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6
7#include <linux/module.h>
8#include <linux/init.h>
9#include <linux/interrupt.h>
10#include <linux/delay.h>
11#include <linux/sched.h>
12#include "includes.h"
13#include "hardware.h"
14#include "card.h"
15
16MODULE_DESCRIPTION("ISDN4Linux: Driver for Spellcaster card");
17MODULE_AUTHOR("Spellcaster Telecommunications Inc.");
18MODULE_LICENSE("GPL");
19
20board *sc_adapter[MAX_CARDS];
21int cinst;
22
23static char devname[] = "scX";
24static const char version[] = "2.0b1";
25
26static const char *boardname[] = { "DataCommute/BRI", "DataCommute/PRI", "TeleCommute/BRI" };
27
28
29static unsigned int io[] = {0,0,0,0};
30static unsigned char irq[] = {0,0,0,0};
31static unsigned long ram[] = {0,0,0,0};
32static int do_reset = 0;
33
34module_param_array(io, int, NULL, 0);
35module_param_array(irq, int, NULL, 0);
36module_param_array(ram, int, NULL, 0);
37module_param(do_reset, bool, 0);
38
39static int identify_board(unsigned long, unsigned int);
40
41static int __init sc_init(void)
42{
43 int b = -1;
44 int i, j;
45 int status = -ENODEV;
46
47 unsigned long memsize = 0;
48 unsigned long features = 0;
49 isdn_if *interface;
50 unsigned char channels;
51 unsigned char pgport;
52 unsigned long magic;
53 int model;
54 int last_base = IOBASE_MIN;
55 int probe_exhasted = 0;
56
57#ifdef MODULE
58 pr_info("SpellCaster ISA ISDN Adapter Driver rev. %s Loaded\n", version);
59#else
60 pr_info("SpellCaster ISA ISDN Adapter Driver rev. %s\n", version);
61#endif
62 pr_info("Copyright (C) 1996 SpellCaster Telecommunications Inc.\n");
63
64 while(b++ < MAX_CARDS - 1) {
65 pr_debug("Probing for adapter #%d\n", b);
66
67
68
69 model = -1;
70 magic = 0;
71 channels = 0;
72 pgport = 0;
73
74
75
76
77 pr_debug("I/O Base for board %d is 0x%x, %s probe\n", b, io[b],
78 io[b] == 0 ? "will" : "won't");
79 if(io[b]) {
80
81
82
83 for (i = 0 ; i < MAX_IO_REGS - 1 ; i++) {
84 if(!request_region(io[b] + i * 0x400, 1, "sc test")) {
85 pr_debug("request_region for 0x%x failed\n", io[b] + i * 0x400);
86 io[b] = 0;
87 break;
88 } else
89 release_region(io[b] + i * 0x400, 1);
90 }
91
92
93
94
95 if(io[b] == 0) {
96 pr_debug("I/O Address invalid.\n");
97 continue;
98 }
99
100 outb(0x18, io[b] + 0x400 * EXP_PAGE0);
101 if(inb(io[b] + 0x400 * EXP_PAGE0) != 0x18) {
102 pr_debug("I/O Base 0x%x fails test\n",
103 io[b] + 0x400 * EXP_PAGE0);
104 continue;
105 }
106 }
107 else {
108
109
110
111 if(probe_exhasted) {
112 pr_debug("All probe addresses exhasted, skipping\n");
113 continue;
114 }
115 pr_debug("Probing for I/O...\n");
116 for (i = last_base ; i <= IOBASE_MAX ; i += IOBASE_OFFSET) {
117 int found_io = 1;
118 if (i == IOBASE_MAX) {
119 probe_exhasted = 1;
120 pr_debug("End of Probes\n");
121 }
122 last_base = i + IOBASE_OFFSET;
123 pr_debug(" checking 0x%x...", i);
124 for ( j = 0 ; j < MAX_IO_REGS - 1 ; j++) {
125 if(!request_region(i + j * 0x400, 1, "sc test")) {
126 pr_debug("Failed\n");
127 found_io = 0;
128 break;
129 } else
130 release_region(i + j * 0x400, 1);
131 }
132
133 if(found_io) {
134 io[b] = i;
135 outb(0x18, io[b] + 0x400 * EXP_PAGE0);
136 if(inb(io[b] + 0x400 * EXP_PAGE0) != 0x18) {
137 pr_debug("Failed by test\n");
138 continue;
139 }
140 pr_debug("Passed\n");
141 break;
142 }
143 }
144 if(probe_exhasted) {
145 continue;
146 }
147 }
148
149
150
151
152 if(do_reset) {
153 pr_debug("Doing a SAFE probe reset\n");
154 outb(0xFF, io[b] + RESET_OFFSET);
155 msleep_interruptible(10000);
156 }
157 pr_debug("RAM Base for board %d is 0x%lx, %s probe\n", b,
158 ram[b], ram[b] == 0 ? "will" : "won't");
159
160 if(ram[b]) {
161
162
163
164
165
166 if(request_region(ram[b], SRAM_PAGESIZE, "sc test")) {
167 pr_debug("request_region for RAM base 0x%lx succeeded\n", ram[b]);
168 model = identify_board(ram[b], io[b]);
169 release_region(ram[b], SRAM_PAGESIZE);
170 }
171 }
172 else {
173
174
175
176
177 for (i = SRAM_MIN ; i < SRAM_MAX ; i += SRAM_PAGESIZE) {
178 pr_debug("Checking RAM address 0x%x...\n", i);
179 if(request_region(i, SRAM_PAGESIZE, "sc test")) {
180 pr_debug(" request_region succeeded\n");
181 model = identify_board(i, io[b]);
182 release_region(i, SRAM_PAGESIZE);
183 if (model >= 0) {
184 pr_debug(" Identified a %s\n",
185 boardname[model]);
186 ram[b] = i;
187 break;
188 }
189 pr_debug(" Unidentifed or inaccessible\n");
190 continue;
191 }
192 pr_debug(" request failed\n");
193 }
194 }
195
196
197
198 if(!ram[b] || model < 0) {
199
200
201
202
203 pr_debug("Failed to find an adapter at 0x%lx\n", ram[b]);
204 continue;
205 }
206
207
208
209
210 switch(model) {
211 case PRI_BOARD:
212 channels = 23;
213 magic = 0x20000;
214 memsize = 0x100000;
215 features = PRI_FEATURES;
216 break;
217
218 case BRI_BOARD:
219 case POTS_BOARD:
220 channels = 2;
221 magic = 0x60000;
222 memsize = 0x10000;
223 features = BRI_FEATURES;
224 break;
225 }
226 switch(ram[b] >> 12 & 0x0F) {
227 case 0x0:
228 pr_debug("RAM Page register set to EXP_PAGE0\n");
229 pgport = EXP_PAGE0;
230 break;
231
232 case 0x4:
233 pr_debug("RAM Page register set to EXP_PAGE1\n");
234 pgport = EXP_PAGE1;
235 break;
236
237 case 0x8:
238 pr_debug("RAM Page register set to EXP_PAGE2\n");
239 pgport = EXP_PAGE2;
240 break;
241
242 case 0xC:
243 pr_debug("RAM Page register set to EXP_PAGE3\n");
244 pgport = EXP_PAGE3;
245 break;
246
247 default:
248 pr_debug("RAM base address doesn't fall on 16K boundary\n");
249 continue;
250 }
251
252 pr_debug("current IRQ: %d b: %d\n",irq[b],b);
253
254
255
256
257 if(!irq[b]) {
258
259
260
261 pr_debug("Failed to acquire an IRQ line\n");
262 continue;
263 }
264
265
266
267
268
269 interface = kzalloc(sizeof(isdn_if), GFP_KERNEL);
270 if (interface == NULL) {
271
272
273
274 continue;
275 }
276
277 interface->owner = THIS_MODULE;
278 interface->hl_hdrlen = 0;
279 interface->channels = channels;
280 interface->maxbufsize = BUFFER_SIZE;
281 interface->features = features;
282 interface->writebuf_skb = sndpkt;
283 interface->writecmd = NULL;
284 interface->command = command;
285 strcpy(interface->id, devname);
286 interface->id[2] = '0' + cinst;
287
288
289
290
291 sc_adapter[cinst] = kzalloc(sizeof(board), GFP_KERNEL);
292 if (sc_adapter[cinst] == NULL) {
293
294
295
296 kfree(interface);
297 continue;
298 }
299 spin_lock_init(&sc_adapter[cinst]->lock);
300
301 if(!register_isdn(interface)) {
302
303
304
305 kfree(interface);
306 kfree(sc_adapter[cinst]);
307 continue;
308 }
309
310 sc_adapter[cinst]->card = interface;
311 sc_adapter[cinst]->driverId = interface->channels;
312 strcpy(sc_adapter[cinst]->devicename, interface->id);
313 sc_adapter[cinst]->nChannels = channels;
314 sc_adapter[cinst]->ramsize = memsize;
315 sc_adapter[cinst]->shmem_magic = magic;
316 sc_adapter[cinst]->shmem_pgport = pgport;
317 sc_adapter[cinst]->StartOnReset = 1;
318
319
320
321
322 sc_adapter[cinst]->channel = kzalloc(sizeof(bchan) * channels, GFP_KERNEL);
323 if (sc_adapter[cinst]->channel == NULL) {
324
325
326
327 indicate_status(cinst, ISDN_STAT_UNLOAD, 0, NULL);
328 kfree(interface);
329 kfree(sc_adapter[cinst]);
330 continue;
331 }
332
333
334
335
336 sc_adapter[cinst]->interrupt = irq[b];
337 if (request_irq(sc_adapter[cinst]->interrupt, interrupt_handler,
338 IRQF_DISABLED, interface->id,
339 (void *)(unsigned long) cinst))
340 {
341 kfree(sc_adapter[cinst]->channel);
342 indicate_status(cinst, ISDN_STAT_UNLOAD, 0, NULL);
343 kfree(interface);
344 kfree(sc_adapter[cinst]);
345 continue;
346
347 }
348 sc_adapter[cinst]->iobase = io[b];
349 for(i = 0 ; i < MAX_IO_REGS - 1 ; i++) {
350 sc_adapter[cinst]->ioport[i] = io[b] + i * 0x400;
351 request_region(sc_adapter[cinst]->ioport[i], 1,
352 interface->id);
353 pr_debug("Requesting I/O Port %#x\n",
354 sc_adapter[cinst]->ioport[i]);
355 }
356 sc_adapter[cinst]->ioport[IRQ_SELECT] = io[b] + 0x2;
357 request_region(sc_adapter[cinst]->ioport[IRQ_SELECT], 1,
358 interface->id);
359 pr_debug("Requesting I/O Port %#x\n",
360 sc_adapter[cinst]->ioport[IRQ_SELECT]);
361 sc_adapter[cinst]->rambase = ram[b];
362 request_region(sc_adapter[cinst]->rambase, SRAM_PAGESIZE,
363 interface->id);
364
365 pr_info(" %s (%d) - %s %d channels IRQ %d, I/O Base 0x%x, RAM Base 0x%lx\n",
366 sc_adapter[cinst]->devicename,
367 sc_adapter[cinst]->driverId,
368 boardname[model], channels, irq[b], io[b], ram[b]);
369
370
371
372
373 reset(cinst);
374
375 cinst++;
376 status = 0;
377 }
378 if (status)
379 pr_info("Failed to find any adapters, driver unloaded\n");
380 return status;
381}
382
383static void __exit sc_exit(void)
384{
385 int i, j;
386
387 for(i = 0 ; i < cinst ; i++) {
388 pr_debug("Cleaning up after adapter %d\n", i);
389
390
391
392 del_timer(&(sc_adapter[i]->reset_timer));
393 del_timer(&(sc_adapter[i]->stat_timer));
394
395
396
397
398 indicate_status(i, ISDN_STAT_STOP, 0, NULL);
399 indicate_status(i, ISDN_STAT_UNLOAD, 0, NULL);
400
401
402
403
404 release_region(sc_adapter[i]->rambase, SRAM_PAGESIZE);
405
406
407
408
409 free_irq(sc_adapter[i]->interrupt, NULL);
410
411
412
413
414 outb(0xFF, sc_adapter[i]->ioport[SFT_RESET]);
415
416
417
418
419 for(j = 0 ; j < MAX_IO_REGS - 1; j++) {
420 release_region(sc_adapter[i]->ioport[j], 1);
421 pr_debug("Releasing I/O Port %#x\n",
422 sc_adapter[i]->ioport[j]);
423 }
424 release_region(sc_adapter[i]->ioport[IRQ_SELECT], 1);
425 pr_debug("Releasing I/O Port %#x\n",
426 sc_adapter[i]->ioport[IRQ_SELECT]);
427
428
429
430
431 kfree(sc_adapter[i]->channel);
432 kfree(sc_adapter[i]->card);
433 kfree(sc_adapter[i]);
434 }
435 pr_info("SpellCaster ISA ISDN Adapter Driver Unloaded.\n");
436}
437
438static int identify_board(unsigned long rambase, unsigned int iobase)
439{
440 unsigned int pgport;
441 unsigned long sig;
442 DualPortMemory *dpm;
443 RspMessage rcvmsg;
444 ReqMessage sndmsg;
445 HWConfig_pl hwci;
446 int x;
447
448 pr_debug("Attempting to identify adapter @ 0x%lx io 0x%x\n",
449 rambase, iobase);
450
451
452
453
454 outb(rambase >> 12, iobase + 0x2c00);
455
456 switch(rambase >> 12 & 0x0F) {
457 case 0x0:
458 pgport = iobase + PG0_OFFSET;
459 pr_debug("Page Register offset is 0x%x\n", PG0_OFFSET);
460 break;
461
462 case 0x4:
463 pgport = iobase + PG1_OFFSET;
464 pr_debug("Page Register offset is 0x%x\n", PG1_OFFSET);
465 break;
466
467 case 0x8:
468 pgport = iobase + PG2_OFFSET;
469 pr_debug("Page Register offset is 0x%x\n", PG2_OFFSET);
470 break;
471
472 case 0xC:
473 pgport = iobase + PG3_OFFSET;
474 pr_debug("Page Register offset is 0x%x\n", PG3_OFFSET);
475 break;
476 default:
477 pr_debug("Invalid rambase 0x%lx\n", rambase);
478 return -1;
479 }
480
481
482
483
484 outb(PRI_BASEPG_VAL, pgport);
485 msleep_interruptible(1000);
486 sig = readl(rambase + SIG_OFFSET);
487 pr_debug("Looking for a signature, got 0x%lx\n", sig);
488 if(sig == SIGNATURE)
489 return PRI_BOARD;
490
491
492
493
494 outb(BRI_BASEPG_VAL, pgport);
495 msleep_interruptible(1000);
496 sig = readl(rambase + SIG_OFFSET);
497 pr_debug("Looking for a signature, got 0x%lx\n", sig);
498 if(sig == SIGNATURE)
499 return BRI_BOARD;
500
501 return -1;
502
503
504
505
506 sig = readl(rambase + SIG_OFFSET);
507 pr_debug("Looking for a signature, got 0x%lx\n", sig);
508 if(sig != SIGNATURE)
509 return -1;
510
511 dpm = (DualPortMemory *) rambase;
512
513 memset(&sndmsg, 0, MSG_LEN);
514 sndmsg.msg_byte_cnt = 3;
515 sndmsg.type = cmReqType1;
516 sndmsg.class = cmReqClass0;
517 sndmsg.code = cmReqHWConfig;
518 memcpy_toio(&(dpm->req_queue[dpm->req_head++]), &sndmsg, MSG_LEN);
519 outb(0, iobase + 0x400);
520 pr_debug("Sent HWConfig message\n");
521
522
523
524 x = 0;
525 while((inb(iobase + FIFOSTAT_OFFSET) & RF_HAS_DATA) && x < 100) {
526 schedule_timeout_interruptible(1);
527 x++;
528 }
529 if(x == 100) {
530 pr_debug("Timeout waiting for response\n");
531 return -1;
532 }
533
534 memcpy_fromio(&rcvmsg, &(dpm->rsp_queue[dpm->rsp_tail]), MSG_LEN);
535 pr_debug("Got HWConfig response, status = 0x%x\n", rcvmsg.rsp_status);
536 memcpy(&hwci, &(rcvmsg.msg_data.HWCresponse), sizeof(HWConfig_pl));
537 pr_debug("Hardware Config: Interface: %s, RAM Size: %ld, Serial: %s\n"
538 " Part: %s, Rev: %s\n",
539 hwci.st_u_sense ? "S/T" : "U", hwci.ram_size,
540 hwci.serial_no, hwci.part_no, hwci.rev_no);
541
542 if(!strncmp(PRI_PARTNO, hwci.part_no, 6))
543 return PRI_BOARD;
544 if(!strncmp(BRI_PARTNO, hwci.part_no, 6))
545 return BRI_BOARD;
546
547 return -1;
548}
549
550module_init(sc_init);
551module_exit(sc_exit);
552
