vfio-pci: Add support for VGA region access

[platform/upstream/kernel-adaptation-pc.git] / include / uapi / linux / vfio.h

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 4758d1b..4f41f30 100644 (file)
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -303,6 +303,15 @@ enum {
        VFIO_PCI_BAR5_REGION_INDEX,
        VFIO_PCI_ROM_REGION_INDEX,
        VFIO_PCI_CONFIG_REGION_INDEX,
+       /*
+        * Expose VGA regions defined for PCI base class 03, subclass 00.
+        * This includes I/O port ranges 0x3b0 to 0x3bb and 0x3c0 to 0x3df
+        * as well as the MMIO range 0xa0000 to 0xbffff.  Each implemented
+        * range is found at it's identity mapped offset from the region
+        * offset, for example 0x3b0 is region_info.offset + 0x3b0.  Areas
+        * between described ranges are unimplemented.
+        */
+       VFIO_PCI_VGA_REGION_INDEX,
        VFIO_PCI_NUM_REGIONS
 };