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_BOOT_BUS_WIDTH_MODE(x)  (x << 3)
 225 #define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
 226 #define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)
 227
 228 #define EXT_CSD_PARTITION_SETTING_COMPLETED     (1 << 0)
 229
 230 #define EXT_CSD_ENH_USR         (1 << 0)        /* user data area is enhanced */
 231 #define EXT_CSD_ENH_GP(x)       (1 << ((x)+1))  /* GP part (x+1) is enhanced */
 232
 233 #define EXT_CSD_HS_CTRL_REL     (1 << 0)        /* host controlled WR_REL_SET */
 234
 235 #define EXT_CSD_WR_DATA_REL_USR         (1 << 0)        /* user data area WR_REL */
 236 #define EXT_CSD_WR_DATA_REL_GP(x)       (1 << ((x)+1))  /* GP part (x+1) WR_REL */
 237
 238 #define R1_ILLEGAL_COMMAND              (1 << 22)
 239 #define R1_APP_CMD                      (1 << 5)
 240
 241 #define MMC_RSP_PRESENT (1 << 0)
 242 #define MMC_RSP_136     (1 << 1)                /* 136 bit response */
 243 #define MMC_RSP_CRC     (1 << 2)                /* expect valid crc */
 244 #define MMC_RSP_BUSY    (1 << 3)                /* card may send busy */
 245 #define MMC_RSP_OPCODE  (1 << 4)                /* response contains opcode */
 246
 247 #define MMC_RSP_NONE    (0)
 248 #define MMC_RSP_R1      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 249 #define MMC_RSP_R1b     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
 250                         MMC_RSP_BUSY)
 251 #define MMC_RSP_R2      (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
 252 #define MMC_RSP_R3      (MMC_RSP_PRESENT)
 253 #define MMC_RSP_R4      (MMC_RSP_PRESENT)
 254 #define MMC_RSP_R5      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 255 #define MMC_RSP_R6      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 256 #define MMC_RSP_R7      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 257
 258 #define MMCPART_NOAVAILABLE     (0xff)
 259 #define PART_ACCESS_MASK        (0x7)
 260 #define PART_SUPPORT            (0x1)
 261 #define ENHNCD_SUPPORT          (0x2)
 262 #define PART_ENH_ATTRIB         (0x1f)
 263
 264 /* Maximum block size for MMC */
 265 #define MMC_MAX_BLOCK_LEN       512
 266
 267 /* The number of MMC physical partitions.  These consist of:
 268  * boot partitions (2), general purpose partitions (4) in MMC v4.4.
 269  */
 270 #define MMC_NUM_BOOT_PARTITION  2
 271 #define MMC_PART_RPMB           3       /* RPMB partition number */
 272
 273 /* Driver model support */
 274
 275 /**
 276  * struct mmc_uclass_priv - Holds information about a device used by the uclass
 277  */
 278 struct mmc_uclass_priv {
 279         struct mmc *mmc;
 280 };
 281
 282 /**
 283  * mmc_get_mmc_dev() - get the MMC struct pointer for a device
 284  *
 285  * Provided that the device is already probed and ready for use, this value
 286  * will be available.
 287  *
 288  * @dev:        Device
 289  * @return associated mmc struct pointer if available, else NULL
 290  */
 291 struct mmc *mmc_get_mmc_dev(struct udevice *dev);
 292
 293 /* End of driver model support */
 294
 295 struct mmc_cid {
 296         unsigned long psn;
 297         unsigned short oid;
 298         unsigned char mid;
 299         unsigned char prv;
 300         unsigned char mdt;
 301         char pnm[7];
 302 };
 303
 304 struct mmc_cmd {
 305         ushort cmdidx;
 306         uint resp_type;
 307         uint cmdarg;
 308         uint response[4];
 309 };
 310
 311 struct mmc_data {
 312         union {
 313                 char *dest;
 314                 const char *src; /* src buffers don't get written to */
 315         };
 316         uint flags;
 317         uint blocks;
 318         uint blocksize;
 319 };
 320
 321 /* forward decl. */
 322 struct mmc;
 323
 324 #ifdef CONFIG_DM_MMC_OPS
 325 struct dm_mmc_ops {
 326         /**
 327          * send_cmd() - Send a command to the MMC device
 328          *
 329          * @dev:        Device to receive the command
 330          * @cmd:        Command to send
 331          * @data:       Additional data to send/receive
 332          * @return 0 if OK, -ve on error
 333          */
 334         int (*send_cmd)(struct udevice *dev, struct mmc_cmd *cmd,
 335                         struct mmc_data *data);
 336
 337         /**
 338          * set_ios() - Set the I/O speed/width for an MMC device
 339          *
 340          * @dev:        Device to update
 341          * @return 0 if OK, -ve on error
 342          */
 343         int (*set_ios)(struct udevice *dev);
 344
 345         /**
 346          * get_cd() - See whether a card is present
 347          *
 348          * @dev:        Device to check
 349          * @return 0 if not present, 1 if present, -ve on error
 350          */
 351         int (*get_cd)(struct udevice *dev);
 352
 353         /**
 354          * get_wp() - See whether a card has write-protect enabled
 355          *
 356          * @dev:        Device to check
 357          * @return 0 if write-enabled, 1 if write-protected, -ve on error
 358          */
 359         int (*get_wp)(struct udevice *dev);
 360 };
 361
 362 #define mmc_get_ops(dev)        ((struct dm_mmc_ops *)(dev)->driver->ops)
 363
 364 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 365                     struct mmc_data *data);
 366 int dm_mmc_set_ios(struct udevice *dev);
 367 int dm_mmc_get_cd(struct udevice *dev);
 368 int dm_mmc_get_wp(struct udevice *dev);
 369
 370 /* Transition functions for compatibility */
 371 int mmc_set_ios(struct mmc *mmc);
 372 int mmc_getcd(struct mmc *mmc);
 373 int mmc_getwp(struct mmc *mmc);
 374
 375 #else
 376 struct mmc_ops {
 377         int (*send_cmd)(struct mmc *mmc,
 378                         struct mmc_cmd *cmd, struct mmc_data *data);
 379         int (*set_ios)(struct mmc *mmc);
 380         int (*init)(struct mmc *mmc);
 381         int (*getcd)(struct mmc *mmc);
 382         int (*getwp)(struct mmc *mmc);
 383 };
 384 #endif
 385
 386 struct mmc_config {
 387         const char *name;
 388 #ifndef CONFIG_DM_MMC_OPS
 389         const struct mmc_ops *ops;
 390 #endif
 391         uint host_caps;
 392         uint voltages;
 393         uint f_min;
 394         uint f_max;
 395         uint b_max;
 396         unsigned char part_type;
 397 };
 398
 399 struct sd_ssr {
 400         unsigned int au;                /* In sectors */
 401         unsigned int erase_timeout;     /* In milliseconds */
 402         unsigned int erase_offset;      /* In milliseconds */
 403 };
 404
 405 /*
 406  * With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device
 407  * with mmc_get_mmc_dev().
 408  *
 409  * TODO struct mmc should be in mmc_private but it's hard to fix right now
 410  */
 411 struct mmc {
 412 #ifndef CONFIG_BLK
 413         struct list_head link;
 414 #endif
 415         const struct mmc_config *cfg;   /* provided configuration */
 416         uint version;
 417         void *priv;
 418         uint has_init;
 419         int high_capacity;
 420         uint bus_width;
 421         uint clock;
 422         uint card_caps;
 423         uint ocr;
 424         uint dsr;
 425         uint dsr_imp;
 426         uint scr[2];
 427         uint csd[4];
 428         uint cid[4];
 429         ushort rca;
 430         u8 part_support;
 431         u8 part_attr;
 432         u8 wr_rel_set;
 433         char part_config;
 434         uint tran_speed;
 435         uint read_bl_len;
 436         uint write_bl_len;
 437         uint erase_grp_size;    /* in 512-byte sectors */
 438         uint hc_wp_grp_size;    /* in 512-byte sectors */
 439         struct sd_ssr   ssr;    /* SD status register */
 440         u64 capacity;
 441         u64 capacity_user;
 442         u64 capacity_boot;
 443         u64 capacity_rpmb;
 444         u64 capacity_gp[4];
 445         u64 enh_user_start;
 446         u64 enh_user_size;
 447 #ifndef CONFIG_BLK
 448         struct blk_desc block_dev;
 449 #endif
 450         char op_cond_pending;   /* 1 if we are waiting on an op_cond command */
 451         char init_in_progress;  /* 1 if we have done mmc_start_init() */
 452         char preinit;           /* start init as early as possible */
 453         int ddr_mode;
 454 #ifdef CONFIG_DM_MMC
 455         struct udevice *dev;    /* Device for this MMC controller */
 456 #endif
 457 };
 458
 459 struct mmc_hwpart_conf {
 460         struct {
 461                 uint enh_start; /* in 512-byte sectors */
 462                 uint enh_size;  /* in 512-byte sectors, if 0 no enh area */
 463                 unsigned wr_rel_change : 1;
 464                 unsigned wr_rel_set : 1;
 465         } user;
 466         struct {
 467                 uint size;      /* in 512-byte sectors */
 468                 unsigned enhanced : 1;
 469                 unsigned wr_rel_change : 1;
 470                 unsigned wr_rel_set : 1;
 471         } gp_part[4];
 472 };
 473
 474 enum mmc_hwpart_conf_mode {
 475         MMC_HWPART_CONF_CHECK,
 476         MMC_HWPART_CONF_SET,
 477         MMC_HWPART_CONF_COMPLETE,
 478 };
 479
 480 struct mmc *mmc_create(const struct mmc_config *cfg, void *priv);
 481
 482 /**
 483  * mmc_bind() - Set up a new MMC device ready for probing
 484  *
 485  * A child block device is bound with the IF_TYPE_MMC interface type. This
 486  * allows the device to be used with CONFIG_BLK
 487  *
 488  * @dev:        MMC device to set up
 489  * @mmc:        MMC struct
 490  * @cfg:        MMC configuration
 491  * @return 0 if OK, -ve on error
 492  */
 493 int mmc_bind(struct udevice *dev, struct mmc *mmc,
 494              const struct mmc_config *cfg);
 495 void mmc_destroy(struct mmc *mmc);
 496
 497 /**
 498  * mmc_unbind() - Unbind a MMC device's child block device
 499  *
 500  * @dev:        MMC device
 501  * @return 0 if OK, -ve on error
 502  */
 503 int mmc_unbind(struct udevice *dev);
 504 int mmc_initialize(bd_t *bis);
 505 int mmc_init(struct mmc *mmc);
 506 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
 507 void mmc_set_clock(struct mmc *mmc, uint clock);
 508 struct mmc *find_mmc_device(int dev_num);
 509 int mmc_set_dev(int dev_num);
 510 void print_mmc_devices(char separator);
 511
 512 /**
 513  * get_mmc_num() - get the total MMC device number
 514  *
 515  * @return 0 if there is no MMC device, else the number of devices
 516  */
 517 int get_mmc_num(void);
 518 int mmc_switch_part(struct mmc *mmc, unsigned int part_num);
 519 int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf,
 520                       enum mmc_hwpart_conf_mode mode);
 521
 522 #ifndef CONFIG_DM_MMC_OPS
 523 int mmc_getcd(struct mmc *mmc);
 524 int board_mmc_getcd(struct mmc *mmc);
 525 int mmc_getwp(struct mmc *mmc);
 526 int board_mmc_getwp(struct mmc *mmc);
 527 #endif
 528
 529 int mmc_set_dsr(struct mmc *mmc, u16 val);
 530 /* Function to change the size of boot partition and rpmb partitions */
 531 int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
 532                                         unsigned long rpmbsize);
 533 /* Function to modify the PARTITION_CONFIG field of EXT_CSD */
 534 int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
 535 /* Function to modify the BOOT_BUS_WIDTH field of EXT_CSD */
 536 int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode);
 537 /* Function to modify the RST_n_FUNCTION field of EXT_CSD */
 538 int mmc_set_rst_n_function(struct mmc *mmc, u8 enable);
 539 /* Functions to read / write the RPMB partition */
 540 int mmc_rpmb_set_key(struct mmc *mmc, void *key);
 541 int mmc_rpmb_get_counter(struct mmc *mmc, unsigned long *counter);
 542 int mmc_rpmb_read(struct mmc *mmc, void *addr, unsigned short blk,
 543                   unsigned short cnt, unsigned char *key);
 544 int mmc_rpmb_write(struct mmc *mmc, void *addr, unsigned short blk,
 545                    unsigned short cnt, unsigned char *key);
 546 #ifdef CONFIG_CMD_BKOPS_ENABLE
 547 int mmc_set_bkops_enable(struct mmc *mmc);
 548 #endif
 549
 550 /**
 551  * Start device initialization and return immediately; it does not block on
 552  * polling OCR (operation condition register) status.  Then you should call
 553  * mmc_init, which would block on polling OCR status and complete the device
 554  * initializatin.
 555  *
 556  * @param mmc   Pointer to a MMC device struct
 557  * @return 0 on success, IN_PROGRESS on waiting for OCR status, <0 on error.
 558  */
 559 int mmc_start_init(struct mmc *mmc);
 560
 561 /**
 562  * Set preinit flag of mmc device.
 563  *
 564  * This will cause the device to be pre-inited during mmc_initialize(),
 565  * which may save boot time if the device is not accessed until later.
 566  * Some eMMC devices take 200-300ms to init, but unfortunately they
 567  * must be sent a series of commands to even get them to start preparing
 568  * for operation.
 569  *
 570  * @param mmc           Pointer to a MMC device struct
 571  * @param preinit       preinit flag value
 572  */
 573 void mmc_set_preinit(struct mmc *mmc, int preinit);
 574
 575 #ifdef CONFIG_MMC_SPI
 576 #define mmc_host_is_spi(mmc)    ((mmc)->cfg->host_caps & MMC_MODE_SPI)
 577 #else
 578 #define mmc_host_is_spi(mmc)    0
 579 #endif
 580 struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
 581
 582 void board_mmc_power_init(void);
 583 int board_mmc_init(bd_t *bis);
 584 int cpu_mmc_init(bd_t *bis);
 585 int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr);
 586 int mmc_get_env_dev(void);
 587
 588 struct pci_device_id;
 589
 590 /**
 591  * pci_mmc_init() - set up PCI MMC devices
 592  *
 593  * This finds all the matching PCI IDs and sets them up as MMC devices.
 594  *
 595  * @name:               Name to use for devices
 596  * @mmc_supported:      PCI IDs to search for, terminated by {0, 0}
 597  */
 598 int pci_mmc_init(const char *name, struct pci_device_id *mmc_supported);
 599
 600 /* Set block count limit because of 16 bit register limit on some hardware*/
 601 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
 602 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
 603 #endif
 604
 605 /**
 606  * mmc_get_blk_desc() - Get the block descriptor for an MMC device
 607  *
 608  * @mmc:        MMC device
 609  * @return block device if found, else NULL
 610  */
 611 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc);
 612
 613 #endif /* _MMC_H_ */