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 <asm/hardware.h> 47 #include <asm/io.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); 69 vprintk(fmt, args); 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) 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 set_socket() operation for the in-kernel PCMCIA 301 * service (formerly SS_SetSocket in Card Services). We more or 302 * less punt all of this work and let the kernel handle the details 303 * of power configuration, reset, &c. We also record the value of 304 * `state' in order to regurgitate it to the PCMCIA core later. 305 */ 306 static int 307 soc_common_pcmcia_set_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, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n", 312 (state->csc_mask==0)?"<NONE> ":"", 313 (state->csc_mask&SS_DETECT)?"DETECT ":"", 314 (state->csc_mask&SS_READY)?"READY ":"", 315 (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"", 316 (state->csc_mask&SS_BATWARN)?"BATWARN ":"", 317 (state->csc_mask&SS_STSCHG)?"STSCHG ":"", 318 (state->flags==0)?"<NONE> ":"", 319 (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"", 320 (state->flags&SS_IOCARD)?"IOCARD ":"", 321 (state->flags&SS_RESET)?"RESET ":"", 322 (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"", 323 (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"", 324 state->Vcc, state->Vpp, state->io_irq); 325 326 return soc_common_pcmcia_config_skt(skt, state); 327 } 328 329 330 /* 331 * Implements the set_io_map() operation for the in-kernel PCMCIA 332 * service (formerly SS_SetIOMap in Card Services). We configure 333 * the map speed as requested, but override the address ranges 334 * supplied by Card Services. 335 * 336 * Returns: 0 on success, -1 on error 337 */ 338 static int 339 soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map) 340 { 341 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); 342 unsigned short speed = map->speed; 343 344 debug(skt, 2, "map %u speed %u start 0x%08x stop 0x%08x\n", 345 map->map, map->speed, map->start, map->stop); 346 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", 347 (map->flags==0)?"<NONE>":"", 348 (map->flags&MAP_ACTIVE)?"ACTIVE ":"", 349 (map->flags&MAP_16BIT)?"16BIT ":"", 350 (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", 351 (map->flags&MAP_0WS)?"0WS ":"", 352 (map->flags&MAP_WRPROT)?"WRPROT ":"", 353 (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"", 354 (map->flags&MAP_PREFETCH)?"PREFETCH ":""); 355 356 if (map->map >= MAX_IO_WIN) { 357 printk(KERN_ERR "%s(): map (%d) out of range\n", __func__, 358 map->map); 359 return -1; 360 } 361 362 if (map->flags & MAP_ACTIVE) { 363 if (speed == 0) 364 speed = SOC_PCMCIA_IO_ACCESS; 365 } else { 366 speed = 0; 367 } 368 369 skt->spd_io[map->map] = speed; 370 skt->ops->set_timing(skt); 371 372 if (map->stop == 1) 373 map->stop = PAGE_SIZE-1; 374 375 map->stop -= map->start; 376 map->stop += skt->socket.io_offset; 377 map->start = skt->socket.io_offset; 378 379 return 0; 380 } 381 382 383 /* 384 * Implements the set_mem_map() operation for the in-kernel PCMCIA 385 * service (formerly SS_SetMemMap in Card Services). We configure 386 * the map speed as requested, but override the address ranges 387 * supplied by Card Services. 388 * 389 * Returns: 0 on success, -ERRNO on error 390 */ 391 static int 392 soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map) 393 { 394 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); 395 struct resource *res; 396 unsigned short speed = map->speed; 397 398 debug(skt, 2, "map %u speed %u card_start %08x\n", 399 map->map, map->speed, map->card_start); 400 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", 401 (map->flags==0)?"<NONE>":"", 402 (map->flags&MAP_ACTIVE)?"ACTIVE ":"", 403 (map->flags&MAP_16BIT)?"16BIT ":"", 404 (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", 405 (map->flags&MAP_0WS)?"0WS ":"", 406 (map->flags&MAP_WRPROT)?"WRPROT ":"", 407 (map->flags&MAP_ATTRIB)?"ATTRIB ":"", 408 (map->flags&MAP_USE_WAIT)?"USE_WAIT ":""); 409 410 if (map->map >= MAX_WIN) 411 return -EINVAL; 412 413 if (map->flags & MAP_ACTIVE) { 414 if (speed == 0) 415 speed = 300; 416 } else { 417 speed = 0; 418 } 419 420 if (map->flags & MAP_ATTRIB) { 421 res = &skt->res_attr; 422 skt->spd_attr[map->map] = speed; 423 skt->spd_mem[map->map] = 0; 424 } else { 425 res = &skt->res_mem; 426 skt->spd_attr[map->map] = 0; 427 skt->spd_mem[map->map] = speed; 428 } 429 430 skt->ops->set_timing(skt); 431 432 map->static_start = res->start + map->card_start; 433 434 return 0; 435 } 436 437 struct bittbl { 438 unsigned int mask; 439 const char *name; 440 }; 441 442 static struct bittbl status_bits[] = { 443 { SS_WRPROT, "SS_WRPROT" }, 444 { SS_BATDEAD, "SS_BATDEAD" }, 445 { SS_BATWARN, "SS_BATWARN" }, 446 { SS_READY, "SS_READY" }, 447 { SS_DETECT, "SS_DETECT" }, 448 { SS_POWERON, "SS_POWERON" }, 449 { SS_STSCHG, "SS_STSCHG" }, 450 { SS_3VCARD, "SS_3VCARD" }, 451 { SS_XVCARD, "SS_XVCARD" }, 452 }; 453 454 static struct bittbl conf_bits[] = { 455 { SS_PWR_AUTO, "SS_PWR_AUTO" }, 456 { SS_IOCARD, "SS_IOCARD" }, 457 { SS_RESET, "SS_RESET" }, 458 { SS_DMA_MODE, "SS_DMA_MODE" }, 459 { SS_SPKR_ENA, "SS_SPKR_ENA" }, 460 { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, 461 }; 462 463 static void 464 dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz) 465 { 466 char *b = *p; 467 int i; 468 469 b += sprintf(b, "%-9s:", prefix); 470 for (i = 0; i < sz; i++) 471 if (val & bits[i].mask) 472 b += sprintf(b, " %s", bits[i].name); 473 *b++ = '\n'; 474 *p = b; 475 } 476 477 /* 478 * Implements the /sys/class/pcmcia_socket/??/status file. 479 * 480 * Returns: the number of characters added to the buffer 481 */ 482 static ssize_t show_status(struct device *dev, struct device_attribute *attr, char *buf) 483 { 484 struct soc_pcmcia_socket *skt = 485 container_of(dev, struct soc_pcmcia_socket, socket.dev); 486 char *p = buf; 487 488 p+=sprintf(p, "slot : %d\n", skt->nr); 489 490 dump_bits(&p, "status", skt->status, 491 status_bits, ARRAY_SIZE(status_bits)); 492 dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, 493 status_bits, ARRAY_SIZE(status_bits)); 494 dump_bits(&p, "cs_flags", skt->cs_state.flags, 495 conf_bits, ARRAY_SIZE(conf_bits)); 496 497 p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc); 498 p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp); 499 p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq); 500 if (skt->ops->show_timing) 501 p+=skt->ops->show_timing(skt, p); 502 503 return p-buf; 504 } 505 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); 506 507 508 static struct pccard_operations soc_common_pcmcia_operations = { 509 .init = soc_common_pcmcia_sock_init, 510 .suspend = soc_common_pcmcia_suspend, 511 .get_status = soc_common_pcmcia_get_status, 512 .set_socket = soc_common_pcmcia_set_socket, 513 .set_io_map = soc_common_pcmcia_set_io_map, 514 .set_mem_map = soc_common_pcmcia_set_mem_map, 515 }; 516 517 518 int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, 519 struct pcmcia_irqs *irqs, int nr) 520 { 521 int i, res = 0; 522 523 for (i = 0; i < nr; i++) { 524 if (irqs[i].sock != skt->nr) 525 continue; 526 res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt, 527 IRQF_DISABLED, irqs[i].str, skt); 528 if (res) 529 break; 530 set_irq_type(irqs[i].irq, IRQT_NOEDGE); 531 } 532 533 if (res) { 534 printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n", 535 irqs[i].irq, res); 536 537 while (i--) 538 if (irqs[i].sock == skt->nr) 539 free_irq(irqs[i].irq, skt); 540 } 541 return res; 542 } 543 EXPORT_SYMBOL(soc_pcmcia_request_irqs); 544 545 void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, 546 struct pcmcia_irqs *irqs, int nr) 547 { 548 int i; 549 550 for (i = 0; i < nr; i++) 551 if (irqs[i].sock == skt->nr) 552 free_irq(irqs[i].irq, skt); 553 } 554 EXPORT_SYMBOL(soc_pcmcia_free_irqs); 555 556 void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, 557 struct pcmcia_irqs *irqs, int nr) 558 { 559 int i; 560 561 for (i = 0; i < nr; i++) 562 if (irqs[i].sock == skt->nr) 563 set_irq_type(irqs[i].irq, IRQT_NOEDGE); 564 } 565 EXPORT_SYMBOL(soc_pcmcia_disable_irqs); 566 567 void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, 568 struct pcmcia_irqs *irqs, int nr) 569 { 570 int i; 571 572 for (i = 0; i < nr; i++) 573 if (irqs[i].sock == skt->nr) { 574 set_irq_type(irqs[i].irq, IRQT_RISING); 575 set_irq_type(irqs[i].irq, IRQT_BOTHEDGE); 576 } 577 } 578 EXPORT_SYMBOL(soc_pcmcia_enable_irqs); 579 580 581 LIST_HEAD(soc_pcmcia_sockets); 582 static DEFINE_MUTEX(soc_pcmcia_sockets_lock); 583 584 static const char *skt_names[] = { 585 "PCMCIA socket 0", 586 "PCMCIA socket 1", 587 }; 588 589 struct skt_dev_info { 590 int nskt; 591 struct soc_pcmcia_socket skt[0]; 592 }; 593 594 #define SKT_DEV_INFO_SIZE(n) \ 595 (sizeof(struct skt_dev_info) + (n)*sizeof(struct soc_pcmcia_socket)) 596 597 #ifdef CONFIG_CPU_FREQ 598 static int 599 soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data) 600 { 601 struct soc_pcmcia_socket *skt; 602 struct cpufreq_freqs *freqs = data; 603 int ret = 0; 604 605 mutex_lock(&soc_pcmcia_sockets_lock); 606 list_for_each_entry(skt, &soc_pcmcia_sockets, node) 607 if ( skt->ops->frequency_change ) 608 ret += skt->ops->frequency_change(skt, val, freqs); 609 mutex_unlock(&soc_pcmcia_sockets_lock); 610 611 return ret; 612 } 613 614 static struct notifier_block soc_pcmcia_notifier_block = { 615 .notifier_call = soc_pcmcia_notifier 616 }; 617 618 static int soc_pcmcia_cpufreq_register(void) 619 { 620 int ret; 621 622 ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block, 623 CPUFREQ_TRANSITION_NOTIFIER); 624 if (ret < 0) 625 printk(KERN_ERR "Unable to register CPU frequency change " 626 "notifier for PCMCIA (%d)\n", ret); 627 return ret; 628 } 629 630 static void soc_pcmcia_cpufreq_unregister(void) 631 { 632 cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); 633 } 634 635 #else 636 static int soc_pcmcia_cpufreq_register(void) { return 0; } 637 static void soc_pcmcia_cpufreq_unregister(void) {} 638 #endif 639 640 int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr) 641 { 642 struct skt_dev_info *sinfo; 643 struct soc_pcmcia_socket *skt; 644 int ret, i; 645 646 mutex_lock(&soc_pcmcia_sockets_lock); 647 648 sinfo = kzalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL); 649 if (!sinfo) { 650 ret = -ENOMEM; 651 goto out; 652 } 653 654 sinfo->nskt = nr; 655 656 /* 657 * Initialise the per-socket structure. 658 */ 659 for (i = 0; i < nr; i++) { 660 skt = &sinfo->skt[i]; 661 662 skt->socket.ops = &soc_common_pcmcia_operations; 663 skt->socket.owner = ops->owner; 664 skt->socket.dev.parent = dev; 665 666 init_timer(&skt->poll_timer); 667 skt->poll_timer.function = soc_common_pcmcia_poll_event; 668 skt->poll_timer.data = (unsigned long)skt; 669 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; 670 671 skt->nr = first + i; 672 skt->irq = NO_IRQ; 673 skt->dev = dev; 674 skt->ops = ops; 675 676 skt->res_skt.start = _PCMCIA(skt->nr); 677 skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1; 678 skt->res_skt.name = skt_names[skt->nr]; 679 skt->res_skt.flags = IORESOURCE_MEM; 680 681 ret = request_resource(&iomem_resource, &skt->res_skt); 682 if (ret) 683 goto out_err_1; 684 685 skt->res_io.start = _PCMCIAIO(skt->nr); 686 skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1; 687 skt->res_io.name = "io"; 688 skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY; 689 690 ret = request_resource(&skt->res_skt, &skt->res_io); 691 if (ret) 692 goto out_err_2; 693 694 skt->res_mem.start = _PCMCIAMem(skt->nr); 695 skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1; 696 skt->res_mem.name = "memory"; 697 skt->res_mem.flags = IORESOURCE_MEM; 698 699 ret = request_resource(&skt->res_skt, &skt->res_mem); 700 if (ret) 701 goto out_err_3; 702 703 skt->res_attr.start = _PCMCIAAttr(skt->nr); 704 skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1; 705 skt->res_attr.name = "attribute"; 706 skt->res_attr.flags = IORESOURCE_MEM; 707 708 ret = request_resource(&skt->res_skt, &skt->res_attr); 709 if (ret) 710 goto out_err_4; 711 712 skt->virt_io = ioremap(skt->res_io.start, 0x10000); 713 if (skt->virt_io == NULL) { 714 ret = -ENOMEM; 715 goto out_err_5; 716 } 717 718 if (list_empty(&soc_pcmcia_sockets)) 719 soc_pcmcia_cpufreq_register(); 720 721 list_add(&skt->node, &soc_pcmcia_sockets); 722 723 /* 724 * We initialize default socket timing here, because 725 * we are not guaranteed to see a SetIOMap operation at 726 * runtime. 727 */ 728 ops->set_timing(skt); 729 730 ret = ops->hw_init(skt); 731 if (ret) 732 goto out_err_6; 733 734 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; 735 skt->socket.resource_ops = &pccard_static_ops; 736 skt->socket.irq_mask = 0; 737 skt->socket.map_size = PAGE_SIZE; 738 skt->socket.pci_irq = skt->irq; 739 skt->socket.io_offset = (unsigned long)skt->virt_io; 740 741 skt->status = soc_common_pcmcia_skt_state(skt); 742 743 ret = pcmcia_register_socket(&skt->socket); 744 if (ret) 745 goto out_err_7; 746 747 WARN_ON(skt->socket.sock != i); 748 749 add_timer(&skt->poll_timer); 750 751 device_create_file(&skt->socket.dev, &dev_attr_status); 752 } 753 754 dev_set_drvdata(dev, sinfo); 755 ret = 0; 756 goto out; 757 758 do { 759 skt = &sinfo->skt[i]; 760 761 del_timer_sync(&skt->poll_timer); 762 pcmcia_unregister_socket(&skt->socket); 763 764 out_err_7: 765 flush_scheduled_work(); 766 767 ops->hw_shutdown(skt); 768 out_err_6: 769 list_del(&skt->node); 770 iounmap(skt->virt_io); 771 out_err_5: 772 release_resource(&skt->res_attr); 773 out_err_4: 774 release_resource(&skt->res_mem); 775 out_err_3: 776 release_resource(&skt->res_io); 777 out_err_2: 778 release_resource(&skt->res_skt); 779 out_err_1: 780 i--; 781 } while (i > 0); 782 783 kfree(sinfo); 784 785 out: 786 mutex_unlock(&soc_pcmcia_sockets_lock); 787 return ret; 788 } 789 790 int soc_common_drv_pcmcia_remove(struct device *dev) 791 { 792 struct skt_dev_info *sinfo = dev_get_drvdata(dev); 793 int i; 794 795 dev_set_drvdata(dev, NULL); 796 797 mutex_lock(&soc_pcmcia_sockets_lock); 798 for (i = 0; i < sinfo->nskt; i++) { 799 struct soc_pcmcia_socket *skt = &sinfo->skt[i]; 800 801 del_timer_sync(&skt->poll_timer); 802 803 pcmcia_unregister_socket(&skt->socket); 804 805 flush_scheduled_work(); 806 807 skt->ops->hw_shutdown(skt); 808 809 soc_common_pcmcia_config_skt(skt, &dead_socket); 810 811 list_del(&skt->node); 812 iounmap(skt->virt_io); 813 skt->virt_io = NULL; 814 release_resource(&skt->res_attr); 815 release_resource(&skt->res_mem); 816 release_resource(&skt->res_io); 817 release_resource(&skt->res_skt); 818 } 819 if (list_empty(&soc_pcmcia_sockets)) 820 soc_pcmcia_cpufreq_unregister(); 821 822 mutex_unlock(&soc_pcmcia_sockets_lock); 823 824 kfree(sinfo); 825 826 return 0; 827 } 828 EXPORT_SYMBOL(soc_common_drv_pcmcia_remove); 829