From patchwork Sun Sep 17 21:19:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Previn X-Patchwork-Id: 13388649 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 0EE83CD13CF for ; Sun, 17 Sep 2023 21:19:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5450210E19A; Sun, 17 Sep 2023 21:19:39 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id B05FD10E102; Sun, 17 Sep 2023 21:19:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694985577; x=1726521577; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=D1kD/FFNikgO4R93gD+k7WxryDbZfY/Xi/MczS6HTzU=; b=datuLeIN3iMQLE5IS1M/DkLKM7IU2rEaelcA8LqT6sT9MF8lztb2k8Cb v9a3RoRLwoyDpse8QjdRH/M/EEukqQ2vPQJolmyIMUlwYNGh59YkZXLll lFZCR/p+hJVjauxIRmjgH68ObKfJWs2ozDB1sBH1h5CkU/9BmmMP7WDRC 0ADVz05iCVDvgrv6VDn9jmDo2RCmfAPzsi3BAEaCAe1VLBZO9D+EYnewG 1GaVV8kggNf3m1uhis2O7WX2erP939WHKAgoTI6yX2W0QQTlIfx0C03ku Fy1YnAmks0nIDPoV6iewGyrNr0Js293w6yz1GpkF/oE2cKgP0jNl7mQrS w==; X-IronPort-AV: E=McAfee;i="6600,9927,10836"; a="410487905" X-IronPort-AV: E=Sophos;i="6.02,155,1688454000"; d="scan'208";a="410487905" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Sep 2023 14:19:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10836"; a="860825086" X-IronPort-AV: E=Sophos;i="6.02,155,1688454000"; d="scan'208";a="860825086" Received: from aalteres-desk.fm.intel.com ([10.80.57.53]) by fmsmga002.fm.intel.com with ESMTP; 17 Sep 2023 14:19:36 -0700 From: Alan Previn To: intel-gfx@lists.freedesktop.org Subject: [PATCH v7 1/3] drm/i915/pxp/mtl: Update pxp-firmware response timeout Date: Sun, 17 Sep 2023 14:19:31 -0700 Message-Id: <20230917211933.1407559-2-alan.previn.teres.alexis@intel.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230917211933.1407559-1-alan.previn.teres.alexis@intel.com> References: <20230917211933.1407559-1-alan.previn.teres.alexis@intel.com> MIME-Version: 1.0 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: , Cc: Vivaik Balasubrawmanian , Daniele Ceraolo Spurio , dri-devel@lists.freedesktop.org, Alan Previn Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Update the max GSC-fw response time to match updated internal fw specs. Because this response time is an SLA on the firmware, not inclusive of i915->GuC->HW handoff latency, when submitting requests to the GSC fw via intel_gsc_uc_heci_cmd_submit helpers, start the count after the request hits the GSC command streamer. Also, move GSC_REPLY_LATENCY_MS definition from pxp header to intel_gsc_uc_heci_cmd_submit.h since its for any GSC HECI packet. Signed-off-by: Alan Previn Reviewed-by: Vivaik Balasubrawmanian --- .../i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c | 20 +++++++++++++++++-- .../i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h | 6 ++++++ drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 10 ++++------ 4 files changed, 29 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c index 89ed5ee9cded..2fde5c360cff 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c @@ -81,8 +81,17 @@ int intel_gsc_uc_heci_cmd_submit_packet(struct intel_gsc_uc *gsc, u64 addr_in, i915_request_add(rq); - if (!err && i915_request_wait(rq, 0, msecs_to_jiffies(500)) < 0) - err = -ETIME; + if (!err) { + /* + * Start timeout for i915_request_wait only after considering one possible + * pending GSC-HECI submission cycle on the other (non-privileged) path. + */ + if (wait_for(i915_request_started(rq), GSC_HECI_REPLY_LATENCY_MS)) + drm_dbg(&gsc_uc_to_gt(gsc)->i915->drm, + "Delay in gsc-heci-priv submission to gsccs-hw"); + if (i915_request_wait(rq, 0, msecs_to_jiffies(GSC_HECI_REPLY_LATENCY_MS)) < 0) + err = -ETIME; + } i915_request_put(rq); @@ -186,6 +195,13 @@ intel_gsc_uc_heci_cmd_submit_nonpriv(struct intel_gsc_uc *gsc, i915_request_add(rq); if (!err) { + /* + * Start timeout for i915_request_wait only after considering one possible + * pending GSC-HECI submission cycle on the other (privileged) path. + */ + if (wait_for(i915_request_started(rq), GSC_HECI_REPLY_LATENCY_MS)) + drm_dbg(&gsc_uc_to_gt(gsc)->i915->drm, + "Delay in gsc-heci-non-priv submission to gsccs-hw"); if (i915_request_wait(rq, I915_WAIT_INTERRUPTIBLE, msecs_to_jiffies(timeout_ms)) < 0) err = -ETIME; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h index 09d3fbdad05a..c4308291c003 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h @@ -12,6 +12,12 @@ struct i915_vma; struct intel_context; struct intel_gsc_uc; +#define GSC_HECI_REPLY_LATENCY_MS 500 +/* + * Max FW response time is 500ms, but this should be counted from the time the + * command has hit the GSC-CS hardware, not the preceding handoff to GuC CTB. + */ + struct intel_gsc_mtl_header { u32 validity_marker; #define GSC_HECI_VALIDITY_MARKER 0xA578875A diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c index b4ce7ca9b49d..27402ecf0457 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c @@ -112,7 +112,7 @@ gsccs_send_message(struct intel_pxp *pxp, ret = intel_gsc_uc_heci_cmd_submit_nonpriv(>->uc.gsc, exec_res->ce, &pkt, exec_res->bb_vaddr, - GSC_REPLY_LATENCY_MS); + GSC_HECI_REPLY_LATENCY_MS); if (ret) { drm_err(&i915->drm, "failed to send gsc PXP msg (%d)\n", ret); goto unlock; diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h index 298ad38e6c7d..9aae779c4da3 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h @@ -8,16 +8,14 @@ #include +#include "gt/uc/intel_gsc_uc_heci_cmd_submit.h" + struct intel_pxp; -#define GSC_REPLY_LATENCY_MS 210 -/* - * Max FW response time is 200ms, to which we add 10ms to account for overhead - * such as request preparation, GuC submission to hw and pipeline completion times. - */ #define GSC_PENDING_RETRY_MAXCOUNT 40 #define GSC_PENDING_RETRY_PAUSE_MS 50 -#define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS) +#define GSCFW_MAX_ROUND_TRIP_LATENCY_MS (GSC_HECI_REPLY_LATENCY_MS + \ + (GSC_PENDING_RETRY_MAXCOUNT * GSC_PENDING_RETRY_PAUSE_MS)) #ifdef CONFIG_DRM_I915_PXP void intel_pxp_gsccs_fini(struct intel_pxp *pxp);