LXR linux/drivers/gpu/drm/amd/display/dc/os

   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#if defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB)
  94#define ASSERT_CRITICAL(expr) do {      \
  95        if (WARN_ON(!(expr))) { \
  96                kgdb_breakpoint(); \
  97        } \
  98} while (0)
  99#else
 100#define ASSERT_CRITICAL(expr) do {      \
 101        if (WARN_ON(!(expr))) { \
 102                ; \
 103        } \
 104} while (0)
 105#endif
 106
 107#if defined(CONFIG_DEBUG_KERNEL_DC)
 108#define ASSERT(expr) ASSERT_CRITICAL(expr)
 109
 110#else
 111#define ASSERT(expr) WARN_ON_ONCE(!(expr))
 112#endif
 113
 114#define BREAK_TO_DEBUGGER() ASSERT(0)
 115
 116#define DC_ERR(...)  do { \
 117        dm_error(__VA_ARGS__); \
 118        BREAK_TO_DEBUGGER(); \
 119} while (0)
 120
 121#endif /* _OS_TYPES_H_ */
 122