include/linux/mmc/protocol.h

   1 /*
   2  * Header for MultiMediaCard (MMC)
   3  *
   4  * Copyright 2002 Hewlett-Packard Company
   5  *
   6  * Use consistent with the GNU GPL is permitted,
   7  * provided that this copyright notice is
   8  * preserved in its entirety in all copies and derived works.
   9  *
  10  * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
  11  * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
  12  * FITNESS FOR ANY PARTICULAR PURPOSE.
  13  *
  14  * Many thanks to Alessandro Rubini and Jonathan Corbet!
  15  *
  16  * Based strongly on code by:
  17  *
  18  * Author: Yong-iL Joh <tolkien@mizi.com>
  19  * Date  : $Date: 2002/06/18 12:37:30 $
  20  *
  21  * Author:  Andrew Christian
  22  *          15 May 2002
  23  */
  24
  25 #ifndef MMC_MMC_PROTOCOL_H
  26 #define MMC_MMC_PROTOCOL_H
  27
  28 /* Standard MMC commands (3.1)           type  argument     response */
  29    /* class 1 */
  30 #define MMC_GO_IDLE_STATE         0   /* bc                          */
  31 #define MMC_SEND_OP_COND          1   /* bcr  [31:0] OCR         R3  */
  32 #define MMC_ALL_SEND_CID          2   /* bcr                     R2  */
  33 #define MMC_SET_RELATIVE_ADDR     3   /* ac   [31:16] RCA        R1  */
  34 #define MMC_SET_DSR               4   /* bc   [31:16] RCA            */
  35 #define MMC_SELECT_CARD           7   /* ac   [31:16] RCA        R1  */
  36 #define MMC_SEND_CSD              9   /* ac   [31:16] RCA        R2  */
  37 #define MMC_SEND_CID             10   /* ac   [31:16] RCA        R2  */
  38 #define MMC_READ_DAT_UNTIL_STOP  11   /* adtc [31:0] dadr        R1  */
  39 #define MMC_STOP_TRANSMISSION    12   /* ac                      R1b */
  40 #define MMC_SEND_STATUS          13   /* ac   [31:16] RCA        R1  */
  41 #define MMC_GO_INACTIVE_STATE    15   /* ac   [31:16] RCA            */
  42
  43   /* class 2 */
  44 #define MMC_SET_BLOCKLEN         16   /* ac   [31:0] block len   R1  */
  45 #define MMC_READ_SINGLE_BLOCK    17   /* adtc [31:0] data addr   R1  */
  46 #define MMC_READ_MULTIPLE_BLOCK  18   /* adtc [31:0] data addr   R1  */
  47
  48   /* class 3 */
  49 #define MMC_WRITE_DAT_UNTIL_STOP 20   /* adtc [31:0] data addr   R1  */
  50
  51   /* class 4 */
  52 #define MMC_SET_BLOCK_COUNT      23   /* adtc [31:0] data addr   R1  */
  53 #define MMC_WRITE_BLOCK          24   /* adtc [31:0] data addr   R1  */
  54 #define MMC_WRITE_MULTIPLE_BLOCK 25   /* adtc                    R1  */
  55 #define MMC_PROGRAM_CID          26   /* adtc                    R1  */
  56 #define MMC_PROGRAM_CSD          27   /* adtc                    R1  */
  57
  58   /* class 6 */
  59 #define MMC_SET_WRITE_PROT       28   /* ac   [31:0] data addr   R1b */
  60 #define MMC_CLR_WRITE_PROT       29   /* ac   [31:0] data addr   R1b */
  61 #define MMC_SEND_WRITE_PROT      30   /* adtc [31:0] wpdata addr R1  */
  62
  63   /* class 5 */
  64 #define MMC_ERASE_GROUP_START    35   /* ac   [31:0] data addr   R1  */
  65 #define MMC_ERASE_GROUP_END      36   /* ac   [31:0] data addr   R1  */
  66 #define MMC_ERASE                38   /* ac                      R1b */
  67
  68   /* class 9 */
  69 #define MMC_FAST_IO              39   /* ac   <Complex>          R4  */
  70 #define MMC_GO_IRQ_STATE         40   /* bcr                     R5  */
  71
  72   /* class 7 */
  73 #define MMC_LOCK_UNLOCK          42   /* adtc                    R1b */
  74
  75   /* class 8 */
  76 #define MMC_APP_CMD              55   /* ac   [31:16] RCA        R1  */
  77 #define MMC_GEN_CMD              56   /* adtc [0] RD/WR          R1  */
  78
  79 /* SD commands                           type  argument     response */
  80   /* class 8 */
  81 /* This is basically the same command as for MMC with some quirks. */
  82 #define SD_SEND_RELATIVE_ADDR     3   /* ac                      R6  */
  83
  84   /* Application commands */
  85 #define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
  86 #define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */
  87 #define SD_APP_SEND_SCR          51   /* adtc                    R1  */
  88
  89 /*
  90   MMC status in R1
  91   Type
  92         e : error bit
  93         s : status bit
  94         r : detected and set for the actual command response
  95         x : detected and set during command execution. the host must poll
  96             the card by sending status command in order to read these bits.
  97   Clear condition
  98         a : according to the card state
  99         b : always related to the previous command. Reception of
 100             a valid command will clear it (with a delay of one command)
 101         c : clear by read
 102  */
 103
 104 #define R1_OUT_OF_RANGE         (1 << 31)       /* er, c */
 105 #define R1_ADDRESS_ERROR        (1 << 30)       /* erx, c */
 106 #define R1_BLOCK_LEN_ERROR      (1 << 29)       /* er, c */
 107 #define R1_ERASE_SEQ_ERROR      (1 << 28)       /* er, c */
 108 #define R1_ERASE_PARAM          (1 << 27)       /* ex, c */
 109 #define R1_WP_VIOLATION         (1 << 26)       /* erx, c */
 110 #define R1_CARD_IS_LOCKED       (1 << 25)       /* sx, a */
 111 #define R1_LOCK_UNLOCK_FAILED   (1 << 24)       /* erx, c */
 112 #define R1_COM_CRC_ERROR        (1 << 23)       /* er, b */
 113 #define R1_ILLEGAL_COMMAND      (1 << 22)       /* er, b */
 114 #define R1_CARD_ECC_FAILED      (1 << 21)       /* ex, c */
 115 #define R1_CC_ERROR             (1 << 20)       /* erx, c */
 116 #define R1_ERROR                (1 << 19)       /* erx, c */
 117 #define R1_UNDERRUN             (1 << 18)       /* ex, c */
 118 #define R1_OVERRUN              (1 << 17)       /* ex, c */
 119 #define R1_CID_CSD_OVERWRITE    (1 << 16)       /* erx, c, CID/CSD overwrite */
 120 #define R1_WP_ERASE_SKIP        (1 << 15)       /* sx, c */
 121 #define R1_CARD_ECC_DISABLED    (1 << 14)       /* sx, a */
 122 #define R1_ERASE_RESET          (1 << 13)       /* sr, c */
 123 #define R1_STATUS(x)            (x & 0xFFFFE000)
 124 #define R1_CURRENT_STATE(x)     ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
 125 #define R1_READY_FOR_DATA       (1 << 8)        /* sx, a */
 126 #define R1_APP_CMD              (1 << 5)        /* sr, c */
 127
 128 /* These are unpacked versions of the actual responses */
 129
 130 struct _mmc_csd {
 131         u8  csd_structure;
 132         u8  spec_vers;
 133         u8  taac;
 134         u8  nsac;
 135         u8  tran_speed;
 136         u16 ccc;
 137         u8  read_bl_len;
 138         u8  read_bl_partial;
 139         u8  write_blk_misalign;
 140         u8  read_blk_misalign;
 141         u8  dsr_imp;
 142         u16 c_size;
 143         u8  vdd_r_curr_min;
 144         u8  vdd_r_curr_max;
 145         u8  vdd_w_curr_min;
 146         u8  vdd_w_curr_max;
 147         u8  c_size_mult;
 148         union {
 149                 struct { /* MMC system specification version 3.1 */
 150                         u8  erase_grp_size;
 151                         u8  erase_grp_mult;
 152                 } v31;
 153                 struct { /* MMC system specification version 2.2 */
 154                         u8  sector_size;
 155                         u8  erase_grp_size;
 156                 } v22;
 157         } erase;
 158         u8  wp_grp_size;
 159         u8  wp_grp_enable;
 160         u8  default_ecc;
 161         u8  r2w_factor;
 162         u8  write_bl_len;
 163         u8  write_bl_partial;
 164         u8  file_format_grp;
 165         u8  copy;
 166         u8  perm_write_protect;
 167         u8  tmp_write_protect;
 168         u8  file_format;
 169         u8  ecc;
 170 };
 171
 172 #define MMC_VDD_145_150 0x00000001      /* VDD voltage 1.45 - 1.50 */
 173 #define MMC_VDD_150_155 0x00000002      /* VDD voltage 1.50 - 1.55 */
 174 #define MMC_VDD_155_160 0x00000004      /* VDD voltage 1.55 - 1.60 */
 175 #define MMC_VDD_160_165 0x00000008      /* VDD voltage 1.60 - 1.65 */
 176 #define MMC_VDD_165_170 0x00000010      /* VDD voltage 1.65 - 1.70 */
 177 #define MMC_VDD_17_18   0x00000020      /* VDD voltage 1.7 - 1.8 */
 178 #define MMC_VDD_18_19   0x00000040      /* VDD voltage 1.8 - 1.9 */
 179 #define MMC_VDD_19_20   0x00000080      /* VDD voltage 1.9 - 2.0 */
 180 #define MMC_VDD_20_21   0x00000100      /* VDD voltage 2.0 ~ 2.1 */
 181 #define MMC_VDD_21_22   0x00000200      /* VDD voltage 2.1 ~ 2.2 */
 182 #define MMC_VDD_22_23   0x00000400      /* VDD voltage 2.2 ~ 2.3 */
 183 #define MMC_VDD_23_24   0x00000800      /* VDD voltage 2.3 ~ 2.4 */
 184 #define MMC_VDD_24_25   0x00001000      /* VDD voltage 2.4 ~ 2.5 */
 185 #define MMC_VDD_25_26   0x00002000      /* VDD voltage 2.5 ~ 2.6 */
 186 #define MMC_VDD_26_27   0x00004000      /* VDD voltage 2.6 ~ 2.7 */
 187 #define MMC_VDD_27_28   0x00008000      /* VDD voltage 2.7 ~ 2.8 */
 188 #define MMC_VDD_28_29   0x00010000      /* VDD voltage 2.8 ~ 2.9 */
 189 #define MMC_VDD_29_30   0x00020000      /* VDD voltage 2.9 ~ 3.0 */
 190 #define MMC_VDD_30_31   0x00040000      /* VDD voltage 3.0 ~ 3.1 */
 191 #define MMC_VDD_31_32   0x00080000      /* VDD voltage 3.1 ~ 3.2 */
 192 #define MMC_VDD_32_33   0x00100000      /* VDD voltage 3.2 ~ 3.3 */
 193 #define MMC_VDD_33_34   0x00200000      /* VDD voltage 3.3 ~ 3.4 */
 194 #define MMC_VDD_34_35   0x00400000      /* VDD voltage 3.4 ~ 3.5 */
 195 #define MMC_VDD_35_36   0x00800000      /* VDD voltage 3.5 ~ 3.6 */
 196 #define MMC_CARD_BUSY   0x80000000      /* Card Power up status bit */
 197
 198 /*
 199  * Card Command Classes (CCC)
 200  */
 201 #define CCC_BASIC               (1<<0)  /* (0) Basic protocol functions */
 202                                         /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
 203 #define CCC_STREAM_READ         (1<<1)  /* (1) Stream read commands */
 204                                         /* (CMD11) */
 205 #define CCC_BLOCK_READ          (1<<2)  /* (2) Block read commands */
 206                                         /* (CMD16,17,18) */
 207 #define CCC_STREAM_WRITE        (1<<3)  /* (3) Stream write commands */
 208                                         /* (CMD20) */
 209 #define CCC_BLOCK_WRITE         (1<<4)  /* (4) Block write commands */
 210                                         /* (CMD16,24,25,26,27) */
 211 #define CCC_ERASE               (1<<5)  /* (5) Ability to erase blocks */
 212                                         /* (CMD32,33,34,35,36,37,38,39) */
 213 #define CCC_WRITE_PROT          (1<<6)  /* (6) Able to write protect blocks */
 214                                         /* (CMD28,29,30) */
 215 #define CCC_LOCK_CARD           (1<<7)  /* (7) Able to lock down card */
 216                                         /* (CMD16,CMD42) */
 217 #define CCC_APP_SPEC            (1<<8)  /* (8) Application specific */
 218                                         /* (CMD55,56,57,ACMD*) */
 219 #define CCC_IO_MODE             (1<<9)  /* (9) I/O mode */
 220                                         /* (CMD5,39,40,52,53) */
 221 #define CCC_SWITCH              (1<<10) /* (10) High speed switch */
 222                                         /* (CMD6,34,35,36,37,50) */
 223                                         /* (11) Reserved */
 224                                         /* (CMD?) */
 225
 226 /*
 227  * CSD field definitions
 228  */
 229
 230 #define CSD_STRUCT_VER_1_0  0           /* Valid for system specification 1.0 - 1.2 */
 231 #define CSD_STRUCT_VER_1_1  1           /* Valid for system specification 1.4 - 2.2 */
 232 #define CSD_STRUCT_VER_1_2  2           /* Valid for system specification 3.1       */
 233
 234 #define CSD_SPEC_VER_0      0           /* Implements system specification 1.0 - 1.2 */
 235 #define CSD_SPEC_VER_1      1           /* Implements system specification 1.4 */
 236 #define CSD_SPEC_VER_2      2           /* Implements system specification 2.0 - 2.2 */
 237 #define CSD_SPEC_VER_3      3           /* Implements system specification 3.1 */
 238
 239
 240 /*
 241  * SD bus widths
 242  */
 243 #define SD_BUS_WIDTH_1      0
 244 #define SD_BUS_WIDTH_4      2
 245
 246 #endif  /* MMC_MMC_PROTOCOL_H */
 247