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

   1 /*
   2  * Vhost-user gpio virtio device PCI glue
   3  *
   4  * Copyright (c) 2022 Viresh Kumar <viresh.kumar@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-gpio.h"
  12 #include "hw/virtio/virtio-pci.h"
  13
  14 struct VHostUserGPIOPCI {
  15     VirtIOPCIProxy parent_obj;
  16     VHostUserGPIO vdev;
  17 };
  18
  19 typedef struct VHostUserGPIOPCI VHostUserGPIOPCI;
  20
  21 #define TYPE_VHOST_USER_GPIO_PCI "vhost-user-gpio-pci-base"
  22
  23 DECLARE_INSTANCE_CHECKER(VHostUserGPIOPCI, VHOST_USER_GPIO_PCI,
  24                          TYPE_VHOST_USER_GPIO_PCI)
  25
  26 static void vhost_user_gpio_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  27 {
  28     VHostUserGPIOPCI *dev = VHOST_USER_GPIO_PCI(vpci_dev);
  29     DeviceState *vdev = DEVICE(&dev->vdev);
  30
  31     vpci_dev->nvectors = 1;
  32     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  33 }
  34
  35 static void vhost_user_gpio_pci_class_init(ObjectClass *klass, void *data)
  36 {
  37     DeviceClass *dc = DEVICE_CLASS(klass);
  38     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  39     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  40     k->realize = vhost_user_gpio_pci_realize;
  41     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
  42     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  43     pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
  44     pcidev_k->revision = 0x00;
  45     pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
  46 }
  47
  48 static void vhost_user_gpio_pci_instance_init(Object *obj)
  49 {
  50     VHostUserGPIOPCI *dev = VHOST_USER_GPIO_PCI(obj);
  51
  52     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  53                                 TYPE_VHOST_USER_GPIO);
  54 }
  55
  56 static const VirtioPCIDeviceTypeInfo vhost_user_gpio_pci_info = {
  57     .base_name = TYPE_VHOST_USER_GPIO_PCI,
  58     .non_transitional_name = "vhost-user-gpio-pci",
  59     .instance_size = sizeof(VHostUserGPIOPCI),
  60     .instance_init = vhost_user_gpio_pci_instance_init,
  61     .class_init = vhost_user_gpio_pci_class_init,
  62 };
  63
  64 static void vhost_user_gpio_pci_register(void)
  65 {
  66     virtio_pci_types_register(&vhost_user_gpio_pci_info);
  67 }
  68
  69 type_init(vhost_user_gpio_pci_register);