diff options
Diffstat (limited to 'drivers/acpi/acpica/acmacros.h')
| -rw-r--r-- | drivers/acpi/acpica/acmacros.h | 74 |
1 files changed, 68 insertions, 6 deletions
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index a3b95431b7c5..c3337514e0ed 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2016, Intel Corp. + * Copyright (C) 2000 - 2017, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -46,7 +46,7 @@ /* * Extract data using a pointer. Any more than a byte and we - * get into potential aligment issues -- see the STORE macros below. + * get into potential alignment issues -- see the STORE macros below. * Use with care. */ #define ACPI_CAST8(ptr) ACPI_CAST_PTR (u8, (ptr)) @@ -63,7 +63,7 @@ #define ACPI_SET64(ptr, val) (*ACPI_CAST64 (ptr) = (u64) (val)) /* - * printf() format helper. This macros is a workaround for the difficulties + * printf() format helper. This macro is a workaround for the difficulties * with emitting 64-bit integers and 64-bit pointers with the same code * for both 32-bit and 64-bit hosts. */ @@ -260,8 +260,70 @@ #define ACPI_IS_MISALIGNED(value) (((acpi_size) value) & (sizeof(acpi_size)-1)) +/* Generic bit manipulation */ + +#ifndef ACPI_USE_NATIVE_BIT_FINDER + +#define __ACPI_FIND_LAST_BIT_2(a, r) ((((u8) (a)) & 0x02) ? (r)+1 : (r)) +#define __ACPI_FIND_LAST_BIT_4(a, r) ((((u8) (a)) & 0x0C) ? \ + __ACPI_FIND_LAST_BIT_2 ((a)>>2, (r)+2) : \ + __ACPI_FIND_LAST_BIT_2 ((a), (r))) +#define __ACPI_FIND_LAST_BIT_8(a, r) ((((u8) (a)) & 0xF0) ? \ + __ACPI_FIND_LAST_BIT_4 ((a)>>4, (r)+4) : \ + __ACPI_FIND_LAST_BIT_4 ((a), (r))) +#define __ACPI_FIND_LAST_BIT_16(a, r) ((((u16) (a)) & 0xFF00) ? \ + __ACPI_FIND_LAST_BIT_8 ((a)>>8, (r)+8) : \ + __ACPI_FIND_LAST_BIT_8 ((a), (r))) +#define __ACPI_FIND_LAST_BIT_32(a, r) ((((u32) (a)) & 0xFFFF0000) ? \ + __ACPI_FIND_LAST_BIT_16 ((a)>>16, (r)+16) : \ + __ACPI_FIND_LAST_BIT_16 ((a), (r))) +#define __ACPI_FIND_LAST_BIT_64(a, r) ((((u64) (a)) & 0xFFFFFFFF00000000) ? \ + __ACPI_FIND_LAST_BIT_32 ((a)>>32, (r)+32) : \ + __ACPI_FIND_LAST_BIT_32 ((a), (r))) + +#define ACPI_FIND_LAST_BIT_8(a) ((a) ? __ACPI_FIND_LAST_BIT_8 (a, 1) : 0) +#define ACPI_FIND_LAST_BIT_16(a) ((a) ? __ACPI_FIND_LAST_BIT_16 (a, 1) : 0) +#define ACPI_FIND_LAST_BIT_32(a) ((a) ? __ACPI_FIND_LAST_BIT_32 (a, 1) : 0) +#define ACPI_FIND_LAST_BIT_64(a) ((a) ? __ACPI_FIND_LAST_BIT_64 (a, 1) : 0) + +#define __ACPI_FIND_FIRST_BIT_2(a, r) ((((u8) (a)) & 0x01) ? (r) : (r)+1) +#define __ACPI_FIND_FIRST_BIT_4(a, r) ((((u8) (a)) & 0x03) ? \ + __ACPI_FIND_FIRST_BIT_2 ((a), (r)) : \ + __ACPI_FIND_FIRST_BIT_2 ((a)>>2, (r)+2)) +#define __ACPI_FIND_FIRST_BIT_8(a, r) ((((u8) (a)) & 0x0F) ? \ + __ACPI_FIND_FIRST_BIT_4 ((a), (r)) : \ + __ACPI_FIND_FIRST_BIT_4 ((a)>>4, (r)+4)) +#define __ACPI_FIND_FIRST_BIT_16(a, r) ((((u16) (a)) & 0x00FF) ? \ + __ACPI_FIND_FIRST_BIT_8 ((a), (r)) : \ + __ACPI_FIND_FIRST_BIT_8 ((a)>>8, (r)+8)) +#define __ACPI_FIND_FIRST_BIT_32(a, r) ((((u32) (a)) & 0x0000FFFF) ? \ + __ACPI_FIND_FIRST_BIT_16 ((a), (r)) : \ + __ACPI_FIND_FIRST_BIT_16 ((a)>>16, (r)+16)) +#define __ACPI_FIND_FIRST_BIT_64(a, r) ((((u64) (a)) & 0x00000000FFFFFFFF) ? \ + __ACPI_FIND_FIRST_BIT_32 ((a), (r)) : \ + __ACPI_FIND_FIRST_BIT_32 ((a)>>32, (r)+32)) + +#define ACPI_FIND_FIRST_BIT_8(a) ((a) ? __ACPI_FIND_FIRST_BIT_8 (a, 1) : 0) +#define ACPI_FIND_FIRST_BIT_16(a) ((a) ? __ACPI_FIND_FIRST_BIT_16 (a, 1) : 0) +#define ACPI_FIND_FIRST_BIT_32(a) ((a) ? __ACPI_FIND_FIRST_BIT_32 (a, 1) : 0) +#define ACPI_FIND_FIRST_BIT_64(a) ((a) ? __ACPI_FIND_FIRST_BIT_64 (a, 1) : 0) + +#endif /* ACPI_USE_NATIVE_BIT_FINDER */ + /* Generic (power-of-two) rounding */ +#define ACPI_ROUND_UP_POWER_OF_TWO_8(a) ((u8) \ + (((u16) 1) << ACPI_FIND_LAST_BIT_8 ((a) - 1))) +#define ACPI_ROUND_DOWN_POWER_OF_TWO_8(a) ((u8) \ + (((u16) 1) << (ACPI_FIND_LAST_BIT_8 ((a)) - 1))) +#define ACPI_ROUND_UP_POWER_OF_TWO_16(a) ((u16) \ + (((u32) 1) << ACPI_FIND_LAST_BIT_16 ((a) - 1))) +#define ACPI_ROUND_DOWN_POWER_OF_TWO_16(a) ((u16) \ + (((u32) 1) << (ACPI_FIND_LAST_BIT_16 ((a)) - 1))) +#define ACPI_ROUND_UP_POWER_OF_TWO_32(a) ((u32) \ + (((u64) 1) << ACPI_FIND_LAST_BIT_32 ((a) - 1))) +#define ACPI_ROUND_DOWN_POWER_OF_TWO_32(a) ((u32) \ + (((u64) 1) << (ACPI_FIND_LAST_BIT_32 ((a)) - 1))) #define ACPI_IS_ALIGNED(a, s) (((a) & ((s) - 1)) == 0) #define ACPI_IS_POWER_OF_TWO(a) ACPI_IS_ALIGNED(a, a) @@ -270,8 +332,8 @@ * Bit positions start at zero. * MASK_BITS_ABOVE creates a mask starting AT the position and above * MASK_BITS_BELOW creates a mask starting one bit BELOW the position - * MASK_BITS_ABOVE/BELOW accpets a bit offset to create a mask - * MASK_BITS_ABOVE/BELOW_32/64 accpets a bit width to create a mask + * MASK_BITS_ABOVE/BELOW accepts a bit offset to create a mask + * MASK_BITS_ABOVE/BELOW_32/64 accepts a bit width to create a mask * Note: The ACPI_INTEGER_BIT_SIZE check is used to bypass compiler * differences with the shift operator */ @@ -389,7 +451,7 @@ */ #ifndef ACPI_NO_ERROR_MESSAGES /* - * Error reporting. Callers module and line number are inserted by AE_INFO, + * Error reporting. The callers module and line number are inserted by AE_INFO, * the plist contains a set of parens to allow variable-length lists. * These macros are used for both the debug and non-debug versions of the code. */ |