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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
20static 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
29static 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
35static 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
41static MemoryRegion *virtio_mem_pci_get_memory_region(MemoryDeviceState *md,
42 Error **errp)
43{
44 VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(md);
45 VirtIOMEM *vmem = &pci_mem->vdev;
46 VirtIOMEMClass *vmc = VIRTIO_MEM_GET_CLASS(vmem);
47
48 return vmc->get_memory_region(vmem, errp);
49}
50
51static 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
58static 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 = &pci_mem->vdev;
64 VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem);
65 DeviceState *dev = DEVICE(md);
66
67 if (dev->id) {
68 vi->id = g_strdup(dev->id);
69 }
70
71
72 vpc->fill_device_info(vmem, vi);
73
74 info->u.virtio_mem.data = vi;
75 info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_MEM;
76}
77
78static uint64_t virtio_mem_pci_get_min_alignment(const MemoryDeviceState *md)
79{
80 return object_property_get_uint(OBJECT(md), VIRTIO_MEM_BLOCK_SIZE_PROP,
81 &error_abort);
82}
83
84static void virtio_mem_pci_size_change_notify(Notifier *notifier, void *data)
85{
86 VirtIOMEMPCI *pci_mem = container_of(notifier, VirtIOMEMPCI,
87 size_change_notifier);
88 DeviceState *dev = DEVICE(pci_mem);
89 char *qom_path = object_get_canonical_path(OBJECT(dev));
90 const uint64_t * const size_p = data;
91
92 qapi_event_send_memory_device_size_change(dev->id, *size_p, qom_path);
93 g_free(qom_path);
94}
95
96static void virtio_mem_pci_unplug_request_check(VirtIOMDPCI *vmd, Error **errp)
97{
98 VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(vmd);
99 VirtIOMEM *vmem = &pci_mem->vdev;
100 VirtIOMEMClass *vpc = VIRTIO_MEM_GET_CLASS(vmem);
101
102 vpc->unplug_request_check(vmem, errp);
103}
104
105static void virtio_mem_pci_get_requested_size(Object *obj, Visitor *v,
106 const char *name, void *opaque,
107 Error **errp)
108{
109 VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(obj);
110
111 object_property_get(OBJECT(&pci_mem->vdev), name, v, errp);
112}
113
114static void virtio_mem_pci_set_requested_size(Object *obj, Visitor *v,
115 const char *name, void *opaque,
116 Error **errp)
117{
118 VirtIOMEMPCI *pci_mem = VIRTIO_MEM_PCI(obj);
119 DeviceState *dev = DEVICE(obj);
120
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125
126
127 if (dev->pending_deleted_event) {
128 error_setg(errp, "'%s' cannot be changed if the device is in the"
129 " process of unplug", name);
130 return;
131 }
132
133 object_property_set(OBJECT(&pci_mem->vdev), name, v, errp);
134}
135
136static void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
137{
138 DeviceClass *dc = DEVICE_CLASS(klass);
139 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
140 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
141 MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass);
142 VirtIOMDPCIClass *vmdc = VIRTIO_MD_PCI_CLASS(klass);
143
144 k->realize = virtio_mem_pci_realize;
145 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
146 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
147 pcidev_k->class_id = PCI_CLASS_OTHERS;
148
149 mdc->get_addr = virtio_mem_pci_get_addr;
150 mdc->set_addr = virtio_mem_pci_set_addr;
151 mdc->get_plugged_size = virtio_mem_pci_get_plugged_size;
152 mdc->get_memory_region = virtio_mem_pci_get_memory_region;
153 mdc->fill_device_info = virtio_mem_pci_fill_device_info;
154 mdc->get_min_alignment = virtio_mem_pci_get_min_alignment;
155
156 vmdc->unplug_request_check = virtio_mem_pci_unplug_request_check;
157}
158
159static void virtio_mem_pci_instance_init(Object *obj)
160{
161 VirtIOMEMPCI *dev = VIRTIO_MEM_PCI(obj);
162 VirtIOMEMClass *vmc;
163 VirtIOMEM *vmem;
164
165 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
166 TYPE_VIRTIO_MEM);
167
168 dev->size_change_notifier.notify = virtio_mem_pci_size_change_notify;
169 vmem = &dev->vdev;
170 vmc = VIRTIO_MEM_GET_CLASS(vmem);
171
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174
175 vmc->add_size_change_notifier(vmem, &dev->size_change_notifier);
176
177 object_property_add_alias(obj, VIRTIO_MEM_BLOCK_SIZE_PROP,
178 OBJECT(&dev->vdev), VIRTIO_MEM_BLOCK_SIZE_PROP);
179 object_property_add_alias(obj, VIRTIO_MEM_SIZE_PROP, OBJECT(&dev->vdev),
180 VIRTIO_MEM_SIZE_PROP);
181 object_property_add(obj, VIRTIO_MEM_REQUESTED_SIZE_PROP, "size",
182 virtio_mem_pci_get_requested_size,
183 virtio_mem_pci_set_requested_size, NULL, NULL);
184}
185
186static const VirtioPCIDeviceTypeInfo virtio_mem_pci_info = {
187 .base_name = TYPE_VIRTIO_MEM_PCI,
188 .parent = TYPE_VIRTIO_MD_PCI,
189 .generic_name = "virtio-mem-pci",
190 .instance_size = sizeof(VirtIOMEMPCI),
191 .instance_init = virtio_mem_pci_instance_init,
192 .class_init = virtio_mem_pci_class_init,
193};
194
195static void virtio_mem_pci_register_types(void)
196{
197 virtio_pci_types_register(&virtio_mem_pci_info);
198}
199type_init(virtio_mem_pci_register_types)
200