diff options
Diffstat (limited to 'sgx/services4/srvkm/devices/sgx/pb.c')
| -rw-r--r-- | sgx/services4/srvkm/devices/sgx/pb.c | 110 |
1 files changed, 69 insertions, 41 deletions
diff --git a/sgx/services4/srvkm/devices/sgx/pb.c b/sgx/services4/srvkm/devices/sgx/pb.c index ab6523a..bcfe480 100644 --- a/sgx/services4/srvkm/devices/sgx/pb.c +++ b/sgx/services4/srvkm/devices/sgx/pb.c @@ -1,28 +1,44 @@ -/********************************************************************** - * - * 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 - * - ******************************************************************************/ +/*************************************************************************/ /*! +@Title Parameter Buffer management functions +@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved +@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 <stddef.h> @@ -35,8 +51,8 @@ #include "pdump_km.h" #include "sgxutils.h" -#ifndef __linux__ -#pragma message("TODO: Review use of OS_PAGEABLE vs OS_NON_PAGEABLE") +#if !defined(__linux__) && !defined(__QNXNTO__) +#pragma message("FIXME: Review use of OS_PAGEABLE vs OS_NON_PAGEABLE") #endif #include "lists.h" @@ -50,6 +66,8 @@ static PVRSRV_PER_PROCESS_DATA *psPerProcCreateSharedPB = IMG_NULL; static PVRSRV_ERROR SGXCleanupSharedPBDescCallback(IMG_PVOID pvParam, IMG_UINT32 ui32Param, IMG_BOOL bDummy); static PVRSRV_ERROR SGXCleanupSharedPBDescCreateLockCallback(IMG_PVOID pvParam, IMG_UINT32 ui32Param, IMG_BOOL bDummy); +/* override level pointer indirection */ +/* PRQA S 5102 12 */ IMG_EXPORT PVRSRV_ERROR SGXFindSharedPBDescKM(PVRSRV_PER_PROCESS_DATA *psPerProc, IMG_HANDLE hDevCookie, @@ -108,7 +126,7 @@ SGXFindSharedPBDescKM(PVRSRV_PER_PROCESS_DATA *psPerProc, sizeof(PVRSRV_KERNEL_MEM_INFO *) * psStubPBDesc->ui32SubKernelMemInfosCount, ppsSharedPBDescSubKernelMemInfos, 0); - + /*not nulling pointer, out of scope*/ PVR_DPF((PVR_DBG_ERROR, "SGXFindSharedPBDescKM: ResManRegisterRes failed")); @@ -173,15 +191,12 @@ ExitNotFound: static PVRSRV_ERROR SGXCleanupSharedPBDescKM(PVRSRV_STUB_PBDESC *psStubPBDescIn) { - + /*PVRSRV_STUB_PBDESC **ppsStubPBDesc;*/ IMG_UINT32 i; PVRSRV_DEVICE_NODE *psDeviceNode; psDeviceNode = (PVRSRV_DEVICE_NODE*)psStubPBDescIn->hDevCookie; - - - psStubPBDescIn->ui32RefCount--; if (psStubPBDescIn->ui32RefCount == 0) { @@ -189,7 +204,6 @@ SGXCleanupSharedPBDescKM(PVRSRV_STUB_PBDESC *psStubPBDescIn) List_PVRSRV_STUB_PBDESC_Remove(psStubPBDescIn); for(i=0 ; i<psStubPBDescIn->ui32SubKernelMemInfosCount; i++) { - PVRSRVFreeDeviceMemKM(psStubPBDescIn->hDevCookie, psStubPBDescIn->ppsSubKernelMemInfos[i]); } @@ -212,16 +226,16 @@ SGXCleanupSharedPBDescKM(PVRSRV_STUB_PBDESC *psStubPBDescIn) sizeof(PVRSRV_STUB_PBDESC), psStubPBDescIn, 0); - + /*not nulling pointer, copy on stack*/ - + /* signal the microkernel to clear its sTAHWPBDesc and s3DHWPBDesc values in sTA3DCtl */ SGXCleanupRequest(psDeviceNode, &sHWPBDescDevVAddr, PVRSRV_CLEANUPCMD_PB, CLEANUP_WITH_POLL); } return PVRSRV_OK; - + /*return PVRSRV_ERROR_INVALID_PARAMS;*/ } static PVRSRV_ERROR SGXCleanupSharedPBDescCallback(IMG_PVOID pvParam, IMG_UINT32 ui32Param, IMG_BOOL bDummy) @@ -281,7 +295,10 @@ SGXAddSharedPBDescKM(PVRSRV_PER_PROCESS_DATA *psPerProc, PVRSRV_SGXDEV_INFO *psSGXDevInfo; PRESMAN_ITEM psResItem; - + /* + * The caller must have previously called SGXFindSharedPBDesc with + * bLockOnFailure set, and not managed to find a suitable shared PB. + */ if (psPerProcCreateSharedPB != psPerProc) { goto NoAdd; @@ -309,7 +326,11 @@ SGXAddSharedPBDescKM(PVRSRV_PER_PROCESS_DATA *psPerProc, } - + /* + * We make the caller think the add was successful, + * but return the existing shared PB desc rather than + * a new one. + */ psResItem = ResManRegisterRes(psPerProc->hResManContext, RESMAN_TYPE_SHARED_PB_DESC, psStubPBDesc, @@ -324,7 +345,10 @@ SGXAddSharedPBDescKM(PVRSRV_PER_PROCESS_DATA *psPerProc, goto NoAddKeepPB; } - + /* + * The caller will unreference the PB desc after + * a successful add, so up the reference count. + */ psStubPBDesc->ui32RefCount++; *phSharedPBDesc = (IMG_HANDLE)psResItem; @@ -423,7 +447,8 @@ SGXAddSharedPBDescKM(PVRSRV_PER_PROCESS_DATA *psPerProc, } psStubPBDesc->hDevCookie = hDevCookie; - + /* Finally everything was prepared successfully so link the new + * PB in to place. */ List_PVRSRV_STUB_PBDESC_Insert(&(psSGXDevInfo->psStubPBDescListKM), psStubPBDesc); @@ -446,7 +471,7 @@ NoAdd: sizeof(PVRSRV_STUB_PBDESC), psStubPBDesc, 0); - + /*not nulling pointer, out of scope*/ } NoAddKeepPB: @@ -464,3 +489,6 @@ NoAddKeepPB: return eRet; } +/****************************************************************************** + End of file (pb.c) +******************************************************************************/ |