Differential D21959 Diff 69935 sys/dev/ice/ice_features.h

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sys/dev/ice/ice_features.h

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				/* SPDX-License-Identifier: BSD-3-Clause */
				/* Copyright (c) 2020, Intel Corporation
				* All rights reserved.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions are met:
				*
				* 1. Redistributions of source code must retain the above copyright notice,
				* this list of conditions and the following disclaimer.
				*
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* 3. Neither the name of the Intel Corporation nor the names of its
				* contributors may be used to endorse or promote products derived from
				* this software without specific prior written permission.
				*
				* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
				* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
				* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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				* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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				/$FreeBSD$/

				/**
				* @file ice_features.h
				* @brief device feature controls
				*
				* Contains a list of various device features which could be enabled or
				* disabled.
				*/

				#ifndef _ICE_FEATURES_H_
				#define _ICE_FEATURES_H_

				/**
				* @enum feat_list
				* @brief driver feature enumeration
				*
				* Enumeration of possible device driver features that can be enabled or
				* disabled. Each possible value represents a different feature which can be
				* enabled or disabled.
				*
				* The driver stores a bitmap of the features that the device and OS are
				* capable of, as well as another bitmap indicating which features are
				* currently enabled for that device.
				*/
				enum feat_list {
				ICE_FEATURE_SRIOV,
				ICE_FEATURE_RSS,
				ICE_FEATURE_NETMAP,
				ICE_FEATURE_FDIR,
				ICE_FEATURE_MSI,
				ICE_FEATURE_MSIX,
				ICE_FEATURE_RDMA,
				ICE_FEATURE_SAFE_MODE,
				ICE_FEATURE_LENIENT_LINK_MODE,
				ICE_FEATURE_DEFAULT_OVERRIDE,
				/* Must be last entry */
				ICE_FEATURE_COUNT
				};

				/**
				* ice_disable_unsupported_features - Disable features not enabled by OS
				* @bitmap: the feature bitmap
				*
				* Check for OS support of various driver features. Clear the feature bit for
				* any feature which is not enabled by the OS. This should be called early
				* during driver attach after setting up the feature bitmap.
				*
				* @remark the bitmap parameter is marked as unused in order to avoid an
				* unused parameter warning in case none of the features need to be disabled.
				*/
				static inline void
				ice_disable_unsupported_features(ice_bitmap_t __unused *bitmap)
				{
				ice_clear_bit(ICE_FEATURE_SRIOV, bitmap);
				#ifndef DEV_NETMAP
				ice_clear_bit(ICE_FEATURE_NETMAP, bitmap);
				#endif
				}

				#endif