Release 4.7 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;
	
int			retune_retry_done;
};


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 *);

extern int mmc_access_rpmb(struct mmc_queue *);

#endif
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Directory: drivers/mmc/card

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