projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| bd322087 AL |
1 | /* |
| 2 | * Virtio Support | |
| 3 | * | |
| 4 | * Copyright IBM, Corp. 2007-2008 | |
| 5 | * | |
| 6 | * Authors: | |
| 7 | * Anthony Liguori <aliguori@us.ibm.com> | |
| 8 | * Rusty Russell <rusty@rustcorp.com.au> | |
| 9 | * | |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
| 11 | * the COPYING file in the top-level directory. | |
| 12 | * | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef _QEMU_VIRTIO_BALLOON_H | |
| 16 | #define _QEMU_VIRTIO_BALLOON_H | |
| 17 | ||
| 18 | #include "virtio.h" | |
| 19 | #include "pci.h" | |
| 20 | ||
| 21 | /* from Linux's linux/virtio_balloon.h */ | |
| 22 | ||
| 23 | /* The ID for virtio_balloon */ | |
| 24 | #define VIRTIO_ID_BALLOON 5 | |
| 25 | ||
| 26 | /* The feature bitmap for virtio balloon */ | |
| 27 | #define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */ | |
| 625a5bef | 28 | #define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory stats virtqueue */ |
| bd322087 AL |
29 | |
| 30 | /* Size of a PFN in the balloon interface. */ | |
| 31 | #define VIRTIO_BALLOON_PFN_SHIFT 12 | |
| 32 | ||
| 33 | struct virtio_balloon_config | |
| 34 | { | |
| 35 | /* Number of pages host wants Guest to give up. */ | |
| 36 | uint32_t num_pages; | |
| 37 | /* Number of pages we've actually got in balloon. */ | |
| 38 | uint32_t actual; | |
| 39 | }; | |
| 40 | ||
| 625a5bef AL |
41 | /* Memory Statistics */ |
| 42 | #define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */ | |
| 43 | #define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */ | |
| 44 | #define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */ | |
| 45 | #define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */ | |
| 46 | #define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */ | |
| 47 | #define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */ | |
| 48 | #define VIRTIO_BALLOON_S_NR 6 | |
| 49 | ||
| 50 | typedef struct VirtIOBalloonStat { | |
| 51 | uint16_t tag; | |
| 52 | uint64_t val; | |
| 541dc0d4 | 53 | } QEMU_PACKED VirtIOBalloonStat; |
| 625a5bef | 54 | |
| bd322087 | 55 | #endif |