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434 | giacomo | 1 | /* |
2 | * acpi_bus.h - ACPI Bus Driver ($Revision: 1.1 $) |
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3 | * |
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4 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
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5 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
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6 | * |
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7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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8 | * |
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9 | * This program is free software; you can redistribute it and/or modify |
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10 | * it under the terms of the GNU General Public License as published by |
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11 | * the Free Software Foundation; either version 2 of the License, or (at |
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12 | * your option) any later version. |
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13 | * |
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14 | * This program is distributed in the hope that it will be useful, but |
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15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | * General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License along |
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20 | * with this program; if not, write to the Free Software Foundation, Inc., |
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21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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22 | * |
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23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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24 | */ |
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25 | |||
26 | #ifndef __ACPI_BUS_H__ |
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27 | #define __ACPI_BUS_H__ |
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28 | |||
29 | #include <linux/kobject.h> |
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30 | |||
31 | #include <acpi/acpi.h> |
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32 | |||
33 | #define PREFIX "ACPI: " |
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34 | |||
35 | extern int acpi_disabled; |
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36 | |||
37 | /* TBD: Make dynamic */ |
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38 | #define ACPI_MAX_HANDLES 10 |
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39 | struct acpi_handle_list { |
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40 | u32 count; |
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41 | acpi_handle handles[ACPI_MAX_HANDLES]; |
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42 | }; |
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43 | |||
44 | |||
45 | /* acpi_utils.h */ |
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46 | acpi_status |
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47 | acpi_extract_package ( |
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48 | union acpi_object *package, |
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49 | struct acpi_buffer *format, |
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50 | struct acpi_buffer *buffer); |
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51 | acpi_status |
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52 | acpi_evaluate_integer ( |
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53 | acpi_handle handle, |
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54 | acpi_string pathname, |
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55 | struct acpi_object_list *arguments, |
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56 | unsigned long *data); |
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57 | acpi_status |
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58 | acpi_evaluate_reference ( |
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59 | acpi_handle handle, |
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60 | acpi_string pathname, |
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61 | struct acpi_object_list *arguments, |
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62 | struct acpi_handle_list *list); |
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63 | |||
64 | |||
65 | #ifdef CONFIG_ACPI_BUS |
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66 | |||
67 | #include <linux/proc_fs.h> |
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68 | |||
69 | #define ACPI_BUS_FILE_ROOT "acpi" |
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70 | extern struct proc_dir_entry *acpi_root_dir; |
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71 | extern FADT_DESCRIPTOR acpi_fadt; |
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72 | |||
73 | enum acpi_bus_removal_type { |
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74 | ACPI_BUS_REMOVAL_NORMAL = 0, |
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75 | ACPI_BUS_REMOVAL_EJECT, |
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76 | ACPI_BUS_REMOVAL_SUPRISE, |
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77 | ACPI_BUS_REMOVAL_TYPE_COUNT |
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78 | }; |
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79 | |||
80 | enum acpi_bus_device_type { |
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81 | ACPI_BUS_TYPE_DEVICE = 0, |
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82 | ACPI_BUS_TYPE_POWER, |
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83 | ACPI_BUS_TYPE_PROCESSOR, |
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84 | ACPI_BUS_TYPE_THERMAL, |
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85 | ACPI_BUS_TYPE_SYSTEM, |
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86 | ACPI_BUS_TYPE_POWER_BUTTON, |
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87 | ACPI_BUS_TYPE_SLEEP_BUTTON, |
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88 | ACPI_BUS_DEVICE_TYPE_COUNT |
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89 | }; |
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90 | |||
91 | struct acpi_driver; |
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92 | struct acpi_device; |
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93 | |||
94 | |||
95 | /* |
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96 | * ACPI Driver |
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97 | * ----------- |
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98 | */ |
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99 | |||
100 | typedef int (*acpi_op_add) (struct acpi_device *device); |
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101 | typedef int (*acpi_op_remove) (struct acpi_device *device, int type); |
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102 | typedef int (*acpi_op_lock) (struct acpi_device *device, int type); |
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103 | typedef int (*acpi_op_start) (struct acpi_device *device); |
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104 | typedef int (*acpi_op_stop) (struct acpi_device *device, int type); |
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105 | typedef int (*acpi_op_suspend) (struct acpi_device *device, int state); |
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106 | typedef int (*acpi_op_resume) (struct acpi_device *device, int state); |
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107 | typedef int (*acpi_op_scan) (struct acpi_device *device); |
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108 | typedef int (*acpi_op_bind) (struct acpi_device *device); |
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109 | |||
110 | struct acpi_device_ops { |
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111 | acpi_op_add add; |
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112 | acpi_op_remove remove; |
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113 | acpi_op_lock lock; |
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114 | acpi_op_start start; |
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115 | acpi_op_stop stop; |
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116 | acpi_op_suspend suspend; |
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117 | acpi_op_resume resume; |
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118 | acpi_op_scan scan; |
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119 | acpi_op_bind bind; |
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120 | }; |
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121 | |||
122 | struct acpi_driver { |
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123 | struct list_head node; |
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124 | char name[80]; |
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125 | char class[80]; |
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126 | atomic_t references; |
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127 | char *ids; /* Supported Hardware IDs */ |
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128 | struct acpi_device_ops ops; |
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129 | }; |
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130 | |||
131 | /* |
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132 | * ACPI Device |
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133 | * ----------- |
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134 | */ |
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135 | |||
136 | /* Status (_STA) */ |
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137 | |||
138 | struct acpi_device_status { |
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139 | u32 present:1; |
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140 | u32 enabled:1; |
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141 | u32 show_in_ui:1; |
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142 | u32 functional:1; |
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143 | u32 battery_present:1; |
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144 | u32 reserved:27; |
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145 | }; |
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146 | |||
147 | |||
148 | /* Flags */ |
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149 | |||
150 | struct acpi_device_flags { |
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151 | u32 dynamic_status:1; |
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152 | u32 hardware_id:1; |
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153 | u32 compatible_ids:1; |
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154 | u32 bus_address:1; |
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155 | u32 unique_id:1; |
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156 | u32 removable:1; |
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157 | u32 ejectable:1; |
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158 | u32 lockable:1; |
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159 | u32 suprise_removal_ok:1; |
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160 | u32 power_manageable:1; |
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161 | u32 performance_manageable:1; |
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162 | u32 reserved:21; |
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163 | }; |
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164 | |||
165 | |||
166 | /* File System */ |
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167 | |||
168 | struct acpi_device_dir { |
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169 | struct proc_dir_entry *entry; |
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170 | }; |
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171 | |||
172 | #define acpi_device_dir(d) ((d)->dir.entry) |
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173 | |||
174 | |||
175 | /* Plug and Play */ |
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176 | |||
177 | typedef char acpi_bus_id[5]; |
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178 | typedef unsigned long acpi_bus_address; |
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179 | typedef char acpi_hardware_id[9]; |
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180 | typedef char acpi_unique_id[9]; |
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181 | typedef char acpi_device_name[40]; |
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182 | typedef char acpi_device_class[20]; |
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183 | |||
184 | struct acpi_device_pnp { |
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185 | acpi_bus_id bus_id; /* Object name */ |
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186 | acpi_bus_address bus_address; /* _ADR */ |
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187 | acpi_hardware_id hardware_id; /* _HID */ |
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188 | struct acpi_compatible_id_list *cid_list; /* _CIDs */ |
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189 | acpi_unique_id unique_id; /* _UID */ |
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190 | acpi_device_name device_name; /* Driver-determined */ |
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191 | acpi_device_class device_class; /* " */ |
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192 | }; |
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193 | |||
194 | #define acpi_device_bid(d) ((d)->pnp.bus_id) |
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195 | #define acpi_device_adr(d) ((d)->pnp.bus_address) |
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196 | #define acpi_device_hid(d) ((d)->pnp.hardware_id) |
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197 | #define acpi_device_uid(d) ((d)->pnp.unique_id) |
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198 | #define acpi_device_name(d) ((d)->pnp.device_name) |
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199 | #define acpi_device_class(d) ((d)->pnp.device_class) |
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200 | |||
201 | |||
202 | /* Power Management */ |
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203 | |||
204 | struct acpi_device_power_flags { |
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205 | u32 explicit_get:1; /* _PSC present? */ |
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206 | u32 power_resources:1; /* Power resources */ |
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207 | u32 inrush_current:1; /* Serialize Dx->D0 */ |
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208 | u32 wake_capable:1; /* Wakeup supported? */ |
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209 | u32 wake_enabled:1; /* Enabled for wakeup */ |
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210 | u32 power_removed:1; /* Optimize Dx->D0 */ |
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211 | u32 reserved:26; |
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212 | }; |
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213 | |||
214 | struct acpi_device_power_state { |
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215 | struct { |
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216 | u8 valid:1; |
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217 | u8 explicit_set:1; /* _PSx present? */ |
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218 | u8 reserved:6; |
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219 | } flags; |
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220 | int power; /* % Power (compared to D0) */ |
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221 | int latency; /* Dx->D0 time (microseconds) */ |
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222 | struct acpi_handle_list resources; /* Power resources referenced */ |
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223 | }; |
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224 | |||
225 | struct acpi_device_power { |
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226 | int state; /* Current state */ |
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227 | struct acpi_device_power_flags flags; |
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228 | struct acpi_device_power_state states[4]; /* Power states (D0-D3) */ |
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229 | }; |
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230 | |||
231 | |||
232 | /* Performance Management */ |
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233 | |||
234 | struct acpi_device_perf_flags { |
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235 | u8 reserved:8; |
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236 | }; |
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237 | |||
238 | struct acpi_device_perf_state { |
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239 | struct { |
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240 | u8 valid:1; |
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241 | u8 reserved:7; |
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242 | } flags; |
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243 | u8 power; /* % Power (compared to P0) */ |
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244 | u8 performance; /* % Performance ( " ) */ |
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245 | int latency; /* Px->P0 time (microseconds) */ |
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246 | }; |
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247 | |||
248 | struct acpi_device_perf { |
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249 | int state; |
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250 | struct acpi_device_perf_flags flags; |
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251 | int state_count; |
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252 | struct acpi_device_perf_state *states; |
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253 | }; |
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254 | |||
255 | |||
256 | /* Device */ |
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257 | |||
258 | struct acpi_device { |
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259 | acpi_handle handle; |
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260 | struct acpi_device *parent; |
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261 | struct list_head children; |
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262 | struct list_head node; |
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263 | struct list_head g_list; |
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264 | struct acpi_device_status status; |
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265 | struct acpi_device_flags flags; |
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266 | struct acpi_device_pnp pnp; |
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267 | struct acpi_device_power power; |
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268 | struct acpi_device_perf performance; |
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269 | struct acpi_device_dir dir; |
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270 | struct acpi_device_ops ops; |
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271 | struct acpi_driver *driver; |
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272 | void *driver_data; |
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273 | struct kobject kobj; |
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274 | }; |
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275 | |||
276 | #define acpi_driver_data(d) ((d)->driver_data) |
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277 | |||
278 | |||
279 | /* |
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280 | * Events |
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281 | * ------ |
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282 | */ |
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283 | |||
284 | struct acpi_bus_event { |
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285 | struct list_head node; |
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286 | acpi_device_class device_class; |
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287 | acpi_bus_id bus_id; |
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288 | u32 type; |
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289 | u32 data; |
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290 | }; |
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291 | |||
292 | extern struct subsystem acpi_subsys; |
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293 | |||
294 | /* |
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295 | * External Functions |
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296 | */ |
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297 | |||
298 | int acpi_bus_get_device(acpi_handle, struct acpi_device **device); |
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299 | int acpi_bus_get_status (struct acpi_device *device); |
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300 | int acpi_bus_get_power (acpi_handle handle, int *state); |
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301 | int acpi_bus_set_power (acpi_handle handle, int state); |
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302 | int acpi_bus_generate_event (struct acpi_device *device, u8 type, int data); |
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303 | int acpi_bus_receive_event (struct acpi_bus_event *event); |
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304 | int acpi_bus_register_driver (struct acpi_driver *driver); |
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305 | int acpi_bus_unregister_driver (struct acpi_driver *driver); |
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306 | |||
307 | int acpi_create_dir(struct acpi_device *); |
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308 | void acpi_remove_dir(struct acpi_device *); |
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309 | |||
310 | #endif /*CONFIG_ACPI_BUS*/ |
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311 | |||
312 | #endif /*__ACPI_BUS_H__*/ |