138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
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/**************************************************************************************************************************
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* RESOURCE.C SigmaTel STIR4200 memory allocation module
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**************************************************************************************************************************
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* (C) Unpublished Copyright of Sigmatel, Inc. All Rights Reserved.
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*
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*
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* Created: 04/06/2000
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* Version 0.9
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*
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*
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**************************************************************************************************************************/
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#define DOBREAKS // enable debug breaks
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#include <ndis.h>
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#include <ntddndis.h> // defines OID's
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#include <usbdi.h>
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#include <usbdlib.h>
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#include "debug.h"
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#include "ircommon.h"
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#include "irndis.h"
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/*****************************************************************************
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*
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* Function: MyMemAlloc
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*
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* Synopsis: allocates a block of memory using NdisAllocateMemory
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*
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* Arguments: size - size of the block to allocate
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*
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* Returns: a pointer to the allocated block of memory
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*
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*
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*****************************************************************************/
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PVOID
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MyMemAlloc(
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UINT size
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)
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{
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PVOID pMem;
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NDIS_STATUS status;
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status = NdisAllocateMemoryWithTag( &pMem, size, IRUSB_TAG );
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if( status != NDIS_STATUS_SUCCESS )
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{
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DEBUGMSG(DBG_ERR, (" Memory allocation failed\n"));
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pMem = NULL;
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}
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return pMem;
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}
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/*****************************************************************************
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*
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* Function: MyMemFree
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*
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* Synopsis: frees a block of memory allocated by MyMemAlloc
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*
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* Arguments: memptr - memory to free
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* size - size of the block to free
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*
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*
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*****************************************************************************/
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VOID
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MyMemFree(
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PVOID pMem,
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UINT size
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)
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{
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NdisFreeMemory( pMem, size, 0 );
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}
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/*****************************************************************************
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*
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* Function: NewDevice
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*
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* Synopsis: allocates an IR device and zeros the memory
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*
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* Arguments: none
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*
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* Returns: initialized IR device or NULL (if alloc failed)
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*
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*
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*****************************************************************************/
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PIR_DEVICE
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NewDevice()
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{
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PIR_DEVICE pNewDev;
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pNewDev = MyMemAlloc( sizeof(IR_DEVICE) );
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if( pNewDev != NULL )
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{
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NdisZeroMemory( (PVOID)pNewDev, sizeof(IR_DEVICE) );
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if( !AllocUsbInfo( pNewDev ) )
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{
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MyMemFree( pNewDev, sizeof(IR_DEVICE) );
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pNewDev = NULL;
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}
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}
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return pNewDev;
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}
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/*****************************************************************************
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*
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* Function: FreeDevice
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*
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* Synopsis: frees an IR device structure
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*
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* Arguments: pThisDev - pointer to device to free
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*
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* Returns: none
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*
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*
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*****************************************************************************/
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VOID
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FreeDevice(
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IN OUT PIR_DEVICE pThisDev
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)
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{
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FreeUsbInfo( pThisDev );
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MyMemFree( (PVOID)pThisDev, sizeof(IR_DEVICE) );
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}
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