void *memPartAlloc
(
FAST PART_ID partId, /* memory partition to allocate from */
unsigned nBytes /* number of bytes to allocate */
)
{
if (ID_IS_SHARED (partId)) /* partition is shared? */
{
if (smMemPartAllocRtn == NULL)
{
errno = S_smObjLib_NOT_INITIALIZED;
return (NULL);
}
return ((void *) (*smMemPartAllocRtn) (SM_OBJ_ID_TO_ADRS (partId),
nBytes));
}
/* partition is local */
return (memPartAlignedAlloc (partId, nBytes, memDefaultAlignment));
}
void * ossPartMalloc
(
UINT32 numBytes /* Size of buffer to allocate */
)
{
void * pBfr;
void * pMoreMemory;
UINT32 growSize;
/* Create the USB memory partition from cache safe memory */
if (ossPartInitFlag == TRUE)
{
/* on the first pass create 64k chunk of cache safe memory for usb */
pUsbMemSpace = (char *) cacheDmaMalloc (usbMemPartSize);
if (pUsbMemSpace == NULL)
{
printf ("ossLib.c: unable to allocate USB memory space.\n");
return NULL;
}
/* make this chunk a partition */
usbMemPartId = memPartCreate (pUsbMemSpace, usbMemPartSize);
if (usbMemPartId == NULL)
{
printf ("ossLib.c: unable to create USB memory partition.\n");
return NULL;
}
ossPartInitFlag = FALSE;
}
/*
* If this call to ossMalloc is going to allocate more memory than is
* available in the partition, then grow the partition by 8k, or if
* numBytes is larger than 4k, then grow the partition by numBytes + 4k.
*/
if ((usbMemCount + numBytes) > (usbMemPartSize - 0x1000))
{
growSize = 0x2000;
if (numBytes > 0x1000)
growSize += numBytes;
pMoreMemory = cacheDmaMalloc (growSize);
if (pMoreMemory == NULL)
{
printf ("ossLib.c: ossPartMalloc could not cacheDmaMalloc() new" \
" memory.\n");
return NULL;
}
if (memPartAddToPool (usbMemPartId, pMoreMemory, growSize) == ERROR)
{
printf ("ossLib.c: ossPartMalloc could not add new memory to" \
" pool.\n");
return NULL;
}
usbMemPartSize += growSize;
}
/* From now on, use this partition for all USB mallocs */
pBfr = memPartAlignedAlloc (usbMemPartId,
ROUND_UP(numBytes, _CACHE_ALIGN_SIZE),
_CACHE_ALIGN_SIZE);
if (pBfr == NULL)
{
printf ("ossLib.c: unable to malloc USB memory.\n");
return NULL;
}
/* Update the amount of memory USB is currently using. */
usbMemCount += ROUND_UP(numBytes, _CACHE_ALIGN_SIZE);
return pBfr;
}
/*-------------------------------------------------------- */
void *
memalign(unsigned alignment,
unsigned size)
{
return memPartAlignedAlloc(memSysPartId,size,alignment);
}
