19ef91a67SChristoph Hellwig /* 29f8540ecSPaolo Bonzini * Declarations for AIO in the raw protocol 39ef91a67SChristoph Hellwig * 49ef91a67SChristoph Hellwig * Copyright IBM, Corp. 2008 59ef91a67SChristoph Hellwig * 69ef91a67SChristoph Hellwig * Authors: 79ef91a67SChristoph Hellwig * Anthony Liguori <aliguori@us.ibm.com> 89ef91a67SChristoph Hellwig * 99ef91a67SChristoph Hellwig * This work is licensed under the terms of the GNU GPL, version 2. See 109ef91a67SChristoph Hellwig * the COPYING file in the top-level directory. 119ef91a67SChristoph Hellwig * 126b620ca3SPaolo Bonzini * Contributions after 2012-01-13 are licensed under the terms of the 136b620ca3SPaolo Bonzini * GNU GPL, version 2 or (at your option) any later version. 149ef91a67SChristoph Hellwig */ 159f8540ecSPaolo Bonzini #ifndef QEMU_RAW_AIO_H 169f8540ecSPaolo Bonzini #define QEMU_RAW_AIO_H 179ef91a67SChristoph Hellwig 189ef91a67SChristoph Hellwig /* AIO request types */ 199ef91a67SChristoph Hellwig #define QEMU_AIO_READ 0x0001 209ef91a67SChristoph Hellwig #define QEMU_AIO_WRITE 0x0002 219ef91a67SChristoph Hellwig #define QEMU_AIO_IOCTL 0x0004 22b2e12bc6SChristoph Hellwig #define QEMU_AIO_FLUSH 0x0008 238238010bSPaolo Bonzini #define QEMU_AIO_DISCARD 0x0010 2497a2ae34SPaolo Bonzini #define QEMU_AIO_WRITE_ZEROES 0x0020 259ef91a67SChristoph Hellwig #define QEMU_AIO_TYPE_MASK \ 268238010bSPaolo Bonzini (QEMU_AIO_READ|QEMU_AIO_WRITE|QEMU_AIO_IOCTL|QEMU_AIO_FLUSH| \ 2797a2ae34SPaolo Bonzini QEMU_AIO_DISCARD|QEMU_AIO_WRITE_ZEROES) 289ef91a67SChristoph Hellwig 299ef91a67SChristoph Hellwig /* AIO flags */ 309ef91a67SChristoph Hellwig #define QEMU_AIO_MISALIGNED 0x1000 318238010bSPaolo Bonzini #define QEMU_AIO_BLKDEV 0x2000 329ef91a67SChristoph Hellwig 339ef91a67SChristoph Hellwig 345c6c3a6cSChristoph Hellwig /* linux-aio.c - Linux native implementation */ 359f8540ecSPaolo Bonzini #ifdef CONFIG_LINUX_AIO 365c6c3a6cSChristoph Hellwig void *laio_init(void); 37abd269b7SStefan Hajnoczi void laio_cleanup(void *s); 387c84b1b8SMarkus Armbruster BlockAIOCB *laio_submit(BlockDriverState *bs, void *aio_ctx, int fd, 395c6c3a6cSChristoph Hellwig int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, 40097310b5SMarkus Armbruster BlockCompletionFunc *cb, void *opaque, int type); 41c2f3426cSStefan Hajnoczi void laio_detach_aio_context(void *s, AioContext *old_context); 42c2f3426cSStefan Hajnoczi void laio_attach_aio_context(void *s, AioContext *new_context); 431b3abdccSMing Lei void laio_io_plug(BlockDriverState *bs, void *aio_ctx); 441b3abdccSMing Lei int laio_io_unplug(BlockDriverState *bs, void *aio_ctx, bool unplug); 459f8540ecSPaolo Bonzini #endif 465c6c3a6cSChristoph Hellwig 47a2736526SPaolo Bonzini #ifdef _WIN32 48a2736526SPaolo Bonzini typedef struct QEMUWin32AIOState QEMUWin32AIOState; 49a2736526SPaolo Bonzini QEMUWin32AIOState *win32_aio_init(void); 5099cc5989SStefan Hajnoczi void win32_aio_cleanup(QEMUWin32AIOState *aio); 51a2736526SPaolo Bonzini int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile); 527c84b1b8SMarkus Armbruster BlockAIOCB *win32_aio_submit(BlockDriverState *bs, 53a2736526SPaolo Bonzini QEMUWin32AIOState *aio, HANDLE hfile, 54a2736526SPaolo Bonzini int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, 55097310b5SMarkus Armbruster BlockCompletionFunc *cb, void *opaque, int type); 5685ebd381SStefan Hajnoczi void win32_aio_detach_aio_context(QEMUWin32AIOState *aio, 5785ebd381SStefan Hajnoczi AioContext *old_context); 5885ebd381SStefan Hajnoczi void win32_aio_attach_aio_context(QEMUWin32AIOState *aio, 5985ebd381SStefan Hajnoczi AioContext *new_context); 60a2736526SPaolo Bonzini #endif 61a2736526SPaolo Bonzini 629f8540ecSPaolo Bonzini #endif /* QEMU_RAW_AIO_H */ 63