drivers/gpu/drm/i915/intel_pcode.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/intel_pcode.h

Extension

.h

Size

1005 bytes

Lines

33

Domain

Driver Families

Bucket

drivers/gpu

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct drm_device
• struct intel_uncore

Annotated Snippet

#ifndef _INTEL_PCODE_H_
#define _INTEL_PCODE_H_

#include <linux/types.h>

struct drm_device;
struct intel_uncore;

int snb_pcode_read(struct intel_uncore *uncore, u32 mbox, u32 *val, u32 *val1);
int snb_pcode_write_timeout(struct intel_uncore *uncore, u32 mbox, u32 val, int timeout_ms);
#define snb_pcode_write(uncore, mbox, val) \
	snb_pcode_write_timeout((uncore), (mbox), (val), 1)

int skl_pcode_request(struct intel_uncore *uncore, u32 mbox, u32 request,
		      u32 reply_mask, u32 reply, int timeout_base_ms);

int intel_pcode_init(struct intel_uncore *uncore);

/*
 * Helpers for dGfx PCODE mailbox command formatting
 */
int snb_pcode_read_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 *val);
int snb_pcode_write_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 val);

extern const struct intel_display_pcode_interface i915_display_pcode_interface;

#endif /* _INTEL_PCODE_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct drm_device`, `struct intel_uncore`.
• Atlas domain: Driver Families / drivers/gpu.
• 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.