From c25532cc613c9daf87e97d04aec2ad708bec9b3b Mon Sep 17 00:00:00 2001 From: Ben Gamari Date: Wed, 10 Jun 2009 23:13:40 -0400 Subject: [PATCH] Add register writing tool Signed-off-by: Eric Anholt --- tools/Makefile.am | 3 ++- tools/intel_reg_write.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+), 1 deletion(-) create mode 100644 tools/intel_reg_write.c diff --git a/tools/Makefile.am b/tools/Makefile.am index abbb11f..31520b7 100644 --- a/tools/Makefile.am +++ b/tools/Makefile.am @@ -1,7 +1,8 @@ bin_PROGRAMS = \ intel_gpu_dump \ intel_gpu_top \ - intel_stepping + intel_stepping \ + intel_reg_write intel_gpu_dump_SOURCES = \ intel_gpu_dump.c \ diff --git a/tools/intel_reg_write.c b/tools/intel_reg_write.c new file mode 100644 index 0000000..7bed062 --- /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 + * + */ + +#include +#include +#include +#include +#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", ®); + 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; +} + -- 2.7.4