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