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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 C9921C432BE for ; Fri, 6 Aug 2021 10:35:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B27BD61179 for ; Fri, 6 Aug 2021 10:35:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245264AbhHFKgE (ORCPT ); Fri, 6 Aug 2021 06:36:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245198AbhHFKfq (ORCPT ); Fri, 6 Aug 2021 06:35:46 -0400 Received: from mail-pj1-x1032.google.com (mail-pj1-x1032.google.com [IPv6:2607:f8b0:4864:20::1032]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ACB16C06179C for ; Fri, 6 Aug 2021 03:35:30 -0700 (PDT) Received: by mail-pj1-x1032.google.com with SMTP id nh14so15963613pjb.2 for ; Fri, 06 Aug 2021 03:35:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=NBP1mI1eJEmFrRBUj3/dx1CqWPqkwlbz29Jcl4m2xAk=; b=JdKNJSBvRopa3Urrf3WhX/uKXIwQujM9Ti8EciOTg67ZJ1j0meWMTB7/EibJ6XLLqC dD+TEpkqMPtcqpcMHgpUGRGGUky93D3Yq8qYpfiQjSzT/wXJfKOP6ZkUmJDGlj3cxO4t zJEiyJGmpXj/MnrRj0JdCX6l4yFXHk/TOLsgo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=NBP1mI1eJEmFrRBUj3/dx1CqWPqkwlbz29Jcl4m2xAk=; b=c/UTPe/TT1LOsCmnZI44/H7NHMqVmoizUi3fHHHz5xehrjOt5GXM8gwwe5Hrge7KXO pPoNLJInuMoy03FW50P9ZPkJMx8RHtXSK9Gr+jJgY9sEp6MxtcbxBiSpGEchdz3hgmrp sL6OH+S7bpqiILv+iy8DgqA4VPYCeI8Je6pKI1hlV8sLuEmBmWsPks6HtFnhL0lnpRmZ /G81oyc7MBxHyWMlinSMEyExhYrYMMcSdl6IkWem+F/tLeEKXq88WEBfvCGFGM5/VTXp TxPhMD+pSe+A2iYNiqsDidrYBF/JNK1yvLbXmOXPud4xs2BYxijTF+tSI/f4a88XEx8a +g0Q== X-Gm-Message-State: AOAM531yYBoAAZphxa+MhUryloh9SSNaohR+hR77kXlhR62ww48m9XXL 7ORInatQsXar29wdDqknJMuwXw== X-Google-Smtp-Source: ABdhPJyYJf8IZc/UBHsRMF484qyLGnbbn2jXQbe+CyHk6yZx9o4TB97jhd9dHES8sNQ5E1cwkJ1NBg== X-Received: by 2002:a17:90a:d190:: with SMTP id fu16mr20709870pjb.157.1628246130284; Fri, 06 Aug 2021 03:35:30 -0700 (PDT) Received: from localhost ([2401:fa00:8f:203:6f20:cf00:347a:afc2]) by smtp.gmail.com with UTF8SMTPSA id 6sm12821707pjk.1.2021.08.06.03.35.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 Aug 2021 03:35:30 -0700 (PDT) From: David Stevens X-Google-Original-From: David Stevens To: Robin Murphy Cc: Christoph Hellwig , Joerg Roedel , Will Deacon , Sergey Senozhatsky , Lu Baolu , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, David Stevens Subject: [PATCH v2 9/9] drm/i915: use DMA_ATTR_PERSISTENT_STREAMING flag Date: Fri, 6 Aug 2021 19:34:23 +0900 Message-Id: <20210806103423.3341285-10-stevensd@google.com> X-Mailer: git-send-email 2.32.0.605.g8dce9f2422-goog In-Reply-To: <20210806103423.3341285-1-stevensd@google.com> References: <20210806103423.3341285-1-stevensd@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Stevens Use the new DMA_ATTR_PERSISTENT_STREAMING for long lived dma mappings which directly handle CPU cache coherency instead of using dma_sync_*. Signed-off-by: David Stevens --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 4 +++- drivers/gpu/drm/i915/i915_gem_gtt.c | 3 ++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c index 616c3a2f1baf..df982cfb4f34 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c @@ -48,7 +48,9 @@ static struct sg_table *i915_gem_map_dma_buf(struct dma_buf_attachment *attachme src = sg_next(src); } - ret = dma_map_sgtable(attachment->dev, st, dir, DMA_ATTR_SKIP_CPU_SYNC); + ret = dma_map_sgtable(attachment->dev, st, dir, + DMA_ATTR_SKIP_CPU_SYNC | + DMA_ATTR_PERSISTENT_STREAMING); if (ret) goto err_free_sg; diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 36489be4896b..f27a849631f7 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -33,7 +33,8 @@ int i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj, PCI_DMA_BIDIRECTIONAL, DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_NO_KERNEL_MAPPING | - DMA_ATTR_NO_WARN)) + DMA_ATTR_NO_WARN | + DMA_ATTR_PERSISTENT_STREAMING)) return 0; /* -- 2.32.0.605.g8dce9f2422-goog