include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-2.6.git] / 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 <linux/gfp.h>
25 #include <asm/io.h>
26 #include <linux/isdn/capicmd.h>
27 #include <linux/isdn/capiutil.h>
28 #include <linux/isdn/capilli.h>
29 #include "avmcard.h"
30
31 /* ------------------------------------------------------------- */
32
33 static char *revision = "$Revision: 1.1.2.3 $";
34
35 /* ------------------------------------------------------------- */
36
37 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 HEMA ISA card");
38 MODULE_AUTHOR("Carsten Paeth");
39 MODULE_LICENSE("GPL");
40
41 /* ------------------------------------------------------------- */
42
43 static int hema_irq_table[16] =
44 {0,
45  0,
46  0,
47  0x80,                          /* irq 3 */
48  0,
49  0x90,                          /* irq 5 */
50  0,
51  0xA0,                          /* irq 7 */
52  0,
53  0xB0,                          /* irq 9 */
54  0xC0,                          /* irq 10 */
55  0xD0,                          /* irq 11 */
56  0xE0,                          /* irq 12 */
57  0,
58  0,
59  0xF0,                          /* irq 15 */
60 };
61
62 static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr)
63 {
64         unsigned char cregs[8];
65         unsigned char reverse_cardnr;
66         unsigned char dummy;
67         int i;
68
69         reverse_cardnr =   ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1)
70                          | ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3);
71         cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf);
72         cregs[1] = 0x00; /* fast & slow link connected to CON1 */
73         cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */
74         cregs[3] = 0;
75         cregs[4] = 0x11; /* zero wait state */
76         cregs[5] = hema_irq_table[irq & 0xf];
77         cregs[6] = 0;
78         cregs[7] = 0;
79
80         /*
81          * no one else should use the ISA bus in this moment,
82          * but no function there to prevent this :-(
83          * save_flags(flags); cli();
84          */
85
86         /* board reset */
87         t1outp(base, T1_RESETBOARD, 0xf);
88         mdelay(100);
89         dummy = t1inp(base, T1_FASTLINK+T1_OUTSTAT); /* first read */
90
91         /* write config */
92         dummy = (base >> 4) & 0xff;
93         for (i=1;i<=0xf;i++) t1outp(base, i, dummy);
94         t1outp(base, HEMA_PAL_ID & 0xf, dummy);
95         t1outp(base, HEMA_PAL_ID >> 4, cregs[0]);
96         for(i=1;i<7;i++) t1outp(base, 0, cregs[i]);
97         t1outp(base, ((base >> 4)) & 0x3, cregs[7]);
98         /* restore_flags(flags); */
99
100         mdelay(100);
101         t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
102         t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
103         mdelay(10);
104         t1outp(base, T1_FASTLINK+T1_RESETLINK, 1);
105         t1outp(base, T1_SLOWLINK+T1_RESETLINK, 1);
106         mdelay(100);
107         t1outp(base, T1_FASTLINK+T1_RESETLINK, 0);
108         t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0);
109         mdelay(10);
110         t1outp(base, T1_FASTLINK+T1_ANALYSE, 0);
111         mdelay(5);
112         t1outp(base, T1_SLOWLINK+T1_ANALYSE, 0);
113
114         if (t1inp(base, T1_FASTLINK+T1_OUTSTAT) != 0x1) /* tx empty */
115                 return 1;
116         if (t1inp(base, T1_FASTLINK+T1_INSTAT) != 0x0) /* rx empty */
117                 return 2;
118         if (t1inp(base, T1_FASTLINK+T1_IRQENABLE) != 0x0)
119                 return 3;
120         if ((t1inp(base, T1_FASTLINK+T1_FIFOSTAT) & 0xf0) != 0x70)
121                 return 4;
122         if ((t1inp(base, T1_FASTLINK+T1_IRQMASTER) & 0x0e) != 0)
123                 return 5;
124         if ((t1inp(base, T1_FASTLINK+T1_IDENT) & 0x7d) != 1)
125                 return 6;
126         if (t1inp(base, T1_SLOWLINK+T1_OUTSTAT) != 0x1) /* tx empty */
127                 return 7;
128         if ((t1inp(base, T1_SLOWLINK+T1_IRQMASTER) & 0x0e) != 0)
129                 return 8;
130         if ((t1inp(base, T1_SLOWLINK+T1_IDENT) & 0x7d) != 0)
131                 return 9;
132         return 0;
133 }
134
135 static irqreturn_t t1isa_interrupt(int interrupt, void *devptr)
136 {
137         avmcard *card = devptr;
138         avmctrl_info *cinfo = &card->ctrlinfo[0];
139         struct capi_ctr *ctrl = &cinfo->capi_ctrl;
140         unsigned char b1cmd;
141         struct sk_buff *skb;
142
143         unsigned ApplId;
144         unsigned MsgLen;
145         unsigned DataB3Len;
146         unsigned NCCI;
147         unsigned WindowSize;
148         unsigned long flags;
149
150         spin_lock_irqsave(&card->lock, flags);
151
152         while (b1_rx_full(card->port)) {
153
154                 b1cmd = b1_get_byte(card->port);
155
156                 switch (b1cmd) {
157
158                 case RECEIVE_DATA_B3_IND:
159
160                         ApplId = (unsigned) b1_get_word(card->port);
161                         MsgLen = t1_get_slice(card->port, card->msgbuf);
162                         DataB3Len = t1_get_slice(card->port, card->databuf);
163                         spin_unlock_irqrestore(&card->lock, flags);
164
165                         if (MsgLen < 30) { /* not CAPI 64Bit */
166                                 memset(card->msgbuf+MsgLen, 0, 30-MsgLen);
167                                 MsgLen = 30;
168                                 CAPIMSG_SETLEN(card->msgbuf, 30);
169                         }
170                         if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) {
171                                 printk(KERN_ERR "%s: incoming packet dropped\n",
172                                         card->name);
173                         } else {
174                                 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
175                                 memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
176                                 capi_ctr_handle_message(ctrl, ApplId, skb);
177                         }
178                         break;
179
180                 case RECEIVE_MESSAGE:
181
182                         ApplId = (unsigned) b1_get_word(card->port);
183                         MsgLen = t1_get_slice(card->port, card->msgbuf);
184                         if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
185                                 spin_unlock_irqrestore(&card->lock, flags);
186                                 printk(KERN_ERR "%s: incoming packet dropped\n",
187                                                 card->name);
188                         } else {
189                                 memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
190                                 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3)
191                                         capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
192                                                              CAPIMSG_NCCI(skb->data),
193                                                              CAPIMSG_MSGID(skb->data));
194                                 spin_unlock_irqrestore(&card->lock, flags);
195                                 capi_ctr_handle_message(ctrl, ApplId, skb);
196                         }
197                         break;
198
199                 case RECEIVE_NEW_NCCI:
200
201                         ApplId = b1_get_word(card->port);
202                         NCCI = b1_get_word(card->port);
203                         WindowSize = b1_get_word(card->port);
204                         capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize);
205                         spin_unlock_irqrestore(&card->lock, flags);
206                         break;
207
208                 case RECEIVE_FREE_NCCI:
209
210                         ApplId = b1_get_word(card->port);
211                         NCCI = b1_get_word(card->port);
212                         if (NCCI != 0xffffffff)
213                                 capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI);
214                         spin_unlock_irqrestore(&card->lock, flags);
215                         break;
216
217                 case RECEIVE_START:
218                         b1_put_byte(card->port, SEND_POLLACK);
219                         spin_unlock_irqrestore(&card->lock, flags);
220                         capi_ctr_resume_output(ctrl);
221                         break;
222
223                 case RECEIVE_STOP:
224                         spin_unlock_irqrestore(&card->lock, flags);
225                         capi_ctr_suspend_output(ctrl);
226                         break;
227
228                 case RECEIVE_INIT:
229
230                         cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf);
231                         spin_unlock_irqrestore(&card->lock, flags);
232                         b1_parse_version(cinfo);
233                         printk(KERN_INFO "%s: %s-card (%s) now active\n",
234                                card->name,
235                                cinfo->version[VER_CARDTYPE],
236                                cinfo->version[VER_DRIVER]);
237                         capi_ctr_ready(ctrl);
238                         break;
239
240                 case RECEIVE_TASK_READY:
241                         ApplId = (unsigned) b1_get_word(card->port);
242                         MsgLen = t1_get_slice(card->port, card->msgbuf);
243                         spin_unlock_irqrestore(&card->lock, flags);
244                         card->msgbuf[MsgLen] = 0;
245                         while (    MsgLen > 0
246                                && (   card->msgbuf[MsgLen-1] == '\n'
247                                    || card->msgbuf[MsgLen-1] == '\r')) {
248                                 card->msgbuf[MsgLen-1] = 0;
249                                 MsgLen--;
250                         }
251                         printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
252                                         card->name, ApplId, card->msgbuf);
253                         break;
254
255                 case RECEIVE_DEBUGMSG:
256                         MsgLen = t1_get_slice(card->port, card->msgbuf);
257                         spin_unlock_irqrestore(&card->lock, flags);
258                         card->msgbuf[MsgLen] = 0;
259                         while (    MsgLen > 0
260                                && (   card->msgbuf[MsgLen-1] == '\n'
261                                    || card->msgbuf[MsgLen-1] == '\r')) {
262                                 card->msgbuf[MsgLen-1] = 0;
263                                 MsgLen--;
264                         }
265                         printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
266                         break;
267
268
269                 case 0xff:
270                         spin_unlock_irqrestore(&card->lock, flags);
271                         printk(KERN_ERR "%s: card reseted ?\n", card->name);
272                         return IRQ_HANDLED;
273                 default:
274                         spin_unlock_irqrestore(&card->lock, flags);
275                         printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n",
276                                         card->name, b1cmd);
277                         return IRQ_NONE;
278                 }
279         }
280         return IRQ_HANDLED;
281 }
282
283 /* ------------------------------------------------------------- */
284
285 static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
286 {
287         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
288         avmcard *card = cinfo->card;
289         unsigned int port = card->port;
290         unsigned long flags;
291         int retval;
292
293         t1_disable_irq(port);
294         b1_reset(port);
295
296         if ((retval = b1_load_t4file(card, &data->firmware))) {
297                 b1_reset(port);
298                 printk(KERN_ERR "%s: failed to load t4file!!\n",
299                                         card->name);
300                 return retval;
301         }
302
303         if (data->configuration.len > 0 && data->configuration.data) {
304                 if ((retval = b1_load_config(card, &data->configuration))) {
305                         b1_reset(port);
306                         printk(KERN_ERR "%s: failed to load config!!\n",
307                                         card->name);
308                         return retval;
309                 }
310         }
311
312         if (!b1_loaded(card)) {
313                 printk(KERN_ERR "%s: failed to load t4file.\n", card->name);
314                 return -EIO;
315         }
316
317         spin_lock_irqsave(&card->lock, flags);
318         b1_setinterrupt(port, card->irq, card->cardtype);
319         b1_put_byte(port, SEND_INIT);
320         b1_put_word(port, CAPI_MAXAPPL);
321         b1_put_word(port, AVM_NCCI_PER_CHANNEL*30);
322         b1_put_word(port, ctrl->cnr - 1);
323         spin_unlock_irqrestore(&card->lock, flags);
324
325         return 0;
326 }
327
328 static void t1isa_reset_ctr(struct capi_ctr *ctrl)
329 {
330         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
331         avmcard *card = cinfo->card;
332         unsigned int port = card->port;
333         unsigned long flags;
334
335         t1_disable_irq(port);
336         b1_reset(port);
337         b1_reset(port);
338
339         memset(cinfo->version, 0, sizeof(cinfo->version));
340         spin_lock_irqsave(&card->lock, flags);
341         capilib_release(&cinfo->ncci_head);
342         spin_unlock_irqrestore(&card->lock, flags);
343         capi_ctr_down(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.proc_fops = &b1ctl_proc_fops;
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         spin_lock_irqsave(&card->lock, flags);
470         if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
471                 retval = capilib_data_b3_req(&cinfo->ncci_head,
472                                              CAPIMSG_APPID(skb->data),
473                                              CAPIMSG_NCCI(skb->data),
474                                              CAPIMSG_MSGID(skb->data));
475                 if (retval != CAPI_NOERROR) {
476                         spin_unlock_irqrestore(&card->lock, flags);
477                         return retval;
478                 }
479                 dlen = CAPIMSG_DATALEN(skb->data);
480
481                 b1_put_byte(port, SEND_DATA_B3_REQ);
482                 t1_put_slice(port, skb->data, len);
483                 t1_put_slice(port, skb->data + len, dlen);
484         } else {
485                 b1_put_byte(port, SEND_MESSAGE);
486                 t1_put_slice(port, skb->data, len);
487         }
488         spin_unlock_irqrestore(&card->lock, flags);
489         dev_kfree_skb_any(skb);
490         return CAPI_NOERROR;
491 }
492 /* ------------------------------------------------------------- */
493
494 static char *t1isa_procinfo(struct capi_ctr *ctrl)
495 {
496         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
497
498         if (!cinfo)
499                 return "";
500         sprintf(cinfo->infobuf, "%s %s 0x%x %d %d",
501                 cinfo->cardname[0] ? cinfo->cardname : "-",
502                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
503                 cinfo->card ? cinfo->card->port : 0x0,
504                 cinfo->card ? cinfo->card->irq : 0,
505                 cinfo->card ? cinfo->card->cardnr : 0
506                 );
507         return cinfo->infobuf;
508 }
509
510
511 /* ------------------------------------------------------------- */
512
513 #define MAX_CARDS 4
514 static struct pci_dev isa_dev[MAX_CARDS];
515 static int io[MAX_CARDS];
516 static int irq[MAX_CARDS];
517 static int cardnr[MAX_CARDS];
518
519 module_param_array(io, int, NULL, 0);
520 module_param_array(irq, int, NULL, 0);
521 module_param_array(cardnr, int, NULL, 0);
522 MODULE_PARM_DESC(io, "I/O base address(es)");
523 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
524 MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)");
525
526 static int t1isa_add_card(struct capi_driver *driver, capicardparams *data)
527 {
528         int i;
529
530         for (i = 0; i < MAX_CARDS; i++) {
531                 if (isa_dev[i].resource[0].start)
532                         continue;
533
534                 isa_dev[i].resource[0].start = data->port;
535                 isa_dev[i].irq = data->irq;
536
537                 if (t1isa_probe(&isa_dev[i], data->cardnr) == 0)
538                         return 0;
539         }
540         return -ENODEV;
541 }
542
543 static struct capi_driver capi_driver_t1isa = {
544         .name           = "t1isa",
545         .revision       = "1.0",
546         .add_card       = t1isa_add_card,
547 };
548
549 static int __init t1isa_init(void)
550 {
551         char rev[32];
552         char *p;
553         int i;
554
555         if ((p = strchr(revision, ':')) != NULL && p[1]) {
556                 strlcpy(rev, p + 2, 32);
557                 if ((p = strchr(rev, '$')) != NULL && p > rev)
558                    *(p-1) = 0;
559         } else
560                 strcpy(rev, "1.0");
561
562         for (i = 0; i < MAX_CARDS; i++) {
563                 if (!io[i])
564                         break;
565
566                 isa_dev[i].resource[0].start = io[i];
567                 isa_dev[i].irq = irq[i];
568
569                 if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0)
570                         return -ENODEV;
571         }
572
573         strlcpy(capi_driver_t1isa.revision, rev, 32);
574         register_capi_driver(&capi_driver_t1isa);
575         printk(KERN_INFO "t1isa: revision %s\n", rev);
576
577         return 0;
578 }
579
580 static void __exit t1isa_exit(void)
581 {
582         int i;
583
584         unregister_capi_driver(&capi_driver_t1isa);
585         for (i = 0; i < MAX_CARDS; i++) {
586                 if (!io[i])
587                         break;
588
589                 t1isa_remove(&isa_dev[i]);
590         }
591 }
592
593 module_init(t1isa_init);
594 module_exit(t1isa_exit);