drivers/char/ipmi/ipmi_ssif.c

File Facts

System

Linux kernel

Corpus path

drivers/char/ipmi/ipmi_ssif.c

Extension

.c

Size

57390 bytes

Lines

2208

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.
• 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/modversions.h
• linux/module.h
• linux/moduleparam.h
• linux/sched.h
• linux/seq_file.h
• linux/timer.h
• linux/delay.h
• linux/errno.h
• linux/spinlock.h
• linux/slab.h
• linux/list.h
• linux/i2c.h
• linux/ipmi_smi.h
• linux/init.h
• linux/dmi.h
• linux/kthread.h
• linux/acpi.h
• linux/ctype.h
• linux/time64.h
• ipmi_dmi.h

Detected Declarations

• struct ssif_addr_info
• struct ssif_info
• struct ssif_info
• enum ssif_intf_state
• enum ssif_stat_indexes
• function ipmi_ssif_unlock_cond
• function deliver_recv_msg
• function return_hosed_msg
• function start_clear_flags
• function start_flag_fetch
• function check_start_send
• function start_event_fetch
• function start_recv_msg_fetch
• function handle_flags
• function ipmi_ssif_thread
• function ssif_i2c_send
• function start_get
• function retry_timeout
• function watch_timeout
• function ssif_alert
• function msg_done_handler
• function msg_written_handler
• function start_resend
• function start_send
• function start_next_msg
• function sender
• function get_smi_info
• function request_events
• function ssif_set_need_watch
• function ssif_start_processing
• function DEVICE_ATTR
• function shutdown_ssif
• function ssif_remove
• function list_for_each_entry
• function read_response
• function do_cmd
• function ssif_detect
• function strcmp_nospace
• function check_acpi
• function find_slave_address
• function start_multipart_test
• function test_multipart_messages
• function ssif_remove_dup
• function ssif_add_infos
• function ssif_check_and_remove
• function list_for_each_entry
• function ssif_probe
• function ipmi_register_smi

Annotated Snippet

module_init(init_ipmi_ssif);

static void __exit cleanup_ipmi_ssif(void)
{
	if (!initialized)
		return;

	initialized = false;

	i2c_del_driver(&ssif_i2c_driver);

	kfree(ssif_i2c_driver.address_list);

	if (ssif_trydmi && platform_registered)
		platform_driver_unregister(&ipmi_driver);

	free_ssif_clients();
}
module_exit(cleanup_ipmi_ssif);

MODULE_ALIAS("platform:dmi-ipmi-ssif");
MODULE_AUTHOR("Todd C Davis <todd.c.davis@intel.com>, Corey Minyard <minyard@acm.org>");
MODULE_DESCRIPTION("IPMI driver for management controllers on a SMBus");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/modversions.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/sched.h`, `linux/seq_file.h`, `linux/timer.h`, `linux/delay.h`, `linux/errno.h`.
• Detected declarations: `struct ssif_addr_info`, `struct ssif_info`, `struct ssif_info`, `enum ssif_intf_state`, `enum ssif_stat_indexes`, `function ipmi_ssif_unlock_cond`, `function deliver_recv_msg`, `function return_hosed_msg`, `function start_clear_flags`, `function start_flag_fetch`.
• 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.