include/minix/bdev.h

   1 #ifndef _MINIX_BDEV_H
   2 #define _MINIX_BDEV_H
   3
   4 /* Common API. */
   5 extern void bdev_driver(dev_t dev, char *label);
   6
   7 /* Synchronous API. */
   8 extern int bdev_open(dev_t dev, int access);
   9 extern int bdev_close(dev_t dev);
  10
  11 extern ssize_t bdev_read(dev_t dev, u64_t pos, char *buf, size_t count,
  12         int flags);
  13 extern ssize_t bdev_write(dev_t dev, u64_t pos, char *buf, size_t count,
  14         int flags);
  15 extern ssize_t bdev_gather(dev_t dev, u64_t pos, iovec_t *vec, int count,
  16         int flags);
  17 extern ssize_t bdev_scatter(dev_t dev, u64_t pos, iovec_t *vec, int count,
  18         int flags);
  19 extern int bdev_ioctl(dev_t dev, int request, void *buf,
  20         endpoint_t user_endpt);
  21
  22 /* Asynchronous API. */
  23 typedef int bdev_id_t;
  24 typedef void *bdev_param_t;
  25
  26 typedef void (*bdev_callback_t)(dev_t dev, bdev_id_t id, bdev_param_t param,
  27         int result);
  28
  29 extern void bdev_flush_asyn(dev_t dev);
  30
  31 extern bdev_id_t bdev_read_asyn(dev_t dev, u64_t pos, char *buf, size_t count,
  32         int flags, bdev_callback_t callback, bdev_param_t param);
  33 extern bdev_id_t bdev_write_asyn(dev_t dev, u64_t pos, char *buf, size_t count,
  34         int flags, bdev_callback_t callback, bdev_param_t param);
  35 extern bdev_id_t bdev_gather_asyn(dev_t dev, u64_t pos, iovec_t *vec,
  36         int count, int flags, bdev_callback_t callback, bdev_param_t param);
  37 extern bdev_id_t bdev_scatter_asyn(dev_t dev, u64_t pos, iovec_t *vec,
  38         int count, int flags, bdev_callback_t callback, bdev_param_t param);
  39 extern bdev_id_t bdev_ioctl_asyn(dev_t dev, int request, void *buf,
  40         endpoint_t user_endpt, bdev_callback_t callback, bdev_param_t param);
  41
  42 extern int bdev_wait_asyn(bdev_id_t id);
  43
  44 extern void bdev_reply_asyn(message *m);
  45
  46 #endif /* _MINIX_BDEV_H */