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/* SPDX-License-Identifier: GPL-2.0+ */
* CompactPCI Hot Plug Core Functions
* Copyright (C) 2002 SOMA Networks, Inc.
* Copyright (C) 2001 Greg Kroah-Hartman (
* Copyright (C) 2001 IBM Corp.
* All rights reserved.
* Send feedback to <>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
/* PICMG 2.1 R2.0 HS CSR bits: */
#define HS_CSR_INS 0x0080
#define HS_CSR_EXT 0x0040
#define HS_CSR_PI 0x0030
#define HS_CSR_LOO 0x0008
#define HS_CSR_PIE 0x0004
#define HS_CSR_EIM 0x0002
#define HS_CSR_DHA 0x0001
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);
int (*hardware_test)(struct slot *slot, u32 value);
u8 (*get_power)(struct slot *slot);
int (*set_power)(struct slot *slot, int value);
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);
u8 cpci_get_latch_status(struct slot *slot);
u8 cpci_get_adapter_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);
int cpci_hotplug_init(int debug);
static inline int cpci_hotplug_init(int debug) { return 0; }
#endif /* _CPCI_HOTPLUG_H */