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Thu, 20 Feb 2025 09:42:09 GMT Received: from yuanfang4-gv.ap.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 20 Feb 2025 01:42:04 -0800 From: Yuanfang Zhang Date: Thu, 20 Feb 2025 17:41:24 +0800 Subject: [PATCH 4/5] coresight-tnoc: add node to configure flag type MIME-Version: 1.0 Message-ID: <20250220-trace-noc-driver-v1-4-15d78bd48e12@quicinc.com> References: <20250220-trace-noc-driver-v1-0-15d78bd48e12@quicinc.com> In-Reply-To: <20250220-trace-noc-driver-v1-0-15d78bd48e12@quicinc.com> To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" CC: , , , , Yuanfang Zhang X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1740044514; l=2045; i=quic_yuanfang@quicinc.com; s=20241209; h=from:subject:message-id; bh=XbTCKvIMDyl2DMpRiyDboA4ABVpbG+2OBuCevF1YKhI=; b=Pqu1/3bbvFLUYjPvJZO5lWaJKO3UxVsRxm5FRBy/v11wJCsNnVjFVEza1AOLl89N6DJFrQ6kR CJSVyYpgEgPD3JGs3zsSfiXUyc/skejDe8T2qZYTCSeXzsjhSLZBsXr X-Developer-Key: i=quic_yuanfang@quicinc.com; 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1: 'FLAG_TS' packets. Signed-off-by: Yuanfang Zhang --- drivers/hwtracing/coresight/coresight-tnoc.c | 42 +++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tnoc.c b/drivers/hwtracing/coresight/coresight-tnoc.c index 25962af3850af106f7a8b7e1738ad93d44b81ee7..3ff3504603f66bd595484374f1cdac90c528b665 100644 --- a/drivers/hwtracing/coresight/coresight-tnoc.c +++ b/drivers/hwtracing/coresight/coresight-tnoc.c @@ -26,7 +26,7 @@ static ssize_t flush_req_store(struct device *dev, unsigned long val; u32 reg; - if (kstrtoul(buf, 10, &val)) + if (kstrtoul(buf, 0, &val)) return -EINVAL; if (val != 1) @@ -73,9 +73,49 @@ static ssize_t flush_status_show(struct device *dev, } static DEVICE_ATTR_RO(flush_status); +/* + * Sets the type of issued ATB FLAG packets: + * 0: 'FLAG' packets; + * 1: 'FLAG_TS' packets. + */ +static ssize_t flag_type_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t size) +{ + struct trace_noc_drvdata *drvdata = dev_get_drvdata(dev->parent); + unsigned long val; + + if (kstrtoul(buf, 10, &val)) + return -EINVAL; + + if (val != 1 && val != 0) + return -EINVAL; + + spin_lock(&drvdata->spinlock); + if (val) + drvdata->flag_type = FLAG_TS; + else + drvdata->flag_type = FLAG; + spin_unlock(&drvdata->spinlock); + + return size; +} + +static ssize_t flag_type_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct trace_noc_drvdata *drvdata = dev_get_drvdata(dev->parent); + + return sysfs_emit(buf, "%u\n", drvdata->flag_type); +} +static DEVICE_ATTR_RW(flag_type); + static struct attribute *trace_noc_attrs[] = { &dev_attr_flush_req.attr, &dev_attr_flush_status.attr, + &dev_attr_flag_type.attr, NULL, };