From patchwork Wed Dec 20 06:02:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 756555 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2D5D13AC4; Wed, 20 Dec 2023 06:03:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="cFZW3QBZ" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK452vR020735; Wed, 20 Dec 2023 06:02:47 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=cF2AFQd/o4DUV3N3/91P lROqR7ALzxo9WQC1QyEvWAI=; b=cFZW3QBZ7AVrpWeJCEP66jNBdwrsib2onVdF iMtZwqhhYhSMefUA088AIdjJW+dq3rPYZ1hWlKvgaBwWLbRpfHPVd/VmeMnzY9ps 4QcmxKxHb3oTa70O6DBzxuI8psngsmWO1Gl8+o8kyY/+KHsL5QW2n+VRvEvCT8T6 uygrPOa4qIIO95o7dpXpE7pgUNBO7tzztCACTj2uh41flh/nJWGKc7OSkzMrrxSx Di7WJD+/3TiW4+6hETSzQDd18Sz1tuGyZMGhHevz8XvGsz+aDinPIRAamCM/cvpM ZovcNnHxHPPTWK51gqhw7jDzks4N+Ct3PTgkUgAJhiEjO+E4aA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v3fed9b24-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:47 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62kFJ027879 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:46 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:45 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 1/9] dt-bindings: iommu: Add Translation Buffer Unit bindings Date: Tue, 19 Dec 2023 22:02:28 -0800 Message-ID: <20231220060236.18600-2-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: X3WyVrKETlAt236d3zOk-UEpn75QNLfH X-Proofpoint-ORIG-GUID: X3WyVrKETlAt236d3zOk-UEpn75QNLfH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 clxscore=1015 mlxscore=0 priorityscore=1501 bulkscore=0 phishscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 The "apps_smmu" on the Qualcomm sdm845 platform is an implementation of the SMMU-500, that consists of a single TCU (Translation Control Unit) and multiple TBUs (Translation Buffer Units). The TCU is already being described in the generic SMMU DT schema. Add bindings for the TBUs to describe their properties and resources that needs to be managed in order to operate them. In this DT schema, the TBUs are modelled as child devices of the TCU and each of them is described with it's register space, clocks, power domains, interconnects etc. Signed-off-by: Georgi Djakov --- .../devicetree/bindings/iommu/arm,smmu.yaml | 31 ++++++++ .../bindings/iommu/qcom,qsmmuv500-tbu.yaml | 77 +++++++++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml index a4042ae24770..a610af2c7e5e 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -235,6 +235,27 @@ properties: enabled for any given device. $ref: /schemas/types.yaml#/definitions/phandle + '#address-cells': + enum: [ 1, 2 ] + + '#size-cells': + enum: [ 1, 2 ] + + ranges: true + +patternProperties: + "^tbu@[0-9a-f]+": + description: The TBU child node(s) + type: object + + properties: + stream-id-range: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: Stream ID range (address and size) that is assigned by the TBU + items: + minItems: 2 + maxItems: 2 + required: - compatible - reg @@ -312,6 +333,16 @@ allOf: through the TCU's programming interface. - description: bus clock required for the smmu ptw + - if: + properties: + compatible: + contains: + const: qcom,sdm845-smmu-500 + then: + patternProperties: + "^tbu@[0-9a-f]+": + $ref: qcom,qsmmuv500-tbu.yaml + - if: properties: compatible: diff --git a/Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml b/Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml new file mode 100644 index 000000000000..c4f148ae5f38 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/qcom,qsmmuv500-tbu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm TBU (Translation Buffer Unit) + +maintainers: + - Georgi Djakov + +description: + The Qualcomm SMMU500 implementation consists of TCU and TBU. The TBU contains + a Translation Lookaside Buffer (TLB) that caches page tables. TBUs provides + debug features to trace and trigger debug transactions. There are multiple TBU + instances distributes with each client core. + +properties: + + compatible: + const: qcom,qsmmuv500-tbu + + reg: + items: + - description: Address and size of the TBU's register space. + + clocks: + maxItems: 1 + + interconnects: + maxItems: 1 + + power-domains: + maxItems: 1 + + stream-id-range: + $ref: "arm,smmu.yaml#/patternProperties/^tbu@[0-9a-f]+/properties/stream-id-range" + +required: + - compatible + - reg + - stream-id-range + +additionalProperties: false + +examples: + - | + #include + #include + #include + #include + #include + #include + + apps_smmu: iommu@15000000 { + compatible = "qcom,sdm845-smmu-500", "arm,mmu-500"; + reg = <0x15000000 0x80000>; + ranges = <0 0 0 0 0xffffffff>; + #iommu-cells = <2>; + #global-interrupts = <1>; + interrupts = , + ; + #address-cells = <2>; + #size-cells = <2>; + + anoc_1_pcie_tbu: tbu@150e1000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150e1000 0x0 0x1000>; + clocks = <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>; + interconnects = <&system_noc MASTER_GNOC_SNOC QCOM_ICC_TAG_ACTIVE_ONLY + &config_noc SLAVE_IMEM_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_AGGRE_NOC_MMU_PCIE_TBU_GDSC>; + stream-id-range = <0x1c00 0x400>; + }; + }; + +... From patchwork Wed Dec 20 06:02:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 757175 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 42EA110A36; Wed, 20 Dec 2023 06:03:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="B3rdraeO" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK61KHh019634; Wed, 20 Dec 2023 06:02:48 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=JrVRyZ96yUrBQQjgIufD AqTRtO5j55EQwDj2xFPFFbM=; b=B3rdraeOmddSFxlwGKM4YQleLbKUBC/VB+N3 cSs6rx54H76BHCJ93Rw7R0JEN9AQOiyr7eknvZS75gSHODituF0aYpkXb6BJJ9z6 158vQwgMeatKzTizXHEijazKFu2Z2DKteeOJArb6S3lEkw+k38luLNBRJzFcG90i nf3pyJ41+EgRQSzV1JxXiNuotHpdC4xQ6nxI9uz4/Lgnnq/GRCuBxqmXUDU44DaX 1T0Hzr1TrCL5/Ox/V7+6vgGbyYW/CPhYW0TNjSwY2oN9KrGPi6Tkie7+3z60CwTd x+eqycuII8RVp0x8hCi6Z93HC4SPGjfW3BG3IUq4zw56RN4lZA== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v3tmm0040-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:47 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62kFM023280 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:47 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:46 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 2/9] iommu/arm-smmu-qcom: Add support for TBUs Date: Tue, 19 Dec 2023 22:02:29 -0800 Message-ID: <20231220060236.18600-3-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 0yXttM7_80DqHKU_wIo5zAGw4ZibtNZn X-Proofpoint-ORIG-GUID: 0yXttM7_80DqHKU_wIo5zAGw4ZibtNZn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 impostorscore=0 mlxscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=999 adultscore=0 malwarescore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 The ARM MMU-500 implements a Translation Buffer Unit (TBU) for each connected master besides a single TCU which controls and manages the address translations. Allow the Qualcomm SMMU driver to probe for any TBU devices that can provide additional debug features like triggering transactions, logging outstanding transactions, snapshot capture etc. The primary use-case would be to get information from a TBU and print it during a context fault. Signed-off-by: Georgi Djakov --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 9 +++++++++ drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h | 4 +++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 8b04ece00420..581401d6c18a 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -1,12 +1,14 @@ // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2019, The Linux Foundation. All rights reserved. + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved */ #include #include #include #include +#include #include #include "arm-smmu.h" @@ -446,6 +448,7 @@ static struct arm_smmu_device *qcom_smmu_create(struct arm_smmu_device *smmu, const struct device_node *np = smmu->dev->of_node; const struct arm_smmu_impl *impl; struct qcom_smmu *qsmmu; + int ret; if (!data) return ERR_PTR(-EINVAL); @@ -469,6 +472,12 @@ static struct arm_smmu_device *qcom_smmu_create(struct arm_smmu_device *smmu, qsmmu->smmu.impl = impl; qsmmu->cfg = data->cfg; + INIT_LIST_HEAD(&qsmmu->tbu_list); + mutex_init(&qsmmu->tbu_list_lock); + ret = devm_of_platform_populate(smmu->dev); + if (ret) + return ERR_PTR(ret); + return &qsmmu->smmu; } diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h index 593910567b88..2164a9cf3dde 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* - * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved. */ #ifndef _ARM_SMMU_QCOM_H @@ -12,6 +12,8 @@ struct qcom_smmu { bool bypass_quirk; u8 bypass_cbndx; u32 stall_enabled; + struct mutex tbu_list_lock; /* protects tbu_list */ + struct list_head tbu_list; }; enum qcom_smmu_impl_reg_offset { From patchwork Wed Dec 20 06:02:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 756557 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8747713ACD; Wed, 20 Dec 2023 06:03:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="XoV4tDIs" Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK5VKfX006738; Wed, 20 Dec 2023 06:02:48 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=zGwTlMUfygYt9LWbk+Ra HeQtQZxcpxDdKCDjIJVvQgk=; b=XoV4tDIsfwb1QOv/ysy9kC4Dr6nT87dE8T0Z LVATCztbp4EctK03sVx0Ip+HXkF5UfXPTZqDslp11sDgp10IT5w6zoZICAkSetV8 3/sCkp79usdgwpMYkTMA+NWhOaRS0U+u0XnXtmmMdA+ohOvbP91WpzwKJYLQW9KU 6Tm91nClnMyREBn8IVU3x9aigIa6ipUm3Zw2sTdb9v0UIXPL5U0KRUbDoUAkH1gE x/agzsxy+XZ08m3XUji2Uz2tbkiRUsBEClIBIFIoRjmNlnfK6VBQlJ9IHHkL2KyF Uf7NYlMPVGEpsFg2KQVVcJ7g+awSkN1L7GIaI+ij6qwlsJ5zlQ== Received: from nasanppmta04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v3r6rr8fu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:48 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62lkf005135 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:47 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:46 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 3/9] iommu/arm-smmu-qcom-tbu: Add Qualcomm TBU driver Date: Tue, 19 Dec 2023 22:02:30 -0800 Message-ID: <20231220060236.18600-4-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: XtW4Ubg9yoqug6RR4EV8V5dzKXyY3bCi X-Proofpoint-GUID: XtW4Ubg9yoqug6RR4EV8V5dzKXyY3bCi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 mlxscore=0 mlxlogscore=816 clxscore=1015 malwarescore=0 suspectscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 Add a driver for the Qualcomm implementation of the MMU-500 TBU. Operating the TBUs (Translation Buffer Units) from Linux can help with debugging context faults. The TBUs can provide debug features such as running ATOS (Address Translation Operations) to manually trigger address translation of IOVA to physical address in hardware. The driver will control the resources needed by the TBU to allow running ATOS on the TBUs or check for outstanding transactions. Signed-off-by: Georgi Djakov --- drivers/iommu/Kconfig | 8 + drivers/iommu/arm/arm-smmu/Makefile | 1 + .../iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c | 366 ++++++++++++++++++ drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h | 2 + drivers/iommu/arm/arm-smmu/arm-smmu.h | 2 + 5 files changed, 379 insertions(+) create mode 100644 drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 9a29d742617e..314dc5dbe7ea 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -371,6 +371,14 @@ config ARM_SMMU_QCOM When running on a Qualcomm platform that has the custom variant of the ARM SMMU, this needs to be built into the SMMU driver. +config ARM_SMMU_QCOM_TBU + bool "Qualcomm TBU driver" + depends on ARM_SMMU_QCOM + help + The SMMU on Qualcomm platform may include a Translation Buffer + Units (TBUs) for each master. Enabling support for these will + allow operating the TBUs to help debugging context faults. + config ARM_SMMU_QCOM_DEBUG bool "ARM SMMU QCOM implementation defined debug support" depends on ARM_SMMU_QCOM diff --git a/drivers/iommu/arm/arm-smmu/Makefile b/drivers/iommu/arm/arm-smmu/Makefile index 2a5a95e8e3f9..c35ff78fcfd5 100644 --- a/drivers/iommu/arm/arm-smmu/Makefile +++ b/drivers/iommu/arm/arm-smmu/Makefile @@ -3,4 +3,5 @@ obj-$(CONFIG_QCOM_IOMMU) += qcom_iommu.o obj-$(CONFIG_ARM_SMMU) += arm_smmu.o arm_smmu-objs += arm-smmu.o arm-smmu-impl.o arm-smmu-nvidia.o arm_smmu-$(CONFIG_ARM_SMMU_QCOM) += arm-smmu-qcom.o +arm_smmu-$(CONFIG_ARM_SMMU_QCOM_TBU) += arm-smmu-qcom-tbu.o arm_smmu-$(CONFIG_ARM_SMMU_QCOM_DEBUG) += arm-smmu-qcom-debug.o diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c new file mode 100644 index 000000000000..2ff00e06d3bf --- /dev/null +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c @@ -0,0 +1,366 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved + */ + +#include +#include +#include +#include +#include + +#include "arm-smmu.h" +#include "arm-smmu-qcom.h" + +#define TBU_DBG_TIMEOUT_US 100 +#define DEBUG_AXUSER_REG 0x30 +#define DEBUG_AXUSER_CDMID GENMASK_ULL(43, 36) +#define DEBUG_AXUSER_CDMID_VAL 0xff +#define DEBUG_PAR_REG 0x28 +#define DEBUG_PAR_FAULT_VAL BIT(0) +#define DEBUG_PAR_PA GENMASK_ULL(47, 12) +#define DEBUG_SID_HALT_REG 0x0 +#define DEBUG_SID_HALT_VAL BIT(16) +#define DEBUG_SID_HALT_SID GENMASK(9, 0) +#define DEBUG_SR_HALT_ACK_REG 0x20 +#define DEBUG_SR_HALT_ACK_VAL BIT(1) +#define DEBUG_SR_ECATS_RUNNING_VAL BIT(0) +#define DEBUG_TXN_AXCACHE GENMASK(5, 2) +#define DEBUG_TXN_AXPROT GENMASK(8, 6) +#define DEBUG_TXN_AXPROT_PRIV 0x1 +#define DEBUG_TXN_AXPROT_NSEC 0x2 +#define DEBUG_TXN_TRIGG_REG 0x18 +#define DEBUG_TXN_TRIGGER BIT(0) +#define DEBUG_VA_ADDR_REG 0x8 + +struct qsmmuv500_tbu { + struct device *dev; + struct arm_smmu_device *smmu; + u32 sid_range[2]; + struct list_head list; + struct clk *clk; + struct icc_path *path; + void __iomem *base; + spinlock_t halt_lock; /* multiple halt or resume can't execute concurrently */ + int halt_count; +}; + +static DEFINE_SPINLOCK(atos_lock); + +static struct qcom_smmu *to_qcom_smmu(struct arm_smmu_device *smmu) +{ + return container_of(smmu, struct qcom_smmu, smmu); +} + +static struct qsmmuv500_tbu *qsmmuv500_find_tbu(struct qcom_smmu *qsmmu, u32 sid) +{ + struct qsmmuv500_tbu *tbu = NULL; + u32 start, end; + + mutex_lock(&qsmmu->tbu_list_lock); + + list_for_each_entry(tbu, &qsmmu->tbu_list, list) { + start = tbu->sid_range[0]; + end = start + tbu->sid_range[1]; + + if (start <= sid && sid < end) + break; + } + + mutex_unlock(&qsmmu->tbu_list_lock); + + return tbu; +} + +static int qsmmuv500_tbu_halt(struct qsmmuv500_tbu *tbu, struct arm_smmu_domain *smmu_domain) +{ + struct arm_smmu_device *smmu = smmu_domain->smmu; + int ret = 0, idx = smmu_domain->cfg.cbndx; + unsigned long flags; + u32 val, fsr, status; + + spin_lock_irqsave(&tbu->halt_lock, flags); + if (tbu->halt_count) { + tbu->halt_count++; + goto out; + } + + val = readl_relaxed(tbu->base + DEBUG_SID_HALT_REG); + val |= DEBUG_SID_HALT_VAL; + writel_relaxed(val, tbu->base + DEBUG_SID_HALT_REG); + + fsr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSR); + if ((fsr & ARM_SMMU_FSR_FAULT) && (fsr & ARM_SMMU_FSR_SS)) { + u32 sctlr_orig, sctlr; + + /* + * We are in a fault. Our request to halt the bus will not + * complete until transactions in front of us (such as the fault + * itself) have completed. Disable iommu faults and terminate + * any existing transactions. + */ + sctlr_orig = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_SCTLR); + sctlr = sctlr_orig & ~(ARM_SMMU_SCTLR_CFCFG | ARM_SMMU_SCTLR_CFIE); + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_SCTLR, sctlr); + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_FSR, fsr); + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_RESUME, ARM_SMMU_RESUME_TERMINATE); + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_SCTLR, sctlr_orig); + } + + if (readl_poll_timeout_atomic(tbu->base + DEBUG_SR_HALT_ACK_REG, status, + (status & DEBUG_SR_HALT_ACK_VAL), + 0, TBU_DBG_TIMEOUT_US)) { + dev_err(tbu->dev, "Timeout while trying to halt TBU!\n"); + ret = -ETIMEDOUT; + + val = readl_relaxed(tbu->base + DEBUG_SID_HALT_REG); + val &= ~DEBUG_SID_HALT_VAL; + writel_relaxed(val, tbu->base + DEBUG_SID_HALT_REG); + + goto out; + } + + tbu->halt_count = 1; + +out: + spin_unlock_irqrestore(&tbu->halt_lock, flags); + return ret; +} + +static void qsmmuv500_tbu_resume(struct qsmmuv500_tbu *tbu) +{ + unsigned long flags; + u32 val; + + spin_lock_irqsave(&tbu->halt_lock, flags); + if (!tbu->halt_count) { + WARN(1, "%s: halt_count is 0", dev_name(tbu->dev)); + goto out; + } + + if (tbu->halt_count > 1) { + tbu->halt_count--; + goto out; + } + + val = readl_relaxed(tbu->base + DEBUG_SID_HALT_REG); + val &= ~DEBUG_SID_HALT_VAL; + writel_relaxed(val, tbu->base + DEBUG_SID_HALT_REG); + + tbu->halt_count = 0; +out: + spin_unlock_irqrestore(&tbu->halt_lock, flags); +} + +static phys_addr_t qsmmuv500_tbu_trigger_atos(struct arm_smmu_domain *smmu_domain, + struct qsmmuv500_tbu *tbu, dma_addr_t iova, u32 sid) +{ + bool atos_timedout = false; + phys_addr_t phys = 0; + ktime_t timeout; + u64 val; + + /* Set address and stream-id */ + val = readq_relaxed(tbu->base + DEBUG_SID_HALT_REG); + val &= ~DEBUG_SID_HALT_SID; + val |= FIELD_PREP(DEBUG_SID_HALT_SID, sid); + writeq_relaxed(val, tbu->base + DEBUG_SID_HALT_REG); + writeq_relaxed(iova, tbu->base + DEBUG_VA_ADDR_REG); + val = FIELD_PREP(DEBUG_AXUSER_CDMID, DEBUG_AXUSER_CDMID_VAL); + writeq_relaxed(val, tbu->base + DEBUG_AXUSER_REG); + + /* Write-back read and write-allocate */ + val = FIELD_PREP(DEBUG_TXN_AXCACHE, 0xf); + + /* Non-secure access */ + val |= FIELD_PREP(DEBUG_TXN_AXPROT, DEBUG_TXN_AXPROT_NSEC); + + /* Priviledged access */ + val |= FIELD_PREP(DEBUG_TXN_AXPROT, DEBUG_TXN_AXPROT_PRIV); + + val |= DEBUG_TXN_TRIGGER; + writeq_relaxed(val, tbu->base + DEBUG_TXN_TRIGG_REG); + + timeout = ktime_add_us(ktime_get(), TBU_DBG_TIMEOUT_US); + for (;;) { + val = readl_relaxed(tbu->base + DEBUG_SR_HALT_ACK_REG); + if (!(val & DEBUG_SR_ECATS_RUNNING_VAL)) + break; + val = readl_relaxed(tbu->base + DEBUG_PAR_REG); + if (val & DEBUG_PAR_FAULT_VAL) + break; + if (ktime_compare(ktime_get(), timeout) > 0) { + atos_timedout = true; + break; + } + } + + val = readq_relaxed(tbu->base + DEBUG_PAR_REG); + if (val & DEBUG_PAR_FAULT_VAL) + dev_err(tbu->dev, "ATOS generated a fault interrupt! PAR = %llx, SID=0x%x\n", + val, sid); + else if (atos_timedout) + dev_err_ratelimited(tbu->dev, "ATOS translation timed out!\n"); + else + phys = FIELD_GET(DEBUG_PAR_PA, val); + + /* Reset hardware */ + writeq_relaxed(0, tbu->base + DEBUG_TXN_TRIGG_REG); + writeq_relaxed(0, tbu->base + DEBUG_VA_ADDR_REG); + val = readl_relaxed(tbu->base + DEBUG_SID_HALT_REG); + val &= ~DEBUG_SID_HALT_SID; + writel_relaxed(val, tbu->base + DEBUG_SID_HALT_REG); + + return phys; +} + +static phys_addr_t qsmmuv500_iova_to_phys(struct arm_smmu_domain *smmu_domain, + dma_addr_t iova, u32 sid) +{ + struct arm_smmu_device *smmu = smmu_domain->smmu; + struct qcom_smmu *qsmmu = to_qcom_smmu(smmu); + int idx = smmu_domain->cfg.cbndx; + struct qsmmuv500_tbu *tbu; + u32 sctlr_orig, sctlr; + phys_addr_t phys = 0; + unsigned long flags; + int attempt = 0; + int ret; + u64 fsr; + + tbu = qsmmuv500_find_tbu(qsmmu, sid); + if (!tbu) + return 0; + + ret = icc_set_bw(tbu->path, 0, UINT_MAX); + if (ret) + return ret; + + ret = clk_prepare_enable(tbu->clk); + if (ret) + goto disable_icc; + + ret = qsmmuv500_tbu_halt(tbu, smmu_domain); + if (ret) + goto disable_clk; + + /* + * ATOS/ECATS can trigger the fault interrupt, so disable it temporarily + * and check for an interrupt manually. + */ + sctlr_orig = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_SCTLR); + sctlr = sctlr_orig & ~(ARM_SMMU_SCTLR_CFCFG | ARM_SMMU_SCTLR_CFIE); + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_SCTLR, sctlr); + + fsr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSR); + if (fsr & ARM_SMMU_FSR_FAULT) { + /* Clear pending interrupts */ + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_FSR, fsr); + + /* + * TBU halt takes care of resuming any stalled transcation. + * Kept it here for completeness sake. + */ + if (fsr & ARM_SMMU_FSR_SS) + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_RESUME, + ARM_SMMU_RESUME_TERMINATE); + } + + /* Only one concurrent atos operation */ + spin_lock_irqsave(&atos_lock, flags); + + /* + * If the translation fails, attempt the lookup more time." + */ + do { + phys = qsmmuv500_tbu_trigger_atos(smmu_domain, tbu, iova, sid); + + fsr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSR); + if (fsr & ARM_SMMU_FSR_FAULT) { + /* Clear pending interrupts */ + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_FSR, fsr); + + if (fsr & ARM_SMMU_FSR_SS) + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_RESUME, + ARM_SMMU_RESUME_TERMINATE); + } + } while (!phys && attempt++ < 2); + + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_SCTLR, sctlr_orig); + spin_unlock_irqrestore(&atos_lock, flags); + qsmmuv500_tbu_resume(tbu); + + /* Read to complete prior write transcations */ + readl_relaxed(tbu->base + DEBUG_SR_HALT_ACK_REG); + +disable_clk: + clk_disable_unprepare(tbu->clk); +disable_icc: + icc_set_bw(tbu->path, 0, 0); + + return phys; +} + +static int qsmmuv500_tbu_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct arm_smmu_device *smmu; + struct qsmmuv500_tbu *tbu; + struct qcom_smmu *qsmmu; + int ret; + + smmu = dev_get_drvdata(dev->parent); + if (!smmu) + return -EPROBE_DEFER; + + qsmmu = to_qcom_smmu(smmu); + + tbu = devm_kzalloc(dev, sizeof(*tbu), GFP_KERNEL); + if (!tbu) + return -ENOMEM; + + tbu->dev = dev; + INIT_LIST_HEAD(&tbu->list); + spin_lock_init(&tbu->halt_lock); + + tbu->base = devm_of_iomap(dev, np, 0, NULL); + if (IS_ERR(tbu->base)) + return PTR_ERR(tbu->base); + + ret = of_property_read_u32_array(np, "stream-id-range", tbu->sid_range, 2); + if (ret) { + dev_err(dev, "The DT property 'stream-id-range' is mandatory\n"); + return ret; + } + + tbu->clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(tbu->clk)) + return PTR_ERR(tbu->clk); + + tbu->path = devm_of_icc_get(dev, NULL); + if (IS_ERR(tbu->path)) + return PTR_ERR(tbu->path); + + mutex_lock(&qsmmu->tbu_list_lock); + list_add_tail(&tbu->list, &qsmmu->tbu_list); + mutex_unlock(&qsmmu->tbu_list_lock); + + dev_set_drvdata(dev, tbu); + + return 0; +} + +static const struct of_device_id qsmmuv500_tbu_of_match[] = { + { .compatible = "qcom,qsmmuv500-tbu" }, + { } +}; + +static struct platform_driver qsmmuv500_tbu_driver = { + .driver = { + .name = "qsmmuv500-tbu", + .of_match_table = qsmmuv500_tbu_of_match, + }, + .probe = qsmmuv500_tbu_probe, +}; +builtin_platform_driver(qsmmuv500_tbu_driver); diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h index 2164a9cf3dde..1c0cf393d04e 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h @@ -32,6 +32,8 @@ struct qcom_smmu_match_data { const struct arm_smmu_impl *adreno_impl; }; +irqreturn_t qcom_smmu_context_fault(int irq, void *dev); + #ifdef CONFIG_ARM_SMMU_QCOM_DEBUG void qcom_smmu_tlb_sync_debug(struct arm_smmu_device *smmu); #else diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h index d375e910b52c..17f704920190 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h @@ -136,6 +136,7 @@ enum arm_smmu_cbar_type { #define ARM_SMMU_CBAR_VMID GENMASK(7, 0) #define ARM_SMMU_GR1_CBFRSYNRA(n) (0x400 + ((n) << 2)) +#define ARM_SMMU_CBFRSYNRA_SID GENMASK(15, 0) #define ARM_SMMU_GR1_CBA2R(n) (0x800 + ((n) << 2)) #define ARM_SMMU_CBA2R_VMID16 GENMASK(31, 16) @@ -238,6 +239,7 @@ enum arm_smmu_cbar_type { #define ARM_SMMU_CB_ATSR 0x8f0 #define ARM_SMMU_ATSR_ACTIVE BIT(0) +#define ARM_SMMU_RESUME_TERMINATE BIT(0) /* Maximum number of context banks per SMMU */ #define ARM_SMMU_MAX_CBS 128 From patchwork Wed Dec 20 06:02:31 2023 Content-Type: text/plain; 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Tue, 19 Dec 2023 22:02:47 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 4/9] iommu/arm-smmu: Allow using a threaded handler for context interrupts Date: Tue, 19 Dec 2023 22:02:31 -0800 Message-ID: <20231220060236.18600-5-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: bcG8l1si0NAW3U4uxFm5P-cMyTddr-fJ X-Proofpoint-GUID: bcG8l1si0NAW3U4uxFm5P-cMyTddr-fJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=983 suspectscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 phishscore=0 spamscore=0 clxscore=1015 mlxscore=0 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 Threaded IRQ handlers run in a less critical context compared to normal IRQs, so they can perform more complex and time-consuming operations without causing significant delays in other parts of the kernel. During a context fault, it might be needed to do more processing and gather debug information from TBUs in the handler. These operations may sleep, so add an option to use a threaded IRQ handler in these cases. Signed-off-by: Georgi Djakov --- drivers/iommu/arm/arm-smmu/arm-smmu.c | 12 ++++++++++-- drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 + 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 68b6bc5e7c71..82436a454c5e 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -806,8 +806,16 @@ static int arm_smmu_init_domain_context(struct arm_smmu_domain *smmu_domain, else context_fault = arm_smmu_context_fault; - ret = devm_request_irq(smmu->dev, irq, context_fault, IRQF_SHARED, - "arm-smmu-context-fault", smmu_domain); + if (smmu->impl && smmu->impl->context_fault_needs_threaded_irq) + ret = devm_request_threaded_irq(smmu->dev, irq, NULL, + context_fault, + IRQF_ONESHOT | IRQF_SHARED, + "arm-smmu-context-fault", + smmu_domain); + else + ret = devm_request_irq(smmu->dev, irq, context_fault, IRQF_SHARED, + "arm-smmu-context-fault", smmu_domain); + if (ret < 0) { dev_err(smmu->dev, "failed to request context IRQ %d (%u)\n", cfg->irptndx, irq); diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h index 17f704920190..54cb9dfcec76 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h @@ -438,6 +438,7 @@ struct arm_smmu_impl { int (*def_domain_type)(struct device *dev); irqreturn_t (*global_fault)(int irq, void *dev); irqreturn_t (*context_fault)(int irq, void *dev); + bool context_fault_needs_threaded_irq; int (*alloc_context_bank)(struct arm_smmu_domain *smmu_domain, struct arm_smmu_device *smmu, struct device *dev, int start); From patchwork Wed Dec 20 06:02:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 757173 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 22B3A1401F; Wed, 20 Dec 2023 06:03:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="bgAFIdiZ" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK5Krov031499; Wed, 20 Dec 2023 06:02:50 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=WmpbZhkGX40PqZHGp/Y9 ztSsgDlIPG1j1tH+4dlsAuI=; b=bgAFIdiZRZ7EAdLwM3N4PPDOj5Ef749Lvl88 w0RJDGIqRGDGzav0aEEDS1R/WwtSuRQ/pv7UeXWD1rqwLqaIZxtLilg31BwgymEh tsz3qTVOzUb5volYAahHz3m+WANqa9U42uIaARxJ3vaky8WigueqrNzNPUVxnWjl gEM+kp7iz31qkXMxCcxvalureGrf/EHtTt7aXPXmJLgdeGPDUhtaDl2ugJRn0a+s h3Uwe2f3UPFwrbZoNtx8KuWlUy2R8aewsQ1p8AhQtNuUgohQ2kjVF/RDJr6K0J78 dscgIdWJYGO1ZoUc718+HqS0/GmFR/oKZ1XzZ9ocEAwM7dOiEw== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v3fed9b28-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:49 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62msU019947 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:48 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:47 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 5/9] iommu/arm-smmu-qcom: Use a custom context fault handler for sdm845 Date: Tue, 19 Dec 2023 22:02:32 -0800 Message-ID: <20231220060236.18600-6-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: mAYKLm1VkJ2VCv788vmO33Y7jPCIKSt8 X-Proofpoint-ORIG-GUID: mAYKLm1VkJ2VCv788vmO33Y7jPCIKSt8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 clxscore=1015 mlxscore=0 priorityscore=1501 bulkscore=0 phishscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 The sdm845 platform now supports TBUs, so let's get additional debug info from the TBUs when a context fault occurs. Implement a custom context fault handler that does both software + hardware page table walks and TLB Invalidate All. Signed-off-by: Georgi Djakov --- .../iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c | 138 ++++++++++++++++++ drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 4 + 2 files changed, 142 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c index 2ff00e06d3bf..cd70bb67a79a 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c @@ -52,6 +52,11 @@ static struct qcom_smmu *to_qcom_smmu(struct arm_smmu_device *smmu) return container_of(smmu, struct qcom_smmu, smmu); } +static struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) +{ + return container_of(dom, struct arm_smmu_domain, domain); +} + static struct qsmmuv500_tbu *qsmmuv500_find_tbu(struct qcom_smmu *qsmmu, u32 sid) { struct qsmmuv500_tbu *tbu = NULL; @@ -301,6 +306,139 @@ static phys_addr_t qsmmuv500_iova_to_phys(struct arm_smmu_domain *smmu_domain, return phys; } +static phys_addr_t qcom_smmu_iova_to_phys_hard(struct iommu_domain *domain, dma_addr_t iova) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + struct arm_smmu_device *smmu = smmu_domain->smmu; + int idx = smmu_domain->cfg.cbndx; + u32 frsynra; + u16 sid; + + frsynra = arm_smmu_gr1_read(smmu, ARM_SMMU_GR1_CBFRSYNRA(idx)); + sid = FIELD_GET(ARM_SMMU_CBFRSYNRA_SID, frsynra); + + return qsmmuv500_iova_to_phys(smmu_domain, iova, sid); +} + +static phys_addr_t qcom_smmu_verify_fault(struct iommu_domain *domain, dma_addr_t iova, u32 fsr) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + struct io_pgtable *iop = io_pgtable_ops_to_pgtable(smmu_domain->pgtbl_ops); + struct arm_smmu_device *smmu = smmu_domain->smmu; + phys_addr_t phys_post_tlbiall; + phys_addr_t phys; + + phys = qcom_smmu_iova_to_phys_hard(domain, iova); + io_pgtable_tlb_flush_all(iop); + phys_post_tlbiall = qcom_smmu_iova_to_phys_hard(domain, iova); + + if (phys != phys_post_tlbiall) { + dev_err(smmu->dev, + "ATOS results differed across TLBIALL... (before: %pa after: %pa)\n", + &phys, &phys_post_tlbiall); + } + + return (phys == 0 ? phys_post_tlbiall : phys); +} + +irqreturn_t qcom_smmu_context_fault(int irq, void *dev) +{ + struct iommu_domain *domain = dev; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + struct io_pgtable_ops *ops = smmu_domain->pgtbl_ops; + struct arm_smmu_device *smmu = smmu_domain->smmu; + u32 fsr, fsynr, cbfrsynra, resume = 0; + int idx = smmu_domain->cfg.cbndx; + phys_addr_t phys_soft; + unsigned long iova; + int ret, tmp; + + static DEFINE_RATELIMIT_STATE(_rs, + DEFAULT_RATELIMIT_INTERVAL, + DEFAULT_RATELIMIT_BURST); + + fsr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSR); + if (!(fsr & ARM_SMMU_FSR_FAULT)) + return IRQ_NONE; + + fsynr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSYNR0); + iova = arm_smmu_cb_readq(smmu, idx, ARM_SMMU_CB_FAR); + cbfrsynra = arm_smmu_gr1_read(smmu, ARM_SMMU_GR1_CBFRSYNRA(idx)); + + phys_soft = ops->iova_to_phys(ops, iova); + + tmp = report_iommu_fault(domain, NULL, iova, + fsynr & ARM_SMMU_FSYNR0_WNR ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ); + if (!tmp || tmp == -EBUSY) { + dev_dbg(smmu->dev, + "Context fault handled by client: iova=0x%08lx, fsr=0x%x, fsynr=0x%x, cb=%d\n", + iova, fsr, fsynr, idx); + dev_dbg(smmu->dev, "soft iova-to-phys=%pa\n", &phys_soft); + ret = IRQ_HANDLED; + resume = ARM_SMMU_RESUME_TERMINATE; + } else { + phys_addr_t phys_atos = qcom_smmu_verify_fault(domain, iova, fsr); + + if (__ratelimit(&_rs)) { + dev_err(smmu->dev, + "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cbfrsynra=0x%x, cb=%d\n", + fsr, iova, fsynr, cbfrsynra, idx); + dev_err(smmu->dev, + "FSR = %08x [%s%s%s%s%s%s%s%s%s], SID=0x%x\n", + fsr, + (fsr & 0x02) ? "TF " : "", + (fsr & 0x04) ? "AFF " : "", + (fsr & 0x08) ? "PF " : "", + (fsr & 0x10) ? "EF " : "", + (fsr & 0x20) ? "TLBMCF " : "", + (fsr & 0x40) ? "TLBLKF " : "", + (fsr & 0x80) ? "MHF " : "", + (fsr & 0x40000000) ? "SS " : "", + (fsr & 0x80000000) ? "MULTI " : "", + cbfrsynra); + + dev_err(smmu->dev, + "soft iova-to-phys=%pa\n", &phys_soft); + if (!phys_soft) + dev_err(smmu->dev, + "SOFTWARE TABLE WALK FAILED! Looks like %s accessed an unmapped address!\n", + dev_name(smmu->dev)); + if (phys_atos) + dev_err(smmu->dev, "hard iova-to-phys (ATOS)=%pa\n", + &phys_atos); + else + dev_err(smmu->dev, "hard iova-to-phys (ATOS) failed\n"); + } + ret = IRQ_NONE; + resume = ARM_SMMU_RESUME_TERMINATE; + } + + /* + * If the client returns -EBUSY, do not clear FSR and do not RESUME + * if stalled. This is required to keep the IOMMU client stalled on + * the outstanding fault. This gives the client a chance to take any + * debug action and then terminate the stalled transaction. + * So, the sequence in case of stall on fault should be: + * 1) Do not clear FSR or write to RESUME here + * 2) Client takes any debug action + * 3) Client terminates the stalled transaction and resumes the IOMMU + * 4) Client clears FSR. The FSR should only be cleared after 3) and + * not before so that the fault remains outstanding. This ensures + * SCTLR.HUPCF has the desired effect if subsequent transactions also + * need to be terminated. + */ + if (tmp != -EBUSY) { + /* Clear the faulting FSR */ + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_FSR, fsr); + + /* Retry or terminate any stalled transactions */ + if (fsr & ARM_SMMU_FSR_SS) + arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_RESUME, resume); + } + + return ret; +} + static int qsmmuv500_tbu_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 581401d6c18a..6b41a0214db1 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -423,6 +423,10 @@ static const struct arm_smmu_impl sdm845_smmu_500_impl = { .reset = qcom_sdm845_smmu500_reset, .write_s2cr = qcom_smmu_write_s2cr, .tlb_sync = qcom_smmu_tlb_sync, +#ifdef CONFIG_ARM_SMMU_QCOM_TBU + .context_fault = qcom_smmu_context_fault, + .context_fault_needs_threaded_irq = true, +#endif }; static const struct arm_smmu_impl qcom_adreno_smmu_v2_impl = { From patchwork Wed Dec 20 06:02:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 756556 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D436134C9; Wed, 20 Dec 2023 06:03:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="D5OLFjX/" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK62H9V020939; Wed, 20 Dec 2023 06:02:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=9h0dj9cr730JabEIK4xh 4FOCZU8EWVaL3ohZs/bE0iU=; b=D5OLFjX/fEOGUDtGmAUK+BmYOGgjv4eSODK1 EtksuMb7RkDTGlhkazW6ohzlVaZnzUBexteOIg16juYMS1DbhtKz2x7+nTzRBZns 5SWSXjCoCEK6z9SjFZYw+8MoAwNAkotBP/al27WQUfkBtSWeUnIV6zvIrUKst8uO iku5fTdLkFR6hXHeW8JsXMahnZben2EDVVD2mnflUl0/wRNuWju8FqEUlL6OP1bx GaGwRrk1+5oeY3U6DuX4h3IuRopMldoaMe5FQ2Ww72gyamPF72xU9TnfVMdZPO3d hs2/IWCZGoYMyv1DDAu5wGUrP9ee69msUOgqFeOOHgx+DPzJ/A== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v3tmm0043-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:49 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62niv023310 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:49 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:48 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 6/9] arm64: dts: qcom: sdm845: Add DT nodes for the TBUs Date: Tue, 19 Dec 2023 22:02:33 -0800 Message-ID: <20231220060236.18600-7-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 3l2NRDWSdDK9cRKMwdVAXFbRhp6aEOTf X-Proofpoint-ORIG-GUID: 3l2NRDWSdDK9cRKMwdVAXFbRhp6aEOTf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 impostorscore=0 mlxscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=999 adultscore=0 malwarescore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 Add the device-tree nodes for the TBUs (translation buffer units) that are present on the sdm845 platforms. The TBUs can be used debug the kernel and provide additional information when a context faults occur. Describe the all registers, clocks, interconnects and power-domain resources that are needed for each of the TBUs. Signed-off-by: Georgi Djakov --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 74 ++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index c2244824355a..c3dfa74d9403 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -5005,6 +5006,7 @@ apps_smmu: iommu@15000000 { compatible = "qcom,sdm845-smmu-500", "arm,mmu-500"; reg = <0 0x15000000 0 0x80000>; + ranges; #iommu-cells = <2>; #global-interrupts = <1>; interrupts = , @@ -5072,6 +5074,78 @@ , , ; + + #address-cells = <2>; + #size-cells = <2>; + + anoc_1_tbu: tbu@150c5000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150c5000 0x0 0x1000>; + interconnects = <&system_noc MASTER_GNOC_SNOC QCOM_ICC_TAG_ACTIVE_ONLY + &config_noc SLAVE_IMEM_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_AGGRE_NOC_MMU_TBU1_GDSC>; + stream-id-range = <0x0 0x400>; + }; + + anoc_2_tbu: tbu@150c9000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150c9000 0x0 0x1000>; + interconnects = <&system_noc MASTER_GNOC_SNOC QCOM_ICC_TAG_ACTIVE_ONLY + &config_noc SLAVE_IMEM_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_AGGRE_NOC_MMU_TBU2_GDSC>; + stream-id-range = <0x400 0x400>; + }; + + mnoc_hf_0_tbu: tbu@150cd000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150cd000 0x0 0x1000>; + interconnects = <&mmss_noc MASTER_MDP0 QCOM_ICC_TAG_ACTIVE_ONLY + &mmss_noc SLAVE_MNOC_HF_MEM_NOC QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x800 0x400>; + }; + + mnoc_hf_1_tbu: tbu@150d1000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150d1000 0x0 0x1000>; + interconnects = <&mmss_noc MASTER_MDP0 QCOM_ICC_TAG_ACTIVE_ONLY + &mmss_noc SLAVE_MNOC_HF_MEM_NOC QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0xc00 0x400>; + }; + + mnoc_sf_0_tbu: tbu@150d5000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150d5000 0x0 0x1000>; + interconnects = <&mmss_noc MASTER_CAMNOC_SF QCOM_ICC_TAG_ACTIVE_ONLY + &mmss_noc SLAVE_MNOC_SF_MEM_NOC QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x1000 0x400>; + }; + + compute_dsp_tbu: tbu@150d9000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150d9000 0x0 0x1000>; + interconnects = <&system_noc MASTER_GNOC_SNOC QCOM_ICC_TAG_ACTIVE_ONLY + &config_noc SLAVE_IMEM_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x1400 0x400>; + }; + + adsp_tbu: tbu@150dd000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150dd000 0x0 0x1000>; + interconnects = <&system_noc MASTER_GNOC_SNOC QCOM_ICC_TAG_ACTIVE_ONLY + &config_noc SLAVE_IMEM_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_AGGRE_NOC_MMU_AUDIO_TBU_GDSC>; + stream-id-range = <0x1800 0x400>; + }; + + anoc_1_pcie_tbu: tbu@150e1000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x150e1000 0x0 0x1000>; + clocks = <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>; + interconnects = <&system_noc MASTER_GNOC_SNOC QCOM_ICC_TAG_ACTIVE_ONLY + &config_noc SLAVE_IMEM_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_AGGRE_NOC_MMU_PCIE_TBU_GDSC>; + stream-id-range = <0x1c00 0x400>; + }; }; lpasscc: clock-controller@17014000 { From patchwork Wed Dec 20 06:02:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 756553 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EDF4720B06; Wed, 20 Dec 2023 06:03:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="j+Idjhgp" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK5x798008426; 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Wed, 20 Dec 2023 06:02:49 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:48 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 7/9] dt-bindings: arm-smmu: Add TBU support for sc7280 Date: Tue, 19 Dec 2023 22:02:34 -0800 Message-ID: <20231220060236.18600-8-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: PigDtgIdE6nBQk5cHdZSmvJCpwYiZbgV X-Proofpoint-ORIG-GUID: PigDtgIdE6nBQk5cHdZSmvJCpwYiZbgV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 spamscore=0 priorityscore=1501 malwarescore=0 mlxlogscore=812 impostorscore=0 phishscore=0 mlxscore=0 suspectscore=0 clxscore=1015 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 Add the sc7280 SMMU to the platforms that have TBUs. This will allow to validate the DT files against the json schema. Signed-off-by: Georgi Djakov --- Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml index a610af2c7e5e..e983660a8f31 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -337,7 +337,9 @@ allOf: properties: compatible: contains: - const: qcom,sdm845-smmu-500 + enum: + - qcom,sc7280-smmu-500 + - qcom,sdm845-smmu-500 then: patternProperties: "^tbu@[0-9a-f]+": From patchwork Wed Dec 20 06:02:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 756554 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7046214A93; Wed, 20 Dec 2023 06:03:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="UlQShxFu" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK5RaJu006632; Wed, 20 Dec 2023 06:02:51 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=cpBCLiaAy8s2IbGLVtDW niqnGauIl2tLTuAqHIAB9+U=; b=UlQShxFuA8TKgCpAOpWy1RRebTMrIeMUgdAJ 2AoS4pAUw+p2WVLdePvzYDlkdKaq1oDty1ztpPI2BJvmOEgzYU/YlbYWmNqTKz/Y Yhr10+6EEqev52sTACeszPRIo1V9zYn5GDZXl3Ur1xSNOR5d0cxW2kIEwwbAf27C Hu7VKCuN6dvrqWjiyEiJodG5o0VcSFeZnF+H5ctbVBJHJ9DSHdWYCayyy3WOL/Va WLjxnWFUDSFdZj3D7yfsYv3bkXsg/0vl/cB3prH8hZf4y6DQzMpm8+82wqRgVDYT Hcnj29V50jDcd9pzWg8WdToKF4j3tPtS80885RbkjgccqWn4Xw== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v37vxtmqq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:50 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62oVI027932 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:50 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:49 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 8/9] iommu/arm-smmu-qcom: Use the custom fault handler on more platforms Date: Tue, 19 Dec 2023 22:02:35 -0800 Message-ID: <20231220060236.18600-9-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: SpVrOLIBJZdTnDMOr7E47mWpyIJsLFt2 X-Proofpoint-GUID: SpVrOLIBJZdTnDMOr7E47mWpyIJsLFt2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=974 suspectscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 phishscore=0 spamscore=0 clxscore=1015 mlxscore=0 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 The TBU support is now available, so let's allow it to be used on other platforms that have the Qualcomm SMMU-500 implementation with TBUs. This will allow the context fault handler to query the TBUs when a context fault occurs. Signed-off-by: Georgi Djakov --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 6b41a0214db1..fd72b69675a7 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -414,6 +414,10 @@ static const struct arm_smmu_impl qcom_smmu_500_impl = { .reset = arm_mmu500_reset, .write_s2cr = qcom_smmu_write_s2cr, .tlb_sync = qcom_smmu_tlb_sync, +#ifdef CONFIG_ARM_SMMU_QCOM_TBU + .context_fault = qcom_smmu_context_fault, + .context_fault_needs_threaded_irq = true, +#endif }; static const struct arm_smmu_impl sdm845_smmu_500_impl = { From patchwork Wed Dec 20 06:02:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 757172 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0622F16417; Wed, 20 Dec 2023 06:03:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="A0gZ6rjf" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BK613KM018933; Wed, 20 Dec 2023 06:02:51 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=n0la2x7LbhvyThNRjNey +wkh3IECTBOJl2ug/ch+15E=; b=A0gZ6rjfAA2Hijl6c0zEaqvxi+OG5sNAMRjL S0uEyuTwL01y9ykPXtS6J8/t7lThSiNTrk1nwYQWTyxiy0YRdVM7eqBiT7Bv0KtB Y9OhSOSfLvNXwJ773AKRAGOIHGJrQcvk4Q/gtWeu+azya1evGqOB3uQYIQP1ENik /HApK3kFVbb1iNrU4zBH1ZBYRyQv1wufYwSZO0V3qGhYqc0Y01iVDrH6ZO8Xoyfn Xgvb3ckjsGLnD0v4DT0vFooKD2ZeskgK0Mf5KOyGySM/iiruZR/f84qvyT48gCXv WGb7ESYboFINpC2ataWHWnUTdUT/aL92906Ah3uVN7/WkA26+A== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v3tmm0046-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:51 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BK62owl023333 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 20 Dec 2023 06:02:50 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 19 Dec 2023 22:02:49 -0800 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH v3 9/9] arm64: dts: qcom: sc7280: Add DT nodes for the TBUs Date: Tue, 19 Dec 2023 22:02:36 -0800 Message-ID: <20231220060236.18600-10-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> References: <20231220060236.18600-1-quic_c_gdjako@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 5Wj37_wpjWbs4qCRRhV4IYiy52Y9xJ9z X-Proofpoint-ORIG-GUID: 5Wj37_wpjWbs4qCRRhV4IYiy52Y9xJ9z X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 impostorscore=0 mlxscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=839 adultscore=0 malwarescore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312200038 Add the device-tree nodes for the TBUs (translation buffer units) that are present on the sc7280 platforms. The TBUs can be used debug the kernel and provide additional information when a context faults occur. Describe the all registers, clocks, interconnects and power-domain resources that are needed for each of the TBUs. Signed-off-by: Georgi Djakov --- arch/arm64/boot/dts/qcom/sc7280.dtsi | 97 ++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index ff1e07171dc4..d2cf171aa0e0 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -2870,6 +2870,7 @@ compatible = "qcom,sc7280-smmu-500", "qcom,adreno-smmu", "qcom,smmu-500", "arm,mmu-500"; reg = <0 0x03da0000 0 0x20000>; + ranges; #iommu-cells = <2>; #global-interrupts = <2>; interrupts = , @@ -2902,6 +2903,21 @@ power-domains = <&gpucc GPU_CC_CX_GDSC>; dma-coherent; + + #address-cells = <2>; + #size-cells = <2>; + + gfx_0_tbu: tbu@3dd9000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x3dd9000 0x0 0x1000>; + stream-id-range = <0x0 0x400>; + }; + + gfx_1_tbu: tbu@3ddd000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x3ddd000 0x0 0x1000>; + stream-id-range = <0x400 0x400>; + }; }; remoteproc_mpss: remoteproc@4080000 { @@ -5605,6 +5621,7 @@ apps_smmu: iommu@15000000 { compatible = "qcom,sc7280-smmu-500", "arm,mmu-500"; reg = <0 0x15000000 0 0x100000>; + ranges; #iommu-cells = <2>; #global-interrupts = <1>; dma-coherent; @@ -5689,6 +5706,86 @@ , , ; + + #address-cells = <2>; + #size-cells = <2>; + + anoc_1_tbu: tbu@151dd000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151dd000 0x0 0x1000>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &cnoc3 SLAVE_TCU QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x0 0x400>; + }; + + anoc_2_tbu: tbu@151e1000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151e1000 0x0 0x1000>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &cnoc3 SLAVE_TCU QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x400 0x400>; + }; + + mnoc_hf_0_tbu: tbu@151e5000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151e5000 0x0 0x1000>; + interconnects = <&mmss_noc MASTER_MDP0 QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_MMNOC_MMU_TBU_HF0_GDSC>; + stream-id-range = <0x800 0x400>; + }; + + mnoc_hf_1_tbu: tbu@151e9000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151e9000 0x0 0x1000>; + interconnects = <&mmss_noc MASTER_MDP0 QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_MMNOC_MMU_TBU_HF1_GDSC>; + stream-id-range = <0xc00 0x400>; + }; + + compute_dsp_0_tbu: tbu@151ed000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151ed000 0x0 0x1000>; + interconnects = <&nsp_noc MASTER_CDSP_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_TURING_MMU_TBU1_GDSC>; + stream-id-range = <0x1000 0x400>; + }; + + compute_dsp_1_tbu: tbu@151f1000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151f1000 0x0 0x1000>; + interconnects = <&nsp_noc MASTER_CDSP_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_TURING_MMU_TBU0_GDSC>; + stream-id-range = <0x1400 0x400>; + }; + + adsp_tbu: tbu@151f5000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151f5000 0x0 0x1000>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &lpass_ag_noc SLAVE_LPASS_CORE_CFG QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x1800 0x400>; + }; + + anoc_1_pcie_tbu: tbu@151f9000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151f9000 0x0 0x1000>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &cnoc3 SLAVE_TCU QCOM_ICC_TAG_ACTIVE_ONLY>; + stream-id-range = <0x1c00 0x400>; + }; + + mnoc_sf_0_tbu: tbu@151fd000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x0 0x151fd000 0x0 0x1000>; + interconnects = <&mmss_noc MASTER_CAMNOC_SF QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>; + power-domains = <&gcc HLOS1_VOTE_MMNOC_MMU_TBU_SF0_GDSC>; + stream-id-range = <0x2000 0x400>; + }; }; intc: interrupt-controller@17a00000 {