[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / virtio_pci.h

/*
 * 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 work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 *
 */

#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
Commit	Line	Data
3343660d AL	1	/*
	2	* Virtio PCI driver
	3	*
	4	* This module allows virtio devices to be used over a virtual PCI device.
	5	* This can be used with QEMU based VMMs like KVM or Xen.
	6	*
	7	* Copyright IBM Corp. 2007
	8	*
	9	* Authors:
	10	* Anthony Liguori <aliguori@us.ibm.com>
	11	*
	12	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	13	* See the COPYING file in the top-level directory.
	14	*
	15	*/
	16
	17	#ifndef _LINUX_VIRTIO_PCI_H
	18	#define _LINUX_VIRTIO_PCI_H
	19
	20	#include <linux/virtio_config.h>
	21
	22	/* A 32-bit r/o bitmask of the features supported by the host */
	23	#define VIRTIO_PCI_HOST_FEATURES 0
	24
	25	/* A 32-bit r/w bitmask of features activated by the guest */
	26	#define VIRTIO_PCI_GUEST_FEATURES 4
	27
	28	/* A 32-bit r/w PFN for the currently selected queue */
	29	#define VIRTIO_PCI_QUEUE_PFN 8
	30
	31	/* A 16-bit r/o queue size for the currently selected queue */
	32	#define VIRTIO_PCI_QUEUE_NUM 12
	33
	34	/* A 16-bit r/w queue selector */
	35	#define VIRTIO_PCI_QUEUE_SEL 14
	36
	37	/* A 16-bit r/w queue notifier */
	38	#define VIRTIO_PCI_QUEUE_NOTIFY 16
	39
	40	/* An 8-bit device status register. */
	41	#define VIRTIO_PCI_STATUS 18
	42
	43	/* An 8-bit r/o interrupt status register. Reading the value will return the
	44	* current contents of the ISR and will also clear it. This is effectively
	45	* a read-and-acknowledge. */
	46	#define VIRTIO_PCI_ISR 19
	47
	48	/* The bit of the ISR which indicates a device configuration change. */
	49	#define VIRTIO_PCI_ISR_CONFIG 0x2
	50
	51	/* The remaining space is defined by each driver as the per-driver
	52	* configuration space */
	53	#define VIRTIO_PCI_CONFIG 20
	54
55a7c066 AL	55	/* Virtio ABI version, this must match exactly */
55a7c066 AL	56	#define VIRTIO_PCI_ABI_VERSION 0
3343660d	57	#endif