1 /******************************************************************************
3 * Name: acmacros.h - C macros for the entire subsystem.
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2014, Intel Corp.
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44 #ifndef __ACMACROS_H__
45 #define __ACMACROS_H__
49 * Extract data using a pointer. Any more than a byte and we
50 * get into potential aligment issues -- see the STORE macros below.
53 #define ACPI_CAST8(ptr) ACPI_CAST_PTR (UINT8, (ptr))
54 #define ACPI_CAST16(ptr) ACPI_CAST_PTR (UINT16, (ptr))
55 #define ACPI_CAST32(ptr) ACPI_CAST_PTR (UINT32, (ptr))
56 #define ACPI_CAST64(ptr) ACPI_CAST_PTR (UINT64, (ptr))
57 #define ACPI_GET8(ptr) (*ACPI_CAST8 (ptr))
58 #define ACPI_GET16(ptr) (*ACPI_CAST16 (ptr))
59 #define ACPI_GET32(ptr) (*ACPI_CAST32 (ptr))
60 #define ACPI_GET64(ptr) (*ACPI_CAST64 (ptr))
61 #define ACPI_SET8(ptr, val) (*ACPI_CAST8 (ptr) = (UINT8) (val))
62 #define ACPI_SET16(ptr, val) (*ACPI_CAST16 (ptr) = (UINT16) (val))
63 #define ACPI_SET32(ptr, val) (*ACPI_CAST32 (ptr) = (UINT32) (val))
64 #define ACPI_SET64(ptr, val) (*ACPI_CAST64 (ptr) = (UINT64) (val))
67 * printf() format helpers. These macros are workarounds for the difficulties
68 * with emitting 64-bit integers and 64-bit pointers with the same code
69 * for both 32-bit and 64-bit hosts.
71 #define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i), ACPI_LODWORD(i)
73 #if ACPI_MACHINE_WIDTH == 64
74 #define ACPI_FORMAT_NATIVE_UINT(i) ACPI_FORMAT_UINT64(i)
75 #define ACPI_FORMAT_TO_UINT(i) ACPI_FORMAT_UINT64(i)
76 #define ACPI_PRINTF_UINT "0x%8.8X%8.8X"
79 #define ACPI_FORMAT_NATIVE_UINT(i) 0, (UINT32) (i)
80 #define ACPI_FORMAT_TO_UINT(i) (UINT32) (i)
81 #define ACPI_PRINTF_UINT "0x%8.8X"
86 * Macros for moving data around to/from buffers that are possibly unaligned.
87 * If the hardware supports the transfer of unaligned data, just do the store.
88 * Otherwise, we have to move one byte at a time.
90 #ifdef ACPI_BIG_ENDIAN
92 * Macros for big-endian machines
95 /* These macros reverse the bytes during the move, converting little-endian to big endian */
97 /* Big Endian <== Little Endian */
99 /* 16-bit source, 16/32/64 destination */
101 #define ACPI_MOVE_16_TO_16(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[1];\
102 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[0];}
104 #define ACPI_MOVE_16_TO_32(d, s) {(*(UINT32 *)(void *)(d))=0;\
105 ((UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
106 ((UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}
108 #define ACPI_MOVE_16_TO_64(d, s) {(*(UINT64 *)(void *)(d))=0;\
109 ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
110 ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
112 /* 32-bit source, 16/32/64 destination */
114 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
116 #define ACPI_MOVE_32_TO_32(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[3];\
117 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[2];\
118 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
119 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}
121 #define ACPI_MOVE_32_TO_64(d, s) {(*(UINT64 *)(void *)(d))=0;\
122 ((UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
123 ((UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
124 ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
125 ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
127 /* 64-bit source, 16/32/64 destination */
129 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
131 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
133 #define ACPI_MOVE_64_TO_64(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[7];\
134 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[6];\
135 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[5];\
136 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[4];\
137 (( UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
138 (( UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
139 (( UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
140 (( UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
143 * Macros for little-endian machines
146 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
148 /* The hardware supports unaligned transfers, just do the little-endian move */
150 /* 16-bit source, 16/32/64 destination */
152 #define ACPI_MOVE_16_TO_16(d, s) *(UINT16 *)(void *)(d) = *(UINT16 *)(void *)(s)
153 #define ACPI_MOVE_16_TO_32(d, s) *(UINT32 *)(void *)(d) = *(UINT16 *)(void *)(s)
154 #define ACPI_MOVE_16_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT16 *)(void *)(s)
156 /* 32-bit source, 16/32/64 destination */
158 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
159 #define ACPI_MOVE_32_TO_32(d, s) *(UINT32 *)(void *)(d) = *(UINT32 *)(void *)(s)
160 #define ACPI_MOVE_32_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT32 *)(void *)(s)
162 /* 64-bit source, 16/32/64 destination */
164 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
165 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
166 #define ACPI_MOVE_64_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT64 *)(void *)(s)
170 * The hardware does not support unaligned transfers. We must move the
171 * data one byte at a time. These macros work whether the source or
172 * the destination (or both) is/are unaligned. (Little-endian move)
175 /* 16-bit source, 16/32/64 destination */
177 #define ACPI_MOVE_16_TO_16(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
178 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];}
180 #define ACPI_MOVE_16_TO_32(d, s) {(*(UINT32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
181 #define ACPI_MOVE_16_TO_64(d, s) {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
183 /* 32-bit source, 16/32/64 destination */
185 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
187 #define ACPI_MOVE_32_TO_32(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
188 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
189 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
190 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];}
192 #define ACPI_MOVE_32_TO_64(d, s) {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}
194 /* 64-bit source, 16/32/64 destination */
196 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
197 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
198 #define ACPI_MOVE_64_TO_64(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
199 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
200 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
201 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];\
202 (( UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[4];\
203 (( UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[5];\
204 (( UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[6];\
205 (( UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[7];}
211 * Fast power-of-two math macros for non-optimized compilers
213 #define _ACPI_DIV(value, PowerOf2) ((UINT32) ((value) >> (PowerOf2)))
214 #define _ACPI_MUL(value, PowerOf2) ((UINT32) ((value) << (PowerOf2)))
215 #define _ACPI_MOD(value, Divisor) ((UINT32) ((value) & ((Divisor) -1)))
217 #define ACPI_DIV_2(a) _ACPI_DIV(a, 1)
218 #define ACPI_MUL_2(a) _ACPI_MUL(a, 1)
219 #define ACPI_MOD_2(a) _ACPI_MOD(a, 2)
221 #define ACPI_DIV_4(a) _ACPI_DIV(a, 2)
222 #define ACPI_MUL_4(a) _ACPI_MUL(a, 2)
223 #define ACPI_MOD_4(a) _ACPI_MOD(a, 4)
225 #define ACPI_DIV_8(a) _ACPI_DIV(a, 3)
226 #define ACPI_MUL_8(a) _ACPI_MUL(a, 3)
227 #define ACPI_MOD_8(a) _ACPI_MOD(a, 8)
229 #define ACPI_DIV_16(a) _ACPI_DIV(a, 4)
230 #define ACPI_MUL_16(a) _ACPI_MUL(a, 4)
231 #define ACPI_MOD_16(a) _ACPI_MOD(a, 16)
233 #define ACPI_DIV_32(a) _ACPI_DIV(a, 5)
234 #define ACPI_MUL_32(a) _ACPI_MUL(a, 5)
235 #define ACPI_MOD_32(a) _ACPI_MOD(a, 32)
238 * Rounding macros (Power of two boundaries only)
240 #define ACPI_ROUND_DOWN(value, boundary) (((ACPI_SIZE)(value)) & \
241 (~(((ACPI_SIZE) boundary)-1)))
243 #define ACPI_ROUND_UP(value, boundary) ((((ACPI_SIZE)(value)) + \
244 (((ACPI_SIZE) boundary)-1)) & \
245 (~(((ACPI_SIZE) boundary)-1)))
247 /* Note: sizeof(ACPI_SIZE) evaluates to either 4 or 8 (32- vs 64-bit mode) */
249 #define ACPI_ROUND_DOWN_TO_32BIT(a) ACPI_ROUND_DOWN(a, 4)
250 #define ACPI_ROUND_DOWN_TO_64BIT(a) ACPI_ROUND_DOWN(a, 8)
251 #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a) ACPI_ROUND_DOWN(a, sizeof(ACPI_SIZE))
253 #define ACPI_ROUND_UP_TO_32BIT(a) ACPI_ROUND_UP(a, 4)
254 #define ACPI_ROUND_UP_TO_64BIT(a) ACPI_ROUND_UP(a, 8)
255 #define ACPI_ROUND_UP_TO_NATIVE_WORD(a) ACPI_ROUND_UP(a, sizeof(ACPI_SIZE))
257 #define ACPI_ROUND_BITS_UP_TO_BYTES(a) ACPI_DIV_8((a) + 7)
258 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a) ACPI_DIV_8((a))
260 #define ACPI_ROUND_UP_TO_1K(a) (((a) + 1023) >> 10)
262 /* Generic (non-power-of-two) rounding */
264 #define ACPI_ROUND_UP_TO(value, boundary) (((value) + ((boundary)-1)) / (boundary))
266 #define ACPI_IS_MISALIGNED(value) (((ACPI_SIZE) value) & (sizeof(ACPI_SIZE)-1))
270 * Bit positions start at zero.
271 * MASK_BITS_ABOVE creates a mask starting AT the position and above
272 * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
274 #define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_UINT64_MAX) << ((UINT32) (position))))
275 #define ACPI_MASK_BITS_BELOW(position) ((ACPI_UINT64_MAX) << ((UINT32) (position)))
277 /* Bitfields within ACPI registers */
279 #define ACPI_REGISTER_PREPARE_BITS(Val, Pos, Mask) \
280 ((Val << Pos) & Mask)
282 #define ACPI_REGISTER_INSERT_VALUE(Reg, Pos, Mask, Val) \
283 Reg = (Reg & (~(Mask))) | ACPI_REGISTER_PREPARE_BITS(Val, Pos, Mask)
285 #define ACPI_INSERT_BITS(Target, Mask, Source) \
286 Target = ((Target & (~(Mask))) | (Source & Mask))
288 /* Generic bitfield macros and masks */
290 #define ACPI_GET_BITS(SourcePtr, Position, Mask) \
291 ((*SourcePtr >> Position) & Mask)
293 #define ACPI_SET_BITS(TargetPtr, Position, Mask, Value) \
294 (*TargetPtr |= ((Value & Mask) << Position))
296 #define ACPI_1BIT_MASK 0x00000001
297 #define ACPI_2BIT_MASK 0x00000003
298 #define ACPI_3BIT_MASK 0x00000007
299 #define ACPI_4BIT_MASK 0x0000000F
300 #define ACPI_5BIT_MASK 0x0000001F
301 #define ACPI_6BIT_MASK 0x0000003F
302 #define ACPI_7BIT_MASK 0x0000007F
303 #define ACPI_8BIT_MASK 0x000000FF
304 #define ACPI_16BIT_MASK 0x0000FFFF
305 #define ACPI_24BIT_MASK 0x00FFFFFF
307 /* Macros to extract flag bits from position zero */
309 #define ACPI_GET_1BIT_FLAG(Value) ((Value) & ACPI_1BIT_MASK)
310 #define ACPI_GET_2BIT_FLAG(Value) ((Value) & ACPI_2BIT_MASK)
311 #define ACPI_GET_3BIT_FLAG(Value) ((Value) & ACPI_3BIT_MASK)
312 #define ACPI_GET_4BIT_FLAG(Value) ((Value) & ACPI_4BIT_MASK)
314 /* Macros to extract flag bits from position one and above */
316 #define ACPI_EXTRACT_1BIT_FLAG(Field, Position) (ACPI_GET_1BIT_FLAG ((Field) >> Position))
317 #define ACPI_EXTRACT_2BIT_FLAG(Field, Position) (ACPI_GET_2BIT_FLAG ((Field) >> Position))
318 #define ACPI_EXTRACT_3BIT_FLAG(Field, Position) (ACPI_GET_3BIT_FLAG ((Field) >> Position))
319 #define ACPI_EXTRACT_4BIT_FLAG(Field, Position) (ACPI_GET_4BIT_FLAG ((Field) >> Position))
321 /* ACPI Pathname helpers */
323 #define ACPI_IS_ROOT_PREFIX(c) ((c) == (UINT8) 0x5C) /* Backslash */
324 #define ACPI_IS_PARENT_PREFIX(c) ((c) == (UINT8) 0x5E) /* Carat */
325 #define ACPI_IS_PATH_SEPARATOR(c) ((c) == (UINT8) 0x2E) /* Period (dot) */
328 * An object of type ACPI_NAMESPACE_NODE can appear in some contexts
329 * where a pointer to an object of type ACPI_OPERAND_OBJECT can also
330 * appear. This macro is used to distinguish them.
332 * The "DescriptorType" field is the second field in both structures.
334 #define ACPI_GET_DESCRIPTOR_PTR(d) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.CommonPointer)
335 #define ACPI_SET_DESCRIPTOR_PTR(d, p) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.CommonPointer = (p))
336 #define ACPI_GET_DESCRIPTOR_TYPE(d) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.DescriptorType)
337 #define ACPI_SET_DESCRIPTOR_TYPE(d, t) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.DescriptorType = (t))
340 * Macros for the master AML opcode table
342 #if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
343 #define ACPI_OP(Name, PArgs, IArgs, ObjType, Class, Type, Flags) \
344 {Name, (UINT32)(PArgs), (UINT32)(IArgs), (UINT32)(Flags), ObjType, Class, Type}
346 #define ACPI_OP(Name, PArgs, IArgs, ObjType, Class, Type, Flags) \
347 {(UINT32)(PArgs), (UINT32)(IArgs), (UINT32)(Flags), ObjType, Class, Type}
350 #define ARG_TYPE_WIDTH 5
351 #define ARG_1(x) ((UINT32)(x))
352 #define ARG_2(x) ((UINT32)(x) << (1 * ARG_TYPE_WIDTH))
353 #define ARG_3(x) ((UINT32)(x) << (2 * ARG_TYPE_WIDTH))
354 #define ARG_4(x) ((UINT32)(x) << (3 * ARG_TYPE_WIDTH))
355 #define ARG_5(x) ((UINT32)(x) << (4 * ARG_TYPE_WIDTH))
356 #define ARG_6(x) ((UINT32)(x) << (5 * ARG_TYPE_WIDTH))
358 #define ARGI_LIST1(a) (ARG_1(a))
359 #define ARGI_LIST2(a, b) (ARG_1(b)|ARG_2(a))
360 #define ARGI_LIST3(a, b, c) (ARG_1(c)|ARG_2(b)|ARG_3(a))
361 #define ARGI_LIST4(a, b, c, d) (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
362 #define ARGI_LIST5(a, b, c, d, e) (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
363 #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))
365 #define ARGP_LIST1(a) (ARG_1(a))
366 #define ARGP_LIST2(a, b) (ARG_1(a)|ARG_2(b))
367 #define ARGP_LIST3(a, b, c) (ARG_1(a)|ARG_2(b)|ARG_3(c))
368 #define ARGP_LIST4(a, b, c, d) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
369 #define ARGP_LIST5(a, b, c, d, e) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
370 #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))
372 #define GET_CURRENT_ARG_TYPE(List) (List & ((UINT32) 0x1F))
373 #define INCREMENT_ARG_LIST(List) (List >>= ((UINT32) ARG_TYPE_WIDTH))
376 * Ascii error messages can be configured out
378 #ifndef ACPI_NO_ERROR_MESSAGES
380 * Error reporting. Callers module and line number are inserted by AE_INFO,
381 * the plist contains a set of parens to allow variable-length lists.
382 * These macros are used for both the debug and non-debug versions of the code.
384 #define ACPI_ERROR_NAMESPACE(s, e) AcpiUtNamespaceError (AE_INFO, s, e);
385 #define ACPI_ERROR_METHOD(s, n, p, e) AcpiUtMethodError (AE_INFO, s, n, p, e);
386 #define ACPI_WARN_PREDEFINED(plist) AcpiUtPredefinedWarning plist
387 #define ACPI_INFO_PREDEFINED(plist) AcpiUtPredefinedInfo plist
388 #define ACPI_BIOS_ERROR_PREDEFINED(plist) AcpiUtPredefinedBiosError plist
392 /* No error messages */
394 #define ACPI_ERROR_NAMESPACE(s, e)
395 #define ACPI_ERROR_METHOD(s, n, p, e)
396 #define ACPI_WARN_PREDEFINED(plist)
397 #define ACPI_INFO_PREDEFINED(plist)
398 #define ACPI_BIOS_ERROR_PREDEFINED(plist)
400 #endif /* ACPI_NO_ERROR_MESSAGES */
402 #if (!ACPI_REDUCED_HARDWARE)
403 #define ACPI_HW_OPTIONAL_FUNCTION(addr) addr
405 #define ACPI_HW_OPTIONAL_FUNCTION(addr) NULL
410 * Some code only gets executed when the debugger is built in.
411 * Note that this is entirely independent of whether the
412 * DEBUG_PRINT stuff (set by ACPI_DEBUG_OUTPUT) is on, or not.
415 #define ACPI_DEBUGGER_EXEC(a) a
417 #define ACPI_DEBUGGER_EXEC(a)
422 * Macros used for ACPICA utilities only
425 /* Generate a UUID */
427 #define ACPI_INIT_UUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
428 (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
429 (b) & 0xFF, ((b) >> 8) & 0xFF, \
430 (c) & 0xFF, ((c) >> 8) & 0xFF, \
431 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
433 #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7'))
436 #endif /* ACMACROS_H */