Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <stdlib.h> |
| 30 | #include <stdint.h> |
| 31 | #include <mmc_sdhci.h> |
| 32 | #include <mmc_wrapper.h> |
| 33 | #include <sdhci.h> |
| 34 | #include <target.h> |
Oliver Wang | 0e0dfa7 | 2013-10-22 18:40:13 +0800 | [diff] [blame] | 35 | #include <string.h> |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 36 | |
| 37 | /* |
| 38 | * Function: get mmc card |
| 39 | * Arg : None |
| 40 | * Return : Pointer to mmc card structure |
| 41 | * Flow : Get the card pointer from the device structure |
| 42 | */ |
| 43 | static struct mmc_card *get_mmc_card() |
| 44 | { |
| 45 | struct mmc_device *dev; |
| 46 | struct mmc_card *card; |
| 47 | |
| 48 | dev = target_mmc_device(); |
| 49 | card = &dev->card; |
| 50 | |
| 51 | return card; |
| 52 | } |
| 53 | |
| 54 | /* |
| 55 | * Function: mmc_write |
| 56 | * Arg : Data address on card, data length, i/p buffer |
| 57 | * Return : 0 on Success, non zero on failure |
| 58 | * Flow : Write the data from in to the card |
| 59 | */ |
| 60 | uint32_t mmc_write(uint64_t data_addr, uint32_t data_len, void *in) |
| 61 | { |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 62 | uint32_t val = 0; |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 63 | uint32_t write_size = SDHCI_ADMA_MAX_TRANS_SZ; |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 64 | uint8_t *sptr = (uint8_t *)in; |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 65 | struct mmc_device *dev; |
| 66 | |
| 67 | dev = target_mmc_device(); |
| 68 | |
| 69 | ASSERT(!(data_addr % MMC_BLK_SZ)); |
| 70 | |
| 71 | if (data_len % MMC_BLK_SZ) |
| 72 | data_len = ROUNDUP(data_len, MMC_BLK_SZ); |
| 73 | |
| 74 | /* TODO: This function is aware of max data that can be |
| 75 | * tranferred using sdhci adma mode, need to have a cleaner |
| 76 | * implementation to keep this function independent of sdhci |
| 77 | * limitations |
| 78 | */ |
| 79 | while (data_len > write_size) { |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 80 | val = mmc_sdhci_write(dev, (void *)sptr, (data_addr / MMC_BLK_SZ), (write_size / MMC_BLK_SZ)); |
| 81 | if (val) |
| 82 | { |
| 83 | dprintf(CRITICAL, "Failed Writing block @ %x\n", (data_addr / MMC_BLK_SZ)); |
| 84 | return val; |
| 85 | } |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 86 | sptr += write_size; |
| 87 | data_addr += write_size; |
| 88 | data_len -= write_size; |
| 89 | } |
| 90 | |
| 91 | if (data_len) |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 92 | val = mmc_sdhci_write(dev, (void *)sptr, (data_addr / MMC_BLK_SZ), (data_len / MMC_BLK_SZ)); |
| 93 | |
| 94 | if (val) |
| 95 | dprintf(CRITICAL, "Failed Writing block @ %x\n", (data_addr / MMC_BLK_SZ)); |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 96 | |
| 97 | return val; |
| 98 | } |
| 99 | |
| 100 | /* |
| 101 | * Function: mmc_read |
| 102 | * Arg : Data address on card, o/p buffer & data length |
| 103 | * Return : 0 on Success, non zero on failure |
| 104 | * Flow : Read data from the card to out |
| 105 | */ |
| 106 | uint32_t mmc_read(uint64_t data_addr, uint32_t *out, uint32_t data_len) |
| 107 | { |
| 108 | uint32_t ret = 0; |
| 109 | uint32_t read_size = SDHCI_ADMA_MAX_TRANS_SZ; |
| 110 | struct mmc_device *dev; |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 111 | uint8_t *sptr = (uint8_t *)out; |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 112 | |
| 113 | ASSERT(!(data_addr % MMC_BLK_SZ)); |
| 114 | ASSERT(!(data_len % MMC_BLK_SZ)); |
| 115 | |
| 116 | dev = target_mmc_device(); |
| 117 | |
| 118 | /* TODO: This function is aware of max data that can be |
| 119 | * tranferred using sdhci adma mode, need to have a cleaner |
| 120 | * implementation to keep this function independent of sdhci |
| 121 | * limitations |
| 122 | */ |
| 123 | while (data_len > read_size) { |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 124 | ret = mmc_sdhci_read(dev, (void *)sptr, (data_addr / MMC_BLK_SZ), (read_size / MMC_BLK_SZ)); |
| 125 | if (ret) |
| 126 | { |
| 127 | dprintf(CRITICAL, "Failed Reading block @ %x\n", (data_addr / MMC_BLK_SZ)); |
| 128 | return ret; |
| 129 | } |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 130 | sptr += read_size; |
| 131 | data_addr += read_size; |
| 132 | data_len -= read_size; |
| 133 | } |
| 134 | |
| 135 | if (data_len) |
Channagoud Kadabi | 53f1be7 | 2013-06-05 17:56:11 -0700 | [diff] [blame] | 136 | ret = mmc_sdhci_read(dev, (void *)sptr, (data_addr / MMC_BLK_SZ), (data_len / MMC_BLK_SZ)); |
| 137 | |
| 138 | if (ret) |
| 139 | dprintf(CRITICAL, "Failed Reading block @ %x\n", (data_addr / MMC_BLK_SZ)); |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 140 | |
| 141 | return ret; |
| 142 | } |
| 143 | |
| 144 | /* |
Oliver Wang | 0e0dfa7 | 2013-10-22 18:40:13 +0800 | [diff] [blame] | 145 | * Function: mmc get erase unit size |
| 146 | * Arg : None |
| 147 | * Return : Returns the erase unit size of the storage |
| 148 | * Flow : Get the erase unit size from the card |
| 149 | */ |
| 150 | |
| 151 | uint32_t mmc_get_eraseunit_size() |
| 152 | { |
| 153 | uint32_t erase_unit_sz = 0; |
| 154 | struct mmc_device *dev; |
| 155 | struct mmc_card *card; |
| 156 | |
| 157 | dev = target_mmc_device(); |
| 158 | card = &dev->card; |
| 159 | /* |
| 160 | * Calculate the erase unit size, |
| 161 | * 1. Based on emmc 4.5 spec for emmc card |
| 162 | * 2. Use SD Card Status info for SD cards |
| 163 | */ |
| 164 | if (MMC_CARD_MMC(card)) |
| 165 | { |
| 166 | /* |
| 167 | * Calculate the erase unit size as per the emmc specification v4.5 |
| 168 | */ |
| 169 | if (dev->card.ext_csd[MMC_ERASE_GRP_DEF]) |
| 170 | erase_unit_sz = (MMC_HC_ERASE_MULT * dev->card.ext_csd[MMC_HC_ERASE_GRP_SIZE]) / MMC_BLK_SZ; |
| 171 | else |
| 172 | erase_unit_sz = (dev->card.csd.erase_grp_size + 1) * (dev->card.csd.erase_grp_mult + 1); |
| 173 | } |
| 174 | else |
| 175 | erase_unit_sz = dev->card.ssr.au_size * dev->card.ssr.num_aus; |
| 176 | |
| 177 | return erase_unit_sz; |
| 178 | } |
| 179 | |
| 180 | /* |
| 181 | * Function: Zero out blk_len blocks at the blk_addr by writing zeros. The |
| 182 | * function can be used when we want to erase the blocks not |
| 183 | * aligned with the mmc erase group. |
| 184 | * Arg : Block address & length |
| 185 | * Return : Returns 0 |
| 186 | * Flow : Erase the card from specified addr |
| 187 | */ |
| 188 | |
| 189 | static uint32_t mmc_zero_out(struct mmc_device* dev, uint32_t blk_addr, uint32_t num_blks) |
| 190 | { |
| 191 | uint32_t *out; |
| 192 | uint32_t block_size; |
| 193 | int i; |
| 194 | |
| 195 | dprintf(INFO, "erasing 0x%x:0x%x\n", blk_addr, num_blks); |
| 196 | block_size = mmc_get_device_blocksize(); |
| 197 | |
| 198 | /* Assume there are at least block_size bytes available in the heap */ |
| 199 | out = memalign(CACHE_LINE, ROUNDUP(block_size, CACHE_LINE)); |
| 200 | |
| 201 | if (!out) |
| 202 | { |
| 203 | dprintf(CRITICAL, "Error allocating memory\n"); |
| 204 | return 1; |
| 205 | } |
| 206 | memset((void *)out, 0, ROUNDUP(block_size, CACHE_LINE)); |
| 207 | |
| 208 | for (i = 0; i < num_blks; i++) |
| 209 | { |
| 210 | if (mmc_sdhci_write(dev, out, blk_addr + i, 1)) |
| 211 | { |
| 212 | dprintf(CRITICAL, "failed to erase the partition: %x\n", blk_addr); |
| 213 | free(out); |
| 214 | return 1; |
| 215 | } |
| 216 | } |
| 217 | free(out); |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | /* |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 222 | * Function: mmc erase card |
| 223 | * Arg : Block address & length |
| 224 | * Return : Returns 0 |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame] | 225 | * Flow : Erase the card from specified addr |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 226 | */ |
| 227 | uint32_t mmc_erase_card(uint64_t addr, uint64_t len) |
| 228 | { |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame] | 229 | struct mmc_device *dev; |
Oliver Wang | 0e0dfa7 | 2013-10-22 18:40:13 +0800 | [diff] [blame] | 230 | uint32_t block_size; |
| 231 | uint32_t unaligned_blks; |
| 232 | uint32_t head_unit; |
| 233 | uint32_t tail_unit; |
| 234 | uint32_t erase_unit_sz; |
| 235 | uint32_t blk_addr; |
| 236 | uint32_t blk_count; |
| 237 | uint64_t blks_to_erase; |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame] | 238 | |
Oliver Wang | 0e0dfa7 | 2013-10-22 18:40:13 +0800 | [diff] [blame] | 239 | block_size = mmc_get_device_blocksize(); |
| 240 | erase_unit_sz = mmc_get_eraseunit_size(); |
| 241 | dprintf(SPEW, "erase_unit_sz:0x%x\n", erase_unit_sz); |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame] | 242 | |
| 243 | ASSERT(!(addr % MMC_BLK_SZ)); |
| 244 | ASSERT(!(len % MMC_BLK_SZ)); |
| 245 | |
Oliver Wang | 0e0dfa7 | 2013-10-22 18:40:13 +0800 | [diff] [blame] | 246 | blk_addr = addr / block_size; |
| 247 | blk_count = len / block_size; |
| 248 | |
| 249 | dev = target_mmc_device(); |
| 250 | |
| 251 | dprintf(INFO, "Erasing card: 0x%x:0x%x\n", blk_addr, blk_count); |
| 252 | |
| 253 | head_unit = blk_addr / erase_unit_sz; |
| 254 | tail_unit = (blk_addr + blk_count - 1) / erase_unit_sz; |
| 255 | |
| 256 | if (tail_unit - head_unit <= 1) |
| 257 | { |
| 258 | dprintf(INFO, "SDHCI unit erase not required\n"); |
| 259 | return mmc_zero_out(dev, blk_addr, blk_count); |
| 260 | } |
| 261 | |
| 262 | unaligned_blks = erase_unit_sz - (blk_addr % erase_unit_sz); |
| 263 | |
| 264 | if (unaligned_blks < erase_unit_sz) |
| 265 | { |
| 266 | dprintf(SPEW, "Handling unaligned head blocks\n"); |
| 267 | if (mmc_zero_out(dev, blk_addr, unaligned_blks)) |
| 268 | return 1; |
| 269 | |
| 270 | blk_addr += unaligned_blks; |
| 271 | blk_count -= unaligned_blks; |
| 272 | } |
| 273 | |
| 274 | unaligned_blks = blk_count % erase_unit_sz; |
| 275 | blks_to_erase = blk_count - unaligned_blks; |
| 276 | |
| 277 | dprintf(SPEW, "Performing SDHCI erase: 0x%x:0x%x\n", blk_addr, blks_to_erase); |
| 278 | if (mmc_sdhci_erase((struct mmc_device *)dev, blk_addr, blks_to_erase * block_size)) |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame] | 279 | { |
| 280 | dprintf(CRITICAL, "MMC erase failed\n"); |
| 281 | return 1; |
| 282 | } |
Oliver Wang | 0e0dfa7 | 2013-10-22 18:40:13 +0800 | [diff] [blame] | 283 | |
| 284 | blk_addr += blks_to_erase; |
| 285 | |
| 286 | if (unaligned_blks) |
| 287 | { |
| 288 | dprintf(SPEW, "Handling unaligned tail blocks\n"); |
| 289 | if (mmc_zero_out(dev, blk_addr, unaligned_blks)) |
| 290 | return 1; |
| 291 | } |
| 292 | |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | /* |
| 297 | * Function: mmc get psn |
| 298 | * Arg : None |
| 299 | * Return : Returns the product serial number |
| 300 | * Flow : Get the PSN from card |
| 301 | */ |
| 302 | uint32_t mmc_get_psn(void) |
| 303 | { |
| 304 | struct mmc_card *card; |
| 305 | |
| 306 | card = get_mmc_card(); |
| 307 | |
| 308 | return card->cid.psn; |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * Function: mmc get capacity |
| 313 | * Arg : None |
| 314 | * Return : Returns the density of the emmc card |
| 315 | * Flow : Get the density from card |
| 316 | */ |
| 317 | uint64_t mmc_get_device_capacity() |
| 318 | { |
| 319 | struct mmc_card *card; |
| 320 | |
| 321 | card = get_mmc_card(); |
| 322 | |
| 323 | return card->capacity; |
| 324 | } |
| 325 | |
Channagoud Kadabi | 57eb630 | 2013-09-10 14:21:30 -0700 | [diff] [blame] | 326 | /* |
| 327 | * Function: mmc get pagesize |
| 328 | * Arg : None |
| 329 | * Return : Returns the density of the emmc card |
| 330 | * Flow : Get the density from card |
| 331 | */ |
| 332 | uint32_t mmc_get_device_blocksize() |
| 333 | { |
| 334 | struct mmc_card *card; |
| 335 | |
| 336 | card = get_mmc_card(); |
| 337 | |
| 338 | return card->block_size; |
| 339 | } |
Aparna Mallavarapu | 53731bb | 2014-04-14 18:24:38 +0530 | [diff] [blame] | 340 | |
| 341 | /* |
| 342 | * Function: storage page size |
| 343 | * Arg : None |
| 344 | * Return : Returns the page size for the card |
| 345 | * Flow : Get the page size for storage |
| 346 | */ |
| 347 | uint32_t mmc_page_size() |
| 348 | { |
| 349 | return BOARD_KERNEL_PAGESIZE; |
| 350 | } |