2 * ACPI PCI Hot Plug Controller Driver
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
13 * All rights reserved.
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.
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
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.
30 * Send feedback to <gregkh@us.ibm.com>,
31 * <t-kochi@bq.jp.nec.com>
38 #include <linux/acpi.h>
39 #include <linux/mutex.h>
40 #include <linux/pci_hotplug.h>
42 #define dbg(format, arg...) \
45 printk(KERN_DEBUG "%s: " format, \
48 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
49 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
50 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
52 struct acpiphp_context;
53 struct acpiphp_bridge;
57 * struct slot - slot information for each *physical* slot
60 struct hotplug_slot *hotplug_slot;
61 struct acpiphp_slot *acpi_slot;
62 struct hotplug_slot_info info;
63 unsigned int sun; /* ACPI _SUN (Slot User Number) value */
66 static inline const char *slot_name(struct slot *slot)
68 return hotplug_slot_name(slot->hotplug_slot);
72 * struct acpiphp_bridge - PCI bridge information
74 * for each bridge device in ACPI namespace
76 struct acpiphp_bridge {
77 struct list_head list;
78 struct list_head slots;
82 struct acpiphp_context *context;
88 /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
89 struct pci_bus *pci_bus;
91 /* PCI-to-PCI bridge device */
92 struct pci_dev *pci_dev;
97 * struct acpiphp_slot - PCI slot information
99 * PCI slot information for each *physical* PCI slot
101 struct acpiphp_slot {
102 struct list_head node;
103 struct acpiphp_bridge *bridge; /* parent */
104 struct list_head funcs; /* one slot may have different
105 objects (i.e. for each function) */
107 struct mutex crit_sect;
109 u8 device; /* pci device# */
110 u32 flags; /* see below */
115 * struct acpiphp_func - PCI function information
117 * PCI function information for each object in ACPI namespace
118 * typically 8 objects per slot (i.e. for each PCI function)
120 struct acpiphp_func {
121 struct acpiphp_context *context;
122 struct acpiphp_slot *slot; /* parent */
124 struct list_head sibling;
127 u8 function; /* pci function# */
128 u32 flags; /* see below */
131 struct acpiphp_context {
133 struct acpiphp_func *func;
134 struct acpiphp_bridge *bridge;
135 unsigned int refcount;
139 * struct acpiphp_attention_info - device specific attention registration
141 * ACPI has no generic method of setting/getting attention status
142 * this allows for device specific driver registration
144 struct acpiphp_attention_info
146 int (*set_attn)(struct hotplug_slot *slot, u8 status);
147 int (*get_attn)(struct hotplug_slot *slot, u8 *status);
148 struct module *owner;
151 /* PCI bus bridge HID */
152 #define ACPI_PCI_HOST_HID "PNP0A03"
154 /* ACPI _STA method value (ignore bit 4; battery present) */
155 #define ACPI_STA_ALL (0x0000000f)
158 #define BRIDGE_HAS_EJ0 (0x00000001)
162 #define SLOT_POWEREDON (0x00000001)
163 #define SLOT_ENABLED (0x00000002)
164 #define SLOT_MULTIFUNCTION (0x00000004)
168 #define FUNC_HAS_STA (0x00000001)
169 #define FUNC_HAS_EJ0 (0x00000002)
170 #define FUNC_HAS_PS0 (0x00000010)
171 #define FUNC_HAS_PS1 (0x00000020)
172 #define FUNC_HAS_PS2 (0x00000040)
173 #define FUNC_HAS_PS3 (0x00000080)
174 #define FUNC_HAS_DCK (0x00000100)
176 /* function prototypes */
179 int acpiphp_register_attention(struct acpiphp_attention_info*info);
180 int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
181 int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot, unsigned int sun);
182 void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
185 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
187 int acpiphp_enable_slot(struct acpiphp_slot *slot);
188 int acpiphp_disable_slot(struct acpiphp_slot *slot);
189 int acpiphp_eject_slot(struct acpiphp_slot *slot);
190 u8 acpiphp_get_power_status(struct acpiphp_slot *slot);
191 u8 acpiphp_get_attention_status(struct acpiphp_slot *slot);
192 u8 acpiphp_get_latch_status(struct acpiphp_slot *slot);
193 u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot);
196 extern bool acpiphp_debug;
197 extern bool acpiphp_disabled;
199 #endif /* _ACPIPHP_H */