| /******************************************************************************* |
| @File |
| @Title Server bridge for mmextmem |
| @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved |
| @Description Implements the server side of the bridge for mmextmem |
| @License MIT |
| |
| 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. |
| |
| 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 <linux/uaccess.h> |
| |
| #include "img_defs.h" |
| |
| #include "devicemem_server.h" |
| #include "pmr.h" |
| #include "devicemem_heapcfg.h" |
| #include "physmem.h" |
| #include "physmem_extmem.h" |
| |
| |
| #include "common_mmextmem_bridge.h" |
| |
| #include "allocmem.h" |
| #include "pvr_debug.h" |
| #include "connection_server.h" |
| #include "pvr_bridge.h" |
| #if defined(SUPPORT_RGX) |
| #include "rgx_bridge.h" |
| #endif |
| #include "srvcore.h" |
| #include "handle.h" |
| |
| #include <linux/slab.h> |
| |
| |
| |
| |
| |
| |
| /* *************************************************************************** |
| * Server-side bridge entry points |
| */ |
| |
| static IMG_INT |
| PVRSRVBridgePhysmemWrapExtMem(IMG_UINT32 ui32DispatchTableEntry, |
| PVRSRV_BRIDGE_IN_PHYSMEMWRAPEXTMEM *psPhysmemWrapExtMemIN, |
| PVRSRV_BRIDGE_OUT_PHYSMEMWRAPEXTMEM *psPhysmemWrapExtMemOUT, |
| CONNECTION_DATA *psConnection) |
| { |
| PMR * psPMRPtrInt = NULL; |
| |
| |
| |
| |
| |
| |
| |
| |
| psPhysmemWrapExtMemOUT->eError = |
| PhysmemWrapExtMem(psConnection, OSGetDevData(psConnection), |
| psPhysmemWrapExtMemIN->uiSize, |
| psPhysmemWrapExtMemIN->ui64CpuVAddr, |
| psPhysmemWrapExtMemIN->uiFlags, |
| &psPMRPtrInt); |
| /* Exit early if bridged call fails */ |
| if(psPhysmemWrapExtMemOUT->eError != PVRSRV_OK) |
| { |
| goto PhysmemWrapExtMem_exit; |
| } |
| |
| /* Lock over handle creation. */ |
| LockHandle(); |
| |
| |
| |
| |
| |
| psPhysmemWrapExtMemOUT->eError = PVRSRVAllocHandleUnlocked(psConnection->psHandleBase, |
| |
| &psPhysmemWrapExtMemOUT->hPMRPtr, |
| (void *) psPMRPtrInt, |
| PVRSRV_HANDLE_TYPE_PHYSMEM_PMR, |
| PVRSRV_HANDLE_ALLOC_FLAG_MULTI |
| ,(PFN_HANDLE_RELEASE)&PMRUnrefPMR); |
| if (psPhysmemWrapExtMemOUT->eError != PVRSRV_OK) |
| { |
| UnlockHandle(); |
| goto PhysmemWrapExtMem_exit; |
| } |
| |
| /* Release now we have created handles. */ |
| UnlockHandle(); |
| |
| |
| |
| PhysmemWrapExtMem_exit: |
| |
| |
| |
| if (psPhysmemWrapExtMemOUT->eError != PVRSRV_OK) |
| { |
| if (psPMRPtrInt) |
| { |
| PMRUnrefPMR(psPMRPtrInt); |
| } |
| } |
| |
| |
| return 0; |
| } |
| |
| |
| |
| |
| /* *************************************************************************** |
| * Server bridge dispatch related glue |
| */ |
| |
| static IMG_BOOL bUseLock = IMG_TRUE; |
| |
| PVRSRV_ERROR InitMMEXTMEMBridge(void); |
| PVRSRV_ERROR DeinitMMEXTMEMBridge(void); |
| |
| /* |
| * Register all MMEXTMEM functions with services |
| */ |
| PVRSRV_ERROR InitMMEXTMEMBridge(void) |
| { |
| |
| SetDispatchTableEntry(PVRSRV_BRIDGE_MMEXTMEM, PVRSRV_BRIDGE_MMEXTMEM_PHYSMEMWRAPEXTMEM, PVRSRVBridgePhysmemWrapExtMem, |
| NULL, bUseLock); |
| |
| |
| return PVRSRV_OK; |
| } |
| |
| /* |
| * Unregister all mmextmem functions with services |
| */ |
| PVRSRV_ERROR DeinitMMEXTMEMBridge(void) |
| { |
| |
| UnsetDispatchTableEntry(PVRSRV_BRIDGE_MMEXTMEM, PVRSRV_BRIDGE_MMEXTMEM_PHYSMEMWRAPEXTMEM); |
| |
| |
| |
| return PVRSRV_OK; |
| } |