1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* Virtio MMIO bindings
*
* Copyright (c) 2011 Linaro Limited
*
* Author:
* Peter Maydell <peter.maydell@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HW_VIRTIO_MMIO_H
#define HW_VIRTIO_MMIO_H
#include "hw/virtio/virtio-bus.h"
#include "qom/object.h"
/* QOM macros */
/* virtio-mmio-bus */
#define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus"
/* This is reusing the VirtioBusState typedef from TYPE_VIRTIO_BUS */
DECLARE_OBJ_CHECKERS(VirtioBusState, VirtioBusClass,
VIRTIO_MMIO_BUS, TYPE_VIRTIO_MMIO_BUS)
/* virtio-mmio */
#define TYPE_VIRTIO_MMIO "virtio-mmio"
OBJECT_DECLARE_SIMPLE_TYPE(VirtIOMMIOProxy, VIRTIO_MMIO)
#define VIRT_MAGIC 0x74726976 /* 'virt' */
#define VIRT_VERSION 2
#define VIRT_VERSION_LEGACY 1
#define VIRT_VENDOR 0x554D4551 /* 'QEMU' */
typedef struct VirtIOMMIOQueue {
uint16_t num;
bool enabled;
uint32_t desc[2];
uint32_t avail[2];
uint32_t used[2];
} VirtIOMMIOQueue;
#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT 1
#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD \
(1 << VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT)
struct VirtIOMMIOProxy {
/* Generic */
SysBusDevice parent_obj;
MemoryRegion iomem;
qemu_irq irq;
bool legacy;
uint32_t flags;
/* Guest accessible state needing migration and reset */
uint32_t host_features_sel;
uint32_t guest_features_sel;
uint32_t guest_page_shift;
/* virtio-bus */
VirtioBusState bus;
bool format_transport_address;
/* Fields only used for non-legacy (v2) devices */
uint32_t guest_features[2];
VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX];
};
#endif
|
