1 /* 2 * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver 3 * 4 * Header file for Host Controller registers and I/O accessors. 5 * 6 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or (at 11 * your option) any later version. 12 */ 13 #ifndef __SDHCI_HW_H 14 #define __SDHCI_HW_H 15 16 #include <linux/scatterlist.h> 17 #include <linux/compiler.h> 18 #include <linux/types.h> 19 #include <linux/io.h> 20 21 #include <linux/mmc/sdhci.h> 22 23 /* 24 * Controller registers 25 */ 26 27 #define SDHCI_DMA_ADDRESS 0x00 28 #define SDHCI_ARGUMENT2 SDHCI_DMA_ADDRESS 29 30 #define SDHCI_BLOCK_SIZE 0x04 31 #define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF)) 32 33 #define SDHCI_BLOCK_COUNT 0x06 34 35 #define SDHCI_ARGUMENT 0x08 36 37 #define SDHCI_TRANSFER_MODE 0x0C 38 #define SDHCI_TRNS_DMA 0x01 39 #define SDHCI_TRNS_BLK_CNT_EN 0x02 40 #define SDHCI_TRNS_AUTO_CMD12 0x04 41 #define SDHCI_TRNS_AUTO_CMD23 0x08 42 #define SDHCI_TRNS_READ 0x10 43 #define SDHCI_TRNS_MULTI 0x20 44 45 #define SDHCI_COMMAND 0x0E 46 #define SDHCI_CMD_RESP_MASK 0x03 47 #define SDHCI_CMD_CRC 0x08 48 #define SDHCI_CMD_INDEX 0x10 49 #define SDHCI_CMD_DATA 0x20 50 #define SDHCI_CMD_ABORTCMD 0xC0 51 52 #define SDHCI_CMD_RESP_NONE 0x00 53 #define SDHCI_CMD_RESP_LONG 0x01 54 #define SDHCI_CMD_RESP_SHORT 0x02 55 #define SDHCI_CMD_RESP_SHORT_BUSY 0x03 56 57 #define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff)) 58 #define SDHCI_GET_CMD(c) ((c>>8) & 0x3f) 59 60 #define SDHCI_RESPONSE 0x10 61 62 #define SDHCI_BUFFER 0x20 63 64 #define SDHCI_PRESENT_STATE 0x24 65 #define SDHCI_CMD_INHIBIT 0x00000001 66 #define SDHCI_DATA_INHIBIT 0x00000002 67 #define SDHCI_DOING_WRITE 0x00000100 68 #define SDHCI_DOING_READ 0x00000200 69 #define SDHCI_SPACE_AVAILABLE 0x00000400 70 #define SDHCI_DATA_AVAILABLE 0x00000800 71 #define SDHCI_CARD_PRESENT 0x00010000 72 #define SDHCI_WRITE_PROTECT 0x00080000 73 #define SDHCI_DATA_LVL_MASK 0x00F00000 74 #define SDHCI_DATA_LVL_SHIFT 20 75 76 #define SDHCI_HOST_CONTROL 0x28 77 #define SDHCI_CTRL_LED 0x01 78 #define SDHCI_CTRL_4BITBUS 0x02 79 #define SDHCI_CTRL_HISPD 0x04 80 #define SDHCI_CTRL_DMA_MASK 0x18 81 #define SDHCI_CTRL_SDMA 0x00 82 #define SDHCI_CTRL_ADMA1 0x08 83 #define SDHCI_CTRL_ADMA32 0x10 84 #define SDHCI_CTRL_ADMA64 0x18 85 #define SDHCI_CTRL_8BITBUS 0x20 86 87 #define SDHCI_POWER_CONTROL 0x29 88 #define SDHCI_POWER_ON 0x01 89 #define SDHCI_POWER_180 0x0A 90 #define SDHCI_POWER_300 0x0C 91 #define SDHCI_POWER_330 0x0E 92 93 #define SDHCI_BLOCK_GAP_CONTROL 0x2A 94 95 #define SDHCI_WAKE_UP_CONTROL 0x2B 96 #define SDHCI_WAKE_ON_INT 0x01 97 #define SDHCI_WAKE_ON_INSERT 0x02 98 #define SDHCI_WAKE_ON_REMOVE 0x04 99 100 #define SDHCI_CLOCK_CONTROL 0x2C 101 #define SDHCI_DIVIDER_SHIFT 8 102 #define SDHCI_DIVIDER_HI_SHIFT 6 103 #define SDHCI_DIV_MASK 0xFF 104 #define SDHCI_DIV_MASK_LEN 8 105 #define SDHCI_DIV_HI_MASK 0x300 106 #define SDHCI_PROG_CLOCK_MODE 0x0020 107 #define SDHCI_CLOCK_CARD_EN 0x0004 108 #define SDHCI_CLOCK_INT_STABLE 0x0002 109 #define SDHCI_CLOCK_INT_EN 0x0001 110 111 #define SDHCI_TIMEOUT_CONTROL 0x2E 112 113 #define SDHCI_SOFTWARE_RESET 0x2F 114 #define SDHCI_RESET_ALL 0x01 115 #define SDHCI_RESET_CMD 0x02 116 #define SDHCI_RESET_DATA 0x04 117 118 #define SDHCI_INT_STATUS 0x30 119 #define SDHCI_INT_ENABLE 0x34 120 #define SDHCI_SIGNAL_ENABLE 0x38 121 #define SDHCI_INT_RESPONSE 0x00000001 122 #define SDHCI_INT_DATA_END 0x00000002 123 #define SDHCI_INT_DMA_END 0x00000008 124 #define SDHCI_INT_SPACE_AVAIL 0x00000010 125 #define SDHCI_INT_DATA_AVAIL 0x00000020 126 #define SDHCI_INT_CARD_INSERT 0x00000040 127 #define SDHCI_INT_CARD_REMOVE 0x00000080 128 #define SDHCI_INT_CARD_INT 0x00000100 129 #define SDHCI_INT_ERROR 0x00008000 130 #define SDHCI_INT_TIMEOUT 0x00010000 131 #define SDHCI_INT_CRC 0x00020000 132 #define SDHCI_INT_END_BIT 0x00040000 133 #define SDHCI_INT_INDEX 0x00080000 134 #define SDHCI_INT_DATA_TIMEOUT 0x00100000 135 #define SDHCI_INT_DATA_CRC 0x00200000 136 #define SDHCI_INT_DATA_END_BIT 0x00400000 137 #define SDHCI_INT_BUS_POWER 0x00800000 138 #define SDHCI_INT_ACMD12ERR 0x01000000 139 #define SDHCI_INT_ADMA_ERROR 0x02000000 140 141 #define SDHCI_INT_NORMAL_MASK 0x00007FFF 142 #define SDHCI_INT_ERROR_MASK 0xFFFF8000 143 144 #define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \ 145 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX) 146 #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ 147 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ 148 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ 149 SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR) 150 #define SDHCI_INT_ALL_MASK ((unsigned int)-1) 151 152 #define SDHCI_ACMD12_ERR 0x3C 153 154 #define SDHCI_HOST_CONTROL2 0x3E 155 #define SDHCI_CTRL_UHS_MASK 0x0007 156 #define SDHCI_CTRL_UHS_SDR12 0x0000 157 #define SDHCI_CTRL_UHS_SDR25 0x0001 158 #define SDHCI_CTRL_UHS_SDR50 0x0002 159 #define SDHCI_CTRL_UHS_SDR104 0x0003 160 #define SDHCI_CTRL_UHS_DDR50 0x0004 161 #define SDHCI_CTRL_HS_SDR200 0x0005 /* reserved value in SDIO spec */ 162 #define SDHCI_CTRL_VDD_180 0x0008 163 #define SDHCI_CTRL_DRV_TYPE_MASK 0x0030 164 #define SDHCI_CTRL_DRV_TYPE_B 0x0000 165 #define SDHCI_CTRL_DRV_TYPE_A 0x0010 166 #define SDHCI_CTRL_DRV_TYPE_C 0x0020 167 #define SDHCI_CTRL_DRV_TYPE_D 0x0030 168 #define SDHCI_CTRL_EXEC_TUNING 0x0040 169 #define SDHCI_CTRL_TUNED_CLK 0x0080 170 #define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000 171 172 #define SDHCI_CAPABILITIES 0x40 173 #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F 174 #define SDHCI_TIMEOUT_CLK_SHIFT 0 175 #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080 176 #define SDHCI_CLOCK_BASE_MASK 0x00003F00 177 #define SDHCI_CLOCK_V3_BASE_MASK 0x0000FF00 178 #define SDHCI_CLOCK_BASE_SHIFT 8 179 #define SDHCI_MAX_BLOCK_MASK 0x00030000 180 #define SDHCI_MAX_BLOCK_SHIFT 16 181 #define SDHCI_CAN_DO_8BIT 0x00040000 182 #define SDHCI_CAN_DO_ADMA2 0x00080000 183 #define SDHCI_CAN_DO_ADMA1 0x00100000 184 #define SDHCI_CAN_DO_HISPD 0x00200000 185 #define SDHCI_CAN_DO_SDMA 0x00400000 186 #define SDHCI_CAN_VDD_330 0x01000000 187 #define SDHCI_CAN_VDD_300 0x02000000 188 #define SDHCI_CAN_VDD_180 0x04000000 189 #define SDHCI_CAN_64BIT 0x10000000 190 191 #define SDHCI_SUPPORT_SDR50 0x00000001 192 #define SDHCI_SUPPORT_SDR104 0x00000002 193 #define SDHCI_SUPPORT_DDR50 0x00000004 194 #define SDHCI_DRIVER_TYPE_A 0x00000010 195 #define SDHCI_DRIVER_TYPE_C 0x00000020 196 #define SDHCI_DRIVER_TYPE_D 0x00000040 197 #define SDHCI_RETUNING_TIMER_COUNT_MASK 0x00000F00 198 #define SDHCI_RETUNING_TIMER_COUNT_SHIFT 8 199 #define SDHCI_USE_SDR50_TUNING 0x00002000 200 #define SDHCI_RETUNING_MODE_MASK 0x0000C000 201 #define SDHCI_RETUNING_MODE_SHIFT 14 202 #define SDHCI_CLOCK_MUL_MASK 0x00FF0000 203 #define SDHCI_CLOCK_MUL_SHIFT 16 204 205 #define SDHCI_CAPABILITIES_1 0x44 206 207 #define SDHCI_MAX_CURRENT 0x48 208 #define SDHCI_MAX_CURRENT_330_MASK 0x0000FF 209 #define SDHCI_MAX_CURRENT_330_SHIFT 0 210 #define SDHCI_MAX_CURRENT_300_MASK 0x00FF00 211 #define SDHCI_MAX_CURRENT_300_SHIFT 8 212 #define SDHCI_MAX_CURRENT_180_MASK 0xFF0000 213 #define SDHCI_MAX_CURRENT_180_SHIFT 16 214 #define SDHCI_MAX_CURRENT_MULTIPLIER 4 215 216 /* 4C-4F reserved for more max current */ 217 218 #define SDHCI_SET_ACMD12_ERROR 0x50 219 #define SDHCI_SET_INT_ERROR 0x52 220 221 #define SDHCI_ADMA_ERROR 0x54 222 223 /* 55-57 reserved */ 224 225 #define SDHCI_ADMA_ADDRESS 0x58 226 227 /* 60-FB reserved */ 228 229 #define SDHCI_SLOT_INT_STATUS 0xFC 230 231 #define SDHCI_HOST_VERSION 0xFE 232 #define SDHCI_VENDOR_VER_MASK 0xFF00 233 #define SDHCI_VENDOR_VER_SHIFT 8 234 #define SDHCI_SPEC_VER_MASK 0x00FF 235 #define SDHCI_SPEC_VER_SHIFT 0 236 #define SDHCI_SPEC_100 0 237 #define SDHCI_SPEC_200 1 238 #define SDHCI_SPEC_300 2 239 240 /* 241 * End of controller registers. 242 */ 243 244 #define SDHCI_MAX_DIV_SPEC_200 256 245 #define SDHCI_MAX_DIV_SPEC_300 2046 246 247 /* 248 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2. 249 */ 250 #define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024) 251 #define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12) 252 253 struct sdhci_ops { 254 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS 255 u32 (*read_l)(struct sdhci_host *host, int reg); 256 u16 (*read_w)(struct sdhci_host *host, int reg); 257 u8 (*read_b)(struct sdhci_host *host, int reg); 258 void (*write_l)(struct sdhci_host *host, u32 val, int reg); 259 void (*write_w)(struct sdhci_host *host, u16 val, int reg); 260 void (*write_b)(struct sdhci_host *host, u8 val, int reg); 261 #endif 262 263 void (*set_clock)(struct sdhci_host *host, unsigned int clock); 264 265 int (*enable_dma)(struct sdhci_host *host); 266 unsigned int (*get_max_clock)(struct sdhci_host *host); 267 unsigned int (*get_min_clock)(struct sdhci_host *host); 268 unsigned int (*get_timeout_clock)(struct sdhci_host *host); 269 int (*platform_8bit_width)(struct sdhci_host *host, 270 int width); 271 void (*platform_send_init_74_clocks)(struct sdhci_host *host, 272 u8 power_mode); 273 unsigned int (*get_ro)(struct sdhci_host *host); 274 void (*platform_reset_enter)(struct sdhci_host *host, u8 mask); 275 void (*platform_reset_exit)(struct sdhci_host *host, u8 mask); 276 int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); 277 void (*hw_reset)(struct sdhci_host *host); 278 void (*platform_suspend)(struct sdhci_host *host); 279 void (*platform_resume)(struct sdhci_host *host); 280 }; 281 282 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS 283 284 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg) 285 { 286 if (unlikely(host->ops->write_l)) 287 host->ops->write_l(host, val, reg); 288 else 289 writel(val, host->ioaddr + reg); 290 } 291 292 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg) 293 { 294 if (unlikely(host->ops->write_w)) 295 host->ops->write_w(host, val, reg); 296 else 297 writew(val, host->ioaddr + reg); 298 } 299 300 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg) 301 { 302 if (unlikely(host->ops->write_b)) 303 host->ops->write_b(host, val, reg); 304 else 305 writeb(val, host->ioaddr + reg); 306 } 307 308 static inline u32 sdhci_readl(struct sdhci_host *host, int reg) 309 { 310 if (unlikely(host->ops->read_l)) 311 return host->ops->read_l(host, reg); 312 else 313 return readl(host->ioaddr + reg); 314 } 315 316 static inline u16 sdhci_readw(struct sdhci_host *host, int reg) 317 { 318 if (unlikely(host->ops->read_w)) 319 return host->ops->read_w(host, reg); 320 else 321 return readw(host->ioaddr + reg); 322 } 323 324 static inline u8 sdhci_readb(struct sdhci_host *host, int reg) 325 { 326 if (unlikely(host->ops->read_b)) 327 return host->ops->read_b(host, reg); 328 else 329 return readb(host->ioaddr + reg); 330 } 331 332 #else 333 334 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg) 335 { 336 writel(val, host->ioaddr + reg); 337 } 338 339 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg) 340 { 341 writew(val, host->ioaddr + reg); 342 } 343 344 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg) 345 { 346 writeb(val, host->ioaddr + reg); 347 } 348 349 static inline u32 sdhci_readl(struct sdhci_host *host, int reg) 350 { 351 return readl(host->ioaddr + reg); 352 } 353 354 static inline u16 sdhci_readw(struct sdhci_host *host, int reg) 355 { 356 return readw(host->ioaddr + reg); 357 } 358 359 static inline u8 sdhci_readb(struct sdhci_host *host, int reg) 360 { 361 return readb(host->ioaddr + reg); 362 } 363 364 #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */ 365 366 extern struct sdhci_host *sdhci_alloc_host(struct device *dev, 367 size_t priv_size); 368 extern void sdhci_free_host(struct sdhci_host *host); 369 370 static inline void *sdhci_priv(struct sdhci_host *host) 371 { 372 return (void *)host->private; 373 } 374 375 extern void sdhci_card_detect(struct sdhci_host *host); 376 extern int sdhci_add_host(struct sdhci_host *host); 377 extern void sdhci_remove_host(struct sdhci_host *host, int dead); 378 379 #ifdef CONFIG_PM 380 extern int sdhci_suspend_host(struct sdhci_host *host); 381 extern int sdhci_resume_host(struct sdhci_host *host); 382 extern void sdhci_enable_irq_wakeups(struct sdhci_host *host); 383 #endif 384 385 #ifdef CONFIG_PM_RUNTIME 386 extern int sdhci_runtime_suspend_host(struct sdhci_host *host); 387 extern int sdhci_runtime_resume_host(struct sdhci_host *host); 388 #endif 389 390 #endif /* __SDHCI_HW_H */ 391