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15#ifndef QEMU_RAW_AIO_H
16#define QEMU_RAW_AIO_H
17
18#include "qemu/coroutine.h"
19#include "qemu/iov.h"
20
21
22#define QEMU_AIO_READ 0x0001
23#define QEMU_AIO_WRITE 0x0002
24#define QEMU_AIO_IOCTL 0x0004
25#define QEMU_AIO_FLUSH 0x0008
26#define QEMU_AIO_DISCARD 0x0010
27#define QEMU_AIO_WRITE_ZEROES 0x0020
28#define QEMU_AIO_COPY_RANGE 0x0040
29#define QEMU_AIO_TRUNCATE 0x0080
30#define QEMU_AIO_TYPE_MASK \
31 (QEMU_AIO_READ | \
32 QEMU_AIO_WRITE | \
33 QEMU_AIO_IOCTL | \
34 QEMU_AIO_FLUSH | \
35 QEMU_AIO_DISCARD | \
36 QEMU_AIO_WRITE_ZEROES | \
37 QEMU_AIO_COPY_RANGE | \
38 QEMU_AIO_TRUNCATE)
39
40
41#define QEMU_AIO_MISALIGNED 0x1000
42#define QEMU_AIO_BLKDEV 0x2000
43
44
45
46#ifdef CONFIG_LINUX_AIO
47typedef struct LinuxAioState LinuxAioState;
48LinuxAioState *laio_init(Error **errp);
49void laio_cleanup(LinuxAioState *s);
50int coroutine_fn laio_co_submit(BlockDriverState *bs, LinuxAioState *s, int fd,
51 uint64_t offset, QEMUIOVector *qiov, int type);
52BlockAIOCB *laio_submit(BlockDriverState *bs, LinuxAioState *s, int fd,
53 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
54 BlockCompletionFunc *cb, void *opaque, int type);
55void laio_detach_aio_context(LinuxAioState *s, AioContext *old_context);
56void laio_attach_aio_context(LinuxAioState *s, AioContext *new_context);
57void laio_io_plug(BlockDriverState *bs, LinuxAioState *s);
58void laio_io_unplug(BlockDriverState *bs, LinuxAioState *s);
59#endif
60
61#ifdef _WIN32
62typedef struct QEMUWin32AIOState QEMUWin32AIOState;
63QEMUWin32AIOState *win32_aio_init(void);
64void win32_aio_cleanup(QEMUWin32AIOState *aio);
65int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile);
66BlockAIOCB *win32_aio_submit(BlockDriverState *bs,
67 QEMUWin32AIOState *aio, HANDLE hfile,
68 uint64_t offset, uint64_t bytes, QEMUIOVector *qiov,
69 BlockCompletionFunc *cb, void *opaque, int type);
70void win32_aio_detach_aio_context(QEMUWin32AIOState *aio,
71 AioContext *old_context);
72void win32_aio_attach_aio_context(QEMUWin32AIOState *aio,
73 AioContext *new_context);
74#endif
75
76#endif
77