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aslopcodes.c revision 1.7
      1  1.1    jruoho /******************************************************************************
      2  1.1    jruoho  *
      3  1.1    jruoho  * Module Name: aslopcode - AML opcode generation
      4  1.1    jruoho  *
      5  1.1    jruoho  *****************************************************************************/
      6  1.1    jruoho 
      7  1.2  christos /*
      8  1.7  christos  * Copyright (C) 2000 - 2017, Intel Corp.
      9  1.1    jruoho  * All rights reserved.
     10  1.1    jruoho  *
     11  1.2  christos  * Redistribution and use in source and binary forms, with or without
     12  1.2  christos  * modification, are permitted provided that the following conditions
     13  1.2  christos  * are met:
     14  1.2  christos  * 1. Redistributions of source code must retain the above copyright
     15  1.2  christos  *    notice, this list of conditions, and the following disclaimer,
     16  1.2  christos  *    without modification.
     17  1.2  christos  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     18  1.2  christos  *    substantially similar to the "NO WARRANTY" disclaimer below
     19  1.2  christos  *    ("Disclaimer") and any redistribution must be conditioned upon
     20  1.2  christos  *    including a substantially similar Disclaimer requirement for further
     21  1.2  christos  *    binary redistribution.
     22  1.2  christos  * 3. Neither the names of the above-listed copyright holders nor the names
     23  1.2  christos  *    of any contributors may be used to endorse or promote products derived
     24  1.2  christos  *    from this software without specific prior written permission.
     25  1.2  christos  *
     26  1.2  christos  * Alternatively, this software may be distributed under the terms of the
     27  1.2  christos  * GNU General Public License ("GPL") version 2 as published by the Free
     28  1.2  christos  * Software Foundation.
     29  1.2  christos  *
     30  1.2  christos  * NO WARRANTY
     31  1.2  christos  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     32  1.2  christos  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     33  1.2  christos  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
     34  1.2  christos  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     35  1.2  christos  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     36  1.2  christos  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     37  1.2  christos  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     38  1.2  christos  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     39  1.2  christos  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     40  1.2  christos  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     41  1.2  christos  * POSSIBILITY OF SUCH DAMAGES.
     42  1.2  christos  */
     43  1.1    jruoho 
     44  1.1    jruoho #include "aslcompiler.h"
     45  1.1    jruoho #include "aslcompiler.y.h"
     46  1.1    jruoho #include "amlcode.h"
     47  1.1    jruoho 
     48  1.1    jruoho #define _COMPONENT          ACPI_COMPILER
     49  1.1    jruoho         ACPI_MODULE_NAME    ("aslopcodes")
     50  1.1    jruoho 
     51  1.1    jruoho 
     52  1.1    jruoho /* Local prototypes */
     53  1.1    jruoho 
     54  1.1    jruoho static void
     55  1.1    jruoho OpcDoAccessAs (
     56  1.1    jruoho     ACPI_PARSE_OBJECT       *Op);
     57  1.1    jruoho 
     58  1.1    jruoho static void
     59  1.2  christos OpcDoConnection (
     60  1.2  christos     ACPI_PARSE_OBJECT       *Op);
     61  1.2  christos 
     62  1.2  christos static void
     63  1.1    jruoho OpcDoUnicode (
     64  1.1    jruoho     ACPI_PARSE_OBJECT       *Op);
     65  1.1    jruoho 
     66  1.1    jruoho static void
     67  1.1    jruoho OpcDoEisaId (
     68  1.1    jruoho     ACPI_PARSE_OBJECT       *Op);
     69  1.1    jruoho 
     70  1.1    jruoho static void
     71  1.1    jruoho OpcDoUuId (
     72  1.1    jruoho     ACPI_PARSE_OBJECT       *Op);
     73  1.1    jruoho 
     74  1.1    jruoho 
     75  1.1    jruoho /*******************************************************************************
     76  1.1    jruoho  *
     77  1.1    jruoho  * FUNCTION:    OpcAmlOpcodeUpdateWalk
     78  1.1    jruoho  *
     79  1.1    jruoho  * PARAMETERS:  ASL_WALK_CALLBACK
     80  1.1    jruoho  *
     81  1.1    jruoho  * RETURN:      Status
     82  1.1    jruoho  *
     83  1.1    jruoho  * DESCRIPTION: Opcode update walk, ascending callback
     84  1.1    jruoho  *
     85  1.1    jruoho  ******************************************************************************/
     86  1.1    jruoho 
     87  1.1    jruoho ACPI_STATUS
     88  1.1    jruoho OpcAmlOpcodeUpdateWalk (
     89  1.1    jruoho     ACPI_PARSE_OBJECT       *Op,
     90  1.1    jruoho     UINT32                  Level,
     91  1.1    jruoho     void                    *Context)
     92  1.1    jruoho {
     93  1.1    jruoho 
     94  1.1    jruoho     /*
     95  1.1    jruoho      * Handle the Package() case where the actual opcode cannot be determined
     96  1.1    jruoho      * until the PackageLength operand has been folded and minimized.
     97  1.1    jruoho      * (PackageOp versus VarPackageOp)
     98  1.1    jruoho      *
     99  1.1    jruoho      * This is (as of ACPI 3.0) the only case where the AML opcode can change
    100  1.1    jruoho      * based upon the value of a parameter.
    101  1.1    jruoho      *
    102  1.1    jruoho      * The parser always inserts a VarPackage opcode, which can possibly be
    103  1.1    jruoho      * optimized to a Package opcode.
    104  1.1    jruoho      */
    105  1.1    jruoho     if (Op->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE)
    106  1.1    jruoho     {
    107  1.1    jruoho         OpnDoPackage (Op);
    108  1.1    jruoho     }
    109  1.1    jruoho 
    110  1.1    jruoho     return (AE_OK);
    111  1.1    jruoho }
    112  1.1    jruoho 
    113  1.1    jruoho 
    114  1.1    jruoho /*******************************************************************************
    115  1.1    jruoho  *
    116  1.1    jruoho  * FUNCTION:    OpcAmlOpcodeWalk
    117  1.1    jruoho  *
    118  1.1    jruoho  * PARAMETERS:  ASL_WALK_CALLBACK
    119  1.1    jruoho  *
    120  1.1    jruoho  * RETURN:      Status
    121  1.1    jruoho  *
    122  1.1    jruoho  * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML
    123  1.1    jruoho  *              operands.
    124  1.1    jruoho  *
    125  1.1    jruoho  ******************************************************************************/
    126  1.1    jruoho 
    127  1.1    jruoho ACPI_STATUS
    128  1.1    jruoho OpcAmlOpcodeWalk (
    129  1.1    jruoho     ACPI_PARSE_OBJECT       *Op,
    130  1.1    jruoho     UINT32                  Level,
    131  1.1    jruoho     void                    *Context)
    132  1.1    jruoho {
    133  1.1    jruoho 
    134  1.1    jruoho     TotalParseNodes++;
    135  1.1    jruoho 
    136  1.1    jruoho     OpcGenerateAmlOpcode (Op);
    137  1.1    jruoho     OpnGenerateAmlOperands (Op);
    138  1.1    jruoho     return (AE_OK);
    139  1.1    jruoho }
    140  1.1    jruoho 
    141  1.1    jruoho 
    142  1.1    jruoho /*******************************************************************************
    143  1.1    jruoho  *
    144  1.1    jruoho  * FUNCTION:    OpcGetIntegerWidth
    145  1.1    jruoho  *
    146  1.1    jruoho  * PARAMETERS:  Op          - DEFINITION BLOCK op
    147  1.1    jruoho  *
    148  1.1    jruoho  * RETURN:      none
    149  1.1    jruoho  *
    150  1.1    jruoho  * DESCRIPTION: Extract integer width from the table revision
    151  1.1    jruoho  *
    152  1.1    jruoho  ******************************************************************************/
    153  1.1    jruoho 
    154  1.1    jruoho void
    155  1.1    jruoho OpcGetIntegerWidth (
    156  1.1    jruoho     ACPI_PARSE_OBJECT       *Op)
    157  1.1    jruoho {
    158  1.1    jruoho     ACPI_PARSE_OBJECT       *Child;
    159  1.1    jruoho 
    160  1.1    jruoho 
    161  1.1    jruoho     if (!Op)
    162  1.1    jruoho     {
    163  1.1    jruoho         return;
    164  1.1    jruoho     }
    165  1.1    jruoho 
    166  1.1    jruoho     if (Gbl_RevisionOverride)
    167  1.1    jruoho     {
    168  1.1    jruoho         AcpiUtSetIntegerWidth (Gbl_RevisionOverride);
    169  1.1    jruoho     }
    170  1.1    jruoho     else
    171  1.1    jruoho     {
    172  1.1    jruoho         Child = Op->Asl.Child;
    173  1.1    jruoho         Child = Child->Asl.Next;
    174  1.1    jruoho         Child = Child->Asl.Next;
    175  1.1    jruoho 
    176  1.1    jruoho         /* Use the revision to set the integer width */
    177  1.1    jruoho 
    178  1.1    jruoho         AcpiUtSetIntegerWidth ((UINT8) Child->Asl.Value.Integer);
    179  1.1    jruoho     }
    180  1.1    jruoho }
    181  1.1    jruoho 
    182  1.1    jruoho 
    183  1.1    jruoho /*******************************************************************************
    184  1.1    jruoho  *
    185  1.1    jruoho  * FUNCTION:    OpcSetOptimalIntegerSize
    186  1.1    jruoho  *
    187  1.1    jruoho  * PARAMETERS:  Op        - A parse tree node
    188  1.1    jruoho  *
    189  1.2  christos  * RETURN:      Integer width, in bytes. Also sets the node AML opcode to the
    190  1.1    jruoho  *              optimal integer AML prefix opcode.
    191  1.1    jruoho  *
    192  1.2  christos  * DESCRIPTION: Determine the optimal AML encoding of an integer. All leading
    193  1.1    jruoho  *              zeros can be truncated to squeeze the integer into the
    194  1.1    jruoho  *              minimal number of AML bytes.
    195  1.1    jruoho  *
    196  1.1    jruoho  ******************************************************************************/
    197  1.1    jruoho 
    198  1.1    jruoho UINT32
    199  1.1    jruoho OpcSetOptimalIntegerSize (
    200  1.1    jruoho     ACPI_PARSE_OBJECT       *Op)
    201  1.1    jruoho {
    202  1.1    jruoho 
    203  1.1    jruoho #if 0
    204  1.1    jruoho     /*
    205  1.1    jruoho      * TBD: - we don't want to optimize integers in the block header, but the
    206  1.1    jruoho      * code below does not work correctly.
    207  1.1    jruoho      */
    208  1.1    jruoho     if (Op->Asl.Parent &&
    209  1.1    jruoho         Op->Asl.Parent->Asl.Parent &&
    210  1.5  christos        (Op->Asl.Parent->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK))
    211  1.1    jruoho     {
    212  1.2  christos         return (0);
    213  1.1    jruoho     }
    214  1.1    jruoho #endif
    215  1.1    jruoho 
    216  1.1    jruoho     /*
    217  1.1    jruoho      * Check for the special AML integers first - Zero, One, Ones.
    218  1.1    jruoho      * These are single-byte opcodes that are the smallest possible
    219  1.1    jruoho      * representation of an integer.
    220  1.1    jruoho      *
    221  1.1    jruoho      * This optimization is optional.
    222  1.1    jruoho      */
    223  1.1    jruoho     if (Gbl_IntegerOptimizationFlag)
    224  1.1    jruoho     {
    225  1.1    jruoho         switch (Op->Asl.Value.Integer)
    226  1.1    jruoho         {
    227  1.1    jruoho         case 0:
    228  1.1    jruoho 
    229  1.1    jruoho             Op->Asl.AmlOpcode = AML_ZERO_OP;
    230  1.1    jruoho             AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
    231  1.1    jruoho                 Op, "Zero");
    232  1.2  christos             return (1);
    233  1.1    jruoho 
    234  1.1    jruoho         case 1:
    235  1.1    jruoho 
    236  1.1    jruoho             Op->Asl.AmlOpcode = AML_ONE_OP;
    237  1.1    jruoho             AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
    238  1.1    jruoho                 Op, "One");
    239  1.2  christos             return (1);
    240  1.1    jruoho 
    241  1.1    jruoho         case ACPI_UINT32_MAX:
    242  1.1    jruoho 
    243  1.1    jruoho             /* Check for table integer width (32 or 64) */
    244  1.1    jruoho 
    245  1.1    jruoho             if (AcpiGbl_IntegerByteWidth == 4)
    246  1.1    jruoho             {
    247  1.1    jruoho                 Op->Asl.AmlOpcode = AML_ONES_OP;
    248  1.1    jruoho                 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
    249  1.1    jruoho                     Op, "Ones");
    250  1.2  christos                 return (1);
    251  1.1    jruoho             }
    252  1.1    jruoho             break;
    253  1.1    jruoho 
    254  1.1    jruoho         case ACPI_UINT64_MAX:
    255  1.1    jruoho 
    256  1.1    jruoho             /* Check for table integer width (32 or 64) */
    257  1.1    jruoho 
    258  1.1    jruoho             if (AcpiGbl_IntegerByteWidth == 8)
    259  1.1    jruoho             {
    260  1.1    jruoho                 Op->Asl.AmlOpcode = AML_ONES_OP;
    261  1.1    jruoho                 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
    262  1.1    jruoho                     Op, "Ones");
    263  1.2  christos                 return (1);
    264  1.1    jruoho             }
    265  1.1    jruoho             break;
    266  1.1    jruoho 
    267  1.1    jruoho         default:
    268  1.2  christos 
    269  1.1    jruoho             break;
    270  1.1    jruoho         }
    271  1.1    jruoho     }
    272  1.1    jruoho 
    273  1.1    jruoho     /* Find the best fit using the various AML integer prefixes */
    274  1.1    jruoho 
    275  1.1    jruoho     if (Op->Asl.Value.Integer <= ACPI_UINT8_MAX)
    276  1.1    jruoho     {
    277  1.1    jruoho         Op->Asl.AmlOpcode = AML_BYTE_OP;
    278  1.2  christos         return (1);
    279  1.1    jruoho     }
    280  1.5  christos 
    281  1.1    jruoho     if (Op->Asl.Value.Integer <= ACPI_UINT16_MAX)
    282  1.1    jruoho     {
    283  1.1    jruoho         Op->Asl.AmlOpcode = AML_WORD_OP;
    284  1.2  christos         return (2);
    285  1.1    jruoho     }
    286  1.5  christos 
    287  1.1    jruoho     if (Op->Asl.Value.Integer <= ACPI_UINT32_MAX)
    288  1.1    jruoho     {
    289  1.1    jruoho         Op->Asl.AmlOpcode = AML_DWORD_OP;
    290  1.2  christos         return (4);
    291  1.1    jruoho     }
    292  1.7  christos     else /* 64-bit integer */
    293  1.1    jruoho     {
    294  1.1    jruoho         if (AcpiGbl_IntegerByteWidth == 4)
    295  1.1    jruoho         {
    296  1.1    jruoho             AslError (ASL_WARNING, ASL_MSG_INTEGER_LENGTH,
    297  1.1    jruoho                 Op, NULL);
    298  1.1    jruoho 
    299  1.1    jruoho             if (!Gbl_IgnoreErrors)
    300  1.1    jruoho             {
    301  1.1    jruoho                 /* Truncate the integer to 32-bit */
    302  1.7  christos 
    303  1.7  christos                 Op->Asl.Value.Integer &= ACPI_UINT32_MAX;
    304  1.7  christos 
    305  1.7  christos                 /* Now set the optimal integer size */
    306  1.7  christos 
    307  1.7  christos                 return (OpcSetOptimalIntegerSize (Op));
    308  1.1    jruoho             }
    309  1.1    jruoho         }
    310  1.1    jruoho 
    311  1.1    jruoho         Op->Asl.AmlOpcode = AML_QWORD_OP;
    312  1.2  christos         return (8);
    313  1.1    jruoho     }
    314  1.1    jruoho }
    315  1.1    jruoho 
    316  1.1    jruoho 
    317  1.1    jruoho /*******************************************************************************
    318  1.1    jruoho  *
    319  1.1    jruoho  * FUNCTION:    OpcDoAccessAs
    320  1.1    jruoho  *
    321  1.1    jruoho  * PARAMETERS:  Op        - Parse node
    322  1.1    jruoho  *
    323  1.1    jruoho  * RETURN:      None
    324  1.1    jruoho  *
    325  1.1    jruoho  * DESCRIPTION: Implement the ACCESS_AS ASL keyword.
    326  1.1    jruoho  *
    327  1.1    jruoho  ******************************************************************************/
    328  1.1    jruoho 
    329  1.1    jruoho static void
    330  1.1    jruoho OpcDoAccessAs (
    331  1.1    jruoho     ACPI_PARSE_OBJECT       *Op)
    332  1.1    jruoho {
    333  1.2  christos     ACPI_PARSE_OBJECT       *TypeOp;
    334  1.2  christos     ACPI_PARSE_OBJECT       *AttribOp;
    335  1.2  christos     ACPI_PARSE_OBJECT       *LengthOp;
    336  1.2  christos     UINT8                   Attribute;
    337  1.1    jruoho 
    338  1.1    jruoho 
    339  1.1    jruoho     Op->Asl.AmlOpcodeLength = 1;
    340  1.2  christos     TypeOp = Op->Asl.Child;
    341  1.1    jruoho 
    342  1.1    jruoho     /* First child is the access type */
    343  1.1    jruoho 
    344  1.2  christos     TypeOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
    345  1.2  christos     TypeOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
    346  1.1    jruoho 
    347  1.1    jruoho     /* Second child is the optional access attribute */
    348  1.1    jruoho 
    349  1.2  christos     AttribOp = TypeOp->Asl.Next;
    350  1.2  christos     if (AttribOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
    351  1.2  christos     {
    352  1.2  christos         AttribOp->Asl.Value.Integer = 0;
    353  1.2  christos     }
    354  1.5  christos 
    355  1.2  christos     AttribOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
    356  1.2  christos     AttribOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
    357  1.2  christos 
    358  1.2  christos     /* Only a few AccessAttributes support AccessLength */
    359  1.2  christos 
    360  1.2  christos     Attribute = (UINT8) AttribOp->Asl.Value.Integer;
    361  1.2  christos     if ((Attribute != AML_FIELD_ATTRIB_MULTIBYTE) &&
    362  1.2  christos         (Attribute != AML_FIELD_ATTRIB_RAW_BYTES) &&
    363  1.2  christos         (Attribute != AML_FIELD_ATTRIB_RAW_PROCESS))
    364  1.2  christos     {
    365  1.2  christos         return;
    366  1.2  christos     }
    367  1.2  christos 
    368  1.2  christos     Op->Asl.AmlOpcode = AML_FIELD_EXT_ACCESS_OP;
    369  1.2  christos 
    370  1.2  christos     /*
    371  1.2  christos      * Child of Attributes is the AccessLength (required for Multibyte,
    372  1.2  christos      * RawBytes, RawProcess.)
    373  1.2  christos      */
    374  1.2  christos     LengthOp = AttribOp->Asl.Child;
    375  1.2  christos     if (!LengthOp)
    376  1.2  christos     {
    377  1.2  christos         return;
    378  1.2  christos     }
    379  1.2  christos 
    380  1.2  christos     /* TBD: probably can remove */
    381  1.2  christos 
    382  1.2  christos     if (LengthOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
    383  1.2  christos     {
    384  1.2  christos         LengthOp->Asl.Value.Integer = 16;
    385  1.2  christos     }
    386  1.2  christos 
    387  1.2  christos     LengthOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
    388  1.2  christos     LengthOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
    389  1.2  christos }
    390  1.2  christos 
    391  1.2  christos 
    392  1.2  christos /*******************************************************************************
    393  1.2  christos  *
    394  1.2  christos  * FUNCTION:    OpcDoConnection
    395  1.2  christos  *
    396  1.2  christos  * PARAMETERS:  Op        - Parse node
    397  1.2  christos  *
    398  1.2  christos  * RETURN:      None
    399  1.2  christos  *
    400  1.2  christos  * DESCRIPTION: Implement the Connection ASL keyword.
    401  1.2  christos  *
    402  1.2  christos  ******************************************************************************/
    403  1.2  christos 
    404  1.2  christos static void
    405  1.2  christos OpcDoConnection (
    406  1.2  christos     ACPI_PARSE_OBJECT       *Op)
    407  1.2  christos {
    408  1.2  christos     ASL_RESOURCE_NODE       *Rnode;
    409  1.2  christos     ACPI_PARSE_OBJECT       *BufferOp;
    410  1.2  christos     ACPI_PARSE_OBJECT       *BufferLengthOp;
    411  1.2  christos     ACPI_PARSE_OBJECT       *BufferDataOp;
    412  1.2  christos     ASL_RESOURCE_INFO       Info;
    413  1.2  christos     UINT8                   State;
    414  1.2  christos 
    415  1.2  christos 
    416  1.2  christos     Op->Asl.AmlOpcodeLength = 1;
    417  1.2  christos 
    418  1.2  christos     if (Op->Asl.Child->Asl.AmlOpcode == AML_INT_NAMEPATH_OP)
    419  1.2  christos     {
    420  1.2  christos         return;
    421  1.2  christos     }
    422  1.2  christos 
    423  1.2  christos     BufferOp = Op->Asl.Child;
    424  1.2  christos     BufferLengthOp = BufferOp->Asl.Child;
    425  1.2  christos     BufferDataOp = BufferLengthOp->Asl.Next;
    426  1.2  christos 
    427  1.2  christos     Info.DescriptorTypeOp = BufferDataOp->Asl.Next;
    428  1.2  christos     Info.CurrentByteOffset = 0;
    429  1.2  christos     State = ACPI_RSTATE_NORMAL;
    430  1.2  christos     Rnode = RsDoOneResourceDescriptor (&Info, &State);
    431  1.2  christos     if (!Rnode)
    432  1.1    jruoho     {
    433  1.2  christos         return; /* error */
    434  1.1    jruoho     }
    435  1.2  christos 
    436  1.2  christos     /*
    437  1.2  christos      * Transform the nodes into the following
    438  1.2  christos      *
    439  1.2  christos      * Op           -> AML_BUFFER_OP
    440  1.2  christos      * First Child  -> BufferLength
    441  1.2  christos      * Second Child -> Descriptor Buffer (raw byte data)
    442  1.2  christos      */
    443  1.5  christos     BufferOp->Asl.ParseOpcode = PARSEOP_BUFFER;
    444  1.5  christos     BufferOp->Asl.AmlOpcode = AML_BUFFER_OP;
    445  1.5  christos     BufferOp->Asl.CompileFlags = NODE_AML_PACKAGE | NODE_IS_RESOURCE_DESC;
    446  1.2  christos     UtSetParseOpName (BufferOp);
    447  1.2  christos 
    448  1.5  christos     BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER;
    449  1.2  christos     BufferLengthOp->Asl.Value.Integer = Rnode->BufferLength;
    450  1.2  christos     (void) OpcSetOptimalIntegerSize (BufferLengthOp);
    451  1.2  christos     UtSetParseOpName (BufferLengthOp);
    452  1.2  christos 
    453  1.5  christos     BufferDataOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
    454  1.5  christos     BufferDataOp->Asl.AmlOpcode = AML_RAW_DATA_CHAIN;
    455  1.5  christos     BufferDataOp->Asl.AmlOpcodeLength = 0;
    456  1.5  christos     BufferDataOp->Asl.AmlLength = Rnode->BufferLength;
    457  1.5  christos     BufferDataOp->Asl.Value.Buffer = (UINT8 *) Rnode;
    458  1.2  christos     UtSetParseOpName (BufferDataOp);
    459  1.1    jruoho }
    460  1.1    jruoho 
    461  1.1    jruoho 
    462  1.1    jruoho /*******************************************************************************
    463  1.1    jruoho  *
    464  1.1    jruoho  * FUNCTION:    OpcDoUnicode
    465  1.1    jruoho  *
    466  1.1    jruoho  * PARAMETERS:  Op        - Parse node
    467  1.1    jruoho  *
    468  1.1    jruoho  * RETURN:      None
    469  1.1    jruoho  *
    470  1.1    jruoho  * DESCRIPTION: Implement the UNICODE ASL "macro".  Convert the input string
    471  1.2  christos  *              to a unicode buffer. There is no Unicode AML opcode.
    472  1.1    jruoho  *
    473  1.1    jruoho  * Note:  The Unicode string is 16 bits per character, no leading signature,
    474  1.1    jruoho  *        with a 16-bit terminating NULL.
    475  1.1    jruoho  *
    476  1.1    jruoho  ******************************************************************************/
    477  1.1    jruoho 
    478  1.1    jruoho static void
    479  1.1    jruoho OpcDoUnicode (
    480  1.1    jruoho     ACPI_PARSE_OBJECT       *Op)
    481  1.1    jruoho {
    482  1.1    jruoho     ACPI_PARSE_OBJECT       *InitializerOp;
    483  1.1    jruoho     UINT32                  Length;
    484  1.1    jruoho     UINT32                  Count;
    485  1.1    jruoho     UINT32                  i;
    486  1.1    jruoho     UINT8                   *AsciiString;
    487  1.1    jruoho     UINT16                  *UnicodeString;
    488  1.1    jruoho     ACPI_PARSE_OBJECT       *BufferLengthOp;
    489  1.1    jruoho 
    490  1.1    jruoho 
    491  1.1    jruoho     /* Change op into a buffer object */
    492  1.1    jruoho 
    493  1.1    jruoho     Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST;
    494  1.1    jruoho     Op->Asl.ParseOpcode = PARSEOP_BUFFER;
    495  1.1    jruoho     UtSetParseOpName (Op);
    496  1.1    jruoho 
    497  1.1    jruoho     /* Buffer Length is first, followed by the string */
    498  1.1    jruoho 
    499  1.1    jruoho     BufferLengthOp = Op->Asl.Child;
    500  1.1    jruoho     InitializerOp = BufferLengthOp->Asl.Next;
    501  1.1    jruoho 
    502  1.1    jruoho     AsciiString = (UINT8 *) InitializerOp->Asl.Value.String;
    503  1.1    jruoho 
    504  1.1    jruoho     /* Create a new buffer for the Unicode string */
    505  1.1    jruoho 
    506  1.1    jruoho     Count = strlen (InitializerOp->Asl.Value.String) + 1;
    507  1.1    jruoho     Length = Count * sizeof (UINT16);
    508  1.1    jruoho     UnicodeString = UtLocalCalloc (Length);
    509  1.1    jruoho 
    510  1.1    jruoho     /* Convert to Unicode string (including null terminator) */
    511  1.1    jruoho 
    512  1.1    jruoho     for (i = 0; i < Count; i++)
    513  1.1    jruoho     {
    514  1.1    jruoho         UnicodeString[i] = (UINT16) AsciiString[i];
    515  1.1    jruoho     }
    516  1.1    jruoho 
    517  1.1    jruoho     /*
    518  1.1    jruoho      * Just set the buffer size node to be the buffer length, regardless
    519  1.1    jruoho      * of whether it was previously an integer or a default_arg placeholder
    520  1.1    jruoho      */
    521  1.5  christos     BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER;
    522  1.5  christos     BufferLengthOp->Asl.AmlOpcode = AML_DWORD_OP;
    523  1.1    jruoho     BufferLengthOp->Asl.Value.Integer = Length;
    524  1.1    jruoho     UtSetParseOpName (BufferLengthOp);
    525  1.1    jruoho 
    526  1.1    jruoho     (void) OpcSetOptimalIntegerSize (BufferLengthOp);
    527  1.1    jruoho 
    528  1.1    jruoho     /* The Unicode string is a raw data buffer */
    529  1.1    jruoho 
    530  1.5  christos     InitializerOp->Asl.Value.Buffer = (UINT8 *) UnicodeString;
    531  1.5  christos     InitializerOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER;
    532  1.5  christos     InitializerOp->Asl.AmlLength = Length;
    533  1.5  christos     InitializerOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
    534  1.5  christos     InitializerOp->Asl.Child = NULL;
    535  1.1    jruoho     UtSetParseOpName (InitializerOp);
    536  1.1    jruoho }
    537  1.1    jruoho 
    538  1.1    jruoho 
    539  1.1    jruoho /*******************************************************************************
    540  1.1    jruoho  *
    541  1.1    jruoho  * FUNCTION:    OpcDoEisaId
    542  1.1    jruoho  *
    543  1.1    jruoho  * PARAMETERS:  Op        - Parse node
    544  1.1    jruoho  *
    545  1.1    jruoho  * RETURN:      None
    546  1.1    jruoho  *
    547  1.2  christos  * DESCRIPTION: Convert a string EISA ID to numeric representation. See the
    548  1.2  christos  *              Pnp BIOS Specification for details. Here is an excerpt:
    549  1.1    jruoho  *
    550  1.1    jruoho  *              A seven character ASCII representation of the product
    551  1.2  christos  *              identifier compressed into a 32-bit identifier. The seven
    552  1.1    jruoho  *              character ID consists of a three character manufacturer code,
    553  1.1    jruoho  *              a three character hexadecimal product identifier, and a one
    554  1.2  christos  *              character hexadecimal revision number. The manufacturer code
    555  1.1    jruoho  *              is a 3 uppercase character code that is compressed into 3 5-bit
    556  1.1    jruoho  *              values as follows:
    557  1.1    jruoho  *                  1) Find hex ASCII value for each letter
    558  1.1    jruoho  *                  2) Subtract 40h from each ASCII value
    559  1.2  christos  *                  3) Retain 5 least significant bits for each letter by
    560  1.1    jruoho  *                     discarding upper 3 bits because they are always 0.
    561  1.1    jruoho  *                  4) Compressed code = concatenate 0 and the 3 5-bit values
    562  1.1    jruoho  *
    563  1.1    jruoho  *              The format of the compressed product identifier is as follows:
    564  1.1    jruoho  *              Byte 0: Bit 7       - Reserved (0)
    565  1.1    jruoho  *                      Bits 6-2:   - 1st character of compressed mfg code
    566  1.1    jruoho  *                      Bits 1-0    - Upper 2 bits of 2nd character of mfg code
    567  1.1    jruoho  *              Byte 1: Bits 7-5    - Lower 3 bits of 2nd character of mfg code
    568  1.1    jruoho  *                      Bits 4-0    - 3rd character of mfg code
    569  1.1    jruoho  *              Byte 2: Bits 7-4    - 1st hex digit of product number
    570  1.1    jruoho  *                      Bits 3-0    - 2nd hex digit of product number
    571  1.1    jruoho  *              Byte 3: Bits 7-4    - 3st hex digit of product number
    572  1.1    jruoho  *                      Bits 3-0    - Hex digit of the revision number
    573  1.1    jruoho  *
    574  1.1    jruoho  ******************************************************************************/
    575  1.1    jruoho 
    576  1.1    jruoho static void
    577  1.1    jruoho OpcDoEisaId (
    578  1.1    jruoho     ACPI_PARSE_OBJECT       *Op)
    579  1.1    jruoho {
    580  1.1    jruoho     UINT32                  EisaId = 0;
    581  1.1    jruoho     UINT32                  BigEndianId;
    582  1.1    jruoho     char                    *InString;
    583  1.1    jruoho     ACPI_STATUS             Status = AE_OK;
    584  1.1    jruoho     UINT32                  i;
    585  1.1    jruoho 
    586  1.1    jruoho 
    587  1.1    jruoho     InString = (char *) Op->Asl.Value.String;
    588  1.1    jruoho 
    589  1.1    jruoho     /*
    590  1.1    jruoho      * The EISAID string must be exactly 7 characters and of the form
    591  1.1    jruoho      * "UUUXXXX" -- 3 uppercase letters and 4 hex digits (e.g., "PNP0001")
    592  1.1    jruoho      */
    593  1.3  christos     if (strlen (InString) != 7)
    594  1.1    jruoho     {
    595  1.1    jruoho         Status = AE_BAD_PARAMETER;
    596  1.1    jruoho     }
    597  1.1    jruoho     else
    598  1.1    jruoho     {
    599  1.1    jruoho         /* Check all 7 characters for correct format */
    600  1.1    jruoho 
    601  1.1    jruoho         for (i = 0; i < 7; i++)
    602  1.1    jruoho         {
    603  1.1    jruoho             /* First 3 characters must be uppercase letters */
    604  1.1    jruoho 
    605  1.1    jruoho             if (i < 3)
    606  1.1    jruoho             {
    607  1.1    jruoho                 if (!isupper ((int) InString[i]))
    608  1.1    jruoho                 {
    609  1.1    jruoho                     Status = AE_BAD_PARAMETER;
    610  1.1    jruoho                 }
    611  1.1    jruoho             }
    612  1.1    jruoho 
    613  1.1    jruoho             /* Last 4 characters must be hex digits */
    614  1.1    jruoho 
    615  1.1    jruoho             else if (!isxdigit ((int) InString[i]))
    616  1.1    jruoho             {
    617  1.1    jruoho                 Status = AE_BAD_PARAMETER;
    618  1.1    jruoho             }
    619  1.1    jruoho         }
    620  1.1    jruoho     }
    621  1.1    jruoho 
    622  1.1    jruoho     if (ACPI_FAILURE (Status))
    623  1.1    jruoho     {
    624  1.1    jruoho         AslError (ASL_ERROR, ASL_MSG_INVALID_EISAID, Op, Op->Asl.Value.String);
    625  1.1    jruoho     }
    626  1.1    jruoho     else
    627  1.1    jruoho     {
    628  1.1    jruoho         /* Create ID big-endian first (bits are contiguous) */
    629  1.1    jruoho 
    630  1.1    jruoho         BigEndianId =
    631  1.2  christos             (UINT32) ((UINT8) (InString[0] - 0x40)) << 26 |
    632  1.2  christos             (UINT32) ((UINT8) (InString[1] - 0x40)) << 21 |
    633  1.2  christos             (UINT32) ((UINT8) (InString[2] - 0x40)) << 16 |
    634  1.2  christos 
    635  1.2  christos             (AcpiUtAsciiCharToHex (InString[3])) << 12 |
    636  1.2  christos             (AcpiUtAsciiCharToHex (InString[4])) << 8  |
    637  1.2  christos             (AcpiUtAsciiCharToHex (InString[5])) << 4  |
    638  1.2  christos              AcpiUtAsciiCharToHex (InString[6]);
    639  1.1    jruoho 
    640  1.1    jruoho         /* Swap to little-endian to get final ID (see function header) */
    641  1.1    jruoho 
    642  1.1    jruoho         EisaId = AcpiUtDwordByteSwap (BigEndianId);
    643  1.1    jruoho     }
    644  1.1    jruoho 
    645  1.1    jruoho     /*
    646  1.1    jruoho      * Morph the Op into an integer, regardless of whether there
    647  1.1    jruoho      * was an error in the EISAID string
    648  1.1    jruoho      */
    649  1.1    jruoho     Op->Asl.Value.Integer = EisaId;
    650  1.1    jruoho 
    651  1.1    jruoho     Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST;
    652  1.1    jruoho     Op->Asl.ParseOpcode = PARSEOP_INTEGER;
    653  1.1    jruoho     (void) OpcSetOptimalIntegerSize (Op);
    654  1.1    jruoho 
    655  1.1    jruoho     /* Op is now an integer */
    656  1.1    jruoho 
    657  1.1    jruoho     UtSetParseOpName (Op);
    658  1.1    jruoho }
    659  1.1    jruoho 
    660  1.1    jruoho 
    661  1.1    jruoho /*******************************************************************************
    662  1.1    jruoho  *
    663  1.2  christos  * FUNCTION:    OpcDoUuId
    664  1.2  christos  *
    665  1.2  christos  * PARAMETERS:  Op                  - Parse node
    666  1.2  christos  *
    667  1.2  christos  * RETURN:      None
    668  1.2  christos  *
    669  1.2  christos  * DESCRIPTION: Convert UUID string to 16-byte buffer
    670  1.2  christos  *
    671  1.2  christos  ******************************************************************************/
    672  1.2  christos 
    673  1.2  christos static void
    674  1.2  christos OpcDoUuId (
    675  1.2  christos     ACPI_PARSE_OBJECT       *Op)
    676  1.2  christos {
    677  1.2  christos     char                    *InString;
    678  1.2  christos     UINT8                   *Buffer;
    679  1.2  christos     ACPI_STATUS             Status = AE_OK;
    680  1.2  christos     ACPI_PARSE_OBJECT       *NewOp;
    681  1.2  christos 
    682  1.2  christos 
    683  1.2  christos     InString = ACPI_CAST_PTR (char, Op->Asl.Value.String);
    684  1.1    jruoho     Buffer = UtLocalCalloc (16);
    685  1.1    jruoho 
    686  1.2  christos     Status = AuValidateUuid (InString);
    687  1.1    jruoho     if (ACPI_FAILURE (Status))
    688  1.1    jruoho     {
    689  1.1    jruoho         AslError (ASL_ERROR, ASL_MSG_INVALID_UUID, Op, Op->Asl.Value.String);
    690  1.1    jruoho     }
    691  1.2  christos     else
    692  1.1    jruoho     {
    693  1.2  christos         AcpiUtConvertStringToUuid (InString, Buffer);
    694  1.1    jruoho     }
    695  1.1    jruoho 
    696  1.1    jruoho     /* Change Op to a Buffer */
    697  1.1    jruoho 
    698  1.1    jruoho     Op->Asl.ParseOpcode = PARSEOP_BUFFER;
    699  1.1    jruoho     Op->Common.AmlOpcode = AML_BUFFER_OP;
    700  1.1    jruoho 
    701  1.1    jruoho     /* Disable further optimization */
    702  1.1    jruoho 
    703  1.1    jruoho     Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST;
    704  1.1    jruoho     UtSetParseOpName (Op);
    705  1.1    jruoho 
    706  1.1    jruoho     /* Child node is the buffer length */
    707  1.1    jruoho 
    708  1.1    jruoho     NewOp = TrAllocateNode (PARSEOP_INTEGER);
    709  1.1    jruoho 
    710  1.5  christos     NewOp->Asl.AmlOpcode = AML_BYTE_OP;
    711  1.1    jruoho     NewOp->Asl.Value.Integer = 16;
    712  1.5  christos     NewOp->Asl.Parent = Op;
    713  1.1    jruoho 
    714  1.1    jruoho     Op->Asl.Child = NewOp;
    715  1.1    jruoho     Op = NewOp;
    716  1.1    jruoho 
    717  1.1    jruoho     /* Peer to the child is the raw buffer data */
    718  1.1    jruoho 
    719  1.1    jruoho     NewOp = TrAllocateNode (PARSEOP_RAW_DATA);
    720  1.5  christos     NewOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER;
    721  1.5  christos     NewOp->Asl.AmlLength = 16;
    722  1.5  christos     NewOp->Asl.Value.String = ACPI_CAST_PTR (char, Buffer);
    723  1.5  christos     NewOp->Asl.Parent = Op->Asl.Parent;
    724  1.1    jruoho 
    725  1.1    jruoho     Op->Asl.Next = NewOp;
    726  1.1    jruoho }
    727  1.1    jruoho 
    728  1.1    jruoho 
    729  1.1    jruoho /*******************************************************************************
    730  1.1    jruoho  *
    731  1.1    jruoho  * FUNCTION:    OpcGenerateAmlOpcode
    732  1.1    jruoho  *
    733  1.2  christos  * PARAMETERS:  Op                  - Parse node
    734  1.1    jruoho  *
    735  1.1    jruoho  * RETURN:      None
    736  1.1    jruoho  *
    737  1.1    jruoho  * DESCRIPTION: Generate the AML opcode associated with the node and its
    738  1.2  christos  *              parse (lex/flex) keyword opcode. Essentially implements
    739  1.1    jruoho  *              a mapping between the parse opcodes and the actual AML opcodes.
    740  1.1    jruoho  *
    741  1.1    jruoho  ******************************************************************************/
    742  1.1    jruoho 
    743  1.1    jruoho void
    744  1.1    jruoho OpcGenerateAmlOpcode (
    745  1.1    jruoho     ACPI_PARSE_OBJECT       *Op)
    746  1.1    jruoho {
    747  1.1    jruoho     UINT16                  Index;
    748  1.1    jruoho 
    749  1.1    jruoho 
    750  1.1    jruoho     Index = (UINT16) (Op->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE);
    751  1.1    jruoho 
    752  1.1    jruoho     Op->Asl.AmlOpcode     = AslKeywordMapping[Index].AmlOpcode;
    753  1.1    jruoho     Op->Asl.AcpiBtype     = AslKeywordMapping[Index].AcpiBtype;
    754  1.1    jruoho     Op->Asl.CompileFlags |= AslKeywordMapping[Index].Flags;
    755  1.1    jruoho 
    756  1.1    jruoho     if (!Op->Asl.Value.Integer)
    757  1.1    jruoho     {
    758  1.1    jruoho         Op->Asl.Value.Integer = AslKeywordMapping[Index].Value;
    759  1.1    jruoho     }
    760  1.1    jruoho 
    761  1.1    jruoho     /* Special handling for some opcodes */
    762  1.1    jruoho 
    763  1.1    jruoho     switch (Op->Asl.ParseOpcode)
    764  1.1    jruoho     {
    765  1.1    jruoho     case PARSEOP_INTEGER:
    766  1.1    jruoho         /*
    767  1.1    jruoho          * Set the opcode based on the size of the integer
    768  1.1    jruoho          */
    769  1.1    jruoho         (void) OpcSetOptimalIntegerSize (Op);
    770  1.1    jruoho         break;
    771  1.1    jruoho 
    772  1.1    jruoho     case PARSEOP_OFFSET:
    773  1.1    jruoho 
    774  1.1    jruoho         Op->Asl.AmlOpcodeLength = 1;
    775  1.1    jruoho         break;
    776  1.1    jruoho 
    777  1.1    jruoho     case PARSEOP_ACCESSAS:
    778  1.1    jruoho 
    779  1.1    jruoho         OpcDoAccessAs (Op);
    780  1.1    jruoho         break;
    781  1.1    jruoho 
    782  1.2  christos     case PARSEOP_CONNECTION:
    783  1.2  christos 
    784  1.2  christos         OpcDoConnection (Op);
    785  1.2  christos         break;
    786  1.2  christos 
    787  1.1    jruoho     case PARSEOP_EISAID:
    788  1.1    jruoho 
    789  1.1    jruoho         OpcDoEisaId (Op);
    790  1.1    jruoho         break;
    791  1.1    jruoho 
    792  1.2  christos     case PARSEOP_PRINTF:
    793  1.2  christos 
    794  1.2  christos         OpcDoPrintf (Op);
    795  1.2  christos         break;
    796  1.2  christos 
    797  1.2  christos     case PARSEOP_FPRINTF:
    798  1.2  christos 
    799  1.2  christos         OpcDoFprintf (Op);
    800  1.2  christos         break;
    801  1.2  christos 
    802  1.2  christos     case PARSEOP_TOPLD:
    803  1.2  christos 
    804  1.2  christos         OpcDoPld (Op);
    805  1.2  christos         break;
    806  1.2  christos 
    807  1.1    jruoho     case PARSEOP_TOUUID:
    808  1.1    jruoho 
    809  1.1    jruoho         OpcDoUuId (Op);
    810  1.1    jruoho         break;
    811  1.1    jruoho 
    812  1.1    jruoho     case PARSEOP_UNICODE:
    813  1.1    jruoho 
    814  1.1    jruoho         OpcDoUnicode (Op);
    815  1.1    jruoho         break;
    816  1.1    jruoho 
    817  1.1    jruoho     case PARSEOP_INCLUDE:
    818  1.1    jruoho 
    819  1.1    jruoho         Gbl_HasIncludeFiles = TRUE;
    820  1.1    jruoho         break;
    821  1.1    jruoho 
    822  1.1    jruoho     case PARSEOP_EXTERNAL:
    823  1.1    jruoho 
    824  1.6  christos         if (Gbl_DoExternals == FALSE)
    825  1.6  christos         {
    826  1.6  christos             Op->Asl.Child->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
    827  1.6  christos             Op->Asl.Child->Asl.Next->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
    828  1.6  christos         }
    829  1.1    jruoho         break;
    830  1.1    jruoho 
    831  1.2  christos     case PARSEOP_TIMER:
    832  1.2  christos 
    833  1.2  christos         if (AcpiGbl_IntegerBitWidth == 32)
    834  1.2  christos         {
    835  1.2  christos             AslError (ASL_REMARK, ASL_MSG_TRUNCATION, Op, NULL);
    836  1.2  christos         }
    837  1.2  christos         break;
    838  1.2  christos 
    839  1.1    jruoho     default:
    840  1.2  christos 
    841  1.1    jruoho         /* Nothing to do for other opcodes */
    842  1.2  christos 
    843  1.1    jruoho         break;
    844  1.1    jruoho     }
    845  1.1    jruoho 
    846  1.1    jruoho     return;
    847  1.1    jruoho }
    848