drivers/nubus/nubus.c

File Facts

System

Linux kernel

Corpus path

drivers/nubus/nubus.c

Extension

.c

Size

23227 bytes

Lines

896

Domain

Driver Families

Bucket

drivers/nubus

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/types.h
• linux/kernel.h
• linux/string.h
• linux/nubus.h
• linux/errno.h
• linux/init.h
• linux/module.h
• linux/seq_file.h
• linux/slab.h
• asm/setup.h
• asm/page.h
• asm/hwtest.h

Detected Declarations

• function block
• function nubus_get_rom
• function nubus_rewind
• function nubus_advance
• function nubus_move
• function nubus_expand32
• function nubus_get_rsrc_mem
• function nubus_get_rsrc_str
• function nubus_seq_write_rsrc_mem
• function nubus_get_root_dir
• function nubus_get_func_dir
• function nubus_get_board_dir
• function nubus_get_subdir
• function nubus_readdir
• function nubus_rewinddir
• function nubus_find_rsrc
• function nubus_get_block_rsrc_dir
• function nubus_get_display_vidmode
• function nubus_get_display_resource
• function nubus_get_network_resource
• function nubus_get_cpu_resource
• function nubus_get_private_resource
• function nubus_get_functional_resource
• function nubus_get_icon
• function nubus_get_vendorinfo
• function nubus_get_board_resource
• function nubus_add_board
• function nubus_probe_slot
• function nubus_scan_bus
• function nubus_init
• module init nubus_init
• export nubus_get_rsrc_mem
• export nubus_get_rsrc_str
• export nubus_get_root_dir
• export nubus_get_func_dir
• export nubus_get_board_dir
• export nubus_get_subdir
• export nubus_readdir
• export nubus_rewinddir
• export nubus_first_rsrc_or_null
• export nubus_next_rsrc_or_null
• export nubus_find_rsrc

Annotated Snippet

subsys_initcall(nubus_init);

Annotation

• Immediate include surface: `linux/types.h`, `linux/kernel.h`, `linux/string.h`, `linux/nubus.h`, `linux/errno.h`, `linux/init.h`, `linux/module.h`, `linux/seq_file.h`.
• Detected declarations: `function block`, `function nubus_get_rom`, `function nubus_rewind`, `function nubus_advance`, `function nubus_move`, `function nubus_expand32`, `function nubus_get_rsrc_mem`, `function nubus_get_rsrc_str`, `function nubus_seq_write_rsrc_mem`, `function nubus_get_root_dir`.
• Atlas domain: Driver Families / drivers/nubus.
• 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.