1#ifndef MMC_QUEUE_H
 2#define MMC_QUEUE_H
 3
 4#define MMC_REQ_SPECIAL_MASK	(REQ_DISCARD | REQ_FLUSH)
 5
 6struct request;
 7struct task_struct;
 8
 9struct 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	int			retune_retry_done;
16};
17
18enum mmc_packed_type {
19	MMC_PACKED_NONE = 0,
20	MMC_PACKED_WRITE,
21};
22
23#define mmc_packed_cmd(type)	((type) != MMC_PACKED_NONE)
24#define mmc_packed_wr(type)	((type) == MMC_PACKED_WRITE)
25
26struct mmc_packed {
27	struct list_head	list;
28	u32			cmd_hdr[1024];
29	unsigned int		blocks;
30	u8			nr_entries;
31	u8			retries;
32	s16			idx_failure;
33};
34
35struct mmc_queue_req {
36	struct request		*req;
37	struct mmc_blk_request	brq;
38	struct scatterlist	*sg;
39	char			*bounce_buf;
40	struct scatterlist	*bounce_sg;
41	unsigned int		bounce_sg_len;
42	struct mmc_async_req	mmc_active;
43	enum mmc_packed_type	cmd_type;
44	struct mmc_packed	*packed;
45};
46
47struct mmc_queue {
48	struct mmc_card		*card;
49	struct task_struct	*thread;
50	struct semaphore	thread_sem;
51	unsigned int		flags;
52#define MMC_QUEUE_SUSPENDED	(1 << 0)
53#define MMC_QUEUE_NEW_REQUEST	(1 << 1)
54
55	int			(*issue_fn)(struct mmc_queue *, struct request *);
56	void			*data;
57	struct request_queue	*queue;
58	struct mmc_queue_req	mqrq[2];
59	struct mmc_queue_req	*mqrq_cur;
60	struct mmc_queue_req	*mqrq_prev;
61};
62
63extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
64			  const char *);
65extern void mmc_cleanup_queue(struct mmc_queue *);
66extern void mmc_queue_suspend(struct mmc_queue *);
67extern void mmc_queue_resume(struct mmc_queue *);
68
69extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
70				     struct mmc_queue_req *);
71extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
72extern void mmc_queue_bounce_post(struct mmc_queue_req *);
73
74extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
75extern void mmc_packed_clean(struct mmc_queue *);
76
77extern int mmc_access_rpmb(struct mmc_queue *);
78
79#endif