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Diffstat (limited to 'sys/contrib/dev/acpica/exmisc.c')
| -rw-r--r-- | sys/contrib/dev/acpica/exmisc.c | 620 |
1 files changed, 620 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/exmisc.c b/sys/contrib/dev/acpica/exmisc.c new file mode 100644 index 0000000..7343ac5 --- /dev/null +++ b/sys/contrib/dev/acpica/exmisc.c @@ -0,0 +1,620 @@ + +/****************************************************************************** + * + * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes + * $Revision: 112 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2002, 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. + * + *****************************************************************************/ + +#define __EXMISC_C__ + +#include "acpi.h" +#include "acinterp.h" +#include "amlcode.h" + + +#define _COMPONENT ACPI_EXECUTER + ACPI_MODULE_NAME ("exmisc") + + +/******************************************************************************* + * + * FUNCTION: AcpiExGetObjectReference + * + * PARAMETERS: ObjDesc - Create a reference to this object + * ReturnDesc - Where to store the reference + * WalkState - Current state + * + * RETURN: Status + * + * DESCRIPTION: Obtain and return a "reference" to the target object + * Common code for the RefOfOp and the CondRefOfOp. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExGetObjectReference ( + ACPI_OPERAND_OBJECT *ObjDesc, + ACPI_OPERAND_OBJECT **ReturnDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT *ReferenceObj; + ACPI_OPERAND_OBJECT *ReferencedObj; + + + ACPI_FUNCTION_TRACE_PTR ("ExGetObjectReference", ObjDesc); + + + *ReturnDesc = NULL; + + switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc)) + { + case ACPI_DESC_TYPE_OPERAND: + + if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_LOCAL_REFERENCE) + { + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + + /* + * Must be a reference to a Local or Arg + */ + switch (ObjDesc->Reference.Opcode) + { + case AML_LOCAL_OP: + case AML_ARG_OP: + + /* The referenced object is the pseudo-node for the local/arg */ + + ReferencedObj = ObjDesc->Reference.Object; + break; + + default: + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Reference subtype %X\n", + ObjDesc->Reference.Opcode)); + return_ACPI_STATUS (AE_AML_INTERNAL); + } + break; + + + case ACPI_DESC_TYPE_NAMED: + + /* + * A named reference that has already been resolved to a Node + */ + ReferencedObj = ObjDesc; + break; + + + default: + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid descriptor type %X in %p\n", + ACPI_GET_DESCRIPTOR_TYPE (ObjDesc), ObjDesc)); + return_ACPI_STATUS (AE_TYPE); + } + + + /* Create a new reference object */ + + ReferenceObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE); + if (!ReferenceObj) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + ReferenceObj->Reference.Opcode = AML_REF_OF_OP; + ReferenceObj->Reference.Object = ReferencedObj; + *ReturnDesc = ReferenceObj; + + ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p Type [%s], returning Reference %p\n", + ObjDesc, AcpiUtGetObjectTypeName (ObjDesc), *ReturnDesc)); + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExConcatTemplate + * + * PARAMETERS: *ObjDesc - Object to be converted. Must be an + * Integer, Buffer, or String + * WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Concatenate two resource templates + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExConcatTemplate ( + ACPI_OPERAND_OBJECT *ObjDesc1, + ACPI_OPERAND_OBJECT *ObjDesc2, + ACPI_OPERAND_OBJECT **ActualReturnDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT *ReturnDesc; + UINT8 *NewBuf; + UINT8 *EndTag1; + UINT8 *EndTag2; + ACPI_SIZE Length1; + ACPI_SIZE Length2; + + + ACPI_FUNCTION_TRACE ("ExConcatTemplate"); + + + /* Find the EndTags in each resource template */ + + EndTag1 = AcpiUtGetResourceEndTag (ObjDesc1); + EndTag2 = AcpiUtGetResourceEndTag (ObjDesc2); + if (!EndTag1 || !EndTag2) + { + return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + } + + /* Compute the length of each part */ + + Length1 = ACPI_PTR_DIFF (EndTag1, ObjDesc1->Buffer.Pointer); + Length2 = ACPI_PTR_DIFF (EndTag2, ObjDesc2->Buffer.Pointer) + + 2; /* Size of END_TAG */ + + /* Create a new buffer object for the result */ + + ReturnDesc = AcpiUtCreateBufferObject (Length1 + Length2); + if (!ReturnDesc) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Copy the templates to the new descriptor */ + + NewBuf = ReturnDesc->Buffer.Pointer; + ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer, Length1); + ACPI_MEMCPY (NewBuf + Length1, ObjDesc2->Buffer.Pointer, Length2); + + /* Compute the new checksum */ + + NewBuf[ReturnDesc->Buffer.Length - 1] = + AcpiUtGenerateChecksum (ReturnDesc->Buffer.Pointer, + (ReturnDesc->Buffer.Length - 1)); + + /* Return the completed template descriptor */ + + *ActualReturnDesc = ReturnDesc; + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoConcatenate + * + * PARAMETERS: ObjDesc1 - First source object + * ObjDesc2 - Second source object + * ActualReturnDesc - Where to place the return object + * WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Concatenate two objects OF THE SAME TYPE. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExDoConcatenate ( + ACPI_OPERAND_OBJECT *ObjDesc1, + ACPI_OPERAND_OBJECT *ObjDesc2, + ACPI_OPERAND_OBJECT **ActualReturnDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status; + UINT32 i; + ACPI_INTEGER ThisInteger; + ACPI_OPERAND_OBJECT *ReturnDesc; + NATIVE_CHAR *NewBuf; + + + ACPI_FUNCTION_ENTRY (); + + + /* + * There are three cases to handle: + * + * 1) Two Integers concatenated to produce a new Buffer + * 2) Two Strings concatenated to produce a new String + * 3) Two Buffers concatenated to produce a new Buffer + */ + switch (ACPI_GET_OBJECT_TYPE (ObjDesc1)) + { + case ACPI_TYPE_INTEGER: + + /* Result of two Integers is a Buffer */ + /* Need enough buffer space for two integers */ + + ReturnDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth * 2); + if (!ReturnDesc) + { + return (AE_NO_MEMORY); + } + + NewBuf = (NATIVE_CHAR *) ReturnDesc->Buffer.Pointer; + + /* Convert the first integer */ + + ThisInteger = ObjDesc1->Integer.Value; + for (i = 0; i < AcpiGbl_IntegerByteWidth; i++) + { + NewBuf[i] = (NATIVE_CHAR) ThisInteger; + ThisInteger >>= 8; + } + + /* Convert the second integer */ + + ThisInteger = ObjDesc2->Integer.Value; + for (; i < (ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); i++) + { + NewBuf[i] = (NATIVE_CHAR) ThisInteger; + ThisInteger >>= 8; + } + + break; + + + case ACPI_TYPE_STRING: + + /* Result of two Strings is a String */ + + ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING); + if (!ReturnDesc) + { + return (AE_NO_MEMORY); + } + + /* Operand0 is string */ + + NewBuf = ACPI_MEM_ALLOCATE ((ACPI_SIZE) ObjDesc1->String.Length + + (ACPI_SIZE) ObjDesc2->String.Length + 1); + if (!NewBuf) + { + ACPI_REPORT_ERROR + (("ExDoConcatenate: String allocation failure\n")); + Status = AE_NO_MEMORY; + goto Cleanup; + } + + /* Concatenate the strings */ + + ACPI_STRCPY (NewBuf, ObjDesc1->String.Pointer); + ACPI_STRCPY (NewBuf + ObjDesc1->String.Length, + ObjDesc2->String.Pointer); + + /* Complete the String object initialization */ + + ReturnDesc->String.Pointer = NewBuf; + ReturnDesc->String.Length = ObjDesc1->String.Length + + ObjDesc2->String.Length; + break; + + + case ACPI_TYPE_BUFFER: + + /* Result of two Buffers is a Buffer */ + + ReturnDesc = AcpiUtCreateBufferObject ( + (ACPI_SIZE) ObjDesc1->Buffer.Length + + (ACPI_SIZE) ObjDesc2->Buffer.Length); + if (!ReturnDesc) + { + return (AE_NO_MEMORY); + } + + NewBuf = (NATIVE_CHAR *) ReturnDesc->Buffer.Pointer; + + /* Concatenate the buffers */ + + ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer, + ObjDesc1->Buffer.Length); + ACPI_MEMCPY (NewBuf + ObjDesc1->Buffer.Length, ObjDesc2->Buffer.Pointer, + ObjDesc2->Buffer.Length); + + break; + + + default: + + /* Invalid object type, should not happen here */ + + Status = AE_AML_INTERNAL; + ReturnDesc = NULL; + } + + *ActualReturnDesc = ReturnDesc; + return (AE_OK); + + +Cleanup: + + AcpiUtRemoveReference (ReturnDesc); + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoMathOp + * + * PARAMETERS: Opcode - AML opcode + * Operand0 - Integer operand #0 + * Operand1 - Integer operand #1 + * + * RETURN: Integer result of the operation + * + * DESCRIPTION: Execute a math AML opcode. The purpose of having all of the + * math functions here is to prevent a lot of pointer dereferencing + * to obtain the operands. + * + ******************************************************************************/ + +ACPI_INTEGER +AcpiExDoMathOp ( + UINT16 Opcode, + ACPI_INTEGER Operand0, + ACPI_INTEGER Operand1) +{ + + + switch (Opcode) + { + case AML_ADD_OP: /* Add (Operand0, Operand1, Result) */ + + return (Operand0 + Operand1); + + + case AML_BIT_AND_OP: /* And (Operand0, Operand1, Result) */ + + return (Operand0 & Operand1); + + + case AML_BIT_NAND_OP: /* NAnd (Operand0, Operand1, Result) */ + + return (~(Operand0 & Operand1)); + + + case AML_BIT_OR_OP: /* Or (Operand0, Operand1, Result) */ + + return (Operand0 | Operand1); + + + case AML_BIT_NOR_OP: /* NOr (Operand0, Operand1, Result) */ + + return (~(Operand0 | Operand1)); + + + case AML_BIT_XOR_OP: /* XOr (Operand0, Operand1, Result) */ + + return (Operand0 ^ Operand1); + + + case AML_MULTIPLY_OP: /* Multiply (Operand0, Operand1, Result) */ + + return (Operand0 * Operand1); + + + case AML_SHIFT_LEFT_OP: /* ShiftLeft (Operand, ShiftCount, Result) */ + + return (Operand0 << Operand1); + + + case AML_SHIFT_RIGHT_OP: /* ShiftRight (Operand, ShiftCount, Result) */ + + return (Operand0 >> Operand1); + + + case AML_SUBTRACT_OP: /* Subtract (Operand0, Operand1, Result) */ + + return (Operand0 - Operand1); + + default: + + return (0); + } +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExDoLogicalOp + * + * PARAMETERS: Opcode - AML opcode + * Operand0 - Integer operand #0 + * Operand1 - Integer operand #1 + * + * RETURN: TRUE/FALSE result of the operation + * + * DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the + * functions here is to prevent a lot of pointer dereferencing + * to obtain the operands and to simplify the generation of the + * logical value. + * + * Note: cleanest machine code seems to be produced by the code + * below, rather than using statements of the form: + * Result = (Operand0 == Operand1); + * + ******************************************************************************/ + +BOOLEAN +AcpiExDoLogicalOp ( + UINT16 Opcode, + ACPI_INTEGER Operand0, + ACPI_INTEGER Operand1) +{ + + + switch (Opcode) + { + + case AML_LAND_OP: /* LAnd (Operand0, Operand1) */ + + if (Operand0 && Operand1) + { + return (TRUE); + } + break; + + + case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */ + + if (Operand0 == Operand1) + { + return (TRUE); + } + break; + + + case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */ + + if (Operand0 > Operand1) + { + return (TRUE); + } + break; + + + case AML_LLESS_OP: /* LLess (Operand0, Operand1) */ + + if (Operand0 < Operand1) + { + return (TRUE); + } + break; + + + case AML_LOR_OP: /* LOr (Operand0, Operand1) */ + + if (Operand0 || Operand1) + { + return (TRUE); + } + break; + + default: + break; + } + + return (FALSE); +} + + |
