From patchwork Mon Jun 12 07:07:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Tao Zhang X-Patchwork-Id: 13275754 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 77688C7EE43 for ; Mon, 12 Jun 2023 07:59:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233034AbjFLH72 (ORCPT ); Mon, 12 Jun 2023 03:59:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233428AbjFLH7E (ORCPT ); Mon, 12 Jun 2023 03:59:04 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02055114; Mon, 12 Jun 2023 00:58:26 -0700 (PDT) Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35C6jEID011148; Mon, 12 Jun 2023 07:08:40 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 : content-transfer-encoding; s=qcppdkim1; bh=KNIc+nUsv7BYGi6SdukXxKYIE0hi4LqHfnO0XWDU1Ds=; b=PIYj5GtrimPu9KxkXtPCV6BAELhMk1vTSMv6orIMPW2YsxVjs6UKKZu+Ho5S3ql8wrne VJ7qw1n5JATgQW9hFgJivc3jwJpYdDjc6Y4HZsrCpQctpQOwUv7Bzdb2DE/A+zEFF3+y isQ40MeUlY/JEn7xWEp2Nyd+r2WBw16245LMLFYsILSVY+JYB2mzHF1Twr6GGAKyANo4 d5PQSmTFy4Yu8Bi79GjMSVFq4SWU8QzWtKXinE1TypBdEwgyDrodCqzmdcsNtDIBBG+S SSzAtIzaAC2XcNmVbAB/RMfopaoPy1FmkH7Vg6QD+GmTngRfisGzlzzlApjbIQwLKZdf Wg== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3r4hxnthxn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Jun 2023 07:08:40 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 35C78dsj014456 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Jun 2023 07:08:39 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; Mon, 12 Jun 2023 00:08:34 -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 v5 05/13] coresight-tpdm: Initialize DSB subunit configuration Date: Mon, 12 Jun 2023 15:07:38 +0800 Message-ID: <1686553666-5811-6-git-send-email-quic_taozha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1686553666-5811-1-git-send-email-quic_taozha@quicinc.com> References: <1686553666-5811-1-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-ORIG-GUID: Nw_2YqsTDOcT96qpWo_KYaaY2dV6hC6a X-Proofpoint-GUID: Nw_2YqsTDOcT96qpWo_KYaaY2dV6hC6a X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-12_04,2023-06-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 adultscore=0 suspectscore=0 mlxscore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 spamscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306120060 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org DSB is used for monitoring “events”. Events are something that occurs at some point in time. It could be a state decode, the act of writing/reading a particular address, a FIFO being empty, etc. This decoding of the event desired is done outside TPDM. DSB subunit need to be configured in enablement and disablement. A struct that specifics associated to dsb dataset is needed. It saves the configuration and parameters of the dsb datasets. This change is to add this struct and initialize the configuration of DSB subunit. Signed-off-by: Tao Zhang --- drivers/hwtracing/coresight/coresight-tpdm.c | 55 ++++++++++++++++++++++++++-- drivers/hwtracing/coresight/coresight-tpdm.h | 18 +++++++++ 2 files changed, 69 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index abaff0b..52aa48a6 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -20,17 +20,46 @@ DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm"); +static void tpdm_reset_datasets(struct tpdm_drvdata *drvdata) +{ + if (drvdata->datasets & TPDM_PIDR0_DS_DSB) { + memset(drvdata->dsb, 0, sizeof(struct dsb_dataset)); + + drvdata->dsb->trig_ts = true; + drvdata->dsb->trig_type = false; + } +} + static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) { u32 val; - /* Set the enable bit of DSB control register to 1 */ + val = readl_relaxed(drvdata->base + TPDM_DSB_TIER); + /* Set trigger timestamp */ + if (drvdata->dsb->trig_ts) + val |= TPDM_DSB_TIER_XTRIG_TSENAB; + else + val &= ~TPDM_DSB_TIER_XTRIG_TSENAB; + writel_relaxed(val, drvdata->base + TPDM_DSB_TIER); + val = readl_relaxed(drvdata->base + TPDM_DSB_CR); + /* Set trigger type */ + if (drvdata->dsb->trig_type) + val |= TPDM_DSB_CR_TRIG_TYPE; + else + val &= ~TPDM_DSB_CR_TRIG_TYPE; + /* Set the enable bit of DSB control register to 1 */ val |= TPDM_DSB_CR_ENA; writel_relaxed(val, drvdata->base + TPDM_DSB_CR); } -/* TPDM enable operations */ +/* TPDM enable operations + * The TPDM or Monitor serves as data collection component for various + * dataset types. It covers Basic Counts(BC), Tenure Counts(TC), + * Continuous Multi-Bit(CMB), Multi-lane CMB(MCMB) and Discrete Single + * Bit(DSB). This function will initialize the configuration according + * to the dataset type supported by the TPDM. + */ static void __tpdm_enable(struct tpdm_drvdata *drvdata) { CS_UNLOCK(drvdata->base); @@ -110,13 +139,24 @@ static const struct coresight_ops tpdm_cs_ops = { .source_ops = &tpdm_source_ops, }; -static void tpdm_init_default_data(struct tpdm_drvdata *drvdata) +static int tpdm_datasets_setup(struct tpdm_drvdata *drvdata) { u32 pidr; /* Get the datasets present on the TPDM. */ pidr = readl_relaxed(drvdata->base + CORESIGHT_PERIPHIDR0); drvdata->datasets |= pidr & GENMASK(TPDM_DATASETS - 1, 0); + + if (drvdata->datasets & TPDM_PIDR0_DS_DSB) { + if (!drvdata->dsb) { + drvdata->dsb = devm_kzalloc(drvdata->dev, + sizeof(*drvdata->dsb), GFP_KERNEL); + if (!drvdata->dsb) + return -ENOMEM; + } + } + + return 0; } /* @@ -179,6 +219,7 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) struct coresight_platform_data *pdata; struct tpdm_drvdata *drvdata; struct coresight_desc desc = { 0 }; + int ret; pdata = coresight_get_platform_data(dev); if (IS_ERR(pdata)) @@ -198,6 +239,12 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) drvdata->base = base; + ret = tpdm_datasets_setup(drvdata); + if (ret) + return ret; + + tpdm_reset_datasets(drvdata); + /* Set up coresight component description */ desc.name = coresight_alloc_device_name(&tpdm_devs, dev); if (!desc.name) @@ -214,7 +261,7 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) return PTR_ERR(drvdata->csdev); spin_lock_init(&drvdata->spinlock); - tpdm_init_default_data(drvdata); + /* Decrease pm refcount when probe is done.*/ pm_runtime_put(&adev->dev); diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index 5438540..92c34cd 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.h +++ b/drivers/hwtracing/coresight/coresight-tpdm.h @@ -11,8 +11,14 @@ /* DSB Subunit Registers */ #define TPDM_DSB_CR (0x780) +#define TPDM_DSB_TIER (0x784) + /* Enable bit for DSB subunit */ #define TPDM_DSB_CR_ENA BIT(0) +/* Enable bit for DSB subunit trigger type */ +#define TPDM_DSB_CR_TRIG_TYPE BIT(12) +/* Enable bit for DSB subunit trigger timestamp */ +#define TPDM_DSB_TIER_XTRIG_TSENAB BIT(1) /* TPDM integration test registers */ #define TPDM_ITATBCNTRL (0xEF0) @@ -41,6 +47,16 @@ #define TPDM_PIDR0_DS_DSB BIT(1) /** + * struct dsb_dataset - specifics associated to dsb dataset + * @trig_ts: Enable/Disable trigger timestamp. + * @trig_type: Enable/Disable trigger type. + */ +struct dsb_dataset { + bool trig_ts; + bool trig_type; +}; + +/** * struct tpdm_drvdata - specifics associated to an TPDM component * @base: memory mapped base address for this component. * @dev: The device entity associated to this component. @@ -48,6 +64,7 @@ * @spinlock: lock for the drvdata value. * @enable: enable status of the component. * @datasets: The datasets types present of the TPDM. + * @dsb Specifics associated to an TPDM component. */ struct tpdm_drvdata { @@ -57,6 +74,7 @@ struct tpdm_drvdata { spinlock_t spinlock; bool enable; unsigned long datasets; + struct dsb_dataset *dsb; }; #endif /* _CORESIGHT_CORESIGHT_TPDM_H */