From patchwork Sat Oct 17 04:39:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 11842583 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 323391752 for ; Sat, 17 Oct 2020 05:54:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1593220720 for ; Sat, 17 Oct 2020 05:54:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="HVEf5OkL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2436678AbgJQFyr (ORCPT ); Sat, 17 Oct 2020 01:54:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2436779AbgJQFyo (ORCPT ); Sat, 17 Oct 2020 01:54:44 -0400 Received: from mail-oo1-xc41.google.com (mail-oo1-xc41.google.com [IPv6:2607:f8b0:4864:20::c41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D7FDC05BD23 for ; Fri, 16 Oct 2020 21:38:27 -0700 (PDT) Received: by mail-oo1-xc41.google.com with SMTP id o184so1139413ooo.8 for ; Fri, 16 Oct 2020 21:38:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=jVnRyUolr4BwE4IUvjoP1hOl3uNRFzt0UHkql5BKxNw=; b=HVEf5OkLA30lu7upPvgEAndNVgt9ByZLqZTN/3I7N0TGKpMYQPhEsQYecMcOoebQyM bKuU+MbxXCtvME9FcPcSHZV4Yt7sBLvFW3+q5Jq2f96uBFzyvZuIspFmN4HKnzxjwZlp e848Pu0nxdhikSe2csuI84B7/P23eaagd0nvZcVINR5cG1eNf4aD/05JzmpkjI1hR5cT LxQbczsWlIIm5rviRJQiPAx1r5Ay/DrGNjtfo1dq2NyBymD6oxyeKP2fEszZJTvZU/0k YnxCii5fSMpJN8VG+vsEW4NereiOoihx+FNYJgAEi+bRBaWZjELqL9Ie9l51k9C3Casa KdLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=jVnRyUolr4BwE4IUvjoP1hOl3uNRFzt0UHkql5BKxNw=; b=k2xqDl+prqgXY9g1iB9JXoG47zfmMRUHH86DLtAkJhMdSCeX3ymJx/GDmpuMcXvasd G4IWspqcYh5YBJhXDT5vmroKcpP5hPkVLSr7G3lmEQKL6qy+lQeacZV8NMZsfQIBWeWB b4zFLhqWgI5oSYF84eqBc4LY8lOYMHZkj375Tn2tRnT8bYW042iMY2TDFRjTLp2BL4AU q2sH7JUkaKYe/eRW35DpwVOuzNsHPsHYUS8AsbasyOhoJJeNBA+ONY3K+vSUY9YLdwU1 e+ge3Pe7BP5dBaJ1QD6/tbjjTrEce+kJkOtY2AGoxZNhIi8mF59vH4tvIifOiMvdgUlQ CRXA== X-Gm-Message-State: AOAM531VeUcGk5wTpI7L8JXnUplIn0J2FCEyeYyAwgF5IcTARrtW+xAW 0Jm6rZk0b1XysYKCoDtq9IL5+w== X-Google-Smtp-Source: ABdhPJwK8Wa0Cux+ocIv9R1uy4sNW7NQ7SRmBhK1inNU0eLZjbU5Tvm0NB7XDk+asw3bkJ7gicxBHg== X-Received: by 2002:a4a:d654:: with SMTP id y20mr5047456oos.90.1602909506462; Fri, 16 Oct 2020 21:38:26 -0700 (PDT) Received: from localhost.localdomain (104-57-184-186.lightspeed.austtx.sbcglobal.net. [104.57.184.186]) by smtp.gmail.com with ESMTPSA id t65sm1640038oib.50.2020.10.16.21.38.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Oct 2020 21:38:25 -0700 (PDT) From: Bjorn Andersson To: Will Deacon , Robin Murphy , Joerg Roedel , Sai Prakash Ranjan , Jordan Crouse , Thierry Reding , Rob Clark Cc: linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v4 0/3] iommu/arm-smmu-qcom: Support maintaining bootloader mappings Date: Fri, 16 Oct 2020 21:39:04 -0700 Message-Id: <20201017043907.2656013-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This is the fourth attempt of inheriting the stream mapping for the framebuffer on many Qualcomm platforms, in order to not hit catastrophic faults during arm-smmu initialization. The new approach does, based on Robin's suggestion, take a much more direct approach with the allocation of a context bank for bypass emulation and use of this context bank pretty much isolated to the Qualcomm specific implementation. As before the patchset has been tested to boot DB845c (with splash screen) and Lenovo Yoga C630 (with EFI framebuffer). Bjorn Andersson (3): iommu/arm-smmu: Allow implementation specific write_s2cr iommu/arm-smmu-qcom: Read back stream mappings iommu/arm-smmu-qcom: Implement S2CR quirk drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 92 ++++++++++++++++++++++ drivers/iommu/arm/arm-smmu/arm-smmu.c | 22 ++++-- drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 + 3 files changed, 107 insertions(+), 8 deletions(-)