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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111/* SPDX-License-Identifier: GPL-2.0+ *//* * PCI HotPlug Core Functions * * Copyright (C) 1995,2001 Compaq Computer Corporation * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2001 IBM Corp. * * All rights reserved. * * Send feedback to <kristen.c.accardi@intel.com> * */#ifndef _PCI_HOTPLUG_H#define _PCI_HOTPLUG_H
/** * struct hotplug_slot_ops -the callbacks that the hotplug pci core can use * @enable_slot: Called when the user wants to enable a specific pci slot * @disable_slot: Called when the user wants to disable a specific pci slot * @set_attention_status: Called to set the specific slot's attention LED to * the specified value * @hardware_test: Called to run a specified hardware test on the specified * slot. * @get_power_status: Called to get the current power status of a slot. * @get_attention_status: Called to get the current attention status of a slot. * @get_latch_status: Called to get the current latch status of a slot. * @get_adapter_status: Called to get see if an adapter is present in the slot or not. * @reset_slot: Optional interface to allow override of a bus reset for the * slot for cases where a secondary bus reset can result in spurious * hotplug events or where a slot can be reset independent of the bus. * * The table of function pointers that is passed to the hotplug pci core by a * hotplug pci driver. These functions are called by the hotplug pci core when * the user wants to do something to a specific slot (query it for information, * set an LED, enable / disable power, etc.) */struct hotplug_slot_ops { int (*enable_slot) (struct hotplug_slot *slot); int (*disable_slot) (struct hotplug_slot *slot); int (*set_attention_status) (struct hotplug_slot *slot, u8 value); int (*hardware_test) (struct hotplug_slot *slot, u32 value); int (*get_power_status) (struct hotplug_slot *slot, u8 *value); int (*get_attention_status) (struct hotplug_slot *slot, u8 *value); int (*get_latch_status) (struct hotplug_slot *slot, u8 *value); int (*get_adapter_status) (struct hotplug_slot *slot, u8 *value); int (*reset_slot) (struct hotplug_slot *slot, bool probe);};
/** * struct hotplug_slot - used to register a physical slot with the hotplug pci core * @ops: pointer to the &struct hotplug_slot_ops to be used for this slot * @pci_slot: represents a physical slot * @owner: The module owner of this structure * @mod_name: The module name (KBUILD_MODNAME) of this structure */struct hotplug_slot { const struct hotplug_slot_ops *ops;
/* Variables below this are for use only by the hotplug pci core. */ struct pci_slot *pci_slot; struct module *owner; const char *mod_name;};
static inline const char *hotplug_slot_name(const struct hotplug_slot *slot){ return pci_slot_name(slot->pci_slot);}
int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, int nr, const char *name, struct module *owner, const char *mod_name);int __pci_hp_initialize(struct hotplug_slot *slot, struct pci_bus *bus, int nr, const char *name, struct module *owner, const char *mod_name);int pci_hp_add(struct hotplug_slot *slot);
void pci_hp_del(struct hotplug_slot *slot);void pci_hp_destroy(struct hotplug_slot *slot);void pci_hp_deregister(struct hotplug_slot *slot);
/* use a define to avoid include chaining to get THIS_MODULE & friends */#define pci_hp_register(slot, pbus, devnr, name) \ __pci_hp_register(slot, pbus, devnr, name, THIS_MODULE, KBUILD_MODNAME)#define pci_hp_initialize(slot, bus, nr, name) \ __pci_hp_initialize(slot, bus, nr, name, THIS_MODULE, KBUILD_MODNAME)
#ifdef CONFIG_ACPI#include <linux/acpi.h>bool pciehp_is_native(struct pci_dev *bridge);int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge);bool shpchp_is_native(struct pci_dev *bridge);int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle);int acpi_pci_detect_ejectable(acpi_handle handle);#elsestatic inline int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge){ return 0;}static inline bool pciehp_is_native(struct pci_dev *bridge) { return true; }static inline bool shpchp_is_native(struct pci_dev *bridge) { return true; }#endif
static inline bool hotplug_is_native(struct pci_dev *bridge){ return (bridge->is_pciehp && pciehp_is_native(bridge)) || shpchp_is_native(bridge);}#endif