drivers/gpu/drm/i915/gem/i915_gem_ttm_pm.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/gem/i915_gem_ttm_pm.h

Extension

.h

Size

622 bytes

Lines

27

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 intel_memory_region
• struct drm_i915_gem_object

Annotated Snippet

#ifndef _I915_GEM_TTM_PM_H_
#define _I915_GEM_TTM_PM_H_

#include <linux/types.h>

struct intel_memory_region;
struct drm_i915_gem_object;

#define I915_TTM_BACKUP_ALLOW_GPU BIT(0)
#define I915_TTM_BACKUP_PINNED    BIT(1)

int i915_ttm_backup_region(struct intel_memory_region *mr, u32 flags);

void i915_ttm_recover_region(struct intel_memory_region *mr);

int i915_ttm_restore_region(struct intel_memory_region *mr, u32 flags);

/* Internal I915 TTM functions below. */
void i915_ttm_backup_free(struct drm_i915_gem_object *obj);

#endif

Annotation

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