drivers/char/agp/alpha-agp.c

File Facts

System

Linux kernel

Corpus path

drivers/char/agp/alpha-agp.c

Extension

.c

Size

5491 bytes

Lines

222

Domain

Driver Families

Bucket

drivers/char

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/pci.h
• linux/init.h
• linux/agp_backend.h
• linux/mm.h
• linux/slab.h
• asm/machvec.h
• asm/agp_backend.h
• ../../../arch/alpha/kernel/pci_impl.h
• agp.h

Detected Declarations

• function alpha_core_agp_vm_fault
• function alpha_core_agp_fetch_size
• function alpha_core_agp_configure
• function alpha_core_agp_cleanup
• function alpha_core_agp_tlbflush
• function alpha_core_agp_enable
• function alpha_core_agp_insert_memory
• function alpha_core_agp_remove_memory
• function alpha_core_agp_create_free_gatt_table
• function alpha_core_agp_setup
• function agp_alpha_core_init
• function agp_alpha_core_cleanup
• module init agp_alpha_core_init

Annotated Snippet

module_init(agp_alpha_core_init);
module_exit(agp_alpha_core_cleanup);

MODULE_AUTHOR("Jeff Wiedemeier <Jeff.Wiedemeier@hp.com>");
MODULE_DESCRIPTION("Alpha AGP support");
MODULE_LICENSE("GPL and additional rights");

Annotation

• Immediate include surface: `linux/module.h`, `linux/pci.h`, `linux/init.h`, `linux/agp_backend.h`, `linux/mm.h`, `linux/slab.h`, `asm/machvec.h`, `asm/agp_backend.h`.
• Detected declarations: `function alpha_core_agp_vm_fault`, `function alpha_core_agp_fetch_size`, `function alpha_core_agp_configure`, `function alpha_core_agp_cleanup`, `function alpha_core_agp_tlbflush`, `function alpha_core_agp_enable`, `function alpha_core_agp_insert_memory`, `function alpha_core_agp_remove_memory`, `function alpha_core_agp_create_free_gatt_table`, `function alpha_core_agp_setup`.
• Atlas domain: Driver Families / drivers/char.
• Implementation status: integration 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.