1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright 2021 Advanced Micro Devices, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: AMD 24 * 25 */ 26 27 #ifndef __DC_FPU_H__ 28 #define __DC_FPU_H__ 29 30 void dc_assert_fp_enabled(void); 31 bool dc_is_fp_enabled(void); 32 void dc_fpu_begin(const char *function_name, const int line); 33 void dc_fpu_end(const char *function_name, const int line); 34 35 #ifndef _LINUX_FPU_COMPILATION_UNIT 36 #define DC_FP_START() dc_fpu_begin(__func__, __LINE__) 37 #define DC_FP_END() dc_fpu_end(__func__, __LINE__) 38 #ifdef CONFIG_DRM_AMD_DC_FP 39 #define DC_RUN_WITH_PREEMPTION_ENABLED(code) \ 40 do { \ 41 bool dc_fp_enabled = dc_is_fp_enabled(); \ 42 if (dc_fp_enabled) \ 43 DC_FP_END(); \ 44 code; \ 45 if (dc_fp_enabled) \ 46 DC_FP_START(); \ 47 } while (0) 48 #else 49 #define DC_RUN_WITH_PREEMPTION_ENABLED(code) code 50 #endif // !CONFIG_DRM_AMD_DC_FP 51 #else 52 #define DC_FP_START() BUILD_BUG() 53 #define DC_FP_END() BUILD_BUG() 54 #define DC_RUN_WITH_PREEMPTION_ENABLED(code) code 55 #endif // !_LINUX_FPU_COMPILATION_UNIT 56 57 #endif /* __DC_FPU_H__ */ 58