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[2620:137:e000::1:20]) by mx.google.com with ESMTP id gn7-20020a1709070d0700b008327270a7e0si1019473ejc.65.2023.01.06.01.29.52; Fri, 06 Jan 2023 01:30:17 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=prXW6gnv; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233754AbjAFJ1H (ORCPT + 99 others); Fri, 6 Jan 2023 04:27:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45338 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232854AbjAFJZ7 (ORCPT ); Fri, 6 Jan 2023 04:25:59 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7EBE8831A6; Fri, 6 Jan 2023 01:22:18 -0800 (PST) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30692mLX007611; Fri, 6 Jan 2023 09:21:38 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=gmAj2/1FJ3NjVWdKQAmD/wz8jmjGTgoRc96KxzjOdAk=; b=prXW6gnvlH4twU7fylKPRoqo1pHl2pUr8kXNhS0/0g27G3UX63aDhlHsJ1L0h2vKBFWk NLB3AsoB/Mjn1YvRX0tkqXZ6Sns+gaBHiB3Gqt3XXeH0QcgE03SxZ/FFSHq09Efe/OTu ALbdHcybHr5SL3QuVkJRzckJ32Gyv5zXZ3sn7UDXIfrhgfsjh7g5q9EQxE4NMpbipdN1 BYfjuwSh8HMh++cdJShMncBjDfco4xzdlj6Tm/AyIAN88XrKrFKgiBVAROpGvurMdWH0 fhelSOnNDRA1ljIVePHMjBujkMRWScN2rYsO23nDvi5QZh47qDPTyATsRDawmypnagPq tQ== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3mx5b0he00-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Jan 2023 09:21:38 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3069LcV2029777 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 6 Jan 2023 09:21:38 GMT Received: from hu-jinlmao-lv.qualcomm.com (10.49.16.6) 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 15.2.986.36; Fri, 6 Jan 2023 01:21:37 -0800 From: Mao Jinlong To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Konrad Dybcio , Mike Leach , Rob Herring , Krzysztof Kozlowski CC: Mao Jinlong , Leo Yan , "Greg Kroah-Hartman" , , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang , Trilok Soni , Hao Zhang , , Bjorn Andersson Subject: [PATCH v16 6/8] Coresight: Add TPDA link driver Date: Fri, 6 Jan 2023 01:21:17 -0800 Message-ID: <20230106092119.20449-7-quic_jinlmao@quicinc.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230106092119.20449-1-quic_jinlmao@quicinc.com> References: <20230106092119.20449-1-quic_jinlmao@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) 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-ORIG-GUID: wZHJYoiwJkO2KRYqzrz8XIoqdYDq6vtc X-Proofpoint-GUID: wZHJYoiwJkO2KRYqzrz8XIoqdYDq6vtc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-06_05,2023-01-05_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 suspectscore=0 mlxscore=0 malwarescore=0 lowpriorityscore=0 priorityscore=1501 spamscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301060073 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754264939603184239?= X-GMAIL-MSGID: =?utf-8?q?1754264939603184239?= TPDA(Trace, Profiling and Diagnostics Aggregator) is to provide packetization, funneling and timestamping of TPDM data. Multiple monitors are connected to different input ports of TPDA.This change is to add tpda enable/disable/probe functions for coresight tpda driver. - - - - - - - - - - - - | TPDM 0| | TPDM 1 | | TPDM 2| - - - - - - - - - - - - | | | |_ _ _ _ _ _ | _ _ _ _ | | | | | | | ------------------ | TPDA | ------------------ Signed-off-by: Tao Zhang Signed-off-by: Mao Jinlong Reviewed-by: Suzuki K Poulose --- drivers/hwtracing/coresight/Kconfig | 11 + drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-tpda.c | 211 +++++++++++++++++++ drivers/hwtracing/coresight/coresight-tpda.h | 35 +++ 4 files changed, 258 insertions(+) create mode 100644 drivers/hwtracing/coresight/coresight-tpda.c create mode 100644 drivers/hwtracing/coresight/coresight-tpda.h diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig index 82811db1a5cf..f580f1a94f96 100644 --- a/drivers/hwtracing/coresight/Kconfig +++ b/drivers/hwtracing/coresight/Kconfig @@ -205,6 +205,7 @@ config CORESIGHT_TRBE config CORESIGHT_TPDM tristate "CoreSight Trace, Profiling & Diagnostics Monitor driver" select CORESIGHT_LINKS_AND_SINKS + select CORESIGHT_TPDA help This driver provides support for configuring monitor. Monitors are primarily responsible for data set collection and support the @@ -213,4 +214,14 @@ config CORESIGHT_TPDM To compile this driver as a module, choose M here: the module will be called coresight-tpdm. +config CORESIGHT_TPDA + tristate "CoreSight Trace, Profiling & Diagnostics Aggregator driver" + help + This driver provides support for configuring aggregator. This is + primarily useful for pulling the data sets from one or more + attached monitors and pushing the resultant data out. Multiple + monitors are connected on different input ports of TPDA. + + To compile this driver as a module, choose M here: the module will be + called coresight-tpda. endif diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile index 6bb9b1746bc7..1712d82e7260 100644 --- a/drivers/hwtracing/coresight/Makefile +++ b/drivers/hwtracing/coresight/Makefile @@ -26,5 +26,6 @@ obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o obj-$(CONFIG_CORESIGHT_TRBE) += coresight-trbe.o obj-$(CONFIG_CORESIGHT_TPDM) += coresight-tpdm.o +obj-$(CONFIG_CORESIGHT_TPDA) += coresight-tpda.o coresight-cti-y := coresight-cti-core.o coresight-cti-platform.o \ coresight-cti-sysfs.o diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c new file mode 100644 index 000000000000..59897980bbb8 --- /dev/null +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -0,0 +1,211 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "coresight-priv.h" +#include "coresight-tpda.h" +#include "coresight-trace-id.h" + +DEFINE_CORESIGHT_DEVLIST(tpda_devs, "tpda"); + +/* Settings pre enabling port control register */ +static void tpda_enable_pre_port(struct tpda_drvdata *drvdata) +{ + u32 val; + + val = readl_relaxed(drvdata->base + TPDA_CR); + val &= ~TPDA_CR_ATID; + val |= FIELD_PREP(TPDA_CR_ATID, drvdata->atid); + writel_relaxed(val, drvdata->base + TPDA_CR); +} + +static void tpda_enable_port(struct tpda_drvdata *drvdata, int port) +{ + u32 val; + + val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port)); + /* Enable the port */ + val |= TPDA_Pn_CR_ENA; + writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); +} + +static void __tpda_enable(struct tpda_drvdata *drvdata, int port) +{ + CS_UNLOCK(drvdata->base); + + if (!drvdata->csdev->enable) + tpda_enable_pre_port(drvdata); + + tpda_enable_port(drvdata, port); + + CS_LOCK(drvdata->base); +} + +static int tpda_enable(struct coresight_device *csdev, int inport, int outport) +{ + struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + spin_lock(&drvdata->spinlock); + if (atomic_read(&csdev->refcnt[inport]) == 0) + __tpda_enable(drvdata, inport); + + atomic_inc(&csdev->refcnt[inport]); + spin_unlock(&drvdata->spinlock); + + dev_dbg(drvdata->dev, "TPDA inport %d enabled.\n", inport); + return 0; +} + +static void __tpda_disable(struct tpda_drvdata *drvdata, int port) +{ + u32 val; + + CS_UNLOCK(drvdata->base); + + val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port)); + val &= ~TPDA_Pn_CR_ENA; + writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); + + CS_LOCK(drvdata->base); +} + +static void tpda_disable(struct coresight_device *csdev, int inport, + int outport) +{ + struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + spin_lock(&drvdata->spinlock); + if (atomic_dec_return(&csdev->refcnt[inport]) == 0) + __tpda_disable(drvdata, inport); + + spin_unlock(&drvdata->spinlock); + + dev_dbg(drvdata->dev, "TPDA inport %d disabled\n", inport); +} + +static const struct coresight_ops_link tpda_link_ops = { + .enable = tpda_enable, + .disable = tpda_disable, +}; + +static const struct coresight_ops tpda_cs_ops = { + .link_ops = &tpda_link_ops, +}; + +static int tpda_init_default_data(struct tpda_drvdata *drvdata) +{ + int atid; + /* + * TPDA must has a unique atid. This atid can uniquely + * identify the TPDM trace source connected to the TPDA. + * The TPDMs which are connected to same TPDA share the + * same trace-id. When TPDA does packetization, different + * port will have unique channel number for decoding. + */ + atid = coresight_trace_id_get_system_id(); + if (atid < 0) + return atid; + + drvdata->atid = atid; + return 0; +} + +static int tpda_probe(struct amba_device *adev, const struct amba_id *id) +{ + int ret; + struct device *dev = &adev->dev; + struct coresight_platform_data *pdata; + struct tpda_drvdata *drvdata; + struct coresight_desc desc = { 0 }; + void __iomem *base; + + pdata = coresight_get_platform_data(dev); + if (IS_ERR(pdata)) + return PTR_ERR(pdata); + adev->dev.platform_data = pdata; + + drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + drvdata->dev = &adev->dev; + dev_set_drvdata(dev, drvdata); + + base = devm_ioremap_resource(dev, &adev->res); + if (!base) + return -ENOMEM; + drvdata->base = base; + + spin_lock_init(&drvdata->spinlock); + + ret = tpda_init_default_data(drvdata); + if (ret) + return ret; + + desc.name = coresight_alloc_device_name(&tpda_devs, dev); + if (!desc.name) + return -ENOMEM; + desc.type = CORESIGHT_DEV_TYPE_LINK; + desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG; + desc.ops = &tpda_cs_ops; + desc.pdata = adev->dev.platform_data; + desc.dev = &adev->dev; + desc.access = CSDEV_ACCESS_IOMEM(base); + drvdata->csdev = coresight_register(&desc); + if (IS_ERR(drvdata->csdev)) + return PTR_ERR(drvdata->csdev); + + pm_runtime_put(&adev->dev); + + dev_dbg(drvdata->dev, "TPDA initialized\n"); + return 0; +} + +static void __exit tpda_remove(struct amba_device *adev) +{ + struct tpda_drvdata *drvdata = dev_get_drvdata(&adev->dev); + + coresight_trace_id_put_system_id(drvdata->atid); + coresight_unregister(drvdata->csdev); +} + +/* + * Different TPDA has different periph id. + * The difference is 0-7 bits' value. So ignore 0-7 bits. + */ +static struct amba_id tpda_ids[] = { + { + .id = 0x000f0f00, + .mask = 0x000fff00, + }, + { 0, 0}, +}; + +static struct amba_driver tpda_driver = { + .drv = { + .name = "coresight-tpda", + .owner = THIS_MODULE, + .suppress_bind_attrs = true, + }, + .probe = tpda_probe, + .remove = tpda_remove, + .id_table = tpda_ids, +}; + +module_amba_driver(tpda_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Trace, Profiling & Diagnostic Aggregator driver"); diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtracing/coresight/coresight-tpda.h new file mode 100644 index 000000000000..0399678df312 --- /dev/null +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef _CORESIGHT_CORESIGHT_TPDA_H +#define _CORESIGHT_CORESIGHT_TPDA_H + +#define TPDA_CR (0x000) +#define TPDA_Pn_CR(n) (0x004 + (n * 4)) +/* Aggregator port enable bit */ +#define TPDA_Pn_CR_ENA BIT(0) + +#define TPDA_MAX_INPORTS 32 + +/* Bits 6 ~ 12 is for atid value */ +#define TPDA_CR_ATID GENMASK(12, 6) + +/** + * struct tpda_drvdata - specifics associated to an TPDA component + * @base: memory mapped base address for this component. + * @dev: The device entity associated to this component. + * @csdev: component vitals needed by the framework. + * @spinlock: lock for the drvdata value. + * @enable: enable status of the component. + */ +struct tpda_drvdata { + void __iomem *base; + struct device *dev; + struct coresight_device *csdev; + spinlock_t spinlock; + u8 atid; +}; + +#endif /* _CORESIGHT_CORESIGHT_TPDA_H */