From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 50CEE2E3B15 for ; Mon, 13 Oct 2025 06:11:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760335912; cv=none; b=kw/nVSPGKRaGFS5e9Nf86SMsgGMnPW7Kt/69N3AYbxrjxzIpnYVjhUPnc591IjZOYQ8UR1z/+YOiNvawbBLIFe5rCJfKZ1N2MdAFUzjNpMG/7qJKXz89nLWUG9a+qFvZvuMR5uzAQeisWp9QN3HSw5k/uZDu6BmDw2Ljhi6vP3g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760335912; c=relaxed/simple; bh=v23xmem2Bt+Tgm+51X3S8Idk7oSeK94L/FuNsCG9NiI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=E8uLDakz2S4E9XVbK22lHdBblAgISGhx+qiXB4nw2ZpgcFnw7T9LhdHW5fuLMo0r9WrPTctSB8xkBUSLVW2tPlDURLNshRCfVQ2RRMRj5PuEJkYDZztGE/LCCgogqT6mrhboMRXmoADScFy3zkUFz4K8LZCTeqBz4si9o8+cJo4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=GskPnNZc; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="GskPnNZc" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 59D2nMMr005399 for ; Mon, 13 Oct 2025 06:11:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= DP7hy6R/ajCWGii9N1NQ8UzWBIex0rIJ0tD9YQPKZFA=; b=GskPnNZctdjaf7O6 CU7yKrlDhK4t8qe9JsL08HYWeQDTrKu6kiK18Cn21sNVz0hpcq01Yk02lGksA1cS 621TwTl8hdqXxsZ2uSgP4qvR39zRrDJG1SQF4P8KjCj1dbaewZ47mROfXf0qve1D u0N2wiPdtDwOL813+U24ME/v5gEjA/29TzeGD4UkUJ4Xnh+ejpmLWRWBQcejyfMP AXXJYWtQmYV5Z1ijY0B5z4DyWrKR/geEyf9aqz/IjvD8zMiGbZXE963IwjxzNsx+ 2AyEpcVI+3eFVsMPksQSVs4xGGWsY8eskIkjU+cI+2XlsVoCf6AWQq4jQqaYZ+oA OIdqrw== Received: from mail-pl1-f198.google.com (mail-pl1-f198.google.com [209.85.214.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 49qfbs3e89-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 13 Oct 2025 06:11:49 +0000 (GMT) Received: by mail-pl1-f198.google.com with SMTP id d9443c01a7336-26e4fcc744dso50122085ad.3 for ; Sun, 12 Oct 2025 23:11:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760335908; x=1760940708; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=DP7hy6R/ajCWGii9N1NQ8UzWBIex0rIJ0tD9YQPKZFA=; b=HA8Wmn+FAbBXC/9TPTrqt9DJ1+h78oRCYtvurm+JHX5JUfsO2mFLvW8C2/lxuo8fUw 8eBWMRgkeIBtld7xmQPqZ6Wby5tZCr/FKLlEgasfRpfwxNSn7u2SgHZx9lcdS7fGm8nW /rI2YLHznW2NRv0NOpK7EUehnXZwWoIQpx6ky9r2hYwHyG1TXa8qZWRHJUChvmfv3I6p jG4U6gvR5xzgoaN76ohVMBOKSHY6lrJYzXlyDs6VaV1Sa0XGkpO7IJHKVrySvKtTYOwp 4tZLgNbF/P73G82rkx0le42hY5YbsPp+lEX/iFqkx/cPhnCWsE4h6jyFYFFCuHNpAtfD lICg== X-Gm-Message-State: AOJu0YwOSItVwA2O0Kk0NDlzSJnnhfev2Rz6IhSIYXBq/VIMNLuXl6Ft h+61HtUzn8PkteIgRk09dkhb5OVg61RvBv3WROE7lw+QzD9F41GxEEh/bgjzmiv6K/PWUDBN8Qx QxO4cp0vrpqBwuPFPSDFKHplE+nqsXlck7GZMPn/ZBy0D/cZIxFzVGFqGfuM6+4azSKoX X-Gm-Gg: ASbGncvKbckp/+FSHpwJHk9lAGzsF5ZexnIP0eF5V5vweteiZVivn+PPp8S1HIe6/ie ZACpmEuYy0HZicJJe3kcA1SdNValL0K/Lr/Wc4o2LwjsrIV6HY4z4LM1s+cu4DPOpiCYnpyMdoo rPWbkRmUsLgpo2rjy+++tOK7pybBnE5QBH0YzeP4UTS2h72zffzrsE+MN3krcMyKJCDka1UtnkZ 0vc8i3w/gLhcjJ9zd+wuAlIIOfYbuhOt1bFpmFat06BPKpZhXzyfiEAwaq/CgpfQnh+zCkGhjaw QEwWGOXi5wmAJrrftgr2t4XVoFRYnPuT2n/c6G3AoaJXtOgjwd6D+zYcwzS29K6rSFAz5QWG2su cMAED1aW6iFYjzagkOUH6xxamFwE= X-Received: by 2002:a17:903:2c03:b0:24c:d6c6:c656 with SMTP id d9443c01a7336-290272135a1mr212187215ad.4.1760335908081; Sun, 12 Oct 2025 23:11:48 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFY6acNW15tVg29tgNuFQ2MXt4pYANG2HEWYSImxUA3M6Pr6uqlTS+XBatwLXw062GF+q0KPQ== X-Received: by 2002:a17:903:2c03:b0:24c:d6c6:c656 with SMTP id d9443c01a7336-290272135a1mr212186945ad.4.1760335907608; Sun, 12 Oct 2025 23:11:47 -0700 (PDT) Received: from jiegan-gv.ap.qualcomm.com (tpe-colo-wan-fw-bordernet.qualcomm.com. [103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2904f61a1desm64388675ad.82.2025.10.12.23.11.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 12 Oct 2025 23:11:47 -0700 (PDT) From: Jie Gan Date: Mon, 13 Oct 2025 14:11:17 +0800 Subject: [PATCH v3 2/3] coresight: tpdm: add static tpdm support Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251013-add-static-tpdm-support-v3-2-a720b73e83db@oss.qualcomm.com> References: <20251013-add-static-tpdm-support-v3-0-a720b73e83db@oss.qualcomm.com> In-Reply-To: <20251013-add-static-tpdm-support-v3-0-a720b73e83db@oss.qualcomm.com> To: Suzuki K Poulose , Mike Leach , James Clark , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tingwei Zhang , Mao Jinlong , Tao Zhang , Alexander Shishkin , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Jie Gan X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1760335892; l=8786; i=jie.gan@oss.qualcomm.com; s=20250909; h=from:subject:message-id; bh=v23xmem2Bt+Tgm+51X3S8Idk7oSeK94L/FuNsCG9NiI=; b=yfr4C8+me/BPW2PCtcSD7ksxh4HEiJxv1Pr2Gx7Lpmn0NzjOA8LDrDmj/vCnXmzJQLxD6dBLc Xqf+4eHZSf4DlOf+BrdHhJ9bpgJbdnbMdCmRsj9tcQ03IRoj1BaUTqn X-Developer-Key: i=jie.gan@oss.qualcomm.com; a=ed25519; pk=3LxxUZRPCNkvPDlWOvXfJNqNO4SfGdy3eghMb8puHuk= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDExMDAxOCBTYWx0ZWRfX+TTQbOKvyY/q vMooAP3ut8v6nUqk4zjiMT4hcYT2mVKEFDahnptUT7QEjXMWIq8b+DBFbNbYmQ7GcVfUCZ3ZVL5 KDsPfYPFScyRLuFwB+JB+UUpbzgO850Zx/Lefq29gsmtvpB3WTG4lDxA/9TngledY8vdCpPgrt8 UxDjwb1W4iXxh/3Sd1JHAlPFP3CmDGuLEVWThXkqHq71XUDpoL4jyLBhIrPzKETqkFdMFBjclq5 fo+j5Sr7a5aT//kN+WeTj0qN5DCCDJ6ra/HDBcM6m/PSKcJ+hIriSksNWl9zzyZqIEW+OVbYHja yv9V71oN/DTnN4Ttf4OnRBvbYMajcGxtg5X86VfCAiphu9pba4rv1pPg+l0gCjwjTTxT819+Tz8 B3eXiZR3LSNvDzyT5dVvIs8I6n7MEw== X-Proofpoint-ORIG-GUID: rDNSMnu09T7tVF5FJBGHUgcA_ZswcWPd X-Proofpoint-GUID: rDNSMnu09T7tVF5FJBGHUgcA_ZswcWPd X-Authority-Analysis: v=2.4 cv=U7SfzOru c=1 sm=1 tr=0 ts=68ec9825 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=x6icFKpwvdMA:10 a=EUspDBNiAAAA:8 a=_wMi7B_O7ukW3LTXVV0A:9 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-13_03,2025-10-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 spamscore=0 malwarescore=0 bulkscore=0 clxscore=1015 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510020000 definitions=main-2510110018 The static TPDM function as a dummy source, however, it is essential to enable the port connected to the TPDA and configure the element size. Without this, the TPDA cannot correctly receive trace data from the static TPDM. Since the static TPDM does not require MMIO mapping to access its registers, a clock controller is not mandatory for its operation. Signed-off-by: Jie Gan --- drivers/hwtracing/coresight/coresight-tpda.c | 9 ++ drivers/hwtracing/coresight/coresight-tpdm.c | 148 +++++++++++++++++++++------ drivers/hwtracing/coresight/coresight-tpdm.h | 8 ++ 3 files changed, 131 insertions(+), 34 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c index 333b3cb23685..4e93fa5bace4 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -68,6 +68,15 @@ static int tpdm_read_element_size(struct tpda_drvdata *drvdata, int rc = -EINVAL; struct tpdm_drvdata *tpdm_data = dev_get_drvdata(csdev->dev.parent); + if (coresight_is_static_tpdm(csdev)) { + rc = fwnode_property_read_u32(dev_fwnode(csdev->dev.parent), + "qcom,dsb-element-bits", &drvdata->dsb_esize); + rc &= fwnode_property_read_u32(dev_fwnode(csdev->dev.parent), + "qcom,cmb-element-bits", &drvdata->cmb_esize); + + goto out; + } + if (tpdm_data->dsb) { rc = fwnode_property_read_u32(dev_fwnode(csdev->dev.parent), "qcom,dsb-element-bits", &drvdata->dsb_esize); diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index 7214e65097ec..1766b0182819 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -495,7 +495,9 @@ static int tpdm_enable(struct coresight_device *csdev, struct perf_event *event, return -EBUSY; } - __tpdm_enable(drvdata); + if (!coresight_is_static_tpdm(csdev)) + __tpdm_enable(drvdata); + drvdata->enable = true; spin_unlock(&drvdata->spinlock); @@ -551,7 +553,9 @@ static void tpdm_disable(struct coresight_device *csdev, return; } - __tpdm_disable(drvdata); + if (!coresight_is_static_tpdm(csdev)) + __tpdm_disable(drvdata); + coresight_set_mode(csdev, CS_MODE_DISABLED); drvdata->enable = false; spin_unlock(&drvdata->spinlock); @@ -1342,10 +1346,9 @@ static const struct attribute_group *tpdm_attr_grps[] = { NULL, }; -static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) +static int tpdm_probe(struct device *dev, struct resource *res) { void __iomem *base; - struct device *dev = &adev->dev; struct coresight_platform_data *pdata; struct tpdm_drvdata *drvdata; struct coresight_desc desc = { 0 }; @@ -1354,32 +1357,33 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) pdata = coresight_get_platform_data(dev); if (IS_ERR(pdata)) return PTR_ERR(pdata); - adev->dev.platform_data = pdata; + dev->platform_data = pdata; /* driver data*/ drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) return -ENOMEM; - drvdata->dev = &adev->dev; + drvdata->dev = dev; dev_set_drvdata(dev, drvdata); - base = devm_ioremap_resource(dev, &adev->res); - if (IS_ERR(base)) - return PTR_ERR(base); + if (res) { + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); - drvdata->base = base; + drvdata->base = base; + ret = tpdm_datasets_setup(drvdata); + if (ret) + return ret; - ret = tpdm_datasets_setup(drvdata); - if (ret) - return ret; + if (drvdata && tpdm_has_dsb_dataset(drvdata)) + of_property_read_u32(drvdata->dev->of_node, + "qcom,dsb-msrs-num", &drvdata->dsb_msr_num); - if (drvdata && tpdm_has_dsb_dataset(drvdata)) - of_property_read_u32(drvdata->dev->of_node, - "qcom,dsb-msrs-num", &drvdata->dsb_msr_num); - - if (drvdata && tpdm_has_cmb_dataset(drvdata)) - of_property_read_u32(drvdata->dev->of_node, - "qcom,cmb-msrs-num", &drvdata->cmb_msr_num); + if (drvdata && tpdm_has_cmb_dataset(drvdata)) + of_property_read_u32(drvdata->dev->of_node, + "qcom,cmb-msrs-num", &drvdata->cmb_msr_num); + } /* Set up coresight component description */ desc.name = coresight_alloc_device_name(&tpdm_devs, dev); @@ -1388,34 +1392,51 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) desc.type = CORESIGHT_DEV_TYPE_SOURCE; desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM; desc.ops = &tpdm_cs_ops; - desc.pdata = adev->dev.platform_data; - desc.dev = &adev->dev; + desc.pdata = dev->platform_data; + desc.dev = dev; desc.access = CSDEV_ACCESS_IOMEM(base); - desc.groups = tpdm_attr_grps; + if (res) + desc.groups = tpdm_attr_grps; drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) return PTR_ERR(drvdata->csdev); spin_lock_init(&drvdata->spinlock); - /* Decrease pm refcount when probe is done.*/ - pm_runtime_put(&adev->dev); - return 0; } -static void tpdm_remove(struct amba_device *adev) +static int tpdm_remove(struct device *dev) { - struct tpdm_drvdata *drvdata = dev_get_drvdata(&adev->dev); + struct tpdm_drvdata *drvdata = dev_get_drvdata(dev); coresight_unregister(drvdata->csdev); + + return 0; +} + +static int dynamic_tpdm_probe(struct amba_device *adev, + const struct amba_id *id) +{ + int ret; + + ret = tpdm_probe(&adev->dev, &adev->res); + if (!ret) + pm_runtime_put(&adev->dev); + + return ret; +} + +static void dynamic_tpdm_remove(struct amba_device *adev) +{ + tpdm_remove(&adev->dev); } /* * Different TPDM has different periph id. * The difference is 0-7 bits' value. So ignore 0-7 bits. */ -static const struct amba_id tpdm_ids[] = { +static const struct amba_id dynamic_tpdm_ids[] = { { .id = 0x001f0e00, .mask = 0x00ffff00, @@ -1423,17 +1444,76 @@ static const struct amba_id tpdm_ids[] = { { 0, 0, NULL }, }; -static struct amba_driver tpdm_driver = { +MODULE_DEVICE_TABLE(amba, dynamic_tpdm_ids); + +static struct amba_driver dynamic_tpdm_driver = { .drv = { .name = "coresight-tpdm", .suppress_bind_attrs = true, }, - .probe = tpdm_probe, - .id_table = tpdm_ids, - .remove = tpdm_remove, + .probe = dynamic_tpdm_probe, + .id_table = dynamic_tpdm_ids, + .remove = dynamic_tpdm_remove, }; -module_amba_driver(tpdm_driver); +static int tpdm_platform_probe(struct platform_device *pdev) +{ + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + int ret; + + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + ret = tpdm_probe(&pdev->dev, res); + pm_runtime_put(&pdev->dev); + if (ret) + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static void tpdm_platform_remove(struct platform_device *pdev) +{ + struct tpdm_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (WARN_ON(!drvdata)) + return; + + tpdm_remove(&pdev->dev); + pm_runtime_disable(&pdev->dev); +} + +static const struct of_device_id static_tpdm_match[] = { + {.compatible = "qcom,coresight-static-tpdm"}, + {} +}; + +MODULE_DEVICE_TABLE(of, static_tpdm_match); + +static struct platform_driver static_tpdm_driver = { + .probe = tpdm_platform_probe, + .remove = tpdm_platform_remove, + .driver = { + .name = "coresight-static-tpdm", + .of_match_table = static_tpdm_match, + .suppress_bind_attrs = true, + }, +}; + +static int __init tpdm_init(void) +{ + return coresight_init_driver("tpdm", &dynamic_tpdm_driver, &static_tpdm_driver, + THIS_MODULE); +} + +static void __exit tpdm_exit(void) +{ + coresight_remove_driver(&dynamic_tpdm_driver, &static_tpdm_driver); +} + +module_init(tpdm_init); +module_exit(tpdm_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Trace, Profiling & Diagnostic Monitor driver"); diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h index b11754389734..9f52c88ce5c1 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.h +++ b/drivers/hwtracing/coresight/coresight-tpdm.h @@ -343,4 +343,12 @@ struct tpdm_dataset_attribute { enum dataset_mem mem; u32 idx; }; + +static inline bool coresight_is_static_tpdm(struct coresight_device *csdev) +{ + struct device_node *node = csdev->dev.parent->of_node; + + return (csdev && + of_device_is_compatible(node, "qcom,coresight-static-tpdm")); +} #endif /* _CORESIGHT_CORESIGHT_TPDM_H */ -- 2.34.1