drivers/char/ipmi/ipmi_poweroff.c

File Facts

System

Linux kernel

Corpus path

drivers/char/ipmi/ipmi_poweroff.c

Extension

.c

Size

18700 bytes

Lines

720

Domain

Driver Families

Bucket

drivers/char

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/moduleparam.h
• linux/proc_fs.h
• linux/string.h
• linux/completion.h
• linux/pm.h
• linux/kdev_t.h
• linux/ipmi.h
• linux/ipmi_smi.h
• linux/sysctl.h

Detected Declarations

• struct poweroff_function
• function set_param_ifnum
• function dummy_smi_free
• function dummy_recv_free
• function receive_handler
• function ipmi_request_wait_for_response
• function ipmi_request_in_rc_mode
• function pps_poweroff_atca
• function ipmi_atca_detect
• function ipmi_poweroff_atca
• function drivers
• function ipmi_cpi1_detect
• function ipmi_poweroff_cpi1
• function ipmi_dell_chassis_detect
• function ipmi_hp_chassis_detect
• function ipmi_chassis_detect
• function ipmi_poweroff_chassis
• function ipmi_poweroff_function
• function ipmi_po_new_smi
• function ipmi_po_smi_gone
• function ipmi_poweroff_init
• function ipmi_poweroff_cleanup
• module init ipmi_poweroff_init

Annotated Snippet

module_init(ipmi_poweroff_init);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>");
MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot");

Annotation

• Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/proc_fs.h`, `linux/string.h`, `linux/completion.h`, `linux/pm.h`, `linux/kdev_t.h`, `linux/ipmi.h`.
• Detected declarations: `struct poweroff_function`, `function set_param_ifnum`, `function dummy_smi_free`, `function dummy_recv_free`, `function receive_handler`, `function ipmi_request_wait_for_response`, `function ipmi_request_in_rc_mode`, `function pps_poweroff_atca`, `function ipmi_atca_detect`, `function ipmi_poweroff_atca`.
• Atlas domain: Driver Families / drivers/char.
• 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.