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https://github.com/revyos/thead-kernel.git
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334 lines
11 KiB
C
334 lines
11 KiB
C
/*******************************************************************************
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@File
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@Title Server bridge for synctracking
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@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
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@Description Implements the server side of the bridge for synctracking
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@License Dual MIT/GPLv2
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The contents of this file are subject to the MIT license as set out below.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 2 ("GPL") in which case the provisions
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of GPL are applicable instead of those above.
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If you wish to allow use of your version of this file only under the terms of
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GPL, and not to allow others to use your version of this file under the terms
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of the MIT license, indicate your decision by deleting the provisions above
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and replace them with the notice and other provisions required by GPL as set
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out in the file called "GPL-COPYING" included in this distribution. If you do
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not delete the provisions above, a recipient may use your version of this file
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under the terms of either the MIT license or GPL.
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This License is also included in this distribution in the file called
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"MIT-COPYING".
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EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
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PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*******************************************************************************/
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#include <linux/uaccess.h>
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#include "img_defs.h"
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#include "sync.h"
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#include "sync_server.h"
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#include "common_synctracking_bridge.h"
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#include "allocmem.h"
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#include "pvr_debug.h"
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#include "connection_server.h"
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#include "pvr_bridge.h"
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#if defined(SUPPORT_RGX)
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#include "rgx_bridge.h"
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#endif
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#include "srvcore.h"
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#include "handle.h"
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#include <linux/slab.h>
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/* ***************************************************************************
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* Server-side bridge entry points
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*/
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static IMG_INT
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PVRSRVBridgeSyncRecordRemoveByHandle(IMG_UINT32 ui32DispatchTableEntry,
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IMG_UINT8 * psSyncRecordRemoveByHandleIN_UI8,
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IMG_UINT8 * psSyncRecordRemoveByHandleOUT_UI8,
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CONNECTION_DATA * psConnection)
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{
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PVRSRV_BRIDGE_IN_SYNCRECORDREMOVEBYHANDLE *psSyncRecordRemoveByHandleIN =
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(PVRSRV_BRIDGE_IN_SYNCRECORDREMOVEBYHANDLE *)
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IMG_OFFSET_ADDR(psSyncRecordRemoveByHandleIN_UI8, 0);
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PVRSRV_BRIDGE_OUT_SYNCRECORDREMOVEBYHANDLE *psSyncRecordRemoveByHandleOUT =
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(PVRSRV_BRIDGE_OUT_SYNCRECORDREMOVEBYHANDLE *)
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IMG_OFFSET_ADDR(psSyncRecordRemoveByHandleOUT_UI8, 0);
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/* Lock over handle destruction. */
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LockHandle(psConnection->psHandleBase);
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psSyncRecordRemoveByHandleOUT->eError =
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PVRSRVReleaseHandleStagedUnlock(psConnection->psHandleBase,
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(IMG_HANDLE) psSyncRecordRemoveByHandleIN->hhRecord,
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PVRSRV_HANDLE_TYPE_SYNC_RECORD_HANDLE);
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if (unlikely((psSyncRecordRemoveByHandleOUT->eError != PVRSRV_OK) &&
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(psSyncRecordRemoveByHandleOUT->eError != PVRSRV_ERROR_RETRY)))
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{
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PVR_DPF((PVR_DBG_ERROR,
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"%s: %s",
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__func__, PVRSRVGetErrorString(psSyncRecordRemoveByHandleOUT->eError)));
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UnlockHandle(psConnection->psHandleBase);
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goto SyncRecordRemoveByHandle_exit;
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}
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/* Release now we have destroyed handles. */
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UnlockHandle(psConnection->psHandleBase);
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SyncRecordRemoveByHandle_exit:
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return 0;
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}
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static PVRSRV_ERROR _SyncRecordAddpshRecordIntRelease(void *pvData)
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{
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PVRSRV_ERROR eError;
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eError = PVRSRVSyncRecordRemoveByHandleKM((SYNC_RECORD_HANDLE) pvData);
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return eError;
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}
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static_assert(PVRSRV_SYNC_NAME_LENGTH <= IMG_UINT32_MAX,
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"PVRSRV_SYNC_NAME_LENGTH must not be larger than IMG_UINT32_MAX");
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static IMG_INT
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PVRSRVBridgeSyncRecordAdd(IMG_UINT32 ui32DispatchTableEntry,
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IMG_UINT8 * psSyncRecordAddIN_UI8,
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IMG_UINT8 * psSyncRecordAddOUT_UI8, CONNECTION_DATA * psConnection)
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{
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PVRSRV_BRIDGE_IN_SYNCRECORDADD *psSyncRecordAddIN =
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(PVRSRV_BRIDGE_IN_SYNCRECORDADD *) IMG_OFFSET_ADDR(psSyncRecordAddIN_UI8, 0);
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PVRSRV_BRIDGE_OUT_SYNCRECORDADD *psSyncRecordAddOUT =
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(PVRSRV_BRIDGE_OUT_SYNCRECORDADD *) IMG_OFFSET_ADDR(psSyncRecordAddOUT_UI8, 0);
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SYNC_RECORD_HANDLE pshRecordInt = NULL;
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IMG_HANDLE hhServerSyncPrimBlock = psSyncRecordAddIN->hhServerSyncPrimBlock;
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SYNC_PRIMITIVE_BLOCK *pshServerSyncPrimBlockInt = NULL;
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IMG_CHAR *uiClassNameInt = NULL;
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IMG_UINT32 ui32NextOffset = 0;
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IMG_BYTE *pArrayArgsBuffer = NULL;
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#if !defined(INTEGRITY_OS)
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IMG_BOOL bHaveEnoughSpace = IMG_FALSE;
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#endif
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IMG_UINT32 ui32BufferSize = 0;
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IMG_UINT64 ui64BufferSize =
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((IMG_UINT64) psSyncRecordAddIN->ui32ClassNameSize * sizeof(IMG_CHAR)) + 0;
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if (unlikely(psSyncRecordAddIN->ui32ClassNameSize > PVRSRV_SYNC_NAME_LENGTH))
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{
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psSyncRecordAddOUT->eError = PVRSRV_ERROR_BRIDGE_ARRAY_SIZE_TOO_BIG;
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goto SyncRecordAdd_exit;
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}
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if (ui64BufferSize > IMG_UINT32_MAX)
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{
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psSyncRecordAddOUT->eError = PVRSRV_ERROR_BRIDGE_BUFFER_TOO_SMALL;
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goto SyncRecordAdd_exit;
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}
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ui32BufferSize = (IMG_UINT32) ui64BufferSize;
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if (ui32BufferSize != 0)
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{
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#if !defined(INTEGRITY_OS)
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/* Try to use remainder of input buffer for copies if possible, word-aligned for safety. */
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IMG_UINT32 ui32InBufferOffset =
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PVR_ALIGN(sizeof(*psSyncRecordAddIN), sizeof(unsigned long));
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IMG_UINT32 ui32InBufferExcessSize =
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ui32InBufferOffset >=
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PVRSRV_MAX_BRIDGE_IN_SIZE ? 0 : PVRSRV_MAX_BRIDGE_IN_SIZE - ui32InBufferOffset;
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bHaveEnoughSpace = ui32BufferSize <= ui32InBufferExcessSize;
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if (bHaveEnoughSpace)
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{
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IMG_BYTE *pInputBuffer = (IMG_BYTE *) (void *)psSyncRecordAddIN;
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pArrayArgsBuffer = &pInputBuffer[ui32InBufferOffset];
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}
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else
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#endif
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{
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pArrayArgsBuffer = OSAllocMemNoStats(ui32BufferSize);
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if (!pArrayArgsBuffer)
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{
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psSyncRecordAddOUT->eError = PVRSRV_ERROR_OUT_OF_MEMORY;
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goto SyncRecordAdd_exit;
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}
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}
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}
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if (psSyncRecordAddIN->ui32ClassNameSize != 0)
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{
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uiClassNameInt = (IMG_CHAR *) IMG_OFFSET_ADDR(pArrayArgsBuffer, ui32NextOffset);
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ui32NextOffset += psSyncRecordAddIN->ui32ClassNameSize * sizeof(IMG_CHAR);
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}
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/* Copy the data over */
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if (psSyncRecordAddIN->ui32ClassNameSize * sizeof(IMG_CHAR) > 0)
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{
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if (OSCopyFromUser
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(NULL, uiClassNameInt, (const void __user *)psSyncRecordAddIN->puiClassName,
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psSyncRecordAddIN->ui32ClassNameSize * sizeof(IMG_CHAR)) != PVRSRV_OK)
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{
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psSyncRecordAddOUT->eError = PVRSRV_ERROR_INVALID_PARAMS;
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goto SyncRecordAdd_exit;
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}
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((IMG_CHAR *)
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uiClassNameInt)[(psSyncRecordAddIN->ui32ClassNameSize * sizeof(IMG_CHAR)) - 1] =
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'\0';
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}
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/* Lock over handle lookup. */
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LockHandle(psConnection->psHandleBase);
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/* Look up the address from the handle */
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psSyncRecordAddOUT->eError =
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PVRSRVLookupHandleUnlocked(psConnection->psHandleBase,
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(void **)&pshServerSyncPrimBlockInt,
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hhServerSyncPrimBlock,
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PVRSRV_HANDLE_TYPE_SYNC_PRIMITIVE_BLOCK, IMG_TRUE);
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if (unlikely(psSyncRecordAddOUT->eError != PVRSRV_OK))
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{
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UnlockHandle(psConnection->psHandleBase);
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goto SyncRecordAdd_exit;
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}
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/* Release now we have looked up handles. */
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UnlockHandle(psConnection->psHandleBase);
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psSyncRecordAddOUT->eError =
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PVRSRVSyncRecordAddKM(psConnection, OSGetDevNode(psConnection),
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&pshRecordInt,
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pshServerSyncPrimBlockInt,
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psSyncRecordAddIN->ui32ui32FwBlockAddr,
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psSyncRecordAddIN->ui32ui32SyncOffset,
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psSyncRecordAddIN->bbServerSync,
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psSyncRecordAddIN->ui32ClassNameSize, uiClassNameInt);
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/* Exit early if bridged call fails */
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if (unlikely(psSyncRecordAddOUT->eError != PVRSRV_OK))
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{
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goto SyncRecordAdd_exit;
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}
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/* Lock over handle creation. */
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LockHandle(psConnection->psHandleBase);
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psSyncRecordAddOUT->eError = PVRSRVAllocHandleUnlocked(psConnection->psHandleBase,
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&psSyncRecordAddOUT->hhRecord,
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(void *)pshRecordInt,
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PVRSRV_HANDLE_TYPE_SYNC_RECORD_HANDLE,
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PVRSRV_HANDLE_ALLOC_FLAG_NONE,
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(PFN_HANDLE_RELEASE) &
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_SyncRecordAddpshRecordIntRelease);
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if (unlikely(psSyncRecordAddOUT->eError != PVRSRV_OK))
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{
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UnlockHandle(psConnection->psHandleBase);
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goto SyncRecordAdd_exit;
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}
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/* Release now we have created handles. */
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UnlockHandle(psConnection->psHandleBase);
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SyncRecordAdd_exit:
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/* Lock over handle lookup cleanup. */
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LockHandle(psConnection->psHandleBase);
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/* Unreference the previously looked up handle */
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if (pshServerSyncPrimBlockInt)
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{
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PVRSRVReleaseHandleUnlocked(psConnection->psHandleBase,
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hhServerSyncPrimBlock,
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PVRSRV_HANDLE_TYPE_SYNC_PRIMITIVE_BLOCK);
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}
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/* Release now we have cleaned up look up handles. */
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UnlockHandle(psConnection->psHandleBase);
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if (psSyncRecordAddOUT->eError != PVRSRV_OK)
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{
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if (pshRecordInt)
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{
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PVRSRVSyncRecordRemoveByHandleKM(pshRecordInt);
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}
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}
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/* Allocated space should be equal to the last updated offset */
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#ifdef PVRSRV_NEED_PVR_ASSERT
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if (psSyncRecordAddOUT->eError == PVRSRV_OK)
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PVR_ASSERT(ui32BufferSize == ui32NextOffset);
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#endif /* PVRSRV_NEED_PVR_ASSERT */
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#if defined(INTEGRITY_OS)
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if (pArrayArgsBuffer)
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#else
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if (!bHaveEnoughSpace && pArrayArgsBuffer)
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#endif
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OSFreeMemNoStats(pArrayArgsBuffer);
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return 0;
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}
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/* ***************************************************************************
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* Server bridge dispatch related glue
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*/
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PVRSRV_ERROR InitSYNCTRACKINGBridge(void);
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PVRSRV_ERROR DeinitSYNCTRACKINGBridge(void);
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/*
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* Register all SYNCTRACKING functions with services
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*/
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PVRSRV_ERROR InitSYNCTRACKINGBridge(void)
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{
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SetDispatchTableEntry(PVRSRV_BRIDGE_SYNCTRACKING,
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PVRSRV_BRIDGE_SYNCTRACKING_SYNCRECORDREMOVEBYHANDLE,
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PVRSRVBridgeSyncRecordRemoveByHandle, NULL);
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SetDispatchTableEntry(PVRSRV_BRIDGE_SYNCTRACKING, PVRSRV_BRIDGE_SYNCTRACKING_SYNCRECORDADD,
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PVRSRVBridgeSyncRecordAdd, NULL);
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return PVRSRV_OK;
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}
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/*
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* Unregister all synctracking functions with services
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*/
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PVRSRV_ERROR DeinitSYNCTRACKINGBridge(void)
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{
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UnsetDispatchTableEntry(PVRSRV_BRIDGE_SYNCTRACKING,
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PVRSRV_BRIDGE_SYNCTRACKING_SYNCRECORDREMOVEBYHANDLE);
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UnsetDispatchTableEntry(PVRSRV_BRIDGE_SYNCTRACKING,
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PVRSRV_BRIDGE_SYNCTRACKING_SYNCRECORDADD);
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return PVRSRV_OK;
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}
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