drivers/hwtracing/coresight/coresight-cti-core.c

File Facts

System

Linux kernel

Corpus path

drivers/hwtracing/coresight/coresight-cti-core.c

Extension

.c

Size

20686 bytes

Lines

801

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/atomic.h
• linux/bits.h
• linux/coresight.h
• linux/cpu_pm.h
• linux/cpuhotplug.h
• linux/device.h
• linux/io.h
• linux/kernel.h
• linux/list.h
• linux/mutex.h
• linux/pm_runtime.h
• linux/property.h
• linux/spinlock.h
• coresight-priv.h
• coresight-cti.h

Detected Declarations

• function cti_write_all_hw_regs
• function cti_enable_hw
• function cti_disable_hw
• function cti_read_single_reg
• function cti_write_single_reg
• function cti_write_intack
• function cti_set_default_config
• function cti_add_connection_entry
• function cti_add_default_connection
• function cti_channel_trig_op
• function cti_channel_gate_op
• function cti_channel_setop
• function cti_add_sysfs_link
• function cti_remove_sysfs_link
• function cti_match_fixup_csdev
• function list_for_each_entry
• function cti_add_assoc_to_csdev
• function cti_remove_assoc_from_csdev
• function cti_update_conn_xrefs
• function list_for_each_entry
• function cti_remove_conn_xrefs
• function list_for_each_entry
• function cti_enable
• function cti_disable
• function cti_remove
• function cti_probe
• function cti_init
• function cti_exit
• module init cti_init

Annotated Snippet

module_init(cti_init);
module_exit(cti_exit);

MODULE_AUTHOR("Mike Leach <mike.leach@linaro.org>");
MODULE_DESCRIPTION("Arm CoreSight CTI Driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/amba/bus.h`, `linux/atomic.h`, `linux/bits.h`, `linux/coresight.h`, `linux/cpu_pm.h`, `linux/cpuhotplug.h`, `linux/device.h`, `linux/io.h`.
• Detected declarations: `function cti_write_all_hw_regs`, `function cti_enable_hw`, `function cti_disable_hw`, `function cti_read_single_reg`, `function cti_write_single_reg`, `function cti_write_intack`, `function cti_set_default_config`, `function cti_add_connection_entry`, `function cti_add_default_connection`, `function cti_channel_trig_op`.
• 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.