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f1b24e840f
These structures must be made public to avoid two memory allocations for refactored virtio devices. Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Message-id: 1363624648-16906-2-git-send-email-fred.konrad@greensocs.com Changes V4 <- V3: * Rebased on current git. Changes V3 <- V2: * Style correction spotted by Andreas (virtio-scsi.h). * Style correction for virtio-net.h. Changes V2 <- V1: * Move the dataplane include into the header (virtio-blk). Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Virtio Support
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*
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* Copyright IBM, Corp. 2007-2008
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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* Rusty Russell <rusty@rustcorp.com.au>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef _QEMU_VIRTIO_BALLOON_H
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#define _QEMU_VIRTIO_BALLOON_H
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#include "hw/virtio.h"
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#include "hw/pci/pci.h"
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/* from Linux's linux/virtio_balloon.h */
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/* The ID for virtio_balloon */
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#define VIRTIO_ID_BALLOON 5
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/* The feature bitmap for virtio balloon */
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#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */
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#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory stats virtqueue */
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/* Size of a PFN in the balloon interface. */
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#define VIRTIO_BALLOON_PFN_SHIFT 12
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struct virtio_balloon_config
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{
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/* Number of pages host wants Guest to give up. */
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uint32_t num_pages;
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/* Number of pages we've actually got in balloon. */
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uint32_t actual;
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};
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/* Memory Statistics */
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#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */
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#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */
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#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */
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#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */
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#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */
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#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
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#define VIRTIO_BALLOON_S_NR 6
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typedef struct VirtIOBalloonStat {
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uint16_t tag;
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uint64_t val;
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} QEMU_PACKED VirtIOBalloonStat;
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typedef struct VirtIOBalloon {
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VirtIODevice vdev;
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VirtQueue *ivq, *dvq, *svq;
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uint32_t num_pages;
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uint32_t actual;
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uint64_t stats[VIRTIO_BALLOON_S_NR];
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VirtQueueElement stats_vq_elem;
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size_t stats_vq_offset;
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QEMUTimer *stats_timer;
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int64_t stats_last_update;
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int64_t stats_poll_interval;
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DeviceState *qdev;
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} VirtIOBalloon;
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#endif
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