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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2023 Intel Corporation
*/
#ifndef _XE_SRIOV_TYPES_H_
#define _XE_SRIOV_TYPES_H_
#include <linux/build_bug.h>
#include <linux/mutex.h>
#include <linux/types.h>
/**
* VFID - Virtual Function Identifier
* @n: VF number
*
* Helper macro to represent Virtual Function (VF) Identifier.
* VFID(0) is used as alias to the PFID that represents Physical Function.
*
* Note: According to PCI spec, SR-IOV VF's numbers are 1-based (VF1, VF2, ...).
*/
#define VFID(n) (n)
#define PFID VFID(0)
/**
* enum xe_sriov_mode - SR-IOV mode
* @XE_SRIOV_MODE_NONE: bare-metal mode (non-virtualized)
* @XE_SRIOV_MODE_PF: SR-IOV Physical Function (PF) mode
* @XE_SRIOV_MODE_VF: SR-IOV Virtual Function (VF) mode
*/
enum xe_sriov_mode {
/*
* Note: We don't use default enum value 0 to allow catch any too early
* attempt of checking the SR-IOV mode prior to the actual mode probe.
*/
XE_SRIOV_MODE_NONE = 1,
XE_SRIOV_MODE_PF,
XE_SRIOV_MODE_VF,
};
static_assert(XE_SRIOV_MODE_NONE);
/**
* struct xe_device_pf - Xe PF related data
*
* The data in this structure is valid only if driver is running in the
* @XE_SRIOV_MODE_PF mode.
*/
struct xe_device_pf {
/** @device_total_vfs: Maximum number of VFs supported by the device. */
u16 device_total_vfs;
/** @driver_max_vfs: Maximum number of VFs supported by the driver. */
u16 driver_max_vfs;
/** @master_lock: protects all VFs configurations across GTs */
struct mutex master_lock;
};
#endif
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