From nobody Wed Dec 17 01:46:21 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 C7F2427FD54 for ; Thu, 11 Dec 2025 06:12:07 +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=1765433529; cv=none; b=mW2jhmHBWGgPjsYvKDb3qASxmnOq89cSYbiYeaOfPzXBD5PHuXFqVuiSCJiMsKEbLkeOZcevsK8SS/yaJJlG9CqW5t+ZeehlY2phpMoJ8/9FmP/Hz8BzRpKYc2MF1+yMkV+H0NQcuGejBydiykGdObeIrmIR2wOfSaFj1KeYngo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765433529; c=relaxed/simple; bh=xJnis8AYP6mUACqX8hrlzR6o4WFt5DY5g2nwBMuPaFg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=YslHQrV6cu1GIrjwEklh2jU6/gEVtM01q4tsIlpivMHmlqMGlm10dF+4mFVVygt//LdHHPGpKEFNzPVkWhrk88DA1azh5i1psHAEw0OVBTURkSvdz+dVCRfLVdcldLOw2gCmBg0b+LK9tsnYEDbrIdPe/fsPURyuxKvO9Bi2FLA= 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=cqZFi+VN; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=EbmY0EsB; 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="cqZFi+VN"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="EbmY0EsB" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 5BALSar43563582 for ; Thu, 11 Dec 2025 06:12:07 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= CiBtz0qC1MDsW7WxZbfp2FTkcuI+8Qu6DtaIpmNwpuU=; b=cqZFi+VNhTVteuRA OaTq6rL4MYQPmkffBoJYBxfC7fkwfug2tDIaXMOWejFGqNRV8B8qliNOc9stmqUf hpEIBiisViaVNYCkhV/VrVUlLqEyXPsMTHJ7RpRCFV8lGAilDG6TnD6uMYkz+jWy LmEsjVMTxUnIXrnoYjy+Aq0r+OospBkc6J2QsRk1edcONkGcoDS6HUfuogFn1Y68 FaE2Vkbd9F153uP1+IEbMubGFYt3pP9H1KnCQgWFbSNQEdDOLkW3dIeI4LqmW0Q8 dPkZHowfpQeqB9xQw1DpmhEu0fplvtf4vTSlfqJlQFu7+pqM8CKv2lqZFvDyPsPg 1cfWtA== Received: from mail-pl1-f198.google.com (mail-pl1-f198.google.com [209.85.214.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4aygtfh6v6-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 11 Dec 2025 06:12:06 +0000 (GMT) Received: by mail-pl1-f198.google.com with SMTP id d9443c01a7336-29557f43d56so9004745ad.3 for ; Wed, 10 Dec 2025 22:12:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1765433526; x=1766038326; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=CiBtz0qC1MDsW7WxZbfp2FTkcuI+8Qu6DtaIpmNwpuU=; b=EbmY0EsBdh4VaPliIewkWf9tVwFHhPenX0TplFVU7Iz4+lfNRPMhCxD4wydvVSQ9r7 krp82Aq0yE5uoLnS0jmyXS+6kb3CxQdsNI4IvwOqs8cB8e4+k5eBywIPjm8DlQ7a0Y6m UUayq3uvnmLfumO8hAWnpQ96qkOnBACNv4aivu/UZvhcprNOSZveC2BrR4NqdbaFC2RH 5k15g2DiqUGiR7Arz4PZ0DzYjsf+jRaYMAP3ym75LIkkDpp7yTQGJVljnpyFNT60pR/q pVpKEGAa0LQgUEWFfknhwAThdLGMORh5AesOaHOMY0zKidEVZBESUccCk88lMQ8W14YG 7L2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765433526; x=1766038326; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=CiBtz0qC1MDsW7WxZbfp2FTkcuI+8Qu6DtaIpmNwpuU=; b=VI95/SSDdWO/yEPS3RNs1dVJYNl6ubTTlI6Yp6waA2cz587RnPAJkYi19S5zzbedRo JqmKvXW7cQRcXp3VD/fg2E8gzYiDv+kUCHeXGeSV3wcN+xyT8gW2OnBFPUGSpdaSxrz3 16eerZds1ek798ME37zDWeVD+rvacrvKHdtD4OgWV33QcPejI2tKP3jI2B59q49hdEkW m396pR07O5FJBvU+wJiWGO9OecWrcO42lGABXZKVz89OlTkwYEWZ27ujGz1IW1nT56x7 ncKInnu0/DTwqX6dVdEHIGDWgsM75XfId6C48nYW9auH05V14GTztrMvcNrS7ZlFKxw4 n0Uw== X-Forwarded-Encrypted: i=1; AJvYcCXajl7omOK2KauODIG+F1Qm+nD9dpCW6YRXXO8Gu7VoLCeM6Z3EkSyxVOTh3VSF5JBQo190p+KOUQQ7HRI=@vger.kernel.org X-Gm-Message-State: AOJu0Yz243oeziRMPfp71LghTYMYZEoJ58TpNxBe8ihfUrYz52glNFB5 JP1I1sfcJxPBhQ29IdCG1P1tVz13wha+pWq/Udch/xA9NnTZAgaXSEmqIjZC/LdEjPLTa4nCDmu aLLf9oTn+DEVuEj9vpKJBefEdTwgCa1Kfvj+d8S4zVZjwy6LbnpaFYHlvZz4c7AeZE7Y= X-Gm-Gg: AY/fxX5RQShtMcipctRJdTba2yEqWAt+0eKPvBNbpwv0xFjaUAMJsj02OwiYVnrbWUU /c5sY9gtrr9ODWcNKlemHoT+oV/1T7u9IF2gX0yM3jyH5FnW1bQnMSi+W19tVhiKkbOBSD3d3js 48jRy2k/MDOBwJP/7Z/8r7kf30D3rj+tg2SqUqdwc/arA7sprSecv1gQN+l86wFAzv6EGLUo5Lr 3Yp+dk1UU2zWjpAYsTmBoLnw/JwDx/tAR2eNUGIjhehqzuwM9yppeIIxWM8Lpq0ypm5ZsA3aXZD wBrNakR0JWUiYgzO02PfGBfvvKn4EUVaPOcnlQWqMFxLSw47YQRnidn25Ssv8yqZEXJLoOlumwI AfSrJQy9dxp1a/LaslURCoNRHssOmAbmtEtOoXeY/55QME5gci893oTLq/lMM2OsGQoqH+POI X-Received: by 2002:a17:903:3d10:b0:295:5d0b:e119 with SMTP id d9443c01a7336-29ec233651fmr48988405ad.26.1765433526149; Wed, 10 Dec 2025 22:12:06 -0800 (PST) X-Google-Smtp-Source: AGHT+IE6fC3G9cRxZnPr7R0wcUAZMWDvoLAxRPfLPw1ivs4Rflap0o6zBIzu42QGY9pF+eM4UFiEAw== X-Received: by 2002:a17:903:3d10:b0:295:5d0b:e119 with SMTP id d9443c01a7336-29ec233651fmr48988055ad.26.1765433525664; Wed, 10 Dec 2025 22:12:05 -0800 (PST) Received: from jiegan-gv.ap.qualcomm.com (tpe-colo-wan-fw-bordernet.qualcomm.com. [103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29eea065186sm11725945ad.89.2025.12.10.22.12.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Dec 2025 22:12:05 -0800 (PST) From: Jie Gan Date: Thu, 11 Dec 2025 14:10:46 +0800 Subject: [PATCH v8 7/8] coresight: tmc: integrate byte-cntr's read_ops with sysfs file_ops Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251211-enable-byte-cntr-for-ctcu-v8-7-3e12ff313191@oss.qualcomm.com> References: <20251211-enable-byte-cntr-for-ctcu-v8-0-3e12ff313191@oss.qualcomm.com> In-Reply-To: <20251211-enable-byte-cntr-for-ctcu-v8-0-3e12ff313191@oss.qualcomm.com> To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang , Mao Jinlong , Bjorn Andersson , Konrad Dybcio Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, Jie Gan X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1765433485; l=3607; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=xJnis8AYP6mUACqX8hrlzR6o4WFt5DY5g2nwBMuPaFg=; b=XZKk6u6O8/W+/NKO3AjRcEidZmfWuImieEybj0q21Sad2eq2N8OitNcpHtzKGjthFpgvrpY9s h1fyVyKmYXdAH0DgyQQqpXNScBCrkDcNTfHx0curg8bHL4Eu37uSgJf X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Authority-Analysis: v=2.4 cv=At7jHe9P c=1 sm=1 tr=0 ts=693a60b6 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=i2GxayCjj04of9N-vEoA:9 a=+jEqtf1s3R9VXZ0wqowq2kgwd+I=:19 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-ORIG-GUID: RAMPRQ2Qwc9RWDsu7Z3rzYrAXxEIZlcO X-Proofpoint-GUID: RAMPRQ2Qwc9RWDsu7Z3rzYrAXxEIZlcO X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjExMDA0MiBTYWx0ZWRfX9bwNUO6PnWxo mMOCKHHh5AfC1fT9s+utHhMUkQfSDtFagcPh1II/rYH4D5dFj5Wh21Lg+EbinDv8a/u1dvO7GLU 538rwepGeziom5D/UmhByxMIuA3iLXhxeBKFinx1e2VFPipDZwqrKqvPx5XYA0TfB9Pd2eZQ2ZW uOk7KR7Wxj+5uxQCUlrI0CCfNgzrz+RKAffMfWeAUBXShS/byTGdD45ulm174ebXTCf+J/JaVBV wu7J3YHRLs3oaMq1BZek+RgrfoJxV8hyV52k/NyVr37Y8gMl8/Fi97gS1UhSX0DTkchZ7xoeAHR GKM63UW/sehghZWPXHzgOvR2a4n4Ai6qaulrzfCMleHB2PO0xdxSZ1YhKOLW+4HaSthBmJGEg1T PQZ1bBqEEctKLLv7ETQy9tp9cPDSng== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-10_03,2025-12-09_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 phishscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512110042 Add code logic to invoke byte-cntr's sysfs_read_ops if the byte-cntr is enabled. Signed-off-by: Jie Gan --- drivers/hwtracing/coresight/coresight-tmc-core.c | 53 ++++++++++++++++++++= +++- 1 file changed, 52 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwt= racing/coresight/coresight-tmc-core.c index 8b0397a77e57..41ac99b35a84 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -31,6 +31,7 @@ =20 #include "coresight-priv.h" #include "coresight-tmc.h" +#include "coresight-ctcu.h" =20 DEFINE_CORESIGHT_DEVLIST(etb_devs, "tmc_etb"); DEFINE_CORESIGHT_DEVLIST(etf_devs, "tmc_etf"); @@ -228,15 +229,47 @@ static int tmc_prepare_crashdata(struct tmc_drvdata *= drvdata) return 0; } =20 +/* Return the byte-cntr's sysfs_read_ops if in use */ +static const struct sysfs_read_ops *tmc_get_byte_cntr_sysfs_ops(struct tmc= _drvdata *drvdata) +{ + struct ctcu_byte_cntr *byte_cntr_data; + struct ctcu_drvdata *ctcu_drvdata; + struct coresight_device *helper; + int port; + + helper =3D coresight_get_helper(drvdata->csdev, CORESIGHT_DEV_SUBTYPE_HEL= PER_CTCU); + if (!helper) + return NULL; + + port =3D coresight_get_in_port(drvdata->csdev, helper); + if (port < 0) + return NULL; + + ctcu_drvdata =3D dev_get_drvdata(helper->dev.parent); + byte_cntr_data =3D &ctcu_drvdata->byte_cntr_data[port]; + if (byte_cntr_data && byte_cntr_data->thresh_val) + return ctcu_drvdata->byte_cntr_sysfs_read_ops; + + return NULL; +} + static int tmc_read_prepare(struct tmc_drvdata *drvdata) { + const struct sysfs_read_ops *byte_cntr_sysfs_read_ops; int ret =3D 0; =20 + byte_cntr_sysfs_read_ops =3D tmc_get_byte_cntr_sysfs_ops(drvdata); + if (byte_cntr_sysfs_read_ops) { + ret =3D byte_cntr_sysfs_read_ops->read_prepare(drvdata); + goto out; + } + if (drvdata->sysfs_ops) ret =3D drvdata->sysfs_ops->read_prepare(drvdata); else ret =3D -EINVAL; =20 +out: if (!ret) dev_dbg(&drvdata->csdev->dev, "TMC read start\n"); =20 @@ -245,13 +278,21 @@ static int tmc_read_prepare(struct tmc_drvdata *drvda= ta) =20 static int tmc_read_unprepare(struct tmc_drvdata *drvdata) { + const struct sysfs_read_ops *byte_cntr_sysfs_read_ops; int ret =3D 0; =20 + byte_cntr_sysfs_read_ops =3D tmc_get_byte_cntr_sysfs_ops(drvdata); + if (byte_cntr_sysfs_read_ops) { + ret =3D byte_cntr_sysfs_read_ops->read_unprepare(drvdata); + goto out; + } + if (drvdata->sysfs_ops) ret =3D drvdata->sysfs_ops->read_unprepare(drvdata); else ret =3D -EINVAL; =20 +out: if (!ret) dev_dbg(&drvdata->csdev->dev, "TMC read end\n"); =20 @@ -277,6 +318,12 @@ static int tmc_open(struct inode *inode, struct file *= file) static ssize_t tmc_get_sysfs_trace(struct tmc_drvdata *drvdata, loff_t pos= , size_t len, char **bufpp) { + const struct sysfs_read_ops *byte_cntr_sysfs_read_ops; + + byte_cntr_sysfs_read_ops =3D tmc_get_byte_cntr_sysfs_ops(drvdata); + if (byte_cntr_sysfs_read_ops) + return byte_cntr_sysfs_read_ops->get_trace_data(drvdata, pos, len, bufpp= ); + if (drvdata->sysfs_ops) return drvdata->sysfs_ops->get_trace_data(drvdata, pos, len, bufpp); =20 @@ -300,7 +347,11 @@ static ssize_t tmc_read(struct file *file, char __user= *data, size_t len, return -EFAULT; } =20 - *ppos +=3D actual; + if (drvdata->reading_node) + drvdata->reading_node->pos +=3D actual; + else + *ppos +=3D actual; + dev_dbg(&drvdata->csdev->dev, "%zu bytes copied\n", actual); =20 return actual; --=20 2.34.1