[PATCH v10 00/10] Coresight: Add support for TPDM and TPDA

[PATCH v10 00/10] Coresight: Add support for TPDM and TPDA

[Mao Jinlong]

This series adds support for the trace performance monitoring and
diagnostics hardware (TPDM and TPDA). It is composed of two major
elements.
a) Changes for original coresight framework to support for TPDM and TPDA.
b) Add driver code for TPDM and TPDA.

Introduction of changes for original coresight framework
Support TPDM as new coresight source.
Since only STM and ETM are supported as coresight source originally.
TPDM is a newly added coresight source. We need to change
the original way of saving coresight path to support more types source
for coresight driver.
The following patch is to add support more coresight sources.
    coresight: core: Use IDR for non-cpu bound sources' paths.

Introduction of TPDM and TPDA
TPDM - The trace performance monitoring and diagnostics monitor or TPDM in
short serves as data collection component for various dataset types
specified in the QPMDA(Qualcomm performance monitoring and diagnostics
architecture) spec. The primary use case of the TPDM is to collect data
from different data sources and send it to a TPDA for packetization,
timestamping and funneling.
     Coresight: Add coresight TPDM source driver
     dt-bindings: arm: Adds CoreSight TPDM hardware definitions
     coresight-tpdm: Add DSB dataset support
     coresight-tpdm: Add integration test support
     docs: sysfs: coresight: Add sysfs ABI documentation for TPDM

TPDA - The trace performance monitoring and diagnostics aggregator or
TPDA in short serves as an arbitration and packetization engine for the
performance monitoring and diagnostics network as specified in the QPMDA
(Qualcomm performance monitoring and diagnostics architecture)
specification. The primary use case of the TPDA is to provide
packetization, funneling and timestamping of Monitor data as specified
in the QPMDA specification.
The following patch is to add driver for TPDA.
     Coresight: Add TPDA link driver
     dt-bindings: arm: Adds CoreSight TPDA hardware definitions

The last patch of this series is a device tree modification, which add
the TPDM and TPDA configuration to device tree for validating.
    ARM: dts: msm: Add coresight components for SM8250
    ARM: dts: msm: Add tpdm mm/prng for sm8250

Once this series patches are applied properly, the tpdm and tpda nodes
should be observed at the coresight path /sys/bus/coresight/devices
e.g.
/sys/bus/coresight/devices # ls -l | grep tpd
tpda0 -> ../../../devices/platform/soc@0/6004000.tpda/tpda0
tpdm0 -> ../../../devices/platform/soc@0/6c08000.mm.tpdm/tpdm0

We can use the commands are similar to the below to validate TPDMs.
Enable coresight sink first.

echo 1 > /sys/bus/coresight/devices/tmc_etf0/enable_sink
echo 1 > /sys/bus/coresight/devices/tpdm0/enable_source
echo 1 > /sys/bus/coresight/devices/tpdm0/integration_test
echo 2 > /sys/bus/coresight/devices/tpdm0/integration_test
The test data will be collected in the coresight sink which is enabled.
If rwp register of the sink is keeping updating when do
integration_test (by cat tmc_etf0/mgmt/rwp), it means there is data
generated from TPDM to sink.

There must be a tpda between tpdm and the sink. When there are some
other trace event hw components in the same HW block with tpdm, tpdm
and these hw components will connect to the coresight funnel. When
there is only tpdm trace hw in the HW block, tpdm will connect to
tpda directly.
  
    +---------------+                +-------------+
    |  tpdm@6c08000 |                |tpdm@684C000 |
    +-------|-------+                +------|------+
            |                               |
    +-------|-------+                       |
    | funnel@6c0b000|                       |
    +-------|-------+                       |
            |                               |
    +-------|-------+                       |
    |funnel@6c2d000 |                       |
    +-------|-------+                       |
            |                               |
            |    +---------------+          |
            +----- tpda@6004000  -----------+
                 +-------|-------+
                         |
                 +-------|-------+
                 |funnel@6005000 |
                 +---------------+

This patch series depends on patch series
"coresight: Add new API to allocate trace source ID values".
https://patchwork.kernel.org/project/linux-arm-kernel/cover/20220308205000.27646-1-mike.leach@linaro.org/ 

Changes from V9:
1. Fix the error of TPDM yaml file. -- Rob Herring <robh@kernel.org>

Mao Jinlong (10):
  coresight: core: Use IDR for non-cpu bound sources' paths.
  Coresight: Add coresight TPDM source driver
  dt-bindings: arm: Adds CoreSight TPDM hardware definitions
  coresight-tpdm: Add DSB dataset support
  coresight-tpdm: Add integration test support
  docs: sysfs: coresight: Add sysfs ABI documentation for TPDM
  Coresight: Add TPDA link driver
  dt-bindings: arm: Adds CoreSight TPDA hardware definitions
  arm64: dts: qcom: sm8250: Add coresight components
  arm64: dts: qcom: sm8250: Add tpdm mm/prng

 .../testing/sysfs-bus-coresight-devices-tpdm  |  13 +
 .../bindings/arm/qcom,coresight-tpda.yaml     | 111 +++
 .../bindings/arm/qcom,coresight-tpdm.yaml     |  93 +++
 MAINTAINERS                                   |   2 +
 arch/arm64/boot/dts/qcom/sm8250.dtsi          | 671 ++++++++++++++++++
 drivers/hwtracing/coresight/Kconfig           |  23 +
 drivers/hwtracing/coresight/Makefile          |   2 +
 drivers/hwtracing/coresight/coresight-core.c  |  42 +-
 drivers/hwtracing/coresight/coresight-tpda.c  | 206 ++++++
 drivers/hwtracing/coresight/coresight-tpda.h  |  35 +
 drivers/hwtracing/coresight/coresight-tpdm.c  | 259 +++++++
 drivers/hwtracing/coresight/coresight-tpdm.h  |  62 ++
 include/linux/coresight.h                     |   1 +
 13 files changed, 1508 insertions(+), 12 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
 create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
 create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
 create mode 100644 drivers/hwtracing/coresight/coresight-tpda.c
 create mode 100644 drivers/hwtracing/coresight/coresight-tpda.h
 create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.c
 create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.h

-- 
2.17.1


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[PATCH v10 01/10] coresight: core: Use IDR for non-cpu bound sources' paths.

[Mao Jinlong]

Except stm, there could be other sources which are not associated
with cpus. Use IDR to store and search these sources' paths.

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 drivers/hwtracing/coresight/coresight-core.c | 37 ++++++++++++++------
 1 file changed, 26 insertions(+), 11 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index bbf415c252f9..23ab16dd9b5d 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -8,6 +8,7 @@
 #include <linux/types.h>
 #include <linux/device.h>
 #include <linux/io.h>
+#include <linux/idr.h>
 #include <linux/err.h>
 #include <linux/export.h>
 #include <linux/slab.h>
@@ -27,6 +28,13 @@
 static DEFINE_MUTEX(coresight_mutex);
 static DEFINE_PER_CPU(struct coresight_device *, csdev_sink);
 
+/*
+ * Use IDR to map the hash of the source's device name
+ * to the pointer of path for the source. The idr is for
+ * the sources which aren't associated with CPU.
+ */
+static DEFINE_IDR(path_idr);
+
 /**
  * struct coresight_node - elements of a path, from source to sink
  * @csdev:	Address of an element.
@@ -43,14 +51,6 @@ struct coresight_node {
  */
 static DEFINE_PER_CPU(struct list_head *, tracer_path);
 
-/*
- * As of this writing only a single STM can be found in CS topologies.  Since
- * there is no way to know if we'll ever see more and what kind of
- * configuration they will enact, for the time being only define a single path
- * for STM.
- */
-static struct list_head *stm_path;
-
 /*
  * Set up a global trace ID map.
  * We may need a per sink ID map in future for larger / multi sink systems.
@@ -1061,6 +1061,7 @@ int coresight_enable(struct coresight_device *csdev)
 	struct coresight_device *sink;
 	struct list_head *path;
 	enum coresight_dev_subtype_source subtype;
+	u32 hash;
 
 	subtype = csdev->subtype.source_subtype;
 
@@ -1115,7 +1116,14 @@ int coresight_enable(struct coresight_device *csdev)
 		per_cpu(tracer_path, cpu) = path;
 		break;
 	case CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE:
-		stm_path = path;
+		/*
+		 * Use the hash of source's device name as ID
+		 * and map the ID to the pointer of the path.
+		 */
+		hash = hashlen_hash(hashlen_string(NULL, dev_name(&csdev->dev)));
+		ret = idr_alloc_u32(&path_idr, path, &hash, hash, GFP_KERNEL);
+		if (ret)
+			goto err_source;
 		break;
 	default:
 		/* We can't be here */
@@ -1139,6 +1147,7 @@ void coresight_disable(struct coresight_device *csdev)
 {
 	int cpu, ret;
 	struct list_head *path = NULL;
+	u32 hash;
 
 	mutex_lock(&coresight_mutex);
 
@@ -1156,14 +1165,20 @@ void coresight_disable(struct coresight_device *csdev)
 		per_cpu(tracer_path, cpu) = NULL;
 		break;
 	case CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE:
-		path = stm_path;
-		stm_path = NULL;
+		hash = hashlen_hash(hashlen_string(NULL, dev_name(&csdev->dev)));
+		/* Find the path by the hash. */
+		path = idr_find(&path_idr, hash);
+		if (path == NULL) {
+			pr_err("Path is not found for %s\n", dev_name(&csdev->dev));
+			goto out;
+		}
 		break;
 	default:
 		/* We can't be here */
 		break;
 	}
 
+	idr_remove(&path_idr, hash);
 	coresight_disable_path(path);
 	coresight_release_path(path);
 
-- 
2.17.1


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[PATCH v10 02/10] Coresight: Add coresight TPDM source driver

[Mao Jinlong]

Add driver to support Coresight device TPDM (Trace, Profiling and
Diagnostics Monitor). TPDM is a monitor to collect data from
different datasets. This change is to add probe/enable/disable
functions for tpdm source.

Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 drivers/hwtracing/coresight/Kconfig          |  12 ++
 drivers/hwtracing/coresight/Makefile         |   1 +
 drivers/hwtracing/coresight/coresight-core.c |   5 +-
 drivers/hwtracing/coresight/coresight-tpdm.c | 149 +++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tpdm.h |  26 ++++
 include/linux/coresight.h                    |   1 +
 6 files changed, 193 insertions(+), 1 deletion(-)
 create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.c
 create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.h

diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index 514a9b8086e3..b2b72a35e416 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -201,4 +201,16 @@ config CORESIGHT_TRBE
 
 	  To compile this driver as a module, choose M here: the module will be
 	  called coresight-trbe.
+
+config CORESIGHT_TPDM
+	tristate "CoreSight Trace, Profiling & Diagnostics Monitor driver"
+	select CORESIGHT_LINKS_AND_SINKS
+	help
+	  This driver provides support for configuring monitor. Monitors are
+	  primarily responsible for data set collection and support the
+	  ability to collect any permutation of data set types.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called coresight-tpdm.
+
 endif
diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile
index 329a0c704b87..6bb9b1746bc7 100644
--- a/drivers/hwtracing/coresight/Makefile
+++ b/drivers/hwtracing/coresight/Makefile
@@ -25,5 +25,6 @@ obj-$(CONFIG_CORESIGHT_CPU_DEBUG) += coresight-cpu-debug.o
 obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o
 obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o
 obj-$(CONFIG_CORESIGHT_TRBE) += coresight-trbe.o
+obj-$(CONFIG_CORESIGHT_TPDM) += coresight-tpdm.o
 coresight-cti-y := coresight-cti-core.o	coresight-cti-platform.o \
 		   coresight-cti-sysfs.o
diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index 23ab16dd9b5d..1d2b5b84bb5d 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -1047,7 +1047,8 @@ static int coresight_validate_source(struct coresight_device *csdev,
 	}
 
 	if (subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_PROC &&
-	    subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE) {
+	    subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE &&
+	    subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS) {
 		dev_err(&csdev->dev, "wrong device subtype in %s\n", function);
 		return -EINVAL;
 	}
@@ -1116,6 +1117,7 @@ int coresight_enable(struct coresight_device *csdev)
 		per_cpu(tracer_path, cpu) = path;
 		break;
 	case CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE:
+	case CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS:
 		/*
 		 * Use the hash of source's device name as ID
 		 * and map the ID to the pointer of the path.
@@ -1165,6 +1167,7 @@ void coresight_disable(struct coresight_device *csdev)
 		per_cpu(tracer_path, cpu) = NULL;
 		break;
 	case CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE:
+	case CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS:
 		hash = hashlen_hash(hashlen_string(NULL, dev_name(&csdev->dev)));
 		/* Find the path by the hash. */
 		path = idr_find(&path_idr, hash);
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
new file mode 100644
index 000000000000..eb8998affa90
--- /dev/null
+++ b/drivers/hwtracing/coresight/coresight-tpdm.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/amba/bus.h>
+#include <linux/bitmap.h>
+#include <linux/coresight.h>
+#include <linux/coresight-pmu.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include "coresight-priv.h"
+#include "coresight-tpdm.h"
+
+DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm");
+
+/* TPDM enable operations */
+static int tpdm_enable(struct coresight_device *csdev,
+		       struct perf_event *event, u32 mode)
+{
+	struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+	spin_lock(&drvdata->spinlock);
+	if (drvdata->enable) {
+		spin_unlock(&drvdata->spinlock);
+		return -EBUSY;
+	}
+
+	drvdata->enable = true;
+	spin_unlock(&drvdata->spinlock);
+
+	dev_info(drvdata->dev, "TPDM tracing enabled\n");
+	return 0;
+}
+
+/* TPDM disable operations */
+static void tpdm_disable(struct coresight_device *csdev,
+			 struct perf_event *event)
+{
+	struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+	spin_lock(&drvdata->spinlock);
+	if (!drvdata->enable) {
+		spin_unlock(&drvdata->spinlock);
+		return;
+	}
+
+	drvdata->enable = false;
+	spin_unlock(&drvdata->spinlock);
+
+	dev_info(drvdata->dev, "TPDM tracing disabled\n");
+}
+
+static const struct coresight_ops_source tpdm_source_ops = {
+	.enable		= tpdm_enable,
+	.disable	= tpdm_disable,
+};
+
+static const struct coresight_ops tpdm_cs_ops = {
+	.source_ops	= &tpdm_source_ops,
+};
+
+static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
+{
+	void __iomem *base;
+	struct device *dev = &adev->dev;
+	struct coresight_platform_data *pdata;
+	struct tpdm_drvdata *drvdata;
+	struct coresight_desc desc = { 0 };
+
+	pdata = coresight_get_platform_data(dev);
+	if (IS_ERR(pdata))
+		return PTR_ERR(pdata);
+	adev->dev.platform_data = pdata;
+
+	/* driver data*/
+	drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+	if (!drvdata)
+		return -ENOMEM;
+	drvdata->dev = &adev->dev;
+	dev_set_drvdata(dev, drvdata);
+
+	base = devm_ioremap_resource(dev, &adev->res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	drvdata->base = base;
+
+	/* Set up coresight component description */
+	desc.name = coresight_alloc_device_name(&tpdm_devs, dev);
+	if (!desc.name)
+		return -ENOMEM;
+	desc.type = CORESIGHT_DEV_TYPE_SOURCE;
+	desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS;
+	desc.ops = &tpdm_cs_ops;
+	desc.pdata = adev->dev.platform_data;
+	desc.dev = &adev->dev;
+	desc.access = CSDEV_ACCESS_IOMEM(base);
+	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 __exit tpdm_remove(struct amba_device *adev)
+{
+	struct tpdm_drvdata *drvdata = dev_get_drvdata(&adev->dev);
+
+	coresight_unregister(drvdata->csdev);
+}
+
+/*
+ * Different TPDM has different periph id.
+ * The difference is 0-7 bits' value. So ignore 0-7 bits.
+ */
+static struct amba_id tpdm_ids[] = {
+	{
+		.id = 0x000f0e00,
+		.mask = 0x000fff00,
+	},
+	{ 0, 0},
+};
+
+static struct amba_driver tpdm_driver = {
+	.drv = {
+		.name   = "coresight-tpdm",
+		.owner	= THIS_MODULE,
+		.suppress_bind_attrs = true,
+	},
+	.probe          = tpdm_probe,
+	.id_table	= tpdm_ids,
+	.remove		= tpdm_remove,
+};
+
+module_amba_driver(tpdm_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Trace, Profiling & Diagnostic Monitor driver");
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h
new file mode 100644
index 000000000000..c87b982d963e
--- /dev/null
+++ b/drivers/hwtracing/coresight/coresight-tpdm.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef _CORESIGHT_CORESIGHT_TPDM_H
+#define _CORESIGHT_CORESIGHT_TPDM_H
+
+/**
+ * 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.
+ * @csdev:      component vitals needed by the framework.
+ * @spinlock:   lock for the drvdata value.
+ * @enable:     enable status of the component.
+ */
+
+struct tpdm_drvdata {
+	void __iomem		*base;
+	struct device		*dev;
+	struct coresight_device	*csdev;
+	spinlock_t		spinlock;
+	bool			enable;
+};
+
+#endif  /* _CORESIGHT_CORESIGHT_TPDM_H */
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 247147c11231..738b66f4cc35 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -61,6 +61,7 @@ enum coresight_dev_subtype_source {
 	CORESIGHT_DEV_SUBTYPE_SOURCE_PROC,
 	CORESIGHT_DEV_SUBTYPE_SOURCE_BUS,
 	CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE,
+	CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS,
 };
 
 enum coresight_dev_subtype_helper {
-- 
2.17.1


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[PATCH v10 03/10] dt-bindings: arm: Adds CoreSight TPDM hardware definitions

[Mao Jinlong]

Adds new coresight-tpdm.yaml file describing the bindings required
to define tpdm in the device trees.

Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 .../bindings/arm/qcom,coresight-tpdm.yaml     | 93 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 94 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
new file mode 100644
index 000000000000..5881cb41da70
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,coresight-tpdm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trace, Profiling and Diagnostics Monitor - TPDM
+
+description: |
+  The TPDM or Monitor serves as data collection component for various dataset
+  types specified in the QPMDA spec. It covers Implementation defined ((ImplDef),
+  Basic Counts (BC), Tenure Counts (TC), Continuous Multi-Bit (CMB), and Discrete
+  Single Bit (DSB). It performs data collection in the data producing clock
+  domain and transfers it to the data collection time domain, generally ATB
+  clock domain.
+
+  The primary use case of the TPDM is to collect data from different data
+  sources and send it to a TPDA for packetization, timestamping, and funneling.
+
+maintainers:
+  - Mao Jinlong <quic_jinlmao@quicinc.com>
+  - Tao Zhang <quic_taozha@quicinc.com>
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,coresight-tpdm
+  required:
+    - compatible
+
+properties:
+  $nodename:
+    pattern: "^tpdm(@[0-9a-f]+)$"
+  compatible:
+    items:
+      - const: qcom,coresight-tpdm
+      - const: arm,primecell
+
+  reg:
+    minItems: 1
+    maxItems: 2
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: apb_pclk
+
+  out-ports:
+    description: |
+      Output connections from the TPDM to coresight funnel/TPDA.
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port:
+        description: Output connection from the TPDM to coresight
+            funnel/TPDA.
+        $ref: /schemas/graph.yaml#/properties/port
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  # minimum TPDM definition. TPDM connect to coresight TPDA.
+  - |
+    tpdm@684c000 {
+      compatible = "qcom,coresight-tpdm", "arm,primecell";
+      reg = <0x0684c000 0x1000>;
+
+      clocks = <&aoss_qmp>;
+      clock-names = "apb_pclk";
+
+      out-ports {
+        port {
+          tpdm_prng_out_tpda_qdss: endpoint {
+            remote-endpoint =
+              <&tpda_qdss_in_tpdm_prng>;
+          };
+        };
+      };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index b85ee59e808b..e6a8dc714af7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1979,6 +1979,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
 F:	Documentation/ABI/testing/sysfs-bus-coresight-devices-*
 F:	Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt
 F:	Documentation/devicetree/bindings/arm/coresight-cti.yaml
+F:	Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
 F:	Documentation/devicetree/bindings/arm/coresight.txt
 F:	Documentation/devicetree/bindings/arm/ete.yaml
 F:	Documentation/devicetree/bindings/arm/trbe.yaml
-- 
2.17.1


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[PATCH v10 04/10] coresight-tpdm: Add DSB dataset support

[Mao Jinlong]

TPDM serves as data collection component for various dataset types.
DSB(Discrete Single Bit) is one of the dataset types. DSB subunit
can be enabled for data collection by writing 1 to the first bit of
DSB_CR register. This change is to add enable/disable function for
DSB dataset by writing DSB_CR register.

Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 drivers/hwtracing/coresight/coresight-tpdm.c | 56 ++++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tpdm.h | 22 ++++++++
 2 files changed, 78 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
index eb8998affa90..fac7b9d92af8 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.c
+++ b/drivers/hwtracing/coresight/coresight-tpdm.c
@@ -20,7 +20,28 @@
 
 DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm");
 
+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_CR);
+	val |= TPDM_DSB_CR_ENA;
+	writel_relaxed(val, drvdata->base + TPDM_DSB_CR);
+}
+
 /* TPDM enable operations */
+static void __tpdm_enable(struct tpdm_drvdata *drvdata)
+{
+	CS_UNLOCK(drvdata->base);
+
+	/* Check if DSB datasets is present for TPDM. */
+	if (drvdata->datasets & TPDM_PIDR0_DS_DSB)
+		tpdm_enable_dsb(drvdata);
+
+	CS_LOCK(drvdata->base);
+}
+
 static int tpdm_enable(struct coresight_device *csdev,
 		       struct perf_event *event, u32 mode)
 {
@@ -32,6 +53,7 @@ static int tpdm_enable(struct coresight_device *csdev,
 		return -EBUSY;
 	}
 
+	__tpdm_enable(drvdata);
 	drvdata->enable = true;
 	spin_unlock(&drvdata->spinlock);
 
@@ -39,7 +61,28 @@ static int tpdm_enable(struct coresight_device *csdev,
 	return 0;
 }
 
+static void tpdm_disable_dsb(struct tpdm_drvdata *drvdata)
+{
+	u32 val;
+
+	/* Set the enable bit of DSB control register to 0 */
+	val = readl_relaxed(drvdata->base + TPDM_DSB_CR);
+	val &= ~TPDM_DSB_CR_ENA;
+	writel_relaxed(val, drvdata->base + TPDM_DSB_CR);
+}
+
 /* TPDM disable operations */
+static void __tpdm_disable(struct tpdm_drvdata *drvdata)
+{
+	CS_UNLOCK(drvdata->base);
+
+	/* Check if DSB datasets is present for TPDM. */
+	if (drvdata->datasets & TPDM_PIDR0_DS_DSB)
+		tpdm_disable_dsb(drvdata);
+
+	CS_LOCK(drvdata->base);
+}
+
 static void tpdm_disable(struct coresight_device *csdev,
 			 struct perf_event *event)
 {
@@ -51,6 +94,7 @@ static void tpdm_disable(struct coresight_device *csdev,
 		return;
 	}
 
+	__tpdm_disable(drvdata);
 	drvdata->enable = false;
 	spin_unlock(&drvdata->spinlock);
 
@@ -66,6 +110,17 @@ static const struct coresight_ops tpdm_cs_ops = {
 	.source_ops	= &tpdm_source_ops,
 };
 
+static void tpdm_init_default_data(struct tpdm_drvdata *drvdata)
+{
+	u32 pidr;
+
+	CS_UNLOCK(drvdata->base);
+	/*  Get the datasets present on the TPDM. */
+	pidr = readl_relaxed(drvdata->base + CORESIGHT_PERIPHIDR0);
+	drvdata->datasets |= pidr & GENMASK(TPDM_DATASETS - 1, 0);
+	CS_LOCK(drvdata->base);
+}
+
 static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	void __iomem *base;
@@ -107,6 +162,7 @@ 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 c87b982d963e..c8a101cbb4c7 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.h
+++ b/drivers/hwtracing/coresight/coresight-tpdm.h
@@ -6,6 +6,26 @@
 #ifndef _CORESIGHT_CORESIGHT_TPDM_H
 #define _CORESIGHT_CORESIGHT_TPDM_H
 
+/* The max number of the datasets that TPDM supports */
+#define TPDM_DATASETS       7
+
+/* DSB Subunit Registers */
+#define TPDM_DSB_CR		(0x780)
+/* Enable bit for DSB subunit */
+#define TPDM_DSB_CR_ENA		BIT(0)
+
+/**
+ * The bits of PERIPHIDR0 register.
+ * The fields [6:0] of PERIPHIDR0 are used to determine what
+ * interfaces and subunits are present on a given TPDM.
+ *
+ * PERIPHIDR0[0] : Fix to 1 if ImplDef subunit present, else 0
+ * PERIPHIDR0[1] : Fix to 1 if DSB subunit present, else 0
+ */
+
+#define TPDM_PIDR0_DS_IMPDEF	BIT(0)
+#define TPDM_PIDR0_DS_DSB	BIT(1)
+
 /**
  * struct tpdm_drvdata - specifics associated to an TPDM component
  * @base:       memory mapped base address for this component.
@@ -13,6 +33,7 @@
  * @csdev:      component vitals needed by the framework.
  * @spinlock:   lock for the drvdata value.
  * @enable:     enable status of the component.
+ * @datasets:   The datasets types present of the TPDM.
  */
 
 struct tpdm_drvdata {
@@ -21,6 +42,7 @@ struct tpdm_drvdata {
 	struct coresight_device	*csdev;
 	spinlock_t		spinlock;
 	bool			enable;
+	unsigned long		datasets;
 };
 
 #endif  /* _CORESIGHT_CORESIGHT_TPDM_H */
-- 
2.17.1


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[PATCH v10 05/10] coresight-tpdm: Add integration test support

[Mao Jinlong]

Integration test for tpdm can help to generate the data for
verification of the topology during TPDM software bring up.

Sample:
echo 1 > /sys/bus/coresight/devices/tmc_etf0/enable_sink
echo 1 > /sys/bus/coresight/devices/tpdm0/enable_source
echo 1 > /sys/bus/coresight/devices/tpdm0/integration_test
echo 2 > /sys/bus/coresight/devices/tpdm0/integration_test
cat /dev/tmc_etf0 > /data/etf-tpdm0.bin

Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 drivers/hwtracing/coresight/coresight-tpdm.c | 54 ++++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tpdm.h | 14 +++++
 2 files changed, 68 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
index fac7b9d92af8..7c55f0c023d1 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.c
+++ b/drivers/hwtracing/coresight/coresight-tpdm.c
@@ -121,6 +121,59 @@ static void tpdm_init_default_data(struct tpdm_drvdata *drvdata)
 	CS_LOCK(drvdata->base);
 }
 
+/*
+ * value 1: 64 bits test data
+ * value 2: 32 bits test data
+ */
+static ssize_t integration_test_store(struct device *dev,
+					  struct device_attribute *attr,
+					  const char *buf,
+					  size_t size)
+{
+	int i, ret = 0;
+	unsigned long val;
+	struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
+
+	ret = kstrtoul(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	if (val != 1 && val != 2)
+		return -EINVAL;
+
+	if (!drvdata->enable)
+		return -EINVAL;
+
+	if (val == 1)
+		val = ATBCNTRL_VAL_64;
+	else
+		val = ATBCNTRL_VAL_32;
+	CS_UNLOCK(drvdata->base);
+	writel_relaxed(0x1, drvdata->base + TPDM_ITCNTRL);
+
+	for (i = 0; i < INTEGRATION_TEST_CYCLE; i++)
+		writel_relaxed(val, drvdata->base + TPDM_ITATBCNTRL);
+
+	writel_relaxed(0, drvdata->base + TPDM_ITCNTRL);
+	CS_LOCK(drvdata->base);
+	return size;
+}
+static DEVICE_ATTR_WO(integration_test);
+
+static struct attribute *tpdm_attrs[] = {
+	&dev_attr_integration_test.attr,
+	NULL,
+};
+
+static struct attribute_group tpdm_attr_grp = {
+	.attrs = tpdm_attrs,
+};
+
+static const struct attribute_group *tpdm_attr_grps[] = {
+	&tpdm_attr_grp,
+	NULL,
+};
+
 static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	void __iomem *base;
@@ -157,6 +210,7 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
 	desc.pdata = adev->dev.platform_data;
 	desc.dev = &adev->dev;
 	desc.access = CSDEV_ACCESS_IOMEM(base);
+	desc.groups = tpdm_attr_grps;
 	drvdata->csdev = coresight_register(&desc);
 	if (IS_ERR(drvdata->csdev))
 		return PTR_ERR(drvdata->csdev);
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.h b/drivers/hwtracing/coresight/coresight-tpdm.h
index c8a101cbb4c7..d808fa1e8d4a 100644
--- a/drivers/hwtracing/coresight/coresight-tpdm.h
+++ b/drivers/hwtracing/coresight/coresight-tpdm.h
@@ -14,6 +14,20 @@
 /* Enable bit for DSB subunit */
 #define TPDM_DSB_CR_ENA		BIT(0)
 
+/* TPDM integration test registers */
+#define TPDM_ITATBCNTRL		(0xEF0)
+#define TPDM_ITCNTRL		(0xF00)
+
+/* Register value for integration test */
+#define ATBCNTRL_VAL_32		0xC00F1409
+#define ATBCNTRL_VAL_64		0xC01F1409
+
+/*
+ * Number of cycles to write value when
+ * integration test.
+ */
+#define INTEGRATION_TEST_CYCLE	10
+
 /**
  * The bits of PERIPHIDR0 register.
  * The fields [6:0] of PERIPHIDR0 are used to determine what
-- 
2.17.1


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[PATCH v10 06/10] docs: sysfs: coresight: Add sysfs ABI documentation for TPDM

[Mao Jinlong]

Add API usage document for sysfs API in TPDM driver.

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 .../ABI/testing/sysfs-bus-coresight-devices-tpdm    | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm

diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
new file mode 100644
index 000000000000..92bc09fbb69b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
@@ -0,0 +1,13 @@
+What:		/sys/bus/coresight/devices/<tpdm-name>/integration_test
+Date:		June 2022
+KernelVersion	5.18
+Contact:	Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+		(Write) Run integration test for tpdm. Integration test
+		will generate test data for tpdm. It can help to make
+		sure that the trace path is enabled and the link configurations
+		are fine.
+
+		value to this sysfs node:
+		1 : Generate 64 bits data
+		2 : Generate 32 bits data
-- 
2.17.1


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[PATCH v10 07/10] Coresight: Add TPDA link driver

[Mao Jinlong]

TPDA(Trace, Profiling and Diagnostics Aggregator) is
to provide packetization, funneling and timestamping of
TPDM data. Multiple monitors are connected to different
input ports of TPDA.This change is to add tpda
enable/disable/probe functions for coresight tpda driver.

 - - - -         - - - -        - - - -
| TPDM 0|      | TPDM 1 |     | TPDM 2|
 - - - -         - - - -        - - - -
    |               |             |
    |_ _ _ _ _ _    |     _ _ _ _ |
                |   |    |
                |   |    |
           ------------------
          |        TPDA      |
           ------------------

Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 drivers/hwtracing/coresight/Kconfig          |  11 +
 drivers/hwtracing/coresight/Makefile         |   1 +
 drivers/hwtracing/coresight/coresight-tpda.c | 206 +++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tpda.h |  35 ++++
 4 files changed, 253 insertions(+)
 create mode 100644 drivers/hwtracing/coresight/coresight-tpda.c
 create mode 100644 drivers/hwtracing/coresight/coresight-tpda.h

diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index b2b72a35e416..0cbebfd0d23e 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -205,6 +205,7 @@ config CORESIGHT_TRBE
 config CORESIGHT_TPDM
 	tristate "CoreSight Trace, Profiling & Diagnostics Monitor driver"
 	select CORESIGHT_LINKS_AND_SINKS
+	select CORESIGHT_TPDA
 	help
 	  This driver provides support for configuring monitor. Monitors are
 	  primarily responsible for data set collection and support the
@@ -213,4 +214,14 @@ config CORESIGHT_TPDM
 	  To compile this driver as a module, choose M here: the module will be
 	  called coresight-tpdm.
 
+config CORESIGHT_TPDA
+	tristate "CoreSight Trace, Profiling & Diagnostics Aggregator driver"
+	help
+	  This driver provides support for configuring aggregator. This is
+	  primarily useful for pulling the data sets from one or more
+	  attached monitors and pushing the resultant data out. Multiple
+	  monitors are connected on different input ports of TPDA.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called coresight-tpda.
 endif
diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile
index 6bb9b1746bc7..1712d82e7260 100644
--- a/drivers/hwtracing/coresight/Makefile
+++ b/drivers/hwtracing/coresight/Makefile
@@ -26,5 +26,6 @@ obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o
 obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o
 obj-$(CONFIG_CORESIGHT_TRBE) += coresight-trbe.o
 obj-$(CONFIG_CORESIGHT_TPDM) += coresight-tpdm.o
+obj-$(CONFIG_CORESIGHT_TPDA) += coresight-tpda.o
 coresight-cti-y := coresight-cti-core.o	coresight-cti-platform.o \
 		   coresight-cti-sysfs.o
diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c
new file mode 100644
index 000000000000..a6268db685c2
--- /dev/null
+++ b/drivers/hwtracing/coresight/coresight-tpda.c
@@ -0,0 +1,206 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/amba/bus.h>
+#include <linux/bitfield.h>
+#include <linux/coresight.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include "coresight-priv.h"
+#include "coresight-tpda.h"
+#include "coresight-trace-id.h"
+
+DEFINE_CORESIGHT_DEVLIST(tpda_devs, "tpda");
+
+/* Settings pre enabling port control register */
+static void tpda_enable_pre_port(struct tpda_drvdata *drvdata)
+{
+	u32 val;
+
+	val = readl_relaxed(drvdata->base + TPDA_CR);
+	val |= FIELD_PREP(TPDA_CR_ATID, drvdata->atid);
+	writel_relaxed(val, drvdata->base + TPDA_CR);
+}
+
+static void tpda_enable_port(struct tpda_drvdata *drvdata, int port)
+{
+	u32 val;
+
+	val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port));
+	/* Enable the port */
+	val |= TPDA_Pn_CR_ENA;
+	writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port));
+}
+
+static void __tpda_enable(struct tpda_drvdata *drvdata, int port)
+{
+	CS_UNLOCK(drvdata->base);
+
+	if (!drvdata->csdev->enable)
+		tpda_enable_pre_port(drvdata);
+
+	tpda_enable_port(drvdata, port);
+
+	CS_LOCK(drvdata->base);
+}
+
+static int tpda_enable(struct coresight_device *csdev, int inport, int outport)
+{
+	struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+	spin_lock(&drvdata->spinlock);
+	if (atomic_read(&csdev->refcnt[inport]) == 0)
+		__tpda_enable(drvdata, inport);
+
+	atomic_inc(&csdev->refcnt[inport]);
+	spin_unlock(&drvdata->spinlock);
+
+	dev_info(drvdata->dev, "TPDA inport %d enabled.\n", inport);
+	return 0;
+}
+
+static void __tpda_disable(struct tpda_drvdata *drvdata, int port)
+{
+	u32 val;
+
+	CS_UNLOCK(drvdata->base);
+
+	val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port));
+	val &= ~TPDA_Pn_CR_ENA;
+	writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port));
+
+	CS_LOCK(drvdata->base);
+}
+
+static void tpda_disable(struct coresight_device *csdev, int inport,
+			   int outport)
+{
+	struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+	spin_lock(&drvdata->spinlock);
+	if (atomic_dec_return(&csdev->refcnt[inport]) == 0)
+		__tpda_disable(drvdata, inport);
+
+	spin_unlock(&drvdata->spinlock);
+
+	dev_info(drvdata->dev, "TPDA inport %d disabled\n", inport);
+}
+
+static const struct coresight_ops_link tpda_link_ops = {
+	.enable		= tpda_enable,
+	.disable	= tpda_disable,
+};
+
+static const struct coresight_ops tpda_cs_ops = {
+	.link_ops	= &tpda_link_ops,
+};
+
+static int tpda_init_default_data(struct tpda_drvdata *drvdata)
+{
+	int atid;
+	/*
+	 * TPDA must has a unique atid. This atid can uniquely
+	 * identify the TPDM trace source connected to the TPDA.
+	 */
+	atid = coresight_trace_id_get_system_id(coresight_get_trace_id_map());
+	if (atid < 0)
+		return atid;
+
+	drvdata->atid = atid;
+	return 0;
+}
+
+static int tpda_probe(struct amba_device *adev, const struct amba_id *id)
+{
+	int ret;
+	struct device *dev = &adev->dev;
+	struct coresight_platform_data *pdata;
+	struct tpda_drvdata *drvdata;
+	struct coresight_desc desc = { 0 };
+	void __iomem *base;
+
+	pdata = coresight_get_platform_data(dev);
+	if (IS_ERR(pdata))
+		return PTR_ERR(pdata);
+	adev->dev.platform_data = pdata;
+
+	drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+	if (!drvdata)
+		return -ENOMEM;
+
+	drvdata->dev = &adev->dev;
+	dev_set_drvdata(dev, drvdata);
+
+	base = devm_ioremap_resource(dev, &adev->res);
+	if (!base)
+		return -ENOMEM;
+	drvdata->base = base;
+
+	spin_lock_init(&drvdata->spinlock);
+
+	ret = tpda_init_default_data(drvdata);
+	if (ret)
+		return ret;
+
+	desc.name = coresight_alloc_device_name(&tpda_devs, dev);
+	if (!desc.name)
+		return -ENOMEM;
+	desc.type = CORESIGHT_DEV_TYPE_LINK;
+	desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG;
+	desc.ops = &tpda_cs_ops;
+	desc.pdata = adev->dev.platform_data;
+	desc.dev = &adev->dev;
+	desc.access = CSDEV_ACCESS_IOMEM(base);
+	drvdata->csdev = coresight_register(&desc);
+	if (IS_ERR(drvdata->csdev))
+		return PTR_ERR(drvdata->csdev);
+
+	pm_runtime_put(&adev->dev);
+
+	dev_dbg(drvdata->dev, "TPDA initialized\n");
+	return 0;
+}
+
+static void __exit tpda_remove(struct amba_device *adev)
+{
+	struct tpda_drvdata *drvdata = dev_get_drvdata(&adev->dev);
+
+	coresight_unregister(drvdata->csdev);
+}
+
+/*
+ * Different TPDA has different periph id.
+ * The difference is 0-7 bits' value. So ignore 0-7 bits.
+ */
+static struct amba_id tpda_ids[] = {
+	{
+		.id     = 0x000f0f00,
+		.mask   = 0x000fff00,
+	},
+	{ 0, 0},
+};
+
+static struct amba_driver tpda_driver = {
+	.drv = {
+		.name   = "coresight-tpda",
+		.owner	= THIS_MODULE,
+		.suppress_bind_attrs = true,
+	},
+	.probe          = tpda_probe,
+	.remove		= tpda_remove,
+	.id_table	= tpda_ids,
+};
+
+module_amba_driver(tpda_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Trace, Profiling & Diagnostic Aggregator driver");
diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtracing/coresight/coresight-tpda.h
new file mode 100644
index 000000000000..4beb33263c96
--- /dev/null
+++ b/drivers/hwtracing/coresight/coresight-tpda.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef _CORESIGHT_CORESIGHT_TPDA_H
+#define _CORESIGHT_CORESIGHT_TPDA_H
+
+#define TPDA_CR			(0x000)
+#define TPDA_Pn_CR(n)		(0x004 + (n * 4))
+/* Aggregator port enable bit */
+#define TPDA_Pn_CR_ENA		BIT(0)
+
+#define TPDA_MAX_INPORTS	32
+
+/* Bits 6 ~ 12 is for atid value */
+#define TPDA_CR_ATID		GENMASK(12, 6)
+
+/**
+ * struct tpda_drvdata - specifics associated to an TPDA component
+ * @base:       memory mapped base address for this component.
+ * @dev:        The device entity associated to this component.
+ * @csdev:      component vitals needed by the framework.
+ * @spinlock:   lock for the drvdata value.
+ * @enable:     enable status of the component.
+ */
+struct tpda_drvdata {
+	void __iomem		*base;
+	struct device		*dev;
+	struct coresight_device	*csdev;
+	spinlock_t		spinlock;
+	u8			atid;
+};
+
+#endif  /* _CORESIGHT_CORESIGHT_TPDA_H */
-- 
2.17.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v10 08/10] dt-bindings: arm: Adds CoreSight TPDA hardware definitions

[Mao Jinlong]

Adds new coresight-tpda.yaml file describing the bindings required
to define tpda in the device trees.

Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 .../bindings/arm/qcom,coresight-tpda.yaml     | 111 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 112 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
new file mode 100644
index 000000000000..eb9bfc5f93a2
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,coresight-tpda.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trace, Profiling and Diagnostics Aggregator - TPDA
+
+description: |
+  TPDAs are responsible for packetization and timestamping of data sets
+  utilizing the MIPI STPv2 packet protocol. Pulling data sets from one or
+  more attached TPDM and pushing the resultant (packetized) data out a
+  master ATB interface. Performing an arbitrated ATB interleaving (funneling)
+  task for free-flowing data from TPDM (i.e. CMB and DSB data set flows).
+
+maintainers:
+  - Mao Jinlong <quic_jinlmao@quicinc.com>
+  - Tao Zhang <quic_taozha@quicinc.com>
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,coresight-tpda
+  required:
+    - compatible
+
+properties:
+  $nodename:
+    pattern: "^tpda(@[0-9a-f]+)$"
+  compatible:
+    items:
+      - const: qcom,coresight-tpda
+      - const: arm,primecell
+
+  reg:
+    minItems: 1
+    maxItems: 2
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: apb_pclk
+
+  in-ports:
+    type: object
+    description: |
+      Input connections from TPDM to TPDA
+    $ref: /schemas/graph.yaml#/properties/ports
+
+  out-ports:
+    type: object
+    description: |
+      Output connections from the TPDA to legacy CoreSight trace bus.
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port:
+        description:
+          Output connection from the TPDA to legacy CoreSight Trace bus.
+        $ref: /schemas/graph.yaml#/properties/port
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - in-ports
+  - out-ports
+
+additionalProperties: false
+
+examples:
+  # minimum tpda definition.
+  - |
+    tpda@6004000 {
+       compatible = "qcom,coresight-tpda", "arm,primecell";
+       reg = <0x6004000 0x1000>;
+
+       clocks = <&aoss_qmp>;
+       clock-names = "apb_pclk";
+
+       in-ports {
+         #address-cells = <1>;
+         #size-cells = <0>;
+
+        port@0 {
+          reg = <0>;
+          tpda_qdss_0_in_tpdm_dcc: endpoint {
+            remote-endpoint =
+              <&tpdm_dcc_out_tpda_qdss_0>;
+            };
+        };
+      };
+
+       out-ports {
+         port {
+                 tpda_qdss_out_funnel_in0: endpoint {
+                    remote-endpoint =
+                    <&funnel_in0_in_tpda_qdss>;
+                  };
+          };
+       };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index e6a8dc714af7..a181c73e1a01 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1979,6 +1979,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
 F:	Documentation/ABI/testing/sysfs-bus-coresight-devices-*
 F:	Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt
 F:	Documentation/devicetree/bindings/arm/coresight-cti.yaml
+F:	Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
 F:	Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
 F:	Documentation/devicetree/bindings/arm/coresight.txt
 F:	Documentation/devicetree/bindings/arm/ete.yaml
-- 
2.17.1


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v10 09/10] arm64: dts: qcom: sm8250: Add coresight components

[Mao Jinlong]

Add coresight components for sm8250. STM/ETM are added.

Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 498 +++++++++++++++++++++++++++
 1 file changed, 498 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index dc2562070336..e0193907c498 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -2713,6 +2713,504 @@
 			};
 		};
 
+		stm@6002000 {
+			compatible = "arm,coresight-stm", "arm,primecell";
+			reg = <0 0x06002000 0 0x1000>, <0 0x16280000 0 0x180000>;
+			reg-names = "stm-base", "stm-stimulus-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					stm_out: endpoint {
+						remote-endpoint = <&funnel0_in7>;
+					};
+				};
+			};
+		};
+
+		funnel@6041000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			reg = <0 0x06041000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					funnel_in0_out_funnel_merg: endpoint {
+						remote-endpoint = <&funnel_merg_in_funnel_in0>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@7 {
+					reg = <7>;
+					funnel0_in7: endpoint {
+						remote-endpoint = <&stm_out>;
+					};
+				};
+			};
+		};
+
+		funnel@6042000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			reg = <0 0x06042000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					funnel_in1_out_funnel_merg: endpoint {
+						remote-endpoint = <&funnel_merg_in_funnel_in1>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@4 {
+					reg = <4>;
+					funnel_in1_in_funnel_apss_merg: endpoint {
+					remote-endpoint = <&funnel_apss_merg_out_funnel_in1>;
+					};
+				};
+			};
+		};
+
+		funnel@6045000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			reg = <0 0x06045000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					funnel_merg_out_funnel_swao: endpoint {
+					remote-endpoint = <&funnel_swao_in_funnel_merg>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					funnel_merg_in_funnel_in0: endpoint {
+					remote-endpoint = <&funnel_in0_out_funnel_merg>;
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+					funnel_merg_in_funnel_in1: endpoint {
+					remote-endpoint = <&funnel_in1_out_funnel_merg>;
+					};
+				};
+			};
+		};
+
+		replicator@6046000 {
+			compatible = "arm,coresight-dynamic-replicator", "arm,primecell";
+			reg = <0 0x06046000 0 0x1000>;
+
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					replicator_out: endpoint {
+						remote-endpoint = <&etr_in>;
+					};
+				};
+			};
+
+			in-ports {
+				port {
+					replicator_cx_in_swao_out: endpoint {
+						remote-endpoint = <&replicator_swao_out_cx_in>;
+					};
+				};
+			};
+		};
+
+		etr@6048000 {
+			compatible = "arm,coresight-tmc", "arm,primecell";
+			reg = <0 0x06048000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,scatter-gather;
+
+			in-ports {
+				port {
+					etr_in: endpoint {
+						remote-endpoint = <&replicator_out>;
+					};
+				};
+			};
+		};
+
+		funnel@6b04000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			arm,primecell-periphid = <0x000bb908>;
+
+			reg = <0 0x06b04000 0 0x1000>;
+			reg-names = "funnel-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					funnel_swao_out_etf: endpoint {
+						remote-endpoint = <&etf_in_funnel_swao_out>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@7 {
+					reg = <7>;
+					funnel_swao_in_funnel_merg: endpoint {
+						remote-endpoint= <&funnel_merg_out_funnel_swao>;
+					};
+				};
+			};
+
+		};
+
+		etf@6b05000 {
+			compatible = "arm,coresight-tmc", "arm,primecell";
+			reg = <0 0x06b05000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					etf_out: endpoint {
+						remote-endpoint = <&replicator_in>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					etf_in_funnel_swao_out: endpoint {
+						remote-endpoint = <&funnel_swao_out_etf>;
+					};
+				};
+			};
+		};
+
+		replicator@6b06000 {
+			compatible = "arm,coresight-dynamic-replicator", "arm,primecell";
+			reg = <0 0x06b06000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					replicator_swao_out_cx_in: endpoint {
+						remote-endpoint = <&replicator_cx_in_swao_out>;
+					};
+				};
+			};
+
+			in-ports {
+				port {
+					replicator_in: endpoint {
+						remote-endpoint = <&etf_out>;
+					};
+				};
+			};
+		};
+
+		etm@7040000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07040000 0 0x1000>;
+
+			cpu = <&CPU0>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm0_out: endpoint {
+						remote-endpoint = <&apss_funnel_in0>;
+					};
+				};
+			};
+		};
+
+		etm@7140000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07140000 0 0x1000>;
+
+			cpu = <&CPU1>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm1_out: endpoint {
+						remote-endpoint = <&apss_funnel_in1>;
+					};
+				};
+			};
+		};
+
+		etm@7240000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07240000 0 0x1000>;
+
+			cpu = <&CPU2>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm2_out: endpoint {
+						remote-endpoint = <&apss_funnel_in2>;
+					};
+				};
+			};
+		};
+
+		etm@7340000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07340000 0 0x1000>;
+
+			cpu = <&CPU3>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm3_out: endpoint {
+						remote-endpoint = <&apss_funnel_in3>;
+					};
+				};
+			};
+		};
+
+		etm@7440000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07440000 0 0x1000>;
+
+			cpu = <&CPU4>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm4_out: endpoint {
+						remote-endpoint = <&apss_funnel_in4>;
+					};
+				};
+			};
+		};
+
+		etm@7540000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07540000 0 0x1000>;
+
+			cpu = <&CPU5>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm5_out: endpoint {
+						remote-endpoint = <&apss_funnel_in5>;
+					};
+				};
+			};
+		};
+
+		etm@7640000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07640000 0 0x1000>;
+
+			cpu = <&CPU6>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm6_out: endpoint {
+						remote-endpoint = <&apss_funnel_in6>;
+					};
+				};
+			};
+		};
+
+		etm@7740000 {
+			compatible = "arm,coresight-etm4x", "arm,primecell";
+			reg = <0 0x07740000 0 0x1000>;
+
+			cpu = <&CPU7>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
+
+			out-ports {
+				port {
+					etm7_out: endpoint {
+						remote-endpoint = <&apss_funnel_in7>;
+					};
+				};
+			};
+		};
+
+		funnel@7800000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			reg = <0 0x07800000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					funnel_apss_out_funnel_apss_merg: endpoint {
+					remote-endpoint = <&funnel_apss_merg_in_funnel_apss>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					apss_funnel_in0: endpoint {
+						remote-endpoint = <&etm0_out>;
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+					apss_funnel_in1: endpoint {
+						remote-endpoint = <&etm1_out>;
+					};
+				};
+
+				port@2 {
+					reg = <2>;
+					apss_funnel_in2: endpoint {
+						remote-endpoint = <&etm2_out>;
+					};
+				};
+
+				port@3 {
+					reg = <3>;
+					apss_funnel_in3: endpoint {
+						remote-endpoint = <&etm3_out>;
+					};
+				};
+
+				port@4 {
+					reg = <4>;
+					apss_funnel_in4: endpoint {
+						remote-endpoint = <&etm4_out>;
+					};
+				};
+
+				port@5 {
+					reg = <5>;
+					apss_funnel_in5: endpoint {
+						remote-endpoint = <&etm5_out>;
+					};
+				};
+
+				port@6 {
+					reg = <6>;
+					apss_funnel_in6: endpoint {
+						remote-endpoint = <&etm6_out>;
+					};
+				};
+
+				port@7 {
+					reg = <7>;
+					apss_funnel_in7: endpoint {
+						remote-endpoint = <&etm7_out>;
+					};
+				};
+			};
+		};
+
+		funnel@7810000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+			reg = <0 0x07810000 0 0x1000>;
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port {
+					funnel_apss_merg_out_funnel_in1: endpoint {
+					remote-endpoint = <&funnel_in1_in_funnel_apss_merg>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					funnel_apss_merg_in_funnel_apss: endpoint {
+					remote-endpoint = <&funnel_apss_out_funnel_apss_merg>;
+					};
+				};
+			};
+		};
+
 		cdsp: remoteproc@8300000 {
 			compatible = "qcom,sm8250-cdsp-pas";
 			reg = <0 0x08300000 0 0x10000>;
-- 
2.17.1


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[PATCH v10 10/10] arm64: dts: qcom: sm8250: Add tpdm mm/prng

[Mao Jinlong]

Add tpdm mm and tpdm prng for sm8250.

+---------------+                +-------------+
|  tpdm@6c08000 |                |tpdm@684C000 |
+-------|-------+                +------|------+
        |                               |
+-------|-------+                       |
| funnel@6c0b000|                       |
+-------|-------+                       |
        |                               |
+-------|-------+                       |
|funnel@6c2d000 |                       |
+-------|-------+                       |
        |                               |
        |    +---------------+          |
        +----- tpda@6004000  -----------+
             +-------|-------+
                     |
             +-------|-------+
             |funnel@6005000 |
             +---------------+

Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 173 +++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index e0193907c498..4456ef8bb167 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -2730,6 +2730,76 @@
 			};
 		};
 
+		tpda@6004000 {
+			compatible = "arm,primecell";
+			reg = <0 0x06004000 0 0x1000>;
+			reg-names = "tpda-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					tpda_out_funnel_qatb: endpoint {
+						remote-endpoint = <&funnel_qatb_in_tpda>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@9 {
+					reg = <9>;
+					tpda_9_in_tpdm_mm: endpoint {
+						remote-endpoint = <&tpdm_mm_out_tpda9>;
+					};
+				};
+
+				port@17 {
+					reg = <23>;
+					tpda_23_in_tpdm_prng: endpoint {
+						remote-endpoint = <&tpdm_prng_out_tpda_23>;
+					};
+				};
+			};
+		};
+
+		funnel@6005000 {
+			compatible = "arm,primecell";
+
+			reg = <0 0x06005000 0 0x1000>;
+			reg-names = "funnel-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					funnel_qatb_out_funnel_in0: endpoint {
+						remote-endpoint = <&funnel_in0_in_funnel_qatb>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					funnel_qatb_in_tpda: endpoint {
+						remote-endpoint = <&tpda_out_funnel_qatb>;
+					};
+				};
+			};
+		};
+
 		funnel@6041000 {
 			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
 			reg = <0 0x06041000 0 0x1000>;
@@ -2749,6 +2819,13 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 
+				port@6 {
+					reg = <6>;
+					funnel_in0_in_funnel_qatb: endpoint {
+						remote-endpoint = <&funnel_qatb_out_funnel_in0>;
+					};
+				};
+
 				port@7 {
 					reg = <7>;
 					funnel0_in7: endpoint {
@@ -2867,6 +2944,23 @@
 			};
 		};
 
+		tpdm@684c000 {
+			compatible = "arm,primecell";
+			reg = <0 0x0684c000 0 0x1000>;
+			reg-names = "tpdm-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					tpdm_prng_out_tpda_23: endpoint {
+						remote-endpoint = <&tpda_23_in_tpdm_prng>;
+					};
+				};
+			};
+		};
+
 		funnel@6b04000 {
 			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
 			arm,primecell-periphid = <0x000bb908>;
@@ -2951,6 +3045,85 @@
 			};
 		};
 
+		tpdm@6c08000 {
+			compatible = "arm,primecell";
+			reg = <0 0x06c08000 0 0x1000>;
+			reg-names = "tpdm-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					tpdm_mm_out_funnel_dl_mm: endpoint {
+						remote-endpoint = <&funnel_dl_mm_in_tpdm_mm>;
+					};
+				};
+			};
+		};
+
+		funnel@6c0b000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+
+			reg = <0 0x06c0b000 0 0x1000>;
+			reg-names = "funnel-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				port {
+					funnel_dl_mm_out_funnel_dl_center: endpoint {
+					remote-endpoint = <&funnel_dl_center_in_funnel_dl_mm>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@3 {
+					reg = <3>;
+					funnel_dl_mm_in_tpdm_mm: endpoint {
+						remote-endpoint = <&tpdm_mm_out_funnel_dl_mm>;
+					};
+				};
+			};
+		};
+
+		funnel@6c2d000 {
+			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+
+			reg = <0 0x06c2d000 0 0x1000>;
+			reg-names = "funnel-base";
+
+			clocks = <&aoss_qmp>;
+			clock-names = "apb_pclk";
+
+			out-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				port {
+					tpdm_mm_out_tpda9: endpoint {
+						remote-endpoint = <&tpda_9_in_tpdm_mm>;
+					};
+				};
+			};
+
+			in-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@2 {
+					reg = <2>;
+					funnel_dl_center_in_funnel_dl_mm: endpoint {
+					remote-endpoint = <&funnel_dl_mm_out_funnel_dl_center>;
+					};
+				};
+			};
+		};
+
 		etm@7040000 {
 			compatible = "arm,coresight-etm4x", "arm,primecell";
 			reg = <0 0x07040000 0 0x1000>;
-- 
2.17.1


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Re: [PATCH v10 03/10] dt-bindings: arm: Adds CoreSight TPDM hardware definitions

[Rob Herring]

On Sat, 11 Jun 2022 08:43:24 +0800, Mao Jinlong wrote:
> Adds new coresight-tpdm.yaml file describing the bindings required
> to define tpdm in the device trees.
> 
> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> Reviewed-by: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
> Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
> ---
>  .../bindings/arm/qcom,coresight-tpdm.yaml     | 93 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 94 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>

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Re: [PATCH v10 08/10] dt-bindings: arm: Adds CoreSight TPDA hardware definitions

[Rob Herring]

On Sat, 11 Jun 2022 08:43:29 +0800, Mao Jinlong wrote:
> Adds new coresight-tpda.yaml file describing the bindings required
> to define tpda in the device trees.
> 
> Reviewed-by: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
> Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
> ---
>  .../bindings/arm/qcom,coresight-tpda.yaml     | 111 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 112 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>

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Re: [PATCH v10 02/10] Coresight: Add coresight TPDM source driver

[Suzuki K Poulose]

On 11/06/2022 01:43, Mao Jinlong wrote:
> Add driver to support Coresight device TPDM (Trace, Profiling and
> Diagnostics Monitor). TPDM is a monitor to collect data from
> different datasets. This change is to add probe/enable/disable
> functions for tpdm source.
> 
> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
> Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
> ---
>   drivers/hwtracing/coresight/Kconfig          |  12 ++
>   drivers/hwtracing/coresight/Makefile         |   1 +
>   drivers/hwtracing/coresight/coresight-core.c |   5 +-
>   drivers/hwtracing/coresight/coresight-tpdm.c | 149 +++++++++++++++++++
>   drivers/hwtracing/coresight/coresight-tpdm.h |  26 ++++
>   include/linux/coresight.h                    |   1 +
>   6 files changed, 193 insertions(+), 1 deletion(-)
>   create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.c
>   create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.h
> 
> diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
> index 514a9b8086e3..b2b72a35e416 100644
> --- a/drivers/hwtracing/coresight/Kconfig
> +++ b/drivers/hwtracing/coresight/Kconfig
> @@ -201,4 +201,16 @@ config CORESIGHT_TRBE
>   
>   	  To compile this driver as a module, choose M here: the module will be
>   	  called coresight-trbe.
> +
> +config CORESIGHT_TPDM
> +	tristate "CoreSight Trace, Profiling & Diagnostics Monitor driver"
> +	select CORESIGHT_LINKS_AND_SINKS
> +	help
> +	  This driver provides support for configuring monitor. Monitors are
> +	  primarily responsible for data set collection and support the
> +	  ability to collect any permutation of data set types.
> +
> +	  To compile this driver as a module, choose M here: the module will be
> +	  called coresight-tpdm.
> +
>   endif
> diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile
> index 329a0c704b87..6bb9b1746bc7 100644
> --- a/drivers/hwtracing/coresight/Makefile
> +++ b/drivers/hwtracing/coresight/Makefile
> @@ -25,5 +25,6 @@ obj-$(CONFIG_CORESIGHT_CPU_DEBUG) += coresight-cpu-debug.o
>   obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o
>   obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o
>   obj-$(CONFIG_CORESIGHT_TRBE) += coresight-trbe.o
> +obj-$(CONFIG_CORESIGHT_TPDM) += coresight-tpdm.o
>   coresight-cti-y := coresight-cti-core.o	coresight-cti-platform.o \
>   		   coresight-cti-sysfs.o
> diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
> index 23ab16dd9b5d..1d2b5b84bb5d 100644
> --- a/drivers/hwtracing/coresight/coresight-core.c
> +++ b/drivers/hwtracing/coresight/coresight-core.c
> @@ -1047,7 +1047,8 @@ static int coresight_validate_source(struct coresight_device *csdev,
>   	}
>   
>   	if (subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_PROC &&
> -	    subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE) {
> +	    subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE &&
> +	    subtype != CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS) {
>   		dev_err(&csdev->dev, "wrong device subtype in %s\n", function);
>   		return -EINVAL;
>   	}
> @@ -1116,6 +1117,7 @@ int coresight_enable(struct coresight_device *csdev)
>   		per_cpu(tracer_path, cpu) = path;
>   		break;
>   	case CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE:
> +	case CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS:
>   		/*
>   		 * Use the hash of source's device name as ID
>   		 * and map the ID to the pointer of the path.
> @@ -1165,6 +1167,7 @@ void coresight_disable(struct coresight_device *csdev)
>   		per_cpu(tracer_path, cpu) = NULL;
>   		break;
>   	case CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE:
> +	case CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS:
>   		hash = hashlen_hash(hashlen_string(NULL, dev_name(&csdev->dev)));
>   		/* Find the path by the hash. */
>   		path = idr_find(&path_idr, hash);
> diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
> new file mode 100644
> index 000000000000..eb8998affa90
> --- /dev/null
> +++ b/drivers/hwtracing/coresight/coresight-tpdm.c
> @@ -0,0 +1,149 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +#include <linux/amba/bus.h>
> +#include <linux/bitmap.h>
> +#include <linux/coresight.h>
> +#include <linux/coresight-pmu.h>
> +#include <linux/device.h>
> +#include <linux/err.h>
> +#include <linux/fs.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +
> +#include "coresight-priv.h"
> +#include "coresight-tpdm.h"
> +
> +DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm");
> +
> +/* TPDM enable operations */
> +static int tpdm_enable(struct coresight_device *csdev,
> +		       struct perf_event *event, u32 mode)
> +{
> +	struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
> +
> +	spin_lock(&drvdata->spinlock);
> +	if (drvdata->enable) {
> +		spin_unlock(&drvdata->spinlock);
> +		return -EBUSY;
> +	}
> +
> +	drvdata->enable = true;
> +	spin_unlock(&drvdata->spinlock);
> +
> +	dev_info(drvdata->dev, "TPDM tracing enabled\n");

Please make all of these dev_dbg(). We don't want these messages
flooding the dmesg for everytime the device is turned on/off.

> +	return 0;
> +}
> +
> +/* TPDM disable operations */
> +static void tpdm_disable(struct coresight_device *csdev,
> +			 struct perf_event *event)
> +{
> +	struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
> +
> +	spin_lock(&drvdata->spinlock);
> +	if (!drvdata->enable) {
> +		spin_unlock(&drvdata->spinlock);
> +		return;
> +	}
> +
> +	drvdata->enable = false;
> +	spin_unlock(&drvdata->spinlock);
> +
> +	dev_info(drvdata->dev, "TPDM tracing disabled\n");

Same as above. Otherwise looks good to me.

Suzuki

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Re: [PATCH v10 04/10] coresight-tpdm: Add DSB dataset support

[Suzuki K Poulose]

On 11/06/2022 01:43, Mao Jinlong wrote:
> TPDM serves as data collection component for various dataset types.
> DSB(Discrete Single Bit) is one of the dataset types. DSB subunit
> can be enabled for data collection by writing 1 to the first bit of
> DSB_CR register. This change is to add enable/disable function for
> DSB dataset by writing DSB_CR register.
> 
> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
> Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>

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Re: [PATCH v10 06/10] docs: sysfs: coresight: Add sysfs ABI documentation for TPDM

[Suzuki K Poulose]

On 11/06/2022 01:43, Mao Jinlong wrote:
> Add API usage document for sysfs API in TPDM driver.
> 
> Reviewed-by: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
> ---
>   .../ABI/testing/sysfs-bus-coresight-devices-tpdm    | 13 +++++++++++++
>   1 file changed, 13 insertions(+)
>   create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
> new file mode 100644
> index 000000000000..92bc09fbb69b
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
> @@ -0,0 +1,13 @@
> +What:		/sys/bus/coresight/devices/<tpdm-name>/integration_test
> +Date:		June 2022
> +KernelVersion	5.18

We have gone past this release. Please make this 5.20. Also, please 
merge this patch with the previous patch.

> +Contact:	Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
> +Description:
> +		(Write) Run integration test for tpdm. Integration test
> +		will generate test data for tpdm. It can help to make
> +		sure that the trace path is enabled and the link configurations
> +		are fine.
> +
> +		value to this sysfs node:

This is not entirely clear to me/reader. Could we say :

		Accepts only one of the 2 values -  1 or 2.
	
> +		1 : Generate 64 bits data
> +		2 : Generate 32 bits data


Suzuki

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