1 /* 2 * Copyright (C) 2015 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <mmc.h> 10 #include <dm.h> 11 #include <dm/device-internal.h> 12 #include <dm/lists.h> 13 #include <dm/root.h> 14 #include "mmc_private.h" 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, 19 struct mmc_data *data) 20 { 21 struct mmc *mmc = mmc_get_mmc_dev(dev); 22 struct dm_mmc_ops *ops = mmc_get_ops(dev); 23 int ret, retry_time = 3; 24 25 retry: 26 mmmc_trace_before_send(mmc, cmd); 27 if (ops->send_cmd) 28 ret = ops->send_cmd(dev, cmd, data); 29 else 30 ret = -ENOSYS; 31 mmmc_trace_after_send(mmc, cmd, ret); 32 33 if (ret && cmd->cmdidx != SD_CMD_SEND_IF_COND && 34 cmd->cmdidx != MMC_CMD_APP_CMD && 35 cmd->cmdidx != MMC_CMD_SEND_OP_COND && 36 cmd->cmdidx != MMC_SEND_TUNING_BLOCK_HS200) { 37 /* execute tuning at last retry. */ 38 if (retry_time == 1 && 39 mmc->timing == MMC_TIMING_MMC_HS200 && 40 ops->execute_tuning) { 41 u32 opcode = MMC_SEND_TUNING_BLOCK_HS200; 42 ops->execute_tuning(mmc->dev, opcode); 43 } 44 if (retry_time-- > 0) 45 goto retry; 46 printf("MMC error: The cmd index is %d, ret is %d\n", cmd->cmdidx, ret); 47 } 48 49 return ret; 50 } 51 52 #ifdef CONFIG_SPL_BLK_READ_PREPARE 53 int dm_mmc_send_cmd_prepare(struct udevice *dev, struct mmc_cmd *cmd, 54 struct mmc_data *data) 55 { 56 struct mmc *mmc = mmc_get_mmc_dev(dev); 57 struct dm_mmc_ops *ops = mmc_get_ops(dev); 58 int ret; 59 60 mmmc_trace_before_send(mmc, cmd); 61 if (ops->send_cmd_prepare) 62 ret = ops->send_cmd_prepare(dev, cmd, data); 63 else 64 ret = -ENOSYS; 65 mmmc_trace_after_send(mmc, cmd, ret); 66 if (ret && cmd->cmdidx != SD_CMD_SEND_IF_COND 67 && cmd->cmdidx != MMC_CMD_APP_CMD) 68 printf("MMC error: The cmd index is %d, ret is %d\n", cmd->cmdidx, ret); 69 70 return ret; 71 } 72 #endif 73 74 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 75 { 76 return dm_mmc_send_cmd(mmc->dev, cmd, data); 77 } 78 79 #ifdef CONFIG_SPL_BLK_READ_PREPARE 80 int mmc_send_cmd_prepare(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 81 { 82 return dm_mmc_send_cmd_prepare(mmc->dev, cmd, data); 83 } 84 #endif 85 86 bool mmc_card_busy(struct mmc *mmc) 87 { 88 struct dm_mmc_ops *ops = mmc_get_ops(mmc->dev); 89 90 if (!ops->card_busy) 91 return -ENOSYS; 92 return ops->card_busy(mmc->dev); 93 } 94 95 bool mmc_can_card_busy(struct mmc *mmc) 96 { 97 struct dm_mmc_ops *ops = mmc_get_ops(mmc->dev); 98 99 return !!ops->card_busy; 100 } 101 102 int dm_mmc_set_ios(struct udevice *dev) 103 { 104 struct dm_mmc_ops *ops = mmc_get_ops(dev); 105 106 if (!ops->set_ios) 107 return -ENOSYS; 108 return ops->set_ios(dev); 109 } 110 111 int mmc_set_ios(struct mmc *mmc) 112 { 113 return dm_mmc_set_ios(mmc->dev); 114 } 115 116 int dm_mmc_get_wp(struct udevice *dev) 117 { 118 struct dm_mmc_ops *ops = mmc_get_ops(dev); 119 120 if (!ops->get_wp) 121 return -ENOSYS; 122 return ops->get_wp(dev); 123 } 124 125 int mmc_getwp(struct mmc *mmc) 126 { 127 return dm_mmc_get_wp(mmc->dev); 128 } 129 130 int dm_mmc_get_cd(struct udevice *dev) 131 { 132 struct dm_mmc_ops *ops = mmc_get_ops(dev); 133 134 if (!ops->get_cd) 135 return -ENOSYS; 136 return ops->get_cd(dev); 137 } 138 139 int mmc_getcd(struct mmc *mmc) 140 { 141 return dm_mmc_get_cd(mmc->dev); 142 } 143 144 struct mmc *mmc_get_mmc_dev(struct udevice *dev) 145 { 146 struct mmc_uclass_priv *upriv; 147 148 if (!device_active(dev)) 149 return NULL; 150 upriv = dev_get_uclass_priv(dev); 151 return upriv->mmc; 152 } 153 154 #if CONFIG_IS_ENABLED(BLK) 155 struct mmc *find_mmc_device(int dev_num) 156 { 157 struct udevice *dev, *mmc_dev; 158 int ret; 159 160 ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev); 161 162 if (ret) { 163 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 164 printf("MMC Device %d not found\n", dev_num); 165 #endif 166 return NULL; 167 } 168 169 mmc_dev = dev_get_parent(dev); 170 171 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 172 173 return mmc; 174 } 175 176 int get_mmc_num(void) 177 { 178 return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0); 179 } 180 181 int mmc_get_next_devnum(void) 182 { 183 return blk_find_max_devnum(IF_TYPE_MMC); 184 } 185 186 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) 187 { 188 struct blk_desc *desc; 189 struct udevice *dev; 190 191 device_find_first_child(mmc->dev, &dev); 192 if (!dev) 193 return NULL; 194 desc = dev_get_uclass_platdata(dev); 195 196 return desc; 197 } 198 199 void mmc_do_preinit(void) 200 { 201 struct udevice *dev; 202 struct uclass *uc; 203 int ret; 204 205 ret = uclass_get(UCLASS_MMC, &uc); 206 if (ret) 207 return; 208 uclass_foreach_dev(dev, uc) { 209 struct mmc *m = mmc_get_mmc_dev(dev); 210 211 if (!m) 212 continue; 213 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 214 mmc_set_preinit(m, 1); 215 #endif 216 if (m->preinit) 217 mmc_start_init(m); 218 } 219 } 220 221 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 222 void print_mmc_devices(char separator) 223 { 224 struct udevice *dev; 225 char *mmc_type; 226 bool first = true; 227 228 for (uclass_first_device(UCLASS_MMC, &dev); 229 dev; 230 uclass_next_device(&dev), first = false) { 231 struct mmc *m = mmc_get_mmc_dev(dev); 232 233 if (!first) { 234 printf("%c", separator); 235 if (separator != '\n') 236 puts(" "); 237 } 238 if (m->has_init) 239 mmc_type = IS_SD(m) ? "SD" : "eMMC"; 240 else 241 mmc_type = NULL; 242 243 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum); 244 if (mmc_type) 245 printf(" (%s)", mmc_type); 246 } 247 248 printf("\n"); 249 } 250 251 #else 252 void print_mmc_devices(char separator) { } 253 #endif 254 255 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg) 256 { 257 struct blk_desc *bdesc; 258 struct udevice *bdev; 259 int ret, devnum = -1; 260 261 if (!mmc_get_ops(dev)) 262 return -ENOSYS; 263 /* Use the fixed index with aliase node's index */ 264 ret = dev_read_alias_seq(dev, &devnum); 265 debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum); 266 267 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, 268 devnum, 512, 0, &bdev); 269 if (ret) { 270 debug("Cannot create block device\n"); 271 return ret; 272 } 273 bdesc = dev_get_uclass_platdata(bdev); 274 mmc->cfg = cfg; 275 mmc->priv = dev; 276 277 /* the following chunk was from mmc_register() */ 278 279 /* Setup dsr related values */ 280 mmc->dsr_imp = 0; 281 mmc->dsr = 0xffffffff; 282 /* Setup the universal parts of the block interface just once */ 283 bdesc->removable = 1; 284 285 /* setup initial part type */ 286 bdesc->part_type = cfg->part_type; 287 mmc->dev = dev; 288 289 return 0; 290 } 291 292 int mmc_unbind(struct udevice *dev) 293 { 294 struct udevice *bdev; 295 296 device_find_first_child(dev, &bdev); 297 if (bdev) { 298 device_remove(bdev, DM_REMOVE_NORMAL); 299 device_unbind(bdev); 300 } 301 302 return 0; 303 } 304 305 static int mmc_select_hwpart(struct udevice *bdev, int hwpart) 306 { 307 struct udevice *mmc_dev = dev_get_parent(bdev); 308 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 309 struct blk_desc *desc = dev_get_uclass_platdata(bdev); 310 311 if (desc->hwpart == hwpart) 312 return 0; 313 314 if (mmc->part_config == MMCPART_NOAVAILABLE) 315 return -EMEDIUMTYPE; 316 317 return mmc_switch_part(mmc, hwpart); 318 } 319 320 static int mmc_blk_probe(struct udevice *dev) 321 { 322 struct udevice *mmc_dev = dev_get_parent(dev); 323 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev); 324 struct mmc *mmc = upriv->mmc; 325 int ret; 326 327 ret = mmc_init(mmc); 328 if (ret) { 329 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret); 330 return ret; 331 } 332 333 return 0; 334 } 335 336 static const struct blk_ops mmc_blk_ops = { 337 .read = mmc_bread, 338 #if CONFIG_IS_ENABLED(MMC_WRITE) 339 .write = mmc_bwrite, 340 .erase = mmc_berase, 341 #endif 342 .select_hwpart = mmc_select_hwpart, 343 }; 344 345 U_BOOT_DRIVER(mmc_blk) = { 346 .name = "mmc_blk", 347 .id = UCLASS_BLK, 348 .ops = &mmc_blk_ops, 349 .probe = mmc_blk_probe, 350 }; 351 #endif /* CONFIG_BLK */ 352 353 U_BOOT_DRIVER(mmc) = { 354 .name = "mmc", 355 .id = UCLASS_MMC, 356 }; 357 358 UCLASS_DRIVER(mmc) = { 359 .id = UCLASS_MMC, 360 .name = "mmc", 361 .flags = DM_UC_FLAG_SEQ_ALIAS, 362 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv), 363 }; 364