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 "standard-headers/linux/virtio_balloon.h"
19 #include "hw/virtio/virtio.h"
20 
21 #define TYPE_VIRTIO_BALLOON "virtio-balloon-device"
22 #define VIRTIO_BALLOON(obj) \
23         OBJECT_CHECK(VirtIOBalloon, (obj), TYPE_VIRTIO_BALLOON)
24 
25 typedef struct virtio_balloon_stat VirtIOBalloonStat;
26 
27 typedef struct virtio_balloon_stat_modern {
28        uint16_t tag;
29        uint8_t reserved[6];
30        uint64_t val;
31 } VirtIOBalloonStatModern;
32 
33 typedef struct PartiallyBalloonedPage PartiallyBalloonedPage;
34 
35 typedef struct VirtIOBalloon {
36     VirtIODevice parent_obj;
37     VirtQueue *ivq, *dvq, *svq;
38     uint32_t num_pages;
39     uint32_t actual;
40     uint64_t stats[VIRTIO_BALLOON_S_NR];
41     VirtQueueElement *stats_vq_elem;
42     size_t stats_vq_offset;
43     QEMUTimer *stats_timer;
44     int64_t stats_last_update;
45     int64_t stats_poll_interval;
46     uint32_t host_features;
47     PartiallyBalloonedPage *pbp;
48 } VirtIOBalloon;
49 
50 #endif
51