drivers/ata/pata_cmd640.c

File Facts

System

Linux kernel

Corpus path

drivers/ata/pata_cmd640.c

Extension

.c

Size

6688 bytes

Lines

273

Domain

Driver Families

Bucket

drivers/ata

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.
• 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/kernel.h
• linux/module.h
• linux/pci.h
• linux/blkdev.h
• linux/delay.h
• linux/gfp.h
• scsi/scsi_host.h
• linux/libata.h

Detected Declarations

• struct cmd640_reg
• function cmd640_set_piomode
• function cmd640_qc_issue
• function cmd640_port_start
• function cmd640_sff_irq_check
• function cmd640_hardware_init
• function cmd640_init_one
• function cmd640_reinit_one

Annotated Snippet

static struct pci_driver cmd640_pci_driver = {
	.name 		= DRV_NAME,
	.id_table	= cmd640,
	.probe 		= cmd640_init_one,
	.remove		= ata_pci_remove_one,
#ifdef CONFIG_PM_SLEEP
	.suspend	= ata_pci_device_suspend,
	.resume		= cmd640_reinit_one,
#endif
};

module_pci_driver(cmd640_pci_driver);

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for CMD640 PATA controllers");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, cmd640);
MODULE_VERSION(DRV_VERSION);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/pci.h`, `linux/blkdev.h`, `linux/delay.h`, `linux/gfp.h`, `scsi/scsi_host.h`, `linux/libata.h`.
• Detected declarations: `struct cmd640_reg`, `function cmd640_set_piomode`, `function cmd640_qc_issue`, `function cmd640_port_start`, `function cmd640_sff_irq_check`, `function cmd640_hardware_init`, `function cmd640_init_one`, `function cmd640_reinit_one`.
• Atlas domain: Driver Families / drivers/ata.
• Implementation status: pattern 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.