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 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A430C04E69 for ; Mon, 14 Aug 2023 05:11:44 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=DV37Ly/j; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4RPMvM2LVXz30Yc for ; Mon, 14 Aug 2023 15:11:43 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=DV37Ly/j; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=linux.intel.com (client-ip=192.55.52.93; helo=mgamail.intel.com; envelope-from=baolu.lu@linux.intel.com; receiver=lists.ozlabs.org) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4RPMtL6FjLz2xgp for ; Mon, 14 Aug 2023 15:10:50 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691989851; x=1723525851; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=TUpy0yCpdy1QocZ9SL6jg1gXIK1RHtcIWUumpNs6efA=; b=DV37Ly/jE4s5kobuNSHnGJ8MP89CoTPYLVBDa+IHcX1UXNnd9GAAz3MO 70pBh8v1M3UL127LtjiGLKzM302COAoaGvWAm6M+UA/+yihm63Lbzq4U0 pzgDLJk7VUgQ1dTKsfz9gxpdlrysy9SwUsY7m1Cu7K8C8ykvYn+W4q2Z8 m4SU8FfCeLe3UPyWXDe1/BF6HkVdQRAgHDiX3nv66ao2N2q9ROXP/Vh+A 9MyBDnw8Gw4yxCJjzasE3aBK2lhP7gdrLZFuY+C0hsOpnHspM/Y1Iklnj ZE+gW2Ua/xOejkYTHQ/F6se80faGJxtP+8WeiML55FD6BlJ+hbR1EO9t8 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10801"; a="369434668" X-IronPort-AV: E=Sophos;i="6.01,171,1684825200"; d="scan'208";a="369434668" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2023 22:10:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10801"; a="710202088" X-IronPort-AV: E=Sophos;i="6.01,171,1684825200"; d="scan'208";a="710202088" Received: from blu2-mobl.ccr.corp.intel.com (HELO [10.255.29.49]) ([10.255.29.49]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2023 22:10:34 -0700 Message-ID: <2997ef72-37bd-109b-d659-71f259c64eb5@linux.intel.com> Date: Mon, 14 Aug 2023 13:10:32 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Subject: Re: [PATCH v6 13/25] iommu/omap: Implement an IDENTITY domain Content-Language: en-US To: Jason Gunthorpe , Andy Gross , Alim Akhtar , Bjorn Andersson , AngeloGioacchino Del Regno , Baolin Wang , Christophe Leroy , Gerald Schaefer , Heiko Stuebner , iommu@lists.linux.dev, Jernej Skrabec , Jonathan Hunter , Joerg Roedel , Kevin Tian , Konrad Dybcio , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Russell King , linuxppc-dev@lists.ozlabs.org, Matthias Brugger , Matthew Rosato , Michael Ellerman , Nicholas Piggin , Orson Zhai , Rob Clark , Robin Murphy , Samuel Holland , Thierry Reding , Krishna Reddy , Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang References: <13-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> From: Baolu Lu In-Reply-To: <13-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thierry Reding , Niklas Schnelle , Steven Price , Nicolin Chen , Dmitry Osipenko , baolu.lu@linux.intel.com, Marek Szyprowski Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 2023/8/3 8:08, Jason Gunthorpe wrote: > What omap does during omap_iommu_set_platform_dma() is actually putting > the iommu into identity mode. > > Move to the new core support for ARM_DMA_USE_IOMMU by defining > ops->identity_domain. > > This driver does not support IOMMU_DOMAIN_DMA, however it cannot be > compiled on ARM64 either. Most likely it is fine to support dma-iommu.c > > Signed-off-by: Jason Gunthorpe > --- > drivers/iommu/omap-iommu.c | 21 ++++++++++++++++++--- > 1 file changed, 18 insertions(+), 3 deletions(-) Reviewed-by: Lu Baolu Best regards, baolu