drivers/pci/hotplug/acpiphp.h

   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 <linux/kobject.h>      /* for KOBJ_NAME_LEN */
  38 #include "pci_hotplug.h"
  39
  40 #define dbg(format, arg...)                                     \
  41         do {                                                    \
  42                 if (acpiphp_debug)                              \
  43                         printk(KERN_DEBUG "%s: " format,        \
  44                                 MY_NAME , ## arg);              \
  45         } while (0)
  46 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
  47 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
  48 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
  49
  50 /* name size which is used for entries in pcihpfs */
  51 #define SLOT_NAME_SIZE  KOBJ_NAME_LEN           /* {_SUN} */
  52
  53 struct acpiphp_bridge;
  54 struct acpiphp_slot;
  55 struct pci_resource;
  56
  57 /*
  58  * struct slot - slot information for each *physical* slot
  59  */
  60 struct slot {
  61         u8 number;
  62         struct hotplug_slot     *hotplug_slot;
  63         struct list_head        slot_list;
  64
  65         struct acpiphp_slot     *acpi_slot;
  66 };
  67
  68 /*
  69  * struct pci_resource - describes pci resource (mem, pfmem, io, bus)
  70  */
  71 struct pci_resource {
  72         struct pci_resource * next;
  73         u64 base;
  74         u32 length;
  75 };
  76
  77 /**
  78  * struct hpp_param - ACPI 2.0 _HPP Hot Plug Parameters
  79  * @cache_line_size in DWORD
  80  * @latency_timer in PCI clock
  81  * @enable_SERR 0 or 1
  82  * @enable_PERR 0 or 1
  83  */
  84 struct hpp_param {
  85         u8 cache_line_size;
  86         u8 latency_timer;
  87         u8 enable_SERR;
  88         u8 enable_PERR;
  89 };
  90
  91
  92 /**
  93  * struct acpiphp_bridge - PCI bridge information
  94  *
  95  * for each bridge device in ACPI namespace
  96  */
  97 struct acpiphp_bridge {
  98         struct list_head list;
  99         acpi_handle handle;
 100         struct acpiphp_slot *slots;
 101         int type;
 102         int nr_slots;
 103
 104         u8 seg;
 105         u8 bus;
 106         u8 sub;
 107
 108         u32 flags;
 109
 110         /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
 111         struct pci_bus *pci_bus;
 112
 113         /* PCI-to-PCI bridge device */
 114         struct pci_dev *pci_dev;
 115
 116         /* ACPI 2.0 _HPP parameters */
 117         struct hpp_param hpp;
 118
 119         spinlock_t res_lock;
 120
 121         /* available resources on this bus */
 122         struct pci_resource *mem_head;
 123         struct pci_resource *p_mem_head;
 124         struct pci_resource *io_head;
 125         struct pci_resource *bus_head;
 126 };
 127
 128
 129 /**
 130  * struct acpiphp_slot - PCI slot information
 131  *
 132  * PCI slot information for each *physical* PCI slot
 133  */
 134 struct acpiphp_slot {
 135         struct acpiphp_slot *next;
 136         struct acpiphp_bridge *bridge;  /* parent */
 137         struct list_head funcs;         /* one slot may have different
 138                                            objects (i.e. for each function) */
 139         struct semaphore crit_sect;
 140
 141         u32             id;             /* slot id (serial #) for hotplug core */
 142         u8              device;         /* pci device# */
 143
 144         u32             sun;            /* ACPI _SUN (slot unique number) */
 145         u32             slotno;         /* slot number relative to bridge */
 146         u32             flags;          /* see below */
 147 };
 148
 149
 150 /**
 151  * struct acpiphp_func - PCI function information
 152  *
 153  * PCI function information for each object in ACPI namespace
 154  * typically 8 objects per slot (i.e. for each PCI function)
 155  */
 156 struct acpiphp_func {
 157         struct acpiphp_slot *slot;      /* parent */
 158
 159         struct list_head sibling;
 160         struct pci_dev *pci_dev;
 161
 162         acpi_handle     handle;
 163
 164         u8              function;       /* pci function# */
 165         u32             flags;          /* see below */
 166
 167         /* resources used for this function */
 168         struct pci_resource *mem_head;
 169         struct pci_resource *p_mem_head;
 170         struct pci_resource *io_head;
 171         struct pci_resource *bus_head;
 172 };
 173
 174 /**
 175  * struct acpiphp_attention_info - device specific attention registration
 176  *
 177  * ACPI has no generic method of setting/getting attention status
 178  * this allows for device specific driver registration
 179  */
 180 struct acpiphp_attention_info
 181 {
 182         int (*set_attn)(struct hotplug_slot *slot, u8 status);
 183         int (*get_attn)(struct hotplug_slot *slot, u8 *status);
 184         struct module *owner;
 185 };
 186
 187 /* PCI bus bridge HID */
 188 #define ACPI_PCI_HOST_HID               "PNP0A03"
 189
 190 /* PCI BRIDGE type */
 191 #define BRIDGE_TYPE_HOST                0
 192 #define BRIDGE_TYPE_P2P                 1
 193
 194 /* ACPI _STA method value (ignore bit 4; battery present) */
 195 #define ACPI_STA_PRESENT                (0x00000001)
 196 #define ACPI_STA_ENABLED                (0x00000002)
 197 #define ACPI_STA_SHOW_IN_UI             (0x00000004)
 198 #define ACPI_STA_FUNCTIONING            (0x00000008)
 199 #define ACPI_STA_ALL                    (0x0000000f)
 200
 201 /* bridge flags */
 202 #define BRIDGE_HAS_STA          (0x00000001)
 203 #define BRIDGE_HAS_EJ0          (0x00000002)
 204 #define BRIDGE_HAS_HPP          (0x00000004)
 205 #define BRIDGE_HAS_PS0          (0x00000010)
 206 #define BRIDGE_HAS_PS1          (0x00000020)
 207 #define BRIDGE_HAS_PS2          (0x00000040)
 208 #define BRIDGE_HAS_PS3          (0x00000080)
 209
 210 /* slot flags */
 211
 212 #define SLOT_POWEREDON          (0x00000001)
 213 #define SLOT_ENABLED            (0x00000002)
 214 #define SLOT_MULTIFUNCTION      (0x00000004)
 215
 216 /* function flags */
 217
 218 #define FUNC_HAS_STA            (0x00000001)
 219 #define FUNC_HAS_EJ0            (0x00000002)
 220 #define FUNC_HAS_PS0            (0x00000010)
 221 #define FUNC_HAS_PS1            (0x00000020)
 222 #define FUNC_HAS_PS2            (0x00000040)
 223 #define FUNC_HAS_PS3            (0x00000080)
 224
 225 /* function prototypes */
 226
 227 /* acpiphp_core.c */
 228 extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
 229 extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
 230
 231 /* acpiphp_glue.c */
 232 extern int acpiphp_glue_init (void);
 233 extern void acpiphp_glue_exit (void);
 234 extern int acpiphp_get_num_slots (void);
 235 extern struct acpiphp_slot *get_slot_from_id (int id);
 236 typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
 237
 238 extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
 239 extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
 240 extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
 241 extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
 242 extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
 243 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
 244 extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
 245
 246 /* acpiphp_pci.c */
 247 extern struct pci_dev *acpiphp_allocate_pcidev (struct pci_bus *pbus, int dev, int fn);
 248 extern int acpiphp_configure_slot (struct acpiphp_slot *slot);
 249 extern int acpiphp_configure_function (struct acpiphp_func *func);
 250 extern void acpiphp_unconfigure_function (struct acpiphp_func *func);
 251 extern int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge);
 252 extern int acpiphp_init_func_resource (struct acpiphp_func *func);
 253
 254 /* acpiphp_res.c */
 255 extern struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size);
 256 extern struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size);
 257 extern struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size);
 258 extern int acpiphp_resource_sort_and_combine (struct pci_resource **head);
 259 extern struct pci_resource *acpiphp_make_resource (u64 base, u32 length);
 260 extern void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to);
 261 extern void acpiphp_free_resource (struct pci_resource **res);
 262 extern void acpiphp_dump_resource (struct acpiphp_bridge *bridge); /* debug */
 263 extern void acpiphp_dump_func_resource (struct acpiphp_func *func); /* debug */
 264
 265 /* variables */
 266 extern int acpiphp_debug;
 267
 268 #endif /* _ACPIPHP_H */