drivers/mmc/card/queue.h

   1 #ifndef MMC_QUEUE_H
   2 #define MMC_QUEUE_H
   3
   4 struct request;
   5 struct task_struct;
   6
   7 struct 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
  15 struct mmc_queue_req {
  16         struct request          *req;
  17         struct mmc_blk_request  brq;
  18         struct scatterlist      *sg;
  19         char                    *bounce_buf;
  20         struct scatterlist      *bounce_sg;
  21         unsigned int            bounce_sg_len;
  22         struct mmc_async_req    mmc_active;
  23 };
  24
  25 struct mmc_queue {
  26         struct mmc_card         *card;
  27         struct task_struct      *thread;
  28         struct semaphore        thread_sem;
  29         unsigned int            flags;
  30         int                     (*issue_fn)(struct mmc_queue *, struct request *);
  31         void                    *data;
  32         struct request_queue    *queue;
  33         struct mmc_queue_req    mqrq[2];
  34         struct mmc_queue_req    *mqrq_cur;
  35         struct mmc_queue_req    *mqrq_prev;
  36 };
  37
  38 extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
  39                           const char *);
  40 extern void mmc_cleanup_queue(struct mmc_queue *);
  41 extern void mmc_queue_suspend(struct mmc_queue *);
  42 extern void mmc_queue_resume(struct mmc_queue *);
  43
  44 extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
  45                                      struct mmc_queue_req *);
  46 extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
  47 extern void mmc_queue_bounce_post(struct mmc_queue_req *);
  48
  49 #endif