hw/virtio/vhost-user-rng-pci.c

   1 /*
   2  * Vhost-user RNG virtio device PCI glue
   3  *
   4  * Copyright (c) 2021 Mathieu Poirier <mathieu.poirier@linaro.org>
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8
   9 #include "qemu/osdep.h"
  10 #include "hw/qdev-properties.h"
  11 #include "hw/virtio/vhost-user-rng.h"
  12 #include "hw/virtio/virtio-pci.h"
  13
  14 struct VHostUserRNGPCI {
  15     VirtIOPCIProxy parent_obj;
  16     VHostUserRNG vdev;
  17 };
  18
  19 typedef struct VHostUserRNGPCI VHostUserRNGPCI;
  20
  21 #define TYPE_VHOST_USER_RNG_PCI "vhost-user-rng-pci-base"
  22
  23 DECLARE_INSTANCE_CHECKER(VHostUserRNGPCI, VHOST_USER_RNG_PCI,
  24                          TYPE_VHOST_USER_RNG_PCI)
  25
  26 static Property vhost_user_rng_pci_properties[] = {
  27     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
  28                        DEV_NVECTORS_UNSPECIFIED),
  29     DEFINE_PROP_END_OF_LIST(),
  30 };
  31
  32 static void vhost_user_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  33 {
  34     VHostUserRNGPCI *dev = VHOST_USER_RNG_PCI(vpci_dev);
  35     DeviceState *vdev = DEVICE(&dev->vdev);
  36
  37     if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
  38         vpci_dev->nvectors = 1;
  39     }
  40
  41     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  42 }
  43
  44 static void vhost_user_rng_pci_class_init(ObjectClass *klass, void *data)
  45 {
  46     DeviceClass *dc = DEVICE_CLASS(klass);
  47     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  48     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  49     k->realize = vhost_user_rng_pci_realize;
  50     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
  51     device_class_set_props(dc, vhost_user_rng_pci_properties);
  52     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  53     pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
  54     pcidev_k->revision = 0x00;
  55     pcidev_k->class_id = PCI_CLASS_OTHERS;
  56 }
  57
  58 static void vhost_user_rng_pci_instance_init(Object *obj)
  59 {
  60     VHostUserRNGPCI *dev = VHOST_USER_RNG_PCI(obj);
  61
  62     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  63                                 TYPE_VHOST_USER_RNG);
  64 }
  65
  66 static const VirtioPCIDeviceTypeInfo vhost_user_rng_pci_info = {
  67     .base_name = TYPE_VHOST_USER_RNG_PCI,
  68     .non_transitional_name = "vhost-user-rng-pci",
  69     .instance_size = sizeof(VHostUserRNGPCI),
  70     .instance_init = vhost_user_rng_pci_instance_init,
  71     .class_init = vhost_user_rng_pci_class_init,
  72 };
  73
  74 static void vhost_user_rng_pci_register(void)
  75 {
  76     virtio_pci_types_register(&vhost_user_rng_pci_info);
  77 }
  78
  79 type_init(vhost_user_rng_pci_register);