1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * PCI HotPlug Core Functions
5 * Copyright (C) 1995,2001 Compaq Computer Corporation
6 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
7 * Copyright (C) 2001 IBM Corp.
11 * Send feedback to <kristen.c.accardi@intel.com>
14 #ifndef _PCI_HOTPLUG_H
15 #define _PCI_HOTPLUG_H
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
23 * @hardware_test: Called to run a specified hardware test on the specified
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.
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.)
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);
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 * @private: used by the hotplug pci controller driver to store whatever it
55 * @owner: The module owner of this structure
56 * @mod_name: The module name (KBUILD_MODNAME) of this structure
59 const struct hotplug_slot_ops *ops;
62 /* Variables below this are for use only by the hotplug pci core. */
63 struct list_head slot_list;
64 struct pci_slot *pci_slot;
69 static inline const char *hotplug_slot_name(const struct hotplug_slot *slot)
71 return pci_slot_name(slot->pci_slot);
74 int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, int nr,
75 const char *name, struct module *owner,
76 const char *mod_name);
77 int __pci_hp_initialize(struct hotplug_slot *slot, struct pci_bus *bus, int nr,
78 const char *name, struct module *owner,
79 const char *mod_name);
80 int pci_hp_add(struct hotplug_slot *slot);
82 void pci_hp_del(struct hotplug_slot *slot);
83 void pci_hp_destroy(struct hotplug_slot *slot);
84 void pci_hp_deregister(struct hotplug_slot *slot);
86 /* use a define to avoid include chaining to get THIS_MODULE & friends */
87 #define pci_hp_register(slot, pbus, devnr, name) \
88 __pci_hp_register(slot, pbus, devnr, name, THIS_MODULE, KBUILD_MODNAME)
89 #define pci_hp_initialize(slot, bus, nr, name) \
90 __pci_hp_initialize(slot, bus, nr, name, THIS_MODULE, KBUILD_MODNAME)
92 /* PCI Setting Record (Type 0) */
101 /* PCI-X Setting Record (Type 1) */
109 /* PCI Express Setting Record (Type 2) */
112 u32 unc_err_mask_and;
114 u32 unc_err_sever_and;
115 u32 unc_err_sever_or;
116 u32 cor_err_mask_and;
120 u16 pci_exp_devctl_and;
121 u16 pci_exp_devctl_or;
122 u16 pci_exp_lnkctl_and;
123 u16 pci_exp_lnkctl_or;
124 u32 sec_unc_err_sever_and;
125 u32 sec_unc_err_sever_or;
126 u32 sec_unc_err_mask_and;
127 u32 sec_unc_err_mask_or;
130 struct hotplug_params {
131 struct hpp_type0 *t0; /* Type0: NULL if not available */
132 struct hpp_type1 *t1; /* Type1: NULL if not available */
133 struct hpp_type2 *t2; /* Type2: NULL if not available */
134 struct hpp_type0 type0_data;
135 struct hpp_type1 type1_data;
136 struct hpp_type2 type2_data;
140 #include <linux/acpi.h>
141 int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp);
142 bool pciehp_is_native(struct pci_dev *bridge);
143 int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge);
144 bool shpchp_is_native(struct pci_dev *bridge);
145 int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle);
146 int acpi_pci_detect_ejectable(acpi_handle handle);
148 static inline int pci_get_hp_params(struct pci_dev *dev,
149 struct hotplug_params *hpp)
154 static inline int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge)
158 static inline bool pciehp_is_native(struct pci_dev *bridge) { return true; }
159 static inline bool shpchp_is_native(struct pci_dev *bridge) { return true; }
162 static inline bool hotplug_is_native(struct pci_dev *bridge)
164 return pciehp_is_native(bridge) || shpchp_is_native(bridge);