hw/arm/raspi: fix CPRMAN base address
[qemu.git] / hw / virtio / virtio-mem-pci.c
1 /*
2 * Virtio MEM PCI device
3 *
4 * Copyright (C) 2020 Red Hat, Inc.
5 *
6 * Authors:
7 * David Hildenbrand <david@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2.
10 * See the COPYING file in the top-level directory.
11 */
12
13 #include "qemu/osdep.h"
14 #include "virtio-mem-pci.h"
15 #include "hw/mem/memory-device.h"
16 #include "qapi/error.h"
17 #include "qapi/qapi-events-machine.h"
18 #include "qapi/qapi-events-misc.h"
19
20 static void virtio_mem_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
21 {
22 VirtIOMEMPCI *mem_pci = VIRTIO_MEM_PCI(vpci_dev);
23 DeviceState *vdev = DEVICE(&mem_pci->vdev);
24
25 virtio_pci_force_virtio_1(vpci_dev);
26 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
27 }
28
29 static void virtio_mem_pci_set_addr(MemoryDeviceState *md, uint64_t addr,
30 Error **errp)
31 {
32 object_property_set_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP, addr, errp);
33 }
34
35 static uint64_t virtio_mem_pci_get_addr(const MemoryDeviceState *md)
36 {
37 return object_property_get_uint(OBJECT(md), VIRTIO_MEM_ADDR_PROP,
38 &error_abort);
39 }
40
41 static MemoryRegion *virtio_mem_pci_get_memory_region(MemoryDeviceState *md,
42 Error **errp)
43 {
44 VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md);
45 VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev);
46 VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
47
48 return vmc->get_memory_region(vmem, errp);
49 }
50
51 static uint64_t virtio_mem_pci_get_plugged_size(const MemoryDeviceState *md,
52 Error **errp)
53 {
54 return object_property_get_uint(OBJECT(md), VIRTIO_MEM_SIZE_PROP,
55 errp);
56 }
57
58 static void virtio_mem_pci_fill_device_info(const MemoryDeviceState *md,
59 MemoryDeviceInfo *info)
60 {
61 VirtioMEMDeviceInfo *vi = g_new0(VirtioMEMDeviceInfo, 1);
62 VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md);
63 VirtIOMEM *vmem = VIRTIO_MEM(&pci_mem->vdev);
64 VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem);
65 DeviceState *dev = DEVICE(md);
66
67 if (dev->id) {
68 vi->has_id = true;
69 vi->id = g_strdup(dev->id);
70 }
71
72 /* let the real device handle everything else */
73 vpc->fill_device_info(vmem, vi);
74
75 info->u.virtio_mem.data = vi;
76 info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_MEM;
77 }
78
79 static void virtio_mem_pci_size_change_notify(Notifier *notifier, void *data)
80 {
81 VirtIOMEMPCI *pci_mem = container_of(notifier, VirtIOMEMPCI,
82 size_change_notifier);
83 DeviceState *dev = DEVICE(pci_mem);
84 const uint64_t * const size_p = data;
85 const char *id = NULL;
86
87 if (dev->id) {
88 id = g_strdup(dev->id);
89 }
90
91 qapi_event_send_memory_device_size_change(!!id, id, *size_p);
92 }
93
94 static void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
95 {
96 DeviceClass *dc = DEVICE_CLASS(klass);
97 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
98 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
99 MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass);
100
101 k->realize = virtio_mem_pci_realize;
102 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
103 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
104 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_MEM;
105 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
106 pcidev_k->class_id = PCI_CLASS_OTHERS;
107
108 mdc->get_addr = virtio_mem_pci_get_addr;
109 mdc->set_addr = virtio_mem_pci_set_addr;
110 mdc->get_plugged_size = virtio_mem_pci_get_plugged_size;
111 mdc->get_memory_region = virtio_mem_pci_get_memory_region;
112 mdc->fill_device_info = virtio_mem_pci_fill_device_info;
113 }
114
115 static void virtio_mem_pci_instance_init(Object *obj)
116 {
117 VirtIOMEMPCI *dev = VIRTIO_MEM_PCI(obj);
118 VirtIOMEMClass *vmc;
119 VirtIOMEM *vmem;
120
121 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
122 TYPE_VIRTIO_MEM);
123
124 dev->size_change_notifier.notify = virtio_mem_pci_size_change_notify;
125 vmem = VIRTIO_MEM(&dev->vdev);
126 vmc = VIRTIO_MEM_GET_CLASS(vmem);
127 /*
128 * We never remove the notifier again, as we expect both devices to
129 * disappear at the same time.
130 */
131 vmc->add_size_change_notifier(vmem, &dev->size_change_notifier);
132
133 object_property_add_alias(obj, VIRTIO_MEM_BLOCK_SIZE_PROP,
134 OBJECT(&dev->vdev), VIRTIO_MEM_BLOCK_SIZE_PROP);
135 object_property_add_alias(obj, VIRTIO_MEM_SIZE_PROP, OBJECT(&dev->vdev),
136 VIRTIO_MEM_SIZE_PROP);
137 object_property_add_alias(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP,
138 OBJECT(&dev->vdev),
139 VIRTIO_MEM_REQUESTED_SIZE_PROP);
140 }
141
142 static const VirtioPCIDeviceTypeInfo virtio_mem_pci_info = {
143 .base_name = TYPE_VIRTIO_MEM_PCI,
144 .generic_name = "virtio-mem-pci",
145 .instance_size = sizeof(VirtIOMEMPCI),
146 .instance_init = virtio_mem_pci_instance_init,
147 .class_init = virtio_mem_pci_class_init,
148 .interfaces = (InterfaceInfo[]) {
149 { TYPE_MEMORY_DEVICE },
150 { }
151 },
152 };
153
154 static void virtio_mem_pci_register_types(void)
155 {
156 virtio_pci_types_register(&virtio_mem_pci_info);
157 }
158 type_init(virtio_mem_pci_register_types)