drivers/tty/serial/sb1250-duart.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/sb1250-duart.c

Extension

.c

Size

24374 bytes

Lines

966

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/compiler.h
• linux/console.h
• linux/delay.h
• linux/errno.h
• linux/init.h
• linux/interrupt.h
• linux/ioport.h
• linux/kernel.h
• linux/module.h
• linux/major.h
• linux/serial.h
• linux/serial_core.h
• linux/spinlock.h
• linux/sysrq.h
• linux/tty.h
• linux/tty_flip.h
• linux/types.h
• linux/refcount.h
• linux/io.h
• asm/sibyte/sb1250.h
• asm/sibyte/sb1250_uart.h
• asm/sibyte/swarm.h
• asm/sibyte/bcm1480_regs.h
• asm/sibyte/bcm1480_int.h
• asm/sibyte/sb1250_regs.h
• asm/sibyte/sb1250_int.h

Detected Declarations

• struct sbd_port
• struct sbd_duart
• function __read_sbdchn
• function __read_sbdshr
• function __write_sbdchn
• function __write_sbdshr
• function __war_sbd1956
• function read_sbdchn
• function read_sbdshr
• function write_sbdchn
• function write_sbdshr
• function sbd_receive_ready
• function sbd_receive_drain
• function sbd_transmit_ready
• function sbd_transmit_drain
• function sbd_transmit_empty
• function sbd_line_drain
• function sbd_tx_empty
• function sbd_get_mctrl
• function sbd_set_mctrl
• function sbd_stop_tx
• function sbd_start_tx
• function sbd_stop_rx
• function sbd_enable_ms
• function sbd_break_ctl
• function sbd_receive_chars
• function sbd_transmit_chars
• function sbd_status_handle
• function sbd_interrupt
• function sbd_startup
• function sbd_shutdown
• function sbd_init_port
• function sbd_set_termios
• function sbd_release_port
• function sbd_map_port
• function sbd_request_port
• function sbd_config_port
• function sbd_verify_port
• function sbd_probe_duarts
• function sbd_console_putchar
• function sbd_console_write
• function sbd_console_setup
• function sbd_serial_console_init
• function sbd_init
• function sbd_exit
• module init sbd_init

Annotated Snippet

module_init(sbd_init);
module_exit(sbd_exit);

Annotation

• Immediate include surface: `linux/compiler.h`, `linux/console.h`, `linux/delay.h`, `linux/errno.h`, `linux/init.h`, `linux/interrupt.h`, `linux/ioport.h`, `linux/kernel.h`.
• Detected declarations: `struct sbd_port`, `struct sbd_duart`, `function __read_sbdchn`, `function __read_sbdshr`, `function __write_sbdchn`, `function __write_sbdshr`, `function __war_sbd1956`, `function read_sbdchn`, `function read_sbdshr`, `function write_sbdchn`.
• Atlas domain: Driver Families / drivers/tty.
• Implementation status: integration implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.