drivers/gpu/drm/xe/xe_pcode.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/xe/xe_pcode.h

Extension

.h

Size

1089 bytes

Lines

38

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 xe_device
• struct xe_tile

Annotated Snippet

#ifndef _XE_PCODE_H_
#define _XE_PCODE_H_

#include <linux/types.h>

struct drm_device;
struct xe_device;
struct xe_tile;

void xe_pcode_init(struct xe_tile *tile);
int xe_pcode_probe_early(struct xe_device *xe);
int xe_pcode_ready(struct xe_device *xe, bool locked);
int xe_pcode_init_min_freq_table(struct xe_tile *tile, u32 min_gt_freq,
				 u32 max_gt_freq);
int xe_pcode_read(struct xe_tile *tile, u32 mbox, u32 *val, u32 *val1);
int xe_pcode_write_timeout(struct xe_tile *tile, u32 mbox, u32 val,
			   int timeout_ms);
int xe_pcode_write64_timeout(struct xe_tile *tile, u32 mbox, u32 data0,
			     u32 data1, int timeout);

#define xe_pcode_write(tile, mbox, val) \
	xe_pcode_write_timeout(tile, mbox, val, 1)

int xe_pcode_request(struct xe_tile *tile, u32 mbox, u32 request,
		     u32 reply_mask, u32 reply, int timeout_ms);

#define PCODE_MBOX(mbcmd, param1, param2)\
	(FIELD_PREP(PCODE_MB_COMMAND, mbcmd)\
	| FIELD_PREP(PCODE_MB_PARAM1, param1)\
	| FIELD_PREP(PCODE_MB_PARAM2, param2))

#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct drm_device`, `struct xe_device`, `struct xe_tile`.
• 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.