[34] | 1 | /* |
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| 2 | * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) |
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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 | |
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| 26 | #ifndef __ACPI_BUS_H__ |
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| 27 | #define __ACPI_BUS_H__ |
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| 28 | |
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| 29 | #include <acpi/acpi.h> |
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| 30 | |
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| 31 | #define PREFIX "ACPI: " |
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| 32 | |
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| 33 | /* TBD: Make dynamic */ |
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| 34 | #define ACPI_MAX_HANDLES 10 |
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| 35 | struct acpi_handle_list { |
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| 36 | u32 count; |
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| 37 | acpi_handle handles[ACPI_MAX_HANDLES]; |
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| 38 | }; |
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| 39 | |
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| 40 | |
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| 41 | /* acpi_utils.h */ |
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| 42 | acpi_status |
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| 43 | acpi_extract_package ( |
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| 44 | union acpi_object *package, |
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| 45 | struct acpi_buffer *format, |
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| 46 | struct acpi_buffer *buffer); |
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| 47 | acpi_status |
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| 48 | acpi_evaluate_integer ( |
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| 49 | acpi_handle handle, |
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| 50 | acpi_string pathname, |
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| 51 | struct acpi_object_list *arguments, |
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| 52 | unsigned long *data); |
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| 53 | acpi_status |
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| 54 | acpi_evaluate_reference ( |
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| 55 | acpi_handle handle, |
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| 56 | acpi_string pathname, |
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| 57 | struct acpi_object_list *arguments, |
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| 58 | struct acpi_handle_list *list); |
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| 59 | |
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| 60 | |
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| 61 | #ifdef CONFIG_ACPI_BUS |
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| 62 | |
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| 63 | #include <linux/proc_fs.h> |
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| 64 | |
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| 65 | #define ACPI_BUS_FILE_ROOT "acpi" |
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| 66 | extern struct proc_dir_entry *acpi_root_dir; |
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| 67 | extern FADT_DESCRIPTOR acpi_fadt; |
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| 68 | |
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| 69 | enum acpi_bus_removal_type { |
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| 70 | ACPI_BUS_REMOVAL_NORMAL = 0, |
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| 71 | ACPI_BUS_REMOVAL_EJECT, |
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| 72 | ACPI_BUS_REMOVAL_SUPRISE, |
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| 73 | ACPI_BUS_REMOVAL_TYPE_COUNT |
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| 74 | }; |
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| 75 | |
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| 76 | enum acpi_bus_device_type { |
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| 77 | ACPI_BUS_TYPE_DEVICE = 0, |
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| 78 | ACPI_BUS_TYPE_POWER, |
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| 79 | ACPI_BUS_TYPE_PROCESSOR, |
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| 80 | ACPI_BUS_TYPE_THERMAL, |
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| 81 | ACPI_BUS_TYPE_SYSTEM, |
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| 82 | ACPI_BUS_TYPE_POWER_BUTTON, |
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| 83 | ACPI_BUS_TYPE_SLEEP_BUTTON, |
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| 84 | ACPI_BUS_DEVICE_TYPE_COUNT |
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| 85 | }; |
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| 86 | |
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| 87 | struct acpi_driver; |
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| 88 | struct acpi_device; |
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| 89 | |
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| 90 | |
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| 91 | /* |
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| 92 | * ACPI Driver |
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| 93 | * ----------- |
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| 94 | */ |
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| 95 | |
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| 96 | typedef int (*acpi_op_add) (struct acpi_device *device); |
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| 97 | typedef int (*acpi_op_remove) (struct acpi_device *device, int type); |
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| 98 | typedef int (*acpi_op_lock) (struct acpi_device *device, int type); |
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| 99 | typedef int (*acpi_op_start) (struct acpi_device *device); |
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| 100 | typedef int (*acpi_op_stop) (struct acpi_device *device, int type); |
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| 101 | typedef int (*acpi_op_suspend) (struct acpi_device *device, int state); |
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| 102 | typedef int (*acpi_op_resume) (struct acpi_device *device, int state); |
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| 103 | typedef int (*acpi_op_scan) (struct acpi_device *device); |
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| 104 | typedef int (*acpi_op_bind) (struct acpi_device *device); |
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| 105 | typedef int (*acpi_op_unbind) (struct acpi_device *device); |
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| 106 | typedef int (*acpi_op_match) (struct acpi_device *device, |
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| 107 | struct acpi_driver *driver); |
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| 108 | |
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| 109 | struct acpi_device_ops { |
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| 110 | acpi_op_add add; |
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| 111 | acpi_op_remove remove; |
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| 112 | acpi_op_lock lock; |
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| 113 | acpi_op_start start; |
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| 114 | acpi_op_stop stop; |
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| 115 | acpi_op_suspend suspend; |
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| 116 | acpi_op_resume resume; |
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| 117 | acpi_op_scan scan; |
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| 118 | acpi_op_bind bind; |
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| 119 | acpi_op_unbind unbind; |
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| 120 | acpi_op_match match; |
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| 121 | }; |
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| 122 | |
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| 123 | struct acpi_driver { |
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| 124 | struct list_head node; |
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| 125 | char name[80]; |
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| 126 | char class[80]; |
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| 127 | atomic_t references; |
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| 128 | char *ids; /* Supported Hardware IDs */ |
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| 129 | struct acpi_device_ops ops; |
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| 130 | }; |
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| 131 | |
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| 132 | /* |
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| 133 | * ACPI Device |
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| 134 | * ----------- |
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| 135 | */ |
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| 136 | |
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| 137 | /* Status (_STA) */ |
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| 138 | |
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| 139 | struct acpi_device_status { |
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| 140 | u32 present:1; |
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| 141 | u32 enabled:1; |
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| 142 | u32 show_in_ui:1; |
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| 143 | u32 functional:1; |
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| 144 | u32 battery_present:1; |
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| 145 | u32 reserved:27; |
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| 146 | }; |
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| 147 | |
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| 148 | |
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| 149 | /* Flags */ |
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| 150 | |
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| 151 | struct acpi_device_flags { |
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| 152 | u32 dynamic_status:1; |
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| 153 | u32 hardware_id:1; |
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| 154 | u32 compatible_ids:1; |
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| 155 | u32 bus_address:1; |
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| 156 | u32 unique_id:1; |
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| 157 | u32 removable:1; |
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| 158 | u32 ejectable:1; |
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| 159 | u32 lockable:1; |
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| 160 | u32 suprise_removal_ok:1; |
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| 161 | u32 power_manageable:1; |
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| 162 | u32 performance_manageable:1; |
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| 163 | u32 wake_capable:1; /* Wakeup(_PRW) supported? */ |
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| 164 | u32 reserved:20; |
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| 165 | }; |
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| 166 | |
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| 167 | |
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| 168 | /* File System */ |
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| 169 | |
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| 170 | struct acpi_device_dir { |
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| 171 | struct proc_dir_entry *entry; |
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| 172 | }; |
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| 173 | |
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| 174 | #define acpi_device_dir(d) ((d)->dir.entry) |
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| 175 | |
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| 176 | |
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| 177 | /* Plug and Play */ |
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| 178 | |
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| 179 | typedef char acpi_bus_id[5]; |
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| 180 | typedef unsigned long acpi_bus_address; |
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| 181 | typedef char acpi_hardware_id[9]; |
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| 182 | typedef char acpi_unique_id[9]; |
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| 183 | typedef char acpi_device_name[40]; |
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| 184 | typedef char acpi_device_class[20]; |
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| 185 | |
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| 186 | struct acpi_device_pnp { |
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| 187 | acpi_bus_id bus_id; /* Object name */ |
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| 188 | acpi_bus_address bus_address; /* _ADR */ |
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| 189 | acpi_hardware_id hardware_id; /* _HID */ |
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| 190 | struct acpi_compatible_id_list *cid_list; /* _CIDs */ |
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| 191 | acpi_unique_id unique_id; /* _UID */ |
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| 192 | acpi_device_name device_name; /* Driver-determined */ |
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| 193 | acpi_device_class device_class; /* " */ |
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| 194 | }; |
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| 195 | |
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| 196 | #define acpi_device_bid(d) ((d)->pnp.bus_id) |
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| 197 | #define acpi_device_adr(d) ((d)->pnp.bus_address) |
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| 198 | #define acpi_device_hid(d) ((d)->pnp.hardware_id) |
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| 199 | #define acpi_device_uid(d) ((d)->pnp.unique_id) |
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| 200 | #define acpi_device_name(d) ((d)->pnp.device_name) |
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| 201 | #define acpi_device_class(d) ((d)->pnp.device_class) |
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| 202 | |
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| 203 | |
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| 204 | /* Power Management */ |
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| 205 | |
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| 206 | struct acpi_device_power_flags { |
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| 207 | u32 explicit_get:1; /* _PSC present? */ |
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| 208 | u32 power_resources:1; /* Power resources */ |
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| 209 | u32 inrush_current:1; /* Serialize Dx->D0 */ |
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| 210 | u32 power_removed:1; /* Optimize Dx->D0 */ |
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| 211 | u32 reserved:28; |
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| 212 | }; |
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| 213 | |
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| 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 | |
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| 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 | |
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| 231 | |
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| 232 | /* Performance Management */ |
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| 233 | |
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| 234 | struct acpi_device_perf_flags { |
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| 235 | u8 reserved:8; |
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| 236 | }; |
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| 237 | |
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| 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 | |
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| 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 | |
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| 255 | /* Wakeup Management */ |
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| 256 | struct acpi_device_wakeup_flags { |
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| 257 | u8 valid:1; /* Can successfully enable wakeup? */ |
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| 258 | u8 run_wake:1; /* Run-Wake GPE devices */ |
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| 259 | }; |
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| 260 | |
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| 261 | struct acpi_device_wakeup_state { |
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| 262 | u8 enabled:1; |
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| 263 | u8 active:1; |
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| 264 | }; |
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| 265 | |
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| 266 | struct acpi_device_wakeup { |
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| 267 | acpi_handle gpe_device; |
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| 268 | acpi_integer gpe_number;; |
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| 269 | acpi_integer sleep_state; |
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| 270 | struct acpi_handle_list resources; |
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| 271 | struct acpi_device_wakeup_state state; |
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| 272 | struct acpi_device_wakeup_flags flags; |
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| 273 | }; |
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| 274 | |
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| 275 | /* Device */ |
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| 276 | |
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| 277 | struct acpi_device { |
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| 278 | acpi_handle handle; |
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| 279 | struct acpi_device *parent; |
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| 280 | struct list_head children; |
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| 281 | struct list_head node; |
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| 282 | struct list_head wakeup_list; |
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| 283 | struct list_head g_list; |
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| 284 | struct acpi_device_status status; |
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| 285 | struct acpi_device_flags flags; |
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| 286 | struct acpi_device_pnp pnp; |
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| 287 | struct acpi_device_power power; |
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| 288 | struct acpi_device_wakeup wakeup; |
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| 289 | struct acpi_device_perf performance; |
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| 290 | struct acpi_device_dir dir; |
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| 291 | struct acpi_device_ops ops; |
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| 292 | struct acpi_driver *driver; |
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| 293 | void *driver_data; |
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| 294 | struct kobject kobj; |
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| 295 | }; |
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| 296 | |
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| 297 | #define acpi_driver_data(d) ((d)->driver_data) |
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| 298 | |
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| 299 | |
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| 300 | /* |
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| 301 | * Events |
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| 302 | * ------ |
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| 303 | */ |
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| 304 | |
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| 305 | struct acpi_bus_event { |
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| 306 | struct list_head node; |
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| 307 | acpi_device_class device_class; |
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| 308 | acpi_bus_id bus_id; |
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| 309 | u32 type; |
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| 310 | u32 data; |
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| 311 | }; |
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| 312 | |
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| 313 | extern struct subsystem acpi_subsys; |
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| 314 | |
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| 315 | /* |
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| 316 | * External Functions |
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| 317 | */ |
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| 318 | |
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| 319 | int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); |
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| 320 | void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context); |
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| 321 | int acpi_bus_get_status (struct acpi_device *device); |
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| 322 | int acpi_bus_get_power (acpi_handle handle, int *state); |
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| 323 | int acpi_bus_set_power (acpi_handle handle, int state); |
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| 324 | int acpi_bus_generate_event (struct acpi_device *device, u8 type, int data); |
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| 325 | int acpi_bus_receive_event (struct acpi_bus_event *event); |
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| 326 | int acpi_bus_register_driver (struct acpi_driver *driver); |
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| 327 | int acpi_bus_unregister_driver (struct acpi_driver *driver); |
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| 328 | int acpi_bus_scan (struct acpi_device *start); |
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| 329 | int acpi_bus_trim(struct acpi_device *start, int rmdevice); |
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| 330 | int acpi_bus_add (struct acpi_device **child, struct acpi_device *parent, |
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| 331 | acpi_handle handle, int type); |
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| 332 | |
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| 333 | |
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| 334 | int acpi_match_ids (struct acpi_device *device, char *ids); |
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| 335 | int acpi_create_dir(struct acpi_device *); |
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| 336 | void acpi_remove_dir(struct acpi_device *); |
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| 337 | |
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| 338 | #endif /*CONFIG_ACPI_BUS*/ |
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| 339 | |
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| 340 | #endif /*__ACPI_BUS_H__*/ |
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