1/*	$NetBSD: i915_gem_userptr.c,v 1.5 2021/12/19 12:10:34 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2018 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: i915_gem_userptr.c,v 1.5 2021/12/19 12:10:34 riastradh Exp $");
34
35#include "i915_drv.h"
36#include "../dist/drm/i915/gem/i915_gem_ioctls.h"
37
38#include <linux/nbsd-namespace.h>
39
40/*
41 * XXX this file is dumb and maybe shouldn't exist; it exists because
42 * riastradh is a lazybones
43 */
44
45int
46i915_gem_init_userptr(struct drm_i915_private *dev_priv)
47{
48	mutex_init(&dev_priv->mm_lock);
49	hash_init(dev_priv->mm_structs);
50
51	dev_priv->mm.userptr_wq =
52		alloc_workqueue("i915-userptr-acquire",
53				WQ_HIGHPRI | WQ_UNBOUND,
54				0);
55	if (!dev_priv->mm.userptr_wq)
56		return -ENOMEM;
57
58	return 0;
59}
60
61void
62i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv)
63{
64	destroy_workqueue(dev_priv->mm.userptr_wq);
65	mutex_destroy(&dev_priv->mm_lock);
66}
67
68int
69i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
70    struct drm_file *file)
71{
72	return -ENODEV;
73}
74