Merge branch 'for_david' of git://git.kernel.org/pub/scm/linux/kernel/git/kkeil/ISDN-2.6-net-next

drivers/isdn/Kconfig

@@ -21,8 +21,6 @@ menuconfig ISDN
 
 if ISDN
 
-source "drivers/isdn/mISDN/Kconfig"
-
 menuconfig ISDN_I4L
 	tristate "Old ISDN4Linux (deprecated)"
 	---help---
@@ -41,9 +39,9 @@ menuconfig ISDN_I4L
 	  It is still available, though, for use with adapters that are not
 	  supported by the new CAPI subsystem yet.
 
-if ISDN_I4L
+source "drivers/isdn/mISDN/Kconfig"
+
 source "drivers/isdn/i4l/Kconfig"
-endif
 
 menuconfig ISDN_CAPI
 	tristate "CAPI 2.0 subsystem"

drivers/isdn/act2000/capi.c

@@ -78,7 +78,6 @@ static actcapi_msgdsc valid_msg[] = {
 #endif
 	{{ 0x00, 0x00}, NULL},
 };
-#define num_valid_msg (sizeof(valid_msg)/sizeof(actcapi_msgdsc))
 #define num_valid_imsg 27 /* MANUFACTURER_IND */
 
 /*
@@ -1025,7 +1024,7 @@ actcapi_debug_msg(struct sk_buff *skb, int direction)
 #ifdef DEBUG_DUMP_SKB
 	dump_skb(skb);
 #endif
-	for (i = 0; i < num_valid_msg; i++)
+	for (i = 0; i < ARRAY_SIZE(valid_msg); i++)
 		if ((msg->hdr.cmd.cmd == valid_msg[i].cmd.cmd) &&
 		    (msg->hdr.cmd.subcmd == valid_msg[i].cmd.subcmd)) {
 			descr = valid_msg[i].description;

drivers/isdn/act2000/module.c

@@ -23,7 +23,6 @@ static unsigned short act2000_isa_ports[] =
         0x0200, 0x0240, 0x0280, 0x02c0, 0x0300, 0x0340, 0x0380,
         0xcfe0, 0xcfa0, 0xcf60, 0xcf20, 0xcee0, 0xcea0, 0xce60,
 };
-#define ISA_NRPORTS (sizeof(act2000_isa_ports)/sizeof(unsigned short))
 
 static act2000_card *cards = (act2000_card *) NULL;
 
@@ -686,21 +685,21 @@ act2000_addcard(int bus, int port, int irq, char *id)
 		 * This may result in more than one card detected.
 		 */
 		switch (bus) {
-			case ACT2000_BUS_ISA:
-				for (i = 0; i < ISA_NRPORTS; i++)
-					if (act2000_isa_detect(act2000_isa_ports[i])) {
-						printk(KERN_INFO
-						       "act2000: Detected ISA card at port 0x%x\n",
-						       act2000_isa_ports[i]);
-						act2000_alloccard(bus, act2000_isa_ports[i], irq, id);
-					}
-				break;
-			case ACT2000_BUS_MCA:
-			case ACT2000_BUS_PCMCIA:
-			default:
-				printk(KERN_WARNING
-				       "act2000: addcard: Invalid BUS type %d\n",
-				       bus);
+		case ACT2000_BUS_ISA:
+			for (i = 0; i < ARRAY_SIZE(act2000_isa_ports); i++)
+				if (act2000_isa_detect(act2000_isa_ports[i])) {
+					printk(KERN_INFO "act2000: Detected "
+						"ISA card at port 0x%x\n",
+						act2000_isa_ports[i]);
+					act2000_alloccard(bus,
+						act2000_isa_ports[i], irq, id);
+				}
+			break;
+		case ACT2000_BUS_MCA:
+		case ACT2000_BUS_PCMCIA:
+		default:
+			printk(KERN_WARNING
+				"act2000: addcard: Invalid BUS type %d\n", bus);
 		}
 	}
 	if (!cards)

drivers/isdn/hardware/eicon/message.c

@@ -551,9 +551,7 @@ word api_put(APPL   * appl, CAPI_MSG   * msg)
   dbug(1,dprintf("com=%x",msg->header.command));
 
   for(j=0;j<MAX_MSG_PARMS+1;j++) msg_parms[j].length = 0;
-  for(i=0, ret = _BAD_MSG;
-      i<(sizeof(ftable)/sizeof(struct _ftable));
-      i++) {
+  for(i=0, ret = _BAD_MSG; i < ARRAY_SIZE(ftable); i++) {
 
     if(ftable[i].command==msg->header.command) {
       /* break loop if the message is correct, otherwise continue scan  */

drivers/isdn/hardware/eicon/os_4bri.c

@@ -149,8 +149,7 @@ int diva_4bri_init_card(diva_os_xdi_adapter_t * a)
 	diva_os_xdi_adapter_t *diva_current;
 	diva_os_xdi_adapter_t *adapter_list[4];
 	PISDN_ADAPTER Slave;
-	unsigned long bar_length[sizeof(_4bri_bar_length) /
-				 sizeof(_4bri_bar_length[0])];
+	unsigned long bar_length[ARRAY_SIZE(_4bri_bar_length)];
 	int v2 = _4bri_is_rev_2_card(a->CardOrdinal);
 	int tasks = _4bri_is_rev_2_bri_card(a->CardOrdinal) ? 1 : MQ_INSTANCE_COUNT;
 	int factor = (tasks == 1) ? 1 : 2;

drivers/isdn/hardware/mISDN/Kconfig

@@ -39,3 +39,54 @@ config MISDN_HFCUSB
 	  Enable support for USB ISDN TAs with Cologne Chip AG's
 	  HFC-S USB ISDN Controller
 
+config MISDN_AVMFRITZ
+	tristate "Support for AVM FRITZ!CARD PCI"
+	depends on MISDN
+	depends on PCI
+	select MISDN_IPAC
+	help
+	  Enable support for AVMs FRITZ!CARD PCI cards
+
+config MISDN_SPEEDFAX
+	tristate "Support for Sedlbauer Speedfax+"
+	depends on MISDN
+	depends on PCI
+	select MISDN_IPAC
+	select MISDN_ISAR
+	help
+	  Enable support for Sedlbauer Speedfax+.
+
+config MISDN_INFINEON
+	tristate "Support for cards with Infineon chipset"
+	depends on MISDN
+	depends on PCI
+	select MISDN_IPAC
+	help
+	  Enable support for cards with ISAC + HSCX, IPAC or IPAC-SX
+	  chip from Infineon (former manufacturer Siemens).
+
+config MISDN_W6692
+	tristate "Support for cards with Winbond 6692"
+	depends on MISDN
+	depends on PCI
+	help
+	  Enable support for Winbond 6692 PCI chip based cards.
+
+config MISDN_NETJET
+	tristate "Support for NETJet cards"
+	depends on MISDN
+	depends on PCI
+	select MISDN_IPAC
+	select ISDN_HDLC
+	help
+	  Enable support for Traverse Technologies NETJet PCI cards.
+
+
+config MISDN_IPAC
+	tristate
+	depends on MISDN
+
+config MISDN_ISAR
+	tristate
+	depends on MISDN
+

drivers/isdn/hardware/mISDN/Makefile

@@ -6,3 +6,11 @@
 obj-$(CONFIG_MISDN_HFCPCI) += hfcpci.o
 obj-$(CONFIG_MISDN_HFCMULTI) += hfcmulti.o
 obj-$(CONFIG_MISDN_HFCUSB) += hfcsusb.o
+obj-$(CONFIG_MISDN_AVMFRITZ) += avmfritz.o
+obj-$(CONFIG_MISDN_SPEEDFAX) += speedfax.o
+obj-$(CONFIG_MISDN_INFINEON) += mISDNinfineon.o
+obj-$(CONFIG_MISDN_W6692) += w6692.o
+obj-$(CONFIG_MISDN_NETJET) += netjet.o
+# chip modules
+obj-$(CONFIG_MISDN_IPAC) += mISDNipac.o
+obj-$(CONFIG_MISDN_ISAR) += mISDNisar.o

drivers/isdn/hardware/mISDN/avmfritz.c

@@ -0,0 +1,1152 @@
+/*
+ * avm_fritz.c    low level stuff for AVM FRITZ!CARD PCI ISDN cards
+ *                Thanks to AVM, Berlin for informations
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include <asm/unaligned.h>
+#include "ipac.h"
+
+
+#define AVMFRITZ_REV	"2.1"
+
+static int AVM_cnt;
+static int debug;
+
+enum {
+	AVM_FRITZ_PCI,
+	AVM_FRITZ_PCIV2,
+};
+
+#define HDLC_FIFO		0x0
+#define HDLC_STATUS		0x4
+#define CHIP_WINDOW		0x10
+
+#define CHIP_INDEX		0x4
+#define AVM_HDLC_1		0x00
+#define AVM_HDLC_2		0x01
+#define AVM_ISAC_FIFO		0x02
+#define AVM_ISAC_REG_LOW	0x04
+#define AVM_ISAC_REG_HIGH	0x06
+
+#define AVM_STATUS0_IRQ_ISAC	0x01
+#define AVM_STATUS0_IRQ_HDLC	0x02
+#define AVM_STATUS0_IRQ_TIMER	0x04
+#define AVM_STATUS0_IRQ_MASK	0x07
+
+#define AVM_STATUS0_RESET	0x01
+#define AVM_STATUS0_DIS_TIMER	0x02
+#define AVM_STATUS0_RES_TIMER	0x04
+#define AVM_STATUS0_ENA_IRQ	0x08
+#define AVM_STATUS0_TESTBIT	0x10
+
+#define AVM_STATUS1_INT_SEL	0x0f
+#define AVM_STATUS1_ENA_IOM	0x80
+
+#define HDLC_MODE_ITF_FLG	0x01
+#define HDLC_MODE_TRANS		0x02
+#define HDLC_MODE_CCR_7		0x04
+#define HDLC_MODE_CCR_16	0x08
+#define HDLC_MODE_TESTLOOP	0x80
+
+#define HDLC_INT_XPR		0x80
+#define HDLC_INT_XDU		0x40
+#define HDLC_INT_RPR		0x20
+#define HDLC_INT_MASK		0xE0
+
+#define HDLC_STAT_RME		0x01
+#define HDLC_STAT_RDO		0x10
+#define HDLC_STAT_CRCVFRRAB	0x0E
+#define HDLC_STAT_CRCVFR	0x06
+#define HDLC_STAT_RML_MASK	0x3f00
+
+#define HDLC_CMD_XRS		0x80
+#define HDLC_CMD_XME		0x01
+#define HDLC_CMD_RRS		0x20
+#define HDLC_CMD_XML_MASK	0x3f00
+#define HDLC_FIFO_SIZE		32
+
+/* Fritz PCI v2.0 */
+
+#define AVM_HDLC_FIFO_1		0x10
+#define AVM_HDLC_FIFO_2		0x18
+
+#define AVM_HDLC_STATUS_1	0x14
+#define AVM_HDLC_STATUS_2	0x1c
+
+#define AVM_ISACX_INDEX		0x04
+#define AVM_ISACX_DATA		0x08
+
+/* data struct */
+#define LOG_SIZE		63
+
+struct hdlc_stat_reg {
+#ifdef __BIG_ENDIAN
+	u8 fill;
+	u8 mode;
+	u8 xml;
+	u8 cmd;
+#else
+	u8 cmd;
+	u8 xml;
+	u8 mode;
+	u8 fill;
+#endif
+} __attribute__((packed));
+
+struct hdlc_hw {
+	union {
+		u32 ctrl;
+		struct hdlc_stat_reg sr;
+	} ctrl;
+	u32 stat;
+};
+
+struct fritzcard {
+	struct list_head	list;
+	struct pci_dev		*pdev;
+	char			name[MISDN_MAX_IDLEN];
+	u8			type;
+	u8			ctrlreg;
+	u16			irq;
+	u32			irqcnt;
+	u32			addr;
+	spinlock_t		lock; /* hw lock */
+	struct isac_hw		isac;
+	struct hdlc_hw		hdlc[2];
+	struct bchannel		bch[2];
+	char			log[LOG_SIZE + 1];
+};
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+
+static void
+_set_debug(struct fritzcard *card)
+{
+	card->isac.dch.debug = debug;
+	card->bch[0].debug = debug;
+	card->bch[1].debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+	int ret;
+	struct fritzcard *card;
+
+	ret = param_set_uint(val, kp);
+	if (!ret) {
+		read_lock(&card_lock);
+		list_for_each_entry(card, &Cards, list)
+			_set_debug(card);
+		read_unlock(&card_lock);
+	}
+	return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(AVMFRITZ_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "avmfritz debug mask");
+
+/* Interface functions */
+
+static u8
+ReadISAC_V1(void *p, u8 offset)
+{
+	struct fritzcard *fc = p;
+	u8 idx = (offset > 0x2f) ? AVM_ISAC_REG_HIGH : AVM_ISAC_REG_LOW;
+
+	outb(idx, fc->addr + CHIP_INDEX);
+	return inb(fc->addr + CHIP_WINDOW + (offset & 0xf));
+}
+
+static void
+WriteISAC_V1(void *p, u8 offset, u8 value)
+{
+	struct fritzcard *fc = p;
+	u8 idx = (offset > 0x2f) ? AVM_ISAC_REG_HIGH : AVM_ISAC_REG_LOW;
+
+	outb(idx, fc->addr + CHIP_INDEX);
+	outb(value, fc->addr + CHIP_WINDOW + (offset & 0xf));
+}
+
+static void
+ReadFiFoISAC_V1(void *p, u8 off, u8 *data, int size)
+{
+	struct fritzcard *fc = p;
+
+	outb(AVM_ISAC_FIFO, fc->addr + CHIP_INDEX);
+	insb(fc->addr + CHIP_WINDOW, data, size);
+}
+
+static void
+WriteFiFoISAC_V1(void *p, u8 off, u8 *data, int size)
+{
+	struct fritzcard *fc = p;
+
+	outb(AVM_ISAC_FIFO, fc->addr + CHIP_INDEX);
+	outsb(fc->addr + CHIP_WINDOW, data, size);
+}
+
+static u8
+ReadISAC_V2(void *p, u8 offset)
+{
+	struct fritzcard *fc = p;
+
+	outl(offset, fc->addr + AVM_ISACX_INDEX);
+	return 0xff & inl(fc->addr + AVM_ISACX_DATA);
+}
+
+static void
+WriteISAC_V2(void *p, u8 offset, u8 value)
+{
+	struct fritzcard *fc = p;
+
+	outl(offset, fc->addr + AVM_ISACX_INDEX);
+	outl(value, fc->addr + AVM_ISACX_DATA);
+}
+
+static void
+ReadFiFoISAC_V2(void *p, u8 off, u8 *data, int size)
+{
+	struct fritzcard *fc = p;
+	int i;
+
+	outl(off, fc->addr + AVM_ISACX_INDEX);
+	for (i = 0; i < size; i++)
+		data[i] = 0xff & inl(fc->addr + AVM_ISACX_DATA);
+}
+
+static void
+WriteFiFoISAC_V2(void *p, u8 off, u8 *data, int size)
+{
+	struct fritzcard *fc = p;
+	int i;
+
+	outl(off, fc->addr + AVM_ISACX_INDEX);
+	for (i = 0; i < size; i++)
+		outl(data[i], fc->addr + AVM_ISACX_DATA);
+}
+
+static struct bchannel *
+Sel_BCS(struct fritzcard *fc, u32 channel)
+{
+	if (test_bit(FLG_ACTIVE, &fc->bch[0].Flags) &&
+		(fc->bch[0].nr & channel))
+		return &fc->bch[0];
+	else if (test_bit(FLG_ACTIVE, &fc->bch[1].Flags) &&
+		(fc->bch[1].nr & channel))
+		return &fc->bch[1];
+	else
+		return NULL;
+}
+
+static inline void
+__write_ctrl_pci(struct fritzcard *fc, struct hdlc_hw *hdlc, u32 channel) {
+	u32 idx = channel == 2 ? AVM_HDLC_2 : AVM_HDLC_1;
+
+	outl(idx, fc->addr + CHIP_INDEX);
+	outl(hdlc->ctrl.ctrl, fc->addr + CHIP_WINDOW + HDLC_STATUS);
+}
+
+static inline void
+__write_ctrl_pciv2(struct fritzcard *fc, struct hdlc_hw *hdlc, u32 channel) {
+	outl(hdlc->ctrl.ctrl, fc->addr + (channel == 2 ? AVM_HDLC_STATUS_2 :
+		AVM_HDLC_STATUS_1));
+}
+
+void
+write_ctrl(struct bchannel *bch, int which) {
+	struct fritzcard *fc = bch->hw;
+	struct hdlc_hw *hdlc;
+
+	hdlc = &fc->hdlc[(bch->nr - 1) & 1];
+	pr_debug("%s: hdlc %c wr%x ctrl %x\n", fc->name, '@' + bch->nr,
+		which, hdlc->ctrl.ctrl);
+	switch (fc->type) {
+	case AVM_FRITZ_PCIV2:
+		__write_ctrl_pciv2(fc, hdlc, bch->nr);
+		break;
+	case AVM_FRITZ_PCI:
+		__write_ctrl_pci(fc, hdlc, bch->nr);
+		break;
+	}
+}
+
+
+static inline u32
+__read_status_pci(u_long addr, u32 channel)
+{
+	outl(channel == 2 ? AVM_HDLC_2 : AVM_HDLC_1, addr + CHIP_INDEX);
+	return inl(addr + CHIP_WINDOW + HDLC_STATUS);
+}
+
+static inline u32
+__read_status_pciv2(u_long addr, u32 channel)
+{
+	return inl(addr + (channel == 2 ? AVM_HDLC_STATUS_2 :
+		AVM_HDLC_STATUS_1));
+}
+
+
+static u32
+read_status(struct fritzcard *fc, u32 channel)
+{
+	switch (fc->type) {
+	case AVM_FRITZ_PCIV2:
+		return __read_status_pciv2(fc->addr, channel);
+	case AVM_FRITZ_PCI:
+		return __read_status_pci(fc->addr, channel);
+	}
+	/* dummy */
+	return 0;
+}
+
+static void
+enable_hwirq(struct fritzcard *fc)
+{
+	fc->ctrlreg |= AVM_STATUS0_ENA_IRQ;
+	outb(fc->ctrlreg, fc->addr + 2);
+}
+
+static void
+disable_hwirq(struct fritzcard *fc)
+{
+	fc->ctrlreg &= ~AVM_STATUS0_ENA_IRQ;
+	outb(fc->ctrlreg, fc->addr + 2);
+}
+
+static int
+modehdlc(struct bchannel *bch, int protocol)
+{
+	struct fritzcard *fc = bch->hw;
+	struct hdlc_hw *hdlc;
+
+	hdlc = &fc->hdlc[(bch->nr - 1) & 1];
+	pr_debug("%s: hdlc %c protocol %x-->%x ch %d\n", fc->name,
+		'@' + bch->nr, bch->state, protocol, bch->nr);
+	hdlc->ctrl.ctrl = 0;
+	switch (protocol) {
+	case -1: /* used for init */
+		bch->state = -1;
+	case ISDN_P_NONE:
+		if (bch->state == ISDN_P_NONE)
+			break;
+		hdlc->ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
+		hdlc->ctrl.sr.mode = HDLC_MODE_TRANS;
+		write_ctrl(bch, 5);
+		bch->state = ISDN_P_NONE;
+		test_and_clear_bit(FLG_HDLC, &bch->Flags);
+		test_and_clear_bit(FLG_TRANSPARENT, &bch->Flags);
+		break;
+	case ISDN_P_B_RAW:
+		bch->state = protocol;
+		hdlc->ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
+		hdlc->ctrl.sr.mode = HDLC_MODE_TRANS;
+		write_ctrl(bch, 5);
+		hdlc->ctrl.sr.cmd = HDLC_CMD_XRS;
+		write_ctrl(bch, 1);
+		hdlc->ctrl.sr.cmd = 0;
+		test_and_set_bit(FLG_TRANSPARENT, &bch->Flags);
+		break;
+	case ISDN_P_B_HDLC:
+		bch->state = protocol;
+		hdlc->ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
+		hdlc->ctrl.sr.mode = HDLC_MODE_ITF_FLG;
+		write_ctrl(bch, 5);
+		hdlc->ctrl.sr.cmd = HDLC_CMD_XRS;
+		write_ctrl(bch, 1);
+		hdlc->ctrl.sr.cmd = 0;
+		test_and_set_bit(FLG_HDLC, &bch->Flags);
+		break;
+	default:
+		pr_info("%s: protocol not known %x\n", fc->name, protocol);
+		return -ENOPROTOOPT;
+	}
+	return 0;
+}
+
+static void
+hdlc_empty_fifo(struct bchannel *bch, int count)
+{
+	u32 *ptr;
+	u8 *p;
+	u32  val, addr;
+	int cnt = 0;
+	struct fritzcard *fc = bch->hw;
+
+	pr_debug("%s: %s %d\n", fc->name, __func__, count);
+	if (!bch->rx_skb) {
+		bch->rx_skb = mI_alloc_skb(bch->maxlen, GFP_ATOMIC);
+		if (!bch->rx_skb) {
+			pr_info("%s: B receive out of memory\n",
+				fc->name);
+			return;
+		}
+	}
+	if ((bch->rx_skb->len + count) > bch->maxlen) {
+		pr_debug("%s: overrun %d\n", fc->name,
+			bch->rx_skb->len + count);
+		return;
+	}
+	p = skb_put(bch->rx_skb, count);
+	ptr = (u32 *)p;
+	if (AVM_FRITZ_PCIV2 == fc->type)
+		addr = fc->addr + (bch->nr == 2 ?
+			AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1);
+	else {
+		addr = fc->addr + CHIP_WINDOW;
+		outl(bch->nr == 2 ? AVM_HDLC_2 : AVM_HDLC_1, fc->addr);
+	}
+	while (cnt < count) {
+		val = le32_to_cpu(inl(addr));
+		put_unaligned(val, ptr);
+		ptr++;
+		cnt += 4;
+	}
+	if (debug & DEBUG_HW_BFIFO) {
+		snprintf(fc->log, LOG_SIZE, "B%1d-recv %s %d ",
+			bch->nr, fc->name, count);
+		print_hex_dump_bytes(fc->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+}
+
+static void
+hdlc_fill_fifo(struct bchannel *bch)
+{
+	struct fritzcard *fc = bch->hw;
+	struct hdlc_hw *hdlc;
+	int count, cnt = 0;
+	u8 *p;
+	u32 *ptr, val, addr;
+
+	hdlc = &fc->hdlc[(bch->nr - 1) & 1];
+	if (!bch->tx_skb)
+		return;
+	count = bch->tx_skb->len - bch->tx_idx;
+	if (count <= 0)
+		return;
+	p = bch->tx_skb->data + bch->tx_idx;
+	hdlc->ctrl.sr.cmd &= ~HDLC_CMD_XME;
+	if (count > HDLC_FIFO_SIZE) {
+		count = HDLC_FIFO_SIZE;
+	} else {
+		if (test_bit(FLG_HDLC, &bch->Flags))
+			hdlc->ctrl.sr.cmd |= HDLC_CMD_XME;
+	}
+	pr_debug("%s: %s %d/%d/%d", fc->name, __func__, count,
+		bch->tx_idx, bch->tx_skb->len);
+	ptr = (u32 *)p;
+	bch->tx_idx += count;
+	hdlc->ctrl.sr.xml = ((count == HDLC_FIFO_SIZE) ? 0 : count);
+	if (AVM_FRITZ_PCIV2 == fc->type) {
+		__write_ctrl_pciv2(fc, hdlc, bch->nr);
+		addr = fc->addr + (bch->nr == 2 ?
+			AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1);
+	} else {
+		__write_ctrl_pci(fc, hdlc, bch->nr);
+		addr = fc->addr + CHIP_WINDOW;
+	}
+	while (cnt < count) {
+		val = get_unaligned(ptr);
+		outl(cpu_to_le32(val), addr);
+		ptr++;
+		cnt += 4;
+	}
+	if (debug & DEBUG_HW_BFIFO) {
+		snprintf(fc->log, LOG_SIZE, "B%1d-send %s %d ",
+			bch->nr, fc->name, count);
+		print_hex_dump_bytes(fc->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+}
+
+static void
+HDLC_irq_xpr(struct bchannel *bch)
+{
+	if (bch->tx_skb && bch->tx_idx < bch->tx_skb->len)
+		hdlc_fill_fifo(bch);
+	else {
+		if (bch->tx_skb) {
+			/* send confirm, on trans, free on hdlc. */
+			if (test_bit(FLG_TRANSPARENT, &bch->Flags))
+				confirm_Bsend(bch);
+			dev_kfree_skb(bch->tx_skb);
+		}
+		if (get_next_bframe(bch))
+			hdlc_fill_fifo(bch);
+	}
+}
+
+static void
+HDLC_irq(struct bchannel *bch, u32 stat)
+{
+	struct fritzcard *fc = bch->hw;
+	int		len;
+	struct hdlc_hw	*hdlc;
+
+	hdlc = &fc->hdlc[(bch->nr - 1) & 1];
+	pr_debug("%s: ch%d stat %#x\n", fc->name, bch->nr, stat);
+	if (stat & HDLC_INT_RPR) {
+		if (stat & HDLC_STAT_RDO) {
+			hdlc->ctrl.sr.xml = 0;
+			hdlc->ctrl.sr.cmd |= HDLC_CMD_RRS;
+			write_ctrl(bch, 1);
+			hdlc->ctrl.sr.cmd &= ~HDLC_CMD_RRS;
+			write_ctrl(bch, 1);
+			if (bch->rx_skb)
+				skb_trim(bch->rx_skb, 0);
+		} else {
+			len = (stat & HDLC_STAT_RML_MASK) >> 8;
+			if (!len)
+				len = 32;
+			hdlc_empty_fifo(bch, len);
+			if (!bch->rx_skb)
+				goto handle_tx;
+			if ((stat & HDLC_STAT_RME) || test_bit(FLG_TRANSPARENT,
+			    &bch->Flags)) {
+				if (((stat & HDLC_STAT_CRCVFRRAB) ==
+				    HDLC_STAT_CRCVFR) ||
+				    test_bit(FLG_TRANSPARENT, &bch->Flags)) {
+					recv_Bchannel(bch, 0);
+				} else {
+					pr_debug("%s: got invalid frame\n",
+						fc->name);
+					skb_trim(bch->rx_skb, 0);
+				}
+			}
+		}
+	}
+handle_tx:
+	if (stat & HDLC_INT_XDU) {
+		/* Here we lost an TX interrupt, so
+		 * restart transmitting the whole frame on HDLC
+		 * in transparent mode we send the next data
+		 */
+		if (bch->tx_skb)
+			pr_debug("%s: ch%d XDU len(%d) idx(%d) Flags(%lx)\n",
+				fc->name, bch->nr, bch->tx_skb->len,
+				bch->tx_idx, bch->Flags);
+		else
+			pr_debug("%s: ch%d XDU no tx_skb Flags(%lx)\n",
+				fc->name, bch->nr, bch->Flags);
+		if (bch->tx_skb && bch->tx_skb->len) {
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				bch->tx_idx = 0;
+		}
+		hdlc->ctrl.sr.xml = 0;
+		hdlc->ctrl.sr.cmd |= HDLC_CMD_XRS;
+		write_ctrl(bch, 1);
+		hdlc->ctrl.sr.cmd &= ~HDLC_CMD_XRS;
+		HDLC_irq_xpr(bch);
+		return;
+	} else if (stat & HDLC_INT_XPR)
+		HDLC_irq_xpr(bch);
+}
+
+static inline void
+HDLC_irq_main(struct fritzcard *fc)
+{
+	u32 stat;
+	struct bchannel *bch;
+
+	stat = read_status(fc, 1);
+	if (stat & HDLC_INT_MASK) {
+		bch = Sel_BCS(fc, 1);
+		if (bch)
+			HDLC_irq(bch, stat);
+		else
+			pr_debug("%s: spurious ch1 IRQ\n", fc->name);
+	}
+	stat = read_status(fc, 2);
+	if (stat & HDLC_INT_MASK) {
+		bch = Sel_BCS(fc, 2);
+		if (bch)
+			HDLC_irq(bch, stat);
+		else
+			pr_debug("%s: spurious ch2 IRQ\n", fc->name);
+	}
+}
+
+static irqreturn_t
+avm_fritz_interrupt(int intno, void *dev_id)
+{
+	struct fritzcard *fc = dev_id;
+	u8 val;
+	u8 sval;
+
+	spin_lock(&fc->lock);
+	sval = inb(fc->addr + 2);
+	pr_debug("%s: irq stat0 %x\n", fc->name, sval);
+	if ((sval & AVM_STATUS0_IRQ_MASK) == AVM_STATUS0_IRQ_MASK) {
+		/* shared  IRQ from other HW */
+		spin_unlock(&fc->lock);
+		return IRQ_NONE;
+	}
+	fc->irqcnt++;
+
+	if (!(sval & AVM_STATUS0_IRQ_ISAC)) {
+		val = ReadISAC_V1(fc, ISAC_ISTA);
+		mISDNisac_irq(&fc->isac, val);
+	}
+	if (!(sval & AVM_STATUS0_IRQ_HDLC))
+		HDLC_irq_main(fc);
+	spin_unlock(&fc->lock);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+avm_fritzv2_interrupt(int intno, void *dev_id)
+{
+	struct fritzcard *fc = dev_id;
+	u8 val;
+	u8 sval;
+
+	spin_lock(&fc->lock);
+	sval = inb(fc->addr + 2);
+	pr_debug("%s: irq stat0 %x\n", fc->name, sval);
+	if (!(sval & AVM_STATUS0_IRQ_MASK)) {
+		/* shared  IRQ from other HW */
+		spin_unlock(&fc->lock);
+		return IRQ_NONE;
+	}
+	fc->irqcnt++;
+
+	if (sval & AVM_STATUS0_IRQ_HDLC)
+		HDLC_irq_main(fc);
+	if (sval & AVM_STATUS0_IRQ_ISAC) {
+		val = ReadISAC_V2(fc, ISACX_ISTA);
+		mISDNisac_irq(&fc->isac, val);
+	}
+	if (sval & AVM_STATUS0_IRQ_TIMER) {
+		pr_debug("%s: timer irq\n", fc->name);
+		outb(fc->ctrlreg | AVM_STATUS0_RES_TIMER, fc->addr + 2);
+		udelay(1);
+		outb(fc->ctrlreg, fc->addr + 2);
+	}
+	spin_unlock(&fc->lock);
+	return IRQ_HANDLED;
+}
+
+static int
+avm_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct fritzcard *fc = bch->hw;
+	int ret = -EINVAL;
+	struct mISDNhead *hh = mISDN_HEAD_P(skb);
+	u32 id;
+	u_long flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(&fc->lock, flags);
+		ret = bchannel_senddata(bch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			hdlc_fill_fifo(bch);
+			ret = 0;
+			spin_unlock_irqrestore(&fc->lock, flags);
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(&fc->lock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		spin_lock_irqsave(&fc->lock, flags);
+		if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
+			ret = modehdlc(bch, ch->protocol);
+		else
+			ret = 0;
+		spin_unlock_irqrestore(&fc->lock, flags);
+		if (!ret)
+			_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+				NULL, GFP_KERNEL);
+		break;
+	case PH_DEACTIVATE_REQ:
+		spin_lock_irqsave(&fc->lock, flags);
+		mISDN_clear_bchannel(bch);
+		modehdlc(bch, ISDN_P_NONE);
+		spin_unlock_irqrestore(&fc->lock, flags);
+		_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
+			NULL, GFP_KERNEL);
+		ret = 0;
+		break;
+	}
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static void
+inithdlc(struct fritzcard *fc)
+{
+	modehdlc(&fc->bch[0], -1);
+	modehdlc(&fc->bch[1], -1);
+}
+
+void
+clear_pending_hdlc_ints(struct fritzcard *fc)
+{
+	u32 val;
+
+	val = read_status(fc, 1);
+	pr_debug("%s: HDLC 1 STA %x\n", fc->name, val);
+	val = read_status(fc, 2);
+	pr_debug("%s: HDLC 2 STA %x\n", fc->name, val);
+}
+
+static void
+reset_avm(struct fritzcard *fc)
+{
+	switch (fc->type) {
+	case AVM_FRITZ_PCI:
+		fc->ctrlreg = AVM_STATUS0_RESET | AVM_STATUS0_DIS_TIMER;
+		break;
+	case AVM_FRITZ_PCIV2:
+		fc->ctrlreg = AVM_STATUS0_RESET;
+		break;
+	}
+	if (debug & DEBUG_HW)
+		pr_notice("%s: reset\n", fc->name);
+	disable_hwirq(fc);
+	mdelay(5);
+	switch (fc->type) {
+	case AVM_FRITZ_PCI:
+		fc->ctrlreg = AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER;
+		disable_hwirq(fc);
+		outb(AVM_STATUS1_ENA_IOM, fc->addr + 3);
+		break;
+	case AVM_FRITZ_PCIV2:
+		fc->ctrlreg = 0;
+		disable_hwirq(fc);
+		break;
+	}
+	mdelay(1);
+	if (debug & DEBUG_HW)
+		pr_notice("%s: S0/S1 %x/%x\n", fc->name,
+			inb(fc->addr + 2), inb(fc->addr + 3));
+}
+
+static int
+init_card(struct fritzcard *fc)
+{
+	int		ret, cnt = 3;
+	u_long		flags;
+
+	reset_avm(fc); /* disable IRQ */
+	if (fc->type == AVM_FRITZ_PCIV2)
+		ret = request_irq(fc->irq, avm_fritzv2_interrupt,
+			IRQF_SHARED, fc->name, fc);
+	else
+		ret = request_irq(fc->irq, avm_fritz_interrupt,
+			IRQF_SHARED, fc->name, fc);
+	if (ret) {
+		pr_info("%s: couldn't get interrupt %d\n",
+			fc->name, fc->irq);
+		return ret;
+	}
+	while (cnt--) {
+		spin_lock_irqsave(&fc->lock, flags);
+		ret = fc->isac.init(&fc->isac);
+		if (ret) {
+			spin_unlock_irqrestore(&fc->lock, flags);
+			pr_info("%s: ISAC init failed with %d\n",
+				fc->name, ret);
+			break;
+		}
+		clear_pending_hdlc_ints(fc);
+		inithdlc(fc);
+		enable_hwirq(fc);
+		/* RESET Receiver and Transmitter */
+		if (AVM_FRITZ_PCIV2 == fc->type) {
+			WriteISAC_V2(fc, ISACX_MASK, 0);
+			WriteISAC_V2(fc, ISACX_CMDRD, 0x41);
+		} else {
+			WriteISAC_V1(fc, ISAC_MASK, 0);
+			WriteISAC_V1(fc, ISAC_CMDR, 0x41);
+		}
+		spin_unlock_irqrestore(&fc->lock, flags);
+		/* Timeout 10ms */
+		msleep_interruptible(10);
+		if (debug & DEBUG_HW)
+			pr_notice("%s: IRQ %d count %d\n", fc->name,
+				fc->irq, fc->irqcnt);
+		if (!fc->irqcnt) {
+			pr_info("%s: IRQ(%d) getting no IRQs during init %d\n",
+				fc->name, fc->irq, 3 - cnt);
+			reset_avm(fc);
+		} else
+			return 0;
+	}
+	free_irq(fc->irq, fc);
+	return -EIO;
+}
+
+static int
+channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
+{
+	int ret = 0;
+	struct fritzcard *fc = bch->hw;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	/* Nothing implemented yet */
+	case MISDN_CTRL_FILL_EMPTY:
+	default:
+		pr_info("%s: %s unknown Op %x\n", fc->name, __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+avm_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct fritzcard *fc = bch->hw;
+	int ret = -EINVAL;
+	u_long flags;
+
+	pr_debug("%s: %s cmd:%x %p\n", fc->name, __func__, cmd, arg);
+	switch (cmd) {
+	case CLOSE_CHANNEL:
+		test_and_clear_bit(FLG_OPEN, &bch->Flags);
+		if (test_bit(FLG_ACTIVE, &bch->Flags)) {
+			spin_lock_irqsave(&fc->lock, flags);
+			mISDN_freebchannel(bch);
+			test_and_clear_bit(FLG_TX_BUSY, &bch->Flags);
+			test_and_clear_bit(FLG_ACTIVE, &bch->Flags);
+			modehdlc(bch, ISDN_P_NONE);
+			spin_unlock_irqrestore(&fc->lock, flags);
+		}
+		ch->protocol = ISDN_P_NONE;
+		ch->peer = NULL;
+		module_put(THIS_MODULE);
+		ret = 0;
+		break;
+	case CONTROL_CHANNEL:
+		ret = channel_bctrl(bch, arg);
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x)\n", fc->name, __func__, cmd);
+	}
+	return ret;
+}
+
+static int
+channel_ctrl(struct fritzcard  *fc, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = MISDN_CTRL_LOOP;
+		break;
+	case MISDN_CTRL_LOOP:
+		/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
+		if (cq->channel < 0 || cq->channel > 3) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = fc->isac.ctrl(&fc->isac, HW_TESTLOOP, cq->channel);
+		break;
+	default:
+		pr_info("%s: %s unknown Op %x\n", fc->name, __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+open_bchannel(struct fritzcard *fc, struct channel_req *rq)
+{
+	struct bchannel		*bch;
+
+	if (rq->adr.channel > 2)
+		return -EINVAL;
+	if (rq->protocol == ISDN_P_NONE)
+		return -EINVAL;
+	bch = &fc->bch[rq->adr.channel - 1];
+	if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+		return -EBUSY; /* b-channel can be only open once */
+	test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
+	bch->ch.protocol = rq->protocol;
+	rq->ch = &bch->ch;
+	return 0;
+}
+
+/*
+ * device control function
+ */
+static int
+avm_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct mISDNdevice	*dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel		*dch = container_of(dev, struct dchannel, dev);
+	struct fritzcard	*fc = dch->hw;
+	struct channel_req	*rq;
+	int			err = 0;
+
+	pr_debug("%s: %s cmd:%x %p\n", fc->name, __func__, cmd, arg);
+	switch (cmd) {
+	case OPEN_CHANNEL:
+		rq = arg;
+		if (rq->protocol == ISDN_P_TE_S0)
+			err = fc->isac.open(&fc->isac, rq);
+		else
+			err = open_bchannel(fc, rq);
+		if (err)
+			break;
+		if (!try_module_get(THIS_MODULE))
+			pr_info("%s: cannot get module\n", fc->name);
+		break;
+	case CLOSE_CHANNEL:
+		pr_debug("%s: dev(%d) close from %p\n", fc->name, dch->dev.id,
+			__builtin_return_address(0));
+		module_put(THIS_MODULE);
+		break;
+	case CONTROL_CHANNEL:
+		err = channel_ctrl(fc, arg);
+		break;
+	default:
+		pr_debug("%s: %s unknown command %x\n",
+			fc->name, __func__, cmd);
+		return -EINVAL;
+	}
+	return err;
+}
+
+int
+setup_fritz(struct fritzcard *fc)
+{
+	u32 val, ver;
+
+	if (!request_region(fc->addr, 32, fc->name)) {
+		pr_info("%s: AVM config port %x-%x already in use\n",
+			fc->name, fc->addr, fc->addr + 31);
+		return -EIO;
+	}
+	switch (fc->type) {
+	case AVM_FRITZ_PCI:
+		val = inl(fc->addr);
+		outl(AVM_HDLC_1, fc->addr + CHIP_INDEX);
+		ver = inl(fc->addr + CHIP_WINDOW + HDLC_STATUS) >> 24;
+		if (debug & DEBUG_HW) {
+			pr_notice("%s: PCI stat %#x\n", fc->name, val);
+			pr_notice("%s: PCI Class %X Rev %d\n", fc->name,
+				val & 0xff, (val >> 8) & 0xff);
+			pr_notice("%s: HDLC version %x\n", fc->name, ver & 0xf);
+		}
+		ASSIGN_FUNC(V1, ISAC, fc->isac);
+		fc->isac.type = IPAC_TYPE_ISAC;
+		break;
+	case AVM_FRITZ_PCIV2:
+		val = inl(fc->addr);
+		ver = inl(fc->addr + AVM_HDLC_STATUS_1) >> 24;
+		if (debug & DEBUG_HW) {
+			pr_notice("%s: PCI V2 stat %#x\n", fc->name, val);
+			pr_notice("%s: PCI V2 Class %X Rev %d\n", fc->name,
+				val & 0xff, (val>>8) & 0xff);
+			pr_notice("%s: HDLC version %x\n", fc->name, ver & 0xf);
+		}
+		ASSIGN_FUNC(V2, ISAC, fc->isac);
+		fc->isac.type = IPAC_TYPE_ISACX;
+		break;
+	default:
+		release_region(fc->addr, 32);
+		pr_info("%s: AVM unknown type %d\n", fc->name, fc->type);
+		return -ENODEV;
+	}
+	pr_notice("%s: %s config irq:%d base:0x%X\n", fc->name,
+		(fc->type == AVM_FRITZ_PCI) ? "AVM Fritz!CARD PCI" :
+		"AVM Fritz!CARD PCIv2", fc->irq, fc->addr);
+	return 0;
+}
+
+static void
+release_card(struct fritzcard *card)
+{
+	u_long flags;
+
+	disable_hwirq(card);
+	spin_lock_irqsave(&card->lock, flags);
+	modehdlc(&card->bch[0], ISDN_P_NONE);
+	modehdlc(&card->bch[1], ISDN_P_NONE);
+	spin_unlock_irqrestore(&card->lock, flags);
+	card->isac.release(&card->isac);
+	free_irq(card->irq, card);
+	mISDN_freebchannel(&card->bch[1]);
+	mISDN_freebchannel(&card->bch[0]);
+	mISDN_unregister_device(&card->isac.dch.dev);
+	release_region(card->addr, 32);
+	pci_disable_device(card->pdev);
+	pci_set_drvdata(card->pdev, NULL);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	kfree(card);
+	AVM_cnt--;
+}
+
+static int __devinit
+setup_instance(struct fritzcard *card)
+{
+	int i, err;
+	u_long flags;
+
+	snprintf(card->name, MISDN_MAX_IDLEN - 1, "AVM.%d", AVM_cnt + 1);
+	write_lock_irqsave(&card_lock, flags);
+	list_add_tail(&card->list, &Cards);
+	write_unlock_irqrestore(&card_lock, flags);
+
+	_set_debug(card);
+	card->isac.name = card->name;
+	spin_lock_init(&card->lock);
+	card->isac.hwlock = &card->lock;
+	mISDNisac_init(&card->isac, card);
+
+	card->isac.dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+	    (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
+	card->isac.dch.dev.D.ctrl = avm_dctrl;
+	for (i = 0; i < 2; i++) {
+		card->bch[i].nr = i + 1;
+		set_channelmap(i + 1, card->isac.dch.dev.channelmap);
+		mISDN_initbchannel(&card->bch[i], MAX_DATA_MEM);
+		card->bch[i].hw = card;
+		card->bch[i].ch.send = avm_l2l1B;
+		card->bch[i].ch.ctrl = avm_bctrl;
+		card->bch[i].ch.nr = i + 1;
+		list_add(&card->bch[i].ch.list, &card->isac.dch.dev.bchannels);
+	}
+	err = setup_fritz(card);
+	if (err)
+		goto error;
+	err = mISDN_register_device(&card->isac.dch.dev, &card->pdev->dev,
+		card->name);
+	if (err)
+		goto error_reg;
+	err = init_card(card);
+	if (!err)  {
+		AVM_cnt++;
+		pr_notice("AVM %d cards installed DEBUG\n", AVM_cnt);
+		return 0;
+	}
+	mISDN_unregister_device(&card->isac.dch.dev);
+error_reg:
+	release_region(card->addr, 32);
+error:
+	card->isac.release(&card->isac);
+	mISDN_freebchannel(&card->bch[1]);
+	mISDN_freebchannel(&card->bch[0]);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	kfree(card);
+	return err;
+}
+
+static int __devinit
+fritzpci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int err = -ENOMEM;
+	struct fritzcard *card;
+
+	card = kzalloc(sizeof(struct fritzcard), GFP_KERNEL);
+	if (!card) {
+		pr_info("No kmem for fritzcard\n");
+		return err;
+	}
+	if (pdev->device == PCI_DEVICE_ID_AVM_A1_V2)
+		card->type = AVM_FRITZ_PCIV2;
+	else
+		card->type = AVM_FRITZ_PCI;
+	card->pdev = pdev;
+	err = pci_enable_device(pdev);
+	if (err) {
+		kfree(card);
+		return err;
+	}
+
+	pr_notice("mISDN: found adapter %s at %s\n",
+	       (char *) ent->driver_data, pci_name(pdev));
+
+	card->addr = pci_resource_start(pdev, 1);
+	card->irq = pdev->irq;
+	pci_set_drvdata(pdev, card);
+	err = setup_instance(card);
+	if (err)
+		pci_set_drvdata(pdev, NULL);
+	return err;
+}
+
+static void __devexit
+fritz_remove_pci(struct pci_dev *pdev)
+{
+	struct fritzcard *card = pci_get_drvdata(pdev);
+
+	if (card)
+		release_card(card);
+	else
+		if (debug)
+			pr_info("%s: drvdata allready removed\n", __func__);
+}
+
+static struct pci_device_id fcpci_ids[] __devinitdata = {
+	{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_A1, PCI_ANY_ID, PCI_ANY_ID,
+	  0, 0, (unsigned long) "Fritz!Card PCI"},
+	{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_A1_V2, PCI_ANY_ID, PCI_ANY_ID,
+	  0, 0, (unsigned long) "Fritz!Card PCI v2" },
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, fcpci_ids);
+
+static struct pci_driver fcpci_driver = {
+	.name = "fcpci",
+	.probe = fritzpci_probe,
+	.remove = __devexit_p(fritz_remove_pci),
+	.id_table = fcpci_ids,
+};
+
+static int __init AVM_init(void)
+{
+	int err;
+
+	pr_notice("AVM Fritz PCI driver Rev. %s\n", AVMFRITZ_REV);
+	err = pci_register_driver(&fcpci_driver);
+	return err;
+}
+
+static void __exit AVM_cleanup(void)
+{
+	pci_unregister_driver(&fcpci_driver);
+}
+
+module_init(AVM_init);
+module_exit(AVM_cleanup);

drivers/isdn/hardware/mISDN/hfcmulti.c

@@ -3416,22 +3416,8 @@ deactivate_bchannel(struct bchannel *bch)
 	u_long			flags;
 
 	spin_lock_irqsave(&hc->lock, flags);
-	if (test_and_clear_bit(FLG_TX_NEXT, &bch->Flags)) {
-		dev_kfree_skb(bch->next_skb);
-		bch->next_skb = NULL;
-	}
-	if (bch->tx_skb) {
-		dev_kfree_skb(bch->tx_skb);
-		bch->tx_skb = NULL;
-	}
-	bch->tx_idx = 0;
-	if (bch->rx_skb) {
-		dev_kfree_skb(bch->rx_skb);
-		bch->rx_skb = NULL;
-	}
+	mISDN_clear_bchannel(bch);
 	hc->chan[bch->slot].coeff_count = 0;
-	test_and_clear_bit(FLG_ACTIVE, &bch->Flags);
-	test_and_clear_bit(FLG_TX_BUSY, &bch->Flags);
 	hc->chan[bch->slot].rx_off = 0;
 	hc->chan[bch->slot].conf = -1;
 	mode_hfcmulti(hc, bch->slot, ISDN_P_NONE, -1, 0, -1, 0);
@@ -5384,9 +5370,10 @@ hfcmulti_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	    ent->device == PCI_DEVICE_ID_CCD_HFC8S ||
 	    ent->device == PCI_DEVICE_ID_CCD_HFCE1)) {
 		printk(KERN_ERR
-		    "Unknown HFC multiport controller (vendor:%x device:%x "
-		    "subvendor:%x subdevice:%x)\n", ent->vendor, ent->device,
-		    ent->subvendor, ent->subdevice);
+		    "Unknown HFC multiport controller (vendor:%04x device:%04x "
+		    "subvendor:%04x subdevice:%04x)\n", pdev->vendor,
+		    pdev->device, pdev->subsystem_vendor,
+		    pdev->subsystem_device);
 		printk(KERN_ERR
 		    "Please contact the driver maintainer for support.\n");
 		return -ENODEV;

drivers/isdn/hardware/mISDN/hfcpci.c

@@ -1522,22 +1522,8 @@ deactivate_bchannel(struct bchannel *bch)
 	u_long		flags;
 
 	spin_lock_irqsave(&hc->lock, flags);
-	if (test_and_clear_bit(FLG_TX_NEXT, &bch->Flags)) {
-		dev_kfree_skb(bch->next_skb);
-		bch->next_skb = NULL;
-	}
-	if (bch->tx_skb) {
-		dev_kfree_skb(bch->tx_skb);
-		bch->tx_skb = NULL;
-	}
-	bch->tx_idx = 0;
-	if (bch->rx_skb) {
-		dev_kfree_skb(bch->rx_skb);
-		bch->rx_skb = NULL;
-	}
+	mISDN_clear_bchannel(bch);
 	mode_hfcpci(bch, bch->nr, ISDN_P_NONE);
-	test_and_clear_bit(FLG_ACTIVE, &bch->Flags);
-	test_and_clear_bit(FLG_TX_BUSY, &bch->Flags);
 	spin_unlock_irqrestore(&hc->lock, flags);
 }
 

drivers/isdn/hardware/mISDN/hfcsusb.c

@@ -1809,21 +1809,7 @@ deactivate_bchannel(struct bchannel *bch)
 		    hw->name, __func__, bch->nr);
 
 	spin_lock_irqsave(&hw->lock, flags);
-	if (test_and_clear_bit(FLG_TX_NEXT, &bch->Flags)) {
-		dev_kfree_skb(bch->next_skb);
-		bch->next_skb = NULL;
-	}
-	if (bch->tx_skb) {
-		dev_kfree_skb(bch->tx_skb);
-		bch->tx_skb = NULL;
-	}
-	bch->tx_idx = 0;
-	if (bch->rx_skb) {
-		dev_kfree_skb(bch->rx_skb);
-		bch->rx_skb = NULL;
-	}
-	clear_bit(FLG_ACTIVE, &bch->Flags);
-	clear_bit(FLG_TX_BUSY, &bch->Flags);
+	mISDN_clear_bchannel(bch);
 	spin_unlock_irqrestore(&hw->lock, flags);
 	hfcsusb_setup_bch(bch, ISDN_P_NONE);
 	hfcsusb_stop_endpoint(hw, bch->nr);

drivers/isdn/hardware/mISDN/iohelper.h

@@ -0,0 +1,109 @@
+/*
+ * iohelper.h
+ *		helper for define functions to access ISDN hardware
+ *              supported are memory mapped IO
+ *		indirect port IO (one port for address, one for data)
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef _IOHELPER_H
+#define _IOHELPER_H
+
+typedef	u8	(read_reg_t)(void *, u8);
+typedef	void	(write_reg_t)(void *, u8, u8);
+typedef	void	(fifo_func_t)(void *, u8, u8 *, int);
+
+struct _ioport {
+	u32	port;
+	u32	ale;
+};
+
+#define IOFUNC_IO(name, hws, ap) \
+	static u8 Read##name##_IO(void *p, u8 off) {\
+		struct hws *hw = p;\
+		return inb(hw->ap.port + off);\
+	} \
+	static void Write##name##_IO(void *p, u8 off, u8 val) {\
+		struct hws *hw = p;\
+		outb(val, hw->ap.port + off);\
+	} \
+	static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) {\
+		struct hws *hw = p;\
+		insb(hw->ap.port + off, dp, size);\
+	} \
+	static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) {\
+		struct hws *hw = p;\
+		outsb(hw->ap.port + off, dp, size);\
+	}
+
+#define IOFUNC_IND(name, hws, ap) \
+	static u8 Read##name##_IND(void *p, u8 off) {\
+		struct hws *hw = p;\
+		outb(off, hw->ap.ale);\
+		return inb(hw->ap.port);\
+	} \
+	static void Write##name##_IND(void *p, u8 off, u8 val) {\
+		struct hws *hw = p;\
+		outb(off, hw->ap.ale);\
+		outb(val, hw->ap.port);\
+	} \
+	static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) {\
+		struct hws *hw = p;\
+		outb(off, hw->ap.ale);\
+		insb(hw->ap.port, dp, size);\
+	} \
+	static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) {\
+		struct hws *hw = p;\
+		outb(off, hw->ap.ale);\
+		outsb(hw->ap.port, dp, size);\
+	}
+
+#define IOFUNC_MEMIO(name, hws, typ, adr) \
+	static u8 Read##name##_MIO(void *p, u8 off) {\
+		struct hws *hw = p;\
+		return readb(((typ *)hw->adr) + off);\
+	} \
+	static void Write##name##_MIO(void *p, u8 off, u8 val) {\
+		struct hws *hw = p;\
+		writeb(val, ((typ *)hw->adr) + off);\
+	} \
+	static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) {\
+		struct hws *hw = p;\
+		while (size--)\
+			*dp++ = readb(((typ *)hw->adr) + off);\
+	} \
+	static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) {\
+		struct inf_hw *hw = p;\
+		while (size--)\
+			writeb(*dp++, ((typ *)hw->adr) + off);\
+	}
+
+#define ASSIGN_FUNC(typ, name, dest)	do {\
+	dest.read_reg = &Read##name##_##typ;\
+	dest.write_reg = &Write##name##_##typ;\
+	dest.read_fifo = &ReadFiFo##name##_##typ;\
+	dest.write_fifo = &WriteFiFo##name##_##typ;\
+	} while (0)
+#define ASSIGN_FUNC_IPAC(typ, target)	do {\
+	ASSIGN_FUNC(typ, ISAC, target.isac);\
+	ASSIGN_FUNC(typ, IPAC, target);\
+	} while (0)
+
+#endif

drivers/isdn/hardware/mISDN/ipac.h

@@ -0,0 +1,405 @@
+/*
+ *
+ * ipac.h	Defines for the Infineon (former Siemens) ISDN
+ *		chip series
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "iohelper.h"
+
+struct isac_hw {
+	struct dchannel		dch;
+	u32			type;
+	u32			off;		/* offset to isac regs */
+	char			*name;
+	spinlock_t		*hwlock;	/* lock HW acccess */
+	read_reg_t		*read_reg;
+	write_reg_t		*write_reg;
+	fifo_func_t		*read_fifo;
+	fifo_func_t		*write_fifo;
+	int			(*monitor)(void *, u32, u8 *, int);
+	void			(*release)(struct isac_hw *);
+	int			(*init)(struct isac_hw *);
+	int			(*ctrl)(struct isac_hw *, u32, u_long);
+	int			(*open)(struct isac_hw *, struct channel_req *);
+	u8			*mon_tx;
+	u8			*mon_rx;
+	int			mon_txp;
+	int			mon_txc;
+	int			mon_rxp;
+	struct arcofi_msg	*arcofi_list;
+	struct timer_list	arcofitimer;
+	wait_queue_head_t	arcofi_wait;
+	u8			arcofi_bc;
+	u8			arcofi_state;
+	u8			mocr;
+	u8			adf2;
+	u8			state;
+};
+
+struct ipac_hw;
+
+struct hscx_hw {
+	struct bchannel		bch;
+	struct ipac_hw		*ip;
+	u8			fifo_size;
+	u8			off;	/* offset to ICA or ICB */
+	u8			slot;
+	char			log[64];
+};
+
+struct ipac_hw {
+	struct isac_hw		isac;
+	struct hscx_hw		hscx[2];
+	char			*name;
+	void			*hw;
+	spinlock_t		*hwlock;	/* lock HW acccess */
+	struct module		*owner;
+	u32			type;
+	read_reg_t		*read_reg;
+	write_reg_t		*write_reg;
+	fifo_func_t		*read_fifo;
+	fifo_func_t		*write_fifo;
+	void			(*release)(struct ipac_hw *);
+	int			(*init)(struct ipac_hw *);
+	int			(*ctrl)(struct ipac_hw *, u32, u_long);
+	u8			conf;
+};
+
+#define IPAC_TYPE_ISAC		0x0010
+#define IPAC_TYPE_IPAC		0x0020
+#define IPAC_TYPE_ISACX		0x0040
+#define IPAC_TYPE_IPACX		0x0080
+#define IPAC_TYPE_HSCX		0x0100
+
+#define ISAC_USE_ARCOFI		0x1000
+
+/* Monitor functions */
+#define MONITOR_RX_0		0x1000
+#define MONITOR_RX_1		0x1001
+#define MONITOR_TX_0		0x2000
+#define MONITOR_TX_1		0x2001
+
+/* All registers original Siemens Spec  */
+/* IPAC/ISAC registers */
+#define ISAC_MASK		0x20
+#define ISAC_ISTA		0x20
+#define ISAC_STAR		0x21
+#define ISAC_CMDR		0x21
+#define ISAC_EXIR		0x24
+#define ISAC_ADF2		0x39
+#define ISAC_SPCR		0x30
+#define ISAC_ADF1		0x38
+#define ISAC_CIR0		0x31
+#define ISAC_CIX0		0x31
+#define ISAC_CIR1		0x33
+#define ISAC_CIX1		0x33
+#define ISAC_STCR		0x37
+#define ISAC_MODE		0x22
+#define ISAC_RSTA		0x27
+#define ISAC_RBCL		0x25
+#define ISAC_RBCH		0x2A
+#define ISAC_TIMR		0x23
+#define ISAC_SQXR		0x3b
+#define ISAC_SQRR		0x3b
+#define ISAC_MOSR		0x3a
+#define ISAC_MOCR		0x3a
+#define ISAC_MOR0		0x32
+#define ISAC_MOX0		0x32
+#define ISAC_MOR1		0x34
+#define ISAC_MOX1		0x34
+
+#define ISAC_RBCH_XAC		0x80
+
+#define IPAC_D_TIN2		0x01
+
+/* IPAC/HSCX */
+#define IPAC_ISTAB		0x20	/* RD	*/
+#define IPAC_MASKB		0x20	/* WR	*/
+#define IPAC_STARB		0x21	/* RD	*/
+#define IPAC_CMDRB		0x21	/* WR	*/
+#define IPAC_MODEB		0x22	/* R/W	*/
+#define IPAC_EXIRB		0x24	/* RD	*/
+#define IPAC_RBCLB		0x25	/* RD	*/
+#define IPAC_RAH1		0x26	/* WR	*/
+#define IPAC_RAH2		0x27	/* WR	*/
+#define IPAC_RSTAB		0x27	/* RD	*/
+#define IPAC_RAL1		0x28	/* R/W	*/
+#define IPAC_RAL2		0x29	/* WR	*/
+#define IPAC_RHCRB		0x29	/* RD	*/
+#define IPAC_XBCL		0x2A	/* WR	*/
+#define IPAC_CCR2		0x2C	/* R/W	*/
+#define IPAC_RBCHB		0x2D	/* RD	*/
+#define IPAC_XBCH		0x2D	/* WR	*/
+#define HSCX_VSTR		0x2E	/* RD	*/
+#define IPAC_RLCR		0x2E	/* WR	*/
+#define IPAC_CCR1		0x2F	/* R/W	*/
+#define IPAC_TSAX		0x30	/* WR	*/
+#define IPAC_TSAR		0x31	/* WR	*/
+#define IPAC_XCCR		0x32	/* WR	*/
+#define IPAC_RCCR		0x33	/* WR	*/
+
+/* IPAC_ISTAB/IPAC_MASKB bits */
+#define IPAC_B_XPR		0x10
+#define IPAC_B_RPF		0x40
+#define IPAC_B_RME		0x80
+#define IPAC_B_ON		0x2F
+
+/* IPAC_EXIRB bits */
+#define IPAC_B_RFS		0x04
+#define IPAC_B_RFO		0x10
+#define IPAC_B_XDU		0x40
+#define IPAC_B_XMR		0x80
+
+/* IPAC special registers */
+#define IPAC_CONF		0xC0	/* R/W	*/
+#define IPAC_ISTA		0xC1	/* RD	*/
+#define IPAC_MASK		0xC1	/* WR	*/
+#define IPAC_ID			0xC2	/* RD	*/
+#define IPAC_ACFG		0xC3	/* R/W	*/
+#define IPAC_AOE		0xC4	/* R/W	*/
+#define IPAC_ARX		0xC5	/* RD	*/
+#define IPAC_ATX		0xC5	/* WR	*/
+#define IPAC_PITA1		0xC6	/* R/W	*/
+#define IPAC_PITA2		0xC7	/* R/W	*/
+#define IPAC_POTA1		0xC8	/* R/W	*/
+#define IPAC_POTA2		0xC9	/* R/W	*/
+#define IPAC_PCFG		0xCA	/* R/W	*/
+#define IPAC_SCFG		0xCB	/* R/W	*/
+#define IPAC_TIMR2		0xCC	/* R/W	*/
+
+/* IPAC_ISTA/_MASK bits */
+#define IPAC__EXB		0x01
+#define IPAC__ICB		0x02
+#define IPAC__EXA		0x04
+#define IPAC__ICA		0x08
+#define IPAC__EXD		0x10
+#define IPAC__ICD		0x20
+#define IPAC__INT0		0x40
+#define IPAC__INT1		0x80
+#define IPAC__ON		0xC0
+
+/* HSCX ISTA/MASK bits */
+#define HSCX__EXB		0x01
+#define HSCX__EXA		0x02
+#define HSCX__ICA		0x04
+
+/* ISAC/ISACX/IPAC/IPACX L1 commands */
+#define ISAC_CMD_TIM		0x0
+#define ISAC_CMD_RS		0x1
+#define ISAC_CMD_SCZ		0x4
+#define ISAC_CMD_SSZ		0x2
+#define ISAC_CMD_AR8		0x8
+#define ISAC_CMD_AR10		0x9
+#define ISAC_CMD_ARL		0xA
+#define ISAC_CMD_DUI		0xF
+
+/* ISAC/ISACX/IPAC/IPACX L1 indications */
+#define ISAC_IND_RS		0x1
+#define ISAC_IND_PU		0x7
+#define ISAC_IND_DR		0x0
+#define ISAC_IND_SD		0x2
+#define ISAC_IND_DIS		0x3
+#define ISAC_IND_EI		0x6
+#define ISAC_IND_RSY		0x4
+#define ISAC_IND_ARD		0x8
+#define ISAC_IND_TI		0xA
+#define ISAC_IND_ATI		0xB
+#define ISAC_IND_AI8		0xC
+#define ISAC_IND_AI10		0xD
+#define ISAC_IND_DID		0xF
+
+/* the new ISACX / IPACX */
+/* D-channel registers   */
+#define ISACX_RFIFOD		0x00	/* RD	*/
+#define ISACX_XFIFOD		0x00	/* WR	*/
+#define ISACX_ISTAD		0x20	/* RD	*/
+#define ISACX_MASKD		0x20	/* WR	*/
+#define ISACX_STARD		0x21	/* RD	*/
+#define ISACX_CMDRD		0x21	/* WR	*/
+#define ISACX_MODED		0x22	/* R/W	*/
+#define ISACX_EXMD1		0x23	/* R/W	*/
+#define ISACX_TIMR1		0x24	/* R/W	*/
+#define ISACX_SAP1		0x25	/* WR	*/
+#define ISACX_SAP2		0x26	/* WR	*/
+#define ISACX_RBCLD		0x26	/* RD	*/
+#define ISACX_RBCHD		0x27	/* RD	*/
+#define ISACX_TEI1		0x27	/* WR	*/
+#define ISACX_TEI2		0x28	/* WR	*/
+#define ISACX_RSTAD		0x28	/* RD	*/
+#define ISACX_TMD		0x29	/* R/W	*/
+#define ISACX_CIR0		0x2E	/* RD	*/
+#define ISACX_CIX0		0x2E	/* WR	*/
+#define ISACX_CIR1		0x2F	/* RD	*/
+#define ISACX_CIX1		0x2F	/* WR	*/
+
+/* Transceiver registers  */
+#define ISACX_TR_CONF0		0x30	/* R/W	*/
+#define ISACX_TR_CONF1		0x31	/* R/W	*/
+#define ISACX_TR_CONF2		0x32	/* R/W	*/
+#define ISACX_TR_STA		0x33	/* RD	*/
+#define ISACX_TR_CMD		0x34	/* R/W	*/
+#define ISACX_SQRR1		0x35	/* RD	*/
+#define ISACX_SQXR1		0x35	/* WR	*/
+#define ISACX_SQRR2		0x36	/* RD	*/
+#define ISACX_SQXR2		0x36	/* WR	*/
+#define ISACX_SQRR3		0x37	/* RD	*/
+#define ISACX_SQXR3		0x37	/* WR	*/
+#define ISACX_ISTATR		0x38	/* RD	*/
+#define ISACX_MASKTR		0x39	/* R/W	*/
+#define ISACX_TR_MODE		0x3A	/* R/W	*/
+#define ISACX_ACFG1		0x3C	/* R/W	*/
+#define ISACX_ACFG2		0x3D	/* R/W	*/
+#define ISACX_AOE		0x3E	/* R/W	*/
+#define ISACX_ARX		0x3F	/* RD	*/
+#define ISACX_ATX		0x3F	/* WR	*/
+
+/* IOM: Timeslot, DPS, CDA  */
+#define ISACX_CDA10		0x40	/* R/W	*/
+#define ISACX_CDA11		0x41	/* R/W	*/
+#define ISACX_CDA20		0x42	/* R/W	*/
+#define ISACX_CDA21		0x43	/* R/W	*/
+#define ISACX_CDA_TSDP10	0x44	/* R/W	*/
+#define ISACX_CDA_TSDP11	0x45	/* R/W	*/
+#define ISACX_CDA_TSDP20	0x46	/* R/W	*/
+#define ISACX_CDA_TSDP21	0x47	/* R/W	*/
+#define ISACX_BCHA_TSDP_BC1	0x48	/* R/W	*/
+#define ISACX_BCHA_TSDP_BC2	0x49	/* R/W	*/
+#define ISACX_BCHB_TSDP_BC1	0x4A	/* R/W	*/
+#define ISACX_BCHB_TSDP_BC2	0x4B	/* R/W	*/
+#define ISACX_TR_TSDP_BC1	0x4C	/* R/W	*/
+#define ISACX_TR_TSDP_BC2	0x4D	/* R/W	*/
+#define ISACX_CDA1_CR		0x4E	/* R/W	*/
+#define ISACX_CDA2_CR		0x4F	/* R/W	*/
+
+/* IOM: Contol, Sync transfer, Monitor    */
+#define ISACX_TR_CR		0x50	/* R/W	*/
+#define ISACX_TRC_CR		0x50	/* R/W	*/
+#define ISACX_BCHA_CR		0x51	/* R/W	*/
+#define ISACX_BCHB_CR		0x52	/* R/W	*/
+#define ISACX_DCI_CR		0x53	/* R/W	*/
+#define ISACX_DCIC_CR		0x53	/* R/W	*/
+#define ISACX_MON_CR		0x54	/* R/W	*/
+#define ISACX_SDS1_CR		0x55	/* R/W	*/
+#define ISACX_SDS2_CR		0x56	/* R/W	*/
+#define ISACX_IOM_CR		0x57	/* R/W	*/
+#define ISACX_STI		0x58	/* RD	*/
+#define ISACX_ASTI		0x58	/* WR	*/
+#define ISACX_MSTI		0x59	/* R/W	*/
+#define ISACX_SDS_CONF		0x5A	/* R/W	*/
+#define ISACX_MCDA		0x5B	/* RD	*/
+#define ISACX_MOR		0x5C	/* RD	*/
+#define ISACX_MOX		0x5C	/* WR	*/
+#define ISACX_MOSR		0x5D	/* RD	*/
+#define ISACX_MOCR		0x5E	/* R/W	*/
+#define ISACX_MSTA		0x5F	/* RD	*/
+#define ISACX_MCONF		0x5F	/* WR	*/
+
+/* Interrupt and general registers */
+#define ISACX_ISTA		0x60	/* RD	*/
+#define ISACX_MASK		0x60	/* WR	*/
+#define ISACX_AUXI		0x61	/* RD	*/
+#define ISACX_AUXM		0x61	/* WR	*/
+#define ISACX_MODE1		0x62	/* R/W	*/
+#define ISACX_MODE2		0x63	/* R/W	*/
+#define ISACX_ID		0x64	/* RD	*/
+#define ISACX_SRES		0x64	/* WR	*/
+#define ISACX_TIMR2		0x65	/* R/W	*/
+
+/* Register Bits */
+/* ISACX/IPACX _ISTAD (R) and _MASKD (W) */
+#define ISACX_D_XDU		0x04
+#define ISACX_D_XMR		0x08
+#define ISACX_D_XPR		0x10
+#define ISACX_D_RFO		0x20
+#define ISACX_D_RPF		0x40
+#define ISACX_D_RME		0x80
+
+/* ISACX/IPACX _ISTA (R) and _MASK (W) */
+#define ISACX__ICD		0x01
+#define ISACX__MOS		0x02
+#define ISACX__TRAN		0x04
+#define ISACX__AUX		0x08
+#define ISACX__CIC		0x10
+#define ISACX__ST		0x20
+#define IPACX__ICB		0x40
+#define IPACX__ICA		0x80
+#define IPACX__ON		0x2C
+
+/* ISACX/IPACX _CMDRD (W) */
+#define ISACX_CMDRD_XRES	0x01
+#define ISACX_CMDRD_XME		0x02
+#define ISACX_CMDRD_XTF		0x08
+#define ISACX_CMDRD_STI		0x10
+#define ISACX_CMDRD_RRES	0x40
+#define ISACX_CMDRD_RMC		0x80
+
+/* ISACX/IPACX _RSTAD (R) */
+#define ISACX_RSTAD_TA		0x01
+#define ISACX_RSTAD_CR		0x02
+#define ISACX_RSTAD_SA0		0x04
+#define ISACX_RSTAD_SA1		0x08
+#define ISACX_RSTAD_RAB		0x10
+#define ISACX_RSTAD_CRC		0x20
+#define ISACX_RSTAD_RDO		0x40
+#define ISACX_RSTAD_VFR		0x80
+
+/* ISACX/IPACX _CIR0 (R) */
+#define ISACX_CIR0_BAS		0x01
+#define ISACX_CIR0_SG		0x08
+#define ISACX_CIR0_CIC1		0x08
+#define ISACX_CIR0_CIC0		0x08
+
+/* B-channel registers */
+#define IPACX_OFF_ICA		0x70
+#define IPACX_OFF_ICB		0x80
+
+/* ICA: IPACX_OFF_ICA + Reg ICB: IPACX_OFF_ICB + Reg */
+
+#define IPACX_ISTAB		0x00    /* RD	*/
+#define IPACX_MASKB		0x00	/* WR	*/
+#define IPACX_STARB		0x01	/* RD	*/
+#define IPACX_CMDRB		0x01	/* WR	*/
+#define IPACX_MODEB		0x02	/* R/W	*/
+#define IPACX_EXMB		0x03	/* R/W	*/
+#define IPACX_RAH1		0x05	/* WR	*/
+#define IPACX_RAH2		0x06	/* WR	*/
+#define IPACX_RBCLB		0x06	/* RD	*/
+#define IPACX_RBCHB		0x07	/* RD	*/
+#define IPACX_RAL1		0x07	/* WR	*/
+#define IPACX_RAL2		0x08	/* WR	*/
+#define IPACX_RSTAB		0x08	/* RD	*/
+#define IPACX_TMB		0x09	/* R/W	*/
+#define IPACX_RFIFOB		0x0A	/* RD	*/
+#define IPACX_XFIFOB		0x0A	/* WR	*/
+
+/* IPACX_ISTAB / IPACX_MASKB bits */
+#define IPACX_B_XDU		0x04
+#define IPACX_B_XPR		0x10
+#define IPACX_B_RFO		0x20
+#define IPACX_B_RPF		0x40
+#define IPACX_B_RME		0x80
+
+#define IPACX_B_ON		0x0B
+
+extern int mISDNisac_init(struct isac_hw *, void *);
+extern irqreturn_t mISDNisac_irq(struct isac_hw *, u8);
+extern u32 mISDNipac_init(struct ipac_hw *, void *);
+extern irqreturn_t mISDNipac_irq(struct ipac_hw *, int);

drivers/isdn/hardware/mISDN/isar.h

@@ -0,0 +1,269 @@
+/*
+ *
+ * isar.h   ISAR (Siemens PSB 7110) specific defines
+ *
+ * Author Karsten Keil (keil@isdn4linux.de)
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "iohelper.h"
+
+struct isar_hw;
+
+struct isar_ch {
+	struct bchannel		bch;
+	struct isar_hw		*is;
+	struct timer_list	ftimer;
+	u8			nr;
+	u8			dpath;
+	u8			mml;
+	u8			state;
+	u8			cmd;
+	u8			mod;
+	u8			newcmd;
+	u8			newmod;
+	u8			try_mod;
+	u8			conmsg[16];
+};
+
+struct isar_hw {
+	struct	isar_ch	ch[2];
+	void		*hw;
+	spinlock_t	*hwlock;	/* lock HW acccess */
+	char		*name;
+	struct module	*owner;
+	read_reg_t	*read_reg;
+	write_reg_t	*write_reg;
+	fifo_func_t	*read_fifo;
+	fifo_func_t	*write_fifo;
+	int		(*ctrl)(void *, u32, u_long);
+	void		(*release)(struct isar_hw *);
+	int		(*init)(struct isar_hw *);
+	int		(*open)(struct isar_hw *, struct channel_req *);
+	int		(*firmware)(struct isar_hw *, const u8 *, int);
+	unsigned long	Flags;
+	int		version;
+	u8		bstat;
+	u8		iis;
+	u8		cmsb;
+	u8		clsb;
+	u8		buf[256];
+	u8		log[256];
+};
+
+#define ISAR_IRQMSK	0x04
+#define ISAR_IRQSTA	0x04
+#define ISAR_IRQBIT	0x75
+#define ISAR_CTRL_H	0x61
+#define ISAR_CTRL_L	0x60
+#define ISAR_IIS	0x58
+#define ISAR_IIA	0x58
+#define ISAR_HIS	0x50
+#define ISAR_HIA	0x50
+#define ISAR_MBOX	0x4c
+#define ISAR_WADR	0x4a
+#define ISAR_RADR	0x48
+
+#define ISAR_HIS_VNR		0x14
+#define ISAR_HIS_DKEY		0x02
+#define ISAR_HIS_FIRM		0x1e
+#define ISAR_HIS_STDSP		0x08
+#define ISAR_HIS_DIAG		0x05
+#define ISAR_HIS_P0CFG		0x3c
+#define ISAR_HIS_P12CFG		0x24
+#define ISAR_HIS_SARTCFG	0x25
+#define ISAR_HIS_PUMPCFG	0x26
+#define ISAR_HIS_PUMPCTRL	0x2a
+#define ISAR_HIS_IOM2CFG	0x27
+#define ISAR_HIS_IOM2REQ	0x07
+#define ISAR_HIS_IOM2CTRL	0x2b
+#define ISAR_HIS_BSTREQ		0x0c
+#define ISAR_HIS_PSTREQ		0x0e
+#define ISAR_HIS_SDATA		0x20
+#define ISAR_HIS_DPS1		0x40
+#define ISAR_HIS_DPS2		0x80
+#define SET_DPS(x)		((x<<6) & 0xc0)
+
+#define ISAR_IIS_MSCMSD		0x3f
+#define ISAR_IIS_VNR		0x15
+#define ISAR_IIS_DKEY		0x03
+#define ISAR_IIS_FIRM		0x1f
+#define ISAR_IIS_STDSP		0x09
+#define ISAR_IIS_DIAG		0x25
+#define ISAR_IIS_GSTEV		0x00
+#define ISAR_IIS_BSTEV		0x28
+#define ISAR_IIS_BSTRSP		0x2c
+#define ISAR_IIS_PSTRSP		0x2e
+#define ISAR_IIS_PSTEV		0x2a
+#define ISAR_IIS_IOM2RSP	0x27
+#define ISAR_IIS_RDATA		0x20
+#define ISAR_IIS_INVMSG		0x3f
+
+#define ISAR_CTRL_SWVER	0x10
+#define ISAR_CTRL_STST	0x40
+
+#define ISAR_MSG_HWVER	0x20
+
+#define ISAR_DP1_USE	1
+#define ISAR_DP2_USE	2
+#define ISAR_RATE_REQ	3
+
+#define PMOD_DISABLE	0
+#define PMOD_FAX	1
+#define PMOD_DATAMODEM	2
+#define PMOD_HALFDUPLEX	3
+#define PMOD_V110	4
+#define PMOD_DTMF	5
+#define PMOD_DTMF_TRANS	6
+#define PMOD_BYPASS	7
+
+#define PCTRL_ORIG	0x80
+#define PV32P2_V23R	0x40
+#define PV32P2_V22A	0x20
+#define PV32P2_V22B	0x10
+#define PV32P2_V22C	0x08
+#define PV32P2_V21	0x02
+#define PV32P2_BEL	0x01
+
+/* LSB MSB in ISAR doc wrong !!! Arghhh */
+#define PV32P3_AMOD	0x80
+#define PV32P3_V32B	0x02
+#define PV32P3_V23B	0x01
+#define PV32P4_48	0x11
+#define PV32P5_48	0x05
+#define PV32P4_UT48	0x11
+#define PV32P5_UT48	0x0d
+#define PV32P4_96	0x11
+#define PV32P5_96	0x03
+#define PV32P4_UT96	0x11
+#define PV32P5_UT96	0x0f
+#define PV32P4_B96	0x91
+#define PV32P5_B96	0x0b
+#define PV32P4_UTB96	0xd1
+#define PV32P5_UTB96	0x0f
+#define PV32P4_120	0xb1
+#define PV32P5_120	0x09
+#define PV32P4_UT120	0xf1
+#define PV32P5_UT120	0x0f
+#define PV32P4_144	0x99
+#define PV32P5_144	0x09
+#define PV32P4_UT144	0xf9
+#define PV32P5_UT144	0x0f
+#define PV32P6_CTN	0x01
+#define PV32P6_ATN	0x02
+
+#define PFAXP2_CTN	0x01
+#define PFAXP2_ATN	0x04
+
+#define PSEV_10MS_TIMER	0x02
+#define PSEV_CON_ON	0x18
+#define PSEV_CON_OFF	0x19
+#define PSEV_V24_OFF	0x20
+#define PSEV_CTS_ON	0x21
+#define PSEV_CTS_OFF	0x22
+#define PSEV_DCD_ON	0x23
+#define PSEV_DCD_OFF	0x24
+#define PSEV_DSR_ON	0x25
+#define PSEV_DSR_OFF	0x26
+#define PSEV_REM_RET	0xcc
+#define PSEV_REM_REN	0xcd
+#define PSEV_GSTN_CLR	0xd4
+
+#define PSEV_RSP_READY	0xbc
+#define PSEV_LINE_TX_H	0xb3
+#define PSEV_LINE_TX_B	0xb2
+#define PSEV_LINE_RX_H	0xb1
+#define PSEV_LINE_RX_B	0xb0
+#define PSEV_RSP_CONN	0xb5
+#define PSEV_RSP_DISC	0xb7
+#define PSEV_RSP_FCERR	0xb9
+#define PSEV_RSP_SILDET	0xbe
+#define PSEV_RSP_SILOFF	0xab
+#define PSEV_FLAGS_DET	0xba
+
+#define PCTRL_CMD_TDTMF	0x5a
+
+#define PCTRL_CMD_FTH	0xa7
+#define PCTRL_CMD_FRH	0xa5
+#define PCTRL_CMD_FTM	0xa8
+#define PCTRL_CMD_FRM	0xa6
+#define PCTRL_CMD_SILON	0xac
+#define PCTRL_CMD_CONT	0xa2
+#define PCTRL_CMD_ESC	0xa4
+#define PCTRL_CMD_SILOFF 0xab
+#define PCTRL_CMD_HALT	0xa9
+
+#define PCTRL_LOC_RET	0xcf
+#define PCTRL_LOC_REN	0xce
+
+#define SMODE_DISABLE	0
+#define SMODE_V14	2
+#define SMODE_HDLC	3
+#define SMODE_BINARY	4
+#define SMODE_FSK_V14	5
+
+#define SCTRL_HDMC_BOTH	0x00
+#define SCTRL_HDMC_DTX	0x80
+#define SCTRL_HDMC_DRX	0x40
+#define S_P1_OVSP	0x40
+#define S_P1_SNP	0x20
+#define S_P1_EOP	0x10
+#define S_P1_EDP	0x08
+#define S_P1_NSB	0x04
+#define S_P1_CHS_8	0x03
+#define S_P1_CHS_7	0x02
+#define S_P1_CHS_6	0x01
+#define S_P1_CHS_5	0x00
+
+#define S_P2_BFT_DEF	0x10
+
+#define IOM_CTRL_ENA	0x80
+#define IOM_CTRL_NOPCM	0x00
+#define IOM_CTRL_ALAW	0x02
+#define IOM_CTRL_ULAW	0x04
+#define IOM_CTRL_RCV	0x01
+
+#define IOM_P1_TXD	0x10
+
+#define HDLC_FED	0x40
+#define HDLC_FSD	0x20
+#define HDLC_FST	0x20
+#define HDLC_ERROR	0x1c
+#define HDLC_ERR_FAD	0x10
+#define HDLC_ERR_RER	0x08
+#define HDLC_ERR_CER	0x04
+#define SART_NMD	0x01
+
+#define BSTAT_RDM0	0x1
+#define BSTAT_RDM1	0x2
+#define BSTAT_RDM2	0x4
+#define BSTAT_RDM3	0x8
+#define BSTEV_TBO	0x1f
+#define BSTEV_RBO	0x2f
+
+/* FAX State Machine */
+#define STFAX_NULL	0
+#define STFAX_READY	1
+#define STFAX_LINE	2
+#define STFAX_CONT	3
+#define STFAX_ACTIV	4
+#define STFAX_ESCAPE	5
+#define STFAX_SILDET	6
+
+extern u32 mISDNisar_init(struct isar_hw *, void *);
+extern void mISDNisar_irq(struct isar_hw *);

drivers/isdn/hardware/mISDN/mISDNinfineon.c

@@ -0,0 +1,1178 @@
+/*
+ * mISDNinfineon.c
+ *		Support for cards based on following Infineon ISDN chipsets
+ *		- ISAC + HSCX
+ *		- IPAC and IPAC-X
+ *		- ISAC-SX + HSCX
+ *
+ * Supported cards:
+ *		- Dialogic Diva 2.0
+ *		- Dialogic Diva 2.0U
+ *		- Dialogic Diva 2.01
+ *		- Dialogic Diva 2.02
+ *		- Sedlbauer Speedwin
+ *		- HST Saphir3
+ *		- Develo (former ELSA) Microlink PCI (Quickstep 1000)
+ *		- Develo (former ELSA) Quickstep 3000
+ *		- Berkom Scitel BRIX Quadro
+ *		- Dr.Neuhaus (Sagem) Niccy
+ *
+ *
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include "ipac.h"
+
+#define INFINEON_REV	"1.0"
+
+static int inf_cnt;
+static u32 debug;
+static u32 irqloops = 4;
+
+enum inf_types {
+	INF_NONE,
+	INF_DIVA20,
+	INF_DIVA20U,
+	INF_DIVA201,
+	INF_DIVA202,
+	INF_SPEEDWIN,
+	INF_SAPHIR3,
+	INF_QS1000,
+	INF_QS3000,
+	INF_NICCY,
+	INF_SCT_1,
+	INF_SCT_2,
+	INF_SCT_3,
+	INF_SCT_4,
+	INF_GAZEL_R685,
+	INF_GAZEL_R753
+};
+
+enum addr_mode {
+	AM_NONE = 0,
+	AM_IO,
+	AM_MEMIO,
+	AM_IND_IO,
+};
+
+struct inf_cinfo {
+	enum inf_types	typ;
+	const char	*full;
+	const char	*name;
+	enum addr_mode	cfg_mode;
+	enum addr_mode	addr_mode;
+	u8		cfg_bar;
+	u8		addr_bar;
+	void		*irqfunc;
+};
+
+struct _ioaddr {
+	enum addr_mode	mode;
+	union {
+		void __iomem	*p;
+		struct _ioport	io;
+	} a;
+};
+
+struct _iohandle {
+	enum addr_mode	mode;
+	resource_size_t	size;
+	resource_size_t	start;
+	void __iomem	*p;
+};
+
+struct inf_hw {
+	struct list_head	list;
+	struct pci_dev		*pdev;
+	const struct inf_cinfo	*ci;
+	char			name[MISDN_MAX_IDLEN];
+	u32			irq;
+	u32			irqcnt;
+	struct _iohandle	cfg;
+	struct _iohandle	addr;
+	struct _ioaddr		isac;
+	struct _ioaddr		hscx;
+	spinlock_t		lock;	/* HW access lock */
+	struct ipac_hw		ipac;
+	struct inf_hw		*sc[3];	/* slave cards */
+};
+
+
+#define PCI_SUBVENDOR_HST_SAPHIR3       0x52
+#define PCI_SUBVENDOR_SEDLBAUER_PCI     0x53
+#define PCI_SUB_ID_SEDLBAUER            0x01
+
+static struct pci_device_id infineon_ids[] __devinitdata = {
+	{ PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_DIVA20,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_DIVA20},
+	{ PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_DIVA20_U,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_DIVA20U},
+	{ PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_DIVA201,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_DIVA201},
+	{ PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_DIVA202,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_DIVA202},
+	{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
+	  PCI_SUBVENDOR_SEDLBAUER_PCI, PCI_SUB_ID_SEDLBAUER, 0, 0,
+	  INF_SPEEDWIN},
+	{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
+	  PCI_SUBVENDOR_HST_SAPHIR3, PCI_SUB_ID_SEDLBAUER, 0, 0, INF_SAPHIR3},
+	{ PCI_VENDOR_ID_ELSA, PCI_DEVICE_ID_ELSA_MICROLINK,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_QS1000},
+	{ PCI_VENDOR_ID_ELSA, PCI_DEVICE_ID_ELSA_QS3000,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_QS3000},
+	{ PCI_VENDOR_ID_SATSAGEM, PCI_DEVICE_ID_SATSAGEM_NICCY,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_NICCY},
+	{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+	  PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_SCITEL_QUADRO, 0, 0,
+	  INF_SCT_1},
+	{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_R685,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_GAZEL_R685},
+	{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_R753,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_GAZEL_R753},
+	{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_DJINN_ITOO,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_GAZEL_R753},
+	{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_OLITEC,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, INF_GAZEL_R753},
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, infineon_ids);
+
+/* PCI interface specific defines */
+/* Diva 2.0/2.0U */
+#define DIVA_HSCX_PORT		0x00
+#define DIVA_HSCX_ALE		0x04
+#define DIVA_ISAC_PORT		0x08
+#define DIVA_ISAC_ALE		0x0C
+#define DIVA_PCI_CTRL           0x10
+
+/* DIVA_PCI_CTRL bits */
+#define DIVA_IRQ_BIT		0x01
+#define DIVA_RESET_BIT		0x08
+#define DIVA_EEPROM_CLK		0x40
+#define DIVA_LED_A		0x10
+#define DIVA_LED_B		0x20
+#define DIVA_IRQ_CLR		0x80
+
+/* Diva 2.01/2.02 */
+/* Siemens PITA */
+#define PITA_ICR_REG		0x00
+#define PITA_INT0_STATUS	0x02
+
+#define PITA_MISC_REG		0x1c
+#define PITA_PARA_SOFTRESET	0x01000000
+#define PITA_SER_SOFTRESET	0x02000000
+#define PITA_PARA_MPX_MODE	0x04000000
+#define PITA_INT0_ENABLE	0x00020000
+
+/* TIGER 100 Registers */
+#define TIGER_RESET_ADDR	0x00
+#define TIGER_EXTERN_RESET	0x01
+#define TIGER_AUX_CTRL		0x02
+#define TIGER_AUX_DATA		0x03
+#define TIGER_AUX_IRQMASK	0x05
+#define TIGER_AUX_STATUS	0x07
+
+/* Tiger AUX BITs */
+#define TIGER_IOMASK		0xdd	/* 1 and 5 are inputs */
+#define TIGER_IRQ_BIT		0x02
+
+#define TIGER_IPAC_ALE		0xC0
+#define TIGER_IPAC_PORT		0xC8
+
+/* ELSA (now Develo) PCI cards */
+#define ELSA_IRQ_ADDR		0x4c
+#define ELSA_IRQ_MASK		0x04
+#define QS1000_IRQ_OFF		0x01
+#define QS3000_IRQ_OFF		0x03
+#define QS1000_IRQ_ON		0x41
+#define QS3000_IRQ_ON		0x43
+
+/* Dr Neuhaus/Sagem Niccy */
+#define NICCY_ISAC_PORT		0x00
+#define NICCY_HSCX_PORT		0x01
+#define NICCY_ISAC_ALE		0x02
+#define NICCY_HSCX_ALE		0x03
+
+#define NICCY_IRQ_CTRL_REG	0x38
+#define NICCY_IRQ_ENABLE	0x001f00
+#define NICCY_IRQ_DISABLE	0xff0000
+#define NICCY_IRQ_BIT		0x800000
+
+
+/* Scitel PLX */
+#define SCT_PLX_IRQ_ADDR	0x4c
+#define SCT_PLX_RESET_ADDR	0x50
+#define SCT_PLX_IRQ_ENABLE	0x41
+#define SCT_PLX_RESET_BIT	0x04
+
+/* Gazel */
+#define	GAZEL_IPAC_DATA_PORT	0x04
+/* Gazel PLX */
+#define GAZEL_CNTRL		0x50
+#define GAZEL_RESET		0x04
+#define GAZEL_RESET_9050	0x40000000
+#define GAZEL_INCSR		0x4C
+#define GAZEL_ISAC_EN		0x08
+#define GAZEL_INT_ISAC		0x20
+#define GAZEL_HSCX_EN		0x01
+#define GAZEL_INT_HSCX		0x04
+#define GAZEL_PCI_EN		0x40
+#define GAZEL_IPAC_EN		0x03
+
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+
+static void
+_set_debug(struct inf_hw *card)
+{
+	card->ipac.isac.dch.debug = debug;
+	card->ipac.hscx[0].bch.debug = debug;
+	card->ipac.hscx[1].bch.debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+	int ret;
+	struct inf_hw *card;
+
+	ret = param_set_uint(val, kp);
+	if (!ret) {
+		read_lock(&card_lock);
+		list_for_each_entry(card, &Cards, list)
+			_set_debug(card);
+		read_unlock(&card_lock);
+	}
+	return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(INFINEON_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "infineon debug mask");
+module_param(irqloops, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(irqloops, "infineon maximal irqloops (default 4)");
+
+/* Interface functions */
+
+IOFUNC_IO(ISAC, inf_hw, isac.a.io)
+IOFUNC_IO(IPAC, inf_hw, hscx.a.io)
+IOFUNC_IND(ISAC, inf_hw, isac.a.io)
+IOFUNC_IND(IPAC, inf_hw, hscx.a.io)
+IOFUNC_MEMIO(ISAC, inf_hw, u32, isac.a.p)
+IOFUNC_MEMIO(IPAC, inf_hw, u32, hscx.a.p)
+
+static irqreturn_t
+diva_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	u8 val;
+
+	spin_lock(&hw->lock);
+	val = inb((u32)hw->cfg.start + DIVA_PCI_CTRL);
+	if (!(val & DIVA_IRQ_BIT)) { /* for us or shared ? */
+		spin_unlock(&hw->lock);
+		return IRQ_NONE; /* shared */
+	}
+	hw->irqcnt++;
+	mISDNipac_irq(&hw->ipac, irqloops);
+	spin_unlock(&hw->lock);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+diva20x_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	u8 val;
+
+	spin_lock(&hw->lock);
+	val = readb(hw->cfg.p);
+	if (!(val & PITA_INT0_STATUS)) { /* for us or shared ? */
+		spin_unlock(&hw->lock);
+		return IRQ_NONE; /* shared */
+	}
+	hw->irqcnt++;
+	mISDNipac_irq(&hw->ipac, irqloops);
+	writeb(PITA_INT0_STATUS, hw->cfg.p); /* ACK PITA INT0 */
+	spin_unlock(&hw->lock);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+tiger_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	u8 val;
+
+	spin_lock(&hw->lock);
+	val = inb((u32)hw->cfg.start + TIGER_AUX_STATUS);
+	if (val & TIGER_IRQ_BIT) { /* for us or shared ? */
+		spin_unlock(&hw->lock);
+		return IRQ_NONE; /* shared */
+	}
+	hw->irqcnt++;
+	mISDNipac_irq(&hw->ipac, irqloops);
+	spin_unlock(&hw->lock);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+elsa_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	u8 val;
+
+	spin_lock(&hw->lock);
+	val = inb((u32)hw->cfg.start + ELSA_IRQ_ADDR);
+	if (!(val & ELSA_IRQ_MASK)) {
+		spin_unlock(&hw->lock);
+		return IRQ_NONE; /* shared */
+	}
+	hw->irqcnt++;
+	mISDNipac_irq(&hw->ipac, irqloops);
+	spin_unlock(&hw->lock);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+niccy_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	u32 val;
+
+	spin_lock(&hw->lock);
+	val = inl((u32)hw->cfg.start + NICCY_IRQ_CTRL_REG);
+	if (!(val & NICCY_IRQ_BIT)) { /* for us or shared ? */
+		spin_unlock(&hw->lock);
+		return IRQ_NONE; /* shared */
+	}
+	outl(val, (u32)hw->cfg.start + NICCY_IRQ_CTRL_REG);
+	hw->irqcnt++;
+	mISDNipac_irq(&hw->ipac, irqloops);
+	spin_unlock(&hw->lock);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+gazel_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	irqreturn_t ret;
+
+	spin_lock(&hw->lock);
+	ret = mISDNipac_irq(&hw->ipac, irqloops);
+	spin_unlock(&hw->lock);
+	return ret;
+}
+
+static irqreturn_t
+ipac_irq(int intno, void *dev_id)
+{
+	struct inf_hw *hw = dev_id;
+	u8 val;
+
+	spin_lock(&hw->lock);
+	val = hw->ipac.read_reg(hw, IPAC_ISTA);
+	if (!(val & 0x3f)) {
+		spin_unlock(&hw->lock);
+		return IRQ_NONE; /* shared */
+	}
+	hw->irqcnt++;
+	mISDNipac_irq(&hw->ipac, irqloops);
+	spin_unlock(&hw->lock);
+	return IRQ_HANDLED;
+}
+
+static void
+enable_hwirq(struct inf_hw *hw)
+{
+	u16 w;
+	u32 val;
+
+	switch (hw->ci->typ) {
+	case INF_DIVA201:
+	case INF_DIVA202:
+		writel(PITA_INT0_ENABLE, hw->cfg.p);
+		break;
+	case INF_SPEEDWIN:
+	case INF_SAPHIR3:
+		outb(TIGER_IRQ_BIT, (u32)hw->cfg.start + TIGER_AUX_IRQMASK);
+		break;
+	case INF_QS1000:
+		outb(QS1000_IRQ_ON, (u32)hw->cfg.start + ELSA_IRQ_ADDR);
+		break;
+	case INF_QS3000:
+		outb(QS3000_IRQ_ON, (u32)hw->cfg.start + ELSA_IRQ_ADDR);
+		break;
+	case INF_NICCY:
+		val = inl((u32)hw->cfg.start + NICCY_IRQ_CTRL_REG);
+		val |= NICCY_IRQ_ENABLE;;
+		outl(val, (u32)hw->cfg.start + NICCY_IRQ_CTRL_REG);
+		break;
+	case INF_SCT_1:
+		w = inw((u32)hw->cfg.start + SCT_PLX_IRQ_ADDR);
+		w |= SCT_PLX_IRQ_ENABLE;
+		outw(w, (u32)hw->cfg.start + SCT_PLX_IRQ_ADDR);
+		break;
+	case INF_GAZEL_R685:
+		outb(GAZEL_ISAC_EN + GAZEL_HSCX_EN + GAZEL_PCI_EN,
+			(u32)hw->cfg.start + GAZEL_INCSR);
+		break;
+	case INF_GAZEL_R753:
+		outb(GAZEL_IPAC_EN + GAZEL_PCI_EN,
+			(u32)hw->cfg.start + GAZEL_INCSR);
+		break;
+	default:
+		break;
+	}
+}
+
+static void
+disable_hwirq(struct inf_hw *hw)
+{
+	u16 w;
+	u32 val;
+
+	switch (hw->ci->typ) {
+	case INF_DIVA201:
+	case INF_DIVA202:
+		writel(0, hw->cfg.p);
+		break;
+	case INF_SPEEDWIN:
+	case INF_SAPHIR3:
+		outb(0, (u32)hw->cfg.start + TIGER_AUX_IRQMASK);
+		break;
+	case INF_QS1000:
+		outb(QS1000_IRQ_OFF, (u32)hw->cfg.start + ELSA_IRQ_ADDR);
+		break;
+	case INF_QS3000:
+		outb(QS3000_IRQ_OFF, (u32)hw->cfg.start + ELSA_IRQ_ADDR);
+		break;
+	case INF_NICCY:
+		val = inl((u32)hw->cfg.start + NICCY_IRQ_CTRL_REG);
+		val &= NICCY_IRQ_DISABLE;
+		outl(val, (u32)hw->cfg.start + NICCY_IRQ_CTRL_REG);
+		break;
+	case INF_SCT_1:
+		w = inw((u32)hw->cfg.start + SCT_PLX_IRQ_ADDR);
+		w &= (~SCT_PLX_IRQ_ENABLE);
+		outw(w, (u32)hw->cfg.start + SCT_PLX_IRQ_ADDR);
+		break;
+	case INF_GAZEL_R685:
+	case INF_GAZEL_R753:
+		outb(0, (u32)hw->cfg.start + GAZEL_INCSR);
+		break;
+	default:
+		break;
+	}
+}
+
+static void
+ipac_chip_reset(struct inf_hw *hw)
+{
+	hw->ipac.write_reg(hw, IPAC_POTA2, 0x20);
+	mdelay(5);
+	hw->ipac.write_reg(hw, IPAC_POTA2, 0x00);
+	mdelay(5);
+	hw->ipac.write_reg(hw, IPAC_CONF, hw->ipac.conf);
+	hw->ipac.write_reg(hw, IPAC_MASK, 0xc0);
+}
+
+static void
+reset_inf(struct inf_hw *hw)
+{
+	u16 w;
+	u32 val;
+
+	if (debug & DEBUG_HW)
+		pr_notice("%s: resetting card\n", hw->name);
+	switch (hw->ci->typ) {
+	case INF_DIVA20:
+	case INF_DIVA20U:
+		outb(0, (u32)hw->cfg.start + DIVA_PCI_CTRL);
+		mdelay(10);
+		outb(DIVA_RESET_BIT, (u32)hw->cfg.start + DIVA_PCI_CTRL);
+		mdelay(10);
+		/* Workaround PCI9060 */
+		outb(9, (u32)hw->cfg.start + 0x69);
+		outb(DIVA_RESET_BIT | DIVA_LED_A,
+			(u32)hw->cfg.start + DIVA_PCI_CTRL);
+		break;
+	case INF_DIVA201:
+		writel(PITA_PARA_SOFTRESET | PITA_PARA_MPX_MODE,
+			hw->cfg.p + PITA_MISC_REG);
+		mdelay(1);
+		writel(PITA_PARA_MPX_MODE, hw->cfg.p + PITA_MISC_REG);
+		mdelay(10);
+		break;
+	case INF_DIVA202:
+		writel(PITA_PARA_SOFTRESET | PITA_PARA_MPX_MODE,
+			hw->cfg.p + PITA_MISC_REG);
+		mdelay(1);
+		writel(PITA_PARA_MPX_MODE | PITA_SER_SOFTRESET,
+			hw->cfg.p + PITA_MISC_REG);
+		mdelay(10);
+		break;
+	case INF_SPEEDWIN:
+	case INF_SAPHIR3:
+		ipac_chip_reset(hw);
+		hw->ipac.write_reg(hw, IPAC_ACFG, 0xff);
+		hw->ipac.write_reg(hw, IPAC_AOE, 0x00);
+		hw->ipac.write_reg(hw, IPAC_PCFG, 0x12);
+		break;
+	case INF_QS1000:
+	case INF_QS3000:
+		ipac_chip_reset(hw);
+		hw->ipac.write_reg(hw, IPAC_ACFG, 0x00);
+		hw->ipac.write_reg(hw, IPAC_AOE, 0x3c);
+		hw->ipac.write_reg(hw, IPAC_ATX, 0xff);
+		break;
+	case INF_NICCY:
+		break;
+	case INF_SCT_1:
+		w = inw((u32)hw->cfg.start + SCT_PLX_RESET_ADDR);
+		w &= (~SCT_PLX_RESET_BIT);
+		outw(w, (u32)hw->cfg.start + SCT_PLX_RESET_ADDR);
+		mdelay(10);
+		w = inw((u32)hw->cfg.start + SCT_PLX_RESET_ADDR);
+		w |= SCT_PLX_RESET_BIT;
+		outw(w, (u32)hw->cfg.start + SCT_PLX_RESET_ADDR);
+		mdelay(10);
+		break;
+	case INF_GAZEL_R685:
+		val = inl((u32)hw->cfg.start + GAZEL_CNTRL);
+		val |= (GAZEL_RESET_9050 + GAZEL_RESET);
+		outl(val, (u32)hw->cfg.start + GAZEL_CNTRL);
+		val &= ~(GAZEL_RESET_9050 + GAZEL_RESET);
+		mdelay(4);
+		outl(val, (u32)hw->cfg.start + GAZEL_CNTRL);
+		mdelay(10);
+		hw->ipac.isac.adf2 = 0x87;
+		hw->ipac.hscx[0].slot = 0x1f;
+		hw->ipac.hscx[0].slot = 0x23;
+		break;
+	case INF_GAZEL_R753:
+		val = inl((u32)hw->cfg.start + GAZEL_CNTRL);
+		val |= (GAZEL_RESET_9050 + GAZEL_RESET);
+		outl(val, (u32)hw->cfg.start + GAZEL_CNTRL);
+		val &= ~(GAZEL_RESET_9050 + GAZEL_RESET);
+		mdelay(4);
+		outl(val, (u32)hw->cfg.start + GAZEL_CNTRL);
+		mdelay(10);
+		ipac_chip_reset(hw);
+		hw->ipac.write_reg(hw, IPAC_ACFG, 0xff);
+		hw->ipac.write_reg(hw, IPAC_AOE, 0x00);
+		hw->ipac.conf = 0x01; /* IOM off */
+		break;
+	default:
+		return;
+	}
+	enable_hwirq(hw);
+}
+
+static int
+inf_ctrl(struct inf_hw *hw, u32 cmd, u_long arg)
+{
+	int ret = 0;
+
+	switch (cmd) {
+	case HW_RESET_REQ:
+		reset_inf(hw);
+		break;
+	default:
+		pr_info("%s: %s unknown command %x %lx\n",
+			hw->name, __func__, cmd, arg);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int __devinit
+init_irq(struct inf_hw *hw)
+{
+	int	ret, cnt = 3;
+	u_long	flags;
+
+	if (!hw->ci->irqfunc)
+		return -EINVAL;
+	ret = request_irq(hw->irq, hw->ci->irqfunc, IRQF_SHARED, hw->name, hw);
+	if (ret) {
+		pr_info("%s: couldn't get interrupt %d\n", hw->name, hw->irq);
+		return ret;
+	}
+	while (cnt--) {
+		spin_lock_irqsave(&hw->lock, flags);
+		reset_inf(hw);
+		ret = hw->ipac.init(&hw->ipac);
+		if (ret) {
+			spin_unlock_irqrestore(&hw->lock, flags);
+			pr_info("%s: ISAC init failed with %d\n",
+				hw->name, ret);
+			break;
+		}
+		spin_unlock_irqrestore(&hw->lock, flags);
+		msleep_interruptible(10);
+		if (debug & DEBUG_HW)
+			pr_notice("%s: IRQ %d count %d\n", hw->name,
+				hw->irq, hw->irqcnt);
+		if (!hw->irqcnt) {
+			pr_info("%s: IRQ(%d) got no requests during init %d\n",
+				hw->name, hw->irq, 3 - cnt);
+		} else
+			return 0;
+	}
+	free_irq(hw->irq, hw);
+	return -EIO;
+}
+
+static void
+release_io(struct inf_hw *hw)
+{
+	if (hw->cfg.mode) {
+		if (hw->cfg.p) {
+			release_mem_region(hw->cfg.start, hw->cfg.size);
+			iounmap(hw->cfg.p);
+		} else
+			release_region(hw->cfg.start, hw->cfg.size);
+		hw->cfg.mode = AM_NONE;
+	}
+	if (hw->addr.mode) {
+		if (hw->addr.p) {
+			release_mem_region(hw->addr.start, hw->addr.size);
+			iounmap(hw->addr.p);
+		} else
+			release_region(hw->addr.start, hw->addr.size);
+		hw->addr.mode = AM_NONE;
+	}
+}
+
+static int __devinit
+setup_io(struct inf_hw *hw)
+{
+	int err = 0;
+
+	if (hw->ci->cfg_mode) {
+		hw->cfg.start = pci_resource_start(hw->pdev, hw->ci->cfg_bar);
+		hw->cfg.size = pci_resource_len(hw->pdev, hw->ci->cfg_bar);
+		if (hw->ci->cfg_mode == AM_MEMIO) {
+			if (!request_mem_region(hw->cfg.start, hw->cfg.size,
+			    hw->name))
+				err = -EBUSY;
+		} else {
+			if (!request_region(hw->cfg.start, hw->cfg.size,
+			    hw->name))
+				err = -EBUSY;
+		}
+		if (err) {
+			pr_info("mISDN: %s config port %lx (%lu bytes)"
+				"already in use\n", hw->name,
+				(ulong)hw->cfg.start, (ulong)hw->cfg.size);
+			return err;
+		}
+		if (hw->ci->cfg_mode == AM_MEMIO)
+			hw->cfg.p = ioremap(hw->cfg.start, hw->cfg.size);
+		hw->cfg.mode = hw->ci->cfg_mode;
+		if (debug & DEBUG_HW)
+			pr_notice("%s: IO cfg %lx (%lu bytes) mode%d\n",
+				hw->name, (ulong)hw->cfg.start,
+				(ulong)hw->cfg.size, hw->ci->cfg_mode);
+
+	}
+	if (hw->ci->addr_mode) {
+		hw->addr.start = pci_resource_start(hw->pdev, hw->ci->addr_bar);
+		hw->addr.size = pci_resource_len(hw->pdev, hw->ci->addr_bar);
+		if (hw->ci->addr_mode == AM_MEMIO) {
+			if (!request_mem_region(hw->addr.start, hw->addr.size,
+			    hw->name))
+				err = -EBUSY;
+		} else {
+			if (!request_region(hw->addr.start, hw->addr.size,
+			    hw->name))
+				err = -EBUSY;
+		}
+		if (err) {
+			pr_info("mISDN: %s address port %lx (%lu bytes)"
+				"already in use\n", hw->name,
+				(ulong)hw->addr.start, (ulong)hw->addr.size);
+			return err;
+		}
+		if (hw->ci->addr_mode == AM_MEMIO)
+			hw->addr.p = ioremap(hw->addr.start, hw->addr.size);
+		hw->addr.mode = hw->ci->addr_mode;
+		if (debug & DEBUG_HW)
+			pr_notice("%s: IO addr %lx (%lu bytes) mode%d\n",
+				hw->name, (ulong)hw->addr.start,
+				(ulong)hw->addr.size, hw->ci->addr_mode);
+
+	}
+
+	switch (hw->ci->typ) {
+	case INF_DIVA20:
+	case INF_DIVA20U:
+		hw->ipac.type = IPAC_TYPE_ISAC | IPAC_TYPE_HSCX;
+		hw->isac.mode = hw->cfg.mode;
+		hw->isac.a.io.ale = (u32)hw->cfg.start + DIVA_ISAC_ALE;
+		hw->isac.a.io.port = (u32)hw->cfg.start + DIVA_ISAC_PORT;
+		hw->hscx.mode = hw->cfg.mode;
+		hw->hscx.a.io.ale = (u32)hw->cfg.start + DIVA_HSCX_ALE;
+		hw->hscx.a.io.port = (u32)hw->cfg.start + DIVA_HSCX_PORT;
+		break;
+	case INF_DIVA201:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.mode = hw->addr.mode;
+		hw->isac.a.p = hw->addr.p;
+		hw->hscx.mode = hw->addr.mode;
+		hw->hscx.a.p = hw->addr.p;
+		break;
+	case INF_DIVA202:
+		hw->ipac.type = IPAC_TYPE_IPACX;
+		hw->isac.mode = hw->addr.mode;
+		hw->isac.a.p = hw->addr.p;
+		hw->hscx.mode = hw->addr.mode;
+		hw->hscx.a.p = hw->addr.p;
+		break;
+	case INF_SPEEDWIN:
+	case INF_SAPHIR3:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.mode = hw->cfg.mode;
+		hw->isac.a.io.ale = (u32)hw->cfg.start + TIGER_IPAC_ALE;
+		hw->isac.a.io.port = (u32)hw->cfg.start + TIGER_IPAC_PORT;
+		hw->hscx.mode = hw->cfg.mode;
+		hw->hscx.a.io.ale = (u32)hw->cfg.start + TIGER_IPAC_ALE;
+		hw->hscx.a.io.port = (u32)hw->cfg.start + TIGER_IPAC_PORT;
+		outb(0xff, (ulong)hw->cfg.start);
+		mdelay(1);
+		outb(0x00, (ulong)hw->cfg.start);
+		mdelay(1);
+		outb(TIGER_IOMASK, (ulong)hw->cfg.start + TIGER_AUX_CTRL);
+		break;
+	case INF_QS1000:
+	case INF_QS3000:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.a.io.ale = (u32)hw->addr.start;
+		hw->isac.a.io.port = (u32)hw->addr.start + 1;
+		hw->isac.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = (u32)hw->addr.start;
+		hw->hscx.a.io.port = (u32)hw->addr.start + 1;
+		hw->hscx.mode = hw->addr.mode;
+		break;
+	case INF_NICCY:
+		hw->ipac.type = IPAC_TYPE_ISAC | IPAC_TYPE_HSCX;
+		hw->isac.mode = hw->addr.mode;
+		hw->isac.a.io.ale = (u32)hw->addr.start + NICCY_ISAC_ALE;
+		hw->isac.a.io.port = (u32)hw->addr.start + NICCY_ISAC_PORT;
+		hw->hscx.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = (u32)hw->addr.start + NICCY_HSCX_ALE;
+		hw->hscx.a.io.port = (u32)hw->addr.start + NICCY_HSCX_PORT;
+		break;
+	case INF_SCT_1:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.a.io.ale = (u32)hw->addr.start;
+		hw->isac.a.io.port = hw->isac.a.io.ale + 4;
+		hw->isac.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = hw->isac.a.io.ale;
+		hw->hscx.a.io.port = hw->isac.a.io.port;
+		hw->hscx.mode = hw->addr.mode;
+		break;
+	case INF_SCT_2:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.a.io.ale = (u32)hw->addr.start + 0x08;
+		hw->isac.a.io.port = hw->isac.a.io.ale + 4;
+		hw->isac.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = hw->isac.a.io.ale;
+		hw->hscx.a.io.port = hw->isac.a.io.port;
+		hw->hscx.mode = hw->addr.mode;
+		break;
+	case INF_SCT_3:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.a.io.ale = (u32)hw->addr.start + 0x10;
+		hw->isac.a.io.port = hw->isac.a.io.ale + 4;
+		hw->isac.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = hw->isac.a.io.ale;
+		hw->hscx.a.io.port = hw->isac.a.io.port;
+		hw->hscx.mode = hw->addr.mode;
+		break;
+	case INF_SCT_4:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.a.io.ale = (u32)hw->addr.start + 0x20;
+		hw->isac.a.io.port = hw->isac.a.io.ale + 4;
+		hw->isac.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = hw->isac.a.io.ale;
+		hw->hscx.a.io.port = hw->isac.a.io.port;
+		hw->hscx.mode = hw->addr.mode;
+		break;
+	case INF_GAZEL_R685:
+		hw->ipac.type = IPAC_TYPE_ISAC | IPAC_TYPE_HSCX;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.mode = hw->addr.mode;
+		hw->isac.a.io.port = (u32)hw->addr.start;
+		hw->hscx.mode = hw->addr.mode;
+		hw->hscx.a.io.port = hw->isac.a.io.port;
+		break;
+	case INF_GAZEL_R753:
+		hw->ipac.type = IPAC_TYPE_IPAC;
+		hw->ipac.isac.off = 0x80;
+		hw->isac.mode = hw->addr.mode;
+		hw->isac.a.io.ale = (u32)hw->addr.start;
+		hw->isac.a.io.port = (u32)hw->addr.start + GAZEL_IPAC_DATA_PORT;
+		hw->hscx.mode = hw->addr.mode;
+		hw->hscx.a.io.ale = hw->isac.a.io.ale;
+		hw->hscx.a.io.port = hw->isac.a.io.port;
+		break;
+	default:
+		return -EINVAL;
+	}
+	switch (hw->isac.mode) {
+	case AM_MEMIO:
+		ASSIGN_FUNC_IPAC(MIO, hw->ipac);
+		break;
+	case AM_IND_IO:
+		ASSIGN_FUNC_IPAC(IND, hw->ipac);
+		break;
+	case AM_IO:
+		ASSIGN_FUNC_IPAC(IO, hw->ipac);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static void
+release_card(struct inf_hw *card) {
+	ulong	flags;
+	int	i;
+
+	spin_lock_irqsave(&card->lock, flags);
+	disable_hwirq(card);
+	spin_unlock_irqrestore(&card->lock, flags);
+	card->ipac.isac.release(&card->ipac.isac);
+	free_irq(card->irq, card);
+	mISDN_unregister_device(&card->ipac.isac.dch.dev);
+	release_io(card);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	switch (card->ci->typ) {
+	case INF_SCT_2:
+	case INF_SCT_3:
+	case INF_SCT_4:
+		break;
+	case INF_SCT_1:
+		for (i = 0; i < 3; i++) {
+			if (card->sc[i])
+				release_card(card->sc[i]);
+			card->sc[i] = NULL;
+		}
+	default:
+		pci_disable_device(card->pdev);
+		pci_set_drvdata(card->pdev, NULL);
+		break;
+	}
+	kfree(card);
+	inf_cnt--;
+}
+
+static int __devinit
+setup_instance(struct inf_hw *card)
+{
+	int err;
+	ulong flags;
+
+	snprintf(card->name, MISDN_MAX_IDLEN - 1, "%s.%d", card->ci->name,
+		inf_cnt + 1);
+	write_lock_irqsave(&card_lock, flags);
+	list_add_tail(&card->list, &Cards);
+	write_unlock_irqrestore(&card_lock, flags);
+
+	_set_debug(card);
+	card->ipac.isac.name = card->name;
+	card->ipac.name = card->name;
+	card->ipac.owner = THIS_MODULE;
+	spin_lock_init(&card->lock);
+	card->ipac.isac.hwlock = &card->lock;
+	card->ipac.hwlock = &card->lock;
+	card->ipac.ctrl = (void *)&inf_ctrl;
+
+	err = setup_io(card);
+	if (err)
+		goto error_setup;
+
+	card->ipac.isac.dch.dev.Bprotocols =
+		mISDNipac_init(&card->ipac, card);
+
+	if (card->ipac.isac.dch.dev.Bprotocols == 0)
+		goto error_setup;;
+
+	err = mISDN_register_device(&card->ipac.isac.dch.dev,
+		&card->pdev->dev, card->name);
+	if (err)
+		goto error;
+
+	err = init_irq(card);
+	if (!err)  {
+		inf_cnt++;
+		pr_notice("Infineon %d cards installed\n", inf_cnt);
+		return 0;
+	}
+	mISDN_unregister_device(&card->ipac.isac.dch.dev);
+error:
+	card->ipac.release(&card->ipac);
+error_setup:
+	release_io(card);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	return err;
+}
+
+static const struct inf_cinfo inf_card_info[] = {
+	{
+		INF_DIVA20,
+		"Dialogic Diva 2.0",
+		"diva20",
+		AM_IND_IO, AM_NONE, 2, 0,
+		&diva_irq
+	},
+	{
+		INF_DIVA20U,
+		"Dialogic Diva 2.0U",
+		"diva20U",
+		AM_IND_IO, AM_NONE, 2, 0,
+		&diva_irq
+	},
+	{
+		INF_DIVA201,
+		"Dialogic Diva 2.01",
+		"diva201",
+		AM_MEMIO, AM_MEMIO, 0, 1,
+		&diva20x_irq
+	},
+	{
+		INF_DIVA202,
+		"Dialogic Diva 2.02",
+		"diva202",
+		AM_MEMIO, AM_MEMIO, 0, 1,
+		&diva20x_irq
+	},
+	{
+		INF_SPEEDWIN,
+		"Sedlbauer SpeedWin PCI",
+		"speedwin",
+		AM_IND_IO, AM_NONE, 0, 0,
+		&tiger_irq
+	},
+	{
+		INF_SAPHIR3,
+		"HST Saphir 3",
+		"saphir",
+		AM_IND_IO, AM_NONE, 0, 0,
+		&tiger_irq
+	},
+	{
+		INF_QS1000,
+		"Develo Microlink PCI",
+		"qs1000",
+		AM_IO, AM_IND_IO, 1, 3,
+		&elsa_irq
+	},
+	{
+		INF_QS3000,
+		"Develo QuickStep 3000",
+		"qs3000",
+		AM_IO, AM_IND_IO, 1, 3,
+		&elsa_irq
+	},
+	{
+		INF_NICCY,
+		"Sagem NICCY",
+		"niccy",
+		AM_IO, AM_IND_IO, 0, 1,
+		&niccy_irq
+	},
+	{
+		INF_SCT_1,
+		"SciTel Quadro",
+		"p1_scitel",
+		AM_IO, AM_IND_IO, 1, 5,
+		&ipac_irq
+	},
+	{
+		INF_SCT_2,
+		"SciTel Quadro",
+		"p2_scitel",
+		AM_NONE, AM_IND_IO, 0, 4,
+		&ipac_irq
+	},
+	{
+		INF_SCT_3,
+		"SciTel Quadro",
+		"p3_scitel",
+		AM_NONE, AM_IND_IO, 0, 3,
+		&ipac_irq
+	},
+	{
+		INF_SCT_4,
+		"SciTel Quadro",
+		"p4_scitel",
+		AM_NONE, AM_IND_IO, 0, 2,
+		&ipac_irq
+	},
+	{
+		INF_GAZEL_R685,
+		"Gazel R685",
+		"gazel685",
+		AM_IO, AM_IO, 1, 2,
+		&gazel_irq
+	},
+	{
+		INF_GAZEL_R753,
+		"Gazel R753",
+		"gazel753",
+		AM_IO, AM_IND_IO, 1, 2,
+		&ipac_irq
+	},
+	{
+		INF_NONE,
+	}
+};
+
+static const struct inf_cinfo * __devinit
+get_card_info(enum inf_types typ)
+{
+	const struct inf_cinfo *ci = inf_card_info;
+
+	while (ci->typ != INF_NONE) {
+		if (ci->typ == typ)
+			return ci;
+		ci++;
+	}
+	return NULL;
+}
+
+static int __devinit
+inf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int err = -ENOMEM;
+	struct inf_hw *card;
+
+	card = kzalloc(sizeof(struct inf_hw), GFP_KERNEL);
+	if (!card) {
+		pr_info("No memory for Infineon ISDN card\n");
+		return err;
+	}
+	card->pdev = pdev;
+	err = pci_enable_device(pdev);
+	if (err) {
+		kfree(card);
+		return err;
+	}
+	card->ci = get_card_info(ent->driver_data);
+	if (!card->ci) {
+		pr_info("mISDN: do not have informations about adapter at %s\n",
+			pci_name(pdev));
+		kfree(card);
+		return -EINVAL;
+	} else
+		pr_notice("mISDN: found adapter %s at %s\n",
+			card->ci->full, pci_name(pdev));
+
+	card->irq = pdev->irq;
+	pci_set_drvdata(pdev, card);
+	err = setup_instance(card);
+	if (err) {
+		pci_disable_device(card->pdev);
+		kfree(card);
+		pci_set_drvdata(pdev, NULL);
+	} else if (ent->driver_data == INF_SCT_1) {
+		int i;
+		struct inf_hw *sc;
+
+		for (i = 1; i < 4; i++) {
+			sc = kzalloc(sizeof(struct inf_hw), GFP_KERNEL);
+			if (!sc) {
+				release_card(card);
+				return -ENOMEM;
+			}
+			sc->irq = card->irq;
+			sc->pdev = card->pdev;
+			sc->ci = card->ci + i;
+			err = setup_instance(sc);
+			if (err) {
+				kfree(sc);
+				release_card(card);
+			} else
+				card->sc[i - 1] = sc;
+		}
+	}
+	return err;
+}
+
+static void __devexit
+inf_remove(struct pci_dev *pdev)
+{
+	struct inf_hw	*card = pci_get_drvdata(pdev);
+
+	if (card)
+		release_card(card);
+	else
+		pr_debug("%s: drvdata allready removed\n", __func__);
+}
+
+static struct pci_driver infineon_driver = {
+	.name = "ISDN Infineon pci",
+	.probe = inf_probe,
+	.remove = __devexit_p(inf_remove),
+	.id_table = infineon_ids,
+};
+
+static int __init
+infineon_init(void)
+{
+	int err;
+
+	pr_notice("Infineon ISDN Driver Rev. %s\n", INFINEON_REV);
+	err = pci_register_driver(&infineon_driver);
+	return err;
+}
+
+static void __exit
+infineon_cleanup(void)
+{
+	pci_unregister_driver(&infineon_driver);
+}
+
+module_init(infineon_init);
+module_exit(infineon_cleanup);

drivers/isdn/hardware/mISDN/mISDNipac.c

@@ -0,0 +1,1655 @@
+/*
+ * isac.c   ISAC specific routines
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/mISDNhw.h>
+#include "ipac.h"
+
+
+#define DBUSY_TIMER_VALUE	80
+#define ARCOFI_USE		1
+
+#define ISAC_REV		"2.0"
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_VERSION(ISAC_REV);
+MODULE_LICENSE("GPL v2");
+
+#define ReadISAC(is, o)		(is->read_reg(is->dch.hw, o + is->off))
+#define	WriteISAC(is, o, v)	(is->write_reg(is->dch.hw, o + is->off, v))
+#define ReadHSCX(h, o)		(h->ip->read_reg(h->ip->hw, h->off + o))
+#define WriteHSCX(h, o, v)	(h->ip->write_reg(h->ip->hw, h->off + o, v))
+#define ReadIPAC(ip, o)		(ip->read_reg(ip->hw, o))
+#define WriteIPAC(ip, o, v)	(ip->write_reg(ip->hw, o, v))
+
+static inline void
+ph_command(struct isac_hw *isac, u8 command)
+{
+	pr_debug("%s: ph_command %x\n", isac->name, command);
+	if (isac->type & IPAC_TYPE_ISACX)
+		WriteISAC(isac, ISACX_CIX0, (command << 4) | 0xE);
+	else
+		WriteISAC(isac, ISAC_CIX0, (command << 2) | 3);
+}
+
+static void
+isac_ph_state_change(struct isac_hw *isac)
+{
+	switch (isac->state) {
+	case (ISAC_IND_RS):
+	case (ISAC_IND_EI):
+		ph_command(isac, ISAC_CMD_DUI);
+	}
+	schedule_event(&isac->dch, FLG_PHCHANGE);
+}
+
+static void
+isac_ph_state_bh(struct dchannel *dch)
+{
+	struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
+
+	switch (isac->state) {
+	case ISAC_IND_RS:
+	case ISAC_IND_EI:
+		dch->state = 0;
+		l1_event(dch->l1, HW_RESET_IND);
+		break;
+	case ISAC_IND_DID:
+		dch->state = 3;
+		l1_event(dch->l1, HW_DEACT_CNF);
+		break;
+	case ISAC_IND_DR:
+		dch->state = 3;
+		l1_event(dch->l1, HW_DEACT_IND);
+		break;
+	case ISAC_IND_PU:
+		dch->state = 4;
+		l1_event(dch->l1, HW_POWERUP_IND);
+		break;
+	case ISAC_IND_RSY:
+		if (dch->state <= 5) {
+			dch->state = 5;
+			l1_event(dch->l1, ANYSIGNAL);
+		} else {
+			dch->state = 8;
+			l1_event(dch->l1, LOSTFRAMING);
+		}
+		break;
+	case ISAC_IND_ARD:
+		dch->state = 6;
+		l1_event(dch->l1, INFO2);
+		break;
+	case ISAC_IND_AI8:
+		dch->state = 7;
+		l1_event(dch->l1, INFO4_P8);
+		break;
+	case ISAC_IND_AI10:
+		dch->state = 7;
+		l1_event(dch->l1, INFO4_P10);
+		break;
+	}
+	pr_debug("%s: TE newstate %x\n", isac->name, dch->state);
+}
+
+void
+isac_empty_fifo(struct isac_hw *isac, int count)
+{
+	u8 *ptr;
+
+	pr_debug("%s: %s  %d\n", isac->name, __func__, count);
+
+	if (!isac->dch.rx_skb) {
+		isac->dch.rx_skb = mI_alloc_skb(isac->dch.maxlen, GFP_ATOMIC);
+		if (!isac->dch.rx_skb) {
+			pr_info("%s: D receive out of memory\n", isac->name);
+			WriteISAC(isac, ISAC_CMDR, 0x80);
+			return;
+		}
+	}
+	if ((isac->dch.rx_skb->len + count) >= isac->dch.maxlen) {
+		pr_debug("%s: %s overrun %d\n", isac->name, __func__,
+			    isac->dch.rx_skb->len + count);
+		WriteISAC(isac, ISAC_CMDR, 0x80);
+		return;
+	}
+	ptr = skb_put(isac->dch.rx_skb, count);
+	isac->read_fifo(isac->dch.hw, isac->off, ptr, count);
+	WriteISAC(isac, ISAC_CMDR, 0x80);
+	if (isac->dch.debug & DEBUG_HW_DFIFO) {
+		char	pfx[MISDN_MAX_IDLEN + 16];
+
+		snprintf(pfx, MISDN_MAX_IDLEN + 15, "D-recv %s %d ",
+			isac->name, count);
+		print_hex_dump_bytes(pfx, DUMP_PREFIX_OFFSET, ptr, count);
+	}
+}
+
+static void
+isac_fill_fifo(struct isac_hw *isac)
+{
+	int count, more;
+	u8 *ptr;
+
+	if (!isac->dch.tx_skb)
+		return;
+	count = isac->dch.tx_skb->len - isac->dch.tx_idx;
+	if (count <= 0)
+		return;
+
+	more = 0;
+	if (count > 32) {
+		more = !0;
+		count = 32;
+	}
+	pr_debug("%s: %s  %d\n", isac->name, __func__, count);
+	ptr = isac->dch.tx_skb->data + isac->dch.tx_idx;
+	isac->dch.tx_idx += count;
+	isac->write_fifo(isac->dch.hw, isac->off, ptr, count);
+	WriteISAC(isac, ISAC_CMDR, more ? 0x8 : 0xa);
+	if (test_and_set_bit(FLG_BUSY_TIMER, &isac->dch.Flags)) {
+		pr_debug("%s: %s dbusytimer running\n", isac->name, __func__);
+		del_timer(&isac->dch.timer);
+	}
+	init_timer(&isac->dch.timer);
+	isac->dch.timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000);
+	add_timer(&isac->dch.timer);
+	if (isac->dch.debug & DEBUG_HW_DFIFO) {
+		char	pfx[MISDN_MAX_IDLEN + 16];
+
+		snprintf(pfx, MISDN_MAX_IDLEN + 15, "D-send %s %d ",
+			isac->name, count);
+		print_hex_dump_bytes(pfx, DUMP_PREFIX_OFFSET, ptr, count);
+	}
+}
+
+static void
+isac_rme_irq(struct isac_hw *isac)
+{
+	u8 val, count;
+
+	val = ReadISAC(isac, ISAC_RSTA);
+	if ((val & 0x70) != 0x20) {
+		if (val & 0x40) {
+			pr_debug("%s: ISAC RDO\n", isac->name);
+#ifdef ERROR_STATISTIC
+			isac->dch.err_rx++;
+#endif
+		}
+		if (!(val & 0x20)) {
+			pr_debug("%s: ISAC CRC error\n", isac->name);
+#ifdef ERROR_STATISTIC
+			isac->dch.err_crc++;
+#endif
+		}
+		WriteISAC(isac, ISAC_CMDR, 0x80);
+		if (isac->dch.rx_skb)
+			dev_kfree_skb(isac->dch.rx_skb);
+		isac->dch.rx_skb = NULL;
+	} else {
+		count = ReadISAC(isac, ISAC_RBCL) & 0x1f;
+		if (count == 0)
+			count = 32;
+		isac_empty_fifo(isac, count);
+		recv_Dchannel(&isac->dch);
+	}
+}
+
+static void
+isac_xpr_irq(struct isac_hw *isac)
+{
+	if (test_and_clear_bit(FLG_BUSY_TIMER, &isac->dch.Flags))
+		del_timer(&isac->dch.timer);
+	if (isac->dch.tx_skb && isac->dch.tx_idx < isac->dch.tx_skb->len) {
+		isac_fill_fifo(isac);
+	} else {
+		if (isac->dch.tx_skb)
+			dev_kfree_skb(isac->dch.tx_skb);
+		if (get_next_dframe(&isac->dch))
+			isac_fill_fifo(isac);
+	}
+}
+
+static void
+isac_retransmit(struct isac_hw *isac)
+{
+	if (test_and_clear_bit(FLG_BUSY_TIMER, &isac->dch.Flags))
+		del_timer(&isac->dch.timer);
+	if (test_bit(FLG_TX_BUSY, &isac->dch.Flags)) {
+		/* Restart frame */
+		isac->dch.tx_idx = 0;
+		isac_fill_fifo(isac);
+	} else if (isac->dch.tx_skb) { /* should not happen */
+		pr_info("%s: tx_skb exist but not busy\n", isac->name);
+		test_and_set_bit(FLG_TX_BUSY, &isac->dch.Flags);
+		isac->dch.tx_idx = 0;
+		isac_fill_fifo(isac);
+	} else {
+		pr_info("%s: ISAC XDU no TX_BUSY\n", isac->name);
+		if (get_next_dframe(&isac->dch))
+			isac_fill_fifo(isac);
+	}
+}
+
+static void
+isac_mos_irq(struct isac_hw *isac)
+{
+	u8 val;
+	int ret;
+
+	val = ReadISAC(isac, ISAC_MOSR);
+	pr_debug("%s: ISAC MOSR %02x\n", isac->name, val);
+#if ARCOFI_USE
+	if (val & 0x08) {
+		if (!isac->mon_rx) {
+			isac->mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC);
+			if (!isac->mon_rx) {
+				pr_info("%s: ISAC MON RX out of memory!\n",
+					isac->name);
+				isac->mocr &= 0xf0;
+				isac->mocr |= 0x0a;
+				WriteISAC(isac, ISAC_MOCR, isac->mocr);
+				goto afterMONR0;
+			} else
+				isac->mon_rxp = 0;
+		}
+		if (isac->mon_rxp >= MAX_MON_FRAME) {
+			isac->mocr &= 0xf0;
+			isac->mocr |= 0x0a;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+			isac->mon_rxp = 0;
+			pr_debug("%s: ISAC MON RX overflow!\n", isac->name);
+			goto afterMONR0;
+		}
+		isac->mon_rx[isac->mon_rxp++] = ReadISAC(isac, ISAC_MOR0);
+		pr_debug("%s: ISAC MOR0 %02x\n", isac->name,
+			isac->mon_rx[isac->mon_rxp - 1]);
+		if (isac->mon_rxp == 1) {
+			isac->mocr |= 0x04;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+		}
+	}
+afterMONR0:
+	if (val & 0x80) {
+		if (!isac->mon_rx) {
+			isac->mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC);
+			if (!isac->mon_rx) {
+				pr_info("%s: ISAC MON RX out of memory!\n",
+					isac->name);
+				isac->mocr &= 0x0f;
+				isac->mocr |= 0xa0;
+				WriteISAC(isac, ISAC_MOCR, isac->mocr);
+				goto afterMONR1;
+			} else
+				isac->mon_rxp = 0;
+		}
+		if (isac->mon_rxp >= MAX_MON_FRAME) {
+			isac->mocr &= 0x0f;
+			isac->mocr |= 0xa0;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+			isac->mon_rxp = 0;
+			pr_debug("%s: ISAC MON RX overflow!\n", isac->name);
+			goto afterMONR1;
+		}
+		isac->mon_rx[isac->mon_rxp++] = ReadISAC(isac, ISAC_MOR1);
+		pr_debug("%s: ISAC MOR1 %02x\n", isac->name,
+			isac->mon_rx[isac->mon_rxp - 1]);
+		isac->mocr |= 0x40;
+		WriteISAC(isac, ISAC_MOCR, isac->mocr);
+	}
+afterMONR1:
+	if (val & 0x04) {
+		isac->mocr &= 0xf0;
+		WriteISAC(isac, ISAC_MOCR, isac->mocr);
+		isac->mocr |= 0x0a;
+		WriteISAC(isac, ISAC_MOCR, isac->mocr);
+		if (isac->monitor) {
+			ret = isac->monitor(isac->dch.hw, MONITOR_RX_0,
+				isac->mon_rx, isac->mon_rxp);
+			if (ret)
+				kfree(isac->mon_rx);
+		} else {
+			pr_info("%s: MONITOR 0 received %d but no user\n",
+				isac->name, isac->mon_rxp);
+			kfree(isac->mon_rx);
+		}
+		isac->mon_rx = NULL;
+		isac->mon_rxp = 0;
+	}
+	if (val & 0x40) {
+		isac->mocr &= 0x0f;
+		WriteISAC(isac, ISAC_MOCR, isac->mocr);
+		isac->mocr |= 0xa0;
+		WriteISAC(isac, ISAC_MOCR, isac->mocr);
+		if (isac->monitor) {
+			ret = isac->monitor(isac->dch.hw, MONITOR_RX_1,
+				isac->mon_rx, isac->mon_rxp);
+			if (ret)
+				kfree(isac->mon_rx);
+		} else {
+			pr_info("%s: MONITOR 1 received %d but no user\n",
+				isac->name, isac->mon_rxp);
+			kfree(isac->mon_rx);
+		}
+		isac->mon_rx = NULL;
+		isac->mon_rxp = 0;
+	}
+	if (val & 0x02) {
+		if ((!isac->mon_tx) || (isac->mon_txc &&
+			(isac->mon_txp >= isac->mon_txc) && !(val & 0x08))) {
+			isac->mocr &= 0xf0;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+			isac->mocr |= 0x0a;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+			if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
+				if (isac->monitor)
+					ret = isac->monitor(isac->dch.hw,
+						MONITOR_TX_0, NULL, 0);
+			}
+			kfree(isac->mon_tx);
+			isac->mon_tx = NULL;
+			isac->mon_txc = 0;
+			isac->mon_txp = 0;
+			goto AfterMOX0;
+		}
+		if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
+			if (isac->monitor)
+				ret = isac->monitor(isac->dch.hw,
+					MONITOR_TX_0, NULL, 0);
+			kfree(isac->mon_tx);
+			isac->mon_tx = NULL;
+			isac->mon_txc = 0;
+			isac->mon_txp = 0;
+			goto AfterMOX0;
+		}
+		WriteISAC(isac, ISAC_MOX0, isac->mon_tx[isac->mon_txp++]);
+		pr_debug("%s: ISAC %02x -> MOX0\n", isac->name,
+			isac->mon_tx[isac->mon_txp - 1]);
+	}
+AfterMOX0:
+	if (val & 0x20) {
+		if ((!isac->mon_tx) || (isac->mon_txc &&
+			(isac->mon_txp >= isac->mon_txc) && !(val & 0x80))) {
+			isac->mocr &= 0x0f;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+			isac->mocr |= 0xa0;
+			WriteISAC(isac, ISAC_MOCR, isac->mocr);
+			if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
+				if (isac->monitor)
+					ret = isac->monitor(isac->dch.hw,
+						MONITOR_TX_1, NULL, 0);
+			}
+			kfree(isac->mon_tx);
+			isac->mon_tx = NULL;
+			isac->mon_txc = 0;
+			isac->mon_txp = 0;
+			goto AfterMOX1;
+		}
+		if (isac->mon_txc && (isac->mon_txp >= isac->mon_txc)) {
+			if (isac->monitor)
+				ret = isac->monitor(isac->dch.hw,
+					MONITOR_TX_1, NULL, 0);
+			kfree(isac->mon_tx);
+			isac->mon_tx = NULL;
+			isac->mon_txc = 0;
+			isac->mon_txp = 0;
+			goto AfterMOX1;
+		}
+		WriteISAC(isac, ISAC_MOX1, isac->mon_tx[isac->mon_txp++]);
+		pr_debug("%s: ISAC %02x -> MOX1\n", isac->name,
+			isac->mon_tx[isac->mon_txp - 1]);
+	}
+AfterMOX1:
+	val = 0; /* dummy to avoid warning */
+#endif
+}
+
+static void
+isac_cisq_irq(struct isac_hw *isac) {
+	u8 val;
+
+	val = ReadISAC(isac, ISAC_CIR0);
+	pr_debug("%s: ISAC CIR0 %02X\n", isac->name, val);
+	if (val & 2) {
+		pr_debug("%s: ph_state change %x->%x\n", isac->name,
+			isac->state, (val >> 2) & 0xf);
+		isac->state = (val >> 2) & 0xf;
+		isac_ph_state_change(isac);
+	}
+	if (val & 1) {
+		val = ReadISAC(isac, ISAC_CIR1);
+		pr_debug("%s: ISAC CIR1 %02X\n", isac->name, val);
+	}
+}
+
+static void
+isacsx_cic_irq(struct isac_hw *isac)
+{
+	u8 val;
+
+	val = ReadISAC(isac, ISACX_CIR0);
+	pr_debug("%s: ISACX CIR0 %02X\n", isac->name, val);
+	if (val & ISACX_CIR0_CIC0) {
+		pr_debug("%s: ph_state change %x->%x\n", isac->name,
+			isac->state, val >> 4);
+		isac->state = val >> 4;
+		isac_ph_state_change(isac);
+	}
+}
+
+static void
+isacsx_rme_irq(struct isac_hw *isac)
+{
+	int count;
+	u8 val;
+
+	val = ReadISAC(isac, ISACX_RSTAD);
+	if ((val & (ISACX_RSTAD_VFR |
+		    ISACX_RSTAD_RDO |
+		    ISACX_RSTAD_CRC |
+		    ISACX_RSTAD_RAB))
+	    != (ISACX_RSTAD_VFR | ISACX_RSTAD_CRC)) {
+		pr_debug("%s: RSTAD %#x, dropped\n", isac->name, val);
+#ifdef ERROR_STATISTIC
+		if (val & ISACX_RSTAD_CRC)
+			isac->dch.err_rx++;
+		else
+			isac->dch.err_crc++;
+#endif
+		WriteISAC(isac, ISACX_CMDRD, ISACX_CMDRD_RMC);
+		if (isac->dch.rx_skb)
+			dev_kfree_skb(isac->dch.rx_skb);
+		isac->dch.rx_skb = NULL;
+	} else {
+		count = ReadISAC(isac, ISACX_RBCLD) & 0x1f;
+		if (count == 0)
+			count = 32;
+		isac_empty_fifo(isac, count);
+		if (isac->dch.rx_skb) {
+			skb_trim(isac->dch.rx_skb, isac->dch.rx_skb->len - 1);
+			pr_debug("%s: dchannel received %d\n", isac->name,
+				isac->dch.rx_skb->len);
+			recv_Dchannel(&isac->dch);
+		}
+	}
+}
+
+irqreturn_t
+mISDNisac_irq(struct isac_hw *isac, u8 val)
+{
+	if (unlikely(!val))
+		return IRQ_NONE;
+	pr_debug("%s: ISAC interrupt %02x\n", isac->name, val);
+	if (isac->type & IPAC_TYPE_ISACX) {
+		if (val & ISACX__CIC)
+			isacsx_cic_irq(isac);
+		if (val & ISACX__ICD) {
+			val = ReadISAC(isac, ISACX_ISTAD);
+			pr_debug("%s: ISTAD %02x\n", isac->name, val);
+			if (val & ISACX_D_XDU) {
+				pr_debug("%s: ISAC XDU\n", isac->name);
+#ifdef ERROR_STATISTIC
+				isac->dch.err_tx++;
+#endif
+				isac_retransmit(isac);
+			}
+			if (val & ISACX_D_XMR) {
+				pr_debug("%s: ISAC XMR\n", isac->name);
+#ifdef ERROR_STATISTIC
+				isac->dch.err_tx++;
+#endif
+				isac_retransmit(isac);
+			}
+			if (val & ISACX_D_XPR)
+				isac_xpr_irq(isac);
+			if (val & ISACX_D_RFO) {
+				pr_debug("%s: ISAC RFO\n", isac->name);
+				WriteISAC(isac, ISACX_CMDRD, ISACX_CMDRD_RMC);
+			}
+			if (val & ISACX_D_RME)
+				isacsx_rme_irq(isac);
+			if (val & ISACX_D_RPF)
+				isac_empty_fifo(isac, 0x20);
+		}
+	} else {
+		if (val & 0x80)	/* RME */
+			isac_rme_irq(isac);
+		if (val & 0x40)	/* RPF */
+			isac_empty_fifo(isac, 32);
+		if (val & 0x10)	/* XPR */
+			isac_xpr_irq(isac);
+		if (val & 0x04)	/* CISQ */
+			isac_cisq_irq(isac);
+		if (val & 0x20)	/* RSC - never */
+			pr_debug("%s: ISAC RSC interrupt\n", isac->name);
+		if (val & 0x02)	/* SIN - never */
+			pr_debug("%s: ISAC SIN interrupt\n", isac->name);
+		if (val & 0x01) {	/* EXI */
+			val = ReadISAC(isac, ISAC_EXIR);
+			pr_debug("%s: ISAC EXIR %02x\n", isac->name, val);
+			if (val & 0x80)	/* XMR */
+				pr_debug("%s: ISAC XMR\n", isac->name);
+			if (val & 0x40) { /* XDU */
+				pr_debug("%s: ISAC XDU\n", isac->name);
+#ifdef ERROR_STATISTIC
+				isac->dch.err_tx++;
+#endif
+				isac_retransmit(isac);
+			}
+			if (val & 0x04)	/* MOS */
+				isac_mos_irq(isac);
+		}
+	}
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(mISDNisac_irq);
+
+static int
+isac_l1hw(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	struct mISDNdevice	*dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel		*dch = container_of(dev, struct dchannel, dev);
+	struct isac_hw		*isac = container_of(dch, struct isac_hw, dch);
+	int			ret = -EINVAL;
+	struct mISDNhead	*hh = mISDN_HEAD_P(skb);
+	u32			id;
+	u_long			flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(isac->hwlock, flags);
+		ret = dchannel_senddata(dch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			isac_fill_fifo(isac);
+			ret = 0;
+			spin_unlock_irqrestore(isac->hwlock, flags);
+			queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(isac->hwlock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		ret = l1_event(dch->l1, hh->prim);
+		break;
+	case PH_DEACTIVATE_REQ:
+		test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
+		ret = l1_event(dch->l1, hh->prim);
+		break;
+	}
+
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+isac_ctrl(struct isac_hw *isac, u32 cmd, u_long para)
+{
+	u8 tl = 0;
+	u_long flags;
+
+	switch (cmd) {
+	case HW_TESTLOOP:
+		spin_lock_irqsave(isac->hwlock, flags);
+		if (!(isac->type & IPAC_TYPE_ISACX)) {
+			/* TODO: implement for IPAC_TYPE_ISACX */
+			if (para & 1) /* B1 */
+				tl |= 0x0c;
+			else if (para & 2) /* B2 */
+				tl |= 0x3;
+			/* we only support IOM2 mode */
+			WriteISAC(isac, ISAC_SPCR, tl);
+			if (tl)
+				WriteISAC(isac, ISAC_ADF1, 0x8);
+			else
+				WriteISAC(isac, ISAC_ADF1, 0x0);
+		}
+		spin_unlock_irqrestore(isac->hwlock, flags);
+		break;
+	default:
+		pr_debug("%s: %s unknown command %x %lx\n", isac->name,
+			__func__, cmd, para);
+		return -1;
+	}
+	return 0;
+}
+
+static int
+isac_l1cmd(struct dchannel *dch, u32 cmd)
+{
+	struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
+	u_long flags;
+
+	pr_debug("%s: cmd(%x) state(%02x)\n", isac->name, cmd, isac->state);
+	switch (cmd) {
+	case INFO3_P8:
+		spin_lock_irqsave(isac->hwlock, flags);
+		ph_command(isac, ISAC_CMD_AR8);
+		spin_unlock_irqrestore(isac->hwlock, flags);
+		break;
+	case INFO3_P10:
+		spin_lock_irqsave(isac->hwlock, flags);
+		ph_command(isac, ISAC_CMD_AR10);
+		spin_unlock_irqrestore(isac->hwlock, flags);
+		break;
+	case HW_RESET_REQ:
+		spin_lock_irqsave(isac->hwlock, flags);
+		if ((isac->state == ISAC_IND_EI) ||
+		    (isac->state == ISAC_IND_DR) ||
+		    (isac->state == ISAC_IND_RS))
+			ph_command(isac, ISAC_CMD_TIM);
+		else
+			ph_command(isac, ISAC_CMD_RS);
+		spin_unlock_irqrestore(isac->hwlock, flags);
+		break;
+	case HW_DEACT_REQ:
+		skb_queue_purge(&dch->squeue);
+		if (dch->tx_skb) {
+			dev_kfree_skb(dch->tx_skb);
+			dch->tx_skb = NULL;
+		}
+		dch->tx_idx = 0;
+		if (dch->rx_skb) {
+			dev_kfree_skb(dch->rx_skb);
+			dch->rx_skb = NULL;
+		}
+		test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
+		if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
+			del_timer(&dch->timer);
+		break;
+	case HW_POWERUP_REQ:
+		spin_lock_irqsave(isac->hwlock, flags);
+		ph_command(isac, ISAC_CMD_TIM);
+		spin_unlock_irqrestore(isac->hwlock, flags);
+		break;
+	case PH_ACTIVATE_IND:
+		test_and_set_bit(FLG_ACTIVE, &dch->Flags);
+		_queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
+			GFP_ATOMIC);
+		break;
+	case PH_DEACTIVATE_IND:
+		test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
+		_queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
+			GFP_ATOMIC);
+		break;
+	default:
+		pr_debug("%s: %s unknown command %x\n", isac->name,
+			__func__, cmd);
+		return -1;
+	}
+	return 0;
+}
+
+static void
+isac_release(struct isac_hw *isac)
+{
+	if (isac->type & IPAC_TYPE_ISACX)
+		WriteISAC(isac, ISACX_MASK, 0xff);
+	else
+		WriteISAC(isac, ISAC_MASK, 0xff);
+	if (isac->dch.timer.function != NULL) {
+		del_timer(&isac->dch.timer);
+		isac->dch.timer.function = NULL;
+	}
+	kfree(isac->mon_rx);
+	isac->mon_rx = NULL;
+	kfree(isac->mon_tx);
+	isac->mon_tx = NULL;
+	if (isac->dch.l1)
+		l1_event(isac->dch.l1, CLOSE_CHANNEL);
+	mISDN_freedchannel(&isac->dch);
+}
+
+static void
+dbusy_timer_handler(struct isac_hw *isac)
+{
+	int rbch, star;
+	u_long flags;
+
+	if (test_bit(FLG_BUSY_TIMER, &isac->dch.Flags)) {
+		spin_lock_irqsave(isac->hwlock, flags);
+		rbch = ReadISAC(isac, ISAC_RBCH);
+		star = ReadISAC(isac, ISAC_STAR);
+		pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n",
+			isac->name, rbch, star);
+		if (rbch & ISAC_RBCH_XAC) /* D-Channel Busy */
+			test_and_set_bit(FLG_L1_BUSY, &isac->dch.Flags);
+		else {
+			/* discard frame; reset transceiver */
+			test_and_clear_bit(FLG_BUSY_TIMER, &isac->dch.Flags);
+			if (isac->dch.tx_idx)
+				isac->dch.tx_idx = 0;
+			else
+				pr_info("%s: ISAC D-Channel Busy no tx_idx\n",
+					isac->name);
+			/* Transmitter reset */
+			WriteISAC(isac, ISAC_CMDR, 0x01);
+		}
+		spin_unlock_irqrestore(isac->hwlock, flags);
+	}
+}
+
+static int
+open_dchannel(struct isac_hw *isac, struct channel_req *rq)
+{
+	pr_debug("%s: %s dev(%d) open from %p\n", isac->name, __func__,
+		isac->dch.dev.id, __builtin_return_address(1));
+	if (rq->protocol != ISDN_P_TE_S0)
+		return -EINVAL;
+	if (rq->adr.channel == 1)
+		/* E-Channel not supported */
+		return -EINVAL;
+	rq->ch = &isac->dch.dev.D;
+	rq->ch->protocol = rq->protocol;
+	if (isac->dch.state == 7)
+		_queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
+		    0, NULL, GFP_KERNEL);
+	return 0;
+}
+
+static const char *ISACVer[] =
+{"2086/2186 V1.1", "2085 B1", "2085 B2",
+ "2085 V2.3"};
+
+static int
+isac_init(struct isac_hw *isac)
+{
+	u8 val;
+	int err = 0;
+
+	if (!isac->dch.l1) {
+		err = create_l1(&isac->dch, isac_l1cmd);
+		if (err)
+			return err;
+	}
+	isac->mon_tx = NULL;
+	isac->mon_rx = NULL;
+	isac->dch.timer.function = (void *) dbusy_timer_handler;
+	isac->dch.timer.data = (long)isac;
+	init_timer(&isac->dch.timer);
+	isac->mocr = 0xaa;
+	if (isac->type & IPAC_TYPE_ISACX) {
+		/* Disable all IRQ */
+		WriteISAC(isac, ISACX_MASK, 0xff);
+		val = ReadISAC(isac, ISACX_STARD);
+		pr_debug("%s: ISACX STARD %x\n", isac->name, val);
+		val = ReadISAC(isac, ISACX_ISTAD);
+		pr_debug("%s: ISACX ISTAD %x\n", isac->name, val);
+		val = ReadISAC(isac, ISACX_ISTA);
+		pr_debug("%s: ISACX ISTA %x\n", isac->name, val);
+		/* clear LDD */
+		WriteISAC(isac, ISACX_TR_CONF0, 0x00);
+		/* enable transmitter */
+		WriteISAC(isac, ISACX_TR_CONF2, 0x00);
+		/* transparent mode 0, RAC, stop/go */
+		WriteISAC(isac, ISACX_MODED, 0xc9);
+		/* all HDLC IRQ unmasked */
+		val = ReadISAC(isac, ISACX_ID);
+		if (isac->dch.debug & DEBUG_HW)
+			pr_notice("%s: ISACX Design ID %x\n",
+				isac->name, val & 0x3f);
+		val = ReadISAC(isac, ISACX_CIR0);
+		pr_debug("%s: ISACX CIR0 %02X\n", isac->name, val);
+		isac->state = val >> 4;
+		isac_ph_state_change(isac);
+		ph_command(isac, ISAC_CMD_RS);
+		WriteISAC(isac, ISACX_MASK, IPACX__ON);
+		WriteISAC(isac, ISACX_MASKD, 0x00);
+	} else { /* old isac */
+		WriteISAC(isac, ISAC_MASK, 0xff);
+		val = ReadISAC(isac, ISAC_STAR);
+		pr_debug("%s: ISAC STAR %x\n", isac->name, val);
+		val = ReadISAC(isac, ISAC_MODE);
+		pr_debug("%s: ISAC MODE %x\n", isac->name, val);
+		val = ReadISAC(isac, ISAC_ADF2);
+		pr_debug("%s: ISAC ADF2 %x\n", isac->name, val);
+		val = ReadISAC(isac, ISAC_ISTA);
+		pr_debug("%s: ISAC ISTA %x\n", isac->name, val);
+		if (val & 0x01) {
+			val = ReadISAC(isac, ISAC_EXIR);
+			pr_debug("%s: ISAC EXIR %x\n", isac->name, val);
+		}
+		val = ReadISAC(isac, ISAC_RBCH);
+		if (isac->dch.debug & DEBUG_HW)
+			pr_notice("%s: ISAC version (%x): %s\n", isac->name,
+				val, ISACVer[(val >> 5) & 3]);
+		isac->type |= ((val >> 5) & 3);
+		if (!isac->adf2)
+			isac->adf2 = 0x80;
+		if (!(isac->adf2 & 0x80)) { /* only IOM 2 Mode */
+			pr_info("%s: only support IOM2 mode but adf2=%02x\n",
+				isac->name, isac->adf2);
+			isac_release(isac);
+			return -EINVAL;
+		}
+		WriteISAC(isac, ISAC_ADF2, isac->adf2);
+		WriteISAC(isac, ISAC_SQXR, 0x2f);
+		WriteISAC(isac, ISAC_SPCR, 0x00);
+		WriteISAC(isac, ISAC_STCR, 0x70);
+		WriteISAC(isac, ISAC_MODE, 0xc9);
+		WriteISAC(isac, ISAC_TIMR, 0x00);
+		WriteISAC(isac, ISAC_ADF1, 0x00);
+		val = ReadISAC(isac, ISAC_CIR0);
+		pr_debug("%s: ISAC CIR0 %x\n", isac->name, val);
+		isac->state = (val >> 2) & 0xf;
+		isac_ph_state_change(isac);
+		ph_command(isac, ISAC_CMD_RS);
+		WriteISAC(isac, ISAC_MASK, 0);
+	}
+	return err;
+}
+
+int
+mISDNisac_init(struct isac_hw *isac, void *hw)
+{
+	mISDN_initdchannel(&isac->dch, MAX_DFRAME_LEN_L1, isac_ph_state_bh);
+	isac->dch.hw = hw;
+	isac->dch.dev.D.send = isac_l1hw;
+	isac->init = isac_init;
+	isac->release = isac_release;
+	isac->ctrl = isac_ctrl;
+	isac->open = open_dchannel;
+	isac->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
+	isac->dch.dev.nrbchan = 2;
+	return 0;
+}
+EXPORT_SYMBOL(mISDNisac_init);
+
+static void
+waitforCEC(struct hscx_hw *hx)
+{
+	u8 starb, to = 50;
+
+	while (to) {
+		starb = ReadHSCX(hx, IPAC_STARB);
+		if (!(starb & 0x04))
+			break;
+		udelay(1);
+		to--;
+	}
+	if (to < 50)
+		pr_debug("%s: B%1d CEC %d us\n", hx->ip->name, hx->bch.nr,
+			50 - to);
+	if (!to)
+		pr_info("%s: B%1d CEC timeout\n", hx->ip->name, hx->bch.nr);
+}
+
+
+static void
+waitforXFW(struct hscx_hw *hx)
+{
+	u8 starb, to = 50;
+
+	while (to) {
+		starb = ReadHSCX(hx, IPAC_STARB);
+		if ((starb & 0x44) == 0x40)
+			break;
+		udelay(1);
+		to--;
+	}
+	if (to < 50)
+		pr_debug("%s: B%1d XFW %d us\n", hx->ip->name, hx->bch.nr,
+			50 - to);
+	if (!to)
+		pr_info("%s: B%1d XFW timeout\n", hx->ip->name, hx->bch.nr);
+}
+
+static void
+hscx_cmdr(struct hscx_hw *hx, u8 cmd)
+{
+	if (hx->ip->type & IPAC_TYPE_IPACX)
+		WriteHSCX(hx, IPACX_CMDRB, cmd);
+	else {
+		waitforCEC(hx);
+		WriteHSCX(hx, IPAC_CMDRB, cmd);
+	}
+}
+
+static void
+hscx_empty_fifo(struct hscx_hw *hscx, u8 count)
+{
+	u8 *p;
+
+	pr_debug("%s: B%1d %d\n", hscx->ip->name, hscx->bch.nr, count);
+	if (!hscx->bch.rx_skb) {
+		hscx->bch.rx_skb = mI_alloc_skb(hscx->bch.maxlen, GFP_ATOMIC);
+		if (!hscx->bch.rx_skb) {
+			pr_info("%s: B receive out of memory\n",
+				hscx->ip->name);
+			hscx_cmdr(hscx, 0x80); /* RMC */
+			return;
+		}
+	}
+	if ((hscx->bch.rx_skb->len + count) > hscx->bch.maxlen) {
+		pr_debug("%s: overrun %d\n", hscx->ip->name,
+			hscx->bch.rx_skb->len + count);
+		skb_trim(hscx->bch.rx_skb, 0);
+		hscx_cmdr(hscx, 0x80); /* RMC */
+		return;
+	}
+	p = skb_put(hscx->bch.rx_skb, count);
+
+	if (hscx->ip->type & IPAC_TYPE_IPACX)
+		hscx->ip->read_fifo(hscx->ip->hw,
+			hscx->off + IPACX_RFIFOB, p, count);
+	else
+		hscx->ip->read_fifo(hscx->ip->hw,
+			hscx->off, p, count);
+
+	hscx_cmdr(hscx, 0x80); /* RMC */
+
+	if (hscx->bch.debug & DEBUG_HW_BFIFO) {
+		snprintf(hscx->log, 64, "B%1d-recv %s %d ",
+			hscx->bch.nr, hscx->ip->name, count);
+		print_hex_dump_bytes(hscx->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+}
+
+static void
+hscx_fill_fifo(struct hscx_hw *hscx)
+{
+	int count, more;
+	u8 *p;
+
+	if (!hscx->bch.tx_skb)
+		return;
+	count = hscx->bch.tx_skb->len - hscx->bch.tx_idx;
+	if (count <= 0)
+		return;
+	p = hscx->bch.tx_skb->data + hscx->bch.tx_idx;
+
+	more = test_bit(FLG_TRANSPARENT, &hscx->bch.Flags) ? 1 : 0;
+	if (count > hscx->fifo_size) {
+		count = hscx->fifo_size;
+		more = 1;
+	}
+	pr_debug("%s: B%1d %d/%d/%d\n", hscx->ip->name, hscx->bch.nr, count,
+		hscx->bch.tx_idx, hscx->bch.tx_skb->len);
+	hscx->bch.tx_idx += count;
+
+	if (hscx->ip->type & IPAC_TYPE_IPACX)
+		hscx->ip->write_fifo(hscx->ip->hw,
+			hscx->off + IPACX_XFIFOB, p, count);
+	else {
+		waitforXFW(hscx);
+		hscx->ip->write_fifo(hscx->ip->hw,
+			hscx->off, p, count);
+	}
+	hscx_cmdr(hscx, more ? 0x08 : 0x0a);
+
+	if (hscx->bch.debug & DEBUG_HW_BFIFO) {
+		snprintf(hscx->log, 64, "B%1d-send %s %d ",
+			hscx->bch.nr, hscx->ip->name, count);
+		print_hex_dump_bytes(hscx->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+}
+
+static void
+hscx_xpr(struct hscx_hw *hx)
+{
+	if (hx->bch.tx_skb && hx->bch.tx_idx < hx->bch.tx_skb->len)
+		hscx_fill_fifo(hx);
+	else {
+		if (hx->bch.tx_skb) {
+			/* send confirm, on trans, free on hdlc. */
+			if (test_bit(FLG_TRANSPARENT, &hx->bch.Flags))
+				confirm_Bsend(&hx->bch);
+			dev_kfree_skb(hx->bch.tx_skb);
+		}
+		if (get_next_bframe(&hx->bch))
+			hscx_fill_fifo(hx);
+	}
+}
+
+static void
+ipac_rme(struct hscx_hw *hx)
+{
+	int count;
+	u8 rstab;
+
+	if (hx->ip->type & IPAC_TYPE_IPACX)
+		rstab = ReadHSCX(hx, IPACX_RSTAB);
+	else
+		rstab = ReadHSCX(hx, IPAC_RSTAB);
+	pr_debug("%s: B%1d RSTAB %02x\n", hx->ip->name, hx->bch.nr, rstab);
+	if ((rstab & 0xf0) != 0xa0) {
+		/* !(VFR && !RDO && CRC && !RAB) */
+		if (!(rstab & 0x80)) {
+			if (hx->bch.debug & DEBUG_HW_BCHANNEL)
+				pr_notice("%s: B%1d invalid frame\n",
+					hx->ip->name, hx->bch.nr);
+		}
+		if (rstab & 0x40) {
+			if (hx->bch.debug & DEBUG_HW_BCHANNEL)
+				pr_notice("%s: B%1d RDO proto=%x\n",
+					hx->ip->name, hx->bch.nr,
+					hx->bch.state);
+		}
+		if (!(rstab & 0x20)) {
+			if (hx->bch.debug & DEBUG_HW_BCHANNEL)
+				pr_notice("%s: B%1d CRC error\n",
+					hx->ip->name, hx->bch.nr);
+		}
+		hscx_cmdr(hx, 0x80); /* Do RMC */
+		return;
+	}
+	if (hx->ip->type & IPAC_TYPE_IPACX)
+		count = ReadHSCX(hx, IPACX_RBCLB);
+	else
+		count = ReadHSCX(hx, IPAC_RBCLB);
+	count &= (hx->fifo_size - 1);
+	if (count == 0)
+		count = hx->fifo_size;
+	hscx_empty_fifo(hx, count);
+	if (!hx->bch.rx_skb)
+		return;
+	if (hx->bch.rx_skb->len < 2) {
+		pr_debug("%s: B%1d frame to short %d\n",
+			hx->ip->name, hx->bch.nr, hx->bch.rx_skb->len);
+		skb_trim(hx->bch.rx_skb, 0);
+	} else {
+		skb_trim(hx->bch.rx_skb, hx->bch.rx_skb->len - 1);
+		recv_Bchannel(&hx->bch, 0);
+	}
+}
+
+static void
+ipac_irq(struct hscx_hw *hx, u8 ista)
+{
+	u8 istab, m, exirb = 0;
+
+	if (hx->ip->type & IPAC_TYPE_IPACX)
+		istab = ReadHSCX(hx, IPACX_ISTAB);
+	else if (hx->ip->type & IPAC_TYPE_IPAC) {
+		istab = ReadHSCX(hx, IPAC_ISTAB);
+		m = (hx->bch.nr & 1) ? IPAC__EXA : IPAC__EXB;
+		if (m & ista) {
+			exirb = ReadHSCX(hx, IPAC_EXIRB);
+			pr_debug("%s: B%1d EXIRB %02x\n", hx->ip->name,
+				hx->bch.nr, exirb);
+		}
+	} else if (hx->bch.nr & 2) { /* HSCX B */
+		if (ista & (HSCX__EXA | HSCX__ICA))
+			ipac_irq(&hx->ip->hscx[0], ista);
+		if (ista & HSCX__EXB) {
+			exirb = ReadHSCX(hx, IPAC_EXIRB);
+			pr_debug("%s: B%1d EXIRB %02x\n", hx->ip->name,
+				hx->bch.nr, exirb);
+		}
+		istab = ista & 0xF8;
+	} else { /* HSCX A */
+		istab = ReadHSCX(hx, IPAC_ISTAB);
+		if (ista & HSCX__EXA) {
+			exirb = ReadHSCX(hx, IPAC_EXIRB);
+			pr_debug("%s: B%1d EXIRB %02x\n", hx->ip->name,
+				hx->bch.nr, exirb);
+		}
+		istab = istab & 0xF8;
+	}
+	if (exirb & IPAC_B_XDU)
+		istab |= IPACX_B_XDU;
+	if (exirb & IPAC_B_RFO)
+		istab |= IPACX_B_RFO;
+	pr_debug("%s: B%1d ISTAB %02x\n", hx->ip->name, hx->bch.nr, istab);
+
+	if (!test_bit(FLG_ACTIVE, &hx->bch.Flags))
+		return;
+
+	if (istab & IPACX_B_RME)
+		ipac_rme(hx);
+
+	if (istab & IPACX_B_RPF) {
+		hscx_empty_fifo(hx, hx->fifo_size);
+		if (test_bit(FLG_TRANSPARENT, &hx->bch.Flags)) {
+			/* receive transparent audio data */
+			if (hx->bch.rx_skb)
+				recv_Bchannel(&hx->bch, 0);
+		}
+	}
+
+	if (istab & IPACX_B_RFO) {
+		pr_debug("%s: B%1d RFO error\n", hx->ip->name, hx->bch.nr);
+		hscx_cmdr(hx, 0x40);	/* RRES */
+	}
+
+	if (istab & IPACX_B_XPR)
+		hscx_xpr(hx);
+
+	if (istab & IPACX_B_XDU) {
+		if (test_bit(FLG_TRANSPARENT, &hx->bch.Flags)) {
+			hscx_fill_fifo(hx);
+			return;
+		}
+		pr_debug("%s: B%1d XDU error at len %d\n", hx->ip->name,
+			hx->bch.nr, hx->bch.tx_idx);
+		hx->bch.tx_idx = 0;
+		hscx_cmdr(hx, 0x01);	/* XRES */
+	}
+}
+
+irqreturn_t
+mISDNipac_irq(struct ipac_hw *ipac, int maxloop)
+{
+	int cnt = maxloop + 1;
+	u8 ista, istad;
+	struct isac_hw  *isac = &ipac->isac;
+
+	if (ipac->type & IPAC_TYPE_IPACX) {
+		ista = ReadIPAC(ipac, ISACX_ISTA);
+		while (ista && cnt--) {
+			pr_debug("%s: ISTA %02x\n", ipac->name, ista);
+			if (ista & IPACX__ICA)
+				ipac_irq(&ipac->hscx[0], ista);
+			if (ista & IPACX__ICB)
+				ipac_irq(&ipac->hscx[1], ista);
+			if (ista & (ISACX__ICD | ISACX__CIC))
+				mISDNisac_irq(&ipac->isac, ista);
+			ista = ReadIPAC(ipac, ISACX_ISTA);
+		}
+	} else if (ipac->type & IPAC_TYPE_IPAC) {
+		ista = ReadIPAC(ipac, IPAC_ISTA);
+		while (ista && cnt--) {
+			pr_debug("%s: ISTA %02x\n", ipac->name, ista);
+			if (ista & (IPAC__ICD | IPAC__EXD)) {
+				istad = ReadISAC(isac, ISAC_ISTA);
+				pr_debug("%s: ISTAD %02x\n", ipac->name, istad);
+				if (istad & IPAC_D_TIN2)
+					pr_debug("%s TIN2 irq\n", ipac->name);
+				if (ista & IPAC__EXD)
+					istad |= 1; /* ISAC EXI */
+				mISDNisac_irq(isac, istad);
+			}
+			if (ista & (IPAC__ICA | IPAC__EXA))
+				ipac_irq(&ipac->hscx[0], ista);
+			if (ista & (IPAC__ICB | IPAC__EXB))
+				ipac_irq(&ipac->hscx[1], ista);
+			ista = ReadIPAC(ipac, IPAC_ISTA);
+		}
+	} else if (ipac->type & IPAC_TYPE_HSCX) {
+		while (cnt) {
+			ista = ReadIPAC(ipac, IPAC_ISTAB + ipac->hscx[1].off);
+			pr_debug("%s: B2 ISTA %02x\n", ipac->name, ista);
+			if (ista)
+				ipac_irq(&ipac->hscx[1], ista);
+			istad = ReadISAC(isac, ISAC_ISTA);
+			pr_debug("%s: ISTAD %02x\n", ipac->name, istad);
+			if (istad)
+				mISDNisac_irq(isac, istad);
+			if (0 == (ista | istad))
+				break;
+			cnt--;
+		}
+	}
+	if (cnt > maxloop) /* only for ISAC/HSCX without PCI IRQ test */
+		return IRQ_NONE;
+	if (cnt < maxloop)
+		pr_debug("%s: %d irqloops cpu%d\n", ipac->name,
+			maxloop - cnt, smp_processor_id());
+	if (maxloop && !cnt)
+		pr_notice("%s: %d IRQ LOOP cpu%d\n", ipac->name,
+			maxloop, smp_processor_id());
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(mISDNipac_irq);
+
+static int
+hscx_mode(struct hscx_hw *hscx, u32 bprotocol)
+{
+	pr_debug("%s: HSCX %c protocol %x-->%x ch %d\n", hscx->ip->name,
+		'@' + hscx->bch.nr, hscx->bch.state, bprotocol, hscx->bch.nr);
+	if (hscx->ip->type & IPAC_TYPE_IPACX) {
+		if (hscx->bch.nr & 1) { /* B1 and ICA */
+			WriteIPAC(hscx->ip, ISACX_BCHA_TSDP_BC1, 0x80);
+			WriteIPAC(hscx->ip, ISACX_BCHA_CR, 0x88);
+		} else { /* B2 and ICB */
+			WriteIPAC(hscx->ip, ISACX_BCHB_TSDP_BC1, 0x81);
+			WriteIPAC(hscx->ip, ISACX_BCHB_CR, 0x88);
+		}
+		switch (bprotocol) {
+		case ISDN_P_NONE: /* init */
+			WriteHSCX(hscx, IPACX_MODEB, 0xC0);	/* rec off */
+			WriteHSCX(hscx, IPACX_EXMB,  0x30);	/* std adj. */
+			WriteHSCX(hscx, IPACX_MASKB, 0xFF);	/* ints off */
+			hscx_cmdr(hscx, 0x41);
+			test_and_clear_bit(FLG_HDLC, &hscx->bch.Flags);
+			test_and_clear_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
+			break;
+		case ISDN_P_B_RAW:
+			WriteHSCX(hscx, IPACX_MODEB, 0x88);	/* ex trans */
+			WriteHSCX(hscx, IPACX_EXMB,  0x00);	/* trans */
+			hscx_cmdr(hscx, 0x41);
+			WriteHSCX(hscx, IPACX_MASKB, IPACX_B_ON);
+			test_and_set_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
+			break;
+		case ISDN_P_B_HDLC:
+			WriteHSCX(hscx, IPACX_MODEB, 0xC0);	/* trans */
+			WriteHSCX(hscx, IPACX_EXMB,  0x00);	/* hdlc,crc */
+			hscx_cmdr(hscx, 0x41);
+			WriteHSCX(hscx, IPACX_MASKB, IPACX_B_ON);
+			test_and_set_bit(FLG_HDLC, &hscx->bch.Flags);
+			break;
+		default:
+			pr_info("%s: protocol not known %x\n", hscx->ip->name,
+				bprotocol);
+			return -ENOPROTOOPT;
+		}
+	} else if (hscx->ip->type & IPAC_TYPE_IPAC) { /* IPAC */
+		WriteHSCX(hscx, IPAC_CCR1, 0x82);
+		WriteHSCX(hscx, IPAC_CCR2, 0x30);
+		WriteHSCX(hscx, IPAC_XCCR, 0x07);
+		WriteHSCX(hscx, IPAC_RCCR, 0x07);
+		WriteHSCX(hscx, IPAC_TSAX, hscx->slot);
+		WriteHSCX(hscx, IPAC_TSAR, hscx->slot);
+		switch (bprotocol) {
+		case ISDN_P_NONE:
+			WriteHSCX(hscx, IPAC_TSAX, 0x1F);
+			WriteHSCX(hscx, IPAC_TSAR, 0x1F);
+			WriteHSCX(hscx, IPAC_MODEB, 0x84);
+			WriteHSCX(hscx, IPAC_CCR1, 0x82);
+			WriteHSCX(hscx, IPAC_MASKB, 0xFF);	/* ints off */
+			test_and_clear_bit(FLG_HDLC, &hscx->bch.Flags);
+			test_and_clear_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
+			break;
+		case ISDN_P_B_RAW:
+			WriteHSCX(hscx, IPAC_MODEB, 0xe4);	/* ex trans */
+			WriteHSCX(hscx, IPAC_CCR1, 0x82);
+			hscx_cmdr(hscx, 0x41);
+			WriteHSCX(hscx, IPAC_MASKB, 0);
+			test_and_set_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
+			break;
+		case ISDN_P_B_HDLC:
+			WriteHSCX(hscx, IPAC_MODEB, 0x8c);
+			WriteHSCX(hscx, IPAC_CCR1, 0x8a);
+			hscx_cmdr(hscx, 0x41);
+			WriteHSCX(hscx, IPAC_MASKB, 0);
+			test_and_set_bit(FLG_HDLC, &hscx->bch.Flags);
+			break;
+		default:
+			pr_info("%s: protocol not known %x\n", hscx->ip->name,
+				bprotocol);
+			return -ENOPROTOOPT;
+		}
+	} else if (hscx->ip->type & IPAC_TYPE_HSCX) { /* HSCX */
+		WriteHSCX(hscx, IPAC_CCR1, 0x85);
+		WriteHSCX(hscx, IPAC_CCR2, 0x30);
+		WriteHSCX(hscx, IPAC_XCCR, 0x07);
+		WriteHSCX(hscx, IPAC_RCCR, 0x07);
+		WriteHSCX(hscx, IPAC_TSAX, hscx->slot);
+		WriteHSCX(hscx, IPAC_TSAR, hscx->slot);
+		switch (bprotocol) {
+		case ISDN_P_NONE:
+			WriteHSCX(hscx, IPAC_TSAX, 0x1F);
+			WriteHSCX(hscx, IPAC_TSAR, 0x1F);
+			WriteHSCX(hscx, IPAC_MODEB, 0x84);
+			WriteHSCX(hscx, IPAC_CCR1, 0x85);
+			WriteHSCX(hscx, IPAC_MASKB, 0xFF);	/* ints off */
+			test_and_clear_bit(FLG_HDLC, &hscx->bch.Flags);
+			test_and_clear_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
+			break;
+		case ISDN_P_B_RAW:
+			WriteHSCX(hscx, IPAC_MODEB, 0xe4);	/* ex trans */
+			WriteHSCX(hscx, IPAC_CCR1, 0x85);
+			hscx_cmdr(hscx, 0x41);
+			WriteHSCX(hscx, IPAC_MASKB, 0);
+			test_and_set_bit(FLG_TRANSPARENT, &hscx->bch.Flags);
+			break;
+		case ISDN_P_B_HDLC:
+			WriteHSCX(hscx, IPAC_MODEB, 0x8c);
+			WriteHSCX(hscx, IPAC_CCR1, 0x8d);
+			hscx_cmdr(hscx, 0x41);
+			WriteHSCX(hscx, IPAC_MASKB, 0);
+			test_and_set_bit(FLG_HDLC, &hscx->bch.Flags);
+			break;
+		default:
+			pr_info("%s: protocol not known %x\n", hscx->ip->name,
+				bprotocol);
+			return -ENOPROTOOPT;
+		}
+	} else
+		return -EINVAL;
+	hscx->bch.state = bprotocol;
+	return 0;
+}
+
+static int
+hscx_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct hscx_hw	*hx = container_of(bch, struct hscx_hw, bch);
+	int ret = -EINVAL;
+	struct mISDNhead *hh = mISDN_HEAD_P(skb);
+	u32 id;
+	u_long flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(hx->ip->hwlock, flags);
+		ret = bchannel_senddata(bch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			ret = 0;
+			hscx_fill_fifo(hx);
+			spin_unlock_irqrestore(hx->ip->hwlock, flags);
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(hx->ip->hwlock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		spin_lock_irqsave(hx->ip->hwlock, flags);
+		if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
+			ret = hscx_mode(hx, ch->protocol);
+		else
+			ret = 0;
+		spin_unlock_irqrestore(hx->ip->hwlock, flags);
+		if (!ret)
+			_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+				NULL, GFP_KERNEL);
+		break;
+	case PH_DEACTIVATE_REQ:
+		spin_lock_irqsave(hx->ip->hwlock, flags);
+		mISDN_clear_bchannel(bch);
+		hscx_mode(hx, ISDN_P_NONE);
+		spin_unlock_irqrestore(hx->ip->hwlock, flags);
+		_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
+			NULL, GFP_KERNEL);
+		ret = 0;
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x,%x)\n",
+			hx->ip->name, __func__, hh->prim, hh->id);
+		ret = -EINVAL;
+	}
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	/* Nothing implemented yet */
+	case MISDN_CTRL_FILL_EMPTY:
+	default:
+		pr_info("%s: unknown Op %x\n", __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+hscx_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct hscx_hw	*hx = container_of(bch, struct hscx_hw, bch);
+	int ret = -EINVAL;
+	u_long flags;
+
+	pr_debug("%s: %s cmd:%x %p\n", hx->ip->name, __func__, cmd, arg);
+	switch (cmd) {
+	case CLOSE_CHANNEL:
+		test_and_clear_bit(FLG_OPEN, &bch->Flags);
+		if (test_bit(FLG_ACTIVE, &bch->Flags)) {
+			spin_lock_irqsave(hx->ip->hwlock, flags);
+			mISDN_freebchannel(bch);
+			hscx_mode(hx, ISDN_P_NONE);
+			spin_unlock_irqrestore(hx->ip->hwlock, flags);
+		} else {
+			skb_queue_purge(&bch->rqueue);
+			bch->rcount = 0;
+		}
+		ch->protocol = ISDN_P_NONE;
+		ch->peer = NULL;
+		module_put(hx->ip->owner);
+		ret = 0;
+		break;
+	case CONTROL_CHANNEL:
+		ret = channel_bctrl(bch, arg);
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x)\n",
+			hx->ip->name, __func__, cmd);
+	}
+	return ret;
+}
+
+static void
+free_ipac(struct ipac_hw *ipac)
+{
+	isac_release(&ipac->isac);
+}
+
+static const char *HSCXVer[] =
+{"A1", "?1", "A2", "?3", "A3", "V2.1", "?6", "?7",
+ "?8", "?9", "?10", "?11", "?12", "?13", "?14", "???"};
+
+
+
+static void
+hscx_init(struct hscx_hw *hx)
+{
+	u8 val;
+
+	WriteHSCX(hx, IPAC_RAH2, 0xFF);
+	WriteHSCX(hx, IPAC_XBCH, 0x00);
+	WriteHSCX(hx, IPAC_RLCR, 0x00);
+
+	if (hx->ip->type & IPAC_TYPE_HSCX) {
+		WriteHSCX(hx, IPAC_CCR1, 0x85);
+		val = ReadHSCX(hx, HSCX_VSTR);
+		pr_debug("%s: HSCX VSTR %02x\n", hx->ip->name, val);
+		if (hx->bch.debug & DEBUG_HW)
+			pr_notice("%s: HSCX version %s\n", hx->ip->name,
+				HSCXVer[val & 0x0f]);
+	} else
+		WriteHSCX(hx, IPAC_CCR1, 0x82);
+	WriteHSCX(hx, IPAC_CCR2, 0x30);
+	WriteHSCX(hx, IPAC_XCCR, 0x07);
+	WriteHSCX(hx, IPAC_RCCR, 0x07);
+}
+
+static int
+ipac_init(struct ipac_hw *ipac)
+{
+	u8 val;
+
+	if (ipac->type & IPAC_TYPE_HSCX) {
+		hscx_init(&ipac->hscx[0]);
+		hscx_init(&ipac->hscx[1]);
+		val = ReadIPAC(ipac, IPAC_ID);
+	} else if (ipac->type & IPAC_TYPE_IPAC) {
+		hscx_init(&ipac->hscx[0]);
+		hscx_init(&ipac->hscx[1]);
+		WriteIPAC(ipac, IPAC_MASK, IPAC__ON);
+		val = ReadIPAC(ipac, IPAC_CONF);
+		/* conf is default 0, but can be overwritten by card setup */
+		pr_debug("%s: IPAC CONF %02x/%02x\n", ipac->name,
+			val, ipac->conf);
+		WriteIPAC(ipac, IPAC_CONF, ipac->conf);
+		val = ReadIPAC(ipac, IPAC_ID);
+		if (ipac->hscx[0].bch.debug & DEBUG_HW)
+			pr_notice("%s: IPAC Design ID %02x\n", ipac->name, val);
+	}
+	/* nothing special for IPACX to do here */
+	return isac_init(&ipac->isac);
+}
+
+static int
+open_bchannel(struct ipac_hw *ipac, struct channel_req *rq)
+{
+	struct bchannel		*bch;
+
+	if (rq->adr.channel > 2)
+		return -EINVAL;
+	if (rq->protocol == ISDN_P_NONE)
+		return -EINVAL;
+	bch = &ipac->hscx[rq->adr.channel - 1].bch;
+	if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+		return -EBUSY; /* b-channel can be only open once */
+	test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
+	bch->ch.protocol = rq->protocol;
+	rq->ch = &bch->ch;
+	return 0;
+}
+
+static int
+channel_ctrl(struct ipac_hw *ipac, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = MISDN_CTRL_LOOP;
+		break;
+	case MISDN_CTRL_LOOP:
+		/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
+		if (cq->channel < 0 || cq->channel > 3) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = ipac->ctrl(ipac, HW_TESTLOOP, cq->channel);
+		break;
+	default:
+		pr_info("%s: unknown CTRL OP %x\n", ipac->name, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+ipac_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel *dch = container_of(dev, struct dchannel, dev);
+	struct isac_hw *isac = container_of(dch, struct isac_hw, dch);
+	struct ipac_hw *ipac = container_of(isac, struct ipac_hw, isac);
+	struct channel_req *rq;
+	int err = 0;
+
+	pr_debug("%s: DCTRL: %x %p\n", ipac->name, cmd, arg);
+	switch (cmd) {
+	case OPEN_CHANNEL:
+		rq = arg;
+		if (rq->protocol == ISDN_P_TE_S0)
+			err = open_dchannel(isac, rq);
+		else
+			err = open_bchannel(ipac, rq);
+		if (err)
+			break;
+		if (!try_module_get(ipac->owner))
+			pr_info("%s: cannot get module\n", ipac->name);
+		break;
+	case CLOSE_CHANNEL:
+		pr_debug("%s: dev(%d) close from %p\n", ipac->name,
+			dch->dev.id, __builtin_return_address(0));
+		module_put(ipac->owner);
+		break;
+	case CONTROL_CHANNEL:
+		err = channel_ctrl(ipac, arg);
+		break;
+	default:
+		pr_debug("%s: unknown DCTRL command %x\n", ipac->name, cmd);
+		return -EINVAL;
+	}
+	return err;
+}
+
+u32
+mISDNipac_init(struct ipac_hw *ipac, void *hw)
+{
+	u32 ret;
+	u8 i;
+
+	ipac->hw = hw;
+	if (ipac->isac.dch.debug & DEBUG_HW)
+		pr_notice("%s: ipac type %x\n", ipac->name, ipac->type);
+	if (ipac->type & IPAC_TYPE_HSCX) {
+		ipac->isac.type = IPAC_TYPE_ISAC;
+		ipac->hscx[0].off = 0;
+		ipac->hscx[1].off = 0x40;
+		ipac->hscx[0].fifo_size = 32;
+		ipac->hscx[1].fifo_size = 32;
+	} else if (ipac->type & IPAC_TYPE_IPAC) {
+		ipac->isac.type = IPAC_TYPE_IPAC | IPAC_TYPE_ISAC;
+		ipac->hscx[0].off = 0;
+		ipac->hscx[1].off = 0x40;
+		ipac->hscx[0].fifo_size = 64;
+		ipac->hscx[1].fifo_size = 64;
+	} else if (ipac->type & IPAC_TYPE_IPACX) {
+		ipac->isac.type = IPAC_TYPE_IPACX | IPAC_TYPE_ISACX;
+		ipac->hscx[0].off = IPACX_OFF_ICA;
+		ipac->hscx[1].off = IPACX_OFF_ICB;
+		ipac->hscx[0].fifo_size = 64;
+		ipac->hscx[1].fifo_size = 64;
+	} else
+		return 0;
+
+	mISDNisac_init(&ipac->isac, hw);
+
+	ipac->isac.dch.dev.D.ctrl = ipac_dctrl;
+
+	for (i = 0; i < 2; i++) {
+		ipac->hscx[i].bch.nr = i + 1;
+		set_channelmap(i + 1, ipac->isac.dch.dev.channelmap);
+		list_add(&ipac->hscx[i].bch.ch.list,
+			&ipac->isac.dch.dev.bchannels);
+		mISDN_initbchannel(&ipac->hscx[i].bch, MAX_DATA_MEM);
+		ipac->hscx[i].bch.ch.nr = i + 1;
+		ipac->hscx[i].bch.ch.send = &hscx_l2l1;
+		ipac->hscx[i].bch.ch.ctrl = hscx_bctrl;
+		ipac->hscx[i].bch.hw = hw;
+		ipac->hscx[i].ip = ipac;
+		/* default values for IOM time slots
+		 * can be overwriten by card */
+		ipac->hscx[i].slot = (i == 0) ? 0x2f : 0x03;
+	}
+
+	ipac->init = ipac_init;
+	ipac->release = free_ipac;
+
+	ret =	(1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
+	return ret;
+}
+EXPORT_SYMBOL(mISDNipac_init);
+
+static int __init
+isac_mod_init(void)
+{
+	pr_notice("mISDNipac module version %s\n", ISAC_REV);
+	return 0;
+}
+
+static void __exit
+isac_mod_cleanup(void)
+{
+	pr_notice("mISDNipac module unloaded\n");
+}
+module_init(isac_mod_init);
+module_exit(isac_mod_cleanup);

drivers/isdn/hardware/mISDN/mISDNisar.c

@@ -0,0 +1,1726 @@
+/*
+ * mISDNisar.c   ISAR (Siemens PSB 7110) specific functions
+ *
+ * Author Karsten Keil (keil@isdn4linux.de)
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/* define this to enable static debug messages, if you kernel supports
+ * dynamic debugging, you should use debugfs for this
+ */
+/* #define DEBUG */
+
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#include <linux/mISDNhw.h>
+#include "isar.h"
+
+#define ISAR_REV	"2.1"
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(ISAR_REV);
+
+#define DEBUG_HW_FIRMWARE_FIFO	0x10000
+
+static const u8 faxmodulation_s[] = "3,24,48,72,73,74,96,97,98,121,122,145,146";
+static const u8 faxmodulation[] = {3, 24, 48, 72, 73, 74, 96, 97, 98, 121,
+					122, 145, 146};
+#define FAXMODCNT 13
+
+static void isar_setup(struct isar_hw *);
+
+static inline int
+waitforHIA(struct isar_hw *isar, int timeout)
+{
+	int t = timeout;
+	u8 val = isar->read_reg(isar->hw, ISAR_HIA);
+
+	while ((val & 1) && t) {
+		udelay(1);
+		t--;
+		val = isar->read_reg(isar->hw, ISAR_HIA);
+	}
+	pr_debug("%s: HIA after %dus\n", isar->name, timeout - t);
+	return timeout;
+}
+
+/*
+ * send msg to ISAR mailbox
+ * if msg is NULL use isar->buf
+ */
+static int
+send_mbox(struct isar_hw *isar, u8 his, u8 creg, u8 len, u8 *msg)
+{
+	if (!waitforHIA(isar, 1000))
+		return 0;
+	pr_debug("send_mbox(%02x,%02x,%d)\n", his, creg, len);
+	isar->write_reg(isar->hw, ISAR_CTRL_H, creg);
+	isar->write_reg(isar->hw, ISAR_CTRL_L, len);
+	isar->write_reg(isar->hw, ISAR_WADR, 0);
+	if (!msg)
+		msg = isar->buf;
+	if (msg && len) {
+		isar->write_fifo(isar->hw, ISAR_MBOX, msg, len);
+		if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
+			int l = 0;
+
+			while (l < (int)len) {
+				hex_dump_to_buffer(msg + l, len - l, 32, 1,
+					isar->log, 256, 1);
+				pr_debug("%s: %s %02x: %s\n", isar->name,
+					__func__, l, isar->log);
+				l += 32;
+			}
+		}
+	}
+	isar->write_reg(isar->hw, ISAR_HIS, his);
+	waitforHIA(isar, 1000);
+	return 1;
+}
+
+/*
+ * receive message from ISAR mailbox
+ * if msg is NULL use isar->buf
+ */
+static void
+rcv_mbox(struct isar_hw *isar, u8 *msg)
+{
+	if (!msg)
+		msg = isar->buf;
+	isar->write_reg(isar->hw, ISAR_RADR, 0);
+	if (msg && isar->clsb) {
+		isar->read_fifo(isar->hw, ISAR_MBOX, msg, isar->clsb);
+		if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
+			int l = 0;
+
+			while (l < (int)isar->clsb) {
+				hex_dump_to_buffer(msg + l, isar->clsb - l, 32,
+					1, isar->log, 256, 1);
+				pr_debug("%s: %s %02x: %s\n", isar->name,
+					__func__, l, isar->log);
+				l += 32;
+			}
+		}
+	}
+	isar->write_reg(isar->hw, ISAR_IIA, 0);
+}
+
+static inline void
+get_irq_infos(struct isar_hw *isar)
+{
+	isar->iis = isar->read_reg(isar->hw, ISAR_IIS);
+	isar->cmsb = isar->read_reg(isar->hw, ISAR_CTRL_H);
+	isar->clsb = isar->read_reg(isar->hw, ISAR_CTRL_L);
+	pr_debug("%s: rcv_mbox(%02x,%02x,%d)\n", isar->name,
+		isar->iis, isar->cmsb, isar->clsb);
+}
+
+/*
+ * poll answer message from ISAR mailbox
+ * should be used only with ISAR IRQs disabled before DSP was started
+ *
+ */
+static int
+poll_mbox(struct isar_hw *isar, int maxdelay)
+{
+	int t = maxdelay;
+	u8 irq;
+
+	irq = isar->read_reg(isar->hw, ISAR_IRQBIT);
+	while (t && !(irq & ISAR_IRQSTA)) {
+		udelay(1);
+		t--;
+	}
+	if (t)	{
+		get_irq_infos(isar);
+		rcv_mbox(isar, NULL);
+	}
+	pr_debug("%s: pulled %d bytes after %d us\n",
+		isar->name, isar->clsb, maxdelay - t);
+	return t;
+}
+
+static int
+ISARVersion(struct isar_hw *isar)
+{
+	int ver;
+
+	/* disable ISAR IRQ */
+	isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
+	isar->buf[0] = ISAR_MSG_HWVER;
+	isar->buf[1] = 0;
+	isar->buf[2] = 1;
+	if (!send_mbox(isar, ISAR_HIS_VNR, 0, 3, NULL))
+		return -1;
+	if (!poll_mbox(isar, 1000))
+		return -2;
+	if (isar->iis == ISAR_IIS_VNR) {
+		if (isar->clsb == 1) {
+			ver = isar->buf[0] & 0xf;
+			return ver;
+		}
+		return -3;
+	}
+	return -4;
+}
+
+static int
+load_firmware(struct isar_hw *isar, const u8 *buf, int size)
+{
+	u32	saved_debug = isar->ch[0].bch.debug;
+	int	ret, cnt;
+	u8	nom, noc;
+	u16	left, val, *sp = (u16 *)buf;
+	u8	*mp;
+	u_long	flags;
+
+	struct {
+		u16 sadr;
+		u16 len;
+		u16 d_key;
+	} blk_head;
+
+	if (1 != isar->version) {
+		pr_err("%s: ISAR wrong version %d firmware download aborted\n",
+			isar->name, isar->version);
+		return -EINVAL;
+	}
+	if (!(saved_debug & DEBUG_HW_FIRMWARE_FIFO))
+		isar->ch[0].bch.debug &= ~DEBUG_HW_BFIFO;
+	pr_debug("%s: load firmware %d words (%d bytes)\n",
+		isar->name, size/2, size);
+	cnt = 0;
+	size /= 2;
+	/* disable ISAR IRQ */
+	spin_lock_irqsave(isar->hwlock, flags);
+	isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
+	spin_unlock_irqrestore(isar->hwlock, flags);
+	while (cnt < size) {
+		blk_head.sadr = le16_to_cpu(*sp++);
+		blk_head.len = le16_to_cpu(*sp++);
+		blk_head.d_key = le16_to_cpu(*sp++);
+		cnt += 3;
+		pr_debug("ISAR firmware block (%#x,%d,%#x)\n",
+			blk_head.sadr, blk_head.len, blk_head.d_key & 0xff);
+		left = blk_head.len;
+		if (cnt + left > size) {
+			pr_info("%s: firmware error have %d need %d words\n",
+				isar->name, size, cnt + left);
+			ret = -EINVAL;
+			goto reterrflg;
+		}
+		spin_lock_irqsave(isar->hwlock, flags);
+		if (!send_mbox(isar, ISAR_HIS_DKEY, blk_head.d_key & 0xff,
+		    0, NULL)) {
+			pr_info("ISAR send_mbox dkey failed\n");
+			ret = -ETIME;
+			goto reterror;
+		}
+		if (!poll_mbox(isar, 1000)) {
+			pr_warning("ISAR poll_mbox dkey failed\n");
+			ret = -ETIME;
+			goto reterror;
+		}
+		spin_unlock_irqrestore(isar->hwlock, flags);
+		if ((isar->iis != ISAR_IIS_DKEY) || isar->cmsb || isar->clsb) {
+			pr_info("ISAR wrong dkey response (%x,%x,%x)\n",
+				isar->iis, isar->cmsb, isar->clsb);
+			ret = 1;
+			goto reterrflg;
+		}
+		while (left > 0) {
+			if (left > 126)
+				noc = 126;
+			else
+				noc = left;
+			nom = (2 * noc) + 3;
+			mp  = isar->buf;
+			/* the ISAR is big endian */
+			*mp++ = blk_head.sadr >> 8;
+			*mp++ = blk_head.sadr & 0xFF;
+			left -= noc;
+			cnt += noc;
+			*mp++ = noc;
+			pr_debug("%s: load %3d words at %04x\n", isar->name,
+				noc, blk_head.sadr);
+			blk_head.sadr += noc;
+			while (noc) {
+				val = le16_to_cpu(*sp++);
+				*mp++ = val >> 8;
+				*mp++ = val & 0xFF;;
+				noc--;
+			}
+			spin_lock_irqsave(isar->hwlock, flags);
+			if (!send_mbox(isar, ISAR_HIS_FIRM, 0, nom, NULL)) {
+				pr_info("ISAR send_mbox prog failed\n");
+				ret = -ETIME;
+				goto reterror;
+			}
+			if (!poll_mbox(isar, 1000)) {
+				pr_info("ISAR poll_mbox prog failed\n");
+				ret = -ETIME;
+				goto reterror;
+			}
+			spin_unlock_irqrestore(isar->hwlock, flags);
+			if ((isar->iis != ISAR_IIS_FIRM) ||
+			    isar->cmsb || isar->clsb) {
+				pr_info("ISAR wrong prog response (%x,%x,%x)\n",
+					isar->iis, isar->cmsb, isar->clsb);
+				ret = -EIO;
+				goto reterrflg;
+			}
+		}
+		pr_debug("%s: ISAR firmware block %d words loaded\n",
+			isar->name, blk_head.len);
+	}
+	isar->ch[0].bch.debug = saved_debug;
+	/* 10ms delay */
+	cnt = 10;
+	while (cnt--)
+		mdelay(1);
+	isar->buf[0] = 0xff;
+	isar->buf[1] = 0xfe;
+	isar->bstat = 0;
+	spin_lock_irqsave(isar->hwlock, flags);
+	if (!send_mbox(isar, ISAR_HIS_STDSP, 0, 2, NULL)) {
+		pr_info("ISAR send_mbox start dsp failed\n");
+		ret = -ETIME;
+		goto reterror;
+	}
+	if (!poll_mbox(isar, 1000)) {
+		pr_info("ISAR poll_mbox start dsp failed\n");
+		ret = -ETIME;
+		goto reterror;
+	}
+	if ((isar->iis != ISAR_IIS_STDSP) || isar->cmsb || isar->clsb) {
+		pr_info("ISAR wrong start dsp response (%x,%x,%x)\n",
+			isar->iis, isar->cmsb, isar->clsb);
+		ret = -EIO;
+		goto reterror;
+	} else
+		pr_debug("%s: ISAR start dsp success\n", isar->name);
+
+	/* NORMAL mode entered */
+	/* Enable IRQs of ISAR */
+	isar->write_reg(isar->hw, ISAR_IRQBIT, ISAR_IRQSTA);
+	spin_unlock_irqrestore(isar->hwlock, flags);
+	cnt = 1000; /* max 1s */
+	while ((!isar->bstat) && cnt) {
+		mdelay(1);
+		cnt--;
+	}
+	if (!cnt) {
+		pr_info("ISAR no general status event received\n");
+		ret = -ETIME;
+		goto reterrflg;
+	} else
+		pr_debug("%s: ISAR general status event %x\n",
+			isar->name, isar->bstat);
+	/* 10ms delay */
+	cnt = 10;
+	while (cnt--)
+		mdelay(1);
+	isar->iis = 0;
+	spin_lock_irqsave(isar->hwlock, flags);
+	if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_STST, 0, NULL)) {
+		pr_info("ISAR send_mbox self tst failed\n");
+		ret = -ETIME;
+		goto reterror;
+	}
+	spin_unlock_irqrestore(isar->hwlock, flags);
+	cnt = 10000; /* max 100 ms */
+	while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
+		udelay(10);
+		cnt--;
+	}
+	mdelay(1);
+	if (!cnt) {
+		pr_info("ISAR no self tst response\n");
+		ret = -ETIME;
+		goto reterrflg;
+	}
+	if ((isar->cmsb == ISAR_CTRL_STST) && (isar->clsb == 1)
+	    && (isar->buf[0] == 0))
+		pr_debug("%s: ISAR selftest OK\n", isar->name);
+	else {
+		pr_info("ISAR selftest not OK %x/%x/%x\n",
+			isar->cmsb, isar->clsb, isar->buf[0]);
+		ret = -EIO;
+		goto reterrflg;
+	}
+	spin_lock_irqsave(isar->hwlock, flags);
+	isar->iis = 0;
+	if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_SWVER, 0, NULL)) {
+		pr_info("ISAR RQST SVN failed\n");
+		ret = -ETIME;
+		goto reterror;
+	}
+	spin_unlock_irqrestore(isar->hwlock, flags);
+	cnt = 30000; /* max 300 ms */
+	while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
+		udelay(10);
+		cnt--;
+	}
+	mdelay(1);
+	if (!cnt) {
+		pr_info("ISAR no SVN response\n");
+		ret = -ETIME;
+		goto reterrflg;
+	} else {
+		if ((isar->cmsb == ISAR_CTRL_SWVER) && (isar->clsb == 1)) {
+			pr_notice("%s: ISAR software version %#x\n",
+				isar->name, isar->buf[0]);
+		} else {
+			pr_info("%s: ISAR wrong swver response (%x,%x)"
+				" cnt(%d)\n", isar->name, isar->cmsb,
+				isar->clsb, cnt);
+			ret = -EIO;
+			goto reterrflg;
+		}
+	}
+	spin_lock_irqsave(isar->hwlock, flags);
+	isar_setup(isar);
+	spin_unlock_irqrestore(isar->hwlock, flags);
+	ret = 0;
+reterrflg:
+	spin_lock_irqsave(isar->hwlock, flags);
+reterror:
+	isar->ch[0].bch.debug = saved_debug;
+	if (ret)
+		/* disable ISAR IRQ */
+		isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
+	spin_unlock_irqrestore(isar->hwlock, flags);
+	return ret;
+}
+
+static inline void
+deliver_status(struct isar_ch *ch, int status)
+{
+	pr_debug("%s: HL->LL FAXIND %x\n", ch->is->name, status);
+	_queue_data(&ch->bch.ch, PH_CONTROL_IND, status, 0, NULL, GFP_ATOMIC);
+}
+
+static inline void
+isar_rcv_frame(struct isar_ch *ch)
+{
+	u8		*ptr;
+
+	if (!ch->is->clsb) {
+		pr_debug("%s; ISAR zero len frame\n", ch->is->name);
+		ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+		return;
+	}
+	switch (ch->bch.state) {
+	case ISDN_P_NONE:
+		pr_debug("%s: ISAR protocol 0 spurious IIS_RDATA %x/%x/%x\n",
+			ch->is->name, ch->is->iis, ch->is->cmsb, ch->is->clsb);
+		ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+		break;
+	case ISDN_P_B_RAW:
+	case ISDN_P_B_L2DTMF:
+	case ISDN_P_B_MODEM_ASYNC:
+		if (!ch->bch.rx_skb) {
+			ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
+						GFP_ATOMIC);
+			if (unlikely(!ch->bch.rx_skb)) {
+				pr_info("%s: B receive out of memory\n",
+					ch->is->name);
+				ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+				break;
+			}
+		}
+		rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
+		recv_Bchannel(&ch->bch, 0);
+		break;
+	case ISDN_P_B_HDLC:
+		if (!ch->bch.rx_skb) {
+			ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
+						GFP_ATOMIC);
+			if (unlikely(!ch->bch.rx_skb)) {
+				pr_info("%s: B receive out of memory\n",
+					ch->is->name);
+				ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+				break;
+			}
+		}
+		if ((ch->bch.rx_skb->len + ch->is->clsb) >
+		    (ch->bch.maxlen + 2)) {
+			pr_debug("%s: incoming packet too large\n",
+				ch->is->name);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			skb_trim(ch->bch.rx_skb, 0);
+			break;
+		}
+		if (ch->is->cmsb & HDLC_ERROR) {
+			pr_debug("%s: ISAR frame error %x len %d\n",
+				ch->is->name, ch->is->cmsb, ch->is->clsb);
+#ifdef ERROR_STATISTIC
+			if (ch->is->cmsb & HDLC_ERR_RER)
+				ch->bch.err_inv++;
+			if (ch->is->cmsb & HDLC_ERR_CER)
+				ch->bch.err_crc++;
+#endif
+			skb_trim(ch->bch.rx_skb, 0);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			break;
+		}
+		if (ch->is->cmsb & HDLC_FSD)
+			skb_trim(ch->bch.rx_skb, 0);
+		ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
+		rcv_mbox(ch->is, ptr);
+		if (ch->is->cmsb & HDLC_FED) {
+			if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
+				pr_debug("%s: ISAR frame to short %d\n",
+					ch->is->name, ch->bch.rx_skb->len);
+				skb_trim(ch->bch.rx_skb, 0);
+				break;
+			}
+			skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
+			recv_Bchannel(&ch->bch, 0);
+		}
+		break;
+	case ISDN_P_B_T30_FAX:
+		if (ch->state != STFAX_ACTIV) {
+			pr_debug("%s: isar_rcv_frame: not ACTIV\n",
+				ch->is->name);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			if (ch->bch.rx_skb)
+				skb_trim(ch->bch.rx_skb, 0);
+			break;
+		}
+		if (!ch->bch.rx_skb) {
+			ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
+						GFP_ATOMIC);
+			if (unlikely(!ch->bch.rx_skb)) {
+				pr_info("%s: B receive out of memory\n",
+					__func__);
+				ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+				break;
+			}
+		}
+		if (ch->cmd == PCTRL_CMD_FRM) {
+			rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
+			pr_debug("%s: isar_rcv_frame: %d\n",
+				ch->is->name, ch->bch.rx_skb->len);
+			if (ch->is->cmsb & SART_NMD) { /* ABORT */
+				pr_debug("%s: isar_rcv_frame: no more data\n",
+					ch->is->name);
+				ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+				send_mbox(ch->is, SET_DPS(ch->dpath) |
+					ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
+					0, NULL);
+				ch->state = STFAX_ESCAPE;
+				/* set_skb_flag(skb, DF_NOMOREDATA); */
+			}
+			recv_Bchannel(&ch->bch, 0);
+			if (ch->is->cmsb & SART_NMD)
+				deliver_status(ch, HW_MOD_NOCARR);
+			break;
+		}
+		if (ch->cmd != PCTRL_CMD_FRH) {
+			pr_debug("%s: isar_rcv_frame: unknown fax mode %x\n",
+				ch->is->name, ch->cmd);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			if (ch->bch.rx_skb)
+				skb_trim(ch->bch.rx_skb, 0);
+			break;
+		}
+		/* PCTRL_CMD_FRH */
+		if ((ch->bch.rx_skb->len + ch->is->clsb) >
+		    (ch->bch.maxlen + 2)) {
+			pr_info("%s: %s incoming packet too large\n",
+				ch->is->name, __func__);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			skb_trim(ch->bch.rx_skb, 0);
+			break;
+		}  else if (ch->is->cmsb & HDLC_ERROR) {
+			pr_info("%s: ISAR frame error %x len %d\n",
+				ch->is->name, ch->is->cmsb, ch->is->clsb);
+			skb_trim(ch->bch.rx_skb, 0);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			break;
+		}
+		if (ch->is->cmsb & HDLC_FSD)
+			skb_trim(ch->bch.rx_skb, 0);
+		ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
+		rcv_mbox(ch->is, ptr);
+		if (ch->is->cmsb & HDLC_FED) {
+			if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
+				pr_info("%s: ISAR frame to short %d\n",
+					ch->is->name, ch->bch.rx_skb->len);
+				skb_trim(ch->bch.rx_skb, 0);
+				break;
+			}
+			skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
+			recv_Bchannel(&ch->bch, 0);
+		}
+		if (ch->is->cmsb & SART_NMD) { /* ABORT */
+			pr_debug("%s: isar_rcv_frame: no more data\n",
+				ch->is->name);
+			ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+			if (ch->bch.rx_skb)
+				skb_trim(ch->bch.rx_skb, 0);
+			send_mbox(ch->is, SET_DPS(ch->dpath) |
+				ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC, 0, NULL);
+			ch->state = STFAX_ESCAPE;
+			deliver_status(ch, HW_MOD_NOCARR);
+		}
+		break;
+	default:
+		pr_info("isar_rcv_frame protocol (%x)error\n", ch->bch.state);
+		ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
+		break;
+	}
+}
+
+static void
+isar_fill_fifo(struct isar_ch *ch)
+{
+	int count;
+	u8 msb;
+	u8 *ptr;
+
+	pr_debug("%s: ch%d  tx_skb %p tx_idx %d\n",
+		ch->is->name, ch->bch.nr, ch->bch.tx_skb, ch->bch.tx_idx);
+	if (!ch->bch.tx_skb)
+		return;
+	count = ch->bch.tx_skb->len - ch->bch.tx_idx;
+	if (count <= 0)
+		return;
+	if (!(ch->is->bstat &
+		(ch->dpath == 1 ? BSTAT_RDM1 : BSTAT_RDM2)))
+		return;
+	if (count > ch->mml) {
+		msb = 0;
+		count = ch->mml;
+	} else {
+		msb = HDLC_FED;
+	}
+	ptr = ch->bch.tx_skb->data + ch->bch.tx_idx;
+	if (!ch->bch.tx_idx) {
+		pr_debug("%s: frame start\n", ch->is->name);
+		if ((ch->bch.state == ISDN_P_B_T30_FAX) &&
+			(ch->cmd == PCTRL_CMD_FTH)) {
+			if (count > 1) {
+				if ((ptr[0] == 0xff) && (ptr[1] == 0x13)) {
+					/* last frame */
+					test_and_set_bit(FLG_LASTDATA,
+						&ch->bch.Flags);
+					pr_debug("%s: set LASTDATA\n",
+						ch->is->name);
+					if (msb == HDLC_FED)
+						test_and_set_bit(FLG_DLEETX,
+							&ch->bch.Flags);
+				}
+			}
+		}
+		msb |= HDLC_FST;
+	}
+	ch->bch.tx_idx += count;
+	switch (ch->bch.state) {
+	case ISDN_P_NONE:
+		pr_info("%s: wrong protocol 0\n", __func__);
+		break;
+	case ISDN_P_B_RAW:
+	case ISDN_P_B_L2DTMF:
+	case ISDN_P_B_MODEM_ASYNC:
+		send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
+			0, count, ptr);
+		break;
+	case ISDN_P_B_HDLC:
+		send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
+			msb, count, ptr);
+		break;
+	case ISDN_P_B_T30_FAX:
+		if (ch->state != STFAX_ACTIV)
+			pr_debug("%s: not ACTIV\n", ch->is->name);
+		else if (ch->cmd == PCTRL_CMD_FTH)
+			send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
+				msb, count, ptr);
+		else if (ch->cmd == PCTRL_CMD_FTM)
+			send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
+				0, count, ptr);
+		else
+			pr_debug("%s: not FTH/FTM\n", ch->is->name);
+		break;
+	default:
+		pr_info("%s: protocol(%x) error\n",
+			__func__, ch->bch.state);
+		break;
+	}
+}
+
+static inline struct isar_ch *
+sel_bch_isar(struct isar_hw *isar, u8 dpath)
+{
+	struct isar_ch	*base = &isar->ch[0];
+
+	if ((!dpath) || (dpath > 2))
+		return NULL;
+	if (base->dpath == dpath)
+		return base;
+	base++;
+	if (base->dpath == dpath)
+		return base;
+	return NULL;
+}
+
+static void
+send_next(struct isar_ch *ch)
+{
+	pr_debug("%s: %s ch%d tx_skb %p tx_idx %d\n",
+		ch->is->name, __func__, ch->bch.nr,
+		ch->bch.tx_skb, ch->bch.tx_idx);
+	if (ch->bch.state == ISDN_P_B_T30_FAX) {
+		if (ch->cmd == PCTRL_CMD_FTH) {
+			if (test_bit(FLG_LASTDATA, &ch->bch.Flags)) {
+				pr_debug("set NMD_DATA\n");
+				test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
+			}
+		} else if (ch->cmd == PCTRL_CMD_FTM) {
+			if (test_bit(FLG_DLEETX, &ch->bch.Flags)) {
+				test_and_set_bit(FLG_LASTDATA, &ch->bch.Flags);
+				test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
+			}
+		}
+	}
+	if (ch->bch.tx_skb) {
+		/* send confirm, on trans, free on hdlc. */
+		if (test_bit(FLG_TRANSPARENT, &ch->bch.Flags))
+			confirm_Bsend(&ch->bch);
+		dev_kfree_skb(ch->bch.tx_skb);
+	}
+	if (get_next_bframe(&ch->bch))
+		isar_fill_fifo(ch);
+	else {
+		if (test_and_clear_bit(FLG_DLEETX, &ch->bch.Flags)) {
+			if (test_and_clear_bit(FLG_LASTDATA,
+			    &ch->bch.Flags)) {
+				if (test_and_clear_bit(FLG_NMD_DATA,
+				    &ch->bch.Flags)) {
+					u8 zd = 0;
+					send_mbox(ch->is, SET_DPS(ch->dpath) |
+						ISAR_HIS_SDATA, 0x01, 1, &zd);
+				}
+				test_and_set_bit(FLG_LL_OK, &ch->bch.Flags);
+			} else {
+				deliver_status(ch, HW_MOD_CONNECT);
+			}
+		}
+	}
+}
+
+static void
+check_send(struct isar_hw *isar, u8 rdm)
+{
+	struct isar_ch	*ch;
+
+	pr_debug("%s: rdm %x\n", isar->name, rdm);
+	if (rdm & BSTAT_RDM1) {
+		ch = sel_bch_isar(isar, 1);
+		if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
+			if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
+			    ch->bch.tx_idx))
+				isar_fill_fifo(ch);
+			else
+				send_next(ch);
+		}
+	}
+	if (rdm & BSTAT_RDM2) {
+		ch = sel_bch_isar(isar, 2);
+		if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
+			if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
+			    ch->bch.tx_idx))
+				isar_fill_fifo(ch);
+			else
+				send_next(ch);
+		}
+	}
+}
+
+const char *dmril[] = {"NO SPEED", "1200/75", "NODEF2", "75/1200", "NODEF4",
+			"300", "600", "1200", "2400", "4800", "7200",
+			"9600nt", "9600t", "12000", "14400", "WRONG"};
+const char *dmrim[] = {"NO MOD", "NO DEF", "V32/V32b", "V22", "V21",
+			"Bell103", "V23", "Bell202", "V17", "V29", "V27ter"};
+
+static void
+isar_pump_status_rsp(struct isar_ch *ch) {
+	u8 ril = ch->is->buf[0];
+	u8 rim;
+
+	if (!test_and_clear_bit(ISAR_RATE_REQ, &ch->is->Flags))
+		return;
+	if (ril > 14) {
+		pr_info("%s: wrong pstrsp ril=%d\n", ch->is->name, ril);
+		ril = 15;
+	}
+	switch (ch->is->buf[1]) {
+	case 0:
+		rim = 0;
+		break;
+	case 0x20:
+		rim = 2;
+		break;
+	case 0x40:
+		rim = 3;
+		break;
+	case 0x41:
+		rim = 4;
+		break;
+	case 0x51:
+		rim = 5;
+		break;
+	case 0x61:
+		rim = 6;
+		break;
+	case 0x71:
+		rim = 7;
+		break;
+	case 0x82:
+		rim = 8;
+		break;
+	case 0x92:
+		rim = 9;
+		break;
+	case 0xa2:
+		rim = 10;
+		break;
+	default:
+		rim = 1;
+		break;
+	}
+	sprintf(ch->conmsg, "%s %s", dmril[ril], dmrim[rim]);
+	pr_debug("%s: pump strsp %s\n", ch->is->name, ch->conmsg);
+}
+
+static void
+isar_pump_statev_modem(struct isar_ch *ch, u8 devt) {
+	u8 dps = SET_DPS(ch->dpath);
+
+	switch (devt) {
+	case PSEV_10MS_TIMER:
+		pr_debug("%s: pump stev TIMER\n", ch->is->name);
+		break;
+	case PSEV_CON_ON:
+		pr_debug("%s: pump stev CONNECT\n", ch->is->name);
+		deliver_status(ch, HW_MOD_CONNECT);
+		break;
+	case PSEV_CON_OFF:
+		pr_debug("%s: pump stev NO CONNECT\n", ch->is->name);
+		send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
+		deliver_status(ch, HW_MOD_NOCARR);
+		break;
+	case PSEV_V24_OFF:
+		pr_debug("%s: pump stev V24 OFF\n", ch->is->name);
+		break;
+	case PSEV_CTS_ON:
+		pr_debug("%s: pump stev CTS ON\n", ch->is->name);
+		break;
+	case PSEV_CTS_OFF:
+		pr_debug("%s pump stev CTS OFF\n", ch->is->name);
+		break;
+	case PSEV_DCD_ON:
+		pr_debug("%s: pump stev CARRIER ON\n", ch->is->name);
+		test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
+		send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
+		break;
+	case PSEV_DCD_OFF:
+		pr_debug("%s: pump stev CARRIER OFF\n", ch->is->name);
+		break;
+	case PSEV_DSR_ON:
+		pr_debug("%s: pump stev DSR ON\n", ch->is->name);
+		break;
+	case PSEV_DSR_OFF:
+		pr_debug("%s: pump stev DSR_OFF\n", ch->is->name);
+		break;
+	case PSEV_REM_RET:
+		pr_debug("%s: pump stev REMOTE RETRAIN\n", ch->is->name);
+		break;
+	case PSEV_REM_REN:
+		pr_debug("%s: pump stev REMOTE RENEGOTIATE\n", ch->is->name);
+		break;
+	case PSEV_GSTN_CLR:
+		pr_debug("%s: pump stev GSTN CLEAR\n", ch->is->name);
+		break;
+	default:
+		pr_info("u%s: nknown pump stev %x\n", ch->is->name, devt);
+		break;
+	}
+}
+
+static void
+isar_pump_statev_fax(struct isar_ch *ch, u8 devt) {
+	u8 dps = SET_DPS(ch->dpath);
+	u8 p1;
+
+	switch (devt) {
+	case PSEV_10MS_TIMER:
+		pr_debug("%s: pump stev TIMER\n", ch->is->name);
+		break;
+	case PSEV_RSP_READY:
+		pr_debug("%s: pump stev RSP_READY\n", ch->is->name);
+		ch->state = STFAX_READY;
+		deliver_status(ch, HW_MOD_READY);
+#ifdef AUTOCON
+		if (test_bit(BC_FLG_ORIG, &ch->bch.Flags))
+			isar_pump_cmd(bch, HW_MOD_FRH, 3);
+		else
+			isar_pump_cmd(bch, HW_MOD_FTH, 3);
+#endif
+		break;
+	case PSEV_LINE_TX_H:
+		if (ch->state == STFAX_LINE) {
+			pr_debug("%s: pump stev LINE_TX_H\n", ch->is->name);
+			ch->state = STFAX_CONT;
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+				PCTRL_CMD_CONT, 0, NULL);
+		} else {
+			pr_debug("%s: pump stev LINE_TX_H wrong st %x\n",
+				ch->is->name, ch->state);
+		}
+		break;
+	case PSEV_LINE_RX_H:
+		if (ch->state == STFAX_LINE) {
+			pr_debug("%s: pump stev LINE_RX_H\n", ch->is->name);
+			ch->state = STFAX_CONT;
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+				PCTRL_CMD_CONT, 0, NULL);
+		} else {
+			pr_debug("%s: pump stev LINE_RX_H wrong st %x\n",
+				ch->is->name, ch->state);
+		}
+		break;
+	case PSEV_LINE_TX_B:
+		if (ch->state == STFAX_LINE) {
+			pr_debug("%s: pump stev LINE_TX_B\n", ch->is->name);
+			ch->state = STFAX_CONT;
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+				PCTRL_CMD_CONT, 0, NULL);
+		} else {
+			pr_debug("%s: pump stev LINE_TX_B wrong st %x\n",
+				ch->is->name, ch->state);
+		}
+		break;
+	case PSEV_LINE_RX_B:
+		if (ch->state == STFAX_LINE) {
+			pr_debug("%s: pump stev LINE_RX_B\n", ch->is->name);
+			ch->state = STFAX_CONT;
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+				PCTRL_CMD_CONT, 0, NULL);
+		} else {
+			pr_debug("%s: pump stev LINE_RX_B wrong st %x\n",
+				ch->is->name, ch->state);
+		}
+		break;
+	case PSEV_RSP_CONN:
+		if (ch->state == STFAX_CONT) {
+			pr_debug("%s: pump stev RSP_CONN\n", ch->is->name);
+			ch->state = STFAX_ACTIV;
+			test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
+			send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
+			if (ch->cmd == PCTRL_CMD_FTH) {
+				int delay = (ch->mod == 3) ? 1000 : 200;
+				/* 1s (200 ms) Flags before data */
+				if (test_and_set_bit(FLG_FTI_RUN,
+				    &ch->bch.Flags))
+					del_timer(&ch->ftimer);
+				ch->ftimer.expires =
+					jiffies + ((delay * HZ)/1000);
+				test_and_set_bit(FLG_LL_CONN,
+					&ch->bch.Flags);
+				add_timer(&ch->ftimer);
+			} else {
+				deliver_status(ch, HW_MOD_CONNECT);
+			}
+		} else {
+			pr_debug("%s: pump stev RSP_CONN wrong st %x\n",
+				ch->is->name, ch->state);
+		}
+		break;
+	case PSEV_FLAGS_DET:
+		pr_debug("%s: pump stev FLAGS_DET\n", ch->is->name);
+		break;
+	case PSEV_RSP_DISC:
+		pr_debug("%s: pump stev RSP_DISC state(%d)\n",
+			ch->is->name, ch->state);
+		if (ch->state == STFAX_ESCAPE) {
+			p1 = 5;
+			switch (ch->newcmd) {
+			case 0:
+				ch->state = STFAX_READY;
+				break;
+			case PCTRL_CMD_FTM:
+				p1 = 2;
+			case PCTRL_CMD_FTH:
+				send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+					PCTRL_CMD_SILON, 1, &p1);
+				ch->state = STFAX_SILDET;
+				break;
+			case PCTRL_CMD_FRH:
+			case PCTRL_CMD_FRM:
+				ch->mod = ch->newmod;
+				p1 = ch->newmod;
+				ch->newmod = 0;
+				ch->cmd = ch->newcmd;
+				ch->newcmd = 0;
+				send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+					ch->cmd, 1, &p1);
+				ch->state = STFAX_LINE;
+				ch->try_mod = 3;
+				break;
+			default:
+				pr_debug("%s: RSP_DISC unknown newcmd %x\n",
+					ch->is->name, ch->newcmd);
+				break;
+			}
+		} else if (ch->state == STFAX_ACTIV) {
+			if (test_and_clear_bit(FLG_LL_OK, &ch->bch.Flags))
+				deliver_status(ch, HW_MOD_OK);
+			else if (ch->cmd == PCTRL_CMD_FRM)
+				deliver_status(ch, HW_MOD_NOCARR);
+			else
+				deliver_status(ch, HW_MOD_FCERROR);
+			ch->state = STFAX_READY;
+		} else if (ch->state != STFAX_SILDET) {
+			/* ignore in STFAX_SILDET */
+			ch->state = STFAX_READY;
+			deliver_status(ch, HW_MOD_FCERROR);
+		}
+		break;
+	case PSEV_RSP_SILDET:
+		pr_debug("%s: pump stev RSP_SILDET\n", ch->is->name);
+		if (ch->state == STFAX_SILDET) {
+			ch->mod = ch->newmod;
+			p1 = ch->newmod;
+			ch->newmod = 0;
+			ch->cmd = ch->newcmd;
+			ch->newcmd = 0;
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+				ch->cmd, 1, &p1);
+			ch->state = STFAX_LINE;
+			ch->try_mod = 3;
+		}
+		break;
+	case PSEV_RSP_SILOFF:
+		pr_debug("%s: pump stev RSP_SILOFF\n", ch->is->name);
+		break;
+	case PSEV_RSP_FCERR:
+		if (ch->state == STFAX_LINE) {
+			pr_debug("%s: pump stev RSP_FCERR try %d\n",
+				ch->is->name, ch->try_mod);
+			if (ch->try_mod--) {
+				send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
+					ch->cmd, 1, &ch->mod);
+				break;
+			}
+		}
+		pr_debug("%s: pump stev RSP_FCERR\n", ch->is->name);
+		ch->state = STFAX_ESCAPE;
+		send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
+			0, NULL);
+		deliver_status(ch, HW_MOD_FCERROR);
+		break;
+	default:
+		break;
+	}
+}
+
+void
+mISDNisar_irq(struct isar_hw *isar)
+{
+	struct isar_ch *ch;
+
+	get_irq_infos(isar);
+	switch (isar->iis & ISAR_IIS_MSCMSD) {
+	case ISAR_IIS_RDATA:
+		ch = sel_bch_isar(isar, isar->iis >> 6);
+		if (ch)
+			isar_rcv_frame(ch);
+		else {
+			pr_debug("%s: ISAR spurious IIS_RDATA %x/%x/%x\n",
+				isar->name, isar->iis, isar->cmsb,
+				isar->clsb);
+			isar->write_reg(isar->hw, ISAR_IIA, 0);
+		}
+		break;
+	case ISAR_IIS_GSTEV:
+		isar->write_reg(isar->hw, ISAR_IIA, 0);
+		isar->bstat |= isar->cmsb;
+		check_send(isar, isar->cmsb);
+		break;
+	case ISAR_IIS_BSTEV:
+#ifdef ERROR_STATISTIC
+		ch = sel_bch_isar(isar, isar->iis >> 6);
+		if (ch) {
+			if (isar->cmsb == BSTEV_TBO)
+				ch->bch.err_tx++;
+			if (isar->cmsb == BSTEV_RBO)
+				ch->bch.err_rdo++;
+		}
+#endif
+		pr_debug("%s: Buffer STEV dpath%d msb(%x)\n",
+			isar->name, isar->iis>>6, isar->cmsb);
+		isar->write_reg(isar->hw, ISAR_IIA, 0);
+		break;
+	case ISAR_IIS_PSTEV:
+		ch = sel_bch_isar(isar, isar->iis >> 6);
+		if (ch) {
+			rcv_mbox(isar, NULL);
+			if (ch->bch.state == ISDN_P_B_MODEM_ASYNC)
+				isar_pump_statev_modem(ch, isar->cmsb);
+			else if (ch->bch.state == ISDN_P_B_T30_FAX)
+				isar_pump_statev_fax(ch, isar->cmsb);
+			else if (ch->bch.state == ISDN_P_B_RAW) {
+				int	tt;
+				tt = isar->cmsb | 0x30;
+				if (tt == 0x3e)
+					tt = '*';
+				else if (tt == 0x3f)
+					tt = '#';
+				else if (tt > '9')
+					tt += 7;
+				tt |= DTMF_TONE_VAL;
+				_queue_data(&ch->bch.ch, PH_CONTROL_IND,
+					MISDN_ID_ANY, sizeof(tt), &tt,
+					GFP_ATOMIC);
+			} else
+				pr_debug("%s: ISAR IIS_PSTEV pm %d sta %x\n",
+					isar->name, ch->bch.state,
+					isar->cmsb);
+		} else {
+			pr_debug("%s: ISAR spurious IIS_PSTEV %x/%x/%x\n",
+				isar->name, isar->iis, isar->cmsb,
+				isar->clsb);
+			isar->write_reg(isar->hw, ISAR_IIA, 0);
+		}
+		break;
+	case ISAR_IIS_PSTRSP:
+		ch = sel_bch_isar(isar, isar->iis >> 6);
+		if (ch) {
+			rcv_mbox(isar, NULL);
+			isar_pump_status_rsp(ch);
+		} else {
+			pr_debug("%s: ISAR spurious IIS_PSTRSP %x/%x/%x\n",
+				isar->name, isar->iis, isar->cmsb,
+				isar->clsb);
+			isar->write_reg(isar->hw, ISAR_IIA, 0);
+		}
+		break;
+	case ISAR_IIS_DIAG:
+	case ISAR_IIS_BSTRSP:
+	case ISAR_IIS_IOM2RSP:
+		rcv_mbox(isar, NULL);
+		break;
+	case ISAR_IIS_INVMSG:
+		rcv_mbox(isar, NULL);
+		pr_debug("%s: invalid msg his:%x\n", isar->name, isar->cmsb);
+		break;
+	default:
+		rcv_mbox(isar, NULL);
+		pr_debug("%s: unhandled msg iis(%x) ctrl(%x/%x)\n",
+			isar->name, isar->iis, isar->cmsb, isar->clsb);
+		break;
+	}
+}
+EXPORT_SYMBOL(mISDNisar_irq);
+
+static void
+ftimer_handler(unsigned long data)
+{
+	struct isar_ch *ch = (struct isar_ch *)data;
+
+	pr_debug("%s: ftimer flags %lx\n", ch->is->name, ch->bch.Flags);
+	test_and_clear_bit(FLG_FTI_RUN, &ch->bch.Flags);
+	if (test_and_clear_bit(FLG_LL_CONN, &ch->bch.Flags))
+		deliver_status(ch, HW_MOD_CONNECT);
+}
+
+static void
+setup_pump(struct isar_ch *ch) {
+	u8 dps = SET_DPS(ch->dpath);
+	u8 ctrl, param[6];
+
+	switch (ch->bch.state) {
+	case ISDN_P_NONE:
+	case ISDN_P_B_RAW:
+	case ISDN_P_B_HDLC:
+		send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, PMOD_BYPASS, 0, NULL);
+		break;
+	case ISDN_P_B_L2DTMF:
+		if (test_bit(FLG_DTMFSEND, &ch->bch.Flags)) {
+			param[0] = 5; /* TOA 5 db */
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
+				PMOD_DTMF_TRANS, 1, param);
+		} else {
+			param[0] = 40; /* REL -46 dbm */
+			send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
+				PMOD_DTMF, 1, param);
+		}
+	case ISDN_P_B_MODEM_ASYNC:
+		ctrl = PMOD_DATAMODEM;
+		if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
+			ctrl |= PCTRL_ORIG;
+			param[5] = PV32P6_CTN;
+		} else {
+			param[5] = PV32P6_ATN;
+		}
+		param[0] = 6; /* 6 db */
+		param[1] = PV32P2_V23R | PV32P2_V22A | PV32P2_V22B |
+			PV32P2_V22C | PV32P2_V21 | PV32P2_BEL;
+		param[2] = PV32P3_AMOD | PV32P3_V32B | PV32P3_V23B;
+		param[3] = PV32P4_UT144;
+		param[4] = PV32P5_UT144;
+		send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 6, param);
+		break;
+	case ISDN_P_B_T30_FAX:
+		ctrl = PMOD_FAX;
+		if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
+			ctrl |= PCTRL_ORIG;
+			param[1] = PFAXP2_CTN;
+		} else {
+			param[1] = PFAXP2_ATN;
+		}
+		param[0] = 6; /* 6 db */
+		send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 2, param);
+		ch->state = STFAX_NULL;
+		ch->newcmd = 0;
+		ch->newmod = 0;
+		test_and_set_bit(FLG_FTI_RUN, &ch->bch.Flags);
+		break;
+	}
+	udelay(1000);
+	send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
+	udelay(1000);
+}
+
+static void
+setup_sart(struct isar_ch *ch) {
+	u8 dps = SET_DPS(ch->dpath);
+	u8 ctrl, param[2] = {0, 0};
+
+	switch (ch->bch.state) {
+	case ISDN_P_NONE:
+		send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_DISABLE,
+			0, NULL);
+		break;
+	case ISDN_P_B_RAW:
+	case ISDN_P_B_L2DTMF:
+		send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_BINARY,
+			2, param);
+		break;
+	case ISDN_P_B_HDLC:
+	case ISDN_P_B_T30_FAX:
+		send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_HDLC,
+			1, param);
+		break;
+	case ISDN_P_B_MODEM_ASYNC:
+		ctrl = SMODE_V14 | SCTRL_HDMC_BOTH;
+		param[0] = S_P1_CHS_8;
+		param[1] = S_P2_BFT_DEF;
+		send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, ctrl, 2, param);
+		break;
+	}
+	udelay(1000);
+	send_mbox(ch->is, dps | ISAR_HIS_BSTREQ, 0, 0, NULL);
+	udelay(1000);
+}
+
+static void
+setup_iom2(struct isar_ch *ch) {
+	u8 dps = SET_DPS(ch->dpath);
+	u8 cmsb = IOM_CTRL_ENA, msg[5] = {IOM_P1_TXD, 0, 0, 0, 0};
+
+	if (ch->bch.nr == 2) {
+		msg[1] = 1;
+		msg[3] = 1;
+	}
+	switch (ch->bch.state) {
+	case ISDN_P_NONE:
+		cmsb = 0;
+		/* dummy slot */
+		msg[1] = ch->dpath + 2;
+		msg[3] = ch->dpath + 2;
+		break;
+	case ISDN_P_B_RAW:
+	case ISDN_P_B_HDLC:
+		break;
+	case ISDN_P_B_MODEM_ASYNC:
+	case ISDN_P_B_T30_FAX:
+		cmsb |= IOM_CTRL_RCV;
+	case ISDN_P_B_L2DTMF:
+		if (test_bit(FLG_DTMFSEND, &ch->bch.Flags))
+			cmsb |= IOM_CTRL_RCV;
+		cmsb |= IOM_CTRL_ALAW;
+		break;
+	}
+	send_mbox(ch->is, dps | ISAR_HIS_IOM2CFG, cmsb, 5, msg);
+	udelay(1000);
+	send_mbox(ch->is, dps | ISAR_HIS_IOM2REQ, 0, 0, NULL);
+	udelay(1000);
+}
+
+static int
+modeisar(struct isar_ch *ch, u32 bprotocol)
+{
+	/* Here we are selecting the best datapath for requested protocol */
+	if (ch->bch.state == ISDN_P_NONE) { /* New Setup */
+		switch (bprotocol) {
+		case ISDN_P_NONE: /* init */
+			if (!ch->dpath)
+				/* no init for dpath 0 */
+				return 0;
+			test_and_clear_bit(FLG_HDLC, &ch->bch.Flags);
+			test_and_clear_bit(FLG_TRANSPARENT, &ch->bch.Flags);
+			break;
+		case ISDN_P_B_RAW:
+		case ISDN_P_B_HDLC:
+			/* best is datapath 2 */
+			if (!test_and_set_bit(ISAR_DP2_USE, &ch->is->Flags))
+				ch->dpath = 2;
+			else if (!test_and_set_bit(ISAR_DP1_USE,
+			    &ch->is->Flags))
+				ch->dpath = 1;
+			else {
+				pr_info("modeisar both pathes in use\n");
+				return -EBUSY;
+			}
+			if (bprotocol == ISDN_P_B_HDLC)
+				test_and_set_bit(FLG_HDLC, &ch->bch.Flags);
+			else
+				test_and_set_bit(FLG_TRANSPARENT,
+					&ch->bch.Flags);
+			break;
+		case ISDN_P_B_MODEM_ASYNC:
+		case ISDN_P_B_T30_FAX:
+		case ISDN_P_B_L2DTMF:
+			/* only datapath 1 */
+			if (!test_and_set_bit(ISAR_DP1_USE, &ch->is->Flags))
+				ch->dpath = 1;
+			else {
+				pr_info("%s: ISAR modeisar analog functions"
+					"only with DP1\n", ch->is->name);
+				return -EBUSY;
+			}
+			break;
+		default:
+			pr_info("%s: protocol not known %x\n", ch->is->name,
+				bprotocol);
+			return -ENOPROTOOPT;
+		}
+	}
+	pr_debug("%s: ISAR ch%d dp%d protocol %x->%x\n", ch->is->name,
+		ch->bch.nr, ch->dpath, ch->bch.state, bprotocol);
+	ch->bch.state = bprotocol;
+	setup_pump(ch);
+	setup_iom2(ch);
+	setup_sart(ch);
+	if (ch->bch.state == ISDN_P_NONE) {
+		/* Clear resources */
+		if (ch->dpath == 1)
+			test_and_clear_bit(ISAR_DP1_USE, &ch->is->Flags);
+		else if (ch->dpath == 2)
+			test_and_clear_bit(ISAR_DP2_USE, &ch->is->Flags);
+		ch->dpath = 0;
+		ch->is->ctrl(ch->is->hw, HW_DEACT_IND, ch->bch.nr);
+	} else
+		ch->is->ctrl(ch->is->hw, HW_ACTIVATE_IND, ch->bch.nr);
+	return 0;
+}
+
+static void
+isar_pump_cmd(struct isar_ch *ch, u32 cmd, u8 para)
+{
+	u8 dps = SET_DPS(ch->dpath);
+	u8 ctrl = 0, nom = 0, p1 = 0;
+
+	pr_debug("%s: isar_pump_cmd %x/%x state(%x)\n",
+		ch->is->name, cmd, para, ch->bch.state);
+	switch (cmd) {
+	case HW_MOD_FTM:
+		if (ch->state == STFAX_READY) {
+			p1 = para;
+			ctrl = PCTRL_CMD_FTM;
+			nom = 1;
+			ch->state = STFAX_LINE;
+			ch->cmd = ctrl;
+			ch->mod = para;
+			ch->newmod = 0;
+			ch->newcmd = 0;
+			ch->try_mod = 3;
+		} else if ((ch->state == STFAX_ACTIV) &&
+		    (ch->cmd == PCTRL_CMD_FTM) && (ch->mod == para))
+			deliver_status(ch, HW_MOD_CONNECT);
+		else {
+			ch->newmod = para;
+			ch->newcmd = PCTRL_CMD_FTM;
+			nom = 0;
+			ctrl = PCTRL_CMD_ESC;
+			ch->state = STFAX_ESCAPE;
+		}
+		break;
+	case HW_MOD_FTH:
+		if (ch->state == STFAX_READY) {
+			p1 = para;
+			ctrl = PCTRL_CMD_FTH;
+			nom = 1;
+			ch->state = STFAX_LINE;
+			ch->cmd = ctrl;
+			ch->mod = para;
+			ch->newmod = 0;
+			ch->newcmd = 0;
+			ch->try_mod = 3;
+		} else if ((ch->state == STFAX_ACTIV) &&
+		    (ch->cmd == PCTRL_CMD_FTH) && (ch->mod == para))
+				deliver_status(ch, HW_MOD_CONNECT);
+		else {
+			ch->newmod = para;
+			ch->newcmd = PCTRL_CMD_FTH;
+			nom = 0;
+			ctrl = PCTRL_CMD_ESC;
+			ch->state = STFAX_ESCAPE;
+		}
+		break;
+	case HW_MOD_FRM:
+		if (ch->state == STFAX_READY) {
+			p1 = para;
+			ctrl = PCTRL_CMD_FRM;
+			nom = 1;
+			ch->state = STFAX_LINE;
+			ch->cmd = ctrl;
+			ch->mod = para;
+			ch->newmod = 0;
+			ch->newcmd = 0;
+			ch->try_mod = 3;
+		} else if ((ch->state == STFAX_ACTIV) &&
+		    (ch->cmd == PCTRL_CMD_FRM) && (ch->mod == para))
+			deliver_status(ch, HW_MOD_CONNECT);
+		else {
+			ch->newmod = para;
+			ch->newcmd = PCTRL_CMD_FRM;
+			nom = 0;
+			ctrl = PCTRL_CMD_ESC;
+			ch->state = STFAX_ESCAPE;
+		}
+		break;
+	case HW_MOD_FRH:
+		if (ch->state == STFAX_READY) {
+			p1 = para;
+			ctrl = PCTRL_CMD_FRH;
+			nom = 1;
+			ch->state = STFAX_LINE;
+			ch->cmd = ctrl;
+			ch->mod = para;
+			ch->newmod = 0;
+			ch->newcmd = 0;
+			ch->try_mod = 3;
+		} else if ((ch->state == STFAX_ACTIV) &&
+		    (ch->cmd == PCTRL_CMD_FRH) && (ch->mod == para))
+			deliver_status(ch, HW_MOD_CONNECT);
+		else {
+			ch->newmod = para;
+			ch->newcmd = PCTRL_CMD_FRH;
+			nom = 0;
+			ctrl = PCTRL_CMD_ESC;
+			ch->state = STFAX_ESCAPE;
+		}
+		break;
+	case PCTRL_CMD_TDTMF:
+		p1 = para;
+		nom = 1;
+		ctrl = PCTRL_CMD_TDTMF;
+		break;
+	}
+	if (ctrl)
+		send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, ctrl, nom, &p1);
+}
+
+static void
+isar_setup(struct isar_hw *isar)
+{
+	u8 msg;
+	int i;
+
+	/* Dpath 1, 2 */
+	msg = 61;
+	for (i = 0; i < 2; i++) {
+		/* Buffer Config */
+		send_mbox(isar, (i ? ISAR_HIS_DPS2 : ISAR_HIS_DPS1) |
+			ISAR_HIS_P12CFG, 4, 1, &msg);
+		isar->ch[i].mml = msg;
+		isar->ch[i].bch.state = 0;
+		isar->ch[i].dpath = i + 1;
+		modeisar(&isar->ch[i], ISDN_P_NONE);
+	}
+}
+
+static int
+isar_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
+	int ret = -EINVAL;
+	struct mISDNhead *hh = mISDN_HEAD_P(skb);
+	u32 id, *val;
+	u_long flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(ich->is->hwlock, flags);
+		ret = bchannel_senddata(bch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			ret = 0;
+			isar_fill_fifo(ich);
+			spin_unlock_irqrestore(ich->is->hwlock, flags);
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(ich->is->hwlock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		spin_lock_irqsave(ich->is->hwlock, flags);
+		if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
+			ret = modeisar(ich, ch->protocol);
+		else
+			ret = 0;
+		spin_unlock_irqrestore(ich->is->hwlock, flags);
+		if (!ret)
+			_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+				NULL, GFP_KERNEL);
+		break;
+	case PH_DEACTIVATE_REQ:
+		spin_lock_irqsave(ich->is->hwlock, flags);
+		mISDN_clear_bchannel(bch);
+		modeisar(ich, ISDN_P_NONE);
+		spin_unlock_irqrestore(ich->is->hwlock, flags);
+		_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
+			NULL, GFP_KERNEL);
+		ret = 0;
+		break;
+	case PH_CONTROL_REQ:
+		val = (u32 *)skb->data;
+		pr_debug("%s: PH_CONTROL | REQUEST %x/%x\n", ich->is->name,
+			hh->id, *val);
+		if ((hh->id == 0) && ((*val & ~DTMF_TONE_MASK) ==
+		    DTMF_TONE_VAL)) {
+			if (bch->state == ISDN_P_B_L2DTMF) {
+				char tt = *val & DTMF_TONE_MASK;
+
+				if (tt == '*')
+					tt = 0x1e;
+				else if (tt == '#')
+					tt = 0x1f;
+				else if (tt > '9')
+					tt -= 7;
+				tt &= 0x1f;
+				spin_lock_irqsave(ich->is->hwlock, flags);
+				isar_pump_cmd(ich, PCTRL_CMD_TDTMF, tt);
+				spin_unlock_irqrestore(ich->is->hwlock, flags);
+			} else {
+				pr_info("%s: DTMF send wrong protocol %x\n",
+					__func__, bch->state);
+				return -EINVAL;
+			}
+		} else if ((hh->id == HW_MOD_FRM) || (hh->id == HW_MOD_FRH) ||
+		    (hh->id == HW_MOD_FTM) || (hh->id == HW_MOD_FTH)) {
+			for (id = 0; id < FAXMODCNT; id++)
+				if (faxmodulation[id] == *val)
+					break;
+			if ((FAXMODCNT > id) &&
+			    test_bit(FLG_INITIALIZED, &bch->Flags)) {
+				pr_debug("%s: isar: new mod\n", ich->is->name);
+				isar_pump_cmd(ich, hh->id, *val);
+				ret = 0;
+			} else {
+				pr_info("%s: wrong modulation\n",
+					ich->is->name);
+				ret = -EINVAL;
+			}
+		} else if (hh->id == HW_MOD_LASTDATA)
+			test_and_set_bit(FLG_DLEETX, &bch->Flags);
+		else {
+			pr_info("%s: unknown PH_CONTROL_REQ %x\n",
+				ich->is->name, hh->id);
+			ret = -EINVAL;
+		}
+	default:
+		pr_info("%s: %s unknown prim(%x,%x)\n",
+			ich->is->name, __func__, hh->prim, hh->id);
+		ret = -EINVAL;
+	}
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	/* Nothing implemented yet */
+	case MISDN_CTRL_FILL_EMPTY:
+	default:
+		pr_info("%s: unknown Op %x\n", __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+isar_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
+	int ret = -EINVAL;
+	u_long flags;
+
+	pr_debug("%s: %s cmd:%x %p\n", ich->is->name, __func__, cmd, arg);
+	switch (cmd) {
+	case CLOSE_CHANNEL:
+		test_and_clear_bit(FLG_OPEN, &bch->Flags);
+		if (test_bit(FLG_ACTIVE, &bch->Flags)) {
+			spin_lock_irqsave(ich->is->hwlock, flags);
+			mISDN_freebchannel(bch);
+			modeisar(ich, ISDN_P_NONE);
+			spin_unlock_irqrestore(ich->is->hwlock, flags);
+		} else {
+			skb_queue_purge(&bch->rqueue);
+			bch->rcount = 0;
+		}
+		ch->protocol = ISDN_P_NONE;
+		ch->peer = NULL;
+		module_put(ich->is->owner);
+		ret = 0;
+		break;
+	case CONTROL_CHANNEL:
+		ret = channel_bctrl(bch, arg);
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x)\n",
+			ich->is->name, __func__, cmd);
+	}
+	return ret;
+}
+
+static void
+free_isar(struct isar_hw *isar)
+{
+	modeisar(&isar->ch[0], ISDN_P_NONE);
+	modeisar(&isar->ch[1], ISDN_P_NONE);
+	del_timer(&isar->ch[0].ftimer);
+	del_timer(&isar->ch[1].ftimer);
+	test_and_clear_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
+	test_and_clear_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
+}
+
+static int
+init_isar(struct isar_hw *isar)
+{
+	int	cnt = 3;
+
+	while (cnt--) {
+		isar->version = ISARVersion(isar);
+		if (isar->ch[0].bch.debug & DEBUG_HW)
+			pr_notice("%s: Testing version %d (%d time)\n",
+				isar->name, isar->version, 3 - cnt);
+		if (isar->version == 1)
+			break;
+		isar->ctrl(isar->hw, HW_RESET_REQ, 0);
+	}
+	if (isar->version != 1)
+		return -EINVAL;
+	isar->ch[0].ftimer.function = &ftimer_handler;
+	isar->ch[0].ftimer.data = (long)&isar->ch[0];
+	init_timer(&isar->ch[0].ftimer);
+	test_and_set_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
+	isar->ch[1].ftimer.function = &ftimer_handler;
+	isar->ch[1].ftimer.data = (long)&isar->ch[1];
+	init_timer(&isar->ch[1].ftimer);
+	test_and_set_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
+	return 0;
+}
+
+static int
+isar_open(struct isar_hw *isar, struct channel_req *rq)
+{
+	struct bchannel		*bch;
+
+	if (rq->adr.channel > 2)
+		return -EINVAL;
+	if (rq->protocol == ISDN_P_NONE)
+		return -EINVAL;
+	bch = &isar->ch[rq->adr.channel - 1].bch;
+	if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+		return -EBUSY; /* b-channel can be only open once */
+	test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
+	bch->ch.protocol = rq->protocol;
+	rq->ch = &bch->ch;
+	return 0;
+}
+
+u32
+mISDNisar_init(struct isar_hw *isar, void *hw)
+{
+	u32 ret, i;
+
+	isar->hw = hw;
+	for (i = 0; i < 2; i++) {
+		isar->ch[i].bch.nr = i + 1;
+		mISDN_initbchannel(&isar->ch[i].bch, MAX_DATA_MEM);
+		isar->ch[i].bch.ch.nr = i + 1;
+		isar->ch[i].bch.ch.send = &isar_l2l1;
+		isar->ch[i].bch.ch.ctrl = isar_bctrl;
+		isar->ch[i].bch.hw = hw;
+		isar->ch[i].is = isar;
+	}
+
+	isar->init = &init_isar;
+	isar->release = &free_isar;
+	isar->firmware = &load_firmware;
+	isar->open = &isar_open;
+
+	ret =	(1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_L2DTMF & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_MODEM_ASYNC & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_T30_FAX & ISDN_P_B_MASK));
+
+	return ret;
+}
+EXPORT_SYMBOL(mISDNisar_init);
+
+static int isar_mod_init(void)
+{
+	pr_notice("mISDN: ISAR driver Rev. %s\n", ISAR_REV);
+	return 0;
+}
+
+static void isar_mod_cleanup(void)
+{
+	pr_notice("mISDN: ISAR module unloaded\n");
+}
+module_init(isar_mod_init);
+module_exit(isar_mod_cleanup);

drivers/isdn/hardware/mISDN/netjet.c

@@ -0,0 +1,1156 @@
+/*
+ * NETJet mISDN driver
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include "ipac.h"
+#include "iohelper.h"
+#include "netjet.h"
+#include <linux/isdn/hdlc.h>
+
+#define NETJET_REV	"2.0"
+
+enum nj_types {
+	NETJET_S_TJ300,
+	NETJET_S_TJ320,
+	ENTERNOW__TJ320,
+};
+
+struct tiger_dma {
+	size_t		size;
+	u32		*start;
+	int		idx;
+	u32		dmastart;
+	u32		dmairq;
+	u32		dmaend;
+	u32		dmacur;
+};
+
+struct tiger_hw;
+
+struct tiger_ch {
+	struct bchannel		bch;
+	struct tiger_hw		*nj;
+	int			idx;
+	int			free;
+	int			lastrx;
+	u16			rxstate;
+	u16			txstate;
+	struct isdnhdlc_vars	hsend;
+	struct isdnhdlc_vars	hrecv;
+	u8			*hsbuf;
+	u8			*hrbuf;
+};
+
+#define TX_INIT		0x0001
+#define TX_IDLE		0x0002
+#define TX_RUN		0x0004
+#define TX_UNDERRUN	0x0100
+#define RX_OVERRUN	0x0100
+
+#define LOG_SIZE	64
+
+struct tiger_hw {
+	struct list_head	list;
+	struct pci_dev		*pdev;
+	char			name[MISDN_MAX_IDLEN];
+	enum nj_types		typ;
+	int			irq;
+	u32			irqcnt;
+	u32			base;
+	size_t			base_s;
+	dma_addr_t		dma;
+	void			*dma_p;
+	spinlock_t		lock;	/* lock HW */
+	struct isac_hw		isac;
+	struct tiger_dma	send;
+	struct tiger_dma	recv;
+	struct tiger_ch		bc[2];
+	u8			ctrlreg;
+	u8			dmactrl;
+	u8			auxd;
+	u8			last_is0;
+	u8			irqmask0;
+	char			log[LOG_SIZE];
+};
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+static u32 debug;
+static int nj_cnt;
+
+static void
+_set_debug(struct tiger_hw *card)
+{
+	card->isac.dch.debug = debug;
+	card->bc[0].bch.debug = debug;
+	card->bc[1].bch.debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+	int ret;
+	struct tiger_hw *card;
+
+	ret = param_set_uint(val, kp);
+	if (!ret) {
+		read_lock(&card_lock);
+		list_for_each_entry(card, &Cards, list)
+			_set_debug(card);
+		read_unlock(&card_lock);
+	}
+	return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(NETJET_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Netjet debug mask");
+
+static void
+nj_disable_hwirq(struct tiger_hw *card)
+{
+	outb(0, card->base + NJ_IRQMASK0);
+	outb(0, card->base + NJ_IRQMASK1);
+}
+
+
+static u8
+ReadISAC_nj(void *p, u8 offset)
+{
+	struct tiger_hw *card = p;
+	u8 ret;
+
+	card->auxd &= 0xfc;
+	card->auxd |= (offset >> 4) & 3;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	ret = inb(card->base + NJ_ISAC_OFF + ((offset & 0x0f) << 2));
+	return ret;
+}
+
+static void
+WriteISAC_nj(void *p, u8 offset, u8 value)
+{
+	struct tiger_hw *card = p;
+
+	card->auxd &= 0xfc;
+	card->auxd |= (offset >> 4) & 3;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	outb(value, card->base + NJ_ISAC_OFF + ((offset & 0x0f) << 2));
+}
+
+static void
+ReadFiFoISAC_nj(void *p, u8 offset, u8 *data, int size)
+{
+	struct tiger_hw *card = p;
+
+	card->auxd &= 0xfc;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	insb(card->base + NJ_ISAC_OFF, data, size);
+}
+
+static void
+WriteFiFoISAC_nj(void *p, u8 offset, u8 *data, int size)
+{
+	struct tiger_hw *card = p;
+
+	card->auxd &= 0xfc;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	outsb(card->base + NJ_ISAC_OFF, data, size);
+}
+
+static void
+fill_mem(struct tiger_ch *bc, u32 idx, u32 cnt, u32 fill)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	u32 mask = 0xff, val;
+
+	pr_debug("%s: B%1d fill %02x len %d idx %d/%d\n", card->name,
+		bc->bch.nr, fill, cnt, idx, card->send.idx);
+	if (bc->bch.nr & 2) {
+		fill  <<= 8;
+		mask <<= 8;
+	}
+	mask ^= 0xffffffff;
+	while (cnt--) {
+		val = card->send.start[idx];
+		val &= mask;
+		val |= fill;
+		card->send.start[idx++] = val;
+		if (idx >= card->send.size)
+			idx = 0;
+	}
+}
+
+static int
+mode_tiger(struct tiger_ch *bc, u32 protocol)
+{
+	struct tiger_hw *card = bc->bch.hw;
+
+	pr_debug("%s: B%1d protocol %x-->%x\n", card->name,
+		bc->bch.nr, bc->bch.state, protocol);
+	switch (protocol) {
+	case ISDN_P_NONE:
+		if (bc->bch.state == ISDN_P_NONE)
+			break;
+		fill_mem(bc, 0, card->send.size, 0xff);
+		bc->bch.state = protocol;
+		/* only stop dma and interrupts if both channels NULL */
+		if ((card->bc[0].bch.state == ISDN_P_NONE) &&
+		    (card->bc[1].bch.state == ISDN_P_NONE)) {
+			card->dmactrl = 0;
+			outb(card->dmactrl, card->base + NJ_DMACTRL);
+			outb(0, card->base + NJ_IRQMASK0);
+		}
+		test_and_clear_bit(FLG_HDLC, &bc->bch.Flags);
+		test_and_clear_bit(FLG_TRANSPARENT, &bc->bch.Flags);
+		bc->txstate = 0;
+		bc->rxstate = 0;
+		bc->lastrx = -1;
+		break;
+	case ISDN_P_B_RAW:
+		test_and_set_bit(FLG_TRANSPARENT, &bc->bch.Flags);
+		bc->bch.state = protocol;
+		bc->idx = 0;
+		bc->free = card->send.size/2;
+		bc->rxstate = 0;
+		bc->txstate = TX_INIT | TX_IDLE;
+		bc->lastrx = -1;
+		if (!card->dmactrl) {
+			card->dmactrl = 1;
+			outb(card->dmactrl, card->base + NJ_DMACTRL);
+			outb(0x0f, card->base + NJ_IRQMASK0);
+		}
+		break;
+	case ISDN_P_B_HDLC:
+		test_and_set_bit(FLG_HDLC, &bc->bch.Flags);
+		bc->bch.state = protocol;
+		bc->idx = 0;
+		bc->free = card->send.size/2;
+		bc->rxstate = 0;
+		bc->txstate = TX_INIT | TX_IDLE;
+		isdnhdlc_rcv_init(&bc->hrecv, 0);
+		isdnhdlc_out_init(&bc->hsend, 0);
+		bc->lastrx = -1;
+		if (!card->dmactrl) {
+			card->dmactrl = 1;
+			outb(card->dmactrl, card->base + NJ_DMACTRL);
+			outb(0x0f, card->base + NJ_IRQMASK0);
+		}
+		break;
+	default:
+		pr_info("%s: %s protocol %x not handled\n", card->name,
+			__func__, protocol);
+		return -ENOPROTOOPT;
+	}
+	card->send.dmacur = inl(card->base + NJ_DMA_READ_ADR);
+	card->recv.dmacur = inl(card->base + NJ_DMA_WRITE_ADR);
+	card->send.idx = (card->send.dmacur - card->send.dmastart) >> 2;
+	card->recv.idx = (card->recv.dmacur - card->recv.dmastart) >> 2;
+	pr_debug("%s: %s ctrl %x irq  %02x/%02x idx %d/%d\n",
+		card->name, __func__,
+		inb(card->base + NJ_DMACTRL),
+		inb(card->base + NJ_IRQMASK0),
+		inb(card->base + NJ_IRQSTAT0),
+		card->send.idx,
+		card->recv.idx);
+	return 0;
+}
+
+static void
+nj_reset(struct tiger_hw *card)
+{
+	outb(0xff, card->base + NJ_CTRL); /* Reset On */
+	mdelay(1);
+
+	/* now edge triggered for TJ320 GE 13/07/00 */
+	/* see comment in IRQ function */
+	if (card->typ == NETJET_S_TJ320) /* TJ320 */
+		card->ctrlreg = 0x40;  /* Reset Off and status read clear */
+	else
+		card->ctrlreg = 0x00;  /* Reset Off and status read clear */
+	outb(card->ctrlreg, card->base + NJ_CTRL);
+	mdelay(10);
+
+	/* configure AUX pins (all output except ISAC IRQ pin) */
+	card->auxd = 0;
+	card->dmactrl = 0;
+	outb(~NJ_ISACIRQ, card->base + NJ_AUXCTRL);
+	outb(NJ_ISACIRQ,  card->base + NJ_IRQMASK1);
+	outb(card->auxd, card->base + NJ_AUXDATA);
+}
+
+static int
+inittiger(struct tiger_hw *card)
+{
+	int i;
+
+	card->dma_p = pci_alloc_consistent(card->pdev, NJ_DMA_SIZE,
+			&card->dma);
+	if (!card->dma_p) {
+		pr_info("%s: No DMA memory\n", card->name);
+		return -ENOMEM;
+	}
+	if ((u64)card->dma > 0xffffffff) {
+		pr_info("%s: DMA outside 32 bit\n", card->name);
+		return -ENOMEM;
+	}
+	for (i = 0; i < 2; i++) {
+		card->bc[i].hsbuf = kmalloc(NJ_DMA_TXSIZE, GFP_KERNEL);
+		if (!card->bc[i].hsbuf) {
+			pr_info("%s: no B%d send buffer\n", card->name, i + 1);
+			return -ENOMEM;
+		}
+		card->bc[i].hrbuf = kmalloc(NJ_DMA_RXSIZE, GFP_KERNEL);
+		if (!card->bc[i].hrbuf) {
+			pr_info("%s: no B%d recv buffer\n", card->name, i + 1);
+			return -ENOMEM;
+		}
+	}
+	memset(card->dma_p, 0xff, NJ_DMA_SIZE);
+
+	card->send.start = card->dma_p;
+	card->send.dmastart = (u32)card->dma;
+	card->send.dmaend = card->send.dmastart +
+		(4 * (NJ_DMA_TXSIZE - 1));
+	card->send.dmairq = card->send.dmastart +
+		(4 * ((NJ_DMA_TXSIZE / 2) - 1));
+	card->send.size = NJ_DMA_TXSIZE;
+
+	if (debug & DEBUG_HW)
+		pr_notice("%s: send buffer phy %#x - %#x - %#x  virt %p"
+			" size %zu u32\n", card->name,
+			card->send.dmastart, card->send.dmairq,
+			card->send.dmaend, card->send.start, card->send.size);
+
+	outl(card->send.dmastart, card->base + NJ_DMA_READ_START);
+	outl(card->send.dmairq, card->base + NJ_DMA_READ_IRQ);
+	outl(card->send.dmaend, card->base + NJ_DMA_READ_END);
+
+	card->recv.start = card->dma_p + (NJ_DMA_SIZE / 2);
+	card->recv.dmastart = (u32)card->dma  + (NJ_DMA_SIZE / 2);
+	card->recv.dmaend = card->recv.dmastart +
+		(4 * (NJ_DMA_RXSIZE - 1));
+	card->recv.dmairq = card->recv.dmastart +
+		(4 * ((NJ_DMA_RXSIZE / 2) - 1));
+	card->recv.size = NJ_DMA_RXSIZE;
+
+	if (debug & DEBUG_HW)
+		pr_notice("%s: recv buffer phy %#x - %#x - %#x  virt %p"
+			" size %zu u32\n", card->name,
+			card->recv.dmastart, card->recv.dmairq,
+			card->recv.dmaend, card->recv.start, card->recv.size);
+
+	outl(card->recv.dmastart, card->base + NJ_DMA_WRITE_START);
+	outl(card->recv.dmairq, card->base + NJ_DMA_WRITE_IRQ);
+	outl(card->recv.dmaend, card->base + NJ_DMA_WRITE_END);
+	return 0;
+}
+
+static void
+read_dma(struct tiger_ch *bc, u32 idx, int cnt)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	int i, stat;
+	u32 val;
+	u8 *p, *pn;
+
+	if (bc->lastrx == idx) {
+		bc->rxstate |= RX_OVERRUN;
+		pr_info("%s: B%1d overrun at idx %d\n", card->name,
+			bc->bch.nr, idx);
+	}
+	bc->lastrx = idx;
+	if (!bc->bch.rx_skb) {
+		bc->bch.rx_skb = mI_alloc_skb(bc->bch.maxlen, GFP_ATOMIC);
+		if (!bc->bch.rx_skb) {
+			pr_info("%s: B%1d receive out of memory\n",
+				card->name, bc->bch.nr);
+			return;
+		}
+	}
+
+	if (test_bit(FLG_TRANSPARENT, &bc->bch.Flags)) {
+		if ((bc->bch.rx_skb->len + cnt) > bc->bch.maxlen) {
+			pr_debug("%s: B%1d overrun %d\n", card->name,
+				bc->bch.nr, bc->bch.rx_skb->len + cnt);
+			skb_trim(bc->bch.rx_skb, 0);
+			return;
+		}
+		p = skb_put(bc->bch.rx_skb, cnt);
+	} else
+		p = bc->hrbuf;
+
+	for (i = 0; i < cnt; i++) {
+		val = card->recv.start[idx++];
+		if (bc->bch.nr & 2)
+			val >>= 8;
+		if (idx >= card->recv.size)
+			idx = 0;
+		p[i] = val & 0xff;
+	}
+	pn = bc->hrbuf;
+next_frame:
+	if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+		stat = isdnhdlc_decode(&bc->hrecv, pn, cnt, &i,
+			bc->bch.rx_skb->data, bc->bch.maxlen);
+		if (stat > 0) /* valid frame received */ 
+			p = skb_put(bc->bch.rx_skb, stat);
+		else if (stat == -HDLC_CRC_ERROR)
+			pr_info("%s: B%1d receive frame CRC error\n",
+				card->name, bc->bch.nr);
+		else if (stat == -HDLC_FRAMING_ERROR)
+			pr_info("%s: B%1d receive framing error\n",
+				card->name, bc->bch.nr);
+		else if (stat == -HDLC_LENGTH_ERROR)
+			pr_info("%s: B%1d receive frame too long (> %d)\n",
+				card->name, bc->bch.nr, bc->bch.maxlen);
+	} else
+		stat = cnt;	
+
+	if (stat > 0) {
+		if (debug & DEBUG_HW_BFIFO) {
+			snprintf(card->log, LOG_SIZE, "B%1d-recv %s %d ",
+				bc->bch.nr, card->name, stat);
+			print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET,
+				p, stat);
+		}
+		recv_Bchannel(&bc->bch, 0);
+	}
+	if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+		pn += i;
+		cnt -= i;
+		if (!bc->bch.rx_skb) {
+			bc->bch.rx_skb = mI_alloc_skb(bc->bch.maxlen,
+				GFP_ATOMIC);
+			if (!bc->bch.rx_skb) {
+				pr_info("%s: B%1d receive out of memory\n",
+					card->name, bc->bch.nr);
+				return;
+			}
+		}
+		if (cnt > 0)
+			goto next_frame;
+	}
+}
+
+static void
+recv_tiger(struct tiger_hw *card, u8 irq_stat)
+{
+	u32 idx;
+	int cnt = card->recv.size / 2;
+
+	/* Note receive is via the WRITE DMA channel */
+	card->last_is0 &= ~NJ_IRQM0_WR_MASK;
+	card->last_is0 |= (irq_stat & NJ_IRQM0_WR_MASK);
+
+	if (irq_stat & NJ_IRQM0_WR_END)
+		idx = cnt - 1;
+	else
+		idx = card->recv.size - 1;
+
+	if (test_bit(FLG_ACTIVE, &card->bc[0].bch.Flags))
+		read_dma(&card->bc[0], idx, cnt);
+	if (test_bit(FLG_ACTIVE, &card->bc[1].bch.Flags))
+		read_dma(&card->bc[1], idx, cnt);
+}
+
+/* sync with current DMA address at start or after exception */
+static void
+resync(struct tiger_ch *bc, struct tiger_hw *card)
+{
+	card->send.dmacur = inl(card->base | NJ_DMA_READ_ADR);
+	card->send.idx = (card->send.dmacur - card->send.dmastart) >> 2;
+	if (bc->free > card->send.size / 2)
+		bc->free = card->send.size / 2;
+	/* currently we simple sync to the next complete free area
+	 * this hast the advantage that we have always maximum time to
+	 * handle TX irq
+	 */
+	if (card->send.idx < ((card->send.size / 2) - 1))
+		bc->idx = (card->recv.size / 2) - 1;
+	else
+		bc->idx = card->recv.size - 1;
+	bc->txstate = TX_RUN;
+	pr_debug("%s: %s B%1d free %d idx %d/%d\n", card->name,
+		__func__, bc->bch.nr, bc->free, bc->idx, card->send.idx);
+}
+
+static int bc_next_frame(struct tiger_ch *);
+
+static void
+fill_hdlc_flag(struct tiger_ch *bc)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	int count, i;
+	u32 m, v;
+	u8  *p;
+
+	if (bc->free == 0)
+		return;
+	pr_debug("%s: %s B%1d %d state %x idx %d/%d\n", card->name,
+		__func__, bc->bch.nr, bc->free, bc->txstate,
+		bc->idx, card->send.idx);
+	if (bc->txstate & (TX_IDLE | TX_INIT | TX_UNDERRUN))
+		resync(bc, card);
+	count = isdnhdlc_encode(&bc->hsend, NULL, 0, &i,
+			bc->hsbuf, bc->free);
+	pr_debug("%s: B%1d hdlc encoded %d flags\n", card->name,
+			bc->bch.nr, count);
+	bc->free -= count;
+	p = bc->hsbuf;
+	m = (bc->bch.nr & 1) ? 0xffffff00 : 0xffff00ff;
+	for (i = 0; i < count; i++) {
+		if (bc->idx >= card->send.size)
+			bc->idx = 0;
+		v = card->send.start[bc->idx];
+		v &= m;
+		v |= (bc->bch.nr & 1) ? (u32)(p[i]) : ((u32)(p[i])) << 8;
+		card->send.start[bc->idx++] = v;
+	}
+	if (debug & DEBUG_HW_BFIFO) {
+		snprintf(card->log, LOG_SIZE, "B%1d-send %s %d ",
+			bc->bch.nr, card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+}
+
+static void
+fill_dma(struct tiger_ch *bc)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	int count, i;
+	u32 m, v;
+	u8  *p;
+
+	if (bc->free == 0)
+		return;
+	count = bc->bch.tx_skb->len - bc->bch.tx_idx;
+	if (count <= 0)
+		return;
+	pr_debug("%s: %s B%1d %d/%d/%d/%d state %x idx %d/%d\n", card->name,
+		__func__, bc->bch.nr, count, bc->free, bc->bch.tx_idx,
+		bc->bch.tx_skb->len, bc->txstate, bc->idx, card->send.idx);
+	if (bc->txstate & (TX_IDLE | TX_INIT | TX_UNDERRUN))
+		resync(bc, card);
+	p = bc->bch.tx_skb->data + bc->bch.tx_idx;
+	if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+		count = isdnhdlc_encode(&bc->hsend, p, count, &i,
+			bc->hsbuf, bc->free);
+		pr_debug("%s: B%1d hdlc encoded %d in %d\n", card->name,
+			bc->bch.nr, i, count);
+		bc->bch.tx_idx += i;
+		bc->free -= count;
+		p = bc->hsbuf;
+	} else {
+		if (count > bc->free)
+			count = bc->free;
+		bc->bch.tx_idx += count;
+		bc->free -= count;
+	}
+	m = (bc->bch.nr & 1) ? 0xffffff00 : 0xffff00ff;
+	for (i = 0; i < count; i++) {
+		if (bc->idx >= card->send.size)
+			bc->idx = 0;
+		v = card->send.start[bc->idx];
+		v &= m;
+		v |= (bc->bch.nr & 1) ? (u32)(p[i]) : ((u32)(p[i])) << 8;
+		card->send.start[bc->idx++] = v;
+	}
+	if (debug & DEBUG_HW_BFIFO) {
+		snprintf(card->log, LOG_SIZE, "B%1d-send %s %d ",
+			bc->bch.nr, card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+	if (bc->free)
+		bc_next_frame(bc);
+}
+
+
+static int
+bc_next_frame(struct tiger_ch *bc)
+{
+	if (bc->bch.tx_skb && bc->bch.tx_idx < bc->bch.tx_skb->len)
+		fill_dma(bc);
+	else {
+		if (bc->bch.tx_skb) {
+			/* send confirm, on trans, free on hdlc. */
+			if (test_bit(FLG_TRANSPARENT, &bc->bch.Flags))
+				confirm_Bsend(&bc->bch);
+			dev_kfree_skb(bc->bch.tx_skb);
+		}
+		if (get_next_bframe(&bc->bch))
+			fill_dma(bc);
+		else
+			return 0;
+	}
+	return 1;
+}
+
+static void
+send_tiger_bc(struct tiger_hw *card, struct tiger_ch *bc)
+{
+	int ret;
+
+	bc->free += card->send.size / 2;
+	if (bc->free >= card->send.size) {
+		if (!(bc->txstate & (TX_UNDERRUN | TX_INIT))) {
+			pr_info("%s: B%1d TX underrun state %x\n", card->name,
+				bc->bch.nr, bc->txstate);
+			bc->txstate |= TX_UNDERRUN;
+		}
+		bc->free = card->send.size;
+	}
+	ret = bc_next_frame(bc);
+	if (!ret) {
+		if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+			fill_hdlc_flag(bc);
+			return;
+		}
+		pr_debug("%s: B%1d TX no data free %d idx %d/%d\n", card->name,
+			bc->bch.nr, bc->free, bc->idx, card->send.idx);
+		if (!(bc->txstate & (TX_IDLE | TX_INIT))) {
+			fill_mem(bc, bc->idx, bc->free, 0xff);
+			if (bc->free == card->send.size)
+				bc->txstate |= TX_IDLE;
+		}
+	}
+}
+
+static void
+send_tiger(struct tiger_hw *card, u8 irq_stat)
+{
+	int i;
+
+	/* Note send is via the READ DMA channel */
+	if ((irq_stat & card->last_is0) & NJ_IRQM0_RD_MASK) {
+		pr_info("%s: tiger warn write double dma %x/%x\n",
+			card->name, irq_stat, card->last_is0);
+		return;
+	} else {
+		card->last_is0 &= ~NJ_IRQM0_RD_MASK;
+		card->last_is0 |= (irq_stat & NJ_IRQM0_RD_MASK);
+	}
+	for (i = 0; i < 2; i++) {
+		if (test_bit(FLG_ACTIVE, &card->bc[i].bch.Flags))
+			send_tiger_bc(card, &card->bc[i]);
+	}
+}
+
+static irqreturn_t
+nj_irq(int intno, void *dev_id)
+{
+	struct tiger_hw *card = dev_id;
+	u8 val, s1val, s0val;
+
+	spin_lock(&card->lock);
+	s0val = inb(card->base | NJ_IRQSTAT0);
+	s1val = inb(card->base | NJ_IRQSTAT1);
+	if ((s1val & NJ_ISACIRQ) && (s0val == 0)) {
+		/* shared IRQ */
+		spin_unlock(&card->lock);
+		return IRQ_NONE;
+	}
+	pr_debug("%s: IRQSTAT0 %02x IRQSTAT1 %02x\n", card->name, s0val, s1val);
+	card->irqcnt++;
+	if (!(s1val & NJ_ISACIRQ)) {
+		val = ReadISAC_nj(card, ISAC_ISTA);
+		if (val)
+			mISDNisac_irq(&card->isac, val);
+	}
+
+	if (s0val)
+		/* write to clear */
+		outb(s0val, card->base | NJ_IRQSTAT0);
+	else
+		goto end;
+	s1val = s0val;
+	/* set bits in sval to indicate which page is free */
+	card->recv.dmacur = inl(card->base | NJ_DMA_WRITE_ADR);
+	card->recv.idx = (card->recv.dmacur - card->recv.dmastart) >> 2;
+	if (card->recv.dmacur < card->recv.dmairq)
+		s0val = 0x08;	/* the 2nd write area is free */
+	else
+		s0val = 0x04;	/* the 1st write area is free */
+
+	card->send.dmacur = inl(card->base | NJ_DMA_READ_ADR);
+	card->send.idx = (card->send.dmacur - card->send.dmastart) >> 2;
+	if (card->send.dmacur < card->send.dmairq)
+		s0val |= 0x02;	/* the 2nd read area is free */
+	else
+		s0val |= 0x01;	/* the 1st read area is free */
+
+	pr_debug("%s: DMA Status %02x/%02x/%02x %d/%d\n", card->name,
+		s1val, s0val, card->last_is0,
+		card->recv.idx, card->send.idx);
+	/* test if we have a DMA interrupt */
+	if (s0val != card->last_is0) {
+		if ((s0val & NJ_IRQM0_RD_MASK) !=
+		    (card->last_is0 & NJ_IRQM0_RD_MASK))
+			/* got a write dma int */
+			send_tiger(card, s0val);
+		if ((s0val & NJ_IRQM0_WR_MASK) !=
+		    (card->last_is0 & NJ_IRQM0_WR_MASK))
+			/* got a read dma int */
+			recv_tiger(card, s0val);
+	}
+end:
+	spin_unlock(&card->lock);
+	return IRQ_HANDLED;
+}
+
+static int
+nj_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	int ret = -EINVAL;
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct tiger_ch *bc = container_of(bch, struct tiger_ch, bch);
+	struct tiger_hw *card = bch->hw;
+	struct mISDNhead *hh = mISDN_HEAD_P(skb);
+	u32 id;
+	u_long flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		ret = bchannel_senddata(bch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			fill_dma(bc);
+			ret = 0;
+			spin_unlock_irqrestore(&card->lock, flags);
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(&card->lock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
+			ret = mode_tiger(bc, ch->protocol);
+		else
+			ret = 0;
+		spin_unlock_irqrestore(&card->lock, flags);
+		if (!ret)
+			_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+				NULL, GFP_KERNEL);
+		break;
+	case PH_DEACTIVATE_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		mISDN_clear_bchannel(bch);
+		mode_tiger(bc, ISDN_P_NONE);
+		spin_unlock_irqrestore(&card->lock, flags);
+		_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
+			NULL, GFP_KERNEL);
+		ret = 0;
+		break;
+	}
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+channel_bctrl(struct tiger_ch *bc, struct mISDN_ctrl_req *cq)
+{
+	int ret = 0;
+	struct tiger_hw *card  = bc->bch.hw;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	/* Nothing implemented yet */
+	case MISDN_CTRL_FILL_EMPTY:
+	default:
+		pr_info("%s: %s unknown Op %x\n", card->name, __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+nj_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct tiger_ch *bc = container_of(bch, struct tiger_ch, bch);
+	struct tiger_hw *card  = bch->hw;
+	int ret = -EINVAL;
+	u_long flags;
+
+	pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
+	switch (cmd) {
+	case CLOSE_CHANNEL:
+		test_and_clear_bit(FLG_OPEN, &bch->Flags);
+		if (test_bit(FLG_ACTIVE, &bch->Flags)) {
+			spin_lock_irqsave(&card->lock, flags);
+			mISDN_freebchannel(bch);
+			test_and_clear_bit(FLG_TX_BUSY, &bch->Flags);
+			test_and_clear_bit(FLG_ACTIVE, &bch->Flags);
+			mode_tiger(bc, ISDN_P_NONE);
+			spin_unlock_irqrestore(&card->lock, flags);
+		}
+		ch->protocol = ISDN_P_NONE;
+		ch->peer = NULL;
+		module_put(THIS_MODULE);
+		ret = 0;
+		break;
+	case CONTROL_CHANNEL:
+		ret = channel_bctrl(bc, arg);
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x)\n", card->name, __func__, cmd);
+	}
+	return ret;
+}
+
+static int
+channel_ctrl(struct tiger_hw *card, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = MISDN_CTRL_LOOP;
+		break;
+	case MISDN_CTRL_LOOP:
+		/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
+		if (cq->channel < 0 || cq->channel > 3) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = card->isac.ctrl(&card->isac, HW_TESTLOOP, cq->channel);
+		break;
+	default:
+		pr_info("%s: %s unknown Op %x\n", card->name, __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+open_bchannel(struct tiger_hw *card, struct channel_req *rq)
+{
+	struct bchannel *bch;
+
+	if (rq->adr.channel > 2)
+		return -EINVAL;
+	if (rq->protocol == ISDN_P_NONE)
+		return -EINVAL;
+	bch = &card->bc[rq->adr.channel - 1].bch;
+	if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+		return -EBUSY; /* b-channel can be only open once */
+	test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
+	bch->ch.protocol = rq->protocol;
+	rq->ch = &bch->ch;
+	return 0;
+}
+
+/*
+ * device control function
+ */
+static int
+nj_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct mISDNdevice	*dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel		*dch = container_of(dev, struct dchannel, dev);
+	struct tiger_hw	*card = dch->hw;
+	struct channel_req	*rq;
+	int			err = 0;
+
+	pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
+	switch (cmd) {
+	case OPEN_CHANNEL:
+		rq = arg;
+		if (rq->protocol == ISDN_P_TE_S0)
+			err = card->isac.open(&card->isac, rq);
+		else
+			err = open_bchannel(card, rq);
+		if (err)
+			break;
+		if (!try_module_get(THIS_MODULE))
+			pr_info("%s: cannot get module\n", card->name);
+		break;
+	case CLOSE_CHANNEL:
+		pr_debug("%s: dev(%d) close from %p\n", card->name, dch->dev.id,
+			__builtin_return_address(0));
+		module_put(THIS_MODULE);
+		break;
+	case CONTROL_CHANNEL:
+		err = channel_ctrl(card, arg);
+		break;
+	default:
+		pr_debug("%s: %s unknown command %x\n",
+			card->name, __func__, cmd);
+		return -EINVAL;
+	}
+	return err;
+}
+
+static int
+nj_init_card(struct tiger_hw *card)
+{
+	u_long flags;
+	int ret;
+
+	spin_lock_irqsave(&card->lock, flags);
+	nj_disable_hwirq(card);
+	spin_unlock_irqrestore(&card->lock, flags);
+
+	card->irq = card->pdev->irq;
+	if (request_irq(card->irq, nj_irq, IRQF_SHARED, card->name, card)) {
+		pr_info("%s: couldn't get interrupt %d\n",
+			card->name, card->irq);
+		card->irq = -1;
+		return -EIO;
+	}
+
+	spin_lock_irqsave(&card->lock, flags);
+	nj_reset(card);
+	ret = card->isac.init(&card->isac);
+	if (ret)
+		goto error;
+	ret = inittiger(card);
+	if (ret)
+		goto error;
+	mode_tiger(&card->bc[0], ISDN_P_NONE);
+	mode_tiger(&card->bc[1], ISDN_P_NONE);
+error:
+	spin_unlock_irqrestore(&card->lock, flags);
+	return ret;
+}
+
+
+static void
+nj_release(struct tiger_hw *card)
+{
+	u_long flags;
+	int i;
+
+	if (card->base_s) {
+		spin_lock_irqsave(&card->lock, flags);
+		nj_disable_hwirq(card);
+		mode_tiger(&card->bc[0], ISDN_P_NONE);
+		mode_tiger(&card->bc[1], ISDN_P_NONE);
+		card->isac.release(&card->isac);
+		spin_unlock_irqrestore(&card->lock, flags);
+		release_region(card->base, card->base_s);
+		card->base_s = 0;
+	}
+	if (card->irq > 0)
+		free_irq(card->irq, card);
+	if (card->isac.dch.dev.dev.class)
+		mISDN_unregister_device(&card->isac.dch.dev);
+	
+	for (i = 0; i < 2; i++) {
+		mISDN_freebchannel(&card->bc[i].bch);
+		kfree(card->bc[i].hsbuf);
+		kfree(card->bc[i].hrbuf);
+	}
+	if (card->dma_p)
+		pci_free_consistent(card->pdev, NJ_DMA_SIZE,
+			card->dma_p, card->dma);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	pci_clear_master(card->pdev);
+	pci_disable_device(card->pdev);
+	pci_set_drvdata(card->pdev, NULL);
+	kfree(card);
+}
+
+
+static int
+nj_setup(struct tiger_hw *card)
+{
+	card->base = pci_resource_start(card->pdev, 0);
+	card->base_s = pci_resource_len(card->pdev, 0);
+	if (!request_region(card->base, card->base_s, card->name)) {
+		pr_info("%s: NETjet config port %#x-%#x already in use\n",
+			card->name, card->base,
+			(u32)(card->base + card->base_s - 1));
+		card->base_s = 0;
+		return -EIO;
+	}
+	ASSIGN_FUNC(nj, ISAC, card->isac);
+	return 0;
+}
+
+
+static int __devinit
+setup_instance(struct tiger_hw *card)
+{
+	int i, err;
+	u_long flags;
+
+	snprintf(card->name, MISDN_MAX_IDLEN - 1, "netjet.%d", nj_cnt + 1);
+	write_lock_irqsave(&card_lock, flags);
+	list_add_tail(&card->list, &Cards);
+	write_unlock_irqrestore(&card_lock, flags);
+
+	_set_debug(card);
+	card->isac.name = card->name;
+	spin_lock_init(&card->lock);
+	card->isac.hwlock = &card->lock;
+	mISDNisac_init(&card->isac, card);
+
+	card->isac.dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
+	card->isac.dch.dev.D.ctrl = nj_dctrl;
+	for (i = 0; i < 2; i++) {
+		card->bc[i].bch.nr = i + 1;
+		set_channelmap(i + 1, card->isac.dch.dev.channelmap);
+		mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM);
+		card->bc[i].bch.hw = card;
+		card->bc[i].bch.ch.send = nj_l2l1B;
+		card->bc[i].bch.ch.ctrl = nj_bctrl;
+		card->bc[i].bch.ch.nr = i + 1;
+		list_add(&card->bc[i].bch.ch.list,
+			&card->isac.dch.dev.bchannels);
+		card->bc[i].bch.hw = card;
+	}
+	err = nj_setup(card);
+	if (err)
+		goto error;
+	err = mISDN_register_device(&card->isac.dch.dev, &card->pdev->dev,
+		card->name);
+	if (err)
+		goto error;
+	err = nj_init_card(card);
+	if (!err)  {
+		nj_cnt++;
+		pr_notice("Netjet %d cards installed\n", nj_cnt);
+		return 0;
+	}
+error:
+	nj_release(card);
+	return err;
+}
+
+static int __devinit
+nj_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int err = -ENOMEM;
+	int cfg;
+	struct tiger_hw *card;
+
+	if (pdev->subsystem_vendor == 0x8086 &&
+	    pdev->subsystem_device == 0x0003) {
+		pr_notice("Netjet: Digium X100P/X101P not handled\n");
+		return -ENODEV;
+	}
+
+	if (pdev->subsystem_vendor == 0x55 &&
+	    pdev->subsystem_device == 0x02) {
+		pr_notice("Netjet: Enter!Now not handled yet\n");
+		return -ENODEV;
+	}
+
+	card = kzalloc(sizeof(struct tiger_hw), GFP_ATOMIC);
+	if (!card) {
+		pr_info("No kmem for Netjet\n");
+		return err;
+	}
+
+	card->pdev = pdev;
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		kfree(card);
+		return err;
+	}
+
+	printk(KERN_INFO "nj_probe(mISDN): found adapter at %s\n",
+		pci_name(pdev));
+
+	pci_set_master(pdev);
+
+	/* the TJ300 and TJ320 must be detected, the IRQ handling is different
+	 * unfortunately the chips use the same device ID, but the TJ320 has
+	 * the bit20 in status PCI cfg register set
+	 */
+	pci_read_config_dword(pdev, 0x04, &cfg);
+	if (cfg & 0x00100000)
+		card->typ = NETJET_S_TJ320;
+	else
+		card->typ = NETJET_S_TJ300;
+
+	card->base = pci_resource_start(pdev, 0);
+	card->irq = pdev->irq;
+	pci_set_drvdata(pdev, card);
+	err = setup_instance(card);
+	if (err)
+		pci_set_drvdata(pdev, NULL);
+
+	return err;
+}
+
+
+static void __devexit nj_remove(struct pci_dev *pdev)
+{
+	struct tiger_hw *card = pci_get_drvdata(pdev);
+
+	if (card)
+		nj_release(card);
+	else
+		pr_info("%s drvdata already removed\n", __func__);
+}
+
+/* We cannot select cards with PCI_SUB... IDs, since here are cards with
+ * SUB IDs set to PCI_ANY_ID, so we need to match all and reject
+ * known other cards which not work with this driver - see probe function */
+static struct pci_device_id nj_pci_ids[] __devinitdata = {
+	{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_300,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, nj_pci_ids);
+
+static struct pci_driver nj_driver = {
+	.name = "netjet",
+	.probe = nj_probe,
+	.remove = __devexit_p(nj_remove),
+	.id_table = nj_pci_ids,
+};
+
+static int __init nj_init(void)
+{
+	int err;
+
+	pr_notice("Netjet PCI driver Rev. %s\n", NETJET_REV);
+	err = pci_register_driver(&nj_driver);
+	return err;
+}
+
+static void __exit nj_cleanup(void)
+{
+	pci_unregister_driver(&nj_driver);
+}
+
+module_init(nj_init);
+module_exit(nj_cleanup);

drivers/isdn/hardware/mISDN/netjet.h

@@ -0,0 +1,58 @@
+/*
+ * NETjet common header file
+ *
+ * Author	Karsten Keil
+ *              based on work of Matt Henderson and Daniel Potts,
+ *              Traverse Technologies P/L www.traverse.com.au
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#define NJ_CTRL			0x00
+#define NJ_DMACTRL		0x01
+#define NJ_AUXCTRL		0x02
+#define NJ_AUXDATA		0x03
+#define NJ_IRQMASK0		0x04
+#define NJ_IRQMASK1		0x05
+#define NJ_IRQSTAT0		0x06
+#define NJ_IRQSTAT1		0x07
+#define NJ_DMA_READ_START	0x08
+#define NJ_DMA_READ_IRQ		0x0c
+#define NJ_DMA_READ_END		0x10
+#define NJ_DMA_READ_ADR		0x14
+#define NJ_DMA_WRITE_START	0x18
+#define NJ_DMA_WRITE_IRQ	0x1c
+#define NJ_DMA_WRITE_END	0x20
+#define NJ_DMA_WRITE_ADR	0x24
+#define NJ_PULSE_CNT		0x28
+
+#define NJ_ISAC_OFF		0xc0
+#define NJ_ISACIRQ		0x10
+
+#define NJ_IRQM0_RD_MASK	0x03
+#define NJ_IRQM0_RD_IRQ		0x01
+#define NJ_IRQM0_RD_END		0x02
+#define NJ_IRQM0_WR_MASK	0x0c
+#define NJ_IRQM0_WR_IRQ		0x04
+#define NJ_IRQM0_WR_END		0x08
+
+/* one page here is no need to be smaller */
+#define NJ_DMA_SIZE		4096
+/* 2 * 64 byte is a compromise between IRQ count and latency */
+#define NJ_DMA_RXSIZE		128  /* 2 * 64 */
+#define NJ_DMA_TXSIZE		128  /* 2 * 64 */
+

drivers/isdn/hardware/mISDN/speedfax.c

@@ -0,0 +1,526 @@
+/*
+ * speedfax.c	low level stuff for Sedlbauer Speedfax+ cards
+ *		based on the ISAR DSP
+ *		Thanks to Sedlbauer AG for informations and HW
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include <linux/firmware.h>
+#include "ipac.h"
+#include "isar.h"
+
+#define SPEEDFAX_REV	"2.0"
+
+#define PCI_SUBVENDOR_SPEEDFAX_PYRAMID	0x51
+#define PCI_SUBVENDOR_SPEEDFAX_PCI	0x54
+#define PCI_SUB_ID_SEDLBAUER		0x01
+
+#define SFAX_PCI_ADDR		0xc8
+#define SFAX_PCI_ISAC		0xd0
+#define SFAX_PCI_ISAR		0xe0
+
+/* TIGER 100 Registers */
+
+#define TIGER_RESET_ADDR	0x00
+#define TIGER_EXTERN_RESET_ON	0x01
+#define TIGER_EXTERN_RESET_OFF	0x00
+#define TIGER_AUX_CTRL		0x02
+#define TIGER_AUX_DATA		0x03
+#define TIGER_AUX_IRQMASK	0x05
+#define TIGER_AUX_STATUS	0x07
+
+/* Tiger AUX BITs */
+#define SFAX_AUX_IOMASK		0xdd	/* 1 and 5 are inputs */
+#define SFAX_ISAR_RESET_BIT_OFF 0x00
+#define SFAX_ISAR_RESET_BIT_ON	0x01
+#define SFAX_TIGER_IRQ_BIT	0x02
+#define SFAX_LED1_BIT		0x08
+#define SFAX_LED2_BIT		0x10
+
+#define SFAX_PCI_RESET_ON	(SFAX_ISAR_RESET_BIT_ON)
+#define SFAX_PCI_RESET_OFF	(SFAX_LED1_BIT | SFAX_LED2_BIT)
+
+static int sfax_cnt;
+static u32 debug;
+static u32 irqloops = 4;
+
+struct sfax_hw {
+	struct list_head	list;
+	struct pci_dev		*pdev;
+	char			name[MISDN_MAX_IDLEN];
+	u32			irq;
+	u32			irqcnt;
+	u32			cfg;
+	struct _ioport		p_isac;
+	struct _ioport		p_isar;
+	u8			aux_data;
+	spinlock_t		lock;	/* HW access lock */
+	struct isac_hw		isac;
+	struct isar_hw		isar;
+};
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+
+static void
+_set_debug(struct sfax_hw *card)
+{
+	card->isac.dch.debug = debug;
+	card->isar.ch[0].bch.debug = debug;
+	card->isar.ch[1].bch.debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+	int ret;
+	struct sfax_hw *card;
+
+	ret = param_set_uint(val, kp);
+	if (!ret) {
+		read_lock(&card_lock);
+		list_for_each_entry(card, &Cards, list)
+			_set_debug(card);
+		read_unlock(&card_lock);
+	}
+	return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(SPEEDFAX_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Speedfax debug mask");
+module_param(irqloops, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(irqloops, "Speedfax maximal irqloops (default 4)");
+
+IOFUNC_IND(ISAC, sfax_hw, p_isac)
+IOFUNC_IND(ISAR, sfax_hw, p_isar)
+
+static irqreturn_t
+speedfax_irq(int intno, void *dev_id)
+{
+	struct sfax_hw	*sf = dev_id;
+	u8 val;
+	int cnt = irqloops;
+
+	spin_lock(&sf->lock);
+	val = inb(sf->cfg + TIGER_AUX_STATUS);
+	if (val & SFAX_TIGER_IRQ_BIT) { /* for us or shared ? */
+		spin_unlock(&sf->lock);
+		return IRQ_NONE; /* shared */
+	}
+	sf->irqcnt++;
+	val = ReadISAR_IND(sf, ISAR_IRQBIT);
+Start_ISAR:
+	if (val & ISAR_IRQSTA)
+		mISDNisar_irq(&sf->isar);
+	val = ReadISAC_IND(sf, ISAC_ISTA);
+	if (val)
+		mISDNisac_irq(&sf->isac, val);
+	val = ReadISAR_IND(sf, ISAR_IRQBIT);
+	if ((val & ISAR_IRQSTA) && cnt--)
+		goto Start_ISAR;
+	if (cnt < irqloops)
+		pr_debug("%s: %d irqloops cpu%d\n", sf->name,
+			irqloops - cnt, smp_processor_id());
+	if (irqloops && !cnt)
+		pr_notice("%s: %d IRQ LOOP cpu%d\n", sf->name,
+			irqloops, smp_processor_id());
+	spin_unlock(&sf->lock);
+	return IRQ_HANDLED;
+}
+
+static void
+enable_hwirq(struct sfax_hw *sf)
+{
+	WriteISAC_IND(sf, ISAC_MASK, 0);
+	WriteISAR_IND(sf, ISAR_IRQBIT, ISAR_IRQMSK);
+	outb(SFAX_TIGER_IRQ_BIT, sf->cfg + TIGER_AUX_IRQMASK);
+}
+
+static void
+disable_hwirq(struct sfax_hw *sf)
+{
+	WriteISAC_IND(sf, ISAC_MASK, 0xFF);
+	WriteISAR_IND(sf, ISAR_IRQBIT, 0);
+	outb(0, sf->cfg + TIGER_AUX_IRQMASK);
+}
+
+static void
+reset_speedfax(struct sfax_hw *sf)
+{
+
+	pr_debug("%s: resetting card\n", sf->name);
+	outb(TIGER_EXTERN_RESET_ON, sf->cfg + TIGER_RESET_ADDR);
+	outb(SFAX_PCI_RESET_ON, sf->cfg + TIGER_AUX_DATA);
+	mdelay(1);
+	outb(TIGER_EXTERN_RESET_OFF, sf->cfg + TIGER_RESET_ADDR);
+	sf->aux_data = SFAX_PCI_RESET_OFF;
+	outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
+	mdelay(1);
+}
+
+static int
+sfax_ctrl(struct sfax_hw  *sf, u32 cmd, u_long arg)
+{
+	int ret = 0;
+
+	switch (cmd) {
+	case HW_RESET_REQ:
+		reset_speedfax(sf);
+		break;
+	case HW_ACTIVATE_IND:
+		if (arg & 1)
+			sf->aux_data &= ~SFAX_LED1_BIT;
+		if (arg & 2)
+			sf->aux_data &= ~SFAX_LED2_BIT;
+		outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
+		break;
+	case HW_DEACT_IND:
+		if (arg & 1)
+			sf->aux_data |= SFAX_LED1_BIT;
+		if (arg & 2)
+			sf->aux_data |= SFAX_LED2_BIT;
+		outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
+		break;
+	default:
+		pr_info("%s: %s unknown command %x %lx\n",
+			sf->name, __func__, cmd, arg);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+channel_ctrl(struct sfax_hw  *sf, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = MISDN_CTRL_LOOP;
+		break;
+	case MISDN_CTRL_LOOP:
+		/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
+		if (cq->channel < 0 || cq->channel > 3) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = sf->isac.ctrl(&sf->isac, HW_TESTLOOP, cq->channel);
+		break;
+	default:
+		pr_info("%s: unknown Op %x\n", sf->name, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+sfax_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct mISDNdevice	*dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel		*dch = container_of(dev, struct dchannel, dev);
+	struct sfax_hw		*sf = dch->hw;
+	struct channel_req	*rq;
+	int			err = 0;
+
+	pr_debug("%s: cmd:%x %p\n", sf->name, cmd, arg);
+	switch (cmd) {
+	case OPEN_CHANNEL:
+		rq = arg;
+		if (rq->protocol == ISDN_P_TE_S0)
+			err = sf->isac.open(&sf->isac, rq);
+		else
+			err = sf->isar.open(&sf->isar, rq);
+		if (err)
+			break;
+		if (!try_module_get(THIS_MODULE))
+			pr_info("%s: cannot get module\n", sf->name);
+		break;
+	case CLOSE_CHANNEL:
+		pr_debug("%s: dev(%d) close from %p\n", sf->name,
+			dch->dev.id, __builtin_return_address(0));
+		module_put(THIS_MODULE);
+		break;
+	case CONTROL_CHANNEL:
+		err = channel_ctrl(sf, arg);
+		break;
+	default:
+		pr_debug("%s: unknown command %x\n", sf->name, cmd);
+		return -EINVAL;
+	}
+	return err;
+}
+
+static int __devinit
+init_card(struct sfax_hw *sf)
+{
+	int	ret, cnt = 3;
+	u_long	flags;
+
+	ret = request_irq(sf->irq, speedfax_irq, IRQF_SHARED, sf->name, sf);
+	if (ret) {
+		pr_info("%s: couldn't get interrupt %d\n", sf->name, sf->irq);
+		return ret;
+	}
+	while (cnt--) {
+		spin_lock_irqsave(&sf->lock, flags);
+		ret = sf->isac.init(&sf->isac);
+		if (ret) {
+			spin_unlock_irqrestore(&sf->lock, flags);
+			pr_info("%s: ISAC init failed with %d\n",
+				sf->name, ret);
+			break;
+		}
+		enable_hwirq(sf);
+		/* RESET Receiver and Transmitter */
+		WriteISAC_IND(sf, ISAC_CMDR, 0x41);
+		spin_unlock_irqrestore(&sf->lock, flags);
+		msleep_interruptible(10);
+		if (debug & DEBUG_HW)
+			pr_notice("%s: IRQ %d count %d\n", sf->name,
+				sf->irq, sf->irqcnt);
+		if (!sf->irqcnt) {
+			pr_info("%s: IRQ(%d) got no requests during init %d\n",
+			       sf->name, sf->irq, 3 - cnt);
+		} else
+			return 0;
+	}
+	free_irq(sf->irq, sf);
+	return -EIO;
+}
+
+
+static int __devinit
+setup_speedfax(struct sfax_hw *sf)
+{
+	u_long flags;
+
+	if (!request_region(sf->cfg, 256, sf->name)) {
+		pr_info("mISDN: %s config port %x-%x already in use\n",
+		       sf->name, sf->cfg, sf->cfg + 255);
+		return -EIO;
+	}
+	outb(0xff, sf->cfg);
+	outb(0, sf->cfg);
+	outb(0xdd, sf->cfg + TIGER_AUX_CTRL);
+	outb(0, sf->cfg + TIGER_AUX_IRQMASK);
+
+	sf->isac.type = IPAC_TYPE_ISAC;
+	sf->p_isac.ale = sf->cfg + SFAX_PCI_ADDR;
+	sf->p_isac.port = sf->cfg + SFAX_PCI_ISAC;
+	sf->p_isar.ale = sf->cfg + SFAX_PCI_ADDR;
+	sf->p_isar.port = sf->cfg + SFAX_PCI_ISAR;
+	ASSIGN_FUNC(IND, ISAC, sf->isac);
+	ASSIGN_FUNC(IND, ISAR, sf->isar);
+	spin_lock_irqsave(&sf->lock, flags);
+	reset_speedfax(sf);
+	disable_hwirq(sf);
+	spin_unlock_irqrestore(&sf->lock, flags);
+	return 0;
+}
+
+static void
+release_card(struct sfax_hw *card) {
+	u_long	flags;
+
+	spin_lock_irqsave(&card->lock, flags);
+	disable_hwirq(card);
+	spin_unlock_irqrestore(&card->lock, flags);
+	card->isac.release(&card->isac);
+	free_irq(card->irq, card);
+	card->isar.release(&card->isar);
+	mISDN_unregister_device(&card->isac.dch.dev);
+	release_region(card->cfg, 256);
+	pci_disable_device(card->pdev);
+	pci_set_drvdata(card->pdev, NULL);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	kfree(card);
+	sfax_cnt--;
+}
+
+static int __devinit
+setup_instance(struct sfax_hw *card)
+{
+	const struct firmware *firmware;
+	int i, err;
+	u_long flags;
+
+	snprintf(card->name, MISDN_MAX_IDLEN - 1, "Speedfax.%d", sfax_cnt + 1);
+	write_lock_irqsave(&card_lock, flags);
+	list_add_tail(&card->list, &Cards);
+	write_unlock_irqrestore(&card_lock, flags);
+	_set_debug(card);
+	spin_lock_init(&card->lock);
+	card->isac.hwlock = &card->lock;
+	card->isar.hwlock = &card->lock;
+	card->isar.ctrl = (void *)&sfax_ctrl;
+	card->isac.name = card->name;
+	card->isar.name = card->name;
+	card->isar.owner = THIS_MODULE;
+
+	err = request_firmware(&firmware, "isdn/ISAR.BIN", &card->pdev->dev);
+	if (err < 0) {
+		pr_info("%s: firmware request failed %d\n",
+			card->name, err);
+		goto error_fw;
+	}
+	if (debug & DEBUG_HW)
+		pr_notice("%s: got firmware %zu bytes\n",
+			card->name, firmware->size);
+
+	mISDNisac_init(&card->isac, card);
+
+	card->isac.dch.dev.D.ctrl = sfax_dctrl;
+	card->isac.dch.dev.Bprotocols =
+		mISDNisar_init(&card->isar, card);
+	for (i = 0; i < 2; i++) {
+		set_channelmap(i + 1, card->isac.dch.dev.channelmap);
+		list_add(&card->isar.ch[i].bch.ch.list,
+			&card->isac.dch.dev.bchannels);
+	}
+
+	err = setup_speedfax(card);
+	if (err)
+		goto error_setup;
+	err = card->isar.init(&card->isar);
+	if (err)
+		goto error;
+	err = mISDN_register_device(&card->isac.dch.dev,
+		&card->pdev->dev, card->name);
+	if (err)
+		goto error;
+	err = init_card(card);
+	if (err)
+		goto error_init;
+	err = card->isar.firmware(&card->isar, firmware->data, firmware->size);
+	if (!err)  {
+		release_firmware(firmware);
+		sfax_cnt++;
+		pr_notice("SpeedFax %d cards installed\n", sfax_cnt);
+		return 0;
+	}
+	disable_hwirq(card);
+	free_irq(card->irq, card);
+error_init:
+	mISDN_unregister_device(&card->isac.dch.dev);
+error:
+	release_region(card->cfg, 256);
+error_setup:
+	card->isac.release(&card->isac);
+	card->isar.release(&card->isar);
+	release_firmware(firmware);
+error_fw:
+	pci_disable_device(card->pdev);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	kfree(card);
+	return err;
+}
+
+static int __devinit
+sfaxpci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int err = -ENOMEM;
+	struct sfax_hw *card = kzalloc(sizeof(struct sfax_hw), GFP_KERNEL);
+
+	if (!card) {
+		pr_info("No memory for Speedfax+ PCI\n");
+		return err;
+	}
+	card->pdev = pdev;
+	err = pci_enable_device(pdev);
+	if (err) {
+		kfree(card);
+		return err;
+	}
+
+	pr_notice("mISDN: Speedfax found adapter %s at %s\n",
+		(char *)ent->driver_data, pci_name(pdev));
+
+	card->cfg = pci_resource_start(pdev, 0);
+	card->irq = pdev->irq;
+	pci_set_drvdata(pdev, card);
+	err = setup_instance(card);
+	if (err)
+		pci_set_drvdata(pdev, NULL);
+	return err;
+}
+
+static void __devexit
+sfax_remove_pci(struct pci_dev *pdev)
+{
+	struct sfax_hw	*card = pci_get_drvdata(pdev);
+
+	if (card)
+		release_card(card);
+	else
+		pr_debug("%s: drvdata allready removed\n", __func__);
+}
+
+static struct pci_device_id sfaxpci_ids[] __devinitdata = {
+	{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
+	  PCI_SUBVENDOR_SPEEDFAX_PYRAMID, PCI_SUB_ID_SEDLBAUER,
+	  0, 0, (unsigned long) "Pyramid Speedfax + PCI"
+	},
+	{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
+	  PCI_SUBVENDOR_SPEEDFAX_PCI, PCI_SUB_ID_SEDLBAUER,
+	  0, 0, (unsigned long) "Sedlbauer Speedfax + PCI"
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, sfaxpci_ids);
+
+static struct pci_driver sfaxpci_driver = {
+	.name = "speedfax+ pci",
+	.probe = sfaxpci_probe,
+	.remove = __devexit_p(sfax_remove_pci),
+	.id_table = sfaxpci_ids,
+};
+
+static int __init
+Speedfax_init(void)
+{
+	int err;
+
+	pr_notice("Sedlbauer Speedfax+ Driver Rev. %s\n",
+		SPEEDFAX_REV);
+	err = pci_register_driver(&sfaxpci_driver);
+	return err;
+}
+
+static void __exit
+Speedfax_cleanup(void)
+{
+	pci_unregister_driver(&sfaxpci_driver);
+}
+
+module_init(Speedfax_init);
+module_exit(Speedfax_cleanup);

drivers/isdn/hardware/mISDN/w6692.c

@@ -0,0 +1,1440 @@
+/*
+ * w6692.c     mISDN driver for Winbond w6692 based cards
+ *
+ * Author      Karsten Keil <kkeil@suse.de>
+ *             based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include "w6692.h"
+
+#define W6692_REV	"2.0"
+
+#define DBUSY_TIMER_VALUE	80
+
+enum {
+	W6692_ASUS,
+	W6692_WINBOND,
+	W6692_USR
+};
+
+/* private data in the PCI devices list */
+struct w6692map {
+	u_int	subtype;
+	char	*name;
+};
+
+static const struct w6692map  w6692_map[] =
+{
+	{W6692_ASUS, "Dynalink/AsusCom IS64PH"},
+	{W6692_WINBOND, "Winbond W6692"},
+	{W6692_USR, "USR W6692"}
+};
+
+#ifndef PCI_VENDOR_ID_USR
+#define PCI_VENDOR_ID_USR	0x16ec
+#define PCI_DEVICE_ID_USR_6692	0x3409
+#endif
+
+struct w6692_ch {
+	struct bchannel		bch;
+	u32			addr;
+	struct timer_list	timer;
+	u8			b_mode;
+};
+
+struct w6692_hw {
+	struct list_head	list;
+	struct pci_dev		*pdev;
+	char			name[MISDN_MAX_IDLEN];
+	u32			irq;
+	u32			irqcnt;
+	u32			addr;
+	u32			fmask;	/* feature mask - bit set per card nr */
+	int			subtype;
+	spinlock_t		lock;	/* hw lock */
+	u8			imask;
+	u8			pctl;
+	u8			xaddr;
+	u8			xdata;
+	u8			state;
+	struct w6692_ch		bc[2];
+	struct dchannel		dch;
+	char			log[64];
+};
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+
+static int w6692_cnt;
+static int debug;
+static u32 led;
+static u32 pots;
+
+static void
+_set_debug(struct w6692_hw *card)
+{
+	card->dch.debug = debug;
+	card->bc[0].bch.debug = debug;
+	card->bc[1].bch.debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+	int ret;
+	struct w6692_hw *card;
+
+	ret = param_set_uint(val, kp);
+	if (!ret) {
+		read_lock(&card_lock);
+		list_for_each_entry(card, &Cards, list)
+			_set_debug(card);
+		read_unlock(&card_lock);
+	}
+	return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(W6692_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "W6692 debug mask");
+module_param(led, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)");
+module_param(pots, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)");
+
+static inline u8
+ReadW6692(struct w6692_hw *card, u8 offset)
+{
+	return inb(card->addr + offset);
+}
+
+static inline void
+WriteW6692(struct w6692_hw *card, u8 offset, u8 value)
+{
+	outb(value, card->addr + offset);
+}
+
+static inline u8
+ReadW6692B(struct w6692_ch *bc, u8 offset)
+{
+	return inb(bc->addr + offset);
+}
+
+static inline void
+WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value)
+{
+	outb(value, bc->addr + offset);
+}
+
+static void
+enable_hwirq(struct w6692_hw *card)
+{
+	WriteW6692(card, W_IMASK, card->imask);
+}
+
+static void
+disable_hwirq(struct w6692_hw *card)
+{
+	WriteW6692(card, W_IMASK, 0xff);
+}
+
+static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"};
+
+static void
+W6692Version(struct w6692_hw *card)
+{
+	int val;
+
+	val = ReadW6692(card, W_D_RBCH);
+	pr_notice("%s: Winbond W6692 version: %s\n", card->name,
+		W6692Ver[(val >> 6) & 3]);
+}
+
+static void
+w6692_led_handler(struct w6692_hw *card, int on)
+{
+	if ((!(card->fmask & led)) || card->subtype == W6692_USR)
+		return;
+	if (on) {
+		card->xdata &= 0xfb;	/*  LED ON */
+		WriteW6692(card, W_XDATA, card->xdata);
+	} else {
+		card->xdata |= 0x04;	/*  LED OFF */
+		WriteW6692(card, W_XDATA, card->xdata);
+	}
+}
+
+static void
+ph_command(struct w6692_hw *card, u8 cmd)
+{
+	pr_debug("%s: ph_command %x\n", card->name, cmd);
+	WriteW6692(card, W_CIX, cmd);
+}
+
+static void
+W6692_new_ph(struct w6692_hw *card)
+{
+	if (card->state == W_L1CMD_RST)
+		ph_command(card, W_L1CMD_DRC);
+	schedule_event(&card->dch, FLG_PHCHANGE);
+}
+
+static void
+W6692_ph_bh(struct dchannel *dch)
+{
+	struct w6692_hw *card = dch->hw;
+
+	switch (card->state) {
+	case W_L1CMD_RST:
+		dch->state = 0;
+		l1_event(dch->l1, HW_RESET_IND);
+		break;
+	case W_L1IND_CD:
+		dch->state = 3;
+		l1_event(dch->l1, HW_DEACT_CNF);
+		break;
+	case W_L1IND_DRD:
+		dch->state = 3;
+		l1_event(dch->l1, HW_DEACT_IND);
+		break;
+	case W_L1IND_CE:
+		dch->state = 4;
+		l1_event(dch->l1, HW_POWERUP_IND);
+		break;
+	case W_L1IND_LD:
+		if (dch->state <= 5) {
+			dch->state = 5;
+			l1_event(dch->l1, ANYSIGNAL);
+		} else {
+			dch->state = 8;
+			l1_event(dch->l1, LOSTFRAMING);
+		}
+		break;
+	case W_L1IND_ARD:
+		dch->state = 6;
+		l1_event(dch->l1, INFO2);
+		break;
+	case W_L1IND_AI8:
+		dch->state = 7;
+		l1_event(dch->l1, INFO4_P8);
+		break;
+	case W_L1IND_AI10:
+		dch->state = 7;
+		l1_event(dch->l1, INFO4_P10);
+		break;
+	default:
+		pr_debug("%s: TE unknown state %02x dch state %02x\n",
+			card->name, card->state, dch->state);
+		break;
+	}
+	pr_debug("%s: TE newstate %02x\n", card->name, dch->state);
+}
+
+static void
+W6692_empty_Dfifo(struct w6692_hw *card, int count)
+{
+	struct dchannel *dch = &card->dch;
+	u8 *ptr;
+
+	pr_debug("%s: empty_Dfifo %d\n", card->name, count);
+	if (!dch->rx_skb) {
+		dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC);
+		if (!dch->rx_skb) {
+			pr_info("%s: D receive out of memory\n", card->name);
+			WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
+			return;
+		}
+	}
+	if ((dch->rx_skb->len + count) >= dch->maxlen) {
+		pr_debug("%s: empty_Dfifo overrun %d\n", card->name,
+			dch->rx_skb->len + count);
+		WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
+		return;
+	}
+	ptr = skb_put(dch->rx_skb, count);
+	insb(card->addr + W_D_RFIFO, ptr, count);
+	WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
+	if (debug & DEBUG_HW_DFIFO) {
+		snprintf(card->log, 63, "D-recv %s %d ",
+			card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
+	}
+}
+
+static void
+W6692_fill_Dfifo(struct w6692_hw *card)
+{
+	struct dchannel *dch = &card->dch;
+	int count;
+	u8 *ptr;
+	u8 cmd = W_D_CMDR_XMS;
+
+	pr_debug("%s: fill_Dfifo\n", card->name);
+	if (!dch->tx_skb)
+		return;
+	count = dch->tx_skb->len - dch->tx_idx;
+	if (count <= 0)
+		return;
+	if (count > W_D_FIFO_THRESH)
+		count = W_D_FIFO_THRESH;
+	else
+		cmd |= W_D_CMDR_XME;
+	ptr = dch->tx_skb->data + dch->tx_idx;
+	dch->tx_idx += count;
+	outsb(card->addr + W_D_XFIFO, ptr, count);
+	WriteW6692(card, W_D_CMDR, cmd);
+	if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) {
+		pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name);
+		del_timer(&dch->timer);
+	}
+	init_timer(&dch->timer);
+	dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000);
+	add_timer(&dch->timer);
+	if (debug & DEBUG_HW_DFIFO) {
+		snprintf(card->log, 63, "D-send %s %d ",
+			card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
+	}
+}
+
+static void
+d_retransmit(struct w6692_hw *card)
+{
+	struct dchannel *dch = &card->dch;
+
+	if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
+		del_timer(&dch->timer);
+#ifdef FIXME
+	if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
+		dchannel_sched_event(dch, D_CLEARBUSY);
+#endif
+	if (test_bit(FLG_TX_BUSY, &dch->Flags)) {
+		/* Restart frame */
+		dch->tx_idx = 0;
+		W6692_fill_Dfifo(card);
+	} else if (dch->tx_skb) { /* should not happen */
+		pr_info("%s: %s without TX_BUSY\n", card->name, __func__);
+		test_and_set_bit(FLG_TX_BUSY, &dch->Flags);
+		dch->tx_idx = 0;
+		W6692_fill_Dfifo(card);
+	} else {
+		pr_info("%s: XDU no TX_BUSY\n", card->name);
+		if (get_next_dframe(dch))
+			W6692_fill_Dfifo(card);
+	}
+}
+
+static void
+handle_rxD(struct w6692_hw *card) {
+	u8	stat;
+	int	count;
+
+	stat = ReadW6692(card, W_D_RSTA);
+	if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
+		if (stat & W_D_RSTA_RDOV) {
+			pr_debug("%s: D-channel RDOV\n", card->name);
+#ifdef ERROR_STATISTIC
+			card->dch.err_rx++;
+#endif
+		}
+		if (stat & W_D_RSTA_CRCE) {
+			pr_debug("%s: D-channel CRC error\n", card->name);
+#ifdef ERROR_STATISTIC
+			card->dch.err_crc++;
+#endif
+		}
+		if (stat & W_D_RSTA_RMB) {
+			pr_debug("%s: D-channel ABORT\n", card->name);
+#ifdef ERROR_STATISTIC
+			card->dch.err_rx++;
+#endif
+		}
+		if (card->dch.rx_skb)
+			dev_kfree_skb(card->dch.rx_skb);
+		card->dch.rx_skb = NULL;
+		WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
+	} else {
+		count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
+		if (count == 0)
+			count = W_D_FIFO_THRESH;
+		W6692_empty_Dfifo(card, count);
+		recv_Dchannel(&card->dch);
+	}
+}
+
+static void
+handle_txD(struct w6692_hw *card) {
+	if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags))
+		del_timer(&card->dch.timer);
+	if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) {
+		W6692_fill_Dfifo(card);
+	} else {
+		if (card->dch.tx_skb)
+			dev_kfree_skb(card->dch.tx_skb);
+		if (get_next_dframe(&card->dch))
+			W6692_fill_Dfifo(card);
+	}
+}
+
+static void
+handle_statusD(struct w6692_hw *card)
+{
+	struct dchannel *dch = &card->dch;
+	u8 exval, v1, cir;
+
+	exval = ReadW6692(card, W_D_EXIR);
+
+	pr_debug("%s: D_EXIR %02x\n", card->name, exval);
+	if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) {
+		/* Transmit underrun/collision */
+		pr_debug("%s: D-channel underrun/collision\n", card->name);
+#ifdef ERROR_STATISTIC
+		dch->err_tx++;
+#endif
+		d_retransmit(card);
+	}
+	if (exval & W_D_EXI_RDOV) {	/* RDOV */
+		pr_debug("%s: D-channel RDOV\n", card->name);
+		WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST);
+	}
+	if (exval & W_D_EXI_TIN2)	/* TIN2 - never */
+		pr_debug("%s: spurious TIN2 interrupt\n", card->name);
+	if (exval & W_D_EXI_MOC) {	/* MOC - not supported */
+		v1 = ReadW6692(card, W_MOSR);
+		pr_debug("%s: spurious MOC interrupt MOSR %02x\n",
+			card->name, v1);
+	}
+	if (exval & W_D_EXI_ISC) {	/* ISC - Level1 change */
+		cir = ReadW6692(card, W_CIR);
+		pr_debug("%s: ISC CIR %02X\n", card->name, cir);
+		if (cir & W_CIR_ICC) {
+			v1 = cir & W_CIR_COD_MASK;
+			pr_debug("%s: ph_state_change %x -> %x\n", card->name,
+				dch->state, v1);
+			card->state = v1;
+			if (card->fmask & led) {
+				switch (v1) {
+				case W_L1IND_AI8:
+				case W_L1IND_AI10:
+					w6692_led_handler(card, 1);
+					break;
+				default:
+					w6692_led_handler(card, 0);
+					break;
+				}
+			}
+			W6692_new_ph(card);
+		}
+		if (cir & W_CIR_SCC) {
+			v1 = ReadW6692(card, W_SQR);
+			pr_debug("%s: SCC SQR %02X\n", card->name, v1);
+		}
+	}
+	if (exval & W_D_EXI_WEXP)
+		pr_debug("%s: spurious WEXP interrupt!\n", card->name);
+	if (exval & W_D_EXI_TEXP)
+		pr_debug("%s: spurious TEXP interrupt!\n", card->name);
+}
+
+static void
+W6692_empty_Bfifo(struct w6692_ch *wch, int count)
+{
+	struct w6692_hw *card = wch->bch.hw;
+	u8 *ptr;
+
+	pr_debug("%s: empty_Bfifo %d\n", card->name, count);
+	if (unlikely(wch->bch.state == ISDN_P_NONE)) {
+		pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name);
+		WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
+		if (wch->bch.rx_skb)
+			skb_trim(wch->bch.rx_skb, 0);
+		return;
+	}
+	if (!wch->bch.rx_skb) {
+		wch->bch.rx_skb = mI_alloc_skb(wch->bch.maxlen, GFP_ATOMIC);
+		if (unlikely(!wch->bch.rx_skb)) {
+			pr_info("%s: B receive out of memory\n", card->name);
+			WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
+				W_B_CMDR_RACT);
+			return;
+		}
+	}
+	if (wch->bch.rx_skb->len + count > wch->bch.maxlen) {
+		pr_debug("%s: empty_Bfifo incoming packet too large\n",
+			card->name);
+		WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
+		skb_trim(wch->bch.rx_skb, 0);
+		return;
+	}
+	ptr = skb_put(wch->bch.rx_skb, count);
+	insb(wch->addr + W_B_RFIFO, ptr, count);
+	WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
+	if (debug & DEBUG_HW_DFIFO) {
+		snprintf(card->log, 63, "B%1d-recv %s %d ",
+			wch->bch.nr, card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
+	}
+}
+
+static void
+W6692_fill_Bfifo(struct w6692_ch *wch)
+{
+	struct w6692_hw *card = wch->bch.hw;
+	int count;
+	u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS;
+
+	pr_debug("%s: fill Bfifo\n", card->name);
+	if (!wch->bch.tx_skb)
+		return;
+	count = wch->bch.tx_skb->len - wch->bch.tx_idx;
+	if (count <= 0)
+		return;
+	ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
+	if (count > W_B_FIFO_THRESH)
+		count = W_B_FIFO_THRESH;
+	else if (test_bit(FLG_HDLC, &wch->bch.Flags))
+		cmd |= W_B_CMDR_XME;
+
+	pr_debug("%s: fill Bfifo%d/%d\n", card->name,
+			count, wch->bch.tx_idx);
+	wch->bch.tx_idx += count;
+	outsb(wch->addr + W_B_XFIFO, ptr, count);
+	WriteW6692B(wch, W_B_CMDR, cmd);
+	if (debug & DEBUG_HW_DFIFO) {
+		snprintf(card->log, 63, "B%1d-send %s %d ",
+			wch->bch.nr, card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
+	}
+}
+
+static int
+setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb)
+{
+	struct w6692_hw *card = wch->bch.hw;
+	u16 *vol = (u16 *)skb->data;
+	u8 val;
+
+	if ((!(card->fmask & pots)) ||
+	    !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
+		return -ENODEV;
+	if (skb->len < 2)
+		return -EINVAL;
+	if (*vol > 7)
+		return -EINVAL;
+	val = *vol & 7;
+	val = 7 - val;
+	if (mic) {
+		val <<= 3;
+		card->xaddr &= 0xc7;
+	} else {
+		card->xaddr &= 0xf8;
+	}
+	card->xaddr |= val;
+	WriteW6692(card, W_XADDR, card->xaddr);
+	return 0;
+}
+
+static int
+enable_pots(struct w6692_ch *wch)
+{
+	struct w6692_hw *card = wch->bch.hw;
+
+	if ((!(card->fmask & pots)) ||
+	    !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
+		return -ENODEV;
+	wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0;
+	WriteW6692B(wch, W_B_MODE, wch->b_mode);
+	WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
+	card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0);
+	WriteW6692(card, W_PCTL, card->pctl);
+	return 0;
+}
+
+static int
+disable_pots(struct w6692_ch *wch)
+{
+	struct w6692_hw *card = wch->bch.hw;
+
+	if (!(card->fmask & pots))
+		return -ENODEV;
+	wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0);
+	WriteW6692B(wch, W_B_MODE, wch->b_mode);
+	WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
+		W_B_CMDR_XRST);
+	return 0;
+}
+
+static int
+w6692_mode(struct w6692_ch *wch, u32 pr)
+{
+	struct w6692_hw	*card;
+
+	card = wch->bch.hw;
+	pr_debug("%s: B%d protocol %x-->%x\n", card->name,
+		wch->bch.nr, wch->bch.state, pr);
+	switch (pr) {
+	case ISDN_P_NONE:
+		if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM))
+			disable_pots(wch);
+		wch->b_mode = 0;
+		mISDN_clear_bchannel(&wch->bch);
+		WriteW6692B(wch, W_B_MODE, wch->b_mode);
+		WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
+		test_and_clear_bit(FLG_HDLC, &wch->bch.Flags);
+		test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags);
+		break;
+	case ISDN_P_B_RAW:
+		wch->b_mode = W_B_MODE_MMS;
+		WriteW6692B(wch, W_B_MODE, wch->b_mode);
+		WriteW6692B(wch, W_B_EXIM, 0);
+		WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
+			W_B_CMDR_XRST);
+		test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags);
+		break;
+	case ISDN_P_B_HDLC:
+		wch->b_mode = W_B_MODE_ITF;
+		WriteW6692B(wch, W_B_MODE, wch->b_mode);
+		WriteW6692B(wch, W_B_ADM1, 0xff);
+		WriteW6692B(wch, W_B_ADM2, 0xff);
+		WriteW6692B(wch, W_B_EXIM, 0);
+		WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
+			W_B_CMDR_XRST);
+		test_and_set_bit(FLG_HDLC, &wch->bch.Flags);
+		break;
+	default:
+		pr_info("%s: protocol %x not known\n", card->name, pr);
+		return -ENOPROTOOPT;
+	}
+	wch->bch.state = pr;
+	return 0;
+}
+
+static void
+send_next(struct w6692_ch *wch)
+{
+	if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len)
+		W6692_fill_Bfifo(wch);
+	else {
+		if (wch->bch.tx_skb) {
+			/* send confirm, on trans, free on hdlc. */
+			if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
+				confirm_Bsend(&wch->bch);
+			dev_kfree_skb(wch->bch.tx_skb);
+		}
+		if (get_next_bframe(&wch->bch))
+			W6692_fill_Bfifo(wch);
+	}
+}
+
+static void
+W6692B_interrupt(struct w6692_hw *card, int ch)
+{
+	struct w6692_ch	*wch = &card->bc[ch];
+	int		count;
+	u8		stat, star = 0;
+
+	stat = ReadW6692B(wch, W_B_EXIR);
+	pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat);
+	if (stat & W_B_EXI_RME) {
+		star = ReadW6692B(wch, W_B_STAR);
+		if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
+			if ((star & W_B_STAR_RDOV) &&
+			    test_bit(FLG_ACTIVE, &wch->bch.Flags)) {
+				pr_debug("%s: B%d RDOV proto=%x\n", card->name,
+					wch->bch.nr, wch->bch.state);
+#ifdef ERROR_STATISTIC
+				wch->bch.err_rdo++;
+#endif
+			}
+			if (test_bit(FLG_HDLC, &wch->bch.Flags)) {
+				if (star & W_B_STAR_CRCE) {
+					pr_debug("%s: B%d CRC error\n",
+						card->name, wch->bch.nr);
+#ifdef ERROR_STATISTIC
+					wch->bch.err_crc++;
+#endif
+				}
+				if (star & W_B_STAR_RMB) {
+					pr_debug("%s: B%d message abort\n",
+						card->name, wch->bch.nr);
+#ifdef ERROR_STATISTIC
+					wch->bch.err_inv++;
+#endif
+				}
+			}
+			WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
+				W_B_CMDR_RRST | W_B_CMDR_RACT);
+			if (wch->bch.rx_skb)
+				skb_trim(wch->bch.rx_skb, 0);
+		} else {
+			count = ReadW6692B(wch, W_B_RBCL) &
+				(W_B_FIFO_THRESH - 1);
+			if (count == 0)
+				count = W_B_FIFO_THRESH;
+			W6692_empty_Bfifo(wch, count);
+			recv_Bchannel(&wch->bch, 0);
+		}
+	}
+	if (stat & W_B_EXI_RMR) {
+		if (!(stat & W_B_EXI_RME))
+			star = ReadW6692B(wch, W_B_STAR);
+		if (star & W_B_STAR_RDOV) {
+			pr_debug("%s: B%d RDOV proto=%x\n", card->name,
+				wch->bch.nr, wch->bch.state);
+#ifdef ERROR_STATISTIC
+			wch->bch.err_rdo++;
+#endif
+			WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
+				W_B_CMDR_RRST | W_B_CMDR_RACT);
+		} else {
+			W6692_empty_Bfifo(wch, W_B_FIFO_THRESH);
+			if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags) &&
+			    wch->bch.rx_skb && (wch->bch.rx_skb->len > 0))
+				recv_Bchannel(&wch->bch, 0);
+		}
+	}
+	if (stat & W_B_EXI_RDOV) {
+		/* only if it is not handled yet */
+		if (!(star & W_B_STAR_RDOV)) {
+			pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name,
+				wch->bch.nr, wch->bch.state);
+#ifdef ERROR_STATISTIC
+			wch->bch.err_rdo++;
+#endif
+			WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
+				W_B_CMDR_RRST | W_B_CMDR_RACT);
+		}
+	}
+	if (stat & W_B_EXI_XFR) {
+		if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) {
+			star = ReadW6692B(wch, W_B_STAR);
+			pr_debug("%s: B%d star %02x\n", card->name,
+				wch->bch.nr, star);
+		}
+		if (star & W_B_STAR_XDOW) {
+			pr_debug("%s: B%d XDOW proto=%x\n", card->name,
+				wch->bch.nr, wch->bch.state);
+#ifdef ERROR_STATISTIC
+			wch->bch.err_xdu++;
+#endif
+			WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST |
+				W_B_CMDR_RACT);
+			/* resend */
+			if (wch->bch.tx_skb) {
+				if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
+					wch->bch.tx_idx = 0;
+			}
+		}
+		send_next(wch);
+		if (stat & W_B_EXI_XDUN)
+			return; /* handle XDOW only once */
+	}
+	if (stat & W_B_EXI_XDUN) {
+		pr_debug("%s: B%d XDUN proto=%x\n", card->name,
+			wch->bch.nr, wch->bch.state);
+#ifdef ERROR_STATISTIC
+		wch->bch.err_xdu++;
+#endif
+		WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
+		/* resend */
+		if (wch->bch.tx_skb) {
+			if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
+				wch->bch.tx_idx = 0;
+		}
+		send_next(wch);
+	}
+}
+
+static irqreturn_t
+w6692_irq(int intno, void *dev_id)
+{
+	struct w6692_hw	*card = dev_id;
+	u8		ista;
+
+	spin_lock(&card->lock);
+	ista = ReadW6692(card, W_ISTA);
+	if ((ista | card->imask) == card->imask) {
+		/* possible a shared  IRQ reqest */
+		spin_unlock(&card->lock);
+		return IRQ_NONE;
+	}
+	card->irqcnt++;
+	pr_debug("%s: ista %02x\n", card->name, ista);
+	ista &= ~card->imask;
+	if (ista & W_INT_B1_EXI)
+		W6692B_interrupt(card, 0);
+	if (ista & W_INT_B2_EXI)
+		W6692B_interrupt(card, 1);
+	if (ista & W_INT_D_RME)
+		handle_rxD(card);
+	if (ista & W_INT_D_RMR)
+		W6692_empty_Dfifo(card, W_D_FIFO_THRESH);
+	if (ista & W_INT_D_XFR)
+		handle_txD(card);
+	if (ista & W_INT_D_EXI)
+		handle_statusD(card);
+	if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */
+		pr_debug("%s: W6692 spurious XINT!\n", card->name);
+/* End IRQ Handler */
+	spin_unlock(&card->lock);
+	return IRQ_HANDLED;
+}
+
+static void
+dbusy_timer_handler(struct dchannel *dch)
+{
+	struct w6692_hw	*card = dch->hw;
+	int		rbch, star;
+	u_long		flags;
+
+	if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) {
+		spin_lock_irqsave(&card->lock, flags);
+		rbch = ReadW6692(card, W_D_RBCH);
+		star = ReadW6692(card, W_D_STAR);
+		pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n",
+			card->name, rbch, star);
+		if (star & W_D_STAR_XBZ)	/* D-Channel Busy */
+			test_and_set_bit(FLG_L1_BUSY, &dch->Flags);
+		else {
+			/* discard frame; reset transceiver */
+			test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags);
+			if (dch->tx_idx)
+				dch->tx_idx = 0;
+			else
+				pr_info("%s: W6692 D-Channel Busy no tx_idx\n",
+					card->name);
+			/* Transmitter reset */
+			WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST);
+		}
+		spin_unlock_irqrestore(&card->lock, flags);
+	}
+}
+
+void initW6692(struct w6692_hw *card)
+{
+	u8	val;
+
+	card->dch.timer.function = (void *)dbusy_timer_handler;
+	card->dch.timer.data = (u_long)&card->dch;
+	init_timer(&card->dch.timer);
+	w6692_mode(&card->bc[0], ISDN_P_NONE);
+	w6692_mode(&card->bc[1], ISDN_P_NONE);
+	WriteW6692(card, W_D_CTL, 0x00);
+	disable_hwirq(card);
+	WriteW6692(card, W_D_SAM, 0xff);
+	WriteW6692(card, W_D_TAM, 0xff);
+	WriteW6692(card, W_D_MODE, W_D_MODE_RACT);
+	card->state = W_L1CMD_RST;
+	ph_command(card, W_L1CMD_RST);
+	ph_command(card, W_L1CMD_ECK);
+	/* enable all IRQ but extern */
+	card->imask = 0x18;
+	WriteW6692(card, W_D_EXIM, 0x00);
+	WriteW6692B(&card->bc[0], W_B_EXIM, 0);
+	WriteW6692B(&card->bc[1], W_B_EXIM, 0);
+	/* Reset D-chan receiver and transmitter */
+	WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
+	/* Reset B-chan receiver and transmitter */
+	WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
+	WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
+	/* enable peripheral */
+	if (card->subtype == W6692_USR) {
+		/* seems that USR implemented some power control features
+		 * Pin 79 is connected to the oscilator circuit so we
+		 * have to handle it here
+		 */
+		card->pctl = 0x80;
+		card->xdata = 0;
+		WriteW6692(card, W_PCTL, card->pctl);
+		WriteW6692(card, W_XDATA, card->xdata);
+	} else {
+		card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 |
+			W_PCTL_OE1 | W_PCTL_OE0;
+		card->xaddr = 0x00;/* all sw off */
+		if (card->fmask & pots)
+			card->xdata |= 0x06;	/*  POWER UP/ LED OFF / ALAW */
+		if (card->fmask & led)
+			card->xdata |= 0x04;	/* LED OFF */
+		if ((card->fmask & pots) || (card->fmask & led)) {
+			WriteW6692(card, W_PCTL, card->pctl);
+			WriteW6692(card, W_XADDR, card->xaddr);
+			WriteW6692(card, W_XDATA, card->xdata);
+			val = ReadW6692(card, W_XADDR);
+			if (debug & DEBUG_HW)
+				pr_notice("%s: W_XADDR=%02x\n",
+					card->name, val);
+		}
+	}
+}
+
+static void
+reset_w6692(struct w6692_hw *card)
+{
+	WriteW6692(card, W_D_CTL, W_D_CTL_SRST);
+	mdelay(10);
+	WriteW6692(card, W_D_CTL, 0);
+}
+
+static int
+init_card(struct w6692_hw *card)
+{
+	int	cnt = 3;
+	u_long	flags;
+
+	spin_lock_irqsave(&card->lock, flags);
+	disable_hwirq(card);
+	spin_unlock_irqrestore(&card->lock, flags);
+	if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) {
+		pr_info("%s: couldn't get interrupt %d\n", card->name,
+			card->irq);
+		return -EIO;
+	}
+	while (cnt--) {
+		spin_lock_irqsave(&card->lock, flags);
+		initW6692(card);
+		enable_hwirq(card);
+		spin_unlock_irqrestore(&card->lock, flags);
+		/* Timeout 10ms */
+		msleep_interruptible(10);
+		if (debug & DEBUG_HW)
+			pr_notice("%s: IRQ %d count %d\n", card->name,
+				card->irq, card->irqcnt);
+		if (!card->irqcnt) {
+			pr_info("%s: IRQ(%d) getting no IRQs during init %d\n",
+				card->name, card->irq, 3 - cnt);
+			reset_w6692(card);
+		} else
+			return 0;
+	}
+	free_irq(card->irq, card);
+	return -EIO;
+}
+
+static int
+w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct w6692_ch	*bc = container_of(bch, struct w6692_ch, bch);
+	struct w6692_hw *card = bch->hw;
+	int ret = -EINVAL;
+	struct mISDNhead *hh = mISDN_HEAD_P(skb);
+	u32 id;
+	u_long flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		ret = bchannel_senddata(bch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			ret = 0;
+			W6692_fill_Bfifo(bc);
+			spin_unlock_irqrestore(&card->lock, flags);
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(&card->lock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
+			ret = w6692_mode(bc, ch->protocol);
+		else
+			ret = 0;
+		spin_unlock_irqrestore(&card->lock, flags);
+		if (!ret)
+			_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+				NULL, GFP_KERNEL);
+		break;
+	case PH_DEACTIVATE_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		mISDN_clear_bchannel(bch);
+		w6692_mode(bc, ISDN_P_NONE);
+		spin_unlock_irqrestore(&card->lock, flags);
+		_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
+			NULL, GFP_KERNEL);
+		ret = 0;
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x,%x)\n",
+			card->name, __func__, hh->prim, hh->id);
+		ret = -EINVAL;
+	}
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	/* Nothing implemented yet */
+	case MISDN_CTRL_FILL_EMPTY:
+	default:
+		pr_info("%s: unknown Op %x\n", __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+open_bchannel(struct w6692_hw *card, struct channel_req *rq)
+{
+	struct bchannel *bch;
+
+	if (rq->adr.channel > 2)
+		return -EINVAL;
+	if (rq->protocol == ISDN_P_NONE)
+		return -EINVAL;
+	bch = &card->bc[rq->adr.channel - 1].bch;
+	if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+		return -EBUSY; /* b-channel can be only open once */
+	test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
+	bch->ch.protocol = rq->protocol;
+	rq->ch = &bch->ch;
+	return 0;
+}
+
+static int
+channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	default:
+		pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
+	struct w6692_hw *card = bch->hw;
+	int ret = -EINVAL;
+	u_long flags;
+
+	pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
+	switch (cmd) {
+	case CLOSE_CHANNEL:
+		test_and_clear_bit(FLG_OPEN, &bch->Flags);
+		if (test_bit(FLG_ACTIVE, &bch->Flags)) {
+			spin_lock_irqsave(&card->lock, flags);
+			mISDN_freebchannel(bch);
+			w6692_mode(bc, ISDN_P_NONE);
+			spin_unlock_irqrestore(&card->lock, flags);
+		} else {
+			skb_queue_purge(&bch->rqueue);
+			bch->rcount = 0;
+		}
+		ch->protocol = ISDN_P_NONE;
+		ch->peer = NULL;
+		module_put(THIS_MODULE);
+		ret = 0;
+		break;
+	case CONTROL_CHANNEL:
+		ret = channel_bctrl(bch, arg);
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x)\n",
+			card->name, __func__, cmd);
+	}
+	return ret;
+}
+
+static int
+w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	struct mISDNdevice	*dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel		*dch = container_of(dev, struct dchannel, dev);
+	struct w6692_hw		*card = container_of(dch, struct w6692_hw, dch);
+	int			ret = -EINVAL;
+	struct mISDNhead	*hh = mISDN_HEAD_P(skb);
+	u32			id;
+	u_long			flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		ret = dchannel_senddata(dch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			W6692_fill_Dfifo(card);
+			ret = 0;
+			spin_unlock_irqrestore(&card->lock, flags);
+			queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(&card->lock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		ret = l1_event(dch->l1, hh->prim);
+		break;
+	case PH_DEACTIVATE_REQ:
+		test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
+		ret = l1_event(dch->l1, hh->prim);
+		break;
+	}
+
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+w6692_l1callback(struct dchannel *dch, u32 cmd)
+{
+	struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
+	u_long flags;
+
+	pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state);
+	switch (cmd) {
+	case INFO3_P8:
+		spin_lock_irqsave(&card->lock, flags);
+		ph_command(card, W_L1CMD_AR8);
+		spin_unlock_irqrestore(&card->lock, flags);
+		break;
+	case INFO3_P10:
+		spin_lock_irqsave(&card->lock, flags);
+		ph_command(card, W_L1CMD_AR10);
+		spin_unlock_irqrestore(&card->lock, flags);
+		break;
+	case HW_RESET_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		if (card->state != W_L1IND_DRD)
+			ph_command(card, W_L1CMD_RST);
+		ph_command(card, W_L1CMD_ECK);
+		spin_unlock_irqrestore(&card->lock, flags);
+		break;
+	case HW_DEACT_REQ:
+		skb_queue_purge(&dch->squeue);
+		if (dch->tx_skb) {
+			dev_kfree_skb(dch->tx_skb);
+			dch->tx_skb = NULL;
+		}
+		dch->tx_idx = 0;
+		if (dch->rx_skb) {
+			dev_kfree_skb(dch->rx_skb);
+			dch->rx_skb = NULL;
+		}
+		test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
+		if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
+			del_timer(&dch->timer);
+		break;
+	case HW_POWERUP_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		ph_command(card, W_L1CMD_ECK);
+		spin_unlock_irqrestore(&card->lock, flags);
+		break;
+	case PH_ACTIVATE_IND:
+		test_and_set_bit(FLG_ACTIVE, &dch->Flags);
+		_queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
+			GFP_ATOMIC);
+		break;
+	case PH_DEACTIVATE_IND:
+		test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
+		_queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
+			GFP_ATOMIC);
+		break;
+	default:
+		pr_debug("%s: %s unknown command %x\n", card->name,
+			__func__, cmd);
+		return -1;
+	}
+	return 0;
+}
+
+static int
+open_dchannel(struct w6692_hw *card, struct channel_req *rq)
+{
+	pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__,
+		card->dch.dev.id, __builtin_return_address(1));
+	if (rq->protocol != ISDN_P_TE_S0)
+		return -EINVAL;
+	if (rq->adr.channel == 1)
+		/* E-Channel not supported */
+		return -EINVAL;
+	rq->ch = &card->dch.dev.D;
+	rq->ch->protocol = rq->protocol;
+	if (card->dch.state == 7)
+		_queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
+		    0, NULL, GFP_KERNEL);
+	return 0;
+}
+
+static int
+w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel *dch = container_of(dev, struct dchannel, dev);
+	struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
+	struct channel_req *rq;
+	int err = 0;
+
+	pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg);
+	switch (cmd) {
+	case OPEN_CHANNEL:
+		rq = arg;
+		if (rq->protocol == ISDN_P_TE_S0)
+			err = open_dchannel(card, rq);
+		else
+			err = open_bchannel(card, rq);
+		if (err)
+			break;
+		if (!try_module_get(THIS_MODULE))
+			pr_info("%s: cannot get module\n", card->name);
+		break;
+	case CLOSE_CHANNEL:
+		pr_debug("%s: dev(%d) close from %p\n", card->name,
+			dch->dev.id, __builtin_return_address(0));
+		module_put(THIS_MODULE);
+		break;
+	case CONTROL_CHANNEL:
+		err = channel_ctrl(card, arg);
+		break;
+	default:
+		pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd);
+		return -EINVAL;
+	}
+	return err;
+}
+
+int
+setup_w6692(struct w6692_hw *card)
+{
+	u32	val;
+
+	if (!request_region(card->addr, 256, card->name)) {
+		pr_info("%s: config port %x-%x already in use\n", card->name,
+		       card->addr, card->addr + 255);
+		return -EIO;
+	}
+	W6692Version(card);
+	card->bc[0].addr = card->addr;
+	card->bc[1].addr = card->addr + 0x40;
+	val = ReadW6692(card, W_ISTA);
+	if (debug & DEBUG_HW)
+		pr_notice("%s ISTA=%02x\n", card->name, val);
+	val = ReadW6692(card, W_IMASK);
+	if (debug & DEBUG_HW)
+		pr_notice("%s IMASK=%02x\n", card->name, val);
+	val = ReadW6692(card, W_D_EXIR);
+	if (debug & DEBUG_HW)
+		pr_notice("%s D_EXIR=%02x\n", card->name, val);
+	val = ReadW6692(card, W_D_EXIM);
+	if (debug & DEBUG_HW)
+		pr_notice("%s D_EXIM=%02x\n", card->name, val);
+	val = ReadW6692(card, W_D_RSTA);
+	if (debug & DEBUG_HW)
+		pr_notice("%s D_RSTA=%02x\n", card->name, val);
+	return 0;
+}
+
+static void
+release_card(struct w6692_hw *card)
+{
+	u_long	flags;
+
+	spin_lock_irqsave(&card->lock, flags);
+	disable_hwirq(card);
+	w6692_mode(&card->bc[0], ISDN_P_NONE);
+	w6692_mode(&card->bc[1], ISDN_P_NONE);
+	if ((card->fmask & led) || card->subtype == W6692_USR) {
+		card->xdata |= 0x04;	/*  LED OFF */
+		WriteW6692(card, W_XDATA, card->xdata);
+	}
+	spin_unlock_irqrestore(&card->lock, flags);
+	free_irq(card->irq, card);
+	l1_event(card->dch.l1, CLOSE_CHANNEL);
+	mISDN_unregister_device(&card->dch.dev);
+	release_region(card->addr, 256);
+	mISDN_freebchannel(&card->bc[1].bch);
+	mISDN_freebchannel(&card->bc[0].bch);
+	mISDN_freedchannel(&card->dch);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	pci_disable_device(card->pdev);
+	pci_set_drvdata(card->pdev, NULL);
+	kfree(card);
+}
+
+static int
+setup_instance(struct w6692_hw *card)
+{
+	int		i, err;
+	u_long		flags;
+
+	snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1);
+	write_lock_irqsave(&card_lock, flags);
+	list_add_tail(&card->list, &Cards);
+	write_unlock_irqrestore(&card_lock, flags);
+	card->fmask = (1 << w6692_cnt);
+	_set_debug(card);
+	spin_lock_init(&card->lock);
+	mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh);
+	card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
+	card->dch.dev.D.send = w6692_l2l1D;
+	card->dch.dev.D.ctrl = w6692_dctrl;
+	card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
+	card->dch.hw = card;
+	card->dch.dev.nrbchan = 2;
+	for (i = 0; i < 2; i++) {
+		mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM);
+		card->bc[i].bch.hw = card;
+		card->bc[i].bch.nr = i + 1;
+		card->bc[i].bch.ch.nr = i + 1;
+		card->bc[i].bch.ch.send = w6692_l2l1B;
+		card->bc[i].bch.ch.ctrl = w6692_bctrl;
+		set_channelmap(i + 1, card->dch.dev.channelmap);
+		list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels);
+	}
+	err = setup_w6692(card);
+	if (err)
+		goto error_setup;
+	err = mISDN_register_device(&card->dch.dev, &card->pdev->dev,
+		card->name);
+	if (err)
+		goto error_reg;
+	err = init_card(card);
+	if (err)
+		goto error_init;
+	err = create_l1(&card->dch, w6692_l1callback);
+	if (!err) {
+		w6692_cnt++;
+		pr_notice("W6692 %d cards installed\n", w6692_cnt);
+		return 0;
+	}
+
+	free_irq(card->irq, card);
+error_init:
+	mISDN_unregister_device(&card->dch.dev);
+error_reg:
+	release_region(card->addr, 256);
+error_setup:
+	mISDN_freebchannel(&card->bc[1].bch);
+	mISDN_freebchannel(&card->bc[0].bch);
+	mISDN_freedchannel(&card->dch);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	kfree(card);
+	return err;
+}
+
+static int __devinit
+w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int		err = -ENOMEM;
+	struct w6692_hw	*card;
+	struct w6692map	*m = (struct w6692map *)ent->driver_data;
+
+	card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL);
+	if (!card) {
+		pr_info("No kmem for w6692 card\n");
+		return err;
+	}
+	card->pdev = pdev;
+	card->subtype = m->subtype;
+	err = pci_enable_device(pdev);
+	if (err) {
+		kfree(card);
+		return err;
+	}
+
+	printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n",
+	       m->name, pci_name(pdev));
+
+	card->addr = pci_resource_start(pdev, 1);
+	card->irq = pdev->irq;
+	pci_set_drvdata(pdev, card);
+	err = setup_instance(card);
+	if (err)
+		pci_set_drvdata(pdev, NULL);
+	return err;
+}
+
+static void __devexit
+w6692_remove_pci(struct pci_dev *pdev)
+{
+	struct w6692_hw	*card = pci_get_drvdata(pdev);
+
+	if (card)
+		release_card(card);
+	else
+		if (debug)
+			pr_notice("%s: drvdata allready removed\n", __func__);
+}
+
+static struct pci_device_id w6692_ids[] = {
+	{ PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]},
+	{ PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
+	  PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0,
+	  (ulong)&w6692_map[2]},
+	{ PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]},
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, w6692_ids);
+
+static struct pci_driver w6692_driver = {
+	.name =  "w6692",
+	.probe = w6692_probe,
+	.remove = __devexit_p(w6692_remove_pci),
+	.id_table = w6692_ids,
+};
+
+static int __init w6692_init(void)
+{
+	int err;
+
+	pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV);
+
+	err = pci_register_driver(&w6692_driver);
+	return err;
+}
+
+static void __exit w6692_cleanup(void)
+{
+	pci_unregister_driver(&w6692_driver);
+}
+
+module_init(w6692_init);
+module_exit(w6692_cleanup);

drivers/isdn/hardware/mISDN/w6692.h

@@ -0,0 +1,190 @@
+/*
+ * Winbond W6692 specific defines
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *		based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/* Specifications of W6692 registers */
+
+#define W_D_RFIFO	0x00	/* R */
+#define W_D_XFIFO	0x04	/* W */
+#define W_D_CMDR	0x08	/* W */
+#define W_D_MODE	0x0c	/* R/W */
+#define W_D_TIMR	0x10	/* R/W */
+#define W_ISTA		0x14	/* R_clr */
+#define W_IMASK		0x18	/* R/W */
+#define W_D_EXIR	0x1c	/* R_clr */
+#define W_D_EXIM	0x20	/* R/W */
+#define W_D_STAR	0x24	/* R */
+#define W_D_RSTA	0x28	/* R */
+#define W_D_SAM		0x2c	/* R/W */
+#define W_D_SAP1	0x30	/* R/W */
+#define W_D_SAP2	0x34	/* R/W */
+#define W_D_TAM		0x38	/* R/W */
+#define W_D_TEI1	0x3c	/* R/W */
+#define W_D_TEI2	0x40	/* R/W */
+#define W_D_RBCH	0x44	/* R */
+#define W_D_RBCL	0x48	/* R */
+#define W_TIMR2		0x4c	/* W */
+#define W_L1_RC		0x50	/* R/W */
+#define W_D_CTL		0x54	/* R/W */
+#define W_CIR		0x58	/* R */
+#define W_CIX		0x5c	/* W */
+#define W_SQR		0x60	/* R */
+#define W_SQX		0x64	/* W */
+#define W_PCTL		0x68	/* R/W */
+#define W_MOR		0x6c	/* R */
+#define W_MOX		0x70	/* R/W */
+#define W_MOSR		0x74	/* R_clr */
+#define W_MOCR		0x78	/* R/W */
+#define W_GCR		0x7c	/* R/W */
+
+#define	W_B_RFIFO	0x80	/* R */
+#define	W_B_XFIFO	0x84	/* W */
+#define	W_B_CMDR	0x88	/* W */
+#define	W_B_MODE	0x8c	/* R/W */
+#define	W_B_EXIR	0x90	/* R_clr */
+#define	W_B_EXIM	0x94	/* R/W */
+#define	W_B_STAR	0x98	/* R */
+#define	W_B_ADM1	0x9c	/* R/W */
+#define	W_B_ADM2	0xa0	/* R/W */
+#define	W_B_ADR1	0xa4	/* R/W */
+#define	W_B_ADR2	0xa8	/* R/W */
+#define	W_B_RBCL	0xac	/* R */
+#define	W_B_RBCH	0xb0	/* R */
+
+#define W_XADDR		0xf4	/* R/W */
+#define W_XDATA		0xf8	/* R/W */
+#define W_EPCTL		0xfc	/* W */
+
+/* W6692 register bits */
+
+#define	W_D_CMDR_XRST	0x01
+#define	W_D_CMDR_XME	0x02
+#define	W_D_CMDR_XMS	0x08
+#define	W_D_CMDR_STT	0x10
+#define	W_D_CMDR_RRST	0x40
+#define	W_D_CMDR_RACK	0x80
+
+#define	W_D_MODE_RLP	0x01
+#define	W_D_MODE_DLP	0x02
+#define	W_D_MODE_MFD	0x04
+#define	W_D_MODE_TEE	0x08
+#define	W_D_MODE_TMS	0x10
+#define	W_D_MODE_RACT	0x40
+#define	W_D_MODE_MMS	0x80
+
+#define W_INT_B2_EXI	0x01
+#define W_INT_B1_EXI	0x02
+#define W_INT_D_EXI	0x04
+#define W_INT_XINT0	0x08
+#define W_INT_XINT1	0x10
+#define W_INT_D_XFR	0x20
+#define W_INT_D_RME	0x40
+#define W_INT_D_RMR	0x80
+
+#define W_D_EXI_WEXP	0x01
+#define W_D_EXI_TEXP	0x02
+#define W_D_EXI_ISC	0x04
+#define W_D_EXI_MOC	0x08
+#define W_D_EXI_TIN2	0x10
+#define W_D_EXI_XCOL	0x20
+#define W_D_EXI_XDUN	0x40
+#define W_D_EXI_RDOV	0x80
+
+#define	W_D_STAR_DRDY	0x10
+#define	W_D_STAR_XBZ	0x20
+#define	W_D_STAR_XDOW	0x80
+
+#define W_D_RSTA_RMB	0x10
+#define W_D_RSTA_CRCE	0x20
+#define W_D_RSTA_RDOV	0x40
+
+#define W_D_CTL_SRST	0x20
+
+#define W_CIR_SCC	0x80
+#define W_CIR_ICC	0x40
+#define W_CIR_COD_MASK	0x0f
+
+#define W_PCTL_PCX	0x01
+#define W_PCTL_XMODE	0x02
+#define W_PCTL_OE0	0x04
+#define W_PCTL_OE1	0x08
+#define W_PCTL_OE2	0x10
+#define W_PCTL_OE3	0x20
+#define W_PCTL_OE4	0x40
+#define W_PCTL_OE5	0x80
+
+#define	W_B_CMDR_XRST	0x01
+#define	W_B_CMDR_XME	0x02
+#define	W_B_CMDR_XMS	0x04
+#define	W_B_CMDR_RACT	0x20
+#define	W_B_CMDR_RRST	0x40
+#define	W_B_CMDR_RACK	0x80
+
+#define	W_B_MODE_FTS0	0x01
+#define	W_B_MODE_FTS1	0x02
+#define	W_B_MODE_SW56	0x04
+#define	W_B_MODE_BSW0	0x08
+#define	W_B_MODE_BSW1	0x10
+#define	W_B_MODE_EPCM	0x20
+#define	W_B_MODE_ITF	0x40
+#define	W_B_MODE_MMS	0x80
+
+#define	W_B_EXI_XDUN	0x01
+#define	W_B_EXI_XFR	0x02
+#define	W_B_EXI_RDOV	0x10
+#define	W_B_EXI_RME	0x20
+#define	W_B_EXI_RMR	0x40
+
+#define	W_B_STAR_XBZ	0x01
+#define	W_B_STAR_XDOW	0x04
+#define	W_B_STAR_RMB	0x10
+#define	W_B_STAR_CRCE	0x20
+#define	W_B_STAR_RDOV	0x40
+
+#define	W_B_RBCH_LOV	0x20
+
+/* W6692 Layer1 commands */
+
+#define	W_L1CMD_ECK	0x00
+#define W_L1CMD_RST	0x01
+#define W_L1CMD_SCP	0x04
+#define W_L1CMD_SSP	0x02
+#define W_L1CMD_AR8	0x08
+#define W_L1CMD_AR10	0x09
+#define W_L1CMD_EAL	0x0a
+#define W_L1CMD_DRC	0x0f
+
+/* W6692 Layer1 indications */
+
+#define W_L1IND_CE	0x07
+#define W_L1IND_DRD	0x00
+#define W_L1IND_LD	0x04
+#define W_L1IND_ARD	0x08
+#define W_L1IND_TI	0x0a
+#define W_L1IND_ATI	0x0b
+#define W_L1IND_AI8	0x0c
+#define W_L1IND_AI10	0x0d
+#define W_L1IND_CD	0x0f
+
+/* FIFO thresholds */
+#define W_D_FIFO_THRESH	64
+#define W_B_FIFO_THRESH	64

drivers/isdn/hisax/Kconfig

@@ -391,6 +391,7 @@ comment "HiSax sub driver modules"
 config HISAX_ST5481
 	tristate "ST5481 USB ISDN modem (EXPERIMENTAL)"
 	depends on USB && EXPERIMENTAL
+	select ISDN_HDLC
 	select CRC_CCITT
 	select BITREVERSE
 	help
@@ -418,11 +419,6 @@ config HISAX_FRITZ_PCIPNP
 	  (the latter also needs you to select "ISA Plug and Play support"
 	  from the menu "Plug and Play configuration")
 
-config HISAX_HDLC
-	bool
-	depends on HISAX_ST5481
-	default y
-
 config HISAX_AVM_A1_PCMCIA
 	bool
 	depends on HISAX_AVM_A1_CS

drivers/isdn/hisax/Makefile

@@ -16,10 +16,6 @@ obj-$(CONFIG_HISAX_HFCUSB)		+= hfc_usb.o
 obj-$(CONFIG_HISAX_HFC4S8S)		+= hfc4s8s_l1.o
 obj-$(CONFIG_HISAX_FRITZ_PCIPNP)        += hisax_isac.o hisax_fcpcipnp.o
 
-ifdef CONFIG_HISAX_HDLC
-obj-$(CONFIG_ISDN_DRV_HISAX)		+= isdnhdlc.o
-endif
-
 # Multipart objects.
 
 hisax_st5481-y 				:= st5481_init.o st5481_usb.o st5481_d.o \

drivers/isdn/hisax/amd7930_fn.c

@@ -238,8 +238,6 @@ Amd7930_bh(struct work_struct *work)
 		container_of(work, struct IsdnCardState, tqueue);
         struct PStack *stptr;
 
-	if (!cs)
-		return;
 	if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
                 if (cs->debug)
 			debugl1(cs, "Amd7930: bh, D-Channel Busy cleared");

drivers/isdn/hisax/callc.c

@@ -833,8 +833,6 @@ static struct FsmNode fnlist[] __initdata =
 };
 /* *INDENT-ON* */
 
-#define FNCOUNT (sizeof(fnlist)/sizeof(struct FsmNode))
-
 int __init
 CallcNew(void)
 {
@@ -842,7 +840,7 @@ CallcNew(void)
 	callcfsm.event_count = EVENT_COUNT;
 	callcfsm.strEvent = strEvent;
 	callcfsm.strState = strState;
-	return FsmNew(&callcfsm, fnlist, FNCOUNT);
+	return FsmNew(&callcfsm, fnlist, ARRAY_SIZE(fnlist));
 }
 
 void

drivers/isdn/hisax/hfc_pci.c

@@ -1506,8 +1506,6 @@ hfcpci_bh(struct work_struct *work)
 	u_long	flags;
 //      struct PStack *stptr;
 
-	if (!cs)
-		return;
 	if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
 		if (!cs->hw.hfcpci.nt_mode)
 			switch (cs->dc.hfcpci.ph_state) {

drivers/isdn/hisax/hfc_sx.c

@@ -1255,8 +1255,6 @@ hfcsx_bh(struct work_struct *work)
 		container_of(work, struct IsdnCardState, tqueue);
 	u_long flags;
 
-	if (!cs)
-		return;
 	if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
 		if (!cs->hw.hfcsx.nt_mode)
 			switch (cs->dc.hfcsx.ph_state) {

drivers/isdn/hisax/icc.c

@@ -83,8 +83,6 @@ icc_bh(struct work_struct *work)
 		container_of(work, struct IsdnCardState, tqueue);
 	struct PStack *stptr;
 	
-	if (!cs)
-		return;
 	if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
 		if (cs->debug)
 			debugl1(cs, "D-Channel Busy cleared");

drivers/isdn/hisax/isac.c

@@ -86,8 +86,6 @@ isac_bh(struct work_struct *work)
 		container_of(work, struct IsdnCardState, tqueue);
 	struct PStack *stptr;
 	
-	if (!cs)
-		return;
 	if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
 		if (cs->debug)
 			debugl1(cs, "D-Channel Busy cleared");

drivers/isdn/hisax/isdnhdlc.h

@@ -1,70 +0,0 @@
-/*
- * isdnhdlc.h  --  General purpose ISDN HDLC decoder.
- *
- * Implementation of a HDLC decoder/encoder in software.
- * Neccessary because some ISDN devices don't have HDLC
- * controllers. Also included: a bit reversal table.
- *
- *Copyright (C) 2002    Wolfgang Mües      <wolfgang@iksw-muees.de>
- *		2001 	Frode Isaksen      <fisaksen@bewan.com>
- *              2001 	Kai Germaschewski  <kai.germaschewski@gmx.de>
- *
- *      This program is free software; you can redistribute it and/or modify
- *      it under the terms of the GNU General Public License as published by
- *      the Free Software Foundation; either version 2 of the License, or
- *      (at your option) any later version.
- *
- *      This program is distributed in the hope that it will be useful,
- *      but WITHOUT ANY WARRANTY; without even the implied warranty of
- *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *      GNU General Public License for more details.
- *
- *      You should have received a copy of the GNU General Public License
- *      along with this program; if not, write to the Free Software
- *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __ISDNHDLC_H__
-#define __ISDNHDLC_H__
-
-struct isdnhdlc_vars {
-	int bit_shift;
-	int hdlc_bits1;
-	int data_bits;
-	int ffbit_shift; 	// encoding only
-	int state;
-	int dstpos;
-
-	unsigned short crc;
-
-	unsigned char cbin;
-	unsigned char shift_reg;
-	unsigned char ffvalue;
-
-	unsigned int data_received:1; 	// set if transferring data
-	unsigned int dchannel:1; 	// set if D channel (send idle instead of flags)
-	unsigned int do_adapt56:1; 	// set if 56K adaptation
-	unsigned int do_closing:1; 	// set if in closing phase (need to send CRC + flag
-};
-
-
-/*
-  The return value from isdnhdlc_decode is
-  the frame length, 0 if no complete frame was decoded,
-  or a negative error number
-*/
-#define HDLC_FRAMING_ERROR     1
-#define HDLC_CRC_ERROR         2
-#define HDLC_LENGTH_ERROR      3
-
-extern void isdnhdlc_rcv_init (struct isdnhdlc_vars *hdlc, int do_adapt56);
-
-extern int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src, int slen,int *count,
-	                    unsigned char *dst, int dsize);
-
-extern void isdnhdlc_out_init (struct isdnhdlc_vars *hdlc,int is_d_channel,int do_adapt56);
-
-extern int isdnhdlc_encode (struct isdnhdlc_vars *hdlc,const unsigned char *src,unsigned short slen,int *count,
-	                    unsigned char *dst,int dsize);
-
-#endif /* __ISDNHDLC_H__ */

drivers/isdn/hisax/isdnl1.c

@@ -647,8 +647,6 @@ static struct FsmNode L1SFnList[] __initdata =
 	{ST_L1_F8, EV_TIMER_DEACT, l1_timer_deact},
 };
 
-#define L1S_FN_COUNT (sizeof(L1SFnList)/sizeof(struct FsmNode))
-
 #ifdef HISAX_UINTERFACE
 static void
 l1_deact_req_u(struct FsmInst *fi, int event, void *arg)
@@ -706,8 +704,6 @@ static struct FsmNode L1UFnList[] __initdata =
 	{ST_L1_RESET, EV_TIMER_DEACT, l1_timer_deact},
 };
 
-#define L1U_FN_COUNT (sizeof(L1UFnList)/sizeof(struct FsmNode))
-
 #endif
 
 static void
@@ -754,8 +750,6 @@ static struct FsmNode L1BFnList[] __initdata =
 	{ST_L1_WAIT_DEACT, EV_TIMER_DEACT, l1b_timer_deact},
 };
 
-#define L1B_FN_COUNT (sizeof(L1BFnList)/sizeof(struct FsmNode))
-
 int __init 
 Isdnl1New(void)
 {
@@ -765,7 +759,7 @@ Isdnl1New(void)
 	l1fsm_s.event_count = L1_EVENT_COUNT;
 	l1fsm_s.strEvent = strL1Event;
 	l1fsm_s.strState = strL1SState;
-	retval = FsmNew(&l1fsm_s, L1SFnList, L1S_FN_COUNT);
+	retval = FsmNew(&l1fsm_s, L1SFnList, ARRAY_SIZE(L1SFnList));
 	if (retval)
 		return retval;
 
@@ -773,7 +767,7 @@ Isdnl1New(void)
 	l1fsm_b.event_count = L1_EVENT_COUNT;
 	l1fsm_b.strEvent = strL1Event;
 	l1fsm_b.strState = strL1BState;
-	retval = FsmNew(&l1fsm_b, L1BFnList, L1B_FN_COUNT);
+	retval = FsmNew(&l1fsm_b, L1BFnList, ARRAY_SIZE(L1BFnList));
 	if (retval) {
 		FsmFree(&l1fsm_s);
 		return retval;
@@ -783,7 +777,7 @@ Isdnl1New(void)
 	l1fsm_u.event_count = L1_EVENT_COUNT;
 	l1fsm_u.strEvent = strL1Event;
 	l1fsm_u.strState = strL1UState;
-	retval = FsmNew(&l1fsm_u, L1UFnList, L1U_FN_COUNT);
+	retval = FsmNew(&l1fsm_u, L1UFnList, ARRAY_SIZE(L1UFnList));
 	if (retval) {
 		FsmFree(&l1fsm_s);
 		FsmFree(&l1fsm_b);

drivers/isdn/hisax/isdnl2.c

@@ -1623,8 +1623,6 @@ static struct FsmNode L2FnList[] __initdata =
 	{ST_L2_8, EV_L1_DEACTIVATE, l2_persistent_da},
 };
 
-#define L2_FN_COUNT (sizeof(L2FnList)/sizeof(struct FsmNode))
-
 static void
 isdnl2_l1l2(struct PStack *st, int pr, void *arg)
 {
@@ -1836,7 +1834,7 @@ Isdnl2New(void)
 	l2fsm.event_count = L2_EVENT_COUNT;
 	l2fsm.strEvent = strL2Event;
 	l2fsm.strState = strL2State;
-	return FsmNew(&l2fsm, L2FnList, L2_FN_COUNT);
+	return FsmNew(&l2fsm, L2FnList, ARRAY_SIZE(L2FnList));
 }
 
 void

drivers/isdn/hisax/isdnl3.c

@@ -543,8 +543,6 @@ static struct FsmNode L3FnList[] __initdata =
 };
 /* *INDENT-ON* */
 
-#define L3_FN_COUNT (sizeof(L3FnList)/sizeof(struct FsmNode))
-
 void
 l3_msg(struct PStack *st, int pr, void *arg)
 {
@@ -587,7 +585,7 @@ Isdnl3New(void)
 	l3fsm.event_count = L3_EVENT_COUNT;
 	l3fsm.strEvent = strL3Event;
 	l3fsm.strState = strL3State;
-	return FsmNew(&l3fsm, L3FnList, L3_FN_COUNT);
+	return FsmNew(&l3fsm, L3FnList, ARRAY_SIZE(L3FnList));
 }
 
 void

drivers/isdn/hisax/l3_1tr6.c

@@ -698,9 +698,6 @@ static struct stateentry downstl[] =
 	 CC_T308_2, l3_1tr6_t308_2},
 };
 
-#define DOWNSTL_LEN \
-	(sizeof(downstl) / sizeof(struct stateentry))
-
 static struct stateentry datastln1[] =
 {
 	{SBIT(0),
@@ -735,9 +732,6 @@ static struct stateentry datastln1[] =
 	 MT_N1_REL_ACK, l3_1tr6_rel_ack}
 };
 
-#define DATASTLN1_LEN \
-	(sizeof(datastln1) / sizeof(struct stateentry))
-
 static struct stateentry manstatelist[] =
 {
         {SBIT(2),
@@ -746,8 +740,6 @@ static struct stateentry manstatelist[] =
          DL_RELEASE | INDICATION, l3_1tr6_dl_release},
 };
  
-#define MANSLLEN \
-        (sizeof(manstatelist) / sizeof(struct stateentry))
 /* *INDENT-ON* */
 
 static void
@@ -840,11 +832,11 @@ up1tr6(struct PStack *st, int pr, void *arg)
 				mt = MT_N1_INVALID;
 			}
 		}
-		for (i = 0; i < DATASTLN1_LEN; i++)
+		for (i = 0; i < ARRAY_SIZE(datastln1); i++)
 			if ((mt == datastln1[i].primitive) &&
 			    ((1 << proc->state) & datastln1[i].state))
 				break;
-		if (i == DATASTLN1_LEN) {
+		if (i == ARRAY_SIZE(datastln1)) {
 			dev_kfree_skb(skb);
 			if (st->l3.debug & L3_DEB_STATE) {
 				sprintf(tmp, "up1tr6%sstate %d mt %x unhandled",
@@ -892,11 +884,11 @@ down1tr6(struct PStack *st, int pr, void *arg)
 		proc = arg;
 	}
 
-	for (i = 0; i < DOWNSTL_LEN; i++)
+	for (i = 0; i < ARRAY_SIZE(downstl); i++)
 		if ((pr == downstl[i].primitive) &&
 		    ((1 << proc->state) & downstl[i].state))
 			break;
-	if (i == DOWNSTL_LEN) {
+	if (i == ARRAY_SIZE(downstl)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			sprintf(tmp, "down1tr6 state %d prim %d unhandled",
 				proc->state, pr);
@@ -922,11 +914,11 @@ man1tr6(struct PStack *st, int pr, void *arg)
                 printk(KERN_ERR "HiSax man1tr6 without proc pr=%04x\n", pr);
                 return;
         }
-        for (i = 0; i < MANSLLEN; i++)
+        for (i = 0; i < ARRAY_SIZE(manstatelist); i++)
                 if ((pr == manstatelist[i].primitive) &&
                     ((1 << proc->state) & manstatelist[i].state))
                         break;
-        if (i == MANSLLEN) {
+        if (i == ARRAY_SIZE(manstatelist)) {
                 if (st->l3.debug & L3_DEB_STATE) {
                         l3_debug(st, "cr %d man1tr6 state %d prim %d unhandled",
                                 proc->callref & 0x7f, proc->state, pr);

drivers/isdn/hisax/l3dss1.c

@@ -2820,9 +2820,6 @@ static struct stateentry downstatelist[] =
 	 CC_T309, l3dss1_dl_release},
 };
 
-#define DOWNSLLEN \
-	(sizeof(downstatelist) / sizeof(struct stateentry))
-
 static struct stateentry datastatelist[] =
 {
 	{ALL_STATES,
@@ -2875,9 +2872,6 @@ static struct stateentry datastatelist[] =
 	 MT_RESUME_REJECT, l3dss1_resume_rej},
 };
 
-#define DATASLLEN \
-	(sizeof(datastatelist) / sizeof(struct stateentry))
-
 static struct stateentry globalmes_list[] =
 {
 	{ALL_STATES,
@@ -2888,8 +2882,6 @@ static struct stateentry globalmes_list[] =
 	 MT_RESTART_ACKNOWLEDGE, l3dss1_restart_ack},
 */
 };
-#define GLOBALM_LEN \
-	(sizeof(globalmes_list) / sizeof(struct stateentry))
 
 static struct stateentry manstatelist[] =
 {
@@ -2903,8 +2895,6 @@ static struct stateentry manstatelist[] =
          DL_RELEASE | INDICATION, l3dss1_dl_release},
 };
 
-#define MANSLLEN \
-        (sizeof(manstatelist) / sizeof(struct stateentry))
 /* *INDENT-ON* */
 
 
@@ -2918,11 +2908,11 @@ global_handler(struct PStack *st, int mt, struct sk_buff *skb)
 	struct l3_process *proc = st->l3.global;
 
 	proc->callref = skb->data[2]; /* cr flag */
-	for (i = 0; i < GLOBALM_LEN; i++)
+	for (i = 0; i < ARRAY_SIZE(globalmes_list); i++)
 		if ((mt == globalmes_list[i].primitive) &&
 		    ((1 << proc->state) & globalmes_list[i].state))
 			break;
-	if (i == GLOBALM_LEN) {
+	if (i == ARRAY_SIZE(globalmes_list)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			l3_debug(st, "dss1 global state %d mt %x unhandled",
 				proc->state, mt);
@@ -3097,11 +3087,11 @@ dss1up(struct PStack *st, int pr, void *arg)
 	}
 	if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL) 
 	  l3dss1_deliver_display(proc, pr, p); /* Display IE included */
-	for (i = 0; i < DATASLLEN; i++)
+	for (i = 0; i < ARRAY_SIZE(datastatelist); i++)
 		if ((mt == datastatelist[i].primitive) &&
 		    ((1 << proc->state) & datastatelist[i].state))
 			break;
-	if (i == DATASLLEN) {
+	if (i == ARRAY_SIZE(datastatelist)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			l3_debug(st, "dss1up%sstate %d mt %#x unhandled",
 				(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
@@ -3156,11 +3146,11 @@ dss1down(struct PStack *st, int pr, void *arg)
 		return;
 	}  
 
-	for (i = 0; i < DOWNSLLEN; i++)
+	for (i = 0; i < ARRAY_SIZE(downstatelist); i++)
 		if ((pr == downstatelist[i].primitive) &&
 		    ((1 << proc->state) & downstatelist[i].state))
 			break;
-	if (i == DOWNSLLEN) {
+	if (i == ARRAY_SIZE(downstatelist)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			l3_debug(st, "dss1down state %d prim %#x unhandled",
 				proc->state, pr);
@@ -3184,11 +3174,11 @@ dss1man(struct PStack *st, int pr, void *arg)
                 printk(KERN_ERR "HiSax dss1man without proc pr=%04x\n", pr);
                 return;
         }
-        for (i = 0; i < MANSLLEN; i++)
+        for (i = 0; i < ARRAY_SIZE(manstatelist); i++)
                 if ((pr == manstatelist[i].primitive) &&
                     ((1 << proc->state) & manstatelist[i].state))
                         break;
-        if (i == MANSLLEN) {
+        if (i == ARRAY_SIZE(manstatelist)) {
                 if (st->l3.debug & L3_DEB_STATE) {
                         l3_debug(st, "cr %d dss1man state %d prim %#x unhandled",
                                 proc->callref & 0x7f, proc->state, pr);

drivers/isdn/hisax/l3ni1.c

@@ -2755,9 +2755,6 @@ static struct stateentry downstatelist[] =
 	 CC_TSPID, l3ni1_spid_tout },
 };
 
-#define DOWNSLLEN \
-	(sizeof(downstatelist) / sizeof(struct stateentry))
-
 static struct stateentry datastatelist[] =
 {
 	{ALL_STATES,
@@ -2810,9 +2807,6 @@ static struct stateentry datastatelist[] =
 	 MT_RESUME_REJECT, l3ni1_resume_rej},
 };
 
-#define DATASLLEN \
-	(sizeof(datastatelist) / sizeof(struct stateentry))
-
 static struct stateentry globalmes_list[] =
 {
 	{ALL_STATES,
@@ -2825,8 +2819,6 @@ static struct stateentry globalmes_list[] =
 	{ SBIT( 0 ), MT_DL_ESTABLISHED, l3ni1_spid_send },
 	{ SBIT( 20 ) | SBIT( 21 ) | SBIT( 22 ), MT_INFORMATION, l3ni1_spid_epid },
 };
-#define GLOBALM_LEN \
-	(sizeof(globalmes_list) / sizeof(struct stateentry))
 
 static struct stateentry manstatelist[] =
 {
@@ -2840,8 +2832,6 @@ static struct stateentry manstatelist[] =
          DL_RELEASE | INDICATION, l3ni1_dl_release},
 };
 
-#define MANSLLEN \
-        (sizeof(manstatelist) / sizeof(struct stateentry))
 /* *INDENT-ON* */
 
 
@@ -2858,11 +2848,11 @@ global_handler(struct PStack *st, int mt, struct sk_buff *skb)
 		proc->callref = skb->data[2]; /* cr flag */
 	else
 		proc->callref = 0;
-	for (i = 0; i < GLOBALM_LEN; i++)
+	for (i = 0; i < ARRAY_SIZE(globalmes_list); i++)
 		if ((mt == globalmes_list[i].primitive) &&
 		    ((1 << proc->state) & globalmes_list[i].state))
 			break;
-	if (i == GLOBALM_LEN) {
+	if (i == ARRAY_SIZE(globalmes_list)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			l3_debug(st, "ni1 global state %d mt %x unhandled",
 				proc->state, mt);
@@ -3049,11 +3039,11 @@ ni1up(struct PStack *st, int pr, void *arg)
 	}
 	if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL) 
 	  l3ni1_deliver_display(proc, pr, p); /* Display IE included */
-	for (i = 0; i < DATASLLEN; i++)
+	for (i = 0; i < ARRAY_SIZE(datastatelist); i++)
 		if ((mt == datastatelist[i].primitive) &&
 		    ((1 << proc->state) & datastatelist[i].state))
 			break;
-	if (i == DATASLLEN) {
+	if (i == ARRAY_SIZE(datastatelist)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			l3_debug(st, "ni1up%sstate %d mt %#x unhandled",
 				(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
@@ -3108,11 +3098,11 @@ ni1down(struct PStack *st, int pr, void *arg)
 		return;
 	}  
 
-	for (i = 0; i < DOWNSLLEN; i++)
+	for (i = 0; i < ARRAY_SIZE(downstatelist); i++)
 		if ((pr == downstatelist[i].primitive) &&
 		    ((1 << proc->state) & downstatelist[i].state))
 			break;
-	if (i == DOWNSLLEN) {
+	if (i == ARRAY_SIZE(downstatelist)) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			l3_debug(st, "ni1down state %d prim %#x unhandled",
 				proc->state, pr);
@@ -3136,11 +3126,11 @@ ni1man(struct PStack *st, int pr, void *arg)
                 printk(KERN_ERR "HiSax ni1man without proc pr=%04x\n", pr);
                 return;
         }
-        for (i = 0; i < MANSLLEN; i++)
+        for (i = 0; i < ARRAY_SIZE(manstatelist); i++)
                 if ((pr == manstatelist[i].primitive) &&
                     ((1 << proc->state) & manstatelist[i].state))
                         break;
-        if (i == MANSLLEN) {
+        if (i == ARRAY_SIZE(manstatelist)) {
                 if (st->l3.debug & L3_DEB_STATE) {
                         l3_debug(st, "cr %d ni1man state %d prim %#x unhandled",
                                 proc->callref & 0x7f, proc->state, pr);

drivers/isdn/hisax/q931.c

@@ -140,7 +140,7 @@ struct MessageType {
 	}
 };
 
-#define MTSIZE sizeof(mtlist)/sizeof(struct MessageType)
+#define MTSIZE ARRAY_SIZE(mtlist)
 
 static
 struct MessageType mt_n0[] =
@@ -157,7 +157,7 @@ struct MessageType mt_n0[] =
 	{MT_N0_CLO_ACK, "CLOse ACKnowledge"}
 };
 
-#define MT_N0_LEN (sizeof(mt_n0) / sizeof(struct MessageType))
+#define MT_N0_LEN ARRAY_SIZE(mt_n0)
 
 static
 struct MessageType mt_n1[] =
@@ -194,7 +194,7 @@ struct MessageType mt_n1[] =
 	{MT_N1_STAT, "STATus"}
 };
 
-#define MT_N1_LEN (sizeof(mt_n1) / sizeof(struct MessageType))
+#define MT_N1_LEN ARRAY_SIZE(mt_n1)
 
 
 static int
@@ -438,7 +438,7 @@ struct CauseValue {
 	},
 };
 
-#define CVSIZE sizeof(cvlist)/sizeof(struct CauseValue)
+#define CVSIZE ARRAY_SIZE(cvlist)
 
 static
 int
@@ -516,7 +516,7 @@ struct MessageType cause_1tr6[] =
 	{CAUSE_UserInfoDiscarded, "User Info Discarded"}
 };
 
-static int cause_1tr6_len = (sizeof(cause_1tr6) / sizeof(struct MessageType));
+static int cause_1tr6_len = ARRAY_SIZE(cause_1tr6);
 
 static int
 prcause_1tr6(char *dest, u_char * p)
@@ -865,7 +865,7 @@ struct DTag { /* Display tags */
 	{ 0x96, "Redirection name" },
 	{ 0x9e, "Text" },
 };
-#define DTAGSIZE sizeof(dtaglist)/sizeof(struct DTag)
+#define DTAGSIZE ARRAY_SIZE(dtaglist)
 
 static int
 disptext_ni1(char *dest, u_char * p)
@@ -1074,7 +1074,7 @@ struct InformationElement {
 };
 
 
-#define IESIZE sizeof(ielist)/sizeof(struct InformationElement)
+#define IESIZE ARRAY_SIZE(ielist)
 
 static
 struct InformationElement ielist_ni1[] = {
@@ -1102,7 +1102,7 @@ struct InformationElement ielist_ni1[] = {
 };
 
 
-#define IESIZE_NI1 sizeof(ielist_ni1)/sizeof(struct InformationElement)
+#define IESIZE_NI1 ARRAY_SIZE(ielist_ni1)
 
 static
 struct InformationElement ielist_ni1_cs5[] = {
@@ -1110,14 +1110,14 @@ struct InformationElement ielist_ni1_cs5[] = {
 	{ 0x2a, "Display text", disptext_ni1 },
 };
 
-#define IESIZE_NI1_CS5 sizeof(ielist_ni1_cs5)/sizeof(struct InformationElement)
+#define IESIZE_NI1_CS5 ARRAY_SIZE(ielist_ni1_cs5)
 
 static
 struct InformationElement ielist_ni1_cs6[] = {
 	{ 0x7b, "Call appearance", general_ni1 },
 };
 
-#define IESIZE_NI1_CS6 sizeof(ielist_ni1_cs6)/sizeof(struct InformationElement)
+#define IESIZE_NI1_CS6 ARRAY_SIZE(ielist_ni1_cs6)
 
 static struct InformationElement we_0[] =
 {
@@ -1133,7 +1133,7 @@ static struct InformationElement we_0[] =
 	{WE0_userInfo, "User Info", general}
 };
 
-#define WE_0_LEN (sizeof(we_0) / sizeof(struct InformationElement))
+#define WE_0_LEN ARRAY_SIZE(we_0)
 
 static struct InformationElement we_6[] =
 {
@@ -1145,7 +1145,7 @@ static struct InformationElement we_6[] =
 	{WE6_statusCalled, "Status Called", general},
 	{WE6_addTransAttr, "Additional Transmission Attributes", general}
 };
-#define WE_6_LEN (sizeof(we_6) / sizeof(struct InformationElement))
+#define WE_6_LEN ARRAY_SIZE(we_6)
 
 int
 QuickHex(char *txt, u_char * p, int cnt)

drivers/isdn/hisax/st5481.h

@@ -226,7 +226,7 @@ printk(KERN_WARNING "%s:%s: " format "\n" , __FILE__,  __func__ , ## arg)
 #define INFO(format, arg...) \
 printk(KERN_INFO "%s:%s: " format "\n" , __FILE__,  __func__ , ## arg)
 
-#include "isdnhdlc.h"
+#include <linux/isdn/hdlc.h>
 #include "fsm.h"
 #include "hisax_if.h"
 #include <linux/skbuff.h>

drivers/isdn/hisax/st5481_b.c

@@ -218,7 +218,10 @@ static void st5481B_mode(struct st5481_bcs *bcs, int mode)
 	if (bcs->mode != L1_MODE_NULL) {
 		// Open the B channel
 		if (bcs->mode != L1_MODE_TRANS) {
-			isdnhdlc_out_init(&b_out->hdlc_state, 0, bcs->mode == L1_MODE_HDLC_56K);
+			u32 features = HDLC_BITREVERSE;
+			if (bcs->mode == L1_MODE_HDLC_56K)
+				features |= HDLC_56KBIT;
+			isdnhdlc_out_init(&b_out->hdlc_state, features);
 		}
 		st5481_usb_pipe_reset(adapter, (bcs->channel+1)*2, NULL, NULL);
 	

drivers/isdn/hisax/st5481_d.c

@@ -417,7 +417,7 @@ static void dout_start_xmit(struct FsmInst *fsm, int event, void *arg)
 
 	DBG(2,"len=%d",skb->len);
 
-	isdnhdlc_out_init(&d_out->hdlc_state, 1, 0);
+	isdnhdlc_out_init(&d_out->hdlc_state, HDLC_DCHANNEL | HDLC_BITREVERSE);
 
 	if (test_and_set_bit(buf_nr, &d_out->busy)) {
 		WARNING("ep %d urb %d busy %#lx", EP_D_OUT, buf_nr, d_out->busy);

drivers/isdn/hisax/st5481_usb.c

@@ -637,10 +637,13 @@ void st5481_in_mode(struct st5481_in *in, int mode)
 	usb_unlink_urb(in->urb[1]);
 
 	if (in->mode != L1_MODE_NULL) {
-		if (in->mode != L1_MODE_TRANS)
-			isdnhdlc_rcv_init(&in->hdlc_state,
-				in->mode == L1_MODE_HDLC_56K);
-		
+		if (in->mode != L1_MODE_TRANS) {
+			u32 features = HDLC_BITREVERSE;
+
+			if (in->mode == L1_MODE_HDLC_56K)
+				features |= HDLC_56KBIT;
+			isdnhdlc_rcv_init(&in->hdlc_state, features);
+		}
 		st5481_usb_pipe_reset(in->adapter, in->ep, NULL, NULL);
 		st5481_usb_device_ctrl_msg(in->adapter, in->counter,
 					   in->packet_size,

drivers/isdn/hisax/tei.c

@@ -447,8 +447,6 @@ static struct FsmNode TeiFnList[] __initdata =
 	{ST_TEI_IDVERIFY, EV_CHKREQ, tei_id_chk_req},
 };
 
-#define TEI_FN_COUNT (sizeof(TeiFnList)/sizeof(struct FsmNode))
-
 int __init
 TeiNew(void)
 {
@@ -456,7 +454,7 @@ TeiNew(void)
 	teifsm.event_count = TEI_EVENT_COUNT;
 	teifsm.strEvent = strTeiEvent;
 	teifsm.strState = strTeiState;
-	return FsmNew(&teifsm, TeiFnList, TEI_FN_COUNT);
+	return FsmNew(&teifsm, TeiFnList, ARRAY_SIZE(TeiFnList));
 }
 
 void

drivers/isdn/hisax/w6692.c

@@ -105,8 +105,6 @@ W6692_bh(struct work_struct *work)
 		container_of(work, struct IsdnCardState, tqueue);
 	struct PStack *stptr;
 
-	if (!cs)
-		return;
 	if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
 		if (cs->debug)
 			debugl1(cs, "D-Channel Busy cleared");

drivers/isdn/i4l/Kconfig

@@ -2,6 +2,8 @@
 # Old ISDN4Linux config
 #
 
+if ISDN_I4L
+
 config ISDN_PPP
 	bool "Support synchronous PPP"
 	depends on INET
@@ -135,3 +137,12 @@ source "drivers/isdn/act2000/Kconfig"
 source "drivers/isdn/hysdn/Kconfig"
 
 endmenu
+# end ISDN_I4L
+endif
+
+config ISDN_HDLC
+	tristate 
+	depends on HISAX_ST5481
+	select CRC_CCITT
+	select BITREVERSE
+

drivers/isdn/i4l/Makefile

@@ -4,6 +4,7 @@
 
 obj-$(CONFIG_ISDN_I4L)		+= isdn.o
 obj-$(CONFIG_ISDN_PPP_BSDCOMP)	+= isdn_bsdcomp.o
+obj-$(CONFIG_ISDN_HDLC)		+= isdnhdlc.o
 
 # Multipart objects.
 

drivers/isdn/hisax/isdnhdlc.c → drivers/isdn/i4l/isdnhdlc.c

@@ -1,29 +1,32 @@
 /*
  * isdnhdlc.c  --  General purpose ISDN HDLC decoder.
  *
- *Copyright (C) 2002	Wolfgang Mües      <wolfgang@iksw-muees.de>
- *		2001 	Frode Isaksen      <fisaksen@bewan.com>
- *              2001 	Kai Germaschewski  <kai.germaschewski@gmx.de>
+ * Copyright (C)
+ *	2009	Karsten Keil		<keil@b1-systems.de>
+ *	2002	Wolfgang Mües		<wolfgang@iksw-muees.de>
+ *	2001	Frode Isaksen		<fisaksen@bewan.com>
+ *      2001	Kai Germaschewski	<kai.germaschewski@gmx.de>
  *
- *      This program is free software; you can redistribute it and/or modify
- *      it under the terms of the GNU General Public License as published by
- *      the Free Software Foundation; either version 2 of the License, or
- *      (at your option) any later version.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
- *      This program is distributed in the hope that it will be useful,
- *      but WITHOUT ANY WARRANTY; without even the implied warranty of
- *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *      GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- *      You should have received a copy of the GNU General Public License
- *      along with this program; if not, write to the Free Software
- *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/crc-ccitt.h>
-#include "isdnhdlc.h"
+#include <linux/isdn/hdlc.h>
+#include <linux/bitrev.h>
 
 /*-------------------------------------------------------------------*/
 
@@ -36,44 +39,32 @@ MODULE_LICENSE("GPL");
 /*-------------------------------------------------------------------*/
 
 enum {
-	HDLC_FAST_IDLE,HDLC_GET_FLAG_B0,HDLC_GETFLAG_B1A6,HDLC_GETFLAG_B7,
-	HDLC_GET_DATA,HDLC_FAST_FLAG
+	HDLC_FAST_IDLE, HDLC_GET_FLAG_B0, HDLC_GETFLAG_B1A6, HDLC_GETFLAG_B7,
+	HDLC_GET_DATA, HDLC_FAST_FLAG
 };
 
 enum {
-	HDLC_SEND_DATA,HDLC_SEND_CRC1,HDLC_SEND_FAST_FLAG,
-	HDLC_SEND_FIRST_FLAG,HDLC_SEND_CRC2,HDLC_SEND_CLOSING_FLAG,
-	HDLC_SEND_IDLE1,HDLC_SEND_FAST_IDLE,HDLC_SENDFLAG_B0,
-	HDLC_SENDFLAG_B1A6,HDLC_SENDFLAG_B7,STOPPED
+	HDLC_SEND_DATA, HDLC_SEND_CRC1, HDLC_SEND_FAST_FLAG,
+	HDLC_SEND_FIRST_FLAG, HDLC_SEND_CRC2, HDLC_SEND_CLOSING_FLAG,
+	HDLC_SEND_IDLE1, HDLC_SEND_FAST_IDLE, HDLC_SENDFLAG_B0,
+	HDLC_SENDFLAG_B1A6, HDLC_SENDFLAG_B7, STOPPED, HDLC_SENDFLAG_ONE
 };
 
-void isdnhdlc_rcv_init (struct isdnhdlc_vars *hdlc, int do_adapt56)
+void isdnhdlc_rcv_init(struct isdnhdlc_vars *hdlc, u32 features)
 {
-   	hdlc->bit_shift = 0;
-	hdlc->hdlc_bits1 = 0;
-	hdlc->data_bits = 0;
-	hdlc->ffbit_shift = 0;
-	hdlc->data_received = 0;
+	memset(hdlc, 0, sizeof(struct isdnhdlc_vars));
 	hdlc->state = HDLC_GET_DATA;
-	hdlc->do_adapt56 = do_adapt56;
-	hdlc->dchannel = 0;
-	hdlc->crc = 0;
-	hdlc->cbin = 0;
-	hdlc->shift_reg = 0;
-	hdlc->ffvalue = 0;
-	hdlc->dstpos = 0;
+	if (features & HDLC_56KBIT)
+		hdlc->do_adapt56 = 1;
+	if (features & HDLC_BITREVERSE)
+		hdlc->do_bitreverse = 1;
 }
+EXPORT_SYMBOL(isdnhdlc_out_init);
 
-void isdnhdlc_out_init (struct isdnhdlc_vars *hdlc, int is_d_channel, int do_adapt56)
+void isdnhdlc_out_init(struct isdnhdlc_vars *hdlc, u32 features)
 {
-   	hdlc->bit_shift = 0;
-	hdlc->hdlc_bits1 = 0;
-	hdlc->data_bits = 0;
-	hdlc->ffbit_shift = 0;
-	hdlc->data_received = 0;
-	hdlc->do_closing = 0;
-	hdlc->ffvalue = 0;
-	if (is_d_channel) {
+	memset(hdlc, 0, sizeof(struct isdnhdlc_vars));
+	if (features & HDLC_DCHANNEL) {
 		hdlc->dchannel = 1;
 		hdlc->state = HDLC_SEND_FIRST_FLAG;
 	} else {
@@ -82,16 +73,32 @@ void isdnhdlc_out_init (struct isdnhdlc_vars *hdlc, int is_d_channel, int do_ada
 		hdlc->ffvalue = 0x7e;
 	}
 	hdlc->cbin = 0x7e;
-	hdlc->bit_shift = 0;
-	if(do_adapt56){
+	if (features & HDLC_56KBIT) {
 		hdlc->do_adapt56 = 1;
-		hdlc->data_bits = 0;
 		hdlc->state = HDLC_SENDFLAG_B0;
-	} else {
-		hdlc->do_adapt56 = 0;
+	} else
 		hdlc->data_bits = 8;
+	if (features & HDLC_BITREVERSE)
+		hdlc->do_bitreverse = 1;
+}
+EXPORT_SYMBOL(isdnhdlc_rcv_init);
+
+static int
+check_frame(struct isdnhdlc_vars *hdlc)
+{
+	int status;
+
+	if (hdlc->dstpos < 2) 	/* too small - framing error */
+		status = -HDLC_FRAMING_ERROR;
+	else if (hdlc->crc != 0xf0b8)	/* crc error */
+		status = -HDLC_CRC_ERROR;
+	else {
+		/* remove CRC */
+		hdlc->dstpos -= 2;
+		/* good frame */
+		status = hdlc->dstpos;
 	}
-	hdlc->shift_reg = 0;
+	return status;
 }
 
 /*
@@ -121,40 +128,67 @@ void isdnhdlc_out_init (struct isdnhdlc_vars *hdlc, int is_d_channel, int do_ada
   returns - number of decoded bytes in the destination buffer and status
   flag.
  */
-int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
-		     int slen, int *count, unsigned char *dst, int dsize)
+int isdnhdlc_decode(struct isdnhdlc_vars *hdlc, const u8 *src, int slen,
+	int *count, u8 *dst, int dsize)
 {
-	int status=0;
+	int status = 0;
 
-	static const unsigned char fast_flag[]={
-		0x00,0x00,0x00,0x20,0x30,0x38,0x3c,0x3e,0x3f
+	static const unsigned char fast_flag[] = {
+		0x00, 0x00, 0x00, 0x20, 0x30, 0x38, 0x3c, 0x3e, 0x3f
 	};
 
-	static const unsigned char fast_flag_value[]={
-		0x00,0x7e,0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f
+	static const unsigned char fast_flag_value[] = {
+		0x00, 0x7e, 0xfc, 0xf9, 0xf3, 0xe7, 0xcf, 0x9f, 0x3f
 	};
 
-	static const unsigned char fast_abort[]={
-		0x00,0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff
+	static const unsigned char fast_abort[] = {
+		0x00, 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff
 	};
 
+#define handle_fast_flag(h) \
+	do {\
+		if (h->cbin == fast_flag[h->bit_shift]) {\
+			h->ffvalue = fast_flag_value[h->bit_shift];\
+			h->state = HDLC_FAST_FLAG;\
+			h->ffbit_shift = h->bit_shift;\
+			h->bit_shift = 1;\
+		} else {\
+			h->state = HDLC_GET_DATA;\
+			h->data_received = 0;\
+		} \
+	} while (0)
+
+#define handle_abort(h) \
+	do {\
+		h->shift_reg = fast_abort[h->ffbit_shift - 1];\
+		h->hdlc_bits1 = h->ffbit_shift - 2;\
+		if (h->hdlc_bits1 < 0)\
+			h->hdlc_bits1 = 0;\
+		h->data_bits = h->ffbit_shift - 1;\
+		h->state = HDLC_GET_DATA;\
+		h->data_received = 0;\
+	} while (0)
+
 	*count = slen;
 
-	while(slen > 0){
-		if(hdlc->bit_shift==0){
-			hdlc->cbin = *src++;
+	while (slen > 0) {
+		if (hdlc->bit_shift == 0) {
+			/* the code is for bitreverse streams */
+			if (hdlc->do_bitreverse == 0)
+				hdlc->cbin = bitrev8(*src++);
+			else
+				hdlc->cbin = *src++;
 			slen--;
 			hdlc->bit_shift = 8;
-			if(hdlc->do_adapt56){
-				hdlc->bit_shift --;
-			}
+			if (hdlc->do_adapt56)
+				hdlc->bit_shift--;
 		}
 
-		switch(hdlc->state){
+		switch (hdlc->state) {
 		case STOPPED:
 			return 0;
 		case HDLC_FAST_IDLE:
-			if(hdlc->cbin == 0xff){
+			if (hdlc->cbin == 0xff) {
 				hdlc->bit_shift = 0;
 				break;
 			}
@@ -163,32 +197,30 @@ int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			hdlc->bit_shift = 8;
 			break;
 		case HDLC_GET_FLAG_B0:
-			if(!(hdlc->cbin & 0x80)) {
+			if (!(hdlc->cbin & 0x80)) {
 				hdlc->state = HDLC_GETFLAG_B1A6;
 				hdlc->hdlc_bits1 = 0;
 			} else {
-				if(!hdlc->do_adapt56){
-					if(++hdlc->hdlc_bits1 >=8 ) if(hdlc->bit_shift==1)
+				if ((!hdlc->do_adapt56) &&
+				    (++hdlc->hdlc_bits1 >= 8) &&
+				    (hdlc->bit_shift == 1))
 						hdlc->state = HDLC_FAST_IDLE;
-				}
 			}
-			hdlc->cbin<<=1;
-			hdlc->bit_shift --;
+			hdlc->cbin <<= 1;
+			hdlc->bit_shift--;
 			break;
 		case HDLC_GETFLAG_B1A6:
-			if(hdlc->cbin & 0x80){
+			if (hdlc->cbin & 0x80) {
 				hdlc->hdlc_bits1++;
-				if(hdlc->hdlc_bits1==6){
+				if (hdlc->hdlc_bits1 == 6)
 					hdlc->state = HDLC_GETFLAG_B7;
-				}
-			} else {
+			} else
 				hdlc->hdlc_bits1 = 0;
-			}
-			hdlc->cbin<<=1;
-			hdlc->bit_shift --;
+			hdlc->cbin <<= 1;
+			hdlc->bit_shift--;
 			break;
 		case HDLC_GETFLAG_B7:
-			if(hdlc->cbin & 0x80) {
+			if (hdlc->cbin & 0x80) {
 				hdlc->state = HDLC_GET_FLAG_B0;
 			} else {
 				hdlc->state = HDLC_GET_DATA;
@@ -198,74 +230,55 @@ int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
 				hdlc->data_bits = 0;
 				hdlc->data_received = 0;
 			}
-			hdlc->cbin<<=1;
-			hdlc->bit_shift --;
+			hdlc->cbin <<= 1;
+			hdlc->bit_shift--;
 			break;
 		case HDLC_GET_DATA:
-			if(hdlc->cbin & 0x80){
+			if (hdlc->cbin & 0x80) {
 				hdlc->hdlc_bits1++;
-				switch(hdlc->hdlc_bits1){
+				switch (hdlc->hdlc_bits1) {
 				case 6:
 					break;
 				case 7:
-					if(hdlc->data_received) {
-						// bad frame
+					if (hdlc->data_received)
+						/* bad frame */
 						status = -HDLC_FRAMING_ERROR;
-					}
-					if(!hdlc->do_adapt56){
-						if(hdlc->cbin==fast_abort[hdlc->bit_shift+1]){
-							hdlc->state = HDLC_FAST_IDLE;
-							hdlc->bit_shift=1;
+					if (!hdlc->do_adapt56) {
+						if (hdlc->cbin == fast_abort
+						    [hdlc->bit_shift + 1]) {
+							hdlc->state =
+								HDLC_FAST_IDLE;
+							hdlc->bit_shift = 1;
 							break;
 						}
-					} else {
+					} else
 						hdlc->state = HDLC_GET_FLAG_B0;
-					}
 					break;
 				default:
-					hdlc->shift_reg>>=1;
+					hdlc->shift_reg >>= 1;
 					hdlc->shift_reg |= 0x80;
 					hdlc->data_bits++;
 					break;
 				}
 			} else {
-				switch(hdlc->hdlc_bits1){
+				switch (hdlc->hdlc_bits1) {
 				case 5:
 					break;
 				case 6:
-					if(hdlc->data_received){
-						if (hdlc->dstpos < 2) {
-							status = -HDLC_FRAMING_ERROR;
-						} else if (hdlc->crc != 0xf0b8){
-							// crc error
-							status = -HDLC_CRC_ERROR;
-						} else {
-							// remove CRC
-							hdlc->dstpos -= 2;
-							// good frame
-							status = hdlc->dstpos;
-						}
-					}
+					if (hdlc->data_received)
+						status = check_frame(hdlc);
 					hdlc->crc = 0xffff;
 					hdlc->shift_reg = 0;
 					hdlc->data_bits = 0;
-					if(!hdlc->do_adapt56){
-						if(hdlc->cbin==fast_flag[hdlc->bit_shift]){
-							hdlc->ffvalue = fast_flag_value[hdlc->bit_shift];
-							hdlc->state = HDLC_FAST_FLAG;
-							hdlc->ffbit_shift = hdlc->bit_shift;
-							hdlc->bit_shift = 1;
-						} else {
-							hdlc->state = HDLC_GET_DATA;
-							hdlc->data_received = 0;
-						}
-					} else {
+					if (!hdlc->do_adapt56)
+						handle_fast_flag(hdlc);
+					else {
 						hdlc->state = HDLC_GET_DATA;
 						hdlc->data_received = 0;
 					}
 					break;
 				default:
-					hdlc->shift_reg>>=1;
+					hdlc->shift_reg >>= 1;
 					hdlc->data_bits++;
 					break;
 				}
@@ -278,16 +291,17 @@ int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
 				hdlc->bit_shift--;
 				return status;
 			}
-			if(hdlc->data_bits==8){
+			if (hdlc->data_bits == 8) {
 				hdlc->data_bits = 0;
 				hdlc->data_received = 1;
-				hdlc->crc = crc_ccitt_byte(hdlc->crc, hdlc->shift_reg);
+				hdlc->crc = crc_ccitt_byte(hdlc->crc,
+						hdlc->shift_reg);
 
-				// good byte received
-				if (hdlc->dstpos < dsize) {
+				/* good byte received */
+				if (hdlc->dstpos < dsize)
 					dst[hdlc->dstpos++] = hdlc->shift_reg;
-				} else {
-					// frame too long
+				else {
+					/* frame too long */
 					status = -HDLC_LENGTH_ERROR;
 					hdlc->dstpos = 0;
 				}
@@ -296,24 +310,18 @@ int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			hdlc->bit_shift--;
 			break;
 		case HDLC_FAST_FLAG:
-			if(hdlc->cbin==hdlc->ffvalue){
+			if (hdlc->cbin == hdlc->ffvalue) {
 				hdlc->bit_shift = 0;
 				break;
 			} else {
-				if(hdlc->cbin == 0xff){
+				if (hdlc->cbin == 0xff) {
 					hdlc->state = HDLC_FAST_IDLE;
-					hdlc->bit_shift=0;
-				} else if(hdlc->ffbit_shift==8){
+					hdlc->bit_shift = 0;
+				} else if (hdlc->ffbit_shift == 8) {
 					hdlc->state = HDLC_GETFLAG_B7;
 					break;
-				} else {
-					hdlc->shift_reg = fast_abort[hdlc->ffbit_shift-1];
-					hdlc->hdlc_bits1 = hdlc->ffbit_shift-2;
-					if(hdlc->hdlc_bits1<0)hdlc->hdlc_bits1 = 0;
-					hdlc->data_bits = hdlc->ffbit_shift-1;
-					hdlc->state = HDLC_GET_DATA;
-					hdlc->data_received = 0;
-				}
+				} else
+					handle_abort(hdlc);
 			}
 			break;
 		default:
@@ -323,7 +331,7 @@ int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
 	*count -= slen;
 	return 0;
 }
-
+EXPORT_SYMBOL(isdnhdlc_decode);
 /*
   isdnhdlc_encode - encodes HDLC frames to a transparent bit stream.
 
@@ -343,59 +351,70 @@ int isdnhdlc_decode (struct isdnhdlc_vars *hdlc, const unsigned char *src,
   dsize - destination buffer size
   returns - number of encoded bytes in the destination buffer
 */
-int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
-		unsigned short slen, int *count,
-		unsigned char *dst, int dsize)
+int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const u8 *src, u16 slen,
+	int *count, u8 *dst, int dsize)
 {
 	static const unsigned char xfast_flag_value[] = {
-		0x7e,0x3f,0x9f,0xcf,0xe7,0xf3,0xf9,0xfc,0x7e
+		0x7e, 0x3f, 0x9f, 0xcf, 0xe7, 0xf3, 0xf9, 0xfc, 0x7e
 	};
 
 	int len = 0;
 
 	*count = slen;
 
+	/* special handling for one byte frames */
+	if ((slen == 1) && (hdlc->state == HDLC_SEND_FAST_FLAG))
+		hdlc->state = HDLC_SENDFLAG_ONE;
 	while (dsize > 0) {
-		if(hdlc->bit_shift==0){
-			if(slen && !hdlc->do_closing){
+		if (hdlc->bit_shift == 0) {
+			if (slen && !hdlc->do_closing) {
 				hdlc->shift_reg = *src++;
 				slen--;
 				if (slen == 0)
-					hdlc->do_closing = 1;  /* closing sequence, CRC + flag(s) */
+					/* closing sequence, CRC + flag(s) */
+					hdlc->do_closing = 1;
 				hdlc->bit_shift = 8;
 			} else {
-				if(hdlc->state == HDLC_SEND_DATA){
-					if(hdlc->data_received){
+				if (hdlc->state == HDLC_SEND_DATA) {
+					if (hdlc->data_received) {
 						hdlc->state = HDLC_SEND_CRC1;
 						hdlc->crc ^= 0xffff;
 						hdlc->bit_shift = 8;
-						hdlc->shift_reg = hdlc->crc & 0xff;
-					} else if(!hdlc->do_adapt56){
-						hdlc->state = HDLC_SEND_FAST_FLAG;
-					} else {
-						hdlc->state = HDLC_SENDFLAG_B0;
-					}
+						hdlc->shift_reg =
+							hdlc->crc & 0xff;
+					} else if (!hdlc->do_adapt56)
+						hdlc->state =
+							HDLC_SEND_FAST_FLAG;
+					else
+						hdlc->state =
+							HDLC_SENDFLAG_B0;
 				}
 
 			}
 		}
 
-		switch(hdlc->state){
+		switch (hdlc->state) {
 		case STOPPED:
 			while (dsize--)
 				*dst++ = 0xff;
-
 			return dsize;
 		case HDLC_SEND_FAST_FLAG:
 			hdlc->do_closing = 0;
-			if(slen == 0){
-				*dst++ = hdlc->ffvalue;
+			if (slen == 0) {
+				/* the code is for bitreverse streams */
+				if (hdlc->do_bitreverse == 0)
+					*dst++ = bitrev8(hdlc->ffvalue);
+				else
+					*dst++ = hdlc->ffvalue;
 				len++;
 				dsize--;
 				break;
 			}
-			if(hdlc->bit_shift==8){
-				hdlc->cbin = hdlc->ffvalue>>(8-hdlc->data_bits);
+			/* fall through */
+		case HDLC_SENDFLAG_ONE:
+			if (hdlc->bit_shift == 8) {
+				hdlc->cbin = hdlc->ffvalue >>
+					(8 - hdlc->data_bits);
 				hdlc->state = HDLC_SEND_DATA;
 				hdlc->crc = 0xffff;
 				hdlc->hdlc_bits1 = 0;
@@ -413,17 +432,17 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
 			hdlc->cbin++;
-			if(++hdlc->hdlc_bits1 == 6)
+			if (++hdlc->hdlc_bits1 == 6)
 				hdlc->state = HDLC_SENDFLAG_B7;
 			break;
 		case HDLC_SENDFLAG_B7:
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
-			if(slen == 0){
+			if (slen == 0) {
 				hdlc->state = HDLC_SENDFLAG_B0;
 				break;
 			}
-			if(hdlc->bit_shift==8){
+			if (hdlc->bit_shift == 8) {
 				hdlc->state = HDLC_SEND_DATA;
 				hdlc->crc = 0xffff;
 				hdlc->hdlc_bits1 = 0;
@@ -432,7 +451,7 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			break;
 		case HDLC_SEND_FIRST_FLAG:
 			hdlc->data_received = 1;
-			if(hdlc->data_bits==8){
+			if (hdlc->data_bits == 8) {
 				hdlc->state = HDLC_SEND_DATA;
 				hdlc->crc = 0xffff;
 				hdlc->hdlc_bits1 = 0;
@@ -440,11 +459,11 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			}
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
-			if(hdlc->shift_reg & 0x01)
+			if (hdlc->shift_reg & 0x01)
 				hdlc->cbin++;
 			hdlc->shift_reg >>= 1;
 			hdlc->bit_shift--;
-			if(hdlc->bit_shift==0){
+			if (hdlc->bit_shift == 0) {
 				hdlc->state = HDLC_SEND_DATA;
 				hdlc->crc = 0xffff;
 				hdlc->hdlc_bits1 = 0;
@@ -453,14 +472,14 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 		case HDLC_SEND_DATA:
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
-			if(hdlc->hdlc_bits1 == 5){
+			if (hdlc->hdlc_bits1 == 5) {
 				hdlc->hdlc_bits1 = 0;
 				break;
 			}
-			if(hdlc->bit_shift==8){
-				hdlc->crc = crc_ccitt_byte(hdlc->crc, hdlc->shift_reg);
-			}
-			if(hdlc->shift_reg & 0x01){
+			if (hdlc->bit_shift == 8)
+				hdlc->crc = crc_ccitt_byte(hdlc->crc,
+					hdlc->shift_reg);
+			if (hdlc->shift_reg & 0x01) {
 				hdlc->hdlc_bits1++;
 				hdlc->cbin++;
 				hdlc->shift_reg >>= 1;
@@ -474,11 +493,11 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 		case HDLC_SEND_CRC1:
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
-			if(hdlc->hdlc_bits1 == 5){
+			if (hdlc->hdlc_bits1 == 5) {
 				hdlc->hdlc_bits1 = 0;
 				break;
 			}
-			if(hdlc->shift_reg & 0x01){
+			if (hdlc->shift_reg & 0x01) {
 				hdlc->hdlc_bits1++;
 				hdlc->cbin++;
 				hdlc->shift_reg >>= 1;
@@ -488,7 +507,7 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 				hdlc->shift_reg >>= 1;
 				hdlc->bit_shift--;
 			}
-			if(hdlc->bit_shift==0){
+			if (hdlc->bit_shift == 0) {
 				hdlc->shift_reg = (hdlc->crc >> 8);
 				hdlc->state = HDLC_SEND_CRC2;
 				hdlc->bit_shift = 8;
@@ -497,11 +516,11 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 		case HDLC_SEND_CRC2:
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
-			if(hdlc->hdlc_bits1 == 5){
+			if (hdlc->hdlc_bits1 == 5) {
 				hdlc->hdlc_bits1 = 0;
 				break;
 			}
-			if(hdlc->shift_reg & 0x01){
+			if (hdlc->shift_reg & 0x01) {
 				hdlc->hdlc_bits1++;
 				hdlc->cbin++;
 				hdlc->shift_reg >>= 1;
@@ -511,7 +530,7 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 				hdlc->shift_reg >>= 1;
 				hdlc->bit_shift--;
 			}
-			if(hdlc->bit_shift==0){
+			if (hdlc->bit_shift == 0) {
 				hdlc->shift_reg = 0x7e;
 				hdlc->state = HDLC_SEND_CLOSING_FLAG;
 				hdlc->bit_shift = 8;
@@ -520,33 +539,36 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 		case HDLC_SEND_CLOSING_FLAG:
 			hdlc->cbin <<= 1;
 			hdlc->data_bits++;
-			if(hdlc->hdlc_bits1 == 5){
+			if (hdlc->hdlc_bits1 == 5) {
 				hdlc->hdlc_bits1 = 0;
 				break;
 			}
-			if(hdlc->shift_reg & 0x01){
+			if (hdlc->shift_reg & 0x01)
 				hdlc->cbin++;
-			}
 			hdlc->shift_reg >>= 1;
 			hdlc->bit_shift--;
-			if(hdlc->bit_shift==0){
-				hdlc->ffvalue = xfast_flag_value[hdlc->data_bits];
-				if(hdlc->dchannel){
+			if (hdlc->bit_shift == 0) {
+				hdlc->ffvalue =
+					xfast_flag_value[hdlc->data_bits];
+				if (hdlc->dchannel) {
 					hdlc->ffvalue = 0x7e;
 					hdlc->state = HDLC_SEND_IDLE1;
 					hdlc->bit_shift = 8-hdlc->data_bits;
-					if(hdlc->bit_shift==0)
-						hdlc->state = HDLC_SEND_FAST_IDLE;
+					if (hdlc->bit_shift == 0)
+						hdlc->state =
+							HDLC_SEND_FAST_IDLE;
 				} else {
-					if(!hdlc->do_adapt56){
-						hdlc->state = HDLC_SEND_FAST_FLAG;
+					if (!hdlc->do_adapt56) {
+						hdlc->state =
+							HDLC_SEND_FAST_FLAG;
 						hdlc->data_received = 0;
 					} else {
 						hdlc->state = HDLC_SENDFLAG_B0;
 						hdlc->data_received = 0;
 					}
-					// Finished with this frame, send flags
-					if (dsize > 1) dsize = 1;
+					/* Finished this frame, send flags */
+					if (dsize > 1)
+						dsize = 1;
 				}
 			}
 			break;
@@ -556,7 +578,7 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			hdlc->cbin++;
 			hdlc->data_bits++;
 			hdlc->bit_shift--;
-			if(hdlc->bit_shift==0){
+			if (hdlc->bit_shift == 0) {
 				hdlc->state = HDLC_SEND_FAST_IDLE;
 				hdlc->bit_shift = 0;
 			}
@@ -565,12 +587,17 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 			hdlc->do_closing = 0;
 			hdlc->cbin = 0xff;
 			hdlc->data_bits = 8;
-			if(hdlc->bit_shift == 8){
+			if (hdlc->bit_shift == 8) {
 				hdlc->cbin = 0x7e;
 				hdlc->state = HDLC_SEND_FIRST_FLAG;
 			} else {
-				*dst++ = hdlc->cbin;
-				hdlc->bit_shift = hdlc->data_bits = 0;
+				/* the code is for bitreverse streams */
+				if (hdlc->do_bitreverse == 0)
+					*dst++ = bitrev8(hdlc->cbin);
+				else
+					*dst++ = hdlc->cbin;
+				hdlc->bit_shift = 0;
+				hdlc->data_bits = 0;
 				len++;
 				dsize = 0;
 			}
@@ -578,15 +605,19 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 		default:
 			break;
 		}
-		if(hdlc->do_adapt56){
-			if(hdlc->data_bits==7){
+		if (hdlc->do_adapt56) {
+			if (hdlc->data_bits == 7) {
 				hdlc->cbin <<= 1;
 				hdlc->cbin++;
 				hdlc->data_bits++;
 			}
 		}
-		if(hdlc->data_bits==8){
-			*dst++ = hdlc->cbin;
+		if (hdlc->data_bits == 8) {
+			/* the code is for bitreverse streams */
+			if (hdlc->do_bitreverse == 0)
+				*dst++ = bitrev8(hdlc->cbin);
+			else
+				*dst++ = hdlc->cbin;
 			hdlc->data_bits = 0;
 			len++;
 			dsize--;
@@ -596,8 +627,4 @@ int isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const unsigned char *src,
 
 	return len;
 }
-
-EXPORT_SYMBOL(isdnhdlc_rcv_init);
-EXPORT_SYMBOL(isdnhdlc_decode);
-EXPORT_SYMBOL(isdnhdlc_out_init);
 EXPORT_SYMBOL(isdnhdlc_encode);

drivers/isdn/mISDN/hwchannel.c

@@ -114,13 +114,14 @@ mISDN_freedchannel(struct dchannel *ch)
 }
 EXPORT_SYMBOL(mISDN_freedchannel);
 
-int
-mISDN_freebchannel(struct bchannel *ch)
+void
+mISDN_clear_bchannel(struct bchannel *ch)
 {
 	if (ch->tx_skb) {
 		dev_kfree_skb(ch->tx_skb);
 		ch->tx_skb = NULL;
 	}
+	ch->tx_idx = 0;
 	if (ch->rx_skb) {
 		dev_kfree_skb(ch->rx_skb);
 		ch->rx_skb = NULL;
@@ -129,6 +130,16 @@ mISDN_freebchannel(struct bchannel *ch)
 		dev_kfree_skb(ch->next_skb);
 		ch->next_skb = NULL;
 	}
+	test_and_clear_bit(FLG_TX_BUSY, &ch->Flags);
+	test_and_clear_bit(FLG_TX_NEXT, &ch->Flags);
+	test_and_clear_bit(FLG_ACTIVE, &ch->Flags);
+}
+EXPORT_SYMBOL(mISDN_clear_bchannel);
+
+int
+mISDN_freebchannel(struct bchannel *ch)
+{
+	mISDN_clear_bchannel(ch);
 	skb_queue_purge(&ch->rqueue);
 	ch->rcount = 0;
 	flush_scheduled_work();

drivers/isdn/mISDN/layer2.c

@@ -1832,8 +1832,6 @@ static struct FsmNode L2FnList[] =
 	{ST_L2_8, EV_L1_DEACTIVATE, l2_persistant_da},
 };
 
-#define L2_FN_COUNT (sizeof(L2FnList)/sizeof(struct FsmNode))
-
 static int
 ph_data_indication(struct layer2 *l2, struct mISDNhead *hh, struct sk_buff *skb)
 {

include/linux/isdn/hdlc.h

@@ -0,0 +1,82 @@
+/*
+ * hdlc.h  --  General purpose ISDN HDLC decoder.
+ *
+ * Implementation of a HDLC decoder/encoder in software.
+ * Neccessary because some ISDN devices don't have HDLC
+ * controllers.
+ *
+ * Copyright (C)
+ *	2009	Karsten Keil		<keil@b1-systems.de>
+ *	2002	Wolfgang Mües		<wolfgang@iksw-muees.de>
+ *	2001	Frode Isaksen		<fisaksen@bewan.com>
+ *	2001	Kai Germaschewski	<kai.germaschewski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ISDNHDLC_H__
+#define __ISDNHDLC_H__
+
+struct isdnhdlc_vars {
+	int bit_shift;
+	int hdlc_bits1;
+	int data_bits;
+	int ffbit_shift;	/* encoding only */
+	int state;
+	int dstpos;
+
+	u16 crc;
+
+	u8 cbin;
+	u8 shift_reg;
+	u8 ffvalue;
+
+	/* set if transferring data */
+	u32 data_received:1;
+	/* set if D channel (send idle instead of flags) */
+	u32 dchannel:1;
+	/* set if 56K adaptation */
+	u32 do_adapt56:1;
+	/* set if in closing phase (need to send CRC + flag) */
+	u32 do_closing:1;
+	/* set if data is bitreverse */
+	u32 do_bitreverse:1;
+};
+
+/* Feature Flags */
+#define HDLC_56KBIT	0x01
+#define HDLC_DCHANNEL	0x02
+#define HDLC_BITREVERSE	0x04
+
+/*
+  The return value from isdnhdlc_decode is
+  the frame length, 0 if no complete frame was decoded,
+  or a negative error number
+*/
+#define HDLC_FRAMING_ERROR     1
+#define HDLC_CRC_ERROR         2
+#define HDLC_LENGTH_ERROR      3
+
+extern void	isdnhdlc_rcv_init(struct isdnhdlc_vars *hdlc, u32 features);
+
+extern int	isdnhdlc_decode(struct isdnhdlc_vars *hdlc, const u8 *src,
+			int slen, int *count, u8 *dst, int dsize);
+
+extern void	isdnhdlc_out_init(struct isdnhdlc_vars *hdlc, u32 features);
+
+extern int	isdnhdlc_encode(struct isdnhdlc_vars *hdlc, const u8 *src,
+			u16 slen, int *count, u8 *dst, int dsize);
+
+#endif /* __ISDNHDLC_H__ */

include/linux/mISDNhw.h

@@ -168,6 +168,7 @@ struct bchannel {
 extern int	mISDN_initdchannel(struct dchannel *, int, void *);
 extern int	mISDN_initbchannel(struct bchannel *, int);
 extern int	mISDN_freedchannel(struct dchannel *);
+extern void	mISDN_clear_bchannel(struct bchannel *);
 extern int	mISDN_freebchannel(struct bchannel *);
 extern void	queue_ch_frame(struct mISDNchannel *, u_int,
 			int, struct sk_buff *);

include/linux/mISDNif.h

@@ -37,7 +37,7 @@
  */
 #define	MISDN_MAJOR_VERSION	1
 #define	MISDN_MINOR_VERSION	1
-#define MISDN_RELEASE		20
+#define MISDN_RELEASE		21
 
 /* primitives for information exchange
  * generell format
@@ -153,6 +153,18 @@
 #define HFC_VOL_CHANGE_RX	0x2602
 #define HFC_SPL_LOOP_ON		0x2603
 #define HFC_SPL_LOOP_OFF	0x2604
+/* for T30 FAX and analog modem */
+#define HW_MOD_FRM		0x4000
+#define HW_MOD_FRH		0x4001
+#define HW_MOD_FTM		0x4002
+#define HW_MOD_FTH		0x4003
+#define HW_MOD_FTS		0x4004
+#define HW_MOD_CONNECT		0x4010
+#define HW_MOD_OK		0x4011
+#define HW_MOD_NOCARR		0x4012
+#define HW_MOD_FCERROR		0x4013
+#define HW_MOD_READY		0x4014
+#define HW_MOD_LASTDATA		0x4015
 
 /* DSP_TONE_PATT_ON parameter */
 #define TONE_OFF			0x0000
@@ -224,6 +236,8 @@
 #define ISDN_P_B_L2DTMF		0x24
 #define ISDN_P_B_L2DSP		0x25
 #define ISDN_P_B_L2DSPHDLC	0x26
+#define ISDN_P_B_T30_FAX	0x27
+#define ISDN_P_B_MODEM_ASYNC	0x28
 
 #define OPTION_L2_PMX		1
 #define OPTION_L2_PTP		2