include/hw/virtio/virtio-balloon.h

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