drivers/fpga/dfl-pci.c

File Facts

System

Linux kernel

Corpus path

drivers/fpga/dfl-pci.c

Extension

.c

Size

11808 bytes

Lines

447

Domain

Driver Families

Bucket

drivers/fpga

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.
• 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/pci.h
• linux/dma-mapping.h
• linux/types.h
• linux/kernel.h
• linux/module.h
• linux/stddef.h
• linux/errno.h
• dfl.h

Detected Declarations

• struct cci_drvdata
• function cci_pci_alloc_irq
• function cci_pci_free_irq
• function cci_init_drvdata
• function cci_remove_feature_devs
• function find_dfls_by_vsec
• function find_dfls_by_default
• function cci_enumerate_feature_devs
• function cci_pci_probe
• function cci_pci_sriov_configure
• function cci_pci_remove

Annotated Snippet

static struct pci_driver cci_pci_driver = {
	.name = DRV_NAME,
	.id_table = cci_pcie_id_tbl,
	.probe = cci_pci_probe,
	.remove = cci_pci_remove,
	.sriov_configure = cci_pci_sriov_configure,
};

module_pci_driver(cci_pci_driver);

MODULE_DESCRIPTION("FPGA DFL PCIe Device Driver");
MODULE_AUTHOR("Intel Corporation");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/pci.h`, `linux/dma-mapping.h`, `linux/types.h`, `linux/kernel.h`, `linux/module.h`, `linux/stddef.h`, `linux/errno.h`, `dfl.h`.
• Detected declarations: `struct cci_drvdata`, `function cci_pci_alloc_irq`, `function cci_pci_free_irq`, `function cci_init_drvdata`, `function cci_remove_feature_devs`, `function find_dfls_by_vsec`, `function find_dfls_by_default`, `function cci_enumerate_feature_devs`, `function cci_pci_probe`, `function cci_pci_sriov_configure`.
• Atlas domain: Driver Families / drivers/fpga.
• 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.