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: 11522235 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D9D511575 for ; Fri, 1 May 2020 07:40:01 +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 B78392071C for ; Fri, 1 May 2020 07:40:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="uSMKBOO6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B78392071C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org 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 EA6536E03D; Fri, 1 May 2020 07:39:57 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by gabe.freedesktop.org (Postfix) with ESMTPS id A23616E03D for ; Fri, 1 May 2020 07:39:56 +0000 (UTC) Received: by mail-pf1-x441.google.com with SMTP id 145so1262831pfw.13 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=hpCSGpZ8O9YK/iwmEge8Gbzvonl7r4eZqCz2yV6vNlRyd21Iikr31dU7ds1j57Q/YK 0EOXMY88zNGzPUOTtrXVGvRmsroXAQkm77ZUR84LB1tZb+CL0b2xOGYc8DCuEA0mu5n2 NuaaTVZbsz4drEFeIl/R8GPn6WuBGcNAP7GzS+kmVXIu0Bj6K5nx2k+DOQku0MYZ2sl3 6nWXSw/3k1xHxiSjN8SJSwZc4T1+yKi2jCIWHqQDz8nGaAGqjgA1UQzpLoWGdzSX65mW NtTWI9Rj7VmFIOIdIIy/d59Pm23tyM7p4UpiiCcYQSoe9MYyWqHlw7igdKGg8HIyEY8u TBaA== X-Gm-Message-State: AGi0PuYPiAgJ7bv9RByZgyvPTYcNB/o7UG3LrbZeJEumI1IlEWNET4Hl op5nGY/OvGMXI45ko5lfjLHVDg== 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 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 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: devicetree@vger.kernel.org, Sandeep Patil , Christoph Hellwig , Robin Murphy , Chenbo Feng , Alistair Strachan , Liam Mark , "Andrew F. Davis" , linux-mm@kvack.org, Rob Herring , dri-devel@lists.freedesktop.org, Hridya Valsaraju , Andrew Morton , Laura Abbott , Pratik Patel , Marek Szyprowski MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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(-)