[PATCH] ARM SMP: TLB implementations only affect local CPU
[linux-2.6] / 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/config.h>
15 #include <linux/init.h>
16 #include "hisax.h"
17 #include "isac.h"
18 #include "hscx.h"
19 #include "isdnl1.h"
20 #include "ipac.h"
21 #include <linux/pci.h>
22
23 extern const char *CardType[];
24 static const char *gazel_revision = "$Revision: 2.19.2.4 $";
25
26 #define R647      1
27 #define R685      2
28 #define R753      3
29 #define R742      4
30
31 #define PLX_CNTRL    0x50       /* registre de controle PLX */
32 #define RESET_GAZEL  0x4
33 #define RESET_9050   0x40000000
34 #define PLX_INCSR    0x4C       /* registre d'IT du 9050 */
35 #define INT_ISAC_EN  0x8        /* 1 = enable IT isac */
36 #define INT_ISAC     0x20       /* 1 = IT isac en cours */
37 #define INT_HSCX_EN  0x1        /* 1 = enable IT hscx */
38 #define INT_HSCX     0x4        /* 1 = IT hscx en cours */
39 #define INT_PCI_EN   0x40       /* 1 = enable IT PCI */
40 #define INT_IPAC_EN  0x3        /* enable IT ipac */
41
42
43 #define byteout(addr,val) outb(val,addr)
44 #define bytein(addr) inb(addr)
45
46 static inline u_char
47 readreg(unsigned int adr, u_short off)
48 {
49         return bytein(adr + off);
50 }
51
52 static inline void
53 writereg(unsigned int adr, u_short off, u_char data)
54 {
55         byteout(adr + off, data);
56 }
57
58
59 static inline void
60 read_fifo(unsigned int adr, u_char * data, int size)
61 {
62         insb(adr, data, size);
63 }
64
65 static void
66 write_fifo(unsigned int adr, u_char * data, int size)
67 {
68         outsb(adr, data, size);
69 }
70
71 static inline u_char
72 readreg_ipac(unsigned int adr, u_short off)
73 {
74         register u_char ret;
75
76         byteout(adr, off);
77         ret = bytein(adr + 4);
78         return ret;
79 }
80
81 static inline void
82 writereg_ipac(unsigned int adr, u_short off, u_char data)
83 {
84         byteout(adr, off);
85         byteout(adr + 4, data);
86 }
87
88
89 static inline void
90 read_fifo_ipac(unsigned int adr, u_short off, u_char * data, int size)
91 {
92         byteout(adr, off);
93         insb(adr + 4, data, size);
94 }
95
96 static void
97 write_fifo_ipac(unsigned int adr, u_short off, u_char * data, int size)
98 {
99         byteout(adr, off);
100         outsb(adr + 4, data, size);
101 }
102
103 /* Interface functions */
104
105 static u_char
106 ReadISAC(struct IsdnCardState *cs, u_char offset)
107 {
108         u_short off2 = offset;
109
110         switch (cs->subtyp) {
111                 case R647:
112                         off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
113                 case R685:
114                         return (readreg(cs->hw.gazel.isac, off2));
115                 case R753:
116                 case R742:
117                         return (readreg_ipac(cs->hw.gazel.ipac, 0x80 + off2));
118         }
119         return 0;
120 }
121
122 static void
123 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
124 {
125         u_short off2 = offset;
126
127         switch (cs->subtyp) {
128                 case R647:
129                         off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
130                 case R685:
131                         writereg(cs->hw.gazel.isac, off2, value);
132                         break;
133                 case R753:
134                 case R742:
135                         writereg_ipac(cs->hw.gazel.ipac, 0x80 + off2, value);
136                         break;
137         }
138 }
139
140 static void
141 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
142 {
143         switch (cs->subtyp) {
144                 case R647:
145                 case R685:
146                         read_fifo(cs->hw.gazel.isacfifo, data, size);
147                         break;
148                 case R753:
149                 case R742:
150                         read_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
151                         break;
152         }
153 }
154
155 static void
156 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
157 {
158         switch (cs->subtyp) {
159                 case R647:
160                 case R685:
161                         write_fifo(cs->hw.gazel.isacfifo, data, size);
162                         break;
163                 case R753:
164                 case R742:
165                         write_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
166                         break;
167         }
168 }
169
170 static void
171 ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
172 {
173         switch (cs->subtyp) {
174                 case R647:
175                 case R685:
176                         read_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
177                         break;
178                 case R753:
179                 case R742:
180                         read_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
181                         break;
182         }
183 }
184
185 static void
186 WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
187 {
188         switch (cs->subtyp) {
189                 case R647:
190                 case R685:
191                         write_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
192                         break;
193                 case R753:
194                 case R742:
195                         write_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
196                         break;
197         }
198 }
199
200 static u_char
201 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
202 {
203         u_short off2 = offset;
204
205         switch (cs->subtyp) {
206                 case R647:
207                         off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
208                 case R685:
209                         return (readreg(cs->hw.gazel.hscx[hscx], off2));
210                 case R753:
211                 case R742:
212                         return (readreg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2));
213         }
214         return 0;
215 }
216
217 static void
218 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
219 {
220         u_short off2 = offset;
221
222         switch (cs->subtyp) {
223                 case R647:
224                         off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
225                 case R685:
226                         writereg(cs->hw.gazel.hscx[hscx], off2, value);
227                         break;
228                 case R753:
229                 case R742:
230                         writereg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2, value);
231                         break;
232         }
233 }
234
235 /*
236  * fast interrupt HSCX stuff goes here
237  */
238
239 #define READHSCX(cs, nr, reg) ReadHSCX(cs, nr, reg)
240 #define WRITEHSCX(cs, nr, reg, data) WriteHSCX(cs, nr, reg, data)
241 #define READHSCXFIFO(cs, nr, ptr, cnt) ReadHSCXfifo(cs, nr, ptr, cnt)
242 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) WriteHSCXfifo(cs, nr, ptr, cnt)
243
244 #include "hscx_irq.c"
245
246 static irqreturn_t
247 gazel_interrupt(int intno, void *dev_id, struct pt_regs *regs)
248 {
249 #define MAXCOUNT 5
250         struct IsdnCardState *cs = dev_id;
251         u_char valisac, valhscx;
252         int count = 0;
253         u_long flags;
254
255         spin_lock_irqsave(&cs->lock, flags);
256         do {
257                 valhscx = ReadHSCX(cs, 1, HSCX_ISTA);
258                 if (valhscx)
259                         hscx_int_main(cs, valhscx);
260                 valisac = ReadISAC(cs, ISAC_ISTA);
261                 if (valisac)
262                         isac_interrupt(cs, valisac);
263                 count++;
264         } while ((valhscx || valisac) && (count < MAXCOUNT));
265
266         WriteHSCX(cs, 0, HSCX_MASK, 0xFF);
267         WriteHSCX(cs, 1, HSCX_MASK, 0xFF);
268         WriteISAC(cs, ISAC_MASK, 0xFF);
269         WriteISAC(cs, ISAC_MASK, 0x0);
270         WriteHSCX(cs, 0, HSCX_MASK, 0x0);
271         WriteHSCX(cs, 1, HSCX_MASK, 0x0);
272         spin_unlock_irqrestore(&cs->lock, flags);
273         return IRQ_HANDLED;
274 }
275
276
277 static irqreturn_t
278 gazel_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
279 {
280         struct IsdnCardState *cs = dev_id;
281         u_char ista, val;
282         int count = 0;
283         u_long flags;
284         
285         spin_lock_irqsave(&cs->lock, flags);
286         ista = ReadISAC(cs, IPAC_ISTA - 0x80);
287         do {
288                 if (ista & 0x0f) {
289                         val = ReadHSCX(cs, 1, HSCX_ISTA);
290                         if (ista & 0x01)
291                                 val |= 0x01;
292                         if (ista & 0x04)
293                                 val |= 0x02;
294                         if (ista & 0x08)
295                                 val |= 0x04;
296                         if (val) {
297                                 hscx_int_main(cs, val);
298                         }
299                 }
300                 if (ista & 0x20) {
301                         val = 0xfe & ReadISAC(cs, ISAC_ISTA);
302                         if (val) {
303                                 isac_interrupt(cs, val);
304                         }
305                 }
306                 if (ista & 0x10) {
307                         val = 0x01;
308                         isac_interrupt(cs, val);
309                 }
310                 ista = ReadISAC(cs, IPAC_ISTA - 0x80);
311                 count++;
312         }
313         while ((ista & 0x3f) && (count < MAXCOUNT));
314
315         WriteISAC(cs, IPAC_MASK - 0x80, 0xFF);
316         WriteISAC(cs, IPAC_MASK - 0x80, 0xC0);
317         spin_unlock_irqrestore(&cs->lock, flags);
318         return IRQ_HANDLED;
319 }
320
321 static void
322 release_io_gazel(struct IsdnCardState *cs)
323 {
324         unsigned int i;
325
326         switch (cs->subtyp) {
327                 case R647:
328                         for (i = 0x0000; i < 0xC000; i += 0x1000)
329                                 release_region(i + cs->hw.gazel.hscx[0], 16);
330                         release_region(0xC000 + cs->hw.gazel.hscx[0], 1);
331                         break;
332
333                 case R685:
334                         release_region(cs->hw.gazel.hscx[0], 0x100);
335                         release_region(cs->hw.gazel.cfg_reg, 0x80);
336                         break;
337
338                 case R753:
339                         release_region(cs->hw.gazel.ipac, 0x8);
340                         release_region(cs->hw.gazel.cfg_reg, 0x80);
341                         break;
342
343                 case R742:
344                         release_region(cs->hw.gazel.ipac, 8);
345                         break;
346         }
347 }
348
349 static int
350 reset_gazel(struct IsdnCardState *cs)
351 {
352         unsigned long plxcntrl, addr = cs->hw.gazel.cfg_reg;
353
354         switch (cs->subtyp) {
355                 case R647:
356                         writereg(addr, 0, 0);
357                         HZDELAY(10);
358                         writereg(addr, 0, 1);
359                         HZDELAY(2);
360                         break;
361                 case R685:
362                         plxcntrl = inl(addr + PLX_CNTRL);
363                         plxcntrl |= (RESET_9050 + RESET_GAZEL);
364                         outl(plxcntrl, addr + PLX_CNTRL);
365                         plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
366                         HZDELAY(4);
367                         outl(plxcntrl, addr + PLX_CNTRL);
368                         HZDELAY(10);
369                         outb(INT_ISAC_EN + INT_HSCX_EN + INT_PCI_EN, addr + PLX_INCSR);
370                         break;
371                 case R753:
372                         plxcntrl = inl(addr + PLX_CNTRL);
373                         plxcntrl |= (RESET_9050 + RESET_GAZEL);
374                         outl(plxcntrl, addr + PLX_CNTRL);
375                         plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
376                         WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
377                         HZDELAY(4);
378                         outl(plxcntrl, addr + PLX_CNTRL);
379                         HZDELAY(10);
380                         WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
381                         WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
382                         WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
383                         WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
384                         WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
385                         outb(INT_IPAC_EN + INT_PCI_EN, addr + PLX_INCSR);
386                         WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
387                         break;
388                 case R742:
389                         WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
390                         HZDELAY(4);
391                         WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
392                         WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
393                         WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
394                         WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
395                         WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
396                         WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
397                         break;
398         }
399         return (0);
400 }
401
402 static int
403 Gazel_card_msg(struct IsdnCardState *cs, int mt, void *arg)
404 {
405         u_long flags;
406
407         switch (mt) {
408                 case CARD_RESET:
409                         spin_lock_irqsave(&cs->lock, flags);
410                         reset_gazel(cs);
411                         spin_unlock_irqrestore(&cs->lock, flags);
412                         return (0);
413                 case CARD_RELEASE:
414                         release_io_gazel(cs);
415                         return (0);
416                 case CARD_INIT:
417                         spin_lock_irqsave(&cs->lock, flags);
418                         inithscxisac(cs, 1);
419                         if ((cs->subtyp==R647)||(cs->subtyp==R685)) {
420                                 int i;
421                                 for (i=0;i<(2+MAX_WAITING_CALLS);i++) {
422                                         cs->bcs[i].hw.hscx.tsaxr0 = 0x1f;
423                                         cs->bcs[i].hw.hscx.tsaxr1 = 0x23;
424                                 }
425                         }
426                         spin_unlock_irqrestore(&cs->lock, flags);
427                         return (0);
428                 case CARD_TEST:
429                         return (0);
430         }
431         return (0);
432 }
433
434 static int
435 reserve_regions(struct IsdnCard *card, struct IsdnCardState *cs)
436 {
437         unsigned int i, j, base = 0, adr = 0, len = 0;
438
439         switch (cs->subtyp) {
440                 case R647:
441                         base = cs->hw.gazel.hscx[0];
442                         if (!request_region(adr = (0xC000 + base), len = 1, "gazel"))
443                                 goto error;
444                         for (i = 0x0000; i < 0xC000; i += 0x1000) {
445                                 if (!request_region(adr = (i + base), len = 16, "gazel"))
446                                         goto error;
447                         }
448                         if (i != 0xC000) {
449                                 for (j = 0; j < i; j+= 0x1000)
450                                         release_region(j + base, 16);
451                                 release_region(0xC000 + base, 1);
452                                 goto error;
453                         }
454                         break;
455
456                 case R685:
457                         if (!request_region(adr = cs->hw.gazel.hscx[0], len = 0x100, "gazel"))
458                                 goto error;
459                         if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
460                                 release_region(cs->hw.gazel.hscx[0],0x100);
461                                 goto error;
462                         }
463                         break;
464
465                 case R753:
466                         if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
467                                 goto error;
468                         if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
469                                 release_region(cs->hw.gazel.ipac, 8);
470                                 goto error;
471                         }
472                         break;
473
474                 case R742:
475                         if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
476                                 goto error;
477                         break;
478         }
479
480         return 0;
481
482       error:
483         printk(KERN_WARNING "Gazel: %s io ports 0x%x-0x%x already in use\n",
484                CardType[cs->typ], adr, adr + len);
485         return 1;
486 }
487
488 static int __init
489 setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
490 {
491         printk(KERN_INFO "Gazel: ISA PnP card automatic recognition\n");
492         // we got an irq parameter, assume it is an ISA card
493         // R742 decodes address even in not started...
494         // R647 returns FF if not present or not started
495         // eventually needs improvment
496         if (readreg_ipac(card->para[1], IPAC_ID) == 1)
497                 cs->subtyp = R742;
498         else
499                 cs->subtyp = R647;
500
501         setup_isac(cs);
502         cs->hw.gazel.cfg_reg = card->para[1] + 0xC000;
503         cs->hw.gazel.ipac = card->para[1];
504         cs->hw.gazel.isac = card->para[1] + 0x8000;
505         cs->hw.gazel.hscx[0] = card->para[1];
506         cs->hw.gazel.hscx[1] = card->para[1] + 0x4000;
507         cs->irq = card->para[0];
508         cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
509         cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
510         cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
511
512         switch (cs->subtyp) {
513                 case R647:
514                         printk(KERN_INFO "Gazel: Card ISA R647/R648 found\n");
515                         cs->dc.isac.adf2 = 0x87;
516                         printk(KERN_INFO
517                                 "Gazel: config irq:%d isac:0x%X  cfg:0x%X\n",
518                                 cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
519                         printk(KERN_INFO
520                                 "Gazel: hscx A:0x%X  hscx B:0x%X\n",
521                                 cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
522
523                         break;
524                 case R742:
525                         printk(KERN_INFO "Gazel: Card ISA R742 found\n");
526                         test_and_set_bit(HW_IPAC, &cs->HW_Flags);
527                         printk(KERN_INFO
528                                "Gazel: config irq:%d ipac:0x%X\n",
529                                cs->irq, cs->hw.gazel.ipac);
530                         break;
531         }
532
533         return (0);
534 }
535
536 static struct pci_dev *dev_tel __initdata = NULL;
537
538 static int __init
539 setup_gazelpci(struct IsdnCardState *cs)
540 {
541         u_int pci_ioaddr0 = 0, pci_ioaddr1 = 0;
542         u_char pci_irq = 0, found;
543         u_int nbseek, seekcard;
544
545         printk(KERN_WARNING "Gazel: PCI card automatic recognition\n");
546
547         found = 0;
548         seekcard = PCI_DEVICE_ID_PLX_R685;
549         for (nbseek = 0; nbseek < 3; nbseek++) {
550                 if ((dev_tel = pci_find_device(PCI_VENDOR_ID_PLX, 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                         }
569                 }
570         }
571         if (!found) {
572                 printk(KERN_WARNING "Gazel: No PCI card found\n");
573                 return (1);
574         }
575         if (!pci_irq) {
576                 printk(KERN_WARNING "Gazel: No IRQ for PCI card found\n");
577                 return 1;
578         }
579         cs->hw.gazel.pciaddr[0] = pci_ioaddr0;
580         cs->hw.gazel.pciaddr[1] = pci_ioaddr1;
581         setup_isac(cs);
582         pci_ioaddr1 &= 0xfffe;
583         cs->hw.gazel.cfg_reg = pci_ioaddr0 & 0xfffe;
584         cs->hw.gazel.ipac = pci_ioaddr1;
585         cs->hw.gazel.isac = pci_ioaddr1 + 0x80;
586         cs->hw.gazel.hscx[0] = pci_ioaddr1;
587         cs->hw.gazel.hscx[1] = pci_ioaddr1 + 0x40;
588         cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
589         cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
590         cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
591         cs->irq = pci_irq;
592         cs->irq_flags |= SA_SHIRQ;
593
594         switch (seekcard) {
595                 case PCI_DEVICE_ID_PLX_R685:
596                         printk(KERN_INFO "Gazel: Card PCI R685 found\n");
597                         cs->subtyp = R685;
598                         cs->dc.isac.adf2 = 0x87;
599                         printk(KERN_INFO
600                             "Gazel: config irq:%d isac:0x%X  cfg:0x%X\n",
601                         cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
602                         printk(KERN_INFO
603                                "Gazel: hscx A:0x%X  hscx B:0x%X\n",
604                              cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
605                         break;
606                 case PCI_DEVICE_ID_PLX_R753:
607                 case PCI_DEVICE_ID_PLX_DJINN_ITOO:
608                         printk(KERN_INFO "Gazel: Card PCI R753 found\n");
609                         cs->subtyp = R753;
610                         test_and_set_bit(HW_IPAC, &cs->HW_Flags);
611                         printk(KERN_INFO
612                             "Gazel: config irq:%d ipac:0x%X  cfg:0x%X\n",
613                         cs->irq, cs->hw.gazel.ipac, cs->hw.gazel.cfg_reg);
614                         break;
615         }
616
617         return (0);
618 }
619
620 int __init
621 setup_gazel(struct IsdnCard *card)
622 {
623         struct IsdnCardState *cs = card->cs;
624         char tmp[64];
625         u_char val;
626
627         strcpy(tmp, gazel_revision);
628         printk(KERN_INFO "Gazel: Driver Revision %s\n", HiSax_getrev(tmp));
629
630         if (cs->typ != ISDN_CTYPE_GAZEL)
631                 return (0);
632
633         if (card->para[0]) {
634                 if (setup_gazelisa(card, cs))
635                         return (0);
636         } else {
637
638 #ifdef CONFIG_PCI
639                 if (setup_gazelpci(cs))
640                         return (0);
641 #else
642                 printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
643                 return (0);
644 #endif                          /* CONFIG_PCI */
645         }
646
647         if (reserve_regions(card, cs)) {
648                 return (0);
649         }
650         if (reset_gazel(cs)) {
651                 printk(KERN_WARNING "Gazel: wrong IRQ\n");
652                 release_io_gazel(cs);
653                 return (0);
654         }
655         cs->readisac = &ReadISAC;
656         cs->writeisac = &WriteISAC;
657         cs->readisacfifo = &ReadISACfifo;
658         cs->writeisacfifo = &WriteISACfifo;
659         cs->BC_Read_Reg = &ReadHSCX;
660         cs->BC_Write_Reg = &WriteHSCX;
661         cs->BC_Send_Data = &hscx_fill_fifo;
662         cs->cardmsg = &Gazel_card_msg;
663
664         switch (cs->subtyp) {
665                 case R647:
666                 case R685:
667                         cs->irq_func = &gazel_interrupt;
668                         ISACVersion(cs, "Gazel:");
669                         if (HscxVersion(cs, "Gazel:")) {
670                                 printk(KERN_WARNING
671                                        "Gazel: wrong HSCX versions check IO address\n");
672                                 release_io_gazel(cs);
673                                 return (0);
674                         }
675                         break;
676                 case R742:
677                 case R753:
678                         cs->irq_func = &gazel_interrupt_ipac;
679                         val = ReadISAC(cs, IPAC_ID - 0x80);
680                         printk(KERN_INFO "Gazel: IPAC version %x\n", val);
681                         break;
682         }
683
684         return (1);
685 }