From patchwork Thu Apr 27 09:00:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Zhang X-Patchwork-Id: 13225272 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63278C77B61 for ; Thu, 27 Apr 2023 09:01:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243243AbjD0JBr (ORCPT ); Thu, 27 Apr 2023 05:01:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243245AbjD0JBo (ORCPT ); Thu, 27 Apr 2023 05:01:44 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8224F4C39; Thu, 27 Apr 2023 02:01:25 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33R7DQZ1011869; Thu, 27 Apr 2023 09:01:07 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=FhAHcwDtUysj4PzwFxSKRxXkvGWqT9EdqmRXLEk4igc=; b=nRS1td6BvzjWJALU2LQopjIpLzAzA4rFvhK/QrGPhDn6ooDUvvjpDtn1l9w4uMIA8+Lo jmDiUoQeXi8TSa6kFd/Op8ivewPwM8Z6aoc+BbcQ4b6s8st9M8k5fN3YaKUlbYvrAnLG 4P+Hp7eHQBrWQg+ZqdTfqQg+1dViQqnKuK6dUIoAAVxX3xxmlTUwT4CXBDZcM9tqlz+Z twRQjArqW16zZcaBOl9e+EzKZ3jxfDk+FTjMqDIBTBF7o/xGPceLRvjmM7g83/sbRZh1 Z2V30Fyle5vYrYjsHyp8qiH4Iak8BLGY6b43tGynU1tPcECfqzJHs7A0AkHLo7El/TUx 9Q== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3q7mfj0819-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Apr 2023 09:01:07 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 33R916i3013335 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Apr 2023 09:01:06 GMT Received: from taozha-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Thu, 27 Apr 2023 02:01:00 -0700 From: Tao Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Konrad Dybcio , Mike Leach , Rob Herring , Krzysztof Kozlowski CC: Tao Zhang , Jinlong Mao , Leo Yan , Greg Kroah-Hartman , , , , , Tingwei Zhang , Yuanfang Zhang , Trilok Soni , Hao Zhang , , Subject: [PATCH v4 02/11] coresight-tpda: Add DSB dataset support Date: Thu, 27 Apr 2023 17:00:28 +0800 Message-ID: <1682586037-25973-3-git-send-email-quic_taozha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1682586037-25973-1-git-send-email-quic_taozha@quicinc.com> References: <1682586037-25973-1-git-send-email-quic_taozha@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: han4fXjtulkgY-vpE-sLrXSmeHBs7NSe X-Proofpoint-ORIG-GUID: han4fXjtulkgY-vpE-sLrXSmeHBs7NSe X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-27_06,2023-04-26_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 mlxscore=0 bulkscore=0 clxscore=1015 spamscore=0 impostorscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304270078 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Read the DSB element size from the device tree. Set the register bit that controls the DSB element size of the corresponding port. Signed-off-by: Tao Zhang --- drivers/hwtracing/coresight/coresight-core.c | 1 + drivers/hwtracing/coresight/coresight-tpda.c | 92 +++++++++++++++++++++++++--- drivers/hwtracing/coresight/coresight-tpda.h | 4 ++ drivers/hwtracing/coresight/coresight-tpdm.c | 2 +- include/linux/coresight.h | 1 + 5 files changed, 90 insertions(+), 10 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 2af416b..f1eacbb 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -1092,6 +1092,7 @@ static int coresight_validate_source(struct coresight_device *csdev, if (subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_PROC && subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE && + subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM && subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS) { dev_err(&csdev->dev, "wrong device subtype in %s\n", function); return -EINVAL; diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c index 8d2b9d2..af9c72f 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -21,6 +21,56 @@ DEFINE_CORESIGHT_DEVLIST(tpda_devs, "tpda"); +/* Search and read element data size from the TPDM node in + * the devicetree. Each input port of TPDA is connected to + * a TPDM. Different TPDM supports different types of dataset, + * and some may support more than one type of dataset. + * Parameter "inport" is used to pass in the input port number + * of TPDA, and it is set to 0 in the recursize call. + * Parameter "parent" is used to pass in the original call. + */ +static int tpda_set_element_size(struct tpda_drvdata *drvdata, + struct coresight_device *csdev, int inport, bool parent) +{ + static int nr_inport; + int i; + static bool tpdm_found; + struct coresight_device *in_csdev; + + if (inport > (TPDA_MAX_INPORTS - 1)) + return -EINVAL; + + if (parent) { + nr_inport = inport; + tpdm_found = false; + } + + for (i = 0; i < csdev->pdata->nr_inconns; i++) { + in_csdev = csdev->pdata->in_conns[i]->src_dev; + if (!in_csdev) + break; + + if (parent) + if (csdev->pdata->in_conns[i]->dest_port != inport) + continue; + + if (in_csdev->subtype.source_subtype + == CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM) { + of_property_read_u8(in_csdev->dev.parent->of_node, + "qcom,dsb-element-size", &drvdata->dsb_esize[nr_inport]); + if (!tpdm_found) + tpdm_found = true; + else + dev_warn(drvdata->dev, + "More than one TPDM is mapped to the TPDA input port %d.\n", + nr_inport); + } + tpda_set_element_size(drvdata, in_csdev, 0, false); + } + + return 0; +} + /* Settings pre enabling port control register */ static void tpda_enable_pre_port(struct tpda_drvdata *drvdata) { @@ -32,26 +82,43 @@ static void tpda_enable_pre_port(struct tpda_drvdata *drvdata) writel_relaxed(val, drvdata->base + TPDA_CR); } -static void tpda_enable_port(struct tpda_drvdata *drvdata, int port) +static int tpda_enable_port(struct tpda_drvdata *drvdata, int port) { u32 val; val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port)); + /* + * Configure aggregator port n DSB data set element size + * Set the bit to 0 if the size is 32 + * Set the bit to 1 if the size is 64 + */ + if (drvdata->dsb_esize[port] == 32) + val &= ~TPDA_Pn_CR_DSBSIZE; + else if (drvdata->dsb_esize[port] == 64) + val |= TPDA_Pn_CR_DSBSIZE; + else + return -EINVAL; + /* Enable the port */ val |= TPDA_Pn_CR_ENA; writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); + + return 0; } -static void __tpda_enable(struct tpda_drvdata *drvdata, int port) +static int __tpda_enable(struct tpda_drvdata *drvdata, int port) { + int ret; + CS_UNLOCK(drvdata->base); if (!drvdata->csdev->enable) tpda_enable_pre_port(drvdata); - tpda_enable_port(drvdata, port); - + ret = tpda_enable_port(drvdata, port); CS_LOCK(drvdata->base); + + return ret; } static int tpda_enable(struct coresight_device *csdev, @@ -59,16 +126,23 @@ static int tpda_enable(struct coresight_device *csdev, struct coresight_connection *out) { struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + int ret; + + ret = tpda_set_element_size(drvdata, csdev, in->dest_port, true); + if (ret) + return ret; spin_lock(&drvdata->spinlock); - if (atomic_read(&in->dest_refcnt) == 0) + if (atomic_read(&in->dest_refcnt) == 0) { __tpda_enable(drvdata, in->dest_port); + if (!ret) { + atomic_inc(&in->dest_refcnt); + dev_dbg(drvdata->dev, "TPDA inport %d enabled.\n", in->dest_port); + } + } - atomic_inc(&in->dest_refcnt); spin_unlock(&drvdata->spinlock); - - dev_dbg(drvdata->dev, "TPDA inport %d enabled.\n", in->dest_port); - return 0; + return ret; } static void __tpda_disable(struct tpda_drvdata *drvdata, int port) diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtracing/coresight/coresight-tpda.h index 0399678..7332e9c 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.h +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -10,6 +10,8 @@ #define TPDA_Pn_CR(n) (0x004 + (n * 4)) /* Aggregator port enable bit */ #define TPDA_Pn_CR_ENA BIT(0) +/* Aggregator port DSB data set element size bit */ +#define TPDA_Pn_CR_DSBSIZE BIT(8) #define TPDA_MAX_INPORTS 32 @@ -23,6 +25,7 @@ * @csdev: component vitals needed by the framework. * @spinlock: lock for the drvdata value. * @enable: enable status of the component. + * @dsb_esize: DSB element size, it must be 32 or 64. */ struct tpda_drvdata { void __iomem *base; @@ -30,6 +33,7 @@ struct tpda_drvdata { struct coresight_device *csdev; spinlock_t spinlock; u8 atid; + u8 dsb_esize[TPDA_MAX_INPORTS]; }; #endif /* _CORESIGHT_CORESIGHT_TPDA_H */ diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index f4854af..ba1867f 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -205,7 +205,7 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) if (!desc.name) return -ENOMEM; desc.type = CORESIGHT_DEV_TYPE_SOURCE; - desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS; + desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM; desc.ops = &tpdm_cs_ops; desc.pdata = adev->dev.platform_data; desc.dev = &adev->dev; diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 225a5fa..6563896 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -60,6 +60,7 @@ enum coresight_dev_subtype_source { CORESIGHT_DEV_SUBTYPE_SOURCE_PROC, CORESIGHT_DEV_SUBTYPE_SOURCE_BUS, CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE, + CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM, CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS, };