drivers/pci/hotplug/rpaphp.h

File Facts

System

Linux kernel

Corpus path

drivers/pci/hotplug/rpaphp.h

Extension

.h

Size

2452 bytes

Lines

100

Domain

Representative Device Path

Bucket

PCIe NVMe Storage Path

Inferred role

Representative Device Path: implementation source

Status

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

Dependency Surface

• linux/pci.h
• linux/pci_hotplug.h

Detected Declarations

• struct slot

Annotated Snippet

struct slot {
	struct list_head rpaphp_slot_list;
	int state;
	u32 index;
	u32 type;
	u32 power_domain;
	u8 attention_status;
	char *name;
	struct device_node *dn;
	struct pci_bus *bus;
	struct list_head *pci_devs;
	struct hotplug_slot hotplug_slot;
};

extern const struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
extern struct list_head rpaphp_slot_head;

static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
{
	return container_of(hotplug_slot, struct slot, hotplug_slot);
}

/* function prototypes */

/* rpaphp_pci.c */
int rpaphp_enable_slot(struct slot *slot);
int rpaphp_get_sensor_state(struct slot *slot, int *state);

/* rpaphp_core.c */
int rpaphp_add_slot(struct device_node *dn);
int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
		char *drc_type);

/* rpaphp_slot.c */
void dealloc_slot_struct(struct slot *slot);
struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
int rpaphp_register_slot(struct slot *slot);
int rpaphp_deregister_slot(struct slot *slot);

#endif				/* _PPC64PHP_H */

Annotation

• Immediate include surface: `linux/pci.h`, `linux/pci_hotplug.h`.
• Detected declarations: `struct slot`.
• Atlas domain: Representative Device Path / PCIe NVMe Storage Path.
• Implementation status: source 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.