initial state (xorg-server 1.10.2)

1 files changed, 1035 insertions, 0 deletions

diff --git a/hw/xfree86/dixmods/extmod/xf86dga2.c b/hw/xfree86/dixmods/extmod/xf86dga2.c
new file mode 100644
index 0000000..4bcf77e
--- /dev/null
+++ b/hw/xfree86/dixmods/extmod/xf86dga2.c
@@ -0,0 +1,1035 @@
+/*
+ * Copyright (c) 1995  Jon Tombs
+ * Copyright (c) 1995, 1996, 1999  XFree86 Inc
+ * Copyright (c) 1999 - The XFree86 Project Inc.
+ *
+ * Written by Mark Vojkovich
+ */
+
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "dixstruct.h"
+#include "dixevents.h"
+#include "pixmapstr.h"
+#include "extnsionst.h"
+#include "colormapst.h"
+#include "cursorstr.h"
+#include "scrnintstr.h"
+#include "servermd.h"
+#include <X11/extensions/xf86dgaproto.h>
+#include "swaprep.h"
+#include "dgaproc.h"
+#include "protocol-versions.h"
+
+#include <string.h>
+
+#include "modinit.h"
+
+#define DGA_PROTOCOL_OLD_SUPPORT 1
+
+
+static void XDGAResetProc(ExtensionEntry *extEntry);
+
+static void DGAClientStateChange (CallbackListPtr*, pointer, pointer);
+
+unsigned char DGAReqCode = 0;
+int DGAErrorBase;
+int DGAEventBase;
+
+static DevPrivateKeyRec DGAScreenPrivateKeyRec;
+#define DGAScreenPrivateKey (&DGAScreenPrivateKeyRec)
+#define DGAScreenPrivateKeyRegistered (DGAScreenPrivateKeyRec.initialized)
+static DevPrivateKeyRec DGAClientPrivateKeyRec;
+#define DGAClientPrivateKey (&DGAClientPrivateKeyRec)
+static int DGACallbackRefCount = 0;
+
+/* This holds the client's version information */
+typedef struct {
+    int		major;
+    int		minor;
+} DGAPrivRec, *DGAPrivPtr;
+
+#define DGA_GETCLIENT(idx) ((ClientPtr) \
+    dixLookupPrivate(&screenInfo.screens[idx]->devPrivates, DGAScreenPrivateKey))
+#define DGA_SETCLIENT(idx,p) \
+    dixSetPrivate(&screenInfo.screens[idx]->devPrivates, DGAScreenPrivateKey, p)
+
+#define DGA_GETPRIV(c) ((DGAPrivPtr) \
+    dixLookupPrivate(&(c)->devPrivates, DGAClientPrivateKey))
+#define DGA_SETPRIV(c,p) \
+    dixSetPrivate(&(c)->devPrivates, DGAClientPrivateKey, p)
+
+
+static void
+XDGAResetProc (ExtensionEntry *extEntry)
+{
+   DeleteCallback (&ClientStateCallback, DGAClientStateChange, NULL);
+   DGACallbackRefCount = 0;
+}
+
+
+static int
+ProcXDGAQueryVersion(ClientPtr client)
+{
+    xXDGAQueryVersionReply rep;
+
+    REQUEST_SIZE_MATCH(xXDGAQueryVersionReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.majorVersion = SERVER_XDGA_MAJOR_VERSION;
+    rep.minorVersion = SERVER_XDGA_MINOR_VERSION;
+
+    WriteToClient(client, sizeof(xXDGAQueryVersionReply), (char *)&rep);
+    return Success;
+}
+
+
+static int
+ProcXDGAOpenFramebuffer(ClientPtr client)
+{
+    REQUEST(xXDGAOpenFramebufferReq);
+    xXDGAOpenFramebufferReply rep;
+    char *deviceName;
+    int nameSize;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if (!DGAAvailable(stuff->screen))
+        return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    REQUEST_SIZE_MATCH(xXDGAOpenFramebufferReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    if(!DGAOpenFramebuffer(stuff->screen, &deviceName,
+			(unsigned char**)(&rep.mem1),
+			(int*)&rep.size, (int*)&rep.offset, (int*)&rep.extra))
+    {
+	return BadAlloc;
+    }
+
+    nameSize = deviceName ? (strlen(deviceName) + 1) : 0;
+    rep.length = bytes_to_int32(nameSize);
+
+    WriteToClient(client, sizeof(xXDGAOpenFramebufferReply), (char *)&rep);
+    if(rep.length)
+	WriteToClient(client, nameSize, deviceName);
+
+    return Success;
+}
+
+
+static int
+ProcXDGACloseFramebuffer(ClientPtr client)
+{
+    REQUEST(xXDGACloseFramebufferReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if (!DGAAvailable(stuff->screen))
+        return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    REQUEST_SIZE_MATCH(xXDGACloseFramebufferReq);
+
+    DGACloseFramebuffer(stuff->screen);
+
+    return Success;
+}
+
+static int
+ProcXDGAQueryModes(ClientPtr client)
+{
+    int i, num, size;
+    REQUEST(xXDGAQueryModesReq);
+    xXDGAQueryModesReply rep;
+    xXDGAModeInfo info;
+    XDGAModePtr mode;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    REQUEST_SIZE_MATCH(xXDGAQueryModesReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.number = 0;
+    rep.sequenceNumber = client->sequence;
+
+    if (!DGAAvailable(stuff->screen)) {
+	rep.number = 0;
+	rep.length = 0;
+	WriteToClient(client, sz_xXDGAQueryModesReply, (char*)&rep);
+	return Success;
+    }
+
+    if(!(num = DGAGetModes(stuff->screen))) {
+	WriteToClient(client, sz_xXDGAQueryModesReply, (char*)&rep);
+	return Success;
+    }
+
+    if(!(mode = (XDGAModePtr)malloc(num * sizeof(XDGAModeRec))))
+	return BadAlloc;
+
+    for(i = 0; i < num; i++)
+	DGAGetModeInfo(stuff->screen, mode + i, i + 1);
+
+    size = num * sz_xXDGAModeInfo;
+    for(i = 0; i < num; i++)
+	size += pad_to_int32(strlen(mode[i].name) + 1);  /* plus NULL */
+
+    rep.number = num;
+    rep.length = bytes_to_int32(size);
+
+    WriteToClient(client, sz_xXDGAQueryModesReply, (char*)&rep);
+
+    for(i = 0; i < num; i++) {
+	size = strlen(mode[i].name) + 1;
+
+	info.byte_order = mode[i].byteOrder;
+	info.depth = mode[i].depth;
+	info.num = mode[i].num;
+	info.bpp = mode[i].bitsPerPixel;
+	info.name_size = (size + 3) & ~3L;
+	info.vsync_num = mode[i].VSync_num;
+	info.vsync_den = mode[i].VSync_den;
+	info.flags = mode[i].flags;
+	info.image_width = mode[i].imageWidth;
+	info.image_height = mode[i].imageHeight;
+	info.pixmap_width = mode[i].pixmapWidth;
+	info.pixmap_height = mode[i].pixmapHeight;
+	info.bytes_per_scanline = mode[i].bytesPerScanline;
+	info.red_mask = mode[i].red_mask;
+	info.green_mask = mode[i].green_mask;
+	info.blue_mask = mode[i].blue_mask;
+	info.visual_class = mode[i].visualClass;
+	info.viewport_width = mode[i].viewportWidth;
+	info.viewport_height = mode[i].viewportHeight;
+	info.viewport_xstep = mode[i].xViewportStep;
+	info.viewport_ystep = mode[i].yViewportStep;
+ 	info.viewport_xmax = mode[i].maxViewportX;
+	info.viewport_ymax = mode[i].maxViewportY;
+	info.viewport_flags = mode[i].viewportFlags;
+	info.reserved1 = mode[i].reserved1;
+	info.reserved2 = mode[i].reserved2;
+
+	WriteToClient(client, sz_xXDGAModeInfo, (char*)(&info));
+	WriteToClient(client, size, mode[i].name);
+    }
+
+    free(mode);
+
+    return Success;
+}
+
+
+static void
+DGAClientStateChange (
+    CallbackListPtr* pcbl,
+    pointer nulldata,
+    pointer calldata
+){
+    NewClientInfoRec* pci = (NewClientInfoRec*) calldata;
+    ClientPtr client = NULL;
+    int i;
+
+    for(i = 0; i < screenInfo.numScreens; i++) {
+	if(DGA_GETCLIENT(i) == pci->client) {
+	   client = pci->client;
+	   break;
+	}
+    }
+
+    if(client &&
+      ((client->clientState == ClientStateGone) ||
+       (client->clientState == ClientStateRetained))) {
+	XDGAModeRec mode;
+	PixmapPtr pPix;
+
+	DGA_SETCLIENT(i, NULL);
+	DGASelectInput(i, NULL, 0);
+	DGASetMode(i, 0, &mode, &pPix);
+
+	if(--DGACallbackRefCount == 0)
+	    DeleteCallback(&ClientStateCallback, DGAClientStateChange, NULL);
+    }
+}
+
+static int
+ProcXDGASetMode(ClientPtr client)
+{
+    REQUEST(xXDGASetModeReq);
+    xXDGASetModeReply rep;
+    XDGAModeRec mode;
+    xXDGAModeInfo info;
+    PixmapPtr pPix;
+    ClientPtr owner;
+    int size;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+    owner = DGA_GETCLIENT(stuff->screen);
+
+    REQUEST_SIZE_MATCH(xXDGASetModeReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.offset = 0;
+    rep.flags = 0;
+    rep.sequenceNumber = client->sequence;
+
+    if (!DGAAvailable(stuff->screen))
+        return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    if(owner && owner != client)
+        return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    if(!stuff->mode) {
+	if(owner) {
+	  if(--DGACallbackRefCount == 0)
+	    DeleteCallback(&ClientStateCallback, DGAClientStateChange, NULL);
+	}
+	DGA_SETCLIENT(stuff->screen, NULL);
+	DGASelectInput(stuff->screen, NULL, 0);
+	DGASetMode(stuff->screen, 0, &mode, &pPix);
+	WriteToClient(client, sz_xXDGASetModeReply, (char*)&rep);
+	return Success;
+    }
+
+    if(Success != DGASetMode(stuff->screen, stuff->mode, &mode, &pPix))
+	return BadValue;
+
+    if(!owner) {
+	if(DGACallbackRefCount++ == 0)
+	   AddCallback (&ClientStateCallback, DGAClientStateChange, NULL);
+    }
+
+    DGA_SETCLIENT(stuff->screen, client);
+
+    if(pPix) {
+	if(AddResource(stuff->pid, RT_PIXMAP, (pointer)(pPix))) {
+	    pPix->drawable.id = (int)stuff->pid;
+	    rep.flags = DGA_PIXMAP_AVAILABLE;
+	}
+    }
+
+    size = strlen(mode.name) + 1;
+
+    info.byte_order = mode.byteOrder;
+    info.depth = mode.depth;
+    info.num = mode.num;
+    info.bpp = mode.bitsPerPixel;
+    info.name_size = (size + 3) & ~3L;
+    info.vsync_num = mode.VSync_num;
+    info.vsync_den = mode.VSync_den;
+    info.flags = mode.flags;
+    info.image_width = mode.imageWidth;
+    info.image_height = mode.imageHeight;
+    info.pixmap_width = mode.pixmapWidth;
+    info.pixmap_height = mode.pixmapHeight;
+    info.bytes_per_scanline = mode.bytesPerScanline;
+    info.red_mask = mode.red_mask;
+    info.green_mask = mode.green_mask;
+    info.blue_mask = mode.blue_mask;
+    info.visual_class = mode.visualClass;
+    info.viewport_width = mode.viewportWidth;
+    info.viewport_height = mode.viewportHeight;
+    info.viewport_xstep = mode.xViewportStep;
+    info.viewport_ystep = mode.yViewportStep;
+    info.viewport_xmax = mode.maxViewportX;
+    info.viewport_ymax = mode.maxViewportY;
+    info.viewport_flags = mode.viewportFlags;
+    info.reserved1 = mode.reserved1;
+    info.reserved2 = mode.reserved2;
+
+    rep.length = bytes_to_int32(sz_xXDGAModeInfo + info.name_size);
+
+    WriteToClient(client, sz_xXDGASetModeReply, (char*)&rep);
+    WriteToClient(client, sz_xXDGAModeInfo, (char*)(&info));
+    WriteToClient(client, size, mode.name);
+
+    return Success;
+}
+
+static int
+ProcXDGASetViewport(ClientPtr client)
+{
+    REQUEST(xXDGASetViewportReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGASetViewportReq);
+
+    DGASetViewport(stuff->screen, stuff->x, stuff->y, stuff->flags);
+
+    return Success;
+}
+
+static int
+ProcXDGAInstallColormap(ClientPtr client)
+{
+    ColormapPtr cmap;
+    int rc;
+    REQUEST(xXDGAInstallColormapReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGAInstallColormapReq);
+
+    rc = dixLookupResourceByType((pointer *)&cmap, stuff->cmap, RT_COLORMAP,
+				 client, DixInstallAccess);
+    if (rc != Success)
+        return rc;
+    DGAInstallCmap(cmap);
+    return Success;
+}
+
+
+static int
+ProcXDGASelectInput(ClientPtr client)
+{
+    REQUEST(xXDGASelectInputReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGASelectInputReq);
+
+    if(DGA_GETCLIENT(stuff->screen) == client)
+	DGASelectInput(stuff->screen, client, stuff->mask);
+
+    return Success;
+}
+
+
+static int
+ProcXDGAFillRectangle(ClientPtr client)
+{
+    REQUEST(xXDGAFillRectangleReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGAFillRectangleReq);
+
+    if(Success != DGAFillRect(stuff->screen, stuff->x, stuff->y,
+			stuff->width, stuff->height, stuff->color))
+	return BadMatch;
+
+    return Success;
+}
+
+static int
+ProcXDGACopyArea(ClientPtr client)
+{
+    REQUEST(xXDGACopyAreaReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGACopyAreaReq);
+
+    if(Success != DGABlitRect(stuff->screen, stuff->srcx, stuff->srcy,
+		stuff->width, stuff->height, stuff->dstx, stuff->dsty))
+	return BadMatch;
+
+    return Success;
+}
+
+
+static int
+ProcXDGACopyTransparentArea(ClientPtr client)
+{
+    REQUEST(xXDGACopyTransparentAreaReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGACopyTransparentAreaReq);
+
+    if(Success != DGABlitTransRect(stuff->screen, stuff->srcx, stuff->srcy,
+	stuff->width, stuff->height, stuff->dstx, stuff->dsty, stuff->key))
+	return BadMatch;
+
+    return Success;
+}
+
+
+static int
+ProcXDGAGetViewportStatus(ClientPtr client)
+{
+    REQUEST(xXDGAGetViewportStatusReq);
+    xXDGAGetViewportStatusReply rep;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGAGetViewportStatusReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    rep.status = DGAGetViewportStatus(stuff->screen);
+
+    WriteToClient(client, sizeof(xXDGAGetViewportStatusReply), (char *)&rep);
+    return Success;
+}
+
+static int
+ProcXDGASync(ClientPtr client)
+{
+    REQUEST(xXDGASyncReq);
+    xXDGASyncReply rep;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGASyncReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    DGASync(stuff->screen);
+
+    WriteToClient(client, sizeof(xXDGASyncReply), (char *)&rep);
+    return Success;
+}
+
+static int
+ProcXDGASetClientVersion(ClientPtr client)
+{
+    REQUEST(xXDGASetClientVersionReq);
+
+    DGAPrivPtr pPriv;
+
+    REQUEST_SIZE_MATCH(xXDGASetClientVersionReq);
+    if ((pPriv = DGA_GETPRIV(client)) == NULL) {
+	pPriv = malloc(sizeof(DGAPrivRec));
+	/* XXX Need to look into freeing this */
+	if (!pPriv)
+	    return BadAlloc;
+	DGA_SETPRIV(client, pPriv);
+    }
+    pPriv->major = stuff->major;
+    pPriv->minor = stuff->minor;
+
+    return Success;
+}
+
+static int
+ProcXDGAChangePixmapMode(ClientPtr client)
+{
+    REQUEST(xXDGAChangePixmapModeReq);
+    xXDGAChangePixmapModeReply rep;
+    int x, y;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGAChangePixmapModeReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    x = stuff->x;
+    y = stuff->y;
+
+    if(!DGAChangePixmapMode(stuff->screen, &x, &y, stuff->flags))
+	return BadMatch;
+
+    rep.x = x;
+    rep.y = y;
+    WriteToClient(client, sizeof(xXDGAChangePixmapModeReply), (char *)&rep);
+
+    return Success;
+}
+
+
+static int
+ProcXDGACreateColormap(ClientPtr client)
+{
+    REQUEST(xXDGACreateColormapReq);
+    int result;
+
+    if (stuff->screen >= screenInfo.numScreens)
+        return BadValue;
+
+    if(DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXDGACreateColormapReq);
+
+    if(!stuff->mode)
+	return BadValue;
+
+    result = DGACreateColormap(stuff->screen, client, stuff->id,
+				stuff->mode, stuff->alloc);
+    if(result != Success)
+	return result;
+
+    return Success;
+}
+
+/*
+ *
+ * Support for the old DGA protocol, used to live in xf86dga.c
+ *
+ */
+
+#ifdef DGA_PROTOCOL_OLD_SUPPORT
+
+
+
+static int
+ProcXF86DGAGetVideoLL(ClientPtr client)
+{
+    REQUEST(xXF86DGAGetVideoLLReq);
+    xXF86DGAGetVideoLLReply rep;
+    XDGAModeRec mode;
+    int num, offset, flags;
+    char *name;
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    REQUEST_SIZE_MATCH(xXF86DGAGetVideoLLReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    if(!DGAAvailable(stuff->screen))
+	return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    if(!(num = DGAGetOldDGAMode(stuff->screen)))
+	return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    /* get the parameters for the mode that best matches */
+    DGAGetModeInfo(stuff->screen, &mode, num);
+
+    if(!DGAOpenFramebuffer(stuff->screen, &name,
+			(unsigned char**)(&rep.offset),
+			(int*)(&rep.bank_size), &offset, &flags))
+	return BadAlloc;
+
+    rep.offset += mode.offset;
+    rep.width = mode.bytesPerScanline / (mode.bitsPerPixel >> 3);
+    rep.ram_size = rep.bank_size >> 10;
+
+    WriteToClient(client, SIZEOF(xXF86DGAGetVideoLLReply), (char *)&rep);
+    return Success;
+}
+
+static int
+ProcXF86DGADirectVideo(ClientPtr client)
+{
+    int num;
+    PixmapPtr pix;
+    XDGAModeRec mode;
+    ClientPtr owner;
+    REQUEST(xXF86DGADirectVideoReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+    REQUEST_SIZE_MATCH(xXF86DGADirectVideoReq);
+
+    if (!DGAAvailable(stuff->screen))
+	return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    owner = DGA_GETCLIENT(stuff->screen);
+
+    if (owner && owner != client)
+        return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    if (stuff->enable & XF86DGADirectGraphics) {
+	if(!(num = DGAGetOldDGAMode(stuff->screen)))
+	    return DGAErrorBase + XF86DGANoDirectVideoMode;
+    } else
+	num = 0;
+
+    if(Success != DGASetMode(stuff->screen, num, &mode, &pix))
+	return DGAErrorBase + XF86DGAScreenNotActive;
+
+    DGASetInputMode (stuff->screen,
+		     (stuff->enable & XF86DGADirectKeyb) != 0,
+		     (stuff->enable & XF86DGADirectMouse) != 0);
+
+    /* We need to track the client and attach the teardown callback */
+    if (stuff->enable &
+	(XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse)) {
+	if (!owner) {
+	    if (DGACallbackRefCount++ == 0)
+		AddCallback (&ClientStateCallback, DGAClientStateChange, NULL);
+	}
+
+	DGA_SETCLIENT(stuff->screen, client);
+    } else {
+	if (owner) {
+	    if (--DGACallbackRefCount == 0)
+		DeleteCallback(&ClientStateCallback, DGAClientStateChange, NULL);
+	}
+
+	DGA_SETCLIENT(stuff->screen, NULL);
+    }
+
+    return Success;
+}
+
+static int
+ProcXF86DGAGetViewPortSize(ClientPtr client)
+{
+    int num;
+    XDGAModeRec mode;
+    REQUEST(xXF86DGAGetViewPortSizeReq);
+    xXF86DGAGetViewPortSizeReply rep;
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    REQUEST_SIZE_MATCH(xXF86DGAGetViewPortSizeReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+
+    if (!DGAAvailable(stuff->screen))
+	return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    if(!(num = DGAGetOldDGAMode(stuff->screen)))
+	return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    DGAGetModeInfo(stuff->screen, &mode, num);
+
+    rep.width = mode.viewportWidth;
+    rep.height = mode.viewportHeight;
+
+    WriteToClient(client, SIZEOF(xXF86DGAGetViewPortSizeReply), (char *)&rep);
+    return Success;
+}
+
+static int
+ProcXF86DGASetViewPort(ClientPtr client)
+{
+    REQUEST(xXF86DGASetViewPortReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    if (DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXF86DGASetViewPortReq);
+
+    if (!DGAAvailable(stuff->screen))
+	return DGAErrorBase + XF86DGANoDirectVideoMode;
+
+    if (!DGAActive(stuff->screen))
+	return DGAErrorBase + XF86DGADirectNotActivated;
+
+    if (DGASetViewport(stuff->screen, stuff->x, stuff->y, DGA_FLIP_RETRACE)
+		!= Success)
+	return DGAErrorBase + XF86DGADirectNotActivated;
+
+    return Success;
+}
+
+static int
+ProcXF86DGAGetVidPage(ClientPtr client)
+{
+    REQUEST(xXF86DGAGetVidPageReq);
+    xXF86DGAGetVidPageReply rep;
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    REQUEST_SIZE_MATCH(xXF86DGAGetVidPageReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.vpage = 0;  /* silently fail */
+
+    WriteToClient(client, SIZEOF(xXF86DGAGetVidPageReply), (char *)&rep);
+    return Success;
+}
+
+
+static int
+ProcXF86DGASetVidPage(ClientPtr client)
+{
+    REQUEST(xXF86DGASetVidPageReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    REQUEST_SIZE_MATCH(xXF86DGASetVidPageReq);
+
+    /* silently fail */
+
+    return Success;
+}
+
+
+static int
+ProcXF86DGAInstallColormap(ClientPtr client)
+{
+    ColormapPtr pcmp;
+    int rc;
+    REQUEST(xXF86DGAInstallColormapReq);
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    if (DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXF86DGAInstallColormapReq);
+
+    if (!DGAActive(stuff->screen))
+	return DGAErrorBase + XF86DGADirectNotActivated;
+
+    rc = dixLookupResourceByType((pointer *)&pcmp, stuff->id, RT_COLORMAP,
+				 client, DixInstallAccess);
+    if (rc == Success) {
+	DGAInstallCmap(pcmp);
+        return Success;
+    } else {
+        return rc;
+    }
+}
+
+static int
+ProcXF86DGAQueryDirectVideo(ClientPtr client)
+{
+    REQUEST(xXF86DGAQueryDirectVideoReq);
+    xXF86DGAQueryDirectVideoReply rep;
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    REQUEST_SIZE_MATCH(xXF86DGAQueryDirectVideoReq);
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.flags = 0;
+
+    if (DGAAvailable(stuff->screen))
+	rep.flags = XF86DGADirectPresent;
+
+    WriteToClient(client, SIZEOF(xXF86DGAQueryDirectVideoReply), (char *)&rep);
+    return Success;
+}
+
+static int
+ProcXF86DGAViewPortChanged(ClientPtr client)
+{
+    REQUEST(xXF86DGAViewPortChangedReq);
+    xXF86DGAViewPortChangedReply rep;
+
+    if (stuff->screen >= screenInfo.numScreens)
+	return BadValue;
+
+    if (DGA_GETCLIENT(stuff->screen) != client)
+        return DGAErrorBase + XF86DGADirectNotActivated;
+
+    REQUEST_SIZE_MATCH(xXF86DGAViewPortChangedReq);
+
+    if (!DGAActive(stuff->screen))
+	return DGAErrorBase + XF86DGADirectNotActivated;
+
+    rep.type = X_Reply;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.result = 1;
+
+    WriteToClient(client, SIZEOF(xXF86DGAViewPortChangedReply), (char *)&rep);
+    return Success;
+}
+
+#endif /* DGA_PROTOCOL_OLD_SUPPORT */
+
+static int
+SProcXDGADispatch (ClientPtr client)
+{
+   return DGAErrorBase + XF86DGAClientNotLocal;
+}
+
+#if 0
+#define DGA_REQ_DEBUG
+#endif
+
+#ifdef DGA_REQ_DEBUG
+static char *dgaMinor[] = {
+    "QueryVersion",
+    "GetVideoLL",
+    "DirectVideo",
+    "GetViewPortSize",
+    "SetViewPort",
+    "GetVidPage",
+    "SetVidPage",
+    "InstallColormap",
+    "QueryDirectVideo",
+    "ViewPortChanged",
+    "10",
+    "11",
+    "QueryModes",
+    "SetMode",
+    "SetViewport",
+    "InstallColormap",
+    "SelectInput",
+    "FillRectangle",
+    "CopyArea",
+    "CopyTransparentArea",
+    "GetViewportStatus",
+    "Sync",
+    "OpenFramebuffer",
+    "CloseFramebuffer",
+    "SetClientVersion",
+    "ChangePixmapMode",
+    "CreateColormap",
+};
+#endif
+
+static int
+ProcXDGADispatch (ClientPtr client)
+{
+    REQUEST(xReq);
+
+    if (!LocalClient(client))
+	return DGAErrorBase + XF86DGAClientNotLocal;
+
+#ifdef DGA_REQ_DEBUG
+    if (stuff->data <= X_XDGACreateColormap)
+	fprintf (stderr, "    DGA %s\n", dgaMinor[stuff->data]);
+#endif
+
+    switch (stuff->data){
+    /*
+     * DGA2 Protocol
+     */
+    case X_XDGAQueryVersion:
+	return ProcXDGAQueryVersion(client);
+    case X_XDGAQueryModes:
+	return ProcXDGAQueryModes(client);
+    case X_XDGASetMode:
+	return ProcXDGASetMode(client);
+    case X_XDGAOpenFramebuffer:
+	return ProcXDGAOpenFramebuffer(client);
+    case X_XDGACloseFramebuffer:
+	return ProcXDGACloseFramebuffer(client);
+    case X_XDGASetViewport:
+	return ProcXDGASetViewport(client);
+    case X_XDGAInstallColormap:
+	return ProcXDGAInstallColormap(client);
+    case X_XDGASelectInput:
+	return ProcXDGASelectInput(client);
+    case X_XDGAFillRectangle:
+	return ProcXDGAFillRectangle(client);
+    case X_XDGACopyArea:
+	return ProcXDGACopyArea(client);
+    case X_XDGACopyTransparentArea:
+	return ProcXDGACopyTransparentArea(client);
+    case X_XDGAGetViewportStatus:
+	return ProcXDGAGetViewportStatus(client);
+    case X_XDGASync:
+	return ProcXDGASync(client);
+    case X_XDGASetClientVersion:
+	return ProcXDGASetClientVersion(client);
+    case X_XDGAChangePixmapMode:
+	return ProcXDGAChangePixmapMode(client);
+    case X_XDGACreateColormap:
+	return ProcXDGACreateColormap(client);
+    /*
+     * Old DGA Protocol
+     */
+#ifdef DGA_PROTOCOL_OLD_SUPPORT
+    case X_XF86DGAGetVideoLL:
+	return ProcXF86DGAGetVideoLL(client);
+    case X_XF86DGADirectVideo:
+	return ProcXF86DGADirectVideo(client);
+    case X_XF86DGAGetViewPortSize:
+	return ProcXF86DGAGetViewPortSize(client);
+    case X_XF86DGASetViewPort:
+	return ProcXF86DGASetViewPort(client);
+    case X_XF86DGAGetVidPage:
+	return ProcXF86DGAGetVidPage(client);
+    case X_XF86DGASetVidPage:
+	return ProcXF86DGASetVidPage(client);
+    case X_XF86DGAInstallColormap:
+	return ProcXF86DGAInstallColormap(client);
+    case X_XF86DGAQueryDirectVideo:
+	return ProcXF86DGAQueryDirectVideo(client);
+    case X_XF86DGAViewPortChanged:
+	return ProcXF86DGAViewPortChanged(client);
+#endif /* DGA_PROTOCOL_OLD_SUPPORT */
+    default:
+	return BadRequest;
+    }
+}
+
+void
+XFree86DGARegister(INITARGS)
+{
+  XDGAEventBase = &DGAEventBase;
+}
+
+void
+XFree86DGAExtensionInit(INITARGS)
+{
+    ExtensionEntry* extEntry;
+
+    if (!dixRegisterPrivateKey(&DGAClientPrivateKeyRec, PRIVATE_CLIENT, 0))
+	return;
+
+    if (!dixRegisterPrivateKey(&DGAScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
+	return;
+
+    if ((extEntry = AddExtension(XF86DGANAME,
+				XF86DGANumberEvents,
+				XF86DGANumberErrors,
+				ProcXDGADispatch,
+				SProcXDGADispatch,
+				XDGAResetProc,
+				StandardMinorOpcode))) {
+	int i;
+
+	DGAReqCode = (unsigned char)extEntry->base;
+	DGAErrorBase = extEntry->errorBase;
+	DGAEventBase = extEntry->eventBase;
+	for (i = KeyPress; i <= MotionNotify; i++)
+	    SetCriticalEvent (DGAEventBase + i);
+    }
+}