1 /* 2 * Virtio balloon PCI Bindings 3 * 4 * Copyright IBM, Corp. 2007 5 * Copyright (c) 2009 CodeSourcery 6 * 7 * Authors: 8 * Anthony Liguori <aliguori@us.ibm.com> 9 * Paul Brook <paul@codesourcery.com> 10 * 11 * Contributions after 2012-01-13 are licensed under the terms of the 12 * GNU GPL, version 2 or (at your option) any later version. 13 */ 14 15 #include "qemu/osdep.h" 16 17 #include "hw/virtio/virtio-pci.h" 18 #include "hw/qdev-properties.h" 19 #include "hw/virtio/virtio-balloon.h" 20 #include "qapi/error.h" 21 #include "qemu/module.h" 22 #include "qom/object.h" 23 24 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI; 25 26 /* 27 * virtio-balloon-pci: This extends VirtioPCIProxy. 28 */ 29 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci-base" 30 DECLARE_INSTANCE_CHECKER(VirtIOBalloonPCI, VIRTIO_BALLOON_PCI, 31 TYPE_VIRTIO_BALLOON_PCI) 32 33 struct VirtIOBalloonPCI { 34 VirtIOPCIProxy parent_obj; 35 VirtIOBalloon vdev; 36 }; 37 38 static const Property virtio_balloon_properties[] = { 39 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 40 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), 41 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 42 DEV_NVECTORS_UNSPECIFIED), 43 }; 44 45 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 46 { 47 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev); 48 DeviceState *vdev = DEVICE(&dev->vdev); 49 50 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 51 vpci_dev->nvectors = 2; 52 } 53 54 vpci_dev->class_code = PCI_CLASS_OTHERS; 55 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 56 } 57 58 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data) 59 { 60 DeviceClass *dc = DEVICE_CLASS(klass); 61 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 62 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 63 k->realize = virtio_balloon_pci_realize; 64 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 65 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 66 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; 67 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; 68 pcidev_k->class_id = PCI_CLASS_OTHERS; 69 device_class_set_props(dc, virtio_balloon_properties); 70 } 71 72 static void virtio_balloon_pci_instance_init(Object *obj) 73 { 74 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj); 75 76 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 77 TYPE_VIRTIO_BALLOON); 78 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), 79 "guest-stats"); 80 object_property_add_alias(obj, "guest-stats-polling-interval", 81 OBJECT(&dev->vdev), 82 "guest-stats-polling-interval"); 83 } 84 85 static const VirtioPCIDeviceTypeInfo virtio_balloon_pci_info = { 86 .base_name = TYPE_VIRTIO_BALLOON_PCI, 87 .generic_name = "virtio-balloon-pci", 88 .transitional_name = "virtio-balloon-pci-transitional", 89 .non_transitional_name = "virtio-balloon-pci-non-transitional", 90 .instance_size = sizeof(VirtIOBalloonPCI), 91 .instance_init = virtio_balloon_pci_instance_init, 92 .class_init = virtio_balloon_pci_class_init, 93 }; 94 95 static void virtio_balloon_pci_register(void) 96 { 97 virtio_pci_types_register(&virtio_balloon_pci_info); 98 } 99 100 type_init(virtio_balloon_pci_register) 101