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16#ifndef QEMU_RAW_AIO_H
17#define QEMU_RAW_AIO_H
18
19#include "block/aio.h"
20#include "qemu/coroutine.h"
21#include "qemu/iov.h"
22
23
24#define QEMU_AIO_READ 0x0001
25#define QEMU_AIO_WRITE 0x0002
26#define QEMU_AIO_IOCTL 0x0004
27#define QEMU_AIO_FLUSH 0x0008
28#define QEMU_AIO_DISCARD 0x0010
29#define QEMU_AIO_WRITE_ZEROES 0x0020
30#define QEMU_AIO_COPY_RANGE 0x0040
31#define QEMU_AIO_TRUNCATE 0x0080
32#define QEMU_AIO_TYPE_MASK \
33 (QEMU_AIO_READ | \
34 QEMU_AIO_WRITE | \
35 QEMU_AIO_IOCTL | \
36 QEMU_AIO_FLUSH | \
37 QEMU_AIO_DISCARD | \
38 QEMU_AIO_WRITE_ZEROES | \
39 QEMU_AIO_COPY_RANGE | \
40 QEMU_AIO_TRUNCATE)
41
42
43#define QEMU_AIO_MISALIGNED 0x1000
44#define QEMU_AIO_BLKDEV 0x2000
45#define QEMU_AIO_NO_FALLBACK 0x4000
46
47
48
49#ifdef CONFIG_LINUX_AIO
50typedef struct LinuxAioState LinuxAioState;
51LinuxAioState *laio_init(Error **errp);
52void laio_cleanup(LinuxAioState *s);
53int coroutine_fn laio_co_submit(BlockDriverState *bs, LinuxAioState *s, int fd,
54 uint64_t offset, QEMUIOVector *qiov, int type,
55 uint64_t dev_max_batch);
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 uint64_t dev_max_batch);
61#endif
62
63#ifdef CONFIG_LINUX_IO_URING
64typedef struct LuringState LuringState;
65LuringState *luring_init(Error **errp);
66void luring_cleanup(LuringState *s);
67int coroutine_fn luring_co_submit(BlockDriverState *bs, LuringState *s, int fd,
68 uint64_t offset, QEMUIOVector *qiov, int type);
69void luring_detach_aio_context(LuringState *s, AioContext *old_context);
70void luring_attach_aio_context(LuringState *s, AioContext *new_context);
71void luring_io_plug(BlockDriverState *bs, LuringState *s);
72void luring_io_unplug(BlockDriverState *bs, LuringState *s);
73#endif
74
75#ifdef _WIN32
76typedef struct QEMUWin32AIOState QEMUWin32AIOState;
77QEMUWin32AIOState *win32_aio_init(void);
78void win32_aio_cleanup(QEMUWin32AIOState *aio);
79int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile);
80BlockAIOCB *win32_aio_submit(BlockDriverState *bs,
81 QEMUWin32AIOState *aio, HANDLE hfile,
82 uint64_t offset, uint64_t bytes, QEMUIOVector *qiov,
83 BlockCompletionFunc *cb, void *opaque, int type);
84void win32_aio_detach_aio_context(QEMUWin32AIOState *aio,
85 AioContext *old_context);
86void win32_aio_attach_aio_context(QEMUWin32AIOState *aio,
87 AioContext *new_context);
88#endif
89
90#endif
91