xref: /illumos-gate/usr/src/uts/intel/sys/acpi/acmacros.h (revision 35786f68)

/******************************************************************************
 *
 * Name: acmacros.h - C macros for the entire subsystem.
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
 * All rights reserved.
 *
 * 2. License
 *
 * 2.1. This is your license from Intel Corp. under its intellectual property
 * rights. You may have additional license terms from the party that provided
 * you this software, covering your right to use that party's intellectual
 * property rights.
 *
 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
 * copy of the source code appearing in this file ("Covered Code") an
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
 * base code distributed originally by Intel ("Original Intel Code") to copy,
 * make derivatives, distribute, use and display any portion of the Covered
 * Code in any form, with the right to sublicense such rights; and
 *
 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
 * license (with the right to sublicense), under only those claims of Intel
 * patents that are infringed by the Original Intel Code, to make, use, sell,
 * offer to sell, and import the Covered Code and derivative works thereof
 * solely to the minimum extent necessary to exercise the above copyright
 * license, and in no event shall the patent license extend to any additions
 * to or modifications of the Original Intel Code. No other license or right
 * is granted directly or by implication, estoppel or otherwise;
 *
 * The above copyright and patent license is granted only if the following
 * conditions are met:
 *
 * 3. Conditions
 *
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification with rights to further distribute source must include
 * the above Copyright Notice, the above License, this list of Conditions,
 * and the following Disclaimer and Export Compliance provision. In addition,
 * Licensee must cause all Covered Code to which Licensee contributes to
 * contain a file documenting the changes Licensee made to create that Covered
 * Code and the date of any change. Licensee must include in that file the
 * documentation of any changes made by any predecessor Licensee. Licensee
 * must include a prominent statement that the modification is derived,
 * directly or indirectly, from Original Intel Code.
 *
 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification without rights to further distribute source must
 * include the following Disclaimer and Export Compliance provision in the
 * documentation and/or other materials provided with distribution. In
 * addition, Licensee may not authorize further sublicense of source of any
 * portion of the Covered Code, and must include terms to the effect that the
 * license from Licensee to its licensee is limited to the intellectual
 * property embodied in the software Licensee provides to its licensee, and
 * not to intellectual property embodied in modifications its licensee may
 * make.
 *
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
 * substantial portion of the Covered Code or modification must reproduce the
 * above Copyright Notice, and the following Disclaimer and Export Compliance
 * provision in the documentation and/or other materials provided with the
 * distribution.
 *
 * 3.4. Intel retains all right, title, and interest in and to the Original
 * Intel Code.
 *
 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
 * Intel shall be used in advertising or otherwise to promote the sale, use or
 * other dealings in products derived from or relating to the Covered Code
 * without prior written authorization from Intel.
 *
 * 4. Disclaimer and Export Compliance
 *
 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
 * PARTICULAR PURPOSE.
 *
 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
 * LIMITED REMEDY.
 *
 * 4.3. Licensee shall not export, either directly or indirectly, any of this
 * software or system incorporating such software without first obtaining any
 * required license or other approval from the U. S. Department of Commerce or
 * any other agency or department of the United States Government. In the
 * event Licensee exports any such software from the United States or
 * re-exports any such software from a foreign destination, Licensee shall
 * ensure that the distribution and export/re-export of the software is in
 * compliance with all laws, regulations, orders, or other restrictions of the
 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 * any of its subsidiaries will export/re-export any technical data, process,
 * software, or service, directly or indirectly, to any country for which the
 * United States government or any agency thereof requires an export license,
 * other governmental approval, or letter of assurance, without first obtaining
 * such license, approval or letter.
 *
 *****************************************************************************
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * following license:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 *****************************************************************************/

#ifndef __ACMACROS_H__
#define __ACMACROS_H__


/*
 * Extract data using a pointer. Any more than a byte and we
 * get into potential alignment issues -- see the STORE macros below.
 * Use with care.
 */
#define ACPI_CAST8(ptr)                 ACPI_CAST_PTR (UINT8, (ptr))
#define ACPI_CAST16(ptr)                ACPI_CAST_PTR (UINT16, (ptr))
#define ACPI_CAST32(ptr)                ACPI_CAST_PTR (UINT32, (ptr))
#define ACPI_CAST64(ptr)                ACPI_CAST_PTR (UINT64, (ptr))
#define ACPI_GET8(ptr)                  (*ACPI_CAST8 (ptr))
#define ACPI_GET16(ptr)                 (*ACPI_CAST16 (ptr))
#define ACPI_GET32(ptr)                 (*ACPI_CAST32 (ptr))
#define ACPI_GET64(ptr)                 (*ACPI_CAST64 (ptr))
#define ACPI_SET8(ptr, val)             (*ACPI_CAST8 (ptr) = (UINT8) (val))
#define ACPI_SET16(ptr, val)            (*ACPI_CAST16 (ptr) = (UINT16) (val))
#define ACPI_SET32(ptr, val)            (*ACPI_CAST32 (ptr) = (UINT32) (val))
#define ACPI_SET64(ptr, val)            (*ACPI_CAST64 (ptr) = (UINT64) (val))

/*
 * 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.
 */
#define ACPI_FORMAT_UINT64(i)           ACPI_HIDWORD(i), ACPI_LODWORD(i)


/*
 * Macros for moving data around to/from buffers that are possibly unaligned.
 * If the hardware supports the transfer of unaligned data, just do the store.
 * Otherwise, we have to move one byte at a time.
 */
#ifdef ACPI_BIG_ENDIAN
/*
 * Macros for big-endian machines
 */

/* These macros reverse the bytes during the move, converting little-endian to big endian */

                                                     /* Big Endian      <==        Little Endian */
                                                     /*  Hi...Lo                     Lo...Hi     */
/* 16-bit source, 16/32/64 destination */

#define ACPI_MOVE_16_TO_16(d, s)        {((  UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[1];\
                                         ((  UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[0];}

#define ACPI_MOVE_16_TO_32(d, s)        {(*(UINT32 *)(void *)(d))=0;\
                                           ((UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
                                           ((UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}

#define ACPI_MOVE_16_TO_64(d, s)        {(*(UINT64 *)(void *)(d))=0;\
                                           ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
                                           ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}

/* 32-bit source, 16/32/64 destination */

#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)    /* Truncate to 16 */

#define ACPI_MOVE_32_TO_32(d, s)        {((  UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[3];\
                                         ((  UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[2];\
                                         ((  UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[1];\
                                         ((  UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[0];}

#define ACPI_MOVE_32_TO_64(d, s)        {(*(UINT64 *)(void *)(d))=0;\
                                           ((UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
                                           ((UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
                                           ((UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
                                           ((UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}

/* 64-bit source, 16/32/64 destination */

#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)    /* Truncate to 16 */

#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)    /* Truncate to 32 */

#define ACPI_MOVE_64_TO_64(d, s)        {((  UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[7];\
                                         ((  UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[6];\
                                         ((  UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[5];\
                                         ((  UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[4];\
                                         ((  UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[3];\
                                         ((  UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[2];\
                                         ((  UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[1];\
                                         ((  UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[0];}
#else
/*
 * Macros for little-endian machines
 */

#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED

/* The hardware supports unaligned transfers, just do the little-endian move */

/* 16-bit source, 16/32/64 destination */

#define ACPI_MOVE_16_TO_16(d, s)        *(UINT16 *)(void *)(d) = *(UINT16 *)(void *)(s)
#define ACPI_MOVE_16_TO_32(d, s)        *(UINT32 *)(void *)(d) = *(UINT16 *)(void *)(s)
#define ACPI_MOVE_16_TO_64(d, s)        *(UINT64 *)(void *)(d) = *(UINT16 *)(void *)(s)

/* 32-bit source, 16/32/64 destination */

#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)    /* Truncate to 16 */
#define ACPI_MOVE_32_TO_32(d, s)        *(UINT32 *)(void *)(d) = *(UINT32 *)(void *)(s)
#define ACPI_MOVE_32_TO_64(d, s)        *(UINT64 *)(void *)(d) = *(UINT32 *)(void *)(s)

/* 64-bit source, 16/32/64 destination */

#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)    /* Truncate to 16 */
#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)    /* Truncate to 32 */
#define ACPI_MOVE_64_TO_64(d, s)        *(UINT64 *)(void *)(d) = *(UINT64 *)(void *)(s)

#else
/*
 * The hardware does not support unaligned transfers. We must move the
 * data one byte at a time. These macros work whether the source or
 * the destination (or both) is/are unaligned. (Little-endian move)
 */

/* 16-bit source, 16/32/64 destination */

#define ACPI_MOVE_16_TO_16(d, s)        {((  UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
                                         ((  UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];}

#define ACPI_MOVE_16_TO_32(d, s)        {(*(UINT32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
#define ACPI_MOVE_16_TO_64(d, s)        {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}

/* 32-bit source, 16/32/64 destination */

#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)    /* Truncate to 16 */

#define ACPI_MOVE_32_TO_32(d, s)        {((  UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
                                         ((  UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
                                         ((  UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
                                         ((  UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];}

#define ACPI_MOVE_32_TO_64(d, s)        {(*(UINT64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}

/* 64-bit source, 16/32/64 destination */

#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)    /* Truncate to 16 */
#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)    /* Truncate to 32 */
#define ACPI_MOVE_64_TO_64(d, s)        {((  UINT8 *)(void *)(d))[0] = ((UINT8 *)(void *)(s))[0];\
                                         ((  UINT8 *)(void *)(d))[1] = ((UINT8 *)(void *)(s))[1];\
                                         ((  UINT8 *)(void *)(d))[2] = ((UINT8 *)(void *)(s))[2];\
                                         ((  UINT8 *)(void *)(d))[3] = ((UINT8 *)(void *)(s))[3];\
                                         ((  UINT8 *)(void *)(d))[4] = ((UINT8 *)(void *)(s))[4];\
                                         ((  UINT8 *)(void *)(d))[5] = ((UINT8 *)(void *)(s))[5];\
                                         ((  UINT8 *)(void *)(d))[6] = ((UINT8 *)(void *)(s))[6];\
                                         ((  UINT8 *)(void *)(d))[7] = ((UINT8 *)(void *)(s))[7];}
#endif
#endif


/*
 * Fast power-of-two math macros for non-optimized compilers
 */
#define _ACPI_DIV(value, PowerOf2)      ((UINT32) ((value) >> (PowerOf2)))
#define _ACPI_MUL(value, PowerOf2)      ((UINT32) ((value) << (PowerOf2)))
#define _ACPI_MOD(value, Divisor)       ((UINT32) ((value) & ((Divisor) -1)))

#define ACPI_DIV_2(a)                   _ACPI_DIV(a, 1)
#define ACPI_MUL_2(a)                   _ACPI_MUL(a, 1)
#define ACPI_MOD_2(a)                   _ACPI_MOD(a, 2)

#define ACPI_DIV_4(a)                   _ACPI_DIV(a, 2)
#define ACPI_MUL_4(a)                   _ACPI_MUL(a, 2)
#define ACPI_MOD_4(a)                   _ACPI_MOD(a, 4)

#define ACPI_DIV_8(a)                   _ACPI_DIV(a, 3)
#define ACPI_MUL_8(a)                   _ACPI_MUL(a, 3)
#define ACPI_MOD_8(a)                   _ACPI_MOD(a, 8)

#define ACPI_DIV_16(a)                  _ACPI_DIV(a, 4)
#define ACPI_MUL_16(a)                  _ACPI_MUL(a, 4)
#define ACPI_MOD_16(a)                  _ACPI_MOD(a, 16)

#define ACPI_DIV_32(a)                  _ACPI_DIV(a, 5)
#define ACPI_MUL_32(a)                  _ACPI_MUL(a, 5)
#define ACPI_MOD_32(a)                  _ACPI_MOD(a, 32)

/* Test for ASCII character */

#define ACPI_IS_ASCII(c)                ((c) < 0x80)

/* Signed integers */

#define ACPI_SIGN_POSITIVE              0
#define ACPI_SIGN_NEGATIVE              1


/*
 * Rounding macros (Power of two boundaries only)
 */
#define ACPI_ROUND_DOWN(value, boundary)    (((ACPI_SIZE)(value)) & \
                                                (~(((ACPI_SIZE) boundary)-1)))

#define ACPI_ROUND_UP(value, boundary)      ((((ACPI_SIZE)(value)) + \
                                                (((ACPI_SIZE) boundary)-1)) & \
                                                (~(((ACPI_SIZE) boundary)-1)))

/* Note: sizeof(ACPI_SIZE) evaluates to either 4 or 8 (32- vs 64-bit mode) */

#define ACPI_ROUND_DOWN_TO_32BIT(a)         ACPI_ROUND_DOWN(a, 4)
#define ACPI_ROUND_DOWN_TO_64BIT(a)         ACPI_ROUND_DOWN(a, 8)
#define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a)   ACPI_ROUND_DOWN(a, sizeof(ACPI_SIZE))

#define ACPI_ROUND_UP_TO_32BIT(a)           ACPI_ROUND_UP(a, 4)
#define ACPI_ROUND_UP_TO_64BIT(a)           ACPI_ROUND_UP(a, 8)
#define ACPI_ROUND_UP_TO_NATIVE_WORD(a)     ACPI_ROUND_UP(a, sizeof(ACPI_SIZE))

#define ACPI_ROUND_BITS_UP_TO_BYTES(a)      ACPI_DIV_8((a) + 7)
#define ACPI_ROUND_BITS_DOWN_TO_BYTES(a)    ACPI_DIV_8((a))

#define ACPI_ROUND_UP_TO_1K(a)              (((a) + 1023) >> 10)

/* Generic (non-power-of-two) rounding */

#define ACPI_ROUND_UP_TO(value, boundary)   (((value) + ((boundary)-1)) / (boundary))

#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)        ((((UINT8)  (a)) & 0x02) ? (r)+1 : (r))
#define __ACPI_FIND_LAST_BIT_4(a, r)        ((((UINT8)  (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)        ((((UINT8)  (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)       ((((UINT16) (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)       ((((UINT32) (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)       ((((UINT64) (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)