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authorMichael S. Tsirkin <mst@redhat.com>2014-12-11 14:46:52 +0300
committerMichael S. Tsirkin <mst@redhat.com>2014-12-14 16:10:31 +0300
commit0dce3771fdd1db03c6f498594a34bba5a6d1f870 (patch)
treebfe7fe118a5fc452fd6572a9ac8cffbe23db2d2d /include/uapi/linux/virtio_pci.h
parent9a4253db0c4ea1b6b15aa289203bc0584298278e (diff)
downloadlinux-0dce3771fdd1db03c6f498594a34bba5a6d1f870.tar.xz
virtio_pci: add VIRTIO_PCI_NO_LEGACY
Add macro to disable all legacy register defines. Helpful to make sure legacy macros don't leak through into modern code. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/uapi/linux/virtio_pci.h')
-rw-r--r--include/uapi/linux/virtio_pci.h15
1 files changed, 10 insertions, 5 deletions
diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
index e5ec1caab82a..35b552c7f330 100644
--- a/include/uapi/linux/virtio_pci.h
+++ b/include/uapi/linux/virtio_pci.h
@@ -41,6 +41,8 @@
#include <linux/virtio_config.h>
+#ifndef VIRTIO_PCI_NO_LEGACY
+
/* A 32-bit r/o bitmask of the features supported by the host */
#define VIRTIO_PCI_HOST_FEATURES 0
@@ -67,16 +69,11 @@
* a read-and-acknowledge. */
#define VIRTIO_PCI_ISR 19
-/* The bit of the ISR which indicates a device configuration change. */
-#define VIRTIO_PCI_ISR_CONFIG 0x2
-
/* MSI-X registers: only enabled if MSI-X is enabled. */
/* A 16-bit vector for configuration changes. */
#define VIRTIO_MSI_CONFIG_VECTOR 20
/* A 16-bit vector for selected queue notifications. */
#define VIRTIO_MSI_QUEUE_VECTOR 22
-/* Vector value used to disable MSI for queue */
-#define VIRTIO_MSI_NO_VECTOR 0xffff
/* The remaining space is defined by each driver as the per-driver
* configuration space */
@@ -94,4 +91,12 @@
/* The alignment to use between consumer and producer parts of vring.
* x86 pagesize again. */
#define VIRTIO_PCI_VRING_ALIGN 4096
+
+#endif /* VIRTIO_PCI_NO_LEGACY */
+
+/* The bit of the ISR which indicates a device configuration change. */
+#define VIRTIO_PCI_ISR_CONFIG 0x2
+/* Vector value used to disable MSI for queue */
+#define VIRTIO_MSI_NO_VECTOR 0xffff
+
#endif