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