111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/*
|
|
* Virtio platform device driver
|
|
*
|
|
* Copyright 2011, ARM Ltd.
|
|
*
|
|
* Based on Virtio PCI driver by Anthony Liguori, copyright IBM Corp. 2007
|
|
*
|
|
* This header is BSD licensed so anyone can use the definitions to implement
|
|
* compatible drivers/servers.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of IBM nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _LINUX_VIRTIO_MMIO_H
|
|
#define _LINUX_VIRTIO_MMIO_H
|
|
|
|
/*
|
|
* Control registers
|
|
*/
|
|
|
|
/* Magic value ("virt" string) - Read Only */
|
|
#define VIRTIO_MMIO_MAGIC_VALUE 0x000
|
|
|
|
/* Virtio device version - Read Only */
|
|
#define VIRTIO_MMIO_VERSION 0x004
|
|
|
|
/* Virtio device ID - Read Only */
|
|
#define VIRTIO_MMIO_DEVICE_ID 0x008
|
|
|
|
/* Virtio vendor ID - Read Only */
|
|
#define VIRTIO_MMIO_VENDOR_ID 0x00c
|
|
|
|
/* Bitmask of the features supported by the host
|
|
* (32 bits per set) - Read Only */
|
|
#define VIRTIO_MMIO_HOST_FEATURES 0x010
|
|
|
|
/* Host features set selector - Write Only */
|
|
#define VIRTIO_MMIO_HOST_FEATURES_SEL 0x014
|
|
|
|
/* Bitmask of features activated by the guest
|
|
* (32 bits per set) - Write Only */
|
|
#define VIRTIO_MMIO_GUEST_FEATURES 0x020
|
|
|
|
/* Activated features set selector - Write Only */
|
|
#define VIRTIO_MMIO_GUEST_FEATURES_SEL 0x024
|
|
|
|
/* Guest's memory page size in bytes - Write Only */
|
|
#define VIRTIO_MMIO_GUEST_PAGE_SIZE 0x028
|
|
|
|
/* Queue selector - Write Only */
|
|
#define VIRTIO_MMIO_QUEUE_SEL 0x030
|
|
|
|
/* Maximum size of the currently selected queue - Read Only */
|
|
#define VIRTIO_MMIO_QUEUE_NUM_MAX 0x034
|
|
|
|
/* Queue size for the currently selected queue - Write Only */
|
|
#define VIRTIO_MMIO_QUEUE_NUM 0x038
|
|
|
|
/* Used Ring alignment for the currently selected queue - Write Only */
|
|
#define VIRTIO_MMIO_QUEUE_ALIGN 0x03c
|
|
|
|
/* Guest's PFN for the currently selected queue - Read Write */
|
|
#define VIRTIO_MMIO_QUEUE_PFN 0x040
|
|
|
|
/* Queue notifier - Write Only */
|
|
#define VIRTIO_MMIO_QUEUE_NOTIFY 0x050
|
|
|
|
/* Interrupt status - Read Only */
|
|
#define VIRTIO_MMIO_INTERRUPT_STATUS 0x060
|
|
|
|
/* Interrupt acknowledge - Write Only */
|
|
#define VIRTIO_MMIO_INTERRUPT_ACK 0x064
|
|
|
|
/* Device status register - Read Write */
|
|
#define VIRTIO_MMIO_STATUS 0x070
|
|
|
|
/* The config space is defined by each driver as
|
|
* the per-driver configuration space - Read Write */
|
|
#define VIRTIO_MMIO_CONFIG 0x100
|
|
|
|
|
|
|
|
/*
|
|
* Interrupt flags (re: interrupt status & acknowledge registers)
|
|
*/
|
|
|
|
#define VIRTIO_MMIO_INT_VRING (1 << 0)
|
|
#define VIRTIO_MMIO_INT_CONFIG (1 << 1)
|
|
|
|
#endif
|