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vdpa: add vdpa-dev-pci support

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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>
This commit is contained in:
Longpeng 2022-12-15 21:49:42 +08:00 committed by Michael S. Tsirkin
parent b430a2bd23
commit fedda61746
2 changed files with 103 additions and 0 deletions
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1
hw/virtio/meson.build
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@ -57,6 +57,7 @@ virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-serial-pc
virtio_pci_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true: files('virtio-pmem-pci.c'))
virtio_pci_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu-pci.c'))
virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem-pci.c'))
virtio_pci_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev-pci.c'))
virtio_ss.add_all(when: 'CONFIG_VIRTIO_PCI', if_true: virtio_pci_ss)

102
hw/virtio/vdpa-dev-pci.c Normal file
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@ -0,0 +1,102 @@
/*
* 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"
typedef struct VhostVdpaDevicePCI VhostVdpaDevicePCI;
#define TYPE_VHOST_VDPA_DEVICE_PCI "vhost-vdpa-device-pci-base"
DECLARE_INSTANCE_CHECKER(VhostVdpaDevicePCI, VHOST_VDPA_DEVICE_PCI,
TYPE_VHOST_VDPA_DEVICE_PCI)
struct VhostVdpaDevicePCI {
VirtIOPCIProxy parent_obj;
VhostVdpaDevice vdev;
};
static void vhost_vdpa_device_pci_instance_init(Object *obj)
{
VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_VDPA_DEVICE);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex");
}
static Property vhost_vdpa_device_pci_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
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;
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;
return 0;
}
static void
vhost_vdpa_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(vpci_dev);
dev->vdev.post_init = vhost_vdpa_device_pci_post_init;
qdev_realize(DEVICE(&dev->vdev), BUS(&vpci_dev->bus), errp);
}
static void vhost_vdpa_device_pci_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
device_class_set_props(dc, vhost_vdpa_device_pci_properties);
k->realize = vhost_vdpa_device_pci_realize;
}
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,
};
static void vhost_vdpa_device_pci_register(void)
{
virtio_pci_types_register(&vhost_vdpa_device_pci_info);
}
type_init(vhost_vdpa_device_pci_register);