From 206e91d143301414df2deb48a411e402414ba6db Mon Sep 17 00:00:00 2001 From: Viktor Prutyanov Date: Fri, 12 May 2023 16:51:20 +0300 Subject: virtio-pci: add handling of PCI ATS and Device-TLB enable/disable According to PCIe Address Translation Services specification 5.1.3., ATS Control Register has Enable bit to enable/disable ATS. Guest may enable/disable PCI ATS and, accordingly, Device-TLB for the VirtIO PCI device. So, raise/lower a flag and call a trigger function to pass this event to a device implementation. Signed-off-by: Viktor Prutyanov Message-Id: <20230512135122.70403-2-viktor@daynix.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/virtio.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/hw/virtio/virtio.h') diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index f6b38f7e9c..af86ed7249 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -155,6 +155,7 @@ struct VirtIODevice QLIST_HEAD(, VirtQueue) *vector_queues; QTAILQ_ENTRY(VirtIODevice) next; EventNotifier config_notifier; + bool device_iotlb_enabled; }; struct VirtioDeviceClass { @@ -212,6 +213,7 @@ struct VirtioDeviceClass { const VMStateDescription *vmsd; bool (*primary_unplug_pending)(void *opaque); struct vhost_dev *(*get_vhost)(VirtIODevice *vdev); + void (*toggle_device_iotlb)(VirtIODevice *vdev); }; void virtio_instance_init_common(Object *proxy_obj, void *data, -- cgit 1.4.1