Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1
2/******************************************************************************
3 *
4 * Name: acobject.h - Definition of union acpi_operand_object (Internal object only)
5 *
6 *****************************************************************************/
7
8/*
9 * Copyright (C) 2000 - 2005, R. Byron Moore
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
30 *
31 * NO WARRANTY
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
43 */
44
45#ifndef _ACOBJECT_H
46#define _ACOBJECT_H
47
48
49/*
50 * The union acpi_operand_object is used to pass AML operands from the dispatcher
51 * to the interpreter, and to keep track of the various handlers such as
52 * address space handlers and notify handlers. The object is a constant
53 * size in order to allow it to be cached and reused.
54 */
55
56/*******************************************************************************
57 *
58 * Common Descriptors
59 *
60 ******************************************************************************/
61
62/*
63 * Common area for all objects.
64 *
65 * data_type is used to differentiate between internal descriptors, and MUST
66 * be the first byte in this structure.
67 */
68#define ACPI_OBJECT_COMMON_HEADER /* SIZE/ALIGNMENT: 32 bits, one ptr plus trailing 8-bit flag */\
69 u8 descriptor; /* To differentiate various internal objs */\
70 u8 type; /* acpi_object_type */\
71 u16 reference_count; /* For object deletion management */\
72 union acpi_operand_object *next_object; /* Objects linked to parent NS node */\
73 u8 flags; \
74
75/* Values for flag byte above */
76
77#define AOPOBJ_AML_CONSTANT 0x01
78#define AOPOBJ_STATIC_POINTER 0x02
79#define AOPOBJ_DATA_VALID 0x04
80#define AOPOBJ_OBJECT_INITIALIZED 0x08
81#define AOPOBJ_SETUP_COMPLETE 0x10
82#define AOPOBJ_SINGLE_DATUM 0x20
83
84
85/*
86 * Common bitfield for the field objects
87 * "Field Datum" -- a datum from the actual field object
88 * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
89 */
90#define ACPI_COMMON_FIELD_INFO /* SIZE/ALIGNMENT: 24 bits + three 32-bit values */\
91 u8 field_flags; /* Access, update, and lock bits */\
92 u8 attribute; /* From access_as keyword */\
93 u8 access_byte_width; /* Read/Write size in bytes */\
94 u32 bit_length; /* Length of field in bits */\
95 u32 base_byte_offset; /* Byte offset within containing object */\
96 u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
97 u8 access_bit_width; /* Read/Write size in bits (8-64) */\
98 u32 value; /* Value to store into the Bank or Index register */\
99 struct acpi_namespace_node *node; /* Link back to parent node */
100
101
102/*
103 * Fields common to both Strings and Buffers
104 */
105#define ACPI_COMMON_BUFFER_INFO \
106 u32 length;
107
108
109/*
110 * Common fields for objects that support ASL notifications
111 */
112#define ACPI_COMMON_NOTIFY_INFO \
113 union acpi_operand_object *system_notify; /* Handler for system notifies */\
114 union acpi_operand_object *device_notify; /* Handler for driver notifies */\
115 union acpi_operand_object *handler; /* Handler for Address space */
116
117
118/******************************************************************************
119 *
120 * Basic data types
121 *
122 *****************************************************************************/
123
124struct acpi_object_common
125{
126 ACPI_OBJECT_COMMON_HEADER
127};
128
129
130struct acpi_object_integer
131{
132 ACPI_OBJECT_COMMON_HEADER
133 acpi_integer value;
134};
135
136
137/*
138 * Note: The String and Buffer object must be identical through the Pointer
139 * element. There is code that depends on this.
140 */
141struct acpi_object_string /* Null terminated, ASCII characters only */
142{
143 ACPI_OBJECT_COMMON_HEADER
144 ACPI_COMMON_BUFFER_INFO
145 char *pointer; /* String in AML stream or allocated string */
146};
147
148
149struct acpi_object_buffer
150{
151 ACPI_OBJECT_COMMON_HEADER
152 ACPI_COMMON_BUFFER_INFO
153 u8 *pointer; /* Buffer in AML stream or allocated buffer */
154 struct acpi_namespace_node *node; /* Link back to parent node */
155 u8 *aml_start;
156 u32 aml_length;
157};
158
159
160struct acpi_object_package
161{
162 ACPI_OBJECT_COMMON_HEADER
163
164 u32 count; /* # of elements in package */
165 u32 aml_length;
166 u8 *aml_start;
167 struct acpi_namespace_node *node; /* Link back to parent node */
168 union acpi_operand_object **elements; /* Array of pointers to acpi_objects */
169};
170
171
172/******************************************************************************
173 *
174 * Complex data types
175 *
176 *****************************************************************************/
177
178struct acpi_object_event
179{
180 ACPI_OBJECT_COMMON_HEADER
181 void *semaphore;
182};
183
184
185#define ACPI_INFINITE_CONCURRENCY 0xFF
186
187typedef
188acpi_status (*ACPI_INTERNAL_METHOD) (
189 struct acpi_walk_state *walk_state);
190
191struct acpi_object_method
192{
193 ACPI_OBJECT_COMMON_HEADER
194 u8 method_flags;
195 u8 param_count;
196 u32 aml_length;
197 void *semaphore;
198 u8 *aml_start;
199 ACPI_INTERNAL_METHOD implementation;
200 u8 concurrency;
201 u8 thread_count;
202 acpi_owner_id owning_id;
203};
204
205
206struct acpi_object_mutex
207{
208 ACPI_OBJECT_COMMON_HEADER
209 u8 sync_level; /* 0-15, specified in Mutex() call */
210 u16 acquisition_depth; /* Allow multiple Acquires, same thread */
211 struct acpi_thread_state *owner_thread; /* Current owner of the mutex */
212 void *semaphore; /* Actual OS synchronization object */
213 union acpi_operand_object *prev; /* Link for list of acquired mutexes */
214 union acpi_operand_object *next; /* Link for list of acquired mutexes */
215 struct acpi_namespace_node *node; /* Containing namespace node */
216 u8 original_sync_level; /* Owner's original sync level (0-15) */
217};
218
219
220struct acpi_object_region
221{
222 ACPI_OBJECT_COMMON_HEADER
223
224 u8 space_id;
225 union acpi_operand_object *handler; /* Handler for region access */
226 struct acpi_namespace_node *node; /* Containing namespace node */
227 union acpi_operand_object *next;
228 u32 length;
229 acpi_physical_address address;
230};
231
232
233/******************************************************************************
234 *
235 * Objects that can be notified. All share a common notify_info area.
236 *
237 *****************************************************************************/
238
239struct acpi_object_notify_common /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
240{
241 ACPI_OBJECT_COMMON_HEADER
242 ACPI_COMMON_NOTIFY_INFO
243};
244
245
246struct acpi_object_device
247{
248 ACPI_OBJECT_COMMON_HEADER
249 ACPI_COMMON_NOTIFY_INFO
250 struct acpi_gpe_block_info *gpe_block;
251};
252
253
254struct acpi_object_power_resource
255{
256 ACPI_OBJECT_COMMON_HEADER
257 ACPI_COMMON_NOTIFY_INFO
258 u32 system_level;
259 u32 resource_order;
260};
261
262
263struct acpi_object_processor
264{
265 ACPI_OBJECT_COMMON_HEADER
266 ACPI_COMMON_NOTIFY_INFO
267 u32 proc_id;
268 u32 length;
269 acpi_io_address address;
270};
271
272
273struct acpi_object_thermal_zone
274{
275 ACPI_OBJECT_COMMON_HEADER
276 ACPI_COMMON_NOTIFY_INFO
277};
278
279
280/******************************************************************************
281 *
282 * Fields. All share a common header/info field.
283 *
284 *****************************************************************************/
285
286struct acpi_object_field_common /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
287{
288 ACPI_OBJECT_COMMON_HEADER
289 ACPI_COMMON_FIELD_INFO
290 union acpi_operand_object *region_obj; /* Containing Operation Region object */
291 /* (REGION/BANK fields only) */
292};
293
294
295struct acpi_object_region_field
296{
297 ACPI_OBJECT_COMMON_HEADER
298 ACPI_COMMON_FIELD_INFO
299 union acpi_operand_object *region_obj; /* Containing op_region object */
300};
301
302
303struct acpi_object_bank_field
304{
305 ACPI_OBJECT_COMMON_HEADER
306 ACPI_COMMON_FIELD_INFO
307 union acpi_operand_object *region_obj; /* Containing op_region object */
308 union acpi_operand_object *bank_obj; /* bank_select Register object */
309};
310
311
312struct acpi_object_index_field
313{
314 ACPI_OBJECT_COMMON_HEADER
315 ACPI_COMMON_FIELD_INFO
316
317 /*
318 * No "region_obj" pointer needed since the Index and Data registers
319 * are each field definitions unto themselves.
320 */
321 union acpi_operand_object *index_obj; /* Index register */
322 union acpi_operand_object *data_obj; /* Data register */
323};
324
325
326/* The buffer_field is different in that it is part of a Buffer, not an op_region */
327
328struct acpi_object_buffer_field
329{
330 ACPI_OBJECT_COMMON_HEADER
331 ACPI_COMMON_FIELD_INFO
332 union acpi_operand_object *buffer_obj; /* Containing Buffer object */
333};
334
335
336/******************************************************************************
337 *
338 * Objects for handlers
339 *
340 *****************************************************************************/
341
342struct acpi_object_notify_handler
343{
344 ACPI_OBJECT_COMMON_HEADER
345 struct acpi_namespace_node *node; /* Parent device */
346 acpi_notify_handler handler;
347 void *context;
348};
349
350
351/* Flags for address handler */
352
353#define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x1
354
355
356struct acpi_object_addr_handler
357{
358 ACPI_OBJECT_COMMON_HEADER
359 u8 space_id;
360 u16 hflags;
361 acpi_adr_space_handler handler;
362 struct acpi_namespace_node *node; /* Parent device */
363 void *context;
364 acpi_adr_space_setup setup;
365 union acpi_operand_object *region_list; /* regions using this handler */
366 union acpi_operand_object *next;
367};
368
369
370/******************************************************************************
371 *
372 * Special internal objects
373 *
374 *****************************************************************************/
375
376/*
377 * The Reference object type is used for these opcodes:
378 * Arg[0-6], Local[0-7], index_op, name_op, zero_op, one_op, ones_op, debug_op
379 */
380struct acpi_object_reference
381{
382 ACPI_OBJECT_COMMON_HEADER
383 u8 target_type; /* Used for index_op */
384 u16 opcode;
385 u32 offset; /* Used for arg_op, local_op, and index_op */
386 void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */
387 struct acpi_namespace_node *node;
388 union acpi_operand_object **where;
389};
390
391
392/*
393 * Extra object is used as additional storage for types that
394 * have AML code in their declarations (term_args) that must be
395 * evaluated at run time.
396 *
397 * Currently: Region and field_unit types
398 */
399struct acpi_object_extra
400{
401 ACPI_OBJECT_COMMON_HEADER
402 u8 byte_fill1;
403 u16 word_fill1;
404 u32 aml_length;
405 u8 *aml_start;
406 struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */
407 void *region_context; /* Region-specific data */
408};
409
410
411/* Additional data that can be attached to namespace nodes */
412
413struct acpi_object_data
414{
415 ACPI_OBJECT_COMMON_HEADER
416 acpi_object_handler handler;
417 void *pointer;
418};
419
420
421/* Structure used when objects are cached for reuse */
422
423struct acpi_object_cache_list
424{
425 ACPI_OBJECT_COMMON_HEADER
426 union acpi_operand_object *next; /* Link for object cache and internal lists*/
427};
428
429
430/******************************************************************************
431 *
432 * union acpi_operand_object Descriptor - a giant union of all of the above
433 *
434 *****************************************************************************/
435
436union acpi_operand_object
437{
438 struct acpi_object_common common;
439 struct acpi_object_integer integer;
440 struct acpi_object_string string;
441 struct acpi_object_buffer buffer;
442 struct acpi_object_package package;
443 struct acpi_object_event event;
444 struct acpi_object_method method;
445 struct acpi_object_mutex mutex;
446 struct acpi_object_region region;
447 struct acpi_object_notify_common common_notify;
448 struct acpi_object_device device;
449 struct acpi_object_power_resource power_resource;
450 struct acpi_object_processor processor;
451 struct acpi_object_thermal_zone thermal_zone;
452 struct acpi_object_field_common common_field;
453 struct acpi_object_region_field field;
454 struct acpi_object_buffer_field buffer_field;
455 struct acpi_object_bank_field bank_field;
456 struct acpi_object_index_field index_field;
457 struct acpi_object_notify_handler notify;
458 struct acpi_object_addr_handler address_space;
459 struct acpi_object_reference reference;
460 struct acpi_object_extra extra;
461 struct acpi_object_data data;
462 struct acpi_object_cache_list cache;
463};
464
465
466/******************************************************************************
467 *
468 * union acpi_descriptor - objects that share a common descriptor identifier
469 *
470 *****************************************************************************/
471
472/* Object descriptor types */
473
474#define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */
475#define ACPI_DESC_TYPE_STATE 0x02
476#define ACPI_DESC_TYPE_STATE_UPDATE 0x03
477#define ACPI_DESC_TYPE_STATE_PACKAGE 0x04
478#define ACPI_DESC_TYPE_STATE_CONTROL 0x05
479#define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06
480#define ACPI_DESC_TYPE_STATE_PSCOPE 0x07
481#define ACPI_DESC_TYPE_STATE_WSCOPE 0x08
482#define ACPI_DESC_TYPE_STATE_RESULT 0x09
483#define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A
484#define ACPI_DESC_TYPE_STATE_THREAD 0x0B
485#define ACPI_DESC_TYPE_WALK 0x0C
486#define ACPI_DESC_TYPE_PARSER 0x0D
487#define ACPI_DESC_TYPE_OPERAND 0x0E
488#define ACPI_DESC_TYPE_NAMED 0x0F
489#define ACPI_DESC_TYPE_MAX 0x0F
490
491
492union acpi_descriptor
493{
494 u8 descriptor_id; /* To differentiate various internal objs */\
495 union acpi_operand_object object;
496 struct acpi_namespace_node node;
497 union acpi_parse_object op;
498};
499
500
501#endif /* _ACOBJECT_H */