drivers/bus/acpi/acpica/include/acbuffer.h

   1 /******************************************************************************
   2  *
   3  * Name: acbuffer.h - Support for buffers returned by ACPI predefined names
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2019, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #ifndef __ACBUFFER_H__
  45 #define __ACBUFFER_H__
  46
  47 /*
  48  * Contains buffer structures for these predefined names:
  49  * _FDE, _GRT, _GTM, _PLD, _SRT
  50  */
  51
  52 /*
  53  * Note: C bitfields are not used for this reason:
  54  *
  55  * "Bitfields are great and easy to read, but unfortunately the C language
  56  * does not specify the layout of bitfields in memory, which means they are
  57  * essentially useless for dealing with packed data in on-disk formats or
  58  * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
  59  * this decision was a design error in C. Ritchie could have picked an order
  60  * and stuck with it." Norman Ramsey.
  61  * See http://stackoverflow.com/a/1053662/41661
  62  */
  63
  64
  65 /* _FDE return value */
  66
  67 typedef struct acpi_fde_info
  68 {
  69     UINT32              Floppy0;
  70     UINT32              Floppy1;
  71     UINT32              Floppy2;
  72     UINT32              Floppy3;
  73     UINT32              Tape;
  74
  75 } ACPI_FDE_INFO;
  76
  77 /*
  78  * _GRT return value
  79  * _SRT input value
  80  */
  81 typedef struct acpi_grt_info
  82 {
  83     UINT16              Year;
  84     UINT8               Month;
  85     UINT8               Day;
  86     UINT8               Hour;
  87     UINT8               Minute;
  88     UINT8               Second;
  89     UINT8               Valid;
  90     UINT16              Milliseconds;
  91     UINT16              Timezone;
  92     UINT8               Daylight;
  93     UINT8               Reserved[3];
  94
  95 } ACPI_GRT_INFO;
  96
  97 /* _GTM return value */
  98
  99 typedef struct acpi_gtm_info
 100 {
 101     UINT32              PioSpeed0;
 102     UINT32              DmaSpeed0;
 103     UINT32              PioSpeed1;
 104     UINT32              DmaSpeed1;
 105     UINT32              Flags;
 106
 107 } ACPI_GTM_INFO;
 108
 109 /*
 110  * Formatted _PLD return value. The minimum size is a package containing
 111  * one buffer.
 112  * Revision 1: Buffer is 16 bytes (128 bits)
 113  * Revision 2: Buffer is 20 bytes (160 bits)
 114  *
 115  * Note: This structure is returned from the AcpiDecodePldBuffer
 116  * interface.
 117  */
 118 typedef struct acpi_pld_info
 119 {
 120     UINT8               Revision;
 121     UINT8               IgnoreColor;
 122     UINT8               Red;
 123     UINT8               Green;
 124     UINT8               Blue;
 125     UINT16              Width;
 126     UINT16              Height;
 127     UINT8               UserVisible;
 128     UINT8               Dock;
 129     UINT8               Lid;
 130     UINT8               Panel;
 131     UINT8               VerticalPosition;
 132     UINT8               HorizontalPosition;
 133     UINT8               Shape;
 134     UINT8               GroupOrientation;
 135     UINT8               GroupToken;
 136     UINT8               GroupPosition;
 137     UINT8               Bay;
 138     UINT8               Ejectable;
 139     UINT8               OspmEjectRequired;
 140     UINT8               CabinetNumber;
 141     UINT8               CardCageNumber;
 142     UINT8               Reference;
 143     UINT8               Rotation;
 144     UINT8               Order;
 145     UINT8               Reserved;
 146     UINT16              VerticalOffset;
 147     UINT16              HorizontalOffset;
 148
 149 } ACPI_PLD_INFO;
 150
 151
 152 /*
 153  * Macros to:
 154  *     1) Convert a _PLD buffer to internal ACPI_PLD_INFO format - ACPI_PLD_GET*
 155  *        (Used by AcpiDecodePldBuffer)
 156  *     2) Construct a _PLD buffer - ACPI_PLD_SET*
 157  *        (Intended for BIOS use only)
 158  */
 159 #define ACPI_PLD_REV1_BUFFER_SIZE               16 /* For Revision 1 of the buffer (From ACPI spec) */
 160 #define ACPI_PLD_REV2_BUFFER_SIZE               20 /* For Revision 2 of the buffer (From ACPI spec) */
 161 #define ACPI_PLD_BUFFER_SIZE                    20 /* For Revision 2 of the buffer (From ACPI spec) */
 162
 163 /* First 32-bit dword, bits 0:32 */
 164
 165 #define ACPI_PLD_GET_REVISION(dword)            ACPI_GET_BITS (dword, 0, ACPI_7BIT_MASK)
 166 #define ACPI_PLD_SET_REVISION(dword,value)      ACPI_SET_BITS (dword, 0, ACPI_7BIT_MASK, value)     /* Offset 0, Len 7 */
 167
 168 #define ACPI_PLD_GET_IGNORE_COLOR(dword)        ACPI_GET_BITS (dword, 7, ACPI_1BIT_MASK)
 169 #define ACPI_PLD_SET_IGNORE_COLOR(dword,value)  ACPI_SET_BITS (dword, 7, ACPI_1BIT_MASK, value)     /* Offset 7, Len 1 */
 170
 171 #define ACPI_PLD_GET_RED(dword)                 ACPI_GET_BITS (dword, 8, ACPI_8BIT_MASK)
 172 #define ACPI_PLD_SET_RED(dword,value)           ACPI_SET_BITS (dword, 8, ACPI_8BIT_MASK, value)    /* Offset 8, Len 8 */
 173
 174 #define ACPI_PLD_GET_GREEN(dword)               ACPI_GET_BITS (dword, 16, ACPI_8BIT_MASK)
 175 #define ACPI_PLD_SET_GREEN(dword,value)         ACPI_SET_BITS (dword, 16, ACPI_8BIT_MASK, value)    /* Offset 16, Len 8 */
 176
 177 #define ACPI_PLD_GET_BLUE(dword)                ACPI_GET_BITS (dword, 24, ACPI_8BIT_MASK)
 178 #define ACPI_PLD_SET_BLUE(dword,value)          ACPI_SET_BITS (dword, 24, ACPI_8BIT_MASK, value)    /* Offset 24, Len 8 */
 179
 180 /* Second 32-bit dword, bits 33:63 */
 181
 182 #define ACPI_PLD_GET_WIDTH(dword)               ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
 183 #define ACPI_PLD_SET_WIDTH(dword,value)         ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value)    /* Offset 32+0=32, Len 16 */
 184
 185 #define ACPI_PLD_GET_HEIGHT(dword)              ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
 186 #define ACPI_PLD_SET_HEIGHT(dword,value)        ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value)   /* Offset 32+16=48, Len 16 */
 187
 188 /* Third 32-bit dword, bits 64:95 */
 189
 190 #define ACPI_PLD_GET_USER_VISIBLE(dword)        ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
 191 #define ACPI_PLD_SET_USER_VISIBLE(dword,value)  ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value)     /* Offset 64+0=64, Len 1 */
 192
 193 #define ACPI_PLD_GET_DOCK(dword)                ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
 194 #define ACPI_PLD_SET_DOCK(dword,value)          ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value)     /* Offset 64+1=65, Len 1 */
 195
 196 #define ACPI_PLD_GET_LID(dword)                 ACPI_GET_BITS (dword, 2, ACPI_1BIT_MASK)
 197 #define ACPI_PLD_SET_LID(dword,value)           ACPI_SET_BITS (dword, 2, ACPI_1BIT_MASK, value)     /* Offset 64+2=66, Len 1 */
 198
 199 #define ACPI_PLD_GET_PANEL(dword)               ACPI_GET_BITS (dword, 3, ACPI_3BIT_MASK)
 200 #define ACPI_PLD_SET_PANEL(dword,value)         ACPI_SET_BITS (dword, 3, ACPI_3BIT_MASK, value)     /* Offset 64+3=67, Len 3 */
 201
 202 #define ACPI_PLD_GET_VERTICAL(dword)            ACPI_GET_BITS (dword, 6, ACPI_2BIT_MASK)
 203 #define ACPI_PLD_SET_VERTICAL(dword,value)      ACPI_SET_BITS (dword, 6, ACPI_2BIT_MASK, value)     /* Offset 64+6=70, Len 2 */
 204
 205 #define ACPI_PLD_GET_HORIZONTAL(dword)          ACPI_GET_BITS (dword, 8, ACPI_2BIT_MASK)
 206 #define ACPI_PLD_SET_HORIZONTAL(dword,value)    ACPI_SET_BITS (dword, 8, ACPI_2BIT_MASK, value)     /* Offset 64+8=72, Len 2 */
 207
 208 #define ACPI_PLD_GET_SHAPE(dword)               ACPI_GET_BITS (dword, 10, ACPI_4BIT_MASK)
 209 #define ACPI_PLD_SET_SHAPE(dword,value)         ACPI_SET_BITS (dword, 10, ACPI_4BIT_MASK, value)    /* Offset 64+10=74, Len 4 */
 210
 211 #define ACPI_PLD_GET_ORIENTATION(dword)         ACPI_GET_BITS (dword, 14, ACPI_1BIT_MASK)
 212 #define ACPI_PLD_SET_ORIENTATION(dword,value)   ACPI_SET_BITS (dword, 14, ACPI_1BIT_MASK, value)    /* Offset 64+14=78, Len 1 */
 213
 214 #define ACPI_PLD_GET_TOKEN(dword)               ACPI_GET_BITS (dword, 15, ACPI_8BIT_MASK)
 215 #define ACPI_PLD_SET_TOKEN(dword,value)         ACPI_SET_BITS (dword, 15, ACPI_8BIT_MASK, value)    /* Offset 64+15=79, Len 8 */
 216
 217 #define ACPI_PLD_GET_POSITION(dword)            ACPI_GET_BITS (dword, 23, ACPI_8BIT_MASK)
 218 #define ACPI_PLD_SET_POSITION(dword,value)      ACPI_SET_BITS (dword, 23, ACPI_8BIT_MASK, value)    /* Offset 64+23=87, Len 8 */
 219
 220 #define ACPI_PLD_GET_BAY(dword)                 ACPI_GET_BITS (dword, 31, ACPI_1BIT_MASK)
 221 #define ACPI_PLD_SET_BAY(dword,value)           ACPI_SET_BITS (dword, 31, ACPI_1BIT_MASK, value)    /* Offset 64+31=95, Len 1 */
 222
 223 /* Fourth 32-bit dword, bits 96:127 */
 224
 225 #define ACPI_PLD_GET_EJECTABLE(dword)           ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
 226 #define ACPI_PLD_SET_EJECTABLE(dword,value)     ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value)     /* Offset 96+0=96, Len 1 */
 227
 228 #define ACPI_PLD_GET_OSPM_EJECT(dword)          ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
 229 #define ACPI_PLD_SET_OSPM_EJECT(dword,value)    ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value)     /* Offset 96+1=97, Len 1 */
 230
 231 #define ACPI_PLD_GET_CABINET(dword)             ACPI_GET_BITS (dword, 2, ACPI_8BIT_MASK)
 232 #define ACPI_PLD_SET_CABINET(dword,value)       ACPI_SET_BITS (dword, 2, ACPI_8BIT_MASK, value)     /* Offset 96+2=98, Len 8 */
 233
 234 #define ACPI_PLD_GET_CARD_CAGE(dword)           ACPI_GET_BITS (dword, 10, ACPI_8BIT_MASK)
 235 #define ACPI_PLD_SET_CARD_CAGE(dword,value)     ACPI_SET_BITS (dword, 10, ACPI_8BIT_MASK, value)    /* Offset 96+10=106, Len 8 */
 236
 237 #define ACPI_PLD_GET_REFERENCE(dword)           ACPI_GET_BITS (dword, 18, ACPI_1BIT_MASK)
 238 #define ACPI_PLD_SET_REFERENCE(dword,value)     ACPI_SET_BITS (dword, 18, ACPI_1BIT_MASK, value)    /* Offset 96+18=114, Len 1 */
 239
 240 #define ACPI_PLD_GET_ROTATION(dword)            ACPI_GET_BITS (dword, 19, ACPI_4BIT_MASK)
 241 #define ACPI_PLD_SET_ROTATION(dword,value)      ACPI_SET_BITS (dword, 19, ACPI_4BIT_MASK, value)    /* Offset 96+19=115, Len 4 */
 242
 243 #define ACPI_PLD_GET_ORDER(dword)               ACPI_GET_BITS (dword, 23, ACPI_5BIT_MASK)
 244 #define ACPI_PLD_SET_ORDER(dword,value)         ACPI_SET_BITS (dword, 23, ACPI_5BIT_MASK, value)    /* Offset 96+23=119, Len 5 */
 245
 246 /* Fifth 32-bit dword, bits 128:159 (Revision 2 of _PLD only) */
 247
 248 #define ACPI_PLD_GET_VERT_OFFSET(dword)         ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
 249 #define ACPI_PLD_SET_VERT_OFFSET(dword,value)   ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value)    /* Offset 128+0=128, Len 16 */
 250
 251 #define ACPI_PLD_GET_HORIZ_OFFSET(dword)        ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
 252 #define ACPI_PLD_SET_HORIZ_OFFSET(dword,value)  ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value)   /* Offset 128+16=144, Len 16 */
 253
 254
 255 #endif /* ACBUFFER_H */