Linux preempt-rt

Check our new training course

Real-Time Linux with PREEMPT_RT

Check our new training course
with Creative Commons CC-BY-SA
lecture and lab materials

Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500

/******************************************************************************
 *
 * Name: acobject.h - Definition of union acpi_operand_object    (Internal object only)
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2004, R. Byron Moore
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#ifndef _ACOBJECT_H
#define _ACOBJECT_H


/*
 * The union acpi_operand_object    is used to pass AML operands from the dispatcher
 * to the interpreter, and to keep track of the various handlers such as
 * address space handlers and notify handlers.  The object is a constant
 * size in order to allow it to be cached and reused.
 */

/*******************************************************************************
 *
 * Common Descriptors
 *
 ******************************************************************************/

/*
 * Common area for all objects.
 *
 * data_type is used to differentiate between internal descriptors, and MUST
 * be the first byte in this structure.
 */
#define ACPI_OBJECT_COMMON_HEADER   /* SIZE/ALIGNMENT: 32 bits, one ptr plus trailing 8-bit flag */\
	u8                                      descriptor;         /* To differentiate various internal objs */\
	u8                                      type;               /* acpi_object_type */\
	u16                                     reference_count;    /* For object deletion management */\
	union acpi_operand_object               *next_object;       /* Objects linked to parent NS node */\
	u8                                      flags; \

/* Values for flag byte above */

#define AOPOBJ_AML_CONSTANT         0x01
#define AOPOBJ_STATIC_POINTER       0x02
#define AOPOBJ_DATA_VALID           0x04
#define AOPOBJ_OBJECT_INITIALIZED   0x08
#define AOPOBJ_SETUP_COMPLETE       0x10
#define AOPOBJ_SINGLE_DATUM         0x20


/*
 * Common bitfield for the field objects
 * "Field Datum"  -- a datum from the actual field object
 * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
 */
#define ACPI_COMMON_FIELD_INFO      /* SIZE/ALIGNMENT: 24 bits + three 32-bit values */\
	u8                                      field_flags;        /* Access, update, and lock bits */\
	u8                                      attribute;          /* From access_as keyword */\
	u8                                      access_byte_width;  /* Read/Write size in bytes */\
	u32                                     bit_length;         /* Length of field in bits */\
	u32                                     base_byte_offset;   /* Byte offset within containing object */\
	u8                                      start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
	u8                                      datum_valid_bits;   /* Valid bit in first "Field datum" */\
	u8                                      end_field_valid_bits; /* Valid bits in the last "field datum" */\
	u8                                      end_buffer_valid_bits; /* Valid bits in the last "buffer datum" */\
	u32                                     value;              /* Value to store into the Bank or Index register */\
	struct acpi_namespace_node              *node;              /* Link back to parent node */


/*
 * Fields common to both Strings and Buffers
 */
#define ACPI_COMMON_BUFFER_INFO \
	u32                                     length;


/*
 * Common fields for objects that support ASL notifications
 */
#define ACPI_COMMON_NOTIFY_INFO \
	union acpi_operand_object               *system_notify;     /* Handler for system notifies */\
	union acpi_operand_object               *device_notify;     /* Handler for driver notifies */\
	union acpi_operand_object               *handler;           /* Handler for Address space */


/******************************************************************************
 *
 * Basic data types
 *
 *****************************************************************************/

struct acpi_object_common
{
	ACPI_OBJECT_COMMON_HEADER
};


struct acpi_object_integer
{
	ACPI_OBJECT_COMMON_HEADER
	acpi_integer                            value;
};


struct acpi_object_string           /* Null terminated, ASCII characters only */
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_BUFFER_INFO
	char                                    *pointer;           /* String in AML stream or allocated string */
};


struct acpi_object_buffer
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_BUFFER_INFO
	u8                                      *pointer;           /* Buffer in AML stream or allocated buffer */
	struct acpi_namespace_node              *node;              /* Link back to parent node */
	u8                                      *aml_start;
	u32                                     aml_length;
};


struct acpi_object_package
{
	ACPI_OBJECT_COMMON_HEADER

	u32                                     count;              /* # of elements in package */
	u32                                     aml_length;
	u8                                      *aml_start;
	struct acpi_namespace_node              *node;              /* Link back to parent node */
	union acpi_operand_object               **elements;         /* Array of pointers to acpi_objects */
};


/******************************************************************************
 *
 * Complex data types
 *
 *****************************************************************************/

struct acpi_object_event
{
	ACPI_OBJECT_COMMON_HEADER
	void                                    *semaphore;
};


#define ACPI_INFINITE_CONCURRENCY   0xFF

typedef
acpi_status (*ACPI_INTERNAL_METHOD) (
	struct acpi_walk_state          *walk_state);

struct acpi_object_method
{
	ACPI_OBJECT_COMMON_HEADER
	u8                                      method_flags;
	u8                                      param_count;
	u32                                     aml_length;
	void                                    *semaphore;
	u8                                      *aml_start;
	ACPI_INTERNAL_METHOD            implementation;
	u8                                      concurrency;
	u8                                      thread_count;
	acpi_owner_id                           owning_id;
};


struct acpi_object_mutex
{
	ACPI_OBJECT_COMMON_HEADER
	u8                                      sync_level;         /* 0-15, specified in Mutex() call */
	u16                                     acquisition_depth;  /* Allow multiple Acquires, same thread */
	struct acpi_thread_state                *owner_thread;      /* Current owner of the mutex */
	void                                    *semaphore;         /* Actual OS synchronization object */
	union acpi_operand_object               *prev;              /* Link for list of acquired mutexes */
	union acpi_operand_object               *next;              /* Link for list of acquired mutexes */
	struct acpi_namespace_node              *node;              /* Containing namespace node */
	u8                                      original_sync_level; /* Owner's original sync level (0-15) */
};


struct acpi_object_region
{
	ACPI_OBJECT_COMMON_HEADER

	u8                                      space_id;
	union acpi_operand_object               *handler;           /* Handler for region access */
	struct acpi_namespace_node              *node;              /* Containing namespace node */
	union acpi_operand_object               *next;
	u32                                     length;
	acpi_physical_address                   address;
};


/******************************************************************************
 *
 * Objects that can be notified.  All share a common notify_info area.
 *
 *****************************************************************************/

struct acpi_object_notify_common            /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_NOTIFY_INFO
};


struct acpi_object_device
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_NOTIFY_INFO
	struct acpi_gpe_block_info              *gpe_block;
};


struct acpi_object_power_resource
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_NOTIFY_INFO
	u32                                     system_level;
	u32                                     resource_order;
};


struct acpi_object_processor
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_NOTIFY_INFO
	u32                                     proc_id;
	u32                                     length;
	acpi_io_address                         address;
};


struct acpi_object_thermal_zone
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_NOTIFY_INFO
};


/******************************************************************************
 *
 * Fields.  All share a common header/info field.
 *
 *****************************************************************************/

struct acpi_object_field_common                         /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_FIELD_INFO
	union acpi_operand_object               *region_obj;        /* Containing Operation Region object */
			  /* (REGION/BANK fields only) */
};


struct acpi_object_region_field
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_FIELD_INFO
	union acpi_operand_object               *region_obj;        /* Containing op_region object */
};


struct acpi_object_bank_field
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_FIELD_INFO
	union acpi_operand_object               *region_obj;        /* Containing op_region object */
	union acpi_operand_object               *bank_obj;          /* bank_select Register object */
};


struct acpi_object_index_field
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_FIELD_INFO

	/*
	 * No "region_obj" pointer needed since the Index and Data registers
	 * are each field definitions unto themselves.
	 */
	union acpi_operand_object               *index_obj;         /* Index register */
	union acpi_operand_object               *data_obj;          /* Data register */
};


/* The buffer_field is different in that it is part of a Buffer, not an op_region */

struct acpi_object_buffer_field
{
	ACPI_OBJECT_COMMON_HEADER
	ACPI_COMMON_FIELD_INFO
	union acpi_operand_object               *buffer_obj;        /* Containing Buffer object */
};


/******************************************************************************
 *
 * Objects for handlers
 *
 *****************************************************************************/

struct acpi_object_notify_handler
{
	ACPI_OBJECT_COMMON_HEADER
	struct acpi_namespace_node              *node;              /* Parent device */
	acpi_notify_handler                     handler;
	void                                    *context;
};


/* Flags for address handler */

#define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED  0x1


struct acpi_object_addr_handler
{
	ACPI_OBJECT_COMMON_HEADER
	u8                                      space_id;
	u16                                     hflags;
	acpi_adr_space_handler                  handler;
	struct acpi_namespace_node              *node;              /* Parent device */
	void                                    *context;
	acpi_adr_space_setup                    setup;
	union acpi_operand_object               *region_list;       /* regions using this handler */
	union acpi_operand_object               *next;
};


/******************************************************************************
 *
 * Special internal objects
 *
 *****************************************************************************/

/*
 * The Reference object type is used for these opcodes:
 * Arg[0-6], Local[0-7], index_op, name_op, zero_op, one_op, ones_op, debug_op
 */
struct acpi_object_reference
{
	ACPI_OBJECT_COMMON_HEADER
	u8                                      target_type;        /* Used for index_op */
	u16                                     opcode;
	u32                                     offset;             /* Used for arg_op, local_op, and index_op */
	void                                    *object;            /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object  */
	struct acpi_namespace_node              *node;
	union acpi_operand_object               **where;
};


/*
 * Extra object is used as additional storage for types that
 * have AML code in their declarations (term_args) that must be
 * evaluated at run time.
 *
 * Currently: Region and field_unit types
 */
struct acpi_object_extra
{
	ACPI_OBJECT_COMMON_HEADER
	u8                                      byte_fill1;
	u16                                     word_fill1;
	u32                                     aml_length;
	u8                                      *aml_start;
	struct acpi_namespace_node              *method_REG;        /* _REG method for this region (if any) */
	void                                    *region_context;    /* Region-specific data */
};


/* Additional data that can be attached to namespace nodes */

struct acpi_object_data
{
	ACPI_OBJECT_COMMON_HEADER
	acpi_object_handler                     handler;
	void                                    *pointer;
};


/* Structure used when objects are cached for reuse */

struct acpi_object_cache_list
{
	ACPI_OBJECT_COMMON_HEADER
	union acpi_operand_object               *next;              /* Link for object cache and internal lists*/
};


/******************************************************************************
 *
 * union acpi_operand_object Descriptor - a giant union of all of the above
 *
 *****************************************************************************/

union acpi_operand_object
{
	struct acpi_object_common               common;
	struct acpi_object_integer              integer;
	struct acpi_object_string               string;
	struct acpi_object_buffer               buffer;
	struct acpi_object_package              package;
	struct acpi_object_event                event;
	struct acpi_object_method               method;
	struct acpi_object_mutex                mutex;
	struct acpi_object_region               region;
	struct acpi_object_notify_common        common_notify;
	struct acpi_object_device               device;
	struct acpi_object_power_resource       power_resource;
	struct acpi_object_processor            processor;
	struct acpi_object_thermal_zone         thermal_zone;
	struct acpi_object_field_common         common_field;
	struct acpi_object_region_field         field;
	struct acpi_object_buffer_field         buffer_field;
	struct acpi_object_bank_field           bank_field;
	struct acpi_object_index_field          index_field;
	struct acpi_object_notify_handler       notify;
	struct acpi_object_addr_handler         address_space;
	struct acpi_object_reference            reference;
	struct acpi_object_extra                extra;
	struct acpi_object_data                 data;
	struct acpi_object_cache_list           cache;
};


/******************************************************************************
 *
 * union acpi_descriptor - objects that share a common descriptor identifier
 *
 *****************************************************************************/


/* Object descriptor types */

#define ACPI_DESC_TYPE_CACHED           0x01        /* Used only when object is cached */
#define ACPI_DESC_TYPE_STATE            0x02
#define ACPI_DESC_TYPE_STATE_UPDATE     0x03
#define ACPI_DESC_TYPE_STATE_PACKAGE    0x04
#define ACPI_DESC_TYPE_STATE_CONTROL    0x05
#define ACPI_DESC_TYPE_STATE_RPSCOPE    0x06
#define ACPI_DESC_TYPE_STATE_PSCOPE     0x07
#define ACPI_DESC_TYPE_STATE_WSCOPE     0x08
#define ACPI_DESC_TYPE_STATE_RESULT     0x09
#define ACPI_DESC_TYPE_STATE_NOTIFY     0x0A
#define ACPI_DESC_TYPE_STATE_THREAD     0x0B
#define ACPI_DESC_TYPE_WALK             0x0C
#define ACPI_DESC_TYPE_PARSER           0x0D
#define ACPI_DESC_TYPE_OPERAND          0x0E
#define ACPI_DESC_TYPE_NAMED            0x0F
#define ACPI_DESC_TYPE_MAX              0x0F


union acpi_descriptor
{
	u8                                      descriptor_id;  /* To differentiate various internal objs */\
	union acpi_operand_object               object;
	struct acpi_namespace_node              node;
	union acpi_parse_object                 op;
};


#endif /* _ACOBJECT_H */