1 /******************************************************************************
3 * Name: acmacros.h - C macros for the entire subsystem.
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2016, 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 helper. This macros is a workaround 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)
75 * Macros for moving data around to/from buffers that are possibly unaligned.
76 * If the hardware supports the transfer of unaligned data, just do the store.
77 * Otherwise, we have to move one byte at a time.
79 #ifdef ACPI_BIG_ENDIAN
81 * Macros for big-endian machines
84 /* These macros reverse the bytes during the move, converting little-endian to big endian */
86 /* Big Endian <== Little Endian */
88 /* 16-bit source, 16/32/64 destination */
90 #define ACPI_MOVE_16_TO_16(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[1];\
91 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[0];}
93 #define ACPI_MOVE_16_TO_32(d, s) {(*(UINT32 *)(void *)(d))=0;\
94 ((UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
95 ((UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}
97 #define ACPI_MOVE_16_TO_64(d, s) {(*(UINT64 *)(void *)(d))=0;\
98 ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
99 ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
101 /* 32-bit source, 16/32/64 destination */
103 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
105 #define ACPI_MOVE_32_TO_32(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[3];\
106 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[2];\
107 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
108 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}
110 #define ACPI_MOVE_32_TO_64(d, s) {(*(UINT64 *)(void *)(d))=0;\
111 ((UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
112 ((UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
113 ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
114 ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
116 /* 64-bit source, 16/32/64 destination */
118 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
120 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
122 #define ACPI_MOVE_64_TO_64(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[7];\
123 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[6];\
124 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[5];\
125 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[4];\
126 (( UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
127 (( UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
128 (( UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
129 (( UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
132 * Macros for little-endian machines
135 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
137 /* The hardware supports unaligned transfers, just do the little-endian move */
139 /* 16-bit source, 16/32/64 destination */
141 #define ACPI_MOVE_16_TO_16(d, s) *(UINT16 *)(void *)(d) = *(UINT16 *)(void *)(s)
142 #define ACPI_MOVE_16_TO_32(d, s) *(UINT32 *)(void *)(d) = *(UINT16 *)(void *)(s)
143 #define ACPI_MOVE_16_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT16 *)(void *)(s)
145 /* 32-bit source, 16/32/64 destination */
147 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
148 #define ACPI_MOVE_32_TO_32(d, s) *(UINT32 *)(void *)(d) = *(UINT32 *)(void *)(s)
149 #define ACPI_MOVE_32_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT32 *)(void *)(s)
151 /* 64-bit source, 16/32/64 destination */
153 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
154 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
155 #define ACPI_MOVE_64_TO_64(d, s) *(UINT64 *)(void *)(d) = *(UINT64 *)(void *)(s)
159 * The hardware does not support unaligned transfers. We must move the
160 * data one byte at a time. These macros work whether the source or
161 * the destination (or both) is/are unaligned. (Little-endian move)
164 /* 16-bit source, 16/32/64 destination */
166 #define ACPI_MOVE_16_TO_16(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
167 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];}
169 #define ACPI_MOVE_16_TO_32(d, s) {(*(UINT32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
170 #define ACPI_MOVE_16_TO_64(d, s) {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
172 /* 32-bit source, 16/32/64 destination */
174 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
176 #define ACPI_MOVE_32_TO_32(d, s) {(( UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
177 (( UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
178 (( UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
179 (( UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];}
181 #define ACPI_MOVE_32_TO_64(d, s) {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}
183 /* 64-bit source, 16/32/64 destination */
185 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */
186 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */
187 #define ACPI_MOVE_64_TO_64(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];\
191 (( UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[4];\
192 (( UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[5];\
193 (( UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[6];\
194 (( UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[7];}
200 * Fast power-of-two math macros for non-optimized compilers
202 #define _ACPI_DIV(value, PowerOf2) ((UINT32) ((value) >> (PowerOf2)))
203 #define _ACPI_MUL(value, PowerOf2) ((UINT32) ((value) << (PowerOf2)))
204 #define _ACPI_MOD(value, Divisor) ((UINT32) ((value) & ((Divisor) -1)))
206 #define ACPI_DIV_2(a) _ACPI_DIV(a, 1)
207 #define ACPI_MUL_2(a) _ACPI_MUL(a, 1)
208 #define ACPI_MOD_2(a) _ACPI_MOD(a, 2)
210 #define ACPI_DIV_4(a) _ACPI_DIV(a, 2)
211 #define ACPI_MUL_4(a) _ACPI_MUL(a, 2)
212 #define ACPI_MOD_4(a) _ACPI_MOD(a, 4)
214 #define ACPI_DIV_8(a) _ACPI_DIV(a, 3)
215 #define ACPI_MUL_8(a) _ACPI_MUL(a, 3)
216 #define ACPI_MOD_8(a) _ACPI_MOD(a, 8)
218 #define ACPI_DIV_16(a) _ACPI_DIV(a, 4)
219 #define ACPI_MUL_16(a) _ACPI_MUL(a, 4)
220 #define ACPI_MOD_16(a) _ACPI_MOD(a, 16)
222 #define ACPI_DIV_32(a) _ACPI_DIV(a, 5)
223 #define ACPI_MUL_32(a) _ACPI_MUL(a, 5)
224 #define ACPI_MOD_32(a) _ACPI_MOD(a, 32)
226 /* Test for ASCII character */
228 #define ACPI_IS_ASCII(c) ((c) < 0x80)
230 /* Signed integers */
232 #define ACPI_SIGN_POSITIVE 0
233 #define ACPI_SIGN_NEGATIVE 1
237 * Rounding macros (Power of two boundaries only)
239 #define ACPI_ROUND_DOWN(value, boundary) (((ACPI_SIZE)(value)) & \
240 (~(((ACPI_SIZE) boundary)-1)))
242 #define ACPI_ROUND_UP(value, boundary) ((((ACPI_SIZE)(value)) + \
243 (((ACPI_SIZE) boundary)-1)) & \
244 (~(((ACPI_SIZE) boundary)-1)))
246 /* Note: sizeof(ACPI_SIZE) evaluates to either 4 or 8 (32- vs 64-bit mode) */
248 #define ACPI_ROUND_DOWN_TO_32BIT(a) ACPI_ROUND_DOWN(a, 4)
249 #define ACPI_ROUND_DOWN_TO_64BIT(a) ACPI_ROUND_DOWN(a, 8)
250 #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a) ACPI_ROUND_DOWN(a, sizeof(ACPI_SIZE))
252 #define ACPI_ROUND_UP_TO_32BIT(a) ACPI_ROUND_UP(a, 4)
253 #define ACPI_ROUND_UP_TO_64BIT(a) ACPI_ROUND_UP(a, 8)
254 #define ACPI_ROUND_UP_TO_NATIVE_WORD(a) ACPI_ROUND_UP(a, sizeof(ACPI_SIZE))
256 #define ACPI_ROUND_BITS_UP_TO_BYTES(a) ACPI_DIV_8((a) + 7)
257 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a) ACPI_DIV_8((a))
259 #define ACPI_ROUND_UP_TO_1K(a) (((a) + 1023) >> 10)
261 /* Generic (non-power-of-two) rounding */
263 #define ACPI_ROUND_UP_TO(value, boundary) (((value) + ((boundary)-1)) / (boundary))
265 #define ACPI_IS_MISALIGNED(value) (((ACPI_SIZE) value) & (sizeof(ACPI_SIZE)-1))
269 * Bit positions start at zero.
270 * MASK_BITS_ABOVE creates a mask starting AT the position and above
271 * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
273 #define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_UINT64_MAX) << ((UINT32) (position))))
274 #define ACPI_MASK_BITS_BELOW(position) ((ACPI_UINT64_MAX) << ((UINT32) (position)))
276 /* Bitfields within ACPI registers */
278 #define ACPI_REGISTER_PREPARE_BITS(Val, Pos, Mask) \
279 ((Val << Pos) & Mask)
281 #define ACPI_REGISTER_INSERT_VALUE(Reg, Pos, Mask, Val) \
282 Reg = (Reg & (~(Mask))) | ACPI_REGISTER_PREPARE_BITS(Val, Pos, Mask)
284 #define ACPI_INSERT_BITS(Target, Mask, Source) \
285 Target = ((Target & (~(Mask))) | (Source & Mask))
287 /* Generic bitfield macros and masks */
289 #define ACPI_GET_BITS(SourcePtr, Position, Mask) \
290 ((*(SourcePtr) >> (Position)) & (Mask))
292 #define ACPI_SET_BITS(TargetPtr, Position, Mask, Value) \
293 (*(TargetPtr) |= (((Value) & (Mask)) << (Position)))
295 #define ACPI_1BIT_MASK 0x00000001
296 #define ACPI_2BIT_MASK 0x00000003
297 #define ACPI_3BIT_MASK 0x00000007
298 #define ACPI_4BIT_MASK 0x0000000F
299 #define ACPI_5BIT_MASK 0x0000001F
300 #define ACPI_6BIT_MASK 0x0000003F
301 #define ACPI_7BIT_MASK 0x0000007F
302 #define ACPI_8BIT_MASK 0x000000FF
303 #define ACPI_16BIT_MASK 0x0000FFFF
304 #define ACPI_24BIT_MASK 0x00FFFFFF
306 /* Macros to extract flag bits from position zero */
308 #define ACPI_GET_1BIT_FLAG(Value) ((Value) & ACPI_1BIT_MASK)
309 #define ACPI_GET_2BIT_FLAG(Value) ((Value) & ACPI_2BIT_MASK)
310 #define ACPI_GET_3BIT_FLAG(Value) ((Value) & ACPI_3BIT_MASK)
311 #define ACPI_GET_4BIT_FLAG(Value) ((Value) & ACPI_4BIT_MASK)
313 /* Macros to extract flag bits from position one and above */
315 #define ACPI_EXTRACT_1BIT_FLAG(Field, Position) (ACPI_GET_1BIT_FLAG ((Field) >> Position))
316 #define ACPI_EXTRACT_2BIT_FLAG(Field, Position) (ACPI_GET_2BIT_FLAG ((Field) >> Position))
317 #define ACPI_EXTRACT_3BIT_FLAG(Field, Position) (ACPI_GET_3BIT_FLAG ((Field) >> Position))
318 #define ACPI_EXTRACT_4BIT_FLAG(Field, Position) (ACPI_GET_4BIT_FLAG ((Field) >> Position))
320 /* ACPI Pathname helpers */
322 #define ACPI_IS_ROOT_PREFIX(c) ((c) == (UINT8) 0x5C) /* Backslash */
323 #define ACPI_IS_PARENT_PREFIX(c) ((c) == (UINT8) 0x5E) /* Carat */
324 #define ACPI_IS_PATH_SEPARATOR(c) ((c) == (UINT8) 0x2E) /* Period (dot) */
327 * An object of type ACPI_NAMESPACE_NODE can appear in some contexts
328 * where a pointer to an object of type ACPI_OPERAND_OBJECT can also
329 * appear. This macro is used to distinguish them.
331 * The "DescriptorType" field is the second field in both structures.
333 #define ACPI_GET_DESCRIPTOR_PTR(d) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.CommonPointer)
334 #define ACPI_SET_DESCRIPTOR_PTR(d, p) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.CommonPointer = (p))
335 #define ACPI_GET_DESCRIPTOR_TYPE(d) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.DescriptorType)
336 #define ACPI_SET_DESCRIPTOR_TYPE(d, t) (((ACPI_DESCRIPTOR *)(void *)(d))->Common.DescriptorType = (t))
339 * Macros for the master AML opcode table
341 #if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
342 #define ACPI_OP(Name, PArgs, IArgs, ObjType, Class, Type, Flags) \
343 {Name, (UINT32)(PArgs), (UINT32)(IArgs), (UINT32)(Flags), ObjType, Class, Type}
345 #define ACPI_OP(Name, PArgs, IArgs, ObjType, Class, Type, Flags) \
346 {(UINT32)(PArgs), (UINT32)(IArgs), (UINT32)(Flags), ObjType, Class, Type}
349 #define ARG_TYPE_WIDTH 5
350 #define ARG_1(x) ((UINT32)(x))
351 #define ARG_2(x) ((UINT32)(x) << (1 * ARG_TYPE_WIDTH))
352 #define ARG_3(x) ((UINT32)(x) << (2 * ARG_TYPE_WIDTH))
353 #define ARG_4(x) ((UINT32)(x) << (3 * ARG_TYPE_WIDTH))
354 #define ARG_5(x) ((UINT32)(x) << (4 * ARG_TYPE_WIDTH))
355 #define ARG_6(x) ((UINT32)(x) << (5 * ARG_TYPE_WIDTH))
357 #define ARGI_LIST1(a) (ARG_1(a))
358 #define ARGI_LIST2(a, b) (ARG_1(b)|ARG_2(a))
359 #define ARGI_LIST3(a, b, c) (ARG_1(c)|ARG_2(b)|ARG_3(a))
360 #define ARGI_LIST4(a, b, c, d) (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
361 #define ARGI_LIST5(a, b, c, d, e) (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
362 #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))
364 #define ARGP_LIST1(a) (ARG_1(a))
365 #define ARGP_LIST2(a, b) (ARG_1(a)|ARG_2(b))
366 #define ARGP_LIST3(a, b, c) (ARG_1(a)|ARG_2(b)|ARG_3(c))
367 #define ARGP_LIST4(a, b, c, d) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
368 #define ARGP_LIST5(a, b, c, d, e) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
369 #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))
371 #define GET_CURRENT_ARG_TYPE(List) (List & ((UINT32) 0x1F))
372 #define INCREMENT_ARG_LIST(List) (List >>= ((UINT32) ARG_TYPE_WIDTH))
375 * Ascii error messages can be configured out
377 #ifndef ACPI_NO_ERROR_MESSAGES
379 * Error reporting. Callers module and line number are inserted by AE_INFO,
380 * the plist contains a set of parens to allow variable-length lists.
381 * These macros are used for both the debug and non-debug versions of the code.
383 #define ACPI_ERROR_NAMESPACE(s, e) AcpiUtNamespaceError (AE_INFO, s, e);
384 #define ACPI_ERROR_METHOD(s, n, p, e) AcpiUtMethodError (AE_INFO, s, n, p, e);
385 #define ACPI_WARN_PREDEFINED(plist) AcpiUtPredefinedWarning plist
386 #define ACPI_INFO_PREDEFINED(plist) AcpiUtPredefinedInfo plist
387 #define ACPI_BIOS_ERROR_PREDEFINED(plist) AcpiUtPredefinedBiosError plist
391 /* No error messages */
393 #define ACPI_ERROR_NAMESPACE(s, e)
394 #define ACPI_ERROR_METHOD(s, n, p, e)
395 #define ACPI_WARN_PREDEFINED(plist)
396 #define ACPI_INFO_PREDEFINED(plist)
397 #define ACPI_BIOS_ERROR_PREDEFINED(plist)
399 #endif /* ACPI_NO_ERROR_MESSAGES */
401 #if (!ACPI_REDUCED_HARDWARE)
402 #define ACPI_HW_OPTIONAL_FUNCTION(addr) addr
404 #define ACPI_HW_OPTIONAL_FUNCTION(addr) NULL
409 * Macros used for ACPICA utilities only
412 /* Generate a UUID */
414 #define ACPI_INIT_UUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
415 (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
416 (b) & 0xFF, ((b) >> 8) & 0xFF, \
417 (c) & 0xFF, ((c) >> 8) & 0xFF, \
418 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
420 #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7'))
423 #endif /* ACMACROS_H */