hw/virtio/virtio-9p-pci.c

   1 /*
   2  * Virtio 9p PCI Bindings
   3  *
   4  * Copyright IBM, Corp. 2010
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  * Contributions after 2012-01-13 are licensed under the terms of the
  13  * GNU GPL, version 2 or (at your option) any later version.
  14  */
  15
  16 #include "qemu/osdep.h"
  17
  18 #include "hw/virtio/virtio-pci.h"
  19 #include "hw/9pfs/virtio-9p.h"
  20 #include "hw/qdev-properties.h"
  21 #include "qemu/module.h"
  22 #include "qom/object.h"
  23
  24 /*
  25  * virtio-9p-pci: This extends VirtioPCIProxy.
  26  */
  27
  28 #define TYPE_VIRTIO_9P_PCI "virtio-9p-pci-base"
  29 typedef struct V9fsPCIState V9fsPCIState;
  30 DECLARE_INSTANCE_CHECKER(V9fsPCIState, VIRTIO_9P_PCI,
  31                          TYPE_VIRTIO_9P_PCI)
  32
  33 struct V9fsPCIState {
  34     VirtIOPCIProxy parent_obj;
  35     V9fsVirtioState vdev;
  36 };
  37
  38 static void virtio_9p_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  39 {
  40     V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev);
  41     DeviceState *vdev = DEVICE(&dev->vdev);
  42
  43     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  44 }
  45
  46 static Property virtio_9p_pci_properties[] = {
  47     DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
  48                     VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
  49     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
  50     DEFINE_PROP_END_OF_LIST(),
  51 };
  52
  53 static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
  54 {
  55     DeviceClass *dc = DEVICE_CLASS(klass);
  56     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  57     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  58
  59     k->realize = virtio_9p_pci_realize;
  60     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  61     pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
  62     pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
  63     pcidev_k->class_id = 0x2;
  64     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
  65     device_class_set_props(dc, virtio_9p_pci_properties);
  66 }
  67
  68 static void virtio_9p_pci_instance_init(Object *obj)
  69 {
  70     V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
  71
  72     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  73                                 TYPE_VIRTIO_9P);
  74 }
  75
  76 static const VirtioPCIDeviceTypeInfo virtio_9p_pci_info = {
  77     .base_name              = TYPE_VIRTIO_9P_PCI,
  78     .generic_name           = "virtio-9p-pci",
  79     .transitional_name      = "virtio-9p-pci-transitional",
  80     .non_transitional_name  = "virtio-9p-pci-non-transitional",
  81     .instance_size = sizeof(V9fsPCIState),
  82     .instance_init = virtio_9p_pci_instance_init,
  83     .class_init    = virtio_9p_pci_class_init,
  84 };
  85
  86 static void virtio_9p_pci_register(void)
  87 {
  88     virtio_pci_types_register(&virtio_9p_pci_info);
  89 }
  90
  91 type_init(virtio_9p_pci_register)