drivers/scsi/a2091.c

File Facts

System

Linux kernel

Corpus path

drivers/scsi/a2091.c

Extension

.c

Size

7550 bytes

Lines

305

Domain

Driver Families

Bucket

drivers/scsi

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/init.h
• linux/interrupt.h
• linux/mm.h
• linux/slab.h
• linux/spinlock.h
• linux/zorro.h
• linux/module.h
• asm/page.h
• asm/amigaints.h
• asm/amigahw.h
• scsi/scsi.h
• scsi/scsi_cmnd.h
• scsi/scsi_device.h
• scsi/scsi_eh.h
• scsi/scsi_tcq.h
• wd33c93.h
• a2091.h

Detected Declarations

• struct a2091_hostdata
• function a2091_intr
• function dma_setup
• function dma_stop
• function a2091_probe
• function a2091_remove
• function a2091_init
• function a2091_exit
• module init a2091_init

Annotated Snippet

module_init(a2091_init);

static void __exit a2091_exit(void)
{
	zorro_unregister_driver(&a2091_driver);
}
module_exit(a2091_exit);

MODULE_DESCRIPTION("Commodore A2091/A590 SCSI");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/types.h`, `linux/init.h`, `linux/interrupt.h`, `linux/mm.h`, `linux/slab.h`, `linux/spinlock.h`, `linux/zorro.h`, `linux/module.h`.
• Detected declarations: `struct a2091_hostdata`, `function a2091_intr`, `function dma_setup`, `function dma_stop`, `function a2091_probe`, `function a2091_remove`, `function a2091_init`, `function a2091_exit`, `module init a2091_init`.
• Atlas domain: Driver Families / drivers/scsi.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• 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.