mirror of
https://github.com/tiagovignatti/intel-gpu-tools.git
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70 lines
2.0 KiB
C
70 lines
2.0 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 DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "debugfs.h"
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char debugfs_path[128];
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char debugfs_dri_path[128];
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int debugfs_init(void)
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{
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const char *path = "/sys/kernel/debug";
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struct stat st;
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int n;
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if (stat("/debug/dri", &st) == 0) {
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path = "/debug/dri";
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goto find_minor;
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}
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if (stat("/sys/kernel/debug/dri", &st) == 0)
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goto find_minor;
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if (stat("/sys/kernel/debug", &st))
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return errno;
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if (mount("debug", "/sys/kernel/debug", "debugfs", 0, 0))
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return errno;
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find_minor:
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strcpy(debugfs_path, path);
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for (n = 0; n < 16; n++) {
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int len = sprintf(debugfs_dri_path, "%s/dri/%d", path, n);
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sprintf(debugfs_dri_path + len, "/i915_error_state");
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if (stat(debugfs_dri_path, &st) == 0) {
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debugfs_dri_path[len] = '\0';
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return 0;
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}
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}
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debugfs_dri_path[0] = '\0';
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return ENOENT;
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}
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