From patchwork Sat Sep 26 13:00:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 11801375 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 E29F0112C for ; Sat, 26 Sep 2020 13:00:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C6ABD22204 for ; Sat, 26 Sep 2020 13:00:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="n/LlruLX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728861AbgIZNAc (ORCPT ); Sat, 26 Sep 2020 09:00:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729476AbgIZNAT (ORCPT ); Sat, 26 Sep 2020 09:00:19 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9611EC0613D5; Sat, 26 Sep 2020 06:00:18 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id k15so6819496wrn.10; Sat, 26 Sep 2020 06:00:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=POwNz31ZN3LOQvK8MbPorXqI52RXX9/Ai5jo+kx6R5E=; b=n/LlruLXp5eS3hUv4JVlIQ1RePSbyLXxeXGV+9PARKUxGojZ93WfkBuzL+BjVrKxdU CtbQiP2nnjvnhIZVM+gmIH+oePtSMU6/RNATnAbo4x9/mtvdLD3kmw8sjQl7mUwWdvSN cY7k5e+9GIPJ0M9tyStdj9TVC2TN6K39aZ+56rr5Y+fBU66cuN8+1GNutQzhw7bXAOLT 4cN/soOvcCIf1vhp410SEB27vmGidsDYm4NiVn3IJkaDUv1El+vL0GZhftJXpILrC+2K twtk6ycSorMIjJ3/B38bvdjGeeZtSIPr2NIWh1MhPaXBIu1wUNrHhtUasdldNHtFSEyK iWSA== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=POwNz31ZN3LOQvK8MbPorXqI52RXX9/Ai5jo+kx6R5E=; b=qmIh13PP3R4BxKxcjj6LMAxv63HXfNQGLpTTO/WCcP8qfAcFS1+vk08wDXoAeOHpw7 jTYRwPPDiDwxNFhNyonwWOxTvcQ50/LM8v1UeqN4FdeBTmsMEazOar9uw5d6uHHxhGSV hvOrAYBAbVaMzMYGH9bPk+G38jv1FaJFv5mRUn56BxIyYOXHcBgHU7/ghmaXp7PDfhUK u1rxIOARou4V/vGl2fuXcvh7O21jPECGnpp0ownj8CbrSFDxYxEawDiKXsdAXKrQ3Zw0 YhNbWfnehFDF6XqNGUdm9mIeHbHeW3TXZEjLtpEzHfO1hUqgZkEjJ1BqC8qA+zNbrx6H A3kA== X-Gm-Message-State: AOAM533oBJYNeUKA0k2MasqDrCJ0i6rmGI0qsvN8t+/HPa5h4zvsLnCN nUZ7x7QgRSjdpX9SH2zQNxk= X-Google-Smtp-Source: ABdhPJxKO7cz2KLjIhwJxFhZR3eStWHED3pAB8ByU4QPl9SSq0oDXBVFVySh0V+586xr+M/Jh7mSWg== X-Received: by 2002:adf:e5c8:: with SMTP id a8mr9728962wrn.5.1601125217236; Sat, 26 Sep 2020 06:00:17 -0700 (PDT) Received: from IcarusMOD.eternityproject.eu ([2.237.20.237]) by smtp.gmail.com with ESMTPSA id b11sm6462896wrt.38.2020.09.26.06.00.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Sep 2020 06:00:16 -0700 (PDT) From: kholk11@gmail.com To: will@kernel.org Cc: robin.murphy@arm.com, joro@8bytes.org, bjorn.andersson@linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, kholk11@gmail.com, marijns95@gmail.com, konradybcio@gmail.com, martin.botka1@gmail.com, linux-arm-msm@vger.kernel.org, phone-devel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 8/8] iommu/arm-smmu-qcom: Add stream_mapping_reset detail to QCOM SMMUv2 Date: Sat, 26 Sep 2020 15:00:04 +0200 Message-Id: <20200926130004.13528-9-kholk11@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200926130004.13528-1-kholk11@gmail.com> References: <20200926130004.13528-1-kholk11@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: AngeloGioacchino Del Regno On some Qualcomm SoCs with certain hypervisor configurations, some context banks are hyp-protected and cannot be disabled, nor the relative S2CRs can be set as bypass, or a hyp-fault will be triggered and the system will hang. This is seen on at least Qualcomm SDM630, SDM636 and SDM660. Signed-off-by: AngeloGioacchino Del Regno --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index b18e70bddf29..364908cc2adf 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -85,6 +85,18 @@ static int qcom_smmuv2_cfg_probe(struct arm_smmu_device *smmu) return 0; } +static void qcom_smmuv2_stream_mapping_reset(struct arm_smmu_device *smmu) +{ + /* + * Broken firmware quirk: + * On some Qualcomm SoCs with certain hypervisor configurations, + * some context banks are hyp-protected and cannot be disabled, + * nor the relative S2CRs can be set as bypass, or a hyp-fault + * will be triggered and the system will hang. + */ + return; +} + static void qcom_smmuv2_test_smr_masks(struct arm_smmu_device *smmu) { /* @@ -99,6 +111,7 @@ static void qcom_smmuv2_test_smr_masks(struct arm_smmu_device *smmu) static const struct arm_smmu_impl qcom_smmuv2_impl = { .cfg_probe = qcom_smmuv2_cfg_probe, + .stream_mapping_reset = qcom_smmuv2_stream_mapping_reset, .test_smr_masks = qcom_smmuv2_test_smr_masks, };