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Fri, 26 Jun 2020 20:04:23 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 5E85FC43457; 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-Spam-Note: CRM114 invocation failed X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [104.130.122.29 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [104.130.122.29 listed in wl.mailspike.net] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders 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: Sean Paul , Rob Clark , 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, Eric Anholt , iommu@lists.linux-foundation.org, John Stultz , linux-arm-kernel@lists.infradead.org, Daniel Vetter , freedreno@lists.freedesktop.org, Sharat Masetty , Yong Wu , Emil Velikov MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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 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(-)