drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.h

/* SPDX-License-Identifier: MIT */
/*
 * Copyright 2021 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#ifndef __DC_FPU_H__
#define __DC_FPU_H__

void dc_assert_fp_enabled(void);
bool dc_is_fp_enabled(void);
void dc_fpu_begin(const char *function_name, const int line);
void dc_fpu_end(const char *function_name, const int line);

#ifndef _LINUX_FPU_COMPILATION_UNIT
#define DC_FP_START()	dc_fpu_begin(__func__, __LINE__)
#define DC_FP_END()	dc_fpu_end(__func__, __LINE__)
#ifdef CONFIG_DRM_AMD_DC_FP
#define DC_RUN_WITH_PREEMPTION_ENABLED(code) \
	do { \
		bool dc_fp_enabled = dc_is_fp_enabled(); \
		if (dc_fp_enabled) \
			DC_FP_END(); \
		code; \
		if (dc_fp_enabled) \
			DC_FP_START(); \
	} while (0)
#else
#define DC_RUN_WITH_PREEMPTION_ENABLED(code) code
#endif // !CONFIG_DRM_AMD_DC_FP
#else
#define DC_FP_START()	BUILD_BUG()
#define DC_FP_END()	BUILD_BUG()
#define DC_RUN_WITH_PREEMPTION_ENABLED(code) \
	do { \
		BUILD_BUG(); \
		code; \
	} while (0)
#endif // !_LINUX_FPU_COMPILATION_UNIT

#endif /* __DC_FPU_H__ */