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PCI: introduce pci_slot
[deliverable/linux.git] / drivers / pci / hotplug / acpiphp.h
CommitLineData
1da177e4
LT		 1/*
2 * ACPI PCI Hot Plug Controller Driver
3 *
4 * Copyright (C) 1995,2001 Compaq Computer Corporation
5 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
6 * Copyright (C) 2001 IBM Corp.
7 * Copyright (C) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
8 * Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
9 * Copyright (C) 2002,2003 NEC Corporation
42f49a6a
RS		 10 * Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
11 * Copyright (C) 2003-2005 Hewlett Packard
1da177e4
LT		 12 *
13 * All rights reserved.
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or (at
18 * your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful, but
21 * WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
23 * NON INFRINGEMENT. See the GNU General Public License for more
24 * details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 *
30 * Send feedback to <gregkh@us.ibm.com>,
31 * <t-kochi@bq.jp.nec.com>
32 *
33 */
34
35#ifndef _ACPIPHP_H
36#define _ACPIPHP_H
37
38#include <linux/acpi.h>
39#include <linux/kobject.h> /* for KOBJ_NAME_LEN */
6aa4cdd0 40#include <linux/mutex.h>
7a54f25c 41#include <linux/pci_hotplug.h>
1da177e4
LT		 42
43#define dbg(format, arg...) \
44 do { \
45 if (acpiphp_debug) \
46 printk(KERN_DEBUG "%s: " format, \
47 MY_NAME , ## arg); \
48 } while (0)
49#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
50#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
51#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
52
53/* name size which is used for entries in pcihpfs */
54#define SLOT_NAME_SIZE KOBJ_NAME_LEN /* {_SUN} */
55
56struct acpiphp_bridge;
57struct acpiphp_slot;
1da177e4
LT		 58
59/*
60 * struct slot - slot information for each *physical* slot
61 */
62struct slot {
1da177e4 63 struct hotplug_slot *hotplug_slot;
1da177e4 64 struct acpiphp_slot *acpi_slot;
ac9e9891
REB		 65 struct hotplug_slot_info info;
66 char name[SLOT_NAME_SIZE];
1da177e4
LT		 67};
68
26e6c66e 69/*
1da177e4
LT		 70 * struct acpiphp_bridge - PCI bridge information
71 *
72 * for each bridge device in ACPI namespace
73 */
74struct acpiphp_bridge {
75 struct list_head list;
76 acpi_handle handle;
77 struct acpiphp_slot *slots;
551bcb75
MT		 78
79 /* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
80 struct acpiphp_func *func;
81
1da177e4
LT		 82 int type;
83 int nr_slots;
84
1da177e4
LT		 85 u32 flags;
86
87 /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
88 struct pci_bus *pci_bus;
89
90 /* PCI-to-PCI bridge device */
91 struct pci_dev *pci_dev;
92
93 /* ACPI 2.0 _HPP parameters */
783c49fc 94 struct hotplug_params hpp;
1da177e4
LT		 95
96 spinlock_t res_lock;
1da177e4
LT		 97};
98
99
26e6c66e 100/*
1da177e4
LT		 101 * struct acpiphp_slot - PCI slot information
102 *
103 * PCI slot information for each *physical* PCI slot
104 */
105struct acpiphp_slot {
106 struct acpiphp_slot *next;
107 struct acpiphp_bridge *bridge; /* parent */
108 struct list_head funcs; /* one slot may have different
109 objects (i.e. for each function) */
e27da381 110 struct slot *slot;
6aa4cdd0 111 struct mutex crit_sect;
1da177e4 112
1da177e4
LT		 113 u8 device; /* pci device# */
114
115 u32 sun; /* ACPI _SUN (slot unique number) */
1da177e4
LT		 116 u32 flags; /* see below */
117};
118
119
26e6c66e 120/*
1da177e4
LT		 121 * struct acpiphp_func - PCI function information
122 *
123 * PCI function information for each object in ACPI namespace
124 * typically 8 objects per slot (i.e. for each PCI function)
125 */
126struct acpiphp_func {
127 struct acpiphp_slot *slot; /* parent */
551bcb75 128 struct acpiphp_bridge *bridge; /* Ejectable PCI-to-PCI bridge */
1da177e4
LT		 129
130 struct list_head sibling;
131 struct pci_dev *pci_dev;
4e8662bb 132 struct notifier_block nb;
1da177e4
LT		 133 acpi_handle handle;
134
135 u8 function; /* pci function# */
136 u32 flags; /* see below */
1da177e4
LT		 137};
138
26e6c66e 139/*
1da177e4
LT		 140 * struct acpiphp_attention_info - device specific attention registration
141 *
142 * ACPI has no generic method of setting/getting attention status
143 * this allows for device specific driver registration
144 */
145struct acpiphp_attention_info
146{
147 int (*set_attn)(struct hotplug_slot *slot, u8 status);
148 int (*get_attn)(struct hotplug_slot *slot, u8 *status);
149 struct module *owner;
150};
151
600812ec
ST		 152struct acpiphp_ioapic {
153 struct pci_dev *dev;
154 u32 gsi_base;
155 struct list_head list;
156};
20416ea5 157
1da177e4
LT		 158/* PCI bus bridge HID */
159#define ACPI_PCI_HOST_HID "PNP0A03"
160
161/* PCI BRIDGE type */
162#define BRIDGE_TYPE_HOST 0
163#define BRIDGE_TYPE_P2P 1
164
165/* ACPI _STA method value (ignore bit 4; battery present) */
166#define ACPI_STA_PRESENT (0x00000001)
167#define ACPI_STA_ENABLED (0x00000002)
168#define ACPI_STA_SHOW_IN_UI (0x00000004)
169#define ACPI_STA_FUNCTIONING (0x00000008)
170#define ACPI_STA_ALL (0x0000000f)
171
172/* bridge flags */
173#define BRIDGE_HAS_STA (0x00000001)
174#define BRIDGE_HAS_EJ0 (0x00000002)
175#define BRIDGE_HAS_HPP (0x00000004)
176#define BRIDGE_HAS_PS0 (0x00000010)
177#define BRIDGE_HAS_PS1 (0x00000020)
178#define BRIDGE_HAS_PS2 (0x00000040)
179#define BRIDGE_HAS_PS3 (0x00000080)
180
181/* slot flags */
182
183#define SLOT_POWEREDON (0x00000001)
184#define SLOT_ENABLED (0x00000002)
185#define SLOT_MULTIFUNCTION (0x00000004)
186
187/* function flags */
188
189#define FUNC_HAS_STA (0x00000001)
190#define FUNC_HAS_EJ0 (0x00000002)
191#define FUNC_HAS_PS0 (0x00000010)
192#define FUNC_HAS_PS1 (0x00000020)
193#define FUNC_HAS_PS2 (0x00000040)
194#define FUNC_HAS_PS3 (0x00000080)
20416ea5 195#define FUNC_HAS_DCK (0x00000100)
1da177e4
LT		 196
197/* function prototypes */
198
199/* acpiphp_core.c */
200extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
201extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
e27da381
MT		 202extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
203extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
1da177e4
LT		 204
205/* acpiphp_glue.c */
206extern int acpiphp_glue_init (void);
207extern void acpiphp_glue_exit (void);
208extern int acpiphp_get_num_slots (void);
1da177e4
LT		 209typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
210
211extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
212extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
bfceafc5 213extern int acpiphp_eject_slot (struct acpiphp_slot *slot);
1da177e4
LT		 214extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
215extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
216extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
217extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
1da177e4 218
1da177e4
LT		 219/* variables */
220extern int acpiphp_debug;
221
222#endif /* _ACPIPHP_H */
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