drivers/usb/early/ehci-dbgp.c

File Facts

System

Linux kernel

Corpus path

drivers/usb/early/ehci-dbgp.c

Extension

.c

Size

26530 bytes

Lines

1093

Domain

Driver Families

Bucket

drivers/usb

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

Dependency Surface

• linux/console.h
• linux/errno.h
• linux/init.h
• linux/iopoll.h
• linux/pci_regs.h
• linux/pci_ids.h
• linux/usb/ch9.h
• linux/usb/ehci_def.h
• linux/delay.h
• linux/serial_core.h
• linux/kgdb.h
• linux/kthread.h
• asm/io.h
• asm/pci-direct.h
• asm/fixmap.h

Detected Declarations

• struct ehci_dev
• function dbgp_ehci_status
• function dbgp_ehci_status
• function IDs
• function dbgp_pid_read_update
• function dbgp_wait_until_complete
• function dbgp_mdelay
• function dbgp_breath
• function dbgp_set_data
• function dbgp_get_data
• function dbgp_bulk_write
• function dbgp_bulk_read
• function dbgp_control_msg
• function find_cap
• function __find_dbgp
• function find_dbgp
• function dbgp_ehci_startup
• function dbgp_ehci_controller_reset
• function _dbgp_external_startup
• function ehci_reset_port
• function ehci_wait_for_port
• function default_set_debug_port
• function nvidia_set_debug_port
• function detect_set_debug_port
• function early_ehci_bios_handoff
• function ehci_setup
• function early_dbgp_init
• function early_dbgp_write
• function dbgp_reset_prep
• function dbgp_external_startup
• function kgdbdbgp_read_char
• function kgdbdbgp_write_char
• function kgdbdbgp_parse_config
• function kgdbdbgp_reader_thread
• function kgdbdbgp_start_thread
• module init kgdbdbgp_start_thread
• export dbgp_reset_prep
• export dbgp_external_startup

Annotated Snippet

device_initcall(kgdbdbgp_start_thread);
#endif /* CONFIG_KGDB */

Annotation

• Immediate include surface: `linux/console.h`, `linux/errno.h`, `linux/init.h`, `linux/iopoll.h`, `linux/pci_regs.h`, `linux/pci_ids.h`, `linux/usb/ch9.h`, `linux/usb/ehci_def.h`.
• Detected declarations: `struct ehci_dev`, `function dbgp_ehci_status`, `function dbgp_ehci_status`, `function IDs`, `function dbgp_pid_read_update`, `function dbgp_wait_until_complete`, `function dbgp_mdelay`, `function dbgp_breath`, `function dbgp_set_data`, `function dbgp_get_data`.
• Atlas domain: Driver Families / drivers/usb.
• Implementation status: integration implementation candidate.

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.