From patchwork Fri May 1 07:39:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Stultz X-Patchwork-Id: 201253 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=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 185FFC47256 for ; Fri, 1 May 2020 07:39:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EC0F121924 for ; Fri, 1 May 2020 07:39:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="uSMKBOO6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728297AbgEAHj6 (ORCPT ); Fri, 1 May 2020 03:39:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728212AbgEAHj6 (ORCPT ); Fri, 1 May 2020 03:39:58 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5833C035494 for ; Fri, 1 May 2020 00:39:56 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id x15so1294520pfa.1 for ; Fri, 01 May 2020 00:39:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=7dbuQPhIsTcQHi6Sc8OBXbUFsIKd1Ghgu7yJHTjcrBA=; b=uSMKBOO6QIs4uLVfahwgnBUw2gO5QWpFhQb6F1MFxTptPMF+Z0o/WwC6bov2PX1B+z GpMi0QLlCm5bjeCQb1Ib4KAhIABJItLI42QmCZQZGMtFoAd5BloKynNn9kQq3/e29zu2 9IyjzXDmbfN8mJesTXXH8vGo6U5pKfc97OK3wq90VHEBym+PgXw/vn++YmU/npiUaTr5 EKndS27RG5ykIcMNfuIjRBSN+x85vpHDVdCcNP20vltiVGnPnJOhrLIPCacJWk+nw8H5 h/1ZfEiY9PDJtMZv9WMs5aKqGIRak+Cy8hyL1nVn2z4TqrdRTnPu7SgigutOZnbMfMx7 2gGg== 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; bh=7dbuQPhIsTcQHi6Sc8OBXbUFsIKd1Ghgu7yJHTjcrBA=; b=DbrtYOg6D0iHvVaPjRcOGUiMBBX+6ztEryg1FPeJF6JTNo1UG+lAIMtur4/pFNz64a Add5ZfT2oAT3dlbpgIO68a5k4En9pnrTkIWI0x2QwOw17cfRNXHOlkTBF/05wOvKTPL4 59Dl8PxNlnw+rIWHfbsLUZAHGI/8GDkNxo4Zne9yi7ru4UM3yeMIqpVFkH+zjREwkmHb 5aJPp7i65dP3Ce2nWy9XjJ9Vy6sEkm8jTSxTQeTAzDEDB3ReLf5PGM3scKa1+lrkf16l iWnj47EWChJgn/St6ipLc8tNe02envEgEjRMD2781JqzZYfzdD3PAKSuHQdo5v0FHVom xI6g== X-Gm-Message-State: AGi0Pua9Y9lrJe2IYpQRiVv2CbfqmNIKxCrJvJgd5FoewYd3Yk3IhPJz d42dI2vysB/X3Bhgxw/0EKdHEA== X-Google-Smtp-Source: APiQypJ4tRvRarVqfbdjkqTxsXvJvyOp8AuLCGCLRECI0h2PDJqsBBZbjfCR605Pbtspben2FOegvQ== X-Received: by 2002:a62:7bcf:: with SMTP id w198mr2002566pfc.226.1588318796201; Fri, 01 May 2020 00:39:56 -0700 (PDT) Received: from localhost.localdomain ([2601:1c2:680:1319:692:26ff:feda:3a81]) by smtp.gmail.com with ESMTPSA id w12sm1557841pfq.133.2020.05.01.00.39.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 May 2020 00:39:55 -0700 (PDT) From: John Stultz To: lkml Cc: John Stultz , Rob Herring , Sumit Semwal , "Andrew F. Davis" , Benjamin Gaignard , Liam Mark , Pratik Patel , Laura Abbott , Brian Starkey , Chenbo Feng , Alistair Strachan , Sandeep Patil , Hridya Valsaraju , Christoph Hellwig , Marek Szyprowski , Robin Murphy , Andrew Morton , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org Subject: [RFC][PATCH 0/4] Support non-default CMA regions to the dmabuf heaps interface Date: Fri, 1 May 2020 07:39:45 +0000 Message-Id: <20200501073949.120396-1-john.stultz@linaro.org> X-Mailer: git-send-email 2.17.1 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This is a much belated second stab at allowing non-default CMA regions to be exposed via the dmabuf heaps interface. Previous attempt was here: https://lore.kernel.org/lkml/20191025225009.50305-2-john.stultz@linaro.org/T/ This pass tried to take Rob's earlier suggestion to use a flag property. Feedback would be greatly welcome! thanks -john Cc: Rob Herring Cc: Sumit Semwal Cc: "Andrew F. Davis" Cc: Benjamin Gaignard Cc: Liam Mark Cc: Pratik Patel Cc: Laura Abbott Cc: Brian Starkey Cc: Chenbo Feng Cc: Alistair Strachan Cc: Sandeep Patil Cc: Hridya Valsaraju Cc: Christoph Hellwig Cc: Marek Szyprowski Cc: Robin Murphy Cc: Andrew Morton Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-mm@kvack.org John Stultz (4): devicetree: bindings: Add linux,cma-heap tag for reserved memory mm: cma: Add dma_heap flag to cma structure dma-buf: cma_heap: Extend logic to export CMA regions tagged with "linux,cma-heap" example: dts: hi3660-hikey960: Add dts entries to test cma heap binding .../reserved-memory/reserved-memory.txt | 3 +++ .../boot/dts/hisilicon/hi3660-hikey960.dts | 7 +++++++ drivers/dma-buf/heaps/cma_heap.c | 18 +++++++++--------- include/linux/cma.h | 3 +++ kernel/dma/contiguous.c | 3 +++ mm/cma.c | 11 +++++++++++ mm/cma.h | 1 + 7 files changed, 37 insertions(+), 9 deletions(-)