Move DGA from extmod to built-in

Rather than leave DGA languishing in extmod, move it to be a built-in
extension.  As it's quite specific to the Xorg DDX, just move it
sideways to the rest of the DGA code in hw/xfree86/common, and
initialise it from xf86ExtensionInit, rather than miinitext.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Acked-by:  Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

4 files changed, 1154 insertions, 1 deletions

diff --git a/hw/xfree86/common/Makefile.am b/hw/xfree86/common/Makefile.am
index 556b9ccc7..ea98449ca 100644
--- a/hw/xfree86/common/Makefile.am
+++ b/hw/xfree86/common/Makefile.am
@@ -20,6 +20,7 @@ endif
 
 if DGA
 DGASOURCES = xf86DGA.c
+DGA_SDK = dgaproc.h
 endif
 
 if XORG_BUS_PLATFORM
@@ -60,7 +61,7 @@ INCLUDES = $(XORG_INCS) -I$(srcdir)/../ddc -I$(srcdir)/../i2c \
 sdk_HEADERS = compiler.h fourcc.h xf86.h xf86Module.h xf86Opt.h \
               xf86PciInfo.h xf86Priv.h xf86Privstr.h \
               xf86cmap.h xf86fbman.h xf86str.h xf86Xinput.h xisb.h \
-              $(XVSDKINCS) $(XF86VMODE_SDK) xorgVersion.h \
+              $(XVSDKINCS) $(XF86VMODE_SDK) $(DGA_SDK) xorgVersion.h \
               xf86sbusBus.h xf86VGAarbiter.h xf86Optionstr.h xf86platformBus.h
 
 DISTCLEANFILES = xf86Build.h
diff --git a/hw/xfree86/common/dgaproc.h b/hw/xfree86/common/dgaproc.h
new file mode 100644
index 000000000..2c2fae097
--- /dev/null
+++ b/hw/xfree86/common/dgaproc.h
@@ -0,0 +1,115 @@
+
+#ifndef __DGAPROC_H
+#define __DGAPROC_H
+
+#include <X11/Xproto.h>
+#include "pixmap.h"
+
+#define DGA_CONCURRENT_ACCESS	0x00000001
+#define DGA_FILL_RECT		0x00000002
+#define DGA_BLIT_RECT		0x00000004
+#define DGA_BLIT_RECT_TRANS	0x00000008
+#define DGA_PIXMAP_AVAILABLE	0x00000010
+
+#define DGA_INTERLACED		0x00010000
+#define DGA_DOUBLESCAN		0x00020000
+
+#define DGA_FLIP_IMMEDIATE	0x00000001
+#define DGA_FLIP_RETRACE	0x00000002
+
+#define DGA_COMPLETED		0x00000000
+#define DGA_PENDING		0x00000001
+
+#define DGA_NEED_ROOT		0x00000001
+
+typedef struct {
+    int num;                    /* A unique identifier for the mode (num > 0) */
+    char *name;                 /* name of mode given in the XF86Config */
+    int VSync_num;
+    int VSync_den;
+    int flags;                  /* DGA_CONCURRENT_ACCESS, etc... */
+    int imageWidth;             /* linear accessible portion (pixels) */
+    int imageHeight;
+    int pixmapWidth;            /* Xlib accessible portion (pixels) */
+    int pixmapHeight;           /* both fields ignored if no concurrent access */
+    int bytesPerScanline;
+    int byteOrder;              /* MSBFirst, LSBFirst */
+    int depth;
+    int bitsPerPixel;
+    unsigned long red_mask;
+    unsigned long green_mask;
+    unsigned long blue_mask;
+    short visualClass;
+    int viewportWidth;
+    int viewportHeight;
+    int xViewportStep;          /* viewport position granularity */
+    int yViewportStep;
+    int maxViewportX;           /* max viewport origin */
+    int maxViewportY;
+    int viewportFlags;          /* types of page flipping possible */
+    int offset;
+    int reserved1;
+    int reserved2;
+} XDGAModeRec, *XDGAModePtr;
+
+/* DDX interface */
+
+extern _X_EXPORT int
+ DGASetMode(int Index, int num, XDGAModePtr mode, PixmapPtr *pPix);
+
+extern _X_EXPORT void
+ DGASetInputMode(int Index, Bool keyboard, Bool mouse);
+
+extern _X_EXPORT void
+ DGASelectInput(int Index, ClientPtr client, long mask);
+
+extern _X_EXPORT Bool DGAAvailable(int Index);
+extern _X_EXPORT Bool DGAScreenAvailable(ScreenPtr pScreen);
+extern _X_EXPORT Bool DGAActive(int Index);
+extern _X_EXPORT void DGAShutdown(void);
+extern _X_EXPORT void DGAInstallCmap(ColormapPtr cmap);
+extern _X_EXPORT int DGAGetViewportStatus(int Index);
+extern _X_EXPORT int DGASync(int Index);
+
+extern _X_EXPORT int
+ DGAFillRect(int Index, int x, int y, int w, int h, unsigned long color);
+
+extern _X_EXPORT int
+ DGABlitRect(int Index, int srcx, int srcy, int w, int h, int dstx, int dsty);
+
+extern _X_EXPORT int
+
+DGABlitTransRect(int Index,
+                 int srcx, int srcy,
+                 int w, int h, int dstx, int dsty, unsigned long color);
+
+extern _X_EXPORT int
+ DGASetViewport(int Index, int x, int y, int mode);
+
+extern _X_EXPORT int DGAGetModes(int Index);
+extern _X_EXPORT int DGAGetOldDGAMode(int Index);
+
+extern _X_EXPORT int DGAGetModeInfo(int Index, XDGAModePtr mode, int num);
+
+extern _X_EXPORT Bool DGAVTSwitch(void);
+extern _X_EXPORT Bool DGAStealButtonEvent(DeviceIntPtr dev, int Index,
+                                          int button, int is_down);
+extern _X_EXPORT Bool DGAStealMotionEvent(DeviceIntPtr dev, int Index, int dx,
+                                          int dy);
+extern _X_EXPORT Bool DGAStealKeyEvent(DeviceIntPtr dev, int Index,
+                                       int key_code, int is_down);
+
+extern _X_EXPORT Bool DGAOpenFramebuffer(int Index, char **name,
+                                         unsigned char **mem, int *size,
+                                         int *offset, int *flags);
+extern _X_EXPORT void DGACloseFramebuffer(int Index);
+extern _X_EXPORT Bool DGAChangePixmapMode(int Index, int *x, int *y, int mode);
+extern _X_EXPORT int DGACreateColormap(int Index, ClientPtr client, int id,
+                                       int mode, int alloc);
+
+extern _X_EXPORT unsigned char DGAReqCode;
+extern _X_EXPORT int DGAErrorBase;
+extern _X_EXPORT int DGAEventBase;
+extern _X_EXPORT int *XDGAEventBase;
+
+#endif                          /* __DGAPROC_H */
diff --git a/hw/xfree86/common/xf86DGA.c b/hw/xfree86/common/xf86DGA.c
index ab172a836..00b90226b 100644
--- a/hw/xfree86/common/xf86DGA.c
+++ b/hw/xfree86/common/xf86DGA.c
@@ -1,4 +1,6 @@
 /*
+ * Copyright (c) 1995  Jon Tombs
+ * Copyright (c) 1995, 1996, 1999  XFree86 Inc
  * Copyright (c) 1998-2002 by The XFree86 Project, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -27,10 +29,20 @@
  * Written by Mark Vojkovich
  */
 
+/*
+ * This is quite literally just two files glued together:
+ * hw/xfree86/common/xf86DGA.c is the first part, and
+ * hw/xfree86/dixmods/extmod/xf86dga2.c is the second part.  One day, if
+ * someone actually cares about DGA, it'd be nice to clean this up.  But trust
+ * me, I am not that person.
+ */
+
 #ifdef HAVE_XORG_CONFIG_H
 #include <xorg-config.h>
 #endif
 
+#include <X11/X.h>
+#include <X11/Xproto.h>
 #include "xf86.h"
 #include "xf86str.h"
 #include "xf86Priv.h"
@@ -48,9 +60,24 @@
 #include "exevents.h"
 #include "eventstr.h"
 #include "eventconvert.h"
+#include "xf86Extensions.h"
 
 #include "mi.h"
 
+#include "misc.h"
+#include "dixstruct.h"
+#include "dixevents.h"
+#include "extnsionst.h"
+#include "cursorstr.h"
+#include "scrnintstr.h"
+#include "swaprep.h"
+#include "dgaproc.h"
+#include "protocol-versions.h"
+
+#include <string.h>
+
+#define DGA_PROTOCOL_OLD_SUPPORT 1
+
 static DevPrivateKeyRec DGAScreenKeyRec;
 
 #define DGAScreenKeyRegistered dixPrivateKeyRegistered(&DGAScreenKeyRec)
@@ -1178,3 +1205,999 @@ DGAHandleEvent(int screen_num, InternalEvent *ev, DeviceIntPtr device)
         break;
     }
 }
+
+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(void)
+{
+    XDGAEventBase = &DGAEventBase;
+}
+
+void
+XFree86DGAExtensionInit(void)
+{
+    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);
+    }
+}
diff --git a/hw/xfree86/common/xf86Extensions.c b/hw/xfree86/common/xf86Extensions.c
index aed0635a2..7a84988d7 100644
--- a/hw/xfree86/common/xf86Extensions.c
+++ b/hw/xfree86/common/xf86Extensions.c
@@ -41,10 +41,23 @@
 #include "xselinux.h"
 #endif
 
+#ifdef XFreeXDGA
+#include <X11/extensions/xf86dgaproto.h>
+#endif
+
 /*
  * DDX-specific extensions.
  */
 static ExtensionModule extensionModules[] = {
+#ifdef XFreeXDGA
+    {
+	XFree86DGAExtensionInit,
+	XF86DGANAME,
+	&noXFree86DGAExtension,
+	XFree86DGARegister,
+	NULL
+    },
+#endif
 };
 
 static void
@@ -52,6 +65,7 @@ load_extension_config(void)
 {
     XF86ConfModulePtr mod_con = xf86configptr->conf_modules;
     XF86LoadPtr modp;
+    int i;
 
     /* Only the best. */
     if (!mod_con)