Import ACPICA 20120215.vendor/acpica/20120215

1 files changed, 561 insertions, 0 deletions

diff --git a/source/compiler/dtfield.c b/source/compiler/dtfield.c
new file mode 100644
index 000000000000..4f9ab612fbc5
--- /dev/null
+++ b/source/compiler/dtfield.c
@@ -0,0 +1,561 @@
+/******************************************************************************
+ *
+ * Module Name: dtfield.c - Code generation for individual source fields
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, 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.
+ */
+
+#define __DTFIELD_C__
+
+#include "aslcompiler.h"
+#include "dtcompiler.h"
+
+#define _COMPONENT          DT_COMPILER
+        ACPI_MODULE_NAME    ("dtfield")
+
+
+/* Local prototypes */
+
+static void
+DtCompileString (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength);
+
+static void
+DtCompileUnicode (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength);
+
+static ACPI_STATUS
+DtCompileUuid (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength);
+
+static char *
+DtNormalizeBuffer (
+    char                    *Buffer,
+    UINT32                  *Count);
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtCompileOneField
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              Field               - Field to be compiled
+ *              ByteLength          - Byte length of the field
+ *              Type                - Field type
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Compile a field value to binary
+ *
+ *****************************************************************************/
+
+void
+DtCompileOneField (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength,
+    UINT8                   Type,
+    UINT8                   Flags)
+{
+    ACPI_STATUS             Status;
+
+    switch (Type)
+    {
+    case DT_FIELD_TYPE_INTEGER:
+        DtCompileInteger (Buffer, Field, ByteLength, Flags);
+        break;
+
+    case DT_FIELD_TYPE_STRING:
+        DtCompileString (Buffer, Field, ByteLength);
+        break;
+
+    case DT_FIELD_TYPE_UUID:
+        Status = DtCompileUuid (Buffer, Field, ByteLength);
+        if (ACPI_SUCCESS (Status))
+        {
+            break;
+        }
+
+        /* Fall through. */
+
+    case DT_FIELD_TYPE_BUFFER:
+        DtCompileBuffer (Buffer, Field->Value, Field, ByteLength);
+        break;
+
+    case DT_FIELD_TYPE_UNICODE:
+        DtCompileUnicode (Buffer, Field, ByteLength);
+        break;
+
+    case DT_FIELD_TYPE_DEVICE_PATH:
+        break;
+
+    default:
+        DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid field type");
+        break;
+    }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtCompileString
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              Field               - String to be copied to buffer
+ *              ByteLength          - Maximum length of string
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Copy string to the buffer
+ *
+ *****************************************************************************/
+
+static void
+DtCompileString (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength)
+{
+    UINT32                  Length;
+
+
+    Length = ACPI_STRLEN (Field->Value);
+
+    /* Check if the string is too long for the field */
+
+    if (Length > ByteLength)
+    {
+        sprintf (MsgBuffer, "Maximum %u characters", ByteLength);
+        DtError (ASL_ERROR, ASL_MSG_STRING_LENGTH, Field, MsgBuffer);
+        Length = ByteLength;
+    }
+
+    ACPI_MEMCPY (Buffer, Field->Value, Length);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtCompileUnicode
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              Field               - String to be copied to buffer
+ *              ByteLength          - Maximum length of string
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Convert ASCII string to Unicode string
+ *
+ * Note:  The Unicode string is 16 bits per character, no leading signature,
+ *        with a 16-bit terminating NULL.
+ *
+ *****************************************************************************/
+
+static void
+DtCompileUnicode (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength)
+{
+    UINT32                  Count;
+    UINT32                  i;
+    char                    *AsciiString;
+    UINT16                  *UnicodeString;
+
+
+    AsciiString = Field->Value;
+    UnicodeString = (UINT16 *) Buffer;
+    Count = ACPI_STRLEN (AsciiString) + 1;
+
+    /* Convert to Unicode string (including null terminator) */
+
+    for (i = 0; i < Count; i++)
+    {
+        UnicodeString[i] = (UINT16) AsciiString[i];
+    }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    DtCompileUuid
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              Field               - String to be copied to buffer
+ *              ByteLength          - Maximum length of string
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Convert UUID string to 16-byte buffer
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+DtCompileUuid (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength)
+{
+    char                    *InString;
+    ACPI_STATUS             Status;
+
+
+    InString = Field->Value;
+
+    Status = AuValidateUuid (InString);
+    if (ACPI_FAILURE (Status))
+    {
+        sprintf (MsgBuffer, "%s", Field->Value);
+        DtNameError (ASL_ERROR, ASL_MSG_INVALID_UUID, Field, MsgBuffer);
+    }
+    else
+    {
+        Status = AuConvertStringToUuid (InString, (char *) Buffer);
+    }
+
+    return (Status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtCompileInteger
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              Field               - Field obj with Integer to be compiled
+ *              ByteLength          - Byte length of the integer
+ *              Flags               - Additional compile info
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Compile an integer. Supports integer expressions with C-style
+ *              operators.
+ *
+ *****************************************************************************/
+
+void
+DtCompileInteger (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength,
+    UINT8                   Flags)
+{
+    UINT64                  Value;
+    UINT64                  MaxValue;
+    ACPI_STATUS             Status;
+
+
+    /* Output buffer byte length must be in range 1-8 */
+
+    if ((ByteLength > 8) || (ByteLength == 0))
+    {
+        DtFatal (ASL_MSG_COMPILER_INTERNAL, Field,
+            "Invalid internal Byte length");
+        return;
+    }
+
+    /* Resolve integer expression to a single integer value */
+
+    Status = DtResolveIntegerExpression (Field, &Value);
+    if (ACPI_FAILURE (Status))
+    {
+        return;
+    }
+
+    /* Ensure that reserved fields are set to zero */
+    /* TBD: should we set to zero, or just make this an ERROR? */
+    /* TBD: Probably better to use a flag */
+
+    if (!ACPI_STRCMP (Field->Name, "Reserved") &&
+        (Value != 0))
+    {
+        DtError (ASL_WARNING, ASL_MSG_RESERVED_VALUE, Field,
+            "Setting to zero");
+        Value = 0;
+    }
+
+    /* Check if the value must be non-zero */
+
+    if ((Value == 0) && (Flags & DT_NON_ZERO))
+    {
+        DtError (ASL_ERROR, ASL_MSG_ZERO_VALUE, Field, NULL);
+    }
+
+    /*
+     * Generate the maximum value for the data type (ByteLength)
+     * Note: construct chosen for maximum portability
+     */
+    MaxValue = ((UINT64) (-1)) >> (64 - (ByteLength * 8));
+
+    /* Validate that the input value is within range of the target */
+
+    if (Value > MaxValue)
+    {
+        sprintf (MsgBuffer, "%8.8X%8.8X", ACPI_FORMAT_UINT64 (Value));
+        DtError (ASL_ERROR, ASL_MSG_INTEGER_SIZE, Field, MsgBuffer);
+    }
+
+    ACPI_MEMCPY (Buffer, &Value, ByteLength);
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtNormalizeBuffer
+ *
+ * PARAMETERS:  Buffer              - Input buffer
+ *              Count               - Output the count of hex number in
+ *                                    the Buffer
+ *
+ * RETURN:      The normalized buffer, freed by caller
+ *
+ * DESCRIPTION: [1A,2B,3C,4D] or 1A, 2B, 3C, 4D will be normalized
+ *              to 1A 2B 3C 4D
+ *
+ *****************************************************************************/
+
+static char *
+DtNormalizeBuffer (
+    char                    *Buffer,
+    UINT32                  *Count)
+{
+    char                    *NewBuffer;
+    char                    *TmpBuffer;
+    UINT32                  BufferCount = 0;
+    BOOLEAN                 Separator = TRUE;
+    char                    c;
+
+
+    NewBuffer = UtLocalCalloc (ACPI_STRLEN (Buffer) + 1);
+    TmpBuffer = NewBuffer;
+
+    while ((c = *Buffer++))
+    {
+        switch (c)
+        {
+        /* Valid separators */
+
+        case '[':
+        case ']':
+        case ' ':
+        case ',':
+            Separator = TRUE;
+            break;
+
+        default:
+            if (Separator)
+            {
+                /* Insert blank as the standard separator */
+
+                if (NewBuffer[0])
+                {
+                    *TmpBuffer++ = ' ';
+                    BufferCount++;
+                }
+
+                Separator = FALSE;
+            }
+
+            *TmpBuffer++ = c;
+            break;
+        }
+    }
+
+    *Count = BufferCount + 1;
+    return (NewBuffer);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtCompileBuffer
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              StringValue         - Integer list to be compiled
+ *              Field               - Current field object
+ *              ByteLength          - Byte length of the integer list
+ *
+ * RETURN:      Count of remaining data in the input list
+ *
+ * DESCRIPTION: Compile and pack an integer list, for example
+ *              "AA 1F 20 3B" ==> Buffer[] = {0xAA,0x1F,0x20,0x3B}
+ *
+ *****************************************************************************/
+
+UINT32
+DtCompileBuffer (
+    UINT8                   *Buffer,
+    char                    *StringValue,
+    DT_FIELD                *Field,
+    UINT32                  ByteLength)
+{
+    ACPI_STATUS             Status;
+    char                    Hex[3];
+    UINT64                  Value;
+    UINT32                  i;
+    UINT32                  Count;
+
+
+    /* Allow several different types of value separators */
+
+    StringValue = DtNormalizeBuffer (StringValue, &Count);
+
+    Hex[2] = 0;
+    for (i = 0; i < Count; i++)
+    {
+        /* Each element of StringValue is three chars */
+
+        Hex[0] = StringValue[(3 * i)];
+        Hex[1] = StringValue[(3 * i) + 1];
+
+        /* Convert one hex byte */
+
+        Value = 0;
+        Status = DtStrtoul64 (Hex, &Value);
+        if (ACPI_FAILURE (Status))
+        {
+            DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, MsgBuffer);
+            return (ByteLength - Count);
+        }
+
+        Buffer[i] = (UINT8) Value;
+    }
+
+    ACPI_FREE (StringValue);
+    return (ByteLength - Count);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtCompileFlag
+ *
+ * PARAMETERS:  Buffer              - Output buffer
+ *              Field               - Field to be compiled
+ *              Info                - Flag info
+ *
+ * RETURN:
+ *
+ * DESCRIPTION: Compile a flag
+ *
+ *****************************************************************************/
+
+void
+DtCompileFlag (
+    UINT8                   *Buffer,
+    DT_FIELD                *Field,
+    ACPI_DMTABLE_INFO       *Info)
+{
+    UINT64                  Value = 0;
+    UINT32                  BitLength = 1;
+    UINT8                   BitPosition = 0;
+    ACPI_STATUS             Status;
+
+
+    Status = DtStrtoul64 (Field->Value, &Value);
+    if (ACPI_FAILURE (Status))
+    {
+        DtError (ASL_ERROR, ASL_MSG_INVALID_HEX_INTEGER, Field, NULL);
+    }
+
+    switch (Info->Opcode)
+    {
+    case ACPI_DMT_FLAG0:
+    case ACPI_DMT_FLAG1:
+    case ACPI_DMT_FLAG2:
+    case ACPI_DMT_FLAG3:
+    case ACPI_DMT_FLAG4:
+    case ACPI_DMT_FLAG5:
+    case ACPI_DMT_FLAG6:
+    case ACPI_DMT_FLAG7:
+
+        BitPosition = Info->Opcode;
+        BitLength = 1;
+        break;
+
+    case ACPI_DMT_FLAGS0:
+
+        BitPosition = 0;
+        BitLength = 2;
+        break;
+
+
+    case ACPI_DMT_FLAGS1:
+
+        BitPosition = 1;
+        BitLength = 2;
+        break;
+
+
+    case ACPI_DMT_FLAGS2:
+
+        BitPosition = 2;
+        BitLength = 2;
+        break;
+
+    case ACPI_DMT_FLAGS4:
+
+        BitPosition = 4;
+        BitLength = 2;
+        break;
+
+    default:
+
+        DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid flag opcode");
+        break;
+    }
+
+    /* Check range of the input flag value */
+
+    if (Value >= ((UINT64) 1 << BitLength))
+    {
+        sprintf (MsgBuffer, "Maximum %u bit", BitLength);
+        DtError (ASL_ERROR, ASL_MSG_FLAG_VALUE, Field, MsgBuffer);
+        Value = 0;
+    }
+
+    *Buffer |= (UINT8) (Value << BitPosition);
+}