1/* $Id: c4.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
2 *
3 * Module for AVM C4 & C2 card.
4 *
5 * Copyright 1999 by Carsten Paeth <calle@calle.de>
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/proc_fs.h>
15#include <linux/seq_file.h>
16#include <linux/skbuff.h>
17#include <linux/delay.h>
18#include <linux/mm.h>
19#include <linux/interrupt.h>
20#include <linux/ioport.h>
21#include <linux/pci.h>
22#include <linux/capi.h>
23#include <linux/kernelcapi.h>
24#include <linux/init.h>
25#include <linux/gfp.h>
26#include <asm/io.h>
27#include <asm/uaccess.h>
28#include <linux/netdevice.h>
29#include <linux/isdn/capicmd.h>
30#include <linux/isdn/capiutil.h>
31#include <linux/isdn/capilli.h>
32#include "avmcard.h"
33
34#undef AVM_C4_DEBUG
35#undef AVM_C4_POLLDEBUG
36
37/* ------------------------------------------------------------- */
38
39static char *revision = "$Revision: 1.1.2.2 $";
40
41/* ------------------------------------------------------------- */
42
43static bool suppress_pollack;
44
45static struct pci_device_id c4_pci_tbl[] = {
46	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C4, 0, 0, (unsigned long)4 },
47	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C2, 0, 0, (unsigned long)2 },
48	{ }			/* Terminating entry */
49};
50
51MODULE_DEVICE_TABLE(pci, c4_pci_tbl);
52MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM C2/C4 cards");
53MODULE_AUTHOR("Carsten Paeth");
54MODULE_LICENSE("GPL");
55module_param(suppress_pollack, bool, 0);
56
57/* ------------------------------------------------------------- */
58
59static void c4_dispatch_tx(avmcard *card);
60
61/* ------------------------------------------------------------- */
62
63#define DC21285_DRAM_A0MR	0x40000000
64#define DC21285_DRAM_A1MR	0x40004000
65#define DC21285_DRAM_A2MR	0x40008000
66#define DC21285_DRAM_A3MR	0x4000C000
67
68#define	CAS_OFFSET	0x88
69
70#define DC21285_ARMCSR_BASE	0x42000000
71
72#define	PCI_OUT_INT_STATUS	0x30
73#define	PCI_OUT_INT_MASK	0x34
74#define	MAILBOX_0		0x50
75#define	MAILBOX_1		0x54
76#define	MAILBOX_2		0x58
77#define	MAILBOX_3		0x5C
78#define	DOORBELL		0x60
79#define	DOORBELL_SETUP		0x64
80
81#define CHAN_1_CONTROL		0x90
82#define CHAN_2_CONTROL		0xB0
83#define DRAM_TIMING		0x10C
84#define DRAM_ADDR_SIZE_0	0x110
85#define DRAM_ADDR_SIZE_1	0x114
86#define DRAM_ADDR_SIZE_2	0x118
87#define DRAM_ADDR_SIZE_3	0x11C
88#define	SA_CONTROL		0x13C
89#define	XBUS_CYCLE		0x148
90#define	XBUS_STROBE		0x14C
91#define	DBELL_PCI_MASK		0x150
92#define DBELL_SA_MASK		0x154
93
94#define SDRAM_SIZE		0x1000000
95
96/* ------------------------------------------------------------- */
97
98#define	MBOX_PEEK_POKE		MAILBOX_0
99
100#define DBELL_ADDR		0x01
101#define DBELL_DATA		0x02
102#define DBELL_RNWR		0x40
103#define DBELL_INIT		0x80
104
105/* ------------------------------------------------------------- */
106
107#define	MBOX_UP_ADDR		MAILBOX_0
108#define	MBOX_UP_LEN		MAILBOX_1
109#define	MBOX_DOWN_ADDR		MAILBOX_2
110#define	MBOX_DOWN_LEN		MAILBOX_3
111
112#define	DBELL_UP_HOST		0x00000100
113#define	DBELL_UP_ARM		0x00000200
114#define	DBELL_DOWN_HOST		0x00000400
115#define	DBELL_DOWN_ARM		0x00000800
116#define	DBELL_RESET_HOST	0x40000000
117#define	DBELL_RESET_ARM		0x80000000
118
119/* ------------------------------------------------------------- */
120
121#define	DRAM_TIMING_DEF		0x001A01A5
122#define DRAM_AD_SZ_DEF0		0x00000045
123#define DRAM_AD_SZ_NULL		0x00000000
124
125#define SA_CTL_ALLRIGHT		0x64AA0271
126
127#define	INIT_XBUS_CYCLE		0x100016DB
128#define	INIT_XBUS_STROBE	0xF1F1F1F1
129
130/* ------------------------------------------------------------- */
131
132#define	RESET_TIMEOUT		(15 * HZ)	/* 15 sec */
133#define	PEEK_POKE_TIMEOUT	(HZ / 10)	/* 0.1 sec */
134
135/* ------------------------------------------------------------- */
136
137#define c4outmeml(addr, value)	writel(value, addr)
138#define c4inmeml(addr)	readl(addr)
139#define c4outmemw(addr, value)	writew(value, addr)
140#define c4inmemw(addr)	readw(addr)
141#define c4outmemb(addr, value)	writeb(value, addr)
142#define c4inmemb(addr)	readb(addr)
143
144/* ------------------------------------------------------------- */
145
146static inline int wait_for_doorbell(avmcard *card, unsigned long t)
147{
148	unsigned long stop;
149
150	stop = jiffies + t;
151	while (c4inmeml(card->mbase + DOORBELL) != 0xffffffff) {
152		if (!time_before(jiffies, stop))
153			return -1;
154		mb();
155	}
156	return 0;
157}
158
159static int c4_poke(avmcard *card,  unsigned long off, unsigned long value)
160{
161
162	if (wait_for_doorbell(card, HZ / 10) < 0)
163		return -1;
164
165	c4outmeml(card->mbase + MBOX_PEEK_POKE, off);
166	c4outmeml(card->mbase + DOORBELL, DBELL_ADDR);
167
168	if (wait_for_doorbell(card, HZ / 10) < 0)
169		return -1;
170
171	c4outmeml(card->mbase + MBOX_PEEK_POKE, value);
172	c4outmeml(card->mbase + DOORBELL, DBELL_DATA | DBELL_ADDR);
173
174	return 0;
175}
176
177static int c4_peek(avmcard *card,  unsigned long off, unsigned long *valuep)
178{
179	if (wait_for_doorbell(card, HZ / 10) < 0)
180		return -1;
181
182	c4outmeml(card->mbase + MBOX_PEEK_POKE, off);
183	c4outmeml(card->mbase + DOORBELL, DBELL_RNWR | DBELL_ADDR);
184
185	if (wait_for_doorbell(card, HZ / 10) < 0)
186		return -1;
187
188	*valuep = c4inmeml(card->mbase + MBOX_PEEK_POKE);
189
190	return 0;
191}
192
193/* ------------------------------------------------------------- */
194
195static int c4_load_t4file(avmcard *card, capiloaddatapart *t4file)
196{
197	u32 val;
198	unsigned char *dp;
199	u_int left;
200	u32 loadoff = 0;
201
202	dp = t4file->data;
203	left = t4file->len;
204	while (left >= sizeof(u32)) {
205		if (t4file->user) {
206			if (copy_from_user(&val, dp, sizeof(val)))
207				return -EFAULT;
208		} else {
209			memcpy(&val, dp, sizeof(val));
210		}
211		if (c4_poke(card, loadoff, val)) {
212			printk(KERN_ERR "%s: corrupted firmware file ?\n",
213			       card->name);
214			return -EIO;
215		}
216		left -= sizeof(u32);
217		dp += sizeof(u32);
218		loadoff += sizeof(u32);
219	}
220	if (left) {
221		val = 0;
222		if (t4file->user) {
223			if (copy_from_user(&val, dp, left))
224				return -EFAULT;
225		} else {
226			memcpy(&val, dp, left);
227		}
228		if (c4_poke(card, loadoff, val)) {
229			printk(KERN_ERR "%s: corrupted firmware file ?\n",
230			       card->name);
231			return -EIO;
232		}
233	}
234	return 0;
235}
236
237/* ------------------------------------------------------------- */
238
239static inline void _put_byte(void **pp, u8 val)
240{
241	u8 *s = *pp;
242	*s++ = val;
243	*pp = s;
244}
245
246static inline void _put_word(void **pp, u32 val)
247{
248	u8 *s = *pp;
249	*s++ = val & 0xff;
250	*s++ = (val >> 8) & 0xff;
251	*s++ = (val >> 16) & 0xff;
252	*s++ = (val >> 24) & 0xff;
253	*pp = s;
254}
255
256static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
257{
258	unsigned i = len;
259	_put_word(pp, i);
260	while (i-- > 0)
261		_put_byte(pp, *dp++);
262}
263
264static inline u8 _get_byte(void **pp)
265{
266	u8 *s = *pp;
267	u8 val;
268	val = *s++;
269	*pp = s;
270	return val;
271}
272
273static inline u32 _get_word(void **pp)
274{
275	u8 *s = *pp;
276	u32 val;
277	val = *s++;
278	val |= (*s++ << 8);
279	val |= (*s++ << 16);
280	val |= (*s++ << 24);
281	*pp = s;
282	return val;
283}
284
285static inline u32 _get_slice(void **pp, unsigned char *dp)
286{
287	unsigned int len, i;
288
289	len = i = _get_word(pp);
290	while (i-- > 0) *dp++ = _get_byte(pp);
291	return len;
292}
293
294/* ------------------------------------------------------------- */
295
296static void c4_reset(avmcard *card)
297{
298	unsigned long stop;
299
300	c4outmeml(card->mbase + DOORBELL, DBELL_RESET_ARM);
301
302	stop = jiffies + HZ * 10;
303	while (c4inmeml(card->mbase + DOORBELL) != 0xffffffff) {
304		if (!time_before(jiffies, stop))
305			return;
306		c4outmeml(card->mbase + DOORBELL, DBELL_ADDR);
307		mb();
308	}
309
310	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
311	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
312}
313
314/* ------------------------------------------------------------- */
315
316static int c4_detect(avmcard *card)
317{
318	unsigned long stop, dummy;
319
320	c4outmeml(card->mbase + PCI_OUT_INT_MASK, 0x0c);
321	if (c4inmeml(card->mbase + PCI_OUT_INT_MASK) != 0x0c)
322		return	1;
323
324	c4outmeml(card->mbase + DOORBELL, DBELL_RESET_ARM);
325
326	stop = jiffies + HZ * 10;
327	while (c4inmeml(card->mbase + DOORBELL) != 0xffffffff) {
328		if (!time_before(jiffies, stop))
329			return 2;
330		c4outmeml(card->mbase + DOORBELL, DBELL_ADDR);
331		mb();
332	}
333
334	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
335	c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
336
337	c4outmeml(card->mbase + MAILBOX_0, 0x55aa55aa);
338	if (c4inmeml(card->mbase + MAILBOX_0) != 0x55aa55aa) return 3;
339
340	c4outmeml(card->mbase + MAILBOX_0, 0xaa55aa55);
341	if (c4inmeml(card->mbase + MAILBOX_0) != 0xaa55aa55) return 4;
342
343	if (c4_poke(card, DC21285_ARMCSR_BASE + DBELL_SA_MASK, 0)) return 5;
344	if (c4_poke(card, DC21285_ARMCSR_BASE + DBELL_PCI_MASK, 0)) return 6;
345	if (c4_poke(card, DC21285_ARMCSR_BASE + SA_CONTROL, SA_CTL_ALLRIGHT))
346		return 7;
347	if (c4_poke(card, DC21285_ARMCSR_BASE + XBUS_CYCLE, INIT_XBUS_CYCLE))
348		return 8;
349	if (c4_poke(card, DC21285_ARMCSR_BASE + XBUS_STROBE, INIT_XBUS_STROBE))
350		return 8;
351	if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_TIMING, 0)) return 9;
352
353	mdelay(1);
354
355	if (c4_peek(card, DC21285_DRAM_A0MR, &dummy)) return 10;
356	if (c4_peek(card, DC21285_DRAM_A1MR, &dummy)) return 11;
357	if (c4_peek(card, DC21285_DRAM_A2MR, &dummy)) return 12;
358	if (c4_peek(card, DC21285_DRAM_A3MR, &dummy)) return 13;
359
360	if (c4_poke(card, DC21285_DRAM_A0MR + CAS_OFFSET, 0)) return 14;
361	if (c4_poke(card, DC21285_DRAM_A1MR + CAS_OFFSET, 0)) return 15;
362	if (c4_poke(card, DC21285_DRAM_A2MR + CAS_OFFSET, 0)) return 16;
363	if (c4_poke(card, DC21285_DRAM_A3MR + CAS_OFFSET, 0)) return 17;
364
365	mdelay(1);
366
367	if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_TIMING, DRAM_TIMING_DEF))
368		return 18;
369
370	if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_0, DRAM_AD_SZ_DEF0))
371		return 19;
372	if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_1, DRAM_AD_SZ_NULL))
373		return 20;
374	if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_2, DRAM_AD_SZ_NULL))
375		return 21;
376	if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_3, DRAM_AD_SZ_NULL))
377		return 22;
378
379	/* Transputer test */
380
381	if (c4_poke(card, 0x000000, 0x11111111)
382	    || c4_poke(card, 0x400000, 0x22222222)
383	       || c4_poke(card, 0x800000, 0x33333333)
384	       || c4_poke(card, 0xC00000, 0x44444444))
385		return 23;
386
387	if (c4_peek(card, 0x000000, &dummy) || dummy != 0x11111111
388	    || c4_peek(card, 0x400000, &dummy) || dummy != 0x22222222
389	       || c4_peek(card, 0x800000, &dummy) || dummy != 0x33333333
390	       || c4_peek(card, 0xC00000, &dummy) || dummy != 0x44444444)
391		return 24;
392
393	if (c4_poke(card, 0x000000, 0x55555555)
394	    || c4_poke(card, 0x400000, 0x66666666)
395	       || c4_poke(card, 0x800000, 0x77777777)
396	       || c4_poke(card, 0xC00000, 0x88888888))
397		return 25;
398
399	if (c4_peek(card, 0x000000, &dummy) || dummy != 0x55555555
400	    || c4_peek(card, 0x400000, &dummy) || dummy != 0x66666666
401	       || c4_peek(card, 0x800000, &dummy) || dummy != 0x77777777
402	       || c4_peek(card, 0xC00000, &dummy) || dummy != 0x88888888)
403		return 26;
404
405	return 0;
406}
407
408/* ------------------------------------------------------------- */
409
410static void c4_dispatch_tx(avmcard *card)
411{
412	avmcard_dmainfo *dma = card->dma;
413	struct sk_buff *skb;
414	u8 cmd, subcmd;
415	u16 len;
416	u32 txlen;
417	void *p;
418
419
420	if (card->csr & DBELL_DOWN_ARM) { /* tx busy */
421		return;
422	}
423
424	skb = skb_dequeue(&dma->send_queue);
425	if (!skb) {
426#ifdef AVM_C4_DEBUG
427		printk(KERN_DEBUG "%s: tx underrun\n", card->name);
428#endif
429		return;
430	}
431
432	len = CAPIMSG_LEN(skb->data);
433
434	if (len) {
435		cmd = CAPIMSG_COMMAND(skb->data);
436		subcmd = CAPIMSG_SUBCOMMAND(skb->data);
437
438		p = dma->sendbuf.dmabuf;
439
440		if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
441			u16 dlen = CAPIMSG_DATALEN(skb->data);
442			_put_byte(&p, SEND_DATA_B3_REQ);
443			_put_slice(&p, skb->data, len);
444			_put_slice(&p, skb->data + len, dlen);
445		} else {
446			_put_byte(&p, SEND_MESSAGE);
447			_put_slice(&p, skb->data, len);
448		}
449		txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf;
450#ifdef AVM_C4_DEBUG
451		printk(KERN_DEBUG "%s: tx put msg len=%d\n", card->name, txlen);
452#endif
453	} else {
454		txlen = skb->len - 2;
455#ifdef AVM_C4_POLLDEBUG
456		if (skb->data[2] == SEND_POLLACK)
457			printk(KERN_INFO "%s: ack to c4\n", card->name);
458#endif
459#ifdef AVM_C4_DEBUG
460		printk(KERN_DEBUG "%s: tx put 0x%x len=%d\n",
461		       card->name, skb->data[2], txlen);
462#endif
463		skb_copy_from_linear_data_offset(skb, 2, dma->sendbuf.dmabuf,
464						 skb->len - 2);
465	}
466	txlen = (txlen + 3) & ~3;
467
468	c4outmeml(card->mbase + MBOX_DOWN_ADDR, dma->sendbuf.dmaaddr);
469	c4outmeml(card->mbase + MBOX_DOWN_LEN, txlen);
470
471	card->csr |= DBELL_DOWN_ARM;
472
473	c4outmeml(card->mbase + DOORBELL, DBELL_DOWN_ARM);
474
475	dev_kfree_skb_any(skb);
476}
477
478/* ------------------------------------------------------------- */
479
480static void queue_pollack(avmcard *card)
481{
482	struct sk_buff *skb;
483	void *p;
484
485	skb = alloc_skb(3, GFP_ATOMIC);
486	if (!skb) {
487		printk(KERN_CRIT "%s: no memory, lost poll ack\n",
488		       card->name);
489		return;
490	}
491	p = skb->data;
492	_put_byte(&p, 0);
493	_put_byte(&p, 0);
494	_put_byte(&p, SEND_POLLACK);
495	skb_put(skb, (u8 *)p - (u8 *)skb->data);
496
497	skb_queue_tail(&card->dma->send_queue, skb);
498	c4_dispatch_tx(card);
499}
500
501/* ------------------------------------------------------------- */
502
503static void c4_handle_rx(avmcard *card)
504{
505	avmcard_dmainfo *dma = card->dma;
506	struct capi_ctr *ctrl;
507	avmctrl_info *cinfo;
508	struct sk_buff *skb;
509	void *p = dma->recvbuf.dmabuf;
510	u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
511	u8 b1cmd =  _get_byte(&p);
512	u32 cidx;
513
514
515#ifdef AVM_C4_DEBUG
516	printk(KERN_DEBUG "%s: rx 0x%x len=%lu\n", card->name,
517	       b1cmd, (unsigned long)dma->recvlen);
518#endif
519
520	switch (b1cmd) {
521	case RECEIVE_DATA_B3_IND:
522
523		ApplId = (unsigned) _get_word(&p);
524		MsgLen = _get_slice(&p, card->msgbuf);
525		DataB3Len = _get_slice(&p, card->databuf);
526		cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
527		if (cidx >= card->nlogcontr) cidx = 0;
528		ctrl = &card->ctrlinfo[cidx].capi_ctrl;
529
530		if (MsgLen < 30) { /* not CAPI 64Bit */
531			memset(card->msgbuf + MsgLen, 0, 30 - MsgLen);
532			MsgLen = 30;
533			CAPIMSG_SETLEN(card->msgbuf, 30);
534		}
535		if (!(skb = alloc_skb(DataB3Len + MsgLen, GFP_ATOMIC))) {
536			printk(KERN_ERR "%s: incoming packet dropped\n",
537			       card->name);
538		} else {
539			memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
540			memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
541			capi_ctr_handle_message(ctrl, ApplId, skb);
542		}
543		break;
544
545	case RECEIVE_MESSAGE:
546
547		ApplId = (unsigned) _get_word(&p);
548		MsgLen = _get_slice(&p, card->msgbuf);
549		cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
550		if (cidx >= card->nlogcontr) cidx = 0;
551		cinfo = &card->ctrlinfo[cidx];
552		ctrl = &card->ctrlinfo[cidx].capi_ctrl;
553
554		if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
555			printk(KERN_ERR "%s: incoming packet dropped\n",
556			       card->name);
557		} else {
558			memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
559			if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF)
560				capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
561						     CAPIMSG_NCCI(skb->data),
562						     CAPIMSG_MSGID(skb->data));
563
564			capi_ctr_handle_message(ctrl, ApplId, skb);
565		}
566		break;
567
568	case RECEIVE_NEW_NCCI:
569
570		ApplId = _get_word(&p);
571		NCCI = _get_word(&p);
572		WindowSize = _get_word(&p);
573		cidx = (NCCI & 0x7f) - card->cardnr;
574		if (cidx >= card->nlogcontr) cidx = 0;
575
576		capilib_new_ncci(&card->ctrlinfo[cidx].ncci_head, ApplId, NCCI, WindowSize);
577
578		break;
579
580	case RECEIVE_FREE_NCCI:
581
582		ApplId = _get_word(&p);
583		NCCI = _get_word(&p);
584
585		if (NCCI != 0xffffffff) {
586			cidx = (NCCI & 0x7f) - card->cardnr;
587			if (cidx >= card->nlogcontr) cidx = 0;
588			capilib_free_ncci(&card->ctrlinfo[cidx].ncci_head, ApplId, NCCI);
589		}
590		break;
591
592	case RECEIVE_START:
593#ifdef AVM_C4_POLLDEBUG
594		printk(KERN_INFO "%s: poll from c4\n", card->name);
595#endif
596		if (!suppress_pollack)
597			queue_pollack(card);
598		for (cidx = 0; cidx < card->nr_controllers; cidx++) {
599			ctrl = &card->ctrlinfo[cidx].capi_ctrl;
600			capi_ctr_resume_output(ctrl);
601		}
602		break;
603
604	case RECEIVE_STOP:
605		for (cidx = 0; cidx < card->nr_controllers; cidx++) {
606			ctrl = &card->ctrlinfo[cidx].capi_ctrl;
607			capi_ctr_suspend_output(ctrl);
608		}
609		break;
610
611	case RECEIVE_INIT:
612
613		cidx = card->nlogcontr;
614		if (cidx >= card->nr_controllers) {
615			printk(KERN_ERR "%s: card with %d controllers ??\n",
616			       card->name, cidx + 1);
617			break;
618		}
619		card->nlogcontr++;
620		cinfo = &card->ctrlinfo[cidx];
621		ctrl = &cinfo->capi_ctrl;
622		cinfo->versionlen = _get_slice(&p, cinfo->versionbuf);
623		b1_parse_version(cinfo);
624		printk(KERN_INFO "%s: %s-card (%s) now active\n",
625		       card->name,
626		       cinfo->version[VER_CARDTYPE],
627		       cinfo->version[VER_DRIVER]);
628		capi_ctr_ready(&cinfo->capi_ctrl);
629		break;
630
631	case RECEIVE_TASK_READY:
632		ApplId = (unsigned) _get_word(&p);
633		MsgLen = _get_slice(&p, card->msgbuf);
634		card->msgbuf[MsgLen] = 0;
635		while (MsgLen > 0
636		       && (card->msgbuf[MsgLen - 1] == '\n'
637			   || card->msgbuf[MsgLen - 1] == '\r')) {
638			card->msgbuf[MsgLen - 1] = 0;
639			MsgLen--;
640		}
641		printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
642		       card->name, ApplId, card->msgbuf);
643		break;
644
645	case RECEIVE_DEBUGMSG:
646		MsgLen = _get_slice(&p, card->msgbuf);
647		card->msgbuf[MsgLen] = 0;
648		while (MsgLen > 0
649		       && (card->msgbuf[MsgLen - 1] == '\n'
650			   || card->msgbuf[MsgLen - 1] == '\r')) {
651			card->msgbuf[MsgLen - 1] = 0;
652			MsgLen--;
653		}
654		printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
655		break;
656
657	default:
658		printk(KERN_ERR "%s: c4_interrupt: 0x%x ???\n",
659		       card->name, b1cmd);
660		return;
661	}
662}
663
664/* ------------------------------------------------------------- */
665
666static irqreturn_t c4_handle_interrupt(avmcard *card)
667{
668	unsigned long flags;
669	u32 status;
670
671	spin_lock_irqsave(&card->lock, flags);
672	status = c4inmeml(card->mbase + DOORBELL);
673
674	if (status & DBELL_RESET_HOST) {
675		u_int i;
676		c4outmeml(card->mbase + PCI_OUT_INT_MASK, 0x0c);
677		spin_unlock_irqrestore(&card->lock, flags);
678		if (card->nlogcontr == 0)
679			return IRQ_HANDLED;
680		printk(KERN_ERR "%s: unexpected reset\n", card->name);
681		for (i = 0; i < card->nr_controllers; i++) {
682			avmctrl_info *cinfo = &card->ctrlinfo[i];
683			memset(cinfo->version, 0, sizeof(cinfo->version));
684			spin_lock_irqsave(&card->lock, flags);
685			capilib_release(&cinfo->ncci_head);
686			spin_unlock_irqrestore(&card->lock, flags);
687			capi_ctr_down(&cinfo->capi_ctrl);
688		}
689		card->nlogcontr = 0;
690		return IRQ_HANDLED;
691	}
692
693	status &= (DBELL_UP_HOST | DBELL_DOWN_HOST);
694	if (!status) {
695		spin_unlock_irqrestore(&card->lock, flags);
696		return IRQ_HANDLED;
697	}
698	c4outmeml(card->mbase + DOORBELL, status);
699
700	if ((status & DBELL_UP_HOST) != 0) {
701		card->dma->recvlen = c4inmeml(card->mbase + MBOX_UP_LEN);
702		c4outmeml(card->mbase + MBOX_UP_LEN, 0);
703		c4_handle_rx(card);
704		card->dma->recvlen = 0;
705		c4outmeml(card->mbase + MBOX_UP_LEN, card->dma->recvbuf.size);
706		c4outmeml(card->mbase + DOORBELL, DBELL_UP_ARM);
707	}
708
709	if ((status & DBELL_DOWN_HOST) != 0) {
710		card->csr &= ~DBELL_DOWN_ARM;
711		c4_dispatch_tx(card);
712	} else if (card->csr & DBELL_DOWN_HOST) {
713		if (c4inmeml(card->mbase + MBOX_DOWN_LEN) == 0) {
714			card->csr &= ~DBELL_DOWN_ARM;
715			c4_dispatch_tx(card);
716		}
717	}
718	spin_unlock_irqrestore(&card->lock, flags);
719	return IRQ_HANDLED;
720}
721
722static irqreturn_t c4_interrupt(int interrupt, void *devptr)
723{
724	avmcard *card = devptr;
725
726	return c4_handle_interrupt(card);
727}
728
729/* ------------------------------------------------------------- */
730
731static void c4_send_init(avmcard *card)
732{
733	struct sk_buff *skb;
734	void *p;
735	unsigned long flags;
736
737	skb = alloc_skb(15, GFP_ATOMIC);
738	if (!skb) {
739		printk(KERN_CRIT "%s: no memory, lost register appl.\n",
740		       card->name);
741		return;
742	}
743	p = skb->data;
744	_put_byte(&p, 0);
745	_put_byte(&p, 0);
746	_put_byte(&p, SEND_INIT);
747	_put_word(&p, CAPI_MAXAPPL);
748	_put_word(&p, AVM_NCCI_PER_CHANNEL * 30);
749	_put_word(&p, card->cardnr - 1);
750	skb_put(skb, (u8 *)p - (u8 *)skb->data);
751
752	skb_queue_tail(&card->dma->send_queue, skb);
753	spin_lock_irqsave(&card->lock, flags);
754	c4_dispatch_tx(card);
755	spin_unlock_irqrestore(&card->lock, flags);
756}
757
758static int queue_sendconfigword(avmcard *card, u32 val)
759{
760	struct sk_buff *skb;
761	unsigned long flags;
762	void *p;
763
764	skb = alloc_skb(3 + 4, GFP_ATOMIC);
765	if (!skb) {
766		printk(KERN_CRIT "%s: no memory, send config\n",
767		       card->name);
768		return -ENOMEM;
769	}
770	p = skb->data;
771	_put_byte(&p, 0);
772	_put_byte(&p, 0);
773	_put_byte(&p, SEND_CONFIG);
774	_put_word(&p, val);
775	skb_put(skb, (u8 *)p - (u8 *)skb->data);
776
777	skb_queue_tail(&card->dma->send_queue, skb);
778	spin_lock_irqsave(&card->lock, flags);
779	c4_dispatch_tx(card);
780	spin_unlock_irqrestore(&card->lock, flags);
781	return 0;
782}
783
784static int queue_sendconfig(avmcard *card, char cval[4])
785{
786	struct sk_buff *skb;
787	unsigned long flags;
788	void *p;
789
790	skb = alloc_skb(3 + 4, GFP_ATOMIC);
791	if (!skb) {
792		printk(KERN_CRIT "%s: no memory, send config\n",
793		       card->name);
794		return -ENOMEM;
795	}
796	p = skb->data;
797	_put_byte(&p, 0);
798	_put_byte(&p, 0);
799	_put_byte(&p, SEND_CONFIG);
800	_put_byte(&p, cval[0]);
801	_put_byte(&p, cval[1]);
802	_put_byte(&p, cval[2]);
803	_put_byte(&p, cval[3]);
804	skb_put(skb, (u8 *)p - (u8 *)skb->data);
805
806	skb_queue_tail(&card->dma->send_queue, skb);
807
808	spin_lock_irqsave(&card->lock, flags);
809	c4_dispatch_tx(card);
810	spin_unlock_irqrestore(&card->lock, flags);
811	return 0;
812}
813
814static int c4_send_config(avmcard *card, capiloaddatapart *config)
815{
816	u8 val[4];
817	unsigned char *dp;
818	u_int left;
819	int retval;
820
821	if ((retval = queue_sendconfigword(card, 1)) != 0)
822		return retval;
823	if ((retval = queue_sendconfigword(card, config->len)) != 0)
824		return retval;
825
826	dp = config->data;
827	left = config->len;
828	while (left >= sizeof(u32)) {
829		if (config->user) {
830			if (copy_from_user(val, dp, sizeof(val)))
831				return -EFAULT;
832		} else {
833			memcpy(val, dp, sizeof(val));
834		}
835		if ((retval = queue_sendconfig(card, val)) != 0)
836			return retval;
837		left -= sizeof(val);
838		dp += sizeof(val);
839	}
840	if (left) {
841		memset(val, 0, sizeof(val));
842		if (config->user) {
843			if (copy_from_user(&val, dp, left))
844				return -EFAULT;
845		} else {
846			memcpy(&val, dp, left);
847		}
848		if ((retval = queue_sendconfig(card, val)) != 0)
849			return retval;
850	}
851
852	return 0;
853}
854
855static int c4_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
856{
857	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
858	avmcard *card = cinfo->card;
859	int retval;
860
861	if ((retval = c4_load_t4file(card, &data->firmware))) {
862		printk(KERN_ERR "%s: failed to load t4file!!\n",
863		       card->name);
864		c4_reset(card);
865		return retval;
866	}
867
868	card->csr = 0;
869	c4outmeml(card->mbase + MBOX_UP_LEN, 0);
870	c4outmeml(card->mbase + MBOX_DOWN_LEN, 0);
871	c4outmeml(card->mbase + DOORBELL, DBELL_INIT);
872	mdelay(1);
873	c4outmeml(card->mbase + DOORBELL,
874		  DBELL_UP_HOST | DBELL_DOWN_HOST | DBELL_RESET_HOST);
875
876	c4outmeml(card->mbase + PCI_OUT_INT_MASK, 0x08);
877
878	card->dma->recvlen = 0;
879	c4outmeml(card->mbase + MBOX_UP_ADDR, card->dma->recvbuf.dmaaddr);
880	c4outmeml(card->mbase + MBOX_UP_LEN, card->dma->recvbuf.size);
881	c4outmeml(card->mbase + DOORBELL, DBELL_UP_ARM);
882
883	if (data->configuration.len > 0 && data->configuration.data) {
884		retval = c4_send_config(card, &data->configuration);
885		if (retval) {
886			printk(KERN_ERR "%s: failed to set config!!\n",
887			       card->name);
888			c4_reset(card);
889			return retval;
890		}
891	}
892
893	c4_send_init(card);
894
895	return 0;
896}
897
898
899static void c4_reset_ctr(struct capi_ctr *ctrl)
900{
901	avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
902	avmctrl_info *cinfo;
903	u_int i;
904	unsigned long flags;
905
906	spin_lock_irqsave(&card->lock, flags);
907
908	c4_reset(card);
909
910	spin_unlock_irqrestore(&card->lock, flags);
911
912	for (i = 0; i < card->nr_controllers; i++) {
913		cinfo = &card->ctrlinfo[i];
914		memset(cinfo->version, 0, sizeof(cinfo->version));
915		capi_ctr_down(&cinfo->capi_ctrl);
916	}
917	card->nlogcontr = 0;
918}
919
920static void c4_remove(struct pci_dev *pdev)
921{
922	avmcard *card = pci_get_drvdata(pdev);
923	avmctrl_info *cinfo;
924	u_int i;
925
926	if (!card)
927		return;
928
929	c4_reset(card);
930
931	for (i = 0; i < card->nr_controllers; i++) {
932		cinfo = &card->ctrlinfo[i];
933		detach_capi_ctr(&cinfo->capi_ctrl);
934	}
935
936	free_irq(card->irq, card);
937	iounmap(card->mbase);
938	release_region(card->port, AVMB1_PORTLEN);
939	avmcard_dma_free(card->dma);
940	pci_set_drvdata(pdev, NULL);
941	b1_free_card(card);
942}
943
944/* ------------------------------------------------------------- */
945
946
947static void c4_register_appl(struct capi_ctr *ctrl,
948			     u16 appl,
949			     capi_register_params *rp)
950{
951	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
952	avmcard *card = cinfo->card;
953	struct sk_buff *skb;
954	int want = rp->level3cnt;
955	unsigned long flags;
956	int nconn;
957	void *p;
958
959	if (ctrl->cnr == card->cardnr) {
960
961		if (want > 0) nconn = want;
962		else nconn = ctrl->profile.nbchannel * 4 * -want;
963		if (nconn == 0) nconn = ctrl->profile.nbchannel * 4;
964
965		skb = alloc_skb(23, GFP_ATOMIC);
966		if (!skb) {
967			printk(KERN_CRIT "%s: no memory, lost register appl.\n",
968			       card->name);
969			return;
970		}
971		p = skb->data;
972		_put_byte(&p, 0);
973		_put_byte(&p, 0);
974		_put_byte(&p, SEND_REGISTER);
975		_put_word(&p, appl);
976		_put_word(&p, 1024 * (nconn + 1));
977		_put_word(&p, nconn);
978		_put_word(&p, rp->datablkcnt);
979		_put_word(&p, rp->datablklen);
980		skb_put(skb, (u8 *)p - (u8 *)skb->data);
981
982		skb_queue_tail(&card->dma->send_queue, skb);
983
984		spin_lock_irqsave(&card->lock, flags);
985		c4_dispatch_tx(card);
986		spin_unlock_irqrestore(&card->lock, flags);
987	}
988}
989
990/* ------------------------------------------------------------- */
991
992static void c4_release_appl(struct capi_ctr *ctrl, u16 appl)
993{
994	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
995	avmcard *card = cinfo->card;
996	unsigned long flags;
997	struct sk_buff *skb;
998	void *p;
999
1000	spin_lock_irqsave(&card->lock, flags);
1001	capilib_release_appl(&cinfo->ncci_head, appl);
1002	spin_unlock_irqrestore(&card->lock, flags);
1003
1004	if (ctrl->cnr == card->cardnr) {
1005		skb = alloc_skb(7, GFP_ATOMIC);
1006		if (!skb) {
1007			printk(KERN_CRIT "%s: no memory, lost release appl.\n",
1008			       card->name);
1009			return;
1010		}
1011		p = skb->data;
1012		_put_byte(&p, 0);
1013		_put_byte(&p, 0);
1014		_put_byte(&p, SEND_RELEASE);
1015		_put_word(&p, appl);
1016
1017		skb_put(skb, (u8 *)p - (u8 *)skb->data);
1018		skb_queue_tail(&card->dma->send_queue, skb);
1019		spin_lock_irqsave(&card->lock, flags);
1020		c4_dispatch_tx(card);
1021		spin_unlock_irqrestore(&card->lock, flags);
1022	}
1023}
1024
1025/* ------------------------------------------------------------- */
1026
1027
1028static u16 c4_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
1029{
1030	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
1031	avmcard *card = cinfo->card;
1032	u16 retval = CAPI_NOERROR;
1033	unsigned long flags;
1034
1035	spin_lock_irqsave(&card->lock, flags);
1036	if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
1037		retval = capilib_data_b3_req(&cinfo->ncci_head,
1038					     CAPIMSG_APPID(skb->data),
1039					     CAPIMSG_NCCI(skb->data),
1040					     CAPIMSG_MSGID(skb->data));
1041	}
1042	if (retval == CAPI_NOERROR) {
1043		skb_queue_tail(&card->dma->send_queue, skb);
1044		c4_dispatch_tx(card);
1045	}
1046	spin_unlock_irqrestore(&card->lock, flags);
1047	return retval;
1048}
1049
1050/* ------------------------------------------------------------- */
1051
1052static char *c4_procinfo(struct capi_ctr *ctrl)
1053{
1054	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
1055
1056	if (!cinfo)
1057		return "";
1058	sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
1059		cinfo->cardname[0] ? cinfo->cardname : "-",
1060		cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
1061		cinfo->card ? cinfo->card->port : 0x0,
1062		cinfo->card ? cinfo->card->irq : 0,
1063		cinfo->card ? cinfo->card->membase : 0
1064		);
1065	return cinfo->infobuf;
1066}
1067
1068static int c4_proc_show(struct seq_file *m, void *v)
1069{
1070	struct capi_ctr *ctrl = m->private;
1071	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
1072	avmcard *card = cinfo->card;
1073	u8 flag;
1074	char *s;
1075
1076	seq_printf(m, "%-16s %s\n", "name", card->name);
1077	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
1078	seq_printf(m, "%-16s %d\n", "irq", card->irq);
1079	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
1080	switch (card->cardtype) {
1081	case avm_b1isa: s = "B1 ISA"; break;
1082	case avm_b1pci: s = "B1 PCI"; break;
1083	case avm_b1pcmcia: s = "B1 PCMCIA"; break;
1084	case avm_m1: s = "M1"; break;
1085	case avm_m2: s = "M2"; break;
1086	case avm_t1isa: s = "T1 ISA (HEMA)"; break;
1087	case avm_t1pci: s = "T1 PCI"; break;
1088	case avm_c4: s = "C4"; break;
1089	case avm_c2: s = "C2"; break;
1090	default: s = "???"; break;
1091	}
1092	seq_printf(m, "%-16s %s\n", "type", s);
1093	if ((s = cinfo->version[VER_DRIVER]) != NULL)
1094		seq_printf(m, "%-16s %s\n", "ver_driver", s);
1095	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
1096		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
1097	if ((s = cinfo->version[VER_SERIAL]) != NULL)
1098		seq_printf(m, "%-16s %s\n", "ver_serial", s);
1099
1100	if (card->cardtype != avm_m1) {
1101		flag = ((u8 *)(ctrl->profile.manu))[3];
1102		if (flag)
1103			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
1104				   "protocol",
1105				   (flag & 0x01) ? " DSS1" : "",
1106				   (flag & 0x02) ? " CT1" : "",
1107				   (flag & 0x04) ? " VN3" : "",
1108				   (flag & 0x08) ? " NI1" : "",
1109				   (flag & 0x10) ? " AUSTEL" : "",
1110				   (flag & 0x20) ? " ESS" : "",
1111				   (flag & 0x40) ? " 1TR6" : ""
1112				);
1113	}
1114	if (card->cardtype != avm_m1) {
1115		flag = ((u8 *)(ctrl->profile.manu))[5];
1116		if (flag)
1117			seq_printf(m, "%-16s%s%s%s%s\n",
1118				   "linetype",
1119				   (flag & 0x01) ? " point to point" : "",
1120				   (flag & 0x02) ? " point to multipoint" : "",
1121				   (flag & 0x08) ? " leased line without D-channel" : "",
1122				   (flag & 0x04) ? " leased line with D-channel" : ""
1123				);
1124	}
1125	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
1126
1127	return 0;
1128}
1129
1130static int c4_proc_open(struct inode *inode, struct file *file)
1131{
1132	return single_open(file, c4_proc_show, PDE_DATA(inode));
1133}
1134
1135static const struct file_operations c4_proc_fops = {
1136	.owner		= THIS_MODULE,
1137	.open		= c4_proc_open,
1138	.read		= seq_read,
1139	.llseek		= seq_lseek,
1140	.release	= single_release,
1141};
1142
1143/* ------------------------------------------------------------- */
1144
1145static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
1146		       int nr_controllers)
1147{
1148	avmcard *card;
1149	avmctrl_info *cinfo;
1150	int retval;
1151	int i;
1152
1153	card = b1_alloc_card(nr_controllers);
1154	if (!card) {
1155		printk(KERN_WARNING "c4: no memory.\n");
1156		retval = -ENOMEM;
1157		goto err;
1158	}
1159	card->dma = avmcard_dma_alloc("c4", dev, 2048 + 128, 2048 + 128);
1160	if (!card->dma) {
1161		printk(KERN_WARNING "c4: no memory.\n");
1162		retval = -ENOMEM;
1163		goto err_free;
1164	}
1165
1166	sprintf(card->name, "c%d-%x", nr_controllers, p->port);
1167	card->port = p->port;
1168	card->irq = p->irq;
1169	card->membase = p->membase;
1170	card->cardtype = (nr_controllers == 4) ? avm_c4 : avm_c2;
1171
1172	if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
1173		printk(KERN_WARNING "c4: ports 0x%03x-0x%03x in use.\n",
1174		       card->port, card->port + AVMB1_PORTLEN);
1175		retval = -EBUSY;
1176		goto err_free_dma;
1177	}
1178
1179	card->mbase = ioremap(card->membase, 128);
1180	if (card->mbase == NULL) {
1181		printk(KERN_NOTICE "c4: can't remap memory at 0x%lx\n",
1182		       card->membase);
1183		retval = -EIO;
1184		goto err_release_region;
1185	}
1186
1187	retval = c4_detect(card);
1188	if (retval != 0) {
1189		printk(KERN_NOTICE "c4: NO card at 0x%x error(%d)\n",
1190		       card->port, retval);
1191		retval = -EIO;
1192		goto err_unmap;
1193	}
1194	c4_reset(card);
1195
1196	retval = request_irq(card->irq, c4_interrupt, IRQF_SHARED, card->name, card);
1197	if (retval) {
1198		printk(KERN_ERR "c4: unable to get IRQ %d.\n", card->irq);
1199		retval = -EBUSY;
1200		goto err_unmap;
1201	}
1202
1203	for (i = 0; i < nr_controllers; i++) {
1204		cinfo = &card->ctrlinfo[i];
1205		cinfo->capi_ctrl.owner = THIS_MODULE;
1206		cinfo->capi_ctrl.driver_name   = "c4";
1207		cinfo->capi_ctrl.driverdata    = cinfo;
1208		cinfo->capi_ctrl.register_appl = c4_register_appl;
1209		cinfo->capi_ctrl.release_appl  = c4_release_appl;
1210		cinfo->capi_ctrl.send_message  = c4_send_message;
1211		cinfo->capi_ctrl.load_firmware = c4_load_firmware;
1212		cinfo->capi_ctrl.reset_ctr     = c4_reset_ctr;
1213		cinfo->capi_ctrl.procinfo      = c4_procinfo;
1214		cinfo->capi_ctrl.proc_fops = &c4_proc_fops;
1215		strcpy(cinfo->capi_ctrl.name, card->name);
1216
1217		retval = attach_capi_ctr(&cinfo->capi_ctrl);
1218		if (retval) {
1219			printk(KERN_ERR "c4: attach controller failed (%d).\n", i);
1220			for (i--; i >= 0; i--) {
1221				cinfo = &card->ctrlinfo[i];
1222				detach_capi_ctr(&cinfo->capi_ctrl);
1223			}
1224			goto err_free_irq;
1225		}
1226		if (i == 0)
1227			card->cardnr = cinfo->capi_ctrl.cnr;
1228	}
1229
1230	printk(KERN_INFO "c4: AVM C%d at i/o %#x, irq %d, mem %#lx\n",
1231	       nr_controllers, card->port, card->irq,
1232	       card->membase);
1233	pci_set_drvdata(dev, card);
1234	return 0;
1235
1236err_free_irq:
1237	free_irq(card->irq, card);
1238err_unmap:
1239	iounmap(card->mbase);
1240err_release_region:
1241	release_region(card->port, AVMB1_PORTLEN);
1242err_free_dma:
1243	avmcard_dma_free(card->dma);
1244err_free:
1245	b1_free_card(card);
1246err:
1247	return retval;
1248}
1249
1250/* ------------------------------------------------------------- */
1251
1252static int c4_probe(struct pci_dev *dev, const struct pci_device_id *ent)
1253{
1254	int nr = ent->driver_data;
1255	int retval = 0;
1256	struct capicardparams param;
1257
1258	if (pci_enable_device(dev) < 0) {
1259		printk(KERN_ERR "c4: failed to enable AVM-C%d\n", nr);
1260		return -ENODEV;
1261	}
1262	pci_set_master(dev);
1263
1264	param.port = pci_resource_start(dev, 1);
1265	param.irq = dev->irq;
1266	param.membase = pci_resource_start(dev, 0);
1267
1268	printk(KERN_INFO "c4: PCI BIOS reports AVM-C%d at i/o %#x, irq %d, mem %#x\n",
1269	       nr, param.port, param.irq, param.membase);
1270
1271	retval = c4_add_card(&param, dev, nr);
1272	if (retval != 0) {
1273		printk(KERN_ERR "c4: no AVM-C%d at i/o %#x, irq %d detected, mem %#x\n",
1274		       nr, param.port, param.irq, param.membase);
1275		pci_disable_device(dev);
1276		return -ENODEV;
1277	}
1278	return 0;
1279}
1280
1281static struct pci_driver c4_pci_driver = {
1282	.name           = "c4",
1283	.id_table       = c4_pci_tbl,
1284	.probe          = c4_probe,
1285	.remove         = c4_remove,
1286};
1287
1288static struct capi_driver capi_driver_c2 = {
1289	.name		= "c2",
1290	.revision	= "1.0",
1291};
1292
1293static struct capi_driver capi_driver_c4 = {
1294	.name		= "c4",
1295	.revision	= "1.0",
1296};
1297
1298static int __init c4_init(void)
1299{
1300	char *p;
1301	char rev[32];
1302	int err;
1303
1304	if ((p = strchr(revision, ':')) != NULL && p[1]) {
1305		strlcpy(rev, p + 2, 32);
1306		if ((p = strchr(rev, '$')) != NULL && p > rev)
1307			*(p - 1) = 0;
1308	} else
1309		strcpy(rev, "1.0");
1310
1311	err = pci_register_driver(&c4_pci_driver);
1312	if (!err) {
1313		strlcpy(capi_driver_c2.revision, rev, 32);
1314		register_capi_driver(&capi_driver_c2);
1315		strlcpy(capi_driver_c4.revision, rev, 32);
1316		register_capi_driver(&capi_driver_c4);
1317		printk(KERN_INFO "c4: revision %s\n", rev);
1318	}
1319	return err;
1320}
1321
1322static void __exit c4_exit(void)
1323{
1324	unregister_capi_driver(&capi_driver_c2);
1325	unregister_capi_driver(&capi_driver_c4);
1326	pci_unregister_driver(&c4_pci_driver);
1327}
1328
1329module_init(c4_init);
1330module_exit(c4_exit);
1331