drivers/media/pci/b2c2/flexcop-pci.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/b2c2/flexcop-pci.c

Extension

.c

Size

12136 bytes

Lines

441

Domain

Driver Families

Bucket

drivers/media

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.
• 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

• flexcop-common.h

Detected Declarations

• struct flexcop_pci
• function flexcop_pci_read_ibi_reg
• function flexcop_pci_write_ibi_reg
• function flexcop_pci_irq_check_work
• function list_for_each_entry
• function list_for_each_entry
• function flexcop_pci_isr
• function flexcop_pci_stream_control
• function flexcop_pci_dma_init
• function flexcop_pci_dma_exit
• function flexcop_pci_init
• function flexcop_pci_exit
• function flexcop_pci_probe
• function flexcop_pci_remove

Annotated Snippet

static struct pci_driver flexcop_pci_driver = {
	.name     = "b2c2_flexcop_pci",
	.id_table = flexcop_pci_tbl,
	.probe    = flexcop_pci_probe,
	.remove   = flexcop_pci_remove,
};

module_pci_driver(flexcop_pci_driver);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_NAME);
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `flexcop-common.h`.
• Detected declarations: `struct flexcop_pci`, `function flexcop_pci_read_ibi_reg`, `function flexcop_pci_write_ibi_reg`, `function flexcop_pci_irq_check_work`, `function list_for_each_entry`, `function list_for_each_entry`, `function flexcop_pci_isr`, `function flexcop_pci_stream_control`, `function flexcop_pci_dma_init`, `function flexcop_pci_dma_exit`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: pattern 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.