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- /*
- * Virtio PCI driver
- *
- * This module allows virtio devices to be used over a virtual PCI device.
- * This can be used with QEMU based VMMs like KVM or Xen.
- *
- * Copyright IBM Corp. 2007
- *
- * Authors:
- * Anthony Liguori <aliguori@us.ibm.com>
- *
- * This header is BSD licensed so anyone can use the definitions to implement
- * compatible drivers/servers.
- */
-
- #ifndef _LINUX_VIRTIO_PCI_H
- #define _LINUX_VIRTIO_PCI_H
-
- #include <linux/virtio_config.h>
-
- /* A 32-bit r/o bitmask of the features supported by the host */
- #define VIRTIO_PCI_HOST_FEATURES 0
-
- /* A 32-bit r/w bitmask of features activated by the guest */
- #define VIRTIO_PCI_GUEST_FEATURES 4
-
- /* A 32-bit r/w PFN for the currently selected queue */
- #define VIRTIO_PCI_QUEUE_PFN 8
-
- /* A 16-bit r/o queue size for the currently selected queue */
- #define VIRTIO_PCI_QUEUE_NUM 12
-
- /* A 16-bit r/w queue selector */
- #define VIRTIO_PCI_QUEUE_SEL 14
-
- /* A 16-bit r/w queue notifier */
- #define VIRTIO_PCI_QUEUE_NOTIFY 16
-
- /* An 8-bit device status register. */
- #define VIRTIO_PCI_STATUS 18
-
- /* An 8-bit r/o interrupt status register. Reading the value will return the
- * current contents of the ISR and will also clear it. This is effectively
- * 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
-
- /* The remaining space is defined by each driver as the per-driver
- * configuration space */
- #define VIRTIO_PCI_CONFIG 20
-
- /* Virtio ABI version, this must match exactly */
- #define VIRTIO_PCI_ABI_VERSION 0
- #endif
-