From patchwork Tue Nov 7 06:09:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mao Jinlong X-Patchwork-Id: 13447934 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 2D33D1FD2; Tue, 7 Nov 2023 06:10:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="TfQsnYm6" Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5ECCD10F; Mon, 6 Nov 2023 22:10:06 -0800 (PST) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3A75QHOg009740; Tue, 7 Nov 2023 06:09:53 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=TJ6K7QS0tX20YF3a9J4LB3meI6Sg6zcVszwc0Lz3C3k=; b=TfQsnYm6xQIOf683WMo98Rc6eYJaiXQQ72dULwCT3jMaa/OZeYIXPemTm1F4OkXXVcpc qck4aGt1gNUSC2DbZI3QyvYfIMll+J89TSLahSq9SaiBSWUtpF1QTZ8ePG6UQ4lodXcf Zm26Zwc1Xn+JVZc2MyS9M+BtQe/fkQZjvKydUgpWm6YzduAVwRVH9W81eC2vu1N7VjS2 snrEqqlo8CRWgfxikxvDLpwBIBocaeXREQFfwdmuCTNabJuBnMm1zcSoxB15LooXjKTW ZWGO2jXsTgr5cW9OMpzgHTQYiOvag1K8a0T44AAlHdYN09C8tXtPTV/Q4keZPOvZuhSL kg== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3u72avssu5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Nov 2023 06:09:53 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3A769p6J019474 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 7 Nov 2023 06:09:51 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 15.2.1118.39; Mon, 6 Nov 2023 22:09:51 -0800 From: Mao Jinlong To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" , Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley CC: Mao Jinlong , , , , , , Yuanfang Zhang , Tao Zhang Subject: [PATCH v1 0/2] coresight: Add remote etm support Date: Mon, 6 Nov 2023 22:09:33 -0800 Message-ID: <20231107060939.13449-1-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-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) 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: llF_Nw759j3z7MjuQrLA2kX7XyWzG2UG X-Proofpoint-GUID: llF_Nw759j3z7MjuQrLA2kX7XyWzG2UG X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-06_15,2023-11-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 mlxlogscore=690 impostorscore=0 phishscore=0 bulkscore=0 adultscore=0 priorityscore=1501 clxscore=1015 spamscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311070048 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 Mao Jinlong (2): coresight: Add remote etm support dt-bindings: arm: Add remote etm driver .../arm/qcom,coresight-remote-etm.yaml | 59 ++++ drivers/hwtracing/coresight/Kconfig | 9 + drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-core.c | 3 + drivers/hwtracing/coresight/coresight-qmi.h | 109 ++++++ .../coresight/coresight-remote-etm.c | 325 ++++++++++++++++++ include/linux/coresight.h | 1 + 7 files changed, 507 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml create mode 100644 drivers/hwtracing/coresight/coresight-qmi.h create mode 100644 drivers/hwtracing/coresight/coresight-remote-etm.c