1 /* 2 * Copyright 2012-16 Advanced Micro Devices, Inc. 3 * Copyright 2019 Raptor Engineering, LLC 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 _OS_TYPES_H_ 28 #define _OS_TYPES_H_ 29 30 #include <linux/kgdb.h> 31 #include <linux/kref.h> 32 #include <linux/types.h> 33 #include <linux/slab.h> 34 35 #include <asm/byteorder.h> 36 37 #include <drm/drm_print.h> 38 39 #include "cgs_common.h" 40 41 #if defined(__BIG_ENDIAN) && !defined(BIGENDIAN_CPU) 42 #define BIGENDIAN_CPU 43 #elif defined(__LITTLE_ENDIAN) && !defined(LITTLEENDIAN_CPU) 44 #define LITTLEENDIAN_CPU 45 #endif 46 47 #undef FRAME_SIZE 48 49 #define dm_output_to_console(fmt, ...) DRM_DEBUG_KMS(fmt, ##__VA_ARGS__) 50 51 #define dm_error(fmt, ...) DRM_ERROR(fmt, ##__VA_ARGS__) 52 53 #if defined(CONFIG_DRM_AMD_DC_DCN) 54 #if defined(CONFIG_X86) 55 #include <asm/fpu/api.h> 56 #define DC_FP_START() kernel_fpu_begin() 57 #define DC_FP_END() kernel_fpu_end() 58 #elif defined(CONFIG_PPC64) 59 #include <asm/switch_to.h> 60 #include <asm/cputable.h> 61 #define DC_FP_START() { \ 62 if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \ 63 preempt_disable(); \ 64 enable_kernel_vsx(); \ 65 } else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \ 66 preempt_disable(); \ 67 enable_kernel_altivec(); \ 68 } else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \ 69 preempt_disable(); \ 70 enable_kernel_fp(); \ 71 } \ 72 } 73 #define DC_FP_END() { \ 74 if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \ 75 disable_kernel_vsx(); \ 76 preempt_enable(); \ 77 } else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \ 78 disable_kernel_altivec(); \ 79 preempt_enable(); \ 80 } else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \ 81 disable_kernel_fp(); \ 82 preempt_enable(); \ 83 } \ 84 } 85 #endif 86 #endif 87 88 /* 89 * 90 * general debug capabilities 91 * 92 */ 93 #ifdef CONFIG_DEBUG_KERNEL_DC 94 #define dc_breakpoint() kgdb_breakpoint() 95 #else 96 #define dc_breakpoint() do {} while (0) 97 #endif 98 99 #define ASSERT_CRITICAL(expr) do { \ 100 if (WARN_ON(!(expr))) \ 101 dc_breakpoint(); \ 102 } while (0) 103 104 #define ASSERT(expr) do { \ 105 if (WARN_ON_ONCE(!(expr))) \ 106 dc_breakpoint(); \ 107 } while (0) 108 109 #define BREAK_TO_DEBUGGER() \ 110 do { \ 111 DRM_DEBUG_DRIVER("%s():%d\n", __func__, __LINE__); \ 112 dc_breakpoint(); \ 113 } while (0) 114 115 #define DC_ERR(...) do { \ 116 dm_error(__VA_ARGS__); \ 117 BREAK_TO_DEBUGGER(); \ 118 } while (0) 119 120 #endif /* _OS_TYPES_H_ */ 121