Attachment 651 Details for Bug 1097 – Patch to add pseudo-xinerama support to the mga driver

[patch] Patch to add pseudo-xinerama support to the mga driver

xorg-mga-xinerama-5.patch (text/plain), 26.49 KB, created by Jürg Billeter on 2004-08-16 10:36:10 UTC

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Creator: Jürg Billeter

Created: 2004-08-16 10:36:10 UTC

Size: 26.49 KB

patch

obsolete

>Index: mga.h
>===================================================================
>RCS file: /cvs/xorg/xc/programs/Xserver/hw/xfree86/drivers/mga/mga.h,v
>retrieving revision 1.3
>diff -u -r1.3 mga.h
>--- mga.h	27 Jul 2004 02:50:41 -0000	1.3
>+++ mga.h	16 Aug 2004 17:13:11 -0000
>@@ -259,6 +259,15 @@
> #endif
> 
> 
>+/* ------- mergedfb support ------------- */
>+		/* Psuedo Xinerama support */
>+#define NEED_REPLIES  		/* ? */
>+#define EXTENSION_PROC_ARGS void *
>+#include "extnsionst.h"  	/* required */
>+#include "panoramiXproto.h"  	/* required */
>+#define MGA_XINERAMA_MAJOR_VERSION  1
>+#define MGA_XINERAMA_MINOR_VERSION  1
>+
> typedef enum {
>     mgaLeftOf,
>     mgaRightOf,
>@@ -267,6 +276,8 @@
>     mgaClone
> } MgaScrn2Rel;
> 
>+/* ------------------------------------- */
>+
> typedef struct {
>     int			lastInstance;
> #ifdef USEMGAHAL
>@@ -447,6 +458,7 @@
>     OptionInfoPtr	Options;
> /* Merged Framebuffer data */
>     Bool                MergedFB;
>+    MgaScrn2Rel		Monitor2Pos;
> 
>     /* Real values specific to monitor1, since the original ones are replaced */
>     DisplayModePtr	M1modes;	 /* list of actual modes */
>@@ -458,6 +470,15 @@
>     
>     ScrnInfoPtr       pScrn2; /*pointer to second CRTC screeninforec,
>                                        if in merged mode */
>+    /* pseudo xinerama support for mergedfb */
>+    int			maxM1_X1, maxM1_X2, maxM1_Y1, maxM1_Y2;
>+    int			maxM2_X1, maxM2_X2, maxM2_Y1, maxM2_Y2;
>+    int			maxClone_X1, maxClone_X2, maxClone_Y1, maxClone_Y2;
>+    ExtensionEntry 	*XineramaExtEntry;
>+    int			MGAXineramaVX, MGAXineramaVY;
>+    Bool		AtLeastOneNonClone;
>+    int			MergedFBXDPI, MergedFBYDPI;
>+    Bool		NoVirtual;
> /* End of Merged Framebuffer Data */
>   int			HALGranularityOffX, HALGranularityOffY;
> } MGARec, *MGAPtr;
>Index: mga_driver.c
>===================================================================
>RCS file: /cvs/xorg/xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c,v
>retrieving revision 1.8
>diff -u -r1.8 mga_driver.c
>--- mga_driver.c	9 Aug 2004 22:37:22 -0000	1.8
>+++ mga_driver.c	16 Aug 2004 17:13:14 -0000
>@@ -43,6 +43,9 @@
>  *		Fixed 32bpp hires 8MB horizontal line glitch at middle right
>  *		Niels Gram Jeppesen
>  *		Added digital screen option for first head
>+ *
>+ *		Mergedfb and pseudo xinerama support added by Juerg Billeter (j@bitron.ch)
>+ *		based on the radeon driver by Alex Deucher (agd5f@yahoo.com).
>  */
>  
> /* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c,v 1.244tsi Exp $ */
>@@ -136,6 +139,10 @@
> 
> #include "mga_merge.h"
> 
>+/* pseudo xinerama support */
>+
>+extern Bool 		MGAnoPanoramiXExtension;
>+
> 
> /*
>  * This contains the functions needed by the server after loading the
>@@ -3414,6 +3421,9 @@
>             pMga->PointerMoved = pScrn->PointerMoved;
>         pScrn->PointerMoved = MGAMergePointerMoved; 
>         
>+       /* Psuedo xinerama */
>+	MGAnoPanoramiXExtension = FALSE;
>+        MGAXineramaExtensionInit(pScrn);
>     }
> 
>     /* Initialise default colourmap */
>@@ -3521,6 +3531,9 @@
> Bool
> MGASwitchMode(int scrnIndex, DisplayModePtr mode, int flags)
> {
>+    ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
>+    MGAPtr info = MGAPTR(pScrn);
>+    Bool ret;
> #ifdef USEMGAHAL
>     char sCmdIn[256];
>     char sCmdOut[256];
>@@ -3583,7 +3596,16 @@
> #endif
>  	return FALSE; 
>     }   else
>-	return MGAModeInit(xf86Screens[scrnIndex], mode);
>+	ret = MGAModeInit(xf86Screens[scrnIndex], mode);
>+
>+	/* Since RandR (indirectly) uses SwitchMode(), we need to
>+	* update our Xinerama info here, too, in case of resizing
>+	*/
>+	if(info->MergedFB) {
>+		MGAUpdateXineramaScreenInfo(pScrn);
>+	}
>+	
>+	return ret;
> }
>  
>  /* Adjusts coordinates to match Panning granularity.
>Index: mga_merge.c
>===================================================================
>RCS file: /cvs/xorg/xc/programs/Xserver/hw/xfree86/drivers/mga/mga_merge.c,v
>retrieving revision 1.2
>diff -u -r1.2 mga_merge.c
>--- mga_merge.c	23 Apr 2004 19:37:16 -0000	1.2
>+++ mga_merge.c	16 Aug 2004 17:13:15 -0000
>@@ -10,6 +10,11 @@
> 
> #include "compiler.h"
> 
>+#include "extnsionst.h"  	/* required */
>+#include "panoramiXproto.h"  	/* required */
>+#include "dixstruct.h"
>+#include "vbe.h"
>+
> /* Drivers for PCI hardware need this */
> #include "xf86PciInfo.h"
> #include "mga.h"
>@@ -19,6 +24,23 @@
> 
> #include "fbdevhw.h"
> 
>+/* pseudo xinerama support */
>+static unsigned char 	MGAXineramaReqCode = 0;
>+int 			MGAXineramaPixWidth = 0;
>+int 			MGAXineramaPixHeight = 0;
>+int 			MGAXineramaNumScreens = 0;
>+MGAXineramaData		*MGAXineramadataPtr = NULL;
>+static int 		MGAXineramaGeneration;
>+Bool 			MGAnoPanoramiXExtension = TRUE;
>+
>+int MGAProcXineramaQueryVersion(ClientPtr client);
>+int MGAProcXineramaGetState(ClientPtr client);
>+int MGAProcXineramaGetScreenCount(ClientPtr client);
>+int MGAProcXineramaGetScreenSize(ClientPtr client);
>+int MGAProcXineramaIsActive(ClientPtr client);
>+int MGAProcXineramaQueryScreens(ClientPtr client);
>+int MGASProcXineramaDispatch(ClientPtr client);
>+
> static int
> StrToRanges(range* r, char* s) {
>     float num=0.0;
>@@ -69,6 +91,7 @@
> CopyModeNLink(ScrnInfoPtr pScrn, DisplayModePtr dest, DisplayModePtr i, DisplayModePtr j, MgaScrn2Rel srel) {
>     DisplayModePtr mode;
>     int dx = 0,dy = 0;
>+    MGAPtr  info       = MGAPTR(pScrn);
>     /* start with first node */
>     mode = xalloc(sizeof(DisplayModeRec));
>     memcpy(mode,i, sizeof(DisplayModeRec));
>@@ -103,6 +126,10 @@
>     mode->VSyncEnd += dy;
>     mode->VTotal += dy;
>     mode->Clock = 0; /* Shows we're in Merge mode. */
>+
>+    if(srel != mgaClone) {
>+       info->AtLeastOneNonClone = TRUE;
>+    }
>    
>     mode->next = mode;
>     mode->prev = mode;
>@@ -134,6 +161,7 @@
> static DisplayModePtr
> GenerateModeList(ScrnInfoPtr pScrn, char* str,
> 		 DisplayModePtr i, DisplayModePtr j, MgaScrn2Rel srel) {
>+    MGAPtr  info       = MGAPTR(pScrn);
>     char* strmode = str;
>     char modename[256];
>     Bool gotdash = FALSE;
>@@ -142,6 +170,7 @@
>     DisplayModePtr mode1 = NULL;
>     DisplayModePtr mode2 = NULL;
>     DisplayModePtr result = NULL;
>+    info->AtLeastOneNonClone = FALSE;
>     do {
>         switch(*str) {
>             case 0:
>@@ -237,7 +266,7 @@
> #ifdef USEMGAHAL
>     ULONG status;
> #endif
>-    MgaScrn2Rel Monitor2Pos;
>+    /*MgaScrn2Rel Monitor2Pos;*/
> 
>     xf86DrvMsg(pScrn1->scrnIndex, X_INFO, "==== Start of second screen initialization ====\n");
>     pScrn = xalloc(sizeof(ScrnInfoRec));
>@@ -342,6 +371,7 @@
>     pMga->OverclockMem = pMga1->OverclockMem;
>     pMga->TexturedVideo = pMga1->TexturedVideo;
>     pMga->MergedFB = TRUE;
>+    pMga->MergedFBXDPI = pMga->MergedFBYDPI = 0;
> 
>     pMga->Rotate = 0;
> 
>@@ -619,29 +649,29 @@
>     pMga->CurrentLayout.mode = pScrn->currentMode;
> 
> 
>-    Monitor2Pos = mgaRightOf;
>+    pMga1->Monitor2Pos = mgaRightOf;
>     if ((s = xf86GetOptValString(pMga1->Options, OPTION_MONITOR2POS))) {
>         switch(s[0]) {
>             case 'L': case 'l': case 'G': case 'g':
>-                Monitor2Pos = mgaLeftOf;
>+                pMga1->Monitor2Pos = mgaLeftOf;
>                 break;
>             case 'R': case 'r': case 'D': case 'd':
>-                Monitor2Pos = mgaRightOf;
>+                pMga1->Monitor2Pos = mgaRightOf;
>                 break;
> 
>             case 'A': case 'a': case 'H': case 'h':
>-                Monitor2Pos = mgaAbove;
>+                pMga1->Monitor2Pos = mgaAbove;
>                 break;
> 
>             case 'B': case 'b':
>-                Monitor2Pos = mgaBelow;
>+                pMga1->Monitor2Pos = mgaBelow;
>                 break;
> 
>             case 'C': case 'c':
>-                Monitor2Pos = mgaClone;
>+                pMga1->Monitor2Pos = mgaClone;
>                 break;
>             default:
>-                Monitor2Pos = mgaRightOf;
>+                pMga1->Monitor2Pos = mgaRightOf;
>                 break;
>         } 
>     }
>@@ -652,7 +682,7 @@
>     pMga1->M1currentMode = pScrn1->currentMode;
>     /* make a copy of the mode list, so we can modify it. */
>     if ((s = xf86GetOptValString(pMga1->Options, OPTION_METAMODES))) {
>-        pScrn1->modes = GenerateModeList(pScrn,s,pMga1->M1modes,pScrn->modes,Monitor2Pos); /*FIXME: free this list*/
>+        pScrn1->modes = GenerateModeList(pScrn,s,pMga1->M1modes,pScrn->modes,pMga1->Monitor2Pos); /*FIXME: free this list*/
>         if(!pScrn1->modes) {
> 	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Parse Error reading MetaModes, or No modes left.\n");
>             return FALSE;
>@@ -676,6 +706,578 @@
>     MGADisplayPowerManagementSetCrtc2(pScrn,PowerManagementMode,flags);
> }
> 
>+/* Pseudo-Xinerama extension for MergedFB mode */
>+void
>+MGAUpdateXineramaScreenInfo(ScrnInfoPtr pScrn1)
>+{
>+    MGAPtr  info   = MGAPTR(pScrn1);
>+    ScrnInfoPtr pScrn2 = NULL;
>+    int crt1scrnnum = 0, crt2scrnnum = 1;
>+    int x1=0, x2=0, y1=0, y2=0, h1=0, h2=0, w1=0, w2=0;
>+    DisplayModePtr currentMode, firstMode;
>+    Bool infochanged = FALSE;
>+
>+    if(!info->MergedFB) return;
>+
>+    if(MGAnoPanoramiXExtension) return;
>+
>+    if(!MGAXineramadataPtr) return;
>+
>+    pScrn2 = info->pScrn2;
>+
>+    /* Attention: Usage of RandR may lead into virtual X and Y values
>+     * actually smaller than our MetaModes! To avoid this, we calculate
>+     * the maxCRT fields here (and not somewhere else, like in CopyNLink)
>+     */
>+
>+    if((info->MGAXineramaVX != pScrn1->virtualX) || (info->MGAXineramaVY != pScrn1->virtualY)) {
>+
>+      if(!(pScrn1->modes)) {
>+          xf86DrvMsg(pScrn1->scrnIndex, X_ERROR,
>+       	     "Internal error: MGAUpdateXineramaScreenInfo(): pScrn->modes is NULL\n");
>+	  return;
>+       }
>+
>+       info->maxM1_X1 = info->maxM1_X2 = 0;
>+       info->maxM1_Y1 = info->maxM1_Y2 = 0;
>+       info->maxM2_X1 = info->maxM2_X2 = 0;
>+       info->maxM2_Y1 = info->maxM2_Y2 = 0;
>+       info->maxClone_X1 = info->maxClone_X2 = 0;
>+       info->maxClone_Y1 = info->maxClone_Y2 = 0;
>+
>+       currentMode = firstMode = pScrn1->modes;
>+
>+       do {
>+
>+          DisplayModePtr p = currentMode->next;
>+          DisplayModePtr i = ((MergedDisplayModePtr)currentMode->Private)->Monitor1;
>+          DisplayModePtr j = ((MergedDisplayModePtr)currentMode->Private)->Monitor2;
>+          MgaScrn2Rel srel = ((MergedDisplayModePtr)currentMode->Private)->Monitor2Pos;
>+
>+          if((i->HDisplay <= pScrn1->virtualX) && (j->HDisplay <= pScrn1->virtualX) &&
>+             (i->VDisplay <= pScrn1->virtualY) && (j->VDisplay <= pScrn1->virtualY)) {
>+
>+             if(srel != mgaClone) {
>+                if(info->maxM1_X1 <= i->HDisplay) {
>+                   info->maxM1_X1 = i->HDisplay;      /* Largest M1 mode */
>+                   if(info->maxM1_X2 < j->HDisplay) {
>+                      info->maxM1_X2 = j->HDisplay;   /* Largest X of M2 mode displayed with largest M1 mode */
>+                   }
>+                }
>+                if(info->maxM2_X2 <= j->HDisplay) {
>+                   info->maxM2_X2 = j->HDisplay;      /* Largest M2 mode */
>+                   if(info->maxM2_X1 < i->HDisplay) {
>+                      info->maxM2_X1 = i->HDisplay;   /* Largest X of M1 mode displayed with largest M2 mode */
>+                   }
>+                }
>+                if(info->maxM1_Y1 <= i->VDisplay) {
>+                   info->maxM1_Y1 = i->VDisplay;
>+                   if(info->maxM1_Y2 < j->VDisplay) {
>+                      info->maxM1_Y2 = j->VDisplay;
>+                   }
>+                }
>+                if(info->maxM2_Y2 <= j->VDisplay) {
>+                   info->maxM2_Y2 = j->VDisplay;
>+                   if(info->maxM2_Y1 < i->VDisplay) {
>+                      info->maxM2_Y1 = i->VDisplay;
>+                   }
>+                }
>+             } else {
>+                if(info->maxClone_X1 < i->HDisplay) {
>+                   info->maxClone_X1 = i->HDisplay;
>+                }
>+                if(info->maxClone_X2 < j->HDisplay) {
>+                   info->maxClone_X2 = j->HDisplay;
>+                }
>+                if(info->maxClone_Y1 < i->VDisplay) {
>+                   info->maxClone_Y1 = i->VDisplay;
>+                }
>+                if(info->maxClone_Y2 < j->VDisplay) {
>+                   info->maxClone_Y2 = j->VDisplay;
>+                }
>+             }
>+          }
>+          currentMode = p;
>+
>+       } while((currentMode) && (currentMode != firstMode));
>+
>+       info->MGAXineramaVX = pScrn1->virtualX;
>+       info->MGAXineramaVY = pScrn1->virtualY;
>+       infochanged = TRUE;
>+
>+    }
>+
>+    /* leftof
>+
>+        V 1:
>+        M2: 	x = 0
>+		y = 0
>+		w = (maxM2 X)
>+		h = (virtual Y)
>+	M1:   x = (virtual X) - (maxM1 X)
>+		y = 0
>+		w = (maxM1 X)
>+		h = (virtual Y)
>+
>+	V 2:
>+       	M2: 	x = 0
>+		y = 0
>+		w = max M2 mode X
>+		h = virtual Y size
>+	M1:   x = (max) M2 mode X von dem Metamode, wo M1 mode maximal breit ist
>+		y = 0
>+		w = max M1 mode X
>+		h = virtual Y size
>+
>+	V 3:  (current)
>+	M1:   x = (maxM2 X von dem MMode, wo maxM1 X)
>+		y = 0
>+		w = (virtual X) - x
>+		h = (virtual Y)
>+        M2: 	x = 0
>+		y = 0
>+		w = (virtual X) - (maxM1 X von dem MMode, wo maxM2 X)
>+		h = (virtual Y)
>+
>+    */
>+    switch(info->Monitor2Pos) {
>+    case mgaLeftOf:								/* V 1 */
>+       x1 = min(info->maxM1_X2, pScrn1->virtualX - info->maxM1_X1);		/* pScrn1->virtualX - pSiS->maxM1_X1; 
>+*/
>+       if(x1 < 0) x1 = 0;
>+       y1 = 0;									/* 0; */
>+       w1 = pScrn1->virtualX - x1;						/* pSiS->maxM1_X1; */
>+       h1 = pScrn1->virtualY;							/* pScrn1->virtualY; */
>+       x2 = 0;									/* 0; */
>+       y2 = 0;									/* 0; */
>+       w2 = max(info->maxM2_X2, pScrn1->virtualX - info->maxM2_X1); 	/* pSiS->maxM2_X2; */
>+       if(w2 > pScrn1->virtualX) w2 = pScrn1->virtualX;
>+       h2 = pScrn1->virtualY; 							/* pScrn1->virtualY; */
>+       break;
>+    case mgaRightOf:
>+       x1 = 0;									/* 0; */
>+       y1 = 0;									/* 0; */
>+       w1 = max(info->maxM1_X1, pScrn1->virtualX - info->maxM1_X2);		/* pSiS->maxM1_X1; */
>+       if(w1 > pScrn1->virtualX) w1 = pScrn1->virtualX;
>+       h1 = pScrn1->virtualY;							/* pScrn1->virtualY; */
>+       x2 = min(info->maxM2_X1, pScrn1->virtualX - info->maxM2_X2);		/* pScrn1->virtualX - pSiS->maxM2_X2; 
>+*/
>+       if(x2 < 0) x2 = 0;
>+       y2 = 0;									/* 0; */
>+       w2 = pScrn1->virtualX - x2;						/* pSiS->maxM2_X2; */
>+       h2 = pScrn1->virtualY;							/* pScrn1->virtualY; */
>+       break;
>+    case mgaAbove:
>+       x1 = 0;									/* 0; */
>+       y1 = min(info->maxM1_Y2, pScrn1->virtualY - info->maxM1_Y1);		/* pScrn1->virtualY - pSiS->maxM1_Y1; 
>+*/
>+       if(y1 < 0) y1 = 0;
>+       w1 = pScrn1->virtualX;							/* pScrn1->virtualX; */
>+       h1 = pScrn1->virtualY - y1;						/* pSiS->maxM1_Y1; */
>+       x2 = 0;									/* 0; */
>+       y2 = 0;									/* 0; */
>+       w2 = pScrn1->virtualX;							/* pScrn1->virtualX; */
>+       h2 = max(info->maxM2_Y2, pScrn1->virtualY - info->maxM2_Y1);		/* pSiS->maxM2_Y2; */
>+       if(h2 > pScrn1->virtualY) h2 = pScrn1->virtualY;
>+       break;
>+    case mgaBelow:
>+       x1 = 0;									/* 0; */
>+       y1 = 0;									/* 0; */
>+       w1 = pScrn1->virtualX;							/* pScrn1->virtualX; */
>+       h1 = max(info->maxM1_Y1, pScrn1->virtualY - info->maxM1_Y2);		/* pSiS->maxM1_Y1; */
>+       if(h1 > pScrn1->virtualY) h1 = pScrn1->virtualY;
>+       x2 = 0;									/* 0; */
>+       y2 = min(info->maxM2_Y1, pScrn1->virtualY - info->maxM2_Y2);		/* pScrn1->virtualY - pSiS->maxM2_Y2; 
>+*/
>+       if(y2 < 0) y2 = 0;
>+       w2 = pScrn1->virtualX;							/* pScrn1->virtualX; */
>+       h2 = pScrn1->virtualY - y2;						/* pSiS->maxM2_Y2; */
>+       break;
>+    default:
>+       xf86DrvMsg(pScrn1->scrnIndex, X_ERROR,
>+       	  "Internal error: UpdateXineramaInfo(): unsupported Monitor2Pos (%d)\n",
>+	  info->Monitor2Pos);
>+    }
>+    MGAXineramadataPtr[crt1scrnnum].x = x1;
>+    MGAXineramadataPtr[crt1scrnnum].y = y1;
>+    MGAXineramadataPtr[crt1scrnnum].width = w1;
>+    MGAXineramadataPtr[crt1scrnnum].height = h1;
>+    MGAXineramadataPtr[crt2scrnnum].x = x2;
>+    MGAXineramadataPtr[crt2scrnnum].y = y2;
>+    MGAXineramadataPtr[crt2scrnnum].width = w2;
>+    MGAXineramadataPtr[crt2scrnnum].height = h2;
>+
>+    if(infochanged) {
>+       xf86DrvMsg(pScrn1->scrnIndex, X_INFO,
>+          "Pseudo-Xinerama: Monitor1 (Screen %d) (%d,%d)-(%d,%d)\n",
>+          crt1scrnnum, x1, y1, w1+x1-1, h1+y1-1);
>+       xf86DrvMsg(pScrn1->scrnIndex, X_INFO,
>+          "Pseudo-Xinerama: Monitor2 (Screen %d) (%d,%d)-(%d,%d)\n",
>+          crt2scrnnum, x2, y2, w2+x2-1, h2+y2-1);
>+    }
>+
>+}
>+
>+/* Proc */
>+
>+int
>+MGAProcXineramaQueryVersion(ClientPtr client)
>+{
>+    xPanoramiXQueryVersionReply	  rep;
>+    register int		  n;
>+
>+    REQUEST_SIZE_MATCH(xPanoramiXQueryVersionReq);
>+    rep.type = X_Reply;
>+    rep.length = 0;
>+    rep.sequenceNumber = client->sequence;
>+    rep.majorVersion = MGA_XINERAMA_MAJOR_VERSION;
>+    rep.minorVersion = MGA_XINERAMA_MINOR_VERSION;
>+    if(client->swapped) {
>+        swaps(&rep.sequenceNumber, n);
>+        swapl(&rep.length, n);
>+        swaps(&rep.majorVersion, n);
>+        swaps(&rep.minorVersion, n);
>+    }
>+    WriteToClient(client, sizeof(xPanoramiXQueryVersionReply), (char *)&rep);
>+    return (client->noClientException);
>+}
>+
>+int
>+MGAProcXineramaGetState(ClientPtr client)
>+{
>+    REQUEST(xPanoramiXGetStateReq);
>+    WindowPtr			pWin;
>+    xPanoramiXGetStateReply	rep;
>+    register int		n;
>+
>+    REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
>+    pWin = LookupWindow(stuff->window, client);
>+    if(!pWin) return BadWindow;
>+
>+    rep.type = X_Reply;
>+    rep.length = 0;
>+    rep.sequenceNumber = client->sequence;
>+    rep.state = !MGAnoPanoramiXExtension;
>+    if(client->swapped) {
>+       swaps (&rep.sequenceNumber, n);
>+       swapl (&rep.length, n);
>+       swaps (&rep.state, n);
>+    }
>+    WriteToClient(client, sizeof(xPanoramiXGetStateReply), (char *)&rep);
>+    return client->noClientException;
>+}
>+
>+int
>+MGAProcXineramaGetScreenCount(ClientPtr client)
>+{
>+    REQUEST(xPanoramiXGetScreenCountReq);
>+    WindowPtr				pWin;
>+    xPanoramiXGetScreenCountReply	rep;
>+    register int			n;
>+
>+    REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
>+    pWin = LookupWindow(stuff->window, client);
>+    if(!pWin) return BadWindow;
>+
>+    rep.type = X_Reply;
>+    rep.length = 0;
>+    rep.sequenceNumber = client->sequence;
>+    rep.ScreenCount = MGAXineramaNumScreens;
>+    if(client->swapped) {
>+       swaps(&rep.sequenceNumber, n);
>+       swapl(&rep.length, n);
>+       swaps(&rep.ScreenCount, n);
>+    }
>+    WriteToClient(client, sizeof(xPanoramiXGetScreenCountReply), (char *)&rep);
>+    return client->noClientException;
>+}
>+
>+int
>+MGAProcXineramaGetScreenSize(ClientPtr client)
>+{
>+    REQUEST(xPanoramiXGetScreenSizeReq);
>+    WindowPtr				pWin;
>+    xPanoramiXGetScreenSizeReply	rep;
>+    register int			n;
>+
>+    REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
>+    pWin = LookupWindow (stuff->window, client);
>+    if(!pWin)  return BadWindow;
>+
>+    rep.type = X_Reply;
>+    rep.length = 0;
>+    rep.sequenceNumber = client->sequence;
>+    rep.width  = MGAXineramadataPtr[stuff->screen].width;
>+    rep.height = MGAXineramadataPtr[stuff->screen].height;
>+    if(client->swapped) {
>+       swaps(&rep.sequenceNumber, n);
>+       swapl(&rep.length, n);
>+       swaps(&rep.width, n);
>+       swaps(&rep.height, n);
>+    }
>+    WriteToClient(client, sizeof(xPanoramiXGetScreenSizeReply), (char *)&rep);
>+    return client->noClientException;
>+}
>+
>+int
>+MGAProcXineramaIsActive(ClientPtr client)
>+{
>+    xXineramaIsActiveReply	rep;
>+
>+    REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
>+
>+    rep.type = X_Reply;
>+    rep.length = 0;
>+    rep.sequenceNumber = client->sequence;
>+    rep.state = !MGAnoPanoramiXExtension;
>+    if(client->swapped) {
>+	register int n;
>+	swaps(&rep.sequenceNumber, n);
>+	swapl(&rep.length, n);
>+	swapl(&rep.state, n);
>+    }
>+    WriteToClient(client, sizeof(xXineramaIsActiveReply), (char *) &rep);
>+    return client->noClientException;
>+}
>+
>+int
>+MGAProcXineramaQueryScreens(ClientPtr client)
>+{
>+    xXineramaQueryScreensReply	rep;
>+
>+    REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
>+
>+    rep.type = X_Reply;
>+    rep.sequenceNumber = client->sequence;
>+    rep.number = (MGAnoPanoramiXExtension) ? 0 : MGAXineramaNumScreens;
>+    rep.length = rep.number * sz_XineramaScreenInfo >> 2;
>+    if(client->swapped) {
>+       register int n;
>+       swaps(&rep.sequenceNumber, n);
>+       swapl(&rep.length, n);
>+       swapl(&rep.number, n);
>+    }
>+    WriteToClient(client, sizeof(xXineramaQueryScreensReply), (char *)&rep);
>+
>+    if(!MGAnoPanoramiXExtension) {
>+       xXineramaScreenInfo scratch;
>+       int i;
>+
>+       for(i = 0; i < MGAXineramaNumScreens; i++) {
>+	  scratch.x_org  = MGAXineramadataPtr[i].x;
>+	  scratch.y_org  = MGAXineramadataPtr[i].y;
>+	  scratch.width  = MGAXineramadataPtr[i].width;
>+	  scratch.height = MGAXineramadataPtr[i].height;
>+	  if(client->swapped) {
>+	     register int n;
>+	     swaps(&scratch.x_org, n);
>+	     swaps(&scratch.y_org, n);
>+	     swaps(&scratch.width, n);
>+    	     swaps(&scratch.height, n);
>+	  }
>+	  WriteToClient(client, sz_XineramaScreenInfo, (char *)&scratch);
>+       }
>+    }
>+
>+    return client->noClientException;
>+}
>+
>+static int
>+MGAProcXineramaDispatch(ClientPtr client)
>+{
>+    REQUEST(xReq);
>+    switch (stuff->data)
>+    {
>+	case X_PanoramiXQueryVersion:
>+	     return MGAProcXineramaQueryVersion(client);
>+	case X_PanoramiXGetState:
>+	     return MGAProcXineramaGetState(client);
>+	case X_PanoramiXGetScreenCount:
>+	     return MGAProcXineramaGetScreenCount(client);
>+	case X_PanoramiXGetScreenSize:
>+	     return MGAProcXineramaGetScreenSize(client);
>+	case X_XineramaIsActive:
>+	     return MGAProcXineramaIsActive(client);
>+	case X_XineramaQueryScreens:
>+	     return MGAProcXineramaQueryScreens(client);
>+    }
>+    return BadRequest;
>+}
>+
>+/* SProc */
>+
>+static int
>+MGASProcXineramaQueryVersion (ClientPtr client)
>+{
>+	REQUEST(xPanoramiXQueryVersionReq);
>+	register int n;
>+	swaps(&stuff->length,n);
>+	REQUEST_SIZE_MATCH (xPanoramiXQueryVersionReq);
>+	return MGAProcXineramaQueryVersion(client);
>+}
>+
>+static int
>+MGASProcXineramaGetState(ClientPtr client)
>+{
>+	REQUEST(xPanoramiXGetStateReq);
>+	register int n;
>+ 	swaps (&stuff->length, n);
>+	REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
>+	return MGAProcXineramaGetState(client);
>+}
>+
>+static int
>+MGASProcXineramaGetScreenCount(ClientPtr client)
>+{
>+	REQUEST(xPanoramiXGetScreenCountReq);
>+	register int n;
>+	swaps (&stuff->length, n);
>+	REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
>+	return MGAProcXineramaGetScreenCount(client);
>+}
>+
>+static int
>+MGASProcXineramaGetScreenSize(ClientPtr client)
>+{
>+	REQUEST(xPanoramiXGetScreenSizeReq);
>+	register int n;
>+	swaps (&stuff->length, n);
>+	REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
>+	return MGAProcXineramaGetScreenSize(client);
>+}
>+
>+static int
>+MGASProcXineramaIsActive(ClientPtr client)
>+{
>+	REQUEST(xXineramaIsActiveReq);
>+	register int n;
>+	swaps (&stuff->length, n);
>+	REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
>+	return MGAProcXineramaIsActive(client);
>+}
>+
>+static int
>+MGASProcXineramaQueryScreens(ClientPtr client)
>+{
>+	REQUEST(xXineramaQueryScreensReq);
>+	register int n;
>+	swaps (&stuff->length, n);
>+	REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
>+	return MGAProcXineramaQueryScreens(client);
>+}
>+
>+int
>+MGASProcXineramaDispatch(ClientPtr client)
>+{
>+    REQUEST(xReq);
>+    switch (stuff->data) {
>+	case X_PanoramiXQueryVersion:
>+	     return MGASProcXineramaQueryVersion(client);
>+	case X_PanoramiXGetState:
>+	     return MGASProcXineramaGetState(client);
>+	case X_PanoramiXGetScreenCount:
>+	     return MGASProcXineramaGetScreenCount(client);
>+	case X_PanoramiXGetScreenSize:
>+	     return MGASProcXineramaGetScreenSize(client);
>+	case X_XineramaIsActive:
>+	     return MGASProcXineramaIsActive(client);
>+	case X_XineramaQueryScreens:
>+	     return MGASProcXineramaQueryScreens(client);
>+    }
>+    return BadRequest;
>+}
>+
>+static void
>+MGAXineramaResetProc(ExtensionEntry* extEntry)
>+{
>+    if(MGAXineramadataPtr) {
>+       Xfree(MGAXineramadataPtr);
>+       MGAXineramadataPtr = NULL;
>+    }
>+}
>+
>+void
>+MGAXineramaExtensionInit(ScrnInfoPtr pScrn)
>+{
>+    MGAPtr info = MGAPTR(pScrn);
>+    Bool	success = FALSE;
>+
>+    if(!(MGAXineramadataPtr)) {
>+
>+       if(!info->MergedFB) {
>+          MGAnoPanoramiXExtension = TRUE;
>+          return;
>+       }
>+
>+       if(!noPanoramiXExtension) {
>+          xf86DrvMsg(pScrn->scrnIndex, X_INFO,
>+       	     "Xinerama active, not initializing MGA Pseudo-Xinerama\n");
>+          MGAnoPanoramiXExtension = TRUE;
>+          return;
>+       }
>+
>+       if(MGAnoPanoramiXExtension) {
>+          xf86DrvMsg(pScrn->scrnIndex, X_INFO,
>+       	      "MGA Pseudo-Xinerama disabled\n");
>+          return;
>+       }
>+
>+       if(info->Monitor2Pos == mgaClone) {
>+          xf86DrvMsg(pScrn->scrnIndex, X_INFO,
>+       	     "Running MergedFB in Clone mode, MGA Pseudo-Xinerama disabled\n");
>+          MGAnoPanoramiXExtension = TRUE;
>+          return;
>+       }
>+
>+xf86DrvMsg(pScrn->scrnIndex, X_INFO, "%s:%d, mgaptr=%d\n", __FILE__, __LINE__, info);
>+       if(!(MGAPTR(info->pScrn2)->AtLeastOneNonClone)) {
>+          xf86DrvMsg(pScrn->scrnIndex, X_INFO,
>+       	     "Only Clone modes defined, MGA Pseudo-Xinerama disabled\n");
>+          MGAnoPanoramiXExtension = TRUE;
>+          return;
>+       }
>+
>+       MGAXineramaNumScreens = 2;
>+
>+       while(MGAXineramaGeneration != serverGeneration) {
>+
>+	  info->XineramaExtEntry = AddExtension(PANORAMIX_PROTOCOL_NAME, 0,0,
>+					MGAProcXineramaDispatch,
>+					MGASProcXineramaDispatch,
>+					MGAXineramaResetProc,
>+					StandardMinorOpcode);
>+
>+	  if(!info->XineramaExtEntry) break;
>+
>+	  MGAXineramaReqCode = (unsigned char)info->XineramaExtEntry->base;
>+
>+	  if(!(MGAXineramadataPtr = (MGAXineramaData *)
>+	        xcalloc(MGAXineramaNumScreens, sizeof(MGAXineramaData)))) break;
>+
>+	  MGAXineramaGeneration = serverGeneration;
>+	  success = TRUE;
>+       }
>+
>+       if(!success) {
>+          xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
>+	    	"Failed to initialize MGA Pseudo-Xinerama extension\n");
>+          MGAnoPanoramiXExtension = TRUE;
>+          return;
>+       }
>+
>+       xf86DrvMsg(pScrn->scrnIndex, X_INFO,
>+    	  "Initialized MGA Pseudo-Xinerama extension\n");
>+
>+       info->MGAXineramaVX = 0;
>+       info->MGAXineramaVY = 0;
>+
>+    }
>+
>+    MGAUpdateXineramaScreenInfo(pScrn);
>+
>+}
>+/* End of PseudoXinerama */
>+
> typedef struct _region {
>     int x0,x1,y0,y1;
>     } region;
>Index: mga_merge.h
>===================================================================
>RCS file: /cvs/xorg/xc/programs/Xserver/hw/xfree86/drivers/mga/mga_merge.h,v
>retrieving revision 1.1.1.1
>diff -u -r1.1.1.1 mga_merge.h
>--- mga_merge.h	14 Nov 2003 16:48:55 -0000	1.1.1.1
>+++ mga_merge.h	16 Aug 2004 17:13:15 -0000
>@@ -16,4 +16,16 @@
>     MgaScrn2Rel    Monitor2Pos; 
> } MergedDisplayModeRec, *MergedDisplayModePtr;
> 
>+typedef struct _MGAXineramaData {
>+    int x;
>+    int y;
>+    int width;
>+    int height;
>+} MGAXineramaData;
>+
> #define MDMPTR(x) ((MergedDisplayModePtr)(x->currentMode->Private))
>+
>+extern void
>+MGAXineramaExtensionInit(ScrnInfoPtr pScrn);
>+extern void
>+MGAUpdateXineramaScreenInfo(ScrnInfoPtr pScrn1);

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