| 1 | /* |
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| 2 | * \file mga_ioc32.c |
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| 3 | * |
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| 4 | * 32-bit ioctl compatibility routines for the MGA DRM. |
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| 5 | * |
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| 6 | * \author Dave Airlie <airlied@linux.ie> with code from patches by Egbert Eich |
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| 7 | * |
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| 8 | * |
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| 9 | * Copyright (C) Paul Mackerras 2005 |
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| 10 | * Copyright (C) Egbert Eich 2003,2004 |
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| 11 | * Copyright (C) Dave Airlie 2005 |
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| 12 | * All Rights Reserved. |
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| 13 | * |
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| 14 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 15 | * copy of this software and associated documentation files (the "Software"), |
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| 16 | * to deal in the Software without restriction, including without limitation |
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| 17 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 18 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 19 | * Software is furnished to do so, subject to the following conditions: |
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| 20 | * |
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| 21 | * The above copyright notice and this permission notice (including the next |
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| 22 | * paragraph) shall be included in all copies or substantial portions of the |
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| 23 | * Software. |
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| 24 | * |
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| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 28 | * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 29 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 30 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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| 31 | * IN THE SOFTWARE. |
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| 32 | */ |
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| 33 | |
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| 34 | #include <linux/compat.h> |
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| 35 | |
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| 36 | #include <drm/drm.h> |
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| 37 | #include <drm/drm_ioctl.h> |
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| 38 | |
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| 39 | #include "nouveau_ioctl.h" |
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| 40 | |
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| 41 | /* |
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| 42 | * Called whenever a 32-bit process running under a 64-bit kernel |
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| 43 | * performs an ioctl on /dev/dri/card<n>. |
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| 44 | * |
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| 45 | * \param filp file pointer. |
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| 46 | * \param cmd command. |
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| 47 | * \param arg user argument. |
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| 48 | * \return zero on success or negative number on failure. |
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| 49 | */ |
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| 50 | long nouveau_compat_ioctl(struct file *filp, unsigned int cmd, |
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| 51 | unsigned long arg) |
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| 52 | { |
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| 53 | unsigned int nr = DRM_IOCTL_NR(cmd); |
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| 54 | drm_ioctl_compat_t *fn = NULL; |
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| 55 | int ret; |
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| 56 | |
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| 57 | if (nr < DRM_COMMAND_BASE) |
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| 58 | return drm_compat_ioctl(filp, cmd, arg); |
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| 59 | |
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| 60 | #if 0 |
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| 61 | if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(mga_compat_ioctls)) |
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| 62 | fn = nouveau_compat_ioctls[nr - DRM_COMMAND_BASE]; |
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| 63 | #endif |
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| 64 | if (fn != NULL) |
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| 65 | ret = (*fn)(filp, cmd, arg); |
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| 66 | else |
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| 67 | ret = nouveau_drm_ioctl(filp, cmd, arg); |
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| 68 | |
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| 69 | return ret; |
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| 70 | } |
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| 71 | |
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