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1/*
2 * Virtio PMEM PCI device
3 *
4 * Copyright (C) 2018-2019 Red Hat, Inc.
5 *
6 * Authors:
7 * Pankaj Gupta <pagupta@redhat.com>
8 * David Hildenbrand <david@redhat.com>
9 *
10 * This work is licensed under the terms of the GNU GPL, version 2.
11 * See the COPYING file in the top-level directory.
12 */
13
14#include "qemu/osdep.h"
15
16#include "virtio-pmem-pci.h"
17#include "hw/mem/memory-device.h"
18#include "qapi/error.h"
19
20static void virtio_pmem_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
21{
22 VirtIOPMEMPCI *pmem_pci = VIRTIO_PMEM_PCI(vpci_dev);
23 DeviceState *vdev = DEVICE(&pmem_pci->vdev);
24
99ba777e 25 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
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26}
27
28static void virtio_pmem_pci_set_addr(MemoryDeviceState *md, uint64_t addr,
29 Error **errp)
30{
5325cc34 31 object_property_set_uint(OBJECT(md), VIRTIO_PMEM_ADDR_PROP, addr, errp);
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32}
33
34static uint64_t virtio_pmem_pci_get_addr(const MemoryDeviceState *md)
35{
36 return object_property_get_uint(OBJECT(md), VIRTIO_PMEM_ADDR_PROP,
37 &error_abort);
38}
39
40static MemoryRegion *virtio_pmem_pci_get_memory_region(MemoryDeviceState *md,
41 Error **errp)
42{
43 VirtIOPMEMPCI *pci_pmem = VIRTIO_PMEM_PCI(md);
44 VirtIOPMEM *pmem = VIRTIO_PMEM(&pci_pmem->vdev);
45 VirtIOPMEMClass *vpc = VIRTIO_PMEM_GET_CLASS(pmem);
46
47 return vpc->get_memory_region(pmem, errp);
48}
49
50static uint64_t virtio_pmem_pci_get_plugged_size(const MemoryDeviceState *md,
51 Error **errp)
52{
53 VirtIOPMEMPCI *pci_pmem = VIRTIO_PMEM_PCI(md);
54 VirtIOPMEM *pmem = VIRTIO_PMEM(&pci_pmem->vdev);
55 VirtIOPMEMClass *vpc = VIRTIO_PMEM_GET_CLASS(pmem);
56 MemoryRegion *mr = vpc->get_memory_region(pmem, errp);
57
58 /* the plugged size corresponds to the region size */
f37f4712 59 return mr ? memory_region_size(mr) : 0;
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60}
61
62static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
63 MemoryDeviceInfo *info)
64{
65 VirtioPMEMDeviceInfo *vi = g_new0(VirtioPMEMDeviceInfo, 1);
66 VirtIOPMEMPCI *pci_pmem = VIRTIO_PMEM_PCI(md);
67 VirtIOPMEM *pmem = VIRTIO_PMEM(&pci_pmem->vdev);
68 VirtIOPMEMClass *vpc = VIRTIO_PMEM_GET_CLASS(pmem);
69 DeviceState *dev = DEVICE(md);
70
71 if (dev->id) {
72 vi->has_id = true;
73 vi->id = g_strdup(dev->id);
74 }
75
76 /* let the real device handle everything else */
77 vpc->fill_device_info(pmem, vi);
78
79 info->u.virtio_pmem.data = vi;
80 info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_PMEM;
81}
82
83static void virtio_pmem_pci_class_init(ObjectClass *klass, void *data)
84{
85 DeviceClass *dc = DEVICE_CLASS(klass);
86 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
87 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
88 MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass);
89
90 k->realize = virtio_pmem_pci_realize;
91 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
92 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
93 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_PMEM;
94 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
95 pcidev_k->class_id = PCI_CLASS_OTHERS;
96
97 mdc->get_addr = virtio_pmem_pci_get_addr;
98 mdc->set_addr = virtio_pmem_pci_set_addr;
99 mdc->get_plugged_size = virtio_pmem_pci_get_plugged_size;
100 mdc->get_memory_region = virtio_pmem_pci_get_memory_region;
101 mdc->fill_device_info = virtio_pmem_pci_fill_device_info;
102}
103
104static void virtio_pmem_pci_instance_init(Object *obj)
105{
106 VirtIOPMEMPCI *dev = VIRTIO_PMEM_PCI(obj);
107
108 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
109 TYPE_VIRTIO_PMEM);
110}
111
112static const VirtioPCIDeviceTypeInfo virtio_pmem_pci_info = {
113 .base_name = TYPE_VIRTIO_PMEM_PCI,
114 .generic_name = "virtio-pmem-pci",
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115 .instance_size = sizeof(VirtIOPMEMPCI),
116 .instance_init = virtio_pmem_pci_instance_init,
117 .class_init = virtio_pmem_pci_class_init,
118 .interfaces = (InterfaceInfo[]) {
119 { TYPE_MEMORY_DEVICE },
120 { }
121 },
122};
123
124static void virtio_pmem_pci_register_types(void)
125{
126 virtio_pci_types_register(&virtio_pmem_pci_info);
127}
128type_init(virtio_pmem_pci_register_types)