projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 9ef91a67 | 1 | /* |
| 9f8540ec | 2 | * Declarations for AIO in the raw protocol |
| 9ef91a67 CH |
3 | * |
| 4 | * Copyright IBM, Corp. 2008 | |
| 5 | * | |
| 6 | * Authors: | |
| 7 | * Anthony Liguori <aliguori@us.ibm.com> | |
| 8 | * | |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
| 10 | * the COPYING file in the top-level directory. | |
| 11 | * | |
| 6b620ca3 PB |
12 | * Contributions after 2012-01-13 are licensed under the terms of the |
| 13 | * GNU GPL, version 2 or (at your option) any later version. | |
| 9ef91a67 | 14 | */ |
| 9f8540ec PB |
15 | #ifndef QEMU_RAW_AIO_H |
| 16 | #define QEMU_RAW_AIO_H | |
| 9ef91a67 | 17 | |
| 2174f12b | 18 | #include "qemu/coroutine.h" |
| daf015ef MA |
19 | #include "qemu/iov.h" |
| 20 | ||
| 9ef91a67 CH |
21 | /* AIO request types */ |
| 22 | #define QEMU_AIO_READ 0x0001 | |
| 23 | #define QEMU_AIO_WRITE 0x0002 | |
| 24 | #define QEMU_AIO_IOCTL 0x0004 | |
| b2e12bc6 | 25 | #define QEMU_AIO_FLUSH 0x0008 |
| 8238010b | 26 | #define QEMU_AIO_DISCARD 0x0010 |
| 97a2ae34 | 27 | #define QEMU_AIO_WRITE_ZEROES 0x0020 |
| 9ef91a67 | 28 | #define QEMU_AIO_TYPE_MASK \ |
| 8238010b | 29 | (QEMU_AIO_READ|QEMU_AIO_WRITE|QEMU_AIO_IOCTL|QEMU_AIO_FLUSH| \ |
| 97a2ae34 | 30 | QEMU_AIO_DISCARD|QEMU_AIO_WRITE_ZEROES) |
| 9ef91a67 CH |
31 | |
| 32 | /* AIO flags */ | |
| 33 | #define QEMU_AIO_MISALIGNED 0x1000 | |
| 8238010b | 34 | #define QEMU_AIO_BLKDEV 0x2000 |
| 9ef91a67 CH |
35 | |
| 36 | ||
| 5c6c3a6c | 37 | /* linux-aio.c - Linux native implementation */ |
| 9f8540ec | 38 | #ifdef CONFIG_LINUX_AIO |
| dd7f7ed1 PB |
39 | typedef struct LinuxAioState LinuxAioState; |
| 40 | LinuxAioState *laio_init(void); | |
| 41 | void laio_cleanup(LinuxAioState *s); | |
| 2174f12b | 42 | int coroutine_fn laio_co_submit(BlockDriverState *bs, LinuxAioState *s, int fd, |
| 9d52aa3c | 43 | uint64_t offset, QEMUIOVector *qiov, int type); |
| dd7f7ed1 | 44 | BlockAIOCB *laio_submit(BlockDriverState *bs, LinuxAioState *s, int fd, |
| 5c6c3a6c | 45 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
| 097310b5 | 46 | BlockCompletionFunc *cb, void *opaque, int type); |
| dd7f7ed1 PB |
47 | void laio_detach_aio_context(LinuxAioState *s, AioContext *old_context); |
| 48 | void laio_attach_aio_context(LinuxAioState *s, AioContext *new_context); | |
| 49 | void laio_io_plug(BlockDriverState *bs, LinuxAioState *s); | |
| 50 | void laio_io_unplug(BlockDriverState *bs, LinuxAioState *s); | |
| 9f8540ec | 51 | #endif |
| 5c6c3a6c | 52 | |
| a2736526 PB |
53 | #ifdef _WIN32 |
| 54 | typedef struct QEMUWin32AIOState QEMUWin32AIOState; | |
| 55 | QEMUWin32AIOState *win32_aio_init(void); | |
| 99cc5989 | 56 | void win32_aio_cleanup(QEMUWin32AIOState *aio); |
| a2736526 | 57 | int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile); |
| 7c84b1b8 | 58 | BlockAIOCB *win32_aio_submit(BlockDriverState *bs, |
| a2736526 PB |
59 | QEMUWin32AIOState *aio, HANDLE hfile, |
| 60 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, | |
| 097310b5 | 61 | BlockCompletionFunc *cb, void *opaque, int type); |
| 85ebd381 SH |
62 | void win32_aio_detach_aio_context(QEMUWin32AIOState *aio, |
| 63 | AioContext *old_context); | |
| 64 | void win32_aio_attach_aio_context(QEMUWin32AIOState *aio, | |
| 65 | AioContext *new_context); | |
| a2736526 PB |
66 | #endif |
| 67 | ||
| 9f8540ec | 68 | #endif /* QEMU_RAW_AIO_H */ |