(kbuf);
 	return total_retlen;
 } /* mtd_write */
 
@@ -299,13 +342,45 @@ static void mtdchar_erase_callback (struct erase_info *instr)
 	wake_up((wait_queue_head_t *)instr->priv);
 }
 
+#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP)
+static int otp_select_filemode(struct mtd_file_info *mfi, int mode)
+{
+	struct mtd_info *mtd = mfi->mtd;
+	int ret = 0;
+
+	switch (mode) {
+	case MTD_OTP_FACTORY:
+		if (!mtd->read_fact_prot_reg)
+			ret = -EOPNOTSUPP;
+		else
+			mfi->mode = MTD_MODE_OTP_FACTORY;
+		break;
+	case MTD_OTP_USER:
+		if (!mtd->read_fact_prot_reg)
+			ret = -EOPNOTSUPP;
+		else
+			mfi->mode = MTD_MODE_OTP_USER;
+		break;
+	default:
+		ret = -EINVAL;
+	case MTD_OTP_OFF:
+		break;
+	}
+	return ret;
+}
+#else
+# define otp_select_filemode(f,m)	-EOPNOTSUPP
+#endif
+
 static int mtd_ioctl(struct inode *inode, struct file *file,
 		     u_int cmd, u_long arg)
 {
-	struct mtd_info *mtd = TO_MTD(file);
+	struct mtd_file_info *mfi = file->private_data;
+	struct mtd_info *mtd = mfi->mtd;
 	void __user *argp = (void __user *)arg;
 	int ret = 0;
 	u_long size;
+	struct mtd_info_user info;
 
 	DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
 
@@ -341,7 +416,15 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 	}
 
 	case MEMGETINFO:
-		if (copy_to_user(argp, mtd, sizeof(struct mtd_info_user)))
+		info.type	= mtd->type;
+		info.flags	= mtd->flags;
+		info.size	= mtd->size;
+		info.erasesize	= mtd->erasesize;
+		info.writesize	= mtd->writesize;
+		info.oobsize	= mtd->oobsize;
+		info.ecctype	= mtd->ecctype;
+		info.eccsize	= mtd->eccsize;
+		if (copy_to_user(argp, &info, sizeof(struct mtd_info_user)))
 			return -EFAULT;
 		break;
 
@@ -400,8 +483,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 	case MEMWRITEOOB:
 	{
 		struct mtd_oob_buf buf;
-		void *databuf;
-		ssize_t retlen;
+		struct mtd_oob_ops ops;
 
 		if(!(file->f_mode & 2))
 			return -EPERM;
@@ -409,7 +491,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 		if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
 			return -EFAULT;
 
-		if (buf.length > 0x4096)
+		if (buf.length > 4096)
 			return -EINVAL;
 
 		if (!mtd->write_oob)
@@ -421,21 +503,32 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 		if (ret)
 			return ret;
 
-		databuf = kmalloc(buf.length, GFP_KERNEL);
-		if (!databuf)
+		ops.len = buf.length;
+		ops.ooblen = buf.length;
+		ops.ooboffs = buf.start & (mtd->oobsize - 1);
+		ops.datbuf = NULL;
+		ops.mode = MTD_OOB_PLACE;
+
+		if (ops.ooboffs && ops.len > (mtd->oobsize - ops.ooboffs))
+			return -EINVAL;
+
+		ops.oobbuf = kmalloc(buf.length, GFP_KERNEL);
+		if (!ops.oobbuf)
 			return -ENOMEM;
 
-		if (copy_from_user(databuf, buf.ptr, buf.length)) {
-			kfree(databuf);
+		if (copy_from_user(ops.oobbuf, buf.ptr, buf.length)) {
+			kfree(ops.oobbuf);
 			return -EFAULT;
 		}
 
-		ret = (mtd->write_oob)(mtd, buf.start, buf.length, &retlen, databuf);
+		buf.start &= ~(mtd->oobsize - 1);
+		ret = mtd->write_oob(mtd, buf.start, &ops);
 
-		if (copy_to_user(argp + sizeof(uint32_t), &retlen, sizeof(uint32_t)))
+		if (copy_to_user(argp + sizeof(uint32_t), &ops.retlen,
+				 sizeof(uint32_t)))
 			ret = -EFAULT;
 
-		kfree(databuf);
+		kfree(ops.oobbuf);
 		break;
 
 	}
@@ -443,13 +536,12 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 	case MEMREADOOB:
 	{
 		struct mtd_oob_buf buf;
-		void *databuf;
-		ssize_t retlen;
+		struct mtd_oob_ops ops;
 
 		if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
 			return -EFAULT;
 
-		if (buf.length > 0x4096)
+		if (buf.length > 4096)
 			return -EINVAL;
 
 		if (!mtd->read_oob)
@@ -457,22 +549,32 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 		else
 			ret = access_ok(VERIFY_WRITE, buf.ptr,
 					buf.length) ? 0 : -EFAULT;
-
 		if (ret)
 			return ret;
 
-		databuf = kmalloc(buf.length, GFP_KERNEL);
-		if (!databuf)
+		ops.len = buf.length;
+		ops.ooblen = buf.length;
+		ops.ooboffs = buf.start & (mtd->oobsize - 1);
+		ops.datbuf = NULL;
+		ops.mode = MTD_OOB_PLACE;
+
+		if (ops.ooboffs && ops.len > (mtd->oobsize - ops.ooboffs))
+			return -EINVAL;
+
+		ops.oobbuf = kmalloc(buf.length, GFP_KERNEL);
+		if (!ops.oobbuf)
 			return -ENOMEM;
 
-		ret = (mtd->read_oob)(mtd, buf.start, buf.length, &retlen, databuf);
+		buf.start &= ~(mtd->oobsize - 1);
+		ret = mtd->read_oob(mtd, buf.start, &ops);
 
-		if (put_user(retlen, (uint32_t __user *)argp))
+		if (put_user(ops.retlen, (uint32_t __user *)argp))
 			ret = -EFAULT;
-		else if (retlen && copy_to_user(buf.ptr, databuf, retlen))
+		else if (ops.retlen && copy_to_user(buf.ptr, ops.oobbuf,
+						    ops.retlen))
 			ret = -EFAULT;
 
-		kfree(databuf);
+		kfree(ops.oobbuf);
 		break;
 	}
 
@@ -504,16 +606,22 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 		break;
 	}
 
-	case MEMSETOOBSEL:
-	{
-		if (copy_from_user(&mtd->oobinfo, argp, sizeof(struct nand_oobinfo)))
-			return -EFAULT;
-		break;
-	}
-
+	/* Legacy interface */
 	case MEMGETOOBSEL:
 	{
-		if (copy_to_user(argp, &(mtd->oobinfo), sizeof(struct nand_oobinfo)))
+		struct nand_oobinfo oi;
+
+		if (!mtd->ecclayout)
+			return -EOPNOTSUPP;
+		if (mtd->ecclayout->eccbytes > ARRAY_SIZE(oi.eccpos))
+			return -EINVAL;
+
+		oi.useecc = MTD_NANDECC_AUTOPLACE;
+		memcpy(&oi.eccpos, mtd->ecclayout->eccpos, sizeof(oi.eccpos));
+		memcpy(&oi.oobfree, mtd->ecclayout->oobfree,
+		       sizeof(oi.oobfree));
+
+		if (copy_to_user(argp, &oi, sizeof(struct nand_oobinfo)))
 			return -EFAULT;
 		break;
 	}
@@ -544,31 +652,17 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 		break;
 	}
 
-#ifdef CONFIG_MTD_OTP
+#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP)
 	case OTPSELECT:
 	{
 		int mode;
 		if (copy_from_user(&mode, argp, sizeof(int)))
 			return -EFAULT;
-		SET_MTD_MODE(file, 0);
-		switch (mode) {
-		case MTD_OTP_FACTORY:
-			if (!mtd->read_fact_prot_reg)
-				ret = -EOPNOTSUPP;
-			else
-				SET_MTD_MODE(file, MTD_MODE_OTP_FACT);
-			break;
-		case MTD_OTP_USER:
-			if (!mtd->read_fact_prot_reg)
-				ret = -EOPNOTSUPP;
-			else
-				SET_MTD_MODE(file, MTD_MODE_OTP_USER);
-			break;
-		default:
-			ret = -EINVAL;
-		case MTD_OTP_OFF:
-			break;
-		}
+
+		mfi->mode = MTD_MODE_NORMAL;
+
+		ret = otp_select_filemode(mfi, mode);
+
 		file->f_pos = 0;
 		break;
 	}
@@ -580,8 +674,8 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 		if (!buf)
 			return -ENOMEM;
 		ret = -EOPNOTSUPP;
-		switch (MTD_MODE(file)) {
-		case MTD_MODE_OTP_FACT:
+		switch (mfi->mode) {
+		case MTD_MODE_OTP_FACTORY:
 			if (mtd->get_fact_prot_info)
 				ret = mtd->get_fact_prot_info(mtd, buf, 4096);
 			break;
@@ -589,6 +683,8 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 			if (mtd->get_user_prot_info)
 				ret = mtd->get_user_prot_info(mtd, buf, 4096);
 			break;
+		default:
+			break;
 		}
 		if (ret >= 0) {
 			if (cmd == OTPGETREGIONCOUNT) {
@@ -607,7 +703,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 	{
 		struct otp_info info;
 
-		if (MTD_MODE(file) != MTD_MODE_OTP_USER)
+		if (mfi->mode != MTD_MODE_OTP_USER)
 			return -EINVAL;
 		if (copy_from_user(&info, argp, sizeof(info)))
 			return -EFAULT;
@@ -618,6 +714,49 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 	}
 #endif
 
+	case ECCGETLAYOUT:
+	{
+		if (!mtd->ecclayout)
+			return -EOPNOTSUPP;
+
+		if (copy_to_user(argp, &mtd->ecclayout,
+				 sizeof(struct nand_ecclayout)))
+			return -EFAULT;
+		break;
+	}
+
+	case ECCGETSTATS:
+	{
+		if (copy_to_user(argp, &mtd->ecc_stats,
+				 sizeof(struct mtd_ecc_stats)))
+			return -EFAULT;
+		break;
+	}
+
+	case MTDFILEMODE:
+	{
+		mfi->mode = 0;
+
+		switch(arg) {
+		case MTD_MODE_OTP_FACTORY:
+		case MTD_MODE_OTP_USER:
+			ret = otp_select_filemode(mfi, arg);
+			break;
+
+		case MTD_MODE_RAW:
+			if (!mtd->read_oob || !mtd->write_oob)
+				return -EOPNOTSUPP;
+			mfi->mode = arg;
+
+		case MTD_MODE_NORMAL:
+			break;
+		default:
+			ret = -EINVAL;
+		}
+		file->f_pos = 0;
+		break;
+	}
+
 	default:
 		ret = -ENOTTY;
 	}

drivers/mtd/mtdconcat.c

@@ -19,6 +19,8 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/concat.h>
 
+#include <asm/div64.h>
+
 /*
  * Our storage structure:
  * Subdev points to an array of pointers to struct mtd_info objects
@@ -54,7 +56,7 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len,
 	    size_t * retlen, u_char * buf)
 {
 	struct mtd_concat *concat = CONCAT(mtd);
-	int err = -EINVAL;
+	int ret = 0, err;
 	int i;
 
 	*retlen = 0;
@@ -78,19 +80,29 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len,
 
 		err = subdev->read(subdev, from, size, &retsize, buf);
 
-		if (err)
-			break;
+		/* Save information about bitflips! */
+		if (unlikely(err)) {
+			if (err == -EBADMSG) {
+				mtd->ecc_stats.failed++;
+				ret = err;
+			} else if (err == -EUCLEAN) {
+				mtd->ecc_stats.corrected++;
+				/* Do not overwrite -EBADMSG !! */
+				if (!ret)
+					ret = err;
+			} else
+				return err;
+		}
 
 		*retlen += retsize;
 		len -= size;
 		if (len == 0)
-			break;
+			return ret;
 
-		err = -EINVAL;
 		buf += size;
 		from = 0;
 	}
-	return err;
+	return -EINVAL;
 }
 
 static int
@@ -141,211 +153,185 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len,
 }
 
 static int
-concat_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
-		size_t * retlen, u_char * buf, u_char * eccbuf,
-		struct nand_oobinfo *oobsel)
+concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
+		unsigned long count, loff_t to, size_t * retlen)
 {
 	struct mtd_concat *concat = CONCAT(mtd);
-	int err = -EINVAL;
+	struct kvec *vecs_copy;
+	unsigned long entry_low, entry_high;
+	size_t total_len = 0;
 	int i;
+	int err = -EINVAL;
 
-	*retlen = 0;
-
-	for (i = 0; i < concat->num_subdev; i++) {
-		struct mtd_info *subdev = concat->subdev[i];
-		size_t size, retsize;
-
-		if (from >= subdev->size) {
-			/* Not destined for this subdev */
-			size = 0;
-			from -= subdev->size;
-			continue;
-		}
-
-		if (from + len > subdev->size)
-			/* First part goes into this subdev */
-			size = subdev->size - from;
-		else
-			/* Entire transaction goes into this subdev */
-			size = len;
+	if (!(mtd->flags & MTD_WRITEABLE))
+		return -EROFS;
 
-		if (subdev->read_ecc)
-			err = subdev->read_ecc(subdev, from, size,
-					       &retsize, buf, eccbuf, oobsel);
-		else
-			err = -EINVAL;
+	*retlen = 0;
 
-		if (err)
-			break;
+	/* Calculate total length of data */
+	for (i = 0; i < count; i++)
+		total_len += vecs[i].iov_len;
 
-		*retlen += retsize;
-		len -= size;
-		if (len == 0)
-			break;
+	/* Do not allow write past end of device */
+	if ((to + total_len) > mtd->size)
+		return -EINVAL;
 
-		err = -EINVAL;
-		buf += size;
-		if (eccbuf) {
-			eccbuf += subdev->oobsize;
-			/* in nand.c at least, eccbufs are
-			   tagged with 2 (int)eccstatus'; we
-			   must account for these */
-			eccbuf += 2 * (sizeof (int));
-		}
-		from = 0;
+	/* Check alignment */
+	if (mtd->writesize > 1) {
+		loff_t __to = to;
+		if (do_div(__to, mtd->writesize) || (total_len % mtd->writesize))
+			return -EINVAL;
 	}
-	return err;
-}
 
-static int
-concat_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
-		 size_t * retlen, const u_char * buf, u_char * eccbuf,
-		 struct nand_oobinfo *oobsel)
-{
-	struct mtd_concat *concat = CONCAT(mtd);
-	int err = -EINVAL;
-	int i;
-
-	if (!(mtd->flags & MTD_WRITEABLE))
-		return -EROFS;
-
-	*retlen = 0;
+	/* make a copy of vecs */
+	vecs_copy = kmalloc(sizeof(struct kvec) * count, GFP_KERNEL);
+	if (!vecs_copy)
+		return -ENOMEM;
+	memcpy(vecs_copy, vecs, sizeof(struct kvec) * count);
 
+	entry_low = 0;
 	for (i = 0; i < concat->num_subdev; i++) {
 		struct mtd_info *subdev = concat->subdev[i];
-		size_t size, retsize;
+		size_t size, wsize, retsize, old_iov_len;
 
 		if (to >= subdev->size) {
-			size = 0;
 			to -= subdev->size;
 			continue;
 		}
-		if (to + len > subdev->size)
-			size = subdev->size - to;
-		else
-			size = len;
+
+		size = min(total_len, (size_t)(subdev->size - to));
+		wsize = size; /* store for future use */
+
+		entry_high = entry_low;
+		while (entry_high < count) {
+			if (size <= vecs_copy[entry_high].iov_len)
+				break;
+			size -= vecs_copy[entry_high++].iov_len;
+		}
+
+		old_iov_len = vecs_copy[entry_high].iov_len;
+		vecs_copy[entry_high].iov_len = size;
 
 		if (!(subdev->flags & MTD_WRITEABLE))
 			err = -EROFS;
-		else if (subdev->write_ecc)
-			err = subdev->write_ecc(subdev, to, size,
-						&retsize, buf, eccbuf, oobsel);
 		else
-			err = -EINVAL;
+			err = subdev->writev(subdev, &vecs_copy[entry_low],
+				entry_high - entry_low + 1, to, &retsize);
+
+		vecs_copy[entry_high].iov_len = old_iov_len - size;
+		vecs_copy[entry_high].iov_base += size;
+
+		entry_low = entry_high;
 
 		if (err)
 			break;
 
 		*retlen += retsize;
-		len -= size;
-		if (len == 0)
+		total_len -= wsize;
+
+		if (total_len == 0)
 			break;
 
 		err = -EINVAL;
-		buf += size;
-		if (eccbuf)
-			eccbuf += subdev->oobsize;
 		to = 0;
 	}
+
+	kfree(vecs_copy);
 	return err;
 }
 
 static int
-concat_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
-		size_t * retlen, u_char * buf)
+concat_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops)
 {
 	struct mtd_concat *concat = CONCAT(mtd);
-	int err = -EINVAL;
-	int i;
+	struct mtd_oob_ops devops = *ops;
+	int i, err, ret = 0;
 
-	*retlen = 0;
+	ops->retlen = 0;
 
 	for (i = 0; i < concat->num_subdev; i++) {
 		struct mtd_info *subdev = concat->subdev[i];
-		size_t size, retsize;
 
 		if (from >= subdev->size) {
-			/* Not destined for this subdev */
-			size = 0;
 			from -= subdev->size;
 			continue;
 		}
-		if (from + len > subdev->size)
-			/* First part goes into this subdev */
-			size = subdev->size - from;
-		else
-			/* Entire transaction goes into this subdev */
-			size = len;
 
-		if (subdev->read_oob)
-			err = subdev->read_oob(subdev, from, size,
-					       &retsize, buf);
-		else
-			err = -EINVAL;
+		/* partial read ? */
+		if (from + devops.len > subdev->size)
+			devops.len = subdev->size - from;
+
+		err = subdev->read_oob(subdev, from, &devops);
+		ops->retlen += devops.retlen;
+
+		/* Save information about bitflips! */
+		if (unlikely(err)) {
+			if (err == -EBADMSG) {
+				mtd->ecc_stats.failed++;
+				ret = err;
+			} else if (err == -EUCLEAN) {
+				mtd->ecc_stats.corrected++;
+				/* Do not overwrite -EBADMSG !! */
+				if (!ret)
+					ret = err;
+			} else
+				return err;
+		}
 
-		if (err)
-			break;
+		devops.len = ops->len - ops->retlen;
+		if (!devops.len)
+			return ret;
 
-		*retlen += retsize;
-		len -= size;
-		if (len == 0)
-			break;
+		if (devops.datbuf)
+			devops.datbuf += devops.retlen;
+		if (devops.oobbuf)
+			devops.oobbuf += devops.ooblen;
 
-		err = -EINVAL;
-		buf += size;
 		from = 0;
 	}
-	return err;
+	return -EINVAL;
 }
 
 static int
-concat_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
-		 size_t * retlen, const u_char * buf)
+concat_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops)
 {
 	struct mtd_concat *concat = CONCAT(mtd);
-	int err = -EINVAL;
-	int i;
+	struct mtd_oob_ops devops = *ops;
+	int i, err;
 
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
 
-	*retlen = 0;
+	ops->retlen = 0;
 
 	for (i = 0; i < concat->num_subdev; i++) {
 		struct mtd_info *subdev = concat->subdev[i];
-		size_t size, retsize;
 
 		if (to >= subdev->size) {
-			size = 0;
 			to -= subdev->size;
 			continue;
 		}
-		if (to + len > subdev->size)
-			size = subdev->size - to;
-		else
-			size = len;
 
-		if (!(subdev->flags & MTD_WRITEABLE))
-			err = -EROFS;
-		else if (subdev->write_oob)
-			err = subdev->write_oob(subdev, to, size, &retsize,
-						buf);
-		else
-			err = -EINVAL;
+		/* partial write ? */
+		if (to + devops.len > subdev->size)
+			devops.len = subdev->size - to;
 
+		err = subdev->write_oob(subdev, to, &devops);
+		ops->retlen += devops.retlen;
 		if (err)
-			break;
+			return err;
 
-		*retlen += retsize;
-		len -= size;
-		if (len == 0)
-			break;
+		devops.len = ops->len - ops->retlen;
+		if (!devops.len)
+			return 0;
 
-		err = -EINVAL;
-		buf += size;
+		if (devops.datbuf)
+			devops.datbuf += devops.retlen;
+		if (devops.oobbuf)
+			devops.oobbuf += devops.ooblen;
 		to = 0;
 	}
-	return err;
+	return -EINVAL;
 }
 
 static void concat_erase_callback(struct erase_info *instr)
@@ -636,6 +622,60 @@ static void concat_resume(struct mtd_info *mtd)
 	}
 }
 
+static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs)
+{
+	struct mtd_concat *concat = CONCAT(mtd);
+	int i, res = 0;
+
+	if (!concat->subdev[0]->block_isbad)
+		return res;
+
+	if (ofs > mtd->size)
+		return -EINVAL;
+
+	for (i = 0; i < concat->num_subdev; i++) {
+		struct mtd_info *subdev = concat->subdev[i];
+
+		if (ofs >= subdev->size) {
+			ofs -= subdev->size;
+			continue;
+		}
+
+		res = subdev->block_isbad(subdev, ofs);
+		break;
+	}
+
+	return res;
+}
+
+static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+	struct mtd_concat *concat = CONCAT(mtd);
+	int i, err = -EINVAL;
+
+	if (!concat->subdev[0]->block_markbad)
+		return 0;
+
+	if (ofs > mtd->size)
+		return -EINVAL;
+
+	for (i = 0; i < concat->num_subdev; i++) {
+		struct mtd_info *subdev = concat->subdev[i];
+
+		if (ofs >= subdev->size) {
+			ofs -= subdev->size;
+			continue;
+		}
+
+		err = subdev->block_markbad(subdev, ofs);
+		if (!err)
+			mtd->ecc_stats.badblocks++;
+		break;
+	}
+
+	return err;
+}
+
 /*
  * This function constructs a virtual MTD device by concatenating
  * num_devs MTD devices. A pointer to the new device object is
@@ -677,18 +717,22 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
 	concat->mtd.flags = subdev[0]->flags;
 	concat->mtd.size = subdev[0]->size;
 	concat->mtd.erasesize = subdev[0]->erasesize;
-	concat->mtd.oobblock = subdev[0]->oobblock;
+	concat->mtd.writesize = subdev[0]->writesize;
 	concat->mtd.oobsize = subdev[0]->oobsize;
 	concat->mtd.ecctype = subdev[0]->ecctype;
 	concat->mtd.eccsize = subdev[0]->eccsize;
-	if (subdev[0]->read_ecc)
-		concat->mtd.read_ecc = concat_read_ecc;
-	if (subdev[0]->write_ecc)
-		concat->mtd.write_ecc = concat_write_ecc;
+	if (subdev[0]->writev)
+		concat->mtd.writev = concat_writev;
 	if (subdev[0]->read_oob)
 		concat->mtd.read_oob = concat_read_oob;
 	if (subdev[0]->write_oob)
 		concat->mtd.write_oob = concat_write_oob;
+	if (subdev[0]->block_isbad)
+		concat->mtd.block_isbad = concat_block_isbad;
+	if (subdev[0]->block_markbad)
+		concat->mtd.block_markbad = concat_block_markbad;
+
+	concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks;
 
 	concat->subdev[0] = subdev[0];
 
@@ -717,12 +761,12 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
 				    subdev[i]->flags & MTD_WRITEABLE;
 		}
 		concat->mtd.size += subdev[i]->size;
-		if (concat->mtd.oobblock   !=  subdev[i]->oobblock ||
+		concat->mtd.ecc_stats.badblocks +=
+			subdev[i]->ecc_stats.badblocks;
+		if (concat->mtd.writesize   !=  subdev[i]->writesize ||
 		    concat->mtd.oobsize    !=  subdev[i]->oobsize ||
 		    concat->mtd.ecctype    !=  subdev[i]->ecctype ||
 		    concat->mtd.eccsize    !=  subdev[i]->eccsize ||
-		    !concat->mtd.read_ecc  != !subdev[i]->read_ecc ||
-		    !concat->mtd.write_ecc != !subdev[i]->write_ecc ||
 		    !concat->mtd.read_oob  != !subdev[i]->read_oob ||
 		    !concat->mtd.write_oob != !subdev[i]->write_oob) {
 			kfree(concat);
@@ -734,14 +778,11 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
 
 	}
 
+	concat->mtd.ecclayout = subdev[0]->ecclayout;
+
 	concat->num_subdev = num_devs;
 	concat->mtd.name = name;
 
-	/*
-	 * NOTE: for now, we do not provide any readv()/writev() methods
-	 *       because they are messy to implement and they are not
-	 *       used to a great extent anyway.
-	 */
 	concat->mtd.erase = concat_erase;
 	concat->mtd.read = concat_read;
 	concat->mtd.write = concat_write;

drivers/mtd/mtdcore.c

@@ -47,6 +47,7 @@ int add_mtd_device(struct mtd_info *mtd)
 {
 	int i;
 
+	BUG_ON(mtd->writesize == 0);
 	mutex_lock(&mtd_table_mutex);
 
 	for (i=0; i < MAX_MTD_DEVICES; i++)
@@ -254,37 +255,6 @@ int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
 	return ret;
 }
 
-
-/* default_mtd_readv - default mtd readv method for MTD devices that dont
- *		       implement their own
- */
-
-int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs,
-		      unsigned long count, loff_t from, size_t *retlen)
-{
-	unsigned long i;
-	size_t totlen = 0, thislen;
-	int ret = 0;
-
-	if(!mtd->read) {
-		ret = -EIO;
-	} else {
-		for (i=0; i<count; i++) {
-			if (!vecs[i].iov_len)
-				continue;
-			ret = mtd->read(mtd, from, vecs[i].iov_len, &thislen, vecs[i].iov_base);
-			totlen += thislen;
-			if (ret || thislen != vecs[i].iov_len)
-				break;
-			from += vecs[i].iov_len;
-		}
-	}
-	if (retlen)
-		*retlen = totlen;
-	return ret;
-}
-
-
 EXPORT_SYMBOL(add_mtd_device);
 EXPORT_SYMBOL(del_mtd_device);
 EXPORT_SYMBOL(get_mtd_device);
@@ -292,7 +262,6 @@ EXPORT_SYMBOL(put_mtd_device);
 EXPORT_SYMBOL(register_mtd_user);
 EXPORT_SYMBOL(unregister_mtd_user);
 EXPORT_SYMBOL(default_mtd_writev);
-EXPORT_SYMBOL(default_mtd_readv);
 
 #ifdef CONFIG_PROC_FS
 

drivers/mtd/mtdpart.c

@@ -51,16 +51,21 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
 			size_t *retlen, u_char *buf)
 {
 	struct mtd_part *part = PART(mtd);
+	int res;
+
 	if (from >= mtd->size)
 		len = 0;
 	else if (from + len > mtd->size)
 		len = mtd->size - from;
-	if (part->master->read_ecc == NULL)
-		return part->master->read (part->master, from + part->offset,
-					len, retlen, buf);
-	else
-		return part->master->read_ecc (part->master, from + part->offset,
-					len, retlen, buf, NULL, &mtd->oobinfo);
+	res = part->master->read (part->master, from + part->offset,
+				   len, retlen, buf);
+	if (unlikely(res)) {
+		if (res == -EUCLEAN)
+			mtd->ecc_stats.corrected++;
+		if (res == -EBADMSG)
+			mtd->ecc_stats.failed++;
+	}
+	return res;
 }
 
 static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
@@ -74,6 +79,7 @@ static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
 	return part->master->point (part->master, from + part->offset,
 				    len, retlen, buf);
 }
+
 static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
 {
 	struct mtd_part *part = PART(mtd);
@@ -81,31 +87,25 @@ static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_
 	part->master->unpoint (part->master, addr, from + part->offset, len);
 }
 
-
-static int part_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
-			size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int part_read_oob(struct mtd_info *mtd, loff_t from,
+			 struct mtd_oob_ops *ops)
 {
 	struct mtd_part *part = PART(mtd);
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
-	if (from >= mtd->size)
-		len = 0;
-	else if (from + len > mtd->size)
-		len = mtd->size - from;
-	return part->master->read_ecc (part->master, from + part->offset,
-					len, retlen, buf, eccbuf, oobsel);
-}
+	int res;
 
-static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len,
-			size_t *retlen, u_char *buf)
-{
-	struct mtd_part *part = PART(mtd);
 	if (from >= mtd->size)
-		len = 0;
-	else if (from + len > mtd->size)
-		len = mtd->size - from;
-	return part->master->read_oob (part->master, from + part->offset,
-					len, retlen, buf);
+		return -EINVAL;
+	if (from + ops->len > mtd->size)
+		return -EINVAL;
+	res = part->master->read_oob(part->master, from + part->offset, ops);
+
+	if (unlikely(res)) {
+		if (res == -EUCLEAN)
+			mtd->ecc_stats.corrected++;
+		if (res == -EBADMSG)
+			mtd->ecc_stats.failed++;
+	}
+	return res;
 }
 
 static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -148,44 +148,23 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len,
 		len = 0;
 	else if (to + len > mtd->size)
 		len = mtd->size - to;
-	if (part->master->write_ecc == NULL)
-		return part->master->write (part->master, to + part->offset,
-					len, retlen, buf);
-	else
-		return part->master->write_ecc (part->master, to + part->offset,
-					len, retlen, buf, NULL, &mtd->oobinfo);
-
+	return part->master->write (part->master, to + part->offset,
+				    len, retlen, buf);
 }
 
-static int part_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
-			size_t *retlen, const u_char *buf,
-			 u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int part_write_oob(struct mtd_info *mtd, loff_t to,
+			 struct mtd_oob_ops *ops)
 {
 	struct mtd_part *part = PART(mtd);
-	if (!(mtd->flags & MTD_WRITEABLE))
-		return -EROFS;
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
-	if (to >= mtd->size)
-		len = 0;
-	else if (to + len > mtd->size)
-		len = mtd->size - to;
-	return part->master->write_ecc (part->master, to + part->offset,
-					len, retlen, buf, eccbuf, oobsel);
-}
 
-static int part_write_oob (struct mtd_info *mtd, loff_t to, size_t len,
-			size_t *retlen, const u_char *buf)
-{
-	struct mtd_part *part = PART(mtd);
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
+
 	if (to >= mtd->size)
-		len = 0;
-	else if (to + len > mtd->size)
-		len = mtd->size - to;
-	return part->master->write_oob (part->master, to + part->offset,
-					len, retlen, buf);
+		return -EINVAL;
+	if (to + ops->len > mtd->size)
+		return -EINVAL;
+	return part->master->write_oob(part->master, to + part->offset, ops);
 }
 
 static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -208,52 +187,8 @@ static int part_writev (struct mtd_info *mtd,  const struct kvec *vecs,
 	struct mtd_part *part = PART(mtd);
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
-	if (part->master->writev_ecc == NULL)
-		return part->master->writev (part->master, vecs, count,
+	return part->master->writev (part->master, vecs, count,
 					to + part->offset, retlen);
-	else
-		return part->master->writev_ecc (part->master, vecs, count,
-					to + part->offset, retlen,
-					NULL, &mtd->oobinfo);
-}
-
-static int part_readv (struct mtd_info *mtd,  struct kvec *vecs,
-			 unsigned long count, loff_t from, size_t *retlen)
-{
-	struct mtd_part *part = PART(mtd);
-	if (part->master->readv_ecc == NULL)
-		return part->master->readv (part->master, vecs, count,
-					from + part->offset, retlen);
-	else
-		return part->master->readv_ecc (part->master, vecs, count,
-					from + part->offset, retlen,
-					NULL, &mtd->oobinfo);
-}
-
-static int part_writev_ecc (struct mtd_info *mtd,  const struct kvec *vecs,
-			 unsigned long count, loff_t to, size_t *retlen,
-			 u_char *eccbuf,  struct nand_oobinfo *oobsel)
-{
-	struct mtd_part *part = PART(mtd);
-	if (!(mtd->flags & MTD_WRITEABLE))
-		return -EROFS;
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
-	return part->master->writev_ecc (part->master, vecs, count,
-					to + part->offset, retlen,
-					eccbuf, oobsel);
-}
-
-static int part_readv_ecc (struct mtd_info *mtd,  struct kvec *vecs,
-			 unsigned long count, loff_t from, size_t *retlen,
-			 u_char *eccbuf,  struct nand_oobinfo *oobsel)
-{
-	struct mtd_part *part = PART(mtd);
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
-	return part->master->readv_ecc (part->master, vecs, count,
-					from + part->offset, retlen,
-					eccbuf, oobsel);
 }
 
 static int part_erase (struct mtd_info *mtd, struct erase_info *instr)
@@ -329,12 +264,17 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs)
 static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
 {
 	struct mtd_part *part = PART(mtd);
+	int res;
+
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
 	if (ofs >= mtd->size)
 		return -EINVAL;
 	ofs += part->offset;
-	return part->master->block_markbad(part->master, ofs);
+	res = part->master->block_markbad(part->master, ofs);
+	if (!res)
+		mtd->ecc_stats.badblocks++;
+	return res;
 }
 
 /*
@@ -398,7 +338,7 @@ int add_mtd_partitions(struct mtd_info *master,
 		slave->mtd.type = master->type;
 		slave->mtd.flags = master->flags & ~parts[i].mask_flags;
 		slave->mtd.size = parts[i].size;
-		slave->mtd.oobblock = master->oobblock;
+		slave->mtd.writesize = master->writesize;
 		slave->mtd.oobsize = master->oobsize;
 		slave->mtd.ecctype = master->ecctype;
 		slave->mtd.eccsize = master->eccsize;
@@ -415,10 +355,6 @@ int add_mtd_partitions(struct mtd_info *master,
 			slave->mtd.unpoint = part_unpoint;
 		}
 
-		if (master->read_ecc)
-			slave->mtd.read_ecc = part_read_ecc;
-		if (master->write_ecc)
-			slave->mtd.write_ecc = part_write_ecc;
 		if (master->read_oob)
 			slave->mtd.read_oob = part_read_oob;
 		if (master->write_oob)
@@ -443,12 +379,6 @@ int add_mtd_partitions(struct mtd_info *master,
 		}
 		if (master->writev)
 			slave->mtd.writev = part_writev;
-		if (master->readv)
-			slave->mtd.readv = part_readv;
-		if (master->writev_ecc)
-			slave->mtd.writev_ecc = part_writev_ecc;
-		if (master->readv_ecc)
-			slave->mtd.readv_ecc = part_readv_ecc;
 		if (master->lock)
 			slave->mtd.lock = part_lock;
 		if (master->unlock)
@@ -528,8 +458,17 @@ int add_mtd_partitions(struct mtd_info *master,
 				parts[i].name);
 		}
 
-		/* copy oobinfo from master */
-		memcpy(&slave->mtd.oobinfo, &master->oobinfo, sizeof(slave->mtd.oobinfo));
+		slave->mtd.ecclayout = master->ecclayout;
+		if (master->block_isbad) {
+			uint32_t offs = 0;
+
+			while(offs < slave->mtd.size) {
+				if (master->block_isbad(master,
+							offs + slave->offset))
+					slave->mtd.ecc_stats.badblocks++;
+				offs += slave->mtd.erasesize;
+			}
+		}
 
 		if(parts[i].mtdp)
 		{	/* store the object pointer (caller may or may not register it */

drivers/mtd/nand/Kconfig

@@ -23,6 +23,14 @@ config MTD_NAND_VERIFY_WRITE
 	  device thinks the write was successful, a bit could have been
 	  flipped accidentaly due to device wear or something else.
 
+config MTD_NAND_ECC_SMC
+	bool "NAND ECC Smart Media byte order"
+	depends on MTD_NAND
+	default n
+	help
+	  Software ECC according to the Smart Media Specification.
+	  The original Linux implementation had byte 0 and 1 swapped.
+
 config MTD_NAND_AUTCPU12
 	tristate "SmartMediaCard on autronix autcpu12 board"
 	depends on MTD_NAND && ARCH_AUTCPU12
@@ -49,12 +57,24 @@ config MTD_NAND_SPIA
 	help
 	  If you had to ask, you don't have one. Say 'N'.
 
+config MTD_NAND_AMS_DELTA
+	tristate "NAND Flash device on Amstrad E3"
+	depends on MACH_AMS_DELTA && MTD_NAND
+	help
+	  Support for NAND flash on Amstrad E3 (Delta).
+
 config MTD_NAND_TOTO
 	tristate "NAND Flash device on TOTO board"
-	depends on ARCH_OMAP && MTD_NAND
+	depends on ARCH_OMAP && MTD_NAND && BROKEN
 	help
 	  Support for NAND flash on Texas Instruments Toto platform.
 
+config MTD_NAND_TS7250
+	tristate "NAND Flash device on TS-7250 board"
+	depends on MACH_TS72XX && MTD_NAND
+	help
+	  Support for NAND flash on Technologic Systems TS-7250 platform.
+
 config MTD_NAND_IDS
 	tristate
 
@@ -76,7 +96,7 @@ config MTD_NAND_RTC_FROM4
 
 config MTD_NAND_PPCHAMELEONEVB
 	tristate "NAND Flash device on PPChameleonEVB board"
-	depends on PPCHAMELEONEVB && MTD_NAND
+	depends on PPCHAMELEONEVB && MTD_NAND && BROKEN
 	help
 	  This enables the NAND flash driver on the PPChameleon EVB Board.
 
@@ -87,7 +107,7 @@ config MTD_NAND_S3C2410
 	  This enables the NAND flash controller on the S3C2410 and S3C2440
 	  SoCs
 
-	  No board specfic support is done by this driver, each board
+	  No board specific support is done by this driver, each board
 	  must advertise a platform_device for the driver to attach.
 
 config MTD_NAND_S3C2410_DEBUG
@@ -109,6 +129,22 @@ config MTD_NAND_S3C2410_HWECC
 	  currently not be able to switch to software, as there is no
 	  implementation for ECC method used by the S3C2410
 
+config MTD_NAND_NDFC
+	tristate "NDFC NanD Flash Controller"
+	depends on MTD_NAND && 44x
+	help
+	 NDFC Nand Flash Controllers are integrated in EP44x SoCs
+
+config MTD_NAND_S3C2410_CLKSTOP
+	bool "S3C2410 NAND IDLE clock stop"
+	depends on MTD_NAND_S3C2410
+	default n
+	help
+	  Stop the clock to the NAND controller when there is no chip
+	  selected to save power. This will mean there is a small delay
+	  when the is NAND chip selected or released, but will save
+	  approximately 5mA of power when there is nothing happening.
+
 config MTD_NAND_DISKONCHIP
 	tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)"
 	depends on MTD_NAND && EXPERIMENTAL
@@ -183,11 +219,24 @@ config MTD_NAND_SHARPSL
 	tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
 	depends on MTD_NAND && ARCH_PXA
 
+config MTD_NAND_CS553X
+	tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)"
+	depends on MTD_NAND && X86_32 && (X86_PC || X86_GENERICARCH)
+	help
+	  The CS553x companion chips for the AMD Geode processor
+	  include NAND flash controllers with built-in hardware ECC
+	  capabilities; enabling this option will allow you to use
+	  these. The driver will check the MSRs to verify that the
+	  controller is enabled for NAND, and currently requires that
+	  the controller be in MMIO mode.
+
+	  If you say "m", the module will be called "cs553x_nand.ko".
+
 config MTD_NAND_NANDSIM
 	tristate "Support for NAND Flash Simulator"
 	depends on MTD_NAND && MTD_PARTITIONS
 	help
-	  The simulator may simulate verious NAND flash chips for the
+	  The simulator may simulate various NAND flash chips for the
 	  MTD nand layer.
 
 endmenu

drivers/mtd/nand/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_MTD_NAND)			+= nand.o nand_ecc.o
 obj-$(CONFIG_MTD_NAND_IDS)		+= nand_ids.o
 
 obj-$(CONFIG_MTD_NAND_SPIA)		+= spia.o
+obj-$(CONFIG_MTD_NAND_AMS_DELTA)	+= ams-delta.o
 obj-$(CONFIG_MTD_NAND_TOTO)		+= toto.o
 obj-$(CONFIG_MTD_NAND_AUTCPU12)		+= autcpu12.o
 obj-$(CONFIG_MTD_NAND_EDB7312)		+= edb7312.o
@@ -17,6 +18,9 @@ obj-$(CONFIG_MTD_NAND_DISKONCHIP)	+= diskonchip.o
 obj-$(CONFIG_MTD_NAND_H1900)		+= h1910.o
 obj-$(CONFIG_MTD_NAND_RTC_FROM4)	+= rtc_from4.o
 obj-$(CONFIG_MTD_NAND_SHARPSL)		+= sharpsl.o
+obj-$(CONFIG_MTD_NAND_TS7250)		+= ts7250.o
 obj-$(CONFIG_MTD_NAND_NANDSIM)		+= nandsim.o
+obj-$(CONFIG_MTD_NAND_CS553X)		+= cs553x_nand.o
+obj-$(CONFIG_MTD_NAND_NDFC)		+= ndfc.o
 
 nand-objs = nand_base.o nand_bbt.o

drivers/mtd/nand/ams-delta.c

@@ -0,0 +1,237 @@
+/*
+ *  drivers/mtd/nand/ams-delta.c
+ *
+ *  Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
+ *
+ *  Derived from drivers/mtd/toto.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Overview:
+ *   This is a device driver for the NAND flash device found on the
+ *   Amstrad E3 (Delta).
+ */
+
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/sizes.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/board-ams-delta.h>
+
+/*
+ * MTD structure for E3 (Delta)
+ */
+static struct mtd_info *ams_delta_mtd = NULL;
+
+#define NAND_MASK (AMS_DELTA_LATCH2_NAND_NRE | AMS_DELTA_LATCH2_NAND_NWE | AMS_DELTA_LATCH2_NAND_CLE | AMS_DELTA_LATCH2_NAND_ALE | AMS_DELTA_LATCH2_NAND_NCE | AMS_DELTA_LATCH2_NAND_NWP)
+
+/*
+ * Define partitions for flash devices
+ */
+
+static struct mtd_partition partition_info[] = {
+	{ .name		= "Kernel",
+	  .offset	= 0,
+	  .size		= 3 * SZ_1M + SZ_512K },
+	{ .name		= "u-boot",
+	  .offset	= 3 * SZ_1M + SZ_512K,
+	  .size		= SZ_256K },
+	{ .name		= "u-boot params",
+	  .offset	= 3 * SZ_1M + SZ_512K + SZ_256K,
+	  .size		= SZ_256K },
+	{ .name		= "Amstrad LDR",
+	  .offset	= 4 * SZ_1M,
+	  .size		= SZ_256K },
+	{ .name		= "File system",
+	  .offset	= 4 * SZ_1M + 1 * SZ_256K,
+	  .size		= 27 * SZ_1M },
+	{ .name		= "PBL reserved",
+	  .offset	= 32 * SZ_1M - 3 * SZ_256K,
+	  .size		=  3 * SZ_256K },
+};
+
+static void ams_delta_write_byte(struct mtd_info *mtd, u_char byte)
+{
+	struct nand_chip *this = mtd->priv;
+
+	omap_writew(0, (OMAP_MPUIO_BASE + OMAP_MPUIO_IO_CNTL));
+	omap_writew(byte, this->IO_ADDR_W);
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NWE, 0);
+	ndelay(40);
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NWE,
+			       AMS_DELTA_LATCH2_NAND_NWE);
+}
+
+static u_char ams_delta_read_byte(struct mtd_info *mtd)
+{
+	u_char res;
+	struct nand_chip *this = mtd->priv;
+
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NRE, 0);
+	ndelay(40);
+	omap_writew(~0, (OMAP_MPUIO_BASE + OMAP_MPUIO_IO_CNTL));
+	res = omap_readw(this->IO_ADDR_R);
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NRE,
+			       AMS_DELTA_LATCH2_NAND_NRE);
+
+	return res;
+}
+
+static void ams_delta_write_buf(struct mtd_info *mtd, const u_char *buf,
+				int len)
+{
+	int i;
+
+	for (i=0; i<len; i++)
+		ams_delta_write_byte(mtd, buf[i]);
+}
+
+static void ams_delta_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+{
+	int i;
+
+	for (i=0; i<len; i++)
+		buf[i] = ams_delta_read_byte(mtd);
+}
+
+static int ams_delta_verify_buf(struct mtd_info *mtd, const u_char *buf,
+				int len)
+{
+	int i;
+
+	for (i=0; i<len; i++)
+		if (buf[i] != ams_delta_read_byte(mtd))
+			return -EFAULT;
+
+	return 0;
+}
+
+/*
+ * Command control function
+ *
+ * ctrl:
+ * NAND_NCE: bit 0 -> bit 2
+ * NAND_CLE: bit 1 -> bit 7
+ * NAND_ALE: bit 2 -> bit 6
+ */
+static void ams_delta_hwcontrol(struct mtd_info *mtd, int cmd,
+				unsigned int ctrl)
+{
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned long bits;
+
+		bits = (~ctrl & NAND_NCE) << 2;
+		bits |= (ctrl & NAND_CLE) << 7;
+		bits |= (ctrl & NAND_ALE) << 6;
+
+		ams_delta_latch2_write(0xC2, bits);
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		ams_delta_write_byte(mtd, cmd);
+}
+
+static int ams_delta_nand_ready(struct mtd_info *mtd)
+{
+	return omap_get_gpio_datain(AMS_DELTA_GPIO_PIN_NAND_RB);
+}
+
+/*
+ * Main initialization routine
+ */
+static int __init ams_delta_init(void)
+{
+	struct nand_chip *this;
+	int err = 0;
+
+	/* Allocate memory for MTD device structure and private data */
+	ams_delta_mtd = kmalloc(sizeof(struct mtd_info) +
+				sizeof(struct nand_chip), GFP_KERNEL);
+	if (!ams_delta_mtd) {
+		printk (KERN_WARNING "Unable to allocate E3 NAND MTD device structure.\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	ams_delta_mtd->owner = THIS_MODULE;
+
+	/* Get pointer to private data */
+	this = (struct nand_chip *) (&ams_delta_mtd[1]);
+
+	/* Initialize structures */
+	memset(ams_delta_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
+
+	/* Link the private data with the MTD structure */
+	ams_delta_mtd->priv = this;
+
+	/* Set address of NAND IO lines */
+	this->IO_ADDR_R = (OMAP_MPUIO_BASE + OMAP_MPUIO_INPUT_LATCH);
+	this->IO_ADDR_W = (OMAP_MPUIO_BASE + OMAP_MPUIO_OUTPUT);
+	this->read_byte = ams_delta_read_byte;
+	this->write_buf = ams_delta_write_buf;
+	this->read_buf = ams_delta_read_buf;
+	this->verify_buf = ams_delta_verify_buf;
+	this->cmd_ctrl = ams_delta_hwcontrol;
+	if (!omap_request_gpio(AMS_DELTA_GPIO_PIN_NAND_RB)) {
+		this->dev_ready = ams_delta_nand_ready;
+	} else {
+		this->dev_ready = NULL;
+		printk(KERN_NOTICE "Couldn't request gpio for Delta NAND ready.\n");
+	}
+	/* 25 us command delay time */
+	this->chip_delay = 30;
+	this->ecc.mode = NAND_ECC_SOFT;
+
+	/* Set chip enabled, but  */
+	ams_delta_latch2_write(NAND_MASK, AMS_DELTA_LATCH2_NAND_NRE |
+					  AMS_DELTA_LATCH2_NAND_NWE |
+					  AMS_DELTA_LATCH2_NAND_NCE |
+					  AMS_DELTA_LATCH2_NAND_NWP);
+
+	/* Scan to find existance of the device */
+	if (nand_scan(ams_delta_mtd, 1)) {
+		err = -ENXIO;
+		goto out_mtd;
+	}
+
+	/* Register the partitions */
+	add_mtd_partitions(ams_delta_mtd, partition_info,
+			   ARRAY_SIZE(partition_info));
+
+	goto out;
+
+ out_mtd:
+	kfree(ams_delta_mtd);
+ out:
+	return err;
+}
+
+module_init(ams_delta_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit ams_delta_cleanup(void)
+{
+	/* Release resources, unregister device */
+	nand_release(ams_delta_mtd);
+
+	/* Free the MTD device structure */
+	kfree(ams_delta_mtd);
+}
+module_exit(ams_delta_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
+MODULE_DESCRIPTION("Glue layer for NAND flash on Amstrad E3 (Delta)");

drivers/mtd/nand/au1550nd.c

@@ -14,6 +14,7 @@
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/interrupt.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
@@ -38,22 +39,21 @@
  */
 static struct mtd_info *au1550_mtd = NULL;
 static void __iomem *p_nand;
-static int nand_width = 1; /* default x8*/
+static int nand_width = 1;	/* default x8 */
+static void (*au1550_write_byte)(struct mtd_info *, u_char);
 
 /*
  * Define partitions for flash device
  */
 static const struct mtd_partition partition_info[] = {
 	{
-		.name 	= "NAND FS 0",
-	  	.offset = 0,
-	  	.size 	= 8*1024*1024
-	},
+	 .name = "NAND FS 0",
+	 .offset = 0,
+	 .size = 8 * 1024 * 1024},
 	{
-		.name 	= "NAND FS 1",
-		.offset =  MTDPART_OFS_APPEND,
- 		.size 	=    MTDPART_SIZ_FULL
-	}
+	 .name = "NAND FS 1",
+	 .offset = MTDPART_OFS_APPEND,
+	 .size = MTDPART_SIZ_FULL}
 };
 
 /**
@@ -129,21 +129,6 @@ static u16 au_read_word(struct mtd_info *mtd)
 	return ret;
 }
 
-/**
- * au_write_word -  write one word to the chip
- * @mtd:	MTD device structure
- * @word:	data word to write
- *
- *  write function for 16bit buswith without
- * endianess conversion
- */
-static void au_write_word(struct mtd_info *mtd, u16 word)
-{
-	struct nand_chip *this = mtd->priv;
-	writew(word, this->IO_ADDR_W);
-	au_sync();
-}
-
 /**
  * au_write_buf -  write buffer to chip
  * @mtd:	MTD device structure
@@ -157,7 +142,7 @@ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
 	int i;
 	struct nand_chip *this = mtd->priv;
 
-	for (i=0; i<len; i++) {
+	for (i = 0; i < len; i++) {
 		writeb(buf[i], this->IO_ADDR_W);
 		au_sync();
 	}
@@ -176,7 +161,7 @@ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 	int i;
 	struct nand_chip *this = mtd->priv;
 
-	for (i=0; i<len; i++) {
+	for (i = 0; i < len; i++) {
 		buf[i] = readb(this->IO_ADDR_R);
 		au_sync();
 	}
@@ -195,7 +180,7 @@ static int au_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
 	int i;
 	struct nand_chip *this = mtd->priv;
 
-	for (i=0; i<len; i++) {
+	for (i = 0; i < len; i++) {
 		if (buf[i] != readb(this->IO_ADDR_R))
 			return -EFAULT;
 		au_sync();
@@ -219,7 +204,7 @@ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
 	u16 *p = (u16 *) buf;
 	len >>= 1;
 
-	for (i=0; i<len; i++) {
+	for (i = 0; i < len; i++) {
 		writew(p[i], this->IO_ADDR_W);
 		au_sync();
 	}
@@ -241,7 +226,7 @@ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
 	u16 *p = (u16 *) buf;
 	len >>= 1;
 
-	for (i=0; i<len; i++) {
+	for (i = 0; i < len; i++) {
 		p[i] = readw(this->IO_ADDR_R);
 		au_sync();
 	}
@@ -262,7 +247,7 @@ static int au_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
 	u16 *p = (u16 *) buf;
 	len >>= 1;
 
-	for (i=0; i<len; i++) {
+	for (i = 0; i < len; i++) {
 		if (p[i] != readw(this->IO_ADDR_R))
 			return -EFAULT;
 		au_sync();
@@ -270,32 +255,52 @@ static int au_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
 	return 0;
 }
 
+/* Select the chip by setting nCE to low */
+#define NAND_CTL_SETNCE		1
+/* Deselect the chip by setting nCE to high */
+#define NAND_CTL_CLRNCE		2
+/* Select the command latch by setting CLE to high */
+#define NAND_CTL_SETCLE		3
+/* Deselect the command latch by setting CLE to low */
+#define NAND_CTL_CLRCLE		4
+/* Select the address latch by setting ALE to high */
+#define NAND_CTL_SETALE		5
+/* Deselect the address latch by setting ALE to low */
+#define NAND_CTL_CLRALE		6
 
 static void au1550_hwcontrol(struct mtd_info *mtd, int cmd)
 {
 	register struct nand_chip *this = mtd->priv;
 
-	switch(cmd){
+	switch (cmd) {
 
-	case NAND_CTL_SETCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_CMD; break;
-	case NAND_CTL_CLRCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_DATA; break;
+	case NAND_CTL_SETCLE:
+		this->IO_ADDR_W = p_nand + MEM_STNAND_CMD;
+		break;
+
+	case NAND_CTL_CLRCLE:
+		this->IO_ADDR_W = p_nand + MEM_STNAND_DATA;
+		break;
+
+	case NAND_CTL_SETALE:
+		this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR;
+		break;
 
-	case NAND_CTL_SETALE: this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR; break;
 	case NAND_CTL_CLRALE:
 		this->IO_ADDR_W = p_nand + MEM_STNAND_DATA;
-		/* FIXME: Nobody knows why this is neccecary,
+		/* FIXME: Nobody knows why this is necessary,
 		 * but it works only that way */
 		udelay(1);
 		break;
 
 	case NAND_CTL_SETNCE:
 		/* assert (force assert) chip enable */
-		au_writel((1<<(4+NAND_CS)) , MEM_STNDCTL); break;
+		au_writel((1 << (4 + NAND_CS)), MEM_STNDCTL);
 		break;
 
 	case NAND_CTL_CLRNCE:
- 		/* deassert chip enable */
-		au_writel(0, MEM_STNDCTL); break;
+		/* deassert chip enable */
+		au_writel(0, MEM_STNDCTL);
 		break;
 	}
 
@@ -312,69 +317,200 @@ int au1550_device_ready(struct mtd_info *mtd)
 	return ret;
 }
 
+/**
+ * au1550_select_chip - control -CE line
+ *	Forbid driving -CE manually permitting the NAND controller to do this.
+ *	Keeping -CE asserted during the whole sector reads interferes with the
+ *	NOR flash and PCMCIA drivers as it causes contention on the static bus.
+ *	We only have to hold -CE low for the NAND read commands since the flash
+ *	chip needs it to be asserted during chip not ready time but the NAND
+ *	controller keeps it released.
+ *
+ * @mtd:	MTD device structure
+ * @chip:	chipnumber to select, -1 for deselect
+ */
+static void au1550_select_chip(struct mtd_info *mtd, int chip)
+{
+}
+
+/**
+ * au1550_command - Send command to NAND device
+ * @mtd:	MTD device structure
+ * @command:	the command to be sent
+ * @column:	the column address for this command, -1 if none
+ * @page_addr:	the page address for this command, -1 if none
+ */
+static void au1550_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
+{
+	register struct nand_chip *this = mtd->priv;
+	int ce_override = 0, i;
+	ulong flags;
+
+	/* Begin command latch cycle */
+	au1550_hwcontrol(mtd, NAND_CTL_SETCLE);
+	/*
+	 * Write out the command to the device.
+	 */
+	if (command == NAND_CMD_SEQIN) {
+		int readcmd;
+
+		if (column >= mtd->writesize) {
+			/* OOB area */
+			column -= mtd->writesize;
+			readcmd = NAND_CMD_READOOB;
+		} else if (column < 256) {
+			/* First 256 bytes --> READ0 */
+			readcmd = NAND_CMD_READ0;
+		} else {
+			column -= 256;
+			readcmd = NAND_CMD_READ1;
+		}
+		au1550_write_byte(mtd, readcmd);
+	}
+	au1550_write_byte(mtd, command);
+
+	/* Set ALE and clear CLE to start address cycle */
+	au1550_hwcontrol(mtd, NAND_CTL_CLRCLE);
+
+	if (column != -1 || page_addr != -1) {
+		au1550_hwcontrol(mtd, NAND_CTL_SETALE);
+
+		/* Serially input address */
+		if (column != -1) {
+			/* Adjust columns for 16 bit buswidth */
+			if (this->options & NAND_BUSWIDTH_16)
+				column >>= 1;
+			au1550_write_byte(mtd, column);
+		}
+		if (page_addr != -1) {
+			au1550_write_byte(mtd, (u8)(page_addr & 0xff));
+
+			if (command == NAND_CMD_READ0 ||
+			    command == NAND_CMD_READ1 ||
+			    command == NAND_CMD_READOOB) {
+				/*
+				 * NAND controller will release -CE after
+				 * the last address byte is written, so we'll
+				 * have to forcibly assert it. No interrupts
+				 * are allowed while we do this as we don't
+				 * want the NOR flash or PCMCIA drivers to
+				 * steal our precious bytes of data...
+				 */
+				ce_override = 1;
+				local_irq_save(flags);
+				au1550_hwcontrol(mtd, NAND_CTL_SETNCE);
+			}
+
+			au1550_write_byte(mtd, (u8)(page_addr >> 8));
+
+			/* One more address cycle for devices > 32MiB */
+			if (this->chipsize > (32 << 20))
+				au1550_write_byte(mtd, (u8)((page_addr >> 16) & 0x0f));
+		}
+		/* Latch in address */
+		au1550_hwcontrol(mtd, NAND_CTL_CLRALE);
+	}
+
+	/*
+	 * Program and erase have their own busy handlers.
+	 * Status and sequential in need no delay.
+	 */
+	switch (command) {
+
+	case NAND_CMD_PAGEPROG:
+	case NAND_CMD_ERASE1:
+	case NAND_CMD_ERASE2:
+	case NAND_CMD_SEQIN:
+	case NAND_CMD_STATUS:
+		return;
+
+	case NAND_CMD_RESET:
+		break;
+
+	case NAND_CMD_READ0:
+	case NAND_CMD_READ1:
+	case NAND_CMD_READOOB:
+		/* Check if we're really driving -CE low (just in case) */
+		if (unlikely(!ce_override))
+			break;
+
+		/* Apply a short delay always to ensure that we do wait tWB. */
+		ndelay(100);
+		/* Wait for a chip to become ready... */
+		for (i = this->chip_delay; !this->dev_ready(mtd) && i > 0; --i)
+			udelay(1);
+
+		/* Release -CE and re-enable interrupts. */
+		au1550_hwcontrol(mtd, NAND_CTL_CLRNCE);
+		local_irq_restore(flags);
+		return;
+	}
+	/* Apply this short delay always to ensure that we do wait tWB. */
+	ndelay(100);
+
+	while(!this->dev_ready(mtd));
+}
+
+
 /*
  * Main initialization routine
  */
-int __init au1xxx_nand_init (void)
+static int __init au1xxx_nand_init(void)
 {
 	struct nand_chip *this;
-	u16 boot_swapboot = 0; /* default value */
+	u16 boot_swapboot = 0;	/* default value */
 	int retval;
 	u32 mem_staddr;
 	u32 nand_phys;
 
 	/* Allocate memory for MTD device structure and private data */
-	au1550_mtd = kmalloc (sizeof(struct mtd_info) +
-			sizeof (struct nand_chip), GFP_KERNEL);
+	au1550_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!au1550_mtd) {
-		printk ("Unable to allocate NAND MTD dev structure.\n");
+		printk("Unable to allocate NAND MTD dev structure.\n");
 		return -ENOMEM;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&au1550_mtd[1]);
+	this = (struct nand_chip *)(&au1550_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) au1550_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(au1550_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	au1550_mtd->priv = this;
+	au1550_mtd->owner = THIS_MODULE;
 
 
-	/* disable interrupts */
-	au_writel(au_readl(MEM_STNDCTL) & ~(1<<8), MEM_STNDCTL);
-
-	/* disable NAND boot */
-	au_writel(au_readl(MEM_STNDCTL) & ~(1<<0), MEM_STNDCTL);
+	/* MEM_STNDCTL: disable ints, disable nand boot */
+	au_writel(0, MEM_STNDCTL);
 
 #ifdef CONFIG_MIPS_PB1550
 	/* set gpio206 high */
-	au_writel(au_readl(GPIO2_DIR) & ~(1<<6), GPIO2_DIR);
+	au_writel(au_readl(GPIO2_DIR) & ~(1 << 6), GPIO2_DIR);
 
-	boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) |
-		((bcsr->status >> 6)  & 0x1);
+	boot_swapboot = (au_readl(MEM_STSTAT) & (0x7 << 1)) | ((bcsr->status >> 6) & 0x1);
 	switch (boot_swapboot) {
-		case 0:
-		case 2:
-		case 8:
-		case 0xC:
-		case 0xD:
-			/* x16 NAND Flash */
-			nand_width = 0;
-			break;
-		case 1:
-		case 9:
-		case 3:
-		case 0xE:
-		case 0xF:
-			/* x8 NAND Flash */
-			nand_width = 1;
-			break;
-		default:
-			printk("Pb1550 NAND: bad boot:swap\n");
-			retval = -EINVAL;
-			goto outmem;
+	case 0:
+	case 2:
+	case 8:
+	case 0xC:
+	case 0xD:
+		/* x16 NAND Flash */
+		nand_width = 0;
+		break;
+	case 1:
+	case 9:
+	case 3:
+	case 0xE:
+	case 0xF:
+		/* x8 NAND Flash */
+		nand_width = 1;
+		break;
+	default:
+		printk("Pb1550 NAND: bad boot:swap\n");
+		retval = -EINVAL;
+		goto outmem;
 	}
 #endif
 
@@ -424,21 +560,22 @@ int __init au1xxx_nand_init (void)
 
 	/* make controller and MTD agree */
 	if (NAND_CS == 0)
-		nand_width = au_readl(MEM_STCFG0) & (1<<22);
+		nand_width = au_readl(MEM_STCFG0) & (1 << 22);
 	if (NAND_CS == 1)
-		nand_width = au_readl(MEM_STCFG1) & (1<<22);
+		nand_width = au_readl(MEM_STCFG1) & (1 << 22);
 	if (NAND_CS == 2)
-		nand_width = au_readl(MEM_STCFG2) & (1<<22);
+		nand_width = au_readl(MEM_STCFG2) & (1 << 22);
 	if (NAND_CS == 3)
-		nand_width = au_readl(MEM_STCFG3) & (1<<22);
-
+		nand_width = au_readl(MEM_STCFG3) & (1 << 22);
 
 	/* Set address of hardware control function */
-	this->hwcontrol = au1550_hwcontrol;
 	this->dev_ready = au1550_device_ready;
+	this->select_chip = au1550_select_chip;
+	this->cmdfunc = au1550_command;
+
 	/* 30 us command delay time */
 	this->chip_delay = 30;
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
 	this->options = NAND_NO_AUTOINCR;
 
@@ -446,15 +583,14 @@ int __init au1xxx_nand_init (void)
 		this->options |= NAND_BUSWIDTH_16;
 
 	this->read_byte = (!nand_width) ? au_read_byte16 : au_read_byte;
-	this->write_byte = (!nand_width) ? au_write_byte16 : au_write_byte;
-	this->write_word = au_write_word;
+	au1550_write_byte = (!nand_width) ? au_write_byte16 : au_write_byte;
 	this->read_word = au_read_word;
 	this->write_buf = (!nand_width) ? au_write_buf16 : au_write_buf;
 	this->read_buf = (!nand_width) ? au_read_buf16 : au_read_buf;
 	this->verify_buf = (!nand_width) ? au_verify_buf16 : au_verify_buf;
 
 	/* Scan to find existence of the device */
-	if (nand_scan (au1550_mtd, 1)) {
+	if (nand_scan(au1550_mtd, 1)) {
 		retval = -ENXIO;
 		goto outio;
 	}
@@ -465,10 +601,10 @@ int __init au1xxx_nand_init (void)
 	return 0;
 
  outio:
-	iounmap ((void *)p_nand);
+	iounmap((void *)p_nand);
 
  outmem:
-	kfree (au1550_mtd);
+	kfree(au1550_mtd);
 	return retval;
 }
 
@@ -477,22 +613,21 @@ module_init(au1xxx_nand_init);
 /*
  * Clean up routine
  */
-#ifdef MODULE
-static void __exit au1550_cleanup (void)
+static void __exit au1550_cleanup(void)
 {
-	struct nand_chip *this = (struct nand_chip *) &au1550_mtd[1];
+	struct nand_chip *this = (struct nand_chip *)&au1550_mtd[1];
 
 	/* Release resources, unregister device */
-	nand_release (au1550_mtd);
+	nand_release(au1550_mtd);
 
 	/* Free the MTD device structure */
-	kfree (au1550_mtd);
+	kfree(au1550_mtd);
 
 	/* Unmap */
-	iounmap ((void *)p_nand);
+	iounmap((void *)p_nand);
 }
+
 module_exit(au1550_cleanup);
-#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Embedded Edge, LLC");

drivers/mtd/nand/autcpu12.c

@@ -4,7 +4,7 @@
  *  Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de>
  *
  *  Derived from drivers/mtd/spia.c
- * 	 Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
+ *	 Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
  *
  * $Id: autcpu12.c,v 1.23 2005/11/07 11:14:30 gleixner Exp $
  *
@@ -42,12 +42,7 @@
  * MTD structure for AUTCPU12 board
  */
 static struct mtd_info *autcpu12_mtd = NULL;
-
-static int autcpu12_io_base = CS89712_VIRT_BASE;
-static int autcpu12_fio_pbase = AUTCPU12_PHYS_SMC;
-static int autcpu12_fio_ctrl = AUTCPU12_SMC_SELECT_OFFSET;
-static int autcpu12_pedr = AUTCPU12_SMC_PORT_OFFSET;
-static void __iomem * autcpu12_fio_base;
+static void __iomem *autcpu12_fio_base;
 
 /*
  * Define partitions for flash devices
@@ -94,108 +89,131 @@ static struct mtd_partition partition_info128k[] = {
 #define NUM_PARTITIONS128K 2
 /*
  *	hardware specific access to control-lines
-*/
-static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd)
+ *
+ *	ALE bit 4 autcpu12_pedr
+ *	CLE bit 5 autcpu12_pedr
+ *	NCE bit 0 fio_ctrl
+ *
+ */
+static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd,
+			       unsigned int ctrl)
 {
+	struct nand_chip *chip = mtd->priv;
 
-	switch(cmd){
-
-		case NAND_CTL_SETCLE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) |=  AUTCPU12_SMC_CLE; break;
-		case NAND_CTL_CLRCLE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) &= ~AUTCPU12_SMC_CLE; break;
+	if (ctrl & NAND_CTRL_CHANGE) {
+		void __iomem *addr
+		unsigned char bits;
 
-		case NAND_CTL_SETALE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) |=  AUTCPU12_SMC_ALE; break;
-		case NAND_CTL_CLRALE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) &= ~AUTCPU12_SMC_ALE; break;
+		addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET;
+		bits = (ctrl & NAND_CLE) << 4;
+		bits |= (ctrl & NAND_ALE) << 2;
+		writeb((readb(addr) & ~0x30) | bits, addr);
 
-		case NAND_CTL_SETNCE: (*(volatile unsigned char *) (autcpu12_fio_base + autcpu12_fio_ctrl)) = 0x01; break;
-		case NAND_CTL_CLRNCE: (*(volatile unsigned char *) (autcpu12_fio_base + autcpu12_fio_ctrl)) = 0x00; break;
+		addr = autcpu12_fio_base + AUTCPU12_SMC_SELECT_OFFSET;
+		writeb((readb(addr) & ~0x1) | (ctrl & NAND_NCE), addr);
 	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
 /*
-*	read device ready pin
-*/
+ *	read device ready pin
+ */
 int autcpu12_device_ready(struct mtd_info *mtd)
 {
+	void __iomem *addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET;
 
-	return ( (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) & AUTCPU12_SMC_RDY) ? 1 : 0;
-
+	return readb(addr) & AUTCPU12_SMC_RDY;
 }
 
 /*
  * Main initialization routine
  */
-int __init autcpu12_init (void)
+static int __init autcpu12_init(void)
 {
 	struct nand_chip *this;
 	int err = 0;
 
 	/* Allocate memory for MTD device structure and private data */
-	autcpu12_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip),
-				GFP_KERNEL);
+	autcpu12_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
+			       GFP_KERNEL);
 	if (!autcpu12_mtd) {
-		printk ("Unable to allocate AUTCPU12 NAND MTD device structure.\n");
+		printk("Unable to allocate AUTCPU12 NAND MTD device structure.\n");
 		err = -ENOMEM;
 		goto out;
 	}
 
 	/* map physical adress */
-	autcpu12_fio_base = ioremap(autcpu12_fio_pbase,SZ_1K);
-	if(!autcpu12_fio_base){
+	autcpu12_fio_base = ioremap(AUTCPU12_PHYS_SMC, SZ_1K);
+	if (!autcpu12_fio_base) {
 		printk("Ioremap autcpu12 SmartMedia Card failed\n");
 		err = -EIO;
 		goto out_mtd;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&autcpu12_mtd[1]);
+	this = (struct nand_chip *)(&autcpu12_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) autcpu12_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(autcpu12_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	autcpu12_mtd->priv = this;
+	autcpu12_mtd->owner = THIS_MODULE;
 
 	/* Set address of NAND IO lines */
 	this->IO_ADDR_R = autcpu12_fio_base;
 	this->IO_ADDR_W = autcpu12_fio_base;
-	this->hwcontrol = autcpu12_hwcontrol;
+	this->cmd_ctrl = autcpu12_hwcontrol;
 	this->dev_ready = autcpu12_device_ready;
 	/* 20 us command delay time */
 	this->chip_delay = 20;
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
 	/* Enable the following for a flash based bad block table */
 	/*
-	this->options = NAND_USE_FLASH_BBT;
-	*/
+	   this->options = NAND_USE_FLASH_BBT;
+	 */
 	this->options = NAND_USE_FLASH_BBT;
 
 	/* Scan to find existance of the device */
-	if (nand_scan (autcpu12_mtd, 1)) {
+	if (nand_scan(autcpu12_mtd, 1)) {
 		err = -ENXIO;
 		goto out_ior;
 	}
 
 	/* Register the partitions */
-	switch(autcpu12_mtd->size){
-		case SZ_16M: add_mtd_partitions(autcpu12_mtd, partition_info16k, NUM_PARTITIONS16K); break;
-		case SZ_32M: add_mtd_partitions(autcpu12_mtd, partition_info32k, NUM_PARTITIONS32K); break;
-		case SZ_64M: add_mtd_partitions(autcpu12_mtd, partition_info64k, NUM_PARTITIONS64K); break;
-		case SZ_128M: add_mtd_partitions(autcpu12_mtd, partition_info128k, NUM_PARTITIONS128K); break;
-		default: {
-			printk ("Unsupported SmartMedia device\n");
+	switch (autcpu12_mtd->size) {
+		case SZ_16M:
+			add_mtd_partitions(autcpu12_mtd, partition_info16k,
+					   NUM_PARTITIONS16K);
+			break;
+		case SZ_32M:
+			add_mtd_partitions(autcpu12_mtd, partition_info32k,
+					   NUM_PARTITIONS32K);
+			break;
+		case SZ_64M:
+			add_mtd_partitions(autcpu12_mtd, partition_info64k,
+					   NUM_PARTITIONS64K);
+			break;
+		case SZ_128M:
+			add_mtd_partitions(autcpu12_mtd, partition_info128k,
+					   NUM_PARTITIONS128K);
+			break;
+		default:
+			printk("Unsupported SmartMedia device\n");
 			err = -ENXIO;
 			goto out_ior;
-		}
 	}
 	goto out;
 
-out_ior:
-	iounmap((void *)autcpu12_fio_base);
-out_mtd:
-	kfree (autcpu12_mtd);
-out:
+ out_ior:
+	iounmap(autcpu12_fio_base);
+ out_mtd:
+	kfree(autcpu12_mtd);
+ out:
 	return err;
 }
 
@@ -204,20 +222,19 @@ module_init(autcpu12_init);
 /*
  * Clean up routine
  */
-#ifdef MODULE
-static void __exit autcpu12_cleanup (void)
+static void __exit autcpu12_cleanup(void)
 {
 	/* Release resources, unregister device */
-	nand_release (autcpu12_mtd);
+	nand_release(autcpu12_mtd);
 
 	/* unmap physical adress */
-	iounmap((void *)autcpu12_fio_base);
+	iounmap(autcpu12_fio_base);
 
 	/* Free the MTD device structure */
-	kfree (autcpu12_mtd);
+	kfree(autcpu12_mtd);
 }
+
 module_exit(autcpu12_cleanup);
-#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");

drivers/mtd/nand/cs553x_nand.c

@@ -0,0 +1,353 @@
+/*
+ * drivers/mtd/nand/cs553x_nand.c
+ *
+ * (C) 2005, 2006 Red Hat Inc.
+ *
+ * Author: David Woodhouse <dwmw2@infradead.org>
+ *	   Tom Sylla <tom.sylla@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Overview:
+ *   This is a device driver for the NAND flash controller found on 
+ *   the AMD CS5535/CS5536 companion chipsets for the Geode processor.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/msr.h>
+#include <asm/io.h>
+
+#define NR_CS553X_CONTROLLERS	4
+
+#define MSR_DIVIL_GLD_CAP	0x51400000	/* DIVIL capabilitiies */
+#define CAP_CS5535		0x2df000ULL
+#define CAP_CS5536		0x5df500ULL
+
+/* NAND Timing MSRs */
+#define MSR_NANDF_DATA		0x5140001b	/* NAND Flash Data Timing MSR */
+#define MSR_NANDF_CTL		0x5140001c	/* NAND Flash Control Timing */
+#define MSR_NANDF_RSVD		0x5140001d	/* Reserved */
+
+/* NAND BAR MSRs */
+#define MSR_DIVIL_LBAR_FLSH0	0x51400010	/* Flash Chip Select 0 */
+#define MSR_DIVIL_LBAR_FLSH1	0x51400011	/* Flash Chip Select 1 */
+#define MSR_DIVIL_LBAR_FLSH2	0x51400012	/* Flash Chip Select 2 */
+#define MSR_DIVIL_LBAR_FLSH3	0x51400013	/* Flash Chip Select 3 */
+	/* Each made up of... */
+#define FLSH_LBAR_EN		(1ULL<<32)
+#define FLSH_NOR_NAND		(1ULL<<33)	/* 1 for NAND */
+#define FLSH_MEM_IO		(1ULL<<34)	/* 1 for MMIO */
+	/* I/O BARs have BASE_ADDR in bits 15:4, IO_MASK in 47:36 */
+	/* MMIO BARs have BASE_ADDR in bits 31:12, MEM_MASK in 63:44 */
+
+/* Pin function selection MSR (IDE vs. flash on the IDE pins) */
+#define MSR_DIVIL_BALL_OPTS	0x51400015
+#define PIN_OPT_IDE		(1<<0)	/* 0 for flash, 1 for IDE */
+
+/* Registers within the NAND flash controller BAR -- memory mapped */
+#define MM_NAND_DATA		0x00	/* 0 to 0x7ff, in fact */
+#define MM_NAND_CTL		0x800	/* Any even address 0x800-0x80e */
+#define MM_NAND_IO		0x801	/* Any odd address 0x801-0x80f */
+#define MM_NAND_STS		0x810
+#define MM_NAND_ECC_LSB		0x811
+#define MM_NAND_ECC_MSB		0x812
+#define MM_NAND_ECC_COL		0x813
+#define MM_NAND_LAC		0x814
+#define MM_NAND_ECC_CTL		0x815
+
+/* Registers within the NAND flash controller BAR -- I/O mapped */
+#define IO_NAND_DATA		0x00	/* 0 to 3, in fact */
+#define IO_NAND_CTL		0x04
+#define IO_NAND_IO		0x05
+#define IO_NAND_STS		0x06
+#define IO_NAND_ECC_CTL		0x08
+#define IO_NAND_ECC_LSB		0x09
+#define IO_NAND_ECC_MSB		0x0a
+#define IO_NAND_ECC_COL		0x0b
+#define IO_NAND_LAC		0x0c
+
+#define CS_NAND_CTL_DIST_EN	(1<<4)	/* Enable NAND Distract interrupt */
+#define CS_NAND_CTL_RDY_INT_MASK	(1<<3)	/* Enable RDY/BUSY# interrupt */
+#define CS_NAND_CTL_ALE		(1<<2)
+#define CS_NAND_CTL_CLE		(1<<1)
+#define CS_NAND_CTL_CE		(1<<0)	/* Keep low; 1 to reset */
+
+#define CS_NAND_STS_FLASH_RDY	(1<<3)
+#define CS_NAND_CTLR_BUSY	(1<<2)
+#define CS_NAND_CMD_COMP	(1<<1)
+#define CS_NAND_DIST_ST		(1<<0)
+
+#define CS_NAND_ECC_PARITY	(1<<2)
+#define CS_NAND_ECC_CLRECC	(1<<1)
+#define CS_NAND_ECC_ENECC	(1<<0)
+
+static void cs553x_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+{
+	struct nand_chip *this = mtd->priv;
+
+	while (unlikely(len > 0x800)) {
+		memcpy_fromio(buf, this->IO_ADDR_R, 0x800);
+		buf += 0x800;
+		len -= 0x800;
+	}
+	memcpy_fromio(buf, this->IO_ADDR_R, len);
+}
+
+static void cs553x_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
+{
+	struct nand_chip *this = mtd->priv;
+
+	while (unlikely(len > 0x800)) {
+		memcpy_toio(this->IO_ADDR_R, buf, 0x800);
+		buf += 0x800;
+		len -= 0x800;
+	}
+	memcpy_toio(this->IO_ADDR_R, buf, len);
+}
+
+static unsigned char cs553x_read_byte(struct mtd_info *mtd)
+{
+	struct nand_chip *this = mtd->priv;
+	return readb(this->IO_ADDR_R);
+}
+
+static void cs553x_write_byte(struct mtd_info *mtd, u_char byte)
+{
+	struct nand_chip *this = mtd->priv;
+	int i = 100000;
+
+	while (i && readb(this->IO_ADDR_R + MM_NAND_STS) & CS_NAND_CTLR_BUSY) {
+		udelay(1);
+		i--;
+	}
+	writeb(byte, this->IO_ADDR_W + 0x801);
+}
+
+static void cs553x_hwcontrol(struct mtd_info *mtd, int cmd,
+			     unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+	void __iomem *mmio_base = this->IO_ADDR_R;
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned char ctl = (ctrl & ~NAND_CTRL_CHANGE ) ^ 0x01;
+		writeb(ctl, mmio_base + MM_NAND_CTL);
+	}
+	if (cmd != NAND_CMD_NONE)
+		cs553x_write_byte(mtd, cmd);
+}
+
+static int cs553x_device_ready(struct mtd_info *mtd)
+{
+	struct nand_chip *this = mtd->priv;
+	void __iomem *mmio_base = this->IO_ADDR_R;
+	unsigned char foo = readb(mmio_base + MM_NAND_STS);
+
+	return (foo & CS_NAND_STS_FLASH_RDY) && !(foo & CS_NAND_CTLR_BUSY);
+}
+
+static void cs_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+	struct nand_chip *this = mtd->priv;
+	void __iomem *mmio_base = this->IO_ADDR_R;
+
+	writeb(0x07, mmio_base + MM_NAND_ECC_CTL);
+}
+
+static int cs_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
+{
+	uint32_t ecc;
+	struct nand_chip *this = mtd->priv;
+	void __iomem *mmio_base = this->IO_ADDR_R;
+
+	ecc = readl(mmio_base + MM_NAND_STS);
+
+	ecc_code[1] = ecc >> 8;
+	ecc_code[0] = ecc >> 16;
+	ecc_code[2] = ecc >> 24;
+	return 0;
+}
+
+static struct mtd_info *cs553x_mtd[4];
+
+static int __init cs553x_init_one(int cs, int mmio, unsigned long adr)
+{
+	int err = 0;
+	struct nand_chip *this;
+	struct mtd_info *new_mtd;
+
+	printk(KERN_NOTICE "Probing CS553x NAND controller CS#%d at %sIO 0x%08lx\n", cs, mmio?"MM":"P", adr);
+
+	if (!mmio) {
+		printk(KERN_NOTICE "PIO mode not yet implemented for CS553X NAND controller\n");
+		return -ENXIO;
+	}
+
+	/* Allocate memory for MTD device structure and private data */
+	new_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
+	if (!new_mtd) {
+		printk(KERN_WARNING "Unable to allocate CS553X NAND MTD device structure.\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	/* Get pointer to private data */
+	this = (struct nand_chip *)(&new_mtd[1]);
+
+	/* Initialize structures */
+	memset(new_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
+
+	/* Link the private data with the MTD structure */
+	new_mtd->priv = this;
+	new_mtd->owner = THIS_MODULE;
+
+	/* map physical address */
+	this->IO_ADDR_R = this->IO_ADDR_W = ioremap(adr, 4096);
+	if (!this->IO_ADDR_R) {
+		printk(KERN_WARNING "ioremap cs553x NAND @0x%08lx failed\n", adr);
+		err = -EIO;
+		goto out_mtd;
+	}
+
+	this->cmd_ctrl = cs553x_hwcontrol;
+	this->dev_ready = cs553x_device_ready;
+	this->read_byte = cs553x_read_byte;
+	this->read_buf = cs553x_read_buf;
+	this->write_buf = cs553x_write_buf;
+
+	this->chip_delay = 0;
+
+	this->ecc.mode = NAND_ECC_HW;
+	this->ecc.size = 256;
+	this->ecc.bytes = 3;
+	this->ecc.hwctl  = cs_enable_hwecc;
+	this->ecc.calculate = cs_calculate_ecc;
+	this->ecc.correct  = nand_correct_data;
+
+	/* Enable the following for a flash based bad block table */
+	this->options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR;
+
+	/* Scan to find existance of the device */
+	if (nand_scan(new_mtd, 1)) {
+		err = -ENXIO;
+		goto out_ior;
+	}
+
+	cs553x_mtd[cs] = new_mtd;
+	goto out;
+
+out_ior:
+	iounmap((void *)this->IO_ADDR_R);
+out_mtd:
+	kfree(new_mtd);
+out:
+	return err;
+}
+
+static int is_geode(void)
+{
+	/* These are the CPUs which will have a CS553[56] companion chip */
+	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
+	    boot_cpu_data.x86 == 5 &&
+	    boot_cpu_data.x86_model == 10)
+		return 1; /* Geode LX */
+
+	if ((boot_cpu_data.x86_vendor == X86_VENDOR_NSC ||
+	     boot_cpu_data.x86_vendor == X86_VENDOR_CYRIX) &&
+	    boot_cpu_data.x86 == 5 &&
+	    boot_cpu_data.x86_model == 5)
+		return 1; /* Geode GX (née GX2) */
+
+	return 0;
+}
+
+static int __init cs553x_init(void)
+{
+	int err = -ENXIO;
+	int i;
+	uint64_t val;
+
+	/* If the CPU isn't a Geode GX or LX, abort */
+	if (!is_geode())
+		return -ENXIO;
+
+	/* If it doesn't have the CS553[56], abort */
+	rdmsrl(MSR_DIVIL_GLD_CAP, val);
+	val &= ~0xFFULL;
+	if (val != CAP_CS5535 && val != CAP_CS5536)
+		return -ENXIO;
+
+	/* If it doesn't have the NAND controller enabled, abort */
+	rdmsrl(MSR_DIVIL_BALL_OPTS, val);
+	if (val & 1) {
+		printk(KERN_INFO "CS553x NAND controller: Flash I/O not enabled in MSR_DIVIL_BALL_OPTS.\n");
+		return -ENXIO;
+	}
+
+	for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
+		rdmsrl(MSR_DIVIL_LBAR_FLSH0 + i, val);
+
+		if ((val & (FLSH_LBAR_EN|FLSH_NOR_NAND)) == (FLSH_LBAR_EN|FLSH_NOR_NAND))
+			err = cs553x_init_one(i, !!(val & FLSH_MEM_IO), val & 0xFFFFFFFF);
+	}
+
+	/* Register all devices together here. This means we can easily hack it to 
+	   do mtdconcat etc. if we want to. */
+	for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
+		if (cs553x_mtd[i]) {
+			add_mtd_device(cs553x_mtd[i]);
+
+			/* If any devices registered, return success. Else the last error. */
+			err = 0;
+		}
+	}
+
+	return err;
+}
+
+module_init(cs553x_init);
+
+static void __exit cs553x_cleanup(void)
+{
+	int i;
+
+	for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
+		struct mtd_info *mtd = cs553x_mtd[i];
+		struct nand_chip *this;
+		void __iomem *mmio_base;
+
+		if (!mtd)
+			break;
+
+		this = cs553x_mtd[i]->priv;
+		mmio_base = this->IO_ADDR_R;
+
+		/* Release resources, unregister device */
+		nand_release(cs553x_mtd[i]);
+		cs553x_mtd[i] = NULL;
+
+		/* unmap physical adress */
+		iounmap(mmio_base);
+
+		/* Free the MTD device structure */
+		kfree(mtd);
+	}
+}
+
+module_exit(cs553x_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("NAND controller driver for AMD CS5535/CS5536 companion chip");

drivers/mtd/nand/diskonchip.c

@@ -58,10 +58,10 @@ static unsigned long __initdata doc_locations[] = {
 	0xe4000000,
 #elif defined(CONFIG_MOMENCO_OCELOT)
 	0x2f000000,
-        0xff000000,
+	0xff000000,
 #elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C)
-        0xff000000,
-##else
+	0xff000000,
+#else
 #warning Unknown architecture for DiskOnChip. No default probe locations defined
 #endif
 	0xffffffff };
@@ -73,7 +73,7 @@ struct doc_priv {
 	unsigned long physadr;
 	u_char ChipID;
 	u_char CDSNControl;
-	int chips_per_floor; /* The number of chips detected on each floor */
+	int chips_per_floor;	/* The number of chips detected on each floor */
 	int curfloor;
 	int curchip;
 	int mh0_page;
@@ -84,6 +84,7 @@ struct doc_priv {
 /* This is the syndrome computed by the HW ecc generator upon reading an empty
    page, one with all 0xff for data and stored ecc code. */
 static u_char empty_read_syndrome[6] = { 0x26, 0xff, 0x6d, 0x47, 0x73, 0x7a };
+
 /* This is the ecc value computed by the HW ecc generator upon writing an empty
    page, one with all 0xff for data. */
 static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 };
@@ -94,28 +95,29 @@ static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 };
 #define DoC_is_Millennium(doc) ((doc)->ChipID == DOC_ChipID_DocMil)
 #define DoC_is_2000(doc) ((doc)->ChipID == DOC_ChipID_Doc2k)
 
-static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd);
+static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd,
+			      unsigned int bitmask);
 static void doc200x_select_chip(struct mtd_info *mtd, int chip);
 
-static int debug=0;
+static int debug = 0;
 module_param(debug, int, 0);
 
-static int try_dword=1;
+static int try_dword = 1;
 module_param(try_dword, int, 0);
 
-static int no_ecc_failures=0;
+static int no_ecc_failures = 0;
 module_param(no_ecc_failures, int, 0);
 
-static int no_autopart=0;
+static int no_autopart = 0;
 module_param(no_autopart, int, 0);
 
-static int show_firmware_partition=0;
+static int show_firmware_partition = 0;
 module_param(show_firmware_partition, int, 0);
 
 #ifdef MTD_NAND_DISKONCHIP_BBTWRITE
-static int inftl_bbt_write=1;
+static int inftl_bbt_write = 1;
 #else
-static int inftl_bbt_write=0;
+static int inftl_bbt_write = 0;
 #endif
 module_param(inftl_bbt_write, int, 0);
 
@@ -123,7 +125,6 @@ static unsigned long doc_config_location = CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDR
 module_param(doc_config_location, ulong, 0);
 MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe for DiskOnChip");
 
-
 /* Sector size for HW ECC */
 #define SECTOR_SIZE 512
 /* The sector bytes are packed into NB_DATA 10 bit words */
@@ -147,7 +148,7 @@ static struct rs_control *rs_decoder;
  * some comments, improved a minor bit and converted it to make use
  * of the generic Reed-Solomon libary. tglx
  */
-static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
+static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc)
 {
 	int i, j, nerr, errpos[8];
 	uint8_t parity;
@@ -168,18 +169,18 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
 	 *  s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0]
 	 *  where x = alpha^(FCR + i)
 	 */
-	for(j = 1; j < NROOTS; j++) {
-		if(ds[j] == 0)
+	for (j = 1; j < NROOTS; j++) {
+		if (ds[j] == 0)
 			continue;
 		tmp = rs->index_of[ds[j]];
-		for(i = 0; i < NROOTS; i++)
+		for (i = 0; i < NROOTS; i++)
 			s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)];
 	}
 
 	/* Calc s[i] = s[i] / alpha^(v + i) */
 	for (i = 0; i < NROOTS; i++) {
 		if (syn[i])
- 			syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i));
+			syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i));
 	}
 	/* Call the decoder library */
 	nerr = decode_rs16(rs, NULL, NULL, 1019, syn, 0, errpos, 0, errval);
@@ -193,7 +194,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
 	 * but they are given by the design of the de/encoder circuit
 	 * in the DoC ASIC's.
 	 */
-	for(i = 0;i < nerr; i++) {
+	for (i = 0; i < nerr; i++) {
 		int index, bitpos, pos = 1015 - errpos[i];
 		uint8_t val;
 		if (pos >= NB_DATA && pos < 1019)
@@ -205,8 +206,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
 			   can be modified since pos is even */
 			index = (pos >> 3) ^ 1;
 			bitpos = pos & 7;
-			if ((index >= 0 && index < SECTOR_SIZE) ||
-			    index == (SECTOR_SIZE + 1)) {
+			if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) {
 				val = (uint8_t) (errval[i] >> (2 + bitpos));
 				parity ^= val;
 				if (index < SECTOR_SIZE)
@@ -216,9 +216,8 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
 			bitpos = (bitpos + 10) & 7;
 			if (bitpos == 0)
 				bitpos = 8;
-			if ((index >= 0 && index < SECTOR_SIZE) ||
-			    index == (SECTOR_SIZE + 1)) {
-				val = (uint8_t)(errval[i] << (8 - bitpos));
+			if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) {
+				val = (uint8_t) (errval[i] << (8 - bitpos));
 				parity ^= val;
 				if (index < SECTOR_SIZE)
 					data[index] ^= val;
@@ -250,10 +249,11 @@ static void DoC_Delay(struct doc_priv *doc, unsigned short cycles)
 /* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */
 static int _DoC_WaitReady(struct doc_priv *doc)
 {
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	unsigned long timeo = jiffies + (HZ * 10);
 
-	if(debug) printk("_DoC_WaitReady...\n");
+	if (debug)
+		printk("_DoC_WaitReady...\n");
 	/* Out-of-line routine to wait for chip response */
 	if (DoC_is_MillenniumPlus(doc)) {
 		while ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
@@ -280,7 +280,7 @@ static int _DoC_WaitReady(struct doc_priv *doc)
 
 static inline int DoC_WaitReady(struct doc_priv *doc)
 {
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int ret = 0;
 
 	if (DoC_is_MillenniumPlus(doc)) {
@@ -298,7 +298,8 @@ static inline int DoC_WaitReady(struct doc_priv *doc)
 		DoC_Delay(doc, 2);
 	}
 
-	if(debug) printk("DoC_WaitReady OK\n");
+	if (debug)
+		printk("DoC_WaitReady OK\n");
 	return ret;
 }
 
@@ -306,9 +307,10 @@ static void doc2000_write_byte(struct mtd_info *mtd, u_char datum)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
-	if(debug)printk("write_byte %02x\n", datum);
+	if (debug)
+		printk("write_byte %02x\n", datum);
 	WriteDOC(datum, docptr, CDSNSlowIO);
 	WriteDOC(datum, docptr, 2k_CDSN_IO);
 }
@@ -317,77 +319,78 @@ static u_char doc2000_read_byte(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	u_char ret;
 
 	ReadDOC(docptr, CDSNSlowIO);
 	DoC_Delay(doc, 2);
 	ret = ReadDOC(docptr, 2k_CDSN_IO);
-	if (debug) printk("read_byte returns %02x\n", ret);
+	if (debug)
+		printk("read_byte returns %02x\n", ret);
 	return ret;
 }
 
-static void doc2000_writebuf(struct mtd_info *mtd,
-			     const u_char *buf, int len)
+static void doc2000_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
-	if (debug)printk("writebuf of %d bytes: ", len);
-	for (i=0; i < len; i++) {
+	if (debug)
+		printk("writebuf of %d bytes: ", len);
+	for (i = 0; i < len; i++) {
 		WriteDOC_(buf[i], docptr, DoC_2k_CDSN_IO + i);
 		if (debug && i < 16)
 			printk("%02x ", buf[i]);
 	}
-	if (debug) printk("\n");
+	if (debug)
+		printk("\n");
 }
 
-static void doc2000_readbuf(struct mtd_info *mtd,
-			    u_char *buf, int len)
+static void doc2000_readbuf(struct mtd_info *mtd, u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
- 	int i;
+	void __iomem *docptr = doc->virtadr;
+	int i;
 
-	if (debug)printk("readbuf of %d bytes: ", len);
+	if (debug)
+		printk("readbuf of %d bytes: ", len);
 
-	for (i=0; i < len; i++) {
+	for (i = 0; i < len; i++) {
 		buf[i] = ReadDOC(docptr, 2k_CDSN_IO + i);
 	}
 }
 
-static void doc2000_readbuf_dword(struct mtd_info *mtd,
-			    u_char *buf, int len)
+static void doc2000_readbuf_dword(struct mtd_info *mtd, u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
- 	int i;
+	void __iomem *docptr = doc->virtadr;
+	int i;
 
-	if (debug) printk("readbuf_dword of %d bytes: ", len);
+	if (debug)
+		printk("readbuf_dword of %d bytes: ", len);
 
-	if (unlikely((((unsigned long)buf)|len) & 3)) {
-		for (i=0; i < len; i++) {
-			*(uint8_t *)(&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i);
+	if (unlikely((((unsigned long)buf) | len) & 3)) {
+		for (i = 0; i < len; i++) {
+			*(uint8_t *) (&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i);
 		}
 	} else {
-		for (i=0; i < len; i+=4) {
-			*(uint32_t*)(&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i);
+		for (i = 0; i < len; i += 4) {
+			*(uint32_t *) (&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i);
 		}
 	}
 }
 
-static int doc2000_verifybuf(struct mtd_info *mtd,
-			      const u_char *buf, int len)
+static int doc2000_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
-	for (i=0; i < len; i++)
+	for (i = 0; i < len; i++)
 		if (buf[i] != ReadDOC(docptr, 2k_CDSN_IO))
 			return -EFAULT;
 	return 0;
@@ -400,12 +403,10 @@ static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr)
 	uint16_t ret;
 
 	doc200x_select_chip(mtd, nr);
-	doc200x_hwcontrol(mtd, NAND_CTL_SETCLE);
-	this->write_byte(mtd, NAND_CMD_READID);
-	doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE);
-	doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
-	this->write_byte(mtd, 0);
-	doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
+	doc200x_hwcontrol(mtd, NAND_CMD_READID,
+			  NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+	doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
+	doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
 	/* We cant' use dev_ready here, but at least we wait for the
 	 * command to complete
@@ -423,12 +424,11 @@ static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr)
 		} ident;
 		void __iomem *docptr = doc->virtadr;
 
-		doc200x_hwcontrol(mtd, NAND_CTL_SETCLE);
-		doc2000_write_byte(mtd, NAND_CMD_READID);
-		doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE);
-		doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
-		doc2000_write_byte(mtd, 0);
-		doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
+		doc200x_hwcontrol(mtd, NAND_CMD_READID,
+				  NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+		doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
+		doc200x_hwcontrol(mtd, NAND_CMD_NONE,
+				  NAND_NCE | NAND_CTRL_CHANGE);
 
 		udelay(50);
 
@@ -464,7 +464,7 @@ static void __init doc2000_count_chips(struct mtd_info *mtd)
 	printk(KERN_DEBUG "Detected %d chips per floor.\n", i);
 }
 
-static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
+static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this)
 {
 	struct doc_priv *doc = this->priv;
 
@@ -482,7 +482,7 @@ static void doc2001_write_byte(struct mtd_info *mtd, u_char datum)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
 	WriteDOC(datum, docptr, CDSNSlowIO);
 	WriteDOC(datum, docptr, Mil_CDSN_IO);
@@ -493,7 +493,7 @@ static u_char doc2001_read_byte(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
 	//ReadDOC(docptr, CDSNSlowIO);
 	/* 11.4.5 -- delay twice to allow extended length cycle */
@@ -503,50 +503,47 @@ static u_char doc2001_read_byte(struct mtd_info *mtd)
 	return ReadDOC(docptr, LastDataRead);
 }
 
-static void doc2001_writebuf(struct mtd_info *mtd,
-			     const u_char *buf, int len)
+static void doc2001_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
-	for (i=0; i < len; i++)
+	for (i = 0; i < len; i++)
 		WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
 	/* Terminate write pipeline */
 	WriteDOC(0x00, docptr, WritePipeTerm);
 }
 
-static void doc2001_readbuf(struct mtd_info *mtd,
-			    u_char *buf, int len)
+static void doc2001_readbuf(struct mtd_info *mtd, u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
 	/* Start read pipeline */
 	ReadDOC(docptr, ReadPipeInit);
 
-	for (i=0; i < len-1; i++)
+	for (i = 0; i < len - 1; i++)
 		buf[i] = ReadDOC(docptr, Mil_CDSN_IO + (i & 0xff));
 
 	/* Terminate read pipeline */
 	buf[i] = ReadDOC(docptr, LastDataRead);
 }
 
-static int doc2001_verifybuf(struct mtd_info *mtd,
-			     const u_char *buf, int len)
+static int doc2001_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
 	/* Start read pipeline */
 	ReadDOC(docptr, ReadPipeInit);
 
-	for (i=0; i < len-1; i++)
+	for (i = 0; i < len - 1; i++)
 		if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
 			ReadDOC(docptr, LastDataRead);
 			return i;
@@ -560,87 +557,90 @@ static u_char doc2001plus_read_byte(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	u_char ret;
 
-        ReadDOC(docptr, Mplus_ReadPipeInit);
-        ReadDOC(docptr, Mplus_ReadPipeInit);
-        ret = ReadDOC(docptr, Mplus_LastDataRead);
-	if (debug) printk("read_byte returns %02x\n", ret);
+	ReadDOC(docptr, Mplus_ReadPipeInit);
+	ReadDOC(docptr, Mplus_ReadPipeInit);
+	ret = ReadDOC(docptr, Mplus_LastDataRead);
+	if (debug)
+		printk("read_byte returns %02x\n", ret);
 	return ret;
 }
 
-static void doc2001plus_writebuf(struct mtd_info *mtd,
-			     const u_char *buf, int len)
+static void doc2001plus_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
-	if (debug)printk("writebuf of %d bytes: ", len);
-	for (i=0; i < len; i++) {
+	if (debug)
+		printk("writebuf of %d bytes: ", len);
+	for (i = 0; i < len; i++) {
 		WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
 		if (debug && i < 16)
 			printk("%02x ", buf[i]);
 	}
-	if (debug) printk("\n");
+	if (debug)
+		printk("\n");
 }
 
-static void doc2001plus_readbuf(struct mtd_info *mtd,
-			    u_char *buf, int len)
+static void doc2001plus_readbuf(struct mtd_info *mtd, u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
-	if (debug)printk("readbuf of %d bytes: ", len);
+	if (debug)
+		printk("readbuf of %d bytes: ", len);
 
 	/* Start read pipeline */
 	ReadDOC(docptr, Mplus_ReadPipeInit);
 	ReadDOC(docptr, Mplus_ReadPipeInit);
 
-	for (i=0; i < len-2; i++) {
+	for (i = 0; i < len - 2; i++) {
 		buf[i] = ReadDOC(docptr, Mil_CDSN_IO);
 		if (debug && i < 16)
 			printk("%02x ", buf[i]);
 	}
 
 	/* Terminate read pipeline */
-	buf[len-2] = ReadDOC(docptr, Mplus_LastDataRead);
+	buf[len - 2] = ReadDOC(docptr, Mplus_LastDataRead);
 	if (debug && i < 16)
-		printk("%02x ", buf[len-2]);
-	buf[len-1] = ReadDOC(docptr, Mplus_LastDataRead);
+		printk("%02x ", buf[len - 2]);
+	buf[len - 1] = ReadDOC(docptr, Mplus_LastDataRead);
 	if (debug && i < 16)
-		printk("%02x ", buf[len-1]);
-	if (debug) printk("\n");
+		printk("%02x ", buf[len - 1]);
+	if (debug)
+		printk("\n");
 }
 
-static int doc2001plus_verifybuf(struct mtd_info *mtd,
-			     const u_char *buf, int len)
+static int doc2001plus_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 
-	if (debug)printk("verifybuf of %d bytes: ", len);
+	if (debug)
+		printk("verifybuf of %d bytes: ", len);
 
 	/* Start read pipeline */
 	ReadDOC(docptr, Mplus_ReadPipeInit);
 	ReadDOC(docptr, Mplus_ReadPipeInit);
 
-	for (i=0; i < len-2; i++)
+	for (i = 0; i < len - 2; i++)
 		if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
 			ReadDOC(docptr, Mplus_LastDataRead);
 			ReadDOC(docptr, Mplus_LastDataRead);
 			return i;
 		}
-	if (buf[len-2] != ReadDOC(docptr, Mplus_LastDataRead))
-		return len-2;
-	if (buf[len-1] != ReadDOC(docptr, Mplus_LastDataRead))
-		return len-1;
+	if (buf[len - 2] != ReadDOC(docptr, Mplus_LastDataRead))
+		return len - 2;
+	if (buf[len - 1] != ReadDOC(docptr, Mplus_LastDataRead))
+		return len - 1;
 	return 0;
 }
 
@@ -648,10 +648,11 @@ static void doc2001plus_select_chip(struct mtd_info *mtd, int chip)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int floor = 0;
 
-	if(debug)printk("select chip (%d)\n", chip);
+	if (debug)
+		printk("select chip (%d)\n", chip);
 
 	if (chip == -1) {
 		/* Disable flash internally */
@@ -660,7 +661,7 @@ static void doc2001plus_select_chip(struct mtd_info *mtd, int chip)
 	}
 
 	floor = chip / doc->chips_per_floor;
-	chip -= (floor *  doc->chips_per_floor);
+	chip -= (floor * doc->chips_per_floor);
 
 	/* Assert ChipEnable and deassert WriteProtect */
 	WriteDOC((DOC_FLASH_CE), docptr, Mplus_FlashSelect);
@@ -674,72 +675,61 @@ static void doc200x_select_chip(struct mtd_info *mtd, int chip)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int floor = 0;
 
-	if(debug)printk("select chip (%d)\n", chip);
+	if (debug)
+		printk("select chip (%d)\n", chip);
 
 	if (chip == -1)
 		return;
 
 	floor = chip / doc->chips_per_floor;
-	chip -= (floor *  doc->chips_per_floor);
+	chip -= (floor * doc->chips_per_floor);
 
 	/* 11.4.4 -- deassert CE before changing chip */
-	doc200x_hwcontrol(mtd, NAND_CTL_CLRNCE);
+	doc200x_hwcontrol(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE);
 
 	WriteDOC(floor, docptr, FloorSelect);
 	WriteDOC(chip, docptr, CDSNDeviceSelect);
 
-	doc200x_hwcontrol(mtd, NAND_CTL_SETNCE);
+	doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
 	doc->curchip = chip;
 	doc->curfloor = floor;
 }
 
-static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd)
+#define CDSN_CTRL_MSK (CDSN_CTRL_CE | CDSN_CTRL_CLE | CDSN_CTRL_ALE)
+
+static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd,
+			      unsigned int ctrl)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
-	switch(cmd) {
-	case NAND_CTL_SETNCE:
-		doc->CDSNControl |= CDSN_CTRL_CE;
-		break;
-	case NAND_CTL_CLRNCE:
-		doc->CDSNControl &= ~CDSN_CTRL_CE;
-		break;
-	case NAND_CTL_SETCLE:
-		doc->CDSNControl |= CDSN_CTRL_CLE;
-		break;
-	case NAND_CTL_CLRCLE:
-		doc->CDSNControl &= ~CDSN_CTRL_CLE;
-		break;
-	case NAND_CTL_SETALE:
-		doc->CDSNControl |= CDSN_CTRL_ALE;
-		break;
-	case NAND_CTL_CLRALE:
-		doc->CDSNControl &= ~CDSN_CTRL_ALE;
-		break;
-	case NAND_CTL_SETWP:
-		doc->CDSNControl |= CDSN_CTRL_WP;
-		break;
-	case NAND_CTL_CLRWP:
-		doc->CDSNControl &= ~CDSN_CTRL_WP;
-		break;
+	if (ctrl & NAND_CTRL_CHANGE) {
+		doc->CDSNControl &= ~CDSN_CTRL_MSK;
+		doc->CDSNControl |= ctrl & CDSN_CTRL_MSK;
+		if (debug)
+			printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl);
+		WriteDOC(doc->CDSNControl, docptr, CDSNControl);
+		/* 11.4.3 -- 4 NOPs after CSDNControl write */
+		DoC_Delay(doc, 4);
+	}
+	if (cmd != NAND_CMD_NONE) {
+		if (DoC_is_2000(doc))
+			doc2000_write_byte(mtd, cmd);
+		else
+			doc2001_write_byte(mtd, cmd);
 	}
-	if (debug)printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl);
-	WriteDOC(doc->CDSNControl, docptr, CDSNControl);
-	/* 11.4.3 -- 4 NOPs after CSDNControl write */
-	DoC_Delay(doc, 4);
 }
 
-static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
 	/*
 	 * Must terminate write pipeline before sending any commands
@@ -756,9 +746,9 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col
 	if (command == NAND_CMD_SEQIN) {
 		int readcmd;
 
-		if (column >= mtd->oobblock) {
+		if (column >= mtd->writesize) {
 			/* OOB area */
-			column -= mtd->oobblock;
+			column -= mtd->writesize;
 			readcmd = NAND_CMD_READOOB;
 		} else if (column < 256) {
 			/* First 256 bytes --> READ0 */
@@ -782,25 +772,26 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col
 			WriteDOC(column, docptr, Mplus_FlashAddress);
 		}
 		if (page_addr != -1) {
-			WriteDOC((unsigned char) (page_addr & 0xff), docptr, Mplus_FlashAddress);
-			WriteDOC((unsigned char) ((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress);
+			WriteDOC((unsigned char)(page_addr & 0xff), docptr, Mplus_FlashAddress);
+			WriteDOC((unsigned char)((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress);
 			/* One more address cycle for higher density devices */
 			if (this->chipsize & 0x0c000000) {
-				WriteDOC((unsigned char) ((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress);
+				WriteDOC((unsigned char)((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress);
 				printk("high density\n");
 			}
 		}
 		WriteDOC(0, docptr, Mplus_WritePipeTerm);
 		WriteDOC(0, docptr, Mplus_WritePipeTerm);
 		/* deassert ALE */
-		if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 || command == NAND_CMD_READOOB || command == NAND_CMD_READID)
+		if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 ||
+		    command == NAND_CMD_READOOB || command == NAND_CMD_READID)
 			WriteDOC(0, docptr, Mplus_FlashControl);
 	}
 
 	/*
 	 * program and erase have their own busy handlers
 	 * status and sequential in needs no delay
-	*/
+	 */
 	switch (command) {
 
 	case NAND_CMD_PAGEPROG:
@@ -817,55 +808,57 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col
 		WriteDOC(NAND_CMD_STATUS, docptr, Mplus_FlashCmd);
 		WriteDOC(0, docptr, Mplus_WritePipeTerm);
 		WriteDOC(0, docptr, Mplus_WritePipeTerm);
-		while ( !(this->read_byte(mtd) & 0x40));
+		while (!(this->read_byte(mtd) & 0x40)) ;
 		return;
 
-	/* This applies to read commands */
+		/* This applies to read commands */
 	default:
 		/*
 		 * If we don't have access to the busy pin, we apply the given
 		 * command delay
-		*/
+		 */
 		if (!this->dev_ready) {
-			udelay (this->chip_delay);
+			udelay(this->chip_delay);
 			return;
 		}
 	}
 
 	/* Apply this short delay always to ensure that we do wait tWB in
 	 * any case on any machine. */
-	ndelay (100);
+	ndelay(100);
 	/* wait until command is processed */
-	while (!this->dev_ready(mtd));
+	while (!this->dev_ready(mtd)) ;
 }
 
 static int doc200x_dev_ready(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
 	if (DoC_is_MillenniumPlus(doc)) {
 		/* 11.4.2 -- must NOP four times before checking FR/B# */
 		DoC_Delay(doc, 4);
 		if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
-			if(debug)
+			if (debug)
 				printk("not ready\n");
 			return 0;
 		}
-		if (debug)printk("was ready\n");
+		if (debug)
+			printk("was ready\n");
 		return 1;
 	} else {
 		/* 11.4.2 -- must NOP four times before checking FR/B# */
 		DoC_Delay(doc, 4);
 		if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
-			if(debug)
+			if (debug)
 				printk("not ready\n");
 			return 0;
 		}
 		/* 11.4.2 -- Must NOP twice if it's ready */
 		DoC_Delay(doc, 2);
-		if (debug)printk("was ready\n");
+		if (debug)
+			printk("was ready\n");
 		return 1;
 	}
 }
@@ -881,10 +874,10 @@ static void doc200x_enable_hwecc(struct mtd_info *mtd, int mode)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
 	/* Prime the ECC engine */
-	switch(mode) {
+	switch (mode) {
 	case NAND_ECC_READ:
 		WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
 		WriteDOC(DOC_ECC_EN, docptr, ECCConf);
@@ -900,10 +893,10 @@ static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 
 	/* Prime the ECC engine */
-	switch(mode) {
+	switch (mode) {
 	case NAND_ECC_READ:
 		WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
 		WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf);
@@ -916,12 +909,11 @@ static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode)
 }
 
 /* This code is only called on write */
-static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
-				 unsigned char *ecc_code)
+static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, unsigned char *ecc_code)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
 	int i;
 	int emptymatch = 1;
 
@@ -961,7 +953,8 @@ static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
 		   often.  It could be optimized away by examining the data in
 		   the writebuf routine, and remembering the result. */
 		for (i = 0; i < 512; i++) {
-			if (dat[i] == 0xff) continue;
+			if (dat[i] == 0xff)
+				continue;
 			emptymatch = 0;
 			break;
 		}
@@ -969,17 +962,20 @@ static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
 	/* If emptymatch still =1, we do have an all-0xff data buffer.
 	   Return all-0xff ecc value instead of the computed one, so
 	   it'll look just like a freshly-erased page. */
-	if (emptymatch) memset(ecc_code, 0xff, 6);
+	if (emptymatch)
+		memset(ecc_code, 0xff, 6);
 #endif
 	return 0;
 }
 
-static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
+static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat,
+				u_char *read_ecc, u_char *isnull)
 {
 	int i, ret = 0;
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
-        void __iomem *docptr = doc->virtadr;
+	void __iomem *docptr = doc->virtadr;
+	uint8_t calc_ecc[6];
 	volatile u_char dummy;
 	int emptymatch = 1;
 
@@ -1012,18 +1008,20 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_
 		   all-0xff data and stored ecc block.  Check the stored ecc. */
 		if (emptymatch) {
 			for (i = 0; i < 6; i++) {
-				if (read_ecc[i] == 0xff) continue;
+				if (read_ecc[i] == 0xff)
+					continue;
 				emptymatch = 0;
 				break;
 			}
 		}
 		/* If emptymatch still =1, check the data block. */
 		if (emptymatch) {
-		/* Note: this somewhat expensive test should not be triggered
-		   often.  It could be optimized away by examining the data in
-		   the readbuf routine, and remembering the result. */
+			/* Note: this somewhat expensive test should not be triggered
+			   often.  It could be optimized away by examining the data in
+			   the readbuf routine, and remembering the result. */
 			for (i = 0; i < 512; i++) {
-				if (dat[i] == 0xff) continue;
+				if (dat[i] == 0xff)
+					continue;
 				emptymatch = 0;
 				break;
 			}
@@ -1032,7 +1030,8 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_
 		   erased block, in which case the ECC will not come out right.
 		   We'll suppress the error and tell the caller everything's
 		   OK.  Because it is. */
-		if (!emptymatch) ret = doc_ecc_decode (rs_decoder, dat, calc_ecc);
+		if (!emptymatch)
+			ret = doc_ecc_decode(rs_decoder, dat, calc_ecc);
 		if (ret > 0)
 			printk(KERN_ERR "doc200x_correct_data corrected %d errors\n", ret);
 	}
@@ -1059,11 +1058,10 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_
  * safer.  The only problem with it is that any code that parses oobfree must
  * be able to handle out-of-order segments.
  */
-static struct nand_oobinfo doc200x_oobinfo = {
-        .useecc = MTD_NANDECC_AUTOPLACE,
-        .eccbytes = 6,
-        .eccpos = {0, 1, 2, 3, 4, 5},
-        .oobfree = { {8, 8}, {6, 2} }
+static struct nand_ecclayout doc200x_oobinfo = {
+	.eccbytes = 6,
+	.eccpos = {0, 1, 2, 3, 4, 5},
+	.oobfree = {{8, 8}, {6, 2}}
 };
 
 /* Find the (I)NFTL Media Header, and optionally also the mirror media header.
@@ -1072,8 +1070,7 @@ static struct nand_oobinfo doc200x_oobinfo = {
    either "ANAND" or "BNAND".  If findmirror=1, also look for the mirror media
    header.  The page #s of the found media headers are placed in mh0_page and
    mh1_page in the DOC private structure. */
-static int __init find_media_headers(struct mtd_info *mtd, u_char *buf,
-				     const char *id, int findmirror)
+static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const char *id, int findmirror)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
@@ -1082,17 +1079,19 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf,
 	size_t retlen;
 
 	for (offs = 0; offs < mtd->size; offs += mtd->erasesize) {
-		ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
-		if (retlen != mtd->oobblock) continue;
+		ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
+		if (retlen != mtd->writesize)
+			continue;
 		if (ret) {
-			printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n",
-				offs);
+			printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n", offs);
 		}
-		if (memcmp(buf, id, 6)) continue;
+		if (memcmp(buf, id, 6))
+			continue;
 		printk(KERN_INFO "Found DiskOnChip %s Media Header at 0x%x\n", id, offs);
 		if (doc->mh0_page == -1) {
 			doc->mh0_page = offs >> this->page_shift;
-			if (!findmirror) return 1;
+			if (!findmirror)
+				return 1;
 			continue;
 		}
 		doc->mh1_page = offs >> this->page_shift;
@@ -1105,8 +1104,8 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf,
 	/* Only one mediaheader was found.  We want buf to contain a
 	   mediaheader on return, so we'll have to re-read the one we found. */
 	offs = doc->mh0_page << this->page_shift;
-	ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
-	if (retlen != mtd->oobblock) {
+	ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
+	if (retlen != mtd->writesize) {
 		/* Insanity.  Give up. */
 		printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n");
 		return 0;
@@ -1114,8 +1113,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf,
 	return 1;
 }
 
-static inline int __init nftl_partscan(struct mtd_info *mtd,
-				struct mtd_partition *parts)
+static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partition *parts)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
@@ -1127,13 +1125,14 @@ static inline int __init nftl_partscan(struct mtd_info *mtd,
 	unsigned blocks, maxblocks;
 	int offs, numheaders;
 
-	buf = kmalloc(mtd->oobblock, GFP_KERNEL);
+	buf = kmalloc(mtd->writesize, GFP_KERNEL);
 	if (!buf) {
 		printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
 		return 0;
 	}
-	if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) goto out;
-	mh = (struct NFTLMediaHeader *) buf;
+	if (!(numheaders = find_media_headers(mtd, buf, "ANAND", 1)))
+		goto out;
+	mh = (struct NFTLMediaHeader *)buf;
 
 	mh->NumEraseUnits = le16_to_cpu(mh->NumEraseUnits);
 	mh->FirstPhysicalEUN = le16_to_cpu(mh->FirstPhysicalEUN);
@@ -1155,8 +1154,8 @@ static inline int __init nftl_partscan(struct mtd_info *mtd,
 		/* Auto-determine UnitSizeFactor.  The constraints are:
 		   - There can be at most 32768 virtual blocks.
 		   - There can be at most (virtual block size - page size)
-		     virtual blocks (because MediaHeader+BBT must fit in 1).
-		*/
+		   virtual blocks (because MediaHeader+BBT must fit in 1).
+		 */
 		mh->UnitSizeFactor = 0xff;
 		while (blocks > maxblocks) {
 			blocks >>= 1;
@@ -1211,14 +1210,13 @@ static inline int __init nftl_partscan(struct mtd_info *mtd,
 	}
 
 	ret = numparts;
-out:
+ out:
 	kfree(buf);
 	return ret;
 }
 
 /* This is a stripped-down copy of the code in inftlmount.c */
-static inline int __init inftl_partscan(struct mtd_info *mtd,
-				 struct mtd_partition *parts)
+static inline int __init inftl_partscan(struct mtd_info *mtd, struct mtd_partition *parts)
 {
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
@@ -1235,15 +1233,16 @@ static inline int __init inftl_partscan(struct mtd_info *mtd,
 	if (inftl_bbt_write)
 		end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift);
 
-	buf = kmalloc(mtd->oobblock, GFP_KERNEL);
+	buf = kmalloc(mtd->writesize, GFP_KERNEL);
 	if (!buf) {
 		printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
 		return 0;
 	}
 
-	if (!find_media_headers(mtd, buf, "BNAND", 0)) goto out;
+	if (!find_media_headers(mtd, buf, "BNAND", 0))
+		goto out;
 	doc->mh1_page = doc->mh0_page + (4096 >> this->page_shift);
-	mh = (struct INFTLMediaHeader *) buf;
+	mh = (struct INFTLMediaHeader *)buf;
 
 	mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks);
 	mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions);
@@ -1319,8 +1318,10 @@ static inline int __init inftl_partscan(struct mtd_info *mtd,
 		parts[numparts].offset = ip->firstUnit << vshift;
 		parts[numparts].size = (1 + ip->lastUnit - ip->firstUnit) << vshift;
 		numparts++;
-		if (ip->lastUnit > lastvunit) lastvunit = ip->lastUnit;
-		if (ip->flags & INFTL_LAST) break;
+		if (ip->lastUnit > lastvunit)
+			lastvunit = ip->lastUnit;
+		if (ip->flags & INFTL_LAST)
+			break;
 	}
 	lastvunit++;
 	if ((lastvunit << vshift) < end) {
@@ -1330,7 +1331,7 @@ static inline int __init inftl_partscan(struct mtd_info *mtd,
 		numparts++;
 	}
 	ret = numparts;
-out:
+ out:
 	kfree(buf);
 	return ret;
 }
@@ -1342,11 +1343,12 @@ static int __init nftl_scan_bbt(struct mtd_info *mtd)
 	struct doc_priv *doc = this->priv;
 	struct mtd_partition parts[2];
 
-	memset((char *) parts, 0, sizeof(parts));
+	memset((char *)parts, 0, sizeof(parts));
 	/* On NFTL, we have to find the media headers before we can read the
 	   BBTs, since they're stored in the media header eraseblocks. */
 	numparts = nftl_partscan(mtd, parts);
-	if (!numparts) return -EIO;
+	if (!numparts)
+		return -EIO;
 	this->bbt_td->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT |
 				NAND_BBT_SAVECONTENT | NAND_BBT_WRITE |
 				NAND_BBT_VERSION;
@@ -1393,8 +1395,7 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd)
 		this->bbt_td->pages[0] = 2;
 		this->bbt_md = NULL;
 	} else {
-		this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT |
-					NAND_BBT_VERSION;
+		this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | NAND_BBT_VERSION;
 		if (inftl_bbt_write)
 			this->bbt_td->options |= NAND_BBT_WRITE;
 		this->bbt_td->offs = 8;
@@ -1404,8 +1405,7 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd)
 		this->bbt_td->reserved_block_code = 0x01;
 		this->bbt_td->pattern = "MSYS_BBT";
 
-		this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT |
-					NAND_BBT_VERSION;
+		this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | NAND_BBT_VERSION;
 		if (inftl_bbt_write)
 			this->bbt_md->options |= NAND_BBT_WRITE;
 		this->bbt_md->offs = 8;
@@ -1420,12 +1420,13 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd)
 	   At least as nand_bbt.c is currently written. */
 	if ((ret = nand_scan_bbt(mtd, NULL)))
 		return ret;
-	memset((char *) parts, 0, sizeof(parts));
+	memset((char *)parts, 0, sizeof(parts));
 	numparts = inftl_partscan(mtd, parts);
 	/* At least for now, require the INFTL Media Header.  We could probably
 	   do without it for non-INFTL use, since all it gives us is
 	   autopartitioning, but I want to give it more thought. */
-	if (!numparts) return -EIO;
+	if (!numparts)
+		return -EIO;
 	add_mtd_device(mtd);
 #ifdef CONFIG_MTD_PARTITIONS
 	if (!no_autopart)
@@ -1439,7 +1440,6 @@ static inline int __init doc2000_init(struct mtd_info *mtd)
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
 
-	this->write_byte = doc2000_write_byte;
 	this->read_byte = doc2000_read_byte;
 	this->write_buf = doc2000_writebuf;
 	this->read_buf = doc2000_readbuf;
@@ -1457,7 +1457,6 @@ static inline int __init doc2001_init(struct mtd_info *mtd)
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
 
-	this->write_byte = doc2001_write_byte;
 	this->read_byte = doc2001_read_byte;
 	this->write_buf = doc2001_writebuf;
 	this->read_buf = doc2001_readbuf;
@@ -1489,16 +1488,15 @@ static inline int __init doc2001plus_init(struct mtd_info *mtd)
 	struct nand_chip *this = mtd->priv;
 	struct doc_priv *doc = this->priv;
 
-	this->write_byte = NULL;
 	this->read_byte = doc2001plus_read_byte;
 	this->write_buf = doc2001plus_writebuf;
 	this->read_buf = doc2001plus_readbuf;
 	this->verify_buf = doc2001plus_verifybuf;
 	this->scan_bbt = inftl_scan_bbt;
-	this->hwcontrol = NULL;
+	this->cmd_ctrl = NULL;
 	this->select_chip = doc2001plus_select_chip;
 	this->cmdfunc = doc2001plus_command;
-	this->enable_hwecc = doc2001plus_enable_hwecc;
+	this->ecc.hwctl = doc2001plus_enable_hwecc;
 
 	doc->chips_per_floor = 1;
 	mtd->name = "DiskOnChip Millennium Plus";
@@ -1535,20 +1533,16 @@ static int __init doc_probe(unsigned long physadr)
 	save_control = ReadDOC(virtadr, DOCControl);
 
 	/* Reset the DiskOnChip ASIC */
-	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
-		 virtadr, DOCControl);
-	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
-		 virtadr, DOCControl);
+	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl);
+	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl);
 
 	/* Enable the DiskOnChip ASIC */
-	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
-		 virtadr, DOCControl);
-	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
-		 virtadr, DOCControl);
+	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl);
+	WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl);
 
 	ChipID = ReadDOC(virtadr, ChipID);
 
-	switch(ChipID) {
+	switch (ChipID) {
 	case DOC_ChipID_Doc2k:
 		reg = DoC_2k_ECCStatus;
 		break;
@@ -1564,15 +1558,13 @@ static int __init doc_probe(unsigned long physadr)
 			ReadDOC(virtadr, Mplus_Power);
 
 		/* Reset the Millennium Plus ASIC */
-		tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT |
-			DOC_MODE_BDECT;
+		tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT;
 		WriteDOC(tmp, virtadr, Mplus_DOCControl);
 		WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
 
 		mdelay(1);
 		/* Enable the Millennium Plus ASIC */
-		tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT |
-			DOC_MODE_BDECT;
+		tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT;
 		WriteDOC(tmp, virtadr, Mplus_DOCControl);
 		WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
 		mdelay(1);
@@ -1596,7 +1588,7 @@ static int __init doc_probe(unsigned long physadr)
 		goto notfound;
 	}
 	/* Check the TOGGLE bit in the ECC register */
-	tmp  = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
+	tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
 	tmpb = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
 	tmpc = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
 	if ((tmp == tmpb) || (tmp != tmpc)) {
@@ -1626,11 +1618,11 @@ static int __init doc_probe(unsigned long physadr)
 		if (ChipID == DOC_ChipID_DocMilPlus16) {
 			WriteDOC(~newval, virtadr, Mplus_AliasResolution);
 			oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution);
-			WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it
+			WriteDOC(newval, virtadr, Mplus_AliasResolution);	// restore it
 		} else {
 			WriteDOC(~newval, virtadr, AliasResolution);
 			oldval = ReadDOC(doc->virtadr, AliasResolution);
-			WriteDOC(newval, virtadr, AliasResolution); // restore it
+			WriteDOC(newval, virtadr, AliasResolution);	// restore it
 		}
 		newval = ~newval;
 		if (oldval == newval) {
@@ -1642,10 +1634,8 @@ static int __init doc_probe(unsigned long physadr)
 	printk(KERN_NOTICE "DiskOnChip found at 0x%lx\n", physadr);
 
 	len = sizeof(struct mtd_info) +
-	      sizeof(struct nand_chip) +
-	      sizeof(struct doc_priv) +
-	      (2 * sizeof(struct nand_bbt_descr));
-	mtd =  kmalloc(len, GFP_KERNEL);
+	    sizeof(struct nand_chip) + sizeof(struct doc_priv) + (2 * sizeof(struct nand_bbt_descr));
+	mtd = kmalloc(len, GFP_KERNEL);
 	if (!mtd) {
 		printk(KERN_ERR "DiskOnChip kmalloc (%d bytes) failed!\n", len);
 		ret = -ENOMEM;
@@ -1663,17 +1653,19 @@ static int __init doc_probe(unsigned long physadr)
 
 	nand->priv		= doc;
 	nand->select_chip	= doc200x_select_chip;
-	nand->hwcontrol		= doc200x_hwcontrol;
+	nand->cmd_ctrl		= doc200x_hwcontrol;
 	nand->dev_ready		= doc200x_dev_ready;
 	nand->waitfunc		= doc200x_wait;
 	nand->block_bad		= doc200x_block_bad;
-	nand->enable_hwecc	= doc200x_enable_hwecc;
-	nand->calculate_ecc	= doc200x_calculate_ecc;
-	nand->correct_data	= doc200x_correct_data;
+	nand->ecc.hwctl		= doc200x_enable_hwecc;
+	nand->ecc.calculate	= doc200x_calculate_ecc;
+	nand->ecc.correct	= doc200x_correct_data;
 
-	nand->autooob		= &doc200x_oobinfo;
-	nand->eccmode		= NAND_ECC_HW6_512;
-	nand->options		= NAND_USE_FLASH_BBT | NAND_HWECC_SYNDROME;
+	nand->ecc.layout	= &doc200x_oobinfo;
+	nand->ecc.mode		= NAND_ECC_HW_SYNDROME;
+	nand->ecc.size		= 512;
+	nand->ecc.bytes		= 6;
+	nand->options		= NAND_USE_FLASH_BBT;
 
 	doc->physadr		= physadr;
 	doc->virtadr		= virtadr;
@@ -1707,18 +1699,18 @@ static int __init doc_probe(unsigned long physadr)
 	doclist = mtd;
 	return 0;
 
-notfound:
+ notfound:
 	/* Put back the contents of the DOCControl register, in case it's not
 	   actually a DiskOnChip.  */
 	WriteDOC(save_control, virtadr, DOCControl);
-fail:
+ fail:
 	iounmap(virtadr);
 	return ret;
 }
 
 static void release_nanddoc(void)
 {
- 	struct mtd_info *mtd, *nextmtd;
+	struct mtd_info *mtd, *nextmtd;
 	struct nand_chip *nand;
 	struct doc_priv *doc;
 
@@ -1747,8 +1739,8 @@ static int __init init_nanddoc(void)
 	 * generator polinomial degree = 4
 	 */
 	rs_decoder = init_rs(10, 0x409, FCR, 1, NROOTS);
- 	if (!rs_decoder) {
-		printk (KERN_ERR "DiskOnChip: Could not create a RS decoder\n");
+	if (!rs_decoder) {
+		printk(KERN_ERR "DiskOnChip: Could not create a RS decoder\n");
 		return -ENOMEM;
 	}
 
@@ -1758,7 +1750,7 @@ static int __init init_nanddoc(void)
 		if (ret < 0)
 			goto outerr;
 	} else {
-		for (i=0; (doc_locations[i] != 0xffffffff); i++) {
+		for (i = 0; (doc_locations[i] != 0xffffffff); i++) {
 			doc_probe(doc_locations[i]);
 		}
 	}
@@ -1770,7 +1762,7 @@ static int __init init_nanddoc(void)
 		goto outerr;
 	}
 	return 0;
-outerr:
+ outerr:
 	free_rs(rs_decoder);
 	return ret;
 }

drivers/mtd/nand/edb7312.c

@@ -1,7 +1,7 @@
 /*
  *  drivers/mtd/nand/edb7312.c
  *
- *  Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
+ *  Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
  *
  *  Derived from drivers/mtd/nand/autcpu12.c
  *       Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
@@ -25,7 +25,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
 #include <asm/io.h>
-#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */
+#include <asm/arch/hardware.h>	/* for CLPS7111_VIRT_BASE */
 #include <asm/sizes.h>
 #include <asm/hardware/clps7111.h>
 
@@ -54,51 +54,45 @@ static struct mtd_info *ep7312_mtd = NULL;
  */
 
 static unsigned long ep7312_fio_pbase = EP7312_FIO_PBASE;
-static void __iomem * ep7312_pxdr = (void __iomem *) EP7312_PXDR;
-static void __iomem * ep7312_pxddr = (void __iomem *) EP7312_PXDDR;
+static void __iomem *ep7312_pxdr = (void __iomem *)EP7312_PXDR;
+static void __iomem *ep7312_pxddr = (void __iomem *)EP7312_PXDDR;
 
 #ifdef CONFIG_MTD_PARTITIONS
 /*
  * Define static partitions for flash device
  */
 static struct mtd_partition partition_info[] = {
-	{ .name = "EP7312 Nand Flash",
-		  .offset = 0,
-		  .size = 8*1024*1024 }
+	{.name = "EP7312 Nand Flash",
+	 .offset = 0,
+	 .size = 8 * 1024 * 1024}
 };
+
 #define NUM_PARTITIONS 1
 
 #endif
 
-
 /*
  *	hardware specific access to control-lines
+ *
+ *	NAND_NCE: bit 0 -> bit 7
+ *	NAND_CLE: bit 1 -> bit 4
+ *	NAND_ALE: bit 2 -> bit 5
  */
-static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd)
+static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
 {
-	switch(cmd) {
-
-	case NAND_CTL_SETCLE:
-		clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr);
-		break;
-	case NAND_CTL_CLRCLE:
-		clps_writeb(clps_readb(ep7312_pxdr) & ~0x10, ep7312_pxdr);
-		break;
-
-	case NAND_CTL_SETALE:
-		clps_writeb(clps_readb(ep7312_pxdr) | 0x20, ep7312_pxdr);
-		break;
-	case NAND_CTL_CLRALE:
-		clps_writeb(clps_readb(ep7312_pxdr) & ~0x20, ep7312_pxdr);
-		break;
-
-	case NAND_CTL_SETNCE:
-		clps_writeb((clps_readb(ep7312_pxdr) | 0x80) & ~0x40, ep7312_pxdr);
-		break;
-	case NAND_CTL_CLRNCE:
-		clps_writeb((clps_readb(ep7312_pxdr) | 0x80) | 0x40, ep7312_pxdr);
-		break;
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned char bits;
+
+		bits = (ctrl & (NAND_CLE | NAND_ALE)) << 3;
+		bits = (ctrl & NAND_NCE) << 7;
+
+		clps_writeb((clps_readb(ep7312_pxdr)  & 0xB0) | 0x10,
+			    ep7312_pxdr);
 	}
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
 /*
@@ -108,6 +102,7 @@ static int ep7312_device_ready(struct mtd_info *mtd)
 {
 	return 1;
 }
+
 #ifdef CONFIG_MTD_PARTITIONS
 const char *part_probes[] = { "cmdlinepart", NULL };
 #endif
@@ -115,18 +110,16 @@ const char *part_probes[] = { "cmdlinepart", NULL };
 /*
  * Main initialization routine
  */
-static int __init ep7312_init (void)
+static int __init ep7312_init(void)
 {
 	struct nand_chip *this;
 	const char *part_type = 0;
 	int mtd_parts_nb = 0;
 	struct mtd_partition *mtd_parts = 0;
-	void __iomem * ep7312_fio_base;
+	void __iomem *ep7312_fio_base;
 
 	/* Allocate memory for MTD device structure and private data */
-	ep7312_mtd = kmalloc(sizeof(struct mtd_info) +
-			     sizeof(struct nand_chip),
-			     GFP_KERNEL);
+	ep7312_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!ep7312_mtd) {
 		printk("Unable to allocate EDB7312 NAND MTD device structure.\n");
 		return -ENOMEM;
@@ -134,21 +127,22 @@ static int __init ep7312_init (void)
 
 	/* map physical adress */
 	ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K);
-	if(!ep7312_fio_base) {
+	if (!ep7312_fio_base) {
 		printk("ioremap EDB7312 NAND flash failed\n");
 		kfree(ep7312_mtd);
 		return -EIO;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&ep7312_mtd[1]);
+	this = (struct nand_chip *)(&ep7312_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(ep7312_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	ep7312_mtd->priv = this;
+	ep7312_mtd->owner = THIS_MODULE;
 
 	/*
 	 * Set GPIO Port B control register so that the pins are configured
@@ -159,22 +153,20 @@ static int __init ep7312_init (void)
 	/* insert callbacks */
 	this->IO_ADDR_R = ep7312_fio_base;
 	this->IO_ADDR_W = ep7312_fio_base;
-	this->hwcontrol = ep7312_hwcontrol;
+	this->cmd_ctrl = ep7312_hwcontrol;
 	this->dev_ready = ep7312_device_ready;
 	/* 15 us command delay time */
 	this->chip_delay = 15;
 
 	/* Scan to find existence of the device */
-	if (nand_scan (ep7312_mtd, 1)) {
+	if (nand_scan(ep7312_mtd, 1)) {
 		iounmap((void *)ep7312_fio_base);
-		kfree (ep7312_mtd);
+		kfree(ep7312_mtd);
 		return -ENXIO;
 	}
-
 #ifdef CONFIG_MTD_PARTITIONS
 	ep7312_mtd->name = "edb7312-nand";
-	mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes,
-					    &mtd_parts, 0);
+	mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes, &mtd_parts, 0);
 	if (mtd_parts_nb > 0)
 		part_type = "command line";
 	else
@@ -193,24 +185,23 @@ static int __init ep7312_init (void)
 	/* Return happy */
 	return 0;
 }
+
 module_init(ep7312_init);
 
 /*
  * Clean up routine
  */
-static void __exit ep7312_cleanup (void)
+static void __exit ep7312_cleanup(void)
 {
-	struct nand_chip *this = (struct nand_chip *) &ep7312_mtd[1];
+	struct nand_chip *this = (struct nand_chip *)&ep7312_mtd[1];
 
 	/* Release resources, unregister device */
-	nand_release (ap7312_mtd);
-
-	/* Free internal data buffer */
-	kfree (this->data_buf);
+	nand_release(ap7312_mtd);
 
 	/* Free the MTD device structure */
-	kfree (ep7312_mtd);
+	kfree(ep7312_mtd);
 }
+
 module_exit(ep7312_cleanup);
 
 MODULE_LICENSE("GPL");

drivers/mtd/nand/h1910.c

@@ -4,7 +4,7 @@
  *  Copyright (C) 2003 Joshua Wise (joshua@joshuawise.com)
  *
  *  Derived from drivers/mtd/nand/edb7312.c
- *       Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
+ *       Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
  *       Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
  *
  * $Id: h1910.c,v 1.6 2005/11/07 11:14:30 gleixner Exp $
@@ -26,7 +26,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
 #include <asm/io.h>
-#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */
+#include <asm/arch/hardware.h>	/* for CLPS7111_VIRT_BASE */
 #include <asm/sizes.h>
 #include <asm/arch/h1900-gpio.h>
 #include <asm/arch/ipaq.h>
@@ -45,47 +45,29 @@ static struct mtd_info *h1910_nand_mtd = NULL;
  * Define static partitions for flash device
  */
 static struct mtd_partition partition_info[] = {
-	{ name: "h1910 NAND Flash",
-		  offset: 0,
-		  size: 16*1024*1024 }
+      {name:"h1910 NAND Flash",
+	      offset:0,
+      size:16 * 1024 * 1024}
 };
+
 #define NUM_PARTITIONS 1
 
 #endif
 
-
 /*
  *	hardware specific access to control-lines
+ *
+ *	NAND_NCE: bit 0 - don't care
+ *	NAND_CLE: bit 1 - address bit 2
+ *	NAND_ALE: bit 2 - address bit 3
  */
-static void h1910_hwcontrol(struct mtd_info *mtd, int cmd)
+static void h1910_hwcontrol(struct mtd_info *mtd, int cmd,
+			    unsigned int ctrl)
 {
-	struct nand_chip* this = (struct nand_chip *) (mtd->priv);
-
-	switch(cmd) {
-
-	case NAND_CTL_SETCLE:
-		this->IO_ADDR_R |= (1 << 2);
-		this->IO_ADDR_W |= (1 << 2);
-		break;
-	case NAND_CTL_CLRCLE:
-		this->IO_ADDR_R &= ~(1 << 2);
-		this->IO_ADDR_W &= ~(1 << 2);
-		break;
-
-	case NAND_CTL_SETALE:
-		this->IO_ADDR_R |= (1 << 3);
-		this->IO_ADDR_W |= (1 << 3);
-		break;
-	case NAND_CTL_CLRALE:
-		this->IO_ADDR_R &= ~(1 << 3);
-		this->IO_ADDR_W &= ~(1 << 3);
-		break;
-
-	case NAND_CTL_SETNCE:
-		break;
-	case NAND_CTL_CLRNCE:
-		break;
-	}
+	struct nand_chip *chip = mtd->priv;
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W | ((ctrl & 0x6) << 1));
 }
 
 /*
@@ -101,7 +83,7 @@ static int h1910_device_ready(struct mtd_info *mtd)
 /*
  * Main initialization routine
  */
-static int __init h1910_init (void)
+static int __init h1910_init(void)
 {
 	struct nand_chip *this;
 	const char *part_type = 0;
@@ -119,24 +101,23 @@ static int __init h1910_init (void)
 	}
 
 	/* Allocate memory for MTD device structure and private data */
-	h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) +
-			     sizeof(struct nand_chip),
-			     GFP_KERNEL);
+	h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!h1910_nand_mtd) {
 		printk("Unable to allocate h1910 NAND MTD device structure.\n");
-		iounmap ((void *) nandaddr);
+		iounmap((void *)nandaddr);
 		return -ENOMEM;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&h1910_nand_mtd[1]);
+	this = (struct nand_chip *)(&h1910_nand_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) h1910_nand_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(h1910_nand_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	h1910_nand_mtd->priv = this;
+	h1910_nand_mtd->owner = THIS_MODULE;
 
 	/*
 	 * Enable VPEN
@@ -146,31 +127,28 @@ static int __init h1910_init (void)
 	/* insert callbacks */
 	this->IO_ADDR_R = nandaddr;
 	this->IO_ADDR_W = nandaddr;
-	this->hwcontrol = h1910_hwcontrol;
+	this->cmd_ctrl = h1910_hwcontrol;
 	this->dev_ready = NULL;	/* unknown whether that was correct or not so we will just do it like this */
 	/* 15 us command delay time */
 	this->chip_delay = 50;
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 	this->options = NAND_NO_AUTOINCR;
 
 	/* Scan to find existence of the device */
-	if (nand_scan (h1910_nand_mtd, 1)) {
+	if (nand_scan(h1910_nand_mtd, 1)) {
 		printk(KERN_NOTICE "No NAND device - returning -ENXIO\n");
-		kfree (h1910_nand_mtd);
-		iounmap ((void *) nandaddr);
+		kfree(h1910_nand_mtd);
+		iounmap((void *)nandaddr);
 		return -ENXIO;
 	}
-
 #ifdef CONFIG_MTD_CMDLINE_PARTS
-	mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts,
-						"h1910-nand");
+	mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts, "h1910-nand");
 	if (mtd_parts_nb > 0)
-	  part_type = "command line";
+		part_type = "command line";
 	else
-	  mtd_parts_nb = 0;
+		mtd_parts_nb = 0;
 #endif
-	if (mtd_parts_nb == 0)
-	{
+	if (mtd_parts_nb == 0) {
 		mtd_parts = partition_info;
 		mtd_parts_nb = NUM_PARTITIONS;
 		part_type = "static";
@@ -183,24 +161,26 @@ static int __init h1910_init (void)
 	/* Return happy */
 	return 0;
 }
+
 module_init(h1910_init);
 
 /*
  * Clean up routine
  */
-static void __exit h1910_cleanup (void)
+static void __exit h1910_cleanup(void)
 {
-	struct nand_chip *this = (struct nand_chip *) &h1910_nand_mtd[1];
+	struct nand_chip *this = (struct nand_chip *)&h1910_nand_mtd[1];
 
 	/* Release resources, unregister device */
-	nand_release (h1910_nand_mtd);
+	nand_release(h1910_nand_mtd);
 
 	/* Release io resource */
-	iounmap ((void *) this->IO_ADDR_W);
+	iounmap((void *)this->IO_ADDR_W);
 
 	/* Free the MTD device structure */
-	kfree (h1910_nand_mtd);
+	kfree(h1910_nand_mtd);
 }
+
 module_exit(h1910_cleanup);
 
 MODULE_LICENSE("GPL");

drivers/mtd/nand/nand_base.c

@@ -10,67 +10,31 @@
  *	http://www.linux-mtd.infradead.org/tech/nand.html
  *
  *  Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
- * 		  2002 Thomas Gleixner (tglx@linutronix.de)
+ *		  2002-2006 Thomas Gleixner (tglx@linutronix.de)
  *
- *  02-08-2004  tglx: support for strange chips, which cannot auto increment
- *		pages on read / read_oob
- *
- *  03-17-2004  tglx: Check ready before auto increment check. Simon Bayes
- *		pointed this out, as he marked an auto increment capable chip
- *		as NOAUTOINCR in the board driver.
- *		Make reads over block boundaries work too
- *
- *  04-14-2004	tglx: first working version for 2k page size chips
- *
- *  05-19-2004  tglx: Basic support for Renesas AG-AND chips
- *
- *  09-24-2004  tglx: add support for hardware controllers (e.g. ECC) shared
- *		among multiple independend devices. Suggestions and initial patch
- *		from Ben Dooks <ben-mtd@fluff.org>
- *
- *  12-05-2004	dmarlin: add workaround for Renesas AG-AND chips "disturb" issue.
- *		Basically, any block not rewritten may lose data when surrounding blocks
- *		are rewritten many times.  JFFS2 ensures this doesn't happen for blocks
- *		it uses, but the Bad Block Table(s) may not be rewritten.  To ensure they
- *		do not lose data, force them to be rewritten when some of the surrounding
- *		blocks are erased.  Rather than tracking a specific nearby block (which
- *		could itself go bad), use a page address 'mask' to select several blocks
- *		in the same area, and rewrite the BBT when any of them are erased.
- *
- *  01-03-2005	dmarlin: added support for the device recovery command sequence for Renesas
- *		AG-AND chips.  If there was a sudden loss of power during an erase operation,
- * 		a "device recovery" operation must be performed when power is restored
- * 		to ensure correct operation.
- *
- *  01-20-2005	dmarlin: added support for optional hardware specific callback routine to
- *		perform extra error status checks on erase and write failures.  This required
- *		adding a wrapper function for nand_read_ecc.
- *
- * 08-20-2005	vwool: suspend/resume added
- *
- * Credits:
+ *  Credits:
  *	David Woodhouse for adding multichip support
  *
  *	Aleph One Ltd. and Toby Churchill Ltd. for supporting the
  *	rework for 2K page size chips
  *
- * TODO:
+ *  TODO:
  *	Enable cached programming for 2k page size chips
  *	Check, if mtd->ecctype should be set to MTD_ECC_HW
  *	if we have HW ecc support.
  *	The AG-AND chips have nice features for speed improvement,
  *	which are not supported yet. Read / program 4 pages in one go.
  *
- * $Id: nand_base.c,v 1.150 2005/09/15 13:58:48 vwool Exp $
- *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  */
 
+#include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
+#include <linux/err.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/types.h>
@@ -88,75 +52,46 @@
 #endif
 
 /* Define default oob placement schemes for large and small page devices */
-static struct nand_oobinfo nand_oob_8 = {
-	.useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_8 = {
 	.eccbytes = 3,
 	.eccpos = {0, 1, 2},
-	.oobfree = { {3, 2}, {6, 2} }
+	.oobfree = {
+		{.offset = 3,
+		 .length = 2},
+		{.offset = 6,
+		 .length = 2}}
 };
 
-static struct nand_oobinfo nand_oob_16 = {
-	.useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_16 = {
 	.eccbytes = 6,
 	.eccpos = {0, 1, 2, 3, 6, 7},
-	.oobfree = { {8, 8} }
+	.oobfree = {
+		{.offset = 8,
+		 . length = 8}}
 };
 
-static struct nand_oobinfo nand_oob_64 = {
-	.useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_64 = {
 	.eccbytes = 24,
 	.eccpos = {
-		40, 41, 42, 43, 44, 45, 46, 47,
-		48, 49, 50, 51, 52, 53, 54, 55,
-		56, 57, 58, 59, 60, 61, 62, 63},
-	.oobfree = { {2, 38} }
+		   40, 41, 42, 43, 44, 45, 46, 47,
+		   48, 49, 50, 51, 52, 53, 54, 55,
+		   56, 57, 58, 59, 60, 61, 62, 63},
+	.oobfree = {
+		{.offset = 2,
+		 .length = 38}}
 };
 
-/* This is used for padding purposes in nand_write_oob */
-static u_char ffchars[] = {
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-};
+static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd,
+			   int new_state);
+
+static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+			     struct mtd_oob_ops *ops);
 
 /*
- * NAND low-level MTD interface functions
+ * For devices which display every fart in the system on a seperate LED. Is
+ * compiled away when LED support is disabled.
  */
-static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len);
-static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len);
-static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len);
-
-static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf);
-static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
-			  size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel);
-static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf);
-static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf);
-static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
-			   size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel);
-static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf);
-static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs,
-			unsigned long count, loff_t to, size_t * retlen);
-static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs,
-			unsigned long count, loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel);
-static int nand_erase (struct mtd_info *mtd, struct erase_info *instr);
-static void nand_sync (struct mtd_info *mtd);
-
-/* Some internal functions */
-static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf,
-		struct nand_oobinfo *oobsel, int mode);
-#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
-static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
-	u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode);
-#else
-#define nand_verify_pages(...) (0)
-#endif
-
-static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state);
+DEFINE_LED_TRIGGER(nand_led_trigger);
 
 /**
  * nand_release_device - [GENERIC] release chip
@@ -164,27 +99,19 @@ static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int ne
  *
  * Deselect, release chip lock and wake up anyone waiting on the device
  */
-static void nand_release_device (struct mtd_info *mtd)
+static void nand_release_device(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
 	/* De-select the NAND device */
-	this->select_chip(mtd, -1);
-
-	if (this->controller) {
-		/* Release the controller and the chip */
-		spin_lock(&this->controller->lock);
-		this->controller->active = NULL;
-		this->state = FL_READY;
-		wake_up(&this->controller->wq);
-		spin_unlock(&this->controller->lock);
-	} else {
-		/* Release the chip */
-		spin_lock(&this->chip_lock);
-		this->state = FL_READY;
-		wake_up(&this->wq);
-		spin_unlock(&this->chip_lock);
-	}
+	chip->select_chip(mtd, -1);
+
+	/* Release the controller and the chip */
+	spin_lock(&chip->controller->lock);
+	chip->controller->active = NULL;
+	chip->state = FL_READY;
+	wake_up(&chip->controller->wq);
+	spin_unlock(&chip->controller->lock);
 }
 
 /**
@@ -193,23 +120,10 @@ static void nand_release_device (struct mtd_info *mtd)
  *
  * Default read function for 8bit buswith
  */
-static u_char nand_read_byte(struct mtd_info *mtd)
-{
-	struct nand_chip *this = mtd->priv;
-	return readb(this->IO_ADDR_R);
-}
-
-/**
- * nand_write_byte - [DEFAULT] write one byte to the chip
- * @mtd:	MTD device structure
- * @byte:	pointer to data byte to write
- *
- * Default write function for 8it buswith
- */
-static void nand_write_byte(struct mtd_info *mtd, u_char byte)
+static uint8_t nand_read_byte(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
-	writeb(byte, this->IO_ADDR_W);
+	struct nand_chip *chip = mtd->priv;
+	return readb(chip->IO_ADDR_R);
 }
 
 /**
@@ -219,24 +133,10 @@ static void nand_write_byte(struct mtd_info *mtd, u_char byte)
  * Default read function for 16bit buswith with
  * endianess conversion
  */
-static u_char nand_read_byte16(struct mtd_info *mtd)
-{
-	struct nand_chip *this = mtd->priv;
-	return (u_char) cpu_to_le16(readw(this->IO_ADDR_R));
-}
-
-/**
- * nand_write_byte16 - [DEFAULT] write one byte endianess aware to the chip
- * @mtd:	MTD device structure
- * @byte:	pointer to data byte to write
- *
- * Default write function for 16bit buswith with
- * endianess conversion
- */
-static void nand_write_byte16(struct mtd_info *mtd, u_char byte)
+static uint8_t nand_read_byte16(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
-	writew(le16_to_cpu((u16) byte), this->IO_ADDR_W);
+	struct nand_chip *chip = mtd->priv;
+	return (uint8_t) cpu_to_le16(readw(chip->IO_ADDR_R));
 }
 
 /**
@@ -248,22 +148,8 @@ static void nand_write_byte16(struct mtd_info *mtd, u_char byte)
  */
 static u16 nand_read_word(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
-	return readw(this->IO_ADDR_R);
-}
-
-/**
- * nand_write_word - [DEFAULT] write one word to the chip
- * @mtd:	MTD device structure
- * @word:	data word to write
- *
- * Default write function for 16bit buswith without
- * endianess conversion
- */
-static void nand_write_word(struct mtd_info *mtd, u16 word)
-{
-	struct nand_chip *this = mtd->priv;
-	writew(word, this->IO_ADDR_W);
+	struct nand_chip *chip = mtd->priv;
+	return readw(chip->IO_ADDR_R);
 }
 
 /**
@@ -273,15 +159,15 @@ static void nand_write_word(struct mtd_info *mtd, u16 word)
  *
  * Default select function for 1 chip devices.
  */
-static void nand_select_chip(struct mtd_info *mtd, int chip)
+static void nand_select_chip(struct mtd_info *mtd, int chipnr)
 {
-	struct nand_chip *this = mtd->priv;
-	switch(chip) {
+	struct nand_chip *chip = mtd->priv;
+
+	switch (chipnr) {
 	case -1:
-		this->hwcontrol(mtd, NAND_CTL_CLRNCE);
+		chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE);
 		break;
 	case 0:
-		this->hwcontrol(mtd, NAND_CTL_SETNCE);
 		break;
 
 	default:
@@ -297,13 +183,13 @@ static void nand_select_chip(struct mtd_info *mtd, int chip)
  *
  * Default write function for 8bit buswith
  */
-static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
+static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
 {
 	int i;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	for (i=0; i<len; i++)
-		writeb(buf[i], this->IO_ADDR_W);
+	for (i = 0; i < len; i++)
+		writeb(buf[i], chip->IO_ADDR_W);
 }
 
 /**
@@ -314,13 +200,13 @@ static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
  *
  * Default read function for 8bit buswith
  */
-static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
 {
 	int i;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	for (i=0; i<len; i++)
-		buf[i] = readb(this->IO_ADDR_R);
+	for (i = 0; i < len; i++)
+		buf[i] = readb(chip->IO_ADDR_R);
 }
 
 /**
@@ -331,15 +217,14 @@ static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
  *
  * Default verify function for 8bit buswith
  */
-static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
+static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
 {
 	int i;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	for (i=0; i<len; i++)
-		if (buf[i] != readb(this->IO_ADDR_R))
+	for (i = 0; i < len; i++)
+		if (buf[i] != readb(chip->IO_ADDR_R))
 			return -EFAULT;
-
 	return 0;
 }
 
@@ -351,15 +236,15 @@ static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
  *
  * Default write function for 16bit buswith
  */
-static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
+static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
 {
 	int i;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	u16 *p = (u16 *) buf;
 	len >>= 1;
 
-	for (i=0; i<len; i++)
-		writew(p[i], this->IO_ADDR_W);
+	for (i = 0; i < len; i++)
+		writew(p[i], chip->IO_ADDR_W);
 
 }
 
@@ -371,15 +256,15 @@ static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
  *
  * Default read function for 16bit buswith
  */
-static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
+static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
 {
 	int i;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	u16 *p = (u16 *) buf;
 	len >>= 1;
 
-	for (i=0; i<len; i++)
-		p[i] = readw(this->IO_ADDR_R);
+	for (i = 0; i < len; i++)
+		p[i] = readw(chip->IO_ADDR_R);
 }
 
 /**
@@ -390,15 +275,15 @@ static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
  *
  * Default verify function for 16bit buswith
  */
-static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
+static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
 {
 	int i;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	u16 *p = (u16 *) buf;
 	len >>= 1;
 
-	for (i=0; i<len; i++)
-		if (p[i] != readw(this->IO_ADDR_R))
+	for (i = 0; i < len; i++)
+		if (p[i] != readw(chip->IO_ADDR_R))
 			return -EFAULT;
 
 	return 0;
@@ -415,38 +300,37 @@ static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
 static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
 {
 	int page, chipnr, res = 0;
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	u16 bad;
 
 	if (getchip) {
-		page = (int)(ofs >> this->page_shift);
-		chipnr = (int)(ofs >> this->chip_shift);
+		page = (int)(ofs >> chip->page_shift);
+		chipnr = (int)(ofs >> chip->chip_shift);
 
-		/* Grab the lock and see if the device is available */
-		nand_get_device (this, mtd, FL_READING);
+		nand_get_device(chip, mtd, FL_READING);
 
 		/* Select the NAND device */
-		this->select_chip(mtd, chipnr);
+		chip->select_chip(mtd, chipnr);
 	} else
-		page = (int) ofs;
+		page = (int)ofs;
 
-	if (this->options & NAND_BUSWIDTH_16) {
-		this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask);
-		bad = cpu_to_le16(this->read_word(mtd));
-		if (this->badblockpos & 0x1)
+	if (chip->options & NAND_BUSWIDTH_16) {
+		chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE,
+			      page & chip->pagemask);
+		bad = cpu_to_le16(chip->read_word(mtd));
+		if (chip->badblockpos & 0x1)
 			bad >>= 8;
 		if ((bad & 0xFF) != 0xff)
 			res = 1;
 	} else {
-		this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask);
-		if (this->read_byte(mtd) != 0xff)
+		chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos,
+			      page & chip->pagemask);
+		if (chip->read_byte(mtd) != 0xff)
 			res = 1;
 	}
 
-	if (getchip) {
-		/* Deselect and wake up anyone waiting on the device */
+	if (getchip)
 		nand_release_device(mtd);
-	}
 
 	return res;
 }
@@ -461,23 +345,33 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
 */
 static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
 {
-	struct nand_chip *this = mtd->priv;
-	u_char buf[2] = {0, 0};
-	size_t	retlen;
-	int block;
+	struct nand_chip *chip = mtd->priv;
+	uint8_t buf[2] = { 0, 0 };
+	int block, ret;
 
 	/* Get block number */
-	block = ((int) ofs) >> this->bbt_erase_shift;
-	if (this->bbt)
-		this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
+	block = ((int)ofs) >> chip->bbt_erase_shift;
+	if (chip->bbt)
+		chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
 
 	/* Do we have a flash based bad block table ? */
-	if (this->options & NAND_USE_FLASH_BBT)
-		return nand_update_bbt (mtd, ofs);
+	if (chip->options & NAND_USE_FLASH_BBT)
+		ret = nand_update_bbt(mtd, ofs);
+	else {
+		/* We write two bytes, so we dont have to mess with 16 bit
+		 * access
+		 */
+		ofs += mtd->oobsize;
+		chip->ops.len = 2;
+		chip->ops.datbuf = NULL;
+		chip->ops.oobbuf = buf;
+		chip->ops.ooboffs = chip->badblockpos & ~0x01;
 
-	/* We write two bytes, so we dont have to mess with 16 bit access */
-	ofs += mtd->oobsize + (this->badblockpos & ~0x01);
-	return nand_write_oob (mtd, ofs , 2, &retlen, buf);
+		ret = nand_do_write_oob(mtd, ofs, &chip->ops);
+	}
+	if (!ret)
+		mtd->ecc_stats.badblocks++;
+	return ret;
 }
 
 /**
@@ -487,12 +381,12 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
  *
  * The function expects, that the device is already selected
  */
-static int nand_check_wp (struct mtd_info *mtd)
+static int nand_check_wp(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	/* Check the WP bit */
-	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
-	return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
+	chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
+	return (chip->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
 }
 
 /**
@@ -505,32 +399,31 @@ static int nand_check_wp (struct mtd_info *mtd)
  * Check, if the block is bad. Either by reading the bad block table or
  * calling of the scan function.
  */
-static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt)
+static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip,
+			       int allowbbt)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	if (!this->bbt)
-		return this->block_bad(mtd, ofs, getchip);
+	if (!chip->bbt)
+		return chip->block_bad(mtd, ofs, getchip);
 
 	/* Return info from the table */
-	return nand_isbad_bbt (mtd, ofs, allowbbt);
+	return nand_isbad_bbt(mtd, ofs, allowbbt);
 }
 
-DEFINE_LED_TRIGGER(nand_led_trigger);
-
 /*
  * Wait for the ready pin, after a command
  * The timeout is catched later.
  */
 static void nand_wait_ready(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
-	unsigned long	timeo = jiffies + 2;
+	struct nand_chip *chip = mtd->priv;
+	unsigned long timeo = jiffies + 2;
 
 	led_trigger_event(nand_led_trigger, LED_FULL);
 	/* wait until command is processed or timeout occures */
 	do {
-		if (this->dev_ready(mtd))
+		if (chip->dev_ready(mtd))
 			break;
 		touch_softlockup_watchdog();
 	} while (time_before(jiffies, timeo));
@@ -547,21 +440,21 @@ static void nand_wait_ready(struct mtd_info *mtd)
  * Send command to NAND device. This function is used for small page
  * devices (256/512 Bytes per page)
  */
-static void nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+static void nand_command(struct mtd_info *mtd, unsigned int command,
+			 int column, int page_addr)
 {
-	register struct nand_chip *this = mtd->priv;
+	register struct nand_chip *chip = mtd->priv;
+	int ctrl = NAND_CTRL_CLE | NAND_CTRL_CHANGE;
 
-	/* Begin command latch cycle */
-	this->hwcontrol(mtd, NAND_CTL_SETCLE);
 	/*
 	 * Write out the command to the device.
 	 */
 	if (command == NAND_CMD_SEQIN) {
 		int readcmd;
 
-		if (column >= mtd->oobblock) {
+		if (column >= mtd->writesize) {
 			/* OOB area */
-			column -= mtd->oobblock;
+			column -= mtd->writesize;
 			readcmd = NAND_CMD_READOOB;
 		} else if (column < 256) {
 			/* First 256 bytes --> READ0 */
@@ -570,38 +463,37 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
 			column -= 256;
 			readcmd = NAND_CMD_READ1;
 		}
-		this->write_byte(mtd, readcmd);
+		chip->cmd_ctrl(mtd, readcmd, ctrl);
+		ctrl &= ~NAND_CTRL_CHANGE;
 	}
-	this->write_byte(mtd, command);
+	chip->cmd_ctrl(mtd, command, ctrl);
 
-	/* Set ALE and clear CLE to start address cycle */
-	this->hwcontrol(mtd, NAND_CTL_CLRCLE);
-
-	if (column != -1 || page_addr != -1) {
-		this->hwcontrol(mtd, NAND_CTL_SETALE);
-
-		/* Serially input address */
-		if (column != -1) {
-			/* Adjust columns for 16 bit buswidth */
-			if (this->options & NAND_BUSWIDTH_16)
-				column >>= 1;
-			this->write_byte(mtd, column);
-		}
-		if (page_addr != -1) {
-			this->write_byte(mtd, (unsigned char) (page_addr & 0xff));
-			this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
-			/* One more address cycle for devices > 32MiB */
-			if (this->chipsize > (32 << 20))
-				this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0x0f));
-		}
-		/* Latch in address */
-		this->hwcontrol(mtd, NAND_CTL_CLRALE);
+	/*
+	 * Address cycle, when necessary
+	 */
+	ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE;
+	/* Serially input address */
+	if (column != -1) {
+		/* Adjust columns for 16 bit buswidth */
+		if (chip->options & NAND_BUSWIDTH_16)
+			column >>= 1;
+		chip->cmd_ctrl(mtd, column, ctrl);
+		ctrl &= ~NAND_CTRL_CHANGE;
 	}
+	if (page_addr != -1) {
+		chip->cmd_ctrl(mtd, page_addr, ctrl);
+		ctrl &= ~NAND_CTRL_CHANGE;
+		chip->cmd_ctrl(mtd, page_addr >> 8, ctrl);
+		/* One more address cycle for devices > 32MiB */
+		if (chip->chipsize > (32 << 20))
+			chip->cmd_ctrl(mtd, page_addr >> 16, ctrl);
+	}
+	chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
 	/*
 	 * program and erase have their own busy handlers
 	 * status and sequential in needs no delay
-	*/
+	 */
 	switch (command) {
 
 	case NAND_CMD_PAGEPROG:
@@ -612,29 +504,30 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
 		return;
 
 	case NAND_CMD_RESET:
-		if (this->dev_ready)
+		if (chip->dev_ready)
 			break;
-		udelay(this->chip_delay);
-		this->hwcontrol(mtd, NAND_CTL_SETCLE);
-		this->write_byte(mtd, NAND_CMD_STATUS);
-		this->hwcontrol(mtd, NAND_CTL_CLRCLE);
-		while ( !(this->read_byte(mtd) & NAND_STATUS_READY));
+		udelay(chip->chip_delay);
+		chip->cmd_ctrl(mtd, NAND_CMD_STATUS,
+			       NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+		chip->cmd_ctrl(mtd,
+			       NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+		while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ;
 		return;
 
-	/* This applies to read commands */
+		/* This applies to read commands */
 	default:
 		/*
 		 * If we don't have access to the busy pin, we apply the given
 		 * command delay
-		*/
-		if (!this->dev_ready) {
-			udelay (this->chip_delay);
+		 */
+		if (!chip->dev_ready) {
+			udelay(chip->chip_delay);
 			return;
 		}
 	}
 	/* Apply this short delay always to ensure that we do wait tWB in
 	 * any case on any machine. */
-	ndelay (100);
+	ndelay(100);
 
 	nand_wait_ready(mtd);
 }
@@ -646,50 +539,49 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
  * @column:	the column address for this command, -1 if none
  * @page_addr:	the page address for this command, -1 if none
  *
- * Send command to NAND device. This is the version for the new large page devices
- * We dont have the seperate regions as we have in the small page devices.
- * We must emulate NAND_CMD_READOOB to keep the code compatible.
+ * Send command to NAND device. This is the version for the new large page
+ * devices We dont have the separate regions as we have in the small page
+ * devices.  We must emulate NAND_CMD_READOOB to keep the code compatible.
  *
  */
-static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
+			    int column, int page_addr)
 {
-	register struct nand_chip *this = mtd->priv;
+	register struct nand_chip *chip = mtd->priv;
 
 	/* Emulate NAND_CMD_READOOB */
 	if (command == NAND_CMD_READOOB) {
-		column += mtd->oobblock;
+		column += mtd->writesize;
 		command = NAND_CMD_READ0;
 	}
 
-
-	/* Begin command latch cycle */
-	this->hwcontrol(mtd, NAND_CTL_SETCLE);
-	/* Write out the command to the device. */
-	this->write_byte(mtd, (command & 0xff));
-	/* End command latch cycle */
-	this->hwcontrol(mtd, NAND_CTL_CLRCLE);
+	/* Command latch cycle */
+	chip->cmd_ctrl(mtd, command & 0xff,
+		       NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
 
 	if (column != -1 || page_addr != -1) {
-		this->hwcontrol(mtd, NAND_CTL_SETALE);
+		int ctrl = NAND_CTRL_CHANGE | NAND_NCE | NAND_ALE;
 
 		/* Serially input address */
 		if (column != -1) {
 			/* Adjust columns for 16 bit buswidth */
-			if (this->options & NAND_BUSWIDTH_16)
+			if (chip->options & NAND_BUSWIDTH_16)
 				column >>= 1;
-			this->write_byte(mtd, column & 0xff);
-			this->write_byte(mtd, column >> 8);
+			chip->cmd_ctrl(mtd, column, ctrl);
+			ctrl &= ~NAND_CTRL_CHANGE;
+			chip->cmd_ctrl(mtd, column >> 8, ctrl);
 		}
 		if (page_addr != -1) {
-			this->write_byte(mtd, (unsigned char) (page_addr & 0xff));
-			this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
+			chip->cmd_ctrl(mtd, page_addr, ctrl);
+			chip->cmd_ctrl(mtd, page_addr >> 8,
+				       NAND_NCE | NAND_ALE);
 			/* One more address cycle for devices > 128MiB */
-			if (this->chipsize > (128 << 20))
-				this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0xff));
+			if (chip->chipsize > (128 << 20))
+				chip->cmd_ctrl(mtd, page_addr >> 16,
+					       NAND_NCE | NAND_ALE);
 		}
-		/* Latch in address */
-		this->hwcontrol(mtd, NAND_CTL_CLRALE);
 	}
+	chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
 	/*
 	 * program and erase have their own busy handlers
@@ -702,55 +594,62 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
 	case NAND_CMD_ERASE1:
 	case NAND_CMD_ERASE2:
 	case NAND_CMD_SEQIN:
+	case NAND_CMD_RNDIN:
 	case NAND_CMD_STATUS:
 	case NAND_CMD_DEPLETE1:
 		return;
 
-	/*
-	 * read error status commands require only a short delay
-	 */
+		/*
+		 * read error status commands require only a short delay
+		 */
 	case NAND_CMD_STATUS_ERROR:
 	case NAND_CMD_STATUS_ERROR0:
 	case NAND_CMD_STATUS_ERROR1:
 	case NAND_CMD_STATUS_ERROR2:
 	case NAND_CMD_STATUS_ERROR3:
-		udelay(this->chip_delay);
+		udelay(chip->chip_delay);
 		return;
 
 	case NAND_CMD_RESET:
-		if (this->dev_ready)
+		if (chip->dev_ready)
 			break;
-		udelay(this->chip_delay);
-		this->hwcontrol(mtd, NAND_CTL_SETCLE);
-		this->write_byte(mtd, NAND_CMD_STATUS);
-		this->hwcontrol(mtd, NAND_CTL_CLRCLE);
-		while ( !(this->read_byte(mtd) & NAND_STATUS_READY));
+		udelay(chip->chip_delay);
+		chip->cmd_ctrl(mtd, NAND_CMD_STATUS,
+			       NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+		chip->cmd_ctrl(mtd, NAND_CMD_NONE,
+			       NAND_NCE | NAND_CTRL_CHANGE);
+		while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ;
+		return;
+
+	case NAND_CMD_RNDOUT:
+		/* No ready / busy check necessary */
+		chip->cmd_ctrl(mtd, NAND_CMD_RNDOUTSTART,
+			       NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+		chip->cmd_ctrl(mtd, NAND_CMD_NONE,
+			       NAND_NCE | NAND_CTRL_CHANGE);
 		return;
 
 	case NAND_CMD_READ0:
-		/* Begin command latch cycle */
-		this->hwcontrol(mtd, NAND_CTL_SETCLE);
-		/* Write out the start read command */
-		this->write_byte(mtd, NAND_CMD_READSTART);
-		/* End command latch cycle */
-		this->hwcontrol(mtd, NAND_CTL_CLRCLE);
-		/* Fall through into ready check */
-
-	/* This applies to read commands */
+		chip->cmd_ctrl(mtd, NAND_CMD_READSTART,
+			       NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+		chip->cmd_ctrl(mtd, NAND_CMD_NONE,
+			       NAND_NCE | NAND_CTRL_CHANGE);
+
+		/* This applies to read commands */
 	default:
 		/*
 		 * If we don't have access to the busy pin, we apply the given
 		 * command delay
-		*/
-		if (!this->dev_ready) {
-			udelay (this->chip_delay);
+		 */
+		if (!chip->dev_ready) {
+			udelay(chip->chip_delay);
 			return;
 		}
 	}
 
 	/* Apply this short delay always to ensure that we do wait tWB in
 	 * any case on any machine. */
-	ndelay (100);
+	ndelay(100);
 
 	nand_wait_ready(mtd);
 }
@@ -763,34 +662,28 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
  *
  * Get the device and lock it for exclusive access
  */
-static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state)
+static int
+nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
 {
-	struct nand_chip *active;
-	spinlock_t *lock;
-	wait_queue_head_t *wq;
-	DECLARE_WAITQUEUE (wait, current);
-
-	lock = (this->controller) ? &this->controller->lock : &this->chip_lock;
-	wq = (this->controller) ? &this->controller->wq : &this->wq;
-retry:
-	active = this;
+	spinlock_t *lock = &chip->controller->lock;
+	wait_queue_head_t *wq = &chip->controller->wq;
+	DECLARE_WAITQUEUE(wait, current);
+ retry:
 	spin_lock(lock);
 
 	/* Hardware controller shared among independend devices */
-	if (this->controller) {
-		if (this->controller->active)
-			active = this->controller->active;
-		else
-			this->controller->active = this;
-	}
-	if (active == this && this->state == FL_READY) {
-		this->state = new_state;
+	/* Hardware controller shared among independend devices */
+	if (!chip->controller->active)
+		chip->controller->active = chip;
+
+	if (chip->controller->active == chip && chip->state == FL_READY) {
+		chip->state = new_state;
 		spin_unlock(lock);
 		return 0;
 	}
 	if (new_state == FL_PM_SUSPENDED) {
 		spin_unlock(lock);
-		return (this->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN;
+		return (chip->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN;
 	}
 	set_current_state(TASK_UNINTERRUPTIBLE);
 	add_wait_queue(wq, &wait);
@@ -804,540 +697,339 @@ retry:
  * nand_wait - [DEFAULT]  wait until the command is done
  * @mtd:	MTD device structure
  * @this:	NAND chip structure
- * @state:	state to select the max. timeout value
  *
  * Wait for command done. This applies to erase and program only
  * Erase can take up to 400ms and program up to 20ms according to
  * general NAND and SmartMedia specs
  *
 */
-static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
+static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
 {
 
-	unsigned long	timeo = jiffies;
-	int	status;
+	unsigned long timeo = jiffies;
+	int status, state = chip->state;
 
 	if (state == FL_ERASING)
-		 timeo += (HZ * 400) / 1000;
+		timeo += (HZ * 400) / 1000;
 	else
-		 timeo += (HZ * 20) / 1000;
+		timeo += (HZ * 20) / 1000;
 
 	led_trigger_event(nand_led_trigger, LED_FULL);
 
 	/* Apply this short delay always to ensure that we do wait tWB in
 	 * any case on any machine. */
-	ndelay (100);
+	ndelay(100);
 
-	if ((state == FL_ERASING) && (this->options & NAND_IS_AND))
-		this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1);
+	if ((state == FL_ERASING) && (chip->options & NAND_IS_AND))
+		chip->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1);
 	else
-		this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
+		chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
 
 	while (time_before(jiffies, timeo)) {
-		/* Check, if we were interrupted */
-		if (this->state != state)
-			return 0;
-
-		if (this->dev_ready) {
-			if (this->dev_ready(mtd))
+		if (chip->dev_ready) {
+			if (chip->dev_ready(mtd))
 				break;
 		} else {
-			if (this->read_byte(mtd) & NAND_STATUS_READY)
+			if (chip->read_byte(mtd) & NAND_STATUS_READY)
 				break;
 		}
 		cond_resched();
 	}
 	led_trigger_event(nand_led_trigger, LED_OFF);
 
-	status = (int) this->read_byte(mtd);
+	status = (int)chip->read_byte(mtd);
 	return status;
 }
 
 /**
- * nand_write_page - [GENERIC] write one page
- * @mtd:	MTD device structure
- * @this:	NAND chip structure
- * @page: 	startpage inside the chip, must be called with (page & this->pagemask)
- * @oob_buf:	out of band data buffer
- * @oobsel:	out of band selecttion structre
- * @cached:	1 = enable cached programming if supported by chip
- *
- * Nand_page_program function is used for write and writev !
- * This function will always program a full page of data
- * If you call it with a non page aligned buffer, you're lost :)
- *
- * Cached programming is not supported yet.
+ * nand_read_page_raw - [Intern] read raw page data without ecc
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	buffer to store read data
  */
-static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page,
-	u_char *oob_buf,  struct nand_oobinfo *oobsel, int cached)
+static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
+			      uint8_t *buf)
 {
-	int 	i, status;
-	u_char	ecc_code[32];
-	int	eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
-	int  	*oob_config = oobsel->eccpos;
-	int	datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
-	int	eccbytes = 0;
-
-	/* FIXME: Enable cached programming */
-	cached = 0;
-
-	/* Send command to begin auto page programming */
-	this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page);
+	chip->read_buf(mtd, buf, mtd->writesize);
+	chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+	return 0;
+}
 
-	/* Write out complete page of data, take care of eccmode */
-	switch (eccmode) {
-	/* No ecc, write all */
-	case NAND_ECC_NONE:
-		printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
-		this->write_buf(mtd, this->data_poi, mtd->oobblock);
-		break;
+/**
+ * nand_read_page_swecc - {REPLACABLE] software ecc based page read function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	buffer to store read data
+ */
+static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+				uint8_t *buf)
+{
+	int i, eccsize = chip->ecc.size;
+	int eccbytes = chip->ecc.bytes;
+	int eccsteps = chip->ecc.steps;
+	uint8_t *p = buf;
+	uint8_t *ecc_calc = chip->buffers.ecccalc;
+	uint8_t *ecc_code = chip->buffers.ecccode;
+	int *eccpos = chip->ecc.layout->eccpos;
 
-	/* Software ecc 3/256, write all */
-	case NAND_ECC_SOFT:
-		for (; eccsteps; eccsteps--) {
-			this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code);
-			for (i = 0; i < 3; i++, eccidx++)
-				oob_buf[oob_config[eccidx]] = ecc_code[i];
-			datidx += this->eccsize;
-		}
-		this->write_buf(mtd, this->data_poi, mtd->oobblock);
-		break;
-	default:
-		eccbytes = this->eccbytes;
-		for (; eccsteps; eccsteps--) {
-			/* enable hardware ecc logic for write */
-			this->enable_hwecc(mtd, NAND_ECC_WRITE);
-			this->write_buf(mtd, &this->data_poi[datidx], this->eccsize);
-			this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code);
-			for (i = 0; i < eccbytes; i++, eccidx++)
-				oob_buf[oob_config[eccidx]] = ecc_code[i];
-			/* If the hardware ecc provides syndromes then
-			 * the ecc code must be written immidiately after
-			 * the data bytes (words) */
-			if (this->options & NAND_HWECC_SYNDROME)
-				this->write_buf(mtd, ecc_code, eccbytes);
-			datidx += this->eccsize;
-		}
-		break;
-	}
+	nand_read_page_raw(mtd, chip, buf);
 
-	/* Write out OOB data */
-	if (this->options & NAND_HWECC_SYNDROME)
-		this->write_buf(mtd, &oob_buf[oobsel->eccbytes], mtd->oobsize - oobsel->eccbytes);
-	else
-		this->write_buf(mtd, oob_buf, mtd->oobsize);
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
+		chip->ecc.calculate(mtd, p, &ecc_calc[i]);
 
-	/* Send command to actually program the data */
-	this->cmdfunc (mtd, cached ? NAND_CMD_CACHEDPROG : NAND_CMD_PAGEPROG, -1, -1);
+	for (i = 0; i < chip->ecc.total; i++)
+		ecc_code[i] = chip->oob_poi[eccpos[i]];
 
-	if (!cached) {
-		/* call wait ready function */
-		status = this->waitfunc (mtd, this, FL_WRITING);
+	eccsteps = chip->ecc.steps;
+	p = buf;
 
-		/* See if operation failed and additional status checks are available */
-		if ((status & NAND_STATUS_FAIL) && (this->errstat)) {
-			status = this->errstat(mtd, this, FL_WRITING, status, page);
-		}
+	for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		int stat;
 
-		/* See if device thinks it succeeded */
-		if (status & NAND_STATUS_FAIL) {
-			DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page);
-			return -EIO;
-		}
-	} else {
-		/* FIXME: Implement cached programming ! */
-		/* wait until cache is ready*/
-		// status = this->waitfunc (mtd, this, FL_CACHEDRPG);
+		stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+		if (stat == -1)
+			mtd->ecc_stats.failed++;
+		else
+			mtd->ecc_stats.corrected += stat;
 	}
 	return 0;
 }
 
-#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
 /**
- * nand_verify_pages - [GENERIC] verify the chip contents after a write
- * @mtd:	MTD device structure
- * @this:	NAND chip structure
- * @page: 	startpage inside the chip, must be called with (page & this->pagemask)
- * @numpages:	number of pages to verify
- * @oob_buf:	out of band data buffer
- * @oobsel:	out of band selecttion structre
- * @chipnr:	number of the current chip
- * @oobmode:	1 = full buffer verify, 0 = ecc only
+ * nand_read_page_hwecc - {REPLACABLE] hardware ecc based page read function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	buffer to store read data
  *
- * The NAND device assumes that it is always writing to a cleanly erased page.
- * Hence, it performs its internal write verification only on bits that
- * transitioned from 1 to 0. The device does NOT verify the whole page on a
- * byte by byte basis. It is possible that the page was not completely erased
- * or the page is becoming unusable due to wear. The read with ECC would catch
- * the error later when the ECC page check fails, but we would rather catch
- * it early in the page write stage. Better to write no data than invalid data.
+ * Not for syndrome calculating ecc controllers which need a special oob layout
  */
-static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
-	u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode)
+static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+				uint8_t *buf)
 {
-	int 	i, j, datidx = 0, oobofs = 0, res = -EIO;
-	int	eccsteps = this->eccsteps;
-	int	hweccbytes;
-	u_char 	oobdata[64];
-
-	hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0;
-
-	/* Send command to read back the first page */
-	this->cmdfunc (mtd, NAND_CMD_READ0, 0, page);
-
-	for(;;) {
-		for (j = 0; j < eccsteps; j++) {
-			/* Loop through and verify the data */
-			if (this->verify_buf(mtd, &this->data_poi[datidx], mtd->eccsize)) {
-				DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
-				goto out;
-			}
-			datidx += mtd->eccsize;
-			/* Have we a hw generator layout ? */
-			if (!hweccbytes)
-				continue;
-			if (this->verify_buf(mtd, &this->oob_buf[oobofs], hweccbytes)) {
-				DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
-				goto out;
-			}
-			oobofs += hweccbytes;
-		}
+	int i, eccsize = chip->ecc.size;
+	int eccbytes = chip->ecc.bytes;
+	int eccsteps = chip->ecc.steps;
+	uint8_t *p = buf;
+	uint8_t *ecc_calc = chip->buffers.ecccalc;
+	uint8_t *ecc_code = chip->buffers.ecccode;
+	int *eccpos = chip->ecc.layout->eccpos;
+
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		chip->ecc.hwctl(mtd, NAND_ECC_READ);
+		chip->read_buf(mtd, p, eccsize);
+		chip->ecc.calculate(mtd, p, &ecc_calc[i]);
+	}
+	chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
 
-		/* check, if we must compare all data or if we just have to
-		 * compare the ecc bytes
-		 */
-		if (oobmode) {
-			if (this->verify_buf(mtd, &oob_buf[oobofs], mtd->oobsize - hweccbytes * eccsteps)) {
-				DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
-				goto out;
-			}
-		} else {
-			/* Read always, else autoincrement fails */
-			this->read_buf(mtd, oobdata, mtd->oobsize - hweccbytes * eccsteps);
-
-			if (oobsel->useecc != MTD_NANDECC_OFF && !hweccbytes) {
-				int ecccnt = oobsel->eccbytes;
-
-				for (i = 0; i < ecccnt; i++) {
-					int idx = oobsel->eccpos[i];
-					if (oobdata[idx] != oob_buf[oobofs + idx] ) {
-						DEBUG (MTD_DEBUG_LEVEL0,
-					       	"%s: Failed ECC write "
-						"verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i);
-						goto out;
-					}
-				}
-			}
-		}
-		oobofs += mtd->oobsize - hweccbytes * eccsteps;
-		page++;
-		numpages--;
-
-		/* Apply delay or wait for ready/busy pin
-		 * Do this before the AUTOINCR check, so no problems
-		 * arise if a chip which does auto increment
-		 * is marked as NOAUTOINCR by the board driver.
-		 * Do this also before returning, so the chip is
-		 * ready for the next command.
-		*/
-		if (!this->dev_ready)
-			udelay (this->chip_delay);
-		else
-			nand_wait_ready(mtd);
+	for (i = 0; i < chip->ecc.total; i++)
+		ecc_code[i] = chip->oob_poi[eccpos[i]];
 
-		/* All done, return happy */
-		if (!numpages)
-			return 0;
+	eccsteps = chip->ecc.steps;
+	p = buf;
 
+	for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		int stat;
 
-		/* Check, if the chip supports auto page increment */
-		if (!NAND_CANAUTOINCR(this))
-			this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
+		stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+		if (stat == -1)
+			mtd->ecc_stats.failed++;
+		else
+			mtd->ecc_stats.corrected += stat;
 	}
-	/*
-	 * Terminate the read command. We come here in case of an error
-	 * So we must issue a reset command.
-	 */
-out:
-	this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1);
-	return res;
+	return 0;
 }
-#endif
 
 /**
- * nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc
- * @mtd:	MTD device structure
- * @from:	offset to read from
- * @len:	number of bytes to read
- * @retlen:	pointer to variable to store the number of read bytes
- * @buf:	the databuffer to put data
+ * nand_read_page_syndrome - {REPLACABLE] hardware ecc syndrom based page read
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	buffer to store read data
  *
- * This function simply calls nand_do_read_ecc with oob buffer and oobsel = NULL
- * and flags = 0xff
+ * The hw generator calculates the error syndrome automatically. Therefor
+ * we need a special oob layout and handling.
  */
-static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
+static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+				   uint8_t *buf)
 {
-	return nand_do_read_ecc (mtd, from, len, retlen, buf, NULL, &mtd->oobinfo, 0xff);
-}
+	int i, eccsize = chip->ecc.size;
+	int eccbytes = chip->ecc.bytes;
+	int eccsteps = chip->ecc.steps;
+	uint8_t *p = buf;
+	uint8_t *oob = chip->oob_poi;
+
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		int stat;
+
+		chip->ecc.hwctl(mtd, NAND_ECC_READ);
+		chip->read_buf(mtd, p, eccsize);
+
+		if (chip->ecc.prepad) {
+			chip->read_buf(mtd, oob, chip->ecc.prepad);
+			oob += chip->ecc.prepad;
+		}
+
+		chip->ecc.hwctl(mtd, NAND_ECC_READSYN);
+		chip->read_buf(mtd, oob, eccbytes);
+		stat = chip->ecc.correct(mtd, p, oob, NULL);
+
+		if (stat == -1)
+			mtd->ecc_stats.failed++;
+		else
+			mtd->ecc_stats.corrected += stat;
 
+		oob += eccbytes;
+
+		if (chip->ecc.postpad) {
+			chip->read_buf(mtd, oob, chip->ecc.postpad);
+			oob += chip->ecc.postpad;
+		}
+	}
+
+	/* Calculate remaining oob bytes */
+	i = mtd->oobsize - (oob - chip->oob_poi);
+	if (i)
+		chip->read_buf(mtd, oob, i);
+
+	return 0;
+}
 
 /**
- * nand_read_ecc - [MTD Interface] MTD compability function for nand_do_read_ecc
- * @mtd:	MTD device structure
- * @from:	offset to read from
- * @len:	number of bytes to read
- * @retlen:	pointer to variable to store the number of read bytes
- * @buf:	the databuffer to put data
- * @oob_buf:	filesystem supplied oob data buffer
- * @oobsel:	oob selection structure
- *
- * This function simply calls nand_do_read_ecc with flags = 0xff
+ * nand_transfer_oob - [Internal] Transfer oob to client buffer
+ * @chip:	nand chip structure
+ * @ops:	oob ops structure
  */
-static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
-			  size_t * retlen, u_char * buf, u_char * oob_buf, struct nand_oobinfo *oobsel)
+static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
+				  struct mtd_oob_ops *ops)
 {
-	/* use userspace supplied oobinfo, if zero */
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
-	return nand_do_read_ecc(mtd, from, len, retlen, buf, oob_buf, oobsel, 0xff);
+	size_t len = ops->ooblen;
+
+	switch(ops->mode) {
+
+	case MTD_OOB_PLACE:
+	case MTD_OOB_RAW:
+		memcpy(oob, chip->oob_poi + ops->ooboffs, len);
+		return oob + len;
+
+	case MTD_OOB_AUTO: {
+		struct nand_oobfree *free = chip->ecc.layout->oobfree;
+		uint32_t boffs = 0, roffs = ops->ooboffs;
+		size_t bytes = 0;
+
+		for(; free->length && len; free++, len -= bytes) {
+			/* Read request not from offset 0 ? */
+			if (unlikely(roffs)) {
+				if (roffs >= free->length) {
+					roffs -= free->length;
+					continue;
+				}
+				boffs = free->offset + roffs;
+				bytes = min_t(size_t, len,
+					      (free->length - roffs));
+				roffs = 0;
+			} else {
+				bytes = min_t(size_t, len, free->length);
+				boffs = free->offset;
+			}
+			memcpy(oob, chip->oob_poi + boffs, bytes);
+			oob += bytes;
+		}
+		return oob;
+	}
+	default:
+		BUG();
+	}
+	return NULL;
 }
 
-
 /**
- * nand_do_read_ecc - [MTD Interface] Read data with ECC
+ * nand_do_read_ops - [Internal] Read data with ECC
+ *
  * @mtd:	MTD device structure
  * @from:	offset to read from
- * @len:	number of bytes to read
- * @retlen:	pointer to variable to store the number of read bytes
- * @buf:	the databuffer to put data
- * @oob_buf:	filesystem supplied oob data buffer (can be NULL)
- * @oobsel:	oob selection structure
- * @flags:	flag to indicate if nand_get_device/nand_release_device should be preformed
- *		and how many corrected error bits are acceptable:
- *		  bits 0..7 - number of tolerable errors
- *		  bit  8    - 0 == do not get/release chip, 1 == get/release chip
  *
- * NAND read with ECC
+ * Internal function. Called with chip held.
  */
-int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
-			     size_t * retlen, u_char * buf, u_char * oob_buf,
-			     struct nand_oobinfo *oobsel, int flags)
+static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+			    struct mtd_oob_ops *ops)
 {
+	int chipnr, page, realpage, col, bytes, aligned;
+	struct nand_chip *chip = mtd->priv;
+	struct mtd_ecc_stats stats;
+	int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
+	int sndcmd = 1;
+	int ret = 0;
+	uint32_t readlen = ops->len;
+	uint8_t *bufpoi, *oob, *buf;
 
-	int i, j, col, realpage, page, end, ecc, chipnr, sndcmd = 1;
-	int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0;
-	struct nand_chip *this = mtd->priv;
-	u_char *data_poi, *oob_data = oob_buf;
-	u_char ecc_calc[32];
-	u_char ecc_code[32];
-        int eccmode, eccsteps;
-	int	*oob_config, datidx;
-	int	blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
-	int	eccbytes;
-	int	compareecc = 1;
-	int	oobreadlen;
-
-
-	DEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
-
-	/* Do not allow reads past end of device */
-	if ((from + len) > mtd->size) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n");
-		*retlen = 0;
-		return -EINVAL;
-	}
-
-	/* Grab the lock and see if the device is available */
-	if (flags & NAND_GET_DEVICE)
-		nand_get_device (this, mtd, FL_READING);
-
-	/* Autoplace of oob data ? Use the default placement scheme */
-	if (oobsel->useecc == MTD_NANDECC_AUTOPLACE)
-		oobsel = this->autooob;
-
-	eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
-	oob_config = oobsel->eccpos;
-
-	/* Select the NAND device */
-	chipnr = (int)(from >> this->chip_shift);
-	this->select_chip(mtd, chipnr);
-
-	/* First we calculate the starting page */
-	realpage = (int) (from >> this->page_shift);
-	page = realpage & this->pagemask;
-
-	/* Get raw starting column */
-	col = from & (mtd->oobblock - 1);
-
-	end = mtd->oobblock;
-	ecc = this->eccsize;
-	eccbytes = this->eccbytes;
-
-	if ((eccmode == NAND_ECC_NONE) || (this->options & NAND_HWECC_SYNDROME))
-		compareecc = 0;
-
-	oobreadlen = mtd->oobsize;
-	if (this->options & NAND_HWECC_SYNDROME)
-		oobreadlen -= oobsel->eccbytes;
+	stats = mtd->ecc_stats;
 
-	/* Loop until all data read */
-	while (read < len) {
+	chipnr = (int)(from >> chip->chip_shift);
+	chip->select_chip(mtd, chipnr);
 
-		int aligned = (!col && (len - read) >= end);
-		/*
-		 * If the read is not page aligned, we have to read into data buffer
-		 * due to ecc, else we read into return buffer direct
-		 */
-		if (aligned)
-			data_poi = &buf[read];
-		else
-			data_poi = this->data_buf;
+	realpage = (int)(from >> chip->page_shift);
+	page = realpage & chip->pagemask;
 
-		/* Check, if we have this page in the buffer
-		 *
-		 * FIXME: Make it work when we must provide oob data too,
-		 * check the usage of data_buf oob field
-		 */
-		if (realpage == this->pagebuf && !oob_buf) {
-			/* aligned read ? */
-			if (aligned)
-				memcpy (data_poi, this->data_buf, end);
-			goto readdata;
-		}
+	col = (int)(from & (mtd->writesize - 1));
+	chip->oob_poi = chip->buffers.oobrbuf;
 
-		/* Check, if we must send the read command */
-		if (sndcmd) {
-			this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
-			sndcmd = 0;
-		}
+	buf = ops->datbuf;
+	oob = ops->oobbuf;
 
-		/* get oob area, if we have no oob buffer from fs-driver */
-		if (!oob_buf || oobsel->useecc == MTD_NANDECC_AUTOPLACE ||
-			oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
-			oob_data = &this->data_buf[end];
+	while(1) {
+		bytes = min(mtd->writesize - col, readlen);
+		aligned = (bytes == mtd->writesize);
 
-		eccsteps = this->eccsteps;
+		/* Is the current page in the buffer ? */
+		if (realpage != chip->pagebuf || oob) {
+			bufpoi = aligned ? buf : chip->buffers.databuf;
 
-		switch (eccmode) {
-		case NAND_ECC_NONE: {	/* No ECC, Read in a page */
-			static unsigned long lastwhinge = 0;
-			if ((lastwhinge / HZ) != (jiffies / HZ)) {
-				printk (KERN_WARNING "Reading data from NAND FLASH without ECC is not recommended\n");
-				lastwhinge = jiffies;
+			if (likely(sndcmd)) {
+				chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
+				sndcmd = 0;
 			}
-			this->read_buf(mtd, data_poi, end);
-			break;
-		}
 
-		case NAND_ECC_SOFT:	/* Software ECC 3/256: Read in a page + oob data */
-			this->read_buf(mtd, data_poi, end);
-			for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc)
-				this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]);
-			break;
+			/* Now read the page into the buffer */
+			ret = chip->ecc.read_page(mtd, chip, bufpoi);
+			if (ret < 0)
+				break;
 
-		default:
-			for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) {
-				this->enable_hwecc(mtd, NAND_ECC_READ);
-				this->read_buf(mtd, &data_poi[datidx], ecc);
-
-				/* HW ecc with syndrome calculation must read the
-				 * syndrome from flash immidiately after the data */
-				if (!compareecc) {
-					/* Some hw ecc generators need to know when the
-					 * syndrome is read from flash */
-					this->enable_hwecc(mtd, NAND_ECC_READSYN);
-					this->read_buf(mtd, &oob_data[i], eccbytes);
-					/* We calc error correction directly, it checks the hw
-					 * generator for an error, reads back the syndrome and
-					 * does the error correction on the fly */
-					ecc_status = this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]);
-					if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
-						DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: "
-							"Failed ECC read, page 0x%08x on chip %d\n", page, chipnr);
-						ecc_failed++;
-					}
-				} else {
-					this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]);
-				}
+			/* Transfer not aligned data */
+			if (!aligned) {
+				chip->pagebuf = realpage;
+				memcpy(buf, chip->buffers.databuf + col, bytes);
 			}
-			break;
-		}
-
-		/* read oobdata */
-		this->read_buf(mtd, &oob_data[mtd->oobsize - oobreadlen], oobreadlen);
-
-		/* Skip ECC check, if not requested (ECC_NONE or HW_ECC with syndromes) */
-		if (!compareecc)
-			goto readoob;
 
-		/* Pick the ECC bytes out of the oob data */
-		for (j = 0; j < oobsel->eccbytes; j++)
-			ecc_code[j] = oob_data[oob_config[j]];
+			buf += bytes;
 
-		/* correct data, if neccecary */
-		for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) {
-			ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]);
-
-			/* Get next chunk of ecc bytes */
-			j += eccbytes;
-
-			/* Check, if we have a fs supplied oob-buffer,
-			 * This is the legacy mode. Used by YAFFS1
-			 * Should go away some day
-			 */
-			if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) {
-				int *p = (int *)(&oob_data[mtd->oobsize]);
-				p[i] = ecc_status;
+			if (unlikely(oob)) {
+				/* Raw mode does data:oob:data:oob */
+				if (ops->mode != MTD_OOB_RAW)
+					oob = nand_transfer_oob(chip, oob, ops);
+				else
+					buf = nand_transfer_oob(chip, buf, ops);
 			}
 
-			if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
-				DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page);
-				ecc_failed++;
+			if (!(chip->options & NAND_NO_READRDY)) {
+				/*
+				 * Apply delay or wait for ready/busy pin. Do
+				 * this before the AUTOINCR check, so no
+				 * problems arise if a chip which does auto
+				 * increment is marked as NOAUTOINCR by the
+				 * board driver.
+				 */
+				if (!chip->dev_ready)
+					udelay(chip->chip_delay);
+				else
+					nand_wait_ready(mtd);
 			}
+		} else {
+			memcpy(buf, chip->buffers.databuf + col, bytes);
+			buf += bytes;
 		}
 
-	readoob:
-		/* check, if we have a fs supplied oob-buffer */
-		if (oob_buf) {
-			/* without autoplace. Legacy mode used by YAFFS1 */
-			switch(oobsel->useecc) {
-			case MTD_NANDECC_AUTOPLACE:
-			case MTD_NANDECC_AUTOPL_USR:
-				/* Walk through the autoplace chunks */
-				for (i = 0; oobsel->oobfree[i][1]; i++) {
-					int from = oobsel->oobfree[i][0];
-					int num = oobsel->oobfree[i][1];
-					memcpy(&oob_buf[oob], &oob_data[from], num);
-					oob += num;
-				}
-				break;
-			case MTD_NANDECC_PLACE:
-				/* YAFFS1 legacy mode */
-				oob_data += this->eccsteps * sizeof (int);
-			default:
-				oob_data += mtd->oobsize;
-			}
-		}
-	readdata:
-		/* Partial page read, transfer data into fs buffer */
-		if (!aligned) {
-			for (j = col; j < end && read < len; j++)
-				buf[read++] = data_poi[j];
-			this->pagebuf = realpage;
-		} else
-			read += mtd->oobblock;
-
-		/* Apply delay or wait for ready/busy pin
-		 * Do this before the AUTOINCR check, so no problems
-		 * arise if a chip which does auto increment
-		 * is marked as NOAUTOINCR by the board driver.
-		*/
-		if (!this->dev_ready)
-			udelay (this->chip_delay);
-		else
-			nand_wait_ready(mtd);
+		readlen -= bytes;
 
-		if (read == len)
+		if (!readlen)
 			break;
 
 		/* For subsequent reads align to page boundary. */
@@ -1345,701 +1037,775 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
 		/* Increment page address */
 		realpage++;
 
-		page = realpage & this->pagemask;
+		page = realpage & chip->pagemask;
 		/* Check, if we cross a chip boundary */
 		if (!page) {
 			chipnr++;
-			this->select_chip(mtd, -1);
-			this->select_chip(mtd, chipnr);
+			chip->select_chip(mtd, -1);
+			chip->select_chip(mtd, chipnr);
 		}
+
 		/* Check, if the chip supports auto page increment
 		 * or if we have hit a block boundary.
-		*/
-		if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
+		 */
+		if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck))
 			sndcmd = 1;
 	}
 
-	/* Deselect and wake up anyone waiting on the device */
-	if (flags & NAND_GET_DEVICE)
-		nand_release_device(mtd);
+	ops->retlen = ops->len - (size_t) readlen;
 
-	/*
-	 * Return success, if no ECC failures, else -EBADMSG
-	 * fs driver will take care of that, because
-	 * retlen == desired len and result == -EBADMSG
-	 */
-	*retlen = read;
-	return ecc_failed ? -EBADMSG : 0;
+	if (ret)
+		return ret;
+
+	if (mtd->ecc_stats.failed - stats.failed)
+		return -EBADMSG;
+
+	return  mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0;
 }
 
 /**
- * nand_read_oob - [MTD Interface] NAND read out-of-band
+ * nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc
  * @mtd:	MTD device structure
  * @from:	offset to read from
  * @len:	number of bytes to read
  * @retlen:	pointer to variable to store the number of read bytes
  * @buf:	the databuffer to put data
  *
- * NAND read out-of-band data from the spare area
+ * Get hold of the chip and call nand_do_read
  */
-static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
+static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
+		     size_t *retlen, uint8_t *buf)
 {
-	int i, col, page, chipnr;
-	struct nand_chip *this = mtd->priv;
-	int	blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
-
-	DEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
-
-	/* Shift to get page */
-	page = (int)(from >> this->page_shift);
-	chipnr = (int)(from >> this->chip_shift);
-
-	/* Mask to get column */
-	col = from & (mtd->oobsize - 1);
-
-	/* Initialize return length value */
-	*retlen = 0;
+	struct nand_chip *chip = mtd->priv;
+	int ret;
 
 	/* Do not allow reads past end of device */
-	if ((from + len) > mtd->size) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: Attempt read beyond end of device\n");
-		*retlen = 0;
+	if ((from + len) > mtd->size)
 		return -EINVAL;
-	}
-
-	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd , FL_READING);
-
-	/* Select the NAND device */
-	this->select_chip(mtd, chipnr);
+	if (!len)
+		return 0;
 
-	/* Send the read command */
-	this->cmdfunc (mtd, NAND_CMD_READOOB, col, page & this->pagemask);
-	/*
-	 * Read the data, if we read more than one page
-	 * oob data, let the device transfer the data !
-	 */
-	i = 0;
-	while (i < len) {
-		int thislen = mtd->oobsize - col;
-		thislen = min_t(int, thislen, len);
-		this->read_buf(mtd, &buf[i], thislen);
-		i += thislen;
-
-		/* Read more ? */
-		if (i < len) {
-			page++;
-			col = 0;
-
-			/* Check, if we cross a chip boundary */
-			if (!(page & this->pagemask)) {
-				chipnr++;
-				this->select_chip(mtd, -1);
-				this->select_chip(mtd, chipnr);
-			}
+	nand_get_device(chip, mtd, FL_READING);
 
-			/* Apply delay or wait for ready/busy pin
-			 * Do this before the AUTOINCR check, so no problems
-			 * arise if a chip which does auto increment
-			 * is marked as NOAUTOINCR by the board driver.
-			 */
-			if (!this->dev_ready)
-				udelay (this->chip_delay);
-			else
-				nand_wait_ready(mtd);
+	chip->ops.len = len;
+	chip->ops.datbuf = buf;
+	chip->ops.oobbuf = NULL;
 
-			/* Check, if the chip supports auto page increment
-			 * or if we have hit a block boundary.
-			*/
-			if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) {
-				/* For subsequent page reads set offset to 0 */
-			        this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask);
-			}
-		}
-	}
+	ret = nand_do_read_ops(mtd, from, &chip->ops);
 
-	/* Deselect and wake up anyone waiting on the device */
 	nand_release_device(mtd);
 
-	/* Return happy */
-	*retlen = len;
-	return 0;
+	*retlen = chip->ops.retlen;
+	return ret;
 }
 
 /**
- * nand_read_raw - [GENERIC] Read raw data including oob into buffer
- * @mtd:	MTD device structure
- * @buf:	temporary buffer
- * @from:	offset to read from
- * @len:	number of bytes to read
- * @ooblen:	number of oob data bytes to read
- *
- * Read raw data including oob into buffer
+ * nand_read_oob_std - [REPLACABLE] the most common OOB data read function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @page:	page number to read
+ * @sndcmd:	flag whether to issue read command or not
  */
-int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen)
+static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+			     int page, int sndcmd)
 {
-	struct nand_chip *this = mtd->priv;
-	int page = (int) (from >> this->page_shift);
-	int chip = (int) (from >> this->chip_shift);
-	int sndcmd = 1;
-	int cnt = 0;
-	int pagesize = mtd->oobblock + mtd->oobsize;
-	int	blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
-
-	/* Do not allow reads past end of device */
-	if ((from + len) > mtd->size) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_read_raw: Attempt read beyond end of device\n");
-		return -EINVAL;
+	if (sndcmd) {
+		chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
+		sndcmd = 0;
 	}
+	chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+	return sndcmd;
+}
 
-	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd , FL_READING);
+/**
+ * nand_read_oob_syndrome - [REPLACABLE] OOB data read function for HW ECC
+ *			    with syndromes
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @page:	page number to read
+ * @sndcmd:	flag whether to issue read command or not
+ */
+static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+				  int page, int sndcmd)
+{
+	uint8_t *buf = chip->oob_poi;
+	int length = mtd->oobsize;
+	int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
+	int eccsize = chip->ecc.size;
+	uint8_t *bufpoi = buf;
+	int i, toread, sndrnd = 0, pos;
+
+	chip->cmdfunc(mtd, NAND_CMD_READ0, chip->ecc.size, page);
+	for (i = 0; i < chip->ecc.steps; i++) {
+		if (sndrnd) {
+			pos = eccsize + i * (eccsize + chunk);
+			if (mtd->writesize > 512)
+				chip->cmdfunc(mtd, NAND_CMD_RNDOUT, pos, -1);
+			else
+				chip->cmdfunc(mtd, NAND_CMD_READ0, pos, page);
+		} else
+			sndrnd = 1;
+		toread = min_t(int, length, chunk);
+		chip->read_buf(mtd, bufpoi, toread);
+		bufpoi += toread;
+		length -= toread;
+	}
+	if (length > 0)
+		chip->read_buf(mtd, bufpoi, length);
 
-	this->select_chip (mtd, chip);
+	return 1;
+}
+
+/**
+ * nand_write_oob_std - [REPLACABLE] the most common OOB data write function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @page:	page number to write
+ */
+static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+			      int page)
+{
+	int status = 0;
+	const uint8_t *buf = chip->oob_poi;
+	int length = mtd->oobsize;
 
-	/* Add requested oob length */
-	len += ooblen;
+	chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
+	chip->write_buf(mtd, buf, length);
+	/* Send command to program the OOB data */
+	chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
 
-	while (len) {
-		if (sndcmd)
-			this->cmdfunc (mtd, NAND_CMD_READ0, 0, page & this->pagemask);
-		sndcmd = 0;
+	status = chip->waitfunc(mtd, chip);
 
-		this->read_buf (mtd, &buf[cnt], pagesize);
+	return status;
+}
 
-		len -= pagesize;
-		cnt += pagesize;
-		page++;
+/**
+ * nand_write_oob_syndrome - [REPLACABLE] OOB data write function for HW ECC
+ *			     with syndrome - only for large page flash !
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @page:	page number to write
+ */
+static int nand_write_oob_syndrome(struct mtd_info *mtd,
+				   struct nand_chip *chip, int page)
+{
+	int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
+	int eccsize = chip->ecc.size, length = mtd->oobsize;
+	int i, len, pos, status = 0, sndcmd = 0, steps = chip->ecc.steps;
+	const uint8_t *bufpoi = chip->oob_poi;
 
-		if (!this->dev_ready)
-			udelay (this->chip_delay);
-		else
-			nand_wait_ready(mtd);
+	/*
+	 * data-ecc-data-ecc ... ecc-oob
+	 * or
+	 * data-pad-ecc-pad-data-pad .... ecc-pad-oob
+	 */
+	if (!chip->ecc.prepad && !chip->ecc.postpad) {
+		pos = steps * (eccsize + chunk);
+		steps = 0;
+	} else
+		pos = eccsize + chunk;
 
-		/* Check, if the chip supports auto page increment */
-		if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
+	chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page);
+	for (i = 0; i < steps; i++) {
+		if (sndcmd) {
+			if (mtd->writesize <= 512) {
+				uint32_t fill = 0xFFFFFFFF;
+
+				len = eccsize;
+				while (len > 0) {
+					int num = min_t(int, len, 4);
+					chip->write_buf(mtd, (uint8_t *)&fill,
+							num);
+					len -= num;
+				}
+			} else {
+				pos = eccsize + i * (eccsize + chunk);
+				chip->cmdfunc(mtd, NAND_CMD_RNDIN, pos, -1);
+			}
+		} else
 			sndcmd = 1;
+		len = min_t(int, length, chunk);
+		chip->write_buf(mtd, bufpoi, len);
+		bufpoi += len;
+		length -= len;
 	}
+	if (length > 0)
+		chip->write_buf(mtd, bufpoi, length);
 
-	/* Deselect and wake up anyone waiting on the device */
-	nand_release_device(mtd);
-	return 0;
-}
+	chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+	status = chip->waitfunc(mtd, chip);
 
+	return status & NAND_STATUS_FAIL ? -EIO : 0;
+}
 
 /**
- * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer
+ * nand_do_read_oob - [Intern] NAND read out-of-band
  * @mtd:	MTD device structure
- * @fsbuf:	buffer given by fs driver
- * @oobsel:	out of band selection structre
- * @autoplace:	1 = place given buffer into the oob bytes
- * @numpages:	number of pages to prepare
- *
- * Return:
- * 1. Filesystem buffer available and autoplacement is off,
- *    return filesystem buffer
- * 2. No filesystem buffer or autoplace is off, return internal
- *    buffer
- * 3. Filesystem buffer is given and autoplace selected
- *    put data from fs buffer into internal buffer and
- *    retrun internal buffer
- *
- * Note: The internal buffer is filled with 0xff. This must
- * be done only once, when no autoplacement happens
- * Autoplacement sets the buffer dirty flag, which
- * forces the 0xff fill before using the buffer again.
+ * @from:	offset to read from
+ * @ops:	oob operations description structure
  *
-*/
-static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct nand_oobinfo *oobsel,
-		int autoplace, int numpages)
+ * NAND read out-of-band data from the spare area
+ */
+static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+			    struct mtd_oob_ops *ops)
 {
-	struct nand_chip *this = mtd->priv;
-	int i, len, ofs;
-
-	/* Zero copy fs supplied buffer */
-	if (fsbuf && !autoplace)
-		return fsbuf;
-
-	/* Check, if the buffer must be filled with ff again */
-	if (this->oobdirty) {
-		memset (this->oob_buf, 0xff,
-			mtd->oobsize << (this->phys_erase_shift - this->page_shift));
-		this->oobdirty = 0;
-	}
+	int page, realpage, chipnr, sndcmd = 1;
+	struct nand_chip *chip = mtd->priv;
+	int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
+	int readlen = ops->len;
+	uint8_t *buf = ops->oobbuf;
+
+	DEBUG(MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08Lx, len = %i\n",
+	      (unsigned long long)from, readlen);
+
+	chipnr = (int)(from >> chip->chip_shift);
+	chip->select_chip(mtd, chipnr);
+
+	/* Shift to get page */
+	realpage = (int)(from >> chip->page_shift);
+	page = realpage & chip->pagemask;
+
+	chip->oob_poi = chip->buffers.oobrbuf;
+
+	while(1) {
+		sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd);
+		buf = nand_transfer_oob(chip, buf, ops);
 
-	/* If we have no autoplacement or no fs buffer use the internal one */
-	if (!autoplace || !fsbuf)
-		return this->oob_buf;
-
-	/* Walk through the pages and place the data */
-	this->oobdirty = 1;
-	ofs = 0;
-	while (numpages--) {
-		for (i = 0, len = 0; len < mtd->oobavail; i++) {
-			int to = ofs + oobsel->oobfree[i][0];
-			int num = oobsel->oobfree[i][1];
-			memcpy (&this->oob_buf[to], fsbuf, num);
-			len += num;
-			fsbuf += num;
+		readlen -= ops->ooblen;
+		if (!readlen)
+			break;
+
+		if (!(chip->options & NAND_NO_READRDY)) {
+			/*
+			 * Apply delay or wait for ready/busy pin. Do this
+			 * before the AUTOINCR check, so no problems arise if a
+			 * chip which does auto increment is marked as
+			 * NOAUTOINCR by the board driver.
+			 */
+			if (!chip->dev_ready)
+				udelay(chip->chip_delay);
+			else
+				nand_wait_ready(mtd);
 		}
-		ofs += mtd->oobavail;
+
+		/* Increment page address */
+		realpage++;
+
+		page = realpage & chip->pagemask;
+		/* Check, if we cross a chip boundary */
+		if (!page) {
+			chipnr++;
+			chip->select_chip(mtd, -1);
+			chip->select_chip(mtd, chipnr);
+		}
+
+		/* Check, if the chip supports auto page increment
+		 * or if we have hit a block boundary.
+		 */
+		if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck))
+			sndcmd = 1;
 	}
-	return this->oob_buf;
-}
 
-#define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0
+	ops->retlen = ops->len;
+	return 0;
+}
 
 /**
- * nand_write - [MTD Interface] compability function for nand_write_ecc
+ * nand_read_oob - [MTD Interface] NAND read data and/or out-of-band
  * @mtd:	MTD device structure
- * @to:		offset to write to
- * @len:	number of bytes to write
- * @retlen:	pointer to variable to store the number of written bytes
- * @buf:	the data to write
- *
- * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL
+ * @from:	offset to read from
+ * @ops:	oob operation description structure
  *
-*/
-static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
+ * NAND read data and/or out-of-band data
+ */
+static int nand_read_oob(struct mtd_info *mtd, loff_t from,
+			 struct mtd_oob_ops *ops)
 {
-	return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL));
+	int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip,
+			 uint8_t *buf) = NULL;
+	struct nand_chip *chip = mtd->priv;
+	int ret = -ENOTSUPP;
+
+	ops->retlen = 0;
+
+	/* Do not allow reads past end of device */
+	if ((from + ops->len) > mtd->size) {
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: "
+		      "Attempt read beyond end of device\n");
+		return -EINVAL;
+	}
+
+	nand_get_device(chip, mtd, FL_READING);
+
+	switch(ops->mode) {
+	case MTD_OOB_PLACE:
+	case MTD_OOB_AUTO:
+		break;
+
+	case MTD_OOB_RAW:
+		/* Replace the read_page algorithm temporary */
+		read_page = chip->ecc.read_page;
+		chip->ecc.read_page = nand_read_page_raw;
+		break;
+
+	default:
+		goto out;
+	}
+
+	if (!ops->datbuf)
+		ret = nand_do_read_oob(mtd, from, ops);
+	else
+		ret = nand_do_read_ops(mtd, from, ops);
+
+	if (unlikely(ops->mode == MTD_OOB_RAW))
+		chip->ecc.read_page = read_page;
+ out:
+	nand_release_device(mtd);
+	return ret;
 }
 
+
 /**
- * nand_write_ecc - [MTD Interface] NAND write with ECC
- * @mtd:	MTD device structure
- * @to:		offset to write to
- * @len:	number of bytes to write
- * @retlen:	pointer to variable to store the number of written bytes
- * @buf:	the data to write
- * @eccbuf:	filesystem supplied oob data buffer
- * @oobsel:	oob selection structure
- *
- * NAND write with ECC
+ * nand_write_page_raw - [Intern] raw page write function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	data buffer
  */
-static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
-			   size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel)
+static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
+				const uint8_t *buf)
 {
-	int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr;
-	int autoplace = 0, numpages, totalpages;
-	struct nand_chip *this = mtd->priv;
-	u_char *oobbuf, *bufstart;
-	int	ppblock = (1 << (this->phys_erase_shift - this->page_shift));
+	chip->write_buf(mtd, buf, mtd->writesize);
+	chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
+}
 
-	DEBUG (MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+/**
+ * nand_write_page_swecc - {REPLACABLE] software ecc based page write function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	data buffer
+ */
+static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+				  const uint8_t *buf)
+{
+	int i, eccsize = chip->ecc.size;
+	int eccbytes = chip->ecc.bytes;
+	int eccsteps = chip->ecc.steps;
+	uint8_t *ecc_calc = chip->buffers.ecccalc;
+	const uint8_t *p = buf;
+	int *eccpos = chip->ecc.layout->eccpos;
 
-	/* Initialize retlen, in case of early exit */
-	*retlen = 0;
+	/* Software ecc calculation */
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
+		chip->ecc.calculate(mtd, p, &ecc_calc[i]);
 
-	/* Do not allow write past end of device */
-	if ((to + len) > mtd->size) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n");
-		return -EINVAL;
-	}
+	for (i = 0; i < chip->ecc.total; i++)
+		chip->oob_poi[eccpos[i]] = ecc_calc[i];
 
-	/* reject writes, which are not page aligned */
-	if (NOTALIGNED (to) || NOTALIGNED(len)) {
-		printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
-		return -EINVAL;
+	nand_write_page_raw(mtd, chip, buf);
+}
+
+/**
+ * nand_write_page_hwecc - {REPLACABLE] hardware ecc based page write function
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	data buffer
+ */
+static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+				  const uint8_t *buf)
+{
+	int i, eccsize = chip->ecc.size;
+	int eccbytes = chip->ecc.bytes;
+	int eccsteps = chip->ecc.steps;
+	uint8_t *ecc_calc = chip->buffers.ecccalc;
+	const uint8_t *p = buf;
+	int *eccpos = chip->ecc.layout->eccpos;
+
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
+		chip->write_buf(mtd, p, eccsize);
+		chip->ecc.calculate(mtd, p, &ecc_calc[i]);
 	}
 
-	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd, FL_WRITING);
+	for (i = 0; i < chip->ecc.total; i++)
+		chip->oob_poi[eccpos[i]] = ecc_calc[i];
 
-	/* Calculate chipnr */
-	chipnr = (int)(to >> this->chip_shift);
-	/* Select the NAND device */
-	this->select_chip(mtd, chipnr);
+	chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
+}
 
-	/* Check, if it is write protected */
-	if (nand_check_wp(mtd))
-		goto out;
+/**
+ * nand_write_page_syndrome - {REPLACABLE] hardware ecc syndrom based page write
+ * @mtd:	mtd info structure
+ * @chip:	nand chip info structure
+ * @buf:	data buffer
+ *
+ * The hw generator calculates the error syndrome automatically. Therefor
+ * we need a special oob layout and handling.
+ */
+static void nand_write_page_syndrome(struct mtd_info *mtd,
+				    struct nand_chip *chip, const uint8_t *buf)
+{
+	int i, eccsize = chip->ecc.size;
+	int eccbytes = chip->ecc.bytes;
+	int eccsteps = chip->ecc.steps;
+	const uint8_t *p = buf;
+	uint8_t *oob = chip->oob_poi;
 
-	/* if oobsel is NULL, use chip defaults */
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
 
-	/* Autoplace of oob data ? Use the default placement scheme */
-	if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) {
-		oobsel = this->autooob;
-		autoplace = 1;
-	}
-	if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
-		autoplace = 1;
+		chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
+		chip->write_buf(mtd, p, eccsize);
 
-	/* Setup variables and oob buffer */
-	totalpages = len >> this->page_shift;
-	page = (int) (to >> this->page_shift);
-	/* Invalidate the page cache, if we write to the cached page */
-	if (page <= this->pagebuf && this->pagebuf < (page + totalpages))
-		this->pagebuf = -1;
-
-	/* Set it relative to chip */
-	page &= this->pagemask;
-	startpage = page;
-	/* Calc number of pages we can write in one go */
-	numpages = min (ppblock - (startpage  & (ppblock - 1)), totalpages);
-	oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, autoplace, numpages);
-	bufstart = (u_char *)buf;
-
-	/* Loop until all data is written */
-	while (written < len) {
-
-		this->data_poi = (u_char*) &buf[written];
-		/* Write one page. If this is the last page to write
-		 * or the last page in this block, then use the
-		 * real pageprogram command, else select cached programming
-		 * if supported by the chip.
-		 */
-		ret = nand_write_page (mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0));
-		if (ret) {
-			DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret);
-			goto out;
+		if (chip->ecc.prepad) {
+			chip->write_buf(mtd, oob, chip->ecc.prepad);
+			oob += chip->ecc.prepad;
 		}
-		/* Next oob page */
-		oob += mtd->oobsize;
-		/* Update written bytes count */
-		written += mtd->oobblock;
-		if (written == len)
-			goto cmp;
 
-		/* Increment page address */
-		page++;
-
-		/* Have we hit a block boundary ? Then we have to verify and
-		 * if verify is ok, we have to setup the oob buffer for
-		 * the next pages.
-		*/
-		if (!(page & (ppblock - 1))){
-			int ofs;
-			this->data_poi = bufstart;
-			ret = nand_verify_pages (mtd, this, startpage,
-				page - startpage,
-				oobbuf, oobsel, chipnr, (eccbuf != NULL));
-			if (ret) {
-				DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret);
-				goto out;
-			}
-			*retlen = written;
-
-			ofs = autoplace ? mtd->oobavail : mtd->oobsize;
-			if (eccbuf)
-				eccbuf += (page - startpage) * ofs;
-			totalpages -= page - startpage;
-			numpages = min (totalpages, ppblock);
-			page &= this->pagemask;
-			startpage = page;
-			oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel,
-					autoplace, numpages);
-			oob = 0;
-			/* Check, if we cross a chip boundary */
-			if (!page) {
-				chipnr++;
-				this->select_chip(mtd, -1);
-				this->select_chip(mtd, chipnr);
-			}
+		chip->ecc.calculate(mtd, p, oob);
+		chip->write_buf(mtd, oob, eccbytes);
+		oob += eccbytes;
+
+		if (chip->ecc.postpad) {
+			chip->write_buf(mtd, oob, chip->ecc.postpad);
+			oob += chip->ecc.postpad;
 		}
 	}
-	/* Verify the remaining pages */
-cmp:
-	this->data_poi = bufstart;
- 	ret = nand_verify_pages (mtd, this, startpage, totalpages,
-		oobbuf, oobsel, chipnr, (eccbuf != NULL));
-	if (!ret)
-		*retlen = written;
-	else
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret);
-
-out:
-	/* Deselect and wake up anyone waiting on the device */
-	nand_release_device(mtd);
 
-	return ret;
+	/* Calculate remaining oob bytes */
+	i = mtd->oobsize - (oob - chip->oob_poi);
+	if (i)
+		chip->write_buf(mtd, oob, i);
 }
 
-
 /**
- * nand_write_oob - [MTD Interface] NAND write out-of-band
+ * nand_write_page - [INTERNAL] write one page
  * @mtd:	MTD device structure
- * @to:		offset to write to
- * @len:	number of bytes to write
- * @retlen:	pointer to variable to store the number of written bytes
+ * @chip:	NAND chip descriptor
  * @buf:	the data to write
- *
- * NAND write out-of-band
+ * @page:	page number to write
+ * @cached:	cached programming
  */
-static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
+static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+			   const uint8_t *buf, int page, int cached)
 {
-	int column, page, status, ret = -EIO, chipnr;
-	struct nand_chip *this = mtd->priv;
+	int status;
 
-	DEBUG (MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+	chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);
 
-	/* Shift to get page */
-	page = (int) (to >> this->page_shift);
-	chipnr = (int) (to >> this->chip_shift);
+	chip->ecc.write_page(mtd, chip, buf);
 
-	/* Mask to get column */
-	column = to & (mtd->oobsize - 1);
+	/*
+	 * Cached progamming disabled for now, Not sure if its worth the
+	 * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s)
+	 */
+	cached = 0;
 
-	/* Initialize return length value */
-	*retlen = 0;
+	if (!cached || !(chip->options & NAND_CACHEPRG)) {
 
-	/* Do not allow write past end of page */
-	if ((column + len) > mtd->oobsize) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: Attempt to write past end of page\n");
-		return -EINVAL;
+		chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+		status = chip->waitfunc(mtd, chip);
+		/*
+		 * See if operation failed and additional status checks are
+		 * available
+		 */
+		if ((status & NAND_STATUS_FAIL) && (chip->errstat))
+			status = chip->errstat(mtd, chip, FL_WRITING, status,
+					       page);
+
+		if (status & NAND_STATUS_FAIL)
+			return -EIO;
+	} else {
+		chip->cmdfunc(mtd, NAND_CMD_CACHEDPROG, -1, -1);
+		status = chip->waitfunc(mtd, chip);
 	}
 
-	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd, FL_WRITING);
+#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
+	/* Send command to read back the data */
+	chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
 
-	/* Select the NAND device */
-	this->select_chip(mtd, chipnr);
+	if (chip->verify_buf(mtd, buf, mtd->writesize))
+		return -EIO;
+#endif
+	return 0;
+}
+
+/**
+ * nand_fill_oob - [Internal] Transfer client buffer to oob
+ * @chip:	nand chip structure
+ * @oob:	oob data buffer
+ * @ops:	oob ops structure
+ */
+static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob,
+				  struct mtd_oob_ops *ops)
+{
+	size_t len = ops->ooblen;
+
+	switch(ops->mode) {
+
+	case MTD_OOB_PLACE:
+	case MTD_OOB_RAW:
+		memcpy(chip->oob_poi + ops->ooboffs, oob, len);
+		return oob + len;
+
+	case MTD_OOB_AUTO: {
+		struct nand_oobfree *free = chip->ecc.layout->oobfree;
+		uint32_t boffs = 0, woffs = ops->ooboffs;
+		size_t bytes = 0;
+
+		for(; free->length && len; free++, len -= bytes) {
+			/* Write request not from offset 0 ? */
+			if (unlikely(woffs)) {
+				if (woffs >= free->length) {
+					woffs -= free->length;
+					continue;
+				}
+				boffs = free->offset + woffs;
+				bytes = min_t(size_t, len,
+					      (free->length - woffs));
+				woffs = 0;
+			} else {
+				bytes = min_t(size_t, len, free->length);
+				boffs = free->offset;
+			}
+			memcpy(chip->oob_poi + woffs, oob, bytes);
+			oob += bytes;
+		}
+		return oob;
+	}
+	default:
+		BUG();
+	}
+	return NULL;
+}
+
+#define NOTALIGNED(x) (x & (mtd->writesize-1)) != 0
+
+/**
+ * nand_do_write_ops - [Internal] NAND write with ECC
+ * @mtd:	MTD device structure
+ * @to:		offset to write to
+ * @ops:	oob operations description structure
+ *
+ * NAND write with ECC
+ */
+static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
+			     struct mtd_oob_ops *ops)
+{
+	int chipnr, realpage, page, blockmask;
+	struct nand_chip *chip = mtd->priv;
+	uint32_t writelen = ops->len;
+	uint8_t *oob = ops->oobbuf;
+	uint8_t *buf = ops->datbuf;
+	int bytes = mtd->writesize;
+	int ret;
+
+	ops->retlen = 0;
 
-	/* Reset the chip. Some chips (like the Toshiba TC5832DC found
-	   in one of my DiskOnChip 2000 test units) will clear the whole
-	   data page too if we don't do this. I have no clue why, but
-	   I seem to have 'fixed' it in the doc2000 driver in
-	   August 1999.  dwmw2. */
-	this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+	/* reject writes, which are not page aligned */
+	if (NOTALIGNED(to) || NOTALIGNED(ops->len)) {
+		printk(KERN_NOTICE "nand_write: "
+		       "Attempt to write not page aligned data\n");
+		return -EINVAL;
+	}
+
+	if (!writelen)
+		return 0;
 
 	/* Check, if it is write protected */
 	if (nand_check_wp(mtd))
-		goto out;
+		return -EIO;
 
-	/* Invalidate the page cache, if we write to the cached page */
-	if (page == this->pagebuf)
-		this->pagebuf = -1;
-
-	if (NAND_MUST_PAD(this)) {
-		/* Write out desired data */
-		this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
-		/* prepad 0xff for partial programming */
-		this->write_buf(mtd, ffchars, column);
-		/* write data */
-		this->write_buf(mtd, buf, len);
-		/* postpad 0xff for partial programming */
-		this->write_buf(mtd, ffchars, mtd->oobsize - (len+column));
-	} else {
-		/* Write out desired data */
-		this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask);
-		/* write data */
-		this->write_buf(mtd, buf, len);
-	}
-	/* Send command to program the OOB data */
-	this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1);
+	chipnr = (int)(to >> chip->chip_shift);
+	chip->select_chip(mtd, chipnr);
 
-	status = this->waitfunc (mtd, this, FL_WRITING);
+	realpage = (int)(to >> chip->page_shift);
+	page = realpage & chip->pagemask;
+	blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
 
-	/* See if device thinks it succeeded */
-	if (status & NAND_STATUS_FAIL) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write, page 0x%08x\n", page);
-		ret = -EIO;
-		goto out;
-	}
-	/* Return happy */
-	*retlen = len;
+	/* Invalidate the page cache, when we write to the cached page */
+	if (to <= (chip->pagebuf << chip->page_shift) &&
+	    (chip->pagebuf << chip->page_shift) < (to + ops->len))
+		chip->pagebuf = -1;
 
-#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
-	/* Send command to read back the data */
-	this->cmdfunc (mtd, NAND_CMD_READOOB, column, page & this->pagemask);
+	chip->oob_poi = chip->buffers.oobwbuf;
 
-	if (this->verify_buf(mtd, buf, len)) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write verify, page 0x%08x\n", page);
-		ret = -EIO;
-		goto out;
+	while(1) {
+		int cached = writelen > bytes && page != blockmask;
+
+		if (unlikely(oob))
+			oob = nand_fill_oob(chip, oob, ops);
+
+		ret = nand_write_page(mtd, chip, buf, page, cached);
+		if (ret)
+			break;
+
+		writelen -= bytes;
+		if (!writelen)
+			break;
+
+		buf += bytes;
+		realpage++;
+
+		page = realpage & chip->pagemask;
+		/* Check, if we cross a chip boundary */
+		if (!page) {
+			chipnr++;
+			chip->select_chip(mtd, -1);
+			chip->select_chip(mtd, chipnr);
+		}
 	}
-#endif
-	ret = 0;
-out:
-	/* Deselect and wake up anyone waiting on the device */
-	nand_release_device(mtd);
 
+	if (unlikely(oob))
+		memset(chip->oob_poi, 0xff, mtd->oobsize);
+
+	ops->retlen = ops->len - writelen;
 	return ret;
 }
 
-
 /**
- * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc
+ * nand_write - [MTD Interface] NAND write with ECC
  * @mtd:	MTD device structure
- * @vecs:	the iovectors to write
- * @count:	number of vectors
  * @to:		offset to write to
+ * @len:	number of bytes to write
  * @retlen:	pointer to variable to store the number of written bytes
+ * @buf:	the data to write
  *
- * NAND write with kvec. This just calls the ecc function
+ * NAND write with ECC
  */
-static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
-		loff_t to, size_t * retlen)
+static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
+			  size_t *retlen, const uint8_t *buf)
 {
-	return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL));
+	struct nand_chip *chip = mtd->priv;
+	int ret;
+
+	/* Do not allow reads past end of device */
+	if ((to + len) > mtd->size)
+		return -EINVAL;
+	if (!len)
+		return 0;
+
+	nand_get_device(chip, mtd, FL_WRITING);
+
+	chip->ops.len = len;
+	chip->ops.datbuf = (uint8_t *)buf;
+	chip->ops.oobbuf = NULL;
+
+	ret = nand_do_write_ops(mtd, to, &chip->ops);
+
+	nand_release_device(mtd);
+
+	*retlen = chip->ops.retlen;
+	return ret;
 }
 
 /**
- * nand_writev_ecc - [MTD Interface] write with iovec with ecc
+ * nand_do_write_oob - [MTD Interface] NAND write out-of-band
  * @mtd:	MTD device structure
- * @vecs:	the iovectors to write
- * @count:	number of vectors
  * @to:		offset to write to
- * @retlen:	pointer to variable to store the number of written bytes
- * @eccbuf:	filesystem supplied oob data buffer
- * @oobsel:	oob selection structure
+ * @ops:	oob operation description structure
  *
- * NAND write with iovec with ecc
+ * NAND write out-of-band
  */
-static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
-		loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+			     struct mtd_oob_ops *ops)
 {
-	int i, page, len, total_len, ret = -EIO, written = 0, chipnr;
-	int oob, numpages, autoplace = 0, startpage;
-	struct nand_chip *this = mtd->priv;
-	int	ppblock = (1 << (this->phys_erase_shift - this->page_shift));
-	u_char *oobbuf, *bufstart;
+	int chipnr, page, status;
+	struct nand_chip *chip = mtd->priv;
 
-	/* Preset written len for early exit */
-	*retlen = 0;
-
-	/* Calculate total length of data */
-	total_len = 0;
-	for (i = 0; i < count; i++)
-		total_len += (int) vecs[i].iov_len;
-
-	DEBUG (MTD_DEBUG_LEVEL3,
-	       "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count);
+	DEBUG(MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n",
+	      (unsigned int)to, (int)ops->len);
 
 	/* Do not allow write past end of page */
-	if ((to + total_len) > mtd->size) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n");
+	if ((ops->ooboffs + ops->len) > mtd->oobsize) {
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_write_oob: "
+		      "Attempt to write past end of page\n");
 		return -EINVAL;
 	}
 
-	/* reject writes, which are not page aligned */
-	if (NOTALIGNED (to) || NOTALIGNED(total_len)) {
-		printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
-		return -EINVAL;
-	}
+	chipnr = (int)(to >> chip->chip_shift);
+	chip->select_chip(mtd, chipnr);
 
-	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd, FL_WRITING);
+	/* Shift to get page */
+	page = (int)(to >> chip->page_shift);
 
-	/* Get the current chip-nr */
-	chipnr = (int) (to >> this->chip_shift);
-	/* Select the NAND device */
-	this->select_chip(mtd, chipnr);
+	/*
+	 * Reset the chip. Some chips (like the Toshiba TC5832DC found in one
+	 * of my DiskOnChip 2000 test units) will clear the whole data page too
+	 * if we don't do this. I have no clue why, but I seem to have 'fixed'
+	 * it in the doc2000 driver in August 1999.  dwmw2.
+	 */
+	chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
 
 	/* Check, if it is write protected */
 	if (nand_check_wp(mtd))
-		goto out;
+		return -EROFS;
 
-	/* if oobsel is NULL, use chip defaults */
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
+	/* Invalidate the page cache, if we write to the cached page */
+	if (page == chip->pagebuf)
+		chip->pagebuf = -1;
 
-	/* Autoplace of oob data ? Use the default placement scheme */
-	if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) {
-		oobsel = this->autooob;
-		autoplace = 1;
-	}
-	if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
-		autoplace = 1;
+	chip->oob_poi = chip->buffers.oobwbuf;
+	memset(chip->oob_poi, 0xff, mtd->oobsize);
+	nand_fill_oob(chip, ops->oobbuf, ops);
+	status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask);
+	memset(chip->oob_poi, 0xff, mtd->oobsize);
 
-	/* Setup start page */
-	page = (int) (to >> this->page_shift);
-	/* Invalidate the page cache, if we write to the cached page */
-	if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift))
-		this->pagebuf = -1;
+	if (status)
+		return status;
 
-	startpage = page & this->pagemask;
+	ops->retlen = ops->len;
 
-	/* Loop until all kvec' data has been written */
-	len = 0;
-	while (count) {
-		/* If the given tuple is >= pagesize then
-		 * write it out from the iov
-		 */
-		if ((vecs->iov_len - len) >= mtd->oobblock) {
-			/* Calc number of pages we can write
-			 * out of this iov in one go */
-			numpages = (vecs->iov_len - len) >> this->page_shift;
-			/* Do not cross block boundaries */
-			numpages = min (ppblock - (startpage & (ppblock - 1)), numpages);
-			oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages);
-			bufstart = (u_char *)vecs->iov_base;
-			bufstart += len;
-			this->data_poi = bufstart;
-			oob = 0;
-			for (i = 1; i <= numpages; i++) {
-				/* Write one page. If this is the last page to write
-				 * then use the real pageprogram command, else select
-				 * cached programming if supported by the chip.
-				 */
-				ret = nand_write_page (mtd, this, page & this->pagemask,
-					&oobbuf[oob], oobsel, i != numpages);
-				if (ret)
-					goto out;
-				this->data_poi += mtd->oobblock;
-				len += mtd->oobblock;
-				oob += mtd->oobsize;
-				page++;
-			}
-			/* Check, if we have to switch to the next tuple */
-			if (len >= (int) vecs->iov_len) {
-				vecs++;
-				len = 0;
-				count--;
-			}
-		} else {
-			/* We must use the internal buffer, read data out of each
-			 * tuple until we have a full page to write
-			 */
-			int cnt = 0;
-			while (cnt < mtd->oobblock) {
-				if (vecs->iov_base != NULL && vecs->iov_len)
-					this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];
-				/* Check, if we have to switch to the next tuple */
-				if (len >= (int) vecs->iov_len) {
-					vecs++;
-					len = 0;
-					count--;
-				}
-			}
-			this->pagebuf = page;
-			this->data_poi = this->data_buf;
-			bufstart = this->data_poi;
-			numpages = 1;
-			oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages);
-			ret = nand_write_page (mtd, this, page & this->pagemask,
-				oobbuf, oobsel, 0);
-			if (ret)
-				goto out;
-			page++;
-		}
+	return 0;
+}
 
-		this->data_poi = bufstart;
-		ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0);
-		if (ret)
-			goto out;
+/**
+ * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band
+ * @mtd:	MTD device structure
+ * @from:	offset to read from
+ * @ops:	oob operation description structure
+ */
+static int nand_write_oob(struct mtd_info *mtd, loff_t to,
+			  struct mtd_oob_ops *ops)
+{
+	void (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
+			  const uint8_t *buf) = NULL;
+	struct nand_chip *chip = mtd->priv;
+	int ret = -ENOTSUPP;
 
-		written += mtd->oobblock * numpages;
-		/* All done ? */
-		if (!count)
-			break;
+	ops->retlen = 0;
 
-		startpage = page & this->pagemask;
-		/* Check, if we cross a chip boundary */
-		if (!startpage) {
-			chipnr++;
-			this->select_chip(mtd, -1);
-			this->select_chip(mtd, chipnr);
-		}
+	/* Do not allow writes past end of device */
+	if ((to + ops->len) > mtd->size) {
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: "
+		      "Attempt read beyond end of device\n");
+		return -EINVAL;
 	}
-	ret = 0;
-out:
-	/* Deselect and wake up anyone waiting on the device */
-	nand_release_device(mtd);
 
-	*retlen = written;
+	nand_get_device(chip, mtd, FL_WRITING);
+
+	switch(ops->mode) {
+	case MTD_OOB_PLACE:
+	case MTD_OOB_AUTO:
+		break;
+
+	case MTD_OOB_RAW:
+		/* Replace the write_page algorithm temporary */
+		write_page = chip->ecc.write_page;
+		chip->ecc.write_page = nand_write_page_raw;
+		break;
+
+	default:
+		goto out;
+	}
+
+	if (!ops->datbuf)
+		ret = nand_do_write_oob(mtd, to, ops);
+	else
+		ret = nand_do_write_ops(mtd, to, ops);
+
+	if (unlikely(ops->mode == MTD_OOB_RAW))
+		chip->ecc.write_page = write_page;
+ out:
+	nand_release_device(mtd);
 	return ret;
 }
 
@@ -2050,12 +1816,12 @@ out:
  *
  * Standard erase command for NAND chips
  */
-static void single_erase_cmd (struct mtd_info *mtd, int page)
+static void single_erase_cmd(struct mtd_info *mtd, int page)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	/* Send commands to erase a block */
-	this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page);
-	this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
 }
 
 /**
@@ -2066,15 +1832,15 @@ static void single_erase_cmd (struct mtd_info *mtd, int page)
  * AND multi block erase command function
  * Erase 4 consecutive blocks
  */
-static void multi_erase_cmd (struct mtd_info *mtd, int page)
+static void multi_erase_cmd(struct mtd_info *mtd, int page)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	/* Send commands to erase a block */
-	this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++);
-	this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++);
-	this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++);
-	this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page);
-	this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
+	chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
 }
 
 /**
@@ -2084,79 +1850,82 @@ static void multi_erase_cmd (struct mtd_info *mtd, int page)
  *
  * Erase one ore more blocks
  */
-static int nand_erase (struct mtd_info *mtd, struct erase_info *instr)
+static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
-	return nand_erase_nand (mtd, instr, 0);
+	return nand_erase_nand(mtd, instr, 0);
 }
 
 #define BBT_PAGE_MASK	0xffffff3f
 /**
- * nand_erase_intern - [NAND Interface] erase block(s)
+ * nand_erase_nand - [Internal] erase block(s)
  * @mtd:	MTD device structure
  * @instr:	erase instruction
  * @allowbbt:	allow erasing the bbt area
  *
  * Erase one ore more blocks
  */
-int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt)
+int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
+		    int allowbbt)
 {
 	int page, len, status, pages_per_block, ret, chipnr;
-	struct nand_chip *this = mtd->priv;
-	int rewrite_bbt[NAND_MAX_CHIPS]={0};	/* flags to indicate the page, if bbt needs to be rewritten. */
-	unsigned int bbt_masked_page;		/* bbt mask to compare to page being erased. */
-						/* It is used to see if the current page is in the same */
-						/*   256 block group and the same bank as the bbt. */
+	struct nand_chip *chip = mtd->priv;
+	int rewrite_bbt[NAND_MAX_CHIPS]={0};
+	unsigned int bbt_masked_page = 0xffffffff;
 
-	DEBUG (MTD_DEBUG_LEVEL3,
-	       "nand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len);
+	DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n",
+	      (unsigned int)instr->addr, (unsigned int)instr->len);
 
 	/* Start address must align on block boundary */
-	if (instr->addr & ((1 << this->phys_erase_shift) - 1)) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n");
+	if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) {
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n");
 		return -EINVAL;
 	}
 
 	/* Length must align on block boundary */
-	if (instr->len & ((1 << this->phys_erase_shift) - 1)) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Length not block aligned\n");
+	if (instr->len & ((1 << chip->phys_erase_shift) - 1)) {
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: "
+		      "Length not block aligned\n");
 		return -EINVAL;
 	}
 
 	/* Do not allow erase past end of device */
 	if ((instr->len + instr->addr) > mtd->size) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Erase past end of device\n");
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: "
+		      "Erase past end of device\n");
 		return -EINVAL;
 	}
 
 	instr->fail_addr = 0xffffffff;
 
 	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd, FL_ERASING);
+	nand_get_device(chip, mtd, FL_ERASING);
 
 	/* Shift to get first page */
-	page = (int) (instr->addr >> this->page_shift);
-	chipnr = (int) (instr->addr >> this->chip_shift);
+	page = (int)(instr->addr >> chip->page_shift);
+	chipnr = (int)(instr->addr >> chip->chip_shift);
 
 	/* Calculate pages in each block */
-	pages_per_block = 1 << (this->phys_erase_shift - this->page_shift);
+	pages_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
 
 	/* Select the NAND device */
-	this->select_chip(mtd, chipnr);
+	chip->select_chip(mtd, chipnr);
 
-	/* Check the WP bit */
 	/* Check, if it is write protected */
 	if (nand_check_wp(mtd)) {
-		DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Device is write protected!!!\n");
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: "
+		      "Device is write protected!!!\n");
 		instr->state = MTD_ERASE_FAILED;
 		goto erase_exit;
 	}
 
-	/* if BBT requires refresh, set the BBT page mask to see if the BBT should be rewritten */
-	if (this->options & BBT_AUTO_REFRESH) {
-		bbt_masked_page = this->bbt_td->pages[chipnr] & BBT_PAGE_MASK;
-	} else {
-		bbt_masked_page = 0xffffffff;	/* should not match anything */
-	}
+	/*
+	 * If BBT requires refresh, set the BBT page mask to see if the BBT
+	 * should be rewritten. Otherwise the mask is set to 0xffffffff which
+	 * can not be matched. This is also done when the bbt is actually
+	 * erased to avoid recusrsive updates
+	 */
+	if (chip->options & BBT_AUTO_REFRESH && !allowbbt)
+		bbt_masked_page = chip->bbt_td->pages[chipnr] & BBT_PAGE_MASK;
 
 	/* Loop through the pages */
 	len = instr->len;
@@ -2164,64 +1933,77 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
 	instr->state = MTD_ERASING;
 
 	while (len) {
-		/* Check if we have a bad block, we do not erase bad blocks ! */
-		if (nand_block_checkbad(mtd, ((loff_t) page) << this->page_shift, 0, allowbbt)) {
-			printk (KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page);
+		/*
+		 * heck if we have a bad block, we do not erase bad blocks !
+		 */
+		if (nand_block_checkbad(mtd, ((loff_t) page) <<
+					chip->page_shift, 0, allowbbt)) {
+			printk(KERN_WARNING "nand_erase: attempt to erase a "
+			       "bad block at page 0x%08x\n", page);
 			instr->state = MTD_ERASE_FAILED;
 			goto erase_exit;
 		}
 
-		/* Invalidate the page cache, if we erase the block which contains
-		   the current cached page */
-		if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block))
-			this->pagebuf = -1;
+		/*
+		 * Invalidate the page cache, if we erase the block which
+		 * contains the current cached page
+		 */
+		if (page <= chip->pagebuf && chip->pagebuf <
+		    (page + pages_per_block))
+			chip->pagebuf = -1;
 
-		this->erase_cmd (mtd, page & this->pagemask);
+		chip->erase_cmd(mtd, page & chip->pagemask);
 
-		status = this->waitfunc (mtd, this, FL_ERASING);
+		status = chip->waitfunc(mtd, chip);
 
-		/* See if operation failed and additional status checks are available */
-		if ((status & NAND_STATUS_FAIL) && (this->errstat)) {
-			status = this->errstat(mtd, this, FL_ERASING, status, page);
-		}
+		/*
+		 * See if operation failed and additional status checks are
+		 * available
+		 */
+		if ((status & NAND_STATUS_FAIL) && (chip->errstat))
+			status = chip->errstat(mtd, chip, FL_ERASING,
+					       status, page);
 
 		/* See if block erase succeeded */
 		if (status & NAND_STATUS_FAIL) {
-			DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: " "Failed erase, page 0x%08x\n", page);
+			DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: "
+			      "Failed erase, page 0x%08x\n", page);
 			instr->state = MTD_ERASE_FAILED;
-			instr->fail_addr = (page << this->page_shift);
+			instr->fail_addr = (page << chip->page_shift);
 			goto erase_exit;
 		}
 
-		/* if BBT requires refresh, set the BBT rewrite flag to the page being erased */
-		if (this->options & BBT_AUTO_REFRESH) {
-			if (((page & BBT_PAGE_MASK) == bbt_masked_page) &&
-			     (page != this->bbt_td->pages[chipnr])) {
-				rewrite_bbt[chipnr] = (page << this->page_shift);
-			}
-		}
+		/*
+		 * If BBT requires refresh, set the BBT rewrite flag to the
+		 * page being erased
+		 */
+		if (bbt_masked_page != 0xffffffff &&
+		    (page & BBT_PAGE_MASK) == bbt_masked_page)
+			    rewrite_bbt[chipnr] = (page << chip->page_shift);
 
 		/* Increment page address and decrement length */
-		len -= (1 << this->phys_erase_shift);
+		len -= (1 << chip->phys_erase_shift);
 		page += pages_per_block;
 
 		/* Check, if we cross a chip boundary */
-		if (len && !(page & this->pagemask)) {
+		if (len && !(page & chip->pagemask)) {
 			chipnr++;
-			this->select_chip(mtd, -1);
-			this->select_chip(mtd, chipnr);
-
-			/* if BBT requires refresh and BBT-PERCHIP,
-			 *   set the BBT page mask to see if this BBT should be rewritten */
-			if ((this->options & BBT_AUTO_REFRESH) && (this->bbt_td->options & NAND_BBT_PERCHIP)) {
-				bbt_masked_page = this->bbt_td->pages[chipnr] & BBT_PAGE_MASK;
-			}
+			chip->select_chip(mtd, -1);
+			chip->select_chip(mtd, chipnr);
 
+			/*
+			 * If BBT requires refresh and BBT-PERCHIP, set the BBT
+			 * page mask to see if this BBT should be rewritten
+			 */
+			if (bbt_masked_page != 0xffffffff &&
+			    (chip->bbt_td->options & NAND_BBT_PERCHIP))
+				bbt_masked_page = chip->bbt_td->pages[chipnr] &
+					BBT_PAGE_MASK;
 		}
 	}
 	instr->state = MTD_ERASE_DONE;
 
-erase_exit:
+ erase_exit:
 
 	ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
 	/* Do call back function */
@@ -2231,16 +2013,21 @@ erase_exit:
 	/* Deselect and wake up anyone waiting on the device */
 	nand_release_device(mtd);
 
-	/* if BBT requires refresh and erase was successful, rewrite any selected bad block tables */
-	if ((this->options & BBT_AUTO_REFRESH) && (!ret)) {
-		for (chipnr = 0; chipnr < this->numchips; chipnr++) {
-			if (rewrite_bbt[chipnr]) {
-				/* update the BBT for chip */
-				DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n",
-					chipnr, rewrite_bbt[chipnr], this->bbt_td->pages[chipnr]);
-				nand_update_bbt (mtd, rewrite_bbt[chipnr]);
-			}
-		}
+	/*
+	 * If BBT requires refresh and erase was successful, rewrite any
+	 * selected bad block tables
+	 */
+	if (bbt_masked_page == 0xffffffff || ret)
+		return ret;
+
+	for (chipnr = 0; chipnr < chip->numchips; chipnr++) {
+		if (!rewrite_bbt[chipnr])
+			continue;
+		/* update the BBT for chip */
+		DEBUG(MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt "
+		      "(%d:0x%0x 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
+		      chip->bbt_td->pages[chipnr]);
+		nand_update_bbt(mtd, rewrite_bbt[chipnr]);
 	}
 
 	/* Return more or less happy */
@@ -2253,51 +2040,50 @@ erase_exit:
  *
  * Sync is actually a wait for chip ready function
  */
-static void nand_sync (struct mtd_info *mtd)
+static void nand_sync(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	DEBUG (MTD_DEBUG_LEVEL3, "nand_sync: called\n");
+	DEBUG(MTD_DEBUG_LEVEL3, "nand_sync: called\n");
 
 	/* Grab the lock and see if the device is available */
-	nand_get_device (this, mtd, FL_SYNCING);
+	nand_get_device(chip, mtd, FL_SYNCING);
 	/* Release it and go back */
-	nand_release_device (mtd);
+	nand_release_device(mtd);
 }
 
-
 /**
- * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad
+ * nand_block_isbad - [MTD Interface] Check if block at offset is bad
  * @mtd:	MTD device structure
  * @ofs:	offset relative to mtd start
  */
-static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs)
+static int nand_block_isbad(struct mtd_info *mtd, loff_t offs)
 {
 	/* Check for invalid offset */
-	if (ofs > mtd->size)
+	if (offs > mtd->size)
 		return -EINVAL;
 
-	return nand_block_checkbad (mtd, ofs, 1, 0);
+	return nand_block_checkbad(mtd, offs, 1, 0);
 }
 
 /**
- * nand_block_markbad - [MTD Interface] Mark the block at the given offset as bad
+ * nand_block_markbad - [MTD Interface] Mark block at the given offset as bad
  * @mtd:	MTD device structure
  * @ofs:	offset relative to mtd start
  */
-static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs)
+static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 	int ret;
 
-        if ((ret = nand_block_isbad(mtd, ofs))) {
-        	/* If it was bad already, return success and do nothing. */
+	if ((ret = nand_block_isbad(mtd, ofs))) {
+		/* If it was bad already, return success and do nothing. */
 		if (ret > 0)
 			return 0;
-        	return ret;
-        }
+		return ret;
+	}
 
-	return this->block_markbad(mtd, ofs);
+	return chip->block_markbad(mtd, ofs);
 }
 
 /**
@@ -2306,9 +2092,9 @@ static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs)
  */
 static int nand_suspend(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	return nand_get_device (this, mtd, FL_PM_SUSPENDED);
+	return nand_get_device(chip, mtd, FL_PM_SUSPENDED);
 }
 
 /**
@@ -2317,373 +2103,385 @@ static int nand_suspend(struct mtd_info *mtd)
  */
 static void nand_resume(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
-	if (this->state == FL_PM_SUSPENDED)
+	if (chip->state == FL_PM_SUSPENDED)
 		nand_release_device(mtd);
 	else
-		printk(KERN_ERR "resume() called for the chip which is not "
-				"in suspended state\n");
-
+		printk(KERN_ERR "nand_resume() called for a chip which is not "
+		       "in suspended state\n");
 }
 
-
-/**
- * nand_scan - [NAND Interface] Scan for the NAND device
- * @mtd:	MTD device structure
- * @maxchips:	Number of chips to scan for
- *
- * This fills out all the not initialized function pointers
- * with the defaults.
- * The flash ID is read and the mtd/chip structures are
- * filled with the appropriate values. Buffers are allocated if
- * they are not provided by the board driver
- *
+/*
+ * Set default functions
  */
-int nand_scan (struct mtd_info *mtd, int maxchips)
+static void nand_set_defaults(struct nand_chip *chip, int busw)
 {
-	int i, nand_maf_id, nand_dev_id, busw, maf_id;
-	struct nand_chip *this = mtd->priv;
-
-	/* Get buswidth to select the correct functions*/
-	busw = this->options & NAND_BUSWIDTH_16;
-
 	/* check for proper chip_delay setup, set 20us if not */
-	if (!this->chip_delay)
-		this->chip_delay = 20;
+	if (!chip->chip_delay)
+		chip->chip_delay = 20;
 
 	/* check, if a user supplied command function given */
-	if (this->cmdfunc == NULL)
-		this->cmdfunc = nand_command;
+	if (chip->cmdfunc == NULL)
+		chip->cmdfunc = nand_command;
 
 	/* check, if a user supplied wait function given */
-	if (this->waitfunc == NULL)
-		this->waitfunc = nand_wait;
-
-	if (!this->select_chip)
-		this->select_chip = nand_select_chip;
-	if (!this->write_byte)
-		this->write_byte = busw ? nand_write_byte16 : nand_write_byte;
-	if (!this->read_byte)
-		this->read_byte = busw ? nand_read_byte16 : nand_read_byte;
-	if (!this->write_word)
-		this->write_word = nand_write_word;
-	if (!this->read_word)
-		this->read_word = nand_read_word;
-	if (!this->block_bad)
-		this->block_bad = nand_block_bad;
-	if (!this->block_markbad)
-		this->block_markbad = nand_default_block_markbad;
-	if (!this->write_buf)
-		this->write_buf = busw ? nand_write_buf16 : nand_write_buf;
-	if (!this->read_buf)
-		this->read_buf = busw ? nand_read_buf16 : nand_read_buf;
-	if (!this->verify_buf)
-		this->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf;
-	if (!this->scan_bbt)
-		this->scan_bbt = nand_default_bbt;
+	if (chip->waitfunc == NULL)
+		chip->waitfunc = nand_wait;
+
+	if (!chip->select_chip)
+		chip->select_chip = nand_select_chip;
+	if (!chip->read_byte)
+		chip->read_byte = busw ? nand_read_byte16 : nand_read_byte;
+	if (!chip->read_word)
+		chip->read_word = nand_read_word;
+	if (!chip->block_bad)
+		chip->block_bad = nand_block_bad;
+	if (!chip->block_markbad)
+		chip->block_markbad = nand_default_block_markbad;
+	if (!chip->write_buf)
+		chip->write_buf = busw ? nand_write_buf16 : nand_write_buf;
+	if (!chip->read_buf)
+		chip->read_buf = busw ? nand_read_buf16 : nand_read_buf;
+	if (!chip->verify_buf)
+		chip->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf;
+	if (!chip->scan_bbt)
+		chip->scan_bbt = nand_default_bbt;
+
+	if (!chip->controller) {
+		chip->controller = &chip->hwcontrol;
+		spin_lock_init(&chip->controller->lock);
+		init_waitqueue_head(&chip->controller->wq);
+	}
+
+}
+
+/*
+ * Get the flash and manufacturer id and lookup if the type is supported
+ */
+static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+						  struct nand_chip *chip,
+						  int busw, int *maf_id)
+{
+	struct nand_flash_dev *type = NULL;
+	int i, dev_id, maf_idx;
 
 	/* Select the device */
-	this->select_chip(mtd, 0);
+	chip->select_chip(mtd, 0);
 
 	/* Send the command for reading device ID */
-	this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1);
+	chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
 
 	/* Read manufacturer and device IDs */
-	nand_maf_id = this->read_byte(mtd);
-	nand_dev_id = this->read_byte(mtd);
+	*maf_id = chip->read_byte(mtd);
+	dev_id = chip->read_byte(mtd);
 
-	/* Print and store flash device information */
+	/* Lookup the flash id */
 	for (i = 0; nand_flash_ids[i].name != NULL; i++) {
+		if (dev_id == nand_flash_ids[i].id) {
+			type =  &nand_flash_ids[i];
+			break;
+		}
+	}
 
-		if (nand_dev_id != nand_flash_ids[i].id)
-			continue;
+	if (!type)
+		return ERR_PTR(-ENODEV);
+
+	if (!mtd->name)
+		mtd->name = type->name;
+
+	chip->chipsize = type->chipsize << 20;
+
+	/* Newer devices have all the information in additional id bytes */
+	if (!type->pagesize) {
+		int extid;
+		/* The 3rd id byte contains non relevant data ATM */
+		extid = chip->read_byte(mtd);
+		/* The 4th id byte is the important one */
+		extid = chip->read_byte(mtd);
+		/* Calc pagesize */
+		mtd->writesize = 1024 << (extid & 0x3);
+		extid >>= 2;
+		/* Calc oobsize */
+		mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9);
+		extid >>= 2;
+		/* Calc blocksize. Blocksize is multiples of 64KiB */
+		mtd->erasesize = (64 * 1024) << (extid & 0x03);
+		extid >>= 2;
+		/* Get buswidth information */
+		busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
 
-		if (!mtd->name) mtd->name = nand_flash_ids[i].name;
-		this->chipsize = nand_flash_ids[i].chipsize << 20;
-
-		/* New devices have all the information in additional id bytes */
-		if (!nand_flash_ids[i].pagesize) {
-			int extid;
-			/* The 3rd id byte contains non relevant data ATM */
-			extid = this->read_byte(mtd);
-			/* The 4th id byte is the important one */
-			extid = this->read_byte(mtd);
-			/* Calc pagesize */
-			mtd->oobblock = 1024 << (extid & 0x3);
-			extid >>= 2;
-			/* Calc oobsize */
-			mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9);
-			extid >>= 2;
-			/* Calc blocksize. Blocksize is multiples of 64KiB */
-			mtd->erasesize = (64 * 1024)  << (extid & 0x03);
-			extid >>= 2;
-			/* Get buswidth information */
-			busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
+	} else {
+		/*
+		 * Old devices have chip data hardcoded in the device id table
+		 */
+		mtd->erasesize = type->erasesize;
+		mtd->writesize = type->pagesize;
+		mtd->oobsize = mtd->writesize / 32;
+		busw = type->options & NAND_BUSWIDTH_16;
+	}
 
-		} else {
-			/* Old devices have this data hardcoded in the
-			 * device id table */
-			mtd->erasesize = nand_flash_ids[i].erasesize;
-			mtd->oobblock = nand_flash_ids[i].pagesize;
-			mtd->oobsize = mtd->oobblock / 32;
-			busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16;
-		}
+	/* Try to identify manufacturer */
+	for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_id++) {
+		if (nand_manuf_ids[maf_idx].id == *maf_id)
+			break;
+	}
 
-		/* Try to identify manufacturer */
-		for (maf_id = 0; nand_manuf_ids[maf_id].id != 0x0; maf_id++) {
-			if (nand_manuf_ids[maf_id].id == nand_maf_id)
-				break;
-		}
+	/*
+	 * Check, if buswidth is correct. Hardware drivers should set
+	 * chip correct !
+	 */
+	if (busw != (chip->options & NAND_BUSWIDTH_16)) {
+		printk(KERN_INFO "NAND device: Manufacturer ID:"
+		       " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id,
+		       dev_id, nand_manuf_ids[maf_idx].name, mtd->name);
+		printk(KERN_WARNING "NAND bus width %d instead %d bit\n",
+		       (chip->options & NAND_BUSWIDTH_16) ? 16 : 8,
+		       busw ? 16 : 8);
+		return ERR_PTR(-EINVAL);
+	}
 
-		/* Check, if buswidth is correct. Hardware drivers should set
-		 * this correct ! */
-		if (busw != (this->options & NAND_BUSWIDTH_16)) {
-			printk (KERN_INFO "NAND device: Manufacturer ID:"
-				" 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
-				nand_manuf_ids[maf_id].name , mtd->name);
-			printk (KERN_WARNING
-				"NAND bus width %d instead %d bit\n",
-					(this->options & NAND_BUSWIDTH_16) ? 16 : 8,
-					busw ? 16 : 8);
-			this->select_chip(mtd, -1);
-			return 1;
-		}
+	/* Calculate the address shift from the page size */
+	chip->page_shift = ffs(mtd->writesize) - 1;
+	/* Convert chipsize to number of pages per chip -1. */
+	chip->pagemask = (chip->chipsize >> chip->page_shift) - 1;
 
-		/* Calculate the address shift from the page size */
-		this->page_shift = ffs(mtd->oobblock) - 1;
-		this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1;
-		this->chip_shift = ffs(this->chipsize) - 1;
-
-		/* Set the bad block position */
-		this->badblockpos = mtd->oobblock > 512 ?
-			NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
-
-		/* Get chip options, preserve non chip based options */
-		this->options &= ~NAND_CHIPOPTIONS_MSK;
-		this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK;
-		/* Set this as a default. Board drivers can override it, if neccecary */
-		this->options |= NAND_NO_AUTOINCR;
-		/* Check if this is a not a samsung device. Do not clear the options
-		 * for chips which are not having an extended id.
-		 */
-		if (nand_maf_id != NAND_MFR_SAMSUNG && !nand_flash_ids[i].pagesize)
-			this->options &= ~NAND_SAMSUNG_LP_OPTIONS;
+	chip->bbt_erase_shift = chip->phys_erase_shift =
+		ffs(mtd->erasesize) - 1;
+	chip->chip_shift = ffs(chip->chipsize) - 1;
 
-		/* Check for AND chips with 4 page planes */
-		if (this->options & NAND_4PAGE_ARRAY)
-			this->erase_cmd = multi_erase_cmd;
-		else
-			this->erase_cmd = single_erase_cmd;
+	/* Set the bad block position */
+	chip->badblockpos = mtd->writesize > 512 ?
+		NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
 
-		/* Do not replace user supplied command function ! */
-		if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
-			this->cmdfunc = nand_command_lp;
+	/* Get chip options, preserve non chip based options */
+	chip->options &= ~NAND_CHIPOPTIONS_MSK;
+	chip->options |= type->options & NAND_CHIPOPTIONS_MSK;
 
-		printk (KERN_INFO "NAND device: Manufacturer ID:"
-			" 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
-			nand_manuf_ids[maf_id].name , nand_flash_ids[i].name);
-		break;
-	}
+	/*
+	 * Set chip as a default. Board drivers can override it, if necessary
+	 */
+	chip->options |= NAND_NO_AUTOINCR;
+
+	/* Check if chip is a not a samsung device. Do not clear the
+	 * options for chips which are not having an extended id.
+	 */
+	if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize)
+		chip->options &= ~NAND_SAMSUNG_LP_OPTIONS;
+
+	/* Check for AND chips with 4 page planes */
+	if (chip->options & NAND_4PAGE_ARRAY)
+		chip->erase_cmd = multi_erase_cmd;
+	else
+		chip->erase_cmd = single_erase_cmd;
+
+	/* Do not replace user supplied command function ! */
+	if (mtd->writesize > 512 && chip->cmdfunc == nand_command)
+		chip->cmdfunc = nand_command_lp;
+
+	printk(KERN_INFO "NAND device: Manufacturer ID:"
+	       " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, dev_id,
+	       nand_manuf_ids[maf_idx].name, type->name);
+
+	return type;
+}
+
+/* module_text_address() isn't exported, and it's mostly a pointless
+   test if this is a module _anyway_ -- they'd have to try _really_ hard
+   to call us from in-kernel code if the core NAND support is modular. */
+#ifdef MODULE
+#define caller_is_module() (1)
+#else
+#define caller_is_module() \
+	module_text_address((unsigned long)__builtin_return_address(0))
+#endif
+
+/**
+ * nand_scan - [NAND Interface] Scan for the NAND device
+ * @mtd:	MTD device structure
+ * @maxchips:	Number of chips to scan for
+ *
+ * This fills out all the uninitialized function pointers
+ * with the defaults.
+ * The flash ID is read and the mtd/chip structures are
+ * filled with the appropriate values.
+ * The mtd->owner field must be set to the module of the caller
+ *
+ */
+int nand_scan(struct mtd_info *mtd, int maxchips)
+{
+	int i, busw, nand_maf_id;
+	struct nand_chip *chip = mtd->priv;
+	struct nand_flash_dev *type;
 
-	if (!nand_flash_ids[i].name) {
-		printk (KERN_WARNING "No NAND device found!!!\n");
-		this->select_chip(mtd, -1);
-		return 1;
+	/* Many callers got this wrong, so check for it for a while... */
+	if (!mtd->owner && caller_is_module()) {
+		printk(KERN_CRIT "nand_scan() called with NULL mtd->owner!\n");
+		BUG();
 	}
 
-	for (i=1; i < maxchips; i++) {
-		this->select_chip(mtd, i);
+	/* Get buswidth to select the correct functions */
+	busw = chip->options & NAND_BUSWIDTH_16;
+	/* Set the default functions */
+	nand_set_defaults(chip, busw);
 
-		/* Send the command for reading device ID */
-		this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1);
+	/* Read the flash type */
+	type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id);
+
+	if (IS_ERR(type)) {
+		printk(KERN_WARNING "No NAND device found!!!\n");
+		chip->select_chip(mtd, -1);
+		return PTR_ERR(type);
+	}
 
+	/* Check for a chip array */
+	for (i = 1; i < maxchips; i++) {
+		chip->select_chip(mtd, i);
+		/* Send the command for reading device ID */
+		chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
 		/* Read manufacturer and device IDs */
-		if (nand_maf_id != this->read_byte(mtd) ||
-		    nand_dev_id != this->read_byte(mtd))
+		if (nand_maf_id != chip->read_byte(mtd) ||
+		    type->id != chip->read_byte(mtd))
 			break;
 	}
 	if (i > 1)
 		printk(KERN_INFO "%d NAND chips detected\n", i);
 
-	/* Allocate buffers, if neccecary */
-	if (!this->oob_buf) {
-		size_t len;
-		len = mtd->oobsize << (this->phys_erase_shift - this->page_shift);
-		this->oob_buf = kmalloc (len, GFP_KERNEL);
-		if (!this->oob_buf) {
-			printk (KERN_ERR "nand_scan(): Cannot allocate oob_buf\n");
-			return -ENOMEM;
-		}
-		this->options |= NAND_OOBBUF_ALLOC;
-	}
+	/* Store the number of chips and calc total size for mtd */
+	chip->numchips = i;
+	mtd->size = i * chip->chipsize;
 
-	if (!this->data_buf) {
-		size_t len;
-		len = mtd->oobblock + mtd->oobsize;
-		this->data_buf = kmalloc (len, GFP_KERNEL);
-		if (!this->data_buf) {
-			if (this->options & NAND_OOBBUF_ALLOC)
-				kfree (this->oob_buf);
-			printk (KERN_ERR "nand_scan(): Cannot allocate data_buf\n");
-			return -ENOMEM;
-		}
-		this->options |= NAND_DATABUF_ALLOC;
-	}
+	/* Preset the internal oob write buffer */
+	memset(chip->buffers.oobwbuf, 0xff, mtd->oobsize);
 
-	/* Store the number of chips and calc total size for mtd */
-	this->numchips = i;
-	mtd->size = i * this->chipsize;
-	/* Convert chipsize to number of pages per chip -1. */
-	this->pagemask = (this->chipsize >> this->page_shift) - 1;
-	/* Preset the internal oob buffer */
-	memset(this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift));
-
-	/* If no default placement scheme is given, select an
-	 * appropriate one */
-	if (!this->autooob) {
-		/* Select the appropriate default oob placement scheme for
-		 * placement agnostic filesystems */
+	/*
+	 * If no default placement scheme is given, select an appropriate one
+	 */
+	if (!chip->ecc.layout) {
 		switch (mtd->oobsize) {
 		case 8:
-			this->autooob = &nand_oob_8;
+			chip->ecc.layout = &nand_oob_8;
 			break;
 		case 16:
-			this->autooob = &nand_oob_16;
+			chip->ecc.layout = &nand_oob_16;
 			break;
 		case 64:
-			this->autooob = &nand_oob_64;
+			chip->ecc.layout = &nand_oob_64;
 			break;
 		default:
-			printk (KERN_WARNING "No oob scheme defined for oobsize %d\n",
-				mtd->oobsize);
+			printk(KERN_WARNING "No oob scheme defined for "
+			       "oobsize %d\n", mtd->oobsize);
 			BUG();
 		}
 	}
 
-	/* The number of bytes available for the filesystem to place fs dependend
-	 * oob data */
-	mtd->oobavail = 0;
-	for (i = 0; this->autooob->oobfree[i][1]; i++)
-		mtd->oobavail += this->autooob->oobfree[i][1];
-
 	/*
-	 * check ECC mode, default to software
-	 * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize
-	 * fallback to software ECC
-	*/
-	this->eccsize = 256;	/* set default eccsize */
-	this->eccbytes = 3;
-
-	switch (this->eccmode) {
-	case NAND_ECC_HW12_2048:
-		if (mtd->oobblock < 2048) {
-			printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n",
-			       mtd->oobblock);
-			this->eccmode = NAND_ECC_SOFT;
-			this->calculate_ecc = nand_calculate_ecc;
-			this->correct_data = nand_correct_data;
-		} else
-			this->eccsize = 2048;
-		break;
-
-	case NAND_ECC_HW3_512:
-	case NAND_ECC_HW6_512:
-	case NAND_ECC_HW8_512:
-		if (mtd->oobblock == 256) {
-			printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n");
-			this->eccmode = NAND_ECC_SOFT;
-			this->calculate_ecc = nand_calculate_ecc;
-			this->correct_data = nand_correct_data;
-		} else
-			this->eccsize = 512; /* set eccsize to 512 */
-		break;
+	 * check ECC mode, default to software if 3byte/512byte hardware ECC is
+	 * selected and we have 256 byte pagesize fallback to software ECC
+	 */
+	switch (chip->ecc.mode) {
+	case NAND_ECC_HW:
+		/* Use standard hwecc read page function ? */
+		if (!chip->ecc.read_page)
+			chip->ecc.read_page = nand_read_page_hwecc;
+		if (!chip->ecc.write_page)
+			chip->ecc.write_page = nand_write_page_hwecc;
+		if (!chip->ecc.read_oob)
+			chip->ecc.read_oob = nand_read_oob_std;
+		if (!chip->ecc.write_oob)
+			chip->ecc.write_oob = nand_write_oob_std;
+
+	case NAND_ECC_HW_SYNDROME:
+		if (!chip->ecc.calculate || !chip->ecc.correct ||
+		    !chip->ecc.hwctl) {
+			printk(KERN_WARNING "No ECC functions supplied, "
+			       "Hardware ECC not possible\n");
+			BUG();
+		}
+		/* Use standard syndrome read/write page function ? */
+		if (!chip->ecc.read_page)
+			chip->ecc.read_page = nand_read_page_syndrome;
+		if (!chip->ecc.write_page)
+			chip->ecc.write_page = nand_write_page_syndrome;
+		if (!chip->ecc.read_oob)
+			chip->ecc.read_oob = nand_read_oob_syndrome;
+		if (!chip->ecc.write_oob)
+			chip->ecc.write_oob = nand_write_oob_syndrome;
+
+		if (mtd->writesize >= chip->ecc.size)
+			break;
+		printk(KERN_WARNING "%d byte HW ECC not possible on "
+		       "%d byte page size, fallback to SW ECC\n",
+		       chip->ecc.size, mtd->writesize);
+		chip->ecc.mode = NAND_ECC_SOFT;
 
-	case NAND_ECC_HW3_256:
+	case NAND_ECC_SOFT:
+		chip->ecc.calculate = nand_calculate_ecc;
+		chip->ecc.correct = nand_correct_data;
+		chip->ecc.read_page = nand_read_page_swecc;
+		chip->ecc.write_page = nand_write_page_swecc;
+		chip->ecc.read_oob = nand_read_oob_std;
+		chip->ecc.write_oob = nand_write_oob_std;
+		chip->ecc.size = 256;
+		chip->ecc.bytes = 3;
 		break;
 
 	case NAND_ECC_NONE:
-		printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n");
-		this->eccmode = NAND_ECC_NONE;
-		break;
-
-	case NAND_ECC_SOFT:
-		this->calculate_ecc = nand_calculate_ecc;
-		this->correct_data = nand_correct_data;
+		printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. "
+		       "This is not recommended !!\n");
+		chip->ecc.read_page = nand_read_page_raw;
+		chip->ecc.write_page = nand_write_page_raw;
+		chip->ecc.read_oob = nand_read_oob_std;
+		chip->ecc.write_oob = nand_write_oob_std;
+		chip->ecc.size = mtd->writesize;
+		chip->ecc.bytes = 0;
 		break;
-
 	default:
-		printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
+		printk(KERN_WARNING "Invalid NAND_ECC_MODE %d\n",
+		       chip->ecc.mode);
 		BUG();
 	}
 
-	/* Check hardware ecc function availability and adjust number of ecc bytes per
-	 * calculation step
-	*/
-	switch (this->eccmode) {
-	case NAND_ECC_HW12_2048:
-		this->eccbytes += 4;
-	case NAND_ECC_HW8_512:
-		this->eccbytes += 2;
-	case NAND_ECC_HW6_512:
-		this->eccbytes += 3;
-	case NAND_ECC_HW3_512:
-	case NAND_ECC_HW3_256:
-		if (this->calculate_ecc && this->correct_data && this->enable_hwecc)
-			break;
-		printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n");
-		BUG();
-	}
-
-	mtd->eccsize = this->eccsize;
-
-	/* Set the number of read / write steps for one page to ensure ECC generation */
-	switch (this->eccmode) {
-	case NAND_ECC_HW12_2048:
-		this->eccsteps = mtd->oobblock / 2048;
-		break;
-	case NAND_ECC_HW3_512:
-	case NAND_ECC_HW6_512:
-	case NAND_ECC_HW8_512:
-		this->eccsteps = mtd->oobblock / 512;
-		break;
-	case NAND_ECC_HW3_256:
-	case NAND_ECC_SOFT:
-		this->eccsteps = mtd->oobblock / 256;
-		break;
+	/*
+	 * The number of bytes available for a client to place data into
+	 * the out of band area
+	 */
+	chip->ecc.layout->oobavail = 0;
+	for (i = 0; chip->ecc.layout->oobfree[i].length; i++)
+		chip->ecc.layout->oobavail +=
+			chip->ecc.layout->oobfree[i].length;
 
-	case NAND_ECC_NONE:
-		this->eccsteps = 1;
-		break;
+	/*
+	 * Set the number of read / write steps for one page depending on ECC
+	 * mode
+	 */
+	chip->ecc.steps = mtd->writesize / chip->ecc.size;
+	if(chip->ecc.steps * chip->ecc.size != mtd->writesize) {
+		printk(KERN_WARNING "Invalid ecc parameters\n");
+		BUG();
 	}
+	chip->ecc.total = chip->ecc.steps * chip->ecc.bytes;
 
-	/* Initialize state, waitqueue and spinlock */
-	this->state = FL_READY;
-	init_waitqueue_head (&this->wq);
-	spin_lock_init (&this->chip_lock);
+	/* Initialize state */
+	chip->state = FL_READY;
 
 	/* De-select the device */
-	this->select_chip(mtd, -1);
+	chip->select_chip(mtd, -1);
 
 	/* Invalidate the pagebuffer reference */
-	this->pagebuf = -1;
+	chip->pagebuf = -1;
 
 	/* Fill in remaining MTD driver data */
 	mtd->type = MTD_NANDFLASH;
-	mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC;
+	mtd->flags = MTD_CAP_NANDFLASH;
 	mtd->ecctype = MTD_ECC_SW;
 	mtd->erase = nand_erase;
 	mtd->point = NULL;
 	mtd->unpoint = NULL;
 	mtd->read = nand_read;
 	mtd->write = nand_write;
-	mtd->read_ecc = nand_read_ecc;
-	mtd->write_ecc = nand_write_ecc;
 	mtd->read_oob = nand_read_oob;
 	mtd->write_oob = nand_write_oob;
-	mtd->readv = NULL;
-	mtd->writev = nand_writev;
-	mtd->writev_ecc = nand_writev_ecc;
 	mtd->sync = nand_sync;
 	mtd->lock = NULL;
 	mtd->unlock = NULL;
@@ -2692,47 +2490,38 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
 	mtd->block_isbad = nand_block_isbad;
 	mtd->block_markbad = nand_block_markbad;
 
-	/* and make the autooob the default one */
-	memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
-
-	mtd->owner = THIS_MODULE;
+	/* propagate ecc.layout to mtd_info */
+	mtd->ecclayout = chip->ecc.layout;
 
 	/* Check, if we should skip the bad block table scan */
-	if (this->options & NAND_SKIP_BBTSCAN)
+	if (chip->options & NAND_SKIP_BBTSCAN)
 		return 0;
 
 	/* Build bad block table */
-	return this->scan_bbt (mtd);
+	return chip->scan_bbt(mtd);
 }
 
 /**
  * nand_release - [NAND Interface] Free resources held by the NAND device
  * @mtd:	MTD device structure
 */
-void nand_release (struct mtd_info *mtd)
+void nand_release(struct mtd_info *mtd)
 {
-	struct nand_chip *this = mtd->priv;
+	struct nand_chip *chip = mtd->priv;
 
 #ifdef CONFIG_MTD_PARTITIONS
 	/* Deregister partitions */
-	del_mtd_partitions (mtd);
+	del_mtd_partitions(mtd);
 #endif
 	/* Deregister the device */
-	del_mtd_device (mtd);
+	del_mtd_device(mtd);
 
 	/* Free bad block table memory */
-	kfree (this->bbt);
-	/* Buffer allocated by nand_scan ? */
-	if (this->options & NAND_OOBBUF_ALLOC)
-		kfree (this->oob_buf);
-	/* Buffer allocated by nand_scan ? */
-	if (this->options & NAND_DATABUF_ALLOC)
-		kfree (this->data_buf);
+	kfree(chip->bbt);
 }
 
-EXPORT_SYMBOL_GPL (nand_scan);
-EXPORT_SYMBOL_GPL (nand_release);
-
+EXPORT_SYMBOL_GPL(nand_scan);
+EXPORT_SYMBOL_GPL(nand_release);
 
 static int __init nand_base_init(void)
 {
@@ -2748,6 +2537,6 @@ static void __exit nand_base_exit(void)
 module_init(nand_base_init);
 module_exit(nand_base_exit);
 
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>");
-MODULE_DESCRIPTION ("Generic NAND flash driver code");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("Generic NAND flash driver code");

drivers/mtd/nand/nand_bbt.c

@@ -48,7 +48,7 @@
  *
  * Following assumptions are made:
  * - bbts start at a page boundary, if autolocated on a block boundary
- * - the space neccecary for a bbt in FLASH does not exceed a block boundary
+ * - the space necessary for a bbt in FLASH does not exceed a block boundary
  *
  */
 
@@ -60,7 +60,7 @@
 #include <linux/mtd/compatmac.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
-
+#include <linux/vmalloc.h>
 
 /**
  * check_pattern - [GENERIC] check if a pattern is in the buffer
@@ -75,7 +75,7 @@
  * pattern area contain 0xff
  *
 */
-static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td)
+static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td)
 {
 	int i, end = 0;
 	uint8_t *p = buf;
@@ -116,7 +116,7 @@ static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_des
  * no optional empty check
  *
 */
-static int check_short_pattern (uint8_t *buf, struct nand_bbt_descr *td)
+static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td)
 {
 	int i;
 	uint8_t *p = buf;
@@ -142,8 +142,8 @@ static int check_short_pattern (uint8_t *buf, struct nand_bbt_descr *td)
  * Read the bad block table starting from page.
  *
  */
-static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num,
-	int bits, int offs, int reserved_block_code)
+static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
+		    int bits, int offs, int reserved_block_code)
 {
 	int res, i, j, act = 0;
 	struct nand_chip *this = mtd->priv;
@@ -152,17 +152,17 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num,
 	uint8_t msk = (uint8_t) ((1 << bits) - 1);
 
 	totlen = (num * bits) >> 3;
-	from = ((loff_t)page) << this->page_shift;
+	from = ((loff_t) page) << this->page_shift;
 
 	while (totlen) {
-		len = min (totlen, (size_t) (1 << this->bbt_erase_shift));
-		res = mtd->read_ecc (mtd, from, len, &retlen, buf, NULL, this->autooob);
+		len = min(totlen, (size_t) (1 << this->bbt_erase_shift));
+		res = mtd->read(mtd, from, len, &retlen, buf);
 		if (res < 0) {
 			if (retlen != len) {
-				printk (KERN_INFO "nand_bbt: Error reading bad block table\n");
+				printk(KERN_INFO "nand_bbt: Error reading bad block table\n");
 				return res;
 			}
-			printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n");
+			printk(KERN_WARNING "nand_bbt: ECC error while reading bad block table\n");
 		}
 
 		/* Analyse data */
@@ -172,22 +172,23 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num,
 				uint8_t tmp = (dat >> j) & msk;
 				if (tmp == msk)
 					continue;
-				if (reserved_block_code &&
-				    (tmp == reserved_block_code)) {
-					printk (KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
-						((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+				if (reserved_block_code && (tmp == reserved_block_code)) {
+					printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
+					       ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
 					this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06);
+					mtd->ecc_stats.bbtblocks++;
 					continue;
 				}
 				/* Leave it for now, if its matured we can move this
 				 * message to MTD_DEBUG_LEVEL0 */
-				printk (KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n",
-					((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+				printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n",
+				       ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
 				/* Factory marked bad or worn out ? */
 				if (tmp == 0)
 					this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06);
 				else
 					this->bbt[offs + (act >> 3)] |= 0x1 << (act & 0x06);
+				mtd->ecc_stats.badblocks++;
 			}
 		}
 		totlen -= len;
@@ -207,7 +208,7 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num,
  * Read the bad block table for all chips starting at a given page
  * We assume that the bbt bits are in consecutive order.
 */
-static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip)
+static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip)
 {
 	struct nand_chip *this = mtd->priv;
 	int res = 0, i;
@@ -231,6 +232,42 @@ static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des
 	return 0;
 }
 
+/*
+ * Scan read raw data from flash
+ */
+static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs,
+			 size_t len)
+{
+	struct mtd_oob_ops ops;
+
+	ops.mode = MTD_OOB_RAW;
+	ops.ooboffs = 0;
+	ops.ooblen = mtd->oobsize;
+	ops.oobbuf = buf;
+	ops.datbuf = buf;
+	ops.len = len;
+
+	return mtd->read_oob(mtd, offs, &ops);
+}
+
+/*
+ * Scan write data with oob to flash
+ */
+static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len,
+			  uint8_t *buf, uint8_t *oob)
+{
+	struct mtd_oob_ops ops;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = 0;
+	ops.ooblen = mtd->oobsize;
+	ops.datbuf = buf;
+	ops.oobbuf = oob;
+	ops.len = len;
+
+	return mtd->write_oob(mtd, offs, &ops);
+}
+
 /**
  * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page
  * @mtd:	MTD device structure
@@ -242,28 +279,85 @@ static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des
  * We assume that the bbt bits are in consecutive order.
  *
 */
-static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td,
-	struct nand_bbt_descr *md)
+static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
+			 struct nand_bbt_descr *td, struct nand_bbt_descr *md)
 {
 	struct nand_chip *this = mtd->priv;
 
 	/* Read the primary version, if available */
 	if (td->options & NAND_BBT_VERSION) {
-		nand_read_raw (mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize);
-		td->version[0] = buf[mtd->oobblock + td->veroffs];
-		printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]);
+		scan_read_raw(mtd, buf, td->pages[0] << this->page_shift,
+			      mtd->writesize);
+		td->version[0] = buf[mtd->writesize + td->veroffs];
+		printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
+		       td->pages[0], td->version[0]);
 	}
 
 	/* Read the mirror version, if available */
 	if (md && (md->options & NAND_BBT_VERSION)) {
-		nand_read_raw (mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize);
-		md->version[0] = buf[mtd->oobblock + md->veroffs];
-		printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]);
+		scan_read_raw(mtd, buf, md->pages[0] << this->page_shift,
+			      mtd->writesize);
+		md->version[0] = buf[mtd->writesize + md->veroffs];
+		printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
+		       md->pages[0], md->version[0]);
 	}
-
 	return 1;
 }
 
+/*
+ * Scan a given block full
+ */
+static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd,
+			   loff_t offs, uint8_t *buf, size_t readlen,
+			   int scanlen, int len)
+{
+	int ret, j;
+
+	ret = scan_read_raw(mtd, buf, offs, readlen);
+	if (ret)
+		return ret;
+
+	for (j = 0; j < len; j++, buf += scanlen) {
+		if (check_pattern(buf, scanlen, mtd->writesize, bd))
+			return 1;
+	}
+	return 0;
+}
+
+/*
+ * Scan a given block partially
+ */
+static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
+			   loff_t offs, uint8_t *buf, int len)
+{
+	struct mtd_oob_ops ops;
+	int j, ret;
+
+	ops.len = mtd->oobsize;
+	ops.ooblen = mtd->oobsize;
+	ops.oobbuf = buf;
+	ops.ooboffs = 0;
+	ops.datbuf = NULL;
+	ops.mode = MTD_OOB_PLACE;
+
+	for (j = 0; j < len; j++) {
+		/*
+		 * Read the full oob until read_oob is fixed to
+		 * handle single byte reads for 16 bit
+		 * buswidth
+		 */
+		ret = mtd->read_oob(mtd, offs, &ops);
+		if (ret)
+			return ret;
+
+		if (check_short_pattern(buf, bd))
+			return 1;
+
+		offs += mtd->writesize;
+	}
+	return 0;
+}
+
 /**
  * create_bbt - [GENERIC] Create a bad block table by scanning the device
  * @mtd:	MTD device structure
@@ -275,15 +369,16 @@ static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_de
  * Create a bad block table by scanning the device
  * for the given good/bad block identify pattern
  */
-static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip)
+static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
+	struct nand_bbt_descr *bd, int chip)
 {
 	struct nand_chip *this = mtd->priv;
-	int i, j, numblocks, len, scanlen;
+	int i, numblocks, len, scanlen;
 	int startblock;
 	loff_t from;
-	size_t readlen, ooblen;
+	size_t readlen;
 
-	printk (KERN_INFO "Scanning device for bad blocks\n");
+	printk(KERN_INFO "Scanning device for bad blocks\n");
 
 	if (bd->options & NAND_BBT_SCANALLPAGES)
 		len = 1 << (this->bbt_erase_shift - this->page_shift);
@@ -296,25 +391,24 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 
 	if (!(bd->options & NAND_BBT_SCANEMPTY)) {
 		/* We need only read few bytes from the OOB area */
-		scanlen = ooblen = 0;
+		scanlen = 0;
 		readlen = bd->len;
 	} else {
 		/* Full page content should be read */
-		scanlen	= mtd->oobblock + mtd->oobsize;
-		readlen = len * mtd->oobblock;
-		ooblen = len * mtd->oobsize;
+		scanlen = mtd->writesize + mtd->oobsize;
+		readlen = len * mtd->writesize;
 	}
 
 	if (chip == -1) {
-		/* Note that numblocks is 2 * (real numblocks) here, see i+=2 below as it
-		 * makes shifting and masking less painful */
+		/* Note that numblocks is 2 * (real numblocks) here, see i+=2
+		 * below as it makes shifting and masking less painful */
 		numblocks = mtd->size >> (this->bbt_erase_shift - 1);
 		startblock = 0;
 		from = 0;
 	} else {
 		if (chip >= this->numchips) {
-			printk (KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n",
-				chip + 1, this->numchips);
+			printk(KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n",
+			       chip + 1, this->numchips);
 			return -EINVAL;
 		}
 		numblocks = this->chipsize >> (this->bbt_erase_shift - 1);
@@ -326,36 +420,22 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 	for (i = startblock; i < numblocks;) {
 		int ret;
 
-		if (bd->options & NAND_BBT_SCANEMPTY)
-			if ((ret = nand_read_raw (mtd, buf, from, readlen, ooblen)))
-				return ret;
-
-		for (j = 0; j < len; j++) {
-			if (!(bd->options & NAND_BBT_SCANEMPTY)) {
-				size_t retlen;
-
-				/* Read the full oob until read_oob is fixed to
-				 * handle single byte reads for 16 bit buswidth */
-				ret = mtd->read_oob(mtd, from + j * mtd->oobblock,
-							mtd->oobsize, &retlen, buf);
-				if (ret)
-					return ret;
-
-				if (check_short_pattern (buf, bd)) {
-					this->bbt[i >> 3] |= 0x03 << (i & 0x6);
-					printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
-						i >> 1, (unsigned int) from);
-					break;
-				}
-			} else {
-				if (check_pattern (&buf[j * scanlen], scanlen, mtd->oobblock, bd)) {
-					this->bbt[i >> 3] |= 0x03 << (i & 0x6);
-					printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
-						i >> 1, (unsigned int) from);
-					break;
-				}
-			}
+		if (bd->options & NAND_BBT_SCANALLPAGES)
+			ret = scan_block_full(mtd, bd, from, buf, readlen,
+					      scanlen, len);
+		else
+			ret = scan_block_fast(mtd, bd, from, buf, len);
+
+		if (ret < 0)
+			return ret;
+
+		if (ret) {
+			this->bbt[i >> 3] |= 0x03 << (i & 0x6);
+			printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
+			       i >> 1, (unsigned int)from);
+			mtd->ecc_stats.badblocks++;
 		}
+
 		i += 2;
 		from += (1 << this->bbt_erase_shift);
 	}
@@ -374,22 +454,23 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
  * block.
  * If the option NAND_BBT_PERCHIP is given, each chip is searched
  * for a bbt, which contains the bad block information of this chip.
- * This is neccecary to provide support for certain DOC devices.
+ * This is necessary to provide support for certain DOC devices.
  *
  * The bbt ident pattern resides in the oob area of the first page
  * in a block.
  */
-static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td)
+static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td)
 {
 	struct nand_chip *this = mtd->priv;
 	int i, chips;
 	int bits, startblock, block, dir;
-	int scanlen = mtd->oobblock + mtd->oobsize;
+	int scanlen = mtd->writesize + mtd->oobsize;
 	int bbtblocks;
+	int blocktopage = this->bbt_erase_shift - this->page_shift;
 
 	/* Search direction top -> down ? */
 	if (td->options & NAND_BBT_LASTBLOCK) {
-		startblock = (mtd->size >> this->bbt_erase_shift) -1;
+		startblock = (mtd->size >> this->bbt_erase_shift) - 1;
 		dir = -1;
 	} else {
 		startblock = 0;
@@ -415,13 +496,16 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 		td->pages[i] = -1;
 		/* Scan the maximum number of blocks */
 		for (block = 0; block < td->maxblocks; block++) {
+
 			int actblock = startblock + dir * block;
+			loff_t offs = actblock << this->bbt_erase_shift;
+
 			/* Read first page */
-			nand_read_raw (mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize);
-			if (!check_pattern(buf, scanlen, mtd->oobblock, td)) {
-				td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift);
+			scan_read_raw(mtd, buf, offs, mtd->writesize);
+			if (!check_pattern(buf, scanlen, mtd->writesize, td)) {
+				td->pages[i] = actblock << blocktopage;
 				if (td->options & NAND_BBT_VERSION) {
-					td->version[i] = buf[mtd->oobblock + td->veroffs];
+					td->version[i] = buf[mtd->writesize + td->veroffs];
 				}
 				break;
 			}
@@ -431,9 +515,10 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 	/* Check, if we found a bbt for each requested chip */
 	for (i = 0; i < chips; i++) {
 		if (td->pages[i] == -1)
-			printk (KERN_WARNING "Bad block table not found for chip %d\n", i);
+			printk(KERN_WARNING "Bad block table not found for chip %d\n", i);
 		else
-			printk (KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]);
+			printk(KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i],
+			       td->version[i]);
 	}
 	return 0;
 }
@@ -447,21 +532,19 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
  *
  * Search and read the bad block table(s)
 */
-static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf,
-	struct nand_bbt_descr *td, struct nand_bbt_descr *md)
+static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md)
 {
 	/* Search the primary table */
-	search_bbt (mtd, buf, td);
+	search_bbt(mtd, buf, td);
 
 	/* Search the mirror table */
 	if (md)
-		search_bbt (mtd, buf, md);
+		search_bbt(mtd, buf, md);
 
 	/* Force result check */
 	return 1;
 }
 
-
 /**
  * write_bbt - [GENERIC] (Re)write the bad block table
  *
@@ -474,25 +557,31 @@ static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf,
  * (Re)write the bad block table
  *
 */
-static int write_bbt (struct mtd_info *mtd, uint8_t *buf,
-	struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel)
+static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
+		     struct nand_bbt_descr *td, struct nand_bbt_descr *md,
+		     int chipsel)
 {
 	struct nand_chip *this = mtd->priv;
-	struct nand_oobinfo oobinfo;
 	struct erase_info einfo;
 	int i, j, res, chip = 0;
 	int bits, startblock, dir, page, offs, numblocks, sft, sftmsk;
-	int nrchips, bbtoffs, pageoffs;
+	int nrchips, bbtoffs, pageoffs, ooboffs;
 	uint8_t msk[4];
 	uint8_t rcode = td->reserved_block_code;
 	size_t retlen, len = 0;
 	loff_t to;
+	struct mtd_oob_ops ops;
+
+	ops.ooblen = mtd->oobsize;
+	ops.ooboffs = 0;
+	ops.datbuf = NULL;
+	ops.mode = MTD_OOB_PLACE;
 
 	if (!rcode)
 		rcode = 0xff;
 	/* Write bad block table per chip rather than per device ? */
 	if (td->options & NAND_BBT_PERCHIP) {
-		numblocks = (int) (this->chipsize >> this->bbt_erase_shift);
+		numblocks = (int)(this->chipsize >> this->bbt_erase_shift);
 		/* Full device write or specific chip ? */
 		if (chipsel == -1) {
 			nrchips = this->numchips;
@@ -501,7 +590,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf,
 			chip = chipsel;
 		}
 	} else {
-		numblocks = (int) (mtd->size >> this->bbt_erase_shift);
+		numblocks = (int)(mtd->size >> this->bbt_erase_shift);
 		nrchips = 1;
 	}
 
@@ -530,27 +619,38 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf,
 		for (i = 0; i < td->maxblocks; i++) {
 			int block = startblock + dir * i;
 			/* Check, if the block is bad */
-			switch ((this->bbt[block >> 2] >> (2 * (block & 0x03))) & 0x03) {
+			switch ((this->bbt[block >> 2] >>
+				 (2 * (block & 0x03))) & 0x03) {
 			case 0x01:
 			case 0x03:
 				continue;
 			}
-			page = block << (this->bbt_erase_shift - this->page_shift);
+			page = block <<
+				(this->bbt_erase_shift - this->page_shift);
 			/* Check, if the block is used by the mirror table */
 			if (!md || md->pages[chip] != page)
 				goto write;
 		}
-		printk (KERN_ERR "No space left to write bad block table\n");
+		printk(KERN_ERR "No space left to write bad block table\n");
 		return -ENOSPC;
-write:
+	write:
 
 		/* Set up shift count and masks for the flash table */
 		bits = td->options & NAND_BBT_NRBITS_MSK;
+		msk[2] = ~rcode;
 		switch (bits) {
-		case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x01; break;
-		case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x03; break;
-		case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C; msk[2] = ~rcode; msk[3] = 0x0f; break;
-		case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F; msk[2] = ~rcode; msk[3] = 0xff; break;
+		case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01;
+			msk[3] = 0x01;
+			break;
+		case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01;
+			msk[3] = 0x03;
+			break;
+		case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C;
+			msk[3] = 0x0f;
+			break;
+		case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F;
+			msk[3] = 0xff;
+			break;
 		default: return -EINVAL;
 		}
 
@@ -558,82 +658,92 @@ write:
 
 		to = ((loff_t) page) << this->page_shift;
 
-		memcpy (&oobinfo, this->autooob, sizeof(oobinfo));
-		oobinfo.useecc = MTD_NANDECC_PLACEONLY;
-
 		/* Must we save the block contents ? */
 		if (td->options & NAND_BBT_SAVECONTENT) {
 			/* Make it block aligned */
 			to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1));
 			len = 1 << this->bbt_erase_shift;
-			res = mtd->read_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo);
+			res = mtd->read(mtd, to, len, &retlen, buf);
 			if (res < 0) {
 				if (retlen != len) {
-					printk (KERN_INFO "nand_bbt: Error reading block for writing the bad block table\n");
+					printk(KERN_INFO "nand_bbt: Error "
+					       "reading block for writing "
+					       "the bad block table\n");
 					return res;
 				}
-				printk (KERN_WARNING "nand_bbt: ECC error while reading block for writing bad block table\n");
+				printk(KERN_WARNING "nand_bbt: ECC error "
+				       "while reading block for writing "
+				       "bad block table\n");
 			}
+			/* Read oob data */
+			ops.len = (len >> this->page_shift) * mtd->oobsize;
+			ops.oobbuf = &buf[len];
+			res = mtd->read_oob(mtd, to + mtd->writesize, &ops);
+			if (res < 0 || ops.retlen != ops.len)
+				goto outerr;
+
 			/* Calc the byte offset in the buffer */
 			pageoffs = page - (int)(to >> this->page_shift);
 			offs = pageoffs << this->page_shift;
 			/* Preset the bbt area with 0xff */
-			memset (&buf[offs], 0xff, (size_t)(numblocks >> sft));
-			/* Preset the bbt's oob area with 0xff */
-			memset (&buf[len + pageoffs * mtd->oobsize], 0xff,
-				((len >> this->page_shift) - pageoffs) * mtd->oobsize);
-			if (td->options & NAND_BBT_VERSION) {
-				buf[len + (pageoffs * mtd->oobsize) + td->veroffs] = td->version[chip];
-			}
+			memset(&buf[offs], 0xff, (size_t) (numblocks >> sft));
+			ooboffs = len + (pageoffs * mtd->oobsize);
+
 		} else {
 			/* Calc length */
 			len = (size_t) (numblocks >> sft);
 			/* Make it page aligned ! */
-			len = (len + (mtd->oobblock-1)) & ~(mtd->oobblock-1);
+			len = (len + (mtd->writesize - 1)) &
+				~(mtd->writesize - 1);
 			/* Preset the buffer with 0xff */
-			memset (buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize);
+			memset(buf, 0xff, len +
+			       (len >> this->page_shift)* mtd->oobsize);
 			offs = 0;
+			ooboffs = len;
 			/* Pattern is located in oob area of first page */
-			memcpy (&buf[len + td->offs], td->pattern, td->len);
-			if (td->options & NAND_BBT_VERSION) {
-				buf[len + td->veroffs] = td->version[chip];
-			}
+			memcpy(&buf[ooboffs + td->offs], td->pattern, td->len);
 		}
 
+		if (td->options & NAND_BBT_VERSION)
+			buf[ooboffs + td->veroffs] = td->version[chip];
+
 		/* walk through the memory table */
-		for (i = 0; i < numblocks; ) {
+		for (i = 0; i < numblocks;) {
 			uint8_t dat;
 			dat = this->bbt[bbtoffs + (i >> 2)];
-			for (j = 0; j < 4; j++ , i++) {
+			for (j = 0; j < 4; j++, i++) {
 				int sftcnt = (i << (3 - sft)) & sftmsk;
 				/* Do not store the reserved bbt blocks ! */
-				buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt);
+				buf[offs + (i >> sft)] &=
+					~(msk[dat & 0x03] << sftcnt);
 				dat >>= 2;
 			}
 		}
 
-		memset (&einfo, 0, sizeof (einfo));
+		memset(&einfo, 0, sizeof(einfo));
 		einfo.mtd = mtd;
-		einfo.addr = (unsigned long) to;
+		einfo.addr = (unsigned long)to;
 		einfo.len = 1 << this->bbt_erase_shift;
-		res = nand_erase_nand (mtd, &einfo, 1);
-		if (res < 0) {
-			printk (KERN_WARNING "nand_bbt: Error during block erase: %d\n", res);
-			return res;
-		}
+		res = nand_erase_nand(mtd, &einfo, 1);
+		if (res < 0)
+			goto outerr;
 
-		res = mtd->write_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo);
-		if (res < 0) {
-			printk (KERN_WARNING "nand_bbt: Error while writing bad block table %d\n", res);
-			return res;
-		}
-		printk (KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n",
-			(unsigned int) to, td->version[chip]);
+		res = scan_write_bbt(mtd, to, len, buf, &buf[len]);
+		if (res < 0)
+			goto outerr;
+
+		printk(KERN_DEBUG "Bad block table written to 0x%08x, version "
+		       "0x%02X\n", (unsigned int)to, td->version[chip]);
 
 		/* Mark it as used */
 		td->pages[chip] = page;
 	}
 	return 0;
+
+ outerr:
+	printk(KERN_WARNING
+	       "nand_bbt: Error while writing bad block table %d\n", res);
+	return res;
 }
 
 /**
@@ -644,27 +754,27 @@ write:
  * The function creates a memory based bbt by scanning the device
  * for manufacturer / software marked good / bad blocks
 */
-static inline int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
+static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
 {
 	struct nand_chip *this = mtd->priv;
 
 	bd->options &= ~NAND_BBT_SCANEMPTY;
-	return create_bbt (mtd, this->data_buf, bd, -1);
+	return create_bbt(mtd, this->buffers.databuf, bd, -1);
 }
 
 /**
- * check_create - [GENERIC] create and write bbt(s) if neccecary
+ * check_create - [GENERIC] create and write bbt(s) if necessary
  * @mtd:	MTD device structure
  * @buf:	temporary buffer
  * @bd:		descriptor for the good/bad block search pattern
  *
  * The function checks the results of the previous call to read_bbt
- * and creates / updates the bbt(s) if neccecary
- * Creation is neccecary if no bbt was found for the chip/device
- * Update is neccecary if one of the tables is missing or the
+ * and creates / updates the bbt(s) if necessary
+ * Creation is necessary if no bbt was found for the chip/device
+ * Update is necessary if one of the tables is missing or the
  * version nr. of one table is less than the other
 */
-static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
+static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
 {
 	int i, chips, writeops, chipsel, res;
 	struct nand_chip *this = mtd->priv;
@@ -732,35 +842,35 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des
 			rd = td;
 			goto writecheck;
 		}
-create:
+	create:
 		/* Create the bad block table by scanning the device ? */
 		if (!(td->options & NAND_BBT_CREATE))
 			continue;
 
 		/* Create the table in memory by scanning the chip(s) */
-		create_bbt (mtd, buf, bd, chipsel);
+		create_bbt(mtd, buf, bd, chipsel);
 
 		td->version[i] = 1;
 		if (md)
 			md->version[i] = 1;
-writecheck:
+	writecheck:
 		/* read back first ? */
 		if (rd)
-			read_abs_bbt (mtd, buf, rd, chipsel);
+			read_abs_bbt(mtd, buf, rd, chipsel);
 		/* If they weren't versioned, read both. */
 		if (rd2)
-			read_abs_bbt (mtd, buf, rd2, chipsel);
+			read_abs_bbt(mtd, buf, rd2, chipsel);
 
 		/* Write the bad block table to the device ? */
 		if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) {
-			res = write_bbt (mtd, buf, td, md, chipsel);
+			res = write_bbt(mtd, buf, td, md, chipsel);
 			if (res < 0)
 				return res;
 		}
 
 		/* Write the mirror bad block table to the device ? */
 		if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) {
-			res = write_bbt (mtd, buf, md, td, chipsel);
+			res = write_bbt(mtd, buf, md, td, chipsel);
 			if (res < 0)
 				return res;
 		}
@@ -777,7 +887,7 @@ writecheck:
  * accidental erasures / writes. The regions are identified by
  * the mark 0x02.
 */
-static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td)
+static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
 {
 	struct nand_chip *this = mtd->priv;
 	int i, j, chips, block, nrblocks, update;
@@ -795,7 +905,8 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td)
 	for (i = 0; i < chips; i++) {
 		if ((td->options & NAND_BBT_ABSPAGE) ||
 		    !(td->options & NAND_BBT_WRITE)) {
-		    	if (td->pages[i] == -1) continue;
+			if (td->pages[i] == -1)
+				continue;
 			block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift);
 			block <<= 1;
 			oldval = this->bbt[(block >> 3)];
@@ -815,7 +926,8 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td)
 			oldval = this->bbt[(block >> 3)];
 			newval = oldval | (0x2 << (block & 0x06));
 			this->bbt[(block >> 3)] = newval;
-			if (oldval != newval) update = 1;
+			if (oldval != newval)
+				update = 1;
 			block += 2;
 		}
 		/* If we want reserved blocks to be recorded to flash, and some
@@ -840,7 +952,7 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td)
  * by calling the nand_free_bbt function.
  *
 */
-int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
+int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
 {
 	struct nand_chip *this = mtd->priv;
 	int len, res = 0;
@@ -850,21 +962,21 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
 
 	len = mtd->size >> (this->bbt_erase_shift + 2);
 	/* Allocate memory (2bit per block) */
-	this->bbt = kmalloc (len, GFP_KERNEL);
+	this->bbt = kmalloc(len, GFP_KERNEL);
 	if (!this->bbt) {
-		printk (KERN_ERR "nand_scan_bbt: Out of memory\n");
+		printk(KERN_ERR "nand_scan_bbt: Out of memory\n");
 		return -ENOMEM;
 	}
 	/* Clear the memory bad block table */
-	memset (this->bbt, 0x00, len);
+	memset(this->bbt, 0x00, len);
 
 	/* If no primary table decriptor is given, scan the device
 	 * to build a memory based bad block table
 	 */
 	if (!td) {
 		if ((res = nand_memory_bbt(mtd, bd))) {
-			printk (KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n");
-			kfree (this->bbt);
+			printk(KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n");
+			kfree(this->bbt);
 			this->bbt = NULL;
 		}
 		return res;
@@ -873,35 +985,34 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
 	/* Allocate a temporary buffer for one eraseblock incl. oob */
 	len = (1 << this->bbt_erase_shift);
 	len += (len >> this->page_shift) * mtd->oobsize;
-	buf = kmalloc (len, GFP_KERNEL);
+	buf = vmalloc(len);
 	if (!buf) {
-		printk (KERN_ERR "nand_bbt: Out of memory\n");
-		kfree (this->bbt);
+		printk(KERN_ERR "nand_bbt: Out of memory\n");
+		kfree(this->bbt);
 		this->bbt = NULL;
 		return -ENOMEM;
 	}
 
 	/* Is the bbt at a given page ? */
 	if (td->options & NAND_BBT_ABSPAGE) {
-		res = read_abs_bbts (mtd, buf, td, md);
+		res = read_abs_bbts(mtd, buf, td, md);
 	} else {
 		/* Search the bad block table using a pattern in oob */
-		res = search_read_bbts (mtd, buf, td, md);
+		res = search_read_bbts(mtd, buf, td, md);
 	}
 
 	if (res)
-		res = check_create (mtd, buf, bd);
+		res = check_create(mtd, buf, bd);
 
 	/* Prevent the bbt regions from erasing / writing */
-	mark_bbt_region (mtd, td);
+	mark_bbt_region(mtd, td);
 	if (md)
-		mark_bbt_region (mtd, md);
+		mark_bbt_region(mtd, md);
 
-	kfree (buf);
+	vfree(buf);
 	return res;
 }
 
-
 /**
  * nand_update_bbt - [NAND Interface] update bad block table(s)
  * @mtd:	MTD device structure
@@ -909,7 +1020,7 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
  *
  * The function updates the bad block table(s)
 */
-int nand_update_bbt (struct mtd_info *mtd, loff_t offs)
+int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
 {
 	struct nand_chip *this = mtd->priv;
 	int len, res = 0, writeops = 0;
@@ -925,9 +1036,9 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs)
 	/* Allocate a temporary buffer for one eraseblock incl. oob */
 	len = (1 << this->bbt_erase_shift);
 	len += (len >> this->page_shift) * mtd->oobsize;
-	buf = kmalloc (len, GFP_KERNEL);
+	buf = kmalloc(len, GFP_KERNEL);
 	if (!buf) {
-		printk (KERN_ERR "nand_update_bbt: Out of memory\n");
+		printk(KERN_ERR "nand_update_bbt: Out of memory\n");
 		return -ENOMEM;
 	}
 
@@ -935,7 +1046,7 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs)
 
 	/* Do we have a bbt per chip ? */
 	if (td->options & NAND_BBT_PERCHIP) {
-		chip = (int) (offs >> this->chip_shift);
+		chip = (int)(offs >> this->chip_shift);
 		chipsel = chip;
 	} else {
 		chip = 0;
@@ -948,17 +1059,17 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs)
 
 	/* Write the bad block table to the device ? */
 	if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) {
-		res = write_bbt (mtd, buf, td, md, chipsel);
+		res = write_bbt(mtd, buf, td, md, chipsel);
 		if (res < 0)
 			goto out;
 	}
 	/* Write the mirror bad block table to the device ? */
 	if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) {
-		res = write_bbt (mtd, buf, md, td, chipsel);
+		res = write_bbt(mtd, buf, md, td, chipsel);
 	}
 
-out:
-	kfree (buf);
+ out:
+	kfree(buf);
 	return res;
 }
 
@@ -981,14 +1092,14 @@ static struct nand_bbt_descr largepage_memorybased = {
 };
 
 static struct nand_bbt_descr smallpage_flashbased = {
-	.options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES,
+	.options = NAND_BBT_SCAN2NDPAGE,
 	.offs = 5,
 	.len = 1,
 	.pattern = scan_ff_pattern
 };
 
 static struct nand_bbt_descr largepage_flashbased = {
-	.options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES,
+	.options = NAND_BBT_SCAN2NDPAGE,
 	.offs = 0,
 	.len = 2,
 	.pattern = scan_ff_pattern
@@ -1036,7 +1147,7 @@ static struct nand_bbt_descr bbt_mirror_descr = {
  * support for the device and calls the nand_scan_bbt function
  *
 */
-int nand_default_bbt (struct mtd_info *mtd)
+int nand_default_bbt(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
 
@@ -1046,7 +1157,7 @@ int nand_default_bbt (struct mtd_info *mtd)
 	 * of the good / bad information, so we _must_ store
 	 * this information in a good / bad table during
 	 * startup
-	*/
+	 */
 	if (this->options & NAND_IS_AND) {
 		/* Use the default pattern descriptors */
 		if (!this->bbt_td) {
@@ -1054,10 +1165,9 @@ int nand_default_bbt (struct mtd_info *mtd)
 			this->bbt_md = &bbt_mirror_descr;
 		}
 		this->options |= NAND_USE_FLASH_BBT;
-		return nand_scan_bbt (mtd, &agand_flashbased);
+		return nand_scan_bbt(mtd, &agand_flashbased);
 	}
 
-
 	/* Is a flash based bad block table requested ? */
 	if (this->options & NAND_USE_FLASH_BBT) {
 		/* Use the default pattern descriptors */
@@ -1066,18 +1176,17 @@ int nand_default_bbt (struct mtd_info *mtd)
 			this->bbt_md = &bbt_mirror_descr;
 		}
 		if (!this->badblock_pattern) {
-			this->badblock_pattern = (mtd->oobblock > 512) ?
-				&largepage_flashbased : &smallpage_flashbased;
+			this->badblock_pattern = (mtd->writesize > 512) ? &largepage_flashbased : &smallpage_flashbased;
 		}
 	} else {
 		this->bbt_td = NULL;
 		this->bbt_md = NULL;
 		if (!this->badblock_pattern) {
-			this->badblock_pattern = (mtd->oobblock > 512) ?
-				&largepage_memorybased : &smallpage_memorybased;
+			this->badblock_pattern = (mtd->writesize > 512) ?
+			    &largepage_memorybased : &smallpage_memorybased;
 		}
 	}
-	return nand_scan_bbt (mtd, this->badblock_pattern);
+	return nand_scan_bbt(mtd, this->badblock_pattern);
 }
 
 /**
@@ -1087,26 +1196,29 @@ int nand_default_bbt (struct mtd_info *mtd)
  * @allowbbt:	allow access to bad block table region
  *
 */
-int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt)
+int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
 {
 	struct nand_chip *this = mtd->priv;
 	int block;
-	uint8_t	res;
+	uint8_t res;
 
 	/* Get block number * 2 */
-	block = (int) (offs >> (this->bbt_erase_shift - 1));
+	block = (int)(offs >> (this->bbt_erase_shift - 1));
 	res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03;
 
-	DEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n",
-		(unsigned int)offs, block >> 1, res);
+	DEBUG(MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n",
+	      (unsigned int)offs, block >> 1, res);
 
 	switch ((int)res) {
-	case 0x00:	return 0;
-	case 0x01:	return 1;
-	case 0x02:	return allowbbt ? 0 : 1;
+	case 0x00:
+		return 0;
+	case 0x01:
+		return 1;
+	case 0x02:
+		return allowbbt ? 0 : 1;
 	}
 	return 1;
 }
 
-EXPORT_SYMBOL (nand_scan_bbt);
-EXPORT_SYMBOL (nand_default_bbt);
+EXPORT_SYMBOL(nand_scan_bbt);
+EXPORT_SYMBOL(nand_default_bbt);

drivers/mtd/nand/nand_ecc.c

@@ -7,6 +7,8 @@
  * Copyright (C) 2000-2004 Steven J. Hill (sjhill@realitydiluted.com)
  *                         Toshiba America Electronics Components, Inc.
  *
+ * Copyright (C) 2006 Thomas Gleixner <tglx@linutronix.de>
+ *
  * $Id: nand_ecc.c,v 1.15 2005/11/07 11:14:30 gleixner Exp $
  *
  * This file is free software; you can redistribute it and/or modify it
@@ -62,90 +64,76 @@ static const u_char nand_ecc_precalc_table[] = {
 	0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00
 };
 
-
 /**
- * nand_trans_result - [GENERIC] create non-inverted ECC
- * @reg2:	line parity reg 2
- * @reg3:	line parity reg 3
- * @ecc_code:	ecc
- *
- * Creates non-inverted ECC code from line parity
- */
-static void nand_trans_result(u_char reg2, u_char reg3,
-	u_char *ecc_code)
-{
-	u_char a, b, i, tmp1, tmp2;
-
-	/* Initialize variables */
-	a = b = 0x80;
-	tmp1 = tmp2 = 0;
-
-	/* Calculate first ECC byte */
-	for (i = 0; i < 4; i++) {
-		if (reg3 & a)		/* LP15,13,11,9 --> ecc_code[0] */
-			tmp1 |= b;
-		b >>= 1;
-		if (reg2 & a)		/* LP14,12,10,8 --> ecc_code[0] */
-			tmp1 |= b;
-		b >>= 1;
-		a >>= 1;
-	}
-
-	/* Calculate second ECC byte */
-	b = 0x80;
-	for (i = 0; i < 4; i++) {
-		if (reg3 & a)		/* LP7,5,3,1 --> ecc_code[1] */
-			tmp2 |= b;
-		b >>= 1;
-		if (reg2 & a)		/* LP6,4,2,0 --> ecc_code[1] */
-			tmp2 |= b;
-		b >>= 1;
-		a >>= 1;
-	}
-
-	/* Store two of the ECC bytes */
-	ecc_code[0] = tmp1;
-	ecc_code[1] = tmp2;
-}
-
-/**
- * nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code for 256 byte block
+ * nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code
+ *			for 256 byte block
  * @mtd:	MTD block structure
  * @dat:	raw data
  * @ecc_code:	buffer for ECC
  */
-int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
+int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
+		       u_char *ecc_code)
 {
-	u_char idx, reg1, reg2, reg3;
-	int j;
+	uint8_t idx, reg1, reg2, reg3, tmp1, tmp2;
+	int i;
 
 	/* Initialize variables */
 	reg1 = reg2 = reg3 = 0;
-	ecc_code[0] = ecc_code[1] = ecc_code[2] = 0;
 
 	/* Build up column parity */
-	for(j = 0; j < 256; j++) {
-
+	for(i = 0; i < 256; i++) {
 		/* Get CP0 - CP5 from table */
-		idx = nand_ecc_precalc_table[dat[j]];
+		idx = nand_ecc_precalc_table[*dat++];
 		reg1 ^= (idx & 0x3f);
 
 		/* All bit XOR = 1 ? */
 		if (idx & 0x40) {
-			reg3 ^= (u_char) j;
-			reg2 ^= ~((u_char) j);
+			reg3 ^= (uint8_t) i;
+			reg2 ^= ~((uint8_t) i);
 		}
 	}
 
 	/* Create non-inverted ECC code from line parity */
-	nand_trans_result(reg2, reg3, ecc_code);
+	tmp1  = (reg3 & 0x80) >> 0; /* B7 -> B7 */
+	tmp1 |= (reg2 & 0x80) >> 1; /* B7 -> B6 */
+	tmp1 |= (reg3 & 0x40) >> 1; /* B6 -> B5 */
+	tmp1 |= (reg2 & 0x40) >> 2; /* B6 -> B4 */
+	tmp1 |= (reg3 & 0x20) >> 2; /* B5 -> B3 */
+	tmp1 |= (reg2 & 0x20) >> 3; /* B5 -> B2 */
+	tmp1 |= (reg3 & 0x10) >> 3; /* B4 -> B1 */
+	tmp1 |= (reg2 & 0x10) >> 4; /* B4 -> B0 */
+
+	tmp2  = (reg3 & 0x08) << 4; /* B3 -> B7 */
+	tmp2 |= (reg2 & 0x08) << 3; /* B3 -> B6 */
+	tmp2 |= (reg3 & 0x04) << 3; /* B2 -> B5 */
+	tmp2 |= (reg2 & 0x04) << 2; /* B2 -> B4 */
+	tmp2 |= (reg3 & 0x02) << 2; /* B1 -> B3 */
+	tmp2 |= (reg2 & 0x02) << 1; /* B1 -> B2 */
+	tmp2 |= (reg3 & 0x01) << 1; /* B0 -> B1 */
+	tmp2 |= (reg2 & 0x01) << 0; /* B7 -> B0 */
 
 	/* Calculate final ECC code */
-	ecc_code[0] = ~ecc_code[0];
-	ecc_code[1] = ~ecc_code[1];
+#ifdef CONFIG_NAND_ECC_SMC
+	ecc_code[0] = ~tmp2;
+	ecc_code[1] = ~tmp1;
+#else
+	ecc_code[0] = ~tmp1;
+	ecc_code[1] = ~tmp2;
+#endif
 	ecc_code[2] = ((~reg1) << 2) | 0x03;
+
 	return 0;
 }
+EXPORT_SYMBOL(nand_calculate_ecc);
+
+static inline int countbits(uint32_t byte)
+{
+	int res = 0;
+
+	for (;byte; byte >>= 1)
+		res += byte & 0x01;
+	return res;
+}
 
 /**
  * nand_correct_data - [NAND Interface] Detect and correct bit error(s)
@@ -156,93 +144,54 @@ int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code
  *
  * Detect and correct a 1 bit error for 256 byte block
  */
-int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
+int nand_correct_data(struct mtd_info *mtd, u_char *dat,
+		      u_char *read_ecc, u_char *calc_ecc)
 {
-	u_char a, b, c, d1, d2, d3, add, bit, i;
+	uint8_t s0, s1, s2;
+
+#ifdef CONFIG_NAND_ECC_SMC
+	s0 = calc_ecc[0] ^ read_ecc[0];
+	s1 = calc_ecc[1] ^ read_ecc[1];
+	s2 = calc_ecc[2] ^ read_ecc[2];
+#else
+	s1 = calc_ecc[0] ^ read_ecc[0];
+	s0 = calc_ecc[1] ^ read_ecc[1];
+	s2 = calc_ecc[2] ^ read_ecc[2];
+#endif
+	if ((s0 | s1 | s2) == 0)
+		return 0;
 
-	/* Do error detection */
-	d1 = calc_ecc[0] ^ read_ecc[0];
-	d2 = calc_ecc[1] ^ read_ecc[1];
-	d3 = calc_ecc[2] ^ read_ecc[2];
+	/* Check for a single bit error */
+	if( ((s0 ^ (s0 >> 1)) & 0x55) == 0x55 &&
+	    ((s1 ^ (s1 >> 1)) & 0x55) == 0x55 &&
+	    ((s2 ^ (s2 >> 1)) & 0x54) == 0x54) {
 
-	if ((d1 | d2 | d3) == 0) {
-		/* No errors */
-		return 0;
-	}
-	else {
-		a = (d1 ^ (d1 >> 1)) & 0x55;
-		b = (d2 ^ (d2 >> 1)) & 0x55;
-		c = (d3 ^ (d3 >> 1)) & 0x54;
-
-		/* Found and will correct single bit error in the data */
-		if ((a == 0x55) && (b == 0x55) && (c == 0x54)) {
-			c = 0x80;
-			add = 0;
-			a = 0x80;
-			for (i=0; i<4; i++) {
-				if (d1 & c)
-					add |= a;
-				c >>= 2;
-				a >>= 1;
-			}
-			c = 0x80;
-			for (i=0; i<4; i++) {
-				if (d2 & c)
-					add |= a;
-				c >>= 2;
-				a >>= 1;
-			}
-			bit = 0;
-			b = 0x04;
-			c = 0x80;
-			for (i=0; i<3; i++) {
-				if (d3 & c)
-					bit |= b;
-				c >>= 2;
-				b >>= 1;
-			}
-			b = 0x01;
-			a = dat[add];
-			a ^= (b << bit);
-			dat[add] = a;
-			return 1;
-		}
-		else {
-			i = 0;
-			while (d1) {
-				if (d1 & 0x01)
-					++i;
-				d1 >>= 1;
-			}
-			while (d2) {
-				if (d2 & 0x01)
-					++i;
-				d2 >>= 1;
-			}
-			while (d3) {
-				if (d3 & 0x01)
-					++i;
-				d3 >>= 1;
-			}
-			if (i == 1) {
-				/* ECC Code Error Correction */
-				read_ecc[0] = calc_ecc[0];
-				read_ecc[1] = calc_ecc[1];
-				read_ecc[2] = calc_ecc[2];
-				return 2;
-			}
-			else {
-				/* Uncorrectable Error */
-				return -1;
-			}
-		}
+		uint32_t byteoffs, bitnum;
+
+		byteoffs = (s1 << 0) & 0x80;
+		byteoffs |= (s1 << 1) & 0x40;
+		byteoffs |= (s1 << 2) & 0x20;
+		byteoffs |= (s1 << 3) & 0x10;
+
+		byteoffs |= (s0 >> 4) & 0x08;
+		byteoffs |= (s0 >> 3) & 0x04;
+		byteoffs |= (s0 >> 2) & 0x02;
+		byteoffs |= (s0 >> 1) & 0x01;
+
+		bitnum = (s2 >> 5) & 0x04;
+		bitnum |= (s2 >> 4) & 0x02;
+		bitnum |= (s2 >> 3) & 0x01;
+
+		dat[byteoffs] ^= (1 << bitnum);
+
+		return 1;
 	}
 
-	/* Should never happen */
+	if(countbits(s0 | ((uint32_t)s1 << 8) | ((uint32_t)s2 <<16)) == 1)
+		return 1;
+
 	return -1;
 }
-
-EXPORT_SYMBOL(nand_calculate_ecc);
 EXPORT_SYMBOL(nand_correct_data);
 
 MODULE_LICENSE("GPL");

drivers/mtd/nand/nand_ids.c

@@ -18,99 +18,110 @@
 *	Name. ID code, pagesize, chipsize in MegaByte, eraseblock size,
 *	options
 *
-* 	Pagesize; 0, 256, 512
-*	0 	get this information from the extended chip ID
+*	Pagesize; 0, 256, 512
+*	0	get this information from the extended chip ID
 +	256	256 Byte page size
 *	512	512 Byte page size
 */
 struct nand_flash_dev nand_flash_ids[] = {
-	{"NAND 1MiB 5V 8-bit", 		0x6e, 256, 1, 0x1000, 0},
-	{"NAND 2MiB 5V 8-bit", 		0x64, 256, 2, 0x1000, 0},
-	{"NAND 4MiB 5V 8-bit", 		0x6b, 512, 4, 0x2000, 0},
-	{"NAND 1MiB 3,3V 8-bit", 	0xe8, 256, 1, 0x1000, 0},
-	{"NAND 1MiB 3,3V 8-bit", 	0xec, 256, 1, 0x1000, 0},
-	{"NAND 2MiB 3,3V 8-bit", 	0xea, 256, 2, 0x1000, 0},
-	{"NAND 4MiB 3,3V 8-bit", 	0xd5, 512, 4, 0x2000, 0},
-	{"NAND 4MiB 3,3V 8-bit", 	0xe3, 512, 4, 0x2000, 0},
-	{"NAND 4MiB 3,3V 8-bit", 	0xe5, 512, 4, 0x2000, 0},
-	{"NAND 8MiB 3,3V 8-bit", 	0xd6, 512, 8, 0x2000, 0},
-
-	{"NAND 8MiB 1,8V 8-bit", 	0x39, 512, 8, 0x2000, 0},
-	{"NAND 8MiB 3,3V 8-bit", 	0xe6, 512, 8, 0x2000, 0},
-	{"NAND 8MiB 1,8V 16-bit", 	0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16},
-	{"NAND 8MiB 3,3V 16-bit", 	0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16},
-
-	{"NAND 16MiB 1,8V 8-bit", 	0x33, 512, 16, 0x4000, 0},
-	{"NAND 16MiB 3,3V 8-bit", 	0x73, 512, 16, 0x4000, 0},
-	{"NAND 16MiB 1,8V 16-bit", 	0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16},
-	{"NAND 16MiB 3,3V 16-bit", 	0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16},
-
-	{"NAND 32MiB 1,8V 8-bit", 	0x35, 512, 32, 0x4000, 0},
-	{"NAND 32MiB 3,3V 8-bit", 	0x75, 512, 32, 0x4000, 0},
-	{"NAND 32MiB 1,8V 16-bit", 	0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16},
-	{"NAND 32MiB 3,3V 16-bit", 	0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16},
-
-	{"NAND 64MiB 1,8V 8-bit", 	0x36, 512, 64, 0x4000, 0},
-	{"NAND 64MiB 3,3V 8-bit", 	0x76, 512, 64, 0x4000, 0},
-	{"NAND 64MiB 1,8V 16-bit", 	0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16},
-	{"NAND 64MiB 3,3V 16-bit", 	0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16},
-
-	{"NAND 128MiB 1,8V 8-bit", 	0x78, 512, 128, 0x4000, 0},
-	{"NAND 128MiB 1,8V 8-bit", 	0x39, 512, 128, 0x4000, 0},
-	{"NAND 128MiB 3,3V 8-bit", 	0x79, 512, 128, 0x4000, 0},
-	{"NAND 128MiB 1,8V 16-bit", 	0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-	{"NAND 128MiB 1,8V 16-bit", 	0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-	{"NAND 128MiB 3,3V 16-bit", 	0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-	{"NAND 128MiB 3,3V 16-bit", 	0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-
-	{"NAND 256MiB 3,3V 8-bit", 	0x71, 512, 256, 0x4000, 0},
-
-	/* These are the new chips with large page size. The pagesize
-	* and the erasesize is determined from the extended id bytes
-	*/
+	{"NAND 1MiB 5V 8-bit",		0x6e, 256, 1, 0x1000, 0},
+	{"NAND 2MiB 5V 8-bit",		0x64, 256, 2, 0x1000, 0},
+	{"NAND 4MiB 5V 8-bit",		0x6b, 512, 4, 0x2000, 0},
+	{"NAND 1MiB 3,3V 8-bit",	0xe8, 256, 1, 0x1000, 0},
+	{"NAND 1MiB 3,3V 8-bit",	0xec, 256, 1, 0x1000, 0},
+	{"NAND 2MiB 3,3V 8-bit",	0xea, 256, 2, 0x1000, 0},
+	{"NAND 4MiB 3,3V 8-bit",	0xd5, 512, 4, 0x2000, 0},
+	{"NAND 4MiB 3,3V 8-bit",	0xe3, 512, 4, 0x2000, 0},
+	{"NAND 4MiB 3,3V 8-bit",	0xe5, 512, 4, 0x2000, 0},
+	{"NAND 8MiB 3,3V 8-bit",	0xd6, 512, 8, 0x2000, 0},
+
+	{"NAND 8MiB 1,8V 8-bit",	0x39, 512, 8, 0x2000, 0},
+	{"NAND 8MiB 3,3V 8-bit",	0xe6, 512, 8, 0x2000, 0},
+	{"NAND 8MiB 1,8V 16-bit",	0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16},
+	{"NAND 8MiB 3,3V 16-bit",	0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16},
+
+	{"NAND 16MiB 1,8V 8-bit",	0x33, 512, 16, 0x4000, 0},
+	{"NAND 16MiB 3,3V 8-bit",	0x73, 512, 16, 0x4000, 0},
+	{"NAND 16MiB 1,8V 16-bit",	0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16},
+	{"NAND 16MiB 3,3V 16-bit",	0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16},
+
+	{"NAND 32MiB 1,8V 8-bit",	0x35, 512, 32, 0x4000, 0},
+	{"NAND 32MiB 3,3V 8-bit",	0x75, 512, 32, 0x4000, 0},
+	{"NAND 32MiB 1,8V 16-bit",	0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16},
+	{"NAND 32MiB 3,3V 16-bit",	0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16},
+
+	{"NAND 64MiB 1,8V 8-bit",	0x36, 512, 64, 0x4000, 0},
+	{"NAND 64MiB 3,3V 8-bit",	0x76, 512, 64, 0x4000, 0},
+	{"NAND 64MiB 1,8V 16-bit",	0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16},
+	{"NAND 64MiB 3,3V 16-bit",	0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16},
+
+	{"NAND 128MiB 1,8V 8-bit",	0x78, 512, 128, 0x4000, 0},
+	{"NAND 128MiB 1,8V 8-bit",	0x39, 512, 128, 0x4000, 0},
+	{"NAND 128MiB 3,3V 8-bit",	0x79, 512, 128, 0x4000, 0},
+	{"NAND 128MiB 1,8V 16-bit",	0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16},
+	{"NAND 128MiB 1,8V 16-bit",	0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16},
+	{"NAND 128MiB 3,3V 16-bit",	0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16},
+	{"NAND 128MiB 3,3V 16-bit",	0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16},
+
+	{"NAND 256MiB 3,3V 8-bit",	0x71, 512, 256, 0x4000, 0},
+
+	/*
+	 * These are the new chips with large page size. The pagesize and the
+	 * erasesize is determined from the extended id bytes
+	 */
+#define LP_OPTIONS (NAND_SAMSUNG_LP_OPTIONS | NAND_NO_READRDY | NAND_NO_AUTOINCR)
+#define LP_OPTIONS16 (LP_OPTIONS | NAND_BUSWIDTH_16)
+
 	/*512 Megabit */
-	{"NAND 64MiB 1,8V 8-bit", 	0xA2, 0,  64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 64MiB 3,3V 8-bit", 	0xF2, 0,  64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 64MiB 1,8V 16-bit", 	0xB2, 0,  64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-	{"NAND 64MiB 3,3V 16-bit", 	0xC2, 0,  64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+	{"NAND 64MiB 1,8V 8-bit",	0xA2, 0,  64, 0, LP_OPTIONS},
+	{"NAND 64MiB 3,3V 8-bit",	0xF2, 0,  64, 0, LP_OPTIONS},
+	{"NAND 64MiB 1,8V 16-bit",	0xB2, 0,  64, 0, LP_OPTIONS16},
+	{"NAND 64MiB 3,3V 16-bit",	0xC2, 0,  64, 0, LP_OPTIONS16},
 
 	/* 1 Gigabit */
-	{"NAND 128MiB 1,8V 8-bit", 	0xA1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 128MiB 3,3V 8-bit", 	0xF1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 128MiB 1,8V 16-bit", 	0xB1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-	{"NAND 128MiB 3,3V 16-bit", 	0xC1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+	{"NAND 128MiB 1,8V 8-bit",	0xA1, 0, 128, 0, LP_OPTIONS},
+	{"NAND 128MiB 3,3V 8-bit",	0xF1, 0, 128, 0, LP_OPTIONS},
+	{"NAND 128MiB 1,8V 16-bit",	0xB1, 0, 128, 0, LP_OPTIONS16},
+	{"NAND 128MiB 3,3V 16-bit",	0xC1, 0, 128, 0, LP_OPTIONS16},
 
 	/* 2 Gigabit */
-	{"NAND 256MiB 1,8V 8-bit", 	0xAA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 256MiB 3,3V 8-bit", 	0xDA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 256MiB 1,8V 16-bit", 	0xBA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-	{"NAND 256MiB 3,3V 16-bit", 	0xCA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+	{"NAND 256MiB 1,8V 8-bit",	0xAA, 0, 256, 0, LP_OPTIONS},
+	{"NAND 256MiB 3,3V 8-bit",	0xDA, 0, 256, 0, LP_OPTIONS},
+	{"NAND 256MiB 1,8V 16-bit",	0xBA, 0, 256, 0, LP_OPTIONS16},
+	{"NAND 256MiB 3,3V 16-bit",	0xCA, 0, 256, 0, LP_OPTIONS16},
 
 	/* 4 Gigabit */
-	{"NAND 512MiB 1,8V 8-bit", 	0xAC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 512MiB 3,3V 8-bit", 	0xDC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 512MiB 1,8V 16-bit", 	0xBC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-	{"NAND 512MiB 3,3V 16-bit", 	0xCC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+	{"NAND 512MiB 1,8V 8-bit",	0xAC, 0, 512, 0, LP_OPTIONS},
+	{"NAND 512MiB 3,3V 8-bit",	0xDC, 0, 512, 0, LP_OPTIONS},
+	{"NAND 512MiB 1,8V 16-bit",	0xBC, 0, 512, 0, LP_OPTIONS16},
+	{"NAND 512MiB 3,3V 16-bit",	0xCC, 0, 512, 0, LP_OPTIONS16},
 
 	/* 8 Gigabit */
-	{"NAND 1GiB 1,8V 8-bit", 	0xA3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 1GiB 3,3V 8-bit", 	0xD3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 1GiB 1,8V 16-bit", 	0xB3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-	{"NAND 1GiB 3,3V 16-bit", 	0xC3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+	{"NAND 1GiB 1,8V 8-bit",	0xA3, 0, 1024, 0, LP_OPTIONS},
+	{"NAND 1GiB 3,3V 8-bit",	0xD3, 0, 1024, 0, LP_OPTIONS},
+	{"NAND 1GiB 1,8V 16-bit",	0xB3, 0, 1024, 0, LP_OPTIONS16},
+	{"NAND 1GiB 3,3V 16-bit",	0xC3, 0, 1024, 0, LP_OPTIONS16},
 
 	/* 16 Gigabit */
-	{"NAND 2GiB 1,8V 8-bit", 	0xA5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 2GiB 3,3V 8-bit", 	0xD5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
-	{"NAND 2GiB 1,8V 16-bit", 	0xB5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-	{"NAND 2GiB 3,3V 16-bit", 	0xC5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-
-	/* Renesas AND 1 Gigabit. Those chips do not support extended id and have a strange page/block layout !
-	 * The chosen minimum erasesize is 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page planes
-	 * 1 block = 2 pages, but due to plane arrangement the blocks 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7
-	 * Anyway JFFS2 would increase the eraseblock size so we chose a combined one which can be erased in one go
-	 * There are more speed improvements for reads and writes possible, but not implemented now
+	{"NAND 2GiB 1,8V 8-bit",	0xA5, 0, 2048, 0, LP_OPTIONS},
+	{"NAND 2GiB 3,3V 8-bit",	0xD5, 0, 2048, 0, LP_OPTIONS},
+	{"NAND 2GiB 1,8V 16-bit",	0xB5, 0, 2048, 0, LP_OPTIONS16},
+	{"NAND 2GiB 3,3V 16-bit",	0xC5, 0, 2048, 0, LP_OPTIONS16},
+
+	/*
+	 * Renesas AND 1 Gigabit. Those chips do not support extended id and
+	 * have a strange page/block layout !  The chosen minimum erasesize is
+	 * 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page
+	 * planes 1 block = 2 pages, but due to plane arrangement the blocks
+	 * 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7 Anyway JFFS2 would
+	 * increase the eraseblock size so we chose a combined one which can be
+	 * erased in one go There are more speed improvements for reads and
+	 * writes possible, but not implemented now
 	 */
-	{"AND 128MiB 3,3V 8-bit",	0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY | BBT_AUTO_REFRESH},
+	{"AND 128MiB 3,3V 8-bit",	0x01, 2048, 128, 0x4000,
+	 NAND_IS_AND | NAND_NO_AUTOINCR |NAND_NO_READRDY | NAND_4PAGE_ARRAY |
+	 BBT_AUTO_REFRESH
+	},
 
 	{NULL,}
 };
@@ -125,13 +136,13 @@ struct nand_manufacturers nand_manuf_ids[] = {
 	{NAND_MFR_NATIONAL, "National"},
 	{NAND_MFR_RENESAS, "Renesas"},
 	{NAND_MFR_STMICRO, "ST Micro"},
-        {NAND_MFR_HYNIX, "Hynix"},
+	{NAND_MFR_HYNIX, "Hynix"},
 	{0x0, "Unknown"}
 };
 
-EXPORT_SYMBOL (nand_manuf_ids);
-EXPORT_SYMBOL (nand_flash_ids);
+EXPORT_SYMBOL(nand_manuf_ids);
+EXPORT_SYMBOL(nand_flash_ids);
 
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Thomas Gleixner <tglx@linutronix.de>");
-MODULE_DESCRIPTION ("Nand device & manufacturer ID's");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("Nand device & manufacturer IDs");

drivers/mtd/nand/nandsim.c

@@ -369,7 +369,7 @@ init_nandsim(struct mtd_info *mtd)
 	/* Initialize the NAND flash parameters */
 	ns->busw = chip->options & NAND_BUSWIDTH_16 ? 16 : 8;
 	ns->geom.totsz    = mtd->size;
-	ns->geom.pgsz     = mtd->oobblock;
+	ns->geom.pgsz     = mtd->writesize;
 	ns->geom.oobsz    = mtd->oobsize;
 	ns->geom.secsz    = mtd->erasesize;
 	ns->geom.pgszoob  = ns->geom.pgsz + ns->geom.oobsz;
@@ -1071,68 +1071,6 @@ switch_state(struct nandsim *ns)
 	}
 }
 
-static void
-ns_hwcontrol(struct mtd_info *mtd, int cmd)
-{
-	struct nandsim *ns = (struct nandsim *)((struct nand_chip *)mtd->priv)->priv;
-
-	switch (cmd) {
-
-	/* set CLE line high */
-	case NAND_CTL_SETCLE:
-		NS_DBG("ns_hwcontrol: start command latch cycles\n");
-		ns->lines.cle  = 1;
-		break;
-
-	/* set CLE line low */
-	case NAND_CTL_CLRCLE:
-		NS_DBG("ns_hwcontrol: stop command latch cycles\n");
-		ns->lines.cle  = 0;
-		break;
-
-	/* set ALE line high */
-	case NAND_CTL_SETALE:
-		NS_DBG("ns_hwcontrol: start address latch cycles\n");
-		ns->lines.ale   = 1;
-		break;
-
-	/* set ALE line low */
-	case NAND_CTL_CLRALE:
-		NS_DBG("ns_hwcontrol: stop address latch cycles\n");
-		ns->lines.ale  = 0;
-		break;
-
-	/* set WP line high */
-	case NAND_CTL_SETWP:
-		NS_DBG("ns_hwcontrol: enable write protection\n");
-		ns->lines.wp = 1;
-		break;
-
-	/* set WP line low */
-	case NAND_CTL_CLRWP:
-		NS_DBG("ns_hwcontrol: disable write protection\n");
-		ns->lines.wp = 0;
-		break;
-
-	/* set CE line low */
-	case NAND_CTL_SETNCE:
-		NS_DBG("ns_hwcontrol: enable chip\n");
-		ns->lines.ce = 1;
-		break;
-
-	/* set CE line high */
-	case NAND_CTL_CLRNCE:
-		NS_DBG("ns_hwcontrol: disable chip\n");
-		ns->lines.ce = 0;
-		break;
-
-	default:
-		NS_ERR("hwcontrol: unknown command\n");
-        }
-
-	return;
-}
-
 static u_char
 ns_nand_read_byte(struct mtd_info *mtd)
 {
@@ -1359,6 +1297,18 @@ ns_nand_write_byte(struct mtd_info *mtd, u_char byte)
 	return;
 }
 
+static void ns_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int bitmask)
+{
+	struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv;
+
+	ns->lines.cle = bitmask & NAND_CLE ? 1 : 0;
+	ns->lines.ale = bitmask & NAND_ALE ? 1 : 0;
+	ns->lines.ce = bitmask & NAND_NCE ? 1 : 0;
+
+	if (cmd != NAND_CMD_NONE)
+		ns_nand_write_byte(mtd, cmd);
+}
+
 static int
 ns_device_ready(struct mtd_info *mtd)
 {
@@ -1376,17 +1326,6 @@ ns_nand_read_word(struct mtd_info *mtd)
 	return chip->read_byte(mtd) | (chip->read_byte(mtd) << 8);
 }
 
-static void
-ns_nand_write_word(struct mtd_info *mtd, uint16_t word)
-{
-	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
-
-	NS_DBG("write_word\n");
-
-	chip->write_byte(mtd, word & 0xFF);
-	chip->write_byte(mtd, word >> 8);
-}
-
 static void
 ns_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
 {
@@ -1514,16 +1453,14 @@ static int __init ns_init_module(void)
 	/*
 	 * Register simulator's callbacks.
 	 */
-	chip->hwcontrol  = ns_hwcontrol;
+	chip->cmd_ctrl	 = ns_hwcontrol;
 	chip->read_byte  = ns_nand_read_byte;
 	chip->dev_ready  = ns_device_ready;
-	chip->write_byte = ns_nand_write_byte;
 	chip->write_buf  = ns_nand_write_buf;
 	chip->read_buf   = ns_nand_read_buf;
 	chip->verify_buf = ns_nand_verify_buf;
-	chip->write_word = ns_nand_write_word;
 	chip->read_word  = ns_nand_read_word;
-	chip->eccmode    = NAND_ECC_SOFT;
+	chip->ecc.mode   = NAND_ECC_SOFT;
 	chip->options   |= NAND_SKIP_BBTSCAN;
 
 	/*
@@ -1546,6 +1483,8 @@ static int __init ns_init_module(void)
 		chip->options |= NAND_BUSWIDTH_16;
 	}
 
+	nsmtd->owner = THIS_MODULE;
+
 	if ((retval = nand_scan(nsmtd, 1)) != 0) {
 		NS_ERR("can't register NAND Simulator\n");
 		if (retval > 0)

drivers/mtd/nand/ndfc.c

@@ -0,0 +1,311 @@
+/*
+ *  drivers/mtd/ndfc.c
+ *
+ *  Overview:
+ *   Platform independend driver for NDFC (NanD Flash Controller)
+ *   integrated into EP440 cores
+ *
+ *  Author: Thomas Gleixner
+ *
+ *  Copyright 2006 IBM
+ *
+ *  This program is free software; you can redistribute	 it and/or modify it
+ *  under  the terms of	 the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/ndfc.h>
+#include <linux/mtd/mtd.h>
+#include <linux/platform_device.h>
+
+#include <asm/io.h>
+#include <asm/ibm44x.h>
+
+struct ndfc_nand_mtd {
+	struct mtd_info			mtd;
+	struct nand_chip		chip;
+	struct platform_nand_chip	*pl_chip;
+};
+
+static struct ndfc_nand_mtd ndfc_mtd[NDFC_MAX_BANKS];
+
+struct ndfc_controller {
+	void __iomem		*ndfcbase;
+	struct nand_hw_control	ndfc_control;
+	atomic_t		childs_active;
+};
+
+static struct ndfc_controller ndfc_ctrl;
+
+static void ndfc_select_chip(struct mtd_info *mtd, int chip)
+{
+	uint32_t ccr;
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	struct nand_chip *nandchip = mtd->priv;
+	struct ndfc_nand_mtd *nandmtd = nandchip->priv;
+	struct platform_nand_chip *pchip = nandmtd->pl_chip;
+
+	ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR);
+	if (chip >= 0) {
+		ccr &= ~NDFC_CCR_BS_MASK;
+		ccr |= NDFC_CCR_BS(chip + pchip->chip_offset);
+	} else
+		ccr |= NDFC_CCR_RESET_CE;
+	writel(ccr, ndfc->ndfcbase + NDFC_CCR);
+}
+
+static void ndfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+	struct nand_chip *chip = mtd->priv;
+
+	if (cmd == NAND_CMD_NONE)
+		return;
+
+	if (ctrl & NAND_CLE)
+		writel(cmd & 0xFF, chip->IO_ADDR_W + NDFC_CMD);
+	else
+		writel(cmd & 0xFF, chip->IO_ADDR_W + NDFC_ALE);
+}
+
+static int ndfc_ready(struct mtd_info *mtd)
+{
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+
+	return __raw_readl(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY;
+}
+
+static void ndfc_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+	uint32_t ccr;
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+
+	ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR);
+	ccr |= NDFC_CCR_RESET_ECC;
+	__raw_writel(ccr, ndfc->ndfcbase + NDFC_CCR);
+	wmb();
+}
+
+static int ndfc_calculate_ecc(struct mtd_info *mtd,
+			      const u_char *dat, u_char *ecc_code)
+{
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	uint32_t ecc;
+	uint8_t *p = (uint8_t *)&ecc;
+
+	wmb();
+	ecc = __raw_readl(ndfc->ndfcbase + NDFC_ECC);
+	ecc_code[0] = p[1];
+	ecc_code[1] = p[2];
+	ecc_code[2] = p[3];
+
+	return 0;
+}
+
+/*
+ * Speedups for buffer read/write/verify
+ *
+ * NDFC allows 32bit read/write of data. So we can speed up the buffer
+ * functions. No further checking, as nand_base will always read/write
+ * page aligned.
+ */
+static void ndfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	uint32_t *p = (uint32_t *) buf;
+
+	for(;len > 0; len -= 4)
+		*p++ = __raw_readl(ndfc->ndfcbase + NDFC_DATA);
+}
+
+static void ndfc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
+{
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	uint32_t *p = (uint32_t *) buf;
+
+	for(;len > 0; len -= 4)
+		__raw_writel(*p++, ndfc->ndfcbase + NDFC_DATA);
+}
+
+static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
+{
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	uint32_t *p = (uint32_t *) buf;
+
+	for(;len > 0; len -= 4)
+		if (*p++ != __raw_readl(ndfc->ndfcbase + NDFC_DATA))
+			return -EFAULT;
+	return 0;
+}
+
+/*
+ * Initialize chip structure
+ */
+static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
+{
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	struct nand_chip *chip = &mtd->chip;
+
+	chip->IO_ADDR_R = ndfc->ndfcbase + NDFC_DATA;
+	chip->IO_ADDR_W = ndfc->ndfcbase + NDFC_DATA;
+	chip->cmd_ctrl = ndfc_hwcontrol;
+	chip->dev_ready = ndfc_ready;
+	chip->select_chip = ndfc_select_chip;
+	chip->chip_delay = 50;
+	chip->priv = mtd;
+	chip->options = mtd->pl_chip->options;
+	chip->controller = &ndfc->ndfc_control;
+	chip->read_buf = ndfc_read_buf;
+	chip->write_buf = ndfc_write_buf;
+	chip->verify_buf = ndfc_verify_buf;
+	chip->ecc.correct = nand_correct_data;
+	chip->ecc.hwctl = ndfc_enable_hwecc;
+	chip->ecc.calculate = ndfc_calculate_ecc;
+	chip->ecc.mode = NAND_ECC_HW;
+	chip->ecc.size = 256;
+	chip->ecc.bytes = 3;
+	chip->ecclayout = mtd->pl_chip->ecclayout;
+	mtd->mtd.priv = chip;
+	mtd->mtd.owner = THIS_MODULE;
+}
+
+static int ndfc_chip_probe(struct platform_device *pdev)
+{
+	struct platform_nand_chip *nc = pdev->dev.platform_data;
+	struct ndfc_chip_settings *settings = nc->priv;
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	struct ndfc_nand_mtd *nandmtd;
+
+	if (nc->chip_offset >= NDFC_MAX_BANKS || nc->nr_chips > NDFC_MAX_BANKS)
+		return -EINVAL;
+
+	/* Set the bank settings */
+	__raw_writel(settings->bank_settings,
+		     ndfc->ndfcbase + NDFC_BCFG0 + (nc->chip_offset << 2));
+
+	nandmtd = &ndfc_mtd[pdev->id];
+	if (nandmtd->pl_chip)
+		return -EBUSY;
+
+	nandmtd->pl_chip = nc;
+	ndfc_chip_init(nandmtd);
+
+	/* Scan for chips */
+	if (nand_scan(&nandmtd->mtd, nc->nr_chips)) {
+		nandmtd->pl_chip = NULL;
+		return -ENODEV;
+	}
+
+#ifdef CONFIG_MTD_PARTITIONS
+	printk("Number of partitions %d\n", nc->nr_partitions);
+	if (nc->nr_partitions) {
+		/* Add the full device, so complete dumps can be made */
+		add_mtd_device(&nandmtd->mtd);
+		add_mtd_partitions(&nandmtd->mtd, nc->partitions,
+				   nc->nr_partitions);
+
+	} else
+#else
+		add_mtd_device(&nandmtd->mtd);
+#endif
+
+	atomic_inc(&ndfc->childs_active);
+	return 0;
+}
+
+static int ndfc_chip_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static int ndfc_nand_probe(struct platform_device *pdev)
+{
+	struct platform_nand_ctrl *nc = pdev->dev.platform_data;
+	struct ndfc_controller_settings *settings = nc->priv;
+	struct resource *res = pdev->resource;
+	struct ndfc_controller *ndfc = &ndfc_ctrl;
+	unsigned long long phys = settings->ndfc_erpn | res->start;
+
+	ndfc->ndfcbase = ioremap64(phys, res->end - res->start + 1);
+	if (!ndfc->ndfcbase) {
+		printk(KERN_ERR "NDFC: ioremap failed\n");
+		return -EIO;
+	}
+
+	__raw_writel(settings->ccr_settings, ndfc->ndfcbase + NDFC_CCR);
+
+	spin_lock_init(&ndfc->ndfc_control.lock);
+	init_waitqueue_head(&ndfc->ndfc_control.wq);
+
+	platform_set_drvdata(pdev, ndfc);
+
+	printk("NDFC NAND Driver initialized. Chip-Rev: 0x%08x\n",
+	       __raw_readl(ndfc->ndfcbase + NDFC_REVID));
+
+	return 0;
+}
+
+static int ndfc_nand_remove(struct platform_device *pdev)
+{
+	struct ndfc_controller *ndfc = platform_get_drvdata(pdev);
+
+	if (atomic_read(&ndfc->childs_active))
+		return -EBUSY;
+
+	if (ndfc) {
+		platform_set_drvdata(pdev, NULL);
+		iounmap(ndfc_ctrl.ndfcbase);
+		ndfc_ctrl.ndfcbase = NULL;
+	}
+	return 0;
+}
+
+/* driver device registration */
+
+static struct platform_driver ndfc_chip_driver = {
+	.probe		= ndfc_chip_probe,
+	.remove		= ndfc_chip_remove,
+	.driver		= {
+		.name	= "ndfc-chip",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static struct platform_driver ndfc_nand_driver = {
+	.probe		= ndfc_nand_probe,
+	.remove		= ndfc_nand_remove,
+	.driver		= {
+		.name	= "ndfc-nand",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init ndfc_nand_init(void)
+{
+	int ret;
+
+	spin_lock_init(&ndfc_ctrl.ndfc_control.lock);
+	init_waitqueue_head(&ndfc_ctrl.ndfc_control.wq);
+
+	ret = platform_driver_register(&ndfc_nand_driver);
+	if (!ret)
+		ret = platform_driver_register(&ndfc_chip_driver);
+	return ret;
+}
+
+static void __exit ndfc_nand_exit(void)
+{
+	platform_driver_unregister(&ndfc_chip_driver);
+	platform_driver_unregister(&ndfc_nand_driver);
+}
+
+module_init(ndfc_nand_init);
+module_exit(ndfc_nand_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("Platform driver for NDFC");

drivers/mtd/nand/ppchameleonevb.c

@@ -58,21 +58,21 @@
 /*
  * MTD structure for PPChameleonEVB board
  */
-static struct mtd_info *ppchameleon_mtd 	= NULL;
+static struct mtd_info *ppchameleon_mtd = NULL;
 static struct mtd_info *ppchameleonevb_mtd = NULL;
 
 /*
  * Module stuff
  */
-static unsigned long ppchameleon_fio_pbase 	= CFG_NAND0_PADDR;
+static unsigned long ppchameleon_fio_pbase = CFG_NAND0_PADDR;
 static unsigned long ppchameleonevb_fio_pbase = CFG_NAND1_PADDR;
 
 #ifdef MODULE
 module_param(ppchameleon_fio_pbase, ulong, 0);
 module_param(ppchameleonevb_fio_pbase, ulong, 0);
 #else
-__setup("ppchameleon_fio_pbase=",ppchameleon_fio_pbase);
-__setup("ppchameleonevb_fio_pbase=",ppchameleonevb_fio_pbase);
+__setup("ppchameleon_fio_pbase=", ppchameleon_fio_pbase);
+__setup("ppchameleonevb_fio_pbase=", ppchameleonevb_fio_pbase);
 #endif
 
 #ifdef CONFIG_MTD_PARTITIONS
@@ -80,82 +80,96 @@ __setup("ppchameleonevb_fio_pbase=",ppchameleonevb_fio_pbase);
  * Define static partitions for flash devices
  */
 static struct mtd_partition partition_info_hi[] = {
-	{ name: "PPChameleon HI Nand Flash",
-		  offset: 0,
-		  size: 128*1024*1024 }
+      { .name = "PPChameleon HI Nand Flash",
+	offset = 0,
+	.size = 128 * 1024 * 1024
+      }
 };
 
 static struct mtd_partition partition_info_me[] = {
-	{ name: "PPChameleon ME Nand Flash",
-		  offset: 0,
-		  size: 32*1024*1024 }
+      { .name = "PPChameleon ME Nand Flash",
+	.offset = 0,
+	.size = 32 * 1024 * 1024
+      }
 };
 
 static struct mtd_partition partition_info_evb[] = {
-	{ name: "PPChameleonEVB Nand Flash",
-		  offset: 0,
-		  size: 32*1024*1024 }
+      { .name = "PPChameleonEVB Nand Flash",
+	.offset = 0,
+	.size = 32 * 1024 * 1024
+      }
 };
 
 #define NUM_PARTITIONS 1
 
-extern int parse_cmdline_partitions(struct mtd_info *master,
-				    struct mtd_partition **pparts,
-				    const char *mtd_id);
+extern int parse_cmdline_partitions(struct mtd_info *master, struct mtd_partition **pparts, const char *mtd_id);
 #endif
 
-
 /*
  *	hardware specific access to control-lines
  */
-static void ppchameleon_hwcontrol(struct mtd_info *mtdinfo, int cmd)
+static void ppchameleon_hwcontrol(struct mtd_info *mtdinfo, int cmd,
+				  unsigned int ctrl)
 {
-	switch(cmd) {
-
-	case NAND_CTL_SETCLE:
-        	MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND0_PADDR);
-		break;
-	case NAND_CTL_CLRCLE:
-        	MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND0_PADDR);
-		break;
-	case NAND_CTL_SETALE:
-        	MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND0_PADDR);
-		break;
-	case NAND_CTL_CLRALE:
-        	MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND0_PADDR);
-		break;
-	case NAND_CTL_SETNCE:
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+#error Missing headerfiles. No way to fix this. -tglx
+		switch (cmd) {
+		case NAND_CTL_SETCLE:
+			MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND0_PADDR);
+			break;
+		case NAND_CTL_CLRCLE:
+			MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND0_PADDR);
+			break;
+		case NAND_CTL_SETALE:
+			MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND0_PADDR);
+			break;
+		case NAND_CTL_CLRALE:
+			MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND0_PADDR);
+			break;
+		case NAND_CTL_SETNCE:
 			MACRO_NAND_ENABLE_CE((unsigned long)CFG_NAND0_PADDR);
-		break;
-	case NAND_CTL_CLRNCE:
+			break;
+		case NAND_CTL_CLRNCE:
 			MACRO_NAND_DISABLE_CE((unsigned long)CFG_NAND0_PADDR);
-		break;
+			break;
+		}
 	}
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
-static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd)
+static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd,
+				     unsigned int ctrl)
 {
-	switch(cmd) {
-
-	case NAND_CTL_SETCLE:
-        	MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND1_PADDR);
-		break;
-	case NAND_CTL_CLRCLE:
-        	MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND1_PADDR);
-		break;
-	case NAND_CTL_SETALE:
-        	MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND1_PADDR);
-		break;
-	case NAND_CTL_CLRALE:
-        	MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND1_PADDR);
-		break;
-	case NAND_CTL_SETNCE:
-        	MACRO_NAND_ENABLE_CE((unsigned long)CFG_NAND1_PADDR);
-		break;
-	case NAND_CTL_CLRNCE:
-        	MACRO_NAND_DISABLE_CE((unsigned long)CFG_NAND1_PADDR);
-		break;
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+#error Missing headerfiles. No way to fix this. -tglx
+		switch (cmd) {
+		case NAND_CTL_SETCLE:
+			MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND1_PADDR);
+			break;
+		case NAND_CTL_CLRCLE:
+			MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND1_PADDR);
+			break;
+		case NAND_CTL_SETALE:
+			MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND1_PADDR);
+			break;
+		case NAND_CTL_CLRALE:
+			MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND1_PADDR);
+			break;
+		case NAND_CTL_SETNCE:
+			MACRO_NAND_ENABLE_CE((unsigned long)CFG_NAND1_PADDR);
+			break;
+		case NAND_CTL_CLRNCE:
+			MACRO_NAND_DISABLE_CE((unsigned long)CFG_NAND1_PADDR);
+			break;
+		}
 	}
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
 #ifdef USE_READY_BUSY_PIN
@@ -164,15 +178,15 @@ static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd)
  */
 static int ppchameleon_device_ready(struct mtd_info *minfo)
 {
-	if (in_be32((volatile unsigned*)GPIO0_IR) & NAND_RB_GPIO_PIN)
+	if (in_be32((volatile unsigned *)GPIO0_IR) & NAND_RB_GPIO_PIN)
 		return 1;
 	return 0;
 }
 
 static int ppchameleonevb_device_ready(struct mtd_info *minfo)
 {
-	if (in_be32((volatile unsigned*)GPIO0_IR) & NAND_EVB_RB_GPIO_PIN)
-	return 1;
+	if (in_be32((volatile unsigned *)GPIO0_IR) & NAND_EVB_RB_GPIO_PIN)
+		return 1;
 	return 0;
 }
 #endif
@@ -185,7 +199,7 @@ const char *part_probes_evb[] = { "cmdlinepart", NULL };
 /*
  * Main initialization routine
  */
-static int __init ppchameleonevb_init (void)
+static int __init ppchameleonevb_init(void)
 {
 	struct nand_chip *this;
 	const char *part_type = 0;
@@ -194,13 +208,11 @@ static int __init ppchameleonevb_init (void)
 	void __iomem *ppchameleon_fio_base;
 	void __iomem *ppchameleonevb_fio_base;
 
-
 	/*********************************
 	* Processor module NAND (if any) *
 	*********************************/
 	/* Allocate memory for MTD device structure and private data */
-	ppchameleon_mtd = kmalloc(sizeof(struct mtd_info) +
-						      sizeof(struct nand_chip), GFP_KERNEL);
+	ppchameleon_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!ppchameleon_mtd) {
 		printk("Unable to allocate PPChameleon NAND MTD device structure.\n");
 		return -ENOMEM;
@@ -208,63 +220,65 @@ static int __init ppchameleonevb_init (void)
 
 	/* map physical address */
 	ppchameleon_fio_base = ioremap(ppchameleon_fio_pbase, SZ_4M);
-	if(!ppchameleon_fio_base) {
+	if (!ppchameleon_fio_base) {
 		printk("ioremap PPChameleon NAND flash failed\n");
 		kfree(ppchameleon_mtd);
 		return -EIO;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&ppchameleon_mtd[1]);
+	this = (struct nand_chip *)(&ppchameleon_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) ppchameleon_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(ppchameleon_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	ppchameleon_mtd->priv = this;
+	ppchameleon_mtd->owner = THIS_MODULE;
 
-        /* Initialize GPIOs */
+	/* Initialize GPIOs */
 	/* Pin mapping for NAND chip */
 	/*
-		CE	GPIO_01
-		CLE	GPIO_02
-		ALE	GPIO_03
-		R/B	GPIO_04
-	*/
+	   CE   GPIO_01
+	   CLE  GPIO_02
+	   ALE  GPIO_03
+	   R/B  GPIO_04
+	 */
 	/* output select */
-	out_be32((volatile unsigned*)GPIO0_OSRH, in_be32((volatile unsigned*)GPIO0_OSRH) & 0xC0FFFFFF);
+	out_be32((volatile unsigned *)GPIO0_OSRH, in_be32((volatile unsigned *)GPIO0_OSRH) & 0xC0FFFFFF);
 	/* three-state select */
-	out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xC0FFFFFF);
+	out_be32((volatile unsigned *)GPIO0_TSRH, in_be32((volatile unsigned *)GPIO0_TSRH) & 0xC0FFFFFF);
 	/* enable output driver */
-	out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_nCE_GPIO_PIN | NAND_CLE_GPIO_PIN | NAND_ALE_GPIO_PIN);
+	out_be32((volatile unsigned *)GPIO0_TCR,
+		 in_be32((volatile unsigned *)GPIO0_TCR) | NAND_nCE_GPIO_PIN | NAND_CLE_GPIO_PIN | NAND_ALE_GPIO_PIN);
 #ifdef USE_READY_BUSY_PIN
 	/* three-state select */
-	out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xFF3FFFFF);
+	out_be32((volatile unsigned *)GPIO0_TSRH, in_be32((volatile unsigned *)GPIO0_TSRH) & 0xFF3FFFFF);
 	/* high-impedecence */
-	out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) & (~NAND_RB_GPIO_PIN));
+	out_be32((volatile unsigned *)GPIO0_TCR, in_be32((volatile unsigned *)GPIO0_TCR) & (~NAND_RB_GPIO_PIN));
 	/* input select */
-	out_be32((volatile unsigned*)GPIO0_ISR1H, (in_be32((volatile unsigned*)GPIO0_ISR1H) & 0xFF3FFFFF) | 0x00400000);
+	out_be32((volatile unsigned *)GPIO0_ISR1H,
+		 (in_be32((volatile unsigned *)GPIO0_ISR1H) & 0xFF3FFFFF) | 0x00400000);
 #endif
 
 	/* insert callbacks */
 	this->IO_ADDR_R = ppchameleon_fio_base;
 	this->IO_ADDR_W = ppchameleon_fio_base;
-	this->hwcontrol = ppchameleon_hwcontrol;
+	this->cmd_ctrl = ppchameleon_hwcontrol;
 #ifdef USE_READY_BUSY_PIN
 	this->dev_ready = ppchameleon_device_ready;
 #endif
 	this->chip_delay = NAND_BIG_DELAY_US;
 	/* ECC mode */
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
 	/* Scan to find existence of the device (it could not be mounted) */
-	if (nand_scan (ppchameleon_mtd, 1)) {
+	if (nand_scan(ppchameleon_mtd, 1)) {
 		iounmap((void *)ppchameleon_fio_base);
-		kfree (ppchameleon_mtd);
+		kfree(ppchameleon_mtd);
 		goto nand_evb_init;
 	}
-
 #ifndef USE_READY_BUSY_PIN
 	/* Adjust delay if necessary */
 	if (ppchameleon_mtd->size == NAND_SMALL_SIZE)
@@ -275,12 +289,11 @@ static int __init ppchameleonevb_init (void)
 	ppchameleon_mtd->name = "ppchameleon-nand";
 	mtd_parts_nb = parse_mtd_partitions(ppchameleon_mtd, part_probes, &mtd_parts, 0);
 	if (mtd_parts_nb > 0)
-	  part_type = "command line";
+		part_type = "command line";
 	else
-	  mtd_parts_nb = 0;
+		mtd_parts_nb = 0;
 #endif
-	if (mtd_parts_nb == 0)
-	{
+	if (mtd_parts_nb == 0) {
 		if (ppchameleon_mtd->size == NAND_SMALL_SIZE)
 			mtd_parts = partition_info_me;
 		else
@@ -293,13 +306,12 @@ static int __init ppchameleonevb_init (void)
 	printk(KERN_NOTICE "Using %s partition definition\n", part_type);
 	add_mtd_partitions(ppchameleon_mtd, mtd_parts, mtd_parts_nb);
 
-nand_evb_init:
+ nand_evb_init:
 	/****************************
 	* EVB NAND (always present) *
 	****************************/
 	/* Allocate memory for MTD device structure and private data */
-	ppchameleonevb_mtd = kmalloc(sizeof(struct mtd_info) +
-							 sizeof(struct nand_chip), GFP_KERNEL);
+	ppchameleonevb_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!ppchameleonevb_mtd) {
 		printk("Unable to allocate PPChameleonEVB NAND MTD device structure.\n");
 		return -ENOMEM;
@@ -307,77 +319,76 @@ nand_evb_init:
 
 	/* map physical address */
 	ppchameleonevb_fio_base = ioremap(ppchameleonevb_fio_pbase, SZ_4M);
-	if(!ppchameleonevb_fio_base) {
+	if (!ppchameleonevb_fio_base) {
 		printk("ioremap PPChameleonEVB NAND flash failed\n");
 		kfree(ppchameleonevb_mtd);
 		return -EIO;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&ppchameleonevb_mtd[1]);
+	this = (struct nand_chip *)(&ppchameleonevb_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) ppchameleonevb_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(ppchameleonevb_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	ppchameleonevb_mtd->priv = this;
 
-        /* Initialize GPIOs */
+	/* Initialize GPIOs */
 	/* Pin mapping for NAND chip */
 	/*
-		CE	GPIO_14
-		CLE	GPIO_15
-		ALE	GPIO_16
-		R/B	GPIO_31
-	*/
+	   CE   GPIO_14
+	   CLE  GPIO_15
+	   ALE  GPIO_16
+	   R/B  GPIO_31
+	 */
 	/* output select */
-	out_be32((volatile unsigned*)GPIO0_OSRH, in_be32((volatile unsigned*)GPIO0_OSRH) & 0xFFFFFFF0);
-	out_be32((volatile unsigned*)GPIO0_OSRL, in_be32((volatile unsigned*)GPIO0_OSRL) & 0x3FFFFFFF);
+	out_be32((volatile unsigned *)GPIO0_OSRH, in_be32((volatile unsigned *)GPIO0_OSRH) & 0xFFFFFFF0);
+	out_be32((volatile unsigned *)GPIO0_OSRL, in_be32((volatile unsigned *)GPIO0_OSRL) & 0x3FFFFFFF);
 	/* three-state select */
-	out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xFFFFFFF0);
-	out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0x3FFFFFFF);
+	out_be32((volatile unsigned *)GPIO0_TSRH, in_be32((volatile unsigned *)GPIO0_TSRH) & 0xFFFFFFF0);
+	out_be32((volatile unsigned *)GPIO0_TSRL, in_be32((volatile unsigned *)GPIO0_TSRL) & 0x3FFFFFFF);
 	/* enable output driver */
-	out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN |
+	out_be32((volatile unsigned *)GPIO0_TCR, in_be32((volatile unsigned *)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN |
 		 NAND_EVB_CLE_GPIO_PIN | NAND_EVB_ALE_GPIO_PIN);
 #ifdef USE_READY_BUSY_PIN
 	/* three-state select */
-	out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0xFFFFFFFC);
+	out_be32((volatile unsigned *)GPIO0_TSRL, in_be32((volatile unsigned *)GPIO0_TSRL) & 0xFFFFFFFC);
 	/* high-impedecence */
-	out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) & (~NAND_EVB_RB_GPIO_PIN));
+	out_be32((volatile unsigned *)GPIO0_TCR, in_be32((volatile unsigned *)GPIO0_TCR) & (~NAND_EVB_RB_GPIO_PIN));
 	/* input select */
-	out_be32((volatile unsigned*)GPIO0_ISR1L, (in_be32((volatile unsigned*)GPIO0_ISR1L) & 0xFFFFFFFC) | 0x00000001);
+	out_be32((volatile unsigned *)GPIO0_ISR1L,
+		 (in_be32((volatile unsigned *)GPIO0_ISR1L) & 0xFFFFFFFC) | 0x00000001);
 #endif
 
 	/* insert callbacks */
 	this->IO_ADDR_R = ppchameleonevb_fio_base;
 	this->IO_ADDR_W = ppchameleonevb_fio_base;
-	this->hwcontrol = ppchameleonevb_hwcontrol;
+	this->cmd_ctrl = ppchameleonevb_hwcontrol;
 #ifdef USE_READY_BUSY_PIN
 	this->dev_ready = ppchameleonevb_device_ready;
 #endif
 	this->chip_delay = NAND_SMALL_DELAY_US;
 
 	/* ECC mode */
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
 	/* Scan to find existence of the device */
-	if (nand_scan (ppchameleonevb_mtd, 1)) {
+	if (nand_scan(ppchameleonevb_mtd, 1)) {
 		iounmap((void *)ppchameleonevb_fio_base);
-		kfree (ppchameleonevb_mtd);
+		kfree(ppchameleonevb_mtd);
 		return -ENXIO;
 	}
-
 #ifdef CONFIG_MTD_PARTITIONS
 	ppchameleonevb_mtd->name = NAND_EVB_MTD_NAME;
 	mtd_parts_nb = parse_mtd_partitions(ppchameleonevb_mtd, part_probes_evb, &mtd_parts, 0);
 	if (mtd_parts_nb > 0)
-	  part_type = "command line";
+		part_type = "command line";
 	else
-	  mtd_parts_nb = 0;
+		mtd_parts_nb = 0;
 #endif
-	if (mtd_parts_nb == 0)
-	{
+	if (mtd_parts_nb == 0) {
 		mtd_parts = partition_info_evb;
 		mtd_parts_nb = NUM_PARTITIONS;
 		part_type = "static";
@@ -390,18 +401,19 @@ nand_evb_init:
 	/* Return happy */
 	return 0;
 }
+
 module_init(ppchameleonevb_init);
 
 /*
  * Clean up routine
  */
-static void __exit ppchameleonevb_cleanup (void)
+static void __exit ppchameleonevb_cleanup(void)
 {
 	struct nand_chip *this;
 
 	/* Release resources, unregister device(s) */
-	nand_release (ppchameleon_mtd);
-	nand_release (ppchameleonevb_mtd);
+	nand_release(ppchameleon_mtd);
+	nand_release(ppchameleonevb_mtd);
 
 	/* Release iomaps */
 	this = (struct nand_chip *) &ppchameleon_mtd[1];

drivers/mtd/nand/rtc_from4.c

@@ -97,12 +97,12 @@ static struct mtd_info *rtc_from4_mtd = NULL;
 static void __iomem *rtc_from4_fio_base = (void *)P2SEGADDR(RTC_FROM4_FIO_BASE);
 
 static const struct mtd_partition partition_info[] = {
-        {
-                .name   = "Renesas flash partition 1",
-                .offset = 0,
-                .size   = MTDPART_SIZ_FULL
-        },
+	{
+	 .name = "Renesas flash partition 1",
+	 .offset = 0,
+	 .size = MTDPART_SIZ_FULL},
 };
+
 #define NUM_PARTITIONS 1
 
 /*
@@ -111,8 +111,8 @@ static const struct mtd_partition partition_info[] = {
  *		NAND_BBT_CREATE and/or NAND_BBT_WRITE
  *
  */
-static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' };
-static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' };
+static uint8_t bbt_pattern[] = { 'B', 'b', 't', '0' };
+static uint8_t mirror_pattern[] = { '1', 't', 'b', 'B' };
 
 static struct nand_bbt_descr rtc_from4_bbt_main_descr = {
 	.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
@@ -134,8 +134,6 @@ static struct nand_bbt_descr rtc_from4_bbt_mirror_descr = {
 	.pattern = mirror_pattern
 };
 
-
-
 #ifdef RTC_FROM4_HWECC
 
 /* the Reed Solomon control structure */
@@ -144,15 +142,14 @@ static struct rs_control *rs_decoder;
 /*
  *      hardware specific Out Of Band information
  */
-static struct nand_oobinfo rtc_from4_nand_oobinfo = {
-	.useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout rtc_from4_nand_oobinfo = {
 	.eccbytes = 32,
 	.eccpos = {
-		 0,  1,  2,  3,  4,  5,  6,  7,
-		 8,  9, 10, 11, 12, 13, 14, 15,
-		16, 17, 18, 19, 20, 21, 22, 23,
-		24, 25, 26, 27, 28, 29, 30, 31},
-	.oobfree = { {32, 32} }
+		   0, 1, 2, 3, 4, 5, 6, 7,
+		   8, 9, 10, 11, 12, 13, 14, 15,
+		   16, 17, 18, 19, 20, 21, 22, 23,
+		   24, 25, 26, 27, 28, 29, 30, 31},
+	.oobfree = {{32, 32}}
 };
 
 /* Aargh. I missed the reversed bit order, when I
@@ -162,44 +159,42 @@ static struct nand_oobinfo rtc_from4_nand_oobinfo = {
  * of the ecc byte which we get from the FPGA
  */
 static uint8_t revbits[256] = {
-        0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
-        0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
-        0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
-        0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
-        0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
-        0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
-        0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
-        0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
-        0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
-        0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
-        0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
-        0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
-        0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
-        0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
-        0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
-        0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
-        0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
-        0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
-        0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
-        0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
-        0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
-        0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
-        0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
-        0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
-        0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
-        0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
-        0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
-        0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
-        0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
-        0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
-        0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
-        0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
+	0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+	0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+	0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+	0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+	0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+	0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+	0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+	0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+	0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+	0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+	0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+	0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+	0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+	0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+	0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+	0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+	0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+	0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+	0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+	0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+	0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+	0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+	0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+	0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+	0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+	0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+	0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+	0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+	0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+	0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+	0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+	0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
 };
 
 #endif
 
-
-
 /*
  * rtc_from4_hwcontrol - hardware specific access to control-lines
  * @mtd:	MTD device structure
@@ -212,35 +207,20 @@ static uint8_t revbits[256] = {
  * Address lines (A24-A22), so no action is required here.
  *
  */
-static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd)
+static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd,
+				unsigned int ctrl)
 {
-	struct nand_chip* this = (struct nand_chip *) (mtd->priv);
-
-	switch(cmd) {
+	struct nand_chip *chip = (mtd->priv);
 
-	case NAND_CTL_SETCLE:
-		this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_CLE);
-		break;
-	case NAND_CTL_CLRCLE:
-		this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_CLE);
-		break;
-
-	case NAND_CTL_SETALE:
-		this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_ALE);
-		break;
-	case NAND_CTL_CLRALE:
-		this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_ALE);
-		break;
+	if (cmd == NAND_CMD_NONE)
+		return;
 
-	case NAND_CTL_SETNCE:
-		break;
-	case NAND_CTL_CLRNCE:
-		break;
-
-	}
+	if (ctrl & NAND_CLE)
+		writeb(cmd, chip->IO_ADDR_W | RTC_FROM4_CLE);
+	else
+		writeb(cmd, chip->IO_ADDR_W | RTC_FROM4_ALE);
 }
 
-
 /*
  * rtc_from4_nand_select_chip - hardware specific chip select
  * @mtd:	MTD device structure
@@ -252,26 +232,25 @@ static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd)
  */
 static void rtc_from4_nand_select_chip(struct mtd_info *mtd, int chip)
 {
-        struct nand_chip *this = mtd->priv;
+	struct nand_chip *this = mtd->priv;
 
 	this->IO_ADDR_R = (void __iomem *)((unsigned long)this->IO_ADDR_R & ~RTC_FROM4_NAND_ADDR_MASK);
 	this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_NAND_ADDR_MASK);
 
-        switch(chip) {
+	switch (chip) {
 
-        case 0:		/* select slot 3 chip */
+	case 0:		/* select slot 3 chip */
 		this->IO_ADDR_R = (void __iomem *)((unsigned long)this->IO_ADDR_R | RTC_FROM4_NAND_ADDR_SLOT3);
 		this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_NAND_ADDR_SLOT3);
-                break;
-        case 1:		/* select slot 4 chip */
+		break;
+	case 1:		/* select slot 4 chip */
 		this->IO_ADDR_R = (void __iomem *)((unsigned long)this->IO_ADDR_R | RTC_FROM4_NAND_ADDR_SLOT4);
 		this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_NAND_ADDR_SLOT4);
-                break;
+		break;
 
-        }
+	}
 }
 
-
 /*
  * rtc_from4_nand_device_ready - hardware specific ready/busy check
  * @mtd:	MTD device structure
@@ -290,7 +269,6 @@ static int rtc_from4_nand_device_ready(struct mtd_info *mtd)
 
 }
 
-
 /*
  * deplete - code to perform device recovery in case there was a power loss
  * @mtd:	MTD device structure
@@ -306,24 +284,23 @@ static int rtc_from4_nand_device_ready(struct mtd_info *mtd)
  */
 static void deplete(struct mtd_info *mtd, int chip)
 {
-        struct nand_chip *this = mtd->priv;
+	struct nand_chip *this = mtd->priv;
 
-        /* wait until device is ready */
-        while (!this->dev_ready(mtd));
+	/* wait until device is ready */
+	while (!this->dev_ready(mtd)) ;
 
 	this->select_chip(mtd, chip);
 
 	/* Send the commands for device recovery, phase 1 */
-	this->cmdfunc (mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0000);
-	this->cmdfunc (mtd, NAND_CMD_DEPLETE2, -1, -1);
+	this->cmdfunc(mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0000);
+	this->cmdfunc(mtd, NAND_CMD_DEPLETE2, -1, -1);
 
 	/* Send the commands for device recovery, phase 2 */
-	this->cmdfunc (mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0004);
-	this->cmdfunc (mtd, NAND_CMD_DEPLETE2, -1, -1);
+	this->cmdfunc(mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0004);
+	this->cmdfunc(mtd, NAND_CMD_DEPLETE2, -1, -1);
 
 }
 
-
 #ifdef RTC_FROM4_HWECC
 /*
  * rtc_from4_enable_hwecc - hardware specific hardware ECC enable function
@@ -335,39 +312,35 @@ static void deplete(struct mtd_info *mtd, int chip)
  */
 static void rtc_from4_enable_hwecc(struct mtd_info *mtd, int mode)
 {
-	volatile unsigned short * rs_ecc_ctl = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC_CTL);
+	volatile unsigned short *rs_ecc_ctl = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC_CTL);
 	unsigned short status;
 
 	switch (mode) {
-	    case NAND_ECC_READ :
-		status =  RTC_FROM4_RS_ECC_CTL_CLR
-			| RTC_FROM4_RS_ECC_CTL_FD_E;
+	case NAND_ECC_READ:
+		status = RTC_FROM4_RS_ECC_CTL_CLR | RTC_FROM4_RS_ECC_CTL_FD_E;
 
 		*rs_ecc_ctl = status;
 		break;
 
-	    case NAND_ECC_READSYN :
-		status =  0x00;
+	case NAND_ECC_READSYN:
+		status = 0x00;
 
 		*rs_ecc_ctl = status;
 		break;
 
-	    case NAND_ECC_WRITE :
-		status =  RTC_FROM4_RS_ECC_CTL_CLR
-			| RTC_FROM4_RS_ECC_CTL_GEN
-			| RTC_FROM4_RS_ECC_CTL_FD_E;
+	case NAND_ECC_WRITE:
+		status = RTC_FROM4_RS_ECC_CTL_CLR | RTC_FROM4_RS_ECC_CTL_GEN | RTC_FROM4_RS_ECC_CTL_FD_E;
 
 		*rs_ecc_ctl = status;
 		break;
 
-	    default:
+	default:
 		BUG();
 		break;
 	}
 
 }
 
-
 /*
  * rtc_from4_calculate_ecc - hardware specific code to read ECC code
  * @mtd:	MTD device structure
@@ -383,7 +356,7 @@ static void rtc_from4_enable_hwecc(struct mtd_info *mtd, int mode)
  */
 static void rtc_from4_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
 {
-	volatile unsigned short * rs_eccn = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECCN);
+	volatile unsigned short *rs_eccn = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECCN);
 	unsigned short value;
 	int i;
 
@@ -395,7 +368,6 @@ static void rtc_from4_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_c
 	ecc_code[7] |= 0x0f;	/* set the last four bits (not used) */
 }
 
-
 /*
  * rtc_from4_correct_data - hardware specific code to correct data using ECC code
  * @mtd:	MTD device structure
@@ -414,7 +386,7 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha
 	unsigned short status;
 	uint16_t par[6], syn[6];
 	uint8_t ecc[8];
-        volatile unsigned short *rs_ecc;
+	volatile unsigned short *rs_ecc;
 
 	status = *((volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC_CHK));
 
@@ -424,23 +396,18 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha
 
 	/* Read the syndrom pattern from the FPGA and correct the bitorder */
 	rs_ecc = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC);
-        for (i = 0; i < 8; i++) {
-                ecc[i] = revbits[(*rs_ecc) & 0xFF];
-                rs_ecc++;
-        }
+	for (i = 0; i < 8; i++) {
+		ecc[i] = revbits[(*rs_ecc) & 0xFF];
+		rs_ecc++;
+	}
 
 	/* convert into 6 10bit syndrome fields */
-	par[5] = rs_decoder->index_of[(((uint16_t)ecc[0] >> 0) & 0x0ff) |
-				      (((uint16_t)ecc[1] << 8) & 0x300)];
-	par[4] = rs_decoder->index_of[(((uint16_t)ecc[1] >> 2) & 0x03f) |
-				      (((uint16_t)ecc[2] << 6) & 0x3c0)];
-	par[3] = rs_decoder->index_of[(((uint16_t)ecc[2] >> 4) & 0x00f) |
-				      (((uint16_t)ecc[3] << 4) & 0x3f0)];
-	par[2] = rs_decoder->index_of[(((uint16_t)ecc[3] >> 6) & 0x003) |
-				      (((uint16_t)ecc[4] << 2) & 0x3fc)];
-	par[1] = rs_decoder->index_of[(((uint16_t)ecc[5] >> 0) & 0x0ff) |
-				      (((uint16_t)ecc[6] << 8) & 0x300)];
-	par[0] = (((uint16_t)ecc[6] >> 2) & 0x03f) | (((uint16_t)ecc[7] << 6) & 0x3c0);
+	par[5] = rs_decoder->index_of[(((uint16_t) ecc[0] >> 0) & 0x0ff) | (((uint16_t) ecc[1] << 8) & 0x300)];
+	par[4] = rs_decoder->index_of[(((uint16_t) ecc[1] >> 2) & 0x03f) | (((uint16_t) ecc[2] << 6) & 0x3c0)];
+	par[3] = rs_decoder->index_of[(((uint16_t) ecc[2] >> 4) & 0x00f) | (((uint16_t) ecc[3] << 4) & 0x3f0)];
+	par[2] = rs_decoder->index_of[(((uint16_t) ecc[3] >> 6) & 0x003) | (((uint16_t) ecc[4] << 2) & 0x3fc)];
+	par[1] = rs_decoder->index_of[(((uint16_t) ecc[5] >> 0) & 0x0ff) | (((uint16_t) ecc[6] << 8) & 0x300)];
+	par[0] = (((uint16_t) ecc[6] >> 2) & 0x03f) | (((uint16_t) ecc[7] << 6) & 0x3c0);
 
 	/* Convert to computable syndrome */
 	for (i = 0; i < 6; i++) {
@@ -453,16 +420,14 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha
 		syn[i] = rs_decoder->index_of[syn[i]];
 	}
 
-	/* Let the library code do its magic.*/
-	res = decode_rs8(rs_decoder, (uint8_t *)buf, par, 512, syn, 0, NULL, 0xff, NULL);
+	/* Let the library code do its magic. */
+	res = decode_rs8(rs_decoder, (uint8_t *) buf, par, 512, syn, 0, NULL, 0xff, NULL);
 	if (res > 0) {
-		DEBUG (MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: "
-			"ECC corrected %d errors on read\n", res);
+		DEBUG(MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: " "ECC corrected %d errors on read\n", res);
 	}
 	return res;
 }
 
-
 /**
  * rtc_from4_errstat - perform additional error status checks
  * @mtd:	MTD device structure
@@ -478,54 +443,66 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha
  * note: see pages 34..37 of data sheet for details.
  *
  */
-static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page)
+static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this,
+			     int state, int status, int page)
 {
-	int	er_stat=0;
-	int	rtn, retlen;
-	size_t	len;
+	int er_stat = 0;
+	int rtn, retlen;
+	size_t len;
 	uint8_t *buf;
-	int	i;
-
-	this->cmdfunc (mtd, NAND_CMD_STATUS_CLEAR, -1, -1);
-
-        if (state == FL_ERASING) {
-		for (i=0; i<4; i++) {
-			if (status & 1<<(i+1)) {
-				this->cmdfunc (mtd, (NAND_CMD_STATUS_ERROR + i + 1), -1, -1);
-				rtn = this->read_byte(mtd);
-				this->cmdfunc (mtd, NAND_CMD_STATUS_RESET, -1, -1);
-				if (!(rtn & ERR_STAT_ECC_AVAILABLE)) {
-					er_stat |= 1<<(i+1);	/* err_ecc_not_avail */
-				}
-			}
+	int i;
+
+	this->cmdfunc(mtd, NAND_CMD_STATUS_CLEAR, -1, -1);
+
+	if (state == FL_ERASING) {
+
+		for (i = 0; i < 4; i++) {
+			if (!(status & 1 << (i + 1)))
+				continue;
+			this->cmdfunc(mtd, (NAND_CMD_STATUS_ERROR + i + 1),
+				      -1, -1);
+			rtn = this->read_byte(mtd);
+			this->cmdfunc(mtd, NAND_CMD_STATUS_RESET, -1, -1);
+
+			/* err_ecc_not_avail */
+			if (!(rtn & ERR_STAT_ECC_AVAILABLE))
+				er_stat |= 1 << (i + 1);
 		}
+
 	} else if (state == FL_WRITING) {
+
+		unsigned long corrected = mtd->ecc_stats.corrected;
+
 		/* single bank write logic */
-		this->cmdfunc (mtd, NAND_CMD_STATUS_ERROR, -1, -1);
+		this->cmdfunc(mtd, NAND_CMD_STATUS_ERROR, -1, -1);
 		rtn = this->read_byte(mtd);
-		this->cmdfunc (mtd, NAND_CMD_STATUS_RESET, -1, -1);
+		this->cmdfunc(mtd, NAND_CMD_STATUS_RESET, -1, -1);
+
 		if (!(rtn & ERR_STAT_ECC_AVAILABLE)) {
-			er_stat |= 1<<1;	/* err_ecc_not_avail */
-		} else {
-			len = mtd->oobblock;
-			buf = kmalloc (len, GFP_KERNEL);
-			if (!buf) {
-				printk (KERN_ERR "rtc_from4_errstat: Out of memory!\n");
-				er_stat = 1;			/* if we can't check, assume failed */
-			} else {
-				/* recovery read */
-				/* page read */
-				rtn = nand_do_read_ecc (mtd, page, len, &retlen, buf, NULL, this->autooob, 1);
-				if (rtn) {	/* if read failed or > 1-bit error corrected */
-					er_stat |= 1<<1;	/* ECC read failed */
-				}
-				kfree(buf);
-			}
+			/* err_ecc_not_avail */
+			er_stat |= 1 << 1;
+			goto out;
+		}
+
+		len = mtd->writesize;
+		buf = kmalloc(len, GFP_KERNEL);
+		if (!buf) {
+			printk(KERN_ERR "rtc_from4_errstat: Out of memory!\n");
+			er_stat = 1;
+			goto out;
 		}
+
+		/* recovery read */
+		rtn = nand_do_read(mtd, page, len, &retlen, buf);
+
+		/* if read failed or > 1-bit error corrected */
+		if (rtn || (mtd->ecc_stats.corrected - corrected) > 1) {
+			er_stat |= 1 << 1;
+		kfree(buf);
 	}
 
 	rtn = status;
-	if (er_stat == 0) {				/* if ECC is available   */
+	if (er_stat == 0) {	/* if ECC is available   */
 		rtn = (status & ~NAND_STATUS_FAIL);	/*   clear the error bit */
 	}
 
@@ -533,33 +510,32 @@ static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, int s
 }
 #endif
 
-
 /*
  * Main initialization routine
  */
-int __init rtc_from4_init (void)
+static int __init rtc_from4_init(void)
 {
 	struct nand_chip *this;
 	unsigned short bcr1, bcr2, wcr2;
 	int i;
 
 	/* Allocate memory for MTD device structure and private data */
-	rtc_from4_mtd = kmalloc(sizeof(struct mtd_info) + sizeof (struct nand_chip),
-				GFP_KERNEL);
+	rtc_from4_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!rtc_from4_mtd) {
-		printk ("Unable to allocate Renesas NAND MTD device structure.\n");
+		printk("Unable to allocate Renesas NAND MTD device structure.\n");
 		return -ENOMEM;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&rtc_from4_mtd[1]);
+	this = (struct nand_chip *)(&rtc_from4_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) rtc_from4_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(rtc_from4_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	rtc_from4_mtd->priv = this;
+	rtc_from4_mtd->owner = THIS_MODULE;
 
 	/* set area 5 as PCMCIA mode to clear the spec of tDH(Data hold time;9ns min) */
 	bcr1 = *SH77X9_BCR1 & ~0x0002;
@@ -580,9 +556,9 @@ int __init rtc_from4_init (void)
 	this->IO_ADDR_R = rtc_from4_fio_base;
 	this->IO_ADDR_W = rtc_from4_fio_base;
 	/* Set address of hardware control function */
-	this->hwcontrol = rtc_from4_hwcontrol;
+	this->cmd_ctrl = rtc_from4_hwcontrol;
 	/* Set address of chip select function */
-        this->select_chip = rtc_from4_nand_select_chip;
+	this->select_chip = rtc_from4_nand_select_chip;
 	/* command delay time (in us) */
 	this->chip_delay = 100;
 	/* return the status of the Ready/Busy line */
@@ -591,19 +567,20 @@ int __init rtc_from4_init (void)
 #ifdef RTC_FROM4_HWECC
 	printk(KERN_INFO "rtc_from4_init: using hardware ECC detection.\n");
 
-        this->eccmode = NAND_ECC_HW8_512;
-	this->options |= NAND_HWECC_SYNDROME;
+	this->ecc.mode = NAND_ECC_HW_SYNDROME;
+	this->ecc.size = 512;
+	this->ecc.bytes = 8;
 	/* return the status of extra status and ECC checks */
 	this->errstat = rtc_from4_errstat;
 	/* set the nand_oobinfo to support FPGA H/W error detection */
-	this->autooob = &rtc_from4_nand_oobinfo;
-	this->enable_hwecc = rtc_from4_enable_hwecc;
-	this->calculate_ecc = rtc_from4_calculate_ecc;
-	this->correct_data = rtc_from4_correct_data;
+	this->ecc.layout = &rtc_from4_nand_oobinfo;
+	this->ecc.hwctl = rtc_from4_enable_hwecc;
+	this->ecc.calculate = rtc_from4_calculate_ecc;
+	this->ecc.correct = rtc_from4_correct_data;
 #else
 	printk(KERN_INFO "rtc_from4_init: using software ECC detection.\n");
 
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 #endif
 
 	/* set the bad block tables to support debugging */
@@ -617,7 +594,7 @@ int __init rtc_from4_init (void)
 	}
 
 	/* Perform 'device recovery' for each chip in case there was a power loss. */
-	for (i=0; i < this->numchips; i++) {
+	for (i = 0; i < this->numchips; i++) {
 		deplete(rtc_from4_mtd, i);
 	}
 
@@ -643,7 +620,7 @@ int __init rtc_from4_init (void)
 	 */
 	rs_decoder = init_rs(10, 0x409, 0, 1, 6);
 	if (!rs_decoder) {
-		printk (KERN_ERR "Could not create a RS decoder\n");
+		printk(KERN_ERR "Could not create a RS decoder\n");
 		nand_release(rtc_from4_mtd);
 		kfree(rtc_from4_mtd);
 		return -ENOMEM;
@@ -652,20 +629,19 @@ int __init rtc_from4_init (void)
 	/* Return happy */
 	return 0;
 }
-module_init(rtc_from4_init);
 
+module_init(rtc_from4_init);
 
 /*
  * Clean up routine
  */
-#ifdef MODULE
-static void __exit rtc_from4_cleanup (void)
+static void __exit rtc_from4_cleanup(void)
 {
 	/* Release resource, unregister partitions */
 	nand_release(rtc_from4_mtd);
 
 	/* Free the MTD device structure */
-	kfree (rtc_from4_mtd);
+	kfree(rtc_from4_mtd);
 
 #ifdef RTC_FROM4_HWECC
 	/* Free the reed solomon resources */
@@ -674,10 +650,9 @@ static void __exit rtc_from4_cleanup (void)
 	}
 #endif
 }
+
 module_exit(rtc_from4_cleanup);
-#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("d.marlin <dmarlin@redhat.com");
 MODULE_DESCRIPTION("Board-specific glue layer for AG-AND flash on Renesas FROM_BOARD4");
-

drivers/mtd/nand/s3c2410.c

@@ -18,8 +18,9 @@
  *	20-Jun-2005  BJD  Updated s3c2440 support, fixed timing bug
  *	08-Jul-2005  BJD  Fix OOPS when no platform data supplied
  *	20-Oct-2005  BJD  Fix timing calculation bug
+ *	14-Jan-2006  BJD  Allow clock to be stopped when idle
  *
- * $Id: s3c2410.c,v 1.20 2005/11/07 11:14:31 gleixner Exp $
+ * $Id: s3c2410.c,v 1.23 2006/04/01 18:06:29 bjd Exp $
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -36,9 +37,6 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 
-#include <config/mtd/nand/s3c2410/hwecc.h>
-#include <config/mtd/nand/s3c2410/debug.h>
-
 #ifdef CONFIG_MTD_NAND_S3C2410_DEBUG
 #define DEBUG
 #endif
@@ -73,14 +71,20 @@ static int hardware_ecc = 1;
 static int hardware_ecc = 0;
 #endif
 
+#ifdef CONFIG_MTD_NAND_S3C2410_CLKSTOP
+static int clock_stop = 1;
+#else
+static const int clock_stop = 0;
+#endif
+
+
 /* new oob placement block for use with hardware ecc generation
  */
 
-static struct nand_oobinfo nand_hw_eccoob = {
-	.useecc		= MTD_NANDECC_AUTOPLACE,
-	.eccbytes	= 3,
-	.eccpos		= {0, 1, 2 },
-	.oobfree	= { {8, 8} }
+static struct nand_ecclayout nand_hw_eccoob = {
+	.eccbytes = 3,
+	.eccpos = {0, 1, 2},
+	.oobfree = {{8, 8}}
 };
 
 /* controller and mtd information */
@@ -135,6 +139,11 @@ static struct s3c2410_platform_nand *to_nand_plat(struct platform_device *dev)
 	return dev->dev.platform_data;
 }
 
+static inline int allow_clk_stop(struct s3c2410_nand_info *info)
+{
+	return clock_stop;
+}
+
 /* timing calculations */
 
 #define NS_IN_KHZ 1000000
@@ -149,8 +158,7 @@ static int s3c2410_nand_calc_rate(int wanted, unsigned long clk, int max)
 	pr_debug("result %d from %ld, %d\n", result, clk, wanted);
 
 	if (result > max) {
-		printk("%d ns is too big for current clock rate %ld\n",
-		       wanted, clk);
+		printk("%d ns is too big for current clock rate %ld\n", wanted, clk);
 		return -1;
 	}
 
@@ -164,8 +172,7 @@ static int s3c2410_nand_calc_rate(int wanted, unsigned long clk, int max)
 
 /* controller setup */
 
-static int s3c2410_nand_inithw(struct s3c2410_nand_info *info,
-			       struct platform_device *pdev)
+static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, struct platform_device *pdev)
 {
 	struct s3c2410_platform_nand *plat = to_nand_plat(pdev);
 	unsigned long clkrate = clk_get_rate(info->clk);
@@ -177,7 +184,7 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info,
 	clkrate /= 1000;	/* turn clock into kHz for ease of use */
 
 	if (plat != NULL) {
-		tacls  = s3c2410_nand_calc_rate(plat->tacls, clkrate, 4);
+		tacls = s3c2410_nand_calc_rate(plat->tacls, clkrate, 4);
 		twrph0 = s3c2410_nand_calc_rate(plat->twrph0, clkrate, 8);
 		twrph1 = s3c2410_nand_calc_rate(plat->twrph1, clkrate, 8);
 	} else {
@@ -193,19 +200,22 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info,
 	}
 
 	printk(KERN_INFO PFX "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n",
-	       tacls, to_ns(tacls, clkrate),
-	       twrph0, to_ns(twrph0, clkrate),
-	       twrph1, to_ns(twrph1, clkrate));
+	       tacls, to_ns(tacls, clkrate), twrph0, to_ns(twrph0, clkrate), twrph1, to_ns(twrph1, clkrate));
 
 	if (!info->is_s3c2440) {
-		cfg  = S3C2410_NFCONF_EN;
-		cfg |= S3C2410_NFCONF_TACLS(tacls-1);
-		cfg |= S3C2410_NFCONF_TWRPH0(twrph0-1);
-		cfg |= S3C2410_NFCONF_TWRPH1(twrph1-1);
+		cfg = S3C2410_NFCONF_EN;
+		cfg |= S3C2410_NFCONF_TACLS(tacls - 1);
+		cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1);
+		cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1);
 	} else {
-		cfg   = S3C2440_NFCONF_TACLS(tacls-1);
-		cfg  |= S3C2440_NFCONF_TWRPH0(twrph0-1);
-		cfg  |= S3C2440_NFCONF_TWRPH1(twrph1-1);
+		cfg = S3C2440_NFCONF_TACLS(tacls - 1);
+		cfg |= S3C2440_NFCONF_TWRPH0(twrph0 - 1);
+		cfg |= S3C2440_NFCONF_TWRPH1(twrph1 - 1);
+
+		/* enable the controller and de-assert nFCE */
+
+		writel(S3C2440_NFCONT_ENABLE | S3C2440_NFCONT_ENABLE,
+		       info->regs + S3C2440_NFCONT);
 	}
 
 	pr_debug(PFX "NF_CONF is 0x%lx\n", cfg);
@@ -229,7 +239,10 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip)
 	info = nmtd->info;
 
 	bit = (info->is_s3c2440) ? S3C2440_NFCONT_nFCE : S3C2410_NFCONF_nFCE;
-	reg = info->regs+((info->is_s3c2440) ? S3C2440_NFCONT:S3C2410_NFCONF);
+	reg = info->regs + ((info->is_s3c2440) ? S3C2440_NFCONT : S3C2410_NFCONF);
+
+	if (chip != -1 && allow_clk_stop(info))
+		clk_enable(info->clk);
 
 	cur = readl(reg);
 
@@ -243,77 +256,51 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip)
 
 		if (info->platform != NULL) {
 			if (info->platform->select_chip != NULL)
-				(info->platform->select_chip)(nmtd->set, chip);
+				(info->platform->select_chip) (nmtd->set, chip);
 		}
 
 		cur &= ~bit;
 	}
 
 	writel(cur, reg);
+
+	if (chip == -1 && allow_clk_stop(info))
+		clk_disable(info->clk);
 }
 
-/* command and control functions
- *
- * Note, these all use tglx's method of changing the IO_ADDR_W field
- * to make the code simpler, and use the nand layer's code to issue the
- * command and address sequences via the proper IO ports.
+/* s3c2410_nand_hwcontrol
  *
+ * Issue command and address cycles to the chip
 */
 
-static void s3c2410_nand_hwcontrol(struct mtd_info *mtd, int cmd)
+static void s3c2410_nand_hwcontrol(struct mtd_info *mtd, int cmd,
+				   unsigned int ctrl)
 {
 	struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
-	struct nand_chip *chip = mtd->priv;
-
-	switch (cmd) {
-	case NAND_CTL_SETNCE:
-	case NAND_CTL_CLRNCE:
-		printk(KERN_ERR "%s: called for NCE\n", __FUNCTION__);
-		break;
-
-	case NAND_CTL_SETCLE:
-		chip->IO_ADDR_W = info->regs + S3C2410_NFCMD;
-		break;
-
-	case NAND_CTL_SETALE:
-		chip->IO_ADDR_W = info->regs + S3C2410_NFADDR;
-		break;
-
-		/* NAND_CTL_CLRCLE: */
-		/* NAND_CTL_CLRALE: */
-	default:
-		chip->IO_ADDR_W = info->regs + S3C2410_NFDATA;
-		break;
-	}
+	
+	if (cmd == NAND_CMD_NONE)
+		return;
+
+	if (ctrl & NAND_CLE)
+		writeb(cmd, info->regs + S3C2410_NFCMD);
+	else
+		writeb(cmd, info->regs + S3C2410_NFADDR);
 }
 
 /* command and control functions */
 
-static void s3c2440_nand_hwcontrol(struct mtd_info *mtd, int cmd)
+static void s3c2440_nand_hwcontrol(struct mtd_info *mtd, int cmd,
+				   unsigned int ctrl)
 {
 	struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
-	struct nand_chip *chip = mtd->priv;
-
-	switch (cmd) {
-	case NAND_CTL_SETNCE:
-	case NAND_CTL_CLRNCE:
-		printk(KERN_ERR "%s: called for NCE\n", __FUNCTION__);
-		break;
-
-	case NAND_CTL_SETCLE:
-		chip->IO_ADDR_W = info->regs + S3C2440_NFCMD;
-		break;
-
-	case NAND_CTL_SETALE:
-		chip->IO_ADDR_W = info->regs + S3C2440_NFADDR;
-		break;
-
-		/* NAND_CTL_CLRCLE: */
-		/* NAND_CTL_CLRALE: */
-	default:
-		chip->IO_ADDR_W = info->regs + S3C2440_NFDATA;
-		break;
-	}
+
+	if (cmd == NAND_CMD_NONE)
+		return;
+
+	if (ctrl & NAND_CLE)
+		writeb(cmd, info->regs + S3C2440_NFCMD);
+	else
+		writeb(cmd, info->regs + S3C2440_NFADDR);
 }
 
 /* s3c2410_nand_devready()
@@ -330,22 +317,16 @@ static int s3c2410_nand_devready(struct mtd_info *mtd)
 	return readb(info->regs + S3C2410_NFSTAT) & S3C2410_NFSTAT_BUSY;
 }
 
-
 /* ECC handling functions */
 
-static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
-				     u_char *read_ecc, u_char *calc_ecc)
+static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
 {
-	pr_debug("s3c2410_nand_correct_data(%p,%p,%p,%p)\n",
-		 mtd, dat, read_ecc, calc_ecc);
+	pr_debug("s3c2410_nand_correct_data(%p,%p,%p,%p)\n", mtd, dat, read_ecc, calc_ecc);
 
 	pr_debug("eccs: read %02x,%02x,%02x vs calc %02x,%02x,%02x\n",
-		 read_ecc[0], read_ecc[1], read_ecc[2],
-		 calc_ecc[0], calc_ecc[1], calc_ecc[2]);
+		 read_ecc[0], read_ecc[1], read_ecc[2], calc_ecc[0], calc_ecc[1], calc_ecc[2]);
 
-	if (read_ecc[0] == calc_ecc[0] &&
-	    read_ecc[1] == calc_ecc[1] &&
-	    read_ecc[2] == calc_ecc[2])
+	if (read_ecc[0] == calc_ecc[0] && read_ecc[1] == calc_ecc[1] && read_ecc[2] == calc_ecc[2])
 		return 0;
 
 	/* we curently have no method for correcting the error */
@@ -378,8 +359,7 @@ static void s3c2440_nand_enable_hwecc(struct mtd_info *mtd, int mode)
 	writel(ctrl | S3C2440_NFCONT_INITECC, info->regs + S3C2440_NFCONT);
 }
 
-static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd,
-				      const u_char *dat, u_char *ecc_code)
+static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
 {
 	struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
 
@@ -387,15 +367,12 @@ static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd,
 	ecc_code[1] = readb(info->regs + S3C2410_NFECC + 1);
 	ecc_code[2] = readb(info->regs + S3C2410_NFECC + 2);
 
-	pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n",
-		 ecc_code[0], ecc_code[1], ecc_code[2]);
+	pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", ecc_code[0], ecc_code[1], ecc_code[2]);
 
 	return 0;
 }
 
-
-static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd,
-				      const u_char *dat, u_char *ecc_code)
+static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
 {
 	struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
 	unsigned long ecc = readl(info->regs + S3C2440_NFMECC0);
@@ -404,13 +381,11 @@ static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd,
 	ecc_code[1] = ecc >> 8;
 	ecc_code[2] = ecc >> 16;
 
-	pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n",
-		 ecc_code[0], ecc_code[1], ecc_code[2]);
+	pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", ecc_code[0], ecc_code[1], ecc_code[2]);
 
 	return 0;
 }
 
-
 /* over-ride the standard functions for a little more speed. We can
  * use read/write block to move the data buffers to/from the controller
 */
@@ -421,8 +396,7 @@ static void s3c2410_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 	readsb(this->IO_ADDR_R, buf, len);
 }
 
-static void s3c2410_nand_write_buf(struct mtd_info *mtd,
-				   const u_char *buf, int len)
+static void s3c2410_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
 {
 	struct nand_chip *this = mtd->priv;
 	writesb(this->IO_ADDR_W, buf, len);
@@ -459,7 +433,8 @@ static int s3c2410_nand_remove(struct platform_device *pdev)
 	/* free the common resources */
 
 	if (info->clk != NULL && !IS_ERR(info->clk)) {
-		clk_disable(info->clk);
+		if (!allow_clk_stop(info))
+			clk_disable(info->clk);
 		clk_put(info->clk);
 	}
 
@@ -488,9 +463,7 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info,
 		return add_mtd_device(&mtd->mtd);
 
 	if (set->nr_partitions > 0 && set->partitions != NULL) {
-		return add_mtd_partitions(&mtd->mtd,
-					  set->partitions,
-					  set->nr_partitions);
+		return add_mtd_partitions(&mtd->mtd, set->partitions, set->nr_partitions);
 	}
 
 	return add_mtd_device(&mtd->mtd);
@@ -517,7 +490,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
 
 	chip->IO_ADDR_R	   = info->regs + S3C2410_NFDATA;
 	chip->IO_ADDR_W    = info->regs + S3C2410_NFDATA;
-	chip->hwcontrol    = s3c2410_nand_hwcontrol;
+	chip->cmd_ctrl     = s3c2410_nand_hwcontrol;
 	chip->dev_ready    = s3c2410_nand_devready;
 	chip->write_buf    = s3c2410_nand_write_buf;
 	chip->read_buf     = s3c2410_nand_read_buf;
@@ -530,26 +503,29 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
 	if (info->is_s3c2440) {
 		chip->IO_ADDR_R	 = info->regs + S3C2440_NFDATA;
 		chip->IO_ADDR_W  = info->regs + S3C2440_NFDATA;
-		chip->hwcontrol  = s3c2440_nand_hwcontrol;
+		chip->cmd_ctrl   = s3c2440_nand_hwcontrol;
 	}
 
 	nmtd->info	   = info;
 	nmtd->mtd.priv	   = chip;
+	nmtd->mtd.owner    = THIS_MODULE;
 	nmtd->set	   = set;
 
 	if (hardware_ecc) {
-		chip->correct_data  = s3c2410_nand_correct_data;
-		chip->enable_hwecc  = s3c2410_nand_enable_hwecc;
-		chip->calculate_ecc = s3c2410_nand_calculate_ecc;
-		chip->eccmode	    = NAND_ECC_HW3_512;
-		chip->autooob       = &nand_hw_eccoob;
+		chip->ecc.correct   = s3c2410_nand_correct_data;
+		chip->ecc.hwctl	    = s3c2410_nand_enable_hwecc;
+		chip->ecc.calculate = s3c2410_nand_calculate_ecc;
+		chip->ecc.mode	    = NAND_ECC_HW;
+		chip->ecc.size	    = 512;
+		chip->ecc.bytes	    = 3;
+		chip->ecc.layout    = &nand_hw_eccoob;
 
 		if (info->is_s3c2440) {
-			chip->enable_hwecc  = s3c2440_nand_enable_hwecc;
-			chip->calculate_ecc = s3c2440_nand_calculate_ecc;
+			chip->ecc.hwctl     = s3c2440_nand_enable_hwecc;
+			chip->ecc.calculate = s3c2440_nand_calculate_ecc;
 		}
 	} else {
-		chip->eccmode	    = NAND_ECC_SOFT;
+		chip->ecc.mode	    = NAND_ECC_SOFT;
 	}
 }
 
@@ -654,13 +630,11 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440)
 	nmtd = info->mtds;
 
 	for (setno = 0; setno < nr_sets; setno++, nmtd++) {
-		pr_debug("initialising set %d (%p, info %p)\n",
-			 setno, nmtd, info);
+		pr_debug("initialising set %d (%p, info %p)\n", setno, nmtd, info);
 
 		s3c2410_nand_init_chip(info, nmtd, sets);
 
-		nmtd->scan_res = nand_scan(&nmtd->mtd,
-					   (sets) ? sets->nr_chips : 1);
+		nmtd->scan_res = nand_scan(&nmtd->mtd, (sets) ? sets->nr_chips : 1);
 
 		if (nmtd->scan_res == 0) {
 			s3c2410_nand_add_partition(info, nmtd, sets);
@@ -670,6 +644,11 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440)
 			sets++;
 	}
 
+	if (allow_clk_stop(info)) {
+		dev_info(&pdev->dev, "clock idle support enabled\n");
+		clk_disable(info->clk);
+	}
+
 	pr_debug("initialised ok\n");
 	return 0;
 
@@ -681,6 +660,41 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440)
 	return err;
 }
 
+/* PM Support */
+#ifdef CONFIG_PM
+
+static int s3c24xx_nand_suspend(struct platform_device *dev, pm_message_t pm)
+{
+	struct s3c2410_nand_info *info = platform_get_drvdata(dev);
+
+	if (info) {
+		if (!allow_clk_stop(info))
+			clk_disable(info->clk);
+	}
+
+	return 0;
+}
+
+static int s3c24xx_nand_resume(struct platform_device *dev)
+{
+	struct s3c2410_nand_info *info = platform_get_drvdata(dev);
+
+	if (info) {
+		clk_enable(info->clk);
+		s3c2410_nand_inithw(info, dev);
+
+		if (allow_clk_stop(info))
+			clk_disable(info->clk);
+	}
+
+	return 0;
+}
+
+#else
+#define s3c24xx_nand_suspend NULL
+#define s3c24xx_nand_resume NULL
+#endif
+
 /* driver device registration */
 
 static int s3c2410_nand_probe(struct platform_device *dev)
@@ -696,6 +710,8 @@ static int s3c2440_nand_probe(struct platform_device *dev)
 static struct platform_driver s3c2410_nand_driver = {
 	.probe		= s3c2410_nand_probe,
 	.remove		= s3c2410_nand_remove,
+	.suspend	= s3c24xx_nand_suspend,
+	.resume		= s3c24xx_nand_resume,
 	.driver		= {
 		.name	= "s3c2410-nand",
 		.owner	= THIS_MODULE,
@@ -705,6 +721,8 @@ static struct platform_driver s3c2410_nand_driver = {
 static struct platform_driver s3c2440_nand_driver = {
 	.probe		= s3c2440_nand_probe,
 	.remove		= s3c2410_nand_remove,
+	.suspend	= s3c24xx_nand_suspend,
+	.resume		= s3c24xx_nand_resume,
 	.driver		= {
 		.name	= "s3c2440-nand",
 		.owner	= THIS_MODULE,

drivers/mtd/nand/sharpsl.c

@@ -46,7 +46,6 @@ static int sharpsl_phys_base = 0x0C000000;
 #define FLCLE		(1 << 1)
 #define FLCE0		(1 << 0)
 
-
 /*
  * MTD structure for SharpSL
  */
@@ -60,50 +59,44 @@ static struct mtd_info *sharpsl_mtd = NULL;
 static int nr_partitions;
 static struct mtd_partition sharpsl_nand_default_partition_info[] = {
 	{
-	.name = "System Area",
-	.offset = 0,
-	.size = 7 * 1024 * 1024,
-	},
+	 .name = "System Area",
+	 .offset = 0,
+	 .size = 7 * 1024 * 1024,
+	 },
 	{
-	.name = "Root Filesystem",
-	.offset = 7 * 1024 * 1024,
-	.size = 30 * 1024 * 1024,
-	},
+	 .name = "Root Filesystem",
+	 .offset = 7 * 1024 * 1024,
+	 .size = 30 * 1024 * 1024,
+	 },
 	{
-	.name = "Home Filesystem",
-	.offset = MTDPART_OFS_APPEND ,
-	.size = MTDPART_SIZ_FULL ,
-	},
+	 .name = "Home Filesystem",
+	 .offset = MTDPART_OFS_APPEND,
+	 .size = MTDPART_SIZ_FULL,
+	 },
 };
 
 /*
  *	hardware specific access to control-lines
+ *	ctrl:
+ *	NAND_CNE: bit 0 -> bit 0 & 4
+ *	NAND_CLE: bit 1 -> bit 1
+ *	NAND_ALE: bit 2 -> bit 2
+ *
  */
-static void
-sharpsl_nand_hwcontrol(struct mtd_info* mtd, int cmd)
+static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
+				   unsigned int ctrl)
 {
-	switch (cmd) {
-	case NAND_CTL_SETCLE:
-		writeb(readb(FLASHCTL) | FLCLE, FLASHCTL);
-		break;
-	case NAND_CTL_CLRCLE:
-		writeb(readb(FLASHCTL) & ~FLCLE, FLASHCTL);
-		break;
-
-	case NAND_CTL_SETALE:
-		writeb(readb(FLASHCTL) | FLALE, FLASHCTL);
-		break;
-	case NAND_CTL_CLRALE:
-		writeb(readb(FLASHCTL) & ~FLALE, FLASHCTL);
-		break;
-
-	case NAND_CTL_SETNCE:
-		writeb(readb(FLASHCTL) & ~(FLCE0|FLCE1), FLASHCTL);
-		break;
-	case NAND_CTL_CLRNCE:
-		writeb(readb(FLASHCTL) | (FLCE0|FLCE1), FLASHCTL);
-		break;
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned char bits = ctrl & 0x07;
+
+		bits |= (ctrl & 0x01) << 4;
+		writeb((readb(FLASHCTL) & 0x17) | bits, FLASHCTL);
 	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
 static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
@@ -122,31 +115,26 @@ static struct nand_bbt_descr sharpsl_akita_bbt = {
 	.pattern = scan_ff_pattern
 };
 
-static struct nand_oobinfo akita_oobinfo = {
-	.useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout akita_oobinfo = {
 	.eccbytes = 24,
 	.eccpos = {
-		0x5,  0x1,  0x2,  0x3,  0x6,  0x7,  0x15, 0x11,
-		0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
-		0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
-	.oobfree = { {0x08, 0x09} }
+		   0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
+		   0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
+		   0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
+	.oobfree = {{0x08, 0x09}}
 };
 
-static int
-sharpsl_nand_dev_ready(struct mtd_info* mtd)
+static int sharpsl_nand_dev_ready(struct mtd_info *mtd)
 {
 	return !((readb(FLASHCTL) & FLRYBY) == 0);
 }
 
-static void
-sharpsl_nand_enable_hwecc(struct mtd_info* mtd, int mode)
+static void sharpsl_nand_enable_hwecc(struct mtd_info *mtd, int mode)
 {
-	writeb(0 ,ECCCLRR);
+	writeb(0, ECCCLRR);
 }
 
-static int
-sharpsl_nand_calculate_ecc(struct mtd_info* mtd, const u_char* dat,
-				u_char* ecc_code)
+static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, u_char * ecc_code)
 {
 	ecc_code[0] = ~readb(ECCLPUB);
 	ecc_code[1] = ~readb(ECCLPLB);
@@ -154,47 +142,44 @@ sharpsl_nand_calculate_ecc(struct mtd_info* mtd, const u_char* dat,
 	return readb(ECCCNTR) != 0;
 }
 
-
 #ifdef CONFIG_MTD_PARTITIONS
 const char *part_probes[] = { "cmdlinepart", NULL };
 #endif
 
-
 /*
  * Main initialization routine
  */
-int __init
-sharpsl_nand_init(void)
+static int __init sharpsl_nand_init(void)
 {
 	struct nand_chip *this;
-	struct mtd_partition* sharpsl_partition_info;
+	struct mtd_partition *sharpsl_partition_info;
 	int err = 0;
 
 	/* Allocate memory for MTD device structure and private data */
-	sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
-				GFP_KERNEL);
+	sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!sharpsl_mtd) {
-		printk ("Unable to allocate SharpSL NAND MTD device structure.\n");
+		printk("Unable to allocate SharpSL NAND MTD device structure.\n");
 		return -ENOMEM;
 	}
 
 	/* map physical adress */
 	sharpsl_io_base = ioremap(sharpsl_phys_base, 0x1000);
-	if(!sharpsl_io_base){
+	if (!sharpsl_io_base) {
 		printk("ioremap to access Sharp SL NAND chip failed\n");
 		kfree(sharpsl_mtd);
 		return -EIO;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&sharpsl_mtd[1]);
+	this = (struct nand_chip *)(&sharpsl_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) sharpsl_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(sharpsl_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	sharpsl_mtd->priv = this;
+	sharpsl_mtd->owner = THIS_MODULE;
 
 	/*
 	 * PXA initialize
@@ -205,23 +190,25 @@ sharpsl_nand_init(void)
 	this->IO_ADDR_R = FLASHIO;
 	this->IO_ADDR_W = FLASHIO;
 	/* Set address of hardware control function */
-	this->hwcontrol = sharpsl_nand_hwcontrol;
+	this->cmd_ctrl = sharpsl_nand_hwcontrol;
 	this->dev_ready = sharpsl_nand_dev_ready;
 	/* 15 us command delay time */
 	this->chip_delay = 15;
 	/* set eccmode using hardware ECC */
-	this->eccmode = NAND_ECC_HW3_256;
+	this->ecc.mode = NAND_ECC_HW;
+	this->ecc.size = 256;
+	this->ecc.bytes = 3;
 	this->badblock_pattern = &sharpsl_bbt;
 	if (machine_is_akita() || machine_is_borzoi()) {
 		this->badblock_pattern = &sharpsl_akita_bbt;
-		this->autooob = &akita_oobinfo;
+		this->ecc.layout = &akita_oobinfo;
 	}
-	this->enable_hwecc = sharpsl_nand_enable_hwecc;
-	this->calculate_ecc = sharpsl_nand_calculate_ecc;
-	this->correct_data = nand_correct_data;
+	this->ecc.hwctl = sharpsl_nand_enable_hwecc;
+	this->ecc.calculate = sharpsl_nand_calculate_ecc;
+	this->ecc.correct = nand_correct_data;
 
 	/* Scan to find existence of the device */
-	err=nand_scan(sharpsl_mtd,1);
+	err = nand_scan(sharpsl_mtd, 1);
 	if (err) {
 		iounmap(sharpsl_io_base);
 		kfree(sharpsl_mtd);
@@ -230,24 +217,23 @@ sharpsl_nand_init(void)
 
 	/* Register the partitions */
 	sharpsl_mtd->name = "sharpsl-nand";
-	nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes,
-						&sharpsl_partition_info, 0);
+	nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, &sharpsl_partition_info, 0);
 
 	if (nr_partitions <= 0) {
 		nr_partitions = DEFAULT_NUM_PARTITIONS;
 		sharpsl_partition_info = sharpsl_nand_default_partition_info;
 		if (machine_is_poodle()) {
-			sharpsl_partition_info[1].size=30 * 1024 * 1024;
+			sharpsl_partition_info[1].size = 22 * 1024 * 1024;
 		} else if (machine_is_corgi() || machine_is_shepherd()) {
-			sharpsl_partition_info[1].size=25 * 1024 * 1024;
+			sharpsl_partition_info[1].size = 25 * 1024 * 1024;
 		} else if (machine_is_husky()) {
-			sharpsl_partition_info[1].size=53 * 1024 * 1024;
+			sharpsl_partition_info[1].size = 53 * 1024 * 1024;
 		} else if (machine_is_spitz()) {
-			sharpsl_partition_info[1].size=5 * 1024 * 1024;
+			sharpsl_partition_info[1].size = 5 * 1024 * 1024;
 		} else if (machine_is_akita()) {
-			sharpsl_partition_info[1].size=58 * 1024 * 1024;
+			sharpsl_partition_info[1].size = 58 * 1024 * 1024;
 		} else if (machine_is_borzoi()) {
-			sharpsl_partition_info[1].size=32 * 1024 * 1024;
+			sharpsl_partition_info[1].size = 32 * 1024 * 1024;
 		}
 	}
 
@@ -261,15 +247,15 @@ sharpsl_nand_init(void)
 	/* Return happy */
 	return 0;
 }
+
 module_init(sharpsl_nand_init);
 
 /*
  * Clean up routine
  */
-#ifdef MODULE
 static void __exit sharpsl_nand_cleanup(void)
 {
-	struct nand_chip *this = (struct nand_chip *) &sharpsl_mtd[1];
+	struct nand_chip *this = (struct nand_chip *)&sharpsl_mtd[1];
 
 	/* Release resources, unregister device */
 	nand_release(sharpsl_mtd);
@@ -279,8 +265,8 @@ static void __exit sharpsl_nand_cleanup(void)
 	/* Free the MTD device structure */
 	kfree(sharpsl_mtd);
 }
+
 module_exit(sharpsl_nand_cleanup);
-#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");

drivers/mtd/nand/spia.c

@@ -39,16 +39,16 @@ static struct mtd_info *spia_mtd = NULL;
  */
 #define SPIA_IO_BASE	0xd0000000	/* Start of EP7212 IO address space */
 #define SPIA_FIO_BASE	0xf0000000	/* Address where flash is mapped */
-#define SPIA_PEDR	0x0080		/*
-					 * IO offset to Port E data register
-					 * where the CLE, ALE and NCE pins
-					 * are wired to.
-					 */
-#define SPIA_PEDDR	0x00c0		/*
-					 * IO offset to Port E data direction
-					 * register so we can control the IO
-					 * lines.
-					 */
+#define SPIA_PEDR	0x0080	/*
+				 * IO offset to Port E data register
+				 * where the CLE, ALE and NCE pins
+				 * are wired to.
+				 */
+#define SPIA_PEDDR	0x00c0	/*
+				 * IO offset to Port E data direction
+				 * register so we can control the IO
+				 * lines.
+				 */
 
 /*
  * Module stuff
@@ -69,79 +69,84 @@ module_param(spia_peddr, int, 0);
  */
 static const struct mtd_partition partition_info[] = {
 	{
-		.name	= "SPIA flash partition 1",
-		.offset	= 0,
-		.size	= 2*1024*1024
-	},
+	 .name = "SPIA flash partition 1",
+	 .offset = 0,
+	 .size = 2 * 1024 * 1024},
 	{
-		.name	= "SPIA flash partition 2",
-		.offset	= 2*1024*1024,
-		.size	= 6*1024*1024
-	}
+	 .name = "SPIA flash partition 2",
+	 .offset = 2 * 1024 * 1024,
+	 .size = 6 * 1024 * 1024}
 };
-#define NUM_PARTITIONS 2
 
+#define NUM_PARTITIONS 2
 
 /*
  *	hardware specific access to control-lines
-*/
-static void spia_hwcontrol(struct mtd_info *mtd, int cmd){
-
-    switch(cmd){
+ *
+ *	ctrl:
+ *	NAND_CNE: bit 0 -> bit 2
+ *	NAND_CLE: bit 1 -> bit 0
+ *	NAND_ALE: bit 2 -> bit 1
+ */
+static void spia_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+	struct nand_chip *chip = mtd->priv;
 
-	case NAND_CTL_SETCLE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |=  0x01; break;
-	case NAND_CTL_CLRCLE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x01; break;
+	if (ctrl & NAND_CTRL_CHANGE) {
+		void __iomem *addr = spia_io_base + spia_pedr;
+		unsigned char bits;
 
-	case NAND_CTL_SETALE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |=  0x02; break;
-	case NAND_CTL_CLRALE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x02; break;
+		bits = (ctrl & NAND_CNE) << 2;
+		bits |= (ctrl & NAND_CLE | NAND_ALE) >> 1;
+		writeb((readb(addr) & ~0x7) | bits, addr);
+	}
 
-	case NAND_CTL_SETNCE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x04; break;
-	case NAND_CTL_CLRNCE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |=  0x04; break;
-    }
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
 /*
  * Main initialization routine
  */
-int __init spia_init (void)
+static int __init spia_init(void)
 {
 	struct nand_chip *this;
 
 	/* Allocate memory for MTD device structure and private data */
-	spia_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip),
-				GFP_KERNEL);
+	spia_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!spia_mtd) {
-		printk ("Unable to allocate SPIA NAND MTD device structure.\n");
+		printk("Unable to allocate SPIA NAND MTD device structure.\n");
 		return -ENOMEM;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&spia_mtd[1]);
+	this = (struct nand_chip *)(&spia_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) spia_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(spia_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	spia_mtd->priv = this;
+	spia_mtd->owner = THIS_MODULE;
 
 	/*
 	 * Set GPIO Port E control register so that the pins are configured
 	 * to be outputs for controlling the NAND flash.
 	 */
-	(*(volatile unsigned char *) (spia_io_base + spia_peddr)) = 0x07;
+	(*(volatile unsigned char *)(spia_io_base + spia_peddr)) = 0x07;
 
 	/* Set address of NAND IO lines */
-	this->IO_ADDR_R = (void __iomem *) spia_fio_base;
-	this->IO_ADDR_W = (void __iomem *) spia_fio_base;
+	this->IO_ADDR_R = (void __iomem *)spia_fio_base;
+	this->IO_ADDR_W = (void __iomem *)spia_fio_base;
 	/* Set address of hardware control function */
-	this->hwcontrol = spia_hwcontrol;
+	this->cmd_ctrl = spia_hwcontrol;
 	/* 15 us command delay time */
 	this->chip_delay = 15;
 
 	/* Scan to find existence of the device */
-	if (nand_scan (spia_mtd, 1)) {
-		kfree (spia_mtd);
+	if (nand_scan(spia_mtd, 1)) {
+		kfree(spia_mtd);
 		return -ENXIO;
 	}
 
@@ -151,22 +156,22 @@ int __init spia_init (void)
 	/* Return happy */
 	return 0;
 }
+
 module_init(spia_init);
 
 /*
  * Clean up routine
  */
-#ifdef MODULE
-static void __exit spia_cleanup (void)
+static void __exit spia_cleanup(void)
 {
 	/* Release resources, unregister device */
-	nand_release (spia_mtd);
+	nand_release(spia_mtd);
 
 	/* Free the MTD device structure */
-	kfree (spia_mtd);
+	kfree(spia_mtd);
 }
+
 module_exit(spia_cleanup);
-#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com");

drivers/mtd/nand/toto.c

@@ -32,6 +32,8 @@
 #include <asm/arch-omap1510/hardware.h>
 #include <asm/arch/gpio.h>
 
+#define CONFIG_NAND_WORKAROUND 1
+
 /*
  * MTD structure for TOTO board
  */
@@ -39,25 +41,6 @@ static struct mtd_info *toto_mtd = NULL;
 
 static unsigned long toto_io_base = OMAP_FLASH_1_BASE;
 
-#define CONFIG_NAND_WORKAROUND 1
-
-#define NAND_NCE 0x4000
-#define NAND_CLE 0x1000
-#define NAND_ALE 0x0002
-#define NAND_MASK (NAND_CLE | NAND_ALE | NAND_NCE)
-
-#define T_NAND_CTL_CLRALE(iob)  gpiosetout(NAND_ALE, 0)
-#define T_NAND_CTL_SETALE(iob)  gpiosetout(NAND_ALE, NAND_ALE)
-#ifdef CONFIG_NAND_WORKAROUND     /* "some" dev boards busted, blue wired to rts2 :( */
-#define T_NAND_CTL_CLRCLE(iob)  gpiosetout(NAND_CLE, 0); rts2setout(2, 2)
-#define T_NAND_CTL_SETCLE(iob)  gpiosetout(NAND_CLE, NAND_CLE); rts2setout(2, 0)
-#else
-#define T_NAND_CTL_CLRCLE(iob)  gpiosetout(NAND_CLE, 0)
-#define T_NAND_CTL_SETCLE(iob)  gpiosetout(NAND_CLE, NAND_CLE)
-#endif
-#define T_NAND_CTL_SETNCE(iob)  gpiosetout(NAND_NCE, 0)
-#define T_NAND_CTL_CLRNCE(iob)  gpiosetout(NAND_NCE, NAND_NCE)
-
 /*
  * Define partitions for flash devices
  */
@@ -91,91 +74,110 @@ static struct mtd_partition partition_info32M[] = {
 
 #define NUM_PARTITIONS32M 3
 #define NUM_PARTITIONS64M 4
+
 /*
  *	hardware specific access to control-lines
-*/
-
-static void toto_hwcontrol(struct mtd_info *mtd, int cmd)
+ *
+ *	ctrl:
+ *	NAND_NCE: bit 0 -> bit 14 (0x4000)
+ *	NAND_CLE: bit 1 -> bit 12 (0x1000)
+ *	NAND_ALE: bit 2 -> bit 1  (0x0002)
+ */
+static void toto_hwcontrol(struct mtd_info *mtd, int cmd,
+			   unsigned int ctrl)
 {
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned long bits;
 
-	udelay(1); /* hopefully enough time for tc make proceding write to clear */
-	switch(cmd){
+		/* hopefully enough time for tc make proceding write to clear */
+		udelay(1);
 
-		case NAND_CTL_SETCLE: T_NAND_CTL_SETCLE(cmd); break;
-		case NAND_CTL_CLRCLE: T_NAND_CTL_CLRCLE(cmd); break;
+		bits = (~ctrl & NAND_NCE) << 14;
+		bits |= (ctrl & NAND_CLE) << 12;
+		bits |= (ctrl & NAND_ALE) >> 1;
 
-		case NAND_CTL_SETALE: T_NAND_CTL_SETALE(cmd); break;
-		case NAND_CTL_CLRALE: T_NAND_CTL_CLRALE(cmd); break;
+#warning Wild guess as gpiosetout() is nowhere defined in the kernel source - tglx
+		gpiosetout(0x5002, bits);
 
-		case NAND_CTL_SETNCE: T_NAND_CTL_SETNCE(cmd); break;
-		case NAND_CTL_CLRNCE: T_NAND_CTL_CLRNCE(cmd); break;
+#ifdef CONFIG_NAND_WORKAROUND
+		/* "some" dev boards busted, blue wired to rts2 :( */
+		rts2setout(2, (ctrl & NAND_CLE) << 1);
+#endif
+		/* allow time to ensure gpio state to over take memory write */
+		udelay(1);
 	}
-	udelay(1); /* allow time to ensure gpio state to over take memory write */
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
 }
 
 /*
  * Main initialization routine
  */
-int __init toto_init (void)
+static int __init toto_init(void)
 {
 	struct nand_chip *this;
 	int err = 0;
 
 	/* Allocate memory for MTD device structure and private data */
-	toto_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip),
-				GFP_KERNEL);
+	toto_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
 	if (!toto_mtd) {
-		printk (KERN_WARNING "Unable to allocate toto NAND MTD device structure.\n");
+		printk(KERN_WARNING "Unable to allocate toto NAND MTD device structure.\n");
 		err = -ENOMEM;
 		goto out;
 	}
 
 	/* Get pointer to private data */
-	this = (struct nand_chip *) (&toto_mtd[1]);
+	this = (struct nand_chip *)(&toto_mtd[1]);
 
 	/* Initialize structures */
-	memset((char *) toto_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
+	memset(toto_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
 
 	/* Link the private data with the MTD structure */
 	toto_mtd->priv = this;
+	toto_mtd->owner = THIS_MODULE;
 
 	/* Set address of NAND IO lines */
 	this->IO_ADDR_R = toto_io_base;
 	this->IO_ADDR_W = toto_io_base;
-	this->hwcontrol = toto_hwcontrol;
+	this->cmd_ctrl = toto_hwcontrol;
 	this->dev_ready = NULL;
 	/* 25 us command delay time */
 	this->chip_delay = 30;
-	this->eccmode = NAND_ECC_SOFT;
+	this->ecc.mode = NAND_ECC_SOFT;
 
-        /* Scan to find existance of the device */
-	if (nand_scan (toto_mtd, 1)) {
+	/* Scan to find existance of the device */
+	if (nand_scan(toto_mtd, 1)) {
 		err = -ENXIO;
 		goto out_mtd;
 	}
 
 	/* Register the partitions */
-	switch(toto_mtd->size){
-		case SZ_64M: add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M); break;
-		case SZ_32M: add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M); break;
-		default: {
-			printk (KERN_WARNING "Unsupported Nand device\n");
+	switch (toto_mtd->size) {
+	case SZ_64M:
+		add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M);
+		break;
+	case SZ_32M:
+		add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M);
+		break;
+	default:{
+			printk(KERN_WARNING "Unsupported Nand device\n");
 			err = -ENXIO;
 			goto out_buf;
 		}
 	}
 
-    	gpioreserve(NAND_MASK);  /* claim our gpios */
-    	archflashwp(0,0);	 /* open up flash for writing */
+	gpioreserve(NAND_MASK);	/* claim our gpios */
+	archflashwp(0, 0);	/* open up flash for writing */
 
 	goto out;
 
-out_buf:
-	kfree (this->data_buf);
-out_mtd:
-	kfree (toto_mtd);
-out:
+ out_mtd:
+	kfree(toto_mtd);
+ out:
 	return err;
 }
 
@@ -184,20 +186,21 @@ module_init(toto_init);
 /*
  * Clean up routine
  */
-static void __exit toto_cleanup (void)
+static void __exit toto_cleanup(void)
 {
 	/* Release resources, unregister device */
-	nand_release (toto_mtd);
+	nand_release(toto_mtd);
 
 	/* Free the MTD device structure */
-	kfree (toto_mtd);
+	kfree(toto_mtd);
 
 	/* stop flash writes */
-	 archflashwp(0,1);
+	archflashwp(0, 1);
 
 	/* release gpios to system */
-	 gpiorelease(NAND_MASK);
+	gpiorelease(NAND_MASK);
 }
+
 module_exit(toto_cleanup);
 
 MODULE_LICENSE("GPL");

drivers/mtd/nand/ts7250.c

@@ -0,0 +1,206 @@
+/*
+ * drivers/mtd/nand/ts7250.c
+ *
+ * Copyright (C) 2004 Technologic Systems (support@embeddedARM.com)
+ *
+ * Derived from drivers/mtd/nand/edb7312.c
+ *   Copyright (C) 2004 Marius Gröger (mag@sysgo.de)
+ *
+ * Derived from drivers/mtd/nand/autcpu12.c
+ *   Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
+ *
+ * $Id: ts7250.c,v 1.4 2004/12/30 22:02:07 joff Exp $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Overview:
+ *   This is a device driver for the NAND flash device found on the
+ *   TS-7250 board which utilizes a Samsung 32 Mbyte part.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/sizes.h>
+#include <asm/mach-types.h>
+
+/*
+ * MTD structure for TS7250 board
+ */
+static struct mtd_info *ts7250_mtd = NULL;
+
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *part_probes[] = { "cmdlinepart", NULL };
+
+#define NUM_PARTITIONS 3
+
+/*
+ * Define static partitions for flash device
+ */
+static struct mtd_partition partition_info32[] = {
+	{
+		.name		= "TS-BOOTROM",
+		.offset		= 0x00000000,
+		.size		= 0x00004000,
+	}, {
+		.name		= "Linux",
+		.offset		= 0x00004000,
+		.size		= 0x01d00000,
+	}, {
+		.name		= "RedBoot",
+		.offset		= 0x01d04000,
+		.size		= 0x002fc000,
+	},
+};
+
+/*
+ * Define static partitions for flash device
+ */
+static struct mtd_partition partition_info128[] = {
+	{
+		.name		= "TS-BOOTROM",
+		.offset		= 0x00000000,
+		.size		= 0x00004000,
+	}, {
+		.name		= "Linux",
+		.offset		= 0x00004000,
+		.size		= 0x07d00000,
+	}, {
+		.name		= "RedBoot",
+		.offset		= 0x07d04000,
+		.size		= 0x002fc000,
+	},
+};
+#endif
+
+
+/*
+ *	hardware specific access to control-lines
+ *
+ *	ctrl:
+ *	NAND_NCE: bit 0 -> bit 2
+ *	NAND_CLE: bit 1 -> bit 1
+ *	NAND_ALE: bit 2 -> bit 0
+ */
+static void ts7250_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned long addr = TS72XX_NAND_CONTROL_VIRT_BASE;
+		unsigned char bits;
+
+		bits = (ctrl & NAND_CNE) << 2;
+		bits |= ctrl & NAND_CLE;
+		bits |= (ctrl & NAND_ALE) >> 2;
+
+		__raw_writeb((__raw_readb(addr) & ~0x7) | bits, addr);
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
+}
+
+/*
+ *	read device ready pin
+ */
+static int ts7250_device_ready(struct mtd_info *mtd)
+{
+	return __raw_readb(TS72XX_NAND_BUSY_VIRT_BASE) & 0x20;
+}
+
+/*
+ * Main initialization routine
+ */
+static int __init ts7250_init(void)
+{
+	struct nand_chip *this;
+	const char *part_type = 0;
+	int mtd_parts_nb = 0;
+	struct mtd_partition *mtd_parts = 0;
+
+	if (!machine_is_ts72xx() || board_is_ts7200())
+		return -ENXIO;
+
+	/* Allocate memory for MTD device structure and private data */
+	ts7250_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
+	if (!ts7250_mtd) {
+		printk("Unable to allocate TS7250 NAND MTD device structure.\n");
+		return -ENOMEM;
+	}
+
+	/* Get pointer to private data */
+	this = (struct nand_chip *)(&ts7250_mtd[1]);
+
+	/* Initialize structures */
+	memset(ts7250_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
+
+	/* Link the private data with the MTD structure */
+	ts7250_mtd->priv = this;
+	ts7250_mtd->owner = THIS_MODULE;
+
+	/* insert callbacks */
+	this->IO_ADDR_R = (void *)TS72XX_NAND_DATA_VIRT_BASE;
+	this->IO_ADDR_W = (void *)TS72XX_NAND_DATA_VIRT_BASE;
+	this->cmd_ctrl = ts7250_hwcontrol;
+	this->dev_ready = ts7250_device_ready;
+	this->chip_delay = 15;
+	this->ecc.mode = NAND_ECC_SOFT;
+
+	printk("Searching for NAND flash...\n");
+	/* Scan to find existence of the device */
+	if (nand_scan(ts7250_mtd, 1)) {
+		kfree(ts7250_mtd);
+		return -ENXIO;
+	}
+#ifdef CONFIG_MTD_PARTITIONS
+	ts7250_mtd->name = "ts7250-nand";
+	mtd_parts_nb = parse_mtd_partitions(ts7250_mtd, part_probes, &mtd_parts, 0);
+	if (mtd_parts_nb > 0)
+		part_type = "command line";
+	else
+		mtd_parts_nb = 0;
+#endif
+	if (mtd_parts_nb == 0) {
+		mtd_parts = partition_info32;
+		if (ts7250_mtd->size >= (128 * 0x100000))
+			mtd_parts = partition_info128;
+		mtd_parts_nb = NUM_PARTITIONS;
+		part_type = "static";
+	}
+
+	/* Register the partitions */
+	printk(KERN_NOTICE "Using %s partition definition\n", part_type);
+	add_mtd_partitions(ts7250_mtd, mtd_parts, mtd_parts_nb);
+
+	/* Return happy */
+	return 0;
+}
+
+module_init(ts7250_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit ts7250_cleanup(void)
+{
+	/* Unregister the device */
+	del_mtd_device(ts7250_mtd);
+
+	/* Free the MTD device structure */
+	kfree(ts7250_mtd);
+}
+
+module_exit(ts7250_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jesse Off <joff@embeddedARM.com>");
+MODULE_DESCRIPTION("MTD map driver for Technologic Systems TS-7250 board");

drivers/mtd/nftlcore.c

@@ -70,8 +70,6 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 	nftl->mbd.devnum = -1;
 	nftl->mbd.blksize = 512;
 	nftl->mbd.tr = tr;
-	memcpy(&nftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
-	nftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
 
         if (NFTL_mount(nftl) < 0) {
 		printk(KERN_WARNING "NFTL: could not mount device\n");
@@ -136,6 +134,69 @@ static void nftl_remove_dev(struct mtd_blktrans_dev *dev)
 	kfree(nftl);
 }
 
+/*
+ * Read oob data from flash
+ */
+int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		  size_t *retlen, uint8_t *buf)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs & (mtd->writesize - 1);
+	ops.ooblen = len;
+	ops.oobbuf = buf;
+	ops.datbuf = NULL;
+	ops.len = len;
+
+	res = mtd->read_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
+ * Write oob data to flash
+ */
+int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		   size_t *retlen, uint8_t *buf)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs & (mtd->writesize - 1);
+	ops.ooblen = len;
+	ops.oobbuf = buf;
+	ops.datbuf = NULL;
+	ops.len = len;
+
+	res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
+ * Write data and oob to flash
+ */
+static int nftl_write(struct mtd_info *mtd, loff_t offs, size_t len,
+		      size_t *retlen, uint8_t *buf, uint8_t *oob)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs;
+	ops.ooblen = mtd->oobsize;
+	ops.oobbuf = oob;
+	ops.datbuf = buf;
+	ops.len = len;
+
+	res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
 #ifdef CONFIG_NFTL_RW
 
 /* Actual NFTL access routines */
@@ -185,6 +246,7 @@ static u16 NFTL_findfreeblock(struct NFTLrecord *nftl, int desperate )
 
 static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned pendingblock )
 {
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	u16 BlockMap[MAX_SECTORS_PER_UNIT];
 	unsigned char BlockLastState[MAX_SECTORS_PER_UNIT];
 	unsigned char BlockFreeFound[MAX_SECTORS_PER_UNIT];
@@ -194,7 +256,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
 	unsigned int targetEUN;
 	struct nftl_oob oob;
 	int inplace = 1;
-        size_t retlen;
+	size_t retlen;
 
 	memset(BlockMap, 0xff, sizeof(BlockMap));
 	memset(BlockFreeFound, 0, sizeof(BlockFreeFound));
@@ -210,21 +272,21 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
 	/* Scan to find the Erase Unit which holds the actual data for each
 	   512-byte block within the Chain.
 	*/
-        silly = MAX_LOOPS;
+	silly = MAX_LOOPS;
 	targetEUN = BLOCK_NIL;
 	while (thisEUN <= nftl->lastEUN ) {
-                unsigned int status, foldmark;
+		unsigned int status, foldmark;
 
 		targetEUN = thisEUN;
 		for (block = 0; block < nftl->EraseSize / 512; block ++) {
-			MTD_READOOB(nftl->mbd.mtd,
-				    (thisEUN * nftl->EraseSize) + (block * 512),
-				    16 , &retlen, (char *)&oob);
+			nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) +
+				      (block * 512), 16 , &retlen,
+				      (char *)&oob);
 			if (block == 2) {
-                                foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1;
-                                if (foldmark == FOLD_MARK_IN_PROGRESS) {
-                                        DEBUG(MTD_DEBUG_LEVEL1,
-                                              "Write Inhibited on EUN %d\n", thisEUN);
+				foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1;
+				if (foldmark == FOLD_MARK_IN_PROGRESS) {
+					DEBUG(MTD_DEBUG_LEVEL1,
+					      "Write Inhibited on EUN %d\n", thisEUN);
 					inplace = 0;
 				} else {
 					/* There's no other reason not to do inplace,
@@ -233,7 +295,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
 					inplace = 1;
 				}
 			}
-                        status = oob.b.Status | oob.b.Status1;
+			status = oob.b.Status | oob.b.Status1;
 			BlockLastState[block] = status;
 
 			switch(status) {
@@ -328,15 +390,15 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
 			return BLOCK_NIL;
 		}
 	} else {
-            /* We put a fold mark in the chain we are folding only if
-               we fold in place to help the mount check code. If we do
-               not fold in place, it is possible to find the valid
-               chain by selecting the longer one */
-            oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS);
-            oob.u.c.unused = 0xffffffff;
-            MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
-                         8, &retlen, (char *)&oob.u);
-        }
+		/* We put a fold mark in the chain we are folding only if we
+               fold in place to help the mount check code. If we do not fold in
+               place, it is possible to find the valid chain by selecting the
+               longer one */
+		oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS);
+		oob.u.c.unused = 0xffffffff;
+		nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
+			       8, &retlen, (char *)&oob.u);
+	}
 
 	/* OK. We now know the location of every block in the Virtual Unit Chain,
 	   and the Erase Unit into which we are supposed to be copying.
@@ -353,33 +415,33 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
 			continue;
 		}
 
-                /* copy only in non free block (free blocks can only
+		/* copy only in non free block (free blocks can only
                    happen in case of media errors or deleted blocks) */
-                if (BlockMap[block] == BLOCK_NIL)
-                        continue;
-
-                ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
-				  512, &retlen, movebuf);
-                if (ret < 0) {
-                    ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block])
-                                      + (block * 512), 512, &retlen,
-                                      movebuf);
-                    if (ret != -EIO)
-                        printk("Error went away on retry.\n");
-                }
+		if (BlockMap[block] == BLOCK_NIL)
+			continue;
+
+		ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
+				512, &retlen, movebuf);
+		if (ret < 0 && ret != -EUCLEAN) {
+			ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block])
+					+ (block * 512), 512, &retlen,
+					movebuf);
+			if (ret != -EIO)
+				printk("Error went away on retry.\n");
+		}
 		memset(&oob, 0xff, sizeof(struct nftl_oob));
 		oob.b.Status = oob.b.Status1 = SECTOR_USED;
-                MTD_WRITEECC(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + (block * 512),
-                             512, &retlen, movebuf, (char *)&oob, &nftl->oobinfo);
+
+		nftl_write(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) +
+			   (block * 512), 512, &retlen, movebuf, (char *)&oob);
 	}
 
-        /* add the header so that it is now a valid chain */
-        oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum
-                = cpu_to_le16(thisVUC);
-        oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = 0xffff;
+	/* add the header so that it is now a valid chain */
+	oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum = cpu_to_le16(thisVUC);
+	oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = 0xffff;
 
-        MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 8,
-                     8, &retlen, (char *)&oob.u);
+	nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 8,
+		       8, &retlen, (char *)&oob.u);
 
 	/* OK. We've moved the whole lot into the new block. Now we have to free the original blocks. */
 
@@ -396,18 +458,18 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
 	while (thisEUN <= nftl->lastEUN && thisEUN != targetEUN) {
 		unsigned int EUNtmp;
 
-                EUNtmp = nftl->ReplUnitTable[thisEUN];
+		EUNtmp = nftl->ReplUnitTable[thisEUN];
 
-                if (NFTL_formatblock(nftl, thisEUN) < 0) {
+		if (NFTL_formatblock(nftl, thisEUN) < 0) {
 			/* could not erase : mark block as reserved
 			 */
 			nftl->ReplUnitTable[thisEUN] = BLOCK_RESERVED;
-                } else {
+		} else {
 			/* correctly erased : mark it as free */
 			nftl->ReplUnitTable[thisEUN] = BLOCK_FREE;
 			nftl->numfreeEUNs++;
-                }
-                thisEUN = EUNtmp;
+		}
+		thisEUN = EUNtmp;
 	}
 
 	/* Make this the new start of chain for thisVUC */
@@ -473,6 +535,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
 {
 	u16 lastEUN;
 	u16 thisVUC = block / (nftl->EraseSize / 512);
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	unsigned int writeEUN;
 	unsigned long blockofs = (block * 512) & (nftl->EraseSize -1);
 	size_t retlen;
@@ -489,21 +552,22 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
 		*/
 		lastEUN = BLOCK_NIL;
 		writeEUN = nftl->EUNtable[thisVUC];
-                silly = MAX_LOOPS;
+		silly = MAX_LOOPS;
 		while (writeEUN <= nftl->lastEUN) {
 			struct nftl_bci bci;
 			size_t retlen;
-                        unsigned int status;
+			unsigned int status;
 
 			lastEUN = writeEUN;
 
-			MTD_READOOB(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
-				    8, &retlen, (char *)&bci);
+			nftl_read_oob(mtd,
+				      (writeEUN * nftl->EraseSize) + blockofs,
+				      8, &retlen, (char *)&bci);
 
 			DEBUG(MTD_DEBUG_LEVEL2, "Status of block %d in EUN %d is %x\n",
 			      block , writeEUN, le16_to_cpu(bci.Status));
 
-                        status = bci.Status | bci.Status1;
+			status = bci.Status | bci.Status1;
 			switch(status) {
 			case SECTOR_FREE:
 				return writeEUN;
@@ -574,10 +638,10 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
 		/* We've found a free block. Insert it into the chain. */
 
 		if (lastEUN != BLOCK_NIL) {
-                    thisVUC |= 0x8000; /* It's a replacement block */
+			thisVUC |= 0x8000; /* It's a replacement block */
 		} else {
-                    /* The first block in a new chain */
-                    nftl->EUNtable[thisVUC] = writeEUN;
+			/* The first block in a new chain */
+			nftl->EUNtable[thisVUC] = writeEUN;
 		}
 
 		/* set up the actual EUN we're writing into */
@@ -585,29 +649,29 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
 		nftl->ReplUnitTable[writeEUN] = BLOCK_NIL;
 
 		/* ... and on the flash itself */
-		MTD_READOOB(nftl->mbd.mtd, writeEUN * nftl->EraseSize + 8, 8,
-			    &retlen, (char *)&oob.u);
+		nftl_read_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
+			      &retlen, (char *)&oob.u);
 
 		oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum = cpu_to_le16(thisVUC);
 
-		MTD_WRITEOOB(nftl->mbd.mtd, writeEUN * nftl->EraseSize + 8, 8,
-                             &retlen, (char *)&oob.u);
+		nftl_write_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
+			       &retlen, (char *)&oob.u);
 
-                /* we link the new block to the chain only after the
+		/* we link the new block to the chain only after the
                    block is ready. It avoids the case where the chain
                    could point to a free block */
-                if (lastEUN != BLOCK_NIL) {
+		if (lastEUN != BLOCK_NIL) {
 			/* Both in our cache... */
 			nftl->ReplUnitTable[lastEUN] = writeEUN;
 			/* ... and on the flash itself */
-			MTD_READOOB(nftl->mbd.mtd, (lastEUN * nftl->EraseSize) + 8,
-				    8, &retlen, (char *)&oob.u);
+			nftl_read_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
+				      8, &retlen, (char *)&oob.u);
 
 			oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum
 				= cpu_to_le16(writeEUN);
 
-			MTD_WRITEOOB(nftl->mbd.mtd, (lastEUN * nftl->EraseSize) + 8,
-				     8, &retlen, (char *)&oob.u);
+			nftl_write_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
+				       8, &retlen, (char *)&oob.u);
 		}
 
 		return writeEUN;
@@ -639,10 +703,9 @@ static int nftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 
 	memset(&oob, 0xff, sizeof(struct nftl_oob));
 	oob.b.Status = oob.b.Status1 = SECTOR_USED;
-	MTD_WRITEECC(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
-		     512, &retlen, (char *)buffer, (char *)&oob, &nftl->oobinfo);
-        /* need to write SECTOR_USED flags since they are not written in mtd_writeecc */
 
+	nftl_write(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
+		   512, &retlen, (char *)buffer, (char *)&oob);
 	return 0;
 }
 #endif /* CONFIG_NFTL_RW */
@@ -651,20 +714,22 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 			  char *buffer)
 {
 	struct NFTLrecord *nftl = (void *)mbd;
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	u16 lastgoodEUN;
 	u16 thisEUN = nftl->EUNtable[block / (nftl->EraseSize / 512)];
 	unsigned long blockofs = (block * 512) & (nftl->EraseSize - 1);
-        unsigned int status;
+	unsigned int status;
 	int silly = MAX_LOOPS;
-        size_t retlen;
-        struct nftl_bci bci;
+	size_t retlen;
+	struct nftl_bci bci;
 
 	lastgoodEUN = BLOCK_NIL;
 
-        if (thisEUN != BLOCK_NIL) {
+	if (thisEUN != BLOCK_NIL) {
 		while (thisEUN < nftl->nb_blocks) {
-			if (MTD_READOOB(nftl->mbd.mtd, (thisEUN * nftl->EraseSize) + blockofs,
-					8, &retlen, (char *)&bci) < 0)
+			if (nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) +
+					  blockofs, 8, &retlen,
+					  (char *)&bci) < 0)
 				status = SECTOR_IGNORE;
 			else
 				status = bci.Status | bci.Status1;
@@ -694,7 +759,7 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 			}
 			thisEUN = nftl->ReplUnitTable[thisEUN];
 		}
-        }
+	}
 
  the_end:
 	if (lastgoodEUN == BLOCK_NIL) {
@@ -703,7 +768,9 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 	} else {
 		loff_t ptr = (lastgoodEUN * nftl->EraseSize) + blockofs;
 		size_t retlen;
-		if (MTD_READ(nftl->mbd.mtd, ptr, 512, &retlen, buffer))
+		int res = mtd->read(mtd, ptr, 512, &retlen, buffer);
+
+		if (res < 0 && res != -EUCLEAN)
 			return -EIO;
 	}
 	return 0;

drivers/mtd/nftlmount.c

@@ -33,6 +33,11 @@
 
 char nftlmountrev[]="$Revision: 1.41 $";
 
+extern int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+			 size_t *retlen, uint8_t *buf);
+extern int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+			  size_t *retlen, uint8_t *buf);
+
 /* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the
  *	various device information of the NFTL partition and Bad Unit Table. Update
  *	the ReplUnitTable[] table accroding to the Bad Unit Table. ReplUnitTable[]
@@ -45,6 +50,7 @@ static int find_boot_record(struct NFTLrecord *nftl)
 	size_t retlen;
 	u8 buf[SECTORSIZE];
 	struct NFTLMediaHeader *mh = &nftl->MediaHdr;
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	unsigned int i;
 
         /* Assume logical EraseSize == physical erasesize for starting the scan.
@@ -65,7 +71,8 @@ static int find_boot_record(struct NFTLrecord *nftl)
 
 		/* Check for ANAND header first. Then can whinge if it's found but later
 		   checks fail */
-		ret = MTD_READ(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE, &retlen, buf);
+		ret = mtd->read(mtd, block * nftl->EraseSize, SECTORSIZE,
+				&retlen, buf);
 		/* We ignore ret in case the ECC of the MediaHeader is invalid
 		   (which is apparently acceptable) */
 		if (retlen != SECTORSIZE) {
@@ -90,8 +97,9 @@ static int find_boot_record(struct NFTLrecord *nftl)
 		}
 
 		/* To be safer with BIOS, also use erase mark as discriminant */
-		if ((ret = MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8,
-				8, &retlen, (char *)&h1) < 0)) {
+		if ((ret = nftl_read_oob(mtd, block * nftl->EraseSize +
+					 SECTORSIZE + 8, 8, &retlen,
+					 (char *)&h1) < 0)) {
 			printk(KERN_WARNING "ANAND header found at 0x%x in mtd%d, but OOB data read failed (err %d)\n",
 			       block * nftl->EraseSize, nftl->mbd.mtd->index, ret);
 			continue;
@@ -109,8 +117,8 @@ static int find_boot_record(struct NFTLrecord *nftl)
 		}
 
 		/* Finally reread to check ECC */
-		if ((ret = MTD_READECC(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE,
-				&retlen, buf, (char *)&oob, NULL) < 0)) {
+		if ((ret = mtd->read(mtd, block * nftl->EraseSize, SECTORSIZE,
+				     &retlen, buf) < 0)) {
 			printk(KERN_NOTICE "ANAND header found at 0x%x in mtd%d, but ECC read failed (err %d)\n",
 			       block * nftl->EraseSize, nftl->mbd.mtd->index, ret);
 			continue;
@@ -228,9 +236,9 @@ device is already correct.
 The new DiskOnChip driver already scanned the bad block table.  Just query it.
 			if ((i & (SECTORSIZE - 1)) == 0) {
 				/* read one sector for every SECTORSIZE of blocks */
-				if ((ret = MTD_READECC(nftl->mbd.mtd, block * nftl->EraseSize +
-						       i + SECTORSIZE, SECTORSIZE, &retlen, buf,
-						       (char *)&oob, NULL)) < 0) {
+				if ((ret = mtd->read(nftl->mbd.mtd, block * nftl->EraseSize +
+						     i + SECTORSIZE, SECTORSIZE, &retlen,
+						     buf)) < 0) {
 					printk(KERN_NOTICE "Read of bad sector table failed (err %d)\n",
 					       ret);
 					kfree(nftl->ReplUnitTable);
@@ -268,18 +276,22 @@ static int memcmpb(void *a, int c, int n)
 static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int len,
 			      int check_oob)
 {
-	int i;
-	size_t retlen;
 	u8 buf[SECTORSIZE + nftl->mbd.mtd->oobsize];
+	struct mtd_info *mtd = nftl->mbd.mtd;
+	size_t retlen;
+	int i;
 
 	for (i = 0; i < len; i += SECTORSIZE) {
-		if (MTD_READECC(nftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &nftl->oobinfo) < 0)
+		if (mtd->read(mtd, address, SECTORSIZE, &retlen, buf))
 			return -1;
 		if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
 			return -1;
 
 		if (check_oob) {
-			if (memcmpb(buf + SECTORSIZE, 0xff, nftl->mbd.mtd->oobsize) != 0)
+			if(nftl_read_oob(mtd, address, mtd->oobsize,
+					 &retlen, &buf[SECTORSIZE]) < 0)
+				return -1;
+			if (memcmpb(buf + SECTORSIZE, 0xff, mtd->oobsize) != 0)
 				return -1;
 		}
 		address += SECTORSIZE;
@@ -301,10 +313,11 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block)
 	unsigned int nb_erases, erase_mark;
 	struct nftl_uci1 uci;
 	struct erase_info *instr = &nftl->instr;
+	struct mtd_info *mtd = nftl->mbd.mtd;
 
 	/* Read the Unit Control Information #1 for Wear-Leveling */
-	if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8,
-			8, &retlen, (char *)&uci) < 0)
+	if (nftl_read_oob(mtd, block * nftl->EraseSize + SECTORSIZE + 8,
+			  8, &retlen, (char *)&uci) < 0)
 		goto default_uci1;
 
 	erase_mark = le16_to_cpu ((uci.EraseMark | uci.EraseMark1));
@@ -321,7 +334,7 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block)
 	instr->mtd = nftl->mbd.mtd;
 	instr->addr = block * nftl->EraseSize;
 	instr->len = nftl->EraseSize;
-	MTD_ERASE(nftl->mbd.mtd, instr);
+	mtd->erase(mtd, instr);
 
 	if (instr->state == MTD_ERASE_FAILED) {
 		printk("Error while formatting block %d\n", block);
@@ -343,8 +356,8 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block)
 			goto fail;
 
 		uci.WearInfo = le32_to_cpu(nb_erases);
-		if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
-				 &retlen, (char *)&uci) < 0)
+		if (nftl_write_oob(mtd, block * nftl->EraseSize + SECTORSIZE +
+				   8, 8, &retlen, (char *)&uci) < 0)
 			goto fail;
 		return 0;
 fail:
@@ -365,6 +378,7 @@ fail:
  *	case. */
 static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_block)
 {
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	unsigned int block, i, status;
 	struct nftl_bci bci;
 	int sectors_per_block;
@@ -374,8 +388,9 @@ static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_b
 	block = first_block;
 	for (;;) {
 		for (i = 0; i < sectors_per_block; i++) {
-			if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + i * SECTORSIZE,
-					8, &retlen, (char *)&bci) < 0)
+			if (nftl_read_oob(mtd,
+					  block * nftl->EraseSize + i * SECTORSIZE,
+					  8, &retlen, (char *)&bci) < 0)
 				status = SECTOR_IGNORE;
 			else
 				status = bci.Status | bci.Status1;
@@ -394,9 +409,10 @@ static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_b
 					/* sector not free actually : mark it as SECTOR_IGNORE  */
 					bci.Status = SECTOR_IGNORE;
 					bci.Status1 = SECTOR_IGNORE;
-					MTD_WRITEOOB(nftl->mbd.mtd,
-						     block * nftl->EraseSize + i * SECTORSIZE,
-						     8, &retlen, (char *)&bci);
+					nftl_write_oob(mtd, block *
+						       nftl->EraseSize +
+						       i * SECTORSIZE, 8,
+						       &retlen, (char *)&bci);
 				}
 				break;
 			default:
@@ -481,13 +497,14 @@ static void format_chain(struct NFTLrecord *nftl, unsigned int first_block)
  *	1. */
 static int check_and_mark_free_block(struct NFTLrecord *nftl, int block)
 {
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	struct nftl_uci1 h1;
 	unsigned int erase_mark;
 	size_t retlen;
 
 	/* check erase mark. */
-	if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
-			&retlen, (char *)&h1) < 0)
+	if (nftl_read_oob(mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
+			  &retlen, (char *)&h1) < 0)
 		return -1;
 
 	erase_mark = le16_to_cpu ((h1.EraseMark | h1.EraseMark1));
@@ -501,8 +518,9 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block)
 		h1.EraseMark = cpu_to_le16(ERASE_MARK);
 		h1.EraseMark1 = cpu_to_le16(ERASE_MARK);
 		h1.WearInfo = cpu_to_le32(0);
-		if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
-				 &retlen, (char *)&h1) < 0)
+		if (nftl_write_oob(mtd,
+				   block * nftl->EraseSize + SECTORSIZE + 8, 8,
+				   &retlen, (char *)&h1) < 0)
 			return -1;
 	} else {
 #if 0
@@ -513,8 +531,8 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block)
 						SECTORSIZE, 0) != 0)
 				return -1;
 
-			if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + i,
-					16, &retlen, buf) < 0)
+			if (nftl_read_oob(mtd, block * nftl->EraseSize + i,
+					  16, &retlen, buf) < 0)
 				return -1;
 			if (i == SECTORSIZE) {
 				/* skip erase mark */
@@ -540,11 +558,12 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block)
  */
 static int get_fold_mark(struct NFTLrecord *nftl, unsigned int block)
 {
+	struct mtd_info *mtd = nftl->mbd.mtd;
 	struct nftl_uci2 uci;
 	size_t retlen;
 
-	if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + 2 * SECTORSIZE + 8,
-			8, &retlen, (char *)&uci) < 0)
+	if (nftl_read_oob(mtd, block * nftl->EraseSize + 2 * SECTORSIZE + 8,
+			  8, &retlen, (char *)&uci) < 0)
 		return 0;
 
 	return le16_to_cpu((uci.FoldMark | uci.FoldMark1));
@@ -558,6 +577,7 @@ int NFTL_mount(struct NFTLrecord *s)
 	int chain_length, do_format_chain;
 	struct nftl_uci0 h0;
 	struct nftl_uci1 h1;
+	struct mtd_info *mtd = s->mbd.mtd;
 	size_t retlen;
 
 	/* search for NFTL MediaHeader and Spare NFTL Media Header */
@@ -582,10 +602,13 @@ int NFTL_mount(struct NFTLrecord *s)
 
 			for (;;) {
 				/* read the block header. If error, we format the chain */
-				if (MTD_READOOB(s->mbd.mtd, block * s->EraseSize + 8, 8,
-						&retlen, (char *)&h0) < 0 ||
-				    MTD_READOOB(s->mbd.mtd, block * s->EraseSize + SECTORSIZE + 8, 8,
-						&retlen, (char *)&h1) < 0) {
+				if (nftl_read_oob(mtd,
+						  block * s->EraseSize + 8, 8,
+						  &retlen, (char *)&h0) < 0 ||
+				    nftl_read_oob(mtd,
+						  block * s->EraseSize +
+						  SECTORSIZE + 8, 8,
+						  &retlen, (char *)&h1) < 0) {
 					s->ReplUnitTable[block] = BLOCK_NIL;
 					do_format_chain = 1;
 					break;

drivers/mtd/onenand/Kconfig

@@ -29,6 +29,20 @@ config MTD_ONENAND_GENERIC
 	help
 	  Support for OneNAND flash via platform device driver.
 
+config MTD_ONENAND_OTP
+	bool "OneNAND OTP Support"
+	depends on MTD_ONENAND
+	help
+	  One Block of the NAND Flash Array memory is reserved as
+	  a One-Time Programmable Block memory area.
+	  Also, 1st Block of NAND Flash Array can be used as OTP.
+
+	  The OTP block can be read, programmed and locked using the same
+	  operations as any other NAND Flash Array memory block.
+	  OTP block cannot be erased.
+
+	  OTP block is fully-guaranteed to be a valid block.
+
 config MTD_ONENAND_SYNC_READ
 	bool "OneNAND Sync. Burst Read Support"
 	depends on ARCH_OMAP

drivers/mtd/onenand/onenand_base.c

@@ -23,8 +23,7 @@
 /**
  * onenand_oob_64 - oob info for large (2KB) page
  */
-static struct nand_oobinfo onenand_oob_64 = {
-	.useecc		= MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout onenand_oob_64 = {
 	.eccbytes	= 20,
 	.eccpos		= {
 		8, 9, 10, 11, 12,
@@ -34,14 +33,14 @@ static struct nand_oobinfo onenand_oob_64 = {
 		},
 	.oobfree	= {
 		{2, 3}, {14, 2}, {18, 3}, {30, 2},
-		{24, 3}, {46, 2}, {40, 3}, {62, 2} }
+		{34, 3}, {46, 2}, {50, 3}, {62, 2}
+	}
 };
 
 /**
  * onenand_oob_32 - oob info for middle (1KB) page
  */
-static struct nand_oobinfo onenand_oob_32 = {
-	.useecc		= MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout onenand_oob_32 = {
 	.eccbytes	= 10,
 	.eccpos		= {
 		8, 9, 10, 11, 12,
@@ -190,7 +189,7 @@ static int onenand_buffer_address(int dataram1, int sectors, int count)
 static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t len)
 {
 	struct onenand_chip *this = mtd->priv;
-	int value, readcmd = 0;
+	int value, readcmd = 0, block_cmd = 0;
 	int block, page;
 	/* Now we use page size operation */
 	int sectors = 4, count = 4;
@@ -206,6 +205,8 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
 
 	case ONENAND_CMD_ERASE:
 	case ONENAND_CMD_BUFFERRAM:
+	case ONENAND_CMD_OTP_ACCESS:
+		block_cmd = 1;
 		block = (int) (addr >> this->erase_shift);
 		page = -1;
 		break;
@@ -233,6 +234,12 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
 		/* Write 'DFS, FBA' of Flash */
 		value = onenand_block_address(this, block);
 		this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);
+
+		if (block_cmd) {
+			/* Select DataRAM for DDP */
+			value = onenand_bufferram_address(this, block);
+			this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
+		}
 	}
 
 	if (page != -1) {
@@ -301,6 +308,7 @@ static int onenand_wait(struct mtd_info *mtd, int state)
 
 		if (state != FL_READING)
 			cond_resched();
+		touch_softlockup_watchdog();
 	}
 	/* To get correct interrupt status in timeout case */
 	interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
@@ -344,7 +352,7 @@ static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area)
 
 	if (ONENAND_CURRENT_BUFFERRAM(this)) {
 		if (area == ONENAND_DATARAM)
-			return mtd->oobblock;
+			return mtd->writesize;
 		if (area == ONENAND_SPARERAM)
 			return mtd->oobsize;
 	}
@@ -372,6 +380,17 @@ static int onenand_read_bufferram(struct mtd_info *mtd, int area,
 
 	bufferram += onenand_bufferram_offset(mtd, area);
 
+	if (ONENAND_CHECK_BYTE_ACCESS(count)) {
+		unsigned short word;
+
+		/* Align with word(16-bit) size */
+		count--;
+
+		/* Read word and save byte */
+		word = this->read_word(bufferram + offset + count);
+		buffer[count] = (word & 0xff);
+	}
+
 	memcpy(buffer, bufferram + offset, count);
 
 	return 0;
@@ -399,6 +418,17 @@ static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area,
 
 	this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ);
 
+	if (ONENAND_CHECK_BYTE_ACCESS(count)) {
+		unsigned short word;
+
+		/* Align with word(16-bit) size */
+		count--;
+
+		/* Read word and save byte */
+		word = this->read_word(bufferram + offset + count);
+		buffer[count] = (word & 0xff);
+	}
+
 	memcpy(buffer, bufferram + offset, count);
 
 	this->mmcontrol(mtd, 0);
@@ -426,6 +456,22 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area,
 
 	bufferram += onenand_bufferram_offset(mtd, area);
 
+	if (ONENAND_CHECK_BYTE_ACCESS(count)) {
+		unsigned short word;
+		int byte_offset;
+
+		/* Align with word(16-bit) size */
+		count--;
+
+		/* Calculate byte access offset */
+		byte_offset = offset + count;
+
+		/* Read word and save byte */
+		word = this->read_word(bufferram + byte_offset);
+		word = (word & ~0xff) | buffer[count];
+		this->write_word(word, bufferram + byte_offset);
+	}
+
 	memcpy(bufferram + offset, buffer, count);
 
 	return 0;
@@ -549,31 +595,28 @@ static void onenand_release_device(struct mtd_info *mtd)
 }
 
 /**
- * onenand_read_ecc - [MTD Interface] Read data with ECC
+ * onenand_read - [MTD Interface] Read data from flash
  * @param mtd		MTD device structure
  * @param from		offset to read from
  * @param len		number of bytes to read
  * @param retlen	pointer to variable to store the number of read bytes
  * @param buf		the databuffer to put data
- * @param oob_buf	filesystem supplied oob data buffer
- * @param oobsel	oob selection structure
  *
- * OneNAND read with ECC
- */
-static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf,
-	u_char *oob_buf, struct nand_oobinfo *oobsel)
+ * Read with ecc
+*/
+static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
+	size_t *retlen, u_char *buf)
 {
 	struct onenand_chip *this = mtd->priv;
 	int read = 0, column;
 	int thislen;
 	int ret = 0;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "onenand_read: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
 
 	/* Do not allow reads past end of device */
 	if ((from + len) > mtd->size) {
-		DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_ecc: Attempt read beyond end of device\n");
+		DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: Attempt read beyond end of device\n");
 		*retlen = 0;
 		return -EINVAL;
 	}
@@ -584,14 +627,14 @@ static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 	/* TODO handling oob */
 
 	while (read < len) {
-		thislen = min_t(int, mtd->oobblock, len - read);
+		thislen = min_t(int, mtd->writesize, len - read);
 
-		column = from & (mtd->oobblock - 1);
-		if (column + thislen > mtd->oobblock)
-			thislen = mtd->oobblock - column;
+		column = from & (mtd->writesize - 1);
+		if (column + thislen > mtd->writesize)
+			thislen = mtd->writesize - column;
 
 		if (!onenand_check_bufferram(mtd, from)) {
-			this->command(mtd, ONENAND_CMD_READ, from, mtd->oobblock);
+			this->command(mtd, ONENAND_CMD_READ, from, mtd->writesize);
 
 			ret = this->wait(mtd, FL_READING);
 			/* First copy data and check return value for ECC handling */
@@ -606,7 +649,7 @@ static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 			break;
 
 		if (ret) {
-			DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_ecc: read failed = %d\n", ret);
+			DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: read failed = %d\n", ret);
 			goto out;
 		}
 
@@ -628,23 +671,7 @@ out:
 }
 
 /**
- * onenand_read - [MTD Interface] MTD compability function for onenand_read_ecc
- * @param mtd		MTD device structure
- * @param from		offset to read from
- * @param len		number of bytes to read
- * @param retlen	pointer to variable to store the number of read bytes
- * @param buf		the databuffer to put data
- *
- * This function simply calls onenand_read_ecc with oob buffer and oobsel = NULL
-*/
-static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf)
-{
-	return onenand_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
-}
-
-/**
- * onenand_read_oob - [MTD Interface] OneNAND read out-of-band
+ * onenand_do_read_oob - [MTD Interface] OneNAND read out-of-band
  * @param mtd		MTD device structure
  * @param from		offset to read from
  * @param len		number of bytes to read
@@ -653,8 +680,8 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
  *
  * OneNAND read out-of-band data from the spare area
  */
-static int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf)
+int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
+			size_t *retlen, u_char *buf)
 {
 	struct onenand_chip *this = mtd->priv;
 	int read = 0, thislen, column;
@@ -704,7 +731,7 @@ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
 		/* Read more? */
 		if (read < len) {
 			/* Page size */
-			from += mtd->oobblock;
+			from += mtd->writesize;
 			column = 0;
 		}
 	}
@@ -717,7 +744,52 @@ out:
 	return ret;
 }
 
+/**
+ * onenand_read_oob - [MTD Interface] NAND write data and/or out-of-band
+ * @mtd:	MTD device structure
+ * @from:	offset to read from
+ * @ops:	oob operation description structure
+ */
+static int onenand_read_oob(struct mtd_info *mtd, loff_t from,
+			    struct mtd_oob_ops *ops)
+{
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
+
+	return onenand_do_read_oob(mtd, from + ops->ooboffs, ops->len,
+				   &ops->retlen, ops->oobbuf);
+}
+
 #ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
+/**
+ * onenand_verify_oob - [GENERIC] verify the oob contents after a write
+ * @param mtd		MTD device structure
+ * @param buf		the databuffer to verify
+ * @param to		offset to read from
+ * @param len		number of bytes to read and compare
+ *
+ */
+static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to, int len)
+{
+	struct onenand_chip *this = mtd->priv;
+	char *readp = this->page_buf;
+	int column = to & (mtd->oobsize - 1);
+	int status, i;
+
+	this->command(mtd, ONENAND_CMD_READOOB, to, mtd->oobsize);
+	onenand_update_bufferram(mtd, to, 0);
+	status = this->wait(mtd, FL_READING);
+	if (status)
+		return status;
+
+	this->read_bufferram(mtd, ONENAND_SPARERAM, readp, column, len);
+
+	for(i = 0; i < len; i++)
+		if (buf[i] != 0xFF && buf[i] != readp[i])
+			return -EBADMSG;
+
+	return 0;
+}
+
 /**
  * onenand_verify_page - [GENERIC] verify the chip contents after a write
  * @param mtd		MTD device structure
@@ -731,7 +803,7 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr)
 	void __iomem *dataram0, *dataram1;
 	int ret = 0;
 
-	this->command(mtd, ONENAND_CMD_READ, addr, mtd->oobblock);
+	this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize);
 
 	ret = this->wait(mtd, FL_READING);
 	if (ret)
@@ -741,53 +813,51 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr)
 
 	/* Check, if the two dataram areas are same */
 	dataram0 = this->base + ONENAND_DATARAM;
-	dataram1 = dataram0 + mtd->oobblock;
+	dataram1 = dataram0 + mtd->writesize;
 
-	if (memcmp(dataram0, dataram1, mtd->oobblock))
+	if (memcmp(dataram0, dataram1, mtd->writesize))
 		return -EBADMSG;
 
 	return 0;
 }
 #else
 #define onenand_verify_page(...)	(0)
+#define onenand_verify_oob(...)		(0)
 #endif
 
-#define NOTALIGNED(x)	((x & (mtd->oobblock - 1)) != 0)
+#define NOTALIGNED(x)	((x & (mtd->writesize - 1)) != 0)
 
 /**
- * onenand_write_ecc - [MTD Interface] OneNAND write with ECC
+ * onenand_write - [MTD Interface] write buffer to FLASH
  * @param mtd		MTD device structure
  * @param to		offset to write to
  * @param len		number of bytes to write
  * @param retlen	pointer to variable to store the number of written bytes
  * @param buf		the data to write
- * @param eccbuf	filesystem supplied oob data buffer
- * @param oobsel	oob selection structure
  *
- * OneNAND write with ECC
+ * Write with ECC
  */
-static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
-	size_t *retlen, const u_char *buf,
-	u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
+	size_t *retlen, const u_char *buf)
 {
 	struct onenand_chip *this = mtd->priv;
 	int written = 0;
 	int ret = 0;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "onenand_write: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
 
 	/* Initialize retlen, in case of early exit */
 	*retlen = 0;
 
 	/* Do not allow writes past end of device */
 	if (unlikely((to + len) > mtd->size)) {
-		DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: Attempt write to past end of device\n");
+		DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: Attempt write to past end of device\n");
 		return -EINVAL;
 	}
 
 	/* Reject writes, which are not page aligned */
         if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(len))) {
-                DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: Attempt to write not page aligned data\n");
+                DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: Attempt to write not page aligned data\n");
                 return -EINVAL;
         }
 
@@ -796,20 +866,20 @@ static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 
 	/* Loop until all data write */
 	while (written < len) {
-		int thislen = min_t(int, mtd->oobblock, len - written);
+		int thislen = min_t(int, mtd->writesize, len - written);
 
-		this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+		this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
 
 		this->write_bufferram(mtd, ONENAND_DATARAM, buf, 0, thislen);
 		this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
 
-		this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
+		this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
 
 		onenand_update_bufferram(mtd, to, 1);
 
 		ret = this->wait(mtd, FL_WRITING);
 		if (ret) {
-			DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: write filaed %d\n", ret);
+			DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: write filaed %d\n", ret);
 			goto out;
 		}
 
@@ -818,7 +888,7 @@ static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 		/* Only check verify write turn on */
 		ret = onenand_verify_page(mtd, (u_char *) buf, to);
 		if (ret) {
-			DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: verify failed %d\n", ret);
+			DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: verify failed %d\n", ret);
 			goto out;
 		}
 
@@ -839,24 +909,7 @@ out:
 }
 
 /**
- * onenand_write - [MTD Interface] compability function for onenand_write_ecc
- * @param mtd		MTD device structure
- * @param to		offset to write to
- * @param len		number of bytes to write
- * @param retlen	pointer to variable to store the number of written bytes
- * @param buf		the data to write
- *
- * This function simply calls onenand_write_ecc
- * with oob buffer and oobsel = NULL
- */
-static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
-	size_t *retlen, const u_char *buf)
-{
-	return onenand_write_ecc(mtd, to, len, retlen, buf, NULL, NULL);
-}
-
-/**
- * onenand_write_oob - [MTD Interface] OneNAND write out-of-band
+ * onenand_do_write_oob - [Internal] OneNAND write out-of-band
  * @param mtd		MTD device structure
  * @param to		offset to write to
  * @param len		number of bytes to write
@@ -865,11 +918,11 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
  *
  * OneNAND write out-of-band
  */
-static int onenand_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
-	size_t *retlen, const u_char *buf)
+static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
+				size_t *retlen, const u_char *buf)
 {
 	struct onenand_chip *this = mtd->priv;
-	int column, status;
+	int column, ret = 0;
 	int written = 0;
 
 	DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
@@ -894,16 +947,27 @@ static int onenand_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
 
 		this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize);
 
-		this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
-		this->write_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen);
+		/* We send data to spare ram with oobsize
+		 * to prevent byte access */
+		memset(this->page_buf, 0xff, mtd->oobsize);
+		memcpy(this->page_buf + column, buf, thislen);
+		this->write_bufferram(mtd, ONENAND_SPARERAM, this->page_buf, 0, mtd->oobsize);
 
 		this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize);
 
 		onenand_update_bufferram(mtd, to, 0);
 
-		status = this->wait(mtd, FL_WRITING);
-		if (status)
+		ret = this->wait(mtd, FL_WRITING);
+		if (ret) {
+			DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: write filaed %d\n", ret);
+			goto out;
+		}
+
+		ret = onenand_verify_oob(mtd, buf, to, thislen);
+		if (ret) {
+			DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: verify failed %d\n", ret);
 			goto out;
+		}
 
 		written += thislen;
 
@@ -920,145 +984,22 @@ out:
 
 	*retlen = written;
 
-	return 0;
+	return ret;
 }
 
 /**
- * onenand_writev_ecc - [MTD Interface] write with iovec with ecc
- * @param mtd		MTD device structure
- * @param vecs		the iovectors to write
- * @param count		number of vectors
- * @param to		offset to write to
- * @param retlen	pointer to variable to store the number of written bytes
- * @param eccbuf	filesystem supplied oob data buffer
- * @param oobsel	oob selection structure
- *
- * OneNAND write with iovec with ecc
+ * onenand_write_oob - [MTD Interface] NAND write data and/or out-of-band
+ * @mtd:	MTD device structure
+ * @from:	offset to read from
+ * @ops:	oob operation description structure
  */
-static int onenand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
-	unsigned long count, loff_t to, size_t *retlen,
-	u_char *eccbuf, struct nand_oobinfo *oobsel)
+static int onenand_write_oob(struct mtd_info *mtd, loff_t to,
+			     struct mtd_oob_ops *ops)
 {
-	struct onenand_chip *this = mtd->priv;
-	unsigned char *pbuf;
-	size_t total_len, len;
-	int i, written = 0;
-	int ret = 0;
-
-	/* Preset written len for early exit */
-	*retlen = 0;
-
-	/* Calculate total length of data */
-	total_len = 0;
-	for (i = 0; i < count; i++)
-		total_len += vecs[i].iov_len;
-
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_writev_ecc: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count);
-
-	/* Do not allow write past end of the device */
-	if (unlikely((to + total_len) > mtd->size)) {
-		DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: Attempted write past end of device\n");
-		return -EINVAL;
-	}
-
-	/* Reject writes, which are not page aligned */
-        if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(total_len))) {
-                DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: Attempt to write not page aligned data\n");
-                return -EINVAL;
-        }
-
-	/* Grab the lock and see if the device is available */
-	onenand_get_device(mtd, FL_WRITING);
-
-	/* TODO handling oob */
-
-	/* Loop until all keve's data has been written */
-	len = 0;
-	while (count) {
-		pbuf = this->page_buf;
-		/*
-		 * If the given tuple is >= pagesize then
-		 * write it out from the iov
-		 */
-		if ((vecs->iov_len - len) >= mtd->oobblock) {
-			pbuf = vecs->iov_base + len;
-
-			len += mtd->oobblock;
-
-			/* Check, if we have to switch to the next tuple */
-			if (len >= (int) vecs->iov_len) {
-				vecs++;
-				len = 0;
-				count--;
-			}
-		} else {
-			int cnt = 0, thislen;
-			while (cnt < mtd->oobblock) {
-				thislen = min_t(int, mtd->oobblock - cnt, vecs->iov_len - len);
-				memcpy(this->page_buf + cnt, vecs->iov_base + len, thislen);
-				cnt += thislen;
-				len += thislen;
-
-				/* Check, if we have to switch to the next tuple */
-				if (len >= (int) vecs->iov_len) {
-					vecs++;
-					len = 0;
-					count--;
-				}
-			}
-		}
-
-		this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+	BUG_ON(ops->mode != MTD_OOB_PLACE);
 
-		this->write_bufferram(mtd, ONENAND_DATARAM, pbuf, 0, mtd->oobblock);
-		this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
-
-		this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
-
-		onenand_update_bufferram(mtd, to, 1);
-
-		ret = this->wait(mtd, FL_WRITING);
-		if (ret) {
-			DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: write failed %d\n", ret);
-			goto out;
-		}
-
-
-		/* Only check verify write turn on */
-		ret = onenand_verify_page(mtd, (u_char *) pbuf, to);
-		if (ret) {
-			DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: verify failed %d\n", ret);
-			goto out;
-		}
-
-		written += mtd->oobblock;
-
-		to += mtd->oobblock;
-	}
-
-out:
-	/* Deselect and wakt up anyone waiting on the device */
-	onenand_release_device(mtd);
-
-	*retlen = written;
-
-	return 0;
-}
-
-/**
- * onenand_writev - [MTD Interface] compabilty function for onenand_writev_ecc
- * @param mtd		MTD device structure
- * @param vecs		the iovectors to write
- * @param count		number of vectors
- * @param to		offset to write to
- * @param retlen	pointer to variable to store the number of written bytes
- *
- * OneNAND write with kvec. This just calls the ecc function
- */
-static int onenand_writev(struct mtd_info *mtd, const struct kvec *vecs,
-	unsigned long count, loff_t to, size_t *retlen)
-{
-	return onenand_writev_ecc(mtd, vecs, count, to, retlen, NULL, NULL);
+	return onenand_do_write_oob(mtd, to + ops->ooboffs, ops->len,
+				    &ops->retlen, ops->oobbuf);
 }
 
 /**
@@ -1227,7 +1168,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
 
         /* We write two bytes, so we dont have to mess with 16 bit access */
         ofs += mtd->oobsize + (bbm->badblockpos & ~0x01);
-        return mtd->write_oob(mtd, ofs , 2, &retlen, buf);
+        return onenand_do_write_oob(mtd, ofs , 2, &retlen, buf);
 }
 
 /**
@@ -1324,6 +1265,304 @@ static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
 	return 0;
 }
 
+#ifdef CONFIG_MTD_ONENAND_OTP
+
+/* Interal OTP operation */
+typedef int (*otp_op_t)(struct mtd_info *mtd, loff_t form, size_t len,
+		size_t *retlen, u_char *buf);
+
+/**
+ * do_otp_read - [DEFAULT] Read OTP block area
+ * @param mtd		MTD device structure
+ * @param from		The offset to read
+ * @param len		number of bytes to read
+ * @param retlen	pointer to variable to store the number of readbytes
+ * @param buf		the databuffer to put/get data
+ *
+ * Read OTP block area.
+ */
+static int do_otp_read(struct mtd_info *mtd, loff_t from, size_t len,
+		size_t *retlen, u_char *buf)
+{
+	struct onenand_chip *this = mtd->priv;
+	int ret;
+
+	/* Enter OTP access mode */
+	this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
+	this->wait(mtd, FL_OTPING);
+
+	ret = mtd->read(mtd, from, len, retlen, buf);
+
+	/* Exit OTP access mode */
+	this->command(mtd, ONENAND_CMD_RESET, 0, 0);
+	this->wait(mtd, FL_RESETING);
+
+	return ret;
+}
+
+/**
+ * do_otp_write - [DEFAULT] Write OTP block area
+ * @param mtd		MTD device structure
+ * @param from		The offset to write
+ * @param len		number of bytes to write
+ * @param retlen	pointer to variable to store the number of write bytes
+ * @param buf		the databuffer to put/get data
+ *
+ * Write OTP block area.
+ */
+static int do_otp_write(struct mtd_info *mtd, loff_t from, size_t len,
+		size_t *retlen, u_char *buf)
+{
+	struct onenand_chip *this = mtd->priv;
+	unsigned char *pbuf = buf;
+	int ret;
+
+	/* Force buffer page aligned */
+	if (len < mtd->writesize) {
+		memcpy(this->page_buf, buf, len);
+		memset(this->page_buf + len, 0xff, mtd->writesize - len);
+		pbuf = this->page_buf;
+		len = mtd->writesize;
+	}
+
+	/* Enter OTP access mode */
+	this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
+	this->wait(mtd, FL_OTPING);
+
+	ret = mtd->write(mtd, from, len, retlen, pbuf);
+
+	/* Exit OTP access mode */
+	this->command(mtd, ONENAND_CMD_RESET, 0, 0);
+	this->wait(mtd, FL_RESETING);
+
+	return ret;
+}
+
+/**
+ * do_otp_lock - [DEFAULT] Lock OTP block area
+ * @param mtd		MTD device structure
+ * @param from		The offset to lock
+ * @param len		number of bytes to lock
+ * @param retlen	pointer to variable to store the number of lock bytes
+ * @param buf		the databuffer to put/get data
+ *
+ * Lock OTP block area.
+ */
+static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len,
+		size_t *retlen, u_char *buf)
+{
+	struct onenand_chip *this = mtd->priv;
+	int ret;
+
+	/* Enter OTP access mode */
+	this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
+	this->wait(mtd, FL_OTPING);
+
+	ret = onenand_do_write_oob(mtd, from, len, retlen, buf);
+
+	/* Exit OTP access mode */
+	this->command(mtd, ONENAND_CMD_RESET, 0, 0);
+	this->wait(mtd, FL_RESETING);
+
+	return ret;
+}
+
+/**
+ * onenand_otp_walk - [DEFAULT] Handle OTP operation
+ * @param mtd		MTD device structure
+ * @param from		The offset to read/write
+ * @param len		number of bytes to read/write
+ * @param retlen	pointer to variable to store the number of read bytes
+ * @param buf		the databuffer to put/get data
+ * @param action	do given action
+ * @param mode		specify user and factory
+ *
+ * Handle OTP operation.
+ */
+static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
+			size_t *retlen, u_char *buf,
+			otp_op_t action, int mode)
+{
+	struct onenand_chip *this = mtd->priv;
+	int otp_pages;
+	int density;
+	int ret = 0;
+
+	*retlen = 0;
+
+	density = this->device_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+	if (density < ONENAND_DEVICE_DENSITY_512Mb)
+		otp_pages = 20;
+	else
+		otp_pages = 10;
+
+	if (mode == MTD_OTP_FACTORY) {
+		from += mtd->writesize * otp_pages;
+		otp_pages = 64 - otp_pages;
+	}
+
+	/* Check User/Factory boundary */
+	if (((mtd->writesize * otp_pages) - (from + len)) < 0)
+		return 0;
+
+	while (len > 0 && otp_pages > 0) {
+		if (!action) {	/* OTP Info functions */
+			struct otp_info *otpinfo;
+
+			len -= sizeof(struct otp_info);
+			if (len <= 0)
+				return -ENOSPC;
+
+			otpinfo = (struct otp_info *) buf;
+			otpinfo->start = from;
+			otpinfo->length = mtd->writesize;
+			otpinfo->locked = 0;
+
+			from += mtd->writesize;
+			buf += sizeof(struct otp_info);
+			*retlen += sizeof(struct otp_info);
+		} else {
+			size_t tmp_retlen;
+			int size = len;
+
+			ret = action(mtd, from, len, &tmp_retlen, buf);
+
+			buf += size;
+			len -= size;
+			*retlen += size;
+
+			if (ret < 0)
+				return ret;
+		}
+		otp_pages--;
+	}
+
+	return 0;
+}
+
+/**
+ * onenand_get_fact_prot_info - [MTD Interface] Read factory OTP info
+ * @param mtd		MTD device structure
+ * @param buf		the databuffer to put/get data
+ * @param len		number of bytes to read
+ *
+ * Read factory OTP info.
+ */
+static int onenand_get_fact_prot_info(struct mtd_info *mtd,
+			struct otp_info *buf, size_t len)
+{
+	size_t retlen;
+	int ret;
+
+	ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_FACTORY);
+
+	return ret ? : retlen;
+}
+
+/**
+ * onenand_read_fact_prot_reg - [MTD Interface] Read factory OTP area
+ * @param mtd		MTD device structure
+ * @param from		The offset to read
+ * @param len		number of bytes to read
+ * @param retlen	pointer to variable to store the number of read bytes
+ * @param buf		the databuffer to put/get data
+ *
+ * Read factory OTP area.
+ */
+static int onenand_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
+			size_t len, size_t *retlen, u_char *buf)
+{
+	return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_FACTORY);
+}
+
+/**
+ * onenand_get_user_prot_info - [MTD Interface] Read user OTP info
+ * @param mtd		MTD device structure
+ * @param buf		the databuffer to put/get data
+ * @param len		number of bytes to read
+ *
+ * Read user OTP info.
+ */
+static int onenand_get_user_prot_info(struct mtd_info *mtd,
+			struct otp_info *buf, size_t len)
+{
+	size_t retlen;
+	int ret;
+
+	ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_USER);
+
+	return ret ? : retlen;
+}
+
+/**
+ * onenand_read_user_prot_reg - [MTD Interface] Read user OTP area
+ * @param mtd		MTD device structure
+ * @param from		The offset to read
+ * @param len		number of bytes to read
+ * @param retlen	pointer to variable to store the number of read bytes
+ * @param buf		the databuffer to put/get data
+ *
+ * Read user OTP area.
+ */
+static int onenand_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
+			size_t len, size_t *retlen, u_char *buf)
+{
+	return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_USER);
+}
+
+/**
+ * onenand_write_user_prot_reg - [MTD Interface] Write user OTP area
+ * @param mtd		MTD device structure
+ * @param from		The offset to write
+ * @param len		number of bytes to write
+ * @param retlen	pointer to variable to store the number of write bytes
+ * @param buf		the databuffer to put/get data
+ *
+ * Write user OTP area.
+ */
+static int onenand_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
+			size_t len, size_t *retlen, u_char *buf)
+{
+	return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_write, MTD_OTP_USER);
+}
+
+/**
+ * onenand_lock_user_prot_reg - [MTD Interface] Lock user OTP area
+ * @param mtd		MTD device structure
+ * @param from		The offset to lock
+ * @param len		number of bytes to unlock
+ *
+ * Write lock mark on spare area in page 0 in OTP block
+ */
+static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
+			size_t len)
+{
+	unsigned char oob_buf[64];
+	size_t retlen;
+	int ret;
+
+	memset(oob_buf, 0xff, mtd->oobsize);
+	/*
+	 * Note: OTP lock operation
+	 *       OTP block : 0xXXFC
+	 *       1st block : 0xXXF3 (If chip support)
+	 *       Both      : 0xXXF0 (If chip support)
+	 */
+	oob_buf[ONENAND_OTP_LOCK_OFFSET] = 0xFC;
+
+	/*
+	 * Write lock mark to 8th word of sector0 of page0 of the spare0.
+	 * We write 16 bytes spare area instead of 2 bytes.
+	 */
+	from = 0;
+	len = 16;
+
+	ret = onenand_otp_walk(mtd, from, len, &retlen, oob_buf, do_otp_lock, MTD_OTP_USER);
+
+	return ret ? : retlen;
+}
+#endif	/* CONFIG_MTD_ONENAND_OTP */
+
 /**
  * onenand_print_device_info - Print device ID
  * @param device        device ID
@@ -1423,15 +1662,15 @@ static int onenand_probe(struct mtd_info *mtd)
 
 	/* OneNAND page size & block size */
 	/* The data buffer size is equal to page size */
-	mtd->oobblock = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
-	mtd->oobsize = mtd->oobblock >> 5;
+	mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
+	mtd->oobsize = mtd->writesize >> 5;
 	/* Pagers per block is always 64 in OneNAND */
-	mtd->erasesize = mtd->oobblock << 6;
+	mtd->erasesize = mtd->writesize << 6;
 
 	this->erase_shift = ffs(mtd->erasesize) - 1;
-	this->page_shift = ffs(mtd->oobblock) - 1;
+	this->page_shift = ffs(mtd->writesize) - 1;
 	this->ppb_shift = (this->erase_shift - this->page_shift);
-	this->page_mask = (mtd->erasesize / mtd->oobblock) - 1;
+	this->page_mask = (mtd->erasesize / mtd->writesize) - 1;
 
 	/* REVIST: Multichip handling */
 
@@ -1475,7 +1714,6 @@ static void onenand_resume(struct mtd_info *mtd)
 				"in suspended state\n");
 }
 
-
 /**
  * onenand_scan - [OneNAND Interface] Scan for the OneNAND device
  * @param mtd		MTD device structure
@@ -1522,7 +1760,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 	/* Allocate buffers, if necessary */
 	if (!this->page_buf) {
 		size_t len;
-		len = mtd->oobblock + mtd->oobsize;
+		len = mtd->writesize + mtd->oobsize;
 		this->page_buf = kmalloc(len, GFP_KERNEL);
 		if (!this->page_buf) {
 			printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n");
@@ -1537,40 +1775,42 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 
 	switch (mtd->oobsize) {
 	case 64:
-		this->autooob = &onenand_oob_64;
+		this->ecclayout = &onenand_oob_64;
 		break;
 
 	case 32:
-		this->autooob = &onenand_oob_32;
+		this->ecclayout = &onenand_oob_32;
 		break;
 
 	default:
 		printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n",
 			mtd->oobsize);
 		/* To prevent kernel oops */
-		this->autooob = &onenand_oob_32;
+		this->ecclayout = &onenand_oob_32;
 		break;
 	}
 
-	memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
+	mtd->ecclayout = this->ecclayout;
 
 	/* Fill in remaining MTD driver data */
 	mtd->type = MTD_NANDFLASH;
-	mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC;
+	mtd->flags = MTD_CAP_NANDFLASH;
 	mtd->ecctype = MTD_ECC_SW;
 	mtd->erase = onenand_erase;
 	mtd->point = NULL;
 	mtd->unpoint = NULL;
 	mtd->read = onenand_read;
 	mtd->write = onenand_write;
-	mtd->read_ecc = onenand_read_ecc;
-	mtd->write_ecc = onenand_write_ecc;
 	mtd->read_oob = onenand_read_oob;
 	mtd->write_oob = onenand_write_oob;
-	mtd->readv = NULL;
-	mtd->readv_ecc = NULL;
-	mtd->writev = onenand_writev;
-	mtd->writev_ecc = onenand_writev_ecc;
+#ifdef CONFIG_MTD_ONENAND_OTP
+	mtd->get_fact_prot_info = onenand_get_fact_prot_info;
+	mtd->read_fact_prot_reg = onenand_read_fact_prot_reg;
+	mtd->get_user_prot_info = onenand_get_user_prot_info;
+	mtd->read_user_prot_reg = onenand_read_user_prot_reg;
+	mtd->write_user_prot_reg = onenand_write_user_prot_reg;
+	mtd->lock_user_prot_reg = onenand_lock_user_prot_reg;
+#endif
 	mtd->sync = onenand_sync;
 	mtd->lock = NULL;
 	mtd->unlock = onenand_unlock;

drivers/mtd/onenand/onenand_bbt.c

@@ -17,6 +17,9 @@
 #include <linux/mtd/onenand.h>
 #include <linux/mtd/compatmac.h>
 
+extern int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
+			       size_t *retlen, u_char *buf);
+
 /**
  * check_short_pattern - [GENERIC] check if a pattern is in the buffer
  * @param buf		the buffer to search
@@ -87,13 +90,13 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 
 			/* No need to read pages fully,
 			 * just read required OOB bytes */
-			ret = mtd->read_oob(mtd, from + j * mtd->oobblock + bd->offs,
-						readlen, &retlen, &buf[0]);
+			ret = onenand_do_read_oob(mtd, from + j * mtd->writesize + bd->offs,
+						  readlen, &retlen, &buf[0]);
 
 			if (ret)
 				return ret;
 
-			if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) {
+			if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) {
 				bbm->bbt[i >> 3] |= 0x03 << (i & 0x6);
 				printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
 					i >> 1, (unsigned int) from);

drivers/mtd/redboot.c

@@ -1,5 +1,5 @@
 /*
- * $Id: redboot.c,v 1.19 2005/12/01 10:03:51 dwmw2 Exp $
+ * $Id: redboot.c,v 1.21 2006/03/30 18:34:37 bjd Exp $
  *
  * Parse RedBoot-style Flash Image System (FIS) tables and
  * produce a Linux partition array to match.
@@ -15,14 +15,14 @@
 
 struct fis_image_desc {
     unsigned char name[16];      // Null terminated name
-    unsigned long flash_base;    // Address within FLASH of image
-    unsigned long mem_base;      // Address in memory where it executes
-    unsigned long size;          // Length of image
-    unsigned long entry_point;   // Execution entry point
-    unsigned long data_length;   // Length of actual data
-    unsigned char _pad[256-(16+7*sizeof(unsigned long))];
-    unsigned long desc_cksum;    // Checksum over image descriptor
-    unsigned long file_cksum;    // Checksum over image data
+    uint32_t	  flash_base;    // Address within FLASH of image
+    uint32_t	  mem_base;      // Address in memory where it executes
+    uint32_t	  size;          // Length of image
+    uint32_t	  entry_point;   // Execution entry point
+    uint32_t	  data_length;   // Length of actual data
+    unsigned char _pad[256-(16+7*sizeof(uint32_t))];
+    uint32_t	  desc_cksum;    // Checksum over image descriptor
+    uint32_t	  file_cksum;    // Checksum over image data
 };
 
 struct fis_list {

drivers/mtd/rfd_ftl.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2005  Sean Young <sean@mess.org>
  *
- * $Id: rfd_ftl.c,v 1.5 2005/11/07 11:14:21 gleixner Exp $
+ * $Id: rfd_ftl.c,v 1.8 2006/01/15 12:51:44 sean Exp $
  *
  * This type of flash translation layer (FTL) is used by the Embedded BIOS
  * by General Software. It is known as the Resident Flash Disk (RFD), see:
@@ -61,6 +61,7 @@ struct block {
 		BLOCK_OK,
 		BLOCK_ERASING,
 		BLOCK_ERASED,
+		BLOCK_UNUSED,
 		BLOCK_FAILED
 	} state;
 	int free_sectors;
@@ -99,10 +100,8 @@ static int build_block_map(struct partition *part, int block_no)
 	block->offset = part->block_size * block_no;
 
 	if (le16_to_cpu(part->header_cache[0]) != RFD_MAGIC) {
-		block->state = BLOCK_ERASED; /* assumption */
-		block->free_sectors = part->data_sectors_per_block;
-		part->reserved_block = block_no;
-		return 1;
+		block->state = BLOCK_UNUSED;
+		return -ENOENT;
 	}
 
 	block->state = BLOCK_OK;
@@ -124,7 +123,7 @@ static int build_block_map(struct partition *part, int block_no)
 			entry = 0;
 
 		if (entry >= part->sector_count) {
-			printk(KERN_NOTICE PREFIX
+			printk(KERN_WARNING PREFIX
 				"'%s': unit #%d: entry %d corrupt, "
 				"sector %d out of range\n",
 				part->mbd.mtd->name, block_no, i, entry);
@@ -132,7 +131,7 @@ static int build_block_map(struct partition *part, int block_no)
 		}
 
 		if (part->sector_map[entry] != -1) {
-			printk(KERN_NOTICE PREFIX
+			printk(KERN_WARNING PREFIX
 				"'%s': more than one entry for sector %d\n",
 				part->mbd.mtd->name, entry);
 			part->errors = 1;
@@ -167,7 +166,7 @@ static int scan_header(struct partition *part)
 	/* each erase block has three bytes header, followed by the map */
 	part->header_sectors_per_block =
 			((HEADER_MAP_OFFSET + sectors_per_block) *
-		 	sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE;
+			sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE;
 
 	part->data_sectors_per_block = sectors_per_block -
 			part->header_sectors_per_block;
@@ -226,7 +225,7 @@ static int scan_header(struct partition *part)
 	}
 
 	if (part->reserved_block == -1) {
-		printk(KERN_NOTICE PREFIX "'%s': no empty erase unit found\n",
+		printk(KERN_WARNING PREFIX "'%s': no empty erase unit found\n",
 				part->mbd.mtd->name);
 
 		part->errors = 1;
@@ -315,7 +314,7 @@ static void erase_callback(struct erase_info *erase)
 		rc = -EIO;
 
 	if (rc) {
-		printk(KERN_NOTICE PREFIX "'%s': unable to write RFD "
+		printk(KERN_ERR PREFIX "'%s': unable to write RFD "
 				"header at 0x%lx\n",
 				part->mbd.mtd->name,
 				part->blocks[i].offset);
@@ -348,7 +347,7 @@ static int erase_block(struct partition *part, int block)
 	rc = part->mbd.mtd->erase(part->mbd.mtd, erase);
 
 	if (rc) {
-		printk(KERN_WARNING PREFIX "erase of region %x,%x on '%s' "
+		printk(KERN_ERR PREFIX "erase of region %x,%x on '%s' "
 				"failed\n", erase->addr, erase->len,
 				part->mbd.mtd->name);
 		kfree(erase);
@@ -383,7 +382,7 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old
 		rc = -EIO;
 
 	if (rc) {
-		printk(KERN_NOTICE PREFIX "error reading '%s' at "
+		printk(KERN_ERR PREFIX "error reading '%s' at "
 			"0x%lx\n", part->mbd.mtd->name,
 			part->blocks[block_no].offset);
 
@@ -423,7 +422,7 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old
 			rc = -EIO;
 
 		if (rc) {
-			printk(KERN_NOTICE PREFIX "'%s': Unable to "
+			printk(KERN_ERR PREFIX "'%s': Unable to "
 				"read sector for relocation\n",
 				part->mbd.mtd->name);
 
@@ -520,7 +519,7 @@ static int reclaim_block(struct partition *part, u_long *old_sector)
  * because if we fill that one up first it'll have the most chance of having
  * the least live sectors at reclaim.
  */
-static int find_free_block(const struct partition *part)
+static int find_free_block(struct partition *part)
 {
 	int block, stop;
 
@@ -533,6 +532,9 @@ static int find_free_block(const struct partition *part)
 				block != part->reserved_block)
 			return block;
 
+		if (part->blocks[block].state == BLOCK_UNUSED)
+			erase_block(part, block);
+
 		if (++block >= part->total_blocks)
 			block = 0;
 
@@ -541,7 +543,7 @@ static int find_free_block(const struct partition *part)
 	return -1;
 }
 
-static int find_writeable_block(struct partition *part, u_long *old_sector)
+static int find_writable_block(struct partition *part, u_long *old_sector)
 {
 	int rc, block;
 	size_t retlen;
@@ -570,7 +572,7 @@ static int find_writeable_block(struct partition *part, u_long *old_sector)
 		rc = -EIO;
 
 	if (rc) {
-		printk(KERN_NOTICE PREFIX "'%s': unable to read header at "
+		printk(KERN_ERR PREFIX "'%s': unable to read header at "
 				"0x%lx\n", part->mbd.mtd->name,
 				part->blocks[block].offset);
 		goto err;
@@ -602,7 +604,7 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
 		rc = -EIO;
 
 	if (rc) {
-		printk(KERN_WARNING PREFIX "error writing '%s' at "
+		printk(KERN_ERR PREFIX "error writing '%s' at "
 			"0x%lx\n", part->mbd.mtd->name, addr);
 		if (rc)
 			goto err;
@@ -652,7 +654,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
 	if (part->current_block == -1 ||
 		!part->blocks[part->current_block].free_sectors) {
 
-		rc = find_writeable_block(part, old_addr);
+		rc = find_writable_block(part, old_addr);
 		if (rc)
 			goto err;
 	}
@@ -675,7 +677,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
 		rc = -EIO;
 
 	if (rc) {
-		printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n",
+		printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n",
 				part->mbd.mtd->name, addr);
 		if (rc)
 			goto err;
@@ -695,7 +697,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
 		rc = -EIO;
 
 	if (rc) {
-		printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n",
+		printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n",
 				part->mbd.mtd->name, addr);
 		if (rc)
 			goto err;
@@ -776,7 +778,7 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 		part->block_size = block_size;
 	else {
 		if (!mtd->erasesize) {
-			printk(KERN_NOTICE PREFIX "please provide block_size");
+			printk(KERN_WARNING PREFIX "please provide block_size");
 			return;
 		}
 		else
@@ -791,8 +793,8 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 		if (!(mtd->flags & MTD_WRITEABLE))
 			part->mbd.readonly = 1;
 		else if (part->errors) {
-			printk(KERN_NOTICE PREFIX "'%s': errors found, "
-					"setting read-only", mtd->name);
+			printk(KERN_WARNING PREFIX "'%s': errors found, "
+					"setting read-only\n", mtd->name);
 			part->mbd.readonly = 1;
 		}
 

fs/Kconfig

@@ -1101,6 +1101,44 @@ config JFFS2_SUMMARY
 
 	  If unsure, say 'N'.
 
+config JFFS2_FS_XATTR
+	bool "JFFS2 XATTR support (EXPERIMENTAL)"
+	depends on JFFS2_FS && EXPERIMENTAL && !JFFS2_FS_WRITEBUFFER
+	default n
+	help
+	  Extended attributes are name:value pairs associated with inodes by
+	  the kernel or by users (see the attr(5) manual page, or visit
+	  <http://acl.bestbits.at/> for details).
+	  
+	  If unsure, say N.
+
+config JFFS2_FS_POSIX_ACL
+	bool "JFFS2 POSIX Access Control Lists"
+	depends on JFFS2_FS_XATTR
+	default y
+	select FS_POSIX_ACL
+	help
+	  Posix Access Control Lists (ACLs) support permissions for users and
+	  groups beyond the owner/group/world scheme.
+	  
+	  To learn more about Access Control Lists, visit the Posix ACLs for
+	  Linux website <http://acl.bestbits.at/>.
+	  
+	  If you don't know what Access Control Lists are, say N
+
+config JFFS2_FS_SECURITY
+	bool "JFFS2 Security Labels"
+	depends on JFFS2_FS_XATTR
+	default y
+	help
+	  Security labels support alternative access control models
+	  implemented by security modules like SELinux.  This option
+	  enables an extended attribute handler for file security
+	  labels in the jffs2 filesystem.
+	  
+	  If you are not using a security module that requires using
+	  extended attributes for file security labels, say N.
+
 config JFFS2_COMPRESSION_OPTIONS
 	bool "Advanced compression options for JFFS2"
 	depends on JFFS2_FS

fs/jffs/intrep.c

@@ -247,7 +247,7 @@ flash_safe_read(struct mtd_info *mtd, loff_t from,
 	D3(printk(KERN_NOTICE "flash_safe_read(%p, %08x, %p, %08x)\n",
 		  mtd, (unsigned int) from, buf, count));
 
-	res = MTD_READ(mtd, from, count, &retlen, buf);
+	res = mtd->read(mtd, from, count, &retlen, buf);
 	if (retlen != count) {
 		panic("Didn't read all bytes in flash_safe_read(). Returned %d\n", res);
 	}
@@ -262,7 +262,7 @@ flash_read_u32(struct mtd_info *mtd, loff_t from)
 	__u32 ret;
 	int res;
 
-	res = MTD_READ(mtd, from, 4, &retlen, (unsigned char *)&ret);
+	res = mtd->read(mtd, from, 4, &retlen, (unsigned char *)&ret);
 	if (retlen != 4) {
 		printk("Didn't read all bytes in flash_read_u32(). Returned %d\n", res);
 		return 0;
@@ -282,7 +282,7 @@ flash_safe_write(struct mtd_info *mtd, loff_t to,
 	D3(printk(KERN_NOTICE "flash_safe_write(%p, %08x, %p, %08x)\n",
 		  mtd, (unsigned int) to, buf, count));
 
-	res = MTD_WRITE(mtd, to, count, &retlen, buf);
+	res = mtd->write(mtd, to, count, &retlen, buf);
 	if (retlen != count) {
 		printk("Didn't write all bytes in flash_safe_write(). Returned %d\n", res);
 	}
@@ -300,9 +300,9 @@ flash_safe_writev(struct mtd_info *mtd, const struct kvec *vecs,
 
 	D3(printk(KERN_NOTICE "flash_safe_writev(%p, %08x, %p)\n",
 		  mtd, (unsigned int) to, vecs));
-	
+
 	if (mtd->writev) {
-		res = MTD_WRITEV(mtd, vecs, iovec_cnt, to, &retlen);
+		res = mtd->writev(mtd, vecs, iovec_cnt, to, &retlen);
 		return res ? res : retlen;
 	}
 	/* Not implemented writev. Repeatedly use write - on the not so
@@ -312,7 +312,8 @@ flash_safe_writev(struct mtd_info *mtd, const struct kvec *vecs,
 	retlen=0;
 
 	for (i=0; !res && i<iovec_cnt; i++) {
-		res = MTD_WRITE(mtd, to, vecs[i].iov_len, &retlen_a, vecs[i].iov_base);
+		res = mtd->write(mtd, to, vecs[i].iov_len, &retlen_a,
+				 vecs[i].iov_base);
 		if (retlen_a != vecs[i].iov_len) {
 			printk("Didn't write all bytes in flash_safe_writev(). Returned %d\n", res);
 			if (i != iovec_cnt-1)
@@ -393,7 +394,7 @@ flash_erase_region(struct mtd_info *mtd, loff_t start,
 	set_current_state(TASK_UNINTERRUPTIBLE);
 	add_wait_queue(&wait_q, &wait);
 
-	if (MTD_ERASE(mtd, erase) < 0) {
+	if (mtd->erase(mtd, erase) < 0) {
 		set_current_state(TASK_RUNNING);
 		remove_wait_queue(&wait_q, &wait);
 		kfree(erase);

fs/jffs2/Makefile

@@ -12,6 +12,9 @@ jffs2-y	+= symlink.o build.o erase.o background.o fs.o writev.o
 jffs2-y	+= super.o debug.o
 
 jffs2-$(CONFIG_JFFS2_FS_WRITEBUFFER)	+= wbuf.o
+jffs2-$(CONFIG_JFFS2_FS_XATTR)		+= xattr.o xattr_trusted.o xattr_user.o
+jffs2-$(CONFIG_JFFS2_FS_SECURITY)	+= security.o
+jffs2-$(CONFIG_JFFS2_FS_POSIX_ACL)	+= acl.o
 jffs2-$(CONFIG_JFFS2_RUBIN)	+= compr_rubin.o
 jffs2-$(CONFIG_JFFS2_RTIME)	+= compr_rtime.o
 jffs2-$(CONFIG_JFFS2_ZLIB)	+= compr_zlib.o

fs/jffs2/README.Locking

@@ -150,3 +150,24 @@ the buffer.
 
 Ordering constraints:
 	Lock wbuf_sem last, after the alloc_sem or and f->sem.
+
+
+	c->xattr_sem
+	------------
+
+This read/write semaphore protects against concurrent access to the
+xattr related objects which include stuff in superblock and ic->xref.
+In read-only path, write-semaphore is too much exclusion. It's enough
+by read-semaphore. But you must hold write-semaphore when updating,
+creating or deleting any xattr related object.
+
+Once xattr_sem released, there would be no assurance for the existence
+of those objects. Thus, a series of processes is often required to retry,
+when updating such a object is necessary under holding read semaphore.
+For example, do_jffs2_getxattr() holds read-semaphore to scan xref and
+xdatum at first. But it retries this process with holding write-semaphore
+after release read-semaphore, if it's necessary to load name/value pair
+from medium.
+
+Ordering constraints:
+	Lock xattr_sem last, after the alloc_sem.

fs/jffs2/acl.c

@@ -0,0 +1,485 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2006  NEC Corporation
+ *
+ * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/crc32.h>
+#include <linux/jffs2.h>
+#include <linux/xattr.h>
+#include <linux/posix_acl_xattr.h>
+#include <linux/mtd/mtd.h>
+#include "nodelist.h"
+
+static size_t jffs2_acl_size(int count)
+{
+	if (count <= 4) {
+		return sizeof(struct jffs2_acl_header)
+		       + count * sizeof(struct jffs2_acl_entry_short);
+	} else {
+		return sizeof(struct jffs2_acl_header)
+		       + 4 * sizeof(struct jffs2_acl_entry_short)
+		       + (count - 4) * sizeof(struct jffs2_acl_entry);
+	}
+}
+
+static int jffs2_acl_count(size_t size)
+{
+	size_t s;
+
+	size -= sizeof(struct jffs2_acl_header);
+	s = size - 4 * sizeof(struct jffs2_acl_entry_short);
+	if (s < 0) {
+		if (size % sizeof(struct jffs2_acl_entry_short))
+			return -1;
+		return size / sizeof(struct jffs2_acl_entry_short);
+	} else {
+		if (s % sizeof(struct jffs2_acl_entry))
+			return -1;
+		return s / sizeof(struct jffs2_acl_entry) + 4;
+	}
+}
+
+static struct posix_acl *jffs2_acl_from_medium(void *value, size_t size)
+{
+	void *end = value + size;
+	struct jffs2_acl_header *header = value;
+	struct jffs2_acl_entry *entry;
+	struct posix_acl *acl;
+	uint32_t ver;
+	int i, count;
+
+	if (!value)
+		return NULL;
+	if (size < sizeof(struct jffs2_acl_header))
+		return ERR_PTR(-EINVAL);
+	ver = je32_to_cpu(header->a_version);
+	if (ver != JFFS2_ACL_VERSION) {
+		JFFS2_WARNING("Invalid ACL version. (=%u)\n", ver);
+		return ERR_PTR(-EINVAL);
+	}
+
+	value += sizeof(struct jffs2_acl_header);
+	count = jffs2_acl_count(size);
+	if (count < 0)
+		return ERR_PTR(-EINVAL);
+	if (count == 0)
+		return NULL;
+
+	acl = posix_acl_alloc(count, GFP_KERNEL);
+	if (!acl)
+		return ERR_PTR(-ENOMEM);
+
+	for (i=0; i < count; i++) {
+		entry = value;
+		if (value + sizeof(struct jffs2_acl_entry_short) > end)
+			goto fail;
+		acl->a_entries[i].e_tag = je16_to_cpu(entry->e_tag);
+		acl->a_entries[i].e_perm = je16_to_cpu(entry->e_perm);
+		switch (acl->a_entries[i].e_tag) {
+			case ACL_USER_OBJ:
+			case ACL_GROUP_OBJ:
+			case ACL_MASK:
+			case ACL_OTHER:
+				value += sizeof(struct jffs2_acl_entry_short);
+				acl->a_entries[i].e_id = ACL_UNDEFINED_ID;
+				break;
+
+			case ACL_USER:
+			case ACL_GROUP:
+				value += sizeof(struct jffs2_acl_entry);
+				if (value > end)
+					goto fail;
+				acl->a_entries[i].e_id = je32_to_cpu(entry->e_id);
+				break;
+
+			default:
+				goto fail;
+		}
+	}
+	if (value != end)
+		goto fail;
+	return acl;
+ fail:
+	posix_acl_release(acl);
+	return ERR_PTR(-EINVAL);
+}
+
+static void *jffs2_acl_to_medium(const struct posix_acl *acl, size_t *size)
+{
+	struct jffs2_acl_header *header;
+	struct jffs2_acl_entry *entry;
+	void *e;
+	size_t i;
+
+	*size = jffs2_acl_size(acl->a_count);
+	header = kmalloc(sizeof(*header) + acl->a_count * sizeof(*entry), GFP_KERNEL);
+	if (!header)
+		return ERR_PTR(-ENOMEM);
+	header->a_version = cpu_to_je32(JFFS2_ACL_VERSION);
+	e = header + 1;
+	for (i=0; i < acl->a_count; i++) {
+		entry = e;
+		entry->e_tag = cpu_to_je16(acl->a_entries[i].e_tag);
+		entry->e_perm = cpu_to_je16(acl->a_entries[i].e_perm);
+		switch(acl->a_entries[i].e_tag) {
+			case ACL_USER:
+			case ACL_GROUP:
+				entry->e_id = cpu_to_je32(acl->a_entries[i].e_id);
+				e += sizeof(struct jffs2_acl_entry);
+				break;
+
+			case ACL_USER_OBJ:
+			case ACL_GROUP_OBJ:
+			case ACL_MASK:
+			case ACL_OTHER:
+				e += sizeof(struct jffs2_acl_entry_short);
+				break;
+
+			default:
+				goto fail;
+		}
+	}
+	return header;
+ fail:
+	kfree(header);
+	return ERR_PTR(-EINVAL);
+}
+
+static struct posix_acl *jffs2_iget_acl(struct inode *inode, struct posix_acl **i_acl)
+{
+	struct posix_acl *acl = JFFS2_ACL_NOT_CACHED;
+
+	spin_lock(&inode->i_lock);
+	if (*i_acl != JFFS2_ACL_NOT_CACHED)
+		acl = posix_acl_dup(*i_acl);
+	spin_unlock(&inode->i_lock);
+	return acl;
+}
+
+static void jffs2_iset_acl(struct inode *inode, struct posix_acl **i_acl, struct posix_acl *acl)
+{
+	spin_lock(&inode->i_lock);
+	if (*i_acl != JFFS2_ACL_NOT_CACHED)
+		posix_acl_release(*i_acl);
+	*i_acl = posix_acl_dup(acl);
+	spin_unlock(&inode->i_lock);
+}
+
+static struct posix_acl *jffs2_get_acl(struct inode *inode, int type)
+{
+	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+	struct posix_acl *acl;
+	char *value = NULL;
+	int rc, xprefix;
+
+	switch (type) {
+	case ACL_TYPE_ACCESS:
+		acl = jffs2_iget_acl(inode, &f->i_acl_access);
+		if (acl != JFFS2_ACL_NOT_CACHED)
+			return acl;
+		xprefix = JFFS2_XPREFIX_ACL_ACCESS;
+		break;
+	case ACL_TYPE_DEFAULT:
+		acl = jffs2_iget_acl(inode, &f->i_acl_default);
+		if (acl != JFFS2_ACL_NOT_CACHED)
+			return acl;
+		xprefix = JFFS2_XPREFIX_ACL_DEFAULT;
+		break;
+	default:
+		return ERR_PTR(-EINVAL);
+	}
+	rc = do_jffs2_getxattr(inode, xprefix, "", NULL, 0);
+	if (rc > 0) {
+		value = kmalloc(rc, GFP_KERNEL);
+		if (!value)
+			return ERR_PTR(-ENOMEM);
+		rc = do_jffs2_getxattr(inode, xprefix, "", value, rc);
+	}
+	if (rc > 0) {
+		acl = jffs2_acl_from_medium(value, rc);
+	} else if (rc == -ENODATA || rc == -ENOSYS) {
+		acl = NULL;
+	} else {
+		acl = ERR_PTR(rc);
+	}
+	if (value)
+		kfree(value);
+	if (!IS_ERR(acl)) {
+		switch (type) {
+		case ACL_TYPE_ACCESS:
+			jffs2_iset_acl(inode, &f->i_acl_access, acl);
+			break;
+		case ACL_TYPE_DEFAULT:
+			jffs2_iset_acl(inode, &f->i_acl_default, acl);
+			break;
+		}
+	}
+	return acl;
+}
+
+static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
+{
+	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+	size_t size = 0;
+	char *value = NULL;
+	int rc, xprefix;
+
+	if (S_ISLNK(inode->i_mode))
+		return -EOPNOTSUPP;
+
+	switch (type) {
+	case ACL_TYPE_ACCESS:
+		xprefix = JFFS2_XPREFIX_ACL_ACCESS;
+		if (acl) {
+			mode_t mode = inode->i_mode;
+			rc = posix_acl_equiv_mode(acl, &mode);
+			if (rc < 0)
+				return rc;
+			if (inode->i_mode != mode) {
+				inode->i_mode = mode;
+				jffs2_dirty_inode(inode);
+			}
+			if (rc == 0)
+				acl = NULL;
+		}
+		break;
+	case ACL_TYPE_DEFAULT:
+		xprefix = JFFS2_XPREFIX_ACL_DEFAULT;
+		if (!S_ISDIR(inode->i_mode))
+			return acl ? -EACCES : 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+	if (acl) {
+		value = jffs2_acl_to_medium(acl, &size);
+		if (IS_ERR(value))
+			return PTR_ERR(value);
+	}
+
+	rc = do_jffs2_setxattr(inode, xprefix, "", value, size, 0);
+	if (value)
+		kfree(value);
+	if (!rc) {
+		switch(type) {
+		case ACL_TYPE_ACCESS:
+			jffs2_iset_acl(inode, &f->i_acl_access, acl);
+			break;
+		case ACL_TYPE_DEFAULT:
+			jffs2_iset_acl(inode, &f->i_acl_default, acl);
+			break;
+		}
+	}
+	return rc;
+}
+
+static int jffs2_check_acl(struct inode *inode, int mask)
+{
+	struct posix_acl *acl;
+	int rc;
+
+	acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
+	if (IS_ERR(acl))
+		return PTR_ERR(acl);
+	if (acl) {
+		rc = posix_acl_permission(inode, acl, mask);
+		posix_acl_release(acl);
+		return rc;
+	}
+	return -EAGAIN;
+}
+
+int jffs2_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+	return generic_permission(inode, mask, jffs2_check_acl);
+}
+
+int jffs2_init_acl(struct inode *inode, struct inode *dir)
+{
+	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+	struct posix_acl *acl = NULL, *clone;
+	mode_t mode;
+	int rc = 0;
+
+	f->i_acl_access = JFFS2_ACL_NOT_CACHED;
+	f->i_acl_default = JFFS2_ACL_NOT_CACHED;
+	if (!S_ISLNK(inode->i_mode)) {
+		acl = jffs2_get_acl(dir, ACL_TYPE_DEFAULT);
+		if (IS_ERR(acl))
+			return PTR_ERR(acl);
+		if (!acl)
+			inode->i_mode &= ~current->fs->umask;
+	}
+	if (acl) {
+		if (S_ISDIR(inode->i_mode)) {
+			rc = jffs2_set_acl(inode, ACL_TYPE_DEFAULT, acl);
+			if (rc)
+				goto cleanup;
+		}
+		clone = posix_acl_clone(acl, GFP_KERNEL);
+		rc = -ENOMEM;
+		if (!clone)
+			goto cleanup;
+		mode = inode->i_mode;
+		rc = posix_acl_create_masq(clone, &mode);
+		if (rc >= 0) {
+			inode->i_mode = mode;
+			if (rc > 0)
+				rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
+		}
+		posix_acl_release(clone);
+	}
+ cleanup:
+	posix_acl_release(acl);
+	return rc;
+}
+
+void jffs2_clear_acl(struct inode *inode)
+{
+	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+
+	if (f->i_acl_access && f->i_acl_access != JFFS2_ACL_NOT_CACHED) {
+		posix_acl_release(f->i_acl_access);
+		f->i_acl_access = JFFS2_ACL_NOT_CACHED;
+	}
+	if (f->i_acl_default && f->i_acl_default != JFFS2_ACL_NOT_CACHED) {
+		posix_acl_release(f->i_acl_default);
+		f->i_acl_default = JFFS2_ACL_NOT_CACHED;
+	}
+}
+
+int jffs2_acl_chmod(struct inode *inode)
+{
+	struct posix_acl *acl, *clone;
+	int rc;
+
+	if (S_ISLNK(inode->i_mode))
+		return -EOPNOTSUPP;
+	acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS);
+	if (IS_ERR(acl) || !acl)
+		return PTR_ERR(acl);
+	clone = posix_acl_clone(acl, GFP_KERNEL);
+	posix_acl_release(acl);
+	if (!clone)
+		return -ENOMEM;
+	rc = posix_acl_chmod_masq(clone, inode->i_mode);
+	if (!rc)
+		rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone);
+	posix_acl_release(clone);
+	return rc;
+}
+
+static size_t jffs2_acl_access_listxattr(struct inode *inode, char *list, size_t list_size,
+					 const char *name, size_t name_len)
+{
+	const int retlen = sizeof(POSIX_ACL_XATTR_ACCESS);
+
+	if (list && retlen <= list_size)
+		strcpy(list, POSIX_ACL_XATTR_ACCESS);
+	return retlen;
+}
+
+static size_t jffs2_acl_default_listxattr(struct inode *inode, char *list, size_t list_size,
+					  const char *name, size_t name_len)
+{
+	const int retlen = sizeof(POSIX_ACL_XATTR_DEFAULT);
+
+	if (list && retlen <= list_size)
+		strcpy(list, POSIX_ACL_XATTR_DEFAULT);
+	return retlen;
+}
+
+static int jffs2_acl_getxattr(struct inode *inode, int type, void *buffer, size_t size)
+{
+	struct posix_acl *acl;
+	int rc;
+
+	acl = jffs2_get_acl(inode, type);
+	if (IS_ERR(acl))
+		return PTR_ERR(acl);
+	if (!acl)
+		return -ENODATA;
+	rc = posix_acl_to_xattr(acl, buffer, size);
+	posix_acl_release(acl);
+
+	return rc;
+}
+
+static int jffs2_acl_access_getxattr(struct inode *inode, const char *name, void *buffer, size_t size)
+{
+	if (name[0] != '\0')
+		return -EINVAL;
+	return jffs2_acl_getxattr(inode, ACL_TYPE_ACCESS, buffer, size);
+}
+
+static int jffs2_acl_default_getxattr(struct inode *inode, const char *name, void *buffer, size_t size)
+{
+	if (name[0] != '\0')
+		return -EINVAL;
+	return jffs2_acl_getxattr(inode, ACL_TYPE_DEFAULT, buffer, size);
+}
+
+static int jffs2_acl_setxattr(struct inode *inode, int type, const void *value, size_t size)
+{
+	struct posix_acl *acl;
+	int rc;
+
+	if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
+		return -EPERM;
+
+	if (value) {
+		acl = posix_acl_from_xattr(value, size);
+		if (IS_ERR(acl))
+			return PTR_ERR(acl);
+		if (acl) {
+			rc = posix_acl_valid(acl);
+			if (rc)
+				goto out;
+		}
+	} else {
+		acl = NULL;
+	}
+	rc = jffs2_set_acl(inode, type, acl);
+ out:
+	posix_acl_release(acl);
+	return rc;
+}
+
+static int jffs2_acl_access_setxattr(struct inode *inode, const char *name,
+				     const void *buffer, size_t size, int flags)
+{
+	if (name[0] != '\0')
+		return -EINVAL;
+	return jffs2_acl_setxattr(inode, ACL_TYPE_ACCESS, buffer, size);
+}
+
+static int jffs2_acl_default_setxattr(struct inode *inode, const char *name,
+				      const void *buffer, size_t size, int flags)
+{
+	if (name[0] != '\0')
+		return -EINVAL;
+	return jffs2_acl_setxattr(inode, ACL_TYPE_DEFAULT, buffer, size);
+}
+
+struct xattr_handler jffs2_acl_access_xattr_handler = {
+	.prefix	= POSIX_ACL_XATTR_ACCESS,
+	.list	= jffs2_acl_access_listxattr,
+	.get	= jffs2_acl_access_getxattr,
+	.set	= jffs2_acl_access_setxattr,
+};
+
+struct xattr_handler jffs2_acl_default_xattr_handler = {
+	.prefix	= POSIX_ACL_XATTR_DEFAULT,
+	.list	= jffs2_acl_default_listxattr,
+	.get	= jffs2_acl_default_getxattr,
+	.set	= jffs2_acl_default_setxattr,
+};

fs/jffs2/acl.h

@@ -0,0 +1,45 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2006  NEC Corporation
+ *
+ * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+struct jffs2_acl_entry {
+	jint16_t	e_tag;
+	jint16_t	e_perm;
+	jint32_t	e_id;
+};
+
+struct jffs2_acl_entry_short {
+	jint16_t	e_tag;
+	jint16_t	e_perm;
+};
+
+struct jffs2_acl_header {
+	jint32_t	a_version;
+};
+
+#ifdef CONFIG_JFFS2_FS_POSIX_ACL
+
+#define JFFS2_ACL_NOT_CACHED ((void *)-1)
+
+extern int jffs2_permission(struct inode *, int, struct nameidata *);
+extern int jffs2_acl_chmod(struct inode *);
+extern int jffs2_init_acl(struct inode *, struct inode *);
+extern void jffs2_clear_acl(struct inode *);
+
+extern struct xattr_handler jffs2_acl_access_xattr_handler;
+extern struct xattr_handler jffs2_acl_default_xattr_handler;
+
+#else
+
+#define jffs2_permission NULL
+#define jffs2_acl_chmod(inode)		(0)
+#define jffs2_init_acl(inode,dir)	(0)
+#define jffs2_clear_acl(inode)
+
+#endif	/* CONFIG_JFFS2_FS_POSIX_ACL */

fs/jffs2/build.c

@@ -160,6 +160,7 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
 		ic->scan_dents = NULL;
 		cond_resched();
 	}
+	jffs2_build_xattr_subsystem(c);
 	c->flags &= ~JFFS2_SB_FLAG_BUILDING;
 
 	dbg_fsbuild("FS build complete\n");
@@ -178,6 +179,7 @@ exit:
 				jffs2_free_full_dirent(fd);
 			}
 		}
+		jffs2_clear_xattr_subsystem(c);
 	}
 
 	return ret;

fs/jffs2/compr.c

@@ -412,7 +412,7 @@ void jffs2_free_comprbuf(unsigned char *comprbuf, unsigned char *orig)
                 kfree(comprbuf);
 }
 
-int jffs2_compressors_init(void)
+int __init jffs2_compressors_init(void)
 {
 /* Registering compressors */
 #ifdef CONFIG_JFFS2_ZLIB

fs/jffs2/compr.h

@@ -23,8 +23,8 @@
 #include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/jffs2.h>
-#include <linux/jffs2_fs_i.h>
-#include <linux/jffs2_fs_sb.h>
+#include "jffs2_fs_i.h"
+#include "jffs2_fs_sb.h"
 #include "nodelist.h"
 
 #define JFFS2_RUBINMIPS_PRIORITY 10

fs/jffs2/debug.c

@@ -192,13 +192,13 @@ __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
 		else
 			my_dirty_size += totlen;
 
-		if ((!ref2->next_phys) != (ref2 == jeb->last_node)) {
-			JFFS2_ERROR("node_ref for node at %#08x (mem %p) has next_phys at %#08x (mem %p), last_node is at %#08x (mem %p).\n",
-				ref_offset(ref2), ref2, ref_offset(ref2->next_phys), ref2->next_phys,
-				ref_offset(jeb->last_node), jeb->last_node);
+		if ((!ref_next(ref2)) != (ref2 == jeb->last_node)) {
+			JFFS2_ERROR("node_ref for node at %#08x (mem %p) has next at %#08x (mem %p), last_node is at %#08x (mem %p).\n",
+				    ref_offset(ref2), ref2, ref_offset(ref_next(ref2)), ref_next(ref2),
+				    ref_offset(jeb->last_node), jeb->last_node);
 			goto error;
 		}
-		ref2 = ref2->next_phys;
+		ref2 = ref_next(ref2);
 	}
 
 	if (my_used_size != jeb->used_size) {
@@ -268,9 +268,9 @@ __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
 	}
 
 	printk(JFFS2_DBG);
-	for (ref = jeb->first_node; ; ref = ref->next_phys) {
+	for (ref = jeb->first_node; ; ref = ref_next(ref)) {
 		printk("%#08x(%#x)", ref_offset(ref), ref->__totlen);
-		if (ref->next_phys)
+		if (ref_next(ref))
 			printk("->");
 		else
 			break;

fs/jffs2/debug.h

@@ -171,6 +171,12 @@
 #define dbg_memalloc(fmt, ...)
 #endif
 
+/* Watch the XATTR subsystem */
+#ifdef JFFS2_DBG_XATTR_MESSAGES
+#define dbg_xattr(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
+#else
+#define dbg_xattr(fmt, ...)
+#endif 
 
 /* "Sanity" checks */
 void

fs/jffs2/dir.c

@@ -17,8 +17,8 @@
 #include <linux/fs.h>
 #include <linux/crc32.h>
 #include <linux/jffs2.h>
-#include <linux/jffs2_fs_i.h>
-#include <linux/jffs2_fs_sb.h>
+#include "jffs2_fs_i.h"
+#include "jffs2_fs_sb.h"
 #include <linux/time.h>
 #include "nodelist.h"
 
@@ -57,7 +57,12 @@ struct inode_operations jffs2_dir_inode_operations =
 	.rmdir =	jffs2_rmdir,
 	.mknod =	jffs2_mknod,
 	.rename =	jffs2_rename,
+	.permission =	jffs2_permission,
 	.setattr =	jffs2_setattr,
+	.setxattr =	jffs2_setxattr,
+	.getxattr =	jffs2_getxattr,
+	.listxattr =	jffs2_listxattr,
+	.removexattr =	jffs2_removexattr
 };
 
 /***********************************************************************/
@@ -78,6 +83,9 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
 
 	D1(printk(KERN_DEBUG "jffs2_lookup()\n"));
 
+	if (target->d_name.len > JFFS2_MAX_NAME_LEN)
+		return ERR_PTR(-ENAMETOOLONG);
+
 	dir_f = JFFS2_INODE_INFO(dir_i);
 	c = JFFS2_SB_INFO(dir_i->i_sb);
 
@@ -206,12 +214,15 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
 	ret = jffs2_do_create(c, dir_f, f, ri,
 			      dentry->d_name.name, dentry->d_name.len);
 
-	if (ret) {
-		make_bad_inode(inode);
-		iput(inode);
-		jffs2_free_raw_inode(ri);
-		return ret;
-	}
+	if (ret)
+		goto fail;
+
+	ret = jffs2_init_security(inode, dir_i);
+	if (ret)
+		goto fail;
+	ret = jffs2_init_acl(inode, dir_i);
+	if (ret)
+		goto fail;
 
 	dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime));
 
@@ -221,6 +232,12 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
 	D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
 		  inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages));
 	return 0;
+
+ fail:
+	make_bad_inode(inode);
+	iput(inode);
+	jffs2_free_raw_inode(ri);
+	return ret;
 }
 
 /***********************************************************************/
@@ -291,7 +308,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	struct jffs2_full_dnode *fn;
 	struct jffs2_full_dirent *fd;
 	int namelen;
-	uint32_t alloclen, phys_ofs;
+	uint32_t alloclen;
 	int ret, targetlen = strlen(target);
 
 	/* FIXME: If you care. We'd need to use frags for the target
@@ -310,8 +327,8 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	 * Just the node will do for now, though
 	 */
 	namelen = dentry->d_name.len;
-	ret = jffs2_reserve_space(c, sizeof(*ri) + targetlen, &phys_ofs, &alloclen,
-				ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+	ret = jffs2_reserve_space(c, sizeof(*ri) + targetlen, &alloclen,
+				  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 
 	if (ret) {
 		jffs2_free_raw_inode(ri);
@@ -339,7 +356,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	ri->data_crc = cpu_to_je32(crc32(0, target, targetlen));
 	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 
-	fn = jffs2_write_dnode(c, f, ri, target, targetlen, phys_ofs, ALLOC_NORMAL);
+	fn = jffs2_write_dnode(c, f, ri, target, targetlen, ALLOC_NORMAL);
 
 	jffs2_free_raw_inode(ri);
 
@@ -371,8 +388,20 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	up(&f->sem);
 
 	jffs2_complete_reservation(c);
-	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
-				ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+
+	ret = jffs2_init_security(inode, dir_i);
+	if (ret) {
+		jffs2_clear_inode(inode);
+		return ret;
+	}
+	ret = jffs2_init_acl(inode, dir_i);
+	if (ret) {
+		jffs2_clear_inode(inode);
+		return ret;
+	}
+
+	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
+				  ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 	if (ret) {
 		/* Eep. */
 		jffs2_clear_inode(inode);
@@ -404,7 +433,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 	rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
 	rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
 
-	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, ALLOC_NORMAL);
+	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
 
 	if (IS_ERR(fd)) {
 		/* dirent failed to write. Delete the inode normally
@@ -442,7 +471,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	struct jffs2_full_dnode *fn;
 	struct jffs2_full_dirent *fd;
 	int namelen;
-	uint32_t alloclen, phys_ofs;
+	uint32_t alloclen;
 	int ret;
 
 	mode |= S_IFDIR;
@@ -457,8 +486,8 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	 * Just the node will do for now, though
 	 */
 	namelen = dentry->d_name.len;
-	ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL,
-				JFFS2_SUMMARY_INODE_SIZE);
+	ret = jffs2_reserve_space(c, sizeof(*ri), &alloclen, ALLOC_NORMAL,
+				  JFFS2_SUMMARY_INODE_SIZE);
 
 	if (ret) {
 		jffs2_free_raw_inode(ri);
@@ -483,7 +512,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	ri->data_crc = cpu_to_je32(0);
 	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 
-	fn = jffs2_write_dnode(c, f, ri, NULL, 0, phys_ofs, ALLOC_NORMAL);
+	fn = jffs2_write_dnode(c, f, ri, NULL, 0, ALLOC_NORMAL);
 
 	jffs2_free_raw_inode(ri);
 
@@ -501,8 +530,20 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	up(&f->sem);
 
 	jffs2_complete_reservation(c);
-	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
-				ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+
+	ret = jffs2_init_security(inode, dir_i);
+	if (ret) {
+		jffs2_clear_inode(inode);
+		return ret;
+	}
+	ret = jffs2_init_acl(inode, dir_i);
+	if (ret) {
+		jffs2_clear_inode(inode);
+		return ret;
+	}
+
+	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
+				  ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 	if (ret) {
 		/* Eep. */
 		jffs2_clear_inode(inode);
@@ -534,7 +575,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 	rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
 	rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
 
-	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, ALLOC_NORMAL);
+	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
 
 	if (IS_ERR(fd)) {
 		/* dirent failed to write. Delete the inode normally
@@ -588,12 +629,12 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 	struct jffs2_full_dnode *fn;
 	struct jffs2_full_dirent *fd;
 	int namelen;
-	jint16_t dev;
+	union jffs2_device_node dev;
 	int devlen = 0;
-	uint32_t alloclen, phys_ofs;
+	uint32_t alloclen;
 	int ret;
 
-	if (!old_valid_dev(rdev))
+	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
 	ri = jffs2_alloc_raw_inode();
@@ -602,17 +643,15 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 
 	c = JFFS2_SB_INFO(dir_i->i_sb);
 
-	if (S_ISBLK(mode) || S_ISCHR(mode)) {
-		dev = cpu_to_je16(old_encode_dev(rdev));
-		devlen = sizeof(dev);
-	}
+	if (S_ISBLK(mode) || S_ISCHR(mode))
+		devlen = jffs2_encode_dev(&dev, rdev);
 
 	/* Try to reserve enough space for both node and dirent.
 	 * Just the node will do for now, though
 	 */
 	namelen = dentry->d_name.len;
-	ret = jffs2_reserve_space(c, sizeof(*ri) + devlen, &phys_ofs, &alloclen,
-				ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+	ret = jffs2_reserve_space(c, sizeof(*ri) + devlen, &alloclen,
+				  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 
 	if (ret) {
 		jffs2_free_raw_inode(ri);
@@ -639,7 +678,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 	ri->data_crc = cpu_to_je32(crc32(0, &dev, devlen));
 	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 
-	fn = jffs2_write_dnode(c, f, ri, (char *)&dev, devlen, phys_ofs, ALLOC_NORMAL);
+	fn = jffs2_write_dnode(c, f, ri, (char *)&dev, devlen, ALLOC_NORMAL);
 
 	jffs2_free_raw_inode(ri);
 
@@ -657,8 +696,20 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 	up(&f->sem);
 
 	jffs2_complete_reservation(c);
-	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
-				ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+
+	ret = jffs2_init_security(inode, dir_i);
+	if (ret) {
+		jffs2_clear_inode(inode);
+		return ret;
+	}
+	ret = jffs2_init_acl(inode, dir_i);
+	if (ret) {
+		jffs2_clear_inode(inode);
+		return ret;
+	}
+
+	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
+				  ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 	if (ret) {
 		/* Eep. */
 		jffs2_clear_inode(inode);
@@ -693,7 +744,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 	rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
 	rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
 
-	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, phys_ofs, ALLOC_NORMAL);
+	fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
 
 	if (IS_ERR(fd)) {
 		/* dirent failed to write. Delete the inode normally

fs/jffs2/erase.c

@@ -30,7 +30,6 @@ static void jffs2_erase_callback(struct erase_info *);
 #endif
 static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
 static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
-static void jffs2_free_all_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 
 static void jffs2_erase_block(struct jffs2_sb_info *c,
@@ -136,7 +135,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
 			c->used_size -= jeb->used_size;
 			c->dirty_size -= jeb->dirty_size;
 			jeb->wasted_size = jeb->used_size = jeb->dirty_size = jeb->free_size = 0;
-			jffs2_free_all_node_refs(c, jeb);
+			jffs2_free_jeb_node_refs(c, jeb);
 			list_add(&jeb->list, &c->erasing_list);
 			spin_unlock(&c->erase_completion_lock);
 
@@ -231,6 +230,7 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
 			   at the end of the linked list. Stash it and continue
 			   from the beginning of the list */
 			ic = (struct jffs2_inode_cache *)(*prev);
+			BUG_ON(ic->class != RAWNODE_CLASS_INODE_CACHE);
 			prev = &ic->nodes;
 			continue;
 		}
@@ -283,22 +283,27 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
 		jffs2_del_ino_cache(c, ic);
 }
 
-static void jffs2_free_all_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
-	struct jffs2_raw_node_ref *ref;
+	struct jffs2_raw_node_ref *block, *ref;
 	D1(printk(KERN_DEBUG "Freeing all node refs for eraseblock offset 0x%08x\n", jeb->offset));
-	while(jeb->first_node) {
-		ref = jeb->first_node;
-		jeb->first_node = ref->next_phys;
 
-		/* Remove from the inode-list */
-		if (ref->next_in_ino)
+	block = ref = jeb->first_node;
+
+	while (ref) {
+		if (ref->flash_offset == REF_LINK_NODE) {
+			ref = ref->next_in_ino;
+			jffs2_free_refblock(block);
+			block = ref;
+			continue;
+		}
+		if (ref->flash_offset != REF_EMPTY_NODE && ref->next_in_ino)
 			jffs2_remove_node_refs_from_ino_list(c, ref, jeb);
 		/* else it was a non-inode node or already removed, so don't bother */
 
-		jffs2_free_raw_node_ref(ref);
+		ref++;
 	}
-	jeb->last_node = NULL;
+	jeb->first_node = jeb->last_node = NULL;
 }
 
 static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t *bad_offset)
@@ -351,7 +356,6 @@ fail:
 
 static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
-	struct jffs2_raw_node_ref *marker_ref = NULL;
 	size_t retlen;
 	int ret;
 	uint32_t bad_offset;
@@ -373,12 +377,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
 				goto filebad;
 		}
 
-		jeb->first_node = jeb->last_node = NULL;
+		/* Everything else got zeroed before the erase */
 		jeb->free_size = c->sector_size;
-		jeb->used_size = 0;
-		jeb->dirty_size = 0;
-		jeb->wasted_size = 0;
-
 	} else {
 
 		struct kvec vecs[1];
@@ -388,11 +388,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
 			.totlen =	cpu_to_je32(c->cleanmarker_size)
 		};
 
-		marker_ref = jffs2_alloc_raw_node_ref();
-		if (!marker_ref) {
-			printk(KERN_WARNING "Failed to allocate raw node ref for clean marker. Refiling\n");
-			goto refile;
-		}
+		jffs2_prealloc_raw_node_refs(c, jeb, 1);
 
 		marker.hdr_crc = cpu_to_je32(crc32(0, &marker, sizeof(struct jffs2_unknown_node)-4));
 
@@ -408,21 +404,13 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
 				printk(KERN_WARNING "Short write to newly-erased block at 0x%08x: Wanted %zd, got %zd\n",
 				       jeb->offset, sizeof(marker), retlen);
 
-			jffs2_free_raw_node_ref(marker_ref);
 			goto filebad;
 		}
 
-		marker_ref->next_in_ino = NULL;
-		marker_ref->next_phys = NULL;
-		marker_ref->flash_offset = jeb->offset | REF_NORMAL;
-		marker_ref->__totlen = c->cleanmarker_size;
-
-		jeb->first_node = jeb->last_node = marker_ref;
-
-		jeb->free_size = c->sector_size - c->cleanmarker_size;
-		jeb->used_size = c->cleanmarker_size;
-		jeb->dirty_size = 0;
-		jeb->wasted_size = 0;
+		/* Everything else got zeroed before the erase */
+		jeb->free_size = c->sector_size;
+		/* FIXME Special case for cleanmarker in empty block */
+		jffs2_link_node_ref(c, jeb, jeb->offset | REF_NORMAL, c->cleanmarker_size, NULL);
 	}
 
 	spin_lock(&c->erase_completion_lock);

fs/jffs2/file.c

@@ -54,7 +54,12 @@ const struct file_operations jffs2_file_operations =
 
 struct inode_operations jffs2_file_inode_operations =
 {
-	.setattr =	jffs2_setattr
+	.permission =	jffs2_permission,
+	.setattr =	jffs2_setattr,
+	.setxattr =	jffs2_setxattr,
+	.getxattr =	jffs2_getxattr,
+	.listxattr =	jffs2_listxattr,
+	.removexattr =	jffs2_removexattr
 };
 
 struct address_space_operations jffs2_file_address_operations =
@@ -129,13 +134,13 @@ static int jffs2_prepare_write (struct file *filp, struct page *pg,
 		struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 		struct jffs2_raw_inode ri;
 		struct jffs2_full_dnode *fn;
-		uint32_t phys_ofs, alloc_len;
+		uint32_t alloc_len;
 
 		D1(printk(KERN_DEBUG "Writing new hole frag 0x%x-0x%x between current EOF and new page\n",
 			  (unsigned int)inode->i_size, pageofs));
 
-		ret = jffs2_reserve_space(c, sizeof(ri), &phys_ofs, &alloc_len,
-					ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+		ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
+					  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 		if (ret)
 			return ret;
 
@@ -161,7 +166,7 @@ static int jffs2_prepare_write (struct file *filp, struct page *pg,
 		ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
 		ri.data_crc = cpu_to_je32(0);
 
-		fn = jffs2_write_dnode(c, f, &ri, NULL, 0, phys_ofs, ALLOC_NORMAL);
+		fn = jffs2_write_dnode(c, f, &ri, NULL, 0, ALLOC_NORMAL);
 
 		if (IS_ERR(fn)) {
 			ret = PTR_ERR(fn);
@@ -215,12 +220,20 @@ static int jffs2_commit_write (struct file *filp, struct page *pg,
 	D1(printk(KERN_DEBUG "jffs2_commit_write(): ino #%lu, page at 0x%lx, range %d-%d, flags %lx\n",
 		  inode->i_ino, pg->index << PAGE_CACHE_SHIFT, start, end, pg->flags));
 
-	if (!start && end == PAGE_CACHE_SIZE) {
-		/* We need to avoid deadlock with page_cache_read() in
-		   jffs2_garbage_collect_pass(). So we have to mark the
-		   page up to date, to prevent page_cache_read() from
-		   trying to re-lock it. */
-		SetPageUptodate(pg);
+	if (end == PAGE_CACHE_SIZE) {
+		if (!start) {
+			/* We need to avoid deadlock with page_cache_read() in
+			   jffs2_garbage_collect_pass(). So we have to mark the
+			   page up to date, to prevent page_cache_read() from
+			   trying to re-lock it. */
+			SetPageUptodate(pg);
+		} else {
+			/* When writing out the end of a page, write out the 
+			   _whole_ page. This helps to reduce the number of
+			   nodes in files which have many short writes, like
+			   syslog files. */
+			start = aligned_start = 0;
+		}
 	}
 
 	ri = jffs2_alloc_raw_inode();

fs/jffs2/fs.c

@@ -33,11 +33,11 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
 	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 	struct jffs2_raw_inode *ri;
-	unsigned short dev;
+	union jffs2_device_node dev;
 	unsigned char *mdata = NULL;
 	int mdatalen = 0;
 	unsigned int ivalid;
-	uint32_t phys_ofs, alloclen;
+	uint32_t alloclen;
 	int ret;
 	D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino));
 	ret = inode_change_ok(inode, iattr);
@@ -51,20 +51,24 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 	   it out again with the appropriate data attached */
 	if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) {
 		/* For these, we don't actually need to read the old node */
-		dev = old_encode_dev(inode->i_rdev);
+		mdatalen = jffs2_encode_dev(&dev, inode->i_rdev);
 		mdata = (char *)&dev;
-		mdatalen = sizeof(dev);
 		D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of kdev_t\n", mdatalen));
 	} else if (S_ISLNK(inode->i_mode)) {
+		down(&f->sem);
 		mdatalen = f->metadata->size;
 		mdata = kmalloc(f->metadata->size, GFP_USER);
-		if (!mdata)
+		if (!mdata) {
+			up(&f->sem);
 			return -ENOMEM;
+		}
 		ret = jffs2_read_dnode(c, f, f->metadata, mdata, 0, mdatalen);
 		if (ret) {
+			up(&f->sem);
 			kfree(mdata);
 			return ret;
 		}
+		up(&f->sem);
 		D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of symlink target\n", mdatalen));
 	}
 
@@ -75,8 +79,8 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 		return -ENOMEM;
 	}
 
-	ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &phys_ofs, &alloclen,
-				ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+	ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &alloclen,
+				  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 	if (ret) {
 		jffs2_free_raw_inode(ri);
 		if (S_ISLNK(inode->i_mode & S_IFMT))
@@ -127,7 +131,7 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 	else
 		ri->data_crc = cpu_to_je32(0);
 
-	new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, phys_ofs, ALLOC_NORMAL);
+	new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, ALLOC_NORMAL);
 	if (S_ISLNK(inode->i_mode))
 		kfree(mdata);
 
@@ -180,7 +184,12 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 
 int jffs2_setattr(struct dentry *dentry, struct iattr *iattr)
 {
-	return jffs2_do_setattr(dentry->d_inode, iattr);
+	int rc;
+
+	rc = jffs2_do_setattr(dentry->d_inode, iattr);
+	if (!rc && (iattr->ia_valid & ATTR_MODE))
+		rc = jffs2_acl_chmod(dentry->d_inode);
+	return rc;
 }
 
 int jffs2_statfs(struct super_block *sb, struct kstatfs *buf)
@@ -219,6 +228,7 @@ void jffs2_clear_inode (struct inode *inode)
 
 	D1(printk(KERN_DEBUG "jffs2_clear_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode));
 
+	jffs2_xattr_delete_inode(c, f->inocache);
 	jffs2_do_clear_inode(c, f);
 }
 
@@ -227,6 +237,8 @@ void jffs2_read_inode (struct inode *inode)
 	struct jffs2_inode_info *f;
 	struct jffs2_sb_info *c;
 	struct jffs2_raw_inode latest_node;
+	union jffs2_device_node jdev;
+	dev_t rdev = 0;
 	int ret;
 
 	D1(printk(KERN_DEBUG "jffs2_read_inode(): inode->i_ino == %lu\n", inode->i_ino));
@@ -258,7 +270,6 @@ void jffs2_read_inode (struct inode *inode)
 	inode->i_blocks = (inode->i_size + 511) >> 9;
 
 	switch (inode->i_mode & S_IFMT) {
-		jint16_t rdev;
 
 	case S_IFLNK:
 		inode->i_op = &jffs2_symlink_inode_operations;
@@ -292,8 +303,16 @@ void jffs2_read_inode (struct inode *inode)
 	case S_IFBLK:
 	case S_IFCHR:
 		/* Read the device numbers from the media */
+		if (f->metadata->size != sizeof(jdev.old) &&
+		    f->metadata->size != sizeof(jdev.new)) {
+			printk(KERN_NOTICE "Device node has strange size %d\n", f->metadata->size);
+			up(&f->sem);
+			jffs2_do_clear_inode(c, f);
+			make_bad_inode(inode);
+			return;
+		}
 		D1(printk(KERN_DEBUG "Reading device numbers from flash\n"));
-		if (jffs2_read_dnode(c, f, f->metadata, (char *)&rdev, 0, sizeof(rdev)) < 0) {
+		if (jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size) < 0) {
 			/* Eep */
 			printk(KERN_NOTICE "Read device numbers for inode %lu failed\n", (unsigned long)inode->i_ino);
 			up(&f->sem);
@@ -301,12 +320,15 @@ void jffs2_read_inode (struct inode *inode)
 			make_bad_inode(inode);
 			return;
 		}
+		if (f->metadata->size == sizeof(jdev.old))
+			rdev = old_decode_dev(je16_to_cpu(jdev.old));
+		else
+			rdev = new_decode_dev(je32_to_cpu(jdev.new));
 
 	case S_IFSOCK:
 	case S_IFIFO:
 		inode->i_op = &jffs2_file_inode_operations;
-		init_special_inode(inode, inode->i_mode,
-				   old_decode_dev((je16_to_cpu(rdev))));
+		init_special_inode(inode, inode->i_mode, rdev);
 		break;
 
 	default:
@@ -492,6 +514,8 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 	}
 	memset(c->inocache_list, 0, INOCACHE_HASHSIZE * sizeof(struct jffs2_inode_cache *));
 
+	jffs2_init_xattr_subsystem(c);
+
 	if ((ret = jffs2_do_mount_fs(c)))
 		goto out_inohash;
 
@@ -526,6 +550,7 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 	else
 		kfree(c->blocks);
  out_inohash:
+	jffs2_clear_xattr_subsystem(c);
 	kfree(c->inocache_list);
  out_wbuf:
 	jffs2_flash_cleanup(c);
@@ -639,13 +664,6 @@ static int jffs2_flash_setup(struct jffs2_sb_info *c) {
 			return ret;
 	}
 
-	/* add setups for other bizarre flashes here... */
-	if (jffs2_nor_ecc(c)) {
-		ret = jffs2_nor_ecc_flash_setup(c);
-		if (ret)
-			return ret;
-	}
-
 	/* and Dataflash */
 	if (jffs2_dataflash(c)) {
 		ret = jffs2_dataflash_setup(c);
@@ -669,11 +687,6 @@ void jffs2_flash_cleanup(struct jffs2_sb_info *c) {
 		jffs2_nand_flash_cleanup(c);
 	}
 
-	/* add cleanups for other bizarre flashes here... */
-	if (jffs2_nor_ecc(c)) {
-		jffs2_nor_ecc_flash_cleanup(c);
-	}
-
 	/* and DataFlash */
 	if (jffs2_dataflash(c)) {
 		jffs2_dataflash_cleanup(c);

fs/jffs2/gc.c

@@ -125,6 +125,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 	struct jffs2_eraseblock *jeb;
 	struct jffs2_raw_node_ref *raw;
 	int ret = 0, inum, nlink;
+	int xattr = 0;
 
 	if (down_interruptible(&c->alloc_sem))
 		return -EINTR;
@@ -138,7 +139,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 		   the node CRCs etc. Do it now. */
 
 		/* checked_ino is protected by the alloc_sem */
-		if (c->checked_ino > c->highest_ino) {
+		if (c->checked_ino > c->highest_ino && xattr) {
 			printk(KERN_CRIT "Checked all inodes but still 0x%x bytes of unchecked space?\n",
 			       c->unchecked_size);
 			jffs2_dbg_dump_block_lists_nolock(c);
@@ -148,6 +149,9 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
 		spin_unlock(&c->erase_completion_lock);
 
+		if (!xattr)
+			xattr = jffs2_verify_xattr(c);
+
 		spin_lock(&c->inocache_lock);
 
 		ic = jffs2_get_ino_cache(c, c->checked_ino++);
@@ -181,6 +185,10 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 			   and trigger the BUG() above while we haven't yet
 			   finished checking all its nodes */
 			D1(printk(KERN_DEBUG "Waiting for ino #%u to finish reading\n", ic->ino));
+			/* We need to come back again for the _same_ inode. We've
+			 made no progress in this case, but that should be OK */
+			c->checked_ino--;
+
 			up(&c->alloc_sem);
 			sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
 			return 0;
@@ -231,7 +239,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
 	while(ref_obsolete(raw)) {
 		D1(printk(KERN_DEBUG "Node at 0x%08x is obsolete... skipping\n", ref_offset(raw)));
-		raw = raw->next_phys;
+		raw = ref_next(raw);
 		if (unlikely(!raw)) {
 			printk(KERN_WARNING "eep. End of raw list while still supposedly nodes to GC\n");
 			printk(KERN_WARNING "erase block at 0x%08x. free_size 0x%08x, dirty_size 0x%08x, used_size 0x%08x\n",
@@ -248,16 +256,37 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
 	if (!raw->next_in_ino) {
 		/* Inode-less node. Clean marker, snapshot or something like that */
-		/* FIXME: If it's something that needs to be copied, including something
-		   we don't grok that has JFFS2_NODETYPE_RWCOMPAT_COPY, we should do so */
 		spin_unlock(&c->erase_completion_lock);
-		jffs2_mark_node_obsolete(c, raw);
+		if (ref_flags(raw) == REF_PRISTINE) {
+			/* It's an unknown node with JFFS2_FEATURE_RWCOMPAT_COPY */
+			jffs2_garbage_collect_pristine(c, NULL, raw);
+		} else {
+			/* Just mark it obsolete */
+			jffs2_mark_node_obsolete(c, raw);
+		}
 		up(&c->alloc_sem);
 		goto eraseit_lock;
 	}
 
 	ic = jffs2_raw_ref_to_ic(raw);
 
+#ifdef CONFIG_JFFS2_FS_XATTR
+	/* When 'ic' refers xattr_datum/xattr_ref, this node is GCed as xattr.
+	 * We can decide whether this node is inode or xattr by ic->class.     */
+	if (ic->class == RAWNODE_CLASS_XATTR_DATUM
+	    || ic->class == RAWNODE_CLASS_XATTR_REF) {
+		BUG_ON(raw->next_in_ino != (void *)ic);
+		spin_unlock(&c->erase_completion_lock);
+
+		if (ic->class == RAWNODE_CLASS_XATTR_DATUM) {
+			ret = jffs2_garbage_collect_xattr_datum(c, (struct jffs2_xattr_datum *)ic);
+		} else {
+			ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic);
+		}
+		goto release_sem;
+	}
+#endif
+
 	/* We need to hold the inocache. Either the erase_completion_lock or
 	   the inocache_lock are sufficient; we trade down since the inocache_lock
 	   causes less contention. */
@@ -499,7 +528,6 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 					  struct jffs2_raw_node_ref *raw)
 {
 	union jffs2_node_union *node;
-	struct jffs2_raw_node_ref *nraw;
 	size_t retlen;
 	int ret;
 	uint32_t phys_ofs, alloclen;
@@ -508,15 +536,16 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 
 	D1(printk(KERN_DEBUG "Going to GC REF_PRISTINE node at 0x%08x\n", ref_offset(raw)));
 
-	rawlen = ref_totlen(c, c->gcblock, raw);
+	alloclen = rawlen = ref_totlen(c, c->gcblock, raw);
 
 	/* Ask for a small amount of space (or the totlen if smaller) because we
 	   don't want to force wastage of the end of a block if splitting would
 	   work. */
-	ret = jffs2_reserve_space_gc(c, min_t(uint32_t, sizeof(struct jffs2_raw_inode) +
-				JFFS2_MIN_DATA_LEN, rawlen), &phys_ofs, &alloclen, rawlen);
-				/* this is not the exact summary size of it,
-					it is only an upper estimation */
+	if (ic && alloclen > sizeof(struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN)
+		alloclen = sizeof(struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN;
+
+	ret = jffs2_reserve_space_gc(c, alloclen, &alloclen, rawlen);
+	/* 'rawlen' is not the exact summary size; it is only an upper estimation */
 
 	if (ret)
 		return ret;
@@ -580,22 +609,17 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 		}
 		break;
 	default:
-		printk(KERN_WARNING "Unknown node type for REF_PRISTINE node at 0x%08x: 0x%04x\n",
-		       ref_offset(raw), je16_to_cpu(node->u.nodetype));
-		goto bail;
-	}
-
-	nraw = jffs2_alloc_raw_node_ref();
-	if (!nraw) {
-		ret = -ENOMEM;
-		goto out_node;
+		/* If it's inode-less, we don't _know_ what it is. Just copy it intact */
+		if (ic) {
+			printk(KERN_WARNING "Unknown node type for REF_PRISTINE node at 0x%08x: 0x%04x\n",
+			       ref_offset(raw), je16_to_cpu(node->u.nodetype));
+			goto bail;
+		}
 	}
 
 	/* OK, all the CRCs are good; this node can just be copied as-is. */
  retry:
-	nraw->flash_offset = phys_ofs;
-	nraw->__totlen = rawlen;
-	nraw->next_phys = NULL;
+	phys_ofs = write_ofs(c);
 
 	ret = jffs2_flash_write(c, phys_ofs, rawlen, &retlen, (char *)node);
 
@@ -603,17 +627,11 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 		printk(KERN_NOTICE "Write of %d bytes at 0x%08x failed. returned %d, retlen %zd\n",
                        rawlen, phys_ofs, ret, retlen);
 		if (retlen) {
-                        /* Doesn't belong to any inode */
-			nraw->next_in_ino = NULL;
-
-			nraw->flash_offset |= REF_OBSOLETE;
-			jffs2_add_physical_node_ref(c, nraw);
-			jffs2_mark_node_obsolete(c, nraw);
+			jffs2_add_physical_node_ref(c, phys_ofs | REF_OBSOLETE, rawlen, NULL);
 		} else {
-			printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", nraw->flash_offset);
-                        jffs2_free_raw_node_ref(nraw);
+			printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", phys_ofs);
 		}
-		if (!retried && (nraw = jffs2_alloc_raw_node_ref())) {
+		if (!retried) {
 			/* Try to reallocate space and retry */
 			uint32_t dummy;
 			struct jffs2_eraseblock *jeb = &c->blocks[phys_ofs / c->sector_size];
@@ -625,7 +643,7 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 			jffs2_dbg_acct_sanity_check(c,jeb);
 			jffs2_dbg_acct_paranoia_check(c, jeb);
 
-			ret = jffs2_reserve_space_gc(c, rawlen, &phys_ofs, &dummy, rawlen);
+			ret = jffs2_reserve_space_gc(c, rawlen, &dummy, rawlen);
 						/* this is not the exact summary size of it,
 							it is only an upper estimation */
 
@@ -638,25 +656,13 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 				goto retry;
 			}
 			D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
-			jffs2_free_raw_node_ref(nraw);
 		}
 
-		jffs2_free_raw_node_ref(nraw);
 		if (!ret)
 			ret = -EIO;
 		goto out_node;
 	}
-	nraw->flash_offset |= REF_PRISTINE;
-	jffs2_add_physical_node_ref(c, nraw);
-
-	/* Link into per-inode list. This is safe because of the ic
-	   state being INO_STATE_GC. Note that if we're doing this
-	   for an inode which is in-core, the 'nraw' pointer is then
-	   going to be fetched from ic->nodes by our caller. */
-	spin_lock(&c->erase_completion_lock);
-        nraw->next_in_ino = ic->nodes;
-        ic->nodes = nraw;
-	spin_unlock(&c->erase_completion_lock);
+	jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, rawlen, ic);
 
 	jffs2_mark_node_obsolete(c, raw);
 	D1(printk(KERN_DEBUG "WHEEE! GC REF_PRISTINE node at 0x%08x succeeded\n", ref_offset(raw)));
@@ -675,19 +681,16 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
 	struct jffs2_full_dnode *new_fn;
 	struct jffs2_raw_inode ri;
 	struct jffs2_node_frag *last_frag;
-	jint16_t dev;
+	union jffs2_device_node dev;
 	char *mdata = NULL, mdatalen = 0;
-	uint32_t alloclen, phys_ofs, ilen;
+	uint32_t alloclen, ilen;
 	int ret;
 
 	if (S_ISBLK(JFFS2_F_I_MODE(f)) ||
 	    S_ISCHR(JFFS2_F_I_MODE(f)) ) {
 		/* For these, we don't actually need to read the old node */
-		/* FIXME: for minor or major > 255. */
-		dev = cpu_to_je16(((JFFS2_F_I_RDEV_MAJ(f) << 8) |
-			JFFS2_F_I_RDEV_MIN(f)));
+		mdatalen = jffs2_encode_dev(&dev, JFFS2_F_I_RDEV(f));
 		mdata = (char *)&dev;
-		mdatalen = sizeof(dev);
 		D1(printk(KERN_DEBUG "jffs2_garbage_collect_metadata(): Writing %d bytes of kdev_t\n", mdatalen));
 	} else if (S_ISLNK(JFFS2_F_I_MODE(f))) {
 		mdatalen = fn->size;
@@ -706,7 +709,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
 
 	}
 
-	ret = jffs2_reserve_space_gc(c, sizeof(ri) + mdatalen, &phys_ofs, &alloclen,
+	ret = jffs2_reserve_space_gc(c, sizeof(ri) + mdatalen, &alloclen,
 				JFFS2_SUMMARY_INODE_SIZE);
 	if (ret) {
 		printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_metadata failed: %d\n",
@@ -744,7 +747,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
 	ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
 	ri.data_crc = cpu_to_je32(crc32(0, mdata, mdatalen));
 
-	new_fn = jffs2_write_dnode(c, f, &ri, mdata, mdatalen, phys_ofs, ALLOC_GC);
+	new_fn = jffs2_write_dnode(c, f, &ri, mdata, mdatalen, ALLOC_GC);
 
 	if (IS_ERR(new_fn)) {
 		printk(KERN_WARNING "Error writing new dnode: %ld\n", PTR_ERR(new_fn));
@@ -765,7 +768,7 @@ static int jffs2_garbage_collect_dirent(struct jffs2_sb_info *c, struct jffs2_er
 {
 	struct jffs2_full_dirent *new_fd;
 	struct jffs2_raw_dirent rd;
-	uint32_t alloclen, phys_ofs;
+	uint32_t alloclen;
 	int ret;
 
 	rd.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -787,14 +790,14 @@ static int jffs2_garbage_collect_dirent(struct jffs2_sb_info *c, struct jffs2_er
 	rd.node_crc = cpu_to_je32(crc32(0, &rd, sizeof(rd)-8));
 	rd.name_crc = cpu_to_je32(crc32(0, fd->name, rd.nsize));
 
-	ret = jffs2_reserve_space_gc(c, sizeof(rd)+rd.nsize, &phys_ofs, &alloclen,
+	ret = jffs2_reserve_space_gc(c, sizeof(rd)+rd.nsize, &alloclen,
 				JFFS2_SUMMARY_DIRENT_SIZE(rd.nsize));
 	if (ret) {
 		printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_dirent failed: %d\n",
 		       sizeof(rd)+rd.nsize, ret);
 		return ret;
 	}
-	new_fd = jffs2_write_dirent(c, f, &rd, fd->name, rd.nsize, phys_ofs, ALLOC_GC);
+	new_fd = jffs2_write_dirent(c, f, &rd, fd->name, rd.nsize, ALLOC_GC);
 
 	if (IS_ERR(new_fd)) {
 		printk(KERN_WARNING "jffs2_write_dirent in garbage_collect_dirent failed: %ld\n", PTR_ERR(new_fd));
@@ -922,7 +925,7 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
 	struct jffs2_raw_inode ri;
 	struct jffs2_node_frag *frag;
 	struct jffs2_full_dnode *new_fn;
-	uint32_t alloclen, phys_ofs, ilen;
+	uint32_t alloclen, ilen;
 	int ret;
 
 	D1(printk(KERN_DEBUG "Writing replacement hole node for ino #%u from offset 0x%x to 0x%x\n",
@@ -1001,14 +1004,14 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
 	ri.data_crc = cpu_to_je32(0);
 	ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
 
-	ret = jffs2_reserve_space_gc(c, sizeof(ri), &phys_ofs, &alloclen,
-				JFFS2_SUMMARY_INODE_SIZE);
+	ret = jffs2_reserve_space_gc(c, sizeof(ri), &alloclen,
+				     JFFS2_SUMMARY_INODE_SIZE);
 	if (ret) {
 		printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_hole failed: %d\n",
 		       sizeof(ri), ret);
 		return ret;
 	}
-	new_fn = jffs2_write_dnode(c, f, &ri, NULL, 0, phys_ofs, ALLOC_GC);
+	new_fn = jffs2_write_dnode(c, f, &ri, NULL, 0, ALLOC_GC);
 
 	if (IS_ERR(new_fn)) {
 		printk(KERN_WARNING "Error writing new hole node: %ld\n", PTR_ERR(new_fn));
@@ -1070,7 +1073,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
 {
 	struct jffs2_full_dnode *new_fn;
 	struct jffs2_raw_inode ri;
-	uint32_t alloclen, phys_ofs, offset, orig_end, orig_start;
+	uint32_t alloclen, offset, orig_end, orig_start;
 	int ret = 0;
 	unsigned char *comprbuf = NULL, *writebuf;
 	unsigned long pg;
@@ -1227,7 +1230,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
 		uint32_t cdatalen;
 		uint16_t comprtype = JFFS2_COMPR_NONE;
 
-		ret = jffs2_reserve_space_gc(c, sizeof(ri) + JFFS2_MIN_DATA_LEN, &phys_ofs,
+		ret = jffs2_reserve_space_gc(c, sizeof(ri) + JFFS2_MIN_DATA_LEN,
 					&alloclen, JFFS2_SUMMARY_INODE_SIZE);
 
 		if (ret) {
@@ -1264,7 +1267,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
 		ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
 		ri.data_crc = cpu_to_je32(crc32(0, comprbuf, cdatalen));
 
-		new_fn = jffs2_write_dnode(c, f, &ri, comprbuf, cdatalen, phys_ofs, ALLOC_GC);
+		new_fn = jffs2_write_dnode(c, f, &ri, comprbuf, cdatalen, ALLOC_GC);
 
 		jffs2_free_comprbuf(comprbuf, writebuf);
 

fs/jffs2/histo.h

@@ -1,3 +0,0 @@
-/* This file provides the bit-probabilities for the input file */
-#define BIT_DIVIDER 629
-static int bits[9] = { 179,167,183,165,159,198,178,119,}; /* ia32 .so files */

include/linux/jffs2_fs_i.h → fs/jffs2/jffs2_fs_i.h

@@ -5,6 +5,7 @@
 
 #include <linux/version.h>
 #include <linux/rbtree.h>
+#include <linux/posix_acl.h>
 #include <asm/semaphore.h>
 
 struct jffs2_inode_info {
@@ -45,6 +46,10 @@ struct jffs2_inode_info {
 	struct inode vfs_inode;
 #endif
 #endif
+#ifdef CONFIG_JFFS2_FS_POSIX_ACL
+	struct posix_acl *i_acl_access;
+	struct posix_acl *i_acl_default;
+#endif
 };
 
 #endif /* _JFFS2_FS_I */

include/linux/jffs2_fs_sb.h → fs/jffs2/jffs2_fs_sb.h

@@ -100,6 +100,7 @@ struct jffs2_sb_info {
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 	/* Write-behind buffer for NAND flash */
 	unsigned char *wbuf;
+	unsigned char *oobbuf;
 	uint32_t wbuf_ofs;
 	uint32_t wbuf_len;
 	struct jffs2_inodirty *wbuf_inodes;
@@ -107,7 +108,7 @@ struct jffs2_sb_info {
 	struct rw_semaphore wbuf_sem;	/* Protects the write buffer */
 
 	/* Information about out-of-band area usage... */
-	struct nand_oobinfo *oobinfo;
+	struct nand_ecclayout *ecclayout;
 	uint32_t badblock_pos;
 	uint32_t fsdata_pos;
 	uint32_t fsdata_len;
@@ -115,6 +116,16 @@ struct jffs2_sb_info {
 
 	struct jffs2_summary *summary;		/* Summary information */
 
+#ifdef CONFIG_JFFS2_FS_XATTR
+#define XATTRINDEX_HASHSIZE	(57)
+	uint32_t highest_xid;
+	struct list_head xattrindex[XATTRINDEX_HASHSIZE];
+	struct list_head xattr_unchecked;
+	struct jffs2_xattr_ref *xref_temp;
+	struct rw_semaphore xattr_sem;
+	uint32_t xdatum_mem_usage;
+	uint32_t xdatum_mem_threshold;
+#endif
 	/* OS-private pointer for getting back to master superblock info */
 	void *os_priv;
 };

fs/jffs2/malloc.c

@@ -26,6 +26,10 @@ static kmem_cache_t *tmp_dnode_info_slab;
 static kmem_cache_t *raw_node_ref_slab;
 static kmem_cache_t *node_frag_slab;
 static kmem_cache_t *inode_cache_slab;
+#ifdef CONFIG_JFFS2_FS_XATTR
+static kmem_cache_t *xattr_datum_cache;
+static kmem_cache_t *xattr_ref_cache;
+#endif
 
 int __init jffs2_create_slab_caches(void)
 {
@@ -53,8 +57,8 @@ int __init jffs2_create_slab_caches(void)
 	if (!tmp_dnode_info_slab)
 		goto err;
 
-	raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref",
-					      sizeof(struct jffs2_raw_node_ref),
+	raw_node_ref_slab = kmem_cache_create("jffs2_refblock",
+					      sizeof(struct jffs2_raw_node_ref) * (REFS_PER_BLOCK + 1),
 					      0, 0, NULL, NULL);
 	if (!raw_node_ref_slab)
 		goto err;
@@ -68,8 +72,24 @@ int __init jffs2_create_slab_caches(void)
 	inode_cache_slab = kmem_cache_create("jffs2_inode_cache",
 					     sizeof(struct jffs2_inode_cache),
 					     0, 0, NULL, NULL);
-	if (inode_cache_slab)
-		return 0;
+	if (!inode_cache_slab)
+		goto err;
+
+#ifdef CONFIG_JFFS2_FS_XATTR
+	xattr_datum_cache = kmem_cache_create("jffs2_xattr_datum",
+					     sizeof(struct jffs2_xattr_datum),
+					     0, 0, NULL, NULL);
+	if (!xattr_datum_cache)
+		goto err;
+
+	xattr_ref_cache = kmem_cache_create("jffs2_xattr_ref",
+					   sizeof(struct jffs2_xattr_ref),
+					   0, 0, NULL, NULL);
+	if (!xattr_ref_cache)
+		goto err;
+#endif
+
+	return 0;
  err:
 	jffs2_destroy_slab_caches();
 	return -ENOMEM;
@@ -91,6 +111,12 @@ void jffs2_destroy_slab_caches(void)
 		kmem_cache_destroy(node_frag_slab);
 	if(inode_cache_slab)
 		kmem_cache_destroy(inode_cache_slab);
+#ifdef CONFIG_JFFS2_FS_XATTR
+	if (xattr_datum_cache)
+		kmem_cache_destroy(xattr_datum_cache);
+	if (xattr_ref_cache)
+		kmem_cache_destroy(xattr_ref_cache);
+#endif
 }
 
 struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
@@ -164,15 +190,65 @@ void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
 	kmem_cache_free(tmp_dnode_info_slab, x);
 }
 
-struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
+struct jffs2_raw_node_ref *jffs2_alloc_refblock(void)
 {
 	struct jffs2_raw_node_ref *ret;
+
 	ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
-	dbg_memalloc("%p\n", ret);
+	if (ret) {
+		int i = 0;
+		for (i=0; i < REFS_PER_BLOCK; i++) {
+			ret[i].flash_offset = REF_EMPTY_NODE;
+			ret[i].next_in_ino = NULL;
+		}
+		ret[i].flash_offset = REF_LINK_NODE;
+		ret[i].next_in_ino = NULL;
+	}
 	return ret;
 }
 
-void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
+int jffs2_prealloc_raw_node_refs(struct jffs2_sb_info *c,
+				 struct jffs2_eraseblock *jeb, int nr)
+{
+	struct jffs2_raw_node_ref **p, *ref;
+	int i = nr;
+
+	dbg_memalloc("%d\n", nr);
+
+	p = &jeb->last_node;
+	ref = *p;
+
+	dbg_memalloc("Reserving %d refs for block @0x%08x\n", nr, jeb->offset);
+
+	/* If jeb->last_node is really a valid node then skip over it */
+	if (ref && ref->flash_offset != REF_EMPTY_NODE)
+		ref++;
+
+	while (i) {
+		if (!ref) {
+			dbg_memalloc("Allocating new refblock linked from %p\n", p);
+			ref = *p = jffs2_alloc_refblock();
+			if (!ref)
+				return -ENOMEM;
+		}
+		if (ref->flash_offset == REF_LINK_NODE) {
+			p = &ref->next_in_ino;
+			ref = *p;
+			continue;
+		}
+		i--;
+		ref++;
+	}
+	jeb->allocated_refs = nr;
+
+	dbg_memalloc("Reserved %d refs for block @0x%08x, last_node is %p (%08x,%p)\n",
+		  nr, jeb->offset, jeb->last_node, jeb->last_node->flash_offset,
+		  jeb->last_node->next_in_ino);
+
+	return 0;
+}
+
+void jffs2_free_refblock(struct jffs2_raw_node_ref *x)
 {
 	dbg_memalloc("%p\n", x);
 	kmem_cache_free(raw_node_ref_slab, x);
@@ -205,3 +281,40 @@ void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
 	dbg_memalloc("%p\n", x);
 	kmem_cache_free(inode_cache_slab, x);
 }
+
+#ifdef CONFIG_JFFS2_FS_XATTR
+struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void)
+{
+	struct jffs2_xattr_datum *xd;
+	xd = kmem_cache_alloc(xattr_datum_cache, GFP_KERNEL);
+	dbg_memalloc("%p\n", xd);
+
+	memset(xd, 0, sizeof(struct jffs2_xattr_datum));
+	xd->class = RAWNODE_CLASS_XATTR_DATUM;
+	INIT_LIST_HEAD(&xd->xindex);
+	return xd;
+}
+
+void jffs2_free_xattr_datum(struct jffs2_xattr_datum *xd)
+{
+	dbg_memalloc("%p\n", xd);
+	kmem_cache_free(xattr_datum_cache, xd);
+}
+
+struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void)
+{
+	struct jffs2_xattr_ref *ref;
+	ref = kmem_cache_alloc(xattr_ref_cache, GFP_KERNEL);
+	dbg_memalloc("%p\n", ref);
+
+	memset(ref, 0, sizeof(struct jffs2_xattr_ref));
+	ref->class = RAWNODE_CLASS_XATTR_REF;
+	return ref;
+}
+
+void jffs2_free_xattr_ref(struct jffs2_xattr_ref *ref)
+{
+	dbg_memalloc("%p\n", ref);
+	kmem_cache_free(xattr_ref_cache, ref);
+}
+#endif

fs/jffs2/nodelist.c

@@ -438,8 +438,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
 	if (c->mtd->point) {
 		err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
 		if (!err && retlen < tn->csize) {
-			JFFS2_WARNING("MTD point returned len too short: %zu "
-					"instead of %u.\n", retlen, tn->csize);
+			JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
 			c->mtd->unpoint(c->mtd, buffer, ofs, len);
 		} else if (err)
 			JFFS2_WARNING("MTD point failed: error code %d.\n", err);
@@ -462,8 +461,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
 		}
 
 		if (retlen != len) {
-			JFFS2_ERROR("short read at %#08x: %zd instead of %d.\n",
-					ofs, retlen, len);
+			JFFS2_ERROR("short read at %#08x: %zd instead of %d.\n", ofs, retlen, len);
 			err = -EIO;
 			goto free_out;
 		}
@@ -940,6 +938,7 @@ void jffs2_free_ino_caches(struct jffs2_sb_info *c)
 		this = c->inocache_list[i];
 		while (this) {
 			next = this->next;
+			jffs2_xattr_free_inode(c, this);
 			jffs2_free_inode_cache(this);
 			this = next;
 		}
@@ -954,9 +953,13 @@ void jffs2_free_raw_node_refs(struct jffs2_sb_info *c)
 
 	for (i=0; i<c->nr_blocks; i++) {
 		this = c->blocks[i].first_node;
-		while(this) {
-			next = this->next_phys;
-			jffs2_free_raw_node_ref(this);
+		while (this) {
+			if (this[REFS_PER_BLOCK].flash_offset == REF_LINK_NODE)
+				next = this[REFS_PER_BLOCK].next_in_ino;
+			else
+				next = NULL;
+
+			jffs2_free_refblock(this);
 			this = next;
 		}
 		c->blocks[i].first_node = c->blocks[i].last_node = NULL;
@@ -1047,3 +1050,169 @@ void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c)
 		cond_resched();
 	}
 }
+
+struct jffs2_raw_node_ref *jffs2_link_node_ref(struct jffs2_sb_info *c,
+					       struct jffs2_eraseblock *jeb,
+					       uint32_t ofs, uint32_t len,
+					       struct jffs2_inode_cache *ic)
+{
+	struct jffs2_raw_node_ref *ref;
+
+	BUG_ON(!jeb->allocated_refs);
+	jeb->allocated_refs--;
+
+	ref = jeb->last_node;
+
+	dbg_noderef("Last node at %p is (%08x,%p)\n", ref, ref->flash_offset,
+		    ref->next_in_ino);
+
+	while (ref->flash_offset != REF_EMPTY_NODE) {
+		if (ref->flash_offset == REF_LINK_NODE)
+			ref = ref->next_in_ino;
+		else
+			ref++;
+	}
+
+	dbg_noderef("New ref is %p (%08x becomes %08x,%p) len 0x%x\n", ref, 
+		    ref->flash_offset, ofs, ref->next_in_ino, len);
+
+	ref->flash_offset = ofs;
+
+	if (!jeb->first_node) {
+		jeb->first_node = ref;
+		BUG_ON(ref_offset(ref) != jeb->offset);
+	} else if (unlikely(ref_offset(ref) != jeb->offset + c->sector_size - jeb->free_size)) {
+		uint32_t last_len = ref_totlen(c, jeb, jeb->last_node);
+
+		JFFS2_ERROR("Adding new ref %p at (0x%08x-0x%08x) not immediately after previous (0x%08x-0x%08x)\n",
+			    ref, ref_offset(ref), ref_offset(ref)+len,
+			    ref_offset(jeb->last_node), 
+			    ref_offset(jeb->last_node)+last_len);
+		BUG();
+	}
+	jeb->last_node = ref;
+
+	if (ic) {
+		ref->next_in_ino = ic->nodes;
+		ic->nodes = ref;
+	} else {
+		ref->next_in_ino = NULL;
+	}
+
+	switch(ref_flags(ref)) {
+	case REF_UNCHECKED:
+		c->unchecked_size += len;
+		jeb->unchecked_size += len;
+		break;
+
+	case REF_NORMAL:
+	case REF_PRISTINE:
+		c->used_size += len;
+		jeb->used_size += len;
+		break;
+
+	case REF_OBSOLETE:
+		c->dirty_size += len;
+		jeb->dirty_size += len;
+		break;
+	}
+	c->free_size -= len;
+	jeb->free_size -= len;
+
+#ifdef TEST_TOTLEN
+	/* Set (and test) __totlen field... for now */
+	ref->__totlen = len;
+	ref_totlen(c, jeb, ref);
+#endif
+	return ref;
+}
+
+/* No locking, no reservation of 'ref'. Do not use on a live file system */
+int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+			   uint32_t size)
+{
+	if (!size)
+		return 0;
+	if (unlikely(size > jeb->free_size)) {
+		printk(KERN_CRIT "Dirty space 0x%x larger then free_size 0x%x (wasted 0x%x)\n",
+		       size, jeb->free_size, jeb->wasted_size);
+		BUG();
+	}
+	/* REF_EMPTY_NODE is !obsolete, so that works OK */
+	if (jeb->last_node && ref_obsolete(jeb->last_node)) {
+#ifdef TEST_TOTLEN
+		jeb->last_node->__totlen += size;
+#endif
+		c->dirty_size += size;
+		c->free_size -= size;
+		jeb->dirty_size += size;
+		jeb->free_size -= size;
+	} else {
+		uint32_t ofs = jeb->offset + c->sector_size - jeb->free_size;
+		ofs |= REF_OBSOLETE;
+
+		jffs2_link_node_ref(c, jeb, ofs, size, NULL);
+	}
+
+	return 0;
+}
+
+/* Calculate totlen from surrounding nodes or eraseblock */
+static inline uint32_t __ref_totlen(struct jffs2_sb_info *c,
+				    struct jffs2_eraseblock *jeb,
+				    struct jffs2_raw_node_ref *ref)
+{
+	uint32_t ref_end;
+	struct jffs2_raw_node_ref *next_ref = ref_next(ref);
+
+	if (next_ref)
+		ref_end = ref_offset(next_ref);
+	else {
+		if (!jeb)
+			jeb = &c->blocks[ref->flash_offset / c->sector_size];
+
+		/* Last node in block. Use free_space */
+		if (unlikely(ref != jeb->last_node)) {
+			printk(KERN_CRIT "ref %p @0x%08x is not jeb->last_node (%p @0x%08x)\n",
+			       ref, ref_offset(ref), jeb->last_node, jeb->last_node?ref_offset(jeb->last_node):0);
+			BUG();
+		}
+		ref_end = jeb->offset + c->sector_size - jeb->free_size;
+	}
+	return ref_end - ref_offset(ref);
+}
+
+uint32_t __jffs2_ref_totlen(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+			    struct jffs2_raw_node_ref *ref)
+{
+	uint32_t ret;
+
+	ret = __ref_totlen(c, jeb, ref);
+
+#ifdef TEST_TOTLEN
+	if (unlikely(ret != ref->__totlen)) {
+		if (!jeb)
+			jeb = &c->blocks[ref->flash_offset / c->sector_size];
+
+		printk(KERN_CRIT "Totlen for ref at %p (0x%08x-0x%08x) miscalculated as 0x%x instead of %x\n",
+		       ref, ref_offset(ref), ref_offset(ref)+ref->__totlen,
+		       ret, ref->__totlen);
+		if (ref_next(ref)) {
+			printk(KERN_CRIT "next %p (0x%08x-0x%08x)\n", ref_next(ref), ref_offset(ref_next(ref)),
+			       ref_offset(ref_next(ref))+ref->__totlen);
+		} else 
+			printk(KERN_CRIT "No next ref. jeb->last_node is %p\n", jeb->last_node);
+
+		printk(KERN_CRIT "jeb->wasted_size %x, dirty_size %x, used_size %x, free_size %x\n", jeb->wasted_size, jeb->dirty_size, jeb->used_size, jeb->free_size);
+
+#if defined(JFFS2_DBG_DUMPS) || defined(JFFS2_DBG_PARANOIA_CHECKS)
+		__jffs2_dbg_dump_node_refs_nolock(c, jeb);
+#endif
+
+		WARN_ON(1);
+
+		ret = ref->__totlen;
+	}
+#endif /* TEST_TOTLEN */
+	return ret;
+}

fs/jffs2/nodelist.h

@@ -18,8 +18,10 @@
 #include <linux/fs.h>
 #include <linux/types.h>
 #include <linux/jffs2.h>
-#include <linux/jffs2_fs_sb.h>
-#include <linux/jffs2_fs_i.h>
+#include "jffs2_fs_sb.h"
+#include "jffs2_fs_i.h"
+#include "xattr.h"
+#include "acl.h"
 #include "summary.h"
 
 #ifdef __ECOS
@@ -75,14 +77,50 @@
 struct jffs2_raw_node_ref
 {
 	struct jffs2_raw_node_ref *next_in_ino; /* Points to the next raw_node_ref
-		for this inode. If this is the last, it points to the inode_cache
-		for this inode instead. The inode_cache will have NULL in the first
-		word so you know when you've got there :) */
-	struct jffs2_raw_node_ref *next_phys;
+		for this object. If this _is_ the last, it points to the inode_cache,
+		xattr_ref or xattr_datum instead. The common part of those structures
+		has NULL in the first word. See jffs2_raw_ref_to_ic() below */
 	uint32_t flash_offset;
+#define TEST_TOTLEN
+#ifdef TEST_TOTLEN
 	uint32_t __totlen; /* This may die; use ref_totlen(c, jeb, ) below */
+#endif
 };
 
+#define REF_LINK_NODE ((int32_t)-1)
+#define REF_EMPTY_NODE ((int32_t)-2)
+
+/* Use blocks of about 256 bytes */
+#define REFS_PER_BLOCK ((255/sizeof(struct jffs2_raw_node_ref))-1)
+
+static inline struct jffs2_raw_node_ref *ref_next(struct jffs2_raw_node_ref *ref)
+{
+	ref++;
+
+	/* Link to another block of refs */
+	if (ref->flash_offset == REF_LINK_NODE) {
+		ref = ref->next_in_ino;
+		if (!ref)
+			return ref;
+	}
+
+	/* End of chain */
+	if (ref->flash_offset == REF_EMPTY_NODE)
+		return NULL;
+
+	return ref;
+}
+
+static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw)
+{
+	while(raw->next_in_ino)
+		raw = raw->next_in_ino;
+
+	/* NB. This can be a jffs2_xattr_datum or jffs2_xattr_ref and
+	   not actually a jffs2_inode_cache. Check ->class */
+	return ((struct jffs2_inode_cache *)raw);
+}
+
         /* flash_offset & 3 always has to be zero, because nodes are
 	   always aligned at 4 bytes. So we have a couple of extra bits
 	   to play with, which indicate the node's status; see below: */
@@ -95,6 +133,11 @@ struct jffs2_raw_node_ref
 #define ref_obsolete(ref)	(((ref)->flash_offset & 3) == REF_OBSOLETE)
 #define mark_ref_normal(ref)    do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0)
 
+/* NB: REF_PRISTINE for an inode-less node (ref->next_in_ino == NULL) indicates
+   it is an unknown node of type JFFS2_NODETYPE_RWCOMPAT_COPY, so it'll get
+   copied. If you need to do anything different to GC inode-less nodes, then
+   you need to modify gc.c accordingly. */
+
 /* For each inode in the filesystem, we need to keep a record of
    nlink, because it would be a PITA to scan the whole directory tree
    at read_inode() time to calculate it, and to keep sufficient information
@@ -103,15 +146,27 @@ struct jffs2_raw_node_ref
    a pointer to the first physical node which is part of this inode, too.
 */
 struct jffs2_inode_cache {
+	/* First part of structure is shared with other objects which
+	   can terminate the raw node refs' next_in_ino list -- which
+	   currently struct jffs2_xattr_datum and struct jffs2_xattr_ref. */
+
 	struct jffs2_full_dirent *scan_dents; /* Used during scan to hold
 		temporary lists of dirents, and later must be set to
 		NULL to mark the end of the raw_node_ref->next_in_ino
 		chain. */
-	struct jffs2_inode_cache *next;
 	struct jffs2_raw_node_ref *nodes;
+	uint8_t class;	/* It's used for identification */
+
+	/* end of shared structure */
+
+	uint8_t flags;
+	uint16_t state;
 	uint32_t ino;
+	struct jffs2_inode_cache *next;
+#ifdef CONFIG_JFFS2_FS_XATTR
+	struct jffs2_xattr_ref *xref;
+#endif
 	int nlink;
-	int state;
 };
 
 /* Inode states for 'state' above. We need the 'GC' state to prevent
@@ -125,8 +180,16 @@ struct jffs2_inode_cache {
 #define INO_STATE_READING	5	/* In read_inode() */
 #define INO_STATE_CLEARING	6	/* In clear_inode() */
 
+#define INO_FLAGS_XATTR_CHECKED	0x01	/* has no duplicate xattr_ref */
+
+#define RAWNODE_CLASS_INODE_CACHE	0
+#define RAWNODE_CLASS_XATTR_DATUM	1
+#define RAWNODE_CLASS_XATTR_REF		2
+
 #define INOCACHE_HASHSIZE 128
 
+#define write_ofs(c) ((c)->nextblock->offset + (c)->sector_size - (c)->nextblock->free_size)
+
 /*
   Larger representation of a raw node, kept in-core only when the
   struct inode for this particular ino is instantiated.
@@ -192,6 +255,7 @@ struct jffs2_eraseblock
 	uint32_t wasted_size;
 	uint32_t free_size;	/* Note that sector_size - free_size
 				   is the address of the first free space */
+	uint32_t allocated_refs;
 	struct jffs2_raw_node_ref *first_node;
 	struct jffs2_raw_node_ref *last_node;
 
@@ -203,57 +267,7 @@ static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c)
 	return ((c->flash_size / c->sector_size) * sizeof (struct jffs2_eraseblock)) > (128 * 1024);
 }
 
-/* Calculate totlen from surrounding nodes or eraseblock */
-static inline uint32_t __ref_totlen(struct jffs2_sb_info *c,
-				    struct jffs2_eraseblock *jeb,
-				    struct jffs2_raw_node_ref *ref)
-{
-	uint32_t ref_end;
-
-	if (ref->next_phys)
-		ref_end = ref_offset(ref->next_phys);
-	else {
-		if (!jeb)
-			jeb = &c->blocks[ref->flash_offset / c->sector_size];
-
-		/* Last node in block. Use free_space */
-		BUG_ON(ref != jeb->last_node);
-		ref_end = jeb->offset + c->sector_size - jeb->free_size;
-	}
-	return ref_end - ref_offset(ref);
-}
-
-static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
-				  struct jffs2_eraseblock *jeb,
-				  struct jffs2_raw_node_ref *ref)
-{
-	uint32_t ret;
-
-#if CONFIG_JFFS2_FS_DEBUG > 0
-	if (jeb && jeb != &c->blocks[ref->flash_offset / c->sector_size]) {
-		printk(KERN_CRIT "ref_totlen called with wrong block -- at 0x%08x instead of 0x%08x; ref 0x%08x\n",
-		       jeb->offset, c->blocks[ref->flash_offset / c->sector_size].offset, ref_offset(ref));
-		BUG();
-	}
-#endif
-
-#if 1
-	ret = ref->__totlen;
-#else
-	/* This doesn't actually work yet */
-	ret = __ref_totlen(c, jeb, ref);
-	if (ret != ref->__totlen) {
-		printk(KERN_CRIT "Totlen for ref at %p (0x%08x-0x%08x) miscalculated as 0x%x instead of %x\n",
-		       ref, ref_offset(ref), ref_offset(ref)+ref->__totlen,
-		       ret, ref->__totlen);
-		if (!jeb)
-			jeb = &c->blocks[ref->flash_offset / c->sector_size];
-		jffs2_dbg_dump_node_refs_nolock(c, jeb);
-		BUG();
-	}
-#endif
-	return ret;
-}
+#define ref_totlen(a, b, c) __jffs2_ref_totlen((a), (b), (c))
 
 #define ALLOC_NORMAL	0	/* Normal allocation */
 #define ALLOC_DELETION	1	/* Deletion node. Best to allow it */
@@ -268,13 +282,15 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
 
 #define PAD(x) (((x)+3)&~3)
 
-static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw)
+static inline int jffs2_encode_dev(union jffs2_device_node *jdev, dev_t rdev)
 {
-	while(raw->next_in_ino) {
-		raw = raw->next_in_ino;
+	if (old_valid_dev(rdev)) {
+		jdev->old = cpu_to_je16(old_encode_dev(rdev));
+		return sizeof(jdev->old);
+	} else {
+		jdev->new = cpu_to_je32(new_encode_dev(rdev));
+		return sizeof(jdev->new);
 	}
-
-	return ((struct jffs2_inode_cache *)raw);
 }
 
 static inline struct jffs2_node_frag *frag_first(struct rb_root *root)
@@ -324,28 +340,44 @@ void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *t
 int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
 void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
 int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn);
+struct jffs2_raw_node_ref *jffs2_link_node_ref(struct jffs2_sb_info *c,
+					       struct jffs2_eraseblock *jeb,
+					       uint32_t ofs, uint32_t len,
+					       struct jffs2_inode_cache *ic);
+extern uint32_t __jffs2_ref_totlen(struct jffs2_sb_info *c,
+				   struct jffs2_eraseblock *jeb,
+				   struct jffs2_raw_node_ref *ref);
 
 /* nodemgmt.c */
 int jffs2_thread_should_wake(struct jffs2_sb_info *c);
-int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
 			uint32_t *len, int prio, uint32_t sumsize);
-int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize,
 			uint32_t *len, uint32_t sumsize);
-int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new);
+struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c, 
+						       uint32_t ofs, uint32_t len,
+						       struct jffs2_inode_cache *ic);
 void jffs2_complete_reservation(struct jffs2_sb_info *c);
 void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *raw);
 
 /* write.c */
 int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri);
 
-struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode);
-struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_dirent *rd, const unsigned char *name, uint32_t namelen, uint32_t flash_ofs, int alloc_mode);
+struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+					   struct jffs2_raw_inode *ri, const unsigned char *data,
+					   uint32_t datalen, int alloc_mode);
+struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+					     struct jffs2_raw_dirent *rd, const unsigned char *name,
+					     uint32_t namelen, int alloc_mode);
 int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 			    struct jffs2_raw_inode *ri, unsigned char *buf,
 			    uint32_t offset, uint32_t writelen, uint32_t *retlen);
-int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen);
-int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f, uint32_t time);
-int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time);
+int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f,
+		    struct jffs2_raw_inode *ri, const char *name, int namelen);
+int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name,
+		    int namelen, struct jffs2_inode_info *dead_f, uint32_t time);
+int jffs2_do_link(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino,
+		   uint8_t type, const char *name, int namelen, uint32_t time);
 
 
 /* readinode.c */
@@ -368,12 +400,19 @@ struct jffs2_raw_inode *jffs2_alloc_raw_inode(void);
 void jffs2_free_raw_inode(struct jffs2_raw_inode *);
 struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void);
 void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *);
-struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void);
-void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *);
+int jffs2_prealloc_raw_node_refs(struct jffs2_sb_info *c,
+				 struct jffs2_eraseblock *jeb, int nr);
+void jffs2_free_refblock(struct jffs2_raw_node_ref *);
 struct jffs2_node_frag *jffs2_alloc_node_frag(void);
 void jffs2_free_node_frag(struct jffs2_node_frag *);
 struct jffs2_inode_cache *jffs2_alloc_inode_cache(void);
 void jffs2_free_inode_cache(struct jffs2_inode_cache *);
+#ifdef CONFIG_JFFS2_FS_XATTR
+struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void);
+void jffs2_free_xattr_datum(struct jffs2_xattr_datum *);
+struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void);
+void jffs2_free_xattr_ref(struct jffs2_xattr_ref *);
+#endif
 
 /* gc.c */
 int jffs2_garbage_collect_pass(struct jffs2_sb_info *c);
@@ -393,12 +432,14 @@ int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf,
 				uint32_t ofs, uint32_t len);
 struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uint32_t ino);
 int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
+int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t size);
 
 /* build.c */
 int jffs2_do_mount_fs(struct jffs2_sb_info *c);
 
 /* erase.c */
 void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
+void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 /* wbuf.c */

fs/jffs2/nodemgmt.c

@@ -23,13 +23,12 @@
  *	jffs2_reserve_space - request physical space to write nodes to flash
  *	@c: superblock info
  *	@minsize: Minimum acceptable size of allocation
- *	@ofs: Returned value of node offset
  *	@len: Returned value of allocation length
  *	@prio: Allocation type - ALLOC_{NORMAL,DELETION}
  *
  *	Requests a block of physical space on the flash. Returns zero for success
- *	and puts 'ofs' and 'len' into the appriopriate place, or returns -ENOSPC
- *	or other error if appropriate.
+ *	and puts 'len' into the appropriate place, or returns -ENOSPC or other 
+ *	error if appropriate. Doesn't return len since that's 
  *
  *	If it returns zero, jffs2_reserve_space() also downs the per-filesystem
  *	allocation semaphore, to prevent more than one allocation from being
@@ -40,9 +39,9 @@
  */
 
 static int jffs2_do_reserve_space(struct jffs2_sb_info *c,  uint32_t minsize,
-					uint32_t *ofs, uint32_t *len, uint32_t sumsize);
+				  uint32_t *len, uint32_t sumsize);
 
-int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
 			uint32_t *len, int prio, uint32_t sumsize)
 {
 	int ret = -EAGAIN;
@@ -132,19 +131,21 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs
 			spin_lock(&c->erase_completion_lock);
 		}
 
-		ret = jffs2_do_reserve_space(c, minsize, ofs, len, sumsize);
+		ret = jffs2_do_reserve_space(c, minsize, len, sumsize);
 		if (ret) {
 			D1(printk(KERN_DEBUG "jffs2_reserve_space: ret is %d\n", ret));
 		}
 	}
 	spin_unlock(&c->erase_completion_lock);
+	if (!ret)
+		ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, 1);
 	if (ret)
 		up(&c->alloc_sem);
 	return ret;
 }
 
-int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
-			uint32_t *len, uint32_t sumsize)
+int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize,
+			   uint32_t *len, uint32_t sumsize)
 {
 	int ret = -EAGAIN;
 	minsize = PAD(minsize);
@@ -153,12 +154,15 @@ int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *
 
 	spin_lock(&c->erase_completion_lock);
 	while(ret == -EAGAIN) {
-		ret = jffs2_do_reserve_space(c, minsize, ofs, len, sumsize);
+		ret = jffs2_do_reserve_space(c, minsize, len, sumsize);
 		if (ret) {
 		        D1(printk(KERN_DEBUG "jffs2_reserve_space_gc: looping, ret is %d\n", ret));
 		}
 	}
 	spin_unlock(&c->erase_completion_lock);
+	if (!ret)
+		ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, 1);
+
 	return ret;
 }
 
@@ -259,10 +263,11 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
 }
 
 /* Called with alloc sem _and_ erase_completion_lock */
-static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs, uint32_t *len, uint32_t sumsize)
+static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
+				  uint32_t *len, uint32_t sumsize)
 {
 	struct jffs2_eraseblock *jeb = c->nextblock;
-	uint32_t reserved_size; 			/* for summary information at the end of the jeb */
+	uint32_t reserved_size;				/* for summary information at the end of the jeb */
 	int ret;
 
  restart:
@@ -312,6 +317,8 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uin
 		}
 	} else {
 		if (jeb && minsize > jeb->free_size) {
+			uint32_t waste;
+
 			/* Skip the end of this block and file it as having some dirty space */
 			/* If there's a pending write to it, flush now */
 
@@ -324,10 +331,26 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uin
 				goto restart;
 			}
 
-			c->wasted_size += jeb->free_size;
-			c->free_size -= jeb->free_size;
-			jeb->wasted_size += jeb->free_size;
-			jeb->free_size = 0;
+			spin_unlock(&c->erase_completion_lock);
+
+			ret = jffs2_prealloc_raw_node_refs(c, jeb, 1);
+			if (ret)
+				return ret;
+			/* Just lock it again and continue. Nothing much can change because
+			   we hold c->alloc_sem anyway. In fact, it's not entirely clear why
+			   we hold c->erase_completion_lock in the majority of this function...
+			   but that's a question for another (more caffeine-rich) day. */
+			spin_lock(&c->erase_completion_lock);
+
+			waste = jeb->free_size;
+			jffs2_link_node_ref(c, jeb,
+					    (jeb->offset + c->sector_size - waste) | REF_OBSOLETE,
+					    waste, NULL);
+			/* FIXME: that made it count as dirty. Convert to wasted */
+			jeb->dirty_size -= waste;
+			c->dirty_size -= waste;
+			jeb->wasted_size += waste;
+			c->wasted_size += waste;
 
 			jffs2_close_nextblock(c, jeb);
 			jeb = NULL;
@@ -349,7 +372,6 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uin
 	}
 	/* OK, jeb (==c->nextblock) is now pointing at a block which definitely has
 	   enough space */
-	*ofs = jeb->offset + (c->sector_size - jeb->free_size);
 	*len = jeb->free_size - reserved_size;
 
 	if (c->cleanmarker_size && jeb->used_size == c->cleanmarker_size &&
@@ -365,7 +387,8 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uin
 		spin_lock(&c->erase_completion_lock);
 	}
 
-	D1(printk(KERN_DEBUG "jffs2_do_reserve_space(): Giving 0x%x bytes at 0x%x\n", *len, *ofs));
+	D1(printk(KERN_DEBUG "jffs2_do_reserve_space(): Giving 0x%x bytes at 0x%x\n",
+		  *len, jeb->offset + (c->sector_size - jeb->free_size)));
 	return 0;
 }
 
@@ -374,7 +397,6 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uin
  *	@c: superblock info
  *	@new: new node reference to add
  *	@len: length of this physical node
- *	@dirty: dirty flag for new node
  *
  *	Should only be used to report nodes for which space has been allocated
  *	by jffs2_reserve_space.
@@ -382,42 +404,30 @@ static int jffs2_do_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uin
  *	Must be called with the alloc_sem held.
  */
 
-int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new)
+struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
+						       uint32_t ofs, uint32_t len,
+						       struct jffs2_inode_cache *ic)
 {
 	struct jffs2_eraseblock *jeb;
-	uint32_t len;
+	struct jffs2_raw_node_ref *new;
 
-	jeb = &c->blocks[new->flash_offset / c->sector_size];
-	len = ref_totlen(c, jeb, new);
+	jeb = &c->blocks[ofs / c->sector_size];
 
-	D1(printk(KERN_DEBUG "jffs2_add_physical_node_ref(): Node at 0x%x(%d), size 0x%x\n", ref_offset(new), ref_flags(new), len));
+	D1(printk(KERN_DEBUG "jffs2_add_physical_node_ref(): Node at 0x%x(%d), size 0x%x\n",
+		  ofs & ~3, ofs & 3, len));
 #if 1
-	/* we could get some obsolete nodes after nextblock was refiled
-	   in wbuf.c */
-	if ((c->nextblock || !ref_obsolete(new))
-	    &&(jeb != c->nextblock || ref_offset(new) != jeb->offset + (c->sector_size - jeb->free_size))) {
+	/* Allow non-obsolete nodes only to be added at the end of c->nextblock, 
+	   if c->nextblock is set. Note that wbuf.c will file obsolete nodes
+	   even after refiling c->nextblock */
+	if ((c->nextblock || ((ofs & 3) != REF_OBSOLETE))
+	    && (jeb != c->nextblock || (ofs & ~3) != jeb->offset + (c->sector_size - jeb->free_size))) {
 		printk(KERN_WARNING "argh. node added in wrong place\n");
-		jffs2_free_raw_node_ref(new);
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 #endif
 	spin_lock(&c->erase_completion_lock);
 
-	if (!jeb->first_node)
-		jeb->first_node = new;
-	if (jeb->last_node)
-		jeb->last_node->next_phys = new;
-	jeb->last_node = new;
-
-	jeb->free_size -= len;
-	c->free_size -= len;
-	if (ref_obsolete(new)) {
-		jeb->dirty_size += len;
-		c->dirty_size += len;
-	} else {
-		jeb->used_size += len;
-		c->used_size += len;
-	}
+	new = jffs2_link_node_ref(c, jeb, ofs, len, ic);
 
 	if (!jeb->free_size && !jeb->dirty_size && !ISDIRTY(jeb->wasted_size)) {
 		/* If it lives on the dirty_list, jffs2_reserve_space will put it there */
@@ -438,7 +448,7 @@ int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 
 	spin_unlock(&c->erase_completion_lock);
 
-	return 0;
+	return new;
 }
 
 
@@ -470,8 +480,9 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 	struct jffs2_unknown_node n;
 	int ret, addedsize;
 	size_t retlen;
+	uint32_t freed_len;
 
-	if(!ref) {
+	if(unlikely(!ref)) {
 		printk(KERN_NOTICE "EEEEEK. jffs2_mark_node_obsolete called with NULL node\n");
 		return;
 	}
@@ -499,32 +510,34 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 
 	spin_lock(&c->erase_completion_lock);
 
+	freed_len = ref_totlen(c, jeb, ref);
+
 	if (ref_flags(ref) == REF_UNCHECKED) {
-		D1(if (unlikely(jeb->unchecked_size < ref_totlen(c, jeb, ref))) {
+		D1(if (unlikely(jeb->unchecked_size < freed_len)) {
 			printk(KERN_NOTICE "raw unchecked node of size 0x%08x freed from erase block %d at 0x%08x, but unchecked_size was already 0x%08x\n",
-			       ref_totlen(c, jeb, ref), blocknr, ref->flash_offset, jeb->used_size);
+			       freed_len, blocknr, ref->flash_offset, jeb->used_size);
 			BUG();
 		})
-		D1(printk(KERN_DEBUG "Obsoleting previously unchecked node at 0x%08x of len %x: ", ref_offset(ref), ref_totlen(c, jeb, ref)));
-		jeb->unchecked_size -= ref_totlen(c, jeb, ref);
-		c->unchecked_size -= ref_totlen(c, jeb, ref);
+		D1(printk(KERN_DEBUG "Obsoleting previously unchecked node at 0x%08x of len %x: ", ref_offset(ref), freed_len));
+		jeb->unchecked_size -= freed_len;
+		c->unchecked_size -= freed_len;
 	} else {
-		D1(if (unlikely(jeb->used_size < ref_totlen(c, jeb, ref))) {
+		D1(if (unlikely(jeb->used_size < freed_len)) {
 			printk(KERN_NOTICE "raw node of size 0x%08x freed from erase block %d at 0x%08x, but used_size was already 0x%08x\n",
-			       ref_totlen(c, jeb, ref), blocknr, ref->flash_offset, jeb->used_size);
+			       freed_len, blocknr, ref->flash_offset, jeb->used_size);
 			BUG();
 		})
-		D1(printk(KERN_DEBUG "Obsoleting node at 0x%08x of len %#x: ", ref_offset(ref), ref_totlen(c, jeb, ref)));
-		jeb->used_size -= ref_totlen(c, jeb, ref);
-		c->used_size -= ref_totlen(c, jeb, ref);
+		D1(printk(KERN_DEBUG "Obsoleting node at 0x%08x of len %#x: ", ref_offset(ref), freed_len));
+		jeb->used_size -= freed_len;
+		c->used_size -= freed_len;
 	}
 
 	// Take care, that wasted size is taken into concern
-	if ((jeb->dirty_size || ISDIRTY(jeb->wasted_size + ref_totlen(c, jeb, ref))) && jeb != c->nextblock) {
-		D1(printk(KERN_DEBUG "Dirtying\n"));
-		addedsize = ref_totlen(c, jeb, ref);
-		jeb->dirty_size += ref_totlen(c, jeb, ref);
-		c->dirty_size += ref_totlen(c, jeb, ref);
+	if ((jeb->dirty_size || ISDIRTY(jeb->wasted_size + freed_len)) && jeb != c->nextblock) {
+		D1(printk("Dirtying\n"));
+		addedsize = freed_len;
+		jeb->dirty_size += freed_len;
+		c->dirty_size += freed_len;
 
 		/* Convert wasted space to dirty, if not a bad block */
 		if (jeb->wasted_size) {
@@ -543,10 +556,10 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 			}
 		}
 	} else {
-		D1(printk(KERN_DEBUG "Wasting\n"));
+		D1(printk("Wasting\n"));
 		addedsize = 0;
-		jeb->wasted_size += ref_totlen(c, jeb, ref);
-		c->wasted_size += ref_totlen(c, jeb, ref);
+		jeb->wasted_size += freed_len;
+		c->wasted_size += freed_len;
 	}
 	ref->flash_offset = ref_offset(ref) | REF_OBSOLETE;
 
@@ -622,7 +635,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 	/* The erase_free_sem is locked, and has been since before we marked the node obsolete
 	   and potentially put its eraseblock onto the erase_pending_list. Thus, we know that
 	   the block hasn't _already_ been erased, and that 'ref' itself hasn't been freed yet
-	   by jffs2_free_all_node_refs() in erase.c. Which is nice. */
+	   by jffs2_free_jeb_node_refs() in erase.c. Which is nice. */
 
 	D1(printk(KERN_DEBUG "obliterating obsoleted node at 0x%08x\n", ref_offset(ref)));
 	ret = jffs2_flash_read(c, ref_offset(ref), sizeof(n), &retlen, (char *)&n);
@@ -634,8 +647,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 		printk(KERN_WARNING "Short read from obsoleted node at 0x%08x: %zd\n", ref_offset(ref), retlen);
 		goto out_erase_sem;
 	}
-	if (PAD(je32_to_cpu(n.totlen)) != PAD(ref_totlen(c, jeb, ref))) {
-		printk(KERN_WARNING "Node totlen on flash (0x%08x) != totlen from node ref (0x%08x)\n", je32_to_cpu(n.totlen), ref_totlen(c, jeb, ref));
+	if (PAD(je32_to_cpu(n.totlen)) != PAD(freed_len)) {
+		printk(KERN_WARNING "Node totlen on flash (0x%08x) != totlen from node ref (0x%08x)\n", je32_to_cpu(n.totlen), freed_len);
 		goto out_erase_sem;
 	}
 	if (!(je16_to_cpu(n.nodetype) & JFFS2_NODE_ACCURATE)) {
@@ -671,6 +684,10 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 		spin_lock(&c->erase_completion_lock);
 
 		ic = jffs2_raw_ref_to_ic(ref);
+		/* It seems we should never call jffs2_mark_node_obsolete() for
+		   XATTR nodes.... yet. Make sure we notice if/when we change
+		   that :) */
+		BUG_ON(ic->class != RAWNODE_CLASS_INODE_CACHE);
 		for (p = &ic->nodes; (*p) != ref; p = &((*p)->next_in_ino))
 			;
 
@@ -683,51 +700,6 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 		spin_unlock(&c->erase_completion_lock);
 	}
 
-
-	/* Merge with the next node in the physical list, if there is one
-	   and if it's also obsolete and if it doesn't belong to any inode */
-	if (ref->next_phys && ref_obsolete(ref->next_phys) &&
-	    !ref->next_phys->next_in_ino) {
-		struct jffs2_raw_node_ref *n = ref->next_phys;
-
-		spin_lock(&c->erase_completion_lock);
-
-		ref->__totlen += n->__totlen;
-		ref->next_phys = n->next_phys;
-                if (jeb->last_node == n) jeb->last_node = ref;
-		if (jeb->gc_node == n) {
-			/* gc will be happy continuing gc on this node */
-			jeb->gc_node=ref;
-		}
-		spin_unlock(&c->erase_completion_lock);
-
-		jffs2_free_raw_node_ref(n);
-	}
-
-	/* Also merge with the previous node in the list, if there is one
-	   and that one is obsolete */
-	if (ref != jeb->first_node ) {
-		struct jffs2_raw_node_ref *p = jeb->first_node;
-
-		spin_lock(&c->erase_completion_lock);
-
-		while (p->next_phys != ref)
-			p = p->next_phys;
-
-		if (ref_obsolete(p) && !ref->next_in_ino) {
-			p->__totlen += ref->__totlen;
-			if (jeb->last_node == ref) {
-				jeb->last_node = p;
-			}
-			if (jeb->gc_node == ref) {
-				/* gc will be happy continuing gc on this node */
-				jeb->gc_node=p;
-			}
-			p->next_phys = ref->next_phys;
-			jffs2_free_raw_node_ref(ref);
-		}
-		spin_unlock(&c->erase_completion_lock);
-	}
  out_erase_sem:
 	up(&c->erase_free_sem);
 }

fs/jffs2/os-linux.h

@@ -31,9 +31,7 @@ struct kvec;
 #define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode)
 #define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid)
 #define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid)
-
-#define JFFS2_F_I_RDEV_MIN(f) (iminor(OFNI_EDONI_2SFFJ(f)))
-#define JFFS2_F_I_RDEV_MAJ(f) (imajor(OFNI_EDONI_2SFFJ(f)))
+#define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev)
 
 #define ITIME(sec) ((struct timespec){sec, 0})
 #define I_SEC(tv) ((tv).tv_sec)
@@ -60,6 +58,10 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 	f->target = NULL;
 	f->flags = 0;
 	f->usercompr = 0;
+#ifdef CONFIG_JFFS2_FS_POSIX_ACL
+	f->i_acl_access = JFFS2_ACL_NOT_CACHED;
+	f->i_acl_default = JFFS2_ACL_NOT_CACHED;
+#endif
 }
 
 
@@ -90,13 +92,10 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 #define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
 #define jffs2_wbuf_timeout NULL
 #define jffs2_wbuf_process NULL
-#define jffs2_nor_ecc(c) (0)
 #define jffs2_dataflash(c) (0)
-#define jffs2_nor_wbuf_flash(c) (0)
-#define jffs2_nor_ecc_flash_setup(c) (0)
-#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
 #define jffs2_dataflash_setup(c) (0)
 #define jffs2_dataflash_cleanup(c) do {} while (0)
+#define jffs2_nor_wbuf_flash(c) (0)
 #define jffs2_nor_wbuf_flash_setup(c) (0)
 #define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
 
@@ -107,9 +106,7 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 #ifdef CONFIG_JFFS2_SUMMARY
 #define jffs2_can_mark_obsolete(c) (0)
 #else
-#define jffs2_can_mark_obsolete(c) \
-  ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & (MTD_ECC|MTD_PROGRAM_REGIONS))) || \
-   c->mtd->type == MTD_RAM)
+#define jffs2_can_mark_obsolete(c) (c->mtd->flags & (MTD_BIT_WRITEABLE))
 #endif
 
 #define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
@@ -133,15 +130,11 @@ int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
 int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
 void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
 
-#define jffs2_nor_ecc(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_ECC))
-int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c);
-void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c);
-
 #define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
 int jffs2_dataflash_setup(struct jffs2_sb_info *c);
 void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
 
-#define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_PROGRAM_REGIONS))
+#define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && ! (c->mtd->flags & MTD_BIT_WRITEABLE))
 int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
 void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
 

fs/jffs2/readinode.c

@@ -116,19 +116,42 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 				uint32_t *latest_mctime, uint32_t *mctime_ver)
 {
 	struct jffs2_full_dirent *fd;
+	uint32_t crc;
 
-	/* The direntry nodes are checked during the flash scanning */
-	BUG_ON(ref_flags(ref) == REF_UNCHECKED);
 	/* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
 	BUG_ON(ref_obsolete(ref));
 
-	/* Sanity check */
-	if (unlikely(PAD((rd->nsize + sizeof(*rd))) != PAD(je32_to_cpu(rd->totlen)))) {
-		JFFS2_ERROR("illegal nsize in node at %#08x: nsize %#02x, totlen %#04x\n",
-		       ref_offset(ref), rd->nsize, je32_to_cpu(rd->totlen));
+	crc = crc32(0, rd, sizeof(*rd) - 8);
+	if (unlikely(crc != je32_to_cpu(rd->node_crc))) {
+		JFFS2_NOTICE("header CRC failed on dirent node at %#08x: read %#08x, calculated %#08x\n",
+			     ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
 		return 1;
 	}
 
+	/* If we've never checked the CRCs on this node, check them now */
+	if (ref_flags(ref) == REF_UNCHECKED) {
+		struct jffs2_eraseblock *jeb;
+		int len;
+
+		/* Sanity check */
+		if (unlikely(PAD((rd->nsize + sizeof(*rd))) != PAD(je32_to_cpu(rd->totlen)))) {
+			JFFS2_ERROR("illegal nsize in node at %#08x: nsize %#02x, totlen %#04x\n",
+				    ref_offset(ref), rd->nsize, je32_to_cpu(rd->totlen));
+			return 1;
+		}
+
+		jeb = &c->blocks[ref->flash_offset / c->sector_size];
+		len = ref_totlen(c, jeb, ref);
+
+		spin_lock(&c->erase_completion_lock);
+		jeb->used_size += len;
+		jeb->unchecked_size -= len;
+		c->used_size += len;
+		c->unchecked_size -= len;
+		ref->flash_offset = ref_offset(ref) | REF_PRISTINE;
+		spin_unlock(&c->erase_completion_lock);
+	}
+
 	fd = jffs2_alloc_full_dirent(rd->nsize + 1);
 	if (unlikely(!fd))
 		return -ENOMEM;
@@ -198,13 +221,21 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 	struct jffs2_tmp_dnode_info *tn;
 	uint32_t len, csize;
 	int ret = 1;
+	uint32_t crc;
 
 	/* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
 	BUG_ON(ref_obsolete(ref));
 
+	crc = crc32(0, rd, sizeof(*rd) - 8);
+	if (unlikely(crc != je32_to_cpu(rd->node_crc))) {
+		JFFS2_NOTICE("node CRC failed on dnode at %#08x: read %#08x, calculated %#08x\n",
+			     ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
+		return 1;
+	}
+
 	tn = jffs2_alloc_tmp_dnode_info();
 	if (!tn) {
-		JFFS2_ERROR("failed to allocate tn (%d bytes).\n", sizeof(*tn));
+		JFFS2_ERROR("failed to allocate tn (%zu bytes).\n", sizeof(*tn));
 		return -ENOMEM;
 	}
 
@@ -213,14 +244,6 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 
 	/* If we've never checked the CRCs on this node, check them now */
 	if (ref_flags(ref) == REF_UNCHECKED) {
-		uint32_t crc;
-
-		crc = crc32(0, rd, sizeof(*rd) - 8);
-		if (unlikely(crc != je32_to_cpu(rd->node_crc))) {
-			JFFS2_NOTICE("header CRC failed on node at %#08x: read %#08x, calculated %#08x\n",
-					ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
-			goto free_out;
-		}
 
 		/* Sanity checks */
 		if (unlikely(je32_to_cpu(rd->offset) > je32_to_cpu(rd->isize)) ||
@@ -343,7 +366,7 @@ free_out:
  * Helper function for jffs2_get_inode_nodes().
  * It is called every time an unknown node is found.
  *
- * Returns: 0 on succes;
+ * Returns: 0 on success;
  * 	    1 if the node should be marked obsolete;
  * 	    negative error code on failure.
  */
@@ -354,37 +377,30 @@ static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_re
 
 	un->nodetype = cpu_to_je16(JFFS2_NODE_ACCURATE | je16_to_cpu(un->nodetype));
 
-	if (crc32(0, un, sizeof(struct jffs2_unknown_node) - 4) != je32_to_cpu(un->hdr_crc)) {
-		/* Hmmm. This should have been caught at scan time. */
-		JFFS2_NOTICE("node header CRC failed at %#08x. But it must have been OK earlier.\n", ref_offset(ref));
-		jffs2_dbg_dump_node(c, ref_offset(ref));
-		return 1;
-	} else {
-		switch(je16_to_cpu(un->nodetype) & JFFS2_COMPAT_MASK) {
+	switch(je16_to_cpu(un->nodetype) & JFFS2_COMPAT_MASK) {
 
-		case JFFS2_FEATURE_INCOMPAT:
-			JFFS2_ERROR("unknown INCOMPAT nodetype %#04X at %#08x\n",
-				je16_to_cpu(un->nodetype), ref_offset(ref));
-			/* EEP */
-			BUG();
-			break;
+	case JFFS2_FEATURE_INCOMPAT:
+		JFFS2_ERROR("unknown INCOMPAT nodetype %#04X at %#08x\n",
+			    je16_to_cpu(un->nodetype), ref_offset(ref));
+		/* EEP */
+		BUG();
+		break;
 
-		case JFFS2_FEATURE_ROCOMPAT:
-			JFFS2_ERROR("unknown ROCOMPAT nodetype %#04X at %#08x\n",
-					je16_to_cpu(un->nodetype), ref_offset(ref));
-			BUG_ON(!(c->flags & JFFS2_SB_FLAG_RO));
-			break;
+	case JFFS2_FEATURE_ROCOMPAT:
+		JFFS2_ERROR("unknown ROCOMPAT nodetype %#04X at %#08x\n",
+			    je16_to_cpu(un->nodetype), ref_offset(ref));
+		BUG_ON(!(c->flags & JFFS2_SB_FLAG_RO));
+		break;
 
-		case JFFS2_FEATURE_RWCOMPAT_COPY:
-			JFFS2_NOTICE("unknown RWCOMPAT_COPY nodetype %#04X at %#08x\n",
-					je16_to_cpu(un->nodetype), ref_offset(ref));
-			break;
+	case JFFS2_FEATURE_RWCOMPAT_COPY:
+		JFFS2_NOTICE("unknown RWCOMPAT_COPY nodetype %#04X at %#08x\n",
+			     je16_to_cpu(un->nodetype), ref_offset(ref));
+		break;
 
-		case JFFS2_FEATURE_RWCOMPAT_DELETE:
-			JFFS2_NOTICE("unknown RWCOMPAT_DELETE nodetype %#04X at %#08x\n",
-					je16_to_cpu(un->nodetype), ref_offset(ref));
-			return 1;
-		}
+	case JFFS2_FEATURE_RWCOMPAT_DELETE:
+		JFFS2_NOTICE("unknown RWCOMPAT_DELETE nodetype %#04X at %#08x\n",
+			     je16_to_cpu(un->nodetype), ref_offset(ref));
+		return 1;
 	}
 
 	return 0;
@@ -434,7 +450,7 @@ static int read_more(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
 	}
 
 	if (retlen < len) {
-		JFFS2_ERROR("short read at %#08x: %d instead of %d.\n",
+		JFFS2_ERROR("short read at %#08x: %zu instead of %d.\n",
 				offs, retlen, len);
 		return -EIO;
 	}
@@ -542,13 +558,25 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 		}
 
 		if (retlen < len) {
-			JFFS2_ERROR("short read at %#08x: %d instead of %d.\n", ref_offset(ref), retlen, len);
+			JFFS2_ERROR("short read at %#08x: %zu instead of %d.\n", ref_offset(ref), retlen, len);
 			err = -EIO;
 			goto free_out;
 		}
 
 		node = (union jffs2_node_union *)bufstart;
 
+		/* No need to mask in the valid bit; it shouldn't be invalid */
+		if (je32_to_cpu(node->u.hdr_crc) != crc32(0, node, sizeof(node->u)-4)) {
+			JFFS2_NOTICE("Node header CRC failed at %#08x. {%04x,%04x,%08x,%08x}\n",
+				     ref_offset(ref), je16_to_cpu(node->u.magic),
+				     je16_to_cpu(node->u.nodetype),
+				     je32_to_cpu(node->u.totlen),
+				     je32_to_cpu(node->u.hdr_crc));
+			jffs2_dbg_dump_node(c, ref_offset(ref));
+			jffs2_mark_node_obsolete(c, ref);
+			goto cont;
+		}
+
 		switch (je16_to_cpu(node->u.nodetype)) {
 
 		case JFFS2_NODETYPE_DIRENT:
@@ -606,6 +634,7 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 				goto free_out;
 
 		}
+	cont:
 		spin_lock(&c->erase_completion_lock);
 	}
 

fs/jffs2/scan.c

@@ -65,6 +65,28 @@ static inline uint32_t EMPTY_SCAN_SIZE(uint32_t sector_size) {
 		return DEFAULT_EMPTY_SCAN_SIZE;
 }
 
+static int file_dirty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+{
+	int ret;
+
+	if ((ret = jffs2_prealloc_raw_node_refs(c, jeb, 1)))
+		return ret;
+	if ((ret = jffs2_scan_dirty_space(c, jeb, jeb->free_size)))
+		return ret;
+	/* Turned wasted size into dirty, since we apparently 
+	   think it's recoverable now. */
+	jeb->dirty_size += jeb->wasted_size;
+	c->dirty_size += jeb->wasted_size;
+	c->wasted_size -= jeb->wasted_size;
+	jeb->wasted_size = 0;
+	if (VERYDIRTY(c, jeb->dirty_size)) {
+		list_add(&jeb->list, &c->very_dirty_list);
+	} else {
+		list_add(&jeb->list, &c->dirty_list);
+	}
+	return 0;
+}
+
 int jffs2_scan_medium(struct jffs2_sb_info *c)
 {
 	int i, ret;
@@ -170,34 +192,20 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 					(!c->nextblock || c->nextblock->free_size < jeb->free_size)) {
 				/* Better candidate for the next writes to go to */
 				if (c->nextblock) {
-					c->nextblock->dirty_size += c->nextblock->free_size + c->nextblock->wasted_size;
-					c->dirty_size += c->nextblock->free_size + c->nextblock->wasted_size;
-					c->free_size -= c->nextblock->free_size;
-					c->wasted_size -= c->nextblock->wasted_size;
-					c->nextblock->free_size = c->nextblock->wasted_size = 0;
-					if (VERYDIRTY(c, c->nextblock->dirty_size)) {
-						list_add(&c->nextblock->list, &c->very_dirty_list);
-					} else {
-						list_add(&c->nextblock->list, &c->dirty_list);
-					}
+					ret = file_dirty(c, c->nextblock);
+					if (ret)
+						return ret;
 					/* deleting summary information of the old nextblock */
 					jffs2_sum_reset_collected(c->summary);
 				}
-				/* update collected summary infromation for the current nextblock */
+				/* update collected summary information for the current nextblock */
 				jffs2_sum_move_collected(c, s);
 				D1(printk(KERN_DEBUG "jffs2_scan_medium(): new nextblock = 0x%08x\n", jeb->offset));
 				c->nextblock = jeb;
 			} else {
-				jeb->dirty_size += jeb->free_size + jeb->wasted_size;
-				c->dirty_size += jeb->free_size + jeb->wasted_size;
-				c->free_size -= jeb->free_size;
-				c->wasted_size -= jeb->wasted_size;
-				jeb->free_size = jeb->wasted_size = 0;
-				if (VERYDIRTY(c, jeb->dirty_size)) {
-					list_add(&jeb->list, &c->very_dirty_list);
-				} else {
-					list_add(&jeb->list, &c->dirty_list);
-				}
+				ret = file_dirty(c, jeb);
+				if (ret)
+					return ret;
 			}
 			break;
 
@@ -222,9 +230,6 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 		}
 	}
 
-	if (jffs2_sum_active() && s)
-		kfree(s);
-
 	/* Nextblock dirty is always seen as wasted, because we cannot recycle it now */
 	if (c->nextblock && (c->nextblock->dirty_size)) {
 		c->nextblock->wasted_size += c->nextblock->dirty_size;
@@ -242,11 +247,8 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 
 		D1(printk(KERN_DEBUG "jffs2_scan_medium(): Skipping %d bytes in nextblock to ensure page alignment\n",
 			  skip));
-		c->nextblock->wasted_size += skip;
-		c->wasted_size += skip;
-
-		c->nextblock->free_size -= skip;
-		c->free_size -= skip;
+		jffs2_prealloc_raw_node_refs(c, c->nextblock, 1);
+		jffs2_scan_dirty_space(c, c->nextblock, skip);
 	}
 #endif
 	if (c->nr_erasing_blocks) {
@@ -266,6 +268,9 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 	else
 		c->mtd->unpoint(c->mtd, flashbuf, 0, c->mtd->size);
 #endif
+	if (s)
+		kfree(s);
+
 	return ret;
 }
 
@@ -290,7 +295,7 @@ int jffs2_fill_scan_buf (struct jffs2_sb_info *c, void *buf,
 int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
 	if ((jeb->used_size + jeb->unchecked_size) == PAD(c->cleanmarker_size) && !jeb->dirty_size
-		&& (!jeb->first_node || !jeb->first_node->next_phys) )
+	    && (!jeb->first_node || !ref_next(jeb->first_node)) )
 		return BLK_STATE_CLEANMARKER;
 
 	/* move blocks with max 4 byte dirty space to cleanlist */
@@ -306,11 +311,119 @@ int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *je
 		return BLK_STATE_ALLDIRTY;
 }
 
+#ifdef CONFIG_JFFS2_FS_XATTR
+static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+				 struct jffs2_raw_xattr *rx, uint32_t ofs,
+				 struct jffs2_summary *s)
+{
+	struct jffs2_xattr_datum *xd;
+	uint32_t totlen, crc;
+	int err;
+
+	crc = crc32(0, rx, sizeof(struct jffs2_raw_xattr) - 4);
+	if (crc != je32_to_cpu(rx->node_crc)) {
+		if (je32_to_cpu(rx->node_crc) != 0xffffffff)
+			JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
+				      ofs, je32_to_cpu(rx->node_crc), crc);
+		if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen))))
+			return err;
+		return 0;
+	}
+
+	totlen = PAD(sizeof(*rx) + rx->name_len + 1 + je16_to_cpu(rx->value_len));
+	if (totlen != je32_to_cpu(rx->totlen)) {
+		JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n",
+			      ofs, je32_to_cpu(rx->totlen), totlen);
+		if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen))))
+			return err;
+		return 0;
+	}
+
+	xd = jffs2_setup_xattr_datum(c, je32_to_cpu(rx->xid), je32_to_cpu(rx->version));
+	if (IS_ERR(xd)) {
+		if (PTR_ERR(xd) == -EEXIST) {
+			if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rx->totlen)))))
+				return err;
+			return 0;
+		}
+		return PTR_ERR(xd);
+	}
+	xd->xprefix = rx->xprefix;
+	xd->name_len = rx->name_len;
+	xd->value_len = je16_to_cpu(rx->value_len);
+	xd->data_crc = je32_to_cpu(rx->data_crc);
+
+	xd->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, NULL);
+	/* FIXME */ xd->node->next_in_ino = (void *)xd;
+
+	if (jffs2_sum_active())
+		jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset);
+	dbg_xattr("scaning xdatum at %#08x (xid=%u, version=%u)\n",
+		  ofs, xd->xid, xd->version);
+	return 0;
+}
+
+static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+				struct jffs2_raw_xref *rr, uint32_t ofs,
+				struct jffs2_summary *s)
+{
+	struct jffs2_xattr_ref *ref;
+	uint32_t crc;
+	int err;
+
+	crc = crc32(0, rr, sizeof(*rr) - 4);
+	if (crc != je32_to_cpu(rr->node_crc)) {
+		if (je32_to_cpu(rr->node_crc) != 0xffffffff)
+			JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
+				      ofs, je32_to_cpu(rr->node_crc), crc);
+		if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rr->totlen)))))
+			return err;
+		return 0;
+	}
+
+	if (PAD(sizeof(struct jffs2_raw_xref)) != je32_to_cpu(rr->totlen)) {
+		JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%zd\n",
+			      ofs, je32_to_cpu(rr->totlen),
+			      PAD(sizeof(struct jffs2_raw_xref)));
+		if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rr->totlen))))
+			return err;
+		return 0;
+	}
+
+	ref = jffs2_alloc_xattr_ref();
+	if (!ref)
+		return -ENOMEM;
+
+	/* BEFORE jffs2_build_xattr_subsystem() called, 
+	 * ref->xid is used to store 32bit xid, xd is not used
+	 * ref->ino is used to store 32bit inode-number, ic is not used
+	 * Thoes variables are declared as union, thus using those
+	 * are exclusive. In a similar way, ref->next is temporarily
+	 * used to chain all xattr_ref object. It's re-chained to
+	 * jffs2_inode_cache in jffs2_build_xattr_subsystem() correctly.
+	 */
+	ref->ino = je32_to_cpu(rr->ino);
+	ref->xid = je32_to_cpu(rr->xid);
+	ref->next = c->xref_temp;
+	c->xref_temp = ref;
+
+	ref->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rr->totlen)), NULL);
+	/* FIXME */ ref->node->next_in_ino = (void *)ref;
+
+	if (jffs2_sum_active())
+		jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset);
+	dbg_xattr("scan xref at %#08x (xid=%u, ino=%u)\n",
+		  ofs, ref->xid, ref->ino);
+	return 0;
+}
+#endif
+
+/* Called with 'buf_size == 0' if buf is in fact a pointer _directly_ into
+   the flash, XIP-style */
 static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
-				unsigned char *buf, uint32_t buf_size, struct jffs2_summary *s) {
+				  unsigned char *buf, uint32_t buf_size, struct jffs2_summary *s) {
 	struct jffs2_unknown_node *node;
 	struct jffs2_unknown_node crcnode;
-	struct jffs2_sum_marker *sm;
 	uint32_t ofs, prevofs;
 	uint32_t hdr_crc, buf_ofs, buf_len;
 	int err;
@@ -344,44 +457,75 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 #endif
 
 	if (jffs2_sum_active()) {
-		sm = kmalloc(sizeof(struct jffs2_sum_marker), GFP_KERNEL);
-		if (!sm) {
-			return -ENOMEM;
-		}
-
-		err = jffs2_fill_scan_buf(c, (unsigned char *) sm, jeb->offset + c->sector_size -
-					sizeof(struct jffs2_sum_marker), sizeof(struct jffs2_sum_marker));
-		if (err) {
-			kfree(sm);
-			return err;
-		}
-
-		if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC ) {
-			err = jffs2_sum_scan_sumnode(c, jeb, je32_to_cpu(sm->offset), &pseudo_random);
-			if (err) {
-				kfree(sm);
+		struct jffs2_sum_marker *sm;
+		void *sumptr = NULL;
+		uint32_t sumlen;
+	      
+		if (!buf_size) {
+			/* XIP case. Just look, point at the summary if it's there */
+			sm = (void *)buf + c->sector_size - sizeof(*sm);
+			if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
+				sumptr = buf + je32_to_cpu(sm->offset);
+				sumlen = c->sector_size - je32_to_cpu(sm->offset);
+			}
+		} else {
+			/* If NAND flash, read a whole page of it. Else just the end */
+			if (c->wbuf_pagesize)
+				buf_len = c->wbuf_pagesize;
+			else
+				buf_len = sizeof(*sm);
+
+			/* Read as much as we want into the _end_ of the preallocated buffer */
+			err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len, 
+						  jeb->offset + c->sector_size - buf_len,
+						  buf_len);				
+			if (err)
 				return err;
+
+			sm = (void *)buf + buf_size - sizeof(*sm);
+			if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
+				sumlen = c->sector_size - je32_to_cpu(sm->offset);
+				sumptr = buf + buf_size - sumlen;
+
+				/* Now, make sure the summary itself is available */
+				if (sumlen > buf_size) {
+					/* Need to kmalloc for this. */
+					sumptr = kmalloc(sumlen, GFP_KERNEL);
+					if (!sumptr)
+						return -ENOMEM;
+					memcpy(sumptr + sumlen - buf_len, buf + buf_size - buf_len, buf_len);
+				}
+				if (buf_len < sumlen) {
+					/* Need to read more so that the entire summary node is present */
+					err = jffs2_fill_scan_buf(c, sumptr, 
+								  jeb->offset + c->sector_size - sumlen,
+								  sumlen - buf_len);				
+					if (err)
+						return err;
+				}
 			}
+
 		}
 
-		kfree(sm);
+		if (sumptr) {
+			err = jffs2_sum_scan_sumnode(c, jeb, sumptr, sumlen, &pseudo_random);
 
-		ofs = jeb->offset;
-		prevofs = jeb->offset - 1;
+			if (buf_size && sumlen > buf_size)
+				kfree(sumptr);
+			/* If it returns with a real error, bail. 
+			   If it returns positive, that's a block classification
+			   (i.e. BLK_STATE_xxx) so return that too.
+			   If it returns zero, fall through to full scan. */
+			if (err)
+				return err;
+		}
 	}
 
 	buf_ofs = jeb->offset;
 
 	if (!buf_size) {
+		/* This is the XIP case -- we're reading _directly_ from the flash chip */
 		buf_len = c->sector_size;
-
-		if (jffs2_sum_active()) {
-			/* must reread because of summary test */
-			err = jffs2_fill_scan_buf(c, buf, buf_ofs, buf_len);
-			if (err)
-				return err;
-		}
-
 	} else {
 		buf_len = EMPTY_SCAN_SIZE(c->sector_size);
 		err = jffs2_fill_scan_buf(c, buf, buf_ofs, buf_len);
@@ -418,7 +562,10 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 	if (ofs) {
 		D1(printk(KERN_DEBUG "Free space at %08x ends at %08x\n", jeb->offset,
 			  jeb->offset + ofs));
-		DIRTY_SPACE(ofs);
+		if ((err = jffs2_prealloc_raw_node_refs(c, jeb, 1)))
+			return err;
+		if ((err = jffs2_scan_dirty_space(c, jeb, ofs)))
+			return err;
 	}
 
 	/* Now ofs is a complete physical flash offset as it always was... */
@@ -433,6 +580,11 @@ scan_more:
 
 		jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
 
+		/* Make sure there are node refs available for use */
+		err = jffs2_prealloc_raw_node_refs(c, jeb, 2);
+		if (err)
+			return err;
+
 		cond_resched();
 
 		if (ofs & 3) {
@@ -442,7 +594,8 @@ scan_more:
 		}
 		if (ofs == prevofs) {
 			printk(KERN_WARNING "ofs 0x%08x has already been seen. Skipping\n", ofs);
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
@@ -451,7 +604,8 @@ scan_more:
 		if (jeb->offset + c->sector_size < ofs + sizeof(*node)) {
 			D1(printk(KERN_DEBUG "Fewer than %zd bytes left to end of block. (%x+%x<%x+%zx) Not reading\n", sizeof(struct jffs2_unknown_node),
 				  jeb->offset, c->sector_size, ofs, sizeof(*node)));
-			DIRTY_SPACE((jeb->offset + c->sector_size)-ofs);
+			if ((err = jffs2_scan_dirty_space(c, jeb, (jeb->offset + c->sector_size)-ofs)))
+				return err;
 			break;
 		}
 
@@ -481,7 +635,8 @@ scan_more:
 				if (*(uint32_t *)(&buf[inbuf_ofs]) != 0xffffffff) {
 					printk(KERN_WARNING "Empty flash at 0x%08x ends at 0x%08x\n",
 					       empty_start, ofs);
-					DIRTY_SPACE(ofs-empty_start);
+					if ((err = jffs2_scan_dirty_space(c, jeb, ofs-empty_start)))
+						return err;
 					goto scan_more;
 				}
 
@@ -494,7 +649,7 @@ scan_more:
 			/* If we're only checking the beginning of a block with a cleanmarker,
 			   bail now */
 			if (buf_ofs == jeb->offset && jeb->used_size == PAD(c->cleanmarker_size) &&
-			    c->cleanmarker_size && !jeb->dirty_size && !jeb->first_node->next_phys) {
+			    c->cleanmarker_size && !jeb->dirty_size && !ref_next(jeb->first_node)) {
 				D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE(c->sector_size)));
 				return BLK_STATE_CLEANMARKER;
 			}
@@ -518,20 +673,23 @@ scan_more:
 
 		if (ofs == jeb->offset && je16_to_cpu(node->magic) == KSAMTIB_CIGAM_2SFFJ) {
 			printk(KERN_WARNING "Magic bitmask is backwards at offset 0x%08x. Wrong endian filesystem?\n", ofs);
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
 		if (je16_to_cpu(node->magic) == JFFS2_DIRTY_BITMASK) {
 			D1(printk(KERN_DEBUG "Dirty bitmask at 0x%08x\n", ofs));
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
 		if (je16_to_cpu(node->magic) == JFFS2_OLD_MAGIC_BITMASK) {
 			printk(KERN_WARNING "Old JFFS2 bitmask found at 0x%08x\n", ofs);
 			printk(KERN_WARNING "You cannot use older JFFS2 filesystems with newer kernels\n");
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
@@ -540,7 +698,8 @@ scan_more:
 			noisy_printk(&noise, "jffs2_scan_eraseblock(): Magic bitmask 0x%04x not found at 0x%08x: 0x%04x instead\n",
 				     JFFS2_MAGIC_BITMASK, ofs,
 				     je16_to_cpu(node->magic));
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
@@ -557,7 +716,8 @@ scan_more:
 				     je32_to_cpu(node->totlen),
 				     je32_to_cpu(node->hdr_crc),
 				     hdr_crc);
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
@@ -568,7 +728,8 @@ scan_more:
 			printk(KERN_WARNING "Node at 0x%08x with length 0x%08x would run over the end of the erase block\n",
 			       ofs, je32_to_cpu(node->totlen));
 			printk(KERN_WARNING "Perhaps the file system was created with the wrong erase size?\n");
-			DIRTY_SPACE(4);
+			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
+				return err;
 			ofs += 4;
 			continue;
 		}
@@ -576,7 +737,8 @@ scan_more:
 		if (!(je16_to_cpu(node->nodetype) & JFFS2_NODE_ACCURATE)) {
 			/* Wheee. This is an obsoleted node */
 			D2(printk(KERN_DEBUG "Node at 0x%08x is obsolete. Skipping\n", ofs));
-			DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+			if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+				return err;
 			ofs += PAD(je32_to_cpu(node->totlen));
 			continue;
 		}
@@ -614,30 +776,59 @@ scan_more:
 			ofs += PAD(je32_to_cpu(node->totlen));
 			break;
 
+#ifdef CONFIG_JFFS2_FS_XATTR
+		case JFFS2_NODETYPE_XATTR:
+			if (buf_ofs + buf_len < ofs + je32_to_cpu(node->totlen)) {
+				buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
+				D1(printk(KERN_DEBUG "Fewer than %d bytes (xattr node)"
+					  " left to end of buf. Reading 0x%x at 0x%08x\n",
+					  je32_to_cpu(node->totlen), buf_len, ofs));
+				err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
+				if (err)
+					return err;
+				buf_ofs = ofs;
+				node = (void *)buf;
+			}
+			err = jffs2_scan_xattr_node(c, jeb, (void *)node, ofs, s);
+			if (err)
+				return err;
+			ofs += PAD(je32_to_cpu(node->totlen));
+			break;
+		case JFFS2_NODETYPE_XREF:
+			if (buf_ofs + buf_len < ofs + je32_to_cpu(node->totlen)) {
+				buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
+				D1(printk(KERN_DEBUG "Fewer than %d bytes (xref node)"
+					  " left to end of buf. Reading 0x%x at 0x%08x\n",
+					  je32_to_cpu(node->totlen), buf_len, ofs));
+				err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
+				if (err)
+					return err;
+				buf_ofs = ofs;
+				node = (void *)buf;
+			}
+			err = jffs2_scan_xref_node(c, jeb, (void *)node, ofs, s);
+			if (err)
+				return err;
+			ofs += PAD(je32_to_cpu(node->totlen));
+			break;
+#endif	/* CONFIG_JFFS2_FS_XATTR */
+
 		case JFFS2_NODETYPE_CLEANMARKER:
 			D1(printk(KERN_DEBUG "CLEANMARKER node found at 0x%08x\n", ofs));
 			if (je32_to_cpu(node->totlen) != c->cleanmarker_size) {
 				printk(KERN_NOTICE "CLEANMARKER node found at 0x%08x has totlen 0x%x != normal 0x%x\n",
 				       ofs, je32_to_cpu(node->totlen), c->cleanmarker_size);
-				DIRTY_SPACE(PAD(sizeof(struct jffs2_unknown_node)));
+				if ((err = jffs2_scan_dirty_space(c, jeb, PAD(sizeof(struct jffs2_unknown_node)))))
+					return err;
 				ofs += PAD(sizeof(struct jffs2_unknown_node));
 			} else if (jeb->first_node) {
 				printk(KERN_NOTICE "CLEANMARKER node found at 0x%08x, not first node in block (0x%08x)\n", ofs, jeb->offset);
-				DIRTY_SPACE(PAD(sizeof(struct jffs2_unknown_node)));
+				if ((err = jffs2_scan_dirty_space(c, jeb, PAD(sizeof(struct jffs2_unknown_node)))))
+					return err;
 				ofs += PAD(sizeof(struct jffs2_unknown_node));
 			} else {
-				struct jffs2_raw_node_ref *marker_ref = jffs2_alloc_raw_node_ref();
-				if (!marker_ref) {
-					printk(KERN_NOTICE "Failed to allocate node ref for clean marker\n");
-					return -ENOMEM;
-				}
-				marker_ref->next_in_ino = NULL;
-				marker_ref->next_phys = NULL;
-				marker_ref->flash_offset = ofs | REF_NORMAL;
-				marker_ref->__totlen = c->cleanmarker_size;
-				jeb->first_node = jeb->last_node = marker_ref;
+				jffs2_link_node_ref(c, jeb, ofs | REF_NORMAL, c->cleanmarker_size, NULL);
 
-				USED_SPACE(PAD(c->cleanmarker_size));
 				ofs += PAD(c->cleanmarker_size);
 			}
 			break;
@@ -645,7 +836,8 @@ scan_more:
 		case JFFS2_NODETYPE_PADDING:
 			if (jffs2_sum_active())
 				jffs2_sum_add_padding_mem(s, je32_to_cpu(node->totlen));
-			DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+			if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+				return err;
 			ofs += PAD(je32_to_cpu(node->totlen));
 			break;
 
@@ -656,7 +848,8 @@ scan_more:
 			        c->flags |= JFFS2_SB_FLAG_RO;
 				if (!(jffs2_is_readonly(c)))
 					return -EROFS;
-				DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+				if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+					return err;
 				ofs += PAD(je32_to_cpu(node->totlen));
 				break;
 
@@ -666,15 +859,21 @@ scan_more:
 
 			case JFFS2_FEATURE_RWCOMPAT_DELETE:
 				D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
-				DIRTY_SPACE(PAD(je32_to_cpu(node->totlen)));
+				if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen)))))
+					return err;
 				ofs += PAD(je32_to_cpu(node->totlen));
 				break;
 
-			case JFFS2_FEATURE_RWCOMPAT_COPY:
+			case JFFS2_FEATURE_RWCOMPAT_COPY: {
 				D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
-				USED_SPACE(PAD(je32_to_cpu(node->totlen)));
+
+				jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(node->totlen)), NULL);
+
+				/* We can't summarise nodes we don't grok */
+				jffs2_sum_disable_collecting(s);
 				ofs += PAD(je32_to_cpu(node->totlen));
 				break;
+				}
 			}
 		}
 	}
@@ -687,9 +886,9 @@ scan_more:
 		}
 	}
 
-	D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x\n", jeb->offset,
-		  jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size));
-
+	D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
+		  jeb->offset,jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size, jeb->wasted_size));
+	
 	/* mark_node_obsolete can add to wasted !! */
 	if (jeb->wasted_size) {
 		jeb->dirty_size += jeb->wasted_size;
@@ -730,9 +929,9 @@ struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uin
 static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
 				 struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
 {
-	struct jffs2_raw_node_ref *raw;
 	struct jffs2_inode_cache *ic;
 	uint32_t ino = je32_to_cpu(ri->ino);
+	int err;
 
 	D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
 
@@ -745,12 +944,6 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 	   Which means that the _full_ amount of time to get to proper write mode with GC
 	   operational may actually be _longer_ than before. Sucks to be me. */
 
-	raw = jffs2_alloc_raw_node_ref();
-	if (!raw) {
-		printk(KERN_NOTICE "jffs2_scan_inode_node(): allocation of node reference failed\n");
-		return -ENOMEM;
-	}
-
 	ic = jffs2_get_ino_cache(c, ino);
 	if (!ic) {
 		/* Inocache get failed. Either we read a bogus ino# or it's just genuinely the
@@ -762,30 +955,17 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 			printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
 			       ofs, je32_to_cpu(ri->node_crc), crc);
 			/* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
-			DIRTY_SPACE(PAD(je32_to_cpu(ri->totlen)));
-			jffs2_free_raw_node_ref(raw);
+			if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(ri->totlen)))))
+				return err;
 			return 0;
 		}
 		ic = jffs2_scan_make_ino_cache(c, ino);
-		if (!ic) {
-			jffs2_free_raw_node_ref(raw);
+		if (!ic)
 			return -ENOMEM;
-		}
 	}
 
 	/* Wheee. It worked */
-
-	raw->flash_offset = ofs | REF_UNCHECKED;
-	raw->__totlen = PAD(je32_to_cpu(ri->totlen));
-	raw->next_phys = NULL;
-	raw->next_in_ino = ic->nodes;
-
-	ic->nodes = raw;
-	if (!jeb->first_node)
-		jeb->first_node = raw;
-	if (jeb->last_node)
-		jeb->last_node->next_phys = raw;
-	jeb->last_node = raw;
+	jffs2_link_node_ref(c, jeb, ofs | REF_UNCHECKED, PAD(je32_to_cpu(ri->totlen)), ic);
 
 	D1(printk(KERN_DEBUG "Node is ino #%u, version %d. Range 0x%x-0x%x\n",
 		  je32_to_cpu(ri->ino), je32_to_cpu(ri->version),
@@ -794,8 +974,6 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 
 	pseudo_random += je32_to_cpu(ri->version);
 
-	UNCHECKED_SPACE(PAD(je32_to_cpu(ri->totlen)));
-
 	if (jffs2_sum_active()) {
 		jffs2_sum_add_inode_mem(s, ri, ofs - jeb->offset);
 	}
@@ -806,10 +984,10 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
 				  struct jffs2_raw_dirent *rd, uint32_t ofs, struct jffs2_summary *s)
 {
-	struct jffs2_raw_node_ref *raw;
 	struct jffs2_full_dirent *fd;
 	struct jffs2_inode_cache *ic;
 	uint32_t crc;
+	int err;
 
 	D1(printk(KERN_DEBUG "jffs2_scan_dirent_node(): Node at 0x%08x\n", ofs));
 
@@ -821,7 +999,8 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
 		printk(KERN_NOTICE "jffs2_scan_dirent_node(): Node CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
 		       ofs, je32_to_cpu(rd->node_crc), crc);
 		/* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
-		DIRTY_SPACE(PAD(je32_to_cpu(rd->totlen)));
+		if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rd->totlen)))))
+			return err;
 		return 0;
 	}
 
@@ -842,40 +1021,23 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
 		jffs2_free_full_dirent(fd);
 		/* FIXME: Why do we believe totlen? */
 		/* We believe totlen because the CRC on the node _header_ was OK, just the name failed. */
-		DIRTY_SPACE(PAD(je32_to_cpu(rd->totlen)));
+		if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rd->totlen)))))
+			return err;
 		return 0;
 	}
-	raw = jffs2_alloc_raw_node_ref();
-	if (!raw) {
-		jffs2_free_full_dirent(fd);
-		printk(KERN_NOTICE "jffs2_scan_dirent_node(): allocation of node reference failed\n");
-		return -ENOMEM;
-	}
 	ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(rd->pino));
 	if (!ic) {
 		jffs2_free_full_dirent(fd);
-		jffs2_free_raw_node_ref(raw);
 		return -ENOMEM;
 	}
 
-	raw->__totlen = PAD(je32_to_cpu(rd->totlen));
-	raw->flash_offset = ofs | REF_PRISTINE;
-	raw->next_phys = NULL;
-	raw->next_in_ino = ic->nodes;
-	ic->nodes = raw;
-	if (!jeb->first_node)
-		jeb->first_node = raw;
-	if (jeb->last_node)
-		jeb->last_node->next_phys = raw;
-	jeb->last_node = raw;
+	fd->raw = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rd->totlen)), ic);
 
-	fd->raw = raw;
 	fd->next = NULL;
 	fd->version = je32_to_cpu(rd->version);
 	fd->ino = je32_to_cpu(rd->ino);
 	fd->nhash = full_name_hash(fd->name, rd->nsize);
 	fd->type = rd->type;
-	USED_SPACE(PAD(je32_to_cpu(rd->totlen)));
 	jffs2_add_fd_to_list(c, fd, &ic->scan_dents);
 
 	if (jffs2_sum_active()) {

fs/jffs2/security.c

@@ -0,0 +1,82 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2006  NEC Corporation
+ *
+ * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/pagemap.h>
+#include <linux/highmem.h>
+#include <linux/crc32.h>
+#include <linux/jffs2.h>
+#include <linux/xattr.h>
+#include <linux/mtd/mtd.h>
+#include <linux/security.h>
+#include "nodelist.h"
+
+/* ---- Initial Security Label Attachment -------------- */
+int jffs2_init_security(struct inode *inode, struct inode *dir)
+{
+	int rc;
+	size_t len;
+	void *value;
+	char *name;
+
+	rc = security_inode_init_security(inode, dir, &name, &value, &len);
+	if (rc) {
+		if (rc == -EOPNOTSUPP)
+			return 0;
+		return rc;
+	}
+	rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, value, len, 0);
+
+        kfree(name);
+        kfree(value);
+        return rc;
+}
+
+/* ---- XATTR Handler for "security.*" ----------------- */
+static int jffs2_security_getxattr(struct inode *inode, const char *name,
+				   void *buffer, size_t size)
+{
+	if (!strcmp(name, ""))
+		return -EINVAL;
+
+	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_SECURITY, name, buffer, size);
+}
+
+static int jffs2_security_setxattr(struct inode *inode, const char *name, const void *buffer,
+				   size_t size, int flags)
+{
+	if (!strcmp(name, ""))
+		return -EINVAL;
+
+	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, buffer, size, flags);
+}
+
+static size_t jffs2_security_listxattr(struct inode *inode, char *list, size_t list_size,
+				       const char *name, size_t name_len)
+{
+	size_t retlen = XATTR_SECURITY_PREFIX_LEN + name_len + 1;
+
+	if (list && retlen <= list_size) {
+		strcpy(list, XATTR_SECURITY_PREFIX);
+		strcpy(list + XATTR_SECURITY_PREFIX_LEN, name);
+	}
+
+	return retlen;
+}
+
+struct xattr_handler jffs2_security_xattr_handler = {
+	.prefix = XATTR_SECURITY_PREFIX,
+	.list = jffs2_security_listxattr,
+	.set = jffs2_security_setxattr,
+	.get = jffs2_security_getxattr
+};

fs/jffs2/summary.c

@@ -5,6 +5,7 @@
  *                     Zoltan Sogor <weth@inf.u-szeged.hu>,
  *                     Patrik Kluba <pajko@halom.u-szeged.hu>,
  *                     University of Szeged, Hungary
+ *               2005  KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
@@ -81,6 +82,19 @@ static int jffs2_sum_add_mem(struct jffs2_summary *s, union jffs2_sum_mem *item)
 			dbg_summary("dirent (%u) added to summary\n",
 						je32_to_cpu(item->d.ino));
 			break;
+#ifdef CONFIG_JFFS2_FS_XATTR
+		case JFFS2_NODETYPE_XATTR:
+			s->sum_size += JFFS2_SUMMARY_XATTR_SIZE;
+			s->sum_num++;
+			dbg_summary("xattr (xid=%u, version=%u) added to summary\n",
+				    je32_to_cpu(item->x.xid), je32_to_cpu(item->x.version));
+			break;
+		case JFFS2_NODETYPE_XREF:
+			s->sum_size += JFFS2_SUMMARY_XREF_SIZE;
+			s->sum_num++;
+			dbg_summary("xref added to summary\n");
+			break;
+#endif
 		default:
 			JFFS2_WARNING("UNKNOWN node type %u\n",
 					    je16_to_cpu(item->u.nodetype));
@@ -141,6 +155,40 @@ int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *r
 	return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp);
 }
 
+#ifdef CONFIG_JFFS2_FS_XATTR
+int jffs2_sum_add_xattr_mem(struct jffs2_summary *s, struct jffs2_raw_xattr *rx, uint32_t ofs)
+{
+	struct jffs2_sum_xattr_mem *temp;
+
+	temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL);
+	if (!temp)
+		return -ENOMEM;
+
+	temp->nodetype = rx->nodetype;
+	temp->xid = rx->xid;
+	temp->version = rx->version;
+	temp->offset = cpu_to_je32(ofs);
+	temp->totlen = rx->totlen;
+	temp->next = NULL;
+
+	return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp);
+}
+
+int jffs2_sum_add_xref_mem(struct jffs2_summary *s, struct jffs2_raw_xref *rr, uint32_t ofs)
+{
+	struct jffs2_sum_xref_mem *temp;
+
+	temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL);
+	if (!temp)
+		return -ENOMEM;
+
+	temp->nodetype = rr->nodetype;
+	temp->offset = cpu_to_je32(ofs);
+	temp->next = NULL;
+
+	return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp);
+}
+#endif
 /* Cleanup every collected summary information */
 
 static void jffs2_sum_clean_collected(struct jffs2_summary *s)
@@ -259,7 +307,40 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs,
 
 			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);
 		}
+#ifdef CONFIG_JFFS2_FS_XATTR
+		case JFFS2_NODETYPE_XATTR: {
+			struct jffs2_sum_xattr_mem *temp;
+			if (je32_to_cpu(node->x.version) == 0xffffffff)
+				return 0;
+			temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL);
+			if (!temp)
+				goto no_mem;
+
+			temp->nodetype = node->x.nodetype;
+			temp->xid = node->x.xid;
+			temp->version = node->x.version;
+			temp->totlen = node->x.totlen;
+			temp->offset = cpu_to_je32(ofs);
+			temp->next = NULL;
+
+			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);
+		}
+		case JFFS2_NODETYPE_XREF: {
+			struct jffs2_sum_xref_mem *temp;
+
+			if (je32_to_cpu(node->r.ino) == 0xffffffff
+			    && je32_to_cpu(node->r.xid) == 0xffffffff)
+				return 0;
+			temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL);
+			if (!temp)
+				goto no_mem;
+			temp->nodetype = node->r.nodetype;
+			temp->offset = cpu_to_je32(ofs);
+			temp->next = NULL;
 
+			return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp);
+		}
+#endif
 		case JFFS2_NODETYPE_PADDING:
 			dbg_summary("node PADDING\n");
 			c->summary->sum_padded += je32_to_cpu(node->u.totlen);
@@ -288,23 +369,41 @@ no_mem:
 	return -ENOMEM;
 }
 
+static struct jffs2_raw_node_ref *sum_link_node_ref(struct jffs2_sb_info *c,
+						    struct jffs2_eraseblock *jeb,
+						    uint32_t ofs, uint32_t len,
+						    struct jffs2_inode_cache *ic)
+{
+	/* If there was a gap, mark it dirty */
+	if ((ofs & ~3) > c->sector_size - jeb->free_size) {
+		/* Ew. Summary doesn't actually tell us explicitly about dirty space */
+		jffs2_scan_dirty_space(c, jeb, (ofs & ~3) - (c->sector_size - jeb->free_size));
+	}
+
+	return jffs2_link_node_ref(c, jeb, jeb->offset + ofs, len, ic);
+}
 
 /* Process the stored summary information - helper function for jffs2_sum_scan_sumnode() */
 
 static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
 				struct jffs2_raw_summary *summary, uint32_t *pseudo_random)
 {
-	struct jffs2_raw_node_ref *raw;
 	struct jffs2_inode_cache *ic;
 	struct jffs2_full_dirent *fd;
 	void *sp;
 	int i, ino;
+	int err;
 
 	sp = summary->sum;
 
 	for (i=0; i<je32_to_cpu(summary->sum_num); i++) {
 		dbg_summary("processing summary index %d\n", i);
 
+		/* Make sure there's a spare ref for dirty space */
+		err = jffs2_prealloc_raw_node_refs(c, jeb, 2);
+		if (err)
+			return err;
+
 		switch (je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype)) {
 			case JFFS2_NODETYPE_INODE: {
 				struct jffs2_sum_inode_flash *spi;
@@ -312,38 +411,20 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
 
 				ino = je32_to_cpu(spi->inode);
 
-				dbg_summary("Inode at 0x%08x\n",
-							jeb->offset + je32_to_cpu(spi->offset));
-
-				raw = jffs2_alloc_raw_node_ref();
-				if (!raw) {
-					JFFS2_NOTICE("allocation of node reference failed\n");
-					kfree(summary);
-					return -ENOMEM;
-				}
+				dbg_summary("Inode at 0x%08x-0x%08x\n",
+					    jeb->offset + je32_to_cpu(spi->offset),
+					    jeb->offset + je32_to_cpu(spi->offset) + je32_to_cpu(spi->totlen));
 
 				ic = jffs2_scan_make_ino_cache(c, ino);
 				if (!ic) {
 					JFFS2_NOTICE("scan_make_ino_cache failed\n");
-					jffs2_free_raw_node_ref(raw);
-					kfree(summary);
 					return -ENOMEM;
 				}
 
-				raw->flash_offset = (jeb->offset + je32_to_cpu(spi->offset)) | REF_UNCHECKED;
-				raw->__totlen = PAD(je32_to_cpu(spi->totlen));
-				raw->next_phys = NULL;
-				raw->next_in_ino = ic->nodes;
-
-				ic->nodes = raw;
-				if (!jeb->first_node)
-					jeb->first_node = raw;
-				if (jeb->last_node)
-					jeb->last_node->next_phys = raw;
-				jeb->last_node = raw;
-				*pseudo_random += je32_to_cpu(spi->version);
+				sum_link_node_ref(c, jeb, je32_to_cpu(spi->offset) | REF_UNCHECKED,
+						  PAD(je32_to_cpu(spi->totlen)), ic);
 
-				UNCHECKED_SPACE(PAD(je32_to_cpu(spi->totlen)));
+				*pseudo_random += je32_to_cpu(spi->version);
 
 				sp += JFFS2_SUMMARY_INODE_SIZE;
 
@@ -354,52 +435,33 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
 				struct jffs2_sum_dirent_flash *spd;
 				spd = sp;
 
-				dbg_summary("Dirent at 0x%08x\n",
-							jeb->offset + je32_to_cpu(spd->offset));
+				dbg_summary("Dirent at 0x%08x-0x%08x\n",
+					    jeb->offset + je32_to_cpu(spd->offset),
+					    jeb->offset + je32_to_cpu(spd->offset) + je32_to_cpu(spd->totlen));
+
 
 				fd = jffs2_alloc_full_dirent(spd->nsize+1);
-				if (!fd) {
-					kfree(summary);
+				if (!fd)
 					return -ENOMEM;
-				}
 
 				memcpy(&fd->name, spd->name, spd->nsize);
 				fd->name[spd->nsize] = 0;
 
-				raw = jffs2_alloc_raw_node_ref();
-				if (!raw) {
-					jffs2_free_full_dirent(fd);
-					JFFS2_NOTICE("allocation of node reference failed\n");
-					kfree(summary);
-					return -ENOMEM;
-				}
-
 				ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(spd->pino));
 				if (!ic) {
 					jffs2_free_full_dirent(fd);
-					jffs2_free_raw_node_ref(raw);
-					kfree(summary);
 					return -ENOMEM;
 				}
 
-				raw->__totlen = PAD(je32_to_cpu(spd->totlen));
-				raw->flash_offset = (jeb->offset + je32_to_cpu(spd->offset)) | REF_PRISTINE;
-				raw->next_phys = NULL;
-				raw->next_in_ino = ic->nodes;
-				ic->nodes = raw;
-				if (!jeb->first_node)
-					jeb->first_node = raw;
-				if (jeb->last_node)
-					jeb->last_node->next_phys = raw;
-				jeb->last_node = raw;
-
-				fd->raw = raw;
+				fd->raw = sum_link_node_ref(c, jeb,  je32_to_cpu(spd->offset) | REF_UNCHECKED,
+							    PAD(je32_to_cpu(spd->totlen)), ic);
+
 				fd->next = NULL;
 				fd->version = je32_to_cpu(spd->version);
 				fd->ino = je32_to_cpu(spd->ino);
 				fd->nhash = full_name_hash(fd->name, spd->nsize);
 				fd->type = spd->type;
-				USED_SPACE(PAD(je32_to_cpu(spd->totlen)));
+
 				jffs2_add_fd_to_list(c, fd, &ic->scan_dents);
 
 				*pseudo_random += je32_to_cpu(spd->version);
@@ -408,48 +470,105 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
 
 				break;
 			}
+#ifdef CONFIG_JFFS2_FS_XATTR
+			case JFFS2_NODETYPE_XATTR: {
+				struct jffs2_xattr_datum *xd;
+				struct jffs2_sum_xattr_flash *spx;
+
+				spx = (struct jffs2_sum_xattr_flash *)sp;
+				dbg_summary("xattr at %#08x-%#08x (xid=%u, version=%u)\n", 
+					    jeb->offset + je32_to_cpu(spx->offset),
+					    jeb->offset + je32_to_cpu(spx->offset) + je32_to_cpu(spx->totlen),
+					    je32_to_cpu(spx->xid), je32_to_cpu(spx->version));
+
+				xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid),
+								je32_to_cpu(spx->version));
+				if (IS_ERR(xd)) {
+					if (PTR_ERR(xd) == -EEXIST) {
+						/* a newer version of xd exists */
+						if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(spx->totlen))))
+							return err;
+						sp += JFFS2_SUMMARY_XATTR_SIZE;
+						break;
+					}
+					JFFS2_NOTICE("allocation of xattr_datum failed\n");
+					return PTR_ERR(xd);
+				}
+
+				xd->node = sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED,
+							     PAD(je32_to_cpu(spx->totlen)), NULL);
+				/* FIXME */ xd->node->next_in_ino = (void *)xd;
+
+				*pseudo_random += je32_to_cpu(spx->xid);
+				sp += JFFS2_SUMMARY_XATTR_SIZE;
+
+				break;
+			}
+			case JFFS2_NODETYPE_XREF: {
+				struct jffs2_xattr_ref *ref;
+				struct jffs2_sum_xref_flash *spr;
+
+				spr = (struct jffs2_sum_xref_flash *)sp;
+				dbg_summary("xref at %#08x-%#08x\n",
+					    jeb->offset + je32_to_cpu(spr->offset),
+					    jeb->offset + je32_to_cpu(spr->offset) + 
+					    (uint32_t)PAD(sizeof(struct jffs2_raw_xref)));
+
+				ref = jffs2_alloc_xattr_ref();
+				if (!ref) {
+					JFFS2_NOTICE("allocation of xattr_datum failed\n");
+					return -ENOMEM;
+				}
+				ref->ino = 0xfffffffe;
+				ref->xid = 0xfffffffd;
+				ref->next = c->xref_temp;
+				c->xref_temp = ref;
 
+				ref->node = sum_link_node_ref(c, jeb, je32_to_cpu(spr->offset) | REF_UNCHECKED,
+							      PAD(sizeof(struct jffs2_raw_xref)), NULL);
+				/* FIXME */ ref->node->next_in_ino = (void *)ref;
+
+				*pseudo_random += ref->node->flash_offset;
+				sp += JFFS2_SUMMARY_XREF_SIZE;
+
+				break;
+			}
+#endif
 			default : {
-				JFFS2_WARNING("Unsupported node type found in summary! Exiting...");
-				kfree(summary);
-				return -EIO;
+				uint16_t nodetype = je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype);
+				JFFS2_WARNING("Unsupported node type %x found in summary! Exiting...\n", nodetype);
+				if ((nodetype & JFFS2_COMPAT_MASK) == JFFS2_FEATURE_INCOMPAT)
+					return -EIO;
+
+				/* For compatible node types, just fall back to the full scan */
+				c->wasted_size -= jeb->wasted_size;
+				c->free_size += c->sector_size - jeb->free_size;
+				c->used_size -= jeb->used_size;
+				c->dirty_size -= jeb->dirty_size;
+				jeb->wasted_size = jeb->used_size = jeb->dirty_size = 0;
+				jeb->free_size = c->sector_size;
+
+				jffs2_free_jeb_node_refs(c, jeb);
+				return -ENOTRECOVERABLE;
 			}
 		}
 	}
-
-	kfree(summary);
 	return 0;
 }
 
 /* Process the summary node - called from jffs2_scan_eraseblock() */
-
 int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
-				uint32_t ofs, uint32_t *pseudo_random)
+			   struct jffs2_raw_summary *summary, uint32_t sumsize,
+			   uint32_t *pseudo_random)
 {
 	struct jffs2_unknown_node crcnode;
-	struct jffs2_raw_node_ref *cache_ref;
-	struct jffs2_raw_summary *summary;
-	int ret, sumsize;
+	int ret, ofs;
 	uint32_t crc;
 
-	sumsize = c->sector_size - ofs;
-	ofs += jeb->offset;
+	ofs = c->sector_size - sumsize;
 
 	dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n",
-				jeb->offset, ofs, sumsize);
-
-	summary = kmalloc(sumsize, GFP_KERNEL);
-
-	if (!summary) {
-		return -ENOMEM;
-	}
-
-	ret = jffs2_fill_scan_buf(c, (unsigned char *)summary, ofs, sumsize);
-
-	if (ret) {
-		kfree(summary);
-		return ret;
-	}
+		    jeb->offset, jeb->offset + ofs, sumsize);
 
 	/* OK, now check for node validity and CRC */
 	crcnode.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -486,66 +605,49 @@ int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
 
 		dbg_summary("Summary : CLEANMARKER node \n");
 
+		ret = jffs2_prealloc_raw_node_refs(c, jeb, 1);
+		if (ret)
+			return ret;
+
 		if (je32_to_cpu(summary->cln_mkr) != c->cleanmarker_size) {
 			dbg_summary("CLEANMARKER node has totlen 0x%x != normal 0x%x\n",
 				je32_to_cpu(summary->cln_mkr), c->cleanmarker_size);
-			UNCHECKED_SPACE(PAD(je32_to_cpu(summary->cln_mkr)));
+			if ((ret = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr)))))
+				return ret;
 		} else if (jeb->first_node) {
 			dbg_summary("CLEANMARKER node not first node in block "
 					"(0x%08x)\n", jeb->offset);
-			UNCHECKED_SPACE(PAD(je32_to_cpu(summary->cln_mkr)));
+			if ((ret = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr)))))
+				return ret;
 		} else {
-			struct jffs2_raw_node_ref *marker_ref = jffs2_alloc_raw_node_ref();
-
-			if (!marker_ref) {
-				JFFS2_NOTICE("Failed to allocate node ref for clean marker\n");
-				kfree(summary);
-				return -ENOMEM;
-			}
-
-			marker_ref->next_in_ino = NULL;
-			marker_ref->next_phys = NULL;
-			marker_ref->flash_offset = jeb->offset | REF_NORMAL;
-			marker_ref->__totlen = je32_to_cpu(summary->cln_mkr);
-			jeb->first_node = jeb->last_node = marker_ref;
-
-			USED_SPACE( PAD(je32_to_cpu(summary->cln_mkr)) );
+			jffs2_link_node_ref(c, jeb, jeb->offset | REF_NORMAL,
+					    je32_to_cpu(summary->cln_mkr), NULL);
 		}
 	}
 
-	if (je32_to_cpu(summary->padded)) {
-		DIRTY_SPACE(je32_to_cpu(summary->padded));
-	}
-
 	ret = jffs2_sum_process_sum_data(c, jeb, summary, pseudo_random);
+	/* -ENOTRECOVERABLE isn't a fatal error -- it means we should do a full
+	   scan of this eraseblock. So return zero */
+	if (ret == -ENOTRECOVERABLE)
+		return 0;
 	if (ret)
-		return ret;
+		return ret;		/* real error */
 
 	/* for PARANOIA_CHECK */
-	cache_ref = jffs2_alloc_raw_node_ref();
-
-	if (!cache_ref) {
-		JFFS2_NOTICE("Failed to allocate node ref for cache\n");
-		return -ENOMEM;
-	}
-
-	cache_ref->next_in_ino = NULL;
-	cache_ref->next_phys = NULL;
-	cache_ref->flash_offset = ofs | REF_NORMAL;
-	cache_ref->__totlen = sumsize;
-
-	if (!jeb->first_node)
-		jeb->first_node = cache_ref;
-	if (jeb->last_node)
-		jeb->last_node->next_phys = cache_ref;
-	jeb->last_node = cache_ref;
+	ret = jffs2_prealloc_raw_node_refs(c, jeb, 2);
+	if (ret)
+		return ret;
 
-	USED_SPACE(sumsize);
+	sum_link_node_ref(c, jeb, ofs | REF_NORMAL, sumsize, NULL);
 
-	jeb->wasted_size += jeb->free_size;
-	c->wasted_size += jeb->free_size;
-	c->free_size -= jeb->free_size;
-	jeb->free_size = 0;
+	if (unlikely(jeb->free_size)) {
+		JFFS2_WARNING("Free size 0x%x bytes in eraseblock @0x%08x with summary?\n",
+			      jeb->free_size, jeb->offset);
+		jeb->wasted_size += jeb->free_size;
+		c->wasted_size += jeb->free_size;
+		c->free_size -= jeb->free_size;
+		jeb->free_size = 0;
+	}
 
 	return jffs2_scan_classify_jeb(c, jeb);
 
@@ -564,6 +666,7 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
 	union jffs2_sum_mem *temp;
 	struct jffs2_sum_marker *sm;
 	struct kvec vecs[2];
+	uint32_t sum_ofs;
 	void *wpage;
 	int ret;
 	size_t retlen;
@@ -581,16 +684,17 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
 	wpage = c->summary->sum_buf;
 
 	while (c->summary->sum_num) {
+		temp = c->summary->sum_list_head;
 
-		switch (je16_to_cpu(c->summary->sum_list_head->u.nodetype)) {
+		switch (je16_to_cpu(temp->u.nodetype)) {
 			case JFFS2_NODETYPE_INODE: {
 				struct jffs2_sum_inode_flash *sino_ptr = wpage;
 
-				sino_ptr->nodetype = c->summary->sum_list_head->i.nodetype;
-				sino_ptr->inode = c->summary->sum_list_head->i.inode;
-				sino_ptr->version = c->summary->sum_list_head->i.version;
-				sino_ptr->offset = c->summary->sum_list_head->i.offset;
-				sino_ptr->totlen = c->summary->sum_list_head->i.totlen;
+				sino_ptr->nodetype = temp->i.nodetype;
+				sino_ptr->inode = temp->i.inode;
+				sino_ptr->version = temp->i.version;
+				sino_ptr->offset = temp->i.offset;
+				sino_ptr->totlen = temp->i.totlen;
 
 				wpage += JFFS2_SUMMARY_INODE_SIZE;
 
@@ -600,30 +704,60 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
 			case JFFS2_NODETYPE_DIRENT: {
 				struct jffs2_sum_dirent_flash *sdrnt_ptr = wpage;
 
-				sdrnt_ptr->nodetype = c->summary->sum_list_head->d.nodetype;
-				sdrnt_ptr->totlen = c->summary->sum_list_head->d.totlen;
-				sdrnt_ptr->offset = c->summary->sum_list_head->d.offset;
-				sdrnt_ptr->pino = c->summary->sum_list_head->d.pino;
-				sdrnt_ptr->version = c->summary->sum_list_head->d.version;
-				sdrnt_ptr->ino = c->summary->sum_list_head->d.ino;
-				sdrnt_ptr->nsize = c->summary->sum_list_head->d.nsize;
-				sdrnt_ptr->type = c->summary->sum_list_head->d.type;
+				sdrnt_ptr->nodetype = temp->d.nodetype;
+				sdrnt_ptr->totlen = temp->d.totlen;
+				sdrnt_ptr->offset = temp->d.offset;
+				sdrnt_ptr->pino = temp->d.pino;
+				sdrnt_ptr->version = temp->d.version;
+				sdrnt_ptr->ino = temp->d.ino;
+				sdrnt_ptr->nsize = temp->d.nsize;
+				sdrnt_ptr->type = temp->d.type;
 
-				memcpy(sdrnt_ptr->name, c->summary->sum_list_head->d.name,
-							c->summary->sum_list_head->d.nsize);
+				memcpy(sdrnt_ptr->name, temp->d.name,
+							temp->d.nsize);
 
-				wpage += JFFS2_SUMMARY_DIRENT_SIZE(c->summary->sum_list_head->d.nsize);
+				wpage += JFFS2_SUMMARY_DIRENT_SIZE(temp->d.nsize);
 
 				break;
 			}
+#ifdef CONFIG_JFFS2_FS_XATTR
+			case JFFS2_NODETYPE_XATTR: {
+				struct jffs2_sum_xattr_flash *sxattr_ptr = wpage;
+
+				temp = c->summary->sum_list_head;
+				sxattr_ptr->nodetype = temp->x.nodetype;
+				sxattr_ptr->xid = temp->x.xid;
+				sxattr_ptr->version = temp->x.version;
+				sxattr_ptr->offset = temp->x.offset;
+				sxattr_ptr->totlen = temp->x.totlen;
+
+				wpage += JFFS2_SUMMARY_XATTR_SIZE;
+				break;
+			}
+			case JFFS2_NODETYPE_XREF: {
+				struct jffs2_sum_xref_flash *sxref_ptr = wpage;
 
+				temp = c->summary->sum_list_head;
+				sxref_ptr->nodetype = temp->r.nodetype;
+				sxref_ptr->offset = temp->r.offset;
+
+				wpage += JFFS2_SUMMARY_XREF_SIZE;
+				break;
+			}
+#endif
 			default : {
-				BUG();	/* unknown node in summary information */
+				if ((je16_to_cpu(temp->u.nodetype) & JFFS2_COMPAT_MASK)
+				    == JFFS2_FEATURE_RWCOMPAT_COPY) {
+					dbg_summary("Writing unknown RWCOMPAT_COPY node type %x\n",
+						    je16_to_cpu(temp->u.nodetype));
+					jffs2_sum_disable_collecting(c->summary);
+				} else {
+					BUG();	/* unknown node in summary information */
+				}
 			}
 		}
 
-		temp = c->summary->sum_list_head;
-		c->summary->sum_list_head = c->summary->sum_list_head->u.next;
+		c->summary->sum_list_head = temp->u.next;
 		kfree(temp);
 
 		c->summary->sum_num--;
@@ -645,25 +779,34 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
 	vecs[1].iov_base = c->summary->sum_buf;
 	vecs[1].iov_len = datasize;
 
-	dbg_summary("JFFS2: writing out data to flash to pos : 0x%08x\n",
-			jeb->offset + c->sector_size - jeb->free_size);
+	sum_ofs = jeb->offset + c->sector_size - jeb->free_size;
 
-	spin_unlock(&c->erase_completion_lock);
-	ret = jffs2_flash_writev(c, vecs, 2, jeb->offset + c->sector_size -
-				jeb->free_size, &retlen, 0);
-	spin_lock(&c->erase_completion_lock);
+	dbg_summary("JFFS2: writing out data to flash to pos : 0x%08x\n",
+		    sum_ofs);
 
+	ret = jffs2_flash_writev(c, vecs, 2, sum_ofs, &retlen, 0);
 
 	if (ret || (retlen != infosize)) {
-		JFFS2_WARNING("Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
-			infosize, jeb->offset + c->sector_size - jeb->free_size, ret, retlen);
+
+		JFFS2_WARNING("Write of %u bytes at 0x%08x failed. returned %d, retlen %zd\n",
+			      infosize, sum_ofs, ret, retlen);
+
+		if (retlen) {
+			/* Waste remaining space */
+			spin_lock(&c->erase_completion_lock);
+			jffs2_link_node_ref(c, jeb, sum_ofs | REF_OBSOLETE, infosize, NULL);
+			spin_unlock(&c->erase_completion_lock);
+		}
 
 		c->summary->sum_size = JFFS2_SUMMARY_NOSUM_SIZE;
-		WASTED_SPACE(infosize);
 
-		return 1;
+		return 0;
 	}
 
+	spin_lock(&c->erase_completion_lock);
+	jffs2_link_node_ref(c, jeb, sum_ofs | REF_NORMAL, infosize, NULL);
+	spin_unlock(&c->erase_completion_lock);
+
 	return 0;
 }
 
@@ -671,13 +814,16 @@ static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock
 
 int jffs2_sum_write_sumnode(struct jffs2_sb_info *c)
 {
-	struct jffs2_raw_node_ref *summary_ref;
-	int datasize, infosize, padsize, ret;
+	int datasize, infosize, padsize;
 	struct jffs2_eraseblock *jeb;
+	int ret;
 
 	dbg_summary("called\n");
 
+	spin_unlock(&c->erase_completion_lock);
+
 	jeb = c->nextblock;
+	jffs2_prealloc_raw_node_refs(c, jeb, 1);
 
 	if (!c->summary->sum_num || !c->summary->sum_list_head) {
 		JFFS2_WARNING("Empty summary info!!!\n");
@@ -696,35 +842,11 @@ int jffs2_sum_write_sumnode(struct jffs2_sb_info *c)
 		jffs2_sum_disable_collecting(c->summary);
 
 		JFFS2_WARNING("Not enough space for summary, padsize = %d\n", padsize);
+		spin_lock(&c->erase_completion_lock);
 		return 0;
 	}
 
 	ret = jffs2_sum_write_data(c, jeb, infosize, datasize, padsize);
-	if (ret)
-		return 0; /* can't write out summary, block is marked as NOSUM_SIZE */
-
-	/* for ACCT_PARANOIA_CHECK */
-	spin_unlock(&c->erase_completion_lock);
-	summary_ref = jffs2_alloc_raw_node_ref();
 	spin_lock(&c->erase_completion_lock);
-
-	if (!summary_ref) {
-		JFFS2_NOTICE("Failed to allocate node ref for summary\n");
-		return -ENOMEM;
-	}
-
-	summary_ref->next_in_ino = NULL;
-	summary_ref->next_phys = NULL;
-	summary_ref->flash_offset = (jeb->offset + c->sector_size - jeb->free_size) | REF_NORMAL;
-	summary_ref->__totlen = infosize;
-
-	if (!jeb->first_node)
-		jeb->first_node = summary_ref;
-	if (jeb->last_node)
-		jeb->last_node->next_phys = summary_ref;
-	jeb->last_node = summary_ref;
-
-	USED_SPACE(infosize);
-
-	return 0;
+	return ret;
 }

fs/jffs2/summary.h

@@ -18,23 +18,6 @@
 #include <linux/uio.h>
 #include <linux/jffs2.h>
 
-#define DIRTY_SPACE(x) do { typeof(x) _x = (x); \
-		c->free_size -= _x; c->dirty_size += _x; \
-		jeb->free_size -= _x ; jeb->dirty_size += _x; \
-		}while(0)
-#define USED_SPACE(x) do { typeof(x) _x = (x); \
-		c->free_size -= _x; c->used_size += _x; \
-		jeb->free_size -= _x ; jeb->used_size += _x; \
-		}while(0)
-#define WASTED_SPACE(x) do { typeof(x) _x = (x); \
-		c->free_size -= _x; c->wasted_size += _x; \
-		jeb->free_size -= _x ; jeb->wasted_size += _x; \
-		}while(0)
-#define UNCHECKED_SPACE(x) do { typeof(x) _x = (x); \
-		c->free_size -= _x; c->unchecked_size += _x; \
-		jeb->free_size -= _x ; jeb->unchecked_size += _x; \
-		}while(0)
-
 #define BLK_STATE_ALLFF		0
 #define BLK_STATE_CLEAN		1
 #define BLK_STATE_PARTDIRTY	2
@@ -45,6 +28,8 @@
 #define JFFS2_SUMMARY_NOSUM_SIZE 0xffffffff
 #define JFFS2_SUMMARY_INODE_SIZE (sizeof(struct jffs2_sum_inode_flash))
 #define JFFS2_SUMMARY_DIRENT_SIZE(x) (sizeof(struct jffs2_sum_dirent_flash) + (x))
+#define JFFS2_SUMMARY_XATTR_SIZE (sizeof(struct jffs2_sum_xattr_flash))
+#define JFFS2_SUMMARY_XREF_SIZE (sizeof(struct jffs2_sum_xref_flash))
 
 /* Summary structures used on flash */
 
@@ -75,11 +60,28 @@ struct jffs2_sum_dirent_flash
 	uint8_t name[0];	/* dirent name */
 } __attribute__((packed));
 
+struct jffs2_sum_xattr_flash
+{
+	jint16_t nodetype;	/* == JFFS2_NODETYPE_XATR */
+	jint32_t xid;		/* xattr identifier */
+	jint32_t version;	/* version number */
+	jint32_t offset;	/* offset on jeb */
+	jint32_t totlen;	/* node length */
+} __attribute__((packed));
+
+struct jffs2_sum_xref_flash
+{
+	jint16_t nodetype;	/* == JFFS2_NODETYPE_XREF */
+	jint32_t offset;	/* offset on jeb */
+} __attribute__((packed));
+
 union jffs2_sum_flash
 {
 	struct jffs2_sum_unknown_flash u;
 	struct jffs2_sum_inode_flash i;
 	struct jffs2_sum_dirent_flash d;
+	struct jffs2_sum_xattr_flash x;
+	struct jffs2_sum_xref_flash r;
 };
 
 /* Summary structures used in the memory */
@@ -114,11 +116,30 @@ struct jffs2_sum_dirent_mem
 	uint8_t name[0];	/* dirent name */
 } __attribute__((packed));
 
+struct jffs2_sum_xattr_mem
+{
+	union jffs2_sum_mem *next;
+	jint16_t nodetype;
+	jint32_t xid;
+	jint32_t version;
+	jint32_t offset;
+	jint32_t totlen;
+} __attribute__((packed));
+
+struct jffs2_sum_xref_mem
+{
+	union jffs2_sum_mem *next;
+	jint16_t nodetype;
+	jint32_t offset;
+} __attribute__((packed));
+
 union jffs2_sum_mem
 {
 	struct jffs2_sum_unknown_mem u;
 	struct jffs2_sum_inode_mem i;
 	struct jffs2_sum_dirent_mem d;
+	struct jffs2_sum_xattr_mem x;
+	struct jffs2_sum_xref_mem r;
 };
 
 /* Summary related information stored in superblock */
@@ -159,8 +180,11 @@ int jffs2_sum_write_sumnode(struct jffs2_sb_info *c);
 int jffs2_sum_add_padding_mem(struct jffs2_summary *s, uint32_t size);
 int jffs2_sum_add_inode_mem(struct jffs2_summary *s, struct jffs2_raw_inode *ri, uint32_t ofs);
 int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *rd, uint32_t ofs);
+int jffs2_sum_add_xattr_mem(struct jffs2_summary *s, struct jffs2_raw_xattr *rx, uint32_t ofs);
+int jffs2_sum_add_xref_mem(struct jffs2_summary *s, struct jffs2_raw_xref *rr, uint32_t ofs);
 int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
-			uint32_t ofs, uint32_t *pseudo_random);
+			   struct jffs2_raw_summary *summary, uint32_t sumlen,
+			   uint32_t *pseudo_random);
 
 #else				/* SUMMARY DISABLED */
 
@@ -176,7 +200,9 @@ int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
 #define jffs2_sum_add_padding_mem(a,b)
 #define jffs2_sum_add_inode_mem(a,b,c)
 #define jffs2_sum_add_dirent_mem(a,b,c)
-#define jffs2_sum_scan_sumnode(a,b,c,d) (0)
+#define jffs2_sum_add_xattr_mem(a,b,c)
+#define jffs2_sum_add_xref_mem(a,b,c)
+#define jffs2_sum_scan_sumnode(a,b,c,d,e) (0)
 
 #endif /* CONFIG_JFFS2_SUMMARY */
 

fs/jffs2/super.c

@@ -151,7 +151,10 @@ static struct super_block *jffs2_get_sb_mtd(struct file_system_type *fs_type,
 
 	sb->s_op = &jffs2_super_operations;
 	sb->s_flags = flags | MS_NOATIME;
-
+	sb->s_xattr = jffs2_xattr_handlers;
+#ifdef CONFIG_JFFS2_FS_POSIX_ACL
+	sb->s_flags |= MS_POSIXACL;
+#endif
 	ret = jffs2_do_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
 
 	if (ret) {
@@ -293,6 +296,7 @@ static void jffs2_put_super (struct super_block *sb)
 		kfree(c->blocks);
 	jffs2_flash_cleanup(c);
 	kfree(c->inocache_list);
+	jffs2_clear_xattr_subsystem(c);
 	if (c->mtd->sync)
 		c->mtd->sync(c->mtd);
 
@@ -320,6 +324,18 @@ static int __init init_jffs2_fs(void)
 {
 	int ret;
 
+	/* Paranoia checks for on-medium structures. If we ask GCC
+	   to pack them with __attribute__((packed)) then it _also_
+	   assumes that they're not aligned -- so it emits crappy
+	   code on some architectures. Ideally we want an attribute
+	   which means just 'no padding', without the alignment
+	   thing. But GCC doesn't have that -- we have to just
+	   hope the structs are the right sizes, instead. */
+	BUG_ON(sizeof(struct jffs2_unknown_node) != 12);
+	BUG_ON(sizeof(struct jffs2_raw_dirent) != 40);
+	BUG_ON(sizeof(struct jffs2_raw_inode) != 68);
+	BUG_ON(sizeof(struct jffs2_raw_summary) != 32);
+
 	printk(KERN_INFO "JFFS2 version 2.2."
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 	       " (NAND)"
@@ -327,7 +343,7 @@ static int __init init_jffs2_fs(void)
 #ifdef CONFIG_JFFS2_SUMMARY
 	       " (SUMMARY) "
 #endif
-	       " (C) 2001-2003 Red Hat, Inc.\n");
+	       " (C) 2001-2006 Red Hat, Inc.\n");
 
 	jffs2_inode_cachep = kmem_cache_create("jffs2_i",
 					     sizeof(struct jffs2_inode_info),