feat: vfio-manager graphics mode

assets/state-vfio-manager/0400_configmap.yaml

@@ -94,6 +94,12 @@ data:
 
         echo "unbinding device $gpu"
         unbind_from_driver $gpu
+        #for graphics mode, we need to unbind the auxiliary device as well
+        aux_dev=$(get_graphics_aux_dev "$gpu")
+        if [ "$aux_dev" != "NONE" ]; then
+          echo "gpu $gpu is in graphics mode aux_dev $aux_dev"
+          unbind_from_driver "$aux_dev"
+        fi
     }
 
     unbind_all() {
@@ -106,13 +112,9 @@ data:
         done
     }
 
-    bind_device() {
+    bind_pci_device() {
         local gpu=$1
 
-        if ! is_nvidia_gpu_device $gpu; then
-            return 0
-        fi
-
         if ! is_bound_to_vfio $gpu; then
           unbind_from_other_driver $gpu
           echo "binding device $gpu"
@@ -123,6 +125,35 @@ data:
         fi
     }
 
+    get_graphics_aux_dev() {
+        local gpu=$1
+        device_class_file=$(readlink -f "/sys/bus/pci/devices/$gpu/class")
+        device_class=$(cat "$device_class_file")
+        if [ "$device_class" == "0x030000" ]; then
+          aux_dev=$(ls "/sys/bus/pci/devices/$gpu" | grep consumer | awk -Fconsumer:pci: '{print $2}')
+          echo "$aux_dev"
+        else
+          echo "NONE"
+        fi
+    }
+
+    bind_device() {
+        local gpu=$1
+
+        if ! is_nvidia_gpu_device $gpu; then
+            echo "device $gpu is not a gpu!"
+            return 0
+        fi
+
+        bind_pci_device "$gpu"
+        #for graphics mode, we need to bind the auxiliary device as well
+        aux_dev=$(get_graphics_aux_dev "$gpu")
+        if [ "$aux_dev" != "NONE" ]; then
+          echo "gpu $gpu is in graphics mode aux_dev $aux_dev"
+          bind_pci_device "$aux_dev"
+        fi
+    }
+
     bind_all() {
         for dev in /sys/bus/pci/devices/*; do
             read vendor < $dev/vendor