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8b4eb09e EA |
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" | |
ce35e229 | 17 | #include "hw/qdev-properties-system.h" |
8b4eb09e EA |
18 | #include "qapi/error.h" |
19 | #include "hw/boards.h" | |
db1015e9 | 20 | #include "qom/object.h" |
8b4eb09e EA |
21 | |
22 | typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI; | |
23 | ||
24 | /* | |
25 | * virtio-iommu-pci: This extends VirtioPCIProxy. | |
26 | * | |
27 | */ | |
8110fa1d EH |
28 | DECLARE_INSTANCE_CHECKER(VirtIOIOMMUPCI, VIRTIO_IOMMU_PCI, |
29 | TYPE_VIRTIO_IOMMU_PCI) | |
8b4eb09e EA |
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), | |
8077b8e5 EA |
38 | DEFINE_PROP_ARRAY("reserved-regions", VirtIOIOMMUPCI, |
39 | vdev.nb_reserved_regions, vdev.reserved_regions, | |
40 | qdev_prop_reserved_region, ReservedRegion), | |
8b4eb09e EA |
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); | |
8077b8e5 | 48 | VirtIOIOMMU *s = VIRTIO_IOMMU(vdev); |
8b4eb09e EA |
49 | |
50 | if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) { | |
51 | MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); | |
52 | ||
53 | error_setg(errp, | |
54 | "%s machine fails to create iommu-map device tree bindings", | |
55 | mc->name); | |
56 | error_append_hint(errp, | |
590090b4 | 57 | "Check your machine implements a hotplug handler " |
8b4eb09e EA |
58 | "for the virtio-iommu-pci device\n"); |
59 | error_append_hint(errp, "Check the guest is booted without FW or with " | |
60 | "-no-acpi\n"); | |
61 | return; | |
62 | } | |
8077b8e5 EA |
63 | for (int i = 0; i < s->nb_reserved_regions; i++) { |
64 | if (s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_RESERVED && | |
65 | s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_MSI) { | |
66 | error_setg(errp, "reserved region %d has an invalid type", i); | |
67 | error_append_hint(errp, "Valid values are 0 and 1\n"); | |
68 | } | |
69 | } | |
5325cc34 | 70 | object_property_set_link(OBJECT(dev), "primary-bus", |
8b4eb09e | 71 | OBJECT(pci_get_bus(&vpci_dev->pci_dev)), |
5325cc34 | 72 | &error_abort); |
8f39562a | 73 | virtio_pci_force_virtio_1(vpci_dev); |
99ba777e | 74 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
8b4eb09e EA |
75 | } |
76 | ||
77 | static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data) | |
78 | { | |
79 | DeviceClass *dc = DEVICE_CLASS(klass); | |
80 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
81 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
82 | k->realize = virtio_iommu_pci_realize; | |
83 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); | |
84 | device_class_set_props(dc, virtio_iommu_pci_properties); | |
85 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
86 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_IOMMU; | |
87 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
88 | pcidev_k->class_id = PCI_CLASS_OTHERS; | |
89 | dc->hotpluggable = false; | |
90 | } | |
91 | ||
92 | static void virtio_iommu_pci_instance_init(Object *obj) | |
93 | { | |
94 | VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(obj); | |
95 | ||
96 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | |
97 | TYPE_VIRTIO_IOMMU); | |
98 | } | |
99 | ||
100 | static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info = { | |
101 | .base_name = TYPE_VIRTIO_IOMMU_PCI, | |
102 | .generic_name = "virtio-iommu-pci", | |
8b4eb09e EA |
103 | .non_transitional_name = "virtio-iommu-pci-non-transitional", |
104 | .instance_size = sizeof(VirtIOIOMMUPCI), | |
105 | .instance_init = virtio_iommu_pci_instance_init, | |
106 | .class_init = virtio_iommu_pci_class_init, | |
107 | }; | |
108 | ||
109 | static void virtio_iommu_pci_register(void) | |
110 | { | |
111 | virtio_pci_types_register(&virtio_iommu_pci_info); | |
112 | } | |
113 | ||
114 | type_init(virtio_iommu_pci_register) | |
115 | ||
116 |