diff options
Diffstat (limited to 'sgx/services4/srvkm/env/linux/pvr_bridge_k.c')
| -rw-r--r-- | sgx/services4/srvkm/env/linux/pvr_bridge_k.c | 155 |
1 files changed, 122 insertions, 33 deletions
diff --git a/sgx/services4/srvkm/env/linux/pvr_bridge_k.c b/sgx/services4/srvkm/env/linux/pvr_bridge_k.c index 373b586..037b4c9 100644 --- a/sgx/services4/srvkm/env/linux/pvr_bridge_k.c +++ b/sgx/services4/srvkm/env/linux/pvr_bridge_k.c @@ -1,28 +1,46 @@ -/********************************************************************** - * - * 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 PVR Bridge Module (kernel side) +@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved +@Description Receives calls from the user portion of services and + despatches them to functions in the kernel portion. +@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 "services.h" @@ -36,6 +54,8 @@ #include "linkage.h" #include "pvr_bridge_km.h" #include "pvr_uaccess.h" +#include "refcount.h" +#include "buffer_manager.h" #if defined(SUPPORT_DRI_DRM) #include <drm/drmP.h> @@ -45,10 +65,12 @@ #endif #endif +/* VGX: */ #if defined(SUPPORT_VGX) #include "vgx_bridge.h" #endif +/* SGX: */ #if defined(SUPPORT_SGX) #include "sgx_bridge.h" #endif @@ -69,7 +91,7 @@ extern PVRSRV_LINUX_MUTEX gPVRSRVLock; #if defined(SUPPORT_MEMINFO_IDS) static IMG_UINT64 ui64Stamp; -#endif +#endif /* defined(SUPPORT_MEMINFO_IDS) */ PVRSRV_ERROR LinuxBridgeInit(IMG_VOID) @@ -103,6 +125,13 @@ LinuxBridgeDeInit(IMG_VOID) #if defined(DEBUG_BRIDGE_KM) +/* + * Lock MMap regions list (called on page start/stop while reading /proc/mmap) + * + * sfile : seq_file that handles /proc file + * start : TRUE if it's start, FALSE if it's stop + * + */ static void ProcSeqStartstopBridgeStats(struct seq_file *sfile,IMG_BOOL start) { if(start) @@ -116,6 +145,16 @@ static void ProcSeqStartstopBridgeStats(struct seq_file *sfile,IMG_BOOL start) } +/* + * Convert offset (index from KVOffsetTable) to element + * (called when reading /proc/mmap file) + + * sfile : seq_file that handles /proc file + * off : index into the KVOffsetTable from which to print + * + * returns void* : Pointer to element that will be dumped + * +*/ static void* ProcSeqOff2ElementBridgeStats(struct seq_file *sfile, loff_t off) { if(!off) @@ -132,12 +171,28 @@ static void* ProcSeqOff2ElementBridgeStats(struct seq_file *sfile, loff_t off) return (void*)&g_BridgeDispatchTable[off-1]; } +/* + * Gets next MMap element to show. (called when reading /proc/mmap file) + + * sfile : seq_file that handles /proc file + * el : actual element + * off : index into the KVOffsetTable from which to print + * + * returns void* : Pointer to element to show (0 ends iteration) +*/ static void* ProcSeqNextBridgeStats(struct seq_file *sfile,void* el,loff_t off) { return ProcSeqOff2ElementBridgeStats(sfile,off); } +/* + * Show MMap element (called when reading /proc/mmap file) + + * sfile : seq_file that handles /proc file + * el : actual element + * +*/ static void ProcSeqShowBridgeStats(struct seq_file *sfile,void* el) { PVRSRV_BRIDGE_DISPATCH_TABLE_ENTRY *psEntry = ( PVRSRV_BRIDGE_DISPATCH_TABLE_ENTRY*)el; @@ -172,7 +227,7 @@ static void ProcSeqShowBridgeStats(struct seq_file *sfile,void* el) psEntry->ui32CopyToUserTotalBytes); } -#endif +#endif /* DEBUG_BRIDGE_KM */ #if defined(SUPPORT_DRI_DRM) @@ -211,7 +266,9 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig goto unlock_and_return; } - + /* FIXME - Currently the CopyFromUserWrapper which collects stats about + * how much data is shifted to/from userspace isn't available to us + * here. */ if(OSCopyFromUser(IMG_NULL, psBridgePackageKM, psBridgePackageUM, @@ -249,7 +306,7 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig } else { - + /* lookup per-process data for this process */ psPerProc = PVRSRVPerProcessData(ui32PID); if(psPerProc == IMG_NULL) { @@ -328,7 +385,13 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig break; } - + /* + * The DRM file structure we are using for Services + * is not one that DRI authentication was done on. + * Look for an authenticated file structure for + * this process, making sure the DRM master is the + * same as ours. + */ psEnvPerProc = (PVRSRV_ENV_PER_PROCESS_DATA *)PVRSRVProcessPrivateData(psPerProc); if (psEnvPerProc == IMG_NULL) { @@ -362,7 +425,7 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig default: break; } -#endif +#endif /* defined(SUPPORT_DRI_DRM) && defined(PVR_SECURE_DRM_AUTH_EXPORT) */ #if defined(SUPPORT_DRI_DRM_EXTERNAL) { @@ -384,15 +447,40 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig PVRSRV_BRIDGE_OUT_EXPORTDEVICEMEM *psExportDeviceMemOUT = (PVRSRV_BRIDGE_OUT_EXPORTDEVICEMEM *)psBridgePackageKM->pvParamOut; PVRSRV_FILE_PRIVATE_DATA *psPrivateData = get_private(pFile); + IMG_HANDLE hMemInfo; + PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo; - if (pvr_get_user(psPrivateData->hKernelMemInfo, &psExportDeviceMemOUT->hMemInfo) != 0) + if (pvr_get_user(hMemInfo, &psExportDeviceMemOUT->hMemInfo) != 0) { err = -EFAULT; goto unlock_and_return; } + + /* Look up the meminfo we just exported */ + if(PVRSRVLookupHandle(KERNEL_HANDLE_BASE, + (IMG_PVOID *)&psKernelMemInfo, + hMemInfo, + PVRSRV_HANDLE_TYPE_MEM_INFO) != PVRSRV_OK) + { + PVR_DPF((PVR_DBG_ERROR, "%s: Failed to look up export handle", __FUNCTION__)); + err = -EFAULT; + goto unlock_and_return; + } + + /* Bump the refcount; decremented on release of the fd */ + PVRSRVKernelMemInfoIncRef(psKernelMemInfo); + + /* Tell the XProc about the export if required */ + if (psKernelMemInfo->sShareMemWorkaround.bInUse) + { + BM_XProcIndexAcquire(psKernelMemInfo->sShareMemWorkaround.ui32ShareIndex); + } + + psPrivateData->hKernelMemInfo = hMemInfo; #if defined(SUPPORT_MEMINFO_IDS) psPrivateData->ui64Stamp = ++ui64Stamp; + psKernelMemInfo->ui64Stamp = psPrivateData->ui64Stamp; if (pvr_put_user(psPrivateData->ui64Stamp, &psExportDeviceMemOUT->ui64Stamp) != 0) { err = -EFAULT; @@ -404,6 +492,7 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig #if defined(SUPPORT_MEMINFO_IDS) case PVRSRV_BRIDGE_MAP_DEV_MEMORY: + case PVRSRV_BRIDGE_MAP_DEV_MEMORY_2: { PVRSRV_BRIDGE_OUT_MAP_DEV_MEMORY *psMapDeviceMemoryOUT = (PVRSRV_BRIDGE_OUT_MAP_DEV_MEMORY *)psBridgePackageKM->pvParamOut; @@ -427,7 +516,7 @@ PVRSRV_BridgeDispatchKM(struct file *pFile, unsigned int unref__ ioctlCmd, unsig } break; } -#endif +#endif /* defined(SUPPORT_MEMINFO_IDS) */ default: break; |