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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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28d6ccce73
Two simple selftests which test that both GT and engine workarounds are not lost after either a full GPU reset, or after the per-engine ones. (Including checks that one engine reset is not affecting workarounds not belonging to itself.) v2: * Rebase for series refactoring. * Add spinner for actual engine reset! * Add idle reset test as well. (Chris Wilson) * Share existing global_reset_lock. (Chris Wilson) v3: * intel_engine_verify_workarounds can be static. * API rename. (Chris Wilson) * Move global reset lock out of the loop. (Chris Wilson) v4: * Add missing rpm puts. (Chris Wilson) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20181203125014.3219-5-tvrtko.ursulin@linux.intel.com
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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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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