Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, Freescale Semiconductor, Inc |
| 3 | * Andy Fleming |
| 4 | * |
| 5 | * Based vaguely 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 | #include <config.h> |
| 27 | #include <common.h> |
| 28 | #include <command.h> |
| 29 | #include <mmc.h> |
| 30 | #include <part.h> |
| 31 | #include <malloc.h> |
| 32 | #include <linux/list.h> |
Rabin Vincent | 69d4e2c | 2009-04-05 13:30:54 +0530 | [diff] [blame] | 33 | #include <div64.h> |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 34 | |
Matt Waddel | d0e3c80 | 2011-02-24 16:35:23 +0000 | [diff] [blame] | 35 | /* Set block count limit because of 16 bit register limit on some hardware*/ |
| 36 | #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT |
| 37 | #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535 |
| 38 | #endif |
| 39 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 40 | static struct list_head mmc_devices; |
| 41 | static int cur_dev_num = -1; |
| 42 | |
Stefano Babic | 6e00edf | 2010-02-05 15:04:43 +0100 | [diff] [blame] | 43 | int __board_mmc_getcd(u8 *cd, struct mmc *mmc) { |
| 44 | return -1; |
| 45 | } |
| 46 | |
| 47 | int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak, |
| 48 | alias("__board_mmc_getcd"))); |
| 49 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 50 | int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) |
| 51 | { |
Raffaele Recalcati | 894b1e2 | 2011-03-11 02:01:14 +0000 | [diff] [blame] | 52 | #ifdef CONFIG_MMC_TRACE |
| 53 | int ret; |
| 54 | int i; |
| 55 | u8 *ptr; |
| 56 | |
| 57 | printf("CMD_SEND:%d\n", cmd->cmdidx); |
| 58 | printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg); |
| 59 | printf("\t\tFLAG\t\t\t %d\n", cmd->flags); |
| 60 | ret = mmc->send_cmd(mmc, cmd, data); |
| 61 | switch (cmd->resp_type) { |
| 62 | case MMC_RSP_NONE: |
| 63 | printf("\t\tMMC_RSP_NONE\n"); |
| 64 | break; |
| 65 | case MMC_RSP_R1: |
| 66 | printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n", |
| 67 | cmd->response[0]); |
| 68 | break; |
| 69 | case MMC_RSP_R1b: |
| 70 | printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n", |
| 71 | cmd->response[0]); |
| 72 | break; |
| 73 | case MMC_RSP_R2: |
| 74 | printf("\t\tMMC_RSP_R2\t\t 0x%08X \n", |
| 75 | cmd->response[0]); |
| 76 | printf("\t\t \t\t 0x%08X \n", |
| 77 | cmd->response[1]); |
| 78 | printf("\t\t \t\t 0x%08X \n", |
| 79 | cmd->response[2]); |
| 80 | printf("\t\t \t\t 0x%08X \n", |
| 81 | cmd->response[3]); |
| 82 | printf("\n"); |
| 83 | printf("\t\t\t\t\tDUMPING DATA\n"); |
| 84 | for (i = 0; i < 4; i++) { |
| 85 | int j; |
| 86 | printf("\t\t\t\t\t%03d - ", i*4); |
| 87 | ptr = &cmd->response[i]; |
| 88 | ptr += 3; |
| 89 | for (j = 0; j < 4; j++) |
| 90 | printf("%02X ", *ptr--); |
| 91 | printf("\n"); |
| 92 | } |
| 93 | break; |
| 94 | case MMC_RSP_R3: |
| 95 | printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n", |
| 96 | cmd->response[0]); |
| 97 | break; |
| 98 | default: |
| 99 | printf("\t\tERROR MMC rsp not supported\n"); |
| 100 | break; |
| 101 | } |
| 102 | return ret; |
| 103 | #else |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 104 | return mmc->send_cmd(mmc, cmd, data); |
Raffaele Recalcati | 894b1e2 | 2011-03-11 02:01:14 +0000 | [diff] [blame] | 105 | #endif |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 106 | } |
| 107 | |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 108 | int mmc_send_status(struct mmc *mmc, int timeout) |
| 109 | { |
| 110 | struct mmc_cmd cmd; |
| 111 | int err; |
| 112 | #ifdef CONFIG_MMC_TRACE |
| 113 | int status; |
| 114 | #endif |
| 115 | |
| 116 | cmd.cmdidx = MMC_CMD_SEND_STATUS; |
| 117 | cmd.resp_type = MMC_RSP_R1; |
Marek Vasut | c442739 | 2011-08-10 09:24:48 +0200 | [diff] [blame] | 118 | if (!mmc_host_is_spi(mmc)) |
| 119 | cmd.cmdarg = mmc->rca << 16; |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 120 | cmd.flags = 0; |
| 121 | |
| 122 | do { |
| 123 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 124 | if (err) |
| 125 | return err; |
| 126 | else if (cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) |
| 127 | break; |
| 128 | |
| 129 | udelay(1000); |
| 130 | |
| 131 | if (cmd.response[0] & MMC_STATUS_MASK) { |
| 132 | printf("Status Error: 0x%08X\n", cmd.response[0]); |
| 133 | return COMM_ERR; |
| 134 | } |
| 135 | } while (timeout--); |
| 136 | |
Raffaele Recalcati | 894b1e2 | 2011-03-11 02:01:14 +0000 | [diff] [blame] | 137 | #ifdef CONFIG_MMC_TRACE |
| 138 | status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9; |
| 139 | printf("CURR STATE:%d\n", status); |
| 140 | #endif |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 141 | if (!timeout) { |
| 142 | printf("Timeout waiting card ready\n"); |
| 143 | return TIMEOUT; |
| 144 | } |
| 145 | |
| 146 | return 0; |
| 147 | } |
| 148 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 149 | int mmc_set_blocklen(struct mmc *mmc, int len) |
| 150 | { |
| 151 | struct mmc_cmd cmd; |
| 152 | |
| 153 | cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; |
| 154 | cmd.resp_type = MMC_RSP_R1; |
| 155 | cmd.cmdarg = len; |
| 156 | cmd.flags = 0; |
| 157 | |
| 158 | return mmc_send_cmd(mmc, &cmd, NULL); |
| 159 | } |
| 160 | |
| 161 | struct mmc *find_mmc_device(int dev_num) |
| 162 | { |
| 163 | struct mmc *m; |
| 164 | struct list_head *entry; |
| 165 | |
| 166 | list_for_each(entry, &mmc_devices) { |
| 167 | m = list_entry(entry, struct mmc, link); |
| 168 | |
| 169 | if (m->block_dev.dev == dev_num) |
| 170 | return m; |
| 171 | } |
| 172 | |
| 173 | printf("MMC Device %d not found\n", dev_num); |
| 174 | |
| 175 | return NULL; |
| 176 | } |
| 177 | |
Lei Wen | ea52676 | 2011-06-22 17:03:31 +0000 | [diff] [blame] | 178 | static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt) |
| 179 | { |
| 180 | struct mmc_cmd cmd; |
| 181 | ulong end; |
| 182 | int err, start_cmd, end_cmd; |
| 183 | |
| 184 | if (mmc->high_capacity) |
| 185 | end = start + blkcnt - 1; |
| 186 | else { |
| 187 | end = (start + blkcnt - 1) * mmc->write_bl_len; |
| 188 | start *= mmc->write_bl_len; |
| 189 | } |
| 190 | |
| 191 | if (IS_SD(mmc)) { |
| 192 | start_cmd = SD_CMD_ERASE_WR_BLK_START; |
| 193 | end_cmd = SD_CMD_ERASE_WR_BLK_END; |
| 194 | } else { |
| 195 | start_cmd = MMC_CMD_ERASE_GROUP_START; |
| 196 | end_cmd = MMC_CMD_ERASE_GROUP_END; |
| 197 | } |
| 198 | |
| 199 | cmd.cmdidx = start_cmd; |
| 200 | cmd.cmdarg = start; |
| 201 | cmd.resp_type = MMC_RSP_R1; |
| 202 | cmd.flags = 0; |
| 203 | |
| 204 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 205 | if (err) |
| 206 | goto err_out; |
| 207 | |
| 208 | cmd.cmdidx = end_cmd; |
| 209 | cmd.cmdarg = end; |
| 210 | |
| 211 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 212 | if (err) |
| 213 | goto err_out; |
| 214 | |
| 215 | cmd.cmdidx = MMC_CMD_ERASE; |
| 216 | cmd.cmdarg = SECURE_ERASE; |
| 217 | cmd.resp_type = MMC_RSP_R1b; |
| 218 | |
| 219 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 220 | if (err) |
| 221 | goto err_out; |
| 222 | |
| 223 | return 0; |
| 224 | |
| 225 | err_out: |
| 226 | puts("mmc erase failed\n"); |
| 227 | return err; |
| 228 | } |
| 229 | |
| 230 | static unsigned long |
| 231 | mmc_berase(int dev_num, unsigned long start, lbaint_t blkcnt) |
| 232 | { |
| 233 | int err = 0; |
| 234 | struct mmc *mmc = find_mmc_device(dev_num); |
| 235 | lbaint_t blk = 0, blk_r = 0; |
| 236 | |
| 237 | if (!mmc) |
| 238 | return -1; |
| 239 | |
| 240 | if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size)) |
| 241 | printf("\n\nCaution! Your devices Erase group is 0x%x\n" |
| 242 | "The erase range would be change to 0x%lx~0x%lx\n\n", |
| 243 | mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1), |
| 244 | ((start + blkcnt + mmc->erase_grp_size) |
| 245 | & ~(mmc->erase_grp_size - 1)) - 1); |
| 246 | |
| 247 | while (blk < blkcnt) { |
| 248 | blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ? |
| 249 | mmc->erase_grp_size : (blkcnt - blk); |
| 250 | err = mmc_erase_t(mmc, start + blk, blk_r); |
| 251 | if (err) |
| 252 | break; |
| 253 | |
| 254 | blk += blk_r; |
| 255 | } |
| 256 | |
| 257 | return blk; |
| 258 | } |
| 259 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 260 | static ulong |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 261 | mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 262 | { |
| 263 | struct mmc_cmd cmd; |
| 264 | struct mmc_data data; |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 265 | int timeout = 1000; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 266 | |
Lei Wen | e1cc9c8 | 2010-09-13 22:07:27 +0800 | [diff] [blame] | 267 | if ((start + blkcnt) > mmc->block_dev.lba) { |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 268 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
Lei Wen | e1cc9c8 | 2010-09-13 22:07:27 +0800 | [diff] [blame] | 269 | start + blkcnt, mmc->block_dev.lba); |
| 270 | return 0; |
| 271 | } |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 272 | |
| 273 | if (blkcnt > 1) |
| 274 | cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; |
| 275 | else |
| 276 | cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; |
| 277 | |
| 278 | if (mmc->high_capacity) |
| 279 | cmd.cmdarg = start; |
| 280 | else |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 281 | cmd.cmdarg = start * mmc->write_bl_len; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 282 | |
| 283 | cmd.resp_type = MMC_RSP_R1; |
| 284 | cmd.flags = 0; |
| 285 | |
| 286 | data.src = src; |
| 287 | data.blocks = blkcnt; |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 288 | data.blocksize = mmc->write_bl_len; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 289 | data.flags = MMC_DATA_WRITE; |
| 290 | |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 291 | if (mmc_send_cmd(mmc, &cmd, &data)) { |
| 292 | printf("mmc write failed\n"); |
| 293 | return 0; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 294 | } |
| 295 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 296 | /* SPI multiblock writes terminate using a special |
| 297 | * token, not a STOP_TRANSMISSION request. |
| 298 | */ |
| 299 | if (!mmc_host_is_spi(mmc) && blkcnt > 1) { |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 300 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
| 301 | cmd.cmdarg = 0; |
| 302 | cmd.resp_type = MMC_RSP_R1b; |
| 303 | cmd.flags = 0; |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 304 | if (mmc_send_cmd(mmc, &cmd, NULL)) { |
| 305 | printf("mmc fail to send stop cmd\n"); |
| 306 | return 0; |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 307 | } |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 308 | |
| 309 | /* Waiting for the ready status */ |
| 310 | mmc_send_status(mmc, timeout); |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | return blkcnt; |
| 314 | } |
| 315 | |
| 316 | static ulong |
| 317 | mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) |
| 318 | { |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 319 | lbaint_t cur, blocks_todo = blkcnt; |
| 320 | |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 321 | struct mmc *mmc = find_mmc_device(dev_num); |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 322 | if (!mmc) |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 323 | return 0; |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 324 | |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 325 | if (mmc_set_blocklen(mmc, mmc->write_bl_len)) |
| 326 | return 0; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 327 | |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 328 | do { |
John Rigby | f2f4366 | 2011-04-18 05:50:08 +0000 | [diff] [blame] | 329 | cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 330 | if(mmc_write_blocks(mmc, start, cur, src) != cur) |
Steve Sakoman | eb28886 | 2010-10-28 09:00:26 -0700 | [diff] [blame] | 331 | return 0; |
Lei Wen | 6b405b7 | 2010-10-14 13:38:11 +0800 | [diff] [blame] | 332 | blocks_todo -= cur; |
| 333 | start += cur; |
| 334 | src += cur * mmc->write_bl_len; |
| 335 | } while (blocks_todo > 0); |
| 336 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 337 | return blkcnt; |
| 338 | } |
| 339 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 340 | int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 341 | { |
| 342 | struct mmc_cmd cmd; |
| 343 | struct mmc_data data; |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 344 | int timeout = 1000; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 345 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 346 | if (blkcnt > 1) |
| 347 | cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; |
| 348 | else |
| 349 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 350 | |
| 351 | if (mmc->high_capacity) |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 352 | cmd.cmdarg = start; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 353 | else |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 354 | cmd.cmdarg = start * mmc->read_bl_len; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 355 | |
| 356 | cmd.resp_type = MMC_RSP_R1; |
| 357 | cmd.flags = 0; |
| 358 | |
| 359 | data.dest = dst; |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 360 | data.blocks = blkcnt; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 361 | data.blocksize = mmc->read_bl_len; |
| 362 | data.flags = MMC_DATA_READ; |
| 363 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 364 | if (mmc_send_cmd(mmc, &cmd, &data)) |
| 365 | return 0; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 366 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 367 | if (blkcnt > 1) { |
| 368 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
| 369 | cmd.cmdarg = 0; |
| 370 | cmd.resp_type = MMC_RSP_R1b; |
| 371 | cmd.flags = 0; |
| 372 | if (mmc_send_cmd(mmc, &cmd, NULL)) { |
| 373 | printf("mmc fail to send stop cmd\n"); |
| 374 | return 0; |
| 375 | } |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 376 | |
| 377 | /* Waiting for the ready status */ |
| 378 | mmc_send_status(mmc, timeout); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 379 | } |
| 380 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 381 | return blkcnt; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) |
| 385 | { |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 386 | lbaint_t cur, blocks_todo = blkcnt; |
| 387 | |
| 388 | if (blkcnt == 0) |
| 389 | return 0; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 390 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 391 | struct mmc *mmc = find_mmc_device(dev_num); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 392 | if (!mmc) |
| 393 | return 0; |
| 394 | |
Lei Wen | e1cc9c8 | 2010-09-13 22:07:27 +0800 | [diff] [blame] | 395 | if ((start + blkcnt) > mmc->block_dev.lba) { |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 396 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
Lei Wen | e1cc9c8 | 2010-09-13 22:07:27 +0800 | [diff] [blame] | 397 | start + blkcnt, mmc->block_dev.lba); |
| 398 | return 0; |
| 399 | } |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 400 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 401 | if (mmc_set_blocklen(mmc, mmc->read_bl_len)) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 402 | return 0; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 403 | |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 404 | do { |
John Rigby | f2f4366 | 2011-04-18 05:50:08 +0000 | [diff] [blame] | 405 | cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
Alagu Sankar | c25d1b9 | 2010-10-25 07:23:56 -0700 | [diff] [blame] | 406 | if(mmc_read_blocks(mmc, dst, start, cur) != cur) |
| 407 | return 0; |
| 408 | blocks_todo -= cur; |
| 409 | start += cur; |
| 410 | dst += cur * mmc->read_bl_len; |
| 411 | } while (blocks_todo > 0); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 412 | |
| 413 | return blkcnt; |
| 414 | } |
| 415 | |
| 416 | int mmc_go_idle(struct mmc* mmc) |
| 417 | { |
| 418 | struct mmc_cmd cmd; |
| 419 | int err; |
| 420 | |
| 421 | udelay(1000); |
| 422 | |
| 423 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; |
| 424 | cmd.cmdarg = 0; |
| 425 | cmd.resp_type = MMC_RSP_NONE; |
| 426 | cmd.flags = 0; |
| 427 | |
| 428 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 429 | |
| 430 | if (err) |
| 431 | return err; |
| 432 | |
| 433 | udelay(2000); |
| 434 | |
| 435 | return 0; |
| 436 | } |
| 437 | |
| 438 | int |
| 439 | sd_send_op_cond(struct mmc *mmc) |
| 440 | { |
| 441 | int timeout = 1000; |
| 442 | int err; |
| 443 | struct mmc_cmd cmd; |
| 444 | |
| 445 | do { |
| 446 | cmd.cmdidx = MMC_CMD_APP_CMD; |
| 447 | cmd.resp_type = MMC_RSP_R1; |
| 448 | cmd.cmdarg = 0; |
| 449 | cmd.flags = 0; |
| 450 | |
| 451 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 452 | |
| 453 | if (err) |
| 454 | return err; |
| 455 | |
| 456 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; |
| 457 | cmd.resp_type = MMC_RSP_R3; |
Stefano Babic | f8e9a21 | 2010-01-20 18:20:39 +0100 | [diff] [blame] | 458 | |
| 459 | /* |
| 460 | * Most cards do not answer if some reserved bits |
| 461 | * in the ocr are set. However, Some controller |
| 462 | * can set bit 7 (reserved for low voltages), but |
| 463 | * how to manage low voltages SD card is not yet |
| 464 | * specified. |
| 465 | */ |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 466 | cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : |
| 467 | (mmc->voltages & 0xff8000); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 468 | |
| 469 | if (mmc->version == SD_VERSION_2) |
| 470 | cmd.cmdarg |= OCR_HCS; |
| 471 | |
| 472 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 473 | |
| 474 | if (err) |
| 475 | return err; |
| 476 | |
| 477 | udelay(1000); |
| 478 | } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); |
| 479 | |
| 480 | if (timeout <= 0) |
| 481 | return UNUSABLE_ERR; |
| 482 | |
| 483 | if (mmc->version != SD_VERSION_2) |
| 484 | mmc->version = SD_VERSION_1_0; |
| 485 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 486 | if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ |
| 487 | cmd.cmdidx = MMC_CMD_SPI_READ_OCR; |
| 488 | cmd.resp_type = MMC_RSP_R3; |
| 489 | cmd.cmdarg = 0; |
| 490 | cmd.flags = 0; |
| 491 | |
| 492 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 493 | |
| 494 | if (err) |
| 495 | return err; |
| 496 | } |
| 497 | |
Rabin Vincent | b6eed94 | 2009-04-05 13:30:56 +0530 | [diff] [blame] | 498 | mmc->ocr = cmd.response[0]; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 499 | |
| 500 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); |
| 501 | mmc->rca = 0; |
| 502 | |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | int mmc_send_op_cond(struct mmc *mmc) |
| 507 | { |
Raffaele Recalcati | 1df837e | 2011-03-11 02:01:13 +0000 | [diff] [blame] | 508 | int timeout = 10000; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 509 | struct mmc_cmd cmd; |
| 510 | int err; |
| 511 | |
| 512 | /* Some cards seem to need this */ |
| 513 | mmc_go_idle(mmc); |
| 514 | |
Raffaele Recalcati | 1df837e | 2011-03-11 02:01:13 +0000 | [diff] [blame] | 515 | /* Asking to the card its capabilities */ |
| 516 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; |
| 517 | cmd.resp_type = MMC_RSP_R3; |
| 518 | cmd.cmdarg = 0; |
| 519 | cmd.flags = 0; |
Wolfgang Denk | 80f7021 | 2011-05-19 22:21:41 +0200 | [diff] [blame] | 520 | |
Raffaele Recalcati | 1df837e | 2011-03-11 02:01:13 +0000 | [diff] [blame] | 521 | err = mmc_send_cmd(mmc, &cmd, NULL); |
Wolfgang Denk | 80f7021 | 2011-05-19 22:21:41 +0200 | [diff] [blame] | 522 | |
Raffaele Recalcati | 1df837e | 2011-03-11 02:01:13 +0000 | [diff] [blame] | 523 | if (err) |
| 524 | return err; |
Wolfgang Denk | 80f7021 | 2011-05-19 22:21:41 +0200 | [diff] [blame] | 525 | |
Raffaele Recalcati | 1df837e | 2011-03-11 02:01:13 +0000 | [diff] [blame] | 526 | udelay(1000); |
Wolfgang Denk | 80f7021 | 2011-05-19 22:21:41 +0200 | [diff] [blame] | 527 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 528 | do { |
| 529 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; |
| 530 | cmd.resp_type = MMC_RSP_R3; |
Raffaele Recalcati | 1df837e | 2011-03-11 02:01:13 +0000 | [diff] [blame] | 531 | cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 : |
| 532 | (mmc->voltages & |
| 533 | (cmd.response[0] & OCR_VOLTAGE_MASK)) | |
| 534 | (cmd.response[0] & OCR_ACCESS_MODE)); |
Łukasz Majewski | 237823e | 2011-07-05 02:19:44 +0000 | [diff] [blame] | 535 | |
| 536 | if (mmc->host_caps & MMC_MODE_HC) |
| 537 | cmd.cmdarg |= OCR_HCS; |
| 538 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 539 | cmd.flags = 0; |
| 540 | |
| 541 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 542 | |
| 543 | if (err) |
| 544 | return err; |
| 545 | |
| 546 | udelay(1000); |
| 547 | } while (!(cmd.response[0] & OCR_BUSY) && timeout--); |
| 548 | |
| 549 | if (timeout <= 0) |
| 550 | return UNUSABLE_ERR; |
| 551 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 552 | if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ |
| 553 | cmd.cmdidx = MMC_CMD_SPI_READ_OCR; |
| 554 | cmd.resp_type = MMC_RSP_R3; |
| 555 | cmd.cmdarg = 0; |
| 556 | cmd.flags = 0; |
| 557 | |
| 558 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 559 | |
| 560 | if (err) |
| 561 | return err; |
| 562 | } |
| 563 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 564 | mmc->version = MMC_VERSION_UNKNOWN; |
Rabin Vincent | b6eed94 | 2009-04-05 13:30:56 +0530 | [diff] [blame] | 565 | mmc->ocr = cmd.response[0]; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 566 | |
| 567 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); |
| 568 | mmc->rca = 0; |
| 569 | |
| 570 | return 0; |
| 571 | } |
| 572 | |
| 573 | |
| 574 | int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd) |
| 575 | { |
| 576 | struct mmc_cmd cmd; |
| 577 | struct mmc_data data; |
| 578 | int err; |
| 579 | |
| 580 | /* Get the Card Status Register */ |
| 581 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; |
| 582 | cmd.resp_type = MMC_RSP_R1; |
| 583 | cmd.cmdarg = 0; |
| 584 | cmd.flags = 0; |
| 585 | |
| 586 | data.dest = ext_csd; |
| 587 | data.blocks = 1; |
| 588 | data.blocksize = 512; |
| 589 | data.flags = MMC_DATA_READ; |
| 590 | |
| 591 | err = mmc_send_cmd(mmc, &cmd, &data); |
| 592 | |
| 593 | return err; |
| 594 | } |
| 595 | |
| 596 | |
| 597 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) |
| 598 | { |
| 599 | struct mmc_cmd cmd; |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 600 | int timeout = 1000; |
| 601 | int ret; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 602 | |
| 603 | cmd.cmdidx = MMC_CMD_SWITCH; |
| 604 | cmd.resp_type = MMC_RSP_R1b; |
| 605 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 606 | (index << 16) | |
| 607 | (value << 8); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 608 | cmd.flags = 0; |
| 609 | |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 610 | ret = mmc_send_cmd(mmc, &cmd, NULL); |
| 611 | |
| 612 | /* Waiting for the ready status */ |
| 613 | mmc_send_status(mmc, timeout); |
| 614 | |
| 615 | return ret; |
| 616 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | int mmc_change_freq(struct mmc *mmc) |
| 620 | { |
Anton staaf | 82d04cb | 2011-10-04 11:24:50 +0000 | [diff] [blame] | 621 | ALLOC_CACHE_ALIGN_BUFFER(char, ext_csd, 512); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 622 | char cardtype; |
| 623 | int err; |
| 624 | |
| 625 | mmc->card_caps = 0; |
| 626 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 627 | if (mmc_host_is_spi(mmc)) |
| 628 | return 0; |
| 629 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 630 | /* Only version 4 supports high-speed */ |
| 631 | if (mmc->version < MMC_VERSION_4) |
| 632 | return 0; |
| 633 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 634 | err = mmc_send_ext_csd(mmc, ext_csd); |
| 635 | |
| 636 | if (err) |
| 637 | return err; |
| 638 | |
Lei Wen | 217467f | 2011-10-03 20:35:10 +0000 | [diff] [blame] | 639 | cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 640 | |
| 641 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); |
| 642 | |
| 643 | if (err) |
| 644 | return err; |
| 645 | |
| 646 | /* Now check to see that it worked */ |
| 647 | err = mmc_send_ext_csd(mmc, ext_csd); |
| 648 | |
| 649 | if (err) |
| 650 | return err; |
| 651 | |
| 652 | /* No high-speed support */ |
Lei Wen | 217467f | 2011-10-03 20:35:10 +0000 | [diff] [blame] | 653 | if (!ext_csd[EXT_CSD_HS_TIMING]) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 654 | return 0; |
| 655 | |
| 656 | /* High Speed is set, there are two types: 52MHz and 26MHz */ |
| 657 | if (cardtype & MMC_HS_52MHZ) |
| 658 | mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; |
| 659 | else |
| 660 | mmc->card_caps |= MMC_MODE_HS; |
| 661 | |
| 662 | return 0; |
| 663 | } |
| 664 | |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 665 | int mmc_switch_part(int dev_num, unsigned int part_num) |
| 666 | { |
| 667 | struct mmc *mmc = find_mmc_device(dev_num); |
| 668 | |
| 669 | if (!mmc) |
| 670 | return -1; |
| 671 | |
| 672 | return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, |
| 673 | (mmc->part_config & ~PART_ACCESS_MASK) |
| 674 | | (part_num & PART_ACCESS_MASK)); |
| 675 | } |
| 676 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 677 | int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) |
| 678 | { |
| 679 | struct mmc_cmd cmd; |
| 680 | struct mmc_data data; |
| 681 | |
| 682 | /* Switch the frequency */ |
| 683 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; |
| 684 | cmd.resp_type = MMC_RSP_R1; |
| 685 | cmd.cmdarg = (mode << 31) | 0xffffff; |
| 686 | cmd.cmdarg &= ~(0xf << (group * 4)); |
| 687 | cmd.cmdarg |= value << (group * 4); |
| 688 | cmd.flags = 0; |
| 689 | |
| 690 | data.dest = (char *)resp; |
| 691 | data.blocksize = 64; |
| 692 | data.blocks = 1; |
| 693 | data.flags = MMC_DATA_READ; |
| 694 | |
| 695 | return mmc_send_cmd(mmc, &cmd, &data); |
| 696 | } |
| 697 | |
| 698 | |
| 699 | int sd_change_freq(struct mmc *mmc) |
| 700 | { |
| 701 | int err; |
| 702 | struct mmc_cmd cmd; |
Anton staaf | 9b00f0d | 2011-10-03 13:54:59 +0000 | [diff] [blame] | 703 | ALLOC_CACHE_ALIGN_BUFFER(uint, scr, 2); |
| 704 | ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 705 | struct mmc_data data; |
| 706 | int timeout; |
| 707 | |
| 708 | mmc->card_caps = 0; |
| 709 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 710 | if (mmc_host_is_spi(mmc)) |
| 711 | return 0; |
| 712 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 713 | /* Read the SCR to find out if this card supports higher speeds */ |
| 714 | cmd.cmdidx = MMC_CMD_APP_CMD; |
| 715 | cmd.resp_type = MMC_RSP_R1; |
| 716 | cmd.cmdarg = mmc->rca << 16; |
| 717 | cmd.flags = 0; |
| 718 | |
| 719 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 720 | |
| 721 | if (err) |
| 722 | return err; |
| 723 | |
| 724 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; |
| 725 | cmd.resp_type = MMC_RSP_R1; |
| 726 | cmd.cmdarg = 0; |
| 727 | cmd.flags = 0; |
| 728 | |
| 729 | timeout = 3; |
| 730 | |
| 731 | retry_scr: |
Anton staaf | 9b00f0d | 2011-10-03 13:54:59 +0000 | [diff] [blame] | 732 | data.dest = (char *)scr; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 733 | data.blocksize = 8; |
| 734 | data.blocks = 1; |
| 735 | data.flags = MMC_DATA_READ; |
| 736 | |
| 737 | err = mmc_send_cmd(mmc, &cmd, &data); |
| 738 | |
| 739 | if (err) { |
| 740 | if (timeout--) |
| 741 | goto retry_scr; |
| 742 | |
| 743 | return err; |
| 744 | } |
| 745 | |
Yauhen Kharuzhy | 6e8edf4 | 2009-05-07 00:43:30 +0300 | [diff] [blame] | 746 | mmc->scr[0] = __be32_to_cpu(scr[0]); |
| 747 | mmc->scr[1] = __be32_to_cpu(scr[1]); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 748 | |
| 749 | switch ((mmc->scr[0] >> 24) & 0xf) { |
| 750 | case 0: |
| 751 | mmc->version = SD_VERSION_1_0; |
| 752 | break; |
| 753 | case 1: |
| 754 | mmc->version = SD_VERSION_1_10; |
| 755 | break; |
| 756 | case 2: |
| 757 | mmc->version = SD_VERSION_2; |
| 758 | break; |
| 759 | default: |
| 760 | mmc->version = SD_VERSION_1_0; |
| 761 | break; |
| 762 | } |
| 763 | |
Alagu Sankar | 24bb5ab | 2010-05-12 15:08:24 +0530 | [diff] [blame] | 764 | if (mmc->scr[0] & SD_DATA_4BIT) |
| 765 | mmc->card_caps |= MMC_MODE_4BIT; |
| 766 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 767 | /* Version 1.0 doesn't support switching */ |
| 768 | if (mmc->version == SD_VERSION_1_0) |
| 769 | return 0; |
| 770 | |
| 771 | timeout = 4; |
| 772 | while (timeout--) { |
| 773 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, |
Anton staaf | 9b00f0d | 2011-10-03 13:54:59 +0000 | [diff] [blame] | 774 | (u8 *)switch_status); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 775 | |
| 776 | if (err) |
| 777 | return err; |
| 778 | |
| 779 | /* The high-speed function is busy. Try again */ |
Yauhen Kharuzhy | 6e8edf4 | 2009-05-07 00:43:30 +0300 | [diff] [blame] | 780 | if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 781 | break; |
| 782 | } |
| 783 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 784 | /* If high-speed isn't supported, we return */ |
Yauhen Kharuzhy | 6e8edf4 | 2009-05-07 00:43:30 +0300 | [diff] [blame] | 785 | if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 786 | return 0; |
| 787 | |
Anton staaf | 9b00f0d | 2011-10-03 13:54:59 +0000 | [diff] [blame] | 788 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 789 | |
| 790 | if (err) |
| 791 | return err; |
| 792 | |
Yauhen Kharuzhy | 6e8edf4 | 2009-05-07 00:43:30 +0300 | [diff] [blame] | 793 | if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 794 | mmc->card_caps |= MMC_MODE_HS; |
| 795 | |
| 796 | return 0; |
| 797 | } |
| 798 | |
| 799 | /* frequency bases */ |
| 800 | /* divided by 10 to be nice to platforms without floating point */ |
Mike Frysinger | b588caf | 2010-10-20 01:15:53 +0000 | [diff] [blame] | 801 | static const int fbase[] = { |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 802 | 10000, |
| 803 | 100000, |
| 804 | 1000000, |
| 805 | 10000000, |
| 806 | }; |
| 807 | |
| 808 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice |
| 809 | * to platforms without floating point. |
| 810 | */ |
Mike Frysinger | b588caf | 2010-10-20 01:15:53 +0000 | [diff] [blame] | 811 | static const int multipliers[] = { |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 812 | 0, /* reserved */ |
| 813 | 10, |
| 814 | 12, |
| 815 | 13, |
| 816 | 15, |
| 817 | 20, |
| 818 | 25, |
| 819 | 30, |
| 820 | 35, |
| 821 | 40, |
| 822 | 45, |
| 823 | 50, |
| 824 | 55, |
| 825 | 60, |
| 826 | 70, |
| 827 | 80, |
| 828 | }; |
| 829 | |
| 830 | void mmc_set_ios(struct mmc *mmc) |
| 831 | { |
| 832 | mmc->set_ios(mmc); |
| 833 | } |
| 834 | |
| 835 | void mmc_set_clock(struct mmc *mmc, uint clock) |
| 836 | { |
| 837 | if (clock > mmc->f_max) |
| 838 | clock = mmc->f_max; |
| 839 | |
| 840 | if (clock < mmc->f_min) |
| 841 | clock = mmc->f_min; |
| 842 | |
| 843 | mmc->clock = clock; |
| 844 | |
| 845 | mmc_set_ios(mmc); |
| 846 | } |
| 847 | |
| 848 | void mmc_set_bus_width(struct mmc *mmc, uint width) |
| 849 | { |
| 850 | mmc->bus_width = width; |
| 851 | |
| 852 | mmc_set_ios(mmc); |
| 853 | } |
| 854 | |
| 855 | int mmc_startup(struct mmc *mmc) |
| 856 | { |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 857 | int err, width; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 858 | uint mult, freq; |
Yoshihiro Shimoda | 7d88de5 | 2011-07-04 22:13:26 +0000 | [diff] [blame] | 859 | u64 cmult, csize, capacity; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 860 | struct mmc_cmd cmd; |
Anton staaf | 82d04cb | 2011-10-04 11:24:50 +0000 | [diff] [blame] | 861 | ALLOC_CACHE_ALIGN_BUFFER(char, ext_csd, 512); |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 862 | ALLOC_CACHE_ALIGN_BUFFER(char, test_csd, 512); |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 863 | int timeout = 1000; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 864 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 865 | #ifdef CONFIG_MMC_SPI_CRC_ON |
| 866 | if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ |
| 867 | cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; |
| 868 | cmd.resp_type = MMC_RSP_R1; |
| 869 | cmd.cmdarg = 1; |
| 870 | cmd.flags = 0; |
| 871 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 872 | |
| 873 | if (err) |
| 874 | return err; |
| 875 | } |
| 876 | #endif |
| 877 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 878 | /* Put the Card in Identify Mode */ |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 879 | cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : |
| 880 | MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 881 | cmd.resp_type = MMC_RSP_R2; |
| 882 | cmd.cmdarg = 0; |
| 883 | cmd.flags = 0; |
| 884 | |
| 885 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 886 | |
| 887 | if (err) |
| 888 | return err; |
| 889 | |
| 890 | memcpy(mmc->cid, cmd.response, 16); |
| 891 | |
| 892 | /* |
| 893 | * For MMC cards, set the Relative Address. |
| 894 | * For SD cards, get the Relatvie Address. |
| 895 | * This also puts the cards into Standby State |
| 896 | */ |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 897 | if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ |
| 898 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; |
| 899 | cmd.cmdarg = mmc->rca << 16; |
| 900 | cmd.resp_type = MMC_RSP_R6; |
| 901 | cmd.flags = 0; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 902 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 903 | err = mmc_send_cmd(mmc, &cmd, NULL); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 904 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 905 | if (err) |
| 906 | return err; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 907 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 908 | if (IS_SD(mmc)) |
| 909 | mmc->rca = (cmd.response[0] >> 16) & 0xffff; |
| 910 | } |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 911 | |
| 912 | /* Get the Card-Specific Data */ |
| 913 | cmd.cmdidx = MMC_CMD_SEND_CSD; |
| 914 | cmd.resp_type = MMC_RSP_R2; |
| 915 | cmd.cmdarg = mmc->rca << 16; |
| 916 | cmd.flags = 0; |
| 917 | |
| 918 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 919 | |
Raffaele Recalcati | 01a0dc6 | 2011-03-11 02:01:12 +0000 | [diff] [blame] | 920 | /* Waiting for the ready status */ |
| 921 | mmc_send_status(mmc, timeout); |
| 922 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 923 | if (err) |
| 924 | return err; |
| 925 | |
Rabin Vincent | b6eed94 | 2009-04-05 13:30:56 +0530 | [diff] [blame] | 926 | mmc->csd[0] = cmd.response[0]; |
| 927 | mmc->csd[1] = cmd.response[1]; |
| 928 | mmc->csd[2] = cmd.response[2]; |
| 929 | mmc->csd[3] = cmd.response[3]; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 930 | |
| 931 | if (mmc->version == MMC_VERSION_UNKNOWN) { |
Rabin Vincent | bdf7a68 | 2009-04-05 13:30:55 +0530 | [diff] [blame] | 932 | int version = (cmd.response[0] >> 26) & 0xf; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 933 | |
| 934 | switch (version) { |
| 935 | case 0: |
| 936 | mmc->version = MMC_VERSION_1_2; |
| 937 | break; |
| 938 | case 1: |
| 939 | mmc->version = MMC_VERSION_1_4; |
| 940 | break; |
| 941 | case 2: |
| 942 | mmc->version = MMC_VERSION_2_2; |
| 943 | break; |
| 944 | case 3: |
| 945 | mmc->version = MMC_VERSION_3; |
| 946 | break; |
| 947 | case 4: |
| 948 | mmc->version = MMC_VERSION_4; |
| 949 | break; |
| 950 | default: |
| 951 | mmc->version = MMC_VERSION_1_2; |
| 952 | break; |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | /* divide frequency by 10, since the mults are 10x bigger */ |
Rabin Vincent | bdf7a68 | 2009-04-05 13:30:55 +0530 | [diff] [blame] | 957 | freq = fbase[(cmd.response[0] & 0x7)]; |
| 958 | mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 959 | |
| 960 | mmc->tran_speed = freq * mult; |
| 961 | |
Rabin Vincent | b6eed94 | 2009-04-05 13:30:56 +0530 | [diff] [blame] | 962 | mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 963 | |
| 964 | if (IS_SD(mmc)) |
| 965 | mmc->write_bl_len = mmc->read_bl_len; |
| 966 | else |
Rabin Vincent | b6eed94 | 2009-04-05 13:30:56 +0530 | [diff] [blame] | 967 | mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 968 | |
| 969 | if (mmc->high_capacity) { |
| 970 | csize = (mmc->csd[1] & 0x3f) << 16 |
| 971 | | (mmc->csd[2] & 0xffff0000) >> 16; |
| 972 | cmult = 8; |
| 973 | } else { |
| 974 | csize = (mmc->csd[1] & 0x3ff) << 2 |
| 975 | | (mmc->csd[2] & 0xc0000000) >> 30; |
| 976 | cmult = (mmc->csd[2] & 0x00038000) >> 15; |
| 977 | } |
| 978 | |
| 979 | mmc->capacity = (csize + 1) << (cmult + 2); |
| 980 | mmc->capacity *= mmc->read_bl_len; |
| 981 | |
| 982 | if (mmc->read_bl_len > 512) |
| 983 | mmc->read_bl_len = 512; |
| 984 | |
| 985 | if (mmc->write_bl_len > 512) |
| 986 | mmc->write_bl_len = 512; |
| 987 | |
| 988 | /* Select the card, and put it into Transfer Mode */ |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 989 | if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ |
| 990 | cmd.cmdidx = MMC_CMD_SELECT_CARD; |
Ajay Bhargav | 4a32fba | 2011-10-05 03:13:23 +0000 | [diff] [blame] | 991 | cmd.resp_type = MMC_RSP_R1; |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 992 | cmd.cmdarg = mmc->rca << 16; |
| 993 | cmd.flags = 0; |
| 994 | err = mmc_send_cmd(mmc, &cmd, NULL); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 995 | |
Thomas Chou | 1254c3d | 2010-12-24 13:12:21 +0000 | [diff] [blame] | 996 | if (err) |
| 997 | return err; |
| 998 | } |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 999 | |
Lei Wen | ea52676 | 2011-06-22 17:03:31 +0000 | [diff] [blame] | 1000 | /* |
| 1001 | * For SD, its erase group is always one sector |
| 1002 | */ |
| 1003 | mmc->erase_grp_size = 1; |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 1004 | mmc->part_config = MMCPART_NOAVAILABLE; |
Sukumar Ghorai | 232293c | 2010-09-20 18:29:29 +0530 | [diff] [blame] | 1005 | if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { |
| 1006 | /* check ext_csd version and capacity */ |
| 1007 | err = mmc_send_ext_csd(mmc, ext_csd); |
Lei Wen | 217467f | 2011-10-03 20:35:10 +0000 | [diff] [blame] | 1008 | if (!err & (ext_csd[EXT_CSD_REV] >= 2)) { |
Yoshihiro Shimoda | 7d88de5 | 2011-07-04 22:13:26 +0000 | [diff] [blame] | 1009 | /* |
| 1010 | * According to the JEDEC Standard, the value of |
| 1011 | * ext_csd's capacity is valid if the value is more |
| 1012 | * than 2GB |
| 1013 | */ |
Lei Wen | 217467f | 2011-10-03 20:35:10 +0000 | [diff] [blame] | 1014 | capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 |
| 1015 | | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
| 1016 | | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
| 1017 | | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; |
Yoshihiro Shimoda | 7d88de5 | 2011-07-04 22:13:26 +0000 | [diff] [blame] | 1018 | capacity *= 512; |
Łukasz Majewski | 237823e | 2011-07-05 02:19:44 +0000 | [diff] [blame] | 1019 | if ((capacity >> 20) > 2 * 1024) |
Yoshihiro Shimoda | 7d88de5 | 2011-07-04 22:13:26 +0000 | [diff] [blame] | 1020 | mmc->capacity = capacity; |
Sukumar Ghorai | 232293c | 2010-09-20 18:29:29 +0530 | [diff] [blame] | 1021 | } |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 1022 | |
Lei Wen | ea52676 | 2011-06-22 17:03:31 +0000 | [diff] [blame] | 1023 | /* |
| 1024 | * Check whether GROUP_DEF is set, if yes, read out |
| 1025 | * group size from ext_csd directly, or calculate |
| 1026 | * the group size from the csd value. |
| 1027 | */ |
Lei Wen | 217467f | 2011-10-03 20:35:10 +0000 | [diff] [blame] | 1028 | if (ext_csd[EXT_CSD_ERASE_GROUP_DEF]) |
| 1029 | mmc->erase_grp_size = |
| 1030 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 512 * 1024; |
Lei Wen | ea52676 | 2011-06-22 17:03:31 +0000 | [diff] [blame] | 1031 | else { |
| 1032 | int erase_gsz, erase_gmul; |
| 1033 | erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; |
| 1034 | erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; |
| 1035 | mmc->erase_grp_size = (erase_gsz + 1) |
| 1036 | * (erase_gmul + 1); |
| 1037 | } |
| 1038 | |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 1039 | /* store the partition info of emmc */ |
Lei Wen | 217467f | 2011-10-03 20:35:10 +0000 | [diff] [blame] | 1040 | if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) |
| 1041 | mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; |
Sukumar Ghorai | 232293c | 2010-09-20 18:29:29 +0530 | [diff] [blame] | 1042 | } |
| 1043 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1044 | if (IS_SD(mmc)) |
| 1045 | err = sd_change_freq(mmc); |
| 1046 | else |
| 1047 | err = mmc_change_freq(mmc); |
| 1048 | |
| 1049 | if (err) |
| 1050 | return err; |
| 1051 | |
| 1052 | /* Restrict card's capabilities by what the host can do */ |
| 1053 | mmc->card_caps &= mmc->host_caps; |
| 1054 | |
| 1055 | if (IS_SD(mmc)) { |
| 1056 | if (mmc->card_caps & MMC_MODE_4BIT) { |
| 1057 | cmd.cmdidx = MMC_CMD_APP_CMD; |
| 1058 | cmd.resp_type = MMC_RSP_R1; |
| 1059 | cmd.cmdarg = mmc->rca << 16; |
| 1060 | cmd.flags = 0; |
| 1061 | |
| 1062 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 1063 | if (err) |
| 1064 | return err; |
| 1065 | |
| 1066 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; |
| 1067 | cmd.resp_type = MMC_RSP_R1; |
| 1068 | cmd.cmdarg = 2; |
| 1069 | cmd.flags = 0; |
| 1070 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 1071 | if (err) |
| 1072 | return err; |
| 1073 | |
| 1074 | mmc_set_bus_width(mmc, 4); |
| 1075 | } |
| 1076 | |
| 1077 | if (mmc->card_caps & MMC_MODE_HS) |
| 1078 | mmc_set_clock(mmc, 50000000); |
| 1079 | else |
| 1080 | mmc_set_clock(mmc, 25000000); |
| 1081 | } else { |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 1082 | for (width = EXT_CSD_BUS_WIDTH_8; width >= 0; width--) { |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1083 | /* Set the card to use 4 bit*/ |
| 1084 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 1085 | EXT_CSD_BUS_WIDTH, width); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1086 | |
| 1087 | if (err) |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 1088 | continue; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1089 | |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 1090 | if (!width) { |
| 1091 | mmc_set_bus_width(mmc, 1); |
| 1092 | break; |
| 1093 | } else |
| 1094 | mmc_set_bus_width(mmc, 4 * width); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1095 | |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 1096 | err = mmc_send_ext_csd(mmc, test_csd); |
| 1097 | if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ |
| 1098 | == test_csd[EXT_CSD_PARTITIONING_SUPPORT] |
| 1099 | && ext_csd[EXT_CSD_ERASE_GROUP_DEF] \ |
| 1100 | == test_csd[EXT_CSD_ERASE_GROUP_DEF] \ |
| 1101 | && ext_csd[EXT_CSD_REV] \ |
| 1102 | == test_csd[EXT_CSD_REV] |
| 1103 | && ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] \ |
| 1104 | == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] |
| 1105 | && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ |
| 1106 | &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1107 | |
Lei Wen | 4f5a6a5 | 2011-10-03 20:35:11 +0000 | [diff] [blame] | 1108 | mmc->card_caps |= width; |
| 1109 | break; |
| 1110 | } |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1111 | } |
| 1112 | |
| 1113 | if (mmc->card_caps & MMC_MODE_HS) { |
| 1114 | if (mmc->card_caps & MMC_MODE_HS_52MHz) |
| 1115 | mmc_set_clock(mmc, 52000000); |
| 1116 | else |
| 1117 | mmc_set_clock(mmc, 26000000); |
| 1118 | } else |
| 1119 | mmc_set_clock(mmc, 20000000); |
| 1120 | } |
| 1121 | |
| 1122 | /* fill in device description */ |
| 1123 | mmc->block_dev.lun = 0; |
| 1124 | mmc->block_dev.type = 0; |
| 1125 | mmc->block_dev.blksz = mmc->read_bl_len; |
Rabin Vincent | 69d4e2c | 2009-04-05 13:30:54 +0530 | [diff] [blame] | 1126 | mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
Rabin Vincent | bdf7a68 | 2009-04-05 13:30:55 +0530 | [diff] [blame] | 1127 | sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8, |
| 1128 | (mmc->cid[2] << 8) | (mmc->cid[3] >> 24)); |
| 1129 | sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff, |
| 1130 | (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, |
| 1131 | (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); |
| 1132 | sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28, |
| 1133 | (mmc->cid[2] >> 24) & 0xf); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1134 | init_part(&mmc->block_dev); |
| 1135 | |
| 1136 | return 0; |
| 1137 | } |
| 1138 | |
| 1139 | int mmc_send_if_cond(struct mmc *mmc) |
| 1140 | { |
| 1141 | struct mmc_cmd cmd; |
| 1142 | int err; |
| 1143 | |
| 1144 | cmd.cmdidx = SD_CMD_SEND_IF_COND; |
| 1145 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ |
| 1146 | cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; |
| 1147 | cmd.resp_type = MMC_RSP_R7; |
| 1148 | cmd.flags = 0; |
| 1149 | |
| 1150 | err = mmc_send_cmd(mmc, &cmd, NULL); |
| 1151 | |
| 1152 | if (err) |
| 1153 | return err; |
| 1154 | |
Rabin Vincent | b6eed94 | 2009-04-05 13:30:56 +0530 | [diff] [blame] | 1155 | if ((cmd.response[0] & 0xff) != 0xaa) |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1156 | return UNUSABLE_ERR; |
| 1157 | else |
| 1158 | mmc->version = SD_VERSION_2; |
| 1159 | |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | int mmc_register(struct mmc *mmc) |
| 1164 | { |
| 1165 | /* Setup the universal parts of the block interface just once */ |
| 1166 | mmc->block_dev.if_type = IF_TYPE_MMC; |
| 1167 | mmc->block_dev.dev = cur_dev_num++; |
| 1168 | mmc->block_dev.removable = 1; |
| 1169 | mmc->block_dev.block_read = mmc_bread; |
| 1170 | mmc->block_dev.block_write = mmc_bwrite; |
Lei Wen | ea52676 | 2011-06-22 17:03:31 +0000 | [diff] [blame] | 1171 | mmc->block_dev.block_erase = mmc_berase; |
John Rigby | f2f4366 | 2011-04-18 05:50:08 +0000 | [diff] [blame] | 1172 | if (!mmc->b_max) |
| 1173 | mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1174 | |
| 1175 | INIT_LIST_HEAD (&mmc->link); |
| 1176 | |
| 1177 | list_add_tail (&mmc->link, &mmc_devices); |
| 1178 | |
| 1179 | return 0; |
| 1180 | } |
| 1181 | |
Matthew McClintock | 6252b4f | 2011-05-24 05:31:19 +0000 | [diff] [blame] | 1182 | #ifdef CONFIG_PARTITIONS |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1183 | block_dev_desc_t *mmc_get_dev(int dev) |
| 1184 | { |
| 1185 | struct mmc *mmc = find_mmc_device(dev); |
| 1186 | |
Rabin Vincent | 3e448aa | 2009-04-05 13:30:53 +0530 | [diff] [blame] | 1187 | return mmc ? &mmc->block_dev : NULL; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1188 | } |
Matthew McClintock | 6252b4f | 2011-05-24 05:31:19 +0000 | [diff] [blame] | 1189 | #endif |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1190 | |
| 1191 | int mmc_init(struct mmc *mmc) |
| 1192 | { |
Macpaul Lin | 028bde1 | 2011-11-14 23:35:39 +0000 | [diff] [blame] | 1193 | int err; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1194 | |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 1195 | if (mmc->has_init) |
| 1196 | return 0; |
| 1197 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1198 | err = mmc->init(mmc); |
| 1199 | |
| 1200 | if (err) |
| 1201 | return err; |
| 1202 | |
Ilya Yanok | 8459aab | 2009-06-29 17:53:16 +0400 | [diff] [blame] | 1203 | mmc_set_bus_width(mmc, 1); |
| 1204 | mmc_set_clock(mmc, 1); |
| 1205 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1206 | /* Reset the Card */ |
| 1207 | err = mmc_go_idle(mmc); |
| 1208 | |
| 1209 | if (err) |
| 1210 | return err; |
| 1211 | |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 1212 | /* The internal partition reset to user partition(0) at every CMD0*/ |
| 1213 | mmc->part_num = 0; |
| 1214 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1215 | /* Test for SD version 2 */ |
Macpaul Lin | 028bde1 | 2011-11-14 23:35:39 +0000 | [diff] [blame] | 1216 | err = mmc_send_if_cond(mmc); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1217 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1218 | /* Now try to get the SD card's operating condition */ |
| 1219 | err = sd_send_op_cond(mmc); |
| 1220 | |
| 1221 | /* If the command timed out, we check for an MMC card */ |
| 1222 | if (err == TIMEOUT) { |
| 1223 | err = mmc_send_op_cond(mmc); |
| 1224 | |
| 1225 | if (err) { |
| 1226 | printf("Card did not respond to voltage select!\n"); |
| 1227 | return UNUSABLE_ERR; |
| 1228 | } |
| 1229 | } |
| 1230 | |
Lei Wen | 31b9980 | 2011-05-02 16:26:26 +0000 | [diff] [blame] | 1231 | err = mmc_startup(mmc); |
| 1232 | if (err) |
| 1233 | mmc->has_init = 0; |
| 1234 | else |
| 1235 | mmc->has_init = 1; |
| 1236 | return err; |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1237 | } |
| 1238 | |
| 1239 | /* |
| 1240 | * CPU and board-specific MMC initializations. Aliased function |
| 1241 | * signals caller to move on |
| 1242 | */ |
| 1243 | static int __def_mmc_init(bd_t *bis) |
| 1244 | { |
| 1245 | return -1; |
| 1246 | } |
| 1247 | |
Peter Tyser | 21d2cd2 | 2009-04-20 11:08:46 -0500 | [diff] [blame] | 1248 | int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
| 1249 | int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1250 | |
| 1251 | void print_mmc_devices(char separator) |
| 1252 | { |
| 1253 | struct mmc *m; |
| 1254 | struct list_head *entry; |
| 1255 | |
| 1256 | list_for_each(entry, &mmc_devices) { |
| 1257 | m = list_entry(entry, struct mmc, link); |
| 1258 | |
| 1259 | printf("%s: %d", m->name, m->block_dev.dev); |
| 1260 | |
| 1261 | if (entry->next != &mmc_devices) |
| 1262 | printf("%c ", separator); |
| 1263 | } |
| 1264 | |
| 1265 | printf("\n"); |
| 1266 | } |
| 1267 | |
Lei Wen | d430d7c | 2011-05-02 16:26:25 +0000 | [diff] [blame] | 1268 | int get_mmc_num(void) |
| 1269 | { |
| 1270 | return cur_dev_num; |
| 1271 | } |
| 1272 | |
Andy Fleming | ad347bb | 2008-10-30 16:41:01 -0500 | [diff] [blame] | 1273 | int mmc_initialize(bd_t *bis) |
| 1274 | { |
| 1275 | INIT_LIST_HEAD (&mmc_devices); |
| 1276 | cur_dev_num = 0; |
| 1277 | |
| 1278 | if (board_mmc_init(bis) < 0) |
| 1279 | cpu_mmc_init(bis); |
| 1280 | |
| 1281 | print_mmc_devices(','); |
| 1282 | |
| 1283 | return 0; |
| 1284 | } |