diff options
Diffstat (limited to 'pvr-source/services4/srvkm/bridged/bridged_support.c')
| -rw-r--r-- | pvr-source/services4/srvkm/bridged/bridged_support.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/pvr-source/services4/srvkm/bridged/bridged_support.c b/pvr-source/services4/srvkm/bridged/bridged_support.c new file mode 100644 index 0000000..25baf29 --- /dev/null +++ b/pvr-source/services4/srvkm/bridged/bridged_support.c @@ -0,0 +1,117 @@ +/*************************************************************************/ /*! +@Title PVR Bridge Support Functions +@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved +@Description User/kernel mode bridge support. The functions in here + may be used beyond the bridge code proper (e.g. Linux + mmap interface). +@License Dual MIT/GPLv2 + +The contents of this file are subject to the MIT license as set out below. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +Alternatively, the contents of this file may be used under the terms of +the GNU General Public License Version 2 ("GPL") in which case the provisions +of GPL are applicable instead of those above. + +If you wish to allow use of your version of this file only under the terms of +GPL, and not to allow others to use your version of this file under the terms +of the MIT license, indicate your decision by deleting the provisions above +and replace them with the notice and other provisions required by GPL as set +out in the file called "GPL-COPYING" included in this distribution. If you do +not delete the provisions above, a recipient may use your version of this file +under the terms of either the MIT license or GPL. + +This License is also included in this distribution in the file called +"MIT-COPYING". + +EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS +PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR +PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR +COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ /**************************************************************************/ + +#include "img_defs.h" +#include "servicesint.h" +#include "bridged_support.h" + + +/* + * Derive the internal OS specific memory handle from a secure + * handle. + */ +PVRSRV_ERROR +#if defined (SUPPORT_SID_INTERFACE) +PVRSRVLookupOSMemHandle(PVRSRV_HANDLE_BASE *psHandleBase, IMG_HANDLE *phOSMemHandle, IMG_SID hMHandle) +#else +PVRSRVLookupOSMemHandle(PVRSRV_HANDLE_BASE *psHandleBase, IMG_HANDLE *phOSMemHandle, IMG_HANDLE hMHandle) +#endif +{ + IMG_HANDLE hMHandleInt; + PVRSRV_HANDLE_TYPE eHandleType; + PVRSRV_ERROR eError; + + /* + * We don't know the type of the handle at this point, so we use + * PVRSRVLookupHandleAnyType to look it up. + */ + eError = PVRSRVLookupHandleAnyType(psHandleBase, &hMHandleInt, + &eHandleType, + hMHandle); + if(eError != PVRSRV_OK) + { + return eError; + } + + switch(eHandleType) + { +#if defined(PVR_SECURE_HANDLES) || defined (SUPPORT_SID_INTERFACE) + case PVRSRV_HANDLE_TYPE_MEM_INFO: + case PVRSRV_HANDLE_TYPE_MEM_INFO_REF: + case PVRSRV_HANDLE_TYPE_SHARED_SYS_MEM_INFO: + { + PVRSRV_KERNEL_MEM_INFO *psMemInfo = (PVRSRV_KERNEL_MEM_INFO *)hMHandleInt; + + *phOSMemHandle = psMemInfo->sMemBlk.hOSMemHandle; + + break; + } + case PVRSRV_HANDLE_TYPE_SYNC_INFO: + { + PVRSRV_KERNEL_SYNC_INFO *psSyncInfo = (PVRSRV_KERNEL_SYNC_INFO *)hMHandleInt; + PVRSRV_KERNEL_MEM_INFO *psMemInfo = psSyncInfo->psSyncDataMemInfoKM; + + *phOSMemHandle = psMemInfo->sMemBlk.hOSMemHandle; + + break; + } + case PVRSRV_HANDLE_TYPE_SOC_TIMER: + { + *phOSMemHandle = (IMG_VOID *)hMHandleInt; + break; + } +#else + case PVRSRV_HANDLE_TYPE_NONE: + *phOSMemHandle = (IMG_VOID *)hMHandleInt; + break; +#endif + default: + return PVRSRV_ERROR_BAD_MAPPING; + } + + return PVRSRV_OK; +} +/****************************************************************************** + End of file (bridged_support.c) +******************************************************************************/ |