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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2023 Advanced Micro Devices, Inc. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/types.h>
#include <linux/vfio.h>
#include <linux/pds/pds_common.h>
#include <linux/pds/pds_core_if.h>
#include <linux/pds/pds_adminq.h>
#include "vfio_dev.h"
#include "pci_drv.h"
#include "cmds.h"
#define PDS_VFIO_DRV_DESCRIPTION "AMD/Pensando VFIO Device Driver"
#define PCI_VENDOR_ID_PENSANDO 0x1dd8
static int pds_vfio_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct pds_vfio_pci_device *pds_vfio;
int err;
pds_vfio = vfio_alloc_device(pds_vfio_pci_device, vfio_coredev.vdev,
&pdev->dev, pds_vfio_ops_info());
if (IS_ERR(pds_vfio))
return PTR_ERR(pds_vfio);
dev_set_drvdata(&pdev->dev, &pds_vfio->vfio_coredev);
err = vfio_pci_core_register_device(&pds_vfio->vfio_coredev);
if (err)
goto out_put_vdev;
err = pds_vfio_register_client_cmd(pds_vfio);
if (err) {
dev_err(&pdev->dev, "failed to register as client: %pe\n",
ERR_PTR(err));
goto out_unregister_coredev;
}
return 0;
out_unregister_coredev:
vfio_pci_core_unregister_device(&pds_vfio->vfio_coredev);
out_put_vdev:
vfio_put_device(&pds_vfio->vfio_coredev.vdev);
return err;
}
static void pds_vfio_pci_remove(struct pci_dev *pdev)
{
struct pds_vfio_pci_device *pds_vfio = pds_vfio_pci_drvdata(pdev);
pds_vfio_unregister_client_cmd(pds_vfio);
vfio_pci_core_unregister_device(&pds_vfio->vfio_coredev);
vfio_put_device(&pds_vfio->vfio_coredev.vdev);
}
static const struct pci_device_id pds_vfio_pci_table[] = {
{ PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_PENSANDO, 0x1003) }, /* Ethernet VF */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, pds_vfio_pci_table);
static void pds_vfio_pci_aer_reset_done(struct pci_dev *pdev)
{
struct pds_vfio_pci_device *pds_vfio = pds_vfio_pci_drvdata(pdev);
pds_vfio_reset(pds_vfio);
}
static const struct pci_error_handlers pds_vfio_pci_err_handlers = {
.reset_done = pds_vfio_pci_aer_reset_done,
.error_detected = vfio_pci_core_aer_err_detected,
};
static struct pci_driver pds_vfio_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = pds_vfio_pci_table,
.probe = pds_vfio_pci_probe,
.remove = pds_vfio_pci_remove,
.err_handler = &pds_vfio_pci_err_handlers,
.driver_managed_dma = true,
};
module_pci_driver(pds_vfio_pci_driver);
MODULE_DESCRIPTION(PDS_VFIO_DRV_DESCRIPTION);
MODULE_AUTHOR("Brett Creeley <brett.creeley@amd.com>");
MODULE_LICENSE("GPL");
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