/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright © 2018 Intel Corporation
 */

#include "gt/intel_gt.h"
#include "gt/intel_gt_requests.h"

#include "i915_drv.h"
#include "i915_selftest.h"

#include "igt_flush_test.h"

int igt_flush_test(struct drm_i915_private *i915)
{
        struct intel_gt *gt;
        unsigned int i;
        int ret = 0;

        for_each_gt(gt, i915, i) {
                struct intel_engine_cs *engine;
                unsigned long timeout_ms = 0;
                unsigned int id;

                if (intel_gt_is_wedged(gt))
                        ret = -EIO;

                for_each_engine(engine, gt, id) {
                        if (engine->props.preempt_timeout_ms > timeout_ms)
                                timeout_ms = engine->props.preempt_timeout_ms;
                }

                cond_resched();

                /* 2x longest preempt timeout, experimentally determined */
                if (intel_gt_wait_for_idle(gt, HZ * timeout_ms / 500) == -ETIME) {
                        pr_err("%pS timed out, cancelling all further testing.\n",
                               __builtin_return_address(0));

                        GEM_TRACE("%pS timed out.\n",
                                  __builtin_return_address(0));
                        GEM_TRACE_DUMP();

                        intel_gt_set_wedged(gt);
                        ret = -EIO;
                }
        }

        return ret;
}