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1 : : /* SPDX-License-Identifier: GPL-2.0+ */ 2 : : /* 3 : : * PCI HotPlug Core Functions 4 : : * 5 : : * Copyright (C) 1995,2001 Compaq Computer Corporation 6 : : * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) 7 : : * Copyright (C) 2001 IBM Corp. 8 : : * 9 : : * All rights reserved. 10 : : * 11 : : * Send feedback to <kristen.c.accardi@intel.com> 12 : : * 13 : : */ 14 : : #ifndef _PCI_HOTPLUG_H 15 : : #define _PCI_HOTPLUG_H 16 : : 17 : : /** 18 : : * struct hotplug_slot_ops -the callbacks that the hotplug pci core can use 19 : : * @enable_slot: Called when the user wants to enable a specific pci slot 20 : : * @disable_slot: Called when the user wants to disable a specific pci slot 21 : : * @set_attention_status: Called to set the specific slot's attention LED to 22 : : * the specified value 23 : : * @hardware_test: Called to run a specified hardware test on the specified 24 : : * slot. 25 : : * @get_power_status: Called to get the current power status of a slot. 26 : : * @get_attention_status: Called to get the current attention status of a slot. 27 : : * @get_latch_status: Called to get the current latch status of a slot. 28 : : * @get_adapter_status: Called to get see if an adapter is present in the slot or not. 29 : : * @reset_slot: Optional interface to allow override of a bus reset for the 30 : : * slot for cases where a secondary bus reset can result in spurious 31 : : * hotplug events or where a slot can be reset independent of the bus. 32 : : * 33 : : * The table of function pointers that is passed to the hotplug pci core by a 34 : : * hotplug pci driver. These functions are called by the hotplug pci core when 35 : : * the user wants to do something to a specific slot (query it for information, 36 : : * set an LED, enable / disable power, etc.) 37 : : */ 38 : : struct hotplug_slot_ops { 39 : : int (*enable_slot) (struct hotplug_slot *slot); 40 : : int (*disable_slot) (struct hotplug_slot *slot); 41 : : int (*set_attention_status) (struct hotplug_slot *slot, u8 value); 42 : : int (*hardware_test) (struct hotplug_slot *slot, u32 value); 43 : : int (*get_power_status) (struct hotplug_slot *slot, u8 *value); 44 : : int (*get_attention_status) (struct hotplug_slot *slot, u8 *value); 45 : : int (*get_latch_status) (struct hotplug_slot *slot, u8 *value); 46 : : int (*get_adapter_status) (struct hotplug_slot *slot, u8 *value); 47 : : int (*reset_slot) (struct hotplug_slot *slot, int probe); 48 : : }; 49 : : 50 : : /** 51 : : * struct hotplug_slot - used to register a physical slot with the hotplug pci core 52 : : * @ops: pointer to the &struct hotplug_slot_ops to be used for this slot 53 : : * @owner: The module owner of this structure 54 : : * @mod_name: The module name (KBUILD_MODNAME) of this structure 55 : : */ 56 : : struct hotplug_slot { 57 : : const struct hotplug_slot_ops *ops; 58 : : 59 : : /* Variables below this are for use only by the hotplug pci core. */ 60 : : struct list_head slot_list; 61 : : struct pci_slot *pci_slot; 62 : : struct module *owner; 63 : : const char *mod_name; 64 : : }; 65 : : 66 : 319 : static inline const char *hotplug_slot_name(const struct hotplug_slot *slot) 67 : : { 68 [ # # ]: 319 : return pci_slot_name(slot->pci_slot); 69 : : } 70 : : 71 : : int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, int nr, 72 : : const char *name, struct module *owner, 73 : : const char *mod_name); 74 : : int __pci_hp_initialize(struct hotplug_slot *slot, struct pci_bus *bus, int nr, 75 : : const char *name, struct module *owner, 76 : : const char *mod_name); 77 : : int pci_hp_add(struct hotplug_slot *slot); 78 : : 79 : : void pci_hp_del(struct hotplug_slot *slot); 80 : : void pci_hp_destroy(struct hotplug_slot *slot); 81 : : void pci_hp_deregister(struct hotplug_slot *slot); 82 : : 83 : : /* use a define to avoid include chaining to get THIS_MODULE & friends */ 84 : : #define pci_hp_register(slot, pbus, devnr, name) \ 85 : : __pci_hp_register(slot, pbus, devnr, name, THIS_MODULE, KBUILD_MODNAME) 86 : : #define pci_hp_initialize(slot, bus, nr, name) \ 87 : : __pci_hp_initialize(slot, bus, nr, name, THIS_MODULE, KBUILD_MODNAME) 88 : : 89 : : #ifdef CONFIG_ACPI 90 : : #include <linux/acpi.h> 91 : : bool pciehp_is_native(struct pci_dev *bridge); 92 : : int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge); 93 : : bool shpchp_is_native(struct pci_dev *bridge); 94 : : int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle); 95 : : int acpi_pci_detect_ejectable(acpi_handle handle); 96 : : #else 97 : : static inline int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge) 98 : : { 99 : : return 0; 100 : : } 101 : : static inline bool pciehp_is_native(struct pci_dev *bridge) { return true; } 102 : : static inline bool shpchp_is_native(struct pci_dev *bridge) { return true; } 103 : : #endif 104 : : 105 : 0 : static inline bool hotplug_is_native(struct pci_dev *bridge) 106 : : { 107 [ # # # # ]: 0 : return pciehp_is_native(bridge) || shpchp_is_native(bridge); 108 : : } 109 : : #endif