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[linux-2.6] / drivers / isdn / hardware / avm / t1isa.c
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 static 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);