Merge from trunk.texmem-0-0-1

62 files changed, 776 insertions, 3239 deletions

diff --git a/linux-core/Config.in b/linux-core/Config.in
index 5cc13e84..45bba136 100644
--- a/linux-core/Config.in
+++ b/linux-core/Config.in
@@ -5,13 +5,12 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 #
 
-bool 'Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)' CONFIG_DRM
-if [ "$CONFIG_DRM" != "n" ]; then
-    tristate '  3dfx Banshee/Voodoo3+' CONFIG_DRM_TDFX
-    tristate '  3dlabs GMX 2000' CONFIG_DRM_GAMMA
-    tristate '  ATI Rage 128' CONFIG_DRM_R128
-    dep_tristate '  ATI Radeon' CONFIG_DRM_RADEON $CONFIG_AGP
-    dep_tristate '  Intel I810' CONFIG_DRM_I810 $CONFIG_AGP
-    dep_tristate '  Intel 830M' CONFIG_DRM_I830 $CONFIG_AGP
-    dep_tristate '  Matrox g200/g400' CONFIG_DRM_MGA $CONFIG_AGP
-fi
+tristate '  3dfx Banshee/Voodoo3+' CONFIG_DRM_TDFX
+#tristate '  3dlabs GMX 2000' CONFIG_DRM_GAMMA
+tristate '  ATI Rage 128' CONFIG_DRM_R128
+tristate '  ATI Radeon' CONFIG_DRM_RADEON
+dep_tristate '  Intel I810' CONFIG_DRM_I810 $CONFIG_AGP
+dep_tristate '  Intel 830M/845G/852GM/855GM/865G' CONFIG_DRM_I830 $CONFIG_AGP
+dep_tristate '  Matrox g200/g400' CONFIG_DRM_MGA $CONFIG_AGP
+tristate '  SiS' CONFIG_DRM_SIS
+
diff --git a/linux-core/Makefile.kernel b/linux-core/Makefile.kernel
index 7e659dfd..5f79e430 100644
--- a/linux-core/Makefile.kernel
+++ b/linux-core/Makefile.kernel
@@ -1,19 +1,41 @@
 #
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
-
-O_TARGET	:= drm.o
-list-multi	:= gamma.o tdfx.o r128.o mga.o i810.o i830.o radeon.o ffb.o
+#
+# Based on David Woodhouse's mtd build.
+#
+# $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/Makefile.kernel,v 1.17 2003/04/12 17:18:17 dawes Exp $
+#
 
 gamma-objs  := gamma_drv.o gamma_dma.o
 tdfx-objs   := tdfx_drv.o
-r128-objs   := r128_drv.o r128_cce.o r128_irq.o r128_state.o
-mga-objs    := mga_drv.o mga_dma.o mga_irq.o mga_state.o mga_warp.o
+r128-objs   := r128_drv.o r128_cce.o r128_state.o r128_irq.o
+mga-objs    := mga_drv.o mga_dma.o mga_state.o mga_warp.o mga_irq.o 
 i810-objs   := i810_drv.o i810_dma.o
 i830-objs   := i830_drv.o i830_dma.o i830_irq.o
-radeon-objs := radeon_drv.o radeon_cp.o radeon_irq.o radeon_mem.o radeon_state.o
+radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o
+sis-objs    := sis_drv.o sis_ds.o sis_mm.o
 ffb-objs    := ffb_drv.o ffb_context.o
 
+# Kernel version checks
+
+BELOW25 := $(shell if [ $(PATCHLEVEL) -lt 5 ]; then echo y; fi)
+
+# There were major build changes starting with 2.5.52
+ifneq ($(BELOW25),y)
+BELOW2552 := $(shell if [ $(SUBLEVEL) -lt 52 ]; then echo y; fi)
+else
+BELOW2552 := y
+endif
+
+ifeq ($(BELOW25),y)
+O_TARGET	:= drm.o
+list-multi	:= gamma.o tdfx.o r128.o mga.o i810.o i830.o ffb.o radeon.o
+obj-m		:=
+obj-n		:=
+obj-		:=
+endif
+
 obj-$(CONFIG_DRM_GAMMA) += gamma.o
 obj-$(CONFIG_DRM_TDFX)	+= tdfx.o
 obj-$(CONFIG_DRM_R128)	+= r128.o
@@ -21,10 +43,14 @@ obj-$(CONFIG_DRM_RADEON)+= radeon.o
 obj-$(CONFIG_DRM_MGA)	+= mga.o
 obj-$(CONFIG_DRM_I810)	+= i810.o
 obj-$(CONFIG_DRM_I830)	+= i830.o
+obj-$(CONFIG_DRM_SIS)   += sis.o
 obj-$(CONFIG_DRM_FFB)   += ffb.o
 
+ifeq ($(BELOW2552),y)
 include $(TOPDIR)/Rules.make
+endif
 
+ifeq ($(BELOW25),y)
 gamma.o: $(gamma-objs) $(lib)
 	$(LD) -r -o $@ $(gamma-objs) $(lib)
 
@@ -46,5 +72,10 @@ r128.o: $(r128-objs) $(lib)
 radeon.o: $(radeon-objs) $(lib)
 	$(LD) -r -o $@ $(radeon-objs) $(lib)
 
+sis.o: $(sis-objs) $(lib)
+	$(LD) -r -o $@ $(sis-objs) $(lib)
+
 ffb.o: $(ffb-objs) $(lib)
 	$(LD) -r -o $@ $(ffb-objs) $(lib)
+endif
+
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index a6b32285..2cdc5f09 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -67,7 +67,16 @@
 #include <linux/types.h>
 #include <linux/agp_backend.h>
 #endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,41)
+#define HAS_WORKQUEUE 0
+#else
+#define HAS_WORKQUEUE 1
+#endif
+#if !HAS_WORKQUEUE
 #include <linux/tqueue.h>
+#else
+#include <linux/workqueue.h>
+#endif
 #include <linux/poll.h>
 #include <asm/pgalloc.h>
 #include "drm.h"
@@ -97,9 +106,6 @@
 #ifndef __HAVE_DMA_FREELIST
 #define __HAVE_DMA_FREELIST	0
 #endif
-#ifndef __HAVE_DMA_HISTOGRAM
-#define __HAVE_DMA_HISTOGRAM	0
-#endif
 
 #define __REALLY_HAVE_AGP	(__HAVE_AGP && (defined(CONFIG_AGP) || \
 						defined(CONFIG_AGP_MODULE)))
@@ -121,7 +127,6 @@
 #define DRM_LOCK_SLICE	      1	/* Time slice for lock, in jiffies	  */
 
 #define DRM_FLAG_DEBUG	  0x01
-#define DRM_FLAG_NOCTX	  0x02
 
 #define DRM_MEM_DMA	   0
 #define DRM_MEM_SAREA	   1
@@ -172,6 +177,15 @@
 		pos = n, n = pos->next)
 #endif
 
+#ifndef list_for_each_entry
+#define list_for_each_entry(pos, head, member)				\
+       for (pos = list_entry((head)->next, typeof(*pos), member),	\
+                    prefetch(pos->member.next);				\
+            &pos->member != (head);					\
+            pos = list_entry(pos->member.next, typeof(*pos), member),	\
+                    prefetch(pos->member.next))
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
 static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 {
@@ -197,7 +211,7 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+#ifndef REMAP_PAGE_RANGE_5_ARGS
 #define DRM_RPR_ARG(vma)
 #else
 #define DRM_RPR_ARG(vma) vma,
@@ -249,17 +263,17 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 			DRM(ioremapfree)( (map)->handle, (map)->size );	\
 	} while (0)
 
-#define DRM_FIND_MAP(_map, _o)						\
-do {									\
-	struct list_head *_list;					\
-	list_for_each( _list, &dev->maplist->head ) {			\
-		drm_map_list_t *_entry = (drm_map_list_t *)_list;	\
-		if ( _entry->map &&					\
-		     _entry->map->offset == (_o) ) {			\
-			(_map) = _entry->map;				\
-			break;						\
- 		}							\
-	}								\
+#define DRM_FIND_MAP(_map, _o)								\
+do {											\
+	struct list_head *_list;							\
+	list_for_each( _list, &dev->maplist->head ) {					\
+		drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );	\
+		if ( _entry->map &&							\
+		     _entry->map->offset == (_o) ) {					\
+			(_map) = _entry->map;						\
+			break;								\
+ 		}									\
+	}										\
 } while(0)
 #define DRM_DROP_MAP(_map)
 
@@ -347,38 +361,11 @@ typedef struct drm_buf {
 		DRM_LIST_RECLAIM = 5
 	}		  list;	       /* Which list we're on		     */
 
-#if DRM_DMA_HISTOGRAM
-	cycles_t	  time_queued;	   /* Queued to kernel DMA queue     */
-	cycles_t	  time_dispatched; /* Dispatched to hardware	     */
-	cycles_t	  time_completed;  /* Completed by hardware	     */
-	cycles_t	  time_freed;	   /* Back on freelist		     */
-#endif
 
 	int		  dev_priv_size; /* Size of buffer private stoarge   */
 	void		  *dev_private;  /* Per-buffer private storage       */
 } drm_buf_t;
 
-#if DRM_DMA_HISTOGRAM
-#define DRM_DMA_HISTOGRAM_SLOTS		  9
-#define DRM_DMA_HISTOGRAM_INITIAL	 10
-#define DRM_DMA_HISTOGRAM_NEXT(current)	 ((current)*10)
-typedef struct drm_histogram {
-	atomic_t	  total;
-
-	atomic_t	  queued_to_dispatched[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  dispatched_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  completed_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
-
-	atomic_t	  queued_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  queued_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
-
-	atomic_t	  dma[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  schedule[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  ctx[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  lacq[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  lhld[DRM_DMA_HISTOGRAM_SLOTS];
-} drm_histogram_t;
-#endif
 
 				/* bufs is one longer than it has to be */
 typedef struct drm_waitlist {
@@ -430,6 +417,7 @@ typedef struct drm_file {
 	struct drm_file	  *prev;
 	struct drm_device *dev;
 	int 		  remove_auth_on_close;
+	unsigned long     lock_count;
 } drm_file_t;
 
 
@@ -606,7 +594,11 @@ typedef struct drm_device {
 	int		  last_checked;	/* Last context checked for DMA	   */
 	int		  last_context;	/* Last current context		   */
 	unsigned long	  last_switch;	/* jiffies at last context switch  */
+#if !HAS_WORKQUEUE
 	struct tq_struct  tq;
+#else
+	struct work_struct	work;
+#endif
 #if __HAVE_VBL_IRQ
    	wait_queue_head_t vbl_queue;
    	atomic_t          vbl_received;
@@ -616,9 +608,6 @@ typedef struct drm_device {
 #endif
 	cycles_t	  ctx_start;
 	cycles_t	  lck_start;
-#if __HAVE_DMA_HISTOGRAM
-	drm_histogram_t	  histo;
-#endif
 
 				/* Callback to X server for context switch
 				   and for heavy-handed reset. */
@@ -674,13 +663,7 @@ extern int           DRM(unlock)(struct inode *inode, struct file *filp,
 extern int	     DRM(open_helper)(struct inode *inode, struct file *filp,
 				      drm_device_t *dev);
 extern int	     DRM(flush)(struct file *filp);
-extern int	     DRM(release_fuck)(struct inode *inode, struct file *filp);
 extern int	     DRM(fasync)(int fd, struct file *filp, int on);
-extern ssize_t	     DRM(read)(struct file *filp, char *buf, size_t count,
-			       loff_t *off);
-extern int	     DRM(write_string)(drm_device_t *dev, const char *s);
-extern unsigned int  DRM(poll)(struct file *filp,
-			       struct poll_table_struct *wait);
 
 				/* Mapping support (drm_vm.h) */
 extern struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
@@ -785,12 +768,11 @@ extern int	     DRM(getmagic)(struct inode *inode, struct file *filp,
 extern int	     DRM(authmagic)(struct inode *inode, struct file *filp,
 				    unsigned int cmd, unsigned long arg);
 
+                                /* Placeholder for ioctls past */
+extern int	     DRM(noop)(struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg);
 
 				/* Locking IOCTL support (drm_lock.h) */
-extern int	     DRM(block)(struct inode *inode, struct file *filp,
-				unsigned int cmd, unsigned long arg);
-extern int	     DRM(unblock)(struct inode *inode, struct file *filp,
-				  unsigned int cmd, unsigned long arg);
 extern int	     DRM(lock_take)(__volatile__ unsigned int *lock,
 				    unsigned int context);
 extern int	     DRM(lock_transfer)(drm_device_t *dev,
@@ -830,15 +812,6 @@ extern int	     DRM(dma_setup)(drm_device_t *dev);
 extern void	     DRM(dma_takedown)(drm_device_t *dev);
 extern void	     DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf);
 extern void	     DRM(reclaim_buffers)( struct file *filp );
-#if __HAVE_OLD_DMA
-/* GH: This is a dirty hack for now...
- */
-extern void	     DRM(clear_next_buffer)(drm_device_t *dev);
-extern int	     DRM(select_queue)(drm_device_t *dev,
-				       void (*wrapper)(unsigned long));
-extern int	     DRM(dma_enqueue)(struct file *filp, drm_dma_t *dma);
-extern int	     DRM(dma_get_buffers)(struct file *filp, drm_dma_t *dma);
-#endif
 #if __HAVE_DMA_IRQ
 extern int           DRM(control)( struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg );
@@ -859,25 +832,7 @@ extern void          DRM(vbl_send_signals)( drm_device_t *dev );
 extern void          DRM(dma_immediate_bh)( void *dev );
 #endif
 #endif
-#if DRM_DMA_HISTOGRAM
-extern int	     DRM(histogram_slot)(unsigned long count);
-extern void	     DRM(histogram_compute)(drm_device_t *dev, drm_buf_t *buf);
-#endif
 
-				/* Buffer list support (drm_lists.h) */
-#if __HAVE_DMA_WAITLIST
-extern int	     DRM(waitlist_create)(drm_waitlist_t *bl, int count);
-extern int	     DRM(waitlist_destroy)(drm_waitlist_t *bl);
-extern int	     DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf);
-extern drm_buf_t     *DRM(waitlist_get)(drm_waitlist_t *bl);
-#endif
-#if __HAVE_DMA_FREELIST
-extern int	     DRM(freelist_create)(drm_freelist_t *bl, int count);
-extern int	     DRM(freelist_destroy)(drm_freelist_t *bl);
-extern int	     DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl,
-				       drm_buf_t *buf);
-extern drm_buf_t     *DRM(freelist_get)(drm_freelist_t *bl, int block);
-#endif
 #endif /* __HAVE_DMA */
 
 #if __REALLY_HAVE_AGP
diff --git a/linux-core/drm_agpsupport.c b/linux-core/drm_agpsupport.c
index 35dd866f..22790900 100644
--- a/linux-core/drm_agpsupport.c
+++ b/linux-core/drm_agpsupport.c
@@ -147,7 +147,7 @@ int DRM(agp_alloc)(struct inode *inode, struct file *filp,
 		return -ENOMEM;
 	}
 
-	entry->handle    = (unsigned long)memory->memory;
+	entry->handle    = (unsigned long)memory->key;
 	entry->memory    = memory;
 	entry->bound     = 0;
 	entry->pages     = pages;
@@ -187,6 +187,7 @@ int DRM(agp_unbind)(struct inode *inode, struct file *filp,
 	drm_device_t	  *dev	 = priv->dev;
 	drm_agp_binding_t request;
 	drm_agp_mem_t     *entry;
+	int ret;
 
 	if (!dev->agp || !dev->agp->acquired) return -EINVAL;
 	if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request)))
@@ -194,7 +195,10 @@ int DRM(agp_unbind)(struct inode *inode, struct file *filp,
 	if (!(entry = DRM(agp_lookup_entry)(dev, request.handle)))
 		return -EINVAL;
 	if (!entry->bound) return -EINVAL;
-	return DRM(unbind_agp)(entry->memory);
+	ret = DRM(unbind_agp)(entry->memory);
+	if (ret == 0)
+	    entry->bound = 0;
+	return ret;
 }
 
 int DRM(agp_bind)(struct inode *inode, struct file *filp,
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c
index b4e73699..97997dc1 100644
--- a/linux-core/drm_bufs.c
+++ b/linux-core/drm_bufs.c
@@ -211,7 +211,7 @@ int DRM(rmmap)(struct inode *inode, struct file *filp,
 	down(&dev->struct_sem);
 	list = &dev->maplist->head;
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *) list;
+		r_list = list_entry(list, drm_map_list_t, head);
 
 		if(r_list->map &&
 		   r_list->map->handle == request.handle &&
@@ -416,12 +416,6 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 		}
 		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 );
 
@@ -618,12 +612,6 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
 			buf->pending = 0;
 			init_waitqueue_head( &buf->dma_wait );
 			buf->filp    = 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 );
 		}
@@ -790,12 +778,6 @@ int DRM(addbufs_sg)( struct inode *inode, struct file *filp,
 
 		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 );
 
diff --git a/linux-core/drm_context.c b/linux-core/drm_context.c
index 39267b14..3853a7c6 100644
--- a/linux-core/drm_context.c
+++ b/linux-core/drm_context.c
@@ -36,7 +36,10 @@
 #define __NO_VERSION__
 #include "drmP.h"
 
-#if __HAVE_CTX_BITMAP
+#if !__HAVE_CTX_BITMAP
+#error "__HAVE_CTX_BITMAP must be defined"
+#endif
+
 
 /* ================================================================
  * Context bitmap support
@@ -195,7 +198,7 @@ int DRM(setsareactx)(struct inode *inode, struct file *filp,
 
 	down(&dev->struct_sem);
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		if(r_list->map &&
 		   r_list->map->handle == request.handle)
 			goto found;
@@ -222,16 +225,11 @@ found:
 
 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 );
 
@@ -240,13 +238,6 @@ int DRM(context_switch)( drm_device_t *dev, int old, int new )
                 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;
 }
 
@@ -262,11 +253,6 @@ int DRM(context_switch_complete)( drm_device_t *dev, int new )
 				/* 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 );
 
@@ -407,375 +393,3 @@ int DRM(rmctx)( struct inode *inode, struct file *filp,
 	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 = DRM(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_dma.c b/linux-core/drm_dma.c
index 4ea6b07d..640e245d 100644
--- a/linux-core/drm_dma.c
+++ b/linux-core/drm_dma.c
@@ -127,61 +127,6 @@ void DRM(dma_takedown)(drm_device_t *dev)
 }
 
 
-#if __HAVE_DMA_HISTOGRAM
-/* This is slow, but is useful for debugging. */
-int DRM(histogram_slot)(unsigned long count)
-{
-	int value = DRM_DMA_HISTOGRAM_INITIAL;
-	int slot;
-
-	for (slot = 0;
-	     slot < DRM_DMA_HISTOGRAM_SLOTS;
-	     ++slot, value = DRM_DMA_HISTOGRAM_NEXT(value)) {
-		if (count < value) return slot;
-	}
-	return DRM_DMA_HISTOGRAM_SLOTS - 1;
-}
-
-void DRM(histogram_compute)(drm_device_t *dev, drm_buf_t *buf)
-{
-	cycles_t queued_to_dispatched;
-	cycles_t dispatched_to_completed;
-	cycles_t completed_to_freed;
-	int	 q2d, d2c, c2f, q2c, q2f;
-
-	if (buf->time_queued) {
-		queued_to_dispatched	= (buf->time_dispatched
-					   - buf->time_queued);
-		dispatched_to_completed = (buf->time_completed
-					   - buf->time_dispatched);
-		completed_to_freed	= (buf->time_freed
-					   - buf->time_completed);
-
-		q2d = DRM(histogram_slot)(queued_to_dispatched);
-		d2c = DRM(histogram_slot)(dispatched_to_completed);
-		c2f = DRM(histogram_slot)(completed_to_freed);
-
-		q2c = DRM(histogram_slot)(queued_to_dispatched
-					  + dispatched_to_completed);
-		q2f = DRM(histogram_slot)(queued_to_dispatched
-					  + dispatched_to_completed
-					  + completed_to_freed);
-
-		atomic_inc(&dev->histo.total);
-		atomic_inc(&dev->histo.queued_to_dispatched[q2d]);
-		atomic_inc(&dev->histo.dispatched_to_completed[d2c]);
-		atomic_inc(&dev->histo.completed_to_freed[c2f]);
-
-		atomic_inc(&dev->histo.queued_to_completed[q2c]);
-		atomic_inc(&dev->histo.queued_to_freed[q2f]);
-
-	}
-	buf->time_queued     = 0;
-	buf->time_dispatched = 0;
-	buf->time_completed  = 0;
-	buf->time_freed	     = 0;
-}
-#endif
 
 void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf)
 {
@@ -191,9 +136,6 @@ void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf)
 	buf->pending  = 0;
 	buf->filp     = 0;
 	buf->used     = 0;
-#if __HAVE_DMA_HISTOGRAM
-	buf->time_completed = get_cycles();
-#endif
 
 	if ( __HAVE_DMA_WAITQUEUE && waitqueue_active(&buf->dma_wait)) {
 		wake_up_interruptible(&buf->dma_wait);
@@ -238,276 +180,6 @@ void DRM(reclaim_buffers)( struct file *filp )
 #endif
 
 
-/* GH: This is a big hack for now...
- */
-#if __HAVE_OLD_DMA
-
-void DRM(clear_next_buffer)(drm_device_t *dev)
-{
-	drm_device_dma_t *dma = dev->dma;
-
-	dma->next_buffer = NULL;
-	if (dma->next_queue && !DRM_BUFCOUNT(&dma->next_queue->waitlist)) {
-		wake_up_interruptible(&dma->next_queue->flush_queue);
-	}
-	dma->next_queue	 = NULL;
-}
-
-int DRM(select_queue)(drm_device_t *dev, void (*wrapper)(unsigned long))
-{
-	int	   i;
-	int	   candidate = -1;
-	int	   j	     = jiffies;
-
-	if (!dev) {
-		DRM_ERROR("No device\n");
-		return -1;
-	}
-	if (!dev->queuelist || !dev->queuelist[DRM_KERNEL_CONTEXT]) {
-				/* This only happens between the time the
-				   interrupt is initialized and the time
-				   the queues are initialized. */
-		return -1;
-	}
-
-				/* Doing "while locked" DMA? */
-	if (DRM_WAITCOUNT(dev, DRM_KERNEL_CONTEXT)) {
-		return DRM_KERNEL_CONTEXT;
-	}
-
-				/* If there are buffers on the last_context
-				   queue, and we have not been executing
-				   this context very long, continue to
-				   execute this context. */
-	if (dev->last_switch <= j
-	    && dev->last_switch + DRM_TIME_SLICE > j
-	    && DRM_WAITCOUNT(dev, dev->last_context)) {
-		return dev->last_context;
-	}
-
-				/* Otherwise, find a candidate */
-	for (i = dev->last_checked + 1; i < dev->queue_count; i++) {
-		if (DRM_WAITCOUNT(dev, i)) {
-			candidate = dev->last_checked = i;
-			break;
-		}
-	}
-
-	if (candidate < 0) {
-		for (i = 0; i < dev->queue_count; i++) {
-			if (DRM_WAITCOUNT(dev, i)) {
-				candidate = dev->last_checked = i;
-				break;
-			}
-		}
-	}
-
-	if (wrapper
-	    && candidate >= 0
-	    && candidate != dev->last_context
-	    && dev->last_switch <= j
-	    && dev->last_switch + DRM_TIME_SLICE > j) {
-		if (dev->timer.expires != dev->last_switch + DRM_TIME_SLICE) {
-			del_timer(&dev->timer);
-			dev->timer.function = wrapper;
-			dev->timer.data	    = (unsigned long)dev;
-			dev->timer.expires  = dev->last_switch+DRM_TIME_SLICE;
-			add_timer(&dev->timer);
-		}
-		return -1;
-	}
-
-	return candidate;
-}
-
-
-int DRM(dma_enqueue)(struct file *filp, drm_dma_t *d)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-	int		  i;
-	drm_queue_t	  *q;
-	drm_buf_t	  *buf;
-	int		  idx;
-	int		  while_locked = 0;
-	drm_device_dma_t  *dma = dev->dma;
-	DECLARE_WAITQUEUE(entry, current);
-
-	DRM_DEBUG("%d\n", d->send_count);
-
-	if (d->flags & _DRM_DMA_WHILE_LOCKED) {
-		int context = dev->lock.hw_lock->lock;
-
-		if (!_DRM_LOCK_IS_HELD(context)) {
-			DRM_ERROR("No lock held during \"while locked\""
-				  " request\n");
-			return -EINVAL;
-		}
-		if (d->context != _DRM_LOCKING_CONTEXT(context)
-		    && _DRM_LOCKING_CONTEXT(context) != DRM_KERNEL_CONTEXT) {
-			DRM_ERROR("Lock held by %d while %d makes"
-				  " \"while locked\" request\n",
-				  _DRM_LOCKING_CONTEXT(context),
-				  d->context);
-			return -EINVAL;
-		}
-		q = dev->queuelist[DRM_KERNEL_CONTEXT];
-		while_locked = 1;
-	} else {
-		q = dev->queuelist[d->context];
-	}
-
-
-	atomic_inc(&q->use_count);
-	if (atomic_read(&q->block_write)) {
-		add_wait_queue(&q->write_queue, &entry);
-		atomic_inc(&q->block_count);
-		for (;;) {
-			current->state = TASK_INTERRUPTIBLE;
-			if (!atomic_read(&q->block_write)) break;
-			schedule();
-			if (signal_pending(current)) {
-				atomic_dec(&q->use_count);
-				remove_wait_queue(&q->write_queue, &entry);
-				return -EINTR;
-			}
-		}
-		atomic_dec(&q->block_count);
-		current->state = TASK_RUNNING;
-		remove_wait_queue(&q->write_queue, &entry);
-	}
-
-	for (i = 0; i < d->send_count; i++) {
-		idx = d->send_indices[i];
-		if (idx < 0 || idx >= dma->buf_count) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Index %d (of %d max)\n",
-				  d->send_indices[i], dma->buf_count - 1);
-			return -EINVAL;
-		}
-		buf = dma->buflist[ idx ];
-		if (buf->filp != filp) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Process %d using buffer not owned\n",
-				  current->pid);
-			return -EINVAL;
-		}
-		if (buf->list != DRM_LIST_NONE) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Process %d using buffer %d on list %d\n",
-				  current->pid, buf->idx, buf->list);
-		}
-		buf->used	  = d->send_sizes[i];
-		buf->while_locked = while_locked;
-		buf->context	  = d->context;
-		if (!buf->used) {
-			DRM_ERROR("Queueing 0 length buffer\n");
-		}
-		if (buf->pending) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Queueing pending buffer:"
-				  " buffer %d, offset %d\n",
-				  d->send_indices[i], i);
-			return -EINVAL;
-		}
-		if (buf->waiting) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Queueing waiting buffer:"
-				  " buffer %d, offset %d\n",
-				  d->send_indices[i], i);
-			return -EINVAL;
-		}
-		buf->waiting = 1;
-		if (atomic_read(&q->use_count) == 1
-		    || atomic_read(&q->finalization)) {
-			DRM(free_buffer)(dev, buf);
-		} else {
-			DRM(waitlist_put)(&q->waitlist, buf);
-			atomic_inc(&q->total_queued);
-		}
-	}
-	atomic_dec(&q->use_count);
-
-	return 0;
-}
-
-static int DRM(dma_get_buffers_of_order)(struct file *filp, drm_dma_t *d,
-					 int order)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-	int		  i;
-	drm_buf_t	  *buf;
-	drm_device_dma_t  *dma = dev->dma;
-
-	for (i = d->granted_count; i < d->request_count; i++) {
-		buf = DRM(freelist_get)(&dma->bufs[order].freelist,
-					d->flags & _DRM_DMA_WAIT);
-		if (!buf) break;
-		if (buf->pending || buf->waiting) {
-			DRM_ERROR("Free buffer %d in use: filp %p (w%d, p%d)\n",
-				  buf->idx,
-				  buf->filp,
-				  buf->waiting,
-				  buf->pending);
-		}
-		buf->filp     = filp;
-		if (copy_to_user(&d->request_indices[i],
-				 &buf->idx,
-				 sizeof(buf->idx)))
-			return -EFAULT;
-
-		if (copy_to_user(&d->request_sizes[i],
-				 &buf->total,
-				 sizeof(buf->total)))
-			return -EFAULT;
-
-		++d->granted_count;
-	}
-	return 0;
-}
-
-
-int DRM(dma_get_buffers)(struct file *filp, drm_dma_t *dma)
-{
-	int		  order;
-	int		  retcode = 0;
-	int		  tmp_order;
-
-	order = DRM(order)(dma->request_size);
-
-	dma->granted_count = 0;
-	retcode		   = DRM(dma_get_buffers_of_order)(filp, dma, order);
-
-	if (dma->granted_count < dma->request_count
-	    && (dma->flags & _DRM_DMA_SMALLER_OK)) {
-		for (tmp_order = order - 1;
-		     !retcode
-			     && dma->granted_count < dma->request_count
-			     && tmp_order >= DRM_MIN_ORDER;
-		     --tmp_order) {
-
-			retcode = DRM(dma_get_buffers_of_order)(filp, dma,
-								tmp_order);
-		}
-	}
-
-	if (dma->granted_count < dma->request_count
-	    && (dma->flags & _DRM_DMA_LARGER_OK)) {
-		for (tmp_order = order + 1;
-		     !retcode
-			     && dma->granted_count < dma->request_count
-			     && tmp_order <= DRM_MAX_ORDER;
-		     ++tmp_order) {
-
-			retcode = DRM(dma_get_buffers_of_order)(filp, dma,
-								tmp_order);
-		}
-	}
-	return 0;
-}
-
-#endif /* __HAVE_OLD_DMA */
 
 
 #if __HAVE_DMA_IRQ
@@ -538,10 +210,14 @@ int DRM(irq_install)( drm_device_t *dev, int irq )
 	dev->dma->this_buffer = NULL;
 
 #if __HAVE_DMA_IRQ_BH
+#if !HAS_WORKQUEUE
 	INIT_LIST_HEAD( &dev->tq.list );
 	dev->tq.sync = 0;
 	dev->tq.routine = DRM(dma_immediate_bh);
 	dev->tq.data = dev;
+#else
+	INIT_WORK(&dev->work, DRM(dma_immediate_bh), dev);
+#endif
 #endif
 
 #if __HAVE_VBL_IRQ
@@ -655,7 +331,7 @@ int DRM(wait_vblank)( DRM_IOCTL_ARGS )
 		 * for the same vblank sequence number; nothing to be done in
 		 * that case
 		 */
-		list_for_each( ( (struct list_head *) vbl_sig ), &dev->vbl_sigs.head ) {
+		list_for_each_entry( vbl_sig, &dev->vbl_sigs.head, head ) {
 			if (vbl_sig->sequence == vblwait.request.sequence
 			    && vbl_sig->info.si_signo == vblwait.request.signal
 			    && vbl_sig->task == current)
@@ -706,19 +382,20 @@ done:
 
 void DRM(vbl_send_signals)( drm_device_t *dev )
 {
-	struct list_head *tmp;
+	struct list_head *list, *tmp;
 	drm_vbl_sig_t *vbl_sig;
 	unsigned int vbl_seq = atomic_read( &dev->vbl_received );
 	unsigned long flags;
 
 	spin_lock_irqsave( &dev->vbl_lock, flags );
 
-	list_for_each_safe( ( (struct list_head *) vbl_sig ), tmp, &dev->vbl_sigs.head ) {
+	list_for_each_safe( list, tmp, &dev->vbl_sigs.head ) {
+		vbl_sig = list_entry( list, drm_vbl_sig_t, head );
 		if ( ( vbl_seq - vbl_sig->sequence ) <= (1<<23) ) {
 			vbl_sig->info.si_code = vbl_seq;
 			send_sig_info( vbl_sig->info.si_signo, &vbl_sig->info, vbl_sig->task );
 
-			list_del( (struct list_head *) vbl_sig );
+			list_del( list );
 
 			DRM_FREE( vbl_sig, sizeof(*vbl_sig) );
 
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index 0a4f3aeb..036cee35 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -84,9 +84,6 @@
 #ifndef __HAVE_SG
 #define __HAVE_SG			0
 #endif
-#ifndef __HAVE_KERNEL_CTX_SWITCH
-#define __HAVE_KERNEL_CTX_SWITCH	0
-#endif
 
 #ifndef DRIVER_PREINIT
 #define DRIVER_PREINIT()
@@ -121,9 +118,7 @@ static struct file_operations	DRM(fops) = {	\
 	.release = DRM(release),		\
 	.ioctl	 = DRM(ioctl),			\
 	.mmap	 = DRM(mmap),			\
-	.read	 = DRM(read),			\
 	.fasync  = DRM(fasync),			\
-	.poll	 = DRM(poll),			\
 }
 #endif
 
@@ -167,8 +162,8 @@ static drm_ioctl_desc_t		  DRM(ioctls)[] = {
 	[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_BLOCK)]         = { DRM(noop),        1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)]       = { DRM(noop),        1, 1 },
 	[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)]    = { DRM(authmagic),   1, 1 },
 
 	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)]       = { DRM(addmap),      1, 1 },
@@ -192,7 +187,13 @@ static drm_ioctl_desc_t		  DRM(ioctls)[] = {
 
 	[DRM_IOCTL_NR(DRM_IOCTL_LOCK)]	        = { DRM(lock),        1, 0 },
 	[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)]        = { DRM(unlock),      1, 0 },
+
+#if __HAVE_DMA_FLUSH
+	/* Gamma only, really */
 	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(finish),      1, 0 },
+#else
+	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(noop),      1, 0 },
+#endif
 
 #if __HAVE_DMA
 	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)]      = { DRM(addbufs),     1, 1 },
@@ -475,7 +476,9 @@ static int DRM(takedown)( drm_device_t *dev )
 #if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES
 	if ( dev->queuelist ) {
 		for ( i = 0 ; i < dev->queue_count ; i++ ) {
+#if __HAVE_DMA_WAITLIST
 			DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist );
+#endif
 			if ( dev->queuelist[i] ) {
 				DRM(free)( dev->queuelist[i],
 					  sizeof(*dev->queuelist[0]),
@@ -766,7 +769,7 @@ int DRM(release)( struct inode *inode, struct file *filp )
 	DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
 		   current->pid, (long)dev->device, dev->open_count );
 
-	if ( dev->lock.hw_lock &&
+	if ( priv->lock_count && dev->lock.hw_lock &&
 	     _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
 	     dev->lock.filp == filp ) {
 		DRM_DEBUG( "File %p released, freeing lock for context %d\n",
@@ -784,7 +787,7 @@ int DRM(release)( struct inode *inode, struct file *filp )
                                    server. */
 	}
 #if __HAVE_RELEASE
-	else if ( dev->lock.hw_lock ) {
+	else if ( priv->lock_count && dev->lock.hw_lock ) {
 		/* The lock is required to reclaim buffers */
 		DECLARE_WAITQUEUE( entry, current );
 
@@ -927,11 +930,8 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 #if __HAVE_MULTIPLE_DMA_QUEUES
 	drm_queue_t *q;
 #endif
-#if __HAVE_DMA_HISTOGRAM
-        cycles_t start;
 
-        dev->lck_start = start = get_cycles();
-#endif
+	++priv->lock_count;
 
         if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
 		return -EFAULT;
@@ -1011,19 +1011,10 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 			DRIVER_DMA_QUIESCENT();
 		}
 #endif
-#if __HAVE_KERNEL_CTX_SWITCH
-		if ( dev->last_context != lock.context ) {
-			DRM(context_switch)(dev, dev->last_context,
-					    lock.context);
-		}
-#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;
 }
 
@@ -1046,25 +1037,6 @@ int DRM(unlock)( struct inode *inode, struct file *filp,
 
 	atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
 
-#if __HAVE_KERNEL_CTX_SWITCH
-	/* We no longer really hold it, but if we are the next
-	 * agent to request it then we should just be able to
-	 * take it immediately and not eat the ioctl.
-	 */
-	dev->lock.filp = 0;
-	{
-		__volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
-		unsigned int old, new, prev, ctx;
-
-		ctx = lock.context;
-		do {
-			old  = *plock;
-			new  = ctx;
-			prev = cmpxchg(plock, old, new);
-		} while (prev != old);
-	}
-	wake_up_interruptible(&dev->lock.lock_queue);
-#else
 	DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
 			    DRM_KERNEL_CONTEXT );
 #if __HAVE_DMA_SCHEDULE
@@ -1079,7 +1051,6 @@ int DRM(unlock)( struct inode *inode, struct file *filp,
 			DRM_ERROR( "\n" );
 		}
 	}
-#endif /* !__HAVE_KERNEL_CTX_SWITCH */
 
 	unblock_all_signals();
 	return 0;
diff --git a/linux-core/drm_fops.c b/linux-core/drm_fops.c
index 10d1aed1..3baac693 100644
--- a/linux-core/drm_fops.c
+++ b/linux-core/drm_fops.c
@@ -57,6 +57,7 @@ int DRM(open_helper)(struct inode *inode, struct file *filp, drm_device_t *dev)
 	priv->dev	    = dev;
 	priv->ioctl_count   = 0;
 	priv->authenticated = capable(CAP_SYS_ADMIN);
+	priv->lock_count    = 0;
 
 	down(&dev->struct_sem);
 	if (!dev->file_last) {
@@ -113,97 +114,3 @@ int DRM(fasync)(int fd, struct file *filp, int on)
 }
 
 
-/* The drm_read and drm_write_string code (especially that which manages
-   the circular buffer), is based on Alessandro Rubini's LINUX DEVICE
-   DRIVERS (Cambridge: O'Reilly, 1998), pages 111-113. */
-
-ssize_t DRM(read)(struct file *filp, char *buf, size_t count, loff_t *off)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-	int	      left;
-	int	      avail;
-	int	      send;
-	int	      cur;
-
-	DRM_DEBUG("%p, %p\n", dev->buf_rp, dev->buf_wp);
-
-	while (dev->buf_rp == dev->buf_wp) {
-		DRM_DEBUG("  sleeping\n");
-		if (filp->f_flags & O_NONBLOCK) {
-			return -EAGAIN;
-		}
-		interruptible_sleep_on(&dev->buf_readers);
-		if (signal_pending(current)) {
-			DRM_DEBUG("  interrupted\n");
-			return -ERESTARTSYS;
-		}
-		DRM_DEBUG("  awake\n");
-	}
-
-	left  = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
-	avail = DRM_BSZ - left;
-	send  = DRM_MIN(avail, count);
-
-	while (send) {
-		if (dev->buf_wp > dev->buf_rp) {
-			cur = DRM_MIN(send, dev->buf_wp - dev->buf_rp);
-		} else {
-			cur = DRM_MIN(send, dev->buf_end - dev->buf_rp);
-		}
-		if (copy_to_user(buf, dev->buf_rp, cur))
-			return -EFAULT;
-		dev->buf_rp += cur;
-		if (dev->buf_rp == dev->buf_end) dev->buf_rp = dev->buf;
-		send -= cur;
-	}
-
-	wake_up_interruptible(&dev->buf_writers);
-	return DRM_MIN(avail, count);;
-}
-
-int DRM(write_string)(drm_device_t *dev, const char *s)
-{
-	int left   = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
-	int send   = strlen(s);
-	int count;
-
-	DRM_DEBUG("%d left, %d to send (%p, %p)\n",
-		  left, send, dev->buf_rp, dev->buf_wp);
-
-	if (left == 1 || dev->buf_wp != dev->buf_rp) {
-		DRM_ERROR("Buffer not empty (%d left, wp = %p, rp = %p)\n",
-			  left,
-			  dev->buf_wp,
-			  dev->buf_rp);
-	}
-
-	while (send) {
-		if (dev->buf_wp >= dev->buf_rp) {
-			count = DRM_MIN(send, dev->buf_end - dev->buf_wp);
-			if (count == left) --count; /* Leave a hole */
-		} else {
-			count = DRM_MIN(send, dev->buf_rp - dev->buf_wp - 1);
-		}
-		strncpy(dev->buf_wp, s, count);
-		dev->buf_wp += count;
-		if (dev->buf_wp == dev->buf_end) dev->buf_wp = dev->buf;
-		send -= count;
-	}
-
-	if (dev->buf_async) kill_fasync(&dev->buf_async, SIGIO, POLL_IN);
-
-	DRM_DEBUG("waking\n");
-	wake_up_interruptible(&dev->buf_readers);
-	return 0;
-}
-
-unsigned int DRM(poll)(struct file *filp, struct poll_table_struct *wait)
-{
-	drm_file_t   *priv = filp->private_data;
-	drm_device_t *dev  = priv->dev;
-
-	poll_wait(filp, &dev->buf_readers, wait);
-	if (dev->buf_wp != dev->buf_rp) return POLLIN | POLLRDNORM;
-	return 0;
-}
diff --git a/linux-core/drm_init.c b/linux-core/drm_init.c
index 2d6b6a3c..3aa4ad59 100644
--- a/linux-core/drm_init.c
+++ b/linux-core/drm_init.c
@@ -50,11 +50,6 @@ static void DRM(parse_option)(char *s)
 	for (c = s; *c && *c != ':'; c++); /* find : or \0 */
 	if (*c) r = c + 1; else r = NULL;  /* remember remainder */
 	*c = '\0';			   /* terminate */
-	if (!strcmp(s, "noctx")) {
-		DRM(flags) |= DRM_FLAG_NOCTX;
-		DRM_INFO("Server-mediated context switching OFF\n");
-		return;
-	}
 	if (!strcmp(s, "debug")) {
 		DRM(flags) |= DRM_FLAG_DEBUG;
 		DRM_INFO("Debug messages ON\n");
diff --git a/linux-core/drm_ioctl.c b/linux-core/drm_ioctl.c
index d753cce0..9b1069a1 100644
--- a/linux-core/drm_ioctl.c
+++ b/linux-core/drm_ioctl.c
@@ -205,7 +205,7 @@ int DRM(getmap)( struct inode *inode, struct file *filp,
 	i = 0;
 	list_for_each(list, &dev->maplist->head) {
 		if(i == idx) {
-			r_list = (drm_map_list_t *)list;
+			r_list = list_entry(list, drm_map_list_t, head);
 			break;
 		}
 		i++;
diff --git a/linux-core/drm_lock.c b/linux-core/drm_lock.c
index e9b17cc4..cc9571ed 100644
--- a/linux-core/drm_lock.c
+++ b/linux-core/drm_lock.c
@@ -32,19 +32,13 @@
 #define __NO_VERSION__
 #include "drmP.h"
 
-int DRM(block)(struct inode *inode, struct file *filp, unsigned int cmd,
+int DRM(noop)(struct inode *inode, struct file *filp, unsigned int cmd,
 	       unsigned long arg)
 {
 	DRM_DEBUG("\n");
 	return 0;
 }
 
-int DRM(unblock)(struct inode *inode, struct file *filp, unsigned int cmd,
-		 unsigned long arg)
-{
-	DRM_DEBUG("\n");
-	return 0;
-}
 
 int DRM(lock_take)(__volatile__ unsigned int *lock, unsigned int context)
 {
@@ -109,113 +103,6 @@ int DRM(lock_free)(drm_device_t *dev,
 	return 0;
 }
 
-static int DRM(flush_queue)(drm_device_t *dev, int context)
-{
-	DECLARE_WAITQUEUE(entry, current);
-	int		  ret	= 0;
-	drm_queue_t	  *q	= dev->queuelist[context];
-
-	DRM_DEBUG("\n");
-
-	atomic_inc(&q->use_count);
-	if (atomic_read(&q->use_count) > 1) {
-		atomic_inc(&q->block_write);
-		add_wait_queue(&q->flush_queue, &entry);
-		atomic_inc(&q->block_count);
-		for (;;) {
-			current->state = TASK_INTERRUPTIBLE;
-			if (!DRM_BUFCOUNT(&q->waitlist)) break;
-			schedule();
-			if (signal_pending(current)) {
-				ret = -EINTR; /* Can't restart */
-				break;
-			}
-		}
-		atomic_dec(&q->block_count);
-		current->state = TASK_RUNNING;
-		remove_wait_queue(&q->flush_queue, &entry);
-	}
-	atomic_dec(&q->use_count);
-
-				/* NOTE: block_write is still incremented!
-				   Use drm_flush_unlock_queue to decrement. */
-	return ret;
-}
-
-static int DRM(flush_unblock_queue)(drm_device_t *dev, int context)
-{
-	drm_queue_t	  *q	= dev->queuelist[context];
-
-	DRM_DEBUG("\n");
-
-	atomic_inc(&q->use_count);
-	if (atomic_read(&q->use_count) > 1) {
-		if (atomic_read(&q->block_write)) {
-			atomic_dec(&q->block_write);
-			wake_up_interruptible(&q->write_queue);
-		}
-	}
-	atomic_dec(&q->use_count);
-	return 0;
-}
-
-int DRM(flush_block_and_flush)(drm_device_t *dev, int context,
-			       drm_lock_flags_t flags)
-{
-	int ret = 0;
-	int i;
-
-	DRM_DEBUG("\n");
-
-	if (flags & _DRM_LOCK_FLUSH) {
-		ret = DRM(flush_queue)(dev, DRM_KERNEL_CONTEXT);
-		if (!ret) ret = DRM(flush_queue)(dev, context);
-	}
-	if (flags & _DRM_LOCK_FLUSH_ALL) {
-		for (i = 0; !ret && i < dev->queue_count; i++) {
-			ret = DRM(flush_queue)(dev, i);
-		}
-	}
-	return ret;
-}
-
-int DRM(flush_unblock)(drm_device_t *dev, int context, drm_lock_flags_t flags)
-{
-	int ret = 0;
-	int i;
-
-	DRM_DEBUG("\n");
-
-	if (flags & _DRM_LOCK_FLUSH) {
-		ret = DRM(flush_unblock_queue)(dev, DRM_KERNEL_CONTEXT);
-		if (!ret) ret = DRM(flush_unblock_queue)(dev, context);
-	}
-	if (flags & _DRM_LOCK_FLUSH_ALL) {
-		for (i = 0; !ret && i < dev->queue_count; i++) {
-			ret = DRM(flush_unblock_queue)(dev, i);
-		}
-	}
-
-	return ret;
-}
-
-int DRM(finish)(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;
-	int		  ret	  = 0;
-	drm_lock_t	  lock;
-
-	DRM_DEBUG("\n");
-
-	if (copy_from_user(&lock, (drm_lock_t *)arg, sizeof(lock)))
-		return -EFAULT;
-	ret = DRM(flush_block_and_flush)(dev, lock.context, lock.flags);
-	DRM(flush_unblock)(dev, lock.context, lock.flags);
-	return ret;
-}
-
 /* If we get here, it means that the process has called DRM_IOCTL_LOCK
    without calling DRM_IOCTL_UNLOCK.
 
diff --git a/linux-core/drm_os_linux.h b/linux-core/drm_os_linux.h
index b57efd34..b760c169 100644
--- a/linux-core/drm_os_linux.h
+++ b/linux-core/drm_os_linux.h
@@ -47,9 +47,8 @@
 
 #define DRM_GETSAREA()							 \
 do { 									 \
-	struct list_head *list;						 \
-	list_for_each( list, &dev->maplist->head ) {			 \
-		drm_map_list_t *entry = (drm_map_list_t *)list;		 \
+	drm_map_list_t *entry;						 \
+	list_for_each_entry( entry, &dev->maplist->head, head ) {	 \
 		if ( entry->map &&					 \
 		     entry->map->type == _DRM_SHM &&			 \
 		     (entry->map->flags & _DRM_CONTAINS_LOCK) ) {	 \
@@ -61,28 +60,28 @@ do { 									 \
 
 #define DRM_HZ HZ
 
-#define DRM_WAIT_ON( ret, queue, timeout, condition )	\
-do {							\
-	DECLARE_WAITQUEUE(entry, current);		\
-	unsigned long end = jiffies + (timeout);	\
-	add_wait_queue(&(queue), &entry);		\
-							\
-	for (;;) {					\
-		current->state = TASK_INTERRUPTIBLE;	\
-		if (condition) 				\
-			break;				\
-		if((signed)(end - jiffies) <= 0) {	\
-			ret = -EBUSY;			\
-			break;				\
-		}					\
+#define DRM_WAIT_ON( ret, queue, timeout, condition )		\
+do {								\
+	DECLARE_WAITQUEUE(entry, current);			\
+	unsigned long end = jiffies + (timeout);		\
+	add_wait_queue(&(queue), &entry);			\
+								\
+	for (;;) {						\
+		current->state = TASK_INTERRUPTIBLE;		\
+		if (condition)					\
+			break;					\
+		if((signed)(end - jiffies) <= 0) {		\
+			ret = -EBUSY;				\
+			break;					\
+		}						\
 		schedule_timeout((HZ/100 > 1) ? HZ/100 : 1);	\
-		if (signal_pending(current)) {		\
-			ret = -EINTR;			\
-			break;				\
-		}					\
-	}						\
-	current->state = TASK_RUNNING;			\
-	remove_wait_queue(&(queue), &entry);		\
+		if (signal_pending(current)) {			\
+			ret = -EINTR;				\
+			break;					\
+		}						\
+	}							\
+	current->state = TASK_RUNNING;				\
+	remove_wait_queue(&(queue), &entry);			\
 } while (0)
 
 
diff --git a/linux-core/drm_proc.c b/linux-core/drm_proc.c
index 8524d204..14813722 100644
--- a/linux-core/drm_proc.c
+++ b/linux-core/drm_proc.c
@@ -50,10 +50,6 @@ static int	   DRM(bufs_info)(char *buf, char **start, off_t offset,
 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;
@@ -68,9 +64,6 @@ struct drm_proc_list {
 #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]))
 
@@ -187,7 +180,7 @@ static int DRM(_vm_info)(char *buf, char **start, off_t offset, int request,
 		       "address mtrr\n\n");
 	i = 0;
 	if (dev->maplist != NULL) list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		map = r_list->map;
 		if(!map) continue;
 		if (map->type < 0 || map->type > 4) type = "??";
@@ -491,143 +484,3 @@ static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
 #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
index 9101e136..76a10cf5 100644
--- a/linux-core/drm_vm.c
+++ b/linux-core/drm_vm.c
@@ -74,7 +74,7 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
 	if(!dev->agp || !dev->agp->cant_use_aperture) goto vm_nopage_error;
 
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		map = r_list->map;
 		if (!map) continue;
 		if (map->offset == VM_OFFSET(vma)) break;
@@ -190,7 +190,7 @@ void DRM(vm_shm_close)(struct vm_area_struct *vma)
 		found_maps = 0;
 		list = &dev->maplist->head;
 		list_for_each(list, &dev->maplist->head) {
-			r_list = (drm_map_list_t *) list;
+			r_list = list_entry(list, drm_map_list_t, head);
 			if (r_list->map == map) found_maps++;
 		}
 
@@ -393,7 +393,7 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma)
 	list_for_each(list, &dev->maplist->head) {
 		unsigned long off;
 
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		map = r_list->map;
 		if (!map) continue;
 		off = DRIVER_GET_MAP_OFS();
diff --git a/linux-core/i810_dma.c b/linux-core/i810_dma.c
index de9345e3..a3727164 100644
--- a/linux-core/i810_dma.c
+++ b/linux-core/i810_dma.c
@@ -122,9 +122,7 @@ static struct file_operations i810_buffer_fops = {
 	.release = DRM(release),
 	.ioctl	 = DRM(ioctl),
 	.mmap	 = i810_mmap_buffers,
-	.read	 = DRM(read),
 	.fasync  = DRM(fasync),
-      	.poll	 = DRM(poll),
 };
 
 int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
@@ -263,7 +261,8 @@ static int i810_dma_cleanup(drm_device_t *dev)
 		for (i = 0; i < dma->buf_count; i++) {
 			drm_buf_t *buf = dma->buflist[ i ];
 			drm_i810_buf_priv_t *buf_priv = buf->dev_private;
-			DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
+			if ( buf_priv->kernel_virtual && buf->total )
+				DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
 		}
 	}
    	return 0;
@@ -347,7 +346,7 @@ static int i810_dma_initialize(drm_device_t *dev,
    	memset(dev_priv, 0, sizeof(drm_i810_private_t));
 
 	list_for_each(list, &dev->maplist->head) {
-		drm_map_list_t *r_list = (drm_map_list_t *)list;
+		drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 		if( r_list->map &&
 		    r_list->map->type == _DRM_SHM &&
 		    r_list->map->flags & _DRM_CONTAINS_LOCK ) {
diff --git a/linux-core/i810_drv.c b/linux-core/i810_drv.c
index 439d7887..0bc79386 100644
--- a/linux-core/i810_drv.c
+++ b/linux-core/i810_drv.c
@@ -49,7 +49,6 @@
 #include "drm_init.h"
 #include "drm_ioctl.h"
 #include "drm_lock.h"
-#include "drm_lists.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux-core/i830_dma.c b/linux-core/i830_dma.c
index 47f10d56..df58e990 100644
--- a/linux-core/i830_dma.c
+++ b/linux-core/i830_dma.c
@@ -130,9 +130,7 @@ static struct file_operations i830_buffer_fops = {
 	.release = DRM(release),
 	.ioctl	 = DRM(ioctl),
 	.mmap	 = i830_mmap_buffers,
-	.read	 = DRM(read),
 	.fasync  = DRM(fasync),
-      	.poll	 = DRM(poll),
 };
 
 int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
@@ -280,7 +278,8 @@ static int i830_dma_cleanup(drm_device_t *dev)
 		for (i = 0; i < dma->buf_count; i++) {
 			drm_buf_t *buf = dma->buflist[ i ];
 			drm_i830_buf_priv_t *buf_priv = buf->dev_private;
-			DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
+			if ( buf_priv->kernel_virtual && buf->total )
+				DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
 		}
 	}
    	return 0;
@@ -370,7 +369,7 @@ static int i830_dma_initialize(drm_device_t *dev,
    	memset(dev_priv, 0, sizeof(drm_i830_private_t));
 
 	list_for_each(list, &dev->maplist->head) {
-		drm_map_list_t *r_list = (drm_map_list_t *)list;
+		drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 		if( r_list->map &&
 		    r_list->map->type == _DRM_SHM &&
 		    r_list->map->flags & _DRM_CONTAINS_LOCK ) {
diff --git a/linux-core/i830_drv.c b/linux-core/i830_drv.c
index d9a659a4..0735c94d 100644
--- a/linux-core/i830_drv.c
+++ b/linux-core/i830_drv.c
@@ -51,7 +51,6 @@
 #include "drm_init.h"
 #include "drm_ioctl.h"
 #include "drm_lock.h"
-#include "drm_lists.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux-core/sis_drv.c b/linux-core/sis_drv.c
index 0c917bd4..3dd075d3 100644
--- a/linux-core/sis_drv.c
+++ b/linux-core/sis_drv.c
@@ -41,7 +41,6 @@
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
-#include "drm_lists.h"
 #include "drm_lock.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
diff --git a/linux/Config.in b/linux/Config.in
index 5cc13e84..45bba136 100644
--- a/linux/Config.in
+++ b/linux/Config.in
@@ -5,13 +5,12 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 #
 
-bool 'Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)' CONFIG_DRM
-if [ "$CONFIG_DRM" != "n" ]; then
-    tristate '  3dfx Banshee/Voodoo3+' CONFIG_DRM_TDFX
-    tristate '  3dlabs GMX 2000' CONFIG_DRM_GAMMA
-    tristate '  ATI Rage 128' CONFIG_DRM_R128
-    dep_tristate '  ATI Radeon' CONFIG_DRM_RADEON $CONFIG_AGP
-    dep_tristate '  Intel I810' CONFIG_DRM_I810 $CONFIG_AGP
-    dep_tristate '  Intel 830M' CONFIG_DRM_I830 $CONFIG_AGP
-    dep_tristate '  Matrox g200/g400' CONFIG_DRM_MGA $CONFIG_AGP
-fi
+tristate '  3dfx Banshee/Voodoo3+' CONFIG_DRM_TDFX
+#tristate '  3dlabs GMX 2000' CONFIG_DRM_GAMMA
+tristate '  ATI Rage 128' CONFIG_DRM_R128
+tristate '  ATI Radeon' CONFIG_DRM_RADEON
+dep_tristate '  Intel I810' CONFIG_DRM_I810 $CONFIG_AGP
+dep_tristate '  Intel 830M/845G/852GM/855GM/865G' CONFIG_DRM_I830 $CONFIG_AGP
+dep_tristate '  Matrox g200/g400' CONFIG_DRM_MGA $CONFIG_AGP
+tristate '  SiS' CONFIG_DRM_SIS
+
diff --git a/linux/Makefile.kernel b/linux/Makefile.kernel
index 7e659dfd..5f79e430 100644
--- a/linux/Makefile.kernel
+++ b/linux/Makefile.kernel
@@ -1,19 +1,41 @@
 #
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
-
-O_TARGET	:= drm.o
-list-multi	:= gamma.o tdfx.o r128.o mga.o i810.o i830.o radeon.o ffb.o
+#
+# Based on David Woodhouse's mtd build.
+#
+# $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/Makefile.kernel,v 1.17 2003/04/12 17:18:17 dawes Exp $
+#
 
 gamma-objs  := gamma_drv.o gamma_dma.o
 tdfx-objs   := tdfx_drv.o
-r128-objs   := r128_drv.o r128_cce.o r128_irq.o r128_state.o
-mga-objs    := mga_drv.o mga_dma.o mga_irq.o mga_state.o mga_warp.o
+r128-objs   := r128_drv.o r128_cce.o r128_state.o r128_irq.o
+mga-objs    := mga_drv.o mga_dma.o mga_state.o mga_warp.o mga_irq.o 
 i810-objs   := i810_drv.o i810_dma.o
 i830-objs   := i830_drv.o i830_dma.o i830_irq.o
-radeon-objs := radeon_drv.o radeon_cp.o radeon_irq.o radeon_mem.o radeon_state.o
+radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o
+sis-objs    := sis_drv.o sis_ds.o sis_mm.o
 ffb-objs    := ffb_drv.o ffb_context.o
 
+# Kernel version checks
+
+BELOW25 := $(shell if [ $(PATCHLEVEL) -lt 5 ]; then echo y; fi)
+
+# There were major build changes starting with 2.5.52
+ifneq ($(BELOW25),y)
+BELOW2552 := $(shell if [ $(SUBLEVEL) -lt 52 ]; then echo y; fi)
+else
+BELOW2552 := y
+endif
+
+ifeq ($(BELOW25),y)
+O_TARGET	:= drm.o
+list-multi	:= gamma.o tdfx.o r128.o mga.o i810.o i830.o ffb.o radeon.o
+obj-m		:=
+obj-n		:=
+obj-		:=
+endif
+
 obj-$(CONFIG_DRM_GAMMA) += gamma.o
 obj-$(CONFIG_DRM_TDFX)	+= tdfx.o
 obj-$(CONFIG_DRM_R128)	+= r128.o
@@ -21,10 +43,14 @@ obj-$(CONFIG_DRM_RADEON)+= radeon.o
 obj-$(CONFIG_DRM_MGA)	+= mga.o
 obj-$(CONFIG_DRM_I810)	+= i810.o
 obj-$(CONFIG_DRM_I830)	+= i830.o
+obj-$(CONFIG_DRM_SIS)   += sis.o
 obj-$(CONFIG_DRM_FFB)   += ffb.o
 
+ifeq ($(BELOW2552),y)
 include $(TOPDIR)/Rules.make
+endif
 
+ifeq ($(BELOW25),y)
 gamma.o: $(gamma-objs) $(lib)
 	$(LD) -r -o $@ $(gamma-objs) $(lib)
 
@@ -46,5 +72,10 @@ r128.o: $(r128-objs) $(lib)
 radeon.o: $(radeon-objs) $(lib)
 	$(LD) -r -o $@ $(radeon-objs) $(lib)
 
+sis.o: $(sis-objs) $(lib)
+	$(LD) -r -o $@ $(sis-objs) $(lib)
+
 ffb.o: $(ffb-objs) $(lib)
 	$(LD) -r -o $@ $(ffb-objs) $(lib)
+endif
+
diff --git a/linux/Makefile.linux b/linux/Makefile.linux
index 065d6f62..b5085919 100644
--- a/linux/Makefile.linux
+++ b/linux/Makefile.linux
@@ -1,308 +1,316 @@
 # Makefile -- For the Direct Rendering Manager module (drm)
-# Created: Mon Jan  4 09:26:53 1999 by faith@precisioninsight.com
 #
-# Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
-# Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
-# All rights reserved.
+# Based on David Woodhouse's mtd build.
 #
-# 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:
+# Modified to handle the DRM requirements and builds on a wider range of
+# platforms in a flexible way by David Dawes.  It's not clear, however,
+# that this approach is simpler than the old one.
 #
-# 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 purpose of this Makefile.linux file is to handle setting up everything
+# needed for an out-of-kernel source build.  Makefile.kernel contains
+# everything required for in-kernel source builds.  It is included into
+# this file, so none of that should be duplicated here.
 #
-# 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.
+# $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/Makefile.linux,v 1.34 2003/04/16 15:42:19 dawes Exp $
 #
+
+#
+# By default, the build is done against the running linux kernel source.
+# To build against a different kernel source tree, set LINUXDIR:
+#
+#    make -f Makefile.linux LINUXDIR=/path/to/kernel/source
+
 #
-# ***** NOTE NOTE NOTE NOTE NOTE *****
-# To override the automatic Linux source tree determination, pass the
-# pathname for the kernel that you want to compile on the command line,
-# like this:
-# 	make TREE=/usr/my-kernel-tree/include
+# To build only some modules, either set DRM_MODULES to the list of modules,
+# or specify the modules as targets:
+#
+#    make -f Makefile.linux r128.o radeon.o
+#
+# or:
+#
+#    make -f Makefile.linux DRM_MODULES="r128 radeon"
 #
 
 SHELL=/bin/sh
 
 .SUFFIXES:
 
-# *** Setup
+ifndef LINUXDIR
+RUNNING_REL := $(shell uname -r)
+
+LINUXDIR := /lib/modules/$(RUNNING_REL)/build
+endif
+
+MACHINE := $(shell uname -m)
 
-# **** End of SMP/MODVERSIONS detection
+# Modules for all architectures
+MODULE_LIST := gamma.o tdfx.o r128.o radeon.o mga.o #sis.o
+
+# Modules only for ix86 architectures
+ifneq (,$(findstring 86,$(MACHINE)))
+MODULE_LIST += i830.o i810.o
+endif
 
-MODS =		gamma.o tdfx.o r128.o radeon.o
-LIBS =
+# Add ffb.o for sparc??
 
-DRMTEMPLATES =	drm_auth.h drm_bufs.h drm_context.h drm_dma.h drm_drawable.h \
-		drm_drv.h drm_fops.h drm_init.h drm_ioctl.h drm_lists.h \
-		drm_lock.h drm_memory.h drm_proc.h drm_stub.h drm_vm.h
-DRMSHARED =	drm_sarea.h
-DRMHEADERS =	drm.h drmP.h $(DRMSHARED)
+DRM_MODULES ?= $(MODULE_LIST)
 
-GAMMAOBJS =	gamma_drv.o gamma_dma.o
-GAMMAHEADERS =	gamma_drv.h $(DRMHEADERS) $(DRMTEMPLATES)
+# These definitions are for handling dependencies in the out of kernel build.
 
-TDFXOBJS =	tdfx_drv.o
-TDFXHEADERS =	tdfx.h $(DRMHEADERS) $(DRMTEMPLATES)
+DRMTEMPLATES =  drm_auth.h drm_bufs.h drm_context.h drm_dma.h drm_drawable.h \
+                drm_drv.h drm_fops.h drm_init.h drm_ioctl.h \
+                drm_lock.h drm_memory.h drm_proc.h drm_stub.h drm_vm.h
 
-R128OBJS =	r128_drv.o r128_cce.o r128_state.o r128_irq.o
-R128HEADERS =	r128.h r128_drv.h r128_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
-R128SHARED =	r128.h r128_drv.h r128_drm.h r128_cce.c r128_state.c r128_irq.c
+DRMSHARED =     drm_sarea.h
+DRMHEADERS =    drm.h drmP.h $(DRMSHARED)
 
-RADEONOBJS =	radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o \
-		radeon_irq.o
-RADEONHEADERS =	radeon.h radeon_drv.h radeon_drm.h $(DRMHEADERS) \
+GAMMAHEADERS =  gamma.h gamma_context.h gamma_drm.h gamma_drv.h gamma_lists.h gamma_old_dma.h gamma_lock.h $(DRMHEADERS) $(DRMTEMPLATES)
+TDFXHEADERS =   tdfx.h $(DRMHEADERS) $(DRMTEMPLATES)
+R128HEADERS =   r128.h r128_drv.h r128_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
+R128SHARED =    r128.h r128_drv.h r128_drm.h r128_cce.c r128_state.c r128_irq.c
+RADEONHEADERS = radeon.h radeon_drv.h radeon_drm.h $(DRMHEADERS) \
+                $(DRMTEMPLATES)
+RADEONSHARED =  radeon.h radeon_drv.h radeon_drm.h radeon_cp.c radeon_irq.c \
+                radeon_mem.c radeon_state.c
+MGAHEADERS =    mga.h mga_drv.h mga_drm.h mga_ucode.h $(DRMHEADERS) \
 		$(DRMTEMPLATES)
-RADEONSHARED =	radeon.h radeon_drv.h radeon_drm.h radeon_cp.c radeon_irq.c \
-		radeon_mem.c radeon_state.c
-
-INC =		/usr/include
-
-CFLAGS =	-O2 $(WARNINGS)
-WARNINGS =	-Wall -Wwrite-strings -Wpointer-arith -Wcast-align \
-		-Wstrict-prototypes -Wnested-externs \
-		-Wpointer-arith
-# -Wshadow -Winline -- make output too noisy
-MODCFLAGS =	$(CFLAGS) -D__KERNEL__ -DMODULE -fomit-frame-pointer -fno-strict-aliasing
-PRGCFLAGS =	$(CFLAGS) -g -ansi -pedantic -DPOSIX_C_SOURCE=199309L \
-		-D_POSIX_SOURCE -D_XOPEN_SOURCE -D_BSD_SOURCE -D_SVID_SOURCE \
-		-I../../../../../../include -I../../../../../../../../include \
-		-I../../../../../../../../programs/Xserver/hw/xfree86/common \
-		-I. -I../../.. -I../../../../../../../../lib/X11
-PRGLIBS =
-
-# **** Start of SMP/MODVERSIONS detection
-
-# First, locate correct tree for this kernel version.  If we find a
-# matching tree, we assume that we can rely on that tree's autoconf.h.
-# This may not be correct, but it is the best assumption we can make.
-
-VERSION := $(shell uname -r)
-# For Red Hat...
-RHVERS := $(shell uname -r)custom
-
-A := /lib/modules/$(VERSION)/build/include
-B := /usr/src/linux-$(VERSION)/include
-C := /usr/src/linux/include
-D := /usr/include
-
-V := $(shell gcc -E -nostdinc -I$A picker.c 2>/dev/null \
-      | grep -s 'RELEASE = ' | cut -d' ' -f3)
-ifeq ($(V),"$(VERSION)")
-TREE := $A
-else
-ifeq ($(V),"$(RHVERS)")
-  TREE := $A
-else
-  V := $(shell gcc -E -nostdinc -I$B picker.c 2>/dev/null \
-        | grep -s 'RELEASE = ' | cut -d' ' -f3)
-ifeq ($(V),"$(VERSION)")
-    TREE := $B
-else
-ifeq ($(V),"$(RHVERS)")
-      TREE := $B
-else
-      V := $(shell gcc -E -nostdinc -I$C picker.c 2>/dev/null \
-          | grep -s 'RELEASE = ' | cut -d' ' -f3)
-ifeq ($(V),"$(VERSION)")
-        TREE := $C
-else
-        V := $(shell gcc -E -nostdinc -I$D picker.c 2>/dev/null \
-          | grep -s 'RELEASE = ' | cut -d' ' -f3)
-ifeq ($(V),"$(VERSION)")
-          TREE := $D
-else
-          TREE := 0
-endif
+MGASHARED =     mga.h mga_dma.c mga_drm.h mga_drv.h mga_irq.c mga_state.c \
+                mga_ucode.h mga_warp.c
+I810HEADERS =   i810.h i810_drv.h i810_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
+I830HEADERS =   i830.h i830_drv.h i830_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
+SISHEADERS=     sis_drv.h sis_drm.h $(DRMHEADERS)
+
+SHAREDSRC = $(DRMSHARED) $(MGASHARED) $(R128SHARED) $(RADEONSHARED)
+
+CLEANFILES = *.o *.ko $(PROGS) .depend .*.flags .*.d .*.cmd
+
+# VERSION is not defined from the initial invocation.  It is defined when
+# this Makefile is invoked from the kernel's root Makefile.
+
+ifndef VERSION
+
+ifdef RUNNING_REL
+
+# SuSE has the version.h and autoconf.h headers for the current kernel
+# in /boot as /boot/vmlinuz.version.h and /boot/vmlinuz.autoconf.h.
+# Check these first to see if they match the running kernel.
+
+BOOTVERSION_PREFIX = /boot/vmlinuz.
+
+V := $(shell if [ -f $(BOOTVERSION_PREFIX)version.h ]; then \
+	grep UTS_RELEASE $(BOOTVERSION_PREFIX)version.h | \
+	cut -d' ' -f3; fi)
+
+ifeq ($(V),"$(RUNNING_REL)")
+HEADERFROMBOOT := 1
+GETCONFIG := MAKEFILES=$(shell pwd)/.config
+HAVECONFIG := y
 endif
+
+# On Red Hat we need to check if there is a .config file in the kernel
+# source directory.  If there isn't, we need to check if there's a
+# matching file in the configs subdirectory.
+
+ifneq ($(HAVECONFIG),y)
+HAVECONFIG := $(shell if [ -e $(LINUXDIR)/.config ]; then echo y; fi)
 endif
+
+ifneq ($(HAVECONFIG),y)
+REL_BASE := $(shell echo $(RUNNING_REL) | sed 's/-.*//')
+REL_TYPE := $(shell echo $(RUNNING_REL) | sed 's/[0-9.-]//g')
+ifeq ($(REL_TYPE),)
+RHCONFIG := configs/kernel-$(REL_BASE)-$(MACHINE).config
+else
+RHCONFIG := configs/kernel-$(REL_BASE)-$(MACHINE)-$(REL_TYPE).config
 endif
+HAVECONFIG := $(shell if [ -e $(LINUXDIR)/$(RHCONFIG) ]; then echo y; fi)
+ifneq ($(HAVECONFIG),y)
+RHCONFIG :=
 endif
 endif
 
-ifeq ($(TREE),0)
-all:; @echo Error: Could not locate kernel tree in $A $B $C $D
-else
-SMP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
-	| grep -s 'SMP = ' | cut -d' ' -f3)
-MODULES := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
-	| grep -s 'MODULES = ' | cut -d' ' -f3)
-MODVERSIONS := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
-	| grep -s 'MODVERSIONS = ' | cut -d' ' -f3)
-AGP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
-	| grep -s 'AGP = ' | cut -d' ' -f3)
-MACHINE := $(shell echo `uname -m`)
-# Red Hat's kernels have 4 args to do_munmap()
-DOMUNMAP := $(shell grep do_munmap $(TREE)/linux/mm.h | grep -c acct)
-ifeq ($(AGP),0)
-AGP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
-	| grep -s 'AGP_MODULE = ' | cut -d' ' -f3)
+ifneq ($(HAVECONFIG),y)
+$(error Cannot find a kernel config file)
 endif
 
-ifeq ($(DOMUNMAP),1)
-MODCFLAGS += -DDO_MUNMAP_4_ARGS
 endif
-ifeq ($(AGP),1)
-MODCFLAGS += -DCONFIG_AGP -DCONFIG_AGP_MODULE
-DRMTEMPLATES += drm_agpsupport.h
-MODS += mga.o
-ifeq ($(MACHINE),i386)
-MODS += i810.o
-MODS += i830.o
-endif
-ifeq ($(MACHINE),i686)
-MODS += i810.o
-MODS += i830.o
+
+CLEANCONFIG := $(shell if cmp -s $(LINUXDIR)/.config .config; then echo y; fi)
+ifeq ($(CLEANCONFIG),y)
+CLEANFILES += $(LINUXDIR)/.config .config $(LINUXDIR)/tmp_include_depends
 endif
 
-MGAOBJS =	mga_drv.o mga_dma.o mga_state.o mga_warp.o mga_irq.o
-MGAHEADERS =	mga.h mga_drv.h mga_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
-MGASHARED =	mga.h mga_dma.c mga_drm.h mga_drv.h mga_state.c \
-		mga_ucode.h mga_warp.c
+# The Makefile renaming hack is required because the standard kernel build,
+# especially 2.5.52 and later, explicitly references the Makefile by the
+# name "Makefile".  For builds prior to 2.5.52, the name GNUmakefile could
+# have been used.
 
-I810OBJS =	i810_drv.o i810_dma.o
-I810HEADERS =	i810.h i810_drv.h i810_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
+all: modules
 
-I830OBJS =	i830_drv.o i830_dma.o i830_irq.o
-I830HEADERS =	i830.h i830_drv.h i830_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
+modules: includes
+	@if test -f Makefile && cmp -s Makefile Makefile.linux; then : ; \
+	  else \
+		if [ -e Makefile ]; then \
+			(set -x; mv -f Makefile Makefile._xx_); fi; \
+		(set -x; ln -s Makefile.linux Makefile); fi
+	make -C $(LINUXDIR) $(GETCONFIG) SUBDIRS=`pwd` DRMSRCDIR=`pwd` modules
+	@if cmp -s Makefile Makefile.linux; then \
+		(set -x; rm -f Makefile); \
+		if [ -e Makefile._xx_ ]; then \
+			(set -x; mv -f Makefile._xx_ Makefile); fi; fi
 
-endif
+ifeq ($(HEADERFROMBOOT),1)
 
-ifeq ($(MACHINE),alpha)
-MODCFLAGS+=      -ffixed-8 -mno-fp-regs -mcpu=ev56 -Wa,-mev6 
-endif
-ifeq ($(MACHINE),x86_64)
-MODCFLAGS+=      -mcmodel=kernel
-endif
+BOOTHEADERS = version.h autoconf.h
+BOOTCONFIG = .config
 
+CLEANFILES += $(BOOTHEADERS) $(BOOTCONFIG)
 
-MODS += sis.o
+includes:: $(BOOTHEADERS) $(BOOTCONFIG)
 
-SISOBJS=	sis_drv.o sis_mm.o sis_ds.o 
-SISHEADERS=	sis_drv.h sis_drm.h $(DRMHEADERS)
-MODCFLAGS += -DCONFIG_DRM_SIS
+version.h: $(BOOTVERSION_PREFIX)version.h
+	rm -f $@
+	ln -s $< $@
 
-all::;@echo === KERNEL HEADERS IN $(TREE)
-all::;@echo === SMP=${SMP} MODULES=${MODULES} MODVERSIONS=${MODVERSIONS} AGP=${AGP}
-all::;@echo === Compiling for machine $(MACHINE)
-all::;@echo === WARNING
-all::;@echo === WARNING Use 2.4.x kernels ONLY !
-all::;@echo === WARNING
+autoconf.h: $(BOOTVERSION_PREFIX)autoconf.h
+	rm -f $@
+	ln -s $< $@
 
-ifeq ($(MODULES),0)
-all::;@echo
-all::;@echo "*** Kernel modules must be configured.  Build aborted."
-all::;@echo
-else
-all:: $(LIBS) $(MODS) $(PROGS)
+.config: $(BOOTVERSION_PREFIX)config
+	rm -f $@
+	ln -s $< $@
 endif
 
-endif
+# This prepares an unused Red Hat kernel tree for the build.
+ifneq ($(RHCONFIG),)
+includes:: $(LINUXDIR)/.config $(LINUXDIR)/tmp_include_depends .config
 
-# **** End of SMP/MODVERSIONS detection
+$(LINUXDIR)/.config: $(LINUXDIR)/$(RHCONFIG)
+	rm -f $@
+	ln -s $< $@
 
-# **** Handle SMP/MODVERSIONS
-ifeq ($(SMP),1)
-MODCFLAGS += -D__SMP__
-endif
-ifeq ($(MODVERSIONS),1)
-MODCFLAGS += -DMODVERSIONS -include $(TREE)/linux/modversions.h
+.config: $(LINUXDIR)/$(RHCONFIG)
+	rm -f $@
+	ln -s $< $@
+
+$(LINUXDIR)/tmp_include_depends:
+	echo all: > $@
 endif
 
-# **** End of configuration
+# Make sure that the shared source files are linked into this directory.
 
-# Link in shared headers if needed
 
-SHAREDSRC = $(DRMSHARED) $(MGASHARED) $(R128SHARED) $(RADEONSHARED)
-SHAREDDIR = ../../../shared/drm/kernel
+SHAREDDIR := ../../../shared/drm/kernel
+
+HASSHARED := $(shell if [ -d $(SHAREDDIR) ]; then echo y; fi)
+
+ifeq ($(HASSHARED),y)
+includes:: $(SHAREDSRC)
 
 $(SHAREDSRC):
-	@if [ ! -r $@ ]; then (rm -f $@; set -x; ln -s $(SHAREDDIR)/$@ .); fi
+	@if [ -r $(SHAREDDIR)/$@ ]; then \
+		(rm -f $@; set -x; ln -s $(SHAREDDIR)/$@ $@); fi
+
+CLEANFILES += $(SHAREDSRC)
+endif
 
+includes:: linux
 
-dristat: dristat.c
-	$(CC) $(PRGCFLAGS) $< -o $@
+linux:
+	rm -f linux
+	ln -s . linux
 
-DRIsetup: DRIsetup.c
-	$(CC) $(PRGCFLAGS) $< -o $@ -L/usr/X11R6/lib -lGL -lm ../../../../parser/libxf86config.a ../libdrm.a
+clean cleandir:
+	rm -f $(CLEANFILES)
 
-gamma_drv.o: gamma_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-gamma.o: $(GAMMAOBJS)
-	$(LD) -r $^ -o $@
+$(MODULE_LIST)::
+	make -f Makefile.linux DRM_MODULES=$@ modules
 
-tdfx_drv.o: tdfx_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-tdfx.o: $(TDFXOBJS) $(LIBS)
-	$(LD) -r $^ -o $@
+else
+
+# Check for kernel versions that we don't support.
 
-sis.o: $(SISOBJS) $(LIBS)
-	$(LD) -r $^ -o $@
+BELOW24 := $(shell if [ $(VERSION) -lt 2 -o $(PATCHLEVEL) -lt 4 ]; then \
+		echo y; fi)
 
-r128_drv.o: r128_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-r128.o: $(R128OBJS) $(LIBS)
-	$(LD) -r $^ -o $@
+ifeq ($(BELOW24),y)
+$(error Only 2.4.x and later kernels are supported \
+	($(VERSION).$(PATCHLEVEL).$(SUBLEVEL)))
+endif
 
-radeon_drv.o: radeon_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-radeon.o: $(RADEONOBJS) $(LIBS)
-	$(LD) -r $^ -o $@
+# This needs to go before all other include paths.
+CC += -I$(DRMSRCDIR)
 
-ifeq ($(AGP),1)
-mga_drv.o: mga_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-mga.o: $(MGAOBJS)
-	$(LD) -r $^ -o $@
+# Check for Red Hat's 4-argument do_munmap().
+DOMUNMAP := $(shell grep do_munmap $(LINUXDIR)/include/linux/mm.h | \
+                grep -c acct)
+# Check for 5-argument remap_page_range() in RH9 kernel, and 2.5.x kernels
+RPR := $(shell grep remap_page_range $(LINUXDIR)/include/linux/mm.h | \
+		grep -c vma)
 
-i810_drv.o: i810_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-i810.o: $(I810OBJS) $(LIBS)
-	$(LD) -r $^ -o $@
+ifneq ($(DOMUNMAP),0)
+EXTRA_CFLAGS += -DDO_MUNMAP_4_ARGS
+endif
 
-i830_drv.o: i830_drv.c
-	$(CC) $(MODCFLAGS) -DEXPORT_SYMTAB -I$(TREE) -c $< -o $@
-i830.o: $(I830OBJS) $(LIBS)
-	$(LD) -r $^ -o $@
+ifneq ($(RPR),0)
+EXTRA_CFLAGS += -DREMAP_PAGE_RANGE_5_ARGS
+endif
 
+# Start with all modules turned off.
+CONFIG_DRM_GAMMA := n
+CONFIG_DRM_TDFX := n
+CONFIG_DRM_MGA := n
+CONFIG_DRM_I810 := n
+CONFIG_DRM_R128 := n
+CONFIG_DRM_RADEON := n
+CONFIG_DRM_I830 := n
+CONFIG_DRM_SIS := n
+CONFIG_DRM_FFB := n
+
+# Enable module builds for the modules requested/supported.
+
+ifneq (,$(findstring gamma,$(DRM_MODULES)))
+CONFIG_DRM_GAMMA := m
+endif
+ifneq (,$(findstring tdfx,$(DRM_MODULES)))
+CONFIG_DRM_TDFX := m
+endif
+ifneq (,$(findstring r128,$(DRM_MODULES)))
+CONFIG_DRM_R128 := m
+endif
+ifneq (,$(findstring radeon,$(DRM_MODULES)))
+CONFIG_DRM_RADEON := m
 endif
+ifneq (,$(findstring sis,$(DRM_MODULES)))
+CONFIG_DRM_SIS := m
+endif
+
+# These require AGP support
 
-.PHONY: ChangeLog
-ChangeLog:
-	@rm -f Changelog
-	@rcs2log -i 2 -r -l \
-		| sed 's,@.*light,,' \
-		| sed 's,/cvsroot/.*/drm/kernel/,,g' \
-		> ChangeLog
-
-
-# .o files are used for modules
-%.o: %.c
-	$(CC) $(MODCFLAGS) -I$(TREE) -c $< -o $@
-
-$(GAMMAOBJS): $(GAMMAHEADERS)
-$(TDFXOBJS): $(TDFXHEADERS)
-$(R128OBJS): $(R128HEADERS)
-$(RADEONOBJS): $(RADEONHEADERS)
-ifeq ($(AGP),1)
-$(MGAOBJS): $(MGAHEADERS)
-$(I810OBJS): $(I810HEADERS)
-$(I830OBJS): $(I830HEADERS)
+ifdef CONFIG_AGP
+ifneq (,$(findstring mga,$(DRM_MODULES)))
+CONFIG_DRM_MGA := m
+endif
+ifneq (,$(findstring i810,$(DRM_MODULES)))
+CONFIG_DRM_I810 := m
+endif
+ifneq (,$(findstring i830,$(DRM_MODULES)))
+CONFIG_DRM_I830 := m
 endif
+endif
+
+include $(DRMSRCDIR)/Makefile.kernel
 
-clean cleandir::
-	rm -f *.o *.a *~ core
-	@for i in $(SHAREDSRC); do \
-		if [ -L $$i ]; then (set -x; rm -f $$i); fi; \
-	done
+# Depencencies
+$(gamma-objs):	$(GAMMAHEADERS)
+$(tdfx-objs):	$(TDFXHEADERS)
+$(r128-objs):	$(R128HEADERS)
+$(mga-objs):	$(MGAHEADERS)
+$(i810-objs):	$(I810HEADERS)
+$(i830-objs):	$(I830HEADERS)
+$(radeon-objs):	$(RADEONHEADERS)
+$(sis-objs):	$(SISHEADERS)
+$(ffb-objs):	$(FFBHEADERS)
+
+endif
 
diff --git a/linux/drmP.h b/linux/drmP.h
index a6b32285..2cdc5f09 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -67,7 +67,16 @@
 #include <linux/types.h>
 #include <linux/agp_backend.h>
 #endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,41)
+#define HAS_WORKQUEUE 0
+#else
+#define HAS_WORKQUEUE 1
+#endif
+#if !HAS_WORKQUEUE
 #include <linux/tqueue.h>
+#else
+#include <linux/workqueue.h>
+#endif
 #include <linux/poll.h>
 #include <asm/pgalloc.h>
 #include "drm.h"
@@ -97,9 +106,6 @@
 #ifndef __HAVE_DMA_FREELIST
 #define __HAVE_DMA_FREELIST	0
 #endif
-#ifndef __HAVE_DMA_HISTOGRAM
-#define __HAVE_DMA_HISTOGRAM	0
-#endif
 
 #define __REALLY_HAVE_AGP	(__HAVE_AGP && (defined(CONFIG_AGP) || \
 						defined(CONFIG_AGP_MODULE)))
@@ -121,7 +127,6 @@
 #define DRM_LOCK_SLICE	      1	/* Time slice for lock, in jiffies	  */
 
 #define DRM_FLAG_DEBUG	  0x01
-#define DRM_FLAG_NOCTX	  0x02
 
 #define DRM_MEM_DMA	   0
 #define DRM_MEM_SAREA	   1
@@ -172,6 +177,15 @@
 		pos = n, n = pos->next)
 #endif
 
+#ifndef list_for_each_entry
+#define list_for_each_entry(pos, head, member)				\
+       for (pos = list_entry((head)->next, typeof(*pos), member),	\
+                    prefetch(pos->member.next);				\
+            &pos->member != (head);					\
+            pos = list_entry(pos->member.next, typeof(*pos), member),	\
+                    prefetch(pos->member.next))
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
 static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 {
@@ -197,7 +211,7 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+#ifndef REMAP_PAGE_RANGE_5_ARGS
 #define DRM_RPR_ARG(vma)
 #else
 #define DRM_RPR_ARG(vma) vma,
@@ -249,17 +263,17 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 			DRM(ioremapfree)( (map)->handle, (map)->size );	\
 	} while (0)
 
-#define DRM_FIND_MAP(_map, _o)						\
-do {									\
-	struct list_head *_list;					\
-	list_for_each( _list, &dev->maplist->head ) {			\
-		drm_map_list_t *_entry = (drm_map_list_t *)_list;	\
-		if ( _entry->map &&					\
-		     _entry->map->offset == (_o) ) {			\
-			(_map) = _entry->map;				\
-			break;						\
- 		}							\
-	}								\
+#define DRM_FIND_MAP(_map, _o)								\
+do {											\
+	struct list_head *_list;							\
+	list_for_each( _list, &dev->maplist->head ) {					\
+		drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );	\
+		if ( _entry->map &&							\
+		     _entry->map->offset == (_o) ) {					\
+			(_map) = _entry->map;						\
+			break;								\
+ 		}									\
+	}										\
 } while(0)
 #define DRM_DROP_MAP(_map)
 
@@ -347,38 +361,11 @@ typedef struct drm_buf {
 		DRM_LIST_RECLAIM = 5
 	}		  list;	       /* Which list we're on		     */
 
-#if DRM_DMA_HISTOGRAM
-	cycles_t	  time_queued;	   /* Queued to kernel DMA queue     */
-	cycles_t	  time_dispatched; /* Dispatched to hardware	     */
-	cycles_t	  time_completed;  /* Completed by hardware	     */
-	cycles_t	  time_freed;	   /* Back on freelist		     */
-#endif
 
 	int		  dev_priv_size; /* Size of buffer private stoarge   */
 	void		  *dev_private;  /* Per-buffer private storage       */
 } drm_buf_t;
 
-#if DRM_DMA_HISTOGRAM
-#define DRM_DMA_HISTOGRAM_SLOTS		  9
-#define DRM_DMA_HISTOGRAM_INITIAL	 10
-#define DRM_DMA_HISTOGRAM_NEXT(current)	 ((current)*10)
-typedef struct drm_histogram {
-	atomic_t	  total;
-
-	atomic_t	  queued_to_dispatched[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  dispatched_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  completed_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
-
-	atomic_t	  queued_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  queued_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
-
-	atomic_t	  dma[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  schedule[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  ctx[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  lacq[DRM_DMA_HISTOGRAM_SLOTS];
-	atomic_t	  lhld[DRM_DMA_HISTOGRAM_SLOTS];
-} drm_histogram_t;
-#endif
 
 				/* bufs is one longer than it has to be */
 typedef struct drm_waitlist {
@@ -430,6 +417,7 @@ typedef struct drm_file {
 	struct drm_file	  *prev;
 	struct drm_device *dev;
 	int 		  remove_auth_on_close;
+	unsigned long     lock_count;
 } drm_file_t;
 
 
@@ -606,7 +594,11 @@ typedef struct drm_device {
 	int		  last_checked;	/* Last context checked for DMA	   */
 	int		  last_context;	/* Last current context		   */
 	unsigned long	  last_switch;	/* jiffies at last context switch  */
+#if !HAS_WORKQUEUE
 	struct tq_struct  tq;
+#else
+	struct work_struct	work;
+#endif
 #if __HAVE_VBL_IRQ
    	wait_queue_head_t vbl_queue;
    	atomic_t          vbl_received;
@@ -616,9 +608,6 @@ typedef struct drm_device {
 #endif
 	cycles_t	  ctx_start;
 	cycles_t	  lck_start;
-#if __HAVE_DMA_HISTOGRAM
-	drm_histogram_t	  histo;
-#endif
 
 				/* Callback to X server for context switch
 				   and for heavy-handed reset. */
@@ -674,13 +663,7 @@ extern int           DRM(unlock)(struct inode *inode, struct file *filp,
 extern int	     DRM(open_helper)(struct inode *inode, struct file *filp,
 				      drm_device_t *dev);
 extern int	     DRM(flush)(struct file *filp);
-extern int	     DRM(release_fuck)(struct inode *inode, struct file *filp);
 extern int	     DRM(fasync)(int fd, struct file *filp, int on);
-extern ssize_t	     DRM(read)(struct file *filp, char *buf, size_t count,
-			       loff_t *off);
-extern int	     DRM(write_string)(drm_device_t *dev, const char *s);
-extern unsigned int  DRM(poll)(struct file *filp,
-			       struct poll_table_struct *wait);
 
 				/* Mapping support (drm_vm.h) */
 extern struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
@@ -785,12 +768,11 @@ extern int	     DRM(getmagic)(struct inode *inode, struct file *filp,
 extern int	     DRM(authmagic)(struct inode *inode, struct file *filp,
 				    unsigned int cmd, unsigned long arg);
 
+                                /* Placeholder for ioctls past */
+extern int	     DRM(noop)(struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg);
 
 				/* Locking IOCTL support (drm_lock.h) */
-extern int	     DRM(block)(struct inode *inode, struct file *filp,
-				unsigned int cmd, unsigned long arg);
-extern int	     DRM(unblock)(struct inode *inode, struct file *filp,
-				  unsigned int cmd, unsigned long arg);
 extern int	     DRM(lock_take)(__volatile__ unsigned int *lock,
 				    unsigned int context);
 extern int	     DRM(lock_transfer)(drm_device_t *dev,
@@ -830,15 +812,6 @@ extern int	     DRM(dma_setup)(drm_device_t *dev);
 extern void	     DRM(dma_takedown)(drm_device_t *dev);
 extern void	     DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf);
 extern void	     DRM(reclaim_buffers)( struct file *filp );
-#if __HAVE_OLD_DMA
-/* GH: This is a dirty hack for now...
- */
-extern void	     DRM(clear_next_buffer)(drm_device_t *dev);
-extern int	     DRM(select_queue)(drm_device_t *dev,
-				       void (*wrapper)(unsigned long));
-extern int	     DRM(dma_enqueue)(struct file *filp, drm_dma_t *dma);
-extern int	     DRM(dma_get_buffers)(struct file *filp, drm_dma_t *dma);
-#endif
 #if __HAVE_DMA_IRQ
 extern int           DRM(control)( struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg );
@@ -859,25 +832,7 @@ extern void          DRM(vbl_send_signals)( drm_device_t *dev );
 extern void          DRM(dma_immediate_bh)( void *dev );
 #endif
 #endif
-#if DRM_DMA_HISTOGRAM
-extern int	     DRM(histogram_slot)(unsigned long count);
-extern void	     DRM(histogram_compute)(drm_device_t *dev, drm_buf_t *buf);
-#endif
 
-				/* Buffer list support (drm_lists.h) */
-#if __HAVE_DMA_WAITLIST
-extern int	     DRM(waitlist_create)(drm_waitlist_t *bl, int count);
-extern int	     DRM(waitlist_destroy)(drm_waitlist_t *bl);
-extern int	     DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf);
-extern drm_buf_t     *DRM(waitlist_get)(drm_waitlist_t *bl);
-#endif
-#if __HAVE_DMA_FREELIST
-extern int	     DRM(freelist_create)(drm_freelist_t *bl, int count);
-extern int	     DRM(freelist_destroy)(drm_freelist_t *bl);
-extern int	     DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl,
-				       drm_buf_t *buf);
-extern drm_buf_t     *DRM(freelist_get)(drm_freelist_t *bl, int block);
-#endif
 #endif /* __HAVE_DMA */
 
 #if __REALLY_HAVE_AGP
diff --git a/linux/drm_agpsupport.h b/linux/drm_agpsupport.h
index 35dd866f..22790900 100644
--- a/linux/drm_agpsupport.h
+++ b/linux/drm_agpsupport.h
@@ -147,7 +147,7 @@ int DRM(agp_alloc)(struct inode *inode, struct file *filp,
 		return -ENOMEM;
 	}
 
-	entry->handle    = (unsigned long)memory->memory;
+	entry->handle    = (unsigned long)memory->key;
 	entry->memory    = memory;
 	entry->bound     = 0;
 	entry->pages     = pages;
@@ -187,6 +187,7 @@ int DRM(agp_unbind)(struct inode *inode, struct file *filp,
 	drm_device_t	  *dev	 = priv->dev;
 	drm_agp_binding_t request;
 	drm_agp_mem_t     *entry;
+	int ret;
 
 	if (!dev->agp || !dev->agp->acquired) return -EINVAL;
 	if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request)))
@@ -194,7 +195,10 @@ int DRM(agp_unbind)(struct inode *inode, struct file *filp,
 	if (!(entry = DRM(agp_lookup_entry)(dev, request.handle)))
 		return -EINVAL;
 	if (!entry->bound) return -EINVAL;
-	return DRM(unbind_agp)(entry->memory);
+	ret = DRM(unbind_agp)(entry->memory);
+	if (ret == 0)
+	    entry->bound = 0;
+	return ret;
 }
 
 int DRM(agp_bind)(struct inode *inode, struct file *filp,
diff --git a/linux/drm_bufs.h b/linux/drm_bufs.h
index b4e73699..97997dc1 100644
--- a/linux/drm_bufs.h
+++ b/linux/drm_bufs.h
@@ -211,7 +211,7 @@ int DRM(rmmap)(struct inode *inode, struct file *filp,
 	down(&dev->struct_sem);
 	list = &dev->maplist->head;
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *) list;
+		r_list = list_entry(list, drm_map_list_t, head);
 
 		if(r_list->map &&
 		   r_list->map->handle == request.handle &&
@@ -416,12 +416,6 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 		}
 		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 );
 
@@ -618,12 +612,6 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
 			buf->pending = 0;
 			init_waitqueue_head( &buf->dma_wait );
 			buf->filp    = 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 );
 		}
@@ -790,12 +778,6 @@ int DRM(addbufs_sg)( struct inode *inode, struct file *filp,
 
 		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 );
 
diff --git a/linux/drm_context.h b/linux/drm_context.h
index 39267b14..3853a7c6 100644
--- a/linux/drm_context.h
+++ b/linux/drm_context.h
@@ -36,7 +36,10 @@
 #define __NO_VERSION__
 #include "drmP.h"
 
-#if __HAVE_CTX_BITMAP
+#if !__HAVE_CTX_BITMAP
+#error "__HAVE_CTX_BITMAP must be defined"
+#endif
+
 
 /* ================================================================
  * Context bitmap support
@@ -195,7 +198,7 @@ int DRM(setsareactx)(struct inode *inode, struct file *filp,
 
 	down(&dev->struct_sem);
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		if(r_list->map &&
 		   r_list->map->handle == request.handle)
 			goto found;
@@ -222,16 +225,11 @@ found:
 
 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 );
 
@@ -240,13 +238,6 @@ int DRM(context_switch)( drm_device_t *dev, int old, int new )
                 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;
 }
 
@@ -262,11 +253,6 @@ int DRM(context_switch_complete)( drm_device_t *dev, int new )
 				/* 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 );
 
@@ -407,375 +393,3 @@ int DRM(rmctx)( struct inode *inode, struct file *filp,
 	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 = DRM(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_dma.h b/linux/drm_dma.h
index 4ea6b07d..640e245d 100644
--- a/linux/drm_dma.h
+++ b/linux/drm_dma.h
@@ -127,61 +127,6 @@ void DRM(dma_takedown)(drm_device_t *dev)
 }
 
 
-#if __HAVE_DMA_HISTOGRAM
-/* This is slow, but is useful for debugging. */
-int DRM(histogram_slot)(unsigned long count)
-{
-	int value = DRM_DMA_HISTOGRAM_INITIAL;
-	int slot;
-
-	for (slot = 0;
-	     slot < DRM_DMA_HISTOGRAM_SLOTS;
-	     ++slot, value = DRM_DMA_HISTOGRAM_NEXT(value)) {
-		if (count < value) return slot;
-	}
-	return DRM_DMA_HISTOGRAM_SLOTS - 1;
-}
-
-void DRM(histogram_compute)(drm_device_t *dev, drm_buf_t *buf)
-{
-	cycles_t queued_to_dispatched;
-	cycles_t dispatched_to_completed;
-	cycles_t completed_to_freed;
-	int	 q2d, d2c, c2f, q2c, q2f;
-
-	if (buf->time_queued) {
-		queued_to_dispatched	= (buf->time_dispatched
-					   - buf->time_queued);
-		dispatched_to_completed = (buf->time_completed
-					   - buf->time_dispatched);
-		completed_to_freed	= (buf->time_freed
-					   - buf->time_completed);
-
-		q2d = DRM(histogram_slot)(queued_to_dispatched);
-		d2c = DRM(histogram_slot)(dispatched_to_completed);
-		c2f = DRM(histogram_slot)(completed_to_freed);
-
-		q2c = DRM(histogram_slot)(queued_to_dispatched
-					  + dispatched_to_completed);
-		q2f = DRM(histogram_slot)(queued_to_dispatched
-					  + dispatched_to_completed
-					  + completed_to_freed);
-
-		atomic_inc(&dev->histo.total);
-		atomic_inc(&dev->histo.queued_to_dispatched[q2d]);
-		atomic_inc(&dev->histo.dispatched_to_completed[d2c]);
-		atomic_inc(&dev->histo.completed_to_freed[c2f]);
-
-		atomic_inc(&dev->histo.queued_to_completed[q2c]);
-		atomic_inc(&dev->histo.queued_to_freed[q2f]);
-
-	}
-	buf->time_queued     = 0;
-	buf->time_dispatched = 0;
-	buf->time_completed  = 0;
-	buf->time_freed	     = 0;
-}
-#endif
 
 void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf)
 {
@@ -191,9 +136,6 @@ void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf)
 	buf->pending  = 0;
 	buf->filp     = 0;
 	buf->used     = 0;
-#if __HAVE_DMA_HISTOGRAM
-	buf->time_completed = get_cycles();
-#endif
 
 	if ( __HAVE_DMA_WAITQUEUE && waitqueue_active(&buf->dma_wait)) {
 		wake_up_interruptible(&buf->dma_wait);
@@ -238,276 +180,6 @@ void DRM(reclaim_buffers)( struct file *filp )
 #endif
 
 
-/* GH: This is a big hack for now...
- */
-#if __HAVE_OLD_DMA
-
-void DRM(clear_next_buffer)(drm_device_t *dev)
-{
-	drm_device_dma_t *dma = dev->dma;
-
-	dma->next_buffer = NULL;
-	if (dma->next_queue && !DRM_BUFCOUNT(&dma->next_queue->waitlist)) {
-		wake_up_interruptible(&dma->next_queue->flush_queue);
-	}
-	dma->next_queue	 = NULL;
-}
-
-int DRM(select_queue)(drm_device_t *dev, void (*wrapper)(unsigned long))
-{
-	int	   i;
-	int	   candidate = -1;
-	int	   j	     = jiffies;
-
-	if (!dev) {
-		DRM_ERROR("No device\n");
-		return -1;
-	}
-	if (!dev->queuelist || !dev->queuelist[DRM_KERNEL_CONTEXT]) {
-				/* This only happens between the time the
-				   interrupt is initialized and the time
-				   the queues are initialized. */
-		return -1;
-	}
-
-				/* Doing "while locked" DMA? */
-	if (DRM_WAITCOUNT(dev, DRM_KERNEL_CONTEXT)) {
-		return DRM_KERNEL_CONTEXT;
-	}
-
-				/* If there are buffers on the last_context
-				   queue, and we have not been executing
-				   this context very long, continue to
-				   execute this context. */
-	if (dev->last_switch <= j
-	    && dev->last_switch + DRM_TIME_SLICE > j
-	    && DRM_WAITCOUNT(dev, dev->last_context)) {
-		return dev->last_context;
-	}
-
-				/* Otherwise, find a candidate */
-	for (i = dev->last_checked + 1; i < dev->queue_count; i++) {
-		if (DRM_WAITCOUNT(dev, i)) {
-			candidate = dev->last_checked = i;
-			break;
-		}
-	}
-
-	if (candidate < 0) {
-		for (i = 0; i < dev->queue_count; i++) {
-			if (DRM_WAITCOUNT(dev, i)) {
-				candidate = dev->last_checked = i;
-				break;
-			}
-		}
-	}
-
-	if (wrapper
-	    && candidate >= 0
-	    && candidate != dev->last_context
-	    && dev->last_switch <= j
-	    && dev->last_switch + DRM_TIME_SLICE > j) {
-		if (dev->timer.expires != dev->last_switch + DRM_TIME_SLICE) {
-			del_timer(&dev->timer);
-			dev->timer.function = wrapper;
-			dev->timer.data	    = (unsigned long)dev;
-			dev->timer.expires  = dev->last_switch+DRM_TIME_SLICE;
-			add_timer(&dev->timer);
-		}
-		return -1;
-	}
-
-	return candidate;
-}
-
-
-int DRM(dma_enqueue)(struct file *filp, drm_dma_t *d)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-	int		  i;
-	drm_queue_t	  *q;
-	drm_buf_t	  *buf;
-	int		  idx;
-	int		  while_locked = 0;
-	drm_device_dma_t  *dma = dev->dma;
-	DECLARE_WAITQUEUE(entry, current);
-
-	DRM_DEBUG("%d\n", d->send_count);
-
-	if (d->flags & _DRM_DMA_WHILE_LOCKED) {
-		int context = dev->lock.hw_lock->lock;
-
-		if (!_DRM_LOCK_IS_HELD(context)) {
-			DRM_ERROR("No lock held during \"while locked\""
-				  " request\n");
-			return -EINVAL;
-		}
-		if (d->context != _DRM_LOCKING_CONTEXT(context)
-		    && _DRM_LOCKING_CONTEXT(context) != DRM_KERNEL_CONTEXT) {
-			DRM_ERROR("Lock held by %d while %d makes"
-				  " \"while locked\" request\n",
-				  _DRM_LOCKING_CONTEXT(context),
-				  d->context);
-			return -EINVAL;
-		}
-		q = dev->queuelist[DRM_KERNEL_CONTEXT];
-		while_locked = 1;
-	} else {
-		q = dev->queuelist[d->context];
-	}
-
-
-	atomic_inc(&q->use_count);
-	if (atomic_read(&q->block_write)) {
-		add_wait_queue(&q->write_queue, &entry);
-		atomic_inc(&q->block_count);
-		for (;;) {
-			current->state = TASK_INTERRUPTIBLE;
-			if (!atomic_read(&q->block_write)) break;
-			schedule();
-			if (signal_pending(current)) {
-				atomic_dec(&q->use_count);
-				remove_wait_queue(&q->write_queue, &entry);
-				return -EINTR;
-			}
-		}
-		atomic_dec(&q->block_count);
-		current->state = TASK_RUNNING;
-		remove_wait_queue(&q->write_queue, &entry);
-	}
-
-	for (i = 0; i < d->send_count; i++) {
-		idx = d->send_indices[i];
-		if (idx < 0 || idx >= dma->buf_count) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Index %d (of %d max)\n",
-				  d->send_indices[i], dma->buf_count - 1);
-			return -EINVAL;
-		}
-		buf = dma->buflist[ idx ];
-		if (buf->filp != filp) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Process %d using buffer not owned\n",
-				  current->pid);
-			return -EINVAL;
-		}
-		if (buf->list != DRM_LIST_NONE) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Process %d using buffer %d on list %d\n",
-				  current->pid, buf->idx, buf->list);
-		}
-		buf->used	  = d->send_sizes[i];
-		buf->while_locked = while_locked;
-		buf->context	  = d->context;
-		if (!buf->used) {
-			DRM_ERROR("Queueing 0 length buffer\n");
-		}
-		if (buf->pending) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Queueing pending buffer:"
-				  " buffer %d, offset %d\n",
-				  d->send_indices[i], i);
-			return -EINVAL;
-		}
-		if (buf->waiting) {
-			atomic_dec(&q->use_count);
-			DRM_ERROR("Queueing waiting buffer:"
-				  " buffer %d, offset %d\n",
-				  d->send_indices[i], i);
-			return -EINVAL;
-		}
-		buf->waiting = 1;
-		if (atomic_read(&q->use_count) == 1
-		    || atomic_read(&q->finalization)) {
-			DRM(free_buffer)(dev, buf);
-		} else {
-			DRM(waitlist_put)(&q->waitlist, buf);
-			atomic_inc(&q->total_queued);
-		}
-	}
-	atomic_dec(&q->use_count);
-
-	return 0;
-}
-
-static int DRM(dma_get_buffers_of_order)(struct file *filp, drm_dma_t *d,
-					 int order)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-	int		  i;
-	drm_buf_t	  *buf;
-	drm_device_dma_t  *dma = dev->dma;
-
-	for (i = d->granted_count; i < d->request_count; i++) {
-		buf = DRM(freelist_get)(&dma->bufs[order].freelist,
-					d->flags & _DRM_DMA_WAIT);
-		if (!buf) break;
-		if (buf->pending || buf->waiting) {
-			DRM_ERROR("Free buffer %d in use: filp %p (w%d, p%d)\n",
-				  buf->idx,
-				  buf->filp,
-				  buf->waiting,
-				  buf->pending);
-		}
-		buf->filp     = filp;
-		if (copy_to_user(&d->request_indices[i],
-				 &buf->idx,
-				 sizeof(buf->idx)))
-			return -EFAULT;
-
-		if (copy_to_user(&d->request_sizes[i],
-				 &buf->total,
-				 sizeof(buf->total)))
-			return -EFAULT;
-
-		++d->granted_count;
-	}
-	return 0;
-}
-
-
-int DRM(dma_get_buffers)(struct file *filp, drm_dma_t *dma)
-{
-	int		  order;
-	int		  retcode = 0;
-	int		  tmp_order;
-
-	order = DRM(order)(dma->request_size);
-
-	dma->granted_count = 0;
-	retcode		   = DRM(dma_get_buffers_of_order)(filp, dma, order);
-
-	if (dma->granted_count < dma->request_count
-	    && (dma->flags & _DRM_DMA_SMALLER_OK)) {
-		for (tmp_order = order - 1;
-		     !retcode
-			     && dma->granted_count < dma->request_count
-			     && tmp_order >= DRM_MIN_ORDER;
-		     --tmp_order) {
-
-			retcode = DRM(dma_get_buffers_of_order)(filp, dma,
-								tmp_order);
-		}
-	}
-
-	if (dma->granted_count < dma->request_count
-	    && (dma->flags & _DRM_DMA_LARGER_OK)) {
-		for (tmp_order = order + 1;
-		     !retcode
-			     && dma->granted_count < dma->request_count
-			     && tmp_order <= DRM_MAX_ORDER;
-		     ++tmp_order) {
-
-			retcode = DRM(dma_get_buffers_of_order)(filp, dma,
-								tmp_order);
-		}
-	}
-	return 0;
-}
-
-#endif /* __HAVE_OLD_DMA */
 
 
 #if __HAVE_DMA_IRQ
@@ -538,10 +210,14 @@ int DRM(irq_install)( drm_device_t *dev, int irq )
 	dev->dma->this_buffer = NULL;
 
 #if __HAVE_DMA_IRQ_BH
+#if !HAS_WORKQUEUE
 	INIT_LIST_HEAD( &dev->tq.list );
 	dev->tq.sync = 0;
 	dev->tq.routine = DRM(dma_immediate_bh);
 	dev->tq.data = dev;
+#else
+	INIT_WORK(&dev->work, DRM(dma_immediate_bh), dev);
+#endif
 #endif
 
 #if __HAVE_VBL_IRQ
@@ -655,7 +331,7 @@ int DRM(wait_vblank)( DRM_IOCTL_ARGS )
 		 * for the same vblank sequence number; nothing to be done in
 		 * that case
 		 */
-		list_for_each( ( (struct list_head *) vbl_sig ), &dev->vbl_sigs.head ) {
+		list_for_each_entry( vbl_sig, &dev->vbl_sigs.head, head ) {
 			if (vbl_sig->sequence == vblwait.request.sequence
 			    && vbl_sig->info.si_signo == vblwait.request.signal
 			    && vbl_sig->task == current)
@@ -706,19 +382,20 @@ done:
 
 void DRM(vbl_send_signals)( drm_device_t *dev )
 {
-	struct list_head *tmp;
+	struct list_head *list, *tmp;
 	drm_vbl_sig_t *vbl_sig;
 	unsigned int vbl_seq = atomic_read( &dev->vbl_received );
 	unsigned long flags;
 
 	spin_lock_irqsave( &dev->vbl_lock, flags );
 
-	list_for_each_safe( ( (struct list_head *) vbl_sig ), tmp, &dev->vbl_sigs.head ) {
+	list_for_each_safe( list, tmp, &dev->vbl_sigs.head ) {
+		vbl_sig = list_entry( list, drm_vbl_sig_t, head );
 		if ( ( vbl_seq - vbl_sig->sequence ) <= (1<<23) ) {
 			vbl_sig->info.si_code = vbl_seq;
 			send_sig_info( vbl_sig->info.si_signo, &vbl_sig->info, vbl_sig->task );
 
-			list_del( (struct list_head *) vbl_sig );
+			list_del( list );
 
 			DRM_FREE( vbl_sig, sizeof(*vbl_sig) );
 
diff --git a/linux/drm_drv.h b/linux/drm_drv.h
index 0a4f3aeb..036cee35 100644
--- a/linux/drm_drv.h
+++ b/linux/drm_drv.h
@@ -84,9 +84,6 @@
 #ifndef __HAVE_SG
 #define __HAVE_SG			0
 #endif
-#ifndef __HAVE_KERNEL_CTX_SWITCH
-#define __HAVE_KERNEL_CTX_SWITCH	0
-#endif
 
 #ifndef DRIVER_PREINIT
 #define DRIVER_PREINIT()
@@ -121,9 +118,7 @@ static struct file_operations	DRM(fops) = {	\
 	.release = DRM(release),		\
 	.ioctl	 = DRM(ioctl),			\
 	.mmap	 = DRM(mmap),			\
-	.read	 = DRM(read),			\
 	.fasync  = DRM(fasync),			\
-	.poll	 = DRM(poll),			\
 }
 #endif
 
@@ -167,8 +162,8 @@ static drm_ioctl_desc_t		  DRM(ioctls)[] = {
 	[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_BLOCK)]         = { DRM(noop),        1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)]       = { DRM(noop),        1, 1 },
 	[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)]    = { DRM(authmagic),   1, 1 },
 
 	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)]       = { DRM(addmap),      1, 1 },
@@ -192,7 +187,13 @@ static drm_ioctl_desc_t		  DRM(ioctls)[] = {
 
 	[DRM_IOCTL_NR(DRM_IOCTL_LOCK)]	        = { DRM(lock),        1, 0 },
 	[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)]        = { DRM(unlock),      1, 0 },
+
+#if __HAVE_DMA_FLUSH
+	/* Gamma only, really */
 	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(finish),      1, 0 },
+#else
+	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(noop),      1, 0 },
+#endif
 
 #if __HAVE_DMA
 	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)]      = { DRM(addbufs),     1, 1 },
@@ -475,7 +476,9 @@ static int DRM(takedown)( drm_device_t *dev )
 #if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES
 	if ( dev->queuelist ) {
 		for ( i = 0 ; i < dev->queue_count ; i++ ) {
+#if __HAVE_DMA_WAITLIST
 			DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist );
+#endif
 			if ( dev->queuelist[i] ) {
 				DRM(free)( dev->queuelist[i],
 					  sizeof(*dev->queuelist[0]),
@@ -766,7 +769,7 @@ int DRM(release)( struct inode *inode, struct file *filp )
 	DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
 		   current->pid, (long)dev->device, dev->open_count );
 
-	if ( dev->lock.hw_lock &&
+	if ( priv->lock_count && dev->lock.hw_lock &&
 	     _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
 	     dev->lock.filp == filp ) {
 		DRM_DEBUG( "File %p released, freeing lock for context %d\n",
@@ -784,7 +787,7 @@ int DRM(release)( struct inode *inode, struct file *filp )
                                    server. */
 	}
 #if __HAVE_RELEASE
-	else if ( dev->lock.hw_lock ) {
+	else if ( priv->lock_count && dev->lock.hw_lock ) {
 		/* The lock is required to reclaim buffers */
 		DECLARE_WAITQUEUE( entry, current );
 
@@ -927,11 +930,8 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 #if __HAVE_MULTIPLE_DMA_QUEUES
 	drm_queue_t *q;
 #endif
-#if __HAVE_DMA_HISTOGRAM
-        cycles_t start;
 
-        dev->lck_start = start = get_cycles();
-#endif
+	++priv->lock_count;
 
         if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
 		return -EFAULT;
@@ -1011,19 +1011,10 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 			DRIVER_DMA_QUIESCENT();
 		}
 #endif
-#if __HAVE_KERNEL_CTX_SWITCH
-		if ( dev->last_context != lock.context ) {
-			DRM(context_switch)(dev, dev->last_context,
-					    lock.context);
-		}
-#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;
 }
 
@@ -1046,25 +1037,6 @@ int DRM(unlock)( struct inode *inode, struct file *filp,
 
 	atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
 
-#if __HAVE_KERNEL_CTX_SWITCH
-	/* We no longer really hold it, but if we are the next
-	 * agent to request it then we should just be able to
-	 * take it immediately and not eat the ioctl.
-	 */
-	dev->lock.filp = 0;
-	{
-		__volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
-		unsigned int old, new, prev, ctx;
-
-		ctx = lock.context;
-		do {
-			old  = *plock;
-			new  = ctx;
-			prev = cmpxchg(plock, old, new);
-		} while (prev != old);
-	}
-	wake_up_interruptible(&dev->lock.lock_queue);
-#else
 	DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
 			    DRM_KERNEL_CONTEXT );
 #if __HAVE_DMA_SCHEDULE
@@ -1079,7 +1051,6 @@ int DRM(unlock)( struct inode *inode, struct file *filp,
 			DRM_ERROR( "\n" );
 		}
 	}
-#endif /* !__HAVE_KERNEL_CTX_SWITCH */
 
 	unblock_all_signals();
 	return 0;
diff --git a/linux/drm_fops.h b/linux/drm_fops.h
index 10d1aed1..3baac693 100644
--- a/linux/drm_fops.h
+++ b/linux/drm_fops.h
@@ -57,6 +57,7 @@ int DRM(open_helper)(struct inode *inode, struct file *filp, drm_device_t *dev)
 	priv->dev	    = dev;
 	priv->ioctl_count   = 0;
 	priv->authenticated = capable(CAP_SYS_ADMIN);
+	priv->lock_count    = 0;
 
 	down(&dev->struct_sem);
 	if (!dev->file_last) {
@@ -113,97 +114,3 @@ int DRM(fasync)(int fd, struct file *filp, int on)
 }
 
 
-/* The drm_read and drm_write_string code (especially that which manages
-   the circular buffer), is based on Alessandro Rubini's LINUX DEVICE
-   DRIVERS (Cambridge: O'Reilly, 1998), pages 111-113. */
-
-ssize_t DRM(read)(struct file *filp, char *buf, size_t count, loff_t *off)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-	int	      left;
-	int	      avail;
-	int	      send;
-	int	      cur;
-
-	DRM_DEBUG("%p, %p\n", dev->buf_rp, dev->buf_wp);
-
-	while (dev->buf_rp == dev->buf_wp) {
-		DRM_DEBUG("  sleeping\n");
-		if (filp->f_flags & O_NONBLOCK) {
-			return -EAGAIN;
-		}
-		interruptible_sleep_on(&dev->buf_readers);
-		if (signal_pending(current)) {
-			DRM_DEBUG("  interrupted\n");
-			return -ERESTARTSYS;
-		}
-		DRM_DEBUG("  awake\n");
-	}
-
-	left  = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
-	avail = DRM_BSZ - left;
-	send  = DRM_MIN(avail, count);
-
-	while (send) {
-		if (dev->buf_wp > dev->buf_rp) {
-			cur = DRM_MIN(send, dev->buf_wp - dev->buf_rp);
-		} else {
-			cur = DRM_MIN(send, dev->buf_end - dev->buf_rp);
-		}
-		if (copy_to_user(buf, dev->buf_rp, cur))
-			return -EFAULT;
-		dev->buf_rp += cur;
-		if (dev->buf_rp == dev->buf_end) dev->buf_rp = dev->buf;
-		send -= cur;
-	}
-
-	wake_up_interruptible(&dev->buf_writers);
-	return DRM_MIN(avail, count);;
-}
-
-int DRM(write_string)(drm_device_t *dev, const char *s)
-{
-	int left   = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
-	int send   = strlen(s);
-	int count;
-
-	DRM_DEBUG("%d left, %d to send (%p, %p)\n",
-		  left, send, dev->buf_rp, dev->buf_wp);
-
-	if (left == 1 || dev->buf_wp != dev->buf_rp) {
-		DRM_ERROR("Buffer not empty (%d left, wp = %p, rp = %p)\n",
-			  left,
-			  dev->buf_wp,
-			  dev->buf_rp);
-	}
-
-	while (send) {
-		if (dev->buf_wp >= dev->buf_rp) {
-			count = DRM_MIN(send, dev->buf_end - dev->buf_wp);
-			if (count == left) --count; /* Leave a hole */
-		} else {
-			count = DRM_MIN(send, dev->buf_rp - dev->buf_wp - 1);
-		}
-		strncpy(dev->buf_wp, s, count);
-		dev->buf_wp += count;
-		if (dev->buf_wp == dev->buf_end) dev->buf_wp = dev->buf;
-		send -= count;
-	}
-
-	if (dev->buf_async) kill_fasync(&dev->buf_async, SIGIO, POLL_IN);
-
-	DRM_DEBUG("waking\n");
-	wake_up_interruptible(&dev->buf_readers);
-	return 0;
-}
-
-unsigned int DRM(poll)(struct file *filp, struct poll_table_struct *wait)
-{
-	drm_file_t   *priv = filp->private_data;
-	drm_device_t *dev  = priv->dev;
-
-	poll_wait(filp, &dev->buf_readers, wait);
-	if (dev->buf_wp != dev->buf_rp) return POLLIN | POLLRDNORM;
-	return 0;
-}
diff --git a/linux/drm_init.h b/linux/drm_init.h
index 2d6b6a3c..3aa4ad59 100644
--- a/linux/drm_init.h
+++ b/linux/drm_init.h
@@ -50,11 +50,6 @@ static void DRM(parse_option)(char *s)
 	for (c = s; *c && *c != ':'; c++); /* find : or \0 */
 	if (*c) r = c + 1; else r = NULL;  /* remember remainder */
 	*c = '\0';			   /* terminate */
-	if (!strcmp(s, "noctx")) {
-		DRM(flags) |= DRM_FLAG_NOCTX;
-		DRM_INFO("Server-mediated context switching OFF\n");
-		return;
-	}
 	if (!strcmp(s, "debug")) {
 		DRM(flags) |= DRM_FLAG_DEBUG;
 		DRM_INFO("Debug messages ON\n");
diff --git a/linux/drm_ioctl.h b/linux/drm_ioctl.h
index d753cce0..9b1069a1 100644
--- a/linux/drm_ioctl.h
+++ b/linux/drm_ioctl.h
@@ -205,7 +205,7 @@ int DRM(getmap)( struct inode *inode, struct file *filp,
 	i = 0;
 	list_for_each(list, &dev->maplist->head) {
 		if(i == idx) {
-			r_list = (drm_map_list_t *)list;
+			r_list = list_entry(list, drm_map_list_t, head);
 			break;
 		}
 		i++;
diff --git a/linux/drm_lists.h b/linux/drm_lists.h
deleted file mode 100644
index 4a64df71..00000000
--- a/linux/drm_lists.h
+++ /dev/null
@@ -1,230 +0,0 @@
-/* drm_lists.h -- Buffer list handling routines -*- linux-c -*-
- * Created: Mon Apr 19 20:54:22 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"
-
-#if __HAVE_DMA_WAITLIST
-
-int DRM(waitlist_create)(drm_waitlist_t *bl, int count)
-{
-	if (bl->count) return -EINVAL;
-
-	bl->bufs       = DRM(alloc)((bl->count + 2) * sizeof(*bl->bufs),
-				    DRM_MEM_BUFLISTS);
-
-	if(!bl->bufs) return -ENOMEM;
-	memset(bl->bufs, 0, sizeof(*bl->bufs));
-	bl->count      = count;
-	bl->rp	       = bl->bufs;
-	bl->wp	       = bl->bufs;
-	bl->end	       = &bl->bufs[bl->count+1];
-	bl->write_lock = SPIN_LOCK_UNLOCKED;
-	bl->read_lock  = SPIN_LOCK_UNLOCKED;
-	return 0;
-}
-
-int DRM(waitlist_destroy)(drm_waitlist_t *bl)
-{
-	if (bl->rp != bl->wp) return -EINVAL;
-	if (bl->bufs) DRM(free)(bl->bufs,
-				(bl->count + 2) * sizeof(*bl->bufs),
-				DRM_MEM_BUFLISTS);
-	bl->count = 0;
-	bl->bufs  = NULL;
-	bl->rp	  = NULL;
-	bl->wp	  = NULL;
-	bl->end	  = NULL;
-	return 0;
-}
-
-int DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf)
-{
-	int	      left;
-	unsigned long flags;
-
-	left = DRM_LEFTCOUNT(bl);
-	if (!left) {
-		DRM_ERROR("Overflow while adding buffer %d from filp %p\n",
-			  buf->idx, buf->filp);
-		return -EINVAL;
-	}
-#if __HAVE_DMA_HISTOGRAM
-	buf->time_queued = get_cycles();
-#endif
-	buf->list	 = DRM_LIST_WAIT;
-
-	spin_lock_irqsave(&bl->write_lock, flags);
-	*bl->wp = buf;
-	if (++bl->wp >= bl->end) bl->wp = bl->bufs;
-	spin_unlock_irqrestore(&bl->write_lock, flags);
-
-	return 0;
-}
-
-drm_buf_t *DRM(waitlist_get)(drm_waitlist_t *bl)
-{
-	drm_buf_t     *buf;
-	unsigned long flags;
-
-	spin_lock_irqsave(&bl->read_lock, flags);
-	buf = *bl->rp;
-	if (bl->rp == bl->wp) {
-		spin_unlock_irqrestore(&bl->read_lock, flags);
-		return NULL;
-	}
-	if (++bl->rp >= bl->end) bl->rp = bl->bufs;
-	spin_unlock_irqrestore(&bl->read_lock, flags);
-
-	return buf;
-}
-
-#endif /* __HAVE_DMA_WAITLIST */
-
-
-#if __HAVE_DMA_FREELIST
-
-int DRM(freelist_create)(drm_freelist_t *bl, int count)
-{
-	atomic_set(&bl->count, 0);
-	bl->next      = NULL;
-	init_waitqueue_head(&bl->waiting);
-	bl->low_mark  = 0;
-	bl->high_mark = 0;
-	atomic_set(&bl->wfh,   0);
-	bl->lock      = SPIN_LOCK_UNLOCKED;
-	++bl->initialized;
-	return 0;
-}
-
-int DRM(freelist_destroy)(drm_freelist_t *bl)
-{
-	atomic_set(&bl->count, 0);
-	bl->next = NULL;
-	return 0;
-}
-
-int DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf)
-{
-	drm_device_dma_t *dma  = dev->dma;
-
-	if (!dma) {
-		DRM_ERROR("No DMA support\n");
-		return 1;
-	}
-
-	if (buf->waiting || buf->pending || buf->list == DRM_LIST_FREE) {
-		DRM_ERROR("Freed buffer %d: w%d, p%d, l%d\n",
-			  buf->idx, buf->waiting, buf->pending, buf->list);
-	}
-	if (!bl) return 1;
-#if __HAVE_DMA_HISTOGRAM
-	buf->time_freed = get_cycles();
-	DRM(histogram_compute)(dev, buf);
-#endif
-	buf->list	= DRM_LIST_FREE;
-
-	spin_lock(&bl->lock);
-	buf->next	= bl->next;
-	bl->next	= buf;
-	spin_unlock(&bl->lock);
-
-	atomic_inc(&bl->count);
-	if (atomic_read(&bl->count) > dma->buf_count) {
-		DRM_ERROR("%d of %d buffers free after addition of %d\n",
-			  atomic_read(&bl->count), dma->buf_count, buf->idx);
-		return 1;
-	}
-				/* Check for high water mark */
-	if (atomic_read(&bl->wfh) && atomic_read(&bl->count)>=bl->high_mark) {
-		atomic_set(&bl->wfh, 0);
-		wake_up_interruptible(&bl->waiting);
-	}
-	return 0;
-}
-
-static drm_buf_t *DRM(freelist_try)(drm_freelist_t *bl)
-{
-	drm_buf_t	  *buf;
-
-	if (!bl) return NULL;
-
-				/* Get buffer */
-	spin_lock(&bl->lock);
-	if (!bl->next) {
-		spin_unlock(&bl->lock);
-		return NULL;
-	}
-	buf	  = bl->next;
-	bl->next  = bl->next->next;
-	spin_unlock(&bl->lock);
-
-	atomic_dec(&bl->count);
-	buf->next = NULL;
-	buf->list = DRM_LIST_NONE;
-	if (buf->waiting || buf->pending) {
-		DRM_ERROR("Free buffer %d: w%d, p%d, l%d\n",
-			  buf->idx, buf->waiting, buf->pending, buf->list);
-	}
-
-	return buf;
-}
-
-drm_buf_t *DRM(freelist_get)(drm_freelist_t *bl, int block)
-{
-	drm_buf_t	  *buf	= NULL;
-	DECLARE_WAITQUEUE(entry, current);
-
-	if (!bl || !bl->initialized) return NULL;
-
-				/* Check for low water mark */
-	if (atomic_read(&bl->count) <= bl->low_mark) /* Became low */
-		atomic_set(&bl->wfh, 1);
-	if (atomic_read(&bl->wfh)) {
-		if (block) {
-			add_wait_queue(&bl->waiting, &entry);
-			for (;;) {
-				current->state = TASK_INTERRUPTIBLE;
-				if (!atomic_read(&bl->wfh)
-				    && (buf = DRM(freelist_try)(bl))) break;
-				schedule();
-				if (signal_pending(current)) break;
-			}
-			current->state = TASK_RUNNING;
-			remove_wait_queue(&bl->waiting, &entry);
-		}
-		return buf;
-	}
-
-	return DRM(freelist_try)(bl);
-}
-
-#endif /* __HAVE_DMA_FREELIST */
diff --git a/linux/drm_lock.h b/linux/drm_lock.h
index e9b17cc4..cc9571ed 100644
--- a/linux/drm_lock.h
+++ b/linux/drm_lock.h
@@ -32,19 +32,13 @@
 #define __NO_VERSION__
 #include "drmP.h"
 
-int DRM(block)(struct inode *inode, struct file *filp, unsigned int cmd,
+int DRM(noop)(struct inode *inode, struct file *filp, unsigned int cmd,
 	       unsigned long arg)
 {
 	DRM_DEBUG("\n");
 	return 0;
 }
 
-int DRM(unblock)(struct inode *inode, struct file *filp, unsigned int cmd,
-		 unsigned long arg)
-{
-	DRM_DEBUG("\n");
-	return 0;
-}
 
 int DRM(lock_take)(__volatile__ unsigned int *lock, unsigned int context)
 {
@@ -109,113 +103,6 @@ int DRM(lock_free)(drm_device_t *dev,
 	return 0;
 }
 
-static int DRM(flush_queue)(drm_device_t *dev, int context)
-{
-	DECLARE_WAITQUEUE(entry, current);
-	int		  ret	= 0;
-	drm_queue_t	  *q	= dev->queuelist[context];
-
-	DRM_DEBUG("\n");
-
-	atomic_inc(&q->use_count);
-	if (atomic_read(&q->use_count) > 1) {
-		atomic_inc(&q->block_write);
-		add_wait_queue(&q->flush_queue, &entry);
-		atomic_inc(&q->block_count);
-		for (;;) {
-			current->state = TASK_INTERRUPTIBLE;
-			if (!DRM_BUFCOUNT(&q->waitlist)) break;
-			schedule();
-			if (signal_pending(current)) {
-				ret = -EINTR; /* Can't restart */
-				break;
-			}
-		}
-		atomic_dec(&q->block_count);
-		current->state = TASK_RUNNING;
-		remove_wait_queue(&q->flush_queue, &entry);
-	}
-	atomic_dec(&q->use_count);
-
-				/* NOTE: block_write is still incremented!
-				   Use drm_flush_unlock_queue to decrement. */
-	return ret;
-}
-
-static int DRM(flush_unblock_queue)(drm_device_t *dev, int context)
-{
-	drm_queue_t	  *q	= dev->queuelist[context];
-
-	DRM_DEBUG("\n");
-
-	atomic_inc(&q->use_count);
-	if (atomic_read(&q->use_count) > 1) {
-		if (atomic_read(&q->block_write)) {
-			atomic_dec(&q->block_write);
-			wake_up_interruptible(&q->write_queue);
-		}
-	}
-	atomic_dec(&q->use_count);
-	return 0;
-}
-
-int DRM(flush_block_and_flush)(drm_device_t *dev, int context,
-			       drm_lock_flags_t flags)
-{
-	int ret = 0;
-	int i;
-
-	DRM_DEBUG("\n");
-
-	if (flags & _DRM_LOCK_FLUSH) {
-		ret = DRM(flush_queue)(dev, DRM_KERNEL_CONTEXT);
-		if (!ret) ret = DRM(flush_queue)(dev, context);
-	}
-	if (flags & _DRM_LOCK_FLUSH_ALL) {
-		for (i = 0; !ret && i < dev->queue_count; i++) {
-			ret = DRM(flush_queue)(dev, i);
-		}
-	}
-	return ret;
-}
-
-int DRM(flush_unblock)(drm_device_t *dev, int context, drm_lock_flags_t flags)
-{
-	int ret = 0;
-	int i;
-
-	DRM_DEBUG("\n");
-
-	if (flags & _DRM_LOCK_FLUSH) {
-		ret = DRM(flush_unblock_queue)(dev, DRM_KERNEL_CONTEXT);
-		if (!ret) ret = DRM(flush_unblock_queue)(dev, context);
-	}
-	if (flags & _DRM_LOCK_FLUSH_ALL) {
-		for (i = 0; !ret && i < dev->queue_count; i++) {
-			ret = DRM(flush_unblock_queue)(dev, i);
-		}
-	}
-
-	return ret;
-}
-
-int DRM(finish)(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;
-	int		  ret	  = 0;
-	drm_lock_t	  lock;
-
-	DRM_DEBUG("\n");
-
-	if (copy_from_user(&lock, (drm_lock_t *)arg, sizeof(lock)))
-		return -EFAULT;
-	ret = DRM(flush_block_and_flush)(dev, lock.context, lock.flags);
-	DRM(flush_unblock)(dev, lock.context, lock.flags);
-	return ret;
-}
-
 /* If we get here, it means that the process has called DRM_IOCTL_LOCK
    without calling DRM_IOCTL_UNLOCK.
 
diff --git a/linux/drm_os_linux.h b/linux/drm_os_linux.h
index b57efd34..b760c169 100644
--- a/linux/drm_os_linux.h
+++ b/linux/drm_os_linux.h
@@ -47,9 +47,8 @@
 
 #define DRM_GETSAREA()							 \
 do { 									 \
-	struct list_head *list;						 \
-	list_for_each( list, &dev->maplist->head ) {			 \
-		drm_map_list_t *entry = (drm_map_list_t *)list;		 \
+	drm_map_list_t *entry;						 \
+	list_for_each_entry( entry, &dev->maplist->head, head ) {	 \
 		if ( entry->map &&					 \
 		     entry->map->type == _DRM_SHM &&			 \
 		     (entry->map->flags & _DRM_CONTAINS_LOCK) ) {	 \
@@ -61,28 +60,28 @@ do { 									 \
 
 #define DRM_HZ HZ
 
-#define DRM_WAIT_ON( ret, queue, timeout, condition )	\
-do {							\
-	DECLARE_WAITQUEUE(entry, current);		\
-	unsigned long end = jiffies + (timeout);	\
-	add_wait_queue(&(queue), &entry);		\
-							\
-	for (;;) {					\
-		current->state = TASK_INTERRUPTIBLE;	\
-		if (condition) 				\
-			break;				\
-		if((signed)(end - jiffies) <= 0) {	\
-			ret = -EBUSY;			\
-			break;				\
-		}					\
+#define DRM_WAIT_ON( ret, queue, timeout, condition )		\
+do {								\
+	DECLARE_WAITQUEUE(entry, current);			\
+	unsigned long end = jiffies + (timeout);		\
+	add_wait_queue(&(queue), &entry);			\
+								\
+	for (;;) {						\
+		current->state = TASK_INTERRUPTIBLE;		\
+		if (condition)					\
+			break;					\
+		if((signed)(end - jiffies) <= 0) {		\
+			ret = -EBUSY;				\
+			break;					\
+		}						\
 		schedule_timeout((HZ/100 > 1) ? HZ/100 : 1);	\
-		if (signal_pending(current)) {		\
-			ret = -EINTR;			\
-			break;				\
-		}					\
-	}						\
-	current->state = TASK_RUNNING;			\
-	remove_wait_queue(&(queue), &entry);		\
+		if (signal_pending(current)) {			\
+			ret = -EINTR;				\
+			break;					\
+		}						\
+	}							\
+	current->state = TASK_RUNNING;				\
+	remove_wait_queue(&(queue), &entry);			\
 } while (0)
 
 
diff --git a/linux/drm_proc.h b/linux/drm_proc.h
index 8524d204..14813722 100644
--- a/linux/drm_proc.h
+++ b/linux/drm_proc.h
@@ -50,10 +50,6 @@ static int	   DRM(bufs_info)(char *buf, char **start, off_t offset,
 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;
@@ -68,9 +64,6 @@ struct drm_proc_list {
 #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]))
 
@@ -187,7 +180,7 @@ static int DRM(_vm_info)(char *buf, char **start, off_t offset, int request,
 		       "address mtrr\n\n");
 	i = 0;
 	if (dev->maplist != NULL) list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		map = r_list->map;
 		if(!map) continue;
 		if (map->type < 0 || map->type > 4) type = "??";
@@ -491,143 +484,3 @@ static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
 #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
index 9101e136..76a10cf5 100644
--- a/linux/drm_vm.h
+++ b/linux/drm_vm.h
@@ -74,7 +74,7 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
 	if(!dev->agp || !dev->agp->cant_use_aperture) goto vm_nopage_error;
 
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		map = r_list->map;
 		if (!map) continue;
 		if (map->offset == VM_OFFSET(vma)) break;
@@ -190,7 +190,7 @@ void DRM(vm_shm_close)(struct vm_area_struct *vma)
 		found_maps = 0;
 		list = &dev->maplist->head;
 		list_for_each(list, &dev->maplist->head) {
-			r_list = (drm_map_list_t *) list;
+			r_list = list_entry(list, drm_map_list_t, head);
 			if (r_list->map == map) found_maps++;
 		}
 
@@ -393,7 +393,7 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma)
 	list_for_each(list, &dev->maplist->head) {
 		unsigned long off;
 
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		map = r_list->map;
 		if (!map) continue;
 		off = DRIVER_GET_MAP_OFS();
diff --git a/linux/gamma.h b/linux/gamma.h
index 44d8d5bc..a5090c84 100644
--- a/linux/gamma.h
+++ b/linux/gamma.h
@@ -95,54 +95,25 @@
 #define __HAVE_DMA_IRQ			1
 #define __HAVE_DMA_IRQ_BH		1
 
-#if 1
-#define DRIVER_PREINSTALL() do {					\
-	drm_gamma_private_t *dev_priv =					\
-				(drm_gamma_private_t *)dev->dev_private;\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	GAMMA_WRITE( GAMMA_GCOMMANDMODE,	0x00000004 );		\
-	GAMMA_WRITE( GAMMA_GDMACONTROL,		0x00000000 );		\
-} while (0)
-#define DRIVER_POSTINSTALL() do {					\
-	drm_gamma_private_t *dev_priv =					\
-				(drm_gamma_private_t *)dev->dev_private;\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3);			\
-	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00002001 );		\
-	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000008 );		\
-	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00039090 );		\
-} while (0)
-#else
-#define DRIVER_POSTINSTALL() do {					\
-	drm_gamma_private_t *dev_priv =					\
-				(drm_gamma_private_t *)dev->dev_private;\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00002000 );		\
-	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000004 );		\
-} while (0)
-
-#define DRIVER_PREINSTALL() do {					\
-	drm_gamma_private_t *dev_priv =					\
-				(drm_gamma_private_t *)dev->dev_private;\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	GAMMA_WRITE( GAMMA_GCOMMANDMODE,	GAMMA_QUEUED_DMA_MODE );\
-	GAMMA_WRITE( GAMMA_GDMACONTROL,		0x00000000 );\
-} while (0)
-#endif
-
-#define DRIVER_UNINSTALL() do {						\
-	drm_gamma_private_t *dev_priv =					\
-				(drm_gamma_private_t *)dev->dev_private;\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);			\
-	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3);			\
-	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00000000 );		\
-	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000000 );		\
-	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00000000 );		\
-} while (0)
-
 #define DRIVER_AGP_BUFFERS_MAP( dev )					\
 	((drm_gamma_private_t *)((dev)->dev_private))->buffers
 
+/* Gamma makes use of a wierd mechanism to get the DDX driver to do
+ * context switches on behalf of the 3d clients via a trip to the
+ * kernel module.  This requires read/poll functionality on the drm
+ * file descriptor not normally present:
+ */
+#define DRIVER_FOPS				\
+static struct file_operations	DRM(fops) = {	\
+	.owner   = THIS_MODULE,			\
+	.open	 = DRM(open),			\
+	.flush	 = DRM(flush),			\
+	.release = DRM(release),		\
+	.ioctl	 = DRM(ioctl),			\
+	.mmap	 = DRM(mmap),			\
+	.read	 = DRM(read),			\
+	.fasync  = DRM(fasync),			\
+	.poll	 = DRM(poll),			\
+}
+
 #endif /* __GAMMA_H__ */
diff --git a/linux/gamma_dma.c b/linux/gamma_dma.c
index a3c21d11..baa6b287 100644
--- a/linux/gamma_dma.c
+++ b/linux/gamma_dma.c
@@ -127,9 +127,13 @@ void gamma_dma_service(int irq, void *device, struct pt_regs *regs)
 		}
 		clear_bit(0, &dev->dma_flag);
 
+#if !HAS_WORKQUEUE
 				/* Dispatch new buffer */
 		queue_task(&dev->tq, &tq_immediate);
 		mark_bh(IMMEDIATE_BH);
+#else
+		schedule_work(&dev->work);
+#endif
 	}
 }
 
@@ -141,15 +145,9 @@ static int gamma_do_dma(drm_device_t *dev, int locked)
 	drm_buf_t	 *buf;
 	int		 retcode = 0;
 	drm_device_dma_t *dma = dev->dma;
-#if DRM_DMA_HISTOGRAM
-	cycles_t	 dma_start, dma_stop;
-#endif
 
 	if (test_and_set_bit(0, &dev->dma_flag)) return -EBUSY;
 
-#if DRM_DMA_HISTOGRAM
-	dma_start = get_cycles();
-#endif
 
 	if (!dma->next_buffer) {
 		DRM_ERROR("No next_buffer\n");
@@ -223,9 +221,6 @@ static int gamma_do_dma(drm_device_t *dev, int locked)
 	buf->pending	 = 1;
 	buf->waiting	 = 0;
 	buf->list	 = DRM_LIST_PEND;
-#if DRM_DMA_HISTOGRAM
-	buf->time_dispatched = get_cycles();
-#endif
 
 	/* WE NOW ARE ON LOGICAL PAGES!!! - overriding address */
 	address = buf->idx << 12;
@@ -247,10 +242,6 @@ cleanup:
 
 	clear_bit(0, &dev->dma_flag);
 
-#if DRM_DMA_HISTOGRAM
-	dma_stop = get_cycles();
-	atomic_inc(&dev->histo.dma[gamma_histogram_slot(dma_stop - dma_start)]);
-#endif
 
 	return retcode;
 }
@@ -275,9 +266,6 @@ int gamma_dma_schedule(drm_device_t *dev, int locked)
 	int		 missed;
 	int		 expire	   = 20;
 	drm_device_dma_t *dma	   = dev->dma;
-#if DRM_DMA_HISTOGRAM
-	cycles_t	 schedule_start;
-#endif
 
 	if (test_and_set_bit(0, &dev->interrupt_flag)) {
 				/* Not reentrant */
@@ -286,9 +274,6 @@ int gamma_dma_schedule(drm_device_t *dev, int locked)
 	}
 	missed = atomic_read(&dev->counts[10]);
 
-#if DRM_DMA_HISTOGRAM
-	schedule_start = get_cycles();
-#endif
 
 again:
 	if (dev->context_flag) {
@@ -335,10 +320,6 @@ again:
 
 	clear_bit(0, &dev->interrupt_flag);
 
-#if DRM_DMA_HISTOGRAM
-	atomic_inc(&dev->histo.schedule[gamma_histogram_slot(get_cycles()
-							   - schedule_start)]);
-#endif
 	return retcode;
 }
 
@@ -450,10 +431,6 @@ static int gamma_dma_priority(struct file *filp,
 			}
 		}
 
-#if DRM_DMA_HISTOGRAM
-		buf->time_queued     = get_cycles();
-		buf->time_dispatched = buf->time_queued;
-#endif
 		gamma_dma_dispatch(dev, address, length);
 		atomic_inc(&dev->counts[9]); /* _DRM_STAT_SPECIAL */
 		atomic_add(length, &dev->counts[8]); /* _DRM_STAT_PRIMARY */
@@ -607,7 +584,7 @@ static int gamma_do_init_dma( drm_device_t *dev, drm_gamma_init_t *init )
 	memset( dev_priv, 0, sizeof(drm_gamma_private_t) );
 
 	list_for_each(list, &dev->maplist->head) {
-		drm_map_list_t *r_list = (drm_map_list_t *)list;
+		drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 		if( r_list->map &&
 		    r_list->map->type == _DRM_SHM &&
 		    r_list->map->flags & _DRM_CONTAINS_LOCK ) {
@@ -669,7 +646,8 @@ int gamma_do_cleanup_dma( drm_device_t *dev )
 	if ( dev->dev_private ) {
 		drm_gamma_private_t *dev_priv = dev->dev_private;
 
-		DRM_IOREMAPFREE( dev_priv->buffers );
+		if ( dev_priv->buffers != NULL )
+			DRM_IOREMAPFREE( dev_priv->buffers );
 
 		DRM(free)( dev->dev_private, sizeof(drm_gamma_private_t),
 			   DRM_MEM_DRIVER );
@@ -811,7 +789,7 @@ int gamma_setsareactx(struct inode *inode, struct file *filp,
 	down(&dev->struct_sem);
 	r_list = NULL;
 	list_for_each(list, &dev->maplist->head) {
-		r_list = (drm_map_list_t *)list;
+		r_list = list_entry(list, drm_map_list_t, head);
 		if(r_list->map &&
 		   r_list->map->handle == request.handle) break;
 	}
@@ -833,3 +811,35 @@ int gamma_setsareactx(struct inode *inode, struct file *filp,
 	up(&dev->struct_sem);
 	return 0;
 }
+
+void DRM(driver_irq_preinstall)( drm_device_t *dev ) {
+	drm_gamma_private_t *dev_priv =
+				(drm_gamma_private_t *)dev->dev_private;
+
+	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2);
+
+	GAMMA_WRITE( GAMMA_GCOMMANDMODE,	0x00000004 );
+	GAMMA_WRITE( GAMMA_GDMACONTROL,		0x00000000 );
+}
+
+void DRM(driver_irq_postinstall)( drm_device_t *dev ) {
+	drm_gamma_private_t *dev_priv =
+				(drm_gamma_private_t *)dev->dev_private;
+
+	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3);
+
+	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00002001 );
+	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000008 );
+	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00039090 );
+}
+
+void DRM(driver_irq_uninstall)( drm_device_t *dev ) {
+	drm_gamma_private_t *dev_priv =
+				(drm_gamma_private_t *)dev->dev_private;
+
+	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3);
+
+	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00000000 );
+	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000000 );
+	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00000000 );
+}
diff --git a/linux/gamma_drv.c b/linux/gamma_drv.c
index b41526bb..f1b8b205 100644
--- a/linux/gamma_drv.c
+++ b/linux/gamma_drv.c
@@ -39,16 +39,18 @@
 #include "drm_auth.h"
 #include "drm_agpsupport.h"
 #include "drm_bufs.h"
-#include "drm_context.h"
+#include "gamma_context.h"	/* NOTE! */
 #include "drm_dma.h"
+#include "gamma_old_dma.h"	/* NOTE */
 #include "drm_drawable.h"
 #include "drm_drv.h"
 
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
-#include "drm_lists.h"
+#include "gamma_lists.h"        /* NOTE */
 #include "drm_lock.h"
+#include "gamma_lock.h"		/* NOTE */
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux/gamma_drv.h b/linux/gamma_drv.h
index 2f7d3588..36affa68 100644
--- a/linux/gamma_drv.h
+++ b/linux/gamma_drv.h
@@ -59,6 +59,29 @@ extern int  gamma_dma(struct inode *inode, struct file *filp,
 extern int  gamma_find_devices(void);
 extern int  gamma_found(void);
 
+/* Gamma-specific code pulled from drm_dma.h:
+ */
+extern void	     DRM(clear_next_buffer)(drm_device_t *dev);
+extern int	     DRM(select_queue)(drm_device_t *dev,
+				       void (*wrapper)(unsigned long));
+extern int	     DRM(dma_enqueue)(struct file *filp, drm_dma_t *dma);
+extern int	     DRM(dma_get_buffers)(struct file *filp, drm_dma_t *dma);
+
+
+/* Gamma-specific code pulled from drm_lists.h (now renamed gamma_lists.h):
+ */
+extern int	     DRM(waitlist_create)(drm_waitlist_t *bl, int count);
+extern int	     DRM(waitlist_destroy)(drm_waitlist_t *bl);
+extern int	     DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf);
+extern drm_buf_t     *DRM(waitlist_get)(drm_waitlist_t *bl);
+extern int	     DRM(freelist_create)(drm_freelist_t *bl, int count);
+extern int	     DRM(freelist_destroy)(drm_freelist_t *bl);
+extern int	     DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl,
+				       drm_buf_t *buf);
+extern drm_buf_t     *DRM(freelist_get)(drm_freelist_t *bl, int block);
+
+
+
 #define GLINT_DRI_BUF_COUNT 256
 
 #define GAMMA_OFF(reg)						   \
diff --git a/linux/i810.h b/linux/i810.h
index f37cb2e8..72cbed32 100644
--- a/linux/i810.h
+++ b/linux/i810.h
@@ -93,7 +93,7 @@
  */
 #define __HAVE_DMA		1
 #define __HAVE_DMA_QUEUE	1
-#define __HAVE_DMA_WAITLIST	1
+#define __HAVE_DMA_WAITLIST	0
 #define __HAVE_DMA_RECLAIM	1
 
 #define __HAVE_DMA_QUIESCENT	1
diff --git a/linux/i810_dma.c b/linux/i810_dma.c
index de9345e3..a3727164 100644
--- a/linux/i810_dma.c
+++ b/linux/i810_dma.c
@@ -122,9 +122,7 @@ static struct file_operations i810_buffer_fops = {
 	.release = DRM(release),
 	.ioctl	 = DRM(ioctl),
 	.mmap	 = i810_mmap_buffers,
-	.read	 = DRM(read),
 	.fasync  = DRM(fasync),
-      	.poll	 = DRM(poll),
 };
 
 int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
@@ -263,7 +261,8 @@ static int i810_dma_cleanup(drm_device_t *dev)
 		for (i = 0; i < dma->buf_count; i++) {
 			drm_buf_t *buf = dma->buflist[ i ];
 			drm_i810_buf_priv_t *buf_priv = buf->dev_private;
-			DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
+			if ( buf_priv->kernel_virtual && buf->total )
+				DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
 		}
 	}
    	return 0;
@@ -347,7 +346,7 @@ static int i810_dma_initialize(drm_device_t *dev,
    	memset(dev_priv, 0, sizeof(drm_i810_private_t));
 
 	list_for_each(list, &dev->maplist->head) {
-		drm_map_list_t *r_list = (drm_map_list_t *)list;
+		drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 		if( r_list->map &&
 		    r_list->map->type == _DRM_SHM &&
 		    r_list->map->flags & _DRM_CONTAINS_LOCK ) {
diff --git a/linux/i810_drv.c b/linux/i810_drv.c
index 439d7887..0bc79386 100644
--- a/linux/i810_drv.c
+++ b/linux/i810_drv.c
@@ -49,7 +49,6 @@
 #include "drm_init.h"
 #include "drm_ioctl.h"
 #include "drm_lock.h"
-#include "drm_lists.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux/i830.h b/linux/i830.h
index a351a4cf..432397a8 100644
--- a/linux/i830.h
+++ b/linux/i830.h
@@ -94,7 +94,7 @@
  */
 #define __HAVE_DMA		1
 #define __HAVE_DMA_QUEUE	1
-#define __HAVE_DMA_WAITLIST	1
+#define __HAVE_DMA_WAITLIST	0
 #define __HAVE_DMA_RECLAIM	1
 
 #define __HAVE_DMA_QUIESCENT	1
diff --git a/linux/i830_dma.c b/linux/i830_dma.c
index 47f10d56..df58e990 100644
--- a/linux/i830_dma.c
+++ b/linux/i830_dma.c
@@ -130,9 +130,7 @@ static struct file_operations i830_buffer_fops = {
 	.release = DRM(release),
 	.ioctl	 = DRM(ioctl),
 	.mmap	 = i830_mmap_buffers,
-	.read	 = DRM(read),
 	.fasync  = DRM(fasync),
-      	.poll	 = DRM(poll),
 };
 
 int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
@@ -280,7 +278,8 @@ static int i830_dma_cleanup(drm_device_t *dev)
 		for (i = 0; i < dma->buf_count; i++) {
 			drm_buf_t *buf = dma->buflist[ i ];
 			drm_i830_buf_priv_t *buf_priv = buf->dev_private;
-			DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
+			if ( buf_priv->kernel_virtual && buf->total )
+				DRM(ioremapfree)(buf_priv->kernel_virtual, buf->total);
 		}
 	}
    	return 0;
@@ -370,7 +369,7 @@ static int i830_dma_initialize(drm_device_t *dev,
    	memset(dev_priv, 0, sizeof(drm_i830_private_t));
 
 	list_for_each(list, &dev->maplist->head) {
-		drm_map_list_t *r_list = (drm_map_list_t *)list;
+		drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 		if( r_list->map &&
 		    r_list->map->type == _DRM_SHM &&
 		    r_list->map->flags & _DRM_CONTAINS_LOCK ) {
diff --git a/linux/i830_drv.c b/linux/i830_drv.c
index d9a659a4..0735c94d 100644
--- a/linux/i830_drv.c
+++ b/linux/i830_drv.c
@@ -51,7 +51,6 @@
 #include "drm_init.h"
 #include "drm_ioctl.h"
 #include "drm_lock.h"
-#include "drm_lists.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux/picker.c b/linux/picker.c
deleted file mode 100644
index 6c228dfc..00000000
--- a/linux/picker.c
+++ /dev/null
@@ -1,30 +0,0 @@
-
-#include <linux/config.h>
-#include <linux/version.h>
-
-#ifndef CONFIG_SMP
-#define CONFIG_SMP 0
-#endif
-
-#ifndef CONFIG_MODULES
-#define CONFIG_MODULES 0
-#endif
-
-#ifndef CONFIG_MODVERSIONS
-#define CONFIG_MODVERSIONS 0
-#endif
-
-#ifndef CONFIG_AGP_MODULE
-#define CONFIG_AGP_MODULE 0
-#endif
-
-#ifndef CONFIG_AGP
-#define CONFIG_AGP 0
-#endif
-
-SMP = CONFIG_SMP
-MODULES = CONFIG_MODULES
-MODVERSIONS = CONFIG_MODVERSIONS
-AGP = CONFIG_AGP
-AGP_MODULE = CONFIG_AGP_MODULE
-RELEASE = UTS_RELEASE
diff --git a/linux/sis_drv.c b/linux/sis_drv.c
index 0c917bd4..3dd075d3 100644
--- a/linux/sis_drv.c
+++ b/linux/sis_drv.c
@@ -41,7 +41,6 @@
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
-#include "drm_lists.h"
 #include "drm_lock.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
diff --git a/shared-core/mga_dma.c b/shared-core/mga_dma.c
index 5e95c9f9..96fd97ff 100644
--- a/shared-core/mga_dma.c
+++ b/shared-core/mga_dma.c
@@ -642,9 +642,12 @@ int mga_do_cleanup_dma( drm_device_t *dev )
 	if ( dev->dev_private ) {
 		drm_mga_private_t *dev_priv = dev->dev_private;
 
-		DRM_IOREMAPFREE( dev_priv->warp );
-		DRM_IOREMAPFREE( dev_priv->primary );
-		DRM_IOREMAPFREE( dev_priv->buffers );
+		if ( dev_priv->warp != NULL )
+			DRM_IOREMAPFREE( dev_priv->warp );
+		if ( dev_priv->primary != NULL )
+			DRM_IOREMAPFREE( dev_priv->primary );
+		if ( dev_priv->buffers != NULL )
+			DRM_IOREMAPFREE( dev_priv->buffers );
 
 		if ( dev_priv->head != NULL ) {
 			mga_freelist_cleanup( dev );
diff --git a/shared-core/r128_cce.c b/shared-core/r128_cce.c
index 7f0f4325..ad03f4f9 100644
--- a/shared-core/r128_cce.c
+++ b/shared-core/r128_cce.c
@@ -619,9 +619,12 @@ int r128_do_cleanup_cce( drm_device_t *dev )
 #if __REALLY_HAVE_SG
 		if ( !dev_priv->is_pci ) {
 #endif
-			DRM_IOREMAPFREE( dev_priv->cce_ring );
-			DRM_IOREMAPFREE( dev_priv->ring_rptr );
-			DRM_IOREMAPFREE( dev_priv->buffers );
+			if ( dev_priv->cce_ring != NULL )
+				DRM_IOREMAPFREE( dev_priv->cce_ring );
+			if ( dev_priv->ring_rptr != NULL )
+				DRM_IOREMAPFREE( dev_priv->ring_rptr );
+			if ( dev_priv->buffers != NULL )
+				DRM_IOREMAPFREE( dev_priv->buffers );
 #if __REALLY_HAVE_SG
 		} else {
 			if (!DRM(ati_pcigart_cleanup)( dev,
diff --git a/shared-core/radeon_cp.c b/shared-core/radeon_cp.c
index 3ec8dfd1..fce148a0 100644
--- a/shared-core/radeon_cp.c
+++ b/shared-core/radeon_cp.c
@@ -36,12 +36,6 @@
 
 #define RADEON_FIFO_DEBUG	0
 
-#if defined(__alpha__) || defined(__powerpc__)
-# define PCIGART_ENABLED
-#else
-# undef PCIGART_ENABLED
-#endif
-
 
 /* CP microcode (from ATI) */
 static u32 R200_cp_microcode[][2] = {
@@ -777,7 +771,7 @@ static void radeon_do_cp_reset( drm_radeon_private_t *dev_priv )
 
 	cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 	RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
-	*dev_priv->ring.head = cur_read_ptr;
+	SET_RING_HEAD( dev_priv, cur_read_ptr );
 	dev_priv->ring.tail = cur_read_ptr;
 }
 
@@ -889,13 +883,18 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 	/* Initialize the ring buffer's read and write pointers */
 	cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 	RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
-	*dev_priv->ring.head = cur_read_ptr;
+	SET_RING_HEAD( dev_priv, cur_read_ptr );
 	dev_priv->ring.tail = cur_read_ptr;
 
+#if __REALLY_HAVE_AGP
 	if ( !dev_priv->is_pci ) {
 		RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
-			      dev_priv->ring_rptr->offset );
-	} else {
+			      dev_priv->ring_rptr->offset
+			      - dev->agp->base
+			      + dev_priv->agp_vm_start);
+	} else
+#endif
+	{
 		drm_sg_mem_t *entry = dev->sg;
 		unsigned long tmp_ofs, page_ofs;
 
@@ -920,7 +919,7 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 					 + RADEON_SCRATCH_REG_OFFSET );
 
 	dev_priv->scratch = ((__volatile__ u32 *)
-			     dev_priv->ring.head +
+			     dev_priv->ring_rptr->handle +
 			     (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
 
 	RADEON_WRITE( RADEON_SCRATCH_UMSK, 0x7 );
@@ -990,17 +989,6 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 
 	dev_priv->is_pci = init->is_pci;
 
-#if !defined(PCIGART_ENABLED)
-	/* PCI support is not 100% working, so we disable it here.
-	 */
-	if ( dev_priv->is_pci ) {
-		DRM_ERROR( "PCI GART not yet supported for Radeon!\n" );
-		dev->dev_private = (void *)dev_priv;
-		radeon_do_cleanup_cp(dev);
-		return DRM_ERR(EINVAL);
-	}
-#endif
-
 	if ( dev_priv->is_pci && !dev->sg ) {
 		DRM_ERROR( "PCI GART memory not allocated!\n" );
 		dev->dev_private = (void *)dev_priv;
@@ -1097,6 +1085,13 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 					 RADEON_ROUND_PREC_8TH_PIX);
 
 	DRM_GETSAREA();
+
+	dev_priv->fb_offset = init->fb_offset;
+	dev_priv->mmio_offset = init->mmio_offset;
+	dev_priv->ring_offset = init->ring_offset;
+	dev_priv->ring_rptr_offset = init->ring_rptr_offset;
+	dev_priv->buffers_offset = init->buffers_offset;
+	dev_priv->agp_textures_offset = init->agp_textures_offset;
 	
 	if(!dev_priv->sarea) {
 		DRM_ERROR("could not find sarea!\n");
@@ -1204,9 +1199,6 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 	DRM_DEBUG( "dev_priv->agp_buffers_offset 0x%lx\n",
 		   dev_priv->agp_buffers_offset );
 
-	dev_priv->ring.head = ((__volatile__ u32 *)
-			       dev_priv->ring_rptr->handle);
-
 	dev_priv->ring.start = (u32 *)dev_priv->cp_ring->handle;
 	dev_priv->ring.end = ((u32 *)dev_priv->cp_ring->handle
 			      + init->ring_size / sizeof(u32));
@@ -1217,7 +1209,6 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 		(dev_priv->ring.size / sizeof(u32)) - 1;
 
 	dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
-	dev_priv->ring.ring_rptr = dev_priv->ring_rptr;
 
 #if __REALLY_HAVE_SG
 	if ( dev_priv->is_pci ) {
@@ -1279,9 +1270,12 @@ int radeon_do_cleanup_cp( drm_device_t *dev )
 		drm_radeon_private_t *dev_priv = dev->dev_private;
 
 		if ( !dev_priv->is_pci ) {
-			DRM_IOREMAPFREE( dev_priv->cp_ring );
-			DRM_IOREMAPFREE( dev_priv->ring_rptr );
-			DRM_IOREMAPFREE( dev_priv->buffers );
+			if ( dev_priv->cp_ring != NULL )
+				DRM_IOREMAPFREE( dev_priv->cp_ring );
+			if ( dev_priv->ring_rptr != NULL )
+				DRM_IOREMAPFREE( dev_priv->ring_rptr );
+			if ( dev_priv->buffers != NULL )
+				DRM_IOREMAPFREE( dev_priv->buffers );
 		} else {
 #if __REALLY_HAVE_SG
 			if (!DRM(ati_pcigart_cleanup)( dev,
@@ -1592,10 +1586,10 @@ int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n )
 {
 	drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
 	int i;
-	u32 last_head = GET_RING_HEAD(ring);
+	u32 last_head = GET_RING_HEAD( dev_priv );
 
 	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
-		u32 head = GET_RING_HEAD(ring);
+		u32 head = GET_RING_HEAD( dev_priv );
 
 		ring->space = (head - ring->tail) * sizeof(u32);
 		if ( ring->space <= 0 )
diff --git a/shared-core/radeon_drm.h b/shared-core/radeon_drm.h
index b280eae5..7efb3c16 100644
--- a/shared-core/radeon_drm.h
+++ b/shared-core/radeon_drm.h
@@ -526,6 +526,10 @@ typedef struct drm_radeon_indirect {
 #define RADEON_PARAM_LAST_CLEAR            4
 #define RADEON_PARAM_IRQ_NR                5
 #define RADEON_PARAM_AGP_BASE              6 /* card offset of agp base */
+#define RADEON_PARAM_REGISTER_HANDLE       7 /* for drmMap() */
+#define RADEON_PARAM_STATUS_HANDLE         8
+#define RADEON_PARAM_SAREA_HANDLE          9
+#define RADEON_PARAM_AGP_TEX_HANDLE        10
 
 typedef struct drm_radeon_getparam {
 	int param;
diff --git a/shared-core/radeon_drv.h b/shared-core/radeon_drv.h
index 6d70576d..f79cc6da 100644
--- a/shared-core/radeon_drv.h
+++ b/shared-core/radeon_drv.h
@@ -31,8 +31,8 @@
 #ifndef __RADEON_DRV_H__
 #define __RADEON_DRV_H__
 
-#define GET_RING_HEAD(ring)		DRM_READ32(  (ring)->ring_rptr, 0 ) /* (ring)->head */
-#define SET_RING_HEAD(ring,val)		DRM_WRITE32( (ring)->ring_rptr, 0, (val) ) /* (ring)->head */
+#define GET_RING_HEAD(dev_priv)		DRM_READ32(  (dev_priv)->ring_rptr, 0 )
+#define SET_RING_HEAD(dev_priv,val)	DRM_WRITE32( (dev_priv)->ring_rptr, 0, (val) )
 
 typedef struct drm_radeon_freelist {
    	unsigned int age;
@@ -47,13 +47,11 @@ typedef struct drm_radeon_ring_buffer {
 	int size;
 	int size_l2qw;
 
-	volatile u32 *head;
 	u32 tail;
 	u32 tail_mask;
 	int space;
 
 	int high_mark;
-	drm_local_map_t *ring_rptr;
 } drm_radeon_ring_buffer_t;
 
 typedef struct drm_radeon_depth_clear_t {
@@ -126,6 +124,13 @@ typedef struct drm_radeon_private {
 	u32 depth_pitch_offset;
 
 	drm_radeon_depth_clear_t depth_clear;
+	
+	unsigned long fb_offset;
+	unsigned long mmio_offset;
+	unsigned long ring_offset;
+	unsigned long ring_rptr_offset;
+	unsigned long buffers_offset;
+	unsigned long agp_textures_offset;
 
 	drm_local_map_t *sarea;
 	drm_local_map_t *fb;
@@ -776,7 +781,7 @@ extern int RADEON_READ_PLL( drm_device_t *dev, int addr );
 #define RING_SPACE_TEST_WITH_RETURN( dev_priv )				\
 do {									\
 	if (!(dev_priv->stats.boxes & RADEON_BOX_DMA_IDLE)) {		\
-		u32 head = GET_RING_HEAD(&dev_priv->ring);		\
+		u32 head = GET_RING_HEAD( dev_priv );			\
 		if (head == dev_priv->ring.tail)			\
 			dev_priv->stats.boxes |= RADEON_BOX_DMA_IDLE;	\
 	}								\
@@ -848,8 +853,8 @@ do {									\
 
 #define COMMIT_RING() do {						\
 	/* Flush writes to ring */					\
-	DRM_READMEMORYBARRIER(dev_priv->mmio);					\
-	GET_RING_HEAD( &dev_priv->ring );				\
+	DRM_READMEMORYBARRIER( dev_priv->mmio );			\
+	GET_RING_HEAD( dev_priv );					\
 	RADEON_WRITE( RADEON_CP_RB_WPTR, dev_priv->ring.tail );		\
 	/* read from PCI bus to ensure correct posting */		\
 	RADEON_READ( RADEON_CP_RB_RPTR );				\
diff --git a/shared-core/radeon_state.c b/shared-core/radeon_state.c
index 86cbead5..8e9485a7 100644
--- a/shared-core/radeon_state.c
+++ b/shared-core/radeon_state.c
@@ -2191,6 +2191,19 @@ int radeon_cp_getparam( DRM_IOCTL_ARGS )
 	case RADEON_PARAM_AGP_BASE:
 		value = dev_priv->agp_vm_start;
 		break;
+	case RADEON_PARAM_REGISTER_HANDLE:
+		value = dev_priv->mmio_offset;
+		break;
+	case RADEON_PARAM_STATUS_HANDLE:
+		value = dev_priv->ring_rptr_offset;
+		break;
+	case RADEON_PARAM_SAREA_HANDLE:
+		/* The lock is the first dword in the sarea. */
+		value = (int)dev->lock.hw_lock; 
+		break;	
+	case RADEON_PARAM_AGP_TEX_HANDLE:
+		value = dev_priv->agp_textures_offset;
+		break;
 	default:
 		return DRM_ERR(EINVAL);
 	}
diff --git a/shared/mga_dma.c b/shared/mga_dma.c
index 5e95c9f9..96fd97ff 100644
--- a/shared/mga_dma.c
+++ b/shared/mga_dma.c
@@ -642,9 +642,12 @@ int mga_do_cleanup_dma( drm_device_t *dev )
 	if ( dev->dev_private ) {
 		drm_mga_private_t *dev_priv = dev->dev_private;
 
-		DRM_IOREMAPFREE( dev_priv->warp );
-		DRM_IOREMAPFREE( dev_priv->primary );
-		DRM_IOREMAPFREE( dev_priv->buffers );
+		if ( dev_priv->warp != NULL )
+			DRM_IOREMAPFREE( dev_priv->warp );
+		if ( dev_priv->primary != NULL )
+			DRM_IOREMAPFREE( dev_priv->primary );
+		if ( dev_priv->buffers != NULL )
+			DRM_IOREMAPFREE( dev_priv->buffers );
 
 		if ( dev_priv->head != NULL ) {
 			mga_freelist_cleanup( dev );
diff --git a/shared/r128_cce.c b/shared/r128_cce.c
index 7f0f4325..ad03f4f9 100644
--- a/shared/r128_cce.c
+++ b/shared/r128_cce.c
@@ -619,9 +619,12 @@ int r128_do_cleanup_cce( drm_device_t *dev )
 #if __REALLY_HAVE_SG
 		if ( !dev_priv->is_pci ) {
 #endif
-			DRM_IOREMAPFREE( dev_priv->cce_ring );
-			DRM_IOREMAPFREE( dev_priv->ring_rptr );
-			DRM_IOREMAPFREE( dev_priv->buffers );
+			if ( dev_priv->cce_ring != NULL )
+				DRM_IOREMAPFREE( dev_priv->cce_ring );
+			if ( dev_priv->ring_rptr != NULL )
+				DRM_IOREMAPFREE( dev_priv->ring_rptr );
+			if ( dev_priv->buffers != NULL )
+				DRM_IOREMAPFREE( dev_priv->buffers );
 #if __REALLY_HAVE_SG
 		} else {
 			if (!DRM(ati_pcigart_cleanup)( dev,
diff --git a/shared/radeon.h b/shared/radeon.h
index d465773e..7e75e69d 100644
--- a/shared/radeon.h
+++ b/shared/radeon.h
@@ -78,6 +78,7 @@
  *       Added packets R200_EMIT_PP_CUBIC_FACES_[0..5] and
  *       R200_EMIT_PP_CUBIC_OFFSETS_[0..5].  (brian)
  * 1.8 - Remove need to call cleanup ioctls on last client exit (keith)
+ *       Add 'GET' queries for starting additional clients on different VT's.
  */
 #define DRIVER_IOCTLS							     \
  [DRM_IOCTL_NR(DRM_IOCTL_DMA)]               = { radeon_cp_buffers,  1, 0 }, \
diff --git a/shared/radeon_cp.c b/shared/radeon_cp.c
index 3ec8dfd1..fce148a0 100644
--- a/shared/radeon_cp.c
+++ b/shared/radeon_cp.c
@@ -36,12 +36,6 @@
 
 #define RADEON_FIFO_DEBUG	0
 
-#if defined(__alpha__) || defined(__powerpc__)
-# define PCIGART_ENABLED
-#else
-# undef PCIGART_ENABLED
-#endif
-
 
 /* CP microcode (from ATI) */
 static u32 R200_cp_microcode[][2] = {
@@ -777,7 +771,7 @@ static void radeon_do_cp_reset( drm_radeon_private_t *dev_priv )
 
 	cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 	RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
-	*dev_priv->ring.head = cur_read_ptr;
+	SET_RING_HEAD( dev_priv, cur_read_ptr );
 	dev_priv->ring.tail = cur_read_ptr;
 }
 
@@ -889,13 +883,18 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 	/* Initialize the ring buffer's read and write pointers */
 	cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 	RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
-	*dev_priv->ring.head = cur_read_ptr;
+	SET_RING_HEAD( dev_priv, cur_read_ptr );
 	dev_priv->ring.tail = cur_read_ptr;
 
+#if __REALLY_HAVE_AGP
 	if ( !dev_priv->is_pci ) {
 		RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
-			      dev_priv->ring_rptr->offset );
-	} else {
+			      dev_priv->ring_rptr->offset
+			      - dev->agp->base
+			      + dev_priv->agp_vm_start);
+	} else
+#endif
+	{
 		drm_sg_mem_t *entry = dev->sg;
 		unsigned long tmp_ofs, page_ofs;
 
@@ -920,7 +919,7 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 					 + RADEON_SCRATCH_REG_OFFSET );
 
 	dev_priv->scratch = ((__volatile__ u32 *)
-			     dev_priv->ring.head +
+			     dev_priv->ring_rptr->handle +
 			     (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
 
 	RADEON_WRITE( RADEON_SCRATCH_UMSK, 0x7 );
@@ -990,17 +989,6 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 
 	dev_priv->is_pci = init->is_pci;
 
-#if !defined(PCIGART_ENABLED)
-	/* PCI support is not 100% working, so we disable it here.
-	 */
-	if ( dev_priv->is_pci ) {
-		DRM_ERROR( "PCI GART not yet supported for Radeon!\n" );
-		dev->dev_private = (void *)dev_priv;
-		radeon_do_cleanup_cp(dev);
-		return DRM_ERR(EINVAL);
-	}
-#endif
-
 	if ( dev_priv->is_pci && !dev->sg ) {
 		DRM_ERROR( "PCI GART memory not allocated!\n" );
 		dev->dev_private = (void *)dev_priv;
@@ -1097,6 +1085,13 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 					 RADEON_ROUND_PREC_8TH_PIX);
 
 	DRM_GETSAREA();
+
+	dev_priv->fb_offset = init->fb_offset;
+	dev_priv->mmio_offset = init->mmio_offset;
+	dev_priv->ring_offset = init->ring_offset;
+	dev_priv->ring_rptr_offset = init->ring_rptr_offset;
+	dev_priv->buffers_offset = init->buffers_offset;
+	dev_priv->agp_textures_offset = init->agp_textures_offset;
 	
 	if(!dev_priv->sarea) {
 		DRM_ERROR("could not find sarea!\n");
@@ -1204,9 +1199,6 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 	DRM_DEBUG( "dev_priv->agp_buffers_offset 0x%lx\n",
 		   dev_priv->agp_buffers_offset );
 
-	dev_priv->ring.head = ((__volatile__ u32 *)
-			       dev_priv->ring_rptr->handle);
-
 	dev_priv->ring.start = (u32 *)dev_priv->cp_ring->handle;
 	dev_priv->ring.end = ((u32 *)dev_priv->cp_ring->handle
 			      + init->ring_size / sizeof(u32));
@@ -1217,7 +1209,6 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 		(dev_priv->ring.size / sizeof(u32)) - 1;
 
 	dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
-	dev_priv->ring.ring_rptr = dev_priv->ring_rptr;
 
 #if __REALLY_HAVE_SG
 	if ( dev_priv->is_pci ) {
@@ -1279,9 +1270,12 @@ int radeon_do_cleanup_cp( drm_device_t *dev )
 		drm_radeon_private_t *dev_priv = dev->dev_private;
 
 		if ( !dev_priv->is_pci ) {
-			DRM_IOREMAPFREE( dev_priv->cp_ring );
-			DRM_IOREMAPFREE( dev_priv->ring_rptr );
-			DRM_IOREMAPFREE( dev_priv->buffers );
+			if ( dev_priv->cp_ring != NULL )
+				DRM_IOREMAPFREE( dev_priv->cp_ring );
+			if ( dev_priv->ring_rptr != NULL )
+				DRM_IOREMAPFREE( dev_priv->ring_rptr );
+			if ( dev_priv->buffers != NULL )
+				DRM_IOREMAPFREE( dev_priv->buffers );
 		} else {
 #if __REALLY_HAVE_SG
 			if (!DRM(ati_pcigart_cleanup)( dev,
@@ -1592,10 +1586,10 @@ int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n )
 {
 	drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
 	int i;
-	u32 last_head = GET_RING_HEAD(ring);
+	u32 last_head = GET_RING_HEAD( dev_priv );
 
 	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
-		u32 head = GET_RING_HEAD(ring);
+		u32 head = GET_RING_HEAD( dev_priv );
 
 		ring->space = (head - ring->tail) * sizeof(u32);
 		if ( ring->space <= 0 )
diff --git a/shared/radeon_drm.h b/shared/radeon_drm.h
index b280eae5..7efb3c16 100644
--- a/shared/radeon_drm.h
+++ b/shared/radeon_drm.h
@@ -526,6 +526,10 @@ typedef struct drm_radeon_indirect {
 #define RADEON_PARAM_LAST_CLEAR            4
 #define RADEON_PARAM_IRQ_NR                5
 #define RADEON_PARAM_AGP_BASE              6 /* card offset of agp base */
+#define RADEON_PARAM_REGISTER_HANDLE       7 /* for drmMap() */
+#define RADEON_PARAM_STATUS_HANDLE         8
+#define RADEON_PARAM_SAREA_HANDLE          9
+#define RADEON_PARAM_AGP_TEX_HANDLE        10
 
 typedef struct drm_radeon_getparam {
 	int param;
diff --git a/shared/radeon_drv.h b/shared/radeon_drv.h
index 6d70576d..f79cc6da 100644
--- a/shared/radeon_drv.h
+++ b/shared/radeon_drv.h
@@ -31,8 +31,8 @@
 #ifndef __RADEON_DRV_H__
 #define __RADEON_DRV_H__
 
-#define GET_RING_HEAD(ring)		DRM_READ32(  (ring)->ring_rptr, 0 ) /* (ring)->head */
-#define SET_RING_HEAD(ring,val)		DRM_WRITE32( (ring)->ring_rptr, 0, (val) ) /* (ring)->head */
+#define GET_RING_HEAD(dev_priv)		DRM_READ32(  (dev_priv)->ring_rptr, 0 )
+#define SET_RING_HEAD(dev_priv,val)	DRM_WRITE32( (dev_priv)->ring_rptr, 0, (val) )
 
 typedef struct drm_radeon_freelist {
    	unsigned int age;
@@ -47,13 +47,11 @@ typedef struct drm_radeon_ring_buffer {
 	int size;
 	int size_l2qw;
 
-	volatile u32 *head;
 	u32 tail;
 	u32 tail_mask;
 	int space;
 
 	int high_mark;
-	drm_local_map_t *ring_rptr;
 } drm_radeon_ring_buffer_t;
 
 typedef struct drm_radeon_depth_clear_t {
@@ -126,6 +124,13 @@ typedef struct drm_radeon_private {
 	u32 depth_pitch_offset;
 
 	drm_radeon_depth_clear_t depth_clear;
+	
+	unsigned long fb_offset;
+	unsigned long mmio_offset;
+	unsigned long ring_offset;
+	unsigned long ring_rptr_offset;
+	unsigned long buffers_offset;
+	unsigned long agp_textures_offset;
 
 	drm_local_map_t *sarea;
 	drm_local_map_t *fb;
@@ -776,7 +781,7 @@ extern int RADEON_READ_PLL( drm_device_t *dev, int addr );
 #define RING_SPACE_TEST_WITH_RETURN( dev_priv )				\
 do {									\
 	if (!(dev_priv->stats.boxes & RADEON_BOX_DMA_IDLE)) {		\
-		u32 head = GET_RING_HEAD(&dev_priv->ring);		\
+		u32 head = GET_RING_HEAD( dev_priv );			\
 		if (head == dev_priv->ring.tail)			\
 			dev_priv->stats.boxes |= RADEON_BOX_DMA_IDLE;	\
 	}								\
@@ -848,8 +853,8 @@ do {									\
 
 #define COMMIT_RING() do {						\
 	/* Flush writes to ring */					\
-	DRM_READMEMORYBARRIER(dev_priv->mmio);					\
-	GET_RING_HEAD( &dev_priv->ring );				\
+	DRM_READMEMORYBARRIER( dev_priv->mmio );			\
+	GET_RING_HEAD( dev_priv );					\
 	RADEON_WRITE( RADEON_CP_RB_WPTR, dev_priv->ring.tail );		\
 	/* read from PCI bus to ensure correct posting */		\
 	RADEON_READ( RADEON_CP_RB_RPTR );				\
diff --git a/shared/radeon_state.c b/shared/radeon_state.c
index 86cbead5..8e9485a7 100644
--- a/shared/radeon_state.c
+++ b/shared/radeon_state.c
@@ -2191,6 +2191,19 @@ int radeon_cp_getparam( DRM_IOCTL_ARGS )
 	case RADEON_PARAM_AGP_BASE:
 		value = dev_priv->agp_vm_start;
 		break;
+	case RADEON_PARAM_REGISTER_HANDLE:
+		value = dev_priv->mmio_offset;
+		break;
+	case RADEON_PARAM_STATUS_HANDLE:
+		value = dev_priv->ring_rptr_offset;
+		break;
+	case RADEON_PARAM_SAREA_HANDLE:
+		/* The lock is the first dword in the sarea. */
+		value = (int)dev->lock.hw_lock; 
+		break;	
+	case RADEON_PARAM_AGP_TEX_HANDLE:
+		value = dev_priv->agp_textures_offset;
+		break;
 	default:
 		return DRM_ERR(EINVAL);
 	}