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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 732D3C04A6A for ; Mon, 14 Aug 2023 05:11:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233248AbjHNFLM (ORCPT ); Mon, 14 Aug 2023 01:11:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233208AbjHNFKr (ORCPT ); Mon, 14 Aug 2023 01:10:47 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C4F0E5B; Sun, 13 Aug 2023 22:10:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691989847; x=1723525847; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=TUpy0yCpdy1QocZ9SL6jg1gXIK1RHtcIWUumpNs6efA=; b=Uwp/0Ua0pgDzAZwjgyNsRaLVOCF+OVBFYocNsHyq5C2piX48PAJCxJCV w2HLlwhhzQ7lrkf4Sf7LwIL0VsUBl/3h/5YsLZ1sIBDbPG4H6NyIm5wln 2V8Rwb5hnsbQY3FR+ee+ygpj0t/mkaIpmGIep/XWE+SST1aEg6gJt/j+/ wh4kesZ2C/R34/Q5WjEvxIzHGGULNDe266rh5TKDvzT1OAaLl/Xh4Mena D0BIP/ibAfi8whKvUJvD+VBlMNpuy0kTbsq66PhojWtBYnrlpaHAFyeEF lXvDm+Mo//5hXmOFjqeTm0liJhlZlRp0E5veCjOcX0QuRbH2l4asfT/xo A==; X-IronPort-AV: E=McAfee;i="6600,9927,10801"; a="369434655" X-IronPort-AV: E=Sophos;i="6.01,171,1684825200"; d="scan'208";a="369434655" 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 Cc: baolu.lu@linux.intel.com, Dmitry Osipenko , Marek Szyprowski , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding 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 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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