drivers/gpu/drm/amd/display/dc/inc/vm_helper.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/display/dc/inc/vm_helper.h

Extension

.h

Size

1601 bytes

Lines

49

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

• dc_types.h

Detected Declarations

• struct vmid_usage
• struct vm_helper

Annotated Snippet

struct vmid_usage {
	int vmid_usage[2];
};

struct vm_helper {
	unsigned int num_vmid;
	struct vmid_usage hubp_vmid_usage[MAX_HUBP];
};

void vm_helper_mark_vmid_used(struct vm_helper *vm_helper, unsigned int pos, uint8_t hubp_idx);

void vm_helper_init(
	struct vm_helper *vm_helper,
	unsigned int num_vmid);

#endif /* DC_INC_VM_HELPER_H_ */

Annotation

• Immediate include surface: `dc_types.h`.
• Detected declarations: `struct vmid_usage`, `struct vm_helper`.
• 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.