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 * 11 * All rights reserved. 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or (at 16 * your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, but 19 * WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 21 * NON INFRINGEMENT. See the GNU General Public License for more 22 * details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 * 28 * Send feedback to <gregkh@us.ibm.com>, 29 * <t-kochi@bq.jp.nec.com> 30 * 31 */ 32 33 #ifndef _ACPIPHP_H 34 #define _ACPIPHP_H 35 36 #include <linux/acpi.h> 37 #include "pci_hotplug.h" 38 39 #include <acpi/acpi_bus.h> 40 41 #define dbg(format, arg...) \ 42 do { \ 43 if (acpiphp_debug) \ 44 printk(KERN_DEBUG "%s: " format, \ 45 MY_NAME , ## arg); \ 46 } while (0) 47 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg) 48 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg) 49 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg) 50 51 #define SLOT_MAGIC 0x67267322 52 /* name size which is used for entries in pcihpfs */ 53 #define SLOT_NAME_SIZE 16 /* {_SUN} */ 54 55 struct acpiphp_bridge; 56 struct acpiphp_slot; 57 struct pci_resource; 58 59 /* 60 * struct slot - slot information for each *physical* slot 61 */ 62 struct slot { 63 u32 magic; 64 u8 number; 65 struct hotplug_slot *hotplug_slot; 66 struct list_head slot_list; 67 68 struct acpiphp_slot *acpi_slot; 69 }; 70 71 /* 72 * struct pci_resource - describes pci resource (mem, pfmem, io, bus) 73 */ 74 struct pci_resource { 75 struct pci_resource * next; 76 u64 base; 77 u32 length; 78 }; 79 80 /** 81 * struct hpp_param - ACPI 2.0 _HPP Hot Plug Parameters 82 * @cache_line_size in DWORD 83 * @latency_timer in PCI clock 84 * @enable_SERR 0 or 1 85 * @enable_PERR 0 or 1 86 */ 87 struct hpp_param { 88 u8 cache_line_size; 89 u8 latency_timer; 90 u8 enable_SERR; 91 u8 enable_PERR; 92 }; 93 94 95 /** 96 * struct acpiphp_bridge - PCI bridge information 97 * 98 * for each bridge device in ACPI namespace 99 */ 100 struct acpiphp_bridge { 101 struct list_head list; 102 acpi_handle handle; 103 struct acpiphp_slot *slots; 104 int type; 105 int nr_slots; 106 107 u8 seg; 108 u8 bus; 109 u8 sub; 110 111 u32 flags; 112 113 /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */ 114 struct pci_bus *pci_bus; 115 116 /* PCI-to-PCI bridge device */ 117 struct pci_dev *pci_dev; 118 119 /* ACPI 2.0 _HPP parameters */ 120 struct hpp_param hpp; 121 122 spinlock_t res_lock; 123 124 /* available resources on this bus */ 125 struct pci_resource *mem_head; 126 struct pci_resource *p_mem_head; 127 struct pci_resource *io_head; 128 struct pci_resource *bus_head; 129 }; 130 131 132 /** 133 * struct acpiphp_slot - PCI slot information 134 * 135 * PCI slot information for each *physical* PCI slot 136 */ 137 struct acpiphp_slot { 138 struct acpiphp_slot *next; 139 struct acpiphp_bridge *bridge; /* parent */ 140 struct list_head funcs; /* one slot may have different 141 objects (i.e. for each function) */ 142 struct semaphore crit_sect; 143 144 u32 id; /* slot id (serial #) for hotplug core */ 145 u8 device; /* pci device# */ 146 147 u32 sun; /* ACPI _SUN (slot unique number) */ 148 u32 slotno; /* slot number relative to bridge */ 149 u32 flags; /* see below */ 150 }; 151 152 153 /** 154 * struct acpiphp_func - PCI function information 155 * 156 * PCI function information for each object in ACPI namespace 157 * typically 8 objects per slot (i.e. for each PCI function) 158 */ 159 struct acpiphp_func { 160 struct acpiphp_slot *slot; /* parent */ 161 162 struct list_head sibling; 163 struct pci_dev *pci_dev; 164 165 acpi_handle handle; 166 167 u8 function; /* pci function# */ 168 u32 flags; /* see below */ 169 170 /* resources used for this function */ 171 struct pci_resource *mem_head; 172 struct pci_resource *p_mem_head; 173 struct pci_resource *io_head; 174 struct pci_resource *bus_head; 175 }; 176 177 178 /* PCI bus bridge HID */ 179 #define ACPI_PCI_HOST_HID "PNP0A03" 180 181 /* PCI BRIDGE type */ 182 #define BRIDGE_TYPE_HOST 0 183 #define BRIDGE_TYPE_P2P 1 184 185 /* ACPI _STA method value (ignore bit 4; battery present) */ 186 #define ACPI_STA_PRESENT (0x00000001) 187 #define ACPI_STA_ENABLED (0x00000002) 188 #define ACPI_STA_SHOW_IN_UI (0x00000004) 189 #define ACPI_STA_FUNCTIONING (0x00000008) 190 #define ACPI_STA_ALL (0x0000000f) 191 192 /* bridge flags */ 193 #define BRIDGE_HAS_STA (0x00000001) 194 #define BRIDGE_HAS_EJ0 (0x00000002) 195 #define BRIDGE_HAS_HPP (0x00000004) 196 #define BRIDGE_HAS_PS0 (0x00000010) 197 #define BRIDGE_HAS_PS1 (0x00000020) 198 #define BRIDGE_HAS_PS2 (0x00000040) 199 #define BRIDGE_HAS_PS3 (0x00000080) 200 201 /* slot flags */ 202 203 #define SLOT_POWEREDON (0x00000001) 204 #define SLOT_ENABLED (0x00000002) 205 #define SLOT_MULTIFUNCTION (0x00000004) 206 207 /* function flags */ 208 209 #define FUNC_HAS_STA (0x00000001) 210 #define FUNC_HAS_EJ0 (0x00000002) 211 #define FUNC_HAS_PS0 (0x00000010) 212 #define FUNC_HAS_PS1 (0x00000020) 213 #define FUNC_HAS_PS2 (0x00000040) 214 #define FUNC_HAS_PS3 (0x00000080) 215 216 /* function prototypes */ 217 218 /* acpiphp_glue.c */ 219 extern int acpiphp_glue_init (void); 220 extern void acpiphp_glue_exit (void); 221 extern int acpiphp_get_num_slots (void); 222 extern struct acpiphp_slot *get_slot_from_id (int id); 223 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data); 224 extern int acpiphp_for_each_slot (acpiphp_callback fn, void *data); 225 226 extern int acpiphp_check_bridge (struct acpiphp_bridge *bridge); 227 extern int acpiphp_enable_slot (struct acpiphp_slot *slot); 228 extern int acpiphp_disable_slot (struct acpiphp_slot *slot); 229 extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot); 230 extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot); 231 extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot); 232 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot); 233 extern u32 acpiphp_get_address (struct acpiphp_slot *slot); 234 235 /* acpiphp_pci.c */ 236 extern struct pci_dev *acpiphp_allocate_pcidev (struct pci_bus *pbus, int dev, int fn); 237 extern int acpiphp_configure_slot (struct acpiphp_slot *slot); 238 extern int acpiphp_configure_function (struct acpiphp_func *func); 239 extern int acpiphp_unconfigure_function (struct acpiphp_func *func); 240 extern int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge); 241 extern int acpiphp_init_func_resource (struct acpiphp_func *func); 242 243 /* acpiphp_res.c */ 244 extern struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size); 245 extern struct pci_resource *acpiphp_get_max_resource (struct pci_resource **head, u32 size); 246 extern struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size); 247 extern struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size); 248 extern int acpiphp_resource_sort_and_combine (struct pci_resource **head); 249 extern struct pci_resource *acpiphp_make_resource (u64 base, u32 length); 250 extern void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to); 251 extern void acpiphp_free_resource (struct pci_resource **res); 252 extern void acpiphp_dump_resource (struct acpiphp_bridge *bridge); /* debug */ 253 extern void acpiphp_dump_func_resource (struct acpiphp_func *func); /* debug */ 254 255 /* variables */ 256 extern int acpiphp_debug; 257 258 #endif /* _ACPIPHP_H */ 259