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103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/*
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* Vhost Vdpa Device PCI Bindings
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*
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* Copyright (c) Huawei Technologies Co., Ltd. 2022. All Rights Reserved.
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*
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* Authors:
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* Longpeng <longpeng2@huawei.com>
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*
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* Largely based on the "vhost-user-blk-pci.c" and "vhost-user-blk.c"
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* implemented by:
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* Changpeng Liu <changpeng.liu@intel.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include <sys/ioctl.h>
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#include <linux/vhost.h>
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#include "hw/virtio/virtio.h"
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#include "hw/virtio/vdpa-dev.h"
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#include "hw/pci/pci.h"
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#include "hw/qdev-properties.h"
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#include "qapi/error.h"
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#include "qemu/error-report.h"
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#include "qemu/module.h"
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#include "hw/virtio/virtio-pci.h"
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#include "qom/object.h"
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typedef struct VhostVdpaDevicePCI VhostVdpaDevicePCI;
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#define TYPE_VHOST_VDPA_DEVICE_PCI "vhost-vdpa-device-pci-base"
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DECLARE_INSTANCE_CHECKER(VhostVdpaDevicePCI, VHOST_VDPA_DEVICE_PCI,
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TYPE_VHOST_VDPA_DEVICE_PCI)
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struct VhostVdpaDevicePCI {
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VirtIOPCIProxy parent_obj;
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VhostVdpaDevice vdev;
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};
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static void vhost_vdpa_device_pci_instance_init(Object *obj)
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{
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VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(obj);
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virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
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TYPE_VHOST_VDPA_DEVICE);
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object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
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"bootindex");
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}
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static Property vhost_vdpa_device_pci_properties[] = {
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DEFINE_PROP_END_OF_LIST(),
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};
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static int vhost_vdpa_device_pci_post_init(VhostVdpaDevice *v, Error **errp)
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{
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VhostVdpaDevicePCI *dev = container_of(v, VhostVdpaDevicePCI, vdev);
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VirtIOPCIProxy *vpci_dev = &dev->parent_obj;
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vpci_dev->class_code = virtio_pci_get_class_id(v->vdev_id);
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vpci_dev->trans_devid = virtio_pci_get_trans_devid(v->vdev_id);
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/* one for config vector */
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vpci_dev->nvectors = v->num_queues + 1;
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return 0;
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}
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static void
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vhost_vdpa_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
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{
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VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(vpci_dev);
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dev->vdev.post_init = vhost_vdpa_device_pci_post_init;
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qdev_realize(DEVICE(&dev->vdev), BUS(&vpci_dev->bus), errp);
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}
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static void vhost_vdpa_device_pci_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
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set_bit(DEVICE_CATEGORY_MISC, dc->categories);
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device_class_set_props(dc, vhost_vdpa_device_pci_properties);
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k->realize = vhost_vdpa_device_pci_realize;
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}
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static const VirtioPCIDeviceTypeInfo vhost_vdpa_device_pci_info = {
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.base_name = TYPE_VHOST_VDPA_DEVICE_PCI,
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.generic_name = "vhost-vdpa-device-pci",
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.transitional_name = "vhost-vdpa-device-pci-transitional",
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.non_transitional_name = "vhost-vdpa-device-pci-non-transitional",
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.instance_size = sizeof(VhostVdpaDevicePCI),
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.instance_init = vhost_vdpa_device_pci_instance_init,
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.class_init = vhost_vdpa_device_pci_class_init,
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};
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static void vhost_vdpa_device_pci_register(void)
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{
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virtio_pci_types_register(&vhost_vdpa_device_pci_info);
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}
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type_init(vhost_vdpa_device_pci_register);
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