drivers/nfc/nfcsim.c

File Facts

System

Linux kernel

Corpus path

drivers/nfc/nfcsim.c

Extension

.c

Size

9963 bytes

Lines

496

Domain

Driver Families

Bucket

drivers/nfc

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.
• 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/device.h
• linux/kernel.h
• linux/module.h
• linux/ctype.h
• linux/debugfs.h
• linux/nfc.h
• net/nfc/nfc.h
• net/nfc/digital.h

Detected Declarations

• struct nfcsim
• struct nfcsim_link
• function nfcsim_link_free
• function nfcsim_link_recv_wake
• function nfcsim_link_set_skb
• function nfcsim_link_recv_cancel
• function nfcsim_link_shutdown
• function nfcsim_send_wq
• function nfcsim_recv_wq
• function nfcsim_send
• function nfcsim_abort_cmd
• function nfcsim_switch_rf
• function nfcsim_in_configure_hw
• function nfcsim_in_send_cmd
• function nfcsim_tg_configure_hw
• function nfcsim_tg_send_cmd
• function nfcsim_tg_listen
• function nfcsim_debugfs_init
• function nfcsim_debugfs_remove
• function nfcsim_debugfs_init_dev
• function nfcsim_device_free
• function nfcsim_init
• function nfcsim_exit
• module init nfcsim_init

Annotated Snippet

module_init(nfcsim_init);
module_exit(nfcsim_exit);

MODULE_DESCRIPTION("NFCSim driver ver " NFCSIM_VERSION);
MODULE_VERSION(NFCSIM_VERSION);
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/device.h`, `linux/kernel.h`, `linux/module.h`, `linux/ctype.h`, `linux/debugfs.h`, `linux/nfc.h`, `net/nfc/nfc.h`, `net/nfc/digital.h`.
• Detected declarations: `struct nfcsim`, `struct nfcsim_link`, `function nfcsim_link_free`, `function nfcsim_link_recv_wake`, `function nfcsim_link_set_skb`, `function nfcsim_link_recv_cancel`, `function nfcsim_link_shutdown`, `function nfcsim_send_wq`, `function nfcsim_recv_wq`, `function nfcsim_send`.
• Atlas domain: Driver Families / drivers/nfc.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.