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Diffstat (limited to 'xorg-server/hw/xfree86/common/xf86fbman.c')
-rw-r--r--xorg-server/hw/xfree86/common/xf86fbman.c2877
1 files changed, 1431 insertions, 1446 deletions
diff --git a/xorg-server/hw/xfree86/common/xf86fbman.c b/xorg-server/hw/xfree86/common/xf86fbman.c
index ccb761a2c..3c29bf531 100644
--- a/xorg-server/hw/xfree86/common/xf86fbman.c
+++ b/xorg-server/hw/xfree86/common/xf86fbman.c
@@ -1,1446 +1,1431 @@
-
-/*
- * Copyright (c) 1998-2001 by The XFree86 Project, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name of the copyright holder(s)
- * and author(s) shall not be used in advertising or otherwise to promote
- * the sale, use or other dealings in this Software without prior written
- * authorization from the copyright holder(s) and author(s).
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include "misc.h"
-#include "xf86.h"
-
-#include <X11/X.h>
-#include "scrnintstr.h"
-#include "regionstr.h"
-#include "xf86fbman.h"
-
-/*
-#define DEBUG
-*/
-
-static DevPrivateKeyRec xf86FBManagerKeyRec;
-static DevPrivateKey xf86FBManagerKey;
-
-Bool xf86RegisterOffscreenManager(
- ScreenPtr pScreen,
- FBManagerFuncsPtr funcs
-){
-
- xf86FBManagerKey = &xf86FBManagerKeyRec;
-
- if (!dixRegisterPrivateKey(&xf86FBManagerKeyRec, PRIVATE_SCREEN, 0))
- return FALSE;
-
- dixSetPrivate(&pScreen->devPrivates, xf86FBManagerKey, funcs);
-
- return TRUE;
-}
-
-
-Bool
-xf86FBManagerRunning(ScreenPtr pScreen)
-{
- if (xf86FBManagerKey == NULL)
- return FALSE;
-
- if(!dixLookupPrivate(&pScreen->devPrivates, xf86FBManagerKey))
- return FALSE;
-
- return TRUE;
-}
-
-Bool
-xf86RegisterFreeBoxCallback(
- ScreenPtr pScreen,
- FreeBoxCallbackProcPtr FreeBoxCallback,
- pointer devPriv
-){
- FBManagerFuncsPtr funcs;
-
- if(xf86FBManagerKey == NULL)
- return FALSE;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- 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(xf86FBManagerKey == NULL)
- return NULL;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- 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(xf86FBManagerKey == NULL)
- return NULL;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- return NULL;
-
- return (*funcs->AllocateOffscreenLinear)(
- pScreen, length, gran, moveCB, removeCB, privData);
-}
-
-
-void
-xf86FreeOffscreenArea(FBAreaPtr area)
-{
- FBManagerFuncsPtr funcs;
-
- if(!area) return;
-
- if(xf86FBManagerKey == NULL)
- return;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(
- &area->pScreen->devPrivates, xf86FBManagerKey)))
- return;
-
- (*funcs->FreeOffscreenArea)(area);
-
- return;
-}
-
-
-void
-xf86FreeOffscreenLinear(FBLinearPtr linear)
-{
- FBManagerFuncsPtr funcs;
-
- if(!linear) return;
-
- if(xf86FBManagerKey == NULL)
- return;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(
- &linear->pScreen->devPrivates, xf86FBManagerKey)))
- return;
-
- (*funcs->FreeOffscreenLinear)(linear);
-
- return;
-}
-
-
-Bool
-xf86ResizeOffscreenArea(
- FBAreaPtr resize,
- int w, int h
-){
- FBManagerFuncsPtr funcs;
-
- if(!resize) return FALSE;
-
- if(xf86FBManagerKey == NULL)
- return FALSE;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(
- &resize->pScreen->devPrivates, xf86FBManagerKey)))
- return FALSE;
-
- return (*funcs->ResizeOffscreenArea)(resize, w, h);
-}
-
-Bool
-xf86ResizeOffscreenLinear(
- FBLinearPtr resize,
- int size
-){
- FBManagerFuncsPtr funcs;
-
- if(!resize) return FALSE;
-
- if(xf86FBManagerKey == NULL)
- return FALSE;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(
- &resize->pScreen->devPrivates, xf86FBManagerKey)))
- 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(xf86FBManagerKey == NULL)
- return FALSE;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- 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(xf86FBManagerKey == NULL)
- return FALSE;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- return FALSE;
-
- return (*funcs->QueryLargestOffscreenLinear)(
- pScreen, size, gran, severity);
-}
-
-
-Bool
-xf86PurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
-{
- FBManagerFuncsPtr funcs;
-
- if(xf86FBManagerKey == NULL)
- return FALSE;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- return FALSE;
-
- return (*funcs->PurgeOffscreenAreas)(pScreen);
-}
-
-/************************************************************\
-
- Below is a specific implementation of an offscreen manager.
-
-\************************************************************/
-
-static DevPrivateKeyRec xf86FBScreenKeyRec;
-#define xf86FBScreenKey (&xf86FBScreenKeyRec)
-
-typedef struct _FBLink {
- FBArea area;
- struct _FBLink *next;
-} FBLink, *FBLinkPtr;
-
-typedef struct _FBLinearLink {
- FBLinear linear;
- int free; /* need to add free here as FBLinear is publicly accessible */
- FBAreaPtr area; /* only used if allocation came from XY 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 = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- newCallbacks = realloc( offman->FreeBoxesUpdateCallback,
- sizeof(FreeBoxCallbackProcPtr) * (offman->NumCallbacks + 1));
-
- newPrivates = realloc(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 = RegionRects(offman->FreeBoxes);
- num = RegionNumRects(offman->FreeBoxes);
-
- /* look through the free boxes */
- for(i = 0; i < num; i++, boxp++) {
- x = boxp->x1;
- if (granularity > 1)
- x = ((x + granularity - 1) / granularity) * granularity;
-
- if(((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w))
- continue;
-
- link = malloc(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 > 1)
- x = ((x + granularity - 1) / granularity) * granularity;
-
- if(((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w)) {
- link = link->next;
- continue;
- }
-
- /* bye, bye */
- (*link->area.RemoveAreaCallback)(&link->area);
- RegionInit(&NewReg, &(link->area.box), 1);
- RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &NewReg);
- RegionUninit(&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;
-
- RegionInit(&NewReg, &(area->box), 1);
- RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &NewReg);
- RegionUninit(&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 = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- 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 = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- 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 */
- RegionInit(&FreedRegion, &(pLink->area.box), 1);
- RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedRegion);
- RegionUninit(&FreedRegion);
-
- if(pLinkPrev)
- pLinkPrev->next = pLink->next;
- else offman->UsedAreas = pLink->next;
-
- free(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 = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- /* 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;
-
- RegionInit(&FreedReg, &OrigArea, 1);
- RegionInit(&NewReg, &(resize->box), 1);
- RegionSubtract(&FreedReg, &FreedReg, &NewReg);
- RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
- RegionUninit(&FreedReg);
- RegionUninit(&NewReg);
-
- SendCallFreeBoxCallbacks(offman);
-
- return TRUE;
- }
-
-
- /* otherwise we remove the old region */
-
- RegionInit(&FreedReg, &OrigArea, 1);
- RegionUnion(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;
-
- free(newLink);
-
- /* AllocateArea added one but we really only exchanged one */
- offman->NumUsedAreas--;
- } else {
- /* reinstate the old region */
- RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
- RegionUninit(&FreedReg);
-
- pLink->next = offman->UsedAreas;
- offman->UsedAreas = pLink;
- return FALSE;
- }
-
-
- RegionUninit(&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 = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- if(severity < 0) severity = 0;
- if(severity > 2) severity = 2;
-
- switch(severity) {
- case 2:
- if(offman->NumUsedAreas) {
- FBLinkPtr pLink;
- RegionRec tmpRegion;
- newRegion = RegionCreate(NULL, 1);
- RegionCopy(newRegion, offman->InitialBoxes);
- pLink = offman->UsedAreas;
-
- while(pLink) {
- if(!pLink->area.RemoveAreaCallback) {
- RegionInit(&tmpRegion, &(pLink->area.box), 1);
- RegionSubtract(newRegion, newRegion, &tmpRegion);
- RegionUninit(&tmpRegion);
- }
- pLink = pLink->next;
- }
-
- nbox = RegionNumRects(newRegion);
- pbox = RegionRects(newRegion);
- break;
- }
- case 1:
- if(offman->NumUsedAreas) {
- FBLinkPtr pLink;
- RegionRec tmpRegion;
- newRegion = RegionCreate(NULL, 1);
- RegionCopy(newRegion, offman->FreeBoxes);
- pLink = offman->UsedAreas;
-
- while(pLink) {
- if(pLink->area.RemoveAreaCallback) {
- RegionInit(&tmpRegion, &(pLink->area.box), 1);
- RegionAppend(newRegion, &tmpRegion);
- RegionUninit(&tmpRegion);
- }
- pLink = pLink->next;
- }
-
- nbox = RegionNumRects(newRegion);
- pbox = RegionRects(newRegion);
- break;
- }
- default:
- nbox = RegionNumRects(offman->FreeBoxes);
- pbox = RegionRects(offman->FreeBoxes);
- break;
- }
-
- while(nbox--) {
- x = pbox->x1;
- if (granularity > 1)
- x = ((x + granularity - 1) / granularity) * granularity;
-
- 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)
- RegionDestroy(newRegion);
-
- return TRUE;
-}
-
-static Bool
-localPurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
-{
- FBManagerPtr offman;
- FBLinkPtr pLink, tmp, pPrev = NULL;
- RegionRec FreedRegion;
- Bool anyUsed = FALSE;
-
- offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- pLink = offman->UsedAreas;
- if(!pLink) return TRUE;
-
- while(pLink) {
- if(pLink->area.RemoveAreaCallback) {
- (*pLink->area.RemoveAreaCallback)(&pLink->area);
-
- RegionInit(&FreedRegion, &(pLink->area.box), 1);
- RegionAppend(offman->FreeBoxes, &FreedRegion);
- RegionUninit(&FreedRegion);
-
- if(pPrev)
- pPrev->next = pLink->next;
- else offman->UsedAreas = pLink->next;
-
- tmp = pLink;
- pLink = pLink->next;
- free(tmp);
- offman->NumUsedAreas--;
- anyUsed = TRUE;
- } else {
- pPrev = pLink;
- pLink = pLink->next;
- }
- }
-
- if(anyUsed) {
- RegionValidate(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 = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- 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;
-
- free(pLink);
-}
-
-static void
-DumpDebug(FBLinearLinkPtr pLink)
-{
-#ifdef DEBUG
- if (!pLink) ErrorF("MMmm, PLINK IS NULL!\n");
-
- while (pLink) {
- ErrorF(" Offset:%08x, Size:%08x, %s,%s\n",
- pLink->linear.offset,
- pLink->linear.size,
- pLink->free ? "Free" : "Used",
- pLink->area ? "Area" : "Linear");
-
- pLink = pLink->next;
- }
-#endif
-}
-
-static FBLinearPtr
-AllocateLinear(
- FBManagerPtr offman,
- int size,
- int granularity,
- pointer privData
-){
- ScreenPtr pScreen = offman->pScreen;
- FBLinearLinkPtr linear = NULL;
- FBLinearLinkPtr newlink = NULL;
- int offset, end;
-
- if(size <= 0) return NULL;
-
- if (!offman->LinearAreas) return NULL;
-
- linear = offman->LinearAreas;
- while (linear) {
- /* Make sure we get a free area that's not an XY fallback case */
- if (!linear->area && linear->free) {
- offset = linear->linear.offset;
- if (granularity > 1)
- offset = ((offset + granularity - 1) / granularity) * granularity;
- end = offset+size;
- if (end <= (linear->linear.offset + linear->linear.size))
- break;
- }
- linear = linear->next;
- }
- if (!linear)
- return NULL;
-
- /* break left */
- if (offset > linear->linear.offset) {
- newlink = malloc(sizeof(FBLinearLink));
- if (!newlink)
- return NULL;
- newlink->area = NULL;
- newlink->linear.offset = offset;
- newlink->linear.size = linear->linear.size - (offset - linear->linear.offset);
- newlink->free = 1;
- newlink->next = linear->next;
- linear->linear.size -= newlink->linear.size;
- linear->next = newlink;
- linear = newlink;
- }
-
- /* break right */
- if (size < linear->linear.size) {
- newlink = malloc(sizeof(FBLinearLink));
- if (!newlink)
- return NULL;
- newlink->area = NULL;
- newlink->linear.offset = offset + size;
- newlink->linear.size = linear->linear.size - size;
- newlink->free = 1;
- newlink->next = linear->next;
- linear->linear.size = size;
- linear->next = newlink;
- }
-
- /* p = middle block */
- linear->linear.granularity = granularity;
- linear->free = 0;
- linear->linear.pScreen = pScreen;
- linear->linear.MoveLinearCallback = NULL;
- linear->linear.RemoveLinearCallback = NULL;
- linear->linear.devPrivate.ptr = NULL;
-
- DumpDebug(offman->LinearAreas);
-
- return &(linear->linear);
-}
-
-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 = (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;
-}
-
-
-static void
-localFreeOffscreenLinear(FBLinearPtr linear)
-{
- FBManagerPtr offman;
- FBLinearLinkPtr pLink, pLinkPrev = NULL;
- ScreenPtr pScreen = linear->pScreen;
-
- offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- 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 */
- DebugF("FREEING AREA\n");
- localFreeOffscreenArea(pLink->area);
- if(pLinkPrev)
- pLinkPrev->next = pLink->next;
- else offman->LinearAreas = pLink->next;
- free(pLink);
- DumpDebug(offman->LinearAreas);
- return;
- }
-
- pLink->free = 1;
-
- if (pLink->next && pLink->next->free) {
- FBLinearLinkPtr p = pLink->next;
- pLink->linear.size += p->linear.size;
- pLink->next = p->next;
- free(p);
- }
-
- if(pLinkPrev) {
- if (pLinkPrev->next && pLinkPrev->next->free && !pLinkPrev->area) {
- FBLinearLinkPtr p = pLinkPrev->next;
- pLinkPrev->linear.size += p->linear.size;
- pLinkPrev->next = p->next;
- free(p);
- }
- }
-
- DebugF("FREEING LINEAR\n");
- DumpDebug(offman->LinearAreas);
-}
-
-
-static Bool
-localResizeOffscreenLinear(FBLinearPtr resize, int length)
-{
- FBManagerPtr offman;
- FBLinearLinkPtr pLink;
- ScreenPtr pScreen = resize->pScreen;
-
- offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- pLink = offman->LinearAreas;
- if(!pLink) return FALSE;
-
- while(&(pLink->linear) != resize) {
- 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 = RegionExtents(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 {
- /* TODO!!!! resize the linear area */
- }
-
- return FALSE;
-}
-
-
-static Bool
-localQueryLargestOffscreenLinear(
- ScreenPtr pScreen,
- int *size,
- int gran,
- int priority
-)
-{
- FBManagerPtr offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- FBLinearLinkPtr pLink;
- FBLinearLinkPtr pLinkRet;
-
- *size = 0;
-
- pLink = offman->LinearAreas;
-
- if (pLink && !pLink->area) {
- pLinkRet = pLink;
- while (pLink) {
- if (pLink->free) {
- if (pLink->linear.size > pLinkRet->linear.size)
- pLinkRet = pLink;
- }
- pLink = pLink->next;
- }
-
- if (pLinkRet->free) {
- *size = pLinkRet->linear.size;
- return TRUE;
- }
- } else {
- int w, h;
-
- if(localQueryLargestOffscreenArea(pScreen, &w, &h, gran,
- FAVOR_WIDTH_THEN_AREA, priority))
- {
- FBManagerPtr offman;
- BoxPtr extents;
-
- offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- extents = RegionExtents(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)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
-
- pScreen->CloseScreen = offman->CloseScreen;
-
- pLink = offman->UsedAreas;
- while(pLink) {
- tmp = pLink;
- pLink = pLink->next;
- free(tmp);
- }
-
- pLinearLink = offman->LinearAreas;
- while(pLinearLink) {
- tmp2 = pLinearLink;
- pLinearLink = pLinearLink->next;
- free(tmp2);
- }
-
- RegionDestroy(offman->InitialBoxes);
- RegionDestroy(offman->FreeBoxes);
-
- free(offman->FreeBoxesUpdateCallback);
- free(offman->devPrivates);
- free(offman);
- dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, 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->x1) return FALSE;
-
- RegionInit(&ScreenRegion, &ScreenBox, 1);
- RegionInit(&FullRegion, FullBox, 1);
-
- RegionSubtract(&FullRegion, &FullRegion, &ScreenRegion);
-
- ret = xf86InitFBManagerRegion(pScreen, &FullRegion);
-
- RegionUninit(&ScreenRegion);
- RegionUninit(&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 = RegionFromRects(nRect, Rect, 0);
- if (pRegion) {
- if (!RegionNar(pRegion)) {
- Rect[2].x = Rect[2].y = 0;
- Rect[2].width = pScrn->virtualX;
- Rect[2].height = pScrn->virtualY;
-
- pScreenRegion = RegionFromRects(1, &Rect[2], 0);
- if (pScreenRegion) {
- if (!RegionNar(pScreenRegion)) {
- RegionSubtract(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);
- }
- }
- }
-
- RegionDestroy(pScreenRegion);
- }
- }
-
- RegionDestroy(pRegion);
- }
-
- return ret;
-}
-
-Bool
-xf86InitFBManagerRegion(
- ScreenPtr pScreen,
- RegionPtr FullRegion
-){
- FBManagerPtr offman;
-
- if(RegionNil(FullRegion))
- return FALSE;
-
- if (!dixRegisterPrivateKey(&xf86FBScreenKeyRec, PRIVATE_SCREEN, 0))
- return FALSE;
-
- if(!xf86RegisterOffscreenManager(pScreen, &xf86FBManFuncs))
- return FALSE;
-
- offman = malloc(sizeof(FBManager));
- if(!offman) return FALSE;
-
- dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, offman);
-
- offman->CloseScreen = pScreen->CloseScreen;
- pScreen->CloseScreen = xf86FBCloseScreen;
-
- offman->InitialBoxes = RegionCreate(NULL, 1);
- offman->FreeBoxes = RegionCreate(NULL, 1);
-
- RegionCopy(offman->InitialBoxes, FullRegion);
- RegionCopy(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;
-}
-
-Bool
-xf86InitFBManagerLinear(
- ScreenPtr pScreen,
- int offset,
- int size
-){
- FBManagerPtr offman;
- FBLinearLinkPtr link;
- FBLinearPtr linear;
-
- if (size <= 0)
- return FALSE;
-
- /* we expect people to have called the Area setup first for pixmap cache */
- if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBScreenKey))
- return FALSE;
-
- offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- offman->LinearAreas = malloc(sizeof(FBLinearLink));
- if (!offman->LinearAreas)
- return FALSE;
-
- link = offman->LinearAreas;
- link->area = NULL;
- link->next = NULL;
- link->free = 1;
- linear = &(link->linear);
- linear->pScreen = pScreen;
- linear->size = size;
- linear->offset = offset;
- linear->granularity = 0;
- linear->MoveLinearCallback = NULL;
- linear->RemoveLinearCallback = NULL;
- linear->devPrivate.ptr = 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(xf86FBManagerKey == NULL)
- return NULL;
- if(!(funcs = (FBManagerFuncsPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBManagerKey)))
- return NULL;
-
- offman = (FBManagerPtr)dixLookupPrivate(&pScreen->devPrivates,
- xf86FBScreenKey);
- extents = RegionExtents(offman->InitialBoxes);
- w = extents->x2 - extents->x1;
-
- if (gran > 1) {
- if (gran > w)
- return NULL;
-
- if (w % gran)
- length += gran - 1;
- }
-
- 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);
-}
+
+/*
+ * Copyright (c) 1998-2001 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "misc.h"
+#include "xf86.h"
+
+#include <X11/X.h>
+#include "scrnintstr.h"
+#include "regionstr.h"
+#include "xf86fbman.h"
+
+/*
+#define DEBUG
+*/
+
+static DevPrivateKeyRec xf86FBManagerKeyRec;
+static DevPrivateKey xf86FBManagerKey;
+
+Bool
+xf86RegisterOffscreenManager(ScreenPtr pScreen, FBManagerFuncsPtr funcs)
+{
+
+ xf86FBManagerKey = &xf86FBManagerKeyRec;
+
+ if (!dixRegisterPrivateKey(&xf86FBManagerKeyRec, PRIVATE_SCREEN, 0))
+ return FALSE;
+
+ dixSetPrivate(&pScreen->devPrivates, xf86FBManagerKey, funcs);
+
+ return TRUE;
+}
+
+Bool
+xf86FBManagerRunning(ScreenPtr pScreen)
+{
+ if (xf86FBManagerKey == NULL)
+ return FALSE;
+
+ if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBManagerKey))
+ return FALSE;
+
+ return TRUE;
+}
+
+Bool
+xf86RegisterFreeBoxCallback(ScreenPtr pScreen,
+ FreeBoxCallbackProcPtr FreeBoxCallback,
+ pointer devPriv)
+{
+ FBManagerFuncsPtr funcs;
+
+ if (xf86FBManagerKey == NULL)
+ return FALSE;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ 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 (xf86FBManagerKey == NULL)
+ return NULL;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ 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 (xf86FBManagerKey == NULL)
+ return NULL;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return NULL;
+
+ return (*funcs->AllocateOffscreenLinear) (pScreen, length, gran, moveCB,
+ removeCB, privData);
+}
+
+void
+xf86FreeOffscreenArea(FBAreaPtr area)
+{
+ FBManagerFuncsPtr funcs;
+
+ if (!area)
+ return;
+
+ if (xf86FBManagerKey == NULL)
+ return;
+ if (!
+ (funcs =
+ (FBManagerFuncsPtr) dixLookupPrivate(&area->pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return;
+
+ (*funcs->FreeOffscreenArea) (area);
+
+ return;
+}
+
+void
+xf86FreeOffscreenLinear(FBLinearPtr linear)
+{
+ FBManagerFuncsPtr funcs;
+
+ if (!linear)
+ return;
+
+ if (xf86FBManagerKey == NULL)
+ return;
+ if (!
+ (funcs =
+ (FBManagerFuncsPtr) dixLookupPrivate(&linear->pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return;
+
+ (*funcs->FreeOffscreenLinear) (linear);
+
+ return;
+}
+
+Bool
+xf86ResizeOffscreenArea(FBAreaPtr resize, int w, int h)
+{
+ FBManagerFuncsPtr funcs;
+
+ if (!resize)
+ return FALSE;
+
+ if (xf86FBManagerKey == NULL)
+ return FALSE;
+ if (!
+ (funcs =
+ (FBManagerFuncsPtr) dixLookupPrivate(&resize->pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return FALSE;
+
+ return (*funcs->ResizeOffscreenArea) (resize, w, h);
+}
+
+Bool
+xf86ResizeOffscreenLinear(FBLinearPtr resize, int size)
+{
+ FBManagerFuncsPtr funcs;
+
+ if (!resize)
+ return FALSE;
+
+ if (xf86FBManagerKey == NULL)
+ return FALSE;
+ if (!
+ (funcs =
+ (FBManagerFuncsPtr) dixLookupPrivate(&resize->pScreen->devPrivates,
+ xf86FBManagerKey)))
+ 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 (xf86FBManagerKey == NULL)
+ return FALSE;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ 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 (xf86FBManagerKey == NULL)
+ return FALSE;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return FALSE;
+
+ return (*funcs->QueryLargestOffscreenLinear) (pScreen, size, gran,
+ severity);
+}
+
+Bool
+xf86PurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
+{
+ FBManagerFuncsPtr funcs;
+
+ if (xf86FBManagerKey == NULL)
+ return FALSE;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return FALSE;
+
+ return (*funcs->PurgeOffscreenAreas) (pScreen);
+}
+
+/************************************************************\
+
+ Below is a specific implementation of an offscreen manager.
+
+\************************************************************/
+
+static DevPrivateKeyRec xf86FBScreenKeyRec;
+
+#define xf86FBScreenKey (&xf86FBScreenKeyRec)
+
+typedef struct _FBLink {
+ FBArea area;
+ struct _FBLink *next;
+} FBLink, *FBLinkPtr;
+
+typedef struct _FBLinearLink {
+ FBLinear linear;
+ int free; /* need to add free here as FBLinear is publicly accessible */
+ FBAreaPtr area; /* only used if allocation came from XY 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 = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ newCallbacks = realloc(offman->FreeBoxesUpdateCallback,
+ sizeof(FreeBoxCallbackProcPtr) *
+ (offman->NumCallbacks + 1));
+
+ newPrivates = realloc(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 = RegionRects(offman->FreeBoxes);
+ num = RegionNumRects(offman->FreeBoxes);
+
+ /* look through the free boxes */
+ for (i = 0; i < num; i++, boxp++) {
+ x = boxp->x1;
+ if (granularity > 1)
+ x = ((x + granularity - 1) / granularity) * granularity;
+
+ if (((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w))
+ continue;
+
+ link = malloc(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 > 1)
+ x = ((x + granularity - 1) / granularity) * granularity;
+
+ if (((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w)) {
+ link = link->next;
+ continue;
+ }
+
+ /* bye, bye */
+ (*link->area.RemoveAreaCallback) (&link->area);
+ RegionInit(&NewReg, &(link->area.box), 1);
+ RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &NewReg);
+ RegionUninit(&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;
+
+ RegionInit(&NewReg, &(area->box), 1);
+ RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &NewReg);
+ RegionUninit(&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 = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ 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 = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ 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 */
+ RegionInit(&FreedRegion, &(pLink->area.box), 1);
+ RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedRegion);
+ RegionUninit(&FreedRegion);
+
+ if (pLinkPrev)
+ pLinkPrev->next = pLink->next;
+ else
+ offman->UsedAreas = pLink->next;
+
+ free(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 = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ /* 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;
+
+ RegionInit(&FreedReg, &OrigArea, 1);
+ RegionInit(&NewReg, &(resize->box), 1);
+ RegionSubtract(&FreedReg, &FreedReg, &NewReg);
+ RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
+ RegionUninit(&FreedReg);
+ RegionUninit(&NewReg);
+
+ SendCallFreeBoxCallbacks(offman);
+
+ return TRUE;
+ }
+
+ /* otherwise we remove the old region */
+
+ RegionInit(&FreedReg, &OrigArea, 1);
+ RegionUnion(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;
+
+ free(newLink);
+
+ /* AllocateArea added one but we really only exchanged one */
+ offman->NumUsedAreas--;
+ }
+ else {
+ /* reinstate the old region */
+ RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
+ RegionUninit(&FreedReg);
+
+ pLink->next = offman->UsedAreas;
+ offman->UsedAreas = pLink;
+ return FALSE;
+ }
+
+ RegionUninit(&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 = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ if (severity < 0)
+ severity = 0;
+ if (severity > 2)
+ severity = 2;
+
+ switch (severity) {
+ case 2:
+ if (offman->NumUsedAreas) {
+ FBLinkPtr pLink;
+ RegionRec tmpRegion;
+
+ newRegion = RegionCreate(NULL, 1);
+ RegionCopy(newRegion, offman->InitialBoxes);
+ pLink = offman->UsedAreas;
+
+ while (pLink) {
+ if (!pLink->area.RemoveAreaCallback) {
+ RegionInit(&tmpRegion, &(pLink->area.box), 1);
+ RegionSubtract(newRegion, newRegion, &tmpRegion);
+ RegionUninit(&tmpRegion);
+ }
+ pLink = pLink->next;
+ }
+
+ nbox = RegionNumRects(newRegion);
+ pbox = RegionRects(newRegion);
+ break;
+ }
+ case 1:
+ if (offman->NumUsedAreas) {
+ FBLinkPtr pLink;
+ RegionRec tmpRegion;
+
+ newRegion = RegionCreate(NULL, 1);
+ RegionCopy(newRegion, offman->FreeBoxes);
+ pLink = offman->UsedAreas;
+
+ while (pLink) {
+ if (pLink->area.RemoveAreaCallback) {
+ RegionInit(&tmpRegion, &(pLink->area.box), 1);
+ RegionAppend(newRegion, &tmpRegion);
+ RegionUninit(&tmpRegion);
+ }
+ pLink = pLink->next;
+ }
+
+ nbox = RegionNumRects(newRegion);
+ pbox = RegionRects(newRegion);
+ break;
+ }
+ default:
+ nbox = RegionNumRects(offman->FreeBoxes);
+ pbox = RegionRects(offman->FreeBoxes);
+ break;
+ }
+
+ while (nbox--) {
+ x = pbox->x1;
+ if (granularity > 1)
+ x = ((x + granularity - 1) / granularity) * granularity;
+
+ 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)
+ RegionDestroy(newRegion);
+
+ return TRUE;
+}
+
+static Bool
+localPurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
+{
+ FBManagerPtr offman;
+ FBLinkPtr pLink, tmp, pPrev = NULL;
+ RegionRec FreedRegion;
+ Bool anyUsed = FALSE;
+
+ offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ pLink = offman->UsedAreas;
+ if (!pLink)
+ return TRUE;
+
+ while (pLink) {
+ if (pLink->area.RemoveAreaCallback) {
+ (*pLink->area.RemoveAreaCallback) (&pLink->area);
+
+ RegionInit(&FreedRegion, &(pLink->area.box), 1);
+ RegionAppend(offman->FreeBoxes, &FreedRegion);
+ RegionUninit(&FreedRegion);
+
+ if (pPrev)
+ pPrev->next = pLink->next;
+ else
+ offman->UsedAreas = pLink->next;
+
+ tmp = pLink;
+ pLink = pLink->next;
+ free(tmp);
+ offman->NumUsedAreas--;
+ anyUsed = TRUE;
+ }
+ else {
+ pPrev = pLink;
+ pLink = pLink->next;
+ }
+ }
+
+ if (anyUsed) {
+ RegionValidate(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 = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ 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;
+
+ free(pLink);
+}
+
+static void
+DumpDebug(FBLinearLinkPtr pLink)
+{
+#ifdef DEBUG
+ if (!pLink)
+ ErrorF("MMmm, PLINK IS NULL!\n");
+
+ while (pLink) {
+ ErrorF(" Offset:%08x, Size:%08x, %s,%s\n",
+ pLink->linear.offset,
+ pLink->linear.size,
+ pLink->free ? "Free" : "Used", pLink->area ? "Area" : "Linear");
+
+ pLink = pLink->next;
+ }
+#endif
+}
+
+static FBLinearPtr
+AllocateLinear(FBManagerPtr offman, int size, int granularity, pointer privData)
+{
+ ScreenPtr pScreen = offman->pScreen;
+ FBLinearLinkPtr linear = NULL;
+ FBLinearLinkPtr newlink = NULL;
+ int offset, end;
+
+ if (size <= 0)
+ return NULL;
+
+ if (!offman->LinearAreas)
+ return NULL;
+
+ linear = offman->LinearAreas;
+ while (linear) {
+ /* Make sure we get a free area that's not an XY fallback case */
+ if (!linear->area && linear->free) {
+ offset = linear->linear.offset;
+ if (granularity > 1)
+ offset =
+ ((offset + granularity - 1) / granularity) * granularity;
+ end = offset + size;
+ if (end <= (linear->linear.offset + linear->linear.size))
+ break;
+ }
+ linear = linear->next;
+ }
+ if (!linear)
+ return NULL;
+
+ /* break left */
+ if (offset > linear->linear.offset) {
+ newlink = malloc(sizeof(FBLinearLink));
+ if (!newlink)
+ return NULL;
+ newlink->area = NULL;
+ newlink->linear.offset = offset;
+ newlink->linear.size =
+ linear->linear.size - (offset - linear->linear.offset);
+ newlink->free = 1;
+ newlink->next = linear->next;
+ linear->linear.size -= newlink->linear.size;
+ linear->next = newlink;
+ linear = newlink;
+ }
+
+ /* break right */
+ if (size < linear->linear.size) {
+ newlink = malloc(sizeof(FBLinearLink));
+ if (!newlink)
+ return NULL;
+ newlink->area = NULL;
+ newlink->linear.offset = offset + size;
+ newlink->linear.size = linear->linear.size - size;
+ newlink->free = 1;
+ newlink->next = linear->next;
+ linear->linear.size = size;
+ linear->next = newlink;
+ }
+
+ /* p = middle block */
+ linear->linear.granularity = granularity;
+ linear->free = 0;
+ linear->linear.pScreen = pScreen;
+ linear->linear.MoveLinearCallback = NULL;
+ linear->linear.RemoveLinearCallback = NULL;
+ linear->linear.devPrivate.ptr = NULL;
+
+ DumpDebug(offman->LinearAreas);
+
+ return &(linear->linear);
+}
+
+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 = (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;
+}
+
+static void
+localFreeOffscreenLinear(FBLinearPtr linear)
+{
+ FBManagerPtr offman;
+ FBLinearLinkPtr pLink, pLinkPrev = NULL;
+ ScreenPtr pScreen = linear->pScreen;
+
+ offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ 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 */
+ DebugF("FREEING AREA\n");
+ localFreeOffscreenArea(pLink->area);
+ if (pLinkPrev)
+ pLinkPrev->next = pLink->next;
+ else
+ offman->LinearAreas = pLink->next;
+ free(pLink);
+ DumpDebug(offman->LinearAreas);
+ return;
+ }
+
+ pLink->free = 1;
+
+ if (pLink->next && pLink->next->free) {
+ FBLinearLinkPtr p = pLink->next;
+
+ pLink->linear.size += p->linear.size;
+ pLink->next = p->next;
+ free(p);
+ }
+
+ if (pLinkPrev) {
+ if (pLinkPrev->next && pLinkPrev->next->free && !pLinkPrev->area) {
+ FBLinearLinkPtr p = pLinkPrev->next;
+
+ pLinkPrev->linear.size += p->linear.size;
+ pLinkPrev->next = p->next;
+ free(p);
+ }
+ }
+
+ DebugF("FREEING LINEAR\n");
+ DumpDebug(offman->LinearAreas);
+}
+
+static Bool
+localResizeOffscreenLinear(FBLinearPtr resize, int length)
+{
+ FBManagerPtr offman;
+ FBLinearLinkPtr pLink;
+ ScreenPtr pScreen = resize->pScreen;
+
+ offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ pLink = offman->LinearAreas;
+ if (!pLink)
+ return FALSE;
+
+ while (&(pLink->linear) != resize) {
+ 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 = RegionExtents(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 {
+ /* TODO!!!! resize the linear area */
+ }
+
+ return FALSE;
+}
+
+static Bool
+localQueryLargestOffscreenLinear(ScreenPtr pScreen,
+ int *size, int gran, int priority)
+{
+ FBManagerPtr offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ FBLinearLinkPtr pLink;
+ FBLinearLinkPtr pLinkRet;
+
+ *size = 0;
+
+ pLink = offman->LinearAreas;
+
+ if (pLink && !pLink->area) {
+ pLinkRet = pLink;
+ while (pLink) {
+ if (pLink->free) {
+ if (pLink->linear.size > pLinkRet->linear.size)
+ pLinkRet = pLink;
+ }
+ pLink = pLink->next;
+ }
+
+ if (pLinkRet->free) {
+ *size = pLinkRet->linear.size;
+ return TRUE;
+ }
+ }
+ else {
+ int w, h;
+
+ if (localQueryLargestOffscreenArea(pScreen, &w, &h, gran,
+ FAVOR_WIDTH_THEN_AREA, priority)) {
+ FBManagerPtr offman;
+ BoxPtr extents;
+
+ offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ extents = RegionExtents(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) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+
+ pScreen->CloseScreen = offman->CloseScreen;
+
+ pLink = offman->UsedAreas;
+ while (pLink) {
+ tmp = pLink;
+ pLink = pLink->next;
+ free(tmp);
+ }
+
+ pLinearLink = offman->LinearAreas;
+ while (pLinearLink) {
+ tmp2 = pLinearLink;
+ pLinearLink = pLinearLink->next;
+ free(tmp2);
+ }
+
+ RegionDestroy(offman->InitialBoxes);
+ RegionDestroy(offman->FreeBoxes);
+
+ free(offman->FreeBoxesUpdateCallback);
+ free(offman->devPrivates);
+ free(offman);
+ dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, 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->x1)
+ return FALSE;
+
+ RegionInit(&ScreenRegion, &ScreenBox, 1);
+ RegionInit(&FullRegion, FullBox, 1);
+
+ RegionSubtract(&FullRegion, &FullRegion, &ScreenRegion);
+
+ ret = xf86InitFBManagerRegion(pScreen, &FullRegion);
+
+ RegionUninit(&ScreenRegion);
+ RegionUninit(&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 = RegionFromRects(nRect, Rect, 0);
+ if (pRegion) {
+ if (!RegionNar(pRegion)) {
+ Rect[2].x = Rect[2].y = 0;
+ Rect[2].width = pScrn->virtualX;
+ Rect[2].height = pScrn->virtualY;
+
+ pScreenRegion = RegionFromRects(1, &Rect[2], 0);
+ if (pScreenRegion) {
+ if (!RegionNar(pScreenRegion)) {
+ RegionSubtract(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);
+ }
+ }
+ }
+
+ RegionDestroy(pScreenRegion);
+ }
+ }
+
+ RegionDestroy(pRegion);
+ }
+
+ return ret;
+}
+
+Bool
+xf86InitFBManagerRegion(ScreenPtr pScreen, RegionPtr FullRegion)
+{
+ FBManagerPtr offman;
+
+ if (RegionNil(FullRegion))
+ return FALSE;
+
+ if (!dixRegisterPrivateKey(&xf86FBScreenKeyRec, PRIVATE_SCREEN, 0))
+ return FALSE;
+
+ if (!xf86RegisterOffscreenManager(pScreen, &xf86FBManFuncs))
+ return FALSE;
+
+ offman = malloc(sizeof(FBManager));
+ if (!offman)
+ return FALSE;
+
+ dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, offman);
+
+ offman->CloseScreen = pScreen->CloseScreen;
+ pScreen->CloseScreen = xf86FBCloseScreen;
+
+ offman->InitialBoxes = RegionCreate(NULL, 1);
+ offman->FreeBoxes = RegionCreate(NULL, 1);
+
+ RegionCopy(offman->InitialBoxes, FullRegion);
+ RegionCopy(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;
+}
+
+Bool
+xf86InitFBManagerLinear(ScreenPtr pScreen, int offset, int size)
+{
+ FBManagerPtr offman;
+ FBLinearLinkPtr link;
+ FBLinearPtr linear;
+
+ if (size <= 0)
+ return FALSE;
+
+ /* we expect people to have called the Area setup first for pixmap cache */
+ if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBScreenKey))
+ return FALSE;
+
+ offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ offman->LinearAreas = malloc(sizeof(FBLinearLink));
+ if (!offman->LinearAreas)
+ return FALSE;
+
+ link = offman->LinearAreas;
+ link->area = NULL;
+ link->next = NULL;
+ link->free = 1;
+ linear = &(link->linear);
+ linear->pScreen = pScreen;
+ linear->size = size;
+ linear->offset = offset;
+ linear->granularity = 0;
+ linear->MoveLinearCallback = NULL;
+ linear->RemoveLinearCallback = NULL;
+ linear->devPrivate.ptr = 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 (xf86FBManagerKey == NULL)
+ return NULL;
+ if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBManagerKey)))
+ return NULL;
+
+ offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
+ xf86FBScreenKey);
+ extents = RegionExtents(offman->InitialBoxes);
+ w = extents->x2 - extents->x1;
+
+ if (gran > 1) {
+ if (gran > w)
+ return NULL;
+
+ if (w % gran)
+ length += gran - 1;
+ }
+
+ 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 2.25.1) at 2024-11-23 11:16:35 +0000