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 int board_mmc_getcd(u8 *cd, struct mmc *mmc); 276 277 #ifndef CONFIG_GENERIC_MMC 278 int mmc_legacy_init(int verbose); 279 #endif 280 #endif /* _MMC_H_ */ 281