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
45 int
i915_gem_init_userptr(struct drm_i915_private * dev_priv)46 i915_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
61 void
i915_gem_cleanup_userptr(struct drm_i915_private * dev_priv)62 i915_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
68 int
i915_gem_userptr_ioctl(struct drm_device * dev,void * data,struct drm_file * file)69 i915_gem_userptr_ioctl(struct drm_device *dev, void *data,
70 struct drm_file *file)
71 {
72 return -ENODEV;
73 }
74