1 #ifndef MMC_QUEUE_H
2 #define MMC_QUEUE_H
3 
4 #define MMC_REQ_SPECIAL_MASK	(REQ_DISCARD | REQ_FLUSH)
5 
6 struct request;
7 struct task_struct;
8 
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 	int			retune_retry_done;
16 };
17 
18 enum 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 
26 struct 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 
35 struct 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 
47 struct 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 
63 extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
64 			  const char *);
65 extern void mmc_cleanup_queue(struct mmc_queue *);
66 extern void mmc_queue_suspend(struct mmc_queue *);
67 extern void mmc_queue_resume(struct mmc_queue *);
68 
69 extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
70 				     struct mmc_queue_req *);
71 extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
72 extern void mmc_queue_bounce_post(struct mmc_queue_req *);
73 
74 extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
75 extern void mmc_packed_clean(struct mmc_queue *);
76 
77 extern int mmc_access_rpmb(struct mmc_queue *);
78 
79 #endif
80