From nobody Wed Nov 27 15:29:59 2024 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 B476A1F4738; Thu, 10 Oct 2024 07:39:56 +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=1728545998; cv=none; b=oFJbMVcXFfVOCUe+C282V1+/ia0/lMpF9OrA8bUq8iEtEgqixugh7Bk9+UIOSk4Gl5WBq9R8lFTdSZjN9PCvuObcJDD7sDklO2JJs5ELNuwjZ7LlkfQ3bEhlBahvM3NbSoySswnAIXilnfq6V3GOJDQF4n2q3agG7TINDkyhTRo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728545998; c=relaxed/simple; bh=Pu78TaX7athCMV6gdXBYKGaZXXrIfthuREwd33mhA7U=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=b8hLa8RXwYRl6HvxDWeI+9S/ob2DH3OP8gZGvFag/EAoUsuaUay2h2Mx3ldYiJZjS7+A7qNOMTsfKQQMtHtSlf4rYGiBm0Q7tVp00xnTF/vx+Nh04RfrvddDNcHSeT1jKE5eKeLzdUUDZXLxkZ/LvQR494yEvuWi9lIymwxfZBA= 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=kFWFI6iR; 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="kFWFI6iR" 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 49A4ghSQ027240; Thu, 10 Oct 2024 07:39:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= 90/UnCBKzemb9epZrSwpJb3PhODL07HAQIPEsMtfYB8=; b=kFWFI6iRtC6Tr69G dlnOhPusZOmpd+6Hr9N8cFNnMcszhZo946tMJSQN7JDfSSawE9VQpO3YbFQhMNcz NkEMkQJM+fV6Ip8aTN3csShXKEGYHP7AwNTTDHMrzAA/i4bhKhszQNrPQ7rpKb5T ZiGSgrY4rwLBZjx3gdDb9uElyWkdre9YQSsI+dgVOjsytRu6SdmU397XjY0tdsas QDjT89fKV3o82+PyiQvOKfT6RJLbtjd+OPDEBmyqmAb9gu9LiF9sjzhKQgLo9b0V Eajr0RcCaICQ/HWT2Er4c8ep6dPuCdtcMjbekWLBxHksI9HSKsBnAD2ortjWhUFp tNge4Q== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 424cy7j6my-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 10 Oct 2024 07:39:36 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA05.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49A7dZJU011935 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 10 Oct 2024 07:39:35 GMT Received: from 3b5b8f7e4007.qualcomm.com (10.49.16.6) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 10 Oct 2024 00:39:34 -0700 From: Songwei Chai To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" , Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: Songwei Chai , , , , , Subject: [PATCH v2 4/7] coresight-tgu: Add TGU decode support Date: Thu, 10 Oct 2024 15:39:12 +0800 Message-ID: <20241010073917.16023-5-quic_songchai@quicinc.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241010073917.16023-1-quic_songchai@quicinc.com> References: <20241010073917.16023-1-quic_songchai@quicinc.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-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: yobNb4WkoIWn6Kh2BWpijauNKgwzSEMg X-Proofpoint-GUID: yobNb4WkoIWn6Kh2BWpijauNKgwzSEMg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 adultscore=0 mlxscore=0 lowpriorityscore=0 suspectscore=0 spamscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 malwarescore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410100049 Content-Type: text/plain; charset="utf-8" Decoding is when all the potential pieces for creating a trigger are brought together for a given step. Example - there may be a counter keeping track of some occurrences and a priority-group that is being used to detect a pattern on the sense inputs. These 2 inputs to condition_decode must be programmed, for a given step, to establish the condition for the trigger, or movement to another step. Signed-off-by: Songwei Chai --- .../testing/sysfs-bus-coresight-devices-tgu | 7 ++ drivers/hwtracing/coresight/coresight-tgu.c | 113 ++++++++++++++++-- drivers/hwtracing/coresight/coresight-tgu.h | 29 ++++- 3 files changed, 136 insertions(+), 13 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu b/Do= cumentation/ABI/testing/sysfs-bus-coresight-devices-tgu index 599908a88e80..e2c66d545912 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tgu @@ -14,3 +14,10 @@ KernelVersion 6.10 Contact: Jinlong Mao (QUIC) , Sam Chai (Q= UIC) Description: (RW) Set/Get the sensed siganal with specific step and pri= ority for TGU. + +What: /sys/bus/coresight/devices//step[0:7]_condition_= decode/reg[0:3] +Date: August 2024 +KernelVersion 6.10 +Contact: Jinlong Mao (QUIC) , Sam Chai (Q= UIC) +Description: + (RW) Set/Get the decode mode with specific step for TGU. diff --git a/drivers/hwtracing/coresight/coresight-tgu.c b/drivers/hwtracin= g/coresight/coresight-tgu.c index 20244c178586..b21283c89373 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.c +++ b/drivers/hwtracing/coresight/coresight-tgu.c @@ -22,9 +22,21 @@ static int calculate_array_location(struct tgu_drvdata *= drvdata, int step_index, { int ret =3D -EINVAL; =20 - ret =3D operation_index * (drvdata->max_step) * - (drvdata->max_reg) + step_index * (drvdata->max_reg) - + reg_index; + switch (operation_index) { + case TGU_PRIORITY0: + case TGU_PRIORITY1: + case TGU_PRIORITY2: + case TGU_PRIORITY3: + ret =3D operation_index * (drvdata->max_step) * + (drvdata->max_reg) + step_index * (drvdata->max_reg) + + reg_index; + break; + case TGU_CONDITION_DECODE: + ret =3D step_index * (drvdata->max_condition_decode) + reg_index; + break; + default: + break; + } =20 return ret; } @@ -36,10 +48,23 @@ static ssize_t tgu_dataset_show(struct device *dev, struct tgu_attribute *tgu_attr =3D container_of(attr, struct tgu_attribute, attr); =20 - return sysfs_emit(buf, "0x%x\n", - drvdata->value_table->priority[calculate_array_location( + switch (tgu_attr->operation_index) { + case TGU_PRIORITY0: + case TGU_PRIORITY1: + case TGU_PRIORITY2: + case TGU_PRIORITY3: + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->priority[calculate_array_location( drvdata, tgu_attr->step_index, tgu_attr->operation_index, tgu_attr->reg_num)]); + case TGU_CONDITION_DECODE: + return sysfs_emit(buf, "0x%x\n", + drvdata->value_table->condition_decode[calculate_array_location( + drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)]); + + } + return -EINVAL; =20 } =20 @@ -58,11 +83,25 @@ static ssize_t tgu_dataset_store(struct device *dev, return ret; =20 guard(spinlock)(&tgu_drvdata->spinlock); - tgu_drvdata->value_table->priority[calculate_array_location( - tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, - tgu_attr->reg_num)] =3D val; - ret =3D size; - + switch (tgu_attr->operation_index) { + case TGU_PRIORITY0: + case TGU_PRIORITY1: + case TGU_PRIORITY2: + case TGU_PRIORITY3: + tgu_drvdata->value_table->priority[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)] =3D val; + ret =3D size; + break; + case TGU_CONDITION_DECODE: + tgu_drvdata->value_table->condition_decode[calculate_array_location( + tgu_drvdata, tgu_attr->step_index, tgu_attr->operation_index, + tgu_attr->reg_num)] =3D val; + ret =3D size; + break; + default: + break; + } return ret; } =20 @@ -79,8 +118,23 @@ static umode_t tgu_node_visible(struct kobject *kobject= , struct attribute *attr, container_of(dev_attr, struct tgu_attribute, attr); =20 if (tgu_attr->step_index < drvdata->max_step) { - ret =3D (tgu_attr->reg_num < drvdata->max_reg) ? - attr->mode : 0; + switch (tgu_attr->operation_index) { + case TGU_PRIORITY0: + case TGU_PRIORITY1: + case TGU_PRIORITY2: + case TGU_PRIORITY3: + ret =3D (tgu_attr->reg_num < drvdata->max_reg) ? + attr->mode : 0; + break; + case TGU_CONDITION_DECODE: + ret =3D (tgu_attr->reg_num < + drvdata->max_condition_decode) ? + attr->mode : 0; + break; + default: + break; + } + return ret; } return SYSFS_GROUP_INVISIBLE; @@ -103,6 +157,17 @@ static void tgu_write_all_hw_regs(struct tgu_drvdata *= drvdata) } } =20 + for (i =3D 0; i < drvdata->max_step; i++) { + for (j =3D 0; j < drvdata->max_condition_decode; j++) { + tgu_writel(drvdata, + drvdata->value_table + ->condition_decode[calculate_array_location( + drvdata, i, + TGU_CONDITION_DECODE, j)], + CONDITION_DECODE_STEP(i, j)); + } + } + /* Enable TGU to program the triggers */ tgu_writel(drvdata, 1, TGU_CONTROL); CS_LOCK(drvdata->base); @@ -245,6 +310,14 @@ static const struct attribute_group *tgu_attr_groups[]= =3D { PRIORITY_ATTRIBUTE_GROUP_INIT(7, 1), PRIORITY_ATTRIBUTE_GROUP_INIT(7, 2), PRIORITY_ATTRIBUTE_GROUP_INIT(7, 3), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(0), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(1), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(2), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(3), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(4), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(5), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(6), + CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(7), NULL, }; =20 @@ -289,6 +362,13 @@ static int tgu_probe(struct amba_device *adev, const s= truct amba_id *id) if (ret) return -EINVAL; =20 + ret =3D of_property_read_u32(adev->dev.of_node, "tgu-conditions", + &drvdata->max_condition); + if (ret) + return -EINVAL; + + drvdata->max_condition_decode =3D drvdata->max_condition; + drvdata->value_table =3D devm_kzalloc(dev, sizeof(*drvdata->value_table), GFP_KERNEL); if (!drvdata->value_table) @@ -303,6 +383,15 @@ static int tgu_probe(struct amba_device *adev, const s= truct amba_id *id) if (!drvdata->value_table->priority) return -ENOMEM; =20 + drvdata->value_table->condition_decode =3D devm_kzalloc( + dev, + drvdata->max_condition_decode * drvdata->max_step * + sizeof(*(drvdata->value_table->condition_decode)), + GFP_KERNEL); + + if (!drvdata->value_table->condition_decode) + return -ENOMEM; + drvdata->enable =3D false; desc.type =3D CORESIGHT_DEV_TYPE_HELPER; desc.pdata =3D adev->dev.platform_data; diff --git a/drivers/hwtracing/coresight/coresight-tgu.h b/drivers/hwtracin= g/coresight/coresight-tgu.h index 8d7ea0516ad1..243a22098370 100644 --- a/drivers/hwtracing/coresight/coresight-tgu.h +++ b/drivers/hwtracing/coresight/coresight-tgu.h @@ -46,6 +46,9 @@ #define PRIORITY_REG_STEP(step, priority, reg)\ (0x0074 + 0x60 * priority + 0x4 * reg + 0x1D8 * step) =20 +#define CONDITION_DECODE_STEP(step, decode) \ + (0x0050 + 0x4 * decode + 0x1D8 * step) + #define tgu_dataset_ro(name, step_index, type, reg_num) \ (&((struct tgu_attribute[]){ { \ __ATTR(name, 0444, tgu_dataset_show, NULL), \ @@ -66,6 +69,9 @@ tgu_dataset_rw(reg##reg_num, step_index, TGU_PRIORITY##priority, \ reg_num) =20 +#define STEP_DECODE(step_index, reg_num) \ + tgu_dataset_rw(reg##reg_num, step_index, TGU_CONDITION_DECODE, reg_num) + #define STEP_PRIORITY_LIST(step_index, priority) \ {STEP_PRIORITY(step_index, 0, priority), \ STEP_PRIORITY(step_index, 1, priority), \ @@ -88,6 +94,14 @@ NULL \ } =20 +#define STEP_DECODE_LIST(n) \ + {STEP_DECODE(n, 0), \ + STEP_DECODE(n, 1), \ + STEP_DECODE(n, 2), \ + STEP_DECODE(n, 3), \ + NULL \ + } + #define PRIORITY_ATTRIBUTE_GROUP_INIT(step, priority)\ (&(const struct attribute_group){\ .attrs =3D (struct attribute*[])STEP_PRIORITY_LIST(step, priority),\ @@ -95,11 +109,19 @@ .name =3D "step" #step "_priority" #priority \ }) =20 +#define CONDITION_DECODE_ATTRIBUTE_GROUP_INIT(step)\ + (&(const struct attribute_group){\ + .attrs =3D (struct attribute*[])STEP_DECODE_LIST(step),\ + .is_visible =3D tgu_node_visible,\ + .name =3D "step" #step "_condition_decode" \ + }) + enum operation_index { TGU_PRIORITY0, TGU_PRIORITY1, TGU_PRIORITY2, - TGU_PRIORITY3 + TGU_PRIORITY3, + TGU_CONDITION_DECODE =20 }; =20 @@ -115,6 +137,7 @@ struct tgu_attribute { =20 struct value_table { unsigned int *priority; + unsigned int *condition_decode; }; =20 /** @@ -127,6 +150,8 @@ struct value_table { * @value_table: Store given value based on relevant parameters. * @max_reg: Maximum number of registers * @max_step: Maximum step size + * @max_condition: Maximum number of condition + * @max_condition_decode: Maximum number of condition_decode * * This structure defines the data associated with a TGU device, including= its base * address, device pointers, clock, spinlock for synchronization, trigger = data pointers, @@ -141,6 +166,8 @@ struct tgu_drvdata { struct value_table *value_table; int max_reg; int max_step; + int max_condition; + int max_condition_decode; }; =20 #endif