Attachment 2011 Details for Bug 943 – Patch to add ioctl compatibility routines for 32-bit processes

[patch] Patch to add ioctl compatibility routines for 32-bit processes

drm-64b.patch (text/plain), 53.09 KB, created by Paul Mackerras on 2005-03-03 01:21:05 UTC

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Creator: Paul Mackerras

Created: 2005-03-03 01:21:05 UTC

Size: 53.09 KB

patch

obsolete

>diff -urN linux-2.5/drivers/char/drm/Makefile test/drivers/char/drm/Makefile
>--- linux-2.5/drivers/char/drm/Makefile	2005-02-03 18:00:27.000000000 +1100
>+++ test/drivers/char/drm/Makefile	2005-03-03 19:45:56.000000000 +1100
>@@ -19,6 +19,11 @@
> 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
>diff -urN linux-2.5/drivers/char/drm/drmP.h test/drivers/char/drm/drmP.h
>--- linux-2.5/drivers/char/drm/drmP.h	2005-02-03 18:00:27.000000000 +1100
>+++ test/drivers/char/drm/drmP.h	2005-03-03 19:45:56.000000000 +1100
>@@ -527,6 +527,9 @@
> typedef struct drm_map_list {
> 	struct list_head	head;	/**< list head */
> 	drm_map_t		*map;	/**< mapping */
>+#ifdef CONFIG_COMPAT
>+	u32			handle32;
>+#endif
> } drm_map_list_t;
> 
> typedef drm_map_t drm_local_map_t;
>@@ -1032,6 +1035,10 @@
> 		     _entry->map->offset == offset ) {
> 			return _entry->map;
> 		}
>+#ifdef CONFIG_COMPAT
>+		if (offset && _entry->map && offset == _entry->handle32)
>+			return _entry->map;
>+#endif
> 	}
> 	return NULL;
> }
>@@ -1062,5 +1069,8 @@
> extern unsigned long drm_core_get_map_ofs(drm_map_t *map);
> extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
> 
>+extern int drm_register_ioc32(void);
>+extern void drm_unregister_ioc32(void);
>+
> #endif /* __KERNEL__ */
> #endif
>diff -urN linux-2.5/drivers/char/drm/drm_drv.c test/drivers/char/drm/drm_drv.c
>--- linux-2.5/drivers/char/drm/drm_drv.c	2005-02-10 09:06:38.000000000 +1100
>+++ test/drivers/char/drm/drm_drv.c	2005-03-03 19:45:56.000000000 +1100
>@@ -417,6 +417,10 @@
> 		goto err_p3;
> 	}
> 		
>+#ifdef CONFIG_COMPAT
>+	drm_register_ioc32();
>+#endif
>+
> 	DRM_INFO( "Initialized %s %d.%d.%d %s\n",
> 		DRIVER_NAME,
> 		DRIVER_MAJOR,
>@@ -436,6 +440,9 @@
> 
> static void __exit drm_core_exit (void)
> {
>+#ifdef CONFIG_COMPAT
>+	drm_unregister_ioc32();
>+#endif
> 	remove_proc_entry("dri", NULL);
> 	drm_sysfs_destroy(drm_class);
> 
>diff -urN linux-2.5/drivers/char/drm/drm_ioc32.c test/drivers/char/drm/drm_ioc32.c
>--- /dev/null	2005-02-22 20:41:05.000000000 +1100
>+++ test/drivers/char/drm/drm_ioc32.c	2005-03-03 19:50:42.000000000 +1100
>@@ -0,0 +1,1234 @@
>+/**
>+ * \file drm_ioc32.c
>+ *
>+ * 32-bit ioctl compatibility routines for the DRM.
>+ *
>+ * \author Paul Mackerras <paulus@samba.org>
>+ *
>+ * Copyright (C) Paul Mackerras 2005.
>+ * 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
>+ * THE AUTHOR 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.
>+ */
>+#include <linux/compat.h>
>+#include <linux/ioctl32.h>
>+
>+#include "drmP.h"
>+#include "drm_core.h"
>+
>+#define DRM_IOCTL_VERSION32		DRM_IOWR(0x00, drm_version32_t)
>+#define DRM_IOCTL_GET_UNIQUE32		DRM_IOWR(0x01, drm_unique32_t)
>+#define DRM_IOCTL_GET_MAP32		DRM_IOWR(0x04, drm_map32_t)
>+#define DRM_IOCTL_GET_CLIENT32		DRM_IOWR(0x05, drm_client32_t)
>+#define DRM_IOCTL_GET_STATS32		DRM_IOR( 0x06, drm_stats32_t)
>+
>+#define DRM_IOCTL_SET_UNIQUE32		DRM_IOW( 0x10, drm_unique32_t)
>+#define DRM_IOCTL_ADD_MAP32		DRM_IOWR(0x15, drm_map32_t)
>+#define DRM_IOCTL_ADD_BUFS32		DRM_IOWR(0x16, drm_buf_desc32_t)
>+#define DRM_IOCTL_MARK_BUFS32		DRM_IOW( 0x17, drm_buf_desc32_t)
>+#define DRM_IOCTL_INFO_BUFS32		DRM_IOWR(0x18, drm_buf_info32_t)
>+#define DRM_IOCTL_MAP_BUFS32		DRM_IOWR(0x19, drm_buf_map32_t)
>+#define DRM_IOCTL_FREE_BUFS32		DRM_IOW( 0x1a, drm_buf_free32_t)
>+
>+#define DRM_IOCTL_RM_MAP32		DRM_IOW( 0x1b, drm_map32_t)
>+
>+#define DRM_IOCTL_SET_SAREA_CTX32	DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
>+#define DRM_IOCTL_GET_SAREA_CTX32	DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
>+
>+#define DRM_IOCTL_RES_CTX32		DRM_IOWR(0x26, drm_ctx_res32_t)
>+#define DRM_IOCTL_DMA32			DRM_IOWR(0x29, drm_dma32_t)
>+
>+#define DRM_IOCTL_AGP_ENABLE32		DRM_IOW( 0x32, drm_agp_mode32_t)
>+#define DRM_IOCTL_AGP_INFO32		DRM_IOR( 0x33, drm_agp_info32_t)
>+#define DRM_IOCTL_AGP_ALLOC32		DRM_IOWR(0x34, drm_agp_buffer32_t)
>+#define DRM_IOCTL_AGP_FREE32		DRM_IOW( 0x35, drm_agp_buffer32_t)
>+#define DRM_IOCTL_AGP_BIND32		DRM_IOW( 0x36, drm_agp_binding32_t)
>+#define DRM_IOCTL_AGP_UNBIND32		DRM_IOW( 0x37, drm_agp_binding32_t)
>+
>+#define DRM_IOCTL_SG_ALLOC32		DRM_IOW( 0x38, drm_scatter_gather32_t)
>+#define DRM_IOCTL_SG_FREE32		DRM_IOW( 0x39, drm_scatter_gather32_t)
>+
>+#define DRM_IOCTL_WAIT_VBLANK32		DRM_IOWR(0x3a, drm_wait_vblank32_t)
>+
>+typedef struct drm_version_32 {
>+	int	version_major;	  /**< Major version */
>+	int	version_minor;	  /**< Minor version */
>+	int	version_patchlevel;/**< Patch level */
>+	u32	name_len;	  /**< Length of name buffer */
>+	u32	name;		  /**< Name of driver */
>+	u32	date_len;	  /**< Length of date buffer */
>+	u32	date;		  /**< User-space buffer to hold date */
>+	u32	desc_len;	  /**< Length of desc buffer */
>+	u32	desc;		  /**< User-space buffer to hold desc */
>+} drm_version32_t;
>+
>+static int compat_drm_version(unsigned int fd, unsigned int cmd, 
>+			      unsigned long arg, struct file *file)
>+{
>+	drm_version32_t v32;
>+	drm_version_t version;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&v32, (void __user *) arg, sizeof(v32)))
>+		return -EFAULT;
>+	version.name_len = v32.name_len;
>+	version.name = (void __user *)(unsigned long)v32.name;
>+	version.date_len = v32.date_len;
>+	version.date = (void __user *)(unsigned long)v32.date;
>+	version.desc_len = v32.desc_len;
>+	version.desc = (void __user *)(unsigned long)v32.desc;
>+
>+	if (!access_ok(VERIFY_WRITE, version.name, version.name_len)
>+	    || !access_ok(VERIFY_WRITE, version.date, version.date_len)
>+	    || !access_ok(VERIFY_WRITE, version.desc, version.desc_len))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_VERSION, (unsigned long) &version);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	v32.version_major = version.version_major;
>+	v32.version_minor = version.version_minor;
>+	v32.version_patchlevel = version.version_patchlevel;
>+	v32.name_len = version.name_len;
>+	v32.date_len = version.date_len;
>+	v32.desc_len = version.desc_len;
>+
>+	if (copy_to_user((void __user *) arg, &v32, sizeof(v32)))
>+		return -EFAULT;
>+	return 0;
>+}
>+
>+typedef struct drm_unique32 {
>+	u32 unique_len;	/**< Length of unique */
>+	u32 unique;	/**< Unique name for driver instantiation */
>+} drm_unique32_t;
>+
>+static int compat_drm_getunique(unsigned int fd, unsigned int cmd, 
>+				unsigned long arg, struct file *file)
>+{
>+	drm_unique32_t u32;
>+	drm_unique_t u;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&u32, (void __user *) arg, sizeof(u32)))
>+		return -EFAULT;
>+	u.unique_len = u32.unique_len;
>+	u.unique = (void __user *)(unsigned long) u32.unique;
>+	if (!access_ok(VERIFY_WRITE, u.unique, u.unique_len))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_GET_UNIQUE, (unsigned long) &u);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	u32.unique_len = u.unique_len;
>+	if (copy_to_user((void __user *) arg, &u32, sizeof(u32)))
>+		return -EFAULT;
>+	return 0;
>+}
>+
>+static int compat_drm_setunique(unsigned int fd, unsigned int cmd, 
>+				unsigned long arg, struct file *file)
>+{
>+	drm_unique32_t u32;
>+	drm_unique_t u;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&u32, (void __user *) arg, sizeof(u32)))
>+		return -EFAULT;
>+
>+	u.unique_len = u32.unique_len;
>+	u.unique = (void __user *)(unsigned long) u32.unique;
>+	if (!access_ok(VERIFY_READ, u.unique, u.unique_len))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_SET_UNIQUE, (unsigned long) &u);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_map32 {
>+	u32	offset;	 	/**< Requested physical address (0 for SAREA)*/
>+	u32	size;	 	/**< Requested physical size (bytes) */
>+	drm_map_type_t	type;	/**< Type of memory to map */
>+	drm_map_flags_t flags;	/**< Flags */
>+	u32	handle;		/**< User-space: "Handle" to pass to mmap() */
>+	int	mtrr;		/**< MTRR slot used */
>+} drm_map32_t;
>+
>+static int compat_drm_getmap(unsigned int fd, unsigned int cmd, 
>+			     unsigned long arg, struct file *file)
>+{
>+	drm_map32_t __user *argp = (void __user *)arg;
>+	drm_map32_t m32;
>+	drm_map_t map;
>+	int idx, err;
>+	mm_segment_t oldfs;
>+
>+	if (get_user(idx, &argp->offset))
>+		return -EFAULT;
>+	map.offset = idx;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_GET_MAP, (unsigned long) &map);
>+	set_fs(oldfs);
>+
>+	if (err)
>+		return err;
>+
>+	m32.offset = map.offset;
>+	m32.size   = map.size;
>+	m32.type   = map.type;
>+	m32.flags  = map.flags;
>+	m32.handle = (unsigned long) map.handle;
>+	m32.mtrr   = map.mtrr;
>+
>+	if (copy_to_user(argp, &m32, sizeof(m32)))
>+		return -EFAULT;
>+	return 0;
>+
>+}
>+
>+static unsigned int map32_count = 16;
>+
>+static int compat_drm_addmap(unsigned int fd, unsigned int cmd, 
>+			     unsigned long arg, struct file *file)
>+{
>+	drm_file_t *priv = file->private_data;
>+	drm_device_t *dev = priv->dev;
>+	drm_map32_t __user *argp = (void __user *)arg;
>+	drm_map32_t m32;
>+	drm_map_t map;
>+	drm_map_list_t *list;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&m32, argp, sizeof(m32)))
>+		return -EFAULT;
>+
>+	map.offset = m32.offset;
>+	map.size   = m32.size;
>+	map.type   = m32.type;
>+	map.flags  = m32.flags;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_ADD_MAP, (unsigned long) &map);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	m32.offset = map.offset;
>+	m32.mtrr   = map.mtrr;
>+
>+	if (map.type == _DRM_SHM) {
>+		/* allocate a new 32-bit handle for this mapping */
>+		/* but only for shared memory mappings */
>+		down(&dev->struct_sem);
>+		list_for_each_entry(list, &dev->maplist->head, head) {
>+			if (list->map && list->map->type == map.type
>+			    && list->map->offset == map.offset) {
>+				list->handle32 = ++map32_count << PAGE_SHIFT;
>+				m32.handle = list->handle32;
>+				break;
>+			}
>+		}
>+		up(&dev->struct_sem);
>+	} else {
>+		m32.handle = (unsigned long) map.handle;
>+		if (m32.handle != (unsigned long) map.handle)
>+			printk(KERN_ERR "compat_drm_addmap truncated handle"
>+			       " %p for type %d offset %lx\n", map.handle,
>+			       map.type, map.offset);
>+	}
>+
>+	if (copy_to_user(argp, &m32, sizeof(m32)))
>+		return -EFAULT;
>+
>+	return 0;
>+}
>+
>+static void map_handle32(drm_device_t *dev, u32 handle, void **hret)
>+{
>+	drm_map_list_t *list;
>+
>+	*hret = (void *)(unsigned long) handle;
>+	if (handle == 0)
>+		return;
>+	down(&dev->struct_sem);
>+	list_for_each_entry(list, &dev->maplist->head, head) {
>+		if (list->map && handle == list->handle32) {
>+			*hret = list->map->handle;
>+			break;
>+		}
>+	}
>+	up(&dev->struct_sem);
>+}
>+
>+static void map_handle_to32(drm_device_t *dev, void *handle, u32 *hret)
>+{
>+	drm_map_list_t *list;
>+
>+	*hret = (unsigned long) handle;
>+	down(&dev->struct_sem);
>+	list_for_each_entry(list, &dev->maplist->head, head) {
>+		if (list->map && handle == list->map->handle) {
>+			if (list->handle32)
>+				*hret = list->handle32;
>+			break;
>+		}
>+	}
>+	up(&dev->struct_sem);
>+}
>+
>+static int compat_drm_rmmap(unsigned int fd, unsigned int cmd, 
>+			    unsigned long arg, struct file *file)
>+{
>+	drm_file_t *priv = file->private_data;
>+	drm_device_t *dev = priv->dev;
>+	drm_map32_t __user *argp = (void __user *)arg;
>+	drm_map_t map;
>+	u32 handle;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (get_user(handle, &argp->handle))
>+		return -EFAULT;
>+
>+	map_handle32(dev, handle, &map.handle);
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RM_MAP, (unsigned long) &map);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_client32 {
>+	int	idx;	/**< Which client desired? */
>+	int	auth;	/**< Is client authenticated? */
>+	u32	pid;	/**< Process ID */
>+	u32	uid;	/**< User ID */
>+	u32	magic;	/**< Magic */
>+	u32	iocs;	/**< Ioctl count */
>+} drm_client32_t;
>+
>+static int compat_drm_getclient(unsigned int fd, unsigned int cmd, 
>+				unsigned long arg, struct file *file)
>+{
>+	drm_client32_t c32;
>+	drm_client32_t __user *argp = (void __user *)arg;
>+	drm_client_t client;
>+	int idx, err;
>+	mm_segment_t oldfs;
>+
>+	if (get_user(idx, &argp->idx))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	client.idx = idx;
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_GET_CLIENT, (unsigned long) &client);
>+	set_fs(oldfs);
>+
>+	if (err)
>+		return err;
>+
>+	c32.auth  = client.auth;
>+	c32.pid   = client.pid;
>+	c32.uid   = client.uid;
>+	c32.magic = client.magic;
>+	c32.iocs  = client.iocs;
>+
>+	if (copy_to_user(argp, &c32, sizeof(c32)))
>+		return -EFAULT;
>+	return 0;
>+}
>+
>+typedef struct drm_stats32 {
>+	u32 count;
>+	struct {
>+		u32 value;
>+		drm_stat_type_t type;
>+	} data[15];
>+} drm_stats32_t;
>+
>+static int compat_drm_getstats(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_stats32_t s32;
>+	drm_stats32_t __user *argp = (void __user *)arg;
>+	drm_stats_t stats;
>+	mm_segment_t oldfs;
>+	int i, err;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_GET_STATS, (unsigned long) &stats);
>+	set_fs(oldfs);
>+
>+	if (err)
>+		return err;
>+
>+	s32.count = stats.count;
>+	for (i = 0; i < 15; ++i) {
>+		s32.data[i].value = stats.data[i].value;
>+		s32.data[i].type = stats.data[i].type;
>+	}
>+
>+	if (copy_to_user(argp, &s32, sizeof(s32)))
>+		return -EFAULT;
>+	return 0;
>+}
>+
>+typedef struct drm_buf_desc32 {
>+	int	      count;	 /**< Number of buffers of this size */
>+	int	      size;	 /**< Size in bytes */
>+	int	      low_mark;	 /**< Low water mark */
>+	int	      high_mark; /**< High water mark */
>+	int	      flags;
>+	u32	      agp_start; /**< Start address in the AGP aperture */
>+} drm_buf_desc32_t;
>+
>+static int compat_drm_addbufs(unsigned int fd, unsigned int cmd, 
>+			      unsigned long arg, struct file *file)
>+{
>+	drm_buf_desc32_t b32;
>+	drm_buf_desc32_t __user *argp = (void __user *)arg;
>+	drm_buf_desc_t buf;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&b32, argp, sizeof(b32)))
>+		return -EFAULT;
>+	buf.count = b32.count;
>+	buf.size = b32.size;
>+	buf.low_mark = b32.low_mark;
>+	buf.high_mark = b32.high_mark;
>+	buf.flags = b32.flags;
>+	buf.agp_start = b32.agp_start;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_ADD_BUFS, (unsigned long) &buf);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	b32.count = buf.count;
>+	b32.size = buf.size;
>+	b32.low_mark = buf.low_mark;
>+	b32.high_mark = buf.high_mark;
>+	b32.flags = buf.flags;
>+	b32.agp_start = buf.agp_start;
>+	if (copy_to_user(argp, &b32, sizeof(b32)))
>+		return -EFAULT;
>+
>+	return 0;
>+}
>+
>+static int compat_drm_markbufs(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_buf_desc32_t b32;
>+	drm_buf_desc32_t __user *argp = (void __user *)arg;
>+	drm_buf_desc_t buf;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&b32, argp, sizeof(b32)))
>+		return -EFAULT;
>+	buf.size = b32.size;
>+	buf.low_mark = b32.low_mark;
>+	buf.high_mark = b32.high_mark;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_MARK_BUFS, (unsigned long) &buf);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_buf_info32 {
>+	int	       count;	/**< Entries in list */
>+	u32	       list;
>+} drm_buf_info32_t;
>+
>+static int compat_drm_infobufs(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_buf_info32_t req32;
>+	drm_buf_info32_t __user *argp = (void __user *)arg;
>+	drm_buf_desc32_t __user *to;
>+	drm_buf_info_t request;
>+	drm_buf_desc_t *list = NULL;
>+	int i, err;
>+	int count;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user( &request, argp, sizeof(request)))
>+		return -EFAULT;
>+	count = req32.count;
>+	to = (drm_buf_desc32_t __user *)(unsigned long) req32.list;
>+
>+	if (count > 0) {
>+		if (count > DRM_MAX_ORDER + 2)
>+			count = DRM_MAX_ORDER + 2;
>+		if (!access_ok(VERIFY_WRITE, to,
>+			       count * sizeof(drm_buf_desc32_t)))
>+			return -EFAULT;
>+		list = kmalloc(count * sizeof(drm_buf_desc_t), GFP_KERNEL);
>+		if (list == NULL)
>+			return -ENOMEM;
>+	}
>+
>+	request.count = count;
>+	request.list = (drm_buf_desc_t __user *) list;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_INFO_BUFS, (unsigned long) &request);
>+	set_fs(oldfs);
>+	if (err)
>+		goto out;
>+
>+	err = -EFAULT;
>+	if (count >= request.count) {
>+		for (i = 0; i < request.count; ++i) {
>+			if (__put_user(list[i].count, &to->count) ||
>+			    __put_user(list[i].size, &to->size) ||
>+			    __put_user(list[i].low_mark, &to->low_mark) ||
>+			    __put_user(list[i].high_mark, &to->high_mark))
>+				goto out;
>+			++to;
>+		}
>+	}
>+
>+	request.count = count;
>+	if (copy_to_user(argp, &request, sizeof(request)))
>+		goto out;
>+	err = 0;
>+
>+ out:
>+	kfree(list);
>+	return err;
>+}
>+
>+typedef struct drm_buf_pub32 {
>+	int	idx;		/**< Index into the master buffer list */
>+	int	total;		/**< Buffer size */
>+	int	used;		/**< Amount of buffer in use (for DMA) */
>+	u32	address;	/**< Address of buffer */
>+} drm_buf_pub32_t;
>+
>+typedef struct drm_buf_map32 {
>+	int	count;		/**< Length of the buffer list */
>+	u32	virtual;	/**< Mmap'd area in user-virtual */
>+	u32	list;		/**< Buffer information */
>+} drm_buf_map32_t;
>+
>+static int compat_drm_mapbufs(unsigned int fd, unsigned int cmd, 
>+			      unsigned long arg, struct file *file)
>+{
>+	drm_buf_map32_t req32;
>+	drm_buf_pub32_t __user *list32;
>+	drm_buf_map_t request;
>+	drm_buf_pub_t *list;
>+	drm_buf_map32_t __user *argp = (void __user *)arg;
>+	mm_segment_t oldfs;
>+	int i, err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+
>+	if (req32.count < 0 || req32.count > 100)
>+		return -EINVAL;		/* somewhat arbitrary limit */
>+	list = kmalloc(req32.count * sizeof(drm_buf_pub_t), GFP_KERNEL);
>+	if (list == NULL)
>+		return -ENOMEM;
>+
>+	request.count = req32.count;
>+	request.list = list;
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_MAP_BUFS, (unsigned long) &request);
>+	set_fs(oldfs);
>+	if (err)
>+		goto out;
>+
>+	if (req32.count >= request.count) {
>+		list32 = (void __user *)(unsigned long)req32.list;
>+		for (i = 0; i < request.count; ++i) {
>+			err = -EFAULT;
>+			if (put_user(list[i].idx, &list32[i].idx) ||
>+			    put_user(list[i].total, &list32[i].total) ||
>+			    put_user(list[i].used, &list32[i].used) ||
>+			    put_user((unsigned long)list[i].address,
>+				     &list32[i].address))
>+				goto out;
>+		}
>+	}
>+	req32.count = request.count;
>+	req32.virtual = (unsigned long) request.virtual;
>+
>+	err = -EFAULT;
>+	if (copy_to_user(argp, &req32, sizeof(req32)))
>+		goto out;
>+	err = 0;
>+
>+ out:
>+	kfree(list);
>+	return err;
>+}
>+
>+typedef struct drm_buf_free32 {
>+	int	count;
>+	u32	list;
>+} drm_buf_free32_t;
>+
>+static int compat_drm_freebufs(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_buf_free32_t req32;
>+	drm_buf_free_t request;
>+	drm_buf_free32_t __user *argp = (void __user *)arg;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+
>+	request.count = req32.count;
>+	request.list = (int __user *)(unsigned long) req32.list;
>+	if (!access_ok(VERIFY_WRITE, request.list, request.count))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_FREE_BUFS, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_ctx_priv_map32 {
>+	unsigned int	ctx_id;  /**< Context requesting private mapping */
>+	u32		handle; /**< Handle of map */
>+} drm_ctx_priv_map32_t;
>+
>+static int compat_drm_setsareactx(unsigned int fd, unsigned int cmd, 
>+				  unsigned long arg, struct file *file)
>+{
>+	drm_file_t *priv = file->private_data;
>+	drm_device_t *dev = priv->dev;
>+	drm_ctx_priv_map32_t req32;
>+	drm_ctx_priv_map_t request;
>+	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.ctx_id = req32.ctx_id;
>+	map_handle32(dev, req32.handle, &request.handle);
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_SET_SAREA_CTX, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+static int compat_drm_getsareactx(unsigned int fd, unsigned int cmd, 
>+				  unsigned long arg, struct file *file)
>+{
>+	drm_file_t *priv = file->private_data;
>+	drm_device_t *dev = priv->dev;
>+	drm_ctx_priv_map32_t req32;
>+	drm_ctx_priv_map_t request;
>+	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.ctx_id = req32.ctx_id;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_GET_SAREA_CTX, (unsigned long) &request);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	map_handle_to32(dev, request.handle, &req32.handle);
>+
>+	if (copy_to_user(argp, &req32, sizeof(req32)))
>+		return -EFAULT;
>+
>+	return 0;
>+}
>+
>+typedef struct drm_ctx_res32 {
>+	int	count;
>+	u32	contexts;
>+} drm_ctx_res32_t;
>+
>+static int compat_drm_resctx(unsigned int fd, unsigned int cmd, 
>+			     unsigned long arg, struct file *file)
>+{
>+	drm_ctx_res32_t res32;
>+	drm_ctx_res_t res;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&res32, (void __user *)arg, sizeof(res32)))
>+		return -EFAULT;
>+
>+	res.count = res32.count;
>+	res.contexts = (drm_ctx_t __user *)(unsigned long) res32.contexts;
>+	if (!access_ok(VERIFY_WRITE, res.contexts,
>+		       res.count * sizeof(drm_ctx_t)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RES_CTX, (unsigned long) &res);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	res32.count = res.count;
>+	if (copy_to_user((void __user *)arg, &res32, sizeof(res32)))
>+		return -EFAULT;
>+
>+	return 0;
>+}
>+
>+typedef struct drm_dma32 {
>+	int	context;	  /**< Context handle */
>+	int	send_count;	  /**< Number of buffers to send */
>+	u32	send_indices;	  /**< List of handles to buffers */
>+	u32	send_sizes;	  /**< Lengths of data to send */
>+	drm_dma_flags_t flags;		  /**< Flags */
>+	int	request_count;	  /**< Number of buffers requested */
>+	int	request_size;	  /**< Desired size for buffers */
>+	u32	request_indices;  /**< Buffer information */
>+	u32	request_sizes;
>+	int	granted_count;	  /**< Number of buffers granted */
>+} drm_dma32_t;
>+
>+static int compat_drm_dma(unsigned int fd, unsigned int cmd, 
>+			  unsigned long arg, struct file *file)
>+{
>+	drm_dma32_t d32;
>+	drm_dma32_t __user *argp = (void __user *) arg;
>+	drm_dma_t d;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&d32, argp, sizeof(d32)))
>+		return -EFAULT;
>+
>+	d.context = d32.context;
>+	d.send_count = d32.send_count;
>+	d.send_indices = (int __user *)(unsigned long) d32.send_indices;
>+	d.send_sizes = (int __user *)(unsigned long) d32.send_sizes;
>+	d.flags = d32.flags;
>+	d.request_count = d32.request_count;
>+	d.request_size = d32.request_size;
>+	d.request_indices = (int __user *)(unsigned long) d32.request_indices;
>+	d.request_sizes = (int __user *)(unsigned long) d32.request_sizes;
>+
>+	if (d.send_count) {
>+		size_t nb = d.send_count * sizeof(int);
>+		if (!access_ok(VERIFY_READ, d.send_indices, nb)
>+		    || !access_ok(VERIFY_READ, d.send_sizes, nb))
>+			return -EFAULT;
>+	}
>+	if (d.request_count) {
>+		size_t nb = d.request_count * sizeof(int);
>+		if (!access_ok(VERIFY_WRITE, d.request_indices, nb)
>+		    || !access_ok(VERIFY_WRITE, d.request_sizes, nb))
>+			return -EFAULT;
>+	}
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_DMA, (unsigned long) &d);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	d32.request_size = d.request_size;
>+	d32.granted_count = d.granted_count;
>+
>+	if (copy_to_user(argp, &d32, sizeof(d32)))
>+		return -EFAULT;
>+	return 0;
>+}
>+
>+typedef struct drm_agp_mode32 {
>+	u32 mode;	/**< AGP mode */
>+} drm_agp_mode32_t;
>+
>+static int compat_drm_agp_enable(unsigned int fd, unsigned int cmd, 
>+				 unsigned long arg, struct file *file)
>+{
>+	drm_agp_mode32_t __user *argp = (void __user *)arg;
>+	drm_agp_mode32_t m32;
>+	drm_agp_mode_t mode;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&m32, argp, sizeof(m32)))
>+		return -EFAULT;
>+	mode.mode = m32.mode;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_AGP_ENABLE, (unsigned long) &mode);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_agp_info32 {
>+	int       agp_version_major;
>+	int       agp_version_minor;
>+	u32	  mode;
>+	u32	  aperture_base;  /* physical address */
>+	u32	  aperture_size;  /* bytes */
>+	u32	  memory_allowed; /* bytes */
>+	u32	  memory_used;
>+
>+				/* PCI information */
>+	unsigned short id_vendor;
>+	unsigned short id_device;
>+} drm_agp_info32_t;
>+
>+static int compat_drm_agp_info(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_agp_info32_t __user *argp = (void __user *)arg;
>+	drm_agp_info32_t i32;
>+	drm_agp_info_t info;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_AGP_INFO, (unsigned long) &info);
>+	set_fs(oldfs);
>+
>+	if (err)
>+		return err;
>+
>+	i32.agp_version_major = info.agp_version_major;
>+	i32.agp_version_minor = info.agp_version_minor;
>+	i32.mode = info.mode;
>+	i32.aperture_base = info.aperture_base;
>+	i32.aperture_size = info.aperture_size;
>+	i32.memory_allowed = info.memory_allowed;
>+	i32.memory_used = info.memory_used;
>+	i32.id_vendor = info.id_vendor;
>+	i32.id_device = info.id_device;
>+
>+	if (copy_to_user(argp, &i32, sizeof(i32)))
>+		return -EFAULT;
>+
>+	return 0;
>+}
>+
>+typedef struct drm_agp_buffer32 {
>+	u32 size;	/**< In bytes -- will round to page boundary */
>+	u32 handle;	/**< Used for binding / unbinding */
>+	u32 type;	/**< Type of memory to allocate */
>+        u32 physical;	/**< Physical used by i810 */
>+} drm_agp_buffer32_t;
>+
>+static int compat_drm_agp_alloc(unsigned int fd, unsigned int cmd, 
>+				unsigned long arg, struct file *file)
>+{
>+	drm_agp_buffer32_t __user *argp = (void __user *)arg;
>+	drm_agp_buffer32_t req32;
>+	drm_agp_buffer_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.size = req32.size;
>+	request.type = req32.type;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_AGP_ALLOC, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	if (err)
>+		return err;
>+
>+	req32.handle = request.handle;
>+	req32.physical = request.physical;
>+	if (copy_to_user(argp, &req32, sizeof(req32))) {
>+		drm_ioctl(file->f_dentry->d_inode, file,
>+			  DRM_IOCTL_AGP_FREE, (unsigned long) &request);
>+		return -EFAULT;
>+	}
>+
>+	return 0;
>+}
>+
>+static int compat_drm_agp_free(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_agp_buffer32_t __user *argp = (void __user *)arg;
>+	drm_agp_buffer32_t req32;
>+	drm_agp_buffer_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.handle = req32.handle;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_AGP_FREE, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_agp_binding32 {
>+	u32 handle;	/**< From drm_agp_buffer */
>+	u32 offset;	/**< In bytes -- will round to page boundary */
>+} drm_agp_binding32_t;
>+
>+static int compat_drm_agp_bind(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_agp_binding32_t __user *argp = (void __user *)arg;
>+	drm_agp_binding32_t req32;
>+	drm_agp_binding_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.handle = req32.handle;
>+	request.offset = req32.offset;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_AGP_BIND, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+static int compat_drm_agp_unbind(unsigned int fd, unsigned int cmd, 
>+				 unsigned long arg, struct file *file)
>+{
>+	drm_agp_binding32_t __user *argp = (void __user *)arg;
>+	drm_agp_binding32_t req32;
>+	drm_agp_binding_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.handle = req32.handle;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_AGP_UNBIND, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_scatter_gather32 {
>+	u32 size;	/**< In bytes -- will round to page boundary */
>+	u32 handle;	/**< Used for mapping / unmapping */
>+} drm_scatter_gather32_t;
>+
>+static int compat_drm_sg_alloc(unsigned int fd, unsigned int cmd, 
>+			       unsigned long arg, struct file *file)
>+{
>+	drm_scatter_gather32_t __user *argp = (void __user *)arg;
>+	drm_scatter_gather32_t req32;
>+	drm_scatter_gather_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.size = req32.size;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_SG_ALLOC, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	if (err)
>+		return err;
>+
>+	req32.handle = request.handle >> PAGE_SHIFT;
>+	if (copy_to_user(argp, &req32, sizeof(req32)))
>+		return -EFAULT;
>+	return 0;
>+}
>+
>+static int compat_drm_sg_free(unsigned int fd, unsigned int cmd, 
>+			      unsigned long arg, struct file *file)
>+{
>+	drm_file_t *priv = file->private_data;
>+	drm_device_t *dev = priv->dev;
>+	drm_scatter_gather32_t __user *argp = (void __user *)arg;
>+	drm_scatter_gather32_t req32;
>+	drm_scatter_gather_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	if (!dev->sg || req32.handle != (u32)(dev->sg->handle >> PAGE_SHIFT))
>+		return -EINVAL;
>+	request.handle = dev->sg->handle;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_SG_FREE, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+struct drm_wait_vblank_request32 {
>+	drm_vblank_seq_type_t type;
>+	unsigned int sequence;
>+	u32 signal;
>+};
>+
>+struct drm_wait_vblank_reply32 {
>+	drm_vblank_seq_type_t type;
>+	unsigned int sequence;
>+	s32 tval_sec;
>+	s32 tval_usec;
>+};
>+
>+typedef union drm_wait_vblank32 {
>+	struct drm_wait_vblank_request32 request;
>+	struct drm_wait_vblank_reply32 reply;
>+} drm_wait_vblank32_t;
>+
>+static int compat_drm_wait_vblank(unsigned int fd, unsigned int cmd, 
>+				  unsigned long arg, struct file *file)
>+{
>+	drm_wait_vblank32_t __user *argp = (void __user *)arg;
>+	drm_wait_vblank32_t req32;
>+	drm_wait_vblank_t request;
>+	mm_segment_t oldfs;
>+	int err;
>+
>+	if (copy_from_user(&req32, argp, sizeof(req32)))
>+		return -EFAULT;
>+	request.request.type = req32.request.type;
>+	request.request.sequence = req32.request.sequence;
>+	request.request.signal = req32.request.signal;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_WAIT_VBLANK, (unsigned long) &request);
>+	set_fs(oldfs);
>+	if (err)
>+		return err;
>+
>+	req32.reply.type = request.reply.type;
>+	req32.reply.sequence = request.reply.sequence;
>+	req32.reply.tval_sec = request.reply.tval_sec;
>+	req32.reply.tval_usec = request.reply.tval_usec;
>+
>+	if (copy_to_user(argp, &req32, sizeof(req32)))
>+		return -EFAULT;
>+
>+	return 0;
>+}
>+
>+#define R	register_ioctl32_conversion
>+
>+int drm_register_ioc32(void)
>+{
>+	int err;
>+
>+	if ((err = R(DRM_IOCTL_VERSION32, compat_drm_version)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_UNIQUE32, compat_drm_getunique)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_MAGIC, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_IRQ_BUSID, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_MAP32, compat_drm_getmap)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_CLIENT32, compat_drm_getclient)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_STATS32, compat_drm_getstats)) != 0 ||
>+	    (err = R(DRM_IOCTL_SET_VERSION, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_SET_UNIQUE32, compat_drm_setunique)) != 0 ||
>+	    (err = R(DRM_IOCTL_AUTH_MAGIC, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_BLOCK, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_UNBLOCK, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_CONTROL, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_ADD_MAP32, compat_drm_addmap)) != 0 ||
>+	    (err = R(DRM_IOCTL_ADD_BUFS32, compat_drm_addbufs)) != 0 ||
>+	    (err = R(DRM_IOCTL_MARK_BUFS32, compat_drm_markbufs)) != 0 ||
>+	    (err = R(DRM_IOCTL_INFO_BUFS32, compat_drm_infobufs)) != 0 ||
>+	    (err = R(DRM_IOCTL_MAP_BUFS32, compat_drm_mapbufs)) != 0 ||
>+	    (err = R(DRM_IOCTL_FREE_BUFS32, compat_drm_freebufs)) != 0 ||
>+	    (err = R(DRM_IOCTL_RM_MAP32, compat_drm_rmmap)) != 0 ||
>+	    (err = R(DRM_IOCTL_SET_SAREA_CTX32, compat_drm_setsareactx)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_SAREA_CTX32, compat_drm_getsareactx)) != 0 ||
>+	    (err = R(DRM_IOCTL_ADD_CTX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RM_CTX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_MOD_CTX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_GET_CTX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_SWITCH_CTX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_NEW_CTX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RES_CTX32, compat_drm_resctx)) != 0 ||
>+	    (err = R(DRM_IOCTL_ADD_DRAW, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RM_DRAW, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_DMA32, compat_drm_dma)) != 0 ||
>+	    (err = R(DRM_IOCTL_LOCK, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_UNLOCK, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_FINISH, NULL)) != 0 ||
>+#if __OS_HAS_AGP
>+	    (err = R(DRM_IOCTL_AGP_ACQUIRE, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_RELEASE, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_ENABLE32, compat_drm_agp_enable)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_INFO32, compat_drm_agp_info)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_ALLOC32, compat_drm_agp_alloc)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_FREE32, compat_drm_agp_free)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_BIND32, compat_drm_agp_bind)) != 0 ||
>+	    (err = R(DRM_IOCTL_AGP_UNBIND32, compat_drm_agp_unbind)) != 0 ||
>+#endif
>+	    (err = R(DRM_IOCTL_SG_ALLOC32, compat_drm_sg_alloc)) != 0 ||
>+	    (err = R(DRM_IOCTL_SG_FREE32, compat_drm_sg_free)) != 0 ||
>+	    (err = R(DRM_IOCTL_WAIT_VBLANK32, compat_drm_wait_vblank)) != 0) {
>+		printk(KERN_ERR "DRM: couldn't register ioctl conversions"
>+		       " (error %d)\n", err);
>+		return err;
>+	}
>+	return 0;
>+}
>+#undef R
>+
>+#define U	unregister_ioctl32_conversion
>+
>+void drm_unregister_ioc32(void)
>+{
>+	U(DRM_IOCTL_VERSION32);
>+	U(DRM_IOCTL_GET_UNIQUE32);
>+	U(DRM_IOCTL_GET_MAGIC);
>+	U(DRM_IOCTL_IRQ_BUSID);
>+	U(DRM_IOCTL_GET_MAP32);
>+	U(DRM_IOCTL_GET_CLIENT32);
>+	U(DRM_IOCTL_GET_STATS32);
>+	U(DRM_IOCTL_SET_VERSION);
>+	U(DRM_IOCTL_SET_UNIQUE32);
>+	U(DRM_IOCTL_AUTH_MAGIC);
>+	U(DRM_IOCTL_BLOCK);
>+	U(DRM_IOCTL_UNBLOCK);
>+	U(DRM_IOCTL_CONTROL);
>+	U(DRM_IOCTL_ADD_MAP32);
>+	U(DRM_IOCTL_ADD_BUFS32);
>+	U(DRM_IOCTL_MARK_BUFS32);
>+	U(DRM_IOCTL_INFO_BUFS32);
>+	U(DRM_IOCTL_MAP_BUFS32);
>+	U(DRM_IOCTL_FREE_BUFS32);
>+	U(DRM_IOCTL_RM_MAP32);
>+	U(DRM_IOCTL_SET_SAREA_CTX32);
>+	U(DRM_IOCTL_GET_SAREA_CTX32);
>+	U(DRM_IOCTL_ADD_CTX);
>+	U(DRM_IOCTL_RM_CTX);
>+	U(DRM_IOCTL_MOD_CTX);
>+	U(DRM_IOCTL_GET_CTX);
>+	U(DRM_IOCTL_SWITCH_CTX);
>+	U(DRM_IOCTL_NEW_CTX);
>+	U(DRM_IOCTL_RES_CTX32);
>+	U(DRM_IOCTL_ADD_DRAW);
>+	U(DRM_IOCTL_RM_DRAW);
>+	U(DRM_IOCTL_DMA32);
>+	U(DRM_IOCTL_LOCK);
>+	U(DRM_IOCTL_UNLOCK);
>+	U(DRM_IOCTL_FINISH);
>+#if __OS_HAS_AGP
>+	U(DRM_IOCTL_AGP_ACQUIRE);
>+	U(DRM_IOCTL_AGP_RELEASE);
>+	U(DRM_IOCTL_AGP_ENABLE32);
>+	U(DRM_IOCTL_AGP_INFO32);
>+	U(DRM_IOCTL_AGP_ALLOC32);
>+	U(DRM_IOCTL_AGP_FREE32);
>+	U(DRM_IOCTL_AGP_BIND32);
>+	U(DRM_IOCTL_AGP_UNBIND32);
>+#endif
>+	U(DRM_IOCTL_SG_ALLOC32);
>+	U(DRM_IOCTL_SG_FREE32);
>+	U(DRM_IOCTL_WAIT_VBLANK32);
>+}
>diff -urN linux-2.5/drivers/char/drm/drm_vm.c test/drivers/char/drm/drm_vm.c
>--- linux-2.5/drivers/char/drm/drm_vm.c	2005-01-27 09:07:53.000000000 +1100
>+++ test/drivers/char/drm/drm_vm.c	2005-03-03 19:45:56.000000000 +1100
>@@ -565,6 +565,10 @@
> 		if (!map) continue;
> 		off = dev->driver->get_map_ofs(map);
> 		if (off == VM_OFFSET(vma)) break;
>+#ifdef CONFIG_COMPAT
>+		if (r_list->handle32 && r_list->handle32 == VM_OFFSET(vma))
>+			break;
>+#endif
> 	}
> 
> 	if (!map || ((map->flags&_DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
>diff -urN linux-2.5/drivers/char/drm/radeon_drv.c test/drivers/char/drm/radeon_drv.c
>--- linux-2.5/drivers/char/drm/radeon_drv.c	2005-02-03 18:00:27.000000000 +1100
>+++ test/drivers/char/drm/radeon_drv.c	2005-03-03 19:45:56.000000000 +1100
>@@ -110,6 +110,9 @@
> 
> static int __init radeon_init(void)
> {
>+#ifdef CONFIG_COMPAT
>+	radeon_register_ioc32();
>+#endif
> 	driver.num_ioctls = radeon_max_ioctl;
> 	return drm_init(&driver);
> }
>@@ -117,6 +120,9 @@
> static void __exit radeon_exit(void)
> {
> 	drm_exit(&driver);
>+#ifdef CONFIG_COMPAT
>+	radeon_unregister_ioc32();
>+#endif
> }
> 
> module_init(radeon_init);
>diff -urN linux-2.5/drivers/char/drm/radeon_drv.h test/drivers/char/drm/radeon_drv.h
>--- linux-2.5/drivers/char/drm/radeon_drv.h	2005-02-10 09:06:38.000000000 +1100
>+++ test/drivers/char/drm/radeon_drv.h	2005-03-03 19:45:56.000000000 +1100
>@@ -335,6 +335,9 @@
> extern int radeon_postinit( struct drm_device *dev, unsigned long flags );
> extern int radeon_postcleanup( struct drm_device *dev );
> 
>+extern int radeon_register_ioc32(void);
>+extern void radeon_unregister_ioc32(void);
>+
> /* Flags for stats.boxes
>  */
> #define RADEON_BOX_DMA_IDLE      0x1
>diff -urN linux-2.5/drivers/char/drm/radeon_ioc32.c test/drivers/char/drm/radeon_ioc32.c
>--- /dev/null	2005-02-22 20:41:05.000000000 +1100
>+++ test/drivers/char/drm/radeon_ioc32.c	2005-03-03 19:50:44.000000000 +1100
>@@ -0,0 +1,481 @@
>+/**
>+ * \file radeon_ioc32.c
>+ *
>+ * 32-bit ioctl compatibility routines for the Radeon DRM.
>+ *
>+ * \author Paul Mackerras <paulus@samba.org>
>+ *
>+ * Copyright (C) Paul Mackerras 2005
>+ * 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
>+ * THE AUTHOR 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.
>+ */
>+#include <linux/compat.h>
>+#include <linux/ioctl32.h>
>+
>+#include "drmP.h"
>+#include "drm.h"
>+#include "radeon_drm.h"
>+#include "radeon_drv.h"
>+
>+#define DRM_IOCTL_RADEON_CP_INIT32  \
>+	DRM_IOW(DRM_COMMAND_BASE + DRM_RADEON_CP_INIT, drm_radeon_init32_t)
>+#define DRM_IOCTL_RADEON_CLEAR32    \
>+	DRM_IOW(DRM_COMMAND_BASE + DRM_RADEON_CLEAR, drm_radeon_clear32_t)
>+#define DRM_IOCTL_RADEON_STIPPLE32  \
>+	DRM_IOW(DRM_COMMAND_BASE + DRM_RADEON_STIPPLE, drm_radeon_stipple32_t)
>+#define DRM_IOCTL_RADEON_TEXTURE32  \
>+	DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_TEXTURE, drm_radeon_texture32_t)
>+#define DRM_IOCTL_RADEON_VERTEX2_32 \
>+	DRM_IOW(DRM_COMMAND_BASE + DRM_RADEON_VERTEX2, drm_radeon_vertex2_32_t)
>+#define DRM_IOCTL_RADEON_CMDBUF32   \
>+	DRM_IOW(DRM_COMMAND_BASE + DRM_RADEON_CMDBUF, drm_radeon_cmd_buffer32_t)
>+#define DRM_IOCTL_RADEON_GETPARAM32 \
>+	DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GETPARAM, drm_radeon_getparam32_t)
>+#define DRM_IOCTL_RADEON_ALLOC32    \
>+	DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_ALLOC, drm_radeon_mem_alloc32_t)
>+#define DRM_IOCTL_RADEON_IRQ_EMIT32 \
>+	DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_IRQ_EMIT, drm_radeon_irq_emit32_t)
>+
>+typedef struct drm_radeon_init32 {
>+	int func;
>+	u32 sarea_priv_offset;
>+	int is_pci;
>+	int cp_mode;
>+	int gart_size;
>+	int ring_size;
>+	int usec_timeout;
>+
>+	unsigned int fb_bpp;
>+	unsigned int front_offset, front_pitch;
>+	unsigned int back_offset, back_pitch;
>+	unsigned int depth_bpp;
>+	unsigned int depth_offset, depth_pitch;
>+
>+	u32 fb_offset;
>+	u32 mmio_offset;
>+	u32 ring_offset;
>+	u32 ring_rptr_offset;
>+	u32 buffers_offset;
>+	u32 gart_textures_offset;
>+} drm_radeon_init32_t;
>+
>+static int compat_radeon_cp_init(unsigned int fd, unsigned int cmd, 
>+				 unsigned long arg, struct file *file)
>+{
>+	drm_radeon_init32_t init32;
>+	drm_radeon_init_t init;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
>+		return -EFAULT;
>+	init.func = init32.func;
>+	init.sarea_priv_offset = init32.sarea_priv_offset;
>+	init.is_pci = init32.is_pci;
>+	init.cp_mode = init32.cp_mode;
>+	init.gart_size = init32.gart_size;
>+	init.ring_size = init32.ring_size;
>+	init.usec_timeout = init32.usec_timeout;
>+	init.fb_bpp = init32.fb_bpp;
>+	init.front_offset = init32.front_offset;
>+	init.front_pitch = init32.front_pitch;
>+	init.back_offset = init32.back_offset;
>+	init.back_pitch = init32.back_pitch;
>+	init.depth_bpp = init32.depth_bpp;
>+	init.depth_offset = init32.depth_offset;
>+	init.depth_pitch = init32.depth_pitch;
>+	init.fb_offset = init32.fb_offset;
>+	init.mmio_offset = init32.mmio_offset;
>+	init.ring_offset = init32.ring_offset;
>+	init.ring_rptr_offset = init32.ring_rptr_offset;
>+	init.buffers_offset = init32.buffers_offset;
>+	init.gart_textures_offset = init32.gart_textures_offset;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_CP_INIT, (unsigned long) &init);
>+	set_fs(oldfs);
>+
>+	return err;
>+}
>+
>+typedef struct drm_radeon_clear32 {
>+	unsigned int flags;
>+	unsigned int clear_color;
>+	unsigned int clear_depth;
>+	unsigned int color_mask;
>+	unsigned int depth_mask;   /* misnamed field:  should be stencil */
>+	u32	     depth_boxes;
>+} drm_radeon_clear32_t;
>+
>+static int compat_radeon_cp_clear(unsigned int fd, unsigned int cmd, 
>+				  unsigned long arg, struct file *file)
>+{
>+	drm_radeon_clear32_t clr32;
>+	drm_radeon_clear_t clr;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&clr32, (void __user *)arg, sizeof(clr32)))
>+		return -EFAULT;
>+	clr.flags = clr32.flags;
>+	clr.clear_color = clr32.clear_color;
>+	clr.clear_depth = clr32.clear_depth;
>+	clr.color_mask = clr32.color_mask;
>+	clr.depth_mask = clr32.depth_mask;
>+	clr.depth_boxes = (void __user *)(unsigned long)clr32.depth_boxes;
>+	if (!access_ok(VERIFY_READ, clr.depth_boxes,
>+		    RADEON_NR_SAREA_CLIPRECTS * sizeof(drm_radeon_clear_rect_t)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_CLEAR, (unsigned long) &clr);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_stipple32 {
>+	unsigned int __user *mask;
>+} drm_radeon_stipple32_t;
>+
>+static int compat_radeon_cp_stipple(unsigned int fd, unsigned int cmd, 
>+				    unsigned long arg, struct file *file)
>+{
>+	drm_radeon_stipple32_t req32;
>+	drm_radeon_stipple_t request;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	request.mask = (unsigned int __user *)(unsigned long) req32.mask;
>+	if (!access_ok(VERIFY_READ, request.mask, 32 * sizeof(u32)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_STIPPLE, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_tex_image32 {
>+	unsigned int x, y;		/* Blit coordinates */
>+	unsigned int width, height;
>+	u32 data;
>+} drm_radeon_tex_image32_t;
>+
>+typedef struct drm_radeon_texture32 {
>+	unsigned int offset;
>+	int pitch;
>+	int format;
>+	int width;			/* Texture image coordinates */
>+	int height;
>+	u32 image;
>+} drm_radeon_texture32_t;
>+
>+static int compat_radeon_cp_texture(unsigned int fd, unsigned int cmd, 
>+				    unsigned long arg, struct file *file)
>+{
>+	drm_radeon_texture32_t req32;
>+	drm_radeon_texture_t request;
>+	drm_radeon_tex_image32_t img32;
>+	drm_radeon_tex_image_t image;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	if (req32.image == 0)
>+		return -EINVAL;
>+	if (copy_from_user(&img32, (void __user *)(unsigned long)req32.image,
>+			   sizeof(img32)))
>+		return -EFAULT;
>+
>+	request.offset = req32.offset;
>+	request.pitch = req32.pitch;
>+	request.format = req32.format;
>+	request.width = req32.width;
>+	request.height = req32.height;
>+	request.image = &image;
>+
>+	image.x = img32.x;
>+	image.y = img32.y;
>+	image.width = img32.width;
>+	image.height = img32.height;
>+	image.data = (const void __user *)(unsigned long)img32.data;
>+	/* XXX check this */
>+	if (!access_ok(VERIFY_READ, image.data, 4 * image.width * image.height))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_TEXTURE, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_vertex2_32 {
>+	int idx;			/* Index of vertex buffer */
>+	int discard;			/* Client finished with buffer? */
>+	int nr_states;
>+	u32 state;
>+	int nr_prims;
>+	u32 prim;
>+} drm_radeon_vertex2_32_t;
>+
>+static int compat_radeon_cp_vertex2(unsigned int fd, unsigned int cmd, 
>+				    unsigned long arg, struct file *file)
>+{
>+	drm_radeon_vertex2_32_t req32;
>+	drm_radeon_vertex2_t request;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	request.idx = req32.idx;
>+	request.discard = req32.discard;
>+	request.nr_states = req32.nr_states;
>+	request.state = (void __user *)(unsigned long)req32.state;
>+	request.nr_prims = req32.nr_prims;
>+	request.prim = (void __user *)(unsigned long)req32.prim;
>+	if (!access_ok(VERIFY_READ, request.state,
>+		       request.nr_states * sizeof(drm_radeon_state_t))
>+	    || !access_ok(VERIFY_READ, request.prim,
>+			  request.nr_prims * sizeof(drm_radeon_prim_t)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_VERTEX2, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_cmd_buffer32 {
>+	int bufsz;
>+	u32 buf;
>+	int nbox;
>+	u32 boxes;
>+} drm_radeon_cmd_buffer32_t;
>+
>+static int compat_radeon_cp_cmdbuf(unsigned int fd, unsigned int cmd, 
>+				   unsigned long arg, struct file *file)
>+{
>+	drm_radeon_cmd_buffer32_t req32;
>+	drm_radeon_cmd_buffer_t request;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	request.bufsz = req32.bufsz;
>+	request.buf = (void __user *)(unsigned long)req32.buf;
>+	request.nbox = req32.nbox;
>+	request.boxes = (void __user *)(unsigned long)req32.boxes;
>+	if (!access_ok(VERIFY_READ, request.buf, request.bufsz)
>+	    || !access_ok(VERIFY_READ, request.boxes,
>+			  request.nbox * sizeof(drm_clip_rect_t)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_CMDBUF, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_getparam32 {
>+	int param;
>+	u32 value;
>+} drm_radeon_getparam32_t;
>+
>+static int compat_radeon_cp_getparam(unsigned int fd, unsigned int cmd, 
>+				     unsigned long arg, struct file *file)
>+{
>+	drm_radeon_getparam32_t req32;
>+	drm_radeon_getparam_t request;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	request.param = req32.param;
>+	request.value = (void __user *)(unsigned long)req32.value;
>+	if (!access_ok(VERIFY_WRITE, request.value, sizeof(int)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_GETPARAM, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_mem_alloc32 {
>+	int region;
>+	int alignment;
>+	int size;
>+	u32 region_offset;	/* offset from start of fb or GART */
>+} drm_radeon_mem_alloc32_t;
>+
>+static int compat_radeon_mem_alloc(unsigned int fd, unsigned int cmd, 
>+				   unsigned long arg, struct file *file)
>+{
>+	drm_radeon_mem_alloc32_t req32;
>+	drm_radeon_mem_alloc_t request;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	request.region = req32.region;
>+	request.alignment = req32.alignment;
>+	request.size = req32.size;
>+	request.region_offset = (int __user *)(unsigned long)req32.region_offset;
>+	if (!access_ok(VERIFY_WRITE, request.region_offset, sizeof(int)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_ALLOC, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+typedef struct drm_radeon_irq_emit32 {
>+	u32 irq_seq;
>+} drm_radeon_irq_emit32_t;
>+
>+static int compat_radeon_irq_emit(unsigned int fd, unsigned int cmd, 
>+				  unsigned long arg, struct file *file)
>+{
>+	drm_radeon_irq_emit32_t req32;
>+	drm_radeon_irq_emit_t request;
>+	int err;
>+	mm_segment_t oldfs;
>+
>+	if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
>+		return -EFAULT;
>+	request.irq_seq = (int __user *)(unsigned long)req32.irq_seq;
>+	if (!access_ok(VERIFY_WRITE, request.irq_seq, sizeof(int)))
>+		return -EFAULT;
>+
>+	oldfs = get_fs();
>+	set_fs(KERNEL_DS);
>+	err = drm_ioctl(file->f_dentry->d_inode, file,
>+			DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long) &request);
>+	set_fs(oldfs);
>+
>+	return err;	
>+}
>+
>+#define R	register_ioctl32_conversion
>+
>+int radeon_register_ioc32(void)
>+{
>+	int err;
>+
>+	if ((err = R(DRM_IOCTL_RADEON_CP_INIT32, compat_radeon_cp_init)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CP_START, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CP_STOP, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CP_RESET, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CP_IDLE, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_RESET, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_FULLSCREEN, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_SWAP, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CLEAR32, compat_radeon_cp_clear)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_VERTEX, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_INDICES, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_STIPPLE32, compat_radeon_cp_stipple)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_INDIRECT, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_TEXTURE32, compat_radeon_cp_texture)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_VERTEX2_32, compat_radeon_cp_vertex2)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CMDBUF32, compat_radeon_cp_cmdbuf)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_GETPARAM32, compat_radeon_cp_getparam)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_FLIP, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_ALLOC32, compat_radeon_mem_alloc)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_FREE, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_INIT_HEAP, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_IRQ_EMIT32, compat_radeon_irq_emit)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_IRQ_WAIT, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_CP_RESUME, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_SETPARAM, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_SURF_ALLOC, NULL)) != 0 ||
>+	    (err = R(DRM_IOCTL_RADEON_SURF_FREE, NULL)) != 0) {
>+		printk(KERN_ERR "radeon DRM: couldn't register ioctl conversions"
>+		       " (error %d)\n", err);
>+		return err;
>+	}
>+	return 0;
>+}
>+#undef R
>+
>+#define U	unregister_ioctl32_conversion
>+
>+void radeon_unregister_ioc32(void)
>+{
>+	U(DRM_IOCTL_RADEON_CP_INIT32);
>+	U(DRM_IOCTL_RADEON_CP_START);
>+	U(DRM_IOCTL_RADEON_CP_STOP);
>+	U(DRM_IOCTL_RADEON_CP_RESET);
>+	U(DRM_IOCTL_RADEON_CP_IDLE);
>+	U(DRM_IOCTL_RADEON_RESET);
>+	U(DRM_IOCTL_RADEON_FULLSCREEN);
>+	U(DRM_IOCTL_RADEON_SWAP);
>+	U(DRM_IOCTL_RADEON_CLEAR32);
>+	U(DRM_IOCTL_RADEON_VERTEX);
>+	U(DRM_IOCTL_RADEON_INDICES);
>+	U(DRM_IOCTL_RADEON_STIPPLE32);
>+	U(DRM_IOCTL_RADEON_INDIRECT);
>+	U(DRM_IOCTL_RADEON_TEXTURE32);
>+	U(DRM_IOCTL_RADEON_VERTEX2_32);
>+	U(DRM_IOCTL_RADEON_CMDBUF32);
>+	U(DRM_IOCTL_RADEON_GETPARAM32);
>+	U(DRM_IOCTL_RADEON_FLIP);
>+	U(DRM_IOCTL_RADEON_ALLOC32);
>+	U(DRM_IOCTL_RADEON_FREE);
>+	U(DRM_IOCTL_RADEON_INIT_HEAP);
>+	U(DRM_IOCTL_RADEON_IRQ_EMIT32);
>+	U(DRM_IOCTL_RADEON_IRQ_WAIT);
>+	U(DRM_IOCTL_RADEON_CP_RESUME);
>+	U(DRM_IOCTL_RADEON_SETPARAM);
>+	U(DRM_IOCTL_RADEON_SURF_ALLOC);
>+	U(DRM_IOCTL_RADEON_SURF_FREE);
>+}
>+

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Attachments on bug 943: 540 | 541 | 2011 | 2024 | 2025 | 2362 | 2363 | 2364 | 2418 | 2689 | 2691

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