index : renesas/drm.git	android live master
	libdrm, cloned from git://anongit.freedesktop.org/mesa/drm	Laurent Pinchart

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log msg author committer range

path: root/bsd-core

Age	Commit message (Collapse)	Author
2003-04-24	Remove more gamma DMA infrastructure. Most of this code was copied straight	Eric Anholt
	from linux, so it could be added back if some driver needed it in the future.
2003-04-24	Remove more gamma DMA code. This isn't all of it, but it's a major portion.	Eric Anholt
2003-04-24	Move some common code from addbufs_<type> to addbufs. Make buf_alloc be	Eric Anholt
	protected by the count_lock and make it non-atomic.
2003-04-24	Remove the ioctl_count variable from the device. A reference is held to the	Eric Anholt
	fp throughout the ioctl syscall, so the device can't be closed out from under us.
2003-04-24	Remove a bunch of dead code and fix spelling of a couple of comments.	Eric Anholt
2003-04-24	Move one definition to drm_drv.h and remove the rest of drm_init.h which	Eric Anholt
	was all unused.
2003-04-24	Remove DRM_DMA_HISTOGRAM and associated code.	Eric Anholt
2003-04-24	Make DRM(read) and DRM(poll) stubs and remove DRM(write) and	Eric Anholt
	DRM(write_string). This is the first part of removing much of the support code for gamma from the BSD DRM, since it appears that no new drivers are using it and nobody has ever shown interest in gamma on BSD.
2003-04-01	Whitespace and remove a dead commented line.	Eric Anholt
2003-03-29	Remove dead vma code and remove the unused devstate struct definition.	Eric Anholt
2003-03-29	Add DRMFILE definitions and supply filp for BSD in the	Eric Anholt
	post-drm-filp-0-1-branch world. The filp is a void * cast from the current pid. This is a temporary solution which maintains the status quo until a proper solution is implemented. What is really needed is a unique pointer per open, hopefully with a device private area. This can be done in FreeBSD for all entry points except mmap, but is difficult (sys/dev/streams/streams.c is an example). I have partially completed code for this but have not had time to debug, so this is a temporary fix.
2003-03-25	XFree86 4.3.0 merge	Alan Hourihane
2003-03-11	Merge back from FreeBSD-current, adding FreeBSD ID tags to aid future	Eric Anholt
	merging. Also includes an update to radeon PCI IDs.
2003-03-08	Make dma_addr_t an unsigned long not a uint32, don't try to use memrange	Eric Anholt
	functions on FreeBSD non-x86, and remove a dead define.
2003-03-06	Remove the vbl signal code because it's untested (and has lock issues on	Eric Anholt
	-current).
2003-03-05	Put cdevsw initialization in line with FreeBSD-current. (From r1.10,r1.11	Eric Anholt
	of FreeBSD CVS)
2003-03-05	Update mmap handling for FreeBSD-current (Based on r1.3 of FreeBSD CVS).	Eric Anholt
2003-03-05	Remove a paste-o in DRM_SPINUNINIT and add a volatile to the compatibility	Eric Anholt
	atomic_cmpset_int.
2003-03-04	DRM_FREE/2 patch from Philip Brown	Keith Whitwell
2003-02-22	Fix build on NetBSD.	Eric Anholt
2003-02-21	Merge from bsd-4-0-0-branch.	Eric Anholt
2003-02-02	don't inflate relative vblank sequence numbers on repeated calls (e.g. when	Michel Daenzer
	interrupted by a signal)
2003-01-24	Fix build on -current: Provide M_WAITOK define.	Eric Anholt
2002-12-06	Add vblank signal code for BSD DRM. Untested so far, but working with a	Eric Anholt
	4.2.0 userland at least.
2002-10-30	Kernel support for vblank syncing on Rage 128 and Matrox.	Eric Anholt
2002-10-29	Use bus_alloc_resource/bus_release_resource more properly: save the rid	Eric Anholt
	returned by alloc.
2002-10-27	Catch up to -current.	Eric Anholt
2002-10-14	Fix reversed test that broke vblank waiting on FreeBSD.	Eric Anholt
	Pointy hat to: anholt
2002-09-29	Remove some noise being spit to the console.	Eric Anholt
2002-09-29	Make our set_bit and friends match linux better (cleans up some warnings)	Eric Anholt
2002-09-29	warnings cleanup	Eric Anholt
2002-09-29	Fix some of my silliness in DRM_WAIT_ON (not returning EINTR).	Eric Anholt
2002-09-29	Move os-dependent stuff out of radeon_irq.c	Keith Whitwell
2002-09-29	Fix up BSD irq handling.	Eric Anholt
2002-09-26	BSD vblank framework.	Eric Anholt
2002-09-26	Fix one warning.	Eric Anholt
2002-09-23	merged r200-0-2-branch to trunk	Keith Whitwell
2002-08-30	Remove some extra symlinking for kernel module building that hasn't been	Eric Anholt
	needed since 2000.
2002-08-27	Include non-radeon modules in the build.	Eric Anholt
2002-08-26	merged r200-0-1-branch	Keith Whitwell
2002-08-21	Remove drm_linux.h, move the two useful defines into drm_drv.h (the only	Eric Anholt
	place they're used). Use fd locking on -current. Actually copy in data from userspace to kernel in the linux-compat ioctl path. Make sure ioctl sizes are as expected in the ioctl handler functions.
2002-07-05	merged bsd-3-0-0-branch	Alan Hourihane
2002-03-11	fixups for *BSD	Alan Hourihane
2002-03-06	first pass at merging mesa 4.0 kernel drivers into new bsd-3-0-0 branch.	Alan Hourihane
2002-01-27	First pass merge of XFree86 4.2.0 import.	David Dawes
2002-01-27	Import of XFree86 4.2.0	David Dawes
2002-01-27	Initial revision	David Dawes
2001-04-09	First pass of XFree86 4.0.99.2 merge.	David Dawes
2001-04-09	Import -f XFree86 4.0.99.2	David Dawes
2000-07-10	Import of XFree86 4.0.1	Alan Hourihane

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generated by cgit v1.2.3 (git 2.25.1) at 2025-11-22 01:00:29 +0000

/**
 * \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(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_version32_t v32;
	drm_version_t __user *version;
	int err;

	if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
		return -EFAULT;

	version = compat_alloc_user_space(sizeof(*version));
	if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
		return -EFAULT;
	if (__put_user(v32.name_len, &version->name_len)
	    || __put_user((void __user *)(unsigned long)v32.name,
			  &version->name)
	    || __put_user(v32.date_len, &version->date_len)
	    || __put_user((void __user *)(unsigned long)v32.date,
			  &version->date)
	    || __put_user(v32.desc_len, &version->desc_len)
	    || __put_user((void __user *)(unsigned long)v32.desc,
			  &version->desc))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_VERSION, (unsigned long)version);
	if (err)
		return err;

	if (__get_user(v32.version_major, &version->version_major)
	    || __get_user(v32.version_minor, &version->version_minor)
	    || __get_user(v32.version_patchlevel, &version->version_patchlevel)
	    || __get_user(v32.name_len, &version->name_len)
	    || __get_user(v32.date_len, &version->date_len)
	    || __get_user(v32.desc_len, &version->desc_len))
		return -EFAULT;

	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(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_unique32_t uq32;
	drm_unique_t __user *u;
	int err;

	if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
		return -EFAULT;

	u = compat_alloc_user_space(sizeof(*u));
	if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
		return -EFAULT;
	if (__put_user(uq32.unique_len, &u->unique_len)
	    || __put_user((void __user *)(unsigned long)uq32.unique,
			  &u->unique))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
	if (err)
		return err;

	if (__get_user(uq32.unique_len, &u->unique_len))
		return -EFAULT;
	if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
		return -EFAULT;
	return 0;
}

static int compat_drm_setunique(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_unique32_t uq32;
	drm_unique_t __user *u;

	if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
		return -EFAULT;

	u = compat_alloc_user_space(sizeof(*u));
	if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
		return -EFAULT;
	if (__put_user(uq32.unique_len, &u->unique_len)
	    || __put_user((void __user *)(unsigned long)uq32.unique,
			  &u->unique))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
}

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(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_map32_t __user *argp = (void __user *)arg;
	drm_map32_t m32;
	drm_map_t __user *map;
	int idx, err;
	void *handle;

	if (get_user(idx, &argp->offset))
		return -EFAULT;

	map = compat_alloc_user_space(sizeof(*map));
	if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
		return -EFAULT;
	if (__put_user(idx, &map->offset))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_MAP, (unsigned long)map);
	if (err)
		return err;

	if (__get_user(m32.offset, &map->offset)
	    || __get_user(m32.size, &map->size)
	    || __get_user(m32.type, &map->type)
	    || __get_user(m32.flags, &map->flags)
	    || __get_user(handle, &map->handle)
	    || __get_user(m32.mtrr, &map->mtrr))
		return -EFAULT;

	m32.handle = (unsigned long)handle;
	if (copy_to_user(argp, &m32, sizeof(m32)))
		return -EFAULT;
	return 0;

}

static int compat_drm_addmap(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_map32_t __user *argp = (void __user *)arg;
	drm_map32_t m32;
	drm_map_t __user *map;
	int err;
	void *handle;

	if (copy_from_user(&m32, argp, sizeof(m32)))
		return -EFAULT;

	map = compat_alloc_user_space(sizeof(*map));
	if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
		return -EFAULT;
	if (__put_user(m32.offset, &map->offset)
	    || __put_user(m32.size, &map->size)
	    || __put_user(m32.type, &map->type)
	    || __put_user(m32.flags, &map->flags))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_ADD_MAP, (unsigned long)map);
	if (err)
		return err;

	if (__get_user(m32.offset, &map->offset)
	    || __get_user(m32.mtrr, &map->mtrr)
	    || __get_user(handle, &map->handle))
		return -EFAULT;

	m32.handle = (unsigned long)handle;
	if (m32.handle != (unsigned long)handle && printk_ratelimit())
		printk(KERN_ERR "compat_drm_addmap truncated handle"
		       " %p for type %d offset %x\n",
		       handle, m32.type, m32.offset);

	if (copy_to_user(argp, &m32, sizeof(m32)))
		return -EFAULT;

	return 0;
}

static int compat_drm_rmmap(struct file *file, unsigned int cmd,
			    unsigned long arg)
{
	drm_map32_t __user *argp = (void __user *)arg;
	drm_map_t __user *map;
	u32 handle;

	if (get_user(handle, &argp->handle))
		return -EFAULT;

	map = compat_alloc_user_space(sizeof(*map));
	if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
		return -EFAULT;
	if (__put_user((void *)(unsigned long)handle, &map->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_RM_MAP, (unsigned long)map);
}

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(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_client32_t c32;
	drm_client32_t __user *argp = (void __user *)arg;
	drm_client_t __user *client;
	int idx, err;

	if (get_user(idx, &argp->idx))
		return -EFAULT;

	client = compat_alloc_user_space(sizeof(*client));
	if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
		return -EFAULT;
	if (__put_user(idx, &client->idx))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_CLIENT, (unsigned long)client);
	if (err)
		return err;

	if (__get_user(c32.auth, &client->auth)
	    || __get_user(c32.pid, &client->pid)
	    || __get_user(c32.uid, &client->uid)
	    || __get_user(c32.magic, &client->magic)
	    || __get_user(c32.iocs, &client->iocs))
		return -EFAULT;

	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(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_stats32_t s32;
	drm_stats32_t __user *argp = (void __user *)arg;
	drm_stats_t __user *stats;
	int i, err;

	stats = compat_alloc_user_space(sizeof(*stats));
	if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_STATS, (unsigned long)stats);
	if (err)
		return err;

	if (__get_user(s32.count, &stats->count))
		return -EFAULT;
	for (i = 0; i < 15; ++i)
		if (__get_user(s32.data[i].value, &stats->data[i].value)
		    || __get_user(s32.data[i].type, &stats->data[i].type))
			return -EFAULT;

	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(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_buf_desc32_t __user *argp = (void __user *)arg;
	drm_buf_desc_t __user *buf;
	int err;
	unsigned long agp_start;

	buf = compat_alloc_user_space(sizeof(*buf));
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
		return -EFAULT;

	if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
	    || __get_user(agp_start, &argp->agp_start)
	    || __put_user(agp_start, &buf->agp_start))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
	if (err)
		return err;

	if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
	    || __get_user(agp_start, &buf->agp_start)
	    || __put_user(agp_start, &argp->agp_start))
		return -EFAULT;

	return 0;
}

static int compat_drm_markbufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_desc32_t b32;
	drm_buf_desc32_t __user *argp = (void __user *)arg;
	drm_buf_desc_t __user *buf;

	if (copy_from_user(&b32, argp, sizeof(b32)))
		return -EFAULT;

	buf = compat_alloc_user_space(sizeof(*buf));
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
		return -EFAULT;

	if (__put_user(b32.size, &buf->size)
	    || __put_user(b32.low_mark, &buf->low_mark)
	    || __put_user(b32.high_mark, &buf->high_mark))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
}

typedef struct drm_buf_info32 {
	int count;		/**< Entries in list */
	u32 list;
} drm_buf_info32_t;

static int compat_drm_infobufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_info32_t req32;
	drm_buf_info32_t __user *argp = (void __user *)arg;
	drm_buf_desc32_t __user *to;
	drm_buf_info_t __user *request;
	drm_buf_desc_t __user *list;
	size_t nbytes;
	int i, err;
	int count, actual;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	count = req32.count;
	to = (drm_buf_desc32_t __user *)(unsigned long)req32.list;
	if (count < 0)
		count = 0;
	if (count > 0
	    && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
		return -EFAULT;

	nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
	request = compat_alloc_user_space(nbytes);
	if (!access_ok(VERIFY_WRITE, request, nbytes))
		return -EFAULT;
	list = (drm_buf_desc_t *) (request + 1);

	if (__put_user(count, &request->count)
	    || __put_user(list, &request->list))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_INFO_BUFS, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(actual, &request->count))
		return -EFAULT;
	if (count >= actual)
		for (i = 0; i < actual; ++i)
			if (__copy_in_user(&to[i], &list[i],
					   offsetof(drm_buf_desc_t, flags)))
				return -EFAULT;

	if (__put_user(actual, &argp->count))
		return -EFAULT;

	return 0;
}

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(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_buf_map32_t __user *argp = (void __user *)arg;
	drm_buf_map32_t req32;
	drm_buf_pub32_t __user *list32;
	drm_buf_map_t __user *request;
	drm_buf_pub_t __user *list;
	int i, err;
	int count, actual;
	size_t nbytes;
	void __user *addr;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;
	count = req32.count;
	list32 = (void __user *)(unsigned long)req32.list;

	if (count < 0)
		return -EINVAL;
	nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
	request = compat_alloc_user_space(nbytes);
	if (!access_ok(VERIFY_WRITE, request, nbytes))
		return -EFAULT;
	list = (drm_buf_pub_t *) (request + 1);

	if (__put_user(count, &request->count)
	    || __put_user(list, &request->list))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_MAP_BUFS, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(actual, &request->count))
		return -EFAULT;
	if (count >= actual)
		for (i = 0; i < actual; ++i)
			if (__copy_in_user(&list32[i], &list[i],
					   offsetof(drm_buf_pub_t, address))
			    || __get_user(addr, &list[i].address)
			    || __put_user((unsigned long)addr,
					  &list32[i].address))
				return -EFAULT;

	if (__put_user(actual, &argp->count)
	    || __get_user(addr, &request->virtual)
	    || __put_user((unsigned long)addr, &argp->virtual))
		return -EFAULT;

	return 0;
}

typedef struct drm_buf_free32 {
	int count;
	u32 list;
} drm_buf_free32_t;

static int compat_drm_freebufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_free32_t req32;
	drm_buf_free_t __user *request;
	drm_buf_free32_t __user *argp = (void __user *)arg;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(req32.count, &request->count)
	    || __put_user((int __user *)(unsigned long)req32.list,
			  &request->list))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_FREE_BUFS, (unsigned long)request);
}

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(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_ctx_priv_map32_t req32;
	drm_ctx_priv_map_t __user *request;
	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(req32.ctx_id, &request->ctx_id)
	    || __put_user((void *)(unsigned long)req32.handle,
			  &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
}

static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_ctx_priv_map_t __user *request;
	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
	int err;
	unsigned int ctx_id;
	void *handle;

	if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(ctx_id, &argp->ctx_id))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(ctx_id, &request->ctx_id))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(handle, &request->handle)
	    || __put_user((unsigned long)handle, &argp->handle))
		return -EFAULT;

	return 0;
}

typedef struct drm_ctx_res32 {
	int count;
	u32 contexts;
} drm_ctx_res32_t;

static int compat_drm_resctx(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_ctx_res32_t __user *argp = (void __user *)arg;
	drm_ctx_res32_t res32;
	drm_ctx_res_t __user *res;
	int err;

	if (copy_from_user(&res32, argp, sizeof(res32)))
		return -EFAULT;

	res = compat_alloc_user_space(sizeof(*res));
	if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
		return -EFAULT;
	if (__put_user(res32.count, &res->count)
	    || __put_user((drm_ctx_t __user *)(unsigned long)res32.contexts,
			  &res->contexts))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_RES_CTX, (unsigned long)res);
	if (err)
		return err;

	if (__get_user(res32.count, &res->count)
	    || __put_user(res32.count, &argp->count))
		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(struct file *file, unsigned int cmd,
			  unsigned long arg)
{
	drm_dma32_t d32;
	drm_dma32_t __user *argp = (void __user *)arg;
	drm_dma_t __user *d;
	int err;

	if (copy_from_user(&d32, argp, sizeof(d32)))
		return -EFAULT;

	d = compat_alloc_user_space(sizeof(*d));
	if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
		return -EFAULT;

	if (__put_user(d32.context, &d->context)
	    || __put_user(d32.send_count, &d->send_count)
	    || __put_user((int __user *)(unsigned long)d32.send_indices,
			  &d->send_indices)
	    || __put_user((int __user *)(unsigned long)d32.send_sizes,
			  &d->send_sizes)
	    || __put_user(d32.flags, &d->flags)
	    || __put_user(d32.request_count, &d->request_count)
	    || __put_user((int __user *)(unsigned long)d32.request_indices,
			  &d->request_indices)
	    || __put_user((int __user *)(unsigned long)d32.request_sizes,
			  &d->request_sizes))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_DMA, (unsigned long)d);
	if (err)
		return err;

	if (__get_user(d32.request_size, &d->request_size)
	    || __get_user(d32.granted_count, &d->granted_count)
	    || __put_user(d32.request_size, &argp->request_size)
	    || __put_user(d32.granted_count, &argp->granted_count))
		return -EFAULT;

	return 0;
}

#if __OS_HAS_AGP
typedef struct drm_agp_mode32 {
	u32 mode;	/**< AGP mode */
} drm_agp_mode32_t;

static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
				 unsigned long arg)
{
	drm_agp_mode32_t __user *argp = (void __user *)arg;
	drm_agp_mode32_t m32;
	drm_agp_mode_t __user *mode;

	if (get_user(m32.mode, &argp->mode))
		return -EFAULT;

	mode = compat_alloc_user_space(sizeof(*mode));
	if (put_user(m32.mode, &mode->mode))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
}

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(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_agp_info32_t __user *argp = (void __user *)arg;
	drm_agp_info32_t i32;
	drm_agp_info_t __user *info;
	int err;

	info = compat_alloc_user_space(sizeof(*info));
	if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_AGP_INFO, (unsigned long)info);
	if (err)
		return err;

	if (__get_user(i32.agp_version_major, &info->agp_version_major)
	    || __get_user(i32.agp_version_minor, &info->agp_version_minor)
	    || __get_user(i32.mode, &info->mode)
	    || __get_user(i32.aperture_base, &info->aperture_base)
	    || __get_user(i32.aperture_size, &info->aperture_size)
	    || __get_user(i32.memory_allowed, &info->memory_allowed)
	    || __get_user(i32.memory_used, &info->memory_used)
	    || __get_user(i32.id_vendor, &info->id_vendor)
	    || __get_user(i32.id_device, &info->id_device))
		return -EFAULT;

	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(struct file *file, unsigned int cmd,
				unsigned long arg)
{
	drm_agp_buffer32_t __user *argp = (void __user *)arg;
	drm_agp_buffer32_t req32;
	drm_agp_buffer_t __user *request;
	int err;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || __put_user(req32.size, &request->size)
	    || __put_user(req32.type, &request->type))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(req32.handle, &request->handle)
	    || __get_user(req32.physical, &request->physical)
	    || 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(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_agp_buffer32_t __user *argp = (void __user *)arg;
	drm_agp_buffer_t __user *request;
	u32 handle;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || get_user(handle, &argp->handle)
	    || __put_user(handle, &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_FREE, (unsigned long)request);
}

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(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_agp_binding32_t __user *argp = (void __user *)arg;
	drm_agp_binding32_t req32;
	drm_agp_binding_t __user *request;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || __put_user(req32.handle, &request->handle)
	    || __put_user(req32.offset, &request->offset))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_BIND, (unsigned long)request);
}

static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
				 unsigned long arg)
{
	drm_agp_binding32_t __user *argp = (void __user *)arg;
	drm_agp_binding_t __user *request;
	u32 handle;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || get_user(handle, &argp->handle)
	    || __put_user(handle, &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
}
#endif				/* __OS_HAS_AGP */

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(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_scatter_gather32_t __user *argp = (void __user *)arg;
	drm_scatter_gather_t __user *request;
	int err;
	unsigned long x;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(x, &argp->size)
	    || __put_user(x, &request->size))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_SG_ALLOC, (unsigned long)request);
	if (err)
		return err;

	/* XXX not sure about the handle conversion here... */
	if (__get_user(x, &request->handle)
	    || __put_user(x >> PAGE_SHIFT, &argp->handle))
		return -EFAULT;

	return 0;
}

static int compat_drm_sg_free(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_scatter_gather32_t __user *argp = (void __user *)arg;
	drm_scatter_gather_t __user *request;
	unsigned long x;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(x, &argp->handle)
	    || __put_user(x << PAGE_SHIFT, &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SG_FREE, (unsigned long)request);
}

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(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_wait_vblank32_t __user *argp = (void __user *)arg;
	drm_wait_vblank32_t req32;
	drm_wait_vblank_t __user *request;
	int err;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
	    || __put_user(req32.request.type, &request->request.type)
	    || __put_user(req32.request.sequence, &request->request.sequence)
	    || __put_user(req32.request.signal, &request->request.signal))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(req32.reply.type, &request->reply.type)
	    || __get_user(req32.reply.sequence, &request->reply.sequence)
	    || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
	    || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
		return -EFAULT;

	if (copy_to_user(argp, &req32, sizeof(req32)))
		return -EFAULT;

	return 0;
}

drm_ioctl_compat_t *drm_compat_ioctls[] = {
	[DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
	[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
	[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
	[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
	[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
	[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
	[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
	[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
	[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
	[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
	[DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
#if __OS_HAS_AGP
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
	[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
#endif
	[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
	[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
	[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
};

/**
 * Called whenever a 32-bit process running under a 64-bit kernel
 * performs an ioctl on /dev/drm.
 *
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument.
 * \return zero on success or negative number on failure.
 */
long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
	unsigned int nr = DRM_IOCTL_NR(cmd);
	drm_ioctl_compat_t *fn;
	int ret;

	if (nr >= DRM_ARRAY_SIZE(drm_compat_ioctls))
		return -ENOTTY;

	fn = drm_compat_ioctls[nr];

	lock_kernel();		/* XXX for now */
	if (fn != NULL)
		ret = (*fn)(filp, cmd, arg);
	else
		ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
	unlock_kernel();

	return ret;
}
EXPORT_SYMBOL(drm_compat_ioctl);