blob: f1ba6df2663d428f92ebfdced8a2a3714c0ddfbd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#ifndef MMC_QUEUE_H
#define MMC_QUEUE_H
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;
};
enum mmc_packed_cmd {
MMC_PACKED_NONE = 0,
MMC_PACKED_WR_HDR,
MMC_PACKED_WRITE,
MMC_PACKED_READ,
};
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;
struct list_head packed_list;
u32 packed_cmd_hdr[128];
unsigned int packed_blocks;
enum mmc_packed_cmd packed_cmd;
int packed_fail_idx;
u8 packed_num;
};
struct mmc_queue {
struct mmc_card *card;
struct task_struct *thread;
struct semaphore thread_sem;
unsigned int flags;
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;
/* Jiffies until which disable packed command. */
unsigned long nopacked_period;
};
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 *);
#define IS_RT_CLASS_REQ(x) \
(IOPRIO_PRIO_CLASS(req_get_ioprio(x)) == IOPRIO_CLASS_RT)
static inline void mmc_set_nopacked_period(struct mmc_queue *mq,
unsigned long nopacked_jiffies)
{
mq->nopacked_period = jiffies + nopacked_jiffies;
smp_wmb();
}
static inline int mmc_is_nopacked_period(struct mmc_queue *mq)
{
smp_rmb();
return (int)time_is_after_jiffies(mq->nopacked_period);
}
#endif
|
