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2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/hwtracing/coresight/Kconfig
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+# SPDX-License-Identifier: GPL-2.0-only
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 #
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 # Coresight configuration
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 #
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 menuconfig CORESIGHT
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-	bool "CoreSight Tracing Support"
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+	tristate "CoreSight Tracing Support"
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+	depends on ARM || ARM64
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+	depends on OF || ACPI
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 	select ARM_AMBA
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 	select PERF_EVENTS
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 	help
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 	  specification and configure the right series of components when a
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 	  trace source gets enabled.
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight.
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+
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 if CORESIGHT
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 config CORESIGHT_LINKS_AND_SINKS
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-	bool "CoreSight Link and Sink drivers"
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+	tristate "CoreSight Link and Sink drivers"
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 	help
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 	  This enables support for CoreSight link and sink drivers that are
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 	  responsible for transporting and collecting the trace data
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 	  respectively.  Link and sinks are dynamically aggregated with a trace
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 	  entity at run time to form a complete trace path.
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+	  To compile these drivers as modules, choose M here: the
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+	  modules will be called coresight-funnel and coresight-replicator.
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+
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 config CORESIGHT_LINK_AND_SINK_TMC
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-	bool "Coresight generic TMC driver"
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+	tristate "Coresight generic TMC driver"
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+
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 	depends on CORESIGHT_LINKS_AND_SINKS
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 	help
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 	  This enables support for the Trace Memory Controller driver.
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 	  complies with the generic implementation of the component without
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 	  special enhancement or added features.
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-tmc.
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+
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 config CORESIGHT_CATU
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-	bool "Coresight Address Translation Unit (CATU) driver"
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+	tristate "Coresight Address Translation Unit (CATU) driver"
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 	depends on CORESIGHT_LINK_AND_SINK_TMC
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 	help
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 	   Enable support for the Coresight Address Translation Unit (CATU).
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 	   by looking up the provided table. CATU can also be used in pass-through
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 	   mode where the address is not translated.
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+	   To compile this driver as a module, choose M here: the
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+	   module will be called coresight-catu.
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+
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 config CORESIGHT_SINK_TPIU
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-	bool "Coresight generic TPIU driver"
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+	tristate "Coresight generic TPIU driver"
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 	depends on CORESIGHT_LINKS_AND_SINKS
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 	help
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 	  This enables support for the Trace Port Interface Unit driver,
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 	  connected to an external host for use case capturing more traces than
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 	  the on-board coresight memory can handle.
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-tpiu.
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+
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 config CORESIGHT_SINK_ETBV10
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-	bool "Coresight ETBv1.0 driver"
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+	tristate "Coresight ETBv1.0 driver"
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 	depends on CORESIGHT_LINKS_AND_SINKS
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 	help
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 	  This enables support for the Embedded Trace Buffer version 1.0 driver
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 	  that complies with the generic implementation of the component without
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 	  special enhancement or added features.
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-etb10.
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+
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 config CORESIGHT_SOURCE_ETM3X
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-	bool "CoreSight Embedded Trace Macrocell 3.x driver"
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+	tristate "CoreSight Embedded Trace Macrocell 3.x driver"
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 	depends on !ARM64
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 	select CORESIGHT_LINKS_AND_SINKS
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 	help
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 	  This is primarily useful for instruction level tracing.  Depending
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 	  the ETM version data tracing may also be available.
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-etm3x.
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+
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 config CORESIGHT_SOURCE_ETM4X
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-	bool "CoreSight Embedded Trace Macrocell 4.x driver"
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+	tristate "CoreSight ETMv4.x / ETE driver"
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 	depends on ARM64
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 	select CORESIGHT_LINKS_AND_SINKS
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 	select PID_IN_CONTEXTIDR
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 	help
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-	  This driver provides support for the ETM4.x tracer module, tracing the
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-	  instructions that a processor is executing. This is primarily useful
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-	  for instruction level tracing. Depending on the implemented version
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-	  data tracing may also be available.
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+	  This driver provides support for the CoreSight Embedded Trace Macrocell
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+	  version 4.x and the Embedded Trace Extensions (ETE). Both are CPU tracer
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+	  modules, tracing the instructions that a processor is executing. This is
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+	  primarily useful for instruction level tracing.
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-config CORESIGHT_DYNAMIC_REPLICATOR
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-	bool "CoreSight Programmable Replicator driver"
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-	depends on CORESIGHT_LINKS_AND_SINKS
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-etm4x.
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+
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+config ETM4X_IMPDEF_FEATURE
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+	bool "Control implementation defined overflow support in ETM 4.x driver"
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+	depends on CORESIGHT_SOURCE_ETM4X
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 	help
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-	  This enables support for dynamic CoreSight replicator link driver.
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-	  The programmable ATB replicator allows independent filtering of the
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-	  trace data based on the traceid.
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+	  This control provides implementation define control for CoreSight
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+	  ETM 4.x tracer module that can't reduce commit rate automatically.
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+	  This avoids overflow between the ETM tracer module and the cpu core.
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 config CORESIGHT_STM
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-	bool "CoreSight System Trace Macrocell driver"
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+	tristate "CoreSight System Trace Macrocell driver"
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 	depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64
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 	select CORESIGHT_LINKS_AND_SINKS
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 	select STM
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 	  instrumentation based tracing. This is primarily used for
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 	  logging useful software events or data coming from various entities
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 	  in the system, possibly running different OSs
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+
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-stm.
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 config CORESIGHT_CPU_DEBUG
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 	tristate "CoreSight CPU Debug driver"
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 	  can quickly get to know program counter (PC), secure state,
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 	  exception level, etc. Before use debugging functionality, platform
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 	  needs to ensure the clock domain and power domain are enabled
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-	  properly, please refer Documentation/trace/coresight-cpu-debug.txt
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+	  properly, please refer Documentation/trace/coresight/coresight-cpu-debug.rst
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 	  for detailed description and the example for usage.
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-cpu-debug.
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+
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+config CORESIGHT_CTI
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+	tristate "CoreSight Cross Trigger Interface (CTI) driver"
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+	depends on ARM || ARM64
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+	help
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+	  This driver provides support for CoreSight CTI and CTM components.
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+	  These provide hardware triggering events between CoreSight trace
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+	  source and sink components. These can be used to halt trace or
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+	  inject events into the trace stream. CTI also provides a software
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+	  control to trigger the same halt events. This can provide fast trace
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+	  halt compared to disabling sources and sinks normally in driver
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+	  software.
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+
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+	  To compile this driver as a module, choose M here: the
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+	  module will be called coresight-cti.
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+
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+config CORESIGHT_CTI_INTEGRATION_REGS
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+	bool "Access CTI CoreSight Integration Registers"
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+	depends on CORESIGHT_CTI
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+	help
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+	  This option adds support for the CoreSight integration registers on
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+	  this device. The integration registers allow the exploration of the
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+	  CTI trigger connections between this and other devices.These
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+	  registers are not used in normal operation and can leave devices in
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+	  an inconsistent state.
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+
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+config CORESIGHT_TRBE
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+	tristate "Trace Buffer Extension (TRBE) driver"
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+	depends on ARM64 && CORESIGHT_SOURCE_ETM4X
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+	help
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+	  This driver provides support for percpu Trace Buffer Extension (TRBE).
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+	  TRBE always needs to be used along with it's corresponding percpu ETE
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+	  component. ETE generates trace data which is then captured with TRBE.
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+	  Unlike traditional sink devices, TRBE is a CPU feature accessible via
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+	  system registers. But it's explicit dependency with trace unit (ETE)
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+	  requires it to be plugged in as a coresight sink device.
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+
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+	  To compile this driver as a module, choose M here: the module will be
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+	  called coresight-trbe.
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 endif