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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2023 Advanced Micro Devices, Inc. */
#include <linux/vfio.h>
#include <linux/vfio_pci_core.h>
#include "vfio_dev.h"
struct pci_dev *pds_vfio_to_pci_dev(struct pds_vfio_pci_device *pds_vfio)
{
return pds_vfio->vfio_coredev.pdev;
}
struct pds_vfio_pci_device *pds_vfio_pci_drvdata(struct pci_dev *pdev)
{
struct vfio_pci_core_device *core_device = dev_get_drvdata(&pdev->dev);
return container_of(core_device, struct pds_vfio_pci_device,
vfio_coredev);
}
static int pds_vfio_init_device(struct vfio_device *vdev)
{
struct pds_vfio_pci_device *pds_vfio =
container_of(vdev, struct pds_vfio_pci_device,
vfio_coredev.vdev);
struct pci_dev *pdev = to_pci_dev(vdev->dev);
int err, vf_id, pci_id;
vf_id = pci_iov_vf_id(pdev);
if (vf_id < 0)
return vf_id;
err = vfio_pci_core_init_dev(vdev);
if (err)
return err;
pds_vfio->vf_id = vf_id;
pci_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
dev_dbg(&pdev->dev,
"%s: PF %#04x VF %#04x vf_id %d domain %d pds_vfio %p\n",
__func__, pci_dev_id(pdev->physfn), pci_id, vf_id,
pci_domain_nr(pdev->bus), pds_vfio);
return 0;
}
static int pds_vfio_open_device(struct vfio_device *vdev)
{
struct pds_vfio_pci_device *pds_vfio =
container_of(vdev, struct pds_vfio_pci_device,
vfio_coredev.vdev);
int err;
err = vfio_pci_core_enable(&pds_vfio->vfio_coredev);
if (err)
return err;
vfio_pci_core_finish_enable(&pds_vfio->vfio_coredev);
return 0;
}
static const struct vfio_device_ops pds_vfio_ops = {
.name = "pds-vfio",
.init = pds_vfio_init_device,
.release = vfio_pci_core_release_dev,
.open_device = pds_vfio_open_device,
.close_device = vfio_pci_core_close_device,
.ioctl = vfio_pci_core_ioctl,
.device_feature = vfio_pci_core_ioctl_feature,
.read = vfio_pci_core_read,
.write = vfio_pci_core_write,
.mmap = vfio_pci_core_mmap,
.request = vfio_pci_core_request,
.match = vfio_pci_core_match,
.bind_iommufd = vfio_iommufd_physical_bind,
.unbind_iommufd = vfio_iommufd_physical_unbind,
.attach_ioas = vfio_iommufd_physical_attach_ioas,
};
const struct vfio_device_ops *pds_vfio_ops_info(void)
{
return &pds_vfio_ops;
}
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