/* *  linux/include/linux/mmc/mmc.h * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */#ifndef MMC_H#define MMC_H#include <linux/list.h>#include <linux/interrupt.h>#include <linux/device.h>struct request;struct mmc_data;struct mmc_request;struct mmc_command {	u32			opcode;	u32			arg;	u32			resp[4];	unsigned int		flags;		/* expected response type */#define MMC_RSP_NONE	(0 << 0)#define MMC_RSP_SHORT	(1 << 0)#define MMC_RSP_LONG	(2 << 0)#define MMC_RSP_MASK	(3 << 0)#define MMC_RSP_CRC	(1 << 3)		/* expect valid crc */#define MMC_RSP_BUSY	(1 << 4)		/* card may send busy *//* * These are the response types, and correspond to valid bit * patterns of the above flags.  One additional valid pattern * is all zeros, which means we don't expect a response. */#define MMC_RSP_R1	(MMC_RSP_SHORT|MMC_RSP_CRC)#define MMC_RSP_R1B	(MMC_RSP_SHORT|MMC_RSP_CRC|MMC_RSP_BUSY)#define MMC_RSP_R2	(MMC_RSP_LONG|MMC_RSP_CRC)#define MMC_RSP_R3	(MMC_RSP_SHORT)#define MMC_RSP_R6	(MMC_RSP_SHORT|MMC_RSP_CRC)	unsigned int		retries;	/* max number of retries */	unsigned int		error;		/* command error */#define MMC_ERR_NONE	0#define MMC_ERR_TIMEOUT	1#define MMC_ERR_BADCRC	2#define MMC_ERR_FIFO	3#define MMC_ERR_FAILED	4#define MMC_ERR_INVALID	5	struct mmc_data		*data;		/* data segment associated with cmd */	struct mmc_request	*mrq;		/* assoicated request */};struct mmc_data {	unsigned int		timeout_ns;	/* data timeout (in ns, max 80ms) */	unsigned int		timeout_clks;	/* data timeout (in clocks) */	unsigned int		blksz_bits;	/* data block size */	unsigned int		blocks;		/* number of blocks */	struct request		*req __attribute__((deprecated));/* request structure (use the sg list instead) */	unsigned int		error;		/* data error */	unsigned int		flags;#define MMC_DATA_WRITE	(1 << 8)#define MMC_DATA_READ	(1 << 9)#define MMC_DATA_STREAM	(1 << 10)	unsigned int		bytes_xfered;	struct mmc_command	*stop;		/* stop command */	struct mmc_request	*mrq;		/* assoicated request */	unsigned int		sg_len;		/* size of scatter list */	struct scatterlist	*sg;		/* I/O scatter list */};struct mmc_request {	struct mmc_command	*cmd;	struct mmc_data		*data;	struct mmc_command	*stop;	void			*done_data;	/* completion data */	void			(*done)(struct mmc_request *);/* completion function */};struct mmc_host;struct mmc_card;extern int mmc_wait_for_req(struct mmc_host *, struct mmc_request *);extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);extern int mmc_wait_for_app_cmd(struct mmc_host *, unsigned int,	struct mmc_command *, int);extern int __mmc_claim_host(struct mmc_host *host, struct mmc_card *card);static inline void mmc_claim_host(struct mmc_host *host){	__mmc_claim_host(host, (struct mmc_card *)-1);}extern void mmc_release_host(struct mmc_host *host);#endif