blob: 1490e764eddf9ab5d96d2ccc4a3f9502f405cb48 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/**
Dave Airlieb5e89ed2005-09-25 14:28:13 +10002 * \file drm_drv.c
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 * 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 Torvalds1da177e2005-04-16 15:20:36 -070018 * #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 Gamari955b12d2009-02-17 20:08:49 -050049#include <linux/debugfs.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090050#include <linux/slab.h>
Paul Gortmaker2d1a8a42011-08-30 18:16:33 -040051#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#include "drmP.h"
53#include "drm_core.h"
54
Ben Gamari955b12d2009-02-17 20:08:49 -050055
Eric Anholtc153f452007-09-03 12:06:45 +100056static int drm_version(struct drm_device *dev, void *data,
57 struct drm_file *file_priv);
Dave Airliec94f7022005-07-07 21:03:38 +100058
Dave Airlie1b2f1482010-08-14 20:20:34 +100059#define DRM_IOCTL_DEF(ioctl, _func, _flags) \
60 [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0}
61
Linus Torvalds1da177e2005-04-16 15:20:36 -070062/** Ioctl table */
Eric Anholtc153f452007-09-03 12:06:45 +100063static struct drm_ioctl_desc drm_ioctls[] = {
Ilija Hadzic53fead92011-10-25 22:20:12 -040064 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED),
Eric Anholtc153f452007-09-03 12:06:45 +100065 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 Hadzic09b4ea42011-10-28 17:43:28 -040068 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),
Ilija Hadzic53fead92011-10-25 22:20:12 -040071 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
Jesse Barnes453a7d42009-08-19 15:51:55 +100072 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
Eric Anholtc153f452007-09-03 12:06:45 +100074 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
75 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
76 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Jesse Barnes453a7d42009-08-19 15:51:55 +100077 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER),
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Eric Anholtc153f452007-09-03 12:06:45 +100079 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
80 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
Eric Anholtc153f452007-09-03 12:06:45 +100082 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
83 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
Dave Airlie7c1c2872008-11-28 14:22:24 +100085 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
86 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
87
Eric Anholtc153f452007-09-03 12:06:45 +100088 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
89 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
90 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
91 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
92 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
93 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
94 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
Daniel Vetter8f879192010-08-23 22:53:31 +020096 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
97 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
Eric Anholtc153f452007-09-03 12:06:45 +100099 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
100 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Eric Anholtc153f452007-09-03 12:06:45 +1000102 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
103
104 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
105 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
106 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
107 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
108 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
Eric Anholtc153f452007-09-03 12:06:45 +1000110 DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
Eric Anholtc153f452007-09-03 12:06:45 +1000112 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
114#if __OS_HAS_AGP
Eric Anholtc153f452007-09-03 12:06:45 +1000115 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 Torvalds1da177e2005-04-16 15:20:36 -0700123#endif
124
Eric Anholtc153f452007-09-03 12:06:45 +1000125 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
126 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127
Ilija Hadzic8f4ff2b2011-10-31 17:46:18 -0400128 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
=?utf-8?q?Michel_D=C3=A4nzer?=bea56792006-10-24 23:04:19 +1000129
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700130 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
131
Daniel Vetter8f879192010-08-23 22:53:31 +0200132 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Eric Anholt673a3942008-07-30 12:06:12 -0700133
Dave Airlie9a1420d2010-02-03 19:14:35 +1000134 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
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 Airlief453ba02008-11-07 14:05:41 -0800137
Mandeep Singh Bainesa14b1b42012-01-20 12:11:16 -0800138 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Dave Airlie32488772011-11-25 15:21:02 +0000139
140 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED),
141 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED),
142
Jesse Barnes8cf5c912011-11-14 14:51:27 -0800143 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Mandeep Singh Bainesa14b1b42012-01-20 12:11:16 -0800144 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Dave Airlie9a1420d2010-02-03 19:14:35 +1000145 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Jesse Barnes8cf5c912011-11-14 14:51:27 -0800146 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
147 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Dave Airlie9a1420d2010-02-03 19:14:35 +1000148 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Mandeep Singh Bainesa14b1b42012-01-20 12:11:16 -0800149 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED),
Dave Airlie9a1420d2010-02-03 19:14:35 +1000150 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
Mandeep Singh Bainesa14b1b42012-01-20 12:11:16 -0800151 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),
Dave Airlie9a1420d2010-02-03 19:14:35 +1000153 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
154 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
155 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
156 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
157 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Mandeep Singh Bainesa14b1b42012-01-20 12:11:16 -0800158 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
David Herrmannfb30edf52012-09-11 18:35:11 +0000159 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 Airlie9a1420d2010-02-03 19:14:35 +1000162 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Dave Airlieff72145b2011-02-07 12:16:14 +1000163 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
David Herrmannfb30edf52012-09-11 18:35:11 +0000164 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),
Paulo Zanonic5431882012-05-15 18:09:02 -0300167 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
168 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169};
170
Dave Airlie0515b932007-05-08 15:28:15 +1000171#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172
173/**
174 * Take down the DRM device.
175 *
176 * \param dev DRM device structure.
177 *
178 * Frees every resource in \p dev.
179 *
Dave Airlieaff138a2005-07-10 16:58:40 +1000180 * \sa drm_device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000182int drm_lastclose(struct drm_device * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183{
Dave Airlie8fc2fdf2007-07-11 16:21:47 +1000184 struct drm_vma_entry *vma, *vma_temp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000186 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
Dave Airlie22eae942005-11-10 22:16:34 +1100188 if (dev->driver->lastclose)
189 dev->driver->lastclose(dev);
190 DRM_DEBUG("driver lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
Dave Airlief453ba02008-11-07 14:05:41 -0800192 if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET))
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000193 drm_irq_uninstall(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
Dave Airlie30e2fb12006-02-02 19:37:46 +1100195 mutex_lock(&dev->struct_mutex);
Dave Airlied4e2cbe2007-07-17 10:55:47 +1000196
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000197 /* Clear AGP information */
Dave Airlief453ba02008-11-07 14:05:41 -0800198 if (drm_core_has_AGP(dev) && dev->agp &&
Ben Gamari955b12d2009-02-17 20:08:49 -0500199 !drm_core_check_feature(dev, DRIVER_MODESET)) {
Dave Airlie55910512007-07-11 16:53:40 +1000200 struct drm_agp_mem *entry, *tempe;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000202 /* Remove AGP resources, but leave dev->agp
203 intact until drv_cleanup is called. */
Dave Airliebd1b3312007-05-26 05:01:51 +1000204 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000205 if (entry->bound)
206 drm_unbind_agp(entry->memory);
207 drm_free_agp(entry->memory, entry->pages);
Eric Anholt9a298b22009-03-24 12:23:04 -0700208 kfree(entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 }
Dave Airliebd1b3312007-05-26 05:01:51 +1000210 INIT_LIST_HEAD(&dev->agp->memory);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211
Dave Airlie7ab98402005-07-10 16:56:52 +1000212 if (dev->agp->acquired)
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000213 drm_agp_release(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
215 dev->agp->acquired = 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000216 dev->agp->enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 }
Dave Airlief453ba02008-11-07 14:05:41 -0800218 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg &&
219 !drm_core_check_feature(dev, DRIVER_MODESET)) {
Dave Airlie836cf042005-07-10 19:27:04 +1000220 drm_sg_cleanup(dev->sg);
221 dev->sg = NULL;
222 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000224 /* Clear vma list (only built for debugging) */
Dave Airliebd1b3312007-05-26 05:01:51 +1000225 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
226 list_del(&vma->head);
Eric Anholt9a298b22009-03-24 12:23:04 -0700227 kfree(vma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 }
229
Dave Airlief453ba02008-11-07 14:05:41 -0800230 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
231 !drm_core_check_feature(dev, DRIVER_MODESET))
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000232 drm_dma_takedown(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Jesse Barnesa2c0a972008-11-05 10:31:53 -0800234 dev->dev_mapping = NULL;
Dave Airlie30e2fb12006-02-02 19:37:46 +1100235 mutex_unlock(&dev->struct_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Dave Airlie22eae942005-11-10 22:16:34 +1100237 DRM_DEBUG("lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 return 0;
239}
240
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241/** File operations structure */
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800242static const struct file_operations drm_stub_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 .owner = THIS_MODULE,
Arnd Bergmann6038f372010-08-15 18:52:59 +0200244 .open = drm_stub_open,
245 .llseek = noop_llseek,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246};
247
248static int __init drm_core_init(void)
249{
250 int ret = -ENOMEM;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000251
Dave Airlieba4420c2010-03-09 10:56:52 +1000252 drm_global_init();
Dave Airlie2c14f282008-04-21 16:47:32 +1000253 idr_init(&drm_minors_idr);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000254
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
256 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
259 if (IS_ERR(drm_class)) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000260 printk(KERN_ERR "DRM: Error creating drm class.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 ret = PTR_ERR(drm_class);
262 goto err_p2;
263 }
264
Al Viro66600222005-09-28 22:32:57 +0100265 drm_proc_root = proc_mkdir("dri", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 if (!drm_proc_root) {
267 DRM_ERROR("Cannot create /proc/dri\n");
268 ret = -1;
269 goto err_p3;
270 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000271
Ben Gamari955b12d2009-02-17 20:08:49 -0500272 drm_debugfs_root = debugfs_create_dir("dri", NULL);
273 if (!drm_debugfs_root) {
GeunSik Lim156f5a72009-06-02 15:01:37 +0900274 DRM_ERROR("Cannot create /sys/kernel/debug/dri\n");
Ben Gamari955b12d2009-02-17 20:08:49 -0500275 ret = -1;
276 goto err_p3;
277 }
278
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000279 DRM_INFO("Initialized %s %d.%d.%d %s\n",
280 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 return 0;
Jesse Barnese8b962b2007-11-22 14:02:38 +1000282err_p3:
283 drm_sysfs_destroy();
284err_p2:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 unregister_chrdev(DRM_MAJOR, "drm");
Dave Airlie2c14f282008-04-21 16:47:32 +1000286
287 idr_destroy(&drm_minors_idr);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000288err_p1:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 return ret;
290}
291
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000292static void __exit drm_core_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
294 remove_proc_entry("dri", NULL);
Ben Gamari955b12d2009-02-17 20:08:49 -0500295 debugfs_remove(drm_debugfs_root);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000296 drm_sysfs_destroy();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
298 unregister_chrdev(DRM_MAJOR, "drm");
299
Chris Wilsonddd3d062010-07-24 22:28:25 +0100300 idr_remove_all(&drm_minors_idr);
Dave Airlie2c14f282008-04-21 16:47:32 +1000301 idr_destroy(&drm_minors_idr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302}
303
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000304module_init(drm_core_init);
305module_exit(drm_core_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
307/**
Andres Salomon156822f2009-11-17 14:41:23 -0800308 * Copy and IOCTL return string to user space
309 */
Andres Salomon140a45f2009-11-17 14:41:24 -0800310static int drm_copy_field(char *buf, size_t *buf_len, const char *value)
311{
312 int len;
313
314 /* don't overflow userbuf */
315 len = strlen(value);
316 if (len > *buf_len)
317 len = *buf_len;
318
319 /* let userspace know exact length of driver value (which could be
320 * larger than the userspace-supplied buffer) */
321 *buf_len = strlen(value);
322
323 /* finally, try filling in the userbuf */
324 if (len && buf)
325 if (copy_to_user(buf, value, len))
326 return -EFAULT;
327 return 0;
328}
Andres Salomon156822f2009-11-17 14:41:23 -0800329
330/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 * Get version information
332 *
333 * \param inode device inode.
334 * \param filp file pointer.
335 * \param cmd command.
336 * \param arg user argument, pointing to a drm_version structure.
337 * \return zero on success or negative number on failure.
338 *
339 * Fills in the version information in \p arg.
340 */
Eric Anholtc153f452007-09-03 12:06:45 +1000341static int drm_version(struct drm_device *dev, void *data,
342 struct drm_file *file_priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343{
Eric Anholtc153f452007-09-03 12:06:45 +1000344 struct drm_version *version = data;
Andres Salomondad07ca2009-11-17 14:41:25 -0800345 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Eric Anholtc153f452007-09-03 12:06:45 +1000347 version->version_major = dev->driver->major;
348 version->version_minor = dev->driver->minor;
349 version->version_patchlevel = dev->driver->patchlevel;
Andres Salomondad07ca2009-11-17 14:41:25 -0800350 err = drm_copy_field(version->name, &version->name_len,
351 dev->driver->name);
352 if (!err)
353 err = drm_copy_field(version->date, &version->date_len,
354 dev->driver->date);
355 if (!err)
356 err = drm_copy_field(version->desc, &version->desc_len,
357 dev->driver->desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Andres Salomondad07ca2009-11-17 14:41:25 -0800359 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360}
361
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000362/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 * Called whenever a process performs an ioctl on /dev/drm.
364 *
365 * \param inode device inode.
Eric Anholt6c340ea2007-08-25 20:23:09 +1000366 * \param file_priv DRM file private.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 * \param cmd command.
368 * \param arg user argument.
369 * \return zero on success or negative number on failure.
370 *
371 * Looks up the ioctl function in the ::ioctls table, checking for root
372 * previleges if so required, and dispatches to the respective function.
373 */
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000374long drm_ioctl(struct file *filp,
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000375 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376{
Eric Anholt6c340ea2007-08-25 20:23:09 +1000377 struct drm_file *file_priv = filp->private_data;
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000378 struct drm_device *dev;
Eric Anholtc153f452007-09-03 12:06:45 +1000379 struct drm_ioctl_desc *ioctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 drm_ioctl_t *func;
381 unsigned int nr = DRM_IOCTL_NR(cmd);
382 int retcode = -EINVAL;
Eric Anholt955a23e2009-03-19 18:56:14 -0700383 char stack_kdata[128];
Eric Anholtc153f452007-09-03 12:06:45 +1000384 char *kdata = NULL;
Dave Airlie1b2f1482010-08-14 20:20:34 +1000385 unsigned int usize, asize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000387 dev = file_priv->minor->dev;
Dave Airlie2c07a212012-02-20 14:18:07 +0000388
389 if (drm_device_is_unplugged(dev))
390 return -ENODEV;
391
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000392 atomic_inc(&dev->ioctl_count);
393 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
Eric Anholt6c340ea2007-08-25 20:23:09 +1000394 ++file_priv->ioctl_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000396 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
Pavel Emelyanovba25f9d2007-10-18 23:40:40 -0700397 task_pid_nr(current), cmd, nr,
Dave Airlie2c14f282008-04-21 16:47:32 +1000398 (long)old_encode_dev(file_priv->minor->device),
Eric Anholt6c340ea2007-08-25 20:23:09 +1000399 file_priv->authenticated);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000400
Dave Airlie0515b932007-05-08 15:28:15 +1000401 if ((nr >= DRM_CORE_IOCTL_COUNT) &&
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100402 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
403 goto err_i1;
Dave Airlie0515b932007-05-08 15:28:15 +1000404 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
Dave Airlie1b2f1482010-08-14 20:20:34 +1000405 (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
406 u32 drv_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
Dave Airlie1b2f1482010-08-14 20:20:34 +1000408 drv_size = _IOC_SIZE(ioctl->cmd_drv);
409 usize = asize = _IOC_SIZE(cmd);
410 if (drv_size > asize)
411 asize = drv_size;
412 }
Dave Airlie858a3682008-06-20 15:42:38 +1000413 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100414 ioctl = &drm_ioctls[nr];
Dave Airlie858a3682008-06-20 15:42:38 +1000415 cmd = ioctl->cmd;
Dave Airlie1b2f1482010-08-14 20:20:34 +1000416 usize = asize = _IOC_SIZE(cmd);
Dave Airlie858a3682008-06-20 15:42:38 +1000417 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 goto err_i1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000419
Johannes Weiner41ee2ff2008-06-13 15:04:40 +1000420 /* Do not trust userspace, use our own definition */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 func = ioctl->func;
422 /* is there a local override? */
423 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
424 func = dev->driver->dma_ioctl;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000425
426 if (!func) {
427 DRM_DEBUG("no function\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 retcode = -EINVAL;
Dave Airliea7a2cc32006-01-02 13:54:04 +1100429 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
Eric Anholt6c340ea2007-08-25 20:23:09 +1000430 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
Jonas Bonn59738d52009-04-24 15:05:02 +1000431 ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) ||
432 (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 retcode = -EACCES;
434 } else {
Eric Anholtc153f452007-09-03 12:06:45 +1000435 if (cmd & (IOC_IN | IOC_OUT)) {
Dave Airlie1b2f1482010-08-14 20:20:34 +1000436 if (asize <= sizeof(stack_kdata)) {
Eric Anholt955a23e2009-03-19 18:56:14 -0700437 kdata = stack_kdata;
438 } else {
Dave Airlie1b2f1482010-08-14 20:20:34 +1000439 kdata = kmalloc(asize, GFP_KERNEL);
Eric Anholt955a23e2009-03-19 18:56:14 -0700440 if (!kdata) {
441 retcode = -ENOMEM;
442 goto err_i1;
443 }
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000444 }
Rob Clarkdd2351d2011-09-18 14:38:15 -0500445 if (asize > usize)
446 memset(kdata + usize, 0, asize - usize);
Eric Anholtc153f452007-09-03 12:06:45 +1000447 }
448
449 if (cmd & IOC_IN) {
450 if (copy_from_user(kdata, (void __user *)arg,
Dave Airlie1b2f1482010-08-14 20:20:34 +1000451 usize) != 0) {
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000452 retcode = -EFAULT;
Eric Anholtc153f452007-09-03 12:06:45 +1000453 goto err_i1;
454 }
Dave Airlieb9f0aee2010-08-17 14:46:00 +1000455 } else
Dave Airlie1b2f1482010-08-14 20:20:34 +1000456 memset(kdata, 0, usize);
Dave Airlieb9f0aee2010-08-17 14:46:00 +1000457
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000458 if (ioctl->flags & DRM_UNLOCKED)
459 retcode = func(dev, kdata, file_priv);
460 else {
Arnd Bergmann58374712010-07-10 23:51:39 +0200461 mutex_lock(&drm_global_mutex);
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000462 retcode = func(dev, kdata, file_priv);
Arnd Bergmann58374712010-07-10 23:51:39 +0200463 mutex_unlock(&drm_global_mutex);
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000464 }
Eric Anholtc153f452007-09-03 12:06:45 +1000465
Michel Dänzer9b6fe312009-05-20 13:32:00 +0200466 if (cmd & IOC_OUT) {
Eric Anholtc153f452007-09-03 12:06:45 +1000467 if (copy_to_user((void __user *)arg, kdata,
Dave Airlie1b2f1482010-08-14 20:20:34 +1000468 usize) != 0)
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000469 retcode = -EFAULT;
Eric Anholtc153f452007-09-03 12:06:45 +1000470 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000472
473 err_i1:
Eric Anholt955a23e2009-03-19 18:56:14 -0700474 if (kdata != stack_kdata)
Eric Anholtc153f452007-09-03 12:06:45 +1000475 kfree(kdata);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000476 atomic_dec(&dev->ioctl_count);
477 if (retcode)
Yuanhan Liu4ef7fe72012-06-16 22:25:24 +0800478 DRM_DEBUG("ret = %d\n", retcode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 return retcode;
480}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000482EXPORT_SYMBOL(drm_ioctl);
Dave Airlieda509d72007-05-26 05:04:51 +1000483
Benjamin Herrenschmidtf77d3902009-02-02 16:55:46 +1100484struct drm_local_map *drm_getsarea(struct drm_device *dev)
Dave Airlieda509d72007-05-26 05:04:51 +1000485{
Dave Airlie55910512007-07-11 16:53:40 +1000486 struct drm_map_list *entry;
Dave Airlieda509d72007-05-26 05:04:51 +1000487
Dave Airlie6f710102007-05-28 19:41:35 +1000488 list_for_each_entry(entry, &dev->maplist, head) {
Dave Airlieda509d72007-05-26 05:04:51 +1000489 if (entry->map && entry->map->type == _DRM_SHM &&
490 (entry->map->flags & _DRM_CONTAINS_LOCK)) {
491 return entry->map;
492 }
493 }
494 return NULL;
495}
496EXPORT_SYMBOL(drm_getsarea);