mmc_write.c 5.0 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright 2008, Freescale Semiconductor, Inc
  4. * Andy Fleming
  5. *
  6. * Based vaguely on the Linux code
  7. */
  8. #include <config.h>
  9. #include <common.h>
  10. #include <blk.h>
  11. #include <dm.h>
  12. #include <part.h>
  13. #include <div64.h>
  14. #include <linux/math64.h>
  15. #include "mmc_private.h"
  16. static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
  17. {
  18. struct mmc_cmd cmd;
  19. ulong end;
  20. int err, start_cmd, end_cmd;
  21. if (mmc->high_capacity) {
  22. end = start + blkcnt - 1;
  23. } else {
  24. end = (start + blkcnt - 1) * mmc->write_bl_len;
  25. start *= mmc->write_bl_len;
  26. }
  27. if (IS_SD(mmc)) {
  28. start_cmd = SD_CMD_ERASE_WR_BLK_START;
  29. end_cmd = SD_CMD_ERASE_WR_BLK_END;
  30. } else {
  31. start_cmd = MMC_CMD_ERASE_GROUP_START;
  32. end_cmd = MMC_CMD_ERASE_GROUP_END;
  33. }
  34. cmd.cmdidx = start_cmd;
  35. cmd.cmdarg = start;
  36. cmd.resp_type = MMC_RSP_R1;
  37. err = mmc_send_cmd(mmc, &cmd, NULL);
  38. if (err)
  39. goto err_out;
  40. cmd.cmdidx = end_cmd;
  41. cmd.cmdarg = end;
  42. err = mmc_send_cmd(mmc, &cmd, NULL);
  43. if (err)
  44. goto err_out;
  45. cmd.cmdidx = MMC_CMD_ERASE;
  46. cmd.cmdarg = MMC_ERASE_ARG;
  47. cmd.resp_type = MMC_RSP_R1b;
  48. err = mmc_send_cmd(mmc, &cmd, NULL);
  49. if (err)
  50. goto err_out;
  51. return 0;
  52. err_out:
  53. puts("mmc erase failed\n");
  54. return err;
  55. }
  56. #if CONFIG_IS_ENABLED(BLK)
  57. ulong mmc_berase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt)
  58. #else
  59. ulong mmc_berase(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt)
  60. #endif
  61. {
  62. #if CONFIG_IS_ENABLED(BLK)
  63. struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
  64. #endif
  65. int dev_num = block_dev->devnum;
  66. int err = 0;
  67. u32 start_rem, blkcnt_rem;
  68. struct mmc *mmc = find_mmc_device(dev_num);
  69. lbaint_t blk = 0, blk_r = 0;
  70. int timeout_ms = 1000;
  71. if (!mmc)
  72. return -1;
  73. err = blk_select_hwpart_devnum(IF_TYPE_MMC, dev_num,
  74. block_dev->hwpart);
  75. if (err < 0)
  76. return -1;
  77. /*
  78. * We want to see if the requested start or total block count are
  79. * unaligned. We discard the whole numbers and only care about the
  80. * remainder.
  81. */
  82. err = div_u64_rem(start, mmc->erase_grp_size, &start_rem);
  83. err = div_u64_rem(blkcnt, mmc->erase_grp_size, &blkcnt_rem);
  84. if (start_rem || blkcnt_rem)
  85. printf("\n\nCaution! Your devices Erase group is 0x%x\n"
  86. "The erase range would be change to "
  87. "0x" LBAF "~0x" LBAF "\n\n",
  88. mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
  89. ((start + blkcnt + mmc->erase_grp_size)
  90. & ~(mmc->erase_grp_size - 1)) - 1);
  91. while (blk < blkcnt) {
  92. if (IS_SD(mmc) && mmc->ssr.au) {
  93. blk_r = ((blkcnt - blk) > mmc->ssr.au) ?
  94. mmc->ssr.au : (blkcnt - blk);
  95. } else {
  96. blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
  97. mmc->erase_grp_size : (blkcnt - blk);
  98. }
  99. err = mmc_erase_t(mmc, start + blk, blk_r);
  100. if (err)
  101. break;
  102. blk += blk_r;
  103. /* Waiting for the ready status */
  104. if (mmc_poll_for_busy(mmc, timeout_ms))
  105. return 0;
  106. }
  107. return blk;
  108. }
  109. static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start,
  110. lbaint_t blkcnt, const void *src)
  111. {
  112. struct mmc_cmd cmd;
  113. struct mmc_data data;
  114. int timeout_ms = 1000;
  115. if ((start + blkcnt) > mmc_get_blk_desc(mmc)->lba) {
  116. printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
  117. start + blkcnt, mmc_get_blk_desc(mmc)->lba);
  118. return 0;
  119. }
  120. if (blkcnt == 0)
  121. return 0;
  122. else if (blkcnt == 1)
  123. cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
  124. else
  125. cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
  126. if (mmc->high_capacity)
  127. cmd.cmdarg = start;
  128. else
  129. cmd.cmdarg = start * mmc->write_bl_len;
  130. cmd.resp_type = MMC_RSP_R1;
  131. data.src = src;
  132. data.blocks = blkcnt;
  133. data.blocksize = mmc->write_bl_len;
  134. data.flags = MMC_DATA_WRITE;
  135. if (mmc_send_cmd(mmc, &cmd, &data)) {
  136. printf("mmc write failed\n");
  137. return 0;
  138. }
  139. /* SPI multiblock writes terminate using a special
  140. * token, not a STOP_TRANSMISSION request.
  141. */
  142. if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
  143. cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
  144. cmd.cmdarg = 0;
  145. cmd.resp_type = MMC_RSP_R1b;
  146. if (mmc_send_cmd(mmc, &cmd, NULL)) {
  147. printf("mmc fail to send stop cmd\n");
  148. return 0;
  149. }
  150. }
  151. /* Waiting for the ready status */
  152. if (mmc_poll_for_busy(mmc, timeout_ms))
  153. return 0;
  154. return blkcnt;
  155. }
  156. #if CONFIG_IS_ENABLED(BLK)
  157. ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
  158. const void *src)
  159. #else
  160. ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
  161. const void *src)
  162. #endif
  163. {
  164. #if CONFIG_IS_ENABLED(BLK)
  165. struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
  166. #endif
  167. int dev_num = block_dev->devnum;
  168. lbaint_t cur, blocks_todo = blkcnt;
  169. int err;
  170. struct mmc *mmc = find_mmc_device(dev_num);
  171. if (!mmc)
  172. return 0;
  173. err = blk_select_hwpart_devnum(IF_TYPE_MMC, dev_num, block_dev->hwpart);
  174. if (err < 0)
  175. return 0;
  176. if (mmc_set_blocklen(mmc, mmc->write_bl_len))
  177. return 0;
  178. do {
  179. cur = (blocks_todo > mmc->cfg->b_max) ?
  180. mmc->cfg->b_max : blocks_todo;
  181. if (mmc_write_blocks(mmc, start, cur, src) != cur)
  182. return 0;
  183. blocks_todo -= cur;
  184. start += cur;
  185. src += cur * mmc->write_bl_len;
  186. } while (blocks_todo > 0);
  187. return blkcnt;
  188. }