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 <dm.h>
  14 #include <dm/device-internal.h>
  15 #include <errno.h>
  16 #include <mmc.h>
  17 #include <part.h>
  18 #include <power/regulator.h>
  19 #include <malloc.h>
  20 #include <memalign.h>
  21 #include <linux/list.h>
  22 #include <div64.h>
  23 #include "mmc_private.h"
  24
  25 static const unsigned int sd_au_size[] = {
  26         0,              SZ_16K / 512,           SZ_32K / 512,
  27         SZ_64K / 512,   SZ_128K / 512,          SZ_256K / 512,
  28         SZ_512K / 512,  SZ_1M / 512,            SZ_2M / 512,
  29         SZ_4M / 512,    SZ_8M / 512,            (SZ_8M + SZ_4M) / 512,
  30         SZ_16M / 512,   (SZ_16M + SZ_8M) / 512, SZ_32M / 512,   SZ_64M / 512,
  31 };
  32
  33 #if CONFIG_IS_ENABLED(MMC_TINY)
  34 static struct mmc mmc_static;
  35 struct mmc *find_mmc_device(int dev_num)
  36 {
  37         return &mmc_static;
  38 }
  39
  40 void mmc_do_preinit(void)
  41 {
  42         struct mmc *m = &mmc_static;
  43 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
  44         mmc_set_preinit(m, 1);
  45 #endif
  46         if (m->preinit)
  47                 mmc_start_init(m);
  48 }
  49
  50 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
  51 {
  52         return &mmc->block_dev;
  53 }
  54 #endif
  55
  56 #if !CONFIG_IS_ENABLED(DM_MMC_OPS)
  57 __weak int board_mmc_getwp(struct mmc *mmc)
  58 {
  59         return -1;
  60 }
  61
  62 int mmc_getwp(struct mmc *mmc)
  63 {
  64         int wp;
  65
  66         wp = board_mmc_getwp(mmc);
  67
  68         if (wp < 0) {
  69                 if (mmc->cfg->ops->getwp)
  70                         wp = mmc->cfg->ops->getwp(mmc);
  71                 else
  72                         wp = 0;
  73         }
  74
  75         return wp;
  76 }
  77
  78 __weak int board_mmc_getcd(struct mmc *mmc)
  79 {
  80         return -1;
  81 }
  82 #endif
  83
  84 #ifdef CONFIG_MMC_TRACE
  85 void mmmc_trace_before_send(struct mmc *mmc, struct mmc_cmd *cmd)
  86 {
  87         printf("CMD_SEND:%d\n", cmd->cmdidx);
  88         printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
  89 }
  90
  91 void mmmc_trace_after_send(struct mmc *mmc, struct mmc_cmd *cmd, int ret)
  92 {
  93         int i;
  94         u8 *ptr;
  95
  96         if (ret) {
  97                 printf("\t\tRET\t\t\t %d\n", ret);
  98         } else {
  99                 switch (cmd->resp_type) {
 100                 case MMC_RSP_NONE:
 101                         printf("\t\tMMC_RSP_NONE\n");
 102                         break;
 103                 case MMC_RSP_R1:
 104                         printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
 105                                 cmd->response[0]);
 106                         break;
 107                 case MMC_RSP_R1b:
 108                         printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
 109                                 cmd->response[0]);
 110                         break;
 111                 case MMC_RSP_R2:
 112                         printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
 113                                 cmd->response[0]);
 114                         printf("\t\t          \t\t 0x%08X \n",
 115                                 cmd->response[1]);
 116                         printf("\t\t          \t\t 0x%08X \n",
 117                                 cmd->response[2]);
 118                         printf("\t\t          \t\t 0x%08X \n",
 119                                 cmd->response[3]);
 120                         printf("\n");
 121                         printf("\t\t\t\t\tDUMPING DATA\n");
 122                         for (i = 0; i < 4; i++) {
 123                                 int j;
 124                                 printf("\t\t\t\t\t%03d - ", i*4);
 125                                 ptr = (u8 *)&cmd->response[i];
 126                                 ptr += 3;
 127                                 for (j = 0; j < 4; j++)
 128                                         printf("%02X ", *ptr--);
 129                                 printf("\n");
 130                         }
 131                         break;
 132                 case MMC_RSP_R3:
 133                         printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
 134                                 cmd->response[0]);
 135                         break;
 136                 default:
 137                         printf("\t\tERROR MMC rsp not supported\n");
 138                         break;
 139                 }
 140         }
 141 }
 142
 143 void mmc_trace_state(struct mmc *mmc, struct mmc_cmd *cmd)
 144 {
 145         int status;
 146
 147         status = (cmd->response[0] & MMC_STATUS_CURR_STATE) >> 9;
 148         printf("CURR STATE:%d\n", status);
 149 }
 150 #endif
 151
 152 #if !CONFIG_IS_ENABLED(DM_MMC_OPS)
 153 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
 154 {
 155         int ret;
 156
 157         mmmc_trace_before_send(mmc, cmd);
 158         ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
 159         mmmc_trace_after_send(mmc, cmd, ret);
 160
 161         return ret;
 162 }
 163 #endif
 164
 165 int mmc_send_status(struct mmc *mmc, int timeout)
 166 {
 167         struct mmc_cmd cmd;
 168         int err, retries = 5;
 169
 170         cmd.cmdidx = MMC_CMD_SEND_STATUS;
 171         cmd.resp_type = MMC_RSP_R1;
 172         if (!mmc_host_is_spi(mmc))
 173                 cmd.cmdarg = mmc->rca << 16;
 174
 175         while (1) {
 176                 err = mmc_send_cmd(mmc, &cmd, NULL);
 177                 if (!err) {
 178                         if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
 179                             (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
 180                              MMC_STATE_PRG)
 181                                 break;
 182                         else if (cmd.response[0] & MMC_STATUS_MASK) {
 183 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 184                                 printf("Status Error: 0x%08X\n",
 185                                         cmd.response[0]);
 186 #endif
 187                                 return -ECOMM;
 188                         }
 189                 } else if (--retries < 0)
 190                         return err;
 191
 192                 if (timeout-- <= 0)
 193                         break;
 194
 195                 udelay(1000);
 196         }
 197
 198         mmc_trace_state(mmc, &cmd);
 199         if (timeout <= 0) {
 200 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 201                 printf("Timeout waiting card ready\n");
 202 #endif
 203                 return -ETIMEDOUT;
 204         }
 205
 206         return 0;
 207 }
 208
 209 int mmc_set_blocklen(struct mmc *mmc, int len)
 210 {
 211         struct mmc_cmd cmd;
 212
 213         if (mmc->ddr_mode)
 214                 return 0;
 215
 216         cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
 217         cmd.resp_type = MMC_RSP_R1;
 218         cmd.cmdarg = len;
 219
 220         return mmc_send_cmd(mmc, &cmd, NULL);
 221 }
 222
 223 static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
 224                            lbaint_t blkcnt)
 225 {
 226         struct mmc_cmd cmd;
 227         struct mmc_data data;
 228
 229         if (blkcnt > 1)
 230                 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
 231         else
 232                 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
 233
 234         if (mmc->high_capacity)
 235                 cmd.cmdarg = start;
 236         else
 237                 cmd.cmdarg = start * mmc->read_bl_len;
 238
 239         cmd.resp_type = MMC_RSP_R1;
 240
 241         data.dest = dst;
 242         data.blocks = blkcnt;
 243         data.blocksize = mmc->read_bl_len;
 244         data.flags = MMC_DATA_READ;
 245
 246         if (mmc_send_cmd(mmc, &cmd, &data))
 247                 return 0;
 248
 249         if (blkcnt > 1) {
 250                 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
 251                 cmd.cmdarg = 0;
 252                 cmd.resp_type = MMC_RSP_R1b;
 253                 if (mmc_send_cmd(mmc, &cmd, NULL)) {
 254 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 255                         printf("mmc fail to send stop cmd\n");
 256 #endif
 257                         return 0;
 258                 }
 259         }
 260
 261         return blkcnt;
 262 }
 263
 264 #if CONFIG_IS_ENABLED(BLK)
 265 ulong mmc_bread(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *dst)
 266 #else
 267 ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
 268                 void *dst)
 269 #endif
 270 {
 271 #if CONFIG_IS_ENABLED(BLK)
 272         struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
 273 #endif
 274         int dev_num = block_dev->devnum;
 275         int err;
 276         lbaint_t cur, blocks_todo = blkcnt;
 277
 278         if (blkcnt == 0)
 279                 return 0;
 280
 281         struct mmc *mmc = find_mmc_device(dev_num);
 282         if (!mmc)
 283                 return 0;
 284
 285         if (CONFIG_IS_ENABLED(MMC_TINY))
 286                 err = mmc_switch_part(mmc, block_dev->hwpart);
 287         else
 288                 err = blk_dselect_hwpart(block_dev, block_dev->hwpart);
 289
 290         if (err < 0)
 291                 return 0;
 292
 293         if ((start + blkcnt) > block_dev->lba) {
 294 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 295                 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
 296                         start + blkcnt, block_dev->lba);
 297 #endif
 298                 return 0;
 299         }
 300
 301         if (mmc_set_blocklen(mmc, mmc->read_bl_len)) {
 302                 debug("%s: Failed to set blocklen\n", __func__);
 303                 return 0;
 304         }
 305
 306         do {
 307                 cur = (blocks_todo > mmc->cfg->b_max) ?
 308                         mmc->cfg->b_max : blocks_todo;
 309                 if (mmc_read_blocks(mmc, dst, start, cur) != cur) {
 310                         debug("%s: Failed to read blocks\n", __func__);
 311                         return 0;
 312                 }
 313                 blocks_todo -= cur;
 314                 start += cur;
 315                 dst += cur * mmc->read_bl_len;
 316         } while (blocks_todo > 0);
 317
 318         return blkcnt;
 319 }
 320
 321 static int mmc_go_idle(struct mmc *mmc)
 322 {
 323         struct mmc_cmd cmd;
 324         int err;
 325
 326         udelay(1000);
 327
 328         cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
 329         cmd.cmdarg = 0;
 330         cmd.resp_type = MMC_RSP_NONE;
 331
 332         err = mmc_send_cmd(mmc, &cmd, NULL);
 333
 334         if (err)
 335                 return err;
 336
 337         udelay(2000);
 338
 339         return 0;
 340 }
 341
 342 static int sd_send_op_cond(struct mmc *mmc)
 343 {
 344         int timeout = 1000;
 345         int err;
 346         struct mmc_cmd cmd;
 347
 348         while (1) {
 349                 cmd.cmdidx = MMC_CMD_APP_CMD;
 350                 cmd.resp_type = MMC_RSP_R1;
 351                 cmd.cmdarg = 0;
 352
 353                 err = mmc_send_cmd(mmc, &cmd, NULL);
 354
 355                 if (err)
 356                         return err;
 357
 358                 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
 359                 cmd.resp_type = MMC_RSP_R3;
 360
 361                 /*
 362                  * Most cards do not answer if some reserved bits
 363                  * in the ocr are set. However, Some controller
 364                  * can set bit 7 (reserved for low voltages), but
 365                  * how to manage low voltages SD card is not yet
 366                  * specified.
 367                  */
 368                 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
 369                         (mmc->cfg->voltages & 0xff8000);
 370
 371                 if (mmc->version == SD_VERSION_2)
 372                         cmd.cmdarg |= OCR_HCS;
 373
 374                 err = mmc_send_cmd(mmc, &cmd, NULL);
 375
 376                 if (err)
 377                         return err;
 378
 379                 if (cmd.response[0] & OCR_BUSY)
 380                         break;
 381
 382                 if (timeout-- <= 0)
 383                         return -EOPNOTSUPP;
 384
 385                 udelay(1000);
 386         }
 387
 388         if (mmc->version != SD_VERSION_2)
 389                 mmc->version = SD_VERSION_1_0;
 390
 391         if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
 392                 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
 393                 cmd.resp_type = MMC_RSP_R3;
 394                 cmd.cmdarg = 0;
 395
 396                 err = mmc_send_cmd(mmc, &cmd, NULL);
 397
 398                 if (err)
 399                         return err;
 400         }
 401
 402         mmc->ocr = cmd.response[0];
 403
 404         mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
 405         mmc->rca = 0;
 406
 407         return 0;
 408 }
 409
 410 static int mmc_send_op_cond_iter(struct mmc *mmc, int use_arg)
 411 {
 412         struct mmc_cmd cmd;
 413         int err;
 414
 415         cmd.cmdidx = MMC_CMD_SEND_OP_COND;
 416         cmd.resp_type = MMC_RSP_R3;
 417         cmd.cmdarg = 0;
 418         if (use_arg && !mmc_host_is_spi(mmc))
 419                 cmd.cmdarg = OCR_HCS |
 420                         (mmc->cfg->voltages &
 421                         (mmc->ocr & OCR_VOLTAGE_MASK)) |
 422                         (mmc->ocr & OCR_ACCESS_MODE);
 423
 424         err = mmc_send_cmd(mmc, &cmd, NULL);
 425         if (err)
 426                 return err;
 427         mmc->ocr = cmd.response[0];
 428         return 0;
 429 }
 430
 431 static int mmc_send_op_cond(struct mmc *mmc)
 432 {
 433         int err, i;
 434
 435         /* Some cards seem to need this */
 436         mmc_go_idle(mmc);
 437
 438         /* Asking to the card its capabilities */
 439         for (i = 0; i < 2; i++) {
 440                 err = mmc_send_op_cond_iter(mmc, i != 0);
 441                 if (err)
 442                         return err;
 443
 444                 /* exit if not busy (flag seems to be inverted) */
 445                 if (mmc->ocr & OCR_BUSY)
 446                         break;
 447         }
 448         mmc->op_cond_pending = 1;
 449         return 0;
 450 }
 451
 452 static int mmc_complete_op_cond(struct mmc *mmc)
 453 {
 454         struct mmc_cmd cmd;
 455         int timeout = 1000;
 456         uint start;
 457         int err;
 458
 459         mmc->op_cond_pending = 0;
 460         if (!(mmc->ocr & OCR_BUSY)) {
 461                 /* Some cards seem to need this */
 462                 mmc_go_idle(mmc);
 463
 464                 start = get_timer(0);
 465                 while (1) {
 466                         err = mmc_send_op_cond_iter(mmc, 1);
 467                         if (err)
 468                                 return err;
 469                         if (mmc->ocr & OCR_BUSY)
 470                                 break;
 471                         if (get_timer(start) > timeout)
 472                                 return -EOPNOTSUPP;
 473                         udelay(100);
 474                 }
 475         }
 476
 477         if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
 478                 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
 479                 cmd.resp_type = MMC_RSP_R3;
 480                 cmd.cmdarg = 0;
 481
 482                 err = mmc_send_cmd(mmc, &cmd, NULL);
 483
 484                 if (err)
 485                         return err;
 486
 487                 mmc->ocr = cmd.response[0];
 488         }
 489
 490         mmc->version = MMC_VERSION_UNKNOWN;
 491
 492         mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
 493         mmc->rca = 1;
 494
 495         return 0;
 496 }
 497
 498
 499 static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
 500 {
 501         struct mmc_cmd cmd;
 502         struct mmc_data data;
 503         int err;
 504
 505         /* Get the Card Status Register */
 506         cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
 507         cmd.resp_type = MMC_RSP_R1;
 508         cmd.cmdarg = 0;
 509
 510         data.dest = (char *)ext_csd;
 511         data.blocks = 1;
 512         data.blocksize = MMC_MAX_BLOCK_LEN;
 513         data.flags = MMC_DATA_READ;
 514
 515         err = mmc_send_cmd(mmc, &cmd, &data);
 516
 517         return err;
 518 }
 519
 520 int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
 521 {
 522         struct mmc_cmd cmd;
 523         int timeout = 1000;
 524         int retries = 3;
 525         int ret;
 526
 527         cmd.cmdidx = MMC_CMD_SWITCH;
 528         cmd.resp_type = MMC_RSP_R1b;
 529         cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
 530                                  (index << 16) |
 531                                  (value << 8);
 532
 533         while (retries > 0) {
 534                 ret = mmc_send_cmd(mmc, &cmd, NULL);
 535
 536                 /* Waiting for the ready status */
 537                 if (!ret) {
 538                         ret = mmc_send_status(mmc, timeout);
 539                         return ret;
 540                 }
 541
 542                 retries--;
 543         }
 544
 545         return ret;
 546
 547 }
 548
 549 static int mmc_change_freq(struct mmc *mmc)
 550 {
 551         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 552         char cardtype;
 553         int err;
 554
 555         mmc->card_caps = 0;
 556
 557         if (mmc_host_is_spi(mmc))
 558                 return 0;
 559
 560         /* Only version 4 supports high-speed */
 561         if (mmc->version < MMC_VERSION_4)
 562                 return 0;
 563
 564         mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT;
 565
 566         err = mmc_send_ext_csd(mmc, ext_csd);
 567
 568         if (err)
 569                 return err;
 570
 571         cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
 572
 573         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
 574
 575         if (err)
 576                 return err;
 577
 578         /* Now check to see that it worked */
 579         err = mmc_send_ext_csd(mmc, ext_csd);
 580
 581         if (err)
 582                 return err;
 583
 584         /* No high-speed support */
 585         if (!ext_csd[EXT_CSD_HS_TIMING])
 586                 return 0;
 587
 588         /* High Speed is set, there are two types: 52MHz and 26MHz */
 589         if (cardtype & EXT_CSD_CARD_TYPE_52) {
 590                 if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
 591                         mmc->card_caps |= MMC_MODE_DDR_52MHz;
 592                 mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
 593         } else {
 594                 mmc->card_caps |= MMC_MODE_HS;
 595         }
 596
 597         return 0;
 598 }
 599
 600 static int mmc_set_capacity(struct mmc *mmc, int part_num)
 601 {
 602         switch (part_num) {
 603         case 0:
 604                 mmc->capacity = mmc->capacity_user;
 605                 break;
 606         case 1:
 607         case 2:
 608                 mmc->capacity = mmc->capacity_boot;
 609                 break;
 610         case 3:
 611                 mmc->capacity = mmc->capacity_rpmb;
 612                 break;
 613         case 4:
 614         case 5:
 615         case 6:
 616         case 7:
 617                 mmc->capacity = mmc->capacity_gp[part_num - 4];
 618                 break;
 619         default:
 620                 return -1;
 621         }
 622
 623         mmc_get_blk_desc(mmc)->lba = lldiv(mmc->capacity, mmc->read_bl_len);
 624
 625         return 0;
 626 }
 627
 628 int mmc_switch_part(struct mmc *mmc, unsigned int part_num)
 629 {
 630         int ret;
 631
 632         ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
 633                          (mmc->part_config & ~PART_ACCESS_MASK)
 634                          | (part_num & PART_ACCESS_MASK));
 635
 636         /*
 637          * Set the capacity if the switch succeeded or was intended
 638          * to return to representing the raw device.
 639          */
 640         if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0))) {
 641                 ret = mmc_set_capacity(mmc, part_num);
 642                 mmc_get_blk_desc(mmc)->hwpart = part_num;
 643         }
 644
 645         return ret;
 646 }
 647
 648 int mmc_hwpart_config(struct mmc *mmc,
 649                       const struct mmc_hwpart_conf *conf,
 650                       enum mmc_hwpart_conf_mode mode)
 651 {
 652         u8 part_attrs = 0;
 653         u32 enh_size_mult;
 654         u32 enh_start_addr;
 655         u32 gp_size_mult[4];
 656         u32 max_enh_size_mult;
 657         u32 tot_enh_size_mult = 0;
 658         u8 wr_rel_set;
 659         int i, pidx, err;
 660         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 661
 662         if (mode < MMC_HWPART_CONF_CHECK || mode > MMC_HWPART_CONF_COMPLETE)
 663                 return -EINVAL;
 664
 665         if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) {
 666                 printf("eMMC >= 4.4 required for enhanced user data area\n");
 667                 return -EMEDIUMTYPE;
 668         }
 669
 670         if (!(mmc->part_support & PART_SUPPORT)) {
 671                 printf("Card does not support partitioning\n");
 672                 return -EMEDIUMTYPE;
 673         }
 674
 675         if (!mmc->hc_wp_grp_size) {
 676                 printf("Card does not define HC WP group size\n");
 677                 return -EMEDIUMTYPE;
 678         }
 679
 680         /* check partition alignment and total enhanced size */
 681         if (conf->user.enh_size) {
 682                 if (conf->user.enh_size % mmc->hc_wp_grp_size ||
 683                     conf->user.enh_start % mmc->hc_wp_grp_size) {
 684                         printf("User data enhanced area not HC WP group "
 685                                "size aligned\n");
 686                         return -EINVAL;
 687                 }
 688                 part_attrs |= EXT_CSD_ENH_USR;
 689                 enh_size_mult = conf->user.enh_size / mmc->hc_wp_grp_size;
 690                 if (mmc->high_capacity) {
 691                         enh_start_addr = conf->user.enh_start;
 692                 } else {
 693                         enh_start_addr = (conf->user.enh_start << 9);
 694                 }
 695         } else {
 696                 enh_size_mult = 0;
 697                 enh_start_addr = 0;
 698         }
 699         tot_enh_size_mult += enh_size_mult;
 700
 701         for (pidx = 0; pidx < 4; pidx++) {
 702                 if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) {
 703                         printf("GP%i partition not HC WP group size "
 704                                "aligned\n", pidx+1);
 705                         return -EINVAL;
 706                 }
 707                 gp_size_mult[pidx] = conf->gp_part[pidx].size / mmc->hc_wp_grp_size;
 708                 if (conf->gp_part[pidx].size && conf->gp_part[pidx].enhanced) {
 709                         part_attrs |= EXT_CSD_ENH_GP(pidx);
 710                         tot_enh_size_mult += gp_size_mult[pidx];
 711                 }
 712         }
 713
 714         if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) {
 715                 printf("Card does not support enhanced attribute\n");
 716                 return -EMEDIUMTYPE;
 717         }
 718
 719         err = mmc_send_ext_csd(mmc, ext_csd);
 720         if (err)
 721                 return err;
 722
 723         max_enh_size_mult =
 724                 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+2] << 16) +
 725                 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) +
 726                 ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT];
 727         if (tot_enh_size_mult > max_enh_size_mult) {
 728                 printf("Total enhanced size exceeds maximum (%u > %u)\n",
 729                        tot_enh_size_mult, max_enh_size_mult);
 730                 return -EMEDIUMTYPE;
 731         }
 732
 733         /* The default value of EXT_CSD_WR_REL_SET is device
 734          * dependent, the values can only be changed if the
 735          * EXT_CSD_HS_CTRL_REL bit is set. The values can be
 736          * changed only once and before partitioning is completed. */
 737         wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
 738         if (conf->user.wr_rel_change) {
 739                 if (conf->user.wr_rel_set)
 740                         wr_rel_set |= EXT_CSD_WR_DATA_REL_USR;
 741                 else
 742                         wr_rel_set &= ~EXT_CSD_WR_DATA_REL_USR;
 743         }
 744         for (pidx = 0; pidx < 4; pidx++) {
 745                 if (conf->gp_part[pidx].wr_rel_change) {
 746                         if (conf->gp_part[pidx].wr_rel_set)
 747                                 wr_rel_set |= EXT_CSD_WR_DATA_REL_GP(pidx);
 748                         else
 749                                 wr_rel_set &= ~EXT_CSD_WR_DATA_REL_GP(pidx);
 750                 }
 751         }
 752
 753         if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET] &&
 754             !(ext_csd[EXT_CSD_WR_REL_PARAM] & EXT_CSD_HS_CTRL_REL)) {
 755                 puts("Card does not support host controlled partition write "
 756                      "reliability settings\n");
 757                 return -EMEDIUMTYPE;
 758         }
 759
 760         if (ext_csd[EXT_CSD_PARTITION_SETTING] &
 761             EXT_CSD_PARTITION_SETTING_COMPLETED) {
 762                 printf("Card already partitioned\n");
 763                 return -EPERM;
 764         }
 765
 766         if (mode == MMC_HWPART_CONF_CHECK)
 767                 return 0;
 768
 769         /* Partitioning requires high-capacity size definitions */
 770         if (!(ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01)) {
 771                 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 772                                  EXT_CSD_ERASE_GROUP_DEF, 1);
 773
 774                 if (err)
 775                         return err;
 776
 777                 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
 778
 779                 /* update erase group size to be high-capacity */
 780                 mmc->erase_grp_size =
 781                         ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
 782
 783         }
 784
 785         /* all OK, write the configuration */
 786         for (i = 0; i < 4; i++) {
 787                 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 788                                  EXT_CSD_ENH_START_ADDR+i,
 789                                  (enh_start_addr >> (i*8)) & 0xFF);
 790                 if (err)
 791                         return err;
 792         }
 793         for (i = 0; i < 3; i++) {
 794                 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 795                                  EXT_CSD_ENH_SIZE_MULT+i,
 796                                  (enh_size_mult >> (i*8)) & 0xFF);
 797                 if (err)
 798                         return err;
 799         }
 800         for (pidx = 0; pidx < 4; pidx++) {
 801                 for (i = 0; i < 3; i++) {
 802                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 803                                          EXT_CSD_GP_SIZE_MULT+pidx*3+i,
 804                                          (gp_size_mult[pidx] >> (i*8)) & 0xFF);
 805                         if (err)
 806                                 return err;
 807                 }
 808         }
 809         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 810                          EXT_CSD_PARTITIONS_ATTRIBUTE, part_attrs);
 811         if (err)
 812                 return err;
 813
 814         if (mode == MMC_HWPART_CONF_SET)
 815                 return 0;
 816
 817         /* The WR_REL_SET is a write-once register but shall be
 818          * written before setting PART_SETTING_COMPLETED. As it is
 819          * write-once we can only write it when completing the
 820          * partitioning. */
 821         if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET]) {
 822                 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 823                                  EXT_CSD_WR_REL_SET, wr_rel_set);
 824                 if (err)
 825                         return err;
 826         }
 827
 828         /* Setting PART_SETTING_COMPLETED confirms the partition
 829          * configuration but it only becomes effective after power
 830          * cycle, so we do not adjust the partition related settings
 831          * in the mmc struct. */
 832
 833         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
 834                          EXT_CSD_PARTITION_SETTING,
 835                          EXT_CSD_PARTITION_SETTING_COMPLETED);
 836         if (err)
 837                 return err;
 838
 839         return 0;
 840 }
 841
 842 #if !CONFIG_IS_ENABLED(DM_MMC_OPS)
 843 int mmc_getcd(struct mmc *mmc)
 844 {
 845         int cd;
 846
 847         cd = board_mmc_getcd(mmc);
 848
 849         if (cd < 0) {
 850                 if (mmc->cfg->ops->getcd)
 851                         cd = mmc->cfg->ops->getcd(mmc);
 852                 else
 853                         cd = 1;
 854         }
 855
 856         return cd;
 857 }
 858 #endif
 859
 860 static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
 861 {
 862         struct mmc_cmd cmd;
 863         struct mmc_data data;
 864
 865         /* Switch the frequency */
 866         cmd.cmdidx = SD_CMD_SWITCH_FUNC;
 867         cmd.resp_type = MMC_RSP_R1;
 868         cmd.cmdarg = (mode << 31) | 0xffffff;
 869         cmd.cmdarg &= ~(0xf << (group * 4));
 870         cmd.cmdarg |= value << (group * 4);
 871
 872         data.dest = (char *)resp;
 873         data.blocksize = 64;
 874         data.blocks = 1;
 875         data.flags = MMC_DATA_READ;
 876
 877         return mmc_send_cmd(mmc, &cmd, &data);
 878 }
 879
 880
 881 static int sd_change_freq(struct mmc *mmc)
 882 {
 883         int err;
 884         struct mmc_cmd cmd;
 885         ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2);
 886         ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
 887         struct mmc_data data;
 888         int timeout;
 889
 890         mmc->card_caps = 0;
 891
 892         if (mmc_host_is_spi(mmc))
 893                 return 0;
 894
 895         /* Read the SCR to find out if this card supports higher speeds */
 896         cmd.cmdidx = MMC_CMD_APP_CMD;
 897         cmd.resp_type = MMC_RSP_R1;
 898         cmd.cmdarg = mmc->rca << 16;
 899
 900         err = mmc_send_cmd(mmc, &cmd, NULL);
 901
 902         if (err)
 903                 return err;
 904
 905         cmd.cmdidx = SD_CMD_APP_SEND_SCR;
 906         cmd.resp_type = MMC_RSP_R1;
 907         cmd.cmdarg = 0;
 908
 909         timeout = 3;
 910
 911 retry_scr:
 912         data.dest = (char *)scr;
 913         data.blocksize = 8;
 914         data.blocks = 1;
 915         data.flags = MMC_DATA_READ;
 916
 917         err = mmc_send_cmd(mmc, &cmd, &data);
 918
 919         if (err) {
 920                 if (timeout--)
 921                         goto retry_scr;
 922
 923                 return err;
 924         }
 925
 926         mmc->scr[0] = __be32_to_cpu(scr[0]);
 927         mmc->scr[1] = __be32_to_cpu(scr[1]);
 928
 929         switch ((mmc->scr[0] >> 24) & 0xf) {
 930         case 0:
 931                 mmc->version = SD_VERSION_1_0;
 932                 break;
 933         case 1:
 934                 mmc->version = SD_VERSION_1_10;
 935                 break;
 936         case 2:
 937                 mmc->version = SD_VERSION_2;
 938                 if ((mmc->scr[0] >> 15) & 0x1)
 939                         mmc->version = SD_VERSION_3;
 940                 break;
 941         default:
 942                 mmc->version = SD_VERSION_1_0;
 943                 break;
 944         }
 945
 946         if (mmc->scr[0] & SD_DATA_4BIT)
 947                 mmc->card_caps |= MMC_MODE_4BIT;
 948
 949         /* Version 1.0 doesn't support switching */
 950         if (mmc->version == SD_VERSION_1_0)
 951                 return 0;
 952
 953         timeout = 4;
 954         while (timeout--) {
 955                 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
 956                                 (u8 *)switch_status);
 957
 958                 if (err)
 959                         return err;
 960
 961                 /* The high-speed function is busy.  Try again */
 962                 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
 963                         break;
 964         }
 965
 966         /* If high-speed isn't supported, we return */
 967         if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
 968                 return 0;
 969
 970         /*
 971          * If the host doesn't support SD_HIGHSPEED, do not switch card to
 972          * HIGHSPEED mode even if the card support SD_HIGHSPPED.
 973          * This can avoid furthur problem when the card runs in different
 974          * mode between the host.
 975          */
 976         if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
 977                 (mmc->cfg->host_caps & MMC_MODE_HS)))
 978                 return 0;
 979
 980         err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
 981
 982         if (err)
 983                 return err;
 984
 985         if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
 986                 mmc->card_caps |= MMC_MODE_HS;
 987
 988         return 0;
 989 }
 990
 991 static int sd_read_ssr(struct mmc *mmc)
 992 {
 993         int err, i;
 994         struct mmc_cmd cmd;
 995         ALLOC_CACHE_ALIGN_BUFFER(uint, ssr, 16);
 996         struct mmc_data data;
 997         int timeout = 3;
 998         unsigned int au, eo, et, es;
 999
1000         cmd.cmdidx = MMC_CMD_APP_CMD;
1001         cmd.resp_type = MMC_RSP_R1;
1002         cmd.cmdarg = mmc->rca << 16;
1003
1004         err = mmc_send_cmd(mmc, &cmd, NULL);
1005         if (err)
1006                 return err;
1007
1008         cmd.cmdidx = SD_CMD_APP_SD_STATUS;
1009         cmd.resp_type = MMC_RSP_R1;
1010         cmd.cmdarg = 0;
1011
1012 retry_ssr:
1013         data.dest = (char *)ssr;
1014         data.blocksize = 64;
1015         data.blocks = 1;
1016         data.flags = MMC_DATA_READ;
1017
1018         err = mmc_send_cmd(mmc, &cmd, &data);
1019         if (err) {
1020                 if (timeout--)
1021                         goto retry_ssr;
1022
1023                 return err;
1024         }
1025
1026         for (i = 0; i < 16; i++)
1027                 ssr[i] = be32_to_cpu(ssr[i]);
1028
1029         au = (ssr[2] >> 12) & 0xF;
1030         if ((au <= 9) || (mmc->version == SD_VERSION_3)) {
1031                 mmc->ssr.au = sd_au_size[au];
1032                 es = (ssr[3] >> 24) & 0xFF;
1033                 es |= (ssr[2] & 0xFF) << 8;
1034                 et = (ssr[3] >> 18) & 0x3F;
1035                 if (es && et) {
1036                         eo = (ssr[3] >> 16) & 0x3;
1037                         mmc->ssr.erase_timeout = (et * 1000) / es;
1038                         mmc->ssr.erase_offset = eo * 1000;
1039                 }
1040         } else {
1041                 debug("Invalid Allocation Unit Size.\n");
1042         }
1043
1044         return 0;
1045 }
1046
1047 /* frequency bases */
1048 /* divided by 10 to be nice to platforms without floating point */
1049 static const int fbase[] = {
1050         10000,
1051         100000,
1052         1000000,
1053         10000000,
1054 };
1055
1056 /* Multiplier values for TRAN_SPEED.  Multiplied by 10 to be nice
1057  * to platforms without floating point.
1058  */
1059 static const u8 multipliers[] = {
1060         0,      /* reserved */
1061         10,
1062         12,
1063         13,
1064         15,
1065         20,
1066         25,
1067         30,
1068         35,
1069         40,
1070         45,
1071         50,
1072         55,
1073         60,
1074         70,
1075         80,
1076 };
1077
1078 #if !CONFIG_IS_ENABLED(DM_MMC_OPS)
1079 static void mmc_set_ios(struct mmc *mmc)
1080 {
1081         if (mmc->cfg->ops->set_ios)
1082                 mmc->cfg->ops->set_ios(mmc);
1083 }
1084 #endif
1085
1086 void mmc_set_clock(struct mmc *mmc, uint clock)
1087 {
1088         if (clock > mmc->cfg->f_max)
1089                 clock = mmc->cfg->f_max;
1090
1091         if (clock < mmc->cfg->f_min)
1092                 clock = mmc->cfg->f_min;
1093
1094         mmc->clock = clock;
1095
1096         mmc_set_ios(mmc);
1097 }
1098
1099 static void mmc_set_bus_width(struct mmc *mmc, uint width)
1100 {
1101         mmc->bus_width = width;
1102
1103         mmc_set_ios(mmc);
1104 }
1105
1106 static int mmc_startup(struct mmc *mmc)
1107 {
1108         int err, i;
1109         uint mult, freq;
1110         u64 cmult, csize, capacity;
1111         struct mmc_cmd cmd;
1112         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
1113         ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
1114         bool has_parts = false;
1115         bool part_completed;
1116         struct blk_desc *bdesc;
1117
1118 #ifdef CONFIG_MMC_SPI_CRC_ON
1119         if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
1120                 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
1121                 cmd.resp_type = MMC_RSP_R1;
1122                 cmd.cmdarg = 1;
1123                 err = mmc_send_cmd(mmc, &cmd, NULL);
1124
1125                 if (err)
1126                         return err;
1127         }
1128 #endif
1129
1130         /* Put the Card in Identify Mode */
1131         cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
1132                 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
1133         cmd.resp_type = MMC_RSP_R2;
1134         cmd.cmdarg = 0;
1135
1136         err = mmc_send_cmd(mmc, &cmd, NULL);
1137
1138         if (err)
1139                 return err;
1140
1141         memcpy(mmc->cid, cmd.response, 16);
1142
1143         /*
1144          * For MMC cards, set the Relative Address.
1145          * For SD cards, get the Relatvie Address.
1146          * This also puts the cards into Standby State
1147          */
1148         if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1149                 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
1150                 cmd.cmdarg = mmc->rca << 16;
1151                 cmd.resp_type = MMC_RSP_R6;
1152
1153                 err = mmc_send_cmd(mmc, &cmd, NULL);
1154
1155                 if (err)
1156                         return err;
1157
1158                 if (IS_SD(mmc))
1159                         mmc->rca = (cmd.response[0] >> 16) & 0xffff;
1160         }
1161
1162         /* Get the Card-Specific Data */
1163         cmd.cmdidx = MMC_CMD_SEND_CSD;
1164         cmd.resp_type = MMC_RSP_R2;
1165         cmd.cmdarg = mmc->rca << 16;
1166
1167         err = mmc_send_cmd(mmc, &cmd, NULL);
1168
1169         if (err)
1170                 return err;
1171
1172         mmc->csd[0] = cmd.response[0];
1173         mmc->csd[1] = cmd.response[1];
1174         mmc->csd[2] = cmd.response[2];
1175         mmc->csd[3] = cmd.response[3];
1176
1177         if (mmc->version == MMC_VERSION_UNKNOWN) {
1178                 int version = (cmd.response[0] >> 26) & 0xf;
1179
1180                 switch (version) {
1181                 case 0:
1182                         mmc->version = MMC_VERSION_1_2;
1183                         break;
1184                 case 1:
1185                         mmc->version = MMC_VERSION_1_4;
1186                         break;
1187                 case 2:
1188                         mmc->version = MMC_VERSION_2_2;
1189                         break;
1190                 case 3:
1191                         mmc->version = MMC_VERSION_3;
1192                         break;
1193                 case 4:
1194                         mmc->version = MMC_VERSION_4;
1195                         break;
1196                 default:
1197                         mmc->version = MMC_VERSION_1_2;
1198                         break;
1199                 }
1200         }
1201
1202         /* divide frequency by 10, since the mults are 10x bigger */
1203         freq = fbase[(cmd.response[0] & 0x7)];
1204         mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
1205
1206         mmc->tran_speed = freq * mult;
1207
1208         mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
1209         mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
1210
1211         if (IS_SD(mmc))
1212                 mmc->write_bl_len = mmc->read_bl_len;
1213         else
1214                 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
1215
1216         if (mmc->high_capacity) {
1217                 csize = (mmc->csd[1] & 0x3f) << 16
1218                         | (mmc->csd[2] & 0xffff0000) >> 16;
1219                 cmult = 8;
1220         } else {
1221                 csize = (mmc->csd[1] & 0x3ff) << 2
1222                         | (mmc->csd[2] & 0xc0000000) >> 30;
1223                 cmult = (mmc->csd[2] & 0x00038000) >> 15;
1224         }
1225
1226         mmc->capacity_user = (csize + 1) << (cmult + 2);
1227         mmc->capacity_user *= mmc->read_bl_len;
1228         mmc->capacity_boot = 0;
1229         mmc->capacity_rpmb = 0;
1230         for (i = 0; i < 4; i++)
1231                 mmc->capacity_gp[i] = 0;
1232
1233         if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
1234                 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1235
1236         if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
1237                 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1238
1239         if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
1240                 cmd.cmdidx = MMC_CMD_SET_DSR;
1241                 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
1242                 cmd.resp_type = MMC_RSP_NONE;
1243                 if (mmc_send_cmd(mmc, &cmd, NULL))
1244                         printf("MMC: SET_DSR failed\n");
1245         }
1246
1247         /* Select the card, and put it into Transfer Mode */
1248         if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
1249                 cmd.cmdidx = MMC_CMD_SELECT_CARD;
1250                 cmd.resp_type = MMC_RSP_R1;
1251                 cmd.cmdarg = mmc->rca << 16;
1252                 err = mmc_send_cmd(mmc, &cmd, NULL);
1253
1254                 if (err)
1255                         return err;
1256         }
1257
1258         /*
1259          * For SD, its erase group is always one sector
1260          */
1261         mmc->erase_grp_size = 1;
1262         mmc->part_config = MMCPART_NOAVAILABLE;
1263         if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
1264                 /* check  ext_csd version and capacity */
1265                 err = mmc_send_ext_csd(mmc, ext_csd);
1266                 if (err)
1267                         return err;
1268                 if (ext_csd[EXT_CSD_REV] >= 2) {
1269                         /*
1270                          * According to the JEDEC Standard, the value of
1271                          * ext_csd's capacity is valid if the value is more
1272                          * than 2GB
1273                          */
1274                         capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
1275                                         | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
1276                                         | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
1277                                         | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
1278                         capacity *= MMC_MAX_BLOCK_LEN;
1279                         if ((capacity >> 20) > 2 * 1024)
1280                                 mmc->capacity_user = capacity;
1281                 }
1282
1283                 switch (ext_csd[EXT_CSD_REV]) {
1284                 case 1:
1285                         mmc->version = MMC_VERSION_4_1;
1286                         break;
1287                 case 2:
1288                         mmc->version = MMC_VERSION_4_2;
1289                         break;
1290                 case 3:
1291                         mmc->version = MMC_VERSION_4_3;
1292                         break;
1293                 case 5:
1294                         mmc->version = MMC_VERSION_4_41;
1295                         break;
1296                 case 6:
1297                         mmc->version = MMC_VERSION_4_5;
1298                         break;
1299                 case 7:
1300                         mmc->version = MMC_VERSION_5_0;
1301                         break;
1302                 case 8:
1303                         mmc->version = MMC_VERSION_5_1;
1304                         break;
1305                 }
1306
1307                 /* The partition data may be non-zero but it is only
1308                  * effective if PARTITION_SETTING_COMPLETED is set in
1309                  * EXT_CSD, so ignore any data if this bit is not set,
1310                  * except for enabling the high-capacity group size
1311                  * definition (see below). */
1312                 part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] &
1313                                     EXT_CSD_PARTITION_SETTING_COMPLETED);
1314
1315                 /* store the partition info of emmc */
1316                 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
1317                 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
1318                     ext_csd[EXT_CSD_BOOT_MULT])
1319                         mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
1320                 if (part_completed &&
1321                     (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT))
1322                         mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
1323
1324                 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
1325
1326                 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
1327
1328                 for (i = 0; i < 4; i++) {
1329                         int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
1330                         uint mult = (ext_csd[idx + 2] << 16) +
1331                                 (ext_csd[idx + 1] << 8) + ext_csd[idx];
1332                         if (mult)
1333                                 has_parts = true;
1334                         if (!part_completed)
1335                                 continue;
1336                         mmc->capacity_gp[i] = mult;
1337                         mmc->capacity_gp[i] *=
1338                                 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1339                         mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1340                         mmc->capacity_gp[i] <<= 19;
1341                 }
1342
1343                 if (part_completed) {
1344                         mmc->enh_user_size =
1345                                 (ext_csd[EXT_CSD_ENH_SIZE_MULT+2] << 16) +
1346                                 (ext_csd[EXT_CSD_ENH_SIZE_MULT+1] << 8) +
1347                                 ext_csd[EXT_CSD_ENH_SIZE_MULT];
1348                         mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
1349                         mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1350                         mmc->enh_user_size <<= 19;
1351                         mmc->enh_user_start =
1352                                 (ext_csd[EXT_CSD_ENH_START_ADDR+3] << 24) +
1353                                 (ext_csd[EXT_CSD_ENH_START_ADDR+2] << 16) +
1354                                 (ext_csd[EXT_CSD_ENH_START_ADDR+1] << 8) +
1355                                 ext_csd[EXT_CSD_ENH_START_ADDR];
1356                         if (mmc->high_capacity)
1357                                 mmc->enh_user_start <<= 9;
1358                 }
1359
1360                 /*
1361                  * Host needs to enable ERASE_GRP_DEF bit if device is
1362                  * partitioned. This bit will be lost every time after a reset
1363                  * or power off. This will affect erase size.
1364                  */
1365                 if (part_completed)
1366                         has_parts = true;
1367                 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
1368                     (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB))
1369                         has_parts = true;
1370                 if (has_parts) {
1371                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1372                                 EXT_CSD_ERASE_GROUP_DEF, 1);
1373
1374                         if (err)
1375                                 return err;
1376                         else
1377                                 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1378                 }
1379
1380                 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) {
1381                         /* Read out group size from ext_csd */
1382                         mmc->erase_grp_size =
1383                                 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
1384                         /*
1385                          * if high capacity and partition setting completed
1386                          * SEC_COUNT is valid even if it is smaller than 2 GiB
1387                          * JEDEC Standard JESD84-B45, 6.2.4
1388                          */
1389                         if (mmc->high_capacity && part_completed) {
1390                                 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
1391                                         (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
1392                                         (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
1393                                         (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1394                                 capacity *= MMC_MAX_BLOCK_LEN;
1395                                 mmc->capacity_user = capacity;
1396                         }
1397                 } else {
1398                         /* Calculate the group size from the csd value. */
1399                         int erase_gsz, erase_gmul;
1400                         erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
1401                         erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
1402                         mmc->erase_grp_size = (erase_gsz + 1)
1403                                 * (erase_gmul + 1);
1404                 }
1405
1406                 mmc->hc_wp_grp_size = 1024
1407                         * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1408                         * ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1409
1410                 mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
1411         }
1412
1413         err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart);
1414         if (err)
1415                 return err;
1416
1417         if (IS_SD(mmc))
1418                 err = sd_change_freq(mmc);
1419         else
1420                 err = mmc_change_freq(mmc);
1421
1422         if (err)
1423                 return err;
1424
1425         /* Restrict card's capabilities by what the host can do */
1426         mmc->card_caps &= mmc->cfg->host_caps;
1427
1428         if (IS_SD(mmc)) {
1429                 if (mmc->card_caps & MMC_MODE_4BIT) {
1430                         cmd.cmdidx = MMC_CMD_APP_CMD;
1431                         cmd.resp_type = MMC_RSP_R1;
1432                         cmd.cmdarg = mmc->rca << 16;
1433
1434                         err = mmc_send_cmd(mmc, &cmd, NULL);
1435                         if (err)
1436                                 return err;
1437
1438                         cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1439                         cmd.resp_type = MMC_RSP_R1;
1440                         cmd.cmdarg = 2;
1441                         err = mmc_send_cmd(mmc, &cmd, NULL);
1442                         if (err)
1443                                 return err;
1444
1445                         mmc_set_bus_width(mmc, 4);
1446                 }
1447
1448                 err = sd_read_ssr(mmc);
1449                 if (err)
1450                         return err;
1451
1452                 if (mmc->card_caps & MMC_MODE_HS)
1453                         mmc->tran_speed = 50000000;
1454                 else
1455                         mmc->tran_speed = 25000000;
1456         } else if (mmc->version >= MMC_VERSION_4) {
1457                 /* Only version 4 of MMC supports wider bus widths */
1458                 int idx;
1459
1460                 /* An array of possible bus widths in order of preference */
1461                 static unsigned ext_csd_bits[] = {
1462                         EXT_CSD_DDR_BUS_WIDTH_8,
1463                         EXT_CSD_DDR_BUS_WIDTH_4,
1464                         EXT_CSD_BUS_WIDTH_8,
1465                         EXT_CSD_BUS_WIDTH_4,
1466                         EXT_CSD_BUS_WIDTH_1,
1467                 };
1468
1469                 /* An array to map CSD bus widths to host cap bits */
1470                 static unsigned ext_to_hostcaps[] = {
1471                         [EXT_CSD_DDR_BUS_WIDTH_4] =
1472                                 MMC_MODE_DDR_52MHz | MMC_MODE_4BIT,
1473                         [EXT_CSD_DDR_BUS_WIDTH_8] =
1474                                 MMC_MODE_DDR_52MHz | MMC_MODE_8BIT,
1475                         [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
1476                         [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
1477                 };
1478
1479                 /* An array to map chosen bus width to an integer */
1480                 static unsigned widths[] = {
1481                         8, 4, 8, 4, 1,
1482                 };
1483
1484                 for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
1485                         unsigned int extw = ext_csd_bits[idx];
1486                         unsigned int caps = ext_to_hostcaps[extw];
1487
1488                         /*
1489                          * If the bus width is still not changed,
1490                          * don't try to set the default again.
1491                          * Otherwise, recover from switch attempts
1492                          * by switching to 1-bit bus width.
1493                          */
1494                         if (extw == EXT_CSD_BUS_WIDTH_1 &&
1495                                         mmc->bus_width == 1) {
1496                                 err = 0;
1497                                 break;
1498                         }
1499
1500                         /*
1501                          * Check to make sure the card and controller support
1502                          * these capabilities
1503                          */
1504                         if ((mmc->card_caps & caps) != caps)
1505                                 continue;
1506
1507                         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1508                                         EXT_CSD_BUS_WIDTH, extw);
1509
1510                         if (err)
1511                                 continue;
1512
1513                         mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0;
1514                         mmc_set_bus_width(mmc, widths[idx]);
1515
1516                         err = mmc_send_ext_csd(mmc, test_csd);
1517
1518                         if (err)
1519                                 continue;
1520
1521                         /* Only compare read only fields */
1522                         if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT]
1523                                 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] &&
1524                             ext_csd[EXT_CSD_HC_WP_GRP_SIZE]
1525                                 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] &&
1526                             ext_csd[EXT_CSD_REV]
1527                                 == test_csd[EXT_CSD_REV] &&
1528                             ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1529                                 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] &&
1530                             memcmp(&ext_csd[EXT_CSD_SEC_CNT],
1531                                    &test_csd[EXT_CSD_SEC_CNT], 4) == 0)
1532                                 break;
1533                         else
1534                                 err = -EBADMSG;
1535                 }
1536
1537                 if (err)
1538                         return err;
1539
1540                 if (mmc->card_caps & MMC_MODE_HS) {
1541                         if (mmc->card_caps & MMC_MODE_HS_52MHz)
1542                                 mmc->tran_speed = 52000000;
1543                         else
1544                                 mmc->tran_speed = 26000000;
1545                 }
1546         }
1547
1548         mmc_set_clock(mmc, mmc->tran_speed);
1549
1550         /* Fix the block length for DDR mode */
1551         if (mmc->ddr_mode) {
1552                 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
1553                 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
1554         }
1555
1556         /* fill in device description */
1557         bdesc = mmc_get_blk_desc(mmc);
1558         bdesc->lun = 0;
1559         bdesc->hwpart = 0;
1560         bdesc->type = 0;
1561         bdesc->blksz = mmc->read_bl_len;
1562         bdesc->log2blksz = LOG2(bdesc->blksz);
1563         bdesc->lba = lldiv(mmc->capacity, mmc->read_bl_len);
1564 #if !defined(CONFIG_SPL_BUILD) || \
1565                 (defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \
1566                 !defined(CONFIG_USE_TINY_PRINTF))
1567         sprintf(bdesc->vendor, "Man %06x Snr %04x%04x",
1568                 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
1569                 (mmc->cid[3] >> 16) & 0xffff);
1570         sprintf(bdesc->product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
1571                 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
1572                 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
1573                 (mmc->cid[2] >> 24) & 0xff);
1574         sprintf(bdesc->revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
1575                 (mmc->cid[2] >> 16) & 0xf);
1576 #else
1577         bdesc->vendor[0] = 0;
1578         bdesc->product[0] = 0;
1579         bdesc->revision[0] = 0;
1580 #endif
1581 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1582         part_init(bdesc);
1583 #endif
1584
1585         return 0;
1586 }
1587
1588 static int mmc_send_if_cond(struct mmc *mmc)
1589 {
1590         struct mmc_cmd cmd;
1591         int err;
1592
1593         cmd.cmdidx = SD_CMD_SEND_IF_COND;
1594         /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1595         cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
1596         cmd.resp_type = MMC_RSP_R7;
1597
1598         err = mmc_send_cmd(mmc, &cmd, NULL);
1599
1600         if (err)
1601                 return err;
1602
1603         if ((cmd.response[0] & 0xff) != 0xaa)
1604                 return -EOPNOTSUPP;
1605         else
1606                 mmc->version = SD_VERSION_2;
1607
1608         return 0;
1609 }
1610
1611 #if !CONFIG_IS_ENABLED(DM_MMC)
1612 /* board-specific MMC power initializations. */
1613 __weak void board_mmc_power_init(void)
1614 {
1615 }
1616 #endif
1617
1618 static int mmc_power_init(struct mmc *mmc)
1619 {
1620 #if CONFIG_IS_ENABLED(DM_MMC)
1621 #if defined(CONFIG_DM_REGULATOR) && !defined(CONFIG_SPL_BUILD)
1622         struct udevice *vmmc_supply;
1623         int ret;
1624
1625         ret = device_get_supply_regulator(mmc->dev, "vmmc-supply",
1626                                           &vmmc_supply);
1627         if (ret) {
1628                 debug("%s: No vmmc supply\n", mmc->dev->name);
1629                 return 0;
1630         }
1631
1632         ret = regulator_set_enable(vmmc_supply, true);
1633         if (ret) {
1634                 puts("Error enabling VMMC supply\n");
1635                 return ret;
1636         }
1637 #endif
1638 #else /* !CONFIG_DM_MMC */
1639         /*
1640          * Driver model should use a regulator, as above, rather than calling
1641          * out to board code.
1642          */
1643         board_mmc_power_init();
1644 #endif
1645         return 0;
1646 }
1647
1648 int mmc_start_init(struct mmc *mmc)
1649 {
1650         bool no_card;
1651         int err;
1652
1653         /* we pretend there's no card when init is NULL */
1654         no_card = mmc_getcd(mmc) == 0;
1655 #if !CONFIG_IS_ENABLED(DM_MMC_OPS)
1656         no_card = no_card || (mmc->cfg->ops->init == NULL);
1657 #endif
1658         if (no_card) {
1659                 mmc->has_init = 0;
1660 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1661                 printf("MMC: no card present\n");
1662 #endif
1663                 return -ENOMEDIUM;
1664         }
1665
1666         if (mmc->has_init)
1667                 return 0;
1668
1669 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
1670         mmc_adapter_card_type_ident();
1671 #endif
1672         err = mmc_power_init(mmc);
1673         if (err)
1674                 return err;
1675
1676 #if CONFIG_IS_ENABLED(DM_MMC_OPS)
1677         /* The device has already been probed ready for use */
1678 #else
1679         /* made sure it's not NULL earlier */
1680         err = mmc->cfg->ops->init(mmc);
1681         if (err)
1682                 return err;
1683 #endif
1684         mmc->ddr_mode = 0;
1685         mmc_set_bus_width(mmc, 1);
1686         mmc_set_clock(mmc, 1);
1687
1688         /* Reset the Card */
1689         err = mmc_go_idle(mmc);
1690
1691         if (err)
1692                 return err;
1693
1694         /* The internal partition reset to user partition(0) at every CMD0*/
1695         mmc_get_blk_desc(mmc)->hwpart = 0;
1696
1697         /* Test for SD version 2 */
1698         err = mmc_send_if_cond(mmc);
1699
1700         /* Now try to get the SD card's operating condition */
1701         err = sd_send_op_cond(mmc);
1702
1703         /* If the command timed out, we check for an MMC card */
1704         if (err == -ETIMEDOUT) {
1705                 err = mmc_send_op_cond(mmc);
1706
1707                 if (err) {
1708 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1709                         printf("Card did not respond to voltage select!\n");
1710 #endif
1711                         return -EOPNOTSUPP;
1712                 }
1713         }
1714
1715         if (!err)
1716                 mmc->init_in_progress = 1;
1717
1718         return err;
1719 }
1720
1721 static int mmc_complete_init(struct mmc *mmc)
1722 {
1723         int err = 0;
1724
1725         mmc->init_in_progress = 0;
1726         if (mmc->op_cond_pending)
1727                 err = mmc_complete_op_cond(mmc);
1728
1729         if (!err)
1730                 err = mmc_startup(mmc);
1731         if (err)
1732                 mmc->has_init = 0;
1733         else
1734                 mmc->has_init = 1;
1735         return err;
1736 }
1737
1738 int mmc_init(struct mmc *mmc)
1739 {
1740         int err = 0;
1741         __maybe_unused unsigned start;
1742 #if CONFIG_IS_ENABLED(DM_MMC)
1743         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc->dev);
1744
1745         upriv->mmc = mmc;
1746 #endif
1747         if (mmc->has_init)
1748                 return 0;
1749
1750         start = get_timer(0);
1751
1752         if (!mmc->init_in_progress)
1753                 err = mmc_start_init(mmc);
1754
1755         if (!err)
1756                 err = mmc_complete_init(mmc);
1757         if (err)
1758                 printf("%s: %d, time %lu\n", __func__, err, get_timer(start));
1759
1760         return err;
1761 }
1762
1763 int mmc_set_dsr(struct mmc *mmc, u16 val)
1764 {
1765         mmc->dsr = val;
1766         return 0;
1767 }
1768
1769 /* CPU-specific MMC initializations */
1770 __weak int cpu_mmc_init(bd_t *bis)
1771 {
1772         return -1;
1773 }
1774
1775 /* board-specific MMC initializations. */
1776 __weak int board_mmc_init(bd_t *bis)
1777 {
1778         return -1;
1779 }
1780
1781 void mmc_set_preinit(struct mmc *mmc, int preinit)
1782 {
1783         mmc->preinit = preinit;
1784 }
1785
1786 #if CONFIG_IS_ENABLED(DM_MMC) && defined(CONFIG_SPL_BUILD)
1787 static int mmc_probe(bd_t *bis)
1788 {
1789         return 0;
1790 }
1791 #elif CONFIG_IS_ENABLED(DM_MMC)
1792 static int mmc_probe(bd_t *bis)
1793 {
1794         int ret, i;
1795         struct uclass *uc;
1796         struct udevice *dev;
1797
1798         ret = uclass_get(UCLASS_MMC, &uc);
1799         if (ret)
1800                 return ret;
1801
1802         /*
1803          * Try to add them in sequence order. Really with driver model we
1804          * should allow holes, but the current MMC list does not allow that.
1805          * So if we request 0, 1, 3 we will get 0, 1, 2.
1806          */
1807         for (i = 0; ; i++) {
1808                 ret = uclass_get_device_by_seq(UCLASS_MMC, i, &dev);
1809                 if (ret == -ENODEV)
1810                         break;
1811         }
1812         uclass_foreach_dev(dev, uc) {
1813                 ret = device_probe(dev);
1814                 if (ret)
1815                         printf("%s - probe failed: %d\n", dev->name, ret);
1816         }
1817
1818         return 0;
1819 }
1820 #else
1821 static int mmc_probe(bd_t *bis)
1822 {
1823         if (board_mmc_init(bis) < 0)
1824                 cpu_mmc_init(bis);
1825
1826         return 0;
1827 }
1828 #endif
1829
1830 int mmc_initialize(bd_t *bis)
1831 {
1832         static int initialized = 0;
1833         int ret;
1834         if (initialized)        /* Avoid initializing mmc multiple times */
1835                 return 0;
1836         initialized = 1;
1837
1838 #if !CONFIG_IS_ENABLED(BLK)
1839 #if !CONFIG_IS_ENABLED(MMC_TINY)
1840         mmc_list_init();
1841 #endif
1842 #endif
1843         ret = mmc_probe(bis);
1844         if (ret)
1845                 return ret;
1846
1847 #ifndef CONFIG_SPL_BUILD
1848         print_mmc_devices(',');
1849 #endif
1850
1851         mmc_do_preinit();
1852         return 0;
1853 }
1854
1855 #ifdef CONFIG_CMD_BKOPS_ENABLE
1856 int mmc_set_bkops_enable(struct mmc *mmc)
1857 {
1858         int err;
1859         ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
1860
1861         err = mmc_send_ext_csd(mmc, ext_csd);
1862         if (err) {
1863                 puts("Could not get ext_csd register values\n");
1864                 return err;
1865         }
1866
1867         if (!(ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1)) {
1868                 puts("Background operations not supported on device\n");
1869                 return -EMEDIUMTYPE;
1870         }
1871
1872         if (ext_csd[EXT_CSD_BKOPS_EN] & 0x1) {
1873                 puts("Background operations already enabled\n");
1874                 return 0;
1875         }
1876
1877         err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BKOPS_EN, 1);
1878         if (err) {
1879                 puts("Failed to enable manual background operations\n");
1880                 return err;
1881         }
1882
1883         puts("Enabled manual background operations\n");
1884
1885         return 0;
1886 }
1887 #endif