SGX-KM Initial SGX driver integration for 2.6.35 kernel.

This is the first version of SGX driver integration to ensure UI
boot-up. Power management and hwmod modifications will be added
as patches.

Change-Id: If71e6cd651a53f4809e7b978b693cb7d1a89178d
Signed-off-by: Hemant Hariyani <hemanthariyani@ti.com>

1 files changed, 2012 insertions, 0 deletions

diff --git a/drivers/gpu/pvr/deviceclass.c b/drivers/gpu/pvr/deviceclass.c
new file mode 100644
index 0000000..869253b
--- /dev/null
+++ b/drivers/gpu/pvr/deviceclass.c
@@ -0,0 +1,2012 @@
+/**********************************************************************
+ *
+ * Copyright(c) 2008 Imagination Technologies Ltd. All rights reserved.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope it will be useful but, except 
+ * as otherwise stated in writing, without any warranty; without even the 
+ * implied warranty of merchantability or fitness for a particular purpose. 
+ * See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * Imagination Technologies Ltd. <gpl-support@imgtec.com>
+ * Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK 
+ *
+ ******************************************************************************/
+
+#include "services_headers.h"
+#include "buffer_manager.h"
+#include "kernelbuffer.h"
+#include "kerneldisplay.h"
+#include "pvr_bridge_km.h"
+#include "pdump_km.h"
+#include "deviceid.h"
+
+#include "lists.h"
+
+PVRSRV_ERROR AllocateDeviceID(SYS_DATA *psSysData, IMG_UINT32 *pui32DevID);
+PVRSRV_ERROR FreeDeviceID(SYS_DATA *psSysData, IMG_UINT32 ui32DevID);
+
+#if defined(SUPPORT_MISR_IN_THREAD)
+void OSVSyncMISR(IMG_HANDLE, IMG_BOOL);
+#endif
+
+#if defined(SUPPORT_CUSTOM_SWAP_OPERATIONS)
+IMG_VOID PVRSRVFreeCommandCompletePacketKM(IMG_HANDLE	hCmdCookie,
+										   IMG_BOOL		bScheduleMISR);
+#endif
+typedef struct PVRSRV_DC_SRV2DISP_KMJTABLE_TAG *PPVRSRV_DC_SRV2DISP_KMJTABLE;
+
+typedef struct PVRSRV_DC_BUFFER_TAG
+{
+	
+	PVRSRV_DEVICECLASS_BUFFER sDeviceClassBuffer;
+
+	struct PVRSRV_DISPLAYCLASS_INFO_TAG *psDCInfo;
+	struct PVRSRV_DC_SWAPCHAIN_TAG *psSwapChain;
+} PVRSRV_DC_BUFFER;
+
+typedef struct PVRSRV_DC_SWAPCHAIN_TAG
+{
+	IMG_HANDLE							hExtSwapChain;
+	IMG_UINT32							ui32SwapChainID;
+	IMG_UINT32							ui32RefCount;
+	IMG_UINT32							ui32Flags;
+	PVRSRV_QUEUE_INFO					*psQueue;
+	PVRSRV_DC_BUFFER					asBuffer[PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS];
+	IMG_UINT32							ui32BufferCount;
+	PVRSRV_DC_BUFFER					*psLastFlipBuffer;
+	IMG_UINT32							ui32MinSwapInterval;
+	IMG_UINT32							ui32MaxSwapInterval;
+	struct PVRSRV_DISPLAYCLASS_INFO_TAG *psDCInfo;
+	struct PVRSRV_DC_SWAPCHAIN_TAG		*psNext;
+} PVRSRV_DC_SWAPCHAIN;
+
+
+typedef struct PVRSRV_DC_SWAPCHAIN_REF_TAG
+{
+	struct PVRSRV_DC_SWAPCHAIN_TAG		*psSwapChain;
+	IMG_HANDLE							hResItem;	
+} PVRSRV_DC_SWAPCHAIN_REF;
+
+
+typedef struct PVRSRV_DISPLAYCLASS_INFO_TAG
+{
+	IMG_UINT32 							ui32RefCount;
+	IMG_UINT32							ui32DeviceID;
+	IMG_HANDLE							hExtDevice;
+	PPVRSRV_DC_SRV2DISP_KMJTABLE		psFuncTable;
+	IMG_HANDLE							hDevMemContext;
+	PVRSRV_DC_BUFFER 					sSystemBuffer;
+	struct PVRSRV_DC_SWAPCHAIN_TAG		*psDCSwapChainShared;
+} PVRSRV_DISPLAYCLASS_INFO;
+
+
+typedef struct PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO_TAG
+{
+	PVRSRV_DISPLAYCLASS_INFO			*psDCInfo;
+	PRESMAN_ITEM						hResItem;
+} PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO;
+
+
+typedef struct PVRSRV_BC_SRV2BUFFER_KMJTABLE_TAG *PPVRSRV_BC_SRV2BUFFER_KMJTABLE;
+
+typedef struct PVRSRV_BC_BUFFER_TAG
+{
+	
+	PVRSRV_DEVICECLASS_BUFFER sDeviceClassBuffer;
+
+	struct PVRSRV_BUFFERCLASS_INFO_TAG *psBCInfo;
+} PVRSRV_BC_BUFFER;
+
+
+typedef struct PVRSRV_BUFFERCLASS_INFO_TAG
+{
+	IMG_UINT32 							ui32RefCount;
+	IMG_UINT32							ui32DeviceID;
+	IMG_HANDLE							hExtDevice;
+	PPVRSRV_BC_SRV2BUFFER_KMJTABLE		psFuncTable;
+	IMG_HANDLE							hDevMemContext;
+	
+	IMG_UINT32							ui32BufferCount;
+	PVRSRV_BC_BUFFER 					*psBuffer;
+
+} PVRSRV_BUFFERCLASS_INFO;
+
+
+typedef struct PVRSRV_BUFFERCLASS_PERCONTEXT_INFO_TAG
+{
+	PVRSRV_BUFFERCLASS_INFO				*psBCInfo;
+	IMG_HANDLE							hResItem;
+} PVRSRV_BUFFERCLASS_PERCONTEXT_INFO;
+
+
+static PVRSRV_DISPLAYCLASS_INFO* DCDeviceHandleToDCInfo (IMG_HANDLE hDeviceKM)
+{
+	PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *psDCPerContextInfo;
+
+	psDCPerContextInfo = (PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *)hDeviceKM;
+
+	return psDCPerContextInfo->psDCInfo;
+}
+
+
+static PVRSRV_BUFFERCLASS_INFO* BCDeviceHandleToBCInfo (IMG_HANDLE hDeviceKM)
+{
+	PVRSRV_BUFFERCLASS_PERCONTEXT_INFO *psBCPerContextInfo;
+
+	psBCPerContextInfo = (PVRSRV_BUFFERCLASS_PERCONTEXT_INFO *)hDeviceKM;
+
+	return psBCPerContextInfo->psBCInfo;
+}
+
+static IMG_VOID PVRSRVEnumerateDCKM_ForEachVaCb(PVRSRV_DEVICE_NODE *psDeviceNode, va_list va)
+{
+	IMG_UINT *pui32DevCount;
+	IMG_UINT32 **ppui32DevID;
+	PVRSRV_DEVICE_CLASS peDeviceClass;
+
+	pui32DevCount = va_arg(va, IMG_UINT*);
+	ppui32DevID = va_arg(va, IMG_UINT32**);
+	peDeviceClass = va_arg(va, PVRSRV_DEVICE_CLASS);
+
+	if	((psDeviceNode->sDevId.eDeviceClass == peDeviceClass)
+	&&	(psDeviceNode->sDevId.eDeviceType == PVRSRV_DEVICE_TYPE_EXT))
+	{
+		(*pui32DevCount)++;
+		if(*ppui32DevID)
+		{
+			*(*ppui32DevID)++ = psDeviceNode->sDevId.ui32DeviceIndex;
+		}
+	}
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVEnumerateDCKM (PVRSRV_DEVICE_CLASS DeviceClass,
+								  IMG_UINT32 *pui32DevCount,
+								  IMG_UINT32 *pui32DevID )
+{
+	
+	IMG_UINT			ui32DevCount = 0;
+	SYS_DATA 			*psSysData;
+
+	SysAcquireData(&psSysData);
+
+	
+	List_PVRSRV_DEVICE_NODE_ForEach_va(psSysData->psDeviceNodeList,
+										&PVRSRVEnumerateDCKM_ForEachVaCb,
+										&ui32DevCount,
+										&pui32DevID,
+										DeviceClass);
+
+	if(pui32DevCount)
+	{
+		*pui32DevCount = ui32DevCount;
+	}
+	else if(pui32DevID == IMG_NULL)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVEnumerateDCKM: Invalid parameters"));
+		return (PVRSRV_ERROR_INVALID_PARAMS);
+	}
+
+	return PVRSRV_OK;
+}
+
+
+static
+PVRSRV_ERROR PVRSRVRegisterDCDeviceKM (PVRSRV_DC_SRV2DISP_KMJTABLE *psFuncTable,
+									   IMG_UINT32 *pui32DeviceID)
+{
+	PVRSRV_DISPLAYCLASS_INFO 	*psDCInfo = IMG_NULL;
+	PVRSRV_DEVICE_NODE			*psDeviceNode;
+	SYS_DATA					*psSysData;
+
+	
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+	SysAcquireData(&psSysData);
+
+	
+
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(*psDCInfo),
+					 (IMG_VOID **)&psDCInfo, IMG_NULL,
+					 "Display Class Info") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterDCDeviceKM: Failed psDCInfo alloc"));
+		return PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+	OSMemSet (psDCInfo, 0, sizeof(*psDCInfo));
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(PVRSRV_DC_SRV2DISP_KMJTABLE),
+					 (IMG_VOID **)&psDCInfo->psFuncTable, IMG_NULL,
+					 "Function table for SRVKM->DISPLAY") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterDCDeviceKM: Failed psFuncTable alloc"));
+		goto ErrorExit;
+	}
+	OSMemSet (psDCInfo->psFuncTable, 0, sizeof(PVRSRV_DC_SRV2DISP_KMJTABLE));
+
+	
+	*psDCInfo->psFuncTable = *psFuncTable;
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(PVRSRV_DEVICE_NODE),
+					 (IMG_VOID **)&psDeviceNode, IMG_NULL,
+					 "Device Node") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterDCDeviceKM: Failed psDeviceNode alloc"));
+		goto ErrorExit;
+	}
+	OSMemSet (psDeviceNode, 0, sizeof(PVRSRV_DEVICE_NODE));
+
+	psDeviceNode->pvDevice = (IMG_VOID*)psDCInfo;
+	psDeviceNode->ui32pvDeviceSize = sizeof(*psDCInfo);
+	psDeviceNode->ui32RefCount = 1;
+	psDeviceNode->sDevId.eDeviceType = PVRSRV_DEVICE_TYPE_EXT;
+	psDeviceNode->sDevId.eDeviceClass = PVRSRV_DEVICE_CLASS_DISPLAY;
+	psDeviceNode->psSysData = psSysData;
+
+	
+	if (AllocateDeviceID(psSysData, &psDeviceNode->sDevId.ui32DeviceIndex) != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterBCDeviceKM: Failed to allocate Device ID"));
+		goto ErrorExit;
+	}
+	psDCInfo->ui32DeviceID = psDeviceNode->sDevId.ui32DeviceIndex;
+	if (pui32DeviceID)
+	{
+		*pui32DeviceID = psDeviceNode->sDevId.ui32DeviceIndex;
+	}
+
+	
+	SysRegisterExternalDevice(psDeviceNode);
+
+	
+	List_PVRSRV_DEVICE_NODE_Insert(&psSysData->psDeviceNodeList, psDeviceNode);
+
+	return PVRSRV_OK;
+
+ErrorExit:
+
+	if(psDCInfo->psFuncTable)
+	{
+		OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DC_SRV2DISP_KMJTABLE), psDCInfo->psFuncTable, IMG_NULL);
+		psDCInfo->psFuncTable = IMG_NULL;
+	}
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DISPLAYCLASS_INFO), psDCInfo, IMG_NULL);
+	
+
+	return PVRSRV_ERROR_OUT_OF_MEMORY;
+}
+
+static PVRSRV_ERROR PVRSRVRemoveDCDeviceKM(IMG_UINT32 ui32DevIndex)
+{
+	SYS_DATA					*psSysData;
+	PVRSRV_DEVICE_NODE			*psDeviceNode;
+	PVRSRV_DISPLAYCLASS_INFO	*psDCInfo;
+
+	SysAcquireData(&psSysData);
+
+	
+	psDeviceNode = (PVRSRV_DEVICE_NODE*)
+		List_PVRSRV_DEVICE_NODE_Any_va(psSysData->psDeviceNodeList,
+									   &MatchDeviceKM_AnyVaCb,
+									   ui32DevIndex,
+									   IMG_FALSE,
+									   PVRSRV_DEVICE_CLASS_DISPLAY);
+	if (!psDeviceNode)
+	{
+		
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRemoveDCDeviceKM: requested device %d not present", ui32DevIndex));
+		return PVRSRV_ERROR_NO_DEVICENODE_FOUND;
+	}
+
+	
+	psDCInfo = (PVRSRV_DISPLAYCLASS_INFO*)psDeviceNode->pvDevice;
+
+	
+
+
+	if(psDCInfo->ui32RefCount == 0)
+	{
+		
+
+		List_PVRSRV_DEVICE_NODE_Remove(psDeviceNode);
+
+		
+		SysRemoveExternalDevice(psDeviceNode);
+
+		
+
+
+		PVR_ASSERT(psDCInfo->ui32RefCount == 0);
+		(IMG_VOID)FreeDeviceID(psSysData, ui32DevIndex);
+		(IMG_VOID)OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DC_SRV2DISP_KMJTABLE), psDCInfo->psFuncTable, IMG_NULL);
+		psDCInfo->psFuncTable = IMG_NULL;
+		(IMG_VOID)OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DISPLAYCLASS_INFO), psDCInfo, IMG_NULL);
+		
+		(IMG_VOID)OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DEVICE_NODE), psDeviceNode, IMG_NULL);
+		
+	}
+	else
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRemoveDCDeviceKM: failed as %d Services DC API connections are still open", psDCInfo->ui32RefCount));
+		return PVRSRV_ERROR_UNABLE_TO_REMOVE_DEVICE;
+	}
+
+	return PVRSRV_OK;
+}
+
+
+static
+PVRSRV_ERROR PVRSRVRegisterBCDeviceKM (PVRSRV_BC_SRV2BUFFER_KMJTABLE *psFuncTable,
+									   IMG_UINT32	*pui32DeviceID)
+{
+	PVRSRV_BUFFERCLASS_INFO	*psBCInfo = IMG_NULL;
+	PVRSRV_DEVICE_NODE		*psDeviceNode;
+	SYS_DATA				*psSysData;
+	
+
+
+
+
+
+
+
+
+
+
+
+
+
+	SysAcquireData(&psSysData);
+
+	
+
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(*psBCInfo),
+					 (IMG_VOID **)&psBCInfo, IMG_NULL,
+					 "Buffer Class Info") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterBCDeviceKM: Failed psBCInfo alloc"));
+		return PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+	OSMemSet (psBCInfo, 0, sizeof(*psBCInfo));
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(PVRSRV_BC_SRV2BUFFER_KMJTABLE),
+					 (IMG_VOID **)&psBCInfo->psFuncTable, IMG_NULL,
+					 "Function table for SRVKM->BUFFER") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterBCDeviceKM: Failed psFuncTable alloc"));
+		goto ErrorExit;
+	}
+	OSMemSet (psBCInfo->psFuncTable, 0, sizeof(PVRSRV_BC_SRV2BUFFER_KMJTABLE));
+
+	
+	*psBCInfo->psFuncTable = *psFuncTable;
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(PVRSRV_DEVICE_NODE),
+					 (IMG_VOID **)&psDeviceNode, IMG_NULL,
+					 "Device Node") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterBCDeviceKM: Failed psDeviceNode alloc"));
+		goto ErrorExit;
+	}
+	OSMemSet (psDeviceNode, 0, sizeof(PVRSRV_DEVICE_NODE));
+
+	psDeviceNode->pvDevice = (IMG_VOID*)psBCInfo;
+	psDeviceNode->ui32pvDeviceSize = sizeof(*psBCInfo);
+	psDeviceNode->ui32RefCount = 1;
+	psDeviceNode->sDevId.eDeviceType = PVRSRV_DEVICE_TYPE_EXT;
+	psDeviceNode->sDevId.eDeviceClass = PVRSRV_DEVICE_CLASS_BUFFER;
+	psDeviceNode->psSysData = psSysData;
+
+	
+	if (AllocateDeviceID(psSysData, &psDeviceNode->sDevId.ui32DeviceIndex) != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterBCDeviceKM: Failed to allocate Device ID"));
+		goto ErrorExit;
+	}
+	psBCInfo->ui32DeviceID = psDeviceNode->sDevId.ui32DeviceIndex;
+	if (pui32DeviceID)
+	{
+		*pui32DeviceID = psDeviceNode->sDevId.ui32DeviceIndex;
+	}
+
+	
+	List_PVRSRV_DEVICE_NODE_Insert(&psSysData->psDeviceNodeList, psDeviceNode);
+
+	return PVRSRV_OK;
+
+ErrorExit:
+
+	if(psBCInfo->psFuncTable)
+	{
+		OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PPVRSRV_BC_SRV2BUFFER_KMJTABLE), psBCInfo->psFuncTable, IMG_NULL);
+		psBCInfo->psFuncTable = IMG_NULL;
+	}
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_BUFFERCLASS_INFO), psBCInfo, IMG_NULL);
+	
+
+	return PVRSRV_ERROR_OUT_OF_MEMORY;
+}
+
+
+static PVRSRV_ERROR PVRSRVRemoveBCDeviceKM(IMG_UINT32 ui32DevIndex)
+{
+	SYS_DATA					*psSysData;
+	PVRSRV_DEVICE_NODE			*psDevNode;
+	PVRSRV_BUFFERCLASS_INFO		*psBCInfo;
+
+	SysAcquireData(&psSysData);
+
+	
+	psDevNode = (PVRSRV_DEVICE_NODE*)
+		List_PVRSRV_DEVICE_NODE_Any_va(psSysData->psDeviceNodeList,
+									   &MatchDeviceKM_AnyVaCb,
+									   ui32DevIndex,
+									   IMG_FALSE,
+									   PVRSRV_DEVICE_CLASS_BUFFER);
+
+	if (!psDevNode)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRemoveBCDeviceKM: requested device %d not present", ui32DevIndex));
+		return PVRSRV_ERROR_NO_DEVICENODE_FOUND;
+	}
+
+	
+	
+	psBCInfo = (PVRSRV_BUFFERCLASS_INFO*)psDevNode->pvDevice;
+
+	
+
+
+	if(psBCInfo->ui32RefCount == 0)
+	{
+		
+
+		List_PVRSRV_DEVICE_NODE_Remove(psDevNode);
+
+		
+
+
+		(IMG_VOID)FreeDeviceID(psSysData, ui32DevIndex);
+		
+		
+		(IMG_VOID)OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_BC_SRV2BUFFER_KMJTABLE), psBCInfo->psFuncTable, IMG_NULL);
+		psBCInfo->psFuncTable = IMG_NULL;
+		(IMG_VOID)OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_BUFFERCLASS_INFO), psBCInfo, IMG_NULL);
+		
+		(IMG_VOID)OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DEVICE_NODE), psDevNode, IMG_NULL);
+		
+	}
+	else
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRemoveBCDeviceKM: failed as %d Services BC API connections are still open", psBCInfo->ui32RefCount));
+		return PVRSRV_ERROR_UNABLE_TO_REMOVE_DEVICE;
+	}
+
+	return PVRSRV_OK;
+}
+
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVCloseDCDeviceKM (IMG_HANDLE	hDeviceKM,
+									IMG_BOOL	bResManCallback)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *psDCPerContextInfo;
+
+	PVR_UNREFERENCED_PARAMETER(bResManCallback);
+
+	psDCPerContextInfo = (PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *)hDeviceKM;
+
+	
+	eError = ResManFreeResByPtr(psDCPerContextInfo->hResItem);
+
+	return eError;
+}
+
+
+static PVRSRV_ERROR CloseDCDeviceCallBack(IMG_PVOID		pvParam,
+										  IMG_UINT32	ui32Param)
+{
+	PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *psDCPerContextInfo;
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+
+	PVR_UNREFERENCED_PARAMETER(ui32Param);
+
+	psDCPerContextInfo = (PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *)pvParam;
+	psDCInfo = psDCPerContextInfo->psDCInfo;
+
+	psDCInfo->ui32RefCount--;
+	if(psDCInfo->ui32RefCount == 0)
+	{
+		
+		psDCInfo->psFuncTable->pfnCloseDCDevice(psDCInfo->hExtDevice);
+
+		if (--psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount == 0)
+		{
+			PVRSRVFreeSyncInfoKM(psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo);
+		}
+
+		psDCInfo->hDevMemContext = IMG_NULL;
+		psDCInfo->hExtDevice = IMG_NULL;
+	}
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO), psDCPerContextInfo, IMG_NULL);
+	
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVOpenDCDeviceKM (PVRSRV_PER_PROCESS_DATA	*psPerProc,
+								   IMG_UINT32				ui32DeviceID,
+								   IMG_HANDLE				hDevCookie,
+								   IMG_HANDLE				*phDeviceKM)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DISPLAYCLASS_PERCONTEXT_INFO *psDCPerContextInfo;
+	PVRSRV_DEVICE_NODE	*psDeviceNode;
+	SYS_DATA			*psSysData;
+	PVRSRV_ERROR eError;
+
+	if(!phDeviceKM || !hDevCookie)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenDCDeviceKM: Invalid params"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	SysAcquireData(&psSysData);
+
+	
+	psDeviceNode = (PVRSRV_DEVICE_NODE*)
+			List_PVRSRV_DEVICE_NODE_Any_va(psSysData->psDeviceNodeList,
+										   &MatchDeviceKM_AnyVaCb,
+										   ui32DeviceID,
+										   IMG_FALSE,
+										   PVRSRV_DEVICE_CLASS_DISPLAY);
+	if (!psDeviceNode)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenDCDeviceKM: no devnode matching index %d", ui32DeviceID));
+		return PVRSRV_ERROR_NO_DEVICENODE_FOUND;
+	}
+	psDCInfo = (PVRSRV_DISPLAYCLASS_INFO*)psDeviceNode->pvDevice;
+
+	
+
+
+	if(OSAllocMem(PVRSRV_OS_PAGEABLE_HEAP,
+				  sizeof(*psDCPerContextInfo),
+				  (IMG_VOID **)&psDCPerContextInfo, IMG_NULL,
+				  "Display Class per Context Info") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenDCDeviceKM: Failed psDCPerContextInfo alloc"));
+		return PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+	OSMemSet(psDCPerContextInfo, 0, sizeof(*psDCPerContextInfo));
+
+	if(psDCInfo->ui32RefCount++ == 0)
+	{
+
+		psDeviceNode = (PVRSRV_DEVICE_NODE *)hDevCookie;
+
+		
+		psDCInfo->hDevMemContext = (IMG_HANDLE)psDeviceNode->sDevMemoryInfo.pBMKernelContext;
+
+		
+		eError = PVRSRVAllocSyncInfoKM(IMG_NULL,
+									(IMG_HANDLE)psDeviceNode->sDevMemoryInfo.pBMKernelContext,
+									&psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo);
+		if(eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenDCDeviceKM: Failed sync info alloc"));
+			psDCInfo->ui32RefCount--;
+			return eError;
+		}
+
+		
+		eError = psDCInfo->psFuncTable->pfnOpenDCDevice(ui32DeviceID,
+                                                        	&psDCInfo->hExtDevice,
+								(PVRSRV_SYNC_DATA*)psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo->psSyncDataMemInfoKM->pvLinAddrKM);
+		if(eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenDCDeviceKM: Failed to open external DC device"));
+			psDCInfo->ui32RefCount--;
+			PVRSRVFreeSyncInfoKM(psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo);
+			return eError;
+		}
+
+		psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount++;
+	}
+
+	psDCPerContextInfo->psDCInfo = psDCInfo;
+	psDCPerContextInfo->hResItem = ResManRegisterRes(psPerProc->hResManContext,
+													 RESMAN_TYPE_DISPLAYCLASS_DEVICE,
+													 psDCPerContextInfo,
+													 0,
+													 &CloseDCDeviceCallBack);
+
+	
+	*phDeviceKM = (IMG_HANDLE)psDCPerContextInfo;
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVEnumDCFormatsKM (IMG_HANDLE hDeviceKM,
+									IMG_UINT32 *pui32Count,
+									DISPLAY_FORMAT *psFormat)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+
+	if(!hDeviceKM || !pui32Count || !psFormat)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVEnumDCFormatsKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+
+	
+	return psDCInfo->psFuncTable->pfnEnumDCFormats(psDCInfo->hExtDevice, pui32Count, psFormat);
+}
+
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVEnumDCDimsKM (IMG_HANDLE hDeviceKM,
+								 DISPLAY_FORMAT *psFormat,
+								 IMG_UINT32 *pui32Count,
+								 DISPLAY_DIMS *psDim)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+
+	if(!hDeviceKM || !pui32Count || !psFormat)	
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVEnumDCDimsKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+
+	
+	return psDCInfo->psFuncTable->pfnEnumDCDims(psDCInfo->hExtDevice, psFormat, pui32Count, psDim);
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVGetDCSystemBufferKM (IMG_HANDLE hDeviceKM,
+										IMG_HANDLE *phBuffer)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	IMG_HANDLE hExtBuffer;
+
+	if(!hDeviceKM || !phBuffer)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetDCSystemBufferKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+
+	
+	eError = psDCInfo->psFuncTable->pfnGetDCSystemBuffer(psDCInfo->hExtDevice, &hExtBuffer);
+	if(eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetDCSystemBufferKM: Failed to get valid buffer handle from external driver"));
+		return eError;
+	}
+
+	
+	psDCInfo->sSystemBuffer.sDeviceClassBuffer.pfnGetBufferAddr = psDCInfo->psFuncTable->pfnGetBufferAddr;
+	psDCInfo->sSystemBuffer.sDeviceClassBuffer.hDevMemContext = psDCInfo->hDevMemContext;
+	psDCInfo->sSystemBuffer.sDeviceClassBuffer.hExtDevice = psDCInfo->hExtDevice;
+	psDCInfo->sSystemBuffer.sDeviceClassBuffer.hExtBuffer = hExtBuffer;
+
+	psDCInfo->sSystemBuffer.psDCInfo = psDCInfo;
+
+	
+	*phBuffer = (IMG_HANDLE)&(psDCInfo->sSystemBuffer);
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVGetDCInfoKM (IMG_HANDLE hDeviceKM,
+								DISPLAY_INFO *psDisplayInfo)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_ERROR eError;
+
+	if(!hDeviceKM || !psDisplayInfo)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetDCInfoKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+
+	
+	eError = psDCInfo->psFuncTable->pfnGetDCInfo(psDCInfo->hExtDevice, psDisplayInfo);
+	if (eError != PVRSRV_OK)
+	{
+		return eError;
+	}
+
+	if (psDisplayInfo->ui32MaxSwapChainBuffers > PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS)
+	{
+		psDisplayInfo->ui32MaxSwapChainBuffers = PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS;
+	}
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVDestroyDCSwapChainKM(IMG_HANDLE hSwapChainRef)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_DC_SWAPCHAIN_REF *psSwapChainRef;
+
+	if(!hSwapChainRef)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVDestroyDCSwapChainKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psSwapChainRef = hSwapChainRef;
+
+	eError = ResManFreeResByPtr(psSwapChainRef->hResItem);
+
+	return eError;
+}
+
+
+static PVRSRV_ERROR DestroyDCSwapChain(PVRSRV_DC_SWAPCHAIN *psSwapChain)
+{
+	PVRSRV_ERROR				eError;
+	PVRSRV_DISPLAYCLASS_INFO	*psDCInfo = psSwapChain->psDCInfo;
+	IMG_UINT32 i;
+
+
+	
+	if( psDCInfo->psDCSwapChainShared )
+	{
+		if( psDCInfo->psDCSwapChainShared == psSwapChain )
+		{
+			psDCInfo->psDCSwapChainShared = psSwapChain->psNext;
+		}
+		else 
+		{
+			PVRSRV_DC_SWAPCHAIN *psCurrentSwapChain;
+			psCurrentSwapChain = psDCInfo->psDCSwapChainShared; 		
+			while( psCurrentSwapChain->psNext )
+			{
+				if( psCurrentSwapChain->psNext != psSwapChain ) 
+				{
+					psCurrentSwapChain = psCurrentSwapChain->psNext;
+					continue;
+				}
+				psCurrentSwapChain->psNext = psSwapChain->psNext;
+				break;				
+			}
+		}
+	}
+
+	
+	PVRSRVDestroyCommandQueueKM(psSwapChain->psQueue);
+
+	
+	eError = psDCInfo->psFuncTable->pfnDestroyDCSwapChain(psDCInfo->hExtDevice,
+															psSwapChain->hExtSwapChain);
+
+	if (eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"DestroyDCSwapChainCallBack: Failed to destroy DC swap chain"));
+		return eError;
+	}
+
+	
+	for(i=0; i<psSwapChain->ui32BufferCount; i++)
+	{
+		if(psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo)
+		{
+			if (--psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount == 0)
+			{
+				PVRSRVFreeSyncInfoKM(psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo);
+			}
+		}
+	}
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DC_SWAPCHAIN), psSwapChain, IMG_NULL);
+	
+
+	return eError;
+}
+
+
+static PVRSRV_ERROR DestroyDCSwapChainRefCallBack(IMG_PVOID pvParam, IMG_UINT32 ui32Param)
+{
+	PVRSRV_DC_SWAPCHAIN_REF *psSwapChainRef = (PVRSRV_DC_SWAPCHAIN_REF *) pvParam;
+	PVRSRV_ERROR eError = PVRSRV_OK;
+
+	PVR_UNREFERENCED_PARAMETER(ui32Param);
+
+	if(--psSwapChainRef->psSwapChain->ui32RefCount == 0) 
+	{
+		eError = DestroyDCSwapChain(psSwapChainRef->psSwapChain);
+	}
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DC_SWAPCHAIN_REF), psSwapChainRef, IMG_NULL);
+	return eError;
+}
+
+static PVRSRV_DC_SWAPCHAIN* PVRSRVFindSharedDCSwapChainKM(PVRSRV_DISPLAYCLASS_INFO *psDCInfo,
+														 IMG_UINT32 ui32SwapChainID)
+{
+	PVRSRV_DC_SWAPCHAIN *psCurrentSwapChain;
+
+	for(psCurrentSwapChain = psDCInfo->psDCSwapChainShared; 
+		psCurrentSwapChain; 
+		psCurrentSwapChain = psCurrentSwapChain->psNext) 
+	{
+		if(psCurrentSwapChain->ui32SwapChainID == ui32SwapChainID)
+			return psCurrentSwapChain;
+	}
+	return IMG_NULL;
+}
+
+static PVRSRV_ERROR PVRSRVCreateDCSwapChainRefKM(PVRSRV_PER_PROCESS_DATA	*psPerProc,
+												 PVRSRV_DC_SWAPCHAIN 		*psSwapChain, 
+												 PVRSRV_DC_SWAPCHAIN_REF 	**ppsSwapChainRef)
+{
+	PVRSRV_DC_SWAPCHAIN_REF *psSwapChainRef = IMG_NULL;
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(PVRSRV_DC_SWAPCHAIN_REF),
+					 (IMG_VOID **)&psSwapChainRef, IMG_NULL,
+					 "Display Class Swapchain Reference") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainRefKM: Failed psSwapChainRef alloc"));
+		return  PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+	OSMemSet (psSwapChainRef, 0, sizeof(PVRSRV_DC_SWAPCHAIN_REF));
+
+	
+	psSwapChain->ui32RefCount++;
+
+	
+	psSwapChainRef->psSwapChain = psSwapChain;
+	psSwapChainRef->hResItem = ResManRegisterRes(psPerProc->hResManContext,
+												  RESMAN_TYPE_DISPLAYCLASS_SWAPCHAIN_REF,
+												  psSwapChainRef,
+												  0,
+												  &DestroyDCSwapChainRefCallBack);
+	*ppsSwapChainRef = psSwapChainRef;
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVCreateDCSwapChainKM (PVRSRV_PER_PROCESS_DATA	*psPerProc,
+										IMG_HANDLE				hDeviceKM,
+										IMG_UINT32				ui32Flags,
+										DISPLAY_SURF_ATTRIBUTES	*psDstSurfAttrib,
+										DISPLAY_SURF_ATTRIBUTES *psSrcSurfAttrib,
+										IMG_UINT32				ui32BufferCount,
+										IMG_UINT32				ui32OEMFlags,
+										IMG_HANDLE				*phSwapChainRef,
+										IMG_UINT32				*pui32SwapChainID)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain = IMG_NULL;
+	PVRSRV_DC_SWAPCHAIN_REF *psSwapChainRef = IMG_NULL;
+	PVRSRV_SYNC_DATA *apsSyncData[PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS];
+	PVRSRV_QUEUE_INFO *psQueue = IMG_NULL;
+	PVRSRV_ERROR eError;
+	IMG_UINT32 i;
+	DISPLAY_INFO sDisplayInfo;
+
+
+	if(!hDeviceKM
+	|| !psDstSurfAttrib
+	|| !psSrcSurfAttrib
+	|| !phSwapChainRef
+	|| !pui32SwapChainID)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	if (ui32BufferCount > PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Too many buffers"));
+		return PVRSRV_ERROR_TOOMANYBUFFERS;
+	}
+
+	if (ui32BufferCount < 2)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Too few buffers"));
+		return PVRSRV_ERROR_TOO_FEW_BUFFERS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+
+	if( ui32Flags & PVRSRV_CREATE_SWAPCHAIN_QUERY )
+	{
+		
+		psSwapChain = PVRSRVFindSharedDCSwapChainKM(psDCInfo, *pui32SwapChainID );
+		if( psSwapChain  ) 
+		{	
+					   
+			eError = PVRSRVCreateDCSwapChainRefKM(psPerProc, 
+												  psSwapChain, 
+												  &psSwapChainRef);
+			if( eError != PVRSRV_OK ) 
+			{
+				PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Couldn't create swap chain reference"));
+				return eError;
+			}
+
+			*phSwapChainRef = (IMG_HANDLE)psSwapChainRef;
+			return PVRSRV_OK;
+		}
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: No shared SwapChain found for query"));
+		return PVRSRV_ERROR_FLIP_CHAIN_EXISTS;		
+	}
+
+	
+	if(OSAllocMem( PVRSRV_OS_PAGEABLE_HEAP,
+					 sizeof(PVRSRV_DC_SWAPCHAIN),
+					 (IMG_VOID **)&psSwapChain, IMG_NULL,
+					 "Display Class Swapchain") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Failed psSwapChain alloc"));
+		eError = PVRSRV_ERROR_OUT_OF_MEMORY;
+		goto ErrorExit;
+	}
+	OSMemSet (psSwapChain, 0, sizeof(PVRSRV_DC_SWAPCHAIN));
+
+	
+	eError = PVRSRVCreateCommandQueueKM(1024, &psQueue);
+	if(eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Failed to create CmdQueue"));
+		goto ErrorExit;
+	}
+
+	
+	psSwapChain->psQueue = psQueue;
+
+	
+	for(i=0; i<ui32BufferCount; i++)
+	{
+		eError = PVRSRVAllocSyncInfoKM(IMG_NULL,
+										psDCInfo->hDevMemContext,
+										&psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo);
+		if(eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Failed to alloc syninfo for psSwapChain"));
+			goto ErrorExit;
+		}
+
+		psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount++;
+
+		
+		psSwapChain->asBuffer[i].sDeviceClassBuffer.pfnGetBufferAddr = psDCInfo->psFuncTable->pfnGetBufferAddr;
+		psSwapChain->asBuffer[i].sDeviceClassBuffer.hDevMemContext = psDCInfo->hDevMemContext;
+		psSwapChain->asBuffer[i].sDeviceClassBuffer.hExtDevice = psDCInfo->hExtDevice;
+
+		
+		psSwapChain->asBuffer[i].psDCInfo = psDCInfo;
+		psSwapChain->asBuffer[i].psSwapChain = psSwapChain;
+
+		
+		apsSyncData[i] = (PVRSRV_SYNC_DATA*)psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->psSyncDataMemInfoKM->pvLinAddrKM;
+	}
+
+	psSwapChain->ui32BufferCount = ui32BufferCount;
+	psSwapChain->psDCInfo = psDCInfo;
+
+#if defined(PDUMP)
+	PDUMPCOMMENT("Allocate DC swap chain (SwapChainID == %u, BufferCount == %u)",
+			*pui32SwapChainID,
+			ui32BufferCount);
+	PDUMPCOMMENT("  Src surface dimensions == %u x %u",
+			psSrcSurfAttrib->sDims.ui32Width,
+			psSrcSurfAttrib->sDims.ui32Height);
+	PDUMPCOMMENT("  Dst surface dimensions == %u x %u",
+			psDstSurfAttrib->sDims.ui32Width,
+			psDstSurfAttrib->sDims.ui32Height);
+#endif
+
+	eError = psDCInfo->psFuncTable->pfnGetDCInfo(psDCInfo->hExtDevice, &sDisplayInfo);
+	if (eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Failed to get DC info"));
+		return eError;
+	}
+	
+	psSwapChain->ui32MinSwapInterval = sDisplayInfo.ui32MinSwapInterval;
+	psSwapChain->ui32MaxSwapInterval = sDisplayInfo.ui32MaxSwapInterval;
+
+	
+	eError =  psDCInfo->psFuncTable->pfnCreateDCSwapChain(psDCInfo->hExtDevice,
+														ui32Flags,
+														psDstSurfAttrib,
+														psSrcSurfAttrib,
+														ui32BufferCount,
+														apsSyncData,
+														ui32OEMFlags,
+														&psSwapChain->hExtSwapChain,
+														&psSwapChain->ui32SwapChainID);
+	if(eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Failed to create 3rd party SwapChain"));
+		PDUMPCOMMENT("Swapchain allocation failed.");
+		goto ErrorExit;
+	}
+
+			   
+	eError = PVRSRVCreateDCSwapChainRefKM(psPerProc, 
+										  psSwapChain, 
+										  &psSwapChainRef);
+	if( eError != PVRSRV_OK ) 
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVCreateDCSwapChainKM: Couldn't create swap chain reference"));
+		PDUMPCOMMENT("Swapchain allocation failed.");
+		goto ErrorExit;
+	}
+
+	psSwapChain->ui32RefCount = 1;
+	psSwapChain->ui32Flags = ui32Flags;
+
+	
+	if( ui32Flags & PVRSRV_CREATE_SWAPCHAIN_SHARED )
+	{
+   		if(! psDCInfo->psDCSwapChainShared ) 
+		{
+			psDCInfo->psDCSwapChainShared = psSwapChain;
+		} 
+		else 
+		{	
+			PVRSRV_DC_SWAPCHAIN *psOldHead = psDCInfo->psDCSwapChainShared;
+			psDCInfo->psDCSwapChainShared = psSwapChain;
+			psSwapChain->psNext = psOldHead;
+		}
+	}
+
+	
+	*pui32SwapChainID = psSwapChain->ui32SwapChainID;
+
+	
+	*phSwapChainRef= (IMG_HANDLE)psSwapChainRef;
+
+	return eError;
+
+ErrorExit:
+
+	for(i=0; i<ui32BufferCount; i++)
+	{
+		if(psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo)
+		{
+			if (--psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount == 0)
+			{
+				PVRSRVFreeSyncInfoKM(psSwapChain->asBuffer[i].sDeviceClassBuffer.psKernelSyncInfo);
+			}
+		}
+	}
+
+	if(psQueue)
+	{
+		PVRSRVDestroyCommandQueueKM(psQueue);
+	}
+
+	if(psSwapChain)
+	{
+		OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_DC_SWAPCHAIN), psSwapChain, IMG_NULL);
+		
+	}
+
+	return eError;
+}
+
+
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVSetDCDstRectKM(IMG_HANDLE	hDeviceKM,
+								  IMG_HANDLE	hSwapChainRef,
+								  IMG_RECT		*psRect)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain;
+
+	if(!hDeviceKM || !hSwapChainRef)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSetDCDstRectKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+	psSwapChain = ((PVRSRV_DC_SWAPCHAIN_REF*)hSwapChainRef)->psSwapChain;
+
+	return psDCInfo->psFuncTable->pfnSetDCDstRect(psDCInfo->hExtDevice,
+													psSwapChain->hExtSwapChain,
+													psRect);
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVSetDCSrcRectKM(IMG_HANDLE	hDeviceKM,
+								  IMG_HANDLE	hSwapChainRef,
+								  IMG_RECT		*psRect)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain;
+
+	if(!hDeviceKM || !hSwapChainRef)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSetDCSrcRectKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+	psSwapChain = ((PVRSRV_DC_SWAPCHAIN_REF*)hSwapChainRef)->psSwapChain;
+
+	return psDCInfo->psFuncTable->pfnSetDCSrcRect(psDCInfo->hExtDevice,
+													psSwapChain->hExtSwapChain,
+													psRect);
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVSetDCDstColourKeyKM(IMG_HANDLE	hDeviceKM,
+									   IMG_HANDLE	hSwapChainRef,
+									   IMG_UINT32	ui32CKColour)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain;
+
+	if(!hDeviceKM || !hSwapChainRef)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSetDCDstColourKeyKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+	psSwapChain = ((PVRSRV_DC_SWAPCHAIN_REF*)hSwapChainRef)->psSwapChain;
+
+	return psDCInfo->psFuncTable->pfnSetDCDstColourKey(psDCInfo->hExtDevice,
+														psSwapChain->hExtSwapChain,
+														ui32CKColour);
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVSetDCSrcColourKeyKM(IMG_HANDLE	hDeviceKM,
+									   IMG_HANDLE	hSwapChainRef,
+									   IMG_UINT32	ui32CKColour)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain;
+
+	if(!hDeviceKM || !hSwapChainRef)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSetDCSrcColourKeyKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+	psSwapChain = ((PVRSRV_DC_SWAPCHAIN_REF*)hSwapChainRef)->psSwapChain;
+
+	return psDCInfo->psFuncTable->pfnSetDCSrcColourKey(psDCInfo->hExtDevice,
+														psSwapChain->hExtSwapChain,
+														ui32CKColour);
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVGetDCBuffersKM(IMG_HANDLE	hDeviceKM,
+								  IMG_HANDLE	hSwapChainRef,
+								  IMG_UINT32	*pui32BufferCount,
+								  IMG_HANDLE	*phBuffer)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain;
+	IMG_HANDLE ahExtBuffer[PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS];
+	PVRSRV_ERROR eError;
+	IMG_UINT32 i;
+
+	if(!hDeviceKM || !hSwapChainRef || !phBuffer)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetDCBuffersKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+	psSwapChain = ((PVRSRV_DC_SWAPCHAIN_REF*)hSwapChainRef)->psSwapChain;
+
+	
+	eError = psDCInfo->psFuncTable->pfnGetDCBuffers(psDCInfo->hExtDevice,
+													psSwapChain->hExtSwapChain,
+													pui32BufferCount,
+													ahExtBuffer);
+
+	PVR_ASSERT(*pui32BufferCount <= PVRSRV_MAX_DC_SWAPCHAIN_BUFFERS);
+
+	
+
+
+	for(i=0; i<*pui32BufferCount; i++)
+	{
+		psSwapChain->asBuffer[i].sDeviceClassBuffer.hExtBuffer = ahExtBuffer[i];
+		phBuffer[i] = (IMG_HANDLE)&psSwapChain->asBuffer[i];
+	}
+
+	return eError;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVSwapToDCBufferKM(IMG_HANDLE	hDeviceKM,
+									IMG_HANDLE	hBuffer,
+									IMG_UINT32	ui32SwapInterval,
+									IMG_HANDLE	hPrivateTag,
+									IMG_UINT32	ui32ClipRectCount,
+									IMG_RECT	*psClipRect)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_BUFFER *psBuffer;
+	PVRSRV_QUEUE_INFO *psQueue;
+	DISPLAYCLASS_FLIP_COMMAND *psFlipCmd;
+	IMG_UINT32 i;
+	IMG_BOOL bAddReferenceToLast = IMG_TRUE;
+	IMG_UINT16 ui16SwapCommandID = DC_FLIP_COMMAND;
+	IMG_UINT32 ui32NumSrcSyncs = 1;
+	PVRSRV_KERNEL_SYNC_INFO *apsSrcSync[2];
+	PVRSRV_COMMAND *psCommand;
+
+	if(!hDeviceKM || !hBuffer || !psClipRect)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCBufferKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+#if defined(SUPPORT_LMA)
+	eError = PVRSRVPowerLock(KERNEL_ID, IMG_FALSE);
+	if(eError != PVRSRV_OK)
+	{
+		return eError;
+	}
+#endif 
+
+	psBuffer = (PVRSRV_DC_BUFFER*)hBuffer;
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+
+	
+	if(ui32SwapInterval < psBuffer->psSwapChain->ui32MinSwapInterval ||
+		ui32SwapInterval > psBuffer->psSwapChain->ui32MaxSwapInterval)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCBufferKM: Invalid swap interval. Requested %u, Allowed range %u-%u",
+				 ui32SwapInterval, psBuffer->psSwapChain->ui32MinSwapInterval, psBuffer->psSwapChain->ui32MaxSwapInterval));
+		return PVRSRV_ERROR_INVALID_SWAPINTERVAL;
+	}
+
+#if defined(SUPPORT_CUSTOM_SWAP_OPERATIONS)
+
+	if(psDCInfo->psFuncTable->pfnQuerySwapCommandID != IMG_NULL)
+	{
+		psDCInfo->psFuncTable->pfnQuerySwapCommandID(psDCInfo->hExtDevice,
+													 psBuffer->psSwapChain->hExtSwapChain,
+													 psBuffer->sDeviceClassBuffer.hExtBuffer, 
+													 hPrivateTag, 
+													 &ui16SwapCommandID,
+													 &bAddReferenceToLast);
+		
+	}
+
+#endif
+
+	
+	psQueue = psBuffer->psSwapChain->psQueue;
+
+	
+	apsSrcSync[0] = psBuffer->sDeviceClassBuffer.psKernelSyncInfo;
+	
+
+
+	if(bAddReferenceToLast && psBuffer->psSwapChain->psLastFlipBuffer &&
+		psBuffer != psBuffer->psSwapChain->psLastFlipBuffer)
+	{
+		apsSrcSync[1] = psBuffer->psSwapChain->psLastFlipBuffer->sDeviceClassBuffer.psKernelSyncInfo;
+		
+
+
+		ui32NumSrcSyncs++;
+	}
+
+	
+	eError = PVRSRVInsertCommandKM (psQueue,
+									&psCommand,
+									psDCInfo->ui32DeviceID,
+									ui16SwapCommandID,
+									0,
+									IMG_NULL,
+									ui32NumSrcSyncs,
+									apsSrcSync,
+									sizeof(DISPLAYCLASS_FLIP_COMMAND) + (sizeof(IMG_RECT) * ui32ClipRectCount));
+	if(eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCBufferKM: Failed to get space in queue"));
+		goto Exit;
+	}
+
+	
+	psFlipCmd = (DISPLAYCLASS_FLIP_COMMAND*)psCommand->pvData;
+
+	
+	psFlipCmd->hExtDevice = psDCInfo->hExtDevice;
+
+	
+	psFlipCmd->hExtSwapChain = psBuffer->psSwapChain->hExtSwapChain;
+
+	
+	psFlipCmd->hExtBuffer = psBuffer->sDeviceClassBuffer.hExtBuffer;
+
+	
+	psFlipCmd->hPrivateTag = hPrivateTag;
+
+	
+	psFlipCmd->ui32ClipRectCount = ui32ClipRectCount;
+	
+	psFlipCmd->psClipRect = (IMG_RECT*)((IMG_UINT8*)psFlipCmd + sizeof(DISPLAYCLASS_FLIP_COMMAND));	
+	
+	for(i=0; i<ui32ClipRectCount; i++)
+	{
+		psFlipCmd->psClipRect[i] = psClipRect[i];
+	}
+
+	
+	psFlipCmd->ui32SwapInterval = ui32SwapInterval;
+
+	
+	eError = PVRSRVSubmitCommandKM (psQueue, psCommand);
+	if (eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCBufferKM: Failed to submit command"));
+		goto Exit;
+	}
+
+	
+
+
+
+
+
+
+
+	 
+	LOOP_UNTIL_TIMEOUT(MAX_HW_TIME_US)
+	{
+		if(PVRSRVProcessQueues(KERNEL_ID, IMG_FALSE) != PVRSRV_ERROR_PROCESSING_BLOCKED)
+		{
+			goto ProcessedQueues;
+		}
+		OSWaitus(MAX_HW_TIME_US/WAIT_TRY_COUNT);
+	} END_LOOP_UNTIL_TIMEOUT();
+
+	PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCBufferKM: Failed to process queues"));
+
+	eError = PVRSRV_ERROR_FAILED_TO_PROCESS_QUEUE;
+	goto Exit;
+
+ProcessedQueues:
+	
+	psBuffer->psSwapChain->psLastFlipBuffer = psBuffer;
+
+Exit:
+
+	if(eError == PVRSRV_ERROR_CANNOT_GET_QUEUE_SPACE)
+	{
+		eError = PVRSRV_ERROR_RETRY;
+	}
+
+#if defined(SUPPORT_LMA)
+	PVRSRVPowerUnlock(KERNEL_ID);
+#endif
+	return eError;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVSwapToDCSystemKM(IMG_HANDLE	hDeviceKM,
+									IMG_HANDLE	hSwapChainRef)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_QUEUE_INFO *psQueue;
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	PVRSRV_DC_SWAPCHAIN *psSwapChain;
+	PVRSRV_DC_SWAPCHAIN_REF *psSwapChainRef;
+	DISPLAYCLASS_FLIP_COMMAND *psFlipCmd;
+	IMG_UINT32 ui32NumSrcSyncs = 1;
+	PVRSRV_KERNEL_SYNC_INFO *apsSrcSync[2];
+	PVRSRV_COMMAND *psCommand;
+	IMG_BOOL bAddReferenceToLast = IMG_TRUE;
+	IMG_UINT16 ui16SwapCommandID = DC_FLIP_COMMAND;
+
+	if(!hDeviceKM || !hSwapChainRef)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCSystemKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+#if defined(SUPPORT_LMA)
+	eError = PVRSRVPowerLock(KERNEL_ID, IMG_FALSE);
+	if(eError != PVRSRV_OK)
+	{
+		return eError;
+	}
+#endif 
+
+	psDCInfo = DCDeviceHandleToDCInfo(hDeviceKM);
+	psSwapChainRef = (PVRSRV_DC_SWAPCHAIN_REF*)hSwapChainRef;
+	psSwapChain = psSwapChainRef->psSwapChain;
+
+	
+	psQueue = psSwapChain->psQueue;
+
+#if defined(SUPPORT_CUSTOM_SWAP_OPERATIONS)
+
+	if(psDCInfo->psFuncTable->pfnQuerySwapCommandID != IMG_NULL)
+	{
+		psDCInfo->psFuncTable->pfnQuerySwapCommandID(psDCInfo->hExtDevice,
+													 psSwapChain->hExtSwapChain,
+													 psDCInfo->sSystemBuffer.sDeviceClassBuffer.hExtBuffer, 
+													 0, 
+													 &ui16SwapCommandID,
+													 &bAddReferenceToLast);
+		
+	}
+
+#endif
+
+	
+	apsSrcSync[0] = psDCInfo->sSystemBuffer.sDeviceClassBuffer.psKernelSyncInfo;
+	
+
+
+	if(bAddReferenceToLast && psSwapChain->psLastFlipBuffer)
+	{
+		
+		if (apsSrcSync[0] != psSwapChain->psLastFlipBuffer->sDeviceClassBuffer.psKernelSyncInfo)
+		{
+			apsSrcSync[1] = psSwapChain->psLastFlipBuffer->sDeviceClassBuffer.psKernelSyncInfo;
+			
+
+
+			ui32NumSrcSyncs++;
+		}
+	}
+
+	
+	eError = PVRSRVInsertCommandKM (psQueue,
+									&psCommand,
+									psDCInfo->ui32DeviceID,
+									ui16SwapCommandID,
+									0,
+									IMG_NULL,
+									ui32NumSrcSyncs,
+									apsSrcSync,
+									sizeof(DISPLAYCLASS_FLIP_COMMAND));
+	if(eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCSystemKM: Failed to get space in queue"));
+		goto Exit;
+	}
+
+	
+	psFlipCmd = (DISPLAYCLASS_FLIP_COMMAND*)psCommand->pvData;
+
+	
+	psFlipCmd->hExtDevice = psDCInfo->hExtDevice;
+
+	
+	psFlipCmd->hExtSwapChain = psSwapChain->hExtSwapChain;
+
+	
+	psFlipCmd->hExtBuffer = psDCInfo->sSystemBuffer.sDeviceClassBuffer.hExtBuffer;
+
+	
+	psFlipCmd->hPrivateTag = IMG_NULL;
+
+	
+	psFlipCmd->ui32ClipRectCount = 0;
+
+	psFlipCmd->ui32SwapInterval = 1;
+
+	
+	eError = PVRSRVSubmitCommandKM (psQueue, psCommand);
+	if (eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCSystemKM: Failed to submit command"));
+		goto Exit;
+	}
+
+	
+
+
+
+
+
+
+	 
+	LOOP_UNTIL_TIMEOUT(MAX_HW_TIME_US)
+	{
+		if(PVRSRVProcessQueues(KERNEL_ID, IMG_FALSE) != PVRSRV_ERROR_PROCESSING_BLOCKED)
+		{
+			goto ProcessedQueues;
+		}
+
+		OSWaitus(MAX_HW_TIME_US/WAIT_TRY_COUNT);
+	} END_LOOP_UNTIL_TIMEOUT();
+
+	PVR_DPF((PVR_DBG_ERROR,"PVRSRVSwapToDCSystemKM: Failed to process queues"));
+	eError = PVRSRV_ERROR_FAILED_TO_PROCESS_QUEUE;
+	goto Exit;
+
+ProcessedQueues:
+	
+	psSwapChain->psLastFlipBuffer = &psDCInfo->sSystemBuffer;
+
+	eError = PVRSRV_OK;
+
+Exit:
+
+	if(eError == PVRSRV_ERROR_CANNOT_GET_QUEUE_SPACE)
+	{
+		eError = PVRSRV_ERROR_RETRY;
+	}
+
+#if defined(SUPPORT_LMA)
+	PVRSRVPowerUnlock(KERNEL_ID);
+#endif
+	return eError;
+}
+
+
+static
+PVRSRV_ERROR PVRSRVRegisterSystemISRHandler (PFN_ISR_HANDLER	pfnISRHandler,
+											 IMG_VOID			*pvISRHandlerData,
+											 IMG_UINT32			ui32ISRSourceMask,
+											 IMG_UINT32			ui32DeviceID)
+{
+	SYS_DATA 			*psSysData;
+	PVRSRV_DEVICE_NODE	*psDevNode;
+
+	PVR_UNREFERENCED_PARAMETER(ui32ISRSourceMask);
+
+	SysAcquireData(&psSysData);
+
+	
+	psDevNode = (PVRSRV_DEVICE_NODE*)
+				List_PVRSRV_DEVICE_NODE_Any_va(psSysData->psDeviceNodeList,
+												&MatchDeviceKM_AnyVaCb,
+												ui32DeviceID,
+												IMG_TRUE);
+
+	if (psDevNode == IMG_NULL)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVRegisterSystemISRHandler: Failed to get psDevNode"));
+		PVR_DBG_BREAK;
+		return PVRSRV_ERROR_NO_DEVICENODE_FOUND;
+	}
+
+	
+	psDevNode->pvISRData = (IMG_VOID*) pvISRHandlerData;
+
+	
+	psDevNode->pfnDeviceISR	= pfnISRHandler;
+
+	return PVRSRV_OK;
+}
+
+static
+IMG_VOID PVRSRVSetDCState_ForEachVaCb(PVRSRV_DEVICE_NODE *psDeviceNode, va_list va)
+{
+	PVRSRV_DISPLAYCLASS_INFO *psDCInfo;
+	IMG_UINT32 ui32State;
+	ui32State = va_arg(va, IMG_UINT32);
+
+	if (psDeviceNode->sDevId.eDeviceClass == PVRSRV_DEVICE_CLASS_DISPLAY)
+	{
+		psDCInfo = (PVRSRV_DISPLAYCLASS_INFO *)psDeviceNode->pvDevice;
+		if (psDCInfo->psFuncTable->pfnSetDCState && psDCInfo->hExtDevice)
+		{
+			psDCInfo->psFuncTable->pfnSetDCState(psDCInfo->hExtDevice, ui32State);
+		}
+	}
+}
+
+
+IMG_VOID IMG_CALLCONV PVRSRVSetDCState(IMG_UINT32 ui32State)
+{
+	SYS_DATA					*psSysData;
+
+	SysAcquireData(&psSysData);
+
+	List_PVRSRV_DEVICE_NODE_ForEach_va(psSysData->psDeviceNodeList,
+										&PVRSRVSetDCState_ForEachVaCb,
+										ui32State);
+}
+
+
+IMG_EXPORT
+IMG_BOOL PVRGetDisplayClassJTable(PVRSRV_DC_DISP2SRV_KMJTABLE *psJTable)
+{
+	psJTable->ui32TableSize = sizeof(PVRSRV_DC_DISP2SRV_KMJTABLE);
+	psJTable->pfnPVRSRVRegisterDCDevice = &PVRSRVRegisterDCDeviceKM;
+	psJTable->pfnPVRSRVRemoveDCDevice = &PVRSRVRemoveDCDeviceKM;
+	psJTable->pfnPVRSRVOEMFunction = &SysOEMFunction;
+	psJTable->pfnPVRSRVRegisterCmdProcList = &PVRSRVRegisterCmdProcListKM;
+	psJTable->pfnPVRSRVRemoveCmdProcList = &PVRSRVRemoveCmdProcListKM;
+#if defined(SUPPORT_MISR_IN_THREAD)
+        psJTable->pfnPVRSRVCmdComplete = &OSVSyncMISR;
+#else
+        psJTable->pfnPVRSRVCmdComplete = &PVRSRVCommandCompleteKM;
+#endif
+	psJTable->pfnPVRSRVRegisterSystemISRHandler = &PVRSRVRegisterSystemISRHandler;
+	psJTable->pfnPVRSRVRegisterPowerDevice = &PVRSRVRegisterPowerDevice;
+#if defined(SUPPORT_CUSTOM_SWAP_OPERATIONS)
+	psJTable->pfnPVRSRVFreeCmdCompletePacket = &PVRSRVFreeCommandCompletePacketKM;
+#endif
+
+	return IMG_TRUE;
+}
+
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVCloseBCDeviceKM (IMG_HANDLE	hDeviceKM,
+									IMG_BOOL	bResManCallback)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_BUFFERCLASS_PERCONTEXT_INFO *psBCPerContextInfo;
+
+	PVR_UNREFERENCED_PARAMETER(bResManCallback);
+
+	psBCPerContextInfo = (PVRSRV_BUFFERCLASS_PERCONTEXT_INFO *)hDeviceKM;
+
+	
+	eError = ResManFreeResByPtr(psBCPerContextInfo->hResItem);
+
+	return eError;
+}
+
+
+static PVRSRV_ERROR CloseBCDeviceCallBack(IMG_PVOID		pvParam,
+										  IMG_UINT32	ui32Param)
+{
+	PVRSRV_BUFFERCLASS_PERCONTEXT_INFO *psBCPerContextInfo;
+	PVRSRV_BUFFERCLASS_INFO *psBCInfo;
+
+	PVR_UNREFERENCED_PARAMETER(ui32Param);
+
+	psBCPerContextInfo = (PVRSRV_BUFFERCLASS_PERCONTEXT_INFO *)pvParam;
+	psBCInfo = psBCPerContextInfo->psBCInfo;
+
+	psBCInfo->ui32RefCount--;
+	if(psBCInfo->ui32RefCount == 0)
+	{
+		IMG_UINT32 i;
+
+		
+		psBCInfo->psFuncTable->pfnCloseBCDevice(psBCInfo->ui32DeviceID, psBCInfo->hExtDevice);
+
+		
+		for(i=0; i<psBCInfo->ui32BufferCount; i++)
+		{
+			if(psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo)
+			{
+				if (--psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount == 0)
+				{
+					PVRSRVFreeSyncInfoKM(psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo);
+				}
+			}
+		}
+
+		
+		if(psBCInfo->psBuffer)
+		{
+			OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_BC_BUFFER), psBCInfo->psBuffer, IMG_NULL);
+			psBCInfo->psBuffer = IMG_NULL;
+		}
+	}
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_BUFFERCLASS_PERCONTEXT_INFO), psBCPerContextInfo, IMG_NULL);
+	
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVOpenBCDeviceKM (PVRSRV_PER_PROCESS_DATA	*psPerProc,
+								   IMG_UINT32				ui32DeviceID,
+								   IMG_HANDLE				hDevCookie,
+								   IMG_HANDLE				*phDeviceKM)
+{
+	PVRSRV_BUFFERCLASS_INFO	*psBCInfo;
+	PVRSRV_BUFFERCLASS_PERCONTEXT_INFO	*psBCPerContextInfo;
+	PVRSRV_DEVICE_NODE		*psDeviceNode;
+	SYS_DATA 				*psSysData;
+	IMG_UINT32 				i;
+	PVRSRV_ERROR			eError;
+
+	if(!phDeviceKM || !hDevCookie)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: Invalid params"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	SysAcquireData(&psSysData);
+
+	
+	psDeviceNode = (PVRSRV_DEVICE_NODE*)
+			List_PVRSRV_DEVICE_NODE_Any_va(psSysData->psDeviceNodeList,
+										   &MatchDeviceKM_AnyVaCb,
+										   ui32DeviceID,
+										   IMG_FALSE,
+										   PVRSRV_DEVICE_CLASS_BUFFER);
+	if (!psDeviceNode)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: No devnode matching index %d", ui32DeviceID));
+		return PVRSRV_ERROR_NO_DEVICENODE_FOUND;
+	}
+	psBCInfo = (PVRSRV_BUFFERCLASS_INFO*)psDeviceNode->pvDevice;
+
+	
+
+
+	if(OSAllocMem(PVRSRV_OS_PAGEABLE_HEAP,
+				  sizeof(*psBCPerContextInfo),
+				  (IMG_VOID **)&psBCPerContextInfo, IMG_NULL,
+				  "Buffer Class per Context Info") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: Failed psBCPerContextInfo alloc"));
+		return PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+	OSMemSet(psBCPerContextInfo, 0, sizeof(*psBCPerContextInfo));
+
+	if(psBCInfo->ui32RefCount++ == 0)
+	{
+		BUFFER_INFO sBufferInfo;
+
+		psDeviceNode = (PVRSRV_DEVICE_NODE *)hDevCookie;
+
+		
+		psBCInfo->hDevMemContext = (IMG_HANDLE)psDeviceNode->sDevMemoryInfo.pBMKernelContext;
+
+		
+		eError = psBCInfo->psFuncTable->pfnOpenBCDevice(ui32DeviceID, &psBCInfo->hExtDevice);
+		if(eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: Failed to open external BC device"));
+			return eError;
+		}
+
+		
+		eError = psBCInfo->psFuncTable->pfnGetBCInfo(psBCInfo->hExtDevice, &sBufferInfo);
+		if(eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM : Failed to get BC Info"));
+			return eError;
+		}
+
+		
+		psBCInfo->ui32BufferCount = sBufferInfo.ui32BufferCount;
+		
+
+		
+		eError = OSAllocMem(PVRSRV_OS_PAGEABLE_HEAP,
+							  sizeof(PVRSRV_BC_BUFFER) * sBufferInfo.ui32BufferCount,
+							  (IMG_VOID **)&psBCInfo->psBuffer,
+						 	  IMG_NULL,
+							  "Array of Buffer Class Buffer");
+		if(eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: Failed to allocate BC buffers"));
+			return eError;
+		}
+		OSMemSet (psBCInfo->psBuffer,
+					0,
+					sizeof(PVRSRV_BC_BUFFER) * sBufferInfo.ui32BufferCount);
+
+		for(i=0; i<psBCInfo->ui32BufferCount; i++)
+		{
+			
+			eError = PVRSRVAllocSyncInfoKM(IMG_NULL,
+										psBCInfo->hDevMemContext,
+										&psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo);
+			if(eError != PVRSRV_OK)
+			{
+				PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: Failed sync info alloc"));
+				goto ErrorExit;
+			}
+
+			psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount++;
+			
+			
+
+
+			eError = psBCInfo->psFuncTable->pfnGetBCBuffer(psBCInfo->hExtDevice,
+															i,
+															psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->psSyncData,
+															&psBCInfo->psBuffer[i].sDeviceClassBuffer.hExtBuffer);
+			if(eError != PVRSRV_OK)
+			{
+				PVR_DPF((PVR_DBG_ERROR,"PVRSRVOpenBCDeviceKM: Failed to get BC buffers"));
+				goto ErrorExit;
+			}
+
+			
+			psBCInfo->psBuffer[i].sDeviceClassBuffer.pfnGetBufferAddr = psBCInfo->psFuncTable->pfnGetBufferAddr;
+			psBCInfo->psBuffer[i].sDeviceClassBuffer.hDevMemContext = psBCInfo->hDevMemContext;
+			psBCInfo->psBuffer[i].sDeviceClassBuffer.hExtDevice = psBCInfo->hExtDevice;
+		}
+	}
+
+	psBCPerContextInfo->psBCInfo = psBCInfo;
+	psBCPerContextInfo->hResItem = ResManRegisterRes(psPerProc->hResManContext,
+													 RESMAN_TYPE_BUFFERCLASS_DEVICE,
+													 psBCPerContextInfo,
+													 0,
+													 &CloseBCDeviceCallBack);
+
+	
+	*phDeviceKM = (IMG_HANDLE)psBCPerContextInfo;
+
+	return PVRSRV_OK;
+
+ErrorExit:
+
+	
+	for(i=0; i<psBCInfo->ui32BufferCount; i++)
+	{
+		if(psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo)
+		{
+			if (--psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo->ui32RefCount == 0)
+			{
+				PVRSRVFreeSyncInfoKM(psBCInfo->psBuffer[i].sDeviceClassBuffer.psKernelSyncInfo);
+			}
+		}
+	}
+
+	
+	if(psBCInfo->psBuffer)
+	{
+		OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP, sizeof(PVRSRV_BC_BUFFER), psBCInfo->psBuffer, IMG_NULL);
+		psBCInfo->psBuffer = IMG_NULL;
+	}
+
+	return eError;
+}
+
+
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVGetBCInfoKM (IMG_HANDLE hDeviceKM,
+								BUFFER_INFO *psBufferInfo)
+{
+	PVRSRV_BUFFERCLASS_INFO *psBCInfo;
+	PVRSRV_ERROR 			eError;
+
+	if(!hDeviceKM || !psBufferInfo)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetBCInfoKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psBCInfo = BCDeviceHandleToBCInfo(hDeviceKM);
+
+	eError = psBCInfo->psFuncTable->pfnGetBCInfo(psBCInfo->hExtDevice, psBufferInfo);
+
+	if(eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetBCInfoKM : Failed to get BC Info"));
+		return eError;
+	}
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+PVRSRV_ERROR PVRSRVGetBCBufferKM (IMG_HANDLE hDeviceKM,
+								  IMG_UINT32 ui32BufferIndex,
+								  IMG_HANDLE *phBuffer)
+{
+	PVRSRV_BUFFERCLASS_INFO *psBCInfo;
+
+	if(!hDeviceKM || !phBuffer)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetBCBufferKM: Invalid parameters"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	psBCInfo = BCDeviceHandleToBCInfo(hDeviceKM);
+
+	if(ui32BufferIndex < psBCInfo->ui32BufferCount)
+	{
+		*phBuffer = (IMG_HANDLE)&psBCInfo->psBuffer[ui32BufferIndex];
+	}
+	else
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVGetBCBufferKM: Buffer index %d out of range (%d)", ui32BufferIndex,psBCInfo->ui32BufferCount));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT
+IMG_BOOL PVRGetBufferClassJTable(PVRSRV_BC_BUFFER2SRV_KMJTABLE *psJTable)
+{
+	psJTable->ui32TableSize = sizeof(PVRSRV_BC_BUFFER2SRV_KMJTABLE);
+
+	psJTable->pfnPVRSRVRegisterBCDevice = &PVRSRVRegisterBCDeviceKM;
+	psJTable->pfnPVRSRVScheduleDevices = &PVRSRVScheduleDevicesKM;
+	psJTable->pfnPVRSRVRemoveBCDevice = &PVRSRVRemoveBCDeviceKM;
+
+	return IMG_TRUE;
+}
+