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 * $FreeBSD: src/sys/dev/mmc/mmc.c,v 1.38 2009/08/20 19:17:53 jhb Exp $ 53 */ 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/malloc.h> 59 #include <sys/lock.h> 60 #include <sys/module.h> 61 #include <sys/spinlock.h> 62 #include <sys/bus.h> 63 #include <sys/endian.h> 64 #include <sys/sysctl.h> 65 66 #include <bus/mmc/mmcreg.h> 67 #include <bus/mmc/mmcbrvar.h> 68 #include <bus/mmc/mmcvar.h> 69 #include "mmcbr_if.h" 70 #include "mmcbus_if.h" 71 72 struct mmc_softc { 73 device_t dev; 74 struct lock sc_lock; 75 struct intr_config_hook config_intrhook; 76 device_t owner; 77 uint32_t last_rca; 78 }; 79 80 /* 81 * Per-card data 82 */ 83 struct mmc_ivars { 84 uint32_t raw_cid[4]; /* Raw bits of the CID */ 85 uint32_t raw_csd[4]; /* Raw bits of the CSD */ 86 uint32_t raw_scr[2]; /* Raw bits of the SCR */ 87 uint8_t raw_ext_csd[512]; /* Raw bits of the EXT_CSD */ 88 uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */ 89 uint16_t rca; 90 enum mmc_card_mode mode; 91 struct mmc_cid cid; /* cid decoded */ 92 struct mmc_csd csd; /* csd decoded */ 93 struct mmc_scr scr; /* scr decoded */ 94 struct mmc_sd_status sd_status; /* SD_STATUS decoded */ 95 u_char read_only; /* True when the device is read-only */ 96 u_char bus_width; /* Bus width to use */ 97 u_char timing; /* Bus timing support */ 98 u_char high_cap; /* High Capacity card (block addressed) */ 99 uint32_t sec_count; /* Card capacity in 512byte blocks */ 100 uint32_t tran_speed; /* Max speed in normal mode */ 101 uint32_t hs_tran_speed; /* Max speed in high speed mode */ 102 uint32_t erase_sector; /* Card native erase sector size */ 103 }; 104 105 #define CMD_RETRIES 3 106 107 SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver"); 108 109 static int mmc_debug; 110 SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level"); 111 112 /* bus entry points */ 113 static int mmc_probe(device_t dev); 114 static int mmc_attach(device_t dev); 115 static int mmc_detach(device_t dev); 116 static int mmc_suspend(device_t dev); 117 static int mmc_resume(device_t dev); 118 119 #define MMC_LOCK(_sc) lockmgr(&(_sc)->sc_lock, LK_EXCLUSIVE) 120 #define MMC_UNLOCK(_sc) lockmgr(&(_sc)->sc_lock, LK_RELEASE) 121 #define MMC_LOCK_INIT(_sc) lockinit(&(_sc)->sc_lock, "mmc", 0, LK_CANRECURSE) 122 #define MMC_LOCK_DESTROY(_sc) lockuninit(&(_sc)->sc_lock); 123 #define MMC_ASSERT_LOCKED(_sc) KKASSERT(lockstatus(&(_sc)->sc_lock, curthread) != 0); 124 #define MMC_ASSERT_UNLOCKED(_sc) KKASSERT(lockstatus(&(_sc)->sc_lock, curthread) == 0); 125 126 static int mmc_calculate_clock(struct mmc_softc *sc); 127 static void mmc_delayed_attach(void *); 128 static void mmc_power_down(struct mmc_softc *sc); 129 static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, 130 int retries); 131 static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 132 uint32_t arg, uint32_t flags, uint32_t *resp, int retries); 133 static int mmc_select_card(struct mmc_softc *sc, uint16_t rca); 134 static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width); 135 static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr); 136 static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr); 137 static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd); 138 static void mmc_scan(struct mmc_softc *sc); 139 static int mmc_delete_cards(struct mmc_softc *sc); 140 141 static void 142 mmc_ms_delay(int ms) 143 { 144 DELAY(1000 * ms); /* XXX BAD */ 145 } 146 147 static int 148 mmc_probe(device_t dev) 149 { 150 151 device_set_desc(dev, "MMC/SD bus"); 152 return (0); 153 } 154 155 static int 156 mmc_attach(device_t dev) 157 { 158 struct mmc_softc *sc; 159 160 sc = device_get_softc(dev); 161 sc->dev = dev; 162 MMC_LOCK_INIT(sc); 163 164 /* We'll probe and attach our children later, but before / mount */ 165 sc->config_intrhook.ich_func = mmc_delayed_attach; 166 sc->config_intrhook.ich_arg = sc; 167 sc->config_intrhook.ich_desc = "mmc"; 168 if (config_intrhook_establish(&sc->config_intrhook) != 0) 169 device_printf(dev, "config_intrhook_establish failed\n"); 170 return (0); 171 } 172 173 static int 174 mmc_detach(device_t dev) 175 { 176 struct mmc_softc *sc = device_get_softc(dev); 177 int err; 178 179 if ((err = mmc_delete_cards(sc)) != 0) 180 return (err); 181 mmc_power_down(sc); 182 MMC_LOCK_DESTROY(sc); 183 184 return (0); 185 } 186 187 static int 188 mmc_suspend(device_t dev) 189 { 190 struct mmc_softc *sc = device_get_softc(dev); 191 int err; 192 193 err = bus_generic_suspend(dev); 194 if (err) 195 return (err); 196 mmc_power_down(sc); 197 return (0); 198 } 199 200 static int 201 mmc_resume(device_t dev) 202 { 203 struct mmc_softc *sc = device_get_softc(dev); 204 205 mmc_scan(sc); 206 return (bus_generic_resume(dev)); 207 } 208 209 static int 210 mmc_acquire_bus(device_t busdev, device_t dev) 211 { 212 struct mmc_softc *sc; 213 struct mmc_ivars *ivar; 214 int err; 215 int rca; 216 217 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev); 218 if (err) 219 return (err); 220 sc = device_get_softc(busdev); 221 MMC_LOCK(sc); 222 if (sc->owner) 223 panic("mmc: host bridge didn't seralize us."); 224 sc->owner = dev; 225 MMC_UNLOCK(sc); 226 227 if (busdev != dev) { 228 /* 229 * Keep track of the last rca that we've selected. If 230 * we're asked to do it again, don't. We never 231 * unselect unless the bus code itself wants the mmc 232 * bus, and constantly reselecting causes problems. 233 */ 234 rca = mmc_get_rca(dev); 235 if (sc->last_rca != rca) { 236 mmc_select_card(sc, rca); 237 sc->last_rca = rca; 238 /* Prepare bus width for the new card. */ 239 ivar = device_get_ivars(dev); 240 if (bootverbose || mmc_debug) { 241 device_printf(busdev, 242 "setting bus width to %d bits\n", 243 (ivar->bus_width == bus_width_4) ? 4 : 244 (ivar->bus_width == bus_width_8) ? 8 : 1); 245 } 246 mmc_set_card_bus_width(sc, rca, ivar->bus_width); 247 mmcbr_set_bus_width(busdev, ivar->bus_width); 248 mmcbr_update_ios(busdev); 249 } 250 } else { 251 /* 252 * If there's a card selected, stand down. 253 */ 254 if (sc->last_rca != 0) { 255 mmc_select_card(sc, 0); 256 sc->last_rca = 0; 257 } 258 } 259 260 return (0); 261 } 262 263 static int 264 mmc_release_bus(device_t busdev, device_t dev) 265 { 266 struct mmc_softc *sc; 267 int err; 268 269 sc = device_get_softc(busdev); 270 271 MMC_LOCK(sc); 272 if (!sc->owner) 273 panic("mmc: releasing unowned bus."); 274 if (sc->owner != dev) 275 panic("mmc: you don't own the bus. game over."); 276 MMC_UNLOCK(sc); 277 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev); 278 if (err) 279 return (err); 280 MMC_LOCK(sc); 281 sc->owner = NULL; 282 MMC_UNLOCK(sc); 283 return (0); 284 } 285 286 static uint32_t 287 mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr) 288 { 289 290 return (ocr & MMC_OCR_VOLTAGE); 291 } 292 293 static int 294 mmc_highest_voltage(uint32_t ocr) 295 { 296 int i; 297 298 for (i = 30; i >= 0; i--) 299 if (ocr & (1 << i)) 300 return (i); 301 return (-1); 302 } 303 304 static void 305 mmc_wakeup(struct mmc_request *req) 306 { 307 struct mmc_softc *sc; 308 309 sc = (struct mmc_softc *)req->done_data; 310 MMC_LOCK(sc); 311 req->flags |= MMC_REQ_DONE; 312 MMC_UNLOCK(sc); 313 wakeup(req); 314 } 315 316 static int 317 mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req) 318 { 319 320 req->done = mmc_wakeup; 321 req->done_data = sc; 322 if (mmc_debug > 1) { 323 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x", 324 req->cmd->opcode, req->cmd->arg, req->cmd->flags); 325 if (req->cmd->data) { 326 kprintf(" data %d\n", (int)req->cmd->data->len); 327 } else 328 kprintf("\n"); 329 } 330 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req); 331 MMC_LOCK(sc); 332 while ((req->flags & MMC_REQ_DONE) == 0) 333 lksleep(req, &sc->sc_lock, 0, "mmcreq", 0); 334 MMC_UNLOCK(sc); 335 if (mmc_debug > 2 || (mmc_debug > 1 && req->cmd->error)) 336 device_printf(sc->dev, "RESULT: %d\n", req->cmd->error); 337 return (0); 338 } 339 340 static int 341 mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req) 342 { 343 struct mmc_softc *sc = device_get_softc(brdev); 344 345 return (mmc_wait_for_req(sc, req)); 346 } 347 348 static int 349 mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries) 350 { 351 struct mmc_request mreq; 352 353 memset(&mreq, 0, sizeof(mreq)); 354 memset(cmd->resp, 0, sizeof(cmd->resp)); 355 cmd->retries = retries; 356 mreq.cmd = cmd; 357 mmc_wait_for_req(sc, &mreq); 358 return (cmd->error); 359 } 360 361 static int 362 mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca, 363 struct mmc_command *cmd, int retries) 364 { 365 struct mmc_command appcmd; 366 int err = MMC_ERR_NONE, i; 367 368 for (i = 0; i <= retries; i++) { 369 appcmd.opcode = MMC_APP_CMD; 370 appcmd.arg = rca << 16; 371 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 372 appcmd.data = NULL; 373 mmc_wait_for_cmd(sc, &appcmd, 0); 374 err = appcmd.error; 375 if (err != MMC_ERR_NONE) 376 continue; 377 if (!(appcmd.resp[0] & R1_APP_CMD)) 378 return MMC_ERR_FAILED; 379 mmc_wait_for_cmd(sc, cmd, 0); 380 err = cmd->error; 381 if (err == MMC_ERR_NONE) 382 break; 383 } 384 return (err); 385 } 386 387 static int 388 mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 389 uint32_t arg, uint32_t flags, uint32_t *resp, int retries) 390 { 391 struct mmc_command cmd; 392 int err; 393 394 memset(&cmd, 0, sizeof(cmd)); 395 cmd.opcode = opcode; 396 cmd.arg = arg; 397 cmd.flags = flags; 398 cmd.data = NULL; 399 err = mmc_wait_for_cmd(sc, &cmd, retries); 400 if (err) 401 return (err); 402 if (cmd.error) 403 return (cmd.error); 404 if (resp) { 405 if (flags & MMC_RSP_136) 406 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t)); 407 else 408 *resp = cmd.resp[0]; 409 } 410 return (0); 411 } 412 413 static void 414 mmc_idle_cards(struct mmc_softc *sc) 415 { 416 device_t dev; 417 struct mmc_command cmd; 418 419 dev = sc->dev; 420 mmcbr_set_chip_select(dev, cs_high); 421 mmcbr_update_ios(dev); 422 mmc_ms_delay(1); 423 424 memset(&cmd, 0, sizeof(cmd)); 425 cmd.opcode = MMC_GO_IDLE_STATE; 426 cmd.arg = 0; 427 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC; 428 cmd.data = NULL; 429 mmc_wait_for_cmd(sc, &cmd, 0); 430 mmc_ms_delay(1); 431 432 mmcbr_set_chip_select(dev, cs_dontcare); 433 mmcbr_update_ios(dev); 434 mmc_ms_delay(1); 435 } 436 437 static int 438 mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 439 { 440 struct mmc_command cmd; 441 int err = MMC_ERR_NONE, i; 442 443 memset(&cmd, 0, sizeof(cmd)); 444 cmd.opcode = ACMD_SD_SEND_OP_COND; 445 cmd.arg = ocr; 446 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 447 cmd.data = NULL; 448 449 for (i = 0; i < 100; i++) { 450 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES); 451 if (err != MMC_ERR_NONE) 452 break; 453 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 454 (ocr & MMC_OCR_VOLTAGE) == 0) 455 break; 456 err = MMC_ERR_TIMEOUT; 457 mmc_ms_delay(10); 458 } 459 if (rocr && err == MMC_ERR_NONE) 460 *rocr = cmd.resp[0]; 461 return (err); 462 } 463 464 static int 465 mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 466 { 467 struct mmc_command cmd; 468 int err = MMC_ERR_NONE, i; 469 470 memset(&cmd, 0, sizeof(cmd)); 471 cmd.opcode = MMC_SEND_OP_COND; 472 cmd.arg = ocr; 473 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 474 cmd.data = NULL; 475 476 for (i = 0; i < 100; i++) { 477 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 478 if (err != MMC_ERR_NONE) 479 break; 480 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 481 (ocr & MMC_OCR_VOLTAGE) == 0) 482 break; 483 err = MMC_ERR_TIMEOUT; 484 mmc_ms_delay(10); 485 } 486 if (rocr && err == MMC_ERR_NONE) 487 *rocr = cmd.resp[0]; 488 return (err); 489 } 490 491 static int 492 mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs) 493 { 494 struct mmc_command cmd; 495 int err; 496 497 memset(&cmd, 0, sizeof(cmd)); 498 cmd.opcode = SD_SEND_IF_COND; 499 cmd.arg = (vhs << 8) + 0xAA; 500 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR; 501 cmd.data = NULL; 502 503 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 504 return (err); 505 } 506 507 static void 508 mmc_power_up(struct mmc_softc *sc) 509 { 510 device_t dev; 511 512 dev = sc->dev; 513 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev))); 514 mmcbr_set_bus_mode(dev, opendrain); 515 mmcbr_set_chip_select(dev, cs_dontcare); 516 mmcbr_set_bus_width(dev, bus_width_1); 517 mmcbr_set_power_mode(dev, power_up); 518 mmcbr_set_clock(dev, 0); 519 mmcbr_update_ios(dev); 520 mmc_ms_delay(1); 521 522 mmcbr_set_clock(dev, mmcbr_get_f_min(sc->dev)); 523 mmcbr_set_timing(dev, bus_timing_normal); 524 mmcbr_set_power_mode(dev, power_on); 525 mmcbr_update_ios(dev); 526 mmc_ms_delay(2); 527 } 528 529 static void 530 mmc_power_down(struct mmc_softc *sc) 531 { 532 device_t dev = sc->dev; 533 534 mmcbr_set_bus_mode(dev, opendrain); 535 mmcbr_set_chip_select(dev, cs_dontcare); 536 mmcbr_set_bus_width(dev, bus_width_1); 537 mmcbr_set_power_mode(dev, power_off); 538 mmcbr_set_clock(dev, 0); 539 mmcbr_set_timing(dev, bus_timing_normal); 540 mmcbr_update_ios(dev); 541 } 542 543 static int 544 mmc_select_card(struct mmc_softc *sc, uint16_t rca) 545 { 546 int flags; 547 548 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC; 549 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16, 550 flags, NULL, CMD_RETRIES)); 551 } 552 553 static int 554 mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value) 555 { 556 struct mmc_command cmd; 557 int err; 558 559 cmd.opcode = MMC_SWITCH_FUNC; 560 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) | 561 (index << 16) | 562 (value << 8) | 563 set; 564 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 565 cmd.data = NULL; 566 err = mmc_wait_for_cmd(sc, &cmd, 0); 567 return (err); 568 } 569 570 static int 571 mmc_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(struct mmc_command)); 579 memset(&data, 0, sizeof(struct mmc_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, &cmd, CMD_RETRIES); 595 return (err); 596 } 597 598 static int 599 mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width) 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(struct mmc_command)); 607 cmd.opcode = ACMD_SET_BUS_WIDTH; 608 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 609 switch (width) { 610 case bus_width_1: 611 cmd.arg = SD_BUS_WIDTH_1; 612 break; 613 case bus_width_4: 614 cmd.arg = SD_BUS_WIDTH_4; 615 break; 616 default: 617 return (MMC_ERR_INVALID); 618 } 619 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 620 } else { 621 switch (width) { 622 case bus_width_1: 623 value = EXT_CSD_BUS_WIDTH_1; 624 break; 625 case bus_width_4: 626 value = EXT_CSD_BUS_WIDTH_4; 627 break; 628 case bus_width_8: 629 value = EXT_CSD_BUS_WIDTH_8; 630 break; 631 default: 632 return (MMC_ERR_INVALID); 633 } 634 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 635 value); 636 } 637 return (err); 638 } 639 640 static int 641 mmc_set_timing(struct mmc_softc *sc, int timing) 642 { 643 int err; 644 uint8_t value; 645 u_char switch_res[64]; 646 647 switch (timing) { 648 case bus_timing_normal: 649 value = 0; 650 break; 651 case bus_timing_hs: 652 value = 1; 653 break; 654 default: 655 return (MMC_ERR_INVALID); 656 } 657 if (mmcbr_get_mode(sc->dev) == mode_sd) 658 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, 659 value, switch_res); 660 else 661 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, 662 EXT_CSD_HS_TIMING, value); 663 return (err); 664 } 665 666 static int 667 mmc_test_bus_width(struct mmc_softc *sc) 668 { 669 struct mmc_command cmd; 670 struct mmc_data data; 671 int err; 672 uint8_t buf[8]; 673 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 674 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 675 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, }; 676 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, }; 677 678 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) { 679 mmcbr_set_bus_width(sc->dev, bus_width_8); 680 mmcbr_update_ios(sc->dev); 681 682 cmd.opcode = MMC_BUSTEST_W; 683 cmd.arg = 0; 684 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 685 cmd.data = &data; 686 687 data.data = p8; 688 data.len = 8; 689 data.flags = MMC_DATA_WRITE; 690 mmc_wait_for_cmd(sc, &cmd, 0); 691 692 cmd.opcode = MMC_BUSTEST_R; 693 cmd.arg = 0; 694 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 695 cmd.data = &data; 696 697 data.data = buf; 698 data.len = 8; 699 data.flags = MMC_DATA_READ; 700 err = mmc_wait_for_cmd(sc, &cmd, 0); 701 702 mmcbr_set_bus_width(sc->dev, bus_width_1); 703 mmcbr_update_ios(sc->dev); 704 705 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0) 706 return (bus_width_8); 707 } 708 709 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) { 710 mmcbr_set_bus_width(sc->dev, bus_width_4); 711 mmcbr_update_ios(sc->dev); 712 713 cmd.opcode = MMC_BUSTEST_W; 714 cmd.arg = 0; 715 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 716 cmd.data = &data; 717 718 data.data = p4; 719 data.len = 4; 720 data.flags = MMC_DATA_WRITE; 721 mmc_wait_for_cmd(sc, &cmd, 0); 722 723 cmd.opcode = MMC_BUSTEST_R; 724 cmd.arg = 0; 725 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 726 cmd.data = &data; 727 728 data.data = buf; 729 data.len = 4; 730 data.flags = MMC_DATA_READ; 731 err = mmc_wait_for_cmd(sc, &cmd, 0); 732 733 mmcbr_set_bus_width(sc->dev, bus_width_1); 734 mmcbr_update_ios(sc->dev); 735 736 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0) 737 return (bus_width_4); 738 } 739 return (bus_width_1); 740 } 741 742 static uint32_t 743 mmc_get_bits(uint32_t *bits, int bit_len, int start, int size) 744 { 745 const int i = (bit_len / 32) - (start / 32) - 1; 746 const int shift = start & 31; 747 uint32_t retval = bits[i] >> shift; 748 if (size + shift > 32) 749 retval |= bits[i - 1] << (32 - shift); 750 return (retval & ((1 << size) - 1)); 751 } 752 753 static void 754 mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid) 755 { 756 int i; 757 758 /* There's no version info, so we take it on faith */ 759 memset(cid, 0, sizeof(*cid)); 760 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 761 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16); 762 for (i = 0; i < 5; i++) 763 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 764 cid->pnm[5] = 0; 765 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8); 766 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32); 767 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000; 768 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4); 769 } 770 771 static void 772 mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid) 773 { 774 int i; 775 776 /* There's no version info, so we take it on faith */ 777 memset(cid, 0, sizeof(*cid)); 778 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 779 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8); 780 for (i = 0; i < 6; i++) 781 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 782 cid->pnm[6] = 0; 783 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8); 784 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32); 785 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4); 786 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997; 787 } 788 789 static const int exp[8] = { 790 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 791 }; 792 static const int mant[16] = { 793 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 794 }; 795 static const int cur_min[8] = { 796 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000 797 }; 798 static const int cur_max[8] = { 799 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000 800 }; 801 802 static void 803 mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd) 804 { 805 int v; 806 int m; 807 int e; 808 809 memset(csd, 0, sizeof(*csd)); 810 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2); 811 if (v == 0) { 812 m = mmc_get_bits(raw_csd, 128, 115, 4); 813 e = mmc_get_bits(raw_csd, 128, 112, 3); 814 csd->tacc = exp[e] * mant[m] + 9 / 10; 815 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 816 m = mmc_get_bits(raw_csd, 128, 99, 4); 817 e = mmc_get_bits(raw_csd, 128, 96, 3); 818 csd->tran_speed = exp[e] * 10000 * mant[m]; 819 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 820 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 821 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 822 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 823 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 824 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 825 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 826 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 827 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 828 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 829 m = mmc_get_bits(raw_csd, 128, 62, 12); 830 e = mmc_get_bits(raw_csd, 128, 47, 3); 831 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 832 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 833 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 834 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 835 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 836 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 837 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 838 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 839 } else if (v == 1) { 840 m = mmc_get_bits(raw_csd, 128, 115, 4); 841 e = mmc_get_bits(raw_csd, 128, 112, 3); 842 csd->tacc = exp[e] * mant[m] + 9 / 10; 843 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 844 m = mmc_get_bits(raw_csd, 128, 99, 4); 845 e = mmc_get_bits(raw_csd, 128, 96, 3); 846 csd->tran_speed = exp[e] * 10000 * mant[m]; 847 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 848 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 849 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 850 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 851 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 852 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 853 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) * 854 512 * 1024; 855 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 856 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 857 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 858 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 859 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 860 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 861 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 862 } else 863 panic("unknown SD CSD version"); 864 } 865 866 static void 867 mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd) 868 { 869 int m; 870 int e; 871 872 memset(csd, 0, sizeof(*csd)); 873 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2); 874 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4); 875 m = mmc_get_bits(raw_csd, 128, 115, 4); 876 e = mmc_get_bits(raw_csd, 128, 112, 3); 877 csd->tacc = exp[e] * mant[m] + 9 / 10; 878 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 879 m = mmc_get_bits(raw_csd, 128, 99, 4); 880 e = mmc_get_bits(raw_csd, 128, 96, 3); 881 csd->tran_speed = exp[e] * 10000 * mant[m]; 882 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 883 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 884 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 885 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 886 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 887 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 888 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 889 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 890 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 891 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 892 m = mmc_get_bits(raw_csd, 128, 62, 12); 893 e = mmc_get_bits(raw_csd, 128, 47, 3); 894 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 895 csd->erase_blk_en = 0; 896 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) * 897 (mmc_get_bits(raw_csd, 128, 37, 5) + 1); 898 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5); 899 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 900 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 901 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 902 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 903 } 904 905 static void 906 mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr) 907 { 908 unsigned int scr_struct; 909 910 memset(scr, 0, sizeof(*scr)); 911 912 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4); 913 if (scr_struct != 0) { 914 kprintf("Unrecognised SCR structure version %d\n", 915 scr_struct); 916 return; 917 } 918 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4); 919 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4); 920 } 921 922 static void 923 mmc_app_decode_sd_status(uint32_t *raw_sd_status, 924 struct mmc_sd_status *sd_status) 925 { 926 927 memset(sd_status, 0, sizeof(*sd_status)); 928 929 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2); 930 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1); 931 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16); 932 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12); 933 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8); 934 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8); 935 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4); 936 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16); 937 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6); 938 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2); 939 } 940 941 static int 942 mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid) 943 { 944 struct mmc_command cmd; 945 int err; 946 947 cmd.opcode = MMC_ALL_SEND_CID; 948 cmd.arg = 0; 949 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 950 cmd.data = NULL; 951 err = mmc_wait_for_cmd(sc, &cmd, 0); 952 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t)); 953 return (err); 954 } 955 956 static int 957 mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcid) 958 { 959 struct mmc_command cmd; 960 int err; 961 962 cmd.opcode = MMC_SEND_CSD; 963 cmd.arg = rca << 16; 964 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 965 cmd.data = NULL; 966 err = mmc_wait_for_cmd(sc, &cmd, 0); 967 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t)); 968 return (err); 969 } 970 971 static int 972 mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr) 973 { 974 int err; 975 struct mmc_command cmd; 976 struct mmc_data data; 977 978 memset(&cmd, 0, sizeof(struct mmc_command)); 979 memset(&data, 0, sizeof(struct mmc_data)); 980 981 memset(rawscr, 0, 8); 982 cmd.opcode = ACMD_SEND_SCR; 983 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 984 cmd.arg = 0; 985 cmd.data = &data; 986 987 data.data = rawscr; 988 data.len = 8; 989 data.flags = MMC_DATA_READ; 990 991 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 992 rawscr[0] = be32toh(rawscr[0]); 993 rawscr[1] = be32toh(rawscr[1]); 994 return (err); 995 } 996 997 static int 998 mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd) 999 { 1000 int err; 1001 struct mmc_command cmd; 1002 struct mmc_data data; 1003 1004 memset(&cmd, 0, sizeof(struct mmc_command)); 1005 memset(&data, 0, sizeof(struct mmc_data)); 1006 1007 memset(rawextcsd, 0, 512); 1008 cmd.opcode = MMC_SEND_EXT_CSD; 1009 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1010 cmd.arg = 0; 1011 cmd.data = &data; 1012 1013 data.data = rawextcsd; 1014 data.len = 512; 1015 data.flags = MMC_DATA_READ; 1016 1017 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1018 return (err); 1019 } 1020 1021 static int 1022 mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus) 1023 { 1024 int err, i; 1025 struct mmc_command cmd; 1026 struct mmc_data data; 1027 1028 memset(&cmd, 0, sizeof(struct mmc_command)); 1029 memset(&data, 0, sizeof(struct mmc_data)); 1030 1031 memset(rawsdstatus, 0, 64); 1032 cmd.opcode = ACMD_SD_STATUS; 1033 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1034 cmd.arg = 0; 1035 cmd.data = &data; 1036 1037 data.data = rawsdstatus; 1038 data.len = 64; 1039 data.flags = MMC_DATA_READ; 1040 1041 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 1042 for (i = 0; i < 16; i++) 1043 rawsdstatus[i] = be32toh(rawsdstatus[i]); 1044 return (err); 1045 } 1046 1047 static int 1048 mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp) 1049 { 1050 struct mmc_command cmd; 1051 int err; 1052 1053 cmd.opcode = MMC_SET_RELATIVE_ADDR; 1054 cmd.arg = resp << 16; 1055 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1056 cmd.data = NULL; 1057 err = mmc_wait_for_cmd(sc, &cmd, 0); 1058 return (err); 1059 } 1060 1061 static int 1062 mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp) 1063 { 1064 struct mmc_command cmd; 1065 int err; 1066 1067 cmd.opcode = SD_SEND_RELATIVE_ADDR; 1068 cmd.arg = 0; 1069 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1070 cmd.data = NULL; 1071 err = mmc_wait_for_cmd(sc, &cmd, 0); 1072 *resp = cmd.resp[0]; 1073 return (err); 1074 } 1075 1076 static void 1077 mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard) 1078 { 1079 device_printf(dev, "Card at relative address %d%s:\n", 1080 ivar->rca, newcard ? " added" : ""); 1081 device_printf(dev, " card: %s%s (0x%x/0x%x/\"%s\" rev %d.%d " 1082 "m/d %02d.%04d s/n %08x)\n", 1083 ivar->mode == mode_sd ? "SD" : "MMC", 1084 ivar->high_cap ? " High Capacity" : "", 1085 ivar->cid.mid, ivar->cid.oid, 1086 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f, 1087 ivar->cid.mdt_month, ivar->cid.mdt_year, ivar->cid.psn); 1088 device_printf(dev, " bus: %ubit, %uMHz%s\n", 1089 (ivar->bus_width == bus_width_1 ? 1 : 1090 (ivar->bus_width == bus_width_4 ? 4 : 8)), 1091 (ivar->timing == bus_timing_hs ? 1092 ivar->hs_tran_speed : ivar->tran_speed) / 1000000, 1093 ivar->timing == bus_timing_hs ? ", high speed timing" : ""); 1094 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n", 1095 ivar->sec_count, ivar->erase_sector, 1096 ivar->read_only ? ", read-only" : ""); 1097 } 1098 1099 static void 1100 mmc_discover_cards(struct mmc_softc *sc) 1101 { 1102 struct mmc_ivars *ivar = NULL; 1103 device_t *devlist; 1104 int err, i, devcount, newcard; 1105 uint32_t raw_cid[4]; 1106 uint32_t resp, sec_count; 1107 device_t child; 1108 uint16_t rca = 2; 1109 u_char switch_res[64]; 1110 1111 if (bootverbose || mmc_debug) 1112 device_printf(sc->dev, "Probing cards\n"); 1113 while (1) { 1114 err = mmc_all_send_cid(sc, raw_cid); 1115 if (err == MMC_ERR_TIMEOUT) 1116 break; 1117 if (err != MMC_ERR_NONE) { 1118 device_printf(sc->dev, "Error reading CID %d\n", err); 1119 break; 1120 } 1121 newcard = 1; 1122 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1123 return; 1124 for (i = 0; i < devcount; i++) { 1125 ivar = device_get_ivars(devlist[i]); 1126 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) { 1127 newcard = 0; 1128 break; 1129 } 1130 } 1131 kfree(devlist, M_TEMP); 1132 if (bootverbose || mmc_debug) { 1133 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n", 1134 newcard ? "New c" : "C", 1135 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]); 1136 } 1137 if (newcard) { 1138 ivar = kmalloc(sizeof(struct mmc_ivars), M_DEVBUF, 1139 M_WAITOK | M_ZERO); 1140 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid)); 1141 } 1142 if (mmcbr_get_ro(sc->dev)) 1143 ivar->read_only = 1; 1144 ivar->bus_width = bus_width_1; 1145 ivar->timing = bus_timing_normal; 1146 ivar->mode = mmcbr_get_mode(sc->dev); 1147 if (ivar->mode == mode_sd) { 1148 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid); 1149 mmc_send_relative_addr(sc, &resp); 1150 ivar->rca = resp >> 16; 1151 /* Get card CSD. */ 1152 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1153 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd); 1154 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1155 if (ivar->csd.csd_structure > 0) 1156 ivar->high_cap = 1; 1157 ivar->tran_speed = ivar->csd.tran_speed; 1158 ivar->erase_sector = ivar->csd.erase_sector * 1159 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1160 /* Get card SCR. Card must be selected to fetch it. */ 1161 mmc_select_card(sc, ivar->rca); 1162 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr); 1163 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr); 1164 /* Get card switch capabilities (command class 10). */ 1165 if ((ivar->scr.sda_vsn >= 1) && 1166 (ivar->csd.ccc & (1<<10))) { 1167 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK, 1168 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, 1169 switch_res); 1170 if (switch_res[13] & 2) { 1171 ivar->timing = bus_timing_hs; 1172 ivar->hs_tran_speed = SD_MAX_HS; 1173 } 1174 } 1175 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status); 1176 mmc_app_decode_sd_status(ivar->raw_sd_status, 1177 &ivar->sd_status); 1178 if (ivar->sd_status.au_size != 0) { 1179 ivar->erase_sector = 1180 16 << ivar->sd_status.au_size; 1181 } 1182 mmc_select_card(sc, 0); 1183 /* Find max supported bus width. */ 1184 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) && 1185 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) 1186 ivar->bus_width = bus_width_4; 1187 if (bootverbose || mmc_debug) 1188 mmc_log_card(sc->dev, ivar, newcard); 1189 if (newcard) { 1190 /* Add device. */ 1191 child = device_add_child(sc->dev, NULL, -1); 1192 device_set_ivars(child, ivar); 1193 } 1194 return; 1195 } 1196 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid); 1197 ivar->rca = rca++; 1198 mmc_set_relative_addr(sc, ivar->rca); 1199 /* Get card CSD. */ 1200 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1201 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd); 1202 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1203 ivar->tran_speed = ivar->csd.tran_speed; 1204 ivar->erase_sector = ivar->csd.erase_sector * 1205 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1206 /* Only MMC >= 4.x cards support EXT_CSD. */ 1207 if (ivar->csd.spec_vers >= 4) { 1208 /* Card must be selected to fetch EXT_CSD. */ 1209 mmc_select_card(sc, ivar->rca); 1210 mmc_send_ext_csd(sc, ivar->raw_ext_csd); 1211 /* Handle extended capacity from EXT_CSD */ 1212 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] + 1213 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) + 1214 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) + 1215 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24); 1216 if (sec_count != 0) { 1217 ivar->sec_count = sec_count; 1218 ivar->high_cap = 1; 1219 } 1220 /* Get card speed in high speed mode. */ 1221 ivar->timing = bus_timing_hs; 1222 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1223 & EXT_CSD_CARD_TYPE_52) 1224 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS; 1225 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1226 & EXT_CSD_CARD_TYPE_26) 1227 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS; 1228 else 1229 ivar->hs_tran_speed = ivar->tran_speed; 1230 /* Find max supported bus width. */ 1231 ivar->bus_width = mmc_test_bus_width(sc); 1232 mmc_select_card(sc, 0); 1233 /* Handle HC erase sector size. */ 1234 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) { 1235 ivar->erase_sector = 1024 * 1236 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE]; 1237 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, 1238 EXT_CSD_ERASE_GRP_DEF, 1); 1239 } 1240 } else { 1241 ivar->bus_width = bus_width_1; 1242 ivar->timing = bus_timing_normal; 1243 } 1244 if (bootverbose || mmc_debug) 1245 mmc_log_card(sc->dev, ivar, newcard); 1246 if (newcard) { 1247 /* Add device. */ 1248 child = device_add_child(sc->dev, NULL, -1); 1249 device_set_ivars(child, ivar); 1250 } 1251 } 1252 } 1253 1254 static void 1255 mmc_rescan_cards(struct mmc_softc *sc) 1256 { 1257 struct mmc_ivars *ivar = NULL; 1258 device_t *devlist; 1259 int err, i, devcount; 1260 1261 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1262 return; 1263 for (i = 0; i < devcount; i++) { 1264 ivar = device_get_ivars(devlist[i]); 1265 if (mmc_select_card(sc, ivar->rca)) { 1266 if (bootverbose || mmc_debug) 1267 device_printf(sc->dev, "Card at relative address %d lost.\n", 1268 ivar->rca); 1269 device_delete_child(sc->dev, devlist[i]); 1270 kfree(ivar, M_DEVBUF); 1271 } 1272 } 1273 kfree(devlist, M_TEMP); 1274 mmc_select_card(sc, 0); 1275 } 1276 1277 static int 1278 mmc_delete_cards(struct mmc_softc *sc) 1279 { 1280 struct mmc_ivars *ivar; 1281 device_t *devlist; 1282 int err, i, devcount; 1283 1284 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1285 return (err); 1286 for (i = 0; i < devcount; i++) { 1287 ivar = device_get_ivars(devlist[i]); 1288 if (bootverbose || mmc_debug) 1289 device_printf(sc->dev, "Card at relative address %d deleted.\n", 1290 ivar->rca); 1291 device_delete_child(sc->dev, devlist[i]); 1292 kfree(ivar, M_DEVBUF); 1293 } 1294 kfree(devlist, M_TEMP); 1295 return (0); 1296 } 1297 1298 static void 1299 mmc_go_discovery(struct mmc_softc *sc) 1300 { 1301 uint32_t ocr; 1302 device_t dev; 1303 int err; 1304 1305 dev = sc->dev; 1306 if (mmcbr_get_power_mode(dev) != power_on) { 1307 /* 1308 * First, try SD modes 1309 */ 1310 mmcbr_set_mode(dev, mode_sd); 1311 mmc_power_up(sc); 1312 mmcbr_set_bus_mode(dev, pushpull); 1313 if (bootverbose || mmc_debug) 1314 device_printf(sc->dev, "Probing bus\n"); 1315 mmc_idle_cards(sc); 1316 err = mmc_send_if_cond(sc, 1); 1317 if ((bootverbose || mmc_debug) && err == 0) 1318 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n"); 1319 if (mmc_send_app_op_cond(sc, err ? 0 : MMC_OCR_CCS, &ocr) != 1320 MMC_ERR_NONE) { 1321 if (bootverbose || mmc_debug) 1322 device_printf(sc->dev, "SD probe: failed\n"); 1323 /* 1324 * Failed, try MMC 1325 */ 1326 mmcbr_set_mode(dev, mode_mmc); 1327 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) { 1328 if (bootverbose || mmc_debug) 1329 device_printf(sc->dev, "MMC probe: failed\n"); 1330 ocr = 0; /* Failed both, powerdown. */ 1331 } else if (bootverbose || mmc_debug) 1332 device_printf(sc->dev, 1333 "MMC probe: OK (OCR: 0x%08x)\n", ocr); 1334 } else if (bootverbose || mmc_debug) 1335 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr); 1336 1337 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr)); 1338 if (mmcbr_get_ocr(dev) != 0) 1339 mmc_idle_cards(sc); 1340 } else { 1341 mmcbr_set_bus_mode(dev, opendrain); 1342 mmcbr_set_clock(dev, mmcbr_get_f_min(dev)); 1343 mmcbr_update_ios(dev); 1344 /* XXX recompute vdd based on new cards? */ 1345 } 1346 /* 1347 * Make sure that we have a mutually agreeable voltage to at least 1348 * one card on the bus. 1349 */ 1350 if (bootverbose || mmc_debug) 1351 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev)); 1352 if (mmcbr_get_ocr(dev) == 0) { 1353 mmc_delete_cards(sc); 1354 mmc_power_down(sc); 1355 return; 1356 } 1357 /* 1358 * Reselect the cards after we've idled them above. 1359 */ 1360 if (mmcbr_get_mode(dev) == mode_sd) { 1361 err = mmc_send_if_cond(sc, 1); 1362 mmc_send_app_op_cond(sc, 1363 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL); 1364 } else 1365 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL); 1366 mmc_discover_cards(sc); 1367 mmc_rescan_cards(sc); 1368 1369 mmcbr_set_bus_mode(dev, pushpull); 1370 mmcbr_update_ios(dev); 1371 mmc_calculate_clock(sc); 1372 bus_generic_attach(dev); 1373 /* mmc_update_children_sysctl(dev);*/ 1374 } 1375 1376 static int 1377 mmc_calculate_clock(struct mmc_softc *sc) 1378 { 1379 int max_dtr, max_hs_dtr, max_timing; 1380 int nkid, i, f_max; 1381 device_t *kids; 1382 struct mmc_ivars *ivar; 1383 1384 f_max = mmcbr_get_f_max(sc->dev); 1385 max_dtr = max_hs_dtr = f_max; 1386 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED)) 1387 max_timing = bus_timing_hs; 1388 else 1389 max_timing = bus_timing_normal; 1390 if (device_get_children(sc->dev, &kids, &nkid) != 0) 1391 panic("can't get children"); 1392 for (i = 0; i < nkid; i++) { 1393 ivar = device_get_ivars(kids[i]); 1394 if (ivar->timing < max_timing) 1395 max_timing = ivar->timing; 1396 if (ivar->tran_speed < max_dtr) 1397 max_dtr = ivar->tran_speed; 1398 if (ivar->hs_tran_speed < max_hs_dtr) 1399 max_hs_dtr = ivar->hs_tran_speed; 1400 } 1401 for (i = 0; i < nkid; i++) { 1402 ivar = device_get_ivars(kids[i]); 1403 if (ivar->timing == bus_timing_normal) 1404 continue; 1405 mmc_select_card(sc, ivar->rca); 1406 mmc_set_timing(sc, max_timing); 1407 } 1408 mmc_select_card(sc, 0); 1409 kfree(kids, M_TEMP); 1410 if (max_timing == bus_timing_hs) 1411 max_dtr = max_hs_dtr; 1412 if (bootverbose || mmc_debug) { 1413 device_printf(sc->dev, 1414 "setting transfer rate to %d.%03dMHz%s\n", 1415 max_dtr / 1000000, (max_dtr / 1000) % 1000, 1416 max_timing == bus_timing_hs ? " (high speed timing)" : ""); 1417 } 1418 mmcbr_set_timing(sc->dev, max_timing); 1419 mmcbr_set_clock(sc->dev, max_dtr); 1420 mmcbr_update_ios(sc->dev); 1421 return max_dtr; 1422 } 1423 1424 static void 1425 mmc_scan(struct mmc_softc *sc) 1426 { 1427 device_t dev = sc->dev; 1428 1429 mmc_acquire_bus(dev, dev); 1430 mmc_go_discovery(sc); 1431 mmc_release_bus(dev, dev); 1432 } 1433 1434 static int 1435 mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result) 1436 { 1437 struct mmc_ivars *ivar = device_get_ivars(child); 1438 1439 switch (which) { 1440 default: 1441 return (EINVAL); 1442 case MMC_IVAR_DSR_IMP: 1443 *(int *)result = ivar->csd.dsr_imp; 1444 break; 1445 case MMC_IVAR_MEDIA_SIZE: 1446 *(off_t *)result = ivar->sec_count; 1447 break; 1448 case MMC_IVAR_RCA: 1449 *(int *)result = ivar->rca; 1450 break; 1451 case MMC_IVAR_SECTOR_SIZE: 1452 *(int *)result = MMC_SECTOR_SIZE; 1453 break; 1454 case MMC_IVAR_TRAN_SPEED: 1455 *(int *)result = mmcbr_get_clock(bus); 1456 break; 1457 case MMC_IVAR_READ_ONLY: 1458 *(int *)result = ivar->read_only; 1459 break; 1460 case MMC_IVAR_HIGH_CAP: 1461 *(int *)result = ivar->high_cap; 1462 break; 1463 case MMC_IVAR_CARD_TYPE: 1464 *(int *)result = ivar->mode; 1465 break; 1466 case MMC_IVAR_BUS_WIDTH: 1467 *(int *)result = ivar->bus_width; 1468 break; 1469 case MMC_IVAR_ERASE_SECTOR: 1470 *(int *)result = ivar->erase_sector; 1471 break; 1472 case MMC_IVAR_MAX_DATA: 1473 *(int *)result = mmcbr_get_max_data(bus); 1474 break; 1475 } 1476 return (0); 1477 } 1478 1479 static int 1480 mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value) 1481 { 1482 /* 1483 * None are writable ATM 1484 */ 1485 return (EINVAL); 1486 } 1487 1488 1489 static void 1490 mmc_delayed_attach(void *xsc) 1491 { 1492 struct mmc_softc *sc = xsc; 1493 1494 mmc_scan(sc); 1495 config_intrhook_disestablish(&sc->config_intrhook); 1496 } 1497 1498 static device_method_t mmc_methods[] = { 1499 /* device_if */ 1500 DEVMETHOD(device_probe, mmc_probe), 1501 DEVMETHOD(device_attach, mmc_attach), 1502 DEVMETHOD(device_detach, mmc_detach), 1503 DEVMETHOD(device_suspend, mmc_suspend), 1504 DEVMETHOD(device_resume, mmc_resume), 1505 1506 /* Bus interface */ 1507 DEVMETHOD(bus_read_ivar, mmc_read_ivar), 1508 DEVMETHOD(bus_write_ivar, mmc_write_ivar), 1509 1510 /* MMC Bus interface */ 1511 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request), 1512 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus), 1513 DEVMETHOD(mmcbus_release_bus, mmc_release_bus), 1514 1515 DEVMETHOD_END 1516 }; 1517 1518 static driver_t mmc_driver = { 1519 "mmc", 1520 mmc_methods, 1521 sizeof(struct mmc_softc), 1522 }; 1523 static devclass_t mmc_devclass; 1524 1525 1526 DRIVER_MODULE(mmc, sdhci, mmc_driver, mmc_devclass, NULL, NULL); 1527