drivers/hwtracing/coresight/coresight-tnoc.c

File Facts

System

Linux kernel

Corpus path

drivers/hwtracing/coresight/coresight-tnoc.c

Extension

.c

Size

8641 bytes

Lines

359

Domain

Driver Families

Bucket

drivers/hwtracing

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/amba/bus.h
• linux/coresight.h
• linux/device.h
• linux/io.h
• linux/kernel.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• coresight-priv.h
• coresight-trace-id.h

Detected Declarations

• struct trace_noc_drvdata
• function trace_noc_enable_hw
• function trace_noc_enable
• function scoped_guard
• function trace_noc_disable
• function scoped_guard
• function trace_noc_id
• function trace_noc_init_default_data
• function traceid_show
• function trace_id_is_visible
• function _tnoc_probe
• function trace_noc_probe
• function trace_noc_remove
• function itnoc_probe
• function itnoc_remove
• function itnoc_runtime_suspend
• function itnoc_runtime_resume
• function tnoc_init
• function tnoc_exit
• module init tnoc_init

Annotated Snippet

module_init(tnoc_init);
module_exit(tnoc_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Trace NOC driver");

Annotation

• Immediate include surface: `linux/amba/bus.h`, `linux/coresight.h`, `linux/device.h`, `linux/io.h`, `linux/kernel.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`.
• Detected declarations: `struct trace_noc_drvdata`, `function trace_noc_enable_hw`, `function trace_noc_enable`, `function scoped_guard`, `function trace_noc_disable`, `function scoped_guard`, `function trace_noc_id`, `function trace_noc_init_default_data`, `function traceid_show`, `function trace_id_is_visible`.
• Atlas domain: Driver Families / drivers/hwtracing.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.