---
drivers/gpu/drm/virtio/virtgpu_drm_bus.c | 44 +++++++++++++++++---------------
1 file changed, 24 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c
index f4ec816..88a3916 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c
@@ -37,6 +37,26 @@ int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master)
return 0;
}
+static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev)
+{
+ struct apertures_struct *ap;
+ bool primary;
+
+ ap = alloc_apertures(1);
+ if (!ap)
+ return;
+
+ ap->ranges[0].base = pci_resource_start(pci_dev, 0);
+ ap->ranges[0].size = pci_resource_len(pci_dev, 0);
+
+ primary = pci_dev->resource[PCI_ROM_RESOURCE].flags
+ & IORESOURCE_ROM_SHADOW;
+
+ remove_conflicting_framebuffers(ap, "virtiodrmfb", primary);
+
+ kfree(ap);
+}
+
int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)
{
struct drm_device *dev;
@@ -52,27 +72,11 @@ int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)
struct pci_dev *pdev = to_pci_dev(vdev->dev.parent);
bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
- if (vga) {
- /*
- * Need to make sure we don't have two drivers
- * for the same hardware here. Some day we
- * will simply kick out the firmware
- * (vesa/efi) framebuffer.
- *
- * Virtual hardware specs for virtio-vga are
- * not finalized yet, therefore we can't add
- * code for that yet.
- *
- * So ignore the device for the time being,
- * and suggest to the user use the device
- * variant without vga compatibility mode.
- */
- DRM_ERROR("virtio-vga not (yet) supported\n");
- DRM_ERROR("please use virtio-gpu-pci instead\n");
- ret = -ENODEV;
- goto err_free;
- }
+ DRM_INFO("pci: %s detected\n",
+ vga ? "virtio-vga" : "virtio-gpu-pci");
dev->pdev = pdev;
+ if (vga)
+ virtio_pci_kick_out_firmware_fb(pdev);
}
ret = drm_dev_register(dev, 0);
--
1.8.3.1
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