1*4882a593Smuzhiyun /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ 2*4882a593Smuzhiyun /****************************************************************************** 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Name: acmacros.h - C macros for the entire subsystem. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 2000 - 2020, Intel Corp. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun *****************************************************************************/ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef __ACMACROS_H__ 11*4882a593Smuzhiyun #define __ACMACROS_H__ 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* 14*4882a593Smuzhiyun * Extract data using a pointer. Any more than a byte and we 15*4882a593Smuzhiyun * get into potential alignment issues -- see the STORE macros below. 16*4882a593Smuzhiyun * Use with care. 17*4882a593Smuzhiyun */ 18*4882a593Smuzhiyun #define ACPI_CAST8(ptr) ACPI_CAST_PTR (u8, (ptr)) 19*4882a593Smuzhiyun #define ACPI_CAST16(ptr) ACPI_CAST_PTR (u16, (ptr)) 20*4882a593Smuzhiyun #define ACPI_CAST32(ptr) ACPI_CAST_PTR (u32, (ptr)) 21*4882a593Smuzhiyun #define ACPI_CAST64(ptr) ACPI_CAST_PTR (u64, (ptr)) 22*4882a593Smuzhiyun #define ACPI_GET8(ptr) (*ACPI_CAST8 (ptr)) 23*4882a593Smuzhiyun #define ACPI_GET16(ptr) (*ACPI_CAST16 (ptr)) 24*4882a593Smuzhiyun #define ACPI_GET32(ptr) (*ACPI_CAST32 (ptr)) 25*4882a593Smuzhiyun #define ACPI_GET64(ptr) (*ACPI_CAST64 (ptr)) 26*4882a593Smuzhiyun #define ACPI_SET8(ptr, val) (*ACPI_CAST8 (ptr) = (u8) (val)) 27*4882a593Smuzhiyun #define ACPI_SET16(ptr, val) (*ACPI_CAST16 (ptr) = (u16) (val)) 28*4882a593Smuzhiyun #define ACPI_SET32(ptr, val) (*ACPI_CAST32 (ptr) = (u32) (val)) 29*4882a593Smuzhiyun #define ACPI_SET64(ptr, val) (*ACPI_CAST64 (ptr) = (u64) (val)) 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /* 32*4882a593Smuzhiyun * printf() format helper. This macro is a workaround for the difficulties 33*4882a593Smuzhiyun * with emitting 64-bit integers and 64-bit pointers with the same code 34*4882a593Smuzhiyun * for both 32-bit and 64-bit hosts. 35*4882a593Smuzhiyun */ 36*4882a593Smuzhiyun #define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i), ACPI_LODWORD(i) 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun /* 39*4882a593Smuzhiyun * Macros for moving data around to/from buffers that are possibly unaligned. 40*4882a593Smuzhiyun * If the hardware supports the transfer of unaligned data, just do the store. 41*4882a593Smuzhiyun * Otherwise, we have to move one byte at a time. 42*4882a593Smuzhiyun */ 43*4882a593Smuzhiyun #ifdef ACPI_BIG_ENDIAN 44*4882a593Smuzhiyun /* 45*4882a593Smuzhiyun * Macros for big-endian machines 46*4882a593Smuzhiyun */ 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun /* These macros reverse the bytes during the move, converting little-endian to big endian */ 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun /* Big Endian <== Little Endian */ 51*4882a593Smuzhiyun /* Hi...Lo Lo...Hi */ 52*4882a593Smuzhiyun /* 16-bit source, 16/32/64 destination */ 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_16(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\ 55*4882a593Smuzhiyun (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];} 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_32(d, s) {(*(u32 *)(void *)(d))=0;\ 58*4882a593Smuzhiyun ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\ 59*4882a593Smuzhiyun ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];} 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_64(d, s) {(*(u64 *)(void *)(d))=0;\ 62*4882a593Smuzhiyun ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\ 63*4882a593Smuzhiyun ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];} 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun /* 32-bit source, 16/32/64 destination */ 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_32(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\ 70*4882a593Smuzhiyun (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\ 71*4882a593Smuzhiyun (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\ 72*4882a593Smuzhiyun (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];} 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_64(d, s) {(*(u64 *)(void *)(d))=0;\ 75*4882a593Smuzhiyun ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\ 76*4882a593Smuzhiyun ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\ 77*4882a593Smuzhiyun ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\ 78*4882a593Smuzhiyun ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];} 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun /* 64-bit source, 16/32/64 destination */ 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */ 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_64(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\ 87*4882a593Smuzhiyun (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\ 88*4882a593Smuzhiyun (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\ 89*4882a593Smuzhiyun (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\ 90*4882a593Smuzhiyun (( u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\ 91*4882a593Smuzhiyun (( u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\ 92*4882a593Smuzhiyun (( u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\ 93*4882a593Smuzhiyun (( u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];} 94*4882a593Smuzhiyun #else 95*4882a593Smuzhiyun /* 96*4882a593Smuzhiyun * Macros for little-endian machines 97*4882a593Smuzhiyun */ 98*4882a593Smuzhiyun 99*4882a593Smuzhiyun #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED 100*4882a593Smuzhiyun 101*4882a593Smuzhiyun /* The hardware supports unaligned transfers, just do the little-endian move */ 102*4882a593Smuzhiyun 103*4882a593Smuzhiyun /* 16-bit source, 16/32/64 destination */ 104*4882a593Smuzhiyun 105*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_16(d, s) *(u16 *)(void *)(d) = *(u16 *)(void *)(s) 106*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_32(d, s) *(u32 *)(void *)(d) = *(u16 *)(void *)(s) 107*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_64(d, s) *(u64 *)(void *)(d) = *(u16 *)(void *)(s) 108*4882a593Smuzhiyun 109*4882a593Smuzhiyun /* 32-bit source, 16/32/64 destination */ 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 112*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_32(d, s) *(u32 *)(void *)(d) = *(u32 *)(void *)(s) 113*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_64(d, s) *(u64 *)(void *)(d) = *(u32 *)(void *)(s) 114*4882a593Smuzhiyun 115*4882a593Smuzhiyun /* 64-bit source, 16/32/64 destination */ 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 118*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */ 119*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_64(d, s) *(u64 *)(void *)(d) = *(u64 *)(void *)(s) 120*4882a593Smuzhiyun 121*4882a593Smuzhiyun #else 122*4882a593Smuzhiyun /* 123*4882a593Smuzhiyun * The hardware does not support unaligned transfers. We must move the 124*4882a593Smuzhiyun * data one byte at a time. These macros work whether the source or 125*4882a593Smuzhiyun * the destination (or both) is/are unaligned. (Little-endian move) 126*4882a593Smuzhiyun */ 127*4882a593Smuzhiyun 128*4882a593Smuzhiyun /* 16-bit source, 16/32/64 destination */ 129*4882a593Smuzhiyun 130*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_16(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\ 131*4882a593Smuzhiyun (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];} 132*4882a593Smuzhiyun 133*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_32(d, s) {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);} 134*4882a593Smuzhiyun #define ACPI_MOVE_16_TO_64(d, s) {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);} 135*4882a593Smuzhiyun 136*4882a593Smuzhiyun /* 32-bit source, 16/32/64 destination */ 137*4882a593Smuzhiyun 138*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 139*4882a593Smuzhiyun 140*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_32(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\ 141*4882a593Smuzhiyun (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\ 142*4882a593Smuzhiyun (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\ 143*4882a593Smuzhiyun (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];} 144*4882a593Smuzhiyun 145*4882a593Smuzhiyun #define ACPI_MOVE_32_TO_64(d, s) {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);} 146*4882a593Smuzhiyun 147*4882a593Smuzhiyun /* 64-bit source, 16/32/64 destination */ 148*4882a593Smuzhiyun 149*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 150*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */ 151*4882a593Smuzhiyun #define ACPI_MOVE_64_TO_64(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\ 152*4882a593Smuzhiyun (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\ 153*4882a593Smuzhiyun (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\ 154*4882a593Smuzhiyun (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\ 155*4882a593Smuzhiyun (( u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[4];\ 156*4882a593Smuzhiyun (( u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[5];\ 157*4882a593Smuzhiyun (( u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[6];\ 158*4882a593Smuzhiyun (( u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[7];} 159*4882a593Smuzhiyun #endif 160*4882a593Smuzhiyun #endif 161*4882a593Smuzhiyun 162*4882a593Smuzhiyun /* 163*4882a593Smuzhiyun * Fast power-of-two math macros for non-optimized compilers 164*4882a593Smuzhiyun */ 165*4882a593Smuzhiyun #define _ACPI_DIV(value, power_of2) ((u32) ((value) >> (power_of2))) 166*4882a593Smuzhiyun #define _ACPI_MUL(value, power_of2) ((u32) ((value) << (power_of2))) 167*4882a593Smuzhiyun #define _ACPI_MOD(value, divisor) ((u32) ((value) & ((divisor) -1))) 168*4882a593Smuzhiyun 169*4882a593Smuzhiyun #define ACPI_DIV_2(a) _ACPI_DIV(a, 1) 170*4882a593Smuzhiyun #define ACPI_MUL_2(a) _ACPI_MUL(a, 1) 171*4882a593Smuzhiyun #define ACPI_MOD_2(a) _ACPI_MOD(a, 2) 172*4882a593Smuzhiyun 173*4882a593Smuzhiyun #define ACPI_DIV_4(a) _ACPI_DIV(a, 2) 174*4882a593Smuzhiyun #define ACPI_MUL_4(a) _ACPI_MUL(a, 2) 175*4882a593Smuzhiyun #define ACPI_MOD_4(a) _ACPI_MOD(a, 4) 176*4882a593Smuzhiyun 177*4882a593Smuzhiyun #define ACPI_DIV_8(a) _ACPI_DIV(a, 3) 178*4882a593Smuzhiyun #define ACPI_MUL_8(a) _ACPI_MUL(a, 3) 179*4882a593Smuzhiyun #define ACPI_MOD_8(a) _ACPI_MOD(a, 8) 180*4882a593Smuzhiyun 181*4882a593Smuzhiyun #define ACPI_DIV_16(a) _ACPI_DIV(a, 4) 182*4882a593Smuzhiyun #define ACPI_MUL_16(a) _ACPI_MUL(a, 4) 183*4882a593Smuzhiyun #define ACPI_MOD_16(a) _ACPI_MOD(a, 16) 184*4882a593Smuzhiyun 185*4882a593Smuzhiyun #define ACPI_DIV_32(a) _ACPI_DIV(a, 5) 186*4882a593Smuzhiyun #define ACPI_MUL_32(a) _ACPI_MUL(a, 5) 187*4882a593Smuzhiyun #define ACPI_MOD_32(a) _ACPI_MOD(a, 32) 188*4882a593Smuzhiyun 189*4882a593Smuzhiyun /* Test for ASCII character */ 190*4882a593Smuzhiyun 191*4882a593Smuzhiyun #define ACPI_IS_ASCII(c) ((c) < 0x80) 192*4882a593Smuzhiyun 193*4882a593Smuzhiyun /* Signed integers */ 194*4882a593Smuzhiyun 195*4882a593Smuzhiyun #define ACPI_SIGN_POSITIVE 0 196*4882a593Smuzhiyun #define ACPI_SIGN_NEGATIVE 1 197*4882a593Smuzhiyun 198*4882a593Smuzhiyun /* 199*4882a593Smuzhiyun * Rounding macros (Power of two boundaries only) 200*4882a593Smuzhiyun */ 201*4882a593Smuzhiyun #define ACPI_ROUND_DOWN(value, boundary) (((acpi_size)(value)) & \ 202*4882a593Smuzhiyun (~(((acpi_size) boundary)-1))) 203*4882a593Smuzhiyun 204*4882a593Smuzhiyun #define ACPI_ROUND_UP(value, boundary) ((((acpi_size)(value)) + \ 205*4882a593Smuzhiyun (((acpi_size) boundary)-1)) & \ 206*4882a593Smuzhiyun (~(((acpi_size) boundary)-1))) 207*4882a593Smuzhiyun 208*4882a593Smuzhiyun /* Note: sizeof(acpi_size) evaluates to either 4 or 8 (32- vs 64-bit mode) */ 209*4882a593Smuzhiyun 210*4882a593Smuzhiyun #define ACPI_ROUND_DOWN_TO_32BIT(a) ACPI_ROUND_DOWN(a, 4) 211*4882a593Smuzhiyun #define ACPI_ROUND_DOWN_TO_64BIT(a) ACPI_ROUND_DOWN(a, 8) 212*4882a593Smuzhiyun #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a) ACPI_ROUND_DOWN(a, sizeof(acpi_size)) 213*4882a593Smuzhiyun 214*4882a593Smuzhiyun #define ACPI_ROUND_UP_TO_32BIT(a) ACPI_ROUND_UP(a, 4) 215*4882a593Smuzhiyun #define ACPI_ROUND_UP_TO_64BIT(a) ACPI_ROUND_UP(a, 8) 216*4882a593Smuzhiyun #define ACPI_ROUND_UP_TO_NATIVE_WORD(a) ACPI_ROUND_UP(a, sizeof(acpi_size)) 217*4882a593Smuzhiyun 218*4882a593Smuzhiyun #define ACPI_ROUND_BITS_UP_TO_BYTES(a) ACPI_DIV_8((a) + 7) 219*4882a593Smuzhiyun #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a) ACPI_DIV_8((a)) 220*4882a593Smuzhiyun 221*4882a593Smuzhiyun #define ACPI_ROUND_UP_TO_1K(a) (((a) + 1023) >> 10) 222*4882a593Smuzhiyun 223*4882a593Smuzhiyun /* Generic (non-power-of-two) rounding */ 224*4882a593Smuzhiyun 225*4882a593Smuzhiyun #define ACPI_ROUND_UP_TO(value, boundary) (((value) + ((boundary)-1)) / (boundary)) 226*4882a593Smuzhiyun 227*4882a593Smuzhiyun #define ACPI_IS_MISALIGNED(value) (((acpi_size) value) & (sizeof(acpi_size)-1)) 228*4882a593Smuzhiyun 229*4882a593Smuzhiyun /* Generic bit manipulation */ 230*4882a593Smuzhiyun 231*4882a593Smuzhiyun #ifndef ACPI_USE_NATIVE_BIT_FINDER 232*4882a593Smuzhiyun 233*4882a593Smuzhiyun #define __ACPI_FIND_LAST_BIT_2(a, r) ((((u8) (a)) & 0x02) ? (r)+1 : (r)) 234*4882a593Smuzhiyun #define __ACPI_FIND_LAST_BIT_4(a, r) ((((u8) (a)) & 0x0C) ? \ 235*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_2 ((a)>>2, (r)+2) : \ 236*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_2 ((a), (r))) 237*4882a593Smuzhiyun #define __ACPI_FIND_LAST_BIT_8(a, r) ((((u8) (a)) & 0xF0) ? \ 238*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_4 ((a)>>4, (r)+4) : \ 239*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_4 ((a), (r))) 240*4882a593Smuzhiyun #define __ACPI_FIND_LAST_BIT_16(a, r) ((((u16) (a)) & 0xFF00) ? \ 241*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_8 ((a)>>8, (r)+8) : \ 242*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_8 ((a), (r))) 243*4882a593Smuzhiyun #define __ACPI_FIND_LAST_BIT_32(a, r) ((((u32) (a)) & 0xFFFF0000) ? \ 244*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_16 ((a)>>16, (r)+16) : \ 245*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_16 ((a), (r))) 246*4882a593Smuzhiyun #define __ACPI_FIND_LAST_BIT_64(a, r) ((((u64) (a)) & 0xFFFFFFFF00000000) ? \ 247*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_32 ((a)>>32, (r)+32) : \ 248*4882a593Smuzhiyun __ACPI_FIND_LAST_BIT_32 ((a), (r))) 249*4882a593Smuzhiyun 250*4882a593Smuzhiyun #define ACPI_FIND_LAST_BIT_8(a) ((a) ? __ACPI_FIND_LAST_BIT_8 (a, 1) : 0) 251*4882a593Smuzhiyun #define ACPI_FIND_LAST_BIT_16(a) ((a) ? __ACPI_FIND_LAST_BIT_16 (a, 1) : 0) 252*4882a593Smuzhiyun #define ACPI_FIND_LAST_BIT_32(a) ((a) ? __ACPI_FIND_LAST_BIT_32 (a, 1) : 0) 253*4882a593Smuzhiyun #define ACPI_FIND_LAST_BIT_64(a) ((a) ? __ACPI_FIND_LAST_BIT_64 (a, 1) : 0) 254*4882a593Smuzhiyun 255*4882a593Smuzhiyun #define __ACPI_FIND_FIRST_BIT_2(a, r) ((((u8) (a)) & 0x01) ? (r) : (r)+1) 256*4882a593Smuzhiyun #define __ACPI_FIND_FIRST_BIT_4(a, r) ((((u8) (a)) & 0x03) ? \ 257*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_2 ((a), (r)) : \ 258*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_2 ((a)>>2, (r)+2)) 259*4882a593Smuzhiyun #define __ACPI_FIND_FIRST_BIT_8(a, r) ((((u8) (a)) & 0x0F) ? \ 260*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_4 ((a), (r)) : \ 261*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_4 ((a)>>4, (r)+4)) 262*4882a593Smuzhiyun #define __ACPI_FIND_FIRST_BIT_16(a, r) ((((u16) (a)) & 0x00FF) ? \ 263*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_8 ((a), (r)) : \ 264*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_8 ((a)>>8, (r)+8)) 265*4882a593Smuzhiyun #define __ACPI_FIND_FIRST_BIT_32(a, r) ((((u32) (a)) & 0x0000FFFF) ? \ 266*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_16 ((a), (r)) : \ 267*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_16 ((a)>>16, (r)+16)) 268*4882a593Smuzhiyun #define __ACPI_FIND_FIRST_BIT_64(a, r) ((((u64) (a)) & 0x00000000FFFFFFFF) ? \ 269*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_32 ((a), (r)) : \ 270*4882a593Smuzhiyun __ACPI_FIND_FIRST_BIT_32 ((a)>>32, (r)+32)) 271*4882a593Smuzhiyun 272*4882a593Smuzhiyun #define ACPI_FIND_FIRST_BIT_8(a) ((a) ? __ACPI_FIND_FIRST_BIT_8 (a, 1) : 0) 273*4882a593Smuzhiyun #define ACPI_FIND_FIRST_BIT_16(a) ((a) ? __ACPI_FIND_FIRST_BIT_16 (a, 1) : 0) 274*4882a593Smuzhiyun #define ACPI_FIND_FIRST_BIT_32(a) ((a) ? __ACPI_FIND_FIRST_BIT_32 (a, 1) : 0) 275*4882a593Smuzhiyun #define ACPI_FIND_FIRST_BIT_64(a) ((a) ? __ACPI_FIND_FIRST_BIT_64 (a, 1) : 0) 276*4882a593Smuzhiyun 277*4882a593Smuzhiyun #endif /* ACPI_USE_NATIVE_BIT_FINDER */ 278*4882a593Smuzhiyun 279*4882a593Smuzhiyun /* Generic (power-of-two) rounding */ 280*4882a593Smuzhiyun 281*4882a593Smuzhiyun #define ACPI_ROUND_UP_POWER_OF_TWO_8(a) ((u8) \ 282*4882a593Smuzhiyun (((u16) 1) << ACPI_FIND_LAST_BIT_8 ((a) - 1))) 283*4882a593Smuzhiyun #define ACPI_ROUND_DOWN_POWER_OF_TWO_8(a) ((u8) \ 284*4882a593Smuzhiyun (((u16) 1) << (ACPI_FIND_LAST_BIT_8 ((a)) - 1))) 285*4882a593Smuzhiyun #define ACPI_ROUND_UP_POWER_OF_TWO_16(a) ((u16) \ 286*4882a593Smuzhiyun (((u32) 1) << ACPI_FIND_LAST_BIT_16 ((a) - 1))) 287*4882a593Smuzhiyun #define ACPI_ROUND_DOWN_POWER_OF_TWO_16(a) ((u16) \ 288*4882a593Smuzhiyun (((u32) 1) << (ACPI_FIND_LAST_BIT_16 ((a)) - 1))) 289*4882a593Smuzhiyun #define ACPI_ROUND_UP_POWER_OF_TWO_32(a) ((u32) \ 290*4882a593Smuzhiyun (((u64) 1) << ACPI_FIND_LAST_BIT_32 ((a) - 1))) 291*4882a593Smuzhiyun #define ACPI_ROUND_DOWN_POWER_OF_TWO_32(a) ((u32) \ 292*4882a593Smuzhiyun (((u64) 1) << (ACPI_FIND_LAST_BIT_32 ((a)) - 1))) 293*4882a593Smuzhiyun #define ACPI_IS_ALIGNED(a, s) (((a) & ((s) - 1)) == 0) 294*4882a593Smuzhiyun #define ACPI_IS_POWER_OF_TWO(a) ACPI_IS_ALIGNED(a, a) 295*4882a593Smuzhiyun 296*4882a593Smuzhiyun /* 297*4882a593Smuzhiyun * Bitmask creation 298*4882a593Smuzhiyun * Bit positions start at zero. 299*4882a593Smuzhiyun * MASK_BITS_ABOVE creates a mask starting AT the position and above 300*4882a593Smuzhiyun * MASK_BITS_BELOW creates a mask starting one bit BELOW the position 301*4882a593Smuzhiyun * MASK_BITS_ABOVE/BELOW accepts a bit offset to create a mask 302*4882a593Smuzhiyun * MASK_BITS_ABOVE/BELOW_32/64 accepts a bit width to create a mask 303*4882a593Smuzhiyun * Note: The ACPI_INTEGER_BIT_SIZE check is used to bypass compiler 304*4882a593Smuzhiyun * differences with the shift operator 305*4882a593Smuzhiyun */ 306*4882a593Smuzhiyun #define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_UINT64_MAX) << ((u32) (position)))) 307*4882a593Smuzhiyun #define ACPI_MASK_BITS_BELOW(position) ((ACPI_UINT64_MAX) << ((u32) (position))) 308*4882a593Smuzhiyun #define ACPI_MASK_BITS_ABOVE_32(width) ((u32) ACPI_MASK_BITS_ABOVE(width)) 309*4882a593Smuzhiyun #define ACPI_MASK_BITS_BELOW_32(width) ((u32) ACPI_MASK_BITS_BELOW(width)) 310*4882a593Smuzhiyun #define ACPI_MASK_BITS_ABOVE_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \ 311*4882a593Smuzhiyun ACPI_UINT64_MAX : \ 312*4882a593Smuzhiyun ACPI_MASK_BITS_ABOVE(width)) 313*4882a593Smuzhiyun #define ACPI_MASK_BITS_BELOW_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \ 314*4882a593Smuzhiyun (u64) 0 : \ 315*4882a593Smuzhiyun ACPI_MASK_BITS_BELOW(width)) 316*4882a593Smuzhiyun 317*4882a593Smuzhiyun /* Bitfields within ACPI registers */ 318*4882a593Smuzhiyun 319*4882a593Smuzhiyun #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask) \ 320*4882a593Smuzhiyun ((val << pos) & mask) 321*4882a593Smuzhiyun 322*4882a593Smuzhiyun #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val) \ 323*4882a593Smuzhiyun reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask) 324*4882a593Smuzhiyun 325*4882a593Smuzhiyun #define ACPI_INSERT_BITS(target, mask, source) \ 326*4882a593Smuzhiyun target = ((target & (~(mask))) | (source & mask)) 327*4882a593Smuzhiyun 328*4882a593Smuzhiyun /* Generic bitfield macros and masks */ 329*4882a593Smuzhiyun 330*4882a593Smuzhiyun #define ACPI_GET_BITS(source_ptr, position, mask) \ 331*4882a593Smuzhiyun ((*(source_ptr) >> (position)) & (mask)) 332*4882a593Smuzhiyun 333*4882a593Smuzhiyun #define ACPI_SET_BITS(target_ptr, position, mask, value) \ 334*4882a593Smuzhiyun (*(target_ptr) |= (((value) & (mask)) << (position))) 335*4882a593Smuzhiyun 336*4882a593Smuzhiyun #define ACPI_1BIT_MASK 0x00000001 337*4882a593Smuzhiyun #define ACPI_2BIT_MASK 0x00000003 338*4882a593Smuzhiyun #define ACPI_3BIT_MASK 0x00000007 339*4882a593Smuzhiyun #define ACPI_4BIT_MASK 0x0000000F 340*4882a593Smuzhiyun #define ACPI_5BIT_MASK 0x0000001F 341*4882a593Smuzhiyun #define ACPI_6BIT_MASK 0x0000003F 342*4882a593Smuzhiyun #define ACPI_7BIT_MASK 0x0000007F 343*4882a593Smuzhiyun #define ACPI_8BIT_MASK 0x000000FF 344*4882a593Smuzhiyun #define ACPI_16BIT_MASK 0x0000FFFF 345*4882a593Smuzhiyun #define ACPI_24BIT_MASK 0x00FFFFFF 346*4882a593Smuzhiyun 347*4882a593Smuzhiyun /* Macros to extract flag bits from position zero */ 348*4882a593Smuzhiyun 349*4882a593Smuzhiyun #define ACPI_GET_1BIT_FLAG(value) ((value) & ACPI_1BIT_MASK) 350*4882a593Smuzhiyun #define ACPI_GET_2BIT_FLAG(value) ((value) & ACPI_2BIT_MASK) 351*4882a593Smuzhiyun #define ACPI_GET_3BIT_FLAG(value) ((value) & ACPI_3BIT_MASK) 352*4882a593Smuzhiyun #define ACPI_GET_4BIT_FLAG(value) ((value) & ACPI_4BIT_MASK) 353*4882a593Smuzhiyun 354*4882a593Smuzhiyun /* Macros to extract flag bits from position one and above */ 355*4882a593Smuzhiyun 356*4882a593Smuzhiyun #define ACPI_EXTRACT_1BIT_FLAG(field, position) (ACPI_GET_1BIT_FLAG ((field) >> position)) 357*4882a593Smuzhiyun #define ACPI_EXTRACT_2BIT_FLAG(field, position) (ACPI_GET_2BIT_FLAG ((field) >> position)) 358*4882a593Smuzhiyun #define ACPI_EXTRACT_3BIT_FLAG(field, position) (ACPI_GET_3BIT_FLAG ((field) >> position)) 359*4882a593Smuzhiyun #define ACPI_EXTRACT_4BIT_FLAG(field, position) (ACPI_GET_4BIT_FLAG ((field) >> position)) 360*4882a593Smuzhiyun 361*4882a593Smuzhiyun /* ACPI Pathname helpers */ 362*4882a593Smuzhiyun 363*4882a593Smuzhiyun #define ACPI_IS_ROOT_PREFIX(c) ((c) == (u8) 0x5C) /* Backslash */ 364*4882a593Smuzhiyun #define ACPI_IS_PARENT_PREFIX(c) ((c) == (u8) 0x5E) /* Carat */ 365*4882a593Smuzhiyun #define ACPI_IS_PATH_SEPARATOR(c) ((c) == (u8) 0x2E) /* Period (dot) */ 366*4882a593Smuzhiyun 367*4882a593Smuzhiyun /* 368*4882a593Smuzhiyun * An object of type struct acpi_namespace_node can appear in some contexts 369*4882a593Smuzhiyun * where a pointer to an object of type union acpi_operand_object can also 370*4882a593Smuzhiyun * appear. This macro is used to distinguish them. 371*4882a593Smuzhiyun * 372*4882a593Smuzhiyun * The "DescriptorType" field is the second field in both structures. 373*4882a593Smuzhiyun */ 374*4882a593Smuzhiyun #define ACPI_GET_DESCRIPTOR_PTR(d) (((union acpi_descriptor *)(void *)(d))->common.common_pointer) 375*4882a593Smuzhiyun #define ACPI_SET_DESCRIPTOR_PTR(d, p) (((union acpi_descriptor *)(void *)(d))->common.common_pointer = (p)) 376*4882a593Smuzhiyun #define ACPI_GET_DESCRIPTOR_TYPE(d) (((union acpi_descriptor *)(void *)(d))->common.descriptor_type) 377*4882a593Smuzhiyun #define ACPI_SET_DESCRIPTOR_TYPE(d, t) (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = (t)) 378*4882a593Smuzhiyun 379*4882a593Smuzhiyun /* 380*4882a593Smuzhiyun * Macros for the master AML opcode table 381*4882a593Smuzhiyun */ 382*4882a593Smuzhiyun #if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT) 383*4882a593Smuzhiyun #define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \ 384*4882a593Smuzhiyun {name, (u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type} 385*4882a593Smuzhiyun #else 386*4882a593Smuzhiyun #define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \ 387*4882a593Smuzhiyun {(u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type} 388*4882a593Smuzhiyun #endif 389*4882a593Smuzhiyun 390*4882a593Smuzhiyun #define ARG_TYPE_WIDTH 5 391*4882a593Smuzhiyun #define ARG_1(x) ((u32)(x)) 392*4882a593Smuzhiyun #define ARG_2(x) ((u32)(x) << (1 * ARG_TYPE_WIDTH)) 393*4882a593Smuzhiyun #define ARG_3(x) ((u32)(x) << (2 * ARG_TYPE_WIDTH)) 394*4882a593Smuzhiyun #define ARG_4(x) ((u32)(x) << (3 * ARG_TYPE_WIDTH)) 395*4882a593Smuzhiyun #define ARG_5(x) ((u32)(x) << (4 * ARG_TYPE_WIDTH)) 396*4882a593Smuzhiyun #define ARG_6(x) ((u32)(x) << (5 * ARG_TYPE_WIDTH)) 397*4882a593Smuzhiyun 398*4882a593Smuzhiyun #define ARGI_LIST1(a) (ARG_1(a)) 399*4882a593Smuzhiyun #define ARGI_LIST2(a, b) (ARG_1(b)|ARG_2(a)) 400*4882a593Smuzhiyun #define ARGI_LIST3(a, b, c) (ARG_1(c)|ARG_2(b)|ARG_3(a)) 401*4882a593Smuzhiyun #define ARGI_LIST4(a, b, c, d) (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a)) 402*4882a593Smuzhiyun #define ARGI_LIST5(a, b, c, d, e) (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a)) 403*4882a593Smuzhiyun #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)) 404*4882a593Smuzhiyun 405*4882a593Smuzhiyun #define ARGP_LIST1(a) (ARG_1(a)) 406*4882a593Smuzhiyun #define ARGP_LIST2(a, b) (ARG_1(a)|ARG_2(b)) 407*4882a593Smuzhiyun #define ARGP_LIST3(a, b, c) (ARG_1(a)|ARG_2(b)|ARG_3(c)) 408*4882a593Smuzhiyun #define ARGP_LIST4(a, b, c, d) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)) 409*4882a593Smuzhiyun #define ARGP_LIST5(a, b, c, d, e) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e)) 410*4882a593Smuzhiyun #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)) 411*4882a593Smuzhiyun 412*4882a593Smuzhiyun #define GET_CURRENT_ARG_TYPE(list) (list & ((u32) 0x1F)) 413*4882a593Smuzhiyun #define INCREMENT_ARG_LIST(list) (list >>= ((u32) ARG_TYPE_WIDTH)) 414*4882a593Smuzhiyun 415*4882a593Smuzhiyun /* 416*4882a593Smuzhiyun * Ascii error messages can be configured out 417*4882a593Smuzhiyun */ 418*4882a593Smuzhiyun #ifndef ACPI_NO_ERROR_MESSAGES 419*4882a593Smuzhiyun /* 420*4882a593Smuzhiyun * Error reporting. The callers module and line number are inserted by AE_INFO, 421*4882a593Smuzhiyun * the plist contains a set of parens to allow variable-length lists. 422*4882a593Smuzhiyun * These macros are used for both the debug and non-debug versions of the code. 423*4882a593Smuzhiyun */ 424*4882a593Smuzhiyun #define ACPI_ERROR_NAMESPACE(s, p, e) acpi_ut_prefixed_namespace_error (AE_INFO, s, p, e); 425*4882a593Smuzhiyun #define ACPI_ERROR_METHOD(s, n, p, e) acpi_ut_method_error (AE_INFO, s, n, p, e); 426*4882a593Smuzhiyun #define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist 427*4882a593Smuzhiyun #define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist 428*4882a593Smuzhiyun #define ACPI_BIOS_ERROR_PREDEFINED(plist) acpi_ut_predefined_bios_error plist 429*4882a593Smuzhiyun #define ACPI_ERROR_ONLY(s) s 430*4882a593Smuzhiyun 431*4882a593Smuzhiyun #else 432*4882a593Smuzhiyun 433*4882a593Smuzhiyun /* No error messages */ 434*4882a593Smuzhiyun 435*4882a593Smuzhiyun #define ACPI_ERROR_NAMESPACE(s, p, e) 436*4882a593Smuzhiyun #define ACPI_ERROR_METHOD(s, n, p, e) 437*4882a593Smuzhiyun #define ACPI_WARN_PREDEFINED(plist) 438*4882a593Smuzhiyun #define ACPI_INFO_PREDEFINED(plist) 439*4882a593Smuzhiyun #define ACPI_BIOS_ERROR_PREDEFINED(plist) 440*4882a593Smuzhiyun #define ACPI_ERROR_ONLY(s) 441*4882a593Smuzhiyun 442*4882a593Smuzhiyun #endif /* ACPI_NO_ERROR_MESSAGES */ 443*4882a593Smuzhiyun 444*4882a593Smuzhiyun #if (!ACPI_REDUCED_HARDWARE) 445*4882a593Smuzhiyun #define ACPI_HW_OPTIONAL_FUNCTION(addr) addr 446*4882a593Smuzhiyun #else 447*4882a593Smuzhiyun #define ACPI_HW_OPTIONAL_FUNCTION(addr) NULL 448*4882a593Smuzhiyun #endif 449*4882a593Smuzhiyun 450*4882a593Smuzhiyun /* 451*4882a593Smuzhiyun * Macros used for ACPICA utilities only 452*4882a593Smuzhiyun */ 453*4882a593Smuzhiyun 454*4882a593Smuzhiyun /* Generate a UUID */ 455*4882a593Smuzhiyun 456*4882a593Smuzhiyun #define ACPI_INIT_UUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 457*4882a593Smuzhiyun (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \ 458*4882a593Smuzhiyun (b) & 0xFF, ((b) >> 8) & 0xFF, \ 459*4882a593Smuzhiyun (c) & 0xFF, ((c) >> 8) & 0xFF, \ 460*4882a593Smuzhiyun (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) 461*4882a593Smuzhiyun 462*4882a593Smuzhiyun #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7')) 463*4882a593Smuzhiyun 464*4882a593Smuzhiyun /* 465*4882a593Smuzhiyun * Macros used for the ASL-/ASL+ converter utility 466*4882a593Smuzhiyun */ 467*4882a593Smuzhiyun #ifdef ACPI_ASL_COMPILER 468*4882a593Smuzhiyun 469*4882a593Smuzhiyun #define ASL_CV_LABEL_FILENODE(a) cv_label_file_node(a); 470*4882a593Smuzhiyun #define ASL_CV_CAPTURE_COMMENTS_ONLY(a) cv_capture_comments_only (a); 471*4882a593Smuzhiyun #define ASL_CV_CAPTURE_COMMENTS(a) cv_capture_comments (a); 472*4882a593Smuzhiyun #define ASL_CV_TRANSFER_COMMENTS(a) cv_transfer_comments (a); 473*4882a593Smuzhiyun #define ASL_CV_CLOSE_PAREN(a,b) cv_close_paren_write_comment(a,b); 474*4882a593Smuzhiyun #define ASL_CV_CLOSE_BRACE(a,b) cv_close_brace_write_comment(a,b); 475*4882a593Smuzhiyun #define ASL_CV_SWITCH_FILES(a,b) cv_switch_files(a,b); 476*4882a593Smuzhiyun #define ASL_CV_CLEAR_OP_COMMENTS(a) cv_clear_op_comments(a); 477*4882a593Smuzhiyun #define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) cv_print_one_comment_type (a,b,c,d); 478*4882a593Smuzhiyun #define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) cv_print_one_comment_list (a,b); 479*4882a593Smuzhiyun #define ASL_CV_FILE_HAS_SWITCHED(a) cv_file_has_switched(a) 480*4882a593Smuzhiyun #define ASL_CV_INIT_FILETREE(a,b) cv_init_file_tree(a,b); 481*4882a593Smuzhiyun 482*4882a593Smuzhiyun #else 483*4882a593Smuzhiyun 484*4882a593Smuzhiyun #define ASL_CV_LABEL_FILENODE(a) 485*4882a593Smuzhiyun #define ASL_CV_CAPTURE_COMMENTS_ONLY(a) 486*4882a593Smuzhiyun #define ASL_CV_CAPTURE_COMMENTS(a) 487*4882a593Smuzhiyun #define ASL_CV_TRANSFER_COMMENTS(a) 488*4882a593Smuzhiyun #define ASL_CV_CLOSE_PAREN(a,b) acpi_os_printf (")"); 489*4882a593Smuzhiyun #define ASL_CV_CLOSE_BRACE(a,b) acpi_os_printf ("}"); 490*4882a593Smuzhiyun #define ASL_CV_SWITCH_FILES(a,b) 491*4882a593Smuzhiyun #define ASL_CV_CLEAR_OP_COMMENTS(a) 492*4882a593Smuzhiyun #define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) 493*4882a593Smuzhiyun #define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) 494*4882a593Smuzhiyun #define ASL_CV_FILE_HAS_SWITCHED(a) 0 495*4882a593Smuzhiyun #define ASL_CV_INIT_FILETREE(a,b) 496*4882a593Smuzhiyun 497*4882a593Smuzhiyun #endif 498*4882a593Smuzhiyun 499*4882a593Smuzhiyun #endif /* ACMACROS_H */ 500