From nobody Fri Oct 3 19:17:17 2025 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 A7AB134F48C for ; Wed, 27 Aug 2025 10:56:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756292165; cv=none; b=Wv73LtrZG076FTysFniUTP/js1KcMhKCzJC9UecwG5p3gQ8qVgrXpiCeGzJ+GeKWdwx5zYT1qiJznr4x65uKD/rfAGvsSuvDB6dgJkFUxJ1PVEgrcfrTWLMbTfnMPmtnkOfpGSlG/QnTh6B+dp0WTd6DJF9GCimq9IKsNwu/zZE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756292165; c=relaxed/simple; bh=RHUVtvl2N2hTcYc4uv0VBvz2bqswq9gFM3vRic01nmI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qatFQUHxmbbIbbOJmhUo3kI7+XQ7XxVMbzjL6D7gDfN3NUCbEEW53Uj94FmERXT6KfKzhWbMsM7upzr2LxwLdYVYsGIkY73nZUyBacPrfRiuvdxx3wBHronXoRz8tzmMYywS9iT3KC4ozRxm73e7X+L602igANX656gZDD+9bjc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=QDPzOQ8S; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="QDPzOQ8S" Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 57R6kC2n008130 for ; Wed, 27 Aug 2025 10:56:02 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=qcppdkim1; bh=g7hLmo2qiXQ EzJFCc6UYcx4UE905+BBd64HJXeuLne8=; b=QDPzOQ8STAnHmoQU03fFs+srCfh COlQt6Z8xqJ9t0Pmtw1zKsrs3VaxRg6by4f3B1G1555vpL8KRMqmfUmeqEm8OMkb T6E4j4pZO2wbiPMlYuWO0DrgqzTr171bMjTIdWkXcgAekWmUI5vaADnEYm5+e/tr a5X+Ufe7+h4uCSxynPNbWA4egj0bR1izJfKLBx5zo+r5fQ6OIf92bZ2dCtVue8KN jJnC8q/lpC15llGGkuSPJ1phtUssCS95wFz+ajjG1kjusnJdi2LVmTFNQoqRaZRz IY3L5D8/6dhB8Ihx76JrasRzQqs/w5RKTdMwnBsotCi9EvSuJfQkHTefJug== Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 48sh8ajm5a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 27 Aug 2025 10:56:01 +0000 (GMT) Received: by mail-pj1-f71.google.com with SMTP id 98e67ed59e1d1-3276af4de80so1245002a91.1 for ; Wed, 27 Aug 2025 03:56:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756292161; x=1756896961; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=g7hLmo2qiXQEzJFCc6UYcx4UE905+BBd64HJXeuLne8=; b=LeXuqytDMJBF6lRaHtqvJUeGYqNeS70AC1v8v59RhXSNZKi0fqDmh8PbfRD6mkUGHI PyO5/5Yi0Eb4cb3x7gQ+olDqw5u3Wyh5U6q1zFu2V9JtSeQDCCz7sfIPfY0C0YQYo5b0 Y0mbRHnRkAFwZUMK7x+MI/1j38GgP3v39K/7bI49SDTZrYcEcSgpKG00No04/lJ/sP64 fpQ+HFKQ00H+hx73u2YexJOMEMsvC1Sn/CuLDCIr7MYoyow+wbePtGPjZ/eiajxqiuxI Xqf0sNd2iSI8RuhfgVySYOBqAYu3P0dE6vreHiLUAuAnUUQ5sHijtKHJLyPlFIUw6y1i VFDw== X-Forwarded-Encrypted: i=1; AJvYcCUap/EXk/6nDISLkXrtuy1VvZP5AXWS/XhamaANZI0sJmOYnXNXtbsOhVFMokXM0DN3d4ctPLAphjy46og=@vger.kernel.org X-Gm-Message-State: AOJu0YxklNpBIu7bbZqLwyeuL65ZpQwMBbay8rmbdHgwJ6FKmzwaBCpC ryUl8X0sCGrIQSnkwDCuE9eEhf2Ug5f1FSG56UWFkD120zJ4wKBfUPi4p21oPwtZEPaDCqXJOfs KKSFqnymTtSBUBfl/8yrh1imqVn+RwUI/g/Oa7GlMOJHj183WdHD9pp7EIRbV7Sv0lhQ= X-Gm-Gg: ASbGncsMvLgNsN92947WEZYyhNYa/Heyw4YRPph4YjlrTTq+Gj6Px1skN/nVvjX19EA 2FlqU9bSHkWghw0yNuKZYiJndHbgkMfUdSduznCseO0ONBZhSZuD18c5Z9cQicS2SYr6LPJGS9m PMmFvIhgH70y8HYhc0hJgeX9cdjnOdK3urnFE4jzT66pGi2X9wY3QKXYOo7j54wzLrAzefkKBsU /6i+QP/PeJfZt4SuJrPuYLYSX9xGLArNnv8l9tmdkw6faxQjSvmEAqM3XzfRkm/suK2PINLXsnE GWDL4RByHhJ4e+oNL9M8Wpe0R+h5DPbXmRUbExT89pzilh/Fg1dcz21NtWMVhOyaul/lpKnhf/U 6tDKze875KZ8y54c2pDmB X-Received: by 2002:a17:90b:528d:b0:321:cfbf:cbd6 with SMTP id 98e67ed59e1d1-32515e3cba6mr25542447a91.6.1756292160751; Wed, 27 Aug 2025 03:56:00 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGwG5WKh/9Jju6a954+EE3Y3ki8sM2PuzrKsD/hmGK39N6A3Kp8fKVEhHRvsLYEuBcOG1Or/g== X-Received: by 2002:a17:90b:528d:b0:321:cfbf:cbd6 with SMTP id 98e67ed59e1d1-32515e3cba6mr25542421a91.6.1756292160259; Wed, 27 Aug 2025 03:56:00 -0700 (PDT) Received: from jiegan.qualcomm.com (tpe-colo-wan-fw-bordernet.qualcomm.com. [103.229.16.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-771f2f2ac7dsm5573035b3a.43.2025.08.27.03.55.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Aug 2025 03:55:59 -0700 (PDT) From: Jie Gan To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Tingwei Zhang Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v3 3/3] coresight: tpda: add sysfs node to flush specific port Date: Wed, 27 Aug 2025 18:55:45 +0800 Message-Id: <20250827105545.7140-4-jie.gan@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250827105545.7140-1-jie.gan@oss.qualcomm.com> References: <20250827105545.7140-1-jie.gan@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Authority-Analysis: v=2.4 cv=cLDgskeN c=1 sm=1 tr=0 ts=68aee441 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=tK8iAimETgkDkOB5pRoA:9 a=uKXjsCUrEbL0IQVhDsJ9:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODI2MDE1MyBTYWx0ZWRfXyYl8e5Nmv5rb y8UVSSZ32TnZT9plmB4Y8A+IO1MlA2QX907mmS7MFF3fDf9Dau3pJBJY/1HJp10u4Pg535npLm4 NOsaSaeZvvecwIaNRXArWFgupruC5BRsta9SCjGMdWRRyA974NV54fqcRbfqCcnb0+iGc0kaG4B E2rKn1eIu+LKI5ArnCj4BgmSS/4OkeVg3PuywYwsuxOesIWZwuB6rT5APyOzhwKAyoK6NJRA8Ey QkJBLXxKjbvB58sHweojL7+oCQ87wGWmrjqTEpwzMv2/4YBUP4MvBkexxXmGDQZrki3c/5v1V/i qjrNJN2qu05jRxSgXZ1rFhxIz40ztie0SM7erXhwgiT5tui7C9pFFqpytMD9WO2H9dwjsoE0me9 Z4zwcCwv X-Proofpoint-GUID: lExViJt-tsHUNMzZP1GbZ-nFr4f4nGOv X-Proofpoint-ORIG-GUID: lExViJt-tsHUNMzZP1GbZ-nFr4f4nGOv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-27_02,2025-08-26_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 malwarescore=0 spamscore=0 adultscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508260153 Content-Type: text/plain; charset="utf-8" From: Tao Zhang Setting bit i in the TPDA_FLUSH_CR register initiates a flush request for port i, forcing the data to synchronize and be transmitted to the sink device. Signed-off-by: Tao Zhang Co-developed-by: Jie Gan Signed-off-by: Jie Gan --- .../testing/sysfs-bus-coresight-devices-tpda | 7 ++++ drivers/hwtracing/coresight/coresight-tpda.c | 41 +++++++++++++++++++ drivers/hwtracing/coresight/coresight-tpda.h | 1 + 3 files changed, 49 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda b/D= ocumentation/ABI/testing/sysfs-bus-coresight-devices-tpda index fb651aebeb31..2cf2dcfc13c8 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda @@ -41,3 +41,10 @@ Contact: Jinlong Mao , Tao= Zhang /port_flush_req +Date: August 2025 +KernelVersion: 6.17 +Contact: Jinlong Mao , Tao Zhang , Jie Gan +Description: + (RW) Configure the bit i to requests a flush operation of port i on the = TPDA. diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtraci= ng/coresight/coresight-tpda.c index a1393962b04d..e9e2736071fb 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -490,6 +490,46 @@ static ssize_t cmbchan_mode_store(struct device *dev, } static DEVICE_ATTR_RW(cmbchan_mode); =20 +static ssize_t port_flush_req_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tpda_drvdata *drvdata =3D dev_get_drvdata(dev->parent); + unsigned long val; + + if (!drvdata->csdev->refcnt) + return -EINVAL; + + guard(spinlock)(&drvdata->spinlock); + CS_UNLOCK(drvdata->base); + val =3D readl_relaxed(drvdata->base + TPDA_FLUSH_CR); + CS_LOCK(drvdata->base); + return sysfs_emit(buf, "0x%lx\n", val); +} + +static ssize_t port_flush_req_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + struct tpda_drvdata *drvdata =3D dev_get_drvdata(dev->parent); + u32 val; + + if (kstrtou32(buf, 0, &val)) + return -EINVAL; + + if (!drvdata->csdev->refcnt || !val) + return -EINVAL; + + guard(spinlock)(&drvdata->spinlock); + CS_UNLOCK(drvdata->base); + writel_relaxed(val, drvdata->base + TPDA_FLUSH_CR); + CS_LOCK(drvdata->base); + + return size; +} +static DEVICE_ATTR_RW(port_flush_req); + static struct attribute *tpda_attrs[] =3D { &dev_attr_trig_async_enable.attr, &dev_attr_trig_flag_ts_enable.attr, @@ -497,6 +537,7 @@ static struct attribute *tpda_attrs[] =3D { &dev_attr_freq_ts_enable.attr, &dev_attr_global_flush_req.attr, &dev_attr_cmbchan_mode.attr, + &dev_attr_port_flush_req.attr, NULL, }; =20 diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtraci= ng/coresight/coresight-tpda.h index 0c9bf2fade56..284ac63699ad 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.h +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -10,6 +10,7 @@ #define TPDA_Pn_CR(n) (0x004 + (n * 4)) #define TPDA_FPID_CR (0x084) #define TPDA_SYNCR (0x08C) +#define TPDA_FLUSH_CR (0x090) =20 /* Cross trigger FREQ packets timestamp bit */ #define TPDA_CR_FREQTS BIT(2) --=20 2.34.1