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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 203EEC433E0 for ; Thu, 11 Jun 2020 22:29:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE2BB2073E for ; Thu, 11 Jun 2020 22:29:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="Cp4c/d1s" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726369AbgFKW3b (ORCPT ); Thu, 11 Jun 2020 18:29:31 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:59709 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726339AbgFKW3a (ORCPT ); Thu, 11 Jun 2020 18:29:30 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1591914570; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=2ISXN2Jfej+BB8O1Al43XIMTVjOYQJJpTZ3rGr3Vsro=; b=Cp4c/d1sL8ZDyTpGszJqfmiw/SPdCA6v95kFz7Zro6Ppp13gtKYRPQmtl6mypPI6wRYWCki3 3bMCo95kuQ6aqB/VeDs/aCv8CrMlpoEounBBwCfVfPuaFbzwiNoSG0hQFpej9ftRHNTHvqrm TYizCAmkq2eWmZj24uTMLbA3hys= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n15.prod.us-east-1.postgun.com with SMTP id 5ee2b0490206ad41d1d0ada9 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 11 Jun 2020 22:29:29 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 0AC36C4344B; Thu, 11 Jun 2020 22:29:27 +0000 (UTC) Received: from jordan-laptop.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jcrouse) by smtp.codeaurora.org (Postfix) with ESMTPSA id 0FD0FC433CA; Thu, 11 Jun 2020 22:29:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 0FD0FC433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=jcrouse@codeaurora.org From: Jordan Crouse To: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org, iommu@lists.linux-foundation.org, Akhil P Oommen , Daniel Vetter , David Airlie , Eric Anholt , Joerg Roedel , Joerg Roedel , Jonathan Marek , Rob Clark , Robin Murphy , Sean Paul , Sharat Masetty , Will Deacon , Yong Wu , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/6] iommu-arm-smmu: Add auxiliary domains and per-instance pagetables Date: Thu, 11 Jun 2020 16:29:15 -0600 Message-Id: <20200611222921.464-1-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a new refresh of support for auxiliary domains for arm-smmu-v2 and per-instance pagetables for drm/msm. The big change here from past efforts is that outside of creating a single aux-domain to enable TTBR0 all of the per-instance pagetables are created and managed exclusively in drm/msm without involving the arm-smmu driver. This fits in with the suggested model of letting the GPU hardware do what it needs and leave the arm-smmu driver blissfully unaware. Almost. In order to set up the io-pgtable properly in drm/msm we need to query the pagetable configuration from the current active domain and we need to rely on the iommu API to flush TLBs after a unmap. In the future we can optimize this in the drm/msm driver to track the state of the TLBs but for now the big hammer lets us get off the ground. This series is build on the split pagetable support [1]. [1] https://patchwork.kernel.org/patch/11600949/ Jordan Crouse (6): iommu/arm-smmu: Add auxiliary domain support for arm-smmuv2 iommu/io-pgtable: Allow a pgtable implementation to skip TLB operations iommu/arm-smmu: Add a domain attribute to pass the pagetable config drm/msm: Add support to create a local pagetable drm/msm: Add support for address space instances drm/msm/a6xx: Add support for per-instance pagetables drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 69 +++++++- drivers/gpu/drm/msm/msm_drv.c | 15 +- drivers/gpu/drm/msm/msm_drv.h | 4 + drivers/gpu/drm/msm/msm_gem_vma.c | 9 + drivers/gpu/drm/msm/msm_gpu.c | 17 ++ drivers/gpu/drm/msm/msm_gpu.h | 5 + drivers/gpu/drm/msm/msm_gpummu.c | 2 +- drivers/gpu/drm/msm/msm_iommu.c | 180 +++++++++++++++++++- drivers/gpu/drm/msm/msm_mmu.h | 16 +- drivers/gpu/drm/msm/msm_ringbuffer.h | 1 + drivers/iommu/arm-smmu.c | 228 ++++++++++++++++++++++++-- drivers/iommu/arm-smmu.h | 1 + include/linux/io-pgtable.h | 11 +- include/linux/iommu.h | 1 + 14 files changed, 529 insertions(+), 30 deletions(-) -- 2.17.1