xref: /freebsd-10.1-release/sys/contrib/dev/acpica/include/acbuffer.h

/******************************************************************************
 *
 * Name: acbuffer.h - Support for buffers returned by ACPI predefined names
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2013, Intel Corp.
 * All rights reserved.
 *
 * 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.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * 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 MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
 */

#ifndef __ACBUFFER_H__
#define __ACBUFFER_H__

/*
 * Contains buffer structures for these predefined names:
 * _FDE, _GRT, _GTM, _PLD, _SRT
 */

/*
 * Note: C bitfields are not used for this reason:
 *
 * "Bitfields are great and easy to read, but unfortunately the C language
 * does not specify the layout of bitfields in memory, which means they are
 * essentially useless for dealing with packed data in on-disk formats or
 * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
 * this decision was a design error in C. Ritchie could have picked an order
 * and stuck with it." Norman Ramsey.
 * See http://stackoverflow.com/a/1053662/41661
 */


/* _FDE return value */

typedef struct acpi_fde_info
{
    UINT32              Floppy0;
    UINT32              Floppy1;
    UINT32              Floppy2;
    UINT32              Floppy3;
    UINT32              Tape;

} ACPI_FDE_INFO;

/*
 * _GRT return value
 * _SRT input value
 */
typedef struct acpi_grt_info
{
    UINT16              Year;
    UINT8               Month;
    UINT8               Day;
    UINT8               Hour;
    UINT8               Minute;
    UINT8               Second;
    UINT8               Valid;
    UINT16              Milliseconds;
    UINT16              Timezone;
    UINT8               Daylight;
    UINT8               Reserved[3];

} ACPI_GRT_INFO;

/* _GTM return value */

typedef struct acpi_gtm_info
{
    UINT32              PioSpeed0;
    UINT32              DmaSpeed0;
    UINT32              PioSpeed1;
    UINT32              DmaSpeed1;
    UINT32              Flags;

} ACPI_GTM_INFO;

/*
 * Formatted _PLD return value. The minimum size is a package containing
 * one buffer.
 * Revision 1: Buffer is 16 bytes (128 bits)
 * Revision 2: Buffer is 20 bytes (160 bits)
 *
 * Note: This structure is returned from the AcpiDecodePldBuffer
 * interface.
 */
typedef struct acpi_pld_info
{
    UINT8               Revision;
    UINT8               IgnoreColor;
    UINT32              Color;
    UINT16              Width;
    UINT16              Height;
    UINT8               UserVisible;
    UINT8               Dock;
    UINT8               Lid;
    UINT8               Panel;
    UINT8               VerticalPosition;
    UINT8               HorizontalPosition;
    UINT8               Shape;
    UINT8               GroupOrientation;
    UINT8               GroupToken;
    UINT8               GroupPosition;
    UINT8               Bay;
    UINT8               Ejectable;
    UINT8               OspmEjectRequired;
    UINT8               CabinetNumber;
    UINT8               CardCageNumber;
    UINT8               Reference;
    UINT8               Rotation;
    UINT8               Order;
    UINT8               Reserved;
    UINT16              VerticalOffset;
    UINT16              HorizontalOffset;

} ACPI_PLD_INFO;


/*
 * Macros to:
 *     1) Convert a _PLD buffer to internal ACPI_PLD_INFO format - ACPI_PLD_GET*
 *        (Used by AcpiDecodePldBuffer)
 *     2) Construct a _PLD buffer - ACPI_PLD_SET*
 *        (Intended for BIOS use only)
 */
#define ACPI_PLD_REV1_BUFFER_SIZE               16 /* For Revision 1 of the buffer (From ACPI spec) */
#define ACPI_PLD_BUFFER_SIZE                    20 /* For Revision 2 of the buffer (From ACPI spec) */

/* First 32-bit dword, bits 0:32 */

#define ACPI_PLD_GET_REVISION(dword)            ACPI_GET_BITS (dword, 0, ACPI_7BIT_MASK)
#define ACPI_PLD_SET_REVISION(dword,value)      ACPI_SET_BITS (dword, 0, ACPI_7BIT_MASK, value)     /* Offset 0, Len 7 */

#define ACPI_PLD_GET_IGNORE_COLOR(dword)        ACPI_GET_BITS (dword, 7, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_IGNORE_COLOR(dword,value)  ACPI_SET_BITS (dword, 7, ACPI_1BIT_MASK, value)     /* Offset 7, Len 1 */

#define ACPI_PLD_GET_COLOR(dword)               ACPI_GET_BITS (dword, 8, ACPI_24BIT_MASK)
#define ACPI_PLD_SET_COLOR(dword,value)         ACPI_SET_BITS (dword, 8, ACPI_24BIT_MASK, value)    /* Offset 8, Len 24 */

/* Second 32-bit dword, bits 33:63 */

#define ACPI_PLD_GET_WIDTH(dword)               ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
#define ACPI_PLD_SET_WIDTH(dword,value)         ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value)    /* Offset 32+0=32, Len 16 */

#define ACPI_PLD_GET_HEIGHT(dword)              ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
#define ACPI_PLD_SET_HEIGHT(dword,value)        ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value)   /* Offset 32+16=48, Len 16 */

/* Third 32-bit dword, bits 64:95 */

#define ACPI_PLD_GET_USER_VISIBLE(dword)        ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_USER_VISIBLE(dword,value)  ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value)     /* Offset 64+0=64, Len 1 */

#define ACPI_PLD_GET_DOCK(dword)                ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_DOCK(dword,value)          ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value)     /* Offset 64+1=65, Len 1 */

#define ACPI_PLD_GET_LID(dword)                 ACPI_GET_BITS (dword, 2, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_LID(dword,value)           ACPI_SET_BITS (dword, 2, ACPI_1BIT_MASK, value)     /* Offset 64+2=66, Len 1 */

#define ACPI_PLD_GET_PANEL(dword)               ACPI_GET_BITS (dword, 3, ACPI_3BIT_MASK)
#define ACPI_PLD_SET_PANEL(dword,value)         ACPI_SET_BITS (dword, 3, ACPI_3BIT_MASK, value)     /* Offset 64+3=67, Len 3 */

#define ACPI_PLD_GET_VERTICAL(dword)            ACPI_GET_BITS (dword, 6, ACPI_2BIT_MASK)
#define ACPI_PLD_SET_VERTICAL(dword,value)      ACPI_SET_BITS (dword, 6, ACPI_2BIT_MASK, value)     /* Offset 64+6=70, Len 2 */

#define ACPI_PLD_GET_HORIZONTAL(dword)          ACPI_GET_BITS (dword, 8, ACPI_2BIT_MASK)
#define ACPI_PLD_SET_HORIZONTAL(dword,value)    ACPI_SET_BITS (dword, 8, ACPI_2BIT_MASK, value)     /* Offset 64+8=72, Len 2 */

#define ACPI_PLD_GET_SHAPE(dword)               ACPI_GET_BITS (dword, 10, ACPI_4BIT_MASK)
#define ACPI_PLD_SET_SHAPE(dword,value)         ACPI_SET_BITS (dword, 10, ACPI_4BIT_MASK, value)    /* Offset 64+10=74, Len 4 */

#define ACPI_PLD_GET_ORIENTATION(dword)         ACPI_GET_BITS (dword, 14, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_ORIENTATION(dword,value)   ACPI_SET_BITS (dword, 14, ACPI_1BIT_MASK, value)    /* Offset 64+14=78, Len 1 */

#define ACPI_PLD_GET_TOKEN(dword)               ACPI_GET_BITS (dword, 15, ACPI_8BIT_MASK)
#define ACPI_PLD_SET_TOKEN(dword,value)         ACPI_SET_BITS (dword, 15, ACPI_8BIT_MASK, value)    /* Offset 64+15=79, Len 8 */

#define ACPI_PLD_GET_POSITION(dword)            ACPI_GET_BITS (dword, 23, ACPI_8BIT_MASK)
#define ACPI_PLD_SET_POSITION(dword,value)      ACPI_SET_BITS (dword, 23, ACPI_8BIT_MASK, value)    /* Offset 64+23=87, Len 8 */

#define ACPI_PLD_GET_BAY(dword)                 ACPI_GET_BITS (dword, 31, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_BAY(dword,value)           ACPI_SET_BITS (dword, 31, ACPI_1BIT_MASK, value)    /* Offset 64+31=95, Len 1 */

/* Fourth 32-bit dword, bits 96:127 */

#define ACPI_PLD_GET_EJECTABLE(dword)           ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_EJECTABLE(dword,value)     ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value)     /* Offset 96+0=96, Len 1 */

#define ACPI_PLD_GET_OSPM_EJECT(dword)          ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_OSPM_EJECT(dword,value)    ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value)     /* Offset 96+1=97, Len 1 */

#define ACPI_PLD_GET_CABINET(dword)             ACPI_GET_BITS (dword, 2, ACPI_8BIT_MASK)
#define ACPI_PLD_SET_CABINET(dword,value)       ACPI_SET_BITS (dword, 2, ACPI_8BIT_MASK, value)     /* Offset 96+2=98, Len 8 */

#define ACPI_PLD_GET_CARD_CAGE(dword)           ACPI_GET_BITS (dword, 10, ACPI_8BIT_MASK)
#define ACPI_PLD_SET_CARD_CAGE(dword,value)     ACPI_SET_BITS (dword, 10, ACPI_8BIT_MASK, value)    /* Offset 96+10=106, Len 8 */

#define ACPI_PLD_GET_REFERENCE(dword)           ACPI_GET_BITS (dword, 18, ACPI_1BIT_MASK)
#define ACPI_PLD_SET_REFERENCE(dword,value)     ACPI_SET_BITS (dword, 18, ACPI_1BIT_MASK, value)    /* Offset 96+18=114, Len 1 */

#define ACPI_PLD_GET_ROTATION(dword)            ACPI_GET_BITS (dword, 19, ACPI_4BIT_MASK)
#define ACPI_PLD_SET_ROTATION(dword,value)      ACPI_SET_BITS (dword, 19, ACPI_4BIT_MASK, value)    /* Offset 96+19=115, Len 4 */

#define ACPI_PLD_GET_ORDER(dword)               ACPI_GET_BITS (dword, 23, ACPI_5BIT_MASK)
#define ACPI_PLD_SET_ORDER(dword,value)         ACPI_SET_BITS (dword, 23, ACPI_5BIT_MASK, value)    /* Offset 96+23=119, Len 5 */

/* Fifth 32-bit dword, bits 128:159 (Revision 2 of _PLD only) */

#define ACPI_PLD_GET_VERT_OFFSET(dword)         ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
#define ACPI_PLD_SET_VERT_OFFSET(dword,value)   ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value)    /* Offset 128+0=128, Len 16 */

#define ACPI_PLD_GET_HORIZ_OFFSET(dword)        ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
#define ACPI_PLD_SET_HORIZ_OFFSET(dword,value)  ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value)   /* Offset 128+16=144, Len 16 */


#endif /* ACBUFFER_H */