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authorBen Gamari <bgamari.foss@gmail.com>2009-06-10 23:13:40 -0400
committerEric Anholt <eric@anholt.net>2009-06-23 16:36:32 -0700
commitc25532cc613c9daf87e97d04aec2ad708bec9b3b (patch)
treea4e9d0e1fd17eeba7f0b350ebd840513885b152b /tools/intel_reg_write.c
parentbbafc3d0bf851f0f1a2de6cdc7f2923a2387e775 (diff)
Add register writing tool
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'tools/intel_reg_write.c')
-rw-r--r--tools/intel_reg_write.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/tools/intel_reg_write.c b/tools/intel_reg_write.c
new file mode 100644
index 00000000..7bed0623
--- /dev/null
+++ b/tools/intel_reg_write.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2007 Intel Corporation
+ *
+ * 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.
+ *
+ * Authors:
+ * Ben Gamari <bgamari.foss@gmail.com>
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <err.h>
+#include "intel_gpu_tools.h"
+
+int main(int argc, char** argv)
+{
+ uint32_t reg, value;
+ volatile uint32_t *ptr;
+
+ if (argc < 3) {
+ printf("Usage: %s addr value\n", argv[0]);
+ printf(" WARNING: This is dangerous to you and your system's health.\n");
+ printf(" Only for use in debugging.\n");
+ exit(1);
+ }
+
+ intel_get_mmio();
+ sscanf(argv[1], "0x%x", &reg);
+ sscanf(argv[2], "0x%x", &value);
+ ptr = (volatile uint32_t *)((volatile char *)mmio + reg);
+
+ printf("Value before: 0x%X\n", *ptr);
+ *ptr = value;
+ printf("Value after: 0x%X\n", *ptr);
+
+ return 0;
+}
+