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 "qapi/error.h" 18 #include "hw/boards.h" 19 20 typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI; 21 22 /* 23 * virtio-iommu-pci: This extends VirtioPCIProxy. 24 * 25 */ 26 #define VIRTIO_IOMMU_PCI(obj) \ 27 OBJECT_CHECK(VirtIOIOMMUPCI, (obj), TYPE_VIRTIO_IOMMU_PCI) 28 29 struct VirtIOIOMMUPCI { 30 VirtIOPCIProxy parent_obj; 31 VirtIOIOMMU vdev; 32 }; 33 34 static Property virtio_iommu_pci_properties[] = { 35 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), 36 DEFINE_PROP_END_OF_LIST(), 37 }; 38 39 static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 40 { 41 VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(vpci_dev); 42 DeviceState *vdev = DEVICE(&dev->vdev); 43 44 if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) { 45 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); 46 47 error_setg(errp, 48 "%s machine fails to create iommu-map device tree bindings", 49 mc->name); 50 error_append_hint(errp, 51 "Check you machine implements a hotplug handler " 52 "for the virtio-iommu-pci device\n"); 53 error_append_hint(errp, "Check the guest is booted without FW or with " 54 "-no-acpi\n"); 55 return; 56 } 57 object_property_set_link(OBJECT(dev), 58 OBJECT(pci_get_bus(&vpci_dev->pci_dev)), 59 "primary-bus", errp); 60 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 61 } 62 63 static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data) 64 { 65 DeviceClass *dc = DEVICE_CLASS(klass); 66 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 67 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 68 k->realize = virtio_iommu_pci_realize; 69 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 70 device_class_set_props(dc, virtio_iommu_pci_properties); 71 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 72 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_IOMMU; 73 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; 74 pcidev_k->class_id = PCI_CLASS_OTHERS; 75 dc->hotpluggable = false; 76 } 77 78 static void virtio_iommu_pci_instance_init(Object *obj) 79 { 80 VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(obj); 81 82 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 83 TYPE_VIRTIO_IOMMU); 84 } 85 86 static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info = { 87 .base_name = TYPE_VIRTIO_IOMMU_PCI, 88 .generic_name = "virtio-iommu-pci", 89 .transitional_name = "virtio-iommu-pci-transitional", 90 .non_transitional_name = "virtio-iommu-pci-non-transitional", 91 .instance_size = sizeof(VirtIOIOMMUPCI), 92 .instance_init = virtio_iommu_pci_instance_init, 93 .class_init = virtio_iommu_pci_class_init, 94 }; 95 96 static void virtio_iommu_pci_register(void) 97 { 98 virtio_pci_types_register(&virtio_iommu_pci_info); 99 } 100 101 type_init(virtio_iommu_pci_register) 102 103 104