From patchwork Tue Nov 17 14:30:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sai Prakash Ranjan X-Patchwork-Id: 325928 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=-6.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, 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 D4714C63697 for ; Tue, 17 Nov 2020 14:31:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 778172223D for ; Tue, 17 Nov 2020 14:31:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="DwNIO4+W" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729680AbgKQObr (ORCPT ); Tue, 17 Nov 2020 09:31:47 -0500 Received: from z5.mailgun.us ([104.130.96.5]:39703 "EHLO z5.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729335AbgKQObr (ORCPT ); Tue, 17 Nov 2020 09:31:47 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1605623506; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=zRoDPun0Hsjef4OG9w+Y5KQ464Gj4PbP2e/Lna4lmPQ=; b=DwNIO4+W9rXCheo0XA+0wa9XU71Wk6Nqs3U1WUhf9EQ2eca4YANGVOFLAEaa6SDGo2XQI144 Y6ApU5mT+XWCJUO1pa6iVZ09MoNlt/3/HonrTKzDjAXsNQMNLJNTpO6ZBFwoUdBKVYpxMWIC w8u5gKswDPD1n5Am5MaYpDSkqxw= X-Mailgun-Sending-Ip: 104.130.96.5 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 smtp-out-n03.prod.us-east-1.postgun.com with SMTP id 5fb3deae07fe4e8a182418ae (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 17 Nov 2020 14:31:10 GMT Sender: saiprakash.ranjan=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C91AFC43465; Tue, 17 Nov 2020 14:31:09 +0000 (UTC) Received: from blr-ubuntu-253.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: saiprakash.ranjan) by smtp.codeaurora.org (Postfix) with ESMTPSA id 289D5C433C6; Tue, 17 Nov 2020 14:31:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 289D5C433C6 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=fail smtp.mailfrom=saiprakash.ranjan@codeaurora.org From: Sai Prakash Ranjan To: Will Deacon , Robin Murphy , Joerg Roedel , Jordan Crouse , Rob Clark Cc: Akhil P Oommen , freedreno@lists.freedesktop.org, "Kristian H . Kristensen" , dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Sai Prakash Ranjan Subject: [PATCHv8 0/8] System Cache support for GPU and required SMMU support Date: Tue, 17 Nov 2020 20:00:39 +0530 Message-Id: X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Some hardware variants contain a system cache or the last level cache(llc). This cache is typically a large block which is shared by multiple clients on the SOC. GPU uses the system cache to cache both the GPU data buffers(like textures) as well the SMMU pagetables. This helps with improved render performance as well as lower power consumption by reducing the bus traffic to the system memory. The system cache architecture allows the cache to be split into slices which then be used by multiple SOC clients. This patch series is an effort to enable and use two of those slices preallocated for the GPU, one for the GPU data buffers and another for the GPU SMMU hardware pagetables. Patch 1 - Patch 6 adds system cache support in SMMU and GPU driver. Patch 7 and 8 are minor cleanups for arm-smmu impl. Changes in v8: * Introduce a generic domain attribute for pagetable config (Will) * Rename quirk to more generic IO_PGTABLE_QUIRK_ARM_OUTER_WBWA (Will) * Move non-strict mode to use new struct domain_attr_io_pgtbl_config (Will) Changes in v7: * Squash Jordan's patch to support MMU500 targets * Rebase on top of for-joerg/arm-smmu/updates and Jordan's short series for adreno-smmu impl Changes in v6: * Move table to arm-smmu-qcom (Robin) Changes in v5: * Drop cleanup of blank lines since it was intentional (Robin) * Rebase again on top of msm-next-pgtables as it moves pretty fast Changes in v4: * Drop IOMMU_SYS_CACHE prot flag * Rebase on top of https://gitlab.freedesktop.org/drm/msm/-/tree/msm-next-pgtables Changes in v3: * Fix domain attribute setting to before iommu_attach_device() * Fix few code style and checkpatch warnings * Rebase on top of Jordan's latest split pagetables and per-instance pagetables support Changes in v2: * Addressed review comments and rebased on top of Jordan's split pagetables series Jordan Crouse (1): drm/msm/a6xx: Add support for using system cache on MMU500 based targets Sai Prakash Ranjan (5): iommu/io-pgtable-arm: Add support to use system cache iommu/arm-smmu: Add domain attribute for pagetable configuration iommu/arm-smmu: Move non-strict mode to use domain_attr_io_pgtbl_cfg iommu: arm-smmu-impl: Use table to list QCOM implementations iommu: arm-smmu-impl: Add a space before open parenthesis Sharat Masetty (2): drm/msm: rearrange the gpu_rmw() function drm/msm/a6xx: Add support for using system cache(LLC) drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 109 +++++++++++++++++++++ drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 5 + drivers/gpu/drm/msm/adreno/adreno_gpu.c | 17 ++++ drivers/gpu/drm/msm/msm_drv.c | 8 ++ drivers/gpu/drm/msm/msm_drv.h | 1 + drivers/gpu/drm/msm/msm_gpu.h | 5 +- drivers/iommu/arm/arm-smmu/arm-smmu-impl.c | 11 +-- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 21 +++- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 +++++- drivers/iommu/arm/arm-smmu/arm-smmu.h | 3 +- drivers/iommu/io-pgtable-arm.c | 10 +- include/linux/io-pgtable.h | 8 ++ include/linux/iommu.h | 1 + 13 files changed, 203 insertions(+), 26 deletions(-) base-commit: a29bbb0861f487a5e144dc997a9f71a36c7a2404