[virtio] Renumber virtio_pci_region flags

Some of the regions may end up being unmapped, either because they are optional or because the attempt to map them has failed. Region types starting at 0 didn't make it easy to test for this condition. This commit bumps all valid region types up by 1 with 0 having the implicit 'unmapped' meaning. Signed-off-by: Ladi Prosek <lprosek@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
ipxe · Jun 20, 2016 · fbbc895 · fbbc895
1 parent 25ae251
commit fbbc895
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/include/ipxe/virtio-pci.h b/src/include/ipxe/virtio-pci.h
@@ -107,11 +107,11 @@ struct virtio_pci_region {
 /* How to interpret the base field */
 #define VIRTIO_PCI_REGION_TYPE_MASK  0x00000003
 /* The base field is a memory address */
-#define VIRTIO_PCI_REGION_MEMORY     0x00000000
+#define VIRTIO_PCI_REGION_MEMORY     0x00000001
 /* The base field is a port address */
-#define VIRTIO_PCI_REGION_PORT       0x00000001
+#define VIRTIO_PCI_REGION_PORT       0x00000002
 /* The base field is an offset within the PCI bar */
-#define VIRTIO_PCI_REGION_PCI_CONFIG 0x00000002
+#define VIRTIO_PCI_REGION_PCI_CONFIG 0x00000003
     unsigned flags;
 };