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 73750C433EF for ; Thu, 24 Mar 2022 14:30:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349655AbiCXOcS (ORCPT ); Thu, 24 Mar 2022 10:32:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233438AbiCXOcQ (ORCPT ); Thu, 24 Mar 2022 10:32:16 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E134215FFC; Thu, 24 Mar 2022 07:30:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1648132245; x=1679668245; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=lOc8RNcui7yAjd2ZB4PWlz7S09gUkQKjknF6hIGlRPY=; b=PVFFSYryWPB6CUjd/A+I8gE6cJkKDlAZOkJ+iUguDCSLdsIoMag8304M kycdudpS4uDn5q/iEMd1jyWkB4vDfKz0dJuC3BUKdxFQqLK8pgoQSqElx UyXeKUhfg77JIiQqg2ikhWTDFH1nz6nfhUkgKyTD6/i4CgbWZ8KIXW73r I=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 24 Mar 2022 07:30:44 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg07-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2022 07:30:44 -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; Thu, 24 Mar 2022 07:30:43 -0700 Received: from [10.253.74.197] (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; Thu, 24 Mar 2022 07:30:40 -0700 Message-ID: <22de32f4-7a3f-ca2d-ba5e-0d0c9adefe3d@quicinc.com> Date: Thu, 24 Mar 2022 22:30:37 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH v4 05/10] coresight-tpdm: Add integration test support Content-Language: en-US To: Greg Kroah-Hartman CC: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Mike Leach , Leo Yan , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang , Trilok Soni , Hao Zhang , References: <20220324121734.21531-1-quic_jinlmao@quicinc.com> <20220324121734.21531-6-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: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Greg, On 3/24/2022 8:28 PM, Greg Kroah-Hartman wrote: > On Thu, Mar 24, 2022 at 08:17:29PM +0800, Mao Jinlong wrote: >> Integration test for tpdm can help to generate the data for >> verification of the topology during TPDM software bring up. >> >> Sample: >> echo 1 > /sys/bus/coresight/devices/tmc_etf0/enable_sink >> echo 1 > /sys/bus/coresight/devices/tpdm1/enable_source >> echo 1 > /sys/bus/coresight/devices/tpdm1/integration_test >> echo 2 > /sys/bus/coresight/devices/tpdm1/integration_test >> cat /dev/tmc_etf0 > /data/etf-tpdm1.bin >> >> Signed-off-by: Tao Zhang >> Signed-off-by: Mao Jinlong >> --- >> drivers/hwtracing/coresight/Kconfig | 9 ++++ >> drivers/hwtracing/coresight/coresight-tpdm.c | 56 +++++++++++++++++++- >> drivers/hwtracing/coresight/coresight-tpdm.h | 8 +++ >> 3 files changed, 72 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig >> index 5c506a1cd08f..60248fef4089 100644 >> --- a/drivers/hwtracing/coresight/Kconfig >> +++ b/drivers/hwtracing/coresight/Kconfig >> @@ -214,4 +214,13 @@ config CORESIGHT_TPDM >> To compile this driver as a module, choose M here: the module will be >> called coresight-tpdm. >> >> +config CORESIGHT_TPDM_INTEGRATION_TEST >> + bool "Enable CoreSight Integration Test For TPDM" >> + depends on CORESIGHT_TPDM >> + help >> + This option adds support for the CoreSight integration test on this >> + devie. Coresight architecture provides integration control modes of >> + 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. > Why is this a Kconfig option? Why would you never not want this? I refer to "CONFIG_CORESIGHT_CTI_INTEGRATION_REGS" for integration mode. > >> endif >> diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c >> index a8d257a591f3..cddd398be0cd 100644 >> --- a/drivers/hwtracing/coresight/coresight-tpdm.c >> +++ b/drivers/hwtracing/coresight/coresight-tpdm.c >> @@ -124,7 +124,60 @@ static void tpdm_init_default_data(struct tpdm_drvdata *drvdata) >> __set_bit(i, drvdata->datasets); >> } >> CS_LOCK(drvdata->base); >> - } >> +} >> + >> +#ifdef CONFIG_CORESIGHT_TPDM_INTEGRATION_TEST > Try to keep #ifdefs out of .c files please. I will check to see if it is possible for the integration test function. >> +static ssize_t integration_test_store(struct device *dev, >> + struct device_attribute *attr, >> + const char *buf, >> + size_t size) >> +{ >> + int i, ret = 0; >> + unsigned long val; >> + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); >> + >> + ret = kstrtoul(buf, 10, &val); >> + if (ret) >> + return ret; >> + >> + if (val != 1 && val != 2) >> + return -EINVAL; >> + >> + if (!drvdata->enable) >> + return -EINVAL; >> + >> + if (val == 1) >> + val = ATBCNTRL_VAL_64; >> + else >> + val = ATBCNTRL_VAL_32; >> + CS_UNLOCK(drvdata->base); >> + writel_relaxed(0x1, drvdata->base + TPDM_ITCNTRL); >> + >> + for (i = 1; i < 5; i++) >> + writel_relaxed(val, drvdata->base + TPDM_ITATBCNTRL); >> + >> + writel_relaxed(0, drvdata->base + TPDM_ITCNTRL); >> + CS_LOCK(drvdata->base); >> + return size; >> +} >> +static DEVICE_ATTR_WO(integration_test); >> +#endif /* CORESIGHT_TPDM_INTEGRATION_TEST */ >> + >> +static struct attribute *tpdm_attrs[] = { >> +#ifdef CONFIG_CORESIGHT_TPDM_INTEGRATION_TEST >> + &dev_attr_integration_test.attr, >> +#endif /* CORESIGHT_TPDM_INTEGRATION_TEST */ >> + NULL, >> +}; >> + >> +static struct attribute_group tpdm_attr_grp = { >> + .attrs = tpdm_attrs, >> +}; >> + >> +static const struct attribute_group *tpdm_attr_grps[] = { >> + &tpdm_attr_grp, >> + NULL, >> +}; > ATTRIBUTE_GROUPS()? > > thanks, > > greg k-h Thanks Jinlong Mao