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* ACPI PCI Hot Plug Controller Driver
* Copyright (C) 1995,2001 Compaq Computer Corporation
* Copyright (C) 2001 Greg Kroah-Hartman (
* Copyright (C) 2001 IBM Corp.
* Copyright (C) 2002 Hiroshi Aono (
* Copyright (C) 2002,2003 Takayoshi Kochi (
* Copyright (C) 2002,2003 NEC Corporation
* 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
* 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 <>,
* <>
#ifndef _ACPIPHP_H
#define _ACPIPHP_H
#include <linux/acpi.h>
#include <linux/kobject.h> /* for KOBJ_NAME_LEN */
#include "pci_hotplug.h"
#define dbg(format, arg...) \
do { \
if (acpiphp_debug) \
printk(KERN_DEBUG "%s: " format, \
MY_NAME , ## arg); \
} while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
/* name size which is used for entries in pcihpfs */
struct acpiphp_bridge;
struct acpiphp_slot;
struct pci_resource;
* struct slot - slot information for each *physical* slot
struct slot {
u8 number;
struct hotplug_slot *hotplug_slot;
struct list_head slot_list;
struct acpiphp_slot *acpi_slot;
* struct pci_resource - describes pci resource (mem, pfmem, io, bus)
struct pci_resource {
struct pci_resource * next;
u64 base;
u32 length;
* struct hpp_param - ACPI 2.0 _HPP Hot Plug Parameters
* @cache_line_size in DWORD
* @latency_timer in PCI clock
* @enable_SERR 0 or 1
* @enable_PERR 0 or 1
struct hpp_param {
u8 cache_line_size;
u8 latency_timer;
u8 enable_SERR;
u8 enable_PERR;
* struct acpiphp_bridge - PCI bridge information
* for each bridge device in ACPI namespace
struct acpiphp_bridge {
struct list_head list;
acpi_handle handle;
struct acpiphp_slot *slots;
int type;
int nr_slots;
u8 seg;
u8 bus;
u8 sub;
u32 flags;
/* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
struct pci_bus *pci_bus;
/* PCI-to-PCI bridge device */
struct pci_dev *pci_dev;
/* ACPI 2.0 _HPP parameters */
struct hpp_param hpp;
spinlock_t res_lock;
/* available resources on this bus */
struct pci_resource *mem_head;
struct pci_resource *p_mem_head;
struct pci_resource *io_head;
struct pci_resource *bus_head;
* struct acpiphp_slot - PCI slot information
* PCI slot information for each *physical* PCI slot
struct acpiphp_slot {
struct acpiphp_slot *next;
struct acpiphp_bridge *bridge; /* parent */
struct list_head funcs; /* one slot may have different
objects (i.e. for each function) */
struct semaphore crit_sect;
u32 id; /* slot id (serial #) for hotplug core */
u8 device; /* pci device# */
u32 sun; /* ACPI _SUN (slot unique number) */
u32 slotno; /* slot number relative to bridge */
u32 flags; /* see below */
* struct acpiphp_func - PCI function information
* PCI function information for each object in ACPI namespace
* typically 8 objects per slot (i.e. for each PCI function)
struct acpiphp_func {
struct acpiphp_slot *slot; /* parent */
struct list_head sibling;
struct pci_dev *pci_dev;
acpi_handle handle;
u8 function; /* pci function# */
u32 flags; /* see below */
/* resources used for this function */
struct pci_resource *mem_head;
struct pci_resource *p_mem_head;
struct pci_resource *io_head;
struct pci_resource *bus_head;
* struct acpiphp_attention_info - device specific attention registration
* ACPI has no generic method of setting/getting attention status
* this allows for device specific driver registration
struct acpiphp_attention_info
int (*set_attn)(struct hotplug_slot *slot, u8 status);
int (*get_attn)(struct hotplug_slot *slot, u8 *status);
struct module *owner;
/* PCI bus bridge HID */
/* PCI BRIDGE type */
#define BRIDGE_TYPE_P2P 1
/* ACPI _STA method value (ignore bit 4; battery present) */
#define ACPI_STA_PRESENT (0x00000001)
#define ACPI_STA_ENABLED (0x00000002)
#define ACPI_STA_SHOW_IN_UI (0x00000004)
#define ACPI_STA_FUNCTIONING (0x00000008)
#define ACPI_STA_ALL (0x0000000f)
/* bridge flags */
#define BRIDGE_HAS_STA (0x00000001)
#define BRIDGE_HAS_EJ0 (0x00000002)
#define BRIDGE_HAS_HPP (0x00000004)
#define BRIDGE_HAS_PS0 (0x00000010)
#define BRIDGE_HAS_PS1 (0x00000020)
#define BRIDGE_HAS_PS2 (0x00000040)
#define BRIDGE_HAS_PS3 (0x00000080)
/* slot flags */
#define SLOT_POWEREDON (0x00000001)
#define SLOT_ENABLED (0x00000002)
#define SLOT_MULTIFUNCTION (0x00000004)
/* function flags */
#define FUNC_HAS_STA (0x00000001)
#define FUNC_HAS_EJ0 (0x00000002)
#define FUNC_HAS_PS0 (0x00000010)
#define FUNC_HAS_PS1 (0x00000020)
#define FUNC_HAS_PS2 (0x00000040)
#define FUNC_HAS_PS3 (0x00000080)
/* function prototypes */
/* acpiphp_core.c */
extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
/* acpiphp_glue.c */
extern int acpiphp_glue_init (void);
extern void acpiphp_glue_exit (void);
extern int acpiphp_get_num_slots (void);
extern struct acpiphp_slot *get_slot_from_id (int id);
typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
/* acpiphp_pci.c */
extern struct pci_dev *acpiphp_allocate_pcidev (struct pci_bus *pbus, int dev, int fn);
extern int acpiphp_configure_slot (struct acpiphp_slot *slot);
extern int acpiphp_configure_function (struct acpiphp_func *func);
extern void acpiphp_unconfigure_function (struct acpiphp_func *func);
extern int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge);
extern int acpiphp_init_func_resource (struct acpiphp_func *func);
/* acpiphp_res.c */
extern struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size);
extern struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size);
extern struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size);
extern int acpiphp_resource_sort_and_combine (struct pci_resource **head);
extern struct pci_resource *acpiphp_make_resource (u64 base, u32 length);
extern void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to);
extern void acpiphp_free_resource (struct pci_resource **res);
extern void acpiphp_dump_resource (struct acpiphp_bridge *bridge); /* debug */
extern void acpiphp_dump_func_resource (struct acpiphp_func *func); /* debug */
/* variables */
extern int acpiphp_debug;
#endif /* _ACPIPHP_H */