drivers/gpu/drm/i915/gem/i915_gem_lmem.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/gem/i915_gem_lmem.h

Extension

.h

Size

953 bytes

Lines

37

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_i915_private
• struct drm_i915_gem_object
• struct intel_memory_region

Annotated Snippet

#ifndef __I915_GEM_LMEM_H
#define __I915_GEM_LMEM_H

#include <linux/types.h>

struct drm_i915_private;
struct drm_i915_gem_object;
struct intel_memory_region;

void __iomem *
i915_gem_object_lmem_io_map(struct drm_i915_gem_object *obj,
			    unsigned long n,
			    unsigned long size);

bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj);

struct drm_i915_gem_object *
i915_gem_object_create_lmem_from_data(struct drm_i915_private *i915,
				      const void *data, size_t size);

struct drm_i915_gem_object *
__i915_gem_object_create_lmem_with_ps(struct drm_i915_private *i915,
				      resource_size_t size,
				      resource_size_t page_size,
				      unsigned int flags);
struct drm_i915_gem_object *
i915_gem_object_create_lmem(struct drm_i915_private *i915,
			    resource_size_t size,
			    unsigned int flags);

#endif /* !__I915_GEM_LMEM_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct drm_i915_private`, `struct drm_i915_gem_object`, `struct intel_memory_region`.
• 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.