From patchwork Fri Jun 9 05:52:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parikshit Pareek X-Patchwork-Id: 13273243 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 039D1C7EE25 for ; Fri, 9 Jun 2023 05:53:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229796AbjFIFx3 (ORCPT ); Fri, 9 Jun 2023 01:53:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229518AbjFIFx1 (ORCPT ); Fri, 9 Jun 2023 01:53:27 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EA3E30D1; Thu, 8 Jun 2023 22:53:26 -0700 (PDT) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3594WSIb029465; Fri, 9 Jun 2023 05:53:10 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=Sa241Jhc0rB20AIxBgrwQotffKxAIKzXI/CdDmbz5MY=; b=BROYdUlsLF6FwXfEkJpuWovySZaU3VyRaMUnhXuBR5LHwy6vvG5pqxDLW+pkMw7a2IEY 6+OLdT2wfhcho5EZbh0drp5VyvM5MsoGwSUvlXokraYKoCPQLAiGXL6iVKKbaQA98n7q WspV+1EU2MJwZ/BLQbZ0JFXLjgEgvBnyh6nbn8KGy/mYeeQSkE8JJl0go+IsJzlBKslx yoX+wT0JuH5ual7npA+XyK2BV5JX8zeoXdcNjGlbw4Xqk7fX+yc9Bs371b7enQHrLIDr JKwTJ9qon8JZOzvQNN6iAJetGkmum+HyU27FpofLHAVaxRPwibMcPh8wqv20Kap05D9P vQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3r3uja08wa-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 09 Jun 2023 05:53:10 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3595r9Xt010946 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 9 Jun 2023 05:53:09 GMT Received: from hu-ppareek-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Thu, 8 Jun 2023 22:52:48 -0700 From: Parikshit Pareek To: Will Deacon , Robin Murphy , "Joerg Roedel" , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , Andy Gross , Bjorn Andersson , Konrad Dybcio CC: Manivannan Sadhasivam , Dmitry Baryshkov , Marijn Suijten , Adam Skladowski , , , , , "linux-kernel @ vger . kernel . org Prasanna Kumar" , Shazad Hussain , Parikshit Pareek Subject: [PATCH 3/3] iommu/arm-smmu-qcom: Add support for the interconnect Date: Fri, 9 Jun 2023 11:22:25 +0530 Message-ID: <20230609055225.20717-1-quic_ppareek@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230609054141.18938-1-quic_ppareek@quicinc.com> References: <20230609054141.18938-1-quic_ppareek@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 53Kv0YAoHXBldbEtHdhUviorfcHk1GPp X-Proofpoint-ORIG-GUID: 53Kv0YAoHXBldbEtHdhUviorfcHk1GPp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-09_03,2023-06-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 mlxscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 suspectscore=0 spamscore=0 adultscore=0 clxscore=1015 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306090050 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Introduce support to detect the interconnect, and set its bandwidth. For certain targets, we need to set the bandwidth of interconnect, connecting smmu to memory. This is accessed during memory mapped IO access to smmu registers, and during page tables walks. Reported-by: Eric Chanudet Signed-off-by: Parikshit Pareek --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index c71afda79d64..6961d564869b 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "arm-smmu.h" #include "arm-smmu-qcom.h" @@ -549,6 +550,8 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) { const struct device_node *np = smmu->dev->of_node; const struct of_device_id *match; + struct icc_path *icc_path; + int ret, icc_bw; #ifdef CONFIG_ACPI if (np == NULL) { @@ -558,6 +561,19 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) } #endif + icc_path = devm_of_icc_get(smmu->dev, "tbu_mc"); + if (IS_ERR(icc_path)) + return (struct arm_smmu_device *)icc_path; + + ret = of_property_read_u32(np, "icc_bw", &icc_bw); + + /*if interconnect exists, check for the bandwidth value*/ + if (icc_path && !ret) { + ret = icc_set_bw(icc_path, 0, MBps_to_icc(icc_bw)); + if (ret) + return ERR_PTR(ret); + } + match = of_match_node(qcom_smmu_impl_of_match, np); if (match) return qcom_smmu_create(smmu, match->data);