From patchwork Wed Jun 26 06:07:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mao Jinlong X-Patchwork-Id: 13712322 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 916DB2B9C0; Wed, 26 Jun 2024 06:07:57 +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=1719382079; cv=none; b=CaACdnGWqoDMW0zHW+nd+VqYyk0pFvo/M4isg/LVIbvQtKhcsldpoDs+dqvpw+8ZXc7Awv/j1mNceb2uBIq5w6NWpV+RAZfgpFXatqWfSGP6a3fYLcYEIzpP8ZYXOcvrz57o71EMztoJjXbr4dGDMyFlel6cfsRLRifL/0+pAtg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719382079; c=relaxed/simple; bh=RpW3pyUuDN6ReYlgAjSd9nrfqdrRn2bJnPyDkjkcTUw=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=gdr38vwAfAQD2bxEo4cPhZ9IJtH7ZRQFKDPemUMAJAHNXD0q+Pim8BaIL/BFk/B3yS3QXN6SpGzcY4ydBF9Nkv7fpH0vpaxtRu+wa5MM37vML1Etp8AB6ITArQCUcJ+xiFgo1HI7o0zOxsCedTB8cy+R8tyI9qxslFQmrnlIpcI= 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=Olw+FSv4; 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="Olw+FSv4" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45PK6elr018110; Wed, 26 Jun 2024 06:07:38 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=HlqBNYpYDnsP6od7gKlrv+ WkUaBVZGago0uliQENjrg=; b=Olw+FSv48FSDkx9wM/dIKH8u+BUZqFpB+xJ+6c P/c/8woGZHP5uAIGaTREI6CDPF92abxpZANGjM84bTS8Fpxe5yT38YaUbbPzJmEx Dwses165XTwWlgnihzr2ksr8FnXMkp60/XEEDopc1Xd1TWUxqSJWTkrd/0ZDUblR 61zjJfxkN6Y9vQa6jH+zy8kyTC2iRQsm66za0Xj9bccXc5CilXZgY9p+dMuB9gvD O3Ndtntv6sMxyPVZeo+NcMB1FRXZD+rINKfN0qka88rIB9eXsuwCqNGLPp/c3sBQ V0jQRLFtpUibeLOurw/57G+kpEzMXXe2xKdoMQQnFBRNE4iA== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3ywnm6rbjq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 Jun 2024 06:07:38 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 45Q67aVT031734 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 26 Jun 2024 06:07:36 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; Tue, 25 Jun 2024 23:07:36 -0700 From: Mao Jinlong To: Suzuki K Poulose , Mike Leach , James Clark , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mao Jinlong , "Alexander Shishkin" CC: , , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang , songchai Subject: [PATCH v3 0/3] coresight: Add preferred trace id support Date: Tue, 25 Jun 2024 23:07:19 -0700 Message-ID: <20240626060724.28862-1-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-GUID: RsaxaYJO0j_7DpXlAyhf_thPkv9rC1hr X-Proofpoint-ORIG-GUID: RsaxaYJO0j_7DpXlAyhf_thPkv9rC1hr 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=2024-06-26_03,2024-06-25_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 suspectscore=0 phishscore=0 clxscore=1011 spamscore=0 mlxscore=0 malwarescore=0 mlxlogscore=898 lowpriorityscore=0 impostorscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2406260046 Some HW has static trace id which cannot be changed via software programming. For this case, configure the trace id in device tree with "arm,trace-id = ", and call coresight_trace_id_get_system_id with the trace id value in device probe function. The id will be reserved for the HW all the time if the device is probed. Changes since V2: 1. Change "trace-id" to "arm,trace-id". 2. Add trace id flag for getting preferred id or ODD id. Changes since V1: 1. Add argument to coresight_trace_id_get_system_id for preferred id instead of adding new function coresight_trace_id_reserve_system_id. 2. Add constraint to trace-id in dt-binding file. Mao Jinlong (3): dt-bindings: arm: Add arm,trace-id for coresight dummy source coresight: Add support to get preferred id for system trace sources coresight: dummy: Add reserve atid support for dummy source .../sysfs-bus-coresight-devices-dummy-source | 15 +++++ .../arm/arm,coresight-dummy-source.yaml | 6 ++ drivers/hwtracing/coresight/coresight-dummy.c | 59 +++++++++++++++++-- .../hwtracing/coresight/coresight-platform.c | 25 ++++++++ drivers/hwtracing/coresight/coresight-stm.c | 2 +- drivers/hwtracing/coresight/coresight-tpda.c | 2 +- .../hwtracing/coresight/coresight-trace-id.c | 35 +++++++---- .../hwtracing/coresight/coresight-trace-id.h | 11 +++- include/linux/coresight.h | 1 + 9 files changed, 137 insertions(+), 19 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source