From patchwork Thu Mar 7 19:05:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778904 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 72B47137C36; Thu, 7 Mar 2024 19:06:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838362; cv=none; b=GIJIToUJ3BxduSWxDNMPOkPQtJ+33vyIH6t+BWARzgt55/DZD3ahIBMzVcGgTAPEa5gFnGnQVujteNO4PZv9SLd3ROeAIWSfh0MkwNwb1zMcpvfU4b1Hy9prBYKYpE4U0kRGTMSxlI0im6AeW2bxFxZ1CJIBGxqhH+WlfS0wQbk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838362; c=relaxed/simple; bh=a+oKRSDGvPpumjUlkzG2ItzlXs0lqrqVESWJKtl2xXE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lPEId1X7HldMFzWCNjoNEqxrRElPUivRfTjVuIhMIFZR2MEXPQgGfFm8aCniJbWiPv2Y0Dts0UKWmBuni0WGKSX86BNyZrGcYA+WbVopJLjg6GfkN57bkprkmTfUnKn7DUEImxLDBLT+/CMonKjfYD0mkzUAsiNFmUkUIGCE6wA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=YLwft2SY; arc=none smtp.client-ip=205.220.168.131 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="YLwft2SY" 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 427Fxw9Q001994; Thu, 7 Mar 2024 19:05:45 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-transfer-encoding:content-type; s= qcppdkim1; bh=ujCuR3daVM8dxtAcTTN3YHTaM4Hfb9UFsyHimopz+Vc=; b=YL wft2SYFIbN5qMKtRyMj22/DSN4xdl1wPgix26iETxLij15Ryw87pokn+Xd60XKpQ fi5mcUS9K329u8Hwwa8H4fSF/X469oYyqcuNFRpt0Zt4+i5A60Wmbzr4M7/mKqPG WLR4a906SzO+fdopWf258G7jPlW4PuOu3kFVuboWPisfdKE5bZAFvB5COcwUEG3T d2W6ebukoq/t9loJwb8qY+tBrU310wkujcs3IiFsGtvo/ldNxES7PWVa9QBAPRo5 0fSZsaYpr5VpxFZotH4qZ2eULOSOiNeLSgmyMt9iI4r02yGSUbrwV2TZ+QR6tdXY fa3qOd8mL+OFRCoD4Z3w== Received: from nasanppmta02.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wqay8rym8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:45 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 427J5iQE004545 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:44 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; Thu, 7 Mar 2024 11:05:43 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 1/7] dt-bindings: iommu: Add Qualcomm TBU Date: Thu, 7 Mar 2024 11:05:19 -0800 Message-ID: <20240307190525.395291-2-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: 1gsKbp414mrTohFeSbr9Cv5RZ3EtTnt0 X-Proofpoint-ORIG-GUID: 1gsKbp414mrTohFeSbr9Cv5RZ3EtTnt0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=999 priorityscore=1501 suspectscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 phishscore=0 spamscore=0 adultscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 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). These TBUs have hardware debugging features that are specific and only present on Qualcomm hardware. Represent them as independent DT nodes. List all the resources that are needed to operate them (such as registers, clocks, power domains and interconnects). Signed-off-by: Georgi Djakov --- .../devicetree/bindings/iommu/qcom,tbu.yaml | 69 +++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/qcom,tbu.yaml diff --git a/Documentation/devicetree/bindings/iommu/qcom,tbu.yaml b/Documentation/devicetree/bindings/iommu/qcom,tbu.yaml new file mode 100644 index 000000000000..82dfe935573e --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/qcom,tbu.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/qcom,tbu.yaml# +$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 with each client core. + +properties: + compatible: + enum: + - qcom,sc7280-tbu + - qcom,sdm845-tbu + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interconnects: + maxItems: 1 + + power-domains: + maxItems: 1 + + qcom,stream-id-range: + description: | + Phandle of a SMMU device and Stream ID range (address and size) that + is assigned by the TBU + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - items: + - description: phandle of a smmu node + - description: stream id base address + - description: stream id size + +required: + - compatible + - reg + - qcom,stream-id-range + +additionalProperties: false + +examples: + - | + #include + #include + #include + + tbu@150e1000 { + compatible = "qcom,sdm845-tbu"; + reg = <0x150e1000 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>; + qcom,stream-id-range = <&apps_smmu 0x1c00 0x400>; + }; +... From patchwork Thu Mar 7 19:05:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778550 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 D9ACE138481; Thu, 7 Mar 2024 19:06:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838366; cv=none; b=admzMMV4ptKK5YFgP/MxnJArWU+lGLNJFMb6HxMPEhLdcpYYXUwztTy0DoW4+pWPU/AEXbYBVhAaevcRLDvDe8HO5Tc9B0a+NJbY0YtLZu1XZTIioFClBNsWYAiVLV3HqLq+R871n9qzDRpGkADXKtKeNc0YwWMCc9Ssn18AK7s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838366; c=relaxed/simple; bh=w9NIMnXWQiVChnsif4pfmm4e+bJpt5H83KwKkJjC9rU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lpsz1/FfslLgt2H8Fh7VVkjKmMVEkWOtmHE2CjVAWcV4pXDwrlCcxfkCA4qfqnBfP3Qf7TSxU/N8nCpEgye2M10DzFMCnsyx06buabWpT2MiItXLT4Al+xFT7mxg5QI147DsrNh2nGToflFg5Z0V0nNrOOThIJSPFbZ3Er3onJE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=IfYAxPUv; arc=none smtp.client-ip=205.220.168.131 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="IfYAxPUv" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 427FxBkh018859; Thu, 7 Mar 2024 19:05:46 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-transfer-encoding:content-type; s= qcppdkim1; bh=njBOwP2K3x9BNj1SHCEmmqhtRWGTl3jiZuZSs3PrC2g=; b=If YAxPUvsg+sn4f4dDs2Q0ujYexGjOuJpyC04kBYcXYw4r2QIz/4qevovrhRzmqJQz EdWr1JsDGJuGrDbpfSZ/9bxPUbuWfFAkG+D6BIMZ3GQt+HGuoAdMVWWrVVFdzIYe 9ErQmcJ4eryGClnf+LOUizoYEH6VcJXCxYdwq5hPMkcfKU+spQhnrsjUvCbcj4Bv vHOKOMfuiJtOnhvmSTUYYyj99h86ifGA6aYITwoAq2mUA15Z/Z8EN8YGnnC6PpVO P0TAbW6j+AJkmbLJW34HMStLOo/lvynAapxXjvClyKnFMl1pK3qIyaE5PQDGlbVg R97e98HyonvjIv5zAMjQ== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wq7husfg2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:46 +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 427J5j8S015034 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:45 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; Thu, 7 Mar 2024 11:05:44 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 2/7] iommu/arm-smmu-qcom-tbu: Add Qualcomm TBU driver Date: Thu, 7 Mar 2024 11:05:20 -0800 Message-ID: <20240307190525.395291-3-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: oynGxpybTFKZfzQez103ZpbX6eZ4GwIc X-Proofpoint-ORIG-GUID: oynGxpybTFKZfzQez103ZpbX6eZ4GwIc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 clxscore=1015 phishscore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 spamscore=0 malwarescore=0 impostorscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 Operating the TBUs (Translation Buffer Units) from Linux on Qualcomm platforms can help with debugging context faults. To help with that, the TBUs can run ATOS (Address Translation Operations) to manually trigger address translation of IOVA to physical address in hardware and provide more details when a context fault happens. The driver will control the resources needed by the TBU to allow running the debug operations such as ATOS, check for outstanding transactions, do snapshot capture etc. Signed-off-by: Georgi Djakov --- drivers/iommu/Kconfig | 9 + 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, 380 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 e0796fa84227..989e481e3151 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -374,6 +374,15 @@ 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 SMMUs on Qualcomm platforms may include Translation Buffer + Units (TBUs) for each master. Enabling support for these units + allows to operate the TBUs and obtain additional information + when debugging memory management issues like 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..2a7c8a9cc9e6 --- /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) 2024 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 + +static LIST_HEAD(tbu_list); +static DEFINE_MUTEX(tbu_list_lock); +static DEFINE_SPINLOCK(atos_lock); + +struct qcom_tbu { + struct device *dev; + struct device_node *smmu_np; + 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 struct qcom_smmu *to_qcom_smmu(struct arm_smmu_device *smmu) +{ + return container_of(smmu, struct qcom_smmu, smmu); +} + +static struct qcom_tbu *qcom_find_tbu(struct qcom_smmu *qsmmu, u32 sid) +{ + struct qcom_tbu *tbu; + u32 start, end; + + mutex_lock(&tbu_list_lock); + + list_for_each_entry(tbu, &tbu_list, list) { + start = tbu->sid_range[0]; + end = start + tbu->sid_range[1]; + + if (qsmmu->smmu.dev->of_node == tbu->smmu_np && + start <= sid && sid < end) { + mutex_unlock(&tbu_list_lock); + return tbu; + } + } + + mutex_unlock(&tbu_list_lock); + dev_err(qsmmu->smmu.dev, "Unable to find TBU for sid 0x%x\n", sid); + return NULL; +} + +static int qcom_tbu_halt(struct qcom_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 qcom_tbu_resume(struct qcom_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 qcom_tbu_trigger_atos(struct arm_smmu_domain *smmu_domain, + struct qcom_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); + + /* Privileged 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 qcom_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 qcom_tbu *tbu; + u32 sctlr_orig, sctlr; + phys_addr_t phys = 0; + unsigned long flags; + int attempt = 0; + int ret; + u64 fsr; + + tbu = qcom_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 = qcom_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 = qcom_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); + qcom_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 qcom_tbu_probe(struct platform_device *pdev) +{ + struct of_phandle_args args = { .args_count = 2 }; + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct qcom_tbu *tbu; + + 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); + + if (of_parse_phandle_with_args(np, "qcom,stream-id-range", "#iommu-cells", 0, &args)) { + dev_err(dev, "Cannot parse the 'qcom,stream-id-range' DT property\n"); + return -EINVAL; + } + + tbu->smmu_np = args.np; + tbu->sid_range[0] = args.args[0]; + tbu->sid_range[1] = args.args[1]; + of_node_put(args.np); + + tbu->base = devm_of_iomap(dev, np, 0, NULL); + if (IS_ERR(tbu->base)) + return PTR_ERR(tbu->base); + + 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(&tbu_list_lock); + list_add_tail(&tbu->list, &tbu_list); + mutex_unlock(&tbu_list_lock); + + return 0; +} + +static const struct of_device_id qcom_tbu_of_match[] = { + { .compatible = "qcom,sc7280-tbu" }, + { .compatible = "qcom,sdm845-tbu" }, + { } +}; + +static struct platform_driver qcom_tbu_driver = { + .driver = { + .name = "qcom_tbu", + .of_match_table = qcom_tbu_of_match, + }, + .probe = qcom_tbu_probe, +}; +builtin_platform_driver(qcom_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 593910567b88..9bb3ae7d62da 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h @@ -30,6 +30,8 @@ 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 836ed6799a80..1670e95c4637 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 Thu Mar 7 19:05:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778551 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 42E79137C30; Thu, 7 Mar 2024 19:06:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838362; cv=none; b=rN0mW5TZzLnU1umtNOrYzRLptBKVyzyUsrOmddog0YVGuQS0kFPnjzv++20XgWNf/BbdGEZ2FTHcl1D8wYC3yaZoOUcVBd2bVj1Zmd34dK6yUC3bjFZk3UeiTZ78kjbVb3mvvGhqqd7gCU799+WE1x6dgbKQDolYO0EeppajIig= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838362; c=relaxed/simple; bh=433s858Ofhq5QpJwmBw+pFYMu3RV2E0h9F/0wjaadU8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=q0KY+LZHcjxEI2pf4XE7cXsKL+XQFJjXpFLyBZzxunmpnvqptwEFPYe7xF3dQIhQqc0eTS6PH5d1AKk1anJ62ktzEXvcb22VlfbatwHenN0h3MDBe5mdbcZso4aKDxDVbHThX52lYsXtqbDXnHUV//qTBSNcAA1YPrLxFejxOCI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=O8zMarDO; arc=none smtp.client-ip=205.220.168.131 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="O8zMarDO" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 427FxUWW016711; Thu, 7 Mar 2024 19:05:46 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-transfer-encoding:content-type; s= qcppdkim1; bh=NYo5bTbP9SVkLOmtSkvA5WYl0Q0ujSV7BQbMNNZl+QQ=; b=O8 zMarDOuaVv+g1rs/1d9z+dm9NDM/aJdyX+8zu9l26LM6mcMmAKWfMfY9c7MX62Zy g+suHKzzHDRwB0EqsU5BiF78fuZGsaeuBTgKmfryh9PEQKRt8wXDZVNwh9JFbOiW YOic17/ZpUqcmJ2D7f+LU734MTD7EgBlxAudXXXqQUYtU+9CQFVCwDWh5PewDMTa +d1l8v+rFXHsibd33svQLgcSbeIO7Tdj8vxc/AM7uKJvsDfcMW1ySpfSCDJCcqBu swMYH3jNAWZDzwWcUMg082CLn3NZubZuFchO/Tb+WbvSzT9So6tV+eXimXhYTAd2 3Ky4GoPJNRv36A1P9L4A== Received: from nasanppmta02.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wq588hrw7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:46 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 427J5jJF004563 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:45 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; Thu, 7 Mar 2024 11:05:44 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 3/7] iommu/arm-smmu: Allow using a threaded handler for context interrupts Date: Thu, 7 Mar 2024 11:05:21 -0800 Message-ID: <20240307190525.395291-4-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: gycJQua4o1j_CWYTeG-F4KfQseZWOJep X-Proofpoint-ORIG-GUID: gycJQua4o1j_CWYTeG-F4KfQseZWOJep X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxlogscore=999 spamscore=0 impostorscore=0 bulkscore=0 mlxscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 lowpriorityscore=0 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 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 c572d877b0e1..dcf0479363c3 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 1670e95c4637..4765c6945c34 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 Thu Mar 7 19:05:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778903 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 71E76137C59; Thu, 7 Mar 2024 19:06:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838363; cv=none; b=dR0pb9GQIp1Jnkq6hBPI9aUM4wlsfeoN6+/KAoY3PJJxMdmH0tBXbL+XVX3TE2fcbcoYE7qd7aXuqQ43IPHpqcx8BCYleTL5onecqOdVzAsQG3/sADPZQJLhgsaVtQo9X7sVw6as4hVEn0J3VKksVYZU1jOe1W4uYl1QyU7TPm4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838363; c=relaxed/simple; bh=jtQm2c060x2Jis7CWVB2SgamdZeL4aM14/6ggD1M4gM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DSTPHhWr8mYnQGaDwKVr/EeXgsgDwiqS3iyHxOpxU43RuqePM6AiIhgVYmA5C0400rC54Y8rHvJjxHQFUTafEXabgld64mL198TDjwnxhR5QGisQW7D42FqYjET82QbcMpGDzDsWuWAFWkZqK59wzAO2Lzj4bVcqK2ZGR/G91MA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=lCiGVhkA; arc=none smtp.client-ip=205.220.168.131 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="lCiGVhkA" 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 427FxHCN016451; Thu, 7 Mar 2024 19:05:47 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-transfer-encoding:content-type; s= qcppdkim1; bh=sjvkCTwgAMmlruYTc3v2fwYmibMqToqnUMn954Ty9Fw=; b=lC iGVhkAD+pcGP8GMRfjpHHmdihtBX2ok7EYGdukSvsX53cQfxqxsndt0cvrmwwiDh 1w6TF3p9XhMw8gS4r/aMtKlU6X0DZ3dg1PZenurQaKGZI+F6h12ftSNuEjEv/LWc PEvG1yyLVJgB9IJAHLhCMtgwjAXLmqjKHsUXxtOyso8RNgQOylGBq+/ezIrvutuX t8O7HqD0jprjXe/PWsjIEHp49CvervD3qrZw3NBU+GMwCYBueAkUQP7Go8gMCMNd 7nIQh7MvTMOfgc6ypgiqDtz+K6AX7n15h1HZqm1WB6Cqf0M9XDE3lHfxM+hPwAnz /mh+a9Au8EnB2a3KP66Q== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wqaxd109x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:46 +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 427J5kQ0015046 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:46 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; Thu, 7 Mar 2024 11:05:45 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 4/7] iommu/arm-smmu-qcom: Use a custom context fault handler for sdm845 Date: Thu, 7 Mar 2024 11:05:22 -0800 Message-ID: <20240307190525.395291-5-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: g-wwBcbYvx5coQSnlXAQz9SJr45reHZ1 X-Proofpoint-ORIG-GUID: g-wwBcbYvx5coQSnlXAQz9SJr45reHZ1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 suspectscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 phishscore=0 spamscore=0 mlxlogscore=999 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 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 | 130 ++++++++++++++++++ drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 4 + 2 files changed, 134 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 2a7c8a9cc9e6..fe0ed4822227 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom-tbu.c @@ -306,6 +306,136 @@ static phys_addr_t qcom_iova_to_phys(struct arm_smmu_domain *smmu_domain, return phys; } +static phys_addr_t qcom_smmu_iova_to_phys_hard(struct arm_smmu_domain *smmu_domain, dma_addr_t iova) +{ + 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 qcom_iova_to_phys(smmu_domain, iova, sid); +} + +static phys_addr_t qcom_smmu_verify_fault(struct arm_smmu_domain *smmu_domain, dma_addr_t iova, u32 fsr) +{ + 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(smmu_domain, iova); + io_pgtable_tlb_flush_all(iop); + phys_post_tlbiall = qcom_smmu_iova_to_phys_hard(smmu_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 arm_smmu_domain *smmu_domain = dev; + 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(&smmu_domain->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(smmu_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 qcom_tbu_probe(struct platform_device *pdev) { struct of_phandle_args args = { .args_count = 2 }; diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 5c7cfc51b57c..7a58b1b96bca 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -422,6 +422,10 @@ 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 Thu Mar 7 19:05:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778549 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 3F3A213AA36; Thu, 7 Mar 2024 19:06:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838370; cv=none; b=oq2NCXG+oGkrIKg1b5r8LjHGcXfXX7Y6uebaJ+9Q2As5ypn4GfXQtlcKIu1c+GdnY1L3nCC0nHeA/xboYwASL0XNqFGpCbB3j6eugFMoWtyNxjtbd6jT+pOl9wmNHkFtN7TrE+BEK5bvuUAosnzdB8cy3lpfUGsd9jP47ZkUmek= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838370; c=relaxed/simple; bh=LguhZzpJmc2AKBeuTASls661QnFobgdUb0WsToqUKus=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=MgasqXPGSkw7Ky/Rp4bbqwOjh4kFB8Ugeud5BOCLk57JTnLwuc5PSKZ5UivCilpkxF/z93CK+Wsm4l9SZcKHjHnuDpu5a/zhSP7a3ml5z/vw20JycPGcjB9rhcBb8g4hwyPGBua8uMYwEXfsE4F84ZD/f+4imHN6DgH3cWRlKIo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=fEyCQvhZ; arc=none smtp.client-ip=205.220.168.131 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="fEyCQvhZ" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 427IQm5c023752; Thu, 7 Mar 2024 19:05:48 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-transfer-encoding:content-type; s= qcppdkim1; bh=RtIv9z0MOmoj5lHluiO/X/ko6/nS/jkD4AEWSes3YOs=; b=fE yCQvhZr3XWfexBhEbchXMr6Z78ioyPRWmJGAdYCHFrlxPeUU4CmjhTsSCuRI79af ZtJ5y47qKvR12wrcxCCaJyHZco/LFph+Q87U/BKy+Fc9Aty8cV8feUBMNgRql2PS J+JayBWT6g4rPOEq2Z+ZI+kFleyx/Wjy13uSLaIqTKsoa2jl3TWfQvsrwuqycdnG u0U+jSinjCDzHN+kmCNjpDzqImzXMaedycuXrHI8mIuNpvHFjlDDYWFK/sOsbSe4 XxNVVPNsO+NxoYeu/DZulnoSV1++og6Rwb4WH5hZg+7+FuadBnxpE/5JDZrxi1d0 6TPAyXjTrNCbEcmj/xkA== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wq588hrwb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:47 +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 427J5kSG007362 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:46 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; Thu, 7 Mar 2024 11:05:45 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 5/7] arm64: dts: qcom: sdm845: Add DT nodes for the TBUs Date: Thu, 7 Mar 2024 11:05:23 -0800 Message-ID: <20240307190525.395291-6-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: 8OREPso_o_T3bJOfrxXB6FVIj_yyTkzK X-Proofpoint-ORIG-GUID: 8OREPso_o_T3bJOfrxXB6FVIj_yyTkzK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxlogscore=999 spamscore=0 impostorscore=0 bulkscore=0 mlxscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 lowpriorityscore=0 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 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 | 70 ++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index 2f20be99ee7e..381537f03fae 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 @@ -5085,6 +5086,75 @@ apps_smmu: iommu@15000000 { ; }; + anoc_1_tbu: tbu@150c5000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x0 0x400>; + }; + + anoc_2_tbu: tbu@150c9000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x400 0x400>; + }; + + mnoc_hf_0_tbu: tbu@150cd000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x800 0x400>; + }; + + mnoc_hf_1_tbu: tbu@150d1000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0xc00 0x400>; + }; + + mnoc_sf_0_tbu: tbu@150d5000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x1000 0x400>; + }; + + compute_dsp_tbu: tbu@150d9000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x1400 0x400>; + }; + + adsp_tbu: tbu@150dd000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x1800 0x400>; + }; + + anoc_1_pcie_tbu: tbu@150e1000 { + compatible = "qcom,sdm845-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>; + qcom,stream-id-range = <&apps_smmu 0x1c00 0x400>; + }; + lpasscc: clock-controller@17014000 { compatible = "qcom,sdm845-lpasscc"; reg = <0 0x17014000 0 0x1f004>, <0 0x17300000 0 0x200>; From patchwork Thu Mar 7 19:05:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778901 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 B87B213665A; Thu, 7 Mar 2024 19:06:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838371; cv=none; b=EPJcp5/QohbQ5dwLjw6PT8ErMeVfncco6Etn7zJbQOK8zdsg+VmJpCcvAss27IK3BV1QDijh1FbZqvNlqAbqubFmcZVWehwt6AGk0R0M4HVrk6WEvk+zcMfnzVbEXulqQ3jumi1+H+KqzQPoKGOFX7qg7kx3P/tF6SEUXFk7pMo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838371; c=relaxed/simple; bh=ndoVGcEPZTeW65Jpuo0QNLQhBOiAh4hrgmZGAAZ/Um0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=kXd/piphzM8SKw8mShsMF+acBRh3h8u4Pq6wIPtPxWPlM2QjuK3bXRxjXtqmkY+bi1vaOMFIaCl1ohNFdG7O33t1FjhCzDuPC4yObLF2KgMagvNz3Tu6RD6Qo2I5K2F4VWvdyYIDHpAU0A6sLNwOhjtB3vWdu4qFBX4cpWyJDEM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=Uypve7XR; arc=none smtp.client-ip=205.220.168.131 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="Uypve7XR" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 427FxeUs020087; Thu, 7 Mar 2024 19:05:49 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-transfer-encoding:content-type; s= qcppdkim1; bh=jqzwN1vuCFLLJR0ky4qG5pZmihPpcc82QgRh0kKcLxI=; b=Uy pve7XRoyVqstRdYn8wkOgsoXCh1x4hD2YgWbwhCgCfIsSK1eCQp8KIxVtiX8KCfc hqKlltm5aPFl3X3yg0qMf4J/a1cTKjdZrmmgDz9+qez/8AMO8qeB2vvll171ajII GI2zbQI3sndMbr4aSQC+GBnl1gE2BXWlx0wDVQRWXaZBLv1SJeslYjEV4rhALVa+ MMLaAYKSz1RUsCD2HveVRv0Xt/6LMN2ZUVSzl9QVGy9WUkT08DUpNGJOs6mPPAIQ pqmuWcH8olYZluWy5N5DG3Snn11i813xDBAlmBqyNmbBrTpPclFFfVIteSZrOs8q E07zNTgIEpo+bvpEr4jw== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wq7husfgc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:48 +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 427J5lUL028098 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:47 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; Thu, 7 Mar 2024 11:05:46 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 6/7] iommu/arm-smmu-qcom: Use the custom fault handler on more platforms Date: Thu, 7 Mar 2024 11:05:24 -0800 Message-ID: <20240307190525.395291-7-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: 8k0mZPwDEQVrlJ1exsBc7JoywBNsOFg_ X-Proofpoint-ORIG-GUID: 8k0mZPwDEQVrlJ1exsBc7JoywBNsOFg_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 clxscore=1015 phishscore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 spamscore=0 malwarescore=0 impostorscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 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 7a58b1b96bca..08e0ad325bab 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -413,6 +413,10 @@ 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 Thu Mar 7 19:05:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 778902 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 3F3F013AA37; Thu, 7 Mar 2024 19:06:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838370; cv=none; b=nEHc5MxSAlz4eeX4wh2SPViLCEWHhuRrTPFN2yC3d5Mrmrn8GxgH5I5s//QzHq/Q7QPcRpHmWHsGM3dvN9UmFwV+aRFLrM0pi9pVQSOc624Ql1AlUujLhPg3nAPMDIdtBbU0R7NPcna7v5GtY+Vnyn6QWrc78+XqI+X+mYIYVG8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709838370; c=relaxed/simple; bh=/zkTE/zzvzqe6XiR3mOeQqTOotqx4uagmm3Drc1iXSY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ti0TYGaqhMh7F8H1SJSFIIszJR1TVLgK3e1oIB8YH4xHyJbXX4JJB8ImVi77QwgHeoAxPax3KTDoSYc2pJEj7iw8fGm3l1/nogAGLWSRqwFQoma6Z8JxPO+1hQdnsYj3kkObrwo1lIZr+d/iI5/pq1pciwE9wFjQV6d1NSKFMFM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=AwkdKYxI; arc=none smtp.client-ip=205.220.168.131 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="AwkdKYxI" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 427FxeUt020087; Thu, 7 Mar 2024 19:05:49 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-transfer-encoding:content-type; s= qcppdkim1; bh=+bUzszJsY1F6wSWzpC0p4NQTeDs9k/xPSLileOx9bz4=; b=Aw kdKYxI7hpsWWekcmp5ETixTHrAVrqJOcFLicYN6fun34HF69LO2rkjGrxvmio/kX t8igIk9/HMiRj3f4ni6T46H+IETdwjGJpc7cq6aAGlQ2xsX4pK8INTV25GUbhwC6 6VFV6p9Lm2uw83XIfbBK9WZ3e/EXt7AyRn1FlmlpuO+YFdUrnRdOZfzN8NCXzFwZ J2DIHB0WraaO5QgUJrNMGNSwIHEJKWWB+sBv0aMWEM+8zcrZbPaBDhGXb1ukOSU7 FQ9Hjo8aIOzChZDh2l6GY7XaFaiLtCuwCTyC1O/K68AOu+Avi9ejLEn6ij5Yj2Ru y+GXun/DWiGS7zSwxxdw== Received: from nasanppmta02.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3wq7husfgd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Mar 2024 19:05:48 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 427J5mu9004609 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Mar 2024 19:05:48 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; Thu, 7 Mar 2024 11:05:47 -0800 From: Georgi Djakov To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v6 7/7] arm64: dts: qcom: sc7280: Add DT nodes for the TBUs Date: Thu, 7 Mar 2024 11:05:25 -0800 Message-ID: <20240307190525.395291-8-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240307190525.395291-1-quic_c_gdjako@quicinc.com> References: <20240307190525.395291-1-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: JIDtZ9KZKJF01MwaKIUmdoPrheqNUEny X-Proofpoint-ORIG-GUID: JIDtZ9KZKJF01MwaKIUmdoPrheqNUEny X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-07_14,2024-03-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 clxscore=1015 phishscore=0 priorityscore=1501 mlxlogscore=938 mlxscore=0 spamscore=0 malwarescore=0 impostorscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2403070133 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 | 89 ++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index 7e7f0f0fb41b..5d8aa182e3a9 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -2970,6 +2970,18 @@ adreno_smmu: iommu@3da0000 { dma-coherent; }; + gfx_0_tbu: tbu@3dd9000 { + compatible = "qcom,sc7280-tbu"; + reg = <0x0 0x3dd9000 0x0 0x1000>; + qcom,stream-id-range = <&adreno_smmu 0x0 0x400>; + }; + + gfx_1_tbu: tbu@3ddd000 { + compatible = "qcom,sc7280-tbu"; + reg = <0x0 0x3ddd000 0x0 0x1000>; + qcom,stream-id-range = <&adreno_smmu 0x400 0x400>; + }; + remoteproc_mpss: remoteproc@4080000 { compatible = "qcom,sc7280-mpss-pas"; reg = <0 0x04080000 0 0x10000>; @@ -5778,6 +5790,83 @@ apps_smmu: iommu@15000000 { ; }; + anoc_1_tbu: tbu@151dd000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x0 0x400>; + }; + + anoc_2_tbu: tbu@151e1000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x400 0x400>; + }; + + mnoc_hf_0_tbu: tbu@151e5000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x800 0x400>; + }; + + mnoc_hf_1_tbu: tbu@151e9000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0xc00 0x400>; + }; + + compute_dsp_0_tbu: tbu@151ed000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x1000 0x400>; + }; + + compute_dsp_1_tbu: tbu@151f1000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x1400 0x400>; + }; + + adsp_tbu: tbu@151f5000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x1800 0x400>; + }; + + anoc_1_pcie_tbu: tbu@151f9000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x1c00 0x400>; + }; + + mnoc_sf_0_tbu: tbu@151fd000 { + compatible = "qcom,sc7280-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>; + qcom,stream-id-range = <&apps_smmu 0x2000 0x400>; + }; + intc: interrupt-controller@17a00000 { compatible = "arm,gic-v3"; reg = <0 0x17a00000 0 0x10000>, /* GICD */