From patchwork Thu Apr 9 23:33:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jordan Crouse X-Patchwork-Id: 189664 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, URIBL_BLOCKED, 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 F0A5AC2BA19 for ; Thu, 9 Apr 2020 23:34:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BF7AB2074F for ; Thu, 9 Apr 2020 23:34:03 +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="eNbe1pDp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727078AbgDIXeC (ORCPT ); Thu, 9 Apr 2020 19:34:02 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:63896 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727072AbgDIXeC (ORCPT ); Thu, 9 Apr 2020 19:34:02 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1586475242; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=HLu3LXKVdwRi2myzF6VISXReouVgdhBst/ZOPq5Z52I=; b=eNbe1pDptanY0FYy2/b1d0ZtgZwGVTyMxjjOXcsWvwgdFtq9JOmQyjwHoh70UDkRxWlr8GMz at7+QlwcFTy343vZ15nTWoGAlItWXXxEEogiHjFnoCNUU5q7og4q4IhZ8UUsLwPMMMblkxT2 kBXkb1zr0JwXotyKqBV4OLZXCJQ= X-Mailgun-Sending-Ip: 104.130.122.26 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 5e8fb0ea.7f4d407926f8-smtp-out-n05; Thu, 09 Apr 2020 23:34:02 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 93CC8C38557; Thu, 9 Apr 2020 23:33:58 +0000 (UTC) Received: from localhost.localdomain (c-71-237-101-98.hsd1.co.comcast.net [71.237.101.98]) (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 A0FF5C433D2; Thu, 9 Apr 2020 23:33:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org A0FF5C433D2 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: linux-arm-msm@vger.kernel.org, robin.murphy@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, Abhinav Kumar , Akhil P Oommen , Alexios Zavras , Allison Randal , AngeloGioacchino Del Regno , Ben Dooks , Bjorn Andersson , Brian Masney , Daniel Vetter , David Airlie , Drew Davenport , Enrico Weigelt , Fabio Estevam , Georgi Djakov , Greg Kroah-Hartman , Jeffrey Hugo , Joerg Roedel , Joerg Roedel , Rob Clark , Sam Ravnborg , Sean Paul , Sharat Masetty , Thomas Gleixner , Thomas Zimmermann , Wambui Karuga , Wen Yang , dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, tongtiangen , zhengbin Subject: [PATCH v6 0/5] iommu/arm-smmu: Split pagetable support for arm-smmu-v2 Date: Thu, 9 Apr 2020 17:33:45 -0600 Message-Id: <20200409233350.6343-1-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.17.1 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-20200409 Change log: v6: Cleanups for the arm-smmu TTBR1 patch from Will Deacon 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 | 24 ++++++++--- include/linux/iommu.h | 2 + 21 files changed, 200 insertions(+), 155 deletions(-)