mirror of
https://github.com/clearlinux/kvmtool.git
synced 2026-06-16 02:15:47 +00:00
Andre Przywara
a08bb43a0c
Some distributions with an older uapi header copy do not have all the definitions that we need (Ubuntu 12.04 comes to mind). So copy the latest versions from the Linux tree to override the system header versions. Also include virtio_mmio.h, which is technically not an uapi header, but is used in such a way. QEMU has actually a copy of these definitions in its own header file, so our approach should even be better. Those files are from a Linux v4.1-rc6 source tree, but the virtio-1.0 updates have been left out. kvmtool implements only the older version of virtio. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
112 lines
3.7 KiB
C
112 lines
3.7 KiB
C
/*
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* Virtio platform device driver
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*
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* Copyright 2011, ARM Ltd.
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*
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* Based on Virtio PCI driver by Anthony Liguori, copyright IBM Corp. 2007
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*
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* This header is BSD licensed so anyone can use the definitions to implement
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* compatible drivers/servers.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of IBM nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _LINUX_VIRTIO_MMIO_H
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#define _LINUX_VIRTIO_MMIO_H
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/*
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* Control registers
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*/
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/* Magic value ("virt" string) - Read Only */
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#define VIRTIO_MMIO_MAGIC_VALUE 0x000
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/* Virtio device version - Read Only */
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#define VIRTIO_MMIO_VERSION 0x004
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/* Virtio device ID - Read Only */
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#define VIRTIO_MMIO_DEVICE_ID 0x008
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/* Virtio vendor ID - Read Only */
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#define VIRTIO_MMIO_VENDOR_ID 0x00c
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/* Bitmask of the features supported by the host
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* (32 bits per set) - Read Only */
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#define VIRTIO_MMIO_HOST_FEATURES 0x010
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/* Host features set selector - Write Only */
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#define VIRTIO_MMIO_HOST_FEATURES_SEL 0x014
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/* Bitmask of features activated by the guest
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* (32 bits per set) - Write Only */
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#define VIRTIO_MMIO_GUEST_FEATURES 0x020
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/* Activated features set selector - Write Only */
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#define VIRTIO_MMIO_GUEST_FEATURES_SEL 0x024
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/* Guest's memory page size in bytes - Write Only */
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#define VIRTIO_MMIO_GUEST_PAGE_SIZE 0x028
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/* Queue selector - Write Only */
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#define VIRTIO_MMIO_QUEUE_SEL 0x030
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/* Maximum size of the currently selected queue - Read Only */
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#define VIRTIO_MMIO_QUEUE_NUM_MAX 0x034
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/* Queue size for the currently selected queue - Write Only */
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#define VIRTIO_MMIO_QUEUE_NUM 0x038
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/* Used Ring alignment for the currently selected queue - Write Only */
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#define VIRTIO_MMIO_QUEUE_ALIGN 0x03c
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/* Guest's PFN for the currently selected queue - Read Write */
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#define VIRTIO_MMIO_QUEUE_PFN 0x040
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/* Queue notifier - Write Only */
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#define VIRTIO_MMIO_QUEUE_NOTIFY 0x050
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/* Interrupt status - Read Only */
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#define VIRTIO_MMIO_INTERRUPT_STATUS 0x060
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/* Interrupt acknowledge - Write Only */
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#define VIRTIO_MMIO_INTERRUPT_ACK 0x064
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/* Device status register - Read Write */
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#define VIRTIO_MMIO_STATUS 0x070
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/* The config space is defined by each driver as
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* the per-driver configuration space - Read Write */
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#define VIRTIO_MMIO_CONFIG 0x100
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/*
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* Interrupt flags (re: interrupt status & acknowledge registers)
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*/
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#define VIRTIO_MMIO_INT_VRING (1 << 0)
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#define VIRTIO_MMIO_INT_CONFIG (1 << 1)
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#endif
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