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 cmd->cmdidx != MMC_CMD_READ_MULTIPLE_BLOCK && 38 cmd->cmdidx != MMC_CMD_WRITE_MULTIPLE_BLOCK && 39 cmd->cmdidx != MMC_CMD_STOP_TRANSMISSION ) { 40 /* execute tuning at last retry. */ 41 if (retry_time == 1 && 42 mmc->timing == MMC_TIMING_MMC_HS200 && 43 ops->execute_tuning) { 44 u32 opcode = MMC_SEND_TUNING_BLOCK_HS200; 45 ops->execute_tuning(mmc->dev, opcode); 46 } 47 if (retry_time-- > 0) 48 goto retry; 49 printf("MMC error: The cmd index is %d, ret is %d\n", cmd->cmdidx, ret); 50 } 51 52 return ret; 53 } 54 55 #ifdef CONFIG_SPL_BLK_READ_PREPARE 56 int dm_mmc_send_cmd_prepare(struct udevice *dev, struct mmc_cmd *cmd, 57 struct mmc_data *data) 58 { 59 struct mmc *mmc = mmc_get_mmc_dev(dev); 60 struct dm_mmc_ops *ops = mmc_get_ops(dev); 61 int ret; 62 63 mmmc_trace_before_send(mmc, cmd); 64 if (ops->send_cmd_prepare) 65 ret = ops->send_cmd_prepare(dev, cmd, data); 66 else 67 ret = -ENOSYS; 68 mmmc_trace_after_send(mmc, cmd, ret); 69 if (ret && cmd->cmdidx != SD_CMD_SEND_IF_COND 70 && cmd->cmdidx != MMC_CMD_APP_CMD) 71 printf("MMC error: The cmd index is %d, ret is %d\n", cmd->cmdidx, ret); 72 73 return ret; 74 } 75 #endif 76 77 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 78 { 79 return dm_mmc_send_cmd(mmc->dev, cmd, data); 80 } 81 82 #ifdef CONFIG_SPL_BLK_READ_PREPARE 83 int mmc_send_cmd_prepare(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 84 { 85 return dm_mmc_send_cmd_prepare(mmc->dev, cmd, data); 86 } 87 #endif 88 89 bool mmc_card_busy(struct mmc *mmc) 90 { 91 struct dm_mmc_ops *ops = mmc_get_ops(mmc->dev); 92 93 if (!ops->card_busy) 94 return -ENOSYS; 95 return ops->card_busy(mmc->dev); 96 } 97 98 bool mmc_can_card_busy(struct mmc *mmc) 99 { 100 struct dm_mmc_ops *ops = mmc_get_ops(mmc->dev); 101 102 return !!ops->card_busy; 103 } 104 105 int dm_mmc_set_ios(struct udevice *dev) 106 { 107 struct dm_mmc_ops *ops = mmc_get_ops(dev); 108 109 if (!ops->set_ios) 110 return -ENOSYS; 111 return ops->set_ios(dev); 112 } 113 114 int mmc_set_ios(struct mmc *mmc) 115 { 116 return dm_mmc_set_ios(mmc->dev); 117 } 118 119 int dm_mmc_get_wp(struct udevice *dev) 120 { 121 struct dm_mmc_ops *ops = mmc_get_ops(dev); 122 123 if (!ops->get_wp) 124 return -ENOSYS; 125 return ops->get_wp(dev); 126 } 127 128 int mmc_getwp(struct mmc *mmc) 129 { 130 return dm_mmc_get_wp(mmc->dev); 131 } 132 133 int dm_mmc_get_cd(struct udevice *dev) 134 { 135 struct dm_mmc_ops *ops = mmc_get_ops(dev); 136 137 if (!ops->get_cd) 138 return -ENOSYS; 139 return ops->get_cd(dev); 140 } 141 142 int mmc_getcd(struct mmc *mmc) 143 { 144 return dm_mmc_get_cd(mmc->dev); 145 } 146 147 static int dm_mmc_set_enhanced_strobe(struct udevice *dev) 148 { 149 struct dm_mmc_ops *ops = mmc_get_ops(dev); 150 151 if (ops->set_enhanced_strobe) 152 return ops->set_enhanced_strobe(dev); 153 154 return -ENOTSUPP; 155 } 156 157 int mmc_set_enhanced_strobe(struct mmc *mmc) 158 { 159 return dm_mmc_set_enhanced_strobe(mmc->dev); 160 } 161 struct mmc *mmc_get_mmc_dev(struct udevice *dev) 162 { 163 struct mmc_uclass_priv *upriv; 164 165 if (!device_active(dev)) 166 return NULL; 167 upriv = dev_get_uclass_priv(dev); 168 return upriv->mmc; 169 } 170 171 #if CONFIG_IS_ENABLED(BLK) 172 struct mmc *find_mmc_device(int dev_num) 173 { 174 struct udevice *dev, *mmc_dev; 175 int ret; 176 177 ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev); 178 179 if (ret) { 180 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 181 printf("MMC Device %d not found\n", dev_num); 182 #endif 183 return NULL; 184 } 185 186 mmc_dev = dev_get_parent(dev); 187 188 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 189 190 return mmc; 191 } 192 193 int get_mmc_num(void) 194 { 195 return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0); 196 } 197 198 int mmc_get_next_devnum(void) 199 { 200 return blk_find_max_devnum(IF_TYPE_MMC); 201 } 202 203 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) 204 { 205 struct blk_desc *desc; 206 struct udevice *dev; 207 208 device_find_first_child(mmc->dev, &dev); 209 if (!dev) 210 return NULL; 211 desc = dev_get_uclass_platdata(dev); 212 213 return desc; 214 } 215 216 void mmc_do_preinit(void) 217 { 218 struct udevice *dev; 219 struct uclass *uc; 220 int ret; 221 222 ret = uclass_get(UCLASS_MMC, &uc); 223 if (ret) 224 return; 225 uclass_foreach_dev(dev, uc) { 226 struct mmc *m = mmc_get_mmc_dev(dev); 227 228 if (!m) 229 continue; 230 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 231 mmc_set_preinit(m, 1); 232 #endif 233 if (m->preinit) 234 mmc_start_init(m); 235 } 236 } 237 238 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 239 void print_mmc_devices(char separator) 240 { 241 struct udevice *dev; 242 char *mmc_type; 243 bool first = true; 244 245 for (uclass_first_device(UCLASS_MMC, &dev); 246 dev; 247 uclass_next_device(&dev), first = false) { 248 struct mmc *m = mmc_get_mmc_dev(dev); 249 250 if (!first) { 251 printf("%c", separator); 252 if (separator != '\n') 253 puts(" "); 254 } 255 if (m->has_init) 256 mmc_type = IS_SD(m) ? "SD" : "eMMC"; 257 else 258 mmc_type = NULL; 259 260 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum); 261 if (mmc_type) 262 printf(" (%s)", mmc_type); 263 } 264 265 printf("\n"); 266 } 267 268 #else 269 void print_mmc_devices(char separator) { } 270 #endif 271 272 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg) 273 { 274 struct blk_desc *bdesc; 275 struct udevice *bdev; 276 int ret, devnum = -1; 277 278 if (!mmc_get_ops(dev)) 279 return -ENOSYS; 280 /* Use the fixed index with aliase node's index */ 281 ret = dev_read_alias_seq(dev, &devnum); 282 debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum); 283 284 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, 285 devnum, 512, 0, &bdev); 286 if (ret) { 287 debug("Cannot create block device\n"); 288 return ret; 289 } 290 bdesc = dev_get_uclass_platdata(bdev); 291 mmc->cfg = cfg; 292 mmc->priv = dev; 293 294 /* the following chunk was from mmc_register() */ 295 296 /* Setup dsr related values */ 297 mmc->dsr_imp = 0; 298 mmc->dsr = 0xffffffff; 299 /* Setup the universal parts of the block interface just once */ 300 bdesc->removable = 1; 301 302 /* setup initial part type */ 303 bdesc->part_type = cfg->part_type; 304 mmc->dev = dev; 305 306 return 0; 307 } 308 309 int mmc_unbind(struct udevice *dev) 310 { 311 struct udevice *bdev; 312 313 device_find_first_child(dev, &bdev); 314 if (bdev) { 315 device_remove(bdev, DM_REMOVE_NORMAL); 316 device_unbind(bdev); 317 } 318 319 return 0; 320 } 321 322 static int mmc_select_hwpart(struct udevice *bdev, int hwpart) 323 { 324 struct udevice *mmc_dev = dev_get_parent(bdev); 325 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 326 struct blk_desc *desc = dev_get_uclass_platdata(bdev); 327 328 if (desc->hwpart == hwpart) 329 return 0; 330 331 if (mmc->part_config == MMCPART_NOAVAILABLE) 332 return -EMEDIUMTYPE; 333 334 return mmc_switch_part(mmc, hwpart); 335 } 336 337 static int mmc_blk_probe(struct udevice *dev) 338 { 339 struct udevice *mmc_dev = dev_get_parent(dev); 340 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev); 341 struct mmc *mmc = upriv->mmc; 342 int ret; 343 344 ret = mmc_init(mmc); 345 if (ret) { 346 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret); 347 return ret; 348 } 349 350 return 0; 351 } 352 353 static const struct blk_ops mmc_blk_ops = { 354 .read = mmc_bread, 355 #if CONFIG_IS_ENABLED(MMC_WRITE) 356 .write = mmc_bwrite, 357 .erase = mmc_berase, 358 #endif 359 .select_hwpart = mmc_select_hwpart, 360 }; 361 362 U_BOOT_DRIVER(mmc_blk) = { 363 .name = "mmc_blk", 364 .id = UCLASS_BLK, 365 .ops = &mmc_blk_ops, 366 .probe = mmc_blk_probe, 367 }; 368 #endif /* CONFIG_BLK */ 369 370 U_BOOT_DRIVER(mmc) = { 371 .name = "mmc", 372 .id = UCLASS_MMC, 373 }; 374 375 UCLASS_DRIVER(mmc) = { 376 .id = UCLASS_MMC, 377 .name = "mmc", 378 .flags = DM_UC_FLAG_SEQ_ALIAS, 379 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv), 380 }; 381