drivers/gpu/drm/xen/xen_drm_front_gem.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/xen/xen_drm_front_gem.h

Extension

.h

Size

1083 bytes

Lines

41

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

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

Detected Declarations

• struct dma_buf_attachment
• struct iosys_map
• struct drm_device
• struct drm_gem_object
• struct sg_table

Annotated Snippet

#ifndef __XEN_DRM_FRONT_GEM_H
#define __XEN_DRM_FRONT_GEM_H

struct dma_buf_attachment;
struct iosys_map;
struct drm_device;
struct drm_gem_object;
struct sg_table;

struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev,
						size_t size);

struct drm_gem_object *
xen_drm_front_gem_import_sg_table(struct drm_device *dev,
				  struct dma_buf_attachment *attach,
				  struct sg_table *sgt);

struct sg_table *xen_drm_front_gem_get_sg_table(struct drm_gem_object *gem_obj);

struct page **xen_drm_front_gem_get_pages(struct drm_gem_object *obj);

void xen_drm_front_gem_free_object_unlocked(struct drm_gem_object *gem_obj);

int xen_drm_front_gem_prime_vmap(struct drm_gem_object *gem_obj,
				 struct iosys_map *map);

void xen_drm_front_gem_prime_vunmap(struct drm_gem_object *gem_obj,
				    struct iosys_map *map);

#endif /* __XEN_DRM_FRONT_GEM_H */

Annotation

• Detected declarations: `struct dma_buf_attachment`, `struct iosys_map`, `struct drm_device`, `struct drm_gem_object`, `struct sg_table`.
• 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.