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 00000000000..a2673d53c23
--- /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;
+}
+