269 lines
7.8 KiB
C
269 lines
7.8 KiB
C
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/*
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* ACPI PCI Hot Plug Controller Driver
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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 (greg@kroah.com)
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* Copyright (C) 2001 IBM Corp.
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* Copyright (C) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
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* Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
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* Copyright (C) 2002,2003 NEC Corporation
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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 <gregkh@us.ibm.com>,
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* <t-kochi@bq.jp.nec.com>
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*
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*/
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#ifndef _ACPIPHP_H
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#define _ACPIPHP_H
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#include <linux/acpi.h>
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#include <linux/kobject.h> /* for KOBJ_NAME_LEN */
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#include "pci_hotplug.h"
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#define dbg(format, arg...) \
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do { \
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if (acpiphp_debug) \
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printk(KERN_DEBUG "%s: " format, \
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MY_NAME , ## arg); \
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} while (0)
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#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
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#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
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#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
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/* name size which is used for entries in pcihpfs */
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#define SLOT_NAME_SIZE KOBJ_NAME_LEN /* {_SUN} */
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struct acpiphp_bridge;
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struct acpiphp_slot;
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struct pci_resource;
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/*
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* struct slot - slot information for each *physical* slot
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*/
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struct slot {
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u8 number;
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struct hotplug_slot *hotplug_slot;
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struct list_head slot_list;
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struct acpiphp_slot *acpi_slot;
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};
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/*
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* struct pci_resource - describes pci resource (mem, pfmem, io, bus)
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*/
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struct pci_resource {
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struct pci_resource * next;
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u64 base;
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u32 length;
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};
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/**
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* struct hpp_param - ACPI 2.0 _HPP Hot Plug Parameters
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* @cache_line_size in DWORD
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* @latency_timer in PCI clock
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* @enable_SERR 0 or 1
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* @enable_PERR 0 or 1
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*/
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struct hpp_param {
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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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/**
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* struct acpiphp_bridge - PCI bridge information
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*
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* for each bridge device in ACPI namespace
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*/
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struct acpiphp_bridge {
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struct list_head list;
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acpi_handle handle;
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struct acpiphp_slot *slots;
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int type;
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int nr_slots;
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u8 seg;
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u8 bus;
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u8 sub;
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u32 flags;
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/* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
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struct pci_bus *pci_bus;
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/* PCI-to-PCI bridge device */
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struct pci_dev *pci_dev;
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/* ACPI 2.0 _HPP parameters */
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struct hpp_param hpp;
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spinlock_t res_lock;
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/* available resources on this bus */
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struct pci_resource *mem_head;
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struct pci_resource *p_mem_head;
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struct pci_resource *io_head;
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struct pci_resource *bus_head;
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};
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/**
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* struct acpiphp_slot - PCI slot information
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*
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* PCI slot information for each *physical* PCI slot
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*/
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struct acpiphp_slot {
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struct acpiphp_slot *next;
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struct acpiphp_bridge *bridge; /* parent */
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struct list_head funcs; /* one slot may have different
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objects (i.e. for each function) */
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struct semaphore crit_sect;
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u32 id; /* slot id (serial #) for hotplug core */
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u8 device; /* pci device# */
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u32 sun; /* ACPI _SUN (slot unique number) */
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u32 slotno; /* slot number relative to bridge */
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u32 flags; /* see below */
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};
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/**
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* struct acpiphp_func - PCI function information
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*
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* PCI function information for each object in ACPI namespace
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* typically 8 objects per slot (i.e. for each PCI function)
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*/
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struct acpiphp_func {
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struct acpiphp_slot *slot; /* parent */
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struct list_head sibling;
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struct pci_dev *pci_dev;
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acpi_handle handle;
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u8 function; /* pci function# */
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u32 flags; /* see below */
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/* resources used for this function */
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struct pci_resource *mem_head;
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struct pci_resource *p_mem_head;
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struct pci_resource *io_head;
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struct pci_resource *bus_head;
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};
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/**
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* struct acpiphp_attention_info - device specific attention registration
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*
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* ACPI has no generic method of setting/getting attention status
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* this allows for device specific driver registration
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*/
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struct acpiphp_attention_info
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{
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int (*set_attn)(struct hotplug_slot *slot, u8 status);
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int (*get_attn)(struct hotplug_slot *slot, u8 *status);
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struct module *owner;
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};
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/* PCI bus bridge HID */
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#define ACPI_PCI_HOST_HID "PNP0A03"
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/* PCI BRIDGE type */
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#define BRIDGE_TYPE_HOST 0
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#define BRIDGE_TYPE_P2P 1
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/* ACPI _STA method value (ignore bit 4; battery present) */
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#define ACPI_STA_PRESENT (0x00000001)
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#define ACPI_STA_ENABLED (0x00000002)
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#define ACPI_STA_SHOW_IN_UI (0x00000004)
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#define ACPI_STA_FUNCTIONING (0x00000008)
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#define ACPI_STA_ALL (0x0000000f)
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/* bridge flags */
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#define BRIDGE_HAS_STA (0x00000001)
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#define BRIDGE_HAS_EJ0 (0x00000002)
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#define BRIDGE_HAS_HPP (0x00000004)
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#define BRIDGE_HAS_PS0 (0x00000010)
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#define BRIDGE_HAS_PS1 (0x00000020)
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#define BRIDGE_HAS_PS2 (0x00000040)
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#define BRIDGE_HAS_PS3 (0x00000080)
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/* slot flags */
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#define SLOT_POWEREDON (0x00000001)
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#define SLOT_ENABLED (0x00000002)
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#define SLOT_MULTIFUNCTION (0x00000004)
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/* function flags */
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#define FUNC_HAS_STA (0x00000001)
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#define FUNC_HAS_EJ0 (0x00000002)
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#define FUNC_HAS_PS0 (0x00000010)
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#define FUNC_HAS_PS1 (0x00000020)
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#define FUNC_HAS_PS2 (0x00000040)
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#define FUNC_HAS_PS3 (0x00000080)
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/* function prototypes */
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/* acpiphp_core.c */
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extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
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extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
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/* acpiphp_glue.c */
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extern int acpiphp_glue_init (void);
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extern void acpiphp_glue_exit (void);
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extern int acpiphp_get_num_slots (void);
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extern struct acpiphp_slot *get_slot_from_id (int id);
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typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
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extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
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extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
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extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
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/* acpiphp_pci.c */
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extern struct pci_dev *acpiphp_allocate_pcidev (struct pci_bus *pbus, int dev, int fn);
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extern int acpiphp_configure_slot (struct acpiphp_slot *slot);
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extern int acpiphp_configure_function (struct acpiphp_func *func);
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extern void acpiphp_unconfigure_function (struct acpiphp_func *func);
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extern int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge);
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extern int acpiphp_init_func_resource (struct acpiphp_func *func);
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/* acpiphp_res.c */
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extern struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size);
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extern struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size);
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extern struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size);
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extern int acpiphp_resource_sort_and_combine (struct pci_resource **head);
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extern struct pci_resource *acpiphp_make_resource (u64 base, u32 length);
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extern void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to);
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extern void acpiphp_free_resource (struct pci_resource **res);
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extern void acpiphp_dump_resource (struct acpiphp_bridge *bridge); /* debug */
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extern void acpiphp_dump_func_resource (struct acpiphp_func *func); /* debug */
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/* variables */
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extern int acpiphp_debug;
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#endif /* _ACPIPHP_H */
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