Hardware accelerated stencil buffers. Conformant, but broken? Disabled bymesa-3-5-20010323-freeze

    default for now.

18 files changed, 7872 insertions, 70 deletions

diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c
new file mode 100644
index 00000000..63cfb0d4
--- /dev/null
+++ b/linux-core/drm_bufs.c
@@ -0,0 +1,829 @@
+/* drm_bufs.h -- Generic buffer template -*- linux-c -*-
+ * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include <linux/vmalloc.h>
+#include "drmP.h"
+
+#ifndef __HAVE_PCI_DMA
+#define __HAVE_PCI_DMA		0
+#endif
+
+#ifndef DRIVER_BUF_PRIV_T
+#define DRIVER_BUF_PRIV_T		u32
+#endif
+#ifndef DRIVER_AGP_BUFFERS_MAP
+#if __HAVE_AGP && __HAVE_DMA
+#error "You must define DRIVER_AGP_BUFFERS_MAP()"
+#else
+#define DRIVER_AGP_BUFFERS_MAP( dev )	NULL
+#endif
+#endif
+
+/*
+ * Compute order.  Can be made faster.
+ */
+int DRM(order)( unsigned long size )
+{
+	int order;
+	unsigned long tmp;
+
+	for ( order = 0, tmp = size ; tmp >>= 1 ; ++order );
+
+	if ( size & ~(1 << order) )
+		++order;
+
+	return order;
+}
+
+int DRM(addmap)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_map_t *map;
+	drm_map_list_t *list;
+
+	if ( !(filp->f_mode & 3) ) return -EACCES; /* Require read/write */
+
+	map = DRM(alloc)( sizeof(*map), DRM_MEM_MAPS );
+	if ( !map )
+		return -ENOMEM;
+
+	if ( copy_from_user( map, (drm_map_t *)arg, sizeof(*map) ) ) {
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EFAULT;
+	}
+
+	/* Only allow shared memory to be removable since we only keep enough
+	 * book keeping information about shared memory to allow for removal
+	 * when processes fork.
+	 */
+	if ( (map->flags & _DRM_REMOVABLE) && map->type != _DRM_SHM ) {
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EINVAL;
+	}
+	DRM_DEBUG( "offset = 0x%08lx, size = 0x%08lx, type = %d\n",
+		   map->offset, map->size, map->type );
+	if ( (map->offset & (~PAGE_MASK)) || (map->size & (~PAGE_MASK)) ) {
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EINVAL;
+	}
+	map->mtrr   = -1;
+	map->handle = 0;
+
+	switch ( map->type ) {
+	case _DRM_REGISTERS:
+	case _DRM_FRAME_BUFFER:
+#ifndef __sparc__
+		if ( map->offset + map->size < map->offset ||
+		     map->offset < virt_to_phys(high_memory) ) {
+			DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+			return -EINVAL;
+		}
+#endif
+#if __REALLY_HAVE_MTRR
+		if ( map->type == _DRM_FRAME_BUFFER ||
+		     (map->flags & _DRM_WRITE_COMBINING) ) {
+			map->mtrr = mtrr_add( map->offset, map->size,
+					      MTRR_TYPE_WRCOMB, 1 );
+		}
+#endif
+		map->handle = DRM(ioremap)( map->offset, map->size );
+		break;
+
+	case _DRM_SHM:
+		map->handle = vmalloc_32(map->size);
+		DRM_DEBUG( "%ld %d %p\n",
+			   map->size, DRM(order)( map->size ), map->handle );
+		if ( !map->handle ) {
+			DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+			return -ENOMEM;
+		}
+		map->offset = (unsigned long)map->handle;
+		if ( map->flags & _DRM_CONTAINS_LOCK ) {
+			dev->lock.hw_lock = map->handle; /* Pointer to lock */
+		}
+		break;
+#if __REALLY_HAVE_AGP
+	case _DRM_AGP:
+		map->offset = map->offset + dev->agp->base;
+		map->mtrr   = dev->agp->agp_mtrr; /* for getmap */
+		break;
+#endif
+	default:
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EINVAL;
+	}
+
+	list = DRM(alloc)(sizeof(*list), DRM_MEM_MAPS);
+	if(!list) {
+		DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+		return -EINVAL;
+	}
+	memset(list, 0, sizeof(*list));
+	list->map = map;
+
+	down(&dev->struct_sem);
+	list_add(&list->head, &dev->maplist->head);
+ 	up(&dev->struct_sem);
+
+	if ( copy_to_user( (drm_map_t *)arg, map, sizeof(*map) ) )
+		return -EFAULT;
+	if ( map->type != _DRM_SHM ) {
+		if ( copy_to_user( &((drm_map_t *)arg)->handle,
+				   &map->offset,
+				   sizeof(map->offset) ) )
+			return -EFAULT;
+	}
+	return 0;
+}
+
+
+/* Remove a map private from list and deallocate resources if the mapping
+ * isn't in use.
+ */
+
+int DRM(rmmap)(struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	struct list_head *list;
+	drm_map_list_t *r_list;
+	drm_vma_entry_t *pt, *prev;
+	drm_map_t *map;
+	drm_map_t request;
+	int found_maps = 0;
+
+	if (copy_from_user(&request, (drm_map_t *)arg,
+			   sizeof(request))) {
+		return -EFAULT;
+	}
+
+	down(&dev->struct_sem);
+	list = &dev->maplist->head;
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *) list;
+
+		if(r_list->map &&
+		   r_list->map->handle == request.handle &&
+		   r_list->map->flags & _DRM_REMOVABLE) break;
+	}
+
+	/* List has wrapped around to the head pointer, or its empty we didn't
+	 * find anything.
+	 */
+	if(list == (&dev->maplist->head)) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	map = r_list->map;
+	list_del(list);
+	DRM(free)(list, sizeof(*list), DRM_MEM_MAPS);
+
+	for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+#if LINUX_VERSION_CODE >= 0x020300
+		if (pt->vma->vm_private_data == map) found_maps++;
+#else
+		if (pt->vma->vm_pte == map) found_maps++;
+#endif
+	}
+
+	if(!found_maps) {
+		switch (map->type) {
+		case _DRM_REGISTERS:
+		case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+			if (map->mtrr >= 0) {
+				int retcode;
+				retcode = mtrr_del(map->mtrr,
+						   map->offset,
+						   map->size);
+				DRM_DEBUG("mtrr_del = %d\n", retcode);
+			}
+#endif
+			DRM(ioremapfree)(map->handle, map->size);
+			break;
+		case _DRM_SHM:
+			vfree(map->handle);
+			break;
+		case _DRM_AGP:
+			break;
+		}
+		DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+	}
+	up(&dev->struct_sem);
+	return 0;
+}
+
+#if __HAVE_DMA
+
+#if __REALLY_HAVE_AGP
+int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
+		      unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_desc_t request;
+	drm_buf_entry_t *entry;
+	drm_buf_t *buf;
+	unsigned long offset;
+	unsigned long agp_offset;
+	int count;
+	int order;
+	int size;
+	int alignment;
+	int page_order;
+	int total;
+	int byte_count;
+	int i;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	count = request.count;
+	order = DRM(order)( request.size );
+	size = 1 << order;
+
+	alignment  = (request.flags & _DRM_PAGE_ALIGN)
+		? PAGE_ALIGN(size) : size;
+	page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
+	total = PAGE_SIZE << page_order;
+
+	byte_count = 0;
+	agp_offset = dev->agp->base + request.agp_start;
+
+	DRM_DEBUG( "count:      %d\n",  count );
+	DRM_DEBUG( "order:      %d\n",  order );
+	DRM_DEBUG( "size:       %d\n",  size );
+	DRM_DEBUG( "agp_offset: %ld\n", agp_offset );
+	DRM_DEBUG( "alignment:  %d\n",  alignment );
+	DRM_DEBUG( "page_order: %d\n",  page_order );
+	DRM_DEBUG( "total:      %d\n",  total );
+
+	if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
+	if ( dev->queue_count ) return -EBUSY; /* Not while in use */
+
+	spin_lock( &dev->count_lock );
+	if ( dev->buf_use ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	atomic_inc( &dev->buf_alloc );
+	spin_unlock( &dev->count_lock );
+
+	down( &dev->struct_sem );
+	entry = &dma->bufs[order];
+	if ( entry->buf_count ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM; /* May only call once for each order */
+	}
+
+	entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist),
+				    DRM_MEM_BUFS );
+	if ( !entry->buflist ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;
+	}
+	memset( entry->buflist, 0, count * sizeof(*entry->buflist) );
+
+	entry->buf_size = size;
+	entry->page_order = page_order;
+
+	offset = 0;
+
+	while ( entry->buf_count < count ) {
+		buf          = &entry->buflist[entry->buf_count];
+		buf->idx     = dma->buf_count + entry->buf_count;
+		buf->total   = alignment;
+		buf->order   = order;
+		buf->used    = 0;
+
+		buf->offset  = (dma->byte_count + offset);
+		buf->bus_address = agp_offset + offset;
+		buf->address = (void *)(agp_offset + offset);
+		buf->next    = NULL;
+		buf->waiting = 0;
+		buf->pending = 0;
+		init_waitqueue_head( &buf->dma_wait );
+		buf->pid     = 0;
+
+		buf->dev_priv_size = sizeof(DRIVER_BUF_PRIV_T);
+		buf->dev_private = DRM(alloc)( sizeof(DRIVER_BUF_PRIV_T),
+					       DRM_MEM_BUFS );
+		memset( buf->dev_private, 0, buf->dev_priv_size );
+
+#if __HAVE_DMA_HISTOGRAM
+		buf->time_queued = 0;
+		buf->time_dispatched = 0;
+		buf->time_completed = 0;
+		buf->time_freed = 0;
+#endif
+		DRM_DEBUG( "buffer %d @ %p\n",
+			   entry->buf_count, buf->address );
+
+		offset += alignment;
+		entry->buf_count++;
+		byte_count += PAGE_SIZE << page_order;
+	}
+
+	DRM_DEBUG( "byte_count: %d\n", byte_count );
+
+	dma->buflist = DRM(realloc)( dma->buflist,
+				     dma->buf_count * sizeof(*dma->buflist),
+				     (dma->buf_count + entry->buf_count)
+				     * sizeof(*dma->buflist),
+				     DRM_MEM_BUFS );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		dma->buflist[i + dma->buf_count] = &entry->buflist[i];
+	}
+
+	dma->buf_count += entry->buf_count;
+	dma->byte_count += byte_count;
+
+	DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
+	DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
+
+#if __HAVE_DMA_FREELIST
+	DRM(freelist_create)( &entry->freelist, entry->buf_count );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
+	}
+#endif
+	up( &dev->struct_sem );
+
+	request.count = entry->buf_count;
+	request.size = size;
+
+	if ( copy_to_user( (drm_buf_desc_t *)arg, &request, sizeof(request) ) )
+		return -EFAULT;
+
+	dma->flags = _DRM_DMA_USE_AGP;
+
+	atomic_dec( &dev->buf_alloc );
+	return 0;
+}
+#endif /* __REALLY_HAVE_AGP */
+
+#if __HAVE_PCI_DMA
+int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
+		      unsigned int cmd, unsigned long arg )
+{
+   	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_desc_t request;
+	int count;
+	int order;
+	int size;
+	int total;
+	int page_order;
+	drm_buf_entry_t *entry;
+	unsigned long page;
+	drm_buf_t *buf;
+	int alignment;
+	unsigned long offset;
+	int i;
+	int byte_count;
+	int page_count;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	count = request.count;
+	order = DRM(order)( request.size );
+	size = 1 << order;
+
+	DRM_DEBUG( "count=%d, size=%d (%d), order=%d, queue_count=%d\n",
+		   request.count, request.size, size,
+		   order, dev->queue_count );
+
+	if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
+	if ( dev->queue_count ) return -EBUSY; /* Not while in use */
+
+	alignment = (request.flags & _DRM_PAGE_ALIGN)
+		? PAGE_ALIGN(size) : size;
+	page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
+	total = PAGE_SIZE << page_order;
+
+	spin_lock( &dev->count_lock );
+	if ( dev->buf_use ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	atomic_inc( &dev->buf_alloc );
+	spin_unlock( &dev->count_lock );
+
+	down( &dev->struct_sem );
+	entry = &dma->bufs[order];
+	if ( entry->buf_count ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;	/* May only call once for each order */
+	}
+
+	entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist),
+				    DRM_MEM_BUFS );
+	if ( !entry->buflist ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;
+	}
+	memset( entry->buflist, 0, count * sizeof(*entry->buflist) );
+
+	entry->seglist = DRM(alloc)( count * sizeof(*entry->seglist),
+				    DRM_MEM_SEGS );
+	if ( !entry->seglist ) {
+		DRM(free)( entry->buflist,
+			  count * sizeof(*entry->buflist),
+			  DRM_MEM_BUFS );
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;
+	}
+	memset( entry->seglist, 0, count * sizeof(*entry->seglist) );
+
+	dma->pagelist = DRM(realloc)( dma->pagelist,
+				      dma->page_count * sizeof(*dma->pagelist),
+				      (dma->page_count + (count << page_order))
+				      * sizeof(*dma->pagelist),
+				      DRM_MEM_PAGES );
+	DRM_DEBUG( "pagelist: %d entries\n",
+		   dma->page_count + (count << page_order) );
+
+	entry->buf_size	= size;
+	entry->page_order = page_order;
+	byte_count = 0;
+	page_count = 0;
+
+	while ( entry->buf_count < count ) {
+		page = DRM(alloc_pages)( page_order, DRM_MEM_DMA );
+		if ( !page ) break;
+		entry->seglist[entry->seg_count++] = page;
+		for ( i = 0 ; i < (1 << page_order) ; i++ ) {
+			DRM_DEBUG( "page %d @ 0x%08lx\n",
+				   dma->page_count + page_count,
+				   page + PAGE_SIZE * i );
+			dma->pagelist[dma->page_count + page_count++]
+				= page + PAGE_SIZE * i;
+		}
+		for ( offset = 0 ;
+		      offset + size <= total && entry->buf_count < count ;
+		      offset += alignment, ++entry->buf_count ) {
+			buf	     = &entry->buflist[entry->buf_count];
+			buf->idx     = dma->buf_count + entry->buf_count;
+			buf->total   = alignment;
+			buf->order   = order;
+			buf->used    = 0;
+			buf->offset  = (dma->byte_count + byte_count + offset);
+			buf->address = (void *)(page + offset);
+			buf->next    = NULL;
+			buf->waiting = 0;
+			buf->pending = 0;
+			init_waitqueue_head( &buf->dma_wait );
+			buf->pid     = 0;
+#if __HAVE_DMA_HISTOGRAM
+			buf->time_queued     = 0;
+			buf->time_dispatched = 0;
+			buf->time_completed  = 0;
+			buf->time_freed      = 0;
+#endif
+			DRM_DEBUG( "buffer %d @ %p\n",
+				   entry->buf_count, buf->address );
+		}
+		byte_count += PAGE_SIZE << page_order;
+	}
+
+	dma->buflist = DRM(realloc)( dma->buflist,
+				     dma->buf_count * sizeof(*dma->buflist),
+				     (dma->buf_count + entry->buf_count)
+				     * sizeof(*dma->buflist),
+				     DRM_MEM_BUFS );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		dma->buflist[i + dma->buf_count] = &entry->buflist[i];
+	}
+
+	dma->buf_count += entry->buf_count;
+	dma->seg_count += entry->seg_count;
+	dma->page_count += entry->seg_count << page_order;
+	dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
+
+#if __HAVE_DMA_FREELIST
+	DRM(freelist_create)( &entry->freelist, entry->buf_count );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
+	}
+#endif
+	up( &dev->struct_sem );
+
+	request.count = entry->buf_count;
+	request.size = size;
+
+	if ( copy_to_user( (drm_buf_desc_t *)arg, &request, sizeof(request) ) )
+		return -EFAULT;
+
+	atomic_dec( &dev->buf_alloc );
+	return 0;
+}
+#endif /* __HAVE_PCI_DMA */
+
+int DRM(addbufs)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_buf_desc_t request;
+
+	if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+#if __REALLY_HAVE_AGP
+	if ( request.flags & _DRM_AGP_BUFFER )
+		return DRM(addbufs_agp)( inode, filp, cmd, arg );
+	else
+#endif
+#if __HAVE_PCI_DMA
+		return DRM(addbufs_pci)( inode, filp, cmd, arg );
+#else
+		return -EINVAL;
+#endif
+}
+
+int DRM(infobufs)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_info_t request;
+	int i;
+	int count;
+
+	if ( !dma ) return -EINVAL;
+
+	spin_lock( &dev->count_lock );
+	if ( atomic_read( &dev->buf_alloc ) ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	++dev->buf_use;		/* Can't allocate more after this call */
+	spin_unlock( &dev->count_lock );
+
+	if ( copy_from_user( &request,
+			     (drm_buf_info_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
+		if ( dma->bufs[i].buf_count ) ++count;
+	}
+
+	DRM_DEBUG( "count = %d\n", count );
+
+	if ( request.count >= count ) {
+		for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
+			if ( dma->bufs[i].buf_count ) {
+				drm_buf_desc_t *to = &request.list[count];
+				drm_buf_entry_t *from = &dma->bufs[i];
+				drm_freelist_t *list = &dma->bufs[i].freelist;
+				if ( copy_to_user( &to->count,
+						   &from->buf_count,
+						   sizeof(from->buf_count) ) ||
+				     copy_to_user( &to->size,
+						   &from->buf_size,
+						   sizeof(from->buf_size) ) ||
+				     copy_to_user( &to->low_mark,
+						   &list->low_mark,
+						   sizeof(list->low_mark) ) ||
+				     copy_to_user( &to->high_mark,
+						   &list->high_mark,
+						   sizeof(list->high_mark) ) )
+					return -EFAULT;
+
+				DRM_DEBUG( "%d %d %d %d %d\n",
+					   i,
+					   dma->bufs[i].buf_count,
+					   dma->bufs[i].buf_size,
+					   dma->bufs[i].freelist.low_mark,
+					   dma->bufs[i].freelist.high_mark );
+				++count;
+			}
+		}
+	}
+	request.count = count;
+
+	if ( copy_to_user( (drm_buf_info_t *)arg,
+			   &request,
+			   sizeof(request) ) )
+		return -EFAULT;
+
+	return 0;
+}
+
+int DRM(markbufs)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_desc_t request;
+	int order;
+	drm_buf_entry_t *entry;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request,
+			     (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d, %d, %d\n",
+		   request.size, request.low_mark, request.high_mark );
+	order = DRM(order)( request.size );
+	if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
+	entry = &dma->bufs[order];
+
+	if ( request.low_mark < 0 || request.low_mark > entry->buf_count )
+		return -EINVAL;
+	if ( request.high_mark < 0 || request.high_mark > entry->buf_count )
+		return -EINVAL;
+
+	entry->freelist.low_mark  = request.low_mark;
+	entry->freelist.high_mark = request.high_mark;
+
+	return 0;
+}
+
+int DRM(freebufs)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_free_t request;
+	int i;
+	int idx;
+	drm_buf_t *buf;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request,
+			     (drm_buf_free_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", request.count );
+	for ( i = 0 ; i < request.count ; i++ ) {
+		if ( copy_from_user( &idx,
+				     &request.list[i],
+				     sizeof(idx) ) )
+			return -EFAULT;
+		if ( idx < 0 || idx >= dma->buf_count ) {
+			DRM_ERROR( "Index %d (of %d max)\n",
+				   idx, dma->buf_count - 1 );
+			return -EINVAL;
+		}
+		buf = dma->buflist[idx];
+		if ( buf->pid != current->pid ) {
+			DRM_ERROR( "Process %d freeing buffer owned by %d\n",
+				   current->pid, buf->pid );
+			return -EINVAL;
+		}
+		DRM(free_buffer)( dev, buf );
+	}
+
+	return 0;
+}
+
+int DRM(mapbufs)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	int retcode = 0;
+	const int zero = 0;
+	unsigned long virtual;
+	unsigned long address;
+	drm_buf_map_t request;
+	int i;
+
+	if ( !dma ) return -EINVAL;
+
+	spin_lock( &dev->count_lock );
+	if ( atomic_read( &dev->buf_alloc ) ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	dev->buf_use++;		/* Can't allocate more after this call */
+	spin_unlock( &dev->count_lock );
+
+	if ( copy_from_user( &request, (drm_buf_map_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	if ( request.count >= dma->buf_count ) {
+		if ( __HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP) ) {
+			drm_map_t *map = DRIVER_AGP_BUFFERS_MAP( dev );
+
+			if ( !map ) {
+				retcode = -EINVAL;
+				goto done;
+			}
+
+			down( &current->mm->mmap_sem );
+			virtual = do_mmap( filp, 0, map->size,
+					   PROT_READ | PROT_WRITE,
+					   MAP_SHARED,
+					   (unsigned long)map->offset );
+			up( &current->mm->mmap_sem );
+		} else {
+			down( &current->mm->mmap_sem );
+			virtual = do_mmap( filp, 0, dma->byte_count,
+					   PROT_READ | PROT_WRITE,
+					   MAP_SHARED, 0 );
+			up( &current->mm->mmap_sem );
+		}
+		if ( virtual > -1024UL ) {
+			/* Real error */
+			retcode = (signed long)virtual;
+			goto done;
+		}
+		request.virtual = (void *)virtual;
+
+		for ( i = 0 ; i < dma->buf_count ; i++ ) {
+			if ( copy_to_user( &request.list[i].idx,
+					   &dma->buflist[i]->idx,
+					   sizeof(request.list[0].idx) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+			if ( copy_to_user( &request.list[i].total,
+					   &dma->buflist[i]->total,
+					   sizeof(request.list[0].total) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+			if ( copy_to_user( &request.list[i].used,
+					   &zero,
+					   sizeof(zero) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+			address = virtual + dma->buflist[i]->offset; /* *** */
+			if ( copy_to_user( &request.list[i].address,
+					   &address,
+					   sizeof(address) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+		}
+	}
+ done:
+	request.count = dma->buf_count;
+	DRM_DEBUG( "%d buffers, retcode = %d\n", request.count, retcode );
+
+	if ( copy_to_user( (drm_buf_map_t *)arg, &request, sizeof(request) ) )
+		return -EFAULT;
+
+	return retcode;
+}
+
+#endif /* __HAVE_DMA */
diff --git a/linux-core/drm_context.c b/linux-core/drm_context.c
new file mode 100644
index 00000000..4ac896ef
--- /dev/null
+++ b/linux-core/drm_context.c
@@ -0,0 +1,760 @@
+/* drm_context.h -- IOCTLs for generic contexts -*- linux-c -*-
+ * Created: Fri Nov 24 18:31:37 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+#if __HAVE_CTX_BITMAP
+
+/* ================================================================
+ * Context bitmap support
+ */
+
+void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle )
+{
+	if ( ctx_handle < 0 ) goto failed;
+	if ( !dev->ctx_bitmap ) goto failed;
+
+	if ( ctx_handle < DRM_MAX_CTXBITMAP ) {
+		down(&dev->struct_sem);
+		clear_bit( ctx_handle, dev->ctx_bitmap );
+		dev->context_sareas[ctx_handle] = NULL;
+		up(&dev->struct_sem);
+		return;
+	}
+failed:
+       	DRM_ERROR( "Attempt to free invalid context handle: %d\n",
+		   ctx_handle );
+       	return;
+}
+
+int DRM(ctxbitmap_next)( drm_device_t *dev )
+{
+	int bit;
+
+	if(!dev->ctx_bitmap) return -1;
+
+	down(&dev->struct_sem);
+	bit = find_first_zero_bit( dev->ctx_bitmap, DRM_MAX_CTXBITMAP );
+	if ( bit < DRM_MAX_CTXBITMAP ) {
+		set_bit( bit, dev->ctx_bitmap );
+	   	DRM_DEBUG( "drm_ctxbitmap_next bit : %d\n", bit );
+		if((bit+1) > dev->max_context) {
+			dev->max_context = (bit+1);
+			if(dev->context_sareas) {
+				dev->context_sareas = DRM(realloc)(
+					dev->context_sareas,
+					(dev->max_context - 1) * 
+					sizeof(*dev->context_sareas),
+					dev->max_context * 
+					sizeof(*dev->context_sareas),
+					DRM_MEM_MAPS);
+				dev->context_sareas[bit] = NULL;
+			} else {
+				/* max_context == 1 at this point */
+				dev->context_sareas = DRM(alloc)(
+						dev->max_context * 
+						sizeof(*dev->context_sareas),
+						DRM_MEM_MAPS);
+				dev->context_sareas[bit] = NULL;
+			}
+		}
+		up(&dev->struct_sem);
+		return bit;
+	}
+	up(&dev->struct_sem);
+	return -1;
+}
+
+int DRM(ctxbitmap_init)( drm_device_t *dev )
+{
+	int i;
+   	int temp;
+
+	down(&dev->struct_sem);
+	dev->ctx_bitmap = (unsigned long *) DRM(alloc)( PAGE_SIZE,
+							DRM_MEM_CTXBITMAP );
+	if ( dev->ctx_bitmap == NULL ) {
+		up(&dev->struct_sem);
+		return -ENOMEM;
+	}
+	memset( (void *)dev->ctx_bitmap, 0, PAGE_SIZE );
+	dev->context_sareas = NULL;
+	dev->max_context = -1;
+	up(&dev->struct_sem);
+
+	for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
+		temp = DRM(ctxbitmap_next)( dev );
+	   	DRM_DEBUG( "drm_ctxbitmap_init : %d\n", temp );
+	}
+
+	return 0;
+}
+
+void DRM(ctxbitmap_cleanup)( drm_device_t *dev )
+{
+	down(&dev->struct_sem);
+	if( dev->context_sareas ) DRM(free)( dev->context_sareas,
+					     sizeof(*dev->context_sareas) * 
+					     dev->max_context,
+					     DRM_MEM_MAPS );
+	DRM(free)( (void *)dev->ctx_bitmap, PAGE_SIZE, DRM_MEM_CTXBITMAP );
+	up(&dev->struct_sem);
+}
+
+/* ================================================================
+ * Per Context SAREA Support
+ */
+
+int DRM(getsareactx)(struct inode *inode, struct file *filp,
+		     unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_priv_map_t request;
+	drm_map_t *map;
+
+	if (copy_from_user(&request,
+			   (drm_ctx_priv_map_t *)arg,
+			   sizeof(request)))
+		return -EFAULT;
+
+	down(&dev->struct_sem);
+	if ((int)request.ctx_id >= dev->max_context) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+
+	map = dev->context_sareas[request.ctx_id];
+	up(&dev->struct_sem);
+
+	request.handle = map->handle;
+	if (copy_to_user((drm_ctx_priv_map_t *)arg, &request, sizeof(request)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(setsareactx)(struct inode *inode, struct file *filp,
+		     unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_priv_map_t request;
+	drm_map_t *map = NULL;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+
+	if (copy_from_user(&request,
+			   (drm_ctx_priv_map_t *)arg,
+			   sizeof(request)))
+		return -EFAULT;
+
+	down(&dev->struct_sem);
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *)list;
+		if(r_list->map &&
+		   r_list->map->handle == request.handle) break;
+	}
+	if (list == &(dev->maplist->head)) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	map = r_list->map;
+	up(&dev->struct_sem);
+
+	if (!map) return -EINVAL;
+
+	down(&dev->struct_sem);
+	if ((int)request.ctx_id >= dev->max_context) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	dev->context_sareas[request.ctx_id] = map;
+	up(&dev->struct_sem);
+	return 0;
+}
+
+/* ================================================================
+ * The actual DRM context handling routines
+ */
+
+int DRM(context_switch)( drm_device_t *dev, int old, int new )
+{
+        char buf[64];
+
+        if ( test_and_set_bit( 0, &dev->context_flag ) ) {
+                DRM_ERROR( "Reentering -- FIXME\n" );
+                return -EBUSY;
+        }
+
+#if __HAVE_DMA_HISTOGRAM
+        dev->ctx_start = get_cycles();
+#endif
+
+        DRM_DEBUG( "Context switch from %d to %d\n", old, new );
+
+        if ( new == dev->last_context ) {
+                clear_bit( 0, &dev->context_flag );
+                return 0;
+        }
+
+        if ( DRM(flags) & DRM_FLAG_NOCTX ) {
+                DRM(context_switch_complete)( dev, new );
+        } else {
+                sprintf( buf, "C %d %d\n", old, new );
+                DRM(write_string)( dev, buf );
+        }
+
+        return 0;
+}
+
+int DRM(context_switch_complete)( drm_device_t *dev, int new )
+{
+        dev->last_context = new;  /* PRE/POST: This is the _only_ writer. */
+        dev->last_switch  = jiffies;
+
+        if ( !_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ) {
+                DRM_ERROR( "Lock isn't held after context switch\n" );
+        }
+
+				/* If a context switch is ever initiated
+                                   when the kernel holds the lock, release
+                                   that lock here. */
+#if __HAVE_DMA_HISTOGRAM
+        atomic_inc( &dev->histo.ctx[DRM(histogram_slot)(get_cycles()
+							- dev->ctx_start)] );
+
+#endif
+        clear_bit( 0, &dev->context_flag );
+        wake_up( &dev->context_wait );
+
+        return 0;
+}
+
+int DRM(resctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_ctx_res_t res;
+	drm_ctx_t ctx;
+	int i;
+
+	if ( copy_from_user( &res, (drm_ctx_res_t *)arg, sizeof(res) ) )
+		return -EFAULT;
+
+	if ( res.count >= DRM_RESERVED_CONTEXTS ) {
+		memset( &ctx, 0, sizeof(ctx) );
+		for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
+			ctx.handle = i;
+			if ( copy_to_user( &res.contexts[i],
+					   &i, sizeof(i) ) )
+				return -EFAULT;
+		}
+	}
+	res.count = DRM_RESERVED_CONTEXTS;
+
+	if ( copy_to_user( (drm_ctx_res_t *)arg, &res, sizeof(res) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(addctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	ctx.handle = DRM(ctxbitmap_next)( dev );
+	if ( ctx.handle == DRM_KERNEL_CONTEXT ) {
+				/* Skip kernel's context and get a new one. */
+		ctx.handle = DRM(ctxbitmap_next)( dev );
+	}
+	DRM_DEBUG( "%d\n", ctx.handle );
+	if ( ctx.handle == -1 ) {
+		DRM_DEBUG( "Not enough free contexts.\n" );
+				/* Should this return -EBUSY instead? */
+		return -ENOMEM;
+	}
+
+	if ( copy_to_user( (drm_ctx_t *)arg, &ctx, sizeof(ctx) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(modctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	/* This does nothing */
+	return 0;
+}
+
+int DRM(getctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t*)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	/* This is 0, because we don't handle any context flags */
+	ctx.flags = 0;
+
+	if ( copy_to_user( (drm_ctx_t*)arg, &ctx, sizeof(ctx) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(switchctx)( struct inode *inode, struct file *filp,
+		    unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", ctx.handle );
+	return DRM(context_switch)( dev, dev->last_context, ctx.handle );
+}
+
+int DRM(newctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", ctx.handle );
+	DRM(context_switch_complete)( dev, ctx.handle );
+
+	return 0;
+}
+
+int DRM(rmctx)( struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", ctx.handle );
+	if ( ctx.handle == DRM_KERNEL_CONTEXT + 1 ) {
+		priv->remove_auth_on_close = 1;
+	}
+	if ( ctx.handle != DRM_KERNEL_CONTEXT ) {
+		DRM(ctxbitmap_free)( dev, ctx.handle );
+	}
+
+	return 0;
+}
+
+
+#else /* __HAVE_CTX_BITMAP */
+
+/* ================================================================
+ * Old-style context support
+ */
+
+
+int DRM(context_switch)(drm_device_t *dev, int old, int new)
+{
+	char	    buf[64];
+	drm_queue_t *q;
+
+#if 0
+	atomic_inc(&dev->total_ctx);
+#endif
+
+	if (test_and_set_bit(0, &dev->context_flag)) {
+		DRM_ERROR("Reentering -- FIXME\n");
+		return -EBUSY;
+	}
+
+#if __HAVE_DMA_HISTOGRAM
+	dev->ctx_start = get_cycles();
+#endif
+
+	DRM_DEBUG("Context switch from %d to %d\n", old, new);
+
+	if (new >= dev->queue_count) {
+		clear_bit(0, &dev->context_flag);
+		return -EINVAL;
+	}
+
+	if (new == dev->last_context) {
+		clear_bit(0, &dev->context_flag);
+		return 0;
+	}
+
+	q = dev->queuelist[new];
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+		atomic_dec(&q->use_count);
+		clear_bit(0, &dev->context_flag);
+		return -EINVAL;
+	}
+
+	if (DRM(flags) & DRM_FLAG_NOCTX) {
+		DRM(context_switch_complete)(dev, new);
+	} else {
+		sprintf(buf, "C %d %d\n", old, new);
+		DRM(write_string)(dev, buf);
+	}
+
+	atomic_dec(&q->use_count);
+
+	return 0;
+}
+
+int DRM(context_switch_complete)(drm_device_t *dev, int new)
+{
+	drm_device_dma_t *dma = dev->dma;
+
+	dev->last_context = new;  /* PRE/POST: This is the _only_ writer. */
+	dev->last_switch  = jiffies;
+
+	if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
+		DRM_ERROR("Lock isn't held after context switch\n");
+	}
+
+	if (!dma || !(dma->next_buffer && dma->next_buffer->while_locked)) {
+		if (DRM(lock_free)(dev, &dev->lock.hw_lock->lock,
+				  DRM_KERNEL_CONTEXT)) {
+			DRM_ERROR("Cannot free lock\n");
+		}
+	}
+
+#if __HAVE_DMA_HISTOGRAM
+	atomic_inc(&dev->histo.ctx[DRM(histogram_slot)(get_cycles()
+						      - dev->ctx_start)]);
+
+#endif
+	clear_bit(0, &dev->context_flag);
+	wake_up_interruptible(&dev->context_wait);
+
+	return 0;
+}
+
+static int DRM(init_queue)(drm_device_t *dev, drm_queue_t *q, drm_ctx_t *ctx)
+{
+	DRM_DEBUG("\n");
+
+	if (atomic_read(&q->use_count) != 1
+	    || atomic_read(&q->finalization)
+	    || atomic_read(&q->block_count)) {
+		DRM_ERROR("New queue is already in use: u%d f%d b%d\n",
+			  atomic_read(&q->use_count),
+			  atomic_read(&q->finalization),
+			  atomic_read(&q->block_count));
+	}
+
+	atomic_set(&q->finalization,  0);
+	atomic_set(&q->block_count,   0);
+	atomic_set(&q->block_read,    0);
+	atomic_set(&q->block_write,   0);
+	atomic_set(&q->total_queued,  0);
+	atomic_set(&q->total_flushed, 0);
+	atomic_set(&q->total_locks,   0);
+
+	init_waitqueue_head(&q->write_queue);
+	init_waitqueue_head(&q->read_queue);
+	init_waitqueue_head(&q->flush_queue);
+
+	q->flags = ctx->flags;
+
+	DRM(waitlist_create)(&q->waitlist, dev->dma->buf_count);
+
+	return 0;
+}
+
+
+/* drm_alloc_queue:
+PRE: 1) dev->queuelist[0..dev->queue_count] is allocated and will not
+	disappear (so all deallocation must be done after IOCTLs are off)
+     2) dev->queue_count < dev->queue_slots
+     3) dev->queuelist[i].use_count == 0 and
+	dev->queuelist[i].finalization == 0 if i not in use
+POST: 1) dev->queuelist[i].use_count == 1
+      2) dev->queue_count < dev->queue_slots */
+
+static int DRM(alloc_queue)(drm_device_t *dev)
+{
+	int	    i;
+	drm_queue_t *queue;
+	int	    oldslots;
+	int	    newslots;
+				/* Check for a free queue */
+	for (i = 0; i < dev->queue_count; i++) {
+		atomic_inc(&dev->queuelist[i]->use_count);
+		if (atomic_read(&dev->queuelist[i]->use_count) == 1
+		    && !atomic_read(&dev->queuelist[i]->finalization)) {
+			DRM_DEBUG("%d (free)\n", i);
+			return i;
+		}
+		atomic_dec(&dev->queuelist[i]->use_count);
+	}
+				/* Allocate a new queue */
+	down(&dev->struct_sem);
+
+	queue = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES);
+	memset(queue, 0, sizeof(*queue));
+	atomic_set(&queue->use_count, 1);
+
+	++dev->queue_count;
+	if (dev->queue_count >= dev->queue_slots) {
+		oldslots = dev->queue_slots * sizeof(*dev->queuelist);
+		if (!dev->queue_slots) dev->queue_slots = 1;
+		dev->queue_slots *= 2;
+		newslots = dev->queue_slots * sizeof(*dev->queuelist);
+
+		dev->queuelist = DRM(realloc)(dev->queuelist,
+					      oldslots,
+					      newslots,
+					      DRM_MEM_QUEUES);
+		if (!dev->queuelist) {
+			up(&dev->struct_sem);
+			DRM_DEBUG("out of memory\n");
+			return -ENOMEM;
+		}
+	}
+	dev->queuelist[dev->queue_count-1] = queue;
+
+	up(&dev->struct_sem);
+	DRM_DEBUG("%d (new)\n", dev->queue_count - 1);
+	return dev->queue_count - 1;
+}
+
+int DRM(resctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_ctx_res_t	res;
+	drm_ctx_t	ctx;
+	int		i;
+
+	DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
+	if (copy_from_user(&res, (drm_ctx_res_t *)arg, sizeof(res)))
+		return -EFAULT;
+	if (res.count >= DRM_RESERVED_CONTEXTS) {
+		memset(&ctx, 0, sizeof(ctx));
+		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
+			ctx.handle = i;
+			if (copy_to_user(&res.contexts[i],
+					 &i,
+					 sizeof(i)))
+				return -EFAULT;
+		}
+	}
+	res.count = DRM_RESERVED_CONTEXTS;
+	if (copy_to_user((drm_ctx_res_t *)arg, &res, sizeof(res)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(addctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	if ((ctx.handle = DRM(alloc_queue)(dev)) == DRM_KERNEL_CONTEXT) {
+				/* Init kernel's context and get a new one. */
+		DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+		ctx.handle = DRM(alloc_queue)(dev);
+	}
+	DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+	DRM_DEBUG("%d\n", ctx.handle);
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(modctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle < 0 || ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	if (DRM_BUFCOUNT(&q->waitlist)) {
+		atomic_dec(&q->use_count);
+		return -EBUSY;
+	}
+
+	q->flags = ctx.flags;
+
+	atomic_dec(&q->use_count);
+	return 0;
+}
+
+int DRM(getctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	ctx.flags = q->flags;
+	atomic_dec(&q->use_count);
+
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+
+	return 0;
+}
+
+int DRM(switchctx)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	return DRM(context_switch)(dev, dev->last_context, ctx.handle);
+}
+
+int DRM(newctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	DRM(context_switch_complete)(dev, ctx.handle);
+
+	return 0;
+}
+
+int DRM(rmctx)(struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+	drm_buf_t	*buf;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	atomic_inc(&q->finalization); /* Mark queue in finalization state */
+	atomic_sub(2, &q->use_count); /* Mark queue as unused (pending
+					 finalization) */
+
+	while (test_and_set_bit(0, &dev->interrupt_flag)) {
+		schedule();
+		if (signal_pending(current)) {
+			clear_bit(0, &dev->interrupt_flag);
+			return -EINTR;
+		}
+	}
+				/* Remove queued buffers */
+	while ((buf = DRM(waitlist_get)(&q->waitlist))) {
+		DRM(free_buffer)(dev, buf);
+	}
+	clear_bit(0, &dev->interrupt_flag);
+
+				/* Wakeup blocked processes */
+	wake_up_interruptible(&q->read_queue);
+	wake_up_interruptible(&q->write_queue);
+	wake_up_interruptible(&q->flush_queue);
+
+				/* Finalization over.  Queue is made
+				   available when both use_count and
+				   finalization become 0, which won't
+				   happen until all the waiting processes
+				   stop waiting. */
+	atomic_dec(&q->finalization);
+	return 0;
+}
+
+#endif /* __HAVE_CTX_BITMAP */
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
new file mode 100644
index 00000000..7447ca6d
--- /dev/null
+++ b/linux-core/drm_drv.c
@@ -0,0 +1,938 @@
+/* drm_drv.h -- Generic driver template -*- linux-c -*-
+ * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * To use this template, you must at least define the following (samples
+ * given for the MGA driver):
+ *
+ * #define DRIVER_AUTHOR	"VA Linux Systems, Inc."
+ *
+ * #define DRIVER_NAME		"mga"
+ * #define DRIVER_DESC		"Matrox G200/G400"
+ * #define DRIVER_DATE		"20001127"
+ *
+ * #define DRIVER_MAJOR		2
+ * #define DRIVER_MINOR		0
+ * #define DRIVER_PATCHLEVEL	2
+ *
+ * #define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( mga_ioctls )
+ *
+ * #define DRM(x)		mga_##x
+ */
+
+#ifndef __MUST_HAVE_AGP
+#define __MUST_HAVE_AGP			0
+#endif
+#ifndef __HAVE_CTX_BITMAP
+#define __HAVE_CTX_BITMAP		0
+#endif
+#ifndef __HAVE_DMA_IRQ
+#define __HAVE_DMA_IRQ			0
+#endif
+#ifndef __HAVE_DMA_QUEUE
+#define __HAVE_DMA_QUEUE		0
+#endif
+#ifndef __HAVE_MULTIPLE_DMA_QUEUES
+#define __HAVE_MULTIPLE_DMA_QUEUES	0
+#endif
+#ifndef __HAVE_DMA_SCHEDULE
+#define __HAVE_DMA_SCHEDULE		0
+#endif
+#ifndef __HAVE_DMA_FLUSH
+#define __HAVE_DMA_FLUSH		0
+#endif
+#ifndef __HAVE_DMA_READY
+#define __HAVE_DMA_READY		0
+#endif
+#ifndef __HAVE_DMA_QUIESCENT
+#define __HAVE_DMA_QUIESCENT		0
+#endif
+#ifndef __HAVE_RELEASE
+#define __HAVE_RELEASE			0
+#endif
+#ifndef __HAVE_COUNTERS
+#define __HAVE_COUNTERS			0
+#endif
+
+#ifndef DRIVER_PREINIT
+#define DRIVER_PREINIT()
+#endif
+#ifndef DRIVER_POSTINIT
+#define DRIVER_POSTINIT()
+#endif
+#ifndef DRIVER_PRERELEASE
+#define DRIVER_PRERELEASE()
+#endif
+#ifndef DRIVER_PRETAKEDOWN
+#define DRIVER_PRETAKEDOWN()
+#endif
+#ifndef DRIVER_IOCTLS
+#define DRIVER_IOCTLS
+#endif
+
+
+static drm_device_t	DRM(device);
+static int              DRM(minor);
+
+static struct file_operations	DRM(fops) = {
+#if LINUX_VERSION_CODE >= 0x020400
+				/* This started being used during 2.4.0-test */
+	owner:   THIS_MODULE,
+#endif
+	open:	 DRM(open),
+	flush:	 DRM(flush),
+	release: DRM(release),
+	ioctl:	 DRM(ioctl),
+	mmap:	 DRM(mmap),
+	read:	 DRM(read),
+	fasync:	 DRM(fasync),
+	poll:	 DRM(poll),
+};
+
+
+static drm_ioctl_desc_t		  DRM(ioctls)[] = {
+	[DRM_IOCTL_NR(DRM_IOCTL_VERSION)]       = { DRM(version),     0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)]    = { DRM(getunique),   0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)]     = { DRM(getmagic),    0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)]     = { DRM(irq_busid),   0, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)]       = { DRM(getmap),      0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)]    = { DRM(getclient),   0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)]     = { DRM(getstats),    0, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)]    = { DRM(setunique),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)]         = { DRM(block),       1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)]       = { DRM(unblock),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)]    = { DRM(authmagic),   1, 1 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)]       = { DRM(addmap),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)]        = { DRM(rmmap),       1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { DRM(setsareactx), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { DRM(getsareactx), 1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)]       = { DRM(addctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)]        = { DRM(rmctx),       1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)]       = { DRM(modctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)]       = { DRM(getctx),      1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)]    = { DRM(switchctx),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)]       = { DRM(newctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)]       = { DRM(resctx),      1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)]      = { DRM(adddraw),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)]       = { DRM(rmdraw),      1, 1 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_LOCK)]	        = { DRM(lock),        1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)]        = { DRM(unlock),      1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(finish),      1, 0 },
+
+#if __HAVE_DMA
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)]      = { DRM(addbufs),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)]     = { DRM(markbufs),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)]     = { DRM(infobufs),    1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)]      = { DRM(mapbufs),     1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)]     = { DRM(freebufs),    1, 0 },
+
+	/* The DRM_IOCTL_DMA ioctl should be defined by the driver.
+	 */
+#if __HAVE_DMA_IRQ
+	[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)]       = { DRM(control),     1, 1 },
+#endif
+#endif
+
+#if __REALLY_HAVE_AGP
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)]   = { DRM(agp_acquire), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)]   = { DRM(agp_release), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)]    = { DRM(agp_enable),  1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)]      = { DRM(agp_info),    1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)]     = { DRM(agp_alloc),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)]      = { DRM(agp_free),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)]      = { DRM(agp_bind),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)]    = { DRM(agp_unbind),  1, 1 },
+#endif
+
+	DRIVER_IOCTLS
+};
+
+#define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( DRM(ioctls) )
+
+#ifdef MODULE
+static char *drm_opts = NULL;
+#endif
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_PARM( drm_opts, "s" );
+
+#ifndef MODULE
+/* DRM(options) is called by the kernel to parse command-line options
+ * passed via the boot-loader (e.g., LILO).  It calls the insmod option
+ * routine, drm_parse_drm.
+ */
+
+static int __init DRM(options)( char *str )
+{
+	DRM(parse_options)( str );
+	return 1;
+}
+
+__setup( DRIVER_NAME "=", DRM(options) );
+#endif
+
+static int DRM(setup)( drm_device_t *dev )
+{
+	int i;
+
+	atomic_set( &dev->ioctl_count, 0 );
+	atomic_set( &dev->vma_count, 0 );
+	dev->buf_use = 0;
+	atomic_set( &dev->buf_alloc, 0 );
+
+#if __HAVE_DMA
+	i = DRM(dma_setup)( dev );
+	if ( i < 0 )
+		return i;
+#endif
+
+	dev->counters  = 6 + __HAVE_COUNTERS;
+	dev->types[0]  = _DRM_STAT_LOCK;
+	dev->types[1]  = _DRM_STAT_OPENS;
+	dev->types[2]  = _DRM_STAT_CLOSES;
+	dev->types[3]  = _DRM_STAT_IOCTLS;
+	dev->types[4]  = _DRM_STAT_LOCKS;
+	dev->types[5]  = _DRM_STAT_UNLOCKS;
+#ifdef __HAVE_COUNTER6
+	dev->types[6]  = __HAVE_COUNTER6;
+#endif
+#ifdef __HAVE_COUNTER7
+	dev->types[7]  = __HAVE_COUNTER7;
+#endif
+#ifdef __HAVE_COUNTER8
+	dev->types[8]  = __HAVE_COUNTER8;
+#endif
+#ifdef __HAVE_COUNTER9
+	dev->types[9]  = __HAVE_COUNTER9;
+#endif
+#ifdef __HAVE_COUNTER10
+	dev->types[10] = __HAVE_COUNTER10;
+#endif
+#ifdef __HAVE_COUNTER11
+	dev->types[11] = __HAVE_COUNTER11;
+#endif
+#ifdef __HAVE_COUNTER12
+	dev->types[12] = __HAVE_COUNTER12;
+#endif
+#ifdef __HAVE_COUNTER13
+	dev->types[13] = __HAVE_COUNTER13;
+#endif
+#ifdef __HAVE_COUNTER14
+	dev->types[14] = __HAVE_COUNTER14;
+#endif
+#ifdef __HAVE_COUNTER15
+	dev->types[14] = __HAVE_COUNTER14;
+#endif
+
+	for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
+		atomic_set( &dev->counts[i], 0 );
+
+	for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+		dev->magiclist[i].head = NULL;
+		dev->magiclist[i].tail = NULL;
+	}
+
+	dev->maplist = DRM(alloc)(sizeof(*dev->maplist),
+				  DRM_MEM_MAPS);
+	if(dev->maplist == NULL) return -ENOMEM;
+	memset(dev->maplist, 0, sizeof(*dev->maplist));
+	INIT_LIST_HEAD(&dev->maplist->head);
+	dev->map_count = 0;
+
+	dev->vmalist = NULL;
+	dev->lock.hw_lock = NULL;
+	init_waitqueue_head( &dev->lock.lock_queue );
+	dev->queue_count = 0;
+	dev->queue_reserved = 0;
+	dev->queue_slots = 0;
+	dev->queuelist = NULL;
+	dev->irq = 0;
+	dev->context_flag = 0;
+	dev->interrupt_flag = 0;
+	dev->dma_flag = 0;
+	dev->last_context = 0;
+	dev->last_switch = 0;
+	dev->last_checked = 0;
+	init_timer( &dev->timer );
+	init_waitqueue_head( &dev->context_wait );
+
+	dev->ctx_start = 0;
+	dev->lck_start = 0;
+
+	dev->buf_rp = dev->buf;
+	dev->buf_wp = dev->buf;
+	dev->buf_end = dev->buf + DRM_BSZ;
+	dev->buf_async = NULL;
+	init_waitqueue_head( &dev->buf_readers );
+	init_waitqueue_head( &dev->buf_writers );
+
+	DRM_DEBUG( "\n" );
+
+	/* The kernel's context could be created here, but is now created
+	 * in drm_dma_enqueue.	This is more resource-efficient for
+	 * hardware that does not do DMA, but may mean that
+	 * drm_select_queue fails between the time the interrupt is
+	 * initialized and the time the queues are initialized.
+	 */
+	return 0;
+}
+
+
+static int DRM(takedown)( drm_device_t *dev )
+{
+	drm_magic_entry_t *pt, *next;
+	drm_map_t *map;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+	drm_vma_entry_t *vma, *vma_next;
+	int i;
+
+	DRM_DEBUG( "\n" );
+
+	DRIVER_PRETAKEDOWN();
+#if __HAVE_DMA_IRQ
+	if ( dev->irq ) DRM(irq_uninstall)( dev );
+#endif
+
+	down( &dev->struct_sem );
+	del_timer( &dev->timer );
+
+	if ( dev->devname ) {
+		DRM(free)( dev->devname, strlen( dev->devname ) + 1,
+			   DRM_MEM_DRIVER );
+		dev->devname = NULL;
+	}
+
+	if ( dev->unique ) {
+		DRM(free)( dev->unique, strlen( dev->unique ) + 1,
+			   DRM_MEM_DRIVER );
+		dev->unique = NULL;
+		dev->unique_len = 0;
+	}
+				/* Clear pid list */
+	for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+		for ( pt = dev->magiclist[i].head ; pt ; pt = next ) {
+			next = pt->next;
+			DRM(free)( pt, sizeof(*pt), DRM_MEM_MAGIC );
+		}
+		dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
+	}
+
+#if __REALLY_HAVE_AGP
+				/* Clear AGP information */
+	if ( dev->agp ) {
+		drm_agp_mem_t *entry;
+		drm_agp_mem_t *nexte;
+
+				/* Remove AGP resources, but leave dev->agp
+                                   intact until drv_cleanup is called. */
+		for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
+			nexte = entry->next;
+			if ( entry->bound ) DRM(unbind_agp)( entry->memory );
+			DRM(free_agp)( entry->memory, entry->pages );
+			DRM(free)( entry, sizeof(*entry), DRM_MEM_AGPLISTS );
+		}
+		dev->agp->memory = NULL;
+
+		if ( dev->agp->acquired ) DRM(agp_do_release)();
+
+		dev->agp->acquired = 0;
+		dev->agp->enabled  = 0;
+	}
+#endif
+
+				/* Clear vma list (only built for debugging) */
+	if ( dev->vmalist ) {
+		for ( vma = dev->vmalist ; vma ; vma = vma_next ) {
+			vma_next = vma->next;
+			DRM(free)( vma, sizeof(*vma), DRM_MEM_VMAS );
+		}
+		dev->vmalist = NULL;
+	}
+
+	if( dev->maplist ) {
+		list_for_each(list, &dev->maplist->head) {
+			r_list = (drm_map_list_t *)list;
+			map = r_list->map;
+			DRM(free)(r_list, sizeof(*r_list), DRM_MEM_MAPS);
+			if(!map) continue;
+
+			switch ( map->type ) {
+			case _DRM_REGISTERS:
+			case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+				if ( map->mtrr >= 0 ) {
+					int retcode;
+					retcode = mtrr_del( map->mtrr,
+							    map->offset,
+							    map->size );
+					DRM_DEBUG( "mtrr_del=%d\n", retcode );
+				}
+#endif
+				DRM(ioremapfree)( map->handle, map->size );
+				break;
+			case _DRM_SHM:
+				vfree(map->handle);
+				break;
+
+			case _DRM_AGP:
+				/* Do nothing here, because this is all
+				 * handled in the AGP/GART driver.
+				 */
+				break;
+			}
+ 			DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+ 		}
+		DRM(free)(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
+		dev->maplist = NULL;
+ 	}
+
+#if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES
+	if ( dev->queuelist ) {
+		for ( i = 0 ; i < dev->queue_count ; i++ ) {
+			DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist );
+			if ( dev->queuelist[i] ) {
+				DRM(free)( dev->queuelist[i],
+					  sizeof(*dev->queuelist[0]),
+					  DRM_MEM_QUEUES );
+				dev->queuelist[i] = NULL;
+			}
+		}
+		DRM(free)( dev->queuelist,
+			  dev->queue_slots * sizeof(*dev->queuelist),
+			  DRM_MEM_QUEUES );
+		dev->queuelist = NULL;
+	}
+	dev->queue_count = 0;
+#endif
+
+#if __HAVE_DMA
+	DRM(dma_takedown)( dev );
+#endif
+	if ( dev->lock.hw_lock ) {
+		dev->lock.hw_lock = NULL; /* SHM removed */
+		dev->lock.pid = 0;
+		wake_up_interruptible( &dev->lock.lock_queue );
+	}
+	up( &dev->struct_sem );
+
+	return 0;
+}
+
+/* drm_init is called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported).
+ */
+static int __init drm_init( void )
+{
+	drm_device_t *dev = &DRM(device);
+#if __HAVE_CTX_BITMAP
+	int retcode;
+#endif
+	DRM_DEBUG( "\n" );
+
+	memset( (void *)dev, 0, sizeof(*dev) );
+	dev->count_lock = SPIN_LOCK_UNLOCKED;
+	sema_init( &dev->struct_sem, 1 );
+
+#ifdef MODULE
+	DRM(parse_options)( drm_opts );
+#endif
+	DRIVER_PREINIT();
+
+	DRM(mem_init)();
+
+	if ((DRM(minor) = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0)
+		return -EPERM;
+	dev->device = MKDEV(DRM_MAJOR, DRM(minor) );
+	dev->name   = DRIVER_NAME;
+
+#if __REALLY_HAVE_AGP
+	dev->agp = DRM(agp_init)();
+#if __MUST_HAVE_AGP
+	if ( dev->agp == NULL ) {
+		DRM_ERROR( "Cannot initialize the agpgart module.\n" );
+		DRM(stub_unregister)(DRM(minor));
+		DRM(takedown)( dev );
+		return -ENOMEM;
+	}
+#endif
+#if __REALLY_HAVE_MTRR
+	if (dev->agp)
+		dev->agp->agp_mtrr = mtrr_add( dev->agp->agp_info.aper_base,
+				       dev->agp->agp_info.aper_size*1024*1024,
+				       MTRR_TYPE_WRCOMB,
+				       1 );
+#endif
+#endif
+
+#if __HAVE_CTX_BITMAP
+	retcode = DRM(ctxbitmap_init)( dev );
+	if( retcode ) {
+		DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
+		DRM(stub_unregister)(DRM(minor));
+		DRM(takedown)( dev );
+		return retcode;
+	}
+#endif
+
+	DRIVER_POSTINIT();
+
+	DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
+		  DRIVER_NAME,
+		  DRIVER_MAJOR,
+		  DRIVER_MINOR,
+		  DRIVER_PATCHLEVEL,
+		  DRIVER_DATE,
+		  DRM(minor) );
+
+	return 0;
+}
+
+/* drm_cleanup is called via cleanup_module at module unload time.
+ */
+static void __exit drm_cleanup( void )
+{
+	drm_device_t *dev = &DRM(device);
+
+	DRM_DEBUG( "\n" );
+
+	if ( DRM(stub_unregister)(DRM(minor)) ) {
+		DRM_ERROR( "Cannot unload module\n" );
+	} else {
+		DRM_INFO( "Module unloaded\n" );
+	}
+#if __HAVE_CTX_BITMAP
+	DRM(ctxbitmap_cleanup)( dev );
+#endif
+
+#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
+	if ( dev->agp && dev->agp->agp_mtrr ) {
+		int retval;
+		retval = mtrr_del( dev->agp->agp_mtrr,
+				   dev->agp->agp_info.aper_base,
+				   dev->agp->agp_info.aper_size*1024*1024 );
+		DRM_DEBUG( "mtrr_del=%d\n", retval );
+	}
+#endif
+
+	DRM(takedown)( dev );
+
+#if __REALLY_HAVE_AGP
+	if ( dev->agp ) {
+		DRM(agp_uninit)();
+		DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
+		dev->agp = NULL;
+	}
+#endif
+}
+
+module_init( drm_init );
+module_exit( drm_cleanup );
+
+
+int DRM(version)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_version_t version;
+	int len;
+
+	if ( copy_from_user( &version,
+			     (drm_version_t *)arg,
+			     sizeof(version) ) )
+		return -EFAULT;
+
+#define DRM_COPY( name, value )						\
+	len = strlen( value );						\
+	if ( len > name##_len ) len = name##_len;			\
+	name##_len = strlen( value );					\
+	if ( len && name ) {						\
+		if ( copy_to_user( name, value, len ) )			\
+			return -EFAULT;					\
+	}
+
+	version.version_major = DRIVER_MAJOR;
+	version.version_minor = DRIVER_MINOR;
+	version.version_patchlevel = DRIVER_PATCHLEVEL;
+
+	DRM_COPY( version.name, DRIVER_NAME );
+	DRM_COPY( version.date, DRIVER_DATE );
+	DRM_COPY( version.desc, DRIVER_DESC );
+
+	if ( copy_to_user( (drm_version_t *)arg,
+			   &version,
+			   sizeof(version) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(open)( struct inode *inode, struct file *filp )
+{
+	drm_device_t *dev = &DRM(device);
+	int retcode = 0;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	retcode = DRM(open_helper)( inode, filp, dev );
+	if ( !retcode ) {
+#if LINUX_VERSION_CODE < 0x020333
+		MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+		atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
+		spin_lock( &dev->count_lock );
+		if ( !dev->open_count++ ) {
+			spin_unlock( &dev->count_lock );
+			return DRM(setup)( dev );
+		}
+		spin_unlock( &dev->count_lock );
+	}
+
+	return retcode;
+}
+
+int DRM(release)( struct inode *inode, struct file *filp )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev;
+	int retcode = 0;
+
+	lock_kernel();
+	dev = priv->dev;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	DRIVER_PRERELEASE();
+
+	/* ========================================================
+	 * Begin inline drm_release
+	 */
+
+	DRM_DEBUG( "pid = %d, device = 0x%x, open_count = %d\n",
+		   current->pid, dev->device, dev->open_count );
+
+	if ( dev->lock.hw_lock &&
+	     _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
+	     dev->lock.pid == current->pid ) {
+		DRM_DEBUG( "Process %d dead, freeing lock for context %d\n",
+			   current->pid,
+			   _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
+#if __HAVE_RELEASE
+		DRIVER_RELEASE();
+#endif
+		DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+				_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
+
+				/* FIXME: may require heavy-handed reset of
+                                   hardware at this point, possibly
+                                   processed via a callback to the X
+                                   server. */
+	}
+#if __HAVE_RELEASE
+	else if ( dev->lock.hw_lock ) {
+		/* The lock is required to reclaim buffers */
+		DECLARE_WAITQUEUE( entry, current );
+		add_wait_queue( &dev->lock.lock_queue, &entry );
+		for (;;) {
+			current->state = TASK_INTERRUPTIBLE;
+			if ( !dev->lock.hw_lock ) {
+				/* Device has been unregistered */
+				retcode = -EINTR;
+				break;
+			}
+			if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+					     DRM_KERNEL_CONTEXT ) ) {
+				dev->lock.pid	    = priv->pid;
+				dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+				break;	/* Got lock */
+			}
+				/* Contention */
+#if 0
+			atomic_inc( &dev->total_sleeps );
+#endif
+			schedule();
+			if ( signal_pending( current ) ) {
+				retcode = -ERESTARTSYS;
+				break;
+			}
+		}
+		current->state = TASK_RUNNING;
+		remove_wait_queue( &dev->lock.lock_queue, &entry );
+		if( !retcode ) {
+			DRIVER_RELEASE();
+			DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+					DRM_KERNEL_CONTEXT );
+		}
+	}
+#elif __HAVE_DMA
+	DRM(reclaim_buffers)( dev, priv->pid );
+#endif
+
+	DRM(fasync)( -1, filp, 0 );
+
+	down( &dev->struct_sem );
+	if ( priv->remove_auth_on_close == 1 ) {
+		drm_file_t *temp = dev->file_first;
+		while ( temp ) {
+			temp->authenticated = 0;
+			temp = temp->next;
+		}
+	}
+	if ( priv->prev ) {
+		priv->prev->next = priv->next;
+	} else {
+		dev->file_first	 = priv->next;
+	}
+	if ( priv->next ) {
+		priv->next->prev = priv->prev;
+	} else {
+		dev->file_last	 = priv->prev;
+	}
+	up( &dev->struct_sem );
+
+	DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES );
+
+	/* ========================================================
+	 * End inline drm_release
+	 */
+
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
+	spin_lock( &dev->count_lock );
+	if ( !--dev->open_count ) {
+		if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) {
+			DRM_ERROR( "Device busy: %d %d\n",
+				   atomic_read( &dev->ioctl_count ),
+				   dev->blocked );
+			spin_unlock( &dev->count_lock );
+			unlock_kernel();
+			return -EBUSY;
+		}
+		spin_unlock( &dev->count_lock );
+		unlock_kernel();
+		return DRM(takedown)( dev );
+	}
+	spin_unlock( &dev->count_lock );
+
+	unlock_kernel();
+	return retcode;
+}
+
+/* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm.
+ */
+int DRM(ioctl)( struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ioctl_desc_t *ioctl;
+	drm_ioctl_t *func;
+	int nr = DRM_IOCTL_NR(cmd);
+	int retcode = 0;
+
+	atomic_inc( &dev->ioctl_count );
+	atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
+	++priv->ioctl_count;
+
+	DRM_DEBUG( "pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%x, auth=%d\n",
+		   current->pid, cmd, nr, dev->device, priv->authenticated );
+
+	if ( nr >= DRIVER_IOCTL_COUNT ) {
+		retcode = -EINVAL;
+	} else {
+		ioctl = &DRM(ioctls)[nr];
+		func = ioctl->func;
+
+		if ( !func ) {
+			DRM_DEBUG( "no function\n" );
+			retcode = -EINVAL;
+		} else if ( ( ioctl->root_only && !capable( CAP_SYS_ADMIN ) )||
+			    ( ioctl->auth_needed && !priv->authenticated ) ) {
+			retcode = -EACCES;
+		} else {
+			retcode = func( inode, filp, cmd, arg );
+		}
+	}
+
+	atomic_dec( &dev->ioctl_count );
+	return retcode;
+}
+
+int DRM(lock)( struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg )
+{
+        drm_file_t *priv = filp->private_data;
+        drm_device_t *dev = priv->dev;
+        DECLARE_WAITQUEUE( entry, current );
+        drm_lock_t lock;
+        int ret = 0;
+#if __HAVE_MULTIPLE_DMA_QUEUES
+	drm_queue_t *q;
+#endif
+#if __HAVE_DMA_HISTOGRAM
+        cycles_t start;
+
+        dev->lck_start = start = get_cycles();
+#endif
+
+        if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
+		return -EFAULT;
+
+        if ( lock.context == DRM_KERNEL_CONTEXT ) {
+                DRM_ERROR( "Process %d using kernel context %d\n",
+			   current->pid, lock.context );
+                return -EINVAL;
+        }
+
+        DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
+		   lock.context, current->pid,
+		   dev->lock.hw_lock->lock, lock.flags );
+
+#if __HAVE_DMA_QUEUE
+        if ( lock.context < 0 )
+                return -EINVAL;
+#elif __HAVE_MULTIPLE_DMA_QUEUES
+        if ( lock.context < 0 || lock.context >= dev->queue_count )
+                return -EINVAL;
+	q = dev->queuelist[lock.context];
+#endif
+
+#if __HAVE_DMA_FLUSH
+	ret = DRM(flush_block_and_flush)( dev, lock.context, lock.flags );
+#endif
+        if ( !ret ) {
+                add_wait_queue( &dev->lock.lock_queue, &entry );
+                for (;;) {
+                        current->state = TASK_INTERRUPTIBLE;
+                        if ( !dev->lock.hw_lock ) {
+                                /* Device has been unregistered */
+                                ret = -EINTR;
+                                break;
+                        }
+                        if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+					     lock.context ) ) {
+                                dev->lock.pid       = current->pid;
+                                dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+                                break;  /* Got lock */
+                        }
+
+                                /* Contention */
+                        schedule();
+                        if ( signal_pending( current ) ) {
+                                ret = -ERESTARTSYS;
+                                break;
+                        }
+                }
+                current->state = TASK_RUNNING;
+                remove_wait_queue( &dev->lock.lock_queue, &entry );
+        }
+
+#if __HAVE_DMA_FLUSH
+	DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */
+#endif
+
+        if ( !ret ) {
+		sigemptyset( &dev->sigmask );
+		sigaddset( &dev->sigmask, SIGSTOP );
+		sigaddset( &dev->sigmask, SIGTSTP );
+		sigaddset( &dev->sigmask, SIGTTIN );
+		sigaddset( &dev->sigmask, SIGTTOU );
+		dev->sigdata.context = lock.context;
+		dev->sigdata.lock    = dev->lock.hw_lock;
+		block_all_signals( DRM(notifier),
+				   &dev->sigdata, &dev->sigmask );
+
+#if __HAVE_DMA_READY
+                if ( lock.flags & _DRM_LOCK_READY ) {
+			DRIVER_DMA_READY();
+		}
+#endif
+#if __HAVE_DMA_QUIESCENT
+                if ( lock.flags & _DRM_LOCK_QUIESCENT ) {
+			DRIVER_DMA_QUIESCENT();
+		}
+#endif
+        }
+
+        DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
+
+#if __HAVE_DMA_HISTOGRAM
+        atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]);
+#endif
+        return ret;
+}
+
+
+int DRM(unlock)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_lock_t lock;
+
+	if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
+		return -EFAULT;
+
+	if ( lock.context == DRM_KERNEL_CONTEXT ) {
+		DRM_ERROR( "Process %d using kernel context %d\n",
+			   current->pid, lock.context );
+		return -EINVAL;
+	}
+
+	atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
+
+	DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
+			    DRM_KERNEL_CONTEXT );
+#if __HAVE_DMA_SCHEDULE
+	DRM(dma_schedule)( dev, 1 );
+#endif
+
+	/* FIXME: Do we ever really need to check this???
+	 */
+	if ( 1 /* !dev->context_flag */ ) {
+		if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+				     DRM_KERNEL_CONTEXT ) ) {
+			DRM_ERROR( "\n" );
+		}
+	}
+
+	unblock_all_signals();
+	return 0;
+}
diff --git a/linux-core/drm_ioctl.c b/linux-core/drm_ioctl.c
new file mode 100644
index 00000000..2fba6b0c
--- /dev/null
+++ b/linux-core/drm_ioctl.c
@@ -0,0 +1,210 @@
+/* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
+ * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+int DRM(irq_busid)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_irq_busid_t p;
+	struct pci_dev	*dev;
+
+	if (copy_from_user(&p, (drm_irq_busid_t *)arg, sizeof(p)))
+		return -EFAULT;
+	dev = pci_find_slot(p.busnum, PCI_DEVFN(p.devnum, p.funcnum));
+	if (dev) p.irq = dev->irq;
+	else	 p.irq = 0;
+	DRM_DEBUG("%d:%d:%d => IRQ %d\n",
+		  p.busnum, p.devnum, p.funcnum, p.irq);
+	if (copy_to_user((drm_irq_busid_t *)arg, &p, sizeof(p)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(getunique)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	 *priv	 = filp->private_data;
+	drm_device_t	 *dev	 = priv->dev;
+	drm_unique_t	 u;
+
+	if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
+		return -EFAULT;
+	if (u.unique_len >= dev->unique_len) {
+		if (copy_to_user(u.unique, dev->unique, dev->unique_len))
+			return -EFAULT;
+	}
+	u.unique_len = dev->unique_len;
+	if (copy_to_user((drm_unique_t *)arg, &u, sizeof(u)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(setunique)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	 *priv	 = filp->private_data;
+	drm_device_t	 *dev	 = priv->dev;
+	drm_unique_t	 u;
+
+	if (dev->unique_len || dev->unique)
+		return -EBUSY;
+
+	if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
+		return -EFAULT;
+
+	if (!u.unique_len)
+		return -EINVAL;
+
+	dev->unique_len = u.unique_len;
+	dev->unique	= DRM(alloc)(u.unique_len + 1, DRM_MEM_DRIVER);
+	if (copy_from_user(dev->unique, u.unique, dev->unique_len))
+		return -EFAULT;
+	dev->unique[dev->unique_len] = '\0';
+
+	dev->devname = DRM(alloc)(strlen(dev->name) + strlen(dev->unique) + 2,
+				  DRM_MEM_DRIVER);
+	sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
+
+	return 0;
+}
+
+
+int DRM(getmap)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t   *priv = filp->private_data;
+	drm_device_t *dev  = priv->dev;
+	drm_map_t    map;
+	drm_map_list_t *r_list = NULL;
+	struct list_head *list;
+	int          idx;
+	int	     i;
+
+	if (copy_from_user(&map, (drm_map_t *)arg, sizeof(map)))
+		return -EFAULT;
+	idx = map.offset;
+
+	down(&dev->struct_sem);
+	if (idx < 0 || idx >= dev->map_count) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+
+	i = 0;
+	list_for_each(list, &dev->maplist->head) {
+		if(i == idx) {
+			r_list = (drm_map_list_t *)list;
+			break;
+		}
+		i++;
+	}
+	if(!r_list || !r_list->map) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+
+	map.offset = r_list->map->offset;
+	map.size   = r_list->map->size;
+	map.type   = r_list->map->type;
+	map.flags  = r_list->map->flags;
+	map.handle = r_list->map->handle;
+	map.mtrr   = r_list->map->mtrr;
+	up(&dev->struct_sem);
+
+	if (copy_to_user((drm_map_t *)arg, &map, sizeof(map))) return -EFAULT;
+	return 0;
+}
+
+int DRM(getclient)( struct inode *inode, struct file *filp,
+		    unsigned int cmd, unsigned long arg )
+{
+	drm_file_t   *priv = filp->private_data;
+	drm_device_t *dev  = priv->dev;
+	drm_client_t client;
+	drm_file_t   *pt;
+	int          idx;
+	int          i;
+
+	if (copy_from_user(&client, (drm_client_t *)arg, sizeof(client)))
+		return -EFAULT;
+	idx = client.idx;
+	down(&dev->struct_sem);
+	for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next)
+		;
+
+	if (!pt) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	client.auth  = pt->authenticated;
+	client.pid   = pt->pid;
+	client.uid   = pt->uid;
+	client.magic = pt->magic;
+	client.iocs  = pt->ioctl_count;
+	up(&dev->struct_sem);
+
+	if (copy_to_user((drm_client_t *)arg, &client, sizeof(client)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(getstats)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t   *priv = filp->private_data;
+	drm_device_t *dev  = priv->dev;
+	drm_stats_t  stats;
+	int          i;
+
+	memset(&stats, 0, sizeof(stats));
+	
+	down(&dev->struct_sem);
+
+	for (i = 0; i < dev->counters; i++) {
+		if (dev->types[i] == _DRM_STAT_LOCK)
+			stats.data[i].value
+				= (dev->lock.hw_lock
+				   ? dev->lock.hw_lock->lock : 0);
+		else 
+			stats.data[i].value = atomic_read(&dev->counts[i]);
+		stats.data[i].type  = dev->types[i];
+	}
+	
+	stats.count = dev->counters;
+
+	up(&dev->struct_sem);
+
+	if (copy_to_user((drm_stats_t *)arg, &stats, sizeof(stats)))
+		return -EFAULT;
+	return 0;
+}
diff --git a/linux-core/drm_proc.c b/linux-core/drm_proc.c
new file mode 100644
index 00000000..f65f42b7
--- /dev/null
+++ b/linux-core/drm_proc.c
@@ -0,0 +1,630 @@
+/* drm_proc.h -- /proc support for DRM -*- linux-c -*-
+ * Created: Mon Jan 11 09:48:47 1999 by faith@valinux.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ *
+ * Acknowledgements:
+ *    Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
+ *    the problem with the proc files not outputting all their information.
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+static int	   DRM(name_info)(char *buf, char **start, off_t offset,
+				  int request, int *eof, void *data);
+static int	   DRM(vm_info)(char *buf, char **start, off_t offset,
+				int request, int *eof, void *data);
+static int	   DRM(clients_info)(char *buf, char **start, off_t offset,
+				     int request, int *eof, void *data);
+static int	   DRM(queues_info)(char *buf, char **start, off_t offset,
+				    int request, int *eof, void *data);
+static int	   DRM(bufs_info)(char *buf, char **start, off_t offset,
+				  int request, int *eof, void *data);
+#if DRM_DEBUG_CODE
+static int	   DRM(vma_info)(char *buf, char **start, off_t offset,
+				 int request, int *eof, void *data);
+#endif
+#if __HAVE_DMA_HISTOGRAM
+static int	   DRM(histo_info)(char *buf, char **start, off_t offset,
+				   int request, int *eof, void *data);
+#endif
+
+struct drm_proc_list {
+	const char *name;
+	int	   (*f)(char *, char **, off_t, int, int *, void *);
+} DRM(proc_list)[] = {
+	{ "name",    DRM(name_info)    },
+	{ "mem",     DRM(mem_info)     },
+	{ "vm",	     DRM(vm_info)      },
+	{ "clients", DRM(clients_info) },
+	{ "queues",  DRM(queues_info)  },
+	{ "bufs",    DRM(bufs_info)    },
+#if DRM_DEBUG_CODE
+	{ "vma",     DRM(vma_info)     },
+#endif
+#if __HAVE_DMA_HISTOGRAM
+	{ "histo",   DRM(histo_info)   },
+#endif
+};
+#define DRM_PROC_ENTRIES (sizeof(DRM(proc_list))/sizeof(DRM(proc_list)[0]))
+
+struct proc_dir_entry *DRM(proc_init)(drm_device_t *dev, int minor,
+				      struct proc_dir_entry *root,
+				      struct proc_dir_entry **dev_root)
+{
+	struct proc_dir_entry *ent;
+	int		      i, j;
+	char                  name[64];
+
+	if (!minor) root = create_proc_entry("dri", S_IFDIR, NULL);
+	if (!root) {
+		DRM_ERROR("Cannot create /proc/dri\n");
+		return NULL;
+	}
+
+	sprintf(name, "%d", minor);
+	*dev_root = create_proc_entry(name, S_IFDIR, root);
+	if (!*dev_root) {
+		DRM_ERROR("Cannot create /proc/%s\n", name);
+		return NULL;
+	}
+
+	for (i = 0; i < DRM_PROC_ENTRIES; i++) {
+		ent = create_proc_entry(DRM(proc_list)[i].name,
+					S_IFREG|S_IRUGO, *dev_root);
+		if (!ent) {
+			DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
+				  name, DRM(proc_list)[i].name);
+			for (j = 0; j < i; j++)
+				remove_proc_entry(DRM(proc_list)[i].name,
+						  *dev_root);
+			remove_proc_entry(name, root);
+			if (!minor) remove_proc_entry("dri", NULL);
+			return NULL;
+		}
+		ent->read_proc = DRM(proc_list)[i].f;
+		ent->data      = dev;
+	}
+
+	return root;
+}
+
+
+int DRM(proc_cleanup)(int minor, struct proc_dir_entry *root,
+		      struct proc_dir_entry *dev_root)
+{
+	int  i;
+	char name[64];
+
+	if (!root || !dev_root) return 0;
+
+	for (i = 0; i < DRM_PROC_ENTRIES; i++)
+		remove_proc_entry(DRM(proc_list)[i].name, dev_root);
+	sprintf(name, "%d", minor);
+	remove_proc_entry(name, root);
+	if (!minor) remove_proc_entry("dri", NULL);
+
+	return 0;
+}
+
+static int DRM(name_info)(char *buf, char **start, off_t offset, int request,
+			  int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	if (dev->unique) {
+		DRM_PROC_PRINT("%s 0x%x %s\n",
+			       dev->name, dev->device, dev->unique);
+	} else {
+		DRM_PROC_PRINT("%s 0x%x\n", dev->name, dev->device);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(_vm_info)(char *buf, char **start, off_t offset, int request,
+			 int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+	drm_map_t    *map;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+
+				/* Hardcoded from _DRM_FRAME_BUFFER,
+                                   _DRM_REGISTERS, _DRM_SHM, and
+                                   _DRM_AGP. */
+	const char   *types[] = { "FB", "REG", "SHM", "AGP" };
+	const char   *type;
+	int	     i;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("slot	 offset	      size type flags	 "
+		       "address mtrr\n\n");
+	i = 0;
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *)list;
+		map = r_list->map;
+		if(!map) continue;
+		if (map->type < 0 || map->type > 3) type = "??";
+		else				    type = types[map->type];
+		DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s  0x%02x 0x%08lx ",
+			       i,
+			       map->offset,
+			       map->size,
+			       type,
+			       map->flags,
+			       (unsigned long)map->handle);
+		if (map->mtrr < 0) {
+			DRM_PROC_PRINT("none\n");
+		} else {
+			DRM_PROC_PRINT("%4d\n", map->mtrr);
+		}
+		i++;
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(vm_info)(char *buf, char **start, off_t offset, int request,
+			int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_vm_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+
+static int DRM(_queues_info)(char *buf, char **start, off_t offset,
+			     int request, int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+	int	     i;
+	drm_queue_t  *q;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("  ctx/flags   use   fin"
+		       "   blk/rw/rwf  wait    flushed	   queued"
+		       "      locks\n\n");
+	for (i = 0; i < dev->queue_count; i++) {
+		q = dev->queuelist[i];
+		atomic_inc(&q->use_count);
+		DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
+				   "%5d/0x%03x %5d %5d"
+				   " %5d/%c%c/%c%c%c %5Zd\n",
+				   i,
+				   q->flags,
+				   atomic_read(&q->use_count),
+				   atomic_read(&q->finalization),
+				   atomic_read(&q->block_count),
+				   atomic_read(&q->block_read) ? 'r' : '-',
+				   atomic_read(&q->block_write) ? 'w' : '-',
+				   waitqueue_active(&q->read_queue) ? 'r':'-',
+				   waitqueue_active(&q->write_queue) ? 'w':'-',
+				   waitqueue_active(&q->flush_queue) ? 'f':'-',
+				   DRM_BUFCOUNT(&q->waitlist));
+		atomic_dec(&q->use_count);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(queues_info)(char *buf, char **start, off_t offset, int request,
+			    int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_queues_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+/* drm_bufs_info is called whenever a process reads
+   /dev/dri/<dev>/bufs. */
+
+static int DRM(_bufs_info)(char *buf, char **start, off_t offset, int request,
+			   int *eof, void *data)
+{
+	drm_device_t	 *dev = (drm_device_t *)data;
+	int              len  = 0;
+	drm_device_dma_t *dma = dev->dma;
+	int		 i;
+
+	if (!dma || offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT(" o     size count  free	 segs pages    kB\n\n");
+	for (i = 0; i <= DRM_MAX_ORDER; i++) {
+		if (dma->bufs[i].buf_count)
+			DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
+				       i,
+				       dma->bufs[i].buf_size,
+				       dma->bufs[i].buf_count,
+				       atomic_read(&dma->bufs[i]
+						   .freelist.count),
+				       dma->bufs[i].seg_count,
+				       dma->bufs[i].seg_count
+				       *(1 << dma->bufs[i].page_order),
+				       (dma->bufs[i].seg_count
+					* (1 << dma->bufs[i].page_order))
+				       * PAGE_SIZE / 1024);
+	}
+	DRM_PROC_PRINT("\n");
+	for (i = 0; i < dma->buf_count; i++) {
+		if (i && !(i%32)) DRM_PROC_PRINT("\n");
+		DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
+	}
+	DRM_PROC_PRINT("\n");
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(bufs_info)(char *buf, char **start, off_t offset, int request,
+			  int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_bufs_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+
+static int DRM(_clients_info)(char *buf, char **start, off_t offset,
+			      int request, int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+	drm_file_t   *priv;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("a dev	pid    uid	magic	  ioctls\n\n");
+	for (priv = dev->file_first; priv; priv = priv->next) {
+		DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
+			       priv->authenticated ? 'y' : 'n',
+			       priv->minor,
+			       priv->pid,
+			       priv->uid,
+			       priv->magic,
+			       priv->ioctl_count);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(clients_info)(char *buf, char **start, off_t offset,
+			     int request, int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_clients_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+#if DRM_DEBUG_CODE
+
+#define DRM_VMA_VERBOSE 0
+
+static int DRM(_vma_info)(char *buf, char **start, off_t offset, int request,
+			  int *eof, void *data)
+{
+	drm_device_t	      *dev = (drm_device_t *)data;
+	int                   len  = 0;
+	drm_vma_entry_t	      *pt;
+	struct vm_area_struct *vma;
+#if DRM_VMA_VERBOSE
+	unsigned long	      i;
+	unsigned long	      address;
+	pgd_t		      *pgd;
+	pmd_t		      *pmd;
+	pte_t		      *pte;
+#endif
+#if defined(__i386__)
+	unsigned int	      pgprot;
+#endif
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
+		       atomic_read(&dev->vma_count),
+		       high_memory, virt_to_phys(high_memory));
+	for (pt = dev->vmalist; pt; pt = pt->next) {
+		if (!(vma = pt->vma)) continue;
+		DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
+			       pt->pid,
+			       vma->vm_start,
+			       vma->vm_end,
+			       vma->vm_flags & VM_READ	   ? 'r' : '-',
+			       vma->vm_flags & VM_WRITE	   ? 'w' : '-',
+			       vma->vm_flags & VM_EXEC	   ? 'x' : '-',
+			       vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
+			       vma->vm_flags & VM_LOCKED   ? 'l' : '-',
+			       vma->vm_flags & VM_IO	   ? 'i' : '-',
+			       VM_OFFSET(vma));
+
+#if defined(__i386__)
+		pgprot = pgprot_val(vma->vm_page_prot);
+		DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
+			       pgprot & _PAGE_PRESENT  ? 'p' : '-',
+			       pgprot & _PAGE_RW       ? 'w' : 'r',
+			       pgprot & _PAGE_USER     ? 'u' : 's',
+			       pgprot & _PAGE_PWT      ? 't' : 'b',
+			       pgprot & _PAGE_PCD      ? 'u' : 'c',
+			       pgprot & _PAGE_ACCESSED ? 'a' : '-',
+			       pgprot & _PAGE_DIRTY    ? 'd' : '-',
+			       pgprot & _PAGE_PSE      ? 'm' : 'k',
+			       pgprot & _PAGE_GLOBAL   ? 'g' : 'l' );
+#endif
+		DRM_PROC_PRINT("\n");
+#if 0
+		for (i = vma->vm_start; i < vma->vm_end; i += PAGE_SIZE) {
+			pgd = pgd_offset(vma->vm_mm, i);
+			pmd = pmd_offset(pgd, i);
+			pte = pte_offset(pmd, i);
+			if (pte_present(*pte)) {
+				address = __pa(pte_page(*pte))
+					+ (i & (PAGE_SIZE-1));
+				DRM_PROC_PRINT("      0x%08lx -> 0x%08lx"
+					       " %c%c%c%c%c\n",
+					       i,
+					       address,
+					       pte_read(*pte)  ? 'r' : '-',
+					       pte_write(*pte) ? 'w' : '-',
+					       pte_exec(*pte)  ? 'x' : '-',
+					       pte_dirty(*pte) ? 'd' : '-',
+					       pte_young(*pte) ? 'a' : '-' );
+			} else {
+				DRM_PROC_PRINT("      0x%08lx\n", i);
+			}
+		}
+#endif
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
+			 int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_vma_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+#endif
+
+
+#if __HAVE_DMA_HISTOGRAM
+static int DRM(_histo_info)(char *buf, char **start, off_t offset, int request,
+			    int *eof, void *data)
+{
+	drm_device_t	 *dev = (drm_device_t *)data;
+	int              len  = 0;
+	drm_device_dma_t *dma = dev->dma;
+	int		 i;
+	unsigned long	 slot_value = DRM_DMA_HISTOGRAM_INITIAL;
+	unsigned long	 prev_value = 0;
+	drm_buf_t	 *buffer;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("general statistics:\n");
+	DRM_PROC_PRINT("total	 %10u\n", atomic_read(&dev->histo.total));
+	DRM_PROC_PRINT("open	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_OPENS]));
+	DRM_PROC_PRINT("close	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_CLOSES]));
+	DRM_PROC_PRINT("ioctl	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_IOCTLS]));
+
+	DRM_PROC_PRINT("\nlock statistics:\n");
+	DRM_PROC_PRINT("locks	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_LOCKS]));
+	DRM_PROC_PRINT("unlocks	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_UNLOCKS]));
+
+	if (dma) {
+#if 0
+		DRM_PROC_PRINT("\ndma statistics:\n");
+		DRM_PROC_PRINT("prio	 %10u\n",
+			       atomic_read(&dma->total_prio));
+		DRM_PROC_PRINT("bytes	 %10u\n",
+			       atomic_read(&dma->total_bytes));
+		DRM_PROC_PRINT("dmas	 %10u\n",
+			       atomic_read(&dma->total_dmas));
+		DRM_PROC_PRINT("missed:\n");
+		DRM_PROC_PRINT("  dma	 %10u\n",
+			       atomic_read(&dma->total_missed_dma));
+		DRM_PROC_PRINT("  lock	 %10u\n",
+			       atomic_read(&dma->total_missed_lock));
+		DRM_PROC_PRINT("  free	 %10u\n",
+			       atomic_read(&dma->total_missed_free));
+		DRM_PROC_PRINT("  sched	 %10u\n",
+			       atomic_read(&dma->total_missed_sched));
+		DRM_PROC_PRINT("tried	 %10u\n",
+			       atomic_read(&dma->total_tried));
+		DRM_PROC_PRINT("hit	 %10u\n",
+			       atomic_read(&dma->total_hit));
+		DRM_PROC_PRINT("lost	 %10u\n",
+			       atomic_read(&dma->total_lost));
+#endif
+
+		buffer = dma->next_buffer;
+		if (buffer) {
+			DRM_PROC_PRINT("next_buffer %7d\n", buffer->idx);
+		} else {
+			DRM_PROC_PRINT("next_buffer    none\n");
+		}
+		buffer = dma->this_buffer;
+		if (buffer) {
+			DRM_PROC_PRINT("this_buffer %7d\n", buffer->idx);
+		} else {
+			DRM_PROC_PRINT("this_buffer    none\n");
+		}
+	}
+
+
+	DRM_PROC_PRINT("\nvalues:\n");
+	if (dev->lock.hw_lock) {
+		DRM_PROC_PRINT("lock	       0x%08x\n",
+			       dev->lock.hw_lock->lock);
+	} else {
+		DRM_PROC_PRINT("lock		     none\n");
+	}
+	DRM_PROC_PRINT("context_flag   0x%08lx\n", dev->context_flag);
+	DRM_PROC_PRINT("interrupt_flag 0x%08lx\n", dev->interrupt_flag);
+	DRM_PROC_PRINT("dma_flag       0x%08lx\n", dev->dma_flag);
+
+	DRM_PROC_PRINT("queue_count    %10d\n",	 dev->queue_count);
+	DRM_PROC_PRINT("last_context   %10d\n",	 dev->last_context);
+	DRM_PROC_PRINT("last_switch    %10lu\n", dev->last_switch);
+	DRM_PROC_PRINT("last_checked   %10d\n",	 dev->last_checked);
+
+
+	DRM_PROC_PRINT("\n		       q2d	  d2c	     c2f"
+		       "	q2c	   q2f	      dma	 sch"
+		       "	ctx	  lacq	     lhld\n\n");
+	for (i = 0; i < DRM_DMA_HISTOGRAM_SLOTS; i++) {
+		DRM_PROC_PRINT("%s %10lu %10u %10u %10u %10u %10u"
+			       " %10u %10u %10u %10u %10u\n",
+			       i == DRM_DMA_HISTOGRAM_SLOTS - 1 ? ">=" : "< ",
+			       i == DRM_DMA_HISTOGRAM_SLOTS - 1
+			       ? prev_value : slot_value ,
+
+			       atomic_read(&dev->histo
+					   .queued_to_dispatched[i]),
+			       atomic_read(&dev->histo
+					   .dispatched_to_completed[i]),
+			       atomic_read(&dev->histo
+					   .completed_to_freed[i]),
+
+			       atomic_read(&dev->histo
+					   .queued_to_completed[i]),
+			       atomic_read(&dev->histo
+					   .queued_to_freed[i]),
+			       atomic_read(&dev->histo.dma[i]),
+			       atomic_read(&dev->histo.schedule[i]),
+			       atomic_read(&dev->histo.ctx[i]),
+			       atomic_read(&dev->histo.lacq[i]),
+			       atomic_read(&dev->histo.lhld[i]));
+		prev_value = slot_value;
+		slot_value = DRM_DMA_HISTOGRAM_NEXT(slot_value);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(histo_info)(char *buf, char **start, off_t offset, int request,
+			   int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_histo_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+#endif
diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c
new file mode 100644
index 00000000..fb51926b
--- /dev/null
+++ b/linux-core/drm_vm.c
@@ -0,0 +1,416 @@
+/* drm_vm.h -- Memory mapping for DRM -*- linux-c -*-
+ * Created: Mon Jan  4 08:58:31 1999 by faith@valinux.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+struct vm_operations_struct   drm_vm_ops = {
+	nopage:	 DRM(vm_nopage),
+	open:	 DRM(vm_open),
+	close:	 DRM(vm_close),
+};
+
+struct vm_operations_struct   drm_vm_shm_ops = {
+	nopage:	 DRM(vm_shm_nopage),
+	open:	 DRM(vm_open),
+	close:	 DRM(vm_shm_close),
+};
+
+struct vm_operations_struct   drm_vm_dma_ops = {
+	nopage:	 DRM(vm_dma_nopage),
+	open:	 DRM(vm_open),
+	close:	 DRM(vm_close),
+};
+
+#if LINUX_VERSION_CODE < 0x020317
+unsigned long DRM(vm_nopage)(struct vm_area_struct *vma,
+			     unsigned long address,
+			     int write_access)
+#else
+				/* Return type changed in 2.3.23 */
+struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
+			    unsigned long address,
+			    int write_access)
+#endif
+{
+	return NOPAGE_SIGBUS;		/* Disallow mremap */
+}
+
+#if LINUX_VERSION_CODE < 0x020317
+unsigned long DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				 unsigned long address,
+				 int write_access)
+#else
+				/* Return type changed in 2.3.23 */
+struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				unsigned long address,
+				int write_access)
+#endif
+{
+#if LINUX_VERSION_CODE >= 0x020300
+	drm_map_t	 *map	 = (drm_map_t *)vma->vm_private_data;
+#else
+	drm_map_t	 *map	 = (drm_map_t *)vma->vm_pte;
+#endif
+	unsigned long	 physical;
+	unsigned long	 offset;
+	unsigned long	 i;
+	pgd_t		 *pgd;
+	pmd_t		 *pmd;
+	pte_t		 *pte;
+
+	if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */
+	if (!map)    		   return NOPAGE_OOM;  /* Nothing allocated */
+
+	offset	 = address - vma->vm_start;
+	i = (unsigned long)map->handle + offset;
+	/* We have to walk page tables here because we need large SAREA's, and
+	 * they need to be virtually contigious in kernel space.
+	 */
+	pgd = pgd_offset_k( i );
+	if( !pgd_present( *pgd ) ) return NOPAGE_OOM;
+	pmd = pmd_offset( pgd, i );
+	if( !pmd_present( *pmd ) ) return NOPAGE_OOM;
+	pte = pte_offset( pmd, i );
+	if( !pte_present( *pte ) ) return NOPAGE_OOM;
+	physical = (unsigned long)pte_page( *pte )->virtual;
+	atomic_inc(&virt_to_page(physical)->count); /* Dec. by kernel */
+
+	DRM_DEBUG("0x%08lx => 0x%08lx\n", address, physical);
+#if LINUX_VERSION_CODE < 0x020317
+	return physical;
+#else
+	return virt_to_page(physical);
+#endif
+}
+
+/* Special close routine which deletes map information if we are the last
+ * person to close a mapping and its not in the global maplist.
+ */
+
+void DRM(vm_shm_close)(struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= vma->vm_file->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_vma_entry_t *pt, *prev;
+	drm_map_t *map;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+	int found_maps = 0;
+
+	DRM_DEBUG("0x%08lx,0x%08lx\n",
+		  vma->vm_start, vma->vm_end - vma->vm_start);
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_dec(&dev->vma_count);
+
+#if LINUX_VERSION_CODE >= 0x020300
+	map = vma->vm_private_data;
+#else
+	map = vma->vm_pte;
+#endif
+
+	down(&dev->struct_sem);
+	for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+#if LINUX_VERSION_CODE >= 0x020300
+		if (pt->vma->vm_private_data == map) found_maps++;
+#else
+		if (pt->vma->vm_pte == map) found_maps++;
+#endif
+		if (pt->vma == vma) {
+			if (prev) {
+				prev->next = pt->next;
+			} else {
+				dev->vmalist = pt->next;
+			}
+			DRM(free)(pt, sizeof(*pt), DRM_MEM_VMAS);
+		}
+	}
+	/* We were the only map that was found */
+	if(found_maps == 1 &&
+	   map->flags & _DRM_REMOVABLE) {
+		/* Check to see if we are in the maplist, if we are not, then
+		 * we delete this mappings information.
+		 */
+		found_maps = 0;
+		list = &dev->maplist->head;
+		list_for_each(list, &dev->maplist->head) {
+			r_list = (drm_map_list_t *) list;
+			if (r_list->map == map) found_maps++;
+		}
+
+		if(!found_maps) {
+			switch (map->type) {
+			case _DRM_REGISTERS:
+			case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+				if (map->mtrr >= 0) {
+					int retcode;
+					retcode = mtrr_del(map->mtrr,
+							   map->offset,
+							   map->size);
+					DRM_DEBUG("mtrr_del = %d\n", retcode);
+				}
+#endif
+				DRM(ioremapfree)(map->handle, map->size);
+				break;
+			case _DRM_SHM:
+				vfree(map->handle);
+				break;
+			case _DRM_AGP:
+				break;
+			}
+			DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+		}
+	}
+	up(&dev->struct_sem);
+}
+
+#if LINUX_VERSION_CODE < 0x020317
+unsigned long DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				 unsigned long address,
+				 int write_access)
+#else
+				/* Return type changed in 2.3.23 */
+struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				unsigned long address,
+				int write_access)
+#endif
+{
+	drm_file_t	 *priv	 = vma->vm_file->private_data;
+	drm_device_t	 *dev	 = priv->dev;
+	drm_device_dma_t *dma	 = dev->dma;
+	unsigned long	 physical;
+	unsigned long	 offset;
+	unsigned long	 page;
+
+	if (!dma)		   return NOPAGE_SIGBUS; /* Error */
+	if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */
+	if (!dma->pagelist)	   return NOPAGE_OOM ; /* Nothing allocated */
+
+	offset	 = address - vma->vm_start; /* vm_[pg]off[set] should be 0 */
+	page	 = offset >> PAGE_SHIFT;
+	physical = dma->pagelist[page] + (offset & (~PAGE_MASK));
+	atomic_inc(&virt_to_page(physical)->count); /* Dec. by kernel */
+
+	DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", address, page, physical);
+#if LINUX_VERSION_CODE < 0x020317
+	return physical;
+#else
+	return virt_to_page(physical);
+#endif
+}
+
+void DRM(vm_open)(struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= vma->vm_file->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_vma_entry_t *vma_entry;
+
+	DRM_DEBUG("0x%08lx,0x%08lx\n",
+		  vma->vm_start, vma->vm_end - vma->vm_start);
+	atomic_inc(&dev->vma_count);
+#if LINUX_VERSION_CODE < 0x020333
+				/* The map can exist after the fd is closed. */
+	MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+
+	vma_entry = DRM(alloc)(sizeof(*vma_entry), DRM_MEM_VMAS);
+	if (vma_entry) {
+		down(&dev->struct_sem);
+		vma_entry->vma	= vma;
+		vma_entry->next = dev->vmalist;
+		vma_entry->pid	= current->pid;
+		dev->vmalist	= vma_entry;
+		up(&dev->struct_sem);
+	}
+}
+
+void DRM(vm_close)(struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= vma->vm_file->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_vma_entry_t *pt, *prev;
+
+	DRM_DEBUG("0x%08lx,0x%08lx\n",
+		  vma->vm_start, vma->vm_end - vma->vm_start);
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_dec(&dev->vma_count);
+
+	down(&dev->struct_sem);
+	for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+		if (pt->vma == vma) {
+			if (prev) {
+				prev->next = pt->next;
+			} else {
+				dev->vmalist = pt->next;
+			}
+			DRM(free)(pt, sizeof(*pt), DRM_MEM_VMAS);
+			break;
+		}
+	}
+	up(&dev->struct_sem);
+}
+
+int DRM(mmap_dma)(struct file *filp, struct vm_area_struct *vma)
+{
+	drm_file_t	 *priv	 = filp->private_data;
+	drm_device_t	 *dev;
+	drm_device_dma_t *dma;
+	unsigned long	 length	 = vma->vm_end - vma->vm_start;
+
+	lock_kernel();
+	dev	 = priv->dev;
+	dma	 = dev->dma;
+	DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
+		  vma->vm_start, vma->vm_end, VM_OFFSET(vma));
+
+				/* Length must match exact page count */
+	if (!dma || (length >> PAGE_SHIFT) != dma->page_count) {
+		unlock_kernel();
+		return -EINVAL;
+	}
+	unlock_kernel();
+
+	vma->vm_ops   = &drm_vm_dma_ops;
+	vma->vm_flags |= VM_LOCKED | VM_SHM; /* Don't swap */
+
+#if LINUX_VERSION_CODE < 0x020203 /* KERNEL_VERSION(2,2,3) */
+				/* In Linux 2.2.3 and above, this is
+				   handled in do_mmap() in mm/mmap.c. */
+	++filp->f_count;
+#endif
+	vma->vm_file  =	 filp;	/* Needed for drm_vm_open() */
+	DRM(vm_open)(vma);
+	return 0;
+}
+
+int DRM(mmap)(struct file *filp, struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_map_t	*map	= NULL;
+	drm_map_list_t  *r_list;
+	struct list_head *list;
+
+	DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
+		  vma->vm_start, vma->vm_end, VM_OFFSET(vma));
+
+	if (!VM_OFFSET(vma)) return DRM(mmap_dma)(filp, vma);
+
+				/* A sequential search of a linked list is
+				   fine here because: 1) there will only be
+				   about 5-10 entries in the list and, 2) a
+				   DRI client only has to do this mapping
+				   once, so it doesn't have to be optimized
+				   for performance, even if the list was a
+				   bit longer. */
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *)list;
+		map = r_list->map;
+		if (!map) continue;
+		if (map->offset == VM_OFFSET(vma)) break;
+	}
+
+	if (!map || ((map->flags&_DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
+		return -EPERM;
+
+				/* Check for valid size. */
+	if (map->size != vma->vm_end - vma->vm_start) return -EINVAL;
+
+	if (!capable(CAP_SYS_ADMIN) && (map->flags & _DRM_READ_ONLY)) {
+		vma->vm_flags &= VM_MAYWRITE;
+#if defined(__i386__)
+		pgprot_val(vma->vm_page_prot) &= ~_PAGE_RW;
+#else
+				/* Ye gads this is ugly.  With more thought
+                                   we could move this up higher and use
+                                   `protection_map' instead.  */
+		vma->vm_page_prot = __pgprot(pte_val(pte_wrprotect(
+			__pte(pgprot_val(vma->vm_page_prot)))));
+#endif
+	}
+
+	switch (map->type) {
+	case _DRM_FRAME_BUFFER:
+	case _DRM_REGISTERS:
+	case _DRM_AGP:
+		if (VM_OFFSET(vma) >= __pa(high_memory)) {
+#if defined(__i386__)
+			if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
+				pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
+				pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
+			}
+#elif defined(__ia64__)
+			if (map->type != _DRM_AGP)
+				vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+#endif
+			vma->vm_flags |= VM_IO;	/* not in core dump */
+		}
+		if (remap_page_range(vma->vm_start,
+				     VM_OFFSET(vma),
+				     vma->vm_end - vma->vm_start,
+				     vma->vm_page_prot))
+				return -EAGAIN;
+		DRM_DEBUG("   Type = %d; start = 0x%lx, end = 0x%lx,"
+			  " offset = 0x%lx\n",
+			  map->type,
+			  vma->vm_start, vma->vm_end, VM_OFFSET(vma));
+		vma->vm_ops = &drm_vm_ops;
+		break;
+	case _DRM_SHM:
+		vma->vm_ops = &drm_vm_shm_ops;
+#if LINUX_VERSION_CODE >= 0x020300
+		vma->vm_private_data = (void *)map;
+#else
+		vma->vm_pte = (unsigned long)map;
+#endif
+				/* Don't let this area swap.  Change when
+				   DRM_KERNEL advisory is supported. */
+		vma->vm_flags |= VM_LOCKED;
+		break;
+	default:
+		return -EINVAL;	/* This should never happen. */
+	}
+	vma->vm_flags |= VM_LOCKED | VM_SHM; /* Don't swap */
+
+#if LINUX_VERSION_CODE < 0x020203 /* KERNEL_VERSION(2,2,3) */
+				/* In Linux 2.2.3 and above, this is
+				   handled in do_mmap() in mm/mmap.c. */
+	++filp->f_count;
+#endif
+	vma->vm_file  =	 filp;	/* Needed for drm_vm_open() */
+	DRM(vm_open)(vma);
+	return 0;
+}
diff --git a/linux/drm_bufs.h b/linux/drm_bufs.h
new file mode 100644
index 00000000..63cfb0d4
--- /dev/null
+++ b/linux/drm_bufs.h
@@ -0,0 +1,829 @@
+/* drm_bufs.h -- Generic buffer template -*- linux-c -*-
+ * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include <linux/vmalloc.h>
+#include "drmP.h"
+
+#ifndef __HAVE_PCI_DMA
+#define __HAVE_PCI_DMA		0
+#endif
+
+#ifndef DRIVER_BUF_PRIV_T
+#define DRIVER_BUF_PRIV_T		u32
+#endif
+#ifndef DRIVER_AGP_BUFFERS_MAP
+#if __HAVE_AGP && __HAVE_DMA
+#error "You must define DRIVER_AGP_BUFFERS_MAP()"
+#else
+#define DRIVER_AGP_BUFFERS_MAP( dev )	NULL
+#endif
+#endif
+
+/*
+ * Compute order.  Can be made faster.
+ */
+int DRM(order)( unsigned long size )
+{
+	int order;
+	unsigned long tmp;
+
+	for ( order = 0, tmp = size ; tmp >>= 1 ; ++order );
+
+	if ( size & ~(1 << order) )
+		++order;
+
+	return order;
+}
+
+int DRM(addmap)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_map_t *map;
+	drm_map_list_t *list;
+
+	if ( !(filp->f_mode & 3) ) return -EACCES; /* Require read/write */
+
+	map = DRM(alloc)( sizeof(*map), DRM_MEM_MAPS );
+	if ( !map )
+		return -ENOMEM;
+
+	if ( copy_from_user( map, (drm_map_t *)arg, sizeof(*map) ) ) {
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EFAULT;
+	}
+
+	/* Only allow shared memory to be removable since we only keep enough
+	 * book keeping information about shared memory to allow for removal
+	 * when processes fork.
+	 */
+	if ( (map->flags & _DRM_REMOVABLE) && map->type != _DRM_SHM ) {
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EINVAL;
+	}
+	DRM_DEBUG( "offset = 0x%08lx, size = 0x%08lx, type = %d\n",
+		   map->offset, map->size, map->type );
+	if ( (map->offset & (~PAGE_MASK)) || (map->size & (~PAGE_MASK)) ) {
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EINVAL;
+	}
+	map->mtrr   = -1;
+	map->handle = 0;
+
+	switch ( map->type ) {
+	case _DRM_REGISTERS:
+	case _DRM_FRAME_BUFFER:
+#ifndef __sparc__
+		if ( map->offset + map->size < map->offset ||
+		     map->offset < virt_to_phys(high_memory) ) {
+			DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+			return -EINVAL;
+		}
+#endif
+#if __REALLY_HAVE_MTRR
+		if ( map->type == _DRM_FRAME_BUFFER ||
+		     (map->flags & _DRM_WRITE_COMBINING) ) {
+			map->mtrr = mtrr_add( map->offset, map->size,
+					      MTRR_TYPE_WRCOMB, 1 );
+		}
+#endif
+		map->handle = DRM(ioremap)( map->offset, map->size );
+		break;
+
+	case _DRM_SHM:
+		map->handle = vmalloc_32(map->size);
+		DRM_DEBUG( "%ld %d %p\n",
+			   map->size, DRM(order)( map->size ), map->handle );
+		if ( !map->handle ) {
+			DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+			return -ENOMEM;
+		}
+		map->offset = (unsigned long)map->handle;
+		if ( map->flags & _DRM_CONTAINS_LOCK ) {
+			dev->lock.hw_lock = map->handle; /* Pointer to lock */
+		}
+		break;
+#if __REALLY_HAVE_AGP
+	case _DRM_AGP:
+		map->offset = map->offset + dev->agp->base;
+		map->mtrr   = dev->agp->agp_mtrr; /* for getmap */
+		break;
+#endif
+	default:
+		DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		return -EINVAL;
+	}
+
+	list = DRM(alloc)(sizeof(*list), DRM_MEM_MAPS);
+	if(!list) {
+		DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+		return -EINVAL;
+	}
+	memset(list, 0, sizeof(*list));
+	list->map = map;
+
+	down(&dev->struct_sem);
+	list_add(&list->head, &dev->maplist->head);
+ 	up(&dev->struct_sem);
+
+	if ( copy_to_user( (drm_map_t *)arg, map, sizeof(*map) ) )
+		return -EFAULT;
+	if ( map->type != _DRM_SHM ) {
+		if ( copy_to_user( &((drm_map_t *)arg)->handle,
+				   &map->offset,
+				   sizeof(map->offset) ) )
+			return -EFAULT;
+	}
+	return 0;
+}
+
+
+/* Remove a map private from list and deallocate resources if the mapping
+ * isn't in use.
+ */
+
+int DRM(rmmap)(struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	struct list_head *list;
+	drm_map_list_t *r_list;
+	drm_vma_entry_t *pt, *prev;
+	drm_map_t *map;
+	drm_map_t request;
+	int found_maps = 0;
+
+	if (copy_from_user(&request, (drm_map_t *)arg,
+			   sizeof(request))) {
+		return -EFAULT;
+	}
+
+	down(&dev->struct_sem);
+	list = &dev->maplist->head;
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *) list;
+
+		if(r_list->map &&
+		   r_list->map->handle == request.handle &&
+		   r_list->map->flags & _DRM_REMOVABLE) break;
+	}
+
+	/* List has wrapped around to the head pointer, or its empty we didn't
+	 * find anything.
+	 */
+	if(list == (&dev->maplist->head)) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	map = r_list->map;
+	list_del(list);
+	DRM(free)(list, sizeof(*list), DRM_MEM_MAPS);
+
+	for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+#if LINUX_VERSION_CODE >= 0x020300
+		if (pt->vma->vm_private_data == map) found_maps++;
+#else
+		if (pt->vma->vm_pte == map) found_maps++;
+#endif
+	}
+
+	if(!found_maps) {
+		switch (map->type) {
+		case _DRM_REGISTERS:
+		case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+			if (map->mtrr >= 0) {
+				int retcode;
+				retcode = mtrr_del(map->mtrr,
+						   map->offset,
+						   map->size);
+				DRM_DEBUG("mtrr_del = %d\n", retcode);
+			}
+#endif
+			DRM(ioremapfree)(map->handle, map->size);
+			break;
+		case _DRM_SHM:
+			vfree(map->handle);
+			break;
+		case _DRM_AGP:
+			break;
+		}
+		DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+	}
+	up(&dev->struct_sem);
+	return 0;
+}
+
+#if __HAVE_DMA
+
+#if __REALLY_HAVE_AGP
+int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
+		      unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_desc_t request;
+	drm_buf_entry_t *entry;
+	drm_buf_t *buf;
+	unsigned long offset;
+	unsigned long agp_offset;
+	int count;
+	int order;
+	int size;
+	int alignment;
+	int page_order;
+	int total;
+	int byte_count;
+	int i;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	count = request.count;
+	order = DRM(order)( request.size );
+	size = 1 << order;
+
+	alignment  = (request.flags & _DRM_PAGE_ALIGN)
+		? PAGE_ALIGN(size) : size;
+	page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
+	total = PAGE_SIZE << page_order;
+
+	byte_count = 0;
+	agp_offset = dev->agp->base + request.agp_start;
+
+	DRM_DEBUG( "count:      %d\n",  count );
+	DRM_DEBUG( "order:      %d\n",  order );
+	DRM_DEBUG( "size:       %d\n",  size );
+	DRM_DEBUG( "agp_offset: %ld\n", agp_offset );
+	DRM_DEBUG( "alignment:  %d\n",  alignment );
+	DRM_DEBUG( "page_order: %d\n",  page_order );
+	DRM_DEBUG( "total:      %d\n",  total );
+
+	if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
+	if ( dev->queue_count ) return -EBUSY; /* Not while in use */
+
+	spin_lock( &dev->count_lock );
+	if ( dev->buf_use ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	atomic_inc( &dev->buf_alloc );
+	spin_unlock( &dev->count_lock );
+
+	down( &dev->struct_sem );
+	entry = &dma->bufs[order];
+	if ( entry->buf_count ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM; /* May only call once for each order */
+	}
+
+	entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist),
+				    DRM_MEM_BUFS );
+	if ( !entry->buflist ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;
+	}
+	memset( entry->buflist, 0, count * sizeof(*entry->buflist) );
+
+	entry->buf_size = size;
+	entry->page_order = page_order;
+
+	offset = 0;
+
+	while ( entry->buf_count < count ) {
+		buf          = &entry->buflist[entry->buf_count];
+		buf->idx     = dma->buf_count + entry->buf_count;
+		buf->total   = alignment;
+		buf->order   = order;
+		buf->used    = 0;
+
+		buf->offset  = (dma->byte_count + offset);
+		buf->bus_address = agp_offset + offset;
+		buf->address = (void *)(agp_offset + offset);
+		buf->next    = NULL;
+		buf->waiting = 0;
+		buf->pending = 0;
+		init_waitqueue_head( &buf->dma_wait );
+		buf->pid     = 0;
+
+		buf->dev_priv_size = sizeof(DRIVER_BUF_PRIV_T);
+		buf->dev_private = DRM(alloc)( sizeof(DRIVER_BUF_PRIV_T),
+					       DRM_MEM_BUFS );
+		memset( buf->dev_private, 0, buf->dev_priv_size );
+
+#if __HAVE_DMA_HISTOGRAM
+		buf->time_queued = 0;
+		buf->time_dispatched = 0;
+		buf->time_completed = 0;
+		buf->time_freed = 0;
+#endif
+		DRM_DEBUG( "buffer %d @ %p\n",
+			   entry->buf_count, buf->address );
+
+		offset += alignment;
+		entry->buf_count++;
+		byte_count += PAGE_SIZE << page_order;
+	}
+
+	DRM_DEBUG( "byte_count: %d\n", byte_count );
+
+	dma->buflist = DRM(realloc)( dma->buflist,
+				     dma->buf_count * sizeof(*dma->buflist),
+				     (dma->buf_count + entry->buf_count)
+				     * sizeof(*dma->buflist),
+				     DRM_MEM_BUFS );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		dma->buflist[i + dma->buf_count] = &entry->buflist[i];
+	}
+
+	dma->buf_count += entry->buf_count;
+	dma->byte_count += byte_count;
+
+	DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
+	DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
+
+#if __HAVE_DMA_FREELIST
+	DRM(freelist_create)( &entry->freelist, entry->buf_count );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
+	}
+#endif
+	up( &dev->struct_sem );
+
+	request.count = entry->buf_count;
+	request.size = size;
+
+	if ( copy_to_user( (drm_buf_desc_t *)arg, &request, sizeof(request) ) )
+		return -EFAULT;
+
+	dma->flags = _DRM_DMA_USE_AGP;
+
+	atomic_dec( &dev->buf_alloc );
+	return 0;
+}
+#endif /* __REALLY_HAVE_AGP */
+
+#if __HAVE_PCI_DMA
+int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
+		      unsigned int cmd, unsigned long arg )
+{
+   	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_desc_t request;
+	int count;
+	int order;
+	int size;
+	int total;
+	int page_order;
+	drm_buf_entry_t *entry;
+	unsigned long page;
+	drm_buf_t *buf;
+	int alignment;
+	unsigned long offset;
+	int i;
+	int byte_count;
+	int page_count;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	count = request.count;
+	order = DRM(order)( request.size );
+	size = 1 << order;
+
+	DRM_DEBUG( "count=%d, size=%d (%d), order=%d, queue_count=%d\n",
+		   request.count, request.size, size,
+		   order, dev->queue_count );
+
+	if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
+	if ( dev->queue_count ) return -EBUSY; /* Not while in use */
+
+	alignment = (request.flags & _DRM_PAGE_ALIGN)
+		? PAGE_ALIGN(size) : size;
+	page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
+	total = PAGE_SIZE << page_order;
+
+	spin_lock( &dev->count_lock );
+	if ( dev->buf_use ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	atomic_inc( &dev->buf_alloc );
+	spin_unlock( &dev->count_lock );
+
+	down( &dev->struct_sem );
+	entry = &dma->bufs[order];
+	if ( entry->buf_count ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;	/* May only call once for each order */
+	}
+
+	entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist),
+				    DRM_MEM_BUFS );
+	if ( !entry->buflist ) {
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;
+	}
+	memset( entry->buflist, 0, count * sizeof(*entry->buflist) );
+
+	entry->seglist = DRM(alloc)( count * sizeof(*entry->seglist),
+				    DRM_MEM_SEGS );
+	if ( !entry->seglist ) {
+		DRM(free)( entry->buflist,
+			  count * sizeof(*entry->buflist),
+			  DRM_MEM_BUFS );
+		up( &dev->struct_sem );
+		atomic_dec( &dev->buf_alloc );
+		return -ENOMEM;
+	}
+	memset( entry->seglist, 0, count * sizeof(*entry->seglist) );
+
+	dma->pagelist = DRM(realloc)( dma->pagelist,
+				      dma->page_count * sizeof(*dma->pagelist),
+				      (dma->page_count + (count << page_order))
+				      * sizeof(*dma->pagelist),
+				      DRM_MEM_PAGES );
+	DRM_DEBUG( "pagelist: %d entries\n",
+		   dma->page_count + (count << page_order) );
+
+	entry->buf_size	= size;
+	entry->page_order = page_order;
+	byte_count = 0;
+	page_count = 0;
+
+	while ( entry->buf_count < count ) {
+		page = DRM(alloc_pages)( page_order, DRM_MEM_DMA );
+		if ( !page ) break;
+		entry->seglist[entry->seg_count++] = page;
+		for ( i = 0 ; i < (1 << page_order) ; i++ ) {
+			DRM_DEBUG( "page %d @ 0x%08lx\n",
+				   dma->page_count + page_count,
+				   page + PAGE_SIZE * i );
+			dma->pagelist[dma->page_count + page_count++]
+				= page + PAGE_SIZE * i;
+		}
+		for ( offset = 0 ;
+		      offset + size <= total && entry->buf_count < count ;
+		      offset += alignment, ++entry->buf_count ) {
+			buf	     = &entry->buflist[entry->buf_count];
+			buf->idx     = dma->buf_count + entry->buf_count;
+			buf->total   = alignment;
+			buf->order   = order;
+			buf->used    = 0;
+			buf->offset  = (dma->byte_count + byte_count + offset);
+			buf->address = (void *)(page + offset);
+			buf->next    = NULL;
+			buf->waiting = 0;
+			buf->pending = 0;
+			init_waitqueue_head( &buf->dma_wait );
+			buf->pid     = 0;
+#if __HAVE_DMA_HISTOGRAM
+			buf->time_queued     = 0;
+			buf->time_dispatched = 0;
+			buf->time_completed  = 0;
+			buf->time_freed      = 0;
+#endif
+			DRM_DEBUG( "buffer %d @ %p\n",
+				   entry->buf_count, buf->address );
+		}
+		byte_count += PAGE_SIZE << page_order;
+	}
+
+	dma->buflist = DRM(realloc)( dma->buflist,
+				     dma->buf_count * sizeof(*dma->buflist),
+				     (dma->buf_count + entry->buf_count)
+				     * sizeof(*dma->buflist),
+				     DRM_MEM_BUFS );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		dma->buflist[i + dma->buf_count] = &entry->buflist[i];
+	}
+
+	dma->buf_count += entry->buf_count;
+	dma->seg_count += entry->seg_count;
+	dma->page_count += entry->seg_count << page_order;
+	dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
+
+#if __HAVE_DMA_FREELIST
+	DRM(freelist_create)( &entry->freelist, entry->buf_count );
+	for ( i = 0 ; i < entry->buf_count ; i++ ) {
+		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
+	}
+#endif
+	up( &dev->struct_sem );
+
+	request.count = entry->buf_count;
+	request.size = size;
+
+	if ( copy_to_user( (drm_buf_desc_t *)arg, &request, sizeof(request) ) )
+		return -EFAULT;
+
+	atomic_dec( &dev->buf_alloc );
+	return 0;
+}
+#endif /* __HAVE_PCI_DMA */
+
+int DRM(addbufs)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_buf_desc_t request;
+
+	if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+#if __REALLY_HAVE_AGP
+	if ( request.flags & _DRM_AGP_BUFFER )
+		return DRM(addbufs_agp)( inode, filp, cmd, arg );
+	else
+#endif
+#if __HAVE_PCI_DMA
+		return DRM(addbufs_pci)( inode, filp, cmd, arg );
+#else
+		return -EINVAL;
+#endif
+}
+
+int DRM(infobufs)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_info_t request;
+	int i;
+	int count;
+
+	if ( !dma ) return -EINVAL;
+
+	spin_lock( &dev->count_lock );
+	if ( atomic_read( &dev->buf_alloc ) ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	++dev->buf_use;		/* Can't allocate more after this call */
+	spin_unlock( &dev->count_lock );
+
+	if ( copy_from_user( &request,
+			     (drm_buf_info_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
+		if ( dma->bufs[i].buf_count ) ++count;
+	}
+
+	DRM_DEBUG( "count = %d\n", count );
+
+	if ( request.count >= count ) {
+		for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
+			if ( dma->bufs[i].buf_count ) {
+				drm_buf_desc_t *to = &request.list[count];
+				drm_buf_entry_t *from = &dma->bufs[i];
+				drm_freelist_t *list = &dma->bufs[i].freelist;
+				if ( copy_to_user( &to->count,
+						   &from->buf_count,
+						   sizeof(from->buf_count) ) ||
+				     copy_to_user( &to->size,
+						   &from->buf_size,
+						   sizeof(from->buf_size) ) ||
+				     copy_to_user( &to->low_mark,
+						   &list->low_mark,
+						   sizeof(list->low_mark) ) ||
+				     copy_to_user( &to->high_mark,
+						   &list->high_mark,
+						   sizeof(list->high_mark) ) )
+					return -EFAULT;
+
+				DRM_DEBUG( "%d %d %d %d %d\n",
+					   i,
+					   dma->bufs[i].buf_count,
+					   dma->bufs[i].buf_size,
+					   dma->bufs[i].freelist.low_mark,
+					   dma->bufs[i].freelist.high_mark );
+				++count;
+			}
+		}
+	}
+	request.count = count;
+
+	if ( copy_to_user( (drm_buf_info_t *)arg,
+			   &request,
+			   sizeof(request) ) )
+		return -EFAULT;
+
+	return 0;
+}
+
+int DRM(markbufs)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_desc_t request;
+	int order;
+	drm_buf_entry_t *entry;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request,
+			     (drm_buf_desc_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d, %d, %d\n",
+		   request.size, request.low_mark, request.high_mark );
+	order = DRM(order)( request.size );
+	if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
+	entry = &dma->bufs[order];
+
+	if ( request.low_mark < 0 || request.low_mark > entry->buf_count )
+		return -EINVAL;
+	if ( request.high_mark < 0 || request.high_mark > entry->buf_count )
+		return -EINVAL;
+
+	entry->freelist.low_mark  = request.low_mark;
+	entry->freelist.high_mark = request.high_mark;
+
+	return 0;
+}
+
+int DRM(freebufs)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	drm_buf_free_t request;
+	int i;
+	int idx;
+	drm_buf_t *buf;
+
+	if ( !dma ) return -EINVAL;
+
+	if ( copy_from_user( &request,
+			     (drm_buf_free_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", request.count );
+	for ( i = 0 ; i < request.count ; i++ ) {
+		if ( copy_from_user( &idx,
+				     &request.list[i],
+				     sizeof(idx) ) )
+			return -EFAULT;
+		if ( idx < 0 || idx >= dma->buf_count ) {
+			DRM_ERROR( "Index %d (of %d max)\n",
+				   idx, dma->buf_count - 1 );
+			return -EINVAL;
+		}
+		buf = dma->buflist[idx];
+		if ( buf->pid != current->pid ) {
+			DRM_ERROR( "Process %d freeing buffer owned by %d\n",
+				   current->pid, buf->pid );
+			return -EINVAL;
+		}
+		DRM(free_buffer)( dev, buf );
+	}
+
+	return 0;
+}
+
+int DRM(mapbufs)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_device_dma_t *dma = dev->dma;
+	int retcode = 0;
+	const int zero = 0;
+	unsigned long virtual;
+	unsigned long address;
+	drm_buf_map_t request;
+	int i;
+
+	if ( !dma ) return -EINVAL;
+
+	spin_lock( &dev->count_lock );
+	if ( atomic_read( &dev->buf_alloc ) ) {
+		spin_unlock( &dev->count_lock );
+		return -EBUSY;
+	}
+	dev->buf_use++;		/* Can't allocate more after this call */
+	spin_unlock( &dev->count_lock );
+
+	if ( copy_from_user( &request, (drm_buf_map_t *)arg,
+			     sizeof(request) ) )
+		return -EFAULT;
+
+	if ( request.count >= dma->buf_count ) {
+		if ( __HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP) ) {
+			drm_map_t *map = DRIVER_AGP_BUFFERS_MAP( dev );
+
+			if ( !map ) {
+				retcode = -EINVAL;
+				goto done;
+			}
+
+			down( &current->mm->mmap_sem );
+			virtual = do_mmap( filp, 0, map->size,
+					   PROT_READ | PROT_WRITE,
+					   MAP_SHARED,
+					   (unsigned long)map->offset );
+			up( &current->mm->mmap_sem );
+		} else {
+			down( &current->mm->mmap_sem );
+			virtual = do_mmap( filp, 0, dma->byte_count,
+					   PROT_READ | PROT_WRITE,
+					   MAP_SHARED, 0 );
+			up( &current->mm->mmap_sem );
+		}
+		if ( virtual > -1024UL ) {
+			/* Real error */
+			retcode = (signed long)virtual;
+			goto done;
+		}
+		request.virtual = (void *)virtual;
+
+		for ( i = 0 ; i < dma->buf_count ; i++ ) {
+			if ( copy_to_user( &request.list[i].idx,
+					   &dma->buflist[i]->idx,
+					   sizeof(request.list[0].idx) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+			if ( copy_to_user( &request.list[i].total,
+					   &dma->buflist[i]->total,
+					   sizeof(request.list[0].total) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+			if ( copy_to_user( &request.list[i].used,
+					   &zero,
+					   sizeof(zero) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+			address = virtual + dma->buflist[i]->offset; /* *** */
+			if ( copy_to_user( &request.list[i].address,
+					   &address,
+					   sizeof(address) ) ) {
+				retcode = -EFAULT;
+				goto done;
+			}
+		}
+	}
+ done:
+	request.count = dma->buf_count;
+	DRM_DEBUG( "%d buffers, retcode = %d\n", request.count, retcode );
+
+	if ( copy_to_user( (drm_buf_map_t *)arg, &request, sizeof(request) ) )
+		return -EFAULT;
+
+	return retcode;
+}
+
+#endif /* __HAVE_DMA */
diff --git a/linux/drm_context.h b/linux/drm_context.h
new file mode 100644
index 00000000..4ac896ef
--- /dev/null
+++ b/linux/drm_context.h
@@ -0,0 +1,760 @@
+/* drm_context.h -- IOCTLs for generic contexts -*- linux-c -*-
+ * Created: Fri Nov 24 18:31:37 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+#if __HAVE_CTX_BITMAP
+
+/* ================================================================
+ * Context bitmap support
+ */
+
+void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle )
+{
+	if ( ctx_handle < 0 ) goto failed;
+	if ( !dev->ctx_bitmap ) goto failed;
+
+	if ( ctx_handle < DRM_MAX_CTXBITMAP ) {
+		down(&dev->struct_sem);
+		clear_bit( ctx_handle, dev->ctx_bitmap );
+		dev->context_sareas[ctx_handle] = NULL;
+		up(&dev->struct_sem);
+		return;
+	}
+failed:
+       	DRM_ERROR( "Attempt to free invalid context handle: %d\n",
+		   ctx_handle );
+       	return;
+}
+
+int DRM(ctxbitmap_next)( drm_device_t *dev )
+{
+	int bit;
+
+	if(!dev->ctx_bitmap) return -1;
+
+	down(&dev->struct_sem);
+	bit = find_first_zero_bit( dev->ctx_bitmap, DRM_MAX_CTXBITMAP );
+	if ( bit < DRM_MAX_CTXBITMAP ) {
+		set_bit( bit, dev->ctx_bitmap );
+	   	DRM_DEBUG( "drm_ctxbitmap_next bit : %d\n", bit );
+		if((bit+1) > dev->max_context) {
+			dev->max_context = (bit+1);
+			if(dev->context_sareas) {
+				dev->context_sareas = DRM(realloc)(
+					dev->context_sareas,
+					(dev->max_context - 1) * 
+					sizeof(*dev->context_sareas),
+					dev->max_context * 
+					sizeof(*dev->context_sareas),
+					DRM_MEM_MAPS);
+				dev->context_sareas[bit] = NULL;
+			} else {
+				/* max_context == 1 at this point */
+				dev->context_sareas = DRM(alloc)(
+						dev->max_context * 
+						sizeof(*dev->context_sareas),
+						DRM_MEM_MAPS);
+				dev->context_sareas[bit] = NULL;
+			}
+		}
+		up(&dev->struct_sem);
+		return bit;
+	}
+	up(&dev->struct_sem);
+	return -1;
+}
+
+int DRM(ctxbitmap_init)( drm_device_t *dev )
+{
+	int i;
+   	int temp;
+
+	down(&dev->struct_sem);
+	dev->ctx_bitmap = (unsigned long *) DRM(alloc)( PAGE_SIZE,
+							DRM_MEM_CTXBITMAP );
+	if ( dev->ctx_bitmap == NULL ) {
+		up(&dev->struct_sem);
+		return -ENOMEM;
+	}
+	memset( (void *)dev->ctx_bitmap, 0, PAGE_SIZE );
+	dev->context_sareas = NULL;
+	dev->max_context = -1;
+	up(&dev->struct_sem);
+
+	for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
+		temp = DRM(ctxbitmap_next)( dev );
+	   	DRM_DEBUG( "drm_ctxbitmap_init : %d\n", temp );
+	}
+
+	return 0;
+}
+
+void DRM(ctxbitmap_cleanup)( drm_device_t *dev )
+{
+	down(&dev->struct_sem);
+	if( dev->context_sareas ) DRM(free)( dev->context_sareas,
+					     sizeof(*dev->context_sareas) * 
+					     dev->max_context,
+					     DRM_MEM_MAPS );
+	DRM(free)( (void *)dev->ctx_bitmap, PAGE_SIZE, DRM_MEM_CTXBITMAP );
+	up(&dev->struct_sem);
+}
+
+/* ================================================================
+ * Per Context SAREA Support
+ */
+
+int DRM(getsareactx)(struct inode *inode, struct file *filp,
+		     unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_priv_map_t request;
+	drm_map_t *map;
+
+	if (copy_from_user(&request,
+			   (drm_ctx_priv_map_t *)arg,
+			   sizeof(request)))
+		return -EFAULT;
+
+	down(&dev->struct_sem);
+	if ((int)request.ctx_id >= dev->max_context) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+
+	map = dev->context_sareas[request.ctx_id];
+	up(&dev->struct_sem);
+
+	request.handle = map->handle;
+	if (copy_to_user((drm_ctx_priv_map_t *)arg, &request, sizeof(request)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(setsareactx)(struct inode *inode, struct file *filp,
+		     unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_priv_map_t request;
+	drm_map_t *map = NULL;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+
+	if (copy_from_user(&request,
+			   (drm_ctx_priv_map_t *)arg,
+			   sizeof(request)))
+		return -EFAULT;
+
+	down(&dev->struct_sem);
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *)list;
+		if(r_list->map &&
+		   r_list->map->handle == request.handle) break;
+	}
+	if (list == &(dev->maplist->head)) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	map = r_list->map;
+	up(&dev->struct_sem);
+
+	if (!map) return -EINVAL;
+
+	down(&dev->struct_sem);
+	if ((int)request.ctx_id >= dev->max_context) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	dev->context_sareas[request.ctx_id] = map;
+	up(&dev->struct_sem);
+	return 0;
+}
+
+/* ================================================================
+ * The actual DRM context handling routines
+ */
+
+int DRM(context_switch)( drm_device_t *dev, int old, int new )
+{
+        char buf[64];
+
+        if ( test_and_set_bit( 0, &dev->context_flag ) ) {
+                DRM_ERROR( "Reentering -- FIXME\n" );
+                return -EBUSY;
+        }
+
+#if __HAVE_DMA_HISTOGRAM
+        dev->ctx_start = get_cycles();
+#endif
+
+        DRM_DEBUG( "Context switch from %d to %d\n", old, new );
+
+        if ( new == dev->last_context ) {
+                clear_bit( 0, &dev->context_flag );
+                return 0;
+        }
+
+        if ( DRM(flags) & DRM_FLAG_NOCTX ) {
+                DRM(context_switch_complete)( dev, new );
+        } else {
+                sprintf( buf, "C %d %d\n", old, new );
+                DRM(write_string)( dev, buf );
+        }
+
+        return 0;
+}
+
+int DRM(context_switch_complete)( drm_device_t *dev, int new )
+{
+        dev->last_context = new;  /* PRE/POST: This is the _only_ writer. */
+        dev->last_switch  = jiffies;
+
+        if ( !_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ) {
+                DRM_ERROR( "Lock isn't held after context switch\n" );
+        }
+
+				/* If a context switch is ever initiated
+                                   when the kernel holds the lock, release
+                                   that lock here. */
+#if __HAVE_DMA_HISTOGRAM
+        atomic_inc( &dev->histo.ctx[DRM(histogram_slot)(get_cycles()
+							- dev->ctx_start)] );
+
+#endif
+        clear_bit( 0, &dev->context_flag );
+        wake_up( &dev->context_wait );
+
+        return 0;
+}
+
+int DRM(resctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_ctx_res_t res;
+	drm_ctx_t ctx;
+	int i;
+
+	if ( copy_from_user( &res, (drm_ctx_res_t *)arg, sizeof(res) ) )
+		return -EFAULT;
+
+	if ( res.count >= DRM_RESERVED_CONTEXTS ) {
+		memset( &ctx, 0, sizeof(ctx) );
+		for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
+			ctx.handle = i;
+			if ( copy_to_user( &res.contexts[i],
+					   &i, sizeof(i) ) )
+				return -EFAULT;
+		}
+	}
+	res.count = DRM_RESERVED_CONTEXTS;
+
+	if ( copy_to_user( (drm_ctx_res_t *)arg, &res, sizeof(res) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(addctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	ctx.handle = DRM(ctxbitmap_next)( dev );
+	if ( ctx.handle == DRM_KERNEL_CONTEXT ) {
+				/* Skip kernel's context and get a new one. */
+		ctx.handle = DRM(ctxbitmap_next)( dev );
+	}
+	DRM_DEBUG( "%d\n", ctx.handle );
+	if ( ctx.handle == -1 ) {
+		DRM_DEBUG( "Not enough free contexts.\n" );
+				/* Should this return -EBUSY instead? */
+		return -ENOMEM;
+	}
+
+	if ( copy_to_user( (drm_ctx_t *)arg, &ctx, sizeof(ctx) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(modctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	/* This does nothing */
+	return 0;
+}
+
+int DRM(getctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t*)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	/* This is 0, because we don't handle any context flags */
+	ctx.flags = 0;
+
+	if ( copy_to_user( (drm_ctx_t*)arg, &ctx, sizeof(ctx) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(switchctx)( struct inode *inode, struct file *filp,
+		    unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", ctx.handle );
+	return DRM(context_switch)( dev, dev->last_context, ctx.handle );
+}
+
+int DRM(newctx)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", ctx.handle );
+	DRM(context_switch_complete)( dev, ctx.handle );
+
+	return 0;
+}
+
+int DRM(rmctx)( struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ctx_t ctx;
+
+	if ( copy_from_user( &ctx, (drm_ctx_t *)arg, sizeof(ctx) ) )
+		return -EFAULT;
+
+	DRM_DEBUG( "%d\n", ctx.handle );
+	if ( ctx.handle == DRM_KERNEL_CONTEXT + 1 ) {
+		priv->remove_auth_on_close = 1;
+	}
+	if ( ctx.handle != DRM_KERNEL_CONTEXT ) {
+		DRM(ctxbitmap_free)( dev, ctx.handle );
+	}
+
+	return 0;
+}
+
+
+#else /* __HAVE_CTX_BITMAP */
+
+/* ================================================================
+ * Old-style context support
+ */
+
+
+int DRM(context_switch)(drm_device_t *dev, int old, int new)
+{
+	char	    buf[64];
+	drm_queue_t *q;
+
+#if 0
+	atomic_inc(&dev->total_ctx);
+#endif
+
+	if (test_and_set_bit(0, &dev->context_flag)) {
+		DRM_ERROR("Reentering -- FIXME\n");
+		return -EBUSY;
+	}
+
+#if __HAVE_DMA_HISTOGRAM
+	dev->ctx_start = get_cycles();
+#endif
+
+	DRM_DEBUG("Context switch from %d to %d\n", old, new);
+
+	if (new >= dev->queue_count) {
+		clear_bit(0, &dev->context_flag);
+		return -EINVAL;
+	}
+
+	if (new == dev->last_context) {
+		clear_bit(0, &dev->context_flag);
+		return 0;
+	}
+
+	q = dev->queuelist[new];
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+		atomic_dec(&q->use_count);
+		clear_bit(0, &dev->context_flag);
+		return -EINVAL;
+	}
+
+	if (DRM(flags) & DRM_FLAG_NOCTX) {
+		DRM(context_switch_complete)(dev, new);
+	} else {
+		sprintf(buf, "C %d %d\n", old, new);
+		DRM(write_string)(dev, buf);
+	}
+
+	atomic_dec(&q->use_count);
+
+	return 0;
+}
+
+int DRM(context_switch_complete)(drm_device_t *dev, int new)
+{
+	drm_device_dma_t *dma = dev->dma;
+
+	dev->last_context = new;  /* PRE/POST: This is the _only_ writer. */
+	dev->last_switch  = jiffies;
+
+	if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
+		DRM_ERROR("Lock isn't held after context switch\n");
+	}
+
+	if (!dma || !(dma->next_buffer && dma->next_buffer->while_locked)) {
+		if (DRM(lock_free)(dev, &dev->lock.hw_lock->lock,
+				  DRM_KERNEL_CONTEXT)) {
+			DRM_ERROR("Cannot free lock\n");
+		}
+	}
+
+#if __HAVE_DMA_HISTOGRAM
+	atomic_inc(&dev->histo.ctx[DRM(histogram_slot)(get_cycles()
+						      - dev->ctx_start)]);
+
+#endif
+	clear_bit(0, &dev->context_flag);
+	wake_up_interruptible(&dev->context_wait);
+
+	return 0;
+}
+
+static int DRM(init_queue)(drm_device_t *dev, drm_queue_t *q, drm_ctx_t *ctx)
+{
+	DRM_DEBUG("\n");
+
+	if (atomic_read(&q->use_count) != 1
+	    || atomic_read(&q->finalization)
+	    || atomic_read(&q->block_count)) {
+		DRM_ERROR("New queue is already in use: u%d f%d b%d\n",
+			  atomic_read(&q->use_count),
+			  atomic_read(&q->finalization),
+			  atomic_read(&q->block_count));
+	}
+
+	atomic_set(&q->finalization,  0);
+	atomic_set(&q->block_count,   0);
+	atomic_set(&q->block_read,    0);
+	atomic_set(&q->block_write,   0);
+	atomic_set(&q->total_queued,  0);
+	atomic_set(&q->total_flushed, 0);
+	atomic_set(&q->total_locks,   0);
+
+	init_waitqueue_head(&q->write_queue);
+	init_waitqueue_head(&q->read_queue);
+	init_waitqueue_head(&q->flush_queue);
+
+	q->flags = ctx->flags;
+
+	DRM(waitlist_create)(&q->waitlist, dev->dma->buf_count);
+
+	return 0;
+}
+
+
+/* drm_alloc_queue:
+PRE: 1) dev->queuelist[0..dev->queue_count] is allocated and will not
+	disappear (so all deallocation must be done after IOCTLs are off)
+     2) dev->queue_count < dev->queue_slots
+     3) dev->queuelist[i].use_count == 0 and
+	dev->queuelist[i].finalization == 0 if i not in use
+POST: 1) dev->queuelist[i].use_count == 1
+      2) dev->queue_count < dev->queue_slots */
+
+static int DRM(alloc_queue)(drm_device_t *dev)
+{
+	int	    i;
+	drm_queue_t *queue;
+	int	    oldslots;
+	int	    newslots;
+				/* Check for a free queue */
+	for (i = 0; i < dev->queue_count; i++) {
+		atomic_inc(&dev->queuelist[i]->use_count);
+		if (atomic_read(&dev->queuelist[i]->use_count) == 1
+		    && !atomic_read(&dev->queuelist[i]->finalization)) {
+			DRM_DEBUG("%d (free)\n", i);
+			return i;
+		}
+		atomic_dec(&dev->queuelist[i]->use_count);
+	}
+				/* Allocate a new queue */
+	down(&dev->struct_sem);
+
+	queue = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES);
+	memset(queue, 0, sizeof(*queue));
+	atomic_set(&queue->use_count, 1);
+
+	++dev->queue_count;
+	if (dev->queue_count >= dev->queue_slots) {
+		oldslots = dev->queue_slots * sizeof(*dev->queuelist);
+		if (!dev->queue_slots) dev->queue_slots = 1;
+		dev->queue_slots *= 2;
+		newslots = dev->queue_slots * sizeof(*dev->queuelist);
+
+		dev->queuelist = DRM(realloc)(dev->queuelist,
+					      oldslots,
+					      newslots,
+					      DRM_MEM_QUEUES);
+		if (!dev->queuelist) {
+			up(&dev->struct_sem);
+			DRM_DEBUG("out of memory\n");
+			return -ENOMEM;
+		}
+	}
+	dev->queuelist[dev->queue_count-1] = queue;
+
+	up(&dev->struct_sem);
+	DRM_DEBUG("%d (new)\n", dev->queue_count - 1);
+	return dev->queue_count - 1;
+}
+
+int DRM(resctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_ctx_res_t	res;
+	drm_ctx_t	ctx;
+	int		i;
+
+	DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
+	if (copy_from_user(&res, (drm_ctx_res_t *)arg, sizeof(res)))
+		return -EFAULT;
+	if (res.count >= DRM_RESERVED_CONTEXTS) {
+		memset(&ctx, 0, sizeof(ctx));
+		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
+			ctx.handle = i;
+			if (copy_to_user(&res.contexts[i],
+					 &i,
+					 sizeof(i)))
+				return -EFAULT;
+		}
+	}
+	res.count = DRM_RESERVED_CONTEXTS;
+	if (copy_to_user((drm_ctx_res_t *)arg, &res, sizeof(res)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(addctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	if ((ctx.handle = DRM(alloc_queue)(dev)) == DRM_KERNEL_CONTEXT) {
+				/* Init kernel's context and get a new one. */
+		DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+		ctx.handle = DRM(alloc_queue)(dev);
+	}
+	DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+	DRM_DEBUG("%d\n", ctx.handle);
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(modctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle < 0 || ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	if (DRM_BUFCOUNT(&q->waitlist)) {
+		atomic_dec(&q->use_count);
+		return -EBUSY;
+	}
+
+	q->flags = ctx.flags;
+
+	atomic_dec(&q->use_count);
+	return 0;
+}
+
+int DRM(getctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	ctx.flags = q->flags;
+	atomic_dec(&q->use_count);
+
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+
+	return 0;
+}
+
+int DRM(switchctx)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	return DRM(context_switch)(dev, dev->last_context, ctx.handle);
+}
+
+int DRM(newctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	DRM(context_switch_complete)(dev, ctx.handle);
+
+	return 0;
+}
+
+int DRM(rmctx)(struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+	drm_buf_t	*buf;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	atomic_inc(&q->finalization); /* Mark queue in finalization state */
+	atomic_sub(2, &q->use_count); /* Mark queue as unused (pending
+					 finalization) */
+
+	while (test_and_set_bit(0, &dev->interrupt_flag)) {
+		schedule();
+		if (signal_pending(current)) {
+			clear_bit(0, &dev->interrupt_flag);
+			return -EINTR;
+		}
+	}
+				/* Remove queued buffers */
+	while ((buf = DRM(waitlist_get)(&q->waitlist))) {
+		DRM(free_buffer)(dev, buf);
+	}
+	clear_bit(0, &dev->interrupt_flag);
+
+				/* Wakeup blocked processes */
+	wake_up_interruptible(&q->read_queue);
+	wake_up_interruptible(&q->write_queue);
+	wake_up_interruptible(&q->flush_queue);
+
+				/* Finalization over.  Queue is made
+				   available when both use_count and
+				   finalization become 0, which won't
+				   happen until all the waiting processes
+				   stop waiting. */
+	atomic_dec(&q->finalization);
+	return 0;
+}
+
+#endif /* __HAVE_CTX_BITMAP */
diff --git a/linux/drm_drv.h b/linux/drm_drv.h
new file mode 100644
index 00000000..7447ca6d
--- /dev/null
+++ b/linux/drm_drv.h
@@ -0,0 +1,938 @@
+/* drm_drv.h -- Generic driver template -*- linux-c -*-
+ * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * To use this template, you must at least define the following (samples
+ * given for the MGA driver):
+ *
+ * #define DRIVER_AUTHOR	"VA Linux Systems, Inc."
+ *
+ * #define DRIVER_NAME		"mga"
+ * #define DRIVER_DESC		"Matrox G200/G400"
+ * #define DRIVER_DATE		"20001127"
+ *
+ * #define DRIVER_MAJOR		2
+ * #define DRIVER_MINOR		0
+ * #define DRIVER_PATCHLEVEL	2
+ *
+ * #define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( mga_ioctls )
+ *
+ * #define DRM(x)		mga_##x
+ */
+
+#ifndef __MUST_HAVE_AGP
+#define __MUST_HAVE_AGP			0
+#endif
+#ifndef __HAVE_CTX_BITMAP
+#define __HAVE_CTX_BITMAP		0
+#endif
+#ifndef __HAVE_DMA_IRQ
+#define __HAVE_DMA_IRQ			0
+#endif
+#ifndef __HAVE_DMA_QUEUE
+#define __HAVE_DMA_QUEUE		0
+#endif
+#ifndef __HAVE_MULTIPLE_DMA_QUEUES
+#define __HAVE_MULTIPLE_DMA_QUEUES	0
+#endif
+#ifndef __HAVE_DMA_SCHEDULE
+#define __HAVE_DMA_SCHEDULE		0
+#endif
+#ifndef __HAVE_DMA_FLUSH
+#define __HAVE_DMA_FLUSH		0
+#endif
+#ifndef __HAVE_DMA_READY
+#define __HAVE_DMA_READY		0
+#endif
+#ifndef __HAVE_DMA_QUIESCENT
+#define __HAVE_DMA_QUIESCENT		0
+#endif
+#ifndef __HAVE_RELEASE
+#define __HAVE_RELEASE			0
+#endif
+#ifndef __HAVE_COUNTERS
+#define __HAVE_COUNTERS			0
+#endif
+
+#ifndef DRIVER_PREINIT
+#define DRIVER_PREINIT()
+#endif
+#ifndef DRIVER_POSTINIT
+#define DRIVER_POSTINIT()
+#endif
+#ifndef DRIVER_PRERELEASE
+#define DRIVER_PRERELEASE()
+#endif
+#ifndef DRIVER_PRETAKEDOWN
+#define DRIVER_PRETAKEDOWN()
+#endif
+#ifndef DRIVER_IOCTLS
+#define DRIVER_IOCTLS
+#endif
+
+
+static drm_device_t	DRM(device);
+static int              DRM(minor);
+
+static struct file_operations	DRM(fops) = {
+#if LINUX_VERSION_CODE >= 0x020400
+				/* This started being used during 2.4.0-test */
+	owner:   THIS_MODULE,
+#endif
+	open:	 DRM(open),
+	flush:	 DRM(flush),
+	release: DRM(release),
+	ioctl:	 DRM(ioctl),
+	mmap:	 DRM(mmap),
+	read:	 DRM(read),
+	fasync:	 DRM(fasync),
+	poll:	 DRM(poll),
+};
+
+
+static drm_ioctl_desc_t		  DRM(ioctls)[] = {
+	[DRM_IOCTL_NR(DRM_IOCTL_VERSION)]       = { DRM(version),     0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)]    = { DRM(getunique),   0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)]     = { DRM(getmagic),    0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)]     = { DRM(irq_busid),   0, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)]       = { DRM(getmap),      0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)]    = { DRM(getclient),   0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)]     = { DRM(getstats),    0, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)]    = { DRM(setunique),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)]         = { DRM(block),       1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)]       = { DRM(unblock),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)]    = { DRM(authmagic),   1, 1 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)]       = { DRM(addmap),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)]        = { DRM(rmmap),       1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { DRM(setsareactx), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { DRM(getsareactx), 1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)]       = { DRM(addctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)]        = { DRM(rmctx),       1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)]       = { DRM(modctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)]       = { DRM(getctx),      1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)]    = { DRM(switchctx),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)]       = { DRM(newctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)]       = { DRM(resctx),      1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)]      = { DRM(adddraw),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)]       = { DRM(rmdraw),      1, 1 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_LOCK)]	        = { DRM(lock),        1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)]        = { DRM(unlock),      1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(finish),      1, 0 },
+
+#if __HAVE_DMA
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)]      = { DRM(addbufs),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)]     = { DRM(markbufs),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)]     = { DRM(infobufs),    1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)]      = { DRM(mapbufs),     1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)]     = { DRM(freebufs),    1, 0 },
+
+	/* The DRM_IOCTL_DMA ioctl should be defined by the driver.
+	 */
+#if __HAVE_DMA_IRQ
+	[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)]       = { DRM(control),     1, 1 },
+#endif
+#endif
+
+#if __REALLY_HAVE_AGP
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)]   = { DRM(agp_acquire), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)]   = { DRM(agp_release), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)]    = { DRM(agp_enable),  1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)]      = { DRM(agp_info),    1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)]     = { DRM(agp_alloc),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)]      = { DRM(agp_free),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)]      = { DRM(agp_bind),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)]    = { DRM(agp_unbind),  1, 1 },
+#endif
+
+	DRIVER_IOCTLS
+};
+
+#define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( DRM(ioctls) )
+
+#ifdef MODULE
+static char *drm_opts = NULL;
+#endif
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_PARM( drm_opts, "s" );
+
+#ifndef MODULE
+/* DRM(options) is called by the kernel to parse command-line options
+ * passed via the boot-loader (e.g., LILO).  It calls the insmod option
+ * routine, drm_parse_drm.
+ */
+
+static int __init DRM(options)( char *str )
+{
+	DRM(parse_options)( str );
+	return 1;
+}
+
+__setup( DRIVER_NAME "=", DRM(options) );
+#endif
+
+static int DRM(setup)( drm_device_t *dev )
+{
+	int i;
+
+	atomic_set( &dev->ioctl_count, 0 );
+	atomic_set( &dev->vma_count, 0 );
+	dev->buf_use = 0;
+	atomic_set( &dev->buf_alloc, 0 );
+
+#if __HAVE_DMA
+	i = DRM(dma_setup)( dev );
+	if ( i < 0 )
+		return i;
+#endif
+
+	dev->counters  = 6 + __HAVE_COUNTERS;
+	dev->types[0]  = _DRM_STAT_LOCK;
+	dev->types[1]  = _DRM_STAT_OPENS;
+	dev->types[2]  = _DRM_STAT_CLOSES;
+	dev->types[3]  = _DRM_STAT_IOCTLS;
+	dev->types[4]  = _DRM_STAT_LOCKS;
+	dev->types[5]  = _DRM_STAT_UNLOCKS;
+#ifdef __HAVE_COUNTER6
+	dev->types[6]  = __HAVE_COUNTER6;
+#endif
+#ifdef __HAVE_COUNTER7
+	dev->types[7]  = __HAVE_COUNTER7;
+#endif
+#ifdef __HAVE_COUNTER8
+	dev->types[8]  = __HAVE_COUNTER8;
+#endif
+#ifdef __HAVE_COUNTER9
+	dev->types[9]  = __HAVE_COUNTER9;
+#endif
+#ifdef __HAVE_COUNTER10
+	dev->types[10] = __HAVE_COUNTER10;
+#endif
+#ifdef __HAVE_COUNTER11
+	dev->types[11] = __HAVE_COUNTER11;
+#endif
+#ifdef __HAVE_COUNTER12
+	dev->types[12] = __HAVE_COUNTER12;
+#endif
+#ifdef __HAVE_COUNTER13
+	dev->types[13] = __HAVE_COUNTER13;
+#endif
+#ifdef __HAVE_COUNTER14
+	dev->types[14] = __HAVE_COUNTER14;
+#endif
+#ifdef __HAVE_COUNTER15
+	dev->types[14] = __HAVE_COUNTER14;
+#endif
+
+	for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
+		atomic_set( &dev->counts[i], 0 );
+
+	for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+		dev->magiclist[i].head = NULL;
+		dev->magiclist[i].tail = NULL;
+	}
+
+	dev->maplist = DRM(alloc)(sizeof(*dev->maplist),
+				  DRM_MEM_MAPS);
+	if(dev->maplist == NULL) return -ENOMEM;
+	memset(dev->maplist, 0, sizeof(*dev->maplist));
+	INIT_LIST_HEAD(&dev->maplist->head);
+	dev->map_count = 0;
+
+	dev->vmalist = NULL;
+	dev->lock.hw_lock = NULL;
+	init_waitqueue_head( &dev->lock.lock_queue );
+	dev->queue_count = 0;
+	dev->queue_reserved = 0;
+	dev->queue_slots = 0;
+	dev->queuelist = NULL;
+	dev->irq = 0;
+	dev->context_flag = 0;
+	dev->interrupt_flag = 0;
+	dev->dma_flag = 0;
+	dev->last_context = 0;
+	dev->last_switch = 0;
+	dev->last_checked = 0;
+	init_timer( &dev->timer );
+	init_waitqueue_head( &dev->context_wait );
+
+	dev->ctx_start = 0;
+	dev->lck_start = 0;
+
+	dev->buf_rp = dev->buf;
+	dev->buf_wp = dev->buf;
+	dev->buf_end = dev->buf + DRM_BSZ;
+	dev->buf_async = NULL;
+	init_waitqueue_head( &dev->buf_readers );
+	init_waitqueue_head( &dev->buf_writers );
+
+	DRM_DEBUG( "\n" );
+
+	/* The kernel's context could be created here, but is now created
+	 * in drm_dma_enqueue.	This is more resource-efficient for
+	 * hardware that does not do DMA, but may mean that
+	 * drm_select_queue fails between the time the interrupt is
+	 * initialized and the time the queues are initialized.
+	 */
+	return 0;
+}
+
+
+static int DRM(takedown)( drm_device_t *dev )
+{
+	drm_magic_entry_t *pt, *next;
+	drm_map_t *map;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+	drm_vma_entry_t *vma, *vma_next;
+	int i;
+
+	DRM_DEBUG( "\n" );
+
+	DRIVER_PRETAKEDOWN();
+#if __HAVE_DMA_IRQ
+	if ( dev->irq ) DRM(irq_uninstall)( dev );
+#endif
+
+	down( &dev->struct_sem );
+	del_timer( &dev->timer );
+
+	if ( dev->devname ) {
+		DRM(free)( dev->devname, strlen( dev->devname ) + 1,
+			   DRM_MEM_DRIVER );
+		dev->devname = NULL;
+	}
+
+	if ( dev->unique ) {
+		DRM(free)( dev->unique, strlen( dev->unique ) + 1,
+			   DRM_MEM_DRIVER );
+		dev->unique = NULL;
+		dev->unique_len = 0;
+	}
+				/* Clear pid list */
+	for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+		for ( pt = dev->magiclist[i].head ; pt ; pt = next ) {
+			next = pt->next;
+			DRM(free)( pt, sizeof(*pt), DRM_MEM_MAGIC );
+		}
+		dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
+	}
+
+#if __REALLY_HAVE_AGP
+				/* Clear AGP information */
+	if ( dev->agp ) {
+		drm_agp_mem_t *entry;
+		drm_agp_mem_t *nexte;
+
+				/* Remove AGP resources, but leave dev->agp
+                                   intact until drv_cleanup is called. */
+		for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
+			nexte = entry->next;
+			if ( entry->bound ) DRM(unbind_agp)( entry->memory );
+			DRM(free_agp)( entry->memory, entry->pages );
+			DRM(free)( entry, sizeof(*entry), DRM_MEM_AGPLISTS );
+		}
+		dev->agp->memory = NULL;
+
+		if ( dev->agp->acquired ) DRM(agp_do_release)();
+
+		dev->agp->acquired = 0;
+		dev->agp->enabled  = 0;
+	}
+#endif
+
+				/* Clear vma list (only built for debugging) */
+	if ( dev->vmalist ) {
+		for ( vma = dev->vmalist ; vma ; vma = vma_next ) {
+			vma_next = vma->next;
+			DRM(free)( vma, sizeof(*vma), DRM_MEM_VMAS );
+		}
+		dev->vmalist = NULL;
+	}
+
+	if( dev->maplist ) {
+		list_for_each(list, &dev->maplist->head) {
+			r_list = (drm_map_list_t *)list;
+			map = r_list->map;
+			DRM(free)(r_list, sizeof(*r_list), DRM_MEM_MAPS);
+			if(!map) continue;
+
+			switch ( map->type ) {
+			case _DRM_REGISTERS:
+			case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+				if ( map->mtrr >= 0 ) {
+					int retcode;
+					retcode = mtrr_del( map->mtrr,
+							    map->offset,
+							    map->size );
+					DRM_DEBUG( "mtrr_del=%d\n", retcode );
+				}
+#endif
+				DRM(ioremapfree)( map->handle, map->size );
+				break;
+			case _DRM_SHM:
+				vfree(map->handle);
+				break;
+
+			case _DRM_AGP:
+				/* Do nothing here, because this is all
+				 * handled in the AGP/GART driver.
+				 */
+				break;
+			}
+ 			DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+ 		}
+		DRM(free)(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
+		dev->maplist = NULL;
+ 	}
+
+#if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES
+	if ( dev->queuelist ) {
+		for ( i = 0 ; i < dev->queue_count ; i++ ) {
+			DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist );
+			if ( dev->queuelist[i] ) {
+				DRM(free)( dev->queuelist[i],
+					  sizeof(*dev->queuelist[0]),
+					  DRM_MEM_QUEUES );
+				dev->queuelist[i] = NULL;
+			}
+		}
+		DRM(free)( dev->queuelist,
+			  dev->queue_slots * sizeof(*dev->queuelist),
+			  DRM_MEM_QUEUES );
+		dev->queuelist = NULL;
+	}
+	dev->queue_count = 0;
+#endif
+
+#if __HAVE_DMA
+	DRM(dma_takedown)( dev );
+#endif
+	if ( dev->lock.hw_lock ) {
+		dev->lock.hw_lock = NULL; /* SHM removed */
+		dev->lock.pid = 0;
+		wake_up_interruptible( &dev->lock.lock_queue );
+	}
+	up( &dev->struct_sem );
+
+	return 0;
+}
+
+/* drm_init is called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported).
+ */
+static int __init drm_init( void )
+{
+	drm_device_t *dev = &DRM(device);
+#if __HAVE_CTX_BITMAP
+	int retcode;
+#endif
+	DRM_DEBUG( "\n" );
+
+	memset( (void *)dev, 0, sizeof(*dev) );
+	dev->count_lock = SPIN_LOCK_UNLOCKED;
+	sema_init( &dev->struct_sem, 1 );
+
+#ifdef MODULE
+	DRM(parse_options)( drm_opts );
+#endif
+	DRIVER_PREINIT();
+
+	DRM(mem_init)();
+
+	if ((DRM(minor) = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0)
+		return -EPERM;
+	dev->device = MKDEV(DRM_MAJOR, DRM(minor) );
+	dev->name   = DRIVER_NAME;
+
+#if __REALLY_HAVE_AGP
+	dev->agp = DRM(agp_init)();
+#if __MUST_HAVE_AGP
+	if ( dev->agp == NULL ) {
+		DRM_ERROR( "Cannot initialize the agpgart module.\n" );
+		DRM(stub_unregister)(DRM(minor));
+		DRM(takedown)( dev );
+		return -ENOMEM;
+	}
+#endif
+#if __REALLY_HAVE_MTRR
+	if (dev->agp)
+		dev->agp->agp_mtrr = mtrr_add( dev->agp->agp_info.aper_base,
+				       dev->agp->agp_info.aper_size*1024*1024,
+				       MTRR_TYPE_WRCOMB,
+				       1 );
+#endif
+#endif
+
+#if __HAVE_CTX_BITMAP
+	retcode = DRM(ctxbitmap_init)( dev );
+	if( retcode ) {
+		DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
+		DRM(stub_unregister)(DRM(minor));
+		DRM(takedown)( dev );
+		return retcode;
+	}
+#endif
+
+	DRIVER_POSTINIT();
+
+	DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
+		  DRIVER_NAME,
+		  DRIVER_MAJOR,
+		  DRIVER_MINOR,
+		  DRIVER_PATCHLEVEL,
+		  DRIVER_DATE,
+		  DRM(minor) );
+
+	return 0;
+}
+
+/* drm_cleanup is called via cleanup_module at module unload time.
+ */
+static void __exit drm_cleanup( void )
+{
+	drm_device_t *dev = &DRM(device);
+
+	DRM_DEBUG( "\n" );
+
+	if ( DRM(stub_unregister)(DRM(minor)) ) {
+		DRM_ERROR( "Cannot unload module\n" );
+	} else {
+		DRM_INFO( "Module unloaded\n" );
+	}
+#if __HAVE_CTX_BITMAP
+	DRM(ctxbitmap_cleanup)( dev );
+#endif
+
+#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
+	if ( dev->agp && dev->agp->agp_mtrr ) {
+		int retval;
+		retval = mtrr_del( dev->agp->agp_mtrr,
+				   dev->agp->agp_info.aper_base,
+				   dev->agp->agp_info.aper_size*1024*1024 );
+		DRM_DEBUG( "mtrr_del=%d\n", retval );
+	}
+#endif
+
+	DRM(takedown)( dev );
+
+#if __REALLY_HAVE_AGP
+	if ( dev->agp ) {
+		DRM(agp_uninit)();
+		DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
+		dev->agp = NULL;
+	}
+#endif
+}
+
+module_init( drm_init );
+module_exit( drm_cleanup );
+
+
+int DRM(version)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_version_t version;
+	int len;
+
+	if ( copy_from_user( &version,
+			     (drm_version_t *)arg,
+			     sizeof(version) ) )
+		return -EFAULT;
+
+#define DRM_COPY( name, value )						\
+	len = strlen( value );						\
+	if ( len > name##_len ) len = name##_len;			\
+	name##_len = strlen( value );					\
+	if ( len && name ) {						\
+		if ( copy_to_user( name, value, len ) )			\
+			return -EFAULT;					\
+	}
+
+	version.version_major = DRIVER_MAJOR;
+	version.version_minor = DRIVER_MINOR;
+	version.version_patchlevel = DRIVER_PATCHLEVEL;
+
+	DRM_COPY( version.name, DRIVER_NAME );
+	DRM_COPY( version.date, DRIVER_DATE );
+	DRM_COPY( version.desc, DRIVER_DESC );
+
+	if ( copy_to_user( (drm_version_t *)arg,
+			   &version,
+			   sizeof(version) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(open)( struct inode *inode, struct file *filp )
+{
+	drm_device_t *dev = &DRM(device);
+	int retcode = 0;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	retcode = DRM(open_helper)( inode, filp, dev );
+	if ( !retcode ) {
+#if LINUX_VERSION_CODE < 0x020333
+		MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+		atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
+		spin_lock( &dev->count_lock );
+		if ( !dev->open_count++ ) {
+			spin_unlock( &dev->count_lock );
+			return DRM(setup)( dev );
+		}
+		spin_unlock( &dev->count_lock );
+	}
+
+	return retcode;
+}
+
+int DRM(release)( struct inode *inode, struct file *filp )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev;
+	int retcode = 0;
+
+	lock_kernel();
+	dev = priv->dev;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	DRIVER_PRERELEASE();
+
+	/* ========================================================
+	 * Begin inline drm_release
+	 */
+
+	DRM_DEBUG( "pid = %d, device = 0x%x, open_count = %d\n",
+		   current->pid, dev->device, dev->open_count );
+
+	if ( dev->lock.hw_lock &&
+	     _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
+	     dev->lock.pid == current->pid ) {
+		DRM_DEBUG( "Process %d dead, freeing lock for context %d\n",
+			   current->pid,
+			   _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
+#if __HAVE_RELEASE
+		DRIVER_RELEASE();
+#endif
+		DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+				_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
+
+				/* FIXME: may require heavy-handed reset of
+                                   hardware at this point, possibly
+                                   processed via a callback to the X
+                                   server. */
+	}
+#if __HAVE_RELEASE
+	else if ( dev->lock.hw_lock ) {
+		/* The lock is required to reclaim buffers */
+		DECLARE_WAITQUEUE( entry, current );
+		add_wait_queue( &dev->lock.lock_queue, &entry );
+		for (;;) {
+			current->state = TASK_INTERRUPTIBLE;
+			if ( !dev->lock.hw_lock ) {
+				/* Device has been unregistered */
+				retcode = -EINTR;
+				break;
+			}
+			if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+					     DRM_KERNEL_CONTEXT ) ) {
+				dev->lock.pid	    = priv->pid;
+				dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+				break;	/* Got lock */
+			}
+				/* Contention */
+#if 0
+			atomic_inc( &dev->total_sleeps );
+#endif
+			schedule();
+			if ( signal_pending( current ) ) {
+				retcode = -ERESTARTSYS;
+				break;
+			}
+		}
+		current->state = TASK_RUNNING;
+		remove_wait_queue( &dev->lock.lock_queue, &entry );
+		if( !retcode ) {
+			DRIVER_RELEASE();
+			DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+					DRM_KERNEL_CONTEXT );
+		}
+	}
+#elif __HAVE_DMA
+	DRM(reclaim_buffers)( dev, priv->pid );
+#endif
+
+	DRM(fasync)( -1, filp, 0 );
+
+	down( &dev->struct_sem );
+	if ( priv->remove_auth_on_close == 1 ) {
+		drm_file_t *temp = dev->file_first;
+		while ( temp ) {
+			temp->authenticated = 0;
+			temp = temp->next;
+		}
+	}
+	if ( priv->prev ) {
+		priv->prev->next = priv->next;
+	} else {
+		dev->file_first	 = priv->next;
+	}
+	if ( priv->next ) {
+		priv->next->prev = priv->prev;
+	} else {
+		dev->file_last	 = priv->prev;
+	}
+	up( &dev->struct_sem );
+
+	DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES );
+
+	/* ========================================================
+	 * End inline drm_release
+	 */
+
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
+	spin_lock( &dev->count_lock );
+	if ( !--dev->open_count ) {
+		if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) {
+			DRM_ERROR( "Device busy: %d %d\n",
+				   atomic_read( &dev->ioctl_count ),
+				   dev->blocked );
+			spin_unlock( &dev->count_lock );
+			unlock_kernel();
+			return -EBUSY;
+		}
+		spin_unlock( &dev->count_lock );
+		unlock_kernel();
+		return DRM(takedown)( dev );
+	}
+	spin_unlock( &dev->count_lock );
+
+	unlock_kernel();
+	return retcode;
+}
+
+/* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm.
+ */
+int DRM(ioctl)( struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ioctl_desc_t *ioctl;
+	drm_ioctl_t *func;
+	int nr = DRM_IOCTL_NR(cmd);
+	int retcode = 0;
+
+	atomic_inc( &dev->ioctl_count );
+	atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
+	++priv->ioctl_count;
+
+	DRM_DEBUG( "pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%x, auth=%d\n",
+		   current->pid, cmd, nr, dev->device, priv->authenticated );
+
+	if ( nr >= DRIVER_IOCTL_COUNT ) {
+		retcode = -EINVAL;
+	} else {
+		ioctl = &DRM(ioctls)[nr];
+		func = ioctl->func;
+
+		if ( !func ) {
+			DRM_DEBUG( "no function\n" );
+			retcode = -EINVAL;
+		} else if ( ( ioctl->root_only && !capable( CAP_SYS_ADMIN ) )||
+			    ( ioctl->auth_needed && !priv->authenticated ) ) {
+			retcode = -EACCES;
+		} else {
+			retcode = func( inode, filp, cmd, arg );
+		}
+	}
+
+	atomic_dec( &dev->ioctl_count );
+	return retcode;
+}
+
+int DRM(lock)( struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg )
+{
+        drm_file_t *priv = filp->private_data;
+        drm_device_t *dev = priv->dev;
+        DECLARE_WAITQUEUE( entry, current );
+        drm_lock_t lock;
+        int ret = 0;
+#if __HAVE_MULTIPLE_DMA_QUEUES
+	drm_queue_t *q;
+#endif
+#if __HAVE_DMA_HISTOGRAM
+        cycles_t start;
+
+        dev->lck_start = start = get_cycles();
+#endif
+
+        if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
+		return -EFAULT;
+
+        if ( lock.context == DRM_KERNEL_CONTEXT ) {
+                DRM_ERROR( "Process %d using kernel context %d\n",
+			   current->pid, lock.context );
+                return -EINVAL;
+        }
+
+        DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
+		   lock.context, current->pid,
+		   dev->lock.hw_lock->lock, lock.flags );
+
+#if __HAVE_DMA_QUEUE
+        if ( lock.context < 0 )
+                return -EINVAL;
+#elif __HAVE_MULTIPLE_DMA_QUEUES
+        if ( lock.context < 0 || lock.context >= dev->queue_count )
+                return -EINVAL;
+	q = dev->queuelist[lock.context];
+#endif
+
+#if __HAVE_DMA_FLUSH
+	ret = DRM(flush_block_and_flush)( dev, lock.context, lock.flags );
+#endif
+        if ( !ret ) {
+                add_wait_queue( &dev->lock.lock_queue, &entry );
+                for (;;) {
+                        current->state = TASK_INTERRUPTIBLE;
+                        if ( !dev->lock.hw_lock ) {
+                                /* Device has been unregistered */
+                                ret = -EINTR;
+                                break;
+                        }
+                        if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+					     lock.context ) ) {
+                                dev->lock.pid       = current->pid;
+                                dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+                                break;  /* Got lock */
+                        }
+
+                                /* Contention */
+                        schedule();
+                        if ( signal_pending( current ) ) {
+                                ret = -ERESTARTSYS;
+                                break;
+                        }
+                }
+                current->state = TASK_RUNNING;
+                remove_wait_queue( &dev->lock.lock_queue, &entry );
+        }
+
+#if __HAVE_DMA_FLUSH
+	DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */
+#endif
+
+        if ( !ret ) {
+		sigemptyset( &dev->sigmask );
+		sigaddset( &dev->sigmask, SIGSTOP );
+		sigaddset( &dev->sigmask, SIGTSTP );
+		sigaddset( &dev->sigmask, SIGTTIN );
+		sigaddset( &dev->sigmask, SIGTTOU );
+		dev->sigdata.context = lock.context;
+		dev->sigdata.lock    = dev->lock.hw_lock;
+		block_all_signals( DRM(notifier),
+				   &dev->sigdata, &dev->sigmask );
+
+#if __HAVE_DMA_READY
+                if ( lock.flags & _DRM_LOCK_READY ) {
+			DRIVER_DMA_READY();
+		}
+#endif
+#if __HAVE_DMA_QUIESCENT
+                if ( lock.flags & _DRM_LOCK_QUIESCENT ) {
+			DRIVER_DMA_QUIESCENT();
+		}
+#endif
+        }
+
+        DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
+
+#if __HAVE_DMA_HISTOGRAM
+        atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]);
+#endif
+        return ret;
+}
+
+
+int DRM(unlock)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_lock_t lock;
+
+	if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
+		return -EFAULT;
+
+	if ( lock.context == DRM_KERNEL_CONTEXT ) {
+		DRM_ERROR( "Process %d using kernel context %d\n",
+			   current->pid, lock.context );
+		return -EINVAL;
+	}
+
+	atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
+
+	DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
+			    DRM_KERNEL_CONTEXT );
+#if __HAVE_DMA_SCHEDULE
+	DRM(dma_schedule)( dev, 1 );
+#endif
+
+	/* FIXME: Do we ever really need to check this???
+	 */
+	if ( 1 /* !dev->context_flag */ ) {
+		if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+				     DRM_KERNEL_CONTEXT ) ) {
+			DRM_ERROR( "\n" );
+		}
+	}
+
+	unblock_all_signals();
+	return 0;
+}
diff --git a/linux/drm_ioctl.h b/linux/drm_ioctl.h
new file mode 100644
index 00000000..2fba6b0c
--- /dev/null
+++ b/linux/drm_ioctl.h
@@ -0,0 +1,210 @@
+/* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
+ * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+int DRM(irq_busid)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_irq_busid_t p;
+	struct pci_dev	*dev;
+
+	if (copy_from_user(&p, (drm_irq_busid_t *)arg, sizeof(p)))
+		return -EFAULT;
+	dev = pci_find_slot(p.busnum, PCI_DEVFN(p.devnum, p.funcnum));
+	if (dev) p.irq = dev->irq;
+	else	 p.irq = 0;
+	DRM_DEBUG("%d:%d:%d => IRQ %d\n",
+		  p.busnum, p.devnum, p.funcnum, p.irq);
+	if (copy_to_user((drm_irq_busid_t *)arg, &p, sizeof(p)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(getunique)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	 *priv	 = filp->private_data;
+	drm_device_t	 *dev	 = priv->dev;
+	drm_unique_t	 u;
+
+	if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
+		return -EFAULT;
+	if (u.unique_len >= dev->unique_len) {
+		if (copy_to_user(u.unique, dev->unique, dev->unique_len))
+			return -EFAULT;
+	}
+	u.unique_len = dev->unique_len;
+	if (copy_to_user((drm_unique_t *)arg, &u, sizeof(u)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(setunique)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	 *priv	 = filp->private_data;
+	drm_device_t	 *dev	 = priv->dev;
+	drm_unique_t	 u;
+
+	if (dev->unique_len || dev->unique)
+		return -EBUSY;
+
+	if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
+		return -EFAULT;
+
+	if (!u.unique_len)
+		return -EINVAL;
+
+	dev->unique_len = u.unique_len;
+	dev->unique	= DRM(alloc)(u.unique_len + 1, DRM_MEM_DRIVER);
+	if (copy_from_user(dev->unique, u.unique, dev->unique_len))
+		return -EFAULT;
+	dev->unique[dev->unique_len] = '\0';
+
+	dev->devname = DRM(alloc)(strlen(dev->name) + strlen(dev->unique) + 2,
+				  DRM_MEM_DRIVER);
+	sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
+
+	return 0;
+}
+
+
+int DRM(getmap)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t   *priv = filp->private_data;
+	drm_device_t *dev  = priv->dev;
+	drm_map_t    map;
+	drm_map_list_t *r_list = NULL;
+	struct list_head *list;
+	int          idx;
+	int	     i;
+
+	if (copy_from_user(&map, (drm_map_t *)arg, sizeof(map)))
+		return -EFAULT;
+	idx = map.offset;
+
+	down(&dev->struct_sem);
+	if (idx < 0 || idx >= dev->map_count) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+
+	i = 0;
+	list_for_each(list, &dev->maplist->head) {
+		if(i == idx) {
+			r_list = (drm_map_list_t *)list;
+			break;
+		}
+		i++;
+	}
+	if(!r_list || !r_list->map) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+
+	map.offset = r_list->map->offset;
+	map.size   = r_list->map->size;
+	map.type   = r_list->map->type;
+	map.flags  = r_list->map->flags;
+	map.handle = r_list->map->handle;
+	map.mtrr   = r_list->map->mtrr;
+	up(&dev->struct_sem);
+
+	if (copy_to_user((drm_map_t *)arg, &map, sizeof(map))) return -EFAULT;
+	return 0;
+}
+
+int DRM(getclient)( struct inode *inode, struct file *filp,
+		    unsigned int cmd, unsigned long arg )
+{
+	drm_file_t   *priv = filp->private_data;
+	drm_device_t *dev  = priv->dev;
+	drm_client_t client;
+	drm_file_t   *pt;
+	int          idx;
+	int          i;
+
+	if (copy_from_user(&client, (drm_client_t *)arg, sizeof(client)))
+		return -EFAULT;
+	idx = client.idx;
+	down(&dev->struct_sem);
+	for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next)
+		;
+
+	if (!pt) {
+		up(&dev->struct_sem);
+		return -EINVAL;
+	}
+	client.auth  = pt->authenticated;
+	client.pid   = pt->pid;
+	client.uid   = pt->uid;
+	client.magic = pt->magic;
+	client.iocs  = pt->ioctl_count;
+	up(&dev->struct_sem);
+
+	if (copy_to_user((drm_client_t *)arg, &client, sizeof(client)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(getstats)( struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg )
+{
+	drm_file_t   *priv = filp->private_data;
+	drm_device_t *dev  = priv->dev;
+	drm_stats_t  stats;
+	int          i;
+
+	memset(&stats, 0, sizeof(stats));
+	
+	down(&dev->struct_sem);
+
+	for (i = 0; i < dev->counters; i++) {
+		if (dev->types[i] == _DRM_STAT_LOCK)
+			stats.data[i].value
+				= (dev->lock.hw_lock
+				   ? dev->lock.hw_lock->lock : 0);
+		else 
+			stats.data[i].value = atomic_read(&dev->counts[i]);
+		stats.data[i].type  = dev->types[i];
+	}
+	
+	stats.count = dev->counters;
+
+	up(&dev->struct_sem);
+
+	if (copy_to_user((drm_stats_t *)arg, &stats, sizeof(stats)))
+		return -EFAULT;
+	return 0;
+}
diff --git a/linux/drm_proc.h b/linux/drm_proc.h
new file mode 100644
index 00000000..f65f42b7
--- /dev/null
+++ b/linux/drm_proc.h
@@ -0,0 +1,630 @@
+/* drm_proc.h -- /proc support for DRM -*- linux-c -*-
+ * Created: Mon Jan 11 09:48:47 1999 by faith@valinux.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ *
+ * Acknowledgements:
+ *    Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
+ *    the problem with the proc files not outputting all their information.
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+static int	   DRM(name_info)(char *buf, char **start, off_t offset,
+				  int request, int *eof, void *data);
+static int	   DRM(vm_info)(char *buf, char **start, off_t offset,
+				int request, int *eof, void *data);
+static int	   DRM(clients_info)(char *buf, char **start, off_t offset,
+				     int request, int *eof, void *data);
+static int	   DRM(queues_info)(char *buf, char **start, off_t offset,
+				    int request, int *eof, void *data);
+static int	   DRM(bufs_info)(char *buf, char **start, off_t offset,
+				  int request, int *eof, void *data);
+#if DRM_DEBUG_CODE
+static int	   DRM(vma_info)(char *buf, char **start, off_t offset,
+				 int request, int *eof, void *data);
+#endif
+#if __HAVE_DMA_HISTOGRAM
+static int	   DRM(histo_info)(char *buf, char **start, off_t offset,
+				   int request, int *eof, void *data);
+#endif
+
+struct drm_proc_list {
+	const char *name;
+	int	   (*f)(char *, char **, off_t, int, int *, void *);
+} DRM(proc_list)[] = {
+	{ "name",    DRM(name_info)    },
+	{ "mem",     DRM(mem_info)     },
+	{ "vm",	     DRM(vm_info)      },
+	{ "clients", DRM(clients_info) },
+	{ "queues",  DRM(queues_info)  },
+	{ "bufs",    DRM(bufs_info)    },
+#if DRM_DEBUG_CODE
+	{ "vma",     DRM(vma_info)     },
+#endif
+#if __HAVE_DMA_HISTOGRAM
+	{ "histo",   DRM(histo_info)   },
+#endif
+};
+#define DRM_PROC_ENTRIES (sizeof(DRM(proc_list))/sizeof(DRM(proc_list)[0]))
+
+struct proc_dir_entry *DRM(proc_init)(drm_device_t *dev, int minor,
+				      struct proc_dir_entry *root,
+				      struct proc_dir_entry **dev_root)
+{
+	struct proc_dir_entry *ent;
+	int		      i, j;
+	char                  name[64];
+
+	if (!minor) root = create_proc_entry("dri", S_IFDIR, NULL);
+	if (!root) {
+		DRM_ERROR("Cannot create /proc/dri\n");
+		return NULL;
+	}
+
+	sprintf(name, "%d", minor);
+	*dev_root = create_proc_entry(name, S_IFDIR, root);
+	if (!*dev_root) {
+		DRM_ERROR("Cannot create /proc/%s\n", name);
+		return NULL;
+	}
+
+	for (i = 0; i < DRM_PROC_ENTRIES; i++) {
+		ent = create_proc_entry(DRM(proc_list)[i].name,
+					S_IFREG|S_IRUGO, *dev_root);
+		if (!ent) {
+			DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
+				  name, DRM(proc_list)[i].name);
+			for (j = 0; j < i; j++)
+				remove_proc_entry(DRM(proc_list)[i].name,
+						  *dev_root);
+			remove_proc_entry(name, root);
+			if (!minor) remove_proc_entry("dri", NULL);
+			return NULL;
+		}
+		ent->read_proc = DRM(proc_list)[i].f;
+		ent->data      = dev;
+	}
+
+	return root;
+}
+
+
+int DRM(proc_cleanup)(int minor, struct proc_dir_entry *root,
+		      struct proc_dir_entry *dev_root)
+{
+	int  i;
+	char name[64];
+
+	if (!root || !dev_root) return 0;
+
+	for (i = 0; i < DRM_PROC_ENTRIES; i++)
+		remove_proc_entry(DRM(proc_list)[i].name, dev_root);
+	sprintf(name, "%d", minor);
+	remove_proc_entry(name, root);
+	if (!minor) remove_proc_entry("dri", NULL);
+
+	return 0;
+}
+
+static int DRM(name_info)(char *buf, char **start, off_t offset, int request,
+			  int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	if (dev->unique) {
+		DRM_PROC_PRINT("%s 0x%x %s\n",
+			       dev->name, dev->device, dev->unique);
+	} else {
+		DRM_PROC_PRINT("%s 0x%x\n", dev->name, dev->device);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(_vm_info)(char *buf, char **start, off_t offset, int request,
+			 int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+	drm_map_t    *map;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+
+				/* Hardcoded from _DRM_FRAME_BUFFER,
+                                   _DRM_REGISTERS, _DRM_SHM, and
+                                   _DRM_AGP. */
+	const char   *types[] = { "FB", "REG", "SHM", "AGP" };
+	const char   *type;
+	int	     i;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("slot	 offset	      size type flags	 "
+		       "address mtrr\n\n");
+	i = 0;
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *)list;
+		map = r_list->map;
+		if(!map) continue;
+		if (map->type < 0 || map->type > 3) type = "??";
+		else				    type = types[map->type];
+		DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s  0x%02x 0x%08lx ",
+			       i,
+			       map->offset,
+			       map->size,
+			       type,
+			       map->flags,
+			       (unsigned long)map->handle);
+		if (map->mtrr < 0) {
+			DRM_PROC_PRINT("none\n");
+		} else {
+			DRM_PROC_PRINT("%4d\n", map->mtrr);
+		}
+		i++;
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(vm_info)(char *buf, char **start, off_t offset, int request,
+			int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_vm_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+
+static int DRM(_queues_info)(char *buf, char **start, off_t offset,
+			     int request, int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+	int	     i;
+	drm_queue_t  *q;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("  ctx/flags   use   fin"
+		       "   blk/rw/rwf  wait    flushed	   queued"
+		       "      locks\n\n");
+	for (i = 0; i < dev->queue_count; i++) {
+		q = dev->queuelist[i];
+		atomic_inc(&q->use_count);
+		DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
+				   "%5d/0x%03x %5d %5d"
+				   " %5d/%c%c/%c%c%c %5Zd\n",
+				   i,
+				   q->flags,
+				   atomic_read(&q->use_count),
+				   atomic_read(&q->finalization),
+				   atomic_read(&q->block_count),
+				   atomic_read(&q->block_read) ? 'r' : '-',
+				   atomic_read(&q->block_write) ? 'w' : '-',
+				   waitqueue_active(&q->read_queue) ? 'r':'-',
+				   waitqueue_active(&q->write_queue) ? 'w':'-',
+				   waitqueue_active(&q->flush_queue) ? 'f':'-',
+				   DRM_BUFCOUNT(&q->waitlist));
+		atomic_dec(&q->use_count);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(queues_info)(char *buf, char **start, off_t offset, int request,
+			    int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_queues_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+/* drm_bufs_info is called whenever a process reads
+   /dev/dri/<dev>/bufs. */
+
+static int DRM(_bufs_info)(char *buf, char **start, off_t offset, int request,
+			   int *eof, void *data)
+{
+	drm_device_t	 *dev = (drm_device_t *)data;
+	int              len  = 0;
+	drm_device_dma_t *dma = dev->dma;
+	int		 i;
+
+	if (!dma || offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT(" o     size count  free	 segs pages    kB\n\n");
+	for (i = 0; i <= DRM_MAX_ORDER; i++) {
+		if (dma->bufs[i].buf_count)
+			DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
+				       i,
+				       dma->bufs[i].buf_size,
+				       dma->bufs[i].buf_count,
+				       atomic_read(&dma->bufs[i]
+						   .freelist.count),
+				       dma->bufs[i].seg_count,
+				       dma->bufs[i].seg_count
+				       *(1 << dma->bufs[i].page_order),
+				       (dma->bufs[i].seg_count
+					* (1 << dma->bufs[i].page_order))
+				       * PAGE_SIZE / 1024);
+	}
+	DRM_PROC_PRINT("\n");
+	for (i = 0; i < dma->buf_count; i++) {
+		if (i && !(i%32)) DRM_PROC_PRINT("\n");
+		DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
+	}
+	DRM_PROC_PRINT("\n");
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(bufs_info)(char *buf, char **start, off_t offset, int request,
+			  int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_bufs_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+
+static int DRM(_clients_info)(char *buf, char **start, off_t offset,
+			      int request, int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int          len  = 0;
+	drm_file_t   *priv;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("a dev	pid    uid	magic	  ioctls\n\n");
+	for (priv = dev->file_first; priv; priv = priv->next) {
+		DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
+			       priv->authenticated ? 'y' : 'n',
+			       priv->minor,
+			       priv->pid,
+			       priv->uid,
+			       priv->magic,
+			       priv->ioctl_count);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(clients_info)(char *buf, char **start, off_t offset,
+			     int request, int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_clients_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+
+#if DRM_DEBUG_CODE
+
+#define DRM_VMA_VERBOSE 0
+
+static int DRM(_vma_info)(char *buf, char **start, off_t offset, int request,
+			  int *eof, void *data)
+{
+	drm_device_t	      *dev = (drm_device_t *)data;
+	int                   len  = 0;
+	drm_vma_entry_t	      *pt;
+	struct vm_area_struct *vma;
+#if DRM_VMA_VERBOSE
+	unsigned long	      i;
+	unsigned long	      address;
+	pgd_t		      *pgd;
+	pmd_t		      *pmd;
+	pte_t		      *pte;
+#endif
+#if defined(__i386__)
+	unsigned int	      pgprot;
+#endif
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
+		       atomic_read(&dev->vma_count),
+		       high_memory, virt_to_phys(high_memory));
+	for (pt = dev->vmalist; pt; pt = pt->next) {
+		if (!(vma = pt->vma)) continue;
+		DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
+			       pt->pid,
+			       vma->vm_start,
+			       vma->vm_end,
+			       vma->vm_flags & VM_READ	   ? 'r' : '-',
+			       vma->vm_flags & VM_WRITE	   ? 'w' : '-',
+			       vma->vm_flags & VM_EXEC	   ? 'x' : '-',
+			       vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
+			       vma->vm_flags & VM_LOCKED   ? 'l' : '-',
+			       vma->vm_flags & VM_IO	   ? 'i' : '-',
+			       VM_OFFSET(vma));
+
+#if defined(__i386__)
+		pgprot = pgprot_val(vma->vm_page_prot);
+		DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
+			       pgprot & _PAGE_PRESENT  ? 'p' : '-',
+			       pgprot & _PAGE_RW       ? 'w' : 'r',
+			       pgprot & _PAGE_USER     ? 'u' : 's',
+			       pgprot & _PAGE_PWT      ? 't' : 'b',
+			       pgprot & _PAGE_PCD      ? 'u' : 'c',
+			       pgprot & _PAGE_ACCESSED ? 'a' : '-',
+			       pgprot & _PAGE_DIRTY    ? 'd' : '-',
+			       pgprot & _PAGE_PSE      ? 'm' : 'k',
+			       pgprot & _PAGE_GLOBAL   ? 'g' : 'l' );
+#endif
+		DRM_PROC_PRINT("\n");
+#if 0
+		for (i = vma->vm_start; i < vma->vm_end; i += PAGE_SIZE) {
+			pgd = pgd_offset(vma->vm_mm, i);
+			pmd = pmd_offset(pgd, i);
+			pte = pte_offset(pmd, i);
+			if (pte_present(*pte)) {
+				address = __pa(pte_page(*pte))
+					+ (i & (PAGE_SIZE-1));
+				DRM_PROC_PRINT("      0x%08lx -> 0x%08lx"
+					       " %c%c%c%c%c\n",
+					       i,
+					       address,
+					       pte_read(*pte)  ? 'r' : '-',
+					       pte_write(*pte) ? 'w' : '-',
+					       pte_exec(*pte)  ? 'x' : '-',
+					       pte_dirty(*pte) ? 'd' : '-',
+					       pte_young(*pte) ? 'a' : '-' );
+			} else {
+				DRM_PROC_PRINT("      0x%08lx\n", i);
+			}
+		}
+#endif
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
+			 int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_vma_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+#endif
+
+
+#if __HAVE_DMA_HISTOGRAM
+static int DRM(_histo_info)(char *buf, char **start, off_t offset, int request,
+			    int *eof, void *data)
+{
+	drm_device_t	 *dev = (drm_device_t *)data;
+	int              len  = 0;
+	drm_device_dma_t *dma = dev->dma;
+	int		 i;
+	unsigned long	 slot_value = DRM_DMA_HISTOGRAM_INITIAL;
+	unsigned long	 prev_value = 0;
+	drm_buf_t	 *buffer;
+
+	if (offset > DRM_PROC_LIMIT) {
+		*eof = 1;
+		return 0;
+	}
+
+	*start = &buf[offset];
+	*eof   = 0;
+
+	DRM_PROC_PRINT("general statistics:\n");
+	DRM_PROC_PRINT("total	 %10u\n", atomic_read(&dev->histo.total));
+	DRM_PROC_PRINT("open	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_OPENS]));
+	DRM_PROC_PRINT("close	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_CLOSES]));
+	DRM_PROC_PRINT("ioctl	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_IOCTLS]));
+
+	DRM_PROC_PRINT("\nlock statistics:\n");
+	DRM_PROC_PRINT("locks	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_LOCKS]));
+	DRM_PROC_PRINT("unlocks	 %10u\n",
+		       atomic_read(&dev->counts[_DRM_STAT_UNLOCKS]));
+
+	if (dma) {
+#if 0
+		DRM_PROC_PRINT("\ndma statistics:\n");
+		DRM_PROC_PRINT("prio	 %10u\n",
+			       atomic_read(&dma->total_prio));
+		DRM_PROC_PRINT("bytes	 %10u\n",
+			       atomic_read(&dma->total_bytes));
+		DRM_PROC_PRINT("dmas	 %10u\n",
+			       atomic_read(&dma->total_dmas));
+		DRM_PROC_PRINT("missed:\n");
+		DRM_PROC_PRINT("  dma	 %10u\n",
+			       atomic_read(&dma->total_missed_dma));
+		DRM_PROC_PRINT("  lock	 %10u\n",
+			       atomic_read(&dma->total_missed_lock));
+		DRM_PROC_PRINT("  free	 %10u\n",
+			       atomic_read(&dma->total_missed_free));
+		DRM_PROC_PRINT("  sched	 %10u\n",
+			       atomic_read(&dma->total_missed_sched));
+		DRM_PROC_PRINT("tried	 %10u\n",
+			       atomic_read(&dma->total_tried));
+		DRM_PROC_PRINT("hit	 %10u\n",
+			       atomic_read(&dma->total_hit));
+		DRM_PROC_PRINT("lost	 %10u\n",
+			       atomic_read(&dma->total_lost));
+#endif
+
+		buffer = dma->next_buffer;
+		if (buffer) {
+			DRM_PROC_PRINT("next_buffer %7d\n", buffer->idx);
+		} else {
+			DRM_PROC_PRINT("next_buffer    none\n");
+		}
+		buffer = dma->this_buffer;
+		if (buffer) {
+			DRM_PROC_PRINT("this_buffer %7d\n", buffer->idx);
+		} else {
+			DRM_PROC_PRINT("this_buffer    none\n");
+		}
+	}
+
+
+	DRM_PROC_PRINT("\nvalues:\n");
+	if (dev->lock.hw_lock) {
+		DRM_PROC_PRINT("lock	       0x%08x\n",
+			       dev->lock.hw_lock->lock);
+	} else {
+		DRM_PROC_PRINT("lock		     none\n");
+	}
+	DRM_PROC_PRINT("context_flag   0x%08lx\n", dev->context_flag);
+	DRM_PROC_PRINT("interrupt_flag 0x%08lx\n", dev->interrupt_flag);
+	DRM_PROC_PRINT("dma_flag       0x%08lx\n", dev->dma_flag);
+
+	DRM_PROC_PRINT("queue_count    %10d\n",	 dev->queue_count);
+	DRM_PROC_PRINT("last_context   %10d\n",	 dev->last_context);
+	DRM_PROC_PRINT("last_switch    %10lu\n", dev->last_switch);
+	DRM_PROC_PRINT("last_checked   %10d\n",	 dev->last_checked);
+
+
+	DRM_PROC_PRINT("\n		       q2d	  d2c	     c2f"
+		       "	q2c	   q2f	      dma	 sch"
+		       "	ctx	  lacq	     lhld\n\n");
+	for (i = 0; i < DRM_DMA_HISTOGRAM_SLOTS; i++) {
+		DRM_PROC_PRINT("%s %10lu %10u %10u %10u %10u %10u"
+			       " %10u %10u %10u %10u %10u\n",
+			       i == DRM_DMA_HISTOGRAM_SLOTS - 1 ? ">=" : "< ",
+			       i == DRM_DMA_HISTOGRAM_SLOTS - 1
+			       ? prev_value : slot_value ,
+
+			       atomic_read(&dev->histo
+					   .queued_to_dispatched[i]),
+			       atomic_read(&dev->histo
+					   .dispatched_to_completed[i]),
+			       atomic_read(&dev->histo
+					   .completed_to_freed[i]),
+
+			       atomic_read(&dev->histo
+					   .queued_to_completed[i]),
+			       atomic_read(&dev->histo
+					   .queued_to_freed[i]),
+			       atomic_read(&dev->histo.dma[i]),
+			       atomic_read(&dev->histo.schedule[i]),
+			       atomic_read(&dev->histo.ctx[i]),
+			       atomic_read(&dev->histo.lacq[i]),
+			       atomic_read(&dev->histo.lhld[i]));
+		prev_value = slot_value;
+		slot_value = DRM_DMA_HISTOGRAM_NEXT(slot_value);
+	}
+
+	if (len > request + offset) return request;
+	*eof = 1;
+	return len - offset;
+}
+
+static int DRM(histo_info)(char *buf, char **start, off_t offset, int request,
+			   int *eof, void *data)
+{
+	drm_device_t *dev = (drm_device_t *)data;
+	int	     ret;
+
+	down(&dev->struct_sem);
+	ret = DRM(_histo_info)(buf, start, offset, request, eof, data);
+	up(&dev->struct_sem);
+	return ret;
+}
+#endif
diff --git a/linux/drm_vm.h b/linux/drm_vm.h
new file mode 100644
index 00000000..fb51926b
--- /dev/null
+++ b/linux/drm_vm.h
@@ -0,0 +1,416 @@
+/* drm_vm.h -- Memory mapping for DRM -*- linux-c -*-
+ * Created: Mon Jan  4 08:58:31 1999 by faith@valinux.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+
+struct vm_operations_struct   drm_vm_ops = {
+	nopage:	 DRM(vm_nopage),
+	open:	 DRM(vm_open),
+	close:	 DRM(vm_close),
+};
+
+struct vm_operations_struct   drm_vm_shm_ops = {
+	nopage:	 DRM(vm_shm_nopage),
+	open:	 DRM(vm_open),
+	close:	 DRM(vm_shm_close),
+};
+
+struct vm_operations_struct   drm_vm_dma_ops = {
+	nopage:	 DRM(vm_dma_nopage),
+	open:	 DRM(vm_open),
+	close:	 DRM(vm_close),
+};
+
+#if LINUX_VERSION_CODE < 0x020317
+unsigned long DRM(vm_nopage)(struct vm_area_struct *vma,
+			     unsigned long address,
+			     int write_access)
+#else
+				/* Return type changed in 2.3.23 */
+struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
+			    unsigned long address,
+			    int write_access)
+#endif
+{
+	return NOPAGE_SIGBUS;		/* Disallow mremap */
+}
+
+#if LINUX_VERSION_CODE < 0x020317
+unsigned long DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				 unsigned long address,
+				 int write_access)
+#else
+				/* Return type changed in 2.3.23 */
+struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				unsigned long address,
+				int write_access)
+#endif
+{
+#if LINUX_VERSION_CODE >= 0x020300
+	drm_map_t	 *map	 = (drm_map_t *)vma->vm_private_data;
+#else
+	drm_map_t	 *map	 = (drm_map_t *)vma->vm_pte;
+#endif
+	unsigned long	 physical;
+	unsigned long	 offset;
+	unsigned long	 i;
+	pgd_t		 *pgd;
+	pmd_t		 *pmd;
+	pte_t		 *pte;
+
+	if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */
+	if (!map)    		   return NOPAGE_OOM;  /* Nothing allocated */
+
+	offset	 = address - vma->vm_start;
+	i = (unsigned long)map->handle + offset;
+	/* We have to walk page tables here because we need large SAREA's, and
+	 * they need to be virtually contigious in kernel space.
+	 */
+	pgd = pgd_offset_k( i );
+	if( !pgd_present( *pgd ) ) return NOPAGE_OOM;
+	pmd = pmd_offset( pgd, i );
+	if( !pmd_present( *pmd ) ) return NOPAGE_OOM;
+	pte = pte_offset( pmd, i );
+	if( !pte_present( *pte ) ) return NOPAGE_OOM;
+	physical = (unsigned long)pte_page( *pte )->virtual;
+	atomic_inc(&virt_to_page(physical)->count); /* Dec. by kernel */
+
+	DRM_DEBUG("0x%08lx => 0x%08lx\n", address, physical);
+#if LINUX_VERSION_CODE < 0x020317
+	return physical;
+#else
+	return virt_to_page(physical);
+#endif
+}
+
+/* Special close routine which deletes map information if we are the last
+ * person to close a mapping and its not in the global maplist.
+ */
+
+void DRM(vm_shm_close)(struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= vma->vm_file->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_vma_entry_t *pt, *prev;
+	drm_map_t *map;
+	drm_map_list_t *r_list;
+	struct list_head *list;
+	int found_maps = 0;
+
+	DRM_DEBUG("0x%08lx,0x%08lx\n",
+		  vma->vm_start, vma->vm_end - vma->vm_start);
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_dec(&dev->vma_count);
+
+#if LINUX_VERSION_CODE >= 0x020300
+	map = vma->vm_private_data;
+#else
+	map = vma->vm_pte;
+#endif
+
+	down(&dev->struct_sem);
+	for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+#if LINUX_VERSION_CODE >= 0x020300
+		if (pt->vma->vm_private_data == map) found_maps++;
+#else
+		if (pt->vma->vm_pte == map) found_maps++;
+#endif
+		if (pt->vma == vma) {
+			if (prev) {
+				prev->next = pt->next;
+			} else {
+				dev->vmalist = pt->next;
+			}
+			DRM(free)(pt, sizeof(*pt), DRM_MEM_VMAS);
+		}
+	}
+	/* We were the only map that was found */
+	if(found_maps == 1 &&
+	   map->flags & _DRM_REMOVABLE) {
+		/* Check to see if we are in the maplist, if we are not, then
+		 * we delete this mappings information.
+		 */
+		found_maps = 0;
+		list = &dev->maplist->head;
+		list_for_each(list, &dev->maplist->head) {
+			r_list = (drm_map_list_t *) list;
+			if (r_list->map == map) found_maps++;
+		}
+
+		if(!found_maps) {
+			switch (map->type) {
+			case _DRM_REGISTERS:
+			case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+				if (map->mtrr >= 0) {
+					int retcode;
+					retcode = mtrr_del(map->mtrr,
+							   map->offset,
+							   map->size);
+					DRM_DEBUG("mtrr_del = %d\n", retcode);
+				}
+#endif
+				DRM(ioremapfree)(map->handle, map->size);
+				break;
+			case _DRM_SHM:
+				vfree(map->handle);
+				break;
+			case _DRM_AGP:
+				break;
+			}
+			DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+		}
+	}
+	up(&dev->struct_sem);
+}
+
+#if LINUX_VERSION_CODE < 0x020317
+unsigned long DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				 unsigned long address,
+				 int write_access)
+#else
+				/* Return type changed in 2.3.23 */
+struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				unsigned long address,
+				int write_access)
+#endif
+{
+	drm_file_t	 *priv	 = vma->vm_file->private_data;
+	drm_device_t	 *dev	 = priv->dev;
+	drm_device_dma_t *dma	 = dev->dma;
+	unsigned long	 physical;
+	unsigned long	 offset;
+	unsigned long	 page;
+
+	if (!dma)		   return NOPAGE_SIGBUS; /* Error */
+	if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */
+	if (!dma->pagelist)	   return NOPAGE_OOM ; /* Nothing allocated */
+
+	offset	 = address - vma->vm_start; /* vm_[pg]off[set] should be 0 */
+	page	 = offset >> PAGE_SHIFT;
+	physical = dma->pagelist[page] + (offset & (~PAGE_MASK));
+	atomic_inc(&virt_to_page(physical)->count); /* Dec. by kernel */
+
+	DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", address, page, physical);
+#if LINUX_VERSION_CODE < 0x020317
+	return physical;
+#else
+	return virt_to_page(physical);
+#endif
+}
+
+void DRM(vm_open)(struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= vma->vm_file->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_vma_entry_t *vma_entry;
+
+	DRM_DEBUG("0x%08lx,0x%08lx\n",
+		  vma->vm_start, vma->vm_end - vma->vm_start);
+	atomic_inc(&dev->vma_count);
+#if LINUX_VERSION_CODE < 0x020333
+				/* The map can exist after the fd is closed. */
+	MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+
+	vma_entry = DRM(alloc)(sizeof(*vma_entry), DRM_MEM_VMAS);
+	if (vma_entry) {
+		down(&dev->struct_sem);
+		vma_entry->vma	= vma;
+		vma_entry->next = dev->vmalist;
+		vma_entry->pid	= current->pid;
+		dev->vmalist	= vma_entry;
+		up(&dev->struct_sem);
+	}
+}
+
+void DRM(vm_close)(struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= vma->vm_file->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_vma_entry_t *pt, *prev;
+
+	DRM_DEBUG("0x%08lx,0x%08lx\n",
+		  vma->vm_start, vma->vm_end - vma->vm_start);
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_dec(&dev->vma_count);
+
+	down(&dev->struct_sem);
+	for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+		if (pt->vma == vma) {
+			if (prev) {
+				prev->next = pt->next;
+			} else {
+				dev->vmalist = pt->next;
+			}
+			DRM(free)(pt, sizeof(*pt), DRM_MEM_VMAS);
+			break;
+		}
+	}
+	up(&dev->struct_sem);
+}
+
+int DRM(mmap_dma)(struct file *filp, struct vm_area_struct *vma)
+{
+	drm_file_t	 *priv	 = filp->private_data;
+	drm_device_t	 *dev;
+	drm_device_dma_t *dma;
+	unsigned long	 length	 = vma->vm_end - vma->vm_start;
+
+	lock_kernel();
+	dev	 = priv->dev;
+	dma	 = dev->dma;
+	DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
+		  vma->vm_start, vma->vm_end, VM_OFFSET(vma));
+
+				/* Length must match exact page count */
+	if (!dma || (length >> PAGE_SHIFT) != dma->page_count) {
+		unlock_kernel();
+		return -EINVAL;
+	}
+	unlock_kernel();
+
+	vma->vm_ops   = &drm_vm_dma_ops;
+	vma->vm_flags |= VM_LOCKED | VM_SHM; /* Don't swap */
+
+#if LINUX_VERSION_CODE < 0x020203 /* KERNEL_VERSION(2,2,3) */
+				/* In Linux 2.2.3 and above, this is
+				   handled in do_mmap() in mm/mmap.c. */
+	++filp->f_count;
+#endif
+	vma->vm_file  =	 filp;	/* Needed for drm_vm_open() */
+	DRM(vm_open)(vma);
+	return 0;
+}
+
+int DRM(mmap)(struct file *filp, struct vm_area_struct *vma)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_map_t	*map	= NULL;
+	drm_map_list_t  *r_list;
+	struct list_head *list;
+
+	DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
+		  vma->vm_start, vma->vm_end, VM_OFFSET(vma));
+
+	if (!VM_OFFSET(vma)) return DRM(mmap_dma)(filp, vma);
+
+				/* A sequential search of a linked list is
+				   fine here because: 1) there will only be
+				   about 5-10 entries in the list and, 2) a
+				   DRI client only has to do this mapping
+				   once, so it doesn't have to be optimized
+				   for performance, even if the list was a
+				   bit longer. */
+	list_for_each(list, &dev->maplist->head) {
+		r_list = (drm_map_list_t *)list;
+		map = r_list->map;
+		if (!map) continue;
+		if (map->offset == VM_OFFSET(vma)) break;
+	}
+
+	if (!map || ((map->flags&_DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
+		return -EPERM;
+
+				/* Check for valid size. */
+	if (map->size != vma->vm_end - vma->vm_start) return -EINVAL;
+
+	if (!capable(CAP_SYS_ADMIN) && (map->flags & _DRM_READ_ONLY)) {
+		vma->vm_flags &= VM_MAYWRITE;
+#if defined(__i386__)
+		pgprot_val(vma->vm_page_prot) &= ~_PAGE_RW;
+#else
+				/* Ye gads this is ugly.  With more thought
+                                   we could move this up higher and use
+                                   `protection_map' instead.  */
+		vma->vm_page_prot = __pgprot(pte_val(pte_wrprotect(
+			__pte(pgprot_val(vma->vm_page_prot)))));
+#endif
+	}
+
+	switch (map->type) {
+	case _DRM_FRAME_BUFFER:
+	case _DRM_REGISTERS:
+	case _DRM_AGP:
+		if (VM_OFFSET(vma) >= __pa(high_memory)) {
+#if defined(__i386__)
+			if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
+				pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
+				pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
+			}
+#elif defined(__ia64__)
+			if (map->type != _DRM_AGP)
+				vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+#endif
+			vma->vm_flags |= VM_IO;	/* not in core dump */
+		}
+		if (remap_page_range(vma->vm_start,
+				     VM_OFFSET(vma),
+				     vma->vm_end - vma->vm_start,
+				     vma->vm_page_prot))
+				return -EAGAIN;
+		DRM_DEBUG("   Type = %d; start = 0x%lx, end = 0x%lx,"
+			  " offset = 0x%lx\n",
+			  map->type,
+			  vma->vm_start, vma->vm_end, VM_OFFSET(vma));
+		vma->vm_ops = &drm_vm_ops;
+		break;
+	case _DRM_SHM:
+		vma->vm_ops = &drm_vm_shm_ops;
+#if LINUX_VERSION_CODE >= 0x020300
+		vma->vm_private_data = (void *)map;
+#else
+		vma->vm_pte = (unsigned long)map;
+#endif
+				/* Don't let this area swap.  Change when
+				   DRM_KERNEL advisory is supported. */
+		vma->vm_flags |= VM_LOCKED;
+		break;
+	default:
+		return -EINVAL;	/* This should never happen. */
+	}
+	vma->vm_flags |= VM_LOCKED | VM_SHM; /* Don't swap */
+
+#if LINUX_VERSION_CODE < 0x020203 /* KERNEL_VERSION(2,2,3) */
+				/* In Linux 2.2.3 and above, this is
+				   handled in do_mmap() in mm/mmap.c. */
+	++filp->f_count;
+#endif
+	vma->vm_file  =	 filp;	/* Needed for drm_vm_open() */
+	DRM(vm_open)(vma);
+	return 0;
+}
diff --git a/linux/gamma.h b/linux/gamma.h
new file mode 100644
index 00000000..232ed018
--- /dev/null
+++ b/linux/gamma.h
@@ -0,0 +1,93 @@
+/* gamma.c -- 3dlabs GMX 2000 driver -*- linux-c -*-
+ * Created: Mon Jan  4 08:58:31 1999 by gareth@valinux.com
+ *
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  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:
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#ifndef __GAMMA_H__
+#define __GAMMA_H__
+
+/* This remains constant for all DRM template files.
+ */
+#define DRM(x) gamma_##x
+
+/* General customization:
+ */
+#define __HAVE_MTRR			1
+
+/* DMA customization:
+ */
+#define __HAVE_DMA			1
+#define __HAVE_OLD_DMA			1
+#define __HAVE_PCI_DMA			1
+
+#define __HAVE_MULTIPLE_DMA_QUEUES	1
+#define __HAVE_DMA_WAITQUEUE		1
+
+#define __HAVE_DMA_WAITLIST		1
+#define __HAVE_DMA_FREELIST		1
+
+#define __HAVE_DMA_FLUSH		1
+#define __HAVE_DMA_SCHEDULE		1
+
+#define __HAVE_DMA_READY		1
+#define DRIVER_DMA_READY() do {						\
+	gamma_dma_ready(dev);						\
+} while (0)
+
+#define __HAVE_DMA_QUIESCENT		1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	/* FIXME ! */ 							\
+	gamma_dma_quiescent_dual(dev);					\
+	return 0;							\
+} while (0)
+
+#define __HAVE_DMA_IRQ			1
+#define __HAVE_DMA_IRQ_BH		1
+#define DRIVER_PREINSTALL() do {					\
+	drm_gamma_private_t *dev_priv =					\
+				(drm_gamma_private_t *)dev->dev_private;\
+	GAMMA_WRITE( GAMMA_GCOMMANDMODE,	0x00000000 );		\
+	GAMMA_WRITE( GAMMA_GDMACONTROL,		0x00000000 );		\
+} while (0)
+
+#define DRIVER_POSTINSTALL() do {					\
+	drm_gamma_private_t *dev_priv =					\
+				(drm_gamma_private_t *)dev->dev_private;\
+	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00002001 );		\
+	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000008 );		\
+	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00039090 );		\
+} while (0)
+
+#define DRIVER_UNINSTALL() do {						\
+	drm_gamma_private_t *dev_priv =					\
+				(drm_gamma_private_t *)dev->dev_private;\
+	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00000000 );		\
+	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000000 );		\
+	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00000000 );		\
+} while (0)
+
+#endif /* __GAMMA_H__ */
diff --git a/linux/i810.h b/linux/i810.h
new file mode 100644
index 00000000..ed25b2a9
--- /dev/null
+++ b/linux/i810.h
@@ -0,0 +1,112 @@
+/* i810.h -- Intel i810/i815 DRM template customization -*- linux-c -*-
+ * Created: Thu Feb 15 00:01:12 2001 by gareth@valinux.com
+ *
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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, 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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:
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#ifndef __I810_H__
+#define __I810_H__
+
+/* This remains constant for all DRM template files.
+ */
+#define DRM(x) i810_##x
+
+/* General customization:
+ */
+#define __HAVE_AGP		1
+#define __MUST_HAVE_AGP		1
+#define __HAVE_MTRR		1
+#define __HAVE_CTX_BITMAP	1
+
+/* Driver customization:
+ */
+#define __HAVE_RELEASE		1
+#define DRIVER_RELEASE() do {						\
+	i810_reclaim_buffers( dev, priv->pid );				\
+} while (0)
+
+/* DMA customization:
+ */
+#define __HAVE_DMA		1
+#define __HAVE_DMA_QUEUE	1
+#define __HAVE_DMA_WAITLIST	1
+#define __HAVE_DMA_RECLAIM	1
+
+#define __HAVE_DMA_QUIESCENT	1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	i810_dma_quiescent( dev );					\
+} while (0)
+
+#define __HAVE_DMA_IRQ		1
+#define __HAVE_DMA_IRQ_BH	1
+#define DRIVER_PREINSTALL() do {					\
+	drm_i810_private_t *dev_priv =					\
+				(drm_i810_private_t *)dev->dev_private;	\
+	u16 tmp;							\
+   	tmp = I810_READ16( I810REG_HWSTAM );				\
+   	tmp = tmp & 0x6000;						\
+   	I810_WRITE16( I810REG_HWSTAM, tmp );				\
+									\
+      	tmp = I810_READ16( I810REG_INT_MASK_R );			\
+   	tmp = tmp & 0x6000;		/* Unmask interrupts */		\
+   	I810_WRITE16( I810REG_INT_MASK_R, tmp );			\
+   	tmp = I810_READ16( I810REG_INT_ENABLE_R );			\
+   	tmp = tmp & 0x6000;		/* Disable all interrupts */	\
+      	I810_WRITE16( I810REG_INT_ENABLE_R, tmp );			\
+} while (0)
+
+#define DRIVER_POSTINSTALL() do {					\
+	drm_i810_private_t *dev_priv =					\
+				(drm_i810_private_t *)dev->dev_private;	\
+	u16 tmp;							\
+   	tmp = I810_READ16( I810REG_INT_ENABLE_R );			\
+   	tmp = tmp & 0x6000;						\
+   	tmp = tmp | 0x0003;	/* Enable bp & user interrupts */	\
+   	I810_WRITE16( I810REG_INT_ENABLE_R, tmp );			\
+} while (0)
+
+#define DRIVER_UNINSTALL() do {						\
+	drm_i810_private_t *dev_priv =					\
+				(drm_i810_private_t *)dev->dev_private;	\
+	u16 tmp;							\
+   	tmp = I810_READ16( I810REG_INT_IDENTITY_R );			\
+   	tmp = tmp & ~(0x6000);		/* Clear all interrupts */	\
+   	if ( tmp != 0 ) I810_WRITE16( I810REG_INT_IDENTITY_R, tmp );	\
+									\
+   	tmp = I810_READ16( I810REG_INT_ENABLE_R );			\
+   	tmp = tmp & 0x6000;		/* Disable all interrupts */	\
+   	I810_WRITE16( I810REG_INT_ENABLE_R, tmp );			\
+} while (0)
+
+/* Buffer customization:
+ */
+
+#define DRIVER_BUF_PRIV_T	drm_i810_buf_priv_t
+
+#define DRIVER_AGP_BUFFERS_MAP( dev )					\
+	((drm_i810_private_t *)((dev)->dev_private))->buffer_map
+
+#endif
diff --git a/linux/radeon_cp.c b/linux/radeon_cp.c
index 5d662bc0..257f37e7 100644
--- a/linux/radeon_cp.c
+++ b/linux/radeon_cp.c
@@ -621,6 +621,7 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev )
 static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 {
 	drm_radeon_private_t *dev_priv;
+	drm_radeon_depth_clear_t *depth_clear;
         int i;
 
 	dev_priv = drm_alloc( sizeof(drm_radeon_private_t), DRM_MEM_DRIVER );
@@ -705,32 +706,31 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 	 * all values to prevent unwanted 3D state from slipping through
 	 * and screwing with the clear operation.
 	 */
-	dev_priv->depth_clear.rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
-					   RADEON_Z_ENABLE |
-					   (dev_priv->color_fmt << 10) |
-					   RADEON_ZBLOCK16);
-
-	dev_priv->depth_clear.rb3d_zstencilcntl = (dev_priv->depth_fmt |
-						   RADEON_Z_TEST_ALWAYS |
-						   RADEON_STENCIL_TEST_ALWAYS |
-						   RADEON_STENCIL_S_FAIL_KEEP |
-						   RADEON_STENCIL_ZPASS_KEEP |
-						   RADEON_STENCIL_ZFAIL_KEEP |
-						   RADEON_Z_WRITE_ENABLE);
-
-	dev_priv->depth_clear.se_cntl = (RADEON_FFACE_CULL_CW |
-					 RADEON_BFACE_SOLID |
-					 RADEON_FFACE_SOLID |
-					 RADEON_FLAT_SHADE_VTX_LAST |
-
-					 RADEON_DIFFUSE_SHADE_FLAT |
-					 RADEON_ALPHA_SHADE_FLAT |
-					 RADEON_SPECULAR_SHADE_FLAT |
-					 RADEON_FOG_SHADE_FLAT |
-
-					 RADEON_VTX_PIX_CENTER_OGL |
-					 RADEON_ROUND_MODE_TRUNC |
-					 RADEON_ROUND_PREC_8TH_PIX);
+	depth_clear = &dev_priv->depth_clear;
+
+	depth_clear->rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
+				  (dev_priv->color_fmt << 10) |
+				  RADEON_ZBLOCK16);
+
+	depth_clear->rb3d_zstencilcntl = (dev_priv->depth_fmt |
+					  RADEON_Z_TEST_ALWAYS |
+					  RADEON_STENCIL_TEST_ALWAYS |
+					  RADEON_STENCIL_FAIL_REPLACE |
+					  RADEON_STENCIL_ZPASS_REPLACE |
+					  RADEON_STENCIL_ZFAIL_REPLACE |
+					  RADEON_Z_WRITE_ENABLE);
+
+	depth_clear->se_cntl = (RADEON_FFACE_CULL_CW |
+				RADEON_BFACE_SOLID |
+				RADEON_FFACE_SOLID |
+				RADEON_FLAT_SHADE_VTX_LAST |
+				RADEON_DIFFUSE_SHADE_FLAT |
+				RADEON_ALPHA_SHADE_FLAT |
+				RADEON_SPECULAR_SHADE_FLAT |
+				RADEON_FOG_SHADE_FLAT |
+				RADEON_VTX_PIX_CENTER_OGL |
+				RADEON_ROUND_MODE_TRUNC |
+				RADEON_ROUND_PREC_8TH_PIX);
 
 	/* FIXME: We want multiple shared areas, including one shared
 	 * only by the X Server and kernel module.
diff --git a/linux/radeon_drm.h b/linux/radeon_drm.h
index 6cf92863..25154422 100644
--- a/linux/radeon_drm.h
+++ b/linux/radeon_drm.h
@@ -57,7 +57,7 @@
 #define RADEON_FRONT			0x1
 #define RADEON_BACK			0x2
 #define RADEON_DEPTH			0x4
-
+#define RADEON_STENCIL			0x8
 
 /* Vertex/indirect buffer size
  */
@@ -141,6 +141,8 @@ typedef struct {
 	unsigned int se_vport_yoffset;
 	unsigned int se_vport_zscale;
 	unsigned int se_vport_zoffset;
+	unsigned int se_zbias_factor;
+	unsigned int se_zbias_constant;
 } drm_radeon_viewport_state_t;
 
 /* Setup state */
@@ -212,12 +214,12 @@ typedef struct {
 /* Space is crucial; there is some redunancy here:
  */
 typedef struct {
-	unsigned int start;	
-	unsigned int finish;	
+	unsigned int start;
+	unsigned int finish;
 	unsigned int prim:8;
 	unsigned int stateidx:8;
 	unsigned int numverts:16; /* overloaded as offset/64 for elt prims */
-        unsigned int vc_format;		
+        unsigned int vc_format;
 } drm_radeon_prim_t;
 
 /* Really need a bigger area to hold the primitive and state data:
@@ -304,6 +306,7 @@ typedef struct drm_radeon_clear {
 	unsigned int clear_color;
 	unsigned int clear_colormask;
 	unsigned int clear_depth;
+	unsigned int clear_stencil;
 	union {
 		float f[5];
 		unsigned int ui[5];
diff --git a/linux/radeon_drv.h b/linux/radeon_drv.h
index bead83e0..f0e1f9f0 100644
--- a/linux/radeon_drv.h
+++ b/linux/radeon_drv.h
@@ -326,9 +326,9 @@ extern int  radeon_context_switch_complete(drm_device_t *dev, int new);
 #	define RADEON_Z_TEST_MASK		(7 << 4)
 #	define RADEON_Z_TEST_ALWAYS		(7 << 4)
 #	define RADEON_STENCIL_TEST_ALWAYS	(7 << 12)
-#	define RADEON_STENCIL_S_FAIL_KEEP	(0 << 16)
-#	define RADEON_STENCIL_ZPASS_KEEP	(0 << 20)
-#	define RADEON_STENCIL_ZFAIL_KEEP	(0 << 20)
+#	define RADEON_STENCIL_FAIL_REPLACE	(2 << 16)
+#	define RADEON_STENCIL_ZPASS_REPLACE	(2 << 20)
+#	define RADEON_STENCIL_ZFAIL_REPLACE	(2 << 24)
 #	define RADEON_Z_WRITE_ENABLE		(1 << 30)
 #define RADEON_RBBM_SOFT_RESET		0x00f0
 #	define RADEON_SOFT_RESET_CP		(1 <<  0)
@@ -705,6 +705,11 @@ do {									\
 	write &= mask;							\
 } while (0)
 
+#define OUT_RING_REG( reg, val ) do {					\
+	OUT_RING( CP_PACKET0( reg, 0 ) );				\
+	OUT_RING( val );						\
+} while (0)
+
 #define RADEON_PERFORMANCE_BOXES	0
 
 #endif /* __RADEON_DRV_H__ */
diff --git a/linux/radeon_state.c b/linux/radeon_state.c
index 6ef4f15f..501920d4 100644
--- a/linux/radeon_state.c
+++ b/linux/radeon_state.c
@@ -23,9 +23,8 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *    Kevin E. Martin <martin@valinux.com>
  *    Gareth Hughes <gareth@valinux.com>
- *
+ *    Kevin E. Martin <martin@valinux.com>
  */
 
 #define __NO_VERSION__
@@ -141,15 +140,17 @@ static inline void radeon_emit_viewport( drm_radeon_private_t *dev_priv,
 	RING_LOCALS;
 	DRM_DEBUG( "    %s\n", __FUNCTION__ );
 
-	BEGIN_RING( 7 );
+	BEGIN_RING( 9 );
 
-	OUT_RING( CP_PACKET0( RADEON_SE_VPORT_XSCALE, 5 ) );
+	OUT_RING( CP_PACKET0( RADEON_SE_VPORT_XSCALE, 7 ) );
 	OUT_RING( viewport->se_vport_xscale );
 	OUT_RING( viewport->se_vport_xoffset );
 	OUT_RING( viewport->se_vport_yscale );
 	OUT_RING( viewport->se_vport_yoffset );
 	OUT_RING( viewport->se_vport_zscale );
 	OUT_RING( viewport->se_vport_zoffset );
+	OUT_RING( viewport->se_zbias_factor );
+	OUT_RING( viewport->se_zbias_constant );
 
 	ADVANCE_RING();
 }
@@ -440,12 +441,14 @@ static void radeon_cp_dispatch_clear( drm_device_t *dev,
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 	drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+	drm_radeon_depth_clear_t *depth_clear = &dev_priv->depth_clear;
 	int nbox = sarea_priv->nbox;
 	drm_clip_rect_t *pbox = sarea_priv->boxes;
 	unsigned int flags = clear->flags;
+	u32 rb3d_cntl = 0, rb3d_stencilrefmask= 0;
 	int i;
 	RING_LOCALS;
-	DRM_DEBUG( "%s\n", __FUNCTION__ );
+	DRM_DEBUG( __FUNCTION__": flags = 0x%x\n", flags );
 
 	radeon_update_ring_snapshot( dev_priv );
 
@@ -457,6 +460,32 @@ static void radeon_cp_dispatch_clear( drm_device_t *dev,
 		if ( tmp & RADEON_BACK )  flags |= RADEON_FRONT;
 	}
 
+	/* We have to clear the depth and/or stencil buffers by
+	 * rendering a quad into just those buffers.  Thus, we have to
+	 * make sure the 3D engine is configured correctly.
+	 */
+	if ( flags & (RADEON_DEPTH | RADEON_STENCIL) ) {
+		if ( sarea_priv->state[0].dirty ) {
+			radeon_emit_state( dev_priv,
+					   &sarea_priv->state[0] );
+		}
+		rb3d_cntl = depth_clear->rb3d_cntl;
+
+		if ( flags & RADEON_DEPTH ) {
+			rb3d_cntl |=  RADEON_Z_ENABLE;
+		} else {
+			rb3d_cntl &= ~RADEON_Z_ENABLE;
+		}
+
+		if ( flags & RADEON_STENCIL ) {
+			rb3d_cntl |=  RADEON_STENCIL_ENABLE;
+			rb3d_stencilrefmask = clear->clear_stencil;
+		} else {
+			rb3d_cntl &= ~RADEON_STENCIL_ENABLE;
+			rb3d_stencilrefmask = 0x00000000;
+		}
+	}
+
 	for ( i = 0 ; i < nbox ; i++ ) {
 		int x = pbox[i].x1;
 		int y = pbox[i].y1;
@@ -522,34 +551,28 @@ static void radeon_cp_dispatch_clear( drm_device_t *dev,
 			OUT_RING( (w << 16) | h );
 
 			ADVANCE_RING();
-
 		}
 
-		if ( flags & RADEON_DEPTH ) {
-			drm_radeon_depth_clear_t *depth_clear =
-			   &dev_priv->depth_clear;
-
-			if ( sarea_priv->state[0].dirty ) {
-				radeon_emit_state( dev_priv,
-						   &sarea_priv->state[0] );
-			}
-
-			/* FIXME: Render a rectangle to clear the depth
-			 * buffer.  So much for those "fast Z clears"...
+		if ( flags & (RADEON_DEPTH | RADEON_STENCIL) ) {
+			/* FIXME: Emit cliprect...
 			 */
-			BEGIN_RING( 23 );
+
+			BEGIN_RING( 25 );
 
 			RADEON_WAIT_UNTIL_2D_IDLE();
 
 			OUT_RING( CP_PACKET0( RADEON_PP_CNTL, 1 ) );
 			OUT_RING( 0x00000000 );
-			OUT_RING( depth_clear->rb3d_cntl );
-			OUT_RING( CP_PACKET0( RADEON_RB3D_ZSTENCILCNTL, 0 ) );
-			OUT_RING( depth_clear->rb3d_zstencilcntl );
-			OUT_RING( CP_PACKET0( RADEON_RB3D_PLANEMASK, 0 ) );
-			OUT_RING( 0x00000000 );
-			OUT_RING( CP_PACKET0( RADEON_SE_CNTL, 0 ) );
-			OUT_RING( depth_clear->se_cntl );
+			OUT_RING( rb3d_cntl );
+
+			OUT_RING_REG( RADEON_RB3D_ZSTENCILCNTL,
+				      depth_clear->rb3d_zstencilcntl );
+			OUT_RING_REG( RADEON_RB3D_STENCILREFMASK,
+				      rb3d_stencilrefmask );
+			OUT_RING_REG( RADEON_RB3D_PLANEMASK,
+				      0x00000000 );
+			OUT_RING_REG( RADEON_SE_CNTL,
+				      depth_clear->se_cntl );
 
 			OUT_RING( CP_PACKET3( RADEON_3D_DRAW_IMMD, 10 ) );
 			OUT_RING( RADEON_VTX_Z_PRESENT );
@@ -722,7 +745,7 @@ static void radeon_cp_dispatch_vertex( drm_device_t *dev,
 	int i = 0;
 	RING_LOCALS;
 
-	DRM_DEBUG( "%s: nbox=%d %d..%d prim %x nvert %d\n", 
+	DRM_DEBUG( "%s: nbox=%d %d..%d prim %x nvert %d\n",
 		__FUNCTION__, sarea_priv->nbox,
 		prim->start, prim->finish, prim->prim,
 		numverts);
@@ -730,7 +753,7 @@ static void radeon_cp_dispatch_vertex( drm_device_t *dev,
 	radeon_update_ring_snapshot( dev_priv );
 
 	buf_priv->dispatched = 1;
-	
+
 	do {
 		/* Emit the next set of up to three cliprects */
 		if ( i < sarea_priv->nbox ) {
@@ -791,7 +814,7 @@ static void radeon_cp_dispatch_indirect( drm_device_t *dev,
 		   buf->idx, start, end );
 
 	radeon_update_ring_snapshot( dev_priv );
-	
+
 	if ( start != end ) {
 		int offset = (dev_priv->agp_buffers_offset
 			      + buf->offset + start);
@@ -842,20 +865,20 @@ static void radeon_cp_dispatch_indices( drm_device_t *dev,
 /*  		offset); */
 
 	radeon_update_ring_snapshot( dev_priv );
-	
+
 	if ( start < prim->finish ) {
 		buf_priv->dispatched = 1;
 
 		dwords = (prim->finish - prim->start + 3) / sizeof(u32);
 
-		data = (u32 *)((char *)dev_priv->buffers->handle + 
+		data = (u32 *)((char *)dev_priv->buffers->handle +
 			       elt_buf->offset + prim->start);
 
 		data[0] = CP_PACKET3( RADEON_3D_RNDR_GEN_INDX_PRIM, dwords-2 );
 		data[1] = offset;
 		data[2] = RADEON_MAX_VB_VERTS;
 		data[3] = prim->vc_format;
-		data[4] = (prim->prim | 
+		data[4] = (prim->prim |
 			   RADEON_PRIM_WALK_IND |
 			   RADEON_COLOR_ORDER_RGBA |
 			   RADEON_VTX_FMT_RADEON_MODE |
@@ -872,7 +895,7 @@ static void radeon_cp_dispatch_indices( drm_device_t *dev,
 /*  		printk("data[3]: %x\n", data[3]); */
 /*  		printk("data[4]: %x\n", data[4]); */
 /*  		for (i = 0 ; i < 10 ; i++) */
-/*  		   printk("%d: %d\n", i, ((short *)(data+5))[i]); */		
+/*  		   printk("%d: %d\n", i, ((short *)(data+5))[i]); */
 /*  		printk("...\n"); */
 
 		if (1)
@@ -883,8 +906,8 @@ static void radeon_cp_dispatch_indices( drm_device_t *dev,
 						       &sarea_priv->boxes[i] );
 			}
 
-			radeon_cp_dispatch_indirect( dev, elt_buf, 
-						     prim->start, 
+			radeon_cp_dispatch_indirect( dev, elt_buf,
+						     prim->start,
 						     prim->finish );
 
 			i++;
@@ -1157,11 +1180,11 @@ int radeon_cp_vertex( struct inode *inode, struct file *filp,
 		}
 
 		if ( prim->stateidx != 0xff ) {
-			radeon_emit_state( dev_priv, 
+			radeon_emit_state( dev_priv,
 					   &sarea_priv->state[prim->stateidx] );
 		}
 
-		if ( prim->finish <= prim->start ) 
+		if ( prim->finish <= prim->start )
 		   continue;
 
 		if ( prim->start & 0x7 ) {
@@ -1174,7 +1197,7 @@ int radeon_cp_vertex( struct inode *inode, struct file *filp,
 		} else {
 			radeon_cp_dispatch_vertex( dev, buf, prim );
 		}
-			
+
 	}
 
 	if (vertex.discard) {