Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 2 | * \file drm_drv.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Generic driver template |
| 4 | * |
| 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| 6 | * \author Gareth Hughes <gareth@valinux.com> |
| 7 | * |
| 8 | * To use this template, you must at least define the following (samples |
| 9 | * given for the MGA driver): |
| 10 | * |
| 11 | * \code |
| 12 | * #define DRIVER_AUTHOR "VA Linux Systems, Inc." |
| 13 | * |
| 14 | * #define DRIVER_NAME "mga" |
| 15 | * #define DRIVER_DESC "Matrox G200/G400" |
| 16 | * #define DRIVER_DATE "20001127" |
| 17 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * #define drm_x mga_##x |
| 19 | * \endcode |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com |
| 24 | * |
| 25 | * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. |
| 26 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| 27 | * All Rights Reserved. |
| 28 | * |
| 29 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 30 | * copy of this software and associated documentation files (the "Software"), |
| 31 | * to deal in the Software without restriction, including without limitation |
| 32 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 33 | * and/or sell copies of the Software, and to permit persons to whom the |
| 34 | * Software is furnished to do so, subject to the following conditions: |
| 35 | * |
| 36 | * The above copyright notice and this permission notice (including the next |
| 37 | * paragraph) shall be included in all copies or substantial portions of the |
| 38 | * Software. |
| 39 | * |
| 40 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 41 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 42 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 43 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 44 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 45 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 46 | * OTHER DEALINGS IN THE SOFTWARE. |
| 47 | */ |
| 48 | |
Ben Gamari | 955b12d | 2009-02-17 20:08:49 -0500 | [diff] [blame] | 49 | #include <linux/debugfs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 50 | #include <linux/slab.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 51 | #include <linux/export.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 52 | #include <drm/drmP.h> |
| 53 | #include <drm/drm_core.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Ben Gamari | 955b12d | 2009-02-17 20:08:49 -0500 | [diff] [blame] | 55 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 56 | static int drm_version(struct drm_device *dev, void *data, |
| 57 | struct drm_file *file_priv); |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 58 | |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 59 | #define DRM_IOCTL_DEF(ioctl, _func, _flags) \ |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 60 | [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0, .name = #ioctl} |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | /** Ioctl table */ |
Ville Syrjälä | 7d05336 | 2013-04-25 20:09:19 +0300 | [diff] [blame] | 63 | static const struct drm_ioctl_desc drm_ioctls[] = { |
David Herrmann | 3d3b78c | 2013-10-28 10:55:49 +0100 | [diff] [blame] | 64 | DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED|DRM_RENDER_ALLOW), |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 65 | DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), |
| 66 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), |
| 67 | DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), |
Ilija Hadzic | 09b4ea4 | 2011-10-28 17:43:28 -0400 | [diff] [blame] | 68 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, DRM_UNLOCKED), |
| 69 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED), |
| 70 | DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED), |
David Herrmann | 1793126 | 2013-08-25 18:29:00 +0200 | [diff] [blame] | 71 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED|DRM_RENDER_ALLOW), |
Damien Lespiau | 1c0814f | 2013-09-25 16:45:20 +0100 | [diff] [blame] | 72 | DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0), |
Jesse Barnes | 453a7d4 | 2009-08-19 15:51:55 +1000 | [diff] [blame] | 73 | DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 75 | DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 76 | DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 77 | DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Jesse Barnes | 453a7d4 | 2009-08-19 15:51:55 +1000 | [diff] [blame] | 78 | DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 80 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 81 | DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 83 | DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 84 | DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 86 | DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), |
| 87 | DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), |
| 88 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 89 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), |
| 90 | DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Daniel Vetter | 492d774 | 2013-07-10 14:11:35 +0200 | [diff] [blame] | 91 | DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 92 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), |
| 93 | DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 94 | DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 95 | DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
Daniel Vetter | 8f87919 | 2010-08-23 22:53:31 +0200 | [diff] [blame] | 97 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 98 | DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 100 | DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), |
| 101 | DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 103 | DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), |
| 104 | |
| 105 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 106 | DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 107 | DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), |
| 108 | DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), |
| 109 | DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), |
Daniel Vetter | 6eb9278 | 2013-08-08 15:41:29 +0200 | [diff] [blame] | 110 | DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma_ioctl, DRM_AUTH), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 112 | DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
| 114 | #if __OS_HAS_AGP |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 115 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 116 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 117 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 118 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), |
| 119 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 120 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 121 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 122 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | #endif |
| 124 | |
Daniel Vetter | 1d8d29c | 2013-07-10 14:11:50 +0200 | [diff] [blame] | 125 | DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 126 | DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
Ilija Hadzic | 8f4ff2b | 2011-10-31 17:46:18 -0400 | [diff] [blame] | 128 | DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 129 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 130 | DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), |
| 131 | |
Daniel Vetter | 8f87919 | 2010-08-23 22:53:31 +0200 | [diff] [blame] | 132 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 133 | |
David Herrmann | 1793126 | 2013-08-25 18:29:00 +0200 | [diff] [blame] | 134 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), |
Dave Airlie | 9a1420d | 2010-02-03 19:14:35 +1000 | [diff] [blame] | 135 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), |
| 136 | DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 137 | |
Mandeep Singh Baines | a14b1b4 | 2012-01-20 12:11:16 -0800 | [diff] [blame] | 138 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | 3248877 | 2011-11-25 15:21:02 +0000 | [diff] [blame] | 139 | |
David Herrmann | 1793126 | 2013-08-25 18:29:00 +0200 | [diff] [blame] | 140 | DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), |
| 141 | DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), |
Dave Airlie | 3248877 | 2011-11-25 15:21:02 +0000 | [diff] [blame] | 142 | |
Rob Clark | 2216c9e | 2012-09-13 03:34:08 +0000 | [diff] [blame] | 143 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Mandeep Singh Baines | a14b1b4 | 2012-01-20 12:11:16 -0800 | [diff] [blame] | 144 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | 9a1420d | 2010-02-03 19:14:35 +1000 | [diff] [blame] | 145 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Rob Clark | 2216c9e | 2012-09-13 03:34:08 +0000 | [diff] [blame] | 146 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Jesse Barnes | 8cf5c91 | 2011-11-14 14:51:27 -0800 | [diff] [blame] | 147 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | 9a1420d | 2010-02-03 19:14:35 +1000 | [diff] [blame] | 148 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Mandeep Singh Baines | a14b1b4 | 2012-01-20 12:11:16 -0800 | [diff] [blame] | 149 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), |
Dave Airlie | 9a1420d | 2010-02-03 19:14:35 +1000 | [diff] [blame] | 150 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), |
Mandeep Singh Baines | a14b1b4 | 2012-01-20 12:11:16 -0800 | [diff] [blame] | 151 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
| 152 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Ville Syrjälä | c55b6b3 | 2013-04-26 17:40:28 +0300 | [diff] [blame] | 153 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
| 154 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Rob Clark | 2216c9e | 2012-09-13 03:34:08 +0000 | [diff] [blame] | 155 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | 9a1420d | 2010-02-03 19:14:35 +1000 | [diff] [blame] | 156 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Rob Clark | 2216c9e | 2012-09-13 03:34:08 +0000 | [diff] [blame] | 157 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Mandeep Singh Baines | a14b1b4 | 2012-01-20 12:11:16 -0800 | [diff] [blame] | 158 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
David Herrmann | fb30edf5 | 2012-09-11 18:35:11 +0000 | [diff] [blame] | 159 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
| 160 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
| 161 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | 9a1420d | 2010-02-03 19:14:35 +1000 | [diff] [blame] | 162 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 163 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
David Herrmann | fb30edf5 | 2012-09-11 18:35:11 +0000 | [diff] [blame] | 164 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
| 165 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
| 166 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Rob Clark | 2216c9e | 2012-09-13 03:34:08 +0000 | [diff] [blame] | 167 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Paulo Zanoni | c543188 | 2012-05-15 18:09:02 -0300 | [diff] [blame] | 168 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Dave Airlie | 4c813d4 | 2013-06-20 11:48:52 +1000 | [diff] [blame] | 169 | DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | }; |
| 171 | |
Dave Airlie | 0515b93 | 2007-05-08 15:28:15 +1000 | [diff] [blame] | 172 | #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | /** File operations structure */ |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 175 | static const struct file_operations drm_stub_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | .owner = THIS_MODULE, |
Arnd Bergmann | 6038f37 | 2010-08-15 18:52:59 +0200 | [diff] [blame] | 177 | .open = drm_stub_open, |
| 178 | .llseek = noop_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | }; |
| 180 | |
| 181 | static int __init drm_core_init(void) |
| 182 | { |
| 183 | int ret = -ENOMEM; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 184 | |
Dave Airlie | ba4420c | 2010-03-09 10:56:52 +1000 | [diff] [blame] | 185 | drm_global_init(); |
Ilia Mirkin | b21e3af | 2013-08-07 22:34:48 -0400 | [diff] [blame] | 186 | drm_connector_ida_init(); |
Dave Airlie | 2c14f28 | 2008-04-21 16:47:32 +1000 | [diff] [blame] | 187 | idr_init(&drm_minors_idr); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) |
| 190 | goto err_p1; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | drm_class = drm_sysfs_create(THIS_MODULE, "drm"); |
| 193 | if (IS_ERR(drm_class)) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 194 | printk(KERN_ERR "DRM: Error creating drm class.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | ret = PTR_ERR(drm_class); |
| 196 | goto err_p2; |
| 197 | } |
| 198 | |
Ben Gamari | 955b12d | 2009-02-17 20:08:49 -0500 | [diff] [blame] | 199 | drm_debugfs_root = debugfs_create_dir("dri", NULL); |
| 200 | if (!drm_debugfs_root) { |
GeunSik Lim | 156f5a7 | 2009-06-02 15:01:37 +0900 | [diff] [blame] | 201 | DRM_ERROR("Cannot create /sys/kernel/debug/dri\n"); |
Ben Gamari | 955b12d | 2009-02-17 20:08:49 -0500 | [diff] [blame] | 202 | ret = -1; |
| 203 | goto err_p3; |
| 204 | } |
| 205 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 206 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
| 207 | CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | return 0; |
Jesse Barnes | e8b962b | 2007-11-22 14:02:38 +1000 | [diff] [blame] | 209 | err_p3: |
| 210 | drm_sysfs_destroy(); |
| 211 | err_p2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | unregister_chrdev(DRM_MAJOR, "drm"); |
Dave Airlie | 2c14f28 | 2008-04-21 16:47:32 +1000 | [diff] [blame] | 213 | |
| 214 | idr_destroy(&drm_minors_idr); |
Jesse Barnes | e8b962b | 2007-11-22 14:02:38 +1000 | [diff] [blame] | 215 | err_p1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | return ret; |
| 217 | } |
| 218 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 219 | static void __exit drm_core_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | { |
Ben Gamari | 955b12d | 2009-02-17 20:08:49 -0500 | [diff] [blame] | 221 | debugfs_remove(drm_debugfs_root); |
Jesse Barnes | e8b962b | 2007-11-22 14:02:38 +1000 | [diff] [blame] | 222 | drm_sysfs_destroy(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
| 224 | unregister_chrdev(DRM_MAJOR, "drm"); |
| 225 | |
Ilia Mirkin | b21e3af | 2013-08-07 22:34:48 -0400 | [diff] [blame] | 226 | drm_connector_ida_destroy(); |
Dave Airlie | 2c14f28 | 2008-04-21 16:47:32 +1000 | [diff] [blame] | 227 | idr_destroy(&drm_minors_idr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
| 229 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 230 | module_init(drm_core_init); |
| 231 | module_exit(drm_core_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
| 233 | /** |
Andres Salomon | 156822f | 2009-11-17 14:41:23 -0800 | [diff] [blame] | 234 | * Copy and IOCTL return string to user space |
| 235 | */ |
Thierry Reding | d3cf40e | 2014-07-21 13:24:37 +0200 | [diff] [blame] | 236 | static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value) |
Andres Salomon | 140a45f | 2009-11-17 14:41:24 -0800 | [diff] [blame] | 237 | { |
| 238 | int len; |
| 239 | |
| 240 | /* don't overflow userbuf */ |
| 241 | len = strlen(value); |
| 242 | if (len > *buf_len) |
| 243 | len = *buf_len; |
| 244 | |
| 245 | /* let userspace know exact length of driver value (which could be |
| 246 | * larger than the userspace-supplied buffer) */ |
| 247 | *buf_len = strlen(value); |
| 248 | |
| 249 | /* finally, try filling in the userbuf */ |
| 250 | if (len && buf) |
| 251 | if (copy_to_user(buf, value, len)) |
| 252 | return -EFAULT; |
| 253 | return 0; |
| 254 | } |
Andres Salomon | 156822f | 2009-11-17 14:41:23 -0800 | [diff] [blame] | 255 | |
| 256 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | * Get version information |
| 258 | * |
| 259 | * \param inode device inode. |
| 260 | * \param filp file pointer. |
| 261 | * \param cmd command. |
| 262 | * \param arg user argument, pointing to a drm_version structure. |
| 263 | * \return zero on success or negative number on failure. |
| 264 | * |
| 265 | * Fills in the version information in \p arg. |
| 266 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 267 | static int drm_version(struct drm_device *dev, void *data, |
| 268 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 270 | struct drm_version *version = data; |
Andres Salomon | dad07ca | 2009-11-17 14:41:25 -0800 | [diff] [blame] | 271 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 273 | version->version_major = dev->driver->major; |
| 274 | version->version_minor = dev->driver->minor; |
| 275 | version->version_patchlevel = dev->driver->patchlevel; |
Andres Salomon | dad07ca | 2009-11-17 14:41:25 -0800 | [diff] [blame] | 276 | err = drm_copy_field(version->name, &version->name_len, |
| 277 | dev->driver->name); |
| 278 | if (!err) |
| 279 | err = drm_copy_field(version->date, &version->date_len, |
| 280 | dev->driver->date); |
| 281 | if (!err) |
| 282 | err = drm_copy_field(version->desc, &version->desc_len, |
| 283 | dev->driver->desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
Andres Salomon | dad07ca | 2009-11-17 14:41:25 -0800 | [diff] [blame] | 285 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
| 287 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 288 | /** |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 289 | * drm_ioctl_permit - Check ioctl permissions against caller |
| 290 | * |
| 291 | * @flags: ioctl permission flags. |
| 292 | * @file_priv: Pointer to struct drm_file identifying the caller. |
| 293 | * |
| 294 | * Checks whether the caller is allowed to run an ioctl with the |
| 295 | * indicated permissions. If so, returns zero. Otherwise returns an |
| 296 | * error code suitable for ioctl return. |
| 297 | */ |
| 298 | static int drm_ioctl_permit(u32 flags, struct drm_file *file_priv) |
| 299 | { |
| 300 | /* ROOT_ONLY is only for CAP_SYS_ADMIN */ |
| 301 | if (unlikely((flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN))) |
| 302 | return -EACCES; |
| 303 | |
| 304 | /* AUTH is only for authenticated or render client */ |
| 305 | if (unlikely((flags & DRM_AUTH) && !drm_is_render_client(file_priv) && |
| 306 | !file_priv->authenticated)) |
| 307 | return -EACCES; |
| 308 | |
Thomas Hellstrom | ac05dbc | 2014-02-19 14:21:48 +0100 | [diff] [blame] | 309 | /* MASTER is only for master or control clients */ |
| 310 | if (unlikely((flags & DRM_MASTER) && !file_priv->is_master && |
| 311 | !drm_is_control_client(file_priv))) |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 312 | return -EACCES; |
| 313 | |
| 314 | /* Control clients must be explicitly allowed */ |
| 315 | if (unlikely(!(flags & DRM_CONTROL_ALLOW) && |
Thomas Hellstrom | ac05dbc | 2014-02-19 14:21:48 +0100 | [diff] [blame] | 316 | drm_is_control_client(file_priv))) |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 317 | return -EACCES; |
| 318 | |
| 319 | /* Render clients must be explicitly allowed */ |
| 320 | if (unlikely(!(flags & DRM_RENDER_ALLOW) && |
| 321 | drm_is_render_client(file_priv))) |
| 322 | return -EACCES; |
| 323 | |
| 324 | return 0; |
| 325 | } |
| 326 | |
| 327 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | * Called whenever a process performs an ioctl on /dev/drm. |
| 329 | * |
| 330 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 331 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | * \param cmd command. |
| 333 | * \param arg user argument. |
| 334 | * \return zero on success or negative number on failure. |
| 335 | * |
| 336 | * Looks up the ioctl function in the ::ioctls table, checking for root |
| 337 | * previleges if so required, and dispatches to the respective function. |
| 338 | */ |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 339 | long drm_ioctl(struct file *filp, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 340 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | { |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 342 | struct drm_file *file_priv = filp->private_data; |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 343 | struct drm_device *dev; |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 344 | const struct drm_ioctl_desc *ioctl = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | drm_ioctl_t *func; |
| 346 | unsigned int nr = DRM_IOCTL_NR(cmd); |
| 347 | int retcode = -EINVAL; |
Eric Anholt | 955a23e | 2009-03-19 18:56:14 -0700 | [diff] [blame] | 348 | char stack_kdata[128]; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 349 | char *kdata = NULL; |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 350 | unsigned int usize, asize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 352 | dev = file_priv->minor->dev; |
Dave Airlie | 2c07a21 | 2012-02-20 14:18:07 +0000 | [diff] [blame] | 353 | |
| 354 | if (drm_device_is_unplugged(dev)) |
| 355 | return -ENODEV; |
| 356 | |
Dave Airlie | 0515b93 | 2007-05-08 15:28:15 +1000 | [diff] [blame] | 357 | if ((nr >= DRM_CORE_IOCTL_COUNT) && |
Thomas Hellstrom | 99da6d8 | 2007-03-19 08:52:17 +1100 | [diff] [blame] | 358 | ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) |
| 359 | goto err_i1; |
Dave Airlie | 0515b93 | 2007-05-08 15:28:15 +1000 | [diff] [blame] | 360 | if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) && |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 361 | (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) { |
| 362 | u32 drv_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 364 | drv_size = _IOC_SIZE(ioctl->cmd_drv); |
| 365 | usize = asize = _IOC_SIZE(cmd); |
| 366 | if (drv_size > asize) |
| 367 | asize = drv_size; |
Chris Wilson | e4fda9f | 2013-04-12 10:39:59 +0100 | [diff] [blame] | 368 | cmd = ioctl->cmd_drv; |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 369 | } |
Dave Airlie | 858a368 | 2008-06-20 15:42:38 +1000 | [diff] [blame] | 370 | else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { |
Chris Wilson | b062672 | 2013-10-16 11:22:44 +0100 | [diff] [blame] | 371 | u32 drv_size; |
| 372 | |
Thomas Hellstrom | 99da6d8 | 2007-03-19 08:52:17 +1100 | [diff] [blame] | 373 | ioctl = &drm_ioctls[nr]; |
Chris Wilson | b062672 | 2013-10-16 11:22:44 +0100 | [diff] [blame] | 374 | |
| 375 | drv_size = _IOC_SIZE(ioctl->cmd); |
Dave Airlie | 1b2f148 | 2010-08-14 20:20:34 +1000 | [diff] [blame] | 376 | usize = asize = _IOC_SIZE(cmd); |
Chris Wilson | b062672 | 2013-10-16 11:22:44 +0100 | [diff] [blame] | 377 | if (drv_size > asize) |
| 378 | asize = drv_size; |
| 379 | |
| 380 | cmd = ioctl->cmd; |
Dave Airlie | 858a368 | 2008-06-20 15:42:38 +1000 | [diff] [blame] | 381 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | goto err_i1; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 383 | |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 384 | DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n", |
| 385 | task_pid_nr(current), |
David Herrmann | 5817878 | 2014-01-29 13:12:31 +0100 | [diff] [blame] | 386 | (long)old_encode_dev(file_priv->minor->kdev->devt), |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 387 | file_priv->authenticated, ioctl->name); |
| 388 | |
Johannes Weiner | 41ee2ff | 2008-06-13 15:04:40 +1000 | [diff] [blame] | 389 | /* Do not trust userspace, use our own definition */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | func = ioctl->func; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 391 | |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 392 | if (unlikely(!func)) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 393 | DRM_DEBUG("no function\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | retcode = -EINVAL; |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 395 | goto err_i1; |
| 396 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 397 | |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 398 | retcode = drm_ioctl_permit(ioctl->flags, file_priv); |
| 399 | if (unlikely(retcode)) |
| 400 | goto err_i1; |
| 401 | |
| 402 | if (cmd & (IOC_IN | IOC_OUT)) { |
| 403 | if (asize <= sizeof(stack_kdata)) { |
| 404 | kdata = stack_kdata; |
| 405 | } else { |
| 406 | kdata = kmalloc(asize, GFP_KERNEL); |
| 407 | if (!kdata) { |
| 408 | retcode = -ENOMEM; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 409 | goto err_i1; |
| 410 | } |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 411 | } |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 412 | if (asize > usize) |
| 413 | memset(kdata + usize, 0, asize - usize); |
| 414 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 415 | |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 416 | if (cmd & IOC_IN) { |
| 417 | if (copy_from_user(kdata, (void __user *)arg, |
| 418 | usize) != 0) { |
| 419 | retcode = -EFAULT; |
| 420 | goto err_i1; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 421 | } |
Zhaowei Yuan | 1539fb9 | 2014-06-18 14:33:59 +0800 | [diff] [blame] | 422 | } else if (cmd & IOC_OUT) { |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 423 | memset(kdata, 0, usize); |
Zhaowei Yuan | 1539fb9 | 2014-06-18 14:33:59 +0800 | [diff] [blame] | 424 | } |
Thomas Hellstrom | c266735 | 2014-03-13 10:30:25 +0100 | [diff] [blame] | 425 | |
| 426 | if (ioctl->flags & DRM_UNLOCKED) |
| 427 | retcode = func(dev, kdata, file_priv); |
| 428 | else { |
| 429 | mutex_lock(&drm_global_mutex); |
| 430 | retcode = func(dev, kdata, file_priv); |
| 431 | mutex_unlock(&drm_global_mutex); |
| 432 | } |
| 433 | |
| 434 | if (cmd & IOC_OUT) { |
| 435 | if (copy_to_user((void __user *)arg, kdata, |
| 436 | usize) != 0) |
| 437 | retcode = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 439 | |
| 440 | err_i1: |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 441 | if (!ioctl) |
Thierry Reding | f28c38a | 2013-10-09 13:33:43 +0200 | [diff] [blame] | 442 | DRM_DEBUG("invalid ioctl: pid=%d, dev=0x%lx, auth=%d, cmd=0x%02x, nr=0x%02x\n", |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 443 | task_pid_nr(current), |
David Herrmann | 5817878 | 2014-01-29 13:12:31 +0100 | [diff] [blame] | 444 | (long)old_encode_dev(file_priv->minor->kdev->devt), |
Chris Cummins | b9434d0 | 2013-05-09 14:20:40 +0100 | [diff] [blame] | 445 | file_priv->authenticated, cmd, nr); |
| 446 | |
Eric Anholt | 955a23e | 2009-03-19 18:56:14 -0700 | [diff] [blame] | 447 | if (kdata != stack_kdata) |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 448 | kfree(kdata); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 449 | if (retcode) |
Yuanhan Liu | 4ef7fe7 | 2012-06-16 22:25:24 +0800 | [diff] [blame] | 450 | DRM_DEBUG("ret = %d\n", retcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | return retcode; |
| 452 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 453 | EXPORT_SYMBOL(drm_ioctl); |
Thomas Hellstrom | 4beb6d9 | 2014-02-26 15:51:57 +0100 | [diff] [blame] | 454 | |
| 455 | /** |
| 456 | * drm_ioctl_flags - Check for core ioctl and return ioctl permission flags |
| 457 | * |
| 458 | * @nr: Ioctl number. |
| 459 | * @flags: Where to return the ioctl permission flags |
| 460 | */ |
| 461 | bool drm_ioctl_flags(unsigned int nr, unsigned int *flags) |
| 462 | { |
| 463 | if ((nr >= DRM_COMMAND_END && nr < DRM_CORE_IOCTL_COUNT) || |
| 464 | (nr < DRM_COMMAND_BASE)) { |
| 465 | *flags = drm_ioctls[nr].flags; |
| 466 | return true; |
| 467 | } |
| 468 | |
| 469 | return false; |
| 470 | } |
| 471 | EXPORT_SYMBOL(drm_ioctl_flags); |