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=-5.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 8376BC3A59E for ; Wed, 21 Aug 2019 15:25:07 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 551BA206BA for ; Wed, 21 Aug 2019 15:25:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="he/rMiwV"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="RiD+8qlu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 551BA206BA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wlar3UWXeP94CJ3/LG+lgDaVI7G18At8ojfHNh+dEUU=; b=he/rMiwV3MbpMH OYBr+qF/oyaUiSBfhkAGtfQpGtuO+tx+ioR65QniB+efLhdpz6RTYT3T32pdySIxQpjBFyS8KcWvZ 25ZRjelE6a3+L5YWlwPnYkbw3Ybxgs7R3qxhoVbfqkDHh5rwtaGWuIM7oWklIvBdiSMGtNv9hgu73 mjTbuSORQrKgGTXD7VF6qIoogX07heiaVGllY5p9iIOZCTfJESSXbRMZzjqbmhrmGUH04d+vvj80c KgJ/HCsqCzAAlUS6Jxuf9cXQQ7j6E8wb83M8nVhwXYZQxJhGXLKlmhEgyuXLLsXTyc0gocQt9+6fd M36cspWG8ooZQGvlWAgg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i0STp-0000OL-Vq; Wed, 21 Aug 2019 15:24:57 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i0STn-0000Nh-Hp; Wed, 21 Aug 2019 15:24:56 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 01291206BA; Wed, 21 Aug 2019 15:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566401095; bh=aJZsxkGaQIRowffpW+JaxO8NMT7WvvZzsQ6yeIDlrnk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=RiD+8qlujqamNghbph/UTRtAZcnnXOpbJFfcJRF+s/5Mrfv1RKTDq2/TyeRJwLysN WJYvAUdnD9ZieVbBt5P/zVGwMp/DMlFpIVIjbWDQDAXI/qNLEkrtPTM8+HKzJyLsf8 Rg6tay5H6JGnc5+Qh8NBXe3tmebq2AFCmCoYet2I= Date: Wed, 21 Aug 2019 16:24:49 +0100 From: Will Deacon To: Yong Wu Subject: Re: [PATCH v10 09/23] iommu/io-pgtable-arm-v7s: Extend to support PA[33:32] for MediaTek Message-ID: <20190821152448.qmoqjh5zznfpdi6n@willie-the-truck> References: <1566395606-7975-1-git-send-email-yong.wu@mediatek.com> <1566395606-7975-10-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1566395606-7975-10-git-send-email-yong.wu@mediatek.com> User-Agent: NeoMutt/20170113 (1.7.2) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190821_082455_614632_3A3542E4 X-CRM114-Status: GOOD ( 14.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , cui.zhang@mediatek.com, srv_heupstream@mediatek.com, chao.hao@mediatek.com, Joerg Roedel , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , ming-fan.chen@mediatek.com, anan.sun@mediatek.com, Robin Murphy , Matthias Kaehlcke , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Aug 21, 2019 at 09:53:12PM +0800, Yong Wu wrote: > MediaTek extend the arm v7s descriptor to support up to 34 bits PA where > the bit32 and bit33 are encoded in the bit9 and bit4 of the PTE > respectively. Meanwhile the iova still is 32bits. > > Regarding whether the pagetable address could be over 4GB, the mt8183 > support it while the previous mt8173 don't, thus keep it as is. > > Signed-off-by: Yong Wu > --- > drivers/iommu/io-pgtable-arm-v7s.c | 32 +++++++++++++++++++++++++------- > include/linux/io-pgtable.h | 7 +++---- > 2 files changed, 28 insertions(+), 11 deletions(-) [...] > @@ -731,7 +747,9 @@ static struct io_pgtable *arm_v7s_alloc_pgtable(struct io_pgtable_cfg *cfg, > { > struct arm_v7s_io_pgtable *data; > > - if (cfg->ias > ARM_V7S_ADDR_BITS || cfg->oas > ARM_V7S_ADDR_BITS) > + if (cfg->ias > ARM_V7S_ADDR_BITS || > + (cfg->oas > ARM_V7S_ADDR_BITS && > + !(cfg->quirks & IO_PGTABLE_QUIRK_ARM_MTK_EXT))) Please can you instead change arm_v7s_alloc_pgtable() so that it allows an ias of up to 34 when the IO_PGTABLE_QUIRK_ARM_MTK_EXT is set? With that change: Acked-by: Will Deacon Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel