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Merge branch 'tty-updates' from Alan
[linux-2.6/mini2440.git] / include / acpi / acmacros.h
bloba597207e28352ab4de53a69d9d6eb8d29f6c0a28
1 /******************************************************************************
2 *
3 * Name: acmacros.h - C macros for the entire subsystem.
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2008, 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 __ACMACROS_H__
45 #define __ACMACROS_H__
46
47 /*
48 * Data manipulation macros
49 */
50 #define ACPI_LOWORD(l) ((u16)(u32)(l))
51 #define ACPI_HIWORD(l) ((u16)((((u32)(l)) >> 16) & 0xFFFF))
52 #define ACPI_LOBYTE(l) ((u8)(u16)(l))
53 #define ACPI_HIBYTE(l) ((u8)((((u16)(l)) >> 8) & 0xFF))
54
55 #define ACPI_SET_BIT(target,bit) ((target) |= (bit))
56 #define ACPI_CLEAR_BIT(target,bit) ((target) &= ~(bit))
57 #define ACPI_MIN(a,b) (((a)<(b))?(a):(b))
58 #define ACPI_MAX(a,b) (((a)>(b))?(a):(b))
59
60 /* Size calculation */
61
62 #define ACPI_ARRAY_LENGTH(x) (sizeof(x) / sizeof((x)[0]))
63
64 /*
65 * Extract data using a pointer. Any more than a byte and we
66 * get into potential aligment issues -- see the STORE macros below.
67 * Use with care.
68 */
69 #define ACPI_GET8(ptr) *ACPI_CAST_PTR (u8, ptr)
70 #define ACPI_GET16(ptr) *ACPI_CAST_PTR (u16, ptr)
71 #define ACPI_GET32(ptr) *ACPI_CAST_PTR (u32, ptr)
72 #define ACPI_GET64(ptr) *ACPI_CAST_PTR (u64, ptr)
73 #define ACPI_SET8(ptr) *ACPI_CAST_PTR (u8, ptr)
74 #define ACPI_SET16(ptr) *ACPI_CAST_PTR (u16, ptr)
75 #define ACPI_SET32(ptr) *ACPI_CAST_PTR (u32, ptr)
76 #define ACPI_SET64(ptr) *ACPI_CAST_PTR (u64, ptr)
77
78 /*
79 * Pointer manipulation
80 */
81 #define ACPI_CAST_PTR(t, p) ((t *) (acpi_uintptr_t) (p))
82 #define ACPI_CAST_INDIRECT_PTR(t, p) ((t **) (acpi_uintptr_t) (p))
83 #define ACPI_ADD_PTR(t, a, b) ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8, (a)) + (acpi_size)(b)))
84 #define ACPI_PTR_DIFF(a, b) (acpi_size) (ACPI_CAST_PTR (u8, (a)) - ACPI_CAST_PTR (u8, (b)))
85
86 /* Pointer/Integer type conversions */
87
88 #define ACPI_TO_POINTER(i) ACPI_ADD_PTR (void, (void *) NULL, (acpi_size) i)
89 #define ACPI_TO_INTEGER(p) ACPI_PTR_DIFF (p, (void *) NULL)
90 #define ACPI_OFFSET(d, f) (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f), (void *) NULL)
91 #define ACPI_PHYSADDR_TO_PTR(i) ACPI_TO_POINTER(i)
92 #define ACPI_PTR_TO_PHYSADDR(i) ACPI_TO_INTEGER(i)
93
94 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
95 #define ACPI_COMPARE_NAME(a, b) (*ACPI_CAST_PTR (u32, (a)) == *ACPI_CAST_PTR (u32, (b)))
96 #else
97 #define ACPI_COMPARE_NAME(a, b) (!ACPI_STRNCMP (ACPI_CAST_PTR (char, (a)), ACPI_CAST_PTR (char, (b)), ACPI_NAME_SIZE))
98 #endif
99
100 /*
101 * Full 64-bit integer must be available on both 32-bit and 64-bit platforms
102 */
103 struct acpi_integer_overlay {
104 u32 lo_dword;
105 u32 hi_dword;
106 };
107
108 #define ACPI_LODWORD(integer) (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->lo_dword)
109 #define ACPI_HIDWORD(integer) (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->hi_dword)
110
111 /*
112 * printf() format helpers
113 */
114
115 /* Split 64-bit integer into two 32-bit values. Use with %8.8_x%8.8_x */
116
117 #define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i), ACPI_LODWORD(i)
118
119 #if ACPI_MACHINE_WIDTH == 64
120 #define ACPI_FORMAT_NATIVE_UINT(i) ACPI_FORMAT_UINT64(i)
121 #else
122 #define ACPI_FORMAT_NATIVE_UINT(i) 0, (i)
123 #endif
124
125 /*
126 * Macros for moving data around to/from buffers that are possibly unaligned.
127 * If the hardware supports the transfer of unaligned data, just do the store.
128 * Otherwise, we have to move one byte at a time.
129 */
130 #ifdef ACPI_BIG_ENDIAN
131 /*
132 * Macros for big-endian machines
133 */
134
135 /* These macros reverse the bytes during the move, converting little-endian to big endian */
136
137 /* Big Endian <== Little Endian */
138 /* Hi...Lo Lo...Hi */
139 /* 16-bit source, 16/32/64 destination */
140
141 #define ACPI_MOVE_16_TO_16(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\
142 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];}
143
144 #define ACPI_MOVE_16_TO_32(d, s) {(*(u32 *)(void *)(d))=0;\
145 ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
146 ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
147
148 #define ACPI_MOVE_16_TO_64(d, s) {(*(u64 *)(void *)(d))=0;\
149 ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
150 ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
151
152 /* 32-bit source, 16/32/64 destination */
153
154 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
155
156 #define ACPI_MOVE_32_TO_32(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\
157 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\
158 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
159 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
160
161 #define ACPI_MOVE_32_TO_64(d, s) {(*(u64 *)(void *)(d))=0;\
162 ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
163 ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
164 ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
165 ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
166
167 /* 64-bit source, 16/32/64 destination */
168
169 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
170
171 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
172
173 #define ACPI_MOVE_64_TO_64(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\
174 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\
175 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\
176 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\
177 (( u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
178 (( u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
179 (( u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
180 (( u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
181 #else
182 /*
183 * Macros for little-endian machines
184 */
185
186 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
187
188 /* The hardware supports unaligned transfers, just do the little-endian move */
189
190 /* 16-bit source, 16/32/64 destination */
191
192 #define ACPI_MOVE_16_TO_16(d, s) *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
193 #define ACPI_MOVE_16_TO_32(d, s) *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
194 #define ACPI_MOVE_16_TO_64(d, s) *(u64 *)(void *)(d) = *(u16 *)(void *)(s)
195
196 /* 32-bit source, 16/32/64 destination */
197
198 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
199 #define ACPI_MOVE_32_TO_32(d, s) *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
200 #define ACPI_MOVE_32_TO_64(d, s) *(u64 *)(void *)(d) = *(u32 *)(void *)(s)
201
202 /* 64-bit source, 16/32/64 destination */
203
204 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
205 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
206 #define ACPI_MOVE_64_TO_64(d, s) *(u64 *)(void *)(d) = *(u64 *)(void *)(s)
207
208 #else
209 /*
210 * The hardware does not support unaligned transfers. We must move the
211 * data one byte at a time. These macros work whether the source or
212 * the destination (or both) is/are unaligned. (Little-endian move)
213 */
214
215 /* 16-bit source, 16/32/64 destination */
216
217 #define ACPI_MOVE_16_TO_16(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
218 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];}
219
220 #define ACPI_MOVE_16_TO_32(d, s) {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
221 #define ACPI_MOVE_16_TO_64(d, s) {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
222
223 /* 32-bit source, 16/32/64 destination */
224
225 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
226
227 #define ACPI_MOVE_32_TO_32(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
228 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
229 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
230 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];}
231
232 #define ACPI_MOVE_32_TO_64(d, s) {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}
233
234 /* 64-bit source, 16/32/64 destination */
235
236 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
237 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
238 #define ACPI_MOVE_64_TO_64(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
239 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
240 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
241 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\
242 (( u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[4];\
243 (( u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[5];\
244 (( u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[6];\
245 (( u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[7];}
246 #endif
247 #endif
248
249 /* Macros based on machine integer width */
250
251 #if ACPI_MACHINE_WIDTH == 32
252 #define ACPI_MOVE_SIZE_TO_16(d, s) ACPI_MOVE_32_TO_16(d, s)
253
254 #elif ACPI_MACHINE_WIDTH == 64
255 #define ACPI_MOVE_SIZE_TO_16(d, s) ACPI_MOVE_64_TO_16(d, s)
256
257 #else
258 #error unknown ACPI_MACHINE_WIDTH
259 #endif
260
261 /*
262 * Fast power-of-two math macros for non-optimized compilers
263 */
264 #define _ACPI_DIV(value, power_of2) ((u32) ((value) >> (power_of2)))
265 #define _ACPI_MUL(value, power_of2) ((u32) ((value) << (power_of2)))
266 #define _ACPI_MOD(value, divisor) ((u32) ((value) & ((divisor) -1)))
267
268 #define ACPI_DIV_2(a) _ACPI_DIV(a, 1)
269 #define ACPI_MUL_2(a) _ACPI_MUL(a, 1)
270 #define ACPI_MOD_2(a) _ACPI_MOD(a, 2)
271
272 #define ACPI_DIV_4(a) _ACPI_DIV(a, 2)
273 #define ACPI_MUL_4(a) _ACPI_MUL(a, 2)
274 #define ACPI_MOD_4(a) _ACPI_MOD(a, 4)
275
276 #define ACPI_DIV_8(a) _ACPI_DIV(a, 3)
277 #define ACPI_MUL_8(a) _ACPI_MUL(a, 3)
278 #define ACPI_MOD_8(a) _ACPI_MOD(a, 8)
279
280 #define ACPI_DIV_16(a) _ACPI_DIV(a, 4)
281 #define ACPI_MUL_16(a) _ACPI_MUL(a, 4)
282 #define ACPI_MOD_16(a) _ACPI_MOD(a, 16)
283
284 #define ACPI_DIV_32(a) _ACPI_DIV(a, 5)
285 #define ACPI_MUL_32(a) _ACPI_MUL(a, 5)
286 #define ACPI_MOD_32(a) _ACPI_MOD(a, 32)
287
288 /*
289 * Rounding macros (Power of two boundaries only)
290 */
291 #define ACPI_ROUND_DOWN(value, boundary) (((acpi_size)(value)) & \
292 (~(((acpi_size) boundary)-1)))
293
294 #define ACPI_ROUND_UP(value, boundary) ((((acpi_size)(value)) + \
295 (((acpi_size) boundary)-1)) & \
296 (~(((acpi_size) boundary)-1)))
297
298 /* Note: sizeof(acpi_size) evaluates to either 4 or 8 (32- vs 64-bit mode) */
299
300 #define ACPI_ROUND_DOWN_TO_32BIT(a) ACPI_ROUND_DOWN(a, 4)
301 #define ACPI_ROUND_DOWN_TO_64BIT(a) ACPI_ROUND_DOWN(a, 8)
302 #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a) ACPI_ROUND_DOWN(a, sizeof(acpi_size))
303
304 #define ACPI_ROUND_UP_TO_32BIT(a) ACPI_ROUND_UP(a, 4)
305 #define ACPI_ROUND_UP_TO_64BIT(a) ACPI_ROUND_UP(a, 8)
306 #define ACPI_ROUND_UP_TO_NATIVE_WORD(a) ACPI_ROUND_UP(a, sizeof(acpi_size))
307
308 #define ACPI_ROUND_BITS_UP_TO_BYTES(a) ACPI_DIV_8((a) + 7)
309 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a) ACPI_DIV_8((a))
310
311 #define ACPI_ROUND_UP_TO_1K(a) (((a) + 1023) >> 10)
312
313 /* Generic (non-power-of-two) rounding */
314
315 #define ACPI_ROUND_UP_TO(value, boundary) (((value) + ((boundary)-1)) / (boundary))
316
317 #define ACPI_IS_MISALIGNED(value) (((acpi_size) value) & (sizeof(acpi_size)-1))
318
319 /*
320 * Bitmask creation
321 * Bit positions start at zero.
322 * MASK_BITS_ABOVE creates a mask starting AT the position and above
323 * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
324 */
325 #define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_INTEGER_MAX) << ((u32) (position))))
326 #define ACPI_MASK_BITS_BELOW(position) ((ACPI_INTEGER_MAX) << ((u32) (position)))
327
328 /* Bitfields within ACPI registers */
329
330 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask) ((val << pos) & mask)
331 #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val) reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)
332
333 #define ACPI_INSERT_BITS(target, mask, source) target = ((target & (~(mask))) | (source & mask))
334
335 /*
336 * An struct acpi_namespace_node can appear in some contexts
337 * where a pointer to an union acpi_operand_object can also
338 * appear. This macro is used to distinguish them.
339 *
340 * The "Descriptor" field is the first field in both structures.
341 */
342 #define ACPI_GET_DESCRIPTOR_TYPE(d) (((union acpi_descriptor *)(void *)(d))->common.descriptor_type)
343 #define ACPI_SET_DESCRIPTOR_TYPE(d, t) (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = t)
344
345 /* Macro to test the object type */
346
347 #define ACPI_GET_OBJECT_TYPE(d) (((union acpi_operand_object *)(void *)(d))->common.type)
348
349 /*
350 * Macros for the master AML opcode table
351 */
352 #if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
353 #define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \
354 {name, (u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
355 #else
356 #define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \
357 {(u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
358 #endif
359
360 #ifdef ACPI_DISASSEMBLER
361 #define ACPI_DISASM_ONLY_MEMBERS(a) a;
362 #else
363 #define ACPI_DISASM_ONLY_MEMBERS(a)
364 #endif
365
366 #define ARG_TYPE_WIDTH 5
367 #define ARG_1(x) ((u32)(x))
368 #define ARG_2(x) ((u32)(x) << (1 * ARG_TYPE_WIDTH))
369 #define ARG_3(x) ((u32)(x) << (2 * ARG_TYPE_WIDTH))
370 #define ARG_4(x) ((u32)(x) << (3 * ARG_TYPE_WIDTH))
371 #define ARG_5(x) ((u32)(x) << (4 * ARG_TYPE_WIDTH))
372 #define ARG_6(x) ((u32)(x) << (5 * ARG_TYPE_WIDTH))
373
374 #define ARGI_LIST1(a) (ARG_1(a))
375 #define ARGI_LIST2(a, b) (ARG_1(b)|ARG_2(a))
376 #define ARGI_LIST3(a, b, c) (ARG_1(c)|ARG_2(b)|ARG_3(a))
377 #define ARGI_LIST4(a, b, c, d) (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
378 #define ARGI_LIST5(a, b, c, d, e) (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
379 #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))
380
381 #define ARGP_LIST1(a) (ARG_1(a))
382 #define ARGP_LIST2(a, b) (ARG_1(a)|ARG_2(b))
383 #define ARGP_LIST3(a, b, c) (ARG_1(a)|ARG_2(b)|ARG_3(c))
384 #define ARGP_LIST4(a, b, c, d) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
385 #define ARGP_LIST5(a, b, c, d, e) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
386 #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))
387
388 #define GET_CURRENT_ARG_TYPE(list) (list & ((u32) 0x1F))
389 #define INCREMENT_ARG_LIST(list) (list >>= ((u32) ARG_TYPE_WIDTH))
390
391 #if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
392 /*
393 * Module name is include in both debug and non-debug versions primarily for
394 * error messages. The __FILE__ macro is not very useful for this, because it
395 * often includes the entire pathname to the module
396 */
397 #define ACPI_MODULE_NAME(name) static const char ACPI_UNUSED_VAR _acpi_module_name[] = name;
398 #else
399 #define ACPI_MODULE_NAME(name)
400 #endif
401
402 /*
403 * Ascii error messages can be configured out
404 */
405 #ifndef ACPI_NO_ERROR_MESSAGES
406 #define AE_INFO _acpi_module_name, __LINE__
407
408 /*
409 * Error reporting. Callers module and line number are inserted by AE_INFO,
410 * the plist contains a set of parens to allow variable-length lists.
411 * These macros are used for both the debug and non-debug versions of the code.
412 */
413 #define ACPI_INFO(plist) acpi_ut_info plist
414 #define ACPI_WARNING(plist) acpi_ut_warning plist
415 #define ACPI_EXCEPTION(plist) acpi_ut_exception plist
416 #define ACPI_ERROR(plist) acpi_ut_error plist
417 #define ACPI_ERROR_NAMESPACE(s, e) acpi_ns_report_error (AE_INFO, s, e);
418 #define ACPI_ERROR_METHOD(s, n, p, e) acpi_ns_report_method_error (AE_INFO, s, n, p, e);
419
420 #else
421
422 /* No error messages */
423
424 #define ACPI_INFO(plist)
425 #define ACPI_WARNING(plist)
426 #define ACPI_EXCEPTION(plist)
427 #define ACPI_ERROR(plist)
428 #define ACPI_ERROR_NAMESPACE(s, e)
429 #define ACPI_ERROR_METHOD(s, n, p, e)
430 #endif
431
432 /*
433 * Debug macros that are conditionally compiled
434 */
435 #ifdef ACPI_DEBUG_OUTPUT
436
437 /*
438 * Common parameters used for debug output functions:
439 * line number, function name, module(file) name, component ID
440 */
441 #define ACPI_DEBUG_PARAMETERS __LINE__, ACPI_GET_FUNCTION_NAME, _acpi_module_name, _COMPONENT
442
443 /*
444 * Function entry tracing
445 */
446
447 /*
448 * If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
449 * define it now. This is the case where there the compiler does not support
450 * a __func__ macro or equivalent.
451 */
452 #ifndef ACPI_GET_FUNCTION_NAME
453 #define ACPI_GET_FUNCTION_NAME _acpi_function_name
454 /*
455 * The Name parameter should be the procedure name as a quoted string.
456 * The function name is also used by the function exit macros below.
457 * Note: (const char) is used to be compatible with the debug interfaces
458 * and macros such as __func__.
459 */
460 #define ACPI_FUNCTION_NAME(name) static const char _acpi_function_name[] = #name;
461
462 #else
463 /* Compiler supports __func__ (or equivalent) -- Ignore this macro */
464
465 #define ACPI_FUNCTION_NAME(name)
466 #endif
467
468 #ifdef CONFIG_ACPI_DEBUG_FUNC_TRACE
469
470 #define ACPI_FUNCTION_TRACE(a) ACPI_FUNCTION_NAME(a) \
471 acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
472 #define ACPI_FUNCTION_TRACE_PTR(a, b) ACPI_FUNCTION_NAME(a) \
473 acpi_ut_trace_ptr(ACPI_DEBUG_PARAMETERS, (void *)b)
474 #define ACPI_FUNCTION_TRACE_U32(a, b) ACPI_FUNCTION_NAME(a) \
475 acpi_ut_trace_u32(ACPI_DEBUG_PARAMETERS, (u32)b)
476 #define ACPI_FUNCTION_TRACE_STR(a, b) ACPI_FUNCTION_NAME(a) \
477 acpi_ut_trace_str(ACPI_DEBUG_PARAMETERS, (char *)b)
478
479 #define ACPI_FUNCTION_ENTRY() acpi_ut_track_stack_ptr()
480
481 /*
482 * Function exit tracing.
483 * WARNING: These macros include a return statement. This is usually considered
484 * bad form, but having a separate exit macro is very ugly and difficult to maintain.
485 * One of the FUNCTION_TRACE macros above must be used in conjunction with these macros
486 * so that "_AcpiFunctionName" is defined.
487 *
488 * Note: the DO_WHILE0 macro is used to prevent some compilers from complaining
489 * about these constructs.
490 */
491 #ifdef ACPI_USE_DO_WHILE_0
492 #define ACPI_DO_WHILE0(a) do a while(0)
493 #else
494 #define ACPI_DO_WHILE0(a) a
495 #endif
496
497 #define return_VOID ACPI_DO_WHILE0 ({ \
498 acpi_ut_exit (ACPI_DEBUG_PARAMETERS); \
499 return;})
500 /*
501 * There are two versions of most of the return macros. The default version is
502 * safer, since it avoids side-effects by guaranteeing that the argument will
503 * not be evaluated twice.
504 *
505 * A less-safe version of the macros is provided for optional use if the
506 * compiler uses excessive CPU stack (for example, this may happen in the
507 * debug case if code optimzation is disabled.)
508 */
509 #ifndef ACPI_SIMPLE_RETURN_MACROS
510
511 #define return_ACPI_STATUS(s) ACPI_DO_WHILE0 ({ \
512 register acpi_status _s = (s); \
513 acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, _s); \
514 return (_s); })
515 #define return_PTR(s) ACPI_DO_WHILE0 ({ \
516 register void *_s = (void *) (s); \
517 acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) _s); \
518 return (_s); })
519 #define return_VALUE(s) ACPI_DO_WHILE0 ({ \
520 register acpi_integer _s = (s); \
521 acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, _s); \
522 return (_s); })
523 #define return_UINT8(s) ACPI_DO_WHILE0 ({ \
524 register u8 _s = (u8) (s); \
525 acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
526 return (_s); })
527 #define return_UINT32(s) ACPI_DO_WHILE0 ({ \
528 register u32 _s = (u32) (s); \
529 acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
530 return (_s); })
531 #else /* Use original less-safe macros */
532
533 #define return_ACPI_STATUS(s) ACPI_DO_WHILE0 ({ \
534 acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, (s)); \
535 return((s)); })
536 #define return_PTR(s) ACPI_DO_WHILE0 ({ \
537 acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) (s)); \
538 return((s)); })
539 #define return_VALUE(s) ACPI_DO_WHILE0 ({ \
540 acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) (s)); \
541 return((s)); })
542 #define return_UINT8(s) return_VALUE(s)
543 #define return_UINT32(s) return_VALUE(s)
544
545 #endif /* ACPI_SIMPLE_RETURN_MACROS */
546
547 #else /* !CONFIG_ACPI_DEBUG_FUNC_TRACE */
548
549 #define ACPI_FUNCTION_TRACE(a)
550 #define ACPI_FUNCTION_TRACE_PTR(a,b)
551 #define ACPI_FUNCTION_TRACE_U32(a,b)
552 #define ACPI_FUNCTION_TRACE_STR(a,b)
553 #define ACPI_FUNCTION_EXIT
554 #define ACPI_FUNCTION_STATUS_EXIT(s)
555 #define ACPI_FUNCTION_VALUE_EXIT(s)
556 #define ACPI_FUNCTION_TRACE(a)
557 #define ACPI_FUNCTION_ENTRY()
558
559 #define return_VOID return
560 #define return_ACPI_STATUS(s) return(s)
561 #define return_VALUE(s) return(s)
562 #define return_UINT8(s) return(s)
563 #define return_UINT32(s) return(s)
564 #define return_PTR(s) return(s)
565
566 #endif /* CONFIG_ACPI_DEBUG_FUNC_TRACE */
567
568 /* Conditional execution */
569
570 #define ACPI_DEBUG_EXEC(a) a
571 #define ACPI_NORMAL_EXEC(a)
572
573 #define ACPI_DEBUG_DEFINE(a) a;
574 #define ACPI_DEBUG_ONLY_MEMBERS(a) a;
575 #define _VERBOSE_STRUCTURES
576
577 /* Stack and buffer dumping */
578
579 #define ACPI_DUMP_STACK_ENTRY(a) acpi_ex_dump_operand((a), 0)
580 #define ACPI_DUMP_OPERANDS(a, b, c) acpi_ex_dump_operands(a, b, c)
581
582 #define ACPI_DUMP_ENTRY(a, b) acpi_ns_dump_entry (a, b)
583 #define ACPI_DUMP_PATHNAME(a, b, c, d) acpi_ns_dump_pathname(a, b, c, d)
584 #define ACPI_DUMP_RESOURCE_LIST(a) acpi_rs_dump_resource_list(a)
585 #define ACPI_DUMP_BUFFER(a, b) acpi_ut_dump_buffer((u8 *) a, b, DB_BYTE_DISPLAY, _COMPONENT)
586
587 /*
588 * Master debug print macros
589 * Print iff:
590 * 1) Debug print for the current component is enabled
591 * 2) Debug error level or trace level for the print statement is enabled
592 */
593 #define ACPI_DEBUG_PRINT(plist) acpi_ut_debug_print plist
594 #define ACPI_DEBUG_PRINT_RAW(plist) acpi_ut_debug_print_raw plist
595
596 #else
597 /*
598 * This is the non-debug case -- make everything go away,
599 * leaving no executable debug code!
600 */
601 #define ACPI_DEBUG_EXEC(a)
602 #define ACPI_NORMAL_EXEC(a) a;
603
604 #define ACPI_DEBUG_DEFINE(a) do { } while(0)
605 #define ACPI_DEBUG_ONLY_MEMBERS(a) do { } while(0)
606 #define ACPI_FUNCTION_NAME(a) do { } while(0)
607 #define ACPI_FUNCTION_TRACE(a) do { } while(0)
608 #define ACPI_FUNCTION_TRACE_PTR(a, b) do { } while(0)
609 #define ACPI_FUNCTION_TRACE_U32(a, b) do { } while(0)
610 #define ACPI_FUNCTION_TRACE_STR(a, b) do { } while(0)
611 #define ACPI_FUNCTION_EXIT do { } while(0)
612 #define ACPI_FUNCTION_STATUS_EXIT(s) do { } while(0)
613 #define ACPI_FUNCTION_VALUE_EXIT(s) do { } while(0)
614 #define ACPI_FUNCTION_ENTRY() do { } while(0)
615 #define ACPI_DUMP_STACK_ENTRY(a) do { } while(0)
616 #define ACPI_DUMP_OPERANDS(a, b, c) do { } while(0)
617 #define ACPI_DUMP_ENTRY(a, b) do { } while(0)
618 #define ACPI_DUMP_TABLES(a, b) do { } while(0)
619 #define ACPI_DUMP_PATHNAME(a, b, c, d) do { } while(0)
620 #define ACPI_DUMP_RESOURCE_LIST(a) do { } while(0)
621 #define ACPI_DUMP_BUFFER(a, b) do { } while(0)
622 #define ACPI_DEBUG_PRINT(pl) do { } while(0)
623 #define ACPI_DEBUG_PRINT_RAW(pl) do { } while(0)
624
625 #define return_VOID return
626 #define return_ACPI_STATUS(s) return(s)
627 #define return_VALUE(s) return(s)
628 #define return_UINT8(s) return(s)
629 #define return_UINT32(s) return(s)
630 #define return_PTR(s) return(s)
631
632 #endif
633
634 /*
635 * Some code only gets executed when the debugger is built in.
636 * Note that this is entirely independent of whether the
637 * DEBUG_PRINT stuff (set by ACPI_DEBUG_OUTPUT) is on, or not.
638 */
639 #ifdef ACPI_DEBUGGER
640 #define ACPI_DEBUGGER_EXEC(a) a
641 #else
642 #define ACPI_DEBUGGER_EXEC(a)
643 #endif
644
645 #ifdef ACPI_DEBUG_OUTPUT
646 /*
647 * 1) Set name to blanks
648 * 2) Copy the object name
649 */
650 #define ACPI_ADD_OBJECT_NAME(a,b) ACPI_MEMSET (a->common.name, ' ', sizeof (a->common.name));\
651 ACPI_STRNCPY (a->common.name, acpi_gbl_ns_type_names[b], sizeof (a->common.name))
652 #else
653
654 #define ACPI_ADD_OBJECT_NAME(a,b)
655 #endif
656
657 /*
658 * Memory allocation tracking (DEBUG ONLY)
659 */
660 #define ACPI_MEM_PARAMETERS _COMPONENT, _acpi_module_name, __LINE__
661
662 #ifndef ACPI_DBG_TRACK_ALLOCATIONS
663
664 /* Memory allocation */
665
666 #ifndef ACPI_ALLOCATE
667 #define ACPI_ALLOCATE(a) acpi_ut_allocate((acpi_size)(a), ACPI_MEM_PARAMETERS)
668 #endif
669 #ifndef ACPI_ALLOCATE_ZEROED
670 #define ACPI_ALLOCATE_ZEROED(a) acpi_ut_allocate_zeroed((acpi_size)(a), ACPI_MEM_PARAMETERS)
671 #endif
672 #ifndef ACPI_FREE
673 #define ACPI_FREE(a) acpio_os_free(a)
674 #endif
675 #define ACPI_MEM_TRACKING(a)
676
677 #else
678
679 /* Memory allocation */
680
681 #define ACPI_ALLOCATE(a) acpi_ut_allocate_and_track((acpi_size)(a), ACPI_MEM_PARAMETERS)
682 #define ACPI_ALLOCATE_ZEROED(a) acpi_ut_allocate_zeroed_and_track((acpi_size)(a), ACPI_MEM_PARAMETERS)
683 #define ACPI_FREE(a) acpi_ut_free_and_track(a, ACPI_MEM_PARAMETERS)
684 #define ACPI_MEM_TRACKING(a) a
685
686 #endif /* ACPI_DBG_TRACK_ALLOCATIONS */
687
688 /* Preemption point */
689 #ifndef ACPI_PREEMPTION_POINT
690 #define ACPI_PREEMPTION_POINT() /* no preemption */
691 #endif
692
693 #endif /* ACMACROS_H */
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