usb-bsd: convert to QOM
[qemu.git] / block / raw-posix-aio.h
1 /*
2 * QEMU Posix block I/O backend AIO support
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 *
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.
14 */
15 #ifndef QEMU_RAW_POSIX_AIO_H
16 #define QEMU_RAW_POSIX_AIO_H
17
18 /* AIO request types */
19 #define QEMU_AIO_READ 0x0001
20 #define QEMU_AIO_WRITE 0x0002
21 #define QEMU_AIO_IOCTL 0x0004
22 #define QEMU_AIO_FLUSH 0x0008
23 #define QEMU_AIO_TYPE_MASK \
24 (QEMU_AIO_READ|QEMU_AIO_WRITE|QEMU_AIO_IOCTL|QEMU_AIO_FLUSH)
25
26 /* AIO flags */
27 #define QEMU_AIO_MISALIGNED 0x1000
28
29
30 /* posix-aio-compat.c - thread pool based implementation */
31 int paio_init(void);
32 BlockDriverAIOCB *paio_submit(BlockDriverState *bs, int fd,
33 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
34 BlockDriverCompletionFunc *cb, void *opaque, int type);
35 BlockDriverAIOCB *paio_ioctl(BlockDriverState *bs, int fd,
36 unsigned long int req, void *buf,
37 BlockDriverCompletionFunc *cb, void *opaque);
38
39 /* linux-aio.c - Linux native implementation */
40 void *laio_init(void);
41 BlockDriverAIOCB *laio_submit(BlockDriverState *bs, void *aio_ctx, int fd,
42 int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
43 BlockDriverCompletionFunc *cb, void *opaque, int type);
44
45 #endif /* QEMU_RAW_POSIX_AIO_H */