1 /*- 2 * Copyright (c) 2006 Bernd Walter. All rights reserved. 3 * Copyright (c) 2006 M. Warner Losh. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * Portions of this software may have been developed with reference to 26 * the SD Simplified Specification. The following disclaimer may apply: 27 * 28 * The following conditions apply to the release of the simplified 29 * specification ("Simplified Specification") by the SD Card Association and 30 * the SD Group. The Simplified Specification is a subset of the complete SD 31 * Specification which is owned by the SD Card Association and the SD 32 * Group. This Simplified Specification is provided on a non-confidential 33 * basis subject to the disclaimers below. Any implementation of the 34 * Simplified Specification may require a license from the SD Card 35 * Association, SD Group, SD-3C LLC or other third parties. 36 * 37 * Disclaimers: 38 * 39 * The information contained in the Simplified Specification is presented only 40 * as a standard specification for SD Cards and SD Host/Ancillary products and 41 * is provided "AS-IS" without any representations or warranties of any 42 * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD 43 * Card Association for any damages, any infringements of patents or other 44 * right of the SD Group, SD-3C LLC, the SD Card Association or any third 45 * parties, which may result from its use. No license is granted by 46 * implication, estoppel or otherwise under any patent or other rights of the 47 * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing 48 * herein shall be construed as an obligation by the SD Group, the SD-3C LLC 49 * or the SD Card Association to disclose or distribute any technical 50 * information, know-how or other confidential information to any third party. 51 */ 52 53 #include <sys/cdefs.h> 54 __FBSDID("$FreeBSD$"); 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/malloc.h> 60 #include <sys/lock.h> 61 #include <sys/module.h> 62 #include <sys/mutex.h> 63 #include <sys/bus.h> 64 #include <sys/endian.h> 65 #include <sys/sysctl.h> 66 67 #include <dev/mmc/mmcreg.h> 68 #include <dev/mmc/mmcbrvar.h> 69 #include <dev/mmc/mmcvar.h> 70 #include "mmcbr_if.h" 71 #include "mmcbus_if.h" 72 73 struct mmc_softc { 74 device_t dev; 75 struct mtx sc_mtx; 76 struct intr_config_hook config_intrhook; 77 device_t owner; 78 uint32_t last_rca; 79 }; 80 81 /* 82 * Per-card data 83 */ 84 struct mmc_ivars { 85 uint32_t raw_cid[4]; /* Raw bits of the CID */ 86 uint32_t raw_csd[4]; /* Raw bits of the CSD */ 87 uint32_t raw_scr[2]; /* Raw bits of the SCR */ 88 uint8_t raw_ext_csd[512]; /* Raw bits of the EXT_CSD */ 89 uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */ 90 uint16_t rca; 91 enum mmc_card_mode mode; 92 struct mmc_cid cid; /* cid decoded */ 93 struct mmc_csd csd; /* csd decoded */ 94 struct mmc_scr scr; /* scr decoded */ 95 struct mmc_sd_status sd_status; /* SD_STATUS decoded */ 96 u_char read_only; /* True when the device is read-only */ 97 u_char bus_width; /* Bus width to use */ 98 u_char timing; /* Bus timing support */ 99 u_char high_cap; /* High Capacity card (block addressed) */ 100 uint32_t sec_count; /* Card capacity in 512byte blocks */ 101 uint32_t tran_speed; /* Max speed in normal mode */ 102 uint32_t hs_tran_speed; /* Max speed in high speed mode */ 103 uint32_t erase_sector; /* Card native erase sector size */ 104 char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */ 105 char card_sn_string[16];/* Formatted serial # for disk->d_ident */ 106 }; 107 108 #define CMD_RETRIES 3 109 110 #define CARD_ID_FREQUENCY 400000 /* Spec requires 400kHz max during ID phase. */ 111 112 static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver"); 113 114 static int mmc_debug; 115 SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level"); 116 117 /* bus entry points */ 118 static int mmc_acquire_bus(device_t busdev, device_t dev); 119 static int mmc_attach(device_t dev); 120 static int mmc_child_location_str(device_t dev, device_t child, char *buf, 121 size_t buflen); 122 static int mmc_detach(device_t dev); 123 static int mmc_probe(device_t dev); 124 static int mmc_read_ivar(device_t bus, device_t child, int which, 125 uintptr_t *result); 126 static int mmc_release_bus(device_t busdev, device_t dev); 127 static int mmc_resume(device_t dev); 128 static int mmc_suspend(device_t dev); 129 static int mmc_wait_for_request(device_t brdev, device_t reqdev, 130 struct mmc_request *req); 131 static int mmc_write_ivar(device_t bus, device_t child, int which, 132 uintptr_t value); 133 134 #define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 135 #define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 136 #define MMC_LOCK_INIT(_sc) \ 137 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \ 138 "mmc", MTX_DEF) 139 #define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx); 140 #define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED); 141 #define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED); 142 143 static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid); 144 static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr); 145 static void mmc_app_decode_sd_status(uint32_t *raw_sd_status, 146 struct mmc_sd_status *sd_status); 147 static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, 148 uint32_t *rawsdstatus); 149 static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, 150 uint32_t *rawscr); 151 static int mmc_calculate_clock(struct mmc_softc *sc); 152 static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid); 153 static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid); 154 static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd); 155 static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd); 156 static void mmc_delayed_attach(void *xsc); 157 static int mmc_delete_cards(struct mmc_softc *sc); 158 static void mmc_discover_cards(struct mmc_softc *sc); 159 static void mmc_format_card_id_string(struct mmc_ivars *ivar); 160 static void mmc_go_discovery(struct mmc_softc *sc); 161 static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start, 162 int size); 163 static int mmc_highest_voltage(uint32_t ocr); 164 static void mmc_idle_cards(struct mmc_softc *sc); 165 static void mmc_ms_delay(int ms); 166 static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard); 167 static void mmc_power_down(struct mmc_softc *sc); 168 static void mmc_power_up(struct mmc_softc *sc); 169 static void mmc_rescan_cards(struct mmc_softc *sc); 170 static void mmc_scan(struct mmc_softc *sc); 171 static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, 172 uint8_t value, uint8_t *res); 173 static int mmc_select_card(struct mmc_softc *sc, uint16_t rca); 174 static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr); 175 static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, 176 uint32_t *rocr); 177 static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd); 178 static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd); 179 static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs); 180 static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, 181 uint32_t *rocr); 182 static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp); 183 static int mmc_send_status(struct mmc_softc *sc, uint16_t rca, 184 uint32_t *status); 185 static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len); 186 static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, 187 int width); 188 static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp); 189 static int mmc_set_timing(struct mmc_softc *sc, int timing); 190 static int mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, 191 uint8_t value); 192 static int mmc_test_bus_width(struct mmc_softc *sc); 193 static int mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca, 194 struct mmc_command *cmd, int retries); 195 static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, 196 int retries); 197 static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 198 uint32_t arg, uint32_t flags, uint32_t *resp, int retries); 199 static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req); 200 static void mmc_wakeup(struct mmc_request *req); 201 202 static void 203 mmc_ms_delay(int ms) 204 { 205 206 DELAY(1000 * ms); /* XXX BAD */ 207 } 208 209 static int 210 mmc_probe(device_t dev) 211 { 212 213 device_set_desc(dev, "MMC/SD bus"); 214 return (0); 215 } 216 217 static int 218 mmc_attach(device_t dev) 219 { 220 struct mmc_softc *sc; 221 222 sc = device_get_softc(dev); 223 sc->dev = dev; 224 MMC_LOCK_INIT(sc); 225 226 /* We'll probe and attach our children later, but before / mount */ 227 sc->config_intrhook.ich_func = mmc_delayed_attach; 228 sc->config_intrhook.ich_arg = sc; 229 if (config_intrhook_establish(&sc->config_intrhook) != 0) 230 device_printf(dev, "config_intrhook_establish failed\n"); 231 return (0); 232 } 233 234 static int 235 mmc_detach(device_t dev) 236 { 237 struct mmc_softc *sc = device_get_softc(dev); 238 int err; 239 240 if ((err = mmc_delete_cards(sc)) != 0) 241 return (err); 242 mmc_power_down(sc); 243 MMC_LOCK_DESTROY(sc); 244 245 return (0); 246 } 247 248 static int 249 mmc_suspend(device_t dev) 250 { 251 struct mmc_softc *sc = device_get_softc(dev); 252 int err; 253 254 err = bus_generic_suspend(dev); 255 if (err) 256 return (err); 257 mmc_power_down(sc); 258 return (0); 259 } 260 261 static int 262 mmc_resume(device_t dev) 263 { 264 struct mmc_softc *sc = device_get_softc(dev); 265 266 mmc_scan(sc); 267 return (bus_generic_resume(dev)); 268 } 269 270 static int 271 mmc_acquire_bus(device_t busdev, device_t dev) 272 { 273 struct mmc_softc *sc; 274 struct mmc_ivars *ivar; 275 int err; 276 int rca; 277 278 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev); 279 if (err) 280 return (err); 281 sc = device_get_softc(busdev); 282 MMC_LOCK(sc); 283 if (sc->owner) 284 panic("mmc: host bridge didn't serialize us."); 285 sc->owner = dev; 286 MMC_UNLOCK(sc); 287 288 if (busdev != dev) { 289 /* 290 * Keep track of the last rca that we've selected. If 291 * we're asked to do it again, don't. We never 292 * unselect unless the bus code itself wants the mmc 293 * bus, and constantly reselecting causes problems. 294 */ 295 rca = mmc_get_rca(dev); 296 if (sc->last_rca != rca) { 297 mmc_select_card(sc, rca); 298 sc->last_rca = rca; 299 /* Prepare bus width for the new card. */ 300 ivar = device_get_ivars(dev); 301 if (bootverbose || mmc_debug) { 302 device_printf(busdev, 303 "setting bus width to %d bits\n", 304 (ivar->bus_width == bus_width_4) ? 4 : 305 (ivar->bus_width == bus_width_8) ? 8 : 1); 306 } 307 mmc_set_card_bus_width(sc, rca, ivar->bus_width); 308 mmcbr_set_bus_width(busdev, ivar->bus_width); 309 mmcbr_update_ios(busdev); 310 } 311 } else { 312 /* 313 * If there's a card selected, stand down. 314 */ 315 if (sc->last_rca != 0) { 316 mmc_select_card(sc, 0); 317 sc->last_rca = 0; 318 } 319 } 320 321 return (0); 322 } 323 324 static int 325 mmc_release_bus(device_t busdev, device_t dev) 326 { 327 struct mmc_softc *sc; 328 int err; 329 330 sc = device_get_softc(busdev); 331 332 MMC_LOCK(sc); 333 if (!sc->owner) 334 panic("mmc: releasing unowned bus."); 335 if (sc->owner != dev) 336 panic("mmc: you don't own the bus. game over."); 337 MMC_UNLOCK(sc); 338 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev); 339 if (err) 340 return (err); 341 MMC_LOCK(sc); 342 sc->owner = NULL; 343 MMC_UNLOCK(sc); 344 return (0); 345 } 346 347 static uint32_t 348 mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr) 349 { 350 351 return (ocr & MMC_OCR_VOLTAGE); 352 } 353 354 static int 355 mmc_highest_voltage(uint32_t ocr) 356 { 357 int i; 358 359 for (i = MMC_OCR_MAX_VOLTAGE_SHIFT; 360 i >= MMC_OCR_MIN_VOLTAGE_SHIFT; i--) 361 if (ocr & (1 << i)) 362 return (i); 363 return (-1); 364 } 365 366 static void 367 mmc_wakeup(struct mmc_request *req) 368 { 369 struct mmc_softc *sc; 370 371 sc = (struct mmc_softc *)req->done_data; 372 MMC_LOCK(sc); 373 req->flags |= MMC_REQ_DONE; 374 MMC_UNLOCK(sc); 375 wakeup(req); 376 } 377 378 static int 379 mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req) 380 { 381 382 req->done = mmc_wakeup; 383 req->done_data = sc; 384 if (mmc_debug > 1) { 385 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x", 386 req->cmd->opcode, req->cmd->arg, req->cmd->flags); 387 if (req->cmd->data) { 388 printf(" data %d\n", (int)req->cmd->data->len); 389 } else 390 printf("\n"); 391 } 392 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req); 393 MMC_LOCK(sc); 394 while ((req->flags & MMC_REQ_DONE) == 0) 395 msleep(req, &sc->sc_mtx, 0, "mmcreq", 0); 396 MMC_UNLOCK(sc); 397 if (mmc_debug > 2 || (mmc_debug > 0 && req->cmd->error != MMC_ERR_NONE)) 398 device_printf(sc->dev, "CMD%d RESULT: %d\n", 399 req->cmd->opcode, req->cmd->error); 400 return (0); 401 } 402 403 static int 404 mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req) 405 { 406 struct mmc_softc *sc = device_get_softc(brdev); 407 408 return (mmc_wait_for_req(sc, req)); 409 } 410 411 static int 412 mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries) 413 { 414 struct mmc_request mreq; 415 int err; 416 417 do { 418 memset(&mreq, 0, sizeof(mreq)); 419 memset(cmd->resp, 0, sizeof(cmd->resp)); 420 cmd->retries = 0; /* Retries done here, not in hardware. */ 421 cmd->mrq = &mreq; 422 mreq.cmd = cmd; 423 if (mmc_wait_for_req(sc, &mreq) != 0) 424 err = MMC_ERR_FAILED; 425 else 426 err = cmd->error; 427 } while (err != MMC_ERR_NONE && retries-- > 0); 428 429 return (err); 430 } 431 432 static int 433 mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca, 434 struct mmc_command *cmd, int retries) 435 { 436 struct mmc_command appcmd; 437 int err; 438 439 do { 440 memset(&appcmd, 0, sizeof(appcmd)); 441 appcmd.opcode = MMC_APP_CMD; 442 appcmd.arg = rca << 16; 443 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 444 appcmd.data = NULL; 445 if (mmc_wait_for_cmd(sc, &appcmd, 0) != 0) 446 err = MMC_ERR_FAILED; 447 else 448 err = appcmd.error; 449 if (err == MMC_ERR_NONE) { 450 if (!(appcmd.resp[0] & R1_APP_CMD)) 451 err = MMC_ERR_FAILED; 452 else if (mmc_wait_for_cmd(sc, cmd, 0) != 0) 453 err = MMC_ERR_FAILED; 454 else 455 err = cmd->error; 456 } 457 } while (err != MMC_ERR_NONE && retries-- > 0); 458 459 return (err); 460 } 461 462 static int 463 mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 464 uint32_t arg, uint32_t flags, uint32_t *resp, int retries) 465 { 466 struct mmc_command cmd; 467 int err; 468 469 memset(&cmd, 0, sizeof(cmd)); 470 cmd.opcode = opcode; 471 cmd.arg = arg; 472 cmd.flags = flags; 473 cmd.data = NULL; 474 err = mmc_wait_for_cmd(sc, &cmd, retries); 475 if (err) 476 return (err); 477 if (resp) { 478 if (flags & MMC_RSP_136) 479 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t)); 480 else 481 *resp = cmd.resp[0]; 482 } 483 return (0); 484 } 485 486 static void 487 mmc_idle_cards(struct mmc_softc *sc) 488 { 489 device_t dev; 490 struct mmc_command cmd; 491 492 dev = sc->dev; 493 mmcbr_set_chip_select(dev, cs_high); 494 mmcbr_update_ios(dev); 495 mmc_ms_delay(1); 496 497 memset(&cmd, 0, sizeof(cmd)); 498 cmd.opcode = MMC_GO_IDLE_STATE; 499 cmd.arg = 0; 500 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC; 501 cmd.data = NULL; 502 mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 503 mmc_ms_delay(1); 504 505 mmcbr_set_chip_select(dev, cs_dontcare); 506 mmcbr_update_ios(dev); 507 mmc_ms_delay(1); 508 } 509 510 static int 511 mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 512 { 513 struct mmc_command cmd; 514 int err = MMC_ERR_NONE, i; 515 516 memset(&cmd, 0, sizeof(cmd)); 517 cmd.opcode = ACMD_SD_SEND_OP_COND; 518 cmd.arg = ocr; 519 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 520 cmd.data = NULL; 521 522 for (i = 0; i < 1000; i++) { 523 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES); 524 if (err != MMC_ERR_NONE) 525 break; 526 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 527 (ocr & MMC_OCR_VOLTAGE) == 0) 528 break; 529 err = MMC_ERR_TIMEOUT; 530 mmc_ms_delay(10); 531 } 532 if (rocr && err == MMC_ERR_NONE) 533 *rocr = cmd.resp[0]; 534 return (err); 535 } 536 537 static int 538 mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 539 { 540 struct mmc_command cmd; 541 int err = MMC_ERR_NONE, i; 542 543 memset(&cmd, 0, sizeof(cmd)); 544 cmd.opcode = MMC_SEND_OP_COND; 545 cmd.arg = ocr; 546 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 547 cmd.data = NULL; 548 549 for (i = 0; i < 1000; i++) { 550 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 551 if (err != MMC_ERR_NONE) 552 break; 553 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 554 (ocr & MMC_OCR_VOLTAGE) == 0) 555 break; 556 err = MMC_ERR_TIMEOUT; 557 mmc_ms_delay(10); 558 } 559 if (rocr && err == MMC_ERR_NONE) 560 *rocr = cmd.resp[0]; 561 return (err); 562 } 563 564 static int 565 mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs) 566 { 567 struct mmc_command cmd; 568 int err; 569 570 memset(&cmd, 0, sizeof(cmd)); 571 cmd.opcode = SD_SEND_IF_COND; 572 cmd.arg = (vhs << 8) + 0xAA; 573 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR; 574 cmd.data = NULL; 575 576 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 577 return (err); 578 } 579 580 static void 581 mmc_power_up(struct mmc_softc *sc) 582 { 583 device_t dev; 584 585 dev = sc->dev; 586 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev))); 587 mmcbr_set_bus_mode(dev, opendrain); 588 mmcbr_set_chip_select(dev, cs_dontcare); 589 mmcbr_set_bus_width(dev, bus_width_1); 590 mmcbr_set_power_mode(dev, power_up); 591 mmcbr_set_clock(dev, 0); 592 mmcbr_update_ios(dev); 593 mmc_ms_delay(1); 594 595 mmcbr_set_clock(dev, CARD_ID_FREQUENCY); 596 mmcbr_set_timing(dev, bus_timing_normal); 597 mmcbr_set_power_mode(dev, power_on); 598 mmcbr_update_ios(dev); 599 mmc_ms_delay(2); 600 } 601 602 static void 603 mmc_power_down(struct mmc_softc *sc) 604 { 605 device_t dev = sc->dev; 606 607 mmcbr_set_bus_mode(dev, opendrain); 608 mmcbr_set_chip_select(dev, cs_dontcare); 609 mmcbr_set_bus_width(dev, bus_width_1); 610 mmcbr_set_power_mode(dev, power_off); 611 mmcbr_set_clock(dev, 0); 612 mmcbr_set_timing(dev, bus_timing_normal); 613 mmcbr_update_ios(dev); 614 } 615 616 static int 617 mmc_select_card(struct mmc_softc *sc, uint16_t rca) 618 { 619 int flags; 620 621 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC; 622 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16, 623 flags, NULL, CMD_RETRIES)); 624 } 625 626 static int 627 mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value) 628 { 629 struct mmc_command cmd; 630 int err; 631 632 memset(&cmd, 0, sizeof(cmd)); 633 cmd.opcode = MMC_SWITCH_FUNC; 634 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) | 635 (index << 16) | 636 (value << 8) | 637 set; 638 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 639 cmd.data = NULL; 640 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 641 return (err); 642 } 643 644 static int 645 mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value, 646 uint8_t *res) 647 { 648 int err; 649 struct mmc_command cmd; 650 struct mmc_data data; 651 652 memset(&cmd, 0, sizeof(cmd)); 653 memset(&data, 0, sizeof(data)); 654 memset(res, 0, 64); 655 656 cmd.opcode = SD_SWITCH_FUNC; 657 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 658 cmd.arg = mode << 31; /* 0 - check, 1 - set */ 659 cmd.arg |= 0x00FFFFFF; 660 cmd.arg &= ~(0xF << (grp * 4)); 661 cmd.arg |= value << (grp * 4); 662 cmd.data = &data; 663 664 data.data = res; 665 data.len = 64; 666 data.flags = MMC_DATA_READ; 667 668 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 669 return (err); 670 } 671 672 static int 673 mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width) 674 { 675 struct mmc_command cmd; 676 int err; 677 uint8_t value; 678 679 if (mmcbr_get_mode(sc->dev) == mode_sd) { 680 memset(&cmd, 0, sizeof(cmd)); 681 cmd.opcode = ACMD_SET_CLR_CARD_DETECT; 682 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 683 cmd.arg = SD_CLR_CARD_DETECT; 684 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 685 if (err != 0) 686 return (err); 687 memset(&cmd, 0, sizeof(cmd)); 688 cmd.opcode = ACMD_SET_BUS_WIDTH; 689 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 690 switch (width) { 691 case bus_width_1: 692 cmd.arg = SD_BUS_WIDTH_1; 693 break; 694 case bus_width_4: 695 cmd.arg = SD_BUS_WIDTH_4; 696 break; 697 default: 698 return (MMC_ERR_INVALID); 699 } 700 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 701 } else { 702 switch (width) { 703 case bus_width_1: 704 value = EXT_CSD_BUS_WIDTH_1; 705 break; 706 case bus_width_4: 707 value = EXT_CSD_BUS_WIDTH_4; 708 break; 709 case bus_width_8: 710 value = EXT_CSD_BUS_WIDTH_8; 711 break; 712 default: 713 return (MMC_ERR_INVALID); 714 } 715 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 716 value); 717 } 718 return (err); 719 } 720 721 static int 722 mmc_set_timing(struct mmc_softc *sc, int timing) 723 { 724 int err; 725 uint8_t value; 726 u_char switch_res[64]; 727 728 switch (timing) { 729 case bus_timing_normal: 730 value = 0; 731 break; 732 case bus_timing_hs: 733 value = 1; 734 break; 735 default: 736 return (MMC_ERR_INVALID); 737 } 738 if (mmcbr_get_mode(sc->dev) == mode_sd) 739 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, 740 value, switch_res); 741 else 742 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, 743 EXT_CSD_HS_TIMING, value); 744 return (err); 745 } 746 747 static int 748 mmc_test_bus_width(struct mmc_softc *sc) 749 { 750 struct mmc_command cmd; 751 struct mmc_data data; 752 int err; 753 uint8_t buf[8]; 754 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 755 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 756 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, }; 757 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, }; 758 759 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) { 760 mmcbr_set_bus_width(sc->dev, bus_width_8); 761 mmcbr_update_ios(sc->dev); 762 763 memset(&cmd, 0, sizeof(cmd)); 764 memset(&data, 0, sizeof(data)); 765 cmd.opcode = MMC_BUSTEST_W; 766 cmd.arg = 0; 767 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 768 cmd.data = &data; 769 770 data.data = p8; 771 data.len = 8; 772 data.flags = MMC_DATA_WRITE; 773 mmc_wait_for_cmd(sc, &cmd, 0); 774 775 memset(&cmd, 0, sizeof(cmd)); 776 memset(&data, 0, sizeof(data)); 777 cmd.opcode = MMC_BUSTEST_R; 778 cmd.arg = 0; 779 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 780 cmd.data = &data; 781 782 data.data = buf; 783 data.len = 8; 784 data.flags = MMC_DATA_READ; 785 err = mmc_wait_for_cmd(sc, &cmd, 0); 786 787 mmcbr_set_bus_width(sc->dev, bus_width_1); 788 mmcbr_update_ios(sc->dev); 789 790 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0) 791 return (bus_width_8); 792 } 793 794 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) { 795 mmcbr_set_bus_width(sc->dev, bus_width_4); 796 mmcbr_update_ios(sc->dev); 797 798 memset(&cmd, 0, sizeof(cmd)); 799 memset(&data, 0, sizeof(data)); 800 cmd.opcode = MMC_BUSTEST_W; 801 cmd.arg = 0; 802 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 803 cmd.data = &data; 804 805 data.data = p4; 806 data.len = 4; 807 data.flags = MMC_DATA_WRITE; 808 mmc_wait_for_cmd(sc, &cmd, 0); 809 810 memset(&cmd, 0, sizeof(cmd)); 811 memset(&data, 0, sizeof(data)); 812 cmd.opcode = MMC_BUSTEST_R; 813 cmd.arg = 0; 814 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 815 cmd.data = &data; 816 817 data.data = buf; 818 data.len = 4; 819 data.flags = MMC_DATA_READ; 820 err = mmc_wait_for_cmd(sc, &cmd, 0); 821 822 mmcbr_set_bus_width(sc->dev, bus_width_1); 823 mmcbr_update_ios(sc->dev); 824 825 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0) 826 return (bus_width_4); 827 } 828 return (bus_width_1); 829 } 830 831 static uint32_t 832 mmc_get_bits(uint32_t *bits, int bit_len, int start, int size) 833 { 834 const int i = (bit_len / 32) - (start / 32) - 1; 835 const int shift = start & 31; 836 uint32_t retval = bits[i] >> shift; 837 if (size + shift > 32) 838 retval |= bits[i - 1] << (32 - shift); 839 return (retval & ((1llu << size) - 1)); 840 } 841 842 static void 843 mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid) 844 { 845 int i; 846 847 /* There's no version info, so we take it on faith */ 848 memset(cid, 0, sizeof(*cid)); 849 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 850 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16); 851 for (i = 0; i < 5; i++) 852 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 853 cid->pnm[5] = 0; 854 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8); 855 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32); 856 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000; 857 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4); 858 } 859 860 static void 861 mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid) 862 { 863 int i; 864 865 /* There's no version info, so we take it on faith */ 866 memset(cid, 0, sizeof(*cid)); 867 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 868 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8); 869 for (i = 0; i < 6; i++) 870 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 871 cid->pnm[6] = 0; 872 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8); 873 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32); 874 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4); 875 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997; 876 } 877 878 static void 879 mmc_format_card_id_string(struct mmc_ivars *ivar) 880 { 881 char oidstr[8]; 882 uint8_t c1; 883 uint8_t c2; 884 885 /* 886 * Format a card ID string for use by the mmcsd driver, it's what 887 * appears between the <> in the following: 888 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0 889 * 22.5MHz/4bit/128-block 890 * 891 * Also format just the card serial number, which the mmcsd driver will 892 * use as the disk->d_ident string. 893 * 894 * The card_id_string in mmc_ivars is currently allocated as 64 bytes, 895 * and our max formatted length is currently 55 bytes if every field 896 * contains the largest value. 897 * 898 * Sometimes the oid is two printable ascii chars; when it's not, 899 * format it as 0xnnnn instead. 900 */ 901 c1 = (ivar->cid.oid >> 8) & 0x0ff; 902 c2 = ivar->cid.oid & 0x0ff; 903 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f) 904 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2); 905 else 906 snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid); 907 snprintf(ivar->card_sn_string, sizeof(ivar->card_sn_string), 908 "%08X", ivar->cid.psn); 909 snprintf(ivar->card_id_string, sizeof(ivar->card_id_string), 910 "%s%s %s %d.%d SN %08X MFG %02d/%04d by %d %s", 911 ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "", 912 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f, 913 ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year, 914 ivar->cid.mid, oidstr); 915 } 916 917 static const int exp[8] = { 918 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 919 }; 920 921 static const int mant[16] = { 922 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 923 }; 924 925 static const int cur_min[8] = { 926 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000 927 }; 928 929 static const int cur_max[8] = { 930 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000 931 }; 932 933 static void 934 mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd) 935 { 936 int v; 937 int m; 938 int e; 939 940 memset(csd, 0, sizeof(*csd)); 941 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2); 942 if (v == 0) { 943 m = mmc_get_bits(raw_csd, 128, 115, 4); 944 e = mmc_get_bits(raw_csd, 128, 112, 3); 945 csd->tacc = (exp[e] * mant[m] + 9) / 10; 946 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 947 m = mmc_get_bits(raw_csd, 128, 99, 4); 948 e = mmc_get_bits(raw_csd, 128, 96, 3); 949 csd->tran_speed = exp[e] * 10000 * mant[m]; 950 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 951 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 952 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 953 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 954 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 955 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 956 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 957 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 958 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 959 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 960 m = mmc_get_bits(raw_csd, 128, 62, 12); 961 e = mmc_get_bits(raw_csd, 128, 47, 3); 962 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 963 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 964 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 965 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 966 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 967 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 968 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 969 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 970 } else if (v == 1) { 971 m = mmc_get_bits(raw_csd, 128, 115, 4); 972 e = mmc_get_bits(raw_csd, 128, 112, 3); 973 csd->tacc = (exp[e] * mant[m] + 9) / 10; 974 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 975 m = mmc_get_bits(raw_csd, 128, 99, 4); 976 e = mmc_get_bits(raw_csd, 128, 96, 3); 977 csd->tran_speed = exp[e] * 10000 * mant[m]; 978 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 979 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 980 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 981 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 982 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 983 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 984 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) * 985 512 * 1024; 986 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 987 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 988 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 989 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 990 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 991 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 992 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 993 } else 994 panic("unknown SD CSD version"); 995 } 996 997 static void 998 mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd) 999 { 1000 int m; 1001 int e; 1002 1003 memset(csd, 0, sizeof(*csd)); 1004 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2); 1005 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4); 1006 m = mmc_get_bits(raw_csd, 128, 115, 4); 1007 e = mmc_get_bits(raw_csd, 128, 112, 3); 1008 csd->tacc = exp[e] * mant[m] + 9 / 10; 1009 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 1010 m = mmc_get_bits(raw_csd, 128, 99, 4); 1011 e = mmc_get_bits(raw_csd, 128, 96, 3); 1012 csd->tran_speed = exp[e] * 10000 * mant[m]; 1013 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 1014 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 1015 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 1016 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 1017 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 1018 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 1019 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 1020 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 1021 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 1022 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 1023 m = mmc_get_bits(raw_csd, 128, 62, 12); 1024 e = mmc_get_bits(raw_csd, 128, 47, 3); 1025 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 1026 csd->erase_blk_en = 0; 1027 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) * 1028 (mmc_get_bits(raw_csd, 128, 37, 5) + 1); 1029 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5); 1030 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 1031 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 1032 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 1033 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 1034 } 1035 1036 static void 1037 mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr) 1038 { 1039 unsigned int scr_struct; 1040 1041 memset(scr, 0, sizeof(*scr)); 1042 1043 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4); 1044 if (scr_struct != 0) { 1045 printf("Unrecognised SCR structure version %d\n", 1046 scr_struct); 1047 return; 1048 } 1049 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4); 1050 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4); 1051 } 1052 1053 static void 1054 mmc_app_decode_sd_status(uint32_t *raw_sd_status, 1055 struct mmc_sd_status *sd_status) 1056 { 1057 1058 memset(sd_status, 0, sizeof(*sd_status)); 1059 1060 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2); 1061 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1); 1062 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16); 1063 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12); 1064 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8); 1065 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8); 1066 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4); 1067 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16); 1068 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6); 1069 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2); 1070 } 1071 1072 static int 1073 mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid) 1074 { 1075 struct mmc_command cmd; 1076 int err; 1077 1078 memset(&cmd, 0, sizeof(cmd)); 1079 cmd.opcode = MMC_ALL_SEND_CID; 1080 cmd.arg = 0; 1081 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 1082 cmd.data = NULL; 1083 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1084 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t)); 1085 return (err); 1086 } 1087 1088 static int 1089 mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd) 1090 { 1091 struct mmc_command cmd; 1092 int err; 1093 1094 memset(&cmd, 0, sizeof(cmd)); 1095 cmd.opcode = MMC_SEND_CSD; 1096 cmd.arg = rca << 16; 1097 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 1098 cmd.data = NULL; 1099 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1100 memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t)); 1101 return (err); 1102 } 1103 1104 static int 1105 mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr) 1106 { 1107 int err; 1108 struct mmc_command cmd; 1109 struct mmc_data data; 1110 1111 memset(&cmd, 0, sizeof(cmd)); 1112 memset(&data, 0, sizeof(data)); 1113 1114 memset(rawscr, 0, 8); 1115 cmd.opcode = ACMD_SEND_SCR; 1116 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1117 cmd.arg = 0; 1118 cmd.data = &data; 1119 1120 data.data = rawscr; 1121 data.len = 8; 1122 data.flags = MMC_DATA_READ; 1123 1124 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 1125 rawscr[0] = be32toh(rawscr[0]); 1126 rawscr[1] = be32toh(rawscr[1]); 1127 return (err); 1128 } 1129 1130 static int 1131 mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd) 1132 { 1133 int err; 1134 struct mmc_command cmd; 1135 struct mmc_data data; 1136 1137 memset(&cmd, 0, sizeof(cmd)); 1138 memset(&data, 0, sizeof(data)); 1139 1140 memset(rawextcsd, 0, 512); 1141 cmd.opcode = MMC_SEND_EXT_CSD; 1142 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1143 cmd.arg = 0; 1144 cmd.data = &data; 1145 1146 data.data = rawextcsd; 1147 data.len = 512; 1148 data.flags = MMC_DATA_READ; 1149 1150 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1151 return (err); 1152 } 1153 1154 static int 1155 mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus) 1156 { 1157 int err, i; 1158 struct mmc_command cmd; 1159 struct mmc_data data; 1160 1161 memset(&cmd, 0, sizeof(cmd)); 1162 memset(&data, 0, sizeof(data)); 1163 1164 memset(rawsdstatus, 0, 64); 1165 cmd.opcode = ACMD_SD_STATUS; 1166 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1167 cmd.arg = 0; 1168 cmd.data = &data; 1169 1170 data.data = rawsdstatus; 1171 data.len = 64; 1172 data.flags = MMC_DATA_READ; 1173 1174 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 1175 for (i = 0; i < 16; i++) 1176 rawsdstatus[i] = be32toh(rawsdstatus[i]); 1177 return (err); 1178 } 1179 1180 static int 1181 mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp) 1182 { 1183 struct mmc_command cmd; 1184 int err; 1185 1186 memset(&cmd, 0, sizeof(cmd)); 1187 cmd.opcode = MMC_SET_RELATIVE_ADDR; 1188 cmd.arg = resp << 16; 1189 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1190 cmd.data = NULL; 1191 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1192 return (err); 1193 } 1194 1195 static int 1196 mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp) 1197 { 1198 struct mmc_command cmd; 1199 int err; 1200 1201 memset(&cmd, 0, sizeof(cmd)); 1202 cmd.opcode = SD_SEND_RELATIVE_ADDR; 1203 cmd.arg = 0; 1204 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1205 cmd.data = NULL; 1206 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1207 *resp = cmd.resp[0]; 1208 return (err); 1209 } 1210 1211 static int 1212 mmc_send_status(struct mmc_softc *sc, uint16_t rca, uint32_t *status) 1213 { 1214 struct mmc_command cmd; 1215 int err; 1216 1217 memset(&cmd, 0, sizeof(cmd)); 1218 cmd.opcode = MMC_SEND_STATUS; 1219 cmd.arg = rca << 16; 1220 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1221 cmd.data = NULL; 1222 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1223 *status = cmd.resp[0]; 1224 return (err); 1225 } 1226 1227 static int 1228 mmc_set_blocklen(struct mmc_softc *sc, uint32_t len) 1229 { 1230 struct mmc_command cmd; 1231 int err; 1232 1233 memset(&cmd, 0, sizeof(cmd)); 1234 cmd.opcode = MMC_SET_BLOCKLEN; 1235 cmd.arg = len; 1236 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1237 cmd.data = NULL; 1238 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1239 return (err); 1240 } 1241 1242 static void 1243 mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard) 1244 { 1245 device_printf(dev, "Card at relative address 0x%04x%s:\n", 1246 ivar->rca, newcard ? " added" : ""); 1247 device_printf(dev, " card: %s\n", ivar->card_id_string); 1248 device_printf(dev, " bus: %ubit, %uMHz%s\n", 1249 (ivar->bus_width == bus_width_1 ? 1 : 1250 (ivar->bus_width == bus_width_4 ? 4 : 8)), 1251 (ivar->timing == bus_timing_hs ? 1252 ivar->hs_tran_speed : ivar->tran_speed) / 1000000, 1253 ivar->timing == bus_timing_hs ? ", high speed timing" : ""); 1254 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n", 1255 ivar->sec_count, ivar->erase_sector, 1256 ivar->read_only ? ", read-only" : ""); 1257 } 1258 1259 static void 1260 mmc_discover_cards(struct mmc_softc *sc) 1261 { 1262 struct mmc_ivars *ivar = NULL; 1263 device_t *devlist; 1264 int err, i, devcount, newcard; 1265 uint32_t raw_cid[4], resp, sec_count, status; 1266 device_t child; 1267 uint16_t rca = 2; 1268 u_char switch_res[64]; 1269 1270 if (bootverbose || mmc_debug) 1271 device_printf(sc->dev, "Probing cards\n"); 1272 while (1) { 1273 err = mmc_all_send_cid(sc, raw_cid); 1274 if (err == MMC_ERR_TIMEOUT) 1275 break; 1276 if (err != MMC_ERR_NONE) { 1277 device_printf(sc->dev, "Error reading CID %d\n", err); 1278 break; 1279 } 1280 newcard = 1; 1281 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1282 return; 1283 for (i = 0; i < devcount; i++) { 1284 ivar = device_get_ivars(devlist[i]); 1285 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) { 1286 newcard = 0; 1287 break; 1288 } 1289 } 1290 free(devlist, M_TEMP); 1291 if (bootverbose || mmc_debug) { 1292 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n", 1293 newcard ? "New c" : "C", 1294 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]); 1295 } 1296 if (newcard) { 1297 ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF, 1298 M_WAITOK | M_ZERO); 1299 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid)); 1300 } 1301 if (mmcbr_get_ro(sc->dev)) 1302 ivar->read_only = 1; 1303 ivar->bus_width = bus_width_1; 1304 ivar->timing = bus_timing_normal; 1305 ivar->mode = mmcbr_get_mode(sc->dev); 1306 if (ivar->mode == mode_sd) { 1307 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid); 1308 mmc_send_relative_addr(sc, &resp); 1309 ivar->rca = resp >> 16; 1310 /* Get card CSD. */ 1311 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1312 if (bootverbose || mmc_debug) 1313 device_printf(sc->dev, 1314 "%sard detected (CSD %08x%08x%08x%08x)\n", 1315 newcard ? "New c" : "C", ivar->raw_csd[0], 1316 ivar->raw_csd[1], ivar->raw_csd[2], 1317 ivar->raw_csd[3]); 1318 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd); 1319 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1320 if (ivar->csd.csd_structure > 0) 1321 ivar->high_cap = 1; 1322 ivar->tran_speed = ivar->csd.tran_speed; 1323 ivar->erase_sector = ivar->csd.erase_sector * 1324 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1325 1326 err = mmc_send_status(sc, ivar->rca, &status); 1327 if (err != MMC_ERR_NONE) { 1328 device_printf(sc->dev, 1329 "Error reading card status %d\n", err); 1330 break; 1331 } 1332 if ((status & R1_CARD_IS_LOCKED) != 0) { 1333 device_printf(sc->dev, 1334 "Card is password protected, skipping.\n"); 1335 break; 1336 } 1337 1338 /* Get card SCR. Card must be selected to fetch it. */ 1339 mmc_select_card(sc, ivar->rca); 1340 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr); 1341 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr); 1342 /* Get card switch capabilities (command class 10). */ 1343 if ((ivar->scr.sda_vsn >= 1) && 1344 (ivar->csd.ccc & (1<<10))) { 1345 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK, 1346 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, 1347 switch_res); 1348 if (switch_res[13] & 2) { 1349 ivar->timing = bus_timing_hs; 1350 ivar->hs_tran_speed = SD_MAX_HS; 1351 } 1352 } 1353 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status); 1354 mmc_app_decode_sd_status(ivar->raw_sd_status, 1355 &ivar->sd_status); 1356 if (ivar->sd_status.au_size != 0) { 1357 ivar->erase_sector = 1358 16 << ivar->sd_status.au_size; 1359 } 1360 mmc_select_card(sc, 0); 1361 /* Find max supported bus width. */ 1362 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) && 1363 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) 1364 ivar->bus_width = bus_width_4; 1365 1366 /* 1367 * Some cards that report maximum I/O block sizes 1368 * greater than 512 require the block length to be 1369 * set to 512, even though that is supposed to be 1370 * the default. Example: 1371 * 1372 * Transcend 2GB SDSC card, CID: 1373 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000 1374 */ 1375 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE || 1376 ivar->csd.write_bl_len != MMC_SECTOR_SIZE) 1377 mmc_set_blocklen(sc, MMC_SECTOR_SIZE); 1378 1379 mmc_format_card_id_string(ivar); 1380 1381 if (bootverbose || mmc_debug) 1382 mmc_log_card(sc->dev, ivar, newcard); 1383 if (newcard) { 1384 /* Add device. */ 1385 child = device_add_child(sc->dev, NULL, -1); 1386 device_set_ivars(child, ivar); 1387 } 1388 return; 1389 } 1390 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid); 1391 ivar->rca = rca++; 1392 mmc_set_relative_addr(sc, ivar->rca); 1393 /* Get card CSD. */ 1394 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1395 if (bootverbose || mmc_debug) 1396 device_printf(sc->dev, 1397 "%sard detected (CSD %08x%08x%08x%08x)\n", 1398 newcard ? "New c" : "C", ivar->raw_csd[0], 1399 ivar->raw_csd[1], ivar->raw_csd[2], 1400 ivar->raw_csd[3]); 1401 1402 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd); 1403 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1404 ivar->tran_speed = ivar->csd.tran_speed; 1405 ivar->erase_sector = ivar->csd.erase_sector * 1406 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1407 1408 err = mmc_send_status(sc, ivar->rca, &status); 1409 if (err != MMC_ERR_NONE) { 1410 device_printf(sc->dev, 1411 "Error reading card status %d\n", err); 1412 break; 1413 } 1414 if ((status & R1_CARD_IS_LOCKED) != 0) { 1415 device_printf(sc->dev, 1416 "Card is password protected, skipping.\n"); 1417 break; 1418 } 1419 1420 /* Only MMC >= 4.x cards support EXT_CSD. */ 1421 if (ivar->csd.spec_vers >= 4) { 1422 /* Card must be selected to fetch EXT_CSD. */ 1423 mmc_select_card(sc, ivar->rca); 1424 mmc_send_ext_csd(sc, ivar->raw_ext_csd); 1425 /* Handle extended capacity from EXT_CSD */ 1426 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] + 1427 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) + 1428 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) + 1429 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24); 1430 if (sec_count != 0) { 1431 ivar->sec_count = sec_count; 1432 ivar->high_cap = 1; 1433 } 1434 /* Get card speed in high speed mode. */ 1435 ivar->timing = bus_timing_hs; 1436 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1437 & EXT_CSD_CARD_TYPE_52) 1438 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS; 1439 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1440 & EXT_CSD_CARD_TYPE_26) 1441 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS; 1442 else 1443 ivar->hs_tran_speed = ivar->tran_speed; 1444 /* Find max supported bus width. */ 1445 ivar->bus_width = mmc_test_bus_width(sc); 1446 mmc_select_card(sc, 0); 1447 /* Handle HC erase sector size. */ 1448 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) { 1449 ivar->erase_sector = 1024 * 1450 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE]; 1451 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, 1452 EXT_CSD_ERASE_GRP_DEF, 1); 1453 } 1454 } else { 1455 ivar->bus_width = bus_width_1; 1456 ivar->timing = bus_timing_normal; 1457 } 1458 1459 /* 1460 * Some cards that report maximum I/O block sizes greater 1461 * than 512 require the block length to be set to 512, even 1462 * though that is supposed to be the default. Example: 1463 * 1464 * Transcend 2GB SDSC card, CID: 1465 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000 1466 */ 1467 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE || 1468 ivar->csd.write_bl_len != MMC_SECTOR_SIZE) 1469 mmc_set_blocklen(sc, MMC_SECTOR_SIZE); 1470 1471 mmc_format_card_id_string(ivar); 1472 1473 if (bootverbose || mmc_debug) 1474 mmc_log_card(sc->dev, ivar, newcard); 1475 if (newcard) { 1476 /* Add device. */ 1477 child = device_add_child(sc->dev, NULL, -1); 1478 device_set_ivars(child, ivar); 1479 } 1480 } 1481 } 1482 1483 static void 1484 mmc_rescan_cards(struct mmc_softc *sc) 1485 { 1486 struct mmc_ivars *ivar = NULL; 1487 device_t *devlist; 1488 int err, i, devcount; 1489 1490 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1491 return; 1492 for (i = 0; i < devcount; i++) { 1493 ivar = device_get_ivars(devlist[i]); 1494 if (mmc_select_card(sc, ivar->rca)) { 1495 if (bootverbose || mmc_debug) 1496 device_printf(sc->dev, "Card at relative address %d lost.\n", 1497 ivar->rca); 1498 device_delete_child(sc->dev, devlist[i]); 1499 free(ivar, M_DEVBUF); 1500 } 1501 } 1502 free(devlist, M_TEMP); 1503 mmc_select_card(sc, 0); 1504 } 1505 1506 static int 1507 mmc_delete_cards(struct mmc_softc *sc) 1508 { 1509 struct mmc_ivars *ivar; 1510 device_t *devlist; 1511 int err, i, devcount; 1512 1513 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1514 return (err); 1515 for (i = 0; i < devcount; i++) { 1516 ivar = device_get_ivars(devlist[i]); 1517 if (bootverbose || mmc_debug) 1518 device_printf(sc->dev, "Card at relative address %d deleted.\n", 1519 ivar->rca); 1520 device_delete_child(sc->dev, devlist[i]); 1521 free(ivar, M_DEVBUF); 1522 } 1523 free(devlist, M_TEMP); 1524 return (0); 1525 } 1526 1527 static void 1528 mmc_go_discovery(struct mmc_softc *sc) 1529 { 1530 uint32_t ocr; 1531 device_t dev; 1532 int err; 1533 1534 dev = sc->dev; 1535 if (mmcbr_get_power_mode(dev) != power_on) { 1536 /* 1537 * First, try SD modes 1538 */ 1539 mmcbr_set_mode(dev, mode_sd); 1540 mmc_power_up(sc); 1541 mmcbr_set_bus_mode(dev, pushpull); 1542 if (bootverbose || mmc_debug) 1543 device_printf(sc->dev, "Probing bus\n"); 1544 mmc_idle_cards(sc); 1545 err = mmc_send_if_cond(sc, 1); 1546 if ((bootverbose || mmc_debug) && err == 0) 1547 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n"); 1548 if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) { 1549 if (bootverbose || mmc_debug) 1550 device_printf(sc->dev, "SD probe: failed\n"); 1551 /* 1552 * Failed, try MMC 1553 */ 1554 mmcbr_set_mode(dev, mode_mmc); 1555 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) { 1556 if (bootverbose || mmc_debug) 1557 device_printf(sc->dev, "MMC probe: failed\n"); 1558 ocr = 0; /* Failed both, powerdown. */ 1559 } else if (bootverbose || mmc_debug) 1560 device_printf(sc->dev, 1561 "MMC probe: OK (OCR: 0x%08x)\n", ocr); 1562 } else if (bootverbose || mmc_debug) 1563 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr); 1564 1565 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr)); 1566 if (mmcbr_get_ocr(dev) != 0) 1567 mmc_idle_cards(sc); 1568 } else { 1569 mmcbr_set_bus_mode(dev, opendrain); 1570 mmcbr_set_clock(dev, CARD_ID_FREQUENCY); 1571 mmcbr_update_ios(dev); 1572 /* XXX recompute vdd based on new cards? */ 1573 } 1574 /* 1575 * Make sure that we have a mutually agreeable voltage to at least 1576 * one card on the bus. 1577 */ 1578 if (bootverbose || mmc_debug) 1579 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev)); 1580 if (mmcbr_get_ocr(dev) == 0) { 1581 device_printf(sc->dev, "No compatible cards found on bus\n"); 1582 mmc_delete_cards(sc); 1583 mmc_power_down(sc); 1584 return; 1585 } 1586 /* 1587 * Reselect the cards after we've idled them above. 1588 */ 1589 if (mmcbr_get_mode(dev) == mode_sd) { 1590 err = mmc_send_if_cond(sc, 1); 1591 mmc_send_app_op_cond(sc, 1592 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL); 1593 } else 1594 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL); 1595 mmc_discover_cards(sc); 1596 mmc_rescan_cards(sc); 1597 1598 mmcbr_set_bus_mode(dev, pushpull); 1599 mmcbr_update_ios(dev); 1600 mmc_calculate_clock(sc); 1601 bus_generic_attach(dev); 1602 /* mmc_update_children_sysctl(dev);*/ 1603 } 1604 1605 static int 1606 mmc_calculate_clock(struct mmc_softc *sc) 1607 { 1608 int max_dtr, max_hs_dtr, max_timing; 1609 int nkid, i, f_max; 1610 device_t *kids; 1611 struct mmc_ivars *ivar; 1612 1613 f_max = mmcbr_get_f_max(sc->dev); 1614 max_dtr = max_hs_dtr = f_max; 1615 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED)) 1616 max_timing = bus_timing_hs; 1617 else 1618 max_timing = bus_timing_normal; 1619 if (device_get_children(sc->dev, &kids, &nkid) != 0) 1620 panic("can't get children"); 1621 for (i = 0; i < nkid; i++) { 1622 ivar = device_get_ivars(kids[i]); 1623 if (ivar->timing < max_timing) 1624 max_timing = ivar->timing; 1625 if (ivar->tran_speed < max_dtr) 1626 max_dtr = ivar->tran_speed; 1627 if (ivar->hs_tran_speed < max_hs_dtr) 1628 max_hs_dtr = ivar->hs_tran_speed; 1629 } 1630 for (i = 0; i < nkid; i++) { 1631 ivar = device_get_ivars(kids[i]); 1632 if (ivar->timing == bus_timing_normal) 1633 continue; 1634 mmc_select_card(sc, ivar->rca); 1635 mmc_set_timing(sc, max_timing); 1636 } 1637 mmc_select_card(sc, 0); 1638 free(kids, M_TEMP); 1639 if (max_timing == bus_timing_hs) 1640 max_dtr = max_hs_dtr; 1641 if (bootverbose || mmc_debug) { 1642 device_printf(sc->dev, 1643 "setting transfer rate to %d.%03dMHz%s\n", 1644 max_dtr / 1000000, (max_dtr / 1000) % 1000, 1645 max_timing == bus_timing_hs ? " (high speed timing)" : ""); 1646 } 1647 mmcbr_set_timing(sc->dev, max_timing); 1648 mmcbr_set_clock(sc->dev, max_dtr); 1649 mmcbr_update_ios(sc->dev); 1650 return max_dtr; 1651 } 1652 1653 static void 1654 mmc_scan(struct mmc_softc *sc) 1655 { 1656 device_t dev = sc->dev; 1657 1658 mmc_acquire_bus(dev, dev); 1659 mmc_go_discovery(sc); 1660 mmc_release_bus(dev, dev); 1661 } 1662 1663 static int 1664 mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result) 1665 { 1666 struct mmc_ivars *ivar = device_get_ivars(child); 1667 1668 switch (which) { 1669 default: 1670 return (EINVAL); 1671 case MMC_IVAR_DSR_IMP: 1672 *result = ivar->csd.dsr_imp; 1673 break; 1674 case MMC_IVAR_MEDIA_SIZE: 1675 *result = ivar->sec_count; 1676 break; 1677 case MMC_IVAR_RCA: 1678 *result = ivar->rca; 1679 break; 1680 case MMC_IVAR_SECTOR_SIZE: 1681 *result = MMC_SECTOR_SIZE; 1682 break; 1683 case MMC_IVAR_TRAN_SPEED: 1684 *result = mmcbr_get_clock(bus); 1685 break; 1686 case MMC_IVAR_READ_ONLY: 1687 *result = ivar->read_only; 1688 break; 1689 case MMC_IVAR_HIGH_CAP: 1690 *result = ivar->high_cap; 1691 break; 1692 case MMC_IVAR_CARD_TYPE: 1693 *result = ivar->mode; 1694 break; 1695 case MMC_IVAR_BUS_WIDTH: 1696 *result = ivar->bus_width; 1697 break; 1698 case MMC_IVAR_ERASE_SECTOR: 1699 *result = ivar->erase_sector; 1700 break; 1701 case MMC_IVAR_MAX_DATA: 1702 *result = mmcbr_get_max_data(bus); 1703 break; 1704 case MMC_IVAR_CARD_ID_STRING: 1705 *(char **)result = ivar->card_id_string; 1706 break; 1707 case MMC_IVAR_CARD_SN_STRING: 1708 *(char **)result = ivar->card_sn_string; 1709 break; 1710 } 1711 return (0); 1712 } 1713 1714 static int 1715 mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value) 1716 { 1717 /* 1718 * None are writable ATM 1719 */ 1720 return (EINVAL); 1721 } 1722 1723 static void 1724 mmc_delayed_attach(void *xsc) 1725 { 1726 struct mmc_softc *sc = xsc; 1727 1728 mmc_scan(sc); 1729 config_intrhook_disestablish(&sc->config_intrhook); 1730 } 1731 1732 static int 1733 mmc_child_location_str(device_t dev, device_t child, char *buf, 1734 size_t buflen) 1735 { 1736 1737 snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child)); 1738 return (0); 1739 } 1740 1741 static device_method_t mmc_methods[] = { 1742 /* device_if */ 1743 DEVMETHOD(device_probe, mmc_probe), 1744 DEVMETHOD(device_attach, mmc_attach), 1745 DEVMETHOD(device_detach, mmc_detach), 1746 DEVMETHOD(device_suspend, mmc_suspend), 1747 DEVMETHOD(device_resume, mmc_resume), 1748 1749 /* Bus interface */ 1750 DEVMETHOD(bus_read_ivar, mmc_read_ivar), 1751 DEVMETHOD(bus_write_ivar, mmc_write_ivar), 1752 DEVMETHOD(bus_child_location_str, mmc_child_location_str), 1753 1754 /* MMC Bus interface */ 1755 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request), 1756 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus), 1757 DEVMETHOD(mmcbus_release_bus, mmc_release_bus), 1758 1759 DEVMETHOD_END 1760 }; 1761 1762 static driver_t mmc_driver = { 1763 "mmc", 1764 mmc_methods, 1765 sizeof(struct mmc_softc), 1766 }; 1767 static devclass_t mmc_devclass; 1768 1769 DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL); 1770 DRIVER_MODULE(mmc, sdhci_bcm, mmc_driver, mmc_devclass, NULL, NULL); 1771 DRIVER_MODULE(mmc, sdhci_fdt, mmc_driver, mmc_devclass, NULL, NULL); 1772 DRIVER_MODULE(mmc, sdhci_imx, mmc_driver, mmc_devclass, NULL, NULL); 1773 DRIVER_MODULE(mmc, sdhci_pci, mmc_driver, mmc_devclass, NULL, NULL); 1774 DRIVER_MODULE(mmc, sdhci_ti, mmc_driver, mmc_devclass, NULL, NULL); 1775 DRIVER_MODULE(mmc, ti_mmchs, mmc_driver, mmc_devclass, NULL, NULL); 1776 DRIVER_MODULE(mmc, dwmmc, mmc_driver, mmc_devclass, NULL, NULL); 1777 1778