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
10 * Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
11 * Copyright (C) 2003-2005 Hewlett Packard
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>
40 #include <linux/mutex.h>
41 #include <linux/pci_hotplug.h>
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 struct acpiphp_bridge;
54 struct acpiphp_slot;
55
56 /*
57 * struct slot - slot information for each *physical* slot
58 */
59 struct slot {
60 struct hotplug_slot *hotplug_slot;
61 struct acpiphp_slot *acpi_slot;
62 struct hotplug_slot_info info;
63 };
64
65 static inline const char *slot_name(struct slot *slot)
66 {
67 return hotplug_slot_name(slot->hotplug_slot);
68 }
69
70 /*
71 * struct acpiphp_bridge - PCI bridge information
72 *
73 * for each bridge device in ACPI namespace
74 */
75 struct acpiphp_bridge {
76 struct list_head list;
77 acpi_handle handle;
78 struct acpiphp_slot *slots;
79
80 /* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
81 struct acpiphp_func *func;
82
83 int type;
84 int nr_slots;
85
86 u32 flags;
87
88 /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
89 struct pci_bus *pci_bus;
90
91 /* PCI-to-PCI bridge device */
92 struct pci_dev *pci_dev;
93
94 /* ACPI 2.0 _HPP parameters */
95 struct hotplug_params hpp;
96
97 spinlock_t res_lock;
98 };
99
100
101 /*
102 * struct acpiphp_slot - PCI slot information
103 *
104 * PCI slot information for each *physical* PCI slot
105 */
106 struct acpiphp_slot {
107 struct acpiphp_slot *next;
108 struct acpiphp_bridge *bridge; /* parent */
109 struct list_head funcs; /* one slot may have different
110 objects (i.e. for each function) */
111 struct slot *slot;
112 struct mutex crit_sect;
113
114 u8 device; /* pci device# */
115
116 unsigned long long sun; /* ACPI _SUN (slot unique number) */
117 u32 flags; /* see below */
118 };
119
120
121 /*
122 * struct acpiphp_func - PCI function information
123 *
124 * PCI function information for each object in ACPI namespace
125 * typically 8 objects per slot (i.e. for each PCI function)
126 */
127 struct acpiphp_func {
128 struct acpiphp_slot *slot; /* parent */
129 struct acpiphp_bridge *bridge; /* Ejectable PCI-to-PCI bridge */
130
131 struct list_head sibling;
132 struct notifier_block nb;
133 acpi_handle handle;
134
135 u8 function; /* pci function# */
136 u32 flags; /* see below */
137 };
138
139 /*
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 */
145 struct 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
152 struct acpiphp_ioapic {
153 struct pci_dev *dev;
154 u32 gsi_base;
155 struct list_head list;
156 };
157
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)
195 #define FUNC_HAS_DCK (0x00000100)
196
197 /* function prototypes */
198
199 /* acpiphp_core.c */
200 extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
201 extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
202 extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
203 extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
204
205 /* acpiphp_glue.c */
206 extern int acpiphp_glue_init (void);
207 extern void acpiphp_glue_exit (void);
208 extern int acpiphp_get_num_slots (void);
209 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
210
211 extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
212 extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
213 extern int acpiphp_eject_slot (struct acpiphp_slot *slot);
214 extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
215 extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
216 extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
217 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
218
219 /* variables */
220 extern int acpiphp_debug;
221
222 #endif /* _ACPIPHP_H */
223
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