diff options
Diffstat (limited to 'drivers/staging/cdv/pvr/services4/srvkm/common/mem.c')
| -rw-r--r-- | drivers/staging/cdv/pvr/services4/srvkm/common/mem.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/drivers/staging/cdv/pvr/services4/srvkm/common/mem.c b/drivers/staging/cdv/pvr/services4/srvkm/common/mem.c new file mode 100644 index 000000000000..5b5d1ac541a5 --- /dev/null +++ b/drivers/staging/cdv/pvr/services4/srvkm/common/mem.c @@ -0,0 +1,153 @@ +/********************************************************************** + * + * Copyright (C) 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, + IMG_BOOL bDummy) +{ + PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo = pvParam; + + PVR_UNREFERENCED_PARAMETER(ui32Param); + PVR_UNREFERENCED_PARAMETER(bDummy); + + OSFreePages(psKernelMemInfo->ui32Flags, + psKernelMemInfo->uAllocSize, + 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 uSize, + 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->uAllocSize = uSize; + + if(OSAllocPages(psKernelMemInfo->ui32Flags, + psKernelMemInfo->uAllocSize, + (IMG_UINT32)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, CLEANUP_WITH_POLL); + } + else + { + eError = FreeSharedSysMemCallBack(psKernelMemInfo, 0, CLEANUP_WITH_POLL); + } + + 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; +} + |