drivers/staging/imgtec/rogue/generated/rgxsignals_bridge/server_rgxsignals_bridge.c

   1 /*************************************************************************/ /*!
   2 @File
   3 @Title          Server bridge for rgxsignals
   4 @Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
   5 @Description    Implements the server side of the bridge for rgxsignals
   6 @License        Dual MIT/GPLv2
   7
   8 The contents of this file are subject to the MIT license as set out below.
   9
  10 Permission is hereby granted, free of charge, to any person obtaining a copy
  11 of this software and associated documentation files (the "Software"), to deal
  12 in the Software without restriction, including without limitation the rights
  13 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 copies of the Software, and to permit persons to whom the Software is
  15 furnished to do so, subject to the following conditions:
  16
  17 The above copyright notice and this permission notice shall be included in
  18 all copies or substantial portions of the Software.
  19
  20 Alternatively, the contents of this file may be used under the terms of
  21 the GNU General Public License Version 2 ("GPL") in which case the provisions
  22 of GPL are applicable instead of those above.
  23
  24 If you wish to allow use of your version of this file only under the terms of
  25 GPL, and not to allow others to use your version of this file under the terms
  26 of the MIT license, indicate your decision by deleting the provisions above
  27 and replace them with the notice and other provisions required by GPL as set
  28 out in the file called "GPL-COPYING" included in this distribution. If you do
  29 not delete the provisions above, a recipient may use your version of this file
  30 under the terms of either the MIT license or GPL.
  31
  32 This License is also included in this distribution in the file called
  33 "MIT-COPYING".
  34
  35 EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
  36 PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
  37 BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  38 PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
  39 COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  40 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  41 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  42 */ /**************************************************************************/
  43
  44 #include <stddef.h>
  45 #include <asm/uaccess.h>
  46
  47 #include "img_defs.h"
  48
  49 #include "rgxsignals.h"
  50
  51
  52 #include "common_rgxsignals_bridge.h"
  53
  54 #include "allocmem.h"
  55 #include "pvr_debug.h"
  56 #include "connection_server.h"
  57 #include "pvr_bridge.h"
  58 #include "rgx_bridge.h"
  59 #include "srvcore.h"
  60 #include "handle.h"
  61
  62 #include <linux/slab.h>
  63
  64
  65 #include "rgx_bvnc_defs_km.h"
  66
  67
  68
  69
  70 /* ***************************************************************************
  71  * Server-side bridge entry points
  72  */
  73
  74 static IMG_INT
  75 PVRSRVBridgeRGXNotifySignalUpdate(IMG_UINT32 ui32DispatchTableEntry,
  76                                           PVRSRV_BRIDGE_IN_RGXNOTIFYSIGNALUPDATE *psRGXNotifySignalUpdateIN,
  77                                           PVRSRV_BRIDGE_OUT_RGXNOTIFYSIGNALUPDATE *psRGXNotifySignalUpdateOUT,
  78                                          CONNECTION_DATA *psConnection)
  79 {
  80         IMG_HANDLE hPrivData = psRGXNotifySignalUpdateIN->hPrivData;
  81         IMG_HANDLE hPrivDataInt = NULL;
  82
  83
  84         {
  85                 PVRSRV_DEVICE_NODE *psDeviceNode = OSGetDevData(psConnection);
  86
  87                 /* Check that device supports the required feature */
  88                 if ((psDeviceNode->pfnCheckDeviceFeature) &&
  89                         !psDeviceNode->pfnCheckDeviceFeature(psDeviceNode, RGX_FEATURE_SIGNAL_SNOOPING_BIT_MASK))
  90                 {
  91                         psRGXNotifySignalUpdateOUT->eError = PVRSRV_ERROR_NOT_SUPPORTED;
  92
  93                         goto RGXNotifySignalUpdate_exit;
  94                 }
  95         }
  96
  97
  98
  99
 100
 101         /* Lock over handle lookup. */
 102         LockHandle();
 103
 104
 105
 106
 107
 108                                 {
 109                                         /* Look up the address from the handle */
 110                                         psRGXNotifySignalUpdateOUT->eError =
 111                                                 PVRSRVLookupHandleUnlocked(psConnection->psHandleBase,
 112                                                                                         (void **) &hPrivDataInt,
 113                                                                                         hPrivData,
 114                                                                                         PVRSRV_HANDLE_TYPE_DEV_PRIV_DATA,
 115                                                                                         IMG_TRUE);
 116                                         if(psRGXNotifySignalUpdateOUT->eError != PVRSRV_OK)
 117                                         {
 118                                                 UnlockHandle();
 119                                                 goto RGXNotifySignalUpdate_exit;
 120                                         }
 121                                 }
 122         /* Release now we have looked up handles. */
 123         UnlockHandle();
 124
 125         psRGXNotifySignalUpdateOUT->eError =
 126                 PVRSRVRGXNotifySignalUpdateKM(psConnection, OSGetDevData(psConnection),
 127                                         hPrivDataInt,
 128                                         psRGXNotifySignalUpdateIN->sDevSignalAddress);
 129
 130
 131
 132
 133 RGXNotifySignalUpdate_exit:
 134
 135         /* Lock over handle lookup cleanup. */
 136         LockHandle();
 137
 138
 139
 140
 141
 142
 143                                 {
 144                                         /* Unreference the previously looked up handle */
 145                                                 if(hPrivDataInt)
 146                                                 {
 147                                                         PVRSRVReleaseHandleUnlocked(psConnection->psHandleBase,
 148                                                                                         hPrivData,
 149                                                                                         PVRSRV_HANDLE_TYPE_DEV_PRIV_DATA);
 150                                                 }
 151                                 }
 152         /* Release now we have cleaned up look up handles. */
 153         UnlockHandle();
 154
 155
 156         return 0;
 157 }
 158
 159
 160
 161
 162 /* ***************************************************************************
 163  * Server bridge dispatch related glue
 164  */
 165
 166 static IMG_BOOL bUseLock = IMG_TRUE;
 167
 168 PVRSRV_ERROR InitRGXSIGNALSBridge(void);
 169 PVRSRV_ERROR DeinitRGXSIGNALSBridge(void);
 170
 171 /*
 172  * Register all RGXSIGNALS functions with services
 173  */
 174 PVRSRV_ERROR InitRGXSIGNALSBridge(void)
 175 {
 176
 177         SetDispatchTableEntry(PVRSRV_BRIDGE_RGXSIGNALS, PVRSRV_BRIDGE_RGXSIGNALS_RGXNOTIFYSIGNALUPDATE, PVRSRVBridgeRGXNotifySignalUpdate,
 178                                         NULL, bUseLock);
 179
 180
 181         return PVRSRV_OK;
 182 }
 183
 184 /*
 185  * Unregister all rgxsignals functions with services
 186  */
 187 PVRSRV_ERROR DeinitRGXSIGNALSBridge(void)
 188 {
 189         return PVRSRV_OK;
 190 }