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gerrit-public.fairphone.software / kernel / msm / d1c87f16be063a8757813e383514f248b3b72efc / . / drivers / mmc / card / queue.h
blob: df1e87254a3d46dfb0482f5f8ad83b8cccd2fd5b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#ifndef MMC_QUEUE_H
2#define MMC_QUEUE_H
3
4struct request;
5struct task_struct;
6
Per Forlincb86e7b2011-07-09 17:12:36 -0400[diff] [blame]7struct mmc_blk_request {
8 struct mmc_request mrq;
9 struct mmc_command sbc;
10 struct mmc_command cmd;
11 struct mmc_command stop;
12 struct mmc_data data;
13};
14
Seungwon Jeon53f8f572012-09-27 15:00:26 +0200[diff] [blame]15enum mmc_packed_cmd {
16 MMC_PACKED_NONE = 0,
17 MMC_PACKED_WRITE,
18};
19
Per Forlincb86e7b2011-07-09 17:12:36 -0400[diff] [blame]20struct mmc_queue_req {
21 struct request *req;
22 struct mmc_blk_request brq;
23 struct scatterlist *sg;
24 char *bounce_buf;
25 struct scatterlist *bounce_sg;
26 unsigned int bounce_sg_len;
Per Forlin91fd00b2011-07-01 18:55:33 +0200[diff] [blame]27 struct mmc_async_req mmc_active;
Seungwon Jeon53f8f572012-09-27 15:00:26 +0200[diff] [blame]28 struct list_head packed_list;
29 u32 packed_cmd_hdr[128];
30 unsigned int packed_blocks;
31 enum mmc_packed_cmd packed_cmd;
32 int packed_retries;
33 int packed_fail_idx;
34 u8 packed_num;
Per Forlincb86e7b2011-07-09 17:12:36 -0400[diff] [blame]35};
36
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]37struct mmc_queue {
38 struct mmc_card *card;
Christoph Hellwig87598a22006-11-13 20:23:52 +0100[diff] [blame]39 struct task_struct *thread;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]40 struct semaphore thread_sem;
41 unsigned int flags;
Konstantin Dorfman69bd0fb2012-12-12 16:12:08 +0200[diff] [blame]42#define MMC_QUEUE_SUSPENDED (1 << 0)
43#define MMC_QUEUE_NEW_REQUEST (1 << 1)
44
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]45 int (*issue_fn)(struct mmc_queue *, struct request *);
46 void *data;
47 struct request_queue *queue;
Per Forlind07424b2011-07-01 18:55:31 +0200[diff] [blame]48 struct mmc_queue_req mqrq[2];
Per Forlincb86e7b2011-07-09 17:12:36 -0400[diff] [blame]49 struct mmc_queue_req *mqrq_cur;
Per Forlind07424b2011-07-01 18:55:31 +0200[diff] [blame]50 struct mmc_queue_req *mqrq_prev;
Tatyana Brokhman0cc76402012-10-07 09:52:16 +0200[diff] [blame]51 bool wr_packing_enabled;
52 int num_of_potential_packed_wr_reqs;
53 int num_wr_reqs_to_start_packing;
Maya Erez64d12462013-01-06 10:19:38 +0200[diff] [blame]54 bool no_pack_for_random;
Tatyana Brokhman09b010d2012-10-09 13:50:56 +0200[diff] [blame]55 int (*err_check_fn) (struct mmc_card *, struct mmc_async_req *);
56 void (*packed_test_fn) (struct request_queue *, struct mmc_queue_req *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]57};
58
Adrian Hunterd09408a2011-06-23 13:40:28 +0300[diff] [blame]59extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
60 const char *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]61extern void mmc_cleanup_queue(struct mmc_queue *);
Subhash Jadavanid1c87f12013-02-26 17:32:58 +0530[diff] [blame^]62extern int mmc_queue_suspend(struct mmc_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]63extern void mmc_queue_resume(struct mmc_queue *);
64
Per Forlincb86e7b2011-07-09 17:12:36 -0400[diff] [blame]65extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
66 struct mmc_queue_req *);
67extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
68extern void mmc_queue_bounce_post(struct mmc_queue_req *);
Pierre Ossman98ccf142007-05-12 00:26:16 +0200[diff] [blame]69
Tatyana Brokhman09b010d2012-10-09 13:50:56 +0200[diff] [blame]70extern void print_mmc_packing_stats(struct mmc_card *card);
71
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]72#endif