drivers/parisc/superio.c

File Facts

System

Linux kernel

Corpus path

drivers/parisc/superio.c

Extension

.c

Size

13928 bytes

Lines

495

Domain

Driver Families

Bucket

drivers/parisc

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/errno.h
• linux/init.h
• linux/module.h
• linux/types.h
• linux/interrupt.h
• linux/ioport.h
• linux/serial.h
• linux/pci.h
• linux/parport.h
• linux/parport_pc.h
• linux/termios.h
• linux/tty.h
• linux/serial_core.h
• linux/serial_8250.h
• linux/delay.h
• asm/io.h
• asm/hardware.h
• asm/superio.h

Detected Declarations

• function superio_interrupt
• function superio_init
• function superio_mask_irq
• function superio_unmask_irq
• function superio_fixup_irq
• function superio_serial_init
• function superio_parport_init
• function superio_fixup_pci
• function superio_probe

Annotated Snippet

static struct pci_driver superio_driver __refdata = {
	.name =         SUPERIO,
	.id_table =     superio_tbl,
	.probe =        superio_probe,
};

module_pci_driver(superio_driver);

Annotation

• Immediate include surface: `linux/errno.h`, `linux/init.h`, `linux/module.h`, `linux/types.h`, `linux/interrupt.h`, `linux/ioport.h`, `linux/serial.h`, `linux/pci.h`.
• Detected declarations: `function superio_interrupt`, `function superio_init`, `function superio_mask_irq`, `function superio_unmask_irq`, `function superio_fixup_irq`, `function superio_serial_init`, `function superio_parport_init`, `function superio_fixup_pci`, `function superio_probe`.
• Atlas domain: Driver Families / drivers/parisc.
• Implementation status: pattern implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.