| /******************************************************************************* |
| @File |
| @Title Server bridge for smm |
| @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved |
| @Description Implements the server side of the bridge for smm |
| @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 "pmr.h" |
| #include "secure_export.h" |
| |
| |
| #include "common_smm_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 |
| PVRSRVBridgePMRSecureExportPMR(IMG_UINT32 ui32DispatchTableEntry, |
| PVRSRV_BRIDGE_IN_PMRSECUREEXPORTPMR *psPMRSecureExportPMRIN, |
| PVRSRV_BRIDGE_OUT_PMRSECUREEXPORTPMR *psPMRSecureExportPMROUT, |
| CONNECTION_DATA *psConnection) |
| { |
| IMG_HANDLE hPMR = psPMRSecureExportPMRIN->hPMR; |
| PMR * psPMRInt = NULL; |
| PMR * psPMROutInt = NULL; |
| CONNECTION_DATA *psSecureConnection; |
| |
| |
| |
| |
| |
| |
| |
| /* Lock over handle lookup. */ |
| LockHandle(); |
| |
| |
| |
| |
| |
| /* Look up the address from the handle */ |
| psPMRSecureExportPMROUT->eError = |
| PVRSRVLookupHandleUnlocked(psConnection->psHandleBase, |
| (void **) &psPMRInt, |
| hPMR, |
| PVRSRV_HANDLE_TYPE_PHYSMEM_PMR, |
| IMG_TRUE); |
| if(psPMRSecureExportPMROUT->eError != PVRSRV_OK) |
| { |
| UnlockHandle(); |
| goto PMRSecureExportPMR_exit; |
| } |
| /* Release now we have looked up handles. */ |
| UnlockHandle(); |
| |
| psPMRSecureExportPMROUT->eError = |
| PMRSecureExportPMR(psConnection, OSGetDevData(psConnection), |
| psPMRInt, |
| &psPMRSecureExportPMROUT->Export, |
| &psPMROutInt, &psSecureConnection); |
| /* Exit early if bridged call fails */ |
| if(psPMRSecureExportPMROUT->eError != PVRSRV_OK) |
| { |
| goto PMRSecureExportPMR_exit; |
| } |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| PMRSecureExportPMR_exit: |
| |
| /* Lock over handle lookup cleanup. */ |
| LockHandle(); |
| |
| |
| |
| |
| |
| |
| |
| /* Unreference the previously looked up handle */ |
| if(psPMRInt) |
| { |
| PVRSRVReleaseHandleUnlocked(psConnection->psHandleBase, |
| hPMR, |
| PVRSRV_HANDLE_TYPE_PHYSMEM_PMR); |
| } |
| /* Release now we have cleaned up look up handles. */ |
| UnlockHandle(); |
| |
| if (psPMRSecureExportPMROUT->eError != PVRSRV_OK) |
| { |
| if (psPMROutInt) |
| { |
| PMRSecureUnexportPMR(psPMROutInt); |
| } |
| } |
| |
| |
| return 0; |
| } |
| |
| |
| static IMG_INT |
| PVRSRVBridgePMRSecureUnexportPMR(IMG_UINT32 ui32DispatchTableEntry, |
| PVRSRV_BRIDGE_IN_PMRSECUREUNEXPORTPMR *psPMRSecureUnexportPMRIN, |
| PVRSRV_BRIDGE_OUT_PMRSECUREUNEXPORTPMR *psPMRSecureUnexportPMROUT, |
| CONNECTION_DATA *psConnection) |
| { |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| /* Lock over handle destruction. */ |
| LockHandle(); |
| |
| |
| |
| |
| |
| psPMRSecureUnexportPMROUT->eError = |
| PVRSRVReleaseHandleUnlocked(psConnection->psHandleBase, |
| (IMG_HANDLE) psPMRSecureUnexportPMRIN->hPMR, |
| PVRSRV_HANDLE_TYPE_PHYSMEM_PMR_SECURE_EXPORT); |
| if ((psPMRSecureUnexportPMROUT->eError != PVRSRV_OK) && |
| (psPMRSecureUnexportPMROUT->eError != PVRSRV_ERROR_RETRY)) |
| { |
| PVR_DPF((PVR_DBG_ERROR, |
| "PVRSRVBridgePMRSecureUnexportPMR: %s", |
| PVRSRVGetErrorStringKM(psPMRSecureUnexportPMROUT->eError))); |
| UnlockHandle(); |
| goto PMRSecureUnexportPMR_exit; |
| } |
| |
| /* Release now we have destroyed handles. */ |
| UnlockHandle(); |
| |
| |
| |
| PMRSecureUnexportPMR_exit: |
| |
| |
| |
| |
| return 0; |
| } |
| |
| |
| static IMG_INT |
| PVRSRVBridgePMRSecureImportPMR(IMG_UINT32 ui32DispatchTableEntry, |
| PVRSRV_BRIDGE_IN_PMRSECUREIMPORTPMR *psPMRSecureImportPMRIN, |
| PVRSRV_BRIDGE_OUT_PMRSECUREIMPORTPMR *psPMRSecureImportPMROUT, |
| CONNECTION_DATA *psConnection) |
| { |
| PMR * psPMRInt = NULL; |
| |
| |
| |
| |
| |
| |
| |
| |
| psPMRSecureImportPMROUT->eError = |
| PMRSecureImportPMR(psConnection, OSGetDevData(psConnection), |
| psPMRSecureImportPMRIN->Export, |
| &psPMRInt, |
| &psPMRSecureImportPMROUT->uiSize, |
| &psPMRSecureImportPMROUT->sAlign); |
| /* Exit early if bridged call fails */ |
| if(psPMRSecureImportPMROUT->eError != PVRSRV_OK) |
| { |
| goto PMRSecureImportPMR_exit; |
| } |
| |
| /* Lock over handle creation. */ |
| LockHandle(); |
| |
| |
| |
| |
| |
| psPMRSecureImportPMROUT->eError = PVRSRVAllocHandleUnlocked(psConnection->psHandleBase, |
| |
| &psPMRSecureImportPMROUT->hPMR, |
| (void *) psPMRInt, |
| PVRSRV_HANDLE_TYPE_PHYSMEM_PMR, |
| PVRSRV_HANDLE_ALLOC_FLAG_MULTI |
| ,(PFN_HANDLE_RELEASE)&PMRUnrefPMR); |
| if (psPMRSecureImportPMROUT->eError != PVRSRV_OK) |
| { |
| UnlockHandle(); |
| goto PMRSecureImportPMR_exit; |
| } |
| |
| /* Release now we have created handles. */ |
| UnlockHandle(); |
| |
| |
| |
| PMRSecureImportPMR_exit: |
| |
| |
| |
| if (psPMRSecureImportPMROUT->eError != PVRSRV_OK) |
| { |
| if (psPMRInt) |
| { |
| PMRUnrefPMR(psPMRInt); |
| } |
| } |
| |
| |
| return 0; |
| } |
| |
| |
| |
| |
| /* *************************************************************************** |
| * Server bridge dispatch related glue |
| */ |
| |
| static IMG_BOOL bUseLock = IMG_TRUE; |
| |
| PVRSRV_ERROR InitSMMBridge(void); |
| PVRSRV_ERROR DeinitSMMBridge(void); |
| |
| /* |
| * Register all SMM functions with services |
| */ |
| PVRSRV_ERROR InitSMMBridge(void) |
| { |
| |
| SetDispatchTableEntry(PVRSRV_BRIDGE_SMM, PVRSRV_BRIDGE_SMM_PMRSECUREEXPORTPMR, PVRSRVBridgePMRSecureExportPMR, |
| NULL, bUseLock); |
| |
| SetDispatchTableEntry(PVRSRV_BRIDGE_SMM, PVRSRV_BRIDGE_SMM_PMRSECUREUNEXPORTPMR, PVRSRVBridgePMRSecureUnexportPMR, |
| NULL, bUseLock); |
| |
| SetDispatchTableEntry(PVRSRV_BRIDGE_SMM, PVRSRV_BRIDGE_SMM_PMRSECUREIMPORTPMR, PVRSRVBridgePMRSecureImportPMR, |
| NULL, bUseLock); |
| |
| |
| return PVRSRV_OK; |
| } |
| |
| /* |
| * Unregister all smm functions with services |
| */ |
| PVRSRV_ERROR DeinitSMMBridge(void) |
| { |
| |
| UnsetDispatchTableEntry(PVRSRV_BRIDGE_SMM, PVRSRV_BRIDGE_SMM_PMRSECUREEXPORTPMR); |
| |
| UnsetDispatchTableEntry(PVRSRV_BRIDGE_SMM, PVRSRV_BRIDGE_SMM_PMRSECUREUNEXPORTPMR); |
| |
| UnsetDispatchTableEntry(PVRSRV_BRIDGE_SMM, PVRSRV_BRIDGE_SMM_PMRSECUREIMPORTPMR); |
| |
| |
| |
| return PVRSRV_OK; |
| } |