diff options
Diffstat (limited to 'hw/virtio/virtio-iommu-pci.c')
| -rw-r--r-- | hw/virtio/virtio-iommu-pci.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c new file mode 100644 index 0000000000..3dfbf55b47 --- /dev/null +++ b/hw/virtio/virtio-iommu-pci.c @@ -0,0 +1,104 @@ +/* + * Virtio IOMMU PCI Bindings + * + * Copyright (c) 2019 Red Hat, Inc. + * Written by Eric Auger + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +#include "qemu/osdep.h" + +#include "virtio-pci.h" +#include "hw/virtio/virtio-iommu.h" +#include "hw/qdev-properties.h" +#include "qapi/error.h" +#include "hw/boards.h" + +typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI; + +/* + * virtio-iommu-pci: This extends VirtioPCIProxy. + * + */ +#define VIRTIO_IOMMU_PCI(obj) \ + OBJECT_CHECK(VirtIOIOMMUPCI, (obj), TYPE_VIRTIO_IOMMU_PCI) + +struct VirtIOIOMMUPCI { + VirtIOPCIProxy parent_obj; + VirtIOIOMMU vdev; +}; + +static Property virtio_iommu_pci_properties[] = { + DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) +{ + VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(vpci_dev); + DeviceState *vdev = DEVICE(&dev->vdev); + + if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) { + MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); + + error_setg(errp, + "%s machine fails to create iommu-map device tree bindings", + mc->name); + error_append_hint(errp, + "Check you machine implements a hotplug handler " + "for the virtio-iommu-pci device\n"); + error_append_hint(errp, "Check the guest is booted without FW or with " + "-no-acpi\n"); + return; + } + qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); + object_property_set_link(OBJECT(dev), + OBJECT(pci_get_bus(&vpci_dev->pci_dev)), + "primary-bus", errp); + object_property_set_bool(OBJECT(vdev), true, "realized", errp); +} + +static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); + PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); + k->realize = virtio_iommu_pci_realize; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + device_class_set_props(dc, virtio_iommu_pci_properties); + pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; + pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_IOMMU; + pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; + pcidev_k->class_id = PCI_CLASS_OTHERS; + dc->hotpluggable = false; +} + +static void virtio_iommu_pci_instance_init(Object *obj) +{ + VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(obj); + + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), + TYPE_VIRTIO_IOMMU); +} + +static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info = { + .base_name = TYPE_VIRTIO_IOMMU_PCI, + .generic_name = "virtio-iommu-pci", + .transitional_name = "virtio-iommu-pci-transitional", + .non_transitional_name = "virtio-iommu-pci-non-transitional", + .instance_size = sizeof(VirtIOIOMMUPCI), + .instance_init = virtio_iommu_pci_instance_init, + .class_init = virtio_iommu_pci_class_init, +}; + +static void virtio_iommu_pci_register(void) +{ + virtio_pci_types_register(&virtio_iommu_pci_info); +} + +type_init(virtio_iommu_pci_register) + + |