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1da177e4 LT |
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 | ||
1da177e4 LT |
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/interrupt.h> | |
ff632054 | 41 | #include <linux/irq.h> |
1da177e4 LT |
42 | #include <linux/spinlock.h> |
43 | #include <linux/cpufreq.h> | |
44 | ||
45 | #include <asm/hardware.h> | |
46 | #include <asm/io.h> | |
1da177e4 LT |
47 | #include <asm/system.h> |
48 | ||
49 | #include "soc_common.h" | |
50 | ||
51 | /* FIXME: platform dependent resource declaration has to move out of this file */ | |
52 | #ifdef CONFIG_ARCH_PXA | |
53 | #include <asm/arch/pxa-regs.h> | |
54 | #endif | |
55 | ||
56 | #ifdef DEBUG | |
57 | ||
58 | static int pc_debug; | |
59 | module_param(pc_debug, int, 0644); | |
60 | ||
61 | void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, | |
62 | int lvl, const char *fmt, ...) | |
63 | { | |
64 | va_list args; | |
65 | if (pc_debug > lvl) { | |
66 | printk(KERN_DEBUG "skt%u: %s: ", skt->nr, func); | |
67 | va_start(args, fmt); | |
4846d017 | 68 | vprintk(fmt, args); |
1da177e4 LT |
69 | va_end(args); |
70 | } | |
71 | } | |
72 | ||
73 | #endif | |
74 | ||
75 | #define to_soc_pcmcia_socket(x) container_of(x, struct soc_pcmcia_socket, socket) | |
76 | ||
77 | static unsigned short | |
78 | calc_speed(unsigned short *spds, int num, unsigned short dflt) | |
79 | { | |
80 | unsigned short speed = 0; | |
81 | int i; | |
82 | ||
83 | for (i = 0; i < num; i++) | |
84 | if (speed < spds[i]) | |
85 | speed = spds[i]; | |
86 | if (speed == 0) | |
87 | speed = dflt; | |
88 | ||
89 | return speed; | |
90 | } | |
91 | ||
92 | void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing) | |
93 | { | |
94 | timing->io = calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS); | |
95 | timing->mem = calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
96 | timing->attr = calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
97 | } | |
98 | EXPORT_SYMBOL(soc_common_pcmcia_get_timing); | |
99 | ||
100 | static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) | |
101 | { | |
102 | struct pcmcia_state state; | |
103 | unsigned int stat; | |
104 | ||
105 | memset(&state, 0, sizeof(struct pcmcia_state)); | |
106 | ||
107 | skt->ops->socket_state(skt, &state); | |
108 | ||
109 | stat = state.detect ? SS_DETECT : 0; | |
110 | stat |= state.ready ? SS_READY : 0; | |
111 | stat |= state.wrprot ? SS_WRPROT : 0; | |
112 | stat |= state.vs_3v ? SS_3VCARD : 0; | |
113 | stat |= state.vs_Xv ? SS_XVCARD : 0; | |
114 | ||
115 | /* The power status of individual sockets is not available | |
116 | * explicitly from the hardware, so we just remember the state | |
117 | * and regurgitate it upon request: | |
118 | */ | |
119 | stat |= skt->cs_state.Vcc ? SS_POWERON : 0; | |
120 | ||
121 | if (skt->cs_state.flags & SS_IOCARD) | |
122 | stat |= state.bvd1 ? SS_STSCHG : 0; | |
123 | else { | |
124 | if (state.bvd1 == 0) | |
125 | stat |= SS_BATDEAD; | |
126 | else if (state.bvd2 == 0) | |
127 | stat |= SS_BATWARN; | |
128 | } | |
129 | return stat; | |
130 | } | |
131 | ||
132 | /* | |
133 | * soc_common_pcmcia_config_skt | |
134 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
135 | * | |
136 | * Convert PCMCIA socket state to our socket configure structure. | |
137 | */ | |
138 | static int | |
139 | soc_common_pcmcia_config_skt(struct soc_pcmcia_socket *skt, socket_state_t *state) | |
140 | { | |
141 | int ret; | |
142 | ||
143 | ret = skt->ops->configure_socket(skt, state); | |
144 | if (ret == 0) { | |
145 | /* | |
146 | * This really needs a better solution. The IRQ | |
147 | * may or may not be claimed by the driver. | |
148 | */ | |
149 | if (skt->irq_state != 1 && state->io_irq) { | |
150 | skt->irq_state = 1; | |
151 | set_irq_type(skt->irq, IRQT_FALLING); | |
152 | } else if (skt->irq_state == 1 && state->io_irq == 0) { | |
153 | skt->irq_state = 0; | |
154 | set_irq_type(skt->irq, IRQT_NOEDGE); | |
155 | } | |
156 | ||
157 | skt->cs_state = *state; | |
158 | } | |
159 | ||
160 | if (ret < 0) | |
161 | printk(KERN_ERR "soc_common_pcmcia: unable to configure " | |
162 | "socket %d\n", skt->nr); | |
163 | ||
164 | return ret; | |
165 | } | |
166 | ||
167 | /* soc_common_pcmcia_sock_init() | |
168 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
169 | * | |
170 | * (Re-)Initialise the socket, turning on status interrupts | |
171 | * and PCMCIA bus. This must wait for power to stabilise | |
172 | * so that the card status signals report correctly. | |
173 | * | |
174 | * Returns: 0 | |
175 | */ | |
176 | static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock) | |
177 | { | |
178 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
179 | ||
180 | debug(skt, 2, "initializing socket\n"); | |
181 | ||
182 | skt->ops->socket_init(skt); | |
183 | return 0; | |
184 | } | |
185 | ||
186 | ||
187 | /* | |
188 | * soc_common_pcmcia_suspend() | |
189 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
190 | * | |
191 | * Remove power on the socket, disable IRQs from the card. | |
192 | * Turn off status interrupts, and disable the PCMCIA bus. | |
193 | * | |
194 | * Returns: 0 | |
195 | */ | |
196 | static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock) | |
197 | { | |
198 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
199 | ||
200 | debug(skt, 2, "suspending socket\n"); | |
201 | ||
202 | skt->ops->socket_suspend(skt); | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | static DEFINE_SPINLOCK(status_lock); | |
208 | ||
209 | static void soc_common_check_status(struct soc_pcmcia_socket *skt) | |
210 | { | |
211 | unsigned int events; | |
212 | ||
213 | debug(skt, 4, "entering PCMCIA monitoring thread\n"); | |
214 | ||
215 | do { | |
216 | unsigned int status; | |
217 | unsigned long flags; | |
218 | ||
219 | status = soc_common_pcmcia_skt_state(skt); | |
220 | ||
221 | spin_lock_irqsave(&status_lock, flags); | |
222 | events = (status ^ skt->status) & skt->cs_state.csc_mask; | |
223 | skt->status = status; | |
224 | spin_unlock_irqrestore(&status_lock, flags); | |
225 | ||
226 | debug(skt, 4, "events: %s%s%s%s%s%s\n", | |
227 | events == 0 ? "<NONE>" : "", | |
228 | events & SS_DETECT ? "DETECT " : "", | |
229 | events & SS_READY ? "READY " : "", | |
230 | events & SS_BATDEAD ? "BATDEAD " : "", | |
231 | events & SS_BATWARN ? "BATWARN " : "", | |
232 | events & SS_STSCHG ? "STSCHG " : ""); | |
233 | ||
234 | if (events) | |
235 | pcmcia_parse_events(&skt->socket, events); | |
236 | } while (events); | |
237 | } | |
238 | ||
239 | /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */ | |
240 | static void soc_common_pcmcia_poll_event(unsigned long dummy) | |
241 | { | |
242 | struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy; | |
243 | debug(skt, 4, "polling for events\n"); | |
244 | ||
245 | mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD); | |
246 | ||
247 | soc_common_check_status(skt); | |
248 | } | |
249 | ||
250 | ||
251 | /* | |
252 | * Service routine for socket driver interrupts (requested by the | |
253 | * low-level PCMCIA init() operation via soc_common_pcmcia_thread()). | |
254 | * The actual interrupt-servicing work is performed by | |
255 | * soc_common_pcmcia_thread(), largely because the Card Services event- | |
256 | * handling code performs scheduling operations which cannot be | |
257 | * executed from within an interrupt context. | |
258 | */ | |
7d12e780 | 259 | static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev) |
1da177e4 LT |
260 | { |
261 | struct soc_pcmcia_socket *skt = dev; | |
262 | ||
263 | debug(skt, 3, "servicing IRQ %d\n", irq); | |
264 | ||
265 | soc_common_check_status(skt); | |
266 | ||
267 | return IRQ_HANDLED; | |
268 | } | |
269 | ||
270 | ||
271 | /* | |
272 | * Implements the get_status() operation for the in-kernel PCMCIA | |
273 | * service (formerly SS_GetStatus in Card Services). Essentially just | |
274 | * fills in bits in `status' according to internal driver state or | |
275 | * the value of the voltage detect chipselect register. | |
276 | * | |
277 | * As a debugging note, during card startup, the PCMCIA core issues | |
278 | * three set_socket() commands in a row the first with RESET deasserted, | |
279 | * the second with RESET asserted, and the last with RESET deasserted | |
280 | * again. Following the third set_socket(), a get_status() command will | |
281 | * be issued. The kernel is looking for the SS_READY flag (see | |
282 | * setup_socket(), reset_socket(), and unreset_socket() in cs.c). | |
283 | * | |
284 | * Returns: 0 | |
285 | */ | |
286 | static int | |
287 | soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) | |
288 | { | |
289 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
290 | ||
291 | skt->status = soc_common_pcmcia_skt_state(skt); | |
292 | *status = skt->status; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | ||
1da177e4 LT |
298 | /* |
299 | * Implements the set_socket() operation for the in-kernel PCMCIA | |
300 | * service (formerly SS_SetSocket in Card Services). We more or | |
301 | * less punt all of this work and let the kernel handle the details | |
302 | * of power configuration, reset, &c. We also record the value of | |
303 | * `state' in order to regurgitate it to the PCMCIA core later. | |
1da177e4 LT |
304 | */ |
305 | static int | |
306 | soc_common_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
307 | { | |
308 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
309 | ||
310 | debug(skt, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n", | |
311 | (state->csc_mask==0)?"<NONE> ":"", | |
312 | (state->csc_mask&SS_DETECT)?"DETECT ":"", | |
313 | (state->csc_mask&SS_READY)?"READY ":"", | |
314 | (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"", | |
315 | (state->csc_mask&SS_BATWARN)?"BATWARN ":"", | |
316 | (state->csc_mask&SS_STSCHG)?"STSCHG ":"", | |
317 | (state->flags==0)?"<NONE> ":"", | |
318 | (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"", | |
319 | (state->flags&SS_IOCARD)?"IOCARD ":"", | |
320 | (state->flags&SS_RESET)?"RESET ":"", | |
321 | (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"", | |
322 | (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"", | |
323 | state->Vcc, state->Vpp, state->io_irq); | |
324 | ||
325 | return soc_common_pcmcia_config_skt(skt, state); | |
326 | } | |
327 | ||
328 | ||
329 | /* | |
330 | * Implements the set_io_map() operation for the in-kernel PCMCIA | |
331 | * service (formerly SS_SetIOMap in Card Services). We configure | |
332 | * the map speed as requested, but override the address ranges | |
333 | * supplied by Card Services. | |
334 | * | |
335 | * Returns: 0 on success, -1 on error | |
336 | */ | |
337 | static int | |
338 | soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map) | |
339 | { | |
340 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
341 | unsigned short speed = map->speed; | |
342 | ||
343 | debug(skt, 2, "map %u speed %u start 0x%08x stop 0x%08x\n", | |
344 | map->map, map->speed, map->start, map->stop); | |
345 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
346 | (map->flags==0)?"<NONE>":"", | |
347 | (map->flags&MAP_ACTIVE)?"ACTIVE ":"", | |
348 | (map->flags&MAP_16BIT)?"16BIT ":"", | |
349 | (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", | |
350 | (map->flags&MAP_0WS)?"0WS ":"", | |
351 | (map->flags&MAP_WRPROT)?"WRPROT ":"", | |
352 | (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"", | |
353 | (map->flags&MAP_PREFETCH)?"PREFETCH ":""); | |
354 | ||
355 | if (map->map >= MAX_IO_WIN) { | |
356 | printk(KERN_ERR "%s(): map (%d) out of range\n", __FUNCTION__, | |
357 | map->map); | |
358 | return -1; | |
359 | } | |
360 | ||
361 | if (map->flags & MAP_ACTIVE) { | |
362 | if (speed == 0) | |
363 | speed = SOC_PCMCIA_IO_ACCESS; | |
364 | } else { | |
365 | speed = 0; | |
366 | } | |
367 | ||
368 | skt->spd_io[map->map] = speed; | |
369 | skt->ops->set_timing(skt); | |
370 | ||
371 | if (map->stop == 1) | |
372 | map->stop = PAGE_SIZE-1; | |
373 | ||
374 | map->stop -= map->start; | |
375 | map->stop += skt->socket.io_offset; | |
376 | map->start = skt->socket.io_offset; | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | ||
382 | /* | |
383 | * Implements the set_mem_map() operation for the in-kernel PCMCIA | |
384 | * service (formerly SS_SetMemMap in Card Services). We configure | |
385 | * the map speed as requested, but override the address ranges | |
386 | * supplied by Card Services. | |
387 | * | |
4846d017 | 388 | * Returns: 0 on success, -ERRNO on error |
1da177e4 LT |
389 | */ |
390 | static int | |
391 | soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map) | |
392 | { | |
393 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
394 | struct resource *res; | |
395 | unsigned short speed = map->speed; | |
396 | ||
397 | debug(skt, 2, "map %u speed %u card_start %08x\n", | |
398 | map->map, map->speed, map->card_start); | |
399 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
400 | (map->flags==0)?"<NONE>":"", | |
401 | (map->flags&MAP_ACTIVE)?"ACTIVE ":"", | |
402 | (map->flags&MAP_16BIT)?"16BIT ":"", | |
403 | (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", | |
404 | (map->flags&MAP_0WS)?"0WS ":"", | |
405 | (map->flags&MAP_WRPROT)?"WRPROT ":"", | |
406 | (map->flags&MAP_ATTRIB)?"ATTRIB ":"", | |
407 | (map->flags&MAP_USE_WAIT)?"USE_WAIT ":""); | |
408 | ||
409 | if (map->map >= MAX_WIN) | |
410 | return -EINVAL; | |
411 | ||
412 | if (map->flags & MAP_ACTIVE) { | |
413 | if (speed == 0) | |
414 | speed = 300; | |
415 | } else { | |
416 | speed = 0; | |
417 | } | |
418 | ||
419 | if (map->flags & MAP_ATTRIB) { | |
420 | res = &skt->res_attr; | |
421 | skt->spd_attr[map->map] = speed; | |
422 | skt->spd_mem[map->map] = 0; | |
423 | } else { | |
424 | res = &skt->res_mem; | |
425 | skt->spd_attr[map->map] = 0; | |
426 | skt->spd_mem[map->map] = speed; | |
427 | } | |
428 | ||
429 | skt->ops->set_timing(skt); | |
430 | ||
431 | map->static_start = res->start + map->card_start; | |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
436 | struct bittbl { | |
437 | unsigned int mask; | |
438 | const char *name; | |
439 | }; | |
440 | ||
441 | static struct bittbl status_bits[] = { | |
442 | { SS_WRPROT, "SS_WRPROT" }, | |
443 | { SS_BATDEAD, "SS_BATDEAD" }, | |
444 | { SS_BATWARN, "SS_BATWARN" }, | |
445 | { SS_READY, "SS_READY" }, | |
446 | { SS_DETECT, "SS_DETECT" }, | |
447 | { SS_POWERON, "SS_POWERON" }, | |
448 | { SS_STSCHG, "SS_STSCHG" }, | |
449 | { SS_3VCARD, "SS_3VCARD" }, | |
450 | { SS_XVCARD, "SS_XVCARD" }, | |
451 | }; | |
452 | ||
453 | static struct bittbl conf_bits[] = { | |
454 | { SS_PWR_AUTO, "SS_PWR_AUTO" }, | |
455 | { SS_IOCARD, "SS_IOCARD" }, | |
456 | { SS_RESET, "SS_RESET" }, | |
457 | { SS_DMA_MODE, "SS_DMA_MODE" }, | |
458 | { SS_SPKR_ENA, "SS_SPKR_ENA" }, | |
459 | { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, | |
460 | }; | |
461 | ||
462 | static void | |
463 | dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz) | |
464 | { | |
465 | char *b = *p; | |
466 | int i; | |
467 | ||
468 | b += sprintf(b, "%-9s:", prefix); | |
469 | for (i = 0; i < sz; i++) | |
470 | if (val & bits[i].mask) | |
471 | b += sprintf(b, " %s", bits[i].name); | |
472 | *b++ = '\n'; | |
473 | *p = b; | |
474 | } | |
475 | ||
476 | /* | |
477 | * Implements the /sys/class/pcmcia_socket/??/status file. | |
478 | * | |
479 | * Returns: the number of characters added to the buffer | |
480 | */ | |
e4a3c3f0 | 481 | static ssize_t show_status(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
482 | { |
483 | struct soc_pcmcia_socket *skt = | |
87373318 | 484 | container_of(dev, struct soc_pcmcia_socket, socket.dev); |
1da177e4 LT |
485 | char *p = buf; |
486 | ||
487 | p+=sprintf(p, "slot : %d\n", skt->nr); | |
488 | ||
489 | dump_bits(&p, "status", skt->status, | |
490 | status_bits, ARRAY_SIZE(status_bits)); | |
491 | dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, | |
492 | status_bits, ARRAY_SIZE(status_bits)); | |
493 | dump_bits(&p, "cs_flags", skt->cs_state.flags, | |
494 | conf_bits, ARRAY_SIZE(conf_bits)); | |
495 | ||
496 | p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc); | |
497 | p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp); | |
498 | p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq); | |
499 | if (skt->ops->show_timing) | |
500 | p+=skt->ops->show_timing(skt, p); | |
501 | ||
502 | return p-buf; | |
503 | } | |
e4a3c3f0 | 504 | static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
1da177e4 LT |
505 | |
506 | ||
507 | static struct pccard_operations soc_common_pcmcia_operations = { | |
508 | .init = soc_common_pcmcia_sock_init, | |
509 | .suspend = soc_common_pcmcia_suspend, | |
510 | .get_status = soc_common_pcmcia_get_status, | |
1da177e4 LT |
511 | .set_socket = soc_common_pcmcia_set_socket, |
512 | .set_io_map = soc_common_pcmcia_set_io_map, | |
513 | .set_mem_map = soc_common_pcmcia_set_mem_map, | |
514 | }; | |
515 | ||
516 | ||
517 | int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, | |
518 | struct pcmcia_irqs *irqs, int nr) | |
519 | { | |
520 | int i, res = 0; | |
521 | ||
522 | for (i = 0; i < nr; i++) { | |
523 | if (irqs[i].sock != skt->nr) | |
524 | continue; | |
525 | res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt, | |
dace1453 | 526 | IRQF_DISABLED, irqs[i].str, skt); |
1da177e4 LT |
527 | if (res) |
528 | break; | |
529 | set_irq_type(irqs[i].irq, IRQT_NOEDGE); | |
530 | } | |
531 | ||
532 | if (res) { | |
533 | printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n", | |
534 | irqs[i].irq, res); | |
535 | ||
536 | while (i--) | |
537 | if (irqs[i].sock == skt->nr) | |
538 | free_irq(irqs[i].irq, skt); | |
539 | } | |
540 | return res; | |
541 | } | |
542 | EXPORT_SYMBOL(soc_pcmcia_request_irqs); | |
543 | ||
544 | void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, | |
545 | struct pcmcia_irqs *irqs, int nr) | |
546 | { | |
547 | int i; | |
548 | ||
549 | for (i = 0; i < nr; i++) | |
550 | if (irqs[i].sock == skt->nr) | |
551 | free_irq(irqs[i].irq, skt); | |
552 | } | |
553 | EXPORT_SYMBOL(soc_pcmcia_free_irqs); | |
554 | ||
555 | void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, | |
556 | struct pcmcia_irqs *irqs, int nr) | |
557 | { | |
558 | int i; | |
559 | ||
560 | for (i = 0; i < nr; i++) | |
561 | if (irqs[i].sock == skt->nr) | |
562 | set_irq_type(irqs[i].irq, IRQT_NOEDGE); | |
563 | } | |
564 | EXPORT_SYMBOL(soc_pcmcia_disable_irqs); | |
565 | ||
566 | void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, | |
567 | struct pcmcia_irqs *irqs, int nr) | |
568 | { | |
569 | int i; | |
570 | ||
571 | for (i = 0; i < nr; i++) | |
572 | if (irqs[i].sock == skt->nr) { | |
573 | set_irq_type(irqs[i].irq, IRQT_RISING); | |
574 | set_irq_type(irqs[i].irq, IRQT_BOTHEDGE); | |
575 | } | |
576 | } | |
577 | EXPORT_SYMBOL(soc_pcmcia_enable_irqs); | |
578 | ||
579 | ||
580 | LIST_HEAD(soc_pcmcia_sockets); | |
581 | DECLARE_MUTEX(soc_pcmcia_sockets_lock); | |
582 | ||
583 | static const char *skt_names[] = { | |
584 | "PCMCIA socket 0", | |
585 | "PCMCIA socket 1", | |
586 | }; | |
587 | ||
588 | struct skt_dev_info { | |
589 | int nskt; | |
590 | struct soc_pcmcia_socket skt[0]; | |
591 | }; | |
592 | ||
593 | #define SKT_DEV_INFO_SIZE(n) \ | |
594 | (sizeof(struct skt_dev_info) + (n)*sizeof(struct soc_pcmcia_socket)) | |
595 | ||
596 | #ifdef CONFIG_CPU_FREQ | |
597 | static int | |
598 | soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data) | |
599 | { | |
600 | struct soc_pcmcia_socket *skt; | |
601 | struct cpufreq_freqs *freqs = data; | |
602 | int ret = 0; | |
603 | ||
604 | down(&soc_pcmcia_sockets_lock); | |
605 | list_for_each_entry(skt, &soc_pcmcia_sockets, node) | |
606 | if ( skt->ops->frequency_change ) | |
607 | ret += skt->ops->frequency_change(skt, val, freqs); | |
608 | up(&soc_pcmcia_sockets_lock); | |
609 | ||
610 | return ret; | |
611 | } | |
612 | ||
613 | static struct notifier_block soc_pcmcia_notifier_block = { | |
614 | .notifier_call = soc_pcmcia_notifier | |
615 | }; | |
616 | ||
617 | static int soc_pcmcia_cpufreq_register(void) | |
618 | { | |
619 | int ret; | |
620 | ||
621 | ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block, | |
622 | CPUFREQ_TRANSITION_NOTIFIER); | |
623 | if (ret < 0) | |
624 | printk(KERN_ERR "Unable to register CPU frequency change " | |
625 | "notifier for PCMCIA (%d)\n", ret); | |
626 | return ret; | |
627 | } | |
628 | ||
629 | static void soc_pcmcia_cpufreq_unregister(void) | |
630 | { | |
631 | cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); | |
632 | } | |
633 | ||
634 | #else | |
4846d017 PM |
635 | static int soc_pcmcia_cpufreq_register(void) { return 0; } |
636 | static void soc_pcmcia_cpufreq_unregister(void) {} | |
1da177e4 LT |
637 | #endif |
638 | ||
639 | int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr) | |
640 | { | |
641 | struct skt_dev_info *sinfo; | |
642 | struct soc_pcmcia_socket *skt; | |
643 | int ret, i; | |
644 | ||
645 | down(&soc_pcmcia_sockets_lock); | |
646 | ||
8084b372 | 647 | sinfo = kzalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL); |
1da177e4 LT |
648 | if (!sinfo) { |
649 | ret = -ENOMEM; | |
650 | goto out; | |
651 | } | |
652 | ||
1da177e4 LT |
653 | sinfo->nskt = nr; |
654 | ||
655 | /* | |
656 | * Initialise the per-socket structure. | |
657 | */ | |
658 | for (i = 0; i < nr; i++) { | |
659 | skt = &sinfo->skt[i]; | |
660 | ||
661 | skt->socket.ops = &soc_common_pcmcia_operations; | |
662 | skt->socket.owner = ops->owner; | |
e4a3c3f0 | 663 | skt->socket.dev.parent = dev; |
1da177e4 LT |
664 | |
665 | init_timer(&skt->poll_timer); | |
666 | skt->poll_timer.function = soc_common_pcmcia_poll_event; | |
667 | skt->poll_timer.data = (unsigned long)skt; | |
668 | skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; | |
669 | ||
670 | skt->nr = first + i; | |
671 | skt->irq = NO_IRQ; | |
672 | skt->dev = dev; | |
673 | skt->ops = ops; | |
674 | ||
675 | skt->res_skt.start = _PCMCIA(skt->nr); | |
676 | skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1; | |
677 | skt->res_skt.name = skt_names[skt->nr]; | |
678 | skt->res_skt.flags = IORESOURCE_MEM; | |
679 | ||
680 | ret = request_resource(&iomem_resource, &skt->res_skt); | |
681 | if (ret) | |
682 | goto out_err_1; | |
683 | ||
684 | skt->res_io.start = _PCMCIAIO(skt->nr); | |
685 | skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1; | |
686 | skt->res_io.name = "io"; | |
687 | skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
688 | ||
689 | ret = request_resource(&skt->res_skt, &skt->res_io); | |
690 | if (ret) | |
691 | goto out_err_2; | |
692 | ||
693 | skt->res_mem.start = _PCMCIAMem(skt->nr); | |
694 | skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1; | |
695 | skt->res_mem.name = "memory"; | |
696 | skt->res_mem.flags = IORESOURCE_MEM; | |
697 | ||
698 | ret = request_resource(&skt->res_skt, &skt->res_mem); | |
699 | if (ret) | |
700 | goto out_err_3; | |
701 | ||
702 | skt->res_attr.start = _PCMCIAAttr(skt->nr); | |
703 | skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1; | |
704 | skt->res_attr.name = "attribute"; | |
705 | skt->res_attr.flags = IORESOURCE_MEM; | |
706 | ||
707 | ret = request_resource(&skt->res_skt, &skt->res_attr); | |
708 | if (ret) | |
709 | goto out_err_4; | |
710 | ||
711 | skt->virt_io = ioremap(skt->res_io.start, 0x10000); | |
712 | if (skt->virt_io == NULL) { | |
713 | ret = -ENOMEM; | |
714 | goto out_err_5; | |
715 | } | |
716 | ||
4846d017 | 717 | if (list_empty(&soc_pcmcia_sockets)) |
1da177e4 LT |
718 | soc_pcmcia_cpufreq_register(); |
719 | ||
720 | list_add(&skt->node, &soc_pcmcia_sockets); | |
721 | ||
722 | /* | |
723 | * We initialize default socket timing here, because | |
724 | * we are not guaranteed to see a SetIOMap operation at | |
725 | * runtime. | |
726 | */ | |
727 | ops->set_timing(skt); | |
728 | ||
729 | ret = ops->hw_init(skt); | |
730 | if (ret) | |
731 | goto out_err_6; | |
732 | ||
733 | skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; | |
734 | skt->socket.resource_ops = &pccard_static_ops; | |
735 | skt->socket.irq_mask = 0; | |
736 | skt->socket.map_size = PAGE_SIZE; | |
737 | skt->socket.pci_irq = skt->irq; | |
738 | skt->socket.io_offset = (unsigned long)skt->virt_io; | |
739 | ||
740 | skt->status = soc_common_pcmcia_skt_state(skt); | |
741 | ||
742 | ret = pcmcia_register_socket(&skt->socket); | |
743 | if (ret) | |
744 | goto out_err_7; | |
745 | ||
746 | WARN_ON(skt->socket.sock != i); | |
747 | ||
748 | add_timer(&skt->poll_timer); | |
749 | ||
e4a3c3f0 | 750 | device_create_file(&skt->socket.dev, &dev_attr_status); |
1da177e4 LT |
751 | } |
752 | ||
753 | dev_set_drvdata(dev, sinfo); | |
754 | ret = 0; | |
755 | goto out; | |
756 | ||
757 | do { | |
758 | skt = &sinfo->skt[i]; | |
759 | ||
760 | del_timer_sync(&skt->poll_timer); | |
761 | pcmcia_unregister_socket(&skt->socket); | |
762 | ||
763 | out_err_7: | |
764 | flush_scheduled_work(); | |
765 | ||
766 | ops->hw_shutdown(skt); | |
767 | out_err_6: | |
768 | list_del(&skt->node); | |
769 | iounmap(skt->virt_io); | |
770 | out_err_5: | |
771 | release_resource(&skt->res_attr); | |
772 | out_err_4: | |
773 | release_resource(&skt->res_mem); | |
774 | out_err_3: | |
775 | release_resource(&skt->res_io); | |
776 | out_err_2: | |
777 | release_resource(&skt->res_skt); | |
778 | out_err_1: | |
779 | i--; | |
780 | } while (i > 0); | |
781 | ||
782 | kfree(sinfo); | |
783 | ||
784 | out: | |
785 | up(&soc_pcmcia_sockets_lock); | |
786 | return ret; | |
787 | } | |
788 | ||
789 | int soc_common_drv_pcmcia_remove(struct device *dev) | |
790 | { | |
791 | struct skt_dev_info *sinfo = dev_get_drvdata(dev); | |
792 | int i; | |
793 | ||
794 | dev_set_drvdata(dev, NULL); | |
795 | ||
796 | down(&soc_pcmcia_sockets_lock); | |
797 | for (i = 0; i < sinfo->nskt; i++) { | |
798 | struct soc_pcmcia_socket *skt = &sinfo->skt[i]; | |
799 | ||
800 | del_timer_sync(&skt->poll_timer); | |
801 | ||
802 | pcmcia_unregister_socket(&skt->socket); | |
803 | ||
804 | flush_scheduled_work(); | |
805 | ||
806 | skt->ops->hw_shutdown(skt); | |
807 | ||
808 | soc_common_pcmcia_config_skt(skt, &dead_socket); | |
809 | ||
810 | list_del(&skt->node); | |
811 | iounmap(skt->virt_io); | |
812 | skt->virt_io = NULL; | |
813 | release_resource(&skt->res_attr); | |
814 | release_resource(&skt->res_mem); | |
815 | release_resource(&skt->res_io); | |
816 | release_resource(&skt->res_skt); | |
817 | } | |
4846d017 | 818 | if (list_empty(&soc_pcmcia_sockets)) |
1da177e4 LT |
819 | soc_pcmcia_cpufreq_unregister(); |
820 | ||
821 | up(&soc_pcmcia_sockets_lock); | |
822 | ||
823 | kfree(sinfo); | |
824 | ||
825 | return 0; | |
826 | } | |
26aaa3c2 | 827 | EXPORT_SYMBOL(soc_common_drv_pcmcia_remove); |