Merge 'drm-3264' branch of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

drivers/char/drm/Makefile

@@ -19,6 +19,11 @@ radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o
 ffb-objs    := ffb_drv.o ffb_context.o
 sis-objs    := sis_drv.o sis_ds.o sis_mm.o
 
+ifeq ($(CONFIG_COMPAT),y)
+drm-objs    += drm_ioc32.o
+radeon-objs += radeon_ioc32.o
+endif
+
 obj-$(CONFIG_DRM)	+= drm.o
 obj-$(CONFIG_DRM_GAMMA) += gamma.o
 obj-$(CONFIG_DRM_TDFX)	+= tdfx.o

drivers/char/drm/drmP.h

@@ -316,6 +316,9 @@ do {									\
 typedef int drm_ioctl_t( struct inode *inode, struct file *filp,
 			 unsigned int cmd, unsigned long arg );
 
+typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
+			       unsigned long arg);
+
 typedef struct drm_ioctl_desc {
 	drm_ioctl_t	     *func;
 	int		     auth_needed;
@@ -775,6 +778,8 @@ extern int           drm_version(struct inode *inode, struct file *filp,
 				  unsigned int cmd, unsigned long arg);
 extern int           drm_ioctl(struct inode *inode, struct file *filp,
 				unsigned int cmd, unsigned long arg);
+extern long	     drm_compat_ioctl(struct file *filp,
+				unsigned int cmd, unsigned long arg);
 extern int           drm_takedown(drm_device_t * dev);
 
 				/* Device support (drm_fops.h) */

drivers/char/drm/drm_bufs.c

@@ -60,6 +60,15 @@ int drm_order( unsigned long size )
 }
 EXPORT_SYMBOL(drm_order);
 
+#ifdef CONFIG_COMPAT
+/*
+ * Used to allocate 32-bit handles for _DRM_SHM regions
+ * The 0x10000000 value is chosen to be out of the way of
+ * FB/register and GART physical addresses.
+ */
+static unsigned int map32_handle = 0x10000000;
+#endif
+
 /**
  * Ioctl to specify a range of memory that is available for mapping by a non-root process.
  *
@@ -187,16 +196,18 @@ int drm_addmap( struct inode *inode, struct file *filp,
 
 	down(&dev->struct_sem);
 	list_add(&list->head, &dev->maplist->head);
+#ifdef CONFIG_COMPAT
+	/* Assign a 32-bit handle for _DRM_SHM mappings */
+	/* We do it here so that dev->struct_sem protects the increment */
+	if (map->type == _DRM_SHM)
+		map->offset = map32_handle += PAGE_SIZE;
+#endif
  	up(&dev->struct_sem);
 
 	if ( copy_to_user( argp, map, sizeof(*map) ) )
 		return -EFAULT;
-	if ( map->type != _DRM_SHM ) {
-		if ( copy_to_user( &argp->handle,
-				   &map->offset,
-				   sizeof(map->offset) ) )
-			return -EFAULT;
-	}
+	if (copy_to_user(&argp->handle, &map->offset, sizeof(map->offset)))
+		return -EFAULT;
 	return 0;
 }
 
@@ -240,7 +251,7 @@ int drm_rmmap(struct inode *inode, struct file *filp,
 		r_list = list_entry(list, drm_map_list_t, head);
 
 		if(r_list->map &&
-		   r_list->map->handle == request.handle &&
+		   r_list->map->offset == (unsigned long) request.handle &&
 		   r_list->map->flags & _DRM_REMOVABLE) break;
 	}
 

drivers/char/drm/drm_context.c

@@ -225,7 +225,7 @@ int drm_getsareactx(struct inode *inode, struct file *filp,
 	map = dev->context_sareas[request.ctx_id];
 	up(&dev->struct_sem);
 
-	request.handle = map->handle;
+	request.handle = (void *) map->offset;
 	if (copy_to_user(argp, &request, sizeof(request)))
 		return -EFAULT;
 	return 0;
@@ -261,8 +261,8 @@ int drm_setsareactx(struct inode *inode, struct file *filp,
 	down(&dev->struct_sem);
 	list_for_each(list, &dev->maplist->head) {
 		r_list = list_entry(list, drm_map_list_t, head);
-		if(r_list->map &&
-		   r_list->map->handle == request.handle)
+		if (r_list->map
+		    && r_list->map->offset == (unsigned long) request.handle)
 			goto found;
 	}
 bad:

drivers/char/drm/radeon_drv.c

@@ -101,6 +101,9 @@ static struct drm_driver driver = {
 		.mmap = drm_mmap,
 		.poll = drm_poll,
 		.fasync = drm_fasync,
+#ifdef CONFIG_COMPAT
+		.compat_ioctl = radeon_compat_ioctl,
+#endif
 	},
 	.pci_driver = {
 		.name          = DRIVER_NAME,

drivers/char/drm/radeon_drv.h

@@ -317,6 +317,9 @@ extern int radeon_preinit( struct drm_device *dev, unsigned long flags );
 extern int radeon_postinit( struct drm_device *dev, unsigned long flags );
 extern int radeon_postcleanup( struct drm_device *dev );
 
+extern long radeon_compat_ioctl(struct file *filp, unsigned int cmd,
+				unsigned long arg);
+
 /* Flags for stats.boxes
  */
 #define RADEON_BOX_DMA_IDLE      0x1