Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef MMC_QUEUE_H
2#define MMC_QUEUE_H
3
4static inline bool mmc_req_is_special(struct request *req)
5{
6 return req &&
7 (req_op(req) == REQ_OP_FLUSH ||
8 req_op(req) == REQ_OP_DISCARD ||
9 req_op(req) == REQ_OP_SECURE_ERASE);
10}
11
12struct request;
13struct task_struct;
14
15struct mmc_blk_request {
16 struct mmc_request mrq;
17 struct mmc_command sbc;
18 struct mmc_command cmd;
19 struct mmc_command stop;
20 struct mmc_data data;
21 int retune_retry_done;
22};
23
24enum mmc_packed_type {
25 MMC_PACKED_NONE = 0,
26 MMC_PACKED_WRITE,
27};
28
29#define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE)
30#define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE)
31
32struct mmc_packed {
33 struct list_head list;
34 u32 cmd_hdr[1024];
35 unsigned int blocks;
36 u8 nr_entries;
37 u8 retries;
38 s16 idx_failure;
39};
40
41struct mmc_queue_req {
42 struct request *req;
43 struct mmc_blk_request brq;
44 struct scatterlist *sg;
45 char *bounce_buf;
46 struct scatterlist *bounce_sg;
47 unsigned int bounce_sg_len;
48 struct mmc_async_req mmc_active;
49 enum mmc_packed_type cmd_type;
50 struct mmc_packed *packed;
51};
52
53struct mmc_queue {
54 struct mmc_card *card;
55 struct task_struct *thread;
56 struct semaphore thread_sem;
57 unsigned int flags;
58#define MMC_QUEUE_SUSPENDED (1 << 0)
59#define MMC_QUEUE_NEW_REQUEST (1 << 1)
60
61 int (*issue_fn)(struct mmc_queue *, struct request *);
62 void *data;
63 struct request_queue *queue;
64 struct mmc_queue_req mqrq[2];
65 struct mmc_queue_req *mqrq_cur;
66 struct mmc_queue_req *mqrq_prev;
67};
68
69extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
70 const char *);
71extern void mmc_cleanup_queue(struct mmc_queue *);
72extern void mmc_queue_suspend(struct mmc_queue *);
73extern void mmc_queue_resume(struct mmc_queue *);
74
75extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
76 struct mmc_queue_req *);
77extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
78extern void mmc_queue_bounce_post(struct mmc_queue_req *);
79
80extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
81extern void mmc_packed_clean(struct mmc_queue *);
82
83extern int mmc_access_rpmb(struct mmc_queue *);
84
85#endif