xref: /freebsd/sys/dev/sdhci/sdhci.h (revision c43e99fd14c915adcb7173dd49c31e803ceadfe0)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  * $FreeBSD$
28  */
29 
30 #ifndef	__SDHCI_H__
31 #define	__SDHCI_H__
32 
33 #include "opt_mmccam.h"
34 
35 #define	DMA_BLOCK_SIZE	4096
36 #define	DMA_BOUNDARY	0	/* DMA reload every 4K */
37 
38 /* Controller doesn't honor resets unless we touch the clock register */
39 #define	SDHCI_QUIRK_CLOCK_BEFORE_RESET			(1 << 0)
40 /* Controller really supports DMA */
41 #define	SDHCI_QUIRK_FORCE_DMA				(1 << 1)
42 /* Controller has unusable DMA engine */
43 #define	SDHCI_QUIRK_BROKEN_DMA				(1 << 2)
44 /* Controller doesn't like to be reset when there is no card inserted. */
45 #define	SDHCI_QUIRK_NO_CARD_NO_RESET			(1 << 3)
46 /* Controller has flaky internal state so reset it on each ios change */
47 #define	SDHCI_QUIRK_RESET_ON_IOS			(1 << 4)
48 /* Controller can only DMA chunk sizes that are a multiple of 32 bits */
49 #define	SDHCI_QUIRK_32BIT_DMA_SIZE			(1 << 5)
50 /* Controller needs to be reset after each request to stay stable */
51 #define	SDHCI_QUIRK_RESET_AFTER_REQUEST			(1 << 6)
52 /* Controller has an off-by-one issue with timeout value */
53 #define	SDHCI_QUIRK_INCR_TIMEOUT_CONTROL		(1 << 7)
54 /* Controller has broken read timings */
55 #define	SDHCI_QUIRK_BROKEN_TIMINGS			(1 << 8)
56 /* Controller needs lowered frequency */
57 #define	SDHCI_QUIRK_LOWER_FREQUENCY			(1 << 9)
58 /* Data timeout is invalid, should use SD clock */
59 #define	SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK		(1 << 10)
60 /* Timeout value is invalid, should be overriden */
61 #define	SDHCI_QUIRK_BROKEN_TIMEOUT_VAL			(1 << 11)
62 /* SDHCI_CAPABILITIES is invalid */
63 #define	SDHCI_QUIRK_MISSING_CAPS			(1 << 12)
64 /* Hardware shifts the 136-bit response, don't do it in software. */
65 #define	SDHCI_QUIRK_DONT_SHIFT_RESPONSE			(1 << 13)
66 /* Wait to see reset bit asserted before waiting for de-asserted  */
67 #define	SDHCI_QUIRK_WAITFOR_RESET_ASSERTED		(1 << 14)
68 /* Leave controller in standard mode when putting card in HS mode. */
69 #define	SDHCI_QUIRK_DONT_SET_HISPD_BIT			(1 << 15)
70 /* Alternate clock source is required when supplying a 400 KHz clock. */
71 #define	SDHCI_QUIRK_BCM577XX_400KHZ_CLKSRC		(1 << 16)
72 /* Card insert/remove interrupts don't work, polling required. */
73 #define	SDHCI_QUIRK_POLL_CARD_PRESENT			(1 << 17)
74 /* All controller slots are non-removable. */
75 #define	SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE		(1 << 18)
76 /* Issue custom Intel controller reset sequence after power-up. */
77 #define	SDHCI_QUIRK_INTEL_POWER_UP_RESET		(1 << 19)
78 /* Data timeout is invalid, use 1 MHz clock instead. */
79 #define	SDHCI_QUIRK_DATA_TIMEOUT_1MHZ			(1 << 20)
80 /* Controller doesn't allow access boot partitions. */
81 #define	SDHCI_QUIRK_BOOT_NOACC				(1 << 21)
82 /* Controller waits for busy responses. */
83 #define	SDHCI_QUIRK_WAIT_WHILE_BUSY			(1 << 22)
84 /* Controller supports eMMC DDR52 mode. */
85 #define	SDHCI_QUIRK_MMC_DDR52				(1 << 23)
86 /* Controller support for UHS DDR50 mode is broken. */
87 #define	SDHCI_QUIRK_BROKEN_UHS_DDR50			(1 << 24)
88 /* Controller support for eMMC HS200 mode is broken. */
89 #define	SDHCI_QUIRK_BROKEN_MMC_HS200			(1 << 25)
90 /* Controller reports support for eMMC HS400 mode as SDHCI_CAN_MMC_HS400. */
91 #define	SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400		(1 << 26)
92 /* Controller support for SDHCI_CTRL2_PRESET_VALUE is broken. */
93 #define	SDHCI_QUIRK_PRESET_VALUE_BROKEN			(1 << 27)
94 /* Controller does not support or the support for ACMD12 is broken. */
95 #define	SDHCI_QUIRK_BROKEN_AUTO_STOP			(1 << 28)
96 
97 /*
98  * Controller registers
99  */
100 #define	SDHCI_DMA_ADDRESS	0x00
101 
102 #define	SDHCI_BLOCK_SIZE	0x04
103 #define	 SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
104 
105 #define	SDHCI_BLOCK_COUNT	0x06
106 
107 #define	SDHCI_ARGUMENT		0x08
108 
109 #define	SDHCI_TRANSFER_MODE	0x0C
110 #define	 SDHCI_TRNS_DMA		0x01
111 #define	 SDHCI_TRNS_BLK_CNT_EN	0x02
112 #define	 SDHCI_TRNS_ACMD12	0x04
113 #define	 SDHCI_TRNS_READ	0x10
114 #define	 SDHCI_TRNS_MULTI	0x20
115 
116 #define	SDHCI_COMMAND_FLAGS	0x0E
117 #define	 SDHCI_CMD_RESP_NONE	0x00
118 #define	 SDHCI_CMD_RESP_LONG	0x01
119 #define	 SDHCI_CMD_RESP_SHORT	0x02
120 #define	 SDHCI_CMD_RESP_SHORT_BUSY 0x03
121 #define	 SDHCI_CMD_RESP_MASK	0x03
122 #define	 SDHCI_CMD_CRC		0x08
123 #define	 SDHCI_CMD_INDEX	0x10
124 #define	 SDHCI_CMD_DATA		0x20
125 #define	 SDHCI_CMD_TYPE_NORMAL	0x00
126 #define	 SDHCI_CMD_TYPE_SUSPEND	0x40
127 #define	 SDHCI_CMD_TYPE_RESUME	0x80
128 #define	 SDHCI_CMD_TYPE_ABORT	0xc0
129 #define	 SDHCI_CMD_TYPE_MASK	0xc0
130 
131 #define	SDHCI_COMMAND		0x0F
132 
133 #define	SDHCI_RESPONSE		0x10
134 
135 #define	SDHCI_BUFFER		0x20
136 
137 #define	SDHCI_PRESENT_STATE	0x24
138 #define	 SDHCI_CMD_INHIBIT	0x00000001
139 #define	 SDHCI_DAT_INHIBIT	0x00000002
140 #define	 SDHCI_DAT_ACTIVE	0x00000004
141 #define	 SDHCI_RETUNE_REQUEST	0x00000008
142 #define	 SDHCI_DOING_WRITE	0x00000100
143 #define	 SDHCI_DOING_READ	0x00000200
144 #define	 SDHCI_SPACE_AVAILABLE	0x00000400
145 #define	 SDHCI_DATA_AVAILABLE	0x00000800
146 #define	 SDHCI_CARD_PRESENT	0x00010000
147 #define	 SDHCI_CARD_STABLE	0x00020000
148 #define	 SDHCI_CARD_PIN		0x00040000
149 #define	 SDHCI_WRITE_PROTECT	0x00080000
150 #define	 SDHCI_STATE_DAT_MASK	0x00f00000
151 #define	 SDHCI_STATE_CMD	0x01000000
152 
153 #define	SDHCI_HOST_CONTROL	0x28
154 #define	 SDHCI_CTRL_LED		0x01
155 #define	 SDHCI_CTRL_4BITBUS	0x02
156 #define	 SDHCI_CTRL_HISPD	0x04
157 #define	 SDHCI_CTRL_SDMA	0x08
158 #define	 SDHCI_CTRL_ADMA2	0x10
159 #define	 SDHCI_CTRL_ADMA264	0x18
160 #define	 SDHCI_CTRL_DMA_MASK	0x18
161 #define	 SDHCI_CTRL_8BITBUS	0x20
162 #define	 SDHCI_CTRL_CARD_DET	0x40
163 #define	 SDHCI_CTRL_FORCE_CARD	0x80
164 
165 #define	SDHCI_POWER_CONTROL	0x29
166 #define	 SDHCI_POWER_ON		0x01
167 #define	 SDHCI_POWER_180	0x0A
168 #define	 SDHCI_POWER_300	0x0C
169 #define	 SDHCI_POWER_330	0x0E
170 
171 #define	SDHCI_BLOCK_GAP_CONTROL	0x2A
172 
173 #define	SDHCI_WAKE_UP_CONTROL	0x2B
174 
175 #define	SDHCI_CLOCK_CONTROL	0x2C
176 #define	 SDHCI_DIVIDER_MASK	0xff
177 #define	 SDHCI_DIVIDER_MASK_LEN	8
178 #define	 SDHCI_DIVIDER_SHIFT	8
179 #define	 SDHCI_DIVIDER_HI_MASK	3
180 #define	 SDHCI_DIVIDER_HI_SHIFT	6
181 #define	 SDHCI_CLOCK_CARD_EN	0x0004
182 #define	 SDHCI_CLOCK_INT_STABLE	0x0002
183 #define	 SDHCI_CLOCK_INT_EN	0x0001
184 #define	 SDHCI_DIVIDERS_MASK	\
185     ((SDHCI_DIVIDER_MASK << SDHCI_DIVIDER_SHIFT) | \
186     (SDHCI_DIVIDER_HI_MASK << SDHCI_DIVIDER_HI_SHIFT))
187 
188 #define	SDHCI_TIMEOUT_CONTROL	0x2E
189 
190 #define	SDHCI_SOFTWARE_RESET	0x2F
191 #define	 SDHCI_RESET_ALL	0x01
192 #define	 SDHCI_RESET_CMD	0x02
193 #define	 SDHCI_RESET_DATA	0x04
194 
195 #define	SDHCI_INT_STATUS	0x30
196 #define	SDHCI_INT_ENABLE	0x34
197 #define	SDHCI_SIGNAL_ENABLE	0x38
198 #define	 SDHCI_INT_RESPONSE	0x00000001
199 #define	 SDHCI_INT_DATA_END	0x00000002
200 #define	 SDHCI_INT_BLOCK_GAP	0x00000004
201 #define	 SDHCI_INT_DMA_END	0x00000008
202 #define	 SDHCI_INT_SPACE_AVAIL	0x00000010
203 #define	 SDHCI_INT_DATA_AVAIL	0x00000020
204 #define	 SDHCI_INT_CARD_INSERT	0x00000040
205 #define	 SDHCI_INT_CARD_REMOVE	0x00000080
206 #define	 SDHCI_INT_CARD_INT	0x00000100
207 #define	 SDHCI_INT_INT_A	0x00000200
208 #define	 SDHCI_INT_INT_B	0x00000400
209 #define	 SDHCI_INT_INT_C	0x00000800
210 #define	 SDHCI_INT_RETUNE	0x00001000
211 #define	 SDHCI_INT_ERROR	0x00008000
212 #define	 SDHCI_INT_TIMEOUT	0x00010000
213 #define	 SDHCI_INT_CRC		0x00020000
214 #define	 SDHCI_INT_END_BIT	0x00040000
215 #define	 SDHCI_INT_INDEX	0x00080000
216 #define	 SDHCI_INT_DATA_TIMEOUT	0x00100000
217 #define	 SDHCI_INT_DATA_CRC	0x00200000
218 #define	 SDHCI_INT_DATA_END_BIT	0x00400000
219 #define	 SDHCI_INT_BUS_POWER	0x00800000
220 #define	 SDHCI_INT_ACMD12ERR	0x01000000
221 #define	 SDHCI_INT_ADMAERR	0x02000000
222 #define	 SDHCI_INT_TUNEERR	0x04000000
223 
224 #define	 SDHCI_INT_NORMAL_MASK	0x00007FFF
225 #define	 SDHCI_INT_ERROR_MASK	0xFFFF8000
226 
227 #define	 SDHCI_INT_CMD_ERROR_MASK	(SDHCI_INT_TIMEOUT | \
228 		SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
229 
230 #define	 SDHCI_INT_CMD_MASK	(SDHCI_INT_RESPONSE | SDHCI_INT_CMD_ERROR_MASK)
231 
232 #define	 SDHCI_INT_DATA_MASK	(SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
233 		SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
234 		SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
235 		SDHCI_INT_DATA_END_BIT)
236 
237 #define	SDHCI_ACMD12_ERR	0x3C
238 
239 #define	SDHCI_HOST_CONTROL2	0x3E
240 #define	 SDHCI_CTRL2_PRESET_VALUE	0x8000
241 #define	 SDHCI_CTRL2_ASYNC_INTR	0x4000
242 #define	 SDHCI_CTRL2_64BIT_ENABLE	0x2000
243 #define	 SDHCI_CTRL2_HOST_V4_ENABLE	0x1000
244 #define	 SDHCI_CTRL2_CMD23_ENABLE	0x0800
245 #define	 SDHCI_CTRL2_ADMA2_LENGTH_MODE	0x0400
246 #define	 SDHCI_CTRL2_UHS2_IFACE_ENABLE	0x0100
247 #define	 SDHCI_CTRL2_SAMPLING_CLOCK	0x0080
248 #define	 SDHCI_CTRL2_EXEC_TUNING	0x0040
249 #define	 SDHCI_CTRL2_DRIVER_TYPE_MASK	0x0030
250 #define	 SDHCI_CTRL2_DRIVER_TYPE_B	0x0000
251 #define	 SDHCI_CTRL2_DRIVER_TYPE_A	0x0010
252 #define	 SDHCI_CTRL2_DRIVER_TYPE_C	0x0020
253 #define	 SDHCI_CTRL2_DRIVER_TYPE_D	0x0030
254 #define	 SDHCI_CTRL2_S18_ENABLE	0x0008
255 #define	 SDHCI_CTRL2_UHS_MASK	0x0007
256 #define	 SDHCI_CTRL2_UHS_SDR12	0x0000
257 #define	 SDHCI_CTRL2_UHS_SDR25	0x0001
258 #define	 SDHCI_CTRL2_UHS_SDR50	0x0002
259 #define	 SDHCI_CTRL2_UHS_SDR104	0x0003
260 #define	 SDHCI_CTRL2_UHS_DDR50	0x0004
261 #define	 SDHCI_CTRL2_MMC_HS400	0x0005	/* non-standard */
262 
263 #define	SDHCI_CAPABILITIES	0x40
264 #define	 SDHCI_TIMEOUT_CLK_MASK	0x0000003F
265 #define	 SDHCI_TIMEOUT_CLK_SHIFT 0
266 #define	 SDHCI_TIMEOUT_CLK_UNIT	0x00000080
267 #define	 SDHCI_CLOCK_BASE_MASK	0x00003F00
268 #define	 SDHCI_CLOCK_V3_BASE_MASK	0x0000FF00
269 #define	 SDHCI_CLOCK_BASE_SHIFT	8
270 #define	 SDHCI_MAX_BLOCK_MASK	0x00030000
271 #define	 SDHCI_MAX_BLOCK_SHIFT  16
272 #define	 SDHCI_CAN_DO_8BITBUS	0x00040000
273 #define	 SDHCI_CAN_DO_ADMA2	0x00080000
274 #define	 SDHCI_CAN_DO_HISPD	0x00200000
275 #define	 SDHCI_CAN_DO_DMA	0x00400000
276 #define	 SDHCI_CAN_DO_SUSPEND	0x00800000
277 #define	 SDHCI_CAN_VDD_330	0x01000000
278 #define	 SDHCI_CAN_VDD_300	0x02000000
279 #define	 SDHCI_CAN_VDD_180	0x04000000
280 #define	 SDHCI_CAN_DO_64BIT	0x10000000
281 #define	 SDHCI_CAN_ASYNC_INTR	0x20000000
282 #define	 SDHCI_SLOTTYPE_MASK	0xC0000000
283 #define	 SDHCI_SLOTTYPE_REMOVABLE	0x00000000
284 #define	 SDHCI_SLOTTYPE_EMBEDDED	0x40000000
285 #define	 SDHCI_SLOTTYPE_SHARED	0x80000000
286 
287 #define	SDHCI_CAPABILITIES2	0x44
288 #define	 SDHCI_CAN_SDR50	0x00000001
289 #define	 SDHCI_CAN_SDR104	0x00000002
290 #define	 SDHCI_CAN_DDR50	0x00000004
291 #define	 SDHCI_CAN_DRIVE_TYPE_A	0x00000010
292 #define	 SDHCI_CAN_DRIVE_TYPE_C	0x00000020
293 #define	 SDHCI_CAN_DRIVE_TYPE_D	0x00000040
294 #define	 SDHCI_RETUNE_CNT_MASK	0x00000F00
295 #define	 SDHCI_RETUNE_CNT_SHIFT	8
296 #define	 SDHCI_TUNE_SDR50	0x00002000
297 #define	 SDHCI_RETUNE_MODES_MASK  0x0000C000
298 #define	 SDHCI_RETUNE_MODES_SHIFT 14
299 #define	 SDHCI_CLOCK_MULT_MASK	0x00FF0000
300 #define	 SDHCI_CLOCK_MULT_SHIFT	16
301 #define	 SDHCI_CAN_MMC_HS400	0x80000000	/* non-standard */
302 
303 #define	SDHCI_MAX_CURRENT	0x48
304 #define	SDHCI_FORCE_AUTO_EVENT	0x50
305 #define	SDHCI_FORCE_INTR_EVENT	0x52
306 
307 #define	SDHCI_ADMA_ERR		0x54
308 #define	 SDHCI_ADMA_ERR_LENGTH	0x04
309 #define	 SDHCI_ADMA_ERR_STATE_MASK	0x03
310 #define	 SDHCI_ADMA_ERR_STATE_STOP	0x00
311 #define	 SDHCI_ADMA_ERR_STATE_FDS	0x01
312 #define	 SDHCI_ADMA_ERR_STATE_TFR	0x03
313 
314 #define	SDHCI_ADMA_ADDRESS_LO	0x58
315 #define	SDHCI_ADMA_ADDRESS_HI	0x5C
316 
317 #define	SDHCI_PRESET_VALUE	0x60
318 #define	SDHCI_SHARED_BUS_CTRL	0xE0
319 
320 #define	SDHCI_SLOT_INT_STATUS	0xFC
321 
322 #define	SDHCI_HOST_VERSION	0xFE
323 #define	 SDHCI_VENDOR_VER_MASK	0xFF00
324 #define	 SDHCI_VENDOR_VER_SHIFT	8
325 #define	 SDHCI_SPEC_VER_MASK	0x00FF
326 #define	 SDHCI_SPEC_VER_SHIFT	0
327 #define	SDHCI_SPEC_100		0
328 #define	SDHCI_SPEC_200		1
329 #define	SDHCI_SPEC_300		2
330 #define	SDHCI_SPEC_400		3
331 #define	SDHCI_SPEC_410		4
332 #define	SDHCI_SPEC_420		5
333 
334 SYSCTL_DECL(_hw_sdhci);
335 
336 extern u_int sdhci_quirk_clear;
337 extern u_int sdhci_quirk_set;
338 
339 struct sdhci_slot {
340 	struct mtx	mtx;		/* Slot mutex */
341 	u_int		quirks;		/* Chip specific quirks */
342 	u_int		caps;		/* Override SDHCI_CAPABILITIES */
343 	u_int		caps2;		/* Override SDHCI_CAPABILITIES2 */
344 	device_t	bus;		/* Bus device */
345 	device_t	dev;		/* Slot device */
346 	u_char		num;		/* Slot number */
347 	u_char		opt;		/* Slot options */
348 #define	SDHCI_HAVE_DMA			0x01
349 #define	SDHCI_PLATFORM_TRANSFER		0x02
350 #define	SDHCI_NON_REMOVABLE		0x04
351 #define	SDHCI_TUNING_SUPPORTED		0x08
352 #define	SDHCI_TUNING_ENABLED		0x10
353 #define	SDHCI_SDR50_NEEDS_TUNING	0x20
354 #define	SDHCI_SLOT_EMBEDDED		0x40
355 	u_char		version;
356 	int		timeout;	/* Transfer timeout */
357 	uint32_t	max_clk;	/* Max possible freq */
358 	uint32_t	timeout_clk;	/* Timeout freq */
359 	bus_dma_tag_t	dmatag;
360 	bus_dmamap_t	dmamap;
361 	u_char		*dmamem;
362 	bus_addr_t	paddr;		/* DMA buffer address */
363 	struct task	card_task;	/* Card presence check task */
364 	struct timeout_task
365 			card_delayed_task;/* Card insert delayed task */
366 	struct callout	card_poll_callout;/* Card present polling callout */
367 	struct callout	timeout_callout;/* Card command/data response timeout */
368 	struct callout	retune_callout;	/* Re-tuning mode 1 callout */
369 	struct mmc_host host;		/* Host parameters */
370 	struct mmc_request *req;	/* Current request */
371 	struct mmc_command *curcmd;	/* Current command of current request */
372 
373 	struct mmc_request *tune_req;	/* Tuning request */
374 	struct mmc_command *tune_cmd;	/* Tuning command of tuning request */
375 	struct mmc_data *tune_data;	/* Tuning data of tuning command */
376 	uint32_t	retune_ticks;	/* Re-tuning callout ticks [hz] */
377 	uint32_t	intmask;	/* Current interrupt mask */
378 	uint32_t	clock;		/* Current clock freq. */
379 	size_t		offset;		/* Data buffer offset */
380 	uint8_t		hostctrl;	/* Current host control register */
381 	uint8_t		retune_count;	/* Controller re-tuning count [s] */
382 	uint8_t		retune_mode;	/* Controller re-tuning mode */
383 #define	SDHCI_RETUNE_MODE_1	0x00
384 #define	SDHCI_RETUNE_MODE_2	0x01
385 #define	SDHCI_RETUNE_MODE_3	0x02
386 	uint8_t		retune_req;	/* Re-tuning request status */
387 #define	SDHCI_RETUNE_REQ_NEEDED	0x01	/* Re-tuning w/o circuit reset needed */
388 #define	SDHCI_RETUNE_REQ_RESET	0x02	/* Re-tuning w/ circuit reset needed */
389 	u_char		power;		/* Current power */
390 	u_char		bus_busy;	/* Bus busy status */
391 	u_char		cmd_done;	/* CMD command part done flag */
392 	u_char		data_done;	/* DAT command part done flag */
393 	u_char		flags;		/* Request execution flags */
394 #define	CMD_STARTED		1
395 #define	STOP_STARTED		2
396 #define	SDHCI_USE_DMA		4	/* Use DMA for this req. */
397 #define	PLATFORM_DATA_STARTED	8	/* Data xfer is handled by platform */
398 
399 #ifdef MMCCAM
400 	/* CAM stuff */
401 	union ccb	*ccb;
402 	struct cam_devq		*devq;
403 	struct cam_sim		*sim;
404 	struct mtx		sim_mtx;
405 	u_char			card_present; /* XXX Maybe derive this from elsewhere? */
406 #endif
407 };
408 
409 int sdhci_generic_read_ivar(device_t bus, device_t child, int which,
410     uintptr_t *result);
411 int sdhci_generic_write_ivar(device_t bus, device_t child, int which,
412     uintptr_t value);
413 int sdhci_init_slot(device_t dev, struct sdhci_slot *slot, int num);
414 void sdhci_start_slot(struct sdhci_slot *slot);
415 /* performs generic clean-up for platform transfers */
416 void sdhci_finish_data(struct sdhci_slot *slot);
417 int sdhci_cleanup_slot(struct sdhci_slot *slot);
418 int sdhci_generic_suspend(struct sdhci_slot *slot);
419 int sdhci_generic_resume(struct sdhci_slot *slot);
420 int sdhci_generic_update_ios(device_t brdev, device_t reqdev);
421 int sdhci_generic_tune(device_t brdev, device_t reqdev, bool hs400);
422 int sdhci_generic_switch_vccq(device_t brdev, device_t reqdev);
423 int sdhci_generic_retune(device_t brdev, device_t reqdev, bool reset);
424 int sdhci_generic_request(device_t brdev, device_t reqdev,
425     struct mmc_request *req);
426 int sdhci_generic_get_ro(device_t brdev, device_t reqdev);
427 int sdhci_generic_acquire_host(device_t brdev, device_t reqdev);
428 int sdhci_generic_release_host(device_t brdev, device_t reqdev);
429 void sdhci_generic_intr(struct sdhci_slot *slot);
430 uint32_t sdhci_generic_min_freq(device_t brdev, struct sdhci_slot *slot);
431 bool sdhci_generic_get_card_present(device_t brdev, struct sdhci_slot *slot);
432 void sdhci_generic_set_uhs_timing(device_t brdev, struct sdhci_slot *slot);
433 void sdhci_handle_card_present(struct sdhci_slot *slot, bool is_present);
434 
435 #endif	/* __SDHCI_H__ */
436