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Commit 0dce3771 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

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: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 9a4253db

include/uapi/linux/virtio_pci.h

+10 −5
Original line number Diff line number Diff line
@@ -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