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https://github.com/tiagovignatti/intel-gpu-tools.git
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c03c6ceb29
With the header cleanup we can now give this header a suitable name, since it now really only contains register access and other I/O functions and assorted definitions. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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* Copyright © 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Ville Syrjälä <ville.syrjala@linux.intel.com>
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*
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/io.h>
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#include "intel_io.h"
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#include "intel_chipset.h"
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static void write_reg(uint32_t reg, uint8_t val, bool use_mmio)
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{
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if (use_mmio)
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*((volatile uint8_t *)mmio + reg) = val;
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else
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outb(val, reg);
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}
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static void usage(const char *cmdname)
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{
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printf("Usage: %s [-m] addr value\n", cmdname);
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printf("\t -m : use MMIO instead of port IO\n");
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printf("\t addr,value : in 0xXXXX format\n");
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}
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int main(int argc, char *argv[])
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{
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bool use_mmio = false;
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int ret = 0;
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uint32_t reg, val;
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int ch;
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const char *cmdname = argv[0];
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while ((ch = getopt(argc, argv, "m")) != -1) {
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switch(ch) {
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case 'm':
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use_mmio = true;
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break;
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default:
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc < 2) {
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usage(cmdname);
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return 1;
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}
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sscanf(argv[0], "0x%x", ®);
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sscanf(argv[1], "0x%x", &val);
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if (use_mmio)
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intel_register_access_init(intel_get_pci_device(), 0);
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else
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assert(iopl(3) == 0);
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write_reg(reg, val, use_mmio);
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if (use_mmio)
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intel_register_access_fini();
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else
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iopl(0);
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return ret;
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}
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