From patchwork Fri Jun 26 20:04:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jordan Crouse X-Patchwork-Id: 11628571 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 78465618 for ; Fri, 26 Jun 2020 20:04:55 +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 57C302100A for ; Fri, 26 Jun 2020 20:04:55 +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="tXZVY6LZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 57C302100A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org 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 B951C6E4C9; Fri, 26 Jun 2020 20:04:53 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail29.static.mailgun.info (mail29.static.mailgun.info [104.130.122.29]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2B2076ED0B for ; Fri, 26 Jun 2020 20:04:48 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1593201892; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=Y52DfZmPsADiviryLIjbB10Q7p9PKIz9PJgeiGWZpfo=; b=tXZVY6LZV0JEX1utO9N9gd7rDx4f9x9TEkFVf+MOsF7YcBVd25TmulxDTD4WJf5kETQ42hA6 0PDkGKk7////sbCEvZxdXlK0C7toyu1SXQcXQ9V1DXuy51Fro0UTVHHM36JsZawujWlCyf/3 uF2H54nOlwkpTN75ZVb0CaWY3Nk= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyJkOTU5ZSIsICJkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n06.prod.us-east-1.postgun.com with SMTP id 5ef654c8567385e8e7bdf8c2 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 26 Jun 2020 20:04:24 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id D135BC4345D; Fri, 26 Jun 2020 20:04:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 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 B0451C433C6; Fri, 26 Jun 2020 20:04:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B0451C433C6 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 Subject: [PATCH v2 0/6] iommu-arm-smmu: Add auxiliary domains and per-instance pagetables Date: Fri, 26 Jun 2020 14:04:08 -0600 Message-Id: <20200626200414.14382-1-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.17.1 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: Sean Paul , Sai Prakash Ranjan , Joerg Roedel , Jonathan Marek , David Airlie , Robin Murphy , Joerg Roedel , Will Deacon , Akhil P Oommen , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, freedreno@lists.freedesktop.org, Sharat Masetty , Yong Wu , Emil Velikov MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 built on the split pagetable support [1]. [1] https://patchwork.kernel.org/patch/11628543/ v2: Remove unneeded cruft in the a6xx page switch sequence 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 | 43 +++++ 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 | 231 ++++++++++++++++++++++++-- drivers/iommu/arm-smmu.h | 1 + include/linux/io-pgtable.h | 11 +- include/linux/iommu.h | 1 + 14 files changed, 507 insertions(+), 29 deletions(-)