drivers/s390/char/sclp_tty.c

File Facts

System

Linux kernel

Corpus path

drivers/s390/char/sclp_tty.c

Extension

.c

Size

15107 bytes

Lines

575

Domain

Driver Families

Bucket

drivers/s390

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/kmod.h
• linux/tty.h
• linux/tty_driver.h
• linux/tty_flip.h
• linux/err.h
• linux/init.h
• linux/interrupt.h
• linux/gfp.h
• linux/uaccess.h
• ctrlchar.h
• sclp.h
• sclp_rw.h
• sclp_tty.h

Detected Declarations

• function sclp_tty_open
• function sclp_tty_close
• function sclp_tty_write_room
• function sclp_ttybuf_callback
• function __sclp_ttybuf_emit
• function sclp_tty_timeout
• function sclp_tty_write_string
• function sclp_tty_write
• function routine
• function put_char
• function SCCB
• function sclp_tty_flush_buffer
• function sclp_tty_input
• function sclp_switch_cases
• function sclp_get_input
• function sclp_eval_selfdeftextmsg
• function sclp_eval_textcmd
• function sclp_eval_cpmsu
• function sclp_eval_mdsmu
• function sclp_tty_receiver
• function sclp_tty_state_change
• function __sclp_tty_free_pages
• function list_for_each_safe
• function sclp_tty_init
• module init sclp_tty_init

Annotated Snippet

device_initcall(sclp_tty_init);

Annotation

• Immediate include surface: `linux/kmod.h`, `linux/tty.h`, `linux/tty_driver.h`, `linux/tty_flip.h`, `linux/err.h`, `linux/init.h`, `linux/interrupt.h`, `linux/gfp.h`.
• Detected declarations: `function sclp_tty_open`, `function sclp_tty_close`, `function sclp_tty_write_room`, `function sclp_ttybuf_callback`, `function __sclp_ttybuf_emit`, `function sclp_tty_timeout`, `function sclp_tty_write_string`, `function sclp_tty_write`, `function routine`, `function put_char`.
• Atlas domain: Driver Families / drivers/s390.
• 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.