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conn rcv_lock converted to spinlock, struct cor_sock created, kernel_packet skb_clone...
[cor_2_6_31.git] / drivers / isdn / hardware / avm / t1isa.c
blob1c53fd49adb6e36f35445c9a86d76e6b9e70eaaa
1 /* $Id: t1isa.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $
2 *
3 * Module for AVM T1 HEMA-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/skbuff.h>
15 #include <linux/delay.h>
16 #include <linux/mm.h>
17 #include <linux/interrupt.h>
18 #include <linux/ioport.h>
19 #include <linux/capi.h>
20 #include <linux/netdevice.h>
21 #include <linux/kernelcapi.h>
22 #include <linux/init.h>
23 #include <linux/pci.h>
24 #include <asm/io.h>
25 #include <linux/isdn/capicmd.h>
26 #include <linux/isdn/capiutil.h>
27 #include <linux/isdn/capilli.h>
28 #include "avmcard.h"
29
30 /* ------------------------------------------------------------- */
31
32 static char *revision = "$Revision: 1.1.2.3 $";
33
34 /* ------------------------------------------------------------- */
35
36 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 HEMA ISA card");
37 MODULE_AUTHOR("Carsten Paeth");
38 MODULE_LICENSE("GPL");
39
40 /* ------------------------------------------------------------- */
41
42 static int hema_irq_table[16] =
43 {0,
44 0,
45 0,
46 0x80, /* irq 3 */
47 0,
48 0x90, /* irq 5 */
49 0,
50 0xA0, /* irq 7 */
51 0,
52 0xB0, /* irq 9 */
53 0xC0, /* irq 10 */
54 0xD0, /* irq 11 */
55 0xE0, /* irq 12 */
56 0,
57 0,
58 0xF0, /* irq 15 */
59 };
60
61 static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr)
62 {
63 unsigned char cregs[8];
64 unsigned char reverse_cardnr;
65 unsigned char dummy;
66 int i;
67
68 reverse_cardnr = ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1)
69 | ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3);
70 cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf);
71 cregs[1] = 0x00; /* fast & slow link connected to CON1 */
72 cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */
73 cregs[3] = 0;
74 cregs[4] = 0x11; /* zero wait state */
75 cregs[5] = hema_irq_table[irq & 0xf];
76 cregs[6] = 0;
77 cregs[7] = 0;
78
79 /*
80 * no one else should use the ISA bus in this moment,
81 * but no function there to prevent this :-(
82 * save_flags(flags); cli();
83 */
84
85 /* board reset */
86 t1outp(base, T1_RESETBOARD, 0xf);
87 mdelay(100);
88 dummy = t1inp(base, T1_FASTLINK+T1_OUTSTAT); /* first read */
89
90 /* write config */
91 dummy = (base >> 4) & 0xff;
92 for (i=1;i<=0xf;i++) t1outp(base, i, dummy);
93 t1outp(base, HEMA_PAL_ID & 0xf, dummy);
94 t1outp(base, HEMA_PAL_ID >> 4, cregs[0]);
95 for(i=1;i<7;i++) t1outp(base, 0, cregs[i]);
96 t1outp(base, ((base >> 4)) & 0x3, cregs[7]);
97 /* restore_flags(flags); */
98
99 mdelay(100);
100 t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
101 t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
102 mdelay(10);
103 t1outp(base, T1_FASTLINK+T1_RESETLINK, 1);
104 t1outp(base, T1_SLOWLINK+T1_RESETLINK, 1);
105 mdelay(100);
106 t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
107 t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
108 mdelay(10);
109 t1outp(base, T1_FASTLINK+T1_ANALYSE, 0);
110 mdelay(5);
111 t1outp(base, T1_SLOWLINK+T1_ANALYSE, 0);
112
113 if (t1inp(base, T1_FASTLINK+T1_OUTSTAT) != 0x1) /* tx empty */
114 return 1;
115 if (t1inp(base, T1_FASTLINK+T1_INSTAT) != 0x0) /* rx empty */
116 return 2;
117 if (t1inp(base, T1_FASTLINK+T1_IRQENABLE) != 0x0)
118 return 3;
119 if ((t1inp(base, T1_FASTLINK+T1_FIFOSTAT) & 0xf0) != 0x70)
120 return 4;
121 if ((t1inp(base, T1_FASTLINK+T1_IRQMASTER) & 0x0e) != 0)
122 return 5;
123 if ((t1inp(base, T1_FASTLINK+T1_IDENT) & 0x7d) != 1)
124 return 6;
125 if (t1inp(base, T1_SLOWLINK+T1_OUTSTAT) != 0x1) /* tx empty */
126 return 7;
127 if ((t1inp(base, T1_SLOWLINK+T1_IRQMASTER) & 0x0e) != 0)
128 return 8;
129 if ((t1inp(base, T1_SLOWLINK+T1_IDENT) & 0x7d) != 0)
130 return 9;
131 return 0;
132 }
133
134 static irqreturn_t t1isa_interrupt(int interrupt, void *devptr)
135 {
136 avmcard *card = devptr;
137 avmctrl_info *cinfo = &card->ctrlinfo[0];
138 struct capi_ctr *ctrl = &cinfo->capi_ctrl;
139 unsigned char b1cmd;
140 struct sk_buff *skb;
141
142 unsigned ApplId;
143 unsigned MsgLen;
144 unsigned DataB3Len;
145 unsigned NCCI;
146 unsigned WindowSize;
147 unsigned long flags;
148
149 spin_lock_irqsave(&card->lock, flags);
150
151 while (b1_rx_full(card->port)) {
152
153 b1cmd = b1_get_byte(card->port);
154
155 switch (b1cmd) {
156
157 case RECEIVE_DATA_B3_IND:
158
159 ApplId = (unsigned) b1_get_word(card->port);
160 MsgLen = t1_get_slice(card->port, card->msgbuf);
161 DataB3Len = t1_get_slice(card->port, card->databuf);
162 spin_unlock_irqrestore(&card->lock, flags);
163
164 if (MsgLen < 30) { /* not CAPI 64Bit */
165 memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
166 MsgLen = 30;
167 CAPIMSG_SETLEN(card->msgbuf, 30);
168 }
169 if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
170 printk(KERN_ERR "%s: incoming packet dropped\n",
171 card->name);
172 } else {
173 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
174 memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
175 capi_ctr_handle_message(ctrl, ApplId, skb);
176 }
177 break;
178
179 case RECEIVE_MESSAGE:
180
181 ApplId = (unsigned) b1_get_word(card->port);
182 MsgLen = t1_get_slice(card->port, card->msgbuf);
183 if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
184 spin_unlock_irqrestore(&card->lock, flags);
185 printk(KERN_ERR "%s: incoming packet dropped\n",
186 card->name);
187 } else {
188 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
189 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3)
190 capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
191 CAPIMSG_NCCI(skb->data),
192 CAPIMSG_MSGID(skb->data));
193 spin_unlock_irqrestore(&card->lock, flags);
194 capi_ctr_handle_message(ctrl, ApplId, skb);
195 }
196 break;
197
198 case RECEIVE_NEW_NCCI:
199
200 ApplId = b1_get_word(card->port);
201 NCCI = b1_get_word(card->port);
202 WindowSize = b1_get_word(card->port);
203 capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
204 spin_unlock_irqrestore(&card->lock, flags);
205 break;
206
207 case RECEIVE_FREE_NCCI:
208
209 ApplId = b1_get_word(card->port);
210 NCCI = b1_get_word(card->port);
211 if (NCCI != 0xffffffff)
212 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
213 spin_unlock_irqrestore(&card->lock, flags);
214 break;
215
216 case RECEIVE_START:
217 b1_put_byte(card->port, SEND_POLLACK);
218 spin_unlock_irqrestore(&card->lock, flags);
219 capi_ctr_resume_output(ctrl);
220 break;
221
222 case RECEIVE_STOP:
223 spin_unlock_irqrestore(&card->lock, flags);
224 capi_ctr_suspend_output(ctrl);
225 break;
226
227 case RECEIVE_INIT:
228
229 cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
230 spin_unlock_irqrestore(&card->lock, flags);
231 b1_parse_version(cinfo);
232 printk(KERN_INFO "%s: %s-card (%s) now active\n",
233 card->name,
234 cinfo->version[VER_CARDTYPE],
235 cinfo->version[VER_DRIVER]);
236 capi_ctr_ready(ctrl);
237 break;
238
239 case RECEIVE_TASK_READY:
240 ApplId = (unsigned) b1_get_word(card->port);
241 MsgLen = t1_get_slice(card->port, card->msgbuf);
242 spin_unlock_irqrestore(&card->lock, flags);
243 card->msgbuf[MsgLen] = 0;
244 while ( MsgLen > 0
245 && ( card->msgbuf[MsgLen-1] == '\n'
246 || card->msgbuf[MsgLen-1] == '\r')) {
247 card->msgbuf[MsgLen-1] = 0;
248 MsgLen--;
249 }
250 printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
251 card->name, ApplId, card->msgbuf);
252 break;
253
254 case RECEIVE_DEBUGMSG:
255 MsgLen = t1_get_slice(card->port, card->msgbuf);
256 spin_unlock_irqrestore(&card->lock, flags);
257 card->msgbuf[MsgLen] = 0;
258 while ( MsgLen > 0
259 && ( card->msgbuf[MsgLen-1] == '\n'
260 || card->msgbuf[MsgLen-1] == '\r')) {
261 card->msgbuf[MsgLen-1] = 0;
262 MsgLen--;
263 }
264 printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
265 break;
266
267
268 case 0xff:
269 spin_unlock_irqrestore(&card->lock, flags);
270 printk(KERN_ERR "%s: card reseted ?\n", card->name);
271 return IRQ_HANDLED;
272 default:
273 spin_unlock_irqrestore(&card->lock, flags);
274 printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
275 card->name, b1cmd);
276 return IRQ_NONE;
277 }
278 }
279 return IRQ_HANDLED;
280 }
281
282 /* ------------------------------------------------------------- */
283
284 static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
285 {
286 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
287 avmcard *card = cinfo->card;
288 unsigned int port = card->port;
289 unsigned long flags;
290 int retval;
291
292 t1_disable_irq(port);
293 b1_reset(port);
294
295 if ((retval = b1_load_t4file(card, &data->firmware))) {
296 b1_reset(port);
297 printk(KERN_ERR "%s: failed to load t4file!!\n",
298 card->name);
299 return retval;
300 }
301
302 if (data->configuration.len > 0 && data->configuration.data) {
303 if ((retval = b1_load_config(card, &data->configuration))) {
304 b1_reset(port);
305 printk(KERN_ERR "%s: failed to load config!!\n",
306 card->name);
307 return retval;
308 }
309 }
310
311 if (!b1_loaded(card)) {
312 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
313 return -EIO;
314 }
315
316 spin_lock_irqsave(&card->lock, flags);
317 b1_setinterrupt(port, card->irq, card->cardtype);
318 b1_put_byte(port, SEND_INIT);
319 b1_put_word(port, CAPI_MAXAPPL);
320 b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
321 b1_put_word(port, ctrl->cnr - 1);
322 spin_unlock_irqrestore(&card->lock, flags);
323
324 return 0;
325 }
326
327 static void t1isa_reset_ctr(struct capi_ctr *ctrl)
328 {
329 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
330 avmcard *card = cinfo->card;
331 unsigned int port = card->port;
332 unsigned long flags;
333
334 t1_disable_irq(port);
335 b1_reset(port);
336 b1_reset(port);
337
338 memset(cinfo->version, 0, sizeof(cinfo->version));
339 spin_lock_irqsave(&card->lock, flags);
340 capilib_release(&cinfo->ncci_head);
341 spin_unlock_irqrestore(&card->lock, flags);
342 capi_ctr_down(ctrl);
343 }
344
345 static void t1isa_remove(struct pci_dev *pdev)
346 {
347 avmctrl_info *cinfo = pci_get_drvdata(pdev);
348 avmcard *card;
349
350 if (!cinfo)
351 return;
352
353 card = cinfo->card;
354
355 t1_disable_irq(card->port);
356 b1_reset(card->port);
357 b1_reset(card->port);
358 t1_reset(card->port);
359
360 detach_capi_ctr(&cinfo->capi_ctrl);
361 free_irq(card->irq, card);
362 release_region(card->port, AVMB1_PORTLEN);
363 b1_free_card(card);
364 }
365
366 /* ------------------------------------------------------------- */
367
368 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
369 static char *t1isa_procinfo(struct capi_ctr *ctrl);
370
371 static int t1isa_probe(struct pci_dev *pdev, int cardnr)
372 {
373 avmctrl_info *cinfo;
374 avmcard *card;
375 int retval;
376
377 card = b1_alloc_card(1);
378 if (!card) {
379 printk(KERN_WARNING "t1isa: no memory.\n");
380 retval = -ENOMEM;
381 goto err;
382 }
383
384 cinfo = card->ctrlinfo;
385 card->port = pci_resource_start(pdev, 0);
386 card->irq = pdev->irq;
387 card->cardtype = avm_t1isa;
388 card->cardnr = cardnr;
389 sprintf(card->name, "t1isa-%x", card->port);
390
391 if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) {
392 printk(KERN_WARNING "t1isa: invalid port 0x%x.\n", card->port);
393 retval = -EINVAL;
394 goto err_free;
395 }
396 if (hema_irq_table[card->irq & 0xf] == 0) {
397 printk(KERN_WARNING "t1isa: irq %d not valid.\n", card->irq);
398 retval = -EINVAL;
399 goto err_free;
400 }
401 if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
402 printk(KERN_INFO "t1isa: ports 0x%03x-0x%03x in use.\n",
403 card->port, card->port + AVMB1_PORTLEN);
404 retval = -EBUSY;
405 goto err_free;
406 }
407 retval = request_irq(card->irq, t1isa_interrupt, 0, card->name, card);
408 if (retval) {
409 printk(KERN_INFO "t1isa: unable to get IRQ %d.\n", card->irq);
410 retval = -EBUSY;
411 goto err_release_region;
412 }
413
414 if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 0) {
415 printk(KERN_INFO "t1isa: NO card at 0x%x (%d)\n",
416 card->port, retval);
417 retval = -ENODEV;
418 goto err_free_irq;
419 }
420 t1_disable_irq(card->port);
421 b1_reset(card->port);
422
423 cinfo->capi_ctrl.owner = THIS_MODULE;
424 cinfo->capi_ctrl.driver_name = "t1isa";
425 cinfo->capi_ctrl.driverdata = cinfo;
426 cinfo->capi_ctrl.register_appl = b1_register_appl;
427 cinfo->capi_ctrl.release_appl = b1_release_appl;
428 cinfo->capi_ctrl.send_message = t1isa_send_message;
429 cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
430 cinfo->capi_ctrl.reset_ctr = t1isa_reset_ctr;
431 cinfo->capi_ctrl.procinfo = t1isa_procinfo;
432 cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
433 strcpy(cinfo->capi_ctrl.name, card->name);
434
435 retval = attach_capi_ctr(&cinfo->capi_ctrl);
436 if (retval) {
437 printk(KERN_INFO "t1isa: attach controller failed.\n");
438 goto err_free_irq;
439 }
440
441 printk(KERN_INFO "t1isa: AVM T1 ISA at i/o %#x, irq %d, card %d\n",
442 card->port, card->irq, card->cardnr);
443
444 pci_set_drvdata(pdev, cinfo);
445 return 0;
446
447 err_free_irq:
448 free_irq(card->irq, card);
449 err_release_region:
450 release_region(card->port, AVMB1_PORTLEN);
451 err_free:
452 b1_free_card(card);
453 err:
454 return retval;
455 }
456
457 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
458 {
459 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
460 avmcard *card = cinfo->card;
461 unsigned int port = card->port;
462 unsigned long flags;
463 u16 len = CAPIMSG_LEN(skb->data);
464 u8 cmd = CAPIMSG_COMMAND(skb->data);
465 u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
466 u16 dlen, retval;
467
468 spin_lock_irqsave(&card->lock, flags);
469 if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
470 retval = capilib_data_b3_req(&cinfo->ncci_head,
471 CAPIMSG_APPID(skb->data),
472 CAPIMSG_NCCI(skb->data),
473 CAPIMSG_MSGID(skb->data));
474 if (retval != CAPI_NOERROR) {
475 spin_unlock_irqrestore(&card->lock, flags);
476 return retval;
477 }
478 dlen = CAPIMSG_DATALEN(skb->data);
479
480 b1_put_byte(port, SEND_DATA_B3_REQ);
481 t1_put_slice(port, skb->data, len);
482 t1_put_slice(port, skb->data + len, dlen);
483 } else {
484 b1_put_byte(port, SEND_MESSAGE);
485 t1_put_slice(port, skb->data, len);
486 }
487 spin_unlock_irqrestore(&card->lock, flags);
488 dev_kfree_skb_any(skb);
489 return CAPI_NOERROR;
490 }
491 /* ------------------------------------------------------------- */
492
493 static char *t1isa_procinfo(struct capi_ctr *ctrl)
494 {
495 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
496
497 if (!cinfo)
498 return "";
499 sprintf(cinfo->infobuf, "%s %s 0x%x %d %d",
500 cinfo->cardname[0] ? cinfo->cardname : "-",
501 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
502 cinfo->card ? cinfo->card->port : 0x0,
503 cinfo->card ? cinfo->card->irq : 0,
504 cinfo->card ? cinfo->card->cardnr : 0
505 );
506 return cinfo->infobuf;
507 }
508
509
510 /* ------------------------------------------------------------- */
511
512 #define MAX_CARDS 4
513 static struct pci_dev isa_dev[MAX_CARDS];
514 static int io[MAX_CARDS];
515 static int irq[MAX_CARDS];
516 static int cardnr[MAX_CARDS];
517
518 module_param_array(io, int, NULL, 0);
519 module_param_array(irq, int, NULL, 0);
520 module_param_array(cardnr, int, NULL, 0);
521 MODULE_PARM_DESC(io, "I/O base address(es)");
522 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
523 MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)");
524
525 static int t1isa_add_card(struct capi_driver *driver, capicardparams *data)
526 {
527 int i;
528
529 for (i = 0; i < MAX_CARDS; i++) {
530 if (isa_dev[i].resource[0].start)
531 continue;
532
533 isa_dev[i].resource[0].start = data->port;
534 isa_dev[i].irq = data->irq;
535
536 if (t1isa_probe(&isa_dev[i], data->cardnr) == 0)
537 return 0;
538 }
539 return -ENODEV;
540 }
541
542 static struct capi_driver capi_driver_t1isa = {
543 .name = "t1isa",
544 .revision = "1.0",
545 .add_card = t1isa_add_card,
546 };
547
548 static int __init t1isa_init(void)
549 {
550 char rev[32];
551 char *p;
552 int i;
553
554 if ((p = strchr(revision, ':')) != NULL && p[1]) {
555 strlcpy(rev, p + 2, 32);
556 if ((p = strchr(rev, '$')) != NULL && p > rev)
557 *(p-1) = 0;
558 } else
559 strcpy(rev, "1.0");
560
561 for (i = 0; i < MAX_CARDS; i++) {
562 if (!io[i])
563 break;
564
565 isa_dev[i].resource[0].start = io[i];
566 isa_dev[i].irq = irq[i];
567
568 if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0)
569 return -ENODEV;
570 }
571
572 strlcpy(capi_driver_t1isa.revision, rev, 32);
573 register_capi_driver(&capi_driver_t1isa);
574 printk(KERN_INFO "t1isa: revision %s\n", rev);
575
576 return 0;
577 }
578
579 static void __exit t1isa_exit(void)
580 {
581 int i;
582
583 unregister_capi_driver(&capi_driver_t1isa);
584 for (i = 0; i < MAX_CARDS; i++) {
585 if (!io[i])
586 break;
587
588 t1isa_remove(&isa_dev[i]);
589 }
590 }
591
592 module_init(t1isa_init);
593 module_exit(t1isa_exit);
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