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Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / drivers / isdn / hisax / gazel.c
blob353982fc1436250daae3b7109a3e72e7fd84f515
1 /* $Id: gazel.c,v 2.19.2.4 2004/01/14 16:04:48 keil Exp $
2 *
3 * low level stuff for Gazel isdn cards
4 *
5 * Author BeWan Systems
6 * based on source code from Karsten Keil
7 * Copyright by BeWan Systems
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 *
12 */
13
14 #include <linux/init.h>
15 #include "hisax.h"
16 #include "isac.h"
17 #include "hscx.h"
18 #include "isdnl1.h"
19 #include "ipac.h"
20 #include <linux/pci.h>
21
22 static const char *gazel_revision = "$Revision: 2.19.2.4 $";
23
24 #define R647 1
25 #define R685 2
26 #define R753 3
27 #define R742 4
28
29 #define PLX_CNTRL 0x50 /* registre de controle PLX */
30 #define RESET_GAZEL 0x4
31 #define RESET_9050 0x40000000
32 #define PLX_INCSR 0x4C /* registre d'IT du 9050 */
33 #define INT_ISAC_EN 0x8 /* 1 = enable IT isac */
34 #define INT_ISAC 0x20 /* 1 = IT isac en cours */
35 #define INT_HSCX_EN 0x1 /* 1 = enable IT hscx */
36 #define INT_HSCX 0x4 /* 1 = IT hscx en cours */
37 #define INT_PCI_EN 0x40 /* 1 = enable IT PCI */
38 #define INT_IPAC_EN 0x3 /* enable IT ipac */
39
40
41 #define byteout(addr,val) outb(val,addr)
42 #define bytein(addr) inb(addr)
43
44 static inline u_char
45 readreg(unsigned int adr, u_short off)
46 {
47 return bytein(adr + off);
48 }
49
50 static inline void
51 writereg(unsigned int adr, u_short off, u_char data)
52 {
53 byteout(adr + off, data);
54 }
55
56
57 static inline void
58 read_fifo(unsigned int adr, u_char * data, int size)
59 {
60 insb(adr, data, size);
61 }
62
63 static void
64 write_fifo(unsigned int adr, u_char * data, int size)
65 {
66 outsb(adr, data, size);
67 }
68
69 static inline u_char
70 readreg_ipac(unsigned int adr, u_short off)
71 {
72 register u_char ret;
73
74 byteout(adr, off);
75 ret = bytein(adr + 4);
76 return ret;
77 }
78
79 static inline void
80 writereg_ipac(unsigned int adr, u_short off, u_char data)
81 {
82 byteout(adr, off);
83 byteout(adr + 4, data);
84 }
85
86
87 static inline void
88 read_fifo_ipac(unsigned int adr, u_short off, u_char * data, int size)
89 {
90 byteout(adr, off);
91 insb(adr + 4, data, size);
92 }
93
94 static void
95 write_fifo_ipac(unsigned int adr, u_short off, u_char * data, int size)
96 {
97 byteout(adr, off);
98 outsb(adr + 4, data, size);
99 }
100
101 /* Interface functions */
102
103 static u_char
104 ReadISAC(struct IsdnCardState *cs, u_char offset)
105 {
106 u_short off2 = offset;
107
108 switch (cs->subtyp) {
109 case R647:
110 off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
111 case R685:
112 return (readreg(cs->hw.gazel.isac, off2));
113 case R753:
114 case R742:
115 return (readreg_ipac(cs->hw.gazel.ipac, 0x80 + off2));
116 }
117 return 0;
118 }
119
120 static void
121 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
122 {
123 u_short off2 = offset;
124
125 switch (cs->subtyp) {
126 case R647:
127 off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
128 case R685:
129 writereg(cs->hw.gazel.isac, off2, value);
130 break;
131 case R753:
132 case R742:
133 writereg_ipac(cs->hw.gazel.ipac, 0x80 + off2, value);
134 break;
135 }
136 }
137
138 static void
139 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
140 {
141 switch (cs->subtyp) {
142 case R647:
143 case R685:
144 read_fifo(cs->hw.gazel.isacfifo, data, size);
145 break;
146 case R753:
147 case R742:
148 read_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
149 break;
150 }
151 }
152
153 static void
154 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
155 {
156 switch (cs->subtyp) {
157 case R647:
158 case R685:
159 write_fifo(cs->hw.gazel.isacfifo, data, size);
160 break;
161 case R753:
162 case R742:
163 write_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
164 break;
165 }
166 }
167
168 static void
169 ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
170 {
171 switch (cs->subtyp) {
172 case R647:
173 case R685:
174 read_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
175 break;
176 case R753:
177 case R742:
178 read_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
179 break;
180 }
181 }
182
183 static void
184 WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
185 {
186 switch (cs->subtyp) {
187 case R647:
188 case R685:
189 write_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
190 break;
191 case R753:
192 case R742:
193 write_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
194 break;
195 }
196 }
197
198 static u_char
199 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
200 {
201 u_short off2 = offset;
202
203 switch (cs->subtyp) {
204 case R647:
205 off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
206 case R685:
207 return (readreg(cs->hw.gazel.hscx[hscx], off2));
208 case R753:
209 case R742:
210 return (readreg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2));
211 }
212 return 0;
213 }
214
215 static void
216 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
217 {
218 u_short off2 = offset;
219
220 switch (cs->subtyp) {
221 case R647:
222 off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
223 case R685:
224 writereg(cs->hw.gazel.hscx[hscx], off2, value);
225 break;
226 case R753:
227 case R742:
228 writereg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2, value);
229 break;
230 }
231 }
232
233 /*
234 * fast interrupt HSCX stuff goes here
235 */
236
237 #define READHSCX(cs, nr, reg) ReadHSCX(cs, nr, reg)
238 #define WRITEHSCX(cs, nr, reg, data) WriteHSCX(cs, nr, reg, data)
239 #define READHSCXFIFO(cs, nr, ptr, cnt) ReadHSCXfifo(cs, nr, ptr, cnt)
240 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) WriteHSCXfifo(cs, nr, ptr, cnt)
241
242 #include "hscx_irq.c"
243
244 static irqreturn_t
245 gazel_interrupt(int intno, void *dev_id)
246 {
247 #define MAXCOUNT 5
248 struct IsdnCardState *cs = dev_id;
249 u_char valisac, valhscx;
250 int count = 0;
251 u_long flags;
252
253 spin_lock_irqsave(&cs->lock, flags);
254 do {
255 valhscx = ReadHSCX(cs, 1, HSCX_ISTA);
256 if (valhscx)
257 hscx_int_main(cs, valhscx);
258 valisac = ReadISAC(cs, ISAC_ISTA);
259 if (valisac)
260 isac_interrupt(cs, valisac);
261 count++;
262 } while ((valhscx || valisac) && (count < MAXCOUNT));
263
264 WriteHSCX(cs, 0, HSCX_MASK, 0xFF);
265 WriteHSCX(cs, 1, HSCX_MASK, 0xFF);
266 WriteISAC(cs, ISAC_MASK, 0xFF);
267 WriteISAC(cs, ISAC_MASK, 0x0);
268 WriteHSCX(cs, 0, HSCX_MASK, 0x0);
269 WriteHSCX(cs, 1, HSCX_MASK, 0x0);
270 spin_unlock_irqrestore(&cs->lock, flags);
271 return IRQ_HANDLED;
272 }
273
274
275 static irqreturn_t
276 gazel_interrupt_ipac(int intno, void *dev_id)
277 {
278 struct IsdnCardState *cs = dev_id;
279 u_char ista, val;
280 int count = 0;
281 u_long flags;
282
283 spin_lock_irqsave(&cs->lock, flags);
284 ista = ReadISAC(cs, IPAC_ISTA - 0x80);
285 do {
286 if (ista & 0x0f) {
287 val = ReadHSCX(cs, 1, HSCX_ISTA);
288 if (ista & 0x01)
289 val |= 0x01;
290 if (ista & 0x04)
291 val |= 0x02;
292 if (ista & 0x08)
293 val |= 0x04;
294 if (val) {
295 hscx_int_main(cs, val);
296 }
297 }
298 if (ista & 0x20) {
299 val = 0xfe & ReadISAC(cs, ISAC_ISTA);
300 if (val) {
301 isac_interrupt(cs, val);
302 }
303 }
304 if (ista & 0x10) {
305 val = 0x01;
306 isac_interrupt(cs, val);
307 }
308 ista = ReadISAC(cs, IPAC_ISTA - 0x80);
309 count++;
310 }
311 while ((ista & 0x3f) && (count < MAXCOUNT));
312
313 WriteISAC(cs, IPAC_MASK - 0x80, 0xFF);
314 WriteISAC(cs, IPAC_MASK - 0x80, 0xC0);
315 spin_unlock_irqrestore(&cs->lock, flags);
316 return IRQ_HANDLED;
317 }
318
319 static void
320 release_io_gazel(struct IsdnCardState *cs)
321 {
322 unsigned int i;
323
324 switch (cs->subtyp) {
325 case R647:
326 for (i = 0x0000; i < 0xC000; i += 0x1000)
327 release_region(i + cs->hw.gazel.hscx[0], 16);
328 release_region(0xC000 + cs->hw.gazel.hscx[0], 1);
329 break;
330
331 case R685:
332 release_region(cs->hw.gazel.hscx[0], 0x100);
333 release_region(cs->hw.gazel.cfg_reg, 0x80);
334 break;
335
336 case R753:
337 release_region(cs->hw.gazel.ipac, 0x8);
338 release_region(cs->hw.gazel.cfg_reg, 0x80);
339 break;
340
341 case R742:
342 release_region(cs->hw.gazel.ipac, 8);
343 break;
344 }
345 }
346
347 static int
348 reset_gazel(struct IsdnCardState *cs)
349 {
350 unsigned long plxcntrl, addr = cs->hw.gazel.cfg_reg;
351
352 switch (cs->subtyp) {
353 case R647:
354 writereg(addr, 0, 0);
355 HZDELAY(10);
356 writereg(addr, 0, 1);
357 HZDELAY(2);
358 break;
359 case R685:
360 plxcntrl = inl(addr + PLX_CNTRL);
361 plxcntrl |= (RESET_9050 + RESET_GAZEL);
362 outl(plxcntrl, addr + PLX_CNTRL);
363 plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
364 HZDELAY(4);
365 outl(plxcntrl, addr + PLX_CNTRL);
366 HZDELAY(10);
367 outb(INT_ISAC_EN + INT_HSCX_EN + INT_PCI_EN, addr + PLX_INCSR);
368 break;
369 case R753:
370 plxcntrl = inl(addr + PLX_CNTRL);
371 plxcntrl |= (RESET_9050 + RESET_GAZEL);
372 outl(plxcntrl, addr + PLX_CNTRL);
373 plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
374 WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
375 HZDELAY(4);
376 outl(plxcntrl, addr + PLX_CNTRL);
377 HZDELAY(10);
378 WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
379 WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
380 WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
381 WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
382 WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
383 outb(INT_IPAC_EN + INT_PCI_EN, addr + PLX_INCSR);
384 WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
385 break;
386 case R742:
387 WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
388 HZDELAY(4);
389 WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
390 WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
391 WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
392 WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
393 WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
394 WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
395 break;
396 }
397 return (0);
398 }
399
400 static int
401 Gazel_card_msg(struct IsdnCardState *cs, int mt, void *arg)
402 {
403 u_long flags;
404
405 switch (mt) {
406 case CARD_RESET:
407 spin_lock_irqsave(&cs->lock, flags);
408 reset_gazel(cs);
409 spin_unlock_irqrestore(&cs->lock, flags);
410 return (0);
411 case CARD_RELEASE:
412 release_io_gazel(cs);
413 return (0);
414 case CARD_INIT:
415 spin_lock_irqsave(&cs->lock, flags);
416 inithscxisac(cs, 1);
417 if ((cs->subtyp==R647)||(cs->subtyp==R685)) {
418 int i;
419 for (i=0;i<(2+MAX_WAITING_CALLS);i++) {
420 cs->bcs[i].hw.hscx.tsaxr0 = 0x1f;
421 cs->bcs[i].hw.hscx.tsaxr1 = 0x23;
422 }
423 }
424 spin_unlock_irqrestore(&cs->lock, flags);
425 return (0);
426 case CARD_TEST:
427 return (0);
428 }
429 return (0);
430 }
431
432 static int
433 reserve_regions(struct IsdnCard *card, struct IsdnCardState *cs)
434 {
435 unsigned int i, j, base = 0, adr = 0, len = 0;
436
437 switch (cs->subtyp) {
438 case R647:
439 base = cs->hw.gazel.hscx[0];
440 if (!request_region(adr = (0xC000 + base), len = 1, "gazel"))
441 goto error;
442 for (i = 0x0000; i < 0xC000; i += 0x1000) {
443 if (!request_region(adr = (i + base), len = 16, "gazel"))
444 goto error;
445 }
446 if (i != 0xC000) {
447 for (j = 0; j < i; j+= 0x1000)
448 release_region(j + base, 16);
449 release_region(0xC000 + base, 1);
450 goto error;
451 }
452 break;
453
454 case R685:
455 if (!request_region(adr = cs->hw.gazel.hscx[0], len = 0x100, "gazel"))
456 goto error;
457 if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
458 release_region(cs->hw.gazel.hscx[0],0x100);
459 goto error;
460 }
461 break;
462
463 case R753:
464 if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
465 goto error;
466 if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
467 release_region(cs->hw.gazel.ipac, 8);
468 goto error;
469 }
470 break;
471
472 case R742:
473 if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
474 goto error;
475 break;
476 }
477
478 return 0;
479
480 error:
481 printk(KERN_WARNING "Gazel: io ports 0x%x-0x%x already in use\n",
482 adr, adr + len);
483 return 1;
484 }
485
486 static int __devinit
487 setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
488 {
489 printk(KERN_INFO "Gazel: ISA PnP card automatic recognition\n");
490 // we got an irq parameter, assume it is an ISA card
491 // R742 decodes address even in not started...
492 // R647 returns FF if not present or not started
493 // eventually needs improvment
494 if (readreg_ipac(card->para[1], IPAC_ID) == 1)
495 cs->subtyp = R742;
496 else
497 cs->subtyp = R647;
498
499 setup_isac(cs);
500 cs->hw.gazel.cfg_reg = card->para[1] + 0xC000;
501 cs->hw.gazel.ipac = card->para[1];
502 cs->hw.gazel.isac = card->para[1] + 0x8000;
503 cs->hw.gazel.hscx[0] = card->para[1];
504 cs->hw.gazel.hscx[1] = card->para[1] + 0x4000;
505 cs->irq = card->para[0];
506 cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
507 cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
508 cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
509
510 switch (cs->subtyp) {
511 case R647:
512 printk(KERN_INFO "Gazel: Card ISA R647/R648 found\n");
513 cs->dc.isac.adf2 = 0x87;
514 printk(KERN_INFO
515 "Gazel: config irq:%d isac:0x%X cfg:0x%X\n",
516 cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
517 printk(KERN_INFO
518 "Gazel: hscx A:0x%X hscx B:0x%X\n",
519 cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
520
521 break;
522 case R742:
523 printk(KERN_INFO "Gazel: Card ISA R742 found\n");
524 test_and_set_bit(HW_IPAC, &cs->HW_Flags);
525 printk(KERN_INFO
526 "Gazel: config irq:%d ipac:0x%X\n",
527 cs->irq, cs->hw.gazel.ipac);
528 break;
529 }
530
531 return (0);
532 }
533
534 #ifdef CONFIG_PCI
535 static struct pci_dev *dev_tel __devinitdata = NULL;
536
537 static int __devinit
538 setup_gazelpci(struct IsdnCardState *cs)
539 {
540 u_int pci_ioaddr0 = 0, pci_ioaddr1 = 0;
541 u_char pci_irq = 0, found;
542 u_int nbseek, seekcard;
543
544 printk(KERN_WARNING "Gazel: PCI card automatic recognition\n");
545
546 found = 0;
547 seekcard = PCI_DEVICE_ID_PLX_R685;
548 for (nbseek = 0; nbseek < 4; nbseek++) {
549 if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
550 seekcard, dev_tel))) {
551 if (pci_enable_device(dev_tel))
552 return 1;
553 pci_irq = dev_tel->irq;
554 pci_ioaddr0 = pci_resource_start(dev_tel, 1);
555 pci_ioaddr1 = pci_resource_start(dev_tel, 2);
556 found = 1;
557 }
558 if (found)
559 break;
560 else {
561 switch (seekcard) {
562 case PCI_DEVICE_ID_PLX_R685:
563 seekcard = PCI_DEVICE_ID_PLX_R753;
564 break;
565 case PCI_DEVICE_ID_PLX_R753:
566 seekcard = PCI_DEVICE_ID_PLX_DJINN_ITOO;
567 break;
568 case PCI_DEVICE_ID_PLX_DJINN_ITOO:
569 seekcard = PCI_DEVICE_ID_PLX_OLITEC;
570 break;
571 }
572 }
573 }
574 if (!found) {
575 printk(KERN_WARNING "Gazel: No PCI card found\n");
576 return (1);
577 }
578 if (!pci_irq) {
579 printk(KERN_WARNING "Gazel: No IRQ for PCI card found\n");
580 return 1;
581 }
582 cs->hw.gazel.pciaddr[0] = pci_ioaddr0;
583 cs->hw.gazel.pciaddr[1] = pci_ioaddr1;
584 setup_isac(cs);
585 pci_ioaddr1 &= 0xfffe;
586 cs->hw.gazel.cfg_reg = pci_ioaddr0 & 0xfffe;
587 cs->hw.gazel.ipac = pci_ioaddr1;
588 cs->hw.gazel.isac = pci_ioaddr1 + 0x80;
589 cs->hw.gazel.hscx[0] = pci_ioaddr1;
590 cs->hw.gazel.hscx[1] = pci_ioaddr1 + 0x40;
591 cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
592 cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
593 cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
594 cs->irq = pci_irq;
595 cs->irq_flags |= IRQF_SHARED;
596
597 switch (seekcard) {
598 case PCI_DEVICE_ID_PLX_R685:
599 printk(KERN_INFO "Gazel: Card PCI R685 found\n");
600 cs->subtyp = R685;
601 cs->dc.isac.adf2 = 0x87;
602 printk(KERN_INFO
603 "Gazel: config irq:%d isac:0x%X cfg:0x%X\n",
604 cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
605 printk(KERN_INFO
606 "Gazel: hscx A:0x%X hscx B:0x%X\n",
607 cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
608 break;
609 case PCI_DEVICE_ID_PLX_R753:
610 case PCI_DEVICE_ID_PLX_DJINN_ITOO:
611 case PCI_DEVICE_ID_PLX_OLITEC:
612 printk(KERN_INFO "Gazel: Card PCI R753 found\n");
613 cs->subtyp = R753;
614 test_and_set_bit(HW_IPAC, &cs->HW_Flags);
615 printk(KERN_INFO
616 "Gazel: config irq:%d ipac:0x%X cfg:0x%X\n",
617 cs->irq, cs->hw.gazel.ipac, cs->hw.gazel.cfg_reg);
618 break;
619 }
620
621 return (0);
622 }
623 #endif /* CONFIG_PCI */
624
625 int __devinit
626 setup_gazel(struct IsdnCard *card)
627 {
628 struct IsdnCardState *cs = card->cs;
629 char tmp[64];
630 u_char val;
631
632 strcpy(tmp, gazel_revision);
633 printk(KERN_INFO "Gazel: Driver Revision %s\n", HiSax_getrev(tmp));
634
635 if (cs->typ != ISDN_CTYPE_GAZEL)
636 return (0);
637
638 if (card->para[0]) {
639 if (setup_gazelisa(card, cs))
640 return (0);
641 } else {
642
643 #ifdef CONFIG_PCI
644 if (setup_gazelpci(cs))
645 return (0);
646 #else
647 printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
648 return (0);
649 #endif /* CONFIG_PCI */
650 }
651
652 if (reserve_regions(card, cs)) {
653 return (0);
654 }
655 if (reset_gazel(cs)) {
656 printk(KERN_WARNING "Gazel: wrong IRQ\n");
657 release_io_gazel(cs);
658 return (0);
659 }
660 cs->readisac = &ReadISAC;
661 cs->writeisac = &WriteISAC;
662 cs->readisacfifo = &ReadISACfifo;
663 cs->writeisacfifo = &WriteISACfifo;
664 cs->BC_Read_Reg = &ReadHSCX;
665 cs->BC_Write_Reg = &WriteHSCX;
666 cs->BC_Send_Data = &hscx_fill_fifo;
667 cs->cardmsg = &Gazel_card_msg;
668
669 switch (cs->subtyp) {
670 case R647:
671 case R685:
672 cs->irq_func = &gazel_interrupt;
673 ISACVersion(cs, "Gazel:");
674 if (HscxVersion(cs, "Gazel:")) {
675 printk(KERN_WARNING
676 "Gazel: wrong HSCX versions check IO address\n");
677 release_io_gazel(cs);
678 return (0);
679 }
680 break;
681 case R742:
682 case R753:
683 cs->irq_func = &gazel_interrupt_ipac;
684 val = ReadISAC(cs, IPAC_ID - 0x80);
685 printk(KERN_INFO "Gazel: IPAC version %x\n", val);
686 break;
687 }
688
689 return (1);
690 }