From patchwork Thu May 6 19:14:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 12243371 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=unavailable 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 CE785C433B4 for ; Thu, 6 May 2021 19:01:20 +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 8C50F610D2 for ; Thu, 6 May 2021 19:01:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C50F610D2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 309B36EE28; Thu, 6 May 2021 18:58:03 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6243A6ED83; Thu, 6 May 2021 18:57:14 +0000 (UTC) IronPort-SDR: nrL1u7iIB6bfAW7uir+72m5JEaaSi6UOhw5sMnYzDs/gsaxhTasFRMHuvXDk3cUIRCjeWM3cCp aWupDUhqEbbg== X-IronPort-AV: E=McAfee;i="6200,9189,9976"; a="198195461" X-IronPort-AV: E=Sophos;i="5.82,278,1613462400"; d="scan'208";a="198195461" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2021 11:57:13 -0700 IronPort-SDR: YNP9Or8geQ8w4UZqP/xGTRFGl8hkPpLcTBzbFk3XKaJ3Njy3Gu76uyKZBQgDNk0XtkpAKbLOHd 9Uu6AepORC9A== X-IronPort-AV: E=Sophos;i="5.82,278,1613462400"; d="scan'208";a="469583606" Received: from dhiatt-server.jf.intel.com ([10.54.81.3]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2021 11:57:12 -0700 From: Matthew Brost To: , Date: Thu, 6 May 2021 12:14:30 -0700 Message-Id: <20210506191451.77768-77-matthew.brost@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210506191451.77768-1-matthew.brost@intel.com> References: <20210506191451.77768-1-matthew.brost@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [RFC PATCH 76/97] drm/i915/guc: Hook GuC scheduling policies up X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jason.ekstrand@intel.com, daniel.vetter@intel.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: John Harrison Use the official driver default scheduling policies for configuring the GuC scheduler rather than a bunch of hardcoded values. Signed-off-by: John Harrison Signed-off-by: Matthew Brost Cc: Jose Souza --- drivers/gpu/drm/i915/gt/intel_engine_types.h | 1 + drivers/gpu/drm/i915/gt/uc/intel_guc.h | 2 + drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 44 ++++++++++++++++++- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 11 +++-- 4 files changed, 53 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index bba53e3b39b9..16cc8453b01c 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -461,6 +461,7 @@ struct intel_engine_cs { #define I915_ENGINE_IS_VIRTUAL BIT(5) #define I915_ENGINE_HAS_RELATIVE_MMIO BIT(6) #define I915_ENGINE_REQUIRES_CMD_PARSER BIT(7) +#define I915_ENGINE_WANT_FORCED_PREEMPTION BIT(8) unsigned int flags; /* diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h index 10b48b9f7603..266358d04bfc 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h @@ -271,6 +271,8 @@ int intel_guc_engine_failure_process_msg(struct intel_guc *guc, void intel_guc_find_hung_context(struct intel_engine_cs *engine); +int intel_guc_global_policies_update(struct intel_guc *guc); + void intel_guc_submission_reset_prepare(struct intel_guc *guc); void intel_guc_submission_reset(struct intel_guc *guc, bool stalled); void intel_guc_submission_reset_finish(struct intel_guc *guc); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c index 179ab658d2b5..b37473bc8fff 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c @@ -80,14 +80,54 @@ static u32 guc_ads_blob_size(struct intel_guc *guc) guc_ads_private_data_size(guc); } -static void guc_policies_init(struct guc_policies *policies) +static void guc_policies_init(struct intel_guc *guc, struct guc_policies *policies) { + struct intel_gt *gt = guc_to_gt(guc); + struct drm_i915_private *i915 = gt->i915; + policies->dpc_promote_time = GLOBAL_POLICY_DEFAULT_DPC_PROMOTE_TIME_US; policies->max_num_work_items = GLOBAL_POLICY_MAX_NUM_WI; + policies->global_flags = 0; + if (i915->params.reset < 2) + policies->global_flags |= GLOBAL_POLICY_DISABLE_ENGINE_RESET; + policies->is_valid = 1; } +static int guc_action_policies_update(struct intel_guc *guc, u32 policy_offset) +{ + u32 action[] = { + INTEL_GUC_ACTION_GLOBAL_SCHED_POLICY_CHANGE, + policy_offset + }; + + return intel_guc_send(guc, action, ARRAY_SIZE(action)); +} + +int intel_guc_global_policies_update(struct intel_guc *guc) +{ + struct __guc_ads_blob *blob = guc->ads_blob; + struct intel_gt *gt = guc_to_gt(guc); + intel_wakeref_t wakeref; + int ret; + + if (!blob) + return -ENOTSUPP; + + GEM_BUG_ON(!blob->ads.scheduler_policies); + + guc_policies_init(guc, &blob->policies); + + if (!intel_guc_is_ready(guc)) + return 0; + + with_intel_runtime_pm(>->i915->runtime_pm, wakeref) + ret = guc_action_policies_update(guc, blob->ads.scheduler_policies); + + return ret; +} + static void guc_mapping_table_init(struct intel_gt *gt, struct guc_gt_system_info *system_info) { @@ -284,7 +324,7 @@ static void __guc_ads_init(struct intel_guc *guc) u8 engine_class, guc_class; /* GuC scheduling policies */ - guc_policies_init(&blob->policies); + guc_policies_init(guc, &blob->policies); /* * GuC expects a per-engine-class context image and size diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index ad3d2326a81d..a9fb31370c61 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -872,6 +872,7 @@ void intel_guc_submission_reset_finish(struct intel_guc *guc) GEM_WARN_ON(atomic_read(&guc->outstanding_submission_g2h)); atomic_set(&guc->outstanding_submission_g2h, 0); + intel_guc_global_policies_update(guc); enable_submission(guc); intel_gt_unpark_heartbeats(guc_to_gt(guc)); } @@ -1160,8 +1161,12 @@ static void guc_context_policy_init(struct intel_engine_cs *engine, { desc->policy_flags = 0; - desc->execution_quantum = CONTEXT_POLICY_DEFAULT_EXECUTION_QUANTUM_US; - desc->preemption_timeout = CONTEXT_POLICY_DEFAULT_PREEMPTION_TIME_US; + if (engine->flags & I915_ENGINE_WANT_FORCED_PREEMPTION) + desc->policy_flags |= CONTEXT_POLICY_FLAG_PREEMPT_TO_IDLE; + + /* NB: For both of these, zero means disabled. */ + desc->execution_quantum = engine->props.timeslice_duration_ms * 1000; + desc->preemption_timeout = engine->props.preempt_timeout_ms * 1000; } static int guc_lrc_desc_pin(struct intel_context *ce, bool loop) @@ -1942,13 +1947,13 @@ static void guc_default_vfuncs(struct intel_engine_cs *engine) engine->set_default_submission = guc_set_default_submission; engine->flags |= I915_ENGINE_HAS_PREEMPTION; + engine->flags |= I915_ENGINE_HAS_TIMESLICES; /* * TODO: GuC supports timeslicing and semaphores as well, but they're * handled by the firmware so some minor tweaks are required before * enabling. * - * engine->flags |= I915_ENGINE_HAS_TIMESLICES; * engine->flags |= I915_ENGINE_HAS_SEMAPHORES; */