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SCSI: mpt2sas: _scsih_smart_predicted_fault uses GFP_KERNEL in interrupt context
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / pcmcia / soc_common.c
blobef7e9e58782b2328c66ab14d4b563656ee3a84a2
1 /*======================================================================
2
3 Common support code for the PCMCIA control functionality of
4 integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
5
6 The contents of this file are subject to the Mozilla Public
7 License Version 1.1 (the "License"); you may not use this file
8 except in compliance with the License. You may obtain a copy of
9 the License at http://www.mozilla.org/MPL/
10
11 Software distributed under the License is distributed on an "AS
12 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
13 implied. See the License for the specific language governing
14 rights and limitations under the License.
15
16 The initial developer of the original code is John G. Dorsey
17 <john+@cs.cmu.edu>. Portions created by John G. Dorsey are
18 Copyright (C) 1999 John G. Dorsey. All Rights Reserved.
19
20 Alternatively, the contents of this file may be used under the
21 terms of the GNU Public License version 2 (the "GPL"), in which
22 case the provisions of the GPL are applicable instead of the
23 above. If you wish to allow the use of your version of this file
24 only under the terms of the GPL and not to allow others to use
25 your version of this file under the MPL, indicate your decision
26 by deleting the provisions above and replace them with the notice
27 and other provisions required by the GPL. If you do not delete
28 the provisions above, a recipient may use your version of this
29 file under either the MPL or the GPL.
30
31 ======================================================================*/
32
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/init.h>
37 #include <linux/kernel.h>
38 #include <linux/timer.h>
39 #include <linux/mm.h>
40 #include <linux/mutex.h>
41 #include <linux/interrupt.h>
42 #include <linux/irq.h>
43 #include <linux/spinlock.h>
44 #include <linux/cpufreq.h>
45
46 #include <mach/hardware.h>
47 #include <asm/io.h>
48 #include <asm/system.h>
49
50 #include "soc_common.h"
51
52 #ifdef CONFIG_PCMCIA_DEBUG
53
54 static int pc_debug;
55 module_param(pc_debug, int, 0644);
56
57 void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
58 int lvl, const char *fmt, ...)
59 {
60 va_list args;
61 if (pc_debug > lvl) {
62 printk(KERN_DEBUG "skt%u: %s: ", skt->nr, func);
63 va_start(args, fmt);
64 vprintk(fmt, args);
65 va_end(args);
66 }
67 }
68
69 #endif
70
71 #define to_soc_pcmcia_socket(x) container_of(x, struct soc_pcmcia_socket, socket)
72
73 static unsigned short
74 calc_speed(unsigned short *spds, int num, unsigned short dflt)
75 {
76 unsigned short speed = 0;
77 int i;
78
79 for (i = 0; i < num; i++)
80 if (speed < spds[i])
81 speed = spds[i];
82 if (speed == 0)
83 speed = dflt;
84
85 return speed;
86 }
87
88 void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing)
89 {
90 timing->io = calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS);
91 timing->mem = calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
92 timing->attr = calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
93 }
94 EXPORT_SYMBOL(soc_common_pcmcia_get_timing);
95
96 static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
97 {
98 struct pcmcia_state state;
99 unsigned int stat;
100
101 memset(&state, 0, sizeof(struct pcmcia_state));
102
103 skt->ops->socket_state(skt, &state);
104
105 stat = state.detect ? SS_DETECT : 0;
106 stat |= state.ready ? SS_READY : 0;
107 stat |= state.wrprot ? SS_WRPROT : 0;
108 stat |= state.vs_3v ? SS_3VCARD : 0;
109 stat |= state.vs_Xv ? SS_XVCARD : 0;
110
111 /* The power status of individual sockets is not available
112 * explicitly from the hardware, so we just remember the state
113 * and regurgitate it upon request:
114 */
115 stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
116
117 if (skt->cs_state.flags & SS_IOCARD)
118 stat |= state.bvd1 ? SS_STSCHG : 0;
119 else {
120 if (state.bvd1 == 0)
121 stat |= SS_BATDEAD;
122 else if (state.bvd2 == 0)
123 stat |= SS_BATWARN;
124 }
125 return stat;
126 }
127
128 /*
129 * soc_common_pcmcia_config_skt
130 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
131 *
132 * Convert PCMCIA socket state to our socket configure structure.
133 */
134 static int
135 soc_common_pcmcia_config_skt(struct soc_pcmcia_socket *skt, socket_state_t *state)
136 {
137 int ret;
138
139 ret = skt->ops->configure_socket(skt, state);
140 if (ret == 0) {
141 /*
142 * This really needs a better solution. The IRQ
143 * may or may not be claimed by the driver.
144 */
145 if (skt->irq_state != 1 && state->io_irq) {
146 skt->irq_state = 1;
147 set_irq_type(skt->irq, IRQ_TYPE_EDGE_FALLING);
148 } else if (skt->irq_state == 1 && state->io_irq == 0) {
149 skt->irq_state = 0;
150 set_irq_type(skt->irq, IRQ_TYPE_NONE);
151 }
152
153 skt->cs_state = *state;
154 }
155
156 if (ret < 0)
157 printk(KERN_ERR "soc_common_pcmcia: unable to configure "
158 "socket %d\n", skt->nr);
159
160 return ret;
161 }
162
163 /* soc_common_pcmcia_sock_init()
164 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
165 *
166 * (Re-)Initialise the socket, turning on status interrupts
167 * and PCMCIA bus. This must wait for power to stabilise
168 * so that the card status signals report correctly.
169 *
170 * Returns: 0
171 */
172 static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
173 {
174 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
175
176 debug(skt, 2, "initializing socket\n");
177
178 skt->ops->socket_init(skt);
179 return 0;
180 }
181
182
183 /*
184 * soc_common_pcmcia_suspend()
185 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
186 *
187 * Remove power on the socket, disable IRQs from the card.
188 * Turn off status interrupts, and disable the PCMCIA bus.
189 *
190 * Returns: 0
191 */
192 static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
193 {
194 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
195
196 debug(skt, 2, "suspending socket\n");
197
198 skt->ops->socket_suspend(skt);
199
200 return 0;
201 }
202
203 static DEFINE_SPINLOCK(status_lock);
204
205 static void soc_common_check_status(struct soc_pcmcia_socket *skt)
206 {
207 unsigned int events;
208
209 debug(skt, 4, "entering PCMCIA monitoring thread\n");
210
211 do {
212 unsigned int status;
213 unsigned long flags;
214
215 status = soc_common_pcmcia_skt_state(skt);
216
217 spin_lock_irqsave(&status_lock, flags);
218 events = (status ^ skt->status) & skt->cs_state.csc_mask;
219 skt->status = status;
220 spin_unlock_irqrestore(&status_lock, flags);
221
222 debug(skt, 4, "events: %s%s%s%s%s%s\n",
223 events == 0 ? "<NONE>" : "",
224 events & SS_DETECT ? "DETECT " : "",
225 events & SS_READY ? "READY " : "",
226 events & SS_BATDEAD ? "BATDEAD " : "",
227 events & SS_BATWARN ? "BATWARN " : "",
228 events & SS_STSCHG ? "STSCHG " : "");
229
230 if (events)
231 pcmcia_parse_events(&skt->socket, events);
232 } while (events);
233 }
234
235 /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */
236 static void soc_common_pcmcia_poll_event(unsigned long dummy)
237 {
238 struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy;
239 debug(skt, 4, "polling for events\n");
240
241 mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
242
243 soc_common_check_status(skt);
244 }
245
246
247 /*
248 * Service routine for socket driver interrupts (requested by the
249 * low-level PCMCIA init() operation via soc_common_pcmcia_thread()).
250 * The actual interrupt-servicing work is performed by
251 * soc_common_pcmcia_thread(), largely because the Card Services event-
252 * handling code performs scheduling operations which cannot be
253 * executed from within an interrupt context.
254 */
255 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev)
256 {
257 struct soc_pcmcia_socket *skt = dev;
258
259 debug(skt, 3, "servicing IRQ %d\n", irq);
260
261 soc_common_check_status(skt);
262
263 return IRQ_HANDLED;
264 }
265
266
267 /*
268 * Implements the get_status() operation for the in-kernel PCMCIA
269 * service (formerly SS_GetStatus in Card Services). Essentially just
270 * fills in bits in `status' according to internal driver state or
271 * the value of the voltage detect chipselect register.
272 *
273 * As a debugging note, during card startup, the PCMCIA core issues
274 * three set_socket() commands in a row the first with RESET deasserted,
275 * the second with RESET asserted, and the last with RESET deasserted
276 * again. Following the third set_socket(), a get_status() command will
277 * be issued. The kernel is looking for the SS_READY flag (see
278 * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
279 *
280 * Returns: 0
281 */
282 static int
283 soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
284 {
285 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
286
287 skt->status = soc_common_pcmcia_skt_state(skt);
288 *status = skt->status;
289
290 return 0;
291 }
292
293
294 /*
295 * Implements the set_socket() operation for the in-kernel PCMCIA
296 * service (formerly SS_SetSocket in Card Services). We more or
297 * less punt all of this work and let the kernel handle the details
298 * of power configuration, reset, &c. We also record the value of
299 * `state' in order to regurgitate it to the PCMCIA core later.
300 */
301 static int
302 soc_common_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
303 {
304 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
305
306 debug(skt, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n",
307 (state->csc_mask==0)?"<NONE> ":"",
308 (state->csc_mask&SS_DETECT)?"DETECT ":"",
309 (state->csc_mask&SS_READY)?"READY ":"",
310 (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
311 (state->csc_mask&SS_BATWARN)?"BATWARN ":"",
312 (state->csc_mask&SS_STSCHG)?"STSCHG ":"",
313 (state->flags==0)?"<NONE> ":"",
314 (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
315 (state->flags&SS_IOCARD)?"IOCARD ":"",
316 (state->flags&SS_RESET)?"RESET ":"",
317 (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
318 (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"",
319 state->Vcc, state->Vpp, state->io_irq);
320
321 return soc_common_pcmcia_config_skt(skt, state);
322 }
323
324
325 /*
326 * Implements the set_io_map() operation for the in-kernel PCMCIA
327 * service (formerly SS_SetIOMap in Card Services). We configure
328 * the map speed as requested, but override the address ranges
329 * supplied by Card Services.
330 *
331 * Returns: 0 on success, -1 on error
332 */
333 static int
334 soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map)
335 {
336 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
337 unsigned short speed = map->speed;
338
339 debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n",
340 map->map, map->speed, (unsigned long long)map->start,
341 (unsigned long long)map->stop);
342 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
343 (map->flags==0)?"<NONE>":"",
344 (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
345 (map->flags&MAP_16BIT)?"16BIT ":"",
346 (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
347 (map->flags&MAP_0WS)?"0WS ":"",
348 (map->flags&MAP_WRPROT)?"WRPROT ":"",
349 (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"",
350 (map->flags&MAP_PREFETCH)?"PREFETCH ":"");
351
352 if (map->map >= MAX_IO_WIN) {
353 printk(KERN_ERR "%s(): map (%d) out of range\n", __func__,
354 map->map);
355 return -1;
356 }
357
358 if (map->flags & MAP_ACTIVE) {
359 if (speed == 0)
360 speed = SOC_PCMCIA_IO_ACCESS;
361 } else {
362 speed = 0;
363 }
364
365 skt->spd_io[map->map] = speed;
366 skt->ops->set_timing(skt);
367
368 if (map->stop == 1)
369 map->stop = PAGE_SIZE-1;
370
371 map->stop -= map->start;
372 map->stop += skt->socket.io_offset;
373 map->start = skt->socket.io_offset;
374
375 return 0;
376 }
377
378
379 /*
380 * Implements the set_mem_map() operation for the in-kernel PCMCIA
381 * service (formerly SS_SetMemMap in Card Services). We configure
382 * the map speed as requested, but override the address ranges
383 * supplied by Card Services.
384 *
385 * Returns: 0 on success, -ERRNO on error
386 */
387 static int
388 soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
389 {
390 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
391 struct resource *res;
392 unsigned short speed = map->speed;
393
394 debug(skt, 2, "map %u speed %u card_start %08x\n",
395 map->map, map->speed, map->card_start);
396 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
397 (map->flags==0)?"<NONE>":"",
398 (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
399 (map->flags&MAP_16BIT)?"16BIT ":"",
400 (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
401 (map->flags&MAP_0WS)?"0WS ":"",
402 (map->flags&MAP_WRPROT)?"WRPROT ":"",
403 (map->flags&MAP_ATTRIB)?"ATTRIB ":"",
404 (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"");
405
406 if (map->map >= MAX_WIN)
407 return -EINVAL;
408
409 if (map->flags & MAP_ACTIVE) {
410 if (speed == 0)
411 speed = 300;
412 } else {
413 speed = 0;
414 }
415
416 if (map->flags & MAP_ATTRIB) {
417 res = &skt->res_attr;
418 skt->spd_attr[map->map] = speed;
419 skt->spd_mem[map->map] = 0;
420 } else {
421 res = &skt->res_mem;
422 skt->spd_attr[map->map] = 0;
423 skt->spd_mem[map->map] = speed;
424 }
425
426 skt->ops->set_timing(skt);
427
428 map->static_start = res->start + map->card_start;
429
430 return 0;
431 }
432
433 struct bittbl {
434 unsigned int mask;
435 const char *name;
436 };
437
438 static struct bittbl status_bits[] = {
439 { SS_WRPROT, "SS_WRPROT" },
440 { SS_BATDEAD, "SS_BATDEAD" },
441 { SS_BATWARN, "SS_BATWARN" },
442 { SS_READY, "SS_READY" },
443 { SS_DETECT, "SS_DETECT" },
444 { SS_POWERON, "SS_POWERON" },
445 { SS_STSCHG, "SS_STSCHG" },
446 { SS_3VCARD, "SS_3VCARD" },
447 { SS_XVCARD, "SS_XVCARD" },
448 };
449
450 static struct bittbl conf_bits[] = {
451 { SS_PWR_AUTO, "SS_PWR_AUTO" },
452 { SS_IOCARD, "SS_IOCARD" },
453 { SS_RESET, "SS_RESET" },
454 { SS_DMA_MODE, "SS_DMA_MODE" },
455 { SS_SPKR_ENA, "SS_SPKR_ENA" },
456 { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
457 };
458
459 static void
460 dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz)
461 {
462 char *b = *p;
463 int i;
464
465 b += sprintf(b, "%-9s:", prefix);
466 for (i = 0; i < sz; i++)
467 if (val & bits[i].mask)
468 b += sprintf(b, " %s", bits[i].name);
469 *b++ = '\n';
470 *p = b;
471 }
472
473 /*
474 * Implements the /sys/class/pcmcia_socket/??/status file.
475 *
476 * Returns: the number of characters added to the buffer
477 */
478 static ssize_t show_status(struct device *dev, struct device_attribute *attr, char *buf)
479 {
480 struct soc_pcmcia_socket *skt =
481 container_of(dev, struct soc_pcmcia_socket, socket.dev);
482 char *p = buf;
483
484 p+=sprintf(p, "slot : %d\n", skt->nr);
485
486 dump_bits(&p, "status", skt->status,
487 status_bits, ARRAY_SIZE(status_bits));
488 dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
489 status_bits, ARRAY_SIZE(status_bits));
490 dump_bits(&p, "cs_flags", skt->cs_state.flags,
491 conf_bits, ARRAY_SIZE(conf_bits));
492
493 p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
494 p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
495 p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq);
496 if (skt->ops->show_timing)
497 p+=skt->ops->show_timing(skt, p);
498
499 return p-buf;
500 }
501 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
502
503
504 static struct pccard_operations soc_common_pcmcia_operations = {
505 .init = soc_common_pcmcia_sock_init,
506 .suspend = soc_common_pcmcia_suspend,
507 .get_status = soc_common_pcmcia_get_status,
508 .set_socket = soc_common_pcmcia_set_socket,
509 .set_io_map = soc_common_pcmcia_set_io_map,
510 .set_mem_map = soc_common_pcmcia_set_mem_map,
511 };
512
513
514 int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt,
515 struct pcmcia_irqs *irqs, int nr)
516 {
517 int i, res = 0;
518
519 for (i = 0; i < nr; i++) {
520 if (irqs[i].sock != skt->nr)
521 continue;
522 res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt,
523 IRQF_DISABLED, irqs[i].str, skt);
524 if (res)
525 break;
526 set_irq_type(irqs[i].irq, IRQ_TYPE_NONE);
527 }
528
529 if (res) {
530 printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n",
531 irqs[i].irq, res);
532
533 while (i--)
534 if (irqs[i].sock == skt->nr)
535 free_irq(irqs[i].irq, skt);
536 }
537 return res;
538 }
539 EXPORT_SYMBOL(soc_pcmcia_request_irqs);
540
541 void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt,
542 struct pcmcia_irqs *irqs, int nr)
543 {
544 int i;
545
546 for (i = 0; i < nr; i++)
547 if (irqs[i].sock == skt->nr)
548 free_irq(irqs[i].irq, skt);
549 }
550 EXPORT_SYMBOL(soc_pcmcia_free_irqs);
551
552 void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt,
553 struct pcmcia_irqs *irqs, int nr)
554 {
555 int i;
556
557 for (i = 0; i < nr; i++)
558 if (irqs[i].sock == skt->nr)
559 set_irq_type(irqs[i].irq, IRQ_TYPE_NONE);
560 }
561 EXPORT_SYMBOL(soc_pcmcia_disable_irqs);
562
563 void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt,
564 struct pcmcia_irqs *irqs, int nr)
565 {
566 int i;
567
568 for (i = 0; i < nr; i++)
569 if (irqs[i].sock == skt->nr) {
570 set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_RISING);
571 set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_BOTH);
572 }
573 }
574 EXPORT_SYMBOL(soc_pcmcia_enable_irqs);
575
576
577 LIST_HEAD(soc_pcmcia_sockets);
578 static DEFINE_MUTEX(soc_pcmcia_sockets_lock);
579
580 #ifdef CONFIG_CPU_FREQ
581 static int
582 soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data)
583 {
584 struct soc_pcmcia_socket *skt;
585 struct cpufreq_freqs *freqs = data;
586 int ret = 0;
587
588 mutex_lock(&soc_pcmcia_sockets_lock);
589 list_for_each_entry(skt, &soc_pcmcia_sockets, node)
590 if ( skt->ops->frequency_change )
591 ret += skt->ops->frequency_change(skt, val, freqs);
592 mutex_unlock(&soc_pcmcia_sockets_lock);
593
594 return ret;
595 }
596
597 static struct notifier_block soc_pcmcia_notifier_block = {
598 .notifier_call = soc_pcmcia_notifier
599 };
600
601 static int soc_pcmcia_cpufreq_register(void)
602 {
603 int ret;
604
605 ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block,
606 CPUFREQ_TRANSITION_NOTIFIER);
607 if (ret < 0)
608 printk(KERN_ERR "Unable to register CPU frequency change "
609 "notifier for PCMCIA (%d)\n", ret);
610 return ret;
611 }
612
613 static void soc_pcmcia_cpufreq_unregister(void)
614 {
615 cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER);
616 }
617
618 #else
619 static int soc_pcmcia_cpufreq_register(void) { return 0; }
620 static void soc_pcmcia_cpufreq_unregister(void) {}
621 #endif
622
623 int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
624 struct skt_dev_info *sinfo)
625 {
626 struct soc_pcmcia_socket *skt;
627 int ret, i;
628
629 mutex_lock(&soc_pcmcia_sockets_lock);
630
631 /*
632 * Initialise the per-socket structure.
633 */
634 for (i = 0; i < sinfo->nskt; i++) {
635 skt = &sinfo->skt[i];
636
637 skt->socket.ops = &soc_common_pcmcia_operations;
638 skt->socket.owner = ops->owner;
639 skt->socket.dev.parent = dev;
640
641 init_timer(&skt->poll_timer);
642 skt->poll_timer.function = soc_common_pcmcia_poll_event;
643 skt->poll_timer.data = (unsigned long)skt;
644 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
645
646 skt->dev = dev;
647 skt->ops = ops;
648
649 ret = request_resource(&iomem_resource, &skt->res_skt);
650 if (ret)
651 goto out_err_1;
652
653 ret = request_resource(&skt->res_skt, &skt->res_io);
654 if (ret)
655 goto out_err_2;
656
657 ret = request_resource(&skt->res_skt, &skt->res_mem);
658 if (ret)
659 goto out_err_3;
660
661 ret = request_resource(&skt->res_skt, &skt->res_attr);
662 if (ret)
663 goto out_err_4;
664
665 skt->virt_io = ioremap(skt->res_io.start, 0x10000);
666 if (skt->virt_io == NULL) {
667 ret = -ENOMEM;
668 goto out_err_5;
669 }
670
671 if (list_empty(&soc_pcmcia_sockets))
672 soc_pcmcia_cpufreq_register();
673
674 list_add(&skt->node, &soc_pcmcia_sockets);
675
676 /*
677 * We initialize default socket timing here, because
678 * we are not guaranteed to see a SetIOMap operation at
679 * runtime.
680 */
681 ops->set_timing(skt);
682
683 ret = ops->hw_init(skt);
684 if (ret)
685 goto out_err_6;
686
687 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
688 skt->socket.resource_ops = &pccard_static_ops;
689 skt->socket.irq_mask = 0;
690 skt->socket.map_size = PAGE_SIZE;
691 skt->socket.pci_irq = skt->irq;
692 skt->socket.io_offset = (unsigned long)skt->virt_io;
693
694 skt->status = soc_common_pcmcia_skt_state(skt);
695
696 ret = pcmcia_register_socket(&skt->socket);
697 if (ret)
698 goto out_err_7;
699
700 WARN_ON(skt->socket.sock != i);
701
702 add_timer(&skt->poll_timer);
703
704 ret = device_create_file(&skt->socket.dev, &dev_attr_status);
705 if (ret)
706 goto out_err_8;
707 }
708
709 dev_set_drvdata(dev, sinfo);
710 ret = 0;
711 goto out;
712
713 do {
714 skt = &sinfo->skt[i];
715
716 device_remove_file(&skt->socket.dev, &dev_attr_status);
717 out_err_8:
718 del_timer_sync(&skt->poll_timer);
719 pcmcia_unregister_socket(&skt->socket);
720
721 out_err_7:
722 flush_scheduled_work();
723
724 ops->hw_shutdown(skt);
725 out_err_6:
726 list_del(&skt->node);
727 iounmap(skt->virt_io);
728 out_err_5:
729 release_resource(&skt->res_attr);
730 out_err_4:
731 release_resource(&skt->res_mem);
732 out_err_3:
733 release_resource(&skt->res_io);
734 out_err_2:
735 release_resource(&skt->res_skt);
736 out_err_1:
737 i--;
738 } while (i > 0);
739
740 kfree(sinfo);
741
742 out:
743 mutex_unlock(&soc_pcmcia_sockets_lock);
744 return ret;
745 }
746
747 int soc_common_drv_pcmcia_remove(struct device *dev)
748 {
749 struct skt_dev_info *sinfo = dev_get_drvdata(dev);
750 int i;
751
752 dev_set_drvdata(dev, NULL);
753
754 mutex_lock(&soc_pcmcia_sockets_lock);
755 for (i = 0; i < sinfo->nskt; i++) {
756 struct soc_pcmcia_socket *skt = &sinfo->skt[i];
757
758 del_timer_sync(&skt->poll_timer);
759
760 pcmcia_unregister_socket(&skt->socket);
761
762 flush_scheduled_work();
763
764 skt->ops->hw_shutdown(skt);
765
766 soc_common_pcmcia_config_skt(skt, &dead_socket);
767
768 list_del(&skt->node);
769 iounmap(skt->virt_io);
770 skt->virt_io = NULL;
771 release_resource(&skt->res_attr);
772 release_resource(&skt->res_mem);
773 release_resource(&skt->res_io);
774 release_resource(&skt->res_skt);
775 }
776 if (list_empty(&soc_pcmcia_sockets))
777 soc_pcmcia_cpufreq_unregister();
778
779 mutex_unlock(&soc_pcmcia_sockets_lock);
780
781 kfree(sinfo);
782
783 return 0;
784 }
785 EXPORT_SYMBOL(soc_common_drv_pcmcia_remove);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree