[ISDN] Hisax: eliminate many unnecessary references to CardType[]
[linux-2.6.git] / drivers / isdn / hisax / gazel.c
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_LEGACY
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 = pci_find_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_LEGACY */
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_LEGACY
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 }