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/******************************************************************************
*
* Module Name: utalloc - local memory allocation routines
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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 __UTALLOC_C__
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acdebug.h>
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("utalloc")
/*******************************************************************************
*
* FUNCTION: AcpiUtCreateCaches
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Create all local caches
*
******************************************************************************/
ACPI_STATUS
AcpiUtCreateCaches (
void)
{
ACPI_STATUS Status;
/* Object Caches, for frequently used objects */
Status = AcpiOsCreateCache ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE),
ACPI_MAX_NAMESPACE_CACHE_DEPTH, &AcpiGbl_NamespaceCache);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Status = AcpiOsCreateCache ("Acpi-State", sizeof (ACPI_GENERIC_STATE),
ACPI_MAX_STATE_CACHE_DEPTH, &AcpiGbl_StateCache);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Status = AcpiOsCreateCache ("Acpi-Parse", sizeof (ACPI_PARSE_OBJ_COMMON),
ACPI_MAX_PARSE_CACHE_DEPTH, &AcpiGbl_PsNodeCache);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Status = AcpiOsCreateCache ("Acpi-ParseExt", sizeof (ACPI_PARSE_OBJ_NAMED),
ACPI_MAX_EXTPARSE_CACHE_DEPTH, &AcpiGbl_PsNodeExtCache);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Status = AcpiOsCreateCache ("Acpi-Operand", sizeof (ACPI_OPERAND_OBJECT),
ACPI_MAX_OBJECT_CACHE_DEPTH, &AcpiGbl_OperandCache);
if (ACPI_FAILURE (Status))
{
return (Status);
}
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
/* Memory allocation lists */
Status = AcpiUtCreateList ("Acpi-Global", 0,
&AcpiGbl_GlobalList);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Status = AcpiUtCreateList ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE),
&AcpiGbl_NsNodeList);
if (ACPI_FAILURE (Status))
{
return (Status);
}
#endif
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtDeleteCaches
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Purge and delete all local caches
*
******************************************************************************/
ACPI_STATUS
AcpiUtDeleteCaches (
void)
{
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
char Buffer[7];
if (AcpiGbl_DisplayFinalMemStats)
{
ACPI_STRCPY (Buffer, "MEMORY");
(void) AcpiDbDisplayStatistics (Buffer);
}
#endif
(void) AcpiOsDeleteCache (AcpiGbl_NamespaceCache);
AcpiGbl_NamespaceCache = NULL;
(void) AcpiOsDeleteCache (AcpiGbl_StateCache);
AcpiGbl_StateCache = NULL;
(void) AcpiOsDeleteCache (AcpiGbl_OperandCache);
AcpiGbl_OperandCache = NULL;
(void) AcpiOsDeleteCache (AcpiGbl_PsNodeCache);
AcpiGbl_PsNodeCache = NULL;
(void) AcpiOsDeleteCache (AcpiGbl_PsNodeExtCache);
AcpiGbl_PsNodeExtCache = NULL;
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
/* Debug only - display leftover memory allocation, if any */
AcpiUtDumpAllocations (ACPI_UINT32_MAX, NULL);
/* Free memory lists */
AcpiOsFree (AcpiGbl_GlobalList);
AcpiGbl_GlobalList = NULL;
AcpiOsFree (AcpiGbl_NsNodeList);
AcpiGbl_NsNodeList = NULL;
#endif
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtValidateBuffer
*
* PARAMETERS: Buffer - Buffer descriptor to be validated
*
* RETURN: Status
*
* DESCRIPTION: Perform parameter validation checks on an ACPI_BUFFER
*
******************************************************************************/
ACPI_STATUS
AcpiUtValidateBuffer (
ACPI_BUFFER *Buffer)
{
/* Obviously, the structure pointer must be valid */
if (!Buffer)
{
return (AE_BAD_PARAMETER);
}
/* Special semantics for the length */
if ((Buffer->Length == ACPI_NO_BUFFER) ||
(Buffer->Length == ACPI_ALLOCATE_BUFFER) ||
(Buffer->Length == ACPI_ALLOCATE_LOCAL_BUFFER))
{
return (AE_OK);
}
/* Length is valid, the buffer pointer must be also */
if (!Buffer->Pointer)
{
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtInitializeBuffer
*
* PARAMETERS: Buffer - Buffer to be validated
* RequiredLength - Length needed
*
* RETURN: Status
*
* DESCRIPTION: Validate that the buffer is of the required length or
* allocate a new buffer. Returned buffer is always zeroed.
*
******************************************************************************/
ACPI_STATUS
AcpiUtInitializeBuffer (
ACPI_BUFFER *Buffer,
ACPI_SIZE RequiredLength)
{
ACPI_SIZE InputBufferLength;
/* Parameter validation */
if (!Buffer || !RequiredLength)
{
return (AE_BAD_PARAMETER);
}
/*
* Buffer->Length is used as both an input and output parameter. Get the
* input actual length and set the output required buffer length.
*/
InputBufferLength = Buffer->Length;
Buffer->Length = RequiredLength;
/*
* The input buffer length contains the actual buffer length, or the type
* of buffer to be allocated by this routine.
*/
switch (InputBufferLength)
{
case ACPI_NO_BUFFER:
/* Return the exception (and the required buffer length) */
return (AE_BUFFER_OVERFLOW);
case ACPI_ALLOCATE_BUFFER:
/* Allocate a new buffer */
Buffer->Pointer = AcpiOsAllocate (RequiredLength);
break;
case ACPI_ALLOCATE_LOCAL_BUFFER:
/* Allocate a new buffer with local interface to allow tracking */
Buffer->Pointer = ACPI_ALLOCATE (RequiredLength);
break;
default:
/* Existing buffer: Validate the size of the buffer */
if (InputBufferLength < RequiredLength)
{
return (AE_BUFFER_OVERFLOW);
}
break;
}
/* Validate allocation from above or input buffer pointer */
if (!Buffer->Pointer)
{
return (AE_NO_MEMORY);
}
/* Have a valid buffer, clear it */
ACPI_MEMSET (Buffer->Pointer, 0, RequiredLength);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtAllocate
*
* PARAMETERS: Size - Size of the allocation
* Component - Component type of caller
* Module - Source file name of caller
* Line - Line number of caller
*
* RETURN: Address of the allocated memory on success, NULL on failure.
*
* DESCRIPTION: Subsystem equivalent of malloc.
*
******************************************************************************/
void *
AcpiUtAllocate (
ACPI_SIZE Size,
UINT32 Component,
const char *Module,
UINT32 Line)
{
void *Allocation;
ACPI_FUNCTION_TRACE_U32 (UtAllocate, Size);
/* Check for an inadvertent size of zero bytes */
if (!Size)
{
ACPI_WARNING ((Module, Line,
"Attempt to allocate zero bytes, allocating 1 byte"));
Size = 1;
}
Allocation = AcpiOsAllocate (Size);
if (!Allocation)
{
/* Report allocation error */
ACPI_WARNING ((Module, Line,
"Could not allocate size %u", (UINT32) Size));
return_PTR (NULL);
}
return_PTR (Allocation);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtAllocateZeroed
*
* PARAMETERS: Size - Size of the allocation
* Component - Component type of caller
* Module - Source file name of caller
* Line - Line number of caller
*
* RETURN: Address of the allocated memory on success, NULL on failure.
*
* DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory.
*
******************************************************************************/
void *
AcpiUtAllocateZeroed (
ACPI_SIZE Size,
UINT32 Component,
const char *Module,
UINT32 Line)
{
void *Allocation;
ACPI_FUNCTION_ENTRY ();
Allocation = AcpiUtAllocate (Size, Component, Module, Line);
if (Allocation)
{
/* Clear the memory block */
ACPI_MEMSET (Allocation, 0, Size);
}
return (Allocation);
}