1// Copyright 2017 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#pragma once
6
7#include <zircon/compiler.h>
8
9// clang-format off
10
11struct virtio_mmio_config {
12    /* 0x00 */
13    uint32_t magic;
14    uint32_t version;
15    uint32_t device_id;
16    uint32_t vendor_id;
17    /* 0x10 */
18    uint32_t device_features;
19    uint32_t device_features_sel;
20    uint32_t __reserved0[2];
21    /* 0x20 */
22    uint32_t driver_features;
23    uint32_t driver_features_sel;
24    uint32_t guest_page_size;
25    uint32_t __reserved1[1];
26    /* 0x30 */
27    uint32_t queue_sel;
28    uint32_t queue_num_max;
29    uint32_t queue_num;
30    uint32_t queue_align;
31    /* 0x40 */
32    uint32_t queue_pfn;
33    uint32_t __reserved2[3];
34    /* 0x50 */
35    uint32_t queue_notify;
36    uint32_t __reserved3[3];
37    /* 0x60 */
38    uint32_t interrupt_status;
39    uint32_t interrupt_ack;
40    uint32_t __reserved4[2];
41    /* 0x70 */
42    uint32_t status;
43    uint8_t __reserved5[0x8c];
44    /* 0x100 */
45    uint32_t config[0];
46};
47
48static_assert(sizeof(struct virtio_mmio_config) == 0x100, "");
49
50#define VIRTIO_MMIO_MAGIC 0x74726976 // 'virt'
51