From patchwork Thu Jan 19 07:41:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Zhang X-Patchwork-Id: 645187 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 04F65C00A5A for ; Thu, 19 Jan 2023 07:44:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230179AbjASHoN (ORCPT ); Thu, 19 Jan 2023 02:44:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229975AbjASHnc (ORCPT ); Thu, 19 Jan 2023 02:43:32 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B34876797D; Wed, 18 Jan 2023 23:42:54 -0800 (PST) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30J7atJp022944; Thu, 19 Jan 2023 07:42:39 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=BjGlUuG85ZIxBon+F2anCaKi/MvRI7WMd/RYZPpvb4k=; b=A2XgVoZuIXRR3kdlwboLaGprKZpyLCLXf/pgZdNushHSPHc8WBh1BvZzfh4qLNbhq+Tp ZhC6xTcrQO87/tsg4c5DB2+dXy84/9Du4ZvhbELKitCokHLQAd8Ie9+W06E+1HXm+7Xn WuZaef9OaduRJFSlokdAG9+CgOeQWjxDKi73sYBkMA+18o2I2B6mLnseKPAW+xk18R3j vs834P6pC2obRm3NKLtbbte1U/bEChHaG5Bl5SAUfmU+F1CdN+QiKy8K5KxYEqgebDzu 9nmnqJL62Rmzs/FpCBkHhKGfXRsWIHL+MavL8agxuW56zz1dp/Knxhww9mHqOJNjpZPY Og== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3n6xktggpb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 19 Jan 2023 07:42:39 +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 30J7gcGZ029521 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 19 Jan 2023 07:42:38 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 15.2.986.36; Wed, 18 Jan 2023 23:42:33 -0800 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 , , , Tao Zhang Subject: [PATCH v2 6/9] coresight-tpdm: Add node to set dsb programming mode Date: Thu, 19 Jan 2023 15:41:42 +0800 Message-ID: <1674114105-16651-7-git-send-email-quic_taozha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1674114105-16651-1-git-send-email-quic_taozha@quicinc.com> References: <1674114105-16651-1-git-send-email-quic_taozha@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) 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: TdywzO3c3VuGD7Brwqu3Q7yYIn6fm3Xy X-Proofpoint-GUID: TdywzO3c3VuGD7Brwqu3Q7yYIn6fm3Xy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.923,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-18_05,2023-01-18_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 clxscore=1015 spamscore=0 mlxlogscore=999 lowpriorityscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301190062 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add node to set and show programming mode for TPDM DSB subunit. Once the DSB programming mode is set, it will be written to the register DSB_CR. Bit[10:9] of the DSB_CR register is used to set the DSB test mode. Signed-off-by: Tao Zhang Signed-off-by: Tao Zhang --- drivers/hwtracing/coresight/coresight-tpdm.c | 45 +++++++++++++++++++++++++++- drivers/hwtracing/coresight/coresight-tpdm.h | 12 ++++++++ 2 files changed, 56 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index 1dbb6c4..9126a37 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -4,6 +4,7 @@ */ #include +#include #include #include #include @@ -38,7 +39,7 @@ static umode_t tpdm_dsb_is_visible(struct kobject *kobj, static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) { - u32 val; + u32 val, mode; val = readl_relaxed(drvdata->base + TPDM_DSB_TIER); /* Set trigger timestamp */ @@ -58,6 +59,19 @@ static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata) /* Set the enable bit of DSB control register to 1 */ val = readl_relaxed(drvdata->base + TPDM_DSB_CR); + /* Set the cycle accurate mode */ + mode = TPDM_DSB_MODE_CYCACC(drvdata->dsb->mode); + val &= ~TPDM_DSB_TEST_MODE; + val |= FIELD_PREP(TPDM_DSB_TEST_MODE, mode); + /* Set the byte lane for high-performance mode */ + mode = TPDM_DSB_MODE_HPBYTESEL(drvdata->dsb->mode); + val &= ~TPDM_DSB_HPSEL; + val |= FIELD_PREP(TPDM_DSB_HPSEL, mode); + /* Set the performance mode */ + if (drvdata->dsb->mode & TPDM_DSB_MODE_PERF) + val |= TPDM_DSB_MODE; + else + val &= ~TPDM_DSB_MODE; val |= TPDM_DSB_CR_ENA; writel_relaxed(val, drvdata->base + TPDM_DSB_CR); } @@ -257,6 +271,34 @@ static struct attribute_group tpdm_attr_grp = { .attrs = tpdm_attrs, }; +static ssize_t dsb_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + + return sysfs_emit(buf, "%lx\n", + (unsigned long)drvdata->dsb->mode); +} + +static ssize_t dsb_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); + unsigned long val; + + if ((kstrtoul(buf, 0, &val)) || val < 0) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + drvdata->dsb->mode = val & TPDM_MODE_ALL; + spin_unlock(&drvdata->spinlock); + return size; +} +static DEVICE_ATTR_RW(dsb_mode); + static ssize_t dsb_trig_type_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -327,6 +369,7 @@ static ssize_t dsb_trig_ts_store(struct device *dev, } static DEVICE_ATTR_RW(dsb_trig_ts); static struct attribute *tpdm_dsb_attrs[] = { + &dev_attr_dsb_mode.attr, &dev_attr_dsb_trig_ts.attr, &dev_attr_dsb_trig_type.attr, NULL, diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index 3ad1be5..b3ecb9f 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.h +++ b/drivers/hwtracing/coresight/coresight-tpdm.h @@ -19,6 +19,16 @@ #define TPDM_DSB_XTRIG_TSENAB BIT(1) /* Enable bit for DSB subunit trigger type */ #define TPDM_DSB_TRIG_TYPE BIT(12) +/* Enable bit for DSB subunit perfmance mode */ +#define TPDM_DSB_MODE BIT(1) + +/* DSB programming modes */ +#define TPDM_DSB_MODE_CYCACC(val) (val & GENMASK(2, 0)) +#define TPDM_DSB_MODE_PERF BIT(3) +#define TPDM_DSB_MODE_HPBYTESEL(val) (val & GENMASK(8, 4)) +#define TPDM_MODE_ALL (0xFFFFFFF) +#define TPDM_DSB_TEST_MODE GENMASK(11, 9) +#define TPDM_DSB_HPSEL GENMASK(6, 2) /* TPDM integration test registers */ #define TPDM_ITATBCNTRL (0xEF0) @@ -48,10 +58,12 @@ /** * struct dsb_dataset - specifics associated to dsb dataset + * @mode: DSB programming mode * @trig_ts: Enable/Disable trigger timestamp. * @trig_type: Enable/Disable trigger type. */ struct dsb_dataset { + u32 mode; bool trig_ts; bool trig_type; };