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[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>
This commit is contained in:
Ladi Prosek 2016-05-02 13:46:39 +02:00 committed by Michael Brown
parent 25ae251dd9
commit fbbc895442
1 changed files with 3 additions and 3 deletions
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6
src/include/ipxe/virtio-pci.h
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@ -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;
};