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2e83913 |
Add binding API to set host/guest notifiers.
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Will be used by vhost.
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2e83913 |
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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---
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hw/virtio.c | 13 ++++++++++---
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hw/virtio.h | 5 ++++-
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2 files changed, 14 insertions(+), 4 deletions(-)
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diff --git a/hw/virtio.c b/hw/virtio.c
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index fa7184a..c2b80aa 100644
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--- a/hw/virtio.c
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+++ b/hw/virtio.c
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@@ -594,6 +594,12 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
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return &vdev->vq[i];
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}
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+void virtio_irq(VirtIODevice *vdev, VirtQueue *vq)
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+{
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+ vdev->isr |= 0x01;
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+ virtio_notify_vector(vdev, vq->vector);
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+}
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+
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void virtio_notify(VirtIODevice *vdev, VirtQueue *vq)
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{
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/* Always notify when queue is empty (when feature acknowledge) */
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@@ -602,8 +608,7 @@ void virtio_notify(VirtIODevice *vdev, VirtQueue *vq)
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(vq->inuse || vring_avail_idx(vq) != vq->last_avail_idx)))
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return;
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- vdev->isr |= 0x01;
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- virtio_notify_vector(vdev, vq->vector);
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+ virtio_irq(vdev, vq);
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}
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void virtio_notify_config(VirtIODevice *vdev)
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@@ -716,8 +721,10 @@ VirtIODevice *virtio_common_init(const char *name, uint16_t device_id,
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vdev->queue_sel = 0;
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vdev->config_vector = VIRTIO_NO_VECTOR;
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vdev->vq = qemu_mallocz(sizeof(VirtQueue) * VIRTIO_PCI_QUEUE_MAX);
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- for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++)
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+ for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
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vdev->vq[i].vector = VIRTIO_NO_VECTOR;
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+ vdev->vq[i].vdev = vdev;
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+ }
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vdev->name = name;
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vdev->config_len = config_size;
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diff --git a/hw/virtio.h b/hw/virtio.h
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index 3994cc9..10a0959 100644
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--- a/hw/virtio.h
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+++ b/hw/virtio.h
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@@ -18,6 +18,7 @@
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#include "net.h"
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#include "qdev.h"
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#include "sysemu.h"
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+#include "notifier.h"
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/* from Linux's linux/virtio_config.h */
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@@ -88,6 +89,8 @@ typedef struct {
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int (*load_config)(void * opaque, QEMUFile *f);
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int (*load_queue)(void * opaque, int n, QEMUFile *f);
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unsigned (*get_features)(void * opaque);
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+ int (*guest_notifier)(void * opaque, int n, bool assigned);
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+ int (*host_notifier)(void * opaque, int n, bool assigned);
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} VirtIOBindings;
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#define VIRTIO_PCI_QUEUE_MAX 64
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@@ -180,5 +183,5 @@ void virtio_net_exit(VirtIODevice *vdev);
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DEFINE_PROP_BIT("indirect_desc", _state, _field, \
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VIRTIO_RING_F_INDIRECT_DESC, true)
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-
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+void virtio_irq(VirtIODevice *vdev, VirtQueue *vq);
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#endif
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--
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1.6.6.144.g5c3af
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