0dc3c562aa
Although the ring management is much smaller compared to the other GT power management functions, continue the theme of extracting it out of the huge intel_pm.c for maintenance. Based on a patch by Chris Wilson. Signed-off-by: Andi Shyti <andi.shyti@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20191020184139.9145-1-chris@chris-wilson.co.uk
60 lines
1.1 KiB
C
60 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 © 2019 Intel Corporation
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*/
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#include "selftest_llc.h"
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static int live_gt_resume(void *arg)
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{
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struct intel_gt *gt = arg;
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IGT_TIMEOUT(end_time);
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int err;
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/* Do several suspend/resume cycles to check we don't explode! */
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do {
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intel_gt_suspend(gt);
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if (gt->rc6.enabled) {
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pr_err("rc6 still enabled after suspend!\n");
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intel_gt_set_wedged_on_init(gt);
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err = -EINVAL;
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break;
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}
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err = intel_gt_resume(gt);
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if (err)
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break;
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if (gt->rc6.supported && !gt->rc6.enabled) {
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pr_err("rc6 not enabled upon resume!\n");
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intel_gt_set_wedged_on_init(gt);
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err = -EINVAL;
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break;
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}
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err = st_llc_verify(>->llc);
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if (err) {
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pr_err("llc state not restored upon resume!\n");
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intel_gt_set_wedged_on_init(gt);
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break;
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}
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} while (!__igt_timeout(end_time, NULL));
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return err;
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}
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int intel_gt_pm_live_selftests(struct drm_i915_private *i915)
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{
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static const struct i915_subtest tests[] = {
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SUBTEST(live_gt_resume),
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};
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if (intel_gt_is_wedged(&i915->gt))
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return 0;
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return intel_gt_live_subtests(tests, &i915->gt);
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}
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