radeon: Add common debugging functions.

These function are aiming to make it very simple to add and keep large amount
of debugging code without having runtime impact in relase builds. Basic idea
is to expose simple printf style debugging functions that are inlined.

Level parameter will be evalueted in compile time so compiler can optimise
some of debugging functions out if compile time request for debug level is too
tight.

2 files changed, 207 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_debug.c b/src/mesa/drivers/dri/radeon/radeon_debug.c
new file mode 100644
index 0000000000..b5e7b668ce
--- /dev/null
+++ b/src/mesa/drivers/dri/radeon/radeon_debug.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright © 2009 Pauli Nieminen
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ */
+/*
+ * Authors:
+ *      Pauli Nieminen <suokkos@gmail.com>
+ */
+
+#include "utils.h"
+
+#include "radeon_debug.h"
+
+static const struct dri_debug_control debug_control[] = {
+	{"fall", RADEON_FALLBACKS},
+	{"tex", RADEON_TEXTURE},
+	{"ioctl", RADEON_IOCTL},
+	{"render", RADEON_RENDER},
+	{"swrender", RADEON_SWRENDER},
+	{"state", RADEON_STATE},
+	{"shader", RADEON_SHADER},
+	{"vfmt", RADEON_VFMT},
+	{"vtxf", RADEON_VFMT},
+	{"dri", RADEON_DRI},
+	{"dma", RADEON_DMA},
+	{"sanity", RADEON_SANITY},
+	{"sync", RADEON_SYNC},
+	{"pixel", RADEON_PIXEL},
+	{"mem", RADEON_MEMORY},
+	{"cs", RADEON_CS},
+	{"allmsg", ~RADEON_SYNC}, /* avoid the term "sync" because the parser uses strstr */
+	{NULL, 0}
+};
+
+radeon_debug_type_t radeon_enabled_debug_types;
+
+void radeon_init_debug(void)
+{
+	radeon_enabled_debug_types = driParseDebugString(getenv("RADEON_DEBUG"), debug_control);
+
+	radeon_enabled_debug_types |= RADEON_GENERAL;
+}
diff --git a/src/mesa/drivers/dri/radeon/radeon_debug.h b/src/mesa/drivers/dri/radeon/radeon_debug.h
new file mode 100644
index 0000000000..63827103d5
--- /dev/null
+++ b/src/mesa/drivers/dri/radeon/radeon_debug.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright © 2009 Pauli Nieminen
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ */
+/*
+ * Authors:
+ *      Pauli Nieminen <suokkos@gmail.com>
+ */
+
+#ifndef RADEON_DEBUG_H_INCLUDED
+#define RADEON_DEBUG_H_INCLUDED
+
+#include <stdarg.h>
+#include <stdio.h>
+
+typedef enum radeon_debug_levels {
+	RADEON_CRITICAL  = 0, /* Only errors */
+	RADEON_IMPORTANT = 1, /* Important warnings and messages */
+	RADEON_NORMAL    = 2, /* Normal log messages usefull for debugging */
+	RADEON_VERBOSE   = 3, /* Extra details to debugging */
+	RADEON_TRACE     = 4  /* Log about everything that happens */
+} radeon_debug_level_t;
+
+/**
+ * Compile time option to change level of debugging compiled to dri driver.
+ */
+#ifndef RADEON_DEBUG_LEVEL
+#define RADEON_DEBUG_LEVEL RADEON_NORMAL
+#endif
+
+typedef enum radeon_debug_types {
+	RADEON_TEXTURE   = 0x0001,
+	RADEON_STATE     = 0x0002,
+	RADEON_IOCTL     = 0x0004,
+	RADEON_RENDER    = 0x0008,
+	RADEON_SWRENDER  = 0x0010,
+	RADEON_FALLBACKS = 0x0020,
+	RADEON_VFMT      = 0x0040,
+	RADEON_SHADER    = 0x0080,
+	RADEON_CS        = 0x0100,
+	RADEON_DRI       = 0x0200,
+	RADEON_DMA       = 0x0400,
+	RADEON_SANITY    = 0x0800,
+	RADEON_SYNC      = 0x1000,
+	RADEON_PIXEL     = 0x2000,
+	RADEON_MEMORY    = 0x4000,
+	RADEON_GENERAL   = 0x8000   /* Used for errors and warnings */
+} radeon_debug_type_t;
+
+extern radeon_debug_type_t radeon_enabled_debug_types;
+
+/**
+ * Compabibility layer for old debug code
+ **/
+#define RADEON_DEBUG radeon_enabled_debug_types
+
+static inline int radeon_is_debug_enabled(const radeon_debug_type_t type,
+	   const radeon_debug_level_t level)
+{
+       return RADEON_DEBUG_LEVEL <= level
+		&& (type & radeon_enabled_debug_types);
+}
+
+/**
+ * Print out debug message if channel specified by type is enabled
+ * and compile time debugging level is at least as high as level parameter
+ */
+static inline void radeon_print(const radeon_debug_type_t type,
+	   const radeon_debug_level_t level,
+	   const char* message,
+	   ...)
+{
+	/* Compile out if level of message is too high */
+	if (radeon_is_debug_enabled(type, level)) {
+
+		va_list values;
+		va_start( values, message );
+		vfprintf(stderr, message, values);
+		va_end( values );
+	}
+}
+
+/**
+ * printf style function for writing error messages.
+ */
+static inline void radeon_error(const char* message, ...)
+{
+       va_list values;
+       va_start( values, message );
+       radeon_print(RADEON_GENERAL, RADEON_CRITICAL, message, values);
+       va_end( values );
+}
+
+/**
+ * printf style function for writing warnings.
+ */
+static inline void radeon_warning(const char* message, ...)
+{
+       va_list values;
+       va_start( values, message );
+       radeon_print(RADEON_GENERAL, RADEON_IMPORTANT, message, values);
+       va_end( values );
+}
+
+
+extern void radeon_init_debug(void);
+
+/* From http://gcc. gnu.org/onlinedocs/gcc-3.2.3/gcc/Variadic-Macros.html .
+   I suppose we could inline this and use macro to fetch out __LINE__ and stuff in case we run into trouble
+   with other compilers ... GLUE!
+*/
+#define WARN_ONCE(a, ...)      { \
+       static int warn##__LINE__=1; \
+       if(warn##__LINE__){ \
+               radeon_warning("*********************************WARN_ONCE*********************************\n"); \
+               radeon_warning("File %s function %s line %d\n", \
+                       __FILE__, __FUNCTION__, __LINE__); \
+               radeon_warning(  (a), ## __VA_ARGS__);\
+               radeon_warning("***************************************************************************\n"); \
+               warn##__LINE__=0;\
+               } \
+       }
+
+
+#endif