drivers/tty/hvc/hvc_dcc.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/hvc/hvc_dcc.c

Extension

.c

Size

7965 bytes

Lines

310

Domain

Driver Families

Bucket

drivers/tty

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/console.h
• linux/cpu.h
• linux/cpumask.h
• linux/init.h
• linux/kfifo.h
• linux/serial.h
• linux/serial_core.h
• linux/smp.h
• linux/spinlock.h
• asm/dcc.h
• asm/processor.h
• hvc_console.h

Detected Declarations

• function dcc_uart_console_putchar
• function dcc_early_write
• function dcc_early_console_setup
• function hvc_dcc_put_chars
• function hvc_dcc_get_chars
• function hvc_dcc_check
• function dcc_put_work
• function dcc_get_work
• function hvc_dcc0_put_chars
• function hvc_dcc0_get_chars
• function hvc_dcc_console_init
• function hvc_dcc_init
• module init hvc_dcc_init

Annotated Snippet

device_initcall(hvc_dcc_init);

Annotation

• Immediate include surface: `linux/console.h`, `linux/cpu.h`, `linux/cpumask.h`, `linux/init.h`, `linux/kfifo.h`, `linux/serial.h`, `linux/serial_core.h`, `linux/smp.h`.
• Detected declarations: `function dcc_uart_console_putchar`, `function dcc_early_write`, `function dcc_early_console_setup`, `function hvc_dcc_put_chars`, `function hvc_dcc_get_chars`, `function hvc_dcc_check`, `function dcc_put_work`, `function dcc_get_work`, `function hvc_dcc0_put_chars`, `function hvc_dcc0_get_chars`.
• Atlas domain: Driver Families / drivers/tty.
• 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.