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Diffstat (limited to 'hw/xfree86/common/xf86fbman.c')
-rw-r--r--hw/xfree86/common/xf86fbman.c1236
1 files changed, 1236 insertions, 0 deletions
diff --git a/hw/xfree86/common/xf86fbman.c b/hw/xfree86/common/xf86fbman.c
new file mode 100644
index 000000000..7f4cffaae
--- /dev/null
+++ b/hw/xfree86/common/xf86fbman.c
@@ -0,0 +1,1236 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86fbman.c,v 1.24 2001/12/05 19:23:52 mvojkovi Exp $ */
+
+#include "misc.h"
+#include "xf86.h"
+
+#include "X.h"
+#include "scrnintstr.h"
+#include "regionstr.h"
+#include "xf86fbman.h"
+
+static int xf86FBMangerIndex = -1;
+static unsigned long xf86ManagerGeneration = 0;
+
+Bool xf86RegisterOffscreenManager(
+ ScreenPtr pScreen,
+ FBManagerFuncsPtr funcs
+){
+
+ if(xf86ManagerGeneration != serverGeneration) {
+ if((xf86FBMangerIndex = AllocateScreenPrivateIndex()) < 0)
+ return FALSE;
+ xf86ManagerGeneration = serverGeneration;
+ }
+
+ pScreen->devPrivates[xf86FBMangerIndex].ptr = (pointer)funcs;
+
+ return TRUE;
+}
+
+
+Bool
+xf86FBManagerRunning(ScreenPtr pScreen)
+{
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!pScreen->devPrivates[xf86FBMangerIndex].ptr)
+ return FALSE;
+
+ return TRUE;
+}
+
+Bool
+xf86RegisterFreeBoxCallback(
+ ScreenPtr pScreen,
+ FreeBoxCallbackProcPtr FreeBoxCallback,
+ pointer devPriv
+){
+ FBManagerFuncsPtr funcs;
+
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return FALSE;
+
+ return (*funcs->RegisterFreeBoxCallback)(pScreen, FreeBoxCallback, devPriv);
+}
+
+
+FBAreaPtr
+xf86AllocateOffscreenArea(
+ ScreenPtr pScreen,
+ int w, int h,
+ int gran,
+ MoveAreaCallbackProcPtr moveCB,
+ RemoveAreaCallbackProcPtr removeCB,
+ pointer privData
+){
+ FBManagerFuncsPtr funcs;
+
+ if(xf86FBMangerIndex < 0)
+ return NULL;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return NULL;
+
+ return (*funcs->AllocateOffscreenArea)(
+ pScreen, w, h, gran, moveCB, removeCB, privData);
+}
+
+
+FBLinearPtr
+xf86AllocateOffscreenLinear(
+ ScreenPtr pScreen,
+ int length,
+ int gran,
+ MoveLinearCallbackProcPtr moveCB,
+ RemoveLinearCallbackProcPtr removeCB,
+ pointer privData
+){
+ FBManagerFuncsPtr funcs;
+
+ if(xf86FBMangerIndex < 0)
+ return NULL;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return NULL;
+
+ return (*funcs->AllocateOffscreenLinear)(
+ pScreen, length, gran, moveCB, removeCB, privData);
+}
+
+
+void
+xf86FreeOffscreenArea(FBAreaPtr area)
+{
+ FBManagerFuncsPtr funcs;
+
+ if(!area) return;
+
+ if(xf86FBMangerIndex < 0)
+ return;
+ if(!(funcs =
+ (FBManagerFuncsPtr)area->pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return;
+
+ (*funcs->FreeOffscreenArea)(area);
+
+ return;
+}
+
+
+void
+xf86FreeOffscreenLinear(FBLinearPtr area)
+{
+ FBManagerFuncsPtr funcs;
+
+ if(!area) return;
+
+ if(xf86FBMangerIndex < 0)
+ return;
+ if(!(funcs =
+ (FBManagerFuncsPtr)area->pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return;
+
+ (*funcs->FreeOffscreenLinear)(area);
+
+ return;
+}
+
+
+Bool
+xf86ResizeOffscreenArea(
+ FBAreaPtr resize,
+ int w, int h
+){
+ FBManagerFuncsPtr funcs;
+
+ if(!resize) return FALSE;
+
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!(funcs =
+ (FBManagerFuncsPtr)resize->pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return FALSE;
+
+ return (*funcs->ResizeOffscreenArea)(resize, w, h);
+}
+
+Bool
+xf86ResizeOffscreenLinear(
+ FBLinearPtr resize,
+ int size
+){
+ FBManagerFuncsPtr funcs;
+
+ if(!resize) return FALSE;
+
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!(funcs =
+ (FBManagerFuncsPtr)resize->pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return FALSE;
+
+ return (*funcs->ResizeOffscreenLinear)(resize, size);
+}
+
+
+Bool
+xf86QueryLargestOffscreenArea(
+ ScreenPtr pScreen,
+ int *w, int *h,
+ int gran,
+ int preferences,
+ int severity
+){
+ FBManagerFuncsPtr funcs;
+
+ *w = 0;
+ *h = 0;
+
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return FALSE;
+
+ return (*funcs->QueryLargestOffscreenArea)(
+ pScreen, w, h, gran, preferences, severity);
+}
+
+Bool
+xf86QueryLargestOffscreenLinear(
+ ScreenPtr pScreen,
+ int *size,
+ int gran,
+ int severity
+){
+ FBManagerFuncsPtr funcs;
+
+ *size = 0;
+
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return FALSE;
+
+ return (*funcs->QueryLargestOffscreenLinear)(
+ pScreen, size, gran, severity);
+}
+
+
+Bool
+xf86PurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
+{
+ FBManagerFuncsPtr funcs;
+
+ if(xf86FBMangerIndex < 0)
+ return FALSE;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return FALSE;
+
+ return (*funcs->PurgeOffscreenAreas)(pScreen);
+}
+
+/************************************************************\
+
+ Below is a specific implementation of an offscreen manager.
+
+\************************************************************/
+
+static unsigned long xf86FBGeneration = 0;
+static int xf86FBScreenIndex = -1;
+
+typedef struct _FBLink {
+ FBArea area;
+ struct _FBLink *next;
+} FBLink, *FBLinkPtr;
+
+typedef struct _FBLinearLink {
+ FBLinear linear;
+ FBAreaPtr area;
+ struct _FBLinearLink *next;
+} FBLinearLink, *FBLinearLinkPtr;
+
+
+typedef struct {
+ ScreenPtr pScreen;
+ RegionPtr InitialBoxes;
+ RegionPtr FreeBoxes;
+ FBLinkPtr UsedAreas;
+ int NumUsedAreas;
+ FBLinearLinkPtr LinearAreas;
+ CloseScreenProcPtr CloseScreen;
+ int NumCallbacks;
+ FreeBoxCallbackProcPtr *FreeBoxesUpdateCallback;
+ DevUnion *devPrivates;
+} FBManager, *FBManagerPtr;
+
+
+static void
+SendCallFreeBoxCallbacks(FBManagerPtr offman)
+{
+ int i = offman->NumCallbacks;
+
+ while(i--) {
+ (*offman->FreeBoxesUpdateCallback[i])(
+ offman->pScreen, offman->FreeBoxes, offman->devPrivates[i].ptr);
+ }
+}
+
+static Bool
+localRegisterFreeBoxCallback(
+ ScreenPtr pScreen,
+ FreeBoxCallbackProcPtr FreeBoxCallback,
+ pointer devPriv
+){
+ FBManagerPtr offman;
+ FreeBoxCallbackProcPtr *newCallbacks;
+ DevUnion *newPrivates;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ newCallbacks = xrealloc( offman->FreeBoxesUpdateCallback,
+ sizeof(FreeBoxCallbackProcPtr) * (offman->NumCallbacks + 1));
+
+ newPrivates = xrealloc(offman->devPrivates,
+ sizeof(DevUnion) * (offman->NumCallbacks + 1));
+
+ if(!newCallbacks || !newPrivates)
+ return FALSE;
+
+ offman->FreeBoxesUpdateCallback = newCallbacks;
+ offman->devPrivates = newPrivates;
+
+ offman->FreeBoxesUpdateCallback[offman->NumCallbacks] = FreeBoxCallback;
+ offman->devPrivates[offman->NumCallbacks].ptr = devPriv;
+ offman->NumCallbacks++;
+
+ SendCallFreeBoxCallbacks(offman);
+
+ return TRUE;
+}
+
+
+static FBAreaPtr
+AllocateArea(
+ FBManagerPtr offman,
+ int w, int h,
+ int granularity,
+ MoveAreaCallbackProcPtr moveCB,
+ RemoveAreaCallbackProcPtr removeCB,
+ pointer privData
+){
+ ScreenPtr pScreen = offman->pScreen;
+ FBLinkPtr link = NULL;
+ FBAreaPtr area = NULL;
+ RegionRec NewReg;
+ int i, x = 0, num;
+ BoxPtr boxp;
+
+ if(granularity <= 1) granularity = 0;
+
+ boxp = REGION_RECTS(offman->FreeBoxes);
+ num = REGION_NUM_RECTS(offman->FreeBoxes);
+
+ /* look through the free boxes */
+ for(i = 0; i < num; i++, boxp++) {
+ x = boxp->x1;
+ if(granularity) {
+ int tmp = x % granularity;
+ if(tmp) x += (granularity - tmp);
+ }
+
+ if(((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w))
+ continue;
+
+ link = xalloc(sizeof(FBLink));
+ if(!link) return NULL;
+
+ area = &(link->area);
+ link->next = offman->UsedAreas;
+ offman->UsedAreas = link;
+ offman->NumUsedAreas++;
+ break;
+ }
+
+ /* try to boot a removeable one out if we are not expendable ourselves */
+ if(!area && !removeCB) {
+ link = offman->UsedAreas;
+
+ while(link) {
+ if(!link->area.RemoveAreaCallback) {
+ link = link->next;
+ continue;
+ }
+
+ boxp = &(link->area.box);
+ x = boxp->x1;
+ if(granularity) {
+ int tmp = x % granularity;
+ if(tmp) x += (granularity - tmp);
+ }
+
+ if(((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w)) {
+ link = link->next;
+ continue;
+ }
+
+ /* bye, bye */
+ (*link->area.RemoveAreaCallback)(&link->area);
+ REGION_INIT(pScreen, &NewReg, &(link->area.box), 1);
+ REGION_UNION(pScreen, offman->FreeBoxes, offman->FreeBoxes, &NewReg);
+ REGION_UNINIT(pScreen, &NewReg);
+
+ area = &(link->area);
+ break;
+ }
+ }
+
+ if(area) {
+ area->pScreen = pScreen;
+ area->granularity = granularity;
+ area->box.x1 = x;
+ area->box.x2 = x + w;
+ area->box.y1 = boxp->y1;
+ area->box.y2 = boxp->y1 + h;
+ area->MoveAreaCallback = moveCB;
+ area->RemoveAreaCallback = removeCB;
+ area->devPrivate.ptr = privData;
+
+ REGION_INIT(pScreen, &NewReg, &(area->box), 1);
+ REGION_SUBTRACT(pScreen, offman->FreeBoxes, offman->FreeBoxes, &NewReg);
+ REGION_UNINIT(pScreen, &NewReg);
+ }
+
+ return area;
+}
+
+static FBAreaPtr
+localAllocateOffscreenArea(
+ ScreenPtr pScreen,
+ int w, int h,
+ int gran,
+ MoveAreaCallbackProcPtr moveCB,
+ RemoveAreaCallbackProcPtr removeCB,
+ pointer privData
+){
+ FBManagerPtr offman;
+ FBAreaPtr area = NULL;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ if((area = AllocateArea(offman, w, h, gran, moveCB, removeCB, privData)))
+ SendCallFreeBoxCallbacks(offman);
+
+ return area;
+}
+
+
+static void
+localFreeOffscreenArea(FBAreaPtr area)
+{
+ FBManagerPtr offman;
+ FBLinkPtr pLink, pLinkPrev = NULL;
+ RegionRec FreedRegion;
+ ScreenPtr pScreen;
+
+ pScreen = area->pScreen;
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ pLink = offman->UsedAreas;
+ if(!pLink) return;
+
+ while(&(pLink->area) != area) {
+ pLinkPrev = pLink;
+ pLink = pLink->next;
+ if(!pLink) return;
+ }
+
+ /* put the area back into the pool */
+ REGION_INIT(pScreen, &FreedRegion, &(pLink->area.box), 1);
+ REGION_UNION(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedRegion);
+ REGION_UNINIT(pScreen, &FreedRegion);
+
+ if(pLinkPrev)
+ pLinkPrev->next = pLink->next;
+ else offman->UsedAreas = pLink->next;
+
+ xfree(pLink);
+ offman->NumUsedAreas--;
+
+ SendCallFreeBoxCallbacks(offman);
+}
+
+
+
+static Bool
+localResizeOffscreenArea(
+ FBAreaPtr resize,
+ int w, int h
+){
+ FBManagerPtr offman;
+ ScreenPtr pScreen;
+ BoxRec OrigArea;
+ RegionRec FreedReg;
+ FBAreaPtr area = NULL;
+ FBLinkPtr pLink, newLink, pLinkPrev = NULL;
+
+ pScreen = resize->pScreen;
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ /* find this link */
+ if(!(pLink = offman->UsedAreas))
+ return FALSE;
+
+ while(&(pLink->area) != resize) {
+ pLinkPrev = pLink;
+ pLink = pLink->next;
+ if(!pLink) return FALSE;
+ }
+
+ OrigArea.x1 = resize->box.x1;
+ OrigArea.x2 = resize->box.x2;
+ OrigArea.y1 = resize->box.y1;
+ OrigArea.y2 = resize->box.y2;
+
+ /* if it's smaller, this is easy */
+
+ if((w <= (resize->box.x2 - resize->box.x1)) &&
+ (h <= (resize->box.y2 - resize->box.y1))) {
+ RegionRec NewReg;
+
+ resize->box.x2 = resize->box.x1 + w;
+ resize->box.y2 = resize->box.y1 + h;
+
+ if((resize->box.y2 == OrigArea.y2) &&
+ (resize->box.x2 == OrigArea.x2))
+ return TRUE;
+
+ REGION_INIT(pScreen, &FreedReg, &OrigArea, 1);
+ REGION_INIT(pScreen, &NewReg, &(resize->box), 1);
+ REGION_SUBTRACT(pScreen, &FreedReg, &FreedReg, &NewReg);
+ REGION_UNION(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
+ REGION_UNINIT(pScreen, &FreedReg);
+ REGION_UNINIT(pScreen, &NewReg);
+
+ SendCallFreeBoxCallbacks(offman);
+
+ return TRUE;
+ }
+
+
+ /* otherwise we remove the old region */
+
+ REGION_INIT(pScreen, &FreedReg, &OrigArea, 1);
+ REGION_UNION(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
+
+ /* remove the old link */
+ if(pLinkPrev)
+ pLinkPrev->next = pLink->next;
+ else offman->UsedAreas = pLink->next;
+
+ /* and try to add a new one */
+
+ if((area = AllocateArea(offman, w, h, resize->granularity,
+ resize->MoveAreaCallback, resize->RemoveAreaCallback,
+ resize->devPrivate.ptr))) {
+
+ /* copy data over to our link and replace the new with old */
+ memcpy(resize, area, sizeof(FBArea));
+
+ pLinkPrev = NULL;
+ newLink = offman->UsedAreas;
+
+ while(&(newLink->area) != area) {
+ pLinkPrev = newLink;
+ newLink = newLink->next;
+ }
+
+ if(pLinkPrev)
+ pLinkPrev->next = newLink->next;
+ else offman->UsedAreas = newLink->next;
+
+ pLink->next = offman->UsedAreas;
+ offman->UsedAreas = pLink;
+
+ xfree(newLink);
+
+ /* AllocateArea added one but we really only exchanged one */
+ offman->NumUsedAreas--;
+ } else {
+ /* reinstate the old region */
+ REGION_SUBTRACT(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
+ REGION_UNINIT(pScreen, &FreedReg);
+
+ pLink->next = offman->UsedAreas;
+ offman->UsedAreas = pLink;
+ return FALSE;
+ }
+
+
+ REGION_UNINIT(pScreen, &FreedReg);
+
+ SendCallFreeBoxCallbacks(offman);
+
+ return TRUE;
+}
+
+static Bool
+localQueryLargestOffscreenArea(
+ ScreenPtr pScreen,
+ int *width, int *height,
+ int granularity,
+ int preferences,
+ int severity
+){
+ FBManagerPtr offman;
+ RegionPtr newRegion = NULL;
+ BoxPtr pbox;
+ int nbox;
+ int x, w, h, area, oldArea;
+
+ *width = *height = oldArea = 0;
+
+ if(granularity <= 1) granularity = 0;
+
+ if((preferences < 0) || (preferences > 3))
+ return FALSE;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ if(severity < 0) severity = 0;
+ if(severity > 2) severity = 2;
+
+ switch(severity) {
+ case 2:
+ if(offman->NumUsedAreas) {
+ FBLinkPtr pLink;
+ RegionRec tmpRegion;
+ newRegion = REGION_CREATE(pScreen, NULL, 1);
+ REGION_COPY(pScreen, newRegion, offman->InitialBoxes);
+ pLink = offman->UsedAreas;
+
+ while(pLink) {
+ if(!pLink->area.RemoveAreaCallback) {
+ REGION_INIT(pScreen, &tmpRegion, &(pLink->area.box), 1);
+ REGION_SUBTRACT(pScreen, newRegion, newRegion, &tmpRegion);
+ REGION_UNINIT(pScreen, &tmpRegion);
+ }
+ pLink = pLink->next;
+ }
+
+ nbox = REGION_NUM_RECTS(newRegion);
+ pbox = REGION_RECTS(newRegion);
+ break;
+ }
+ case 1:
+ if(offman->NumUsedAreas) {
+ FBLinkPtr pLink;
+ RegionRec tmpRegion;
+ newRegion = REGION_CREATE(pScreen, NULL, 1);
+ REGION_COPY(pScreen, newRegion, offman->FreeBoxes);
+ pLink = offman->UsedAreas;
+
+ while(pLink) {
+ if(pLink->area.RemoveAreaCallback) {
+ REGION_INIT(pScreen, &tmpRegion, &(pLink->area.box), 1);
+ REGION_APPEND(pScreen, newRegion, &tmpRegion);
+ REGION_UNINIT(pScreen, &tmpRegion);
+ }
+ pLink = pLink->next;
+ }
+
+ nbox = REGION_NUM_RECTS(newRegion);
+ pbox = REGION_RECTS(newRegion);
+ break;
+ }
+ default:
+ nbox = REGION_NUM_RECTS(offman->FreeBoxes);
+ pbox = REGION_RECTS(offman->FreeBoxes);
+ break;
+ }
+
+ while(nbox--) {
+ x = pbox->x1;
+ if(granularity) {
+ int tmp = x % granularity;
+ if(tmp) x += (granularity - tmp);
+ }
+
+ w = pbox->x2 - x;
+ h = pbox->y2 - pbox->y1;
+ area = w * h;
+
+ if(w > 0) {
+ Bool gotIt = FALSE;
+ switch(preferences) {
+ case FAVOR_AREA_THEN_WIDTH:
+ if((area > oldArea) || ((area == oldArea) && (w > *width)))
+ gotIt = TRUE;
+ break;
+ case FAVOR_AREA_THEN_HEIGHT:
+ if((area > oldArea) || ((area == oldArea) && (h > *height)))
+ gotIt = TRUE;
+ break;
+ case FAVOR_WIDTH_THEN_AREA:
+ if((w > *width) || ((w == *width) && (area > oldArea)))
+ gotIt = TRUE;
+ break;
+ case FAVOR_HEIGHT_THEN_AREA:
+ if((h > *height) || ((h == *height) && (area > oldArea)))
+ gotIt = TRUE;
+ break;
+ }
+ if(gotIt) {
+ *width = w;
+ *height = h;
+ oldArea = area;
+ }
+ }
+ pbox++;
+ }
+
+ if(newRegion)
+ REGION_DESTROY(pScreen, newRegion);
+
+ return TRUE;
+}
+
+static Bool
+localPurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
+{
+ FBManagerPtr offman;
+ FBLinkPtr pLink, tmp, pPrev = NULL;
+ RegionRec FreedRegion;
+ Bool anyUsed = FALSE;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ pLink = offman->UsedAreas;
+ if(!pLink) return TRUE;
+
+ while(pLink) {
+ if(pLink->area.RemoveAreaCallback) {
+ (*pLink->area.RemoveAreaCallback)(&pLink->area);
+
+ REGION_INIT(pScreen, &FreedRegion, &(pLink->area.box), 1);
+ REGION_APPEND(pScreen, offman->FreeBoxes, &FreedRegion);
+ REGION_UNINIT(pScreen, &FreedRegion);
+
+ if(pPrev)
+ pPrev->next = pLink->next;
+ else offman->UsedAreas = pLink->next;
+
+ tmp = pLink;
+ pLink = pLink->next;
+ xfree(tmp);
+ offman->NumUsedAreas--;
+ anyUsed = TRUE;
+ } else {
+ pPrev = pLink;
+ pLink = pLink->next;
+ }
+ }
+
+ if(anyUsed) {
+ REGION_VALIDATE(pScreen, offman->FreeBoxes, &anyUsed);
+ SendCallFreeBoxCallbacks(offman);
+ }
+
+ return TRUE;
+}
+
+static void
+LinearMoveCBWrapper(FBAreaPtr from, FBAreaPtr to)
+{
+ /* this will never get called */
+}
+
+static void
+LinearRemoveCBWrapper(FBAreaPtr area)
+{
+ FBManagerPtr offman;
+ FBLinearLinkPtr pLink, pLinkPrev = NULL;
+ ScreenPtr pScreen = area->pScreen;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ pLink = offman->LinearAreas;
+ if(!pLink) return;
+
+ while(pLink->area != area) {
+ pLinkPrev = pLink;
+ pLink = pLink->next;
+ if(!pLink) return;
+ }
+
+ /* give the user the callback it is expecting */
+ (*pLink->linear.RemoveLinearCallback)(&(pLink->linear));
+
+ if(pLinkPrev)
+ pLinkPrev->next = pLink->next;
+ else offman->LinearAreas = pLink->next;
+
+ xfree(pLink);
+}
+
+
+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;
+
+ if(!(link = xalloc(sizeof(FBLinearLink))))
+ return NULL;
+
+#if 0
+ if(we have linear heap space) {
+ if(able to allocate some) {
+ link->area = NULL;
+ link->next = offman->LinearAreas;
+ offman->LinearAreas = link;
+ linear = link->linear;
+ linear->pScreen = pScreen;
+ linear->size = length;
+ linear->offset = ????;
+ linear->granularity = gran;
+ linear->MoveLinearAreaCallback = moveCB;
+ linear->RemoveLinearAreaCallback = removeCB;
+ linear->devPrivate.ptr = privData;
+ return linear;
+ } /* else fallthrough */
+ }
+#endif
+
+ 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->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);
+
+ return linear;
+}
+
+
+static void
+localFreeOffscreenLinear(FBLinearPtr linear)
+{
+ FBManagerPtr offman;
+ FBLinearLinkPtr pLink, pLinkPrev = NULL;
+ ScreenPtr pScreen = linear->pScreen;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ pLink = offman->LinearAreas;
+ if(!pLink) return;
+
+ while(&(pLink->linear) != linear) {
+ pLinkPrev = pLink;
+ pLink = pLink->next;
+ if(!pLink) return;
+ }
+
+ if(pLink->area) { /* really an XY area */
+ localFreeOffscreenArea(pLink->area);
+ } else {
+ /* free the linear area */
+ }
+
+ if(pLinkPrev)
+ pLinkPrev->next = pLink->next;
+ else offman->LinearAreas = pLink->next;
+
+ xfree(pLink);
+}
+
+
+static Bool
+localResizeOffscreenLinear(FBLinearPtr resize, int length)
+{
+ FBManagerPtr offman;
+ FBLinearLinkPtr pLink, pLinkPrev = NULL;
+ ScreenPtr pScreen = resize->pScreen;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ pLink = offman->LinearAreas;
+ if(!pLink) return FALSE;
+
+ while(&(pLink->linear) != resize) {
+ pLinkPrev = pLink;
+ pLink = pLink->next;
+ if(!pLink) return FALSE;
+ }
+
+ /* This could actually be alot smarter and try to move allocations
+ from XY to linear when available. For now if it was XY, we keep
+ it XY */
+
+ if(pLink->area) { /* really an XY area */
+ BoxPtr extents;
+ int pitch, w, h;
+
+ extents = REGION_EXTENTS(pScreen, offman->InitialBoxes);
+ pitch = extents->x2 - extents->x1;
+
+ if(length < pitch) { /* special case */
+ w = length;
+ h = 1;
+ } else {
+ w = pitch;
+ h = (length + pitch - 1) / pitch;
+ }
+
+ if(localResizeOffscreenArea(pLink->area, w, h)) {
+ resize->size = h * w;
+ resize->offset = (pitch * pLink->area->box.y1) + pLink->area->box.x1;
+ return TRUE;
+ }
+ } else {
+ /* resize the linear area */
+ }
+
+ return FALSE;
+}
+
+
+static Bool
+localQueryLargestOffscreenLinear(
+ ScreenPtr pScreen,
+ int *size,
+ int gran,
+ int priority
+)
+{
+ int w, h;
+
+ *size = 0;
+
+ /* for now, we only look at XY space */
+ if(localQueryLargestOffscreenArea(pScreen, &w, &h, gran,
+ FAVOR_WIDTH_THEN_AREA, priority))
+ {
+ FBManagerPtr offman;
+ BoxPtr extents;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+ extents = REGION_EXTENTS(pScreen, offman->InitialBoxes);
+ if((extents->x2 - extents->x1) == w)
+ *size = w * h;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+
+static FBManagerFuncs xf86FBManFuncs = {
+ localAllocateOffscreenArea,
+ localFreeOffscreenArea,
+ localResizeOffscreenArea,
+ localQueryLargestOffscreenArea,
+ localRegisterFreeBoxCallback,
+ localAllocateOffscreenLinear,
+ localFreeOffscreenLinear,
+ localResizeOffscreenLinear,
+ localQueryLargestOffscreenLinear,
+ localPurgeUnlockedOffscreenAreas
+ };
+
+
+static Bool
+xf86FBCloseScreen (int i, ScreenPtr pScreen)
+{
+ FBLinkPtr pLink, tmp;
+ FBLinearLinkPtr pLinearLink, tmp2;
+ FBManagerPtr offman =
+ (FBManagerPtr) pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+
+ pScreen->CloseScreen = offman->CloseScreen;
+
+ pLink = offman->UsedAreas;
+ while(pLink) {
+ tmp = pLink;
+ pLink = pLink->next;
+ xfree(tmp);
+ }
+
+ pLinearLink = offman->LinearAreas;
+ while(pLinearLink) {
+ tmp2 = pLinearLink;
+ pLinearLink = pLinearLink->next;
+ xfree(tmp2);
+ }
+
+ REGION_DESTROY(pScreen, offman->InitialBoxes);
+ REGION_DESTROY(pScreen, offman->FreeBoxes);
+
+ xfree(offman->FreeBoxesUpdateCallback);
+ xfree(offman->devPrivates);
+ xfree(offman);
+ pScreen->devPrivates[xf86FBScreenIndex].ptr = NULL;
+
+ return (*pScreen->CloseScreen) (i, pScreen);
+}
+
+Bool
+xf86InitFBManager(
+ ScreenPtr pScreen,
+ BoxPtr FullBox
+){
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+ RegionRec ScreenRegion;
+ RegionRec FullRegion;
+ BoxRec ScreenBox;
+ Bool ret;
+
+ ScreenBox.x1 = 0;
+ ScreenBox.y1 = 0;
+ ScreenBox.x2 = pScrn->virtualX;
+ ScreenBox.y2 = pScrn->virtualY;
+
+ if((FullBox->x1 > ScreenBox.x1) || (FullBox->y1 > ScreenBox.y1) ||
+ (FullBox->x2 < ScreenBox.x2) || (FullBox->y2 < ScreenBox.y2)) {
+ return FALSE;
+ }
+
+ if (FullBox->y2 < FullBox->y1) return FALSE;
+ if (FullBox->x2 < FullBox->x2) return FALSE;
+
+ REGION_INIT(pScreen, &ScreenRegion, &ScreenBox, 1);
+ REGION_INIT(pScreen, &FullRegion, FullBox, 1);
+
+ REGION_SUBTRACT(pScreen, &FullRegion, &FullRegion, &ScreenRegion);
+
+ ret = xf86InitFBManagerRegion(pScreen, &FullRegion);
+
+ REGION_UNINIT(pScreen, &ScreenRegion);
+ REGION_UNINIT(pScreen, &FullRegion);
+
+ return ret;
+}
+
+Bool
+xf86InitFBManagerArea(
+ ScreenPtr pScreen,
+ int PixelArea,
+ int Verbosity
+)
+{
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+ xRectangle Rect[3];
+ RegionPtr pRegion, pScreenRegion;
+ int nRect;
+ Bool ret = FALSE;
+
+ if (PixelArea < (pScrn->displayWidth * pScrn->virtualY))
+ return FALSE;
+
+ Rect[0].x = Rect[0].y = 0;
+ Rect[0].width = pScrn->displayWidth;
+ Rect[0].height = PixelArea / pScrn->displayWidth;
+ nRect = 1;
+
+ /* Add a possible partial scanline */
+ if ((Rect[1].height = Rect[1].width = PixelArea % pScrn->displayWidth)) {
+ Rect[1].x = 0;
+ Rect[1].y = Rect[0].height;
+ Rect[1].height = 1;
+ nRect++;
+ }
+
+ /* Factor out virtual resolution */
+ pRegion = RECTS_TO_REGION(pScreen, nRect, Rect, 0);
+ if (pRegion) {
+ if (!REGION_NAR(pRegion)) {
+ Rect[2].x = Rect[2].y = 0;
+ Rect[2].width = pScrn->virtualX;
+ Rect[2].height = pScrn->virtualY;
+
+ pScreenRegion = RECTS_TO_REGION(pScreen, 1, &Rect[2], 0);
+ if (pScreenRegion) {
+ if (!REGION_NAR(pScreenRegion)) {
+ REGION_SUBTRACT(pScreen, pRegion, pRegion, pScreenRegion);
+
+ ret = xf86InitFBManagerRegion(pScreen, pRegion);
+
+ if (ret && xf86GetVerbosity() >= Verbosity) {
+ int scrnIndex = pScrn->scrnIndex;
+
+ xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
+ "Largest offscreen areas (with overlaps):\n");
+
+ if (Rect[2].width < Rect[0].width) {
+ xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
+ "\t%d x %d rectangle at %d,0\n",
+ Rect[0].width - Rect[2].width,
+ Rect[0].height,
+ Rect[2].width);
+ }
+ if (Rect[2].width < Rect[1].width) {
+ xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
+ "\t%d x %d rectangle at %d,0\n",
+ Rect[1].width - Rect[2].width,
+ Rect[0].height + Rect[1].height,
+ Rect[2].width);
+ }
+ if (Rect[2].height < Rect[0].height) {
+ xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
+ "\t%d x %d rectangle at 0,%d\n",
+ Rect[0].width,
+ Rect[0].height - Rect[2].height,
+ Rect[2].height);
+ }
+ if (Rect[1].height) {
+ xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
+ "\t%d x %d rectangle at 0,%d\n",
+ Rect[1].width,
+ Rect[0].height - Rect[2].height +
+ Rect[1].height,
+ Rect[2].height);
+ }
+ }
+ }
+
+ REGION_DESTROY(pScreen, pScreenRegion);
+ }
+ }
+
+ REGION_DESTROY(pScreen, pRegion);
+ }
+
+ return ret;
+}
+
+Bool
+xf86InitFBManagerRegion(
+ ScreenPtr pScreen,
+ RegionPtr FullRegion
+){
+ FBManagerPtr offman;
+
+ if(REGION_NIL(FullRegion))
+ return FALSE;
+
+ if(xf86FBGeneration != serverGeneration) {
+ if((xf86FBScreenIndex = AllocateScreenPrivateIndex()) < 0)
+ return FALSE;
+ xf86FBGeneration = serverGeneration;
+ }
+
+ if(!xf86RegisterOffscreenManager(pScreen, &xf86FBManFuncs))
+ return FALSE;
+
+ offman = xalloc(sizeof(FBManager));
+ if(!offman) return FALSE;
+
+ pScreen->devPrivates[xf86FBScreenIndex].ptr = (pointer)offman;
+
+ offman->CloseScreen = pScreen->CloseScreen;
+ pScreen->CloseScreen = xf86FBCloseScreen;
+
+ offman->InitialBoxes = REGION_CREATE(pScreen, NULL, 1);
+ offman->FreeBoxes = REGION_CREATE(pScreen, NULL, 1);
+
+ REGION_COPY(pScreen, offman->InitialBoxes, FullRegion);
+ REGION_COPY(pScreen, offman->FreeBoxes, FullRegion);
+
+ offman->pScreen = pScreen;
+ offman->UsedAreas = NULL;
+ offman->LinearAreas = NULL;
+ offman->NumUsedAreas = 0;
+ offman->NumCallbacks = 0;
+ offman->FreeBoxesUpdateCallback = NULL;
+ offman->devPrivates = NULL;
+
+ return TRUE;
+}
+
+
+
+/* This is an implementation specific function and should
+ disappear after the next release. People should use the
+ real linear functions instead */
+
+FBAreaPtr
+xf86AllocateLinearOffscreenArea (
+ ScreenPtr pScreen,
+ int length,
+ int gran,
+ MoveAreaCallbackProcPtr moveCB,
+ RemoveAreaCallbackProcPtr removeCB,
+ pointer privData
+){
+ FBManagerFuncsPtr funcs;
+ FBManagerPtr offman;
+ BoxPtr extents;
+ int w, h;
+
+ if(xf86FBMangerIndex < 0)
+ return NULL;
+ if(!(funcs = (FBManagerFuncsPtr)pScreen->devPrivates[xf86FBMangerIndex].ptr))
+ return NULL;
+
+ offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
+
+ extents = REGION_EXTENTS(pScreen, offman->InitialBoxes);
+ w = extents->x2 - extents->x1;
+
+ if(gran && ((gran > w) || (w % gran))) {
+ /* we can't match the specified alignment with XY allocations */
+ return NULL;
+ }
+
+ if(length <= w) { /* special case */
+ h = 1;
+ w = length;
+ } else {
+ h = (length + w - 1) / w;
+ }
+
+ return (*funcs->AllocateOffscreenArea)(
+ pScreen, w, h, gran, moveCB, removeCB, privData);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 20:20:00 +0000