| /* |
| * 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. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| * NON INFRINGEMENT. See the GNU General Public License for more |
| * details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Send feedback to <kristen.c.accardi@intel.com> |
| * |
| */ |
| #ifndef _PCI_HOTPLUG_H |
| #define _PCI_HOTPLUG_H |
| |
| /* These values come from the PCI Express Spec */ |
| enum pcie_link_width { |
| PCIE_LNK_WIDTH_RESRV = 0x00, |
| PCIE_LNK_X1 = 0x01, |
| PCIE_LNK_X2 = 0x02, |
| PCIE_LNK_X4 = 0x04, |
| PCIE_LNK_X8 = 0x08, |
| PCIE_LNK_X12 = 0x0C, |
| PCIE_LNK_X16 = 0x10, |
| PCIE_LNK_X32 = 0x20, |
| PCIE_LNK_WIDTH_UNKNOWN = 0xFF, |
| }; |
| |
| /** |
| * struct hotplug_slot_ops -the callbacks that the hotplug pci core can use |
| * @owner: The module owner of this structure |
| * @mod_name: The module name (KBUILD_MODNAME) of this structure |
| * @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. |
| * If this field is NULL, the value passed in the struct hotplug_slot_info |
| * will be used when this value is requested by a user. |
| * @get_attention_status: Called to get the current attention status of a slot. |
| * If this field is NULL, the value passed in the struct hotplug_slot_info |
| * will be used when this value is requested by a user. |
| * @get_latch_status: Called to get the current latch status of a slot. |
| * If this field is NULL, the value passed in the struct hotplug_slot_info |
| * will be used when this value is requested by a user. |
| * @get_adapter_status: Called to get see if an adapter is present in the slot or not. |
| * If this field is NULL, the value passed in the struct hotplug_slot_info |
| * will be used when this value is requested by a user. |
| * |
| * 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 { |
| struct module *owner; |
| const char *mod_name; |
| 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); |
| }; |
| |
| /** |
| * struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot |
| * @power_status: if power is enabled or not (1/0) |
| * @attention_status: if the attention light is enabled or not (1/0) |
| * @latch_status: if the latch (if any) is open or closed (1/0) |
| * @adapter_status: if there is a pci board present in the slot or not (1/0) |
| * |
| * Used to notify the hotplug pci core of the status of a specific slot. |
| */ |
| struct hotplug_slot_info { |
| u8 power_status; |
| u8 attention_status; |
| u8 latch_status; |
| u8 adapter_status; |
| }; |
| |
| /** |
| * 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 |
| * @info: pointer to the &struct hotplug_slot_info for the initial values for |
| * this slot. |
| * @release: called during pci_hp_deregister to free memory allocated in a |
| * hotplug_slot structure. |
| * @private: used by the hotplug pci controller driver to store whatever it |
| * needs. |
| */ |
| struct hotplug_slot { |
| struct hotplug_slot_ops *ops; |
| struct hotplug_slot_info *info; |
| void (*release) (struct hotplug_slot *slot); |
| void *private; |
| |
| /* Variables below this are for use only by the hotplug pci core. */ |
| struct list_head slot_list; |
| struct pci_slot *pci_slot; |
| }; |
| #define to_hotplug_slot(n) container_of(n, struct hotplug_slot, kobj) |
| |
| static inline const char *hotplug_slot_name(const struct hotplug_slot *slot) |
| { |
| return pci_slot_name(slot->pci_slot); |
| } |
| |
| extern int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, |
| int nr, const char *name, |
| struct module *owner, const char *mod_name); |
| extern int pci_hp_deregister(struct hotplug_slot *slot); |
| extern int __must_check pci_hp_change_slot_info (struct hotplug_slot *slot, |
| struct hotplug_slot_info *info); |
| |
| static inline int pci_hp_register(struct hotplug_slot *slot, |
| struct pci_bus *pbus, |
| int devnr, const char *name) |
| { |
| return __pci_hp_register(slot, pbus, devnr, name, |
| THIS_MODULE, KBUILD_MODNAME); |
| } |
| |
| /* PCI Setting Record (Type 0) */ |
| struct hpp_type0 { |
| u32 revision; |
| u8 cache_line_size; |
| u8 latency_timer; |
| u8 enable_serr; |
| u8 enable_perr; |
| }; |
| |
| /* PCI-X Setting Record (Type 1) */ |
| struct hpp_type1 { |
| u32 revision; |
| u8 max_mem_read; |
| u8 avg_max_split; |
| u16 tot_max_split; |
| }; |
| |
| /* PCI Express Setting Record (Type 2) */ |
| struct hpp_type2 { |
| u32 revision; |
| u32 unc_err_mask_and; |
| u32 unc_err_mask_or; |
| u32 unc_err_sever_and; |
| u32 unc_err_sever_or; |
| u32 cor_err_mask_and; |
| u32 cor_err_mask_or; |
| u32 adv_err_cap_and; |
| u32 adv_err_cap_or; |
| u16 pci_exp_devctl_and; |
| u16 pci_exp_devctl_or; |
| u16 pci_exp_lnkctl_and; |
| u16 pci_exp_lnkctl_or; |
| u32 sec_unc_err_sever_and; |
| u32 sec_unc_err_sever_or; |
| u32 sec_unc_err_mask_and; |
| u32 sec_unc_err_mask_or; |
| }; |
| |
| struct hotplug_params { |
| struct hpp_type0 *t0; /* Type0: NULL if not available */ |
| struct hpp_type1 *t1; /* Type1: NULL if not available */ |
| struct hpp_type2 *t2; /* Type2: NULL if not available */ |
| struct hpp_type0 type0_data; |
| struct hpp_type1 type1_data; |
| struct hpp_type2 type2_data; |
| }; |
| |
| #ifdef CONFIG_ACPI |
| #include <acpi/acpi.h> |
| #include <acpi/acpi_bus.h> |
| int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp); |
| int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags); |
| int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle); |
| int acpi_pci_detect_ejectable(acpi_handle handle); |
| #else |
| static inline int pci_get_hp_params(struct pci_dev *dev, |
| struct hotplug_params *hpp) |
| { |
| return -ENODEV; |
| } |
| #endif |
| |
| void pci_configure_slot(struct pci_dev *dev); |
| #endif |
| |