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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
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/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2018 Intel Corporation
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*/
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#include "igt_reset.h"
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#include "../i915_drv.h"
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#include "../intel_ringbuffer.h"
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void igt_global_reset_lock(struct drm_i915_private *i915)
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{
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struct intel_engine_cs *engine;
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enum intel_engine_id id;
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pr_debug("%s: current gpu_error=%08lx\n",
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__func__, i915->gpu_error.flags);
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while (test_and_set_bit(I915_RESET_BACKOFF, &i915->gpu_error.flags))
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wait_event(i915->gpu_error.reset_queue,
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!test_bit(I915_RESET_BACKOFF,
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&i915->gpu_error.flags));
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for_each_engine(engine, i915, id) {
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while (test_and_set_bit(I915_RESET_ENGINE + id,
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&i915->gpu_error.flags))
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wait_on_bit(&i915->gpu_error.flags,
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I915_RESET_ENGINE + id,
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TASK_UNINTERRUPTIBLE);
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}
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}
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void igt_global_reset_unlock(struct drm_i915_private *i915)
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{
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struct intel_engine_cs *engine;
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enum intel_engine_id id;
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for_each_engine(engine, i915, id)
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clear_bit(I915_RESET_ENGINE + id, &i915->gpu_error.flags);
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clear_bit(I915_RESET_BACKOFF, &i915->gpu_error.flags);
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wake_up_all(&i915->gpu_error.reset_queue);
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}
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