Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (56 commits)
  ieee1394: remove garbage from Kconfig
  ieee1394: more help in Kconfig
  ieee1394: ohci1394: Fix mistake in printk message.
  ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl register
  ieee1394: ohci1394: fix cosmetic problem in error logging
  ieee1394: eth1394: send async streams at S100 on 1394b buses
  ieee1394: eth1394: fix error path in module_init
  ieee1394: eth1394: correct return codes in hard_start_xmit
  ieee1394: eth1394: hard_start_xmit is called in atomic context
  ieee1394: eth1394: some conditions are unlikely
  ieee1394: eth1394: clean up fragment_overlap
  ieee1394: eth1394: don't use alloc_etherdev
  ieee1394: eth1394: omit useless set_mac_address callback
  ieee1394: eth1394: CONFIG_INET is always defined
  ieee1394: eth1394: allow MTU bigger than 1500
  ieee1394: unexport highlevel_host_reset
  ieee1394: eth1394: contain host reset
  ieee1394: eth1394: shorter error messages
  ieee1394: eth1394: correct a memset argument
  ieee1394: eth1394: refactor .probe and .update
  ...

drivers/ieee1394/Kconfig

@@ -1,11 +1,8 @@
-# -*- shell-script -*-
-
 menu "IEEE 1394 (FireWire) support"
 
 config IEEE1394
 	tristate "IEEE 1394 (FireWire) support"
 	depends on PCI || BROKEN
-	select NET
 	help
 	  IEEE 1394 describes a high performance serial bus, which is also
 	  known as FireWire(tm) or i.Link(tm) and is used for connecting all
@@ -35,24 +32,7 @@ config IEEE1394_VERBOSEDEBUG
 	  Say Y if you really want or need the debugging output, everyone
 	  else says N.
 
-config IEEE1394_EXTRA_CONFIG_ROMS
-	bool "Build in extra config rom entries for certain functionality"
-	depends on IEEE1394
-	help
-	  Some IEEE1394 functionality depends on extra config rom entries
-	  being available in the host adapters CSR. These options will
-	  allow you to choose which ones.
-
-config IEEE1394_CONFIG_ROM_IP1394
-	bool "IP-1394 Entry"
-	depends on IEEE1394_EXTRA_CONFIG_ROMS && IEEE1394
-	help
-	  Adds an entry for using IP-over-1394. If you want to use your
-	  IEEE1394 bus as a network for IP systems (including interacting
-	  with MacOSX and WinXP IP-over-1394), enable this option and the
-	  eth1394 option below.
-
-comment "Device Drivers"
+comment "Controllers"
 	depends on IEEE1394
 
 comment "Texas Instruments PCILynx requires I2C"
@@ -70,6 +50,10 @@ config IEEE1394_PCILYNX
 	  To compile this driver as a module, say M here: the
 	  module will be called pcilynx.
 
+	  Only some old and now very rare PCI and CardBus cards and
+	  PowerMacs G3 B&W contain the PCILynx controller.  Therefore
+	  almost everybody can say N here.
+
 config IEEE1394_OHCI1394
 	tristate "OHCI-1394 support"
 	depends on PCI && IEEE1394
@@ -83,7 +67,7 @@ config IEEE1394_OHCI1394
 	  To compile this driver as a module, say M here: the
 	  module will be called ohci1394.
 
-comment "Protocol Drivers"
+comment "Protocols"
 	depends on IEEE1394
 
 config IEEE1394_VIDEO1394
@@ -121,11 +105,15 @@ config IEEE1394_SBP2_PHYS_DMA
 	  This option is buggy and currently broken on some architectures.
 	  If unsure, say N.
 
+config IEEE1394_ETH1394_ROM_ENTRY
+	depends on IEEE1394
+	bool
+	default n
+
 config IEEE1394_ETH1394
-	tristate "Ethernet over 1394"
+	tristate "IP over 1394"
 	depends on IEEE1394 && EXPERIMENTAL && INET
-	select IEEE1394_CONFIG_ROM_IP1394
-	select IEEE1394_EXTRA_CONFIG_ROMS
+	select IEEE1394_ETH1394_ROM_ENTRY
 	help
 	  This driver implements a functional majority of RFC 2734: IPv4 over
 	  1394.  It will provide IP connectivity with implementations of RFC
@@ -134,6 +122,8 @@ config IEEE1394_ETH1394
 	  This driver is still considered experimental.  It does not yet support
 	  MCAP, therefore multicast support is significantly limited.
 
+	  The module is called eth1394 although it does not emulate Ethernet.
+
 config IEEE1394_DV1394
 	tristate "OHCI-DV I/O support (deprecated)"
 	depends on IEEE1394 && IEEE1394_OHCI1394
@@ -146,12 +136,12 @@ config IEEE1394_RAWIO
 	tristate "Raw IEEE1394 I/O support"
 	depends on IEEE1394
 	help
-	  Say Y here if you want support for the raw device. This is generally
-	  a good idea, so you should say Y here. The raw device enables
-	  direct communication of user programs with the IEEE 1394 bus and
-	  thus with the attached peripherals.
+	  This option adds support for the raw1394 device file which enables
+	  direct communication of user programs with the IEEE 1394 bus and thus
+	  with the attached peripherals.  Almost all application programs which
+	  access FireWire require this option.
 
-	  To compile this driver as a module, say M here: the
-	  module will be called raw1394.
+	  To compile this driver as a module, say M here: the module will be
+	  called raw1394.
 
 endmenu

drivers/ieee1394/config_roms.c

@@ -26,12 +26,6 @@ struct hpsb_config_rom_entry {
 	/* Base initialization, called at module load */
 	int (*init)(void);
 
-	/* Add entry to specified host */
-	int (*add)(struct hpsb_host *host);
-
-	/* Remove entry from specified host */
-	void (*remove)(struct hpsb_host *host);
-
 	/* Cleanup called at module exit */
 	void (*cleanup)(void);
 
@@ -39,7 +33,7 @@ struct hpsb_config_rom_entry {
 	unsigned int flag;
 };
 
-
+/* The default host entry. This must succeed. */
 int hpsb_default_host_entry(struct hpsb_host *host)
 {
 	struct csr1212_keyval *root;
@@ -63,9 +57,9 @@ int hpsb_default_host_entry(struct hpsb_host *host)
 		return -ENOMEM;
 	}
 
-	ret = csr1212_associate_keyval(vend_id, text);
+	csr1212_associate_keyval(vend_id, text);
 	csr1212_release_keyval(text);
-	ret |= csr1212_attach_keyval_to_directory(root, vend_id);
+	ret = csr1212_attach_keyval_to_directory(root, vend_id);
 	csr1212_release_keyval(vend_id);
 	if (ret != CSR1212_SUCCESS) {
 		csr1212_destroy_csr(host->csr.rom);
@@ -78,7 +72,7 @@ int hpsb_default_host_entry(struct hpsb_host *host)
 }
 
 
-#ifdef CONFIG_IEEE1394_CONFIG_ROM_IP1394
+#ifdef CONFIG_IEEE1394_ETH1394_ROM_ENTRY
 #include "eth1394.h"
 
 static struct csr1212_keyval *ip1394_ud;
@@ -103,10 +97,12 @@ static int config_rom_ip1394_init(void)
 	if (!ip1394_ud || !spec_id || !spec_desc || !ver || !ver_desc)
 		goto ip1394_fail;
 
-	if (csr1212_associate_keyval(spec_id, spec_desc) == CSR1212_SUCCESS &&
-	    csr1212_associate_keyval(ver, ver_desc) == CSR1212_SUCCESS &&
-	    csr1212_attach_keyval_to_directory(ip1394_ud, spec_id) == CSR1212_SUCCESS &&
-	    csr1212_attach_keyval_to_directory(ip1394_ud, ver) == CSR1212_SUCCESS)
+	csr1212_associate_keyval(spec_id, spec_desc);
+	csr1212_associate_keyval(ver, ver_desc);
+	if (csr1212_attach_keyval_to_directory(ip1394_ud, spec_id)
+			== CSR1212_SUCCESS &&
+	    csr1212_attach_keyval_to_directory(ip1394_ud, ver)
+			== CSR1212_SUCCESS)
 		ret = 0;
 
 ip1394_fail:
@@ -135,7 +131,7 @@ static void config_rom_ip1394_cleanup(void)
 	}
 }
 
-static int config_rom_ip1394_add(struct hpsb_host *host)
+int hpsb_config_rom_ip1394_add(struct hpsb_host *host)
 {
 	if (!ip1394_ud)
 		return -ENODEV;
@@ -144,92 +140,55 @@ static int config_rom_ip1394_add(struct hpsb_host *host)
 					       ip1394_ud) != CSR1212_SUCCESS)
 		return -ENOMEM;
 
+	host->config_roms |= HPSB_CONFIG_ROM_ENTRY_IP1394;
+	host->update_config_rom = 1;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(hpsb_config_rom_ip1394_add);
 
-static void config_rom_ip1394_remove(struct hpsb_host *host)
+void hpsb_config_rom_ip1394_remove(struct hpsb_host *host)
 {
 	csr1212_detach_keyval_from_directory(host->csr.rom->root_kv, ip1394_ud);
+	host->config_roms &= ~HPSB_CONFIG_ROM_ENTRY_IP1394;
+	host->update_config_rom = 1;
 }
+EXPORT_SYMBOL_GPL(hpsb_config_rom_ip1394_remove);
 
 static struct hpsb_config_rom_entry ip1394_entry = {
 	.name		= "ip1394",
 	.init		= config_rom_ip1394_init,
-	.add		= config_rom_ip1394_add,
-	.remove		= config_rom_ip1394_remove,
 	.cleanup	= config_rom_ip1394_cleanup,
 	.flag		= HPSB_CONFIG_ROM_ENTRY_IP1394,
 };
-#endif /* CONFIG_IEEE1394_CONFIG_ROM_IP1394 */
 
+#endif /* CONFIG_IEEE1394_ETH1394_ROM_ENTRY */
 
 static struct hpsb_config_rom_entry *const config_rom_entries[] = {
-#ifdef CONFIG_IEEE1394_CONFIG_ROM_IP1394
+#ifdef CONFIG_IEEE1394_ETH1394_ROM_ENTRY
 	&ip1394_entry,
 #endif
-	NULL,
 };
 
-
+/* Initialize all config roms */
 int hpsb_init_config_roms(void)
 {
 	int i, error = 0;
 
-	for (i = 0; config_rom_entries[i]; i++) {
-		if (!config_rom_entries[i]->init)
-			continue;
-
+	for (i = 0; i < ARRAY_SIZE(config_rom_entries); i++)
 		if (config_rom_entries[i]->init()) {
 			HPSB_ERR("Failed to initialize config rom entry `%s'",
 				 config_rom_entries[i]->name);
 			error = -1;
-		} else
-			HPSB_DEBUG("Initialized config rom entry `%s'",
-				   config_rom_entries[i]->name);
-	}
-
-	return error;
-}
-
-void hpsb_cleanup_config_roms(void)
-{
-	int i;
-
-	for (i = 0; config_rom_entries[i]; i++) {
-		if (config_rom_entries[i]->cleanup)
-			config_rom_entries[i]->cleanup();
-	}
-}
-
-int hpsb_add_extra_config_roms(struct hpsb_host *host)
-{
-	int i, error = 0;
-
-	for (i = 0; config_rom_entries[i]; i++) {
-		if (config_rom_entries[i]->add(host)) {
-			HPSB_ERR("fw-host%d: Failed to attach config rom entry `%s'",
-				 host->id, config_rom_entries[i]->name);
-			error = -1;
-		} else {
-			host->config_roms |= config_rom_entries[i]->flag;
-			host->update_config_rom = 1;
 		}
-	}
 
 	return error;
 }
 
-void hpsb_remove_extra_config_roms(struct hpsb_host *host)
+/* Cleanup all config roms */
+void hpsb_cleanup_config_roms(void)
 {
 	int i;
 
-	for (i = 0; config_rom_entries[i]; i++) {
-		if (!(host->config_roms & config_rom_entries[i]->flag))
-			continue;
-
-		config_rom_entries[i]->remove(host);
-
-		host->config_roms &= ~config_rom_entries[i]->flag;
-		host->update_config_rom = 1;
-	}
+	for (i = 0; i < ARRAY_SIZE(config_rom_entries); i++)
+		config_rom_entries[i]->cleanup();
 }

drivers/ieee1394/config_roms.h

@@ -1,27 +1,19 @@
 #ifndef _IEEE1394_CONFIG_ROMS_H
 #define _IEEE1394_CONFIG_ROMS_H
 
-#include "ieee1394_types.h"
-#include "hosts.h"
+struct hpsb_host;
 
-/* The default host entry. This must succeed. */
 int hpsb_default_host_entry(struct hpsb_host *host);
-
-/* Initialize all config roms */
 int hpsb_init_config_roms(void);
-
-/* Cleanup all config roms */
 void hpsb_cleanup_config_roms(void);
 
-/* Add extra config roms to specified host */
-int hpsb_add_extra_config_roms(struct hpsb_host *host);
-
-/* Remove extra config roms from specified host */
-void hpsb_remove_extra_config_roms(struct hpsb_host *host);
-
-
 /* List of flags to check if a host contains a certain extra config rom
  * entry. Available in the host->config_roms member. */
 #define HPSB_CONFIG_ROM_ENTRY_IP1394		0x00000001
 
+#ifdef CONFIG_IEEE1394_ETH1394_ROM_ENTRY
+int hpsb_config_rom_ip1394_add(struct hpsb_host *host);
+void hpsb_config_rom_ip1394_remove(struct hpsb_host *host);
+#endif
+
 #endif /* _IEEE1394_CONFIG_ROMS_H */

drivers/ieee1394/csr1212.c

@@ -31,12 +31,13 @@
 /* TODO List:
  * - Verify interface consistency: i.e., public functions that take a size
  *   parameter expect size to be in bytes.
- * - Convenience functions for reading a block of data from a given offset.
  */
 
-#ifndef __KERNEL__
-#include <string.h>
-#endif
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <asm/bug.h>
+#include <asm/byteorder.h>
 
 #include "csr1212.h"
 
@@ -46,7 +47,7 @@
 #define __C (1 << CSR1212_KV_TYPE_CSR_OFFSET)
 #define __D (1 << CSR1212_KV_TYPE_DIRECTORY)
 #define __L (1 << CSR1212_KV_TYPE_LEAF)
-static const u_int8_t csr1212_key_id_type_map[0x30] = {
+static const u8 csr1212_key_id_type_map[0x30] = {
 	__C,			/* used by Apple iSight */
 	__D | __L,		/* Descriptor */
 	__I | __D | __L,	/* Bus_Dependent_Info */
@@ -82,10 +83,10 @@ static const u_int8_t csr1212_key_id_type_map[0x30] = {
 #undef __L
 
 
-#define quads_to_bytes(_q) ((_q) * sizeof(u_int32_t))
-#define bytes_to_quads(_b) (((_b) + sizeof(u_int32_t) - 1) / sizeof(u_int32_t))
+#define quads_to_bytes(_q) ((_q) * sizeof(u32))
+#define bytes_to_quads(_b) (((_b) + sizeof(u32) - 1) / sizeof(u32))
 
-static inline void free_keyval(struct csr1212_keyval *kv)
+static void free_keyval(struct csr1212_keyval *kv)
 {
 	if ((kv->key.type == CSR1212_KV_TYPE_LEAF) &&
 	    (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM))
@@ -94,14 +95,14 @@ static inline void free_keyval(struct csr1212_keyval *kv)
 	CSR1212_FREE(kv);
 }
 
-static u_int16_t csr1212_crc16(const u_int32_t *buffer, size_t length)
+static u16 csr1212_crc16(const u32 *buffer, size_t length)
 {
 	int shift;
-	u_int32_t data;
-	u_int16_t sum, crc = 0;
+	u32 data;
+	u16 sum, crc = 0;
 
 	for (; length; length--) {
-		data = CSR1212_BE32_TO_CPU(*buffer);
+		data = be32_to_cpu(*buffer);
 		buffer++;
 		for (shift = 28; shift >= 0; shift -= 4 ) {
 			sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
@@ -110,21 +111,18 @@ static u_int16_t csr1212_crc16(const u_int32_t *buffer, size_t length)
 		crc &= 0xffff;
 	}
 
-	return CSR1212_CPU_TO_BE16(crc);
+	return cpu_to_be16(crc);
 }
 
-#if 0
-/* Microsoft computes the CRC with the bytes in reverse order.  Therefore we
- * have a special version of the CRC algorithm to account for their buggy
- * software. */
-static u_int16_t csr1212_msft_crc16(const u_int32_t *buffer, size_t length)
+/* Microsoft computes the CRC with the bytes in reverse order. */
+static u16 csr1212_msft_crc16(const u32 *buffer, size_t length)
 {
 	int shift;
-	u_int32_t data;
-	u_int16_t sum, crc = 0;
+	u32 data;
+	u16 sum, crc = 0;
 
 	for (; length; length--) {
-		data = CSR1212_LE32_TO_CPU(*buffer);
+		data = le32_to_cpu(*buffer);
 		buffer++;
 		for (shift = 28; shift >= 0; shift -= 4 ) {
 			sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
@@ -133,38 +131,35 @@ static u_int16_t csr1212_msft_crc16(const u_int32_t *buffer, size_t length)
 		crc &= 0xffff;
 	}
 
-	return CSR1212_CPU_TO_BE16(crc);
+	return cpu_to_be16(crc);
 }
-#endif
 
-static inline struct csr1212_dentry *csr1212_find_keyval(struct csr1212_keyval *dir,
-							 struct csr1212_keyval *kv)
+static struct csr1212_dentry *
+csr1212_find_keyval(struct csr1212_keyval *dir, struct csr1212_keyval *kv)
 {
 	struct csr1212_dentry *pos;
 
 	for (pos = dir->value.directory.dentries_head;
-	     pos != NULL; pos = pos->next) {
+	     pos != NULL; pos = pos->next)
 		if (pos->kv == kv)
 			return pos;
-	}
 	return NULL;
 }
 
-
-static inline struct csr1212_keyval *csr1212_find_keyval_offset(struct csr1212_keyval *kv_list,
-								u_int32_t offset)
+static struct csr1212_keyval *
+csr1212_find_keyval_offset(struct csr1212_keyval *kv_list, u32 offset)
 {
 	struct csr1212_keyval *kv;
 
-	for (kv = kv_list->next; kv && (kv != kv_list); kv = kv->next) {
+	for (kv = kv_list->next; kv && (kv != kv_list); kv = kv->next)
 		if (kv->offset == offset)
 			return kv;
-	}
 	return NULL;
 }
 
 
 /* Creation Routines */
+
 struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
 				       size_t bus_info_size, void *private)
 {
@@ -202,27 +197,17 @@ struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
 	return csr;
 }
 
-
-
 void csr1212_init_local_csr(struct csr1212_csr *csr,
-			    const u_int32_t *bus_info_data, int max_rom)
+			    const u32 *bus_info_data, int max_rom)
 {
 	static const int mr_map[] = { 4, 64, 1024, 0 };
 
-#ifdef __KERNEL__
 	BUG_ON(max_rom & ~0x3);
 	csr->max_rom = mr_map[max_rom];
-#else
-	if (max_rom & ~0x3) /* caller supplied invalid argument */
-		csr->max_rom = 0;
-	else
-		csr->max_rom = mr_map[max_rom];
-#endif
 	memcpy(csr->bus_info_data, bus_info_data, csr->bus_info_len);
 }
 
-
-static struct csr1212_keyval *csr1212_new_keyval(u_int8_t type, u_int8_t key)
+static struct csr1212_keyval *csr1212_new_keyval(u8 type, u8 key)
 {
 	struct csr1212_keyval *kv;
 
@@ -246,10 +231,11 @@ static struct csr1212_keyval *csr1212_new_keyval(u_int8_t type, u_int8_t key)
 	return kv;
 }
 
-struct csr1212_keyval *csr1212_new_immediate(u_int8_t key, u_int32_t value)
+struct csr1212_keyval *csr1212_new_immediate(u8 key, u32 value)
 {
-	struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_IMMEDIATE, key);
+	struct csr1212_keyval *kv;
 
+	kv = csr1212_new_keyval(CSR1212_KV_TYPE_IMMEDIATE, key);
 	if (!kv)
 		return NULL;
 
@@ -258,10 +244,12 @@ struct csr1212_keyval *csr1212_new_immediate(u_int8_t key, u_int32_t value)
 	return kv;
 }
 
-struct csr1212_keyval *csr1212_new_leaf(u_int8_t key, const void *data, size_t data_len)
+static struct csr1212_keyval *
+csr1212_new_leaf(u8 key, const void *data, size_t data_len)
 {
-	struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_LEAF, key);
+	struct csr1212_keyval *kv;
 
+	kv = csr1212_new_keyval(CSR1212_KV_TYPE_LEAF, key);
 	if (!kv)
 		return NULL;
 
@@ -285,10 +273,12 @@ struct csr1212_keyval *csr1212_new_leaf(u_int8_t key, const void *data, size_t d
 	return kv;
 }
 
-struct csr1212_keyval *csr1212_new_csr_offset(u_int8_t key, u_int32_t csr_offset)
+static struct csr1212_keyval *
+csr1212_new_csr_offset(u8 key, u32 csr_offset)
 {
-	struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_CSR_OFFSET, key);
+	struct csr1212_keyval *kv;
 
+	kv = csr1212_new_keyval(CSR1212_KV_TYPE_CSR_OFFSET, key);
 	if (!kv)
 		return NULL;
 
@@ -299,10 +289,11 @@ struct csr1212_keyval *csr1212_new_csr_offset(u_int8_t key, u_int32_t csr_offset
 	return kv;
 }
 
-struct csr1212_keyval *csr1212_new_directory(u_int8_t key)
+struct csr1212_keyval *csr1212_new_directory(u8 key)
 {
-	struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_DIRECTORY, key);
+	struct csr1212_keyval *kv;
 
+	kv = csr1212_new_keyval(CSR1212_KV_TYPE_DIRECTORY, key);
 	if (!kv)
 		return NULL;
 
@@ -314,43 +305,29 @@ struct csr1212_keyval *csr1212_new_directory(u_int8_t key)
 	return kv;
 }
 
-int csr1212_associate_keyval(struct csr1212_keyval *kv,
-			     struct csr1212_keyval *associate)
+void csr1212_associate_keyval(struct csr1212_keyval *kv,
+			      struct csr1212_keyval *associate)
 {
-	if (!kv || !associate)
-		return CSR1212_EINVAL;
-
-	if (kv->key.id == CSR1212_KV_ID_DESCRIPTOR ||
-	   (associate->key.id != CSR1212_KV_ID_DESCRIPTOR &&
-	    associate->key.id != CSR1212_KV_ID_DEPENDENT_INFO &&
-	    associate->key.id != CSR1212_KV_ID_EXTENDED_KEY &&
-	    associate->key.id != CSR1212_KV_ID_EXTENDED_DATA &&
-	    associate->key.id < 0x30))
-		return CSR1212_EINVAL;
-
-	if (kv->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID &&
-	   associate->key.id != CSR1212_KV_ID_EXTENDED_KEY)
-		return CSR1212_EINVAL;
-
-	if (kv->key.id == CSR1212_KV_ID_EXTENDED_KEY &&
-	   associate->key.id != CSR1212_KV_ID_EXTENDED_DATA)
-		return CSR1212_EINVAL;
-
-	if (associate->key.id == CSR1212_KV_ID_EXTENDED_KEY &&
-	   kv->key.id != CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID)
-		return CSR1212_EINVAL;
-
-	if (associate->key.id == CSR1212_KV_ID_EXTENDED_DATA &&
-	   kv->key.id != CSR1212_KV_ID_EXTENDED_KEY)
-		return CSR1212_EINVAL;
+	BUG_ON(!kv || !associate || kv->key.id == CSR1212_KV_ID_DESCRIPTOR ||
+	       (associate->key.id != CSR1212_KV_ID_DESCRIPTOR &&
+		associate->key.id != CSR1212_KV_ID_DEPENDENT_INFO &&
+		associate->key.id != CSR1212_KV_ID_EXTENDED_KEY &&
+		associate->key.id != CSR1212_KV_ID_EXTENDED_DATA &&
+		associate->key.id < 0x30) ||
+	       (kv->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID &&
+		associate->key.id != CSR1212_KV_ID_EXTENDED_KEY) ||
+	       (kv->key.id == CSR1212_KV_ID_EXTENDED_KEY &&
+		associate->key.id != CSR1212_KV_ID_EXTENDED_DATA) ||
+	       (associate->key.id == CSR1212_KV_ID_EXTENDED_KEY &&
+		kv->key.id != CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) ||
+	       (associate->key.id == CSR1212_KV_ID_EXTENDED_DATA &&
+		kv->key.id != CSR1212_KV_ID_EXTENDED_KEY));
 
 	if (kv->associate)
 		csr1212_release_keyval(kv->associate);
 
 	associate->refcnt++;
 	kv->associate = associate;
-
-	return CSR1212_SUCCESS;
 }
 
 int csr1212_attach_keyval_to_directory(struct csr1212_keyval *dir,
@@ -358,12 +335,11 @@ int csr1212_attach_keyval_to_directory(struct csr1212_keyval *dir,
 {
 	struct csr1212_dentry *dentry;
 
-	if (!kv || !dir || dir->key.type != CSR1212_KV_TYPE_DIRECTORY)
-		return CSR1212_EINVAL;
+	BUG_ON(!kv || !dir || dir->key.type != CSR1212_KV_TYPE_DIRECTORY);
 
 	dentry = CSR1212_MALLOC(sizeof(*dentry));
 	if (!dentry)
-		return CSR1212_ENOMEM;
+		return -ENOMEM;
 
 	dentry->kv = kv;
 
@@ -382,66 +358,22 @@ int csr1212_attach_keyval_to_directory(struct csr1212_keyval *dir,
 	return CSR1212_SUCCESS;
 }
 
-struct csr1212_keyval *csr1212_new_extended_immediate(u_int32_t spec, u_int32_t key,
-						      u_int32_t value)
-{
-	struct csr1212_keyval *kvs, *kvk, *kvv;
-
-	kvs = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID, spec);
-	kvk = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY, key);
-	kvv = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_DATA, value);
-
-	if (!kvs || !kvk || !kvv) {
-		if (kvs)
-			free_keyval(kvs);
-		if (kvk)
-			free_keyval(kvk);
-		if (kvv)
-			free_keyval(kvv);
-		return NULL;
-	}
-
-	/* Don't keep a local reference to the extended key or value. */
-	kvk->refcnt = 0;
-	kvv->refcnt = 0;
-
-	csr1212_associate_keyval(kvk, kvv);
-	csr1212_associate_keyval(kvs, kvk);
-
-	return kvs;
-}
-
-struct csr1212_keyval *csr1212_new_extended_leaf(u_int32_t spec, u_int32_t key,
-						 const void *data, size_t data_len)
-{
-	struct csr1212_keyval *kvs, *kvk, *kvv;
-
-	kvs = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID, spec);
-	kvk = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY, key);
-	kvv = csr1212_new_leaf(CSR1212_KV_ID_EXTENDED_DATA, data, data_len);
-
-	if (!kvs || !kvk || !kvv) {
-		if (kvs)
-			free_keyval(kvs);
-		if (kvk)
-			free_keyval(kvk);
-		if (kvv)
-			free_keyval(kvv);
-		return NULL;
-	}
-
-	/* Don't keep a local reference to the extended key or value. */
-	kvk->refcnt = 0;
-	kvv->refcnt = 0;
-
-	csr1212_associate_keyval(kvk, kvv);
-	csr1212_associate_keyval(kvs, kvk);
-
-	return kvs;
-}
-
-struct csr1212_keyval *csr1212_new_descriptor_leaf(u_int8_t dtype, u_int32_t specifier_id,
-						   const void *data, size_t data_len)
+#define CSR1212_DESCRIPTOR_LEAF_DATA(kv) \
+	(&((kv)->value.leaf.data[1]))
+
+#define CSR1212_DESCRIPTOR_LEAF_SET_TYPE(kv, type) \
+	((kv)->value.leaf.data[0] = \
+	 cpu_to_be32(CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) | \
+		     ((type) << CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)))
+#define CSR1212_DESCRIPTOR_LEAF_SET_SPECIFIER_ID(kv, spec_id) \
+	((kv)->value.leaf.data[0] = \
+	 cpu_to_be32((CSR1212_DESCRIPTOR_LEAF_TYPE(kv) << \
+		      CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT) | \
+		     ((spec_id) & CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)))
+
+static struct csr1212_keyval *
+csr1212_new_descriptor_leaf(u8 dtype, u32 specifier_id,
+			    const void *data, size_t data_len)
 {
 	struct csr1212_keyval *kv;
 
@@ -453,197 +385,72 @@ struct csr1212_keyval *csr1212_new_descriptor_leaf(u_int8_t dtype, u_int32_t spe
 	CSR1212_DESCRIPTOR_LEAF_SET_TYPE(kv, dtype);
 	CSR1212_DESCRIPTOR_LEAF_SET_SPECIFIER_ID(kv, specifier_id);
 
-	if (data) {
+	if (data)
 		memcpy(CSR1212_DESCRIPTOR_LEAF_DATA(kv), data, data_len);
-	}
-
-	return kv;
-}
-
-
-struct csr1212_keyval *csr1212_new_textual_descriptor_leaf(u_int8_t cwidth,
-							   u_int16_t cset,
-							   u_int16_t language,
-							   const void *data,
-							   size_t data_len)
-{
-	struct csr1212_keyval *kv;
-	char *lstr;
-
-	kv = csr1212_new_descriptor_leaf(0, 0, NULL, data_len +
-					 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD);
-	if (!kv)
-		return NULL;
-
-	CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_WIDTH(kv, cwidth);
-	CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_CHAR_SET(kv, cset);
-	CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language);
-
-	lstr = (char*)CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(kv);
-
-	/* make sure last quadlet is zeroed out */
-	*((u_int32_t*)&(lstr[(data_len - 1) & ~0x3])) = 0;
-
-	/* don't copy the NUL terminator */
-	memcpy(lstr, data, data_len);
 
 	return kv;
 }
 
+/* Check if string conforms to minimal ASCII as per IEEE 1212 clause 7.4 */
 static int csr1212_check_minimal_ascii(const char *s)
 {
 	static const char minimal_ascii_table[] = {
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07,
-		0x00, 0x00, 0x0a, 0x00, 0x0C, 0x0D, 0x00, 0x00,
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-		0x20, 0x21, 0x22, 0x00, 0x00, 0x25, 0x26, 0x27,
-		0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
-		0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
-		0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
-		0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
-		0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
-		0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
-		0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x5f,
-		0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
-		0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
-		0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
-		0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00,
+					/*  1   2   4   8  16  32  64  128 */
+		128,			/* --, --, --, --, --, --, --, 07, */
+		4 + 16 + 32,		/* --, --, 0a, --, 0C, 0D, --, --, */
+		0,			/* --, --, --, --, --, --, --, --, */
+		0,			/* --, --, --, --, --, --, --, --, */
+		255 - 8 - 16,		/* 20, 21, 22, --, --, 25, 26, 27, */
+		255,			/* 28, 29, 2a, 2b, 2c, 2d, 2e, 2f, */
+		255,			/* 30, 31, 32, 33, 34, 35, 36, 37, */
+		255,			/* 38, 39, 3a, 3b, 3c, 3d, 3e, 3f, */
+		255,			/* 40, 41, 42, 43, 44, 45, 46, 47, */
+		255,			/* 48, 49, 4a, 4b, 4c, 4d, 4e, 4f, */
+		255,			/* 50, 51, 52, 53, 54, 55, 56, 57, */
+		1 + 2 + 4 + 128,	/* 58, 59, 5a, --, --, --, --, 5f, */
+		255 - 1,		/* --, 61, 62, 63, 64, 65, 66, 67, */
+		255,			/* 68, 69, 6a, 6b, 6c, 6d, 6e, 6f, */
+		255,			/* 70, 71, 72, 73, 74, 75, 76, 77, */
+		1 + 2 + 4,		/* 78, 79, 7a, --, --, --, --, --, */
 	};
+	int i, j;
+
 	for (; *s; s++) {
-		if (minimal_ascii_table[*s & 0x7F] != *s)
-			return -1; /* failed */
+		i = *s >> 3;		/*  i = *s / 8;		*/
+		j = 1 << (*s & 3);	/*  j = 1 << (*s % 8);	*/
+
+		if (i >= ARRAY_SIZE(minimal_ascii_table) ||
+		    !(minimal_ascii_table[i] & j))
+			return -EINVAL;
 	}
-	/* String conforms to minimal-ascii, as specified by IEEE 1212,
-	 * par. 7.4 */
 	return 0;
 }
 
+/* IEEE 1212 clause 7.5.4.1 textual descriptors (English, minimal ASCII) */
 struct csr1212_keyval *csr1212_new_string_descriptor_leaf(const char *s)
 {
-	/* Check if string conform to minimal_ascii format */
-	if (csr1212_check_minimal_ascii(s))
-		return NULL;
-
-	/* IEEE 1212, par. 7.5.4.1  Textual descriptors (minimal ASCII) */
-	return csr1212_new_textual_descriptor_leaf(0, 0, 0, s, strlen(s));
-}
-
-struct csr1212_keyval *csr1212_new_icon_descriptor_leaf(u_int32_t version,
-							u_int8_t palette_depth,
-							u_int8_t color_space,
-							u_int16_t language,
-							u_int16_t hscan,
-							u_int16_t vscan,
-							u_int32_t *palette,
-							u_int32_t *pixels)
-{
-	static const int pd[4] = { 0, 4, 16, 256 };
-	static const int cs[16] = { 4, 2 };
 	struct csr1212_keyval *kv;
-	int palette_size;
-	int pixel_size = (hscan * vscan + 3) & ~0x3;
+	u32 *text;
+	size_t str_len, quads;
 
-	if (!pixels || (!palette && palette_depth) ||
-	    (palette_depth & ~0x3) || (color_space & ~0xf))
+	if (!s || !*s || csr1212_check_minimal_ascii(s))
 		return NULL;
 
-	palette_size = pd[palette_depth] * cs[color_space];
-
-	kv = csr1212_new_descriptor_leaf(1, 0, NULL,
-					 palette_size + pixel_size +
-					 CSR1212_ICON_DESCRIPTOR_LEAF_OVERHEAD);
+	str_len = strlen(s);
+	quads = bytes_to_quads(str_len);
+	kv = csr1212_new_descriptor_leaf(0, 0, NULL, quads_to_bytes(quads) +
+				      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD);
 	if (!kv)
 		return NULL;
 
-	CSR1212_ICON_DESCRIPTOR_LEAF_SET_VERSION(kv, version);
-	CSR1212_ICON_DESCRIPTOR_LEAF_SET_PALETTE_DEPTH(kv, palette_depth);
-	CSR1212_ICON_DESCRIPTOR_LEAF_SET_COLOR_SPACE(kv, color_space);
-	CSR1212_ICON_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language);
-	CSR1212_ICON_DESCRIPTOR_LEAF_SET_HSCAN(kv, hscan);
-	CSR1212_ICON_DESCRIPTOR_LEAF_SET_VSCAN(kv, vscan);
-
-	if (palette_size)
-		memcpy(CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE(kv), palette,
-		       palette_size);
-
-	memcpy(CSR1212_ICON_DESCRIPTOR_LEAF_PIXELS(kv), pixels, pixel_size);
-
-	return kv;
-}
-
-struct csr1212_keyval *csr1212_new_modifiable_descriptor_leaf(u_int16_t max_size,
-							      u_int64_t address)
-{
-	struct csr1212_keyval *kv;
-
-	/* IEEE 1212, par. 7.5.4.3  Modifiable descriptors */
-	kv = csr1212_new_leaf(CSR1212_KV_ID_MODIFIABLE_DESCRIPTOR, NULL, sizeof(u_int64_t));
-	if(!kv)
-		return NULL;
-
-	CSR1212_MODIFIABLE_DESCRIPTOR_SET_MAX_SIZE(kv, max_size);
-	CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_HI(kv, address);
-	CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_LO(kv, address);
+	kv->value.leaf.data[1] = 0;	/* width, character_set, language */
+	text = CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(kv);
+	text[quads - 1] = 0;		/* padding */
+	memcpy(text, s, str_len);
 
 	return kv;
 }
 
-static int csr1212_check_keyword(const char *s)
-{
-	for (; *s; s++) {
-
-		if (('A' <= *s) && (*s <= 'Z'))
-			continue;
-		if (('0' <= *s) && (*s <= '9'))
-			continue;
-		if (*s == '-')
-			continue;
-
-		return -1; /* failed */
-	}
-	/* String conforms to keyword, as specified by IEEE 1212,
-	 * par. 7.6.5 */
-	return CSR1212_SUCCESS;
-}
-
-struct csr1212_keyval *csr1212_new_keyword_leaf(int strc, const char *strv[])
-{
-	struct csr1212_keyval *kv;
-	char *buffer;
-	int i, data_len = 0;
-
-	/* Check all keywords to see if they conform to restrictions:
-	 * Only the following characters is allowed ['A'..'Z','0'..'9','-']
-	 * Each word is zero-terminated.
-	 * Also calculate the total length of the keywords.
-	 */
-	for (i = 0; i < strc; i++) {
-		if (!strv[i] || csr1212_check_keyword(strv[i])) {
-			return NULL;
-		}
-		data_len += strlen(strv[i]) + 1; /* Add zero-termination char. */
-	}
-
-	/* IEEE 1212, par. 7.6.5 Keyword leaves */
-	kv = csr1212_new_leaf(CSR1212_KV_ID_KEYWORD, NULL, data_len);
-	if (!kv)
-		return NULL;
-
-	buffer = (char *)kv->value.leaf.data;
-
-	/* make sure last quadlet is zeroed out */
-	*((u_int32_t*)&(buffer[(data_len - 1) & ~0x3])) = 0;
-
-	/* Copy keyword(s) into leaf data buffer */
-	for (i = 0; i < strc; i++) {
-		int len = strlen(strv[i]) + 1;
-		memcpy(buffer, strv[i], len);
-		buffer += len;
-	}
-	return kv;
-}
-
 
 /* Destruction Routines */
 
@@ -674,23 +481,12 @@ void csr1212_detach_keyval_from_directory(struct csr1212_keyval *dir,
 	csr1212_release_keyval(kv);
 }
 
-
-void csr1212_disassociate_keyval(struct csr1212_keyval *kv)
-{
-	if (kv->associate) {
-		csr1212_release_keyval(kv->associate);
-	}
-
-	kv->associate = NULL;
-}
-
-
 /* This function is used to free the memory taken by a keyval.  If the given
  * keyval is a directory type, then any keyvals contained in that directory
  * will be destroyed as well if their respective refcnts are 0.  By means of
  * list manipulation, this routine will descend a directory structure in a
  * non-recursive manner. */
-void _csr1212_destroy_keyval(struct csr1212_keyval *kv)
+static void csr1212_destroy_keyval(struct csr1212_keyval *kv)
 {
 	struct csr1212_keyval *k, *a;
 	struct csr1212_dentry dentry;
@@ -715,11 +511,13 @@ void _csr1212_destroy_keyval(struct csr1212_keyval *kv)
 			a = k->associate;
 
 			if (k->key.type == CSR1212_KV_TYPE_DIRECTORY) {
-				/* If the current entry is a directory, then move all
+				/* If the current entry is a directory, move all
 				 * the entries to the destruction list. */
 				if (k->value.directory.dentries_head) {
-					tail->next = k->value.directory.dentries_head;
-					k->value.directory.dentries_head->prev = tail;
+					tail->next =
+					    k->value.directory.dentries_head;
+					k->value.directory.dentries_head->prev =
+					    tail;
 					tail = k->value.directory.dentries_tail;
 				}
 			}
@@ -729,15 +527,22 @@ void _csr1212_destroy_keyval(struct csr1212_keyval *kv)
 
 		head = head->next;
 		if (head) {
-			if (head->prev && head->prev != &dentry) {
+			if (head->prev && head->prev != &dentry)
 				CSR1212_FREE(head->prev);
-			}
 			head->prev = NULL;
-		} else if (tail != &dentry)
+		} else if (tail != &dentry) {
 			CSR1212_FREE(tail);
+		}
 	}
 }
 
+void csr1212_release_keyval(struct csr1212_keyval *kv)
+{
+	if (kv->refcnt > 1)
+		kv->refcnt--;
+	else
+		csr1212_destroy_keyval(kv);
+}
 
 void csr1212_destroy_csr(struct csr1212_csr *csr)
 {
@@ -763,49 +568,51 @@ void csr1212_destroy_csr(struct csr1212_csr *csr)
 }
 
 
-
 /* CSR Image Creation */
 
 static int csr1212_append_new_cache(struct csr1212_csr *csr, size_t romsize)
 {
 	struct csr1212_csr_rom_cache *cache;
-	u_int64_t csr_addr;
+	u64 csr_addr;
 
-	if (!csr || !csr->ops || !csr->ops->allocate_addr_range ||
-	    !csr->ops->release_addr || csr->max_rom < 1)
-		return CSR1212_EINVAL;
+	BUG_ON(!csr || !csr->ops || !csr->ops->allocate_addr_range ||
+	       !csr->ops->release_addr || csr->max_rom < 1);
 
 	/* ROM size must be a multiple of csr->max_rom */
 	romsize = (romsize + (csr->max_rom - 1)) & ~(csr->max_rom - 1);
 
-	csr_addr = csr->ops->allocate_addr_range(romsize, csr->max_rom, csr->private);
-	if (csr_addr == CSR1212_INVALID_ADDR_SPACE) {
-		return CSR1212_ENOMEM;
-	}
+	csr_addr = csr->ops->allocate_addr_range(romsize, csr->max_rom,
+						 csr->private);
+	if (csr_addr == CSR1212_INVALID_ADDR_SPACE)
+		return -ENOMEM;
+
 	if (csr_addr < CSR1212_REGISTER_SPACE_BASE) {
 		/* Invalid address returned from allocate_addr_range(). */
 		csr->ops->release_addr(csr_addr, csr->private);
-		return CSR1212_ENOMEM;
+		return -ENOMEM;
 	}
 
-	cache = csr1212_rom_cache_malloc(csr_addr - CSR1212_REGISTER_SPACE_BASE, romsize);
+	cache = csr1212_rom_cache_malloc(csr_addr - CSR1212_REGISTER_SPACE_BASE,
+					 romsize);
 	if (!cache) {
 		csr->ops->release_addr(csr_addr, csr->private);
-		return CSR1212_ENOMEM;
+		return -ENOMEM;
 	}
 
-	cache->ext_rom = csr1212_new_keyval(CSR1212_KV_TYPE_LEAF, CSR1212_KV_ID_EXTENDED_ROM);
+	cache->ext_rom = csr1212_new_keyval(CSR1212_KV_TYPE_LEAF,
+					    CSR1212_KV_ID_EXTENDED_ROM);
 	if (!cache->ext_rom) {
 		csr->ops->release_addr(csr_addr, csr->private);
 		CSR1212_FREE(cache);
-		return CSR1212_ENOMEM;
+		return -ENOMEM;
 	}
 
-	if (csr1212_attach_keyval_to_directory(csr->root_kv, cache->ext_rom) != CSR1212_SUCCESS) {
+	if (csr1212_attach_keyval_to_directory(csr->root_kv, cache->ext_rom) !=
+	    CSR1212_SUCCESS) {
 		csr1212_release_keyval(cache->ext_rom);
 		csr->ops->release_addr(csr_addr, csr->private);
 		CSR1212_FREE(cache);
-		return CSR1212_ENOMEM;
+		return -ENOMEM;
 	}
 	cache->ext_rom->offset = csr_addr - CSR1212_REGISTER_SPACE_BASE;
 	cache->ext_rom->value.leaf.len = -1;
@@ -818,8 +625,8 @@ static int csr1212_append_new_cache(struct csr1212_csr *csr, size_t romsize)
 	return CSR1212_SUCCESS;
 }
 
-static inline void csr1212_remove_cache(struct csr1212_csr *csr,
-					struct csr1212_csr_rom_cache *cache)
+static void csr1212_remove_cache(struct csr1212_csr *csr,
+				 struct csr1212_csr_rom_cache *cache)
 {
 	if (csr->cache_head == cache)
 		csr->cache_head = cache->next;
@@ -832,7 +639,8 @@ static inline void csr1212_remove_cache(struct csr1212_csr *csr,
 		cache->next->prev = cache->prev;
 
 	if (cache->ext_rom) {
-		csr1212_detach_keyval_from_directory(csr->root_kv, cache->ext_rom);
+		csr1212_detach_keyval_from_directory(csr->root_kv,
+						     cache->ext_rom);
 		csr1212_release_keyval(cache->ext_rom);
 	}
 
@@ -852,28 +660,29 @@ static int csr1212_generate_layout_subdir(struct csr1212_keyval *dir,
 	     dentry = dentry->next) {
 		for (dkv = dentry->kv; dkv; dkv = dkv->associate) {
 			/* Special Case: Extended Key Specifier_ID */
-			if (dkv->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) {
-				if (last_extkey_spec == NULL) {
+			if (dkv->key.id ==
+			    CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) {
+				if (last_extkey_spec == NULL)
 					last_extkey_spec = dkv;
-				} else if (dkv->value.immediate != last_extkey_spec->value.immediate) {
+				else if (dkv->value.immediate !=
+					 last_extkey_spec->value.immediate)
 					last_extkey_spec = dkv;
-				} else {
+				else
 					continue;
-				}
 			/* Special Case: Extended Key */
 			} else if (dkv->key.id == CSR1212_KV_ID_EXTENDED_KEY) {
-				if (last_extkey == NULL) {
+				if (last_extkey == NULL)
 					last_extkey = dkv;
-				} else if (dkv->value.immediate != last_extkey->value.immediate) {
+				else if (dkv->value.immediate !=
+					 last_extkey->value.immediate)
 					last_extkey = dkv;
-				} else {
+				else
 					continue;
-				}
 			}
 
 			num_entries += 1;
 
-			switch(dkv->key.type) {
+			switch (dkv->key.type) {
 			default:
 			case CSR1212_KV_TYPE_IMMEDIATE:
 			case CSR1212_KV_TYPE_CSR_OFFSET:
@@ -891,8 +700,9 @@ static int csr1212_generate_layout_subdir(struct csr1212_keyval *dir,
 				/* Special case: Extended ROM leafs */
 				if (dkv->key.id == CSR1212_KV_ID_EXTENDED_ROM) {
 					dkv->value.leaf.len = -1;
-					/* Don't add Extended ROM leafs in the layout list,
-					 * they are handled differently. */
+					/* Don't add Extended ROM leafs in the
+					 * layout list, they are handled
+					 * differently. */
 					break;
 				}
 
@@ -908,20 +718,21 @@ static int csr1212_generate_layout_subdir(struct csr1212_keyval *dir,
 	return num_entries;
 }
 
-size_t csr1212_generate_layout_order(struct csr1212_keyval *kv)
+static size_t csr1212_generate_layout_order(struct csr1212_keyval *kv)
 {
 	struct csr1212_keyval *ltail = kv;
 	size_t agg_size = 0;
 
-	while(kv) {
-		switch(kv->key.type) {
+	while (kv) {
+		switch (kv->key.type) {
 		case CSR1212_KV_TYPE_LEAF:
 			/* Add 1 quadlet for crc/len field */
 			agg_size += kv->value.leaf.len + 1;
 			break;
 
 		case CSR1212_KV_TYPE_DIRECTORY:
-			kv->value.directory.len = csr1212_generate_layout_subdir(kv, &ltail);
+			kv->value.directory.len =
+				csr1212_generate_layout_subdir(kv, &ltail);
 			/* Add 1 quadlet for crc/len field */
 			agg_size += kv->value.directory.len + 1;
 			break;
@@ -931,9 +742,9 @@ size_t csr1212_generate_layout_order(struct csr1212_keyval *kv)
 	return quads_to_bytes(agg_size);
 }
 
-struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *cache,
-						  struct csr1212_keyval *start_kv,
-						  int start_pos)
+static struct csr1212_keyval *
+csr1212_generate_positions(struct csr1212_csr_rom_cache *cache,
+			   struct csr1212_keyval *start_kv, int start_pos)
 {
 	struct csr1212_keyval *kv = start_kv;
 	struct csr1212_keyval *okv = start_kv;
@@ -942,13 +753,12 @@ struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *
 
 	cache->layout_head = kv;
 
-	while(kv && pos < cache->size) {
+	while (kv && pos < cache->size) {
 		/* Special case: Extended ROM leafs */
-		if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM) {
+		if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM)
 			kv->offset = cache->offset + pos;
-		}
 
-		switch(kv->key.type) {
+		switch (kv->key.type) {
 		case CSR1212_KV_TYPE_LEAF:
 			kv_len = kv->value.leaf.len;
 			break;
@@ -959,6 +769,7 @@ struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *
 
 		default:
 			/* Should never get here */
+			WARN_ON(1);
 			break;
 		}
 
@@ -972,46 +783,55 @@ struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *
 	}
 
 	cache->layout_tail = okv;
-	cache->len = (okv->offset - cache->offset) + quads_to_bytes(okv_len + 1);
+	cache->len = okv->offset - cache->offset + quads_to_bytes(okv_len + 1);
 
 	return kv;
 }
 
-static void csr1212_generate_tree_subdir(struct csr1212_keyval *dir,
-					 u_int32_t *data_buffer)
+#define CSR1212_KV_KEY_SHIFT		24
+#define CSR1212_KV_KEY_TYPE_SHIFT	6
+#define CSR1212_KV_KEY_ID_MASK		0x3f
+#define CSR1212_KV_KEY_TYPE_MASK	0x3	/* after shift */
+
+static void
+csr1212_generate_tree_subdir(struct csr1212_keyval *dir, u32 *data_buffer)
 {
 	struct csr1212_dentry *dentry;
 	struct csr1212_keyval *last_extkey_spec = NULL;
 	struct csr1212_keyval *last_extkey = NULL;
 	int index = 0;
 
-	for (dentry = dir->value.directory.dentries_head; dentry; dentry = dentry->next) {
+	for (dentry = dir->value.directory.dentries_head;
+	     dentry;
+	     dentry = dentry->next) {
 		struct csr1212_keyval *a;
 
 		for (a = dentry->kv; a; a = a->associate) {
-			u_int32_t value = 0;
+			u32 value = 0;
 
 			/* Special Case: Extended Key Specifier_ID */
-			if (a->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) {
-				if (last_extkey_spec == NULL) {
+			if (a->key.id ==
+			    CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) {
+				if (last_extkey_spec == NULL)
 					last_extkey_spec = a;
-				} else if (a->value.immediate != last_extkey_spec->value.immediate) {
+				else if (a->value.immediate !=
+					 last_extkey_spec->value.immediate)
 					last_extkey_spec = a;
-				} else {
+				else
 					continue;
-				}
+
 			/* Special Case: Extended Key */
 			} else if (a->key.id == CSR1212_KV_ID_EXTENDED_KEY) {
-				if (last_extkey == NULL) {
+				if (last_extkey == NULL)
 					last_extkey = a;
-				} else if (a->value.immediate != last_extkey->value.immediate) {
+				else if (a->value.immediate !=
+					 last_extkey->value.immediate)
 					last_extkey = a;
-				} else {
+				else
 					continue;
-				}
 			}
 
-			switch(a->key.type) {
+			switch (a->key.type) {
 			case CSR1212_KV_TYPE_IMMEDIATE:
 				value = a->value.immediate;
 				break;
@@ -1030,32 +850,46 @@ static void csr1212_generate_tree_subdir(struct csr1212_keyval *dir,
 				break;
 			default:
 				/* Should never get here */
-				break; /* GDB breakpoint */
+				WARN_ON(1);
+				break;
 			}
 
-			value |= (a->key.id & CSR1212_KV_KEY_ID_MASK) << CSR1212_KV_KEY_SHIFT;
+			value |= (a->key.id & CSR1212_KV_KEY_ID_MASK) <<
+				 CSR1212_KV_KEY_SHIFT;
 			value |= (a->key.type & CSR1212_KV_KEY_TYPE_MASK) <<
-				(CSR1212_KV_KEY_SHIFT + CSR1212_KV_KEY_TYPE_SHIFT);
-			data_buffer[index] = CSR1212_CPU_TO_BE32(value);
+				 (CSR1212_KV_KEY_SHIFT +
+				  CSR1212_KV_KEY_TYPE_SHIFT);
+			data_buffer[index] = cpu_to_be32(value);
 			index++;
 		}
 	}
 }
 
-void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache)
+struct csr1212_keyval_img {
+	u16 length;
+	u16 crc;
+
+	/* Must be last */
+	u32 data[0];	/* older gcc can't handle [] which is standard */
+};
+
+static void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache)
 {
 	struct csr1212_keyval *kv, *nkv;
 	struct csr1212_keyval_img *kvi;
 
-	for (kv = cache->layout_head; kv != cache->layout_tail->next; kv = nkv) {
-		kvi = (struct csr1212_keyval_img *)
-			(cache->data + bytes_to_quads(kv->offset - cache->offset));
-		switch(kv->key.type) {
+	for (kv = cache->layout_head;
+	     kv != cache->layout_tail->next;
+	     kv = nkv) {
+		kvi = (struct csr1212_keyval_img *)(cache->data +
+				bytes_to_quads(kv->offset - cache->offset));
+		switch (kv->key.type) {
 		default:
 		case CSR1212_KV_TYPE_IMMEDIATE:
 		case CSR1212_KV_TYPE_CSR_OFFSET:
 			/* Should never get here */
-			break; /* GDB breakpoint */
+			WARN_ON(1);
+			break;
 
 		case CSR1212_KV_TYPE_LEAF:
 			/* Don't copy over Extended ROM areas, they are
@@ -1064,15 +898,16 @@ void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache)
 				memcpy(kvi->data, kv->value.leaf.data,
 				       quads_to_bytes(kv->value.leaf.len));
 
-			kvi->length = CSR1212_CPU_TO_BE16(kv->value.leaf.len);
+			kvi->length = cpu_to_be16(kv->value.leaf.len);
 			kvi->crc = csr1212_crc16(kvi->data, kv->value.leaf.len);
 			break;
 
 		case CSR1212_KV_TYPE_DIRECTORY:
 			csr1212_generate_tree_subdir(kv, kvi->data);
 
-			kvi->length = CSR1212_CPU_TO_BE16(kv->value.directory.len);
-			kvi->crc = csr1212_crc16(kvi->data, kv->value.directory.len);
+			kvi->length = cpu_to_be16(kv->value.directory.len);
+			kvi->crc = csr1212_crc16(kvi->data,
+						 kv->value.directory.len);
 			break;
 		}
 
@@ -1086,6 +921,10 @@ void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache)
 	}
 }
 
+/* This size is arbitrarily chosen.
+ * The struct overhead is subtracted for more economic allocations. */
+#define CSR1212_EXTENDED_ROM_SIZE (2048 - sizeof(struct csr1212_csr_rom_cache))
+
 int csr1212_generate_csr_image(struct csr1212_csr *csr)
 {
 	struct csr1212_bus_info_block_img *bi;
@@ -1095,8 +934,7 @@ int csr1212_generate_csr_image(struct csr1212_csr *csr)
 	int ret;
 	int init_offset;
 
-	if (!csr)
-		return CSR1212_EINVAL;
+	BUG_ON(!csr);
 
 	cache = csr->cache_head;
 
@@ -1113,18 +951,21 @@ int csr1212_generate_csr_image(struct csr1212_csr *csr)
 
 	init_offset = csr->bus_info_len;
 
-	for (kv = csr->root_kv, cache = csr->cache_head; kv; cache = cache->next) {
+	for (kv = csr->root_kv, cache = csr->cache_head;
+	     kv;
+	     cache = cache->next) {
 		if (!cache) {
 			/* Estimate approximate number of additional cache
 			 * regions needed (it assumes that the cache holding
 			 * the first 1K Config ROM space always exists). */
 			int est_c = agg_size / (CSR1212_EXTENDED_ROM_SIZE -
-						(2 * sizeof(u_int32_t))) + 1;
+						(2 * sizeof(u32))) + 1;
 
 			/* Add additional cache regions, extras will be
 			 * removed later */
 			for (; est_c; est_c--) {
-				ret = csr1212_append_new_cache(csr, CSR1212_EXTENDED_ROM_SIZE);
+				ret = csr1212_append_new_cache(csr,
+						CSR1212_EXTENDED_ROM_SIZE);
 				if (ret != CSR1212_SUCCESS)
 					return ret;
 			}
@@ -1136,7 +977,7 @@ int csr1212_generate_csr_image(struct csr1212_csr *csr)
 		}
 		kv = csr1212_generate_positions(cache, kv, init_offset);
 		agg_size -= cache->len;
-		init_offset = sizeof(u_int32_t);
+		init_offset = sizeof(u32);
 	}
 
 	/* Remove unused, excess cache regions */
@@ -1149,15 +990,14 @@ int csr1212_generate_csr_image(struct csr1212_csr *csr)
 
 	/* Go through the list backward so that when done, the correct CRC
 	 * will be calculated for the Extended ROM areas. */
-	for(cache = csr->cache_tail; cache; cache = cache->prev) {
+	for (cache = csr->cache_tail; cache; cache = cache->prev) {
 		/* Only Extended ROM caches should have this set. */
 		if (cache->ext_rom) {
 			int leaf_size;
 
 			/* Make sure the Extended ROM leaf is a multiple of
 			 * max_rom in size. */
-			if (csr->max_rom < 1)
-				return CSR1212_EINVAL;
+			BUG_ON(csr->max_rom < 1);
 			leaf_size = (cache->len + (csr->max_rom - 1)) &
 				~(csr->max_rom - 1);
 
@@ -1166,7 +1006,7 @@ int csr1212_generate_csr_image(struct csr1212_csr *csr)
 			       leaf_size - cache->len);
 
 			/* Subtract leaf header */
-			leaf_size -= sizeof(u_int32_t);
+			leaf_size -= sizeof(u32);
 
 			/* Update the Extended ROM leaf length */
 			cache->ext_rom->value.leaf.len =
@@ -1184,33 +1024,31 @@ int csr1212_generate_csr_image(struct csr1212_csr *csr)
 			/* Set the length and CRC of the extended ROM. */
 			struct csr1212_keyval_img *kvi =
 				(struct csr1212_keyval_img*)cache->data;
+			u16 len = bytes_to_quads(cache->len) - 1;
 
-			kvi->length = CSR1212_CPU_TO_BE16(bytes_to_quads(cache->len) - 1);
-			kvi->crc = csr1212_crc16(kvi->data,
-						 bytes_to_quads(cache->len) - 1);
-
+			kvi->length = cpu_to_be16(len);
+			kvi->crc = csr1212_crc16(kvi->data, len);
 		}
 	}
 
 	return CSR1212_SUCCESS;
 }
 
-int csr1212_read(struct csr1212_csr *csr, u_int32_t offset, void *buffer, u_int32_t len)
+int csr1212_read(struct csr1212_csr *csr, u32 offset, void *buffer, u32 len)
 {
 	struct csr1212_csr_rom_cache *cache;
 
-	for (cache = csr->cache_head; cache; cache = cache->next) {
+	for (cache = csr->cache_head; cache; cache = cache->next)
 		if (offset >= cache->offset &&
 		    (offset + len) <= (cache->offset + cache->size)) {
-			memcpy(buffer,
-			       &cache->data[bytes_to_quads(offset - cache->offset)],
+			memcpy(buffer, &cache->data[
+					bytes_to_quads(offset - cache->offset)],
 			       len);
 			return CSR1212_SUCCESS;
 		}
-	}
-	return CSR1212_ENOENT;
-}
 
+	return -ENOENT;
+}
 
 
 /* Parse a chunk of data as a Config ROM */
@@ -1227,46 +1065,43 @@ static int csr1212_parse_bus_info_block(struct csr1212_csr *csr)
 	 * Unfortunately, many IEEE 1394 devices do not abide by that, so the
 	 * bus info block will be read 1 quadlet at a time.  The rest of the
 	 * ConfigROM will be read according to the max_rom field. */
-	for (i = 0; i < csr->bus_info_len; i += sizeof(csr1212_quad_t)) {
+	for (i = 0; i < csr->bus_info_len; i += sizeof(u32)) {
 		ret = csr->ops->bus_read(csr, CSR1212_CONFIG_ROM_SPACE_BASE + i,
-					 sizeof(csr1212_quad_t),
-					 &csr->cache_head->data[bytes_to_quads(i)],
-					 csr->private);
+			sizeof(u32), &csr->cache_head->data[bytes_to_quads(i)],
+			csr->private);
 		if (ret != CSR1212_SUCCESS)
 			return ret;
 
 		/* check ROM header's info_length */
 		if (i == 0 &&
-		    CSR1212_BE32_TO_CPU(csr->cache_head->data[0]) >> 24 !=
+		    be32_to_cpu(csr->cache_head->data[0]) >> 24 !=
 		    bytes_to_quads(csr->bus_info_len) - 1)
-			return CSR1212_EINVAL;
+			return -EINVAL;
 	}
 
 	bi = (struct csr1212_bus_info_block_img*)csr->cache_head->data;
 	csr->crc_len = quads_to_bytes(bi->crc_length);
 
-	/* IEEE 1212 recommends that crc_len be equal to bus_info_len, but that is not
-	 * always the case, so read the rest of the crc area 1 quadlet at a time. */
-	for (i = csr->bus_info_len; i <= csr->crc_len; i += sizeof(csr1212_quad_t)) {
+	/* IEEE 1212 recommends that crc_len be equal to bus_info_len, but that
+	 * is not always the case, so read the rest of the crc area 1 quadlet at
+	 * a time. */
+	for (i = csr->bus_info_len; i <= csr->crc_len; i += sizeof(u32)) {
 		ret = csr->ops->bus_read(csr, CSR1212_CONFIG_ROM_SPACE_BASE + i,
-					 sizeof(csr1212_quad_t),
-					 &csr->cache_head->data[bytes_to_quads(i)],
-					 csr->private);
+			sizeof(u32), &csr->cache_head->data[bytes_to_quads(i)],
+			csr->private);
 		if (ret != CSR1212_SUCCESS)
 			return ret;
 	}
 
-#if 0
-	/* Apparently there are too many differnt wrong implementations of the
-	 * CRC algorithm that verifying them is moot. */
+	/* Apparently there are many different wrong implementations of the CRC
+	 * algorithm.  We don't fail, we just warn. */
 	if ((csr1212_crc16(bi->data, bi->crc_length) != bi->crc) &&
 	    (csr1212_msft_crc16(bi->data, bi->crc_length) != bi->crc))
-		return CSR1212_EINVAL;
-#endif
+		printk(KERN_DEBUG "IEEE 1394 device has ROM CRC error\n");
 
 	cr = CSR1212_MALLOC(sizeof(*cr));
 	if (!cr)
-		return CSR1212_ENOMEM;
+		return -ENOMEM;
 
 	cr->next = NULL;
 	cr->prev = NULL;
@@ -1279,21 +1114,26 @@ static int csr1212_parse_bus_info_block(struct csr1212_csr *csr)
 	return CSR1212_SUCCESS;
 }
 
-static int csr1212_parse_dir_entry(struct csr1212_keyval *dir,
-				   csr1212_quad_t ki,
-				   u_int32_t kv_pos)
+#define CSR1212_KV_KEY(q)	(be32_to_cpu(q) >> CSR1212_KV_KEY_SHIFT)
+#define CSR1212_KV_KEY_TYPE(q)	(CSR1212_KV_KEY(q) >> CSR1212_KV_KEY_TYPE_SHIFT)
+#define CSR1212_KV_KEY_ID(q)	(CSR1212_KV_KEY(q) & CSR1212_KV_KEY_ID_MASK)
+#define CSR1212_KV_VAL_MASK	0xffffff
+#define CSR1212_KV_VAL(q)	(be32_to_cpu(q) & CSR1212_KV_VAL_MASK)
+
+static int
+csr1212_parse_dir_entry(struct csr1212_keyval *dir, u32 ki, u32 kv_pos)
 {
 	int ret = CSR1212_SUCCESS;
 	struct csr1212_keyval *k = NULL;
-	u_int32_t offset;
+	u32 offset;
 
-	switch(CSR1212_KV_KEY_TYPE(ki)) {
+	switch (CSR1212_KV_KEY_TYPE(ki)) {
 	case CSR1212_KV_TYPE_IMMEDIATE:
 		k = csr1212_new_immediate(CSR1212_KV_KEY_ID(ki),
 					  CSR1212_KV_VAL(ki));
 		if (!k) {
-			ret = CSR1212_ENOMEM;
-			goto fail;
+			ret = -ENOMEM;
+			goto out;
 		}
 
 		k->refcnt = 0;	/* Don't keep local reference when parsing. */
@@ -1303,8 +1143,8 @@ static int csr1212_parse_dir_entry(struct csr1212_keyval *dir,
 		k = csr1212_new_csr_offset(CSR1212_KV_KEY_ID(ki),
 					   CSR1212_KV_VAL(ki));
 		if (!k) {
-			ret = CSR1212_ENOMEM;
-			goto fail;
+			ret = -ENOMEM;
+			goto out;
 		}
 		k->refcnt = 0;	/* Don't keep local reference when parsing. */
 		break;
@@ -1316,8 +1156,8 @@ static int csr1212_parse_dir_entry(struct csr1212_keyval *dir,
 			/* Uh-oh.  Can't have a relative offset of 0 for Leaves
 			 * or Directories.  The Config ROM image is most likely
 			 * messed up, so we'll just abort here. */
-			ret = CSR1212_EIO;
-			goto fail;
+			ret = -EIO;
+			goto out;
 		}
 
 		k = csr1212_find_keyval_offset(dir, offset);
@@ -1325,14 +1165,14 @@ static int csr1212_parse_dir_entry(struct csr1212_keyval *dir,
 		if (k)
 			break;		/* Found it. */
 
-		if (CSR1212_KV_KEY_TYPE(ki) == CSR1212_KV_TYPE_DIRECTORY) {
+		if (CSR1212_KV_KEY_TYPE(ki) == CSR1212_KV_TYPE_DIRECTORY)
 			k = csr1212_new_directory(CSR1212_KV_KEY_ID(ki));
-		} else {
+		else
 			k = csr1212_new_leaf(CSR1212_KV_KEY_ID(ki), NULL, 0);
-		}
+
 		if (!k) {
-			ret = CSR1212_ENOMEM;
-			goto fail;
+			ret = -ENOMEM;
+			goto out;
 		}
 		k->refcnt = 0;	/* Don't keep local reference when parsing. */
 		k->valid = 0;	/* Contents not read yet so it's not valid. */
@@ -1344,16 +1184,12 @@ static int csr1212_parse_dir_entry(struct csr1212_keyval *dir,
 		dir->next = k;
 	}
 	ret = csr1212_attach_keyval_to_directory(dir, k);
-
-fail:
-	if (ret != CSR1212_SUCCESS) {
-		if (k)
-			free_keyval(k);
-	}
+out:
+	if (ret != CSR1212_SUCCESS && k != NULL)
+		free_keyval(k);
 	return ret;
 }
 
-
 int csr1212_parse_keyval(struct csr1212_keyval *kv,
 			 struct csr1212_csr_rom_cache *cache)
 {
@@ -1362,24 +1198,20 @@ int csr1212_parse_keyval(struct csr1212_keyval *kv,
 	int ret = CSR1212_SUCCESS;
 	int kvi_len;
 
-	kvi = (struct csr1212_keyval_img*)&cache->data[bytes_to_quads(kv->offset -
-								      cache->offset)];
-	kvi_len = CSR1212_BE16_TO_CPU(kvi->length);
+	kvi = (struct csr1212_keyval_img*)
+		&cache->data[bytes_to_quads(kv->offset - cache->offset)];
+	kvi_len = be16_to_cpu(kvi->length);
 
-#if 0
-	/* Apparently there are too many differnt wrong implementations of the
-	 * CRC algorithm that verifying them is moot. */
+	/* Apparently there are many different wrong implementations of the CRC
+	 * algorithm.  We don't fail, we just warn. */
 	if ((csr1212_crc16(kvi->data, kvi_len) != kvi->crc) &&
-	    (csr1212_msft_crc16(kvi->data, kvi_len) != kvi->crc)) {
-		ret = CSR1212_EINVAL;
-		goto fail;
-	}
-#endif
+	    (csr1212_msft_crc16(kvi->data, kvi_len) != kvi->crc))
+		printk(KERN_DEBUG "IEEE 1394 device has ROM CRC error\n");
 
-	switch(kv->key.type) {
+	switch (kv->key.type) {
 	case CSR1212_KV_TYPE_DIRECTORY:
 		for (i = 0; i < kvi_len; i++) {
-			csr1212_quad_t ki = kvi->data[i];
+			u32 ki = kvi->data[i];
 
 			/* Some devices put null entries in their unit
 			 * directories.  If we come across such an entry,
@@ -1387,76 +1219,72 @@ int csr1212_parse_keyval(struct csr1212_keyval *kv,
 			if (ki == 0x0)
 				continue;
 			ret = csr1212_parse_dir_entry(kv, ki,
-						      (kv->offset +
-						       quads_to_bytes(i + 1)));
+					kv->offset + quads_to_bytes(i + 1));
 		}
 		kv->value.directory.len = kvi_len;
 		break;
 
 	case CSR1212_KV_TYPE_LEAF:
 		if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM) {
-			kv->value.leaf.data = CSR1212_MALLOC(quads_to_bytes(kvi_len));
+			size_t size = quads_to_bytes(kvi_len);
+
+			kv->value.leaf.data = CSR1212_MALLOC(size);
 			if (!kv->value.leaf.data) {
-				ret = CSR1212_ENOMEM;
-				goto fail;
+				ret = -ENOMEM;
+				goto out;
 			}
 
 			kv->value.leaf.len = kvi_len;
-			memcpy(kv->value.leaf.data, kvi->data, quads_to_bytes(kvi_len));
+			memcpy(kv->value.leaf.data, kvi->data, size);
 		}
 		break;
 	}
 
 	kv->valid = 1;
-
-fail:
+out:
 	return ret;
 }
 
-
-int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
+static int
+csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 {
 	struct csr1212_cache_region *cr, *ncr, *newcr = NULL;
 	struct csr1212_keyval_img *kvi = NULL;
 	struct csr1212_csr_rom_cache *cache;
 	int cache_index;
-	u_int64_t addr;
-	u_int32_t *cache_ptr;
-	u_int16_t kv_len = 0;
+	u64 addr;
+	u32 *cache_ptr;
+	u16 kv_len = 0;
 
-	if (!csr || !kv || csr->max_rom < 1)
-		return CSR1212_EINVAL;
+	BUG_ON(!csr || !kv || csr->max_rom < 1);
 
 	/* First find which cache the data should be in (or go in if not read
 	 * yet). */
-	for (cache = csr->cache_head; cache; cache = cache->next) {
+	for (cache = csr->cache_head; cache; cache = cache->next)
 		if (kv->offset >= cache->offset &&
 		    kv->offset < (cache->offset + cache->size))
 			break;
-	}
 
 	if (!cache) {
-		csr1212_quad_t q;
-		u_int32_t cache_size;
+		u32 q, cache_size;
 
 		/* Only create a new cache for Extended ROM leaves. */
 		if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM)
-			return CSR1212_EINVAL;
+			return -EINVAL;
 
 		if (csr->ops->bus_read(csr,
 				       CSR1212_REGISTER_SPACE_BASE + kv->offset,
-				       sizeof(csr1212_quad_t), &q, csr->private)) {
-			return CSR1212_EIO;
-		}
+				       sizeof(u32), &q, csr->private))
+			return -EIO;
 
-		kv->value.leaf.len = CSR1212_BE32_TO_CPU(q) >> 16;
+		kv->value.leaf.len = be32_to_cpu(q) >> 16;
 
 		cache_size = (quads_to_bytes(kv->value.leaf.len + 1) +
 			      (csr->max_rom - 1)) & ~(csr->max_rom - 1);
 
 		cache = csr1212_rom_cache_malloc(kv->offset, cache_size);
 		if (!cache)
-			return CSR1212_ENOMEM;
+			return -ENOMEM;
 
 		kv->value.leaf.data = &cache->data[1];
 		csr->cache_tail->next = cache;
@@ -1465,12 +1293,11 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 		csr->cache_tail = cache;
 		cache->filled_head =
 			CSR1212_MALLOC(sizeof(*cache->filled_head));
-		if (!cache->filled_head) {
-			return CSR1212_ENOMEM;
-		}
+		if (!cache->filled_head)
+			return -ENOMEM;
 
 		cache->filled_head->offset_start = 0;
-		cache->filled_head->offset_end = sizeof(csr1212_quad_t);
+		cache->filled_head->offset_end = sizeof(u32);
 		cache->filled_tail = cache->filled_head;
 		cache->filled_head->next = NULL;
 		cache->filled_head->prev = NULL;
@@ -1488,7 +1315,7 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 		if (cache_index < cr->offset_start) {
 			newcr = CSR1212_MALLOC(sizeof(*newcr));
 			if (!newcr)
-				return CSR1212_ENOMEM;
+				return -ENOMEM;
 
 			newcr->offset_start = cache_index & ~(csr->max_rom - 1);
 			newcr->offset_end = newcr->offset_start;
@@ -1501,18 +1328,18 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 			   (cache_index < cr->offset_end)) {
 			kvi = (struct csr1212_keyval_img*)
 				(&cache->data[bytes_to_quads(cache_index)]);
-			kv_len = quads_to_bytes(CSR1212_BE16_TO_CPU(kvi->length) +
-						1);
+			kv_len = quads_to_bytes(be16_to_cpu(kvi->length) + 1);
 			break;
-		} else if (cache_index == cr->offset_end)
+		} else if (cache_index == cr->offset_end) {
 			break;
+		}
 	}
 
 	if (!cr) {
 		cr = cache->filled_tail;
 		newcr = CSR1212_MALLOC(sizeof(*newcr));
 		if (!newcr)
-			return CSR1212_ENOMEM;
+			return -ENOMEM;
 
 		newcr->offset_start = cache_index & ~(csr->max_rom - 1);
 		newcr->offset_end = newcr->offset_start;
@@ -1534,7 +1361,7 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 				       csr->private)) {
 			if (csr->max_rom == 4)
 				/* We've got problems! */
-				return CSR1212_EIO;
+				return -EIO;
 
 			/* Apperently the max_rom value was a lie, set it to
 			 * do quadlet reads and try again. */
@@ -1548,8 +1375,7 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 		if (!kvi && (cr->offset_end > cache_index)) {
 			kvi = (struct csr1212_keyval_img*)
 				(&cache->data[bytes_to_quads(cache_index)]);
-			kv_len = quads_to_bytes(CSR1212_BE16_TO_CPU(kvi->length) +
-						1);
+			kv_len = quads_to_bytes(be16_to_cpu(kvi->length) + 1);
 		}
 
 		if ((kv_len + (kv->offset - cache->offset)) > cache->size) {
@@ -1557,7 +1383,7 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 			 * beyond the ConfigROM image region and thus beyond the
 			 * end of our cache region.  Therefore, we abort now
 			 * rather than seg faulting later. */
-			return CSR1212_EIO;
+			return -EIO;
 		}
 
 		ncr = cr->next;
@@ -1579,7 +1405,16 @@ int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
 	return csr1212_parse_keyval(kv, cache);
 }
 
-
+struct csr1212_keyval *
+csr1212_get_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
+{
+	if (!kv)
+		return NULL;
+	if (!kv->valid)
+		if (csr1212_read_keyval(csr, kv) != CSR1212_SUCCESS)
+			return NULL;
+	return kv;
+}
 
 int csr1212_parse_csr(struct csr1212_csr *csr)
 {
@@ -1587,20 +1422,19 @@ int csr1212_parse_csr(struct csr1212_csr *csr)
 	struct csr1212_dentry *dentry;
 	int ret;
 
-	if (!csr || !csr->ops || !csr->ops->bus_read)
-		return CSR1212_EINVAL;
+	BUG_ON(!csr || !csr->ops || !csr->ops->bus_read);
 
 	ret = csr1212_parse_bus_info_block(csr);
 	if (ret != CSR1212_SUCCESS)
 		return ret;
 
-	if (!csr->ops->get_max_rom)
+	if (!csr->ops->get_max_rom) {
 		csr->max_rom = mr_map[0];	/* default value */
-	else {
+	} else {
 		int i = csr->ops->get_max_rom(csr->bus_info_data,
 					      csr->private);
 		if (i & ~0x3)
-			return CSR1212_EINVAL;
+			return -EINVAL;
 		csr->max_rom = mr_map[i];
 	}
 
@@ -1613,7 +1447,7 @@ int csr1212_parse_csr(struct csr1212_csr *csr)
 	csr->root_kv->valid = 0;
 	csr->root_kv->next = csr->root_kv;
 	csr->root_kv->prev = csr->root_kv;
-	ret = _csr1212_read_keyval(csr, csr->root_kv);
+	ret = csr1212_read_keyval(csr, csr->root_kv);
 	if (ret != CSR1212_SUCCESS)
 		return ret;
 
@@ -1623,7 +1457,7 @@ int csr1212_parse_csr(struct csr1212_csr *csr)
 	     dentry; dentry = dentry->next) {
 		if (dentry->kv->key.id == CSR1212_KV_ID_EXTENDED_ROM &&
 			!dentry->kv->valid) {
-			ret = _csr1212_read_keyval(csr, dentry->kv);
+			ret = csr1212_read_keyval(csr, dentry->kv);
 			if (ret != CSR1212_SUCCESS)
 				return ret;
 		}

drivers/ieee1394/csr1212.h

@@ -30,94 +30,13 @@
 #ifndef __CSR1212_H__
 #define __CSR1212_H__
 
-
-/* Compatibility layer */
-#ifdef __KERNEL__
-
 #include <linux/types.h>
 #include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/vmalloc.h>
-#include <asm/pgalloc.h>
-
-#define CSR1212_MALLOC(size)		vmalloc((size))
-#define CSR1212_FREE(ptr)		vfree(ptr)
-#define CSR1212_BE16_TO_CPU(quad)	be16_to_cpu(quad)
-#define CSR1212_CPU_TO_BE16(quad)	cpu_to_be16(quad)
-#define CSR1212_BE32_TO_CPU(quad)	be32_to_cpu(quad)
-#define CSR1212_CPU_TO_BE32(quad)	cpu_to_be32(quad)
-#define CSR1212_BE64_TO_CPU(quad)	be64_to_cpu(quad)
-#define CSR1212_CPU_TO_BE64(quad)	cpu_to_be64(quad)
-
-#define CSR1212_LE16_TO_CPU(quad)	le16_to_cpu(quad)
-#define CSR1212_CPU_TO_LE16(quad)	cpu_to_le16(quad)
-#define CSR1212_LE32_TO_CPU(quad)	le32_to_cpu(quad)
-#define CSR1212_CPU_TO_LE32(quad)	cpu_to_le32(quad)
-#define CSR1212_LE64_TO_CPU(quad)	le64_to_cpu(quad)
-#define CSR1212_CPU_TO_LE64(quad)	cpu_to_le64(quad)
-
-#include <linux/errno.h>
-#define CSR1212_SUCCESS (0)
-#define CSR1212_EINVAL	(-EINVAL)
-#define CSR1212_ENOMEM	(-ENOMEM)
-#define CSR1212_ENOENT	(-ENOENT)
-#define CSR1212_EIO	(-EIO)
-#define CSR1212_EBUSY	(-EBUSY)
-
-#else	/* Userspace */
-
-#include <sys/types.h>
-#include <malloc.h>
-#define CSR1212_MALLOC(size)		malloc(size)
-#define CSR1212_FREE(ptr)		free(ptr)
-#include <endian.h>
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#include <byteswap.h>
-#define CSR1212_BE16_TO_CPU(quad)	bswap_16(quad)
-#define CSR1212_CPU_TO_BE16(quad)	bswap_16(quad)
-#define CSR1212_BE32_TO_CPU(quad)	bswap_32(quad)
-#define CSR1212_CPU_TO_BE32(quad)	bswap_32(quad)
-#define CSR1212_BE64_TO_CPU(quad)	bswap_64(quad)
-#define CSR1212_CPU_TO_BE64(quad)	bswap_64(quad)
-
-#define CSR1212_LE16_TO_CPU(quad)	(quad)
-#define CSR1212_CPU_TO_LE16(quad)	(quad)
-#define CSR1212_LE32_TO_CPU(quad)	(quad)
-#define CSR1212_CPU_TO_LE32(quad)	(quad)
-#define CSR1212_LE64_TO_CPU(quad)	(quad)
-#define CSR1212_CPU_TO_LE64(quad)	(quad)
-#else
-#define CSR1212_BE16_TO_CPU(quad)	(quad)
-#define CSR1212_CPU_TO_BE16(quad)	(quad)
-#define CSR1212_BE32_TO_CPU(quad)	(quad)
-#define CSR1212_CPU_TO_BE32(quad)	(quad)
-#define CSR1212_BE64_TO_CPU(quad)	(quad)
-#define CSR1212_CPU_TO_BE64(quad)	(quad)
-
-#define CSR1212_LE16_TO_CPU(quad)	bswap_16(quad)
-#define CSR1212_CPU_TO_LE16(quad)	bswap_16(quad)
-#define CSR1212_LE32_TO_CPU(quad)	bswap_32(quad)
-#define CSR1212_CPU_TO_LE32(quad)	bswap_32(quad)
-#define CSR1212_LE64_TO_CPU(quad)	bswap_64(quad)
-#define CSR1212_CPU_TO_LE64(quad)	bswap_64(quad)
-#endif
-
-#include <errno.h>
-#define CSR1212_SUCCESS (0)
-#define CSR1212_EINVAL	(EINVAL)
-#define CSR1212_ENOMEM	(ENOMEM)
-#define CSR1212_ENOENT	(ENOENT)
-#define CSR1212_EIO	(EIO)
-#define CSR1212_EBUSY	(EBUSY)
-
-#endif
 
+#define CSR1212_MALLOC(size)	kmalloc((size), GFP_KERNEL)
+#define CSR1212_FREE(ptr)	kfree(ptr)
 
-#define CSR1212_KV_VAL_MASK			0xffffff
-#define CSR1212_KV_KEY_SHIFT			24
-#define CSR1212_KV_KEY_TYPE_SHIFT		6
-#define CSR1212_KV_KEY_ID_MASK			0x3f
-#define CSR1212_KV_KEY_TYPE_MASK		0x3		/* After shift */
+#define CSR1212_SUCCESS (0)
 
 
 /* CSR 1212 key types */
@@ -190,48 +109,22 @@
 #define  CSR1212_UNITS_SPACE_END		(CSR1212_UNITS_SPACE_BASE + CSR1212_UNITS_SPACE_SIZE)
 #define  CSR1212_UNITS_SPACE_OFFSET		(CSR1212_UNITS_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)
 
-#define  CSR1212_EXTENDED_ROM_SIZE		(0x10000 * sizeof(u_int32_t))
-
 #define  CSR1212_INVALID_ADDR_SPACE		-1
 
+
 /* Config ROM image structures */
 struct csr1212_bus_info_block_img {
-	u_int8_t length;
-	u_int8_t crc_length;
-	u_int16_t crc;
+	u8 length;
+	u8 crc_length;
+	u16 crc;
 
 	/* Must be last */
-	u_int32_t data[0];	/* older gcc can't handle [] which is standard */
-};
-
-#define CSR1212_KV_KEY(quad)		(CSR1212_BE32_TO_CPU(quad) >> CSR1212_KV_KEY_SHIFT)
-#define CSR1212_KV_KEY_TYPE(quad)	(CSR1212_KV_KEY(quad) >> CSR1212_KV_KEY_TYPE_SHIFT)
-#define CSR1212_KV_KEY_ID(quad)		(CSR1212_KV_KEY(quad) & CSR1212_KV_KEY_ID_MASK)
-#define CSR1212_KV_VAL(quad)		(CSR1212_BE32_TO_CPU(quad) & CSR1212_KV_VAL_MASK)
-
-#define CSR1212_SET_KV_KEY(quad, key)	((quad) = \
-	CSR1212_CPU_TO_BE32(CSR1212_KV_VAL(quad) | ((key) << CSR1212_KV_KEY_SHIFT)))
-#define CSR1212_SET_KV_VAL(quad, val)	((quad) = \
-	CSR1212_CPU_TO_BE32((CSR1212_KV_KEY(quad) << CSR1212_KV_KEY_SHIFT) | (val)))
-#define CSR1212_SET_KV_TYPEID(quad, type, id)	((quad) = \
-	CSR1212_CPU_TO_BE32(CSR1212_KV_VAL(quad) | \
-	(((((type) & CSR1212_KV_KEY_TYPE_MASK) << CSR1212_KV_KEY_TYPE_SHIFT) | \
-	  ((id) & CSR1212_KV_KEY_ID_MASK)) << CSR1212_KV_KEY_SHIFT)))
-
-typedef u_int32_t csr1212_quad_t;
-
-
-struct csr1212_keyval_img {
-	u_int16_t length;
-	u_int16_t crc;
-
-	/* Must be last */
-	csr1212_quad_t data[0];	/* older gcc can't handle [] which is standard */
+	u32 data[0];	/* older gcc can't handle [] which is standard */
 };
 
 struct csr1212_leaf {
 	int len;
-	u_int32_t *data;
+	u32 *data;
 };
 
 struct csr1212_dentry {
@@ -246,12 +139,12 @@ struct csr1212_directory {
 
 struct csr1212_keyval {
 	struct {
-		u_int8_t type;
-		u_int8_t id;
+		u8 type;
+		u8 id;
 	} key;
 	union {
-		u_int32_t immediate;
-		u_int32_t csr_offset;
+		u32 immediate;
+		u32 csr_offset;
 		struct csr1212_leaf leaf;
 		struct csr1212_directory directory;
 	} value;
@@ -260,15 +153,15 @@ struct csr1212_keyval {
 
 	/* used in generating and/or parsing CSR image */
 	struct csr1212_keyval *next, *prev;	/* flat list of CSR elements */
-	u_int32_t offset;	/* position in CSR from 0xffff f000 0000 */
-	u_int8_t valid;		/* flag indicating keyval has valid data*/
+	u32 offset;	/* position in CSR from 0xffff f000 0000 */
+	u8 valid;	/* flag indicating keyval has valid data*/
 };
 
 
 struct csr1212_cache_region {
 	struct csr1212_cache_region *next, *prev;
-	u_int32_t offset_start;		/* inclusive */
-	u_int32_t offset_end;		/* exclusive */
+	u32 offset_start;	/* inclusive */
+	u32 offset_end;		/* exclusive */
 };
 
 struct csr1212_csr_rom_cache {
@@ -276,18 +169,18 @@ struct csr1212_csr_rom_cache {
 	struct csr1212_cache_region *filled_head, *filled_tail;
 	struct csr1212_keyval *layout_head, *layout_tail;
 	size_t size;
-	u_int32_t offset;
+	u32 offset;
 	struct csr1212_keyval *ext_rom;
 	size_t len;
 
 	/* Must be last */
-	u_int32_t data[0];	/* older gcc can't handle [] which is standard */
+	u32 data[0];	/* older gcc can't handle [] which is standard */
 };
 
 struct csr1212_csr {
 	size_t bus_info_len;	/* bus info block length in bytes */
 	size_t crc_len;		/* crc length in bytes */
-	u_int32_t *bus_info_data;	/* bus info data incl bus name and EUI */
+	u32 *bus_info_data;	/* bus info data incl bus name and EUI */
 
 	void *private;		/* private, bus specific data */
 	struct csr1212_bus_ops *ops;
@@ -305,52 +198,38 @@ struct csr1212_bus_ops {
 	 * from remote nodes when parsing a Config ROM (i.e., read Config ROM
 	 * entries located in the Units Space.  Must return 0 on success
 	 * anything else indicates an error. */
-	int (*bus_read) (struct csr1212_csr *csr, u_int64_t addr,
-			 u_int16_t length, void *buffer, void *private);
+	int (*bus_read) (struct csr1212_csr *csr, u64 addr,
+			 u16 length, void *buffer, void *private);
 
 	/* This function is used by csr1212 to allocate a region in units space
 	 * in the event that Config ROM entries don't all fit in the predefined
 	 * 1K region.  The void *private parameter is private member of struct
 	 * csr1212_csr. */
-	u_int64_t (*allocate_addr_range) (u_int64_t size, u_int32_t alignment,
-					  void *private);
-
+	u64 (*allocate_addr_range) (u64 size, u32 alignment, void *private);
 
 	/* This function is used by csr1212 to release a region in units space
 	 * that is no longer needed. */
-	void (*release_addr) (u_int64_t addr, void *private);
+	void (*release_addr) (u64 addr, void *private);
 
 	/* This function is used by csr1212 to determine the max read request
 	 * supported by a remote node when reading the ConfigROM space.  Must
 	 * return 0, 1, or 2 per IEEE 1212.  */
-	int (*get_max_rom) (u_int32_t *bus_info, void *private);
+	int (*get_max_rom) (u32 *bus_info, void *private);
 };
 
 
-
-
 /* Descriptor Leaf manipulation macros */
 #define CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT 24
 #define CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK 0xffffff
-#define CSR1212_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u_int32_t))
+#define CSR1212_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u32))
 
 #define CSR1212_DESCRIPTOR_LEAF_TYPE(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[0]) >> CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)
+	(be32_to_cpu((kv)->value.leaf.data[0]) >> \
+	 CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)
 #define CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[0]) & \
+	(be32_to_cpu((kv)->value.leaf.data[0]) & \
 	 CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)
-#define CSR1212_DESCRIPTOR_LEAF_DATA(kv) \
-	(&((kv)->value.leaf.data[1]))
-
-#define CSR1212_DESCRIPTOR_LEAF_SET_TYPE(kv, type) \
-	((kv)->value.leaf.data[0] = \
-	 CSR1212_CPU_TO_BE32(CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) | \
-			     ((type) << CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)))
-#define CSR1212_DESCRIPTOR_LEAF_SET_SPECIFIER_ID(kv, spec_id) \
-	((kv)->value.leaf.data[0] = \
-	 CSR1212_CPU_TO_BE32((CSR1212_DESCRIPTOR_LEAF_TYPE(kv) << \
-			      CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT) | \
-			     ((spec_id) & CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)))
+
 
 /* Text Descriptor Leaf manipulation macros */
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT 28
@@ -358,182 +237,21 @@ struct csr1212_bus_ops {
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT 16
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK 0xfff  /* after shift */
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK 0xffff
-#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u_int32_t))
+#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u32))
 
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) >> \
+	(be32_to_cpu((kv)->value.leaf.data[1]) >> \
 	 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT)
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) \
-	((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) >> \
-			     CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT) & \
-			    CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK)
+	((be32_to_cpu((kv)->value.leaf.data[1]) >> \
+	  CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT) & \
+	 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK)
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) & \
+	(be32_to_cpu((kv)->value.leaf.data[1]) & \
 	 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK)
 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(kv) \
 	(&((kv)->value.leaf.data[2]))
 
-#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_WIDTH(kv, width) \
-	((kv)->value.leaf.data[1] = \
-	 ((kv)->value.leaf.data[1] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK << \
-				CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT))) | \
-	 CSR1212_CPU_TO_BE32(((width) & \
-			      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK) << \
-			     CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT))
-#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_CHAR_SET(kv, char_set) \
-	((kv)->value.leaf.data[1] = \
-	 ((kv)->value.leaf.data[1] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK << \
-				CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT))) | \
-	 CSR1212_CPU_TO_BE32(((char_set) & \
-			      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK) << \
-			     CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT))
-#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language) \
-	((kv)->value.leaf.data[1] = \
-	 ((kv)->value.leaf.data[1] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK))) | \
-	 CSR1212_CPU_TO_BE32(((language) & \
-			      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK)))
-
-
-/* Icon Descriptor Leaf manipulation macros */
-#define CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK 0xffffff
-#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT 30
-#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK 0x3 /* after shift */
-#define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT 16
-#define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK 0xf /* after shift */
-#define CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK 0xffff
-#define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT 16
-#define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK 0xffff /* after shift */
-#define CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK 0xffff
-#define CSR1212_ICON_DESCRIPTOR_LEAF_OVERHEAD (3 * sizeof(u_int32_t))
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_VERSION(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[2]) & \
-	 CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK)
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) >> \
-	 CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT)
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE(kv) \
-	((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) >> \
-	  CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT) & \
-	 CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK)
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) & \
-	 CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK)
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN(kv) \
-	((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[4]) >> \
-	  CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_HSCAN_SHIFT) & \
-	 CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_HSCAN_MASK)
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN(kv) \
-	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[4]) & \
-	 CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK)
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE(kv) \
-	(&((kv)->value.leaf.data[5]))
-
-static inline u_int32_t *CSR1212_ICON_DESCRIPTOR_LEAF_PIXELS(struct csr1212_keyval *kv)
-{
-	static const int pd[4] = { 0, 4, 16, 256 };
-	static const int cs[16] = { 4, 2 };
-	int ps = pd[CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH(kv)];
-
-	return &kv->value.leaf.data[5 +
-				    (ps * cs[CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE(kv)]) /
-			   sizeof(u_int32_t)];
-}
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_VERSION(kv, version) \
-	((kv)->value.leaf.data[2] = \
-	 ((kv)->value.leaf.data[2] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK))) | \
-	 CSR1212_CPU_TO_BE32(((version) & \
-			      CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK)))
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_PALETTE_DEPTH(kv, palette_depth) \
-	((kv)->value.leaf.data[3] = \
-	 ((kv)->value.leaf.data[3] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK << \
-				CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT))) | \
-	 CSR1212_CPU_TO_BE32(((palette_depth) & \
-			      CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK) << \
-			     CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT))
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_COLOR_SPACE(kv, color_space) \
-	((kv)->value.leaf.data[3] = \
-	 ((kv)->value.leaf.data[3] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK << \
-				CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT))) | \
-	 CSR1212_CPU_TO_BE32(((color_space) & \
-			      CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK) << \
-			     CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT))
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language) \
-	((kv)->value.leaf.data[3] = \
-	 ((kv)->value.leaf.data[3] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK))) | \
-	 CSR1212_CPU_TO_BE32(((language) & \
-			      CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK)))
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_HSCAN(kv, hscan) \
-	((kv)->value.leaf.data[4] = \
-	 ((kv)->value.leaf.data[4] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK << \
-				CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT))) | \
-	 CSR1212_CPU_TO_BE32(((hscan) & \
-			      CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK) << \
-			     CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT))
-
-#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_VSCAN(kv, vscan) \
-	((kv)->value.leaf.data[4] = \
-	 (((kv)->value.leaf.data[4] & \
-	  CSR1212_CPU_TO_BE32(~CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK))) | \
-	 CSR1212_CPU_TO_BE32(((vscan) & \
-			      CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK)))
-
-
-/* Modifiable Descriptor Leaf manipulation macros */
-#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT 16
-#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK 0xffff
-#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_SHIFT 32
-#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK 0xffff
-#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_LO_MASK 0xffffffffULL
-
-#define CSR1212_MODIFIABLE_DESCRIPTOR_MAX_SIZE(kv) \
-	CSR1212_BE16_TO_CPU((kv)->value.leaf.data[0] >> CSR1212_MODIFIABLE_DESCRIPTOR_MAX_SIZE_SHIFT)
-
-#define CSR1212_MODIFIABLE_DESCRIPTOR_ADDRESS(kv) \
-	(CSR1212_BE16_TO_CPU(((u_int64_t)((kv)->value.leaf.data[0])) << \
-			     CSR1212_MODIFIABLE_DESCRIPTOR_ADDR_HI_SHIFT) | \
-	 CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]))
-
-#define CSR1212_MODIFIABLE_DESCRIPTOR_SET_MAX_SIZE(kv, size) \
-	((kv)->value.leaf.data[0] = \
-	 ((kv)->value.leaf.data[0] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK << \
-				CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT))) | \
-	 CSR1212_CPU_TO_BE32(((size) & \
-			      CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK) << \
-			     CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT))
-
-#define CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_HI(kv, addr) \
-	((kv)->value.leaf.data[0] = \
-	 ((kv)->value.leaf.data[0] & \
-	  CSR1212_CPU_TO_BE32(~(CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK))) | \
-	  CSR1212_CPU_TO_BE32(((addr) & \
-			       CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK)))
-
-#define CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_LO(kv, addr) \
-	((kv)->value.leaf.data[1] = \
-	 CSR1212_CPU_TO_BE32(addr & CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_LO_MASK))
-
-
 
 /* The following 2 function are for creating new Configuration ROM trees.  The
  * first function is used for both creating local trees and parsing remote
@@ -543,11 +261,10 @@ extern struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
 					      size_t bus_info_size,
 					      void *private);
 extern void csr1212_init_local_csr(struct csr1212_csr *csr,
-				   const u_int32_t *bus_info_data, int max_rom);
+				   const u32 *bus_info_data, int max_rom);
 
 
-/* The following function destroys a Configuration ROM tree and release all
- * memory taken by the tree. */
+/* Destroy a Configuration ROM tree and release all memory taken by the tree. */
 extern void csr1212_destroy_csr(struct csr1212_csr *csr);
 
 
@@ -555,50 +272,20 @@ extern void csr1212_destroy_csr(struct csr1212_csr *csr);
  * a Configuration ROM tree.  Code that creates new keyvals with these functions
  * must release those keyvals with csr1212_release_keyval() when they are no
  * longer needed. */
-extern struct csr1212_keyval *csr1212_new_immediate(u_int8_t key, u_int32_t value);
-extern struct csr1212_keyval *csr1212_new_leaf(u_int8_t key, const void *data,
-					       size_t data_len);
-extern struct csr1212_keyval *csr1212_new_csr_offset(u_int8_t key,
-						     u_int32_t csr_offset);
-extern struct csr1212_keyval *csr1212_new_directory(u_int8_t key);
-extern struct csr1212_keyval *csr1212_new_extended_immediate(u_int32_t spec,
-							     u_int32_t key,
-							     u_int32_t value);
-extern struct csr1212_keyval *csr1212_new_extended_leaf(u_int32_t spec,
-							u_int32_t key,
-							const void *data,
-							size_t data_len);
-extern struct csr1212_keyval *csr1212_new_descriptor_leaf(u_int8_t dtype,
-							  u_int32_t specifier_id,
-							  const void *data,
-							  size_t data_len);
-extern struct csr1212_keyval *csr1212_new_textual_descriptor_leaf(u_int8_t cwidth,
-								  u_int16_t cset,
-								  u_int16_t language,
-								  const void *data,
-								  size_t data_len);
+extern struct csr1212_keyval *csr1212_new_immediate(u8 key, u32 value);
+extern struct csr1212_keyval *csr1212_new_directory(u8 key);
 extern struct csr1212_keyval *csr1212_new_string_descriptor_leaf(const char *s);
-extern struct csr1212_keyval *csr1212_new_icon_descriptor_leaf(u_int32_t version,
-							       u_int8_t palette_depth,
-							       u_int8_t color_space,
-							       u_int16_t language,
-							       u_int16_t hscan,
-							       u_int16_t vscan,
-							       u_int32_t *palette,
-							       u_int32_t *pixels);
-extern struct csr1212_keyval *csr1212_new_modifiable_descriptor_leaf(u_int16_t max_size,
-								     u_int64_t address);
-extern struct csr1212_keyval *csr1212_new_keyword_leaf(int strc,
-						       const char *strv[]);
-
-
-/* The following functions manage association between keyvals.  Typically,
+
+
+/* The following function manages association between keyvals.  Typically,
  * Descriptor Leaves and Directories will be associated with another keyval and
  * it is desirable for the Descriptor keyval to be place immediately after the
- * keyval that it is associated with.*/
-extern int csr1212_associate_keyval(struct csr1212_keyval *kv,
-				    struct csr1212_keyval *associate);
-extern void csr1212_disassociate_keyval(struct csr1212_keyval *kv);
+ * keyval that it is associated with.
+ * Take care with subsequent ROM modifications:  There is no function to remove
+ * previously specified associations.
+ */
+extern void csr1212_associate_keyval(struct csr1212_keyval *kv,
+				     struct csr1212_keyval *associate);
 
 
 /* The following functions manage the association of a keyval and directories.
@@ -609,23 +296,15 @@ extern void csr1212_detach_keyval_from_directory(struct csr1212_keyval *dir,
 						 struct csr1212_keyval *kv);
 
 
-/* The following functions create a Configuration ROM image from the tree of
- * keyvals provided.  csr1212_generate_csr_image() creates a complete image in
- * the list of caches available via csr->cache_head.  The other functions are
- * provided should there be a need to create a flat image without restrictions
- * placed by IEEE 1212. */
-extern struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *cache,
-							 struct csr1212_keyval *start_kv,
-							 int start_pos);
-extern size_t csr1212_generate_layout_order(struct csr1212_keyval *kv);
-extern void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache);
+/* Creates a complete Configuration ROM image in the list of caches available
+ * via csr->cache_head. */
 extern int csr1212_generate_csr_image(struct csr1212_csr *csr);
 
 
 /* This is a convience function for reading a block of data out of one of the
  * caches in the csr->cache_head list. */
-extern int csr1212_read(struct csr1212_csr *csr, u_int32_t offset, void *buffer,
-			u_int32_t len);
+extern int csr1212_read(struct csr1212_csr *csr, u32 offset, void *buffer,
+			u32 len);
 
 
 /* The following functions are in place for parsing Configuration ROM images.
@@ -635,15 +314,11 @@ extern int csr1212_parse_keyval(struct csr1212_keyval *kv,
 				struct csr1212_csr_rom_cache *cache);
 extern int csr1212_parse_csr(struct csr1212_csr *csr);
 
-/* These are internal functions referenced by inline functions below. */
-extern int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv);
-extern void _csr1212_destroy_keyval(struct csr1212_keyval *kv);
-
 
 /* This function allocates a new cache which may be used for either parsing or
  * generating sub-sets of Configuration ROM images. */
-static inline struct csr1212_csr_rom_cache *csr1212_rom_cache_malloc(u_int32_t offset,
-								     size_t size)
+static inline struct csr1212_csr_rom_cache *
+csr1212_rom_cache_malloc(u32 offset, size_t size)
 {
 	struct csr1212_csr_rom_cache *cache;
 
@@ -667,16 +342,8 @@ static inline struct csr1212_csr_rom_cache *csr1212_rom_cache_malloc(u_int32_t o
 
 /* This function ensures that a keyval contains data when referencing a keyval
  * created by parsing a Configuration ROM. */
-static inline struct csr1212_keyval *csr1212_get_keyval(struct csr1212_csr *csr,
-							struct csr1212_keyval *kv)
-{
-	if (!kv)
-		return NULL;
-	if (!kv->valid)
-		if (_csr1212_read_keyval(csr, kv) != CSR1212_SUCCESS)
-			return NULL;
-	return kv;
-}
+extern struct csr1212_keyval *
+csr1212_get_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv);
 
 
 /* This function increments the reference count for a keyval should there be a
@@ -691,37 +358,29 @@ static inline void csr1212_keep_keyval(struct csr1212_keyval *kv)
  * keyval when there are no more users of the keyval.  This should be called by
  * any code that calls csr1212_keep_keyval() or any of the keyval creation
  * routines csr1212_new_*(). */
-static inline void csr1212_release_keyval(struct csr1212_keyval *kv)
-{
-	if (kv->refcnt > 1)
-		kv->refcnt--;
-	else
-		_csr1212_destroy_keyval(kv);
-}
+extern void csr1212_release_keyval(struct csr1212_keyval *kv);
 
 
 /*
  * This macro allows for looping over the keyval entries in a directory and it
  * ensures that keyvals from remote ConfigROMs are parsed properly.
  *
- * _csr is a struct csr1212_csr * that points to CSR associated with dir.
- * _kv is a struct csr1212_keyval * that'll point to the current keyval (loop index).
- * _dir is a struct csr1212_keyval * that points to the directory to be looped.
- * _pos is a struct csr1212_dentry * that is used internally for indexing.
+ * struct csr1212_csr *_csr points to the CSR associated with dir.
+ * struct csr1212_keyval *_kv points to the current keyval (loop index).
+ * struct csr1212_keyval *_dir points to the directory to be looped.
+ * struct csr1212_dentry *_pos is used internally for indexing.
  *
  * kv will be NULL upon exit of the loop.
  */
-#define csr1212_for_each_dir_entry(_csr, _kv, _dir, _pos)			\
-	for (csr1212_get_keyval((_csr), (_dir)),				\
-	     _pos = (_dir)->value.directory.dentries_head,			\
-	     _kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) : NULL;	\
-	     (_kv) && (_pos);							\
-	     (_kv->associate == NULL) ?						\
-		     ((_pos = _pos->next), 					\
-		      (_kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) :	\
-                          NULL)) :						\
+#define csr1212_for_each_dir_entry(_csr, _kv, _dir, _pos)		\
+	for (csr1212_get_keyval((_csr), (_dir)),			\
+	     _pos = (_dir)->value.directory.dentries_head,		\
+	     _kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) : NULL;\
+	     (_kv) && (_pos);						\
+	     (_kv->associate == NULL) ?					\
+		     ((_pos = _pos->next), (_kv = (_pos) ?		\
+				csr1212_get_keyval((_csr), _pos->kv) :	\
+				NULL)) :				\
 		     (_kv = csr1212_get_keyval((_csr), _kv->associate)))
 
-
-
 #endif /* __CSR1212_H__ */

drivers/ieee1394/dma.c

@@ -62,6 +62,9 @@ void dma_prog_region_free(struct dma_prog_region *prog)
 
 /* dma_region */
 
+/**
+ * dma_region_init - clear out all fields but do not allocate anything
+ */
 void dma_region_init(struct dma_region *dma)
 {
 	dma->kvirt = NULL;
@@ -71,6 +74,9 @@ void dma_region_init(struct dma_region *dma)
 	dma->sglist = NULL;
 }
 
+/**
+ * dma_region_alloc - allocate the buffer and map it to the IOMMU
+ */
 int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes,
 		     struct pci_dev *dev, int direction)
 {
@@ -128,6 +134,9 @@ int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes,
 	return -ENOMEM;
 }
 
+/**
+ * dma_region_free - unmap and free the buffer
+ */
 void dma_region_free(struct dma_region *dma)
 {
 	if (dma->n_dma_pages) {
@@ -167,6 +176,12 @@ static inline int dma_region_find(struct dma_region *dma, unsigned long offset,
 	return i;
 }
 
+/**
+ * dma_region_offset_to_bus - get bus address of an offset within a DMA region
+ *
+ * Returns the DMA bus address of the byte with the given @offset relative to
+ * the beginning of the @dma.
+ */
 dma_addr_t dma_region_offset_to_bus(struct dma_region * dma,
 				    unsigned long offset)
 {
@@ -177,6 +192,9 @@ dma_addr_t dma_region_offset_to_bus(struct dma_region * dma,
 	return sg_dma_address(sg) + rem;
 }
 
+/**
+ * dma_region_sync_for_cpu - sync the CPU's view of the buffer
+ */
 void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset,
 			     unsigned long len)
 {
@@ -193,6 +211,9 @@ void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset,
 				dma->direction);
 }
 
+/**
+ * dma_region_sync_for_device - sync the IO bus' view of the buffer
+ */
 void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset,
 				unsigned long len)
 {
@@ -244,6 +265,9 @@ static struct vm_operations_struct dma_region_vm_ops = {
 	.nopage = dma_region_pagefault,
 };
 
+/**
+ * dma_region_mmap - map the buffer into a user space process
+ */
 int dma_region_mmap(struct dma_region *dma, struct file *file,
 		    struct vm_area_struct *vma)
 {

drivers/ieee1394/dma.h

@@ -66,35 +66,23 @@ struct dma_region {
 	int direction;
 };
 
-/* clear out all fields but do not allocate anything */
 void dma_region_init(struct dma_region *dma);
-
-/* allocate the buffer and map it to the IOMMU */
 int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes,
 		     struct pci_dev *dev, int direction);
-
-/* unmap and free the buffer */
 void dma_region_free(struct dma_region *dma);
-
-/* sync the CPU's view of the buffer */
 void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset,
 			     unsigned long len);
-
-/* sync the IO bus' view of the buffer */
 void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset,
 				unsigned long len);
-
-/* map the buffer into a user space process */
 int  dma_region_mmap(struct dma_region *dma, struct file *file,
 		     struct vm_area_struct *vma);
+dma_addr_t dma_region_offset_to_bus(struct dma_region *dma,
+				    unsigned long offset);
 
-/* macro to index into a DMA region (or dma_prog_region) */
+/**
+ * dma_region_i - macro to index into a DMA region (or dma_prog_region)
+ */
 #define dma_region_i(_dma, _type, _index) \
 	( ((_type*) ((_dma)->kvirt)) + (_index) )
 
-/* return the DMA bus address of the byte with the given offset
- * relative to the beginning of the dma_region */
-dma_addr_t dma_region_offset_to_bus(struct dma_region *dma,
-				    unsigned long offset);
-
 #endif /* IEEE1394_DMA_H */

drivers/ieee1394/eth1394.c

@@ -1,5 +1,5 @@
 /*
- * eth1394.c -- Ethernet driver for Linux IEEE-1394 Subsystem
+ * eth1394.c -- IPv4 driver for Linux IEEE-1394 Subsystem
  *
  * Copyright (C) 2001-2003 Ben Collins <bcollins@debian.org>
  *               2000 Bonin Franck <boninf@free.fr>
@@ -22,10 +22,9 @@
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* This driver intends to support RFC 2734, which describes a method for
- * transporting IPv4 datagrams over IEEE-1394 serial busses. This driver
- * will ultimately support that method, but currently falls short in
- * several areas.
+/*
+ * This driver intends to support RFC 2734, which describes a method for
+ * transporting IPv4 datagrams over IEEE-1394 serial busses.
  *
  * TODO:
  * RFC 2734 related:
@@ -40,7 +39,6 @@
  * - Consider garbage collecting old partial datagrams after X amount of time
  */
 
-
 #include <linux/module.h>
 
 #include <linux/kernel.h>
@@ -52,7 +50,6 @@
 
 #include <linux/netdevice.h>
 #include <linux/inetdevice.h>
-#include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/ip.h>
@@ -84,10 +81,6 @@
 #define ETH1394_PRINT(level, dev_name, fmt, args...) \
 	printk(level "%s: %s: " fmt, driver_name, dev_name, ## args)
 
-#define DEBUG(fmt, args...) \
-	printk(KERN_ERR "%s:%s[%d]: " fmt "\n", driver_name, __FUNCTION__, __LINE__, ## args)
-#define TRACE() printk(KERN_ERR "%s:%s[%d] ---- TRACE\n", driver_name, __FUNCTION__, __LINE__)
-
 struct fragment_info {
 	struct list_head list;
 	int offset;
@@ -105,9 +98,9 @@ struct partial_datagram {
 };
 
 struct pdg_list {
-	struct list_head list;		/* partial datagram list per node	*/
-	unsigned int sz;		/* partial datagram list size per node	*/
-	spinlock_t lock;		/* partial datagram lock		*/
+	struct list_head list;	/* partial datagram list per node	*/
+	unsigned int sz;	/* partial datagram list size per node	*/
+	spinlock_t lock;	/* partial datagram lock		*/
 };
 
 struct eth1394_host_info {
@@ -121,16 +114,14 @@ struct eth1394_node_ref {
 };
 
 struct eth1394_node_info {
-	u16 maxpayload;			/* Max payload			*/
-	u8 sspd;			/* Max speed			*/
-	u64 fifo;			/* FIFO address			*/
-	struct pdg_list pdg;		/* partial RX datagram lists	*/
-	int dgl;			/* Outgoing datagram label	*/
+	u16 maxpayload;		/* max payload			*/
+	u8 sspd;		/* max speed			*/
+	u64 fifo;		/* FIFO address			*/
+	struct pdg_list pdg;	/* partial RX datagram lists	*/
+	int dgl;		/* outgoing datagram label	*/
 };
 
-/* Our ieee1394 highlevel driver */
-#define ETH1394_DRIVER_NAME "eth1394"
-static const char driver_name[] = ETH1394_DRIVER_NAME;
+static const char driver_name[] = "eth1394";
 
 static struct kmem_cache *packet_task_cache;
 
@@ -138,18 +129,12 @@ static struct hpsb_highlevel eth1394_highlevel;
 
 /* Use common.lf to determine header len */
 static const int hdr_type_len[] = {
-	sizeof (struct eth1394_uf_hdr),
-	sizeof (struct eth1394_ff_hdr),
-	sizeof (struct eth1394_sf_hdr),
-	sizeof (struct eth1394_sf_hdr)
+	sizeof(struct eth1394_uf_hdr),
+	sizeof(struct eth1394_ff_hdr),
+	sizeof(struct eth1394_sf_hdr),
+	sizeof(struct eth1394_sf_hdr)
 };
 
-/* Change this to IEEE1394_SPEED_S100 to make testing easier */
-#define ETH1394_SPEED_DEF	IEEE1394_SPEED_MAX
-
-/* For now, this needs to be 1500, so that XP works with us */
-#define ETH1394_DATA_LEN	ETH_DATA_LEN
-
 static const u16 eth1394_speedto_maxpayload[] = {
 /*     S100, S200, S400, S800, S1600, S3200 */
 	512, 1024, 2048, 4096,  4096,  4096
@@ -159,7 +144,8 @@ MODULE_AUTHOR("Ben Collins (bcollins@debian.org)");
 MODULE_DESCRIPTION("IEEE 1394 IPv4 Driver (IPv4-over-1394 as per RFC 2734)");
 MODULE_LICENSE("GPL");
 
-/* The max_partial_datagrams parameter is the maximum number of fragmented
+/*
+ * The max_partial_datagrams parameter is the maximum number of fragmented
  * datagrams per node that eth1394 will keep in memory.  Providing an upper
  * bound allows us to limit the amount of memory that partial datagrams
  * consume in the event that some partial datagrams are never completed.
@@ -179,10 +165,7 @@ static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr);
 static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh);
 static void ether1394_header_cache_update(struct hh_cache *hh,
 					  struct net_device *dev,
-					  unsigned char * haddr);
-static int ether1394_mac_addr(struct net_device *dev, void *p);
-
-static void purge_partial_datagram(struct list_head *old);
+					  unsigned char *haddr);
 static int ether1394_tx(struct sk_buff *skb, struct net_device *dev);
 static void ether1394_iso(struct hpsb_iso *iso);
 
@@ -190,9 +173,9 @@ static struct ethtool_ops ethtool_ops;
 
 static int ether1394_write(struct hpsb_host *host, int srcid, int destid,
 			   quadlet_t *data, u64 addr, size_t len, u16 flags);
-static void ether1394_add_host (struct hpsb_host *host);
-static void ether1394_remove_host (struct hpsb_host *host);
-static void ether1394_host_reset (struct hpsb_host *host);
+static void ether1394_add_host(struct hpsb_host *host);
+static void ether1394_remove_host(struct hpsb_host *host);
+static void ether1394_host_reset(struct hpsb_host *host);
 
 /* Function for incoming 1394 packets */
 static struct hpsb_address_ops addr_ops = {
@@ -207,89 +190,107 @@ static struct hpsb_highlevel eth1394_highlevel = {
 	.host_reset =	ether1394_host_reset,
 };
 
+static int ether1394_recv_init(struct eth1394_priv *priv)
+{
+	unsigned int iso_buf_size;
+
+	/* FIXME: rawiso limits us to PAGE_SIZE */
+	iso_buf_size = min((unsigned int)PAGE_SIZE,
+			   2 * (1U << (priv->host->csr.max_rec + 1)));
+
+	priv->iso = hpsb_iso_recv_init(priv->host,
+				       ETHER1394_GASP_BUFFERS * iso_buf_size,
+				       ETHER1394_GASP_BUFFERS,
+				       priv->broadcast_channel,
+				       HPSB_ISO_DMA_PACKET_PER_BUFFER,
+				       1, ether1394_iso);
+	if (priv->iso == NULL) {
+		ETH1394_PRINT_G(KERN_ERR, "Failed to allocate IR context\n");
+		priv->bc_state = ETHER1394_BC_ERROR;
+		return -EAGAIN;
+	}
+
+	if (hpsb_iso_recv_start(priv->iso, -1, (1 << 3), -1) < 0)
+		priv->bc_state = ETHER1394_BC_STOPPED;
+	else
+		priv->bc_state = ETHER1394_BC_RUNNING;
+	return 0;
+}
 
 /* This is called after an "ifup" */
-static int ether1394_open (struct net_device *dev)
+static int ether1394_open(struct net_device *dev)
 {
 	struct eth1394_priv *priv = netdev_priv(dev);
-	int ret = 0;
+	int ret;
 
-	/* Something bad happened, don't even try */
 	if (priv->bc_state == ETHER1394_BC_ERROR) {
-		/* we'll try again */
-		priv->iso = hpsb_iso_recv_init(priv->host,
-					       ETHER1394_ISO_BUF_SIZE,
-					       ETHER1394_GASP_BUFFERS,
-					       priv->broadcast_channel,
-					       HPSB_ISO_DMA_PACKET_PER_BUFFER,
-					       1, ether1394_iso);
-		if (priv->iso == NULL) {
-			ETH1394_PRINT(KERN_ERR, dev->name,
-				      "Could not allocate isochronous receive "
-				      "context for the broadcast channel\n");
-			priv->bc_state = ETHER1394_BC_ERROR;
-			ret = -EAGAIN;
-		} else {
-			if (hpsb_iso_recv_start(priv->iso, -1, (1 << 3), -1) < 0)
-				priv->bc_state = ETHER1394_BC_STOPPED;
-			else
-				priv->bc_state = ETHER1394_BC_RUNNING;
-		}
+		ret = ether1394_recv_init(priv);
+		if (ret)
+			return ret;
 	}
-
-	if (ret)
-		return ret;
-
-	netif_start_queue (dev);
+	netif_start_queue(dev);
 	return 0;
 }
 
 /* This is called after an "ifdown" */
-static int ether1394_stop (struct net_device *dev)
+static int ether1394_stop(struct net_device *dev)
 {
-	netif_stop_queue (dev);
+	netif_stop_queue(dev);
 	return 0;
 }
 
 /* Return statistics to the caller */
-static struct net_device_stats *ether1394_stats (struct net_device *dev)
+static struct net_device_stats *ether1394_stats(struct net_device *dev)
 {
 	return &(((struct eth1394_priv *)netdev_priv(dev))->stats);
 }
 
-/* What to do if we timeout. I think a host reset is probably in order, so
- * that's what we do. Should we increment the stat counters too?  */
-static void ether1394_tx_timeout (struct net_device *dev)
+/* FIXME: What to do if we timeout? I think a host reset is probably in order,
+ * so that's what we do. Should we increment the stat counters too?  */
+static void ether1394_tx_timeout(struct net_device *dev)
 {
-	ETH1394_PRINT (KERN_ERR, dev->name, "Timeout, resetting host %s\n",
-		       ((struct eth1394_priv *)netdev_priv(dev))->host->driver->name);
+	struct hpsb_host *host =
+			((struct eth1394_priv *)netdev_priv(dev))->host;
 
-	highlevel_host_reset (((struct eth1394_priv *)netdev_priv(dev))->host);
+	ETH1394_PRINT(KERN_ERR, dev->name, "Timeout, resetting host\n");
+	ether1394_host_reset(host);
+}
 
-	netif_wake_queue (dev);
+static inline int ether1394_max_mtu(struct hpsb_host* host)
+{
+	return (1 << (host->csr.max_rec + 1))
+			- sizeof(union eth1394_hdr) - ETHER1394_GASP_OVERHEAD;
 }
 
 static int ether1394_change_mtu(struct net_device *dev, int new_mtu)
 {
-	struct eth1394_priv *priv = netdev_priv(dev);
+	int max_mtu;
 
-	if ((new_mtu < 68) ||
-	    (new_mtu > min(ETH1394_DATA_LEN,
-			   (int)((1 << (priv->host->csr.max_rec + 1)) -
-				 (sizeof(union eth1394_hdr) +
-				  ETHER1394_GASP_OVERHEAD)))))
+	if (new_mtu < 68)
 		return -EINVAL;
+
+	max_mtu = ether1394_max_mtu(
+			((struct eth1394_priv *)netdev_priv(dev))->host);
+	if (new_mtu > max_mtu) {
+		ETH1394_PRINT(KERN_INFO, dev->name,
+			      "Local node constrains MTU to %d\n", max_mtu);
+		return -ERANGE;
+	}
+
 	dev->mtu = new_mtu;
 	return 0;
 }
 
 static void purge_partial_datagram(struct list_head *old)
 {
-	struct partial_datagram *pd = list_entry(old, struct partial_datagram, list);
+	struct partial_datagram *pd;
 	struct list_head *lh, *n;
+	struct fragment_info *fi;
+
+	pd = list_entry(old, struct partial_datagram, list);
 
 	list_for_each_safe(lh, n, &pd->frag_info) {
-		struct fragment_info *fi = list_entry(lh, struct fragment_info, list);
+		fi = list_entry(lh, struct fragment_info, list);
 		list_del(lh);
 		kfree(fi);
 	}
@@ -330,35 +331,26 @@ static struct eth1394_node_ref *eth1394_find_node_nodeid(struct list_head *inl,
 							 nodeid_t nodeid)
 {
 	struct eth1394_node_ref *node;
-	list_for_each_entry(node, inl, list) {
+
+	list_for_each_entry(node, inl, list)
 		if (node->ud->ne->nodeid == nodeid)
 			return node;
-	}
 
 	return NULL;
 }
 
-static int eth1394_probe(struct device *dev)
+static int eth1394_new_node(struct eth1394_host_info *hi,
+			    struct unit_directory *ud)
 {
-	struct unit_directory *ud;
-	struct eth1394_host_info *hi;
 	struct eth1394_priv *priv;
 	struct eth1394_node_ref *new_node;
 	struct eth1394_node_info *node_info;
 
-	ud = container_of(dev, struct unit_directory, device);
-
-	hi = hpsb_get_hostinfo(&eth1394_highlevel, ud->ne->host);
-	if (!hi)
-		return -ENOENT;
-
-	new_node = kmalloc(sizeof(*new_node),
-			   in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
+	new_node = kmalloc(sizeof(*new_node), GFP_KERNEL);
 	if (!new_node)
 		return -ENOMEM;
 
-	node_info = kmalloc(sizeof(*node_info),
-			    in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
+	node_info = kmalloc(sizeof(*node_info), GFP_KERNEL);
 	if (!node_info) {
 		kfree(new_node);
 		return -ENOMEM;
@@ -374,10 +366,22 @@ static int eth1394_probe(struct device *dev)
 
 	priv = netdev_priv(hi->dev);
 	list_add_tail(&new_node->list, &priv->ip_node_list);
-
 	return 0;
 }
 
+static int eth1394_probe(struct device *dev)
+{
+	struct unit_directory *ud;
+	struct eth1394_host_info *hi;
+
+	ud = container_of(dev, struct unit_directory, device);
+	hi = hpsb_get_hostinfo(&eth1394_highlevel, ud->ne->host);
+	if (!hi)
+		return -ENOENT;
+
+	return eth1394_new_node(hi, ud);
+}
+
 static int eth1394_remove(struct device *dev)
 {
 	struct unit_directory *ud;
@@ -396,24 +400,23 @@ static int eth1394_remove(struct device *dev)
 	priv = netdev_priv(hi->dev);
 
 	old_node = eth1394_find_node(&priv->ip_node_list, ud);
+	if (!old_node)
+		return 0;
 
-	if (old_node) {
-		list_del(&old_node->list);
-		kfree(old_node);
+	list_del(&old_node->list);
+	kfree(old_node);
 
-		node_info = (struct eth1394_node_info*)ud->device.driver_data;
+	node_info = (struct eth1394_node_info*)ud->device.driver_data;
 
-		spin_lock_irqsave(&node_info->pdg.lock, flags);
-		/* The partial datagram list should be empty, but we'll just
-		 * make sure anyway... */
-		list_for_each_safe(lh, n, &node_info->pdg.list) {
-			purge_partial_datagram(lh);
-		}
-		spin_unlock_irqrestore(&node_info->pdg.lock, flags);
+	spin_lock_irqsave(&node_info->pdg.lock, flags);
+	/* The partial datagram list should be empty, but we'll just
+	 * make sure anyway... */
+	list_for_each_safe(lh, n, &node_info->pdg.list)
+		purge_partial_datagram(lh);
+	spin_unlock_irqrestore(&node_info->pdg.lock, flags);
 
-		kfree(node_info);
-		ud->device.driver_data = NULL;
-	}
+	kfree(node_info);
+	ud->device.driver_data = NULL;
 	return 0;
 }
 
@@ -422,44 +425,19 @@ static int eth1394_update(struct unit_directory *ud)
 	struct eth1394_host_info *hi;
 	struct eth1394_priv *priv;
 	struct eth1394_node_ref *node;
-	struct eth1394_node_info *node_info;
 
 	hi = hpsb_get_hostinfo(&eth1394_highlevel, ud->ne->host);
 	if (!hi)
 		return -ENOENT;
 
 	priv = netdev_priv(hi->dev);
-
 	node = eth1394_find_node(&priv->ip_node_list, ud);
+	if (node)
+		return 0;
 
-	if (!node) {
-		node = kmalloc(sizeof(*node),
-			       in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
-		if (!node)
-			return -ENOMEM;
-
-		node_info = kmalloc(sizeof(*node_info),
-				    in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
-		if (!node_info) {
-			kfree(node);
-			return -ENOMEM;
-		}
-
-		spin_lock_init(&node_info->pdg.lock);
-		INIT_LIST_HEAD(&node_info->pdg.list);
-		node_info->pdg.sz = 0;
-
-		ud->device.driver_data = node_info;
-		node->ud = ud;
-
-		priv = netdev_priv(hi->dev);
-		list_add_tail(&node->list, &priv->ip_node_list);
-	}
-
-	return 0;
+	return eth1394_new_node(hi, ud);
 }
 
-
 static struct ieee1394_device_id eth1394_id_table[] = {
 	{
 		.match_flags = (IEEE1394_MATCH_SPECIFIER_ID |
@@ -473,7 +451,7 @@ static struct ieee1394_device_id eth1394_id_table[] = {
 MODULE_DEVICE_TABLE(ieee1394, eth1394_id_table);
 
 static struct hpsb_protocol_driver eth1394_proto_driver = {
-	.name		= ETH1394_DRIVER_NAME,
+	.name		= driver_name,
 	.id_table	= eth1394_id_table,
 	.update		= eth1394_update,
 	.driver		= {
@@ -482,47 +460,50 @@ static struct hpsb_protocol_driver eth1394_proto_driver = {
 	},
 };
 
-
-static void ether1394_reset_priv (struct net_device *dev, int set_mtu)
+static void ether1394_reset_priv(struct net_device *dev, int set_mtu)
 {
 	unsigned long flags;
 	int i;
 	struct eth1394_priv *priv = netdev_priv(dev);
 	struct hpsb_host *host = priv->host;
-	u64 guid = get_unaligned((u64*)&(host->csr.rom->bus_info_data[3]));
-	u16 maxpayload = 1 << (host->csr.max_rec + 1);
+	u64 guid = get_unaligned((u64 *)&(host->csr.rom->bus_info_data[3]));
 	int max_speed = IEEE1394_SPEED_MAX;
 
-	spin_lock_irqsave (&priv->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 
-	memset(priv->ud_list, 0, sizeof(struct node_entry*) * ALL_NODES);
+	memset(priv->ud_list, 0, sizeof(priv->ud_list));
 	priv->bc_maxpayload = 512;
 
 	/* Determine speed limit */
-	for (i = 0; i < host->node_count; i++)
+	/* FIXME: This is broken for nodes with link speed < PHY speed,
+	 * and it is suboptimal for S200B...S800B hardware.
+	 * The result of nodemgr's speed probe should be used somehow. */
+	for (i = 0; i < host->node_count; i++) {
+		/* take care of S100B...S400B PHY ports */
+		if (host->speed[i] == SELFID_SPEED_UNKNOWN) {
+			max_speed = IEEE1394_SPEED_100;
+			break;
+		}
 		if (max_speed > host->speed[i])
 			max_speed = host->speed[i];
+	}
 	priv->bc_sspd = max_speed;
 
-	/* We'll use our maxpayload as the default mtu */
 	if (set_mtu) {
-		dev->mtu = min(ETH1394_DATA_LEN,
-			       (int)(maxpayload -
-				     (sizeof(union eth1394_hdr) +
-				      ETHER1394_GASP_OVERHEAD)));
+		/* Use the RFC 2734 default 1500 octets or the maximum payload
+		 * as initial MTU */
+		dev->mtu = min(1500, ether1394_max_mtu(host));
 
 		/* Set our hardware address while we're at it */
 		memcpy(dev->dev_addr, &guid, sizeof(u64));
 		memset(dev->broadcast, 0xff, sizeof(u64));
 	}
 
-	spin_unlock_irqrestore (&priv->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 }
 
-/* This function is called right before register_netdev */
-static void ether1394_init_dev (struct net_device *dev)
+static void ether1394_init_dev(struct net_device *dev)
 {
-	/* Our functions */
 	dev->open		= ether1394_open;
 	dev->stop		= ether1394_stop;
 	dev->hard_start_xmit	= ether1394_tx;
@@ -535,10 +516,9 @@ static void ether1394_init_dev (struct net_device *dev)
 	dev->hard_header_cache	= ether1394_header_cache;
 	dev->header_cache_update= ether1394_header_cache_update;
 	dev->hard_header_parse	= ether1394_header_parse;
-	dev->set_mac_address	= ether1394_mac_addr;
+
 	SET_ETHTOOL_OPS(dev, &ethtool_ops);
 
-	/* Some constants */
 	dev->watchdog_timeo	= ETHER1394_TIMEOUT;
 	dev->flags		= IFF_BROADCAST | IFF_MULTICAST;
 	dev->features		= NETIF_F_HIGHDMA;
@@ -546,7 +526,8 @@ static void ether1394_init_dev (struct net_device *dev)
 	dev->hard_header_len 	= ETH1394_HLEN;
 	dev->type		= ARPHRD_IEEE1394;
 
-	ether1394_reset_priv (dev, 1);
+	/* FIXME: This value was copied from ether_setup(). Is it too much? */
+	dev->tx_queue_len	= 1000;
 }
 
 /*
@@ -554,34 +535,33 @@ static void ether1394_init_dev (struct net_device *dev)
  * when the module is installed. This is where we add all of our ethernet
  * devices. One for each host.
  */
-static void ether1394_add_host (struct hpsb_host *host)
+static void ether1394_add_host(struct hpsb_host *host)
 {
 	struct eth1394_host_info *hi = NULL;
 	struct net_device *dev = NULL;
 	struct eth1394_priv *priv;
 	u64 fifo_addr;
 
-	if (!(host->config_roms & HPSB_CONFIG_ROM_ENTRY_IP1394))
+	if (hpsb_config_rom_ip1394_add(host) != 0) {
+		ETH1394_PRINT_G(KERN_ERR, "Can't add IP-over-1394 ROM entry\n");
 		return;
+	}
 
 	fifo_addr = hpsb_allocate_and_register_addrspace(
 			&eth1394_highlevel, host, &addr_ops,
 			ETHER1394_REGION_ADDR_LEN, ETHER1394_REGION_ADDR_LEN,
 			CSR1212_INVALID_ADDR_SPACE, CSR1212_INVALID_ADDR_SPACE);
-	if (fifo_addr == CSR1212_INVALID_ADDR_SPACE)
-		goto out;
-
-	/* We should really have our own alloc_hpsbdev() function in
-	 * net_init.c instead of calling the one for ethernet then hijacking
-	 * it for ourselves.  That way we'd be a real networking device. */
-	dev = alloc_etherdev(sizeof (struct eth1394_priv));
+	if (fifo_addr == CSR1212_INVALID_ADDR_SPACE) {
+		ETH1394_PRINT_G(KERN_ERR, "Cannot register CSR space\n");
+		hpsb_config_rom_ip1394_remove(host);
+		return;
+	}
 
+	dev = alloc_netdev(sizeof(*priv), "eth%d", ether1394_init_dev);
 	if (dev == NULL) {
-		ETH1394_PRINT_G (KERN_ERR, "Out of memory trying to allocate "
-				 "etherdevice for IEEE 1394 device %s-%d\n",
-				 host->driver->name, host->id);
+		ETH1394_PRINT_G(KERN_ERR, "Out of memory\n");
 		goto out;
-        }
+	}
 
 	SET_MODULE_OWNER(dev);
 #if 0
@@ -590,31 +570,26 @@ static void ether1394_add_host (struct hpsb_host *host)
 #endif
 
 	priv = netdev_priv(dev);
-
 	INIT_LIST_HEAD(&priv->ip_node_list);
-
 	spin_lock_init(&priv->lock);
 	priv->host = host;
 	priv->local_fifo = fifo_addr;
 
 	hi = hpsb_create_hostinfo(&eth1394_highlevel, host, sizeof(*hi));
-
 	if (hi == NULL) {
-		ETH1394_PRINT_G (KERN_ERR, "Out of memory trying to create "
-				 "hostinfo for IEEE 1394 device %s-%d\n",
-				 host->driver->name, host->id);
+		ETH1394_PRINT_G(KERN_ERR, "Out of memory\n");
 		goto out;
-        }
+	}
 
-	ether1394_init_dev(dev);
+	ether1394_reset_priv(dev, 1);
 
-	if (register_netdev (dev)) {
-		ETH1394_PRINT (KERN_ERR, dev->name, "Error registering network driver\n");
+	if (register_netdev(dev)) {
+		ETH1394_PRINT_G(KERN_ERR, "Cannot register the driver\n");
 		goto out;
 	}
 
-	ETH1394_PRINT (KERN_INFO, dev->name, "IEEE-1394 IPv4 over 1394 Ethernet (fw-host%d)\n",
-		       host->id);
+	ETH1394_PRINT(KERN_INFO, dev->name, "IPv4 over IEEE 1394 (fw-host%d)\n",
+		      host->id);
 
 	hi->host = host;
 	hi->dev = dev;
@@ -623,61 +598,37 @@ static void ether1394_add_host (struct hpsb_host *host)
 	 * be checked when the eth device is opened. */
 	priv->broadcast_channel = host->csr.broadcast_channel & 0x3f;
 
-	priv->iso = hpsb_iso_recv_init(host,
-				       ETHER1394_ISO_BUF_SIZE,
-				       ETHER1394_GASP_BUFFERS,
-				       priv->broadcast_channel,
-				       HPSB_ISO_DMA_PACKET_PER_BUFFER,
-				       1, ether1394_iso);
-	if (priv->iso == NULL) {
-		ETH1394_PRINT(KERN_ERR, dev->name,
-			      "Could not allocate isochronous receive context "
-			      "for the broadcast channel\n");
-		priv->bc_state = ETHER1394_BC_ERROR;
-	} else {
-		if (hpsb_iso_recv_start(priv->iso, -1, (1 << 3), -1) < 0)
-			priv->bc_state = ETHER1394_BC_STOPPED;
-		else
-			priv->bc_state = ETHER1394_BC_RUNNING;
-	}
-
+	ether1394_recv_init(priv);
 	return;
-
 out:
-	if (dev != NULL)
+	if (dev)
 		free_netdev(dev);
 	if (hi)
 		hpsb_destroy_hostinfo(&eth1394_highlevel, host);
-
-	return;
+	hpsb_unregister_addrspace(&eth1394_highlevel, host, fifo_addr);
+	hpsb_config_rom_ip1394_remove(host);
 }
 
 /* Remove a card from our list */
-static void ether1394_remove_host (struct hpsb_host *host)
+static void ether1394_remove_host(struct hpsb_host *host)
 {
 	struct eth1394_host_info *hi;
+	struct eth1394_priv *priv;
 
 	hi = hpsb_get_hostinfo(&eth1394_highlevel, host);
-	if (hi != NULL) {
-		struct eth1394_priv *priv = netdev_priv(hi->dev);
-
-		hpsb_unregister_addrspace(&eth1394_highlevel, host,
-					  priv->local_fifo);
-
-		if (priv->iso != NULL)
-			hpsb_iso_shutdown(priv->iso);
-
-		if (hi->dev) {
-			unregister_netdev (hi->dev);
-			free_netdev(hi->dev);
-		}
-	}
-
-	return;
+	if (!hi)
+		return;
+	priv = netdev_priv(hi->dev);
+	hpsb_unregister_addrspace(&eth1394_highlevel, host, priv->local_fifo);
+	hpsb_config_rom_ip1394_remove(host);
+	if (priv->iso)
+		hpsb_iso_shutdown(priv->iso);
+	unregister_netdev(hi->dev);
+	free_netdev(hi->dev);
 }
 
-/* A reset has just arisen */
-static void ether1394_host_reset (struct hpsb_host *host)
+/* A bus reset happened */
+static void ether1394_host_reset(struct hpsb_host *host)
 {
 	struct eth1394_host_info *hi;
 	struct eth1394_priv *priv;
@@ -690,24 +641,23 @@ static void ether1394_host_reset (struct hpsb_host *host)
 	hi = hpsb_get_hostinfo(&eth1394_highlevel, host);
 
 	/* This can happen for hosts that we don't use */
-	if (hi == NULL)
+	if (!hi)
 		return;
 
 	dev = hi->dev;
-	priv = (struct eth1394_priv *)netdev_priv(dev);
+	priv = netdev_priv(dev);
 
-	/* Reset our private host data, but not our mtu */
-	netif_stop_queue (dev);
-	ether1394_reset_priv (dev, 0);
+	/* Reset our private host data, but not our MTU */
+	netif_stop_queue(dev);
+	ether1394_reset_priv(dev, 0);
 
 	list_for_each_entry(node, &priv->ip_node_list, list) {
-		node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
+		node_info = node->ud->device.driver_data;
 
 		spin_lock_irqsave(&node_info->pdg.lock, flags);
 
-		list_for_each_safe(lh, n, &node_info->pdg.list) {
+		list_for_each_safe(lh, n, &node_info->pdg.list)
 			purge_partial_datagram(lh);
-		}
 
 		INIT_LIST_HEAD(&(node_info->pdg.list));
 		node_info->pdg.sz = 0;
@@ -715,7 +665,7 @@ static void ether1394_host_reset (struct hpsb_host *host)
 		spin_unlock_irqrestore(&node_info->pdg.lock, flags);
 	}
 
-	netif_wake_queue (dev);
+	netif_wake_queue(dev);
 }
 
 /******************************************
@@ -723,7 +673,6 @@ static void ether1394_host_reset (struct hpsb_host *host)
  ******************************************/
 /* These functions have been adapted from net/ethernet/eth.c */
 
-
 /* Create a fake MAC header for an arbitrary protocol layer.
  * saddr=NULL means use device source address
  * daddr=NULL means leave destination address (eg unresolved arp). */
@@ -731,25 +680,24 @@ static int ether1394_header(struct sk_buff *skb, struct net_device *dev,
 			    unsigned short type, void *daddr, void *saddr,
 			    unsigned len)
 {
-	struct eth1394hdr *eth = (struct eth1394hdr *)skb_push(skb, ETH1394_HLEN);
+	struct eth1394hdr *eth =
+			(struct eth1394hdr *)skb_push(skb, ETH1394_HLEN);
 
 	eth->h_proto = htons(type);
 
-	if (dev->flags & (IFF_LOOPBACK|IFF_NOARP)) {
+	if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
 		memset(eth->h_dest, 0, dev->addr_len);
-		return(dev->hard_header_len);
+		return dev->hard_header_len;
 	}
 
 	if (daddr) {
-		memcpy(eth->h_dest,daddr,dev->addr_len);
+		memcpy(eth->h_dest, daddr, dev->addr_len);
 		return dev->hard_header_len;
 	}
 
 	return -dev->hard_header_len;
-
 }
 
-
 /* Rebuild the faked MAC header. This is called after an ARP
  * (or in future other address resolution) has completed on this
  * sk_buff. We now let ARP fill in the other fields.
@@ -760,38 +708,30 @@ static int ether1394_header(struct sk_buff *skb, struct net_device *dev,
 static int ether1394_rebuild_header(struct sk_buff *skb)
 {
 	struct eth1394hdr *eth = (struct eth1394hdr *)skb->data;
-	struct net_device *dev = skb->dev;
 
-	switch (eth->h_proto) {
-
-#ifdef CONFIG_INET
-	case __constant_htons(ETH_P_IP):
- 		return arp_find((unsigned char*)&eth->h_dest, skb);
-#endif
-	default:
-		ETH1394_PRINT(KERN_DEBUG, dev->name,
-			      "unable to resolve type %04x addresses.\n",
-			      ntohs(eth->h_proto));
-		break;
-	}
+	if (eth->h_proto == htons(ETH_P_IP))
+		return arp_find((unsigned char *)&eth->h_dest, skb);
 
+	ETH1394_PRINT(KERN_DEBUG, skb->dev->name,
+		      "unable to resolve type %04x addresses\n",
+		      ntohs(eth->h_proto));
 	return 0;
 }
 
 static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr)
 {
 	struct net_device *dev = skb->dev;
+
 	memcpy(haddr, dev->dev_addr, ETH1394_ALEN);
 	return ETH1394_ALEN;
 }
 
-
 static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh)
 {
 	unsigned short type = hh->hh_type;
-	struct eth1394hdr *eth = (struct eth1394hdr*)(((u8*)hh->hh_data) +
-						      (16 - ETH1394_HLEN));
 	struct net_device *dev = neigh->dev;
+	struct eth1394hdr *eth =
+		(struct eth1394hdr *)((u8 *)hh->hh_data + 16 - ETH1394_HLEN);
 
 	if (type == htons(ETH_P_802_3))
 		return -1;
@@ -808,38 +748,25 @@ static void ether1394_header_cache_update(struct hh_cache *hh,
 					  struct net_device *dev,
 					  unsigned char * haddr)
 {
-	memcpy(((u8*)hh->hh_data) + (16 - ETH1394_HLEN), haddr, dev->addr_len);
+	memcpy((u8 *)hh->hh_data + 16 - ETH1394_HLEN, haddr, dev->addr_len);
 }
 
-static int ether1394_mac_addr(struct net_device *dev, void *p)
-{
-	if (netif_running(dev))
-		return -EBUSY;
-
-	/* Not going to allow setting the MAC address, we really need to use
-	 * the real one supplied by the hardware */
-	 return -EINVAL;
- }
-
-
-
 /******************************************
  * Datagram reception code
  ******************************************/
 
 /* Copied from net/ethernet/eth.c */
-static inline u16 ether1394_type_trans(struct sk_buff *skb,
-				       struct net_device *dev)
+static u16 ether1394_type_trans(struct sk_buff *skb, struct net_device *dev)
 {
 	struct eth1394hdr *eth;
 	unsigned char *rawp;
 
 	skb_reset_mac_header(skb);
-	skb_pull (skb, ETH1394_HLEN);
+	skb_pull(skb, ETH1394_HLEN);
 	eth = eth1394_hdr(skb);
 
 	if (*eth->h_dest & 1) {
-		if (memcmp(eth->h_dest, dev->broadcast, dev->addr_len)==0)
+		if (memcmp(eth->h_dest, dev->broadcast, dev->addr_len) == 0)
 			skb->pkt_type = PACKET_BROADCAST;
 #if 0
 		else
@@ -848,47 +775,45 @@ static inline u16 ether1394_type_trans(struct sk_buff *skb,
 	} else {
 		if (memcmp(eth->h_dest, dev->dev_addr, dev->addr_len))
 			skb->pkt_type = PACKET_OTHERHOST;
-        }
+	}
 
-	if (ntohs (eth->h_proto) >= 1536)
+	if (ntohs(eth->h_proto) >= 1536)
 		return eth->h_proto;
 
 	rawp = skb->data;
 
-        if (*(unsigned short *)rawp == 0xFFFF)
-		return htons (ETH_P_802_3);
+	if (*(unsigned short *)rawp == 0xFFFF)
+		return htons(ETH_P_802_3);
 
-        return htons (ETH_P_802_2);
+	return htons(ETH_P_802_2);
 }
 
 /* Parse an encapsulated IP1394 header into an ethernet frame packet.
  * We also perform ARP translation here, if need be.  */
-static inline u16 ether1394_parse_encap(struct sk_buff *skb,
-					struct net_device *dev,
-					nodeid_t srcid, nodeid_t destid,
-					u16 ether_type)
+static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev,
+				 nodeid_t srcid, nodeid_t destid,
+				 u16 ether_type)
 {
 	struct eth1394_priv *priv = netdev_priv(dev);
 	u64 dest_hw;
 	unsigned short ret = 0;
 
-	/* Setup our hw addresses. We use these to build the
-	 * ethernet header.  */
+	/* Setup our hw addresses. We use these to build the ethernet header. */
 	if (destid == (LOCAL_BUS | ALL_NODES))
 		dest_hw = ~0ULL;  /* broadcast */
 	else
-		dest_hw = cpu_to_be64((((u64)priv->host->csr.guid_hi) << 32) |
+		dest_hw = cpu_to_be64((u64)priv->host->csr.guid_hi << 32 |
 				      priv->host->csr.guid_lo);
 
 	/* If this is an ARP packet, convert it. First, we want to make
 	 * use of some of the fields, since they tell us a little bit
 	 * about the sending machine.  */
 	if (ether_type == htons(ETH_P_ARP)) {
-		struct eth1394_arp *arp1394 = (struct eth1394_arp*)skb->data;
+		struct eth1394_arp *arp1394 = (struct eth1394_arp *)skb->data;
 		struct arphdr *arp = (struct arphdr *)skb->data;
 		unsigned char *arp_ptr = (unsigned char *)(arp + 1);
 		u64 fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32 |
-			ntohl(arp1394->fifo_lo);
+					   ntohl(arp1394->fifo_lo);
 		u8 max_rec = min(priv->host->csr.max_rec,
 				 (u8)(arp1394->max_rec));
 		int sspd = arp1394->sspd;
@@ -902,16 +827,17 @@ static inline u16 ether1394_parse_encap(struct sk_buff *skb,
 		if (sspd > 5 || sspd < 0)
 			sspd = 0;
 
-		maxpayload = min(eth1394_speedto_maxpayload[sspd], (u16)(1 << (max_rec + 1)));
+		maxpayload = min(eth1394_speedto_maxpayload[sspd],
+				 (u16)(1 << (max_rec + 1)));
 
 		guid = get_unaligned(&arp1394->s_uniq_id);
 		node = eth1394_find_node_guid(&priv->ip_node_list,
 					      be64_to_cpu(guid));
-		if (!node) {
+		if (!node)
 			return 0;
-		}
 
-		node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
+		node_info =
+		    (struct eth1394_node_info *)node->ud->device.driver_data;
 
 		/* Update our speed/payload/fifo_offset table */
 		node_info->maxpayload =	maxpayload;
@@ -930,7 +856,7 @@ static inline u16 ether1394_parse_encap(struct sk_buff *skb,
 
 		arp->ar_hln = 8;
 		arp_ptr += arp->ar_hln;		/* skip over sender unique id */
-		*(u32*)arp_ptr = arp1394->sip;	/* move sender IP addr */
+		*(u32 *)arp_ptr = arp1394->sip;	/* move sender IP addr */
 		arp_ptr += arp->ar_pln;		/* skip over sender IP addr */
 
 		if (arp->ar_op == htons(ARPOP_REQUEST))
@@ -947,65 +873,65 @@ static inline u16 ether1394_parse_encap(struct sk_buff *skb,
 	return ret;
 }
 
-static inline int fragment_overlap(struct list_head *frag_list, int offset, int len)
+static int fragment_overlap(struct list_head *frag_list, int offset, int len)
 {
 	struct fragment_info *fi;
+	int end = offset + len;
 
-	list_for_each_entry(fi, frag_list, list) {
-		if ( ! ((offset > (fi->offset + fi->len - 1)) ||
-		       ((offset + len - 1) < fi->offset)))
+	list_for_each_entry(fi, frag_list, list)
+		if (offset < fi->offset + fi->len && end > fi->offset)
 			return 1;
-	}
+
 	return 0;
 }
 
-static inline struct list_head *find_partial_datagram(struct list_head *pdgl, int dgl)
+static struct list_head *find_partial_datagram(struct list_head *pdgl, int dgl)
 {
 	struct partial_datagram *pd;
 
-	list_for_each_entry(pd, pdgl, list) {
+	list_for_each_entry(pd, pdgl, list)
 		if (pd->dgl == dgl)
 			return &pd->list;
-	}
+
 	return NULL;
 }
 
 /* Assumes that new fragment does not overlap any existing fragments */
-static inline int new_fragment(struct list_head *frag_info, int offset, int len)
+static int new_fragment(struct list_head *frag_info, int offset, int len)
 {
 	struct list_head *lh;
 	struct fragment_info *fi, *fi2, *new;
 
 	list_for_each(lh, frag_info) {
 		fi = list_entry(lh, struct fragment_info, list);
-		if ((fi->offset + fi->len) == offset) {
+		if (fi->offset + fi->len == offset) {
 			/* The new fragment can be tacked on to the end */
 			fi->len += len;
 			/* Did the new fragment plug a hole? */
 			fi2 = list_entry(lh->next, struct fragment_info, list);
-			if ((fi->offset + fi->len) == fi2->offset) {
+			if (fi->offset + fi->len == fi2->offset) {
 				/* glue fragments together */
 				fi->len += fi2->len;
 				list_del(lh->next);
 				kfree(fi2);
 			}
 			return 0;
-		} else if ((offset + len) == fi->offset) {
+		} else if (offset + len == fi->offset) {
 			/* The new fragment can be tacked on to the beginning */
 			fi->offset = offset;
 			fi->len += len;
 			/* Did the new fragment plug a hole? */
 			fi2 = list_entry(lh->prev, struct fragment_info, list);
-			if ((fi2->offset + fi2->len) == fi->offset) {
+			if (fi2->offset + fi2->len == fi->offset) {
 				/* glue fragments together */
 				fi2->len += fi->len;
 				list_del(lh);
 				kfree(fi);
 			}
 			return 0;
-		} else if (offset > (fi->offset + fi->len)) {
+		} else if (offset > fi->offset + fi->len) {
 			break;
-		} else if ((offset + len) < fi->offset) {
+		} else if (offset + len < fi->offset) {
 			lh = lh->prev;
 			break;
 		}
@@ -1019,14 +945,12 @@ static inline int new_fragment(struct list_head *frag_info, int offset, int len)
 	new->len = len;
 
 	list_add(&new->list, lh);
-
 	return 0;
 }
 
-static inline int new_partial_datagram(struct net_device *dev,
-				       struct list_head *pdgl, int dgl,
-				       int dg_size, char *frag_buf,
-				       int frag_off, int frag_len)
+static int new_partial_datagram(struct net_device *dev, struct list_head *pdgl,
+				int dgl, int dg_size, char *frag_buf,
+				int frag_off, int frag_len)
 {
 	struct partial_datagram *new;
 
@@ -1059,33 +983,33 @@ static inline int new_partial_datagram(struct net_device *dev,
 	memcpy(new->pbuf + frag_off, frag_buf, frag_len);
 
 	list_add(&new->list, pdgl);
-
 	return 0;
 }
 
-static inline int update_partial_datagram(struct list_head *pdgl, struct list_head *lh,
-					  char *frag_buf, int frag_off, int frag_len)
+static int update_partial_datagram(struct list_head *pdgl, struct list_head *lh,
+				   char *frag_buf, int frag_off, int frag_len)
 {
-	struct partial_datagram *pd = list_entry(lh, struct partial_datagram, list);
+	struct partial_datagram *pd =
+			list_entry(lh, struct partial_datagram, list);
 
-	if (new_fragment(&pd->frag_info, frag_off, frag_len) < 0) {
+	if (new_fragment(&pd->frag_info, frag_off, frag_len) < 0)
 		return -ENOMEM;
-	}
 
 	memcpy(pd->pbuf + frag_off, frag_buf, frag_len);
 
 	/* Move list entry to beginnig of list so that oldest partial
 	 * datagrams percolate to the end of the list */
 	list_move(lh, pdgl);
-
 	return 0;
 }
 
-static inline int is_datagram_complete(struct list_head *lh, int dg_size)
+static int is_datagram_complete(struct list_head *lh, int dg_size)
 {
-	struct partial_datagram *pd = list_entry(lh, struct partial_datagram, list);
-	struct fragment_info *fi = list_entry(pd->frag_info.next,
-					      struct fragment_info, list);
+	struct partial_datagram *pd;
+	struct fragment_info *fi;
+
+	pd = list_entry(lh, struct partial_datagram, list);
+	fi = list_entry(pd->frag_info.next, struct fragment_info, list);
 
 	return (fi->len == dg_size);
 }
@@ -1108,7 +1032,7 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
 	if (!ud) {
 		struct eth1394_node_ref *node;
 		node = eth1394_find_node_nodeid(&priv->ip_node_list, srcid);
-		if (!node) {
+		if (unlikely(!node)) {
 			HPSB_PRINT(KERN_ERR, "ether1394 rx: sender nodeid "
 				   "lookup failure: " NODE_BUS_FMT,
 				   NODE_BUS_ARGS(priv->host, srcid));
@@ -1120,7 +1044,7 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
 		priv->ud_list[NODEID_TO_NODE(srcid)] = ud;
 	}
 
-	node_info = (struct eth1394_node_info*)ud->device.driver_data;
+	node_info = (struct eth1394_node_info *)ud->device.driver_data;
 
 	/* First, did we receive a fragmented or unfragmented datagram? */
 	hdr->words.word1 = ntohs(hdr->words.word1);
@@ -1133,13 +1057,14 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
 		 * high level network layer. */
 
 		skb = dev_alloc_skb(len + dev->hard_header_len + 15);
-		if (!skb) {
-			HPSB_PRINT (KERN_ERR, "ether1394 rx: low on mem\n");
+		if (unlikely(!skb)) {
+			ETH1394_PRINT_G(KERN_ERR, "Out of memory\n");
 			priv->stats.rx_dropped++;
 			return -1;
 		}
 		skb_reserve(skb, (dev->hard_header_len + 15) & ~15);
-		memcpy(skb_put(skb, len - hdr_len), buf + hdr_len, len - hdr_len);
+		memcpy(skb_put(skb, len - hdr_len), buf + hdr_len,
+		       len - hdr_len);
 		ether_type = hdr->uf.ether_type;
 	} else {
 		/* A datagram fragment has been received, now the fun begins. */
@@ -1224,9 +1149,8 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
 
 		pd = list_entry(lh, struct partial_datagram, list);
 
-		if (hdr->common.lf == ETH1394_HDR_LF_FF) {
+		if (hdr->common.lf == ETH1394_HDR_LF_FF)
 			pd->ether_type = ether_type;
-		}
 
 		if (is_datagram_complete(lh, dg_size)) {
 			ether_type = pd->ether_type;
@@ -1253,8 +1177,8 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
 	skb->protocol = ether1394_parse_encap(skb, dev, srcid, destid,
 					      ether_type);
 
-
 	spin_lock_irqsave(&priv->lock, flags);
+
 	if (!skb->protocol) {
 		priv->stats.rx_errors++;
 		priv->stats.rx_dropped++;
@@ -1288,9 +1212,9 @@ static int ether1394_write(struct hpsb_host *host, int srcid, int destid,
 	struct eth1394_host_info *hi;
 
 	hi = hpsb_get_hostinfo(&eth1394_highlevel, host);
-	if (hi == NULL) {
-		ETH1394_PRINT_G(KERN_ERR, "Could not find net device for host %s\n",
-				host->driver->name);
+	if (unlikely(!hi)) {
+		ETH1394_PRINT_G(KERN_ERR, "No net device at fw-host%d\n",
+				host->id);
 		return RCODE_ADDRESS_ERROR;
 	}
 
@@ -1314,9 +1238,9 @@ static void ether1394_iso(struct hpsb_iso *iso)
 	int nready;
 
 	hi = hpsb_get_hostinfo(&eth1394_highlevel, iso->host);
-	if (hi == NULL) {
-		ETH1394_PRINT_G(KERN_ERR, "Could not find net device for host %s\n",
-				iso->host->driver->name);
+	if (unlikely(!hi)) {
+		ETH1394_PRINT_G(KERN_ERR, "No net device at fw-host%d\n",
+				iso->host->id);
 		return;
 	}
 
@@ -1326,20 +1250,20 @@ static void ether1394_iso(struct hpsb_iso *iso)
 	for (i = 0; i < nready; i++) {
 		struct hpsb_iso_packet_info *info =
 			&iso->infos[(iso->first_packet + i) % iso->buf_packets];
-		data = (quadlet_t*) (iso->data_buf.kvirt + info->offset);
+		data = (quadlet_t *)(iso->data_buf.kvirt + info->offset);
 
 		/* skip over GASP header */
 		buf = (char *)data + 8;
 		len = info->len - 8;
 
-		specifier_id = (((be32_to_cpu(data[0]) & 0xffff) << 8) |
-				((be32_to_cpu(data[1]) & 0xff000000) >> 24));
+		specifier_id = (be32_to_cpu(data[0]) & 0xffff) << 8 |
+			       (be32_to_cpu(data[1]) & 0xff000000) >> 24;
 		source_id = be32_to_cpu(data[0]) >> 16;
 
 		priv = netdev_priv(dev);
 
-		if (info->channel != (iso->host->csr.broadcast_channel & 0x3f) ||
-		   specifier_id != ETHER1394_GASP_SPECIFIER_ID) {
+		if (info->channel != (iso->host->csr.broadcast_channel & 0x3f)
+		    || specifier_id != ETHER1394_GASP_SPECIFIER_ID) {
 			/* This packet is not for us */
 			continue;
 		}
@@ -1367,35 +1291,31 @@ static void ether1394_iso(struct hpsb_iso *iso)
  * speed, and unicast FIFO address information between the sender_unique_id
  * and the IP addresses.
  */
-static inline void ether1394_arp_to_1394arp(struct sk_buff *skb,
-					    struct net_device *dev)
+static void ether1394_arp_to_1394arp(struct sk_buff *skb,
+				     struct net_device *dev)
 {
 	struct eth1394_priv *priv = netdev_priv(dev);
-
 	struct arphdr *arp = (struct arphdr *)skb->data;
 	unsigned char *arp_ptr = (unsigned char *)(arp + 1);
 	struct eth1394_arp *arp1394 = (struct eth1394_arp *)skb->data;
 
-	/* Believe it or not, all that need to happen is sender IP get moved
-	 * and set hw_addr_len, max_rec, sspd, fifo_hi and fifo_lo.  */
 	arp1394->hw_addr_len	= 16;
 	arp1394->sip		= *(u32*)(arp_ptr + ETH1394_ALEN);
 	arp1394->max_rec	= priv->host->csr.max_rec;
 	arp1394->sspd		= priv->host->csr.lnk_spd;
-	arp1394->fifo_hi	= htons (priv->local_fifo >> 32);
-	arp1394->fifo_lo	= htonl (priv->local_fifo & ~0x0);
-
-	return;
+	arp1394->fifo_hi	= htons(priv->local_fifo >> 32);
+	arp1394->fifo_lo	= htonl(priv->local_fifo & ~0x0);
 }
 
 /* We need to encapsulate the standard header with our own. We use the
  * ethernet header's proto for our own. */
-static inline unsigned int ether1394_encapsulate_prep(unsigned int max_payload,
-						      __be16 proto,
-						      union eth1394_hdr *hdr,
-						      u16 dg_size, u16 dgl)
+static unsigned int ether1394_encapsulate_prep(unsigned int max_payload,
+					       __be16 proto,
+					       union eth1394_hdr *hdr,
+					       u16 dg_size, u16 dgl)
 {
-	unsigned int adj_max_payload = max_payload - hdr_type_len[ETH1394_HDR_LF_UF];
+	unsigned int adj_max_payload =
+				max_payload - hdr_type_len[ETH1394_HDR_LF_UF];
 
 	/* Does it all fit in one packet? */
 	if (dg_size <= adj_max_payload) {
@@ -1408,19 +1328,19 @@ static inline unsigned int ether1394_encapsulate_prep(unsigned int max_payload,
 		hdr->ff.dgl = dgl;
 		adj_max_payload = max_payload - hdr_type_len[ETH1394_HDR_LF_FF];
 	}
-	return((dg_size + (adj_max_payload - 1)) / adj_max_payload);
+	return (dg_size + adj_max_payload - 1) / adj_max_payload;
 }
 
-static inline unsigned int ether1394_encapsulate(struct sk_buff *skb,
-						 unsigned int max_payload,
-						 union eth1394_hdr *hdr)
+static unsigned int ether1394_encapsulate(struct sk_buff *skb,
+					  unsigned int max_payload,
+					  union eth1394_hdr *hdr)
 {
 	union eth1394_hdr *bufhdr;
 	int ftype = hdr->common.lf;
 	int hdrsz = hdr_type_len[ftype];
 	unsigned int adj_max_payload = max_payload - hdrsz;
 
-	switch(ftype) {
+	switch (ftype) {
 	case ETH1394_HDR_LF_UF:
 		bufhdr = (union eth1394_hdr *)skb_push(skb, hdrsz);
 		bufhdr->words.word1 = htons(hdr->words.word1);
@@ -1449,11 +1369,10 @@ static inline unsigned int ether1394_encapsulate(struct sk_buff *skb,
 		bufhdr->words.word3 = htons(hdr->words.word3);
 		bufhdr->words.word4 = 0;
 	}
-
 	return min(max_payload, skb->len);
 }
 
-static inline struct hpsb_packet *ether1394_alloc_common_packet(struct hpsb_host *host)
+static struct hpsb_packet *ether1394_alloc_common_packet(struct hpsb_host *host)
 {
 	struct hpsb_packet *p;
 
@@ -1466,61 +1385,57 @@ static inline struct hpsb_packet *ether1394_alloc_common_packet(struct hpsb_host
 	return p;
 }
 
-static inline int ether1394_prep_write_packet(struct hpsb_packet *p,
-					      struct hpsb_host *host,
-					      nodeid_t node, u64 addr,
-					      void * data, int tx_len)
+static int ether1394_prep_write_packet(struct hpsb_packet *p,
+				       struct hpsb_host *host, nodeid_t node,
+				       u64 addr, void *data, int tx_len)
 {
 	p->node_id = node;
 	p->data = NULL;
 
 	p->tcode = TCODE_WRITEB;
-	p->header[1] = (host->node_id << 16) | (addr >> 32);
+	p->header[1] = host->node_id << 16 | addr >> 32;
 	p->header[2] = addr & 0xffffffff;
 
 	p->header_size = 16;
 	p->expect_response = 1;
 
 	if (hpsb_get_tlabel(p)) {
-		ETH1394_PRINT_G(KERN_ERR, "No more tlabels left while sending "
-				"to node " NODE_BUS_FMT "\n", NODE_BUS_ARGS(host, node));
+		ETH1394_PRINT_G(KERN_ERR, "Out of tlabels\n");
 		return -1;
 	}
-	p->header[0] = (p->node_id << 16) | (p->tlabel << 10)
-		| (1 << 8) | (TCODE_WRITEB << 4);
+	p->header[0] =
+		p->node_id << 16 | p->tlabel << 10 | 1 << 8 | TCODE_WRITEB << 4;
 
 	p->header[3] = tx_len << 16;
 	p->data_size = (tx_len + 3) & ~3;
-	p->data = (quadlet_t*)data;
+	p->data = data;
 
 	return 0;
 }
 
-static inline void ether1394_prep_gasp_packet(struct hpsb_packet *p,
-					      struct eth1394_priv *priv,
-					      struct sk_buff *skb, int length)
+static void ether1394_prep_gasp_packet(struct hpsb_packet *p,
+				       struct eth1394_priv *priv,
+				       struct sk_buff *skb, int length)
 {
 	p->header_size = 4;
 	p->tcode = TCODE_STREAM_DATA;
 
-	p->header[0] = (length << 16) | (3 << 14)
-		| ((priv->broadcast_channel) << 8)
-		| (TCODE_STREAM_DATA << 4);
+	p->header[0] = length << 16 | 3 << 14 | priv->broadcast_channel << 8 |
+		       TCODE_STREAM_DATA << 4;
 	p->data_size = length;
-	p->data = ((quadlet_t*)skb->data) - 2;
-	p->data[0] = cpu_to_be32((priv->host->node_id << 16) |
+	p->data = (quadlet_t *)skb->data - 2;
+	p->data[0] = cpu_to_be32(priv->host->node_id << 16 |
 				 ETHER1394_GASP_SPECIFIER_ID_HI);
-	p->data[1] = cpu_to_be32((ETHER1394_GASP_SPECIFIER_ID_LO << 24) |
+	p->data[1] = cpu_to_be32(ETHER1394_GASP_SPECIFIER_ID_LO << 24 |
 				 ETHER1394_GASP_VERSION);
 
-	/* Setting the node id to ALL_NODES (not LOCAL_BUS | ALL_NODES)
-	 * prevents hpsb_send_packet() from setting the speed to an arbitrary
-	 * value based on packet->node_id if packet->node_id is not set. */
-	p->node_id = ALL_NODES;
 	p->speed_code = priv->bc_sspd;
+
+	/* prevent hpsb_send_packet() from overriding our speed code */
+	p->node_id = LOCAL_BUS | ALL_NODES;
 }
 
-static inline void ether1394_free_packet(struct hpsb_packet *packet)
+static void ether1394_free_packet(struct hpsb_packet *packet)
 {
 	if (packet->tcode != TCODE_STREAM_DATA)
 		hpsb_free_tlabel(packet);
@@ -1539,7 +1454,7 @@ static int ether1394_send_packet(struct packet_task *ptask, unsigned int tx_len)
 		return -1;
 
 	if (ptask->tx_type == ETH1394_GASP) {
-		int length = tx_len + (2 * sizeof(quadlet_t));
+		int length = tx_len + 2 * sizeof(quadlet_t);
 
 		ether1394_prep_gasp_packet(packet, priv, ptask->skb, length);
 	} else if (ether1394_prep_write_packet(packet, priv->host,
@@ -1562,13 +1477,11 @@ static int ether1394_send_packet(struct packet_task *ptask, unsigned int tx_len)
 	return 0;
 }
 
-
 /* Task function to be run when a datagram transmission is completed */
-static inline void ether1394_dg_complete(struct packet_task *ptask, int fail)
+static void ether1394_dg_complete(struct packet_task *ptask, int fail)
 {
 	struct sk_buff *skb = ptask->skb;
-	struct net_device *dev = skb->dev;
-	struct eth1394_priv *priv = netdev_priv(dev);
+	struct eth1394_priv *priv = netdev_priv(skb->dev);
 	unsigned long flags;
 
 	/* Statistics */
@@ -1586,7 +1499,6 @@ static inline void ether1394_dg_complete(struct packet_task *ptask, int fail)
 	kmem_cache_free(packet_task_cache, ptask);
 }
 
-
 /* Callback for when a packet has been sent and the status of that packet is
  * known */
 static void ether1394_complete_cb(void *__ptask)
@@ -1614,19 +1526,15 @@ static void ether1394_complete_cb(void *__ptask)
 	}
 }
 
-
-
 /* Transmit a packet (called by kernel) */
-static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
+static int ether1394_tx(struct sk_buff *skb, struct net_device *dev)
 {
-	gfp_t kmflags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
 	struct eth1394hdr *eth;
 	struct eth1394_priv *priv = netdev_priv(dev);
 	__be16 proto;
 	unsigned long flags;
 	nodeid_t dest_node;
 	eth1394_tx_type tx_type;
-	int ret = 0;
 	unsigned int tx_len;
 	unsigned int max_payload;
 	u16 dg_size;
@@ -1635,29 +1543,24 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
 	struct eth1394_node_ref *node;
 	struct eth1394_node_info *node_info = NULL;
 
-	ptask = kmem_cache_alloc(packet_task_cache, kmflags);
-	if (ptask == NULL) {
-		ret = -ENOMEM;
+	ptask = kmem_cache_alloc(packet_task_cache, GFP_ATOMIC);
+	if (ptask == NULL)
 		goto fail;
-	}
 
 	/* XXX Ignore this for now. Noticed that when MacOSX is the IRM,
 	 * it does not set our validity bit. We need to compensate for
 	 * that somewhere else, but not in eth1394. */
 #if 0
-	if ((priv->host->csr.broadcast_channel & 0xc0000000) != 0xc0000000) {
-		ret = -EAGAIN;
+	if ((priv->host->csr.broadcast_channel & 0xc0000000) != 0xc0000000)
 		goto fail;
-	}
 #endif
 
-	if ((skb = skb_share_check (skb, kmflags)) == NULL) {
-		ret = -ENOMEM;
+	skb = skb_share_check(skb, GFP_ATOMIC);
+	if (!skb)
 		goto fail;
-	}
 
 	/* Get rid of the fake eth1394 header, but save a pointer */
-	eth = (struct eth1394hdr*)skb->data;
+	eth = (struct eth1394hdr *)skb->data;
 	skb_pull(skb, ETH1394_HLEN);
 
 	proto = eth->h_proto;
@@ -1672,7 +1575,7 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
 		tx_type = ETH1394_GASP;
 		dest_node = LOCAL_BUS | ALL_NODES;
 		max_payload = priv->bc_maxpayload - ETHER1394_GASP_OVERHEAD;
-		BUG_ON(max_payload < (512 - ETHER1394_GASP_OVERHEAD));
+		BUG_ON(max_payload < 512 - ETHER1394_GASP_OVERHEAD);
 		dgl = priv->bc_dgl;
 		if (max_payload < dg_size + hdr_type_len[ETH1394_HDR_LF_UF])
 			priv->bc_dgl++;
@@ -1681,19 +1584,17 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
 
 		node = eth1394_find_node_guid(&priv->ip_node_list,
 					      be64_to_cpu(guid));
-		if (!node) {
-			ret = -EAGAIN;
+		if (!node)
 			goto fail;
-		}
-		node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
-		if (node_info->fifo == CSR1212_INVALID_ADDR_SPACE) {
-			ret = -EAGAIN;
+
+		node_info =
+		    (struct eth1394_node_info *)node->ud->device.driver_data;
+		if (node_info->fifo == CSR1212_INVALID_ADDR_SPACE)
 			goto fail;
-		}
 
 		dest_node = node->ud->ne->nodeid;
 		max_payload = node_info->maxpayload;
-		BUG_ON(max_payload < (512 - ETHER1394_GASP_OVERHEAD));
+		BUG_ON(max_payload < 512 - ETHER1394_GASP_OVERHEAD);
 
 		dgl = node_info->dgl;
 		if (max_payload < dg_size + hdr_type_len[ETH1394_HDR_LF_UF])
@@ -1703,7 +1604,7 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
 
 	/* If this is an ARP packet, convert it */
 	if (proto == htons(ETH_P_ARP))
-		ether1394_arp_to_1394arp (skb, dev);
+		ether1394_arp_to_1394arp(skb, dev);
 
 	ptask->hdr.words.word1 = 0;
 	ptask->hdr.words.word2 = 0;
@@ -1726,9 +1627,8 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
 
 	ptask->tx_type = tx_type;
 	ptask->max_payload = max_payload;
-        ptask->outstanding_pkts = ether1394_encapsulate_prep(max_payload, proto,
-							     &ptask->hdr, dg_size,
-							     dgl);
+	ptask->outstanding_pkts = ether1394_encapsulate_prep(max_payload,
+					proto, &ptask->hdr, dg_size, dgl);
 
 	/* Add the encapsulation header to the fragment */
 	tx_len = ether1394_encapsulate(skb, max_payload, &ptask->hdr);
@@ -1737,7 +1637,7 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
 		goto fail;
 
 	netif_wake_queue(dev);
-	return 0;
+	return NETDEV_TX_OK;
 fail:
 	if (ptask)
 		kmem_cache_free(packet_task_cache, ptask);
@@ -1745,40 +1645,56 @@ fail:
 	if (skb != NULL)
 		dev_kfree_skb(skb);
 
-	spin_lock_irqsave (&priv->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 	priv->stats.tx_dropped++;
 	priv->stats.tx_errors++;
-	spin_unlock_irqrestore (&priv->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 
 	if (netif_queue_stopped(dev))
 		netif_wake_queue(dev);
 
-	return 0;  /* returning non-zero causes serious problems */
+	/*
+	 * FIXME: According to a patch from 2003-02-26, "returning non-zero
+	 * causes serious problems" here, allegedly.  Before that patch,
+	 * -ERRNO was returned which is not appropriate under Linux 2.6.
+	 * Perhaps more needs to be done?  Stop the queue in serious
+	 * conditions and restart it elsewhere?
+	 */
+	/* return NETDEV_TX_BUSY; */
+	return NETDEV_TX_OK;
 }
 
-static void ether1394_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+static void ether1394_get_drvinfo(struct net_device *dev,
+				  struct ethtool_drvinfo *info)
 {
-	strcpy (info->driver, driver_name);
-	/* FIXME XXX provide sane businfo */
-	strcpy (info->bus_info, "ieee1394");
+	strcpy(info->driver, driver_name);
+	strcpy(info->bus_info, "ieee1394"); /* FIXME provide more detail? */
 }
 
 static struct ethtool_ops ethtool_ops = {
 	.get_drvinfo = ether1394_get_drvinfo
 };
 
-static int __init ether1394_init_module (void)
+static int __init ether1394_init_module(void)
 {
-	packet_task_cache = kmem_cache_create("packet_task", sizeof(struct packet_task),
+	int err;
+
+	packet_task_cache = kmem_cache_create("packet_task",
+					      sizeof(struct packet_task),
 					      0, 0, NULL, NULL);
+	if (!packet_task_cache)
+		return -ENOMEM;
 
-	/* Register ourselves as a highlevel driver */
 	hpsb_register_highlevel(&eth1394_highlevel);
-
-	return hpsb_register_protocol(&eth1394_proto_driver);
+	err = hpsb_register_protocol(&eth1394_proto_driver);
+	if (err) {
+		hpsb_unregister_highlevel(&eth1394_highlevel);
+		kmem_cache_destroy(packet_task_cache);
+	}
+	return err;
 }
 
-static void __exit ether1394_exit_module (void)
+static void __exit ether1394_exit_module(void)
 {
 	hpsb_unregister_protocol(&eth1394_proto_driver);
 	hpsb_unregister_highlevel(&eth1394_highlevel);

drivers/ieee1394/eth1394.h

@@ -25,8 +25,11 @@
 #define __ETH1394_H
 
 #include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <asm/byteorder.h>
 
 #include "ieee1394.h"
+#include "ieee1394_types.h"
 
 /* Register for incoming packets. This is 4096 bytes, which supports up to
  * S3200 (per Table 16-3 of IEEE 1394b-2002). */
@@ -34,22 +37,15 @@
 
 /* GASP identifier numbers for IPv4 over IEEE 1394 */
 #define ETHER1394_GASP_SPECIFIER_ID	0x00005E
-#define ETHER1394_GASP_SPECIFIER_ID_HI	((ETHER1394_GASP_SPECIFIER_ID >> 8) & 0xffff)
-#define ETHER1394_GASP_SPECIFIER_ID_LO	(ETHER1394_GASP_SPECIFIER_ID & 0xff)
+#define ETHER1394_GASP_SPECIFIER_ID_HI	((0x00005E >> 8) & 0xffff)
+#define ETHER1394_GASP_SPECIFIER_ID_LO	(0x00005E & 0xff)
 #define ETHER1394_GASP_VERSION		1
 
-#define ETHER1394_GASP_OVERHEAD (2 * sizeof(quadlet_t))  /* GASP header overhead */
+#define ETHER1394_GASP_OVERHEAD	(2 * sizeof(quadlet_t))	/* for GASP header */
 
-#define ETHER1394_GASP_BUFFERS 16
+#define ETHER1394_GASP_BUFFERS	16
 
-/* rawiso buffer size - due to a limitation in rawiso, we must limit each
- * GASP buffer to be less than PAGE_SIZE. */
-#define ETHER1394_ISO_BUF_SIZE	ETHER1394_GASP_BUFFERS *                        \
-				   min((unsigned int)PAGE_SIZE,                 \
-				       2 * (1U << (priv->host->csr.max_rec + 1)))
-
-/* Node set == 64 */
-#define NODE_SET			(ALL_NODES + 1)
+#define NODE_SET		(ALL_NODES + 1)		/* Node set == 64 */
 
 enum eth1394_bc_states { ETHER1394_BC_ERROR,
 			 ETHER1394_BC_RUNNING,
@@ -85,19 +81,14 @@ struct eth1394hdr {
 	unsigned short	h_proto;		/* packet type ID field	*/
 }  __attribute__((packed));
 
-#ifdef __KERNEL__
-#include <linux/skbuff.h>
-
 static inline struct eth1394hdr *eth1394_hdr(const struct sk_buff *skb)
 {
 	return (struct eth1394hdr *)skb_mac_header(skb);
 }
-#endif
 
 typedef enum {ETH1394_GASP, ETH1394_WRREQ} eth1394_tx_type;
 
 /* IP1394 headers */
-#include <asm/byteorder.h>
 
 /* Unfragmented */
 #if defined __BIG_ENDIAN_BITFIELD

drivers/ieee1394/highlevel.c

@@ -70,8 +70,12 @@ static struct hl_host_info *hl_get_hostinfo(struct hpsb_highlevel *hl,
 	return NULL;
 }
 
-/* Returns a per host/driver data structure that was previously stored by
- * hpsb_create_hostinfo. */
+/**
+ * hpsb_get_hostinfo - retrieve a hostinfo pointer bound to this driver/host
+ *
+ * Returns a per @host and @hl driver data structure that was previously stored
+ * by hpsb_create_hostinfo.
+ */
 void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
 {
 	struct hl_host_info *hi = hl_get_hostinfo(hl, host);
@@ -79,7 +83,13 @@ void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
 	return hi ? hi->data : NULL;
 }
 
-/* If size is zero, then the return here is only valid for error checking */
+/**
+ * hpsb_create_hostinfo - allocate a hostinfo pointer bound to this driver/host
+ *
+ * Allocate a hostinfo pointer backed by memory with @data_size and bind it to
+ * to this @hl driver and @host.  If @data_size is zero, then the return here is
+ * only valid for error checking.
+ */
 void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			   size_t data_size)
 {
@@ -113,6 +123,11 @@ void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
 	return data;
 }
 
+/**
+ * hpsb_set_hostinfo - set the hostinfo pointer to something useful
+ *
+ * Usually follows a call to hpsb_create_hostinfo, where the size is 0.
+ */
 int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
 		      void *data)
 {
@@ -132,6 +147,11 @@ int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
 	return -EINVAL;
 }
 
+/**
+ * hpsb_destroy_hostinfo - free and remove a hostinfo pointer
+ *
+ * Free and remove the hostinfo pointer bound to this @hl driver and @host.
+ */
 void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
 {
 	struct hl_host_info *hi;
@@ -147,6 +167,12 @@ void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
 	return;
 }
 
+/**
+ * hpsb_set_hostinfo_key - set an alternate lookup key for an hostinfo
+ *
+ * Sets an alternate lookup key for the hostinfo bound to this @hl driver and
+ * @host.
+ */
 void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			   unsigned long key)
 {
@@ -158,6 +184,9 @@ void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host,
 	return;
 }
 
+/**
+ * hpsb_get_hostinfo_bykey - retrieve a hostinfo pointer by its alternate key
+ */
 void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key)
 {
 	struct hl_host_info *hi;
@@ -189,6 +218,12 @@ static int highlevel_for_each_host_reg(struct hpsb_host *host, void *__data)
 	return 0;
 }
 
+/**
+ * hpsb_register_highlevel - register highlevel driver
+ *
+ * The name pointer in @hl has to stay valid at all times because the string is
+ * not copied.
+ */
 void hpsb_register_highlevel(struct hpsb_highlevel *hl)
 {
 	unsigned long flags;
@@ -258,6 +293,9 @@ static int highlevel_for_each_host_unreg(struct hpsb_host *host, void *__data)
 	return 0;
 }
 
+/**
+ * hpsb_unregister_highlevel - unregister highlevel driver
+ */
 void hpsb_unregister_highlevel(struct hpsb_highlevel *hl)
 {
 	unsigned long flags;
@@ -273,6 +311,19 @@ void hpsb_unregister_highlevel(struct hpsb_highlevel *hl)
 	nodemgr_for_each_host(hl, highlevel_for_each_host_unreg);
 }
 
+/**
+ * hpsb_allocate_and_register_addrspace - alloc' and reg' a host address space
+ *
+ * @start and @end are 48 bit pointers and have to be quadlet aligned.
+ * @end points to the first address behind the handled addresses.  This
+ * function can be called multiple times for a single hpsb_highlevel @hl to
+ * implement sparse register sets.  The requested region must not overlap any
+ * previously allocated region, otherwise registering will fail.
+ *
+ * It returns true for successful allocation.  Address spaces can be
+ * unregistered with hpsb_unregister_addrspace.  All remaining address spaces
+ * are automatically deallocated together with the hpsb_highlevel @hl.
+ */
 u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
 					 struct hpsb_host *host,
 					 struct hpsb_address_ops *ops,
@@ -348,6 +399,19 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
 	return retval;
 }
 
+/**
+ * hpsb_register_addrspace - register a host address space
+ *
+ * @start and @end are 48 bit pointers and have to be quadlet aligned.
+ * @end points to the first address behind the handled addresses.  This
+ * function can be called multiple times for a single hpsb_highlevel @hl to
+ * implement sparse register sets.  The requested region must not overlap any
+ * previously allocated region, otherwise registering will fail.
+ *
+ * It returns true for successful allocation.  Address spaces can be
+ * unregistered with hpsb_unregister_addrspace.  All remaining address spaces
+ * are automatically deallocated together with the hpsb_highlevel @hl.
+ */
 int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			    struct hpsb_address_ops *ops, u64 start, u64 end)
 {
@@ -419,6 +483,11 @@ int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
 	return retval;
 }
 
+/**
+ * hpsb_listen_channel - enable receving a certain isochronous channel
+ *
+ * Reception is handled through the @hl's iso_receive op.
+ */
 int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			unsigned int channel)
 {
@@ -431,6 +500,9 @@ int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
 	return 0;
 }
 
+/**
+ * hpsb_unlisten_channel - disable receving a certain isochronous channel
+ */
 void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			   unsigned int channel)
 {
@@ -528,6 +600,17 @@ void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
 	read_unlock_irqrestore(&hl_irqs_lock, flags);
 }
 
+/*
+ * highlevel_read, highlevel_write, highlevel_lock, highlevel_lock64:
+ *
+ * These functions are called to handle transactions. They are called when a
+ * packet arrives.  The flags argument contains the second word of the first
+ * header quadlet of the incoming packet (containing transaction label, retry
+ * code, transaction code and priority).  These functions either return a
+ * response code or a negative number.  In the first case a response will be
+ * generated.  In the latter case, no response will be sent and the driver which
+ * handled the request will send the response itself.
+ */
 int highlevel_read(struct hpsb_host *host, int nodeid, void *data, u64 addr,
 		   unsigned int length, u16 flags)
 {

drivers/ieee1394/highlevel.h

@@ -99,16 +99,6 @@ struct hpsb_address_ops {
 void highlevel_add_host(struct hpsb_host *host);
 void highlevel_remove_host(struct hpsb_host *host);
 void highlevel_host_reset(struct hpsb_host *host);
-
-/*
- * These functions are called to handle transactions. They are called when a
- * packet arrives.  The flags argument contains the second word of the first
- * header quadlet of the incoming packet (containing transaction label, retry
- * code, transaction code and priority).  These functions either return a
- * response code or a negative number.  In the first case a response will be
- * generated.  In the latter case, no response will be sent and the driver which
- * handled the request will send the response itself.
- */
 int highlevel_read(struct hpsb_host *host, int nodeid, void *data, u64 addr,
 		   unsigned int length, u16 flags);
 int highlevel_write(struct hpsb_host *host, int nodeid, int destid, void *data,
@@ -119,30 +109,13 @@ int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
 int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store,
 		     u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
 		     u16 flags);
-
 void highlevel_iso_receive(struct hpsb_host *host, void *data, size_t length);
 void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
 			   void *data, size_t length);
 
-/*
- * Register highlevel driver.  The name pointer has to stay valid at all times
- * because the string is not copied.
- */
 void hpsb_register_highlevel(struct hpsb_highlevel *hl);
 void hpsb_unregister_highlevel(struct hpsb_highlevel *hl);
 
-/*
- * Register handlers for host address spaces.  Start and end are 48 bit pointers
- * and have to be quadlet aligned.  Argument "end" points to the first address
- * behind the handled addresses.  This function can be called multiple times for
- * a single hpsb_highlevel to implement sparse register sets.  The requested
- * region must not overlap any previously allocated region, otherwise
- * registering will fail.
- *
- * It returns true for successful allocation.  Address spaces can be
- * unregistered with hpsb_unregister_addrspace.  All remaining address spaces
- * are automatically deallocated together with the hpsb_highlevel.
- */
 u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
 					 struct hpsb_host *host,
 					 struct hpsb_address_ops *ops,
@@ -152,45 +125,19 @@ int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			    struct hpsb_address_ops *ops, u64 start, u64 end);
 int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			      u64 start);
-
-/*
- * Enable or disable receving a certain isochronous channel through the
- * iso_receive op.
- */
 int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
-			 unsigned int channel);
+			unsigned int channel);
 void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			   unsigned int channel);
 
-/* Retrieve a hostinfo pointer bound to this driver/host */
 void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host);
-
-/* Allocate a hostinfo pointer of data_size bound to this driver/host */
 void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			   size_t data_size);
-
-/* Free and remove the hostinfo pointer bound to this driver/host */
 void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host);
-
-/* Set an alternate lookup key for the hostinfo bound to this driver/host */
 void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host,
 			   unsigned long key);
-
-/* Retrieve the alternate lookup key for the hostinfo bound to this
- * driver/host */
-unsigned long hpsb_get_hostinfo_key(struct hpsb_highlevel *hl,
-				    struct hpsb_host *host);
-
-/* Retrieve a hostinfo pointer bound to this driver using its alternate key */
 void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key);
-
-/* Set the hostinfo pointer to something useful. Usually follows a call to
- * hpsb_create_hostinfo, where the size is 0. */
 int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
 		      void *data);
 
-/* Retrieve hpsb_host using a highlevel handle and a key */
-struct hpsb_host *hpsb_get_host_bykey(struct hpsb_highlevel *hl,
-				      unsigned long key);
-
 #endif /* IEEE1394_HIGHLEVEL_H */

drivers/ieee1394/hosts.c

@@ -94,14 +94,6 @@ static int alloc_hostnum_cb(struct hpsb_host *host, void *__data)
 	return 0;
 }
 
-/*
- * The pending_packet_queue is special in that it's processed
- * from hardirq context too (such as hpsb_bus_reset()). Hence
- * split the lock class from the usual networking skb-head
- * lock class by using a separate key for it:
- */
-static struct lock_class_key pending_packet_queue_key;
-
 static DEFINE_MUTEX(host_num_alloc);
 
 /**
@@ -137,9 +129,7 @@ struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
 	h->hostdata = h + 1;
 	h->driver = drv;
 
-	skb_queue_head_init(&h->pending_packet_queue);
-	lockdep_set_class(&h->pending_packet_queue.lock,
-			   &pending_packet_queue_key);
+	INIT_LIST_HEAD(&h->pending_packets);
 	INIT_LIST_HEAD(&h->addr_space);
 
 	for (i = 2; i < 16; i++)
@@ -190,7 +180,7 @@ int hpsb_add_host(struct hpsb_host *host)
 {
 	if (hpsb_default_host_entry(host))
 		return -ENOMEM;
-	hpsb_add_extra_config_roms(host);
+
 	highlevel_add_host(host);
 	return 0;
 }
@@ -212,12 +202,19 @@ void hpsb_remove_host(struct hpsb_host *host)
 
 	host->driver = &dummy_driver;
 	highlevel_remove_host(host);
-	hpsb_remove_extra_config_roms(host);
 
 	class_device_unregister(&host->class_dev);
 	device_unregister(&host->device);
 }
 
+/**
+ * hpsb_update_config_rom_image - updates configuration ROM image of a host
+ *
+ * Updates the configuration ROM image of a host.  rom_version must be the
+ * current version, otherwise it will fail with return value -1. If this
+ * host does not support config-rom-update, it will return -%EINVAL.
+ * Return value 0 indicates success.
+ */
 int hpsb_update_config_rom_image(struct hpsb_host *host)
 {
 	unsigned long reset_delay;

drivers/ieee1394/hosts.h

@@ -3,7 +3,6 @@
 
 #include <linux/device.h>
 #include <linux/list.h>
-#include <linux/skbuff.h>
 #include <linux/timer.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
@@ -25,8 +24,7 @@ struct hpsb_host {
 
 	atomic_t generation;
 
-	struct sk_buff_head pending_packet_queue;
-
+	struct list_head pending_packets;
 	struct timer_list timeout;
 	unsigned long timeout_interval;
 
@@ -202,12 +200,6 @@ struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
 int hpsb_add_host(struct hpsb_host *host);
 void hpsb_resume_host(struct hpsb_host *host);
 void hpsb_remove_host(struct hpsb_host *host);
-
-/* Updates the configuration rom image of a host.  rom_version must be the
- * current version, otherwise it will fail with return value -1. If this
- * host does not support config-rom-update, it will return -EINVAL.
- * Return value 0 indicates success.
- */
 int hpsb_update_config_rom_image(struct hpsb_host *host);
 
 #endif /* _IEEE1394_HOSTS_H */

drivers/ieee1394/ieee1394_core.c

@@ -30,7 +30,6 @@
 #include <linux/moduleparam.h>
 #include <linux/bitops.h>
 #include <linux/kdev_t.h>
-#include <linux/skbuff.h>
 #include <linux/suspend.h>
 #include <linux/kthread.h>
 #include <linux/preempt.h>
@@ -96,13 +95,15 @@ static void queue_packet_complete(struct hpsb_packet *packet);
 
 
 /**
- * hpsb_set_packet_complete_task - set the task that runs when a packet
- * completes. You cannot call this more than once on a single packet
- * before it is sent.
- *
+ * hpsb_set_packet_complete_task - set task that runs when a packet completes
  * @packet: the packet whose completion we want the task added to
  * @routine: function to call
  * @data: data (if any) to pass to the above function
+ *
+ * Set the task that runs when a packet completes. You cannot call this more
+ * than once on a single packet before it is sent.
+ *
+ * Typically, the complete @routine is responsible to call hpsb_free_packet().
  */
 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 				   void (*routine)(void *), void *data)
@@ -115,12 +116,12 @@ void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 
 /**
  * hpsb_alloc_packet - allocate new packet structure
- * @data_size: size of the data block to be allocated
+ * @data_size: size of the data block to be allocated, in bytes
  *
  * This function allocates, initializes and returns a new &struct hpsb_packet.
- * It can be used in interrupt context.  A header block is always included, its
- * size is big enough to contain all possible 1394 headers.  The data block is
- * only allocated when @data_size is not zero.
+ * It can be used in interrupt context.  A header block is always included and
+ * initialized with zeros.  Its size is big enough to contain all possible 1394
+ * headers.  The data block is only allocated if @data_size is not zero.
  *
  * For packets for which responses will be received the @data_size has to be big
  * enough to contain the response's data block since no further allocation
@@ -135,50 +136,49 @@ void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
  */
 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 {
-	struct hpsb_packet *packet = NULL;
-	struct sk_buff *skb;
+	struct hpsb_packet *packet;
 
 	data_size = ((data_size + 3) & ~3);
 
-	skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC);
-	if (skb == NULL)
+	packet = kzalloc(sizeof(*packet) + data_size, GFP_ATOMIC);
+	if (!packet)
 		return NULL;
 
-	memset(skb->data, 0, data_size + sizeof(*packet));
-
-	packet = (struct hpsb_packet *)skb->data;
-	packet->skb = skb;
-
-	packet->header = packet->embedded_header;
 	packet->state = hpsb_unused;
 	packet->generation = -1;
 	INIT_LIST_HEAD(&packet->driver_list);
+	INIT_LIST_HEAD(&packet->queue);
 	atomic_set(&packet->refcnt, 1);
 
 	if (data_size) {
-		packet->data = (quadlet_t *)(skb->data + sizeof(*packet));
-		packet->data_size = data_size;
+		packet->data = packet->embedded_data;
+		packet->allocated_data_size = data_size;
 	}
-
 	return packet;
 }
 
-
 /**
  * hpsb_free_packet - free packet and data associated with it
  * @packet: packet to free (is NULL safe)
  *
- * This function will free packet->data and finally the packet itself.
+ * Frees @packet->data only if it was allocated through hpsb_alloc_packet().
  */
 void hpsb_free_packet(struct hpsb_packet *packet)
 {
 	if (packet && atomic_dec_and_test(&packet->refcnt)) {
-		BUG_ON(!list_empty(&packet->driver_list));
-		kfree_skb(packet->skb);
+		BUG_ON(!list_empty(&packet->driver_list) ||
+		       !list_empty(&packet->queue));
+		kfree(packet);
 	}
 }
 
-
+/**
+ * hpsb_reset_bus - initiate bus reset on the given host
+ * @host: host controller whose bus to reset
+ * @type: one of enum reset_types
+ *
+ * Returns 1 if bus reset already in progress, 0 otherwise.
+ */
 int hpsb_reset_bus(struct hpsb_host *host, int type)
 {
 	if (!host->in_bus_reset) {
@@ -229,6 +229,14 @@ int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer,
 	return 0;
 }
 
+/**
+ * hpsb_bus_reset - notify a bus reset to the core
+ *
+ * For host driver module usage.  Safe to use in interrupt context, although
+ * quite complex; so you may want to run it in the bottom rather than top half.
+ *
+ * Returns 1 if bus reset already in progress, 0 otherwise.
+ */
 int hpsb_bus_reset(struct hpsb_host *host)
 {
 	if (host->in_bus_reset) {
@@ -405,6 +413,14 @@ static void build_speed_map(struct hpsb_host *host, int nodecount)
 }
 
 
+/**
+ * hpsb_selfid_received - hand over received selfid packet to the core
+ *
+ * For host driver module usage.  Safe to use in interrupt context.
+ *
+ * The host driver should have done a successful complement check (second
+ * quadlet is complement of first) beforehand.
+ */
 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 {
 	if (host->in_bus_reset) {
@@ -416,6 +432,15 @@ void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 	}
 }
 
+/**
+ * hpsb_selfid_complete - notify completion of SelfID stage to the core
+ *
+ * For host driver module usage.  Safe to use in interrupt context, although
+ * quite complex; so you may want to run it in the bottom rather than top half.
+ *
+ * Notify completion of SelfID stage to the core and report new physical ID
+ * and whether host is root now.
+ */
 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 {
 	if (!host->in_bus_reset)
@@ -462,30 +487,41 @@ void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 	highlevel_host_reset(host);
 }
 
+static spinlock_t pending_packets_lock = SPIN_LOCK_UNLOCKED;
 
+/**
+ * hpsb_packet_sent - notify core of sending a packet
+ *
+ * For host driver module usage.  Safe to call from within a transmit packet
+ * routine.
+ *
+ * Notify core of sending a packet.  Ackcode is the ack code returned for async
+ * transmits or ACKX_SEND_ERROR if the transmission failed completely; ACKX_NONE
+ * for other cases (internal errors that don't justify a panic).
+ */
 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 		      int ackcode)
 {
 	unsigned long flags;
 
-	spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
+	spin_lock_irqsave(&pending_packets_lock, flags);
 
 	packet->ack_code = ackcode;
 
 	if (packet->no_waiter || packet->state == hpsb_complete) {
 		/* if packet->no_waiter, must not have a tlabel allocated */
-		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+		spin_unlock_irqrestore(&pending_packets_lock, flags);
 		hpsb_free_packet(packet);
 		return;
 	}
 
 	atomic_dec(&packet->refcnt);	/* drop HC's reference */
-	/* here the packet must be on the host->pending_packet_queue */
+	/* here the packet must be on the host->pending_packets queue */
 
 	if (ackcode != ACK_PENDING || !packet->expect_response) {
 		packet->state = hpsb_complete;
-		__skb_unlink(packet->skb, &host->pending_packet_queue);
-		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+		list_del_init(&packet->queue);
+		spin_unlock_irqrestore(&pending_packets_lock, flags);
 		queue_packet_complete(packet);
 		return;
 	}
@@ -493,7 +529,7 @@ void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 	packet->state = hpsb_pending;
 	packet->sendtime = jiffies;
 
-	spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+	spin_unlock_irqrestore(&pending_packets_lock, flags);
 
 	mod_timer(&host->timeout, jiffies + host->timeout_interval);
 }
@@ -504,9 +540,10 @@ void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
  * @gapcnt: gap count value to set (-1 = don't set gap count)
  *
- * This function sends a PHY config packet on the bus through the specified host.
+ * This function sends a PHY config packet on the bus through the specified
+ * host.
  *
- * Return value: 0 for success or error number otherwise.
+ * Return value: 0 for success or negative error number otherwise.
  */
 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 {
@@ -567,12 +604,16 @@ int hpsb_send_packet(struct hpsb_packet *packet)
 	WARN_ON(packet->no_waiter && packet->expect_response);
 
 	if (!packet->no_waiter || packet->expect_response) {
+		unsigned long flags;
+
 		atomic_inc(&packet->refcnt);
 		/* Set the initial "sendtime" to 10 seconds from now, to
 		   prevent premature expiry.  If a packet takes more than
 		   10 seconds to hit the wire, we have bigger problems :) */
 		packet->sendtime = jiffies + 10 * HZ;
-		skb_queue_tail(&host->pending_packet_queue, packet->skb);
+		spin_lock_irqsave(&pending_packets_lock, flags);
+		list_add_tail(&packet->queue, &host->pending_packets);
+		spin_unlock_irqrestore(&pending_packets_lock, flags);
 	}
 
 	if (packet->node_id == host->node_id) {
@@ -621,6 +662,12 @@ static void complete_packet(void *data)
 	complete((struct completion *) data);
 }
 
+/**
+ * hpsb_send_packet_and_wait - enqueue packet, block until transaction completes
+ * @packet: packet to send
+ *
+ * Return value: 0 on success, negative errno on failure.
+ */
 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 {
 	struct completion done;
@@ -642,86 +689,97 @@ static void send_packet_nocare(struct hpsb_packet *packet)
 	}
 }
 
+static size_t packet_size_to_data_size(size_t packet_size, size_t header_size,
+				       size_t buffer_size, int tcode)
+{
+	size_t ret = packet_size <= header_size ? 0 : packet_size - header_size;
+
+	if (unlikely(ret > buffer_size))
+		ret = buffer_size;
+
+	if (unlikely(ret + header_size != packet_size))
+		HPSB_ERR("unexpected packet size %zd (tcode %d), bug?",
+			 packet_size, tcode);
+	return ret;
+}
 
 static void handle_packet_response(struct hpsb_host *host, int tcode,
 				   quadlet_t *data, size_t size)
 {
-	struct hpsb_packet *packet = NULL;
-	struct sk_buff *skb;
-	int tcode_match = 0;
-	int tlabel;
+	struct hpsb_packet *packet;
+	int tlabel = (data[0] >> 10) & 0x3f;
+	size_t header_size;
 	unsigned long flags;
 
-	tlabel = (data[0] >> 10) & 0x3f;
-
-	spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
+	spin_lock_irqsave(&pending_packets_lock, flags);
 
-	skb_queue_walk(&host->pending_packet_queue, skb) {
-		packet = (struct hpsb_packet *)skb->data;
-		if ((packet->tlabel == tlabel)
-		    && (packet->node_id == (data[1] >> 16))){
-			break;
-		}
-
-		packet = NULL;
-	}
+	list_for_each_entry(packet, &host->pending_packets, queue)
+		if (packet->tlabel == tlabel &&
+		    packet->node_id == (data[1] >> 16))
+			goto found;
 
-	if (packet == NULL) {
-		HPSB_DEBUG("unsolicited response packet received - no tlabel match");
-		dump_packet("contents", data, 16, -1);
-		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
-		return;
-	}
+	spin_unlock_irqrestore(&pending_packets_lock, flags);
+	HPSB_DEBUG("unsolicited response packet received - %s",
+		   "no tlabel match");
+	dump_packet("contents", data, 16, -1);
+	return;
 
+found:
 	switch (packet->tcode) {
 	case TCODE_WRITEQ:
 	case TCODE_WRITEB:
-		if (tcode != TCODE_WRITE_RESPONSE)
+		if (unlikely(tcode != TCODE_WRITE_RESPONSE))
 			break;
-		tcode_match = 1;
-		memcpy(packet->header, data, 12);
-		break;
+		header_size = 12;
+		size = 0;
+		goto dequeue;
+
 	case TCODE_READQ:
-		if (tcode != TCODE_READQ_RESPONSE)
+		if (unlikely(tcode != TCODE_READQ_RESPONSE))
 			break;
-		tcode_match = 1;
-		memcpy(packet->header, data, 16);
-		break;
+		header_size = 16;
+		size = 0;
+		goto dequeue;
+
 	case TCODE_READB:
-		if (tcode != TCODE_READB_RESPONSE)
+		if (unlikely(tcode != TCODE_READB_RESPONSE))
 			break;
-		tcode_match = 1;
-		BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
-		memcpy(packet->header, data, 16);
-		memcpy(packet->data, data + 4, size - 16);
-		break;
+		header_size = 16;
+		size = packet_size_to_data_size(size, header_size,
+						packet->allocated_data_size,
+						tcode);
+		goto dequeue;
+
 	case TCODE_LOCK_REQUEST:
-		if (tcode != TCODE_LOCK_RESPONSE)
+		if (unlikely(tcode != TCODE_LOCK_RESPONSE))
 			break;
-		tcode_match = 1;
-		size = min((size - 16), (size_t)8);
-		BUG_ON(packet->skb->len - sizeof(*packet) < size);
-		memcpy(packet->header, data, 16);
-		memcpy(packet->data, data + 4, size);
-		break;
+		header_size = 16;
+		size = packet_size_to_data_size(min(size, (size_t)(16 + 8)),
+						header_size,
+						packet->allocated_data_size,
+						tcode);
+		goto dequeue;
 	}
 
-	if (!tcode_match) {
-		spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
-		HPSB_INFO("unsolicited response packet received - tcode mismatch");
-		dump_packet("contents", data, 16, -1);
-		return;
-	}
+	spin_unlock_irqrestore(&pending_packets_lock, flags);
+	HPSB_DEBUG("unsolicited response packet received - %s",
+		   "tcode mismatch");
+	dump_packet("contents", data, 16, -1);
+	return;
 
-	__skb_unlink(skb, &host->pending_packet_queue);
+dequeue:
+	list_del_init(&packet->queue);
+	spin_unlock_irqrestore(&pending_packets_lock, flags);
 
 	if (packet->state == hpsb_queued) {
 		packet->sendtime = jiffies;
 		packet->ack_code = ACK_PENDING;
 	}
-
 	packet->state = hpsb_complete;
-	spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+
+	memcpy(packet->header, data, header_size);
+	if (size)
+		memcpy(packet->data, data + 4, size);
 
 	queue_packet_complete(packet);
 }
@@ -735,6 +793,7 @@ static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 	p = hpsb_alloc_packet(dsize);
 	if (unlikely(p == NULL)) {
 		/* FIXME - send data_error response */
+		HPSB_ERR("out of memory, cannot send response packet");
 		return NULL;
 	}
 
@@ -784,7 +843,6 @@ static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 {
 	PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
-	packet->header[2] = 0;
 	packet->header_size = 12;
 	packet->data_size = 0;
 }
@@ -801,12 +859,9 @@ static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extc
 	packet->data_size = length;
 }
 
-#define PREP_REPLY_PACKET(length) \
-		packet = create_reply_packet(host, data, length); \
-		if (packet == NULL) break
-
 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
-				   quadlet_t *data, size_t size, int write_acked)
+				   quadlet_t *data, size_t size,
+				   int write_acked)
 {
 	struct hpsb_packet *packet;
 	int length, rcode, extcode;
@@ -816,74 +871,72 @@ static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 	u16 flags = (u16) data[0];
 	u64 addr;
 
-	/* big FIXME - no error checking is done for an out of bounds length */
+	/* FIXME?
+	 * Out-of-bounds lengths are left for highlevel_read|write to cap. */
 
 	switch (tcode) {
 	case TCODE_WRITEQ:
 		addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
-		rcode = highlevel_write(host, source, dest, data+3,
+		rcode = highlevel_write(host, source, dest, data + 3,
 					addr, 4, flags);
-
-		if (!write_acked
-		    && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
-		    && (rcode >= 0)) {
-			/* not a broadcast write, reply */
-			PREP_REPLY_PACKET(0);
-			fill_async_write_resp(packet, rcode);
-			send_packet_nocare(packet);
-		}
-		break;
+		goto handle_write_request;
 
 	case TCODE_WRITEB:
 		addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
-		rcode = highlevel_write(host, source, dest, data+4,
-					addr, data[3]>>16, flags);
-
-		if (!write_acked
-		    && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
-		    && (rcode >= 0)) {
-			/* not a broadcast write, reply */
-			PREP_REPLY_PACKET(0);
+		rcode = highlevel_write(host, source, dest, data + 4,
+					addr, data[3] >> 16, flags);
+handle_write_request:
+		if (rcode < 0 || write_acked ||
+		    NODEID_TO_NODE(data[0] >> 16) == NODE_MASK)
+			return;
+		/* not a broadcast write, reply */
+		packet = create_reply_packet(host, data, 0);
+		if (packet) {
 			fill_async_write_resp(packet, rcode);
 			send_packet_nocare(packet);
 		}
-		break;
+		return;
 
 	case TCODE_READQ:
 		addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 		rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
+		if (rcode < 0)
+			return;
 
-		if (rcode >= 0) {
-			PREP_REPLY_PACKET(0);
+		packet = create_reply_packet(host, data, 0);
+		if (packet) {
 			fill_async_readquad_resp(packet, rcode, buffer);
 			send_packet_nocare(packet);
 		}
-		break;
+		return;
 
 	case TCODE_READB:
 		length = data[3] >> 16;
-		PREP_REPLY_PACKET(length);
+		packet = create_reply_packet(host, data, length);
+		if (!packet)
+			return;
 
 		addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 		rcode = highlevel_read(host, source, packet->data, addr,
 				       length, flags);
-
-		if (rcode >= 0) {
-			fill_async_readblock_resp(packet, rcode, length);
-			send_packet_nocare(packet);
-		} else {
+		if (rcode < 0) {
 			hpsb_free_packet(packet);
+			return;
 		}
-		break;
+		fill_async_readblock_resp(packet, rcode, length);
+		send_packet_nocare(packet);
+		return;
 
 	case TCODE_LOCK_REQUEST:
 		length = data[3] >> 16;
 		extcode = data[3] & 0xffff;
 		addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 
-		PREP_REPLY_PACKET(8);
+		packet = create_reply_packet(host, data, 8);
+		if (!packet)
+			return;
 
-		if ((extcode == 0) || (extcode >= 7)) {
+		if (extcode == 0 || extcode >= 7) {
 			/* let switch default handle error */
 			length = 0;
 		}
@@ -891,12 +944,12 @@ static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 		switch (length) {
 		case 4:
 			rcode = highlevel_lock(host, source, packet->data, addr,
-					       data[4], 0, extcode,flags);
+					       data[4], 0, extcode, flags);
 			fill_async_lock_resp(packet, rcode, extcode, 4);
 			break;
 		case 8:
-			if ((extcode != EXTCODE_FETCH_ADD)
-			    && (extcode != EXTCODE_LITTLE_ADD)) {
+			if (extcode != EXTCODE_FETCH_ADD &&
+			    extcode != EXTCODE_LITTLE_ADD) {
 				rcode = highlevel_lock(host, source,
 						       packet->data, addr,
 						       data[5], data[4],
@@ -920,29 +973,38 @@ static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 			break;
 		default:
 			rcode = RCODE_TYPE_ERROR;
-			fill_async_lock_resp(packet, rcode,
-					     extcode, 0);
+			fill_async_lock_resp(packet, rcode, extcode, 0);
 		}
 
-		if (rcode >= 0) {
-			send_packet_nocare(packet);
-		} else {
+		if (rcode < 0)
 			hpsb_free_packet(packet);
-		}
-		break;
+		else
+			send_packet_nocare(packet);
+		return;
 	}
-
 }
-#undef PREP_REPLY_PACKET
-
 
+/**
+ * hpsb_packet_received - hand over received packet to the core
+ *
+ * For host driver module usage.
+ *
+ * The contents of data are expected to be the full packet but with the CRCs
+ * left out (data block follows header immediately), with the header (i.e. the
+ * first four quadlets) in machine byte order and the data block in big endian.
+ * *@data can be safely overwritten after this call.
+ *
+ * If the packet is a write request, @write_acked is to be set to true if it was
+ * ack_complete'd already, false otherwise.  This argument is ignored for any
+ * other packet type.
+ */
 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 			  int write_acked)
 {
 	int tcode;
 
-	if (host->in_bus_reset) {
-		HPSB_INFO("received packet during reset; ignoring");
+	if (unlikely(host->in_bus_reset)) {
+		HPSB_DEBUG("received packet during reset; ignoring");
 		return;
 	}
 
@@ -976,23 +1038,27 @@ void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 		break;
 
 	default:
-		HPSB_NOTICE("received packet with bogus transaction code %d",
-			    tcode);
+		HPSB_DEBUG("received packet with bogus transaction code %d",
+			   tcode);
 		break;
 	}
 }
 
-
 static void abort_requests(struct hpsb_host *host)
 {
-	struct hpsb_packet *packet;
-	struct sk_buff *skb;
+	struct hpsb_packet *packet, *p;
+	struct list_head tmp;
+	unsigned long flags;
 
 	host->driver->devctl(host, CANCEL_REQUESTS, 0);
 
-	while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
-		packet = (struct hpsb_packet *)skb->data;
+	INIT_LIST_HEAD(&tmp);
+	spin_lock_irqsave(&pending_packets_lock, flags);
+	list_splice_init(&host->pending_packets, &tmp);
+	spin_unlock_irqrestore(&pending_packets_lock, flags);
 
+	list_for_each_entry_safe(packet, p, &tmp, queue) {
+		list_del_init(&packet->queue);
 		packet->state = hpsb_complete;
 		packet->ack_code = ACKX_ABORTED;
 		queue_packet_complete(packet);
@@ -1002,87 +1068,90 @@ static void abort_requests(struct hpsb_host *host)
 void abort_timedouts(unsigned long __opaque)
 {
 	struct hpsb_host *host = (struct hpsb_host *)__opaque;
-	unsigned long flags;
-	struct hpsb_packet *packet;
-	struct sk_buff *skb;
-	unsigned long expire;
+	struct hpsb_packet *packet, *p;
+	struct list_head tmp;
+	unsigned long flags, expire, j;
 
 	spin_lock_irqsave(&host->csr.lock, flags);
 	expire = host->csr.expire;
 	spin_unlock_irqrestore(&host->csr.lock, flags);
 
-	/* Hold the lock around this, since we aren't dequeuing all
-	 * packets, just ones we need. */
-	spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
-
-	while (!skb_queue_empty(&host->pending_packet_queue)) {
-		skb = skb_peek(&host->pending_packet_queue);
-
-		packet = (struct hpsb_packet *)skb->data;
+	j = jiffies;
+	INIT_LIST_HEAD(&tmp);
+	spin_lock_irqsave(&pending_packets_lock, flags);
 
-		if (time_before(packet->sendtime + expire, jiffies)) {
-			__skb_unlink(skb, &host->pending_packet_queue);
-			packet->state = hpsb_complete;
-			packet->ack_code = ACKX_TIMEOUT;
-			queue_packet_complete(packet);
-		} else {
+	list_for_each_entry_safe(packet, p, &host->pending_packets, queue) {
+		if (time_before(packet->sendtime + expire, j))
+			list_move_tail(&packet->queue, &tmp);
+		else
 			/* Since packets are added to the tail, the oldest
 			 * ones are first, always. When we get to one that
 			 * isn't timed out, the rest aren't either. */
 			break;
-		}
 	}
+	if (!list_empty(&host->pending_packets))
+		mod_timer(&host->timeout, j + host->timeout_interval);
 
-	if (!skb_queue_empty(&host->pending_packet_queue))
-		mod_timer(&host->timeout, jiffies + host->timeout_interval);
+	spin_unlock_irqrestore(&pending_packets_lock, flags);
 
-	spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
+	list_for_each_entry_safe(packet, p, &tmp, queue) {
+		list_del_init(&packet->queue);
+		packet->state = hpsb_complete;
+		packet->ack_code = ACKX_TIMEOUT;
+		queue_packet_complete(packet);
+	}
 }
 
-
-/* Kernel thread and vars, which handles packets that are completed. Only
- * packets that have a "complete" function are sent here. This way, the
- * completion is run out of kernel context, and doesn't block the rest of
- * the stack. */
 static struct task_struct *khpsbpkt_thread;
-static struct sk_buff_head hpsbpkt_queue;
+static LIST_HEAD(hpsbpkt_queue);
 
 static void queue_packet_complete(struct hpsb_packet *packet)
 {
+	unsigned long flags;
+
 	if (packet->no_waiter) {
 		hpsb_free_packet(packet);
 		return;
 	}
 	if (packet->complete_routine != NULL) {
-		skb_queue_tail(&hpsbpkt_queue, packet->skb);
+		spin_lock_irqsave(&pending_packets_lock, flags);
+		list_add_tail(&packet->queue, &hpsbpkt_queue);
+		spin_unlock_irqrestore(&pending_packets_lock, flags);
 		wake_up_process(khpsbpkt_thread);
 	}
 	return;
 }
 
+/*
+ * Kernel thread which handles packets that are completed.  This way the
+ * packet's "complete" function is asynchronously run in process context.
+ * Only packets which have a "complete" function may be sent here.
+ */
 static int hpsbpkt_thread(void *__hi)
 {
-	struct sk_buff *skb;
-	struct hpsb_packet *packet;
-	void (*complete_routine)(void*);
-	void *complete_data;
+	struct hpsb_packet *packet, *p;
+	struct list_head tmp;
+	int may_schedule;
 
 	current->flags |= PF_NOFREEZE;
 
 	while (!kthread_should_stop()) {
-		while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
-			packet = (struct hpsb_packet *)skb->data;
-
-			complete_routine = packet->complete_routine;
-			complete_data = packet->complete_data;
 
-			packet->complete_routine = packet->complete_data = NULL;
+		INIT_LIST_HEAD(&tmp);
+		spin_lock_irq(&pending_packets_lock);
+		list_splice_init(&hpsbpkt_queue, &tmp);
+		spin_unlock_irq(&pending_packets_lock);
 
-			complete_routine(complete_data);
+		list_for_each_entry_safe(packet, p, &tmp, queue) {
+			list_del_init(&packet->queue);
+			packet->complete_routine(packet->complete_data);
 		}
 
 		set_current_state(TASK_INTERRUPTIBLE);
-		if (!skb_peek(&hpsbpkt_queue))
+		spin_lock_irq(&pending_packets_lock);
+		may_schedule = list_empty(&hpsbpkt_queue);
+		spin_unlock_irq(&pending_packets_lock);
+		if (may_schedule)
 			schedule();
 		__set_current_state(TASK_RUNNING);
 	}
@@ -1093,8 +1162,6 @@ static int __init ieee1394_init(void)
 {
 	int i, ret;
 
-	skb_queue_head_init(&hpsbpkt_queue);
-
 	/* non-fatal error */
 	if (hpsb_init_config_roms()) {
 		HPSB_ERR("Failed to initialize some config rom entries.\n");
@@ -1268,7 +1335,6 @@ EXPORT_SYMBOL(hpsb_destroy_hostinfo);
 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
 EXPORT_SYMBOL(hpsb_set_hostinfo);
-EXPORT_SYMBOL(highlevel_host_reset);
 
 /** nodemgr.c **/
 EXPORT_SYMBOL(hpsb_node_fill_packet);
@@ -1311,11 +1377,10 @@ EXPORT_SYMBOL(hpsb_iso_wake);
 EXPORT_SYMBOL(hpsb_iso_recv_flush);
 
 /** csr1212.c **/
-EXPORT_SYMBOL(csr1212_new_directory);
 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
-EXPORT_SYMBOL(csr1212_release_keyval);
-EXPORT_SYMBOL(csr1212_read);
+EXPORT_SYMBOL(csr1212_get_keyval);
+EXPORT_SYMBOL(csr1212_new_directory);
 EXPORT_SYMBOL(csr1212_parse_keyval);
-EXPORT_SYMBOL(_csr1212_read_keyval);
-EXPORT_SYMBOL(_csr1212_destroy_keyval);
+EXPORT_SYMBOL(csr1212_read);
+EXPORT_SYMBOL(csr1212_release_keyval);

drivers/ieee1394/ieee1394_core.h

@@ -4,7 +4,6 @@
 #include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/list.h>
-#include <linux/skbuff.h>
 #include <linux/types.h>
 #include <asm/atomic.h>
 
@@ -13,7 +12,7 @@
 
 struct hpsb_packet {
 	/* This struct is basically read-only for hosts with the exception of
-	 * the data buffer contents and xnext - see below. */
+	 * the data buffer contents and driver_list. */
 
 	/* This can be used for host driver internal linking.
 	 *
@@ -49,134 +48,65 @@ struct hpsb_packet {
 	/* Speed to transmit with: 0 = 100Mbps, 1 = 200Mbps, 2 = 400Mbps */
 	unsigned speed_code:2;
 
-	/*
-	 * *header and *data are guaranteed to be 32-bit DMAable and may be
-	 * overwritten to allow in-place byte swapping.  Neither of these is
-	 * CRCed (the sizes also don't include CRC), but contain space for at
-	 * least one additional quadlet to allow in-place CRCing.  The memory is
-	 * also guaranteed to be DMA mappable.
-	 */
-	quadlet_t *header;
-	quadlet_t *data;
-	size_t header_size;
-	size_t data_size;
-
 	struct hpsb_host *host;
 	unsigned int generation;
 
 	atomic_t refcnt;
+	struct list_head queue;
 
 	/* Function (and possible data to pass to it) to call when this
 	 * packet is completed.  */
 	void (*complete_routine)(void *);
 	void *complete_data;
 
-	/* XXX This is just a hack at the moment */
-	struct sk_buff *skb;
-
 	/* Store jiffies for implementing bus timeouts. */
 	unsigned long sendtime;
 
-	quadlet_t embedded_header[5];
+	/* Sizes are in bytes. *data can be DMA-mapped. */
+	size_t allocated_data_size;	/* as allocated */
+	size_t data_size;		/* as filled in */
+	size_t header_size;		/* as filled in, not counting the CRC */
+	quadlet_t *data;
+	quadlet_t header[5];
+	quadlet_t embedded_data[0];	/* keep as last member */
 };
 
-/* Set a task for when a packet completes */
 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 				   void (*routine)(void *), void *data);
-
 static inline struct hpsb_packet *driver_packet(struct list_head *l)
 {
 	return list_entry(l, struct hpsb_packet, driver_list);
 }
-
 void abort_timedouts(unsigned long __opaque);
-
 struct hpsb_packet *hpsb_alloc_packet(size_t data_size);
 void hpsb_free_packet(struct hpsb_packet *packet);
 
-/*
- * Generation counter for the complete 1394 subsystem.  Generation gets
- * incremented on every change in the subsystem (e.g. bus reset).
+/**
+ * get_hpsb_generation - generation counter for the complete 1394 subsystem
  *
- * Use the functions, not the variable.
+ * Generation gets incremented on every change in the subsystem (notably on bus
+ * resets). Use the functions, not the variable.
  */
 static inline unsigned int get_hpsb_generation(struct hpsb_host *host)
 {
 	return atomic_read(&host->generation);
 }
 
-/*
- * Send a PHY configuration packet, return 0 on success, negative
- * errno on failure.
- */
 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt);
-
-/*
- * Queue packet for transmitting, return 0 on success, negative errno
- * on failure.
- */
 int hpsb_send_packet(struct hpsb_packet *packet);
-
-/*
- * Queue packet for transmitting, and block until the transaction
- * completes. Return 0 on success, negative errno on failure.
- */
 int hpsb_send_packet_and_wait(struct hpsb_packet *packet);
-
-/* Initiate bus reset on the given host.  Returns 1 if bus reset already in
- * progress, 0 otherwise. */
 int hpsb_reset_bus(struct hpsb_host *host, int type);
-
 int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer,
 			  u64 *local_time);
 
-/*
- * The following functions are exported for host driver module usage.  All of
- * them are safe to use in interrupt contexts, although some are quite
- * complicated so you may want to run them in bottom halves instead of calling
- * them directly.
- */
-
-/* Notify a bus reset to the core.  Returns 1 if bus reset already in progress,
- * 0 otherwise. */
 int hpsb_bus_reset(struct hpsb_host *host);
-
-/*
- * Hand over received selfid packet to the core.  Complement check (second
- * quadlet is complement of first) is expected to be done and successful.
- */
 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid);
-
-/*
- * Notify completion of SelfID stage to the core and report new physical ID
- * and whether host is root now.
- */
 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot);
-
-/*
- * Notify core of sending a packet.  Ackcode is the ack code returned for async
- * transmits or ACKX_SEND_ERROR if the transmission failed completely; ACKX_NONE
- * for other cases (internal errors that don't justify a panic).  Safe to call
- * from within a transmit packet routine.
- */
 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 		      int ackcode);
-
-/*
- * Hand over received packet to the core.  The contents of data are expected to
- * be the full packet but with the CRCs left out (data block follows header
- * immediately), with the header (i.e. the first four quadlets) in machine byte
- * order and the data block in big endian.  *data can be safely overwritten
- * after this call.
- *
- * If the packet is a write request, write_acked is to be set to true if it was
- * ack_complete'd already, false otherwise.  This arg is ignored for any other
- * packet type.
- */
 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 			  int write_acked);
 
-
 /*
  * CHARACTER DEVICE DISPATCHING
  *
@@ -217,7 +147,9 @@ void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 #define IEEE1394_EXPERIMENTAL_DEV MKDEV(IEEE1394_MAJOR, \
 					IEEE1394_MINOR_BLOCK_EXPERIMENTAL * 16)
 
-/* return the index (within a minor number block) of a file */
+/**
+ * ieee1394_file_to_instance - get the index within a minor number block
+ */
 static inline unsigned char ieee1394_file_to_instance(struct file *file)
 {
 	return file->f_path.dentry->d_inode->i_cindex;

drivers/ieee1394/ieee1394_transactions.c

@@ -10,11 +10,16 @@
  */
 
 #include <linux/bitops.h>
+#include <linux/compiler.h>
+#include <linux/hardirq.h>
 #include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/sched.h>  /* because linux/wait.h is broken if CONFIG_SMP=n */
 #include <linux/wait.h>
 
 #include <asm/bug.h>
 #include <asm/errno.h>
+#include <asm/system.h>
 
 #include "ieee1394.h"
 #include "ieee1394_types.h"
@@ -32,7 +37,7 @@
 #ifndef HPSB_DEBUG_TLABELS
 static
 #endif
-spinlock_t hpsb_tlabel_lock = SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(hpsb_tlabel_lock);
 
 static DECLARE_WAIT_QUEUE_HEAD(tlabel_wq);
 
@@ -212,6 +217,15 @@ void hpsb_free_tlabel(struct hpsb_packet *packet)
 	wake_up_interruptible(&tlabel_wq);
 }
 
+/**
+ * hpsb_packet_success - Make sense of the ack and reply codes
+ *
+ * Make sense of the ack and reply codes and return more convenient error codes:
+ * 0 = success.  -%EBUSY = node is busy, try again.  -%EAGAIN = error which can
+ * probably resolved by retry.  -%EREMOTEIO = node suffers from an internal
+ * error.  -%EACCES = this transaction is not allowed on requested address.
+ * -%EINVAL = invalid address at node.
+ */
 int hpsb_packet_success(struct hpsb_packet *packet)
 {
 	switch (packet->ack_code) {
@@ -364,6 +378,13 @@ struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 * buffer,
 	}
 	packet->host = host;
 
+	/* Because it is too difficult to determine all PHY speeds and link
+	 * speeds here, we use S100... */
+	packet->speed_code = IEEE1394_SPEED_100;
+
+	/* ...and prevent hpsb_send_packet() from overriding it. */
+	packet->node_id = LOCAL_BUS | ALL_NODES;
+
 	if (hpsb_get_tlabel(packet)) {
 		hpsb_free_packet(packet);
 		return NULL;
@@ -493,6 +514,16 @@ struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host,
  * avoid in kernel buffers for user space callers
  */
 
+/**
+ * hpsb_read - generic read function
+ *
+ * Recognizes the local node ID and act accordingly.  Automatically uses a
+ * quadlet read request if @length == 4 and and a block read request otherwise.
+ * It does not yet support lengths that are not a multiple of 4.
+ *
+ * You must explicitly specifiy the @generation for which the node ID is valid,
+ * to avoid sending packets to the wrong nodes when we race with a bus reset.
+ */
 int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
 	      u64 addr, quadlet_t * buffer, size_t length)
 {
@@ -532,6 +563,16 @@ int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
 	return retval;
 }
 
+/**
+ * hpsb_write - generic write function
+ *
+ * Recognizes the local node ID and act accordingly.  Automatically uses a
+ * quadlet write request if @length == 4 and and a block write request
+ * otherwise.  It does not yet support lengths that are not a multiple of 4.
+ *
+ * You must explicitly specifiy the @generation for which the node ID is valid,
+ * to avoid sending packets to the wrong nodes when we race with a bus reset.
+ */
 int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
 	       u64 addr, quadlet_t * buffer, size_t length)
 {

drivers/ieee1394/ieee1394_transactions.h

@@ -27,27 +27,7 @@ struct hpsb_packet *hpsb_make_writepacket(struct hpsb_host *host,
 struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer,
                                            int length, int channel, int tag,
 					   int sync);
-
-/*
- * hpsb_packet_success - Make sense of the ack and reply codes and
- * return more convenient error codes:
- * 0           success
- * -EBUSY      node is busy, try again
- * -EAGAIN     error which can probably resolved by retry
- * -EREMOTEIO  node suffers from an internal error
- * -EACCES     this transaction is not allowed on requested address
- * -EINVAL     invalid address at node
- */
 int hpsb_packet_success(struct hpsb_packet *packet);
-
-/*
- * The generic read and write functions.  All recognize the local node ID
- * and act accordingly.  Read and write automatically use quadlet commands if
- * length == 4 and and block commands otherwise (however, they do not yet
- * support lengths that are not a multiple of 4).  You must explicitly specifiy
- * the generation for which the node ID is valid, to avoid sending packets to
- * the wrong nodes when we race with a bus reset.
- */
 int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
 	      u64 addr, quadlet_t *buffer, size_t length);
 int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,

drivers/ieee1394/iso.c

@@ -10,11 +10,15 @@
  */
 
 #include <linux/pci.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 
 #include "hosts.h"
 #include "iso.h"
 
+/**
+ * hpsb_iso_stop - stop DMA
+ */
 void hpsb_iso_stop(struct hpsb_iso *iso)
 {
 	if (!(iso->flags & HPSB_ISO_DRIVER_STARTED))
@@ -25,6 +29,9 @@ void hpsb_iso_stop(struct hpsb_iso *iso)
 	iso->flags &= ~HPSB_ISO_DRIVER_STARTED;
 }
 
+/**
+ * hpsb_iso_shutdown - deallocate buffer and DMA context
+ */
 void hpsb_iso_shutdown(struct hpsb_iso *iso)
 {
 	if (iso->flags & HPSB_ISO_DRIVER_INIT) {
@@ -130,6 +137,9 @@ static struct hpsb_iso *hpsb_iso_common_init(struct hpsb_host *host,
 	return NULL;
 }
 
+/**
+ * hpsb_iso_n_ready - returns number of packets ready to send or receive
+ */
 int hpsb_iso_n_ready(struct hpsb_iso *iso)
 {
 	unsigned long flags;
@@ -142,6 +152,9 @@ int hpsb_iso_n_ready(struct hpsb_iso *iso)
 	return val;
 }
 
+/**
+ * hpsb_iso_xmit_init - allocate the buffer and DMA context
+ */
 struct hpsb_iso *hpsb_iso_xmit_init(struct hpsb_host *host,
 				    unsigned int data_buf_size,
 				    unsigned int buf_packets,
@@ -172,6 +185,11 @@ struct hpsb_iso *hpsb_iso_xmit_init(struct hpsb_host *host,
 	return NULL;
 }
 
+/**
+ * hpsb_iso_recv_init - allocate the buffer and DMA context
+ *
+ * Note, if channel = -1, multi-channel receive is enabled.
+ */
 struct hpsb_iso *hpsb_iso_recv_init(struct hpsb_host *host,
 				    unsigned int data_buf_size,
 				    unsigned int buf_packets,
@@ -199,6 +217,11 @@ struct hpsb_iso *hpsb_iso_recv_init(struct hpsb_host *host,
 	return NULL;
 }
 
+/**
+ * hpsb_iso_recv_listen_channel
+ *
+ * multi-channel only
+ */
 int hpsb_iso_recv_listen_channel(struct hpsb_iso *iso, unsigned char channel)
 {
 	if (iso->type != HPSB_ISO_RECV || iso->channel != -1 || channel >= 64)
@@ -206,6 +229,11 @@ int hpsb_iso_recv_listen_channel(struct hpsb_iso *iso, unsigned char channel)
 	return iso->host->driver->isoctl(iso, RECV_LISTEN_CHANNEL, channel);
 }
 
+/**
+ * hpsb_iso_recv_unlisten_channel
+ *
+ * multi-channel only
+ */
 int hpsb_iso_recv_unlisten_channel(struct hpsb_iso *iso, unsigned char channel)
 {
 	if (iso->type != HPSB_ISO_RECV || iso->channel != -1 || channel >= 64)
@@ -213,6 +241,11 @@ int hpsb_iso_recv_unlisten_channel(struct hpsb_iso *iso, unsigned char channel)
 	return iso->host->driver->isoctl(iso, RECV_UNLISTEN_CHANNEL, channel);
 }
 
+/**
+ * hpsb_iso_recv_set_channel_mask
+ *
+ * multi-channel only
+ */
 int hpsb_iso_recv_set_channel_mask(struct hpsb_iso *iso, u64 mask)
 {
 	if (iso->type != HPSB_ISO_RECV || iso->channel != -1)
@@ -221,6 +254,12 @@ int hpsb_iso_recv_set_channel_mask(struct hpsb_iso *iso, u64 mask)
 					 (unsigned long)&mask);
 }
 
+/**
+ * hpsb_iso_recv_flush - check for arrival of new packets
+ *
+ * check for arrival of new packets immediately (even if irq_interval
+ * has not yet been reached)
+ */
 int hpsb_iso_recv_flush(struct hpsb_iso *iso)
 {
 	if (iso->type != HPSB_ISO_RECV)
@@ -238,6 +277,9 @@ static int do_iso_xmit_start(struct hpsb_iso *iso, int cycle)
 	return retval;
 }
 
+/**
+ * hpsb_iso_xmit_start - start DMA
+ */
 int hpsb_iso_xmit_start(struct hpsb_iso *iso, int cycle, int prebuffer)
 {
 	if (iso->type != HPSB_ISO_XMIT)
@@ -270,6 +312,9 @@ int hpsb_iso_xmit_start(struct hpsb_iso *iso, int cycle, int prebuffer)
 	return 0;
 }
 
+/**
+ * hpsb_iso_recv_start - start DMA
+ */
 int hpsb_iso_recv_start(struct hpsb_iso *iso, int cycle, int tag_mask, int sync)
 {
 	int retval = 0;
@@ -306,8 +351,7 @@ int hpsb_iso_recv_start(struct hpsb_iso *iso, int cycle, int tag_mask, int sync)
 }
 
 /* check to make sure the user has not supplied bogus values of offset/len
-   that would cause the kernel to access memory outside the buffer */
-
+ * that would cause the kernel to access memory outside the buffer */
 static int hpsb_iso_check_offset_len(struct hpsb_iso *iso,
 				     unsigned int offset, unsigned short len,
 				     unsigned int *out_offset,
@@ -331,6 +375,12 @@ static int hpsb_iso_check_offset_len(struct hpsb_iso *iso,
 	return 0;
 }
 
+/**
+ * hpsb_iso_xmit_queue_packet - queue a packet for transmission.
+ *
+ * @offset is relative to the beginning of the DMA buffer, where the packet's
+ * data payload should already have been placed.
+ */
 int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len,
 			       u8 tag, u8 sy)
 {
@@ -380,6 +430,9 @@ int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len,
 	return rv;
 }
 
+/**
+ * hpsb_iso_xmit_sync - wait until all queued packets have been transmitted
+ */
 int hpsb_iso_xmit_sync(struct hpsb_iso *iso)
 {
 	if (iso->type != HPSB_ISO_XMIT)
@@ -390,6 +443,15 @@ int hpsb_iso_xmit_sync(struct hpsb_iso *iso)
 					iso->buf_packets);
 }
 
+/**
+ * hpsb_iso_packet_sent
+ *
+ * Available to low-level drivers.
+ *
+ * Call after a packet has been transmitted to the bus (interrupt context is
+ * OK).  @cycle is the _exact_ cycle the packet was sent on.  @error should be
+ * non-zero if some sort of error occurred when sending the packet.
+ */
 void hpsb_iso_packet_sent(struct hpsb_iso *iso, int cycle, int error)
 {
 	unsigned long flags;
@@ -413,6 +475,13 @@ void hpsb_iso_packet_sent(struct hpsb_iso *iso, int cycle, int error)
 	spin_unlock_irqrestore(&iso->lock, flags);
 }
 
+/**
+ * hpsb_iso_packet_received
+ *
+ * Available to low-level drivers.
+ *
+ * Call after a packet has been received (interrupt context is OK).
+ */
 void hpsb_iso_packet_received(struct hpsb_iso *iso, u32 offset, u16 len,
 			      u16 total_len, u16 cycle, u8 channel, u8 tag,
 			      u8 sy)
@@ -442,6 +511,11 @@ void hpsb_iso_packet_received(struct hpsb_iso *iso, u32 offset, u16 len,
 	spin_unlock_irqrestore(&iso->lock, flags);
 }
 
+/**
+ * hpsb_iso_recv_release_packets - release packets, reuse buffer
+ *
+ * @n_packets have been read out of the buffer, re-use the buffer space
+ */
 int hpsb_iso_recv_release_packets(struct hpsb_iso *iso, unsigned int n_packets)
 {
 	unsigned long flags;
@@ -477,6 +551,13 @@ int hpsb_iso_recv_release_packets(struct hpsb_iso *iso, unsigned int n_packets)
 	return rv;
 }
 
+/**
+ * hpsb_iso_wake
+ *
+ * Available to low-level drivers.
+ *
+ * Call to wake waiting processes after buffer space has opened up.
+ */
 void hpsb_iso_wake(struct hpsb_iso *iso)
 {
 	wake_up_interruptible(&iso->waitq);

drivers/ieee1394/iso.h

@@ -150,8 +150,6 @@ struct hpsb_iso {
 
 /* functions available to high-level drivers (e.g. raw1394) */
 
-/* allocate the buffer and DMA context */
-
 struct hpsb_iso* hpsb_iso_xmit_init(struct hpsb_host *host,
 				    unsigned int data_buf_size,
 				    unsigned int buf_packets,
@@ -159,8 +157,6 @@ struct hpsb_iso* hpsb_iso_xmit_init(struct hpsb_host *host,
 				    int speed,
 				    int irq_interval,
 				    void (*callback)(struct hpsb_iso*));
-
-/* note: if channel = -1, multi-channel receive is enabled */
 struct hpsb_iso* hpsb_iso_recv_init(struct hpsb_host *host,
 				    unsigned int data_buf_size,
 				    unsigned int buf_packets,
@@ -168,56 +164,29 @@ struct hpsb_iso* hpsb_iso_recv_init(struct hpsb_host *host,
 				    int dma_mode,
 				    int irq_interval,
 				    void (*callback)(struct hpsb_iso*));
-
-/* multi-channel only */
 int hpsb_iso_recv_listen_channel(struct hpsb_iso *iso, unsigned char channel);
 int hpsb_iso_recv_unlisten_channel(struct hpsb_iso *iso, unsigned char channel);
 int hpsb_iso_recv_set_channel_mask(struct hpsb_iso *iso, u64 mask);
-
-/* start/stop DMA */
 int hpsb_iso_xmit_start(struct hpsb_iso *iso, int start_on_cycle,
 			int prebuffer);
 int hpsb_iso_recv_start(struct hpsb_iso *iso, int start_on_cycle,
 			int tag_mask, int sync);
 void hpsb_iso_stop(struct hpsb_iso *iso);
-
-/* deallocate buffer and DMA context */
 void hpsb_iso_shutdown(struct hpsb_iso *iso);
-
-/* queue a packet for transmission.
- * 'offset' is relative to the beginning of the DMA buffer, where the packet's
- * data payload should already have been placed. */
 int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len,
 			       u8 tag, u8 sy);
-
-/* wait until all queued packets have been transmitted to the bus */
 int hpsb_iso_xmit_sync(struct hpsb_iso *iso);
-
-/* N packets have been read out of the buffer, re-use the buffer space */
-int  hpsb_iso_recv_release_packets(struct hpsb_iso *recv,
-				   unsigned int n_packets);
-
-/* check for arrival of new packets immediately (even if irq_interval
- * has not yet been reached) */
+int hpsb_iso_recv_release_packets(struct hpsb_iso *recv,
+				  unsigned int n_packets);
 int hpsb_iso_recv_flush(struct hpsb_iso *iso);
-
-/* returns # of packets ready to send or receive */
 int hpsb_iso_n_ready(struct hpsb_iso *iso);
 
 /* the following are callbacks available to low-level drivers */
 
-/* call after a packet has been transmitted to the bus (interrupt context is OK)
- * 'cycle' is the _exact_ cycle the packet was sent on
- * 'error' should be non-zero if some sort of error occurred when sending the
- *  packet */
 void hpsb_iso_packet_sent(struct hpsb_iso *iso, int cycle, int error);
-
-/* call after a packet has been received (interrupt context OK) */
 void hpsb_iso_packet_received(struct hpsb_iso *iso, u32 offset, u16 len,
 			      u16 total_len, u16 cycle, u8 channel, u8 tag,
 			      u8 sy);
-
-/* call to wake waiting processes after buffer space has opened up. */
 void hpsb_iso_wake(struct hpsb_iso *iso);
 
 #endif /* IEEE1394_ISO_H */

drivers/ieee1394/nodemgr.c

@@ -16,6 +16,7 @@
 #include <linux/kthread.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/mutex.h>
 #include <linux/freezer.h>
 #include <asm/atomic.h>
 
@@ -115,7 +116,7 @@ static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
 
 static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci)
 {
-	return (CSR1212_BE32_TO_CPU(bus_info_data[2]) >> 8) & 0x3;
+	return (be32_to_cpu(bus_info_data[2]) >> 8) & 0x3;
 }
 
 static struct csr1212_bus_ops nodemgr_csr_ops = {
@@ -580,7 +581,7 @@ static void nodemgr_create_drv_files(struct hpsb_protocol_driver *driver)
 			goto fail;
 	return;
 fail:
-	HPSB_ERR("Failed to add sysfs attribute for driver %s", driver->name);
+	HPSB_ERR("Failed to add sysfs attribute");
 }
 
 
@@ -604,8 +605,7 @@ static void nodemgr_create_ne_dev_files(struct node_entry *ne)
 			goto fail;
 	return;
 fail:
-	HPSB_ERR("Failed to add sysfs attribute for node %016Lx",
-		 (unsigned long long)ne->guid);
+	HPSB_ERR("Failed to add sysfs attribute");
 }
 
 
@@ -619,7 +619,7 @@ static void nodemgr_create_host_dev_files(struct hpsb_host *host)
 			goto fail;
 	return;
 fail:
-	HPSB_ERR("Failed to add sysfs attribute for host %d", host->id);
+	HPSB_ERR("Failed to add sysfs attribute");
 }
 
 
@@ -679,8 +679,7 @@ static void nodemgr_create_ud_dev_files(struct unit_directory *ud)
 	}
 	return;
 fail:
-	HPSB_ERR("Failed to add sysfs attributes for unit %s",
-		 ud->device.bus_id);
+	HPSB_ERR("Failed to add sysfs attribute");
 }
 
 
@@ -1144,13 +1143,13 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent
 		last_key_id = kv->key.id;
 	}
 
-	if (ne->vendor_name_kv &&
-	    device_create_file(&ne->device, &dev_attr_ne_vendor_name_kv))
-		goto fail;
-	return;
-fail:
-	HPSB_ERR("Failed to add sysfs attribute for node %016Lx",
-		 (unsigned long long)ne->guid);
+	if (ne->vendor_name_kv) {
+		int error = device_create_file(&ne->device,
+					       &dev_attr_ne_vendor_name_kv);
+
+		if (error && error != -EEXIST)
+			HPSB_ERR("Failed to add sysfs attribute");
+	}
 }
 
 #ifdef CONFIG_HOTPLUG
@@ -1738,7 +1737,19 @@ exit:
 	return 0;
 }
 
-int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *))
+/**
+ * nodemgr_for_each_host - call a function for each IEEE 1394 host
+ * @data: an address to supply to the callback
+ * @cb: function to call for each host
+ *
+ * Iterate the hosts, calling a given function with supplied data for each host.
+ * If the callback fails on a host, i.e. if it returns a non-zero value, the
+ * iteration is stopped.
+ *
+ * Return value: 0 on success, non-zero on failure (same as returned by last run
+ * of the callback).
+ */
+int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *))
 {
 	struct class_device *cdev;
 	struct hpsb_host *host;
@@ -1748,7 +1759,7 @@ int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *))
 	list_for_each_entry(cdev, &hpsb_host_class.children, node) {
 		host = container_of(cdev, struct hpsb_host, class_dev);
 
-		if ((error = cb(host, __data)))
+		if ((error = cb(host, data)))
 			break;
 	}
 	up(&hpsb_host_class.sem);
@@ -1756,7 +1767,7 @@ int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *))
 	return error;
 }
 
-/* The following four convenience functions use a struct node_entry
+/* The following two convenience functions use a struct node_entry
  * for addressing a node on the bus.  They are intended for use by any
  * process context, not just the nodemgr thread, so we need to be a
  * little careful when reading out the node ID and generation.  The
@@ -1771,12 +1782,20 @@ int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *))
  * ID's.
  */
 
-void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt)
+/**
+ * hpsb_node_fill_packet - fill some destination information into a packet
+ * @ne: destination node
+ * @packet: packet to fill in
+ *
+ * This will fill in the given, pre-initialised hpsb_packet with the current
+ * information from the node entry (host, node ID, bus generation number).
+ */
+void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet)
 {
-	pkt->host = ne->host;
-	pkt->generation = ne->generation;
+	packet->host = ne->host;
+	packet->generation = ne->generation;
 	barrier();
-	pkt->node_id = ne->nodeid;
+	packet->node_id = ne->nodeid;
 }
 
 int hpsb_node_write(struct node_entry *ne, u64 addr,

drivers/ieee1394/nodemgr.h

@@ -153,30 +153,10 @@ static inline int hpsb_node_entry_valid(struct node_entry *ne)
 {
 	return ne->generation == get_hpsb_generation(ne->host);
 }
-
-/*
- * This will fill in the given, pre-initialised hpsb_packet with the current
- * information from the node entry (host, node ID, generation number).  It will
- * return false if the node owning the GUID is not accessible (and not modify
- * the hpsb_packet) and return true otherwise.
- *
- * Note that packet sending may still fail in hpsb_send_packet if a bus reset
- * happens while you are trying to set up the packet (due to obsolete generation
- * number).  It will at least reliably fail so that you don't accidentally and
- * unknowingly send your packet to the wrong node.
- */
-void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt);
-
-int hpsb_node_read(struct node_entry *ne, u64 addr,
-		   quadlet_t *buffer, size_t length);
+void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet);
 int hpsb_node_write(struct node_entry *ne, u64 addr,
 		    quadlet_t *buffer, size_t length);
-int hpsb_node_lock(struct node_entry *ne, u64 addr,
-		   int extcode, quadlet_t *data, quadlet_t arg);
-
-/* Iterate the hosts, calling a given function with supplied data for each
- * host. */
-int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *));
+int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *));
 
 int init_ieee1394_nodemgr(void);
 void cleanup_ieee1394_nodemgr(void);

drivers/ieee1394/ohci1394.c

@@ -507,9 +507,8 @@ static void ohci_initialize(struct ti_ohci *ohci)
 	/* Set up self-id dma buffer */
 	reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->selfid_buf_bus);
 
-	/* enable self-id and phys */
-	reg_write(ohci, OHCI1394_LinkControlSet, OHCI1394_LinkControl_RcvSelfID |
-		  OHCI1394_LinkControl_RcvPhyPkt);
+	/* enable self-id */
+	reg_write(ohci, OHCI1394_LinkControlSet, OHCI1394_LinkControl_RcvSelfID);
 
 	/* Set the Config ROM mapping register */
 	reg_write(ohci, OHCI1394_ConfigROMmap, ohci->csr_config_rom_bus);
@@ -518,9 +517,6 @@ static void ohci_initialize(struct ti_ohci *ohci)
 	ohci->max_packet_size =
 		1<<(((reg_read(ohci, OHCI1394_BusOptions)>>12)&0xf)+1);
 		
-	/* Don't accept phy packets into AR request context */
-	reg_write(ohci, OHCI1394_LinkControlClear, 0x00000400);
-
 	/* Clear the interrupt mask */
 	reg_write(ohci, OHCI1394_IsoRecvIntMaskClear, 0xffffffff);
 	reg_write(ohci, OHCI1394_IsoRecvIntEventClear, 0xffffffff);
@@ -617,7 +613,7 @@ static void ohci_initialize(struct ti_ohci *ohci)
 #endif
 
 		PRINT(KERN_DEBUG, "Serial EEPROM has suspicious values, "
-                      "attempting to setting max_packet_size to 512 bytes");
+                      "attempting to set max_packet_size to 512 bytes");
 		reg_write(ohci, OHCI1394_BusOptions,
 			  (reg_read(ohci, OHCI1394_BusOptions) & 0xf007) | 0x8002);
 		ohci->max_packet_size = 512;
@@ -2377,6 +2373,7 @@ static irqreturn_t ohci_irq_handler(int irq, void *dev_id)
 	if (event & OHCI1394_postedWriteErr) {
 		PRINT(KERN_ERR, "physical posted write error");
 		/* no recovery strategy yet, had to involve protocol drivers */
+		event &= ~OHCI1394_postedWriteErr;
 	}
 	if (event & OHCI1394_cycleTooLong) {
 		if(printk_ratelimit())
@@ -3658,6 +3655,7 @@ static struct pci_driver ohci1394_pci_driver = {
 /* essentially the only purpose of this code is to allow another
    module to hook into ohci's interrupt handler */
 
+/* returns zero if successful, one if DMA context is locked up */
 int ohci1394_stop_context(struct ti_ohci *ohci, int reg, char *msg)
 {
 	int i=0;

drivers/ieee1394/ohci1394.h

@@ -461,9 +461,7 @@ int ohci1394_register_iso_tasklet(struct ti_ohci *ohci,
 				  struct ohci1394_iso_tasklet *tasklet);
 void ohci1394_unregister_iso_tasklet(struct ti_ohci *ohci,
 				     struct ohci1394_iso_tasklet *tasklet);
-
-/* returns zero if successful, one if DMA context is locked up */
-int ohci1394_stop_context      (struct ti_ohci *ohci, int reg, char *msg);
+int ohci1394_stop_context(struct ti_ohci *ohci, int reg, char *msg);
 struct ti_ohci *ohci1394_get_struct(int card_num);
 
 #endif

drivers/ieee1394/raw1394.c

@@ -938,7 +938,8 @@ static int handle_async_send(struct file_info *fi, struct pending_request *req)
 	int header_length = req->req.misc & 0xffff;
 	int expect_response = req->req.misc >> 16;
 
-	if ((header_length > req->req.length) || (header_length < 12)) {
+	if (header_length > req->req.length || header_length < 12 ||
+	    header_length > FIELD_SIZEOF(struct hpsb_packet, header)) {
 		req->req.error = RAW1394_ERROR_INVALID_ARG;
 		req->req.length = 0;
 		queue_complete_req(req);

drivers/ieee1394/sbp2.c

@@ -59,8 +59,10 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
+#include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/stat.h>
@@ -469,19 +471,13 @@ static void sbp2util_write_doorbell(struct work_struct *work)
 static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu)
 {
 	struct sbp2_fwhost_info *hi = lu->hi;
-	int i;
-	unsigned long flags, orbs;
 	struct sbp2_command_info *cmd;
+	int i, orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS;
 
-	orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS;
-
-	spin_lock_irqsave(&lu->cmd_orb_lock, flags);
 	for (i = 0; i < orbs; i++) {
-		cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
-		if (!cmd) {
-			spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
+		cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+		if (!cmd)
 			return -ENOMEM;
-		}
 		cmd->command_orb_dma = dma_map_single(hi->host->device.parent,
 						&cmd->command_orb,
 						sizeof(struct sbp2_command_orb),
@@ -489,11 +485,10 @@ static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu)
 		cmd->sge_dma = dma_map_single(hi->host->device.parent,
 					&cmd->scatter_gather_element,
 					sizeof(cmd->scatter_gather_element),
-					DMA_BIDIRECTIONAL);
+					DMA_TO_DEVICE);
 		INIT_LIST_HEAD(&cmd->list);
 		list_add_tail(&cmd->list, &lu->cmd_orb_completed);
 	}
-	spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
 	return 0;
 }
 
@@ -514,7 +509,7 @@ static void sbp2util_remove_command_orb_pool(struct sbp2_lu *lu)
 					 DMA_TO_DEVICE);
 			dma_unmap_single(host->device.parent, cmd->sge_dma,
 					 sizeof(cmd->scatter_gather_element),
-					 DMA_BIDIRECTIONAL);
+					 DMA_TO_DEVICE);
 			kfree(cmd);
 		}
 	spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
@@ -757,6 +752,11 @@ static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud)
 			SBP2_ERR("failed to register lower 4GB address range");
 			goto failed_alloc;
 		}
+#else
+		if (dma_set_mask(hi->host->device.parent, DMA_32BIT_MASK)) {
+			SBP2_ERR("failed to set 4GB DMA mask");
+			goto failed_alloc;
+		}
 #endif
 	}
 
@@ -865,11 +865,8 @@ static int sbp2_start_device(struct sbp2_lu *lu)
 	if (!lu->login_orb)
 		goto alloc_fail;
 
-	if (sbp2util_create_command_orb_pool(lu)) {
-		SBP2_ERR("sbp2util_create_command_orb_pool failed!");
-		sbp2_remove_device(lu);
-		return -ENOMEM;
-	}
+	if (sbp2util_create_command_orb_pool(lu))
+		goto alloc_fail;
 
 	/* Wait a second before trying to log in. Previously logged in
 	 * initiators need a chance to reconnect. */
@@ -1628,7 +1625,7 @@ static void sbp2_link_orb_command(struct sbp2_lu *lu,
 				   DMA_TO_DEVICE);
 	dma_sync_single_for_device(hi->host->device.parent, cmd->sge_dma,
 				   sizeof(cmd->scatter_gather_element),
-				   DMA_BIDIRECTIONAL);
+				   DMA_TO_DEVICE);
 
 	/* check to see if there are any previous orbs to use */
 	spin_lock_irqsave(&lu->cmd_orb_lock, flags);
@@ -1794,7 +1791,7 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid,
 					DMA_TO_DEVICE);
 		dma_sync_single_for_cpu(hi->host->device.parent, cmd->sge_dma,
 					sizeof(cmd->scatter_gather_element),
-					DMA_BIDIRECTIONAL);
+					DMA_TO_DEVICE);
 		/* Grab SCSI command pointers and check status. */
 		/*
 		 * FIXME: If the src field in the status is 1, the ORB DMA must
@@ -1926,7 +1923,7 @@ static void sbp2scsi_complete_all_commands(struct sbp2_lu *lu, u32 status)
 					DMA_TO_DEVICE);
 		dma_sync_single_for_cpu(hi->host->device.parent, cmd->sge_dma,
 					sizeof(cmd->scatter_gather_element),
-					DMA_BIDIRECTIONAL);
+					DMA_TO_DEVICE);
 		sbp2util_mark_command_completed(lu, cmd);
 		if (cmd->Current_SCpnt) {
 			cmd->Current_SCpnt->result = status << 16;
@@ -2057,7 +2054,7 @@ static int sbp2scsi_abort(struct scsi_cmnd *SCpnt)
 			dma_sync_single_for_cpu(hi->host->device.parent,
 					cmd->sge_dma,
 					sizeof(cmd->scatter_gather_element),
-					DMA_BIDIRECTIONAL);
+					DMA_TO_DEVICE);
 			sbp2util_mark_command_completed(lu, cmd);
 			if (cmd->Current_SCpnt) {
 				cmd->Current_SCpnt->result = DID_ABORT << 16;

drivers/ieee1394/sbp2.h

@@ -250,15 +250,15 @@ enum sbp2_dma_types {
 /* Per SCSI command */
 struct sbp2_command_info {
 	struct list_head list;
-	struct sbp2_command_orb command_orb ____cacheline_aligned;
-	dma_addr_t command_orb_dma ____cacheline_aligned;
+	struct sbp2_command_orb command_orb;
+	dma_addr_t command_orb_dma;
 	struct scsi_cmnd *Current_SCpnt;
 	void (*Current_done)(struct scsi_cmnd *);
 
 	/* Also need s/g structure for each sbp2 command */
 	struct sbp2_unrestricted_page_table
-			scatter_gather_element[SG_ALL] ____cacheline_aligned;
-	dma_addr_t sge_dma ____cacheline_aligned;
+		scatter_gather_element[SG_ALL] __attribute__((aligned(8)));
+	dma_addr_t sge_dma;
 	void *sge_buffer;
 	dma_addr_t cmd_dma;
 	enum sbp2_dma_types dma_type;