1 /* $NetBSD: sdmmc.c,v 1.8 2011/02/13 06:43:51 nonaka Exp $ */ 2 /* $OpenBSD: sdmmc.c,v 1.18 2009/01/09 10:58:38 jsg Exp $ */ 3 4 /* 5 * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /*- 21 * Copyright (c) 2007-2009 NONAKA Kimihiro <nonaka@netbsd.org> 22 * All rights reserved. 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the above copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 43 * SUCH DAMAGE. 44 */ 45 46 /* 47 * Host controller independent SD/MMC bus driver based on information 48 * from SanDisk SD Card Product Manual Revision 2.2 (SanDisk), SDIO 49 * Simple Specification Version 1.0 (SDIO) and the Linux "mmc" driver. 50 */ 51 52 #include <sys/cdefs.h> 53 __KERNEL_RCSID(0, "$NetBSD: sdmmc.c,v 1.8 2011/02/13 06:43:51 nonaka Exp $"); 54 55 #include <sys/param.h> 56 #include <sys/device.h> 57 #include <sys/kernel.h> 58 #include <sys/kthread.h> 59 #include <sys/malloc.h> 60 #include <sys/proc.h> 61 #include <sys/systm.h> 62 #include <sys/callout.h> 63 64 #include <machine/vmparam.h> 65 66 #include <dev/sdmmc/sdmmc_ioreg.h> 67 #include <dev/sdmmc/sdmmcchip.h> 68 #include <dev/sdmmc/sdmmcreg.h> 69 #include <dev/sdmmc/sdmmcvar.h> 70 71 #ifdef SDMMC_DEBUG 72 int sdmmcdebug = 1; 73 static void sdmmc_dump_command(struct sdmmc_softc *, struct sdmmc_command *); 74 #define DPRINTF(n,s) do { if ((n) <= sdmmcdebug) printf s; } while (0) 75 #else 76 #define DPRINTF(n,s) do {} while (0) 77 #endif 78 79 #define DEVNAME(sc) SDMMCDEVNAME(sc) 80 81 static int sdmmc_match(device_t, cfdata_t, void *); 82 static void sdmmc_attach(device_t, device_t, void *); 83 static int sdmmc_detach(device_t, int); 84 85 CFATTACH_DECL_NEW(sdmmc, sizeof(struct sdmmc_softc), 86 sdmmc_match, sdmmc_attach, sdmmc_detach, NULL); 87 88 static void sdmmc_doattach(device_t); 89 static void sdmmc_task_thread(void *); 90 static void sdmmc_discover_task(void *); 91 static void sdmmc_polling_card(void *); 92 static void sdmmc_card_attach(struct sdmmc_softc *); 93 static void sdmmc_card_detach(struct sdmmc_softc *, int); 94 static int sdmmc_print(void *, const char *); 95 static int sdmmc_enable(struct sdmmc_softc *); 96 static void sdmmc_disable(struct sdmmc_softc *); 97 static int sdmmc_scan(struct sdmmc_softc *); 98 static int sdmmc_init(struct sdmmc_softc *); 99 100 static int 101 sdmmc_match(device_t parent, cfdata_t cf, void *aux) 102 { 103 struct sdmmcbus_attach_args *saa = (struct sdmmcbus_attach_args *)aux; 104 105 if (strcmp(saa->saa_busname, cf->cf_name) == 0) 106 return 1; 107 return 0; 108 } 109 110 static void 111 sdmmc_attach(device_t parent, device_t self, void *aux) 112 { 113 struct sdmmc_softc *sc = device_private(self); 114 struct sdmmcbus_attach_args *saa = (struct sdmmcbus_attach_args *)aux; 115 int error; 116 117 aprint_normal("\n"); 118 aprint_naive("\n"); 119 120 sc->sc_dev = self; 121 sc->sc_sct = saa->saa_sct; 122 sc->sc_spi_sct = saa->saa_spi_sct; 123 sc->sc_sch = saa->saa_sch; 124 sc->sc_dmat = saa->saa_dmat; 125 sc->sc_clkmin = saa->saa_clkmin; 126 sc->sc_clkmax = saa->saa_clkmax; 127 sc->sc_busclk = sc->sc_clkmax; 128 sc->sc_buswidth = 1; 129 sc->sc_caps = saa->saa_caps; 130 131 if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { 132 error = bus_dmamap_create(sc->sc_dmat, MAXPHYS, SDMMC_MAXNSEGS, 133 MAXPHYS, 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &sc->sc_dmap); 134 if (error) { 135 aprint_error_dev(sc->sc_dev, 136 "couldn't create dma map. (error=%d)\n", error); 137 return; 138 } 139 } 140 141 if (ISSET(sc->sc_caps, SMC_CAPS_POLL_CARD_DET)) { 142 callout_init(&sc->sc_card_detect_ch, 0); 143 callout_reset(&sc->sc_card_detect_ch, hz, 144 sdmmc_polling_card, sc); 145 } 146 147 SIMPLEQ_INIT(&sc->sf_head); 148 TAILQ_INIT(&sc->sc_tskq); 149 TAILQ_INIT(&sc->sc_intrq); 150 151 sdmmc_init_task(&sc->sc_discover_task, sdmmc_discover_task, sc); 152 sdmmc_init_task(&sc->sc_intr_task, sdmmc_intr_task, sc); 153 154 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_SDMMC); 155 mutex_init(&sc->sc_tskq_mtx, MUTEX_DEFAULT, IPL_SDMMC); 156 mutex_init(&sc->sc_discover_task_mtx, MUTEX_DEFAULT, IPL_SDMMC); 157 mutex_init(&sc->sc_intr_task_mtx, MUTEX_DEFAULT, IPL_SDMMC); 158 cv_init(&sc->sc_tskq_cv, "mmctaskq"); 159 160 if (!pmf_device_register(self, NULL, NULL)) { 161 aprint_error_dev(self, "couldn't establish power handler\n"); 162 } 163 164 SET(sc->sc_flags, SMF_INITED); 165 166 /* 167 * Create the event thread that will attach and detach cards 168 * and perform other lengthy operations. 169 */ 170 config_pending_incr(); 171 config_interrupts(self, sdmmc_doattach); 172 } 173 174 static int 175 sdmmc_detach(device_t self, int flags) 176 { 177 struct sdmmc_softc *sc = device_private(self); 178 int error; 179 180 mutex_enter(&sc->sc_tskq_mtx); 181 sc->sc_dying = 1; 182 cv_signal(&sc->sc_tskq_cv); 183 while (sc->sc_tskq_lwp != NULL) 184 cv_wait(&sc->sc_tskq_cv, &sc->sc_tskq_mtx); 185 mutex_exit(&sc->sc_tskq_mtx); 186 187 pmf_device_deregister(self); 188 189 error = config_detach_children(self, flags); 190 if (error) 191 return error; 192 return 0; 193 } 194 195 static void 196 sdmmc_doattach(device_t dev) 197 { 198 struct sdmmc_softc *sc = device_private(dev); 199 200 if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, 201 sdmmc_task_thread, sc, &sc->sc_tskq_lwp, "%s", device_xname(dev))) { 202 aprint_error_dev(dev, "couldn't create task thread\n"); 203 } 204 } 205 206 void 207 sdmmc_add_task(struct sdmmc_softc *sc, struct sdmmc_task *task) 208 { 209 210 mutex_enter(&sc->sc_tskq_mtx); 211 task->onqueue = 1; 212 task->sc = sc; 213 TAILQ_INSERT_TAIL(&sc->sc_tskq, task, next); 214 cv_broadcast(&sc->sc_tskq_cv); 215 mutex_exit(&sc->sc_tskq_mtx); 216 } 217 218 static inline void 219 sdmmc_del_task1(struct sdmmc_softc *sc, struct sdmmc_task *task) 220 { 221 222 TAILQ_REMOVE(&sc->sc_tskq, task, next); 223 task->sc = NULL; 224 task->onqueue = 0; 225 } 226 227 void 228 sdmmc_del_task(struct sdmmc_task *task) 229 { 230 struct sdmmc_softc *sc = (struct sdmmc_softc *)task->sc; 231 232 if (sc != NULL) { 233 mutex_enter(&sc->sc_tskq_mtx); 234 sdmmc_del_task1(sc, task); 235 mutex_exit(&sc->sc_tskq_mtx); 236 } 237 } 238 239 static void 240 sdmmc_task_thread(void *arg) 241 { 242 struct sdmmc_softc *sc = (struct sdmmc_softc *)arg; 243 struct sdmmc_task *task; 244 245 sdmmc_discover_task(sc); 246 config_pending_decr(); 247 248 mutex_enter(&sc->sc_tskq_mtx); 249 for (;;) { 250 task = TAILQ_FIRST(&sc->sc_tskq); 251 if (task != NULL) { 252 sdmmc_del_task1(sc, task); 253 mutex_exit(&sc->sc_tskq_mtx); 254 (*task->func)(task->arg); 255 mutex_enter(&sc->sc_tskq_mtx); 256 } else { 257 /* Check for the exit condition. */ 258 if (sc->sc_dying) 259 break; 260 cv_wait(&sc->sc_tskq_cv, &sc->sc_tskq_mtx); 261 } 262 } 263 /* time to die. */ 264 sc->sc_dying = 0; 265 if (ISSET(sc->sc_flags, SMF_CARD_PRESENT)) 266 sdmmc_card_detach(sc, DETACH_FORCE); 267 sc->sc_tskq_lwp = NULL; 268 cv_broadcast(&sc->sc_tskq_cv); 269 mutex_exit(&sc->sc_tskq_mtx); 270 kthread_exit(0); 271 } 272 273 void 274 sdmmc_needs_discover(device_t dev) 275 { 276 struct sdmmc_softc *sc = device_private(dev); 277 278 if (!ISSET(sc->sc_flags, SMF_INITED)) 279 return; 280 281 mutex_enter(&sc->sc_discover_task_mtx); 282 if (!sdmmc_task_pending(&sc->sc_discover_task)) 283 sdmmc_add_task(sc, &sc->sc_discover_task); 284 mutex_exit(&sc->sc_discover_task_mtx); 285 } 286 287 static void 288 sdmmc_discover_task(void *arg) 289 { 290 struct sdmmc_softc *sc = (struct sdmmc_softc *)arg; 291 292 if (sdmmc_chip_card_detect(sc->sc_sct, sc->sc_sch)) { 293 if (!ISSET(sc->sc_flags, SMF_CARD_PRESENT)) { 294 SET(sc->sc_flags, SMF_CARD_PRESENT); 295 sdmmc_card_attach(sc); 296 if (!ISSET(sc->sc_flags, SMF_CARD_ATTACHED)) 297 CLR(sc->sc_flags, SMF_CARD_PRESENT); 298 } 299 } else { 300 if (ISSET(sc->sc_flags, SMF_CARD_PRESENT)) { 301 CLR(sc->sc_flags, SMF_CARD_PRESENT); 302 sdmmc_card_detach(sc, DETACH_FORCE); 303 } 304 } 305 } 306 307 static void 308 sdmmc_polling_card(void *arg) 309 { 310 struct sdmmc_softc *sc = (struct sdmmc_softc *)arg; 311 int card_detect; 312 int s; 313 314 s = splsdmmc(); 315 card_detect = sdmmc_chip_card_detect(sc->sc_sct, sc->sc_sch); 316 if (card_detect) { 317 if (!ISSET(sc->sc_flags, SMF_CARD_PRESENT)) { 318 sdmmc_needs_discover(sc->sc_dev); 319 } 320 } else { 321 if (ISSET(sc->sc_flags, SMF_CARD_PRESENT)) { 322 sdmmc_needs_discover(sc->sc_dev); 323 } 324 } 325 splx(s); 326 327 callout_schedule(&sc->sc_card_detect_ch, hz); 328 } 329 330 /* 331 * Called from process context when a card is present. 332 */ 333 static void 334 sdmmc_card_attach(struct sdmmc_softc *sc) 335 { 336 struct sdmmc_function *sf; 337 struct sdmmc_attach_args saa; 338 int error; 339 340 DPRINTF(1,("%s: attach card\n", DEVNAME(sc))); 341 342 CLR(sc->sc_flags, SMF_CARD_ATTACHED); 343 344 /* 345 * Power up the card (or card stack). 346 */ 347 error = sdmmc_enable(sc); 348 if (error) { 349 aprint_error_dev(sc->sc_dev, "couldn't enable card\n"); 350 goto err; 351 } 352 353 /* 354 * Scan for I/O functions and memory cards on the bus, 355 * allocating a sdmmc_function structure for each. 356 */ 357 error = sdmmc_scan(sc); 358 if (error) { 359 aprint_error_dev(sc->sc_dev, "no functions\n"); 360 goto err; 361 } 362 363 /* 364 * Initialize the I/O functions and memory cards. 365 */ 366 error = sdmmc_init(sc); 367 if (error) { 368 aprint_error_dev(sc->sc_dev, "init failed\n"); 369 goto err; 370 } 371 372 SIMPLEQ_FOREACH(sf, &sc->sf_head, sf_list) { 373 if (ISSET(sc->sc_flags, SMF_IO_MODE) && sf->number < 1) 374 continue; 375 376 memset(&saa, 0, sizeof saa); 377 saa.manufacturer = sf->cis.manufacturer; 378 saa.product = sf->cis.product; 379 saa.interface = sf->interface; 380 saa.sf = sf; 381 382 sf->child = 383 config_found_ia(sc->sc_dev, "sdmmc", &saa, sdmmc_print); 384 } 385 386 SET(sc->sc_flags, SMF_CARD_ATTACHED); 387 return; 388 389 err: 390 sdmmc_card_detach(sc, DETACH_FORCE); 391 } 392 393 /* 394 * Called from process context with DETACH_* flags from <sys/device.h> 395 * when cards are gone. 396 */ 397 static void 398 sdmmc_card_detach(struct sdmmc_softc *sc, int flags) 399 { 400 struct sdmmc_function *sf, *sfnext; 401 402 DPRINTF(1,("%s: detach card\n", DEVNAME(sc))); 403 404 if (ISSET(sc->sc_flags, SMF_CARD_ATTACHED)) { 405 SIMPLEQ_FOREACH(sf, &sc->sf_head, sf_list) { 406 if (sf->child != NULL) { 407 config_detach(sf->child, DETACH_FORCE); 408 sf->child = NULL; 409 } 410 } 411 412 KASSERT(TAILQ_EMPTY(&sc->sc_intrq)); 413 414 CLR(sc->sc_flags, SMF_CARD_ATTACHED); 415 } 416 417 /* Power down. */ 418 sdmmc_disable(sc); 419 420 /* Free all sdmmc_function structures. */ 421 for (sf = SIMPLEQ_FIRST(&sc->sf_head); sf != NULL; sf = sfnext) { 422 sfnext = SIMPLEQ_NEXT(sf, sf_list); 423 sdmmc_function_free(sf); 424 } 425 SIMPLEQ_INIT(&sc->sf_head); 426 sc->sc_function_count = 0; 427 sc->sc_fn0 = NULL; 428 } 429 430 static int 431 sdmmc_print(void *aux, const char *pnp) 432 { 433 struct sdmmc_attach_args *sa = aux; 434 struct sdmmc_function *sf = sa->sf; 435 struct sdmmc_cis *cis = &sf->sc->sc_fn0->cis; 436 int i; 437 438 if (pnp) { 439 if (sf->number == 0) 440 return QUIET; 441 442 for (i = 0; i < 4 && cis->cis1_info[i]; i++) 443 printf("%s%s", i ? ", " : "\"", cis->cis1_info[i]); 444 if (i != 0) 445 printf("\""); 446 447 if (cis->manufacturer != SDMMC_VENDOR_INVALID && 448 cis->product != SDMMC_PRODUCT_INVALID) { 449 printf("%s(", i ? " " : ""); 450 if (cis->manufacturer != SDMMC_VENDOR_INVALID) 451 printf("manufacturer 0x%x%s", 452 cis->manufacturer, 453 cis->product == SDMMC_PRODUCT_INVALID ? 454 "" : ", "); 455 if (cis->product != SDMMC_PRODUCT_INVALID) 456 printf("product 0x%x", cis->product); 457 printf(")"); 458 } 459 printf("%sat %s", i ? " " : "", pnp); 460 } 461 if (sf->number > 0) 462 printf(" function %d", sf->number); 463 464 if (!pnp) { 465 for (i = 0; i < 3 && cis->cis1_info[i]; i++) 466 printf("%s%s", i ? ", " : " \"", cis->cis1_info[i]); 467 if (i != 0) 468 printf("\""); 469 } 470 return UNCONF; 471 } 472 473 static int 474 sdmmc_enable(struct sdmmc_softc *sc) 475 { 476 int error; 477 478 /* 479 * Calculate the equivalent of the card OCR from the host 480 * capabilities and select the maximum supported bus voltage. 481 */ 482 error = sdmmc_chip_bus_power(sc->sc_sct, sc->sc_sch, 483 sdmmc_chip_host_ocr(sc->sc_sct, sc->sc_sch)); 484 if (error) { 485 aprint_error_dev(sc->sc_dev, "couldn't supply bus power\n"); 486 goto out; 487 } 488 489 /* 490 * Select the minimum clock frequency. 491 */ 492 error = sdmmc_chip_bus_clock(sc->sc_sct, sc->sc_sch, SDMMC_SDCLK_400K); 493 if (error) { 494 aprint_error_dev(sc->sc_dev, "couldn't supply clock\n"); 495 goto out; 496 } 497 498 /* XXX wait for card to power up */ 499 sdmmc_delay(100000); 500 501 if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { 502 /* Initialize SD I/O card function(s). */ 503 error = sdmmc_io_enable(sc); 504 if (error) 505 goto out; 506 } 507 508 /* Initialize SD/MMC memory card(s). */ 509 if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE) || 510 ISSET(sc->sc_flags, SMF_MEM_MODE)) 511 error = sdmmc_mem_enable(sc); 512 513 out: 514 if (error) 515 sdmmc_disable(sc); 516 return error; 517 } 518 519 static void 520 sdmmc_disable(struct sdmmc_softc *sc) 521 { 522 /* XXX complete commands if card is still present. */ 523 524 if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { 525 /* Make sure no card is still selected. */ 526 (void)sdmmc_select_card(sc, NULL); 527 } 528 529 /* Turn off bus power and clock. */ 530 (void)sdmmc_chip_bus_width(sc->sc_sct, sc->sc_sch, 1); 531 (void)sdmmc_chip_bus_clock(sc->sc_sct, sc->sc_sch, SDMMC_SDCLK_OFF); 532 (void)sdmmc_chip_bus_power(sc->sc_sct, sc->sc_sch, 0); 533 sc->sc_busclk = sc->sc_clkmax; 534 } 535 536 /* 537 * Set the lowest bus voltage supported by the card and the host. 538 */ 539 int 540 sdmmc_set_bus_power(struct sdmmc_softc *sc, uint32_t host_ocr, 541 uint32_t card_ocr) 542 { 543 uint32_t bit; 544 545 /* Mask off unsupported voltage levels and select the lowest. */ 546 DPRINTF(1,("%s: host_ocr=%x ", DEVNAME(sc), host_ocr)); 547 host_ocr &= card_ocr; 548 for (bit = 4; bit < 23; bit++) { 549 if (ISSET(host_ocr, (1 << bit))) { 550 host_ocr &= (3 << bit); 551 break; 552 } 553 } 554 DPRINTF(1,("card_ocr=%x new_ocr=%x\n", card_ocr, host_ocr)); 555 556 if (host_ocr == 0 || 557 sdmmc_chip_bus_power(sc->sc_sct, sc->sc_sch, host_ocr) != 0) 558 return 1; 559 return 0; 560 } 561 562 struct sdmmc_function * 563 sdmmc_function_alloc(struct sdmmc_softc *sc) 564 { 565 struct sdmmc_function *sf; 566 567 sf = malloc(sizeof *sf, M_DEVBUF, M_WAITOK|M_ZERO); 568 if (sf == NULL) { 569 aprint_error_dev(sc->sc_dev, 570 "couldn't alloc memory (sdmmc function)\n"); 571 return NULL; 572 } 573 574 sf->sc = sc; 575 sf->number = -1; 576 sf->cis.manufacturer = SDMMC_VENDOR_INVALID; 577 sf->cis.product = SDMMC_PRODUCT_INVALID; 578 sf->cis.function = SDMMC_FUNCTION_INVALID; 579 sf->width = 1; 580 581 if (ISSET(sc->sc_flags, SMF_MEM_MODE) && 582 ISSET(sc->sc_caps, SMC_CAPS_DMA) && 583 !ISSET(sc->sc_caps, SMC_CAPS_MULTI_SEG_DMA)) { 584 bus_dma_segment_t ds; 585 int rseg, error; 586 587 error = bus_dmamap_create(sc->sc_dmat, SDMMC_SECTOR_SIZE, 1, 588 SDMMC_SECTOR_SIZE, 0, BUS_DMA_WAITOK, &sf->bbuf_dmap); 589 if (error) 590 goto fail1; 591 error = bus_dmamem_alloc(sc->sc_dmat, SDMMC_SECTOR_SIZE, 592 PAGE_SIZE, 0, &ds, 1, &rseg, BUS_DMA_WAITOK); 593 if (error) 594 goto fail2; 595 error = bus_dmamem_map(sc->sc_dmat, &ds, 1, SDMMC_SECTOR_SIZE, 596 &sf->bbuf, BUS_DMA_WAITOK); 597 if (error) 598 goto fail3; 599 error = bus_dmamap_load(sc->sc_dmat, sf->bbuf_dmap, 600 sf->bbuf, SDMMC_SECTOR_SIZE, NULL, 601 BUS_DMA_WAITOK|BUS_DMA_READ|BUS_DMA_WRITE); 602 if (!error) 603 goto out; 604 605 bus_dmamem_unmap(sc->sc_dmat, sf->bbuf, SDMMC_SECTOR_SIZE); 606 fail3: 607 bus_dmamem_free(sc->sc_dmat, &ds, 1); 608 fail2: 609 bus_dmamap_destroy(sc->sc_dmat, sf->bbuf_dmap); 610 fail1: 611 free(sf, M_DEVBUF); 612 sf = NULL; 613 } 614 out: 615 616 return sf; 617 } 618 619 void 620 sdmmc_function_free(struct sdmmc_function *sf) 621 { 622 struct sdmmc_softc *sc = sf->sc; 623 624 if (ISSET(sc->sc_flags, SMF_MEM_MODE) && 625 ISSET(sc->sc_caps, SMC_CAPS_DMA) && 626 !ISSET(sc->sc_caps, SMC_CAPS_MULTI_SEG_DMA)) { 627 bus_dmamap_unload(sc->sc_dmat, sf->bbuf_dmap); 628 bus_dmamem_unmap(sc->sc_dmat, sf->bbuf, SDMMC_SECTOR_SIZE); 629 bus_dmamem_free(sc->sc_dmat, 630 sf->bbuf_dmap->dm_segs, sf->bbuf_dmap->dm_nsegs); 631 bus_dmamap_destroy(sc->sc_dmat, sf->bbuf_dmap); 632 } 633 634 free(sf, M_DEVBUF); 635 } 636 637 /* 638 * Scan for I/O functions and memory cards on the bus, allocating a 639 * sdmmc_function structure for each. 640 */ 641 static int 642 sdmmc_scan(struct sdmmc_softc *sc) 643 { 644 645 if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { 646 /* Scan for I/O functions. */ 647 if (ISSET(sc->sc_flags, SMF_IO_MODE)) 648 sdmmc_io_scan(sc); 649 } 650 651 /* Scan for memory cards on the bus. */ 652 if (ISSET(sc->sc_flags, SMF_MEM_MODE)) 653 sdmmc_mem_scan(sc); 654 655 /* There should be at least one function now. */ 656 if (SIMPLEQ_EMPTY(&sc->sf_head)) { 657 aprint_error_dev(sc->sc_dev, "couldn't identify card\n"); 658 return 1; 659 } 660 return 0; 661 } 662 663 /* 664 * Initialize all the distinguished functions of the card, be it I/O 665 * or memory functions. 666 */ 667 static int 668 sdmmc_init(struct sdmmc_softc *sc) 669 { 670 struct sdmmc_function *sf; 671 672 /* Initialize all identified card functions. */ 673 SIMPLEQ_FOREACH(sf, &sc->sf_head, sf_list) { 674 if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { 675 if (ISSET(sc->sc_flags, SMF_IO_MODE) && 676 sdmmc_io_init(sc, sf) != 0) { 677 aprint_error_dev(sc->sc_dev, 678 "i/o init failed\n"); 679 } 680 } 681 682 if (ISSET(sc->sc_flags, SMF_MEM_MODE) && 683 sdmmc_mem_init(sc, sf) != 0) { 684 aprint_error_dev(sc->sc_dev, "mem init failed\n"); 685 } 686 } 687 688 /* Any good functions left after initialization? */ 689 SIMPLEQ_FOREACH(sf, &sc->sf_head, sf_list) { 690 if (!ISSET(sf->flags, SFF_ERROR)) 691 return 0; 692 } 693 694 /* No, we should probably power down the card. */ 695 return 1; 696 } 697 698 void 699 sdmmc_delay(u_int usecs) 700 { 701 702 delay(usecs); 703 } 704 705 int 706 sdmmc_app_command(struct sdmmc_softc *sc, struct sdmmc_function *sf, struct sdmmc_command *cmd) 707 { 708 struct sdmmc_command acmd; 709 int error; 710 711 DPRINTF(1,("sdmmc_app_command: start\n")); 712 713 /* Don't lock */ 714 715 memset(&acmd, 0, sizeof(acmd)); 716 acmd.c_opcode = MMC_APP_CMD; 717 if (sf != NULL) { 718 acmd.c_arg = sf->rca << 16; 719 acmd.c_flags = SCF_CMD_AC | SCF_RSP_R1 | SCF_RSP_SPI_R1; 720 } else { 721 acmd.c_arg = 0; 722 acmd.c_flags = SCF_CMD_BCR | SCF_RSP_R1 | SCF_RSP_SPI_R1; 723 } 724 725 error = sdmmc_mmc_command(sc, &acmd); 726 if (error == 0) { 727 if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE) && 728 !ISSET(MMC_R1(acmd.c_resp), MMC_R1_APP_CMD)) { 729 /* Card does not support application commands. */ 730 error = ENODEV; 731 } else { 732 error = sdmmc_mmc_command(sc, cmd); 733 } 734 } 735 DPRINTF(1,("sdmmc_app_command: done (error=%d)\n", error)); 736 return error; 737 } 738 739 /* 740 * Execute MMC command and data transfers. All interactions with the 741 * host controller to complete the command happen in the context of 742 * the current process. 743 */ 744 int 745 sdmmc_mmc_command(struct sdmmc_softc *sc, struct sdmmc_command *cmd) 746 { 747 int error; 748 749 DPRINTF(1,("sdmmc_mmc_command: cmd=%d, arg=%#x, flags=%#x\n", 750 cmd->c_opcode, cmd->c_arg, cmd->c_flags)); 751 752 /* Don't lock */ 753 754 #if defined(DIAGNOSTIC) || defined(SDMMC_DEBUG) 755 if (cmd->c_data && !ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { 756 if (sc->sc_card == NULL) 757 panic("%s: deselected card\n", DEVNAME(sc)); 758 } 759 #endif 760 761 sdmmc_chip_exec_command(sc->sc_sct, sc->sc_sch, cmd); 762 763 #ifdef SDMMC_DEBUG 764 sdmmc_dump_command(sc, cmd); 765 #endif 766 767 error = cmd->c_error; 768 769 DPRINTF(1,("sdmmc_mmc_command: error=%d\n", error)); 770 771 return error; 772 } 773 774 /* 775 * Send the "GO IDLE STATE" command. 776 */ 777 void 778 sdmmc_go_idle_state(struct sdmmc_softc *sc) 779 { 780 struct sdmmc_command cmd; 781 782 DPRINTF(1,("sdmmc_go_idle_state\n")); 783 784 /* Don't lock */ 785 786 memset(&cmd, 0, sizeof(cmd)); 787 cmd.c_opcode = MMC_GO_IDLE_STATE; 788 cmd.c_flags = SCF_CMD_BC | SCF_RSP_R0 | SCF_RSP_SPI_R1; 789 790 (void)sdmmc_mmc_command(sc, &cmd); 791 } 792 793 /* 794 * Retrieve (SD) or set (MMC) the relative card address (RCA). 795 */ 796 int 797 sdmmc_set_relative_addr(struct sdmmc_softc *sc, struct sdmmc_function *sf) 798 { 799 struct sdmmc_command cmd; 800 int error; 801 802 /* Don't lock */ 803 804 if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) 805 return EIO; 806 807 memset(&cmd, 0, sizeof(cmd)); 808 if (ISSET(sc->sc_flags, SMF_SD_MODE)) { 809 cmd.c_opcode = SD_SEND_RELATIVE_ADDR; 810 cmd.c_flags = SCF_CMD_BCR | SCF_RSP_R6; 811 } else { 812 cmd.c_opcode = MMC_SET_RELATIVE_ADDR; 813 cmd.c_arg = MMC_ARG_RCA(sf->rca); 814 cmd.c_flags = SCF_CMD_AC | SCF_RSP_R1; 815 } 816 error = sdmmc_mmc_command(sc, &cmd); 817 if (error) 818 return error; 819 820 if (ISSET(sc->sc_flags, SMF_SD_MODE)) 821 sf->rca = SD_R6_RCA(cmd.c_resp); 822 823 return 0; 824 } 825 826 int 827 sdmmc_select_card(struct sdmmc_softc *sc, struct sdmmc_function *sf) 828 { 829 struct sdmmc_command cmd; 830 int error; 831 832 /* Don't lock */ 833 834 if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) 835 return EIO; 836 837 if (sc->sc_card == sf 838 || (sf && sc->sc_card && sc->sc_card->rca == sf->rca)) { 839 sc->sc_card = sf; 840 return 0; 841 } 842 843 memset(&cmd, 0, sizeof(cmd)); 844 cmd.c_opcode = MMC_SELECT_CARD; 845 cmd.c_arg = (sf == NULL) ? 0 : MMC_ARG_RCA(sf->rca); 846 cmd.c_flags = SCF_CMD_AC | ((sf == NULL) ? SCF_RSP_R0 : SCF_RSP_R1); 847 error = sdmmc_mmc_command(sc, &cmd); 848 if (error == 0 || sf == NULL) 849 sc->sc_card = sf; 850 851 return error; 852 } 853 854 #ifdef SDMMC_DEBUG 855 static void 856 sdmmc_dump_command(struct sdmmc_softc *sc, struct sdmmc_command *cmd) 857 { 858 int i; 859 860 DPRINTF(1,("%s: cmd %u arg=%#x data=%p dlen=%d flags=%#x (error %d)\n", 861 DEVNAME(sc), cmd->c_opcode, cmd->c_arg, cmd->c_data, 862 cmd->c_datalen, cmd->c_flags, cmd->c_error)); 863 864 if (cmd->c_error || sdmmcdebug < 1) 865 return; 866 867 aprint_normal_dev(sc->sc_dev, "resp="); 868 if (ISSET(cmd->c_flags, SCF_RSP_136)) 869 for (i = 0; i < sizeof cmd->c_resp; i++) 870 aprint_normal("%02x ", ((uint8_t *)cmd->c_resp)[i]); 871 else if (ISSET(cmd->c_flags, SCF_RSP_PRESENT)) 872 for (i = 0; i < 4; i++) 873 aprint_normal("%02x ", ((uint8_t *)cmd->c_resp)[i]); 874 else 875 aprint_normal("none"); 876 aprint_normal("\n"); 877 } 878 879 void 880 sdmmc_dump_data(const char *title, void *ptr, size_t size) 881 { 882 char buf[16]; 883 uint8_t *p = ptr; 884 int i, j; 885 886 printf("sdmmc_dump_data: %s\n", title ? title : ""); 887 printf("--------+--------------------------------------------------+------------------+\n"); 888 printf("offset | +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +a +b +c +d +e +f | data |\n"); 889 printf("--------+--------------------------------------------------+------------------+\n"); 890 for (i = 0; i < (int)size; i++) { 891 if ((i % 16) == 0) { 892 printf("%08x| ", i); 893 } else if ((i % 16) == 8) { 894 printf(" "); 895 } 896 897 printf("%02x ", p[i]); 898 buf[i % 16] = p[i]; 899 900 if ((i % 16) == 15) { 901 printf("| "); 902 for (j = 0; j < 16; j++) { 903 if (buf[j] >= 0x20 && buf[j] <= 0x7e) { 904 printf("%c", buf[j]); 905 } else { 906 printf("."); 907 } 908 } 909 printf(" |\n"); 910 } 911 } 912 if ((i % 16) != 0) { 913 j = (i % 16); 914 for (; j < 16; j++) { 915 printf(" "); 916 if ((j % 16) == 8) { 917 printf(" "); 918 } 919 } 920 921 printf("| "); 922 for (j = 0; j < (i % 16); j++) { 923 if (buf[j] >= 0x20 && buf[j] <= 0x7e) { 924 printf("%c", buf[j]); 925 } else { 926 printf("."); 927 } 928 } 929 for (; j < 16; j++) { 930 printf(" "); 931 } 932 printf(" |\n"); 933 } 934 printf("--------+--------------------------------------------------+------------------+\n"); 935 } 936 #endif 937