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/*
* 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"
#include "intel_chipset.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_register_access_init(intel_get_pci_device(), 0);
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);
intel_register_access_fini();
return 0;
}
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