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
  21 /* Asynchronous API. */
  22 typedef int bdev_id_t;
  23 typedef void *bdev_param_t;
  24
  25 typedef void (*bdev_callback_t)(dev_t dev, bdev_id_t id, bdev_param_t param,
  26         int result);
  27
  28 extern void bdev_flush_asyn(dev_t dev);
  29
  30 extern bdev_id_t bdev_read_asyn(dev_t dev, u64_t pos, char *buf, size_t count,
  31         int flags, bdev_callback_t callback, bdev_param_t param);
  32 extern bdev_id_t bdev_write_asyn(dev_t dev, u64_t pos, char *buf, size_t count,
  33         int flags, bdev_callback_t callback, bdev_param_t param);
  34 extern bdev_id_t bdev_gather_asyn(dev_t dev, u64_t pos, iovec_t *vec,
  35         int count, int flags, bdev_callback_t callback, bdev_param_t param);
  36 extern bdev_id_t bdev_scatter_asyn(dev_t dev, u64_t pos, iovec_t *vec,
  37         int count, int flags, bdev_callback_t callback, bdev_param_t param);
  38 extern bdev_id_t bdev_ioctl_asyn(dev_t dev, int request, void *buf,
  39         bdev_callback_t callback, bdev_param_t param);
  40
  41 extern int bdev_wait_asyn(bdev_id_t id);
  42
  43 extern void bdev_reply_asyn(message *m);
  44
  45 #endif /* _MINIX_BDEV_H */