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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* Virtio MEM PCI device
*
* Copyright (C) 2020 Red Hat, Inc.
*
* Authors:
* David Hildenbrand <david@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "virtio-mem-pci.h"
#include "hw/mem/memory-device.h"
#include "qapi/error.h"
#include "qapi/qapi-events-machine.h"
#include "qapi/qapi-events-misc.h"
static void virtio_mem_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VirtIOMEMPCI *mem_pci = VIRTIO_MEM_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&mem_pci->vdev);
virtio_pci_force_virtio_1(vpci_dev);
qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
}
static void virtio_mem_pci_set_addr(MemoryDeviceState *md, uint64_t addr,
Error **errp)
{
object_property_set_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP, addr, errp);
}
static uint64_t virtio_mem_pci_get_addr(const MemoryDeviceState *md)
{
return object_property_get_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP,
&error_abort);
}
static MemoryRegion *virtio_mem_pci_get_memory_region(MemoryDeviceState *md,
Error **errp)
{
VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md);
VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev);
VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
return vmc->get_memory_region(vmem, errp);
}
static uint64_t virtio_mem_pci_get_plugged_size(const MemoryDeviceState *md,
Error **errp)
{
return object_property_get_uint(OBJECT(md), VIRTIO_MEM_SIZE_PROP,
errp);
}
static void virtio_mem_pci_fill_device_info(const MemoryDeviceState *md,
MemoryDeviceInfo *info)
{
VirtioMEMDeviceInfo *vi = g_new0(VirtioMEMDeviceInfo, 1);
VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md);
VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev);
VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem);
DeviceState *dev = DEVICE(md);
if (dev->id) {
vi->has_id = true;
vi->id = g_strdup(dev->id);
}
/* let the real device handle everything else */
vpc->fill_device_info(vmem, vi);
info->u.virtio_mem.data = vi;
info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_MEM;
}
static uint64_t virtio_mem_pci_get_min_alignment(const MemoryDeviceState *md)
{
return object_property_get_uint(OBJECT(md), VIRTIO_MEM_BLOCK_SIZE_PROP,
&error_abort);
}
static void virtio_mem_pci_size_change_notify(Notifier *notifier, void *data)
{
VirtIOMEMPCI *pci_mem = container_of(notifier, VirtIOMEMPCI,
size_change_notifier);
DeviceState *dev = DEVICE(pci_mem);
const uint64_t * const size_p = data;
const char *id = NULL;
if (dev->id) {
id = g_strdup(dev->id);
}
qapi_event_send_memory_device_size_change(!!id, id, *size_p);
}
static void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass);
k->realize = virtio_mem_pci_realize;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_MEM;
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
pcidev_k->class_id = PCI_CLASS_OTHERS;
mdc->get_addr = virtio_mem_pci_get_addr;
mdc->set_addr = virtio_mem_pci_set_addr;
mdc->get_plugged_size = virtio_mem_pci_get_plugged_size;
mdc->get_memory_region = virtio_mem_pci_get_memory_region;
mdc->fill_device_info = virtio_mem_pci_fill_device_info;
mdc->get_min_alignment = virtio_mem_pci_get_min_alignment;
}
static void virtio_mem_pci_instance_init(Object *obj)
{
VirtIOMEMPCI *dev = VIRTIO_MEM_PCI(obj);
VirtIOMEMClass *vmc;
VirtIOMEM *vmem;
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_MEM);
dev->size_change_notifier.notify = virtio_mem_pci_size_change_notify;
vmem = VIRTIO_MEM(&dev->vdev);
vmc = VIRTIO_MEM_GET_CLASS(vmem);
/*
* We never remove the notifier again, as we expect both devices to
* disappear at the same time.
*/
vmc->add_size_change_notifier(vmem, &dev->size_change_notifier);
object_property_add_alias(obj, VIRTIO_MEM_BLOCK_SIZE_PROP,
OBJECT(&dev->vdev), VIRTIO_MEM_BLOCK_SIZE_PROP);
object_property_add_alias(obj, VIRTIO_MEM_SIZE_PROP, OBJECT(&dev->vdev),
VIRTIO_MEM_SIZE_PROP);
object_property_add_alias(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP,
OBJECT(&dev->vdev),
VIRTIO_MEM_REQUESTED_SIZE_PROP);
}
static const VirtioPCIDeviceTypeInfo virtio_mem_pci_info = {
.base_name = TYPE_VIRTIO_MEM_PCI,
.generic_name = "virtio-mem-pci",
.instance_size = sizeof(VirtIOMEMPCI),
.instance_init = virtio_mem_pci_instance_init,
.class_init = virtio_mem_pci_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_MEMORY_DEVICE },
{ }
},
};
static void virtio_mem_pci_register_types(void)
{
virtio_pci_types_register(&virtio_mem_pci_info);
}
type_init(virtio_mem_pci_register_types)
|
