include/mmc.h

   1 /*
   2  * Copyright 2008,2010 Freescale Semiconductor, Inc
   3  * Andy Fleming
   4  *
   5  * Based (loosely) on the Linux code
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #ifndef _MMC_H_
  11 #define _MMC_H_
  12
  13 #include <linux/list.h>
  14 #include <linux/sizes.h>
  15 #include <linux/compiler.h>
  16 #include <part.h>
  17
  18 /* SD/MMC version bits; 8 flags, 8 major, 8 minor, 8 change */
  19 #define SD_VERSION_SD   (1U << 31)
  20 #define MMC_VERSION_MMC (1U << 30)
  21
  22 #define MAKE_SDMMC_VERSION(a, b, c)     \
  23         ((((u32)(a)) << 16) | ((u32)(b) << 8) | (u32)(c))
  24 #define MAKE_SD_VERSION(a, b, c)        \
  25         (SD_VERSION_SD | MAKE_SDMMC_VERSION(a, b, c))
  26 #define MAKE_MMC_VERSION(a, b, c)       \
  27         (MMC_VERSION_MMC | MAKE_SDMMC_VERSION(a, b, c))
  28
  29 #define EXTRACT_SDMMC_MAJOR_VERSION(x)  \
  30         (((u32)(x) >> 16) & 0xff)
  31 #define EXTRACT_SDMMC_MINOR_VERSION(x)  \
  32         (((u32)(x) >> 8) & 0xff)
  33 #define EXTRACT_SDMMC_CHANGE_VERSION(x) \
  34         ((u32)(x) & 0xff)
  35
  36 #define SD_VERSION_3            MAKE_SD_VERSION(3, 0, 0)
  37 #define SD_VERSION_2            MAKE_SD_VERSION(2, 0, 0)
  38 #define SD_VERSION_1_0          MAKE_SD_VERSION(1, 0, 0)
  39 #define SD_VERSION_1_10         MAKE_SD_VERSION(1, 10, 0)
  40
  41 #define MMC_VERSION_UNKNOWN     MAKE_MMC_VERSION(0, 0, 0)
  42 #define MMC_VERSION_1_2         MAKE_MMC_VERSION(1, 2, 0)
  43 #define MMC_VERSION_1_4         MAKE_MMC_VERSION(1, 4, 0)
  44 #define MMC_VERSION_2_2         MAKE_MMC_VERSION(2, 2, 0)
  45 #define MMC_VERSION_3           MAKE_MMC_VERSION(3, 0, 0)
  46 #define MMC_VERSION_4           MAKE_MMC_VERSION(4, 0, 0)
  47 #define MMC_VERSION_4_1         MAKE_MMC_VERSION(4, 1, 0)
  48 #define MMC_VERSION_4_2         MAKE_MMC_VERSION(4, 2, 0)
  49 #define MMC_VERSION_4_3         MAKE_MMC_VERSION(4, 3, 0)
  50 #define MMC_VERSION_4_41        MAKE_MMC_VERSION(4, 4, 1)
  51 #define MMC_VERSION_4_5         MAKE_MMC_VERSION(4, 5, 0)
  52 #define MMC_VERSION_5_0         MAKE_MMC_VERSION(5, 0, 0)
  53 #define MMC_VERSION_5_1         MAKE_MMC_VERSION(5, 1, 0)
  54
  55 #define MMC_MODE_HS             (1 << 0)
  56 #define MMC_MODE_HS_52MHz       (1 << 1)
  57 #define MMC_MODE_4BIT           (1 << 2)
  58 #define MMC_MODE_8BIT           (1 << 3)
  59 #define MMC_MODE_SPI            (1 << 4)
  60 #define MMC_MODE_DDR_52MHz      (1 << 5)
  61
  62 #define SD_DATA_4BIT    0x00040000
  63
  64 #define IS_SD(x)        ((x)->version & SD_VERSION_SD)
  65 #define IS_MMC(x)       ((x)->version & MMC_VERSION_MMC)
  66
  67 #define MMC_DATA_READ           1
  68 #define MMC_DATA_WRITE          2
  69
  70 #define MMC_CMD_GO_IDLE_STATE           0
  71 #define MMC_CMD_SEND_OP_COND            1
  72 #define MMC_CMD_ALL_SEND_CID            2
  73 #define MMC_CMD_SET_RELATIVE_ADDR       3
  74 #define MMC_CMD_SET_DSR                 4
  75 #define MMC_CMD_SWITCH                  6
  76 #define MMC_CMD_SELECT_CARD             7
  77 #define MMC_CMD_SEND_EXT_CSD            8
  78 #define MMC_CMD_SEND_CSD                9
  79 #define MMC_CMD_SEND_CID                10
  80 #define MMC_CMD_STOP_TRANSMISSION       12
  81 #define MMC_CMD_SEND_STATUS             13
  82 #define MMC_CMD_SET_BLOCKLEN            16
  83 #define MMC_CMD_READ_SINGLE_BLOCK       17
  84 #define MMC_CMD_READ_MULTIPLE_BLOCK     18
  85 #define MMC_CMD_SET_BLOCK_COUNT         23
  86 #define MMC_CMD_WRITE_SINGLE_BLOCK      24
  87 #define MMC_CMD_WRITE_MULTIPLE_BLOCK    25
  88 #define MMC_CMD_ERASE_GROUP_START       35
  89 #define MMC_CMD_ERASE_GROUP_END         36
  90 #define MMC_CMD_ERASE                   38
  91 #define MMC_CMD_APP_CMD                 55
  92 #define MMC_CMD_SPI_READ_OCR            58
  93 #define MMC_CMD_SPI_CRC_ON_OFF          59
  94 #define MMC_CMD_RES_MAN                 62
  95
  96 #define MMC_CMD62_ARG1                  0xefac62ec
  97 #define MMC_CMD62_ARG2                  0xcbaea7
  98
  99
 100 #define SD_CMD_SEND_RELATIVE_ADDR       3
 101 #define SD_CMD_SWITCH_FUNC              6
 102 #define SD_CMD_SEND_IF_COND             8
 103 #define SD_CMD_SWITCH_UHS18V            11
 104
 105 #define SD_CMD_APP_SET_BUS_WIDTH        6
 106 #define SD_CMD_APP_SD_STATUS            13
 107 #define SD_CMD_ERASE_WR_BLK_START       32
 108 #define SD_CMD_ERASE_WR_BLK_END         33
 109 #define SD_CMD_APP_SEND_OP_COND         41
 110 #define SD_CMD_APP_SEND_SCR             51
 111
 112 /* SCR definitions in different words */
 113 #define SD_HIGHSPEED_BUSY       0x00020000
 114 #define SD_HIGHSPEED_SUPPORTED  0x00020000
 115
 116 #define OCR_BUSY                0x80000000
 117 #define OCR_HCS                 0x40000000
 118 #define OCR_VOLTAGE_MASK        0x007FFF80
 119 #define OCR_ACCESS_MODE         0x60000000
 120
 121 #define MMC_ERASE_ARG           0x00000000
 122 #define MMC_SECURE_ERASE_ARG    0x80000000
 123 #define MMC_TRIM_ARG            0x00000001
 124 #define MMC_DISCARD_ARG         0x00000003
 125 #define MMC_SECURE_TRIM1_ARG    0x80000001
 126 #define MMC_SECURE_TRIM2_ARG    0x80008000
 127
 128 #define MMC_STATUS_MASK         (~0x0206BF7F)
 129 #define MMC_STATUS_SWITCH_ERROR (1 << 7)
 130 #define MMC_STATUS_RDY_FOR_DATA (1 << 8)
 131 #define MMC_STATUS_CURR_STATE   (0xf << 9)
 132 #define MMC_STATUS_ERROR        (1 << 19)
 133
 134 #define MMC_STATE_PRG           (7 << 9)
 135
 136 #define MMC_VDD_165_195         0x00000080      /* VDD voltage 1.65 - 1.95 */
 137 #define MMC_VDD_20_21           0x00000100      /* VDD voltage 2.0 ~ 2.1 */
 138 #define MMC_VDD_21_22           0x00000200      /* VDD voltage 2.1 ~ 2.2 */
 139 #define MMC_VDD_22_23           0x00000400      /* VDD voltage 2.2 ~ 2.3 */
 140 #define MMC_VDD_23_24           0x00000800      /* VDD voltage 2.3 ~ 2.4 */
 141 #define MMC_VDD_24_25           0x00001000      /* VDD voltage 2.4 ~ 2.5 */
 142 #define MMC_VDD_25_26           0x00002000      /* VDD voltage 2.5 ~ 2.6 */
 143 #define MMC_VDD_26_27           0x00004000      /* VDD voltage 2.6 ~ 2.7 */
 144 #define MMC_VDD_27_28           0x00008000      /* VDD voltage 2.7 ~ 2.8 */
 145 #define MMC_VDD_28_29           0x00010000      /* VDD voltage 2.8 ~ 2.9 */
 146 #define MMC_VDD_29_30           0x00020000      /* VDD voltage 2.9 ~ 3.0 */
 147 #define MMC_VDD_30_31           0x00040000      /* VDD voltage 3.0 ~ 3.1 */
 148 #define MMC_VDD_31_32           0x00080000      /* VDD voltage 3.1 ~ 3.2 */
 149 #define MMC_VDD_32_33           0x00100000      /* VDD voltage 3.2 ~ 3.3 */
 150 #define MMC_VDD_33_34           0x00200000      /* VDD voltage 3.3 ~ 3.4 */
 151 #define MMC_VDD_34_35           0x00400000      /* VDD voltage 3.4 ~ 3.5 */
 152 #define MMC_VDD_35_36           0x00800000      /* VDD voltage 3.5 ~ 3.6 */
 153
 154 #define MMC_SWITCH_MODE_CMD_SET         0x00 /* Change the command set */
 155 #define MMC_SWITCH_MODE_SET_BITS        0x01 /* Set bits in EXT_CSD byte
 156                                                 addressed by index which are
 157                                                 1 in value field */
 158 #define MMC_SWITCH_MODE_CLEAR_BITS      0x02 /* Clear bits in EXT_CSD byte
 159                                                 addressed by index, which are
 160                                                 1 in value field */
 161 #define MMC_SWITCH_MODE_WRITE_BYTE      0x03 /* Set target byte to value */
 162
 163 #define SD_SWITCH_CHECK         0
 164 #define SD_SWITCH_SWITCH        1
 165
 166 /*
 167  * EXT_CSD fields
 168  */
 169 #define EXT_CSD_ENH_START_ADDR          136     /* R/W */
 170 #define EXT_CSD_ENH_SIZE_MULT           140     /* R/W */
 171 #define EXT_CSD_GP_SIZE_MULT            143     /* R/W */
 172 #define EXT_CSD_PARTITION_SETTING       155     /* R/W */
 173 #define EXT_CSD_PARTITIONS_ATTRIBUTE    156     /* R/W */
 174 #define EXT_CSD_MAX_ENH_SIZE_MULT       157     /* R */
 175 #define EXT_CSD_PARTITIONING_SUPPORT    160     /* RO */
 176 #define EXT_CSD_RST_N_FUNCTION          162     /* R/W */
 177 #define EXT_CSD_BKOPS_EN                163     /* R/W & R/W/E */
 178 #define EXT_CSD_WR_REL_PARAM            166     /* R */
 179 #define EXT_CSD_WR_REL_SET              167     /* R/W */
 180 #define EXT_CSD_RPMB_MULT               168     /* RO */
 181 #define EXT_CSD_ERASE_GROUP_DEF         175     /* R/W */
 182 #define EXT_CSD_BOOT_BUS_WIDTH          177
 183 #define EXT_CSD_PART_CONF               179     /* R/W */
 184 #define EXT_CSD_BUS_WIDTH               183     /* R/W */
 185 #define EXT_CSD_HS_TIMING               185     /* R/W */
 186 #define EXT_CSD_REV                     192     /* RO */
 187 #define EXT_CSD_CARD_TYPE               196     /* RO */
 188 #define EXT_CSD_SEC_CNT                 212     /* RO, 4 bytes */
 189 #define EXT_CSD_HC_WP_GRP_SIZE          221     /* RO */
 190 #define EXT_CSD_HC_ERASE_GRP_SIZE       224     /* RO */
 191 #define EXT_CSD_BOOT_MULT               226     /* RO */
 192 #define EXT_CSD_BKOPS_SUPPORT           502     /* RO */
 193
 194 /*
 195  * EXT_CSD field definitions
 196  */
 197
 198 #define EXT_CSD_CMD_SET_NORMAL          (1 << 0)
 199 #define EXT_CSD_CMD_SET_SECURE          (1 << 1)
 200 #define EXT_CSD_CMD_SET_CPSECURE        (1 << 2)
 201
 202 #define EXT_CSD_CARD_TYPE_26    (1 << 0)        /* Card can run at 26MHz */
 203 #define EXT_CSD_CARD_TYPE_52    (1 << 1)        /* Card can run at 52MHz */
 204 #define EXT_CSD_CARD_TYPE_DDR_1_8V      (1 << 2)
 205 #define EXT_CSD_CARD_TYPE_DDR_1_2V      (1 << 3)
 206 #define EXT_CSD_CARD_TYPE_DDR_52        (EXT_CSD_CARD_TYPE_DDR_1_8V \
 207                                         | EXT_CSD_CARD_TYPE_DDR_1_2V)
 208
 209 #define EXT_CSD_BUS_WIDTH_1     0       /* Card is in 1 bit mode */
 210 #define EXT_CSD_BUS_WIDTH_4     1       /* Card is in 4 bit mode */
 211 #define EXT_CSD_BUS_WIDTH_8     2       /* Card is in 8 bit mode */
 212 #define EXT_CSD_DDR_BUS_WIDTH_4 5       /* Card is in 4 bit DDR mode */
 213 #define EXT_CSD_DDR_BUS_WIDTH_8 6       /* Card is in 8 bit DDR mode */
 214
 215 #define EXT_CSD_BOOT_ACK_ENABLE                 (1 << 6)
 216 #define EXT_CSD_BOOT_PARTITION_ENABLE           (1 << 3)
 217 #define EXT_CSD_PARTITION_ACCESS_ENABLE         (1 << 0)
 218 #define EXT_CSD_PARTITION_ACCESS_DISABLE        (0 << 0)
 219
 220 #define EXT_CSD_BOOT_ACK(x)             (x << 6)
 221 #define EXT_CSD_BOOT_PART_NUM(x)        (x << 3)
 222 #define EXT_CSD_PARTITION_ACCESS(x)     (x << 0)
 223
 224 #define EXT_CSD_EXTRACT_BOOT_ACK(x)             (((x) >> 6) & 0x1)
 225 #define EXT_CSD_EXTRACT_BOOT_PART(x)            (((x) >> 3) & 0x7)
 226 #define EXT_CSD_EXTRACT_PARTITION_ACCESS(x)     ((x) & 0x7)
 227
 228 #define EXT_CSD_BOOT_BUS_WIDTH_MODE(x)  (x << 3)
 229 #define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
 230 #define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)
 231
 232 #define EXT_CSD_PARTITION_SETTING_COMPLETED     (1 << 0)
 233
 234 #define EXT_CSD_ENH_USR         (1 << 0)        /* user data area is enhanced */
 235 #define EXT_CSD_ENH_GP(x)       (1 << ((x)+1))  /* GP part (x+1) is enhanced */
 236
 237 #define EXT_CSD_HS_CTRL_REL     (1 << 0)        /* host controlled WR_REL_SET */
 238
 239 #define EXT_CSD_WR_DATA_REL_USR         (1 << 0)        /* user data area WR_REL */
 240 #define EXT_CSD_WR_DATA_REL_GP(x)       (1 << ((x)+1))  /* GP part (x+1) WR_REL */
 241
 242 #define R1_ILLEGAL_COMMAND              (1 << 22)
 243 #define R1_APP_CMD                      (1 << 5)
 244
 245 #define MMC_RSP_PRESENT (1 << 0)
 246 #define MMC_RSP_136     (1 << 1)                /* 136 bit response */
 247 #define MMC_RSP_CRC     (1 << 2)                /* expect valid crc */
 248 #define MMC_RSP_BUSY    (1 << 3)                /* card may send busy */
 249 #define MMC_RSP_OPCODE  (1 << 4)                /* response contains opcode */
 250
 251 #define MMC_RSP_NONE    (0)
 252 #define MMC_RSP_R1      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 253 #define MMC_RSP_R1b     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
 254                         MMC_RSP_BUSY)
 255 #define MMC_RSP_R2      (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
 256 #define MMC_RSP_R3      (MMC_RSP_PRESENT)
 257 #define MMC_RSP_R4      (MMC_RSP_PRESENT)
 258 #define MMC_RSP_R5      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 259 #define MMC_RSP_R6      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 260 #define MMC_RSP_R7      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 261
 262 #define MMCPART_NOAVAILABLE     (0xff)
 263 #define PART_ACCESS_MASK        (0x7)
 264 #define PART_SUPPORT            (0x1)
 265 #define ENHNCD_SUPPORT          (0x2)
 266 #define PART_ENH_ATTRIB         (0x1f)
 267
 268 /* Maximum block size for MMC */
 269 #define MMC_MAX_BLOCK_LEN       512
 270
 271 /* The number of MMC physical partitions.  These consist of:
 272  * boot partitions (2), general purpose partitions (4) in MMC v4.4.
 273  */
 274 #define MMC_NUM_BOOT_PARTITION  2
 275 #define MMC_PART_RPMB           3       /* RPMB partition number */
 276
 277 /* Driver model support */
 278
 279 /**
 280  * struct mmc_uclass_priv - Holds information about a device used by the uclass
 281  */
 282 struct mmc_uclass_priv {
 283         struct mmc *mmc;
 284 };
 285
 286 /**
 287  * mmc_get_mmc_dev() - get the MMC struct pointer for a device
 288  *
 289  * Provided that the device is already probed and ready for use, this value
 290  * will be available.
 291  *
 292  * @dev:        Device
 293  * @return associated mmc struct pointer if available, else NULL
 294  */
 295 struct mmc *mmc_get_mmc_dev(struct udevice *dev);
 296
 297 /* End of driver model support */
 298
 299 struct mmc_cid {
 300         unsigned long psn;
 301         unsigned short oid;
 302         unsigned char mid;
 303         unsigned char prv;
 304         unsigned char mdt;
 305         char pnm[7];
 306 };
 307
 308 struct mmc_cmd {
 309         ushort cmdidx;
 310         uint resp_type;
 311         uint cmdarg;
 312         uint response[4];
 313 };
 314
 315 struct mmc_data {
 316         union {
 317                 char *dest;
 318                 const char *src; /* src buffers don't get written to */
 319         };
 320         uint flags;
 321         uint blocks;
 322         uint blocksize;
 323 };
 324
 325 /* forward decl. */
 326 struct mmc;
 327
 328 #if CONFIG_IS_ENABLED(DM_MMC)
 329 struct dm_mmc_ops {
 330         /**
 331          * send_cmd() - Send a command to the MMC device
 332          *
 333          * @dev:        Device to receive the command
 334          * @cmd:        Command to send
 335          * @data:       Additional data to send/receive
 336          * @return 0 if OK, -ve on error
 337          */
 338         int (*send_cmd)(struct udevice *dev, struct mmc_cmd *cmd,
 339                         struct mmc_data *data);
 340
 341         /**
 342          * set_ios() - Set the I/O speed/width for an MMC device
 343          *
 344          * @dev:        Device to update
 345          * @return 0 if OK, -ve on error
 346          */
 347         int (*set_ios)(struct udevice *dev);
 348
 349         /**
 350          * get_cd() - See whether a card is present
 351          *
 352          * @dev:        Device to check
 353          * @return 0 if not present, 1 if present, -ve on error
 354          */
 355         int (*get_cd)(struct udevice *dev);
 356
 357         /**
 358          * get_wp() - See whether a card has write-protect enabled
 359          *
 360          * @dev:        Device to check
 361          * @return 0 if write-enabled, 1 if write-protected, -ve on error
 362          */
 363         int (*get_wp)(struct udevice *dev);
 364 };
 365
 366 #define mmc_get_ops(dev)        ((struct dm_mmc_ops *)(dev)->driver->ops)
 367
 368 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 369                     struct mmc_data *data);
 370 int dm_mmc_set_ios(struct udevice *dev);
 371 int dm_mmc_get_cd(struct udevice *dev);
 372 int dm_mmc_get_wp(struct udevice *dev);
 373
 374 /* Transition functions for compatibility */
 375 int mmc_set_ios(struct mmc *mmc);
 376 int mmc_getcd(struct mmc *mmc);
 377 int mmc_getwp(struct mmc *mmc);
 378
 379 #else
 380 struct mmc_ops {
 381         int (*send_cmd)(struct mmc *mmc,
 382                         struct mmc_cmd *cmd, struct mmc_data *data);
 383         int (*set_ios)(struct mmc *mmc);
 384         int (*init)(struct mmc *mmc);
 385         int (*getcd)(struct mmc *mmc);
 386         int (*getwp)(struct mmc *mmc);
 387 };
 388 #endif
 389
 390 struct mmc_config {
 391         const char *name;
 392 #if !CONFIG_IS_ENABLED(DM_MMC)
 393         const struct mmc_ops *ops;
 394 #endif
 395         uint host_caps;
 396         uint voltages;
 397         uint f_min;
 398         uint f_max;
 399         uint b_max;
 400         unsigned char part_type;
 401 };
 402
 403 struct sd_ssr {
 404         unsigned int au;                /* In sectors */
 405         unsigned int erase_timeout;     /* In milliseconds */
 406         unsigned int erase_offset;      /* In milliseconds */
 407 };
 408
 409 /*
 410  * With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device
 411  * with mmc_get_mmc_dev().
 412  *
 413  * TODO struct mmc should be in mmc_private but it's hard to fix right now
 414  */
 415 struct mmc {
 416 #if !CONFIG_IS_ENABLED(BLK)
 417         struct list_head link;
 418 #endif
 419         const struct mmc_config *cfg;   /* provided configuration */
 420         uint version;
 421         void *priv;
 422         uint has_init;
 423         int high_capacity;
 424         uint bus_width;
 425         uint clock;
 426         uint card_caps;
 427         uint ocr;
 428         uint dsr;
 429         uint dsr_imp;
 430         uint scr[2];
 431         uint csd[4];
 432         uint cid[4];
 433         ushort rca;
 434         u8 part_support;
 435         u8 part_attr;
 436         u8 wr_rel_set;
 437         u8 part_config;
 438         uint tran_speed;
 439         uint read_bl_len;
 440         uint write_bl_len;
 441         uint erase_grp_size;    /* in 512-byte sectors */
 442         uint hc_wp_grp_size;    /* in 512-byte sectors */
 443         struct sd_ssr   ssr;    /* SD status register */
 444         u64 capacity;
 445         u64 capacity_user;
 446         u64 capacity_boot;
 447         u64 capacity_rpmb;
 448         u64 capacity_gp[4];
 449         u64 enh_user_start;
 450         u64 enh_user_size;
 451 #if !CONFIG_IS_ENABLED(BLK)
 452         struct blk_desc block_dev;
 453 #endif
 454         char op_cond_pending;   /* 1 if we are waiting on an op_cond command */
 455         char init_in_progress;  /* 1 if we have done mmc_start_init() */
 456         char preinit;           /* start init as early as possible */
 457         int ddr_mode;
 458 #if CONFIG_IS_ENABLED(DM_MMC)
 459         struct udevice *dev;    /* Device for this MMC controller */
 460 #if CONFIG_IS_ENABLED(DM_REGULATOR)
 461         struct udevice *vmmc_supply;    /* Main voltage regulator (Vcc)*/
 462         struct udevice *vqmmc_supply;   /* IO voltage regulator (Vccq)*/
 463 #endif
 464 #endif
 465         u8 *ext_csd;
 466 };
 467
 468 struct mmc_hwpart_conf {
 469         struct {
 470                 uint enh_start; /* in 512-byte sectors */
 471                 uint enh_size;  /* in 512-byte sectors, if 0 no enh area */
 472                 unsigned wr_rel_change : 1;
 473                 unsigned wr_rel_set : 1;
 474         } user;
 475         struct {
 476                 uint size;      /* in 512-byte sectors */
 477                 unsigned enhanced : 1;
 478                 unsigned wr_rel_change : 1;
 479                 unsigned wr_rel_set : 1;
 480         } gp_part[4];
 481 };
 482
 483 enum mmc_hwpart_conf_mode {
 484         MMC_HWPART_CONF_CHECK,
 485         MMC_HWPART_CONF_SET,
 486         MMC_HWPART_CONF_COMPLETE,
 487 };
 488
 489 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv);
 490
 491 /**
 492  * mmc_bind() - Set up a new MMC device ready for probing
 493  *
 494  * A child block device is bound with the IF_TYPE_MMC interface type. This
 495  * allows the device to be used with CONFIG_BLK
 496  *
 497  * @dev:        MMC device to set up
 498  * @mmc:        MMC struct
 499  * @cfg:        MMC configuration
 500  * @return 0 if OK, -ve on error
 501  */
 502 int mmc_bind(struct udevice *dev, struct mmc *mmc,
 503              const struct mmc_config *cfg);
 504 void mmc_destroy(struct mmc *mmc);
 505
 506 /**
 507  * mmc_unbind() - Unbind a MMC device's child block device
 508  *
 509  * @dev:        MMC device
 510  * @return 0 if OK, -ve on error
 511  */
 512 int mmc_unbind(struct udevice *dev);
 513 int mmc_initialize(bd_t *bis);
 514 int mmc_init(struct mmc *mmc);
 515 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
 516 void mmc_set_clock(struct mmc *mmc, uint clock);
 517 struct mmc *find_mmc_device(int dev_num);
 518 int mmc_set_dev(int dev_num);
 519 void print_mmc_devices(char separator);
 520
 521 /**
 522  * get_mmc_num() - get the total MMC device number
 523  *
 524  * @return 0 if there is no MMC device, else the number of devices
 525  */
 526 int get_mmc_num(void);
 527 int mmc_switch_part(struct mmc *mmc, unsigned int part_num);
 528 int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf,
 529                       enum mmc_hwpart_conf_mode mode);
 530
 531 #if !CONFIG_IS_ENABLED(DM_MMC)
 532 int mmc_getcd(struct mmc *mmc);
 533 int board_mmc_getcd(struct mmc *mmc);
 534 int mmc_getwp(struct mmc *mmc);
 535 int board_mmc_getwp(struct mmc *mmc);
 536 #endif
 537
 538 int mmc_set_dsr(struct mmc *mmc, u16 val);
 539 /* Function to change the size of boot partition and rpmb partitions */
 540 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
 541                                         unsigned long rpmbsize);
 542 /* Function to modify the PARTITION_CONFIG field of EXT_CSD */
 543 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
 544 /* Function to modify the BOOT_BUS_WIDTH field of EXT_CSD */
 545 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode);
 546 /* Function to modify the RST_n_FUNCTION field of EXT_CSD */
 547 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable);
 548 /* Functions to read / write the RPMB partition */
 549 int mmc_rpmb_set_key(struct mmc *mmc, void *key);
 550 int mmc_rpmb_get_counter(struct mmc *mmc, unsigned long *counter);
 551 int mmc_rpmb_read(struct mmc *mmc, void *addr, unsigned short blk,
 552                   unsigned short cnt, unsigned char *key);
 553 int mmc_rpmb_write(struct mmc *mmc, void *addr, unsigned short blk,
 554                    unsigned short cnt, unsigned char *key);
 555 #ifdef CONFIG_CMD_BKOPS_ENABLE
 556 int mmc_set_bkops_enable(struct mmc *mmc);
 557 #endif
 558
 559 /**
 560  * Start device initialization and return immediately; it does not block on
 561  * polling OCR (operation condition register) status.  Then you should call
 562  * mmc_init, which would block on polling OCR status and complete the device
 563  * initializatin.
 564  *
 565  * @param mmc   Pointer to a MMC device struct
 566  * @return 0 on success, IN_PROGRESS on waiting for OCR status, <0 on error.
 567  */
 568 int mmc_start_init(struct mmc *mmc);
 569
 570 /**
 571  * Set preinit flag of mmc device.
 572  *
 573  * This will cause the device to be pre-inited during mmc_initialize(),
 574  * which may save boot time if the device is not accessed until later.
 575  * Some eMMC devices take 200-300ms to init, but unfortunately they
 576  * must be sent a series of commands to even get them to start preparing
 577  * for operation.
 578  *
 579  * @param mmc           Pointer to a MMC device struct
 580  * @param preinit       preinit flag value
 581  */
 582 void mmc_set_preinit(struct mmc *mmc, int preinit);
 583
 584 #ifdef CONFIG_MMC_SPI
 585 #define mmc_host_is_spi(mmc)    ((mmc)->cfg->host_caps & MMC_MODE_SPI)
 586 #else
 587 #define mmc_host_is_spi(mmc)    0
 588 #endif
 589 struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
 590
 591 void board_mmc_power_init(void);
 592 int board_mmc_init(bd_t *bis);
 593 int cpu_mmc_init(bd_t *bis);
 594 int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr);
 595 int mmc_get_env_dev(void);
 596
 597 /* Set block count limit because of 16 bit register limit on some hardware*/
 598 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
 599 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
 600 #endif
 601
 602 /**
 603  * mmc_get_blk_desc() - Get the block descriptor for an MMC device
 604  *
 605  * @mmc:        MMC device
 606  * @return block device if found, else NULL
 607  */
 608 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc);
 609
 610 #endif /* _MMC_H_ */