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