From patchwork Mon Apr 25 04:03:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mao Jinlong X-Patchwork-Id: 12825260 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8398C433EF for ; Mon, 25 Apr 2022 04:06:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=JNFQmEIV920jyBLp+ahlvVZW6Sp+iM8r+jRzwp3qm64=; b=YLJ5eI67Rprty4 7zwQsfvufIPu28FtJR1N2MjX/DhrM6dzuWmgIO5u7+egEbEaMT9UuYI6rphgLUVkItKhuUT+ZDBkC vN+0H3WWS98RnYr+nhQgIHCl/xqUMt8VxCcP3FOzhWTiSvgGC8rBBlp+uspvitlJ7O/o7GBb1+yLQ 8sea4WrWMzBMcrsUwcx1EPZahKe0evFspM7wzD+lfbnJOU7vS9x05ioHBOJcZKH518vCx72x4SJnZ 96RWZ/Y7lmkD5RPdngB6WjPmW1+p4L7p1SjHtGOTLEFyvAEK1Pwu/d2Tc31hgHFWQJjfwPAWkPnTK OzFmqGWeHDNxdbb+DJEw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nipyI-0084qt-9Z; Mon, 25 Apr 2022 04:05:10 +0000 Received: from alexa-out.qualcomm.com ([129.46.98.28]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nipx7-0084Qo-LL for linux-arm-kernel@lists.infradead.org; Mon, 25 Apr 2022 04:03:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1650859438; x=1682395438; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=hof9Ekix9EjtYtaS54reIGiHeG4nyNfi6qTBdWbqHos=; b=DcT35NtDGNxWcY7aejek+TTU43Tsx4cqDzlNBkhps56vX5C+9RcJNds7 XZ2u//cxS7GZY6jWMacMCBQEIhaCfQzaBJGzdyDIanswFezo6dAB1VghW Euq6W3qliblccOnANH4br4Uv8Uy+uYqjK4TW6ATTPpk9RnNUrVrlTNTIw s=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 24 Apr 2022 21:03:57 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2022 21:03:57 -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; Sun, 24 Apr 2022 21:03:57 -0700 Received: from jinlmao-gv.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 15.2.986.22; Sun, 24 Apr 2022 21:03:53 -0700 From: Mao Jinlong To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Konrad Dybcio CC: Mao Jinlong , Mike Leach , Leo Yan , Greg Kroah-Hartman , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang , Trilok Soni , Hao Zhang , , Bjorn Andersson Subject: [PATCH v6 07/10] Coresight: Add TPDA link driver Date: Mon, 25 Apr 2022 12:03:01 +0800 Message-ID: <20220425040304.37487-8-quic_jinlmao@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220425040304.37487-1-quic_jinlmao@quicinc.com> References: <20220425040304.37487-1-quic_jinlmao@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220424_210357_809496_84B0FD16 X-CRM114-Status: GOOD ( 25.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 | 201 +++++++++++++++++++ drivers/hwtracing/coresight/coresight-tpda.h | 33 +++ 4 files changed, 246 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 5c506a1cd08f..447919565326 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 @@ -214,4 +215,14 @@ 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..126286e89679 --- /dev/null +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -0,0 +1,201 @@ +// 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); + /* Bits 6 ~ 12 is for atid value */ + 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 |= 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->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 &= ~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); + + 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; +} + +static void __exit tpda_remove(struct amba_device *adev) +{ + struct tpda_drvdata *drvdata = dev_get_drvdata(&adev->dev); + + 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..6df1b72b3b76 --- /dev/null +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -0,0 +1,33 @@ +/* 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)) +/* Aggregator port enable bit */ +#define TPDA_Pn_CR_ENA BIT(0) + +#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. + */ +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 */