drivers/gpu/drm/xe/regs/xe_gtt_defs.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/xe/regs/xe_gtt_defs.h

Extension

.h

Size

973 bytes

Lines

39

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _XE_GTT_DEFS_H_
#define _XE_GTT_DEFS_H_

#define XELPG_GGTT_PTE_PAT0	BIT_ULL(52)
#define XELPG_GGTT_PTE_PAT1	BIT_ULL(53)

#define XE_PTE_ADDR_MASK	GENMASK_ULL(51, 12)
#define GGTT_PTE_VFID		GENMASK_ULL(11, 2)

#define GUC_GGTT_TOP		0xFEE00000

#define XELPG_PPGTT_PTE_PAT3		BIT_ULL(62)
#define XE2_PPGTT_PTE_PAT4		BIT_ULL(61)
#define XE_PPGTT_PDE_PDPE_PAT2		BIT_ULL(12)
#define XE_PPGTT_PTE_PAT2		BIT_ULL(7)
#define XE_PPGTT_PTE_PAT1		BIT_ULL(4)
#define XE_PPGTT_PTE_PAT0		BIT_ULL(3)

#define XE_PDE_PS_2M			BIT_ULL(7)
#define XE_PDPE_PS_1G			BIT_ULL(7)
#define XE_PDE_IPS_64K			BIT_ULL(11)

#define XE_GGTT_PTE_DM			BIT_ULL(1)
#define XE_USM_PPGTT_PTE_AE		BIT_ULL(10)
#define XE_PPGTT_PTE_DM			BIT_ULL(11)
#define XE_PDE_64K			BIT_ULL(6)
#define XE_PTE_PS64			BIT_ULL(8)
#define XE_PTE_NULL			BIT_ULL(9)

#define XE_PAGE_PRESENT			BIT_ULL(0)
#define XE_PAGE_RW			BIT_ULL(1)

#endif

Annotation

• 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.