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[Qemu-devel] [PATCH 08/15] virtio: add status change callback
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PATCH 08/15] virtio: add status change callback |
Date: |
Thu, 4 Feb 2010 14:46:37 +0200 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
vhost net backend needs to be notified when
frontend status changes. Add a callback.
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
hw/s390-virtio-bus.c | 3 +++
hw/syborg_virtio.c | 2 ++
hw/virtio-pci.c | 6 ++++++
hw/virtio.h | 1 +
4 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index 6b6dafc..a4ce734 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -243,6 +243,9 @@ void s390_virtio_device_update_status(VirtIOS390Device *dev)
uint32_t features;
vdev->status = ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS);
+ if (vdev->set_status) {
+ vdev->set_status(vdev);
+ }
/* Update guest supported feature bitmap */
diff --git a/hw/syborg_virtio.c b/hw/syborg_virtio.c
index 65239a0..19f6473 100644
--- a/hw/syborg_virtio.c
+++ b/hw/syborg_virtio.c
@@ -152,6 +152,8 @@ static void syborg_virtio_writel(void *opaque,
target_phys_addr_t offset,
vdev->status = value & 0xFF;
if (vdev->status == 0)
virtio_reset(vdev);
+ if (vdev->set_status)
+ vdev->set_status(vdev);
break;
case SYBORG_VIRTIO_INT_ENABLE:
s->int_enable = value;
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 709d13e..dbb0b16 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -210,6 +210,9 @@ static void virtio_ioport_write(void *opaque, uint32_t
addr, uint32_t val)
virtio_reset(proxy->vdev);
msix_unuse_all_vectors(&proxy->pci_dev);
}
+ if (vdev->set_status) {
+ vdev->set_status(vdev);
+ }
break;
case VIRTIO_MSI_CONFIG_VECTOR:
msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
@@ -377,6 +380,9 @@ static void virtio_write_config(PCIDevice *pci_dev,
uint32_t address,
if (PCI_COMMAND == address) {
if (!(val & PCI_COMMAND_MASTER)) {
proxy->vdev->status &= ~VIRTIO_CONFIG_S_DRIVER_OK;
+ if (proxy->vdev->set_status) {
+ proxy->vdev->set_status(proxy->vdev);
+ }
}
}
diff --git a/hw/virtio.h b/hw/virtio.h
index 92ad5d1..235e7c4 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -114,6 +114,7 @@ struct VirtIODevice
void (*get_config)(VirtIODevice *vdev, uint8_t *config);
void (*set_config)(VirtIODevice *vdev, const uint8_t *config);
void (*reset)(VirtIODevice *vdev);
+ void (*set_status)(VirtIODevice *vdev);
VirtQueue *vq;
const VirtIOBindings *binding;
void *binding_opaque;
--
1.6.6.144.g5c3af
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