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 adds VIRTIO_PCI_REGION_NONE with the value of 0
and bumps the valid region types up by 1.
Signed-off-by: Ladi Prosek <lpro...@redhat.com>
---
src/include/ipxe/virtio-pci.h | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/include/ipxe/virtio-pci.h b/src/include/ipxe/virtio-pci.h
index c7452c8..ec8efaa 100644
--- a/src/include/ipxe/virtio-pci.h
+++ b/src/include/ipxe/virtio-pci.h
@@ -106,12 +106,14 @@ struct virtio_pci_region {
/* How to interpret the base field */
#define VIRTIO_PCI_REGION_TYPE_MASK 0x00000003
+/* The region is unused */
+#define VIRTIO_PCI_REGION_NONE 0x00000000
/* 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;
};
--
2.5.5
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