void
xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
{
VidMapPtr vp;
MappingPtr mp;
if (!vidMemInfo.initialised || !vidMemInfo.unmapMem) {
xf86DrvMsg(ScreenNum, X_WARNING,
"xf86UnMapVidMem() called before xf86MapVidMem()\n");
return;
}
vp = getVidMapRec(ScreenNum);
mp = findMapping(vp, Base, Size);
if (!mp) {
xf86DrvMsg(ScreenNum, X_WARNING,
"xf86UnMapVidMem: cannot find region for [%p,0x%lx]\n",
Base, Size);
return;
}
if (vp->mtrrEnabled && vidMemInfo.undoWC && mp)
vidMemInfo.undoWC(ScreenNum, mp->mtrrInfo);
vidMemInfo.unmapMem(ScreenNum, Base, Size);
removeMapping(vp, mp);
}
void
xf86MakeNewMapping(int ScreenNum, int Flags, unsigned long Base, unsigned long Size, pointer Vbase)
{
VidMapPtr vp;
MappingPtr mp;
vp = getVidMapRec(ScreenNum);
mp = newMapping(vp);
mp->size = Size;
mp->virtBase = Vbase;
}
Bool
xf86CheckMTRR(int ScreenNum)
{
VidMapPtr vp = getVidMapRec(ScreenNum);
/*
* Check the "mtrr" option even when MTRR isn't supported to avoid
* warnings about unrecognised options.
*/
checkMtrrOption(vp);
if (vp->mtrrEnabled && vidMemInfo.setWC)
return TRUE;
return FALSE;
}
pointer
xf86MapVidMem(int ScreenNum, int Flags, unsigned long Base, unsigned long Size)
{
pointer vbase = NULL;
VidMapPtr vp;
MappingPtr mp;
if (((Flags & VIDMEM_FRAMEBUFFER) &&
(Flags & (VIDMEM_MMIO | VIDMEM_MMIO_32BIT))))
FatalError("Mapping memory with more than one type\n");
xf86InitVidMem();
if (!vidMemInfo.initialised || !vidMemInfo.mapMem)
return NULL;
vbase = vidMemInfo.mapMem(ScreenNum, Base, Size, Flags);
if (!vbase || vbase == (pointer)-1)
return NULL;
vp = getVidMapRec(ScreenNum);
mp = newMapping(vp);
mp->physBase = Base;
mp->size = Size;
mp->virtBase = vbase;
mp->flags = Flags;
/*
* Check the "mtrr" option even when MTRR isn't supported to avoid
* warnings about unrecognised options.
*/
checkMtrrOption(vp);
if (vp->mtrrEnabled && vidMemInfo.setWC) {
if (Flags & (VIDMEM_MMIO | VIDMEM_MMIO_32BIT))
mp->mtrrInfo =
vidMemInfo.setWC(ScreenNum, Base, Size, FALSE,
vp->mtrrFrom);
else if (Flags & VIDMEM_FRAMEBUFFER)
mp->mtrrInfo =
vidMemInfo.setWC(ScreenNum, Base, Size, TRUE,
vp->mtrrFrom);
}
return vbase;
}