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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 | ||
34 | #include <linux/config.h> | |
35 | #include <linux/module.h> | |
36 | #include <linux/moduleparam.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/timer.h> | |
40 | #include <linux/mm.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/spinlock.h> | |
43 | #include <linux/cpufreq.h> | |
44 | ||
45 | #include <asm/hardware.h> | |
46 | #include <asm/io.h> | |
47 | #include <asm/irq.h> | |
48 | #include <asm/system.h> | |
49 | ||
50 | #include "soc_common.h" | |
51 | ||
52 | /* FIXME: platform dependent resource declaration has to move out of this file */ | |
53 | #ifdef CONFIG_ARCH_PXA | |
54 | #include <asm/arch/pxa-regs.h> | |
55 | #endif | |
56 | ||
57 | #ifdef DEBUG | |
58 | ||
59 | static int pc_debug; | |
60 | module_param(pc_debug, int, 0644); | |
61 | ||
62 | void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, | |
63 | int lvl, const char *fmt, ...) | |
64 | { | |
65 | va_list args; | |
66 | if (pc_debug > lvl) { | |
67 | printk(KERN_DEBUG "skt%u: %s: ", skt->nr, func); | |
68 | va_start(args, fmt); | |
4846d017 | 69 | vprintk(fmt, args); |
1da177e4 LT |
70 | va_end(args); |
71 | } | |
72 | } | |
73 | ||
74 | #endif | |
75 | ||
76 | #define to_soc_pcmcia_socket(x) container_of(x, struct soc_pcmcia_socket, socket) | |
77 | ||
78 | static unsigned short | |
79 | calc_speed(unsigned short *spds, int num, unsigned short dflt) | |
80 | { | |
81 | unsigned short speed = 0; | |
82 | int i; | |
83 | ||
84 | for (i = 0; i < num; i++) | |
85 | if (speed < spds[i]) | |
86 | speed = spds[i]; | |
87 | if (speed == 0) | |
88 | speed = dflt; | |
89 | ||
90 | return speed; | |
91 | } | |
92 | ||
93 | void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing) | |
94 | { | |
95 | timing->io = calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS); | |
96 | timing->mem = calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
97 | timing->attr = calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
98 | } | |
99 | EXPORT_SYMBOL(soc_common_pcmcia_get_timing); | |
100 | ||
101 | static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) | |
102 | { | |
103 | struct pcmcia_state state; | |
104 | unsigned int stat; | |
105 | ||
106 | memset(&state, 0, sizeof(struct pcmcia_state)); | |
107 | ||
108 | skt->ops->socket_state(skt, &state); | |
109 | ||
110 | stat = state.detect ? SS_DETECT : 0; | |
111 | stat |= state.ready ? SS_READY : 0; | |
112 | stat |= state.wrprot ? SS_WRPROT : 0; | |
113 | stat |= state.vs_3v ? SS_3VCARD : 0; | |
114 | stat |= state.vs_Xv ? SS_XVCARD : 0; | |
115 | ||
116 | /* The power status of individual sockets is not available | |
117 | * explicitly from the hardware, so we just remember the state | |
118 | * and regurgitate it upon request: | |
119 | */ | |
120 | stat |= skt->cs_state.Vcc ? SS_POWERON : 0; | |
121 | ||
122 | if (skt->cs_state.flags & SS_IOCARD) | |
123 | stat |= state.bvd1 ? SS_STSCHG : 0; | |
124 | else { | |
125 | if (state.bvd1 == 0) | |
126 | stat |= SS_BATDEAD; | |
127 | else if (state.bvd2 == 0) | |
128 | stat |= SS_BATWARN; | |
129 | } | |
130 | return stat; | |
131 | } | |
132 | ||
133 | /* | |
134 | * soc_common_pcmcia_config_skt | |
135 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
136 | * | |
137 | * Convert PCMCIA socket state to our socket configure structure. | |
138 | */ | |
139 | static int | |
140 | soc_common_pcmcia_config_skt(struct soc_pcmcia_socket *skt, socket_state_t *state) | |
141 | { | |
142 | int ret; | |
143 | ||
144 | ret = skt->ops->configure_socket(skt, state); | |
145 | if (ret == 0) { | |
146 | /* | |
147 | * This really needs a better solution. The IRQ | |
148 | * may or may not be claimed by the driver. | |
149 | */ | |
150 | if (skt->irq_state != 1 && state->io_irq) { | |
151 | skt->irq_state = 1; | |
152 | set_irq_type(skt->irq, IRQT_FALLING); | |
153 | } else if (skt->irq_state == 1 && state->io_irq == 0) { | |
154 | skt->irq_state = 0; | |
155 | set_irq_type(skt->irq, IRQT_NOEDGE); | |
156 | } | |
157 | ||
158 | skt->cs_state = *state; | |
159 | } | |
160 | ||
161 | if (ret < 0) | |
162 | printk(KERN_ERR "soc_common_pcmcia: unable to configure " | |
163 | "socket %d\n", skt->nr); | |
164 | ||
165 | return ret; | |
166 | } | |
167 | ||
168 | /* soc_common_pcmcia_sock_init() | |
169 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
170 | * | |
171 | * (Re-)Initialise the socket, turning on status interrupts | |
172 | * and PCMCIA bus. This must wait for power to stabilise | |
173 | * so that the card status signals report correctly. | |
174 | * | |
175 | * Returns: 0 | |
176 | */ | |
177 | static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock) | |
178 | { | |
179 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
180 | ||
181 | debug(skt, 2, "initializing socket\n"); | |
182 | ||
183 | skt->ops->socket_init(skt); | |
184 | return 0; | |
185 | } | |
186 | ||
187 | ||
188 | /* | |
189 | * soc_common_pcmcia_suspend() | |
190 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
191 | * | |
192 | * Remove power on the socket, disable IRQs from the card. | |
193 | * Turn off status interrupts, and disable the PCMCIA bus. | |
194 | * | |
195 | * Returns: 0 | |
196 | */ | |
197 | static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock) | |
198 | { | |
199 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
200 | ||
201 | debug(skt, 2, "suspending socket\n"); | |
202 | ||
203 | skt->ops->socket_suspend(skt); | |
204 | ||
205 | return 0; | |
206 | } | |
207 | ||
208 | static DEFINE_SPINLOCK(status_lock); | |
209 | ||
210 | static void soc_common_check_status(struct soc_pcmcia_socket *skt) | |
211 | { | |
212 | unsigned int events; | |
213 | ||
214 | debug(skt, 4, "entering PCMCIA monitoring thread\n"); | |
215 | ||
216 | do { | |
217 | unsigned int status; | |
218 | unsigned long flags; | |
219 | ||
220 | status = soc_common_pcmcia_skt_state(skt); | |
221 | ||
222 | spin_lock_irqsave(&status_lock, flags); | |
223 | events = (status ^ skt->status) & skt->cs_state.csc_mask; | |
224 | skt->status = status; | |
225 | spin_unlock_irqrestore(&status_lock, flags); | |
226 | ||
227 | debug(skt, 4, "events: %s%s%s%s%s%s\n", | |
228 | events == 0 ? "<NONE>" : "", | |
229 | events & SS_DETECT ? "DETECT " : "", | |
230 | events & SS_READY ? "READY " : "", | |
231 | events & SS_BATDEAD ? "BATDEAD " : "", | |
232 | events & SS_BATWARN ? "BATWARN " : "", | |
233 | events & SS_STSCHG ? "STSCHG " : ""); | |
234 | ||
235 | if (events) | |
236 | pcmcia_parse_events(&skt->socket, events); | |
237 | } while (events); | |
238 | } | |
239 | ||
240 | /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */ | |
241 | static void soc_common_pcmcia_poll_event(unsigned long dummy) | |
242 | { | |
243 | struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy; | |
244 | debug(skt, 4, "polling for events\n"); | |
245 | ||
246 | mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD); | |
247 | ||
248 | soc_common_check_status(skt); | |
249 | } | |
250 | ||
251 | ||
252 | /* | |
253 | * Service routine for socket driver interrupts (requested by the | |
254 | * low-level PCMCIA init() operation via soc_common_pcmcia_thread()). | |
255 | * The actual interrupt-servicing work is performed by | |
256 | * soc_common_pcmcia_thread(), largely because the Card Services event- | |
257 | * handling code performs scheduling operations which cannot be | |
258 | * executed from within an interrupt context. | |
259 | */ | |
260 | static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev, struct pt_regs *regs) | |
261 | { | |
262 | struct soc_pcmcia_socket *skt = dev; | |
263 | ||
264 | debug(skt, 3, "servicing IRQ %d\n", irq); | |
265 | ||
266 | soc_common_check_status(skt); | |
267 | ||
268 | return IRQ_HANDLED; | |
269 | } | |
270 | ||
271 | ||
272 | /* | |
273 | * Implements the get_status() operation for the in-kernel PCMCIA | |
274 | * service (formerly SS_GetStatus in Card Services). Essentially just | |
275 | * fills in bits in `status' according to internal driver state or | |
276 | * the value of the voltage detect chipselect register. | |
277 | * | |
278 | * As a debugging note, during card startup, the PCMCIA core issues | |
279 | * three set_socket() commands in a row the first with RESET deasserted, | |
280 | * the second with RESET asserted, and the last with RESET deasserted | |
281 | * again. Following the third set_socket(), a get_status() command will | |
282 | * be issued. The kernel is looking for the SS_READY flag (see | |
283 | * setup_socket(), reset_socket(), and unreset_socket() in cs.c). | |
284 | * | |
285 | * Returns: 0 | |
286 | */ | |
287 | static int | |
288 | soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) | |
289 | { | |
290 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
291 | ||
292 | skt->status = soc_common_pcmcia_skt_state(skt); | |
293 | *status = skt->status; | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | ||
299 | /* | |
300 | * Implements the get_socket() operation for the in-kernel PCMCIA | |
301 | * service (formerly SS_GetSocket in Card Services). Not a very | |
302 | * exciting routine. | |
303 | * | |
304 | * Returns: 0 | |
305 | */ | |
306 | static int | |
307 | soc_common_pcmcia_get_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
308 | { | |
309 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
310 | ||
311 | debug(skt, 2, "\n"); | |
312 | ||
313 | *state = skt->cs_state; | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | /* | |
319 | * Implements the set_socket() operation for the in-kernel PCMCIA | |
320 | * service (formerly SS_SetSocket in Card Services). We more or | |
321 | * less punt all of this work and let the kernel handle the details | |
322 | * of power configuration, reset, &c. We also record the value of | |
323 | * `state' in order to regurgitate it to the PCMCIA core later. | |
1da177e4 LT |
324 | */ |
325 | static int | |
326 | soc_common_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
327 | { | |
328 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
329 | ||
330 | debug(skt, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n", | |
331 | (state->csc_mask==0)?"<NONE> ":"", | |
332 | (state->csc_mask&SS_DETECT)?"DETECT ":"", | |
333 | (state->csc_mask&SS_READY)?"READY ":"", | |
334 | (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"", | |
335 | (state->csc_mask&SS_BATWARN)?"BATWARN ":"", | |
336 | (state->csc_mask&SS_STSCHG)?"STSCHG ":"", | |
337 | (state->flags==0)?"<NONE> ":"", | |
338 | (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"", | |
339 | (state->flags&SS_IOCARD)?"IOCARD ":"", | |
340 | (state->flags&SS_RESET)?"RESET ":"", | |
341 | (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"", | |
342 | (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"", | |
343 | state->Vcc, state->Vpp, state->io_irq); | |
344 | ||
345 | return soc_common_pcmcia_config_skt(skt, state); | |
346 | } | |
347 | ||
348 | ||
349 | /* | |
350 | * Implements the set_io_map() operation for the in-kernel PCMCIA | |
351 | * service (formerly SS_SetIOMap in Card Services). We configure | |
352 | * the map speed as requested, but override the address ranges | |
353 | * supplied by Card Services. | |
354 | * | |
355 | * Returns: 0 on success, -1 on error | |
356 | */ | |
357 | static int | |
358 | soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map) | |
359 | { | |
360 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
361 | unsigned short speed = map->speed; | |
362 | ||
363 | debug(skt, 2, "map %u speed %u start 0x%08x stop 0x%08x\n", | |
364 | map->map, map->speed, map->start, map->stop); | |
365 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
366 | (map->flags==0)?"<NONE>":"", | |
367 | (map->flags&MAP_ACTIVE)?"ACTIVE ":"", | |
368 | (map->flags&MAP_16BIT)?"16BIT ":"", | |
369 | (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", | |
370 | (map->flags&MAP_0WS)?"0WS ":"", | |
371 | (map->flags&MAP_WRPROT)?"WRPROT ":"", | |
372 | (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"", | |
373 | (map->flags&MAP_PREFETCH)?"PREFETCH ":""); | |
374 | ||
375 | if (map->map >= MAX_IO_WIN) { | |
376 | printk(KERN_ERR "%s(): map (%d) out of range\n", __FUNCTION__, | |
377 | map->map); | |
378 | return -1; | |
379 | } | |
380 | ||
381 | if (map->flags & MAP_ACTIVE) { | |
382 | if (speed == 0) | |
383 | speed = SOC_PCMCIA_IO_ACCESS; | |
384 | } else { | |
385 | speed = 0; | |
386 | } | |
387 | ||
388 | skt->spd_io[map->map] = speed; | |
389 | skt->ops->set_timing(skt); | |
390 | ||
391 | if (map->stop == 1) | |
392 | map->stop = PAGE_SIZE-1; | |
393 | ||
394 | map->stop -= map->start; | |
395 | map->stop += skt->socket.io_offset; | |
396 | map->start = skt->socket.io_offset; | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
401 | ||
402 | /* | |
403 | * Implements the set_mem_map() operation for the in-kernel PCMCIA | |
404 | * service (formerly SS_SetMemMap in Card Services). We configure | |
405 | * the map speed as requested, but override the address ranges | |
406 | * supplied by Card Services. | |
407 | * | |
4846d017 | 408 | * Returns: 0 on success, -ERRNO on error |
1da177e4 LT |
409 | */ |
410 | static int | |
411 | soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map) | |
412 | { | |
413 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
414 | struct resource *res; | |
415 | unsigned short speed = map->speed; | |
416 | ||
417 | debug(skt, 2, "map %u speed %u card_start %08x\n", | |
418 | map->map, map->speed, map->card_start); | |
419 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
420 | (map->flags==0)?"<NONE>":"", | |
421 | (map->flags&MAP_ACTIVE)?"ACTIVE ":"", | |
422 | (map->flags&MAP_16BIT)?"16BIT ":"", | |
423 | (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", | |
424 | (map->flags&MAP_0WS)?"0WS ":"", | |
425 | (map->flags&MAP_WRPROT)?"WRPROT ":"", | |
426 | (map->flags&MAP_ATTRIB)?"ATTRIB ":"", | |
427 | (map->flags&MAP_USE_WAIT)?"USE_WAIT ":""); | |
428 | ||
429 | if (map->map >= MAX_WIN) | |
430 | return -EINVAL; | |
431 | ||
432 | if (map->flags & MAP_ACTIVE) { | |
433 | if (speed == 0) | |
434 | speed = 300; | |
435 | } else { | |
436 | speed = 0; | |
437 | } | |
438 | ||
439 | if (map->flags & MAP_ATTRIB) { | |
440 | res = &skt->res_attr; | |
441 | skt->spd_attr[map->map] = speed; | |
442 | skt->spd_mem[map->map] = 0; | |
443 | } else { | |
444 | res = &skt->res_mem; | |
445 | skt->spd_attr[map->map] = 0; | |
446 | skt->spd_mem[map->map] = speed; | |
447 | } | |
448 | ||
449 | skt->ops->set_timing(skt); | |
450 | ||
451 | map->static_start = res->start + map->card_start; | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | struct bittbl { | |
457 | unsigned int mask; | |
458 | const char *name; | |
459 | }; | |
460 | ||
461 | static struct bittbl status_bits[] = { | |
462 | { SS_WRPROT, "SS_WRPROT" }, | |
463 | { SS_BATDEAD, "SS_BATDEAD" }, | |
464 | { SS_BATWARN, "SS_BATWARN" }, | |
465 | { SS_READY, "SS_READY" }, | |
466 | { SS_DETECT, "SS_DETECT" }, | |
467 | { SS_POWERON, "SS_POWERON" }, | |
468 | { SS_STSCHG, "SS_STSCHG" }, | |
469 | { SS_3VCARD, "SS_3VCARD" }, | |
470 | { SS_XVCARD, "SS_XVCARD" }, | |
471 | }; | |
472 | ||
473 | static struct bittbl conf_bits[] = { | |
474 | { SS_PWR_AUTO, "SS_PWR_AUTO" }, | |
475 | { SS_IOCARD, "SS_IOCARD" }, | |
476 | { SS_RESET, "SS_RESET" }, | |
477 | { SS_DMA_MODE, "SS_DMA_MODE" }, | |
478 | { SS_SPKR_ENA, "SS_SPKR_ENA" }, | |
479 | { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, | |
480 | }; | |
481 | ||
482 | static void | |
483 | dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz) | |
484 | { | |
485 | char *b = *p; | |
486 | int i; | |
487 | ||
488 | b += sprintf(b, "%-9s:", prefix); | |
489 | for (i = 0; i < sz; i++) | |
490 | if (val & bits[i].mask) | |
491 | b += sprintf(b, " %s", bits[i].name); | |
492 | *b++ = '\n'; | |
493 | *p = b; | |
494 | } | |
495 | ||
496 | /* | |
497 | * Implements the /sys/class/pcmcia_socket/??/status file. | |
498 | * | |
499 | * Returns: the number of characters added to the buffer | |
500 | */ | |
501 | static ssize_t show_status(struct class_device *class_dev, char *buf) | |
502 | { | |
503 | struct soc_pcmcia_socket *skt = | |
504 | container_of(class_dev, struct soc_pcmcia_socket, socket.dev); | |
505 | char *p = buf; | |
506 | ||
507 | p+=sprintf(p, "slot : %d\n", skt->nr); | |
508 | ||
509 | dump_bits(&p, "status", skt->status, | |
510 | status_bits, ARRAY_SIZE(status_bits)); | |
511 | dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, | |
512 | status_bits, ARRAY_SIZE(status_bits)); | |
513 | dump_bits(&p, "cs_flags", skt->cs_state.flags, | |
514 | conf_bits, ARRAY_SIZE(conf_bits)); | |
515 | ||
516 | p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc); | |
517 | p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp); | |
518 | p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq); | |
519 | if (skt->ops->show_timing) | |
520 | p+=skt->ops->show_timing(skt, p); | |
521 | ||
522 | return p-buf; | |
523 | } | |
524 | static CLASS_DEVICE_ATTR(status, S_IRUGO, show_status, NULL); | |
525 | ||
526 | ||
527 | static struct pccard_operations soc_common_pcmcia_operations = { | |
528 | .init = soc_common_pcmcia_sock_init, | |
529 | .suspend = soc_common_pcmcia_suspend, | |
530 | .get_status = soc_common_pcmcia_get_status, | |
531 | .get_socket = soc_common_pcmcia_get_socket, | |
532 | .set_socket = soc_common_pcmcia_set_socket, | |
533 | .set_io_map = soc_common_pcmcia_set_io_map, | |
534 | .set_mem_map = soc_common_pcmcia_set_mem_map, | |
535 | }; | |
536 | ||
537 | ||
538 | int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, | |
539 | struct pcmcia_irqs *irqs, int nr) | |
540 | { | |
541 | int i, res = 0; | |
542 | ||
543 | for (i = 0; i < nr; i++) { | |
544 | if (irqs[i].sock != skt->nr) | |
545 | continue; | |
546 | res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt, | |
547 | SA_INTERRUPT, irqs[i].str, skt); | |
548 | if (res) | |
549 | break; | |
550 | set_irq_type(irqs[i].irq, IRQT_NOEDGE); | |
551 | } | |
552 | ||
553 | if (res) { | |
554 | printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n", | |
555 | irqs[i].irq, res); | |
556 | ||
557 | while (i--) | |
558 | if (irqs[i].sock == skt->nr) | |
559 | free_irq(irqs[i].irq, skt); | |
560 | } | |
561 | return res; | |
562 | } | |
563 | EXPORT_SYMBOL(soc_pcmcia_request_irqs); | |
564 | ||
565 | void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, | |
566 | struct pcmcia_irqs *irqs, int nr) | |
567 | { | |
568 | int i; | |
569 | ||
570 | for (i = 0; i < nr; i++) | |
571 | if (irqs[i].sock == skt->nr) | |
572 | free_irq(irqs[i].irq, skt); | |
573 | } | |
574 | EXPORT_SYMBOL(soc_pcmcia_free_irqs); | |
575 | ||
576 | void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, | |
577 | struct pcmcia_irqs *irqs, int nr) | |
578 | { | |
579 | int i; | |
580 | ||
581 | for (i = 0; i < nr; i++) | |
582 | if (irqs[i].sock == skt->nr) | |
583 | set_irq_type(irqs[i].irq, IRQT_NOEDGE); | |
584 | } | |
585 | EXPORT_SYMBOL(soc_pcmcia_disable_irqs); | |
586 | ||
587 | void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, | |
588 | struct pcmcia_irqs *irqs, int nr) | |
589 | { | |
590 | int i; | |
591 | ||
592 | for (i = 0; i < nr; i++) | |
593 | if (irqs[i].sock == skt->nr) { | |
594 | set_irq_type(irqs[i].irq, IRQT_RISING); | |
595 | set_irq_type(irqs[i].irq, IRQT_BOTHEDGE); | |
596 | } | |
597 | } | |
598 | EXPORT_SYMBOL(soc_pcmcia_enable_irqs); | |
599 | ||
600 | ||
601 | LIST_HEAD(soc_pcmcia_sockets); | |
602 | DECLARE_MUTEX(soc_pcmcia_sockets_lock); | |
603 | ||
604 | static const char *skt_names[] = { | |
605 | "PCMCIA socket 0", | |
606 | "PCMCIA socket 1", | |
607 | }; | |
608 | ||
609 | struct skt_dev_info { | |
610 | int nskt; | |
611 | struct soc_pcmcia_socket skt[0]; | |
612 | }; | |
613 | ||
614 | #define SKT_DEV_INFO_SIZE(n) \ | |
615 | (sizeof(struct skt_dev_info) + (n)*sizeof(struct soc_pcmcia_socket)) | |
616 | ||
617 | #ifdef CONFIG_CPU_FREQ | |
618 | static int | |
619 | soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data) | |
620 | { | |
621 | struct soc_pcmcia_socket *skt; | |
622 | struct cpufreq_freqs *freqs = data; | |
623 | int ret = 0; | |
624 | ||
625 | down(&soc_pcmcia_sockets_lock); | |
626 | list_for_each_entry(skt, &soc_pcmcia_sockets, node) | |
627 | if ( skt->ops->frequency_change ) | |
628 | ret += skt->ops->frequency_change(skt, val, freqs); | |
629 | up(&soc_pcmcia_sockets_lock); | |
630 | ||
631 | return ret; | |
632 | } | |
633 | ||
634 | static struct notifier_block soc_pcmcia_notifier_block = { | |
635 | .notifier_call = soc_pcmcia_notifier | |
636 | }; | |
637 | ||
638 | static int soc_pcmcia_cpufreq_register(void) | |
639 | { | |
640 | int ret; | |
641 | ||
642 | ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block, | |
643 | CPUFREQ_TRANSITION_NOTIFIER); | |
644 | if (ret < 0) | |
645 | printk(KERN_ERR "Unable to register CPU frequency change " | |
646 | "notifier for PCMCIA (%d)\n", ret); | |
647 | return ret; | |
648 | } | |
649 | ||
650 | static void soc_pcmcia_cpufreq_unregister(void) | |
651 | { | |
652 | cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); | |
653 | } | |
654 | ||
655 | #else | |
4846d017 PM |
656 | static int soc_pcmcia_cpufreq_register(void) { return 0; } |
657 | static void soc_pcmcia_cpufreq_unregister(void) {} | |
1da177e4 LT |
658 | #endif |
659 | ||
660 | int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr) | |
661 | { | |
662 | struct skt_dev_info *sinfo; | |
663 | struct soc_pcmcia_socket *skt; | |
664 | int ret, i; | |
665 | ||
666 | down(&soc_pcmcia_sockets_lock); | |
667 | ||
668 | sinfo = kmalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL); | |
669 | if (!sinfo) { | |
670 | ret = -ENOMEM; | |
671 | goto out; | |
672 | } | |
673 | ||
674 | memset(sinfo, 0, SKT_DEV_INFO_SIZE(nr)); | |
675 | sinfo->nskt = nr; | |
676 | ||
677 | /* | |
678 | * Initialise the per-socket structure. | |
679 | */ | |
680 | for (i = 0; i < nr; i++) { | |
681 | skt = &sinfo->skt[i]; | |
682 | ||
683 | skt->socket.ops = &soc_common_pcmcia_operations; | |
684 | skt->socket.owner = ops->owner; | |
685 | skt->socket.dev.dev = dev; | |
686 | ||
687 | init_timer(&skt->poll_timer); | |
688 | skt->poll_timer.function = soc_common_pcmcia_poll_event; | |
689 | skt->poll_timer.data = (unsigned long)skt; | |
690 | skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; | |
691 | ||
692 | skt->nr = first + i; | |
693 | skt->irq = NO_IRQ; | |
694 | skt->dev = dev; | |
695 | skt->ops = ops; | |
696 | ||
697 | skt->res_skt.start = _PCMCIA(skt->nr); | |
698 | skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1; | |
699 | skt->res_skt.name = skt_names[skt->nr]; | |
700 | skt->res_skt.flags = IORESOURCE_MEM; | |
701 | ||
702 | ret = request_resource(&iomem_resource, &skt->res_skt); | |
703 | if (ret) | |
704 | goto out_err_1; | |
705 | ||
706 | skt->res_io.start = _PCMCIAIO(skt->nr); | |
707 | skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1; | |
708 | skt->res_io.name = "io"; | |
709 | skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
710 | ||
711 | ret = request_resource(&skt->res_skt, &skt->res_io); | |
712 | if (ret) | |
713 | goto out_err_2; | |
714 | ||
715 | skt->res_mem.start = _PCMCIAMem(skt->nr); | |
716 | skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1; | |
717 | skt->res_mem.name = "memory"; | |
718 | skt->res_mem.flags = IORESOURCE_MEM; | |
719 | ||
720 | ret = request_resource(&skt->res_skt, &skt->res_mem); | |
721 | if (ret) | |
722 | goto out_err_3; | |
723 | ||
724 | skt->res_attr.start = _PCMCIAAttr(skt->nr); | |
725 | skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1; | |
726 | skt->res_attr.name = "attribute"; | |
727 | skt->res_attr.flags = IORESOURCE_MEM; | |
728 | ||
729 | ret = request_resource(&skt->res_skt, &skt->res_attr); | |
730 | if (ret) | |
731 | goto out_err_4; | |
732 | ||
733 | skt->virt_io = ioremap(skt->res_io.start, 0x10000); | |
734 | if (skt->virt_io == NULL) { | |
735 | ret = -ENOMEM; | |
736 | goto out_err_5; | |
737 | } | |
738 | ||
4846d017 | 739 | if (list_empty(&soc_pcmcia_sockets)) |
1da177e4 LT |
740 | soc_pcmcia_cpufreq_register(); |
741 | ||
742 | list_add(&skt->node, &soc_pcmcia_sockets); | |
743 | ||
744 | /* | |
745 | * We initialize default socket timing here, because | |
746 | * we are not guaranteed to see a SetIOMap operation at | |
747 | * runtime. | |
748 | */ | |
749 | ops->set_timing(skt); | |
750 | ||
751 | ret = ops->hw_init(skt); | |
752 | if (ret) | |
753 | goto out_err_6; | |
754 | ||
755 | skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; | |
756 | skt->socket.resource_ops = &pccard_static_ops; | |
757 | skt->socket.irq_mask = 0; | |
758 | skt->socket.map_size = PAGE_SIZE; | |
759 | skt->socket.pci_irq = skt->irq; | |
760 | skt->socket.io_offset = (unsigned long)skt->virt_io; | |
761 | ||
762 | skt->status = soc_common_pcmcia_skt_state(skt); | |
763 | ||
764 | ret = pcmcia_register_socket(&skt->socket); | |
765 | if (ret) | |
766 | goto out_err_7; | |
767 | ||
768 | WARN_ON(skt->socket.sock != i); | |
769 | ||
770 | add_timer(&skt->poll_timer); | |
771 | ||
772 | class_device_create_file(&skt->socket.dev, &class_device_attr_status); | |
773 | } | |
774 | ||
775 | dev_set_drvdata(dev, sinfo); | |
776 | ret = 0; | |
777 | goto out; | |
778 | ||
779 | do { | |
780 | skt = &sinfo->skt[i]; | |
781 | ||
782 | del_timer_sync(&skt->poll_timer); | |
783 | pcmcia_unregister_socket(&skt->socket); | |
784 | ||
785 | out_err_7: | |
786 | flush_scheduled_work(); | |
787 | ||
788 | ops->hw_shutdown(skt); | |
789 | out_err_6: | |
790 | list_del(&skt->node); | |
791 | iounmap(skt->virt_io); | |
792 | out_err_5: | |
793 | release_resource(&skt->res_attr); | |
794 | out_err_4: | |
795 | release_resource(&skt->res_mem); | |
796 | out_err_3: | |
797 | release_resource(&skt->res_io); | |
798 | out_err_2: | |
799 | release_resource(&skt->res_skt); | |
800 | out_err_1: | |
801 | i--; | |
802 | } while (i > 0); | |
803 | ||
804 | kfree(sinfo); | |
805 | ||
806 | out: | |
807 | up(&soc_pcmcia_sockets_lock); | |
808 | return ret; | |
809 | } | |
810 | ||
811 | int soc_common_drv_pcmcia_remove(struct device *dev) | |
812 | { | |
813 | struct skt_dev_info *sinfo = dev_get_drvdata(dev); | |
814 | int i; | |
815 | ||
816 | dev_set_drvdata(dev, NULL); | |
817 | ||
818 | down(&soc_pcmcia_sockets_lock); | |
819 | for (i = 0; i < sinfo->nskt; i++) { | |
820 | struct soc_pcmcia_socket *skt = &sinfo->skt[i]; | |
821 | ||
822 | del_timer_sync(&skt->poll_timer); | |
823 | ||
824 | pcmcia_unregister_socket(&skt->socket); | |
825 | ||
826 | flush_scheduled_work(); | |
827 | ||
828 | skt->ops->hw_shutdown(skt); | |
829 | ||
830 | soc_common_pcmcia_config_skt(skt, &dead_socket); | |
831 | ||
832 | list_del(&skt->node); | |
833 | iounmap(skt->virt_io); | |
834 | skt->virt_io = NULL; | |
835 | release_resource(&skt->res_attr); | |
836 | release_resource(&skt->res_mem); | |
837 | release_resource(&skt->res_io); | |
838 | release_resource(&skt->res_skt); | |
839 | } | |
4846d017 | 840 | if (list_empty(&soc_pcmcia_sockets)) |
1da177e4 LT |
841 | soc_pcmcia_cpufreq_unregister(); |
842 | ||
843 | up(&soc_pcmcia_sockets_lock); | |
844 | ||
845 | kfree(sinfo); | |
846 | ||
847 | return 0; | |
848 | } |