static FBLinearPtr
localAllocateOffscreenLinear(
ScreenPtr pScreen,
int length,
int gran,
MoveLinearCallbackProcPtr moveCB,
RemoveLinearCallbackProcPtr removeCB,
pointer privData
){
FBManagerPtr offman;
FBLinearLinkPtr link;
FBAreaPtr area;
FBLinearPtr linear = NULL;
BoxPtr extents;
int w, h, pitch;
offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
/* Try to allocate from linear memory first...... */
#ifdef DEBUG
ErrorF("ALLOCATING LINEAR\n");
#endif
if ((linear = AllocateLinear(offman, length, gran, privData)))
return linear;
#ifdef DEBUG
ErrorF("NOPE, ALLOCATING AREA\n");
#endif
if(!(link = xalloc(sizeof(FBLinearLink))))
return NULL;
/* No linear available, so try and pinch some from the XY areas */
extents = REGION_EXTENTS(pScreen, offman->InitialBoxes);
pitch = extents->x2 - extents->x1;
if(gran && ((gran > pitch) || (pitch % gran))) {
/* we can't match the specified alignment with XY allocations */
xfree(link);
return NULL;
}
if(length < pitch) { /* special case */
w = length;
h = 1;
} else {
w = pitch;
h = (length + pitch - 1) / pitch;
}
if((area = localAllocateOffscreenArea(pScreen, w, h, gran,
moveCB ? LinearMoveCBWrapper : NULL,
removeCB ? LinearRemoveCBWrapper : NULL,
privData)))
{
link->area = area;
link->free = 0;
link->next = offman->LinearAreas;
offman->LinearAreas = link;
linear = &(link->linear);
linear->pScreen = pScreen;
linear->size = h * w;
linear->offset = (pitch * area->box.y1) + area->box.x1;
linear->granularity = gran;
linear->MoveLinearCallback = moveCB;
linear->RemoveLinearCallback = removeCB;
linear->devPrivate.ptr = privData;
} else
xfree(link);
#ifdef DEBUG
Dump(offman->LinearAreas);
#endif
return linear;
}
static FBLinearPtr
localAllocateOffscreenLinear(ScreenPtr pScreen,
int length,
int gran,
MoveLinearCallbackProcPtr moveCB,
RemoveLinearCallbackProcPtr removeCB,
void *privData)
{
FBManagerPtr offman;
FBLinearLinkPtr link;
FBAreaPtr area;
FBLinearPtr linear = NULL;
BoxPtr extents;
int w, h, pitch;
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86FBScreenKey);
/* Try to allocate from linear memory first...... */
DebugF("ALLOCATING LINEAR\n");
if ((linear = AllocateLinear(offman, length, gran, privData)))
return linear;
DebugF("NOPE, ALLOCATING AREA\n");
if (!(link = malloc(sizeof(FBLinearLink))))
return NULL;
/* No linear available, so try and pinch some from the XY areas */
extents = RegionExtents(offman->InitialBoxes);
pitch = extents->x2 - extents->x1;
if (gran > 1) {
if (gran > pitch) {
/* we can't match the specified alignment with XY allocations */
free(link);
return NULL;
}
if (pitch % gran) {
/* pitch and granularity aren't a perfect match, let's allocate
* a bit more so we can align later on
*/
length += gran - 1;
}
}
if (length < pitch) { /* special case */
w = length;
h = 1;
}
else {
w = pitch;
h = (length + pitch - 1) / pitch;
}
if ((area = localAllocateOffscreenArea(pScreen, w, h, gran,
moveCB ? LinearMoveCBWrapper : NULL,
removeCB ? LinearRemoveCBWrapper :
NULL, privData))) {
link->area = area;
link->free = 0;
link->next = offman->LinearAreas;
offman->LinearAreas = link;
linear = &(link->linear);
linear->pScreen = pScreen;
linear->size = h * w;
linear->offset = (pitch * area->box.y1) + area->box.x1;
if (gran > 1)
linear->offset = ((linear->offset + gran - 1) / gran) * gran;
linear->granularity = gran;
linear->MoveLinearCallback = moveCB;
linear->RemoveLinearCallback = removeCB;
linear->devPrivate.ptr = privData;
}
else
free(link);
DumpDebug(offman->LinearAreas);
return linear;
}
