drivers/pci/hotplug/octep_hp.c

File Facts

System

Linux kernel

Corpus path

drivers/pci/hotplug/octep_hp.c

Extension

.c

Size

11196 bytes

Lines

428

Domain

Representative Device Path

Bucket

PCIe NVMe Storage Path

Inferred role

Representative Device Path: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Part of the selected hardware vertical slice: PCI discovery, driver binding, NVMe queues, block requests, DMA, interrupts, and completion.

• Part of the selected hardware vertical slice: PCI discovery, driver binding, NVMe queues, block requests, DMA, interrupts, and completion.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/cleanup.h
• linux/container_of.h
• linux/delay.h
• linux/dev_printk.h
• linux/init.h
• linux/interrupt.h
• linux/io-64-nonatomic-lo-hi.h
• linux/kernel.h
• linux/list.h
• linux/module.h
• linux/mutex.h
• linux/pci.h
• linux/pci_hotplug.h
• linux/slab.h
• linux/spinlock.h
• linux/workqueue.h

Detected Declarations

• struct octep_hp_cmd
• struct octep_hp_slot
• struct octep_hp_intr_info
• struct octep_hp_controller
• enum octep_hp_intr_type
• function octep_hp_enable_pdev
• function octep_hp_disable_pdev
• function octep_hp_enable_slot
• function octep_hp_disable_slot
• function octep_hp_register_slot
• function octep_hp_deregister_slot
• function octep_hp_cmd_handler
• function octep_hp_work_handler
• function octep_hp_intr_type
• function octep_hp_intr_handler
• function octep_hp_irq_cleanup
• function octep_hp_request_irq
• function octep_hp_controller_setup
• function octep_hp_pci_probe

Annotated Snippet

static struct pci_driver octep_hp = {
	.name = OCTEP_HP_DRV_NAME,
	.id_table = octep_hp_pci_map,
	.probe = octep_hp_pci_probe,
};

module_pci_driver(octep_hp);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Marvell");
MODULE_DESCRIPTION("Marvell OCTEON PCI Hotplug driver");

Annotation

• Immediate include surface: `linux/cleanup.h`, `linux/container_of.h`, `linux/delay.h`, `linux/dev_printk.h`, `linux/init.h`, `linux/interrupt.h`, `linux/io-64-nonatomic-lo-hi.h`, `linux/kernel.h`.
• Detected declarations: `struct octep_hp_cmd`, `struct octep_hp_slot`, `struct octep_hp_intr_info`, `struct octep_hp_controller`, `enum octep_hp_intr_type`, `function octep_hp_enable_pdev`, `function octep_hp_disable_pdev`, `function octep_hp_enable_slot`, `function octep_hp_disable_slot`, `function octep_hp_register_slot`.
• Atlas domain: Representative Device Path / PCIe NVMe Storage Path.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• 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.