VOID
RhelShutDown(
IN PVOID DeviceExtension
)
{
PADAPTER_EXTENSION adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
virtio_device_reset(&adaptExt->vdev);
virtio_delete_queues(&adaptExt->vdev);
virtio_device_shutdown(&adaptExt->vdev);
adaptExt->vq = NULL;
}
VOID
RhelShutDown(
IN PVOID DeviceExtension
)
{
ULONG index;
PADAPTER_EXTENSION adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
virtio_device_reset(&adaptExt->vdev);
virtio_delete_queues(&adaptExt->vdev);
for (index = 0; index < adaptExt->num_queues; ++index) {
adaptExt->vq[index] = NULL;
}
virtio_device_shutdown(&adaptExt->vdev);
}
NTSTATUS virtio_find_queues(VirtIODevice *vdev,
unsigned nvqs,
struct virtqueue *vqs[])
{
unsigned i;
NTSTATUS status;
u16 msix_vec;
status = virtio_reserve_queue_memory(vdev, nvqs);
if (!NT_SUCCESS(status)) {
return status;
}
/* set up the device config interrupt */
msix_vec = vdev_get_msix_vector(vdev, -1);
if (msix_vec != VIRTIO_MSI_NO_VECTOR) {
msix_vec = vdev->device->set_config_vector(vdev, msix_vec);
/* Verify we had enough resources to assign the vector */
if (msix_vec == VIRTIO_MSI_NO_VECTOR) {
status = STATUS_DEVICE_BUSY;
goto error_find;
}
}
/* set up queue interrupts */
for (i = 0; i < nvqs; i++) {
msix_vec = vdev_get_msix_vector(vdev, i);
status = vp_setup_vq(
&vqs[i],
vdev,
i,
msix_vec);
if (!NT_SUCCESS(status)) {
goto error_find;
}
}
return STATUS_SUCCESS;
error_find:
virtio_delete_queues(vdev);
return status;
}
