[PATCH v2 8/9] vfio/igd: Handle x-igd-opregion option in config quirk

[Tomita Moeko <tomitamoeko@gmail.com>]

Both enable OpRegion option (x-igd-opregion) and legacy mode require
setting up OpRegion copy for IGD devices. As the config quirk no longer
depends on legacy mode, we can now handle x-igd-opregion option there
instead of in vfio_realize.

Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
---
 hw/vfio/igd.c | 14 +++++++++-----
 hw/vfio/pci.c |  9 ---------
 hw/vfio/pci.h |  2 --
 3 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/hw/vfio/igd.c b/hw/vfio/igd.c
index 40f5803be9..9bfaa24c24 100644
--- a/hw/vfio/igd.c
+++ b/hw/vfio/igd.c
@@ -189,7 +189,7 @@ static bool vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
     return true;
 }
 
-bool vfio_pci_igd_setup_opregion(VFIOPCIDevice *vdev, Error **errp)
+static bool vfio_pci_igd_setup_opregion(VFIOPCIDevice *vdev, Error **errp)
 {
     g_autofree struct vfio_region_info *opregion = NULL;
     int ret;
@@ -557,10 +557,8 @@ bool vfio_probe_igd_config_quirk(VFIOPCIDevice *vdev, Error **errp)
             return false;
         }
 
-        /* Setup OpRegion access */
-        if (!vfio_pci_igd_setup_opregion(vdev, errp)) {
-            return false;
-        }
+        /* Enable OpRegion quirk */
+        vdev->features |= VFIO_FEATURE_ENABLE_IGD_OPREGION;
 
         /* Setup LPC bridge / Host bridge PCI IDs */
         if (!vfio_pci_igd_setup_lpc_bridge(vdev, errp)) {
@@ -568,6 +566,12 @@ bool vfio_probe_igd_config_quirk(VFIOPCIDevice *vdev, Error **errp)
         }
     }
 
+    /* Setup OpRegion access */
+    if ((vdev->features & VFIO_FEATURE_ENABLE_IGD_OPREGION) &&
+        !vfio_pci_igd_setup_opregion(vdev, errp)) {
+        return false;
+    }
+
     /*
      * Allow user to override dsm size using x-igd-gms option, in multiples of
      * 32MiB. This option should only be used when the desired size cannot be
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index b0620a0ae8..8fb415cf45 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3136,15 +3136,6 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
         vfio_bar_quirk_setup(vdev, i);
     }
 
-#ifdef CONFIG_VFIO_IGD
-    if (!vdev->igd_opregion &&
-        vdev->features & VFIO_FEATURE_ENABLE_IGD_OPREGION) {
-        if (!vfio_pci_igd_setup_opregion(vdev, errp)) {
-            goto out_unset_idev;
-        }
-    }
-#endif
-
     /* QEMU emulates all of MSI & MSIX */
     if (pdev->cap_present & QEMU_PCI_CAP_MSIX) {
         memset(vdev->emulated_config_bits + pdev->msix_cap, 0xff,
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index b7b07644a8..4bddfb80f8 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -232,8 +232,6 @@ int vfio_pci_get_pci_hot_reset_info(VFIOPCIDevice *vdev,
 
 bool vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp);
 
-bool vfio_pci_igd_setup_opregion(VFIOPCIDevice *vdev, Error **errp);
-
 void vfio_display_reset(VFIOPCIDevice *vdev);
 bool vfio_display_probe(VFIOPCIDevice *vdev, Error **errp);
 void vfio_display_finalize(VFIOPCIDevice *vdev);
-- 
2.47.2