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vhost-user-rng-pci.c (2419B)

      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);