Merge tag 'pull-testing-gdbstub-plugins-gitdm-061022-3' of https://github.com/stsquad...
[qemu.git] / hw / virtio / virtio-iommu-pci.c
1 /*
2 * Virtio IOMMU PCI Bindings
3 *
4 * Copyright (c) 2019 Red Hat, Inc.
5 * Written by Eric Auger
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 or
9 * (at your option) any later version.
10 */
11
12 #include "qemu/osdep.h"
13
14 #include "virtio-pci.h"
15 #include "hw/virtio/virtio-iommu.h"
16 #include "hw/qdev-properties.h"
17 #include "hw/qdev-properties-system.h"
18 #include "qapi/error.h"
19 #include "hw/boards.h"
20 #include "qom/object.h"
21
22 typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI;
23
24 /*
25 * virtio-iommu-pci: This extends VirtioPCIProxy.
26 *
27 */
28 DECLARE_INSTANCE_CHECKER(VirtIOIOMMUPCI, VIRTIO_IOMMU_PCI,
29 TYPE_VIRTIO_IOMMU_PCI)
30
31 struct VirtIOIOMMUPCI {
32 VirtIOPCIProxy parent_obj;
33 VirtIOIOMMU vdev;
34 };
35
36 static Property virtio_iommu_pci_properties[] = {
37 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
38 DEFINE_PROP_ARRAY("reserved-regions", VirtIOIOMMUPCI,
39 vdev.nb_reserved_regions, vdev.reserved_regions,
40 qdev_prop_reserved_region, ReservedRegion),
41 DEFINE_PROP_END_OF_LIST(),
42 };
43
44 static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
45 {
46 VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(vpci_dev);
47 DeviceState *vdev = DEVICE(&dev->vdev);
48 VirtIOIOMMU *s = VIRTIO_IOMMU(vdev);
49
50 if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) {
51 error_setg(errp, "Check your machine implements a hotplug handler "
52 "for the virtio-iommu-pci device");
53 return;
54 }
55 for (int i = 0; i < s->nb_reserved_regions; i++) {
56 if (s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_RESERVED &&
57 s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_MSI) {
58 error_setg(errp, "reserved region %d has an invalid type", i);
59 error_append_hint(errp, "Valid values are 0 and 1\n");
60 }
61 }
62 object_property_set_link(OBJECT(dev), "primary-bus",
63 OBJECT(pci_get_bus(&vpci_dev->pci_dev)),
64 &error_abort);
65 virtio_pci_force_virtio_1(vpci_dev);
66 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
67 }
68
69 static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data)
70 {
71 DeviceClass *dc = DEVICE_CLASS(klass);
72 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
73 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
74 k->realize = virtio_iommu_pci_realize;
75 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
76 device_class_set_props(dc, virtio_iommu_pci_properties);
77 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
78 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_IOMMU;
79 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
80 pcidev_k->class_id = PCI_CLASS_OTHERS;
81 dc->hotpluggable = false;
82 }
83
84 static void virtio_iommu_pci_instance_init(Object *obj)
85 {
86 VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(obj);
87
88 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
89 TYPE_VIRTIO_IOMMU);
90 }
91
92 static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info = {
93 .generic_name = TYPE_VIRTIO_IOMMU_PCI,
94 .instance_size = sizeof(VirtIOIOMMUPCI),
95 .instance_init = virtio_iommu_pci_instance_init,
96 .class_init = virtio_iommu_pci_class_init,
97 };
98
99 static void virtio_iommu_pci_register(void)
100 {
101 virtio_pci_types_register(&virtio_iommu_pci_info);
102 }
103
104 type_init(virtio_iommu_pci_register)
105
106