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"
19 #include "qom/object.h"
21 typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI
;
24 * virtio-iommu-pci: This extends VirtioPCIProxy.
27 DECLARE_INSTANCE_CHECKER(VirtIOIOMMUPCI
, VIRTIO_IOMMU_PCI
,
28 TYPE_VIRTIO_IOMMU_PCI
)
30 struct VirtIOIOMMUPCI
{
31 VirtIOPCIProxy parent_obj
;
35 static Property virtio_iommu_pci_properties
[] = {
36 DEFINE_PROP_UINT32("class", VirtIOPCIProxy
, class_code
, 0),
37 DEFINE_PROP_ARRAY("reserved-regions", VirtIOIOMMUPCI
,
38 vdev
.nb_reserved_regions
, vdev
.reserved_regions
,
39 qdev_prop_reserved_region
, ReservedRegion
),
40 DEFINE_PROP_END_OF_LIST(),
43 static void virtio_iommu_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
45 VirtIOIOMMUPCI
*dev
= VIRTIO_IOMMU_PCI(vpci_dev
);
46 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
47 VirtIOIOMMU
*s
= VIRTIO_IOMMU(vdev
);
49 if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev
))) {
50 MachineClass
*mc
= MACHINE_GET_CLASS(qdev_get_machine());
53 "%s machine fails to create iommu-map device tree bindings",
55 error_append_hint(errp
,
56 "Check your machine implements a hotplug handler "
57 "for the virtio-iommu-pci device\n");
58 error_append_hint(errp
, "Check the guest is booted without FW or with "
62 for (int i
= 0; i
< s
->nb_reserved_regions
; i
++) {
63 if (s
->reserved_regions
[i
].type
!= VIRTIO_IOMMU_RESV_MEM_T_RESERVED
&&
64 s
->reserved_regions
[i
].type
!= VIRTIO_IOMMU_RESV_MEM_T_MSI
) {
65 error_setg(errp
, "reserved region %d has an invalid type", i
);
66 error_append_hint(errp
, "Valid values are 0 and 1\n");
69 object_property_set_link(OBJECT(dev
), "primary-bus",
70 OBJECT(pci_get_bus(&vpci_dev
->pci_dev
)),
72 virtio_pci_force_virtio_1(vpci_dev
);
73 qdev_realize(vdev
, BUS(&vpci_dev
->bus
), errp
);
76 static void virtio_iommu_pci_class_init(ObjectClass
*klass
, void *data
)
78 DeviceClass
*dc
= DEVICE_CLASS(klass
);
79 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
80 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
81 k
->realize
= virtio_iommu_pci_realize
;
82 set_bit(DEVICE_CATEGORY_MISC
, dc
->categories
);
83 device_class_set_props(dc
, virtio_iommu_pci_properties
);
84 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
85 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_IOMMU
;
86 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
87 pcidev_k
->class_id
= PCI_CLASS_OTHERS
;
88 dc
->hotpluggable
= false;
91 static void virtio_iommu_pci_instance_init(Object
*obj
)
93 VirtIOIOMMUPCI
*dev
= VIRTIO_IOMMU_PCI(obj
);
95 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
99 static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info
= {
100 .base_name
= TYPE_VIRTIO_IOMMU_PCI
,
101 .generic_name
= "virtio-iommu-pci",
102 .non_transitional_name
= "virtio-iommu-pci-non-transitional",
103 .instance_size
= sizeof(VirtIOIOMMUPCI
),
104 .instance_init
= virtio_iommu_pci_instance_init
,
105 .class_init
= virtio_iommu_pci_class_init
,
108 static void virtio_iommu_pci_register(void)
110 virtio_pci_types_register(&virtio_iommu_pci_info
);
113 type_init(virtio_iommu_pci_register
)