[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / mmc / card / queue.h

#ifndef MMC_QUEUE_H
#define MMC_QUEUE_H

#define MMC_REQ_SPECIAL_MASK	(REQ_DISCARD | REQ_FLUSH)

struct request;
struct task_struct;

struct mmc_blk_request {
	struct mmc_request	mrq;
	struct mmc_command	sbc;
	struct mmc_command	cmd;
	struct mmc_command	stop;
	struct mmc_data		data;
};

enum mmc_packed_type {
	MMC_PACKED_NONE = 0,
	MMC_PACKED_WRITE,
};

#define mmc_packed_cmd(type)	((type) != MMC_PACKED_NONE)
#define mmc_packed_wr(type)	((type) == MMC_PACKED_WRITE)

struct mmc_packed {
	struct list_head	list;
	u32			cmd_hdr[1024];
	unsigned int		blocks;
	u8			nr_entries;
	u8			retries;
	s16			idx_failure;
};

struct mmc_queue_req {
	struct request		*req;
	struct mmc_blk_request	brq;
	struct scatterlist	*sg;
	char			*bounce_buf;
	struct scatterlist	*bounce_sg;
	unsigned int		bounce_sg_len;
	struct mmc_async_req	mmc_active;
	enum mmc_packed_type	cmd_type;
	struct mmc_packed	*packed;
};

struct mmc_queue {
	struct mmc_card		*card;
	struct task_struct	*thread;
	struct semaphore	thread_sem;
	unsigned int		flags;
#define MMC_QUEUE_SUSPENDED	(1 << 0)
#define MMC_QUEUE_NEW_REQUEST	(1 << 1)

	int			(*issue_fn)(struct mmc_queue *, struct request *);
	void			*data;
	struct request_queue	*queue;
	struct mmc_queue_req	mqrq[2];
	struct mmc_queue_req	*mqrq_cur;
	struct mmc_queue_req	*mqrq_prev;
};

extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
			  const char *);
extern void mmc_cleanup_queue(struct mmc_queue *);
extern void mmc_queue_suspend(struct mmc_queue *);
extern void mmc_queue_resume(struct mmc_queue *);

extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
				     struct mmc_queue_req *);
extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
extern void mmc_queue_bounce_post(struct mmc_queue_req *);

extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
extern void mmc_packed_clean(struct mmc_queue *);

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef MMC_QUEUE_H
	2	#define MMC_QUEUE_H
	3
ef3a69c7 SJ	4	#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD \| REQ_FLUSH)
ef3a69c7 SJ	5
1da177e4 LT	6	struct request;
	7	struct task_struct;
	8
97868a2b PF	9	struct mmc_blk_request {
	10	struct mmc_request mrq;
	11	struct mmc_command sbc;
	12	struct mmc_command cmd;
	13	struct mmc_command stop;
	14	struct mmc_data data;
	15	};
	16
ce39f9d1 SJ	17	enum mmc_packed_type {
	18	MMC_PACKED_NONE = 0,
	19	MMC_PACKED_WRITE,
	20	};
	21
	22	#define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE)
	23	#define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE)
	24
	25	struct mmc_packed {
	26	struct list_head list;
	27	u32 cmd_hdr[1024];
	28	unsigned int blocks;
	29	u8 nr_entries;
	30	u8 retries;
	31	s16 idx_failure;
	32	};
	33
97868a2b PF	34	struct mmc_queue_req {
	35	struct request *req;
	36	struct mmc_blk_request brq;
	37	struct scatterlist *sg;
	38	char *bounce_buf;
	39	struct scatterlist *bounce_sg;
	40	unsigned int bounce_sg_len;
ee8a43a5	41	struct mmc_async_req mmc_active;
ce39f9d1 SJ	42	enum mmc_packed_type cmd_type;
ce39f9d1 SJ	43	struct mmc_packed *packed;
97868a2b PF	44	};
97868a2b PF	45
1da177e4 LT	46	struct mmc_queue {
1da177e4 LT	47	struct mmc_card *card;
87598a2b	48	struct task_struct *thread;
1da177e4 LT	49	struct semaphore thread_sem;
1da177e4 LT	50	unsigned int flags;
2220eedf KD	51	#define MMC_QUEUE_SUSPENDED (1 << 0)
	52	#define MMC_QUEUE_NEW_REQUEST (1 << 1)
	53
1da177e4 LT	54	int (issue_fn)(struct mmc_queue , struct request *);
	55	void *data;
	56	struct request_queue *queue;
04296b7b	57	struct mmc_queue_req mqrq[2];
97868a2b	58	struct mmc_queue_req *mqrq_cur;
04296b7b	59	struct mmc_queue_req *mqrq_prev;
1da177e4 LT	60	};
1da177e4 LT	61
d09408ad AH	62	extern int mmc_init_queue(struct mmc_queue , struct mmc_card , spinlock_t *,
d09408ad AH	63	const char *);
1da177e4 LT	64	extern void mmc_cleanup_queue(struct mmc_queue *);
	65	extern void mmc_queue_suspend(struct mmc_queue *);
	66	extern void mmc_queue_resume(struct mmc_queue *);
	67
97868a2b PF	68	extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
	69	struct mmc_queue_req *);
	70	extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
	71	extern void mmc_queue_bounce_post(struct mmc_queue_req *);
98ccf149	72
ce39f9d1 SJ	73	extern int mmc_packed_init(struct mmc_queue , struct mmc_card );
	74	extern void mmc_packed_clean(struct mmc_queue *);
	75
1da177e4	76	#endif