20642f0e7bfe85f1b252099e18420d48a0b7c1b4
[linux-2.6.git] / drivers / pcmcia / pd6729.c
1 /*
2  * Driver for the Cirrus PD6729 PCI-PCMCIA bridge.
3  *
4  * Based on the i82092.c driver.
5  *
6  * This software may be used and distributed according to the terms of
7  * the GNU General Public License, incorporated herein by reference.
8  */
9
10 #include <linux/kernel.h>
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/init.h>
15 #include <linux/workqueue.h>
16 #include <linux/interrupt.h>
17 #include <linux/device.h>
18
19 #include <pcmcia/cs_types.h>
20 #include <pcmcia/ss.h>
21 #include <pcmcia/cs.h>
22
23 #include <asm/system.h>
24 #include <asm/io.h>
25
26 #include "pd6729.h"
27 #include "i82365.h"
28 #include "cirrus.h"
29
30 MODULE_LICENSE("GPL");
31 MODULE_DESCRIPTION("Driver for the Cirrus PD6729 PCI-PCMCIA bridge");
32 MODULE_AUTHOR("Jun Komuro <komurojun-mbn@nifty.com>");
33
34 #define MAX_SOCKETS 2
35
36 /*
37  * simple helper functions
38  * External clock time, in nanoseconds.  120 ns = 8.33 MHz
39  */
40 #define to_cycles(ns)   ((ns)/120)
41
42 #ifndef NO_IRQ
43 #define NO_IRQ  ((unsigned int)(0))
44 #endif
45
46 /*
47  * PARAMETERS
48  *  irq_mode=n
49  *     Specifies the interrupt delivery mode.  The default (1) is to use PCI
50  *     interrupts; a value of 0 selects ISA interrupts. This must be set for
51  *     correct operation of PCI card readers.
52  *
53  *  irq_list=i,j,...
54  *     This list limits the set of interrupts that can be used by PCMCIA
55  *     cards.
56  *     The default list is 3,4,5,7,9,10,11.
57  *     (irq_list parameter is not used, if irq_mode = 1)
58  */
59
60 static int irq_mode = 1; /* 0 = ISA interrupt, 1 = PCI interrupt */
61 static int irq_list[16];
62 static int irq_list_count = 0;
63
64 module_param(irq_mode, int, 0444);
65 module_param_array(irq_list, int, &irq_list_count, 0444);
66 MODULE_PARM_DESC(irq_mode,
67                 "interrupt delivery mode. 0 = ISA, 1 = PCI. default is 1");
68 MODULE_PARM_DESC(irq_list, "interrupts that can be used by PCMCIA cards");
69
70 static DEFINE_SPINLOCK(port_lock);
71
72 /* basic value read/write functions */
73
74 static unsigned char indirect_read(struct pd6729_socket *socket,
75                                    unsigned short reg)
76 {
77         unsigned long port;
78         unsigned char val;
79         unsigned long flags;
80
81         spin_lock_irqsave(&port_lock, flags);
82         reg += socket->number * 0x40;
83         port = socket->io_base;
84         outb(reg, port);
85         val = inb(port + 1);
86         spin_unlock_irqrestore(&port_lock, flags);
87
88         return val;
89 }
90
91 static unsigned short indirect_read16(struct pd6729_socket *socket,
92                                       unsigned short reg)
93 {
94         unsigned long port;
95         unsigned short tmp;
96         unsigned long flags;
97
98         spin_lock_irqsave(&port_lock, flags);
99         reg  = reg + socket->number * 0x40;
100         port = socket->io_base;
101         outb(reg, port);
102         tmp = inb(port + 1);
103         reg++;
104         outb(reg, port);
105         tmp = tmp | (inb(port + 1) << 8);
106         spin_unlock_irqrestore(&port_lock, flags);
107
108         return tmp;
109 }
110
111 static void indirect_write(struct pd6729_socket *socket, unsigned short reg,
112                            unsigned char value)
113 {
114         unsigned long port;
115         unsigned long flags;
116
117         spin_lock_irqsave(&port_lock, flags);
118         reg = reg + socket->number * 0x40;
119         port = socket->io_base;
120         outb(reg, port);
121         outb(value, port + 1);
122         spin_unlock_irqrestore(&port_lock, flags);
123 }
124
125 static void indirect_setbit(struct pd6729_socket *socket, unsigned short reg,
126                             unsigned char mask)
127 {
128         unsigned long port;
129         unsigned char val;
130         unsigned long flags;
131
132         spin_lock_irqsave(&port_lock, flags);
133         reg = reg + socket->number * 0x40;
134         port = socket->io_base;
135         outb(reg, port);
136         val = inb(port + 1);
137         val |= mask;
138         outb(reg, port);
139         outb(val, port + 1);
140         spin_unlock_irqrestore(&port_lock, flags);
141 }
142
143 static void indirect_resetbit(struct pd6729_socket *socket, unsigned short reg,
144                               unsigned char mask)
145 {
146         unsigned long port;
147         unsigned char val;
148         unsigned long flags;
149
150         spin_lock_irqsave(&port_lock, flags);
151         reg = reg + socket->number * 0x40;
152         port = socket->io_base;
153         outb(reg, port);
154         val = inb(port + 1);
155         val &= ~mask;
156         outb(reg, port);
157         outb(val, port + 1);
158         spin_unlock_irqrestore(&port_lock, flags);
159 }
160
161 static void indirect_write16(struct pd6729_socket *socket, unsigned short reg,
162                              unsigned short value)
163 {
164         unsigned long port;
165         unsigned char val;
166         unsigned long flags;
167
168         spin_lock_irqsave(&port_lock, flags);
169         reg = reg + socket->number * 0x40;
170         port = socket->io_base;
171
172         outb(reg, port);
173         val = value & 255;
174         outb(val, port + 1);
175
176         reg++;
177
178         outb(reg, port);
179         val = value >> 8;
180         outb(val, port + 1);
181         spin_unlock_irqrestore(&port_lock, flags);
182 }
183
184 /* Interrupt handler functionality */
185
186 static irqreturn_t pd6729_interrupt(int irq, void *dev, struct pt_regs *regs)
187 {
188         struct pd6729_socket *socket = (struct pd6729_socket *)dev;
189         int i;
190         int loopcount = 0;
191         int handled = 0;
192         unsigned int events, active = 0;
193
194         while (1) {
195                 loopcount++;
196                 if (loopcount > 20) {
197                         printk(KERN_ERR "pd6729: infinite eventloop "
198                                "in interrupt\n");
199                         break;
200                 }
201
202                 active = 0;
203
204                 for (i = 0; i < MAX_SOCKETS; i++) {
205                         unsigned int csc;
206
207                         /* card status change register */
208                         csc = indirect_read(&socket[i], I365_CSC);
209                         if (csc == 0)  /* no events on this socket */
210                                 continue;
211
212                         handled = 1;
213                         events = 0;
214
215                         if (csc & I365_CSC_DETECT) {
216                                 events |= SS_DETECT;
217                                 dprintk("Card detected in socket %i!\n", i);
218                         }
219
220                         if (indirect_read(&socket[i], I365_INTCTL)
221                                                 & I365_PC_IOCARD) {
222                                 /* For IO/CARDS, bit 0 means "read the card" */
223                                 events |= (csc & I365_CSC_STSCHG)
224                                                 ? SS_STSCHG : 0;
225                         } else {
226                                 /* Check for battery/ready events */
227                                 events |= (csc & I365_CSC_BVD1)
228                                                 ? SS_BATDEAD : 0;
229                                 events |= (csc & I365_CSC_BVD2)
230                                                 ? SS_BATWARN : 0;
231                                 events |= (csc & I365_CSC_READY)
232                                                 ? SS_READY : 0;
233                         }
234
235                         if (events) {
236                                 pcmcia_parse_events(&socket[i].socket, events);
237                         }
238                         active |= events;
239                 }
240
241                 if (active == 0) /* no more events to handle */
242                         break;
243         }
244         return IRQ_RETVAL(handled);
245 }
246
247 /* socket functions */
248
249 static void pd6729_interrupt_wrapper(unsigned long data)
250 {
251         struct pd6729_socket *socket = (struct pd6729_socket *) data;
252
253         pd6729_interrupt(0, (void *)socket, NULL);
254         mod_timer(&socket->poll_timer, jiffies + HZ);
255 }
256
257 static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
258 {
259         struct pd6729_socket *socket
260                         = container_of(sock, struct pd6729_socket, socket);
261         unsigned int status;
262         unsigned int data;
263         struct pd6729_socket *t;
264
265         /* Interface Status Register */
266         status = indirect_read(socket, I365_STATUS);
267         *value = 0;
268
269         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
270                 *value |= SS_DETECT;
271         }
272
273         /*
274          * IO cards have a different meaning of bits 0,1
275          * Also notice the inverse-logic on the bits
276          */
277         if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
278                 /* IO card */
279                 if (!(status & I365_CS_STSCHG))
280                         *value |= SS_STSCHG;
281         } else {
282                 /* non I/O card */
283                 if (!(status & I365_CS_BVD1))
284                         *value |= SS_BATDEAD;
285                 if (!(status & I365_CS_BVD2))
286                         *value |= SS_BATWARN;
287         }
288
289         if (status & I365_CS_WRPROT)
290                 *value |= SS_WRPROT;    /* card is write protected */
291
292         if (status & I365_CS_READY)
293                 *value |= SS_READY;     /* card is not busy */
294
295         if (status & I365_CS_POWERON)
296                 *value |= SS_POWERON;   /* power is applied to the card */
297
298         t = (socket->number) ? socket : socket + 1;
299         indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
300         data = indirect_read16(t, PD67_EXT_DATA);
301         *value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
302
303         return 0;
304 }
305
306
307 static int pd6729_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
308 {
309         struct pd6729_socket *socket
310                         = container_of(sock, struct pd6729_socket, socket);
311         unsigned char reg, vcc, vpp;
312
313         state->flags    = 0;
314         state->Vcc      = 0;
315         state->Vpp      = 0;
316         state->io_irq   = 0;
317         state->csc_mask = 0;
318
319         /* First the power status of the socket */
320         reg = indirect_read(socket, I365_POWER);
321
322         if (reg & I365_PWR_AUTO)
323                 state->flags |= SS_PWR_AUTO;  /* Automatic Power Switch */
324
325         if (reg & I365_PWR_OUT)
326                 state->flags |= SS_OUTPUT_ENA; /* Output signals are enabled */
327
328         vcc = reg & I365_VCC_MASK;    vpp = reg & I365_VPP1_MASK;
329
330         if (reg & I365_VCC_5V) {
331                 state->Vcc = (indirect_read(socket, PD67_MISC_CTL_1) &
332                         PD67_MC1_VCC_3V) ? 33 : 50;
333
334                 if (vpp == I365_VPP1_5V) {
335                         if (state->Vcc == 50)
336                                 state->Vpp = 50;
337                         else
338                                 state->Vpp = 33;
339                 }
340                 if (vpp == I365_VPP1_12V)
341                         state->Vpp = 120;
342         }
343
344         /* Now the IO card, RESET flags and IO interrupt */
345         reg = indirect_read(socket, I365_INTCTL);
346
347         if ((reg & I365_PC_RESET) == 0)
348                 state->flags |= SS_RESET;
349         if (reg & I365_PC_IOCARD)
350                 state->flags |= SS_IOCARD; /* This is an IO card */
351
352         /* Set the IRQ number */
353         state->io_irq = socket->card_irq;
354
355         /* Card status change */
356         reg = indirect_read(socket, I365_CSCINT);
357
358         if (reg & I365_CSC_DETECT)
359                 state->csc_mask |= SS_DETECT; /* Card detect is enabled */
360
361         if (state->flags & SS_IOCARD) {/* IO Cards behave different */
362                 if (reg & I365_CSC_STSCHG)
363                         state->csc_mask |= SS_STSCHG;
364         } else {
365                 if (reg & I365_CSC_BVD1)
366                         state->csc_mask |= SS_BATDEAD;
367                 if (reg & I365_CSC_BVD2)
368                         state->csc_mask |= SS_BATWARN;
369                 if (reg & I365_CSC_READY)
370                         state->csc_mask |= SS_READY;
371         }
372
373         return 0;
374 }
375
376 static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
377 {
378         struct pd6729_socket *socket
379                         = container_of(sock, struct pd6729_socket, socket);
380         unsigned char reg, data;
381
382         /* First, set the global controller options */
383         indirect_write(socket, I365_GBLCTL, 0x00);
384         indirect_write(socket, I365_GENCTL, 0x00);
385
386         /* Values for the IGENC register */
387         socket->card_irq = state->io_irq;
388
389         reg = 0;
390         /* The reset bit has "inverse" logic */
391         if (!(state->flags & SS_RESET))
392                 reg |= I365_PC_RESET;
393         if (state->flags & SS_IOCARD)
394                 reg |= I365_PC_IOCARD;
395
396         /* IGENC, Interrupt and General Control Register */
397         indirect_write(socket, I365_INTCTL, reg);
398
399         /* Power registers */
400
401         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
402
403         if (state->flags & SS_PWR_AUTO) {
404                 dprintk("Auto power\n");
405                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
406         }
407         if (state->flags & SS_OUTPUT_ENA) {
408                 dprintk("Power Enabled\n");
409                 reg |= I365_PWR_OUT;    /* enable power */
410         }
411
412         switch (state->Vcc) {
413         case 0:
414                 break;
415         case 33:
416                 dprintk("setting voltage to Vcc to 3.3V on socket %i\n",
417                         socket->number);
418                 reg |= I365_VCC_5V;
419                 indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
420                 break;
421         case 50:
422                 dprintk("setting voltage to Vcc to 5V on socket %i\n",
423                         socket->number);
424                 reg |= I365_VCC_5V;
425                 indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
426                 break;
427         default:
428                 dprintk("pd6729: pd6729_set_socket called with "
429                                 "invalid VCC power value: %i\n",
430                         state->Vcc);
431                 return -EINVAL;
432         }
433
434         switch (state->Vpp) {
435         case 0:
436                 dprintk("not setting Vpp on socket %i\n", socket->number);
437                 break;
438         case 33:
439         case 50:
440                 dprintk("setting Vpp to Vcc for socket %i\n", socket->number);
441                 reg |= I365_VPP1_5V;
442                 break;
443         case 120:
444                 dprintk("setting Vpp to 12.0\n");
445                 reg |= I365_VPP1_12V;
446                 break;
447         default:
448                 dprintk("pd6729: pd6729_set_socket called with invalid VPP power value: %i\n",
449                         state->Vpp);
450                 return -EINVAL;
451         }
452
453         /* only write if changed */
454         if (reg != indirect_read(socket, I365_POWER))
455                 indirect_write(socket, I365_POWER, reg);
456
457         if (irq_mode == 1) {
458                  /* all interrupts are to be done as PCI interrupts */
459                 data = PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ;
460         } else
461                 data = 0;
462
463         indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
464         indirect_write(socket, PD67_EXT_DATA, data);
465
466         /* Enable specific interrupt events */
467
468         reg = 0x00;
469         if (state->csc_mask & SS_DETECT) {
470                 reg |= I365_CSC_DETECT;
471         }
472         if (state->flags & SS_IOCARD) {
473                 if (state->csc_mask & SS_STSCHG)
474                         reg |= I365_CSC_STSCHG;
475         } else {
476                 if (state->csc_mask & SS_BATDEAD)
477                         reg |= I365_CSC_BVD1;
478                 if (state->csc_mask & SS_BATWARN)
479                         reg |= I365_CSC_BVD2;
480                 if (state->csc_mask & SS_READY)
481                         reg |= I365_CSC_READY;
482         }
483         if (irq_mode == 1)
484                 reg |= 0x30;    /* management IRQ: PCI INTA# = "irq 3" */
485         indirect_write(socket, I365_CSCINT, reg);
486
487         reg = indirect_read(socket, I365_INTCTL);
488         if (irq_mode == 1)
489                 reg |= 0x03;    /* card IRQ: PCI INTA# = "irq 3" */
490         else
491                 reg |= socket->card_irq;
492         indirect_write(socket, I365_INTCTL, reg);
493
494         /* now clear the (probably bogus) pending stuff by doing a dummy read */
495         (void)indirect_read(socket, I365_CSC);
496
497         return 0;
498 }
499
500 static int pd6729_set_io_map(struct pcmcia_socket *sock,
501                              struct pccard_io_map *io)
502 {
503         struct pd6729_socket *socket
504                         = container_of(sock, struct pd6729_socket, socket);
505         unsigned char map, ioctl;
506
507         map = io->map;
508
509         /* Check error conditions */
510         if (map > 1) {
511                 dprintk("pd6729_set_io_map with invalid map");
512                 return -EINVAL;
513         }
514
515         /* Turn off the window before changing anything */
516         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
517                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
518
519         /* dprintk("set_io_map: Setting range to %x - %x\n",
520            io->start, io->stop);*/
521
522         /* write the new values */
523         indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
524         indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
525
526         ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
527
528         if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
529         if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
530         if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
531
532         indirect_write(socket, I365_IOCTL, ioctl);
533
534         /* Turn the window back on if needed */
535         if (io->flags & MAP_ACTIVE)
536                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
537
538         return 0;
539 }
540
541 static int pd6729_set_mem_map(struct pcmcia_socket *sock,
542                               struct pccard_mem_map *mem)
543 {
544         struct pd6729_socket *socket
545                          = container_of(sock, struct pd6729_socket, socket);
546         unsigned short base, i;
547         unsigned char map;
548
549         map = mem->map;
550         if (map > 4) {
551                 printk("pd6729_set_mem_map: invalid map");
552                 return -EINVAL;
553         }
554
555         if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
556                 printk("pd6729_set_mem_map: invalid address / speed");
557                 return -EINVAL;
558         }
559
560         /* Turn off the window before changing anything */
561         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
562                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
563
564         /* write the start address */
565         base = I365_MEM(map);
566         i = (mem->res->start >> 12) & 0x0fff;
567         if (mem->flags & MAP_16BIT)
568                 i |= I365_MEM_16BIT;
569         if (mem->flags & MAP_0WS)
570                 i |= I365_MEM_0WS;
571         indirect_write16(socket, base + I365_W_START, i);
572
573         /* write the stop address */
574
575         i= (mem->res->end >> 12) & 0x0fff;
576         switch (to_cycles(mem->speed)) {
577         case 0:
578                 break;
579         case 1:
580                 i |= I365_MEM_WS0;
581                 break;
582         case 2:
583                 i |= I365_MEM_WS1;
584                 break;
585         default:
586                 i |= I365_MEM_WS1 | I365_MEM_WS0;
587                 break;
588         }
589
590         indirect_write16(socket, base + I365_W_STOP, i);
591
592         /* Take care of high byte */
593         indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
594         indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);
595
596         /* card start */
597
598         i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
599         if (mem->flags & MAP_WRPROT)
600                 i |= I365_MEM_WRPROT;
601         if (mem->flags & MAP_ATTRIB) {
602                 /* dprintk("requesting attribute memory for socket %i\n",
603                         socket->number);*/
604                 i |= I365_MEM_REG;
605         } else {
606                 /* dprintk("requesting normal memory for socket %i\n",
607                         socket->number);*/
608         }
609         indirect_write16(socket, base + I365_W_OFF, i);
610
611         /* Enable the window if necessary */
612         if (mem->flags & MAP_ACTIVE)
613                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
614
615         return 0;
616 }
617
618 static int pd6729_init(struct pcmcia_socket *sock)
619 {
620         int i;
621         struct resource res = { .end = 0x0fff };
622         pccard_io_map io = { 0, 0, 0, 0, 1 };
623         pccard_mem_map mem = { .res = &res, };
624
625         pd6729_set_socket(sock, &dead_socket);
626         for (i = 0; i < 2; i++) {
627                 io.map = i;
628                 pd6729_set_io_map(sock, &io);
629         }
630         for (i = 0; i < 5; i++) {
631                 mem.map = i;
632                 pd6729_set_mem_map(sock, &mem);
633         }
634
635         return 0;
636 }
637
638
639 /* the pccard structure and its functions */
640 static struct pccard_operations pd6729_operations = {
641         .init                   = pd6729_init,
642         .get_status             = pd6729_get_status,
643         .get_socket             = pd6729_get_socket,
644         .set_socket             = pd6729_set_socket,
645         .set_io_map             = pd6729_set_io_map,
646         .set_mem_map            = pd6729_set_mem_map,
647 };
648
649 static irqreturn_t pd6729_test(int irq, void *dev, struct pt_regs *regs)
650 {
651         dprintk("-> hit on irq %d\n", irq);
652         return IRQ_HANDLED;
653 }
654
655 static int pd6729_check_irq(int irq, int flags)
656 {
657         if (request_irq(irq, pd6729_test, flags, "x", pd6729_test) != 0)
658                 return -1;
659         free_irq(irq, pd6729_test);
660         return 0;
661 }
662
663 static u_int __init pd6729_isa_scan(void)
664 {
665         u_int mask0, mask = 0;
666         int i;
667
668         if (irq_mode == 1) {
669                 printk(KERN_INFO "pd6729: PCI card interrupts, "
670                                                 "PCI status changes\n");
671                 return 0;
672         }
673
674         if (irq_list_count == 0)
675                 mask0 = 0xffff;
676         else
677                 for (i = mask0 = 0; i < irq_list_count; i++)
678                         mask0 |= (1<<irq_list[i]);
679
680         mask0 &= PD67_MASK;
681
682         /* just find interrupts that aren't in use */
683         for (i = 0; i < 16; i++)
684                 if ((mask0 & (1 << i)) && (pd6729_check_irq(i, 0) == 0))
685                         mask |= (1 << i);
686
687         printk(KERN_INFO "pd6729: ISA irqs = ");
688         for (i = 0; i < 16; i++)
689                 if (mask & (1<<i))
690                         printk("%s%d", ((mask & ((1<<i)-1)) ? "," : ""), i);
691
692         if (mask == 0) printk("none!");
693
694         printk("  polling status changes.\n");
695
696         return mask;
697 }
698
699 static int __devinit pd6729_pci_probe(struct pci_dev *dev,
700                                       const struct pci_device_id *id)
701 {
702         int i, j, ret;
703         u_int mask;
704         char configbyte;
705         struct pd6729_socket *socket;
706
707         socket = kmalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS,
708                          GFP_KERNEL);
709         if (!socket)
710                 return -ENOMEM;
711
712         memset(socket, 0, sizeof(struct pd6729_socket) * MAX_SOCKETS);
713
714         if ((ret = pci_enable_device(dev)))
715                 goto err_out_free_mem;
716
717         printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge "
718                 "at 0x%lx on irq %d\n", pci_resource_start(dev, 0), dev->irq);
719         /*
720          * Since we have no memory BARs some firmware may not
721          * have had PCI_COMMAND_MEMORY enabled, yet the device needs it.
722          */
723         pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
724         if (!(configbyte & PCI_COMMAND_MEMORY)) {
725                 printk(KERN_DEBUG "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
726                 configbyte |= PCI_COMMAND_MEMORY;
727                 pci_write_config_byte(dev, PCI_COMMAND, configbyte);
728         }
729
730         ret = pci_request_regions(dev, "pd6729");
731         if (ret) {
732                 printk(KERN_INFO "pd6729: pci request region failed.\n");
733                 goto err_out_disable;
734         }
735
736         if (dev->irq == NO_IRQ)
737                 irq_mode = 0;   /* fall back to ISA interrupt mode */
738
739         mask = pd6729_isa_scan();
740         if (irq_mode == 0 && mask == 0) {
741                 printk(KERN_INFO "pd6729: no ISA interrupt is available.\n");
742                 goto err_out_free_res;
743         }
744
745         for (i = 0; i < MAX_SOCKETS; i++) {
746                 socket[i].io_base = pci_resource_start(dev, 0);
747                 socket[i].socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
748                 socket[i].socket.map_size = 0x1000;
749                 socket[i].socket.irq_mask = mask;
750                 socket[i].socket.pci_irq  = dev->irq;
751                 socket[i].socket.owner = THIS_MODULE;
752
753                 socket[i].number = i;
754
755                 socket[i].socket.ops = &pd6729_operations;
756                 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
757                 socket[i].socket.dev.dev = &dev->dev;
758                 socket[i].socket.driver_data = &socket[i];
759         }
760
761         pci_set_drvdata(dev, socket);
762         if (irq_mode == 1) {
763                 /* Register the interrupt handler */
764                 if ((ret = request_irq(dev->irq, pd6729_interrupt, SA_SHIRQ,
765                                                         "pd6729", socket))) {
766                         printk(KERN_ERR "pd6729: Failed to register irq %d, "
767                                                         "aborting\n", dev->irq);
768                         goto err_out_free_res;
769                 }
770         } else {
771                 /* poll Card status change */
772                 init_timer(&socket->poll_timer);
773                 socket->poll_timer.function = pd6729_interrupt_wrapper;
774                 socket->poll_timer.data = (unsigned long)socket;
775                 socket->poll_timer.expires = jiffies + HZ;
776                 add_timer(&socket->poll_timer);
777         }
778
779         for (i = 0; i < MAX_SOCKETS; i++) {
780                 ret = pcmcia_register_socket(&socket[i].socket);
781                 if (ret) {
782                         printk(KERN_INFO "pd6729: pcmcia_register_socket "
783                                                "failed.\n");
784                         for (j = 0; j < i ; j++)
785                                 pcmcia_unregister_socket(&socket[j].socket);
786                         goto err_out_free_res2;
787                 }
788         }
789
790         return 0;
791
792  err_out_free_res2:
793         if (irq_mode == 1)
794                 free_irq(dev->irq, socket);
795         else
796                 del_timer_sync(&socket->poll_timer);
797  err_out_free_res:
798         pci_release_regions(dev);
799  err_out_disable:
800         pci_disable_device(dev);
801
802  err_out_free_mem:
803         kfree(socket);
804         return ret;
805 }
806
807 static void __devexit pd6729_pci_remove(struct pci_dev *dev)
808 {
809         int i;
810         struct pd6729_socket *socket = pci_get_drvdata(dev);
811
812         for (i = 0; i < MAX_SOCKETS; i++) {
813                 /* Turn off all interrupt sources */
814                 indirect_write(&socket[i], I365_CSCINT, 0);
815                 indirect_write(&socket[i], I365_INTCTL, 0);
816
817                 pcmcia_unregister_socket(&socket[i].socket);
818         }
819
820         if (irq_mode == 1)
821                 free_irq(dev->irq, socket);
822         else
823                 del_timer_sync(&socket->poll_timer);
824         pci_release_regions(dev);
825         pci_disable_device(dev);
826
827         kfree(socket);
828 }
829
830 static int pd6729_socket_suspend(struct pci_dev *dev, pm_message_t state)
831 {
832         return pcmcia_socket_dev_suspend(&dev->dev, state);
833 }
834
835 static int pd6729_socket_resume(struct pci_dev *dev)
836 {
837         return pcmcia_socket_dev_resume(&dev->dev);
838 }
839
840 static struct pci_device_id pd6729_pci_ids[] = {
841         {
842                 .vendor         = PCI_VENDOR_ID_CIRRUS,
843                 .device         = PCI_DEVICE_ID_CIRRUS_6729,
844                 .subvendor      = PCI_ANY_ID,
845                 .subdevice      = PCI_ANY_ID,
846         },
847         { }
848 };
849 MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
850
851 static struct pci_driver pd6729_pci_drv = {
852         .name           = "pd6729",
853         .id_table       = pd6729_pci_ids,
854         .probe          = pd6729_pci_probe,
855         .remove         = __devexit_p(pd6729_pci_remove),
856         .suspend        = pd6729_socket_suspend,
857         .resume         = pd6729_socket_resume,
858 };
859
860 static int pd6729_module_init(void)
861 {
862         return pci_register_driver(&pd6729_pci_drv);
863 }
864
865 static void pd6729_module_exit(void)
866 {
867         pci_unregister_driver(&pd6729_pci_drv);
868 }
869
870 module_init(pd6729_module_init);
871 module_exit(pd6729_module_exit);