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 if (config_intrhook_establish(&sc->config_intrhook) != 0) 168 device_printf(dev, "config_intrhook_establish failed\n"); 169 return (0); 170 } 171 172 static int 173 mmc_detach(device_t dev) 174 { 175 struct mmc_softc *sc = device_get_softc(dev); 176 int err; 177 178 if ((err = mmc_delete_cards(sc)) != 0) 179 return (err); 180 mmc_power_down(sc); 181 MMC_LOCK_DESTROY(sc); 182 183 return (0); 184 } 185 186 static int 187 mmc_suspend(device_t dev) 188 { 189 struct mmc_softc *sc = device_get_softc(dev); 190 int err; 191 192 err = bus_generic_suspend(dev); 193 if (err) 194 return (err); 195 mmc_power_down(sc); 196 return (0); 197 } 198 199 static int 200 mmc_resume(device_t dev) 201 { 202 struct mmc_softc *sc = device_get_softc(dev); 203 204 mmc_scan(sc); 205 return (bus_generic_resume(dev)); 206 } 207 208 static int 209 mmc_acquire_bus(device_t busdev, device_t dev) 210 { 211 struct mmc_softc *sc; 212 struct mmc_ivars *ivar; 213 int err; 214 int rca; 215 216 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev); 217 if (err) 218 return (err); 219 sc = device_get_softc(busdev); 220 MMC_LOCK(sc); 221 if (sc->owner) 222 panic("mmc: host bridge didn't seralize us."); 223 sc->owner = dev; 224 MMC_UNLOCK(sc); 225 226 if (busdev != dev) { 227 /* 228 * Keep track of the last rca that we've selected. If 229 * we're asked to do it again, don't. We never 230 * unselect unless the bus code itself wants the mmc 231 * bus, and constantly reselecting causes problems. 232 */ 233 rca = mmc_get_rca(dev); 234 if (sc->last_rca != rca) { 235 mmc_select_card(sc, rca); 236 sc->last_rca = rca; 237 /* Prepare bus width for the new card. */ 238 ivar = device_get_ivars(dev); 239 if (bootverbose || mmc_debug) { 240 device_printf(busdev, 241 "setting bus width to %d bits\n", 242 (ivar->bus_width == bus_width_4) ? 4 : 243 (ivar->bus_width == bus_width_8) ? 8 : 1); 244 } 245 mmc_set_card_bus_width(sc, rca, ivar->bus_width); 246 mmcbr_set_bus_width(busdev, ivar->bus_width); 247 mmcbr_update_ios(busdev); 248 } 249 } else { 250 /* 251 * If there's a card selected, stand down. 252 */ 253 if (sc->last_rca != 0) { 254 mmc_select_card(sc, 0); 255 sc->last_rca = 0; 256 } 257 } 258 259 return (0); 260 } 261 262 static int 263 mmc_release_bus(device_t busdev, device_t dev) 264 { 265 struct mmc_softc *sc; 266 int err; 267 268 sc = device_get_softc(busdev); 269 270 MMC_LOCK(sc); 271 if (!sc->owner) 272 panic("mmc: releasing unowned bus."); 273 if (sc->owner != dev) 274 panic("mmc: you don't own the bus. game over."); 275 MMC_UNLOCK(sc); 276 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev); 277 if (err) 278 return (err); 279 MMC_LOCK(sc); 280 sc->owner = NULL; 281 MMC_UNLOCK(sc); 282 return (0); 283 } 284 285 static uint32_t 286 mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr) 287 { 288 289 return (ocr & MMC_OCR_VOLTAGE); 290 } 291 292 static int 293 mmc_highest_voltage(uint32_t ocr) 294 { 295 int i; 296 297 for (i = 30; i >= 0; i--) 298 if (ocr & (1 << i)) 299 return (i); 300 return (-1); 301 } 302 303 static void 304 mmc_wakeup(struct mmc_request *req) 305 { 306 struct mmc_softc *sc; 307 308 sc = (struct mmc_softc *)req->done_data; 309 MMC_LOCK(sc); 310 req->flags |= MMC_REQ_DONE; 311 MMC_UNLOCK(sc); 312 wakeup(req); 313 } 314 315 static int 316 mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req) 317 { 318 319 req->done = mmc_wakeup; 320 req->done_data = sc; 321 if (mmc_debug > 1) { 322 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x", 323 req->cmd->opcode, req->cmd->arg, req->cmd->flags); 324 if (req->cmd->data) { 325 kprintf(" data %d\n", (int)req->cmd->data->len); 326 } else 327 kprintf("\n"); 328 } 329 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req); 330 MMC_LOCK(sc); 331 while ((req->flags & MMC_REQ_DONE) == 0) 332 lksleep(req, &sc->sc_lock, 0, "mmcreq", 0); 333 MMC_UNLOCK(sc); 334 if (mmc_debug > 2 || (mmc_debug > 1 && req->cmd->error)) 335 device_printf(sc->dev, "RESULT: %d\n", req->cmd->error); 336 return (0); 337 } 338 339 static int 340 mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req) 341 { 342 struct mmc_softc *sc = device_get_softc(brdev); 343 344 return (mmc_wait_for_req(sc, req)); 345 } 346 347 static int 348 mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries) 349 { 350 struct mmc_request mreq; 351 352 memset(&mreq, 0, sizeof(mreq)); 353 memset(cmd->resp, 0, sizeof(cmd->resp)); 354 cmd->retries = retries; 355 mreq.cmd = cmd; 356 mmc_wait_for_req(sc, &mreq); 357 return (cmd->error); 358 } 359 360 static int 361 mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca, 362 struct mmc_command *cmd, int retries) 363 { 364 struct mmc_command appcmd; 365 int err = MMC_ERR_NONE, i; 366 367 for (i = 0; i <= retries; i++) { 368 appcmd.opcode = MMC_APP_CMD; 369 appcmd.arg = rca << 16; 370 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 371 appcmd.data = NULL; 372 mmc_wait_for_cmd(sc, &appcmd, 0); 373 err = appcmd.error; 374 if (err != MMC_ERR_NONE) 375 continue; 376 if (!(appcmd.resp[0] & R1_APP_CMD)) 377 return MMC_ERR_FAILED; 378 mmc_wait_for_cmd(sc, cmd, 0); 379 err = cmd->error; 380 if (err == MMC_ERR_NONE) 381 break; 382 } 383 return (err); 384 } 385 386 static int 387 mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode, 388 uint32_t arg, uint32_t flags, uint32_t *resp, int retries) 389 { 390 struct mmc_command cmd; 391 int err; 392 393 memset(&cmd, 0, sizeof(cmd)); 394 cmd.opcode = opcode; 395 cmd.arg = arg; 396 cmd.flags = flags; 397 cmd.data = NULL; 398 err = mmc_wait_for_cmd(sc, &cmd, retries); 399 if (err) 400 return (err); 401 if (cmd.error) 402 return (cmd.error); 403 if (resp) { 404 if (flags & MMC_RSP_136) 405 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t)); 406 else 407 *resp = cmd.resp[0]; 408 } 409 return (0); 410 } 411 412 static void 413 mmc_idle_cards(struct mmc_softc *sc) 414 { 415 device_t dev; 416 struct mmc_command cmd; 417 418 dev = sc->dev; 419 mmcbr_set_chip_select(dev, cs_high); 420 mmcbr_update_ios(dev); 421 mmc_ms_delay(1); 422 423 memset(&cmd, 0, sizeof(cmd)); 424 cmd.opcode = MMC_GO_IDLE_STATE; 425 cmd.arg = 0; 426 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC; 427 cmd.data = NULL; 428 mmc_wait_for_cmd(sc, &cmd, 0); 429 mmc_ms_delay(1); 430 431 mmcbr_set_chip_select(dev, cs_dontcare); 432 mmcbr_update_ios(dev); 433 mmc_ms_delay(1); 434 } 435 436 static int 437 mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 438 { 439 struct mmc_command cmd; 440 int err = MMC_ERR_NONE, i; 441 442 memset(&cmd, 0, sizeof(cmd)); 443 cmd.opcode = ACMD_SD_SEND_OP_COND; 444 cmd.arg = ocr; 445 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 446 cmd.data = NULL; 447 448 for (i = 0; i < 100; i++) { 449 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES); 450 if (err != MMC_ERR_NONE) 451 break; 452 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 453 (ocr & MMC_OCR_VOLTAGE) == 0) 454 break; 455 err = MMC_ERR_TIMEOUT; 456 mmc_ms_delay(10); 457 } 458 if (rocr && err == MMC_ERR_NONE) 459 *rocr = cmd.resp[0]; 460 return (err); 461 } 462 463 static int 464 mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr) 465 { 466 struct mmc_command cmd; 467 int err = MMC_ERR_NONE, i; 468 469 memset(&cmd, 0, sizeof(cmd)); 470 cmd.opcode = MMC_SEND_OP_COND; 471 cmd.arg = ocr; 472 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; 473 cmd.data = NULL; 474 475 for (i = 0; i < 100; i++) { 476 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 477 if (err != MMC_ERR_NONE) 478 break; 479 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) || 480 (ocr & MMC_OCR_VOLTAGE) == 0) 481 break; 482 err = MMC_ERR_TIMEOUT; 483 mmc_ms_delay(10); 484 } 485 if (rocr && err == MMC_ERR_NONE) 486 *rocr = cmd.resp[0]; 487 return (err); 488 } 489 490 static int 491 mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs) 492 { 493 struct mmc_command cmd; 494 int err; 495 496 memset(&cmd, 0, sizeof(cmd)); 497 cmd.opcode = SD_SEND_IF_COND; 498 cmd.arg = (vhs << 8) + 0xAA; 499 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR; 500 cmd.data = NULL; 501 502 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 503 return (err); 504 } 505 506 static void 507 mmc_power_up(struct mmc_softc *sc) 508 { 509 device_t dev; 510 511 dev = sc->dev; 512 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev))); 513 mmcbr_set_bus_mode(dev, opendrain); 514 mmcbr_set_chip_select(dev, cs_dontcare); 515 mmcbr_set_bus_width(dev, bus_width_1); 516 mmcbr_set_power_mode(dev, power_up); 517 mmcbr_set_clock(dev, 0); 518 mmcbr_update_ios(dev); 519 mmc_ms_delay(1); 520 521 mmcbr_set_clock(dev, mmcbr_get_f_min(sc->dev)); 522 mmcbr_set_timing(dev, bus_timing_normal); 523 mmcbr_set_power_mode(dev, power_on); 524 mmcbr_update_ios(dev); 525 mmc_ms_delay(2); 526 } 527 528 static void 529 mmc_power_down(struct mmc_softc *sc) 530 { 531 device_t dev = sc->dev; 532 533 mmcbr_set_bus_mode(dev, opendrain); 534 mmcbr_set_chip_select(dev, cs_dontcare); 535 mmcbr_set_bus_width(dev, bus_width_1); 536 mmcbr_set_power_mode(dev, power_off); 537 mmcbr_set_clock(dev, 0); 538 mmcbr_set_timing(dev, bus_timing_normal); 539 mmcbr_update_ios(dev); 540 } 541 542 static int 543 mmc_select_card(struct mmc_softc *sc, uint16_t rca) 544 { 545 int flags; 546 547 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC; 548 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16, 549 flags, NULL, CMD_RETRIES)); 550 } 551 552 static int 553 mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value) 554 { 555 struct mmc_command cmd; 556 int err; 557 558 cmd.opcode = MMC_SWITCH_FUNC; 559 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) | 560 (index << 16) | 561 (value << 8) | 562 set; 563 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 564 cmd.data = NULL; 565 err = mmc_wait_for_cmd(sc, &cmd, 0); 566 return (err); 567 } 568 569 static int 570 mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value, 571 uint8_t *res) 572 { 573 int err; 574 struct mmc_command cmd; 575 struct mmc_data data; 576 577 memset(&cmd, 0, sizeof(struct mmc_command)); 578 memset(&data, 0, sizeof(struct mmc_data)); 579 memset(res, 0, 64); 580 581 cmd.opcode = SD_SWITCH_FUNC; 582 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 583 cmd.arg = mode << 31; /* 0 - check, 1 - set */ 584 cmd.arg |= 0x00FFFFFF; 585 cmd.arg &= ~(0xF << (grp * 4)); 586 cmd.arg |= value << (grp * 4); 587 cmd.data = &data; 588 589 data.data = res; 590 data.len = 64; 591 data.flags = MMC_DATA_READ; 592 593 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 594 return (err); 595 } 596 597 static int 598 mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width) 599 { 600 struct mmc_command cmd; 601 int err; 602 uint8_t value; 603 604 if (mmcbr_get_mode(sc->dev) == mode_sd) { 605 memset(&cmd, 0, sizeof(struct mmc_command)); 606 cmd.opcode = ACMD_SET_BUS_WIDTH; 607 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 608 switch (width) { 609 case bus_width_1: 610 cmd.arg = SD_BUS_WIDTH_1; 611 break; 612 case bus_width_4: 613 cmd.arg = SD_BUS_WIDTH_4; 614 break; 615 default: 616 return (MMC_ERR_INVALID); 617 } 618 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 619 } else { 620 switch (width) { 621 case bus_width_1: 622 value = EXT_CSD_BUS_WIDTH_1; 623 break; 624 case bus_width_4: 625 value = EXT_CSD_BUS_WIDTH_4; 626 break; 627 case bus_width_8: 628 value = EXT_CSD_BUS_WIDTH_8; 629 break; 630 default: 631 return (MMC_ERR_INVALID); 632 } 633 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 634 value); 635 } 636 return (err); 637 } 638 639 static int 640 mmc_set_timing(struct mmc_softc *sc, int timing) 641 { 642 int err; 643 uint8_t value; 644 u_char switch_res[64]; 645 646 switch (timing) { 647 case bus_timing_normal: 648 value = 0; 649 break; 650 case bus_timing_hs: 651 value = 1; 652 break; 653 default: 654 return (MMC_ERR_INVALID); 655 } 656 if (mmcbr_get_mode(sc->dev) == mode_sd) 657 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, 658 value, switch_res); 659 else 660 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, 661 EXT_CSD_HS_TIMING, value); 662 return (err); 663 } 664 665 static int 666 mmc_test_bus_width(struct mmc_softc *sc) 667 { 668 struct mmc_command cmd; 669 struct mmc_data data; 670 int err; 671 uint8_t buf[8]; 672 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 673 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; 674 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, }; 675 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, }; 676 677 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) { 678 mmcbr_set_bus_width(sc->dev, bus_width_8); 679 mmcbr_update_ios(sc->dev); 680 681 cmd.opcode = MMC_BUSTEST_W; 682 cmd.arg = 0; 683 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 684 cmd.data = &data; 685 686 data.data = p8; 687 data.len = 8; 688 data.flags = MMC_DATA_WRITE; 689 mmc_wait_for_cmd(sc, &cmd, 0); 690 691 cmd.opcode = MMC_BUSTEST_R; 692 cmd.arg = 0; 693 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 694 cmd.data = &data; 695 696 data.data = buf; 697 data.len = 8; 698 data.flags = MMC_DATA_READ; 699 err = mmc_wait_for_cmd(sc, &cmd, 0); 700 701 mmcbr_set_bus_width(sc->dev, bus_width_1); 702 mmcbr_update_ios(sc->dev); 703 704 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0) 705 return (bus_width_8); 706 } 707 708 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) { 709 mmcbr_set_bus_width(sc->dev, bus_width_4); 710 mmcbr_update_ios(sc->dev); 711 712 cmd.opcode = MMC_BUSTEST_W; 713 cmd.arg = 0; 714 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 715 cmd.data = &data; 716 717 data.data = p4; 718 data.len = 4; 719 data.flags = MMC_DATA_WRITE; 720 mmc_wait_for_cmd(sc, &cmd, 0); 721 722 cmd.opcode = MMC_BUSTEST_R; 723 cmd.arg = 0; 724 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 725 cmd.data = &data; 726 727 data.data = buf; 728 data.len = 4; 729 data.flags = MMC_DATA_READ; 730 err = mmc_wait_for_cmd(sc, &cmd, 0); 731 732 mmcbr_set_bus_width(sc->dev, bus_width_1); 733 mmcbr_update_ios(sc->dev); 734 735 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0) 736 return (bus_width_4); 737 } 738 return (bus_width_1); 739 } 740 741 static uint32_t 742 mmc_get_bits(uint32_t *bits, int bit_len, int start, int size) 743 { 744 const int i = (bit_len / 32) - (start / 32) - 1; 745 const int shift = start & 31; 746 uint32_t retval = bits[i] >> shift; 747 if (size + shift > 32) 748 retval |= bits[i - 1] << (32 - shift); 749 return (retval & ((1 << size) - 1)); 750 } 751 752 static void 753 mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid) 754 { 755 int i; 756 757 /* There's no version info, so we take it on faith */ 758 memset(cid, 0, sizeof(*cid)); 759 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 760 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16); 761 for (i = 0; i < 5; i++) 762 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 763 cid->pnm[5] = 0; 764 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8); 765 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32); 766 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000; 767 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4); 768 } 769 770 static void 771 mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid) 772 { 773 int i; 774 775 /* There's no version info, so we take it on faith */ 776 memset(cid, 0, sizeof(*cid)); 777 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8); 778 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8); 779 for (i = 0; i < 6; i++) 780 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8); 781 cid->pnm[6] = 0; 782 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8); 783 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32); 784 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4); 785 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997; 786 } 787 788 static const int exp[8] = { 789 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 790 }; 791 static const int mant[16] = { 792 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 793 }; 794 static const int cur_min[8] = { 795 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000 796 }; 797 static const int cur_max[8] = { 798 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000 799 }; 800 801 static void 802 mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd) 803 { 804 int v; 805 int m; 806 int e; 807 808 memset(csd, 0, sizeof(*csd)); 809 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2); 810 if (v == 0) { 811 m = mmc_get_bits(raw_csd, 128, 115, 4); 812 e = mmc_get_bits(raw_csd, 128, 112, 3); 813 csd->tacc = exp[e] * mant[m] + 9 / 10; 814 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 815 m = mmc_get_bits(raw_csd, 128, 99, 4); 816 e = mmc_get_bits(raw_csd, 128, 96, 3); 817 csd->tran_speed = exp[e] * 10000 * mant[m]; 818 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 819 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 820 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 821 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 822 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 823 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 824 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 825 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 826 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 827 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 828 m = mmc_get_bits(raw_csd, 128, 62, 12); 829 e = mmc_get_bits(raw_csd, 128, 47, 3); 830 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 831 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 832 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 833 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 834 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 835 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 836 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 837 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 838 } else if (v == 1) { 839 m = mmc_get_bits(raw_csd, 128, 115, 4); 840 e = mmc_get_bits(raw_csd, 128, 112, 3); 841 csd->tacc = exp[e] * mant[m] + 9 / 10; 842 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 843 m = mmc_get_bits(raw_csd, 128, 99, 4); 844 e = mmc_get_bits(raw_csd, 128, 96, 3); 845 csd->tran_speed = exp[e] * 10000 * mant[m]; 846 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 847 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 848 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 849 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 850 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 851 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 852 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) * 853 512 * 1024; 854 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1); 855 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1; 856 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7); 857 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 858 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 859 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 860 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 861 } else 862 panic("unknown SD CSD version"); 863 } 864 865 static void 866 mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd) 867 { 868 int m; 869 int e; 870 871 memset(csd, 0, sizeof(*csd)); 872 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2); 873 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4); 874 m = mmc_get_bits(raw_csd, 128, 115, 4); 875 e = mmc_get_bits(raw_csd, 128, 112, 3); 876 csd->tacc = exp[e] * mant[m] + 9 / 10; 877 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100; 878 m = mmc_get_bits(raw_csd, 128, 99, 4); 879 e = mmc_get_bits(raw_csd, 128, 96, 3); 880 csd->tran_speed = exp[e] * 10000 * mant[m]; 881 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12); 882 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4); 883 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1); 884 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1); 885 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1); 886 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1); 887 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)]; 888 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)]; 889 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)]; 890 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)]; 891 m = mmc_get_bits(raw_csd, 128, 62, 12); 892 e = mmc_get_bits(raw_csd, 128, 47, 3); 893 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len; 894 csd->erase_blk_en = 0; 895 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) * 896 (mmc_get_bits(raw_csd, 128, 37, 5) + 1); 897 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5); 898 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1); 899 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3); 900 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4); 901 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1); 902 } 903 904 static void 905 mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr) 906 { 907 unsigned int scr_struct; 908 909 memset(scr, 0, sizeof(*scr)); 910 911 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4); 912 if (scr_struct != 0) { 913 kprintf("Unrecognised SCR structure version %d\n", 914 scr_struct); 915 return; 916 } 917 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4); 918 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4); 919 } 920 921 static void 922 mmc_app_decode_sd_status(uint32_t *raw_sd_status, 923 struct mmc_sd_status *sd_status) 924 { 925 926 memset(sd_status, 0, sizeof(*sd_status)); 927 928 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2); 929 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1); 930 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16); 931 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12); 932 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8); 933 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8); 934 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4); 935 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16); 936 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6); 937 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2); 938 } 939 940 static int 941 mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid) 942 { 943 struct mmc_command cmd; 944 int err; 945 946 cmd.opcode = MMC_ALL_SEND_CID; 947 cmd.arg = 0; 948 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 949 cmd.data = NULL; 950 err = mmc_wait_for_cmd(sc, &cmd, 0); 951 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t)); 952 return (err); 953 } 954 955 static int 956 mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcid) 957 { 958 struct mmc_command cmd; 959 int err; 960 961 cmd.opcode = MMC_SEND_CSD; 962 cmd.arg = rca << 16; 963 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; 964 cmd.data = NULL; 965 err = mmc_wait_for_cmd(sc, &cmd, 0); 966 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t)); 967 return (err); 968 } 969 970 static int 971 mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr) 972 { 973 int err; 974 struct mmc_command cmd; 975 struct mmc_data data; 976 977 memset(&cmd, 0, sizeof(struct mmc_command)); 978 memset(&data, 0, sizeof(struct mmc_data)); 979 980 memset(rawscr, 0, 8); 981 cmd.opcode = ACMD_SEND_SCR; 982 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 983 cmd.arg = 0; 984 cmd.data = &data; 985 986 data.data = rawscr; 987 data.len = 8; 988 data.flags = MMC_DATA_READ; 989 990 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 991 rawscr[0] = be32toh(rawscr[0]); 992 rawscr[1] = be32toh(rawscr[1]); 993 return (err); 994 } 995 996 static int 997 mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd) 998 { 999 int err; 1000 struct mmc_command cmd; 1001 struct mmc_data data; 1002 1003 memset(&cmd, 0, sizeof(struct mmc_command)); 1004 memset(&data, 0, sizeof(struct mmc_data)); 1005 1006 memset(rawextcsd, 0, 512); 1007 cmd.opcode = MMC_SEND_EXT_CSD; 1008 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1009 cmd.arg = 0; 1010 cmd.data = &data; 1011 1012 data.data = rawextcsd; 1013 data.len = 512; 1014 data.flags = MMC_DATA_READ; 1015 1016 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES); 1017 return (err); 1018 } 1019 1020 static int 1021 mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus) 1022 { 1023 int err, i; 1024 struct mmc_command cmd; 1025 struct mmc_data data; 1026 1027 memset(&cmd, 0, sizeof(struct mmc_command)); 1028 memset(&data, 0, sizeof(struct mmc_data)); 1029 1030 memset(rawsdstatus, 0, 64); 1031 cmd.opcode = ACMD_SD_STATUS; 1032 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1033 cmd.arg = 0; 1034 cmd.data = &data; 1035 1036 data.data = rawsdstatus; 1037 data.len = 64; 1038 data.flags = MMC_DATA_READ; 1039 1040 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES); 1041 for (i = 0; i < 16; i++) 1042 rawsdstatus[i] = be32toh(rawsdstatus[i]); 1043 return (err); 1044 } 1045 1046 static int 1047 mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp) 1048 { 1049 struct mmc_command cmd; 1050 int err; 1051 1052 cmd.opcode = MMC_SET_RELATIVE_ADDR; 1053 cmd.arg = resp << 16; 1054 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1055 cmd.data = NULL; 1056 err = mmc_wait_for_cmd(sc, &cmd, 0); 1057 return (err); 1058 } 1059 1060 static int 1061 mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp) 1062 { 1063 struct mmc_command cmd; 1064 int err; 1065 1066 cmd.opcode = SD_SEND_RELATIVE_ADDR; 1067 cmd.arg = 0; 1068 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR; 1069 cmd.data = NULL; 1070 err = mmc_wait_for_cmd(sc, &cmd, 0); 1071 *resp = cmd.resp[0]; 1072 return (err); 1073 } 1074 1075 static void 1076 mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard) 1077 { 1078 device_printf(dev, "Card at relative address %d%s:\n", 1079 ivar->rca, newcard ? " added" : ""); 1080 device_printf(dev, " card: %s%s (0x%x/0x%x/\"%s\" rev %d.%d " 1081 "m/d %02d.%04d s/n %08x)\n", 1082 ivar->mode == mode_sd ? "SD" : "MMC", 1083 ivar->high_cap ? " High Capacity" : "", 1084 ivar->cid.mid, ivar->cid.oid, 1085 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f, 1086 ivar->cid.mdt_month, ivar->cid.mdt_year, ivar->cid.psn); 1087 device_printf(dev, " bus: %ubit, %uMHz%s\n", 1088 (ivar->bus_width == bus_width_1 ? 1 : 1089 (ivar->bus_width == bus_width_4 ? 4 : 8)), 1090 (ivar->timing == bus_timing_hs ? 1091 ivar->hs_tran_speed : ivar->tran_speed) / 1000000, 1092 ivar->timing == bus_timing_hs ? ", high speed timing" : ""); 1093 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n", 1094 ivar->sec_count, ivar->erase_sector, 1095 ivar->read_only ? ", read-only" : ""); 1096 } 1097 1098 static void 1099 mmc_discover_cards(struct mmc_softc *sc) 1100 { 1101 struct mmc_ivars *ivar = NULL; 1102 device_t *devlist; 1103 int err, i, devcount, newcard; 1104 uint32_t raw_cid[4]; 1105 uint32_t resp, sec_count; 1106 device_t child; 1107 uint16_t rca = 2; 1108 u_char switch_res[64]; 1109 1110 if (bootverbose || mmc_debug) 1111 device_printf(sc->dev, "Probing cards\n"); 1112 while (1) { 1113 err = mmc_all_send_cid(sc, raw_cid); 1114 if (err == MMC_ERR_TIMEOUT) 1115 break; 1116 if (err != MMC_ERR_NONE) { 1117 device_printf(sc->dev, "Error reading CID %d\n", err); 1118 break; 1119 } 1120 newcard = 1; 1121 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1122 return; 1123 for (i = 0; i < devcount; i++) { 1124 ivar = device_get_ivars(devlist[i]); 1125 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) { 1126 newcard = 0; 1127 break; 1128 } 1129 } 1130 kfree(devlist, M_TEMP); 1131 if (bootverbose || mmc_debug) { 1132 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n", 1133 newcard ? "New c" : "C", 1134 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]); 1135 } 1136 if (newcard) { 1137 ivar = kmalloc(sizeof(struct mmc_ivars), M_DEVBUF, 1138 M_WAITOK | M_ZERO); 1139 if (!ivar) 1140 return; 1141 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid)); 1142 } 1143 if (mmcbr_get_ro(sc->dev)) 1144 ivar->read_only = 1; 1145 ivar->bus_width = bus_width_1; 1146 ivar->timing = bus_timing_normal; 1147 ivar->mode = mmcbr_get_mode(sc->dev); 1148 if (ivar->mode == mode_sd) { 1149 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid); 1150 mmc_send_relative_addr(sc, &resp); 1151 ivar->rca = resp >> 16; 1152 /* Get card CSD. */ 1153 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1154 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd); 1155 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1156 if (ivar->csd.csd_structure > 0) 1157 ivar->high_cap = 1; 1158 ivar->tran_speed = ivar->csd.tran_speed; 1159 ivar->erase_sector = ivar->csd.erase_sector * 1160 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1161 /* Get card SCR. Card must be selected to fetch it. */ 1162 mmc_select_card(sc, ivar->rca); 1163 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr); 1164 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr); 1165 /* Get card switch capabilities (command class 10). */ 1166 if ((ivar->scr.sda_vsn >= 1) && 1167 (ivar->csd.ccc & (1<<10))) { 1168 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK, 1169 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, 1170 switch_res); 1171 if (switch_res[13] & 2) { 1172 ivar->timing = bus_timing_hs; 1173 ivar->hs_tran_speed = SD_MAX_HS; 1174 } 1175 } 1176 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status); 1177 mmc_app_decode_sd_status(ivar->raw_sd_status, 1178 &ivar->sd_status); 1179 if (ivar->sd_status.au_size != 0) { 1180 ivar->erase_sector = 1181 16 << ivar->sd_status.au_size; 1182 } 1183 mmc_select_card(sc, 0); 1184 /* Find max supported bus width. */ 1185 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) && 1186 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) 1187 ivar->bus_width = bus_width_4; 1188 if (bootverbose || mmc_debug) 1189 mmc_log_card(sc->dev, ivar, newcard); 1190 if (newcard) { 1191 /* Add device. */ 1192 child = device_add_child(sc->dev, NULL, -1); 1193 device_set_ivars(child, ivar); 1194 } 1195 return; 1196 } 1197 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid); 1198 ivar->rca = rca++; 1199 mmc_set_relative_addr(sc, ivar->rca); 1200 /* Get card CSD. */ 1201 mmc_send_csd(sc, ivar->rca, ivar->raw_csd); 1202 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd); 1203 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE; 1204 ivar->tran_speed = ivar->csd.tran_speed; 1205 ivar->erase_sector = ivar->csd.erase_sector * 1206 ivar->csd.write_bl_len / MMC_SECTOR_SIZE; 1207 /* Only MMC >= 4.x cards support EXT_CSD. */ 1208 if (ivar->csd.spec_vers >= 4) { 1209 /* Card must be selected to fetch EXT_CSD. */ 1210 mmc_select_card(sc, ivar->rca); 1211 mmc_send_ext_csd(sc, ivar->raw_ext_csd); 1212 /* Handle extended capacity from EXT_CSD */ 1213 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] + 1214 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) + 1215 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) + 1216 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24); 1217 if (sec_count != 0) { 1218 ivar->sec_count = sec_count; 1219 ivar->high_cap = 1; 1220 } 1221 /* Get card speed in high speed mode. */ 1222 ivar->timing = bus_timing_hs; 1223 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1224 & EXT_CSD_CARD_TYPE_52) 1225 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS; 1226 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE] 1227 & EXT_CSD_CARD_TYPE_26) 1228 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS; 1229 else 1230 ivar->hs_tran_speed = ivar->tran_speed; 1231 /* Find max supported bus width. */ 1232 ivar->bus_width = mmc_test_bus_width(sc); 1233 mmc_select_card(sc, 0); 1234 /* Handle HC erase sector size. */ 1235 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) { 1236 ivar->erase_sector = 1024 * 1237 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE]; 1238 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, 1239 EXT_CSD_ERASE_GRP_DEF, 1); 1240 } 1241 } else { 1242 ivar->bus_width = bus_width_1; 1243 ivar->timing = bus_timing_normal; 1244 } 1245 if (bootverbose || mmc_debug) 1246 mmc_log_card(sc->dev, ivar, newcard); 1247 if (newcard) { 1248 /* Add device. */ 1249 child = device_add_child(sc->dev, NULL, -1); 1250 device_set_ivars(child, ivar); 1251 } 1252 } 1253 } 1254 1255 static void 1256 mmc_rescan_cards(struct mmc_softc *sc) 1257 { 1258 struct mmc_ivars *ivar = NULL; 1259 device_t *devlist; 1260 int err, i, devcount; 1261 1262 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1263 return; 1264 for (i = 0; i < devcount; i++) { 1265 ivar = device_get_ivars(devlist[i]); 1266 if (mmc_select_card(sc, ivar->rca)) { 1267 if (bootverbose || mmc_debug) 1268 device_printf(sc->dev, "Card at relative address %d lost.\n", 1269 ivar->rca); 1270 device_delete_child(sc->dev, devlist[i]); 1271 kfree(ivar, M_DEVBUF); 1272 } 1273 } 1274 kfree(devlist, M_TEMP); 1275 mmc_select_card(sc, 0); 1276 } 1277 1278 static int 1279 mmc_delete_cards(struct mmc_softc *sc) 1280 { 1281 struct mmc_ivars *ivar; 1282 device_t *devlist; 1283 int err, i, devcount; 1284 1285 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0) 1286 return (err); 1287 for (i = 0; i < devcount; i++) { 1288 ivar = device_get_ivars(devlist[i]); 1289 if (bootverbose || mmc_debug) 1290 device_printf(sc->dev, "Card at relative address %d deleted.\n", 1291 ivar->rca); 1292 device_delete_child(sc->dev, devlist[i]); 1293 kfree(ivar, M_DEVBUF); 1294 } 1295 kfree(devlist, M_TEMP); 1296 return (0); 1297 } 1298 1299 static void 1300 mmc_go_discovery(struct mmc_softc *sc) 1301 { 1302 uint32_t ocr; 1303 device_t dev; 1304 int err; 1305 1306 dev = sc->dev; 1307 if (mmcbr_get_power_mode(dev) != power_on) { 1308 /* 1309 * First, try SD modes 1310 */ 1311 mmcbr_set_mode(dev, mode_sd); 1312 mmc_power_up(sc); 1313 mmcbr_set_bus_mode(dev, pushpull); 1314 if (bootverbose || mmc_debug) 1315 device_printf(sc->dev, "Probing bus\n"); 1316 mmc_idle_cards(sc); 1317 err = mmc_send_if_cond(sc, 1); 1318 if ((bootverbose || mmc_debug) && err == 0) 1319 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n"); 1320 if (mmc_send_app_op_cond(sc, err ? 0 : MMC_OCR_CCS, &ocr) != 1321 MMC_ERR_NONE) { 1322 if (bootverbose || mmc_debug) 1323 device_printf(sc->dev, "SD probe: failed\n"); 1324 /* 1325 * Failed, try MMC 1326 */ 1327 mmcbr_set_mode(dev, mode_mmc); 1328 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) { 1329 if (bootverbose || mmc_debug) 1330 device_printf(sc->dev, "MMC probe: failed\n"); 1331 ocr = 0; /* Failed both, powerdown. */ 1332 } else if (bootverbose || mmc_debug) 1333 device_printf(sc->dev, 1334 "MMC probe: OK (OCR: 0x%08x)\n", ocr); 1335 } else if (bootverbose || mmc_debug) 1336 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr); 1337 1338 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr)); 1339 if (mmcbr_get_ocr(dev) != 0) 1340 mmc_idle_cards(sc); 1341 } else { 1342 mmcbr_set_bus_mode(dev, opendrain); 1343 mmcbr_set_clock(dev, mmcbr_get_f_min(dev)); 1344 mmcbr_update_ios(dev); 1345 /* XXX recompute vdd based on new cards? */ 1346 } 1347 /* 1348 * Make sure that we have a mutually agreeable voltage to at least 1349 * one card on the bus. 1350 */ 1351 if (bootverbose || mmc_debug) 1352 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev)); 1353 if (mmcbr_get_ocr(dev) == 0) { 1354 mmc_delete_cards(sc); 1355 mmc_power_down(sc); 1356 return; 1357 } 1358 /* 1359 * Reselect the cards after we've idled them above. 1360 */ 1361 if (mmcbr_get_mode(dev) == mode_sd) { 1362 err = mmc_send_if_cond(sc, 1); 1363 mmc_send_app_op_cond(sc, 1364 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL); 1365 } else 1366 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL); 1367 mmc_discover_cards(sc); 1368 mmc_rescan_cards(sc); 1369 1370 mmcbr_set_bus_mode(dev, pushpull); 1371 mmcbr_update_ios(dev); 1372 mmc_calculate_clock(sc); 1373 bus_generic_attach(dev); 1374 /* mmc_update_children_sysctl(dev);*/ 1375 } 1376 1377 static int 1378 mmc_calculate_clock(struct mmc_softc *sc) 1379 { 1380 int max_dtr, max_hs_dtr, max_timing; 1381 int nkid, i, f_min, f_max; 1382 device_t *kids; 1383 struct mmc_ivars *ivar; 1384 1385 f_min = mmcbr_get_f_min(sc->dev); 1386 f_max = mmcbr_get_f_max(sc->dev); 1387 max_dtr = max_hs_dtr = f_max; 1388 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED)) 1389 max_timing = bus_timing_hs; 1390 else 1391 max_timing = bus_timing_normal; 1392 if (device_get_children(sc->dev, &kids, &nkid) != 0) 1393 panic("can't get children"); 1394 for (i = 0; i < nkid; i++) { 1395 ivar = device_get_ivars(kids[i]); 1396 if (ivar->timing < max_timing) 1397 max_timing = ivar->timing; 1398 if (ivar->tran_speed < max_dtr) 1399 max_dtr = ivar->tran_speed; 1400 if (ivar->hs_tran_speed < max_hs_dtr) 1401 max_hs_dtr = ivar->hs_tran_speed; 1402 } 1403 for (i = 0; i < nkid; i++) { 1404 ivar = device_get_ivars(kids[i]); 1405 if (ivar->timing == bus_timing_normal) 1406 continue; 1407 mmc_select_card(sc, ivar->rca); 1408 mmc_set_timing(sc, max_timing); 1409 } 1410 mmc_select_card(sc, 0); 1411 kfree(kids, M_TEMP); 1412 if (max_timing == bus_timing_hs) 1413 max_dtr = max_hs_dtr; 1414 if (bootverbose || mmc_debug) { 1415 device_printf(sc->dev, 1416 "setting transfer rate to %d.%03dMHz%s\n", 1417 max_dtr / 1000000, (max_dtr / 1000) % 1000, 1418 max_timing == bus_timing_hs ? " (high speed timing)" : ""); 1419 } 1420 mmcbr_set_timing(sc->dev, max_timing); 1421 mmcbr_set_clock(sc->dev, max_dtr); 1422 mmcbr_update_ios(sc->dev); 1423 return max_dtr; 1424 } 1425 1426 static void 1427 mmc_scan(struct mmc_softc *sc) 1428 { 1429 device_t dev = sc->dev; 1430 1431 mmc_acquire_bus(dev, dev); 1432 mmc_go_discovery(sc); 1433 mmc_release_bus(dev, dev); 1434 } 1435 1436 static int 1437 mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result) 1438 { 1439 struct mmc_ivars *ivar = device_get_ivars(child); 1440 1441 switch (which) { 1442 default: 1443 return (EINVAL); 1444 case MMC_IVAR_DSR_IMP: 1445 *(int *)result = ivar->csd.dsr_imp; 1446 break; 1447 case MMC_IVAR_MEDIA_SIZE: 1448 *(off_t *)result = ivar->sec_count; 1449 break; 1450 case MMC_IVAR_RCA: 1451 *(int *)result = ivar->rca; 1452 break; 1453 case MMC_IVAR_SECTOR_SIZE: 1454 *(int *)result = MMC_SECTOR_SIZE; 1455 break; 1456 case MMC_IVAR_TRAN_SPEED: 1457 *(int *)result = mmcbr_get_clock(bus); 1458 break; 1459 case MMC_IVAR_READ_ONLY: 1460 *(int *)result = ivar->read_only; 1461 break; 1462 case MMC_IVAR_HIGH_CAP: 1463 *(int *)result = ivar->high_cap; 1464 break; 1465 case MMC_IVAR_CARD_TYPE: 1466 *(int *)result = ivar->mode; 1467 break; 1468 case MMC_IVAR_BUS_WIDTH: 1469 *(int *)result = ivar->bus_width; 1470 break; 1471 case MMC_IVAR_ERASE_SECTOR: 1472 *(int *)result = ivar->erase_sector; 1473 break; 1474 case MMC_IVAR_MAX_DATA: 1475 *(int *)result = mmcbr_get_max_data(bus); 1476 break; 1477 } 1478 return (0); 1479 } 1480 1481 static int 1482 mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value) 1483 { 1484 /* 1485 * None are writable ATM 1486 */ 1487 return (EINVAL); 1488 } 1489 1490 1491 static void 1492 mmc_delayed_attach(void *xsc) 1493 { 1494 struct mmc_softc *sc = xsc; 1495 1496 mmc_scan(sc); 1497 config_intrhook_disestablish(&sc->config_intrhook); 1498 } 1499 1500 static device_method_t mmc_methods[] = { 1501 /* device_if */ 1502 DEVMETHOD(device_probe, mmc_probe), 1503 DEVMETHOD(device_attach, mmc_attach), 1504 DEVMETHOD(device_detach, mmc_detach), 1505 DEVMETHOD(device_suspend, mmc_suspend), 1506 DEVMETHOD(device_resume, mmc_resume), 1507 1508 /* Bus interface */ 1509 DEVMETHOD(bus_read_ivar, mmc_read_ivar), 1510 DEVMETHOD(bus_write_ivar, mmc_write_ivar), 1511 1512 /* MMC Bus interface */ 1513 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request), 1514 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus), 1515 DEVMETHOD(mmcbus_release_bus, mmc_release_bus), 1516 1517 {0, 0}, 1518 }; 1519 1520 static driver_t mmc_driver = { 1521 "mmc", 1522 mmc_methods, 1523 sizeof(struct mmc_softc), 1524 }; 1525 static devclass_t mmc_devclass; 1526 1527 1528 DRIVER_MODULE(mmc, sdhci, mmc_driver, mmc_devclass, NULL, NULL); 1529