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libbdev: extended version

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This version of libbdev support asynchronous communication,
recovery after driver restarts, and retrying of failed transfer
operations.
This commit is contained in:
David van Moolenbroek
2011-12-05 10:53:57 +01:00
parent 9221586f37
commit ed007ca416
11 changed files with 989 additions and 55 deletions
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32
common/include/minix/bdev.h
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@@ -1,8 +1,10 @@
#ifndef __MINIX_BDEV_H
#define __MINIX_BDEV_H
#ifndef _MINIX_BDEV_H
#define _MINIX_BDEV_H
/* Common API. */
extern void bdev_driver(dev_t dev, char *label);
/* Synchronous API. */
extern int bdev_open(dev_t dev, int access);
extern int bdev_close(dev_t dev);
@@ -16,4 +18,28 @@ extern ssize_t bdev_scatter(dev_t dev, u64_t pos, iovec_t *vec, int count,
int flags);
extern int bdev_ioctl(dev_t dev, int request, void *buf);
#endif /* __MINIX_BDEV_H */
/* Asynchronous API. */
typedef int bdev_id_t;
typedef void *bdev_param_t;
typedef void (*bdev_callback_t)(dev_t dev, bdev_id_t id, bdev_param_t param,
int result);
extern void bdev_flush_asyn(dev_t dev);
extern bdev_id_t bdev_read_asyn(dev_t dev, u64_t pos, char *buf, size_t count,
int flags, bdev_callback_t callback, bdev_param_t param);
extern bdev_id_t bdev_write_asyn(dev_t dev, u64_t pos, char *buf, size_t count,
int flags, bdev_callback_t callback, bdev_param_t param);
extern bdev_id_t bdev_gather_asyn(dev_t dev, u64_t pos, iovec_t *vec,
int count, int flags, bdev_callback_t callback, bdev_param_t param);
extern bdev_id_t bdev_scatter_asyn(dev_t dev, u64_t pos, iovec_t *vec,
int count, int flags, bdev_callback_t callback, bdev_param_t param);
extern bdev_id_t bdev_ioctl_asyn(dev_t dev, int request, void *buf,
bdev_callback_t callback, bdev_param_t param);
extern int bdev_wait_asyn(bdev_id_t id);
extern void bdev_reply_asyn(message *m);
#endif /* _MINIX_BDEV_H */