include/mmc.h

   1 /*
   2  * Copyright 2008, Freescale Semiconductor, Inc
   3  * Andy Fleming
   4  *
   5  * Based (loosely) on the Linux code
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #ifndef _MMC_H_
  27 #define _MMC_H_
  28
  29 #include <linux/list.h>
  30
  31 #define SD_VERSION_SD   0x20000
  32 #define SD_VERSION_2    (SD_VERSION_SD | 0x20)
  33 #define SD_VERSION_1_0  (SD_VERSION_SD | 0x10)
  34 #define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)
  35 #define MMC_VERSION_MMC         0x10000
  36 #define MMC_VERSION_UNKNOWN     (MMC_VERSION_MMC)
  37 #define MMC_VERSION_1_2         (MMC_VERSION_MMC | 0x12)
  38 #define MMC_VERSION_1_4         (MMC_VERSION_MMC | 0x14)
  39 #define MMC_VERSION_2_2         (MMC_VERSION_MMC | 0x22)
  40 #define MMC_VERSION_3           (MMC_VERSION_MMC | 0x30)
  41 #define MMC_VERSION_4           (MMC_VERSION_MMC | 0x40)
  42
  43 #define MMC_MODE_HS             0x001
  44 #define MMC_MODE_HS_52MHz       0x010
  45 #define MMC_MODE_4BIT           0x100
  46 #define MMC_MODE_8BIT           0x200
  47
  48 #define SD_DATA_4BIT    0x00040000
  49
  50 #define IS_SD(x) (x->version & SD_VERSION_SD)
  51
  52 #define MMC_DATA_READ           1
  53 #define MMC_DATA_WRITE          2
  54
  55 #define NO_CARD_ERR             -16 /* No SD/MMC card inserted */
  56 #define UNUSABLE_ERR            -17 /* Unusable Card */
  57 #define COMM_ERR                -18 /* Communications Error */
  58 #define TIMEOUT                 -19
  59
  60 #define MMC_CMD_GO_IDLE_STATE           0
  61 #define MMC_CMD_SEND_OP_COND            1
  62 #define MMC_CMD_ALL_SEND_CID            2
  63 #define MMC_CMD_SET_RELATIVE_ADDR       3
  64 #define MMC_CMD_SET_DSR                 4
  65 #define MMC_CMD_SWITCH                  6
  66 #define MMC_CMD_SELECT_CARD             7
  67 #define MMC_CMD_SEND_EXT_CSD            8
  68 #define MMC_CMD_SEND_CSD                9
  69 #define MMC_CMD_SEND_CID                10
  70 #define MMC_CMD_STOP_TRANSMISSION       12
  71 #define MMC_CMD_SEND_STATUS             13
  72 #define MMC_CMD_SET_BLOCKLEN            16
  73 #define MMC_CMD_READ_SINGLE_BLOCK       17
  74 #define MMC_CMD_READ_MULTIPLE_BLOCK     18
  75 #define MMC_CMD_WRITE_SINGLE_BLOCK      24
  76 #define MMC_CMD_WRITE_MULTIPLE_BLOCK    25
  77 #define MMC_CMD_APP_CMD                 55
  78
  79 #define SD_CMD_SEND_RELATIVE_ADDR       3
  80 #define SD_CMD_SWITCH_FUNC              6
  81 #define SD_CMD_SEND_IF_COND             8
  82
  83 #define SD_CMD_APP_SET_BUS_WIDTH        6
  84 #define SD_CMD_APP_SEND_OP_COND         41
  85 #define SD_CMD_APP_SEND_SCR             51
  86
  87 /* SCR definitions in different words */
  88 #define SD_HIGHSPEED_BUSY       0x00020000
  89 #define SD_HIGHSPEED_SUPPORTED  0x00020000
  90
  91 #define MMC_HS_TIMING           0x00000100
  92 #define MMC_HS_52MHZ            0x2
  93
  94 #define OCR_BUSY        0x80000000
  95 #define OCR_HCS         0x40000000
  96
  97 #define MMC_VDD_165_195         0x00000080      /* VDD voltage 1.65 - 1.95 */
  98 #define MMC_VDD_20_21           0x00000100      /* VDD voltage 2.0 ~ 2.1 */
  99 #define MMC_VDD_21_22           0x00000200      /* VDD voltage 2.1 ~ 2.2 */
 100 #define MMC_VDD_22_23           0x00000400      /* VDD voltage 2.2 ~ 2.3 */
 101 #define MMC_VDD_23_24           0x00000800      /* VDD voltage 2.3 ~ 2.4 */
 102 #define MMC_VDD_24_25           0x00001000      /* VDD voltage 2.4 ~ 2.5 */
 103 #define MMC_VDD_25_26           0x00002000      /* VDD voltage 2.5 ~ 2.6 */
 104 #define MMC_VDD_26_27           0x00004000      /* VDD voltage 2.6 ~ 2.7 */
 105 #define MMC_VDD_27_28           0x00008000      /* VDD voltage 2.7 ~ 2.8 */
 106 #define MMC_VDD_28_29           0x00010000      /* VDD voltage 2.8 ~ 2.9 */
 107 #define MMC_VDD_29_30           0x00020000      /* VDD voltage 2.9 ~ 3.0 */
 108 #define MMC_VDD_30_31           0x00040000      /* VDD voltage 3.0 ~ 3.1 */
 109 #define MMC_VDD_31_32           0x00080000      /* VDD voltage 3.1 ~ 3.2 */
 110 #define MMC_VDD_32_33           0x00100000      /* VDD voltage 3.2 ~ 3.3 */
 111 #define MMC_VDD_33_34           0x00200000      /* VDD voltage 3.3 ~ 3.4 */
 112 #define MMC_VDD_34_35           0x00400000      /* VDD voltage 3.4 ~ 3.5 */
 113 #define MMC_VDD_35_36           0x00800000      /* VDD voltage 3.5 ~ 3.6 */
 114
 115 #define MMC_SWITCH_MODE_CMD_SET         0x00 /* Change the command set */
 116 #define MMC_SWITCH_MODE_SET_BITS        0x01 /* Set bits in EXT_CSD byte
 117                                                 addressed by index which are
 118                                                 1 in value field */
 119 #define MMC_SWITCH_MODE_CLEAR_BITS      0x02 /* Clear bits in EXT_CSD byte
 120                                                 addressed by index, which are
 121                                                 1 in value field */
 122 #define MMC_SWITCH_MODE_WRITE_BYTE      0x03 /* Set target byte to value */
 123
 124 #define SD_SWITCH_CHECK         0
 125 #define SD_SWITCH_SWITCH        1
 126
 127 /*
 128  * EXT_CSD fields
 129  */
 130
 131 #define EXT_CSD_BUS_WIDTH       183     /* R/W */
 132 #define EXT_CSD_HS_TIMING       185     /* R/W */
 133 #define EXT_CSD_CARD_TYPE       196     /* RO */
 134 #define EXT_CSD_REV             192     /* RO */
 135 #define EXT_CSD_SEC_CNT         212     /* RO, 4 bytes */
 136
 137 /*
 138  * EXT_CSD field definitions
 139  */
 140
 141 #define EXT_CSD_CMD_SET_NORMAL          (1<<0)
 142 #define EXT_CSD_CMD_SET_SECURE          (1<<1)
 143 #define EXT_CSD_CMD_SET_CPSECURE        (1<<2)
 144
 145 #define EXT_CSD_CARD_TYPE_26    (1<<0)  /* Card can run at 26MHz */
 146 #define EXT_CSD_CARD_TYPE_52    (1<<1)  /* Card can run at 52MHz */
 147
 148 #define EXT_CSD_BUS_WIDTH_1     0       /* Card is in 1 bit mode */
 149 #define EXT_CSD_BUS_WIDTH_4     1       /* Card is in 4 bit mode */
 150 #define EXT_CSD_BUS_WIDTH_8     2       /* Card is in 8 bit mode */
 151
 152 #define R1_ILLEGAL_COMMAND              (1 << 22)
 153 #define R1_APP_CMD                      (1 << 5)
 154
 155 #define MMC_RSP_PRESENT (1 << 0)
 156 #define MMC_RSP_136     (1 << 1)                /* 136 bit response */
 157 #define MMC_RSP_CRC     (1 << 2)                /* expect valid crc */
 158 #define MMC_RSP_BUSY    (1 << 3)                /* card may send busy */
 159 #define MMC_RSP_OPCODE  (1 << 4)                /* response contains opcode */
 160
 161 #define MMC_RSP_NONE    (0)
 162 #define MMC_RSP_R1      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 163 #define MMC_RSP_R1b     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
 164                         MMC_RSP_BUSY)
 165 #define MMC_RSP_R2      (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
 166 #define MMC_RSP_R3      (MMC_RSP_PRESENT)
 167 #define MMC_RSP_R4      (MMC_RSP_PRESENT)
 168 #define MMC_RSP_R5      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 169 #define MMC_RSP_R6      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 170 #define MMC_RSP_R7      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 171
 172
 173 struct mmc_cid {
 174         unsigned long psn;
 175         unsigned short oid;
 176         unsigned char mid;
 177         unsigned char prv;
 178         unsigned char mdt;
 179         char pnm[7];
 180 };
 181
 182 struct mmc_csd
 183 {
 184         u8      csd_structure:2,
 185                 spec_vers:4,
 186                 rsvd1:2;
 187         u8      taac;
 188         u8      nsac;
 189         u8      tran_speed;
 190         u16     ccc:12,
 191                 read_bl_len:4;
 192         u64     read_bl_partial:1,
 193                 write_blk_misalign:1,
 194                 read_blk_misalign:1,
 195                 dsr_imp:1,
 196                 rsvd2:2,
 197                 c_size:12,
 198                 vdd_r_curr_min:3,
 199                 vdd_r_curr_max:3,
 200                 vdd_w_curr_min:3,
 201                 vdd_w_curr_max:3,
 202                 c_size_mult:3,
 203                 sector_size:5,
 204                 erase_grp_size:5,
 205                 wp_grp_size:5,
 206                 wp_grp_enable:1,
 207                 default_ecc:2,
 208                 r2w_factor:3,
 209                 write_bl_len:4,
 210                 write_bl_partial:1,
 211                 rsvd3:5;
 212         u8      file_format_grp:1,
 213                 copy:1,
 214                 perm_write_protect:1,
 215                 tmp_write_protect:1,
 216                 file_format:2,
 217                 ecc:2;
 218         u8      crc:7;
 219         u8      one:1;
 220 };
 221
 222 struct mmc_cmd {
 223         ushort cmdidx;
 224         uint resp_type;
 225         uint cmdarg;
 226         uint response[4];
 227         uint flags;
 228 };
 229
 230 struct mmc_data {
 231         union {
 232                 char *dest;
 233                 const char *src; /* src buffers don't get written to */
 234         };
 235         uint flags;
 236         uint blocks;
 237         uint blocksize;
 238 };
 239
 240 struct mmc {
 241         struct list_head link;
 242         char name[32];
 243         void *priv;
 244         uint voltages;
 245         uint version;
 246         uint f_min;
 247         uint f_max;
 248         int high_capacity;
 249         uint bus_width;
 250         uint clock;
 251         uint card_caps;
 252         uint host_caps;
 253         uint ocr;
 254         uint scr[2];
 255         uint csd[4];
 256         uint cid[4];
 257         ushort rca;
 258         uint tran_speed;
 259         uint read_bl_len;
 260         uint write_bl_len;
 261         u64 capacity;
 262         block_dev_desc_t block_dev;
 263         int (*send_cmd)(struct mmc *mmc,
 264                         struct mmc_cmd *cmd, struct mmc_data *data);
 265         void (*set_ios)(struct mmc *mmc);
 266         int (*init)(struct mmc *mmc);
 267 };
 268
 269 int mmc_register(struct mmc *mmc);
 270 int mmc_initialize(bd_t *bis);
 271 int mmc_init(struct mmc *mmc);
 272 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
 273 struct mmc *find_mmc_device(int dev_num);
 274 void print_mmc_devices(char separator);
 275
 276 #ifndef CONFIG_GENERIC_MMC
 277 int mmc_legacy_init(int verbose);
 278 #endif
 279 #endif /* _MMC_H_ */