From patchwork Thu Aug 22 06:41:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mao Jinlong X-Patchwork-Id: 13772722 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5642E249F9; Thu, 22 Aug 2024 06:41:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724308912; cv=none; b=X/LYEKoqEYIyEFLtUG4CcvEMtvmw810CiaFWu+jKtHZhSTsb3p80u6d7ldA8LsP7V3TlJwaNg2oNAI/3anjJzvqoyfXTuoIBo5P/raobTnWQ2lpBuDEsEfs212qw4k6ZcJ5sE3u/cd0Ho6ZKrzLky8Edmsxk+qzuLJrwMozfw6M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724308912; c=relaxed/simple; bh=iPAOLNOP6LMnIzd5wwekKibhxBQHyyMqLFxS6fN+170=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=mAz7ce3Z8d0/R4HLuCHqFF+bsnA6sSyQfV4ztPgTx9qX8hZMdRlwkBn0jaqPv2KBTZIGroYnbpaCGY8+PMAaVIMR2r9RqXdsqyxjmp1nUCk9DOPVJEns82sx79Ck1Qg7iv8TgISL5w1zSTbeCxmix+axP5T7MbBryLPGTtukqVc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=A5xMEu8/; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="A5xMEu8/" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 47M12tSl029841; Thu, 22 Aug 2024 06:41:40 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=cPsSDc05vJNyd5jGdAXJw/ wtBIRDF0IF2ojWa6OVQMY=; b=A5xMEu8/BeVcBar4rXe4pTHliXBseIpHcy7vWm lZ2N+uJlQr7qMMRH+53mp8yot4E9oFjE3H6+rYLkB9nHUpdl+tBH08KeUL7a/4Ck XMOMrecm93HYFZNm11VDwCZJkQUF2kNDUexSrTu0sGqbImSj9va+B+yVOoU0mMS8 Bj3AV4vbQLaTSTkYouMUY2oeWDvx0LsYcrgo4QjLdDppO2u1s2NEUYTs4vlVWBqs f2FHu0MvLCiw2YjR4WGgCWglf0yUslczeGT1WP1ab8MA7HsOFaODw0jhNR5fk4bS iGS67uy7l2f7Yckd3CYKptcNxlGy0B/qJ8dDaIsm+P9mlzIA== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4159adc15y-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 22 Aug 2024 06:41:40 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 47M6fc0s004432 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 22 Aug 2024 06:41:38 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 15.2.1544.9; Wed, 21 Aug 2024 23:41:38 -0700 From: Mao Jinlong To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" , Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: Mao Jinlong , , , , , Subject: [PATCH v3 0/2] coresight: Add remote etm support Date: Wed, 21 Aug 2024 23:41:17 -0700 Message-ID: <20240822064122.5231-1-quic_jinlmao@quicinc.com> X-Mailer: git-send-email 2.41.0 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) 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: O4Sawh-vo2tGcFAsihrbCvhLdBPpPTst X-Proofpoint-ORIG-GUID: O4Sawh-vo2tGcFAsihrbCvhLdBPpPTst X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-22_03,2024-08-19_03,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=957 impostorscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 mlxscore=0 bulkscore=0 phishscore=0 adultscore=0 malwarescore=0 priorityscore=1501 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408220048 The system on chip (SoC) consists of main APSS(Applications processor subsytem) and additional processors like modem, lpass. There is coresight-etm driver for etm trace of APSS. Coresight remote etm driver is for enabling and disabling the etm trace of remote processors. It uses QMI interface to communicate with remote processors' software and uses coresight framework to configure the connection from remote etm source to TMC sinks. Example to capture the remote etm trace: Enable source: echo 1 > /sys/bus/coresight/devices/tmc_etf0/enable_sink echo 1 > /sys/bus/coresight/devices/remote_etm0/enable_source Capture the trace: cat /dev/tmc_etf0 > /data/remote_etm.bin Disable source: echo 0 > /sys/bus/coresight/devices/remote_etm0/enable_source Change since V2: 1. Change qcom,inst-id to qcom,qmi-id 2. Fix the error in code for type of remote_etm_remove 3. Depend on QMI helper in Kconfig Changes since V1: 1. Remove unused content 2. Use CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS as remote etm source type. 3. Use enabled instead of enable in driver data. 4. Validate instance id value where it's read from the DT. Mao Jinlong (2): dt-bindings: arm: Add qcom,qmi-id for remote etm coresight: Add remote etm support .../arm/qcom,coresight-remote-etm.yaml | 10 + drivers/hwtracing/coresight/Kconfig | 13 + drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-qmi.h | 89 +++++ .../coresight/coresight-remote-etm.c | 307 ++++++++++++++++++ 5 files changed, 420 insertions(+) create mode 100644 drivers/hwtracing/coresight/coresight-qmi.h create mode 100644 drivers/hwtracing/coresight/coresight-remote-etm.c