patch-2.2.11 linux/drivers/isdn/avmb1/b1.c

• Lines: 680
• Date: Mon Aug 9 12:04:39 1999
• Orig file: v2.2.10/linux/drivers/isdn/avmb1/b1.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.10/linux/drivers/isdn/avmb1/b1.c linux/drivers/isdn/avmb1/b1.c
@@ -0,0 +1,679 @@
+/*
+ * $Id: b1.c,v 1.4 1999/07/09 15:05:38 keil Exp $
+ * 
+ * Common module for AVM B1 cards.
+ * 
+ * (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
+ * 
+ * $Log: b1.c,v $
+ * Revision 1.4  1999/07/09 15:05:38  keil
+ * compat.h is now isdn_compat.h
+ *
+ * Revision 1.3  1999/07/06 07:41:59  calle
+ * - changes in /proc interface
+ * - check and changed calls to [dev_]kfree_skb and [dev_]alloc_skb.
+ *
+ * Revision 1.2  1999/07/05 15:09:47  calle
+ * - renamed "appl_release" to "appl_released".
+ * - version und profile data now cleared on controller reset
+ * - extended /proc interface, to allow driver and controller specific
+ *   informations to include by driver hackers.
+ *
+ * Revision 1.1  1999/07/01 15:26:23  calle
+ * complete new version (I love it):
+ * + new hardware independed "capi_driver" interface that will make it easy to:
+ *   - support other controllers with CAPI-2.0 (i.e. USB Controller)
+ *   - write a CAPI-2.0 for the passive cards
+ *   - support serial link CAPI-2.0 boxes.
+ * + wrote "capi_driver" for all supported cards.
+ * + "capi_driver" (supported cards) now have to be configured with
+ *   make menuconfig, in the past all supported cards where included
+ *   at once.
+ * + new and better informations in /proc/capi/
+ * + new ioctl to switch trace of capi messages per controller
+ *   using "avmcapictrl trace [contr] on|off|...."
+ * + complete testcircle with all supported cards and also the
+ *   PCMCIA cards (now patch for pcmcia-cs-3.0.13 needed) done.
+ *
+ *
+ */
+
+#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/capi.h>
+#include <asm/io.h>
+#include <linux/isdn_compat.h>
+#include "capilli.h"
+#include "avmcard.h"
+#include "capicmd.h"
+#include "capiutil.h"
+
+static char *revision = "$Revision: 1.4 $";
+
+/* ------------------------------------------------------------- */
+
+MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
+
+/* ------------------------------------------------------------- */
+
+int b1_irq_table[16] =
+{0,
+ 0,
+ 0,
+ 192,				/* irq 3 */
+ 32,				/* irq 4 */
+ 160,				/* irq 5 */
+ 96,				/* irq 6 */
+ 224,				/* irq 7 */
+ 0,
+ 64,				/* irq 9 */
+ 80,				/* irq 10 */
+ 208,				/* irq 11 */
+ 48,				/* irq 12 */
+ 0,
+ 0,
+ 112,				/* irq 15 */
+};
+
+/* ------------------------------------------------------------- */
+
+int b1_detect(unsigned int base, enum avmcardtype cardtype)
+{
+	int onoff, i;
+
+	/*
+	 * Statusregister 0000 00xx 
+	 */
+	if ((inb(base + B1_INSTAT) & 0xfc)
+	    || (inb(base + B1_OUTSTAT) & 0xfc))
+		return 1;
+	/*
+	 * Statusregister 0000 001x 
+	 */
+	b1outp(base, B1_INSTAT, 0x2);	/* enable irq */
+	/* b1outp(base, B1_OUTSTAT, 0x2); */
+	if ((inb(base + B1_INSTAT) & 0xfe) != 0x2
+	    /* || (inb(base + B1_OUTSTAT) & 0xfe) != 0x2 */)
+		return 2;
+	/*
+	 * Statusregister 0000 000x 
+	 */
+	b1outp(base, B1_INSTAT, 0x0);	/* disable irq */
+	b1outp(base, B1_OUTSTAT, 0x0);
+	if ((inb(base + B1_INSTAT) & 0xfe)
+	    || (inb(base + B1_OUTSTAT) & 0xfe))
+		return 3;
+        
+	for (onoff = !0, i= 0; i < 10 ; i++) {
+		b1_set_test_bit(base, cardtype, onoff);
+		if (b1_get_test_bit(base, cardtype) != onoff)
+		   return 4;
+		onoff = !onoff;
+	}
+
+	if (cardtype == avm_m1)
+	   return 0;
+
+        if ((b1_rd_reg(base, B1_STAT1(cardtype)) & 0x0f) != 0x01)
+	   return 5;
+
+	return 0;
+}
+
+int b1_load_t4file(unsigned int base, capiloaddatapart * t4file)
+{
+	unsigned char buf[256];
+	unsigned char *dp;
+	int i, left, retval;
+
+	dp = t4file->data;
+	left = t4file->len;
+	while (left > sizeof(buf)) {
+		if (t4file->user) {
+			retval = copy_from_user(buf, dp, sizeof(buf));
+			if (retval)
+				return -EFAULT;
+		} else {
+			memcpy(buf, dp, sizeof(buf));
+		}
+		for (i = 0; i < sizeof(buf); i++)
+			if (b1_save_put_byte(base, buf[i]) < 0) {
+				printk(KERN_ERR "b1_load_t4file: corrupted t4 file ?\n");
+				return -EIO;
+			}
+		left -= sizeof(buf);
+		dp += sizeof(buf);
+	}
+	if (left) {
+		if (t4file->user) {
+			retval = copy_from_user(buf, dp, left);
+			if (retval)
+				return -EFAULT;
+		} else {
+			memcpy(buf, dp, left);
+		}
+		for (i = 0; i < left; i++)
+			if (b1_save_put_byte(base, buf[i]) < 0) {
+				printk(KERN_ERR "b1_load_t4file: corrupted t4 file ?\n");
+				return -EIO;
+			}
+	}
+	return 0;
+}
+
+int b1_load_config(unsigned int base, capiloaddatapart * config)
+{
+	unsigned char buf[256];
+	unsigned char *dp;
+	int i, j, left, retval;
+
+	dp = config->data;
+	left = config->len;
+	if (left) {
+		b1_put_byte(base, SEND_CONFIG);
+        	b1_put_word(base, 1);
+		b1_put_byte(base, SEND_CONFIG);
+        	b1_put_word(base, left);
+	}
+	while (left > sizeof(buf)) {
+		if (config->user) {
+			retval = copy_from_user(buf, dp, sizeof(buf));
+			if (retval)
+				return -EFAULT;
+		} else {
+			memcpy(buf, dp, sizeof(buf));
+		}
+		for (i = 0; i < sizeof(buf); ) {
+			b1_put_byte(base, SEND_CONFIG);
+			for (j=0; j < 4; j++) {
+				b1_put_byte(base, buf[i++]);
+			}
+		}
+		left -= sizeof(buf);
+		dp += sizeof(buf);
+	}
+	if (left) {
+		if (config->user) {
+			retval = copy_from_user(buf, dp, left);
+			if (retval)
+				return -EFAULT;
+		} else {
+			memcpy(buf, dp, left);
+		}
+		for (i = 0; i < left; ) {
+			b1_put_byte(base, SEND_CONFIG);
+			for (j=0; j < 4; j++) {
+				if (i < left)
+					b1_put_byte(base, buf[i++]);
+				else
+					b1_put_byte(base, 0);
+			}
+		}
+	}
+	return 0;
+}
+
+int b1_loaded(unsigned int base)
+{
+	unsigned long stop;
+	unsigned char ans;
+	unsigned long tout = 2;
+
+	for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
+		if (b1_tx_empty(base))
+			break;
+	}
+	if (!b1_tx_empty(base)) {
+		printk(KERN_ERR "b1_loaded: tx err, corrupted t4 file ?\n");
+		return 0;
+	}
+	b1_put_byte(base, SEND_POLL);
+	for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) {
+		if (b1_rx_full(base)) {
+			if ((ans = b1_get_byte(base)) == RECEIVE_POLL) {
+				return 1;
+			}
+			printk(KERN_ERR "b1_loaded: got 0x%x, firmware not running\n", ans);
+			return 0;
+		}
+	}
+	printk(KERN_ERR "b1_loaded: firmware not running\n");
+	return 0;
+}
+
+/* ------------------------------------------------------------- */
+
+int b1_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+	unsigned long flags;
+	int retval;
+
+	b1_reset(port);
+
+	if ((retval = b1_load_t4file(port, &data->firmware))) {
+		b1_reset(port);
+		printk(KERN_ERR "%s: failed to load t4file!!\n",
+					card->name);
+		return retval;
+	}
+
+	b1_disable_irq(port);
+
+	if (data->configuration.len > 0 && data->configuration.data) {
+		if ((retval = b1_load_config(port, &data->configuration))) {
+			b1_reset(port);
+			printk(KERN_ERR "%s: failed to load config!!\n",
+					card->name);
+			return retval;
+		}
+	}
+
+	if (!b1_loaded(port)) {
+		printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
+		return -EIO;
+	}
+
+	save_flags(flags);
+	cli();
+	b1_setinterrupt(port, card->irq, card->cardtype);
+	b1_put_byte(port, SEND_INIT);
+	b1_put_word(port, AVM_NAPPS);
+	b1_put_word(port, AVM_NCCI_PER_CHANNEL*2);
+	b1_put_word(port, ctrl->cnr - 1);
+	restore_flags(flags);
+
+	return 0;
+}
+
+void b1_reset_ctr(struct capi_ctr *ctrl)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+
+	b1_reset(port);
+	b1_reset(port);
+
+	memset(card->version, 0, sizeof(card->version));
+	ctrl->reseted(ctrl);
+}
+
+void b1_register_appl(struct capi_ctr *ctrl,
+				__u16 appl,
+				capi_register_params *rp)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+	unsigned long flags;
+	int nconn, want = rp->level3cnt;
+
+	if (want > 0) nconn = want;
+	else nconn = ctrl->profile.nbchannel * -want;
+	if (nconn == 0) nconn = ctrl->profile.nbchannel;
+
+	save_flags(flags);
+	cli();
+	b1_put_byte(port, SEND_REGISTER);
+	b1_put_word(port, appl);
+	b1_put_word(port, 1024 * (nconn+1));
+	b1_put_word(port, nconn);
+	b1_put_word(port, rp->datablkcnt);
+	b1_put_word(port, rp->datablklen);
+	restore_flags(flags);
+
+	ctrl->appl_registered(ctrl, appl);
+}
+
+void b1_release_appl(struct capi_ctr *ctrl, __u16 appl)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+	b1_put_byte(port, SEND_RELEASE);
+	b1_put_word(port, appl);
+	restore_flags(flags);
+}
+
+void b1_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	unsigned int port = card->port;
+	unsigned long flags;
+	__u16 len = CAPIMSG_LEN(skb->data);
+	__u8 cmd = CAPIMSG_COMMAND(skb->data);
+	__u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
+
+	save_flags(flags);
+	cli();
+	if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
+		__u16 dlen = CAPIMSG_DATALEN(skb->data);
+		b1_put_byte(port, SEND_DATA_B3_REQ);
+		b1_put_slice(port, skb->data, len);
+		b1_put_slice(port, skb->data + len, dlen);
+	} else {
+		b1_put_byte(port, SEND_MESSAGE);
+		b1_put_slice(port, skb->data, len);
+	}
+	restore_flags(flags);
+	dev_kfree_skb(skb);
+}
+
+/* ------------------------------------------------------------- */
+
+void b1_parse_version(avmcard *card)
+{
+	struct capi_ctr *ctrl = card->ctrl;
+	capi_profile *profp;
+	__u8 *dversion;
+	__u8 flag;
+	int i, j;
+
+	for (j = 0; j < AVM_MAXVERSION; j++)
+		card->version[j] = "\0\0" + 1;
+	for (i = 0, j = 0;
+	     j < AVM_MAXVERSION && i < card->versionlen;
+	     j++, i += card->versionbuf[i] + 1)
+		card->version[j] = &card->versionbuf[i + 1];
+
+	strncpy(ctrl->serial, card->version[VER_SERIAL], CAPI_SERIAL_LEN);
+	memcpy(&ctrl->profile, card->version[VER_PROFILE],sizeof(capi_profile));
+	strncpy(ctrl->manu, "AVM GmbH", CAPI_MANUFACTURER_LEN);
+	dversion = card->version[VER_DRIVER];
+	ctrl->version.majorversion = 2;
+	ctrl->version.minorversion = 0;
+	ctrl->version.majormanuversion = (((dversion[0] - '0') & 0xf) << 4);
+	ctrl->version.majormanuversion |= ((dversion[2] - '0') & 0xf);
+	ctrl->version.minormanuversion = (dversion[3] - '0') << 4;
+	ctrl->version.minormanuversion |=
+			(dversion[5] - '0') * 10 + ((dversion[6] - '0') & 0xf);
+
+	profp = &ctrl->profile;
+
+	flag = ((__u8 *)(profp->manu))[1];
+	switch (flag) {
+	case 0: strcpy(card->cardname, "B1"); break;
+	case 3: strcpy(card->cardname,"PCMCIA B"); break;
+	case 4: strcpy(card->cardname,"PCMCIA M1"); break;
+	case 5: strcpy(card->cardname,"PCMCIA M2"); break;
+	case 6: strcpy(card->cardname,"B1 V3.0"); break;
+	case 7: strcpy(card->cardname,"B1 PCI"); break;
+	default: sprintf(card->cardname, "AVM?%u", (unsigned int)flag); break;
+        }
+        printk(KERN_NOTICE "%s: card %d \"%s\" ready.\n",
+				card->name, ctrl->cnr, card->cardname);
+
+        flag = ((__u8 *)(profp->manu))[3];
+        if (flag)
+		printk(KERN_NOTICE "b1capi: card %d Protocol:%s%s%s%s%s%s%s\n",
+			ctrl->cnr,
+			(flag & 0x01) ? " DSS1" : "",
+			(flag & 0x02) ? " CT1" : "",
+			(flag & 0x04) ? " VN3" : "",
+			(flag & 0x08) ? " NI1" : "",
+			(flag & 0x10) ? " AUSTEL" : "",
+			(flag & 0x20) ? " ESS" : "",
+			(flag & 0x40) ? " 1TR6" : ""
+			);
+
+        flag = ((__u8 *)(profp->manu))[5];
+	if (flag)
+		printk(KERN_NOTICE "%s: card %d Linetype:%s%s%s%s\n",
+			card->name,
+			ctrl->cnr,
+			(flag & 0x01) ? " point to point" : "",
+			(flag & 0x02) ? " point to multipoint" : "",
+			(flag & 0x08) ? " leased line without D-channel" : "",
+			(flag & 0x04) ? " leased line with D-channel" : ""
+			);
+}
+
+/* ------------------------------------------------------------- */
+
+void b1_handle_interrupt(avmcard * card)
+{
+	struct capi_ctr *ctrl = card->ctrl;
+	unsigned char b1cmd;
+	struct sk_buff *skb;
+
+	unsigned ApplId;
+	unsigned MsgLen;
+	unsigned DataB3Len;
+	unsigned NCCI;
+	unsigned WindowSize;
+
+	if (!b1_rx_full(card->port))
+	   return;
+
+	b1cmd = b1_get_byte(card->port);
+
+	switch (b1cmd) {
+
+	case RECEIVE_DATA_B3_IND:
+
+		ApplId = (unsigned) b1_get_word(card->port);
+		MsgLen = b1_get_slice(card->port, card->msgbuf);
+		DataB3Len = b1_get_slice(card->port, card->databuf);
+
+		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);
+			CAPIMSG_SETDATA(skb->data, skb->data + MsgLen);
+			ctrl->handle_capimsg(ctrl, ApplId, skb);
+		}
+		break;
+
+	case RECEIVE_MESSAGE:
+
+		ApplId = (unsigned) b1_get_word(card->port);
+		MsgLen = b1_get_slice(card->port, card->msgbuf);
+		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 = b1_get_word(card->port);
+		NCCI = b1_get_word(card->port);
+		WindowSize = b1_get_word(card->port);
+
+		ctrl->new_ncci(ctrl, ApplId, NCCI, WindowSize);
+
+		break;
+
+	case RECEIVE_FREE_NCCI:
+
+		ApplId = b1_get_word(card->port);
+		NCCI = b1_get_word(card->port);
+
+		if (NCCI != 0xffffffff)
+			ctrl->free_ncci(ctrl, ApplId, NCCI);
+		else ctrl->appl_released(ctrl, ApplId);
+		break;
+
+	case RECEIVE_START:
+	   	/* b1_put_byte(card->port, SEND_POLLACK); */
+		ctrl->resume_output(ctrl);
+		break;
+
+	case RECEIVE_STOP:
+		ctrl->suspend_output(ctrl);
+		break;
+
+	case RECEIVE_INIT:
+
+		card->versionlen = b1_get_slice(card->port, card->versionbuf);
+		b1_parse_version(card);
+		printk(KERN_INFO "%s: %s-card (%s) now active\n",
+		       card->name,
+		       card->version[VER_CARDTYPE],
+		       card->version[VER_DRIVER]);
+		ctrl->ready(ctrl);
+		break;
+
+        case RECEIVE_TASK_READY:
+		ApplId = (unsigned) b1_get_word(card->port);
+		MsgLen = b1_get_slice(card->port, 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 = b1_get_slice(card->port, 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;
+
+	case 0xff:
+		printk(KERN_ERR "%s: card removed ?\n", card->name);
+		return;
+	default:
+		printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
+				card->name, b1cmd);
+		return;
+	}
+}
+
+/* ------------------------------------------------------------- */
+int b1ctl_read_proc(char *page, char **start, off_t off,
+        		int count, int *eof, struct capi_ctr *ctrl)
+{
+	avmcard *card = (avmcard *)(ctrl->driverdata);
+	__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);
+	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;
+	default: s = "???"; break;
+	}
+	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	if (card->cardtype == avm_t1isa)
+	   len += sprintf(page+len, "%-16s %d\n", "cardnr", card->cardnr);
+	if ((s = card->version[VER_DRIVER]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+	if ((s = card->version[VER_CARDTYPE]) != 0)
+	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+	if ((s = card->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", card->cardname);
+
+	if (len < off) 
+           return 0;
+	*eof = 1;
+	*start = page - off;
+	return ((count < len-off) ? count : len-off);
+	if (len < off) 
+           return 0;
+	*eof = 1;
+	*start = page - off;
+	return ((count < len-off) ? count : len-off);
+}
+
+/* ------------------------------------------------------------- */
+
+EXPORT_SYMBOL(b1_irq_table);
+
+EXPORT_SYMBOL(b1_detect);
+EXPORT_SYMBOL(b1_load_t4file);
+EXPORT_SYMBOL(b1_load_config);
+EXPORT_SYMBOL(b1_loaded);
+EXPORT_SYMBOL(b1_load_firmware);
+EXPORT_SYMBOL(b1_reset_ctr);
+EXPORT_SYMBOL(b1_register_appl);
+EXPORT_SYMBOL(b1_release_appl);
+EXPORT_SYMBOL(b1_send_message);
+
+EXPORT_SYMBOL(b1_parse_version);
+EXPORT_SYMBOL(b1_handle_interrupt);
+
+EXPORT_SYMBOL(b1ctl_read_proc);
+
+#ifdef MODULE
+#define b1_init init_module
+void cleanup_module(void);
+#endif
+
+int b1_init(void)
+{
+	char *p;
+	char rev[10];
+
+	if ((p = strchr(revision, ':'))) {
+		strncpy(rev, p + 1, sizeof(rev));
+		p = strchr(rev, '$');
+		*p = 0;
+	} else
+		strcpy(rev, "1.0");
+
+	printk(KERN_INFO "b1: revision %s\n", rev);
+
+	return 0;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+}
+#endif