IMG_UINT32 DBGDIOCDrivReadLF(IMG_VOID * pvInBuffer, IMG_VOID * pvOutBuffer)
{
IMG_UINT32 * pui32BytesCopied;
PDBG_IN_READ psInParams;
psInParams = (PDBG_IN_READ) pvInBuffer;
pui32BytesCopied = (IMG_UINT32 *) pvOutBuffer;
*pui32BytesCopied = ExtDBGDrivReadLF((PDBG_STREAM) psInParams->pvStream,psInParams->ui32OutBufferSize,psInParams->pui8OutBuffer);
return(IMG_TRUE);
}
/*****************************************************************************
FUNCTION : DBGDIOCDrivReadLF
PURPOSE :
PARAMETERS :
RETURNS :
*****************************************************************************/
static IMG_UINT32 DBGDIOCDrivReadLF(IMG_VOID * pvInBuffer, IMG_VOID * pvOutBuffer)
{
IMG_UINT32 * pui32BytesCopied;
PDBG_IN_READ psInParams;
PDBG_STREAM psStream;
IMG_UINT8 *pui8ReadBuffer;
#ifdef UNDER_WDDM
IMG_UINT8 *pui8ClientBuffer;
#endif
psInParams = (PDBG_IN_READ) pvInBuffer;
pui32BytesCopied = (IMG_UINT32 *) pvOutBuffer;
#ifdef UNDER_WDDM
/* WDDM DbgDriv operates at DISPATCH level so it cannot write directly
* to pdump.exe's userspace buffer
*/
pui8ReadBuffer = HostNonPageablePageAlloc(
(psInParams->ui32OutBufferSize + HOST_PAGESIZE - 1) / HOST_PAGESIZE);
pui8ClientBuffer = psInParams->u.pui8OutBuffer;
#else
pui8ReadBuffer = psInParams->u.pui8OutBuffer;
#endif
psStream = SID2PStream(psInParams->hStream);
if (psStream != (PDBG_STREAM)IMG_NULL)
{
*pui32BytesCopied = ExtDBGDrivReadLF(psStream,
psInParams->ui32OutBufferSize,
pui8ReadBuffer);
#ifdef UNDER_WDDM
if(*pui32BytesCopied > 0)
{
HostMemCopy(pui8ClientBuffer, pui8ReadBuffer, *pui32BytesCopied);
}
HostNonPageablePageFree(pui8ReadBuffer);
#endif
return(IMG_TRUE);
}
else
{
/* invalid SID */
*pui32BytesCopied = 0;
return(IMG_FALSE);
}
}
/*****************************************************************************
FUNCTION : DBGDIOCDrivReadLF
PURPOSE :
PARAMETERS :
RETURNS :
*****************************************************************************/
static IMG_UINT32 DBGDIOCDrivReadLF(IMG_VOID * pvInBuffer, IMG_VOID * pvOutBuffer)
{
IMG_UINT32 * pui32BytesCopied;
PDBG_IN_READ psInParams;
PDBG_STREAM psStream;
psInParams = (PDBG_IN_READ) pvInBuffer;
pui32BytesCopied = (IMG_UINT32 *) pvOutBuffer;
psStream = SID2PStream(psInParams->hStream);
if (psStream != (PDBG_STREAM)IMG_NULL)
{
*pui32BytesCopied = ExtDBGDrivReadLF(psStream,
psInParams->ui32OutBufferSize,
psInParams->u.pui8OutBuffer);
return(IMG_TRUE);
}
else
{
/* invalid SID */
*pui32BytesCopied = 0;
return(IMG_FALSE);
}
}
