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