384 lines
10 KiB
C
384 lines
10 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: utalloc - local memory allocation routines
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2013, 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.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "acdebug.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utalloc")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_create_caches
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create all local caches
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_ut_create_caches(void)
|
|
{
|
|
acpi_status status;
|
|
|
|
/* Object Caches, for frequently used objects */
|
|
|
|
status =
|
|
acpi_os_create_cache("Acpi-Namespace",
|
|
sizeof(struct acpi_namespace_node),
|
|
ACPI_MAX_NAMESPACE_CACHE_DEPTH,
|
|
&acpi_gbl_namespace_cache);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status =
|
|
acpi_os_create_cache("Acpi-State", sizeof(union acpi_generic_state),
|
|
ACPI_MAX_STATE_CACHE_DEPTH,
|
|
&acpi_gbl_state_cache);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status =
|
|
acpi_os_create_cache("Acpi-Parse",
|
|
sizeof(struct acpi_parse_obj_common),
|
|
ACPI_MAX_PARSE_CACHE_DEPTH,
|
|
&acpi_gbl_ps_node_cache);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status =
|
|
acpi_os_create_cache("Acpi-ParseExt",
|
|
sizeof(struct acpi_parse_obj_named),
|
|
ACPI_MAX_EXTPARSE_CACHE_DEPTH,
|
|
&acpi_gbl_ps_node_ext_cache);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status =
|
|
acpi_os_create_cache("Acpi-Operand",
|
|
sizeof(union acpi_operand_object),
|
|
ACPI_MAX_OBJECT_CACHE_DEPTH,
|
|
&acpi_gbl_operand_cache);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
|
|
|
|
/* Memory allocation lists */
|
|
|
|
status = acpi_ut_create_list("Acpi-Global", 0, &acpi_gbl_global_list);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
status =
|
|
acpi_ut_create_list("Acpi-Namespace",
|
|
sizeof(struct acpi_namespace_node),
|
|
&acpi_gbl_ns_node_list);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
#endif
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_delete_caches
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Purge and delete all local caches
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ut_delete_caches(void)
|
|
{
|
|
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
|
|
char buffer[7];
|
|
|
|
if (acpi_gbl_display_final_mem_stats) {
|
|
ACPI_STRCPY(buffer, "MEMORY");
|
|
(void)acpi_db_display_statistics(buffer);
|
|
}
|
|
#endif
|
|
|
|
(void)acpi_os_delete_cache(acpi_gbl_namespace_cache);
|
|
acpi_gbl_namespace_cache = NULL;
|
|
|
|
(void)acpi_os_delete_cache(acpi_gbl_state_cache);
|
|
acpi_gbl_state_cache = NULL;
|
|
|
|
(void)acpi_os_delete_cache(acpi_gbl_operand_cache);
|
|
acpi_gbl_operand_cache = NULL;
|
|
|
|
(void)acpi_os_delete_cache(acpi_gbl_ps_node_cache);
|
|
acpi_gbl_ps_node_cache = NULL;
|
|
|
|
(void)acpi_os_delete_cache(acpi_gbl_ps_node_ext_cache);
|
|
acpi_gbl_ps_node_ext_cache = NULL;
|
|
|
|
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
|
|
|
|
/* Debug only - display leftover memory allocation, if any */
|
|
|
|
acpi_ut_dump_allocations(ACPI_UINT32_MAX, NULL);
|
|
|
|
/* Free memory lists */
|
|
|
|
ACPI_FREE(acpi_gbl_global_list);
|
|
acpi_gbl_global_list = NULL;
|
|
|
|
ACPI_FREE(acpi_gbl_ns_node_list);
|
|
acpi_gbl_ns_node_list = NULL;
|
|
#endif
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_validate_buffer
|
|
*
|
|
* PARAMETERS: buffer - Buffer descriptor to be validated
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Perform parameter validation checks on an struct acpi_buffer
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ut_validate_buffer(struct 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: acpi_ut_initialize_buffer
|
|
*
|
|
* PARAMETERS: buffer - Buffer to be validated
|
|
* required_length - 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
|
|
acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
|
|
acpi_size required_length)
|
|
{
|
|
acpi_size input_buffer_length;
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!buffer || !required_length) {
|
|
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.
|
|
*/
|
|
input_buffer_length = buffer->length;
|
|
buffer->length = required_length;
|
|
|
|
/*
|
|
* The input buffer length contains the actual buffer length, or the type
|
|
* of buffer to be allocated by this routine.
|
|
*/
|
|
switch (input_buffer_length) {
|
|
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 = acpi_os_allocate(required_length);
|
|
break;
|
|
|
|
case ACPI_ALLOCATE_LOCAL_BUFFER:
|
|
|
|
/* Allocate a new buffer with local interface to allow tracking */
|
|
|
|
buffer->pointer = ACPI_ALLOCATE(required_length);
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Existing buffer: Validate the size of the buffer */
|
|
|
|
if (input_buffer_length < required_length) {
|
|
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, required_length);
|
|
return (AE_OK);
|
|
}
|
|
|
|
#ifdef NOT_USED_BY_LINUX
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_allocate
|
|
*
|
|
* 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 *acpi_ut_allocate(acpi_size size,
|
|
u32 component, const char *module, u32 line)
|
|
{
|
|
void *allocation;
|
|
|
|
ACPI_FUNCTION_TRACE_U32(ut_allocate, 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 = acpi_os_allocate(size);
|
|
if (!allocation) {
|
|
|
|
/* Report allocation error */
|
|
|
|
ACPI_WARNING((module, line,
|
|
"Could not allocate size %u", (u32) size));
|
|
|
|
return_PTR(NULL);
|
|
}
|
|
|
|
return_PTR(allocation);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_allocate_zeroed
|
|
*
|
|
* 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 *acpi_ut_allocate_zeroed(acpi_size size,
|
|
u32 component, const char *module, u32 line)
|
|
{
|
|
void *allocation;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
allocation = acpi_ut_allocate(size, component, module, line);
|
|
if (allocation) {
|
|
|
|
/* Clear the memory block */
|
|
|
|
ACPI_MEMSET(allocation, 0, size);
|
|
}
|
|
|
|
return (allocation);
|
|
}
|
|
#endif
|