src/broadcom/common/v3d_debug.c

   1 /*
   2  * Copyright 2003 VMware, Inc.
   3  * Copyright © 2006 Intel Corporation
   4  * Copyright © 2017 Broadcom
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23  * IN THE SOFTWARE.
  24  */
  25
  26 /**
  27  * \file v3d_debug.c
  28  *
  29  * Support for the V3D_DEBUG environment variable, along with other
  30  * miscellaneous debugging code.
  31  */
  32
  33 #include <stdlib.h>
  34
  35 #include "common/v3d_debug.h"
  36 #include "util/macros.h"
  37 #include "util/debug.h"
  38 #include "c11/threads.h"
  39
  40 uint32_t V3D_DEBUG = 0;
  41
  42 static const struct debug_control debug_control[] = {
  43         { "cl",          V3D_DEBUG_CL},
  44         { "clif",        V3D_DEBUG_CLIF},
  45         { "qpu",         V3D_DEBUG_QPU},
  46         { "vir",         V3D_DEBUG_VIR},
  47         { "nir",         V3D_DEBUG_NIR},
  48         { "tgsi",        V3D_DEBUG_TGSI},
  49         { "shaderdb",    V3D_DEBUG_SHADERDB},
  50         { "surface",     V3D_DEBUG_SURFACE},
  51         { "perf",        V3D_DEBUG_PERF},
  52         { "norast",      V3D_DEBUG_NORAST},
  53         { "fs",          V3D_DEBUG_FS},
  54         { "vs",          V3D_DEBUG_VS},
  55         { "cs",          V3D_DEBUG_CS},
  56         { "always_flush", V3D_DEBUG_ALWAYS_FLUSH},
  57         { "precompile",  V3D_DEBUG_PRECOMPILE},
  58         { NULL,    0 }
  59 };
  60
  61 uint32_t
  62 v3d_debug_flag_for_shader_stage(gl_shader_stage stage)
  63 {
  64         uint32_t flags[] = {
  65                 [MESA_SHADER_VERTEX] = V3D_DEBUG_VS,
  66                 [MESA_SHADER_TESS_CTRL] = 0,
  67                 [MESA_SHADER_TESS_EVAL] = 0,
  68                 [MESA_SHADER_GEOMETRY] = 0,
  69                 [MESA_SHADER_FRAGMENT] = V3D_DEBUG_FS,
  70                 [MESA_SHADER_COMPUTE] = V3D_DEBUG_CS,
  71         };
  72         STATIC_ASSERT(MESA_SHADER_STAGES == 6);
  73         return flags[stage];
  74 }
  75
  76 static void
  77 v3d_process_debug_variable_once(void)
  78 {
  79         V3D_DEBUG = parse_debug_string(getenv("V3D_DEBUG"), debug_control);
  80
  81         if (V3D_DEBUG & V3D_DEBUG_SHADERDB)
  82                 V3D_DEBUG |= V3D_DEBUG_NORAST;
  83 }
  84
  85 void
  86 v3d_process_debug_variable(void)
  87 {
  88         static once_flag v3d_process_debug_variable_flag = ONCE_FLAG_INIT;
  89
  90         call_once(&v3d_process_debug_variable_flag,
  91                   v3d_process_debug_variable_once);
  92 }