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190 lines
6.9 KiB
190 lines
6.9 KiB
/* |
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* PCI HotPlug Core Functions |
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* |
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* Copyright (C) 1995,2001 Compaq Computer Corporation |
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* Copyright (C) 2001 Greg Kroah-Hartman ([email protected]) |
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* Copyright (C) 2001 IBM Corp. |
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* |
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* All rights reserved. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or (at |
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* your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
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* NON INFRINGEMENT. See the GNU General Public License for more |
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* details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* Send feedback to <[email protected]> |
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* |
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*/ |
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#ifndef _PCI_HOTPLUG_H |
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#define _PCI_HOTPLUG_H |
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/** |
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* struct hotplug_slot_ops -the callbacks that the hotplug pci core can use |
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* @owner: The module owner of this structure |
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* @mod_name: The module name (KBUILD_MODNAME) of this structure |
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* @enable_slot: Called when the user wants to enable a specific pci slot |
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* @disable_slot: Called when the user wants to disable a specific pci slot |
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* @set_attention_status: Called to set the specific slot's attention LED to |
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* the specified value |
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* @hardware_test: Called to run a specified hardware test on the specified |
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* slot. |
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* @get_power_status: Called to get the current power status of a slot. |
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* If this field is NULL, the value passed in the struct hotplug_slot_info |
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* will be used when this value is requested by a user. |
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* @get_attention_status: Called to get the current attention status of a slot. |
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* If this field is NULL, the value passed in the struct hotplug_slot_info |
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* will be used when this value is requested by a user. |
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* @get_latch_status: Called to get the current latch status of a slot. |
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* If this field is NULL, the value passed in the struct hotplug_slot_info |
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* will be used when this value is requested by a user. |
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* @get_adapter_status: Called to get see if an adapter is present in the slot or not. |
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* If this field is NULL, the value passed in the struct hotplug_slot_info |
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* will be used when this value is requested by a user. |
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* @reset_slot: Optional interface to allow override of a bus reset for the |
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* slot for cases where a secondary bus reset can result in spurious |
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* hotplug events or where a slot can be reset independent of the bus. |
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* |
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* The table of function pointers that is passed to the hotplug pci core by a |
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* hotplug pci driver. These functions are called by the hotplug pci core when |
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* the user wants to do something to a specific slot (query it for information, |
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* set an LED, enable / disable power, etc.) |
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*/ |
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struct hotplug_slot_ops { |
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struct module *owner; |
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const char *mod_name; |
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int (*enable_slot) (struct hotplug_slot *slot); |
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int (*disable_slot) (struct hotplug_slot *slot); |
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int (*set_attention_status) (struct hotplug_slot *slot, u8 value); |
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int (*hardware_test) (struct hotplug_slot *slot, u32 value); |
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int (*get_power_status) (struct hotplug_slot *slot, u8 *value); |
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int (*get_attention_status) (struct hotplug_slot *slot, u8 *value); |
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int (*get_latch_status) (struct hotplug_slot *slot, u8 *value); |
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int (*get_adapter_status) (struct hotplug_slot *slot, u8 *value); |
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int (*reset_slot) (struct hotplug_slot *slot, int probe); |
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} __do_const; |
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typedef struct hotplug_slot_ops __no_const hotplug_slot_ops_no_const; |
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/** |
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* struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot |
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* @power_status: if power is enabled or not (1/0) |
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* @attention_status: if the attention light is enabled or not (1/0) |
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* @latch_status: if the latch (if any) is open or closed (1/0) |
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* @adapter_status: if there is a pci board present in the slot or not (1/0) |
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* |
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* Used to notify the hotplug pci core of the status of a specific slot. |
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*/ |
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struct hotplug_slot_info { |
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u8 power_status; |
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u8 attention_status; |
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u8 latch_status; |
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u8 adapter_status; |
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}; |
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/** |
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* struct hotplug_slot - used to register a physical slot with the hotplug pci core |
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* @ops: pointer to the &struct hotplug_slot_ops to be used for this slot |
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* @info: pointer to the &struct hotplug_slot_info for the initial values for |
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* this slot. |
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* @release: called during pci_hp_deregister to free memory allocated in a |
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* hotplug_slot structure. |
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* @private: used by the hotplug pci controller driver to store whatever it |
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* needs. |
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*/ |
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struct hotplug_slot { |
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struct hotplug_slot_ops *ops; |
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struct hotplug_slot_info *info; |
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void (*release) (struct hotplug_slot *slot); |
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void *private; |
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/* Variables below this are for use only by the hotplug pci core. */ |
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struct list_head slot_list; |
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struct pci_slot *pci_slot; |
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}; |
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static inline const char *hotplug_slot_name(const struct hotplug_slot *slot) |
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{ |
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return pci_slot_name(slot->pci_slot); |
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} |
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int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, int nr, |
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const char *name, struct module *owner, |
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const char *mod_name); |
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int pci_hp_deregister(struct hotplug_slot *slot); |
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int __must_check pci_hp_change_slot_info(struct hotplug_slot *slot, |
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struct hotplug_slot_info *info); |
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/* use a define to avoid include chaining to get THIS_MODULE & friends */ |
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#define pci_hp_register(slot, pbus, devnr, name) \ |
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__pci_hp_register(slot, pbus, devnr, name, THIS_MODULE, KBUILD_MODNAME) |
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/* PCI Setting Record (Type 0) */ |
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struct hpp_type0 { |
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u32 revision; |
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u8 cache_line_size; |
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u8 latency_timer; |
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u8 enable_serr; |
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u8 enable_perr; |
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}; |
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/* PCI-X Setting Record (Type 1) */ |
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struct hpp_type1 { |
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u32 revision; |
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u8 max_mem_read; |
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u8 avg_max_split; |
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u16 tot_max_split; |
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}; |
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/* PCI Express Setting Record (Type 2) */ |
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struct hpp_type2 { |
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u32 revision; |
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u32 unc_err_mask_and; |
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u32 unc_err_mask_or; |
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u32 unc_err_sever_and; |
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u32 unc_err_sever_or; |
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u32 cor_err_mask_and; |
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u32 cor_err_mask_or; |
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u32 adv_err_cap_and; |
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u32 adv_err_cap_or; |
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u16 pci_exp_devctl_and; |
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u16 pci_exp_devctl_or; |
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u16 pci_exp_lnkctl_and; |
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u16 pci_exp_lnkctl_or; |
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u32 sec_unc_err_sever_and; |
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u32 sec_unc_err_sever_or; |
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u32 sec_unc_err_mask_and; |
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u32 sec_unc_err_mask_or; |
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}; |
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struct hotplug_params { |
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struct hpp_type0 *t0; /* Type0: NULL if not available */ |
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struct hpp_type1 *t1; /* Type1: NULL if not available */ |
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struct hpp_type2 *t2; /* Type2: NULL if not available */ |
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struct hpp_type0 type0_data; |
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struct hpp_type1 type1_data; |
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struct hpp_type2 type2_data; |
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}; |
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#ifdef CONFIG_ACPI |
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#include <linux/acpi.h> |
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int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp); |
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int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags); |
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int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle); |
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int acpi_pci_detect_ejectable(acpi_handle handle); |
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#else |
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static inline int pci_get_hp_params(struct pci_dev *dev, |
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struct hotplug_params *hpp) |
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{ |
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return -ENODEV; |
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} |
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#endif |
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#endif
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