237 lines
8.3 KiB
C
237 lines
8.3 KiB
C
/*
|
|
* 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 Hotplug Spec */
|
|
enum pci_bus_speed {
|
|
PCI_SPEED_33MHz = 0x00,
|
|
PCI_SPEED_66MHz = 0x01,
|
|
PCI_SPEED_66MHz_PCIX = 0x02,
|
|
PCI_SPEED_100MHz_PCIX = 0x03,
|
|
PCI_SPEED_133MHz_PCIX = 0x04,
|
|
PCI_SPEED_66MHz_PCIX_ECC = 0x05,
|
|
PCI_SPEED_100MHz_PCIX_ECC = 0x06,
|
|
PCI_SPEED_133MHz_PCIX_ECC = 0x07,
|
|
PCI_SPEED_66MHz_PCIX_266 = 0x09,
|
|
PCI_SPEED_100MHz_PCIX_266 = 0x0a,
|
|
PCI_SPEED_133MHz_PCIX_266 = 0x0b,
|
|
PCI_SPEED_66MHz_PCIX_533 = 0x11,
|
|
PCI_SPEED_100MHz_PCIX_533 = 0x12,
|
|
PCI_SPEED_133MHz_PCIX_533 = 0x13,
|
|
PCI_SPEED_UNKNOWN = 0xff,
|
|
};
|
|
|
|
/* 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,
|
|
};
|
|
|
|
enum pcie_link_speed {
|
|
PCIE_2PT5GB = 0x14,
|
|
PCIE_LNK_SPEED_UNKNOWN = 0xFF,
|
|
};
|
|
|
|
struct hotplug_slot;
|
|
struct hotplug_slot_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct hotplug_slot *, char *);
|
|
ssize_t (*store)(struct hotplug_slot *, const char *, size_t);
|
|
};
|
|
#define to_hotplug_attr(n) container_of(n, struct hotplug_slot_attribute, attr);
|
|
|
|
/**
|
|
* struct hotplug_slot_ops -the callbacks that the hotplug pci core can use
|
|
* @owner: The module owner 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.
|
|
* @get_address: Called to get pci address 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_max_bus_speed: Called to get the max bus speed for 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_cur_bus_speed: Called to get the current bus speed for 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.
|
|
*
|
|
* 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;
|
|
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 (*get_address) (struct hotplug_slot *slot, u32 *value);
|
|
int (*get_max_bus_speed) (struct hotplug_slot *slot, enum pci_bus_speed *value);
|
|
int (*get_cur_bus_speed) (struct hotplug_slot *slot, enum pci_bus_speed *value);
|
|
};
|
|
|
|
/**
|
|
* struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot
|
|
* @power: 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_present: if there is a pci board present in the slot or not (1/0)
|
|
* @address: (domain << 16 | bus << 8 | dev)
|
|
*
|
|
* 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;
|
|
u32 address;
|
|
enum pci_bus_speed max_bus_speed;
|
|
enum pci_bus_speed cur_bus_speed;
|
|
};
|
|
|
|
/**
|
|
* struct hotplug_slot - used to register a physical slot with the hotplug pci core
|
|
* @name: the name of the slot being registered. This string must
|
|
* be unique amoung slots registered on this system.
|
|
* @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 {
|
|
char *name;
|
|
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 kobject kobj;
|
|
};
|
|
#define to_hotplug_slot(n) container_of(n, struct hotplug_slot, kobj)
|
|
|
|
extern int pci_hp_register (struct hotplug_slot *slot);
|
|
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);
|
|
extern struct kset pci_hotplug_slots_subsys;
|
|
|
|
/* 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>
|
|
#include <acpi/actypes.h>
|
|
extern acpi_status acpi_run_oshp(acpi_handle handle);
|
|
extern acpi_status acpi_get_hp_params_from_firmware(struct pci_bus *bus,
|
|
struct hotplug_params *hpp);
|
|
int acpi_root_bridge(acpi_handle handle);
|
|
#endif
|
|
#endif
|
|
|