/* $NetBSD: igt_reset.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $ */ /* * SPDX-License-Identifier: MIT * * Copyright © 2018 Intel Corporation */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: igt_reset.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $"); #include "igt_reset.h" #include "gt/intel_engine.h" #include "gt/intel_gt.h" #include "../i915_drv.h" void igt_global_reset_lock(struct intel_gt *gt) { struct intel_engine_cs *engine; enum intel_engine_id id; pr_debug("%s: current gpu_error=%08lx\n", __func__, gt->reset.flags); while (test_and_set_bit(I915_RESET_BACKOFF, >->reset.flags)) wait_event(gt->reset.queue, !test_bit(I915_RESET_BACKOFF, >->reset.flags)); for_each_engine(engine, gt, id) { while (test_and_set_bit(I915_RESET_ENGINE + id, >->reset.flags)) wait_on_bit(>->reset.flags, I915_RESET_ENGINE + id, TASK_UNINTERRUPTIBLE); } } void igt_global_reset_unlock(struct intel_gt *gt) { struct intel_engine_cs *engine; enum intel_engine_id id; for_each_engine(engine, gt, id) clear_bit(I915_RESET_ENGINE + id, >->reset.flags); clear_bit(I915_RESET_BACKOFF, >->reset.flags); wake_up_all(>->reset.queue); } bool igt_force_reset(struct intel_gt *gt) { intel_gt_set_wedged(gt); intel_gt_reset(gt, 0, NULL); return !intel_gt_is_wedged(gt); } |