[PATCH v3 01/18] coresight replicator: Cleanup programmable replicator naming

From: Suzuki K Poulose
Date: Fri Jul 14 2017 - 09:05:35 EST

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The Linux coresight drivers define the programmable ATB replicator as
Qualcomm replicator, while this is designed by ARM. This can cause confusion
to a user selecting the driver. Cleanup all references to make it
explicitly clear. This patch :

1) Replace the compatible string for the replicator :
qcom,coresight-replicator1x => arm,coresight-dynamic-replicator
2) Changes the Kconfig symbol (since this is not part of any defconfigs)
CORESIGHT_QCOM_REPLICATOR => CORESIGHT_DYNAMIC_REPLICATOR
3) Improves the help message in the Kconfig.
4) Changes the name of the driver and the file :
coresight-replicator-qcom => coresight-dynamic-replicator

Cc: Pratik Patel <pratikp@xxxxxxxxxxxxxx>
Cc: Ivan T. Ivanov <ivan.ivanov@xxxxxxxxxx>
Cc: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Acked-by: Rob Herring <robh+dt@xxxxxxxxxx>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
---
Changes since V1:
- Since the driver doesn't use the compatible string, change the
recommended compatible string.
- Rename the driver file to coresight-dynamic-replicator.c
---
.../devicetree/bindings/arm/coresight.txt | 4 +-
drivers/hwtracing/coresight/Kconfig | 10 +-
drivers/hwtracing/coresight/Makefile | 2 +-
.../coresight/coresight-dynamic-replicator.c | 195 ++++++++++++++++++++
.../coresight/coresight-replicator-qcom.c | 196 ---------------------
5 files changed, 203 insertions(+), 204 deletions(-)
create mode 100644 drivers/hwtracing/coresight/coresight-dynamic-replicator.c
delete mode 100644 drivers/hwtracing/coresight/coresight-replicator-qcom.c

diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
index fcbae6a..15ac8e8 100644
--- a/Documentation/devicetree/bindings/arm/coresight.txt
+++ b/Documentation/devicetree/bindings/arm/coresight.txt
@@ -34,8 +34,8 @@ its hardware characteristcs.
- Embedded Trace Macrocell (version 4.x):
"arm,coresight-etm4x", "arm,primecell";

- - Qualcomm Configurable Replicator (version 1.x):
- "qcom,coresight-replicator1x", "arm,primecell";
+ - Coresight programmable Replicator :
+ "arm,coresight-dynamic-replicator", "arm,primecell";

- System Trace Macrocell:
"arm,coresight-stm", "arm,primecell"; [1]
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index 8d55d6d..ef9cb3c 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -70,13 +70,13 @@ config CORESIGHT_SOURCE_ETM4X
for instruction level tracing. Depending on the implemented version
data tracing may also be available.

-config CORESIGHT_QCOM_REPLICATOR
- bool "Qualcomm CoreSight Replicator driver"
+config CORESIGHT_DYNAMIC_REPLICATOR
+ bool "CoreSight Programmable Replicator driver"
depends on CORESIGHT_LINKS_AND_SINKS
help
- This enables support for Qualcomm CoreSight link driver. The
- programmable ATB replicator sends the ATB trace stream from the
- ETB/ETF to the TPIUi and ETR.
+ This enables support for dynamic CoreSight replicator link driver.
+ The programmable ATB replicator allows independent filtering of the
+ trace data based on the traceid.

config CORESIGHT_STM
bool "CoreSight System Trace Macrocell driver"
diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile
index 433d590..5bae90ce 100644
--- a/drivers/hwtracing/coresight/Makefile
+++ b/drivers/hwtracing/coresight/Makefile
@@ -14,6 +14,6 @@ obj-$(CONFIG_CORESIGHT_SOURCE_ETM3X) += coresight-etm3x.o coresight-etm-cp14.o \
coresight-etm3x-sysfs.o
obj-$(CONFIG_CORESIGHT_SOURCE_ETM4X) += coresight-etm4x.o \
coresight-etm4x-sysfs.o
-obj-$(CONFIG_CORESIGHT_QCOM_REPLICATOR) += coresight-replicator-qcom.o
+obj-$(CONFIG_CORESIGHT_DYNAMIC_REPLICATOR) += coresight-dynamic-replicator.o
obj-$(CONFIG_CORESIGHT_STM) += coresight-stm.o
obj-$(CONFIG_CORESIGHT_CPU_DEBUG) += coresight-cpu-debug.o
diff --git a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c
new file mode 100644
index 0000000..1675031
--- /dev/null
+++ b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/amba/bus.h>
+#include <linux/clk.h>
+#include <linux/coresight.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#include "coresight-priv.h"
+
+#define REPLICATOR_IDFILTER0 0x000
+#define REPLICATOR_IDFILTER1 0x004
+
+/**
+ * struct replicator_state - specifics associated to a replicator component
+ * @base: memory mapped base address for this component.
+ * @dev: the device entity associated with this component
+ * @atclk: optional clock for the core parts of the replicator.
+ * @csdev: component vitals needed by the framework
+ */
+struct replicator_state {
+ void __iomem *base;
+ struct device *dev;
+ struct clk *atclk;
+ struct coresight_device *csdev;
+};
+
+static int replicator_enable(struct coresight_device *csdev, int inport,
+ int outport)
+{
+ struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+ CS_UNLOCK(drvdata->base);
+
+ /*
+ * Ensure that the other port is disabled
+ * 0x00 - passing through the replicator unimpeded
+ * 0xff - disable (or impede) the flow of ATB data
+ */
+ if (outport == 0) {
+ writel_relaxed(0x00, drvdata->base + REPLICATOR_IDFILTER0);
+ writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER1);
+ } else {
+ writel_relaxed(0x00, drvdata->base + REPLICATOR_IDFILTER1);
+ writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER0);
+ }
+
+ CS_LOCK(drvdata->base);
+
+ dev_info(drvdata->dev, "REPLICATOR enabled\n");
+ return 0;
+}
+
+static void replicator_disable(struct coresight_device *csdev, int inport,
+ int outport)
+{
+ struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+ CS_UNLOCK(drvdata->base);
+
+ /* disable the flow of ATB data through port */
+ if (outport == 0)
+ writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER0);
+ else
+ writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER1);
+
+ CS_LOCK(drvdata->base);
+
+ dev_info(drvdata->dev, "REPLICATOR disabled\n");
+}
+
+static const struct coresight_ops_link replicator_link_ops = {
+ .enable = replicator_enable,
+ .disable = replicator_disable,
+};
+
+static const struct coresight_ops replicator_cs_ops = {
+ .link_ops = &replicator_link_ops,
+};
+
+static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
+{
+ int ret;
+ struct device *dev = &adev->dev;
+ struct resource *res = &adev->res;
+ struct coresight_platform_data *pdata = NULL;
+ struct replicator_state *drvdata;
+ struct coresight_desc desc = { 0 };
+ struct device_node *np = adev->dev.of_node;
+ void __iomem *base;
+
+ if (np) {
+ pdata = of_get_coresight_platform_data(dev, np);
+ 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;
+ drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */
+ if (!IS_ERR(drvdata->atclk)) {
+ ret = clk_prepare_enable(drvdata->atclk);
+ if (ret)
+ return ret;
+ }
+
+ /* Validity for the resource is already checked by the AMBA core */
+ base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ drvdata->base = base;
+ dev_set_drvdata(dev, drvdata);
+ pm_runtime_put(&adev->dev);
+
+ desc.type = CORESIGHT_DEV_TYPE_LINK;
+ desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
+ desc.ops = &replicator_cs_ops;
+ desc.pdata = adev->dev.platform_data;
+ desc.dev = &adev->dev;
+ drvdata->csdev = coresight_register(&desc);
+ if (IS_ERR(drvdata->csdev))
+ return PTR_ERR(drvdata->csdev);
+
+ dev_info(dev, "initialized\n");
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int replicator_runtime_suspend(struct device *dev)
+{
+ struct replicator_state *drvdata = dev_get_drvdata(dev);
+
+ if (drvdata && !IS_ERR(drvdata->atclk))
+ clk_disable_unprepare(drvdata->atclk);
+
+ return 0;
+}
+
+static int replicator_runtime_resume(struct device *dev)
+{
+ struct replicator_state *drvdata = dev_get_drvdata(dev);
+
+ if (drvdata && !IS_ERR(drvdata->atclk))
+ clk_prepare_enable(drvdata->atclk);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops replicator_dev_pm_ops = {
+ SET_RUNTIME_PM_OPS(replicator_runtime_suspend,
+ replicator_runtime_resume,
+ NULL)
+};
+
+static struct amba_id replicator_ids[] = {
+ {
+ .id = 0x0003b909,
+ .mask = 0x0003ffff,
+ },
+ { 0, 0 },
+};
+
+static struct amba_driver replicator_driver = {
+ .drv = {
+ .name = "coresight-dynamic-replicator",
+ .pm = &replicator_dev_pm_ops,
+ .suppress_bind_attrs = true,
+ },
+ .probe = replicator_probe,
+ .id_table = replicator_ids,
+};
+builtin_amba_driver(replicator_driver);
diff --git a/drivers/hwtracing/coresight/coresight-replicator-qcom.c b/drivers/hwtracing/coresight/coresight-replicator-qcom.c
deleted file mode 100644
index 0a3d15f..0000000
--- a/drivers/hwtracing/coresight/coresight-replicator-qcom.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/amba/bus.h>
-#include <linux/clk.h>
-#include <linux/coresight.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/pm_runtime.h>
-#include <linux/slab.h>
-
-#include "coresight-priv.h"
-
-#define REPLICATOR_IDFILTER0 0x000
-#define REPLICATOR_IDFILTER1 0x004
-
-/**
- * struct replicator_state - specifics associated to a replicator component
- * @base: memory mapped base address for this component.
- * @dev: the device entity associated with this component
- * @atclk: optional clock for the core parts of the replicator.
- * @csdev: component vitals needed by the framework
- */
-struct replicator_state {
- void __iomem *base;
- struct device *dev;
- struct clk *atclk;
- struct coresight_device *csdev;
-};
-
-static int replicator_enable(struct coresight_device *csdev, int inport,
- int outport)
-{
- struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
-
- CS_UNLOCK(drvdata->base);
-
- /*
- * Ensure that the other port is disabled
- * 0x00 - passing through the replicator unimpeded
- * 0xff - disable (or impede) the flow of ATB data
- */
- if (outport == 0) {
- writel_relaxed(0x00, drvdata->base + REPLICATOR_IDFILTER0);
- writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER1);
- } else {
- writel_relaxed(0x00, drvdata->base + REPLICATOR_IDFILTER1);
- writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER0);
- }
-
- CS_LOCK(drvdata->base);
-
- dev_info(drvdata->dev, "REPLICATOR enabled\n");
- return 0;
-}
-
-static void replicator_disable(struct coresight_device *csdev, int inport,
- int outport)
-{
- struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
-
- CS_UNLOCK(drvdata->base);
-
- /* disable the flow of ATB data through port */
- if (outport == 0)
- writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER0);
- else
- writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER1);
-
- CS_LOCK(drvdata->base);
-
- dev_info(drvdata->dev, "REPLICATOR disabled\n");
-}
-
-static const struct coresight_ops_link replicator_link_ops = {
- .enable = replicator_enable,
- .disable = replicator_disable,
-};
-
-static const struct coresight_ops replicator_cs_ops = {
- .link_ops = &replicator_link_ops,
-};
-
-static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
-{
- int ret;
- struct device *dev = &adev->dev;
- struct resource *res = &adev->res;
- struct coresight_platform_data *pdata = NULL;
- struct replicator_state *drvdata;
- struct coresight_desc desc = { 0 };
- struct device_node *np = adev->dev.of_node;
- void __iomem *base;
-
- if (np) {
- pdata = of_get_coresight_platform_data(dev, np);
- 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;
- drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */
- if (!IS_ERR(drvdata->atclk)) {
- ret = clk_prepare_enable(drvdata->atclk);
- if (ret)
- return ret;
- }
-
- /* Validity for the resource is already checked by the AMBA core */
- base = devm_ioremap_resource(dev, res);
- if (IS_ERR(base))
- return PTR_ERR(base);
-
- drvdata->base = base;
- dev_set_drvdata(dev, drvdata);
- pm_runtime_put(&adev->dev);
-
- desc.type = CORESIGHT_DEV_TYPE_LINK;
- desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
- desc.ops = &replicator_cs_ops;
- desc.pdata = adev->dev.platform_data;
- desc.dev = &adev->dev;
- drvdata->csdev = coresight_register(&desc);
- if (IS_ERR(drvdata->csdev))
- return PTR_ERR(drvdata->csdev);
-
- dev_info(dev, "%s initialized\n", (char *)id->data);
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int replicator_runtime_suspend(struct device *dev)
-{
- struct replicator_state *drvdata = dev_get_drvdata(dev);
-
- if (drvdata && !IS_ERR(drvdata->atclk))
- clk_disable_unprepare(drvdata->atclk);
-
- return 0;
-}
-
-static int replicator_runtime_resume(struct device *dev)
-{
- struct replicator_state *drvdata = dev_get_drvdata(dev);
-
- if (drvdata && !IS_ERR(drvdata->atclk))
- clk_prepare_enable(drvdata->atclk);
-
- return 0;
-}
-#endif
-
-static const struct dev_pm_ops replicator_dev_pm_ops = {
- SET_RUNTIME_PM_OPS(replicator_runtime_suspend,
- replicator_runtime_resume,
- NULL)
-};
-
-static struct amba_id replicator_ids[] = {
- {
- .id = 0x0003b909,
- .mask = 0x0003ffff,
- .data = "REPLICATOR 1.0",
- },
- { 0, 0 },
-};
-
-static struct amba_driver replicator_driver = {
- .drv = {
- .name = "coresight-replicator-qcom",
- .pm = &replicator_dev_pm_ops,
- .suppress_bind_attrs = true,
- },
- .probe = replicator_probe,
- .id_table = replicator_ids,
-};
-builtin_amba_driver(replicator_driver);
--
2.7.5

Next message: Suzuki K Poulose: "[PATCH v3 04/18] arm64: qcom-msm8916: dts: Update coresight replicator"
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