1 /* 2 * Copyright 2008,2010 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 #define MMC_MODE_SPI 0x400 48 49 #define SD_DATA_4BIT 0x00040000 50 51 #define IS_SD(x) (x->version & SD_VERSION_SD) 52 53 #define MMC_DATA_READ 1 54 #define MMC_DATA_WRITE 2 55 56 #define NO_CARD_ERR -16 /* No SD/MMC card inserted */ 57 #define UNUSABLE_ERR -17 /* Unusable Card */ 58 #define COMM_ERR -18 /* Communications Error */ 59 #define TIMEOUT -19 60 61 #define MMC_CMD_GO_IDLE_STATE 0 62 #define MMC_CMD_SEND_OP_COND 1 63 #define MMC_CMD_ALL_SEND_CID 2 64 #define MMC_CMD_SET_RELATIVE_ADDR 3 65 #define MMC_CMD_SET_DSR 4 66 #define MMC_CMD_SWITCH 6 67 #define MMC_CMD_SELECT_CARD 7 68 #define MMC_CMD_SEND_EXT_CSD 8 69 #define MMC_CMD_SEND_CSD 9 70 #define MMC_CMD_SEND_CID 10 71 #define MMC_CMD_STOP_TRANSMISSION 12 72 #define MMC_CMD_SEND_STATUS 13 73 #define MMC_CMD_SET_BLOCKLEN 16 74 #define MMC_CMD_READ_SINGLE_BLOCK 17 75 #define MMC_CMD_READ_MULTIPLE_BLOCK 18 76 #define MMC_CMD_WRITE_SINGLE_BLOCK 24 77 #define MMC_CMD_WRITE_MULTIPLE_BLOCK 25 78 #define MMC_CMD_APP_CMD 55 79 #define MMC_CMD_SPI_READ_OCR 58 80 #define MMC_CMD_SPI_CRC_ON_OFF 59 81 82 #define SD_CMD_SEND_RELATIVE_ADDR 3 83 #define SD_CMD_SWITCH_FUNC 6 84 #define SD_CMD_SEND_IF_COND 8 85 86 #define SD_CMD_APP_SET_BUS_WIDTH 6 87 #define SD_CMD_APP_SEND_OP_COND 41 88 #define SD_CMD_APP_SEND_SCR 51 89 90 /* SCR definitions in different words */ 91 #define SD_HIGHSPEED_BUSY 0x00020000 92 #define SD_HIGHSPEED_SUPPORTED 0x00020000 93 94 #define MMC_HS_TIMING 0x00000100 95 #define MMC_HS_52MHZ 0x2 96 97 #define OCR_BUSY 0x80000000 98 #define OCR_HCS 0x40000000 99 100 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ 101 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ 102 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ 103 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ 104 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ 105 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ 106 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ 107 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ 108 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ 109 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ 110 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ 111 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ 112 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ 113 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ 114 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ 115 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ 116 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ 117 118 #define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */ 119 #define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits in EXT_CSD byte 120 addressed by index which are 121 1 in value field */ 122 #define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits in EXT_CSD byte 123 addressed by index, which are 124 1 in value field */ 125 #define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target byte to value */ 126 127 #define SD_SWITCH_CHECK 0 128 #define SD_SWITCH_SWITCH 1 129 130 /* 131 * EXT_CSD fields 132 */ 133 134 #define EXT_CSD_BUS_WIDTH 183 /* R/W */ 135 #define EXT_CSD_HS_TIMING 185 /* R/W */ 136 #define EXT_CSD_CARD_TYPE 196 /* RO */ 137 #define EXT_CSD_REV 192 /* RO */ 138 #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */ 139 140 /* 141 * EXT_CSD field definitions 142 */ 143 144 #define EXT_CSD_CMD_SET_NORMAL (1<<0) 145 #define EXT_CSD_CMD_SET_SECURE (1<<1) 146 #define EXT_CSD_CMD_SET_CPSECURE (1<<2) 147 148 #define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */ 149 #define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */ 150 151 #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */ 152 #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */ 153 #define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */ 154 155 #define R1_ILLEGAL_COMMAND (1 << 22) 156 #define R1_APP_CMD (1 << 5) 157 158 #define MMC_RSP_PRESENT (1 << 0) 159 #define MMC_RSP_136 (1 << 1) /* 136 bit response */ 160 #define MMC_RSP_CRC (1 << 2) /* expect valid crc */ 161 #define MMC_RSP_BUSY (1 << 3) /* card may send busy */ 162 #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */ 163 164 #define MMC_RSP_NONE (0) 165 #define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) 166 #define MMC_RSP_R1b (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \ 167 MMC_RSP_BUSY) 168 #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC) 169 #define MMC_RSP_R3 (MMC_RSP_PRESENT) 170 #define MMC_RSP_R4 (MMC_RSP_PRESENT) 171 #define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) 172 #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) 173 #define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) 174 175 176 struct mmc_cid { 177 unsigned long psn; 178 unsigned short oid; 179 unsigned char mid; 180 unsigned char prv; 181 unsigned char mdt; 182 char pnm[7]; 183 }; 184 185 /* 186 * WARNING! 187 * 188 * This structure is used by atmel_mci.c only. 189 * It works for the AVR32 architecture but NOT 190 * for ARM/AT91 architectures. 191 * Its use is highly depreciated. 192 * After the atmel_mci.c driver for AVR32 has 193 * been replaced this structure will be removed. 194 */ 195 struct mmc_csd 196 { 197 u8 csd_structure:2, 198 spec_vers:4, 199 rsvd1:2; 200 u8 taac; 201 u8 nsac; 202 u8 tran_speed; 203 u16 ccc:12, 204 read_bl_len:4; 205 u64 read_bl_partial:1, 206 write_blk_misalign:1, 207 read_blk_misalign:1, 208 dsr_imp:1, 209 rsvd2:2, 210 c_size:12, 211 vdd_r_curr_min:3, 212 vdd_r_curr_max:3, 213 vdd_w_curr_min:3, 214 vdd_w_curr_max:3, 215 c_size_mult:3, 216 sector_size:5, 217 erase_grp_size:5, 218 wp_grp_size:5, 219 wp_grp_enable:1, 220 default_ecc:2, 221 r2w_factor:3, 222 write_bl_len:4, 223 write_bl_partial:1, 224 rsvd3:5; 225 u8 file_format_grp:1, 226 copy:1, 227 perm_write_protect:1, 228 tmp_write_protect:1, 229 file_format:2, 230 ecc:2; 231 u8 crc:7; 232 u8 one:1; 233 }; 234 235 struct mmc_cmd { 236 ushort cmdidx; 237 uint resp_type; 238 uint cmdarg; 239 uint response[4]; 240 uint flags; 241 }; 242 243 struct mmc_data { 244 union { 245 char *dest; 246 const char *src; /* src buffers don't get written to */ 247 }; 248 uint flags; 249 uint blocks; 250 uint blocksize; 251 }; 252 253 struct mmc { 254 struct list_head link; 255 char name[32]; 256 void *priv; 257 uint voltages; 258 uint version; 259 uint f_min; 260 uint f_max; 261 int high_capacity; 262 uint bus_width; 263 uint clock; 264 uint card_caps; 265 uint host_caps; 266 uint ocr; 267 uint scr[2]; 268 uint csd[4]; 269 uint cid[4]; 270 ushort rca; 271 uint tran_speed; 272 uint read_bl_len; 273 uint write_bl_len; 274 u64 capacity; 275 block_dev_desc_t block_dev; 276 int (*send_cmd)(struct mmc *mmc, 277 struct mmc_cmd *cmd, struct mmc_data *data); 278 void (*set_ios)(struct mmc *mmc); 279 int (*init)(struct mmc *mmc); 280 #ifdef CONFIG_MMC_MBLOCK 281 uint b_max; 282 #endif 283 }; 284 285 int mmc_register(struct mmc *mmc); 286 int mmc_initialize(bd_t *bis); 287 int mmc_init(struct mmc *mmc); 288 int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size); 289 void mmc_set_clock(struct mmc *mmc, uint clock); 290 struct mmc *find_mmc_device(int dev_num); 291 int mmc_set_dev(int dev_num); 292 void print_mmc_devices(char separator); 293 int board_mmc_getcd(u8 *cd, struct mmc *mmc); 294 295 #ifdef CONFIG_GENERIC_MMC 296 int atmel_mci_init(void *regs); 297 #define mmc_host_is_spi(mmc) ((mmc)->host_caps & MMC_MODE_SPI) 298 struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode); 299 #else 300 int mmc_legacy_init(int verbose); 301 #endif 302 303 #endif /* _MMC_H_ */ 304