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 38D4BC48BD1 for ; Thu, 10 Jun 2021 04:19:32 +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 0668161019 for ; Thu, 10 Jun 2021 04:19:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0668161019 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 034A66E834; Thu, 10 Jun 2021 04:19:07 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0AAF76E453; Thu, 10 Jun 2021 04:19:01 +0000 (UTC) IronPort-SDR: RkkwezSFFyH6nWGwo1mVa/2TYccTp2GQjbqXImaCOSLfPRi+Hpya4dyg8rb9AyxhFRxLucBJt5 X203MMBF/UpQ== X-IronPort-AV: E=McAfee;i="6200,9189,10010"; a="203373010" X-IronPort-AV: E=Sophos;i="5.83,262,1616482800"; d="scan'208";a="203373010" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2021 21:19:00 -0700 IronPort-SDR: xbXsEk5RuWTe8pIvsNKnvA1SEWswG3XB6RhW70SLrVtIZTg6CGlLFdVSioFUic3QTgqF4oNyV+ nbboVd0ULusw== X-IronPort-AV: E=Sophos;i="5.83,262,1616482800"; d="scan'208";a="485997262" Received: from dhiatt-server.jf.intel.com ([10.54.81.3]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2021 21:19:00 -0700 From: Matthew Brost To: , Subject: [PATCH 05/13] drm/i915/guc: Add flag for mark broken CTB Date: Wed, 9 Jun 2021 21:36:41 -0700 Message-Id: <20210610043649.144416-6-matthew.brost@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210610043649.144416-1-matthew.brost@intel.com> References: <20210610043649.144416-1-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: , Cc: daniele.ceraolospurio@intel.com, john.c.harrison@intel.com, Michal.Wajdeczko@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Michal Wajdeczko Once CTB descriptor is found in error state, either set by GuC or us, there is no need continue checking descriptor any more, we can rely on our internal flag. Signed-off-by: Matthew Brost Signed-off-by: Michal Wajdeczko Cc: Piotr Piórkowski --- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 13 +++++++++++-- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h | 2 ++ 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c index 3f7f48611487..63056ea0631e 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c @@ -123,6 +123,7 @@ static void guc_ct_buffer_desc_init(struct guc_ct_buffer_desc *desc, static void guc_ct_buffer_reset(struct intel_guc_ct_buffer *ctb, u32 cmds_addr) { + ctb->broken = false; guc_ct_buffer_desc_init(ctb->desc, cmds_addr, ctb->size); } @@ -387,9 +388,12 @@ static int ct_write(struct intel_guc_ct *ct, u32 *cmds = ctb->cmds; unsigned int i; - if (unlikely(desc->is_in_error)) + if (unlikely(ctb->broken)) return -EPIPE; + if (unlikely(desc->is_in_error)) + goto corrupted; + if (unlikely(!IS_ALIGNED(head | tail, 4) || (tail | head) >= size)) goto corrupted; @@ -451,6 +455,7 @@ static int ct_write(struct intel_guc_ct *ct, CT_ERROR(ct, "Corrupted descriptor addr=%#x head=%u tail=%u size=%u\n", desc->addr, desc->head, desc->tail, desc->size); desc->is_in_error = 1; + ctb->broken = true; return -EPIPE; } @@ -632,9 +637,12 @@ static int ct_read(struct intel_guc_ct *ct, struct ct_incoming_msg **msg) unsigned int i; u32 header; - if (unlikely(desc->is_in_error)) + if (unlikely(ctb->broken)) return -EPIPE; + if (unlikely(desc->is_in_error)) + goto corrupted; + if (unlikely(!IS_ALIGNED(head | tail, 4) || (tail | head) >= size)) goto corrupted; @@ -698,6 +706,7 @@ static int ct_read(struct intel_guc_ct *ct, struct ct_incoming_msg **msg) CT_ERROR(ct, "Corrupted descriptor addr=%#x head=%u tail=%u size=%u\n", desc->addr, desc->head, desc->tail, desc->size); desc->is_in_error = 1; + ctb->broken = true; return -EPIPE; } diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h index cb222f202301..7d3cd375d6a7 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h @@ -32,12 +32,14 @@ struct intel_guc; * @desc: pointer to the buffer descriptor * @cmds: pointer to the commands buffer * @size: size of the commands buffer + * @broken: flag to indicate if descriptor data is broken */ struct intel_guc_ct_buffer { spinlock_t lock; struct guc_ct_buffer_desc *desc; u32 *cmds; u32 size; + bool broken; }; -- 2.28.0