drivers/infiniband/hw/efa/efa_main.c

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/hw/efa/efa_main.c

Extension

.c

Size

17961 bytes

Lines

707

Domain

Driver Families

Bucket

drivers/infiniband

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/module.h
• linux/pci.h
• linux/utsname.h
• linux/version.h
• rdma/ib_user_verbs.h
• rdma/uverbs_ioctl.h
• efa.h

Detected Declarations

• function unimplemented_aenq_handler
• function efa_keep_alive
• function efa_release_bars
• function efa_process_comp_eqe
• function efa_process_eqe
• function efa_intr_msix_comp
• function efa_intr_msix_mgmnt
• function efa_request_irq
• function efa_setup_comp_irq
• function efa_free_irq
• function efa_setup_mgmnt_irq
• function efa_set_mgmnt_irq
• function efa_request_doorbell_bar
• function efa_release_doorbell_bar
• function efa_update_hw_hints
• function efa_stats_init
• function efa_set_host_info
• function efa_destroy_eq
• function efa_create_eq
• function efa_create_eqs
• function efa_destroy_eqs
• function efa_ib_device_add
• function efa_ib_device_remove
• function efa_disable_msix
• function efa_enable_msix
• function efa_device_init
• function efa_remove_device
• function efa_probe
• function efa_remove
• function efa_shutdown

Annotated Snippet

static struct pci_driver efa_pci_driver = {
	.name           = DRV_MODULE_NAME,
	.id_table       = efa_pci_tbl,
	.probe          = efa_probe,
	.remove         = efa_remove,
	.shutdown       = efa_shutdown,
};

module_pci_driver(efa_pci_driver);

Annotation

• Immediate include surface: `linux/module.h`, `linux/pci.h`, `linux/utsname.h`, `linux/version.h`, `rdma/ib_user_verbs.h`, `rdma/uverbs_ioctl.h`, `efa.h`.
• Detected declarations: `function unimplemented_aenq_handler`, `function efa_keep_alive`, `function efa_release_bars`, `function efa_process_comp_eqe`, `function efa_process_eqe`, `function efa_intr_msix_comp`, `function efa_intr_msix_mgmnt`, `function efa_request_irq`, `function efa_setup_comp_irq`, `function efa_free_irq`.
• Atlas domain: Driver Families / drivers/infiniband.
• 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.