drivers/bus/stm32_dbg_bus.c

File Facts

System

Linux kernel

Corpus path

drivers/bus/stm32_dbg_bus.c

Extension

.c

Size

6762 bytes

Lines

251

Domain

Driver Families

Bucket

drivers/bus

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.
• 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/bus/stm32_firewall.h
• linux/bus/stm32_firewall_device.h
• linux/device.h
• linux/err.h
• linux/kernel.h
• linux/module.h
• linux/of.h
• linux/of_platform.h
• linux/platform_device.h
• linux/pm_runtime.h
• linux/tee_drv.h
• linux/types.h

Detected Declarations

• struct stm32_dbg_bus
• enum stm32_dbg_profile
• enum stm32_dbg_pta_command
• function stm32_dbg_pta_open_session
• function stm32_dbg_pta_close_session
• function stm32_dbg_bus_grant_access
• function stm32_dbg_bus_release_access
• function optee_ctx_match
• function stm32_dbg_bus_remove
• function stm32_dbg_bus_probe
• function stm32_optee_dbg_bus_driver_exit
• function stm32_optee_dbg_bus_driver_init
• module init stm32_optee_dbg_bus_driver_init

Annotated Snippet

module_init(stm32_optee_dbg_bus_driver_init);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Gatien Chevallier <gatien.chevallier@foss.st.com>");
MODULE_DESCRIPTION("OP-TEE based STM32 debug access bus driver");

Annotation

• Immediate include surface: `linux/bus/stm32_firewall.h`, `linux/bus/stm32_firewall_device.h`, `linux/device.h`, `linux/err.h`, `linux/kernel.h`, `linux/module.h`, `linux/of.h`, `linux/of_platform.h`.
• Detected declarations: `struct stm32_dbg_bus`, `enum stm32_dbg_profile`, `enum stm32_dbg_pta_command`, `function stm32_dbg_pta_open_session`, `function stm32_dbg_pta_close_session`, `function stm32_dbg_bus_grant_access`, `function stm32_dbg_bus_release_access`, `function optee_ctx_match`, `function stm32_dbg_bus_remove`, `function stm32_dbg_bus_probe`.
• Atlas domain: Driver Families / drivers/bus.
• 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.