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      1 /*	$NetBSD: os_types.h,v 1.4 2022/07/24 20:05:08 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012-16 Advanced Micro Devices, Inc.
      5  * Copyright 2019 Raptor Engineering, LLC
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included in
     15  * all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     23  * OTHER DEALINGS IN THE SOFTWARE.
     24  *
     25  * Authors: AMD
     26  *
     27  */
     28 
     29 #ifndef _OS_TYPES_H_
     30 #define _OS_TYPES_H_
     31 
     32 #include <linux/kgdb.h>
     33 #include <linux/kref.h>
     34 #include <linux/types.h>
     35 #include <linux/slab.h>
     36 
     37 #include <asm/byteorder.h>
     38 
     39 #include <drm/drm_print.h>
     40 
     41 #include "cgs_common.h"
     42 
     43 #if defined(__BIG_ENDIAN) && !defined(BIGENDIAN_CPU)
     44 #define BIGENDIAN_CPU
     45 #elif defined(__LITTLE_ENDIAN) && !defined(LITTLEENDIAN_CPU)
     46 #define LITTLEENDIAN_CPU
     47 #endif
     48 
     49 #undef FRAME_SIZE
     50 
     51 #define dm_output_to_console(fmt, ...) DRM_DEBUG_KMS(fmt, ##__VA_ARGS__)
     52 
     53 #define dm_error(fmt, ...) DRM_ERROR(fmt, ##__VA_ARGS__)
     54 
     55 #if defined(CONFIG_DRM_AMD_DC_DCN)
     56 #ifdef __NetBSD__
     57 #if defined(__i386__) || defined(__x86_64__)
     58 #include <x86/fpu.h>
     59 #define	DC_FP_START()	fpu_kern_enter()
     60 #define	DC_FP_END()	fpu_kern_leave()
     61 #elif defined(__arm__) || defined(__aarch64__)
     62 #include <arm/fpu.h>
     63 #define	DC_FP_START()	fpu_kern_enter()
     64 #define	DC_FP_END()	fpu_kern_leave()
     65 #endif
     66 #else	/* !__NetBSD__ */
     67 #if defined(CONFIG_X86)
     68 #include <asm/fpu/api.h>
     69 #define DC_FP_START() kernel_fpu_begin()
     70 #define DC_FP_END() kernel_fpu_end()
     71 #elif defined(CONFIG_PPC64)
     72 #include <asm/switch_to.h>
     73 #include <asm/cputable.h>
     74 #define DC_FP_START() { \
     75 	if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \
     76 		preempt_disable(); \
     77 		enable_kernel_vsx(); \
     78 	} else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \
     79 		preempt_disable(); \
     80 		enable_kernel_altivec(); \
     81 	} else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \
     82 		preempt_disable(); \
     83 		enable_kernel_fp(); \
     84 	} \
     85 }
     86 #define DC_FP_END() { \
     87 	if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \
     88 		disable_kernel_vsx(); \
     89 		preempt_enable(); \
     90 	} else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \
     91 		disable_kernel_altivec(); \
     92 		preempt_enable(); \
     93 	} else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \
     94 		disable_kernel_fp(); \
     95 		preempt_enable(); \
     96 	} \
     97 }
     98 #endif
     99 #endif
    100 #endif
    101 
    102 /*
    103  *
    104  * general debug capabilities
    105  *
    106  */
    107 #if defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB)
    108 #define ASSERT_CRITICAL(expr) do {	\
    109 	if (WARN_ON(!(expr))) { \
    110 		kgdb_breakpoint(); \
    111 	} \
    112 } while (0)
    113 #else
    114 #define ASSERT_CRITICAL(expr) do {	\
    115 	if (WARN_ON(!(expr))) { \
    116 		; \
    117 	} \
    118 } while (0)
    119 #endif
    120 
    121 #if defined(CONFIG_DEBUG_KERNEL_DC)
    122 #define ASSERT(expr) ASSERT_CRITICAL(expr)
    123 
    124 #else
    125 #define ASSERT(expr) WARN_ON(!(expr))
    126 #endif
    127 
    128 #define BREAK_TO_DEBUGGER() ASSERT(0)
    129 
    130 #define DC_ERR(...)  do { \
    131 	dm_error(__VA_ARGS__); \
    132 	BREAK_TO_DEBUGGER(); \
    133 } while (0)
    134 
    135 #endif /* _OS_TYPES_H_ */
    136