RTEMS 6.1-rc6
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acmacros.h
1/******************************************************************************
2 *
3 * Name: acmacros.h - C macros for the entire subsystem.
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2024, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152#ifndef __ACMACROS_H__
153#define __ACMACROS_H__
154
155
156/*
157 * Extract data using a pointer. Any more than a byte and we
158 * get into potential alignment issues -- see the STORE macros below.
159 * Use with care.
160 */
161#define ACPI_CAST8(ptr) ACPI_CAST_PTR (UINT8, (ptr))
162#define ACPI_CAST16(ptr) ACPI_CAST_PTR (UINT16, (ptr))
163#define ACPI_CAST32(ptr) ACPI_CAST_PTR (UINT32, (ptr))
164#define ACPI_CAST64(ptr) ACPI_CAST_PTR (UINT64, (ptr))
165#define ACPI_GET8(ptr) (*ACPI_CAST8 (ptr))
166#define ACPI_GET16(ptr) (*ACPI_CAST16 (ptr))
167#define ACPI_GET32(ptr) (*ACPI_CAST32 (ptr))
168#define ACPI_GET64(ptr) (*ACPI_CAST64 (ptr))
169#define ACPI_SET8(ptr, val) (*ACPI_CAST8 (ptr) = (UINT8) (val))
170#define ACPI_SET16(ptr, val) (*ACPI_CAST16 (ptr) = (UINT16) (val))
171#define ACPI_SET32(ptr, val) (*ACPI_CAST32 (ptr) = (UINT32) (val))
172#define ACPI_SET64(ptr, val) (*ACPI_CAST64 (ptr) = (UINT64) (val))
173
174/*
175 * printf() format helper. This macro is a workaround for the difficulties
176 * with emitting 64-bit integers and 64-bit pointers with the same code
177 * for both 32-bit and 64-bit hosts.
178 */
179#define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i), ACPI_LODWORD(i)
180
181
182/*
183 * Macros for moving data around to/from buffers that are possibly unaligned.
184 * If the hardware supports the transfer of unaligned data, just do the store.
185 * Otherwise, we have to move one byte at a time.
186 */
187#ifdef ACPI_BIG_ENDIAN
188/*
189 * Macros for big-endian machines
190 */
191
192/* These macros reverse the bytes during the move, converting little-endian to big endian */
193
194 /* Big Endian <== Little Endian */
195 /* Hi...Lo Lo...Hi */
196/* 16-bit source, 16/32/64 destination */
197
198#define ACPI_MOVE_16_TO_16(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[1];\
199 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[0];}
200
201#define ACPI_MOVE_16_TO_32(d, s) {(*(UINT32 *)(void *)(d))=0;\
202 ((UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
203 ((UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}
204
205#define ACPI_MOVE_16_TO_64(d, s) {(*(UINT64 *)(void *)(d))=0;\
206 ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
207 ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
208
209/* 32-bit source, 16/32/64 destination */
210
211#define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
212
213#define ACPI_MOVE_32_TO_32(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[3];\
214 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[2];\
215 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
216 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}
217
218#define ACPI_MOVE_32_TO_64(d, s) {(*(UINT64 *)(void *)(d))=0;\
219 ((UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
220 ((UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
221 ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
222 ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
223
224/* 64-bit source, 16/32/64 destination */
225
226#define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
227
228#define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
229
230#define ACPI_MOVE_64_TO_64(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[7];\
231 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[6];\
232 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[5];\
233 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[4];\
234 (( UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
235 (( UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
236 (( UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
237 (( UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
238#else
239/*
240 * Macros for little-endian machines
241 */
242
243#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
244
245/* The hardware supports unaligned transfers, just do the little-endian move */
246
247/* 16-bit source, 16/32/64 destination */
248
249#define ACPI_MOVE_16_TO_16(d, s) *(UINT16 *)(void *)(d) = *(UINT16 *)(void *)(s)
250#define ACPI_MOVE_16_TO_32(d, s) *(UINT32 *)(void *)(d) = *(UINT16 *)(void *)(s)
251#define ACPI_MOVE_16_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT16 *)(void *)(s)
252
253/* 32-bit source, 16/32/64 destination */
254
255#define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
256#define ACPI_MOVE_32_TO_32(d, s) *(UINT32 *)(void *)(d) = *(UINT32 *)(void *)(s)
257#define ACPI_MOVE_32_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT32 *)(void *)(s)
258
259/* 64-bit source, 16/32/64 destination */
260
261#define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
262#define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
263#define ACPI_MOVE_64_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT64 *)(void *)(s)
264
265#else
266/*
267 * The hardware does not support unaligned transfers. We must move the
268 * data one byte at a time. These macros work whether the source or
269 * the destination (or both) is/are unaligned. (Little-endian move)
270 */
271
272/* 16-bit source, 16/32/64 destination */
273
274#define ACPI_MOVE_16_TO_16(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
275 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];}
276
277#define ACPI_MOVE_16_TO_32(d, s) {(*(UINT32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
278#define ACPI_MOVE_16_TO_64(d, s) {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
279
280/* 32-bit source, 16/32/64 destination */
281
282#define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
283
284#define ACPI_MOVE_32_TO_32(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
285 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
286 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
287 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];}
288
289#define ACPI_MOVE_32_TO_64(d, s) {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}
290
291/* 64-bit source, 16/32/64 destination */
292
293#define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
294#define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
295#define ACPI_MOVE_64_TO_64(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
296 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
297 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
298 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];\
299 (( UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[4];\
300 (( UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[5];\
301 (( UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[6];\
302 (( UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[7];}
303#endif
304#endif
305
306
307/*
308 * Fast power-of-two math macros for non-optimized compilers
309 */
310#define _ACPI_DIV(value, PowerOf2) ((UINT32) ((value) >> (PowerOf2)))
311#define _ACPI_MUL(value, PowerOf2) ((UINT32) ((value) << (PowerOf2)))
312#define _ACPI_MOD(value, Divisor) ((UINT32) ((value) & ((Divisor) -1)))
313
314#define ACPI_DIV_2(a) _ACPI_DIV(a, 1)
315#define ACPI_MUL_2(a) _ACPI_MUL(a, 1)
316#define ACPI_MOD_2(a) _ACPI_MOD(a, 2)
317
318#define ACPI_DIV_4(a) _ACPI_DIV(a, 2)
319#define ACPI_MUL_4(a) _ACPI_MUL(a, 2)
320#define ACPI_MOD_4(a) _ACPI_MOD(a, 4)
321
322#define ACPI_DIV_8(a) _ACPI_DIV(a, 3)
323#define ACPI_MUL_8(a) _ACPI_MUL(a, 3)
324#define ACPI_MOD_8(a) _ACPI_MOD(a, 8)
325
326#define ACPI_DIV_16(a) _ACPI_DIV(a, 4)
327#define ACPI_MUL_16(a) _ACPI_MUL(a, 4)
328#define ACPI_MOD_16(a) _ACPI_MOD(a, 16)
329
330#define ACPI_DIV_32(a) _ACPI_DIV(a, 5)
331#define ACPI_MUL_32(a) _ACPI_MUL(a, 5)
332#define ACPI_MOD_32(a) _ACPI_MOD(a, 32)
333
334/* Test for ASCII character */
335
336#define ACPI_IS_ASCII(c) ((c) < 0x80)
337
338/* Signed integers */
339
340#define ACPI_SIGN_POSITIVE 0
341#define ACPI_SIGN_NEGATIVE 1
342
343
344/*
345 * Rounding macros (Power of two boundaries only)
346 */
347#define ACPI_ROUND_DOWN(value, boundary) (((ACPI_SIZE)(value)) & \
348 (~(((ACPI_SIZE) boundary)-1)))
349
350#define ACPI_ROUND_UP(value, boundary) ((((ACPI_SIZE)(value)) + \
351 (((ACPI_SIZE) boundary)-1)) & \
352 (~(((ACPI_SIZE) boundary)-1)))
353
354/* Note: sizeof(ACPI_SIZE) evaluates to either 4 or 8 (32- vs 64-bit mode) */
355
356#define ACPI_ROUND_DOWN_TO_32BIT(a) ACPI_ROUND_DOWN(a, 4)
357#define ACPI_ROUND_DOWN_TO_64BIT(a) ACPI_ROUND_DOWN(a, 8)
358#define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a) ACPI_ROUND_DOWN(a, sizeof(ACPI_SIZE))
359
360#define ACPI_ROUND_UP_TO_32BIT(a) ACPI_ROUND_UP(a, 4)
361#define ACPI_ROUND_UP_TO_64BIT(a) ACPI_ROUND_UP(a, 8)
362#define ACPI_ROUND_UP_TO_NATIVE_WORD(a) ACPI_ROUND_UP(a, sizeof(ACPI_SIZE))
363
364#define ACPI_ROUND_BITS_UP_TO_BYTES(a) ACPI_DIV_8((a) + 7)
365#define ACPI_ROUND_BITS_DOWN_TO_BYTES(a) ACPI_DIV_8((a))
366
367#define ACPI_ROUND_UP_TO_1K(a) (((a) + 1023) >> 10)
368
369/* Generic (non-power-of-two) rounding */
370
371#define ACPI_ROUND_UP_TO(value, boundary) (((value) + ((boundary)-1)) / (boundary))
372
373#define ACPI_IS_MISALIGNED(value) (((ACPI_SIZE) value) & (sizeof(ACPI_SIZE)-1))
374
375/* Generic bit manipulation */
376
377#ifndef ACPI_USE_NATIVE_BIT_FINDER
378
379#define __ACPI_FIND_LAST_BIT_2(a, r) ((((UINT8) (a)) & 0x02) ? (r)+1 : (r))
380#define __ACPI_FIND_LAST_BIT_4(a, r) ((((UINT8) (a)) & 0x0C) ? \
381 __ACPI_FIND_LAST_BIT_2 ((a)>>2, (r)+2) : \
382 __ACPI_FIND_LAST_BIT_2 ((a), (r)))
383#define __ACPI_FIND_LAST_BIT_8(a, r) ((((UINT8) (a)) & 0xF0) ? \
384 __ACPI_FIND_LAST_BIT_4 ((a)>>4, (r)+4) : \
385 __ACPI_FIND_LAST_BIT_4 ((a), (r)))
386#define __ACPI_FIND_LAST_BIT_16(a, r) ((((UINT16) (a)) & 0xFF00) ? \
387 __ACPI_FIND_LAST_BIT_8 ((a)>>8, (r)+8) : \
388 __ACPI_FIND_LAST_BIT_8 ((a), (r)))
389#define __ACPI_FIND_LAST_BIT_32(a, r) ((((UINT32) (a)) & 0xFFFF0000) ? \
390 __ACPI_FIND_LAST_BIT_16 ((a)>>16, (r)+16) : \
391 __ACPI_FIND_LAST_BIT_16 ((a), (r)))
392#define __ACPI_FIND_LAST_BIT_64(a, r) ((((UINT64) (a)) & 0xFFFFFFFF00000000) ? \
393 __ACPI_FIND_LAST_BIT_32 ((a)>>32, (r)+32) : \
394 __ACPI_FIND_LAST_BIT_32 ((a), (r)))
395
396#define ACPI_FIND_LAST_BIT_8(a) ((a) ? __ACPI_FIND_LAST_BIT_8 (a, 1) : 0)
397#define ACPI_FIND_LAST_BIT_16(a) ((a) ? __ACPI_FIND_LAST_BIT_16 (a, 1) : 0)
398#define ACPI_FIND_LAST_BIT_32(a) ((a) ? __ACPI_FIND_LAST_BIT_32 (a, 1) : 0)
399#define ACPI_FIND_LAST_BIT_64(a) ((a) ? __ACPI_FIND_LAST_BIT_64 (a, 1) : 0)
400
401#define __ACPI_FIND_FIRST_BIT_2(a, r) ((((UINT8) (a)) & 0x01) ? (r) : (r)+1)
402#define __ACPI_FIND_FIRST_BIT_4(a, r) ((((UINT8) (a)) & 0x03) ? \
403 __ACPI_FIND_FIRST_BIT_2 ((a), (r)) : \
404 __ACPI_FIND_FIRST_BIT_2 ((a)>>2, (r)+2))
405#define __ACPI_FIND_FIRST_BIT_8(a, r) ((((UINT8) (a)) & 0x0F) ? \
406 __ACPI_FIND_FIRST_BIT_4 ((a), (r)) : \
407 __ACPI_FIND_FIRST_BIT_4 ((a)>>4, (r)+4))
408#define __ACPI_FIND_FIRST_BIT_16(a, r) ((((UINT16) (a)) & 0x00FF) ? \
409 __ACPI_FIND_FIRST_BIT_8 ((a), (r)) : \
410 __ACPI_FIND_FIRST_BIT_8 ((a)>>8, (r)+8))
411#define __ACPI_FIND_FIRST_BIT_32(a, r) ((((UINT32) (a)) & 0x0000FFFF) ? \
412 __ACPI_FIND_FIRST_BIT_16 ((a), (r)) : \
413 __ACPI_FIND_FIRST_BIT_16 ((a)>>16, (r)+16))
414#define __ACPI_FIND_FIRST_BIT_64(a, r) ((((UINT64) (a)) & 0x00000000FFFFFFFF) ? \
415 __ACPI_FIND_FIRST_BIT_32 ((a), (r)) : \
416 __ACPI_FIND_FIRST_BIT_32 ((a)>>32, (r)+32))
417
418#define ACPI_FIND_FIRST_BIT_8(a) ((a) ? __ACPI_FIND_FIRST_BIT_8 (a, 1) : 0)
419#define ACPI_FIND_FIRST_BIT_16(a) ((a) ? __ACPI_FIND_FIRST_BIT_16 (a, 1) : 0)
420#define ACPI_FIND_FIRST_BIT_32(a) ((a) ? __ACPI_FIND_FIRST_BIT_32 (a, 1) : 0)
421#define ACPI_FIND_FIRST_BIT_64(a) ((a) ? __ACPI_FIND_FIRST_BIT_64 (a, 1) : 0)
422
423#endif /* ACPI_USE_NATIVE_BIT_FINDER */
424
425/* Generic (power-of-two) rounding */
426
427#define ACPI_ROUND_UP_POWER_OF_TWO_8(a) ((UINT8) \
428 (((UINT16) 1) << ACPI_FIND_LAST_BIT_8 ((a) - 1)))
429#define ACPI_ROUND_DOWN_POWER_OF_TWO_8(a) ((UINT8) \
430 (((UINT16) 1) << (ACPI_FIND_LAST_BIT_8 ((a)) - 1)))
431#define ACPI_ROUND_UP_POWER_OF_TWO_16(a) ((UINT16) \
432 (((UINT32) 1) << ACPI_FIND_LAST_BIT_16 ((a) - 1)))
433#define ACPI_ROUND_DOWN_POWER_OF_TWO_16(a) ((UINT16) \
434 (((UINT32) 1) << (ACPI_FIND_LAST_BIT_16 ((a)) - 1)))
435#define ACPI_ROUND_UP_POWER_OF_TWO_32(a) ((UINT32) \
436 (((UINT64) 1) << ACPI_FIND_LAST_BIT_32 ((a) - 1)))
437#define ACPI_ROUND_DOWN_POWER_OF_TWO_32(a) ((UINT32) \
438 (((UINT64) 1) << (ACPI_FIND_LAST_BIT_32 ((a)) - 1)))
439#define ACPI_IS_ALIGNED(a, s) (((a) & ((s) - 1)) == 0)
440#define ACPI_IS_POWER_OF_TWO(a) ACPI_IS_ALIGNED(a, a)
441
442/*
443 * Bitmask creation
444 * Bit positions start at zero.
445 * MASK_BITS_ABOVE creates a mask starting AT the position and above
446 * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
447 * MASK_BITS_ABOVE/BELOW accepts a bit offset to create a mask
448 * MASK_BITS_ABOVE/BELOW_32/64 accepts a bit width to create a mask
449 * Note: The ACPI_INTEGER_BIT_SIZE check is used to bypass compiler
450 * differences with the shift operator
451 */
452#define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_UINT64_MAX) << ((UINT32) (position))))
453#define ACPI_MASK_BITS_BELOW(position) ((ACPI_UINT64_MAX) << ((UINT32) (position)))
454#define ACPI_MASK_BITS_ABOVE_32(width) ((UINT32) ACPI_MASK_BITS_ABOVE(width))
455#define ACPI_MASK_BITS_BELOW_32(width) ((UINT32) ACPI_MASK_BITS_BELOW(width))
456#define ACPI_MASK_BITS_ABOVE_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \
457 ACPI_UINT64_MAX : \
458 ACPI_MASK_BITS_ABOVE(width))
459#define ACPI_MASK_BITS_BELOW_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \
460 (UINT64) 0 : \
461 ACPI_MASK_BITS_BELOW(width))
462
463/* Bitfields within ACPI registers */
464
465#define ACPI_REGISTER_PREPARE_BITS(Val, Pos, Mask) \
466 ((Val << Pos) & Mask)
467
468#define ACPI_REGISTER_INSERT_VALUE(Reg, Pos, Mask, Val) \
469 Reg = (Reg & (~(Mask))) | ACPI_REGISTER_PREPARE_BITS(Val, Pos, Mask)
470
471#define ACPI_INSERT_BITS(Target, Mask, Source) \
472 Target = ((Target & (~(Mask))) | (Source & Mask))
473
474/* Generic bitfield macros and masks */
475
476#define ACPI_GET_BITS(SourcePtr, Position, Mask) \
477 ((*(SourcePtr) >> (Position)) & (Mask))
478
479#define ACPI_SET_BITS(TargetPtr, Position, Mask, Value) \
480 (*(TargetPtr) |= (((Value) & (Mask)) << (Position)))
481
482#define ACPI_1BIT_MASK 0x00000001
483#define ACPI_2BIT_MASK 0x00000003
484#define ACPI_3BIT_MASK 0x00000007
485#define ACPI_4BIT_MASK 0x0000000F
486#define ACPI_5BIT_MASK 0x0000001F
487#define ACPI_6BIT_MASK 0x0000003F
488#define ACPI_7BIT_MASK 0x0000007F
489#define ACPI_8BIT_MASK 0x000000FF
490#define ACPI_16BIT_MASK 0x0000FFFF
491#define ACPI_24BIT_MASK 0x00FFFFFF
492
493/* Macros to extract flag bits from position zero */
494
495#define ACPI_GET_1BIT_FLAG(Value) ((Value) & ACPI_1BIT_MASK)
496#define ACPI_GET_2BIT_FLAG(Value) ((Value) & ACPI_2BIT_MASK)
497#define ACPI_GET_3BIT_FLAG(Value) ((Value) & ACPI_3BIT_MASK)
498#define ACPI_GET_4BIT_FLAG(Value) ((Value) & ACPI_4BIT_MASK)
499
500/* Macros to extract flag bits from position one and above */
501
502#define ACPI_EXTRACT_1BIT_FLAG(Field, Position) (ACPI_GET_1BIT_FLAG ((Field) >> Position))
503#define ACPI_EXTRACT_2BIT_FLAG(Field, Position) (ACPI_GET_2BIT_FLAG ((Field) >> Position))
504#define ACPI_EXTRACT_3BIT_FLAG(Field, Position) (ACPI_GET_3BIT_FLAG ((Field) >> Position))
505#define ACPI_EXTRACT_4BIT_FLAG(Field, Position) (ACPI_GET_4BIT_FLAG ((Field) >> Position))
506
507/* ACPI Pathname helpers */
508
509#define ACPI_IS_ROOT_PREFIX(c) ((c) == (UINT8) 0x5C) /* Backslash */
510#define ACPI_IS_PARENT_PREFIX(c) ((c) == (UINT8) 0x5E) /* Carat */
511#define ACPI_IS_PATH_SEPARATOR(c) ((c) == (UINT8) 0x2E) /* Period (dot) */
512
513/*
514 * An object of type ACPI_NAMESPACE_NODE can appear in some contexts
515 * where a pointer to an object of type ACPI_OPERAND_OBJECT can also
516 * appear. This macro is used to distinguish them.
517 *
518 * The "DescriptorType" field is the second field in both structures.
519 */
520#define ACPI_GET_DESCRIPTOR_PTR(d) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.CommonPointer)
521#define ACPI_SET_DESCRIPTOR_PTR(d, p) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.CommonPointer = (p))
522#define ACPI_GET_DESCRIPTOR_TYPE(d) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.DescriptorType)
523#define ACPI_SET_DESCRIPTOR_TYPE(d, t) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.DescriptorType = (t))
524
525/*
526 * Macros for the master AML opcode table
527 */
528#if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
529#define ACPI_OP(Name, PArgs, IArgs, ObjType, Class, Type, Flags) \
530 {Name, (UINT32)(PArgs), (UINT32)(IArgs), (UINT32)(Flags), ObjType, Class, Type}
531#else
532#define ACPI_OP(Name, PArgs, IArgs, ObjType, Class, Type, Flags) \
533 {(UINT32)(PArgs), (UINT32)(IArgs), (UINT32)(Flags), ObjType, Class, Type}
534#endif
535
536#define ARG_TYPE_WIDTH 5
537#define ARG_1(x) ((UINT32)(x))
538#define ARG_2(x) ((UINT32)(x) << (1 * ARG_TYPE_WIDTH))
539#define ARG_3(x) ((UINT32)(x) << (2 * ARG_TYPE_WIDTH))
540#define ARG_4(x) ((UINT32)(x) << (3 * ARG_TYPE_WIDTH))
541#define ARG_5(x) ((UINT32)(x) << (4 * ARG_TYPE_WIDTH))
542#define ARG_6(x) ((UINT32)(x) << (5 * ARG_TYPE_WIDTH))
543
544#define ARGI_LIST1(a) (ARG_1(a))
545#define ARGI_LIST2(a, b) (ARG_1(b)|ARG_2(a))
546#define ARGI_LIST3(a, b, c) (ARG_1(c)|ARG_2(b)|ARG_3(a))
547#define ARGI_LIST4(a, b, c, d) (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
548#define ARGI_LIST5(a, b, c, d, e) (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
549#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))
550
551#define ARGP_LIST1(a) (ARG_1(a))
552#define ARGP_LIST2(a, b) (ARG_1(a)|ARG_2(b))
553#define ARGP_LIST3(a, b, c) (ARG_1(a)|ARG_2(b)|ARG_3(c))
554#define ARGP_LIST4(a, b, c, d) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
555#define ARGP_LIST5(a, b, c, d, e) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
556#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))
557
558#define GET_CURRENT_ARG_TYPE(List) (List & ((UINT32) 0x1F))
559#define INCREMENT_ARG_LIST(List) (List >>= ((UINT32) ARG_TYPE_WIDTH))
560
561/*
562 * Ascii error messages can be configured out
563 */
564#ifndef ACPI_NO_ERROR_MESSAGES
565/*
566 * Error reporting. The callers module and line number are inserted by AE_INFO,
567 * the plist contains a set of parens to allow variable-length lists.
568 * These macros are used for both the debug and non-debug versions of the code.
569 */
570#define ACPI_ERROR_NAMESPACE(s, p, e) AcpiUtPrefixedNamespaceError (AE_INFO, s, p, e);
571#define ACPI_ERROR_METHOD(s, n, p, e) AcpiUtMethodError (AE_INFO, s, n, p, e);
572#define ACPI_WARN_PREDEFINED(plist) AcpiUtPredefinedWarning plist
573#define ACPI_INFO_PREDEFINED(plist) AcpiUtPredefinedInfo plist
574#define ACPI_BIOS_ERROR_PREDEFINED(plist) AcpiUtPredefinedBiosError plist
575#define ACPI_ERROR_ONLY(s) s
576
577#else
578
579/* No error messages */
580
581#define ACPI_ERROR_NAMESPACE(s, p, e)
582#define ACPI_ERROR_METHOD(s, n, p, e)
583#define ACPI_WARN_PREDEFINED(plist)
584#define ACPI_INFO_PREDEFINED(plist)
585#define ACPI_BIOS_ERROR_PREDEFINED(plist)
586#define ACPI_ERROR_ONLY(s)
587
588#endif /* ACPI_NO_ERROR_MESSAGES */
589
590#if (!ACPI_REDUCED_HARDWARE)
591#define ACPI_HW_OPTIONAL_FUNCTION(addr) addr
592#else
593#define ACPI_HW_OPTIONAL_FUNCTION(addr) NULL
594#endif
595
596
597/*
598 * Macros used for ACPICA utilities only
599 */
600
601/* Generate a UUID */
602
603#define ACPI_INIT_UUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
604 (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
605 (b) & 0xFF, ((b) >> 8) & 0xFF, \
606 (c) & 0xFF, ((c) >> 8) & 0xFF, \
607 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
608
609#define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7'))
610
611
612/*
613 * Macros used for the ASL-/ASL+ converter utility
614 */
615#ifdef ACPI_ASL_COMPILER
616
617#define ASL_CV_LABEL_FILENODE(a) CvLabelFileNode(a);
618#define ASL_CV_CAPTURE_COMMENTS_ONLY(a) CvCaptureCommentsOnly (a);
619#define ASL_CV_CAPTURE_COMMENTS(a) CvCaptureComments (a);
620#define ASL_CV_TRANSFER_COMMENTS(a) CvTransferComments (a);
621#define ASL_CV_CLOSE_PAREN(a,b) CvCloseParenWriteComment(a,b);
622#define ASL_CV_CLOSE_BRACE(a,b) CvCloseBraceWriteComment(a,b);
623#define ASL_CV_SWITCH_FILES(a,b) CvSwitchFiles(a,b);
624#define ASL_CV_CLEAR_OP_COMMENTS(a) CvClearOpComments(a);
625#define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) CvPrintOneCommentType (a,b,c,d);
626#define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) CvPrintOneCommentList (a,b);
627#define ASL_CV_FILE_HAS_SWITCHED(a) CvFileHasSwitched(a)
628#define ASL_CV_INIT_FILETREE(a,b) CvInitFileTree(a,b);
629
630#else
631
632#define ASL_CV_LABEL_FILENODE(a)
633#define ASL_CV_CAPTURE_COMMENTS_ONLY(a)
634#define ASL_CV_CAPTURE_COMMENTS(a)
635#define ASL_CV_TRANSFER_COMMENTS(a)
636#define ASL_CV_CLOSE_PAREN(a,b) AcpiOsPrintf (")");
637#define ASL_CV_CLOSE_BRACE(a,b) AcpiOsPrintf ("}");
638#define ASL_CV_SWITCH_FILES(a,b)
639#define ASL_CV_CLEAR_OP_COMMENTS(a)
640#define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d)
641#define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b)
642#define ASL_CV_FILE_HAS_SWITCHED(a) 0
643#define ASL_CV_INIT_FILETREE(a,b)
644
645#endif
646
647#endif /* ACMACROS_H */
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