From patchwork Tue Jan 28 22:00:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jordan Crouse X-Patchwork-Id: 11355245 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 D32EC139A for ; Tue, 28 Jan 2020 22:00:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B1B412467E for ; Tue, 28 Jan 2020 22:00:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="cTtOAObT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726266AbgA1WAr (ORCPT ); Tue, 28 Jan 2020 17:00:47 -0500 Received: from mail25.static.mailgun.info ([104.130.122.25]:15103 "EHLO mail25.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726257AbgA1WAj (ORCPT ); Tue, 28 Jan 2020 17:00:39 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1580248838; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=Mf6gK8Pui4SYiZYwgie2fpyV4QvxBlRoxDwIb21t6R0=; b=cTtOAObTzso2VFF5OMRg4MkjhB2JCC52OFc+Hjjq7xgMjQNFPlGa210qs0hFK534XTOGHqoD qTU1sSyeN2wgS5MKbG1bThOXUWKx8bCo2RSq9mYiJV1nXmAgXT5G6cTO7rEaWitOpo1Wzyj3 7vY+ru8NDm5NN9NRV/JuIuxbjkE= X-Mailgun-Sending-Ip: 104.130.122.25 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e30af04.7fa9e5dc7880-smtp-out-n02; Tue, 28 Jan 2020 22:00:36 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 4BE32C447B3; Tue, 28 Jan 2020 22:00:34 +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, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from jcrouse1-lnx.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jcrouse) by smtp.codeaurora.org (Postfix) with ESMTPSA id 914EAC43383; Tue, 28 Jan 2020 22:00:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 914EAC43383 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: iommu@lists.linux-foundation.org Cc: robin.murphy@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Sean Paul , Bjorn Andersson , Sharat Masetty , dri-devel@lists.freedesktop.org, Sam Ravnborg , Fritz Koenig , David Airlie , Wambui Karuga , Joerg Roedel , Allison Randal , AngeloGioacchino Del Regno , Thomas Gleixner , Douglas Anderson , Rob Clark , Greg Kroah-Hartman , Jeffrey Hugo , Wen Yang , Alexios Zavras , Jeykumar Sankaran , Enrico Weigelt , zhengbin , linux-kernel@vger.kernel.org, Brian Masney , Drew Davenport , Georgi Djakov , freedreno@lists.freedesktop.org, Ben Dooks , Daniel Vetter Subject: [PATCH v5 0/5] iommu/arm-smmu: Split pagetable support for arm-smmu-v2 Date: Tue, 28 Jan 2020 15:00:14 -0700 Message-Id: <1580248819-12644-1-git-send-email-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This is another iteration for the split pagetable support based on the suggestions from Robin and Will [1]. Background: In order to support per-context pagetables the GPU needs to enable split tables so that we can store global buffers in the TTBR1 space leaving the GPU free to program the TTBR0 register with the address of a context specific pagetable. If the DOMAIN_ATTR_SPLIT_TABLES attribute is set on the domain before attaching, the context bank assigned to the domain will be programmed to allow translations in the TTBR1 space. Translations in the TTBR0 region will be disallowed because, as Robin pointe out, having a un-programmed TTBR0 register is dangerous. The driver can determine if TTBR1 was successfully programmed by querying DOMAIN_ATTR_SPLIT_TABLES after attaching. The domain geometry will also be updated to reflect the virtual address space for the TTBR1 range. Upcoming changes will allow auxiliary domains to be attached to the device which will enable and program TTBR0. This patchset is based on top of linux-next-20200127. Change log: v4: Only program TTBR1 when split pagetables are requested. TTBR0 will be enabled later when an auxiliary domain is attached v3: Remove the implementation specific and make split pagetable support part of the generic configuration [1] https://lists.linuxfoundation.org/pipermail/iommu/2020-January/041373.html Jordan Crouse (5): iommu: Add DOMAIN_ATTR_SPLIT_TABLES iommu/arm-smmu: Add support for TTBR1 drm/msm: Attach the IOMMU device during initialization drm/msm: Refactor address space initialization drm/msm/a6xx: Support split pagetables drivers/gpu/drm/msm/adreno/a2xx_gpu.c | 16 ++++++++++ drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 1 + drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 1 + drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 1 + drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 51 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/adreno/adreno_gpu.c | 23 ++++++++++---- drivers/gpu/drm/msm/adreno/adreno_gpu.h | 8 +++++ drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 18 ++++------- drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 18 +++++------ drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c | 4 --- drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 18 +++++------ drivers/gpu/drm/msm/msm_drv.h | 8 ++--- drivers/gpu/drm/msm/msm_gem_vma.c | 36 ++++------------------ drivers/gpu/drm/msm/msm_gpu.c | 49 ++---------------------------- drivers/gpu/drm/msm/msm_gpu.h | 4 +-- drivers/gpu/drm/msm/msm_gpummu.c | 6 ---- drivers/gpu/drm/msm/msm_iommu.c | 18 ++++++----- drivers/gpu/drm/msm/msm_mmu.h | 1 - drivers/iommu/arm-smmu.c | 48 +++++++++++++++++++++++++----- drivers/iommu/arm-smmu.h | 22 ++++++++++---- include/linux/iommu.h | 2 ++ 21 files changed, 198 insertions(+), 155 deletions(-)