From mboxrd@z Thu Jan 1 00:00:00 1970 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 1EFB2C433FE for ; Wed, 20 Apr 2022 14:43:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379747AbiDTOqU (ORCPT ); Wed, 20 Apr 2022 10:46:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344885AbiDTOqR (ORCPT ); Wed, 20 Apr 2022 10:46:17 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7012F2C64D; Wed, 20 Apr 2022 07:43:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1650465810; x=1682001810; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=ii4uzgy/fOsx88TZkK6pUnYdS+9T50Wpu5glELakSwc=; b=CnWqqT7RFhgfCthQEia89RkDVnA9NO+NOeurML71+iKBQJkxEKGnRMj+ TvsO0RlXEPzpDfG+bz8JcHx6iwP+N4T3NWUWTvCFEg8P73fJUElAwNRgT OFITHwpp038iIiJepHBz3P2KWcgreS/n48rsi+FCFA8+fYHBW/yfCQTF5 U=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-02.qualcomm.com with ESMTP; 20 Apr 2022 07:43:30 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg02-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2022 07:43:29 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 20 Apr 2022 07:43:29 -0700 Received: from [10.239.133.9] (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 15.2.986.22; Wed, 20 Apr 2022 07:43:26 -0700 Message-ID: <45cfcd4a-305b-0143-fb78-5d71b89858a0@quicinc.com> Date: Wed, 20 Apr 2022 22:43:24 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.5.1 Subject: Re: [PATCH v5 07/10] Coresight: Add TPDA link driver Content-Language: en-US To: Mike Leach CC: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Leo Yan , "Greg Kroah-Hartman" , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang , Trilok Soni , Hao Zhang , References: <20220412125035.40312-1-quic_jinlmao@quicinc.com> <20220412125035.40312-8-quic_jinlmao@quicinc.com> From: Jinlong Mao In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit 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) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mike, On 4/19/2022 5:51 PM, Mike Leach wrote: > Hi > > On Tue, 12 Apr 2022 at 13:51, Mao Jinlong wrote: >> 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 >> --- >> drivers/hwtracing/coresight/Kconfig | 11 ++ >> drivers/hwtracing/coresight/Makefile | 1 + >> drivers/hwtracing/coresight/coresight-tpda.c | 192 +++++++++++++++++++ >> drivers/hwtracing/coresight/coresight-tpda.h | 32 ++++ >> 4 files changed, 236 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 60248fef4089..317c5e7f4819 100644 >> --- a/drivers/hwtracing/coresight/Kconfig >> +++ b/drivers/hwtracing/coresight/Kconfig >> @@ -223,4 +223,15 @@ config CORESIGHT_TPDM_INTEGRATION_TEST >> operation to facilitate integration testing and software bringup >> and/or to instrument topology discovery. The TPDM utilizes integration >> mode to accomplish integration testing and software bringup. >> + >> +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 > TDPA / TDPM are functionally linked - it does not make sense to > configure one without the other. > Kernel configuration should reflect this - as a minimum TDPM > configuration should select TDPA. > > > >> 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..9519990c68e2 >> --- /dev/null >> +++ b/drivers/hwtracing/coresight/coresight-tpda.c >> @@ -0,0 +1,192 @@ >> +// SPDX-License-Identifier: GPL-2.0 >> +/* >> + * Copyright (c) 2022 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 |= (drvdata->atid << 6); >> + 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 = val | BIT(0); > #define a constant in the header to use here. I will update it. > >> + 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->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); >> + >> + mutex_lock(&drvdata->lock); >> + _tpda_enable(drvdata, inport); >> + drvdata->enable = true; >> + mutex_unlock(&drvdata->lock); >> + >> + dev_info(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 = val & ~BIT(0); > use a #defined constant. > >> + 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); >> + >> + mutex_lock(&drvdata->lock); >> + _tpda_disable(drvdata, inport); >> + drvdata->enable = false; >> + mutex_unlock(&drvdata->lock); >> + >> + dev_info(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 connect to the TPDA. >> + */ >> + atid = coresight_trace_id_get_system_id(coresight_get_trace_id_map()); >> + 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 }; >> + >> + 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); >> + >> + drvdata->base = devm_ioremap_resource(dev, &adev->res); >> + if (!drvdata->base) >> + return -ENOMEM; >> + >> + mutex_init(&drvdata->lock); >> + >> + 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; >> + 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; >> +} >> + >> +/* >> + * 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, >> + .id_table = tpda_ids, >> +}; >> + > There is no code to release resources when this module is unloaded. > You need a .remove function, that as a minimum calls > coresight_unregister(). > > Regards > > Mike Yes. Need add remove function for tpda driver. > >> +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..6ac33b9c1ea4 >> --- /dev/null >> +++ b/drivers/hwtracing/coresight/coresight-tpda.h >> @@ -0,0 +1,32 @@ >> +/* SPDX-License-Identifier: GPL-2.0 */ >> +/* >> + * Copyright (c) 2022 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)) >> + >> +#define TPDA_MAX_INPORTS 32 >> + >> +/** >> + * 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. >> + * @lock: lock for the enable value. >> + * @enable: enable status of the component. >> + * @traceid: trace source identification for the data packet by TPDA. >> + */ >> +struct tpda_drvdata { >> + void __iomem *base; >> + struct device *dev; >> + struct coresight_device *csdev; >> + struct mutex lock; >> + bool enable; >> + u32 atid; >> +}; >> + >> +#endif /* _CORESIGHT_CORESIGHT_TPDA_H */ >> -- >> 2.17.1 >> > > -- > Mike Leach > Principal Engineer, ARM Ltd. > Manchester Design Centre. UK