From patchwork Mon Aug 3 19:35:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jordan Crouse X-Patchwork-Id: 11698663 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 DACB6912 for ; Mon, 3 Aug 2020 19:36:22 +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 340AF207DF for ; Mon, 3 Aug 2020 19:36:23 +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="cwidlO66" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 340AF207DF 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 A19EA6E0C2; Mon, 3 Aug 2020 19:36:21 +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 390086E2ED for ; Mon, 3 Aug 2020 19:36:21 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1596483381; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=wYFdk4sZjkkv1anpMyFTRw+xKujsLrZ6WLap5ZC3G3k=; b=cwidlO66cfayOSEB4xt4bT0MZAI/wr7KFYodsNTUBtVx5S4zXDqiZNHJkRce1PcpldzDotc0 zoLkUIHxebXe1PkANh8pcLbO9R/KUFEq7uXij8o0gsojiAR1Q1JEq4OU3meSFYJjU3LGI7m8 jf3mjCYtTNvskNjawu8KYfdaHm8= 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-n03.prod.us-east-1.postgun.com with SMTP id 5f28673476a940cda8ee91bf (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 03 Aug 2020 19:36:20 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 38C72C4344E; Mon, 3 Aug 2020 19:36:17 +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 E0C07C433B6; Mon, 3 Aug 2020 19:36:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E0C07C433B6 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 v11 08/12] drm/msm: Set the global virtual address range from the IOMMU domain Date: Mon, 3 Aug 2020 13:35:43 -0600 Message-Id: <20200803193547.305660-9-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200803193547.305660-1-jcrouse@codeaurora.org> References: <20200803193547.305660-1-jcrouse@codeaurora.org> MIME-Version: 1.0 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 , Jonathan Marek , David Airlie , freedreno@lists.freedesktop.org, Robin Murphy , dri-devel@lists.freedesktop.org, Bjorn Andersson , iommu@lists.linux-foundation.org, Will Deacon , linux-kernel@vger.kernel.org, Brian Masney Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Use the aperture settings from the IOMMU domain to set up the virtual address range for the GPU. This allows us to transparently deal with IOMMU side features (like split pagetables). Signed-off-by: Jordan Crouse --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 13 +++++++++++-- drivers/gpu/drm/msm/msm_iommu.c | 7 +++++++ 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index b38a8126541a..f9e3badf2fca 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -192,9 +192,18 @@ adreno_iommu_create_address_space(struct msm_gpu *gpu, struct iommu_domain *iommu = iommu_domain_alloc(&platform_bus_type); struct msm_mmu *mmu = msm_iommu_new(&pdev->dev, iommu); struct msm_gem_address_space *aspace; + u64 start, size; - aspace = msm_gem_address_space_create(mmu, "gpu", SZ_16M, - 0xffffffff - SZ_16M); + /* + * Use the aperture start or SZ_16M, whichever is greater. This will + * ensure that we align with the allocated pagetable range while still + * allowing room in the lower 32 bits for GMEM and whatnot + */ + start = max_t(u64, SZ_16M, iommu->geometry.aperture_start); + size = iommu->geometry.aperture_end - start + 1; + + aspace = msm_gem_address_space_create(mmu, "gpu", + start & GENMASK(48, 0), size); if (IS_ERR(aspace) && !IS_ERR(mmu)) mmu->funcs->destroy(mmu); diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c index 3a381a9674c9..1b6635504069 100644 --- a/drivers/gpu/drm/msm/msm_iommu.c +++ b/drivers/gpu/drm/msm/msm_iommu.c @@ -36,6 +36,10 @@ static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova, struct msm_iommu *iommu = to_msm_iommu(mmu); size_t ret; + /* The arm-smmu driver expects the addresses to be sign extended */ + if (iova & BIT_ULL(48)) + iova |= GENMASK_ULL(63, 49); + ret = iommu_map_sg(iommu->domain, iova, sgt->sgl, sgt->nents, prot); WARN_ON(!ret); @@ -46,6 +50,9 @@ static int msm_iommu_unmap(struct msm_mmu *mmu, uint64_t iova, size_t len) { struct msm_iommu *iommu = to_msm_iommu(mmu); + if (iova & BIT_ULL(48)) + iova |= GENMASK_ULL(63, 49); + iommu_unmap(iommu->domain, iova, len); return 0;