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/kobject.h> /* for KOBJ_NAME_LEN */
40 #include <linux/mutex.h>
41 #include "pci_hotplug.h"
43 #define dbg(format, arg...) \
46 printk(KERN_DEBUG "%s: " format, \
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)
53 /* name size which is used for entries in pcihpfs */
54 #define SLOT_NAME_SIZE KOBJ_NAME_LEN /* {_SUN} */
56 struct acpiphp_bridge;
60 * struct slot - slot information for each *physical* slot
63 struct hotplug_slot *hotplug_slot;
64 struct acpiphp_slot *acpi_slot;
70 * struct acpiphp_bridge - PCI bridge information
72 * for each bridge device in ACPI namespace
74 struct acpiphp_bridge {
75 struct list_head list;
77 struct acpiphp_slot *slots;
83 /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
84 struct pci_bus *pci_bus;
86 /* PCI-to-PCI bridge device */
87 struct pci_dev *pci_dev;
89 /* ACPI 2.0 _HPP parameters */
90 struct hotplug_params hpp;
97 * struct acpiphp_slot - PCI slot information
99 * PCI slot information for each *physical* PCI slot
101 struct acpiphp_slot {
102 struct acpiphp_slot *next;
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# */
111 u32 sun; /* ACPI _SUN (slot unique number) */
112 u32 slotno; /* slot number relative to bridge */
113 u32 flags; /* see below */
118 * struct acpiphp_func - PCI function information
120 * PCI function information for each object in ACPI namespace
121 * typically 8 objects per slot (i.e. for each PCI function)
123 struct acpiphp_func {
124 struct acpiphp_slot *slot; /* parent */
126 struct list_head sibling;
127 struct pci_dev *pci_dev;
131 u8 function; /* pci function# */
132 u32 flags; /* see below */
136 * struct acpiphp_attention_info - device specific attention registration
138 * ACPI has no generic method of setting/getting attention status
139 * this allows for device specific driver registration
141 struct acpiphp_attention_info
143 int (*set_attn)(struct hotplug_slot *slot, u8 status);
144 int (*get_attn)(struct hotplug_slot *slot, u8 *status);
145 struct module *owner;
149 struct dependent_device {
150 struct list_head device_list;
151 struct list_head pci_list;
153 struct acpiphp_func *func;
157 struct acpiphp_dock_station {
161 struct acpiphp_func *dock_bridge;
162 struct list_head dependent_devices;
163 struct list_head pci_dependent_devices;
167 /* PCI bus bridge HID */
168 #define ACPI_PCI_HOST_HID "PNP0A03"
170 /* PCI BRIDGE type */
171 #define BRIDGE_TYPE_HOST 0
172 #define BRIDGE_TYPE_P2P 1
174 /* ACPI _STA method value (ignore bit 4; battery present) */
175 #define ACPI_STA_PRESENT (0x00000001)
176 #define ACPI_STA_ENABLED (0x00000002)
177 #define ACPI_STA_SHOW_IN_UI (0x00000004)
178 #define ACPI_STA_FUNCTIONING (0x00000008)
179 #define ACPI_STA_ALL (0x0000000f)
182 #define BRIDGE_HAS_STA (0x00000001)
183 #define BRIDGE_HAS_EJ0 (0x00000002)
184 #define BRIDGE_HAS_HPP (0x00000004)
185 #define BRIDGE_HAS_PS0 (0x00000010)
186 #define BRIDGE_HAS_PS1 (0x00000020)
187 #define BRIDGE_HAS_PS2 (0x00000040)
188 #define BRIDGE_HAS_PS3 (0x00000080)
192 #define SLOT_POWEREDON (0x00000001)
193 #define SLOT_ENABLED (0x00000002)
194 #define SLOT_MULTIFUNCTION (0x00000004)
198 #define FUNC_HAS_STA (0x00000001)
199 #define FUNC_HAS_EJ0 (0x00000002)
200 #define FUNC_HAS_PS0 (0x00000010)
201 #define FUNC_HAS_PS1 (0x00000020)
202 #define FUNC_HAS_PS2 (0x00000040)
203 #define FUNC_HAS_PS3 (0x00000080)
204 #define FUNC_HAS_DCK (0x00000100)
205 #define FUNC_IS_DD (0x00000200)
207 /* dock station flags */
208 #define DOCK_DOCKING (0x00000001)
209 #define DOCK_HAS_BRIDGE (0x00000002)
211 /* function prototypes */
214 extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
215 extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
216 extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
217 extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
220 extern int acpiphp_glue_init (void);
221 extern void acpiphp_glue_exit (void);
222 extern int acpiphp_get_num_slots (void);
223 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
224 void handle_hotplug_event_func(acpi_handle, u32, void*);
226 extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
227 extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
228 extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
229 extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
230 extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
231 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
232 extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
235 extern int find_dock_station(void);
236 extern void remove_dock_station(void);
237 extern void add_dependent_device(struct dependent_device *new_dd);
238 extern void add_pci_dependent_device(struct dependent_device *new_dd);
239 extern struct dependent_device *get_dependent_device(acpi_handle handle);
240 extern int is_dependent_device(acpi_handle handle);
241 extern int detect_dependent_devices(acpi_handle *bridge_handle);
242 extern struct dependent_device *alloc_dependent_device(acpi_handle handle);
245 extern int acpiphp_debug;
247 #endif /* _ACPIPHP_H */