drivers/mmc/mmc.c

   1 /*
   2  * Copyright 2008, Freescale Semiconductor, Inc
   3  * Andy Fleming
   4  *
   5  * Based vaguely on the Linux code
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <config.h>
  11 #include <common.h>
  12 #include <command.h>
  13 #include <errno.h>
  14 #include <mmc.h>
  15 #include <part.h>
  16 #include <malloc.h>
  17 #include <linux/list.h>
  18 #include <div64.h>
  19 #include "mmc_private.h"
  20
  21 static struct list_head mmc_devices;
  22 static int cur_dev_num = -1;
  23
  24 __weak int board_mmc_getwp(struct mmc *mmc)
  25 {
  26         return -1;
  27 }
  28
  29 int mmc_getwp(struct mmc *mmc)
  30 {
  31         int wp;
  32
  33         wp = board_mmc_getwp(mmc);
  34
  35         if (wp < 0) {
  36                 if (mmc->cfg->ops->getwp)
  37                         wp = mmc->cfg->ops->getwp(mmc);
  38                 else
  39                         wp = 0;
  40         }
  41
  42         return wp;
  43 }
  44
  45 __weak int board_mmc_getcd(struct mmc *mmc)
  46 {
  47         return -1;
  48 }
  49
  50 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
  51 {
  52         int ret;
  53
  54 #ifdef CONFIG_MMC_TRACE
  55         int i;
  56         u8 *ptr;
  57
  58         printf("CMD_SEND:%d\n", cmd->cmdidx);
  59         printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
  60         ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
  61         switch (cmd->resp_type) {
  62                 case MMC_RSP_NONE:
  63                         printf("\t\tMMC_RSP_NONE\n");
  64                         break;
  65                 case MMC_RSP_R1:
  66                         printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
  67                                 cmd->response[0]);
  68                         break;
  69                 case MMC_RSP_R1b:
  70                         printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
  71                                 cmd->response[0]);
  72                         break;
  73                 case MMC_RSP_R2:
  74                         printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
  75                                 cmd->response[0]);
  76                         printf("\t\t          \t\t 0x%08X \n",
  77                                 cmd->response[1]);
  78                         printf("\t\t          \t\t 0x%08X \n",
  79                                 cmd->response[2]);
  80                         printf("\t\t          \t\t 0x%08X \n",
  81                                 cmd->response[3]);
  82                         printf("\n");
  83                         printf("\t\t\t\t\tDUMPING DATA\n");
  84                         for (i = 0; i < 4; i++) {
  85                                 int j;
  86                                 printf("\t\t\t\t\t%03d - ", i*4);
  87                                 ptr = (u8 *)&cmd->response[i];
  88                                 ptr += 3;
  89                                 for (j = 0; j < 4; j++)
  90                                         printf("%02X ", *ptr--);
  91                                 printf("\n");
  92                         }
  93                         break;
  94                 case MMC_RSP_R3:
  95                         printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
  96                                 cmd->response[0]);
  97                         break;
  98                 default:
  99                         printf("\t\tERROR MMC rsp not supported\n");
 100                         break;
 101         }
 102 #else
 103         ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
 104 #endif
 105         return ret;
 106 }
 107
 108 int mmc_send_status(struct mmc *mmc, int timeout)
 109 {
 110         struct mmc_cmd cmd;
 111         int err, retries = 5;
 112 #ifdef CONFIG_MMC_TRACE
 113         int status;
 114 #endif
 115
 116         cmd.cmdidx = MMC_CMD_SEND_STATUS;
 117         cmd.resp_type = MMC_RSP_R1;
 118         if (!mmc_host_is_spi(mmc))
 119                 cmd.cmdarg = mmc->rca << 16;
 120
 121         do {
 122                 err = mmc_send_cmd(mmc, &cmd, NULL);
 123                 if (!err) {
 124                         if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
 125                             (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
 126                              MMC_STATE_PRG)
 127                                 break;
 128                         else if (cmd.response[0] & MMC_STATUS_MASK) {
 129 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 130                                 printf("Status Error: 0x%08X\n",
 131                                         cmd.response[0]);
 132 #endif
 133                                 return COMM_ERR;
 134                         }
 135                 } else if (--retries < 0)
 136                         return err;
 137
 138                 udelay(1000);
 139
 140         } while (timeout--);
 141
 142 #ifdef CONFIG_MMC_TRACE
 143         status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
 144         printf("CURR STATE:%d\n", status);
 145 #endif
 146         if (timeout <= 0) {
 147 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 148                 printf("Timeout waiting card ready\n");
 149 #endif
 150                 return TIMEOUT;
 151         }
 152         if (cmd.response[0] & MMC_STATUS_SWITCH_ERROR)
 153                 return SWITCH_ERR;
 154
 155         return 0;
 156 }
 157
 158 int mmc_set_blocklen(struct mmc *mmc, int len)
 159 {
 160         struct mmc_cmd cmd;
 161
 162         if (mmc->ddr_mode)
 163                 return 0;
 164
 165         cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
 166         cmd.resp_type = MMC_RSP_R1;
 167         cmd.cmdarg = len;
 168
 169         return mmc_send_cmd(mmc, &cmd, NULL);
 170 }
 171
 172 struct mmc *find_mmc_device(int dev_num)
 173 {
 174         struct mmc *m;
 175         struct list_head *entry;
 176
 177         list_for_each(entry, &mmc_devices) {
 178                 m = list_entry(entry, struct mmc, link);
 179
 180                 if (m->block_dev.dev == dev_num)
 181                         return m;
 182         }
 183
 184 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 185         printf("MMC Device %d not found\n", dev_num);
 186 #endif
 187
 188         return NULL;
 189 }
 190
 191 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
 192                            lbaint_t blkcnt)
 193 {
 194         struct mmc_cmd cmd;
 195         struct mmc_data data;
 196
 197         if (blkcnt > 1)
 198                 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
 199         else
 200                 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
 201
 202         if (mmc->high_capacity)
 203                 cmd.cmdarg = start;
 204         else
 205                 cmd.cmdarg = start * mmc->read_bl_len;
 206
 207         cmd.resp_type = MMC_RSP_R1;
 208
 209         data.dest = dst;
 210         data.blocks = blkcnt;
 211         data.blocksize = mmc->read_bl_len;
 212         data.flags = MMC_DATA_READ;
 213
 214         if (mmc_send_cmd(mmc, &cmd, &data))
 215                 return 0;
 216
 217         if (blkcnt > 1) {
 218                 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
 219                 cmd.cmdarg = 0;
 220                 cmd.resp_type = MMC_RSP_R1b;
 221                 if (mmc_send_cmd(mmc, &cmd, NULL)) {
 222 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 223                         printf("mmc fail to send stop cmd\n");
 224 #endif
 225                         return 0;
 226                 }
 227         }
 228
 229         return blkcnt;
 230 }
 231
 232 static ulong mmc_bread(int dev_num, lbaint_t start, lbaint_t blkcnt, void *dst)
 233 {
 234         lbaint_t cur, blocks_todo = blkcnt;
 235
 236         if (blkcnt == 0)
 237                 return 0;
 238
 239         struct mmc *mmc = find_mmc_device(dev_num);
 240         if (!mmc)
 241                 return 0;
 242
 243         if ((start + blkcnt) > mmc->block_dev.lba) {
 244 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 245                 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
 246                         start + blkcnt, mmc->block_dev.lba);
 247 #endif
 248                 return 0;
 249         }
 250
 251         if (mmc_set_blocklen(mmc, mmc->read_bl_len))
 252                 return 0;
 253
 254         do {
 255                 cur = (blocks_todo > mmc->cfg->b_max) ?
 256                         mmc->cfg->b_max : blocks_todo;
 257                 if(mmc_read_blocks(mmc, dst, start, cur) != cur)
 258                         return 0;
 259                 blocks_todo -= cur;
 260                 start += cur;
 261                 dst += cur * mmc->read_bl_len;
 262         } while (blocks_todo > 0);
 263
 264         return blkcnt;
 265 }
 266
 267 static int mmc_go_idle(struct mmc *mmc)
 268 {
 269         struct mmc_cmd cmd;
 270         int err;
 271
 272         udelay(1000);
 273
 274         cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
 275         cmd.cmdarg = 0;
 276         cmd.resp_type = MMC_RSP_NONE;
 277
 278         err = mmc_send_cmd(mmc, &cmd, NULL);
 279
 280         if (err)
 281                 return err;
 282
 283         udelay(2000);
 284
 285         return 0;
 286 }
 287
 288 static int sd_send_op_cond(struct mmc *mmc)
 289 {
 290         int timeout = 1000;
 291         int err;
 292         struct mmc_cmd cmd;
 293
 294         do {
 295                 cmd.cmdidx = MMC_CMD_APP_CMD;
 296                 cmd.resp_type = MMC_RSP_R1;
 297                 cmd.cmdarg = 0;
 298
 299                 err = mmc_send_cmd(mmc, &cmd, NULL);
 300
 301                 if (err)
 302                         return err;
 303
 304                 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
 305                 cmd.resp_type = MMC_RSP_R3;
 306
 307                 /*
 308                  * Most cards do not answer if some reserved bits
 309                  * in the ocr are set. However, Some controller
 310                  * can set bit 7 (reserved for low voltages), but
 311                  * how to manage low voltages SD card is not yet
 312                  * specified.
 313                  */
 314                 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
 315                         (mmc->cfg->voltages & 0xff8000);
 316
 317                 if (mmc->version == SD_VERSION_2)
 318                         cmd.cmdarg |= OCR_HCS;
 319
 320                 err = mmc_send_cmd(mmc, &cmd, NULL);
 321
 322                 if (err)
 323                         return err;
 324
 325                 udelay(1000);
 326         } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
 327
 328         if (timeout <= 0)
 329                 return UNUSABLE_ERR;
 330
 331         if (mmc->version != SD_VERSION_2)
 332                 mmc->version = SD_VERSION_1_0;
 333
 334         if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
 335                 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
 336                 cmd.resp_type = MMC_RSP_R3;
 337                 cmd.cmdarg = 0;
 338
 339                 err = mmc_send_cmd(mmc, &cmd, NULL);
 340
 341                 if (err)
 342                         return err;
 343         }
 344
 345         mmc->ocr = cmd.response[0];
 346
 347         mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
 348         mmc->rca = 0;
 349
 350         return 0;
 351 }
 352
 353 /* We pass in the cmd since otherwise the init seems to fail */
 354 static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
 355                 int use_arg)
 356 {
 357         int err;
 358
 359         cmd->cmdidx = MMC_CMD_SEND_OP_COND;
 360         cmd->resp_type = MMC_RSP_R3;
 361         cmd->cmdarg = 0;
 362         if (use_arg && !mmc_host_is_spi(mmc)) {
 363                 cmd->cmdarg =
 364                         (mmc->cfg->voltages &
 365                         (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
 366                         (mmc->op_cond_response & OCR_ACCESS_MODE);
 367
 368                 if (mmc->cfg->host_caps & MMC_MODE_HC)
 369                         cmd->cmdarg |= OCR_HCS;
 370         }
 371         err = mmc_send_cmd(mmc, cmd, NULL);
 372         if (err)
 373                 return err;
 374         mmc->op_cond_response = cmd->response[0];
 375         return 0;
 376 }
 377
 378 static int mmc_send_op_cond(struct mmc *mmc)
 379 {
 380         struct mmc_cmd cmd;
 381         int err, i;
 382
 383         /* Some cards seem to need this */
 384         mmc_go_idle(mmc);
 385
 386         /* Asking to the card its capabilities */
 387         mmc->op_cond_pending = 1;
 388         for (i = 0; i < 2; i++) {
 389                 err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
 390                 if (err)
 391                         return err;
 392
 393                 /* exit if not busy (flag seems to be inverted) */
 394                 if (mmc->op_cond_response & OCR_BUSY)
 395                         return 0;
 396         }
 397         return IN_PROGRESS;
 398 }
 399
 400 static int mmc_complete_op_cond(struct mmc *mmc)
 401 {
 402         struct mmc_cmd cmd;
 403         int timeout = 1000;
 404         uint start;
 405         int err;
 406
 407         mmc->op_cond_pending = 0;
 408         start = get_timer(0);
 409         do {
 410                 err = mmc_send_op_cond_iter(mmc, &cmd, 1);
 411                 if (err)
 412                         return err;
 413                 if (get_timer(start) > timeout)
 414                         return UNUSABLE_ERR;
 415                 udelay(100);
 416         } while (!(mmc->op_cond_response & OCR_BUSY));
 417
 418         if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
 419                 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
 420                 cmd.resp_type = MMC_RSP_R3;
 421                 cmd.cmdarg = 0;
 422
 423                 err = mmc_send_cmd(mmc, &cmd, NULL);
 424
 425                 if (err)
 426                         return err;
 427         }
 428
 429         mmc->version = MMC_VERSION_UNKNOWN;
 430         mmc->ocr = cmd.response[0];
 431
 432         mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
 433         mmc->rca = 1;
 434
 435         return 0;
 436 }
 437
 438
 439 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
 440 {
 441         struct mmc_cmd cmd;
 442         struct mmc_data data;
 443         int err;
 444
 445         /* Get the Card Status Register */
 446         cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
 447         cmd.resp_type = MMC_RSP_R1;
 448         cmd.cmdarg = 0;
 449
 450         data.dest = (char *)ext_csd;
 451         data.blocks = 1;
 452         data.blocksize = MMC_MAX_BLOCK_LEN;
 453         data.flags = MMC_DATA_READ;
 454
 455         err = mmc_send_cmd(mmc, &cmd, &data);
 456
 457         return err;
 458 }
 459
 460
 461 static int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
 462 {
 463         struct mmc_cmd cmd;
 464         int timeout = 1000;
 465         int ret;
 466
 467         cmd.cmdidx = MMC_CMD_SWITCH;
 468         cmd.resp_type = MMC_RSP_R1b;
 469         cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
 470                                  (index << 16) |
 471                                  (value << 8);
 472
 473         ret = mmc_send_cmd(mmc, &cmd, NULL);
 474
 475         /* Waiting for the ready status */
 476         if (!ret)
 477                 ret = mmc_send_status(mmc, timeout);
 478
 479         return ret;
 480
 481 }
 482
 483 static int mmc_change_freq(struct mmc *mmc)
 484 {
 485         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 486         char cardtype;
 487         int err;
 488
 489         mmc->card_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
 490
 491         if (mmc_host_is_spi(mmc))
 492                 return 0;
 493
 494         /* Only version 4 supports high-speed */
 495         if (mmc->version < MMC_VERSION_4)
 496                 return 0;
 497
 498         err = mmc_send_ext_csd(mmc, ext_csd);
 499
 500         if (err)
 501                 return err;
 502
 503         cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
 504
 505         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
 506
 507         if (err)
 508                 return err == SWITCH_ERR ? 0 : err;
 509
 510         /* Now check to see that it worked */
 511         err = mmc_send_ext_csd(mmc, ext_csd);
 512
 513         if (err)
 514                 return err;
 515
 516         /* No high-speed support */
 517         if (!ext_csd[EXT_CSD_HS_TIMING])
 518                 return 0;
 519
 520         /* High Speed is set, there are two types: 52MHz and 26MHz */
 521         if (cardtype & EXT_CSD_CARD_TYPE_52) {
 522                 if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
 523                         mmc->card_caps |= MMC_MODE_DDR_52MHz;
 524                 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
 525         } else {
 526                 mmc->card_caps |= MMC_MODE_HS;
 527         }
 528
 529         return 0;
 530 }
 531
 532 static int mmc_set_capacity(struct mmc *mmc, int part_num)
 533 {
 534         switch (part_num) {
 535         case 0:
 536                 mmc->capacity = mmc->capacity_user;
 537                 break;
 538         case 1:
 539         case 2:
 540                 mmc->capacity = mmc->capacity_boot;
 541                 break;
 542         case 3:
 543                 mmc->capacity = mmc->capacity_rpmb;
 544                 break;
 545         case 4:
 546         case 5:
 547         case 6:
 548         case 7:
 549                 mmc->capacity = mmc->capacity_gp[part_num - 4];
 550                 break;
 551         default:
 552                 return -1;
 553         }
 554
 555         mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
 556
 557         return 0;
 558 }
 559
 560 int mmc_select_hwpart(int dev_num, int hwpart)
 561 {
 562         struct mmc *mmc = find_mmc_device(dev_num);
 563         int ret;
 564
 565         if (!mmc)
 566                 return -ENODEV;
 567
 568         if (mmc->part_num == hwpart)
 569                 return 0;
 570
 571         if (mmc->part_config == MMCPART_NOAVAILABLE) {
 572                 printf("Card doesn't support part_switch\n");
 573                 return -EMEDIUMTYPE;
 574         }
 575
 576         ret = mmc_switch_part(dev_num, hwpart);
 577         if (ret)
 578                 return ret;
 579
 580         mmc->part_num = hwpart;
 581
 582         return 0;
 583 }
 584
 585
 586 int mmc_switch_part(int dev_num, unsigned int part_num)
 587 {
 588         struct mmc *mmc = find_mmc_device(dev_num);
 589         int ret;
 590
 591         if (!mmc)
 592                 return -1;
 593
 594         ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
 595                          (mmc->part_config & ~PART_ACCESS_MASK)
 596                          | (part_num & PART_ACCESS_MASK));
 597
 598         /*
 599          * Set the capacity if the switch succeeded or was intended
 600          * to return to representing the raw device.
 601          */
 602         if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0)))
 603                 ret = mmc_set_capacity(mmc, part_num);
 604
 605         return ret;
 606 }
 607
 608 int mmc_getcd(struct mmc *mmc)
 609 {
 610         int cd;
 611
 612         cd = board_mmc_getcd(mmc);
 613
 614         if (cd < 0) {
 615                 if (mmc->cfg->ops->getcd)
 616                         cd = mmc->cfg->ops->getcd(mmc);
 617                 else
 618                         cd = 1;
 619         }
 620
 621         return cd;
 622 }
 623
 624 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
 625 {
 626         struct mmc_cmd cmd;
 627         struct mmc_data data;
 628
 629         /* Switch the frequency */
 630         cmd.cmdidx = SD_CMD_SWITCH_FUNC;
 631         cmd.resp_type = MMC_RSP_R1;
 632         cmd.cmdarg = (mode << 31) | 0xffffff;
 633         cmd.cmdarg &= ~(0xf << (group * 4));
 634         cmd.cmdarg |= value << (group * 4);
 635
 636         data.dest = (char *)resp;
 637         data.blocksize = 64;
 638         data.blocks = 1;
 639         data.flags = MMC_DATA_READ;
 640
 641         return mmc_send_cmd(mmc, &cmd, &data);
 642 }
 643
 644
 645 static int sd_change_freq(struct mmc *mmc)
 646 {
 647         int err;
 648         struct mmc_cmd cmd;
 649         ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
 650         ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
 651         struct mmc_data data;
 652         int timeout;
 653
 654         mmc->card_caps = 0;
 655
 656         if (mmc_host_is_spi(mmc))
 657                 return 0;
 658
 659         /* Read the SCR to find out if this card supports higher speeds */
 660         cmd.cmdidx = MMC_CMD_APP_CMD;
 661         cmd.resp_type = MMC_RSP_R1;
 662         cmd.cmdarg = mmc->rca << 16;
 663
 664         err = mmc_send_cmd(mmc, &cmd, NULL);
 665
 666         if (err)
 667                 return err;
 668
 669         cmd.cmdidx = SD_CMD_APP_SEND_SCR;
 670         cmd.resp_type = MMC_RSP_R1;
 671         cmd.cmdarg = 0;
 672
 673         timeout = 3;
 674
 675 retry_scr:
 676         data.dest = (char *)scr;
 677         data.blocksize = 8;
 678         data.blocks = 1;
 679         data.flags = MMC_DATA_READ;
 680
 681         err = mmc_send_cmd(mmc, &cmd, &data);
 682
 683         if (err) {
 684                 if (timeout--)
 685                         goto retry_scr;
 686
 687                 return err;
 688         }
 689
 690         mmc->scr[0] = __be32_to_cpu(scr[0]);
 691         mmc->scr[1] = __be32_to_cpu(scr[1]);
 692
 693         switch ((mmc->scr[0] >> 24) & 0xf) {
 694                 case 0:
 695                         mmc->version = SD_VERSION_1_0;
 696                         break;
 697                 case 1:
 698                         mmc->version = SD_VERSION_1_10;
 699                         break;
 700                 case 2:
 701                         mmc->version = SD_VERSION_2;
 702                         if ((mmc->scr[0] >> 15) & 0x1)
 703                                 mmc->version = SD_VERSION_3;
 704                         break;
 705                 default:
 706                         mmc->version = SD_VERSION_1_0;
 707                         break;
 708         }
 709
 710         if (mmc->scr[0] & SD_DATA_4BIT)
 711                 mmc->card_caps |= MMC_MODE_4BIT;
 712
 713         /* Version 1.0 doesn't support switching */
 714         if (mmc->version == SD_VERSION_1_0)
 715                 return 0;
 716
 717         timeout = 4;
 718         while (timeout--) {
 719                 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
 720                                 (u8 *)switch_status);
 721
 722                 if (err)
 723                         return err;
 724
 725                 /* The high-speed function is busy.  Try again */
 726                 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
 727                         break;
 728         }
 729
 730         /* If high-speed isn't supported, we return */
 731         if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
 732                 return 0;
 733
 734         /*
 735          * If the host doesn't support SD_HIGHSPEED, do not switch card to
 736          * HIGHSPEED mode even if the card support SD_HIGHSPPED.
 737          * This can avoid furthur problem when the card runs in different
 738          * mode between the host.
 739          */
 740         if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
 741                 (mmc->cfg->host_caps & MMC_MODE_HS)))
 742                 return 0;
 743
 744         err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
 745
 746         if (err)
 747                 return err;
 748
 749         if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
 750                 mmc->card_caps |= MMC_MODE_HS;
 751
 752         return 0;
 753 }
 754
 755 /* frequency bases */
 756 /* divided by 10 to be nice to platforms without floating point */
 757 static const int fbase[] = {
 758         10000,
 759         100000,
 760         1000000,
 761         10000000,
 762 };
 763
 764 /* Multiplier values for TRAN_SPEED.  Multiplied by 10 to be nice
 765  * to platforms without floating point.
 766  */
 767 static const int multipliers[] = {
 768         0,      /* reserved */
 769         10,
 770         12,
 771         13,
 772         15,
 773         20,
 774         25,
 775         30,
 776         35,
 777         40,
 778         45,
 779         50,
 780         55,
 781         60,
 782         70,
 783         80,
 784 };
 785
 786 static void mmc_set_ios(struct mmc *mmc)
 787 {
 788         if (mmc->cfg->ops->set_ios)
 789                 mmc->cfg->ops->set_ios(mmc);
 790 }
 791
 792 void mmc_set_clock(struct mmc *mmc, uint clock)
 793 {
 794         if (clock > mmc->cfg->f_max)
 795                 clock = mmc->cfg->f_max;
 796
 797         if (clock < mmc->cfg->f_min)
 798                 clock = mmc->cfg->f_min;
 799
 800         mmc->clock = clock;
 801
 802         mmc_set_ios(mmc);
 803 }
 804
 805 static void mmc_set_bus_width(struct mmc *mmc, uint width)
 806 {
 807         mmc->bus_width = width;
 808
 809         mmc_set_ios(mmc);
 810 }
 811
 812 static int mmc_startup(struct mmc *mmc)
 813 {
 814         int err, i;
 815         uint mult, freq;
 816         u64 cmult, csize, capacity;
 817         struct mmc_cmd cmd;
 818         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 819         ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
 820         int timeout = 1000;
 821         bool has_parts = false;
 822
 823 #ifdef CONFIG_MMC_SPI_CRC_ON
 824         if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
 825                 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
 826                 cmd.resp_type = MMC_RSP_R1;
 827                 cmd.cmdarg = 1;
 828                 err = mmc_send_cmd(mmc, &cmd, NULL);
 829
 830                 if (err)
 831                         return err;
 832         }
 833 #endif
 834
 835         /* Put the Card in Identify Mode */
 836         cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
 837                 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
 838         cmd.resp_type = MMC_RSP_R2;
 839         cmd.cmdarg = 0;
 840
 841         err = mmc_send_cmd(mmc, &cmd, NULL);
 842
 843         if (err)
 844                 return err;
 845
 846         memcpy(mmc->cid, cmd.response, 16);
 847
 848         /*
 849          * For MMC cards, set the Relative Address.
 850          * For SD cards, get the Relatvie Address.
 851          * This also puts the cards into Standby State
 852          */
 853         if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
 854                 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
 855                 cmd.cmdarg = mmc->rca << 16;
 856                 cmd.resp_type = MMC_RSP_R6;
 857
 858                 err = mmc_send_cmd(mmc, &cmd, NULL);
 859
 860                 if (err)
 861                         return err;
 862
 863                 if (IS_SD(mmc))
 864                         mmc->rca = (cmd.response[0] >> 16) & 0xffff;
 865         }
 866
 867         /* Get the Card-Specific Data */
 868         cmd.cmdidx = MMC_CMD_SEND_CSD;
 869         cmd.resp_type = MMC_RSP_R2;
 870         cmd.cmdarg = mmc->rca << 16;
 871
 872         err = mmc_send_cmd(mmc, &cmd, NULL);
 873
 874         /* Waiting for the ready status */
 875         mmc_send_status(mmc, timeout);
 876
 877         if (err)
 878                 return err;
 879
 880         mmc->csd[0] = cmd.response[0];
 881         mmc->csd[1] = cmd.response[1];
 882         mmc->csd[2] = cmd.response[2];
 883         mmc->csd[3] = cmd.response[3];
 884
 885         if (mmc->version == MMC_VERSION_UNKNOWN) {
 886                 int version = (cmd.response[0] >> 26) & 0xf;
 887
 888                 switch (version) {
 889                         case 0:
 890                                 mmc->version = MMC_VERSION_1_2;
 891                                 break;
 892                         case 1:
 893                                 mmc->version = MMC_VERSION_1_4;
 894                                 break;
 895                         case 2:
 896                                 mmc->version = MMC_VERSION_2_2;
 897                                 break;
 898                         case 3:
 899                                 mmc->version = MMC_VERSION_3;
 900                                 break;
 901                         case 4:
 902                                 mmc->version = MMC_VERSION_4;
 903                                 break;
 904                         default:
 905                                 mmc->version = MMC_VERSION_1_2;
 906                                 break;
 907                 }
 908         }
 909
 910         /* divide frequency by 10, since the mults are 10x bigger */
 911         freq = fbase[(cmd.response[0] & 0x7)];
 912         mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
 913
 914         mmc->tran_speed = freq * mult;
 915
 916         mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
 917         mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
 918
 919         if (IS_SD(mmc))
 920                 mmc->write_bl_len = mmc->read_bl_len;
 921         else
 922                 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
 923
 924         if (mmc->high_capacity) {
 925                 csize = (mmc->csd[1] & 0x3f) << 16
 926                         | (mmc->csd[2] & 0xffff0000) >> 16;
 927                 cmult = 8;
 928         } else {
 929                 csize = (mmc->csd[1] & 0x3ff) << 2
 930                         | (mmc->csd[2] & 0xc0000000) >> 30;
 931                 cmult = (mmc->csd[2] & 0x00038000) >> 15;
 932         }
 933
 934         mmc->capacity_user = (csize + 1) << (cmult + 2);
 935         mmc->capacity_user *= mmc->read_bl_len;
 936         mmc->capacity_boot = 0;
 937         mmc->capacity_rpmb = 0;
 938         for (i = 0; i < 4; i++)
 939                 mmc->capacity_gp[i] = 0;
 940
 941         if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
 942                 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
 943
 944         if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
 945                 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
 946
 947         if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
 948                 cmd.cmdidx = MMC_CMD_SET_DSR;
 949                 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
 950                 cmd.resp_type = MMC_RSP_NONE;
 951                 if (mmc_send_cmd(mmc, &cmd, NULL))
 952                         printf("MMC: SET_DSR failed\n");
 953         }
 954
 955         /* Select the card, and put it into Transfer Mode */
 956         if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
 957                 cmd.cmdidx = MMC_CMD_SELECT_CARD;
 958                 cmd.resp_type = MMC_RSP_R1;
 959                 cmd.cmdarg = mmc->rca << 16;
 960                 err = mmc_send_cmd(mmc, &cmd, NULL);
 961
 962                 if (err)
 963                         return err;
 964         }
 965
 966         /*
 967          * For SD, its erase group is always one sector
 968          */
 969         mmc->erase_grp_size = 1;
 970         mmc->part_config = MMCPART_NOAVAILABLE;
 971         if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
 972                 /* check  ext_csd version and capacity */
 973                 err = mmc_send_ext_csd(mmc, ext_csd);
 974                 if (!err && (ext_csd[EXT_CSD_REV] >= 2)) {
 975                         /*
 976                          * According to the JEDEC Standard, the value of
 977                          * ext_csd's capacity is valid if the value is more
 978                          * than 2GB
 979                          */
 980                         capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
 981                                         | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
 982                                         | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
 983                                         | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
 984                         capacity *= MMC_MAX_BLOCK_LEN;
 985                         if ((capacity >> 20) > 2 * 1024)
 986                                 mmc->capacity_user = capacity;
 987                 }
 988
 989                 switch (ext_csd[EXT_CSD_REV]) {
 990                 case 1:
 991                         mmc->version = MMC_VERSION_4_1;
 992                         break;
 993                 case 2:
 994                         mmc->version = MMC_VERSION_4_2;
 995                         break;
 996                 case 3:
 997                         mmc->version = MMC_VERSION_4_3;
 998                         break;
 999                 case 5:
1000                         mmc->version = MMC_VERSION_4_41;
1001                         break;
1002                 case 6:
1003                         mmc->version = MMC_VERSION_4_5;
1004                         break;
1005                 case 7:
1006                         mmc->version = MMC_VERSION_5_0;
1007                         break;
1008                 }
1009
1010                 /* store the partition info of emmc */
1011                 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
1012                 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1013                     ext_csd[EXT_CSD_BOOT_MULT])
1014                         mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1015                 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)
1016                         mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
1017
1018                 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1019
1020                 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1021
1022                 for (i = 0; i < 4; i++) {
1023                         int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1024                         mmc->capacity_gp[i] = (ext_csd[idx + 2] << 16) +
1025                                 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1026                         mmc->capacity_gp[i] *=
1027                                 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1028                         mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1029                         if (mmc->capacity_gp[i])
1030                                 has_parts = true;
1031                 }
1032
1033                 /*
1034                  * Host needs to enable ERASE_GRP_DEF bit if device is
1035                  * partitioned. This bit will be lost every time after a reset
1036                  * or power off. This will affect erase size.
1037                  */
1038                 if (ext_csd[EXT_CSD_PARTITION_SETTING] &
1039                     EXT_CSD_PARTITION_SETTING_COMPLETED)
1040                         has_parts = true;
1041                 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1042                     (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB))
1043                         has_parts = true;
1044                 if (has_parts) {
1045                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1046                                 EXT_CSD_ERASE_GROUP_DEF, 1);
1047
1048                         if (err)
1049                                 return err;
1050                         else
1051                                 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1052
1053                         /* Read out group size from ext_csd */
1054                         mmc->erase_grp_size =
1055                                 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
1056                                         MMC_MAX_BLOCK_LEN * 1024;
1057                         /*
1058                          * if high capacity and partition setting completed
1059                          * SEC_COUNT is valid even if it is smaller than 2 GiB
1060                          * JEDEC Standard JESD84-B45, 6.2.4
1061                          */
1062                         if (mmc->high_capacity &&
1063                             (ext_csd[EXT_CSD_PARTITION_SETTING] &
1064                              EXT_CSD_PARTITION_SETTING_COMPLETED)) {
1065                                 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
1066                                         (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
1067                                         (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
1068                                         (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1069                                 capacity *= MMC_MAX_BLOCK_LEN;
1070                                 mmc->capacity_user = capacity;
1071                         }
1072                 } else {
1073                         /* Calculate the group size from the csd value. */
1074                         int erase_gsz, erase_gmul;
1075                         erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1076                         erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1077                         mmc->erase_grp_size = (erase_gsz + 1)
1078                                 * (erase_gmul + 1);
1079                 }
1080         }
1081
1082         err = mmc_set_capacity(mmc, mmc->part_num);
1083         if (err)
1084                 return err;
1085
1086         if (IS_SD(mmc))
1087                 err = sd_change_freq(mmc);
1088         else
1089                 err = mmc_change_freq(mmc);
1090
1091         if (err)
1092                 return err;
1093
1094         /* Restrict card's capabilities by what the host can do */
1095         mmc->card_caps &= mmc->cfg->host_caps;
1096
1097         if (IS_SD(mmc)) {
1098                 if (mmc->card_caps & MMC_MODE_4BIT) {
1099                         cmd.cmdidx = MMC_CMD_APP_CMD;
1100                         cmd.resp_type = MMC_RSP_R1;
1101                         cmd.cmdarg = mmc->rca << 16;
1102
1103                         err = mmc_send_cmd(mmc, &cmd, NULL);
1104                         if (err)
1105                                 return err;
1106
1107                         cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1108                         cmd.resp_type = MMC_RSP_R1;
1109                         cmd.cmdarg = 2;
1110                         err = mmc_send_cmd(mmc, &cmd, NULL);
1111                         if (err)
1112                                 return err;
1113
1114                         mmc_set_bus_width(mmc, 4);
1115                 }
1116
1117                 if (mmc->card_caps & MMC_MODE_HS)
1118                         mmc->tran_speed = 50000000;
1119                 else
1120                         mmc->tran_speed = 25000000;
1121         } else {
1122                 int idx;
1123
1124                 /* An array of possible bus widths in order of preference */
1125                 static unsigned ext_csd_bits[] = {
1126                         EXT_CSD_DDR_BUS_WIDTH_8,
1127                         EXT_CSD_DDR_BUS_WIDTH_4,
1128                         EXT_CSD_BUS_WIDTH_8,
1129                         EXT_CSD_BUS_WIDTH_4,
1130                         EXT_CSD_BUS_WIDTH_1,
1131                 };
1132
1133                 /* An array to map CSD bus widths to host cap bits */
1134                 static unsigned ext_to_hostcaps[] = {
1135                         [EXT_CSD_DDR_BUS_WIDTH_4] =
1136                                 MMC_MODE_DDR_52MHz | MMC_MODE_4BIT,
1137                         [EXT_CSD_DDR_BUS_WIDTH_8] =
1138                                 MMC_MODE_DDR_52MHz | MMC_MODE_8BIT,
1139                         [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1140                         [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1141                 };
1142
1143                 /* An array to map chosen bus width to an integer */
1144                 static unsigned widths[] = {
1145                         8, 4, 8, 4, 1,
1146                 };
1147
1148                 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1149                         unsigned int extw = ext_csd_bits[idx];
1150                         unsigned int caps = ext_to_hostcaps[extw];
1151
1152                         /*
1153                          * Check to make sure the card and controller support
1154                          * these capabilities
1155                          */
1156                         if ((mmc->card_caps & caps) != caps)
1157                                 continue;
1158
1159                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1160                                         EXT_CSD_BUS_WIDTH, extw);
1161
1162                         if (err)
1163                                 continue;
1164
1165                         mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0;
1166                         mmc_set_bus_width(mmc, widths[idx]);
1167
1168                         err = mmc_send_ext_csd(mmc, test_csd);
1169
1170                         if (err)
1171                                 continue;
1172
1173                         /* Only compare read only fields */
1174                         if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT]
1175                                 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] &&
1176                             ext_csd[EXT_CSD_HC_WP_GRP_SIZE]
1177                                 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] &&
1178                             ext_csd[EXT_CSD_REV]
1179                                 == test_csd[EXT_CSD_REV] &&
1180                             ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1181                                 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] &&
1182                             memcmp(&ext_csd[EXT_CSD_SEC_CNT],
1183                                    &test_csd[EXT_CSD_SEC_CNT], 4) == 0)
1184                                 break;
1185                         else
1186                                 err = SWITCH_ERR;
1187                 }
1188
1189                 if (err)
1190                         return err;
1191
1192                 if (mmc->card_caps & MMC_MODE_HS) {
1193                         if (mmc->card_caps & MMC_MODE_HS_52MHz)
1194                                 mmc->tran_speed = 52000000;
1195                         else
1196                                 mmc->tran_speed = 26000000;
1197                 }
1198         }
1199
1200         mmc_set_clock(mmc, mmc->tran_speed);
1201
1202         /* Fix the block length for DDR mode */
1203         if (mmc->ddr_mode) {
1204                 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1205                 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1206         }
1207
1208         /* fill in device description */
1209         mmc->block_dev.lun = 0;
1210         mmc->block_dev.type = 0;
1211         mmc->block_dev.blksz = mmc->read_bl_len;
1212         mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
1213         mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
1214 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1215         sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
1216                 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1217                 (mmc->cid[3] >> 16) & 0xffff);
1218         sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1219                 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1220                 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1221                 (mmc->cid[2] >> 24) & 0xff);
1222         sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1223                 (mmc->cid[2] >> 16) & 0xf);
1224 #else
1225         mmc->block_dev.vendor[0] = 0;
1226         mmc->block_dev.product[0] = 0;
1227         mmc->block_dev.revision[0] = 0;
1228 #endif
1229 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1230         init_part(&mmc->block_dev);
1231 #endif
1232
1233         return 0;
1234 }
1235
1236 static int mmc_send_if_cond(struct mmc *mmc)
1237 {
1238         struct mmc_cmd cmd;
1239         int err;
1240
1241         cmd.cmdidx = SD_CMD_SEND_IF_COND;
1242         /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1243         cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1244         cmd.resp_type = MMC_RSP_R7;
1245
1246         err = mmc_send_cmd(mmc, &cmd, NULL);
1247
1248         if (err)
1249                 return err;
1250
1251         if ((cmd.response[0] & 0xff) != 0xaa)
1252                 return UNUSABLE_ERR;
1253         else
1254                 mmc->version = SD_VERSION_2;
1255
1256         return 0;
1257 }
1258
1259 /* not used any more */
1260 int __deprecated mmc_register(struct mmc *mmc)
1261 {
1262 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1263         printf("%s is deprecated! use mmc_create() instead.\n", __func__);
1264 #endif
1265         return -1;
1266 }
1267
1268 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
1269 {
1270         struct mmc *mmc;
1271
1272         /* quick validation */
1273         if (cfg == NULL || cfg->ops == NULL || cfg->ops->send_cmd == NULL ||
1274                         cfg->f_min == 0 || cfg->f_max == 0 || cfg->b_max == 0)
1275                 return NULL;
1276
1277         mmc = calloc(1, sizeof(*mmc));
1278         if (mmc == NULL)
1279                 return NULL;
1280
1281         mmc->cfg = cfg;
1282         mmc->priv = priv;
1283
1284         /* the following chunk was mmc_register() */
1285
1286         /* Setup dsr related values */
1287         mmc->dsr_imp = 0;
1288         mmc->dsr = 0xffffffff;
1289         /* Setup the universal parts of the block interface just once */
1290         mmc->block_dev.if_type = IF_TYPE_MMC;
1291         mmc->block_dev.dev = cur_dev_num++;
1292         mmc->block_dev.removable = 1;
1293         mmc->block_dev.block_read = mmc_bread;
1294         mmc->block_dev.block_write = mmc_bwrite;
1295         mmc->block_dev.block_erase = mmc_berase;
1296
1297         /* setup initial part type */
1298         mmc->block_dev.part_type = mmc->cfg->part_type;
1299
1300         INIT_LIST_HEAD(&mmc->link);
1301
1302         list_add_tail(&mmc->link, &mmc_devices);
1303
1304         return mmc;
1305 }
1306
1307 void mmc_destroy(struct mmc *mmc)
1308 {
1309         /* only freeing memory for now */
1310         free(mmc);
1311 }
1312
1313 #ifdef CONFIG_PARTITIONS
1314 block_dev_desc_t *mmc_get_dev(int dev)
1315 {
1316         struct mmc *mmc = find_mmc_device(dev);
1317         if (!mmc || mmc_init(mmc))
1318                 return NULL;
1319
1320         return &mmc->block_dev;
1321 }
1322 #endif
1323
1324 /* board-specific MMC power initializations. */
1325 __weak void board_mmc_power_init(void)
1326 {
1327 }
1328
1329 int mmc_start_init(struct mmc *mmc)
1330 {
1331         int err;
1332
1333         /* we pretend there's no card when init is NULL */
1334         if (mmc_getcd(mmc) == 0 || mmc->cfg->ops->init == NULL) {
1335                 mmc->has_init = 0;
1336 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1337                 printf("MMC: no card present\n");
1338 #endif
1339                 return NO_CARD_ERR;
1340         }
1341
1342         if (mmc->has_init)
1343                 return 0;
1344
1345         board_mmc_power_init();
1346
1347         /* made sure it's not NULL earlier */
1348         err = mmc->cfg->ops->init(mmc);
1349
1350         if (err)
1351                 return err;
1352
1353         mmc->ddr_mode = 0;
1354         mmc_set_bus_width(mmc, 1);
1355         mmc_set_clock(mmc, 1);
1356
1357         /* Reset the Card */
1358         err = mmc_go_idle(mmc);
1359
1360         if (err)
1361                 return err;
1362
1363         /* The internal partition reset to user partition(0) at every CMD0*/
1364         mmc->part_num = 0;
1365
1366         /* Test for SD version 2 */
1367         err = mmc_send_if_cond(mmc);
1368
1369         /* Now try to get the SD card's operating condition */
1370         err = sd_send_op_cond(mmc);
1371
1372         /* If the command timed out, we check for an MMC card */
1373         if (err == TIMEOUT) {
1374                 err = mmc_send_op_cond(mmc);
1375
1376                 if (err && err != IN_PROGRESS) {
1377 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1378                         printf("Card did not respond to voltage select!\n");
1379 #endif
1380                         return UNUSABLE_ERR;
1381                 }
1382         }
1383
1384         if (err == IN_PROGRESS)
1385                 mmc->init_in_progress = 1;
1386
1387         return err;
1388 }
1389
1390 static int mmc_complete_init(struct mmc *mmc)
1391 {
1392         int err = 0;
1393
1394         if (mmc->op_cond_pending)
1395                 err = mmc_complete_op_cond(mmc);
1396
1397         if (!err)
1398                 err = mmc_startup(mmc);
1399         if (err)
1400                 mmc->has_init = 0;
1401         else
1402                 mmc->has_init = 1;
1403         mmc->init_in_progress = 0;
1404         return err;
1405 }
1406
1407 int mmc_init(struct mmc *mmc)
1408 {
1409         int err = IN_PROGRESS;
1410         unsigned start;
1411
1412         if (mmc->has_init)
1413                 return 0;
1414
1415         start = get_timer(0);
1416
1417         if (!mmc->init_in_progress)
1418                 err = mmc_start_init(mmc);
1419
1420         if (!err || err == IN_PROGRESS)
1421                 err = mmc_complete_init(mmc);
1422         debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
1423         return err;
1424 }
1425
1426 int mmc_set_dsr(struct mmc *mmc, u16 val)
1427 {
1428         mmc->dsr = val;
1429         return 0;
1430 }
1431
1432 /* CPU-specific MMC initializations */
1433 __weak int cpu_mmc_init(bd_t *bis)
1434 {
1435         return -1;
1436 }
1437
1438 /* board-specific MMC initializations. */
1439 __weak int board_mmc_init(bd_t *bis)
1440 {
1441         return -1;
1442 }
1443
1444 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1445
1446 void print_mmc_devices(char separator)
1447 {
1448         struct mmc *m;
1449         struct list_head *entry;
1450
1451         list_for_each(entry, &mmc_devices) {
1452                 m = list_entry(entry, struct mmc, link);
1453
1454                 printf("%s: %d", m->cfg->name, m->block_dev.dev);
1455
1456                 if (entry->next != &mmc_devices) {
1457                         printf("%c", separator);
1458                         if (separator != '\n')
1459                                 puts (" ");
1460                 }
1461         }
1462
1463         printf("\n");
1464 }
1465
1466 #else
1467 void print_mmc_devices(char separator) { }
1468 #endif
1469
1470 int get_mmc_num(void)
1471 {
1472         return cur_dev_num;
1473 }
1474
1475 void mmc_set_preinit(struct mmc *mmc, int preinit)
1476 {
1477         mmc->preinit = preinit;
1478 }
1479
1480 static void do_preinit(void)
1481 {
1482         struct mmc *m;
1483         struct list_head *entry;
1484
1485         list_for_each(entry, &mmc_devices) {
1486                 m = list_entry(entry, struct mmc, link);
1487
1488                 if (m->preinit)
1489                         mmc_start_init(m);
1490         }
1491 }
1492
1493
1494 int mmc_initialize(bd_t *bis)
1495 {
1496         INIT_LIST_HEAD (&mmc_devices);
1497         cur_dev_num = 0;
1498
1499         if (board_mmc_init(bis) < 0)
1500                 cpu_mmc_init(bis);
1501
1502 #ifndef CONFIG_SPL_BUILD
1503         print_mmc_devices(',');
1504 #endif
1505
1506         do_preinit();
1507         return 0;
1508 }
1509
1510 #ifdef CONFIG_SUPPORT_EMMC_BOOT
1511 /*
1512  * This function changes the size of boot partition and the size of rpmb
1513  * partition present on EMMC devices.
1514  *
1515  * Input Parameters:
1516  * struct *mmc: pointer for the mmc device strcuture
1517  * bootsize: size of boot partition
1518  * rpmbsize: size of rpmb partition
1519  *
1520  * Returns 0 on success.
1521  */
1522
1523 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
1524                                 unsigned long rpmbsize)
1525 {
1526         int err;
1527         struct mmc_cmd cmd;
1528
1529         /* Only use this command for raw EMMC moviNAND. Enter backdoor mode */
1530         cmd.cmdidx = MMC_CMD_RES_MAN;
1531         cmd.resp_type = MMC_RSP_R1b;
1532         cmd.cmdarg = MMC_CMD62_ARG1;
1533
1534         err = mmc_send_cmd(mmc, &cmd, NULL);
1535         if (err) {
1536                 debug("mmc_boot_partition_size_change: Error1 = %d\n", err);
1537                 return err;
1538         }
1539
1540         /* Boot partition changing mode */
1541         cmd.cmdidx = MMC_CMD_RES_MAN;
1542         cmd.resp_type = MMC_RSP_R1b;
1543         cmd.cmdarg = MMC_CMD62_ARG2;
1544
1545         err = mmc_send_cmd(mmc, &cmd, NULL);
1546         if (err) {
1547                 debug("mmc_boot_partition_size_change: Error2 = %d\n", err);
1548                 return err;
1549         }
1550         /* boot partition size is multiple of 128KB */
1551         bootsize = (bootsize * 1024) / 128;
1552
1553         /* Arg: boot partition size */
1554         cmd.cmdidx = MMC_CMD_RES_MAN;
1555         cmd.resp_type = MMC_RSP_R1b;
1556         cmd.cmdarg = bootsize;
1557
1558         err = mmc_send_cmd(mmc, &cmd, NULL);
1559         if (err) {
1560                 debug("mmc_boot_partition_size_change: Error3 = %d\n", err);
1561                 return err;
1562         }
1563         /* RPMB partition size is multiple of 128KB */
1564         rpmbsize = (rpmbsize * 1024) / 128;
1565         /* Arg: RPMB partition size */
1566         cmd.cmdidx = MMC_CMD_RES_MAN;
1567         cmd.resp_type = MMC_RSP_R1b;
1568         cmd.cmdarg = rpmbsize;
1569
1570         err = mmc_send_cmd(mmc, &cmd, NULL);
1571         if (err) {
1572                 debug("mmc_boot_partition_size_change: Error4 = %d\n", err);
1573                 return err;
1574         }
1575         return 0;
1576 }
1577
1578 /*
1579  * Modify EXT_CSD[177] which is BOOT_BUS_WIDTH
1580  * based on the passed in values for BOOT_BUS_WIDTH, RESET_BOOT_BUS_WIDTH
1581  * and BOOT_MODE.
1582  *
1583  * Returns 0 on success.
1584  */
1585 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode)
1586 {
1587         int err;
1588
1589         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_BUS_WIDTH,
1590                          EXT_CSD_BOOT_BUS_WIDTH_MODE(mode) |
1591                          EXT_CSD_BOOT_BUS_WIDTH_RESET(reset) |
1592                          EXT_CSD_BOOT_BUS_WIDTH_WIDTH(width));
1593
1594         if (err)
1595                 return err;
1596         return 0;
1597 }
1598
1599 /*
1600  * Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
1601  * based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
1602  * PARTITION_ACCESS.
1603  *
1604  * Returns 0 on success.
1605  */
1606 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
1607 {
1608         int err;
1609
1610         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
1611                          EXT_CSD_BOOT_ACK(ack) |
1612                          EXT_CSD_BOOT_PART_NUM(part_num) |
1613                          EXT_CSD_PARTITION_ACCESS(access));
1614
1615         if (err)
1616                 return err;
1617         return 0;
1618 }
1619
1620 /*
1621  * Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
1622  * for enable.  Note that this is a write-once field for non-zero values.
1623  *
1624  * Returns 0 on success.
1625  */
1626 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
1627 {
1628         return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,
1629                           enable);
1630 }
1631 #endif