1 files changed, 112 insertions, 0 deletions
diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c
new file mode 100644
index 00000000..7ef2f9dc
--- /dev/null
+++ b/hw/virtio/virtio-iommu-pci.c
@@ -0,0 +1,112 @@
+/*
+ * 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 "hw/virtio/virtio-pci.h"
+#include "hw/virtio/virtio-iommu.h"
+#include "hw/qdev-properties.h"
+#include "hw/qdev-properties-system.h"
+#include "qapi/error.h"
+#include "hw/boards.h"
+#include "hw/pci/pci_bus.h"
+#include "qom/object.h"
+
+typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI;
+
+/*
+ * virtio-iommu-pci: This extends VirtioPCIProxy.
+ *
+ */
+DECLARE_INSTANCE_CHECKER(VirtIOIOMMUPCI, VIRTIO_IOMMU_PCI,
+                         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_ARRAY("reserved-regions", VirtIOIOMMUPCI,
+                      vdev.nb_reserved_regions, vdev.reserved_regions,
+                      qdev_prop_reserved_region, ReservedRegion),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+    VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(vpci_dev);
+    PCIBus *pbus = pci_get_bus(&vpci_dev->pci_dev);
+    DeviceState *vdev = DEVICE(&dev->vdev);
+    VirtIOIOMMU *s = VIRTIO_IOMMU(vdev);
+
+    if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) {
+        error_setg(errp, "Check your machine implements a hotplug handler "
+                         "for the virtio-iommu-pci device");
+        return;
+    }
+    for (int i = 0; i < s->nb_reserved_regions; i++) {
+        if (s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_RESERVED &&
+            s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_MSI) {
+            error_setg(errp, "reserved region %d has an invalid type", i);
+            error_append_hint(errp, "Valid values are 0 and 1\n");
+            return;
+        }
+    }
+    if (!pci_bus_is_root(pbus)) {
+        error_setg(errp, "virtio-iommu-pci must be plugged on the root bus");
+        return;
+    }
+
+    object_property_set_link(OBJECT(dev), "primary-bus",
+                             OBJECT(pbus), &error_abort);
+
+    virtio_pci_force_virtio_1(vpci_dev);
+    qdev_realize(vdev, BUS(&vpci_dev->bus), 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->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 = {
+    .generic_name  = TYPE_VIRTIO_IOMMU_PCI,
+    .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)
+
+