DevVGA_VDMA.cpp revision 6140c719043426365fcbc5e628c6d6facc42ec4e
/** @file
* Video DMA (VDMA) support.
*/
/*
* Copyright (C) 2006-2009 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
#include <VBox/VBoxVideo.h>
#include <iprt/semaphore.h>
#include "DevVGA.h"
#include "HGSMI/SHGSMIHost.h"
#include "HGSMI/HGSMIHostHlp.h"
typedef enum
{
typedef struct VBOXVDMAPIPE
{
/* critical section for accessing pipe properties */
/* true iff the other end needs Event notification */
bool bNeedNotify;
typedef enum
{
typedef struct VBOXVDMAPIPE_CMD_BODY
{
union
{
void *pvCmd;
} u;
typedef struct VBOXVDMAPIPE_CMD
{
#define VBOXVDMAPIPE_CMD_FROM_ENTRY(_pE) ( (PVBOXVDMAPIPE_CMD)((uint8_t *)(_pE) - RT_OFFSETOF(VBOXVDMAPIPE_CMD, Entry)) )
typedef struct VBOXVDMAPIPE_CMD_POOL
{
typedef struct VBOXVDMAHOST
{
{
if (RT_SUCCESS(rc))
{
if (RT_SUCCESS(rc))
{
pPipe->bNeedNotify = true;
return VINF_SUCCESS;
// RTCritSectDelete(pPipe->hCritSect);
}
}
return rc;
}
{
if (RT_SUCCESS(rc))
{
{
pPipe->bNeedNotify = false;
rc = VINF_SUCCESS;
break;
pPipe->bNeedNotify = false;
break;
default:
break;
}
}
return rc;
}
{
if (RT_SUCCESS(rc))
{
{
rc = VINF_SUCCESS;
break;
break;
default:
break;
}
}
return rc;
}
{
if (RT_SUCCESS(rc))
{
bool bNeedNotify = false;
{
pPipe->bNeedNotify = false;
break;
pPipe->bNeedNotify = false;
break;
break;
default:
break;
}
if (bNeedNotify)
{
}
}
return rc;
}
typedef FNHVBOXVDMARWCB *PFNHVBOXVDMARWCB;
{
if (RT_SUCCESS(rc))
{
do
{
{
if (bProcessing)
{
rc = VINF_SUCCESS;
break;
}
{
break;
}
}
else
{
break;
}
if (!RT_SUCCESS(rc))
break;
if (!RT_SUCCESS(rc))
break;
} while (1);
}
return rc;
}
{
if (RT_SUCCESS(rc))
{
bool bNeedNotify = false;
{
if (bModified)
{
pPipe->bNeedNotify = false;
}
}
else
if (bNeedNotify)
{
}
}
return rc;
}
{
/* ensure the pipe is closed */
return VERR_INVALID_STATE;
return VINF_SUCCESS;
}
{
}
{
}
typedef struct
{
struct VBOXVDMAHOST *pVdma;
bool bHasCmd;
{
if (pEntry)
{
return true;
}
return false;
}
{
if (RT_SUCCESS(rc))
{
do
{
if (RT_SUCCESS(rc))
{
{
{
break;
}
{
break;
}
default:
break;
}
{
rc = VINF_SUCCESS;
break;
}
}
else
break;
} while (1);
}
/* always try to close the pipe to make sure the client side is notified */
return rc;
}
{
int rc;
PVBOXVDMAHOST pVdma = (PVBOXVDMAHOST)RTMemAllocZ (RT_OFFSETOF(VBOXVDMAHOST, CmdPool.aCmds[cPipeElements]));
if (pVdma)
{
if (RT_SUCCESS(rc))
{
rc = RTThreadCreate(&pVdma->hWorkerThread, vboxVDMAWorkerThread, pVdma, 0, RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "VDMA");
if (RT_SUCCESS(rc))
{
for (uint32_t i = 0; i < cPipeElements; ++i)
{
}
return VINF_SUCCESS;
}
}
}
else
return rc;
}
{
return VINF_SUCCESS;
}
typedef struct
{
struct VBOXVDMAHOST *pVdma;
bool bQueued;
{
if (pEntry)
{
return true;
}
/* @todo: should we try to flush some commands here? */
return false;
}
{
#if 1
{
case VBOXVDMA_CTL_TYPE_ENABLE:
break;
break;
case VBOXVDMA_CTL_TYPE_FLUSH:
break;
default:
}
#else
/* test asinch completion */
if (RT_SUCCESS(rc))
{
{
/* success */
return;
}
}
/* failure */
#endif
}
{
if (RT_SUCCESS(rc))
{
{
/* success */
return;
}
}
/* failure */
}