74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
|
#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_WRITE,
|
||
|
|
};
|
||
|
|
|
||
|
|
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_retries;
|
||
|
|
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;
|
||
|
|
#define MMC_QUEUE_SUSPENDED (1 << 0)
|
||
|
|
#define MMC_QUEUE_NEW_REQUEST (1 << 1)
|
||
|
|
#define MMC_QUEUE_URGENT_REQUEST (1 << 2)
|
||
|
|
|
||
|
|
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;
|
||
|
|
bool wr_packing_enabled;
|
||
|
|
int num_of_potential_packed_wr_reqs;
|
||
|
|
int num_wr_reqs_to_start_packing;
|
||
|
|
bool no_pack_for_random;
|
||
|
|
int (*err_check_fn) (struct mmc_card *, struct mmc_async_req *);
|
||
|
|
void (*packed_test_fn) (struct request_queue *, struct mmc_queue_req *);
|
||
|
|
};
|
||
|
|
|
||
|
|
extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
|
||
|
|
const char *);
|
||
|
|
extern void mmc_cleanup_queue(struct mmc_queue *);
|
||
|
|
extern int 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 *);
|
||
|
|
|
||
|
|
extern void print_mmc_packing_stats(struct mmc_card *card);
|
||
|
|
|
||
|
|
#endif
|