diff options
Diffstat (limited to 'sys/contrib/dev/acpica/dmbuffer.c')
| -rw-r--r-- | sys/contrib/dev/acpica/dmbuffer.c | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/dmbuffer.c b/sys/contrib/dev/acpica/dmbuffer.c new file mode 100644 index 0000000..5540220 --- /dev/null +++ b/sys/contrib/dev/acpica/dmbuffer.c @@ -0,0 +1,555 @@ +/******************************************************************************* + * + * Module Name: dmbuffer - AML disassembler, buffer and string support + * $Revision: 1.25 $ + * + ******************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, 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. + * + *****************************************************************************/ + + +#include <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/acdisasm.h> +#include <contrib/dev/acpica/acparser.h> +#include <contrib/dev/acpica/amlcode.h> + + +#ifdef ACPI_DISASSEMBLER + +#define _COMPONENT ACPI_CA_DEBUGGER + ACPI_MODULE_NAME ("dmbuffer") + +/* Local prototypes */ + +static void +AcpiDmUnicode ( + ACPI_PARSE_OBJECT *Op); + + +/******************************************************************************* + * + * FUNCTION: AcpiDmDisasmByteList + * + * PARAMETERS: Level - Current source code indentation level + * ByteData - Pointer to the byte list + * ByteCount - Length of the byte list + * + * RETURN: None + * + * DESCRIPTION: Dump an AML "ByteList" in Hex format. 8 bytes per line, prefixed + * with the hex buffer offset. + * + ******************************************************************************/ + +void +AcpiDmDisasmByteList ( + UINT32 Level, + UINT8 *ByteData, + UINT32 ByteCount) +{ + UINT32 i; + + + if (!ByteCount) + { + return; + } + + /* Dump the byte list */ + + for (i = 0; i < ByteCount; i++) + { + /* New line every 8 bytes */ + + if (((i % 8) == 0) && (i < ByteCount)) + { + if (i > 0) + { + AcpiOsPrintf ("\n"); + } + + AcpiDmIndent (Level); + if (ByteCount > 7) + { + AcpiOsPrintf ("/* %04X */ ", i); + } + } + + AcpiOsPrintf ("0x%2.2X", (UINT32) ByteData[i]); + + /* Add comma if there are more bytes to display */ + + if (i < (ByteCount -1)) + { + AcpiOsPrintf (", "); + } + } + + if (Level) + { + AcpiOsPrintf ("\n"); + } +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmByteList + * + * PARAMETERS: Info - Parse tree walk info + * Op - Byte list op + * + * RETURN: None + * + * DESCRIPTION: Dump a buffer byte list, handling the various types of buffers. + * Buffer type must be already set in the Op DisasmOpcode. + * + ******************************************************************************/ + +void +AcpiDmByteList ( + ACPI_OP_WALK_INFO *Info, + ACPI_PARSE_OBJECT *Op) +{ + UINT8 *ByteData; + UINT32 ByteCount; + + + ByteData = Op->Named.Data; + ByteCount = (UINT32) Op->Common.Value.Integer; + + /* + * The byte list belongs to a buffer, and can be produced by either + * a ResourceTemplate, Unicode, quoted string, or a plain byte list. + */ + switch (Op->Common.Parent->Common.DisasmOpcode) + { + case ACPI_DASM_RESOURCE: + + AcpiDmResourceTemplate (Info, Op->Common.Parent, ByteData, ByteCount); + break; + + case ACPI_DASM_STRING: + + AcpiDmIndent (Info->Level); + AcpiUtPrintString ((char *) ByteData, ACPI_UINT8_MAX); + AcpiOsPrintf ("\n"); + break; + + case ACPI_DASM_UNICODE: + + AcpiDmUnicode (Op); + break; + + case ACPI_DASM_BUFFER: + default: + + /* + * Not a resource, string, or unicode string. + * Just dump the buffer + */ + AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount); + break; + } +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmIsUnicodeBuffer + * + * PARAMETERS: Op - Buffer Object to be examined + * + * RETURN: TRUE if buffer contains a UNICODE string + * + * DESCRIPTION: Determine if a buffer Op contains a Unicode string + * + ******************************************************************************/ + +BOOLEAN +AcpiDmIsUnicodeBuffer ( + ACPI_PARSE_OBJECT *Op) +{ + UINT8 *ByteData; + UINT32 ByteCount; + UINT32 WordCount; + ACPI_PARSE_OBJECT *SizeOp; + ACPI_PARSE_OBJECT *NextOp; + ACPI_NATIVE_UINT i; + + + /* Buffer size is the buffer argument */ + + SizeOp = Op->Common.Value.Arg; + + /* Next, the initializer byte list to examine */ + + NextOp = SizeOp->Common.Next; + if (!NextOp) + { + return (FALSE); + } + + /* Extract the byte list info */ + + ByteData = NextOp->Named.Data; + ByteCount = (UINT32) NextOp->Common.Value.Integer; + WordCount = ACPI_DIV_2 (ByteCount); + + /* + * Unicode string must have an even number of bytes and last + * word must be zero + */ + if ((!ByteCount) || + (ByteCount < 4) || + (ByteCount & 1) || + ((UINT16 *) (void *) ByteData)[WordCount - 1] != 0) + { + return (FALSE); + } + + /* For each word, 1st byte must be ascii, 2nd byte must be zero */ + + for (i = 0; i < (ByteCount - 2); i += 2) + { + if ((!ACPI_IS_PRINT (ByteData[i])) || + (ByteData[i + 1] != 0)) + { + return (FALSE); + } + } + + /* Ignore the Size argument in the disassembly of this buffer op */ + + SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; + return (TRUE); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmIsStringBuffer + * + * PARAMETERS: Op - Buffer Object to be examined + * + * RETURN: TRUE if buffer contains a ASCII string, FALSE otherwise + * + * DESCRIPTION: Determine if a buffer Op contains a ASCII string + * + ******************************************************************************/ + +BOOLEAN +AcpiDmIsStringBuffer ( + ACPI_PARSE_OBJECT *Op) +{ + UINT8 *ByteData; + UINT32 ByteCount; + ACPI_PARSE_OBJECT *SizeOp; + ACPI_PARSE_OBJECT *NextOp; + UINT32 i; + + + /* Buffer size is the buffer argument */ + + SizeOp = Op->Common.Value.Arg; + + /* Next, the initializer byte list to examine */ + + NextOp = SizeOp->Common.Next; + if (!NextOp) + { + return (FALSE); + } + + /* Extract the byte list info */ + + ByteData = NextOp->Named.Data; + ByteCount = (UINT32) NextOp->Common.Value.Integer; + + /* Last byte must be the null terminator */ + + if ((!ByteCount) || + (ByteCount < 2) || + (ByteData[ByteCount-1] != 0)) + { + return (FALSE); + } + + for (i = 0; i < (ByteCount - 1); i++) + { + /* TBD: allow some escapes (non-ascii chars). + * they will be handled in the string output routine + */ + + if (!ACPI_IS_PRINT (ByteData[i])) + { + return (FALSE); + } + } + + return (TRUE); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmUnicode + * + * PARAMETERS: Op - Byte List op containing Unicode string + * + * RETURN: None + * + * DESCRIPTION: Dump Unicode string as a standard ASCII string. (Remove + * the extra zero bytes). + * + ******************************************************************************/ + +static void +AcpiDmUnicode ( + ACPI_PARSE_OBJECT *Op) +{ + UINT16 *WordData; + UINT32 WordCount; + UINT32 i; + + + /* Extract the buffer info as a WORD buffer */ + + WordData = ACPI_CAST_PTR (UINT16, Op->Named.Data); + WordCount = ACPI_DIV_2 (((UINT32) Op->Common.Value.Integer)); + + + AcpiOsPrintf ("\""); + + /* Write every other byte as an ASCII character */ + + for (i = 0; i < (WordCount - 1); i++) + { + AcpiOsPrintf ("%c", (int) WordData[i]); + } + + AcpiOsPrintf ("\")"); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmIsEisaId + * + * PARAMETERS: Op - Op to be examined + * + * RETURN: None + * + * DESCRIPTION: Determine if an Op can be converted to an EisaId. + * + ******************************************************************************/ + +void +AcpiDmIsEisaId ( + ACPI_PARSE_OBJECT *Op) +{ + UINT32 Name; + UINT32 BigEndianId; + ACPI_PARSE_OBJECT *NextOp; + ACPI_NATIVE_UINT i; + UINT32 Prefix[3]; + + + /* Get the NameSegment */ + + Name = AcpiPsGetName (Op); + if (!Name) + { + return; + } + + /* We are looking for _HID */ + + if (!ACPI_COMPARE_NAME (&Name, METHOD_NAME__HID)) + { + return; + } + + /* The parameter must be either a word or a dword */ + + NextOp = AcpiPsGetDepthNext (NULL, Op); + if ((NextOp->Common.AmlOpcode != AML_DWORD_OP) && + (NextOp->Common.AmlOpcode != AML_WORD_OP)) + { + return; + } + + /* Swap from little-endian to big-endian to simplify conversion */ + + BigEndianId = AcpiUtDwordByteSwap ((UINT32) NextOp->Common.Value.Integer); + + /* Create the 3 leading ASCII letters */ + + Prefix[0] = ((BigEndianId >> 26) & 0x1F) + 0x40; + Prefix[1] = ((BigEndianId >> 21) & 0x1F) + 0x40; + Prefix[2] = ((BigEndianId >> 16) & 0x1F) + 0x40; + + /* Verify that all 3 are ascii and alpha */ + + for (i = 0; i < 3; i++) + { + if (!ACPI_IS_ASCII (Prefix[i]) || + !ACPI_IS_ALPHA (Prefix[i])) + { + return; + } + } + + /* OK - mark this node as convertable to an EISA ID */ + + NextOp->Common.DisasmOpcode = ACPI_DASM_EISAID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmEisaId + * + * PARAMETERS: EncodedId - Raw encoded EISA ID. + * + * RETURN: None + * + * DESCRIPTION: Convert an encoded EISAID back to the original ASCII String. + * + ******************************************************************************/ + +void +AcpiDmEisaId ( + UINT32 EncodedId) +{ + UINT32 BigEndianId; + + + /* Swap from little-endian to big-endian to simplify conversion */ + + BigEndianId = AcpiUtDwordByteSwap (EncodedId); + + + /* Split to form "AAANNNN" string */ + + AcpiOsPrintf ("EisaId (\"%c%c%c%4.4X\")", + + /* Three Alpha characters (AAA), 5 bits each */ + + (int) ((BigEndianId >> 26) & 0x1F) + 0x40, + (int) ((BigEndianId >> 21) & 0x1F) + 0x40, + (int) ((BigEndianId >> 16) & 0x1F) + 0x40, + + /* Numeric part (NNNN) is simply the lower 16 bits */ + + (UINT32) (BigEndianId & 0xFFFF)); +} + +#endif |
