drivers/bus/arm-cci.c

File Facts

System

Linux kernel

Corpus path

drivers/bus/arm-cci.c

Extension

.c

Size

15863 bytes

Lines

588

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/arm-cci.h
• linux/io.h
• linux/module.h
• linux/of_address.h
• linux/of_platform.h
• linux/platform_device.h
• linux/slab.h
• asm/cacheflush.h
• asm/smp_plat.h

Detected Declarations

• struct cci_nb_ports
• struct cci_ace_port
• struct cpu_port
• enum cci_ace_port_type
• function cci_platform_probe
• function cci_platform_init
• function init_cpu_port
• function cpu_port_is_valid
• function cpu_port_match
• function __cci_ace_get_port
• function cci_ace_get_port
• function cci_ace_init_ports
• function for_each_possible_cpu
• function cci_port_control
• function cci_disable_port_by_cpu
• function cci_enable_port_for_self
• function __cci_control_port_by_device
• function __cci_control_port_by_index
• function cci_probe_ports
• function for_each_available_child_of_node
• function cci_probe_ports
• function cci_probe
• function cci_init
• function cci_probed
• module init cci_platform_init
• export cci_ace_get_port
• export cci_disable_port_by_cpu
• export __cci_control_port_by_device
• export __cci_control_port_by_index
• export cci_probed

Annotated Snippet

core_initcall(cci_platform_init);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ARM CCI support");

Annotation

• Immediate include surface: `linux/arm-cci.h`, `linux/io.h`, `linux/module.h`, `linux/of_address.h`, `linux/of_platform.h`, `linux/platform_device.h`, `linux/slab.h`, `asm/cacheflush.h`.
• Detected declarations: `struct cci_nb_ports`, `struct cci_ace_port`, `struct cpu_port`, `enum cci_ace_port_type`, `function cci_platform_probe`, `function cci_platform_init`, `function init_cpu_port`, `function cpu_port_is_valid`, `function cpu_port_match`, `function __cci_ace_get_port`.
• Atlas domain: Driver Families / drivers/bus.
• 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.