src/add-ons/accelerants/radeon_hd/engine.cpp

   1 /*
   2  * Copyright 2006-2011, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Axel Dörfler, axeld@pinc-software.de
   7  *              Alexander von Gluck IV, kallisti5@unixzen.com
   8  */
   9
  10
  11 #include <Debug.h>
  12
  13 #include "accelerant.h"
  14 #include "accelerant_protos.h"
  15
  16
  17 #undef TRACE
  18
  19 #define TRACE_ENGINE
  20 #ifdef TRACE_ENGINE
  21 #       define TRACE(x...) _sPrintf("radeon_hd: " x)
  22 #else
  23 #       define TRACE(x...) ;
  24 #endif
  25
  26
  27 static engine_token sEngineToken = {1, 0 /*B_2D_ACCELERATION*/, NULL};
  28
  29
  30 //      #pragma mark - engine management
  31
  32
  33 uint32
  34 radeon_accelerant_engine_count(void)
  35 {
  36         TRACE("%s\n", __func__);
  37         return 1;
  38 }
  39
  40
  41 status_t
  42 radeon_acquire_engine(uint32 capabilities, uint32 maxWait,
  43         sync_token* syncToken, engine_token** _engineToken)
  44 {
  45         TRACE("%s\n", __func__);
  46         *_engineToken = &sEngineToken;
  47
  48         if (acquire_lock(&gInfo->shared_info->engine_lock) != B_OK)
  49                 return B_ERROR;
  50
  51         return B_OK;
  52 }
  53
  54
  55 status_t
  56 radeon_release_engine(engine_token* engineToken, sync_token* syncToken)
  57 {
  58         TRACE("%s\n", __func__);
  59         if (syncToken != NULL)
  60                 syncToken->engine_id = engineToken->engine_id;
  61
  62         release_lock(&gInfo->shared_info->engine_lock);
  63         return B_OK;
  64 }