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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / pcmcia / pd6729.c
blob20642f0e7bfe85f1b252099e18420d48a0b7c1b4
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);
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