drivers/gpu/drm/i915/display/intel_global_state.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/display/intel_global_state.h

Extension

.h

Size

2180 bytes

Lines

66

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.
• 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

• linux/kref.h
• linux/list.h

Detected Declarations

• struct intel_atomic_state
• struct intel_display
• struct intel_global_commit
• struct intel_global_obj
• struct intel_global_state
• struct intel_global_state_funcs
• struct intel_global_obj
• struct intel_global_state

Annotated Snippet

struct intel_global_state_funcs {
	struct intel_global_state *(*atomic_duplicate_state)(struct intel_global_obj *obj);
	void (*atomic_destroy_state)(struct intel_global_obj *obj,
				     struct intel_global_state *state);
};

struct intel_global_obj {
	struct list_head head;
	struct intel_global_state *state;
	const struct intel_global_state_funcs *funcs;
};

struct intel_global_state {
	struct intel_global_obj *obj;
	struct intel_atomic_state *state;
	struct intel_global_commit *commit;
	struct kref ref;
	bool changed, serialized;
};

void intel_atomic_global_obj_init(struct intel_display *display,
				  struct intel_global_obj *obj,
				  struct intel_global_state *state,
				  const struct intel_global_state_funcs *funcs);
void intel_atomic_global_obj_cleanup(struct intel_display *display);

struct intel_global_state *
intel_atomic_get_global_obj_state(struct intel_atomic_state *state,
				  struct intel_global_obj *obj);
struct intel_global_state *
intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state,
				      struct intel_global_obj *obj);
struct intel_global_state *
intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state,
				      struct intel_global_obj *obj);

void intel_atomic_swap_global_state(struct intel_atomic_state *state);
void intel_atomic_clear_global_state(struct intel_atomic_state *state);
int intel_atomic_lock_global_state(struct intel_global_state *obj_state);
int intel_atomic_serialize_global_state(struct intel_global_state *obj_state);

int intel_atomic_global_state_setup_commit(struct intel_atomic_state *state);
void intel_atomic_global_state_commit_done(struct intel_atomic_state *state);
int intel_atomic_global_state_wait_for_dependencies(struct intel_atomic_state *state);

bool intel_atomic_global_state_is_serialized(struct intel_atomic_state *state);

#endif

Annotation

• Immediate include surface: `linux/kref.h`, `linux/list.h`.
• Detected declarations: `struct intel_atomic_state`, `struct intel_display`, `struct intel_global_commit`, `struct intel_global_obj`, `struct intel_global_state`, `struct intel_global_state_funcs`, `struct intel_global_obj`, `struct intel_global_state`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source 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.