Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 2109 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/GL/dri/dri.c b/nx-X11/programs/Xserver/GL/dri/dri.c
new file mode 100644
index 000000000..424a21c68
--- /dev/null
+++ b/nx-X11/programs/Xserver/GL/dri/dri.c
@@ -0,0 +1,2109 @@
+/* $XFree86: xc/programs/Xserver/GL/dri/dri.c,v 1.39 2003/11/10 18:21:41 tsi Exp $ */
+/**************************************************************************
+
+Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+Copyright 2000 VA Linux Systems, Inc.
+All Rights Reserved.
+
+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, sub license, 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 (including the
+next paragraph) 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 NON-INFRINGEMENT.
+IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
+
+**************************************************************************/
+
+/*
+ * Authors:
+ *   Jens Owen <jens@tungstengraphics.com>
+ *   Rickard E. (Rik) Faith <faith@valinux.com>
+ *
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "xf86.h"
+#ifdef XFree86LOADER
+#include "xf86_ansic.h"
+#else
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#define NEED_REPLIES
+#define NEED_EVENTS
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "dixstruct.h"
+#include "extnsionst.h"
+#include "colormapst.h"
+#include "cursorstr.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "servermd.h"
+#define _XF86DRI_SERVER_
+#include "xf86dristr.h"
+#include "swaprep.h"
+#include "xf86str.h"
+#include "dri.h"
+#include "sarea.h"
+#include "dristruct.h"
+#include "xf86.h"
+#include "xf86drm.h"
+#include "glxserver.h"
+#include "mi.h"
+#include "mipointer.h"
+
+#if defined(XFree86LOADER) && !defined(PANORAMIX)
+extern Bool noPanoramiXExtension;
+#endif
+
+static int DRIScreenPrivIndex = -1;
+static int DRIWindowPrivIndex = -1;
+static unsigned long DRIGeneration = 0;
+static unsigned int DRIDrawableValidationStamp = 0;
+
+static RESTYPE DRIDrawablePrivResType;
+static RESTYPE DRIContextPrivResType;
+static void    DRIDestroyDummyContext(ScreenPtr pScreen, Bool hasCtxPriv);
+
+				/* Wrapper just like xf86DrvMsg, but
+				   without the verbosity level checking.
+				   This will make it easy to turn off some
+				   messages later, based on verbosity
+				   level. */
+
+/*
+ * Since we're already referencing things from the XFree86 common layer in
+ * this file, we'd might as well just call xf86VDrvMsgVerb, and have
+ * consistent message formatting.  The verbosity of these messages can be
+ * easily changed here.
+ */
+#define DRI_MSG_VERBOSITY 1
+static void
+DRIDrvMsg(int scrnIndex, MessageType type, const char *format, ...)
+{
+    va_list     ap;
+
+    va_start(ap, format);
+    xf86VDrvMsgVerb(scrnIndex, type, DRI_MSG_VERBOSITY, format, ap);
+    va_end(ap);
+}
+
+Bool
+DRIScreenInit(ScreenPtr pScreen, DRIInfoPtr pDRIInfo, int *pDRMFD)
+{
+    DRIScreenPrivPtr    pDRIPriv;
+    drm_context_t *       reserved;
+    int                 reserved_count;
+    int                 i, fd, drmWasAvailable;
+    Bool                xineramaInCore = FALSE;
+    int                 err = 0;
+    char                *openbusid;
+    drmVersionPtr       drmlibv;
+    int                 drmlibmajor, drmlibminor, drmdimajor, drmdiminor;
+
+    if (DRIGeneration != serverGeneration) {
+	if ((DRIScreenPrivIndex = AllocateScreenPrivateIndex()) < 0)
+	    return FALSE;
+	DRIGeneration = serverGeneration;
+    }
+
+    /* If the DRI extension is disabled, do not initialize the DRI */
+    if (noXFree86DRIExtension) {
+	DRIDrvMsg(pScreen->myNum, X_WARNING,
+		  "Direct rendering has been disabled.\n");
+	return FALSE;
+    }
+
+    /*
+     * If Xinerama is on, don't allow DRI to initialise.  It won't be usable
+     * anyway.
+     */
+#if defined(PANORAMIX) && !defined(XFree86LOADER)
+    xineramaInCore = TRUE;
+#elif defined(XFree86LOADER)
+    if (xf86LoaderCheckSymbol("noPanoramiXExtension"))
+	xineramaInCore = TRUE;
+#endif
+
+#if defined(PANORAMIX) || defined(XFree86LOADER)
+    if (xineramaInCore) {
+	if (!noPanoramiXExtension) {
+	    DRIDrvMsg(pScreen->myNum, X_WARNING,
+		"Direct rendering is not supported when Xinerama is enabled\n");
+	    return FALSE;
+	}
+    }
+#endif
+
+    drmWasAvailable = drmAvailable();
+
+    /* Check the DRM lib version.
+     * drmGetLibVersion was not supported in version 1.0, so check for
+     * symbol first to avoid possible crash or hang.
+     */
+    drmlibmajor = 1;
+    drmlibminor = 0;
+    if (xf86LoaderCheckSymbol("drmGetLibVersion")) {
+	drmlibv = drmGetLibVersion(-1);
+	if (drmlibv != NULL) {
+	    drmlibmajor = drmlibv->version_major;
+	    drmlibminor = drmlibv->version_minor;
+	    drmFreeVersion(drmlibv);
+	}
+    }
+
+    /* Check if the libdrm can handle falling back to loading based on name
+     * if a busid string is passed.
+     */
+    if (drmlibmajor == 1 && drmlibminor >= 2)
+	openbusid = pDRIInfo->busIdString;
+    else
+	openbusid = NULL;
+
+    /* Note that drmOpen will try to load the kernel module, if needed. */
+    fd = drmOpen(pDRIInfo->drmDriverName, openbusid);
+    if (fd < 0) {
+        /* failed to open DRM */
+        pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+        DRIDrvMsg(pScreen->myNum, X_INFO,
+                  "[drm] drmOpen failed\n");
+        return FALSE;
+    }
+
+    if (!drmWasAvailable) {
+       /* drmOpen loaded the kernel module, print a message to say so */
+       DRIDrvMsg(pScreen->myNum, X_INFO,
+                 "[drm] loaded kernel module for \"%s\" driver\n",
+                 pDRIInfo->drmDriverName);
+    }
+
+    pDRIPriv = (DRIScreenPrivPtr) xcalloc(1, sizeof(DRIScreenPrivRec));
+    if (!pDRIPriv) {
+        pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+        return FALSE;
+    }
+
+    pScreen->devPrivates[DRIScreenPrivIndex].ptr = (pointer) pDRIPriv;
+    pDRIPriv->drmFD = fd;
+    pDRIPriv->directRenderingSupport = TRUE;
+    pDRIPriv->pDriverInfo = pDRIInfo;
+    pDRIPriv->nrWindows = 0;
+    pDRIPriv->fullscreen = NULL;
+
+    pDRIPriv->createDummyCtx     = pDRIInfo->createDummyCtx;
+    pDRIPriv->createDummyCtxPriv = pDRIInfo->createDummyCtxPriv;
+
+    pDRIPriv->grabbedDRILock = FALSE;
+    pDRIPriv->drmSIGIOHandlerInstalled = FALSE;
+
+    if (drmlibmajor == 1 && drmlibminor >= 2) {
+	drmSetVersion sv;
+
+	/* Get the interface version, asking for 1.1. */
+	sv.drm_di_major = 1;
+	sv.drm_di_minor = 1;
+	sv.drm_dd_major = -1;
+	err = drmSetInterfaceVersion(pDRIPriv->drmFD, &sv);
+	if (err == 0) {
+	    drmdimajor = sv.drm_di_major;
+	    drmdiminor = sv.drm_di_minor;
+	} else {
+	    /* failure, so set it to 1.0.0. */
+	    drmdimajor = 1;
+	    drmdiminor = 0;
+	}
+    }
+    else {
+	/* We can't check the DI DRM interface version, so set it to 1.0.0. */
+	drmdimajor = 1;
+	drmdiminor = 0;
+    }
+    DRIDrvMsg(pScreen->myNum, X_INFO,
+              "[drm] DRM interface version %d.%d\n", drmdimajor, drmdiminor);
+
+    /* If the interface minor number is 1.1, then we've opened a DRM device
+     * that already had the busid set through drmOpen.
+     */
+    if (drmdimajor == 1 && drmdiminor >= 1)
+	err = 0;
+    else
+	err = drmSetBusid(pDRIPriv->drmFD, pDRIPriv->pDriverInfo->busIdString);
+
+    if (err < 0) {
+	pDRIPriv->directRenderingSupport = FALSE;
+	pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+	drmClose(pDRIPriv->drmFD);
+        DRIDrvMsg(pScreen->myNum, X_INFO,
+                  "[drm] drmSetBusid failed (%d, %s), %s\n",
+                  pDRIPriv->drmFD, pDRIPriv->pDriverInfo->busIdString, strerror(-err));
+	return FALSE;
+    }
+
+    *pDRMFD = pDRIPriv->drmFD;
+    DRIDrvMsg(pScreen->myNum, X_INFO,
+	      "[drm] created \"%s\" driver at busid \"%s\"\n",
+	      pDRIPriv->pDriverInfo->drmDriverName,
+	      pDRIPriv->pDriverInfo->busIdString);
+
+    if (drmAddMap( pDRIPriv->drmFD,
+		   0,
+		   pDRIPriv->pDriverInfo->SAREASize,
+		   DRM_SHM,
+		   DRM_CONTAINS_LOCK,
+		   &pDRIPriv->hSAREA) < 0)
+    {
+	pDRIPriv->directRenderingSupport = FALSE;
+	pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+	drmClose(pDRIPriv->drmFD);
+        DRIDrvMsg(pScreen->myNum, X_INFO,
+                  "[drm] drmAddMap failed\n");
+	return FALSE;
+    }
+    DRIDrvMsg(pScreen->myNum, X_INFO,
+	      "[drm] added %d byte SAREA at %p\n",
+	      pDRIPriv->pDriverInfo->SAREASize, pDRIPriv->hSAREA);
+
+    if (drmMap( pDRIPriv->drmFD,
+		pDRIPriv->hSAREA,
+		pDRIPriv->pDriverInfo->SAREASize,
+		(drmAddressPtr)(&pDRIPriv->pSAREA)) < 0)
+    {
+	pDRIPriv->directRenderingSupport = FALSE;
+	pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+	drmClose(pDRIPriv->drmFD);
+        DRIDrvMsg(pScreen->myNum, X_INFO,
+                  "[drm] drmMap failed\n");
+	return FALSE;
+    }
+    memset(pDRIPriv->pSAREA, 0, pDRIPriv->pDriverInfo->SAREASize);
+    DRIDrvMsg(pScreen->myNum, X_INFO, "[drm] mapped SAREA %p to %p\n",
+	      pDRIPriv->hSAREA, pDRIPriv->pSAREA);
+
+    if (drmAddMap( pDRIPriv->drmFD,
+		   (drm_handle_t)pDRIPriv->pDriverInfo->frameBufferPhysicalAddress,
+		   pDRIPriv->pDriverInfo->frameBufferSize,
+		   DRM_FRAME_BUFFER,
+		   0,
+		   &pDRIPriv->hFrameBuffer) < 0)
+    {
+	pDRIPriv->directRenderingSupport = FALSE;
+	pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+	drmUnmap(pDRIPriv->pSAREA, pDRIPriv->pDriverInfo->SAREASize);
+	drmClose(pDRIPriv->drmFD);
+        DRIDrvMsg(pScreen->myNum, X_INFO,
+                  "[drm] drmAddMap failed\n");
+	return FALSE;
+    }
+    DRIDrvMsg(pScreen->myNum, X_INFO, "[drm] framebuffer handle = %p\n",
+	      pDRIPriv->hFrameBuffer);
+
+				/* Add tags for reserved contexts */
+    if ((reserved = drmGetReservedContextList(pDRIPriv->drmFD,
+					      &reserved_count))) {
+	int  i;
+	void *tag;
+
+	for (i = 0; i < reserved_count; i++) {
+	    tag = DRICreateContextPrivFromHandle(pScreen,
+						 reserved[i],
+						 DRI_CONTEXT_RESERVED);
+	    drmAddContextTag(pDRIPriv->drmFD, reserved[i], tag);
+	}
+	drmFreeReservedContextList(reserved);
+	DRIDrvMsg(pScreen->myNum, X_INFO,
+		  "[drm] added %d reserved context%s for kernel\n",
+		  reserved_count, reserved_count > 1 ? "s" : "");
+    }
+
+    /* validate max drawable table entry set by driver */
+    if ((pDRIPriv->pDriverInfo->maxDrawableTableEntry <= 0) ||
+        (pDRIPriv->pDriverInfo->maxDrawableTableEntry > SAREA_MAX_DRAWABLES)) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "Invalid max drawable table size set by driver: %d\n",
+		      pDRIPriv->pDriverInfo->maxDrawableTableEntry);
+    }
+
+    /* Initialize drawable tables (screen private and SAREA) */
+    for( i=0; i < pDRIPriv->pDriverInfo->maxDrawableTableEntry; i++) {
+	pDRIPriv->DRIDrawables[i] = NULL;
+	pDRIPriv->pSAREA->drawableTable[i].stamp = 0;
+	pDRIPriv->pSAREA->drawableTable[i].flags = 0;
+    }
+
+    return TRUE;
+}
+
+Bool
+DRIFinishScreenInit(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr  pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIInfoPtr        pDRIInfo = pDRIPriv->pDriverInfo;
+    DRIContextFlags   flags    = 0;
+    DRIContextPrivPtr pDRIContextPriv;
+
+				/* Set up flags for DRICreateContextPriv */
+    switch (pDRIInfo->driverSwapMethod) {
+    case DRI_KERNEL_SWAP:    flags = DRI_CONTEXT_2DONLY;    break;
+    case DRI_HIDE_X_CONTEXT: flags = DRI_CONTEXT_PRESERVED; break;
+    }
+
+    if (!(pDRIContextPriv = DRICreateContextPriv(pScreen,
+						 &pDRIPriv->myContext,
+						 flags))) {
+	DRIDrvMsg(pScreen->myNum, X_ERROR,
+		  "failed to create server context\n");
+	return FALSE;
+    }
+    pDRIPriv->myContextPriv = pDRIContextPriv;
+
+    DRIDrvMsg(pScreen->myNum, X_INFO,
+	      "X context handle = %p\n", pDRIPriv->myContext);
+
+    /* Now that we have created the X server's context, we can grab the
+     * hardware lock for the X server.
+     */
+    DRILock(pScreen, 0);
+    pDRIPriv->grabbedDRILock = TRUE;
+
+    /* pointers so that we can prevent memory leaks later */
+    pDRIPriv->hiddenContextStore    = NULL;
+    pDRIPriv->partial3DContextStore = NULL;
+
+    switch(pDRIInfo->driverSwapMethod) {
+    case DRI_HIDE_X_CONTEXT:
+	/* Server will handle 3D swaps, and hide 2D swaps from kernel.
+	 * Register server context as a preserved context.
+	 */
+
+	/* allocate memory for hidden context store */
+	pDRIPriv->hiddenContextStore
+	    = (void *)xcalloc(1, pDRIInfo->contextSize);
+	if (!pDRIPriv->hiddenContextStore) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "failed to allocate hidden context\n");
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return FALSE;
+	}
+
+	/* allocate memory for partial 3D context store */
+	pDRIPriv->partial3DContextStore
+	    = (void *)xcalloc(1, pDRIInfo->contextSize);
+	if (!pDRIPriv->partial3DContextStore) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "[DRI] failed to allocate partial 3D context\n");
+	    xfree(pDRIPriv->hiddenContextStore);
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return FALSE;
+	}
+
+	/* save initial context store */
+	if (pDRIInfo->SwapContext) {
+	    (*pDRIInfo->SwapContext)(
+		pScreen,
+		DRI_NO_SYNC,
+		DRI_2D_CONTEXT,
+		pDRIPriv->hiddenContextStore,
+		DRI_NO_CONTEXT,
+		NULL);
+	}
+	/* fall through */
+
+    case DRI_SERVER_SWAP:
+        /* For swap methods of DRI_SERVER_SWAP and DRI_HIDE_X_CONTEXT
+         * setup signal handler for receiving swap requests from kernel
+	 */
+	if (!(pDRIPriv->drmSIGIOHandlerInstalled =
+	      drmInstallSIGIOHandler(pDRIPriv->drmFD, DRISwapContext))) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "[drm] failed to setup DRM signal handler\n");
+	    if (pDRIPriv->hiddenContextStore)
+		xfree(pDRIPriv->hiddenContextStore);
+	    if (pDRIPriv->partial3DContextStore)
+		xfree(pDRIPriv->partial3DContextStore);
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return FALSE;
+	} else {
+	    DRIDrvMsg(pScreen->myNum, X_INFO,
+		      "[drm] installed DRM signal handler\n");
+	}
+
+    default:
+	break;
+    }
+
+    /* Wrap DRI support */
+    if (pDRIInfo->wrap.ValidateTree) {
+	pDRIPriv->wrap.ValidateTree     = pScreen->ValidateTree;
+	pScreen->ValidateTree           = pDRIInfo->wrap.ValidateTree;
+    }
+    if (pDRIInfo->wrap.PostValidateTree) {
+	pDRIPriv->wrap.PostValidateTree = pScreen->PostValidateTree;
+	pScreen->PostValidateTree       = pDRIInfo->wrap.PostValidateTree;
+    }
+    if (pDRIInfo->wrap.WindowExposures) {
+	pDRIPriv->wrap.WindowExposures  = pScreen->WindowExposures;
+	pScreen->WindowExposures        = pDRIInfo->wrap.WindowExposures;
+    }
+    if (pDRIInfo->wrap.CopyWindow) {
+	pDRIPriv->wrap.CopyWindow       = pScreen->CopyWindow;
+	pScreen->CopyWindow             = pDRIInfo->wrap.CopyWindow;
+    }
+    if (pDRIInfo->wrap.ClipNotify) {
+	pDRIPriv->wrap.ClipNotify       = pScreen->ClipNotify;
+	pScreen->ClipNotify             = pDRIInfo->wrap.ClipNotify;
+    }
+    if (pDRIInfo->wrap.AdjustFrame) {
+	ScrnInfoPtr pScrn               = xf86Screens[pScreen->myNum];
+	pDRIPriv->wrap.AdjustFrame      = pScrn->AdjustFrame;
+	pScrn->AdjustFrame              = pDRIInfo->wrap.AdjustFrame;
+    }
+    pDRIPriv->wrapped = TRUE;
+
+    DRIDrvMsg(pScreen->myNum, X_INFO, "[DRI] installation complete\n");
+
+    return TRUE;
+}
+
+void
+DRICloseScreen(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIInfoPtr       pDRIInfo;
+    drm_context_t *    reserved;
+    int              reserved_count;
+
+    if (pDRIPriv && pDRIPriv->directRenderingSupport) {
+
+        pDRIInfo = pDRIPriv->pDriverInfo;
+
+	if (pDRIPriv->wrapped) {
+	    /* Unwrap DRI Functions */
+	    if (pDRIInfo->wrap.ValidateTree) {
+		pScreen->ValidateTree           = pDRIPriv->wrap.ValidateTree;
+		pDRIPriv->wrap.ValidateTree     = NULL;
+	    }
+	    if (pDRIInfo->wrap.PostValidateTree) {
+		pScreen->PostValidateTree       = pDRIPriv->wrap.PostValidateTree;
+		pDRIPriv->wrap.PostValidateTree = NULL;
+	    }
+	    if (pDRIInfo->wrap.WindowExposures) {
+		pScreen->WindowExposures        = pDRIPriv->wrap.WindowExposures;
+		pDRIPriv->wrap.WindowExposures  = NULL;
+	    }
+	    if (pDRIInfo->wrap.CopyWindow) {
+		pScreen->CopyWindow             = pDRIPriv->wrap.CopyWindow;
+		pDRIPriv->wrap.CopyWindow       = NULL;
+	    }
+	    if (pDRIInfo->wrap.ClipNotify) {
+		pScreen->ClipNotify             = pDRIPriv->wrap.ClipNotify;
+		pDRIPriv->wrap.ClipNotify       = NULL;
+	    }
+	    if (pDRIInfo->wrap.AdjustFrame) {
+		ScrnInfoPtr pScrn               = xf86Screens[pScreen->myNum];
+		pScrn->AdjustFrame              = pDRIPriv->wrap.AdjustFrame;
+		pDRIPriv->wrap.AdjustFrame      = NULL;
+	    }
+	    pDRIPriv->wrapped = FALSE;
+	}
+
+	if (pDRIPriv->drmSIGIOHandlerInstalled) {
+	    if (!drmRemoveSIGIOHandler(pDRIPriv->drmFD)) {
+		DRIDrvMsg(pScreen->myNum, X_ERROR,
+			  "[drm] failed to remove DRM signal handler\n");
+	    }
+	}
+
+        if (pDRIPriv->dummyCtxPriv && pDRIPriv->createDummyCtx) {
+	    DRIDestroyDummyContext(pScreen, pDRIPriv->createDummyCtxPriv);
+	}
+
+	if (!DRIDestroyContextPriv(pDRIPriv->myContextPriv)) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "failed to destroy server context\n");
+	}
+
+				/* Remove tags for reserved contexts */
+	if ((reserved = drmGetReservedContextList(pDRIPriv->drmFD,
+						  &reserved_count))) {
+	    int  i;
+
+	    for (i = 0; i < reserved_count; i++) {
+		DRIDestroyContextPriv(drmGetContextTag(pDRIPriv->drmFD,
+						       reserved[i]));
+	    }
+	    drmFreeReservedContextList(reserved);
+	    DRIDrvMsg(pScreen->myNum, X_INFO,
+		      "[drm] removed %d reserved context%s for kernel\n",
+		      reserved_count, reserved_count > 1 ? "s" : "");
+	}
+
+	/* Make sure signals get unblocked etc. */
+	drmUnlock(pDRIPriv->drmFD, pDRIPriv->myContext);
+	pDRIPriv->lockRefCount = 0;
+	DRIDrvMsg(pScreen->myNum, X_INFO,
+		  "[drm] unmapping %d bytes of SAREA %p at %p\n",
+		  pDRIInfo->SAREASize,
+		  pDRIPriv->hSAREA,
+		  pDRIPriv->pSAREA);
+	if (drmUnmap(pDRIPriv->pSAREA, pDRIInfo->SAREASize)) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "[drm] unable to unmap %d bytes"
+		      " of SAREA %p at %p\n",
+		      pDRIInfo->SAREASize,
+		      pDRIPriv->hSAREA,
+		      pDRIPriv->pSAREA);
+	}
+
+	drmClose(pDRIPriv->drmFD);
+
+	xfree(pDRIPriv);
+	pScreen->devPrivates[DRIScreenPrivIndex].ptr = NULL;
+    }
+}
+
+Bool
+DRIExtensionInit(void)
+{
+    int		    	i;
+    ScreenPtr		pScreen;
+
+    if (DRIScreenPrivIndex < 0) {
+	return FALSE;
+    }
+
+    /* Allocate a window private index with a zero sized private area for
+     * each window, then should a window become a DRI window, we'll hang
+     * a DRIWindowPrivateRec off of this private index.
+     */
+    if ((DRIWindowPrivIndex = AllocateWindowPrivateIndex()) < 0)
+	return FALSE;
+
+    DRIDrawablePrivResType = CreateNewResourceType(DRIDrawablePrivDelete);
+    DRIContextPrivResType = CreateNewResourceType(DRIContextPrivDelete);
+
+    for (i = 0; i < screenInfo.numScreens; i++)
+    {
+	pScreen = screenInfo.screens[i];
+	if (!AllocateWindowPrivate(pScreen, DRIWindowPrivIndex, 0))
+	    return FALSE;
+    }
+
+    RegisterBlockAndWakeupHandlers(DRIBlockHandler, DRIWakeupHandler, NULL);
+
+    return TRUE;
+}
+
+void
+DRIReset(void)
+{
+    /*
+     * This stub routine is called when the X Server recycles, resources
+     * allocated by DRIExtensionInit need to be managed here.
+     *
+     * Currently this routine is a stub because all the interesting resources
+     * are managed via the screen init process.
+     */
+}
+
+Bool
+DRIQueryDirectRenderingCapable(ScreenPtr pScreen, Bool* isCapable)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    if (pDRIPriv)
+	*isCapable = pDRIPriv->directRenderingSupport;
+    else
+	*isCapable = FALSE;
+
+    return TRUE;
+}
+
+Bool
+DRIOpenConnection(ScreenPtr pScreen, drm_handle_t * hSAREA, char **busIdString)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    *hSAREA           = pDRIPriv->hSAREA;
+    *busIdString      = pDRIPriv->pDriverInfo->busIdString;
+
+    return TRUE;
+}
+
+Bool
+DRIAuthConnection(ScreenPtr pScreen, drm_magic_t magic)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    if (drmAuthMagic(pDRIPriv->drmFD, magic)) return FALSE;
+    return TRUE;
+}
+
+Bool
+DRICloseConnection(ScreenPtr pScreen)
+{
+    return TRUE;
+}
+
+Bool
+DRIGetClientDriverName(ScreenPtr pScreen,
+                       int *ddxDriverMajorVersion,
+                       int *ddxDriverMinorVersion,
+                       int *ddxDriverPatchVersion,
+                       char **clientDriverName)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    *ddxDriverMajorVersion = pDRIPriv->pDriverInfo->ddxDriverMajorVersion;
+    *ddxDriverMinorVersion = pDRIPriv->pDriverInfo->ddxDriverMinorVersion;
+    *ddxDriverPatchVersion = pDRIPriv->pDriverInfo->ddxDriverPatchVersion;
+    *clientDriverName      = pDRIPriv->pDriverInfo->clientDriverName;
+
+    return TRUE;
+}
+
+/* DRICreateContextPriv and DRICreateContextPrivFromHandle are helper
+   functions that layer on drmCreateContext and drmAddContextTag.
+
+   DRICreateContextPriv always creates a kernel drm_context_t and then calls
+   DRICreateContextPrivFromHandle to create a DRIContextPriv structure for
+   DRI tracking.  For the SIGIO handler, the drm_context_t is associated with
+   DRIContextPrivPtr.  Any special flags are stored in the DRIContextPriv
+   area and are passed to the kernel (if necessary).
+
+   DRICreateContextPriv returns a pointer to newly allocated
+   DRIContextPriv, and returns the kernel drm_context_t in pHWContext. */
+
+DRIContextPrivPtr
+DRICreateContextPriv(ScreenPtr pScreen,
+		     drm_context_t * pHWContext,
+		     DRIContextFlags flags)
+{
+    DRIScreenPrivPtr  pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    if (drmCreateContext(pDRIPriv->drmFD, pHWContext)) {
+	return NULL;
+    }
+
+    return DRICreateContextPrivFromHandle(pScreen, *pHWContext, flags);
+}
+
+DRIContextPrivPtr
+DRICreateContextPrivFromHandle(ScreenPtr pScreen,
+			       drm_context_t hHWContext,
+			       DRIContextFlags flags)
+{
+    DRIScreenPrivPtr  pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIContextPrivPtr pDRIContextPriv;
+    int 	      contextPrivSize;
+
+    contextPrivSize = sizeof(DRIContextPrivRec) +
+			    pDRIPriv->pDriverInfo->contextSize;
+    if (!(pDRIContextPriv = xcalloc(1, contextPrivSize))) {
+	return NULL;
+    }
+    pDRIContextPriv->pContextStore = (void *)(pDRIContextPriv + 1);
+
+    drmAddContextTag(pDRIPriv->drmFD, hHWContext, pDRIContextPriv);
+
+    pDRIContextPriv->hwContext = hHWContext;
+    pDRIContextPriv->pScreen   = pScreen;
+    pDRIContextPriv->flags     = flags;
+    pDRIContextPriv->valid3D   = FALSE;
+
+    if (flags & DRI_CONTEXT_2DONLY) {
+	if (drmSetContextFlags(pDRIPriv->drmFD,
+			       hHWContext,
+			       DRM_CONTEXT_2DONLY)) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "[drm] failed to set 2D context flag\n");
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return NULL;
+	}
+    }
+    if (flags & DRI_CONTEXT_PRESERVED) {
+	if (drmSetContextFlags(pDRIPriv->drmFD,
+			       hHWContext,
+			       DRM_CONTEXT_PRESERVED)) {
+	    DRIDrvMsg(pScreen->myNum, X_ERROR,
+		      "[drm] failed to set preserved flag\n");
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return NULL;
+	}
+    }
+    return pDRIContextPriv;
+}
+
+Bool
+DRIDestroyContextPriv(DRIContextPrivPtr pDRIContextPriv)
+{
+    DRIScreenPrivPtr pDRIPriv;
+
+    if (!pDRIContextPriv) return TRUE;
+
+    pDRIPriv = DRI_SCREEN_PRIV(pDRIContextPriv->pScreen);
+
+    if (!(pDRIContextPriv->flags & DRI_CONTEXT_RESERVED)) {
+				/* Don't delete reserved contexts from
+                                   kernel area -- the kernel manages its
+                                   reserved contexts itself. */
+	if (drmDestroyContext(pDRIPriv->drmFD, pDRIContextPriv->hwContext))
+	    return FALSE;
+    }
+
+				/* Remove the tag last to prevent a race
+                                   condition where the context has pending
+                                   buffers.  The context can't be re-used
+                                   while in this thread, but buffers can be
+                                   dispatched asynchronously. */
+    drmDelContextTag(pDRIPriv->drmFD, pDRIContextPriv->hwContext);
+    xfree(pDRIContextPriv);
+    return TRUE;
+}
+
+static Bool
+DRICreateDummyContext(ScreenPtr pScreen, Bool needCtxPriv)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    __GLXscreenInfo *pGLXScreen = __glXgetActiveScreen(pScreen->myNum);
+    __GLcontextModes *modes = pGLXScreen->modes;
+    void **pVisualConfigPriv = pGLXScreen->pVisualPriv;
+    DRIContextPrivPtr pDRIContextPriv;
+    void *contextStore;
+    VisualPtr visual;
+    int visNum;
+
+    visual = pScreen->visuals;
+
+    /* Find the X visual that corresponds the the first GLX visual */
+    for (visNum = 0;
+	 visNum < pScreen->numVisuals;
+	 visNum++, visual++) {
+	if (modes->visualID == visual->vid)
+	    break;
+    }
+    if (visNum == pScreen->numVisuals) return FALSE;
+
+    if (!(pDRIContextPriv =
+	  DRICreateContextPriv(pScreen,
+			       &pDRIPriv->pSAREA->dummy_context, 0))) {
+	return FALSE;
+    }
+
+    contextStore = DRIGetContextStore(pDRIContextPriv);
+    if (pDRIPriv->pDriverInfo->CreateContext && needCtxPriv) {
+	if (!pDRIPriv->pDriverInfo->CreateContext(pScreen, visual,
+						  pDRIPriv->pSAREA->dummy_context,
+						  *pVisualConfigPriv,
+						  (DRIContextType)(long)contextStore)) {
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return FALSE;
+	}
+    }
+
+    pDRIPriv->dummyCtxPriv = pDRIContextPriv;
+    return TRUE;
+}
+
+static void
+DRIDestroyDummyContext(ScreenPtr pScreen, Bool hasCtxPriv)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIContextPrivPtr pDRIContextPriv = pDRIPriv->dummyCtxPriv;
+    void *contextStore;
+
+    if (!pDRIContextPriv) return;
+    if (pDRIPriv->pDriverInfo->DestroyContext && hasCtxPriv) {
+	contextStore = DRIGetContextStore(pDRIContextPriv);
+	pDRIPriv->pDriverInfo->DestroyContext(pDRIContextPriv->pScreen,
+					      pDRIContextPriv->hwContext,
+					      (DRIContextType)(long)contextStore);
+    }
+
+    DRIDestroyContextPriv(pDRIPriv->dummyCtxPriv);
+    pDRIPriv->dummyCtxPriv = NULL;
+}
+
+Bool
+DRICreateContext(ScreenPtr pScreen, VisualPtr visual,
+                 XID context, drm_context_t * pHWContext)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    __GLXscreenInfo *pGLXScreen = __glXgetActiveScreen(pScreen->myNum);
+    __GLcontextModes *modes = pGLXScreen->modes;
+    void **pVisualConfigPriv = pGLXScreen->pVisualPriv;
+    DRIContextPrivPtr pDRIContextPriv;
+    void *contextStore;
+
+    if (pDRIPriv->createDummyCtx && !pDRIPriv->dummyCtxPriv) {
+        if (!DRICreateDummyContext(pScreen, pDRIPriv->createDummyCtxPriv)) {
+	    DRIDrvMsg(pScreen->myNum, X_INFO,
+		      "[drm] Could not create dummy context\n");
+	    return FALSE;
+	}
+    }
+
+    /* Find the GLX visual associated with the one requested */
+    for (modes = pGLXScreen->modes; modes != NULL; modes = modes->next) {
+	if (modes->visualID == visual->vid)
+	    break;
+	pVisualConfigPriv++;
+    }
+
+    if (modes == NULL) {
+	/* No matching GLX visual found */
+	return FALSE;
+    }
+
+    if (!(pDRIContextPriv = DRICreateContextPriv(pScreen, pHWContext, 0))) {
+	return FALSE;
+    }
+
+    contextStore = DRIGetContextStore(pDRIContextPriv);
+    if (pDRIPriv->pDriverInfo->CreateContext) {
+	if (!((*pDRIPriv->pDriverInfo->CreateContext)(pScreen, visual,
+		*pHWContext, *pVisualConfigPriv,
+		(DRIContextType)(long)contextStore))) {
+	    DRIDestroyContextPriv(pDRIContextPriv);
+	    return FALSE;
+	}
+    }
+
+    /* track this in case the client dies before cleanup */
+    AddResource(context, DRIContextPrivResType, (pointer)pDRIContextPriv);
+
+    return TRUE;
+}
+
+Bool
+DRIDestroyContext(ScreenPtr pScreen, XID context)
+{
+    FreeResourceByType(context, DRIContextPrivResType, FALSE);
+
+    return TRUE;
+}
+
+/* DRIContextPrivDelete is called by the resource manager. */
+Bool
+DRIContextPrivDelete(pointer pResource, XID id)
+{
+    DRIContextPrivPtr pDRIContextPriv = (DRIContextPrivPtr)pResource;
+    DRIScreenPrivPtr pDRIPriv;
+    void *contextStore;
+
+    pDRIPriv = DRI_SCREEN_PRIV(pDRIContextPriv->pScreen);
+    if (pDRIPriv->pDriverInfo->DestroyContext) {
+      contextStore = DRIGetContextStore(pDRIContextPriv);
+      pDRIPriv->pDriverInfo->DestroyContext(pDRIContextPriv->pScreen,
+					    pDRIContextPriv->hwContext,
+					    (DRIContextType)(long)contextStore);
+    }
+    return DRIDestroyContextPriv(pDRIContextPriv);
+}
+
+
+/* This walks the drawable timestamp array and invalidates all of them
+ * in the case of transition from private to shared backbuffers.  It's
+ * not necessary for correctness, because DRIClipNotify gets called in
+ * time to prevent any conflict, but the transition from
+ * shared->private is sometimes missed if we don't do this.
+ */
+static void
+DRIClipNotifyAllDrawables(ScreenPtr pScreen)
+{
+   int i;
+   DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+   for( i=0; i < pDRIPriv->pDriverInfo->maxDrawableTableEntry; i++) {
+      pDRIPriv->pSAREA->drawableTable[i].stamp = DRIDrawableValidationStamp++;
+   }
+}
+
+
+static void
+DRITransitionToSharedBuffers(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIInfoPtr pDRIInfo = pDRIPriv->pDriverInfo;
+
+    DRIClipNotifyAllDrawables( pScreen );
+
+    if (pDRIInfo->TransitionSingleToMulti3D)
+	pDRIInfo->TransitionSingleToMulti3D( pScreen );
+}
+
+
+static void
+DRITransitionToPrivateBuffers(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIInfoPtr pDRIInfo = pDRIPriv->pDriverInfo;
+
+    DRIClipNotifyAllDrawables( pScreen );
+
+    if (pDRIInfo->TransitionMultiToSingle3D)
+	pDRIInfo->TransitionMultiToSingle3D( pScreen );
+}
+
+
+static void
+DRITransitionTo3d(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIInfoPtr pDRIInfo = pDRIPriv->pDriverInfo;
+
+    DRIClipNotifyAllDrawables( pScreen );
+
+    if (pDRIInfo->TransitionTo3d)
+	pDRIInfo->TransitionTo3d( pScreen );
+}
+
+static void
+DRITransitionTo2d(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIInfoPtr pDRIInfo = pDRIPriv->pDriverInfo;
+
+    DRIClipNotifyAllDrawables( pScreen );
+
+    if (pDRIInfo->TransitionTo2d)
+	pDRIInfo->TransitionTo2d( pScreen );
+}
+
+
+Bool
+DRICreateDrawable(ScreenPtr pScreen, Drawable id,
+                  DrawablePtr pDrawable, drm_drawable_t * hHWDrawable)
+{
+    DRIScreenPrivPtr	pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIDrawablePrivPtr	pDRIDrawablePriv;
+    WindowPtr		pWin;
+
+    if (pDrawable->type == DRAWABLE_WINDOW) {
+	pWin = (WindowPtr)pDrawable;
+	if ((pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin))) {
+	    pDRIDrawablePriv->refCount++;
+	}
+	else {
+	    /* allocate a DRI Window Private record */
+	    if (!(pDRIDrawablePriv = xalloc(sizeof(DRIDrawablePrivRec)))) {
+		return FALSE;
+	    }
+
+	    /* Only create a drm_drawable_t once */
+	    if (drmCreateDrawable(pDRIPriv->drmFD, hHWDrawable)) {
+		xfree(pDRIDrawablePriv);
+		return FALSE;
+	    }
+
+	    /* add it to the list of DRI drawables for this screen */
+	    pDRIDrawablePriv->hwDrawable = *hHWDrawable;
+	    pDRIDrawablePriv->pScreen = pScreen;
+	    pDRIDrawablePriv->refCount = 1;
+	    pDRIDrawablePriv->drawableIndex = -1;
+
+	    /* save private off of preallocated index */
+	    pWin->devPrivates[DRIWindowPrivIndex].ptr =
+						(pointer)pDRIDrawablePriv;
+
+	    switch (++pDRIPriv->nrWindows) {
+	    case 1:
+	       DRITransitionTo3d( pScreen );
+	       break;
+	    case 2:
+	       DRITransitionToSharedBuffers( pScreen );
+	       break;
+	    default:
+	       break;
+	    }
+
+	    /* track this in case this window is destroyed */
+	    AddResource(id, DRIDrawablePrivResType, (pointer)pWin);
+	}
+    }
+    else { /* pixmap (or for GLX 1.3, a PBuffer) */
+	/* NOT_DONE */
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+Bool
+DRIDestroyDrawable(ScreenPtr pScreen, Drawable id, DrawablePtr pDrawable)
+{
+    DRIDrawablePrivPtr	pDRIDrawablePriv;
+    WindowPtr		pWin;
+
+
+    if (pDrawable->type == DRAWABLE_WINDOW) {
+	pWin = (WindowPtr)pDrawable;
+	pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin);
+	pDRIDrawablePriv->refCount--;
+	if (pDRIDrawablePriv->refCount <= 0) {
+	    /* This calls back DRIDrawablePrivDelete which frees private area */
+	    FreeResourceByType(id, DRIDrawablePrivResType, FALSE);
+	}
+    }
+    else { /* pixmap (or for GLX 1.3, a PBuffer) */
+	/* NOT_DONE */
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+Bool
+DRIDrawablePrivDelete(pointer pResource, XID id)
+{
+    DrawablePtr		pDrawable = (DrawablePtr)pResource;
+    DRIScreenPrivPtr	pDRIPriv = DRI_SCREEN_PRIV(pDrawable->pScreen);
+    DRIDrawablePrivPtr	pDRIDrawablePriv;
+    WindowPtr		pWin;
+
+    if (pDrawable->type == DRAWABLE_WINDOW) {
+	pWin = (WindowPtr)pDrawable;
+	pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin);
+
+	if (pDRIDrawablePriv->drawableIndex != -1) {
+	    /* bump stamp to force outstanding 3D requests to resync */
+	    pDRIPriv->pSAREA->drawableTable[pDRIDrawablePriv->drawableIndex].stamp
+		= DRIDrawableValidationStamp++;
+
+	    /* release drawable table entry */
+	    pDRIPriv->DRIDrawables[pDRIDrawablePriv->drawableIndex] = NULL;
+	}
+
+	if (drmDestroyDrawable(pDRIPriv->drmFD,
+			       pDRIDrawablePriv->hwDrawable)) {
+	    return FALSE;
+	}
+	xfree(pDRIDrawablePriv);
+	pWin->devPrivates[DRIWindowPrivIndex].ptr = NULL;
+
+	switch (--pDRIPriv->nrWindows) {
+	case 0:
+	   DRITransitionTo2d( pDrawable->pScreen );
+	   break;
+	case 1:
+	   DRITransitionToPrivateBuffers( pDrawable->pScreen );
+	   break;
+	default:
+	   break;
+	}
+    }
+    else { /* pixmap (or for GLX 1.3, a PBuffer) */
+	/* NOT_DONE */
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+Bool
+DRIGetDrawableInfo(ScreenPtr pScreen,
+                   DrawablePtr pDrawable,
+                   unsigned int* index,
+                   unsigned int* stamp,
+                   int* X,
+                   int* Y,
+                   int* W,
+                   int* H,
+                   int* numClipRects,
+                   drm_clip_rect_t ** pClipRects,
+                   int* backX,
+                   int* backY,
+                   int* numBackClipRects,
+                   drm_clip_rect_t ** pBackClipRects)
+{
+    DRIScreenPrivPtr    pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIDrawablePrivPtr	pDRIDrawablePriv, pOldDrawPriv;
+    WindowPtr		pWin, pOldWin;
+    int			i;
+
+    printf("maxDrawableTableEntry = %d\n", pDRIPriv->pDriverInfo->maxDrawableTableEntry);
+
+    if (pDrawable->type == DRAWABLE_WINDOW) {
+	pWin = (WindowPtr)pDrawable;
+	if ((pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin))) {
+
+	    /* Manage drawable table */
+	    if (pDRIDrawablePriv->drawableIndex == -1) { /* load SAREA table */
+
+		/* Search table for empty entry */
+		i = 0;
+		while (i < pDRIPriv->pDriverInfo->maxDrawableTableEntry) {
+		    if (!(pDRIPriv->DRIDrawables[i])) {
+			pDRIPriv->DRIDrawables[i] = pDrawable;
+			pDRIDrawablePriv->drawableIndex = i;
+			pDRIPriv->pSAREA->drawableTable[i].stamp =
+					    DRIDrawableValidationStamp++;
+			break;
+		    }
+		    i++;
+		}
+
+		/* Search table for oldest entry */
+		if (i == pDRIPriv->pDriverInfo->maxDrawableTableEntry) {
+                    unsigned int oldestStamp = ~0;
+                    int oldestIndex = 0;
+		    i = pDRIPriv->pDriverInfo->maxDrawableTableEntry;
+		    while (i--) {
+			if (pDRIPriv->pSAREA->drawableTable[i].stamp <
+								oldestStamp) {
+			    oldestIndex = i;
+			    oldestStamp =
+				pDRIPriv->pSAREA->drawableTable[i].stamp;
+			}
+		    }
+		    pDRIDrawablePriv->drawableIndex = oldestIndex;
+
+		    /* release oldest drawable table entry */
+		    pOldWin = (WindowPtr)pDRIPriv->DRIDrawables[oldestIndex];
+		    pOldDrawPriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pOldWin);
+		    pOldDrawPriv->drawableIndex = -1;
+
+		    /* claim drawable table entry */
+		    pDRIPriv->DRIDrawables[oldestIndex] = pDrawable;
+
+		    /* validate SAREA entry */
+		    pDRIPriv->pSAREA->drawableTable[oldestIndex].stamp =
+					DRIDrawableValidationStamp++;
+
+		    /* check for stamp wrap around */
+		    if (oldestStamp > DRIDrawableValidationStamp) {
+
+			/* walk SAREA table and invalidate all drawables */
+			for( i=0;
+                             i < pDRIPriv->pDriverInfo->maxDrawableTableEntry;
+                             i++) {
+				pDRIPriv->pSAREA->drawableTable[i].stamp =
+					DRIDrawableValidationStamp++;
+			}
+		    }
+		}
+
+		/* If the driver wants to be notified when the index is
+		 * set for a drawable, let it know now.
+		 */
+		if (pDRIPriv->pDriverInfo->SetDrawableIndex)
+			pDRIPriv->pDriverInfo->SetDrawableIndex(pWin,
+				pDRIDrawablePriv->drawableIndex);
+
+		/* reinit drawable ID if window is visible */
+		if ((pWin->viewable) &&
+		    (pDRIPriv->pDriverInfo->bufferRequests != DRI_NO_WINDOWS))
+		{
+		    (*pDRIPriv->pDriverInfo->InitBuffers)(pWin,
+			    &pWin->clipList, pDRIDrawablePriv->drawableIndex);
+		}
+	    }
+
+	    *index = pDRIDrawablePriv->drawableIndex;
+	    *stamp = pDRIPriv->pSAREA->drawableTable[*index].stamp;
+	    *X = (int)(pWin->drawable.x);
+	    *Y = (int)(pWin->drawable.y);
+#if 0
+	    *W = (int)(pWin->winSize.extents.x2 - pWin->winSize.extents.x1);
+	    *H = (int)(pWin->winSize.extents.y2 - pWin->winSize.extents.y1);
+#endif
+	    *W = (int)(pWin->drawable.width);
+	    *H = (int)(pWin->drawable.height);
+	    *numClipRects = REGION_NUM_RECTS(&pWin->clipList);
+	    *pClipRects = (drm_clip_rect_t *)REGION_RECTS(&pWin->clipList);
+
+	    if (!*numClipRects && pDRIPriv->fullscreen) {
+				/* use fake full-screen clip rect */
+		pDRIPriv->fullscreen_rect.x1 = *X;
+		pDRIPriv->fullscreen_rect.y1 = *Y;
+		pDRIPriv->fullscreen_rect.x2 = *X + *W;
+		pDRIPriv->fullscreen_rect.y2 = *Y + *H;
+
+		*numClipRects = 1;
+		*pClipRects   = &pDRIPriv->fullscreen_rect;
+	    }
+
+	    *backX = *X;
+	    *backY = *Y;
+
+	    if (pDRIPriv->nrWindows == 1 && *numClipRects) {
+	       /* Use a single cliprect. */
+
+	       int x0 = *X;
+	       int y0 = *Y;
+	       int x1 = x0 + *W;
+	       int y1 = y0 + *H;
+
+	       if (x0 < 0) x0 = 0;
+	       if (y0 < 0) y0 = 0;
+	       if (x1 > pScreen->width) x1 = pScreen->width;
+	       if (y1 > pScreen->height) y1 = pScreen->height;
+
+	       pDRIPriv->private_buffer_rect.x1 = x0;
+	       pDRIPriv->private_buffer_rect.y1 = y0;
+	       pDRIPriv->private_buffer_rect.x2 = x1;
+	       pDRIPriv->private_buffer_rect.y2 = y1;
+
+	       *numBackClipRects = 1;
+	       *pBackClipRects = &(pDRIPriv->private_buffer_rect);
+	    } else {
+	       /* Use the frontbuffer cliprects for back buffers.  */
+	       *numBackClipRects = 0;
+	       *pBackClipRects = 0;
+	    }
+	}
+	else {
+	    /* Not a DRIDrawable */
+	    return FALSE;
+	}
+    }
+    else { /* pixmap (or for GLX 1.3, a PBuffer) */
+	/* NOT_DONE */
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+Bool
+DRIGetDeviceInfo(ScreenPtr pScreen,
+                 drm_handle_t * hFrameBuffer,
+                 int* fbOrigin,
+                 int* fbSize,
+                 int* fbStride,
+                 int* devPrivateSize,
+                 void** pDevPrivate)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    *hFrameBuffer = pDRIPriv->hFrameBuffer;
+    *fbOrigin = 0;
+    *fbSize = pDRIPriv->pDriverInfo->frameBufferSize;
+    *fbStride = pDRIPriv->pDriverInfo->frameBufferStride;
+    *devPrivateSize = pDRIPriv->pDriverInfo->devPrivateSize;
+    *pDevPrivate = pDRIPriv->pDriverInfo->devPrivate;
+
+    return TRUE;
+}
+
+DRIInfoPtr
+DRICreateInfoRec(void)
+{
+    DRIInfoPtr inforec = (DRIInfoPtr)xcalloc(1, sizeof(DRIInfoRec));
+    if (!inforec) return NULL;
+
+    /* Initialize defaults */
+    inforec->busIdString = NULL;
+
+    /* Wrapped function defaults */
+    inforec->wrap.WakeupHandler         = DRIDoWakeupHandler;
+    inforec->wrap.BlockHandler          = DRIDoBlockHandler;
+    inforec->wrap.WindowExposures       = DRIWindowExposures;
+    inforec->wrap.CopyWindow            = DRICopyWindow;
+    inforec->wrap.ValidateTree          = DRIValidateTree;
+    inforec->wrap.PostValidateTree      = DRIPostValidateTree;
+    inforec->wrap.ClipNotify            = DRIClipNotify;
+    inforec->wrap.AdjustFrame           = DRIAdjustFrame;
+
+    inforec->TransitionTo2d = 0;
+    inforec->TransitionTo3d = 0;
+    inforec->SetDrawableIndex = 0;
+
+    return inforec;
+}
+
+void
+DRIDestroyInfoRec(DRIInfoPtr DRIInfo)
+{
+    if (DRIInfo->busIdString) xfree(DRIInfo->busIdString);
+    xfree((char*)DRIInfo);
+}
+
+
+void
+DRIWakeupHandler(pointer wakeupData, int result, pointer pReadmask)
+{
+    int i;
+
+    for (i = 0; i < screenInfo.numScreens; i++) {
+	ScreenPtr        pScreen  = screenInfo.screens[i];
+	DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+	if (pDRIPriv &&
+	    pDRIPriv->pDriverInfo->wrap.WakeupHandler)
+	    (*pDRIPriv->pDriverInfo->wrap.WakeupHandler)(i, wakeupData,
+							 result, pReadmask);
+    }
+}
+
+void
+DRIBlockHandler(pointer blockData, OSTimePtr pTimeout, pointer pReadmask)
+{
+    int i;
+
+    for (i = 0; i < screenInfo.numScreens; i++) {
+	ScreenPtr        pScreen  = screenInfo.screens[i];
+	DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+	if (pDRIPriv &&
+	    pDRIPriv->pDriverInfo->wrap.BlockHandler)
+	    (*pDRIPriv->pDriverInfo->wrap.BlockHandler)(i, blockData,
+							pTimeout, pReadmask);
+    }
+}
+
+void
+DRIDoWakeupHandler(int screenNum, pointer wakeupData,
+                   unsigned long result, pointer pReadmask)
+{
+    ScreenPtr pScreen = screenInfo.screens[screenNum];
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    DRILock(pScreen, 0);
+    if (pDRIPriv->pDriverInfo->driverSwapMethod == DRI_HIDE_X_CONTEXT) {
+	/* hide X context by swapping 2D component here */
+	(*pDRIPriv->pDriverInfo->SwapContext)(pScreen,
+					      DRI_3D_SYNC,
+					      DRI_2D_CONTEXT,
+					      pDRIPriv->partial3DContextStore,
+					      DRI_2D_CONTEXT,
+					      pDRIPriv->hiddenContextStore);
+    }
+}
+
+void
+DRIDoBlockHandler(int screenNum, pointer blockData,
+                  pointer pTimeout, pointer pReadmask)
+{
+    ScreenPtr pScreen = screenInfo.screens[screenNum];
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    if (pDRIPriv->pDriverInfo->driverSwapMethod == DRI_HIDE_X_CONTEXT) {
+	/* hide X context by swapping 2D component here */
+	(*pDRIPriv->pDriverInfo->SwapContext)(pScreen,
+					      DRI_2D_SYNC,
+					      DRI_NO_CONTEXT,
+					      NULL,
+					      DRI_2D_CONTEXT,
+					      pDRIPriv->partial3DContextStore);
+    }
+    DRIUnlock(pScreen);
+}
+
+void
+DRISwapContext(int drmFD, void *oldctx, void *newctx)
+{
+    DRIContextPrivPtr oldContext      = (DRIContextPrivPtr)oldctx;
+    DRIContextPrivPtr newContext      = (DRIContextPrivPtr)newctx;
+    ScreenPtr         pScreen         = newContext->pScreen;
+    DRIScreenPrivPtr  pDRIPriv        = DRI_SCREEN_PRIV(pScreen);
+    void*             oldContextStore = NULL;
+    DRIContextType    oldContextType;
+    void*             newContextStore = NULL;
+    DRIContextType    newContextType;
+    DRISyncType       syncType;
+#ifdef DEBUG
+    static int        count = 0;
+#endif
+
+    if (!newContext) {
+	DRIDrvMsg(pScreen->myNum, X_ERROR,
+		  "[DRI] Context Switch Error: oldContext=%x, newContext=%x\n",
+		  oldContext, newContext);
+	return;
+    }
+
+#ifdef DEBUG
+    /* usefull for debugging, just print out after n context switches */
+    if (!count || !(count % 1)) {
+	DRIDrvMsg(pScreen->myNum, X_INFO,
+		  "[DRI] Context switch %5d from %p/0x%08x (%d)\n",
+		  count,
+		  oldContext,
+		  oldContext ? oldContext->flags : 0,
+		  oldContext ? oldContext->hwContext : -1);
+	DRIDrvMsg(pScreen->myNum, X_INFO,
+		  "[DRI] Context switch %5d to   %p/0x%08x (%d)\n",
+		  count,
+		  newContext,
+		  newContext ? newContext->flags : 0,
+		  newContext ? newContext->hwContext : -1);
+    }
+    ++count;
+#endif
+
+    if (!pDRIPriv->pDriverInfo->SwapContext) {
+	DRIDrvMsg(pScreen->myNum, X_ERROR,
+		  "[DRI] DDX driver missing context swap call back\n");
+	return;
+    }
+
+    if (pDRIPriv->pDriverInfo->driverSwapMethod == DRI_HIDE_X_CONTEXT) {
+
+        /* only 3D contexts are swapped in this case */
+	if (oldContext) {
+	    oldContextStore     = DRIGetContextStore(oldContext);
+	    oldContext->valid3D = TRUE;
+	    oldContextType      = DRI_3D_CONTEXT;
+	} else {
+	    oldContextType      = DRI_NO_CONTEXT;
+	}
+	newContextStore = DRIGetContextStore(newContext);
+	if ((newContext->valid3D) &&
+	  (newContext->hwContext != pDRIPriv->myContext)) {
+	    newContextType = DRI_3D_CONTEXT;
+	}
+	else {
+	    newContextType = DRI_2D_CONTEXT;
+	}
+	syncType = DRI_3D_SYNC;
+    }
+    else /* default: driverSwapMethod == DRI_SERVER_SWAP */ {
+
+        /* optimize 2D context swaps */
+
+	if (newContext->flags & DRI_CONTEXT_2DONLY) {
+	    /* go from 3D context to 2D context and only save 2D
+             * subset of 3D state
+             */
+	    oldContextStore = DRIGetContextStore(oldContext);
+	    oldContextType = DRI_2D_CONTEXT;
+	    newContextStore = DRIGetContextStore(newContext);
+	    newContextType = DRI_2D_CONTEXT;
+	    syncType = DRI_3D_SYNC;
+	    pDRIPriv->lastPartial3DContext = oldContext;
+	}
+	else if (oldContext->flags & DRI_CONTEXT_2DONLY) {
+	    if (pDRIPriv->lastPartial3DContext == newContext) {
+		/* go from 2D context back to previous 3D context and
+		 * only restore 2D subset of previous 3D state
+		 */
+		oldContextStore = DRIGetContextStore(oldContext);
+		oldContextType = DRI_2D_CONTEXT;
+		newContextStore = DRIGetContextStore(newContext);
+		newContextType = DRI_2D_CONTEXT;
+		syncType = DRI_2D_SYNC;
+	    }
+	    else {
+		/* go from 2D context to a different 3D context */
+
+		/* call DDX driver to do partial restore */
+		oldContextStore = DRIGetContextStore(oldContext);
+		newContextStore =
+			DRIGetContextStore(pDRIPriv->lastPartial3DContext);
+		(*pDRIPriv->pDriverInfo->SwapContext)(pScreen,
+						      DRI_2D_SYNC,
+						      DRI_2D_CONTEXT,
+						      oldContextStore,
+						      DRI_2D_CONTEXT,
+						      newContextStore);
+
+		/* now setup for a complete 3D swap */
+		oldContextStore = newContextStore;
+		oldContext->valid3D = TRUE;
+		oldContextType = DRI_3D_CONTEXT;
+		newContextStore = DRIGetContextStore(newContext);
+		if ((newContext->valid3D) &&
+		  (newContext->hwContext != pDRIPriv->myContext)) {
+		    newContextType = DRI_3D_CONTEXT;
+		}
+		else {
+		    newContextType = DRI_2D_CONTEXT;
+		}
+		syncType = DRI_NO_SYNC;
+	    }
+	}
+	else {
+	    /* now setup for a complete 3D swap */
+	    oldContextStore = newContextStore;
+	    oldContext->valid3D = TRUE;
+	    oldContextType = DRI_3D_CONTEXT;
+	    newContextStore = DRIGetContextStore(newContext);
+	    if ((newContext->valid3D) &&
+	      (newContext->hwContext != pDRIPriv->myContext)) {
+		newContextType = DRI_3D_CONTEXT;
+	    }
+	    else {
+		newContextType = DRI_2D_CONTEXT;
+	    }
+	    syncType = DRI_3D_SYNC;
+	}
+    }
+
+    /* call DDX driver to perform the swap */
+    (*pDRIPriv->pDriverInfo->SwapContext)(pScreen,
+					  syncType,
+					  oldContextType,
+					  oldContextStore,
+					  newContextType,
+					  newContextStore);
+}
+
+void* 
+DRIGetContextStore(DRIContextPrivPtr context)
+{
+    return((void *)context->pContextStore);
+}
+
+void
+DRIWindowExposures(WindowPtr pWin, RegionPtr prgn, RegionPtr bsreg)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIDrawablePrivPtr pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin);
+
+    if(pDRIDrawablePriv) {
+         (*pDRIPriv->pDriverInfo->InitBuffers)(pWin, prgn,
+                                               pDRIDrawablePriv->drawableIndex);
+    }
+
+    /* call lower wrapped functions */
+    if (pDRIPriv && pDRIPriv->wrap.WindowExposures) {
+
+	/* unwrap */
+	pScreen->WindowExposures = pDRIPriv->wrap.WindowExposures;
+
+	/* call lower layers */
+	(*pScreen->WindowExposures)(pWin, prgn, bsreg);
+
+	/* rewrap */
+	pDRIPriv->wrap.WindowExposures = pScreen->WindowExposures;
+	pScreen->WindowExposures = DRIWindowExposures;
+    }
+}
+
+
+static int
+DRITreeTraversal(WindowPtr pWin, pointer data)
+{
+    DRIDrawablePrivPtr pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin);
+
+    if(pDRIDrawablePriv) {
+        ScreenPtr pScreen = pWin->drawable.pScreen;
+        DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+        RegionPtr reg = (RegionPtr)data;
+
+        REGION_UNION(pScreen, reg, reg, &(pWin->clipList));
+
+        if(pDRIPriv->nrWindows == 1)
+	   return WT_STOPWALKING;
+    }
+    return WT_WALKCHILDREN;
+}
+
+void
+DRICopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    if(!pDRIPriv) return;
+
+    if(pDRIPriv->nrWindows > 0) {
+       RegionRec reg;
+
+       REGION_NULL(pScreen, &reg);
+       TraverseTree(pWin, DRITreeTraversal, (pointer)(&reg));
+
+       if(REGION_NOTEMPTY(pScreen, &reg)) {
+           REGION_TRANSLATE(pScreen, &reg, ptOldOrg.x - pWin->drawable.x,  
+                                        ptOldOrg.y - pWin->drawable.y);
+           REGION_INTERSECT(pScreen, &reg, &reg, prgnSrc);
+
+           /* The MoveBuffers interface is not ideal */
+           (*pDRIPriv->pDriverInfo->MoveBuffers)(pWin, ptOldOrg, &reg,
+				pDRIPriv->pDriverInfo->ddxDrawableTableEntry);
+       }
+
+       REGION_UNINIT(pScreen, &reg);
+    }
+
+    /* call lower wrapped functions */
+    if(pDRIPriv->wrap.CopyWindow) {
+	/* unwrap */
+	pScreen->CopyWindow = pDRIPriv->wrap.CopyWindow;
+
+	/* call lower layers */
+	(*pScreen->CopyWindow)(pWin, ptOldOrg, prgnSrc);
+
+	/* rewrap */
+	pDRIPriv->wrap.CopyWindow = pScreen->CopyWindow;
+	pScreen->CopyWindow = DRICopyWindow;
+    }
+}
+
+static void
+DRIGetSecs(long *secs, long *usecs)
+{
+#ifdef XFree86LOADER
+    getsecs(secs,usecs);
+#else
+    struct timeval tv;
+
+    gettimeofday(&tv, NULL);
+
+    *secs  = tv.tv_sec;
+    *usecs = tv.tv_usec;
+#endif
+}
+
+static unsigned long
+DRIComputeMilliSeconds(unsigned long s_secs, unsigned long s_usecs,
+		       unsigned long f_secs, unsigned long f_usecs)
+{
+    if (f_usecs < s_usecs) {
+	--f_secs;
+	f_usecs += 1000000;
+    }
+    return (f_secs - s_secs) * 1000 + (f_usecs - s_usecs) / 1000;
+}
+
+static void
+DRISpinLockTimeout(drmLock *lock, int val, unsigned long timeout /* in mS */)
+{
+    int  count = 10000;
+#if !defined(__alpha__) && !defined(__powerpc__)
+    char ret;
+#else
+    int ret;
+#endif
+    long s_secs, s_usecs;
+    long f_secs, f_usecs;
+    long msecs;
+    long prev  = 0;
+
+    DRIGetSecs(&s_secs, &s_usecs);
+
+    do {
+	DRM_SPINLOCK_COUNT(lock, val, count, ret);
+	if (!ret) return;	/* Got lock */
+	DRIGetSecs(&f_secs, &f_usecs);
+	msecs = DRIComputeMilliSeconds(s_secs, s_usecs, f_secs, f_usecs);
+	if (msecs - prev < 250) count *= 2; /* Not more than 0.5S */
+    } while (msecs < timeout);
+
+				/* Didn't get lock, so take it.  The worst
+                                   that can happen is that there is some
+                                   garbage written to the wrong part of the
+                                   framebuffer that a refresh will repair.
+                                   That's undesirable, but better than
+                                   locking the server.  This should be a
+                                   very rare event. */
+    DRM_SPINLOCK_TAKE(lock, val);
+}
+
+static void
+DRILockTree(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    if(!pDRIPriv) return;
+
+    /* Restore the last known 3D context if the X context is hidden */
+    if (pDRIPriv->pDriverInfo->driverSwapMethod == DRI_HIDE_X_CONTEXT) {
+	(*pDRIPriv->pDriverInfo->SwapContext)(pScreen,
+					      DRI_2D_SYNC,
+					      DRI_NO_CONTEXT,
+					      NULL,
+					      DRI_2D_CONTEXT,
+					      pDRIPriv->partial3DContextStore);
+    }
+
+    /* Call kernel to release lock */
+    DRIUnlock(pScreen);
+
+    /* Grab drawable spin lock: a time out between 10 and 30 seconds is
+       appropriate, since this should never time out except in the case of
+       client death while the lock is being held.  The timeout must be
+       greater than any reasonable rendering time. */
+    DRISpinLockTimeout(&pDRIPriv->pSAREA->drawable_lock, 1, 10000); /*10 secs*/
+
+    /* Call kernel flush outstanding buffers and relock */
+    DRILock(pScreen, DRM_LOCK_QUIESCENT|DRM_LOCK_FLUSH_ALL);
+
+    /* Switch back to our 2D context if the X context is hidden */
+    if (pDRIPriv->pDriverInfo->driverSwapMethod == DRI_HIDE_X_CONTEXT) {
+	/* hide X context by swapping 2D component here */
+	(*pDRIPriv->pDriverInfo->SwapContext)(pScreen,
+					      DRI_3D_SYNC,
+					      DRI_2D_CONTEXT,
+					      pDRIPriv->partial3DContextStore,
+					      DRI_2D_CONTEXT,
+					      pDRIPriv->hiddenContextStore);
+    }
+}
+
+/* It appears that somebody is relying on the lock being set even 
+   if we aren't touching 3D windows */ 
+
+#define DRI_BROKEN
+
+static Bool DRIWindowsTouched = FALSE;
+
+int
+DRIValidateTree(WindowPtr pParent, WindowPtr pChild, VTKind kind)
+{
+    ScreenPtr pScreen = pParent->drawable.pScreen;
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    int returnValue = 1; /* always return 1, not checked by dix/window.c */
+
+    if(!pDRIPriv) return returnValue;
+
+    DRIWindowsTouched = FALSE;
+
+#ifdef DRI_BROKEN
+    if(!DRIWindowsTouched) {
+        DRILockTree(pScreen);
+        DRIWindowsTouched = TRUE;
+    }
+#endif
+
+    /* call lower wrapped functions */
+    if(pDRIPriv->wrap.ValidateTree) {
+	/* unwrap */
+	pScreen->ValidateTree = pDRIPriv->wrap.ValidateTree;
+
+	/* call lower layers */
+	returnValue = (*pScreen->ValidateTree)(pParent, pChild, kind);
+
+	/* rewrap */
+	pDRIPriv->wrap.ValidateTree = pScreen->ValidateTree;
+	pScreen->ValidateTree = DRIValidateTree;
+    }
+
+    return returnValue;
+}
+
+void
+DRIPostValidateTree(WindowPtr pParent, WindowPtr pChild, VTKind kind)
+{
+    ScreenPtr pScreen;
+    DRIScreenPrivPtr pDRIPriv;
+
+    if (pParent) {
+	pScreen = pParent->drawable.pScreen;
+    } else {
+	pScreen = pChild->drawable.pScreen;
+    }
+    if(!(pDRIPriv = DRI_SCREEN_PRIV(pScreen))) return;
+
+    if (pDRIPriv->wrap.PostValidateTree) {
+	/* unwrap */
+	pScreen->PostValidateTree = pDRIPriv->wrap.PostValidateTree;
+
+	/* call lower layers */
+	(*pScreen->PostValidateTree)(pParent, pChild, kind);
+
+	/* rewrap */
+	pDRIPriv->wrap.PostValidateTree = pScreen->PostValidateTree;
+	pScreen->PostValidateTree = DRIPostValidateTree;
+    }
+
+    if (DRIWindowsTouched) {
+	/* Release spin lock */
+	DRM_SPINUNLOCK(&pDRIPriv->pSAREA->drawable_lock, 1);
+        DRIWindowsTouched = FALSE;
+    }
+}
+
+void
+DRIClipNotify(WindowPtr pWin, int dx, int dy)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIDrawablePrivPtr	pDRIDrawablePriv;
+
+    if(!pDRIPriv) return;
+
+    if ((pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin))) {
+
+#ifndef DRI_BROKEN
+        if(!DRIWindowsTouched) {
+            DRILockTree(pScreen);
+            DRIWindowsTouched = TRUE;
+        }
+#endif
+
+	pDRIPriv->pSAREA->drawableTable[pDRIDrawablePriv->drawableIndex].stamp
+	    = DRIDrawableValidationStamp++;
+    }
+
+    /* call lower wrapped functions */
+    if(pDRIPriv->wrap.ClipNotify) {
+
+	/* unwrap */
+        pScreen->ClipNotify = pDRIPriv->wrap.ClipNotify;
+
+	/* call lower layers */
+        (*pScreen->ClipNotify)(pWin, dx, dy);
+
+	/* rewrap */
+        pDRIPriv->wrap.ClipNotify = pScreen->ClipNotify;
+        pScreen->ClipNotify = DRIClipNotify;
+    }
+}
+
+CARD32
+DRIGetDrawableIndex(WindowPtr pWin)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIDrawablePrivPtr pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin);
+    CARD32 index;
+
+    if (pDRIDrawablePriv) {
+	index = pDRIDrawablePriv->drawableIndex;
+    }
+    else {
+	index = pDRIPriv->pDriverInfo->ddxDrawableTableEntry;
+    }
+
+    return index;
+}
+
+unsigned int
+DRIGetDrawableStamp(ScreenPtr pScreen, CARD32 drawable_index)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    return pDRIPriv->pSAREA->drawableTable[drawable_index].stamp;
+}
+
+
+void
+DRIPrintDrawableLock(ScreenPtr pScreen, char *msg)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+
+    ErrorF("%s: %d\n", msg,  pDRIPriv->pSAREA->drawable_lock.lock);
+}
+
+void
+DRILock(ScreenPtr pScreen, int flags)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    if(!pDRIPriv) return;
+
+    if (!pDRIPriv->lockRefCount)
+        DRM_LOCK(pDRIPriv->drmFD, pDRIPriv->pSAREA, pDRIPriv->myContext, flags);
+    pDRIPriv->lockRefCount++;
+}
+
+void
+DRIUnlock(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    if(!pDRIPriv) return;
+
+    if (pDRIPriv->lockRefCount > 0) {
+        pDRIPriv->lockRefCount--;
+    }
+    else {
+        ErrorF("DRIUnlock called when not locked\n");
+        return;
+    }
+    if (!pDRIPriv->lockRefCount)
+        DRM_UNLOCK(pDRIPriv->drmFD, pDRIPriv->pSAREA, pDRIPriv->myContext);
+}
+
+void *
+DRIGetSAREAPrivate(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    if (!pDRIPriv) return 0;
+
+    return (void *)(((char*)pDRIPriv->pSAREA)+sizeof(XF86DRISAREARec));
+}
+
+drm_context_t
+DRIGetContext(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    if (!pDRIPriv) return 0;
+
+    return pDRIPriv->myContext;
+}
+
+/* This lets get at the unwrapped functions so that they can correctly
+ * call the lowerlevel functions, and choose whether they will be
+ * called at every level of recursion (eg in validatetree).
+ */
+DRIWrappedFuncsRec *
+DRIGetWrappedFuncs(ScreenPtr pScreen)
+{
+    return &(DRI_SCREEN_PRIV(pScreen)->wrap);
+}
+
+/* note that this returns the library version, not the protocol version */
+void
+DRIQueryVersion(int *majorVersion,
+                int *minorVersion,
+                int *patchVersion)
+{
+    *majorVersion = DRIINFO_MAJOR_VERSION;
+    *minorVersion = DRIINFO_MINOR_VERSION;
+    *patchVersion = DRIINFO_PATCH_VERSION;
+}
+
+static void
+_DRIAdjustFrame(ScrnInfoPtr pScrn, DRIScreenPrivPtr pDRIPriv, int x, int y)
+{
+    pDRIPriv->pSAREA->frame.x      = x;
+    pDRIPriv->pSAREA->frame.y      = y;
+    pDRIPriv->pSAREA->frame.width  = pScrn->frameX1 - x + 1;
+    pDRIPriv->pSAREA->frame.height = pScrn->frameY1 - y + 1;
+}
+
+void
+DRIAdjustFrame(int scrnIndex, int x, int y, int flags)
+{
+    ScreenPtr        pScreen  = screenInfo.screens[scrnIndex];
+    DRIScreenPrivPtr pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    ScrnInfoPtr      pScrn    = xf86Screens[pScreen->myNum];
+    int              px, py;
+
+    if (!pDRIPriv || !pDRIPriv->pSAREA) {
+	DRIDrvMsg(scrnIndex, X_ERROR, "[DRI] No SAREA (%p %p)\n",
+		  pDRIPriv, pDRIPriv ? pDRIPriv->pSAREA : NULL);
+	return;
+    }
+
+    if (pDRIPriv->fullscreen) {
+				/* Fix up frame */
+	pScrn->frameX0 = pDRIPriv->pSAREA->frame.x;
+	pScrn->frameY0 = pDRIPriv->pSAREA->frame.y;
+	pScrn->frameX1 = pScrn->frameX0 + pDRIPriv->pSAREA->frame.width - 1;
+	pScrn->frameY1 = pScrn->frameY0 + pDRIPriv->pSAREA->frame.height - 1;
+
+				/* Fix up cursor */
+	miPointerPosition(&px, &py);
+	if (px < pScrn->frameX0) px = pScrn->frameX0;
+	if (px > pScrn->frameX1) px = pScrn->frameX1;
+	if (py < pScrn->frameY0) py = pScrn->frameY0;
+	if (py > pScrn->frameY1) py = pScrn->frameY1;
+	pScreen->SetCursorPosition(pScreen, px, py, TRUE);
+	return;
+    }
+
+    if (pDRIPriv->wrap.AdjustFrame) {
+	/* unwrap */
+	pScrn->AdjustFrame = pDRIPriv->wrap.AdjustFrame;
+	/* call lower layers */
+	(*pScrn->AdjustFrame)(scrnIndex, x, y, flags);
+	/* rewrap */
+	pDRIPriv->wrap.AdjustFrame = pScrn->AdjustFrame;
+	pScrn->AdjustFrame         = DRIAdjustFrame;
+    }
+
+    _DRIAdjustFrame(pScrn, pDRIPriv, x, y);
+}
+
+/* 
+ * DRIMoveBuffersHelper swaps the regions rects in place leaving you
+ * a region with the rects in the order that you need to blit them,
+ * but it is possibly (likely) an invalid region afterwards.  If you
+ * need to use the region again for anything you have to call 
+ * REGION_VALIDATE on it, or better yet, save a copy first.
+ */
+
+void
+DRIMoveBuffersHelper(
+   ScreenPtr pScreen, 
+   int dx,
+   int dy,
+   int *xdir, 
+   int *ydir, 
+   RegionPtr reg
+)
+{
+   BoxPtr extents, pbox, firstBox, lastBox;
+   BoxRec tmpBox;
+   int y, nbox;
+
+   extents = REGION_EXTENTS(pScreen, reg);
+   nbox = REGION_NUM_RECTS(reg);
+   pbox = REGION_RECTS(reg);
+
+   if((dy > 0) && (dy < (extents->y2 - extents->y1))) {
+     *ydir = -1;
+     if(nbox > 1) {
+        firstBox = pbox;
+        lastBox = pbox + nbox - 1;
+        while((unsigned long)firstBox < (unsigned long)lastBox) {
+           tmpBox = *firstBox;
+           *firstBox = *lastBox;
+           *lastBox = tmpBox;
+           firstBox++;
+           lastBox--;
+        }
+     }
+   } else *ydir = 1;
+
+   if((dx > 0) && (dx < (extents->x2 - extents->x1))) {
+     *xdir = -1;
+     if(nbox > 1) {
+        firstBox = lastBox = pbox;
+        y = pbox->y1;
+        while(--nbox) {
+           pbox++;
+           if(pbox->y1 == y) lastBox++;
+           else {
+              while((unsigned long)firstBox < (unsigned long)lastBox) {
+                 tmpBox = *firstBox;
+                 *firstBox = *lastBox;
+                 *lastBox = tmpBox;
+                 firstBox++;
+                 lastBox--;
+              }
+
+              firstBox = lastBox = pbox;
+              y = pbox->y1;
+           }
+         }
+         while((unsigned long)firstBox < (unsigned long)lastBox) {
+           tmpBox = *firstBox;
+           *firstBox = *lastBox;
+           *lastBox = tmpBox;
+           firstBox++;
+           lastBox--;
+        }
+     }
+   } else *xdir = 1;
+
+}
+
+char *
+DRICreatePCIBusID(pciVideoPtr PciInfo)
+{
+    char *busID;
+    int domain;
+    PCITAG tag;
+
+    busID = xalloc(20);
+    if (busID == NULL)
+	return NULL;
+
+    tag = pciTag(PciInfo->bus, PciInfo->device, PciInfo->func);
+    domain = xf86GetPciDomain(tag);
+    snprintf(busID, 20, "pci:%04x:%02x:%02x.%d", domain, PciInfo->bus,
+	PciInfo->device, PciInfo->func);
+    return busID;
+}