1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver 4 * 5 * Header file for Host Controller registers and I/O accessors. 6 * 7 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. 8 */ 9#ifndef __SDHCI_HW_H 10#define __SDHCI_HW_H 11 12#include <linux/bits.h> 13#include <linux/scatterlist.h> 14#include <linux/compiler.h> 15#include <linux/types.h> 16#include <linux/io.h> 17#include <linux/leds.h> 18#include <linux/interrupt.h> 19 20#include <linux/mmc/host.h> 21 22/* 23 * Controller registers 24 */ 25 26#define SDHCI_DMA_ADDRESS 0x00 27#define SDHCI_ARGUMENT2 SDHCI_DMA_ADDRESS 28#define SDHCI_32BIT_BLK_CNT 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_AUTO_SEL 0x0C 43#define SDHCI_TRNS_READ 0x10 44#define SDHCI_TRNS_MULTI 0x20 45 46#define SDHCI_COMMAND 0x0E 47#define SDHCI_CMD_RESP_MASK 0x03 48#define SDHCI_CMD_CRC 0x08 49#define SDHCI_CMD_INDEX 0x10 50#define SDHCI_CMD_DATA 0x20 51#define SDHCI_CMD_ABORTCMD 0xC0 52 53#define SDHCI_CMD_RESP_NONE 0x00 54#define SDHCI_CMD_RESP_LONG 0x01 55#define SDHCI_CMD_RESP_SHORT 0x02 56#define SDHCI_CMD_RESP_SHORT_BUSY 0x03 57 58#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff)) 59#define SDHCI_GET_CMD(c) ((c>>8) & 0x3f) 60 61#define SDHCI_RESPONSE 0x10 62 63#define SDHCI_BUFFER 0x20 64 65#define SDHCI_PRESENT_STATE 0x24 66#define SDHCI_CMD_INHIBIT 0x00000001 67#define SDHCI_DATA_INHIBIT 0x00000002 68#define SDHCI_DOING_WRITE 0x00000100 69#define SDHCI_DOING_READ 0x00000200 70#define SDHCI_SPACE_AVAILABLE 0x00000400 71#define SDHCI_DATA_AVAILABLE 0x00000800 72#define SDHCI_CARD_PRESENT 0x00010000 73#define SDHCI_CARD_PRES_SHIFT 16 74#define SDHCI_CD_STABLE 0x00020000 75#define SDHCI_CD_LVL 0x00040000 76#define SDHCI_CD_LVL_SHIFT 18 77#define SDHCI_WRITE_PROTECT 0x00080000 78#define SDHCI_DATA_LVL_MASK 0x00F00000 79#define SDHCI_DATA_LVL_SHIFT 20 80#define SDHCI_DATA_0_LVL_MASK 0x00100000 81#define SDHCI_CMD_LVL 0x01000000 82 83#define SDHCI_HOST_CONTROL 0x28 84#define SDHCI_CTRL_LED 0x01 85#define SDHCI_CTRL_4BITBUS 0x02 86#define SDHCI_CTRL_HISPD 0x04 87#define SDHCI_CTRL_DMA_MASK 0x18 88#define SDHCI_CTRL_SDMA 0x00 89#define SDHCI_CTRL_ADMA1 0x08 90#define SDHCI_CTRL_ADMA32 0x10 91#define SDHCI_CTRL_ADMA64 0x18 92#define SDHCI_CTRL_ADMA3 0x18 93#define SDHCI_CTRL_8BITBUS 0x20 94#define SDHCI_CTRL_CDTEST_INS 0x40 95#define SDHCI_CTRL_CDTEST_EN 0x80 96 97#define SDHCI_POWER_CONTROL 0x29 98#define SDHCI_POWER_ON 0x01 99#define SDHCI_POWER_180 0x0A 100#define SDHCI_POWER_300 0x0C 101#define SDHCI_POWER_330 0x0E 102 103#define SDHCI_BLOCK_GAP_CONTROL 0x2A 104 105#define SDHCI_WAKE_UP_CONTROL 0x2B 106#define SDHCI_WAKE_ON_INT 0x01 107#define SDHCI_WAKE_ON_INSERT 0x02 108#define SDHCI_WAKE_ON_REMOVE 0x04 109 110#define SDHCI_CLOCK_CONTROL 0x2C 111#define SDHCI_DIVIDER_SHIFT 8 112#define SDHCI_DIVIDER_HI_SHIFT 6 113#define SDHCI_DIV_MASK 0xFF 114#define SDHCI_DIV_MASK_LEN 8 115#define SDHCI_DIV_HI_MASK 0x300 116#define SDHCI_PROG_CLOCK_MODE 0x0020 117#define SDHCI_CLOCK_CARD_EN 0x0004 118#define SDHCI_CLOCK_PLL_EN 0x0008 119#define SDHCI_CLOCK_INT_STABLE 0x0002 120#define SDHCI_CLOCK_INT_EN 0x0001 121 122#define SDHCI_TIMEOUT_CONTROL 0x2E 123 124#define SDHCI_SOFTWARE_RESET 0x2F 125#define SDHCI_RESET_ALL 0x01 126#define SDHCI_RESET_CMD 0x02 127#define SDHCI_RESET_DATA 0x04 128 129#define SDHCI_INT_STATUS 0x30 130#define SDHCI_INT_ENABLE 0x34 131#define SDHCI_SIGNAL_ENABLE 0x38 132#define SDHCI_INT_RESPONSE 0x00000001 133#define SDHCI_INT_DATA_END 0x00000002 134#define SDHCI_INT_BLK_GAP 0x00000004 135#define SDHCI_INT_DMA_END 0x00000008 136#define SDHCI_INT_SPACE_AVAIL 0x00000010 137#define SDHCI_INT_DATA_AVAIL 0x00000020 138#define SDHCI_INT_CARD_INSERT 0x00000040 139#define SDHCI_INT_CARD_REMOVE 0x00000080 140#define SDHCI_INT_CARD_INT 0x00000100 141#define SDHCI_INT_RETUNE 0x00001000 142#define SDHCI_INT_CQE 0x00004000 143#define SDHCI_INT_ERROR 0x00008000 144#define SDHCI_INT_TIMEOUT 0x00010000 145#define SDHCI_INT_CRC 0x00020000 146#define SDHCI_INT_END_BIT 0x00040000 147#define SDHCI_INT_INDEX 0x00080000 148#define SDHCI_INT_DATA_TIMEOUT 0x00100000 149#define SDHCI_INT_DATA_CRC 0x00200000 150#define SDHCI_INT_DATA_END_BIT 0x00400000 151#define SDHCI_INT_BUS_POWER 0x00800000 152#define SDHCI_INT_AUTO_CMD_ERR 0x01000000 153#define SDHCI_INT_ADMA_ERROR 0x02000000 154 155#define SDHCI_INT_NORMAL_MASK 0x00007FFF 156#define SDHCI_INT_ERROR_MASK 0xFFFF8000 157 158#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \ 159 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX | \ 160 SDHCI_INT_AUTO_CMD_ERR) 161#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ 162 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ 163 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ 164 SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \ 165 SDHCI_INT_BLK_GAP) 166#define SDHCI_INT_ALL_MASK ((unsigned int)-1) 167 168#define SDHCI_CQE_INT_ERR_MASK ( \ 169 SDHCI_INT_ADMA_ERROR | SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | \ 170 SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | \ 171 SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT) 172 173#define SDHCI_CQE_INT_MASK (SDHCI_CQE_INT_ERR_MASK | SDHCI_INT_CQE) 174 175#define SDHCI_AUTO_CMD_STATUS 0x3C 176#define SDHCI_AUTO_CMD_TIMEOUT 0x00000002 177#define SDHCI_AUTO_CMD_CRC 0x00000004 178#define SDHCI_AUTO_CMD_END_BIT 0x00000008 179#define SDHCI_AUTO_CMD_INDEX 0x00000010 180 181#define SDHCI_HOST_CONTROL2 0x3E 182#define SDHCI_CTRL_UHS_MASK 0x0007 183#define SDHCI_CTRL_UHS_SDR12 0x0000 184#define SDHCI_CTRL_UHS_SDR25 0x0001 185#define SDHCI_CTRL_UHS_SDR50 0x0002 186#define SDHCI_CTRL_UHS_SDR104 0x0003 187#define SDHCI_CTRL_UHS_DDR50 0x0004 188#define SDHCI_CTRL_HS400 0x0005 /* Non-standard */ 189#define SDHCI_CTRL_VDD_180 0x0008 190#define SDHCI_CTRL_DRV_TYPE_MASK 0x0030 191#define SDHCI_CTRL_DRV_TYPE_B 0x0000 192#define SDHCI_CTRL_DRV_TYPE_A 0x0010 193#define SDHCI_CTRL_DRV_TYPE_C 0x0020 194#define SDHCI_CTRL_DRV_TYPE_D 0x0030 195#define SDHCI_CTRL_EXEC_TUNING 0x0040 196#define SDHCI_CTRL_TUNED_CLK 0x0080 197#define SDHCI_CMD23_ENABLE 0x0800 198#define SDHCI_CTRL_V4_MODE 0x1000 199#define SDHCI_CTRL_64BIT_ADDR 0x2000 200#define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000 201 202#define SDHCI_CAPABILITIES 0x40 203#define SDHCI_TIMEOUT_CLK_MASK GENMASK(5, 0) 204#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080 205#define SDHCI_CLOCK_BASE_MASK GENMASK(13, 8) 206#define SDHCI_CLOCK_V3_BASE_MASK GENMASK(15, 8) 207#define SDHCI_MAX_BLOCK_MASK 0x00030000 208#define SDHCI_MAX_BLOCK_SHIFT 16 209#define SDHCI_CAN_DO_8BIT 0x00040000 210#define SDHCI_CAN_DO_ADMA2 0x00080000 211#define SDHCI_CAN_DO_ADMA1 0x00100000 212#define SDHCI_CAN_DO_HISPD 0x00200000 213#define SDHCI_CAN_DO_SDMA 0x00400000 214#define SDHCI_CAN_DO_SUSPEND 0x00800000 215#define SDHCI_CAN_VDD_330 0x01000000 216#define SDHCI_CAN_VDD_300 0x02000000 217#define SDHCI_CAN_VDD_180 0x04000000 218#define SDHCI_CAN_64BIT_V4 0x08000000 219#define SDHCI_CAN_64BIT 0x10000000 220 221#define SDHCI_CAPABILITIES_1 0x44 222#define SDHCI_SUPPORT_SDR50 0x00000001 223#define SDHCI_SUPPORT_SDR104 0x00000002 224#define SDHCI_SUPPORT_DDR50 0x00000004 225#define SDHCI_DRIVER_TYPE_A 0x00000010 226#define SDHCI_DRIVER_TYPE_C 0x00000020 227#define SDHCI_DRIVER_TYPE_D 0x00000040 228#define SDHCI_RETUNING_TIMER_COUNT_MASK GENMASK(11, 8) 229#define SDHCI_USE_SDR50_TUNING 0x00002000 230#define SDHCI_RETUNING_MODE_MASK GENMASK(15, 14) 231#define SDHCI_CLOCK_MUL_MASK GENMASK(23, 16) 232#define SDHCI_CAN_DO_ADMA3 0x08000000 233#define SDHCI_SUPPORT_HS400 0x80000000 /* Non-standard */ 234 235#define SDHCI_MAX_CURRENT 0x48 236#define SDHCI_MAX_CURRENT_LIMIT GENMASK(7, 0) 237#define SDHCI_MAX_CURRENT_330_MASK GENMASK(7, 0) 238#define SDHCI_MAX_CURRENT_300_MASK GENMASK(15, 8) 239#define SDHCI_MAX_CURRENT_180_MASK GENMASK(23, 16) 240#define SDHCI_MAX_CURRENT_MULTIPLIER 4 241 242/* 4C-4F reserved for more max current */ 243 244#define SDHCI_SET_ACMD12_ERROR 0x50 245#define SDHCI_SET_INT_ERROR 0x52 246 247#define SDHCI_ADMA_ERROR 0x54 248 249/* 55-57 reserved */ 250 251#define SDHCI_ADMA_ADDRESS 0x58 252#define SDHCI_ADMA_ADDRESS_HI 0x5C 253 254/* 60-FB reserved */ 255 256#define SDHCI_PRESET_FOR_HIGH_SPEED 0x64 257#define SDHCI_PRESET_FOR_SDR12 0x66 258#define SDHCI_PRESET_FOR_SDR25 0x68 259#define SDHCI_PRESET_FOR_SDR50 0x6A 260#define SDHCI_PRESET_FOR_SDR104 0x6C 261#define SDHCI_PRESET_FOR_DDR50 0x6E 262#define SDHCI_PRESET_FOR_HS400 0x74 /* Non-standard */ 263#define SDHCI_PRESET_DRV_MASK GENMASK(15, 14) 264#define SDHCI_PRESET_CLKGEN_SEL BIT(10) 265#define SDHCI_PRESET_SDCLK_FREQ_MASK GENMASK(9, 0) 266 267#define SDHCI_SLOT_INT_STATUS 0xFC 268 269#define SDHCI_HOST_VERSION 0xFE 270#define SDHCI_VENDOR_VER_MASK 0xFF00 271#define SDHCI_VENDOR_VER_SHIFT 8 272#define SDHCI_SPEC_VER_MASK 0x00FF 273#define SDHCI_SPEC_VER_SHIFT 0 274#define SDHCI_SPEC_100 0 275#define SDHCI_SPEC_200 1 276#define SDHCI_SPEC_300 2 277#define SDHCI_SPEC_400 3 278#define SDHCI_SPEC_410 4 279#define SDHCI_SPEC_420 5 280 281/* 282 * End of controller registers. 283 */ 284 285#define SDHCI_MAX_DIV_SPEC_200 256 286#define SDHCI_MAX_DIV_SPEC_300 2046 287 288/* 289 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2. 290 */ 291#define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024) 292#define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12) 293 294/* ADMA2 32-bit DMA descriptor size */ 295#define SDHCI_ADMA2_32_DESC_SZ 8 296 297/* ADMA2 32-bit descriptor */ 298struct sdhci_adma2_32_desc { 299 __le16 cmd; 300 __le16 len; 301 __le32 addr; 302} __packed __aligned(4); 303 304/* ADMA2 data alignment */ 305#define SDHCI_ADMA2_ALIGN 4 306#define SDHCI_ADMA2_MASK (SDHCI_ADMA2_ALIGN - 1) 307 308/* 309 * ADMA2 descriptor alignment. Some controllers (e.g. Intel) require 8 byte 310 * alignment for the descriptor table even in 32-bit DMA mode. Memory 311 * allocation is at least 8 byte aligned anyway, so just stipulate 8 always. 312 */ 313#define SDHCI_ADMA2_DESC_ALIGN 8 314 315/* 316 * ADMA2 64-bit DMA descriptor size 317 * According to SD Host Controller spec v4.10, there are two kinds of 318 * descriptors for 64-bit addressing mode: 96-bit Descriptor and 128-bit 319 * Descriptor, if Host Version 4 Enable is set in the Host Control 2 320 * register, 128-bit Descriptor will be selected. 321 */ 322#define SDHCI_ADMA2_64_DESC_SZ(host) ((host)->v4_mode ? 16 : 12) 323 324/* 325 * ADMA2 64-bit descriptor. Note 12-byte descriptor can't always be 8-byte 326 * aligned. 327 */ 328struct sdhci_adma2_64_desc { 329 __le16 cmd; 330 __le16 len; 331 __le32 addr_lo; 332 __le32 addr_hi; 333} __packed __aligned(4); 334 335#define ADMA2_TRAN_VALID 0x21 336#define ADMA2_NOP_END_VALID 0x3 337#define ADMA2_END 0x2 338 339/* 340 * Maximum segments assuming a 512KiB maximum requisition size and a minimum 341 * 4KiB page size. Note this also allows enough for multiple descriptors in 342 * case of PAGE_SIZE >= 64KiB. 343 */ 344#define SDHCI_MAX_SEGS 128 345 346/* Allow for a a command request and a data request at the same time */ 347#define SDHCI_MAX_MRQS 2 348 349/* 350 * 48bit command and 136 bit response in 100KHz clock could take upto 2.48ms. 351 * However since the start time of the command, the time between 352 * command and response, and the time between response and start of data is 353 * not known, set the command transfer time to 10ms. 354 */ 355#define MMC_CMD_TRANSFER_TIME (10 * NSEC_PER_MSEC) /* max 10 ms */ 356 357enum sdhci_cookie { 358 COOKIE_UNMAPPED, 359 COOKIE_PRE_MAPPED, /* mapped by sdhci_pre_req() */ 360 COOKIE_MAPPED, /* mapped by sdhci_prepare_data() */ 361}; 362 363struct sdhci_host { 364 /* Data set by hardware interface driver */ 365 const char *hw_name; /* Hardware bus name */ 366 367 unsigned int quirks; /* Deviations from spec. */ 368 369/* Controller doesn't honor resets unless we touch the clock register */ 370#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) 371/* Controller has bad caps bits, but really supports DMA */ 372#define SDHCI_QUIRK_FORCE_DMA (1<<1) 373/* Controller doesn't like to be reset when there is no card inserted. */ 374#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) 375/* Controller doesn't like clearing the power reg before a change */ 376#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) 377/* Controller has flaky internal state so reset it on each ios change */ 378#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) 379/* Controller has an unusable DMA engine */ 380#define SDHCI_QUIRK_BROKEN_DMA (1<<5) 381/* Controller has an unusable ADMA engine */ 382#define SDHCI_QUIRK_BROKEN_ADMA (1<<6) 383/* Controller can only DMA from 32-bit aligned addresses */ 384#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7) 385/* Controller can only DMA chunk sizes that are a multiple of 32 bits */ 386#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8) 387/* Controller can only ADMA chunks that are a multiple of 32 bits */ 388#define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9) 389/* Controller needs to be reset after each request to stay stable */ 390#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10) 391/* Controller needs voltage and power writes to happen separately */ 392#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11) 393/* Controller provides an incorrect timeout value for transfers */ 394#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12) 395/* Controller has an issue with buffer bits for small transfers */ 396#define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13) 397/* Controller does not provide transfer-complete interrupt when not busy */ 398#define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14) 399/* Controller has unreliable card detection */ 400#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15) 401/* Controller reports inverted write-protect state */ 402#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16) 403/* Controller has unusable command queue engine */ 404#define SDHCI_QUIRK_BROKEN_CQE (1<<17) 405/* Controller does not like fast PIO transfers */ 406#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18) 407/* Controller does not have a LED */ 408#define SDHCI_QUIRK_NO_LED (1<<19) 409/* Controller has to be forced to use block size of 2048 bytes */ 410#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20) 411/* Controller cannot do multi-block transfers */ 412#define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21) 413/* Controller can only handle 1-bit data transfers */ 414#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22) 415/* Controller needs 10ms delay between applying power and clock */ 416#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23) 417/* Controller uses SDCLK instead of TMCLK for data timeouts */ 418#define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24) 419/* Controller reports wrong base clock capability */ 420#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25) 421/* Controller cannot support End Attribute in NOP ADMA descriptor */ 422#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26) 423/* Controller is missing device caps. Use caps provided by host */ 424#define SDHCI_QUIRK_MISSING_CAPS (1<<27) 425/* Controller uses Auto CMD12 command to stop the transfer */ 426#define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) 427/* Controller doesn't have HISPD bit field in HI-SPEED SD card */ 428#define SDHCI_QUIRK_NO_HISPD_BIT (1<<29) 429/* Controller treats ADMA descriptors with length 0000h incorrectly */ 430#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) 431/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ 432#define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) 433 434 unsigned int quirks2; /* More deviations from spec. */ 435 436#define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0) 437#define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) 438/* The system physically doesn't support 1.8v, even if the host does */ 439#define SDHCI_QUIRK2_NO_1_8_V (1<<2) 440#define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3) 441#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4) 442/* Controller has a non-standard host control register */ 443#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5) 444/* Controller does not support HS200 */ 445#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6) 446/* Controller does not support DDR50 */ 447#define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7) 448/* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */ 449#define SDHCI_QUIRK2_STOP_WITH_TC (1<<8) 450/* Controller does not support 64-bit DMA */ 451#define SDHCI_QUIRK2_BROKEN_64_BIT_DMA (1<<9) 452/* need clear transfer mode register before send cmd */ 453#define SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD (1<<10) 454/* Capability register bit-63 indicates HS400 support */ 455#define SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 (1<<11) 456/* forced tuned clock */ 457#define SDHCI_QUIRK2_TUNING_WORK_AROUND (1<<12) 458/* disable the block count for single block transactions */ 459#define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13) 460/* Controller broken with using ACMD23 */ 461#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14) 462/* Broken Clock divider zero in controller */ 463#define SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN (1<<15) 464/* Controller has CRC in 136 bit Command Response */ 465#define SDHCI_QUIRK2_RSP_136_HAS_CRC (1<<16) 466/* 467 * Disable HW timeout if the requested timeout is more than the maximum 468 * obtainable timeout. 469 */ 470#define SDHCI_QUIRK2_DISABLE_HW_TIMEOUT (1<<17) 471/* 472 * 32-bit block count may not support eMMC where upper bits of CMD23 are used 473 * for other purposes. Consequently we support 16-bit block count by default. 474 * Otherwise, SDHCI_QUIRK2_USE_32BIT_BLK_CNT can be selected to use 32-bit 475 * block count. 476 */ 477#define SDHCI_QUIRK2_USE_32BIT_BLK_CNT (1<<18) 478 479 int irq; /* Device IRQ */ 480 void __iomem *ioaddr; /* Mapped address */ 481 phys_addr_t mapbase; /* physical address base */ 482 char *bounce_buffer; /* For packing SDMA reads/writes */ 483 dma_addr_t bounce_addr; 484 unsigned int bounce_buffer_size; 485 486 const struct sdhci_ops *ops; /* Low level hw interface */ 487 488 /* Internal data */ 489 struct mmc_host *mmc; /* MMC structure */ 490 struct mmc_host_ops mmc_host_ops; /* MMC host ops */ 491 u64 dma_mask; /* custom DMA mask */ 492 493#if IS_ENABLED(CONFIG_LEDS_CLASS) 494 struct led_classdev led; /* LED control */ 495 char led_name[32]; 496#endif 497 498 spinlock_t lock; /* Mutex */ 499 500 int flags; /* Host attributes */ 501#define SDHCI_USE_SDMA (1<<0) /* Host is SDMA capable */ 502#define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */ 503#define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */ 504#define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */ 505#define SDHCI_SDR50_NEEDS_TUNING (1<<4) /* SDR50 needs tuning */ 506#define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */ 507#define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */ 508#define SDHCI_PV_ENABLED (1<<8) /* Preset value enabled */ 509#define SDHCI_USE_64_BIT_DMA (1<<12) /* Use 64-bit DMA */ 510#define SDHCI_HS400_TUNING (1<<13) /* Tuning for HS400 */ 511#define SDHCI_SIGNALING_330 (1<<14) /* Host is capable of 3.3V signaling */ 512#define SDHCI_SIGNALING_180 (1<<15) /* Host is capable of 1.8V signaling */ 513#define SDHCI_SIGNALING_120 (1<<16) /* Host is capable of 1.2V signaling */ 514 515 unsigned int version; /* SDHCI spec. version */ 516 517 unsigned int max_clk; /* Max possible freq (MHz) */ 518 unsigned int timeout_clk; /* Timeout freq (KHz) */ 519 unsigned int clk_mul; /* Clock Muliplier value */ 520 521 unsigned int clock; /* Current clock (MHz) */ 522 u8 pwr; /* Current voltage */ 523 u8 drv_type; /* Current UHS-I driver type */ 524 bool reinit_uhs; /* Force UHS-related re-initialization */ 525 526 bool runtime_suspended; /* Host is runtime suspended */ 527 bool bus_on; /* Bus power prevents runtime suspend */ 528 bool preset_enabled; /* Preset is enabled */ 529 bool pending_reset; /* Cmd/data reset is pending */ 530 bool irq_wake_enabled; /* IRQ wakeup is enabled */ 531 bool v4_mode; /* Host Version 4 Enable */ 532 bool use_external_dma; /* Host selects to use external DMA */ 533 bool always_defer_done; /* Always defer to complete requests */ 534 535 struct mmc_request *mrqs_done[SDHCI_MAX_MRQS]; /* Requests done */ 536 struct mmc_command *cmd; /* Current command */ 537 struct mmc_command *data_cmd; /* Current data command */ 538 struct mmc_command *deferred_cmd; /* Deferred command */ 539 struct mmc_data *data; /* Current data request */ 540 unsigned int data_early:1; /* Data finished before cmd */ 541 542 struct sg_mapping_iter sg_miter; /* SG state for PIO */ 543 unsigned int blocks; /* remaining PIO blocks */ 544 545 int sg_count; /* Mapped sg entries */ 546 int max_adma; /* Max. length in ADMA descriptor */ 547 548 void *adma_table; /* ADMA descriptor table */ 549 void *align_buffer; /* Bounce buffer */ 550 551 size_t adma_table_sz; /* ADMA descriptor table size */ 552 size_t align_buffer_sz; /* Bounce buffer size */ 553 554 dma_addr_t adma_addr; /* Mapped ADMA descr. table */ 555 dma_addr_t align_addr; /* Mapped bounce buffer */ 556 557 unsigned int desc_sz; /* ADMA current descriptor size */ 558 unsigned int alloc_desc_sz; /* ADMA descr. max size host supports */ 559 560 struct workqueue_struct *complete_wq; /* Request completion wq */ 561 struct work_struct complete_work; /* Request completion work */ 562 563 struct timer_list timer; /* Timer for timeouts */ 564 struct timer_list data_timer; /* Timer for data timeouts */ 565 566#if IS_ENABLED(CONFIG_MMC_SDHCI_EXTERNAL_DMA) 567 struct dma_chan *rx_chan; 568 struct dma_chan *tx_chan; 569#endif 570 571 u32 caps; /* CAPABILITY_0 */ 572 u32 caps1; /* CAPABILITY_1 */ 573 bool read_caps; /* Capability flags have been read */ 574 575 bool sdhci_core_to_disable_vqmmc; /* sdhci core can disable vqmmc */ 576 unsigned int ocr_avail_sdio; /* OCR bit masks */ 577 unsigned int ocr_avail_sd; 578 unsigned int ocr_avail_mmc; 579 u32 ocr_mask; /* available voltages */ 580 581 unsigned timing; /* Current timing */ 582 583 u32 thread_isr; 584 585 /* cached registers */ 586 u32 ier; 587 588 bool cqe_on; /* CQE is operating */ 589 u32 cqe_ier; /* CQE interrupt mask */ 590 u32 cqe_err_ier; /* CQE error interrupt mask */ 591 592 wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */ 593 unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */ 594 595 unsigned int tuning_count; /* Timer count for re-tuning */ 596 unsigned int tuning_mode; /* Re-tuning mode supported by host */ 597 unsigned int tuning_err; /* Error code for re-tuning */ 598#define SDHCI_TUNING_MODE_1 0 599#define SDHCI_TUNING_MODE_2 1 600#define SDHCI_TUNING_MODE_3 2 601 /* Delay (ms) between tuning commands */ 602 int tuning_delay; 603 int tuning_loop_count; 604 605 /* Host SDMA buffer boundary. */ 606 u32 sdma_boundary; 607 608 /* Host ADMA table count */ 609 u32 adma_table_cnt; 610 611 u64 data_timeout; 612 613 unsigned long private[] ____cacheline_aligned; 614}; 615 616struct sdhci_ops { 617#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS 618 u32 (*read_l)(struct sdhci_host *host, int reg); 619 u16 (*read_w)(struct sdhci_host *host, int reg); 620 u8 (*read_b)(struct sdhci_host *host, int reg); 621 void (*write_l)(struct sdhci_host *host, u32 val, int reg); 622 void (*write_w)(struct sdhci_host *host, u16 val, int reg); 623 void (*write_b)(struct sdhci_host *host, u8 val, int reg); 624#endif 625 626 void (*set_clock)(struct sdhci_host *host, unsigned int clock); 627 void (*set_power)(struct sdhci_host *host, unsigned char mode, 628 unsigned short vdd); 629 630 u32 (*irq)(struct sdhci_host *host, u32 intmask); 631 632 int (*set_dma_mask)(struct sdhci_host *host); 633 int (*enable_dma)(struct sdhci_host *host); 634 unsigned int (*get_max_clock)(struct sdhci_host *host); 635 unsigned int (*get_min_clock)(struct sdhci_host *host); 636 /* get_timeout_clock should return clk rate in unit of Hz */ 637 unsigned int (*get_timeout_clock)(struct sdhci_host *host); 638 unsigned int (*get_max_timeout_count)(struct sdhci_host *host); 639 void (*set_timeout)(struct sdhci_host *host, 640 struct mmc_command *cmd); 641 void (*set_bus_width)(struct sdhci_host *host, int width); 642 void (*platform_send_init_74_clocks)(struct sdhci_host *host, 643 u8 power_mode); 644 unsigned int (*get_ro)(struct sdhci_host *host); 645 void (*reset)(struct sdhci_host *host, u8 mask); 646 int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode); 647 void (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); 648 void (*hw_reset)(struct sdhci_host *host); 649 void (*adma_workaround)(struct sdhci_host *host, u32 intmask); 650 void (*card_event)(struct sdhci_host *host); 651 void (*voltage_switch)(struct sdhci_host *host); 652 void (*adma_write_desc)(struct sdhci_host *host, void **desc, 653 dma_addr_t addr, int len, unsigned int cmd); 654 void (*copy_to_bounce_buffer)(struct sdhci_host *host, 655 struct mmc_data *data, 656 unsigned int length); 657 void (*request_done)(struct sdhci_host *host, 658 struct mmc_request *mrq); 659 void (*dump_vendor_regs)(struct sdhci_host *host); 660}; 661 662#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS 663 664static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg) 665{ 666 if (unlikely(host->ops->write_l)) 667 host->ops->write_l(host, val, reg); 668 else 669 writel(val, host->ioaddr + reg); 670} 671 672static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg) 673{ 674 if (unlikely(host->ops->write_w)) 675 host->ops->write_w(host, val, reg); 676 else 677 writew(val, host->ioaddr + reg); 678} 679 680static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg) 681{ 682 if (unlikely(host->ops->write_b)) 683 host->ops->write_b(host, val, reg); 684 else 685 writeb(val, host->ioaddr + reg); 686} 687 688static inline u32 sdhci_readl(struct sdhci_host *host, int reg) 689{ 690 if (unlikely(host->ops->read_l)) 691 return host->ops->read_l(host, reg); 692 else 693 return readl(host->ioaddr + reg); 694} 695 696static inline u16 sdhci_readw(struct sdhci_host *host, int reg) 697{ 698 if (unlikely(host->ops->read_w)) 699 return host->ops->read_w(host, reg); 700 else 701 return readw(host->ioaddr + reg); 702} 703 704static inline u8 sdhci_readb(struct sdhci_host *host, int reg) 705{ 706 if (unlikely(host->ops->read_b)) 707 return host->ops->read_b(host, reg); 708 else 709 return readb(host->ioaddr + reg); 710} 711 712#else 713 714static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg) 715{ 716 writel(val, host->ioaddr + reg); 717} 718 719static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg) 720{ 721 writew(val, host->ioaddr + reg); 722} 723 724static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg) 725{ 726 writeb(val, host->ioaddr + reg); 727} 728 729static inline u32 sdhci_readl(struct sdhci_host *host, int reg) 730{ 731 return readl(host->ioaddr + reg); 732} 733 734static inline u16 sdhci_readw(struct sdhci_host *host, int reg) 735{ 736 return readw(host->ioaddr + reg); 737} 738 739static inline u8 sdhci_readb(struct sdhci_host *host, int reg) 740{ 741 return readb(host->ioaddr + reg); 742} 743 744#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */ 745 746struct sdhci_host *sdhci_alloc_host(struct device *dev, size_t priv_size); 747void sdhci_free_host(struct sdhci_host *host); 748 749static inline void *sdhci_priv(struct sdhci_host *host) 750{ 751 return host->private; 752} 753 754void sdhci_card_detect(struct sdhci_host *host); 755void __sdhci_read_caps(struct sdhci_host *host, const u16 *ver, 756 const u32 *caps, const u32 *caps1); 757int sdhci_setup_host(struct sdhci_host *host); 758void sdhci_cleanup_host(struct sdhci_host *host); 759int __sdhci_add_host(struct sdhci_host *host); 760int sdhci_add_host(struct sdhci_host *host); 761void sdhci_remove_host(struct sdhci_host *host, int dead); 762 763static inline void sdhci_read_caps(struct sdhci_host *host) 764{ 765 __sdhci_read_caps(host, NULL, NULL, NULL); 766} 767 768u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock, 769 unsigned int *actual_clock); 770void sdhci_set_clock(struct sdhci_host *host, unsigned int clock); 771void sdhci_enable_clk(struct sdhci_host *host, u16 clk); 772void sdhci_set_power(struct sdhci_host *host, unsigned char mode, 773 unsigned short vdd); 774void sdhci_set_power_and_bus_voltage(struct sdhci_host *host, 775 unsigned char mode, 776 unsigned short vdd); 777void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, 778 unsigned short vdd); 779void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq); 780int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq); 781void sdhci_set_bus_width(struct sdhci_host *host, int width); 782void sdhci_reset(struct sdhci_host *host, u8 mask); 783void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing); 784int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); 785void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); 786int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, 787 struct mmc_ios *ios); 788void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable); 789void sdhci_adma_write_desc(struct sdhci_host *host, void **desc, 790 dma_addr_t addr, int len, unsigned int cmd); 791 792#ifdef CONFIG_PM 793int sdhci_suspend_host(struct sdhci_host *host); 794int sdhci_resume_host(struct sdhci_host *host); 795int sdhci_runtime_suspend_host(struct sdhci_host *host); 796int sdhci_runtime_resume_host(struct sdhci_host *host, int soft_reset); 797#endif 798 799void sdhci_cqe_enable(struct mmc_host *mmc); 800void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery); 801bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error, 802 int *data_error); 803 804void sdhci_dumpregs(struct sdhci_host *host); 805void sdhci_enable_v4_mode(struct sdhci_host *host); 806 807void sdhci_start_tuning(struct sdhci_host *host); 808void sdhci_end_tuning(struct sdhci_host *host); 809void sdhci_reset_tuning(struct sdhci_host *host); 810void sdhci_send_tuning(struct sdhci_host *host, u32 opcode); 811void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode); 812void sdhci_switch_external_dma(struct sdhci_host *host, bool en); 813void sdhci_set_data_timeout_irq(struct sdhci_host *host, bool enable); 814void __sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd); 815 816#endif /* __SDHCI_HW_H */ 817