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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#define QEMU_AIO_NO_FALLBACK 0x4000
44
45
46
47#ifdef CONFIG_LINUX_AIO
48typedef struct LinuxAioState LinuxAioState;
49LinuxAioState *laio_init(Error **errp);
50void laio_cleanup(LinuxAioState *s);
51int coroutine_fn laio_co_submit(BlockDriverState *bs, LinuxAioState *s, int fd,
52 uint64_t offset, QEMUIOVector *qiov, int type);
53BlockAIOCB *laio_submit(BlockDriverState *bs, LinuxAioState *s, int fd,
54 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
55 BlockCompletionFunc *cb, void *opaque, int type);
56void laio_detach_aio_context(LinuxAioState *s, AioContext *old_context);
57void laio_attach_aio_context(LinuxAioState *s, AioContext *new_context);
58void laio_io_plug(BlockDriverState *bs, LinuxAioState *s);
59void laio_io_unplug(BlockDriverState *bs, LinuxAioState *s);
60#endif
61
62#ifdef _WIN32
63typedef struct QEMUWin32AIOState QEMUWin32AIOState;
64QEMUWin32AIOState *win32_aio_init(void);
65void win32_aio_cleanup(QEMUWin32AIOState *aio);
66int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile);
67BlockAIOCB *win32_aio_submit(BlockDriverState *bs,
68 QEMUWin32AIOState *aio, HANDLE hfile,
69 uint64_t offset, uint64_t bytes, QEMUIOVector *qiov,
70 BlockCompletionFunc *cb, void *opaque, int type);
71void win32_aio_detach_aio_context(QEMUWin32AIOState *aio,
72 AioContext *old_context);
73void win32_aio_attach_aio_context(QEMUWin32AIOState *aio,
74 AioContext *new_context);
75#endif
76
77#endif
78