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 #ifdef CONFIG_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 #ifdef CONFIG_BLK 95 struct mmc *find_mmc_device(int dev_num) 96 { 97 struct udevice *dev, *mmc_dev; 98 int ret; 99 100 ret = blk_get_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 return mmc_get_mmc_dev(mmc_dev); 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 #ifndef CONFIG_SPL_BUILD 200 /* Use the fixed index with aliase node's index */ 201 fdtdec_get_alias_seq(gd->fdt_blob, "mmc", dev->of_offset, &devnum); 202 #endif 203 204 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, 205 devnum, 512, 0, &bdev); 206 if (ret) { 207 debug("Cannot create block device\n"); 208 return ret; 209 } 210 bdesc = dev_get_uclass_platdata(bdev); 211 mmc->cfg = cfg; 212 mmc->priv = dev; 213 214 /* the following chunk was from mmc_register() */ 215 216 /* Setup dsr related values */ 217 mmc->dsr_imp = 0; 218 mmc->dsr = 0xffffffff; 219 /* Setup the universal parts of the block interface just once */ 220 bdesc->removable = 1; 221 222 /* setup initial part type */ 223 bdesc->part_type = cfg->part_type; 224 mmc->dev = dev; 225 226 return 0; 227 } 228 229 int mmc_unbind(struct udevice *dev) 230 { 231 struct udevice *bdev; 232 233 device_find_first_child(dev, &bdev); 234 if (bdev) { 235 device_remove(bdev, DM_REMOVE_NORMAL); 236 device_unbind(bdev); 237 } 238 239 return 0; 240 } 241 242 static int mmc_select_hwpart(struct udevice *bdev, int hwpart) 243 { 244 struct udevice *mmc_dev = dev_get_parent(bdev); 245 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 246 struct blk_desc *desc = dev_get_uclass_platdata(bdev); 247 248 if (desc->hwpart == hwpart) 249 return 0; 250 251 if (mmc->part_config == MMCPART_NOAVAILABLE) 252 return -EMEDIUMTYPE; 253 254 return mmc_switch_part(mmc, hwpart); 255 } 256 257 static int mmc_blk_probe(struct udevice *dev) 258 { 259 struct blk_desc *block_dev = dev_get_uclass_platdata(dev); 260 int dev_num = block_dev->devnum; 261 struct mmc *mmc = find_mmc_device(dev_num); 262 263 if (!mmc) 264 return -ENODEV; 265 return mmc_init(mmc); 266 } 267 268 static const struct blk_ops mmc_blk_ops = { 269 .read = mmc_bread, 270 #ifndef CONFIG_SPL_BUILD 271 .write = mmc_bwrite, 272 .erase = mmc_berase, 273 #endif 274 .select_hwpart = mmc_select_hwpart, 275 }; 276 277 U_BOOT_DRIVER(mmc_blk) = { 278 .name = "mmc_blk", 279 .id = UCLASS_BLK, 280 .ops = &mmc_blk_ops, 281 .probe = mmc_blk_probe, 282 }; 283 #endif /* CONFIG_BLK */ 284 285 U_BOOT_DRIVER(mmc) = { 286 .name = "mmc", 287 .id = UCLASS_MMC, 288 }; 289 290 UCLASS_DRIVER(mmc) = { 291 .id = UCLASS_MMC, 292 .name = "mmc", 293 .flags = DM_UC_FLAG_SEQ_ALIAS, 294 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv), 295 }; 296