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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / mmc / host / sdhci.h
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/host.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 #define SDHCI_DATA_0_LVL_MASK 0x00100000
76
77 #define SDHCI_HOST_CONTROL 0x28
78 #define SDHCI_CTRL_LED 0x01
79 #define SDHCI_CTRL_4BITBUS 0x02
80 #define SDHCI_CTRL_HISPD 0x04
81 #define SDHCI_CTRL_DMA_MASK 0x18
82 #define SDHCI_CTRL_SDMA 0x00
83 #define SDHCI_CTRL_ADMA1 0x08
84 #define SDHCI_CTRL_ADMA32 0x10
85 #define SDHCI_CTRL_ADMA64 0x18
86 #define SDHCI_CTRL_8BITBUS 0x20
87
88 #define SDHCI_POWER_CONTROL 0x29
89 #define SDHCI_POWER_ON 0x01
90 #define SDHCI_POWER_180 0x0A
91 #define SDHCI_POWER_300 0x0C
92 #define SDHCI_POWER_330 0x0E
93
94 #define SDHCI_BLOCK_GAP_CONTROL 0x2A
95
96 #define SDHCI_WAKE_UP_CONTROL 0x2B
97 #define SDHCI_WAKE_ON_INT 0x01
98 #define SDHCI_WAKE_ON_INSERT 0x02
99 #define SDHCI_WAKE_ON_REMOVE 0x04
100
101 #define SDHCI_CLOCK_CONTROL 0x2C
102 #define SDHCI_DIVIDER_SHIFT 8
103 #define SDHCI_DIVIDER_HI_SHIFT 6
104 #define SDHCI_DIV_MASK 0xFF
105 #define SDHCI_DIV_MASK_LEN 8
106 #define SDHCI_DIV_HI_MASK 0x300
107 #define SDHCI_PROG_CLOCK_MODE 0x0020
108 #define SDHCI_CLOCK_CARD_EN 0x0004
109 #define SDHCI_CLOCK_INT_STABLE 0x0002
110 #define SDHCI_CLOCK_INT_EN 0x0001
111
112 #define SDHCI_TIMEOUT_CONTROL 0x2E
113
114 #define SDHCI_SOFTWARE_RESET 0x2F
115 #define SDHCI_RESET_ALL 0x01
116 #define SDHCI_RESET_CMD 0x02
117 #define SDHCI_RESET_DATA 0x04
118
119 #define SDHCI_INT_STATUS 0x30
120 #define SDHCI_INT_ENABLE 0x34
121 #define SDHCI_SIGNAL_ENABLE 0x38
122 #define SDHCI_INT_RESPONSE 0x00000001
123 #define SDHCI_INT_DATA_END 0x00000002
124 #define SDHCI_INT_BLK_GAP 0x00000004
125 #define SDHCI_INT_DMA_END 0x00000008
126 #define SDHCI_INT_SPACE_AVAIL 0x00000010
127 #define SDHCI_INT_DATA_AVAIL 0x00000020
128 #define SDHCI_INT_CARD_INSERT 0x00000040
129 #define SDHCI_INT_CARD_REMOVE 0x00000080
130 #define SDHCI_INT_CARD_INT 0x00000100
131 #define SDHCI_INT_ERROR 0x00008000
132 #define SDHCI_INT_TIMEOUT 0x00010000
133 #define SDHCI_INT_CRC 0x00020000
134 #define SDHCI_INT_END_BIT 0x00040000
135 #define SDHCI_INT_INDEX 0x00080000
136 #define SDHCI_INT_DATA_TIMEOUT 0x00100000
137 #define SDHCI_INT_DATA_CRC 0x00200000
138 #define SDHCI_INT_DATA_END_BIT 0x00400000
139 #define SDHCI_INT_BUS_POWER 0x00800000
140 #define SDHCI_INT_ACMD12ERR 0x01000000
141 #define SDHCI_INT_ADMA_ERROR 0x02000000
142
143 #define SDHCI_INT_NORMAL_MASK 0x00007FFF
144 #define SDHCI_INT_ERROR_MASK 0xFFFF8000
145
146 #define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
147 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
148 #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
149 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
150 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
151 SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \
152 SDHCI_INT_BLK_GAP)
153 #define SDHCI_INT_ALL_MASK ((unsigned int)-1)
154
155 #define SDHCI_ACMD12_ERR 0x3C
156
157 #define SDHCI_HOST_CONTROL2 0x3E
158 #define SDHCI_CTRL_UHS_MASK 0x0007
159 #define SDHCI_CTRL_UHS_SDR12 0x0000
160 #define SDHCI_CTRL_UHS_SDR25 0x0001
161 #define SDHCI_CTRL_UHS_SDR50 0x0002
162 #define SDHCI_CTRL_UHS_SDR104 0x0003
163 #define SDHCI_CTRL_UHS_DDR50 0x0004
164 #define SDHCI_CTRL_HS400 0x0005 /* Non-standard */
165 #define SDHCI_CTRL_VDD_180 0x0008
166 #define SDHCI_CTRL_DRV_TYPE_MASK 0x0030
167 #define SDHCI_CTRL_DRV_TYPE_B 0x0000
168 #define SDHCI_CTRL_DRV_TYPE_A 0x0010
169 #define SDHCI_CTRL_DRV_TYPE_C 0x0020
170 #define SDHCI_CTRL_DRV_TYPE_D 0x0030
171 #define SDHCI_CTRL_EXEC_TUNING 0x0040
172 #define SDHCI_CTRL_TUNED_CLK 0x0080
173 #define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000
174
175 #define SDHCI_CAPABILITIES 0x40
176 #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
177 #define SDHCI_TIMEOUT_CLK_SHIFT 0
178 #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
179 #define SDHCI_CLOCK_BASE_MASK 0x00003F00
180 #define SDHCI_CLOCK_V3_BASE_MASK 0x0000FF00
181 #define SDHCI_CLOCK_BASE_SHIFT 8
182 #define SDHCI_MAX_BLOCK_MASK 0x00030000
183 #define SDHCI_MAX_BLOCK_SHIFT 16
184 #define SDHCI_CAN_DO_8BIT 0x00040000
185 #define SDHCI_CAN_DO_ADMA2 0x00080000
186 #define SDHCI_CAN_DO_ADMA1 0x00100000
187 #define SDHCI_CAN_DO_HISPD 0x00200000
188 #define SDHCI_CAN_DO_SDMA 0x00400000
189 #define SDHCI_CAN_VDD_330 0x01000000
190 #define SDHCI_CAN_VDD_300 0x02000000
191 #define SDHCI_CAN_VDD_180 0x04000000
192 #define SDHCI_CAN_64BIT 0x10000000
193
194 #define SDHCI_SUPPORT_SDR50 0x00000001
195 #define SDHCI_SUPPORT_SDR104 0x00000002
196 #define SDHCI_SUPPORT_DDR50 0x00000004
197 #define SDHCI_DRIVER_TYPE_A 0x00000010
198 #define SDHCI_DRIVER_TYPE_C 0x00000020
199 #define SDHCI_DRIVER_TYPE_D 0x00000040
200 #define SDHCI_RETUNING_TIMER_COUNT_MASK 0x00000F00
201 #define SDHCI_RETUNING_TIMER_COUNT_SHIFT 8
202 #define SDHCI_USE_SDR50_TUNING 0x00002000
203 #define SDHCI_RETUNING_MODE_MASK 0x0000C000
204 #define SDHCI_RETUNING_MODE_SHIFT 14
205 #define SDHCI_CLOCK_MUL_MASK 0x00FF0000
206 #define SDHCI_CLOCK_MUL_SHIFT 16
207 #define SDHCI_SUPPORT_HS400 0x80000000 /* Non-standard */
208
209 #define SDHCI_CAPABILITIES_1 0x44
210
211 #define SDHCI_MAX_CURRENT 0x48
212 #define SDHCI_MAX_CURRENT_LIMIT 0xFF
213 #define SDHCI_MAX_CURRENT_330_MASK 0x0000FF
214 #define SDHCI_MAX_CURRENT_330_SHIFT 0
215 #define SDHCI_MAX_CURRENT_300_MASK 0x00FF00
216 #define SDHCI_MAX_CURRENT_300_SHIFT 8
217 #define SDHCI_MAX_CURRENT_180_MASK 0xFF0000
218 #define SDHCI_MAX_CURRENT_180_SHIFT 16
219 #define SDHCI_MAX_CURRENT_MULTIPLIER 4
220
221 /* 4C-4F reserved for more max current */
222
223 #define SDHCI_SET_ACMD12_ERROR 0x50
224 #define SDHCI_SET_INT_ERROR 0x52
225
226 #define SDHCI_ADMA_ERROR 0x54
227
228 /* 55-57 reserved */
229
230 #define SDHCI_ADMA_ADDRESS 0x58
231 #define SDHCI_ADMA_ADDRESS_HI 0x5C
232
233 /* 60-FB reserved */
234
235 #define SDHCI_PRESET_FOR_SDR12 0x66
236 #define SDHCI_PRESET_FOR_SDR25 0x68
237 #define SDHCI_PRESET_FOR_SDR50 0x6A
238 #define SDHCI_PRESET_FOR_SDR104 0x6C
239 #define SDHCI_PRESET_FOR_DDR50 0x6E
240 #define SDHCI_PRESET_FOR_HS400 0x74 /* Non-standard */
241 #define SDHCI_PRESET_DRV_MASK 0xC000
242 #define SDHCI_PRESET_DRV_SHIFT 14
243 #define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400
244 #define SDHCI_PRESET_CLKGEN_SEL_SHIFT 10
245 #define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF
246 #define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0
247
248 #define SDHCI_SLOT_INT_STATUS 0xFC
249
250 #define SDHCI_HOST_VERSION 0xFE
251 #define SDHCI_VENDOR_VER_MASK 0xFF00
252 #define SDHCI_VENDOR_VER_SHIFT 8
253 #define SDHCI_SPEC_VER_MASK 0x00FF
254 #define SDHCI_SPEC_VER_SHIFT 0
255 #define SDHCI_SPEC_100 0
256 #define SDHCI_SPEC_200 1
257 #define SDHCI_SPEC_300 2
258
259 /*
260 * End of controller registers.
261 */
262
263 #define SDHCI_MAX_DIV_SPEC_200 256
264 #define SDHCI_MAX_DIV_SPEC_300 2046
265
266 /*
267 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
268 */
269 #define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
270 #define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12)
271
272 /* ADMA2 32-bit DMA descriptor size */
273 #define SDHCI_ADMA2_32_DESC_SZ 8
274
275 /* ADMA2 32-bit descriptor */
276 struct sdhci_adma2_32_desc {
277 __le16 cmd;
278 __le16 len;
279 __le32 addr;
280 } __packed __aligned(4);
281
282 /* ADMA2 data alignment */
283 #define SDHCI_ADMA2_ALIGN 4
284 #define SDHCI_ADMA2_MASK (SDHCI_ADMA2_ALIGN - 1)
285
286 /*
287 * ADMA2 descriptor alignment. Some controllers (e.g. Intel) require 8 byte
288 * alignment for the descriptor table even in 32-bit DMA mode. Memory
289 * allocation is at least 8 byte aligned anyway, so just stipulate 8 always.
290 */
291 #define SDHCI_ADMA2_DESC_ALIGN 8
292
293 /* ADMA2 64-bit DMA descriptor size */
294 #define SDHCI_ADMA2_64_DESC_SZ 12
295
296 /*
297 * ADMA2 64-bit descriptor. Note 12-byte descriptor can't always be 8-byte
298 * aligned.
299 */
300 struct sdhci_adma2_64_desc {
301 __le16 cmd;
302 __le16 len;
303 __le32 addr_lo;
304 __le32 addr_hi;
305 } __packed __aligned(4);
306
307 #define ADMA2_TRAN_VALID 0x21
308 #define ADMA2_NOP_END_VALID 0x3
309 #define ADMA2_END 0x2
310
311 /*
312 * Maximum segments assuming a 512KiB maximum requisition size and a minimum
313 * 4KiB page size.
314 */
315 #define SDHCI_MAX_SEGS 128
316
317 enum sdhci_cookie {
318 COOKIE_UNMAPPED,
319 COOKIE_PRE_MAPPED, /* mapped by sdhci_pre_req() */
320 COOKIE_MAPPED, /* mapped by sdhci_prepare_data() */
321 };
322
323 struct sdhci_host {
324 /* Data set by hardware interface driver */
325 const char *hw_name; /* Hardware bus name */
326
327 unsigned int quirks; /* Deviations from spec. */
328
329 /* Controller doesn't honor resets unless we touch the clock register */
330 #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
331 /* Controller has bad caps bits, but really supports DMA */
332 #define SDHCI_QUIRK_FORCE_DMA (1<<1)
333 /* Controller doesn't like to be reset when there is no card inserted. */
334 #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2)
335 /* Controller doesn't like clearing the power reg before a change */
336 #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3)
337 /* Controller has flaky internal state so reset it on each ios change */
338 #define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4)
339 /* Controller has an unusable DMA engine */
340 #define SDHCI_QUIRK_BROKEN_DMA (1<<5)
341 /* Controller has an unusable ADMA engine */
342 #define SDHCI_QUIRK_BROKEN_ADMA (1<<6)
343 /* Controller can only DMA from 32-bit aligned addresses */
344 #define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7)
345 /* Controller can only DMA chunk sizes that are a multiple of 32 bits */
346 #define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8)
347 /* Controller can only ADMA chunks that are a multiple of 32 bits */
348 #define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9)
349 /* Controller needs to be reset after each request to stay stable */
350 #define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10)
351 /* Controller needs voltage and power writes to happen separately */
352 #define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11)
353 /* Controller provides an incorrect timeout value for transfers */
354 #define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12)
355 /* Controller has an issue with buffer bits for small transfers */
356 #define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13)
357 /* Controller does not provide transfer-complete interrupt when not busy */
358 #define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14)
359 /* Controller has unreliable card detection */
360 #define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
361 /* Controller reports inverted write-protect state */
362 #define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
363 /* Controller does not like fast PIO transfers */
364 #define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
365 /* Controller has to be forced to use block size of 2048 bytes */
366 #define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20)
367 /* Controller cannot do multi-block transfers */
368 #define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21)
369 /* Controller can only handle 1-bit data transfers */
370 #define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22)
371 /* Controller needs 10ms delay between applying power and clock */
372 #define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23)
373 /* Controller uses SDCLK instead of TMCLK for data timeouts */
374 #define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24)
375 /* Controller reports wrong base clock capability */
376 #define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25)
377 /* Controller cannot support End Attribute in NOP ADMA descriptor */
378 #define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26)
379 /* Controller is missing device caps. Use caps provided by host */
380 #define SDHCI_QUIRK_MISSING_CAPS (1<<27)
381 /* Controller uses Auto CMD12 command to stop the transfer */
382 #define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28)
383 /* Controller doesn't have HISPD bit field in HI-SPEED SD card */
384 #define SDHCI_QUIRK_NO_HISPD_BIT (1<<29)
385 /* Controller treats ADMA descriptors with length 0000h incorrectly */
386 #define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30)
387 /* The read-only detection via SDHCI_PRESENT_STATE register is unstable */
388 #define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31)
389
390 unsigned int quirks2; /* More deviations from spec. */
391
392 #define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0)
393 #define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1)
394 /* The system physically doesn't support 1.8v, even if the host does */
395 #define SDHCI_QUIRK2_NO_1_8_V (1<<2)
396 #define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3)
397 #define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4)
398 /* Controller has a non-standard host control register */
399 #define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5)
400 /* Controller does not support HS200 */
401 #define SDHCI_QUIRK2_BROKEN_HS200 (1<<6)
402 /* Controller does not support DDR50 */
403 #define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7)
404 /* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */
405 #define SDHCI_QUIRK2_STOP_WITH_TC (1<<8)
406 /* Controller does not support 64-bit DMA */
407 #define SDHCI_QUIRK2_BROKEN_64_BIT_DMA (1<<9)
408 /* need clear transfer mode register before send cmd */
409 #define SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD (1<<10)
410 /* Capability register bit-63 indicates HS400 support */
411 #define SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 (1<<11)
412 /* forced tuned clock */
413 #define SDHCI_QUIRK2_TUNING_WORK_AROUND (1<<12)
414 /* disable the block count for single block transactions */
415 #define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13)
416 /* Controller broken with using ACMD23 */
417 #define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14)
418 /* Broken Clock divider zero in controller */
419 #define SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN (1<<15)
420 /*
421 * When internal clock is disabled, a delay is needed before modifying the
422 * SD clock frequency or enabling back the internal clock.
423 */
424 #define SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST (1<<16)
425
426 int irq; /* Device IRQ */
427 void __iomem *ioaddr; /* Mapped address */
428
429 const struct sdhci_ops *ops; /* Low level hw interface */
430
431 /* Internal data */
432 struct mmc_host *mmc; /* MMC structure */
433 struct mmc_host_ops mmc_host_ops; /* MMC host ops */
434 u64 dma_mask; /* custom DMA mask */
435
436 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
437 struct led_classdev led; /* LED control */
438 char led_name[32];
439 #endif
440
441 spinlock_t lock; /* Mutex */
442
443 int flags; /* Host attributes */
444 #define SDHCI_USE_SDMA (1<<0) /* Host is SDMA capable */
445 #define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */
446 #define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */
447 #define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */
448 #define SDHCI_SDR50_NEEDS_TUNING (1<<4) /* SDR50 needs tuning */
449 #define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */
450 #define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */
451 #define SDHCI_PV_ENABLED (1<<8) /* Preset value enabled */
452 #define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO irq enabled */
453 #define SDHCI_SDR104_NEEDS_TUNING (1<<10) /* SDR104/HS200 needs tuning */
454 #define SDHCI_USE_64_BIT_DMA (1<<12) /* Use 64-bit DMA */
455 #define SDHCI_HS400_TUNING (1<<13) /* Tuning for HS400 */
456
457 unsigned int version; /* SDHCI spec. version */
458
459 unsigned int max_clk; /* Max possible freq (MHz) */
460 unsigned int timeout_clk; /* Timeout freq (KHz) */
461 unsigned int clk_mul; /* Clock Muliplier value */
462
463 unsigned int clock; /* Current clock (MHz) */
464 u8 pwr; /* Current voltage */
465
466 bool runtime_suspended; /* Host is runtime suspended */
467 bool bus_on; /* Bus power prevents runtime suspend */
468 bool preset_enabled; /* Preset is enabled */
469
470 struct mmc_request *mrq; /* Current request */
471 struct mmc_command *cmd; /* Current command */
472 struct mmc_data *data; /* Current data request */
473 unsigned int data_early:1; /* Data finished before cmd */
474 unsigned int busy_handle:1; /* Handling the order of Busy-end */
475
476 struct sg_mapping_iter sg_miter; /* SG state for PIO */
477 unsigned int blocks; /* remaining PIO blocks */
478
479 int sg_count; /* Mapped sg entries */
480
481 void *adma_table; /* ADMA descriptor table */
482 void *align_buffer; /* Bounce buffer */
483
484 size_t adma_table_sz; /* ADMA descriptor table size */
485 size_t align_buffer_sz; /* Bounce buffer size */
486
487 dma_addr_t adma_addr; /* Mapped ADMA descr. table */
488 dma_addr_t align_addr; /* Mapped bounce buffer */
489
490 unsigned int desc_sz; /* ADMA descriptor size */
491
492 struct tasklet_struct finish_tasklet; /* Tasklet structures */
493
494 struct timer_list timer; /* Timer for timeouts */
495
496 u32 caps; /* Alternative CAPABILITY_0 */
497 u32 caps1; /* Alternative CAPABILITY_1 */
498
499 unsigned int ocr_avail_sdio; /* OCR bit masks */
500 unsigned int ocr_avail_sd;
501 unsigned int ocr_avail_mmc;
502 u32 ocr_mask; /* available voltages */
503
504 unsigned timing; /* Current timing */
505
506 u32 thread_isr;
507
508 /* cached registers */
509 u32 ier;
510
511 wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */
512 unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */
513
514 unsigned int tuning_count; /* Timer count for re-tuning */
515 unsigned int tuning_mode; /* Re-tuning mode supported by host */
516 #define SDHCI_TUNING_MODE_1 0
517
518 unsigned long private[0] ____cacheline_aligned;
519 };
520
521 struct sdhci_ops {
522 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
523 u32 (*read_l)(struct sdhci_host *host, int reg);
524 u16 (*read_w)(struct sdhci_host *host, int reg);
525 u8 (*read_b)(struct sdhci_host *host, int reg);
526 void (*write_l)(struct sdhci_host *host, u32 val, int reg);
527 void (*write_w)(struct sdhci_host *host, u16 val, int reg);
528 void (*write_b)(struct sdhci_host *host, u8 val, int reg);
529 #endif
530
531 void (*set_clock)(struct sdhci_host *host, unsigned int clock);
532 void (*set_power)(struct sdhci_host *host, unsigned char mode,
533 unsigned short vdd);
534
535 int (*enable_dma)(struct sdhci_host *host);
536 unsigned int (*get_max_clock)(struct sdhci_host *host);
537 unsigned int (*get_min_clock)(struct sdhci_host *host);
538 unsigned int (*get_timeout_clock)(struct sdhci_host *host);
539 unsigned int (*get_max_timeout_count)(struct sdhci_host *host);
540 void (*set_timeout)(struct sdhci_host *host,
541 struct mmc_command *cmd);
542 void (*set_bus_width)(struct sdhci_host *host, int width);
543 void (*platform_send_init_74_clocks)(struct sdhci_host *host,
544 u8 power_mode);
545 unsigned int (*get_ro)(struct sdhci_host *host);
546 void (*reset)(struct sdhci_host *host, u8 mask);
547 int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode);
548 void (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
549 void (*hw_reset)(struct sdhci_host *host);
550 void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
551 void (*platform_init)(struct sdhci_host *host);
552 void (*card_event)(struct sdhci_host *host);
553 void (*voltage_switch)(struct sdhci_host *host);
554 int (*select_drive_strength)(struct sdhci_host *host,
555 struct mmc_card *card,
556 unsigned int max_dtr, int host_drv,
557 int card_drv, int *drv_type);
558 };
559
560 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
561
562 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
563 {
564 if (unlikely(host->ops->write_l))
565 host->ops->write_l(host, val, reg);
566 else
567 writel(val, host->ioaddr + reg);
568 }
569
570 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
571 {
572 if (unlikely(host->ops->write_w))
573 host->ops->write_w(host, val, reg);
574 else
575 writew(val, host->ioaddr + reg);
576 }
577
578 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
579 {
580 if (unlikely(host->ops->write_b))
581 host->ops->write_b(host, val, reg);
582 else
583 writeb(val, host->ioaddr + reg);
584 }
585
586 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
587 {
588 if (unlikely(host->ops->read_l))
589 return host->ops->read_l(host, reg);
590 else
591 return readl(host->ioaddr + reg);
592 }
593
594 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
595 {
596 if (unlikely(host->ops->read_w))
597 return host->ops->read_w(host, reg);
598 else
599 return readw(host->ioaddr + reg);
600 }
601
602 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
603 {
604 if (unlikely(host->ops->read_b))
605 return host->ops->read_b(host, reg);
606 else
607 return readb(host->ioaddr + reg);
608 }
609
610 #else
611
612 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
613 {
614 writel(val, host->ioaddr + reg);
615 }
616
617 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
618 {
619 writew(val, host->ioaddr + reg);
620 }
621
622 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
623 {
624 writeb(val, host->ioaddr + reg);
625 }
626
627 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
628 {
629 return readl(host->ioaddr + reg);
630 }
631
632 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
633 {
634 return readw(host->ioaddr + reg);
635 }
636
637 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
638 {
639 return readb(host->ioaddr + reg);
640 }
641
642 #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
643
644 extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
645 size_t priv_size);
646 extern void sdhci_free_host(struct sdhci_host *host);
647
648 static inline void *sdhci_priv(struct sdhci_host *host)
649 {
650 return (void *)host->private;
651 }
652
653 extern void sdhci_card_detect(struct sdhci_host *host);
654 extern int sdhci_add_host(struct sdhci_host *host);
655 extern void sdhci_remove_host(struct sdhci_host *host, int dead);
656 extern void sdhci_send_command(struct sdhci_host *host,
657 struct mmc_command *cmd);
658
659 static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
660 {
661 return !!(host->flags & SDHCI_SDIO_IRQ_ENABLED);
662 }
663
664 void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
665 void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
666 unsigned short vdd);
667 void sdhci_set_bus_width(struct sdhci_host *host, int width);
668 void sdhci_reset(struct sdhci_host *host, u8 mask);
669 void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
670
671 #ifdef CONFIG_PM
672 extern int sdhci_suspend_host(struct sdhci_host *host);
673 extern int sdhci_resume_host(struct sdhci_host *host);
674 extern void sdhci_enable_irq_wakeups(struct sdhci_host *host);
675 extern int sdhci_runtime_suspend_host(struct sdhci_host *host);
676 extern int sdhci_runtime_resume_host(struct sdhci_host *host);
677 #endif
678
679 #endif /* __SDHCI_HW_H */
Linux kernel - Deliverables
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