1 files changed, 89 insertions, 0 deletions
diff --git a/src/broadcom/common/v3d_debug.c b/src/broadcom/common/v3d_debug.c
new file mode 100644
index 00000000000..630bfe0fc25
--- /dev/null
+++ b/src/broadcom/common/v3d_debug.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2003 VMware, Inc.
+ * Copyright © 2006 Intel Corporation
+ * Copyright © 2017 Broadcom
+ *
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+/**
+ * \file v3d_debug.c
+ *
+ * Support for the V3D_DEBUG environment variable, along with other
+ * miscellaneous debugging code.
+ */
+
+#include <stdlib.h>
+
+#include "common/v3d_debug.h"
+#include "util/macros.h"
+#include "util/debug.h"
+#include "c11/threads.h"
+
+uint32_t V3D_DEBUG = 0;
+
+static const struct debug_control debug_control[] = {
+        { "cl",          V3D_DEBUG_CL},
+        { "qpu",         V3D_DEBUG_QPU},
+        { "vir",         V3D_DEBUG_VIR},
+        { "nir",         V3D_DEBUG_NIR},
+        { "tgsi",        V3D_DEBUG_TGSI},
+        { "shaderdb",    V3D_DEBUG_SHADERDB},
+        { "surface",     V3D_DEBUG_SURFACE},
+        { "perf",        V3D_DEBUG_PERF},
+        { "norast",      V3D_DEBUG_NORAST},
+        { "fs",          V3D_DEBUG_FS},
+        { "vs",          V3D_DEBUG_VS},
+        { "cs",          V3D_DEBUG_CS},
+        { NULL,    0 }
+};
+
+uint32_t
+v3d_debug_flag_for_shader_stage(gl_shader_stage stage)
+{
+        uint32_t flags[] = {
+                [MESA_SHADER_VERTEX] = V3D_DEBUG_VS,
+                [MESA_SHADER_TESS_CTRL] = 0,
+                [MESA_SHADER_TESS_EVAL] = 0,
+                [MESA_SHADER_GEOMETRY] = 0,
+                [MESA_SHADER_FRAGMENT] = V3D_DEBUG_FS,
+                [MESA_SHADER_COMPUTE] = V3D_DEBUG_CS,
+        };
+        STATIC_ASSERT(MESA_SHADER_STAGES == 6);
+        return flags[stage];
+}
+
+static void
+v3d_process_debug_variable_once(void)
+{
+        V3D_DEBUG = parse_debug_string(getenv("V3D_DEBUG"), debug_control);
+
+        if (V3D_DEBUG & V3D_DEBUG_SHADERDB)
+                V3D_DEBUG |= V3D_DEBUG_NORAST;
+}
+
+void
+v3d_process_debug_variable(void)
+{
+        static once_flag v3d_process_debug_variable_flag = ONCE_FLAG_INIT;
+
+        call_once(&v3d_process_debug_variable_flag,
+                  v3d_process_debug_variable_once);
+}