linux/drivers/gpu/drm/xe/xe_pci_sriov.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2023-2024 Intel Corporation
 */

#include "xe_assert.h"
#include "xe_device.h"
#include "xe_gt_sriov_pf_config.h"
#include "xe_gt_sriov_pf_control.h"
#include "xe_pci_sriov.h"
#include "xe_pm.h"
#include "xe_sriov.h"
#include "xe_sriov_pf_helpers.h"
#include "xe_sriov_printk.h"

static int pf_needs_provisioning(struct xe_gt *gt, unsigned int num_vfs)
{ … }

static int pf_provision_vfs(struct xe_device *xe, unsigned int num_vfs)
{ … }

static void pf_unprovision_vfs(struct xe_device *xe, unsigned int num_vfs)
{ … }

static void pf_reset_vfs(struct xe_device *xe, unsigned int num_vfs)
{ … }

static int pf_enable_vfs(struct xe_device *xe, int num_vfs)
{ … }

static int pf_disable_vfs(struct xe_device *xe)
{ … }

/**
 * xe_pci_sriov_configure - Configure SR-IOV (enable/disable VFs).
 * @pdev: the &pci_dev
 * @num_vfs: number of VFs to enable or zero to disable all VFs
 *
 * This is the Xe implementation of struct pci_driver.sriov_configure callback.
 *
 * This callback will be called by the PCI subsystem to enable or disable SR-IOV
 * Virtual Functions (VFs) as requested by the used via the PCI sysfs interface.
 *
 * Return: number of configured VFs or a negative error code on failure.
 */
int xe_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
{ … }