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, 151 insertions, 0 deletions

diff --git a/drivers/gpu/pvr/mem.c b/drivers/gpu/pvr/mem.c
new file mode 100644
index 0000000..a2673d5
--- /dev/null
+++ b/drivers/gpu/pvr/mem.c
@@ -0,0 +1,151 @@
+/**********************************************************************
+ *
+ * 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 "pvr_bridge_km.h"
+
+
+static PVRSRV_ERROR
+FreeSharedSysMemCallBack(IMG_PVOID	pvParam,
+						 IMG_UINT32	ui32Param)
+{
+	PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo = pvParam;
+
+	PVR_UNREFERENCED_PARAMETER(ui32Param);
+
+	OSFreePages(psKernelMemInfo->ui32Flags,
+				psKernelMemInfo->ui32AllocSize,
+				psKernelMemInfo->pvLinAddrKM,
+				psKernelMemInfo->sMemBlk.hOSMemHandle);
+
+	OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP,
+			  sizeof(PVRSRV_KERNEL_MEM_INFO),
+			  psKernelMemInfo,
+			  IMG_NULL);
+	
+
+	return PVRSRV_OK;
+}
+
+
+IMG_EXPORT PVRSRV_ERROR
+PVRSRVAllocSharedSysMemoryKM(PVRSRV_PER_PROCESS_DATA	*psPerProc,
+							 IMG_UINT32					ui32Flags,
+							 IMG_SIZE_T 				ui32Size,
+							 PVRSRV_KERNEL_MEM_INFO 	**ppsKernelMemInfo)
+{
+	PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo;
+
+	if(OSAllocMem(PVRSRV_OS_PAGEABLE_HEAP,
+				  sizeof(PVRSRV_KERNEL_MEM_INFO),
+				  (IMG_VOID **)&psKernelMemInfo, IMG_NULL,
+				  "Kernel Memory Info") != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR,"PVRSRVAllocSharedSysMemoryKM: Failed to alloc memory for meminfo"));
+		return PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+
+	OSMemSet(psKernelMemInfo, 0, sizeof(*psKernelMemInfo));
+
+	ui32Flags &= ~PVRSRV_HAP_MAPTYPE_MASK;
+	ui32Flags |= PVRSRV_HAP_MULTI_PROCESS;
+	psKernelMemInfo->ui32Flags = ui32Flags;
+	psKernelMemInfo->ui32AllocSize = ui32Size;
+
+	if(OSAllocPages(psKernelMemInfo->ui32Flags,
+					psKernelMemInfo->ui32AllocSize,
+					HOST_PAGESIZE(),
+					&psKernelMemInfo->pvLinAddrKM,
+					&psKernelMemInfo->sMemBlk.hOSMemHandle)
+		!= PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "PVRSRVAllocSharedSysMemoryKM: Failed to alloc memory for block"));
+		OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP,
+				  sizeof(PVRSRV_KERNEL_MEM_INFO),
+				  psKernelMemInfo,
+				  0);
+		return PVRSRV_ERROR_OUT_OF_MEMORY;
+	}
+
+	
+	psKernelMemInfo->sMemBlk.hResItem =
+				ResManRegisterRes(psPerProc->hResManContext,
+								  RESMAN_TYPE_SHARED_MEM_INFO,
+								  psKernelMemInfo,
+								  0,
+								  &FreeSharedSysMemCallBack);
+
+	*ppsKernelMemInfo = psKernelMemInfo;
+
+	return PVRSRV_OK; 
+}
+
+
+IMG_EXPORT PVRSRV_ERROR
+PVRSRVFreeSharedSysMemoryKM(PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo)
+{
+	PVRSRV_ERROR eError;
+
+	if(psKernelMemInfo->sMemBlk.hResItem)
+	{
+		eError = ResManFreeResByPtr(psKernelMemInfo->sMemBlk.hResItem);
+	}
+	else
+	{
+		eError = FreeSharedSysMemCallBack(psKernelMemInfo, 0);
+	}
+
+	return eError;
+}
+
+
+IMG_EXPORT PVRSRV_ERROR
+PVRSRVDissociateMemFromResmanKM(PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo)
+{
+	PVRSRV_ERROR eError = PVRSRV_OK;
+
+	if(!psKernelMemInfo)
+	{
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	if(psKernelMemInfo->sMemBlk.hResItem)
+	{
+		eError = ResManDissociateRes(psKernelMemInfo->sMemBlk.hResItem, IMG_NULL);
+
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR,"PVRSRVDissociateMemFromResmanKM: ResManDissociateRes failed"));
+			PVR_DBG_BREAK;
+			return eError;
+		}
+
+		psKernelMemInfo->sMemBlk.hResItem = IMG_NULL;
+	}
+
+	return eError;
+}
+