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6ee73861 BS |
1 | /** |
2 | * \file mga_ioc32.c | |
3 | * | |
4 | * 32-bit ioctl compatibility routines for the MGA DRM. | |
5 | * | |
6 | * \author Dave Airlie <airlied@linux.ie> with code from patches by Egbert Eich | |
7 | * | |
8 | * | |
9 | * Copyright (C) Paul Mackerras 2005 | |
10 | * Copyright (C) Egbert Eich 2003,2004 | |
11 | * Copyright (C) Dave Airlie 2005 | |
12 | * All Rights Reserved. | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a | |
15 | * copy of this software and associated documentation files (the "Software"), | |
16 | * to deal in the Software without restriction, including without limitation | |
17 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
18 | * and/or sell copies of the Software, and to permit persons to whom the | |
19 | * Software is furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice (including the next | |
22 | * paragraph) shall be included in all copies or substantial portions of the | |
23 | * Software. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
28 | * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
29 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
30 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
31 | * IN THE SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include <linux/compat.h> | |
35 | ||
760285e7 | 36 | #include <drm/drmP.h> |
6ee73861 | 37 | |
fce875d6 | 38 | #include "nouveau_ioctl.h" |
6ee73861 BS |
39 | |
40 | /** | |
41 | * Called whenever a 32-bit process running under a 64-bit kernel | |
42 | * performs an ioctl on /dev/dri/card<n>. | |
43 | * | |
44 | * \param filp file pointer. | |
45 | * \param cmd command. | |
46 | * \param arg user argument. | |
47 | * \return zero on success or negative number on failure. | |
48 | */ | |
49 | long nouveau_compat_ioctl(struct file *filp, unsigned int cmd, | |
50 | unsigned long arg) | |
51 | { | |
52 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
53 | drm_ioctl_compat_t *fn = NULL; | |
54 | int ret; | |
55 | ||
56 | if (nr < DRM_COMMAND_BASE) | |
57 | return drm_compat_ioctl(filp, cmd, arg); | |
58 | ||
59 | #if 0 | |
60 | if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(mga_compat_ioctls)) | |
61 | fn = nouveau_compat_ioctls[nr - DRM_COMMAND_BASE]; | |
62 | #endif | |
6ee73861 BS |
63 | if (fn != NULL) |
64 | ret = (*fn)(filp, cmd, arg); | |
65 | else | |
2254f637 | 66 | ret = nouveau_drm_ioctl(filp, cmd, arg); |
6ee73861 BS |
67 | |
68 | return ret; | |
69 | } |