Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp4760696yba;
        Tue, 30 Apr 2019 04:04:11 -0700 (PDT)
X-Google-Smtp-Source: APXvYqxiKof9ojyUeAf7S1pBPXu2YcLl7qtQAG6J4hWkiS56YCB2/8I7s0vI/WnBxTdsiqJQN6jF
X-Received: by 2002:aa7:8458:: with SMTP id r24mr19874408pfn.231.1556622250891;
        Tue, 30 Apr 2019 04:04:10 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1556622250; cv=none;
        d=google.com; s=arc-20160816;
        b=M18dFUOkcQtc8fsTdqq0Vf2EAhgrdWi4jkPTeqpXeCstv1uGn9isLi0V+q6AZD0/nB
         cL+Ru50o3tEI93/ElFkjtu26X61rZpSMAK31MFhQp+xqRrT96wVM+54L1RLj5PMu887T
         Amgai7aQoji8QYC+CPo31iWVGN7nuv6h76Envl5MAb/Ab3TFXjO8TWtlPw4Vy3YwLZfF
         YFLyCXX/K2qUKm0AbgrbD+CggAhDTVGEKv16BlRNQgciUQmQe78hxEMniLwY80m464fi
         812qhgVx6bxkRP43dz66HNnQoZ3adDrUNpk41XrkPB3JumaLUiCZJ8021r9rCKP8N+Sl
         FWwg==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:sender:content-transfer-encoding:mime-version
         :message-id:date:subject:cc:to:from:dkim-signature;
        bh=PAuk9r9abU+3dCJ7MGM4b0v1HEZtMK1t3kVmT53GYTk=;
        b=zUdgx7X5T96qKGnd5prYgTQEm4KbydStFXxArWeVTaUktYXUG1TQggXESVNU4HSRkp
         5Mlm/gGkT48yb4MZKByq7kslXxOsIn5UN7gdtMApte/erpeQ2Z8q7b4FD1gPIINXyIt5
         BuWNYtUZxqzREdpa/KKwUpCM8czoKMIycn5YRUlb/9g6NE/+W+MuyWG0MnhNUymLyN4o
         17jvOZAxFfkE7y+nEmbYZQ7HbE9cp5cLhlJ+URU1c3gP2BQZoNgEIWIIxR+UiJe9iu88
         G+gCObdK6HuC0jGfQXVNNvOLzCPgGvgOaj1dOtps8vCKshFOdqgCxPXZttmnZbDipnGW
         ZU8g==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=baoWPhmm;
       spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67])
        by mx.google.com with ESMTP id o70si37220727pfa.33.2019.04.30.04.03.53;
        Tue, 30 Apr 2019 04:04:10 -0700 (PDT)
Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Authentication-Results: mx.google.com;
       dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=baoWPhmm;
       spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1727491AbfD3LBN (ORCPT <rfc822;1990.zhangzhen@gmail.com>
        + 99 others); Tue, 30 Apr 2019 07:01:13 -0400
Received: from bombadil.infradead.org ([198.137.202.133]:43184 "EHLO
        bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1726646AbfD3LBN (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Tue, 30 Apr 2019 07:01:13 -0400
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
        d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding:
        MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:
        Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:
        Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:
        List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
         bh=PAuk9r9abU+3dCJ7MGM4b0v1HEZtMK1t3kVmT53GYTk=; b=baoWPhmm7krqFeob9riojtfuO
        CYckS+yO4JyaBL3bHVkCqG90pyiYW52H+sbi63c3dAbKAIZ/ILLKhekzKXYE1/beWP+Qjn2c8zIjc
        OwmTY/zEDh1LIDSGkFjwgTFvnsdP4HpVOpvY6XZYXdnrRdl5pwABT1MBFbLMtpP8GoIisqD5hZjhf
        QEKNB5lmBx/6adfw1Dka4bg2huZeFLXdefqqRBAnSU9w554+5WFMKuJOwlZnd3x8FSdMwWI9O01Fu
        SBNuZa/oC5RnLerY55f0/oU1wPwHV/FQk9Et3pIwJlrz69/UhWRHmlSbRpiYK8j5pPLham6Fzz95b
        tr1KcrGIw==;
Received: from adsl-173-228-226-134.prtc.net ([173.228.226.134] helo=localhost)
        by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux))
        id 1hLQVZ-0000GR-R4; Tue, 30 Apr 2019 11:01:10 +0000
From:   Christoph Hellwig <hch@lst.de>
To:     Ralf Baechle <ralf@linux-mips.org>,
        Paul Burton <paul.burton@mips.com>,
        James Hogan <jhogan@kernel.org>,
        Ley Foon Tan <lftan@altera.com>,
        Michal Simek <monstr@monstr.eu>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc:     linux-mips@vger.kernel.org, iommu@lists.linux-foundation.org,
        linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org
Subject: provide generic support for uncached segements in dma-direct
Date:   Tue, 30 Apr 2019 07:00:25 -0400
Message-Id: <20190430110032.25301-1-hch@lst.de>
X-Mailer: git-send-email 2.20.1
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> by bombadil.infradead.org. See http://www.infradead.org/rpr.html
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi all,

can you take a look at this series?  It lifts the support for mips-style
uncached segements to the dma-direct layer, thus removing the need
to have arch_dma_alloc/free routines for these architectures.