drivers/pci/hotplug/cpci_hotplug.h

Source file repositories/reference/linux-study-clean/drivers/pci/hotplug/cpci_hotplug.h

File Facts

System
Linux kernel
Corpus path
drivers/pci/hotplug/cpci_hotplug.h
Extension
.h
Size
2514 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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct slot {
	u8 number;
	unsigned int devfn;
	struct pci_bus *bus;
	struct pci_dev *dev;
	unsigned int latch_status:1;
	unsigned int adapter_status:1;
	unsigned int extracting;
	struct hotplug_slot hotplug_slot;
	struct list_head slot_list;
};

struct cpci_hp_controller_ops {
	int (*query_enum)(void);
	int (*enable_irq)(void);
	int (*disable_irq)(void);
	int (*check_irq)(void *dev_id);
};

struct cpci_hp_controller {
	unsigned int irq;
	unsigned long irq_flags;
	char *devname;
	void *dev_id;
	char *name;
	struct cpci_hp_controller_ops *ops;
};

static inline const char *slot_name(struct slot *slot)
{
	return hotplug_slot_name(&slot->hotplug_slot);
}

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

int cpci_hp_register_controller(struct cpci_hp_controller *controller);
int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
int cpci_hp_unregister_bus(struct pci_bus *bus);
int cpci_hp_start(void);
int cpci_hp_stop(void);

/* Global variables */
extern int cpci_debug;

/*
 * Internal function prototypes, these functions should not be used by
 * board/chassis drivers.
 */
u8 cpci_get_attention_status(struct slot *slot);
u16 cpci_get_hs_csr(struct slot *slot);
int cpci_set_attention_status(struct slot *slot, int status);
int cpci_check_and_clear_ins(struct slot *slot);
int cpci_check_ext(struct slot *slot);
int cpci_clear_ext(struct slot *slot);
int cpci_led_on(struct slot *slot);
int cpci_led_off(struct slot *slot);
int cpci_configure_slot(struct slot *slot);
int cpci_unconfigure_slot(struct slot *slot);

#ifdef CONFIG_HOTPLUG_PCI_CPCI
int cpci_hotplug_init(int debug);
#else
static inline int cpci_hotplug_init(int debug) { return 0; }
#endif

#endif	/* _CPCI_HOTPLUG_H */

Annotation

Implementation Notes