xref: /linux/drivers/acpi/acpica/aclocal.h (revision d91517839e5d95adc0cf4b28caa7af62a71de526)
1 /******************************************************************************
2  *
3  * Name: aclocal.h - Internal data types used across the ACPI subsystem
4  *
5  *****************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2013, Intel Corp.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions, and the following disclaimer,
16  *    without modification.
17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18  *    substantially similar to the "NO WARRANTY" disclaimer below
19  *    ("Disclaimer") and any redistribution must be conditioned upon
20  *    including a substantially similar Disclaimer requirement for further
21  *    binary redistribution.
22  * 3. Neither the names of the above-listed copyright holders nor the names
23  *    of any contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * Alternatively, this software may be distributed under the terms of the
27  * GNU General Public License ("GPL") version 2 as published by the Free
28  * Software Foundation.
29  *
30  * NO WARRANTY
31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41  * POSSIBILITY OF SUCH DAMAGES.
42  */
43 
44 #ifndef __ACLOCAL_H__
45 #define __ACLOCAL_H__
46 
47 /* acpisrc:struct_defs -- for acpisrc conversion */
48 
49 #define ACPI_SERIALIZED                 0xFF
50 
51 typedef u32 acpi_mutex_handle;
52 #define ACPI_GLOBAL_LOCK                (acpi_semaphore) (-1)
53 
54 /* Total number of aml opcodes defined */
55 
56 #define AML_NUM_OPCODES                 0x81
57 
58 /* Forward declarations */
59 
60 struct acpi_walk_state;
61 struct acpi_obj_mutex;
62 union acpi_parse_object;
63 
64 /*****************************************************************************
65  *
66  * Mutex typedefs and structs
67  *
68  ****************************************************************************/
69 
70 /*
71  * Predefined handles for the mutex objects used within the subsystem
72  * All mutex objects are automatically created by acpi_ut_mutex_initialize.
73  *
74  * The acquire/release ordering protocol is implied via this list. Mutexes
75  * with a lower value must be acquired before mutexes with a higher value.
76  *
77  * NOTE: any changes here must be reflected in the acpi_gbl_mutex_names
78  * table below also!
79  */
80 #define ACPI_MTX_INTERPRETER            0	/* AML Interpreter, main lock */
81 #define ACPI_MTX_NAMESPACE              1	/* ACPI Namespace */
82 #define ACPI_MTX_TABLES                 2	/* Data for ACPI tables */
83 #define ACPI_MTX_EVENTS                 3	/* Data for ACPI events */
84 #define ACPI_MTX_CACHES                 4	/* Internal caches, general purposes */
85 #define ACPI_MTX_MEMORY                 5	/* Debug memory tracking lists */
86 #define ACPI_MTX_DEBUG_CMD_COMPLETE     6	/* AML debugger */
87 #define ACPI_MTX_DEBUG_CMD_READY        7	/* AML debugger */
88 
89 #define ACPI_MAX_MUTEX                  7
90 #define ACPI_NUM_MUTEX                  ACPI_MAX_MUTEX+1
91 
92 /* Lock structure for reader/writer interfaces */
93 
94 struct acpi_rw_lock {
95 	acpi_mutex writer_mutex;
96 	acpi_mutex reader_mutex;
97 	u32 num_readers;
98 };
99 
100 /*
101  * Predefined handles for spinlocks used within the subsystem.
102  * These spinlocks are created by acpi_ut_mutex_initialize
103  */
104 #define ACPI_LOCK_GPES                  0
105 #define ACPI_LOCK_HARDWARE              1
106 
107 #define ACPI_MAX_LOCK                   1
108 #define ACPI_NUM_LOCK                   ACPI_MAX_LOCK+1
109 
110 /* This Thread ID means that the mutex is not in use (unlocked) */
111 
112 #define ACPI_MUTEX_NOT_ACQUIRED         (acpi_thread_id) 0
113 
114 /* Table for the global mutexes */
115 
116 struct acpi_mutex_info {
117 	acpi_mutex mutex;
118 	u32 use_count;
119 	acpi_thread_id thread_id;
120 };
121 
122 /* Lock flag parameter for various interfaces */
123 
124 #define ACPI_MTX_DO_NOT_LOCK            0
125 #define ACPI_MTX_LOCK                   1
126 
127 /* Field access granularities */
128 
129 #define ACPI_FIELD_BYTE_GRANULARITY     1
130 #define ACPI_FIELD_WORD_GRANULARITY     2
131 #define ACPI_FIELD_DWORD_GRANULARITY    4
132 #define ACPI_FIELD_QWORD_GRANULARITY    8
133 
134 #define ACPI_ENTRY_NOT_FOUND            NULL
135 
136 /*****************************************************************************
137  *
138  * Namespace typedefs and structs
139  *
140  ****************************************************************************/
141 
142 /* Operational modes of the AML interpreter/scanner */
143 
144 typedef enum {
145 	ACPI_IMODE_LOAD_PASS1 = 0x01,
146 	ACPI_IMODE_LOAD_PASS2 = 0x02,
147 	ACPI_IMODE_EXECUTE = 0x03
148 } acpi_interpreter_mode;
149 
150 /*
151  * The Namespace Node describes a named object that appears in the AML.
152  * descriptor_type is used to differentiate between internal descriptors.
153  *
154  * The node is optimized for both 32-bit and 64-bit platforms:
155  * 20 bytes for the 32-bit case, 32 bytes for the 64-bit case.
156  *
157  * Note: The descriptor_type and Type fields must appear in the identical
158  * position in both the struct acpi_namespace_node and union acpi_operand_object
159  * structures.
160  */
161 struct acpi_namespace_node {
162 	union acpi_operand_object *object;	/* Interpreter object */
163 	u8 descriptor_type;	/* Differentiate object descriptor types */
164 	u8 type;		/* ACPI Type associated with this name */
165 	u8 flags;		/* Miscellaneous flags */
166 	acpi_owner_id owner_id;	/* Node creator */
167 	union acpi_name_union name;	/* ACPI Name, always 4 chars per ACPI spec */
168 	struct acpi_namespace_node *parent;	/* Parent node */
169 	struct acpi_namespace_node *child;	/* First child */
170 	struct acpi_namespace_node *peer;	/* First peer */
171 
172 	/*
173 	 * The following fields are used by the ASL compiler and disassembler only
174 	 */
175 #ifdef ACPI_LARGE_NAMESPACE_NODE
176 	union acpi_parse_object *op;
177 	u32 value;
178 	u32 length;
179 #endif
180 };
181 
182 /* Namespace Node flags */
183 
184 #define ANOBJ_RESERVED                  0x01	/* Available for use */
185 #define ANOBJ_TEMPORARY                 0x02	/* Node is create by a method and is temporary */
186 #define ANOBJ_METHOD_ARG                0x04	/* Node is a method argument */
187 #define ANOBJ_METHOD_LOCAL              0x08	/* Node is a method local */
188 #define ANOBJ_SUBTREE_HAS_INI           0x10	/* Used to optimize device initialization */
189 #define ANOBJ_EVALUATED                 0x20	/* Set on first evaluation of node */
190 #define ANOBJ_ALLOCATED_BUFFER          0x40	/* Method AML buffer is dynamic (install_method) */
191 
192 #define ANOBJ_IS_EXTERNAL               0x08	/* iASL only: This object created via External() */
193 #define ANOBJ_METHOD_NO_RETVAL          0x10	/* iASL only: Method has no return value */
194 #define ANOBJ_METHOD_SOME_NO_RETVAL     0x20	/* iASL only: Method has at least one return value */
195 #define ANOBJ_IS_REFERENCED             0x80	/* iASL only: Object was referenced */
196 
197 /* Internal ACPI table management - master table list */
198 
199 struct acpi_table_list {
200 	struct acpi_table_desc *tables;	/* Table descriptor array */
201 	u32 current_table_count;	/* Tables currently in the array */
202 	u32 max_table_count;	/* Max tables array will hold */
203 	u8 flags;
204 };
205 
206 /* Flags for above */
207 
208 #define ACPI_ROOT_ORIGIN_UNKNOWN        (0)	/* ~ORIGIN_ALLOCATED */
209 #define ACPI_ROOT_ORIGIN_ALLOCATED      (1)
210 #define ACPI_ROOT_ALLOW_RESIZE          (2)
211 
212 /* Predefined (fixed) table indexes */
213 
214 #define ACPI_TABLE_INDEX_DSDT           (0)
215 #define ACPI_TABLE_INDEX_FACS           (1)
216 
217 struct acpi_find_context {
218 	char *search_for;
219 	acpi_handle *list;
220 	u32 *count;
221 };
222 
223 struct acpi_ns_search_data {
224 	struct acpi_namespace_node *node;
225 };
226 
227 /* Object types used during package copies */
228 
229 #define ACPI_COPY_TYPE_SIMPLE           0
230 #define ACPI_COPY_TYPE_PACKAGE          1
231 
232 /* Info structure used to convert external<->internal namestrings */
233 
234 struct acpi_namestring_info {
235 	const char *external_name;
236 	const char *next_external_char;
237 	char *internal_name;
238 	u32 length;
239 	u32 num_segments;
240 	u32 num_carats;
241 	u8 fully_qualified;
242 };
243 
244 /* Field creation info */
245 
246 struct acpi_create_field_info {
247 	struct acpi_namespace_node *region_node;
248 	struct acpi_namespace_node *field_node;
249 	struct acpi_namespace_node *register_node;
250 	struct acpi_namespace_node *data_register_node;
251 	struct acpi_namespace_node *connection_node;
252 	u8 *resource_buffer;
253 	u32 bank_value;
254 	u32 field_bit_position;
255 	u32 field_bit_length;
256 	u16 resource_length;
257 	u8 field_flags;
258 	u8 attribute;
259 	u8 field_type;
260 	u8 access_length;
261 };
262 
263 typedef
264 acpi_status(*acpi_internal_method) (struct acpi_walk_state * walk_state);
265 
266 /*
267  * Bitmapped ACPI types. Used internally only
268  */
269 #define ACPI_BTYPE_ANY                  0x00000000
270 #define ACPI_BTYPE_INTEGER              0x00000001
271 #define ACPI_BTYPE_STRING               0x00000002
272 #define ACPI_BTYPE_BUFFER               0x00000004
273 #define ACPI_BTYPE_PACKAGE              0x00000008
274 #define ACPI_BTYPE_FIELD_UNIT           0x00000010
275 #define ACPI_BTYPE_DEVICE               0x00000020
276 #define ACPI_BTYPE_EVENT                0x00000040
277 #define ACPI_BTYPE_METHOD               0x00000080
278 #define ACPI_BTYPE_MUTEX                0x00000100
279 #define ACPI_BTYPE_REGION               0x00000200
280 #define ACPI_BTYPE_POWER                0x00000400
281 #define ACPI_BTYPE_PROCESSOR            0x00000800
282 #define ACPI_BTYPE_THERMAL              0x00001000
283 #define ACPI_BTYPE_BUFFER_FIELD         0x00002000
284 #define ACPI_BTYPE_DDB_HANDLE           0x00004000
285 #define ACPI_BTYPE_DEBUG_OBJECT         0x00008000
286 #define ACPI_BTYPE_REFERENCE            0x00010000
287 #define ACPI_BTYPE_RESOURCE             0x00020000
288 
289 #define ACPI_BTYPE_COMPUTE_DATA         (ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER)
290 
291 #define ACPI_BTYPE_DATA                 (ACPI_BTYPE_COMPUTE_DATA  | ACPI_BTYPE_PACKAGE)
292 #define ACPI_BTYPE_DATA_REFERENCE       (ACPI_BTYPE_DATA | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE)
293 #define ACPI_BTYPE_DEVICE_OBJECTS       (ACPI_BTYPE_DEVICE | ACPI_BTYPE_THERMAL | ACPI_BTYPE_PROCESSOR)
294 #define ACPI_BTYPE_OBJECTS_AND_REFS     0x0001FFFF	/* ARG or LOCAL */
295 #define ACPI_BTYPE_ALL_OBJECTS          0x0000FFFF
296 
297 #pragma pack(1)
298 
299 /*
300  * Information structure for ACPI predefined names.
301  * Each entry in the table contains the following items:
302  *
303  * name                 - The ACPI reserved name
304  * param_count          - Number of arguments to the method
305  * expected_return_btypes - Allowed type(s) for the return value
306  */
307 struct acpi_name_info {
308 	char name[ACPI_NAME_SIZE];
309 	u16 argument_list;
310 	u8 expected_btypes;
311 };
312 
313 /*
314  * Secondary information structures for ACPI predefined objects that return
315  * package objects. This structure appears as the next entry in the table
316  * after the NAME_INFO structure above.
317  *
318  * The reason for this is to minimize the size of the predefined name table.
319  */
320 
321 /*
322  * Used for ACPI_PTYPE1_FIXED, ACPI_PTYPE1_VAR, ACPI_PTYPE2,
323  * ACPI_PTYPE2_MIN, ACPI_PTYPE2_PKG_COUNT, ACPI_PTYPE2_COUNT,
324  * ACPI_PTYPE2_FIX_VAR
325  */
326 struct acpi_package_info {
327 	u8 type;
328 	u8 object_type1;
329 	u8 count1;
330 	u8 object_type2;
331 	u8 count2;
332 	u16 reserved;
333 };
334 
335 /* Used for ACPI_PTYPE2_FIXED */
336 
337 struct acpi_package_info2 {
338 	u8 type;
339 	u8 count;
340 	u8 object_type[4];
341 	u8 reserved;
342 };
343 
344 /* Used for ACPI_PTYPE1_OPTION */
345 
346 struct acpi_package_info3 {
347 	u8 type;
348 	u8 count;
349 	u8 object_type[2];
350 	u8 tail_object_type;
351 	u16 reserved;
352 };
353 
354 union acpi_predefined_info {
355 	struct acpi_name_info info;
356 	struct acpi_package_info ret_info;
357 	struct acpi_package_info2 ret_info2;
358 	struct acpi_package_info3 ret_info3;
359 };
360 
361 /* Reset to default packing */
362 
363 #pragma pack()
364 
365 /* Return object auto-repair info */
366 
367 typedef acpi_status(*acpi_object_converter) (union acpi_operand_object
368 					     *original_object,
369 					     union acpi_operand_object
370 					     **converted_object);
371 
372 struct acpi_simple_repair_info {
373 	char name[ACPI_NAME_SIZE];
374 	u32 unexpected_btypes;
375 	u32 package_index;
376 	acpi_object_converter object_converter;
377 };
378 
379 /*
380  * Bitmapped return value types
381  * Note: the actual data types must be contiguous, a loop in nspredef.c
382  * depends on this.
383  */
384 #define ACPI_RTYPE_ANY                  0x00
385 #define ACPI_RTYPE_NONE                 0x01
386 #define ACPI_RTYPE_INTEGER              0x02
387 #define ACPI_RTYPE_STRING               0x04
388 #define ACPI_RTYPE_BUFFER               0x08
389 #define ACPI_RTYPE_PACKAGE              0x10
390 #define ACPI_RTYPE_REFERENCE            0x20
391 #define ACPI_RTYPE_ALL                  0x3F
392 
393 #define ACPI_NUM_RTYPES                 5	/* Number of actual object types */
394 
395 /*****************************************************************************
396  *
397  * Event typedefs and structs
398  *
399  ****************************************************************************/
400 
401 /* Dispatch info for each host-installed SCI handler */
402 
403 struct acpi_sci_handler_info {
404 	struct acpi_sci_handler_info *next;
405 	acpi_sci_handler address;	/* Address of handler */
406 	void *context;		/* Context to be passed to handler */
407 };
408 
409 /* Dispatch info for each GPE -- either a method or handler, cannot be both */
410 
411 struct acpi_gpe_handler_info {
412 	acpi_gpe_handler address;	/* Address of handler, if any */
413 	void *context;		/* Context to be passed to handler */
414 	struct acpi_namespace_node *method_node;	/* Method node for this GPE level (saved) */
415 	u8 original_flags;      /* Original (pre-handler) GPE info */
416 	u8 originally_enabled;  /* True if GPE was originally enabled */
417 };
418 
419 /* Notify info for implicit notify, multiple device objects */
420 
421 struct acpi_gpe_notify_info {
422 	struct acpi_namespace_node *device_node;	/* Device to be notified */
423 	struct acpi_gpe_notify_info *next;
424 };
425 
426 /*
427  * GPE dispatch info. At any time, the GPE can have at most one type
428  * of dispatch - Method, Handler, or Implicit Notify.
429  */
430 union acpi_gpe_dispatch_info {
431 	struct acpi_namespace_node *method_node;	/* Method node for this GPE level */
432 	struct acpi_gpe_handler_info *handler;  /* Installed GPE handler */
433 	struct acpi_gpe_notify_info *notify_list;	/* List of _PRW devices for implicit notifies */
434 };
435 
436 /*
437  * Information about a GPE, one per each GPE in an array.
438  * NOTE: Important to keep this struct as small as possible.
439  */
440 struct acpi_gpe_event_info {
441 	union acpi_gpe_dispatch_info dispatch;	/* Either Method, Handler, or notify_list */
442 	struct acpi_gpe_register_info *register_info;	/* Backpointer to register info */
443 	u8 flags;		/* Misc info about this GPE */
444 	u8 gpe_number;		/* This GPE */
445 	u8 runtime_count;	/* References to a run GPE */
446 };
447 
448 /* Information about a GPE register pair, one per each status/enable pair in an array */
449 
450 struct acpi_gpe_register_info {
451 	struct acpi_generic_address status_address;	/* Address of status reg */
452 	struct acpi_generic_address enable_address;	/* Address of enable reg */
453 	u8 enable_for_wake;	/* GPEs to keep enabled when sleeping */
454 	u8 enable_for_run;	/* GPEs to keep enabled when running */
455 	u8 base_gpe_number;	/* Base GPE number for this register */
456 };
457 
458 /*
459  * Information about a GPE register block, one per each installed block --
460  * GPE0, GPE1, and one per each installed GPE Block Device.
461  */
462 struct acpi_gpe_block_info {
463 	struct acpi_namespace_node *node;
464 	struct acpi_gpe_block_info *previous;
465 	struct acpi_gpe_block_info *next;
466 	struct acpi_gpe_xrupt_info *xrupt_block;	/* Backpointer to interrupt block */
467 	struct acpi_gpe_register_info *register_info;	/* One per GPE register pair */
468 	struct acpi_gpe_event_info *event_info;	/* One for each GPE */
469 	struct acpi_generic_address block_address;	/* Base address of the block */
470 	u32 register_count;	/* Number of register pairs in block */
471 	u16 gpe_count;		/* Number of individual GPEs in block */
472 	u8 block_base_number;	/* Base GPE number for this block */
473 	u8 initialized;         /* TRUE if this block is initialized */
474 };
475 
476 /* Information about GPE interrupt handlers, one per each interrupt level used for GPEs */
477 
478 struct acpi_gpe_xrupt_info {
479 	struct acpi_gpe_xrupt_info *previous;
480 	struct acpi_gpe_xrupt_info *next;
481 	struct acpi_gpe_block_info *gpe_block_list_head;	/* List of GPE blocks for this xrupt */
482 	u32 interrupt_number;	/* System interrupt number */
483 };
484 
485 struct acpi_gpe_walk_info {
486 	struct acpi_namespace_node *gpe_device;
487 	struct acpi_gpe_block_info *gpe_block;
488 	u16 count;
489 	acpi_owner_id owner_id;
490 	u8 execute_by_owner_id;
491 };
492 
493 struct acpi_gpe_device_info {
494 	u32 index;
495 	u32 next_block_base_index;
496 	acpi_status status;
497 	struct acpi_namespace_node *gpe_device;
498 };
499 
500 typedef acpi_status(*acpi_gpe_callback) (struct acpi_gpe_xrupt_info *
501 					 gpe_xrupt_info,
502 					 struct acpi_gpe_block_info *gpe_block,
503 					 void *context);
504 
505 /* Information about each particular fixed event */
506 
507 struct acpi_fixed_event_handler {
508 	acpi_event_handler handler;	/* Address of handler. */
509 	void *context;		/* Context to be passed to handler */
510 };
511 
512 struct acpi_fixed_event_info {
513 	u8 status_register_id;
514 	u8 enable_register_id;
515 	u16 status_bit_mask;
516 	u16 enable_bit_mask;
517 };
518 
519 /* Information used during field processing */
520 
521 struct acpi_field_info {
522 	u8 skip_field;
523 	u8 field_flag;
524 	u32 pkg_length;
525 };
526 
527 /*****************************************************************************
528  *
529  * Generic "state" object for stacks
530  *
531  ****************************************************************************/
532 
533 #define ACPI_CONTROL_NORMAL                  0xC0
534 #define ACPI_CONTROL_CONDITIONAL_EXECUTING   0xC1
535 #define ACPI_CONTROL_PREDICATE_EXECUTING     0xC2
536 #define ACPI_CONTROL_PREDICATE_FALSE         0xC3
537 #define ACPI_CONTROL_PREDICATE_TRUE          0xC4
538 
539 #define ACPI_STATE_COMMON \
540 	void                            *next; \
541 	u8                              descriptor_type; /* To differentiate various internal objs */\
542 	u8                              flags; \
543 	u16                             value; \
544 	u16                             state;
545 
546 	/* There are 2 bytes available here until the next natural alignment boundary */
547 
548 struct acpi_common_state {
549 ACPI_STATE_COMMON};
550 
551 /*
552  * Update state - used to traverse complex objects such as packages
553  */
554 struct acpi_update_state {
555 	ACPI_STATE_COMMON union acpi_operand_object *object;
556 };
557 
558 /*
559  * Pkg state - used to traverse nested package structures
560  */
561 struct acpi_pkg_state {
562 	ACPI_STATE_COMMON u16 index;
563 	union acpi_operand_object *source_object;
564 	union acpi_operand_object *dest_object;
565 	struct acpi_walk_state *walk_state;
566 	void *this_target_obj;
567 	u32 num_packages;
568 };
569 
570 /*
571  * Control state - one per if/else and while constructs.
572  * Allows nesting of these constructs
573  */
574 struct acpi_control_state {
575 	ACPI_STATE_COMMON u16 opcode;
576 	union acpi_parse_object *predicate_op;
577 	u8 *aml_predicate_start;	/* Start of if/while predicate */
578 	u8 *package_end;	/* End of if/while block */
579 	u32 loop_count;		/* While() loop counter */
580 };
581 
582 /*
583  * Scope state - current scope during namespace lookups
584  */
585 struct acpi_scope_state {
586 	ACPI_STATE_COMMON struct acpi_namespace_node *node;
587 };
588 
589 struct acpi_pscope_state {
590 	ACPI_STATE_COMMON u32 arg_count;	/* Number of fixed arguments */
591 	union acpi_parse_object *op;	/* Current op being parsed */
592 	u8 *arg_end;		/* Current argument end */
593 	u8 *pkg_end;		/* Current package end */
594 	u32 arg_list;		/* Next argument to parse */
595 };
596 
597 /*
598  * Thread state - one per thread across multiple walk states. Multiple walk
599  * states are created when there are nested control methods executing.
600  */
601 struct acpi_thread_state {
602 	ACPI_STATE_COMMON u8 current_sync_level;	/* Mutex Sync (nested acquire) level */
603 	struct acpi_walk_state *walk_state_list;	/* Head of list of walk_states for this thread */
604 	union acpi_operand_object *acquired_mutex_list;	/* List of all currently acquired mutexes */
605 	acpi_thread_id thread_id;	/* Running thread ID */
606 };
607 
608 /*
609  * Result values - used to accumulate the results of nested
610  * AML arguments
611  */
612 struct acpi_result_values {
613 	ACPI_STATE_COMMON
614 	    union acpi_operand_object *obj_desc[ACPI_RESULTS_FRAME_OBJ_NUM];
615 };
616 
617 typedef
618 acpi_status(*acpi_parse_downwards) (struct acpi_walk_state * walk_state,
619 				    union acpi_parse_object ** out_op);
620 
621 typedef acpi_status(*acpi_parse_upwards) (struct acpi_walk_state * walk_state);
622 
623 /* Global handlers for AML Notifies */
624 
625 struct acpi_global_notify_handler {
626 	acpi_notify_handler handler;
627 	void *context;
628 };
629 
630 /*
631  * Notify info - used to pass info to the deferred notify
632  * handler/dispatcher.
633  */
634 struct acpi_notify_info {
635 	ACPI_STATE_COMMON u8 handler_list_id;
636 	struct acpi_namespace_node *node;
637 	union acpi_operand_object *handler_list_head;
638 	struct acpi_global_notify_handler *global;
639 };
640 
641 /* Generic state is union of structs above */
642 
643 union acpi_generic_state {
644 	struct acpi_common_state common;
645 	struct acpi_control_state control;
646 	struct acpi_update_state update;
647 	struct acpi_scope_state scope;
648 	struct acpi_pscope_state parse_scope;
649 	struct acpi_pkg_state pkg;
650 	struct acpi_thread_state thread;
651 	struct acpi_result_values results;
652 	struct acpi_notify_info notify;
653 };
654 
655 /*****************************************************************************
656  *
657  * Interpreter typedefs and structs
658  *
659  ****************************************************************************/
660 
661 typedef acpi_status(*acpi_execute_op) (struct acpi_walk_state * walk_state);
662 
663 /* Address Range info block */
664 
665 struct acpi_address_range {
666 	struct acpi_address_range *next;
667 	struct acpi_namespace_node *region_node;
668 	acpi_physical_address start_address;
669 	acpi_physical_address end_address;
670 };
671 
672 /*****************************************************************************
673  *
674  * Parser typedefs and structs
675  *
676  ****************************************************************************/
677 
678 /*
679  * AML opcode, name, and argument layout
680  */
681 struct acpi_opcode_info {
682 #if defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUG_OUTPUT)
683 	char *name;		/* Opcode name (disassembler/debug only) */
684 #endif
685 	u32 parse_args;		/* Grammar/Parse time arguments */
686 	u32 runtime_args;	/* Interpret time arguments */
687 	u16 flags;		/* Misc flags */
688 	u8 object_type;		/* Corresponding internal object type */
689 	u8 class;		/* Opcode class */
690 	u8 type;		/* Opcode type */
691 };
692 
693 /* Value associated with the parse object */
694 
695 union acpi_parse_value {
696 	u64 integer;		/* Integer constant (Up to 64 bits) */
697 	u32 size;		/* bytelist or field size */
698 	char *string;		/* NULL terminated string */
699 	u8 *buffer;		/* buffer or string */
700 	char *name;		/* NULL terminated string */
701 	union acpi_parse_object *arg;	/* arguments and contained ops */
702 };
703 
704 #ifdef ACPI_DISASSEMBLER
705 #define ACPI_DISASM_ONLY_MEMBERS(a)     a;
706 #else
707 #define ACPI_DISASM_ONLY_MEMBERS(a)
708 #endif
709 
710 #define ACPI_PARSE_COMMON \
711 	union acpi_parse_object         *parent;        /* Parent op */\
712 	u8                              descriptor_type; /* To differentiate various internal objs */\
713 	u8                              flags;          /* Type of Op */\
714 	u16                             aml_opcode;     /* AML opcode */\
715 	u32                             aml_offset;     /* Offset of declaration in AML */\
716 	union acpi_parse_object         *next;          /* Next op */\
717 	struct acpi_namespace_node      *node;          /* For use by interpreter */\
718 	union acpi_parse_value          value;          /* Value or args associated with the opcode */\
719 	u8                              arg_list_length; /* Number of elements in the arg list */\
720 	ACPI_DISASM_ONLY_MEMBERS (\
721 	u8                              disasm_flags;   /* Used during AML disassembly */\
722 	u8                              disasm_opcode;  /* Subtype used for disassembly */\
723 	char                            aml_op_name[16])	/* Op name (debug only) */
724 
725 /* Flags for disasm_flags field above */
726 
727 #define ACPI_DASM_BUFFER                0x00	/* Buffer is a simple data buffer */
728 #define ACPI_DASM_RESOURCE              0x01	/* Buffer is a Resource Descriptor */
729 #define ACPI_DASM_STRING                0x02	/* Buffer is a ASCII string */
730 #define ACPI_DASM_UNICODE               0x03	/* Buffer is a Unicode string */
731 #define ACPI_DASM_PLD_METHOD            0x04	/* Buffer is a _PLD method bit-packed buffer */
732 #define ACPI_DASM_EISAID                0x05	/* Integer is an EISAID */
733 #define ACPI_DASM_MATCHOP               0x06	/* Parent opcode is a Match() operator */
734 #define ACPI_DASM_LNOT_PREFIX           0x07	/* Start of a Lnot_equal (etc.) pair of opcodes */
735 #define ACPI_DASM_LNOT_SUFFIX           0x08	/* End  of a Lnot_equal (etc.) pair of opcodes */
736 #define ACPI_DASM_IGNORE                0x09	/* Not used at this time */
737 
738 /*
739  * Generic operation (for example:  If, While, Store)
740  */
741 struct acpi_parse_obj_common {
742 ACPI_PARSE_COMMON};
743 
744 /*
745  * Extended Op for named ops (Scope, Method, etc.), deferred ops (Methods and op_regions),
746  * and bytelists.
747  */
748 struct acpi_parse_obj_named {
749 	ACPI_PARSE_COMMON u8 *path;
750 	u8 *data;		/* AML body or bytelist data */
751 	u32 length;		/* AML length */
752 	u32 name;		/* 4-byte name or zero if no name */
753 };
754 
755 /* This version is used by the iASL compiler only */
756 
757 #define ACPI_MAX_PARSEOP_NAME   20
758 
759 struct acpi_parse_obj_asl {
760 	ACPI_PARSE_COMMON union acpi_parse_object *child;
761 	union acpi_parse_object *parent_method;
762 	char *filename;
763 	char *external_name;
764 	char *namepath;
765 	char name_seg[4];
766 	u32 extra_value;
767 	u32 column;
768 	u32 line_number;
769 	u32 logical_line_number;
770 	u32 logical_byte_offset;
771 	u32 end_line;
772 	u32 end_logical_line;
773 	u32 acpi_btype;
774 	u32 aml_length;
775 	u32 aml_subtree_length;
776 	u32 final_aml_length;
777 	u32 final_aml_offset;
778 	u32 compile_flags;
779 	u16 parse_opcode;
780 	u8 aml_opcode_length;
781 	u8 aml_pkg_len_bytes;
782 	u8 extra;
783 	char parse_op_name[ACPI_MAX_PARSEOP_NAME];
784 };
785 
786 union acpi_parse_object {
787 	struct acpi_parse_obj_common common;
788 	struct acpi_parse_obj_named named;
789 	struct acpi_parse_obj_asl asl;
790 };
791 
792 /*
793  * Parse state - one state per parser invocation and each control
794  * method.
795  */
796 struct acpi_parse_state {
797 	u8 *aml_start;		/* First AML byte */
798 	u8 *aml;		/* Next AML byte */
799 	u8 *aml_end;		/* (last + 1) AML byte */
800 	u8 *pkg_start;		/* Current package begin */
801 	u8 *pkg_end;		/* Current package end */
802 	union acpi_parse_object *start_op;	/* Root of parse tree */
803 	struct acpi_namespace_node *start_node;
804 	union acpi_generic_state *scope;	/* Current scope */
805 	union acpi_parse_object *start_scope;
806 	u32 aml_size;
807 };
808 
809 /* Parse object flags */
810 
811 #define ACPI_PARSEOP_GENERIC            0x01
812 #define ACPI_PARSEOP_NAMED              0x02
813 #define ACPI_PARSEOP_DEFERRED           0x04
814 #define ACPI_PARSEOP_BYTELIST           0x08
815 #define ACPI_PARSEOP_IN_STACK           0x10
816 #define ACPI_PARSEOP_TARGET             0x20
817 #define ACPI_PARSEOP_IN_CACHE           0x80
818 
819 /* Parse object disasm_flags */
820 
821 #define ACPI_PARSEOP_IGNORE             0x01
822 #define ACPI_PARSEOP_PARAMLIST          0x02
823 #define ACPI_PARSEOP_EMPTY_TERMLIST     0x04
824 #define ACPI_PARSEOP_PREDEF_CHECKED     0x08
825 #define ACPI_PARSEOP_SPECIAL            0x10
826 
827 /*****************************************************************************
828  *
829  * Hardware (ACPI registers) and PNP
830  *
831  ****************************************************************************/
832 
833 struct acpi_bit_register_info {
834 	u8 parent_register;
835 	u8 bit_position;
836 	u16 access_bit_mask;
837 };
838 
839 /*
840  * Some ACPI registers have bits that must be ignored -- meaning that they
841  * must be preserved.
842  */
843 #define ACPI_PM1_STATUS_PRESERVED_BITS          0x0800	/* Bit 11 */
844 
845 /* Write-only bits must be zeroed by software */
846 
847 #define ACPI_PM1_CONTROL_WRITEONLY_BITS         0x2004	/* Bits 13, 2 */
848 
849 /* For control registers, both ignored and reserved bits must be preserved */
850 
851 /*
852  * For PM1 control, the SCI enable bit (bit 0, SCI_EN) is defined by the
853  * ACPI specification to be a "preserved" bit - "OSPM always preserves this
854  * bit position", section 4.7.3.2.1. However, on some machines the OS must
855  * write a one to this bit after resume for the machine to work properly.
856  * To enable this, we no longer attempt to preserve this bit. No machines
857  * are known to fail if the bit is not preserved. (May 2009)
858  */
859 #define ACPI_PM1_CONTROL_IGNORED_BITS           0x0200	/* Bit 9 */
860 #define ACPI_PM1_CONTROL_RESERVED_BITS          0xC1F8	/* Bits 14-15, 3-8 */
861 #define ACPI_PM1_CONTROL_PRESERVED_BITS \
862 	       (ACPI_PM1_CONTROL_IGNORED_BITS | ACPI_PM1_CONTROL_RESERVED_BITS)
863 
864 #define ACPI_PM2_CONTROL_PRESERVED_BITS         0xFFFFFFFE	/* All except bit 0 */
865 
866 /*
867  * Register IDs
868  * These are the full ACPI registers
869  */
870 #define ACPI_REGISTER_PM1_STATUS                0x01
871 #define ACPI_REGISTER_PM1_ENABLE                0x02
872 #define ACPI_REGISTER_PM1_CONTROL               0x03
873 #define ACPI_REGISTER_PM2_CONTROL               0x04
874 #define ACPI_REGISTER_PM_TIMER                  0x05
875 #define ACPI_REGISTER_PROCESSOR_BLOCK           0x06
876 #define ACPI_REGISTER_SMI_COMMAND_BLOCK         0x07
877 
878 /* Masks used to access the bit_registers */
879 
880 #define ACPI_BITMASK_TIMER_STATUS               0x0001
881 #define ACPI_BITMASK_BUS_MASTER_STATUS          0x0010
882 #define ACPI_BITMASK_GLOBAL_LOCK_STATUS         0x0020
883 #define ACPI_BITMASK_POWER_BUTTON_STATUS        0x0100
884 #define ACPI_BITMASK_SLEEP_BUTTON_STATUS        0x0200
885 #define ACPI_BITMASK_RT_CLOCK_STATUS            0x0400
886 #define ACPI_BITMASK_PCIEXP_WAKE_STATUS         0x4000	/* ACPI 3.0 */
887 #define ACPI_BITMASK_WAKE_STATUS                0x8000
888 
889 #define ACPI_BITMASK_ALL_FIXED_STATUS           (\
890 	ACPI_BITMASK_TIMER_STATUS          | \
891 	ACPI_BITMASK_BUS_MASTER_STATUS     | \
892 	ACPI_BITMASK_GLOBAL_LOCK_STATUS    | \
893 	ACPI_BITMASK_POWER_BUTTON_STATUS   | \
894 	ACPI_BITMASK_SLEEP_BUTTON_STATUS   | \
895 	ACPI_BITMASK_RT_CLOCK_STATUS       | \
896 	ACPI_BITMASK_PCIEXP_WAKE_STATUS    | \
897 	ACPI_BITMASK_WAKE_STATUS)
898 
899 #define ACPI_BITMASK_TIMER_ENABLE               0x0001
900 #define ACPI_BITMASK_GLOBAL_LOCK_ENABLE         0x0020
901 #define ACPI_BITMASK_POWER_BUTTON_ENABLE        0x0100
902 #define ACPI_BITMASK_SLEEP_BUTTON_ENABLE        0x0200
903 #define ACPI_BITMASK_RT_CLOCK_ENABLE            0x0400
904 #define ACPI_BITMASK_PCIEXP_WAKE_DISABLE        0x4000	/* ACPI 3.0 */
905 
906 #define ACPI_BITMASK_SCI_ENABLE                 0x0001
907 #define ACPI_BITMASK_BUS_MASTER_RLD             0x0002
908 #define ACPI_BITMASK_GLOBAL_LOCK_RELEASE        0x0004
909 #define ACPI_BITMASK_SLEEP_TYPE                 0x1C00
910 #define ACPI_BITMASK_SLEEP_ENABLE               0x2000
911 
912 #define ACPI_BITMASK_ARB_DISABLE                0x0001
913 
914 /* Raw bit position of each bit_register */
915 
916 #define ACPI_BITPOSITION_TIMER_STATUS           0x00
917 #define ACPI_BITPOSITION_BUS_MASTER_STATUS      0x04
918 #define ACPI_BITPOSITION_GLOBAL_LOCK_STATUS     0x05
919 #define ACPI_BITPOSITION_POWER_BUTTON_STATUS    0x08
920 #define ACPI_BITPOSITION_SLEEP_BUTTON_STATUS    0x09
921 #define ACPI_BITPOSITION_RT_CLOCK_STATUS        0x0A
922 #define ACPI_BITPOSITION_PCIEXP_WAKE_STATUS     0x0E	/* ACPI 3.0 */
923 #define ACPI_BITPOSITION_WAKE_STATUS            0x0F
924 
925 #define ACPI_BITPOSITION_TIMER_ENABLE           0x00
926 #define ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE     0x05
927 #define ACPI_BITPOSITION_POWER_BUTTON_ENABLE    0x08
928 #define ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE    0x09
929 #define ACPI_BITPOSITION_RT_CLOCK_ENABLE        0x0A
930 #define ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE    0x0E	/* ACPI 3.0 */
931 
932 #define ACPI_BITPOSITION_SCI_ENABLE             0x00
933 #define ACPI_BITPOSITION_BUS_MASTER_RLD         0x01
934 #define ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE    0x02
935 #define ACPI_BITPOSITION_SLEEP_TYPE             0x0A
936 #define ACPI_BITPOSITION_SLEEP_ENABLE           0x0D
937 
938 #define ACPI_BITPOSITION_ARB_DISABLE            0x00
939 
940 /* Structs and definitions for _OSI support and I/O port validation */
941 
942 #define ACPI_ALWAYS_ILLEGAL             0x00
943 
944 struct acpi_interface_info {
945 	char *name;
946 	struct acpi_interface_info *next;
947 	u8 flags;
948 	u8 value;
949 };
950 
951 #define ACPI_OSI_INVALID                0x01
952 #define ACPI_OSI_DYNAMIC                0x02
953 #define ACPI_OSI_FEATURE                0x04
954 #define ACPI_OSI_DEFAULT_INVALID        0x08
955 #define ACPI_OSI_OPTIONAL_FEATURE       (ACPI_OSI_FEATURE | ACPI_OSI_DEFAULT_INVALID | ACPI_OSI_INVALID)
956 
957 struct acpi_port_info {
958 	char *name;
959 	u16 start;
960 	u16 end;
961 	u8 osi_dependency;
962 };
963 
964 /*****************************************************************************
965  *
966  * Resource descriptors
967  *
968  ****************************************************************************/
969 
970 /* resource_type values */
971 
972 #define ACPI_ADDRESS_TYPE_MEMORY_RANGE          0
973 #define ACPI_ADDRESS_TYPE_IO_RANGE              1
974 #define ACPI_ADDRESS_TYPE_BUS_NUMBER_RANGE      2
975 
976 /* Resource descriptor types and masks */
977 
978 #define ACPI_RESOURCE_NAME_LARGE                0x80
979 #define ACPI_RESOURCE_NAME_SMALL                0x00
980 
981 #define ACPI_RESOURCE_NAME_SMALL_MASK           0x78	/* Bits 6:3 contain the type */
982 #define ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK    0x07	/* Bits 2:0 contain the length */
983 #define ACPI_RESOURCE_NAME_LARGE_MASK           0x7F	/* Bits 6:0 contain the type */
984 
985 /*
986  * Small resource descriptor "names" as defined by the ACPI specification.
987  * Note: Bits 2:0 are used for the descriptor length
988  */
989 #define ACPI_RESOURCE_NAME_IRQ                  0x20
990 #define ACPI_RESOURCE_NAME_DMA                  0x28
991 #define ACPI_RESOURCE_NAME_START_DEPENDENT      0x30
992 #define ACPI_RESOURCE_NAME_END_DEPENDENT        0x38
993 #define ACPI_RESOURCE_NAME_IO                   0x40
994 #define ACPI_RESOURCE_NAME_FIXED_IO             0x48
995 #define ACPI_RESOURCE_NAME_FIXED_DMA            0x50
996 #define ACPI_RESOURCE_NAME_RESERVED_S2          0x58
997 #define ACPI_RESOURCE_NAME_RESERVED_S3          0x60
998 #define ACPI_RESOURCE_NAME_RESERVED_S4          0x68
999 #define ACPI_RESOURCE_NAME_VENDOR_SMALL         0x70
1000 #define ACPI_RESOURCE_NAME_END_TAG              0x78
1001 
1002 /*
1003  * Large resource descriptor "names" as defined by the ACPI specification.
1004  * Note: includes the Large Descriptor bit in bit[7]
1005  */
1006 #define ACPI_RESOURCE_NAME_MEMORY24             0x81
1007 #define ACPI_RESOURCE_NAME_GENERIC_REGISTER     0x82
1008 #define ACPI_RESOURCE_NAME_RESERVED_L1          0x83
1009 #define ACPI_RESOURCE_NAME_VENDOR_LARGE         0x84
1010 #define ACPI_RESOURCE_NAME_MEMORY32             0x85
1011 #define ACPI_RESOURCE_NAME_FIXED_MEMORY32       0x86
1012 #define ACPI_RESOURCE_NAME_ADDRESS32            0x87
1013 #define ACPI_RESOURCE_NAME_ADDRESS16            0x88
1014 #define ACPI_RESOURCE_NAME_EXTENDED_IRQ         0x89
1015 #define ACPI_RESOURCE_NAME_ADDRESS64            0x8A
1016 #define ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64   0x8B
1017 #define ACPI_RESOURCE_NAME_GPIO                 0x8C
1018 #define ACPI_RESOURCE_NAME_SERIAL_BUS           0x8E
1019 #define ACPI_RESOURCE_NAME_LARGE_MAX            0x8E
1020 
1021 /*****************************************************************************
1022  *
1023  * Miscellaneous
1024  *
1025  ****************************************************************************/
1026 
1027 #define ACPI_ASCII_ZERO                 0x30
1028 
1029 /*****************************************************************************
1030  *
1031  * Disassembler
1032  *
1033  ****************************************************************************/
1034 
1035 struct acpi_external_list {
1036 	char *path;
1037 	char *internal_path;
1038 	struct acpi_external_list *next;
1039 	u32 value;
1040 	u16 length;
1041 	u16 flags;
1042 	u8 type;
1043 };
1044 
1045 /* Values for Flags field above */
1046 
1047 #define ACPI_EXT_RESOLVED_REFERENCE         0x01	/* Object was resolved during cross ref */
1048 #define ACPI_EXT_ORIGIN_FROM_FILE           0x02	/* External came from a file */
1049 #define ACPI_EXT_INTERNAL_PATH_ALLOCATED    0x04	/* Deallocate internal path on completion */
1050 #define ACPI_EXT_EXTERNAL_EMITTED           0x08	/* External() statement has been emitted */
1051 
1052 struct acpi_external_file {
1053 	char *path;
1054 	struct acpi_external_file *next;
1055 };
1056 
1057 /*****************************************************************************
1058  *
1059  * Debugger
1060  *
1061  ****************************************************************************/
1062 
1063 struct acpi_db_method_info {
1064 	acpi_handle method;
1065 	acpi_handle main_thread_gate;
1066 	acpi_handle thread_complete_gate;
1067 	acpi_handle info_gate;
1068 	acpi_thread_id *threads;
1069 	u32 num_threads;
1070 	u32 num_created;
1071 	u32 num_completed;
1072 
1073 	char *name;
1074 	u32 flags;
1075 	u32 num_loops;
1076 	char pathname[ACPI_DB_LINE_BUFFER_SIZE];
1077 	char **args;
1078 	acpi_object_type *types;
1079 
1080 	/*
1081 	 * Arguments to be passed to method for the command
1082 	 * Threads -
1083 	 *   the Number of threads, ID of current thread and
1084 	 *   Index of current thread inside all them created.
1085 	 */
1086 	char init_args;
1087 	char *arguments[4];
1088 	char num_threads_str[11];
1089 	char id_of_thread_str[11];
1090 	char index_of_thread_str[11];
1091 };
1092 
1093 struct acpi_integrity_info {
1094 	u32 nodes;
1095 	u32 objects;
1096 };
1097 
1098 #define ACPI_DB_DISABLE_OUTPUT          0x00
1099 #define ACPI_DB_REDIRECTABLE_OUTPUT     0x01
1100 #define ACPI_DB_CONSOLE_OUTPUT          0x02
1101 #define ACPI_DB_DUPLICATE_OUTPUT        0x03
1102 
1103 /*****************************************************************************
1104  *
1105  * Debug
1106  *
1107  ****************************************************************************/
1108 
1109 /* Entry for a memory allocation (debug only) */
1110 
1111 #define ACPI_MEM_MALLOC                 0
1112 #define ACPI_MEM_CALLOC                 1
1113 #define ACPI_MAX_MODULE_NAME            16
1114 
1115 #define ACPI_COMMON_DEBUG_MEM_HEADER \
1116 	struct acpi_debug_mem_block     *previous; \
1117 	struct acpi_debug_mem_block     *next; \
1118 	u32                             size; \
1119 	u32                             component; \
1120 	u32                             line; \
1121 	char                            module[ACPI_MAX_MODULE_NAME]; \
1122 	u8                              alloc_type;
1123 
1124 struct acpi_debug_mem_header {
1125 ACPI_COMMON_DEBUG_MEM_HEADER};
1126 
1127 struct acpi_debug_mem_block {
1128 	ACPI_COMMON_DEBUG_MEM_HEADER u64 user_space;
1129 };
1130 
1131 #define ACPI_MEM_LIST_GLOBAL            0
1132 #define ACPI_MEM_LIST_NSNODE            1
1133 #define ACPI_MEM_LIST_MAX               1
1134 #define ACPI_NUM_MEM_LISTS              2
1135 
1136 /*****************************************************************************
1137  *
1138  * Info/help support
1139  *
1140  ****************************************************************************/
1141 
1142 struct ah_predefined_name {
1143 	char *name;
1144 	char *description;
1145 #ifndef ACPI_ASL_COMPILER
1146 	char *action;
1147 #endif
1148 };
1149 
1150 #endif				/* __ACLOCAL_H__ */
1151