drivers/hwtracing/coresight/coresight-self-hosted-trace.h

File Facts

System

Linux kernel

Corpus path

drivers/hwtracing/coresight/coresight-self-hosted-trace.h

Extension

.h

Size

443 bytes

Lines

25

Domain

Driver Families

Bucket

drivers/hwtracing

Inferred role

Driver Families: implementation source

Status

source 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.

Dependency Surface

• asm/sysreg.h

Detected Declarations

• function Copyright
• function write_trfcr

Annotated Snippet

#ifndef __CORESIGHT_SELF_HOSTED_TRACE_H
#define __CORESIGHT_SELF_HOSTED_TRACE_H

#include <asm/sysreg.h>

static inline u64 read_trfcr(void)
{
	return read_sysreg_s(SYS_TRFCR_EL1);
}

static inline void write_trfcr(u64 val)
{
	write_sysreg_s(val, SYS_TRFCR_EL1);
	isb();
}

#endif /*  __CORESIGHT_SELF_HOSTED_TRACE_H */

Annotation

• Immediate include surface: `asm/sysreg.h`.
• Detected declarations: `function Copyright`, `function write_trfcr`.
• Atlas domain: Driver Families / drivers/hwtracing.
• Implementation status: source implementation candidate.

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.