Merge with 2.3.47. Guys, this is buggy as shit. You've been warned.

1 files changed, 1326 insertions, 0 deletions

diff --git a/drivers/isdn/avmb1/c4.c b/drivers/isdn/avmb1/c4.c
new file mode 100644
index 000000000..7483370cf
--- /dev/null
+++ b/drivers/isdn/avmb1/c4.c
@@ -0,0 +1,1326 @@
+/*
+ * $Id: c4.c,v 1.4 2000/02/02 18:36:03 calle Exp $
+ * 
+ * Module for AVM C4 card.
+ * 
+ * (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
+ * 
+ * $Log: c4.c,v $
+ * Revision 1.4  2000/02/02 18:36:03  calle
+ * - Modules are now locked while init_module is running
+ * - fixed problem with memory mapping if address is not aligned
+ *
+ * Revision 1.3  2000/01/25 14:37:39  calle
+ * new message after successfull detection including card revision and
+ * used resources.
+ *
+ * Revision 1.2  2000/01/21 20:52:58  keil
+ * pci_find_subsys as local function for 2.2.X kernel
+ *
+ * Revision 1.1  2000/01/20 10:51:37  calle
+ * Added driver for C4.
+ *
+ *
+ */
+
+#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 <asm/io.h>
+#include <asm/uaccess.h>
+#include "capicmd.h"
+#include "capiutil.h"
+#include "capilli.h"
+#include "avmcard.h"
+
+static char *revision = "$Revision: 1.4 $";
+
+#undef CONFIG_C4_DEBUG
+#undef CONFIG_C4_POLLDEBUG
+
+/* ------------------------------------------------------------- */
+
+#ifndef PCI_VENDOR_ID_DEC
+#define PCI_VENDOR_ID_DEC	0x1011
+#endif
+
+#ifndef PCI_DEVICE_ID_DEC_21285
+#define PCI_DEVICE_ID_DEC_21285	0x1065
+#endif
+
+#ifndef PCI_VENDOR_ID_AVM
+#define PCI_VENDOR_ID_AVM	0x1244
+#endif
+
+#ifndef PCI_DEVICE_ID_AVM_C4
+#define PCI_DEVICE_ID_AVM_C4	0x0800
+#endif
+
+/* ------------------------------------------------------------- */
+
+int suppress_pollack = 0;
+
+MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
+
+MODULE_PARM(suppress_pollack, "0-1i");
+
+/* ------------------------------------------------------------- */
+
+static struct capi_driver_interface *di;
+
+/* ------------------------------------------------------------- */
+
+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;
+	}
+	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;
+	int left, retval;
+	__u32 loadoff = 0;
+
+	dp = t4file->data;
+	left = t4file->len;
+	while (left >= sizeof(__u32)) {
+	        if (t4file->user) {
+			retval = copy_from_user(&val, dp, sizeof(val));
+			if (retval)
+				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) {
+			retval = copy_from_user(&val, dp, left);
+			if (retval)
+				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);
+	}
+
+	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);
+	}
+
+	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;
+
+        udelay(1000);
+
+	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;
+
+        udelay(1000);
+
+	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;
+	unsigned long flags;
+	struct sk_buff *skb;
+	__u8 cmd, subcmd;
+	__u16 len;
+	__u32 txlen;
+	void *p;
+	
+	save_flags(flags);
+	cli();
+
+	if (card->csr & DBELL_DOWN_ARM) { /* tx busy */
+	        restore_flags(flags);
+		return;
+	}
+
+	skb = skb_dequeue(&dma->send_queue);
+	if (!skb) {
+#ifdef CONFIG_C4_DEBUG
+		printk(KERN_DEBUG "%s: tx underrun\n", card->name);
+#endif
+	        restore_flags(flags);
+		return;
+	}
+
+	len = CAPIMSG_LEN(skb->data);
+
+	if (len) {
+		cmd = CAPIMSG_COMMAND(skb->data);
+		subcmd = CAPIMSG_SUBCOMMAND(skb->data);
+
+		p = dma->sendbuf;
+
+		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;
+#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, skb->data+2, skb->len-2);
+	}
+	txlen = (txlen + 3) & ~3;
+
+	c4outmeml(card->mbase+MBOX_DOWN_ADDR, virt_to_phys(dma->sendbuf));
+	c4outmeml(card->mbase+MBOX_DOWN_LEN, txlen);
+
+	card->csr |= DBELL_DOWN_ARM;
+
+	c4outmeml(card->mbase+DOORBELL, DBELL_DOWN_ARM);
+
+	restore_flags(flags);
+	dev_kfree_skb(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;
+	__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 > 3) 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);
+			ctrl->handle_capimsg(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 > 3) cidx = 0;
+		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);
+			ctrl->handle_capimsg(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 > 3) cidx = 0;
+		ctrl = card->ctrlinfo[cidx].capi_ctrl;
+
+		ctrl->new_ncci(ctrl, 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 > 3) cidx = 0;
+			ctrl = card->ctrlinfo[cidx].capi_ctrl;
+			ctrl->free_ncci(ctrl, ApplId, NCCI);
+		} else {
+			for (cidx=0; cidx < 4; cidx++) {
+				ctrl = card->ctrlinfo[cidx].capi_ctrl;
+				ctrl->appl_released(ctrl, ApplId);
+			}
+		}
+		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 < 4; cidx++) {
+			ctrl = card->ctrlinfo[cidx].capi_ctrl;
+			ctrl->resume_output(ctrl);
+		}
+		break;
+
+	case RECEIVE_STOP:
+		for (cidx=0; cidx < 4; cidx++) {
+			ctrl = card->ctrlinfo[cidx].capi_ctrl;
+			ctrl->suspend_output(ctrl);
+		}
+		break;
+
+	case RECEIVE_INIT:
+
+	        cidx = 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]);
+		ctrl->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] == '\n'
+			   || card->msgbuf[MsgLen] == '\r'))
+			card->msgbuf[MsgLen--] = 0;
+		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] == '\n'
+			   || card->msgbuf[MsgLen] == '\r'))
+			card->msgbuf[MsgLen--] = 0;
+		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 void c4_handle_interrupt(avmcard *card)
+{
+	__u32 status = c4inmeml(card->mbase+DOORBELL);
+
+	if (status & DBELL_RESET_HOST) {
+		int i;
+		c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c);
+		printk(KERN_ERR "%s: unexpected reset\n", card->name);
+                for (i=0; i < 4; i++) {
+			avmctrl_info *cinfo = &card->ctrlinfo[i];
+			memset(cinfo->version, 0, sizeof(cinfo->version));
+			if (cinfo->capi_ctrl)
+				cinfo->capi_ctrl->reseted(cinfo->capi_ctrl);
+		}
+		return;
+	}
+
+	status &= (DBELL_UP_HOST | DBELL_DOWN_HOST);
+	if (!status)
+		return;
+	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, sizeof(card->dma->recvbuf));
+		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);
+		}
+	}
+}
+
+static void c4_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
+{
+	avmcard *card;
+
+	card = (avmcard *) devptr;
+
+	if (!card) {
+		printk(KERN_WARNING "%s: interrupt: wrong device\n", card->name);
+		return;
+	}
+	if (card->interrupt) {
+		printk(KERN_ERR "%s: reentering interrupt hander\n",
+				card->name);
+		return;
+	}
+
+	card->interrupt = 1;
+
+	c4_handle_interrupt(card);
+
+	card->interrupt = 0;
+}
+
+/* ------------------------------------------------------------- */
+
+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, AVM_NAPPS);
+	_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 c4_send_config(avmcard *card, capiloaddatapart * config)
+{
+	struct sk_buff *skb;
+	__u8 val[sizeof(__u32)];
+	void *p;
+	unsigned char *dp;
+	int left, retval;
+	
+	skb = alloc_skb(12 + ((config->len+3)/4)*5, GFP_ATOMIC);
+	if (!skb) {
+		printk(KERN_CRIT "%s: no memory, can't 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, 1);
+	_put_byte(&p, SEND_CONFIG);
+	_put_word(&p, config->len);	/* 12 */
+
+	dp = config->data;
+	left = config->len;
+	while (left >= sizeof(__u32)) {
+	        if (config->user) {
+			retval = copy_from_user(val, dp, sizeof(val));
+			if (retval) {
+				dev_kfree_skb(skb);
+				return -EFAULT;
+			}
+		} else {
+			memcpy(val, dp, sizeof(val));
+		}
+		_put_byte(&p, SEND_CONFIG);
+		_put_byte(&p, val[0]);
+		_put_byte(&p, val[1]);
+		_put_byte(&p, val[2]);
+		_put_byte(&p, val[3]);
+		left -= sizeof(val);
+		dp += sizeof(val);
+	}
+	if (left) {
+		memset(val, 0, sizeof(val));
+		if (config->user) {
+			retval = copy_from_user(&val, dp, left);
+			if (retval) {
+				dev_kfree_skb(skb);
+				return -EFAULT;
+			}
+		} else {
+			memcpy(&val, dp, left);
+		}
+		_put_byte(&p, SEND_CONFIG);
+		_put_byte(&p, val[0]);
+		_put_byte(&p, val[1]);
+		_put_byte(&p, val[2]);
+		_put_byte(&p, val[3]);
+	}
+
+	skb_put(skb, (__u8 *)p - (__u8 *)skb->data);
+
+	skb_queue_tail(&card->dma->send_queue, skb);
+	c4_dispatch_tx(card);
+
+	return 0;
+}
+
+static int c4_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	unsigned long flags;
+	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;
+	}
+
+	save_flags(flags);
+	cli();
+
+	card->csr = 0;
+	c4outmeml(card->mbase+MBOX_UP_LEN, 0);
+	c4outmeml(card->mbase+MBOX_DOWN_LEN, 0);
+	c4outmeml(card->mbase+DOORBELL, DBELL_INIT);
+	udelay(1000);
+	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, virt_to_phys(card->dma->recvbuf));
+	c4outmeml(card->mbase+MBOX_UP_LEN, sizeof(card->dma->recvbuf));
+	c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM);
+	restore_flags(flags);
+
+	if (data->configuration.len > 0 && data->configuration.data)
+		c4_send_config(card, &data->configuration);
+
+        c4_send_init(card);
+
+	return 0;
+}
+
+
+void c4_reset_ctr(struct capi_ctr *ctrl)
+{
+	avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
+	avmctrl_info *cinfo;
+	int i;
+
+ 	c4_reset(card);
+
+        for (i=0; i < 4; i++) {
+		cinfo = &card->ctrlinfo[i];
+		memset(cinfo->version, 0, sizeof(cinfo->version));
+		if (cinfo->capi_ctrl)
+			cinfo->capi_ctrl->reseted(cinfo->capi_ctrl);
+	}
+}
+
+static void c4_remove_ctr(struct capi_ctr *ctrl)
+{
+	avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
+	avmctrl_info *cinfo;
+	int i;
+
+ 	c4_reset(card);
+
+        for (i=0; i <= 4; i++) {
+		cinfo = &card->ctrlinfo[i];
+		if (cinfo->capi_ctrl)
+			di->detach_ctr(cinfo->capi_ctrl);
+	}
+
+	free_irq(card->irq, card);
+	iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
+	release_region(card->port, AVMB1_PORTLEN);
+	ctrl->driverdata = 0;
+	kfree(card->ctrlinfo);
+	kfree(card->dma);
+	kfree(card);
+
+	MOD_DEC_USE_COUNT;
+}
+
+/* ------------------------------------------------------------- */
+
+
+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;
+	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);
+		c4_dispatch_tx(card);
+	}
+
+	ctrl->appl_registered(ctrl, appl);
+}
+
+/* ------------------------------------------------------------- */
+
+void c4_release_appl(struct capi_ctr *ctrl, __u16 appl)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	struct sk_buff *skb;
+	void *p;
+
+	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);
+		c4_dispatch_tx(card);
+	}
+}
+
+/* ------------------------------------------------------------- */
+
+
+static void c4_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
+{
+	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
+	avmcard *card = cinfo->card;
+	skb_queue_tail(&card->dma->send_queue, skb);
+	c4_dispatch_tx(card);
+}
+
+/* ------------------------------------------------------------- */
+
+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;
+	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 capi_driver *driver, struct capicardparams *p)
+{
+	unsigned long base, page_offset;
+	avmctrl_info *cinfo;
+	avmcard *card;
+	int retval;
+	int i;
+
+	MOD_INC_USE_COUNT;
+
+	card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
+
+	if (!card) {
+		printk(KERN_WARNING "%s: no memory.\n", driver->name);
+	        MOD_DEC_USE_COUNT;
+		return -ENOMEM;
+	}
+	memset(card, 0, sizeof(avmcard));
+	card->dma = (avmcard_dmainfo *) kmalloc(sizeof(avmcard_dmainfo), GFP_ATOMIC);
+	if (!card->dma) {
+		printk(KERN_WARNING "%s: no memory.\n", driver->name);
+		kfree(card);
+	        MOD_DEC_USE_COUNT;
+		return -ENOMEM;
+	}
+	memset(card->dma, 0, sizeof(avmcard_dmainfo));
+        cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info)*4, GFP_ATOMIC);
+	if (!cinfo) {
+		printk(KERN_WARNING "%s: no memory.\n", driver->name);
+	        kfree(card->ctrlinfo);
+		kfree(card->dma);
+		kfree(card);
+	        MOD_DEC_USE_COUNT;
+		return -ENOMEM;
+	}
+	memset(cinfo, 0, sizeof(avmctrl_info)*4);
+	card->ctrlinfo = cinfo;
+	for (i=0; i < 4; i++) {
+		cinfo = &card->ctrlinfo[i];
+		cinfo->card = card;
+	}
+	sprintf(card->name, "c4-%x", p->port);
+	card->port = p->port;
+	card->irq = p->irq;
+	card->membase = p->membase;
+	card->cardtype = avm_c4;
+
+	if (check_region(card->port, AVMB1_PORTLEN)) {
+		printk(KERN_WARNING
+		       "%s: ports 0x%03x-0x%03x in use.\n",
+		       driver->name, card->port, card->port + AVMB1_PORTLEN);
+	        kfree(card->ctrlinfo);
+		kfree(card->dma);
+		kfree(card);
+	        MOD_DEC_USE_COUNT;
+		return -EBUSY;
+	}
+
+	base = card->membase & PAGE_MASK;
+	page_offset = card->membase - base;
+	card->mbase = ioremap_nocache(base, page_offset + 128);
+	if (card->mbase) {
+		card->mbase += page_offset;
+	} else {
+		printk(KERN_NOTICE "%s: can't remap memory at 0x%lx\n",
+					driver->name, card->membase);
+	        kfree(card->ctrlinfo);
+		kfree(card->dma);
+		kfree(card);
+	        MOD_DEC_USE_COUNT;
+		return -EIO;
+	}
+
+	if ((retval = c4_detect(card)) != 0) {
+		printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n",
+					driver->name, card->port, retval);
+                iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
+	        kfree(card->ctrlinfo);
+		kfree(card->dma);
+		kfree(card);
+	        MOD_DEC_USE_COUNT;
+		return -EIO;
+	}
+	c4_reset(card);
+
+	request_region(p->port, AVMB1_PORTLEN, card->name);
+
+	retval = request_irq(card->irq, c4_interrupt, SA_SHIRQ, card->name, card);
+	if (retval) {
+		printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+				driver->name, card->irq);
+                iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
+		release_region(card->port, AVMB1_PORTLEN);
+	        kfree(card->ctrlinfo);
+		kfree(card->dma);
+		kfree(card);
+	        MOD_DEC_USE_COUNT;
+		return -EBUSY;
+	}
+
+	for (i=0; i < 4; i++) {
+		cinfo = &card->ctrlinfo[i];
+		cinfo->card = card;
+		cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo);
+		if (!cinfo->capi_ctrl) {
+			printk(KERN_ERR "%s: attach controller failed (%d).\n",
+					driver->name, i);
+			for (i--; i >= 0; i--) {
+				cinfo = &card->ctrlinfo[i];
+				di->detach_ctr(cinfo->capi_ctrl);
+			}
+                	iounmap((void *) (((unsigned long) card->mbase) & PAGE_MASK));
+			free_irq(card->irq, card);
+			release_region(card->port, AVMB1_PORTLEN);
+	        	kfree(card->dma);
+	        	kfree(card->ctrlinfo);
+			kfree(card);
+	        	MOD_DEC_USE_COUNT;
+			return -EBUSY;
+		}
+		if (i == 0)
+			card->cardnr = cinfo->capi_ctrl->cnr;
+	}
+
+	skb_queue_head_init(&card->dma->send_queue);
+
+	printk(KERN_INFO
+		"%s: AVM C4 at i/o %#x, irq %d, mem %#lx\n",
+		driver->name, card->port, card->irq, card->membase);
+
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+static struct capi_driver c4_driver = {
+    "c4",
+    "0.0",
+    c4_load_firmware,
+    c4_reset_ctr,
+    c4_remove_ctr,
+    c4_register_appl,
+    c4_release_appl,
+    c4_send_message,
+
+    c4_procinfo,
+    c4_read_proc,
+    0,	/* use standard driver_read_proc */
+
+    0, /* no add_card function */
+};
+
+#ifdef MODULE
+#define c4_init init_module
+void cleanup_module(void);
+#endif
+
+
+static int ncards = 0;
+
+int c4_init(void)
+{
+	struct capi_driver *driver = &c4_driver;
+	struct pci_dev *dev = NULL;
+	char *p;
+	int retval;
+
+	if ((p = strchr(revision, ':'))) {
+		strncpy(driver->revision, p + 1, sizeof(driver->revision));
+		p = strchr(driver->revision, '$');
+		*p = 0;
+	}
+
+	printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
+
+        di = attach_capi_driver(driver);
+
+	if (!di) {
+		printk(KERN_ERR "%s: failed to attach capi_driver\n",
+				driver->name);
+		return -EIO;
+	}
+
+#ifdef CONFIG_PCI
+	if (!pci_present()) {
+		printk(KERN_ERR "%s: no PCI bus present\n", driver->name);
+    		detach_capi_driver(driver);
+		return -EIO;
+	}
+
+	while ((dev = pci_find_subsys(
+			PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285,
+			PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C4, dev))) {
+		struct capicardparams param;
+
+		param.port = dev->resource[ 1].start & PCI_BASE_ADDRESS_IO_MASK;
+		param.irq = dev->irq;
+		param.membase = dev->resource[ 0].start & PCI_BASE_ADDRESS_MEM_MASK;
+
+		printk(KERN_INFO
+			"%s: PCI BIOS reports AVM-C4 at i/o %#x, irq %d, mem %#x\n",
+			driver->name, param.port, param.irq, param.membase);
+		retval = c4_add_card(driver, &param);
+		if (retval != 0) {
+		        printk(KERN_ERR
+			"%s: no AVM-C4 at i/o %#x, irq %d detected, mem %#x\n",
+			driver->name, param.port, param.irq, param.membase);
+#ifdef MODULE
+			cleanup_module();
+#endif
+			return retval;
+		}
+		ncards++;
+	}
+	if (ncards) {
+		printk(KERN_INFO "%s: %d C4 card(s) detected\n",
+				driver->name, ncards);
+		return 0;
+	}
+	printk(KERN_ERR "%s: NO C4 card detected\n", driver->name);
+	return -ESRCH;
+#else
+	printk(KERN_ERR "%s: kernel not compiled with PCI.\n", driver->name);
+	return -EIO;
+#endif
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+    detach_capi_driver(&c4_driver);
+}
+#endif