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vfio/pci: Add placeholder for device-specific config space quirks

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IGD devices require device-specific quirk to be applied to their PCI
config space. Currently, it is put in the BAR4 quirk that does nothing
to BAR4 itself. Add a placeholder for PCI config space quirks to hold
that quirk later.

Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Corvin Köhne <c.koehne@beckhoff.com>
Link: https://lore.kernel.org/qemu-devel/20250306180131.32970-6-tomitamoeko@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Tomita Moeko 2025-03-07 02:01:25 +08:00 • committed by Cédric Le Goater
parent eabaa7b468
commit b22ab580d2
3 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
hw/vfio/pci-quirks.c
View file

@ -1117,6 +1117,11 @@ static void vfio_probe_rtl8168_bar2_quirk(VFIOPCIDevice *vdev, int nr)
/*
* Common quirk probe entry points.
*/
bool vfio_config_quirk_setup(VFIOPCIDevice *vdev, Error **errp)
{
return true;
}
void vfio_vga_quirk_setup(VFIOPCIDevice *vdev)
{
vfio_vga_probe_ati_3c3_quirk(vdev);

4
hw/vfio/pci.c
View file

@ -3128,6 +3128,10 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
goto out_unset_idev;
}
if (!vfio_config_quirk_setup(vdev, errp)) {
goto out_unset_idev;
}
if (vdev->vga) {
vfio_vga_quirk_setup(vdev);
}

1
hw/vfio/pci.h
View file

@ -204,6 +204,7 @@ uint64_t vfio_vga_read(void *opaque, hwaddr addr, unsigned size);
void vfio_vga_write(void *opaque, hwaddr addr, uint64_t data, unsigned size);
bool vfio_opt_rom_in_denylist(VFIOPCIDevice *vdev);
bool vfio_config_quirk_setup(VFIOPCIDevice *vdev, Error **errp);
void vfio_vga_quirk_setup(VFIOPCIDevice *vdev);
void vfio_vga_quirk_exit(VFIOPCIDevice *vdev);
void vfio_vga_quirk_finalize(VFIOPCIDevice *vdev);