- Clean up the way customization of the templates is done.

- Fix old-style DMA for gamma driver (please test).
- Pull out IRQ handling into drm_dma.h (please test on i810, gamma).
- Lots of general cleanups, remove compiler warnings etc.

52 files changed, 1565 insertions, 1627 deletions

diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 58d98f50..4032689a 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -83,15 +83,24 @@
 #ifndef __HAVE_MTRR
 #define __HAVE_MTRR		0
 #endif
+#ifndef __HAVE_CTX_BITMAP
+#define __HAVE_CTX_BITMAP	0
+#endif
 #ifndef __HAVE_DMA
 #define __HAVE_DMA		0
 #endif
+#ifndef __HAVE_DMA_IRQ
+#define __HAVE_DMA_IRQ		0
+#endif
 #ifndef __HAVE_DMA_WAITLIST
 #define __HAVE_DMA_WAITLIST	0
 #endif
 #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)))
@@ -103,7 +112,6 @@
 
 #define DRM_DEBUG_CODE 2	  /* Include debugging code (if > 1, then
 				     also include looping detection. */
-#define DRM_DMA_HISTOGRAM 1	  /* Make histogram of DMA latency. */
 
 #define DRM_HASH_SIZE	      16 /* Size of key hash table		  */
 #define DRM_KERNEL_CONTEXT    0	 /* Change drm_resctx if changed	  */
@@ -627,7 +635,7 @@ typedef struct drm_device {
 	struct tq_struct  tq;
 	cycles_t	  ctx_start;
 	cycles_t	  lck_start;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	drm_histogram_t	  histo;
 #endif
 
@@ -651,9 +659,11 @@ typedef struct drm_device {
 } drm_device_t;
 
 
-				/* Internal function definitions */
+/* ================================================================
+ * Internal function definitions
+ */
 
-				/* Misc. support (init.c) */
+				/* Misc. support (drm_init.h) */
 extern int	     DRM(flags);
 extern void	     DRM(parse_options)( char *s );
 extern int           DRM(cpu_valid)( void );
@@ -670,7 +680,7 @@ extern int           DRM(lock)(struct inode *inode, struct file *filp,
 extern int           DRM(unlock)(struct inode *inode, struct file *filp,
 				 unsigned int cmd, unsigned long arg);
 
-				/* Device support (fops.c) */
+				/* Device support (drm_fops.h) */
 extern int	     DRM(open_helper)(struct inode *inode, struct file *filp,
 				      drm_device_t *dev);
 extern int	     DRM(flush)(struct file *filp);
@@ -682,7 +692,7 @@ 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 (vm.c) */
+				/* Mapping support (drm_vm.h) */
 #if LINUX_VERSION_CODE < 0x020317
 extern unsigned long DRM(vm_nopage)(struct vm_area_struct *vma,
 				    unsigned long address,
@@ -717,17 +727,7 @@ extern int	     DRM(mmap_dma)(struct file *filp,
 				   struct vm_area_struct *vma);
 extern int	     DRM(mmap)(struct file *filp, struct vm_area_struct *vma);
 
-
-				/* Proc support (proc.c) */
-extern struct proc_dir_entry *drm_proc_init(drm_device_t *dev,
-					    int minor,
-					    struct proc_dir_entry *root,
-					    struct proc_dir_entry **dev_root);
-extern int          drm_proc_cleanup(int minor,
-                                     struct proc_dir_entry *root,
-                                     struct proc_dir_entry *dev_root);
-
-				/* Memory management support (memory.c) */
+				/* Memory management support (drm_memory.h) */
 extern void	     DRM(mem_init)(void);
 extern int	     DRM(mem_info)(char *buf, char **start, off_t offset,
 				   int request, int *eof, void *data);
@@ -750,7 +750,7 @@ extern int           DRM(bind_agp)(agp_memory *handle, unsigned int start);
 extern int           DRM(unbind_agp)(agp_memory *handle);
 #endif
 
-				/* Misc. IOCTL support (ioctl.c) */
+				/* Misc. IOCTL support (drm_ioctl.h) */
 extern int	     DRM(irq_busid)(struct inode *inode, struct file *filp,
 				    unsigned int cmd, unsigned long arg);
 extern int	     DRM(getunique)(struct inode *inode, struct file *filp,
@@ -764,7 +764,7 @@ extern int	     DRM(getclient)(struct inode *inode, struct file *filp,
 extern int	     DRM(getstats)(struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg);
 
-				/* Context IOCTL support (context.c) */
+				/* Context IOCTL support (drm_context.h) */
 extern int	     DRM(resctx)( struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg );
 extern int	     DRM(addctx)( struct inode *inode, struct file *filp,
@@ -783,14 +783,19 @@ extern int	     DRM(rmctx)( struct inode *inode, struct file *filp,
 extern int	     DRM(context_switch)(drm_device_t *dev, int old, int new);
 extern int	     DRM(context_switch_complete)(drm_device_t *dev, int new);
 
-				/* Drawable IOCTL support (drawable.c) */
+#if __HAVE_CTX_BITMAP
+extern int	     DRM(ctxbitmap_init)( drm_device_t *dev );
+extern void	     DRM(ctxbitmap_cleanup)( drm_device_t *dev );
+#endif
+
+				/* Drawable IOCTL support (drm_drawable.h) */
 extern int	     DRM(adddraw)(struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg);
 extern int	     DRM(rmdraw)(struct inode *inode, struct file *filp,
 				 unsigned int cmd, unsigned long arg);
 
 
-				/* Authentication IOCTL support (auth.c) */
+				/* Authentication IOCTL support (drm_auth.h) */
 extern int	     DRM(add_magic)(drm_device_t *dev, drm_file_t *priv,
 				    drm_magic_t magic);
 extern int	     DRM(remove_magic)(drm_device_t *dev, drm_magic_t magic);
@@ -800,7 +805,7 @@ extern int	     DRM(authmagic)(struct inode *inode, struct file *filp,
 				    unsigned int cmd, unsigned long arg);
 
 
-				/* Locking IOCTL support (lock.c) */
+				/* 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,
@@ -821,17 +826,11 @@ extern int	     DRM(flush_block_and_flush)(drm_device_t *dev, int context,
 						drm_lock_flags_t flags);
 extern int           DRM(notifier)(void *priv);
 
-				/* Context Bitmap support (ctxbitmap.c) */
-extern int	     DRM(ctxbitmap_init)( drm_device_t *dev );
-extern void	     DRM(ctxbitmap_cleanup)( drm_device_t *dev );
-
-
-
-
-				/* Buffer management support (bufs.c) */
+				/* Buffer management support (drm_bufs.h) */
 extern int	     DRM(order)( unsigned long size );
 extern int	     DRM(addmap)( struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg );
+#if __HAVE_DMA
 extern int	     DRM(addbufs)( struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg );
 extern int	     DRM(infobufs)( struct inode *inode, struct file *filp,
@@ -843,27 +842,37 @@ extern int	     DRM(freebufs)( struct inode *inode, struct file *filp,
 extern int	     DRM(mapbufs)( struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg );
 
-
-#if __HAVE_DMA
-				/* DMA support (dma.c) */
+				/* DMA support (drm_dma.h) */
 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)(drm_device_t *dev, pid_t pid);
+#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)(drm_device_t *dev, drm_dma_t *dma);
-#if 0
 extern int	     DRM(dma_get_buffers)(drm_device_t *dev, 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 );
+extern int           DRM(irq_install)( drm_device_t *dev, int irq );
+extern int           DRM(irq_uninstall)( drm_device_t *dev );
+extern void          DRM(dma_service)( int irq, void *device,
+				       struct pt_regs *regs );
+#if __HAVE_DMA_IRQ_BH
+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
-#endif
 
-				/* Buffer list management support (lists.c) */
+				/* 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);
@@ -877,9 +886,10 @@ 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
-				/* AGP/GART support (agpsupport.c) */
+				/* AGP/GART support (drm_agpsupport.h) */
 extern drm_agp_head_t *DRM(agp_init)(void);
 extern void           DRM(agp_uninit)(void);
 extern int            DRM(agp_acquire)(struct inode *inode, struct file *filp,
@@ -903,6 +913,7 @@ extern agp_memory     *DRM(agp_allocate_memory)(size_t pages, u32 type);
 extern int            DRM(agp_free_memory)(agp_memory *handle);
 extern int            DRM(agp_bind_memory)(agp_memory *handle, off_t start);
 extern int            DRM(agp_unbind_memory)(agp_memory *handle);
+#endif
 
 				/* Stub support (drm_stub.h) */
 int                   DRM(stub_register)(const char *name,
@@ -910,6 +921,14 @@ int                   DRM(stub_register)(const char *name,
 					 drm_device_t *dev);
 int                   DRM(stub_unregister)(int minor);
 
-#endif
-#endif
+				/* Proc support (drm_proc.h) */
+extern struct proc_dir_entry *DRM(proc_init)(drm_device_t *dev,
+					     int minor,
+					     struct proc_dir_entry *root,
+					     struct proc_dir_entry **dev_root);
+extern int            DRM(proc_cleanup)(int minor,
+					struct proc_dir_entry *root,
+					struct proc_dir_entry *dev_root);
+
+#endif /* __KERNEL__ */
 #endif
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c
index f2613a98..38ea1ff0 100644
--- a/linux-core/drm_bufs.c
+++ b/linux-core/drm_bufs.c
@@ -252,7 +252,7 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 		buf->order   = order;
 		buf->used    = 0;
 
-		buf->offset  = (dma->byte_count + offset); /* ******** */
+		buf->offset  = (dma->byte_count + offset);
 		buf->bus_address = agp_offset + offset;
 		buf->address = (void *)(agp_offset + offset);
 		buf->next    = NULL;
@@ -266,7 +266,7 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 					       DRM_MEM_BUFS );
 		memset( buf->dev_private, 0, buf->dev_priv_size );
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 		buf->time_queued = 0;
 		buf->time_dispatched = 0;
 		buf->time_completed = 0;
@@ -297,17 +297,12 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 	DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
 	DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
 
-/* GH: Please leave this disabled for now.  I need to fix this properly...
- */
-#if 0
-	/* FIXME: work this mess out...
-	 */
+#if __HAVE_DMA_FREELIST
 	DRM(freelist_create)( &entry->freelist, entry->buf_count );
 	for ( i = 0 ; i < entry->buf_count ; i++ ) {
 		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
 	}
 #endif
-
 	up( &dev->struct_sem );
 
 	request.count = entry->buf_count;
@@ -443,11 +438,11 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
 			buf->pending = 0;
 			init_waitqueue_head( &buf->dma_wait );
 			buf->pid     = 0;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 			buf->time_queued     = 0;
 			buf->time_dispatched = 0;
 			buf->time_completed  = 0;
-			buf->time_freed	     = 0;
+			buf->time_freed      = 0;
 #endif
 			DRM_DEBUG( "buffer %d @ %p\n",
 				   entry->buf_count, buf->address );
@@ -469,17 +464,12 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
 	dma->page_count += entry->seg_count << page_order;
 	dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
 
-/* GH: Please leave this disabled for now.  I need to fix this properly...
- */
-#if 0
-	/* FIXME: work this mess out...
-	 */
+#if __HAVE_DMA_FREELIST
 	DRM(freelist_create)( &entry->freelist, entry->buf_count );
 	for ( i = 0 ; i < entry->buf_count ; i++ ) {
 		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
 	}
 #endif
-
 	up( &dev->struct_sem );
 
 	request.count = entry->buf_count;
diff --git a/linux-core/drm_context.c b/linux-core/drm_context.c
index 6bbcfca8..e2b6170a 100644
--- a/linux-core/drm_context.c
+++ b/linux-core/drm_context.c
@@ -29,6 +29,11 @@
  *    Gareth Hughes <gareth@valinux.com>
  */
 
+#define __NO_VERSION__
+#include "drmP.h"
+
+#if __HAVE_CTX_BITMAP
+
 /* ================================================================
  * Context bitmap support
  */
@@ -98,7 +103,7 @@ int DRM(context_switch)( drm_device_t *dev, int old, int new )
                 return -EBUSY;
         }
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         dev->ctx_start = get_cycles();
 #endif
 
@@ -131,7 +136,7 @@ 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 DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         atomic_inc( &dev->histo.ctx[DRM(histogram_slot)(get_cycles()
 							- dev->ctx_start)] );
 
@@ -268,3 +273,376 @@ 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 = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES);
+	memset(queue, 0, sizeof(*queue));
+	atomic_set(&queue->use_count, 1);
+
+	++dev->queue_count;
+	if (dev->queue_count >= dev->queue_slots) {
+		oldslots = dev->queue_slots * sizeof(*dev->queuelist);
+		if (!dev->queue_slots) dev->queue_slots = 1;
+		dev->queue_slots *= 2;
+		newslots = dev->queue_slots * sizeof(*dev->queuelist);
+
+		dev->queuelist = DRM(realloc)(dev->queuelist,
+					      oldslots,
+					      newslots,
+					      DRM_MEM_QUEUES);
+		if (!dev->queuelist) {
+			up(&dev->struct_sem);
+			DRM_DEBUG("out of memory\n");
+			return -ENOMEM;
+		}
+	}
+	dev->queuelist[dev->queue_count-1] = queue;
+
+	up(&dev->struct_sem);
+	DRM_DEBUG("%d (new)\n", dev->queue_count - 1);
+	return dev->queue_count - 1;
+}
+
+int DRM(resctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_ctx_res_t	res;
+	drm_ctx_t	ctx;
+	int		i;
+
+	DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
+	if (copy_from_user(&res, (drm_ctx_res_t *)arg, sizeof(res)))
+		return -EFAULT;
+	if (res.count >= DRM_RESERVED_CONTEXTS) {
+		memset(&ctx, 0, sizeof(ctx));
+		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
+			ctx.handle = i;
+			if (copy_to_user(&res.contexts[i],
+					 &i,
+					 sizeof(i)))
+				return -EFAULT;
+		}
+	}
+	res.count = DRM_RESERVED_CONTEXTS;
+	if (copy_to_user((drm_ctx_res_t *)arg, &res, sizeof(res)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(addctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	if ((ctx.handle = DRM(alloc_queue)(dev)) == DRM_KERNEL_CONTEXT) {
+				/* Init kernel's context and get a new one. */
+		DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+		ctx.handle = DRM(alloc_queue)(dev);
+	}
+	DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+	DRM_DEBUG("%d\n", ctx.handle);
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(modctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle < 0 || ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	if (DRM_BUFCOUNT(&q->waitlist)) {
+		atomic_dec(&q->use_count);
+		return -EBUSY;
+	}
+
+	q->flags = ctx.flags;
+
+	atomic_dec(&q->use_count);
+	return 0;
+}
+
+int DRM(getctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	ctx.flags = q->flags;
+	atomic_dec(&q->use_count);
+
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+
+	return 0;
+}
+
+int DRM(switchctx)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	return DRM(context_switch)(dev, dev->last_context, ctx.handle);
+}
+
+int DRM(newctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	DRM(context_switch_complete)(dev, ctx.handle);
+
+	return 0;
+}
+
+int DRM(rmctx)(struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+	drm_buf_t	*buf;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	atomic_inc(&q->finalization); /* Mark queue in finalization state */
+	atomic_sub(2, &q->use_count); /* Mark queue as unused (pending
+					 finalization) */
+
+	while (test_and_set_bit(0, &dev->interrupt_flag)) {
+		schedule();
+		if (signal_pending(current)) {
+			clear_bit(0, &dev->interrupt_flag);
+			return -EINTR;
+		}
+	}
+				/* Remove queued buffers */
+	while ((buf = DRM(waitlist_get)(&q->waitlist))) {
+		DRM(free_buffer)(dev, buf);
+	}
+	clear_bit(0, &dev->interrupt_flag);
+
+				/* Wakeup blocked processes */
+	wake_up_interruptible(&q->read_queue);
+	wake_up_interruptible(&q->write_queue);
+	wake_up_interruptible(&q->flush_queue);
+
+				/* Finalization over.  Queue is made
+				   available when both use_count and
+				   finalization become 0, which won't
+				   happen until all the waiting processes
+				   stop waiting. */
+	atomic_dec(&q->finalization);
+	return 0;
+}
+
+#endif /* __HAVE_CTX_BITMAP */
diff --git a/linux-core/drm_dma.c b/linux-core/drm_dma.c
index 35eb896e..e715bd41 100644
--- a/linux-core/drm_dma.c
+++ b/linux-core/drm_dma.c
@@ -118,7 +118,7 @@ void DRM(dma_takedown)(drm_device_t *dev)
 }
 
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 /* This is slow, but is useful for debugging. */
 int DRM(histogram_slot)(unsigned long count)
 {
@@ -182,7 +182,7 @@ void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf)
 	buf->pending  = 0;
 	buf->pid      = 0;
 	buf->used     = 0;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	buf->time_completed = get_cycles();
 #endif
 
@@ -231,85 +231,6 @@ void DRM(reclaim_buffers)(drm_device_t *dev, pid_t pid)
  */
 #if __HAVE_OLD_DMA
 
-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 DRM_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 DRM_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;
-}
-
 void DRM(clear_next_buffer)(drm_device_t *dev)
 {
 	drm_device_dma_t *dma = dev->dma;
@@ -571,6 +492,103 @@ int DRM(dma_get_buffers)(drm_device_t *dev, drm_dma_t *dma)
 	return 0;
 }
 
-#endif
+#endif /* __HAVE_OLD_DMA */
+
+
+#if __HAVE_DMA_IRQ
+
+int DRM(irq_install)( drm_device_t *dev, int irq )
+{
+	int ret;
+
+	if ( !irq )
+		return -EINVAL;
+
+	down( &dev->struct_sem );
+	if ( dev->irq ) {
+		up( &dev->struct_sem );
+		return -EBUSY;
+	}
+	dev->irq = irq;
+	up( &dev->struct_sem );
+
+	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq );
+
+	dev->context_flag = 0;
+	dev->interrupt_flag = 0;
+	dev->dma_flag = 0;
+
+	dev->dma->next_buffer = NULL;
+	dev->dma->next_queue = NULL;
+	dev->dma->this_buffer = NULL;
 
+#if __HAVE_DMA_IRQ_BH
+	INIT_LIST_HEAD( &dev->tq.list );
+	dev->tq.sync = 0;
+	dev->tq.routine = DRM(dma_immediate_bh);
+	dev->tq.data = dev;
 #endif
+
+				/* Before installing handler */
+	DRIVER_PREINSTALL();
+
+				/* Install handler */
+	ret = request_irq( dev->irq, DRM(dma_service),
+			   0, dev->devname, dev );
+	if ( ret < 0 ) {
+		down( &dev->struct_sem );
+		dev->irq = 0;
+		up( &dev->struct_sem );
+		return ret;
+	}
+
+				/* After installing handler */
+	DRIVER_POSTINSTALL();
+
+	return 0;
+}
+
+int DRM(irq_uninstall)( drm_device_t *dev )
+{
+	int irq;
+
+	down( &dev->struct_sem );
+	irq = dev->irq;
+	dev->irq = 0;
+	up( &dev->struct_sem );
+
+	if ( !irq )
+		return -EINVAL;
+
+	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq );
+
+	DRIVER_UNINSTALL();
+
+	free_irq( irq, dev );
+
+	return 0;
+}
+
+int DRM(control)( 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_control_t ctl;
+
+	if ( copy_from_user( &ctl, (drm_control_t *)arg, sizeof(ctl) ) )
+		return -EFAULT;
+
+	switch ( ctl.func ) {
+	case DRM_INST_HANDLER:
+		return DRM(irq_install)( dev, ctl.irq );
+	case DRM_UNINST_HANDLER:
+		return DRM(irq_uninstall)( dev );
+	default:
+		return -EINVAL;
+	}
+}
+
+#endif /* __HAVE_DMA_IRQ */
+
+#endif /* __HAVE_DMA */
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index b24d213e..71f52276 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -687,7 +687,7 @@ int DRM(release)( struct inode *inode, struct file *filp )
 					DRM_KERNEL_CONTEXT );
 		}
 	}
-#else
+#elif __HAVE_DMA
 	DRM(reclaim_buffers)( dev, priv->pid );
 #endif
 
@@ -794,7 +794,7 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 #if __HAVE_MULTIPLE_DMA_QUEUES
 	drm_queue_t *q;
 #endif
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         cycles_t start;
 
         dev->lck_start = start = get_cycles();
@@ -882,7 +882,7 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 
         DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]);
 #endif
         return ret;
diff --git a/linux-core/drm_fops.c b/linux-core/drm_fops.c
index d646f318..dd574766 100644
--- a/linux-core/drm_fops.c
+++ b/linux-core/drm_fops.c
@@ -83,50 +83,6 @@ int DRM(flush)(struct file *filp)
 	return 0;
 }
 
-#if 0
-/* drm_release is called whenever a process closes /dev/drm*.  Linux calls
-   this only if any mappings have been closed. */
-
-int drm_release(struct inode *inode, struct file *filp)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-
-	DRM_DEBUG("pid = %d, device = 0x%x, open_count = %d\n",
-		  current->pid, dev->device, dev->open_count);
-
-	if (dev->lock.hw_lock
-	    && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
-	    && dev->lock.pid == current->pid) {
-		DRM_ERROR("Process %d dead, freeing lock for context %d\n",
-			  current->pid,
-			  _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
-		drm_lock_free(dev,
-			      &dev->lock.hw_lock->lock,
-			      _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
-
-				/* FIXME: may require heavy-handed reset of
-                                   hardware at this point, possibly
-                                   processed via a callback to the X
-                                   server. */
-	}
-	drm_reclaim_buffers(dev, priv->pid);
-
-	drm_fasync(-1, filp, 0);
-
-	down(&dev->struct_sem);
-	if (priv->prev) priv->prev->next = priv->next;
-	else		dev->file_first	 = priv->next;
-	if (priv->next) priv->next->prev = priv->prev;
-	else		dev->file_last	 = priv->prev;
-	up(&dev->struct_sem);
-
-	drm_free(priv, sizeof(*priv), DRM_MEM_FILES);
-
-	return 0;
-}
-#endif
-
 int DRM(fasync)(int fd, struct file *filp, int on)
 {
 	drm_file_t    *priv   = filp->private_data;
diff --git a/linux-core/drm_proc.c b/linux-core/drm_proc.c
index 634673d9..ee9c0cbc 100644
--- a/linux-core/drm_proc.c
+++ b/linux-core/drm_proc.c
@@ -50,7 +50,7 @@ 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 DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 static int	   DRM(histo_info)(char *buf, char **start, off_t offset,
 				   int request, int *eof, void *data);
 #endif
@@ -68,7 +68,7 @@ struct drm_proc_list {
 #if DRM_DEBUG_CODE
 	{ "vma",     DRM(vma_info)     },
 #endif
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	{ "histo",   DRM(histo_info)   },
 #endif
 };
@@ -481,7 +481,7 @@ static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
 #endif
 
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 static int DRM(_histo_info)(char *buf, char **start, off_t offset, int request,
 			    int *eof, void *data)
 {
diff --git a/linux-core/drm_stub.c b/linux-core/drm_stub.c
index ed37af4d..a6a39d86 100644
--- a/linux-core/drm_stub.c
+++ b/linux-core/drm_stub.c
@@ -1,4 +1,4 @@
-/* drm_stub.c -- -*- linux-c -*-
+/* drm_stub.h -- -*- linux-c -*-
  * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
  *
  * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
@@ -28,6 +28,9 @@
  *
  */
 
+#define __NO_VERSION__
+#include "drmP.h"
+
 #define DRM_STUB_MAXCARDS 16	/* Enough for one machine */
 
 static struct drm_stub_list {
@@ -58,7 +61,7 @@ static int DRM(stub_open)(struct inode *inode, struct file *filp)
 		filp->f_op = fops_get(old_fops);
 	}
 	fops_put(old_fops);
-		
+
 	return err;
 }
 
@@ -73,7 +76,7 @@ static int DRM(stub_getminor)(const char *name, struct file_operations *fops,
 			      drm_device_t *dev)
 {
 	int i;
-	
+
 	if (!DRM(stub_list)) {
 		DRM(stub_list) = DRM(alloc)(sizeof(*DRM(stub_list))
 					    * DRM_STUB_MAXCARDS, DRM_MEM_STUB);
diff --git a/linux-core/i810_dma.c b/linux-core/i810_dma.c
index 8585fef1..e27406a6 100644
--- a/linux-core/i810_dma.c
+++ b/linux-core/i810_dma.c
@@ -48,17 +48,6 @@
 #define I810_BUF_UNMAPPED 0
 #define I810_BUF_MAPPED   1
 
-#define I810_REG(reg)		2
-#define I810_BASE(reg)		((unsigned long) \
-				dev->maplist[I810_REG(reg)]->handle)
-#define I810_ADDR(reg)		(I810_BASE(reg) + reg)
-#define I810_DEREF(reg)		*(__volatile__ int *)I810_ADDR(reg)
-#define I810_READ(reg)		I810_DEREF(reg)
-#define I810_WRITE(reg,val) 	do { I810_DEREF(reg) = val; } while (0)
-#define I810_DEREF16(reg)	*(__volatile__ u16 *)I810_ADDR(reg)
-#define I810_READ16(reg)	I810_DEREF16(reg)
-#define I810_WRITE16(reg,val)	do { I810_DEREF16(reg) = val; } while (0)
-
 #define RING_LOCALS	unsigned int outring, ringmask; volatile char *virt;
 
 #define BEGIN_LP_RING(n) do {				\
@@ -873,7 +862,7 @@ static void i810_dma_dispatch_vertex(drm_device_t *dev,
 
 
 /* Interrupts are only for flushing */
-static void i810_dma_service(int irq, void *device, struct pt_regs *regs)
+void i810_dma_service(int irq, void *device, struct pt_regs *regs)
 {
 	drm_device_t	 *dev = (drm_device_t *)device;
    	u16 temp;
@@ -890,7 +879,7 @@ static void i810_dma_service(int irq, void *device, struct pt_regs *regs)
    	mark_bh(IMMEDIATE_BH);
 }
 
-static void i810_dma_task_queue(void *device)
+void i810_dma_immediate_bh(void *device)
 {
 	drm_device_t *dev = (drm_device_t *) device;
       	drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
@@ -899,129 +888,6 @@ static void i810_dma_task_queue(void *device)
    	wake_up_interruptible(&dev_priv->flush_queue);
 }
 
-int i810_irq_install(drm_device_t *dev, int irq)
-{
-	int retcode;
-	u16 temp;
-
-	if (!irq)     return -EINVAL;
-
-	down(&dev->struct_sem);
-	if (dev->irq) {
-		up(&dev->struct_sem);
-		return -EBUSY;
-	}
-	dev->irq = irq;
-	up(&dev->struct_sem);
-
-   	DRM_DEBUG(  "Interrupt Install : %d\n", irq);
-	DRM_DEBUG("%d\n", irq);
-
-	dev->context_flag     = 0;
-	dev->interrupt_flag   = 0;
-	dev->dma_flag	      = 0;
-
-	dev->dma->next_buffer = NULL;
-	dev->dma->next_queue  = NULL;
-	dev->dma->this_buffer = NULL;
-
-	INIT_LIST_HEAD(&dev->tq.list);
-	dev->tq.sync	      = 0;
-	dev->tq.routine	      = i810_dma_task_queue;
-	dev->tq.data	      = dev;
-
-				/* Before installing handler */
-   	temp = I810_READ16(I810REG_HWSTAM);
-   	temp = temp & 0x6000;
-   	I810_WRITE16(I810REG_HWSTAM, temp);
-
-      	temp = I810_READ16(I810REG_INT_MASK_R);
-   	temp = temp & 0x6000;
-   	I810_WRITE16(I810REG_INT_MASK_R, temp); /* Unmask interrupts */
-   	temp = I810_READ16(I810REG_INT_ENABLE_R);
-   	temp = temp & 0x6000;
-      	I810_WRITE16(I810REG_INT_ENABLE_R, temp); /* Disable all interrupts */
-
-				/* Install handler */
-	if ((retcode = request_irq(dev->irq,
-				   i810_dma_service,
-				   SA_SHIRQ,
-				   dev->devname,
-				   dev))) {
-		down(&dev->struct_sem);
-		dev->irq = 0;
-		up(&dev->struct_sem);
-		return retcode;
-	}
-   	temp = I810_READ16(I810REG_INT_ENABLE_R);
-   	temp = temp & 0x6000;
-   	temp = temp | 0x0003;
-   	I810_WRITE16(I810REG_INT_ENABLE_R,
-		     temp); /* Enable bp & user interrupts */
-	return 0;
-}
-
-int i810_irq_uninstall(drm_device_t *dev)
-{
-	int irq;
-   	u16 temp;
-
-
-/*  	return 0; */
-
-	down(&dev->struct_sem);
-	irq	 = dev->irq;
-	dev->irq = 0;
-	up(&dev->struct_sem);
-
-	if (!irq) return -EINVAL;
-
-   	DRM_DEBUG(  "Interrupt UnInstall: %d\n", irq);
-	DRM_DEBUG("%d\n", irq);
-
-   	temp = I810_READ16(I810REG_INT_IDENTITY_R);
-   	temp = temp & ~(0x6000);
-   	if(temp != 0) I810_WRITE16(I810REG_INT_IDENTITY_R,
-				   temp); /* Clear all interrupts */
-
-   	temp = I810_READ16(I810REG_INT_ENABLE_R);
-   	temp = temp & 0x6000;
-   	I810_WRITE16(I810REG_INT_ENABLE_R,
-		     temp);                     /* Disable all interrupts */
-
-   	free_irq(irq, dev);
-
-	return 0;
-}
-
-int i810_control(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_control_t	ctl;
-	int		retcode;
-
-   	DRM_DEBUG(  "i810_control\n");
-
-	if (copy_from_user(&ctl, (drm_control_t *)arg, sizeof(ctl)))
-		return -EFAULT;
-
-	switch (ctl.func) {
-	case DRM_INST_HANDLER:
-		if ((retcode = i810_irq_install(dev, ctl.irq)))
-			return retcode;
-		break;
-	case DRM_UNINST_HANDLER:
-		if ((retcode = i810_irq_uninstall(dev)))
-			return retcode;
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
 static inline void i810_dma_emit_flush(drm_device_t *dev)
 {
    	drm_i810_private_t *dev_priv = dev->dev_private;
diff --git a/linux-core/i810_drv.c b/linux-core/i810_drv.c
index 635bdc6d..12a59dbf 100644
--- a/linux-core/i810_drv.c
+++ b/linux-core/i810_drv.c
@@ -56,47 +56,26 @@
    	[DRM_IOCTL_NR(DRM_IOCTL_I810_COPY)]   = { i810_copybuf,     1, 0 }, \
    	[DRM_IOCTL_NR(DRM_IOCTL_I810_DOCOPY)] = { i810_docopy,      1, 0 },
 
+
 #define __HAVE_COUNTERS         4
 #define __HAVE_COUNTER6         _DRM_STAT_IRQ
 #define __HAVE_COUNTER7         _DRM_STAT_PRIMARY
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 #define __HAVE_COUNTER9         _DRM_STAT_DMA
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT() do {					\
-	i810_dma_quiescent( dev );					\
-} while (0)
-
-#define __HAVE_RELEASE		1
-#define DRIVER_RELEASE() do {						\
-	i810_reclaim_buffers( dev, priv->pid );				\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_i810_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-({									\
-	drm_i810_private_t *dev_priv = (dev)->dev_private;		\
-	drm_map_t *map = (dev)->maplist[dev_priv->buffer_map_idx];	\
-	map;								\
-})
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
 #include "drm_lock.h"
-#include "drm_lists.h"		/* kw: added for i810_waitlist_destroy */
+#include "drm_lists.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux-core/i810_drv.h b/linux-core/i810_drv.h
index e7824093..43d44e02 100644
--- a/linux-core/i810_drv.h
+++ b/linux-core/i810_drv.h
@@ -80,12 +80,6 @@ typedef struct drm_i810_private {
 extern int  i810_dma_schedule(drm_device_t *dev, int locked);
 extern int  i810_getbuf(struct inode *inode, struct file *filp,
 			unsigned int cmd, unsigned long arg);
-extern int  i810_irq_install(drm_device_t *dev, int irq);
-extern int  i810_irq_uninstall(drm_device_t *dev);
-extern int  i810_control(struct inode *inode, struct file *filp,
-			  unsigned int cmd, unsigned long arg);
-extern int  i810_lock(struct inode *inode, struct file *filp,
-		       unsigned int cmd, unsigned long arg);
 extern int  i810_dma_init(struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg);
 extern int  i810_flush_ioctl(struct inode *inode, struct file *filp,
@@ -113,6 +107,19 @@ int i810_swap_bufs(struct inode *inode, struct file *filp,
 int i810_clear_bufs(struct inode *inode, struct file *filp,
 		    unsigned int cmd, unsigned long arg);
 
+
+#define I810_REG(reg)		2
+#define I810_BASE(reg)		((unsigned long) \
+				dev->maplist[I810_REG(reg)]->handle)
+#define I810_ADDR(reg)		(I810_BASE(reg) + reg)
+#define I810_DEREF(reg)		*(__volatile__ int *)I810_ADDR(reg)
+#define I810_READ(reg)		I810_DEREF(reg)
+#define I810_WRITE(reg,val) 	do { I810_DEREF(reg) = val; } while (0)
+#define I810_DEREF16(reg)	*(__volatile__ u16 *)I810_ADDR(reg)
+#define I810_READ16(reg)	I810_DEREF16(reg)
+#define I810_WRITE16(reg,val)	do { I810_DEREF16(reg) = val; } while (0)
+
+
 #define GFX_OP_USER_INTERRUPT 		((0<<29)|(2<<23))
 #define GFX_OP_BREAKPOINT_INTERRUPT	((0<<29)|(1<<23))
 #define CMD_REPORT_HEAD			(7<<23)
diff --git a/linux-core/mga_drv.c b/linux-core/mga_drv.c
index 7898c744..88fa53a6 100644
--- a/linux-core/mga_drv.c
+++ b/linux-core/mga_drv.c
@@ -38,7 +38,7 @@
 
 #define DRIVER_NAME		"mga"
 #define DRIVER_DESC		"Matrox G200/G400"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		3
 #define DRIVER_MINOR		0
@@ -56,38 +56,20 @@
 	[DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)]   = { mga_dma_iload,   1, 0 }, \
 	[DRM_IOCTL_NR(DRM_IOCTL_MGA_BLIT)]    = { mga_dma_blit,    1, 0 },
 
+
 #define __HAVE_COUNTERS         3
 #define __HAVE_COUNTER6         _DRM_STAT_IRQ
 #define __HAVE_COUNTER7         _DRM_STAT_PRIMARY
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT()						\
-do {									\
-	drm_mga_private_t *dev_priv = dev->dev_private;			\
-	return mga_do_wait_for_idle( dev_priv );			\
-} while (0)
-
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) mga_do_cleanup_dma( dev );		\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_mga_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-	((drm_mga_private_t *)((dev)->dev_private))->buffers
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux-core/r128_drv.c b/linux-core/r128_drv.c
index 3bd27ae7..e42868ed 100644
--- a/linux-core/r128_drv.c
+++ b/linux-core/r128_drv.c
@@ -38,7 +38,7 @@
 
 #define DRIVER_NAME		"r128"
 #define DRIVER_DESC		"ATI Rage 128"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		2
 #define DRIVER_MINOR		1
@@ -62,6 +62,7 @@
    [DRM_IOCTL_NR(DRM_IOCTL_R128_STIPPLE)]    = { r128_cce_stipple,  1, 0 }, \
    [DRM_IOCTL_NR(DRM_IOCTL_R128_INDIRECT)]   = { r128_cce_indirect, 1, 1 },
 
+
 #if 0
 /* GH: Count data sent to card via ring or vertex/indirect buffers.
  */
@@ -71,41 +72,14 @@
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 #endif
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT() do {					\
-	drm_r128_private_t *dev_priv = dev->dev_private;		\
-	return r128_do_cce_idle( dev_priv );				\
-} while (0)
-
-#define DRIVER_PRERELEASE() do {					\
-	if ( dev->dev_private ) {					\
-		drm_r128_private_t *dev_priv = dev->dev_private;	\
-		if ( dev_priv->page_flipping ) {			\
-			r128_do_cleanup_pageflip( dev );		\
-		}							\
-	}								\
-} while (0)
-
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) r128_do_cleanup_cce( dev );		\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_r128_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-	((drm_r128_private_t *)((dev)->dev_private))->buffers
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux-core/radeon_drv.c b/linux-core/radeon_drv.c
index 43f6e2e7..cf59f866 100644
--- a/linux-core/radeon_drv.c
+++ b/linux-core/radeon_drv.c
@@ -36,7 +36,7 @@
 
 #define DRIVER_NAME		"radeon"
 #define DRIVER_DESC		"ATI Radeon"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		1
 #define DRIVER_MINOR		0
@@ -59,6 +59,7 @@
  [DRM_IOCTL_NR(DRM_IOCTL_RADEON_STIPPLE)]    = { radeon_cp_stipple,  1, 0 }, \
  [DRM_IOCTL_NR(DRM_IOCTL_RADEON_INDIRECT)]   = { radeon_cp_indirect, 1, 1 },
 
+
 #if 0
 /* GH: Count data sent to card via ring or vertex/indirect buffers.
  */
@@ -68,41 +69,14 @@
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 #endif
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT() do {					\
-	drm_radeon_private_t *dev_priv = dev->dev_private;		\
-	return radeon_do_cp_idle( dev_priv );				\
-} while (0)
-
-#define DRIVER_PRERELEASE() do {					\
-	if ( dev->dev_private ) {					\
-		drm_radeon_private_t *dev_priv = dev->dev_private;	\
-		if ( dev_priv->page_flipping ) {			\
-			radeon_do_cleanup_pageflip( dev );		\
-		}							\
-	}								\
-} while (0)
-
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) radeon_do_cleanup_cp( dev );		\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_radeon_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-	((drm_radeon_private_t *)((dev)->dev_private))->buffers
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux-core/tdfx_drv.c b/linux-core/tdfx_drv.c
index e8d7955c..71d065f1 100644
--- a/linux-core/tdfx_drv.c
+++ b/linux-core/tdfx_drv.c
@@ -38,14 +38,12 @@
 
 #define DRIVER_NAME		"tdfx"
 #define DRIVER_DESC		"3dfx Banshee/Voodoo3+"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		1
 #define DRIVER_MINOR		0
 #define DRIVER_PATCHLEVEL	0
 
-#include "drm_drv.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
@@ -53,6 +51,7 @@
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux/Makefile.linux b/linux/Makefile.linux
index b5aca0a8..7c1269c6 100644
--- a/linux/Makefile.linux
+++ b/linux/Makefile.linux
@@ -47,37 +47,34 @@
 
 # **** End of SMP/MODVERSIONS detection
 
-MODS=           gamma.o tdfx.o
-LIBS=
+MODS =		gamma.o tdfx.o
+LIBS =
 
-#DRMOBJS=	init.o memory.o proc.o auth.o context.o drawable.o bufs.o \
-#		lists.o lock.o ioctl.o fops.o vm.o dma.o ctxbitmap.o
-DRMOBS=
-DRMTEMPLATES=	drm_init.h drm_memory.h drm_proc.h drm_auth.h drm_context.h \
-		drm_drawable.h drm_bufs.h drm_lists.h drm_lock.h drm_ioctl.h \
-		drm_fops.h drm_vm.h drm_dma.h drm_stub.h
-DRMHEADERS=	drm.h drmP.h compat-pre24.h
+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
+DRMHEADERS =	drm.h drmP.h compat-pre24.h
 
-GAMMAOBJS=      gamma_drv.o gamma_drm.o gamma_dma.o gamma_context.o
-GAMMAHEADERS=   gamma_drv.h $(DRMHEADERS) $(DRMTEMPLATES)
+GAMMAOBJS =	gamma_drv.o gamma_dma.o
+GAMMAHEADERS =	gamma_drv.h $(DRMHEADERS) $(DRMTEMPLATES)
 
-TDFXOBJS=       tdfx_drv.o
-TDFXHEADERS=    tdfx.h $(DRMHEADERS)
+TDFXOBJS =	tdfx_drv.o
+TDFXHEADERS =	tdfx.h $(DRMHEADERS)
 
-INC=		/usr/include
+INC =		/usr/include
 
-CFLAGS=		-O2 $(WARNINGS)
-WARNINGS=	-Wall -Wwrite-strings -Wpointer-arith -Wcast-align \
+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
-PRGCFLAGS=      $(CFLAGS) -g -ansi -pedantic -DPOSIX_C_SOURCE=199309L \
+MODCFLAGS =	$(CFLAGS) -D__KERNEL__ -DMODULE -fomit-frame-pointer
+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=
+PRGLIBS =
 
 # **** Start of SMP/MODVERSIONS detection
 
@@ -133,7 +130,8 @@ endif
 
 ifeq ($(AGP),1)
 MODCFLAGS += -DCONFIG_AGP -DCONFIG_AGP_MODULE
-#DRMOBJS += agpsupport.o
+DRMTEMPLATES += drm_agpsupport.h
+DRMHEADERS += agpsupport-pre24.h
 MODS += mga.o r128.o radeon.o
 ifeq ($(MACHINE),i386)
 MODS += i810.o
@@ -143,17 +141,17 @@ MODS += i810.o
 endif
 
 
-MGAOBJS=	mga_drv.o mga_dma.o mga_state.o mga_warp.o
-MGAHEADERS=	mga.h mga_drv.h $(DRMHEADERS) $(DRMTEMPLATES)
+MGAOBJS =	mga_drv.o mga_dma.o mga_state.o mga_warp.o
+MGAHEADERS =	mga.h mga_drv.h mga_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
 
-I810OBJS=	i810_drv.o i810_dma.o
-I810HEADERS=	i810.h i810_drv.h $(DRMHEADERS) $(DRMTEMPLATES)
+I810OBJS =	i810_drv.o i810_dma.o
+I810HEADERS =	i810.h i810_drv.h i810_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
 
-R128OBJS=	r128_drv.o r128_cce.o r128_state.o
-R128HEADERS=	r128.h r128_drv.h r128_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
+R128OBJS =	r128_drv.o r128_cce.o r128_state.o
+R128HEADERS =	r128.h r128_drv.h r128_drm.h $(DRMHEADERS) $(DRMTEMPLATES)
 
-RADEONOBJS=	radeon_drv.o radeon_cp.o radeon_state.o
-RADEONHEADERS=	radeon.h radeon_drv.h radeon_drm.h $(DRMHEADERS) \
+RADEONOBJS =	radeon_drv.o radeon_cp.o radeon_state.o
+RADEONHEADERS =	radeon.h radeon_drv.h radeon_drm.h $(DRMHEADERS) \
 		$(DRMTEMPLATES)
 endif
 
@@ -204,10 +202,6 @@ endif
 
 # **** End of configuration
 
-libdrm.a: $(DRMOBJS)
-	-$(RM) -f $@
-	$(AR) rcs $@ $(DRMOBJS)
-
 dristat: dristat.c
 	$(CC) $(PRGCFLAGS) $< -o $@
 
@@ -259,7 +253,6 @@ ChangeLog:
 %.o: %.c
 	$(CC) $(MODCFLAGS) -I$(TREE) -c $< -o $@
 
-$(DRMOBJS): $(DRMHEADERS)
 $(GAMMAOBJS): $(GAMMAHEADERS)
 $(TDFXOBJS): $(TDFXHEADERS)
 ifeq ($(AGP),1)
diff --git a/linux/drmP.h b/linux/drmP.h
index 58d98f50..4032689a 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -83,15 +83,24 @@
 #ifndef __HAVE_MTRR
 #define __HAVE_MTRR		0
 #endif
+#ifndef __HAVE_CTX_BITMAP
+#define __HAVE_CTX_BITMAP	0
+#endif
 #ifndef __HAVE_DMA
 #define __HAVE_DMA		0
 #endif
+#ifndef __HAVE_DMA_IRQ
+#define __HAVE_DMA_IRQ		0
+#endif
 #ifndef __HAVE_DMA_WAITLIST
 #define __HAVE_DMA_WAITLIST	0
 #endif
 #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)))
@@ -103,7 +112,6 @@
 
 #define DRM_DEBUG_CODE 2	  /* Include debugging code (if > 1, then
 				     also include looping detection. */
-#define DRM_DMA_HISTOGRAM 1	  /* Make histogram of DMA latency. */
 
 #define DRM_HASH_SIZE	      16 /* Size of key hash table		  */
 #define DRM_KERNEL_CONTEXT    0	 /* Change drm_resctx if changed	  */
@@ -627,7 +635,7 @@ typedef struct drm_device {
 	struct tq_struct  tq;
 	cycles_t	  ctx_start;
 	cycles_t	  lck_start;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	drm_histogram_t	  histo;
 #endif
 
@@ -651,9 +659,11 @@ typedef struct drm_device {
 } drm_device_t;
 
 
-				/* Internal function definitions */
+/* ================================================================
+ * Internal function definitions
+ */
 
-				/* Misc. support (init.c) */
+				/* Misc. support (drm_init.h) */
 extern int	     DRM(flags);
 extern void	     DRM(parse_options)( char *s );
 extern int           DRM(cpu_valid)( void );
@@ -670,7 +680,7 @@ extern int           DRM(lock)(struct inode *inode, struct file *filp,
 extern int           DRM(unlock)(struct inode *inode, struct file *filp,
 				 unsigned int cmd, unsigned long arg);
 
-				/* Device support (fops.c) */
+				/* Device support (drm_fops.h) */
 extern int	     DRM(open_helper)(struct inode *inode, struct file *filp,
 				      drm_device_t *dev);
 extern int	     DRM(flush)(struct file *filp);
@@ -682,7 +692,7 @@ 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 (vm.c) */
+				/* Mapping support (drm_vm.h) */
 #if LINUX_VERSION_CODE < 0x020317
 extern unsigned long DRM(vm_nopage)(struct vm_area_struct *vma,
 				    unsigned long address,
@@ -717,17 +727,7 @@ extern int	     DRM(mmap_dma)(struct file *filp,
 				   struct vm_area_struct *vma);
 extern int	     DRM(mmap)(struct file *filp, struct vm_area_struct *vma);
 
-
-				/* Proc support (proc.c) */
-extern struct proc_dir_entry *drm_proc_init(drm_device_t *dev,
-					    int minor,
-					    struct proc_dir_entry *root,
-					    struct proc_dir_entry **dev_root);
-extern int          drm_proc_cleanup(int minor,
-                                     struct proc_dir_entry *root,
-                                     struct proc_dir_entry *dev_root);
-
-				/* Memory management support (memory.c) */
+				/* Memory management support (drm_memory.h) */
 extern void	     DRM(mem_init)(void);
 extern int	     DRM(mem_info)(char *buf, char **start, off_t offset,
 				   int request, int *eof, void *data);
@@ -750,7 +750,7 @@ extern int           DRM(bind_agp)(agp_memory *handle, unsigned int start);
 extern int           DRM(unbind_agp)(agp_memory *handle);
 #endif
 
-				/* Misc. IOCTL support (ioctl.c) */
+				/* Misc. IOCTL support (drm_ioctl.h) */
 extern int	     DRM(irq_busid)(struct inode *inode, struct file *filp,
 				    unsigned int cmd, unsigned long arg);
 extern int	     DRM(getunique)(struct inode *inode, struct file *filp,
@@ -764,7 +764,7 @@ extern int	     DRM(getclient)(struct inode *inode, struct file *filp,
 extern int	     DRM(getstats)(struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg);
 
-				/* Context IOCTL support (context.c) */
+				/* Context IOCTL support (drm_context.h) */
 extern int	     DRM(resctx)( struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg );
 extern int	     DRM(addctx)( struct inode *inode, struct file *filp,
@@ -783,14 +783,19 @@ extern int	     DRM(rmctx)( struct inode *inode, struct file *filp,
 extern int	     DRM(context_switch)(drm_device_t *dev, int old, int new);
 extern int	     DRM(context_switch_complete)(drm_device_t *dev, int new);
 
-				/* Drawable IOCTL support (drawable.c) */
+#if __HAVE_CTX_BITMAP
+extern int	     DRM(ctxbitmap_init)( drm_device_t *dev );
+extern void	     DRM(ctxbitmap_cleanup)( drm_device_t *dev );
+#endif
+
+				/* Drawable IOCTL support (drm_drawable.h) */
 extern int	     DRM(adddraw)(struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg);
 extern int	     DRM(rmdraw)(struct inode *inode, struct file *filp,
 				 unsigned int cmd, unsigned long arg);
 
 
-				/* Authentication IOCTL support (auth.c) */
+				/* Authentication IOCTL support (drm_auth.h) */
 extern int	     DRM(add_magic)(drm_device_t *dev, drm_file_t *priv,
 				    drm_magic_t magic);
 extern int	     DRM(remove_magic)(drm_device_t *dev, drm_magic_t magic);
@@ -800,7 +805,7 @@ extern int	     DRM(authmagic)(struct inode *inode, struct file *filp,
 				    unsigned int cmd, unsigned long arg);
 
 
-				/* Locking IOCTL support (lock.c) */
+				/* 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,
@@ -821,17 +826,11 @@ extern int	     DRM(flush_block_and_flush)(drm_device_t *dev, int context,
 						drm_lock_flags_t flags);
 extern int           DRM(notifier)(void *priv);
 
-				/* Context Bitmap support (ctxbitmap.c) */
-extern int	     DRM(ctxbitmap_init)( drm_device_t *dev );
-extern void	     DRM(ctxbitmap_cleanup)( drm_device_t *dev );
-
-
-
-
-				/* Buffer management support (bufs.c) */
+				/* Buffer management support (drm_bufs.h) */
 extern int	     DRM(order)( unsigned long size );
 extern int	     DRM(addmap)( struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg );
+#if __HAVE_DMA
 extern int	     DRM(addbufs)( struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg );
 extern int	     DRM(infobufs)( struct inode *inode, struct file *filp,
@@ -843,27 +842,37 @@ extern int	     DRM(freebufs)( struct inode *inode, struct file *filp,
 extern int	     DRM(mapbufs)( struct inode *inode, struct file *filp,
 				   unsigned int cmd, unsigned long arg );
 
-
-#if __HAVE_DMA
-				/* DMA support (dma.c) */
+				/* DMA support (drm_dma.h) */
 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)(drm_device_t *dev, pid_t pid);
+#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)(drm_device_t *dev, drm_dma_t *dma);
-#if 0
 extern int	     DRM(dma_get_buffers)(drm_device_t *dev, 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 );
+extern int           DRM(irq_install)( drm_device_t *dev, int irq );
+extern int           DRM(irq_uninstall)( drm_device_t *dev );
+extern void          DRM(dma_service)( int irq, void *device,
+				       struct pt_regs *regs );
+#if __HAVE_DMA_IRQ_BH
+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
-#endif
 
-				/* Buffer list management support (lists.c) */
+				/* 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);
@@ -877,9 +886,10 @@ 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
-				/* AGP/GART support (agpsupport.c) */
+				/* AGP/GART support (drm_agpsupport.h) */
 extern drm_agp_head_t *DRM(agp_init)(void);
 extern void           DRM(agp_uninit)(void);
 extern int            DRM(agp_acquire)(struct inode *inode, struct file *filp,
@@ -903,6 +913,7 @@ extern agp_memory     *DRM(agp_allocate_memory)(size_t pages, u32 type);
 extern int            DRM(agp_free_memory)(agp_memory *handle);
 extern int            DRM(agp_bind_memory)(agp_memory *handle, off_t start);
 extern int            DRM(agp_unbind_memory)(agp_memory *handle);
+#endif
 
 				/* Stub support (drm_stub.h) */
 int                   DRM(stub_register)(const char *name,
@@ -910,6 +921,14 @@ int                   DRM(stub_register)(const char *name,
 					 drm_device_t *dev);
 int                   DRM(stub_unregister)(int minor);
 
-#endif
-#endif
+				/* Proc support (drm_proc.h) */
+extern struct proc_dir_entry *DRM(proc_init)(drm_device_t *dev,
+					     int minor,
+					     struct proc_dir_entry *root,
+					     struct proc_dir_entry **dev_root);
+extern int            DRM(proc_cleanup)(int minor,
+					struct proc_dir_entry *root,
+					struct proc_dir_entry *dev_root);
+
+#endif /* __KERNEL__ */
 #endif
diff --git a/linux/drm_bufs.h b/linux/drm_bufs.h
index f2613a98..38ea1ff0 100644
--- a/linux/drm_bufs.h
+++ b/linux/drm_bufs.h
@@ -252,7 +252,7 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 		buf->order   = order;
 		buf->used    = 0;
 
-		buf->offset  = (dma->byte_count + offset); /* ******** */
+		buf->offset  = (dma->byte_count + offset);
 		buf->bus_address = agp_offset + offset;
 		buf->address = (void *)(agp_offset + offset);
 		buf->next    = NULL;
@@ -266,7 +266,7 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 					       DRM_MEM_BUFS );
 		memset( buf->dev_private, 0, buf->dev_priv_size );
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 		buf->time_queued = 0;
 		buf->time_dispatched = 0;
 		buf->time_completed = 0;
@@ -297,17 +297,12 @@ int DRM(addbufs_agp)( struct inode *inode, struct file *filp,
 	DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
 	DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
 
-/* GH: Please leave this disabled for now.  I need to fix this properly...
- */
-#if 0
-	/* FIXME: work this mess out...
-	 */
+#if __HAVE_DMA_FREELIST
 	DRM(freelist_create)( &entry->freelist, entry->buf_count );
 	for ( i = 0 ; i < entry->buf_count ; i++ ) {
 		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
 	}
 #endif
-
 	up( &dev->struct_sem );
 
 	request.count = entry->buf_count;
@@ -443,11 +438,11 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
 			buf->pending = 0;
 			init_waitqueue_head( &buf->dma_wait );
 			buf->pid     = 0;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 			buf->time_queued     = 0;
 			buf->time_dispatched = 0;
 			buf->time_completed  = 0;
-			buf->time_freed	     = 0;
+			buf->time_freed      = 0;
 #endif
 			DRM_DEBUG( "buffer %d @ %p\n",
 				   entry->buf_count, buf->address );
@@ -469,17 +464,12 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
 	dma->page_count += entry->seg_count << page_order;
 	dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
 
-/* GH: Please leave this disabled for now.  I need to fix this properly...
- */
-#if 0
-	/* FIXME: work this mess out...
-	 */
+#if __HAVE_DMA_FREELIST
 	DRM(freelist_create)( &entry->freelist, entry->buf_count );
 	for ( i = 0 ; i < entry->buf_count ; i++ ) {
 		DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
 	}
 #endif
-
 	up( &dev->struct_sem );
 
 	request.count = entry->buf_count;
diff --git a/linux/drm_context.h b/linux/drm_context.h
index 6bbcfca8..e2b6170a 100644
--- a/linux/drm_context.h
+++ b/linux/drm_context.h
@@ -29,6 +29,11 @@
  *    Gareth Hughes <gareth@valinux.com>
  */
 
+#define __NO_VERSION__
+#include "drmP.h"
+
+#if __HAVE_CTX_BITMAP
+
 /* ================================================================
  * Context bitmap support
  */
@@ -98,7 +103,7 @@ int DRM(context_switch)( drm_device_t *dev, int old, int new )
                 return -EBUSY;
         }
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         dev->ctx_start = get_cycles();
 #endif
 
@@ -131,7 +136,7 @@ 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 DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         atomic_inc( &dev->histo.ctx[DRM(histogram_slot)(get_cycles()
 							- dev->ctx_start)] );
 
@@ -268,3 +273,376 @@ 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 = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES);
+	memset(queue, 0, sizeof(*queue));
+	atomic_set(&queue->use_count, 1);
+
+	++dev->queue_count;
+	if (dev->queue_count >= dev->queue_slots) {
+		oldslots = dev->queue_slots * sizeof(*dev->queuelist);
+		if (!dev->queue_slots) dev->queue_slots = 1;
+		dev->queue_slots *= 2;
+		newslots = dev->queue_slots * sizeof(*dev->queuelist);
+
+		dev->queuelist = DRM(realloc)(dev->queuelist,
+					      oldslots,
+					      newslots,
+					      DRM_MEM_QUEUES);
+		if (!dev->queuelist) {
+			up(&dev->struct_sem);
+			DRM_DEBUG("out of memory\n");
+			return -ENOMEM;
+		}
+	}
+	dev->queuelist[dev->queue_count-1] = queue;
+
+	up(&dev->struct_sem);
+	DRM_DEBUG("%d (new)\n", dev->queue_count - 1);
+	return dev->queue_count - 1;
+}
+
+int DRM(resctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_ctx_res_t	res;
+	drm_ctx_t	ctx;
+	int		i;
+
+	DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
+	if (copy_from_user(&res, (drm_ctx_res_t *)arg, sizeof(res)))
+		return -EFAULT;
+	if (res.count >= DRM_RESERVED_CONTEXTS) {
+		memset(&ctx, 0, sizeof(ctx));
+		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
+			ctx.handle = i;
+			if (copy_to_user(&res.contexts[i],
+					 &i,
+					 sizeof(i)))
+				return -EFAULT;
+		}
+	}
+	res.count = DRM_RESERVED_CONTEXTS;
+	if (copy_to_user((drm_ctx_res_t *)arg, &res, sizeof(res)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(addctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	if ((ctx.handle = DRM(alloc_queue)(dev)) == DRM_KERNEL_CONTEXT) {
+				/* Init kernel's context and get a new one. */
+		DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+		ctx.handle = DRM(alloc_queue)(dev);
+	}
+	DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx);
+	DRM_DEBUG("%d\n", ctx.handle);
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(modctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle < 0 || ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	if (DRM_BUFCOUNT(&q->waitlist)) {
+		atomic_dec(&q->use_count);
+		return -EBUSY;
+	}
+
+	q->flags = ctx.flags;
+
+	atomic_dec(&q->use_count);
+	return 0;
+}
+
+int DRM(getctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	ctx.flags = q->flags;
+	atomic_dec(&q->use_count);
+
+	if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
+		return -EFAULT;
+
+	return 0;
+}
+
+int DRM(switchctx)(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	return DRM(context_switch)(dev, dev->last_context, ctx.handle);
+}
+
+int DRM(newctx)(struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+	DRM(context_switch_complete)(dev, ctx.handle);
+
+	return 0;
+}
+
+int DRM(rmctx)(struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg)
+{
+	drm_file_t	*priv	= filp->private_data;
+	drm_device_t	*dev	= priv->dev;
+	drm_ctx_t	ctx;
+	drm_queue_t	*q;
+	drm_buf_t	*buf;
+
+	if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
+		return -EFAULT;
+	DRM_DEBUG("%d\n", ctx.handle);
+
+	if (ctx.handle >= dev->queue_count) return -EINVAL;
+	q = dev->queuelist[ctx.handle];
+
+	atomic_inc(&q->use_count);
+	if (atomic_read(&q->use_count) == 1) {
+				/* No longer in use */
+		atomic_dec(&q->use_count);
+		return -EINVAL;
+	}
+
+	atomic_inc(&q->finalization); /* Mark queue in finalization state */
+	atomic_sub(2, &q->use_count); /* Mark queue as unused (pending
+					 finalization) */
+
+	while (test_and_set_bit(0, &dev->interrupt_flag)) {
+		schedule();
+		if (signal_pending(current)) {
+			clear_bit(0, &dev->interrupt_flag);
+			return -EINTR;
+		}
+	}
+				/* Remove queued buffers */
+	while ((buf = DRM(waitlist_get)(&q->waitlist))) {
+		DRM(free_buffer)(dev, buf);
+	}
+	clear_bit(0, &dev->interrupt_flag);
+
+				/* Wakeup blocked processes */
+	wake_up_interruptible(&q->read_queue);
+	wake_up_interruptible(&q->write_queue);
+	wake_up_interruptible(&q->flush_queue);
+
+				/* Finalization over.  Queue is made
+				   available when both use_count and
+				   finalization become 0, which won't
+				   happen until all the waiting processes
+				   stop waiting. */
+	atomic_dec(&q->finalization);
+	return 0;
+}
+
+#endif /* __HAVE_CTX_BITMAP */
diff --git a/linux/drm_dma.h b/linux/drm_dma.h
index 35eb896e..e715bd41 100644
--- a/linux/drm_dma.h
+++ b/linux/drm_dma.h
@@ -118,7 +118,7 @@ void DRM(dma_takedown)(drm_device_t *dev)
 }
 
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 /* This is slow, but is useful for debugging. */
 int DRM(histogram_slot)(unsigned long count)
 {
@@ -182,7 +182,7 @@ void DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf)
 	buf->pending  = 0;
 	buf->pid      = 0;
 	buf->used     = 0;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	buf->time_completed = get_cycles();
 #endif
 
@@ -231,85 +231,6 @@ void DRM(reclaim_buffers)(drm_device_t *dev, pid_t pid)
  */
 #if __HAVE_OLD_DMA
 
-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 DRM_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 DRM_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;
-}
-
 void DRM(clear_next_buffer)(drm_device_t *dev)
 {
 	drm_device_dma_t *dma = dev->dma;
@@ -571,6 +492,103 @@ int DRM(dma_get_buffers)(drm_device_t *dev, drm_dma_t *dma)
 	return 0;
 }
 
-#endif
+#endif /* __HAVE_OLD_DMA */
+
+
+#if __HAVE_DMA_IRQ
+
+int DRM(irq_install)( drm_device_t *dev, int irq )
+{
+	int ret;
+
+	if ( !irq )
+		return -EINVAL;
+
+	down( &dev->struct_sem );
+	if ( dev->irq ) {
+		up( &dev->struct_sem );
+		return -EBUSY;
+	}
+	dev->irq = irq;
+	up( &dev->struct_sem );
+
+	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq );
+
+	dev->context_flag = 0;
+	dev->interrupt_flag = 0;
+	dev->dma_flag = 0;
+
+	dev->dma->next_buffer = NULL;
+	dev->dma->next_queue = NULL;
+	dev->dma->this_buffer = NULL;
 
+#if __HAVE_DMA_IRQ_BH
+	INIT_LIST_HEAD( &dev->tq.list );
+	dev->tq.sync = 0;
+	dev->tq.routine = DRM(dma_immediate_bh);
+	dev->tq.data = dev;
 #endif
+
+				/* Before installing handler */
+	DRIVER_PREINSTALL();
+
+				/* Install handler */
+	ret = request_irq( dev->irq, DRM(dma_service),
+			   0, dev->devname, dev );
+	if ( ret < 0 ) {
+		down( &dev->struct_sem );
+		dev->irq = 0;
+		up( &dev->struct_sem );
+		return ret;
+	}
+
+				/* After installing handler */
+	DRIVER_POSTINSTALL();
+
+	return 0;
+}
+
+int DRM(irq_uninstall)( drm_device_t *dev )
+{
+	int irq;
+
+	down( &dev->struct_sem );
+	irq = dev->irq;
+	dev->irq = 0;
+	up( &dev->struct_sem );
+
+	if ( !irq )
+		return -EINVAL;
+
+	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq );
+
+	DRIVER_UNINSTALL();
+
+	free_irq( irq, dev );
+
+	return 0;
+}
+
+int DRM(control)( 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_control_t ctl;
+
+	if ( copy_from_user( &ctl, (drm_control_t *)arg, sizeof(ctl) ) )
+		return -EFAULT;
+
+	switch ( ctl.func ) {
+	case DRM_INST_HANDLER:
+		return DRM(irq_install)( dev, ctl.irq );
+	case DRM_UNINST_HANDLER:
+		return DRM(irq_uninstall)( dev );
+	default:
+		return -EINVAL;
+	}
+}
+
+#endif /* __HAVE_DMA_IRQ */
+
+#endif /* __HAVE_DMA */
diff --git a/linux/drm_drv.h b/linux/drm_drv.h
index b24d213e..71f52276 100644
--- a/linux/drm_drv.h
+++ b/linux/drm_drv.h
@@ -687,7 +687,7 @@ int DRM(release)( struct inode *inode, struct file *filp )
 					DRM_KERNEL_CONTEXT );
 		}
 	}
-#else
+#elif __HAVE_DMA
 	DRM(reclaim_buffers)( dev, priv->pid );
 #endif
 
@@ -794,7 +794,7 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 #if __HAVE_MULTIPLE_DMA_QUEUES
 	drm_queue_t *q;
 #endif
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         cycles_t start;
 
         dev->lck_start = start = get_cycles();
@@ -882,7 +882,7 @@ int DRM(lock)( struct inode *inode, struct file *filp,
 
         DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
         atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]);
 #endif
         return ret;
diff --git a/linux/drm_fops.h b/linux/drm_fops.h
index d646f318..dd574766 100644
--- a/linux/drm_fops.h
+++ b/linux/drm_fops.h
@@ -83,50 +83,6 @@ int DRM(flush)(struct file *filp)
 	return 0;
 }
 
-#if 0
-/* drm_release is called whenever a process closes /dev/drm*.  Linux calls
-   this only if any mappings have been closed. */
-
-int drm_release(struct inode *inode, struct file *filp)
-{
-	drm_file_t    *priv   = filp->private_data;
-	drm_device_t  *dev    = priv->dev;
-
-	DRM_DEBUG("pid = %d, device = 0x%x, open_count = %d\n",
-		  current->pid, dev->device, dev->open_count);
-
-	if (dev->lock.hw_lock
-	    && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
-	    && dev->lock.pid == current->pid) {
-		DRM_ERROR("Process %d dead, freeing lock for context %d\n",
-			  current->pid,
-			  _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
-		drm_lock_free(dev,
-			      &dev->lock.hw_lock->lock,
-			      _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
-
-				/* FIXME: may require heavy-handed reset of
-                                   hardware at this point, possibly
-                                   processed via a callback to the X
-                                   server. */
-	}
-	drm_reclaim_buffers(dev, priv->pid);
-
-	drm_fasync(-1, filp, 0);
-
-	down(&dev->struct_sem);
-	if (priv->prev) priv->prev->next = priv->next;
-	else		dev->file_first	 = priv->next;
-	if (priv->next) priv->next->prev = priv->prev;
-	else		dev->file_last	 = priv->prev;
-	up(&dev->struct_sem);
-
-	drm_free(priv, sizeof(*priv), DRM_MEM_FILES);
-
-	return 0;
-}
-#endif
-
 int DRM(fasync)(int fd, struct file *filp, int on)
 {
 	drm_file_t    *priv   = filp->private_data;
diff --git a/linux/drm_lists.h b/linux/drm_lists.h
index b597ef77..f8dbaaa7 100644
--- a/linux/drm_lists.h
+++ b/linux/drm_lists.h
@@ -74,7 +74,7 @@ int DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf)
 			  buf->idx, buf->pid);
 		return -EINVAL;
 	}
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	buf->time_queued = get_cycles();
 #endif
 	buf->list	 = DRM_LIST_WAIT;
@@ -106,6 +106,7 @@ drm_buf_t *DRM(waitlist_get)(drm_waitlist_t *bl)
 
 #endif /* __HAVE_DMA_WAITLIST */
 
+
 #if __HAVE_DMA_FREELIST
 
 int DRM(freelist_create)(drm_freelist_t *bl, int count)
@@ -142,7 +143,7 @@ int DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf)
 			  buf->idx, buf->waiting, buf->pending, buf->list);
 	}
 	if (!bl) return 1;
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	buf->time_freed = get_cycles();
 	DRM(histogram_compute)(dev, buf);
 #endif
diff --git a/linux/drm_proc.h b/linux/drm_proc.h
index 634673d9..ee9c0cbc 100644
--- a/linux/drm_proc.h
+++ b/linux/drm_proc.h
@@ -50,7 +50,7 @@ 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 DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 static int	   DRM(histo_info)(char *buf, char **start, off_t offset,
 				   int request, int *eof, void *data);
 #endif
@@ -68,7 +68,7 @@ struct drm_proc_list {
 #if DRM_DEBUG_CODE
 	{ "vma",     DRM(vma_info)     },
 #endif
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 	{ "histo",   DRM(histo_info)   },
 #endif
 };
@@ -481,7 +481,7 @@ static int DRM(vma_info)(char *buf, char **start, off_t offset, int request,
 #endif
 
 
-#if DRM_DMA_HISTOGRAM
+#if __HAVE_DMA_HISTOGRAM
 static int DRM(_histo_info)(char *buf, char **start, off_t offset, int request,
 			    int *eof, void *data)
 {
diff --git a/linux/drm_stub.h b/linux/drm_stub.h
index ed37af4d..a6a39d86 100644
--- a/linux/drm_stub.h
+++ b/linux/drm_stub.h
@@ -1,4 +1,4 @@
-/* drm_stub.c -- -*- linux-c -*-
+/* drm_stub.h -- -*- linux-c -*-
  * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
  *
  * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
@@ -28,6 +28,9 @@
  *
  */
 
+#define __NO_VERSION__
+#include "drmP.h"
+
 #define DRM_STUB_MAXCARDS 16	/* Enough for one machine */
 
 static struct drm_stub_list {
@@ -58,7 +61,7 @@ static int DRM(stub_open)(struct inode *inode, struct file *filp)
 		filp->f_op = fops_get(old_fops);
 	}
 	fops_put(old_fops);
-		
+
 	return err;
 }
 
@@ -73,7 +76,7 @@ static int DRM(stub_getminor)(const char *name, struct file_operations *fops,
 			      drm_device_t *dev)
 {
 	int i;
-	
+
 	if (!DRM(stub_list)) {
 		DRM(stub_list) = DRM(alloc)(sizeof(*DRM(stub_list))
 					    * DRM_STUB_MAXCARDS, DRM_MEM_STUB);
diff --git a/linux/gamma.h b/linux/gamma.h
index 5ca1f745..383c54af 100644
--- a/linux/gamma.h
+++ b/linux/gamma.h
@@ -1,3 +1,32 @@
+/* gamma.c -- 3dlabs GMX 2000 driver -*- linux-c -*-
+ * Created: Mon Jan  4 08:58:31 1999 by gareth@valinux.com
+ *
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
 #ifndef __GAMMA_H__
 #define __GAMMA_H__
 
@@ -5,18 +34,54 @@
  */
 #define DRM(x) gamma_##x
 
-#define __HAVE_MTRR		1
-#define __HAVE_PCI_DMA		1
-#define __HAVE_CTX_BITMAP	0
+/* General customization:
+ */
+#define __HAVE_MTRR			1
+
+/* DMA customization:
+ */
+#define __HAVE_DMA			1
+#define __HAVE_OLD_DMA			1
+#define __HAVE_PCI_DMA			1
+
 #define __HAVE_MULTIPLE_DMA_QUEUES	1
+#define __HAVE_DMA_WAITQUEUE		1
+
+#define __HAVE_DMA_WAITLIST		1
+#define __HAVE_DMA_FREELIST		1
+
 #define __HAVE_DMA_FLUSH		1
-#define __HAVE_DMA_QUEUE		0
 #define __HAVE_DMA_SCHEDULE		1
-#define __HAVE_DMA_WAITQUEUE		1
-#define __HAVE_DMA_WAITLIST	1
-#define __HAVE_DMA_FREELIST	1
-#define __HAVE_DMA		1
-#define __HAVE_OLD_DMA		1
-#define __HAVE_DMA_IRQ		1
 
-#endif
+#define __HAVE_DMA_READY		1
+#define DRIVER_DMA_READY() do {						\
+	gamma_dma_ready(dev);						\
+} while (0)
+
+#define __HAVE_DMA_QUIESCENT		1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	/* FIXME ! */ 							\
+	gamma_dma_quiescent_dual(dev);					\
+	return 0;							\
+} while (0)
+
+#define __HAVE_DMA_IRQ			1
+#define __HAVE_DMA_IRQ_BH		1
+#define DRIVER_PREINSTALL() do {					\
+	GAMMA_WRITE( GAMMA_GCOMMANDMODE,	0x00000000 );		\
+	GAMMA_WRITE( GAMMA_GDMACONTROL,		0x00000000 );		\
+} while (0)
+
+#define DRIVER_POSTINSTALL() do {					\
+	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00002001 );		\
+	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000008 );		\
+	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00039090 );		\
+} while (0)
+
+#define DRIVER_UNINSTALL() do {						\
+	GAMMA_WRITE( GAMMA_GDELAYTIMER,		0x00000000 );		\
+	GAMMA_WRITE( GAMMA_COMMANDINTENABLE,	0x00000000 );		\
+	GAMMA_WRITE( GAMMA_GINTENABLE,		0x00000000 );		\
+} while (0)
+
+#endif /* __GAMMA_H__ */
diff --git a/linux/gamma_context.c b/linux/gamma_context.c
deleted file mode 100644
index d94054a2..00000000
--- a/linux/gamma_context.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/* context.c -- IOCTLs for contexts and DMA queues -*- linux-c -*-
- * Created: Tue Feb  2 08:37:54 1999 by faith@precisioninsight.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
- * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- * 
- * Authors:
- *    Rickard E. (Rik) Faith <faith@valinux.com>
- *
- */
-
-#define __NO_VERSION__
-#include "gamma.h"
-#include "drmP.h"
-
-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;
-
-	gamma_waitlist_create(&q->waitlist, dev->dma->buf_count);
-
-	return 0;
-}
-
-
-/* drm_alloc_queue:
-PRE: 1) dev->queuelist[0..dev->queue_count] is allocated and will not
-	disappear (so all deallocation must be done after IOCTLs are off)
-     2) dev->queue_count < dev->queue_slots
-     3) dev->queuelist[i].use_count == 0 and
-	dev->queuelist[i].finalization == 0 if i not in use 
-POST: 1) dev->queuelist[i].use_count == 1
-      2) dev->queue_count < dev->queue_slots */
-		
-static int drm_alloc_queue(drm_device_t *dev)
-{
-	int	    i;
-	drm_queue_t *queue;
-	int	    oldslots;
-	int	    newslots;
-				/* Check for a free queue */
-	for (i = 0; i < dev->queue_count; i++) {
-		atomic_inc(&dev->queuelist[i]->use_count);
-		if (atomic_read(&dev->queuelist[i]->use_count) == 1
-		    && !atomic_read(&dev->queuelist[i]->finalization)) {
-			DRM_DEBUG("%d (free)\n", i);
-			return i;
-		}
-		atomic_dec(&dev->queuelist[i]->use_count);
-	}
-				/* Allocate a new queue */
-	down(&dev->struct_sem);
-	
-	queue = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES);
-	memset(queue, 0, sizeof(*queue));
-	atomic_set(&queue->use_count, 1);
-	
-	++dev->queue_count;
-	if (dev->queue_count >= dev->queue_slots) {
-		oldslots = dev->queue_slots * sizeof(*dev->queuelist);
-		if (!dev->queue_slots) dev->queue_slots = 1;
-		dev->queue_slots *= 2;
-		newslots = dev->queue_slots * sizeof(*dev->queuelist);
-
-		dev->queuelist = gamma_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 gamma_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 gamma_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 gamma_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 gamma_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 gamma_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 gamma_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 gamma_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 = gamma_waitlist_get(&q->waitlist))) {
-		gamma_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;
-}
diff --git a/linux/gamma_dma.c b/linux/gamma_dma.c
index e2ac6061..2238d126 100644
--- a/linux/gamma_dma.c
+++ b/linux/gamma_dma.c
@@ -11,11 +11,11 @@
  * 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
@@ -23,7 +23,7 @@
  * 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>
  *
@@ -37,72 +37,6 @@
 #include <linux/interrupt.h>	/* For task queue support */
 #include <linux/delay.h>
 
-#if 0
-#define DO_IOREMAP( _map )						\
-do {									\
-	(_map)->handle = DRM(ioremap)( (_map)->offset, (_map)->size );	\
-} while (0)
-
-#define DO_IOREMAPFREE( _map )						\
-do {									\
-	if ( (_map)->handle && (_map)->size )				\
-		DRM(ioremapfree)( (_map)->handle, (_map)->size );	\
-} while (0)
-
-#define DO_FIND_MAP( _map, _offset )					\
-do {									\
-	int _i;								\
-	for ( _i = 0 ; _i < dev->map_count ; _i++ ) {			\
-		if ( dev->maplist[_i]->offset == _offset ) {		\
-			_map = dev->maplist[_i];			\
-			break;						\
-		}							\
-	}								\
-} while (0)
-#endif
-
-/* WARNING!!! MAGIC NUMBER!!!  The number of regions already added to the
-   kernel must be specified here.  Currently, the number is 2.	This must
-   match the order the X server uses for instantiating register regions ,
-   or must be passed in a new ioctl. */
-#define GAMMA_REG(reg)						   \
-	(2							   \
-	 + ((reg < 0x1000)					   \
-	    ? 0							   \
-	    : ((reg < 0x10000) ? 1 : ((reg < 0x11000) ? 2 : 3))))
-
-#define GAMMA_OFF(reg)						   \
-	((reg < 0x1000)						   \
-	 ? reg							   \
-	 : ((reg < 0x10000)					   \
-	    ? (reg - 0x1000)					   \
-	    : ((reg < 0x11000)					   \
-	       ? (reg - 0x10000)				   \
-	       : (reg - 0x11000))))
-
-#define GAMMA_BASE(reg)	 ((unsigned long)dev->maplist[GAMMA_REG(reg)]->handle)
-#define GAMMA_ADDR(reg)	 (GAMMA_BASE(reg) + GAMMA_OFF(reg))
-#define GAMMA_DEREF(reg) *(__volatile__ int *)GAMMA_ADDR(reg)
-#define GAMMA_READ(reg)	 GAMMA_DEREF(reg)
-#define GAMMA_WRITE(reg,val) do { GAMMA_DEREF(reg) = val; } while (0)
-
-#define GAMMA_BROADCASTMASK    0x9378
-#define GAMMA_COMMANDINTENABLE 0x0c48
-#define GAMMA_DMAADDRESS       0x0028
-#define GAMMA_DMACOUNT	       0x0030
-#define GAMMA_FILTERMODE       0x8c00
-#define GAMMA_GCOMMANDINTFLAGS 0x0c50
-#define GAMMA_GCOMMANDMODE     0x0c40
-#define GAMMA_GCOMMANDSTATUS   0x0c60
-#define GAMMA_GDELAYTIMER      0x0c38
-#define GAMMA_GDMACONTROL      0x0060
-#define GAMMA_GINTENABLE       0x0808
-#define GAMMA_GINTFLAGS	       0x0810
-#define GAMMA_INFIFOSPACE      0x0018
-#define GAMMA_OUTFIFOWORDS     0x0020
-#define GAMMA_OUTPUTFIFO       0x2000
-#define GAMMA_SYNC	       0x8c40
-#define GAMMA_SYNC_TAG	       0x0188
 
 static inline void gamma_dma_dispatch(drm_device_t *dev, unsigned long address,
 				      unsigned long length)
@@ -122,7 +56,7 @@ void gamma_dma_quiescent_single(drm_device_t *dev)
 
 	GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
 	GAMMA_WRITE(GAMMA_SYNC, 0);
-	
+
 	do {
 		while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
 			;
@@ -140,13 +74,13 @@ void gamma_dma_quiescent_dual(drm_device_t *dev)
 
 	GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
 	GAMMA_WRITE(GAMMA_SYNC, 0);
-	
+
 				/* Read from first MX */
 	do {
 		while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
 			;
 	} while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
-	
+
 				/* Read from second MX */
 	do {
 		while (!GAMMA_READ(GAMMA_OUTFIFOWORDS + 0x10000))
@@ -165,11 +99,11 @@ static inline int gamma_dma_is_ready(drm_device_t *dev)
 	return !GAMMA_READ(GAMMA_DMACOUNT);
 }
 
-static void gamma_dma_service(int irq, void *device, struct pt_regs *regs)
+void gamma_dma_service(int irq, void *device, struct pt_regs *regs)
 {
 	drm_device_t	 *dev = (drm_device_t *)device;
 	drm_device_dma_t *dma = dev->dma;
-	
+
 	atomic_inc(&dev->counts[6]); /* _DRM_STAT_IRQ */
 	GAMMA_WRITE(GAMMA_GDELAYTIMER, 0xc350/2); /* 0x05S */
 	GAMMA_WRITE(GAMMA_GCOMMANDINTFLAGS, 8);
@@ -202,7 +136,7 @@ static int gamma_do_dma(drm_device_t *dev, int locked)
 #endif
 
 	if (test_and_set_bit(0, &dev->dma_flag)) return -EBUSY;
-	
+
 #if DRM_DMA_HISTOGRAM
 	dma_start = get_cycles();
 #endif
@@ -234,7 +168,7 @@ static int gamma_do_dma(drm_device_t *dev, int locked)
 		clear_bit(0, &dev->dma_flag);
 		return 0;
 	}
-	
+
 	if (!gamma_dma_is_ready(dev)) {
 		clear_bit(0, &dev->dma_flag);
 		return -EBUSY;
@@ -258,13 +192,14 @@ static int gamma_do_dma(drm_device_t *dev, int locked)
 	    && !(dev->queuelist[buf->context]->flags
 		 & _DRM_CONTEXT_PRESERVED)) {
 				/* PRE: dev->last_context != buf->context */
-		if (drm_context_switch(dev, dev->last_context, buf->context)) {
-			gamma_clear_next_buffer(dev);
-			gamma_free_buffer(dev, buf);
+		if (DRM(context_switch)(dev, dev->last_context,
+					buf->context)) {
+			DRM(clear_next_buffer)(dev);
+			DRM(free_buffer)(dev, buf);
 		}
 		retcode = -EBUSY;
 		goto cleanup;
-			
+
 				/* POST: we will wait for the context
 				   switch and will dispatch on a later call
 				   when dev->last_context == buf->context.
@@ -305,12 +240,12 @@ cleanup:
 	return retcode;
 }
 
-static void gamma_dma_schedule_timer_wrapper(unsigned long dev)
+static void gamma_dma_timer_bh(unsigned long dev)
 {
 	gamma_dma_schedule((drm_device_t *)dev, 0);
 }
 
-static void gamma_dma_schedule_tq_wrapper(void *dev)
+void gamma_dma_immediate_bh(void *dev)
 {
 	gamma_dma_schedule(dev, 0);
 }
@@ -354,8 +289,7 @@ again:
 		if (!(retcode = gamma_do_dma(dev, locked))) ++processed;
 	} else {
 		do {
-			next = gamma_select_queue(dev,
-					     gamma_dma_schedule_timer_wrapper);
+			next = gamma_select_queue(dev, gamma_dma_timer_bh);
 			if (next >= 0) {
 				q   = dev->queuelist[next];
 				buf = gamma_waitlist_get(&q->waitlist);
@@ -383,9 +317,9 @@ again:
 			goto again;
 		}
 	}
-	
+
 	clear_bit(0, &dev->interrupt_flag);
-	
+
 #if DRM_DMA_HISTOGRAM
 	atomic_inc(&dev->histo.schedule[gamma_histogram_slot(get_cycles()
 							   - schedule_start)]);
@@ -472,15 +406,15 @@ static int gamma_dma_priority(drm_device_t *dev, drm_dma_t *d)
 			goto cleanup;
 		}
 		buf->pending = 1;
-		
+
 		if (dev->last_context != buf->context
 		    && !(dev->queuelist[buf->context]->flags
 			 & _DRM_CONTEXT_PRESERVED)) {
 			add_wait_queue(&dev->context_wait, &entry);
 			current->state = TASK_INTERRUPTIBLE;
 				/* PRE: dev->last_context != buf->context */
-			drm_context_switch(dev, dev->last_context,
-					   buf->context);
+			DRM(context_switch)(dev, dev->last_context,
+					    buf->context);
 				/* POST: we will wait for the context
 				   switch and will dispatch on a later call
 				   when dev->last_context == buf->context.
@@ -507,7 +441,7 @@ static int gamma_dma_priority(drm_device_t *dev, drm_dma_t *d)
 		gamma_dma_dispatch(dev, address, length);
 		atomic_inc(&dev->counts[9]); /* _DRM_STAT_SPECIAL */
 		atomic_add(length, &dev->counts[8]); /* _DRM_STAT_PRIMARY */
-		
+
 		if (last_buf) {
 			gamma_free_buffer(dev, last_buf);
 		}
@@ -520,7 +454,7 @@ cleanup:
 		gamma_dma_ready(dev);
 		gamma_free_buffer(dev, last_buf);
 	}
-	
+
 	if (must_free && !dev->context_flag) {
 		if (gamma_lock_free(dev, &dev->lock.hw_lock->lock,
 				  DRM_KERNEL_CONTEXT)) {
@@ -542,15 +476,15 @@ static int gamma_dma_send_buffers(drm_device_t *dev, drm_dma_t *d)
 		last_buf = dma->buflist[d->send_indices[d->send_count-1]];
 		add_wait_queue(&last_buf->dma_wait, &entry);
 	}
-	
+
 	if ((retcode = gamma_dma_enqueue(dev, d))) {
 		if (d->flags & _DRM_DMA_BLOCK)
 			remove_wait_queue(&last_buf->dma_wait, &entry);
 		return retcode;
 	}
-	
+
 	gamma_dma_schedule(dev, 0);
-	
+
 	if (d->flags & _DRM_DMA_BLOCK) {
 		DRM_DEBUG("%d waiting\n", current->pid);
 		for (;;) {
@@ -618,7 +552,7 @@ int gamma_dma(struct inode *inode, struct file *filp, unsigned int cmd,
 	if (d.send_count) {
 		if (d.flags & _DRM_DMA_PRIORITY)
 			retcode = gamma_dma_priority(dev, &d);
-		else 
+		else
 			retcode = gamma_dma_send_buffers(dev, &d);
 	}
 
@@ -635,105 +569,3 @@ int gamma_dma(struct inode *inode, struct file *filp, unsigned int cmd,
 
 	return retcode;
 }
-
-int gamma_irq_install(drm_device_t *dev, int irq)
-{
-	int retcode;
-
-	if (!irq)     return -EINVAL;
-	
-	down(&dev->struct_sem);
-	if (dev->irq) {
-		up(&dev->struct_sem);
-		return -EBUSY;
-	}
-	dev->irq = irq;
-	up(&dev->struct_sem);
-	
-	DRM_DEBUG("%d\n", irq);
-
-	dev->context_flag     = 0;
-	dev->interrupt_flag   = 0;
-	dev->dma_flag	      = 0;
-	
-	dev->dma->next_buffer = NULL;
-	dev->dma->next_queue  = NULL;
-	dev->dma->this_buffer = NULL;
-
-	INIT_LIST_HEAD(&dev->tq.list);
-	dev->tq.sync	      = 0;
-	dev->tq.routine	      = gamma_dma_schedule_tq_wrapper;
-	dev->tq.data	      = dev;
-
-
-				/* Before installing handler */
-	GAMMA_WRITE(GAMMA_GCOMMANDMODE, 0);
-	GAMMA_WRITE(GAMMA_GDMACONTROL, 0);
-	
-				/* Install handler */
-	if ((retcode = request_irq(dev->irq,
-				   gamma_dma_service,
-				   0,
-				   dev->devname,
-				   dev))) {
-		down(&dev->struct_sem);
-		dev->irq = 0;
-		up(&dev->struct_sem);
-		return retcode;
-	}
-
-				/* After installing handler */
-	GAMMA_WRITE(GAMMA_GINTENABLE,	    0x2001);
-	GAMMA_WRITE(GAMMA_COMMANDINTENABLE, 0x0008);
-	GAMMA_WRITE(GAMMA_GDELAYTIMER,	   0x39090);
-	
-	return 0;
-}
-
-int gamma_irq_uninstall(drm_device_t *dev)
-{
-	int irq;
-
-	down(&dev->struct_sem);
-	irq	 = dev->irq;
-	dev->irq = 0;
-	up(&dev->struct_sem);
-	
-	if (!irq) return -EINVAL;
-	
-	DRM_DEBUG("%d\n", irq);
-	
-	GAMMA_WRITE(GAMMA_GDELAYTIMER,	    0);
-	GAMMA_WRITE(GAMMA_COMMANDINTENABLE, 0);
-	GAMMA_WRITE(GAMMA_GINTENABLE,	    0);
-	free_irq(irq, dev);
-
-	return 0;
-}
-
-
-int gamma_control(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_control_t	ctl;
-	int		retcode;
-	
-	if (copy_from_user(&ctl, (drm_control_t *)arg, sizeof(ctl)))
-		return -EFAULT;
-	
-	switch (ctl.func) {
-	case DRM_INST_HANDLER:
-		if ((retcode = gamma_irq_install(dev, ctl.irq)))
-			return retcode;
-		break;
-	case DRM_UNINST_HANDLER:
-		if ((retcode = gamma_irq_uninstall(dev)))
-			return retcode;
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
diff --git a/linux/gamma_drm.c b/linux/gamma_drm.c
deleted file mode 100644
index 4b12d8c4..00000000
--- a/linux/gamma_drm.c
+++ /dev/null
@@ -1,33 +0,0 @@
-#define __NO_VERSION__
-#include "gamma.h"
-#include "drmP.h"
-#include "gamma_drv.h"
-
-#define DRIVER_DEV_PRIV_T	drm_gamma_private_t
-#define DRIVER_AGP_BUFFER_MAP	dev_priv->buffers
-
-#include "drm_auth.h"
-
-#include "drm_bufs.h"
-
-#include "drm_dma.h"
-
-#include "drm_drawable.h"
-
-#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"
-
-#include "drm_vm.h"
-
-#include "drm_stub.h"
diff --git a/linux/gamma_drv.c b/linux/gamma_drv.c
index c24d5a33..98916bc5 100644
--- a/linux/gamma_drv.c
+++ b/linux/gamma_drv.c
@@ -26,7 +26,7 @@
  *
  * Authors:
  *    Rickard E. (Rik) Faith <faith@valinux.com>
- *
+ *    Gareth Hughes <gareth@valinux.com>
  */
 
 #include <linux/config.h>
@@ -38,29 +38,15 @@
 
 #define DRIVER_NAME		"gamma"
 #define DRIVER_DESC		"3DLabs gamma"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		1
 #define DRIVER_MINOR		0
 #define DRIVER_PATCHLEVEL	0
 
-
 #define DRIVER_IOCTLS							  \
 	[DRM_IOCTL_NR(DRM_IOCTL_DMA)]	     = { gamma_dma,	  1, 0 }
 
-#define __HAVE_MTRR		1
-#define __HAVE_CTX_BITMAP	0
-#define __HAVE_PCI_DMA		1
-#define __HAVE_MULTIPLE_DMA_QUEUES	1
-#define __HAVE_DMA_FLUSH		1
-#define __HAVE_DMA_QUEUE		0
-#define __HAVE_DMA_SCHEDULE		1
-#define __HAVE_DMA_WAITQUEUE		1
-#define __HAVE_DMA_WAITLIST	1
-#define __HAVE_DMA_FREELIST	1
-#define __HAVE_DMA		1
-#define __HAVE_OLD_DMA		1
-#define __HAVE_DMA_IRQ		1
 
 #define __HAVE_COUNTERS		5
 #define __HAVE_COUNTER6		_DRM_STAT_IRQ
@@ -69,35 +55,19 @@
 #define __HAVE_COUNTER9		_DRM_STAT_SPECIAL
 #define __HAVE_COUNTER10	_DRM_STAT_MISSED
 
-#define __HAVE_DMA_READY	1
-#define DRIVER_DMA_READY()						\
-do {									\
-	gamma_dma_ready(dev);						\
-} while (0)
-
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT()						\
-do {									\
-	/* FIXME ! */ 							\
-	gamma_dma_quiescent_dual(dev);					\
-	return 0;							\
-} while (0)
-
-#if 0
-#define __HAVE_DRIVER_RELEASE	1
-#define DRIVER_RELEASE() do {						\
-	gamma_reclaim_buffers( dev, priv->pid );			\
-	if ( dev->dev_private ) {					\
-		drm_gamma_private_t *dev_priv = dev->dev_private;	\
-		dev_priv->dispatch_status &= MGA_IN_DISPATCH;		\
-	}								\
-} while (0)
-#endif
-
-#if 0
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) gamma_do_cleanup_dma( dev );		\
-} while (0)
-#endif
 
+#include "drm_auth.h"
+#include "drm_bufs.h"
+#include "drm_context.h"
+#include "drm_dma.h"
+#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 "drm_lock.h"
+#include "drm_memory.h"
+#include "drm_proc.h"
+#include "drm_vm.h"
+#include "drm_stub.h"
diff --git a/linux/gamma_drv.h b/linux/gamma_drv.h
index 1bfa2650..d8cca667 100644
--- a/linux/gamma_drv.h
+++ b/linux/gamma_drv.h
@@ -11,11 +11,11 @@
  * 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
@@ -23,10 +23,10 @@
  * 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>
- * 
+ *
  */
 
 #ifndef _GAMMA_DRV_H_
@@ -47,30 +47,60 @@ do {									\
 	}								\
 } while (0)
 
+
 extern void gamma_dma_ready(drm_device_t *dev);
 extern void gamma_dma_quiescent_single(drm_device_t *dev);
 extern void gamma_dma_quiescent_dual(drm_device_t *dev);
-				/* gamma_drv.c */
-extern int  gamma_version(struct inode *inode, struct file *filp,
-			  unsigned int cmd, unsigned long arg);
-extern int  gamma_open(struct inode *inode, struct file *filp);
-extern int  gamma_release(struct inode *inode, struct file *filp);
-extern int  gamma_ioctl(struct inode *inode, struct file *filp,
-			unsigned int cmd, unsigned long arg);
-extern int  gamma_lock(struct inode *inode, struct file *filp,
-		       unsigned int cmd, unsigned long arg);
-extern int  gamma_unlock(struct inode *inode, struct file *filp,
-			 unsigned int cmd, unsigned long arg);
 
 				/* gamma_dma.c */
 extern int  gamma_dma_schedule(drm_device_t *dev, int locked);
 extern int  gamma_dma(struct inode *inode, struct file *filp,
 		      unsigned int cmd, unsigned long arg);
-extern int  gamma_irq_install(drm_device_t *dev, int irq);
-extern int  gamma_irq_uninstall(drm_device_t *dev);
-extern int  gamma_control(struct inode *inode, struct file *filp,
-			  unsigned int cmd, unsigned long arg);
 extern int  gamma_find_devices(void);
 extern int  gamma_found(void);
 
+
+/* WARNING!!! MAGIC NUMBER!!!  The number of regions already added to the
+   kernel must be specified here.  Currently, the number is 2.	This must
+   match the order the X server uses for instantiating register regions ,
+   or must be passed in a new ioctl. */
+#define GAMMA_REG(reg)						   \
+	(2							   \
+	 + ((reg < 0x1000)					   \
+	    ? 0							   \
+	    : ((reg < 0x10000) ? 1 : ((reg < 0x11000) ? 2 : 3))))
+
+#define GAMMA_OFF(reg)						   \
+	((reg < 0x1000)						   \
+	 ? reg							   \
+	 : ((reg < 0x10000)					   \
+	    ? (reg - 0x1000)					   \
+	    : ((reg < 0x11000)					   \
+	       ? (reg - 0x10000)				   \
+	       : (reg - 0x11000))))
+
+#define GAMMA_BASE(reg)	 ((unsigned long)dev->maplist[GAMMA_REG(reg)]->handle)
+#define GAMMA_ADDR(reg)	 (GAMMA_BASE(reg) + GAMMA_OFF(reg))
+#define GAMMA_DEREF(reg) *(__volatile__ int *)GAMMA_ADDR(reg)
+#define GAMMA_READ(reg)	 GAMMA_DEREF(reg)
+#define GAMMA_WRITE(reg,val) do { GAMMA_DEREF(reg) = val; } while (0)
+
+#define GAMMA_BROADCASTMASK    0x9378
+#define GAMMA_COMMANDINTENABLE 0x0c48
+#define GAMMA_DMAADDRESS       0x0028
+#define GAMMA_DMACOUNT	       0x0030
+#define GAMMA_FILTERMODE       0x8c00
+#define GAMMA_GCOMMANDINTFLAGS 0x0c50
+#define GAMMA_GCOMMANDMODE     0x0c40
+#define GAMMA_GCOMMANDSTATUS   0x0c60
+#define GAMMA_GDELAYTIMER      0x0c38
+#define GAMMA_GDMACONTROL      0x0060
+#define GAMMA_GINTENABLE       0x0808
+#define GAMMA_GINTFLAGS	       0x0810
+#define GAMMA_INFIFOSPACE      0x0018
+#define GAMMA_OUTFIFOWORDS     0x0020
+#define GAMMA_OUTPUTFIFO       0x2000
+#define GAMMA_SYNC	       0x8c40
+#define GAMMA_SYNC_TAG	       0x0188
+
 #endif
diff --git a/linux/i810.h b/linux/i810.h
index 021d7988..303ddd5e 100644
--- a/linux/i810.h
+++ b/linux/i810.h
@@ -34,17 +34,77 @@
  */
 #define DRM(x) i810_##x
 
+/* General customization:
+ */
 #define __HAVE_AGP		1
 #define __MUST_HAVE_AGP		1
-
 #define __HAVE_MTRR		1
-
 #define __HAVE_CTX_BITMAP	1
 
+/* Driver customization:
+ */
+#define __HAVE_RELEASE		1
+#define DRIVER_RELEASE() do {						\
+	i810_reclaim_buffers( dev, priv->pid );				\
+} while (0)
+
+/* DMA customization:
+ */
 #define __HAVE_DMA		1
-#define __HAVE_DMA_IRQ		1
 #define __HAVE_DMA_QUEUE	1
 #define __HAVE_DMA_WAITLIST	1
 #define __HAVE_DMA_RECLAIM	1
 
+#define __HAVE_DMA_QUIESCENT	1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	i810_dma_quiescent( dev );					\
+} while (0)
+
+#define __HAVE_DMA_IRQ		1
+#define __HAVE_DMA_IRQ_BH	1
+#define DRIVER_PREINSTALL() do {					\
+	u16 tmp;							\
+   	tmp = I810_READ16( I810REG_HWSTAM );				\
+   	tmp = tmp & 0x6000;						\
+   	I810_WRITE16( I810REG_HWSTAM, tmp );				\
+									\
+      	tmp = I810_READ16( I810REG_INT_MASK_R );			\
+   	tmp = tmp & 0x6000;		/* Unmask interrupts */		\
+   	I810_WRITE16( I810REG_INT_MASK_R, tmp );			\
+   	tmp = I810_READ16( I810REG_INT_ENABLE_R );			\
+   	tmp = tmp & 0x6000;		/* Disable all interrupts */	\
+      	I810_WRITE16( I810REG_INT_ENABLE_R, tmp );			\
+} while (0)
+
+#define DRIVER_POSTINSTALL() do {					\
+	u16 tmp;							\
+   	tmp = I810_READ16( I810REG_INT_ENABLE_R );			\
+   	tmp = tmp & 0x6000;						\
+   	tmp = tmp | 0x0003;	/* Enable bp & user interrupts */	\
+   	I810_WRITE16( I810REG_INT_ENABLE_R, tmp );			\
+} while (0)
+
+#define DRIVER_UNINSTALL() do {						\
+	u16 tmp;							\
+   	tmp = I810_READ16( I810REG_INT_IDENTITY_R );			\
+   	tmp = tmp & ~(0x6000);		/* Clear all interrupts */	\
+   	if ( tmp != 0 ) I810_WRITE16( I810REG_INT_IDENTITY_R, tmp );	\
+									\
+   	tmp = I810_READ16( I810REG_INT_ENABLE_R );			\
+   	tmp = tmp & 0x6000;		/* Disable all interrupts */	\
+   	I810_WRITE16( I810REG_INT_ENABLE_R, tmp );			\
+} while (0)
+
+/* Buffer customization:
+ */
+
+#define DRIVER_BUF_PRIV_T	drm_i810_buf_priv_t
+
+#define DRIVER_AGP_BUFFERS_MAP( dev )					\
+({									\
+	drm_i810_private_t *dev_priv = (dev)->dev_private;		\
+	drm_map_t *map = (dev)->maplist[dev_priv->buffer_map_idx];	\
+	map;								\
+})
+
 #endif
diff --git a/linux/i810_dma.c b/linux/i810_dma.c
index 8585fef1..e27406a6 100644
--- a/linux/i810_dma.c
+++ b/linux/i810_dma.c
@@ -48,17 +48,6 @@
 #define I810_BUF_UNMAPPED 0
 #define I810_BUF_MAPPED   1
 
-#define I810_REG(reg)		2
-#define I810_BASE(reg)		((unsigned long) \
-				dev->maplist[I810_REG(reg)]->handle)
-#define I810_ADDR(reg)		(I810_BASE(reg) + reg)
-#define I810_DEREF(reg)		*(__volatile__ int *)I810_ADDR(reg)
-#define I810_READ(reg)		I810_DEREF(reg)
-#define I810_WRITE(reg,val) 	do { I810_DEREF(reg) = val; } while (0)
-#define I810_DEREF16(reg)	*(__volatile__ u16 *)I810_ADDR(reg)
-#define I810_READ16(reg)	I810_DEREF16(reg)
-#define I810_WRITE16(reg,val)	do { I810_DEREF16(reg) = val; } while (0)
-
 #define RING_LOCALS	unsigned int outring, ringmask; volatile char *virt;
 
 #define BEGIN_LP_RING(n) do {				\
@@ -873,7 +862,7 @@ static void i810_dma_dispatch_vertex(drm_device_t *dev,
 
 
 /* Interrupts are only for flushing */
-static void i810_dma_service(int irq, void *device, struct pt_regs *regs)
+void i810_dma_service(int irq, void *device, struct pt_regs *regs)
 {
 	drm_device_t	 *dev = (drm_device_t *)device;
    	u16 temp;
@@ -890,7 +879,7 @@ static void i810_dma_service(int irq, void *device, struct pt_regs *regs)
    	mark_bh(IMMEDIATE_BH);
 }
 
-static void i810_dma_task_queue(void *device)
+void i810_dma_immediate_bh(void *device)
 {
 	drm_device_t *dev = (drm_device_t *) device;
       	drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
@@ -899,129 +888,6 @@ static void i810_dma_task_queue(void *device)
    	wake_up_interruptible(&dev_priv->flush_queue);
 }
 
-int i810_irq_install(drm_device_t *dev, int irq)
-{
-	int retcode;
-	u16 temp;
-
-	if (!irq)     return -EINVAL;
-
-	down(&dev->struct_sem);
-	if (dev->irq) {
-		up(&dev->struct_sem);
-		return -EBUSY;
-	}
-	dev->irq = irq;
-	up(&dev->struct_sem);
-
-   	DRM_DEBUG(  "Interrupt Install : %d\n", irq);
-	DRM_DEBUG("%d\n", irq);
-
-	dev->context_flag     = 0;
-	dev->interrupt_flag   = 0;
-	dev->dma_flag	      = 0;
-
-	dev->dma->next_buffer = NULL;
-	dev->dma->next_queue  = NULL;
-	dev->dma->this_buffer = NULL;
-
-	INIT_LIST_HEAD(&dev->tq.list);
-	dev->tq.sync	      = 0;
-	dev->tq.routine	      = i810_dma_task_queue;
-	dev->tq.data	      = dev;
-
-				/* Before installing handler */
-   	temp = I810_READ16(I810REG_HWSTAM);
-   	temp = temp & 0x6000;
-   	I810_WRITE16(I810REG_HWSTAM, temp);
-
-      	temp = I810_READ16(I810REG_INT_MASK_R);
-   	temp = temp & 0x6000;
-   	I810_WRITE16(I810REG_INT_MASK_R, temp); /* Unmask interrupts */
-   	temp = I810_READ16(I810REG_INT_ENABLE_R);
-   	temp = temp & 0x6000;
-      	I810_WRITE16(I810REG_INT_ENABLE_R, temp); /* Disable all interrupts */
-
-				/* Install handler */
-	if ((retcode = request_irq(dev->irq,
-				   i810_dma_service,
-				   SA_SHIRQ,
-				   dev->devname,
-				   dev))) {
-		down(&dev->struct_sem);
-		dev->irq = 0;
-		up(&dev->struct_sem);
-		return retcode;
-	}
-   	temp = I810_READ16(I810REG_INT_ENABLE_R);
-   	temp = temp & 0x6000;
-   	temp = temp | 0x0003;
-   	I810_WRITE16(I810REG_INT_ENABLE_R,
-		     temp); /* Enable bp & user interrupts */
-	return 0;
-}
-
-int i810_irq_uninstall(drm_device_t *dev)
-{
-	int irq;
-   	u16 temp;
-
-
-/*  	return 0; */
-
-	down(&dev->struct_sem);
-	irq	 = dev->irq;
-	dev->irq = 0;
-	up(&dev->struct_sem);
-
-	if (!irq) return -EINVAL;
-
-   	DRM_DEBUG(  "Interrupt UnInstall: %d\n", irq);
-	DRM_DEBUG("%d\n", irq);
-
-   	temp = I810_READ16(I810REG_INT_IDENTITY_R);
-   	temp = temp & ~(0x6000);
-   	if(temp != 0) I810_WRITE16(I810REG_INT_IDENTITY_R,
-				   temp); /* Clear all interrupts */
-
-   	temp = I810_READ16(I810REG_INT_ENABLE_R);
-   	temp = temp & 0x6000;
-   	I810_WRITE16(I810REG_INT_ENABLE_R,
-		     temp);                     /* Disable all interrupts */
-
-   	free_irq(irq, dev);
-
-	return 0;
-}
-
-int i810_control(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_control_t	ctl;
-	int		retcode;
-
-   	DRM_DEBUG(  "i810_control\n");
-
-	if (copy_from_user(&ctl, (drm_control_t *)arg, sizeof(ctl)))
-		return -EFAULT;
-
-	switch (ctl.func) {
-	case DRM_INST_HANDLER:
-		if ((retcode = i810_irq_install(dev, ctl.irq)))
-			return retcode;
-		break;
-	case DRM_UNINST_HANDLER:
-		if ((retcode = i810_irq_uninstall(dev)))
-			return retcode;
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
 static inline void i810_dma_emit_flush(drm_device_t *dev)
 {
    	drm_i810_private_t *dev_priv = dev->dev_private;
diff --git a/linux/i810_drv.c b/linux/i810_drv.c
index 635bdc6d..12a59dbf 100644
--- a/linux/i810_drv.c
+++ b/linux/i810_drv.c
@@ -56,47 +56,26 @@
    	[DRM_IOCTL_NR(DRM_IOCTL_I810_COPY)]   = { i810_copybuf,     1, 0 }, \
    	[DRM_IOCTL_NR(DRM_IOCTL_I810_DOCOPY)] = { i810_docopy,      1, 0 },
 
+
 #define __HAVE_COUNTERS         4
 #define __HAVE_COUNTER6         _DRM_STAT_IRQ
 #define __HAVE_COUNTER7         _DRM_STAT_PRIMARY
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 #define __HAVE_COUNTER9         _DRM_STAT_DMA
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT() do {					\
-	i810_dma_quiescent( dev );					\
-} while (0)
-
-#define __HAVE_RELEASE		1
-#define DRIVER_RELEASE() do {						\
-	i810_reclaim_buffers( dev, priv->pid );				\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_i810_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-({									\
-	drm_i810_private_t *dev_priv = (dev)->dev_private;		\
-	drm_map_t *map = (dev)->maplist[dev_priv->buffer_map_idx];	\
-	map;								\
-})
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
 #include "drm_lock.h"
-#include "drm_lists.h"		/* kw: added for i810_waitlist_destroy */
+#include "drm_lists.h"
 #include "drm_memory.h"
 #include "drm_proc.h"
 #include "drm_vm.h"
diff --git a/linux/i810_drv.h b/linux/i810_drv.h
index e7824093..43d44e02 100644
--- a/linux/i810_drv.h
+++ b/linux/i810_drv.h
@@ -80,12 +80,6 @@ typedef struct drm_i810_private {
 extern int  i810_dma_schedule(drm_device_t *dev, int locked);
 extern int  i810_getbuf(struct inode *inode, struct file *filp,
 			unsigned int cmd, unsigned long arg);
-extern int  i810_irq_install(drm_device_t *dev, int irq);
-extern int  i810_irq_uninstall(drm_device_t *dev);
-extern int  i810_control(struct inode *inode, struct file *filp,
-			  unsigned int cmd, unsigned long arg);
-extern int  i810_lock(struct inode *inode, struct file *filp,
-		       unsigned int cmd, unsigned long arg);
 extern int  i810_dma_init(struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg);
 extern int  i810_flush_ioctl(struct inode *inode, struct file *filp,
@@ -113,6 +107,19 @@ int i810_swap_bufs(struct inode *inode, struct file *filp,
 int i810_clear_bufs(struct inode *inode, struct file *filp,
 		    unsigned int cmd, unsigned long arg);
 
+
+#define I810_REG(reg)		2
+#define I810_BASE(reg)		((unsigned long) \
+				dev->maplist[I810_REG(reg)]->handle)
+#define I810_ADDR(reg)		(I810_BASE(reg) + reg)
+#define I810_DEREF(reg)		*(__volatile__ int *)I810_ADDR(reg)
+#define I810_READ(reg)		I810_DEREF(reg)
+#define I810_WRITE(reg,val) 	do { I810_DEREF(reg) = val; } while (0)
+#define I810_DEREF16(reg)	*(__volatile__ u16 *)I810_ADDR(reg)
+#define I810_READ16(reg)	I810_DEREF16(reg)
+#define I810_WRITE16(reg,val)	do { I810_DEREF16(reg) = val; } while (0)
+
+
 #define GFX_OP_USER_INTERRUPT 		((0<<29)|(2<<23))
 #define GFX_OP_BREAKPOINT_INTERRUPT	((0<<29)|(1<<23))
 #define CMD_REPORT_HEAD			(7<<23)
diff --git a/linux/mga.h b/linux/mga.h
index 9b222404..277aa202 100644
--- a/linux/mga.h
+++ b/linux/mga.h
@@ -34,13 +34,34 @@
  */
 #define DRM(x) mga_##x
 
+/* General customization:
+ */
 #define __HAVE_AGP		1
 #define __MUST_HAVE_AGP		1
-
 #define __HAVE_MTRR		1
-
 #define __HAVE_CTX_BITMAP	1
 
+/* Driver customization:
+ */
+#define DRIVER_PRETAKEDOWN() do {					\
+	if ( dev->dev_private ) mga_do_cleanup_dma( dev );		\
+} while (0)
+
+/* DMA customization:
+ */
 #define __HAVE_DMA		1
 
+#define __HAVE_DMA_QUIESCENT	1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	drm_mga_private_t *dev_priv = dev->dev_private;			\
+	return mga_do_wait_for_idle( dev_priv );			\
+} while (0)
+
+/* Buffer customization:
+ */
+#define DRIVER_BUF_PRIV_T	drm_mga_buf_priv_t
+
+#define DRIVER_AGP_BUFFERS_MAP( dev )					\
+	((drm_mga_private_t *)((dev)->dev_private))->buffers
+
 #endif
diff --git a/linux/mga_dma.c b/linux/mga_dma.c
index c54a588e..b1491823 100644
--- a/linux/mga_dma.c
+++ b/linux/mga_dma.c
@@ -396,7 +396,7 @@ static drm_buf_t *mga_freelist_get( drm_device_t *dev )
 	return NULL;
 }
 
-static int mga_freelist_put( drm_device_t *dev, drm_buf_t *buf )
+int mga_freelist_put( drm_device_t *dev, drm_buf_t *buf )
 {
 	drm_mga_private_t *dev_priv = dev->dev_private;
 	drm_mga_buf_priv_t *buf_priv = buf->dev_private;
diff --git a/linux/mga_drv.c b/linux/mga_drv.c
index 7898c744..88fa53a6 100644
--- a/linux/mga_drv.c
+++ b/linux/mga_drv.c
@@ -38,7 +38,7 @@
 
 #define DRIVER_NAME		"mga"
 #define DRIVER_DESC		"Matrox G200/G400"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		3
 #define DRIVER_MINOR		0
@@ -56,38 +56,20 @@
 	[DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)]   = { mga_dma_iload,   1, 0 }, \
 	[DRM_IOCTL_NR(DRM_IOCTL_MGA_BLIT)]    = { mga_dma_blit,    1, 0 },
 
+
 #define __HAVE_COUNTERS         3
 #define __HAVE_COUNTER6         _DRM_STAT_IRQ
 #define __HAVE_COUNTER7         _DRM_STAT_PRIMARY
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT()						\
-do {									\
-	drm_mga_private_t *dev_priv = dev->dev_private;			\
-	return mga_do_wait_for_idle( dev_priv );			\
-} while (0)
-
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) mga_do_cleanup_dma( dev );		\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_mga_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-	((drm_mga_private_t *)((dev)->dev_private))->buffers
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux/mga_drv.h b/linux/mga_drv.h
index 7a5a1dcc..be7298df 100644
--- a/linux/mga_drv.h
+++ b/linux/mga_drv.h
@@ -102,18 +102,6 @@ typedef struct drm_mga_private {
 	drm_map_t *agp_textures;
 } drm_mga_private_t;
 
-				/* mga_drv.c */
-extern int mga_version( struct inode *inode, struct file *filp,
-			unsigned int cmd, unsigned long arg );
-extern int mga_open( struct inode *inode, struct file *filp );
-extern int mga_release( struct inode *inode, struct file *filp );
-extern int mga_ioctl( struct inode *inode, struct file *filp,
-		      unsigned int cmd, unsigned long arg );
-extern int mga_lock( struct inode *inode, struct file *filp,
-		     unsigned int cmd, unsigned long arg );
-extern int mga_unlock( struct inode *inode, struct file *filp,
-		       unsigned int cmd, unsigned long arg );
-
 				/* mga_dma.c */
 extern int mga_dma_init( struct inode *inode, struct file *filp,
 			 unsigned int cmd, unsigned long arg );
@@ -121,8 +109,6 @@ extern int mga_dma_flush( struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg );
 extern int mga_dma_reset( struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg );
-extern int mga_control( struct inode *inode, struct file *filp,
-			unsigned int cmd, unsigned long arg );
 extern int mga_dma_buffers( struct inode *inode, struct file *filp,
 			    unsigned int cmd, unsigned long arg );
 
@@ -136,7 +122,8 @@ extern void mga_do_dma_flush( drm_mga_private_t *dev_priv );
 extern void mga_do_dma_wrap_start( drm_mga_private_t *dev_priv );
 extern void mga_do_dma_wrap_end( drm_mga_private_t *dev_priv );
 
-extern int mga_irq_uninstall( drm_device_t *dev );
+extern int mga_freelist_put( drm_device_t *dev, drm_buf_t *buf );
+
 
 				/* mga_state.c */
 extern int  mga_dma_clear( struct inode *inode, struct file *filp,
diff --git a/linux/r128.h b/linux/r128.h
index 0440501e..2f045534 100644
--- a/linux/r128.h
+++ b/linux/r128.h
@@ -34,13 +34,43 @@
  */
 #define DRM(x) r128_##x
 
+/* General customization:
+ */
 #define __HAVE_AGP		1
 #define __MUST_HAVE_AGP		1
-
 #define __HAVE_MTRR		1
-
 #define __HAVE_CTX_BITMAP	1
 
+/* Driver customization:
+ */
+#define DRIVER_PRERELEASE() do {					\
+	if ( dev->dev_private ) {					\
+		drm_r128_private_t *dev_priv = dev->dev_private;	\
+		if ( dev_priv->page_flipping ) {			\
+			r128_do_cleanup_pageflip( dev );		\
+		}							\
+	}								\
+} while (0)
+
+#define DRIVER_PRETAKEDOWN() do {					\
+	if ( dev->dev_private ) r128_do_cleanup_cce( dev );		\
+} while (0)
+
+/* DMA customization:
+ */
 #define __HAVE_DMA		1
 
+#define __HAVE_DMA_QUIESCENT	1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	drm_r128_private_t *dev_priv = dev->dev_private;		\
+	return r128_do_cce_idle( dev_priv );				\
+} while (0)
+
+/* Buffer customization:
+ */
+#define DRIVER_BUF_PRIV_T	drm_r128_buf_priv_t
+
+#define DRIVER_AGP_BUFFERS_MAP( dev )					\
+	((drm_r128_private_t *)((dev)->dev_private))->buffers
+
 #endif
diff --git a/linux/r128_cce.c b/linux/r128_cce.c
index 05ae9590..d1790497 100644
--- a/linux/r128_cce.c
+++ b/linux/r128_cce.c
@@ -25,7 +25,7 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *   Gareth Hughes <gareth@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
  */
 
 #define __NO_VERSION__
diff --git a/linux/r128_drm.h b/linux/r128_drm.h
index aaf2ce3e..86aba175 100644
--- a/linux/r128_drm.h
+++ b/linux/r128_drm.h
@@ -25,9 +25,8 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *    Kevin E. Martin <martin@valinux.com>
  *    Gareth Hughes <gareth@valinux.com>
- *
+ *    Kevin E. Martin <martin@valinux.com>
  */
 
 #ifndef __R128_DRM_H__
diff --git a/linux/r128_drv.c b/linux/r128_drv.c
index 3bd27ae7..e42868ed 100644
--- a/linux/r128_drv.c
+++ b/linux/r128_drv.c
@@ -38,7 +38,7 @@
 
 #define DRIVER_NAME		"r128"
 #define DRIVER_DESC		"ATI Rage 128"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		2
 #define DRIVER_MINOR		1
@@ -62,6 +62,7 @@
    [DRM_IOCTL_NR(DRM_IOCTL_R128_STIPPLE)]    = { r128_cce_stipple,  1, 0 }, \
    [DRM_IOCTL_NR(DRM_IOCTL_R128_INDIRECT)]   = { r128_cce_indirect, 1, 1 },
 
+
 #if 0
 /* GH: Count data sent to card via ring or vertex/indirect buffers.
  */
@@ -71,41 +72,14 @@
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 #endif
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT() do {					\
-	drm_r128_private_t *dev_priv = dev->dev_private;		\
-	return r128_do_cce_idle( dev_priv );				\
-} while (0)
-
-#define DRIVER_PRERELEASE() do {					\
-	if ( dev->dev_private ) {					\
-		drm_r128_private_t *dev_priv = dev->dev_private;	\
-		if ( dev_priv->page_flipping ) {			\
-			r128_do_cleanup_pageflip( dev );		\
-		}							\
-	}								\
-} while (0)
-
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) r128_do_cleanup_cce( dev );		\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_r128_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-	((drm_r128_private_t *)((dev)->dev_private))->buffers
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux/r128_drv.h b/linux/r128_drv.h
index 950a4711..ba11f5b4 100644
--- a/linux/r128_drv.h
+++ b/linux/r128_drv.h
@@ -25,10 +25,9 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *   Rickard E. (Rik) Faith <faith@valinux.com>
- *   Kevin E. Martin <martin@valinux.com>
- *   Gareth Hughes <gareth@valinux.com>
- *
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Kevin E. Martin <martin@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
  */
 
 #ifndef __R128_DRV_H__
@@ -440,8 +439,7 @@ do {									\
 	}								\
 } while (0)
 
-#define R128_WAIT_UNTIL_PAGE_FLIPPED()					\
-do {									\
+#define R128_WAIT_UNTIL_PAGE_FLIPPED() do {				\
 	OUT_RING( CCE_PACKET0( R128_WAIT_UNTIL, 0 ) );			\
 	OUT_RING( R128_EVENT_CRTC_OFFSET );				\
 } while (0)
diff --git a/linux/r128_state.c b/linux/r128_state.c
index a4683c4e..fa16f3ce 100644
--- a/linux/r128_state.c
+++ b/linux/r128_state.c
@@ -25,7 +25,6 @@
  *
  * Authors:
  *    Gareth Hughes <gareth@valinux.com>
- *
  */
 
 #define __NO_VERSION__
diff --git a/linux/radeon.h b/linux/radeon.h
index 6ef99277..6062f82f 100644
--- a/linux/radeon.h
+++ b/linux/radeon.h
@@ -34,13 +34,43 @@
  */
 #define DRM(x) radeon_##x
 
+/* General customization:
+ */
 #define __HAVE_AGP		1
 #define __MUST_HAVE_AGP		1
-
 #define __HAVE_MTRR		1
-
 #define __HAVE_CTX_BITMAP	1
 
+/* Driver customization:
+ */
+#define DRIVER_PRERELEASE() do {					\
+	if ( dev->dev_private ) {					\
+		drm_radeon_private_t *dev_priv = dev->dev_private;	\
+		if ( dev_priv->page_flipping ) {			\
+			radeon_do_cleanup_pageflip( dev );		\
+		}							\
+	}								\
+} while (0)
+
+#define DRIVER_PRETAKEDOWN() do {					\
+	if ( dev->dev_private ) radeon_do_cleanup_cp( dev );		\
+} while (0)
+
+/* DMA customization:
+ */
 #define __HAVE_DMA		1
 
+#define __HAVE_DMA_QUIESCENT	1
+#define DRIVER_DMA_QUIESCENT() do {					\
+	drm_radeon_private_t *dev_priv = dev->dev_private;		\
+	return radeon_do_cp_idle( dev_priv );				\
+} while (0)
+
+/* Buffer customization:
+ */
+#define DRIVER_BUF_PRIV_T	drm_radeon_buf_priv_t
+
+#define DRIVER_AGP_BUFFERS_MAP( dev )					\
+	((drm_radeon_private_t *)((dev)->dev_private))->buffers
+
 #endif
diff --git a/linux/radeon_cp.c b/linux/radeon_cp.c
index 75b24eee..2f20806c 100644
--- a/linux/radeon_cp.c
+++ b/linux/radeon_cp.c
@@ -24,9 +24,8 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *   Kevin E. Martin <martin@valinux.com>
- *   Gareth Hughes <gareth@valinux.com>
- *
+ *    Kevin E. Martin <martin@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
  */
 
 #define __NO_VERSION__
diff --git a/linux/radeon_drm.h b/linux/radeon_drm.h
index 643253d2..a7d7a71b 100644
--- a/linux/radeon_drm.h
+++ b/linux/radeon_drm.h
@@ -26,7 +26,6 @@
  * Authors:
  *    Kevin E. Martin <martin@valinux.com>
  *    Gareth Hughes <gareth@valinux.com>
- *
  */
 
 #ifndef __RADEON_DRM_H__
diff --git a/linux/radeon_drv.c b/linux/radeon_drv.c
index 43f6e2e7..cf59f866 100644
--- a/linux/radeon_drv.c
+++ b/linux/radeon_drv.c
@@ -36,7 +36,7 @@
 
 #define DRIVER_NAME		"radeon"
 #define DRIVER_DESC		"ATI Radeon"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		1
 #define DRIVER_MINOR		0
@@ -59,6 +59,7 @@
  [DRM_IOCTL_NR(DRM_IOCTL_RADEON_STIPPLE)]    = { radeon_cp_stipple,  1, 0 }, \
  [DRM_IOCTL_NR(DRM_IOCTL_RADEON_INDIRECT)]   = { radeon_cp_indirect, 1, 1 },
 
+
 #if 0
 /* GH: Count data sent to card via ring or vertex/indirect buffers.
  */
@@ -68,41 +69,14 @@
 #define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
 #endif
 
-#define __HAVE_DMA_QUIESCENT	1
-#define DRIVER_DMA_QUIESCENT() do {					\
-	drm_radeon_private_t *dev_priv = dev->dev_private;		\
-	return radeon_do_cp_idle( dev_priv );				\
-} while (0)
-
-#define DRIVER_PRERELEASE() do {					\
-	if ( dev->dev_private ) {					\
-		drm_radeon_private_t *dev_priv = dev->dev_private;	\
-		if ( dev_priv->page_flipping ) {			\
-			radeon_do_cleanup_pageflip( dev );		\
-		}							\
-	}								\
-} while (0)
-
-#define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) radeon_do_cleanup_cp( dev );		\
-} while (0)
-
-#include "drm_drv.h"
-
-
-#define DRIVER_BUF_PRIV_T	drm_radeon_buf_priv_t
-
-#define DRIVER_AGP_BUFFERS_MAP( dev )					\
-	((drm_radeon_private_t *)((dev)->dev_private))->buffers
-
-#include "drm_bufs.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
+#include "drm_bufs.h"
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"
diff --git a/linux/radeon_drv.h b/linux/radeon_drv.h
index 656d6e03..e67a610f 100644
--- a/linux/radeon_drv.h
+++ b/linux/radeon_drv.h
@@ -24,10 +24,8 @@
  * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *   Rickard E. (Rik) Faith <faith@valinux.com>
- *   Kevin E. Martin <martin@valinux.com>
- *   Gareth Hughes <gareth@valinux.com>
- *
+ *    Kevin E. Martin <martin@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
  */
 
 #ifndef __RADEON_DRV_H__
@@ -504,25 +502,23 @@ extern int radeon_cp_indirect( struct inode *inode, struct file *filp,
 
 
 #define RADEON_BASE(reg)	((u32)(dev_priv->mmio->handle))
-#define RADEON_ADDR(reg)	(RADEON_BASE(reg) + reg)
+#define RADEON_ADDR(reg)	(RADEON_BASE( reg ) + reg)
 
-#define RADEON_DEREF(reg)	*(volatile u32 *)RADEON_ADDR(reg)
-#define RADEON_READ(reg)	RADEON_DEREF(reg)
-#define RADEON_WRITE(reg,val)	do { RADEON_DEREF(reg) = val; } while (0)
+#define RADEON_DEREF(reg)	*(volatile u32 *)RADEON_ADDR( reg )
+#define RADEON_READ(reg)	RADEON_DEREF( reg )
+#define RADEON_WRITE(reg, val)	do { RADEON_DEREF( reg ) = val; } while (0)
 
-#define RADEON_DEREF8(reg)	*(volatile u8 *)RADEON_ADDR(reg)
-#define RADEON_READ8(reg)	RADEON_DEREF8(reg)
-#define RADEON_WRITE8(reg,val)	do { RADEON_DEREF8(reg) = val; } while (0)
+#define RADEON_DEREF8(reg)	*(volatile u8 *)RADEON_ADDR( reg )
+#define RADEON_READ8(reg)	RADEON_DEREF8( reg )
+#define RADEON_WRITE8(reg, val)	do { RADEON_DEREF8( reg ) = val; } while (0)
 
-#define RADEON_WRITE_PLL(addr,val)                                            \
-do {                                                                          \
-	RADEON_WRITE8(RADEON_CLOCK_CNTL_INDEX,                                \
-		      ((addr) & 0x1f) | RADEON_PLL_WR_EN);                    \
-	RADEON_WRITE(RADEON_CLOCK_CNTL_DATA, (val));                          \
+#define RADEON_WRITE_PLL( addr, val ) do {				\
+	RADEON_WRITE8( RADEON_CLOCK_CNTL_INDEX,				\
+		       ((addr) & 0x1f) | RADEON_PLL_WR_EN );		\
+	RADEON_WRITE( RADEON_CLOCK_CNTL_DATA, (val) );			\
 } while (0)
 
-extern int RADEON_READ_PLL(drm_device_t *dev, int addr);
-
+extern int RADEON_READ_PLL( drm_device_t *dev, int addr );
 
 
 #define CP_PACKET0( reg, n )						\
@@ -541,54 +537,46 @@ extern int RADEON_READ_PLL(drm_device_t *dev, int addr);
  * Engine control helper macros
  */
 
-#define RADEON_WAIT_UNTIL_2D_IDLE()					\
-do {									\
+#define RADEON_WAIT_UNTIL_2D_IDLE() do {				\
 	OUT_RING( CP_PACKET0( RADEON_WAIT_UNTIL, 0 ) );			\
 	OUT_RING( (RADEON_WAIT_2D_IDLECLEAN |				\
 		   RADEON_WAIT_HOST_IDLECLEAN) );			\
 } while (0)
 
-#define RADEON_WAIT_UNTIL_3D_IDLE()					\
-do {									\
+#define RADEON_WAIT_UNTIL_3D_IDLE() do {				\
 	OUT_RING( CP_PACKET0( RADEON_WAIT_UNTIL, 0 ) );			\
 	OUT_RING( (RADEON_WAIT_3D_IDLECLEAN |				\
 		   RADEON_WAIT_HOST_IDLECLEAN) );			\
 } while (0)
 
-#define RADEON_WAIT_UNTIL_IDLE()					\
-do {									\
+#define RADEON_WAIT_UNTIL_IDLE() do {					\
 	OUT_RING( CP_PACKET0( RADEON_WAIT_UNTIL, 0 ) );			\
 	OUT_RING( (RADEON_WAIT_2D_IDLECLEAN |				\
 		   RADEON_WAIT_3D_IDLECLEAN |				\
 		   RADEON_WAIT_HOST_IDLECLEAN) );			\
 } while (0)
 
-#define RADEON_WAIT_UNTIL_PAGE_FLIPPED()				\
-do {									\
+#define RADEON_WAIT_UNTIL_PAGE_FLIPPED() do {				\
 	OUT_RING( CP_PACKET0( RADEON_WAIT_UNTIL, 0 ) );			\
 	OUT_RING( RADEON_WAIT_CRTC_PFLIP );				\
 } while (0)
 
-#define RADEON_FLUSH_CACHE()						\
-do {									\
+#define RADEON_FLUSH_CACHE() do {					\
 	OUT_RING( CP_PACKET0( RADEON_RB2D_DSTCACHE_CTLSTAT, 0 ) );	\
 	OUT_RING( RADEON_RB2D_DC_FLUSH );				\
 } while (0)
 
-#define RADEON_PURGE_CACHE()						\
-do {									\
+#define RADEON_PURGE_CACHE() do {					\
 	OUT_RING( CP_PACKET0( RADEON_RB2D_DSTCACHE_CTLSTAT, 0 ) );	\
 	OUT_RING( RADEON_RB2D_DC_FLUSH_ALL );				\
 } while (0)
 
-#define RADEON_FLUSH_ZCACHE()						\
-do {									\
+#define RADEON_FLUSH_ZCACHE() do {					\
 	OUT_RING( CP_PACKET0( RADEON_RB3D_ZCACHE_CTLSTAT, 0 ) );	\
 	OUT_RING( RADEON_RB3D_ZC_FLUSH );				\
 } while (0)
 
-#define RADEON_PURGE_ZCACHE()						\
-do {									\
+#define RADEON_PURGE_ZCACHE() do {					\
 	OUT_RING( CP_PACKET0( RADEON_RB3D_ZCACHE_CTLSTAT, 0 ) );	\
 	OUT_RING( RADEON_RB3D_ZC_FLUSH_ALL );				\
 } while (0)
@@ -627,20 +615,17 @@ do {									\
 	}								\
 } while (0)
 
-#define RADEON_DISPATCH_AGE( age )					\
-do {									\
+#define RADEON_DISPATCH_AGE( age ) do {					\
 	OUT_RING( CP_PACKET0( RADEON_LAST_DISPATCH_REG, 0 ) );		\
 	OUT_RING( age );						\
 } while (0)
 
-#define RADEON_FRAME_AGE( age )						\
-do {									\
+#define RADEON_FRAME_AGE( age ) do {					\
 	OUT_RING( CP_PACKET0( RADEON_LAST_FRAME_REG, 0 ) );		\
 	OUT_RING( age );						\
 } while (0)
 
-#define RADEON_CLEAR_AGE( age )						\
-do {									\
+#define RADEON_CLEAR_AGE( age ) do {					\
 	OUT_RING( CP_PACKET0( RADEON_LAST_CLEAR_REG, 0 ) );		\
 	OUT_RING( age );						\
 } while (0)
diff --git a/linux/tdfx.h b/linux/tdfx.h
index 6af675ff..40aba8fb 100644
--- a/linux/tdfx.h
+++ b/linux/tdfx.h
@@ -34,6 +34,8 @@
  */
 #define DRM(x) tdfx_##x
 
+/* General customization:
+ */
 #define __HAVE_MTRR		1
 #define __HAVE_CTX_BITMAP	1
 
diff --git a/linux/tdfx_drv.c b/linux/tdfx_drv.c
index e8d7955c..71d065f1 100644
--- a/linux/tdfx_drv.c
+++ b/linux/tdfx_drv.c
@@ -38,14 +38,12 @@
 
 #define DRIVER_NAME		"tdfx"
 #define DRIVER_DESC		"3dfx Banshee/Voodoo3+"
-#define DRIVER_DATE		"20010215"
+#define DRIVER_DATE		"20010216"
 
 #define DRIVER_MAJOR		1
 #define DRIVER_MINOR		0
 #define DRIVER_PATCHLEVEL	0
 
-#include "drm_drv.h"
-
 
 #include "drm_agpsupport.h"
 #include "drm_auth.h"
@@ -53,6 +51,7 @@
 #include "drm_context.h"
 #include "drm_dma.h"
 #include "drm_drawable.h"
+#include "drm_drv.h"
 #include "drm_fops.h"
 #include "drm_init.h"
 #include "drm_ioctl.h"