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 9 #include <config.h> 10 #include <common.h> 11 #include <dm.h> 12 #include <part.h> 13 #include <div64.h> 14 #include <linux/math64.h> 15 #include "mmc_private.h" 16 17 static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt) 18 { 19 struct mmc_cmd cmd; 20 ulong end; 21 int err, start_cmd, end_cmd; 22 23 if (mmc->high_capacity) { 24 end = start + blkcnt - 1; 25 } else { 26 end = (start + blkcnt - 1) * mmc->write_bl_len; 27 start *= mmc->write_bl_len; 28 } 29 30 if (IS_SD(mmc)) { 31 start_cmd = SD_CMD_ERASE_WR_BLK_START; 32 end_cmd = SD_CMD_ERASE_WR_BLK_END; 33 } else { 34 start_cmd = MMC_CMD_ERASE_GROUP_START; 35 end_cmd = MMC_CMD_ERASE_GROUP_END; 36 } 37 38 cmd.cmdidx = start_cmd; 39 cmd.cmdarg = start; 40 cmd.resp_type = MMC_RSP_R1; 41 42 err = mmc_send_cmd(mmc, &cmd, NULL); 43 if (err) 44 goto err_out; 45 46 cmd.cmdidx = end_cmd; 47 cmd.cmdarg = end; 48 49 err = mmc_send_cmd(mmc, &cmd, NULL); 50 if (err) 51 goto err_out; 52 53 cmd.cmdidx = MMC_CMD_ERASE; 54 cmd.cmdarg = MMC_ERASE_ARG; 55 cmd.resp_type = MMC_RSP_R1b; 56 57 err = mmc_send_cmd(mmc, &cmd, NULL); 58 if (err) 59 goto err_out; 60 61 return 0; 62 63 err_out: 64 puts("mmc erase failed\n"); 65 return err; 66 } 67 68 #ifdef CONFIG_BLK 69 ulong mmc_berase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt) 70 #else 71 ulong mmc_berase(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt) 72 #endif 73 { 74 #ifdef CONFIG_BLK 75 struct blk_desc *block_dev = dev_get_uclass_platdata(dev); 76 #endif 77 int dev_num = block_dev->devnum; 78 int err = 0; 79 u32 start_rem, blkcnt_rem; 80 struct mmc *mmc = find_mmc_device(dev_num); 81 lbaint_t blk = 0, blk_r = 0; 82 int timeout = 1000; 83 84 if (!mmc) 85 return -1; 86 87 err = blk_select_hwpart_devnum(IF_TYPE_MMC, dev_num, 88 block_dev->hwpart); 89 if (err < 0) 90 return -1; 91 92 /* 93 * We want to see if the requested start or total block count are 94 * unaligned. We discard the whole numbers and only care about the 95 * remainder. 96 */ 97 err = div_u64_rem(start, mmc->erase_grp_size, &start_rem); 98 err = div_u64_rem(blkcnt, mmc->erase_grp_size, &blkcnt_rem); 99 if (start_rem || blkcnt_rem) 100 printf("\n\nCaution! Your devices Erase group is 0x%x\n" 101 "The erase range would be change to " 102 "0x" LBAF "~0x" LBAF "\n\n", 103 mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1), 104 ((start + blkcnt + mmc->erase_grp_size) 105 & ~(mmc->erase_grp_size - 1)) - 1); 106 107 while (blk < blkcnt) { 108 if (IS_SD(mmc) && mmc->ssr.au) { 109 blk_r = ((blkcnt - blk) > mmc->ssr.au) ? 110 mmc->ssr.au : (blkcnt - blk); 111 } else { 112 blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ? 113 mmc->erase_grp_size : (blkcnt - blk); 114 } 115 err = mmc_erase_t(mmc, start + blk, blk_r); 116 if (err) 117 break; 118 119 blk += blk_r; 120 121 /* Waiting for the ready status */ 122 if (mmc_send_status(mmc, timeout)) 123 return 0; 124 } 125 126 return blk; 127 } 128 129 static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start, 130 lbaint_t blkcnt, const void *src) 131 { 132 struct mmc_cmd cmd; 133 struct mmc_data data; 134 int timeout = 1000; 135 136 if ((start + blkcnt) > mmc_get_blk_desc(mmc)->lba) { 137 printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", 138 start + blkcnt, mmc_get_blk_desc(mmc)->lba); 139 return 0; 140 } 141 142 if (blkcnt == 0) 143 return 0; 144 else if (blkcnt == 1) 145 cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; 146 else 147 cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; 148 149 if (mmc->high_capacity) 150 cmd.cmdarg = start; 151 else 152 cmd.cmdarg = start * mmc->write_bl_len; 153 154 cmd.resp_type = MMC_RSP_R1; 155 156 data.src = src; 157 data.blocks = blkcnt; 158 data.blocksize = mmc->write_bl_len; 159 data.flags = MMC_DATA_WRITE; 160 161 if (mmc_send_cmd(mmc, &cmd, &data)) { 162 printf("mmc write failed\n"); 163 return 0; 164 } 165 166 /* SPI multiblock writes terminate using a special 167 * token, not a STOP_TRANSMISSION request. 168 */ 169 if (!mmc_host_is_spi(mmc) && blkcnt > 1) { 170 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; 171 cmd.cmdarg = 0; 172 cmd.resp_type = MMC_RSP_R1b; 173 if (mmc_send_cmd(mmc, &cmd, NULL)) { 174 printf("mmc fail to send stop cmd\n"); 175 return 0; 176 } 177 } 178 179 /* Waiting for the ready status */ 180 if (mmc_send_status(mmc, timeout)) 181 return 0; 182 183 return blkcnt; 184 } 185 186 #ifdef CONFIG_BLK 187 ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, 188 const void *src) 189 #else 190 ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, 191 const void *src) 192 #endif 193 { 194 #ifdef CONFIG_BLK 195 struct blk_desc *block_dev = dev_get_uclass_platdata(dev); 196 #endif 197 int dev_num = block_dev->devnum; 198 lbaint_t cur, blocks_todo = blkcnt; 199 int err; 200 201 struct mmc *mmc = find_mmc_device(dev_num); 202 if (!mmc) 203 return 0; 204 205 err = blk_select_hwpart_devnum(IF_TYPE_MMC, dev_num, block_dev->hwpart); 206 if (err < 0) 207 return 0; 208 209 if (mmc_set_blocklen(mmc, mmc->write_bl_len)) 210 return 0; 211 212 do { 213 cur = (blocks_todo > mmc->cfg->b_max) ? 214 mmc->cfg->b_max : blocks_todo; 215 if (mmc_write_blocks(mmc, start, cur, src) != cur) 216 return 0; 217 blocks_todo -= cur; 218 start += cur; 219 src += cur * mmc->write_bl_len; 220 } while (blocks_todo > 0); 221 222 return blkcnt; 223 } 224