Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef MMC_QUEUE_H
2#define MMC_QUEUE_H
3
4#include <linux/types.h>
5#include <linux/blkdev.h>
6#include <linux/mmc/core.h>
7#include <linux/mmc/host.h>
8
9static inline bool mmc_req_is_special(struct request *req)
10{
11 return req &&
12 (req_op(req) == REQ_OP_FLUSH ||
13 req_op(req) == REQ_OP_DISCARD ||
14 req_op(req) == REQ_OP_SECURE_ERASE);
15}
16
17struct task_struct;
18struct mmc_blk_data;
19
20struct mmc_blk_request {
21 struct mmc_request mrq;
22 struct mmc_command sbc;
23 struct mmc_command cmd;
24 struct mmc_command stop;
25 struct mmc_data data;
26 int retune_retry_done;
27};
28
29struct mmc_queue_req {
30 struct request *req;
31 struct mmc_blk_request brq;
32 struct scatterlist *sg;
33 char *bounce_buf;
34 struct scatterlist *bounce_sg;
35 unsigned int bounce_sg_len;
36 struct mmc_async_req areq;
37 int task_id;
38};
39
40struct mmc_queue {
41 struct mmc_card *card;
42 struct task_struct *thread;
43 struct semaphore thread_sem;
44 bool suspended;
45 bool asleep;
46 struct mmc_blk_data *blkdata;
47 struct request_queue *queue;
48 struct mmc_queue_req *mqrq;
49 int qdepth;
50 int qcnt;
51 unsigned long qslots;
52};
53
54extern int mmc_queue_alloc_shared_queue(struct mmc_card *card);
55extern void mmc_queue_free_shared_queue(struct mmc_card *card);
56extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
57 const char *);
58extern void mmc_cleanup_queue(struct mmc_queue *);
59extern void mmc_queue_suspend(struct mmc_queue *);
60extern void mmc_queue_resume(struct mmc_queue *);
61
62extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
63 struct mmc_queue_req *);
64extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
65extern void mmc_queue_bounce_post(struct mmc_queue_req *);
66
67extern int mmc_access_rpmb(struct mmc_queue *);
68
69extern struct mmc_queue_req *mmc_queue_req_find(struct mmc_queue *,
70 struct request *);
71extern void mmc_queue_req_free(struct mmc_queue *, struct mmc_queue_req *);
72
73#endif