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 };
  23
  24 struct mmc_queue {
  25         struct mmc_card         *card;
  26         struct task_struct      *thread;
  27         struct semaphore        thread_sem;
  28         unsigned int            flags;
  29         int                     (*issue_fn)(struct mmc_queue *, struct request *);
  30         void                    *data;
  31         struct request_queue    *queue;
  32         struct mmc_queue_req    mqrq[1];
  33         struct mmc_queue_req    *mqrq_cur;
  34 };
  35
  36 extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
  37                           const char *);
  38 extern void mmc_cleanup_queue(struct mmc_queue *);
  39 extern void mmc_queue_suspend(struct mmc_queue *);
  40 extern void mmc_queue_resume(struct mmc_queue *);
  41
  42 extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
  43                                      struct mmc_queue_req *);
  44 extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
  45 extern void mmc_queue_bounce_post(struct mmc_queue_req *);
  46
  47 #endif