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/mutex.h> 40 #include <linux/pci_hotplug.h> 41 42 #define dbg(format, arg...) \ 43 do { \ 44 if (acpiphp_debug) \ 45 printk(KERN_DEBUG "%s: " format, \ 46 MY_NAME , ## arg); \ 47 } while (0) 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) 51 52 struct acpiphp_bridge; 53 struct acpiphp_slot; 54 55 /* 56 * struct slot - slot information for each *physical* slot 57 */ 58 struct slot { 59 struct hotplug_slot *hotplug_slot; 60 struct acpiphp_slot *acpi_slot; 61 struct hotplug_slot_info info; 62 }; 63 64 static inline const char *slot_name(struct slot *slot) 65 { 66 return hotplug_slot_name(slot->hotplug_slot); 67 } 68 69 /* 70 * struct acpiphp_bridge - PCI bridge information 71 * 72 * for each bridge device in ACPI namespace 73 */ 74 struct acpiphp_bridge { 75 struct list_head list; 76 acpi_handle handle; 77 struct acpiphp_slot *slots; 78 79 /* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */ 80 struct acpiphp_func *func; 81 82 int type; 83 int nr_slots; 84 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 94 95 /* 96 * struct acpiphp_slot - PCI slot information 97 * 98 * PCI slot information for each *physical* PCI slot 99 */ 100 struct acpiphp_slot { 101 struct acpiphp_slot *next; 102 struct acpiphp_bridge *bridge; /* parent */ 103 struct list_head funcs; /* one slot may have different 104 objects (i.e. for each function) */ 105 struct slot *slot; 106 struct mutex crit_sect; 107 108 u8 device; /* pci device# */ 109 110 unsigned long long sun; /* ACPI _SUN (slot unique number) */ 111 u32 flags; /* see below */ 112 }; 113 114 115 /* 116 * struct acpiphp_func - PCI function information 117 * 118 * PCI function information for each object in ACPI namespace 119 * typically 8 objects per slot (i.e. for each PCI function) 120 */ 121 struct acpiphp_func { 122 struct acpiphp_slot *slot; /* parent */ 123 struct acpiphp_bridge *bridge; /* Ejectable PCI-to-PCI bridge */ 124 125 struct list_head sibling; 126 struct notifier_block nb; 127 acpi_handle handle; 128 129 u8 function; /* pci function# */ 130 u32 flags; /* see below */ 131 }; 132 133 /* 134 * struct acpiphp_attention_info - device specific attention registration 135 * 136 * ACPI has no generic method of setting/getting attention status 137 * this allows for device specific driver registration 138 */ 139 struct acpiphp_attention_info 140 { 141 int (*set_attn)(struct hotplug_slot *slot, u8 status); 142 int (*get_attn)(struct hotplug_slot *slot, u8 *status); 143 struct module *owner; 144 }; 145 146 /* PCI bus bridge HID */ 147 #define ACPI_PCI_HOST_HID "PNP0A03" 148 149 /* PCI BRIDGE type */ 150 #define BRIDGE_TYPE_HOST 0 151 #define BRIDGE_TYPE_P2P 1 152 153 /* ACPI _STA method value (ignore bit 4; battery present) */ 154 #define ACPI_STA_PRESENT (0x00000001) 155 #define ACPI_STA_ENABLED (0x00000002) 156 #define ACPI_STA_SHOW_IN_UI (0x00000004) 157 #define ACPI_STA_FUNCTIONING (0x00000008) 158 #define ACPI_STA_ALL (0x0000000f) 159 160 /* bridge flags */ 161 #define BRIDGE_HAS_STA (0x00000001) 162 #define BRIDGE_HAS_EJ0 (0x00000002) 163 #define BRIDGE_HAS_HPP (0x00000004) 164 #define BRIDGE_HAS_PS0 (0x00000010) 165 #define BRIDGE_HAS_PS1 (0x00000020) 166 #define BRIDGE_HAS_PS2 (0x00000040) 167 #define BRIDGE_HAS_PS3 (0x00000080) 168 169 /* slot flags */ 170 171 #define SLOT_POWEREDON (0x00000001) 172 #define SLOT_ENABLED (0x00000002) 173 #define SLOT_MULTIFUNCTION (0x00000004) 174 175 /* function flags */ 176 177 #define FUNC_HAS_STA (0x00000001) 178 #define FUNC_HAS_EJ0 (0x00000002) 179 #define FUNC_HAS_PS0 (0x00000010) 180 #define FUNC_HAS_PS1 (0x00000020) 181 #define FUNC_HAS_PS2 (0x00000040) 182 #define FUNC_HAS_PS3 (0x00000080) 183 #define FUNC_HAS_DCK (0x00000100) 184 185 /* function prototypes */ 186 187 /* acpiphp_core.c */ 188 extern int acpiphp_register_attention(struct acpiphp_attention_info*info); 189 extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info); 190 extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot); 191 extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot); 192 193 /* acpiphp_glue.c */ 194 extern int acpiphp_glue_init (void); 195 extern void acpiphp_glue_exit (void); 196 extern int acpiphp_get_num_slots (void); 197 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data); 198 199 extern int acpiphp_enable_slot (struct acpiphp_slot *slot); 200 extern int acpiphp_disable_slot (struct acpiphp_slot *slot); 201 extern int acpiphp_eject_slot (struct acpiphp_slot *slot); 202 extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot); 203 extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot); 204 extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot); 205 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot); 206 207 /* variables */ 208 extern bool acpiphp_debug; 209 210 #endif /* _ACPIPHP_H */ 211