1 #ifndef MMC_QUEUE_H 2 #define MMC_QUEUE_H 3 4 #define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH) 5 6 struct request; 7 struct task_struct; 8 9 struct mmc_blk_request { 10 struct mmc_request mrq; 11 struct mmc_command sbc; 12 struct mmc_command cmd; 13 struct mmc_command stop; 14 struct mmc_data data; 15 }; 16 17 enum mmc_packed_type { 18 MMC_PACKED_NONE = 0, 19 MMC_PACKED_WRITE, 20 }; 21 22 #define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE) 23 #define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE) 24 25 struct mmc_packed { 26 struct list_head list; 27 __le32 cmd_hdr[1024]; 28 unsigned int blocks; 29 u8 nr_entries; 30 u8 retries; 31 s16 idx_failure; 32 }; 33 34 struct mmc_queue_req { 35 struct request *req; 36 struct mmc_blk_request brq; 37 struct scatterlist *sg; 38 char *bounce_buf; 39 struct scatterlist *bounce_sg; 40 unsigned int bounce_sg_len; 41 struct mmc_async_req mmc_active; 42 enum mmc_packed_type cmd_type; 43 struct mmc_packed *packed; 44 }; 45 46 struct mmc_queue { 47 struct mmc_card *card; 48 struct task_struct *thread; 49 struct semaphore thread_sem; 50 unsigned int flags; 51 #define MMC_QUEUE_SUSPENDED (1 << 0) 52 #define MMC_QUEUE_NEW_REQUEST (1 << 1) 53 54 int (*issue_fn)(struct mmc_queue *, struct request *); 55 void *data; 56 struct request_queue *queue; 57 struct mmc_queue_req mqrq[2]; 58 struct mmc_queue_req *mqrq_cur; 59 struct mmc_queue_req *mqrq_prev; 60 #ifdef CONFIG_MMC_SIMULATE_MAX_SPEED 61 atomic_t max_write_speed; 62 atomic_t max_read_speed; 63 atomic_t cache_size; 64 /* i/o tracking */ 65 atomic_long_t cache_used; 66 unsigned long cache_jiffies; 67 #endif 68 }; 69 70 extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *, 71 const char *); 72 extern void mmc_cleanup_queue(struct mmc_queue *); 73 extern void mmc_queue_suspend(struct mmc_queue *); 74 extern void mmc_queue_resume(struct mmc_queue *); 75 76 extern unsigned int mmc_queue_map_sg(struct mmc_queue *, 77 struct mmc_queue_req *); 78 extern void mmc_queue_bounce_pre(struct mmc_queue_req *); 79 extern void mmc_queue_bounce_post(struct mmc_queue_req *); 80 81 extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *); 82 extern void mmc_packed_clean(struct mmc_queue *); 83 84 extern int mmc_access_rpmb(struct mmc_queue *); 85 86 #endif 87