drivers/gpu/drm/i915/gem/i915_gem_object.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/gem/i915_gem_object.h

Extension

.h

Size

27764 bytes

Lines

875

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• drm/drm_gem.h
• drm/drm_file.h
• drm/drm_device.h
• intel_memory_region.h
• i915_gem_object_types.h
• i915_gem_gtt.h
• i915_gem_ww.h
• i915_vma_types.h

Detected Declarations

• struct drm_scanout_buffer
• struct intel_panic
• enum intel_region_id
• function i915_gem_object_size_2big
• function i915_gem_object_lookup_rcu
• function i915_gem_object_get_rcu
• function i915_gem_object_lookup
• function i915_gem_object_get
• function i915_gem_object_put
• function assert_object_held_shared
• function __i915_gem_object_lock
• function i915_gem_object_lock
• function i915_gem_object_lock_interruptible
• function i915_gem_object_trylock
• function i915_gem_object_unlock
• function i915_gem_object_set_readonly
• function i915_gem_object_is_readonly
• function i915_gem_object_is_contiguous
• function i915_gem_object_is_volatile
• function i915_gem_object_set_volatile
• function i915_gem_object_has_tiling_quirk
• function i915_gem_object_set_tiling_quirk
• function i915_gem_object_clear_tiling_quirk
• function i915_gem_object_is_protected
• function i915_gem_object_type_has
• function i915_gem_object_is_shrinkable
• function i915_gem_object_has_self_managed_shrink_list
• function i915_gem_object_is_proxy
• function i915_gem_object_never_mmap
• function i915_gem_object_is_framebuffer
• function i915_gem_object_get_tiling
• function i915_gem_object_is_tiled
• function i915_gem_object_get_stride
• function i915_gem_tile_height
• function i915_gem_object_get_tile_height
• function i915_gem_object_get_tile_row_size
• function __i915_gem_object_page_iter_get_sg
• function __i915_gem_object_page_iter_get_sg
• function i915_gem_object_pin_pages
• function i915_gem_object_has_pages
• function __i915_gem_object_pin_pages
• function i915_gem_object_has_pinned_pages
• function __i915_gem_object_unpin_pages
• function i915_gem_object_unpin_pages
• function i915_gem_object_flush_map
• function i915_gem_object_unpin_map
• function i915_gem_object_finish_access
• function __start_cpu_write

Annotated Snippet

static inline bool i915_gem_object_is_userptr(struct drm_i915_gem_object *obj) { return false; }

static inline int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
static inline int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
static inline int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }

#endif

#endif

Annotation

• Immediate include surface: `drm/drm_gem.h`, `drm/drm_file.h`, `drm/drm_device.h`, `intel_memory_region.h`, `i915_gem_object_types.h`, `i915_gem_gtt.h`, `i915_gem_ww.h`, `i915_vma_types.h`.
• Detected declarations: `struct drm_scanout_buffer`, `struct intel_panic`, `enum intel_region_id`, `function i915_gem_object_size_2big`, `function i915_gem_object_lookup_rcu`, `function i915_gem_object_get_rcu`, `function i915_gem_object_lookup`, `function i915_gem_object_get`, `function i915_gem_object_put`, `function assert_object_held_shared`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.