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 #if CONFIG_IS_ENABLED(DM_MMC_OPS) 19 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, 20 struct mmc_data *data) 21 { 22 struct mmc *mmc = mmc_get_mmc_dev(dev); 23 struct dm_mmc_ops *ops = mmc_get_ops(dev); 24 int ret; 25 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 return ret; 34 } 35 36 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) 37 { 38 return dm_mmc_send_cmd(mmc->dev, cmd, data); 39 } 40 41 int dm_mmc_set_ios(struct udevice *dev) 42 { 43 struct dm_mmc_ops *ops = mmc_get_ops(dev); 44 45 if (!ops->set_ios) 46 return -ENOSYS; 47 return ops->set_ios(dev); 48 } 49 50 int mmc_set_ios(struct mmc *mmc) 51 { 52 return dm_mmc_set_ios(mmc->dev); 53 } 54 55 int dm_mmc_get_wp(struct udevice *dev) 56 { 57 struct dm_mmc_ops *ops = mmc_get_ops(dev); 58 59 if (!ops->get_wp) 60 return -ENOSYS; 61 return ops->get_wp(dev); 62 } 63 64 int mmc_getwp(struct mmc *mmc) 65 { 66 return dm_mmc_get_wp(mmc->dev); 67 } 68 69 int dm_mmc_get_cd(struct udevice *dev) 70 { 71 struct dm_mmc_ops *ops = mmc_get_ops(dev); 72 73 if (!ops->get_cd) 74 return -ENOSYS; 75 return ops->get_cd(dev); 76 } 77 78 int mmc_getcd(struct mmc *mmc) 79 { 80 return dm_mmc_get_cd(mmc->dev); 81 } 82 #endif 83 84 struct mmc *mmc_get_mmc_dev(struct udevice *dev) 85 { 86 struct mmc_uclass_priv *upriv; 87 88 if (!device_active(dev)) 89 return NULL; 90 upriv = dev_get_uclass_priv(dev); 91 return upriv->mmc; 92 } 93 94 #if CONFIG_IS_ENABLED(BLK) 95 struct mmc *find_mmc_device(int dev_num) 96 { 97 struct udevice *dev, *mmc_dev; 98 int ret; 99 100 ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev); 101 102 if (ret) { 103 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 104 printf("MMC Device %d not found\n", dev_num); 105 #endif 106 return NULL; 107 } 108 109 mmc_dev = dev_get_parent(dev); 110 111 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 112 113 return mmc; 114 } 115 116 int get_mmc_num(void) 117 { 118 return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0); 119 } 120 121 int mmc_get_next_devnum(void) 122 { 123 return blk_find_max_devnum(IF_TYPE_MMC); 124 } 125 126 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) 127 { 128 struct blk_desc *desc; 129 struct udevice *dev; 130 131 device_find_first_child(mmc->dev, &dev); 132 if (!dev) 133 return NULL; 134 desc = dev_get_uclass_platdata(dev); 135 136 return desc; 137 } 138 139 void mmc_do_preinit(void) 140 { 141 struct udevice *dev; 142 struct uclass *uc; 143 int ret; 144 145 ret = uclass_get(UCLASS_MMC, &uc); 146 if (ret) 147 return; 148 uclass_foreach_dev(dev, uc) { 149 struct mmc *m = mmc_get_mmc_dev(dev); 150 151 if (!m) 152 continue; 153 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 154 mmc_set_preinit(m, 1); 155 #endif 156 if (m->preinit) 157 mmc_start_init(m); 158 } 159 } 160 161 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 162 void print_mmc_devices(char separator) 163 { 164 struct udevice *dev; 165 char *mmc_type; 166 bool first = true; 167 168 for (uclass_first_device(UCLASS_MMC, &dev); 169 dev; 170 uclass_next_device(&dev), first = false) { 171 struct mmc *m = mmc_get_mmc_dev(dev); 172 173 if (!first) { 174 printf("%c", separator); 175 if (separator != '\n') 176 puts(" "); 177 } 178 if (m->has_init) 179 mmc_type = IS_SD(m) ? "SD" : "eMMC"; 180 else 181 mmc_type = NULL; 182 183 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum); 184 if (mmc_type) 185 printf(" (%s)", mmc_type); 186 } 187 188 printf("\n"); 189 } 190 191 #else 192 void print_mmc_devices(char separator) { } 193 #endif 194 195 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg) 196 { 197 struct blk_desc *bdesc; 198 struct udevice *bdev; 199 int ret, devnum = -1; 200 201 #if CONFIG_IS_ENABLED(DM_MMC_OPS) 202 if (!mmc_get_ops(dev)) 203 return -ENOSYS; 204 #endif 205 #ifndef CONFIG_SPL_BUILD 206 /* Use the fixed index with aliase node's index */ 207 ret = dev_read_alias_seq(dev, &devnum); 208 debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum); 209 #endif 210 211 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, 212 devnum, 512, 0, &bdev); 213 if (ret) { 214 debug("Cannot create block device\n"); 215 return ret; 216 } 217 bdesc = dev_get_uclass_platdata(bdev); 218 mmc->cfg = cfg; 219 mmc->priv = dev; 220 221 /* the following chunk was from mmc_register() */ 222 223 /* Setup dsr related values */ 224 mmc->dsr_imp = 0; 225 mmc->dsr = 0xffffffff; 226 /* Setup the universal parts of the block interface just once */ 227 bdesc->removable = 1; 228 229 /* setup initial part type */ 230 bdesc->part_type = cfg->part_type; 231 mmc->dev = dev; 232 233 return 0; 234 } 235 236 int mmc_unbind(struct udevice *dev) 237 { 238 struct udevice *bdev; 239 240 device_find_first_child(dev, &bdev); 241 if (bdev) { 242 device_remove(bdev, DM_REMOVE_NORMAL); 243 device_unbind(bdev); 244 } 245 246 return 0; 247 } 248 249 static int mmc_select_hwpart(struct udevice *bdev, int hwpart) 250 { 251 struct udevice *mmc_dev = dev_get_parent(bdev); 252 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 253 struct blk_desc *desc = dev_get_uclass_platdata(bdev); 254 255 if (desc->hwpart == hwpart) 256 return 0; 257 258 if (mmc->part_config == MMCPART_NOAVAILABLE) 259 return -EMEDIUMTYPE; 260 261 return mmc_switch_part(mmc, hwpart); 262 } 263 264 static int mmc_blk_probe(struct udevice *dev) 265 { 266 struct udevice *mmc_dev = dev_get_parent(dev); 267 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev); 268 struct mmc *mmc = upriv->mmc; 269 int ret; 270 271 ret = mmc_init(mmc); 272 if (ret) { 273 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret); 274 return ret; 275 } 276 277 return 0; 278 } 279 280 static const struct blk_ops mmc_blk_ops = { 281 .read = mmc_bread, 282 #ifndef CONFIG_SPL_BUILD 283 .write = mmc_bwrite, 284 .erase = mmc_berase, 285 #endif 286 .select_hwpart = mmc_select_hwpart, 287 }; 288 289 U_BOOT_DRIVER(mmc_blk) = { 290 .name = "mmc_blk", 291 .id = UCLASS_BLK, 292 .ops = &mmc_blk_ops, 293 .probe = mmc_blk_probe, 294 }; 295 #endif /* CONFIG_BLK */ 296 297 U_BOOT_DRIVER(mmc) = { 298 .name = "mmc", 299 .id = UCLASS_MMC, 300 }; 301 302 UCLASS_DRIVER(mmc) = { 303 .id = UCLASS_MMC, 304 .name = "mmc", 305 .flags = DM_UC_FLAG_SEQ_ALIAS, 306 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv), 307 }; 308