diff --git a/drivers/isdn/hardware/avm/c4.c b/drivers/isdn/hardware/avm/c4.c
new file mode 100644
index 0000000..fa6b93b
--- /dev/null
+++ b/drivers/isdn/hardware/avm/c4.c
@@ -0,0 +1,1310 @@
+/* $Id: c4.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
+ * 
+ * Module for AVM C4 & C2 card.
+ * 
+ * Copyright 1999 by Carsten Paeth <calle@calle.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/capi.h>
+#include <linux/kernelcapi.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <linux/netdevice.h>
+#include <linux/isdn/capicmd.h>
+#include <linux/isdn/capiutil.h>
+#include <linux/isdn/capilli.h>
+#include "avmcard.h"
+
+#undef CONFIG_C4_DEBUG
+#undef CONFIG_C4_POLLDEBUG
+
+/* ------------------------------------------------------------- */
+
+static char *revision = "$Revision: 1.1.2.2 $";
+
+/* ------------------------------------------------------------- */
+
+static int suppress_pollack;
+
+static struct pci_device_id c4_pci_tbl[] = {
+	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C4, 0, 0, (unsigned long)4 },
+	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C2, 0, 0, (unsigned long)2 },
+	{ }			/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(pci, c4_pci_tbl);
+MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM C2/C4 cards");
+MODULE_AUTHOR("Carsten Paeth");
+MODULE_LICENSE("GPL");
+MODULE_PARM(suppress_pollack, "0-1i");
+
+/* ------------------------------------------------------------- */
+
+static void c4_dispatch_tx(avmcard *card);
+
+/* ------------------------------------------------------------- */
+
+#define DC21285_DRAM_A0MR	0x40000000
+#define DC21285_DRAM_A1MR	0x40004000
+#define DC21285_DRAM_A2MR	0x40008000
+#define DC21285_DRAM_A3MR	0x4000C000
+
+#define	CAS_OFFSET	0x88
+
+#define DC21285_ARMCSR_BASE	0x42000000
+
+#define	PCI_OUT_INT_STATUS	0x30
+#define	PCI_OUT_INT_MASK	0x34
+#define	MAILBOX_0		0x50
+#define	MAILBOX_1		0x54
+#define	MAILBOX_2		0x58
+#define	MAILBOX_3		0x5C
+#define	DOORBELL		0x60
+#define	DOORBELL_SETUP		0x64
+
+#define CHAN_1_CONTROL		0x90
+#define CHAN_2_CONTROL		0xB0
+#define DRAM_TIMING		0x10C
+#define DRAM_ADDR_SIZE_0	0x110
+#define DRAM_ADDR_SIZE_1	0x114
+#define DRAM_ADDR_SIZE_2	0x118
+#define DRAM_ADDR_SIZE_3	0x11C
+#define	SA_CONTROL		0x13C
+#define	XBUS_CYCLE		0x148
+#define	XBUS_STROBE		0x14C
+#define	DBELL_PCI_MASK		0x150
+#define DBELL_SA_MASK		0x154
+
+#define SDRAM_SIZE		0x1000000
+
+/* ------------------------------------------------------------- */
+
+#define	MBOX_PEEK_POKE		MAILBOX_0
+
+#define DBELL_ADDR		0x01
+#define DBELL_DATA		0x02
+#define DBELL_RNWR		0x40
+#define DBELL_INIT		0x80
+
+/* ------------------------------------------------------------- */
+
+#define	MBOX_UP_ADDR		MAILBOX_0
+#define	MBOX_UP_LEN		MAILBOX_1
+#define	MBOX_DOWN_ADDR		MAILBOX_2
+#define	MBOX_DOWN_LEN		MAILBOX_3
+
+#define	DBELL_UP_HOST		0x00000100
+#define	DBELL_UP_ARM		0x00000200
+#define	DBELL_DOWN_HOST		0x00000400
+#define	DBELL_DOWN_ARM		0x00000800
+#define	DBELL_RESET_HOST	0x40000000
+#define	DBELL_RESET_ARM		0x80000000
+
+/* ------------------------------------------------------------- */
+
+#define	DRAM_TIMING_DEF		0x001A01A5
+#define DRAM_AD_SZ_DEF0		0x00000045
+#define DRAM_AD_SZ_NULL		0x00000000
+
+#define SA_CTL_ALLRIGHT		0x64AA0271
+
+#define	INIT_XBUS_CYCLE		0x100016DB
+#define	INIT_XBUS_STROBE	0xF1F1F1F1
+
+/* ------------------------------------------------------------- */
+
+#define	RESET_TIMEOUT		(15*HZ)	/* 15 sec */
+#define	PEEK_POKE_TIMEOUT	(HZ/10)	/* 0.1 sec */
+
+/* ------------------------------------------------------------- */
+
+#define c4outmeml(addr, value)	writel(value, addr)
+#define c4inmeml(addr)	readl(addr)
+#define c4outmemw(addr, value)	writew(value, addr)
+#define c4inmemw(addr)	readw(addr)
+#define c4outmemb(addr, value)	writeb(value, addr)
+#define c4inmemb(addr)	readb(addr)
+
+/* ------------------------------------------------------------- */
+
+static inline int wait_for_doorbell(avmcard *card, unsigned long t)
+{
+	unsigned long stop;
+
+	stop = jiffies + t;
+	while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
+		if (!time_before(jiffies, stop))
+			return -1;
+		mb();
+	}
+	return 0;
+}
+
+static int c4_poke(avmcard *card,  unsigned long off, unsigned long value)
+{
+
+	if (wait_for_doorbell(card, HZ/10) < 0)
+		return -1;
+	
+	c4outmeml(card->mbase+MBOX_PEEK_POKE, off);
+	c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
+
+	if (wait_for_doorbell(card, HZ/10) < 0)
+		return -1;
+
+	c4outmeml(card->mbase+MBOX_PEEK_POKE, value);
+	c4outmeml(card->mbase+DOORBELL, DBELL_DATA | DBELL_ADDR);
+
+	return 0;
+}
+
+static int c4_peek(avmcard *card,  unsigned long off, unsigned long *valuep)
+{
+	if (wait_for_doorbell(card, HZ/10) < 0)
+		return -1;
+
+	c4outmeml(card->mbase+MBOX_PEEK_POKE, off);
+	c4outmeml(card->mbase+DOORBELL, DBELL_RNWR | DBELL_ADDR);
+
+	if (wait_for_doorbell(card, HZ/10) < 0)
+		return -1;
+
+	*valuep = c4inmeml(card->mbase+MBOX_PEEK_POKE);
+
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static int c4_load_t4file(avmcard *card, capiloaddatapart * t4file)
+{
+	u32 val;
+	unsigned char *dp;
+	u_int left;
+	u32 loadoff = 0;
+
+	dp = t4file->data;
+	left = t4file->len;
+	while (left >= sizeof(u32)) {
+	        if (t4file->user) {
+			if (copy_from_user(&val, dp, sizeof(val)))
+				return -EFAULT;
+		} else {
+			memcpy(&val, dp, sizeof(val));
+		}
+		if (c4_poke(card, loadoff, val)) {
+			printk(KERN_ERR "%s: corrupted firmware file ?\n",
+					card->name);
+			return -EIO;
+		}
+		left -= sizeof(u32);
+		dp += sizeof(u32);
+		loadoff += sizeof(u32);
+	}
+	if (left) {
+		val = 0;
+		if (t4file->user) {
+			if (copy_from_user(&val, dp, left))
+				return -EFAULT;
+		} else {
+			memcpy(&val, dp, left);
+		}
+		if (c4_poke(card, loadoff, val)) {
+			printk(KERN_ERR "%s: corrupted firmware file ?\n",
+					card->name);
+			return -EIO;
+		}
+	}
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static inline void _put_byte(void **pp, u8 val)
+{
+	u8 *s = *pp;
+	*s++ = val;
+	*pp = s;
+}
+
+static inline void _put_word(void **pp, u32 val)
+{
+	u8 *s = *pp;
+	*s++ = val & 0xff;
+	*s++ = (val >> 8) & 0xff;
+	*s++ = (val >> 16) & 0xff;
+	*s++ = (val >> 24) & 0xff;
+	*pp = s;
+}
+
+static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
+{
+	unsigned i = len;
+	_put_word(pp, i);
+	while (i-- > 0)
+		_put_byte(pp, *dp++);
+}
+
+static inline u8 _get_byte(void **pp)
+{
+	u8 *s = *pp;
+	u8 val;
+	val = *s++;
+	*pp = s;
+	return val;
+}
+
+static inline u32 _get_word(void **pp)
+{
+	u8 *s = *pp;
+	u32 val;
+	val = *s++;
+	val |= (*s++ << 8);
+	val |= (*s++ << 16);
+	val |= (*s++ << 24);
+	*pp = s;
+	return val;
+}
+
+static inline u32 _get_slice(void **pp, unsigned char *dp)
+{
+	unsigned int len, i;
+
+	len = i = _get_word(pp);
+	while (i-- > 0) *dp++ = _get_byte(pp);
+	return len;
+}
+
+/* ------------------------------------------------------------- */
+
+static void c4_reset(avmcard *card)
+{
+	unsigned long stop;
+
+	c4outmeml(card->mbase+DOORBELL, DBELL_RESET_ARM);
+
+	stop = jiffies + HZ*10;
+	while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
+		if (!time_before(jiffies, stop))
+			return;
+		c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
+		mb();
+	}
+
+	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
+	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
+}
+
+/* ------------------------------------------------------------- */
+
+static int c4_detect(avmcard *card)
+{
+	unsigned long stop, dummy;
+
+	c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c);
+	if (c4inmeml(card->mbase+PCI_OUT_INT_MASK) != 0x0c)
+		return	1;
+
+	c4outmeml(card->mbase+DOORBELL, DBELL_RESET_ARM);
+
+	stop = jiffies + HZ*10;
+	while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) {
+		if (!time_before(jiffies, stop))
+			return 2;
+		c4outmeml(card->mbase+DOORBELL, DBELL_ADDR);
+		mb();
+	}
+
+	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
+	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
+
+	c4outmeml(card->mbase+MAILBOX_0, 0x55aa55aa);
+	if (c4inmeml(card->mbase+MAILBOX_0) != 0x55aa55aa) return 3;
+
+	c4outmeml(card->mbase+MAILBOX_0, 0xaa55aa55);
+	if (c4inmeml(card->mbase+MAILBOX_0) != 0xaa55aa55) return 4;
+
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DBELL_SA_MASK, 0)) return 5;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DBELL_PCI_MASK, 0)) return 6;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+SA_CONTROL, SA_CTL_ALLRIGHT))
+		return 7;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+XBUS_CYCLE, INIT_XBUS_CYCLE))
+		return 8;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+XBUS_STROBE, INIT_XBUS_STROBE))
+		return 8;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_TIMING, 0)) return 9;
+
+        mdelay(1);
+
+	if (c4_peek(card, DC21285_DRAM_A0MR, &dummy)) return 10;
+	if (c4_peek(card, DC21285_DRAM_A1MR, &dummy)) return 11;
+	if (c4_peek(card, DC21285_DRAM_A2MR, &dummy)) return 12;
+	if (c4_peek(card, DC21285_DRAM_A3MR, &dummy)) return 13;
+
+	if (c4_poke(card, DC21285_DRAM_A0MR+CAS_OFFSET, 0)) return 14;
+	if (c4_poke(card, DC21285_DRAM_A1MR+CAS_OFFSET, 0)) return 15;
+	if (c4_poke(card, DC21285_DRAM_A2MR+CAS_OFFSET, 0)) return 16;
+	if (c4_poke(card, DC21285_DRAM_A3MR+CAS_OFFSET, 0)) return 17;
+
+        mdelay(1);
+
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_TIMING, DRAM_TIMING_DEF))
+		return 18;
+
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_0,DRAM_AD_SZ_DEF0))
+		return 19;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_1,DRAM_AD_SZ_NULL))
+		return 20;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_2,DRAM_AD_SZ_NULL))
+		return 21;
+	if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_3,DRAM_AD_SZ_NULL))
+		return 22;
+
+	/* Transputer test */
+	
+	if (   c4_poke(card, 0x000000, 0x11111111)
+	    || c4_poke(card, 0x400000, 0x22222222)
+	    || c4_poke(card, 0x800000, 0x33333333)
+	    || c4_poke(card, 0xC00000, 0x44444444))
+		return 23;
+
+	if (   c4_peek(card, 0x000000, &dummy) || dummy != 0x11111111
+	    || c4_peek(card, 0x400000, &dummy) || dummy != 0x22222222
+	    || c4_peek(card, 0x800000, &dummy) || dummy != 0x33333333
+	    || c4_peek(card, 0xC00000, &dummy) || dummy != 0x44444444)
+		return 24;
+
+	if (   c4_poke(card, 0x000000, 0x55555555)
+	    || c4_poke(card, 0x400000, 0x66666666)
+	    || c4_poke(card, 0x800000, 0x77777777)
+	    || c4_poke(card, 0xC00000, 0x88888888))
+		return 25;
+
+	if (   c4_peek(card, 0x000000, &dummy) || dummy != 0x55555555
+	    || c4_peek(card, 0x400000, &dummy) || dummy != 0x66666666
+	    || c4_peek(card, 0x800000, &dummy) || dummy != 0x77777777
+	    || c4_peek(card, 0xC00000, &dummy) || dummy != 0x88888888)
+		return 26;
+
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static void c4_dispatch_tx(avmcard *card)
+{
+	avmcard_dmainfo *dma = card->dma;
+	struct sk_buff *skb;
+	u8 cmd, subcmd;
+	u16 len;
+	u32 txlen;
+	void *p;
+
+
+	if (card->csr & DBELL_DOWN_ARM) { /* tx busy */
+		return;
+	}
+
+	skb = skb_dequeue(&dma->send_queue);
+	if (!skb) {
+#ifdef CONFIG_C4_DEBUG
+		printk(KERN_DEBUG "%s: tx underrun\n", card->name);
+#endif
+		return;
+	}
+
+	len = CAPIMSG_LEN(skb->data);
+
+	if (len) {
+		cmd = CAPIMSG_COMMAND(skb->data);
+		subcmd = CAPIMSG_SUBCOMMAND(skb->data);
+
+		p = dma->sendbuf.dmabuf;
+
+		if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
+			u16 dlen = CAPIMSG_DATALEN(skb->data);
+			_put_byte(&p, SEND_DATA_B3_REQ);
+			_put_slice(&p, skb->data, len);
+			_put_slice(&p, skb->data + len, dlen);
+		} else {
+			_put_byte(&p, SEND_MESSAGE);
+			_put_slice(&p, skb->data, len);
+		}
+		txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf;
+#ifdef CONFIG_C4_DEBUG
+		printk(KERN_DEBUG "%s: tx put msg len=%d\n", card->name, txlen);
+#endif
+	} else {
+		txlen = skb->len-2;
+#ifdef CONFIG_C4_POLLDEBUG
+		if (skb->data[2] == SEND_POLLACK)
+			printk(KERN_INFO "%s: ack to c4\n", card->name);
+#endif
+#ifdef CONFIG_C4_DEBUG
+		printk(KERN_DEBUG "%s: tx put 0x%x len=%d\n",
+				card->name, skb->data[2], txlen);
+#endif
+		memcpy(dma->sendbuf.dmabuf, skb->data+2, skb->len-2);
+	}
+	txlen = (txlen + 3) & ~3;
+
+	c4outmeml(card->mbase+MBOX_DOWN_ADDR, dma->sendbuf.dmaaddr);
+	c4outmeml(card->mbase+MBOX_DOWN_LEN, txlen);
+
+	card->csr |= DBELL_DOWN_ARM;
+
+	c4outmeml(card->mbase+DOORBELL, DBELL_DOWN_ARM);
+
+	dev_kfree_skb_any(skb);
+}
+
+/* ------------------------------------------------------------- */
+
+static void queue_pollack(avmcard *card)
+{
+	struct sk_buff *skb;
+	void *p;
+
+	skb = alloc_skb(3, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, lost poll ack\n",
+					card->name);
+		return;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_POLLACK);
+	skb_put(skb, (u8 *)p - (u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	c4_dispatch_tx(card);
+}
+
+/* ------------------------------------------------------------- */
+
+static void c4_handle_rx(avmcard *card)
+{
+	avmcard_dmainfo *dma = card->dma;
+	struct capi_ctr *ctrl;
+	avmctrl_info *cinfo;
+	struct sk_buff *skb;
+	void *p = dma->recvbuf.dmabuf;
+	u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
+	u8 b1cmd =  _get_byte(&p);
+	u32 cidx;
+
+
+#ifdef CONFIG_C4_DEBUG
+	printk(KERN_DEBUG "%s: rx 0x%x len=%lu\n", card->name,
+				b1cmd, (unsigned long)dma->recvlen);
+#endif
+	
+	switch (b1cmd) {
+	case RECEIVE_DATA_B3_IND:
+
+		ApplId = (unsigned) _get_word(&p);
+		MsgLen = _get_slice(&p, card->msgbuf);
+		DataB3Len = _get_slice(&p, card->databuf);
+		cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
+		if (cidx >= card->nlogcontr) cidx = 0;
+		ctrl = &card->ctrlinfo[cidx].capi_ctrl;
+
+		if (MsgLen < 30) { /* not CAPI 64Bit */
+			memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
+			MsgLen = 30;
+			CAPIMSG_SETLEN(card->msgbuf, 30);
+		}
+		if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
+			printk(KERN_ERR "%s: incoming packet dropped\n",
+					card->name);
+		} else {
+			memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
+			memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
+			capi_ctr_handle_message(ctrl, ApplId, skb);
+		}
+		break;
+
+	case RECEIVE_MESSAGE:
+
+		ApplId = (unsigned) _get_word(&p);
+		MsgLen = _get_slice(&p, card->msgbuf);
+		cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
+		if (cidx >= card->nlogcontr) cidx = 0;
+		cinfo = &card->ctrlinfo[cidx];
+		ctrl = &card->ctrlinfo[cidx].capi_ctrl;
+
+		if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
+			printk(KERN_ERR "%s: incoming packet dropped\n",
+					card->name);
+		} else {
+			memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
+			if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF)
+				capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
+						     CAPIMSG_NCCI(skb->data),
+						     CAPIMSG_MSGID(skb->data));
+
+			capi_ctr_handle_message(ctrl, ApplId, skb);
+		}
+		break;
+
+	case RECEIVE_NEW_NCCI:
+
+		ApplId = _get_word(&p);
+		NCCI = _get_word(&p);
+		WindowSize = _get_word(&p);
+		cidx = (NCCI&0x7f) - card->cardnr;
+		if (cidx >= card->nlogcontr) cidx = 0;
+
+		capilib_new_ncci(&card->ctrlinfo[cidx].ncci_head, ApplId, NCCI, WindowSize);
+
+		break;
+
+	case RECEIVE_FREE_NCCI:
+
+		ApplId = _get_word(&p);
+		NCCI = _get_word(&p);
+
+		if (NCCI != 0xffffffff) {
+			cidx = (NCCI&0x7f) - card->cardnr;
+			if (cidx >= card->nlogcontr) cidx = 0;
+			capilib_free_ncci(&card->ctrlinfo[cidx].ncci_head, ApplId, NCCI);
+		}
+		break;
+
+	case RECEIVE_START:
+#ifdef CONFIG_C4_POLLDEBUG
+		printk(KERN_INFO "%s: poll from c4\n", card->name);
+#endif
+		if (!suppress_pollack)
+			queue_pollack(card);
+		for (cidx=0; cidx < card->nr_controllers; cidx++) {
+			ctrl = &card->ctrlinfo[cidx].capi_ctrl;
+			capi_ctr_resume_output(ctrl);
+		}
+		break;
+
+	case RECEIVE_STOP:
+		for (cidx=0; cidx < card->nr_controllers; cidx++) {
+			ctrl = &card->ctrlinfo[cidx].capi_ctrl;
+			capi_ctr_suspend_output(ctrl);
+		}
+		break;
+
+	case RECEIVE_INIT:
+
+	        cidx = card->nlogcontr;
+		if (cidx >= card->nr_controllers) {
+			printk(KERN_ERR "%s: card with %d controllers ??\n",
+					card->name, cidx+1);
+			break;
+		}
+	        card->nlogcontr++;
+	        cinfo = &card->ctrlinfo[cidx];
+		ctrl = &cinfo->capi_ctrl;
+		cinfo->versionlen = _get_slice(&p, cinfo->versionbuf);
+		b1_parse_version(cinfo);
+		printk(KERN_INFO "%s: %s-card (%s) now active\n",
+		       card->name,
+		       cinfo->version[VER_CARDTYPE],
+		       cinfo->version[VER_DRIVER]);
+		capi_ctr_ready(&cinfo->capi_ctrl);
+		break;
+
+	case RECEIVE_TASK_READY:
+		ApplId = (unsigned) _get_word(&p);
+		MsgLen = _get_slice(&p, card->msgbuf);
+		card->msgbuf[MsgLen] = 0;
+		while (    MsgLen > 0
+		       && (   card->msgbuf[MsgLen-1] == '\n'
+			   || card->msgbuf[MsgLen-1] == '\r')) {
+			card->msgbuf[MsgLen-1] = 0;
+			MsgLen--;
+		}
+		printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
+				card->name, ApplId, card->msgbuf);
+		break;
+
+	case RECEIVE_DEBUGMSG:
+		MsgLen = _get_slice(&p, card->msgbuf);
+		card->msgbuf[MsgLen] = 0;
+		while (    MsgLen > 0
+		       && (   card->msgbuf[MsgLen-1] == '\n'
+			   || card->msgbuf[MsgLen-1] == '\r')) {
+			card->msgbuf[MsgLen-1] = 0;
+			MsgLen--;
+		}
+		printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
+		break;
+
+	default:
+		printk(KERN_ERR "%s: c4_interrupt: 0x%x ???\n",
+				card->name, b1cmd);
+		return;
+	}
+}
+
+/* ------------------------------------------------------------- */
+
+static irqreturn_t c4_handle_interrupt(avmcard *card)
+{
+	unsigned long flags;
+	u32 status;
+
+	spin_lock_irqsave(&card->lock, flags);
+	status = c4inmeml(card->mbase+DOORBELL);
+
+	if (status & DBELL_RESET_HOST) {
+		u_int i;
+		c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c);
+		spin_unlock_irqrestore(&card->lock, flags);
+		if (card->nlogcontr == 0)
+			return IRQ_HANDLED;
+		printk(KERN_ERR "%s: unexpected reset\n", card->name);
+                for (i=0; i < card->nr_controllers; i++) {
+			avmctrl_info *cinfo = &card->ctrlinfo[i];
+			memset(cinfo->version, 0, sizeof(cinfo->version));
+			capilib_release(&cinfo->ncci_head);
+			capi_ctr_reseted(&cinfo->capi_ctrl);
+		}
+		card->nlogcontr = 0;
+		return IRQ_HANDLED;
+	}
+
+	status &= (DBELL_UP_HOST | DBELL_DOWN_HOST);
+	if (!status) {
+		spin_unlock_irqrestore(&card->lock, flags);
+		return IRQ_HANDLED;
+	}
+	c4outmeml(card->mbase+DOORBELL, status);
+
+	if ((status & DBELL_UP_HOST) != 0) {
+		card->dma->recvlen = c4inmeml(card->mbase+MBOX_UP_LEN);
+		c4outmeml(card->mbase+MBOX_UP_LEN, 0);
+		c4_handle_rx(card);
+		card->dma->recvlen = 0;
+		c4outmeml(card->mbase+MBOX_UP_LEN, card->dma->recvbuf.size);
+		c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM);
+	}
+
+	if ((status & DBELL_DOWN_HOST) != 0) {
+		card->csr &= ~DBELL_DOWN_ARM;
+	        c4_dispatch_tx(card);
+	} else if (card->csr & DBELL_DOWN_HOST) {
+		if (c4inmeml(card->mbase+MBOX_DOWN_LEN) == 0) {
+		        card->csr &= ~DBELL_DOWN_ARM;
+			c4_dispatch_tx(card);
+		}
+	}
+	spin_unlock_irqrestore(&card->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t c4_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
+{
+	avmcard *card = devptr;
+
+	return c4_handle_interrupt(card);
+}
+
+/* ------------------------------------------------------------- */
+
+static void c4_send_init(avmcard *card)
+{
+	struct sk_buff *skb;
+	void *p;
+
+	skb = alloc_skb(15, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, lost register appl.\n",
+					card->name);
+		return;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_INIT);
+	_put_word(&p, CAPI_MAXAPPL);
+	_put_word(&p, AVM_NCCI_PER_CHANNEL*30);
+	_put_word(&p, card->cardnr - 1);
+	skb_put(skb, (u8 *)p - (u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	c4_dispatch_tx(card);
+}
+
+static int queue_sendconfigword(avmcard *card, u32 val)
+{
+	struct sk_buff *skb;
+	void *p;
+
+	skb = alloc_skb(3+4, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, send config\n",
+					card->name);
+		return -ENOMEM;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_CONFIG);
+	_put_word(&p, val);
+	skb_put(skb, (u8 *)p - (u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	c4_dispatch_tx(card);
+	return 0;
+}
+
+static int queue_sendconfig(avmcard *card, char cval[4])
+{
+	struct sk_buff *skb;
+	unsigned long flags;
+	void *p;
+
+	skb = alloc_skb(3+4, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, send config\n",
+					card->name);
+		return -ENOMEM;
+	}
+	p = skb->data;
+	_put_byte(&p, 0);
+	_put_byte(&p, 0);
+	_put_byte(&p, SEND_CONFIG);
+	_put_byte(&p, cval[0]);
+	_put_byte(&p, cval[1]);
+	_put_byte(&p, cval[2]);
+	_put_byte(&p, cval[3]);
+	skb_put(skb, (u8 *)p - (u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	
+	spin_lock_irqsave(&card->lock, flags);
+	c4_dispatch_tx(card);
+	spin_unlock_irqrestore(&card->lock, flags);
+	return 0;
+}
+
+static int c4_send_config(avmcard *card, capiloaddatapart * config)
+{
+	u8 val[4];
+	unsigned char *dp;
+	u_int left;
+	int retval;
+	
+	if ((retval = queue_sendconfigword(card, 1)) != 0)
+		return retval;
+	if ((retval = queue_sendconfigword(card, config->len)) != 0)
+		return retval;
+
+	dp = config->data;
+	left = config->len;
+	while (left >= sizeof(u32)) {
+	        if (config->user) {
+			if (copy_from_user(val, dp, sizeof(val)))
+				return -EFAULT;
+		} else {
+			memcpy(val, dp, sizeof(val));
+		}
+		if ((retval = queue_sendconfig(card, val)) != 0)
+			return retval;
+		left -= sizeof(val);
+		dp += sizeof(val);
+	}
+	if (left) {
+		memset(val, 0, sizeof(val));
+		if (config->user) {
+			if (copy_from_user(&val, dp, left))
+				return -EFAULT;
+		} else {
+			memcpy(&val, dp, left);
+		}
+		if ((retval = queue_sendconfig(card, val)) != 0)
+			return retval;
+	}
+
+	return 0;
+}
+
+static int c4_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	int retval;
+
+	if ((retval = c4_load_t4file(card, &data->firmware))) {
+		printk(KERN_ERR "%s: failed to load t4file!!\n",
+					card->name);
+		c4_reset(card);
+		return retval;
+	}
+
+	card->csr = 0;
+	c4outmeml(card->mbase+MBOX_UP_LEN, 0);
+	c4outmeml(card->mbase+MBOX_DOWN_LEN, 0);
+	c4outmeml(card->mbase+DOORBELL, DBELL_INIT);
+	mdelay(1);
+	c4outmeml(card->mbase+DOORBELL,
+			DBELL_UP_HOST | DBELL_DOWN_HOST | DBELL_RESET_HOST);
+
+	c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x08);
+
+	card->dma->recvlen = 0;
+	c4outmeml(card->mbase+MBOX_UP_ADDR, card->dma->recvbuf.dmaaddr);
+	c4outmeml(card->mbase+MBOX_UP_LEN, card->dma->recvbuf.size);
+	c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM);
+
+	if (data->configuration.len > 0 && data->configuration.data) {
+		retval = c4_send_config(card, &data->configuration);
+		if (retval) {
+			printk(KERN_ERR "%s: failed to set config!!\n",
+					card->name);
+			c4_reset(card);
+			return retval;
+		}
+	}
+
+        c4_send_init(card);
+
+	return 0;
+}
+
+
+void c4_reset_ctr(struct capi_ctr *ctrl)
+{
+	avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
+	avmctrl_info *cinfo;
+	u_int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&card->lock, flags);
+
+ 	c4_reset(card);
+
+	spin_unlock_irqrestore(&card->lock, flags);
+
+        for (i=0; i < card->nr_controllers; i++) {
+		cinfo = &card->ctrlinfo[i];
+		memset(cinfo->version, 0, sizeof(cinfo->version));
+		capi_ctr_reseted(&cinfo->capi_ctrl);
+	}
+	card->nlogcontr = 0;
+}
+
+static void c4_remove(struct pci_dev *pdev)
+{
+	avmcard *card = pci_get_drvdata(pdev);
+	avmctrl_info *cinfo;
+	u_int i;
+
+	if (!card)
+		return;
+
+ 	c4_reset(card);
+
+        for (i=0; i < card->nr_controllers; i++) {
+		cinfo = &card->ctrlinfo[i];
+		detach_capi_ctr(&cinfo->capi_ctrl);
+	}
+
+	free_irq(card->irq, card);
+	iounmap(card->mbase);
+	release_region(card->port, AVMB1_PORTLEN);
+        avmcard_dma_free(card->dma);
+        pci_set_drvdata(pdev, NULL);
+	b1_free_card(card);
+}
+
+/* ------------------------------------------------------------- */
+
+
+void c4_register_appl(struct capi_ctr *ctrl,
+				u16 appl,
+				capi_register_params *rp)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	struct sk_buff *skb;
+	int want = rp->level3cnt;
+	unsigned long flags;
+	int nconn;
+	void *p;
+
+	if (ctrl->cnr == card->cardnr) {
+
+		if (want > 0) nconn = want;
+		else nconn = ctrl->profile.nbchannel * 4 * -want;
+		if (nconn == 0) nconn = ctrl->profile.nbchannel * 4;
+
+		skb = alloc_skb(23, GFP_ATOMIC);
+		if (!skb) {
+			printk(KERN_CRIT "%s: no memory, lost register appl.\n",
+						card->name);
+			return;
+		}
+		p = skb->data;
+		_put_byte(&p, 0);
+		_put_byte(&p, 0);
+		_put_byte(&p, SEND_REGISTER);
+		_put_word(&p, appl);
+		_put_word(&p, 1024 * (nconn+1));
+		_put_word(&p, nconn);
+		_put_word(&p, rp->datablkcnt);
+		_put_word(&p, rp->datablklen);
+		skb_put(skb, (u8 *)p - (u8 *)skb->data);
+
+		skb_queue_tail(&card->dma->send_queue, skb);
+	
+		spin_lock_irqsave(&card->lock, flags);
+		c4_dispatch_tx(card);
+		spin_unlock_irqrestore(&card->lock, flags);
+	}
+}
+
+/* ------------------------------------------------------------- */
+
+void c4_release_appl(struct capi_ctr *ctrl, u16 appl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	unsigned long flags;
+	struct sk_buff *skb;
+	void *p;
+
+	capilib_release_appl(&cinfo->ncci_head, appl);
+
+	if (ctrl->cnr == card->cardnr) {
+		skb = alloc_skb(7, GFP_ATOMIC);
+		if (!skb) {
+			printk(KERN_CRIT "%s: no memory, lost release appl.\n",
+						card->name);
+			return;
+		}
+		p = skb->data;
+		_put_byte(&p, 0);
+		_put_byte(&p, 0);
+		_put_byte(&p, SEND_RELEASE);
+		_put_word(&p, appl);
+
+		skb_put(skb, (u8 *)p - (u8 *)skb->data);
+		skb_queue_tail(&card->dma->send_queue, skb);
+		spin_lock_irqsave(&card->lock, flags);
+		c4_dispatch_tx(card);
+		spin_unlock_irqrestore(&card->lock, flags);
+	}
+}
+
+/* ------------------------------------------------------------- */
+
+
+static u16 c4_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	u16 retval = CAPI_NOERROR;
+	unsigned long flags;
+
+ 	if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
+		retval = capilib_data_b3_req(&cinfo->ncci_head,
+					     CAPIMSG_APPID(skb->data),
+					     CAPIMSG_NCCI(skb->data),
+					     CAPIMSG_MSGID(skb->data));
+	}
+	if (retval == CAPI_NOERROR) {
+		skb_queue_tail(&card->dma->send_queue, skb);
+		spin_lock_irqsave(&card->lock, flags);
+		c4_dispatch_tx(card);
+		spin_unlock_irqrestore(&card->lock, flags);
+	}
+	return retval;
+}
+
+/* ------------------------------------------------------------- */
+
+static char *c4_procinfo(struct capi_ctr *ctrl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+
+	if (!cinfo)
+		return "";
+	sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
+		cinfo->cardname[0] ? cinfo->cardname : "-",
+		cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
+		cinfo->card ? cinfo->card->port : 0x0,
+		cinfo->card ? cinfo->card->irq : 0,
+		cinfo->card ? cinfo->card->membase : 0
+		);
+	return cinfo->infobuf;
+}
+
+static int c4_read_proc(char *page, char **start, off_t off,
+        		int count, int *eof, struct capi_ctr *ctrl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	u8 flag;
+	int len = 0;
+	char *s;
+
+	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
+	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
+	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	switch (card->cardtype) {
+	case avm_b1isa: s = "B1 ISA"; break;
+	case avm_b1pci: s = "B1 PCI"; break;
+	case avm_b1pcmcia: s = "B1 PCMCIA"; break;
+	case avm_m1: s = "M1"; break;
+	case avm_m2: s = "M2"; break;
+	case avm_t1isa: s = "T1 ISA (HEMA)"; break;
+	case avm_t1pci: s = "T1 PCI"; break;
+	case avm_c4: s = "C4"; break;
+	case avm_c2: s = "C2"; break;
+	default: s = "???"; break;
+	}
+	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	if ((s = cinfo->version[VER_DRIVER]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+	if ((s = cinfo->version[VER_CARDTYPE]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+	if ((s = cinfo->version[VER_SERIAL]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+
+	if (card->cardtype != avm_m1) {
+        	flag = ((u8 *)(ctrl->profile.manu))[3];
+        	if (flag)
+			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			"protocol",
+			(flag & 0x01) ? " DSS1" : "",
+			(flag & 0x02) ? " CT1" : "",
+			(flag & 0x04) ? " VN3" : "",
+			(flag & 0x08) ? " NI1" : "",
+			(flag & 0x10) ? " AUSTEL" : "",
+			(flag & 0x20) ? " ESS" : "",
+			(flag & 0x40) ? " 1TR6" : ""
+			);
+	}
+	if (card->cardtype != avm_m1) {
+        	flag = ((u8 *)(ctrl->profile.manu))[5];
+		if (flag)
+			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			"linetype",
+			(flag & 0x01) ? " point to point" : "",
+			(flag & 0x02) ? " point to multipoint" : "",
+			(flag & 0x08) ? " leased line without D-channel" : "",
+			(flag & 0x04) ? " leased line with D-channel" : ""
+			);
+	}
+	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+
+	if (off+count >= len)
+	   *eof = 1;
+	if (len < off)
+           return 0;
+	*start = page + off;
+	return ((count < len-off) ? count : len-off);
+}
+
+/* ------------------------------------------------------------- */
+
+static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
+		       int nr_controllers)
+{
+	avmcard *card;
+	avmctrl_info *cinfo;
+	int retval;
+	int i;
+
+	card = b1_alloc_card(nr_controllers);
+	if (!card) {
+		printk(KERN_WARNING "c4: no memory.\n");
+		retval = -ENOMEM;
+		goto err;
+	}
+        card->dma = avmcard_dma_alloc("c4", dev, 2048+128, 2048+128);
+	if (!card->dma) {
+		printk(KERN_WARNING "c4: no memory.\n");
+		retval = -ENOMEM;
+		goto err_free;
+	}
+
+	sprintf(card->name, "c%d-%x", nr_controllers, p->port);
+	card->port = p->port;
+	card->irq = p->irq;
+	card->membase = p->membase;
+	card->cardtype = (nr_controllers == 4) ? avm_c4 : avm_c2;
+
+	if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
+		printk(KERN_WARNING "c4: ports 0x%03x-0x%03x in use.\n",
+		       card->port, card->port + AVMB1_PORTLEN);
+		retval = -EBUSY;
+		goto err_free_dma;
+	}
+
+	card->mbase = ioremap(card->membase, 128);
+	if (card->mbase == 0) {
+		printk(KERN_NOTICE "c4: can't remap memory at 0x%lx\n",
+		       card->membase);
+		retval = -EIO;
+		goto err_release_region;
+	}
+
+	retval = c4_detect(card);
+	if (retval != 0) {
+		printk(KERN_NOTICE "c4: NO card at 0x%x error(%d)\n",
+		       card->port, retval);
+		retval = -EIO;
+		goto err_unmap;
+	}
+	c4_reset(card);
+
+	retval = request_irq(card->irq, c4_interrupt, SA_SHIRQ, card->name, card);
+	if (retval) {
+		printk(KERN_ERR "c4: unable to get IRQ %d.\n",card->irq);
+		retval = -EBUSY;
+		goto err_unmap;
+	}
+
+	for (i=0; i < nr_controllers ; i++) {
+		cinfo = &card->ctrlinfo[i];
+		cinfo->capi_ctrl.owner = THIS_MODULE;
+		cinfo->capi_ctrl.driver_name   = "c4";
+		cinfo->capi_ctrl.driverdata    = cinfo;
+		cinfo->capi_ctrl.register_appl = c4_register_appl;
+		cinfo->capi_ctrl.release_appl  = c4_release_appl;
+		cinfo->capi_ctrl.send_message  = c4_send_message;
+		cinfo->capi_ctrl.load_firmware = c4_load_firmware;
+		cinfo->capi_ctrl.reset_ctr     = c4_reset_ctr;
+		cinfo->capi_ctrl.procinfo      = c4_procinfo;
+		cinfo->capi_ctrl.ctr_read_proc = c4_read_proc;
+		strcpy(cinfo->capi_ctrl.name, card->name);
+
+		retval = attach_capi_ctr(&cinfo->capi_ctrl);
+		if (retval) {
+			printk(KERN_ERR "c4: attach controller failed (%d).\n", i);
+			for (i--; i >= 0; i--) {
+				cinfo = &card->ctrlinfo[i];
+				detach_capi_ctr(&cinfo->capi_ctrl);
+			}
+			goto err_free_irq;
+		}
+		if (i == 0)
+			card->cardnr = cinfo->capi_ctrl.cnr;
+	}
+
+	printk(KERN_INFO "c4: AVM C%d at i/o %#x, irq %d, mem %#lx\n",
+	       nr_controllers, card->port, card->irq,
+	       card->membase);
+	pci_set_drvdata(dev, card);
+	return 0;
+
+ err_free_irq:
+	free_irq(card->irq, card);
+ err_unmap:
+	iounmap(card->mbase);
+ err_release_region:
+	release_region(card->port, AVMB1_PORTLEN);
+ err_free_dma:
+	avmcard_dma_free(card->dma);
+ err_free:
+	b1_free_card(card);
+ err:
+	return retval;
+}
+
+/* ------------------------------------------------------------- */
+
+static int __devinit c4_probe(struct pci_dev *dev,
+			      const struct pci_device_id *ent)
+{
+	int nr = ent->driver_data;
+	int retval = 0;
+	struct capicardparams param;
+
+	if (pci_enable_device(dev) < 0) {
+		printk(KERN_ERR "c4: failed to enable AVM-C%d\n", nr);
+		return -ENODEV;
+	}
+	pci_set_master(dev);
+
+	param.port = pci_resource_start(dev, 1);
+	param.irq = dev->irq;
+	param.membase = pci_resource_start(dev, 0);
+	
+	printk(KERN_INFO "c4: PCI BIOS reports AVM-C%d at i/o %#x, irq %d, mem %#x\n",
+	       nr, param.port, param.irq, param.membase);
+	
+	retval = c4_add_card(&param, dev, nr);
+	if (retval != 0) {
+		printk(KERN_ERR "c4: no AVM-C%d at i/o %#x, irq %d detected, mem %#x\n",
+		       nr, param.port, param.irq, param.membase);
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static struct pci_driver c4_pci_driver = {
+       .name           = "c4",
+       .id_table       = c4_pci_tbl,
+       .probe          = c4_probe,
+       .remove         = c4_remove,
+};
+
+static struct capi_driver capi_driver_c2 = {
+	.name		= "c2",
+	.revision	= "1.0",
+};
+
+static struct capi_driver capi_driver_c4 = {
+	.name		= "c4",
+	.revision	= "1.0",
+};
+
+static int __init c4_init(void)
+{
+	char *p;
+	char rev[32];
+	int err;
+
+	if ((p = strchr(revision, ':')) != 0 && p[1]) {
+		strlcpy(rev, p + 2, 32);
+		if ((p = strchr(rev, '$')) != 0 && p > rev)
+		   *(p-1) = 0;
+	} else
+		strcpy(rev, "1.0");
+
+	err = pci_register_driver(&c4_pci_driver);
+	if (!err) {
+		strlcpy(capi_driver_c2.revision, rev, 32);
+		register_capi_driver(&capi_driver_c2);
+		strlcpy(capi_driver_c4.revision, rev, 32);
+		register_capi_driver(&capi_driver_c4);
+		printk(KERN_INFO "c4: revision %s\n", rev);
+	}
+	return err;
+}
+
+static void __exit c4_exit(void)
+{
+	unregister_capi_driver(&capi_driver_c2);
+	unregister_capi_driver(&capi_driver_c4);
+	pci_unregister_driver(&c4_pci_driver);
+}
+
+module_init(c4_init);
+module_exit(c4_exit);