1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
5 * Header file for Host Controller registers and I/O accessors.
7 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
12 #include <linux/bits.h>
13 #include <linux/scatterlist.h>
14 #include <linux/compiler.h>
15 #include <linux/types.h>
17 #include <linux/leds.h>
18 #include <linux/interrupt.h>
20 #include <linux/mmc/host.h>
23 * Controller registers
26 #define SDHCI_DMA_ADDRESS 0x00
27 #define SDHCI_ARGUMENT2 SDHCI_DMA_ADDRESS
28 #define SDHCI_32BIT_BLK_CNT SDHCI_DMA_ADDRESS
30 #define SDHCI_BLOCK_SIZE 0x04
31 #define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
33 #define SDHCI_BLOCK_COUNT 0x06
35 #define SDHCI_ARGUMENT 0x08
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
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
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
58 #define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
59 #define SDHCI_GET_CMD(c) ((c>>8) & 0x3f)
61 #define SDHCI_RESPONSE 0x10
63 #define SDHCI_BUFFER 0x20
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
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
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
103 #define SDHCI_BLOCK_GAP_CONTROL 0x2A
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
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
122 #define SDHCI_TIMEOUT_CONTROL 0x2E
124 #define SDHCI_SOFTWARE_RESET 0x2F
125 #define SDHCI_RESET_ALL 0x01
126 #define SDHCI_RESET_CMD 0x02
127 #define SDHCI_RESET_DATA 0x04
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
155 #define SDHCI_INT_NORMAL_MASK 0x00007FFF
156 #define SDHCI_INT_ERROR_MASK 0xFFFF8000
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 | \
166 #define SDHCI_INT_ALL_MASK ((unsigned int)-1)
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)
173 #define SDHCI_CQE_INT_MASK (SDHCI_CQE_INT_ERR_MASK | SDHCI_INT_CQE)
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
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
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
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 */
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
242 /* 4C-4F reserved for more max current */
244 #define SDHCI_SET_ACMD12_ERROR 0x50
245 #define SDHCI_SET_INT_ERROR 0x52
247 #define SDHCI_ADMA_ERROR 0x54
251 #define SDHCI_ADMA_ADDRESS 0x58
252 #define SDHCI_ADMA_ADDRESS_HI 0x5C
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)
267 #define SDHCI_SLOT_INT_STATUS 0xFC
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
282 * End of controller registers.
285 #define SDHCI_MAX_DIV_SPEC_200 256
286 #define SDHCI_MAX_DIV_SPEC_300 2046
289 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
291 #define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
292 #define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12)
294 /* ADMA2 32-bit DMA descriptor size */
295 #define SDHCI_ADMA2_32_DESC_SZ 8
297 /* ADMA2 32-bit descriptor */
298 struct sdhci_adma2_32_desc {
302 } __packed __aligned(4);
304 /* ADMA2 data alignment */
305 #define SDHCI_ADMA2_ALIGN 4
306 #define SDHCI_ADMA2_MASK (SDHCI_ADMA2_ALIGN - 1)
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.
313 #define SDHCI_ADMA2_DESC_ALIGN 8
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.
322 #define SDHCI_ADMA2_64_DESC_SZ(host) ((host)->v4_mode ? 16 : 12)
325 * ADMA2 64-bit descriptor. Note 12-byte descriptor can't always be 8-byte
328 struct sdhci_adma2_64_desc {
333 } __packed __aligned(4);
335 #define ADMA2_TRAN_VALID 0x21
336 #define ADMA2_NOP_END_VALID 0x3
337 #define ADMA2_END 0x2
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.
344 #define SDHCI_MAX_SEGS 128
346 /* Allow for a a command request and a data request at the same time */
347 #define SDHCI_MAX_MRQS 2
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.
355 #define MMC_CMD_TRANSFER_TIME (10 * NSEC_PER_MSEC) /* max 10 ms */
359 COOKIE_PRE_MAPPED, /* mapped by sdhci_pre_req() */
360 COOKIE_MAPPED, /* mapped by sdhci_prepare_data() */
364 /* Data set by hardware interface driver */
365 const char *hw_name; /* Hardware bus name */
367 unsigned int quirks; /* Deviations from spec. */
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)
434 unsigned int quirks2; /* More deviations from spec. */
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)
467 * Disable HW timeout if the requested timeout is more than the maximum
468 * obtainable timeout.
470 #define SDHCI_QUIRK2_DISABLE_HW_TIMEOUT (1<<17)
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
477 #define SDHCI_QUIRK2_USE_32BIT_BLK_CNT (1<<18)
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;
486 const struct sdhci_ops *ops; /* Low level hw interface */
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 */
493 #if IS_ENABLED(CONFIG_LEDS_CLASS)
494 struct led_classdev led; /* LED control */
498 spinlock_t lock; /* Mutex */
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 */
515 unsigned int version; /* SDHCI spec. version */
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 */
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 */
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 */
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 */
542 struct sg_mapping_iter sg_miter; /* SG state for PIO */
543 unsigned int blocks; /* remaining PIO blocks */
545 int sg_count; /* Mapped sg entries */
546 int max_adma; /* Max. length in ADMA descriptor */
548 void *adma_table; /* ADMA descriptor table */
549 void *align_buffer; /* Bounce buffer */
551 size_t adma_table_sz; /* ADMA descriptor table size */
552 size_t align_buffer_sz; /* Bounce buffer size */
554 dma_addr_t adma_addr; /* Mapped ADMA descr. table */
555 dma_addr_t align_addr; /* Mapped bounce buffer */
557 unsigned int desc_sz; /* ADMA current descriptor size */
558 unsigned int alloc_desc_sz; /* ADMA descr. max size host supports */
560 struct workqueue_struct *complete_wq; /* Request completion wq */
561 struct work_struct complete_work; /* Request completion work */
563 struct timer_list timer; /* Timer for timeouts */
564 struct timer_list data_timer; /* Timer for data timeouts */
566 #if IS_ENABLED(CONFIG_MMC_SDHCI_EXTERNAL_DMA)
567 struct dma_chan *rx_chan;
568 struct dma_chan *tx_chan;
571 u32 caps; /* CAPABILITY_0 */
572 u32 caps1; /* CAPABILITY_1 */
573 bool read_caps; /* Capability flags have been read */
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 */
581 unsigned timing; /* Current timing */
585 /* cached registers */
588 bool cqe_on; /* CQE is operating */
589 u32 cqe_ier; /* CQE interrupt mask */
590 u32 cqe_err_ier; /* CQE error interrupt mask */
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 */
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 */
603 int tuning_loop_count;
605 /* Host SDMA buffer boundary. */
608 /* Host ADMA table count */
613 unsigned long private[] ____cacheline_aligned;
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);
626 void (*set_clock)(struct sdhci_host *host, unsigned int clock);
627 void (*set_power)(struct sdhci_host *host, unsigned char mode,
630 u32 (*irq)(struct sdhci_host *host, u32 intmask);
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,
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);
662 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
664 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
666 if (unlikely(host->ops->write_l))
667 host->ops->write_l(host, val, reg);
669 writel(val, host->ioaddr + reg);
672 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
674 if (unlikely(host->ops->write_w))
675 host->ops->write_w(host, val, reg);
677 writew(val, host->ioaddr + reg);
680 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
682 if (unlikely(host->ops->write_b))
683 host->ops->write_b(host, val, reg);
685 writeb(val, host->ioaddr + reg);
688 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
690 if (unlikely(host->ops->read_l))
691 return host->ops->read_l(host, reg);
693 return readl(host->ioaddr + reg);
696 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
698 if (unlikely(host->ops->read_w))
699 return host->ops->read_w(host, reg);
701 return readw(host->ioaddr + reg);
704 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
706 if (unlikely(host->ops->read_b))
707 return host->ops->read_b(host, reg);
709 return readb(host->ioaddr + reg);
714 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
716 writel(val, host->ioaddr + reg);
719 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
721 writew(val, host->ioaddr + reg);
724 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
726 writeb(val, host->ioaddr + reg);
729 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
731 return readl(host->ioaddr + reg);
734 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
736 return readw(host->ioaddr + reg);
739 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
741 return readb(host->ioaddr + reg);
744 #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
746 struct sdhci_host *sdhci_alloc_host(struct device *dev, size_t priv_size);
747 void sdhci_free_host(struct sdhci_host *host);
749 static inline void *sdhci_priv(struct sdhci_host *host)
751 return host->private;
754 void sdhci_card_detect(struct sdhci_host *host);
755 void __sdhci_read_caps(struct sdhci_host *host, const u16 *ver,
756 const u32 *caps, const u32 *caps1);
757 int sdhci_setup_host(struct sdhci_host *host);
758 void sdhci_cleanup_host(struct sdhci_host *host);
759 int __sdhci_add_host(struct sdhci_host *host);
760 int sdhci_add_host(struct sdhci_host *host);
761 void sdhci_remove_host(struct sdhci_host *host, int dead);
763 static inline void sdhci_read_caps(struct sdhci_host *host)
765 __sdhci_read_caps(host, NULL, NULL, NULL);
768 u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
769 unsigned int *actual_clock);
770 void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
771 void sdhci_enable_clk(struct sdhci_host *host, u16 clk);
772 void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
774 void sdhci_set_power_and_bus_voltage(struct sdhci_host *host,
777 void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
779 void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq);
780 int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq);
781 void sdhci_set_bus_width(struct sdhci_host *host, int width);
782 void sdhci_reset(struct sdhci_host *host, u8 mask);
783 void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
784 int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
785 void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
786 int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
787 struct mmc_ios *ios);
788 void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable);
789 void sdhci_adma_write_desc(struct sdhci_host *host, void **desc,
790 dma_addr_t addr, int len, unsigned int cmd);
793 int sdhci_suspend_host(struct sdhci_host *host);
794 int sdhci_resume_host(struct sdhci_host *host);
795 int sdhci_runtime_suspend_host(struct sdhci_host *host);
796 int sdhci_runtime_resume_host(struct sdhci_host *host, int soft_reset);
799 void sdhci_cqe_enable(struct mmc_host *mmc);
800 void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery);
801 bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
804 void sdhci_dumpregs(struct sdhci_host *host);
805 void sdhci_enable_v4_mode(struct sdhci_host *host);
807 void sdhci_start_tuning(struct sdhci_host *host);
808 void sdhci_end_tuning(struct sdhci_host *host);
809 void sdhci_reset_tuning(struct sdhci_host *host);
810 void sdhci_send_tuning(struct sdhci_host *host, u32 opcode);
811 void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode);
812 void sdhci_switch_external_dma(struct sdhci_host *host, bool en);
813 void sdhci_set_data_timeout_irq(struct sdhci_host *host, bool enable);
814 void __sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd);
816 #endif /* __SDHCI_HW_H */