Merge branch 'master' of git+ssh://joukj@git.freedesktop.org/git/mesa/mesa

7 files changed, 1590 insertions, 800 deletions

diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.c b/src/mesa/drivers/dri/common/dri_bufmgr.c
index eaa4fb09c7..407409bf06 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.c
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.c
@@ -1,499 +1,152 @@
-/**************************************************************************
- * 
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
- * All Rights Reserved.
- * 
+/*
+ * Copyright © 2007 Intel Corporation
+ *
  * 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:
- * 
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (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
- * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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:
+ *    Eric Anholt <eric@anholt.net>
  *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * 
- **************************************************************************/
-/*
- * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- *          Keith Whitwell <keithw-at-tungstengraphics-dot-com>
  */
 
-#include <xf86drm.h>
-#include <stdlib.h>
-#include "glthread.h"
-#include "errno.h"
+#include "mtypes.h"
 #include "dri_bufmgr.h"
-#include "string.h"
-#include "imports.h"
-#include "dri_bufpool.h"
 
-_glthread_DECLARE_STATIC_MUTEX(bmMutex);
-
-/*
- * TODO: Introduce fence pools in the same way as 
- * buffer object pools.
+/** @file dri_bufmgr.c
+ *
+ * Convenience functions for buffer management methods.
  */
 
-
-
-typedef struct _DriFenceObject
-{
-   int fd;
-   _glthread_Mutex mutex;
-   int refCount;
-   const char *name;
-   drmFence fence;
-} DriFenceObject;
-
-typedef struct _DriBufferObject
-{
-   DriBufferPool *pool;
-   _glthread_Mutex mutex;
-   int refCount;
-   const char *name;
-   unsigned flags;
-   unsigned hint;
-   unsigned alignment;
-   void *private;
-} DriBufferObject;
-
-
-void
-bmError(int val, const char *file, const char *function, int line)
-{
-   _mesa_printf("Fatal video memory manager error \"%s\".\n"
-                "Check kernel logs or set the LIBGL_DEBUG\n"
-                "environment variable to \"verbose\" for more info.\n"
-                "Detected in file %s, line %d, function %s.\n",
-                strerror(-val), file, line, function);
-#ifndef NDEBUG
-   abort();
-#else
-   abort();
-#endif
-}
-
-DriFenceObject *
-driFenceBuffers(int fd, char *name, unsigned flags)
-{
-   DriFenceObject *fence = (DriFenceObject *) malloc(sizeof(*fence));
-   int ret;
-
-   if (!fence)
-      BM_CKFATAL(-EINVAL);
-
-   _glthread_LOCK_MUTEX(bmMutex);
-   fence->refCount = 1;
-   fence->name = name;
-   fence->fd = fd;
-   _glthread_INIT_MUTEX(fence->mutex);
-   ret = drmFenceBuffers(fd, flags, &fence->fence);
-   _glthread_UNLOCK_MUTEX(bmMutex);
-   if (ret) {
-      free(fence);
-      BM_CKFATAL(ret);
-   }
-   return fence;
-}
-
-
-unsigned 
-driFenceType(DriFenceObject * fence)
-{
-    unsigned ret;
-
-    _glthread_LOCK_MUTEX(bmMutex);
-    ret = fence->fence.flags;
-    _glthread_UNLOCK_MUTEX(bmMutex);
-    
-    return ret;
-}
-
-
-DriFenceObject *
-driFenceReference(DriFenceObject * fence)
-{
-   _glthread_LOCK_MUTEX(bmMutex);
-   ++fence->refCount;
-   _glthread_UNLOCK_MUTEX(bmMutex);
-   return fence;
-}
-
-void
-driFenceUnReference(DriFenceObject * fence)
-{
-   if (!fence)
-      return;
-
-   _glthread_LOCK_MUTEX(bmMutex);
-   if (--fence->refCount == 0) {
-      drmFenceDestroy(fence->fd, &fence->fence);
-      free(fence);
-   }
-   _glthread_UNLOCK_MUTEX(bmMutex);
-}
-
-void
-driFenceFinish(DriFenceObject * fence, unsigned type, int lazy)
-{
-   int ret;
-   unsigned flags = (lazy) ? DRM_FENCE_FLAG_WAIT_LAZY : 0;
-
-   _glthread_LOCK_MUTEX(fence->mutex);
-   ret = drmFenceWait(fence->fd, flags, &fence->fence, type);
-   _glthread_UNLOCK_MUTEX(fence->mutex);
-   BM_CKFATAL(ret);
-}
-
-int
-driFenceSignaled(DriFenceObject * fence, unsigned type)
-{
-   int signaled;
-   int ret;
-
-   if (fence == NULL)
-      return GL_TRUE;
-
-   _glthread_LOCK_MUTEX(fence->mutex);
-   ret = drmFenceSignaled(fence->fd, &fence->fence, type, &signaled);
-   _glthread_UNLOCK_MUTEX(fence->mutex);
-   BM_CKFATAL(ret);
-   return signaled;
-}
-
-
-extern drmBO *
-driBOKernel(struct _DriBufferObject *buf)
-{
-   drmBO *ret;
-
-   assert(buf->private != NULL);
-   ret = buf->pool->kernel(buf->pool, buf->private);
-   if (!ret)
-      BM_CKFATAL(-EINVAL);
-
-   return ret;
-}
-
-void
-driBOWaitIdle(struct _DriBufferObject *buf, int lazy)
+dri_bo *
+dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size,
+	     unsigned int alignment, unsigned int location_mask)
 {
-   struct _DriBufferPool *pool;
-   void *priv;
+   assert((location_mask & ~(DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_MEM_TT |
+			     DRM_BO_FLAG_MEM_VRAM | DRM_BO_FLAG_MEM_PRIV0 |
+			     DRM_BO_FLAG_MEM_PRIV1 | DRM_BO_FLAG_MEM_PRIV2 |
+			     DRM_BO_FLAG_MEM_PRIV3 |
+			     DRM_BO_FLAG_MEM_PRIV4)) == 0);
 
-   _glthread_LOCK_MUTEX(buf->mutex);
-   pool = buf->pool;
-   priv = buf->private;
-   _glthread_UNLOCK_MUTEX(buf->mutex);
-   
-   assert(priv != NULL);
-   BM_CKFATAL(buf->pool->waitIdle(pool, priv, lazy));
+   return bufmgr->bo_alloc(bufmgr, name, size, alignment, location_mask);
 }
 
-void *
-driBOMap(struct _DriBufferObject *buf, unsigned flags, unsigned hint)
+dri_bo *
+dri_bo_alloc_static(dri_bufmgr *bufmgr, const char *name, unsigned long offset,
+		    unsigned long size, void *virtual,
+		    unsigned int location_mask)
 {
-   void *virtual;
+   assert((location_mask & ~(DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_MEM_TT |
+			     DRM_BO_FLAG_MEM_VRAM | DRM_BO_FLAG_MEM_PRIV0 |
+			     DRM_BO_FLAG_MEM_PRIV1 | DRM_BO_FLAG_MEM_PRIV2 |
+			     DRM_BO_FLAG_MEM_PRIV3 |
+			     DRM_BO_FLAG_MEM_PRIV4)) == 0);
 
-   assert(buf->private != NULL);
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   BM_CKFATAL(buf->pool->map(buf->pool, buf->private, flags, hint, &virtual));
-   _glthread_UNLOCK_MUTEX(buf->mutex);
-   return virtual;
+   return bufmgr->bo_alloc_static(bufmgr, name, offset, size, virtual,
+				  location_mask);
 }
 
 void
-driBOUnmap(struct _DriBufferObject *buf)
-{
-   assert(buf->private != NULL);
-
-   buf->pool->unmap(buf->pool, buf->private);
-}
-
-unsigned long
-driBOOffset(struct _DriBufferObject *buf)
-{
-   unsigned long ret;
-
-   assert(buf->private != NULL);
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   ret = buf->pool->offset(buf->pool, buf->private);
-   _glthread_UNLOCK_MUTEX(buf->mutex);
-   return ret;
-}
-
-unsigned
-driBOFlags(struct _DriBufferObject *buf)
-{
-   unsigned ret;
-
-   assert(buf->private != NULL);
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   ret = buf->pool->flags(buf->pool, buf->private);
-   _glthread_UNLOCK_MUTEX(buf->mutex);
-   return ret;
-}
-
-struct _DriBufferObject *
-driBOReference(struct _DriBufferObject *buf)
+dri_bo_reference(dri_bo *bo)
 {
-   _glthread_LOCK_MUTEX(bmMutex);
-   if (++buf->refCount == 1) {
-      BM_CKFATAL(-EINVAL);
-   }
-   _glthread_UNLOCK_MUTEX(bmMutex);
-   return buf;
+   bo->bufmgr->bo_reference(bo);
 }
 
 void
-driBOUnReference(struct _DriBufferObject *buf)
+dri_bo_unreference(dri_bo *bo)
 {
-   int tmp;
-
-   if (!buf)
+   if (bo == NULL)
       return;
 
-   _glthread_LOCK_MUTEX(bmMutex);
-   tmp = --buf->refCount;
-   _glthread_UNLOCK_MUTEX(bmMutex);
-   if (!tmp) {
-      buf->pool->destroy(buf->pool, buf->private);
-      free(buf);
-   }
+   bo->bufmgr->bo_unreference(bo);
 }
 
-void
-driBOData(struct _DriBufferObject *buf,
-          unsigned size, const void *data, unsigned flags)
-{
-   void *virtual;
-   int newBuffer;
-   struct _DriBufferPool *pool;
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   pool = buf->pool;
-   if (!pool->create) {
-      _mesa_error(NULL, GL_INVALID_OPERATION,
-                  "driBOData called on invalid buffer\n");
-      BM_CKFATAL(-EINVAL);
-   }
-   newBuffer = !buf->private || (pool->size(pool, buf->private) < size) ||
-      pool->map(pool, buf->private, DRM_BO_FLAG_WRITE,
-                DRM_BO_HINT_DONT_BLOCK, &virtual);
-
-   if (newBuffer) {
-      if (buf->private)
-         pool->destroy(pool, buf->private);
-      if (!flags)
-         flags = buf->flags;
-      buf->private = pool->create(pool, size, flags, DRM_BO_HINT_DONT_FENCE, 
-				  buf->alignment);
-      if (!buf->private)
-         BM_CKFATAL(-ENOMEM);
-      BM_CKFATAL(pool->map(pool, buf->private,
-                           DRM_BO_FLAG_WRITE,
-                           DRM_BO_HINT_DONT_BLOCK, &virtual));
-   }
-
-   if (data != NULL)
-      memcpy(virtual, data, size);
-
-   BM_CKFATAL(pool->unmap(pool, buf->private));
-   _glthread_UNLOCK_MUTEX(buf->mutex);
-}
-
-void
-driBOSubData(struct _DriBufferObject *buf,
-             unsigned long offset, unsigned long size, const void *data)
+int
+dri_bo_map(dri_bo *buf, GLboolean write_enable)
 {
-   void *virtual;
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   if (size && data) {
-      BM_CKFATAL(buf->pool->map(buf->pool, buf->private,
-                                DRM_BO_FLAG_WRITE, 0, &virtual));
-      memcpy((unsigned char *) virtual + offset, data, size);
-      BM_CKFATAL(buf->pool->unmap(buf->pool, buf->private));
-   }
-   _glthread_UNLOCK_MUTEX(buf->mutex);
+   return buf->bufmgr->bo_map(buf, write_enable);
 }
 
-void
-driBOGetSubData(struct _DriBufferObject *buf,
-                unsigned long offset, unsigned long size, void *data)
+int
+dri_bo_unmap(dri_bo *buf)
 {
-   void *virtual;
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   if (size && data) {
-      BM_CKFATAL(buf->pool->map(buf->pool, buf->private,
-                                DRM_BO_FLAG_READ, 0, &virtual));
-      memcpy(data, (unsigned char *) virtual + offset, size);
-      BM_CKFATAL(buf->pool->unmap(buf->pool, buf->private));
-   }
-   _glthread_UNLOCK_MUTEX(buf->mutex);
+   return buf->bufmgr->bo_unmap(buf);
 }
 
-void
-driBOSetStatic(struct _DriBufferObject *buf,
-               unsigned long offset,
-               unsigned long size, void *virtual, unsigned flags)
+int
+dri_bo_validate(dri_bo *buf, unsigned int flags)
 {
-   _glthread_LOCK_MUTEX(buf->mutex);
-   if (buf->private != NULL) {
-      _mesa_error(NULL, GL_INVALID_OPERATION,
-                  "Invalid buffer for setStatic\n");
-      BM_CKFATAL(-EINVAL);
-   }
-   if (buf->pool->setstatic == NULL) {
-      _mesa_error(NULL, GL_INVALID_OPERATION,
-                  "Invalid buffer pool for setStatic\n");
-      BM_CKFATAL(-EINVAL);
-   }
-
-   if (!flags)
-      flags = buf->flags;
-
-   buf->private = buf->pool->setstatic(buf->pool, offset, size,
-                                       virtual, flags);
-   if (!buf->private) {
-      _mesa_error(NULL, GL_OUT_OF_MEMORY,
-                  "Invalid buffer pool for setStatic\n");
-      BM_CKFATAL(-ENOMEM);
-   }
-   _glthread_UNLOCK_MUTEX(buf->mutex);
+   return buf->bufmgr->bo_validate(buf, flags);
 }
 
-
-
-void
-driGenBuffers(struct _DriBufferPool *pool,
-              const char *name,
-              unsigned n,
-              struct _DriBufferObject *buffers[],
-              unsigned alignment, unsigned flags, unsigned hint)
+dri_fence *
+dri_fence_validated(dri_bufmgr *bufmgr, const char *name, GLboolean flushed)
 {
-   struct _DriBufferObject *buf;
-   int i;
-
-   flags = (flags) ? flags : DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_MEM_VRAM |
-      DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE;
-
-
-   for (i = 0; i < n; ++i) {
-      buf = (struct _DriBufferObject *) calloc(1, sizeof(*buf));
-      if (!buf)
-         BM_CKFATAL(-ENOMEM);
-
-      _glthread_INIT_MUTEX(buf->mutex);
-      _glthread_LOCK_MUTEX(buf->mutex);
-      _glthread_LOCK_MUTEX(bmMutex);
-      buf->refCount = 1;
-      _glthread_UNLOCK_MUTEX(bmMutex);
-      buf->flags = flags;
-      buf->hint = hint;
-      buf->name = name;
-      buf->alignment = alignment;
-      buf->pool = pool;
-      _glthread_UNLOCK_MUTEX(buf->mutex);
-      buffers[i] = buf;
-   }
+   return bufmgr->fence_validated(bufmgr, name, flushed);
 }
 
 void
-driDeleteBuffers(unsigned n, struct _DriBufferObject *buffers[])
+dri_fence_wait(dri_fence *fence)
 {
-   int i;
-
-   for (i = 0; i < n; ++i) {
-      driBOUnReference(buffers[i]);
-   }
+   fence->bufmgr->fence_wait(fence);
 }
 
-
 void
-driInitBufMgr(int fd)
+dri_fence_reference(dri_fence *fence)
 {
-   ;
+   fence->bufmgr->fence_reference(fence);
 }
 
-
 void
-driBOCreateList(int target, drmBOList * list)
+dri_fence_unreference(dri_fence *fence)
 {
-   _glthread_LOCK_MUTEX(bmMutex);
-   BM_CKFATAL(drmBOCreateList(target, list));
-   _glthread_UNLOCK_MUTEX(bmMutex);
-}
+   if (fence == NULL)
+      return;
 
-void
-driBOResetList(drmBOList * list)
-{
-   _glthread_LOCK_MUTEX(bmMutex);
-   BM_CKFATAL(drmBOResetList(list));
-   _glthread_UNLOCK_MUTEX(bmMutex);
+   fence->bufmgr->fence_unreference(fence);
 }
 
 void
-driBOAddListItem(drmBOList * list, struct _DriBufferObject *buf,
-                 unsigned flags, unsigned mask)
+dri_bo_subdata(dri_bo *bo, unsigned long offset,
+	       unsigned long size, const void *data)
 {
-   int newItem;
-
-   _glthread_LOCK_MUTEX(buf->mutex);
-   _glthread_LOCK_MUTEX(bmMutex);
-   BM_CKFATAL(drmAddValidateItem(list, driBOKernel(buf),
-                                 flags, mask, &newItem));
-   _glthread_UNLOCK_MUTEX(bmMutex);
-
-   /*
-    * Tell userspace pools to validate the buffer. This should be a 
-    * noop if the pool is already validated.
-    * FIXME: We should have a list for this as well.
-    */
-
-   if (buf->pool->validate) {
-      BM_CKFATAL(buf->pool->validate(buf->pool, buf->private));
-   }
+   if (size == 0 || data == NULL)
+      return;
 
-   _glthread_UNLOCK_MUTEX(buf->mutex);
+   dri_bo_map(bo, GL_TRUE);
+   memcpy((unsigned char *)bo->virtual + offset, data, size);
+   dri_bo_unmap(bo);
 }
 
 void
-driBOFence(struct _DriBufferObject *buf, struct _DriFenceObject *fence)
+dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
+		   unsigned long size, void *data)
 {
-   _glthread_LOCK_MUTEX(buf->mutex);
-   BM_CKFATAL(buf->pool->fence(buf->pool, buf->private, fence));
-   _glthread_UNLOCK_MUTEX(buf->mutex);
+   if (size == 0 || data == NULL)
+      return;
 
+   dri_bo_map(bo, GL_FALSE);
+   memcpy(data, (unsigned char *)bo->virtual + offset, size);
+   dri_bo_unmap(bo);
 }
 
 void
-driBOValidateList(int fd, drmBOList * list)
+dri_bufmgr_destroy(dri_bufmgr *bufmgr)
 {
-   _glthread_LOCK_MUTEX(bmMutex);
-   BM_CKFATAL(drmBOValidateList(fd, list));
-   _glthread_UNLOCK_MUTEX(bmMutex);
-}
-
-void
-driPoolTakeDown(struct _DriBufferPool *pool)
-{
-   pool->takeDown(pool);
-
+   bufmgr->destroy(bufmgr);
 }
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.h b/src/mesa/drivers/dri/common/dri_bufmgr.h
index 01f149ae4e..3be342926f 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.h
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.h
@@ -1,5 +1,6 @@
 /**************************************************************************
  * 
+ * Copyright © 2007 Intel Corporation
  * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
  * All Rights Reserved.
  * 
@@ -28,72 +29,170 @@
 /*
  * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  *          Keith Whitwell <keithw-at-tungstengraphics-dot-com>
+ *	    Eric Anholt <eric@anholt.net>
  */
 
 #ifndef _DRI_BUFMGR_H_
 #define _DRI_BUFMGR_H_
 #include <xf86drm.h>
 
+typedef struct _dri_bufmgr dri_bufmgr;
+typedef struct _dri_bo dri_bo;
+typedef struct _dri_fence dri_fence;
 
-struct _DriFenceObject;
-struct _DriBufferObject;
-struct _DriBufferPool;
+struct _dri_bo {
+   /** Size in bytes of the buffer object. */
+   unsigned long size;
+   /**
+    * Card virtual address (offset from the beginning of the aperture) for the
+    * object.  Only valid while validated.
+    */
+   unsigned long offset;
+   /**
+    * Virtual address for accessing the buffer data.  Only valid while mapped.
+    */
+   void *virtual;
+   /** Buffer manager context associated with this buffer object */
+   dri_bufmgr *bufmgr;
+};
 
-extern struct _DriFenceObject *driFenceBuffers(int fd, char *name,
-                                               unsigned flags);
+struct _dri_fence {
+   /**
+    * This is an ORed mask of DRM_BO_FLAG_READ, DRM_BO_FLAG_WRITE, and
+    * DRM_FLAG_EXE indicating the operations associated with this fence.
+    *
+    * It is constant for the life of the fence object.
+    */
+   unsigned int type;
+   /** Buffer manager context associated with this fence */
+   dri_bufmgr *bufmgr;
+};
 
-extern struct _DriFenceObject *driFenceReference(struct _DriFenceObject *fence);
+/**
+ * Context for a buffer manager instance.
+ *
+ * Contains public methods followed by private storage for the buffer manager.
+ */
+struct _dri_bufmgr {
+   /**
+    * Allocate a buffer object.
+    *
+    * Buffer objects are not necessarily initially mapped into CPU virtual
+    * address space or graphics device aperture.  They must be mapped using
+    * bo_map() to be used by the CPU, and validated for use using bo_validate()
+    * to be used from the graphics device.
+    */
+   dri_bo *(*bo_alloc)(dri_bufmgr *bufmgr_ctx, const char *name,
+		       unsigned long size, unsigned int alignment,
+		       unsigned int location_mask);
 
-extern void driFenceUnReference(struct _DriFenceObject *fence);
+   /**
+    * Allocates a buffer object for a static allocation.
+    *
+    * Static allocations are ones such as the front buffer that are offered by
+    * the X Server, which are never evicted and never moved.
+    */
+   dri_bo *(*bo_alloc_static)(dri_bufmgr *bufmgr_ctx, const char *name,
+			      unsigned long offset, unsigned long size,
+			      void *virtual, unsigned int location_mask);
 
-extern void
-driFenceFinish(struct _DriFenceObject *fence, unsigned type, int lazy);
+   /** Takes a reference on a buffer object */
+   void (*bo_reference)(dri_bo *bo);
 
-extern int driFenceSignaled(struct _DriFenceObject *fence, unsigned type);
-extern unsigned driFenceType(struct _DriFenceObject *fence);
+   /**
+    * Releases a reference on a buffer object, freeing the data if
+    * rerefences remain.
+    */
+   void (*bo_unreference)(dri_bo *bo);
 
-/*
- * Return a pointer to the libdrm buffer object this DriBufferObject
- * uses.
- */
+   /**
+    * Maps the buffer into userspace.
+    *
+    * This function will block waiting for any existing fence on the buffer to
+    * clear, first.  The resulting mapping is available at buf->virtual.
+\    */
+   int (*bo_map)(dri_bo *buf, GLboolean write_enable);
+
+   /** Reduces the refcount on the userspace mapping of the buffer object. */
+   int (*bo_unmap)(dri_bo *buf);
+
+   /**
+    * Makes the buffer accessible to the graphics chip.
+    *
+    * The resulting offset of the buffer within the graphics aperture is then
+    * available at buf->offset until the buffer is fenced.
+    *
+    * Flags should consist of the memory types that the buffer may be validated
+    * into and the read/write/exe flags appropriate to the use of the buffer.
+    */
+   int (*bo_validate)(dri_bo *buf, unsigned int flags);
+
+   /**
+    * Associates the current set of validated buffers with a fence.
+    *
+    * Once fenced, the buffer manager will allow the validated buffers to be
+    * evicted when the graphics device's execution has passed the fence
+    * command.
+    *
+    * The fence object will have flags for the sum of the read/write/exe flags
+    * of the validated buffers associated with it.
+    */
+   dri_fence * (*fence_validated)(dri_bufmgr *bufmgr, const char *name,
+				  GLboolean flushed);
+
+   /** Takes a reference on a fence object */
+   void (*fence_reference)(dri_fence *fence);
+
+   /**
+    * Releases a reference on a fence object, freeing the data if
+    * rerefences remain.
+    */
+   void (*fence_unreference)(dri_fence *fence);
+
+   /**
+    * Blocks until the given fence is signaled.
+    */
+   void (*fence_wait)(dri_fence *fence);
+
+   /**
+    * Tears down the buffer manager instance.
+    */
+   void (*destroy)(dri_bufmgr *bufmgr);
+};
+
+dri_bo *dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size,
+		     unsigned int alignment, unsigned int location_mask);
+dri_bo *dri_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
+			    unsigned long offset, unsigned long size,
+			    void *virtual, unsigned int location_mask);
+void dri_bo_reference(dri_bo *bo);
+void dri_bo_unreference(dri_bo *bo);
+int dri_bo_map(dri_bo *buf, GLboolean write_enable);
+int dri_bo_unmap(dri_bo *buf);
+int dri_bo_validate(dri_bo *buf, unsigned int flags);
+dri_fence *dri_fence_validated(dri_bufmgr *bufmgr, const char *name,
+			       GLboolean flushed);
+void dri_fence_wait(dri_fence *fence);
+void dri_fence_reference(dri_fence *fence);
+void dri_fence_unreference(dri_fence *fence);
+
+void dri_bo_subdata(dri_bo *bo, unsigned long offset,
+		    unsigned long size, const void *data);
+void dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
+			unsigned long size, void *data);
+
+dri_bufmgr *dri_bufmgr_ttm_init(int fd, unsigned int fence_type,
+				unsigned int fence_type_flush);
 
-extern drmBO *driBOKernel(struct _DriBufferObject *buf);
-extern void *driBOMap(struct _DriBufferObject *buf, unsigned flags,
-                      unsigned hint);
-extern void driBOUnmap(struct _DriBufferObject *buf);
-extern unsigned long driBOOffset(struct _DriBufferObject *buf);
-extern unsigned driBOFlags(struct _DriBufferObject *buf);
-extern struct _DriBufferObject *driBOReference(struct _DriBufferObject *buf);
-extern void driBOUnReference(struct _DriBufferObject *buf);
-extern void driBOData(struct _DriBufferObject *r_buf,
-                      unsigned size, const void *data, unsigned flags);
-extern void driBOSubData(struct _DriBufferObject *buf,
-                         unsigned long offset, unsigned long size,
-                         const void *data);
-extern void driBOGetSubData(struct _DriBufferObject *buf,
-                            unsigned long offset, unsigned long size,
-                            void *data);
-extern void driGenBuffers(struct _DriBufferPool *pool,
-                          const char *name,
-                          unsigned n,
-                          struct _DriBufferObject *buffers[],
-                          unsigned alignment, unsigned flags, unsigned hint);
-extern void driDeleteBuffers(unsigned n, struct _DriBufferObject *buffers[]);
-extern void driInitBufMgr(int fd);
-extern void driBOCreateList(int target, drmBOList * list);
-extern void driBOResetList(drmBOList * list);
-extern void driBOAddListItem(drmBOList * list, struct _DriBufferObject *buf,
-                             unsigned flags, unsigned mask);
-extern void driBOValidateList(int fd, drmBOList * list);
-
-extern void driBOFence(struct _DriBufferObject *buf,
-                       struct _DriFenceObject *fence);
-
-extern void driPoolTakeDown(struct _DriBufferPool *pool);
-extern void driBOSetStatic(struct _DriBufferObject *buf,
-                           unsigned long offset,
-                           unsigned long size, void *virtual, unsigned flags);
-extern void driBOWaitIdle(struct _DriBufferObject *buf, int lazy);
-extern void driPoolTakeDown(struct _DriBufferPool *pool);
+void dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr);
+dri_bufmgr *dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
+				 unsigned long size,
+				 unsigned int (*fence_emit)(void *private),
+				 int (*fence_wait)(void *private,
+						   unsigned int cookie),
+				 void *driver_priv);
+void dri_bufmgr_destroy(dri_bufmgr *bufmgr);
+dri_bo *dri_ttm_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name,
+				      unsigned int handle);
 
 #endif
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
new file mode 100644
index 0000000000..e0d23a3647
--- /dev/null
+++ b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
@@ -0,0 +1,882 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+/* Originally a fake version of the buffer manager so that we can
+ * prototype the changes in a driver fairly quickly, has been fleshed
+ * out to a fully functional interim solution.
+ *
+ * Basically wraps the old style memory management in the new
+ * programming interface, but is more expressive and avoids many of
+ * the bugs in the old texture manager.
+ */
+#include "mtypes.h"
+#include "dri_bufmgr.h"
+#include "drm.h"
+
+#include "simple_list.h"
+#include "mm.h"
+#include "imports.h"
+
+#if 0
+#define DBG(...) _mesa_printf(__VA_ARGS__)
+#else
+#define DBG(...)
+#endif
+
+/* Internal flags:
+ */
+#define BM_NO_BACKING_STORE			0x00000001
+#define BM_NO_FENCE_SUBDATA			0x00000002
+#define BM_PINNED				0x00000004
+
+/* Wrapper around mm.c's mem_block, which understands that you must
+ * wait for fences to expire before memory can be freed.  This is
+ * specific to our use of memcpy for uploads - an upload that was
+ * processed through the command queue wouldn't need to care about
+ * fences.
+ */
+struct block {
+   struct block *next, *prev;
+   struct mem_block *mem;	/* BM_MEM_AGP */
+
+   unsigned on_hardware:1;
+   unsigned fenced:1;
+
+   unsigned fence;		/* BM_MEM_AGP, Split to read_fence, write_fence */
+
+   dri_bo *bo;
+   void *virtual;
+};
+
+typedef struct _bufmgr_fake {
+   dri_bufmgr bufmgr;
+
+   _glthread_Mutex mutex;	/**< for thread safety */
+
+   unsigned long low_offset;
+   unsigned long size;
+   void *virtual;
+
+   struct mem_block *heap;
+   struct block lru;		/* only allocated, non-fence-pending blocks here */
+
+   unsigned buf_nr;		/* for generating ids */
+
+   struct block on_hardware;	/* after bmValidateBuffers */
+   struct block fenced;		/* after bmFenceBuffers (mi_flush, emit irq, write dword) */
+                                /* then to bufmgr->lru or free() */
+
+   unsigned int last_fence;
+
+   unsigned fail:1;
+   unsigned need_fence:1;
+   GLboolean thrashing;
+
+   /**
+    * Driver callback to emit a fence, returning the cookie.
+    *
+    * Currently, this also requires that a write flush be emitted before
+    * emitting the fence, but this should change.
+    */
+   unsigned int (*fence_emit)(void *private);
+   /** Driver callback to wait for a fence cookie to have passed. */
+   int (*fence_wait)(void *private, unsigned int fence_cookie);
+   /** Driver-supplied argument to driver callbacks */
+   void *driver_priv;
+} dri_bufmgr_fake;
+
+typedef struct _dri_bo_fake {
+   dri_bo bo;
+
+   unsigned id;			/* debug only */
+   const char *name;
+
+   unsigned dirty:1;
+   unsigned int refcount;
+   /* Flags may consist of any of the DRM_BO flags, plus
+    * DRM_BO_NO_BACKING_STORE and BM_NO_FENCE_SUBDATA, which are the first two
+    * driver private flags.
+    */
+   unsigned int flags;
+   unsigned int alignment;
+   GLboolean is_static;
+
+   struct block *block;
+   void *backing_store;
+   void (*invalidate_cb)(dri_bufmgr *bufmgr, void * );
+   void *invalidate_ptr;
+} dri_bo_fake;
+
+typedef struct _dri_fence_fake {
+   dri_fence fence;
+
+   const char *name;
+   unsigned int refcount;
+   unsigned int fence_cookie;
+   GLboolean flushed;
+} dri_fence_fake;
+
+static int clear_fenced(dri_bufmgr_fake *bufmgr_fake,
+			unsigned int fence_cookie);
+
+#define MAXFENCE 0x7fffffff
+
+static GLboolean FENCE_LTE( unsigned a, unsigned b )
+{
+   if (a == b)
+      return GL_TRUE;
+
+   if (a < b && b - a < (1<<24))
+      return GL_TRUE;
+
+   if (a > b && MAXFENCE - a + b < (1<<24))
+      return GL_TRUE;
+
+   return GL_FALSE;
+}
+
+static unsigned int
+_fence_emit_internal(dri_bufmgr_fake *bufmgr_fake)
+{
+   bufmgr_fake->last_fence = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv);
+   return bufmgr_fake->last_fence;
+}
+
+static void
+_fence_wait_internal(dri_bufmgr_fake *bufmgr_fake, unsigned int cookie)
+{
+   int ret;
+
+   ret = bufmgr_fake->fence_wait(bufmgr_fake->driver_priv, cookie);
+   if (ret != 0) {
+      _mesa_printf("%s:%d: Error %d waiting for fence.\n",
+		   __FILE__, __LINE__);
+      abort();
+   }
+   clear_fenced(bufmgr_fake, cookie);
+}
+
+static GLboolean
+_fence_test(dri_bufmgr_fake *bufmgr_fake, unsigned fence)
+{
+   /* Slight problem with wrap-around:
+    */
+   return fence == 0 || FENCE_LTE(fence, bufmgr_fake->last_fence);
+}
+
+/**
+ * Allocate a memory manager block for the buffer.
+ */
+static GLboolean
+alloc_block(dri_bo *bo)
+{
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+   dri_bufmgr_fake *bufmgr_fake= (dri_bufmgr_fake *)bo->bufmgr;
+   struct block *block = (struct block *)calloc(sizeof *block, 1);
+   unsigned int align_log2 = ffs(bo_fake->alignment);
+   GLuint sz;
+
+   if (!block)
+      return GL_FALSE;
+
+   sz = (bo->size + bo_fake->alignment - 1) & ~(bo_fake->alignment - 1);
+
+   block->mem = mmAllocMem(bufmgr_fake->heap, sz, align_log2, 0);
+   if (!block->mem) {
+      free(block);
+      return GL_FALSE;
+   }
+
+   make_empty_list(block);
+
+   /* Insert at head or at tail???   
+    */
+   insert_at_tail(&bufmgr_fake->lru, block);
+
+   block->virtual = bufmgr_fake->virtual +
+      block->mem->ofs - bufmgr_fake->low_offset;
+   block->bo = bo;
+
+   bo_fake->block = block;
+
+   return GL_TRUE;
+}
+
+/* Release the card storage associated with buf:
+ */
+static void free_block(dri_bufmgr_fake *bufmgr_fake, struct block *block)
+{
+   DBG("free block %p\n", block);
+
+   if (!block)
+      return;
+
+   if (block->on_hardware) {
+      block->bo = NULL;
+   }
+   else if (block->fenced) {
+      block->bo = NULL;
+   }
+   else {
+      DBG("    - free immediately\n");
+      remove_from_list(block);
+
+      mmFreeMem(block->mem);
+      free(block);
+   }
+}
+
+static void
+alloc_backing_store(dri_bo *bo)
+{
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+   assert(!bo_fake->backing_store);
+   assert(!(bo_fake->flags & (BM_PINNED|BM_NO_BACKING_STORE)));
+
+   bo_fake->backing_store = ALIGN_MALLOC(bo->size, 64);
+}
+
+static void
+free_backing_store(dri_bo *bo)
+{
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+   assert(!(bo_fake->flags & (BM_PINNED|BM_NO_BACKING_STORE)));
+
+   if (bo_fake->backing_store) {
+      ALIGN_FREE(bo_fake->backing_store);
+      bo_fake->backing_store = NULL;
+   }
+}
+
+static void
+set_dirty(dri_bo *bo)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   if (bo_fake->flags & BM_NO_BACKING_STORE)
+      bo_fake->invalidate_cb(&bufmgr_fake->bufmgr, bo_fake->invalidate_ptr);
+
+   assert(!(bo_fake->flags & BM_PINNED));
+
+   DBG("set_dirty - buf %d\n", bo_fake->id);
+   bo_fake->dirty = 1;
+}
+
+static GLboolean
+evict_lru(dri_bufmgr_fake *bufmgr_fake, GLuint max_fence)
+{
+   struct block *block, *tmp;
+
+   DBG("%s\n", __FUNCTION__);
+
+   foreach_s(block, tmp, &bufmgr_fake->lru) {
+      dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
+
+      if (bo_fake != NULL && (bo_fake->flags & BM_NO_FENCE_SUBDATA))
+	 continue;
+
+      if (block->fence && max_fence && !FENCE_LTE(block->fence, max_fence))
+	 return 0;
+
+      set_dirty(&bo_fake->bo);
+      bo_fake->block = NULL;
+
+      free_block(bufmgr_fake, block);
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+#define foreach_s_rev(ptr, t, list)   \
+        for(ptr=(list)->prev,t=(ptr)->prev; list != ptr; ptr=t, t=(t)->prev)
+
+static GLboolean
+evict_mru(dri_bufmgr_fake *bufmgr_fake)
+{
+   struct block *block, *tmp;
+
+   DBG("%s\n", __FUNCTION__);
+
+   foreach_s_rev(block, tmp, &bufmgr_fake->lru) {
+      dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
+
+      if (bo_fake && (bo_fake->flags & BM_NO_FENCE_SUBDATA))
+	 continue;
+
+      set_dirty(&bo_fake->bo);
+      bo_fake->block = NULL;
+
+      free_block(bufmgr_fake, block);
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+/**
+ * Removes all objects from the fenced list older than the given fence.
+ */
+static int clear_fenced(dri_bufmgr_fake *bufmgr_fake,
+			unsigned int fence_cookie)
+{
+   struct block *block, *tmp;
+   int ret = 0;
+
+   foreach_s(block, tmp, &bufmgr_fake->fenced) {
+      assert(block->fenced);
+
+      if (_fence_test(bufmgr_fake, block->fence)) {
+
+	 block->fenced = 0;
+
+	 if (!block->bo) {
+	    DBG("delayed free: offset %x sz %x\n",
+		block->mem->ofs, block->mem->size);
+	    remove_from_list(block);
+	    mmFreeMem(block->mem);
+	    free(block);
+	 }
+	 else {
+	    DBG("return to lru: offset %x sz %x\n",
+		block->mem->ofs, block->mem->size);
+	    move_to_tail(&bufmgr_fake->lru, block);
+	 }
+
+	 ret = 1;
+      }
+      else {
+	 /* Blocks are ordered by fence, so if one fails, all from
+	  * here will fail also:
+	  */
+	 break;
+      }
+   }
+
+   DBG("%s: %d\n", __FUNCTION__, ret);
+   return ret;
+}
+
+static void fence_blocks(dri_bufmgr_fake *bufmgr_fake, unsigned fence)
+{
+   struct block *block, *tmp;
+
+   foreach_s (block, tmp, &bufmgr_fake->on_hardware) {
+      DBG("Fence block %p (sz 0x%x buf %p) with fence %d\n", block,
+	  block->mem->size, block->bo, fence);
+      block->fence = fence;
+
+      block->on_hardware = 0;
+      block->fenced = 1;
+
+      /* Move to tail of pending list here
+       */
+      move_to_tail(&bufmgr_fake->fenced, block);
+   }
+
+   assert(is_empty_list(&bufmgr_fake->on_hardware));
+}
+
+static GLboolean evict_and_alloc_block(dri_bo *bo)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   assert(bo_fake->block == NULL);
+
+   /* Search for already free memory:
+    */
+   if (alloc_block(bo))
+      return GL_TRUE;
+
+   /* If we're not thrashing, allow lru eviction to dig deeper into
+    * recently used textures.  We'll probably be thrashing soon:
+    */
+   if (!bufmgr_fake->thrashing) {
+      while (evict_lru(bufmgr_fake, 0))
+	 if (alloc_block(bo))
+	    return GL_TRUE;
+   }
+
+   /* Keep thrashing counter alive?
+    */
+   if (bufmgr_fake->thrashing)
+      bufmgr_fake->thrashing = 20;
+
+   /* Wait on any already pending fences - here we are waiting for any
+    * freed memory that has been submitted to hardware and fenced to
+    * become available:
+    */
+   while (!is_empty_list(&bufmgr_fake->fenced)) {
+      GLuint fence = bufmgr_fake->fenced.next->fence;
+      _fence_wait_internal(bufmgr_fake, fence);
+
+      if (alloc_block(bo))
+	 return GL_TRUE;
+   }
+
+   if (!is_empty_list(&bufmgr_fake->on_hardware)) {
+      while (!is_empty_list(&bufmgr_fake->fenced)) {
+	 GLuint fence = bufmgr_fake->fenced.next->fence;
+	 _fence_wait_internal(bufmgr_fake, fence);
+      }
+
+      if (!bufmgr_fake->thrashing) {
+	 DBG("thrashing\n");
+      }
+      bufmgr_fake->thrashing = 20;
+
+      if (alloc_block(bo))
+	 return GL_TRUE;
+   }
+
+   while (evict_mru(bufmgr_fake))
+      if (alloc_block(bo))
+	 return GL_TRUE;
+
+   DBG("%s 0x%x bytes failed\n", __FUNCTION__, bo->size);
+
+   assert(is_empty_list(&bufmgr_fake->on_hardware));
+   assert(is_empty_list(&bufmgr_fake->fenced));
+
+   return GL_FALSE;
+}
+
+/***********************************************************************
+ * Public functions
+ */
+
+/**
+ * Wait for hardware idle by emitting a fence and waiting for it.
+ */
+static void
+dri_bufmgr_fake_wait_idle(dri_bufmgr_fake *bufmgr_fake)
+{
+   unsigned int cookie;
+
+   cookie = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv);
+   _fence_wait_internal(bufmgr_fake, cookie);
+}
+
+/* Specifically ignore texture memory sharing.
+ *  -- just evict everything
+ *  -- and wait for idle
+ */
+void
+dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   {
+      struct block *block, *tmp;
+
+      bufmgr_fake->need_fence = 1;
+      bufmgr_fake->fail = 0;
+
+      /* Wait for hardware idle.  We don't know where acceleration has been
+       * happening, so we'll need to wait anyway before letting anything get
+       * put on the card again.
+       */
+      dri_bufmgr_fake_wait_idle(bufmgr_fake);
+
+      /* Check that we hadn't released the lock without having fenced the last
+       * set of buffers.
+       */
+      assert(is_empty_list(&bufmgr_fake->fenced));
+      assert(is_empty_list(&bufmgr_fake->on_hardware));
+
+      foreach_s(block, tmp, &bufmgr_fake->lru) {
+	 assert(_fence_test(bufmgr_fake, block->fence));
+	 set_dirty(block->bo);
+      }
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+}
+
+static dri_bo *
+dri_fake_bo_alloc(dri_bufmgr *bufmgr, const char *name,
+		  unsigned long size, unsigned int alignment,
+		  unsigned int location_mask)
+{
+   dri_bufmgr_fake *bufmgr_fake;
+   dri_bo_fake *bo_fake;
+
+   bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
+
+   bo_fake = calloc(1, sizeof(*bo_fake));
+   if (!bo_fake)
+      return NULL;
+
+   bo_fake->bo.size = size;
+   bo_fake->bo.offset = -1;
+   bo_fake->bo.virtual = NULL;
+   bo_fake->bo.bufmgr = bufmgr;
+   bo_fake->refcount = 1;
+
+   /* Alignment must be a power of two */
+   assert((alignment & (alignment - 1)) == 0);
+   if (alignment == 0)
+      alignment = 1;
+   bo_fake->alignment = alignment;
+   bo_fake->id = ++bufmgr_fake->buf_nr;
+   bo_fake->name = name;
+   bo_fake->flags = 0;
+   bo_fake->is_static = GL_FALSE;
+
+   DBG("drm_bo_alloc: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
+       bo_fake->bo.size / 1024);
+
+   return &bo_fake->bo;
+}
+
+static dri_bo *
+dri_fake_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
+			 unsigned long offset, unsigned long size,
+			 void *virtual, unsigned int location_mask)
+{
+   dri_bufmgr_fake *bufmgr_fake;
+   dri_bo_fake *bo_fake;
+
+   bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
+
+   bo_fake = calloc(1, sizeof(*bo_fake));
+   if (!bo_fake)
+      return NULL;
+
+   bo_fake->bo.size = size;
+   bo_fake->bo.offset = offset;
+   bo_fake->bo.virtual = virtual;
+   bo_fake->bo.bufmgr = bufmgr;
+   bo_fake->refcount = 1;
+   bo_fake->id = ++bufmgr_fake->buf_nr;
+   bo_fake->name = name;
+   bo_fake->flags = BM_PINNED | DRM_BO_FLAG_NO_MOVE;
+   bo_fake->is_static = GL_TRUE;
+
+   DBG("drm_bo_alloc_static: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
+       bo_fake->bo.size / 1024);
+
+   return &bo_fake->bo;
+}
+
+static void
+dri_fake_bo_reference(dri_bo *bo)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   bo_fake->refcount++;
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+}
+
+static void
+dri_fake_bo_unreference(dri_bo *bo)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   if (!bo)
+      return;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   if (--bo_fake->refcount == 0) {
+      /* No remaining references, so free it */
+      if (bo_fake->block)
+	 free_block(bufmgr_fake, bo_fake->block);
+      free_backing_store(bo);
+      _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+      free(bo);
+      return;
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+}
+
+/**
+ * Map a buffer into bo->virtual, allocating either card memory space (If
+ * BM_NO_BACKING_STORE or BM_PINNED) or backing store, as necessary.
+ */
+static int
+dri_fake_bo_map(dri_bo *bo, GLboolean write_enable)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   /* Static buffers are always mapped. */
+   if (bo_fake->is_static)
+      return 0;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   {
+      DBG("drm_bo_map: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
+	  bo_fake->bo.size / 1024);
+
+      if (bo->virtual != NULL) {
+	 _mesa_printf("%s: already mapped\n", __FUNCTION__);
+	 abort();
+      }
+      else if (bo_fake->flags & (BM_NO_BACKING_STORE|BM_PINNED)) {
+
+	 if (!bo_fake->block && !evict_and_alloc_block(bo)) {
+	    DBG("%s: alloc failed\n", __FUNCTION__);
+	    bufmgr_fake->fail = 1;
+	    _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+	    return 1;
+	 }
+	 else {
+	    assert(bo_fake->block);
+	    bo_fake->dirty = 0;
+
+	    if (!(bo_fake->flags & BM_NO_FENCE_SUBDATA))
+	       dri_bufmgr_fake_wait_idle(bufmgr_fake);
+
+	    bo->virtual = bo_fake->block->virtual;
+	 }
+      }
+      else {
+	 if (write_enable)
+	    set_dirty(bo);
+
+	 if (bo_fake->backing_store == 0)
+	    alloc_backing_store(bo);
+
+	 bo->virtual = bo_fake->backing_store;
+      }
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+   return 0;
+}
+
+static int
+dri_fake_bo_unmap(dri_bo *bo)
+{
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   /* Static buffers are always mapped. */
+   if (bo_fake->is_static)
+      return 0;
+
+   if (bo == NULL)
+      return 0;
+
+   DBG("drm_bo_unmap: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
+       bo_fake->bo.size / 1024);
+
+   bo->virtual = NULL;
+
+   return 0;
+}
+
+static int
+dri_fake_bo_validate(dri_bo *bo, unsigned int flags)
+{
+   dri_bufmgr_fake *bufmgr_fake;
+   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
+
+   /* XXX: Sanity-check whether we've already validated this one under
+    * different flags.  See drmAddValidateItem().
+    */
+
+   DBG("drm_bo_validate: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
+       bo_fake->bo.size / 1024);
+   bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   {
+      if (bo_fake->is_static) {
+	 /* Add it to the needs-fence list */
+	 bufmgr_fake->need_fence = 1;
+	 _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+	 return 0;
+      }
+
+      /* Allocate the card memory */
+      if (!bo_fake->block && !evict_and_alloc_block(bo)) {
+	 bufmgr_fake->fail = 1;
+	 _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+	 DBG("Failed to validate buf %d:%s\n", bo_fake->id, bo_fake->name);
+	 return -1;
+      }
+
+      assert(bo_fake->block);
+      assert(bo_fake->block->bo == &bo_fake->bo);
+
+      bo->offset = bo_fake->block->mem->ofs;
+
+      /* Upload the buffer contents if necessary */
+      if (bo_fake->dirty) {
+	 DBG("Upload dirty buf %d:%s, sz %d offset 0x%x\n", bo_fake->id,
+	     bo_fake->name, bo->size, bo_fake->block->mem->ofs);
+
+	 assert(!(bo_fake->flags &
+		  (BM_NO_BACKING_STORE|BM_PINNED)));
+
+	 /* Actually, should be able to just wait for a fence on the memory,
+	  * which we would be tracking when we free it.  Waiting for idle is
+	  * a sufficiently large hammer for now.
+	  */
+	 dri_bufmgr_fake_wait_idle(bufmgr_fake);
+
+	 memcpy(bo_fake->block->virtual, bo_fake->backing_store, bo->size);
+	 bo_fake->dirty = 0;
+      }
+
+      bo_fake->block->on_hardware = 1;
+      move_to_tail(&bufmgr_fake->on_hardware, bo_fake->block);
+
+      bufmgr_fake->need_fence = 1;
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+
+   return 0;
+}
+
+static dri_fence *
+dri_fake_fence_validated(dri_bufmgr *bufmgr, const char *name,
+			 GLboolean flushed)
+{
+   dri_fence_fake *fence_fake;
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
+   unsigned int cookie;
+
+   fence_fake = malloc(sizeof(*fence_fake));
+   if (!fence_fake)
+      return NULL;
+
+   fence_fake->refcount = 1;
+   fence_fake->name = name;
+   fence_fake->flushed = flushed;
+   fence_fake->fence.bufmgr = bufmgr;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   cookie = _fence_emit_internal(bufmgr_fake);
+   fence_fake->fence_cookie = cookie;
+   fence_blocks(bufmgr_fake, cookie);
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+
+   DBG("drm_fence_validated: 0x%08x cookie\n", fence_fake->fence_cookie);
+
+   return &fence_fake->fence;
+}
+
+static void
+dri_fake_fence_reference(dri_fence *fence)
+{
+   dri_fence_fake *fence_fake = (dri_fence_fake *)fence;
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)fence->bufmgr;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   ++fence_fake->refcount;
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+}
+
+static void
+dri_fake_fence_unreference(dri_fence *fence)
+{
+   dri_fence_fake *fence_fake = (dri_fence_fake *)fence;
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)fence->bufmgr;
+
+   if (!fence)
+      return;
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   if (--fence_fake->refcount == 0) {
+      _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+      free(fence);
+      return;
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+}
+
+static void
+dri_fake_fence_wait(dri_fence *fence)
+{
+   dri_fence_fake *fence_fake = (dri_fence_fake *)fence;
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)fence->bufmgr;
+
+   DBG("drm_fence_wait: 0x%08x cookie\n", fence_fake->fence_cookie);
+
+   _glthread_LOCK_MUTEX(bufmgr_fake->mutex);
+   _fence_wait_internal(bufmgr_fake, fence_fake->fence_cookie);
+   _glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
+}
+
+static void
+dri_fake_destroy(dri_bufmgr *bufmgr)
+{
+   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
+
+   _glthread_DESTROY_MUTEX(bufmgr_fake->mutex);
+   mmDestroy(bufmgr_fake->heap);
+   free(bufmgr);
+}
+
+dri_bufmgr *
+dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
+		     unsigned long size,
+		     unsigned int (*fence_emit)(void *private),
+		     int (*fence_wait)(void *private, unsigned int cookie),
+		     void *driver_priv)
+{
+   dri_bufmgr_fake *bufmgr_fake;
+
+   bufmgr_fake = calloc(1, sizeof(*bufmgr_fake));
+
+   /* Initialize allocator */
+   make_empty_list(&bufmgr_fake->fenced);
+   make_empty_list(&bufmgr_fake->on_hardware);
+   make_empty_list(&bufmgr_fake->lru);
+
+   bufmgr_fake->low_offset = low_offset;
+   bufmgr_fake->virtual = low_virtual;
+   bufmgr_fake->size = size;
+   bufmgr_fake->heap = mmInit(low_offset, size);
+
+   _glthread_INIT_MUTEX(bufmgr_fake->mutex);
+
+   /* Hook in methods */
+   bufmgr_fake->bufmgr.bo_alloc = dri_fake_bo_alloc;
+   bufmgr_fake->bufmgr.bo_alloc_static = dri_fake_bo_alloc_static;
+   bufmgr_fake->bufmgr.bo_reference = dri_fake_bo_reference;
+   bufmgr_fake->bufmgr.bo_unreference = dri_fake_bo_unreference;
+   bufmgr_fake->bufmgr.bo_map = dri_fake_bo_map;
+   bufmgr_fake->bufmgr.bo_unmap = dri_fake_bo_unmap;
+   bufmgr_fake->bufmgr.bo_validate = dri_fake_bo_validate;
+   bufmgr_fake->bufmgr.fence_validated = dri_fake_fence_validated;
+   bufmgr_fake->bufmgr.fence_wait = dri_fake_fence_wait;
+   bufmgr_fake->bufmgr.fence_reference = dri_fake_fence_reference;
+   bufmgr_fake->bufmgr.fence_unreference = dri_fake_fence_unreference;
+   bufmgr_fake->bufmgr.destroy = dri_fake_destroy;
+
+   bufmgr_fake->fence_emit = fence_emit;
+   bufmgr_fake->fence_wait = fence_wait;
+   bufmgr_fake->driver_priv = driver_priv;
+
+   return &bufmgr_fake->bufmgr;
+}
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr_ttm.c b/src/mesa/drivers/dri/common/dri_bufmgr_ttm.c
new file mode 100644
index 0000000000..235398eb87
--- /dev/null
+++ b/src/mesa/drivers/dri/common/dri_bufmgr_ttm.c
@@ -0,0 +1,469 @@
+/**************************************************************************
+ * 
+ * Copyright © 2007 Intel Corporation
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * 
+ **************************************************************************/
+/*
+ * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
+ *          Keith Whitwell <keithw-at-tungstengraphics-dot-com>
+ *	    Eric Anholt <eric@anholt.net>
+ */
+
+#include <xf86drm.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "glthread.h"
+#include "errno.h"
+#include "mtypes.h"
+#include "dri_bufmgr.h"
+#include "string.h"
+#include "imports.h"
+
+#define BUFMGR_DEBUG 0
+
+typedef struct _dri_bufmgr_ttm {
+   dri_bufmgr bufmgr;
+
+   int fd;
+   _glthread_Mutex mutex;
+   unsigned int fence_type;
+   unsigned int fence_type_flush;
+} dri_bufmgr_ttm;
+
+typedef struct _dri_bo_ttm {
+   dri_bo bo;
+
+   int refcount;		/* Protected by bufmgr->mutex */
+   drmBO drm_bo;
+   const char *name;
+   /**
+    * Note whether we are the owner of the buffer, to determine if we must
+    * drmBODestroy or drmBOUnreference to unreference the buffer.
+    */
+   GLboolean owner;
+} dri_bo_ttm;
+
+typedef struct _dri_fence_ttm
+{
+   dri_fence fence;
+
+   int refcount;		/* Protected by bufmgr->mutex */
+   const char *name;
+   drmFence drm_fence;
+} dri_fence_ttm;
+
+#if 0
+int
+driFenceSignaled(DriFenceObject * fence, unsigned type)
+{
+   int signaled;
+   int ret;
+
+   if (fence == NULL)
+      return GL_TRUE;
+
+   _glthread_LOCK_MUTEX(fence->mutex);
+   ret = drmFenceSignaled(bufmgr_ttm->fd, &fence->fence, type, &signaled);
+   _glthread_UNLOCK_MUTEX(fence->mutex);
+   BM_CKFATAL(ret);
+   return signaled;
+}
+#endif
+
+static dri_bo *
+dri_ttm_alloc(dri_bufmgr *bufmgr, const char *name,
+	      unsigned long size, unsigned int alignment,
+	      unsigned int location_mask)
+{
+   dri_bufmgr_ttm *ttm_bufmgr;
+   dri_bo_ttm *ttm_buf;
+   unsigned int pageSize = getpagesize();
+   int ret;
+   unsigned int flags, hint;
+
+   ttm_bufmgr = (dri_bufmgr_ttm *)bufmgr;
+
+   ttm_buf = malloc(sizeof(*ttm_buf));
+   if (!ttm_buf)
+      return NULL;
+
+   /* The mask argument doesn't do anything for us that we want other than
+    * determine which pool (TTM or local) the buffer is allocated into, so just
+    * pass all of the allocation class flags.
+    */
+   flags = location_mask | DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE |
+      DRM_BO_FLAG_EXE;
+   /* No hints we want to use. */
+   hint = 0;
+
+   ret = drmBOCreate(ttm_bufmgr->fd, 0, size, alignment / pageSize,
+		     NULL, drm_bo_type_dc,
+                     flags, hint, &ttm_buf->drm_bo);
+   if (ret != 0) {
+      free(ttm_buf);
+      return NULL;
+   }
+   ttm_buf->bo.size = ttm_buf->drm_bo.size;
+   ttm_buf->bo.offset = ttm_buf->drm_bo.offset;
+   ttm_buf->bo.virtual = NULL;
+   ttm_buf->bo.bufmgr = bufmgr;
+   ttm_buf->name = name;
+   ttm_buf->refcount = 1;
+   ttm_buf->owner = GL_TRUE;
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "bo_create: %p (%s)\n", &ttm_buf->bo, ttm_buf->name);
+#endif
+
+   return &ttm_buf->bo;
+}
+
+/* Our TTM backend doesn't allow creation of static buffers, as that requires
+ * privelege for the non-fake case, and the lock in the fake case where we were
+ * working around the X Server not creating buffers and passing handles to us.
+ */
+static dri_bo *
+dri_ttm_alloc_static(dri_bufmgr *bufmgr, const char *name,
+		     unsigned long offset, unsigned long size, void *virtual,
+		     unsigned int location_mask)
+{
+   return NULL;
+}
+
+/** Returns a dri_bo wrapping the given buffer object handle.
+ *
+ * This can be used when one application needs to pass a buffer object
+ * to another.
+ */
+dri_bo *
+dri_ttm_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name,
+			      unsigned int handle)
+{
+   dri_bufmgr_ttm *ttm_bufmgr;
+   dri_bo_ttm *ttm_buf;
+   int ret;
+
+   ttm_bufmgr = (dri_bufmgr_ttm *)bufmgr;
+
+   ttm_buf = malloc(sizeof(*ttm_buf));
+   if (!ttm_buf)
+      return NULL;
+
+   ret = drmBOReference(ttm_bufmgr->fd, handle, &ttm_buf->drm_bo);
+   if (ret != 0) {
+      free(ttm_buf);
+      return NULL;
+   }
+   ttm_buf->bo.size = ttm_buf->drm_bo.size;
+   ttm_buf->bo.offset = ttm_buf->drm_bo.offset;
+   ttm_buf->bo.virtual = NULL;
+   ttm_buf->bo.bufmgr = bufmgr;
+   ttm_buf->name = name;
+   ttm_buf->refcount = 1;
+   ttm_buf->owner = GL_FALSE;
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "bo_create_from_handle: %p (%s)\n", &ttm_buf->bo,
+	   ttm_buf->name);
+#endif
+
+   return &ttm_buf->bo;
+}
+
+static void
+dri_ttm_bo_reference(dri_bo *buf)
+{
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr;
+   dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf;
+
+   _glthread_LOCK_MUTEX(bufmgr_ttm->mutex);
+   ttm_buf->refcount++;
+   _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+}
+
+static void
+dri_ttm_bo_unreference(dri_bo *buf)
+{
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr;
+   dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf;
+
+   if (!buf)
+      return;
+
+   _glthread_LOCK_MUTEX(bufmgr_ttm->mutex);
+   if (--ttm_buf->refcount == 0) {
+      int ret;
+
+      /* XXX Having to use drmBODestroy as the opposite of drmBOCreate instead
+       * of simply unreferencing is madness, and leads to behaviors we may not
+       * want (making the buffer unsharable).
+       */
+      if (ttm_buf->owner)
+	 ret = drmBODestroy(bufmgr_ttm->fd, &ttm_buf->drm_bo);
+      else
+	 ret = drmBOUnReference(bufmgr_ttm->fd, &ttm_buf->drm_bo);
+      if (ret != 0) {
+	 fprintf(stderr, "drmBOUnReference failed (%s): %s\n", ttm_buf->name,
+		 strerror(-ret));
+      }
+#if BUFMGR_DEBUG
+      fprintf(stderr, "bo_unreference final: %p (%s)\n",
+	      &ttm_buf->bo, ttm_buf->name);
+#endif
+      _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+      free(buf);
+      return;
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+}
+
+static int
+dri_ttm_bo_map(dri_bo *buf, GLboolean write_enable)
+{
+   dri_bufmgr_ttm *bufmgr_ttm;
+   dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf;
+   unsigned int flags;
+
+   bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr;
+
+   flags = DRM_BO_FLAG_READ;
+   if (write_enable)
+       flags |= DRM_BO_FLAG_WRITE;
+
+   assert(buf->virtual == NULL);
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "bo_map: %p (%s)\n", &ttm_buf->bo, ttm_buf->name);
+#endif
+
+   return drmBOMap(bufmgr_ttm->fd, &ttm_buf->drm_bo, flags, 0, &buf->virtual);
+}
+
+static int
+dri_ttm_bo_unmap(dri_bo *buf)
+{
+   dri_bufmgr_ttm *bufmgr_ttm;
+   dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf;
+
+   if (buf == NULL)
+      return 0;
+
+   bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr;
+
+   assert(buf->virtual != NULL);
+
+   buf->virtual = NULL;
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "bo_unmap: %p (%s)\n", &ttm_buf->bo, ttm_buf->name);
+#endif
+
+   return drmBOUnmap(bufmgr_ttm->fd, &ttm_buf->drm_bo);
+}
+
+static int
+dri_ttm_validate(dri_bo *buf, unsigned int flags)
+{
+   dri_bufmgr_ttm *bufmgr_ttm;
+   dri_bo_ttm *ttm_buf = (dri_bo_ttm *)buf;
+   unsigned int mask;
+   int err;
+
+   /* XXX: Sanity-check whether we've already validated this one under
+    * different flags.  See drmAddValidateItem().
+    */
+
+   bufmgr_ttm = (dri_bufmgr_ttm *)buf->bufmgr;
+
+   /* Calculate the appropriate mask to pass to the DRM. There appears to be
+    * be a direct relationship to flags, so it's unnecessary to have it passed
+    * in as an argument.
+    */
+   mask = DRM_BO_MASK_MEM;
+   mask |= flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_EXE);
+
+   err = drmBOValidate(bufmgr_ttm->fd, &ttm_buf->drm_bo, 0, flags, mask, 0);
+
+   if (err == 0) {
+      /* XXX: add to fence list for sanity checking */
+   } else {
+      fprintf(stderr, "failed to validate buffer (%s): %s\n",
+	      ttm_buf->name, strerror(-err));
+   }
+
+   buf->offset = ttm_buf->drm_bo.offset;
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "bo_validate: %p (%s)\n", &ttm_buf->bo, ttm_buf->name);
+#endif
+
+   return err;
+}
+
+static dri_fence *
+dri_ttm_fence_validated(dri_bufmgr *bufmgr, const char *name,
+			GLboolean flushed)
+{
+   dri_fence_ttm *fence_ttm = malloc(sizeof(*fence_ttm));
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)bufmgr;
+   int ret;
+   unsigned int type;
+
+   if (!fence_ttm)
+      return NULL;
+
+   if (flushed)
+      type = bufmgr_ttm->fence_type_flush;
+   else
+      type = bufmgr_ttm->fence_type;
+
+   fence_ttm->refcount = 1;
+   fence_ttm->name = name;
+   fence_ttm->fence.bufmgr = bufmgr;
+   ret = drmFenceBuffers(bufmgr_ttm->fd, type, 0, &fence_ttm->drm_fence);
+   if (ret) {
+      fprintf(stderr, "failed to fence (%s): %s\n", name, strerror(-ret));
+      free(fence_ttm);
+      return NULL;
+   }
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "fence_validated: %p (%s)\n", &fence_ttm->fence,
+	   fence_ttm->name);
+#endif
+
+   return &fence_ttm->fence;
+}
+
+static void
+dri_ttm_fence_reference(dri_fence *fence)
+{
+   dri_fence_ttm *fence_ttm = (dri_fence_ttm *)fence;
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)fence->bufmgr;
+
+   _glthread_LOCK_MUTEX(bufmgr_ttm->mutex);
+   ++fence_ttm->refcount;
+   _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+}
+
+static void
+dri_ttm_fence_unreference(dri_fence *fence)
+{
+   dri_fence_ttm *fence_ttm = (dri_fence_ttm *)fence;
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)fence->bufmgr;
+
+   if (!fence)
+      return;
+
+   _glthread_LOCK_MUTEX(bufmgr_ttm->mutex);
+   if (--fence_ttm->refcount == 0) {
+      int ret;
+
+      /* XXX Having to use drmFenceDestroy as the opposite of drmFenceBuffers
+       * instead of simply unreferencing is madness, and leads to behaviors we
+       * may not want (making the fence unsharable).  This behavior by the DRM
+       * ioctls should be fixed, and drmFenceDestroy eliminated.
+       */
+      ret = drmFenceDestroy(bufmgr_ttm->fd, &fence_ttm->drm_fence);
+      if (ret != 0) {
+	 fprintf(stderr, "drmFenceDestroy failed (%s): %s\n",
+		 fence_ttm->name, strerror(-ret));
+      }
+
+      _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+      free(fence);
+      return;
+   }
+   _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+}
+
+static void
+dri_ttm_fence_wait(dri_fence *fence)
+{
+   dri_fence_ttm *fence_ttm = (dri_fence_ttm *)fence;
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)fence->bufmgr;
+   int ret;
+
+   _glthread_LOCK_MUTEX(bufmgr_ttm->mutex);
+   ret = drmFenceWait(bufmgr_ttm->fd, 0, &fence_ttm->drm_fence, 0);
+   _glthread_UNLOCK_MUTEX(bufmgr_ttm->mutex);
+   if (ret != 0) {
+      _mesa_printf("%s:%d: Error %d waiting for fence %s.\n",
+		   __FILE__, __LINE__, ret, fence_ttm->name);
+      abort();
+   }
+
+#if BUFMGR_DEBUG
+   fprintf(stderr, "fence_wait: %p (%s)\n", &fence_ttm->fence,
+	   fence_ttm->name);
+#endif
+}
+
+static void
+dri_bufmgr_ttm_destroy(dri_bufmgr *bufmgr)
+{
+   dri_bufmgr_ttm *bufmgr_ttm = (dri_bufmgr_ttm *)bufmgr;
+
+   _glthread_DESTROY_MUTEX(bufmgr_ttm->mutex);
+   free(bufmgr);
+}
+
+/**
+ * Initializes the TTM buffer manager, which uses the kernel to allocate, map,
+ * and manage map buffer objections.
+ *
+ * \param fd File descriptor of the opened DRM device.
+ * \param fence_type Driver-specific fence type used for fences with no flush.
+ * \param fence_type_flush Driver-specific fence type used for fences with a
+ *	  flush.
+ */
+dri_bufmgr *
+dri_bufmgr_ttm_init(int fd, unsigned int fence_type,
+		    unsigned int fence_type_flush)
+{
+   dri_bufmgr_ttm *bufmgr_ttm;
+
+   bufmgr_ttm = malloc(sizeof(*bufmgr_ttm));
+   bufmgr_ttm->fd = fd;
+   bufmgr_ttm->fence_type = fence_type;
+   bufmgr_ttm->fence_type_flush = fence_type_flush;
+   _glthread_INIT_MUTEX(bufmgr_ttm->mutex);
+
+   bufmgr_ttm->bufmgr.bo_alloc = dri_ttm_alloc;
+   bufmgr_ttm->bufmgr.bo_alloc_static = dri_ttm_alloc_static;
+   bufmgr_ttm->bufmgr.bo_reference = dri_ttm_bo_reference;
+   bufmgr_ttm->bufmgr.bo_unreference = dri_ttm_bo_unreference;
+   bufmgr_ttm->bufmgr.bo_map = dri_ttm_bo_map;
+   bufmgr_ttm->bufmgr.bo_unmap = dri_ttm_bo_unmap;
+   bufmgr_ttm->bufmgr.bo_validate = dri_ttm_validate;
+   bufmgr_ttm->bufmgr.fence_validated = dri_ttm_fence_validated;
+   bufmgr_ttm->bufmgr.fence_reference = dri_ttm_fence_reference;
+   bufmgr_ttm->bufmgr.fence_unreference = dri_ttm_fence_unreference;
+   bufmgr_ttm->bufmgr.fence_wait = dri_ttm_fence_wait;
+   bufmgr_ttm->bufmgr.destroy = dri_bufmgr_ttm_destroy;
+
+   return &bufmgr_ttm->bufmgr;
+}
diff --git a/src/mesa/drivers/dri/common/dri_bufpool.h b/src/mesa/drivers/dri/common/dri_bufpool.h
deleted file mode 100644
index c6fb2c3ce0..0000000000
--- a/src/mesa/drivers/dri/common/dri_bufpool.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
- * 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 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
- * THE COPYRIGHT HOLDERS, AUTHORS 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.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * 
- **************************************************************************/
-/*
- * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#ifndef _DRI_BUFPOOL_H_
-#define _DRI_BUFPOOL_H_
-
-#include <xf86drm.h>
-struct _DriFenceObject;
-
-typedef struct _DriBufferPool
-{
-   int fd;
-   int (*map) (struct _DriBufferPool * pool, void *private,
-               unsigned flags, int hint, void **virtual);
-   int (*unmap) (struct _DriBufferPool * pool, void *private);
-   int (*destroy) (struct _DriBufferPool * pool, void *private);
-   unsigned long (*offset) (struct _DriBufferPool * pool, void *private);
-   unsigned (*flags) (struct _DriBufferPool * pool, void *private);
-   unsigned long (*size) (struct _DriBufferPool * pool, void *private);
-   void *(*create) (struct _DriBufferPool * pool, unsigned long size,
-                    unsigned flags, unsigned hint, unsigned alignment);
-   int (*fence) (struct _DriBufferPool * pool, void *private,
-                 struct _DriFenceObject * fence);
-   drmBO *(*kernel) (struct _DriBufferPool * pool, void *private);
-   int (*validate) (struct _DriBufferPool * pool, void *private);
-   void *(*setstatic) (struct _DriBufferPool * pool, unsigned long offset,
-                       unsigned long size, void *virtual, unsigned flags);
-   int (*waitIdle) (struct _DriBufferPool *pool, void *private,
-		    int lazy);
-   void (*takeDown) (struct _DriBufferPool * pool);
-   void *data;
-} DriBufferPool;
-
-extern void bmError(int val, const char *file, const char *function,
-                    int line);
-#define BM_CKFATAL(val)					       \
-  do{							       \
-    int tstVal = (val);					       \
-    if (tstVal) 					       \
-      bmError(tstVal, __FILE__, __FUNCTION__, __LINE__);       \
-  } while(0);
-
-
-
-
-
-/*
- * Builtin pools.
- */
-
-/*
- * Kernel buffer objects. Size in multiples of page size. Page size aligned.
- */
-
-extern struct _DriBufferPool *driDRMPoolInit(int fd);
-extern struct _DriBufferPool *driDRMStaticPoolInit(int fd);
-
-#endif
diff --git a/src/mesa/drivers/dri/common/dri_drmpool.c b/src/mesa/drivers/dri/common/dri_drmpool.c
deleted file mode 100644
index 878a148b39..0000000000
--- a/src/mesa/drivers/dri/common/dri_drmpool.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
- * 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 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
- * THE COPYRIGHT HOLDERS, AUTHORS 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.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * 
- **************************************************************************/
-/*
- * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#include <xf86drm.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "dri_bufpool.h"
-
-/*
- * Buffer pool implementation using DRM buffer objects as DRI buffer objects.
- */
-
-static void *
-pool_create(struct _DriBufferPool *pool,
-            unsigned long size, unsigned flags, unsigned hint,
-            unsigned alignment)
-{
-   drmBO *buf = (drmBO *) malloc(sizeof(*buf));
-   int ret;
-   unsigned pageSize = getpagesize();
-
-   if (!buf)
-      return NULL;
-
-   if ((alignment > pageSize) && (alignment % pageSize)) {
-      return NULL;
-   }
-
-   ret = drmBOCreate(pool->fd, 0, size, alignment / pageSize,
-		     NULL, drm_bo_type_dc,
-                     flags, hint, buf);
-   if (ret) {
-      free(buf);
-      return NULL;
-   }
-
-   return (void *) buf;
-}
-
-static int
-pool_destroy(struct _DriBufferPool *pool, void *private)
-{
-   int ret;
-   drmBO *buf = (drmBO *) private;
-   ret = drmBODestroy(pool->fd, buf);
-   free(buf);
-   return ret;
-}
-
-static int
-pool_map(struct _DriBufferPool *pool, void *private, unsigned flags,
-         int hint, void **virtual)
-{
-   drmBO *buf = (drmBO *) private;
-
-   return drmBOMap(pool->fd, buf, flags, hint, virtual);
-}
-
-static int
-pool_unmap(struct _DriBufferPool *pool, void *private)
-{
-   drmBO *buf = (drmBO *) private;
-   return drmBOUnmap(pool->fd, buf);
-}
-
-static unsigned long
-pool_offset(struct _DriBufferPool *pool, void *private)
-{
-   drmBO *buf = (drmBO *) private;
-   return buf->offset;
-}
-
-static unsigned
-pool_flags(struct _DriBufferPool *pool, void *private)
-{
-   drmBO *buf = (drmBO *) private;
-   return buf->flags;
-}
-
-
-static unsigned long
-pool_size(struct _DriBufferPool *pool, void *private)
-{
-   drmBO *buf = (drmBO *) private;
-   return buf->size;
-}
-
-static int
-pool_fence(struct _DriBufferPool *pool, void *private,
-           struct _DriFenceObject *fence)
-{
-   /*
-    * Noop. The kernel handles all fencing.
-    */
-
-   return 0;
-}
-
-static drmBO *
-pool_kernel(struct _DriBufferPool *pool, void *private)
-{
-   return (drmBO *) private;
-}
-
-static int
-pool_waitIdle(struct _DriBufferPool *pool, void *private, int lazy)
-{
-   drmBO *buf = (drmBO *) private;
-   return drmBOWaitIdle(pool->fd, buf, (lazy) ? DRM_BO_HINT_WAIT_LAZY:0);
-}
-
-    
-static void
-pool_takedown(struct _DriBufferPool *pool)
-{
-   free(pool);
-}
-
-
-struct _DriBufferPool *
-driDRMPoolInit(int fd)
-{
-   struct _DriBufferPool *pool;
-
-   pool = (struct _DriBufferPool *) malloc(sizeof(*pool));
-
-   if (!pool)
-      return NULL;
-
-   pool->fd = fd;
-   pool->map = &pool_map;
-   pool->unmap = &pool_unmap;
-   pool->destroy = &pool_destroy;
-   pool->offset = &pool_offset;
-   pool->flags = &pool_flags;
-   pool->size = &pool_size;
-   pool->create = &pool_create;
-   pool->fence = &pool_fence;
-   pool->kernel = &pool_kernel;
-   pool->validate = NULL;
-   pool->setstatic = NULL;
-   pool->waitIdle = &pool_waitIdle;
-   pool->takeDown = &pool_takedown;
-   pool->data = NULL;
-   return pool;
-}
-
-
-static void *
-pool_setstatic(struct _DriBufferPool *pool, unsigned long offset,
-               unsigned long size, void *virtual, unsigned flags)
-{
-   drmBO *buf = (drmBO *) malloc(sizeof(*buf));
-   int ret;
-
-   if (!buf)
-      return NULL;
-
-   ret = drmBOCreate(pool->fd, offset, size, 0, NULL, drm_bo_type_fake,
-                     flags, DRM_BO_HINT_DONT_FENCE, buf);
-
-   if (ret) {
-      free(buf);
-      return NULL;
-   }
-
-   buf->virtual = virtual;
-
-   return (void *) buf;
-}
-
-
-struct _DriBufferPool *
-driDRMStaticPoolInit(int fd)
-{
-   struct _DriBufferPool *pool;
-
-   pool = (struct _DriBufferPool *) malloc(sizeof(*pool));
-
-   if (!pool)
-      return NULL;
-
-   pool->fd = fd;
-   pool->map = &pool_map;
-   pool->unmap = &pool_unmap;
-   pool->destroy = &pool_destroy;
-   pool->offset = &pool_offset;
-   pool->flags = &pool_flags;
-   pool->size = &pool_size;
-   pool->create = NULL;
-   pool->fence = &pool_fence;
-   pool->kernel = &pool_kernel;
-   pool->validate = NULL;
-   pool->setstatic = &pool_setstatic;
-   pool->waitIdle = &pool_waitIdle;
-   pool->takeDown = &pool_takedown;
-   pool->data = NULL;
-   return pool;
-}
diff --git a/src/mesa/drivers/dri/common/spantmp2.h b/src/mesa/drivers/dri/common/spantmp2.h
index 50f3cf5581..53f5f846a0 100644
--- a/src/mesa/drivers/dri/common/spantmp2.h
+++ b/src/mesa/drivers/dri/common/spantmp2.h
@@ -114,7 +114,7 @@
     do {                                                                \
         GLuint p = *(volatile GLuint *) GET_PTR(_x, _y);                \
        __asm__ __volatile__( "bswap	%0; rorl $8, %0"                \
-				: "=r" (p) : "r" (p) );                 \
+				: "=r" (p) : "0" (p) );                 \
        ((GLuint *)rgba)[0] = p;                                         \
     } while (0)
 # elif defined( MESA_BIG_ENDIAN )