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Supports vdpa-dev-pci, we can use the device as follow: -device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Longpeng <longpeng2@huawei.com> Message-Id: <20221215134944.2809-4-longpeng2@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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/* | ||
* Vhost Vdpa Device PCI Bindings | ||
* | ||
* Copyright (c) Huawei Technologies Co., Ltd. 2022. All Rights Reserved. | ||
* | ||
* Authors: | ||
* Longpeng <longpeng2@huawei.com> | ||
* | ||
* Largely based on the "vhost-user-blk-pci.c" and "vhost-user-blk.c" | ||
* implemented by: | ||
* Changpeng Liu <changpeng.liu@intel.com> | ||
* | ||
* This work is licensed under the terms of the GNU LGPL, version 2 or later. | ||
* See the COPYING.LIB file in the top-level directory. | ||
*/ | ||
#include "qemu/osdep.h" | ||
#include <sys/ioctl.h> | ||
#include <linux/vhost.h> | ||
#include "hw/virtio/virtio.h" | ||
#include "hw/virtio/vdpa-dev.h" | ||
#include "hw/pci/pci.h" | ||
#include "hw/qdev-properties.h" | ||
#include "qapi/error.h" | ||
#include "qemu/error-report.h" | ||
#include "qemu/module.h" | ||
#include "hw/virtio/virtio-pci.h" | ||
#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" | ||
DECLARE_INSTANCE_CHECKER(VhostVdpaDevicePCI, VHOST_VDPA_DEVICE_PCI, | ||
TYPE_VHOST_VDPA_DEVICE_PCI) | ||
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struct VhostVdpaDevicePCI { | ||
VirtIOPCIProxy parent_obj; | ||
VhostVdpaDevice vdev; | ||
}; | ||
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static void vhost_vdpa_device_pci_instance_init(Object *obj) | ||
{ | ||
VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(obj); | ||
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virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | ||
TYPE_VHOST_VDPA_DEVICE); | ||
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), | ||
"bootindex"); | ||
} | ||
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static Property vhost_vdpa_device_pci_properties[] = { | ||
DEFINE_PROP_END_OF_LIST(), | ||
}; | ||
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static int vhost_vdpa_device_pci_post_init(VhostVdpaDevice *v, Error **errp) | ||
{ | ||
VhostVdpaDevicePCI *dev = container_of(v, VhostVdpaDevicePCI, vdev); | ||
VirtIOPCIProxy *vpci_dev = &dev->parent_obj; | ||
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vpci_dev->class_code = virtio_pci_get_class_id(v->vdev_id); | ||
vpci_dev->trans_devid = virtio_pci_get_trans_devid(v->vdev_id); | ||
/* one for config vector */ | ||
vpci_dev->nvectors = v->num_queues + 1; | ||
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return 0; | ||
} | ||
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static void | ||
vhost_vdpa_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | ||
{ | ||
VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(vpci_dev); | ||
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dev->vdev.post_init = vhost_vdpa_device_pci_post_init; | ||
qdev_realize(DEVICE(&dev->vdev), BUS(&vpci_dev->bus), errp); | ||
} | ||
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static void vhost_vdpa_device_pci_class_init(ObjectClass *klass, void *data) | ||
{ | ||
DeviceClass *dc = DEVICE_CLASS(klass); | ||
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | ||
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set_bit(DEVICE_CATEGORY_MISC, dc->categories); | ||
device_class_set_props(dc, vhost_vdpa_device_pci_properties); | ||
k->realize = vhost_vdpa_device_pci_realize; | ||
} | ||
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static const VirtioPCIDeviceTypeInfo vhost_vdpa_device_pci_info = { | ||
.base_name = TYPE_VHOST_VDPA_DEVICE_PCI, | ||
.generic_name = "vhost-vdpa-device-pci", | ||
.transitional_name = "vhost-vdpa-device-pci-transitional", | ||
.non_transitional_name = "vhost-vdpa-device-pci-non-transitional", | ||
.instance_size = sizeof(VhostVdpaDevicePCI), | ||
.instance_init = vhost_vdpa_device_pci_instance_init, | ||
.class_init = vhost_vdpa_device_pci_class_init, | ||
}; | ||
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static void vhost_vdpa_device_pci_register(void) | ||
{ | ||
virtio_pci_types_register(&vhost_vdpa_device_pci_info); | ||
} | ||
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type_init(vhost_vdpa_device_pci_register); |