diff options
| -rw-r--r-- | hw/virtio/virtio-pci.c | 15 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-pci.h | 5 |
2 files changed, 20 insertions, 0 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 34db51e241..d4f2ffe986 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1251,6 +1251,9 @@ static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr, case VIRTIO_PCI_COMMON_Q_USEDHI: val = proxy->vqs[vdev->queue_sel].used[1]; break; + case VIRTIO_PCI_COMMON_Q_RESET: + val = proxy->vqs[vdev->queue_sel].reset; + break; default: val = 0; } @@ -1338,6 +1341,7 @@ static void virtio_pci_common_write(void *opaque, hwaddr addr, ((uint64_t)proxy->vqs[vdev->queue_sel].used[1]) << 32 | proxy->vqs[vdev->queue_sel].used[0]); proxy->vqs[vdev->queue_sel].enabled = 1; + proxy->vqs[vdev->queue_sel].reset = 0; } else { virtio_error(vdev, "wrong value for queue_enable %"PRIx64, val); } @@ -1360,6 +1364,16 @@ static void virtio_pci_common_write(void *opaque, hwaddr addr, case VIRTIO_PCI_COMMON_Q_USEDHI: proxy->vqs[vdev->queue_sel].used[1] = val; break; + case VIRTIO_PCI_COMMON_Q_RESET: + if (val == 1) { + proxy->vqs[vdev->queue_sel].reset = 1; + + virtio_queue_reset(vdev, vdev->queue_sel); + + proxy->vqs[vdev->queue_sel].reset = 0; + proxy->vqs[vdev->queue_sel].enabled = 0; + } + break; default: break; } @@ -1954,6 +1968,7 @@ static void virtio_pci_reset(DeviceState *qdev) for (i = 0; i < VIRTIO_QUEUE_MAX; i++) { proxy->vqs[i].enabled = 0; + proxy->vqs[i].reset = 0; proxy->vqs[i].num = 0; proxy->vqs[i].desc[0] = proxy->vqs[i].desc[1] = 0; proxy->vqs[i].avail[0] = proxy->vqs[i].avail[1] = 0; diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h index 2446dcd9ae..938799e8f6 100644 --- a/include/hw/virtio/virtio-pci.h +++ b/include/hw/virtio/virtio-pci.h @@ -117,6 +117,11 @@ typedef struct VirtIOPCIRegion { typedef struct VirtIOPCIQueue { uint16_t num; bool enabled; + /* + * No need to migrate the reset status, because it is always 0 + * when the migration starts. + */ + bool reset; uint32_t desc[2]; uint32_t avail[2]; uint32_t used[2]; |