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1041167668
Remove the usage of __must_check compiler directive. Also rename __user as nvgpu_user and make the required changes for linux and posix builds. Jira NVGPU-4903 Change-Id: If4a18761cca84eb12e0babc0d528666673fca9e8 Signed-off-by: ajesh <akv@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2283404 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit
143 lines
3.6 KiB
C
143 lines
3.6 KiB
C
/*
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* Copyright (c) 2018-2020, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef NVGPU_UTILS_H
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#define NVGPU_UTILS_H
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#include <nvgpu/types.h>
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#include <nvgpu/static_analysis.h>
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#ifdef __KERNEL__
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#include <nvgpu/linux/utils.h>
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#else
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#include <nvgpu/posix/utils.h>
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#endif
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/**
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* @file
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*
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* SW utilities
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*
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* @defgroup unit-common-utils
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*/
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/**
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* @defgroup bit-utils
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* @ingroup unit-common-utils
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* @{
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*/
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/** Stringification macro. */
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#define nvgpu_stringify(x) #x
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/**
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* @brief Higher 32 bits from 64 bit.
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*
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* @param n [in] Input value.
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*
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* Returns the most significant 32 bits of the 64 bit input value.
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*
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* @return Most significant 32 bits of \a n.
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*/
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static inline u32 u64_hi32(u64 n)
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{
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return nvgpu_safe_cast_u64_to_u32(n >> 32);
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}
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/**
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* @brief Lower 32 bits from 64 bit.
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*
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* @param n [in] Input value.
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*
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* Returns the least significant 32 bits of the 64 bit input value.
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*
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* @return Least significant 32 bits of \a n.
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*/
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static inline u32 u64_lo32(u64 n)
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{
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return nvgpu_safe_cast_u64_to_u32(n & ~(u32)0);
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}
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/**
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* @brief 64 bit from two 32 bit values.
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*
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* @param hi [in] Higher 32 bits.
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* @param lo [in] Lower 32 bits.
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*
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* Returns a 64 bit value by combining the two 32 bit input values.
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*
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* @return 64 bit value of which the least significant 32 bits are \a lo and
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* most significant 32 bits are \a hi.
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*/
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static inline u64 hi32_lo32_to_u64(u32 hi, u32 lo)
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{
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return (((u64)hi) << 32) | (u64)lo;
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}
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/**
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* @brief Sets a particular field value in input data.
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*
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* @param val [in] Value to set the field in.
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* @param mask [in] Mask for the field.
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* @param field [in] Field value.
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*
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* Uses the \a mask value to clear the bits that are part of the field and
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* sets the value mentioned in \a field in those bit positions.
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*
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* @return Returns \a val with updated field.
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*/
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static inline u32 set_field(u32 val, u32 mask, u32 field)
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{
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return ((val & ~mask) | field);
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}
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/**
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* @brief Gets a particular field value from input data.
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*
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* @param reg [in] Value to get the field from.
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* @param mask [in] Mask for the field.
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*
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* Returns the field value at mask position in reg.
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*
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* @return Field value from \a reg according to the \a mask.
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*/
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static inline u32 get_field(u32 reg, u32 mask)
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{
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return (reg & mask);
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}
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/*
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* MISRA Rule 11.6 compliant IP address generator.
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*/
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/**
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* Instruction pointer address generator. Used to get the virtual address
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* of the current instruction.
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*/
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#define NVGPU_GET_IP \
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({ __label__ label_here; label_here: &&label_here; })
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/**
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* @}
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*/
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#endif /* NVGPU_UTILS_H */
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