summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/acmacros.h
blob: 2269e10bc21b41f8a6e4fd8f1c3e10fa077985fc (plain)
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
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/******************************************************************************
 *
 * Name: acmacros.h - C macros for the entire subsystem.
 *
 * Copyright (C) 2000 - 2020, Intel Corp.
 *
 *****************************************************************************/

#ifndef __ACMACROS_H__
#define __ACMACROS_H__

/*
 * Extract data using a pointer. Any more than a byte and we
 * get into potential alignment issues -- see the STORE macros below.
 * Use with care.
 */
#define ACPI_CAST8(ptr)                 ACPI_CAST_PTR (u8, (ptr))
#define ACPI_CAST16(ptr)                ACPI_CAST_PTR (u16, (ptr))
#define ACPI_CAST32(ptr)                ACPI_CAST_PTR (u32, (ptr))
#define ACPI_CAST64(ptr)                ACPI_CAST_PTR (u64, (ptr))
#define ACPI_GET8(ptr)                  (*ACPI_CAST8 (ptr))
#define ACPI_GET16(ptr)                 (*ACPI_CAST16 (ptr))
#define ACPI_GET32(ptr)                 (*ACPI_CAST32 (ptr))
#define ACPI_GET64(ptr)                 (*ACPI_CAST64 (ptr))
#define ACPI_SET8(ptr, val)             (*ACPI_CAST8 (ptr) = (u8) (val))
#define ACPI_SET16(ptr, val)            (*ACPI_CAST16 (ptr) = (u16) (val))
#define ACPI_SET32(ptr, val)            (*ACPI_CAST32 (ptr) = (u32) (val))
#define ACPI_SET64(ptr, val)            (*ACPI_CAST64 (ptr) = (u64) (val))

/*
 * printf() format helper. This macro is a workaround for the difficulties
 * with emitting 64-bit integers and 64-bit pointers with the same code
 * for both 32-bit and 64-bit hosts.
 */
#define ACPI_FORMAT_UINT64(i)           ACPI_HIDWORD(i), ACPI_LODWORD(i)

/*
 * Macros for moving data around to/from buffers that are possibly unaligned.
 * If the hardware supports the transfer of unaligned data, just do the store.
 * Otherwise, we have to move one byte at a time.
 */
#ifdef ACPI_BIG_ENDIAN
/*
 * Macros for big-endian machines
 */

/* These macros reverse the bytes during the move, converting little-endian to big endian */

	 /* Big Endian      <==        Little Endian */
	 /*  Hi...Lo                     Lo...Hi     */
/* 16-bit source, 16/32/64 destination */

#define ACPI_MOVE_16_TO_16(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\
			  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];}

#define ACPI_MOVE_16_TO_32(d, s)        {(*(u32 *)(void *)(d))=0;\
					  ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
					  ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}

#define ACPI_MOVE_16_TO_64(d, s)        {(*(u64 *)(void *)(d))=0;\
							   ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
							   ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}

/* 32-bit source, 16/32/64 destination */

#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)	/* Truncate to 16 */

#define ACPI_MOVE_32_TO_32(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\
									  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\
									  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
									  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}

#define ACPI_MOVE_32_TO_64(d, s)        {(*(u64 *)(void *)(d))=0;\
										   ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
										   ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
										   ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
										   ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}

/* 64-bit source, 16/32/64 destination */

#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)	/* Truncate to 16 */

#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)	/* Truncate to 32 */

#define ACPI_MOVE_64_TO_64(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\
										 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\
										 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\
										 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\
										 ((  u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
										 ((  u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
										 ((  u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
										 ((  u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
#else
/*
 * Macros for little-endian machines
 */

#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED

/* The hardware supports unaligned transfers, just do the little-endian move */

/* 16-bit source, 16/32/64 destination */

#define ACPI_MOVE_16_TO_16(d, s)        *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
#define ACPI_MOVE_16_TO_32(d, s)        *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
#define ACPI_MOVE_16_TO_64(d, s)        *(u64 *)(void *)(d) = *(u16 *)(void *)(s)

/* 32-bit source, 16/32/64 destination */

#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)	/* Truncate to 16 */
#define ACPI_MOVE_32_TO_32(d, s)        *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
#define ACPI_MOVE_32_TO_64(d, s)        *(u64 *)(void *)(d) = *(u32 *)(void *)(s)

/* 64-bit source, 16/32/64 destination */

#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)	/* Truncate to 16 */
#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)	/* Truncate to 32 */
#define ACPI_MOVE_64_TO_64(d, s)        *(u64 *)(void *)(d) = *(u64 *)(void *)(s)

#else
/*
 * The hardware does not support unaligned transfers. We must move the
 * data one byte at a time. These macros work whether the source or
 * the destination (or both) is/are unaligned. (Little-endian move)
 */

/* 16-bit source, 16/32/64 destination */

#define ACPI_MOVE_16_TO_16(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
										 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];}

#define ACPI_MOVE_16_TO_32(d, s)        {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
#define ACPI_MOVE_16_TO_64(d, s)        {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}

/* 32-bit source, 16/32/64 destination */

#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)	/* Truncate to 16 */

#define ACPI_MOVE_32_TO_32(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
										 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
										 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
										 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];}

#define ACPI_MOVE_32_TO_64(d, s)        {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}

/* 64-bit source, 16/32/64 destination */

#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)	/* Truncate to 16 */
#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)	/* Truncate to 32 */
#define ACPI_MOVE_64_TO_64(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
										 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
										 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
										 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\
										 ((  u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[4];\
										 ((  u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[5];\
										 ((  u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[6];\
										 ((  u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[7];}
#endif
#endif

/*
 * Fast power-of-two math macros for non-optimized compilers
 */
#define _ACPI_DIV(value, power_of2)     ((u32) ((value) >> (power_of2)))
#define _ACPI_MUL(value, power_of2)     ((u32) ((value) << (power_of2)))
#define _ACPI_MOD(value, divisor)       ((u32) ((value) & ((divisor) -1)))

#define ACPI_DIV_2(a)                   _ACPI_DIV(a, 1)
#define ACPI_MUL_2(a)                   _ACPI_MUL(a, 1)
#define ACPI_MOD_2(a)                   _ACPI_MOD(a, 2)

#define ACPI_DIV_4(a)                   _ACPI_DIV(a, 2)
#define ACPI_MUL_4(a)                   _ACPI_MUL(a, 2)
#define ACPI_MOD_4(a)                   _ACPI_MOD(a, 4)

#define ACPI_DIV_8(a)                   _ACPI_DIV(a, 3)
#define ACPI_MUL_8(a)                   _ACPI_MUL(a, 3)
#define ACPI_MOD_8(a)                   _ACPI_MOD(a, 8)

#define ACPI_DIV_16(a)                  _ACPI_DIV(a, 4)
#define ACPI_MUL_16(a)                  _ACPI_MUL(a, 4)
#define ACPI_MOD_16(a)                  _ACPI_MOD(a, 16)

#define ACPI_DIV_32(a)                  _ACPI_DIV(a, 5)
#define ACPI_MUL_32(a)                  _ACPI_MUL(a, 5)
#define ACPI_MOD_32(a)                  _ACPI_MOD(a, 32)

/* Test for ASCII character */

#define ACPI_IS_ASCII(c)                ((c) < 0x80)

/* Signed integers */

#define ACPI_SIGN_POSITIVE              0
#define ACPI_SIGN_NEGATIVE              1

/*
 * Rounding macros (Power of two boundaries only)
 */
#define ACPI_ROUND_DOWN(value, boundary)    (((acpi_size)(value)) & \
												(~(((acpi_size) boundary)-1)))

#define ACPI_ROUND_UP(value, boundary)      ((((acpi_size)(value)) + \
												(((acpi_size) boundary)-1)) & \
												(~(((acpi_size) boundary)-1)))

/* Note: sizeof(acpi_size) evaluates to either 4 or 8 (32- vs 64-bit mode) */

#define ACPI_ROUND_DOWN_TO_32BIT(a)         ACPI_ROUND_DOWN(a, 4)
#define ACPI_ROUND_DOWN_TO_64BIT(a)         ACPI_ROUND_DOWN(a, 8)
#define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a)   ACPI_ROUND_DOWN(a, sizeof(acpi_size))

#define ACPI_ROUND_UP_TO_32BIT(a)           ACPI_ROUND_UP(a, 4)
#define ACPI_ROUND_UP_TO_64BIT(a)           ACPI_ROUND_UP(a, 8)
#define ACPI_ROUND_UP_TO_NATIVE_WORD(a)     ACPI_ROUND_UP(a, sizeof(acpi_size))

#define ACPI_ROUND_BITS_UP_TO_BYTES(a)      ACPI_DIV_8((a) + 7)
#define ACPI_ROUND_BITS_DOWN_TO_BYTES(a)    ACPI_DIV_8((a))

#define ACPI_ROUND_UP_TO_1K(a)              (((a) + 1023) >> 10)

/* Generic (non-power-of-two) rounding */

#define ACPI_ROUND_UP_TO(value, boundary)   (((value) + ((boundary)-1)) / (boundary))

#define ACPI_IS_MISALIGNED(value)           (((acpi_size) value) & (sizeof(acpi_size)-1))

/* Generic bit manipulation */

#ifndef ACPI_USE_NATIVE_BIT_FINDER

#define __ACPI_FIND_LAST_BIT_2(a, r)        ((((u8)  (a)) & 0x02) ? (r)+1 : (r))
#define __ACPI_FIND_LAST_BIT_4(a, r)        ((((u8)  (a)) & 0x0C) ? \
											 __ACPI_FIND_LAST_BIT_2  ((a)>>2,  (r)+2) : \
											 __ACPI_FIND_LAST_BIT_2  ((a), (r)))
#define __ACPI_FIND_LAST_BIT_8(a, r)        ((((u8)  (a)) & 0xF0) ? \
											 __ACPI_FIND_LAST_BIT_4  ((a)>>4,  (r)+4) : \
											 __ACPI_FIND_LAST_BIT_4  ((a), (r)))
#define __ACPI_FIND_LAST_BIT_16(a, r)       ((((u16) (a)) & 0xFF00) ? \
											 __ACPI_FIND_LAST_BIT_8  ((a)>>8,  (r)+8) : \
											 __ACPI_FIND_LAST_BIT_8  ((a), (r)))
#define __ACPI_FIND_LAST_BIT_32(a, r)       ((((u32) (a)) & 0xFFFF0000) ? \
											 __ACPI_FIND_LAST_BIT_16 ((a)>>16, (r)+16) : \
											 __ACPI_FIND_LAST_BIT_16 ((a), (r)))
#define __ACPI_FIND_LAST_BIT_64(a, r)       ((((u64) (a)) & 0xFFFFFFFF00000000) ? \
											 __ACPI_FIND_LAST_BIT_32 ((a)>>32, (r)+32) : \
											 __ACPI_FIND_LAST_BIT_32 ((a), (r)))

#define ACPI_FIND_LAST_BIT_8(a)             ((a) ? __ACPI_FIND_LAST_BIT_8 (a, 1) : 0)
#define ACPI_FIND_LAST_BIT_16(a)            ((a) ? __ACPI_FIND_LAST_BIT_16 (a, 1) : 0)
#define ACPI_FIND_LAST_BIT_32(a)            ((a) ? __ACPI_FIND_LAST_BIT_32 (a, 1) : 0)
#define ACPI_FIND_LAST_BIT_64(a)            ((a) ? __ACPI_FIND_LAST_BIT_64 (a, 1) : 0)

#define __ACPI_FIND_FIRST_BIT_2(a, r)       ((((u8) (a)) & 0x01) ? (r) : (r)+1)
#define __ACPI_FIND_FIRST_BIT_4(a, r)       ((((u8) (a)) & 0x03) ? \
											 __ACPI_FIND_FIRST_BIT_2  ((a), (r)) : \
											 __ACPI_FIND_FIRST_BIT_2  ((a)>>2, (r)+2))
#define __ACPI_FIND_FIRST_BIT_8(a, r)       ((((u8) (a)) & 0x0F) ? \
											 __ACPI_FIND_FIRST_BIT_4  ((a), (r)) : \
											 __ACPI_FIND_FIRST_BIT_4  ((a)>>4, (r)+4))
#define __ACPI_FIND_FIRST_BIT_16(a, r)      ((((u16) (a)) & 0x00FF) ? \
											 __ACPI_FIND_FIRST_BIT_8  ((a), (r)) : \
											 __ACPI_FIND_FIRST_BIT_8  ((a)>>8, (r)+8))
#define __ACPI_FIND_FIRST_BIT_32(a, r)      ((((u32) (a)) & 0x0000FFFF) ? \
											 __ACPI_FIND_FIRST_BIT_16 ((a), (r)) : \
											 __ACPI_FIND_FIRST_BIT_16 ((a)>>16, (r)+16))
#define __ACPI_FIND_FIRST_BIT_64(a, r)      ((((u64) (a)) & 0x00000000FFFFFFFF) ? \
											 __ACPI_FIND_FIRST_BIT_32 ((a), (r)) : \
											 __ACPI_FIND_FIRST_BIT_32 ((a)>>32, (r)+32))

#define ACPI_FIND_FIRST_BIT_8(a)            ((a) ? __ACPI_FIND_FIRST_BIT_8 (a, 1) : 0)
#define ACPI_FIND_FIRST_BIT_16(a)           ((a) ? __ACPI_FIND_FIRST_BIT_16 (a, 1) : 0)
#define ACPI_FIND_FIRST_BIT_32(a)           ((a) ? __ACPI_FIND_FIRST_BIT_32 (a, 1) : 0)
#define ACPI_FIND_FIRST_BIT_64(a)           ((a) ? __ACPI_FIND_FIRST_BIT_64 (a, 1) : 0)

#endif				/* ACPI_USE_NATIVE_BIT_FINDER */

/* Generic (power-of-two) rounding */

#define ACPI_ROUND_UP_POWER_OF_TWO_8(a)     ((u8) \
											(((u16) 1) <<  ACPI_FIND_LAST_BIT_8  ((a)  - 1)))
#define ACPI_ROUND_DOWN_POWER_OF_TWO_8(a)   ((u8) \
											(((u16) 1) << (ACPI_FIND_LAST_BIT_8  ((a)) - 1)))
#define ACPI_ROUND_UP_POWER_OF_TWO_16(a)    ((u16) \
											(((u32) 1) <<  ACPI_FIND_LAST_BIT_16 ((a)  - 1)))
#define ACPI_ROUND_DOWN_POWER_OF_TWO_16(a)  ((u16) \
											(((u32) 1) << (ACPI_FIND_LAST_BIT_16 ((a)) - 1)))
#define ACPI_ROUND_UP_POWER_OF_TWO_32(a)    ((u32) \
											(((u64) 1) <<  ACPI_FIND_LAST_BIT_32 ((a)  - 1)))
#define ACPI_ROUND_DOWN_POWER_OF_TWO_32(a)  ((u32) \
											(((u64) 1) << (ACPI_FIND_LAST_BIT_32 ((a)) - 1)))
#define ACPI_IS_ALIGNED(a, s)               (((a) & ((s) - 1)) == 0)
#define ACPI_IS_POWER_OF_TWO(a)             ACPI_IS_ALIGNED(a, a)

/*
 * Bitmask creation
 * Bit positions start at zero.
 * MASK_BITS_ABOVE creates a mask starting AT the position and above
 * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
 * MASK_BITS_ABOVE/BELOW accepts a bit offset to create a mask
 * MASK_BITS_ABOVE/BELOW_32/64 accepts a bit width to create a mask
 * Note: The ACPI_INTEGER_BIT_SIZE check is used to bypass compiler
 * differences with the shift operator
 */
#define ACPI_MASK_BITS_ABOVE(position)      (~((ACPI_UINT64_MAX) << ((u32) (position))))
#define ACPI_MASK_BITS_BELOW(position)      ((ACPI_UINT64_MAX) << ((u32) (position)))
#define ACPI_MASK_BITS_ABOVE_32(width)      ((u32) ACPI_MASK_BITS_ABOVE(width))
#define ACPI_MASK_BITS_BELOW_32(width)      ((u32) ACPI_MASK_BITS_BELOW(width))
#define ACPI_MASK_BITS_ABOVE_64(width)      ((width) == ACPI_INTEGER_BIT_SIZE ? \
												ACPI_UINT64_MAX : \
												ACPI_MASK_BITS_ABOVE(width))
#define ACPI_MASK_BITS_BELOW_64(width)      ((width) == ACPI_INTEGER_BIT_SIZE ? \
												(u64) 0 : \
												ACPI_MASK_BITS_BELOW(width))

/* Bitfields within ACPI registers */

#define ACPI_REGISTER_PREPARE_BITS(val, pos, mask) \
	((val << pos) & mask)

#define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val) \
	reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)

#define ACPI_INSERT_BITS(target, mask, source) \
	target = ((target & (~(mask))) | (source & mask))

/* Generic bitfield macros and masks */

#define ACPI_GET_BITS(source_ptr, position, mask) \
	((*(source_ptr) >> (position)) & (mask))

#define ACPI_SET_BITS(target_ptr, position, mask, value) \
	(*(target_ptr) |= (((value) & (mask)) << (position)))

#define ACPI_1BIT_MASK      0x00000001
#define ACPI_2BIT_MASK      0x00000003
#define ACPI_3BIT_MASK      0x00000007
#define ACPI_4BIT_MASK      0x0000000F
#define ACPI_5BIT_MASK      0x0000001F
#define ACPI_6BIT_MASK      0x0000003F
#define ACPI_7BIT_MASK      0x0000007F
#define ACPI_8BIT_MASK      0x000000FF
#define ACPI_16BIT_MASK     0x0000FFFF
#define ACPI_24BIT_MASK     0x00FFFFFF

/* Macros to extract flag bits from position zero */

#define ACPI_GET_1BIT_FLAG(value)                   ((value) & ACPI_1BIT_MASK)
#define ACPI_GET_2BIT_FLAG(value)                   ((value) & ACPI_2BIT_MASK)
#define ACPI_GET_3BIT_FLAG(value)                   ((value) & ACPI_3BIT_MASK)
#define ACPI_GET_4BIT_FLAG(value)                   ((value) & ACPI_4BIT_MASK)

/* Macros to extract flag bits from position one and above */

#define ACPI_EXTRACT_1BIT_FLAG(field, position)     (ACPI_GET_1BIT_FLAG ((field) >> position))
#define ACPI_EXTRACT_2BIT_FLAG(field, position)     (ACPI_GET_2BIT_FLAG ((field) >> position))
#define ACPI_EXTRACT_3BIT_FLAG(field, position)     (ACPI_GET_3BIT_FLAG ((field) >> position))
#define ACPI_EXTRACT_4BIT_FLAG(field, position)     (ACPI_GET_4BIT_FLAG ((field) >> position))

/* ACPI Pathname helpers */

#define ACPI_IS_ROOT_PREFIX(c)      ((c) == (u8) 0x5C)	/* Backslash */
#define ACPI_IS_PARENT_PREFIX(c)    ((c) == (u8) 0x5E)	/* Carat */
#define ACPI_IS_PATH_SEPARATOR(c)   ((c) == (u8) 0x2E)	/* Period (dot) */

/*
 * An object of type struct acpi_namespace_node can appear in some contexts
 * where a pointer to an object of type union acpi_operand_object can also
 * appear. This macro is used to distinguish them.
 *
 * The "DescriptorType" field is the second field in both structures.
 */
#define ACPI_GET_DESCRIPTOR_PTR(d)      (((union acpi_descriptor *)(void *)(d))->common.common_pointer)
#define ACPI_SET_DESCRIPTOR_PTR(d, p)   (((union acpi_descriptor *)(void *)(d))->common.common_pointer = (p))
#define ACPI_GET_DESCRIPTOR_TYPE(d)     (((union acpi_descriptor *)(void *)(d))->common.descriptor_type)
#define ACPI_SET_DESCRIPTOR_TYPE(d, t)  (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = (t))

/*
 * Macros for the master AML opcode table
 */
#if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
#define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \
	{name, (u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
#else
#define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \
	{(u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
#endif

#define ARG_TYPE_WIDTH                  5
#define ARG_1(x)                        ((u32)(x))
#define ARG_2(x)                        ((u32)(x) << (1 * ARG_TYPE_WIDTH))
#define ARG_3(x)                        ((u32)(x) << (2 * ARG_TYPE_WIDTH))
#define ARG_4(x)                        ((u32)(x) << (3 * ARG_TYPE_WIDTH))
#define ARG_5(x)                        ((u32)(x) << (4 * ARG_TYPE_WIDTH))
#define ARG_6(x)                        ((u32)(x) << (5 * ARG_TYPE_WIDTH))

#define ARGI_LIST1(a)                   (ARG_1(a))
#define ARGI_LIST2(a, b)                (ARG_1(b)|ARG_2(a))
#define ARGI_LIST3(a, b, c)             (ARG_1(c)|ARG_2(b)|ARG_3(a))
#define ARGI_LIST4(a, b, c, d)          (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
#define ARGI_LIST5(a, b, c, d, e)       (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
#define ARGI_LIST6(a, b, c, d, e, f)    (ARG_1(f)|ARG_2(e)|ARG_3(d)|ARG_4(c)|ARG_5(b)|ARG_6(a))

#define ARGP_LIST1(a)                   (ARG_1(a))
#define ARGP_LIST2(a, b)                (ARG_1(a)|ARG_2(b))
#define ARGP_LIST3(a, b, c)             (ARG_1(a)|ARG_2(b)|ARG_3(c))
#define ARGP_LIST4(a, b, c, d)          (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
#define ARGP_LIST5(a, b, c, d, e)       (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
#define ARGP_LIST6(a, b, c, d, e, f)    (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e)|ARG_6(f))

#define GET_CURRENT_ARG_TYPE(list)      (list & ((u32) 0x1F))
#define INCREMENT_ARG_LIST(list)        (list >>= ((u32) ARG_TYPE_WIDTH))

/*
 * Ascii error messages can be configured out
 */
#ifndef ACPI_NO_ERROR_MESSAGES
/*
 * Error reporting. The callers module and line number are inserted by AE_INFO,
 * the plist contains a set of parens to allow variable-length lists.
 * These macros are used for both the debug and non-debug versions of the code.
 */
#define ACPI_ERROR_NAMESPACE(s, p, e)       acpi_ut_prefixed_namespace_error (AE_INFO, s, p, e);
#define ACPI_ERROR_METHOD(s, n, p, e)       acpi_ut_method_error (AE_INFO, s, n, p, e);
#define ACPI_WARN_PREDEFINED(plist)         acpi_ut_predefined_warning plist
#define ACPI_INFO_PREDEFINED(plist)         acpi_ut_predefined_info plist
#define ACPI_BIOS_ERROR_PREDEFINED(plist)   acpi_ut_predefined_bios_error plist
#define ACPI_ERROR_ONLY(s)                  s

#else

/* No error messages */

#define ACPI_ERROR_NAMESPACE(s, p, e)
#define ACPI_ERROR_METHOD(s, n, p, e)
#define ACPI_WARN_PREDEFINED(plist)
#define ACPI_INFO_PREDEFINED(plist)
#define ACPI_BIOS_ERROR_PREDEFINED(plist)
#define ACPI_ERROR_ONLY(s)

#endif				/* ACPI_NO_ERROR_MESSAGES */

#if (!ACPI_REDUCED_HARDWARE)
#define ACPI_HW_OPTIONAL_FUNCTION(addr)     addr
#else
#define ACPI_HW_OPTIONAL_FUNCTION(addr)     NULL
#endif

/*
 * Macros used for ACPICA utilities only
 */

/* Generate a UUID */

#define ACPI_INIT_UUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
	(a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
	(b) & 0xFF, ((b) >> 8) & 0xFF, \
	(c) & 0xFF, ((c) >> 8) & 0xFF, \
	(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)

#define ACPI_IS_OCTAL_DIGIT(d)              (((char)(d) >= '0') && ((char)(d) <= '7'))

/*
 * Macros used for the ASL-/ASL+ converter utility
 */
#ifdef ACPI_ASL_COMPILER

#define ASL_CV_LABEL_FILENODE(a)         cv_label_file_node(a);
#define ASL_CV_CAPTURE_COMMENTS_ONLY(a)   cv_capture_comments_only (a);
#define ASL_CV_CAPTURE_COMMENTS(a)       cv_capture_comments (a);
#define ASL_CV_TRANSFER_COMMENTS(a)      cv_transfer_comments (a);
#define ASL_CV_CLOSE_PAREN(a,b)          cv_close_paren_write_comment(a,b);
#define ASL_CV_CLOSE_BRACE(a,b)          cv_close_brace_write_comment(a,b);
#define ASL_CV_SWITCH_FILES(a,b)         cv_switch_files(a,b);
#define ASL_CV_CLEAR_OP_COMMENTS(a)       cv_clear_op_comments(a);
#define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) cv_print_one_comment_type (a,b,c,d);
#define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) cv_print_one_comment_list (a,b);
#define ASL_CV_FILE_HAS_SWITCHED(a)       cv_file_has_switched(a)
#define ASL_CV_INIT_FILETREE(a,b,c)      cv_init_file_tree(a,b,c);

#else

#define ASL_CV_LABEL_FILENODE(a)
#define ASL_CV_CAPTURE_COMMENTS_ONLY(a)
#define ASL_CV_CAPTURE_COMMENTS(a)
#define ASL_CV_TRANSFER_COMMENTS(a)
#define ASL_CV_CLOSE_PAREN(a,b)          acpi_os_printf (")");
#define ASL_CV_CLOSE_BRACE(a,b)          acpi_os_printf ("}");
#define ASL_CV_SWITCH_FILES(a,b)
#define ASL_CV_CLEAR_OP_COMMENTS(a)
#define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d)
#define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b)
#define ASL_CV_FILE_HAS_SWITCHED(a)       0
#define ASL_CV_INIT_FILETREE(a,b,c)

#endif

#endif				/* ACMACROS_H */