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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / isdn / hardware / avm / t1isa.c
blobcb9d9cee2a648f2ef3793102f74363fbbd8fc865
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, struct pt_regs *regs)
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 spin_unlock_irqrestore(&card->lock, flags);
184 if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
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
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 spin_unlock_irqrestore(&card->lock, flags);
204
205 capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
206
207 break;
208
209 case RECEIVE_FREE_NCCI:
210
211 ApplId = b1_get_word(card->port);
212 NCCI = b1_get_word(card->port);
213 spin_unlock_irqrestore(&card->lock, flags);
214
215 if (NCCI != 0xffffffff)
216 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
217
218 break;
219
220 case RECEIVE_START:
221 b1_put_byte(card->port, SEND_POLLACK);
222 spin_unlock_irqrestore(&card->lock, flags);
223 capi_ctr_resume_output(ctrl);
224 break;
225
226 case RECEIVE_STOP:
227 spin_unlock_irqrestore(&card->lock, flags);
228 capi_ctr_suspend_output(ctrl);
229 break;
230
231 case RECEIVE_INIT:
232
233 cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
234 spin_unlock_irqrestore(&card->lock, flags);
235 b1_parse_version(cinfo);
236 printk(KERN_INFO "%s: %s-card (%s) now active\n",
237 card->name,
238 cinfo->version[VER_CARDTYPE],
239 cinfo->version[VER_DRIVER]);
240 capi_ctr_ready(ctrl);
241 break;
242
243 case RECEIVE_TASK_READY:
244 ApplId = (unsigned) b1_get_word(card->port);
245 MsgLen = t1_get_slice(card->port, card->msgbuf);
246 spin_unlock_irqrestore(&card->lock, flags);
247 card->msgbuf[MsgLen] = 0;
248 while ( MsgLen > 0
249 && ( card->msgbuf[MsgLen-1] == '\n'
250 || card->msgbuf[MsgLen-1] == '\r')) {
251 card->msgbuf[MsgLen-1] = 0;
252 MsgLen--;
253 }
254 printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
255 card->name, ApplId, card->msgbuf);
256 break;
257
258 case RECEIVE_DEBUGMSG:
259 MsgLen = t1_get_slice(card->port, card->msgbuf);
260 spin_unlock_irqrestore(&card->lock, flags);
261 card->msgbuf[MsgLen] = 0;
262 while ( MsgLen > 0
263 && ( card->msgbuf[MsgLen-1] == '\n'
264 || card->msgbuf[MsgLen-1] == '\r')) {
265 card->msgbuf[MsgLen-1] = 0;
266 MsgLen--;
267 }
268 printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
269 break;
270
271
272 case 0xff:
273 spin_unlock_irqrestore(&card->lock, flags);
274 printk(KERN_ERR "%s: card reseted ?\n", card->name);
275 return IRQ_HANDLED;
276 default:
277 spin_unlock_irqrestore(&card->lock, flags);
278 printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
279 card->name, b1cmd);
280 return IRQ_NONE;
281 }
282 }
283 return IRQ_HANDLED;
284 }
285
286 /* ------------------------------------------------------------- */
287
288 static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
289 {
290 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
291 avmcard *card = cinfo->card;
292 unsigned int port = card->port;
293 unsigned long flags;
294 int retval;
295
296 t1_disable_irq(port);
297 b1_reset(port);
298
299 if ((retval = b1_load_t4file(card, &data->firmware))) {
300 b1_reset(port);
301 printk(KERN_ERR "%s: failed to load t4file!!\n",
302 card->name);
303 return retval;
304 }
305
306 if (data->configuration.len > 0 && data->configuration.data) {
307 if ((retval = b1_load_config(card, &data->configuration))) {
308 b1_reset(port);
309 printk(KERN_ERR "%s: failed to load config!!\n",
310 card->name);
311 return retval;
312 }
313 }
314
315 if (!b1_loaded(card)) {
316 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
317 return -EIO;
318 }
319
320 spin_lock_irqsave(&card->lock, flags);
321 b1_setinterrupt(port, card->irq, card->cardtype);
322 b1_put_byte(port, SEND_INIT);
323 b1_put_word(port, CAPI_MAXAPPL);
324 b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
325 b1_put_word(port, ctrl->cnr - 1);
326 spin_unlock_irqrestore(&card->lock, flags);
327
328 return 0;
329 }
330
331 void t1isa_reset_ctr(struct capi_ctr *ctrl)
332 {
333 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
334 avmcard *card = cinfo->card;
335 unsigned int port = card->port;
336
337 t1_disable_irq(port);
338 b1_reset(port);
339 b1_reset(port);
340
341 memset(cinfo->version, 0, sizeof(cinfo->version));
342 capilib_release(&cinfo->ncci_head);
343 capi_ctr_reseted(ctrl);
344 }
345
346 static void t1isa_remove(struct pci_dev *pdev)
347 {
348 avmctrl_info *cinfo = pci_get_drvdata(pdev);
349 avmcard *card;
350
351 if (!cinfo)
352 return;
353
354 card = cinfo->card;
355
356 t1_disable_irq(card->port);
357 b1_reset(card->port);
358 b1_reset(card->port);
359 t1_reset(card->port);
360
361 detach_capi_ctr(&cinfo->capi_ctrl);
362 free_irq(card->irq, card);
363 release_region(card->port, AVMB1_PORTLEN);
364 b1_free_card(card);
365 }
366
367 /* ------------------------------------------------------------- */
368
369 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
370 static char *t1isa_procinfo(struct capi_ctr *ctrl);
371
372 static int t1isa_probe(struct pci_dev *pdev, int cardnr)
373 {
374 avmctrl_info *cinfo;
375 avmcard *card;
376 int retval;
377
378 card = b1_alloc_card(1);
379 if (!card) {
380 printk(KERN_WARNING "t1isa: no memory.\n");
381 retval = -ENOMEM;
382 goto err;
383 }
384
385 cinfo = card->ctrlinfo;
386 card->port = pci_resource_start(pdev, 0);
387 card->irq = pdev->irq;
388 card->cardtype = avm_t1isa;
389 card->cardnr = cardnr;
390 sprintf(card->name, "t1isa-%x", card->port);
391
392 if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) {
393 printk(KERN_WARNING "t1isa: invalid port 0x%x.\n", card->port);
394 retval = -EINVAL;
395 goto err_free;
396 }
397 if (hema_irq_table[card->irq & 0xf] == 0) {
398 printk(KERN_WARNING "t1isa: irq %d not valid.\n", card->irq);
399 retval = -EINVAL;
400 goto err_free;
401 }
402 if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
403 printk(KERN_INFO "t1isa: ports 0x%03x-0x%03x in use.\n",
404 card->port, card->port + AVMB1_PORTLEN);
405 retval = -EBUSY;
406 goto err_free;
407 }
408 retval = request_irq(card->irq, t1isa_interrupt, 0, card->name, card);
409 if (retval) {
410 printk(KERN_INFO "t1isa: unable to get IRQ %d.\n", card->irq);
411 retval = -EBUSY;
412 goto err_release_region;
413 }
414
415 if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 0) {
416 printk(KERN_INFO "t1isa: NO card at 0x%x (%d)\n",
417 card->port, retval);
418 retval = -ENODEV;
419 goto err_free_irq;
420 }
421 t1_disable_irq(card->port);
422 b1_reset(card->port);
423
424 cinfo->capi_ctrl.owner = THIS_MODULE;
425 cinfo->capi_ctrl.driver_name = "t1isa";
426 cinfo->capi_ctrl.driverdata = cinfo;
427 cinfo->capi_ctrl.register_appl = b1_register_appl;
428 cinfo->capi_ctrl.release_appl = b1_release_appl;
429 cinfo->capi_ctrl.send_message = t1isa_send_message;
430 cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
431 cinfo->capi_ctrl.reset_ctr = t1isa_reset_ctr;
432 cinfo->capi_ctrl.procinfo = t1isa_procinfo;
433 cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
434 strcpy(cinfo->capi_ctrl.name, card->name);
435
436 retval = attach_capi_ctr(&cinfo->capi_ctrl);
437 if (retval) {
438 printk(KERN_INFO "t1isa: attach controller failed.\n");
439 goto err_free_irq;
440 }
441
442 printk(KERN_INFO "t1isa: AVM T1 ISA at i/o %#x, irq %d, card %d\n",
443 card->port, card->irq, card->cardnr);
444
445 pci_set_drvdata(pdev, cinfo);
446 return 0;
447
448 err_free_irq:
449 free_irq(card->irq, card);
450 err_release_region:
451 release_region(card->port, AVMB1_PORTLEN);
452 err_free:
453 b1_free_card(card);
454 err:
455 return retval;
456 }
457
458 static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
459 {
460 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
461 avmcard *card = cinfo->card;
462 unsigned int port = card->port;
463 unsigned long flags;
464 u16 len = CAPIMSG_LEN(skb->data);
465 u8 cmd = CAPIMSG_COMMAND(skb->data);
466 u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data);
467 u16 dlen, retval;
468
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 return retval;
476
477 dlen = CAPIMSG_DATALEN(skb->data);
478
479 spin_lock_irqsave(&card->lock, flags);
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 spin_unlock_irqrestore(&card->lock, flags);
484 } else {
485
486 spin_lock_irqsave(&card->lock, flags);
487 b1_put_byte(port, SEND_MESSAGE);
488 t1_put_slice(port, skb->data, len);
489 spin_unlock_irqrestore(&card->lock, flags);
490 }
491
492 dev_kfree_skb_any(skb);
493 return CAPI_NOERROR;
494 }
495 /* ------------------------------------------------------------- */
496
497 static char *t1isa_procinfo(struct capi_ctr *ctrl)
498 {
499 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
500
501 if (!cinfo)
502 return "";
503 sprintf(cinfo->infobuf, "%s %s 0x%x %d %d",
504 cinfo->cardname[0] ? cinfo->cardname : "-",
505 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
506 cinfo->card ? cinfo->card->port : 0x0,
507 cinfo->card ? cinfo->card->irq : 0,
508 cinfo->card ? cinfo->card->cardnr : 0
509 );
510 return cinfo->infobuf;
511 }
512
513
514 /* ------------------------------------------------------------- */
515
516 #define MAX_CARDS 4
517 static struct pci_dev isa_dev[MAX_CARDS];
518 static int io[MAX_CARDS];
519 static int irq[MAX_CARDS];
520 static int cardnr[MAX_CARDS];
521
522 MODULE_PARM(io, "1-" __MODULE_STRING(MAX_CARDS) "i");
523 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_CARDS) "i");
524 MODULE_PARM(cardnr, "1-" __MODULE_STRING(MAX_CARDS) "i");
525 MODULE_PARM_DESC(io, "I/O base address(es)");
526 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
527 MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)");
528
529 static int t1isa_add_card(struct capi_driver *driver, capicardparams *data)
530 {
531 int i;
532
533 for (i = 0; i < MAX_CARDS; i++) {
534 if (isa_dev[i].resource[0].start)
535 continue;
536
537 isa_dev[i].resource[0].start = data->port;
538 isa_dev[i].irq = data->irq;
539
540 if (t1isa_probe(&isa_dev[i], data->cardnr) == 0)
541 return 0;
542 }
543 return -ENODEV;
544 }
545
546 static struct capi_driver capi_driver_t1isa = {
547 .name = "t1isa",
548 .revision = "1.0",
549 .add_card = t1isa_add_card,
550 };
551
552 static int __init t1isa_init(void)
553 {
554 char rev[32];
555 char *p;
556 int i;
557
558 if ((p = strchr(revision, ':')) != 0 && p[1]) {
559 strlcpy(rev, p + 2, 32);
560 if ((p = strchr(rev, '$')) != 0 && p > rev)
561 *(p-1) = 0;
562 } else
563 strcpy(rev, "1.0");
564
565 for (i = 0; i < MAX_CARDS; i++) {
566 if (!io[i])
567 break;
568
569 isa_dev[i].resource[0].start = io[i];
570 isa_dev[i].irq = irq[i];
571
572 if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0)
573 return -ENODEV;
574 }
575
576 strlcpy(capi_driver_t1isa.revision, rev, 32);
577 register_capi_driver(&capi_driver_t1isa);
578 printk(KERN_INFO "t1isa: revision %s\n", rev);
579
580 return 0;
581 }
582
583 static void __exit t1isa_exit(void)
584 {
585 int i;
586
587 for (i = 0; i < MAX_CARDS; i++) {
588 if (!io[i])
589 break;
590
591 t1isa_remove(&isa_dev[i]);
592 }
593 }
594
595 module_init(t1isa_init);
596 module_exit(t1isa_exit);
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