2 * Virtio IOMMU PCI Bindings
4 * Copyright (c) 2019 Red Hat, Inc.
5 * Written by Eric Auger
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.
12 #include "qemu/osdep.h"
14 #include "virtio-pci.h"
15 #include "hw/virtio/virtio-iommu.h"
16 #include "hw/qdev-properties.h"
17 #include "qapi/error.h"
18 #include "hw/boards.h"
20 typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI
;
23 * virtio-iommu-pci: This extends VirtioPCIProxy.
26 #define VIRTIO_IOMMU_PCI(obj) \
27 OBJECT_CHECK(VirtIOIOMMUPCI, (obj), TYPE_VIRTIO_IOMMU_PCI)
29 struct VirtIOIOMMUPCI
{
30 VirtIOPCIProxy parent_obj
;
34 static Property virtio_iommu_pci_properties
[] = {
35 DEFINE_PROP_UINT32("class", VirtIOPCIProxy
, class_code
, 0),
36 DEFINE_PROP_ARRAY("reserved-regions", VirtIOIOMMUPCI
,
37 vdev
.nb_reserved_regions
, vdev
.reserved_regions
,
38 qdev_prop_reserved_region
, ReservedRegion
),
39 DEFINE_PROP_END_OF_LIST(),
42 static void virtio_iommu_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
44 VirtIOIOMMUPCI
*dev
= VIRTIO_IOMMU_PCI(vpci_dev
);
45 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
46 VirtIOIOMMU
*s
= VIRTIO_IOMMU(vdev
);
48 if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev
))) {
49 MachineClass
*mc
= MACHINE_GET_CLASS(qdev_get_machine());
52 "%s machine fails to create iommu-map device tree bindings",
54 error_append_hint(errp
,
55 "Check your machine implements a hotplug handler "
56 "for the virtio-iommu-pci device\n");
57 error_append_hint(errp
, "Check the guest is booted without FW or with "
61 for (int i
= 0; i
< s
->nb_reserved_regions
; i
++) {
62 if (s
->reserved_regions
[i
].type
!= VIRTIO_IOMMU_RESV_MEM_T_RESERVED
&&
63 s
->reserved_regions
[i
].type
!= VIRTIO_IOMMU_RESV_MEM_T_MSI
) {
64 error_setg(errp
, "reserved region %d has an invalid type", i
);
65 error_append_hint(errp
, "Valid values are 0 and 1\n");
68 object_property_set_link(OBJECT(dev
), "primary-bus",
69 OBJECT(pci_get_bus(&vpci_dev
->pci_dev
)),
71 qdev_realize(vdev
, BUS(&vpci_dev
->bus
), errp
);
74 static void virtio_iommu_pci_class_init(ObjectClass
*klass
, void *data
)
76 DeviceClass
*dc
= DEVICE_CLASS(klass
);
77 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
78 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
79 k
->realize
= virtio_iommu_pci_realize
;
80 set_bit(DEVICE_CATEGORY_MISC
, dc
->categories
);
81 device_class_set_props(dc
, virtio_iommu_pci_properties
);
82 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
83 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_IOMMU
;
84 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
85 pcidev_k
->class_id
= PCI_CLASS_OTHERS
;
86 dc
->hotpluggable
= false;
89 static void virtio_iommu_pci_instance_init(Object
*obj
)
91 VirtIOIOMMUPCI
*dev
= VIRTIO_IOMMU_PCI(obj
);
93 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
97 static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info
= {
98 .base_name
= TYPE_VIRTIO_IOMMU_PCI
,
99 .generic_name
= "virtio-iommu-pci",
100 .transitional_name
= "virtio-iommu-pci-transitional",
101 .non_transitional_name
= "virtio-iommu-pci-non-transitional",
102 .instance_size
= sizeof(VirtIOIOMMUPCI
),
103 .instance_init
= virtio_iommu_pci_instance_init
,
104 .class_init
= virtio_iommu_pci_class_init
,
107 static void virtio_iommu_pci_register(void)
109 virtio_pci_types_register(&virtio_iommu_pci_info
);
112 type_init(virtio_iommu_pci_register
)