From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B265C432BE for ; Thu, 22 Jul 2021 23:37:45 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4B75860E9B for ; Thu, 22 Jul 2021 23:37:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4B75860E9B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5CBF36F5CF; Thu, 22 Jul 2021 23:36:52 +0000 (UTC) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id B499E6F5BB; Thu, 22 Jul 2021 23:36:41 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10053"; a="199037591" X-IronPort-AV: E=Sophos;i="5.84,262,1620716400"; d="scan'208";a="199037591" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jul 2021 16:36:40 -0700 X-IronPort-AV: E=Sophos;i="5.84,262,1620716400"; d="scan'208";a="470860959" Received: from dhiatt-server.jf.intel.com ([10.54.81.3]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jul 2021 16:36:40 -0700 From: Matthew Brost To: , Subject: [PATCH 27/33] drm/i915/selftest: Fix workarounds selftest for GuC submission Date: Thu, 22 Jul 2021 16:54:20 -0700 Message-Id: <20210722235426.31831-28-matthew.brost@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210722235426.31831-1-matthew.brost@intel.com> References: <20210722235426.31831-1-matthew.brost@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: "Signed-off-by: Rahul Kumar Singh" When GuC submission is enabled, the GuC controls engine resets. Rather than explicitly triggering a reset, the driver must submit a hanging context to GuC and wait for the reset to occur. Signed-off-by: Rahul Kumar Singh Signed-off-by: John Harrison Signed-off-by: Matthew Brost Cc: Daniele Ceraolo Spurio Cc: Matthew Brost Reviewed-by: Matthew Brost --- drivers/gpu/drm/i915/Makefile | 1 + .../gpu/drm/i915/gt/selftest_workarounds.c | 132 +++++++++++++----- .../i915/selftests/intel_scheduler_helpers.c | 75 ++++++++++ .../i915/selftests/intel_scheduler_helpers.h | 27 ++++ 4 files changed, 200 insertions(+), 35 deletions(-) create mode 100644 drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c create mode 100644 drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 10b3bb6207ba..ab7679957623 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -280,6 +280,7 @@ i915-$(CONFIG_DRM_I915_CAPTURE_ERROR) += i915_gpu_error.o i915-$(CONFIG_DRM_I915_SELFTEST) += \ gem/selftests/i915_gem_client_blt.o \ gem/selftests/igt_gem_utils.o \ + selftests/intel_scheduler_helpers.o \ selftests/i915_random.o \ selftests/i915_selftest.o \ selftests/igt_atomic.o \ diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c index 7a38ce40feb2..27bde7c28888 100644 --- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c +++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c @@ -12,6 +12,7 @@ #include "selftests/igt_flush_test.h" #include "selftests/igt_reset.h" #include "selftests/igt_spinner.h" +#include "selftests/intel_scheduler_helpers.h" #include "selftests/mock_drm.h" #include "gem/selftests/igt_gem_utils.h" @@ -261,28 +262,34 @@ static int do_engine_reset(struct intel_engine_cs *engine) return intel_engine_reset(engine, "live_workarounds"); } +static int do_guc_reset(struct intel_engine_cs *engine) +{ + /* Currently a no-op as the reset is handled by GuC */ + return 0; +} + static int switch_to_scratch_context(struct intel_engine_cs *engine, - struct igt_spinner *spin) + struct igt_spinner *spin, + struct i915_request **rq) { struct intel_context *ce; - struct i915_request *rq; int err = 0; ce = intel_context_create(engine); if (IS_ERR(ce)) return PTR_ERR(ce); - rq = igt_spinner_create_request(spin, ce, MI_NOOP); + *rq = igt_spinner_create_request(spin, ce, MI_NOOP); intel_context_put(ce); - if (IS_ERR(rq)) { + if (IS_ERR(*rq)) { spin = NULL; - err = PTR_ERR(rq); + err = PTR_ERR(*rq); goto err; } - err = request_add_spin(rq, spin); + err = request_add_spin(*rq, spin); err: if (err && spin) igt_spinner_end(spin); @@ -296,6 +303,7 @@ static int check_whitelist_across_reset(struct intel_engine_cs *engine, { struct intel_context *ce, *tmp; struct igt_spinner spin; + struct i915_request *rq; intel_wakeref_t wakeref; int err; @@ -316,13 +324,24 @@ static int check_whitelist_across_reset(struct intel_engine_cs *engine, goto out_spin; } - err = switch_to_scratch_context(engine, &spin); + err = switch_to_scratch_context(engine, &spin, &rq); if (err) goto out_spin; + /* Ensure the spinner hasn't aborted */ + if (i915_request_completed(rq)) { + pr_err("%s spinner failed to start\n", name); + err = -ETIMEDOUT; + goto out_spin; + } + with_intel_runtime_pm(engine->uncore->rpm, wakeref) err = reset(engine); + /* Ensure the reset happens and kills the engine */ + if (err == 0) + err = intel_selftest_wait_for_rq(rq); + igt_spinner_end(&spin); if (err) { @@ -787,9 +806,26 @@ static int live_reset_whitelist(void *arg) continue; if (intel_has_reset_engine(gt)) { - err = check_whitelist_across_reset(engine, - do_engine_reset, - "engine"); + if (intel_engine_uses_guc(engine)) { + struct intel_selftest_saved_policy saved; + int err2; + + err = intel_selftest_modify_policy(engine, &saved); + if (err) + goto out; + + err = check_whitelist_across_reset(engine, + do_guc_reset, + "guc"); + + err2 = intel_selftest_restore_policy(engine, &saved); + if (err == 0) + err = err2; + } else + err = check_whitelist_across_reset(engine, + do_engine_reset, + "engine"); + if (err) goto out; } @@ -1235,31 +1271,40 @@ live_engine_reset_workarounds(void *arg) reference_lists_init(gt, lists); for_each_engine(engine, gt, id) { + struct intel_selftest_saved_policy saved; + bool using_guc = intel_engine_uses_guc(engine); bool ok; + int ret2; pr_info("Verifying after %s reset...\n", engine->name); + ret = intel_selftest_modify_policy(engine, &saved); + if (ret) + break; + + ce = intel_context_create(engine); if (IS_ERR(ce)) { ret = PTR_ERR(ce); - break; - } - - ok = verify_wa_lists(gt, lists, "before reset"); - if (!ok) { - ret = -ESRCH; - goto err; + goto restore; } - ret = intel_engine_reset(engine, "live_workarounds:idle"); - if (ret) { - pr_err("%s: Reset failed while idle\n", engine->name); - goto err; - } + if (!using_guc) { + ok = verify_wa_lists(gt, lists, "before reset"); + if (!ok) { + ret = -ESRCH; + goto err; + } - ok = verify_wa_lists(gt, lists, "after idle reset"); - if (!ok) { - ret = -ESRCH; - goto err; + ret = intel_engine_reset(engine, "live_workarounds:idle"); + if (ret) { + pr_err("%s: Reset failed while idle\n", engine->name); + goto err; + } + ok = verify_wa_lists(gt, lists, "after idle reset"); + if (!ok) { + ret = -ESRCH; + goto err; + } } ret = igt_spinner_init(&spin, engine->gt); @@ -1280,25 +1325,42 @@ live_engine_reset_workarounds(void *arg) goto err; } - ret = intel_engine_reset(engine, "live_workarounds:active"); - if (ret) { - pr_err("%s: Reset failed on an active spinner\n", - engine->name); - igt_spinner_fini(&spin); - goto err; + /* Ensure the spinner hasn't aborted */ + if (i915_request_completed(rq)) { + ret = -ETIMEDOUT; + goto skip; + } + + if (!using_guc) { + ret = intel_engine_reset(engine, "live_workarounds:active"); + if (ret) { + pr_err("%s: Reset failed on an active spinner\n", + engine->name); + igt_spinner_fini(&spin); + goto err; + } } + /* Ensure the reset happens and kills the engine */ + if (ret == 0) + ret = intel_selftest_wait_for_rq(rq); + +skip: igt_spinner_end(&spin); igt_spinner_fini(&spin); ok = verify_wa_lists(gt, lists, "after busy reset"); - if (!ok) { + if (!ok) ret = -ESRCH; - goto err; - } err: intel_context_put(ce); + +restore: + ret2 = intel_selftest_restore_policy(engine, &saved); + if (ret == 0) + ret = ret2; + if (ret) break; } diff --git a/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c new file mode 100644 index 000000000000..5cdee1378e98 --- /dev/null +++ b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2021 Intel Corporation + */ + +//#include "gt/intel_engine_user.h" +#include "gt/intel_gt.h" +#include "i915_drv.h" +#include "i915_selftest.h" + +#include "selftests/intel_scheduler_helpers.h" + +#define REDUCED_TIMESLICE 5 +#define REDUCED_PREEMPT 10 +#define WAIT_FOR_RESET_TIME 1000 + +int intel_selftest_modify_policy(struct intel_engine_cs *engine, + struct intel_selftest_saved_policy *saved) + +{ + int err; + + saved->reset = engine->i915->params.reset; + saved->flags = engine->flags; + saved->timeslice = engine->props.timeslice_duration_ms; + saved->preempt_timeout = engine->props.preempt_timeout_ms; + + /* + * Enable force pre-emption on time slice expiration + * together with engine reset on pre-emption timeout. + * This is required to make the GuC notice and reset + * the single hanging context. + * Also, reduce the preemption timeout to something + * small to speed the test up. + */ + engine->i915->params.reset = 2; + engine->flags |= I915_ENGINE_WANT_FORCED_PREEMPTION; + engine->props.timeslice_duration_ms = REDUCED_TIMESLICE; + engine->props.preempt_timeout_ms = REDUCED_PREEMPT; + + if (!intel_engine_uses_guc(engine)) + return 0; + + err = intel_guc_global_policies_update(&engine->gt->uc.guc); + if (err) + intel_selftest_restore_policy(engine, saved); + + return err; +} + +int intel_selftest_restore_policy(struct intel_engine_cs *engine, + struct intel_selftest_saved_policy *saved) +{ + /* Restore the original policies */ + engine->i915->params.reset = saved->reset; + engine->flags = saved->flags; + engine->props.timeslice_duration_ms = saved->timeslice; + engine->props.preempt_timeout_ms = saved->preempt_timeout; + + if (!intel_engine_uses_guc(engine)) + return 0; + + return intel_guc_global_policies_update(&engine->gt->uc.guc); +} + +int intel_selftest_wait_for_rq(struct i915_request *rq) +{ + long ret; + + ret = i915_request_wait(rq, 0, WAIT_FOR_RESET_TIME); + if (ret < 0) + return ret; + + return 0; +} diff --git a/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h new file mode 100644 index 000000000000..79605b14bc33 --- /dev/null +++ b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2021 Intel Corporation + */ + +#ifndef _INTEL_SELFTEST_SCHEDULER_HELPERS_H_ +#define _INTEL_SELFTEST_SCHEDULER_HELPERS_H_ + +#include + +struct i915_request; +struct intel_engine_cs; + +struct intel_selftest_saved_policy { + u32 flags; + u32 reset; + u64 timeslice; + u64 preempt_timeout; +}; + +int intel_selftest_modify_policy(struct intel_engine_cs *engine, + struct intel_selftest_saved_policy *saved); +int intel_selftest_restore_policy(struct intel_engine_cs *engine, + struct intel_selftest_saved_policy *saved); +int intel_selftest_wait_for_rq(struct i915_request *rq); + +#endif -- 2.28.0