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=-6.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 73960C433E1 for ; Sun, 23 Aug 2020 21:42:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 52EAA206BE for ; Sun, 23 Aug 2020 21:42:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Bi3p+Cp3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726834AbgHWVmI (ORCPT ); Sun, 23 Aug 2020 17:42:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46602 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725995AbgHWVmI (ORCPT ); Sun, 23 Aug 2020 17:42:08 -0400 Received: from mail-lf1-x144.google.com (mail-lf1-x144.google.com [IPv6:2a00:1450:4864:20::144]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFFE4C061573; Sun, 23 Aug 2020 14:42:07 -0700 (PDT) Received: by mail-lf1-x144.google.com with SMTP id 145so551565lfi.8; Sun, 23 Aug 2020 14:42:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=Bi3p+Cp3Oib9xYvfFtUZm0Uf4rS7f9RNyKsd3tWxxONpQQc3PTzptgnmmrY8S6kGoN MOvAz8xOUY9ngcOmmuv32FeGCODgI3+OG2C1ZfXRwC80bdmDQFHZhV0g8e/8gqYcSkMK VnOoZTXbShIC6Bch87KRpZNeDTivaN6dRe3bl07uV2weQcOSTlnP8PSnJSpTAz6UwHXh jfkfJtWP6VTM0IVwVX0tTJylC0DIYkRTaV1fnQyEsy7T5f3ySgDBw7pvJhI1XA7xov8H aaOCGtjqie8LdeYqkGUwj5n+Z1y9yL6cENlISNUIdyKKFk/8rZaF0QyYzMRltPEBVOw0 WQqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=jd3Vih/FsjJhqubomzZZG87XosGkGn8YTp7d1WD+lscweSinc4Z8WoPThpQOpxmfdA K2BzfICAhxTFIYxsJ2tMGPN8GSuD2HujHjB0NmnUW6fDJnRwfW5i/GZGyIOllWkMJAZb s5Ae1wiSIYViSv/BG2nuLCe4M0VoARGymNEZ1C14kP64XfX5lWJfvtF/Enhl8zlq61Zr ir4cFp958112iym8s1jgJPzofVgnLl89Fm7qrMzbmOixX5NZx+Ynw/qT4K6ZeO7UExDb QY172l9qGp1W3AcVg8NRUfMyJx61CvsTag1kWG1JjAsCBMy1RAP9aVyi874k8x0wrSN3 ufnA== X-Gm-Message-State: AOAM531gNIji4+LPCakX2stA4t4QDkyH64iX3mlaamKx/+ksN+jZgdn1 fwHGRTr66eG9/Aw1pTVjkfmEEpIJsco= X-Google-Smtp-Source: ABdhPJzBkQVyR54HEK+tqk6nv9UaSdmG4fAbLjgLYrMh+ECOQvZhJQPh8Uzu3899cmc9YqmRioxiNg== X-Received: by 2002:a19:4ace:: with SMTP id x197mr1185909lfa.70.1598218924740; Sun, 23 Aug 2020 14:42:04 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id w8sm1807687ljm.48.2020.08.23.14.42.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Aug 2020 14:42:03 -0700 (PDT) Subject: Re: [PATCH 12/18] iommu/tegra-gart: Add IOMMU_DOMAIN_DMA support To: Robin Murphy , hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk Cc: will@kernel.org, inki.dae@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, agross@kernel.org, bjorn.andersson@linaro.org, thierry.reding@gmail.com, jonathanh@nvidia.com, vdumpa@nvidia.com, matthias.bgg@gmail.com, yong.wu@mediatek.com, geert+renesas@glider.be, magnus.damm@gmail.com, t-kristo@ti.com, s-anna@ti.com, laurent.pinchart@ideasonboard.com, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org References: <516b33118d489e56499ff8c64c019709b744110c.1597931876.git.robin.murphy@arm.com> <081f7532-9ca0-0af3-35a1-cbaba0782237@gmail.com> <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> From: Dmitry Osipenko Message-ID: Date: Mon, 24 Aug 2020 00:42:02 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 21.08.2020 03:28, Robin Murphy пишет: ... >> Will a returned NULL tell to IOMMU core that implicit domain shouldn't >> be used? Is it possible to leave this driver as-is? > > The aim of this patch was just to make the conversion without functional > changes wherever possible, i.e. maintain an equivalent to the existing > ARM behaviour of allocating its own implicit domains for everything. It > doesn't represent any judgement of whether that was ever appropriate for > this driver in the first place ;) > > Hopefully my other reply already covered the degree of control drivers > can have with proper default domains, but do shout if anything wasn't > clear. Thank you for the detailed comments! I wasn't watching closely all the recent iommu/ changes and yours clarification is very helpful! My current understanding is that the GART driver will need to support the IOMMU_DOMAIN_IDENTITY and set def_domain_type to IOMMU_DOMAIN_IDENTITY for all devices. Meanwhile, today's upstream drivers don't use GART, hence this patch should be okay. Although, it's a bit unlikely that the IOMMU_DOMAIN_DMA type will ever be useful for the GART, and thus, I'm still thinking that will be a bit nicer to keep GART driver as-is for now. 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=-6.2 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 CED4FC433E1 for ; Sun, 23 Aug 2020 21:42:14 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 9A1D9206BE for ; Sun, 23 Aug 2020 21:42:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Bi3p+Cp3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A1D9206BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 41BFC203BE; Sun, 23 Aug 2020 21:42:14 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id d7WGGQJA0NWq; Sun, 23 Aug 2020 21:42:11 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 0BAAE203D5; Sun, 23 Aug 2020 21:42:11 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D4B77C016F; Sun, 23 Aug 2020 21:42:10 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id BD8F0C0051 for ; Sun, 23 Aug 2020 21:42:09 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id AD5C285C1D for ; Sun, 23 Aug 2020 21:42:09 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id m8hRPzZwhjmD for ; Sun, 23 Aug 2020 21:42:07 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-lf1-f65.google.com (mail-lf1-f65.google.com [209.85.167.65]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 3169D85BE4 for ; Sun, 23 Aug 2020 21:42:07 +0000 (UTC) Received: by mail-lf1-f65.google.com with SMTP id k10so445872lfm.5 for ; Sun, 23 Aug 2020 14:42:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=Bi3p+Cp3Oib9xYvfFtUZm0Uf4rS7f9RNyKsd3tWxxONpQQc3PTzptgnmmrY8S6kGoN MOvAz8xOUY9ngcOmmuv32FeGCODgI3+OG2C1ZfXRwC80bdmDQFHZhV0g8e/8gqYcSkMK VnOoZTXbShIC6Bch87KRpZNeDTivaN6dRe3bl07uV2weQcOSTlnP8PSnJSpTAz6UwHXh jfkfJtWP6VTM0IVwVX0tTJylC0DIYkRTaV1fnQyEsy7T5f3ySgDBw7pvJhI1XA7xov8H aaOCGtjqie8LdeYqkGUwj5n+Z1y9yL6cENlISNUIdyKKFk/8rZaF0QyYzMRltPEBVOw0 WQqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=DTurE3DOBI0leGdyBHUYM7CQop+Q1KUMX4WeYaajHfn71IqqriFs8AmflcMlOzx4IZ z5nqytUbSozThW4L0xhzC5lycSJQ7wz1h8yIs5Am4FVtNF3bGv1vxB7515F2rRmzl3gb g+cw6jPjzH9yaiDGwLcC9p7SzFrWYzUwDy45raw5WxZsii6D/VVjlpWPIEC1diBjTItc R5n1XtpTBdTqRwZgWpsslAKvFAXVirDYVYb4UfGdR47uXgDEI93Ydyz7VUULmijikuoq H19QHk+hpG10CWF2FGdmXGT3uRdUg6Lvrvuhft0OkI8pew68oxftDimzQ6NkyoU/lK0t LHFA== X-Gm-Message-State: AOAM533rJrt/fewgvA0JcqYhz5ffV9jhf7Xd/a6AP3oFIr2nJR3DAPgF AGiOklxOh/WQOM4HXbeQLSM= X-Google-Smtp-Source: ABdhPJzBkQVyR54HEK+tqk6nv9UaSdmG4fAbLjgLYrMh+ECOQvZhJQPh8Uzu3899cmc9YqmRioxiNg== X-Received: by 2002:a19:4ace:: with SMTP id x197mr1185909lfa.70.1598218924740; Sun, 23 Aug 2020 14:42:04 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id w8sm1807687ljm.48.2020.08.23.14.42.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Aug 2020 14:42:03 -0700 (PDT) Subject: Re: [PATCH 12/18] iommu/tegra-gart: Add IOMMU_DOMAIN_DMA support To: Robin Murphy , hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk References: <516b33118d489e56499ff8c64c019709b744110c.1597931876.git.robin.murphy@arm.com> <081f7532-9ca0-0af3-35a1-cbaba0782237@gmail.com> <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> From: Dmitry Osipenko Message-ID: Date: Mon, 24 Aug 2020 00:42:02 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> Content-Language: en-US Cc: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, matthias.bgg@gmail.com, thierry.reding@gmail.com, laurent.pinchart@ideasonboard.com, will@kernel.org, linux-samsung-soc@vger.kernel.org, magnus.damm@gmail.com, kyungmin.park@samsung.com, jonathanh@nvidia.com, agross@kernel.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, inki.dae@samsung.com, linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" MjEuMDguMjAyMCAwMzoyOCwgUm9iaW4gTXVycGh5INC/0LjRiNC10YI6Ci4uLgo+PiBXaWxsIGEg cmV0dXJuZWQgTlVMTCB0ZWxsIHRvIElPTU1VIGNvcmUgdGhhdCBpbXBsaWNpdCBkb21haW4gc2hv dWxkbid0Cj4+IGJlIHVzZWQ/IElzIGl0IHBvc3NpYmxlIHRvIGxlYXZlIHRoaXMgZHJpdmVyIGFz LWlzPwo+IAo+IFRoZSBhaW0gb2YgdGhpcyBwYXRjaCB3YXMganVzdCB0byBtYWtlIHRoZSBjb252 ZXJzaW9uIHdpdGhvdXQgZnVuY3Rpb25hbAo+IGNoYW5nZXMgd2hlcmV2ZXIgcG9zc2libGUsIGku ZS4gbWFpbnRhaW4gYW4gZXF1aXZhbGVudCB0byB0aGUgZXhpc3RpbmcKPiBBUk0gYmVoYXZpb3Vy IG9mIGFsbG9jYXRpbmcgaXRzIG93biBpbXBsaWNpdCBkb21haW5zIGZvciBldmVyeXRoaW5nLiBJ dAo+IGRvZXNuJ3QgcmVwcmVzZW50IGFueSBqdWRnZW1lbnQgb2Ygd2hldGhlciB0aGF0IHdhcyBl dmVyIGFwcHJvcHJpYXRlIGZvcgo+IHRoaXMgZHJpdmVyIGluIHRoZSBmaXJzdCBwbGFjZSA7KQo+ IAo+IEhvcGVmdWxseSBteSBvdGhlciByZXBseSBhbHJlYWR5IGNvdmVyZWQgdGhlIGRlZ3JlZSBv ZiBjb250cm9sIGRyaXZlcnMKPiBjYW4gaGF2ZSB3aXRoIHByb3BlciBkZWZhdWx0IGRvbWFpbnMs IGJ1dCBkbyBzaG91dCBpZiBhbnl0aGluZyB3YXNuJ3QKPiBjbGVhci4KClRoYW5rIHlvdSBmb3Ig dGhlIGRldGFpbGVkIGNvbW1lbnRzISBJIHdhc24ndCB3YXRjaGluZyBjbG9zZWx5IGFsbCB0aGUK cmVjZW50IGlvbW11LyBjaGFuZ2VzIGFuZCB5b3VycyBjbGFyaWZpY2F0aW9uIGlzIHZlcnkgaGVs cGZ1bCEKCk15IGN1cnJlbnQgdW5kZXJzdGFuZGluZyBpcyB0aGF0IHRoZSBHQVJUIGRyaXZlciB3 aWxsIG5lZWQgdG8gc3VwcG9ydAp0aGUgSU9NTVVfRE9NQUlOX0lERU5USVRZIGFuZCBzZXQgZGVm X2RvbWFpbl90eXBlIHRvCklPTU1VX0RPTUFJTl9JREVOVElUWSBmb3IgYWxsIGRldmljZXMuCgpN ZWFud2hpbGUsIHRvZGF5J3MgdXBzdHJlYW0gZHJpdmVycyBkb24ndCB1c2UgR0FSVCwgaGVuY2Ug dGhpcyBwYXRjaApzaG91bGQgYmUgb2theS4gQWx0aG91Z2gsIGl0J3MgYSBiaXQgdW5saWtlbHkg dGhhdCB0aGUgSU9NTVVfRE9NQUlOX0RNQQp0eXBlIHdpbGwgZXZlciBiZSB1c2VmdWwgZm9yIHRo ZSBHQVJULCBhbmQgdGh1cywgSSdtIHN0aWxsIHRoaW5raW5nIHRoYXQKd2lsbCBiZSBhIGJpdCBu aWNlciB0byBrZWVwIEdBUlQgZHJpdmVyIGFzLWlzIGZvciBub3cuCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBs aXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5v cmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ== 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=-6.4 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 A85B3C433E1 for ; Sun, 23 Aug 2020 21:42:27 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 743B3206BE for ; Sun, 23 Aug 2020 21:42:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="YVVX0/Cb"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Bi3p+Cp3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 743B3206BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Wg2uDxNECd1T+byEqiR/SkTkHjuS5tYHy/NZW0I0E+s=; b=YVVX0/CbcpcDz1cw3vrDPGLHg HJ81yxjDvQki7T0YkiXVTDTBjb6vQA0bIZC0UEUVNIwyTznuanhR0j3AmMYYYoqxdnrPYOHn2A1iv OFcmQ4wOEIEkuflprILjZtJ8tzul2y/IhVAii2+ShMzP4WPNqfC4onEm9AHqoMzGL0/OvlelGUGoa KX24UxY1kn6oWVliNbgzQadNQjmaXFKm2/6ThD+gM9oioJZfplUcKsOGspE4DSas6FNTYX7oqflsW dpIP7JR4gVrJMnMBO1HgtHtepwILBzgGTbD0BDEZw5BfWl7hCdCFWChMJ7nKvLdoFTWCWcP9NUIbO 5NMoaDBMA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k9xkf-0004FM-6N; Sun, 23 Aug 2020 21:42:09 +0000 Received: from mail-lf1-x142.google.com ([2a00:1450:4864:20::142]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k9xkc-0004Eu-Je; Sun, 23 Aug 2020 21:42:08 +0000 Received: by mail-lf1-x142.google.com with SMTP id 12so3404564lfb.11; Sun, 23 Aug 2020 14:42:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=Bi3p+Cp3Oib9xYvfFtUZm0Uf4rS7f9RNyKsd3tWxxONpQQc3PTzptgnmmrY8S6kGoN MOvAz8xOUY9ngcOmmuv32FeGCODgI3+OG2C1ZfXRwC80bdmDQFHZhV0g8e/8gqYcSkMK VnOoZTXbShIC6Bch87KRpZNeDTivaN6dRe3bl07uV2weQcOSTlnP8PSnJSpTAz6UwHXh jfkfJtWP6VTM0IVwVX0tTJylC0DIYkRTaV1fnQyEsy7T5f3ySgDBw7pvJhI1XA7xov8H aaOCGtjqie8LdeYqkGUwj5n+Z1y9yL6cENlISNUIdyKKFk/8rZaF0QyYzMRltPEBVOw0 WQqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=EtM7fPcZEBqjKKMxcOp3BdVfeEnJQ2/ZVQBiBbQMuwjpGSIbqYKEbPV+5yIcbcHWpA SEdBzbx/M5tj6MJFHQ6hUu0KiTp0q6wwsX3BaE/0gz4/KecVrPJ8ExnLWZXd0rl0Y8z7 FrJ+nIZ669U9cAmS5GPYSjoFVR0YhzuDv3s0i/hxadh5vJEyqBIcjH2GqVGg7TqiEib/ rzlfbe0B1BMYuXZQyYoh01Y0qoiK7RAaMw6EMDhKhip+R2I+6CXx1SSCqJGoM1inAmdF mqdQpgDbarwixO5mHYK3AKwKayuoxg6mih5B/m4JjZbaO1Z6hoccO5EI7WPZubbYeIpv A1Cg== X-Gm-Message-State: AOAM5334aLBxa268iQM7IZwvAwItyEC4DtqGAYCD9LBlZATV8vOpYqs7 fPqZcxjqsTKBcEtxmcA3MGo= X-Google-Smtp-Source: ABdhPJzBkQVyR54HEK+tqk6nv9UaSdmG4fAbLjgLYrMh+ECOQvZhJQPh8Uzu3899cmc9YqmRioxiNg== X-Received: by 2002:a19:4ace:: with SMTP id x197mr1185909lfa.70.1598218924740; Sun, 23 Aug 2020 14:42:04 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id w8sm1807687ljm.48.2020.08.23.14.42.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Aug 2020 14:42:03 -0700 (PDT) Subject: Re: [PATCH 12/18] iommu/tegra-gart: Add IOMMU_DOMAIN_DMA support To: Robin Murphy , hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk References: <516b33118d489e56499ff8c64c019709b744110c.1597931876.git.robin.murphy@arm.com> <081f7532-9ca0-0af3-35a1-cbaba0782237@gmail.com> <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> From: Dmitry Osipenko Message-ID: Date: Mon, 24 Aug 2020 00:42:02 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200823_174206_975931_E78D8A8F X-CRM114-Status: GOOD ( 17.96 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, bjorn.andersson@linaro.org, matthias.bgg@gmail.com, thierry.reding@gmail.com, laurent.pinchart@ideasonboard.com, s-anna@ti.com, will@kernel.org, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, magnus.damm@gmail.com, kyungmin.park@samsung.com, jonathanh@nvidia.com, agross@kernel.org, yong.wu@mediatek.com, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, inki.dae@samsung.com, vdumpa@nvidia.com, linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org MjEuMDguMjAyMCAwMzoyOCwgUm9iaW4gTXVycGh5INC/0LjRiNC10YI6Ci4uLgo+PiBXaWxsIGEg cmV0dXJuZWQgTlVMTCB0ZWxsIHRvIElPTU1VIGNvcmUgdGhhdCBpbXBsaWNpdCBkb21haW4gc2hv dWxkbid0Cj4+IGJlIHVzZWQ/IElzIGl0IHBvc3NpYmxlIHRvIGxlYXZlIHRoaXMgZHJpdmVyIGFz LWlzPwo+IAo+IFRoZSBhaW0gb2YgdGhpcyBwYXRjaCB3YXMganVzdCB0byBtYWtlIHRoZSBjb252 ZXJzaW9uIHdpdGhvdXQgZnVuY3Rpb25hbAo+IGNoYW5nZXMgd2hlcmV2ZXIgcG9zc2libGUsIGku ZS4gbWFpbnRhaW4gYW4gZXF1aXZhbGVudCB0byB0aGUgZXhpc3RpbmcKPiBBUk0gYmVoYXZpb3Vy IG9mIGFsbG9jYXRpbmcgaXRzIG93biBpbXBsaWNpdCBkb21haW5zIGZvciBldmVyeXRoaW5nLiBJ dAo+IGRvZXNuJ3QgcmVwcmVzZW50IGFueSBqdWRnZW1lbnQgb2Ygd2hldGhlciB0aGF0IHdhcyBl dmVyIGFwcHJvcHJpYXRlIGZvcgo+IHRoaXMgZHJpdmVyIGluIHRoZSBmaXJzdCBwbGFjZSA7KQo+ IAo+IEhvcGVmdWxseSBteSBvdGhlciByZXBseSBhbHJlYWR5IGNvdmVyZWQgdGhlIGRlZ3JlZSBv ZiBjb250cm9sIGRyaXZlcnMKPiBjYW4gaGF2ZSB3aXRoIHByb3BlciBkZWZhdWx0IGRvbWFpbnMs IGJ1dCBkbyBzaG91dCBpZiBhbnl0aGluZyB3YXNuJ3QKPiBjbGVhci4KClRoYW5rIHlvdSBmb3Ig dGhlIGRldGFpbGVkIGNvbW1lbnRzISBJIHdhc24ndCB3YXRjaGluZyBjbG9zZWx5IGFsbCB0aGUK cmVjZW50IGlvbW11LyBjaGFuZ2VzIGFuZCB5b3VycyBjbGFyaWZpY2F0aW9uIGlzIHZlcnkgaGVs cGZ1bCEKCk15IGN1cnJlbnQgdW5kZXJzdGFuZGluZyBpcyB0aGF0IHRoZSBHQVJUIGRyaXZlciB3 aWxsIG5lZWQgdG8gc3VwcG9ydAp0aGUgSU9NTVVfRE9NQUlOX0lERU5USVRZIGFuZCBzZXQgZGVm X2RvbWFpbl90eXBlIHRvCklPTU1VX0RPTUFJTl9JREVOVElUWSBmb3IgYWxsIGRldmljZXMuCgpN ZWFud2hpbGUsIHRvZGF5J3MgdXBzdHJlYW0gZHJpdmVycyBkb24ndCB1c2UgR0FSVCwgaGVuY2Ug dGhpcyBwYXRjaApzaG91bGQgYmUgb2theS4gQWx0aG91Z2gsIGl0J3MgYSBiaXQgdW5saWtlbHkg dGhhdCB0aGUgSU9NTVVfRE9NQUlOX0RNQQp0eXBlIHdpbGwgZXZlciBiZSB1c2VmdWwgZm9yIHRo ZSBHQVJULCBhbmQgdGh1cywgSSdtIHN0aWxsIHRoaW5raW5nIHRoYXQKd2lsbCBiZSBhIGJpdCBu aWNlciB0byBrZWVwIEdBUlQgZHJpdmVyIGFzLWlzIGZvciBub3cuCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eC1tZWRpYXRlayBtYWlsaW5nIGxp c3QKTGludXgtbWVkaWF0ZWtAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFk ZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW1lZGlhdGVrCg== 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=-6.4 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 62DFBC433DF for ; Sun, 23 Aug 2020 21:44:01 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 2D37C206BE for ; Sun, 23 Aug 2020 21:44:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="slyU/b35"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Bi3p+Cp3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D37C206BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=merlin.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:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rbSjXyP1Dn408kQQmCGhzUPZYV+cm2SphVLSASXLiws=; b=slyU/b35I+bli59Vbfzys6zH9 Ol2TL4JZxG71lJuRgl1eLr7lIrMiR84Q845xdxFggI1jRuxKBfGEzrxorqoYZ3xIMw8O0RsWmqi3c H4fKJ80hSpwjPL5sb/H505Yzm5FyCeSL3VxbRa6aj4Hbc81tw4XWLV67HZMY+dDsfJFztx1MrVNBv 0OVaU6yFAcAPHTnaxXPAFpsxkGnVUBqExKqmMZsQ/y96c690PpSawq1NM6IMHiD1C+DvAt1SC83Al xdJtyd37pOjOzOSnx7SjJ5tqZ/jIPJTssGkT1eqtwOlBlx2B8Mq4a6deuuVLzkPylYXg0uf8KeJVV bzAkESiaQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k9xkg-0004FU-Ah; Sun, 23 Aug 2020 21:42:17 +0000 Received: from mail-lf1-x142.google.com ([2a00:1450:4864:20::142]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k9xkc-0004Eu-Je; Sun, 23 Aug 2020 21:42:08 +0000 Received: by mail-lf1-x142.google.com with SMTP id 12so3404564lfb.11; Sun, 23 Aug 2020 14:42:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=Bi3p+Cp3Oib9xYvfFtUZm0Uf4rS7f9RNyKsd3tWxxONpQQc3PTzptgnmmrY8S6kGoN MOvAz8xOUY9ngcOmmuv32FeGCODgI3+OG2C1ZfXRwC80bdmDQFHZhV0g8e/8gqYcSkMK VnOoZTXbShIC6Bch87KRpZNeDTivaN6dRe3bl07uV2weQcOSTlnP8PSnJSpTAz6UwHXh jfkfJtWP6VTM0IVwVX0tTJylC0DIYkRTaV1fnQyEsy7T5f3ySgDBw7pvJhI1XA7xov8H aaOCGtjqie8LdeYqkGUwj5n+Z1y9yL6cENlISNUIdyKKFk/8rZaF0QyYzMRltPEBVOw0 WQqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=EtM7fPcZEBqjKKMxcOp3BdVfeEnJQ2/ZVQBiBbQMuwjpGSIbqYKEbPV+5yIcbcHWpA SEdBzbx/M5tj6MJFHQ6hUu0KiTp0q6wwsX3BaE/0gz4/KecVrPJ8ExnLWZXd0rl0Y8z7 FrJ+nIZ669U9cAmS5GPYSjoFVR0YhzuDv3s0i/hxadh5vJEyqBIcjH2GqVGg7TqiEib/ rzlfbe0B1BMYuXZQyYoh01Y0qoiK7RAaMw6EMDhKhip+R2I+6CXx1SSCqJGoM1inAmdF mqdQpgDbarwixO5mHYK3AKwKayuoxg6mih5B/m4JjZbaO1Z6hoccO5EI7WPZubbYeIpv A1Cg== X-Gm-Message-State: AOAM5334aLBxa268iQM7IZwvAwItyEC4DtqGAYCD9LBlZATV8vOpYqs7 fPqZcxjqsTKBcEtxmcA3MGo= X-Google-Smtp-Source: ABdhPJzBkQVyR54HEK+tqk6nv9UaSdmG4fAbLjgLYrMh+ECOQvZhJQPh8Uzu3899cmc9YqmRioxiNg== X-Received: by 2002:a19:4ace:: with SMTP id x197mr1185909lfa.70.1598218924740; Sun, 23 Aug 2020 14:42:04 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id w8sm1807687ljm.48.2020.08.23.14.42.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Aug 2020 14:42:03 -0700 (PDT) Subject: Re: [PATCH 12/18] iommu/tegra-gart: Add IOMMU_DOMAIN_DMA support To: Robin Murphy , hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk References: <516b33118d489e56499ff8c64c019709b744110c.1597931876.git.robin.murphy@arm.com> <081f7532-9ca0-0af3-35a1-cbaba0782237@gmail.com> <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> From: Dmitry Osipenko Message-ID: Date: Mon, 24 Aug 2020 00:42:02 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200823_174206_975931_E78D8A8F X-CRM114-Status: GOOD ( 17.96 ) 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: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, bjorn.andersson@linaro.org, matthias.bgg@gmail.com, thierry.reding@gmail.com, laurent.pinchart@ideasonboard.com, will@kernel.org, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, magnus.damm@gmail.com, kyungmin.park@samsung.com, jonathanh@nvidia.com, agross@kernel.org, yong.wu@mediatek.com, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, inki.dae@samsung.com, linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org MjEuMDguMjAyMCAwMzoyOCwgUm9iaW4gTXVycGh5INC/0LjRiNC10YI6Ci4uLgo+PiBXaWxsIGEg cmV0dXJuZWQgTlVMTCB0ZWxsIHRvIElPTU1VIGNvcmUgdGhhdCBpbXBsaWNpdCBkb21haW4gc2hv dWxkbid0Cj4+IGJlIHVzZWQ/IElzIGl0IHBvc3NpYmxlIHRvIGxlYXZlIHRoaXMgZHJpdmVyIGFz LWlzPwo+IAo+IFRoZSBhaW0gb2YgdGhpcyBwYXRjaCB3YXMganVzdCB0byBtYWtlIHRoZSBjb252 ZXJzaW9uIHdpdGhvdXQgZnVuY3Rpb25hbAo+IGNoYW5nZXMgd2hlcmV2ZXIgcG9zc2libGUsIGku ZS4gbWFpbnRhaW4gYW4gZXF1aXZhbGVudCB0byB0aGUgZXhpc3RpbmcKPiBBUk0gYmVoYXZpb3Vy IG9mIGFsbG9jYXRpbmcgaXRzIG93biBpbXBsaWNpdCBkb21haW5zIGZvciBldmVyeXRoaW5nLiBJ dAo+IGRvZXNuJ3QgcmVwcmVzZW50IGFueSBqdWRnZW1lbnQgb2Ygd2hldGhlciB0aGF0IHdhcyBl dmVyIGFwcHJvcHJpYXRlIGZvcgo+IHRoaXMgZHJpdmVyIGluIHRoZSBmaXJzdCBwbGFjZSA7KQo+ IAo+IEhvcGVmdWxseSBteSBvdGhlciByZXBseSBhbHJlYWR5IGNvdmVyZWQgdGhlIGRlZ3JlZSBv ZiBjb250cm9sIGRyaXZlcnMKPiBjYW4gaGF2ZSB3aXRoIHByb3BlciBkZWZhdWx0IGRvbWFpbnMs IGJ1dCBkbyBzaG91dCBpZiBhbnl0aGluZyB3YXNuJ3QKPiBjbGVhci4KClRoYW5rIHlvdSBmb3Ig dGhlIGRldGFpbGVkIGNvbW1lbnRzISBJIHdhc24ndCB3YXRjaGluZyBjbG9zZWx5IGFsbCB0aGUK cmVjZW50IGlvbW11LyBjaGFuZ2VzIGFuZCB5b3VycyBjbGFyaWZpY2F0aW9uIGlzIHZlcnkgaGVs cGZ1bCEKCk15IGN1cnJlbnQgdW5kZXJzdGFuZGluZyBpcyB0aGF0IHRoZSBHQVJUIGRyaXZlciB3 aWxsIG5lZWQgdG8gc3VwcG9ydAp0aGUgSU9NTVVfRE9NQUlOX0lERU5USVRZIGFuZCBzZXQgZGVm X2RvbWFpbl90eXBlIHRvCklPTU1VX0RPTUFJTl9JREVOVElUWSBmb3IgYWxsIGRldmljZXMuCgpN ZWFud2hpbGUsIHRvZGF5J3MgdXBzdHJlYW0gZHJpdmVycyBkb24ndCB1c2UgR0FSVCwgaGVuY2Ug dGhpcyBwYXRjaApzaG91bGQgYmUgb2theS4gQWx0aG91Z2gsIGl0J3MgYSBiaXQgdW5saWtlbHkg dGhhdCB0aGUgSU9NTVVfRE9NQUlOX0RNQQp0eXBlIHdpbGwgZXZlciBiZSB1c2VmdWwgZm9yIHRo ZSBHQVJULCBhbmQgdGh1cywgSSdtIHN0aWxsIHRoaW5raW5nIHRoYXQKd2lsbCBiZSBhIGJpdCBu aWNlciB0byBrZWVwIEdBUlQgZHJpdmVyIGFzLWlzIGZvciBub3cuCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcg bGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmlu ZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg== 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=-7.1 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 800A8C433E4 for ; Mon, 24 Aug 2020 06:56:09 +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 54D6A2067C for ; Mon, 24 Aug 2020 06:56:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Bi3p+Cp3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 54D6A2067C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com 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 8CB576EC75; Mon, 24 Aug 2020 06:55:43 +0000 (UTC) Received: from mail-lf1-x141.google.com (mail-lf1-x141.google.com [IPv6:2a00:1450:4864:20::141]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7411F6E5AE for ; Sun, 23 Aug 2020 21:42:06 +0000 (UTC) Received: by mail-lf1-x141.google.com with SMTP id s9so3431331lfs.4 for ; Sun, 23 Aug 2020 14:42:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=Bi3p+Cp3Oib9xYvfFtUZm0Uf4rS7f9RNyKsd3tWxxONpQQc3PTzptgnmmrY8S6kGoN MOvAz8xOUY9ngcOmmuv32FeGCODgI3+OG2C1ZfXRwC80bdmDQFHZhV0g8e/8gqYcSkMK VnOoZTXbShIC6Bch87KRpZNeDTivaN6dRe3bl07uV2weQcOSTlnP8PSnJSpTAz6UwHXh jfkfJtWP6VTM0IVwVX0tTJylC0DIYkRTaV1fnQyEsy7T5f3ySgDBw7pvJhI1XA7xov8H aaOCGtjqie8LdeYqkGUwj5n+Z1y9yL6cENlISNUIdyKKFk/8rZaF0QyYzMRltPEBVOw0 WQqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wc4iGC6lUOkdFB1yl61K549g5r3SOsu5JHxiruFQCrg=; b=JMtgA2ieTCpACAwLJ1+17TfODySyQMPq8I8AqcQ1vrE6hPN6HU4Fd/jAUwIZeKovNt 8JmaXhWUEHwlN+DrJfzSEbV+/oUsJIZFKHGpi0k6Y7U2lfAkdUt6ofG7SvsDapZzXcrl yGx3tc2ylie0uwVaouuXQ+5hgTIWkpJh1kRJ2zegbnrYJqs+JZJ0zZSUP2Akpq+QHFNO EbHjFJ2rgjp4n/ObAVtXq2TMXKK5WaNUCkvkDGuiUTdKtv6z8PKu+gfl4Xbx71J/PmNV MJezGvoALD6pGEDLgEdJ1TPHQOVNMWO3J9ij6xswXt6IQ1YjQJtDewXqVOJ+Wa+QYJSj KbxA== X-Gm-Message-State: AOAM530gE0HA84bKpSVMqOQBoR8OsE/6MnxX67C4B6hqvcNPoDYfJEbq kzHEkDdlt6ShjEwgT9L+p2w= X-Google-Smtp-Source: ABdhPJzBkQVyR54HEK+tqk6nv9UaSdmG4fAbLjgLYrMh+ECOQvZhJQPh8Uzu3899cmc9YqmRioxiNg== X-Received: by 2002:a19:4ace:: with SMTP id x197mr1185909lfa.70.1598218924740; Sun, 23 Aug 2020 14:42:04 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id w8sm1807687ljm.48.2020.08.23.14.42.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Aug 2020 14:42:03 -0700 (PDT) Subject: Re: [PATCH 12/18] iommu/tegra-gart: Add IOMMU_DOMAIN_DMA support To: Robin Murphy , hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk References: <516b33118d489e56499ff8c64c019709b744110c.1597931876.git.robin.murphy@arm.com> <081f7532-9ca0-0af3-35a1-cbaba0782237@gmail.com> <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> From: Dmitry Osipenko Message-ID: Date: Mon, 24 Aug 2020 00:42:02 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <3a132bb0-f2e6-6f8d-6d0c-bc925dd23f06@arm.com> Content-Language: en-US X-Mailman-Approved-At: Mon, 24 Aug 2020 06:55:41 +0000 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: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, bjorn.andersson@linaro.org, matthias.bgg@gmail.com, thierry.reding@gmail.com, laurent.pinchart@ideasonboard.com, s-anna@ti.com, will@kernel.org, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, magnus.damm@gmail.com, kyungmin.park@samsung.com, jonathanh@nvidia.com, agross@kernel.org, yong.wu@mediatek.com, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, vdumpa@nvidia.com, linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" MjEuMDguMjAyMCAwMzoyOCwgUm9iaW4gTXVycGh5INC/0LjRiNC10YI6Ci4uLgo+PiBXaWxsIGEg cmV0dXJuZWQgTlVMTCB0ZWxsIHRvIElPTU1VIGNvcmUgdGhhdCBpbXBsaWNpdCBkb21haW4gc2hv dWxkbid0Cj4+IGJlIHVzZWQ/IElzIGl0IHBvc3NpYmxlIHRvIGxlYXZlIHRoaXMgZHJpdmVyIGFz LWlzPwo+IAo+IFRoZSBhaW0gb2YgdGhpcyBwYXRjaCB3YXMganVzdCB0byBtYWtlIHRoZSBjb252 ZXJzaW9uIHdpdGhvdXQgZnVuY3Rpb25hbAo+IGNoYW5nZXMgd2hlcmV2ZXIgcG9zc2libGUsIGku ZS4gbWFpbnRhaW4gYW4gZXF1aXZhbGVudCB0byB0aGUgZXhpc3RpbmcKPiBBUk0gYmVoYXZpb3Vy IG9mIGFsbG9jYXRpbmcgaXRzIG93biBpbXBsaWNpdCBkb21haW5zIGZvciBldmVyeXRoaW5nLiBJ dAo+IGRvZXNuJ3QgcmVwcmVzZW50IGFueSBqdWRnZW1lbnQgb2Ygd2hldGhlciB0aGF0IHdhcyBl dmVyIGFwcHJvcHJpYXRlIGZvcgo+IHRoaXMgZHJpdmVyIGluIHRoZSBmaXJzdCBwbGFjZSA7KQo+ IAo+IEhvcGVmdWxseSBteSBvdGhlciByZXBseSBhbHJlYWR5IGNvdmVyZWQgdGhlIGRlZ3JlZSBv ZiBjb250cm9sIGRyaXZlcnMKPiBjYW4gaGF2ZSB3aXRoIHByb3BlciBkZWZhdWx0IGRvbWFpbnMs IGJ1dCBkbyBzaG91dCBpZiBhbnl0aGluZyB3YXNuJ3QKPiBjbGVhci4KClRoYW5rIHlvdSBmb3Ig dGhlIGRldGFpbGVkIGNvbW1lbnRzISBJIHdhc24ndCB3YXRjaGluZyBjbG9zZWx5IGFsbCB0aGUK cmVjZW50IGlvbW11LyBjaGFuZ2VzIGFuZCB5b3VycyBjbGFyaWZpY2F0aW9uIGlzIHZlcnkgaGVs cGZ1bCEKCk15IGN1cnJlbnQgdW5kZXJzdGFuZGluZyBpcyB0aGF0IHRoZSBHQVJUIGRyaXZlciB3 aWxsIG5lZWQgdG8gc3VwcG9ydAp0aGUgSU9NTVVfRE9NQUlOX0lERU5USVRZIGFuZCBzZXQgZGVm X2RvbWFpbl90eXBlIHRvCklPTU1VX0RPTUFJTl9JREVOVElUWSBmb3IgYWxsIGRldmljZXMuCgpN ZWFud2hpbGUsIHRvZGF5J3MgdXBzdHJlYW0gZHJpdmVycyBkb24ndCB1c2UgR0FSVCwgaGVuY2Ug dGhpcyBwYXRjaApzaG91bGQgYmUgb2theS4gQWx0aG91Z2gsIGl0J3MgYSBiaXQgdW5saWtlbHkg dGhhdCB0aGUgSU9NTVVfRE9NQUlOX0RNQQp0eXBlIHdpbGwgZXZlciBiZSB1c2VmdWwgZm9yIHRo ZSBHQVJULCBhbmQgdGh1cywgSSdtIHN0aWxsIHRoaW5raW5nIHRoYXQKd2lsbCBiZSBhIGJpdCBu aWNlciB0byBrZWVwIEdBUlQgZHJpdmVyIGFzLWlzIGZvciBub3cuCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJp LWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=