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