[linux-2.6-block.git] / drivers / mmc / host / sdhci.h

/*
 *  linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
 *
 *  Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */

#include <linux/scatterlist.h>

/*
 * Controller registers
 */

#define SDHCI_DMA_ADDRESS	0x00

#define SDHCI_BLOCK_SIZE	0x04
#define  SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))

#define SDHCI_BLOCK_COUNT	0x06

#define SDHCI_ARGUMENT		0x08

#define SDHCI_TRANSFER_MODE	0x0C
#define  SDHCI_TRNS_DMA		0x01
#define  SDHCI_TRNS_BLK_CNT_EN	0x02
#define  SDHCI_TRNS_ACMD12	0x04
#define  SDHCI_TRNS_READ	0x10
#define  SDHCI_TRNS_MULTI	0x20

#define SDHCI_COMMAND		0x0E
#define  SDHCI_CMD_RESP_MASK	0x03
#define  SDHCI_CMD_CRC		0x08
#define  SDHCI_CMD_INDEX	0x10
#define  SDHCI_CMD_DATA		0x20

#define  SDHCI_CMD_RESP_NONE	0x00
#define  SDHCI_CMD_RESP_LONG	0x01
#define  SDHCI_CMD_RESP_SHORT	0x02
#define  SDHCI_CMD_RESP_SHORT_BUSY 0x03

#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))

#define SDHCI_RESPONSE		0x10

#define SDHCI_BUFFER		0x20

#define SDHCI_PRESENT_STATE	0x24
#define  SDHCI_CMD_INHIBIT	0x00000001
#define  SDHCI_DATA_INHIBIT	0x00000002
#define  SDHCI_DOING_WRITE	0x00000100
#define  SDHCI_DOING_READ	0x00000200
#define  SDHCI_SPACE_AVAILABLE	0x00000400
#define  SDHCI_DATA_AVAILABLE	0x00000800
#define  SDHCI_CARD_PRESENT	0x00010000
#define  SDHCI_WRITE_PROTECT	0x00080000

#define SDHCI_HOST_CONTROL 	0x28
#define  SDHCI_CTRL_LED		0x01
#define  SDHCI_CTRL_4BITBUS	0x02
#define  SDHCI_CTRL_HISPD	0x04
#define  SDHCI_CTRL_DMA_MASK	0x18
#define   SDHCI_CTRL_SDMA	0x00
#define   SDHCI_CTRL_ADMA1	0x08
#define   SDHCI_CTRL_ADMA32	0x10
#define   SDHCI_CTRL_ADMA64	0x18

#define SDHCI_POWER_CONTROL	0x29
#define  SDHCI_POWER_ON		0x01
#define  SDHCI_POWER_180	0x0A
#define  SDHCI_POWER_300	0x0C
#define  SDHCI_POWER_330	0x0E

#define SDHCI_BLOCK_GAP_CONTROL	0x2A

#define SDHCI_WAKE_UP_CONTROL	0x2B

#define SDHCI_CLOCK_CONTROL	0x2C
#define  SDHCI_DIVIDER_SHIFT	8
#define  SDHCI_CLOCK_CARD_EN	0x0004
#define  SDHCI_CLOCK_INT_STABLE	0x0002
#define  SDHCI_CLOCK_INT_EN	0x0001

#define SDHCI_TIMEOUT_CONTROL	0x2E

#define SDHCI_SOFTWARE_RESET	0x2F
#define  SDHCI_RESET_ALL	0x01
#define  SDHCI_RESET_CMD	0x02
#define  SDHCI_RESET_DATA	0x04

#define SDHCI_INT_STATUS	0x30
#define SDHCI_INT_ENABLE	0x34
#define SDHCI_SIGNAL_ENABLE	0x38
#define  SDHCI_INT_RESPONSE	0x00000001
#define  SDHCI_INT_DATA_END	0x00000002
#define  SDHCI_INT_DMA_END	0x00000008
#define  SDHCI_INT_SPACE_AVAIL	0x00000010
#define  SDHCI_INT_DATA_AVAIL	0x00000020
#define  SDHCI_INT_CARD_INSERT	0x00000040
#define  SDHCI_INT_CARD_REMOVE	0x00000080
#define  SDHCI_INT_CARD_INT	0x00000100
#define  SDHCI_INT_ERROR	0x00008000
#define  SDHCI_INT_TIMEOUT	0x00010000
#define  SDHCI_INT_CRC		0x00020000
#define  SDHCI_INT_END_BIT	0x00040000
#define  SDHCI_INT_INDEX	0x00080000
#define  SDHCI_INT_DATA_TIMEOUT	0x00100000
#define  SDHCI_INT_DATA_CRC	0x00200000
#define  SDHCI_INT_DATA_END_BIT	0x00400000
#define  SDHCI_INT_BUS_POWER	0x00800000
#define  SDHCI_INT_ACMD12ERR	0x01000000
#define  SDHCI_INT_ADMA_ERROR	0x02000000

#define  SDHCI_INT_NORMAL_MASK	0x00007FFF
#define  SDHCI_INT_ERROR_MASK	0xFFFF8000

#define  SDHCI_INT_CMD_MASK	(SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
		SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
#define  SDHCI_INT_DATA_MASK	(SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
		SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
		SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
		SDHCI_INT_DATA_END_BIT)

#define SDHCI_ACMD12_ERR	0x3C

/* 3E-3F reserved */

#define SDHCI_CAPABILITIES	0x40
#define  SDHCI_TIMEOUT_CLK_MASK	0x0000003F
#define  SDHCI_TIMEOUT_CLK_SHIFT 0
#define  SDHCI_TIMEOUT_CLK_UNIT	0x00000080
#define  SDHCI_CLOCK_BASE_MASK	0x00003F00
#define  SDHCI_CLOCK_BASE_SHIFT	8
#define  SDHCI_MAX_BLOCK_MASK	0x00030000
#define  SDHCI_MAX_BLOCK_SHIFT  16
#define  SDHCI_CAN_DO_ADMA2	0x00080000
#define  SDHCI_CAN_DO_ADMA1	0x00100000
#define  SDHCI_CAN_DO_HISPD	0x00200000
#define  SDHCI_CAN_DO_DMA	0x00400000
#define  SDHCI_CAN_VDD_330	0x01000000
#define  SDHCI_CAN_VDD_300	0x02000000
#define  SDHCI_CAN_VDD_180	0x04000000
#define  SDHCI_CAN_64BIT	0x10000000

/* 44-47 reserved for more caps */

#define SDHCI_MAX_CURRENT	0x48

/* 4C-4F reserved for more max current */

#define SDHCI_SET_ACMD12_ERROR	0x50
#define SDHCI_SET_INT_ERROR	0x52

#define SDHCI_ADMA_ERROR	0x54

/* 55-57 reserved */

#define SDHCI_ADMA_ADDRESS	0x58

/* 60-FB reserved */

#define SDHCI_SLOT_INT_STATUS	0xFC

#define SDHCI_HOST_VERSION	0xFE
#define  SDHCI_VENDOR_VER_MASK	0xFF00
#define  SDHCI_VENDOR_VER_SHIFT	8
#define  SDHCI_SPEC_VER_MASK	0x00FF
#define  SDHCI_SPEC_VER_SHIFT	0
#define   SDHCI_SPEC_100	0
#define   SDHCI_SPEC_200	1

struct sdhci_ops;

struct sdhci_host {
	/* Data set by hardware interface driver */
	const char		*hw_name;	/* Hardware bus name */

	unsigned int		quirks;		/* Deviations from spec. */

/* Controller doesn't honor resets unless we touch the clock register */
#define SDHCI_QUIRK_CLOCK_BEFORE_RESET			(1<<0)
/* Controller has bad caps bits, but really supports DMA */
#define SDHCI_QUIRK_FORCE_DMA				(1<<1)
/* Controller doesn't like to be reset when there is no card inserted. */
#define SDHCI_QUIRK_NO_CARD_NO_RESET			(1<<2)
/* Controller doesn't like clearing the power reg before a change */
#define SDHCI_QUIRK_SINGLE_POWER_WRITE			(1<<3)
/* Controller has flaky internal state so reset it on each ios change */
#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS		(1<<4)
/* Controller has an unusable DMA engine */
#define SDHCI_QUIRK_BROKEN_DMA				(1<<5)
/* Controller has an unusable ADMA engine */
#define SDHCI_QUIRK_BROKEN_ADMA				(1<<6)
/* Controller can only DMA from 32-bit aligned addresses */
#define SDHCI_QUIRK_32BIT_DMA_ADDR			(1<<7)
/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
#define SDHCI_QUIRK_32BIT_DMA_SIZE			(1<<8)
/* Controller can only ADMA chunks that are a multiple of 32 bits */
#define SDHCI_QUIRK_32BIT_ADMA_SIZE			(1<<9)
/* Controller needs to be reset after each request to stay stable */
#define SDHCI_QUIRK_RESET_AFTER_REQUEST			(1<<10)
/* Controller needs voltage and power writes to happen separately */
#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER		(1<<11)
/* Controller provides an incorrect timeout value for transfers */
#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL			(1<<12)
/* Controller has an issue with buffer bits for small transfers */
#define SDHCI_QUIRK_BROKEN_SMALL_PIO			(1<<13)
/* Controller supports high speed but doesn't have the caps bit set */
#define SDHCI_QUIRK_FORCE_HIGHSPEED			(1<<14)

	int			irq;		/* Device IRQ */
	void __iomem *		ioaddr;		/* Mapped address */

	const struct sdhci_ops	*ops;		/* Low level hw interface */

	/* Internal data */
	struct mmc_host		*mmc;		/* MMC structure */
	u64			dma_mask;	/* custom DMA mask */

#ifdef CONFIG_LEDS_CLASS
	struct led_classdev	led;		/* LED control */
#endif

	spinlock_t		lock;		/* Mutex */

	int			flags;		/* Host attributes */
#define SDHCI_USE_DMA		(1<<0)		/* Host is DMA capable */
#define SDHCI_USE_ADMA		(1<<1)		/* Host is ADMA capable */
#define SDHCI_REQ_USE_DMA	(1<<2)		/* Use DMA for this req. */
#define SDHCI_DEVICE_DEAD	(1<<3)		/* Device unresponsive */

	unsigned int		version;	/* SDHCI spec. version */

	unsigned int		max_clk;	/* Max possible freq (MHz) */
	unsigned int		timeout_clk;	/* Timeout freq (KHz) */

	unsigned int		clock;		/* Current clock (MHz) */
	unsigned short		power;		/* Current voltage */

	struct mmc_request	*mrq;		/* Current request */
	struct mmc_command	*cmd;		/* Current command */
	struct mmc_data		*data;		/* Current data request */
	unsigned int		data_early:1;	/* Data finished before cmd */

	struct sg_mapping_iter	sg_miter;	/* SG state for PIO */
	unsigned int		blocks;		/* remaining PIO blocks */

	int			sg_count;	/* Mapped sg entries */

	u8			*adma_desc;	/* ADMA descriptor table */
	u8			*align_buffer;	/* Bounce buffer */

	dma_addr_t		adma_addr;	/* Mapped ADMA descr. table */
	dma_addr_t		align_addr;	/* Mapped bounce buffer */

	struct tasklet_struct	card_tasklet;	/* Tasklet structures */
	struct tasklet_struct	finish_tasklet;

	struct timer_list	timer;		/* Timer for timeouts */

	unsigned long		private[0] ____cacheline_aligned;
};


struct sdhci_ops {
	int		(*enable_dma)(struct sdhci_host *host);
};


extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
	size_t priv_size);
extern void sdhci_free_host(struct sdhci_host *host);

static inline void *sdhci_priv(struct sdhci_host *host)
{
	return (void *)host->private;
}

extern int sdhci_add_host(struct sdhci_host *host);
extern void sdhci_remove_host(struct sdhci_host *host, int dead);

#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
extern int sdhci_resume_host(struct sdhci_host *host);
#endif
Commit	Line	Data
d129bceb	1	/*
70f10482	2	* linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
d129bceb	3	*
b69c9058	4	* Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
d129bceb PO	5	*
d129bceb PO	6	* This program is free software; you can redistribute it and/or modify
643f720c PO	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or (at
	9	* your option) any later version.
d129bceb PO	10	*/
d129bceb PO	11
0c7ad106 AM	12	#include <linux/scatterlist.h>
0c7ad106 AM	13
d129bceb PO	14	/*
	15	* Controller registers
	16	*/
	17
	18	#define SDHCI_DMA_ADDRESS 0x00
	19
	20	#define SDHCI_BLOCK_SIZE 0x04
bab76961	21	#define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) \| (blksz & 0xFFF))
d129bceb PO	22
	23	#define SDHCI_BLOCK_COUNT 0x06
	24
	25	#define SDHCI_ARGUMENT 0x08
	26
	27	#define SDHCI_TRANSFER_MODE 0x0C
	28	#define SDHCI_TRNS_DMA 0x01
	29	#define SDHCI_TRNS_BLK_CNT_EN 0x02
	30	#define SDHCI_TRNS_ACMD12 0x04
	31	#define SDHCI_TRNS_READ 0x10
	32	#define SDHCI_TRNS_MULTI 0x20
	33
	34	#define SDHCI_COMMAND 0x0E
	35	#define SDHCI_CMD_RESP_MASK 0x03
	36	#define SDHCI_CMD_CRC 0x08
	37	#define SDHCI_CMD_INDEX 0x10
	38	#define SDHCI_CMD_DATA 0x20
	39
	40	#define SDHCI_CMD_RESP_NONE 0x00
	41	#define SDHCI_CMD_RESP_LONG 0x01
	42	#define SDHCI_CMD_RESP_SHORT 0x02
	43	#define SDHCI_CMD_RESP_SHORT_BUSY 0x03
	44
	45	#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) \| (f & 0xff))
	46
	47	#define SDHCI_RESPONSE 0x10
	48
	49	#define SDHCI_BUFFER 0x20
	50
	51	#define SDHCI_PRESENT_STATE 0x24
	52	#define SDHCI_CMD_INHIBIT 0x00000001
	53	#define SDHCI_DATA_INHIBIT 0x00000002
	54	#define SDHCI_DOING_WRITE 0x00000100
	55	#define SDHCI_DOING_READ 0x00000200
	56	#define SDHCI_SPACE_AVAILABLE 0x00000400
	57	#define SDHCI_DATA_AVAILABLE 0x00000800
	58	#define SDHCI_CARD_PRESENT 0x00010000
	59	#define SDHCI_WRITE_PROTECT 0x00080000
	60
	61	#define SDHCI_HOST_CONTROL 0x28
	62	#define SDHCI_CTRL_LED 0x01
	63	#define SDHCI_CTRL_4BITBUS 0x02
077df884	64	#define SDHCI_CTRL_HISPD 0x04
2134a922 PO	65	#define SDHCI_CTRL_DMA_MASK 0x18
	66	#define SDHCI_CTRL_SDMA 0x00
	67	#define SDHCI_CTRL_ADMA1 0x08
	68	#define SDHCI_CTRL_ADMA32 0x10
	69	#define SDHCI_CTRL_ADMA64 0x18
d129bceb PO	70
d129bceb PO	71	#define SDHCI_POWER_CONTROL 0x29
146ad66e PO	72	#define SDHCI_POWER_ON 0x01
	73	#define SDHCI_POWER_180 0x0A
	74	#define SDHCI_POWER_300 0x0C
	75	#define SDHCI_POWER_330 0x0E
d129bceb PO	76
	77	#define SDHCI_BLOCK_GAP_CONTROL 0x2A
	78
2df3b71b	79	#define SDHCI_WAKE_UP_CONTROL 0x2B
d129bceb PO	80
	81	#define SDHCI_CLOCK_CONTROL 0x2C
	82	#define SDHCI_DIVIDER_SHIFT 8
	83	#define SDHCI_CLOCK_CARD_EN 0x0004
	84	#define SDHCI_CLOCK_INT_STABLE 0x0002
	85	#define SDHCI_CLOCK_INT_EN 0x0001
	86
	87	#define SDHCI_TIMEOUT_CONTROL 0x2E
	88
	89	#define SDHCI_SOFTWARE_RESET 0x2F
	90	#define SDHCI_RESET_ALL 0x01
	91	#define SDHCI_RESET_CMD 0x02
	92	#define SDHCI_RESET_DATA 0x04
	93
	94	#define SDHCI_INT_STATUS 0x30
	95	#define SDHCI_INT_ENABLE 0x34
	96	#define SDHCI_SIGNAL_ENABLE 0x38
	97	#define SDHCI_INT_RESPONSE 0x00000001
	98	#define SDHCI_INT_DATA_END 0x00000002
	99	#define SDHCI_INT_DMA_END 0x00000008
a406f5a3 PO	100	#define SDHCI_INT_SPACE_AVAIL 0x00000010
a406f5a3 PO	101	#define SDHCI_INT_DATA_AVAIL 0x00000020
d129bceb PO	102	#define SDHCI_INT_CARD_INSERT 0x00000040
	103	#define SDHCI_INT_CARD_REMOVE 0x00000080
	104	#define SDHCI_INT_CARD_INT 0x00000100
964f9ce2	105	#define SDHCI_INT_ERROR 0x00008000
d129bceb PO	106	#define SDHCI_INT_TIMEOUT 0x00010000
	107	#define SDHCI_INT_CRC 0x00020000
	108	#define SDHCI_INT_END_BIT 0x00040000
	109	#define SDHCI_INT_INDEX 0x00080000
	110	#define SDHCI_INT_DATA_TIMEOUT 0x00100000
	111	#define SDHCI_INT_DATA_CRC 0x00200000
	112	#define SDHCI_INT_DATA_END_BIT 0x00400000
	113	#define SDHCI_INT_BUS_POWER 0x00800000
	114	#define SDHCI_INT_ACMD12ERR 0x01000000
2134a922	115	#define SDHCI_INT_ADMA_ERROR 0x02000000
d129bceb PO	116
	117	#define SDHCI_INT_NORMAL_MASK 0x00007FFF
	118	#define SDHCI_INT_ERROR_MASK 0xFFFF8000
	119
	120	#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE \| SDHCI_INT_TIMEOUT \| \
	121	SDHCI_INT_CRC \| SDHCI_INT_END_BIT \| SDHCI_INT_INDEX)
	122	#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END \| SDHCI_INT_DMA_END \| \
a406f5a3	123	SDHCI_INT_DATA_AVAIL \| SDHCI_INT_SPACE_AVAIL \| \
d129bceb PO	124	SDHCI_INT_DATA_TIMEOUT \| SDHCI_INT_DATA_CRC \| \
	125	SDHCI_INT_DATA_END_BIT)
	126
	127	#define SDHCI_ACMD12_ERR 0x3C
	128
	129	/* 3E-3F reserved */
	130
	131	#define SDHCI_CAPABILITIES 0x40
1c8cde92 PO	132	#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
	133	#define SDHCI_TIMEOUT_CLK_SHIFT 0
	134	#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
d129bceb PO	135	#define SDHCI_CLOCK_BASE_MASK 0x00003F00
d129bceb PO	136	#define SDHCI_CLOCK_BASE_SHIFT 8
1d676e02 PO	137	#define SDHCI_MAX_BLOCK_MASK 0x00030000
1d676e02 PO	138	#define SDHCI_MAX_BLOCK_SHIFT 16
2134a922 PO	139	#define SDHCI_CAN_DO_ADMA2 0x00080000
2134a922 PO	140	#define SDHCI_CAN_DO_ADMA1 0x00100000
077df884	141	#define SDHCI_CAN_DO_HISPD 0x00200000
146ad66e PO	142	#define SDHCI_CAN_DO_DMA 0x00400000
	143	#define SDHCI_CAN_VDD_330 0x01000000
	144	#define SDHCI_CAN_VDD_300 0x02000000
	145	#define SDHCI_CAN_VDD_180 0x04000000
2134a922	146	#define SDHCI_CAN_64BIT 0x10000000
d129bceb PO	147
	148	/* 44-47 reserved for more caps */
	149
	150	#define SDHCI_MAX_CURRENT 0x48
	151
	152	/* 4C-4F reserved for more max current */
	153
2134a922 PO	154	#define SDHCI_SET_ACMD12_ERROR 0x50
	155	#define SDHCI_SET_INT_ERROR 0x52
	156
	157	#define SDHCI_ADMA_ERROR 0x54
	158
	159	/* 55-57 reserved */
	160
	161	#define SDHCI_ADMA_ADDRESS 0x58
	162
	163	/* 60-FB reserved */
d129bceb PO	164
	165	#define SDHCI_SLOT_INT_STATUS 0xFC
	166
	167	#define SDHCI_HOST_VERSION 0xFE
4a965505 PO	168	#define SDHCI_VENDOR_VER_MASK 0xFF00
	169	#define SDHCI_VENDOR_VER_SHIFT 8
	170	#define SDHCI_SPEC_VER_MASK 0x00FF
	171	#define SDHCI_SPEC_VER_SHIFT 0
2134a922 PO	172	#define SDHCI_SPEC_100 0
2134a922 PO	173	#define SDHCI_SPEC_200 1
d129bceb	174
b8c86fc5	175	struct sdhci_ops;
d129bceb PO	176
d129bceb PO	177	struct sdhci_host {
b8c86fc5 PO	178	/* Data set by hardware interface driver */
	179	const char hw_name; / Hardware bus name */
	180
	181	unsigned int quirks; /* Deviations from spec. */
	182
	183	/* Controller doesn't honor resets unless we touch the clock register */
	184	#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
	185	/* Controller has bad caps bits, but really supports DMA */
	186	#define SDHCI_QUIRK_FORCE_DMA (1<<1)
	187	/* Controller doesn't like to be reset when there is no card inserted. */
	188	#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2)
	189	/* Controller doesn't like clearing the power reg before a change */
	190	#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3)
	191	/* Controller has flaky internal state so reset it on each ios change */
	192	#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4)
	193	/* Controller has an unusable DMA engine */
	194	#define SDHCI_QUIRK_BROKEN_DMA (1<<5)
2134a922 PO	195	/* Controller has an unusable ADMA engine */
2134a922 PO	196	#define SDHCI_QUIRK_BROKEN_ADMA (1<<6)
b8c86fc5	197	/* Controller can only DMA from 32-bit aligned addresses */
2134a922	198	#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7)
b8c86fc5	199	/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
2134a922 PO	200	#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8)
	201	/* Controller can only ADMA chunks that are a multiple of 32 bits */
	202	#define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9)
b8c86fc5	203	/* Controller needs to be reset after each request to stay stable */
2134a922	204	#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10)
b8c86fc5	205	/* Controller needs voltage and power writes to happen separately */
2134a922	206	#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11)
ee53ab5d	207	/* Controller provides an incorrect timeout value for transfers */
2134a922	208	#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12)
4a3cba32 PO	209	/* Controller has an issue with buffer bits for small transfers */
4a3cba32 PO	210	#define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13)
a4b76193 PO	211	/* Controller supports high speed but doesn't have the caps bit set */
a4b76193 PO	212	#define SDHCI_QUIRK_FORCE_HIGHSPEED (1<<14)
b8c86fc5 PO	213
	214	int irq; /* Device IRQ */
	215	void __iomem * ioaddr; /* Mapped address */
	216
	217	const struct sdhci_ops ops; / Low level hw interface */
	218
	219	/* Internal data */
d129bceb	220	struct mmc_host mmc; / MMC structure */
7659150c	221	u64 dma_mask; /* custom DMA mask */
d129bceb	222
2f730fec PO	223	#ifdef CONFIG_LEDS_CLASS
	224	struct led_classdev led; /* LED control */
	225	#endif
	226
d129bceb PO	227	spinlock_t lock; /* Mutex */
	228
	229	int flags; /* Host attributes */
c9fddbc4	230	#define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */
2134a922 PO	231	#define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */
	232	#define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */
	233	#define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */
	234
	235	unsigned int version; /* SDHCI spec. version */
d129bceb PO	236
d129bceb PO	237	unsigned int max_clk; /* Max possible freq (MHz) */
1c8cde92	238	unsigned int timeout_clk; /* Timeout freq (KHz) */
d129bceb PO	239
d129bceb PO	240	unsigned int clock; /* Current clock (MHz) */
146ad66e	241	unsigned short power; /* Current voltage */
d129bceb PO	242
	243	struct mmc_request mrq; / Current request */
	244	struct mmc_command cmd; / Current command */
	245	struct mmc_data data; / Current data request */
55654be9	246	unsigned int data_early:1; /* Data finished before cmd */
d129bceb	247
7659150c PO	248	struct sg_mapping_iter sg_miter; /* SG state for PIO */
7659150c PO	249	unsigned int blocks; /* remaining PIO blocks */
d129bceb	250
2134a922 PO	251	int sg_count; /* Mapped sg entries */
	252
	253	u8 adma_desc; / ADMA descriptor table */
	254	u8 align_buffer; / Bounce buffer */
	255
	256	dma_addr_t adma_addr; /* Mapped ADMA descr. table */
	257	dma_addr_t align_addr; /* Mapped bounce buffer */
	258
d129bceb PO	259	struct tasklet_struct card_tasklet; /* Tasklet structures */
	260	struct tasklet_struct finish_tasklet;
	261
	262	struct timer_list timer; /* Timer for timeouts */
d129bceb	263
b8c86fc5 PO	264	unsigned long private[0] ____cacheline_aligned;
b8c86fc5 PO	265	};
d129bceb	266
df673b22	267
b8c86fc5 PO	268	struct sdhci_ops {
b8c86fc5 PO	269	int (enable_dma)(struct sdhci_host host);
d129bceb	270	};
b8c86fc5 PO	271
	272
	273	extern struct sdhci_host sdhci_alloc_host(struct device dev,
	274	size_t priv_size);
	275	extern void sdhci_free_host(struct sdhci_host *host);
	276
	277	static inline void sdhci_priv(struct sdhci_host host)
	278	{
	279	return (void *)host->private;
	280	}
	281
	282	extern int sdhci_add_host(struct sdhci_host *host);
1e72859e	283	extern void sdhci_remove_host(struct sdhci_host *host, int dead);
b8c86fc5 PO	284
	285	#ifdef CONFIG_PM
	286	extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
	287	extern int sdhci_resume_host(struct sdhci_host *host);
	288	#endif