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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atiaccel.c,v 1.13 2003/04/24 21:19:22 tsi Exp $ */
/*
* Copyright 2001 through 2003 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of Marc Aurele La France not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Marc Aurele La France makes no representations
* about the suitability of this software for any purpose. It is provided
* "as-is" without express or implied warranty.
*
* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "atiaccel.h"
#include "atiadapter.h"
#include "atimach64accel.h"
#include "atistruct.h"
/*
* ATIInitializeAcceleration --
*
* This function is called to initialise both the framebuffer manager and XAA
* on a screen.
*/
Bool
ATIInitializeAcceleration
(
ScreenPtr pScreen,
ScrnInfoPtr pScreenInfo,
ATIPtr pATI
)
{
int maxScanlines = 32767, maxPixelArea, PixelArea;
if (pATI->OptionAccel)
{
if (!(pATI->pXAAInfo = XAACreateInfoRec()))
return FALSE;
switch (pATI->Adapter)
{
case ATI_ADAPTER_MACH64:
maxScanlines = ATIMach64AccelInit(pATI, pATI->pXAAInfo);
break;
default:
break;
}
}
#ifndef AVOID_CPIO
if (!pATI->BankInfo.BankSize)
#endif /* AVOID_CPIO */
{
/*
* Note: If PixelArea exceeds the engine's maximum, the excess is
* never used, even though it would be useful for such things
* as XVideo buffers.
*/
maxPixelArea = maxScanlines * pScreenInfo->displayWidth;
PixelArea = pScreenInfo->videoRam * 1024 * 8 / pATI->bitsPerPixel;
if (PixelArea > maxPixelArea)
PixelArea = maxPixelArea;
xf86InitFBManagerArea(pScreen, PixelArea, 2);
}
if (!pATI->OptionAccel || XAAInit(pScreen, pATI->pXAAInfo))
return TRUE;
XAADestroyInfoRec(pATI->pXAAInfo);
pATI->pXAAInfo = NULL;
return FALSE;
}
FBLinearPtr
ATIResizeOffscreenLinear
(
ScreenPtr pScreen,
FBLinearPtr pLinear,
int Size
)
{
if (Size <= 0)
{
xf86FreeOffscreenLinear(pLinear);
return NULL;
}
if (pLinear)
{
if ((pLinear->size >= Size) ||
xf86ResizeOffscreenLinear(pLinear, Size))
{
pLinear->MoveLinearCallback = NULL;
pLinear->RemoveLinearCallback = NULL;
return pLinear;
}
xf86FreeOffscreenLinear(pLinear);
}
pLinear = xf86AllocateOffscreenLinear(pScreen, Size, 16, NULL, NULL, NULL);
if (!pLinear)
{
int maxSize;
xf86QueryLargestOffscreenLinear(pScreen, &maxSize, 16,
PRIORITY_EXTREME);
if (maxSize < Size)
return NULL;
xf86PurgeUnlockedOffscreenAreas(pScreen);
pLinear =
xf86AllocateOffscreenLinear(pScreen, Size, 16, NULL, NULL, NULL);
}
return pLinear;
}
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