From patchwork Fri Jan 5 05:58:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linu Cherian X-Patchwork-Id: 760320 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) (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 710D7566A; Fri, 5 Jan 2024 05:59:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=marvell.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="MCeSAryg" Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 4054bIio004588; Thu, 4 Jan 2024 21:59:28 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= pfpt0220; bh=baXDyzolEU1XhD3nj71BnVJyvVVY9rCyNXB2T01ERLE=; b=MCe SArygOthrCccvXmfLGkHznHsRCjXAbUUfETOZC8MldfmKMKuCQkwTHTZsZP6Qh9o vVPJ268R+bKTmtvaFd7bqyqOsmIflhFNlm8FUVnYF0xYQ9g//UEQ2vZgAKsX1AMG gCtkKUTfU18fU4A5f87kfYSA/Wo0gDMVR7vIj9sAGgD0xTaDX9/3TjFa6UJ9Sjqx aREuFWkbSURXSHxRduRPDuMd/3tvtyg32sHHGWE7HuruQ+ln0Q6aLlOAFrWV9dHG wgFBdqWGQsuH+EH6XznQc6f3MCznu+u46mQ1+pGsFZ7Or0bBi7HZ+CzOslPiG6CK zG1jshRirpdaCZVN4Kw== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3veaw0060b-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Thu, 04 Jan 2024 21:59:28 -0800 (PST) Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Thu, 4 Jan 2024 21:59:26 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Thu, 4 Jan 2024 21:59:25 -0800 Received: from virtx40.. (unknown [10.28.34.196]) by maili.marvell.com (Postfix) with ESMTP id E3F433F704F; Thu, 4 Jan 2024 21:59:21 -0800 (PST) From: Linu Cherian To: , , , CC: , , , , , , , , , Linu Cherian Subject: [PATCH v6 6/7] coresight: tmc: Stop trace capture on FlIn Date: Fri, 5 Jan 2024 11:28:39 +0530 Message-ID: <20240105055840.1977897-7-lcherian@marvell.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240105055840.1977897-1-lcherian@marvell.com> References: <20240105055840.1977897-1-lcherian@marvell.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-GUID: 1kPcC4xzukVtz0oVF1wV1SqljHNTxHrj X-Proofpoint-ORIG-GUID: 1kPcC4xzukVtz0oVF1wV1SqljHNTxHrj X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 Configure TMC ETR and ETF to flush and stop trace capture on FlIn event. As a side effect, do manual flush only if auto flush fails. Signed-off-by: Linu Cherian --- Changelog from v5: * No changes drivers/hwtracing/coresight/coresight-tmc-etf.c | 10 ++++++++-- drivers/hwtracing/coresight/coresight-tmc-etr.c | 10 ++++++++-- drivers/hwtracing/coresight/coresight-tmc.h | 3 +++ 3 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 72c2315f4e23..57a9a9300d36 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -34,7 +34,7 @@ static int __tmc_etb_enable_hw(struct tmc_drvdata *drvdata) writel_relaxed(TMC_MODE_CIRCULAR_BUFFER, drvdata->base + TMC_MODE); writel_relaxed(TMC_FFCR_EN_FMT | TMC_FFCR_EN_TI | TMC_FFCR_FON_FLIN | TMC_FFCR_FON_TRIG_EVT | - TMC_FFCR_TRIGON_TRIGIN, + TMC_FFCR_TRIGON_TRIGIN | TMC_FFCR_STOP_ON_FLUSH, drvdata->base + TMC_FFCR); writel_relaxed(drvdata->trigger_cntr, drvdata->base + TMC_TRG); @@ -615,7 +615,13 @@ static int tmc_panic_sync_etf(struct coresight_device *csdev) if (val != TMC_MODE_CIRCULAR_BUFFER) goto out; - tmc_flush_and_stop(drvdata); + val = readl(drvdata->base + TMC_FFSR); + /* Do manual flush and stop only if its not auto-stopped */ + if (!(val & TMC_FFSR_FT_STOPPED)) { + dev_info(&csdev->dev, + "%s: Triggering manual flush\n", __func__); + tmc_flush_and_stop(drvdata); + } /* Sync registers from hardware to metadata region */ mdata->sts = csdev_access_relaxed_read32(csa, TMC_STS); diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index ab7521bbb2f5..4b3c7ec7f62b 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1113,7 +1113,7 @@ static int __tmc_etr_enable_hw(struct tmc_drvdata *drvdata) writel_relaxed(TMC_FFCR_EN_FMT | TMC_FFCR_EN_TI | TMC_FFCR_FON_FLIN | TMC_FFCR_FON_TRIG_EVT | - TMC_FFCR_TRIGON_TRIGIN, + TMC_FFCR_TRIGON_TRIGIN | TMC_FFCR_STOP_ON_FLUSH, drvdata->base + TMC_FFCR); writel_relaxed(drvdata->trigger_cntr, drvdata->base + TMC_TRG); tmc_enable_hw(drvdata); @@ -1846,7 +1846,13 @@ static int tmc_panic_sync_etr(struct coresight_device *csdev) if (!(val & TMC_CTL_CAPT_EN)) goto out; - tmc_flush_and_stop(drvdata); + val = readl(drvdata->base + TMC_FFSR); + /* Do manual flush and stop only if its not auto-stopped */ + if (!(val & TMC_FFSR_FT_STOPPED)) { + dev_info(&csdev->dev, + "%s: Triggering manual flush\n", __func__); + tmc_flush_and_stop(drvdata); + } /* Sync registers from hardware to metadata region */ mdata->size = csdev_access_relaxed_read32(csa, TMC_RSZ); diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index 6e1e910d5ea4..cf9313b302c7 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -77,6 +77,9 @@ #define TMC_AXICTL_AXCACHE_OS (0xf << 2) #define TMC_AXICTL_ARCACHE_OS (0xf << 16) +/* TMC_FFSR - 0x300 */ +#define TMC_FFSR_FT_STOPPED BIT(1) + /* TMC_FFCR - 0x304 */ #define TMC_FFCR_FLUSHMAN_BIT 6 #define TMC_FFCR_EN_FMT BIT(0)