mmc.c revision 318198
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: stable/10/sys/dev/mmc/mmc.c 318198 2017-05-11 21:01:02Z marius $"); 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#include <sys/time.h> 67 68#include <dev/mmc/bridge.h> 69#include <dev/mmc/mmc_private.h> 70#include <dev/mmc/mmc_subr.h> 71#include <dev/mmc/mmcreg.h> 72#include <dev/mmc/mmcbrvar.h> 73#include <dev/mmc/mmcvar.h> 74 75#include "mmcbr_if.h" 76#include "mmcbus_if.h" 77 78/* 79 * Per-card data 80 */ 81struct mmc_ivars { 82 uint32_t raw_cid[4]; /* Raw bits of the CID */ 83 uint32_t raw_csd[4]; /* Raw bits of the CSD */ 84 uint32_t raw_scr[2]; /* Raw bits of the SCR */ 85 uint8_t raw_ext_csd[MMC_EXTCSD_SIZE]; /* Raw bits of the EXT_CSD */ 86 uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */ 87 uint16_t rca; 88 enum mmc_card_mode mode; 89 struct mmc_cid cid; /* cid decoded */ 90 struct mmc_csd csd; /* csd decoded */ 91 struct mmc_scr scr; /* scr decoded */ 92 struct mmc_sd_status sd_status; /* SD_STATUS decoded */ 93 u_char read_only; /* True when the device is read-only */ 94 u_char bus_width; /* Bus width to use */ 95 u_char timing; /* Bus timing support */ 96 u_char high_cap; /* High Capacity card (block addressed) */ 97 uint32_t sec_count; /* Card capacity in 512byte blocks */ 98 uint32_t tran_speed; /* Max speed in normal mode */ 99 uint32_t hs_tran_speed; /* Max speed in high speed mode */ 100 uint32_t erase_sector; /* Card native erase sector size */ 101 uint32_t cmd6_time; /* Generic switch timeout [us] */ 102 char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */ 103 char card_sn_string[16];/* Formatted serial # for disk->d_ident */ 104}; 105 106#define CMD_RETRIES 3 107 108#define CARD_ID_FREQUENCY 400000 /* Spec requires 400kHz max during ID phase. */ 109 110static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver"); 111 112static int mmc_debug; 113TUNABLE_INT("hw.mmc.debug", &mmc_debug); 114SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RWTUN, &mmc_debug, 0, 115 "Debug level"); 116 117/* bus entry points */ 118static int mmc_acquire_bus(device_t busdev, device_t dev); 119static int mmc_attach(device_t dev); 120static int mmc_child_location_str(device_t dev, device_t child, char *buf, 121 size_t buflen); 122static int mmc_detach(device_t dev); 123static int mmc_probe(device_t dev); 124static int mmc_read_ivar(device_t bus, device_t child, int which, 125 uintptr_t *result); 126static int mmc_release_bus(device_t busdev, device_t dev); 127static int mmc_resume(device_t dev); 128static int mmc_suspend(device_t dev); 129static int mmc_wait_for_request(device_t brdev, device_t reqdev, 130 struct mmc_request *req); 131static 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 143static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid); 144static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr); 145static void mmc_app_decode_sd_status(uint32_t *raw_sd_status, 146 struct mmc_sd_status *sd_status); 147static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, 148 uint32_t *rawsdstatus); 149static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, 150 uint32_t *rawscr); 151static int mmc_calculate_clock(struct mmc_softc *sc); 152static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid, 153 bool is_4_41p); 154static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid); 155static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd); 156static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd); 157static void mmc_delayed_attach(void *xsc); 158static int mmc_delete_cards(struct mmc_softc *sc); 159static void mmc_discover_cards(struct mmc_softc *sc); 160static void mmc_format_card_id_string(struct mmc_ivars *ivar); 161static void mmc_go_discovery(struct mmc_softc *sc); 162static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start, 163 int size); 164static int mmc_highest_voltage(uint32_t ocr); 165static void mmc_idle_cards(struct mmc_softc *sc); 166static void mmc_ms_delay(int ms); 167static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard); 168static void mmc_power_down(struct mmc_softc *sc); 169static void mmc_power_up(struct mmc_softc *sc); 170static void mmc_rescan_cards(struct mmc_softc *sc); 171static void mmc_scan(struct mmc_softc *sc); 172static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, 173 uint8_t value, uint8_t *res); 174static int mmc_select_card(struct mmc_softc *sc, uint16_t rca); 175static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr); 176static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, 177 uint32_t *rocr); 178static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd); 179static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs); 180static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, 181 uint32_t *rocr); 182static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp); 183static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len); 184static int mmc_set_card_bus_width(struct mmc_softc *sc, 185 struct mmc_ivars *ivar); 186static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp); 187static int mmc_set_timing(struct mmc_softc *sc, struct mmc_ivars *ivar, 188 int timing); 189static int mmc_test_bus_width(struct mmc_softc *sc); 190static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 191 uint32_t arg, uint32_t flags, uint32_t *resp, int retries); 192static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req); 193static void mmc_wakeup(struct mmc_request *req); 194 195static void 196mmc_ms_delay(int ms) 197{ 198 199 DELAY(1000 * ms); /* XXX BAD */ 200} 201 202static int 203mmc_probe(device_t dev) 204{ 205 206 device_set_desc(dev, "MMC/SD bus"); 207 return (0); 208} 209 210static int 211mmc_attach(device_t dev) 212{ 213 struct mmc_softc *sc; 214 215 sc = device_get_softc(dev); 216 sc->dev = dev; 217 MMC_LOCK_INIT(sc); 218 219 /* We'll probe and attach our children later, but before / mount */ 220 sc->config_intrhook.ich_func = mmc_delayed_attach; 221 sc->config_intrhook.ich_arg = sc; 222 if (config_intrhook_establish(&sc->config_intrhook) != 0) 223 device_printf(dev, "config_intrhook_establish failed\n"); 224 return (0); 225} 226 227static int 228mmc_detach(device_t dev) 229{ 230 struct mmc_softc *sc = device_get_softc(dev); 231 int err; 232 233 if ((err = mmc_delete_cards(sc)) != 0) 234 return (err); 235 mmc_power_down(sc); 236 MMC_LOCK_DESTROY(sc); 237 238 return (0); 239} 240 241static int 242mmc_suspend(device_t dev) 243{ 244 struct mmc_softc *sc = device_get_softc(dev); 245 int err; 246 247 err = bus_generic_suspend(dev); 248 if (err) 249 return (err); 250 mmc_power_down(sc); 251 return (0); 252} 253 254static int 255mmc_resume(device_t dev) 256{ 257 struct mmc_softc *sc = device_get_softc(dev); 258 259 mmc_scan(sc); 260 return (bus_generic_resume(dev)); 261} 262 263static int 264mmc_acquire_bus(device_t busdev, device_t dev) 265{ 266 struct mmc_softc *sc; 267 struct mmc_ivars *ivar; 268 int err; 269 int rca; 270 271 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev); 272 if (err) 273 return (err); 274 sc = device_get_softc(busdev); 275 MMC_LOCK(sc); 276 if (sc->owner) 277 panic("mmc: host bridge didn't serialize us."); 278 sc->owner = dev; 279 MMC_UNLOCK(sc); 280 281 if (busdev != dev) { 282 /* 283 * Keep track of the last rca that we've selected. If 284 * we're asked to do it again, don't. We never 285 * unselect unless the bus code itself wants the mmc 286 * bus, and constantly reselecting causes problems. 287 */ 288 ivar = device_get_ivars(dev); 289 rca = ivar->rca; 290 if (sc->last_rca != rca) { 291 mmc_select_card(sc, rca); 292 sc->last_rca = rca; 293 /* Prepare bus width for the new card. */ 294 if (bootverbose || mmc_debug) { 295 device_printf(busdev, 296 "setting bus width to %d bits\n", 297 (ivar->bus_width == bus_width_4) ? 4 : 298 (ivar->bus_width == bus_width_8) ? 8 : 1); 299 } 300 mmc_set_card_bus_width(sc, ivar); 301 mmcbr_set_bus_width(busdev, ivar->bus_width); 302 mmcbr_update_ios(busdev); 303 } 304 } else { 305 /* 306 * If there's a card selected, stand down. 307 */ 308 if (sc->last_rca != 0) { 309 mmc_select_card(sc, 0); 310 sc->last_rca = 0; 311 } 312 } 313 314 return (0); 315} 316 317static int 318mmc_release_bus(device_t busdev, device_t dev) 319{ 320 struct mmc_softc *sc; 321 int err; 322 323 sc = device_get_softc(busdev); 324 325 MMC_LOCK(sc); 326 if (!sc->owner) 327 panic("mmc: releasing unowned bus."); 328 if (sc->owner != dev) 329 panic("mmc: you don't own the bus. game over."); 330 MMC_UNLOCK(sc); 331 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev); 332 if (err) 333 return (err); 334 MMC_LOCK(sc); 335 sc->owner = NULL; 336 MMC_UNLOCK(sc); 337 return (0); 338} 339 340static uint32_t 341mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr) 342{ 343 344 return (ocr & MMC_OCR_VOLTAGE); 345} 346 347static int 348mmc_highest_voltage(uint32_t ocr) 349{ 350 int i; 351 352 for (i = MMC_OCR_MAX_VOLTAGE_SHIFT; 353 i >= MMC_OCR_MIN_VOLTAGE_SHIFT; i--) 354 if (ocr & (1 << i)) 355 return (i); 356 return (-1); 357} 358 359static void 360mmc_wakeup(struct mmc_request *req) 361{ 362 struct mmc_softc *sc; 363 364 sc = (struct mmc_softc *)req->done_data; 365 MMC_LOCK(sc); 366 req->flags |= MMC_REQ_DONE; 367 MMC_UNLOCK(sc); 368 wakeup(req); 369} 370 371static int 372mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req) 373{ 374 375 req->done = mmc_wakeup; 376 req->done_data = sc; 377 if (mmc_debug > 1) { 378 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x", 379 req->cmd->opcode, req->cmd->arg, req->cmd->flags); 380 if (req->cmd->data) { 381 printf(" data %d\n", (int)req->cmd->data->len); 382 } else 383 printf("\n"); 384 } 385 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req); 386 MMC_LOCK(sc); 387 while ((req->flags & MMC_REQ_DONE) == 0) 388 msleep(req, &sc->sc_mtx, 0, "mmcreq", 0); 389 MMC_UNLOCK(sc); 390 if (mmc_debug > 2 || (mmc_debug > 0 && req->cmd->error != MMC_ERR_NONE)) 391 device_printf(sc->dev, "CMD%d RESULT: %d\n", 392 req->cmd->opcode, req->cmd->error); 393 return (0); 394} 395 396static int 397mmc_wait_for_request(device_t brdev, device_t reqdev __unused, 398 struct mmc_request *req) 399{ 400 struct mmc_softc *sc = device_get_softc(brdev); 401 402 return (mmc_wait_for_req(sc, req)); 403} 404 405static int 406mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 407 uint32_t arg, uint32_t flags, uint32_t *resp, int retries) 408{ 409 struct mmc_command cmd; 410 int err; 411 412 memset(&cmd, 0, sizeof(cmd)); 413 cmd.opcode = opcode; 414 cmd.arg = arg; 415 cmd.flags = flags; 416 cmd.data = NULL; 417 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, retries); 418 if (err) 419 return (err); 420 if (resp) { 421 if (flags & MMC_RSP_136) 422 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t)); 423 else 424 *resp = cmd.resp[0]; 425 } 426 return (0); 427} 428 429static void 430mmc_idle_cards(struct mmc_softc *sc) 431{ 432 device_t dev; 433 struct mmc_command cmd; 434 435 dev = sc->dev; 436 mmcbr_set_chip_select(dev, cs_high); 437 mmcbr_update_ios(dev); 438 mmc_ms_delay(1); 439 440 memset(&cmd, 0, sizeof(cmd)); 441 cmd.opcode = MMC_GO_IDLE_STATE; 442 cmd.arg = 0; 443 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC; 444 cmd.data = NULL; 445 mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 446 mmc_ms_delay(1); 447 448 mmcbr_set_chip_select(dev, cs_dontcare); 449 mmcbr_update_ios(dev); 450 mmc_ms_delay(1); 451} 452 453static int 454mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 455{ 456 struct mmc_command cmd; 457 int err = MMC_ERR_NONE, i; 458 459 memset(&cmd, 0, sizeof(cmd)); 460 cmd.opcode = ACMD_SD_SEND_OP_COND; 461 cmd.arg = ocr; 462 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 463 cmd.data = NULL; 464 465 for (i = 0; i < 1000; i++) { 466 err = mmc_wait_for_app_cmd(sc->dev, sc->dev, 0, &cmd, 467 CMD_RETRIES); 468 if (err != MMC_ERR_NONE) 469 break; 470 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 471 (ocr & MMC_OCR_VOLTAGE) == 0) 472 break; 473 err = MMC_ERR_TIMEOUT; 474 mmc_ms_delay(10); 475 } 476 if (rocr && err == MMC_ERR_NONE) 477 *rocr = cmd.resp[0]; 478 return (err); 479} 480 481static int 482mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 483{ 484 struct mmc_command cmd; 485 int err = MMC_ERR_NONE, i; 486 487 memset(&cmd, 0, sizeof(cmd)); 488 cmd.opcode = MMC_SEND_OP_COND; 489 cmd.arg = ocr; 490 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 491 cmd.data = NULL; 492 493 for (i = 0; i < 1000; i++) { 494 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 495 if (err != MMC_ERR_NONE) 496 break; 497 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 498 (ocr & MMC_OCR_VOLTAGE) == 0) 499 break; 500 err = MMC_ERR_TIMEOUT; 501 mmc_ms_delay(10); 502 } 503 if (rocr && err == MMC_ERR_NONE) 504 *rocr = cmd.resp[0]; 505 return (err); 506} 507 508static int 509mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs) 510{ 511 struct mmc_command cmd; 512 int err; 513 514 memset(&cmd, 0, sizeof(cmd)); 515 cmd.opcode = SD_SEND_IF_COND; 516 cmd.arg = (vhs << 8) + 0xAA; 517 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR; 518 cmd.data = NULL; 519 520 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 521 return (err); 522} 523 524static void 525mmc_power_up(struct mmc_softc *sc) 526{ 527 device_t dev; 528 529 dev = sc->dev; 530 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev))); 531 mmcbr_set_bus_mode(dev, opendrain); 532 mmcbr_set_chip_select(dev, cs_dontcare); 533 mmcbr_set_bus_width(dev, bus_width_1); 534 mmcbr_set_power_mode(dev, power_up); 535 mmcbr_set_clock(dev, 0); 536 mmcbr_update_ios(dev); 537 mmc_ms_delay(1); 538 539 mmcbr_set_clock(dev, CARD_ID_FREQUENCY); 540 mmcbr_set_timing(dev, bus_timing_normal); 541 mmcbr_set_power_mode(dev, power_on); 542 mmcbr_update_ios(dev); 543 mmc_ms_delay(2); 544} 545 546static void 547mmc_power_down(struct mmc_softc *sc) 548{ 549 device_t dev = sc->dev; 550 551 mmcbr_set_bus_mode(dev, opendrain); 552 mmcbr_set_chip_select(dev, cs_dontcare); 553 mmcbr_set_bus_width(dev, bus_width_1); 554 mmcbr_set_power_mode(dev, power_off); 555 mmcbr_set_clock(dev, 0); 556 mmcbr_set_timing(dev, bus_timing_normal); 557 mmcbr_update_ios(dev); 558} 559 560static int 561mmc_select_card(struct mmc_softc *sc, uint16_t rca) 562{ 563 int flags; 564 565 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC; 566 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16, 567 flags, NULL, CMD_RETRIES)); 568} 569 570static int 571mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value, 572 uint8_t *res) 573{ 574 int err; 575 struct mmc_command cmd; 576 struct mmc_data data; 577 578 memset(&cmd, 0, sizeof(cmd)); 579 memset(&data, 0, sizeof(data)); 580 memset(res, 0, 64); 581 582 cmd.opcode = SD_SWITCH_FUNC; 583 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 584 cmd.arg = mode << 31; /* 0 - check, 1 - set */ 585 cmd.arg |= 0x00FFFFFF; 586 cmd.arg &= ~(0xF << (grp * 4)); 587 cmd.arg |= value << (grp * 4); 588 cmd.data = &data; 589 590 data.data = res; 591 data.len = 64; 592 data.flags = MMC_DATA_READ; 593 594 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 595 return (err); 596} 597 598static int 599mmc_set_card_bus_width(struct mmc_softc *sc, struct mmc_ivars *ivar) 600{ 601 struct mmc_command cmd; 602 int err; 603 uint8_t value; 604 605 if (mmcbr_get_mode(sc->dev) == mode_sd) { 606 memset(&cmd, 0, sizeof(cmd)); 607 cmd.opcode = ACMD_SET_CLR_CARD_DETECT; 608 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 609 cmd.arg = SD_CLR_CARD_DETECT; 610 err = mmc_wait_for_app_cmd(sc->dev, sc->dev, ivar->rca, &cmd, 611 CMD_RETRIES); 612 if (err != 0) 613 return (err); 614 memset(&cmd, 0, sizeof(cmd)); 615 cmd.opcode = ACMD_SET_BUS_WIDTH; 616 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 617 switch (ivar->bus_width) { 618 case bus_width_1: 619 cmd.arg = SD_BUS_WIDTH_1; 620 break; 621 case bus_width_4: 622 cmd.arg = SD_BUS_WIDTH_4; 623 break; 624 default: 625 return (MMC_ERR_INVALID); 626 } 627 err = mmc_wait_for_app_cmd(sc->dev, sc->dev, ivar->rca, &cmd, 628 CMD_RETRIES); 629 } else { 630 switch (ivar->bus_width) { 631 case bus_width_1: 632 value = EXT_CSD_BUS_WIDTH_1; 633 break; 634 case bus_width_4: 635 value = EXT_CSD_BUS_WIDTH_4; 636 break; 637 case bus_width_8: 638 value = EXT_CSD_BUS_WIDTH_8; 639 break; 640 default: 641 return (MMC_ERR_INVALID); 642 } 643 err = mmc_switch(sc->dev, sc->dev, ivar->rca, 644 EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, value, 645 ivar->cmd6_time, true); 646 } 647 return (err); 648} 649 650static int 651mmc_set_timing(struct mmc_softc *sc, struct mmc_ivars *ivar, int timing) 652{ 653 u_char switch_res[64]; 654 uint8_t value; 655 int err; 656 657 switch (timing) { 658 case bus_timing_normal: 659 value = 0; 660 break; 661 case bus_timing_hs: 662 value = 1; 663 break; 664 default: 665 return (MMC_ERR_INVALID); 666 } 667 if (mmcbr_get_mode(sc->dev) == mode_sd) { 668 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, 669 value, switch_res); 670 if (err != MMC_ERR_NONE) 671 return (err); 672 if ((switch_res[16] & 0xf) != value) 673 return (MMC_ERR_FAILED); 674 mmcbr_set_timing(sc->dev, timing); 675 mmcbr_update_ios(sc->dev); 676 } else { 677 err = mmc_switch(sc->dev, sc->dev, ivar->rca, 678 EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, value, 679 ivar->cmd6_time, false); 680 if (err != MMC_ERR_NONE) 681 return (err); 682 mmcbr_set_timing(sc->dev, timing); 683 mmcbr_update_ios(sc->dev); 684 err = mmc_switch_status(sc->dev, sc->dev, ivar->rca, 685 ivar->cmd6_time); 686 } 687 return (err); 688} 689 690static const uint8_t p8[8] = { 691 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 692}; 693 694static const uint8_t p8ok[8] = { 695 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 696}; 697 698static const uint8_t p4[4] = { 699 0x5A, 0x00, 0x00, 0x00 700}; 701 702static const uint8_t p4ok[4] = { 703 0xA5, 0x00, 0x00, 0x00 704}; 705 706static int 707mmc_test_bus_width(struct mmc_softc *sc) 708{ 709 struct mmc_command cmd; 710 struct mmc_data data; 711 uint8_t buf[8]; 712 int err; 713 714 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) { 715 mmcbr_set_bus_width(sc->dev, bus_width_8); 716 mmcbr_update_ios(sc->dev); 717 718 sc->squelched++; /* Errors are expected, squelch reporting. */ 719 memset(&cmd, 0, sizeof(cmd)); 720 memset(&data, 0, sizeof(data)); 721 cmd.opcode = MMC_BUSTEST_W; 722 cmd.arg = 0; 723 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 724 cmd.data = &data; 725 726 data.data = __DECONST(void *, p8); 727 data.len = 8; 728 data.flags = MMC_DATA_WRITE; 729 mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, 0); 730 731 memset(&cmd, 0, sizeof(cmd)); 732 memset(&data, 0, sizeof(data)); 733 cmd.opcode = MMC_BUSTEST_R; 734 cmd.arg = 0; 735 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 736 cmd.data = &data; 737 738 data.data = buf; 739 data.len = 8; 740 data.flags = MMC_DATA_READ; 741 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, 0); 742 sc->squelched--; 743 744 mmcbr_set_bus_width(sc->dev, bus_width_1); 745 mmcbr_update_ios(sc->dev); 746 747 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0) 748 return (bus_width_8); 749 } 750 751 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) { 752 mmcbr_set_bus_width(sc->dev, bus_width_4); 753 mmcbr_update_ios(sc->dev); 754 755 sc->squelched++; /* Errors are expected, squelch reporting. */ 756 memset(&cmd, 0, sizeof(cmd)); 757 memset(&data, 0, sizeof(data)); 758 cmd.opcode = MMC_BUSTEST_W; 759 cmd.arg = 0; 760 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 761 cmd.data = &data; 762 763 data.data = __DECONST(void *, p4); 764 data.len = 4; 765 data.flags = MMC_DATA_WRITE; 766 mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, 0); 767 768 memset(&cmd, 0, sizeof(cmd)); 769 memset(&data, 0, sizeof(data)); 770 cmd.opcode = MMC_BUSTEST_R; 771 cmd.arg = 0; 772 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 773 cmd.data = &data; 774 775 data.data = buf; 776 data.len = 4; 777 data.flags = MMC_DATA_READ; 778 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, 0); 779 sc->squelched--; 780 781 mmcbr_set_bus_width(sc->dev, bus_width_1); 782 mmcbr_update_ios(sc->dev); 783 784 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0) 785 return (bus_width_4); 786 } 787 return (bus_width_1); 788} 789 790static uint32_t 791mmc_get_bits(uint32_t *bits, int bit_len, int start, int size) 792{ 793 const int i = (bit_len / 32) - (start / 32) - 1; 794 const int shift = start & 31; 795 uint32_t retval = bits[i] >> shift; 796 797 if (size + shift > 32) 798 retval |= bits[i - 1] << (32 - shift); 799 return (retval & ((1llu << size) - 1)); 800} 801 802static void 803mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid) 804{ 805 int i; 806 807 /* There's no version info, so we take it on faith */ 808 memset(cid, 0, sizeof(*cid)); 809 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 810 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16); 811 for (i = 0; i < 5; i++) 812 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 813 cid->pnm[5] = 0; 814 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8); 815 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32); 816 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000; 817 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4); 818} 819 820static void 821mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid, bool is_4_41p) 822{ 823 int i; 824 825 /* There's no version info, so we take it on faith */ 826 memset(cid, 0, sizeof(*cid)); 827 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 828 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8); 829 for (i = 0; i < 6; i++) 830 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 831 cid->pnm[6] = 0; 832 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8); 833 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32); 834 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4); 835 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4); 836 if (is_4_41p) 837 cid->mdt_year += 2013; 838 else 839 cid->mdt_year += 1997; 840} 841 842static void 843mmc_format_card_id_string(struct mmc_ivars *ivar) 844{ 845 char oidstr[8]; 846 uint8_t c1; 847 uint8_t c2; 848 849 /* 850 * Format a card ID string for use by the mmcsd driver, it's what 851 * appears between the <> in the following: 852 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0 853 * 22.5MHz/4bit/128-block 854 * 855 * Also format just the card serial number, which the mmcsd driver will 856 * use as the disk->d_ident string. 857 * 858 * The card_id_string in mmc_ivars is currently allocated as 64 bytes, 859 * and our max formatted length is currently 55 bytes if every field 860 * contains the largest value. 861 * 862 * Sometimes the oid is two printable ascii chars; when it's not, 863 * format it as 0xnnnn instead. 864 */ 865 c1 = (ivar->cid.oid >> 8) & 0x0ff; 866 c2 = ivar->cid.oid & 0x0ff; 867 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f) 868 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2); 869 else 870 snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid); 871 snprintf(ivar->card_sn_string, sizeof(ivar->card_sn_string), 872 "%08X", ivar->cid.psn); 873 snprintf(ivar->card_id_string, sizeof(ivar->card_id_string), 874 "%s%s %s %d.%d SN %08X MFG %02d/%04d by %d %s", 875 ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "", 876 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f, 877 ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year, 878 ivar->cid.mid, oidstr); 879} 880 881static const int exp[8] = { 882 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 883}; 884 885static const int mant[16] = { 886 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 887}; 888 889static const int cur_min[8] = { 890 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000 891}; 892 893static const int cur_max[8] = { 894 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000 895}; 896 897static void 898mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd) 899{ 900 int v; 901 int m; 902 int e; 903 904 memset(csd, 0, sizeof(*csd)); 905 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2); 906 if (v == 0) { 907 m = mmc_get_bits(raw_csd, 128, 115, 4); 908 e = mmc_get_bits(raw_csd, 128, 112, 3); 909 csd->tacc = (exp[e] * mant[m] + 9) / 10; 910 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 911 m = mmc_get_bits(raw_csd, 128, 99, 4); 912 e = mmc_get_bits(raw_csd, 128, 96, 3); 913 csd->tran_speed = exp[e] * 10000 * mant[m]; 914 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 915 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 916 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 917 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 918 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 919 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 920 csd->vdd_r_curr_min = 921 cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 922 csd->vdd_r_curr_max = 923 cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 924 csd->vdd_w_curr_min = 925 cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 926 csd->vdd_w_curr_max = 927 cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 928 m = mmc_get_bits(raw_csd, 128, 62, 12); 929 e = mmc_get_bits(raw_csd, 128, 47, 3); 930 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 931 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 932 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 933 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 934 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 935 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 936 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 937 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 938 } else if (v == 1) { 939 m = mmc_get_bits(raw_csd, 128, 115, 4); 940 e = mmc_get_bits(raw_csd, 128, 112, 3); 941 csd->tacc = (exp[e] * mant[m] + 9) / 10; 942 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 943 m = mmc_get_bits(raw_csd, 128, 99, 4); 944 e = mmc_get_bits(raw_csd, 128, 96, 3); 945 csd->tran_speed = exp[e] * 10000 * mant[m]; 946 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 947 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 948 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 949 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 950 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 951 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 952 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 953 1) * 512 * 1024; 954 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 955 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 956 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 957 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 958 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 959 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 960 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 961 } else 962 panic("unknown SD CSD version"); 963} 964 965static void 966mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd) 967{ 968 int m; 969 int e; 970 971 memset(csd, 0, sizeof(*csd)); 972 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2); 973 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4); 974 m = mmc_get_bits(raw_csd, 128, 115, 4); 975 e = mmc_get_bits(raw_csd, 128, 112, 3); 976 csd->tacc = exp[e] * mant[m] + 9 / 10; 977 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 978 m = mmc_get_bits(raw_csd, 128, 99, 4); 979 e = mmc_get_bits(raw_csd, 128, 96, 3); 980 csd->tran_speed = exp[e] * 10000 * mant[m]; 981 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 982 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 983 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 984 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 985 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 986 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 987 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 988 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 989 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 990 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 991 m = mmc_get_bits(raw_csd, 128, 62, 12); 992 e = mmc_get_bits(raw_csd, 128, 47, 3); 993 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 994 csd->erase_blk_en = 0; 995 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) * 996 (mmc_get_bits(raw_csd, 128, 37, 5) + 1); 997 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5); 998 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 999 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 1000 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 1001 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 1002} 1003 1004static void 1005mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr) 1006{ 1007 unsigned int scr_struct; 1008 1009 memset(scr, 0, sizeof(*scr)); 1010 1011 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4); 1012 if (scr_struct != 0) { 1013 printf("Unrecognised SCR structure version %d\n", 1014 scr_struct); 1015 return; 1016 } 1017 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4); 1018 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4); 1019} 1020 1021static void 1022mmc_app_decode_sd_status(uint32_t *raw_sd_status, 1023 struct mmc_sd_status *sd_status) 1024{ 1025 1026 memset(sd_status, 0, sizeof(*sd_status)); 1027 1028 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2); 1029 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1); 1030 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16); 1031 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12); 1032 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8); 1033 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8); 1034 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4); 1035 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16); 1036 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6); 1037 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2); 1038} 1039 1040static int 1041mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid) 1042{ 1043 struct mmc_command cmd; 1044 int err; 1045 1046 memset(&cmd, 0, sizeof(cmd)); 1047 cmd.opcode = MMC_ALL_SEND_CID; 1048 cmd.arg = 0; 1049 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 1050 cmd.data = NULL; 1051 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 1052 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t)); 1053 return (err); 1054} 1055 1056static int 1057mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd) 1058{ 1059 struct mmc_command cmd; 1060 int err; 1061 1062 memset(&cmd, 0, sizeof(cmd)); 1063 cmd.opcode = MMC_SEND_CSD; 1064 cmd.arg = rca << 16; 1065 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 1066 cmd.data = NULL; 1067 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 1068 memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t)); 1069 return (err); 1070} 1071 1072static int 1073mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr) 1074{ 1075 int err; 1076 struct mmc_command cmd; 1077 struct mmc_data data; 1078 1079 memset(&cmd, 0, sizeof(cmd)); 1080 memset(&data, 0, sizeof(data)); 1081 1082 memset(rawscr, 0, 8); 1083 cmd.opcode = ACMD_SEND_SCR; 1084 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1085 cmd.arg = 0; 1086 cmd.data = &data; 1087 1088 data.data = rawscr; 1089 data.len = 8; 1090 data.flags = MMC_DATA_READ; 1091 1092 err = mmc_wait_for_app_cmd(sc->dev, sc->dev, rca, &cmd, CMD_RETRIES); 1093 rawscr[0] = be32toh(rawscr[0]); 1094 rawscr[1] = be32toh(rawscr[1]); 1095 return (err); 1096} 1097 1098static int 1099mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus) 1100{ 1101 struct mmc_command cmd; 1102 struct mmc_data data; 1103 int err, i; 1104 1105 memset(&cmd, 0, sizeof(cmd)); 1106 memset(&data, 0, sizeof(data)); 1107 1108 memset(rawsdstatus, 0, 64); 1109 cmd.opcode = ACMD_SD_STATUS; 1110 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1111 cmd.arg = 0; 1112 cmd.data = &data; 1113 1114 data.data = rawsdstatus; 1115 data.len = 64; 1116 data.flags = MMC_DATA_READ; 1117 1118 err = mmc_wait_for_app_cmd(sc->dev, sc->dev, rca, &cmd, CMD_RETRIES); 1119 for (i = 0; i < 16; i++) 1120 rawsdstatus[i] = be32toh(rawsdstatus[i]); 1121 return (err); 1122} 1123 1124static int 1125mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp) 1126{ 1127 struct mmc_command cmd; 1128 int err; 1129 1130 memset(&cmd, 0, sizeof(cmd)); 1131 cmd.opcode = MMC_SET_RELATIVE_ADDR; 1132 cmd.arg = resp << 16; 1133 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1134 cmd.data = NULL; 1135 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 1136 return (err); 1137} 1138 1139static int 1140mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp) 1141{ 1142 struct mmc_command cmd; 1143 int err; 1144 1145 memset(&cmd, 0, sizeof(cmd)); 1146 cmd.opcode = SD_SEND_RELATIVE_ADDR; 1147 cmd.arg = 0; 1148 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1149 cmd.data = NULL; 1150 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 1151 *resp = cmd.resp[0]; 1152 return (err); 1153} 1154 1155static int 1156mmc_set_blocklen(struct mmc_softc *sc, uint32_t len) 1157{ 1158 struct mmc_command cmd; 1159 int err; 1160 1161 memset(&cmd, 0, sizeof(cmd)); 1162 cmd.opcode = MMC_SET_BLOCKLEN; 1163 cmd.arg = len; 1164 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1165 cmd.data = NULL; 1166 err = mmc_wait_for_cmd(sc->dev, sc->dev, &cmd, CMD_RETRIES); 1167 return (err); 1168} 1169 1170static void 1171mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard) 1172{ 1173 1174 device_printf(dev, "Card at relative address 0x%04x%s:\n", 1175 ivar->rca, newcard ? " added" : ""); 1176 device_printf(dev, " card: %s\n", ivar->card_id_string); 1177 device_printf(dev, " bus: %ubit, %uMHz%s\n", 1178 (ivar->bus_width == bus_width_1 ? 1 : 1179 (ivar->bus_width == bus_width_4 ? 4 : 8)), 1180 (ivar->timing == bus_timing_hs ? 1181 ivar->hs_tran_speed : ivar->tran_speed) / 1000000, 1182 ivar->timing == bus_timing_hs ? ", high speed timing" : ""); 1183 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n", 1184 ivar->sec_count, ivar->erase_sector, 1185 ivar->read_only ? ", read-only" : ""); 1186} 1187 1188static void 1189mmc_discover_cards(struct mmc_softc *sc) 1190{ 1191 u_char switch_res[64]; 1192 uint32_t raw_cid[4]; 1193 struct mmc_ivars *ivar = NULL; 1194 device_t *devlist; 1195 device_t child; 1196 int err, i, devcount, newcard; 1197 uint32_t resp, sec_count, status; 1198 uint16_t rca = 2; 1199 1200 if (bootverbose || mmc_debug) 1201 device_printf(sc->dev, "Probing cards\n"); 1202 while (1) { 1203 sc->squelched++; /* Errors are expected, squelch reporting. */ 1204 err = mmc_all_send_cid(sc, raw_cid); 1205 sc->squelched--; 1206 if (err == MMC_ERR_TIMEOUT) 1207 break; 1208 if (err != MMC_ERR_NONE) { 1209 device_printf(sc->dev, "Error reading CID %d\n", err); 1210 break; 1211 } 1212 newcard = 1; 1213 if ((err = device_get_children(sc->dev, &devlist, 1214 &devcount)) != 0) 1215 return; 1216 for (i = 0; i < devcount; i++) { 1217 ivar = device_get_ivars(devlist[i]); 1218 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 1219 0) { 1220 newcard = 0; 1221 break; 1222 } 1223 } 1224 free(devlist, M_TEMP); 1225 if (bootverbose || mmc_debug) { 1226 device_printf(sc->dev, 1227 "%sard detected (CID %08x%08x%08x%08x)\n", 1228 newcard ? "New c" : "C", 1229 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]); 1230 } 1231 if (newcard) { 1232 ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF, 1233 M_WAITOK | M_ZERO); 1234 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid)); 1235 } 1236 if (mmcbr_get_ro(sc->dev)) 1237 ivar->read_only = 1; 1238 ivar->bus_width = bus_width_1; 1239 ivar->timing = bus_timing_normal; 1240 ivar->mode = mmcbr_get_mode(sc->dev); 1241 if (ivar->mode == mode_sd) { 1242 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid); 1243 mmc_send_relative_addr(sc, &resp); 1244 ivar->rca = resp >> 16; 1245 /* Get card CSD. */ 1246 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1247 if (bootverbose || mmc_debug) 1248 device_printf(sc->dev, 1249 "%sard detected (CSD %08x%08x%08x%08x)\n", 1250 newcard ? "New c" : "C", ivar->raw_csd[0], 1251 ivar->raw_csd[1], ivar->raw_csd[2], 1252 ivar->raw_csd[3]); 1253 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd); 1254 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1255 if (ivar->csd.csd_structure > 0) 1256 ivar->high_cap = 1; 1257 ivar->tran_speed = ivar->csd.tran_speed; 1258 ivar->erase_sector = ivar->csd.erase_sector * 1259 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1260 1261 err = mmc_send_status(sc->dev, sc->dev, ivar->rca, 1262 &status); 1263 if (err != MMC_ERR_NONE) { 1264 device_printf(sc->dev, 1265 "Error reading card status %d\n", err); 1266 break; 1267 } 1268 if ((status & R1_CARD_IS_LOCKED) != 0) { 1269 device_printf(sc->dev, 1270 "Card is password protected, skipping.\n"); 1271 break; 1272 } 1273 1274 /* Get card SCR. Card must be selected to fetch it. */ 1275 mmc_select_card(sc, ivar->rca); 1276 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr); 1277 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr); 1278 /* Get card switch capabilities (command class 10). */ 1279 if ((ivar->scr.sda_vsn >= 1) && 1280 (ivar->csd.ccc & (1 << 10))) { 1281 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK, 1282 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, 1283 switch_res); 1284 if (switch_res[13] & (1 << SD_SWITCH_HS_MODE)) { 1285 ivar->timing = bus_timing_hs; 1286 ivar->hs_tran_speed = SD_MAX_HS; 1287 } 1288 } 1289 1290 /* 1291 * We deselect then reselect the card here. Some cards 1292 * become unselected and timeout with the above two 1293 * commands, although the state tables / diagrams in the 1294 * standard suggest they go back to the transfer state. 1295 * Other cards don't become deselected, and if we 1296 * attempt to blindly re-select them, we get timeout 1297 * errors from some controllers. So we deselect then 1298 * reselect to handle all situations. The only thing we 1299 * use from the sd_status is the erase sector size, but 1300 * it is still nice to get that right. 1301 */ 1302 mmc_select_card(sc, 0); 1303 mmc_select_card(sc, ivar->rca); 1304 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status); 1305 mmc_app_decode_sd_status(ivar->raw_sd_status, 1306 &ivar->sd_status); 1307 if (ivar->sd_status.au_size != 0) { 1308 ivar->erase_sector = 1309 16 << ivar->sd_status.au_size; 1310 } 1311 /* Find max supported bus width. */ 1312 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) && 1313 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) 1314 ivar->bus_width = bus_width_4; 1315 1316 /* 1317 * Some cards that report maximum I/O block sizes 1318 * greater than 512 require the block length to be 1319 * set to 512, even though that is supposed to be 1320 * the default. Example: 1321 * 1322 * Transcend 2GB SDSC card, CID: 1323 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000 1324 */ 1325 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE || 1326 ivar->csd.write_bl_len != MMC_SECTOR_SIZE) 1327 mmc_set_blocklen(sc, MMC_SECTOR_SIZE); 1328 1329 mmc_format_card_id_string(ivar); 1330 1331 if (bootverbose || mmc_debug) 1332 mmc_log_card(sc->dev, ivar, newcard); 1333 if (newcard) { 1334 /* Add device. */ 1335 child = device_add_child(sc->dev, NULL, -1); 1336 device_set_ivars(child, ivar); 1337 } 1338 mmc_select_card(sc, 0); 1339 return; 1340 } 1341 ivar->rca = rca++; 1342 mmc_set_relative_addr(sc, ivar->rca); 1343 /* Get card CSD. */ 1344 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1345 if (bootverbose || mmc_debug) 1346 device_printf(sc->dev, 1347 "%sard detected (CSD %08x%08x%08x%08x)\n", 1348 newcard ? "New c" : "C", ivar->raw_csd[0], 1349 ivar->raw_csd[1], ivar->raw_csd[2], 1350 ivar->raw_csd[3]); 1351 1352 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd); 1353 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1354 ivar->tran_speed = ivar->csd.tran_speed; 1355 ivar->erase_sector = ivar->csd.erase_sector * 1356 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1357 1358 err = mmc_send_status(sc->dev, sc->dev, ivar->rca, &status); 1359 if (err != MMC_ERR_NONE) { 1360 device_printf(sc->dev, 1361 "Error reading card status %d\n", err); 1362 break; 1363 } 1364 if ((status & R1_CARD_IS_LOCKED) != 0) { 1365 device_printf(sc->dev, 1366 "Card is password protected, skipping.\n"); 1367 break; 1368 } 1369 1370 mmc_select_card(sc, ivar->rca); 1371 1372 /* Only MMC >= 4.x devices support EXT_CSD. */ 1373 if (ivar->csd.spec_vers >= 4) { 1374 err = mmc_send_ext_csd(sc->dev, sc->dev, 1375 ivar->raw_ext_csd); 1376 if (err != MMC_ERR_NONE) { 1377 device_printf(sc->dev, 1378 "Error reading EXT_CSD %d\n", err); 1379 break; 1380 } 1381 /* Handle extended capacity from EXT_CSD */ 1382 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] + 1383 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) + 1384 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) + 1385 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24); 1386 if (sec_count != 0) { 1387 ivar->sec_count = sec_count; 1388 ivar->high_cap = 1; 1389 } 1390 /* Get card speed in high speed mode. */ 1391 ivar->timing = bus_timing_hs; 1392 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1393 & EXT_CSD_CARD_TYPE_52) 1394 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS; 1395 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1396 & EXT_CSD_CARD_TYPE_26) 1397 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS; 1398 else 1399 ivar->hs_tran_speed = ivar->tran_speed; 1400 /* 1401 * Determine generic switch timeout (provided in 1402 * units of 10 ms), defaulting to 500 ms. 1403 */ 1404 ivar->cmd6_time = 500 * 1000; 1405 if (ivar->csd.spec_vers >= 6) 1406 ivar->cmd6_time = 10 * 1407 ivar->raw_ext_csd[EXT_CSD_GEN_CMD6_TIME]; 1408 /* Find max supported bus width. */ 1409 ivar->bus_width = mmc_test_bus_width(sc); 1410 /* Handle HC erase sector size. */ 1411 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) { 1412 ivar->erase_sector = 1024 * 1413 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE]; 1414 err = mmc_switch(sc->dev, sc->dev, ivar->rca, 1415 EXT_CSD_CMD_SET_NORMAL, 1416 EXT_CSD_ERASE_GRP_DEF, 1417 EXT_CSD_ERASE_GRP_DEF_EN, 1418 ivar->cmd6_time, true); 1419 if (err != MMC_ERR_NONE) { 1420 device_printf(sc->dev, 1421 "Error setting erase group %d\n", 1422 err); 1423 break; 1424 } 1425 } 1426 } else { 1427 ivar->bus_width = bus_width_1; 1428 ivar->timing = bus_timing_normal; 1429 } 1430 1431 /* 1432 * Some cards that report maximum I/O block sizes greater 1433 * than 512 require the block length to be set to 512, even 1434 * though that is supposed to be the default. Example: 1435 * 1436 * Transcend 2GB SDSC card, CID: 1437 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000 1438 */ 1439 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE || 1440 ivar->csd.write_bl_len != MMC_SECTOR_SIZE) 1441 mmc_set_blocklen(sc, MMC_SECTOR_SIZE); 1442 1443 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid, 1444 ivar->raw_ext_csd[EXT_CSD_REV] >= 5); 1445 mmc_format_card_id_string(ivar); 1446 1447 if (bootverbose || mmc_debug) 1448 mmc_log_card(sc->dev, ivar, newcard); 1449 if (newcard) { 1450 /* Add device. */ 1451 child = device_add_child(sc->dev, NULL, -1); 1452 device_set_ivars(child, ivar); 1453 } 1454 mmc_select_card(sc, 0); 1455 } 1456} 1457 1458static void 1459mmc_rescan_cards(struct mmc_softc *sc) 1460{ 1461 struct mmc_ivars *ivar; 1462 device_t *devlist; 1463 int err, i, devcount; 1464 1465 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1466 return; 1467 for (i = 0; i < devcount; i++) { 1468 ivar = device_get_ivars(devlist[i]); 1469 if (mmc_select_card(sc, ivar->rca) != MMC_ERR_NONE) { 1470 if (bootverbose || mmc_debug) 1471 device_printf(sc->dev, 1472 "Card at relative address %d lost.\n", 1473 ivar->rca); 1474 device_delete_child(sc->dev, devlist[i]); 1475 free(ivar, M_DEVBUF); 1476 } 1477 } 1478 free(devlist, M_TEMP); 1479 mmc_select_card(sc, 0); 1480} 1481 1482static int 1483mmc_delete_cards(struct mmc_softc *sc) 1484{ 1485 struct mmc_ivars *ivar; 1486 device_t *devlist; 1487 int err, i, devcount; 1488 1489 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1490 return (err); 1491 for (i = 0; i < devcount; i++) { 1492 ivar = device_get_ivars(devlist[i]); 1493 if (bootverbose || mmc_debug) 1494 device_printf(sc->dev, 1495 "Card at relative address %d deleted.\n", 1496 ivar->rca); 1497 device_delete_child(sc->dev, devlist[i]); 1498 free(ivar, M_DEVBUF); 1499 } 1500 free(devlist, M_TEMP); 1501 return (0); 1502} 1503 1504static void 1505mmc_go_discovery(struct mmc_softc *sc) 1506{ 1507 uint32_t ocr; 1508 device_t dev; 1509 int err; 1510 1511 dev = sc->dev; 1512 if (mmcbr_get_power_mode(dev) != power_on) { 1513 /* 1514 * First, try SD modes 1515 */ 1516 sc->squelched++; /* Errors are expected, squelch reporting. */ 1517 mmcbr_set_mode(dev, mode_sd); 1518 mmc_power_up(sc); 1519 mmcbr_set_bus_mode(dev, pushpull); 1520 if (bootverbose || mmc_debug) 1521 device_printf(sc->dev, "Probing bus\n"); 1522 mmc_idle_cards(sc); 1523 err = mmc_send_if_cond(sc, 1); 1524 if ((bootverbose || mmc_debug) && err == 0) 1525 device_printf(sc->dev, 1526 "SD 2.0 interface conditions: OK\n"); 1527 if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) { 1528 if (bootverbose || mmc_debug) 1529 device_printf(sc->dev, "SD probe: failed\n"); 1530 /* 1531 * Failed, try MMC 1532 */ 1533 mmcbr_set_mode(dev, mode_mmc); 1534 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) { 1535 if (bootverbose || mmc_debug) 1536 device_printf(sc->dev, 1537 "MMC probe: failed\n"); 1538 ocr = 0; /* Failed both, powerdown. */ 1539 } else if (bootverbose || mmc_debug) 1540 device_printf(sc->dev, 1541 "MMC probe: OK (OCR: 0x%08x)\n", ocr); 1542 } else if (bootverbose || mmc_debug) 1543 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", 1544 ocr); 1545 sc->squelched--; 1546 1547 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr)); 1548 if (mmcbr_get_ocr(dev) != 0) 1549 mmc_idle_cards(sc); 1550 } else { 1551 mmcbr_set_bus_mode(dev, opendrain); 1552 mmcbr_set_clock(dev, CARD_ID_FREQUENCY); 1553 mmcbr_update_ios(dev); 1554 /* XXX recompute vdd based on new cards? */ 1555 } 1556 /* 1557 * Make sure that we have a mutually agreeable voltage to at least 1558 * one card on the bus. 1559 */ 1560 if (bootverbose || mmc_debug) 1561 device_printf(sc->dev, "Current OCR: 0x%08x\n", 1562 mmcbr_get_ocr(dev)); 1563 if (mmcbr_get_ocr(dev) == 0) { 1564 device_printf(sc->dev, "No compatible cards found on bus\n"); 1565 mmc_delete_cards(sc); 1566 mmc_power_down(sc); 1567 return; 1568 } 1569 /* 1570 * Reselect the cards after we've idled them above. 1571 */ 1572 if (mmcbr_get_mode(dev) == mode_sd) { 1573 err = mmc_send_if_cond(sc, 1); 1574 mmc_send_app_op_cond(sc, 1575 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL); 1576 } else 1577 mmc_send_op_cond(sc, MMC_OCR_CCS | mmcbr_get_ocr(dev), NULL); 1578 mmc_discover_cards(sc); 1579 mmc_rescan_cards(sc); 1580 1581 mmcbr_set_bus_mode(dev, pushpull); 1582 mmcbr_update_ios(dev); 1583 mmc_calculate_clock(sc); 1584} 1585 1586static int 1587mmc_calculate_clock(struct mmc_softc *sc) 1588{ 1589 device_t *kids; 1590 struct mmc_ivars *ivar; 1591 int i, f_max, max_dtr, max_hs_dtr, max_timing, nkid; 1592 1593 f_max = mmcbr_get_f_max(sc->dev); 1594 max_dtr = max_hs_dtr = f_max; 1595 if (mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED) 1596 max_timing = bus_timing_hs; 1597 else 1598 max_timing = bus_timing_normal; 1599 if (device_get_children(sc->dev, &kids, &nkid) != 0) 1600 panic("can't get children"); 1601 for (i = 0; i < nkid; i++) { 1602 ivar = device_get_ivars(kids[i]); 1603 if (ivar->timing < max_timing) 1604 max_timing = ivar->timing; 1605 if (ivar->tran_speed < max_dtr) 1606 max_dtr = ivar->tran_speed; 1607 if (ivar->hs_tran_speed < max_hs_dtr) 1608 max_hs_dtr = ivar->hs_tran_speed; 1609 } 1610 if (bootverbose || mmc_debug) { 1611 device_printf(sc->dev, 1612 "setting transfer rate to %d.%03dMHz%s\n", 1613 max_dtr / 1000000, (max_dtr / 1000) % 1000, 1614 max_timing == bus_timing_hs ? " (high speed timing)" : ""); 1615 } 1616 for (i = 0; i < nkid; i++) { 1617 ivar = device_get_ivars(kids[i]); 1618 if (ivar->timing == bus_timing_normal) 1619 continue; 1620 mmc_select_card(sc, ivar->rca); 1621 mmc_set_timing(sc, ivar, max_timing); 1622 } 1623 mmc_select_card(sc, 0); 1624 free(kids, M_TEMP); 1625 if (max_timing == bus_timing_hs) 1626 max_dtr = max_hs_dtr; 1627 mmcbr_set_clock(sc->dev, max_dtr); 1628 mmcbr_update_ios(sc->dev); 1629 return (max_dtr); 1630} 1631 1632static void 1633mmc_scan(struct mmc_softc *sc) 1634{ 1635 device_t dev = sc->dev; 1636 1637 mmc_acquire_bus(dev, dev); 1638 mmc_go_discovery(sc); 1639 mmc_release_bus(dev, dev); 1640 1641 bus_generic_attach(dev); 1642} 1643 1644static int 1645mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result) 1646{ 1647 struct mmc_ivars *ivar = device_get_ivars(child); 1648 1649 switch (which) { 1650 default: 1651 return (EINVAL); 1652 case MMC_IVAR_SPEC_VERS: 1653 *result = ivar->csd.spec_vers; 1654 break; 1655 case MMC_IVAR_DSR_IMP: 1656 *result = ivar->csd.dsr_imp; 1657 break; 1658 case MMC_IVAR_MEDIA_SIZE: 1659 *result = ivar->sec_count; 1660 break; 1661 case MMC_IVAR_RCA: 1662 *result = ivar->rca; 1663 break; 1664 case MMC_IVAR_SECTOR_SIZE: 1665 *result = MMC_SECTOR_SIZE; 1666 break; 1667 case MMC_IVAR_TRAN_SPEED: 1668 *result = mmcbr_get_clock(bus); 1669 break; 1670 case MMC_IVAR_READ_ONLY: 1671 *result = ivar->read_only; 1672 break; 1673 case MMC_IVAR_HIGH_CAP: 1674 *result = ivar->high_cap; 1675 break; 1676 case MMC_IVAR_CARD_TYPE: 1677 *result = ivar->mode; 1678 break; 1679 case MMC_IVAR_BUS_WIDTH: 1680 *result = ivar->bus_width; 1681 break; 1682 case MMC_IVAR_ERASE_SECTOR: 1683 *result = ivar->erase_sector; 1684 break; 1685 case MMC_IVAR_MAX_DATA: 1686 *result = mmcbr_get_max_data(bus); 1687 break; 1688 case MMC_IVAR_CARD_ID_STRING: 1689 *(char **)result = ivar->card_id_string; 1690 break; 1691 case MMC_IVAR_CARD_SN_STRING: 1692 *(char **)result = ivar->card_sn_string; 1693 break; 1694 } 1695 return (0); 1696} 1697 1698static int 1699mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value) 1700{ 1701 1702 /* 1703 * None are writable ATM 1704 */ 1705 return (EINVAL); 1706} 1707 1708static void 1709mmc_delayed_attach(void *xsc) 1710{ 1711 struct mmc_softc *sc = xsc; 1712 1713 mmc_scan(sc); 1714 config_intrhook_disestablish(&sc->config_intrhook); 1715} 1716 1717static int 1718mmc_child_location_str(device_t dev, device_t child, char *buf, 1719 size_t buflen) 1720{ 1721 1722 snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child)); 1723 return (0); 1724} 1725 1726static device_method_t mmc_methods[] = { 1727 /* device_if */ 1728 DEVMETHOD(device_probe, mmc_probe), 1729 DEVMETHOD(device_attach, mmc_attach), 1730 DEVMETHOD(device_detach, mmc_detach), 1731 DEVMETHOD(device_suspend, mmc_suspend), 1732 DEVMETHOD(device_resume, mmc_resume), 1733 1734 /* Bus interface */ 1735 DEVMETHOD(bus_read_ivar, mmc_read_ivar), 1736 DEVMETHOD(bus_write_ivar, mmc_write_ivar), 1737 DEVMETHOD(bus_child_location_str, mmc_child_location_str), 1738 1739 /* MMC Bus interface */ 1740 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request), 1741 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus), 1742 DEVMETHOD(mmcbus_release_bus, mmc_release_bus), 1743 1744 DEVMETHOD_END 1745}; 1746 1747driver_t mmc_driver = { 1748 "mmc", 1749 mmc_methods, 1750 sizeof(struct mmc_softc), 1751}; 1752devclass_t mmc_devclass; 1753 1754MODULE_VERSION(mmc, MMC_VERSION); 1755