From patchwork Wed Aug 7 07:10:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mao Jinlong X-Patchwork-Id: 817475 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 1B84377F1B; Wed, 7 Aug 2024 07:11:19 +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=1723014681; cv=none; b=oHmSK1Zr4hTeN8YqEh9HhiuIX5xjM+zoJQ+nwk55Vc9eUjSJ6xS/23x2fWqWEUG6Hdmkgi+JIrD/kxX4/V6+ll6UNu4VxLNo6cxVFhXgVzkHoFS3DOMP8T2D0HR9Kmpmk/er5UqZo2GSKEPLNe1i406Jzte03j9Im1dXdHDhE+0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723014681; c=relaxed/simple; bh=xJaE7eCKnm1gBlvUCtb3HisyThuG1vzLIgNAHTr9aT0=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=RPgwLg6LDapkymPJ4gaOwSpD06ZVTU64b++YxfmKe/GelaMW0NXUP1t79B1aAJ3ir5hIqb9pOZe6j9Ki9bReK9NPC+uaage3wpAz/V7vKZidsE3vWe/yyOq2eytUxj+oczAy1FRQhkWyic+ycqdN3GvFNo5LjD/eqvAAG2s8k/k= 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=dPBFOOp2; 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="dPBFOOp2" Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 476H6jB6020449; Wed, 7 Aug 2024 07:11:07 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=ef1BLjOwFFkSHByzLUk67k Ap82GKbpXbodrmLYJQK7o=; b=dPBFOOp2HNeUIQWLzM5LNNEXJWga+pGo9JG7WS iqaB1KQkpi4yzk5zPvbERvbZHYfCsigtTBRdd5KetvHHwu+vI+Y7C+Fy2Svmy7Kz Ffd22x8INP1j3lqFpwi60jquEpQdnsTClFRCgxe2pe6pxQjiO4/k3/GACrd7bryL khZdulny/bK060VtdOP8DWQnWPPElacq8JDZWUwQqKAxOskddZAGtl3iZEvAtRe+ z8nKsFjeJd19IhwIesfk2KEoAsfwDc+o0Yq8ALM0B/xhdVTGMqiWcI3Udy53A9wD WIz/Z/HQUdsebR0iQgmnEe90jTX5p2mWpfIOaO5qNUVcXMzQ== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 40scmu1v44-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Aug 2024 07:11:07 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 4777B5Hf023192 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 7 Aug 2024 07:11:05 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, 7 Aug 2024 00:11:04 -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 v2 0/2] coresight: Add remote etm support Date: Wed, 7 Aug 2024 00:10:49 -0700 Message-ID: <20240807071054.12742-1-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: nalasex01b.na.qualcomm.com (10.47.209.197) 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: yQFVpwHFqjpa-qFJ-q5veMLWMidy3hJ4 X-Proofpoint-GUID: yQFVpwHFqjpa-qFJ-q5veMLWMidy3hJ4 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=2024-08-07_04,2024-08-06_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 clxscore=1015 malwarescore=0 impostorscore=0 adultscore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 spamscore=0 mlxlogscore=941 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408070048 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 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,inst-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 | 308 ++++++++++++++++++ 5 files changed, 421 insertions(+) create mode 100644 drivers/hwtracing/coresight/coresight-qmi.h create mode 100644 drivers/hwtracing/coresight/coresight-remote-etm.c