blob: 84da748555bc824379d1b49733db1444f33fc8d5 [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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#include "drmP.h"
52#include "drm_core.h"
53
Ben Gamari955b12d2009-02-17 20:08:49 -050054
Eric Anholtc153f452007-09-03 12:06:45 +100055static int drm_version(struct drm_device *dev, void *data,
56 struct drm_file *file_priv);
Dave Airliec94f7022005-07-07 21:03:38 +100057
Dave Airlie1b2f1482010-08-14 20:20:34 +100058#define DRM_IOCTL_DEF(ioctl, _func, _flags) \
59 [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0}
60
Linus Torvalds1da177e2005-04-16 15:20:36 -070061/** Ioctl table */
Eric Anholtc153f452007-09-03 12:06:45 +100062static struct drm_ioctl_desc drm_ioctls[] = {
63 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
64 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
65 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
66 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
67 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
68 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
69 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
Jesse Barnes453a7d42009-08-19 15:51:55 +100070 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
Eric Anholtc153f452007-09-03 12:06:45 +100072 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
73 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
74 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Jesse Barnes453a7d42009-08-19 15:51:55 +100075 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER),
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Eric Anholtc153f452007-09-03 12:06:45 +100077 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
78 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Eric Anholtc153f452007-09-03 12:06:45 +100080 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
81 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
Dave Airlie7c1c2872008-11-28 14:22:24 +100083 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
84 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
85
Eric Anholtc153f452007-09-03 12:06:45 +100086 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
87 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
88 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
89 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
90 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
91 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
92 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Eric Anholtc153f452007-09-03 12:06:45 +100094 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
95 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -070096
Eric Anholtc153f452007-09-03 12:06:45 +100097 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
98 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Eric Anholtc153f452007-09-03 12:06:45 +1000100 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
101
102 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
103 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
104 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
105 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
106 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
Eric Anholtc153f452007-09-03 12:06:45 +1000108 DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Eric Anholtc153f452007-09-03 12:06:45 +1000110 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
112#if __OS_HAS_AGP
Eric Anholtc153f452007-09-03 12:06:45 +1000113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
115 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
117 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
118 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
119 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
120 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 -0700121#endif
122
Eric Anholtc153f452007-09-03 12:06:45 +1000123 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
124 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125
Eric Anholtc153f452007-09-03 12:06:45 +1000126 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
=?utf-8?q?Michel_D=C3=A4nzer?=bea56792006-10-24 23:04:19 +1000127
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700128 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
129
Eric Anholtc153f452007-09-03 12:06:45 +1000130 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Eric Anholt673a3942008-07-30 12:06:12 -0700131
Dave Airlie9a1420d2010-02-03 19:14:35 +1000132 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
133 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
134 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
Dave Airlief453ba02008-11-07 14:05:41 -0800135
Dave Airlie9a1420d2010-02-03 19:14:35 +1000136 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
137 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
138 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
139 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
140 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED),
141 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
142 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
143 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
144 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
145 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
146 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
147 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
148 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
149 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
150 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
151 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
152 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
153 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154};
155
Dave Airlie0515b932007-05-08 15:28:15 +1000156#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157
158/**
159 * Take down the DRM device.
160 *
161 * \param dev DRM device structure.
162 *
163 * Frees every resource in \p dev.
164 *
Dave Airlieaff138a2005-07-10 16:58:40 +1000165 * \sa drm_device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000167int drm_lastclose(struct drm_device * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168{
Dave Airlie8fc2fdf2007-07-11 16:21:47 +1000169 struct drm_vma_entry *vma, *vma_temp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 int i;
171
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000172 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
Dave Airlie22eae942005-11-10 22:16:34 +1100174 if (dev->driver->lastclose)
175 dev->driver->lastclose(dev);
176 DRM_DEBUG("driver lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
Dave Airlief453ba02008-11-07 14:05:41 -0800178 if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET))
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000179 drm_irq_uninstall(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Dave Airlie30e2fb12006-02-02 19:37:46 +1100181 mutex_lock(&dev->struct_mutex);
Dave Airlied4e2cbe2007-07-17 10:55:47 +1000182
183 /* Free drawable information memory */
184 drm_drawable_free_all(dev);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000185 del_timer(&dev->timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000187 /* Clear AGP information */
Dave Airlief453ba02008-11-07 14:05:41 -0800188 if (drm_core_has_AGP(dev) && dev->agp &&
Ben Gamari955b12d2009-02-17 20:08:49 -0500189 !drm_core_check_feature(dev, DRIVER_MODESET)) {
Dave Airlie55910512007-07-11 16:53:40 +1000190 struct drm_agp_mem *entry, *tempe;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000192 /* Remove AGP resources, but leave dev->agp
193 intact until drv_cleanup is called. */
Dave Airliebd1b3312007-05-26 05:01:51 +1000194 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000195 if (entry->bound)
196 drm_unbind_agp(entry->memory);
197 drm_free_agp(entry->memory, entry->pages);
Eric Anholt9a298b22009-03-24 12:23:04 -0700198 kfree(entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 }
Dave Airliebd1b3312007-05-26 05:01:51 +1000200 INIT_LIST_HEAD(&dev->agp->memory);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
Dave Airlie7ab98402005-07-10 16:56:52 +1000202 if (dev->agp->acquired)
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000203 drm_agp_release(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
205 dev->agp->acquired = 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000206 dev->agp->enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 }
Dave Airlief453ba02008-11-07 14:05:41 -0800208 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg &&
209 !drm_core_check_feature(dev, DRIVER_MODESET)) {
Dave Airlie836cf042005-07-10 19:27:04 +1000210 drm_sg_cleanup(dev->sg);
211 dev->sg = NULL;
212 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000214 /* Clear vma list (only built for debugging) */
Dave Airliebd1b3312007-05-26 05:01:51 +1000215 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
216 list_del(&vma->head);
Eric Anholt9a298b22009-03-24 12:23:04 -0700217 kfree(vma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 }
219
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000220 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
221 for (i = 0; i < dev->queue_count; i++) {
Eric Anholt9a298b22009-03-24 12:23:04 -0700222 kfree(dev->queuelist[i]);
223 dev->queuelist[i] = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 }
Eric Anholt9a298b22009-03-24 12:23:04 -0700225 kfree(dev->queuelist);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 dev->queuelist = NULL;
227 }
228 dev->queue_count = 0;
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/**
242 * Module initialization. Called via init_module at module load time, or via
243 * linux/init/main.c (this is not currently supported).
244 *
245 * \return zero on success or a negative number on failure.
246 *
247 * Initializes an array of drm_device structures, and attempts to
248 * initialize all available devices, using consecutive minors, registering the
Jordan Crousedcdb1672010-05-27 13:40:25 -0600249 * stubs and initializing the device.
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000250 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
252 * after the initialization for driver customization.
253 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000254int drm_init(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255{
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000256 DRM_DEBUG("\n");
Dave Airliee7f7ab42008-11-28 13:43:47 +1000257 INIT_LIST_HEAD(&driver->device_list);
258
Jordan Crousedcdb1672010-05-27 13:40:25 -0600259 if (driver->driver_features & DRIVER_USE_PLATFORM_DEVICE)
260 return drm_platform_init(driver);
261 else
262 return drm_pci_init(driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000264
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265EXPORT_SYMBOL(drm_init);
266
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000267void drm_exit(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
Dave Airliee7f7ab42008-11-28 13:43:47 +1000269 struct drm_device *dev, *tmp;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000270 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
Kristian Høgsberg112b7152009-01-04 16:55:33 -0500272 if (driver->driver_features & DRIVER_MODESET) {
273 pci_unregister_driver(&driver->pci_driver);
274 } else {
275 list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item)
276 drm_put_dev(dev);
277 }
Dave Airlie2c14f282008-04-21 16:47:32 +1000278
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000279 DRM_INFO("Module unloaded\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000281
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282EXPORT_SYMBOL(drm_exit);
283
284/** File operations structure */
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800285static const struct file_operations drm_stub_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 .owner = THIS_MODULE,
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000287 .open = drm_stub_open
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288};
289
290static int __init drm_core_init(void)
291{
292 int ret = -ENOMEM;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000293
Dave Airlieba4420c2010-03-09 10:56:52 +1000294 drm_global_init();
Dave Airlie2c14f282008-04-21 16:47:32 +1000295 idr_init(&drm_minors_idr);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
298 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
301 if (IS_ERR(drm_class)) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000302 printk(KERN_ERR "DRM: Error creating drm class.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 ret = PTR_ERR(drm_class);
304 goto err_p2;
305 }
306
Al Viro66600222005-09-28 22:32:57 +0100307 drm_proc_root = proc_mkdir("dri", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 if (!drm_proc_root) {
309 DRM_ERROR("Cannot create /proc/dri\n");
310 ret = -1;
311 goto err_p3;
312 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000313
Ben Gamari955b12d2009-02-17 20:08:49 -0500314 drm_debugfs_root = debugfs_create_dir("dri", NULL);
315 if (!drm_debugfs_root) {
GeunSik Lim156f5a72009-06-02 15:01:37 +0900316 DRM_ERROR("Cannot create /sys/kernel/debug/dri\n");
Ben Gamari955b12d2009-02-17 20:08:49 -0500317 ret = -1;
318 goto err_p3;
319 }
320
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000321 DRM_INFO("Initialized %s %d.%d.%d %s\n",
322 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 return 0;
Jesse Barnese8b962b2007-11-22 14:02:38 +1000324err_p3:
325 drm_sysfs_destroy();
326err_p2:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 unregister_chrdev(DRM_MAJOR, "drm");
Dave Airlie2c14f282008-04-21 16:47:32 +1000328
329 idr_destroy(&drm_minors_idr);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000330err_p1:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return ret;
332}
333
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000334static void __exit drm_core_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335{
336 remove_proc_entry("dri", NULL);
Ben Gamari955b12d2009-02-17 20:08:49 -0500337 debugfs_remove(drm_debugfs_root);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000338 drm_sysfs_destroy();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 unregister_chrdev(DRM_MAJOR, "drm");
341
Chris Wilsonddd3d062010-07-24 22:28:25 +0100342 idr_remove_all(&drm_minors_idr);
Dave Airlie2c14f282008-04-21 16:47:32 +1000343 idr_destroy(&drm_minors_idr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344}
345
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000346module_init(drm_core_init);
347module_exit(drm_core_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
349/**
Andres Salomon156822f2009-11-17 14:41:23 -0800350 * Copy and IOCTL return string to user space
351 */
Andres Salomon140a45f2009-11-17 14:41:24 -0800352static int drm_copy_field(char *buf, size_t *buf_len, const char *value)
353{
354 int len;
355
356 /* don't overflow userbuf */
357 len = strlen(value);
358 if (len > *buf_len)
359 len = *buf_len;
360
361 /* let userspace know exact length of driver value (which could be
362 * larger than the userspace-supplied buffer) */
363 *buf_len = strlen(value);
364
365 /* finally, try filling in the userbuf */
366 if (len && buf)
367 if (copy_to_user(buf, value, len))
368 return -EFAULT;
369 return 0;
370}
Andres Salomon156822f2009-11-17 14:41:23 -0800371
372/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 * Get version information
374 *
375 * \param inode device inode.
376 * \param filp file pointer.
377 * \param cmd command.
378 * \param arg user argument, pointing to a drm_version structure.
379 * \return zero on success or negative number on failure.
380 *
381 * Fills in the version information in \p arg.
382 */
Eric Anholtc153f452007-09-03 12:06:45 +1000383static int drm_version(struct drm_device *dev, void *data,
384 struct drm_file *file_priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385{
Eric Anholtc153f452007-09-03 12:06:45 +1000386 struct drm_version *version = data;
Andres Salomondad07ca2009-11-17 14:41:25 -0800387 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
Eric Anholtc153f452007-09-03 12:06:45 +1000389 version->version_major = dev->driver->major;
390 version->version_minor = dev->driver->minor;
391 version->version_patchlevel = dev->driver->patchlevel;
Andres Salomondad07ca2009-11-17 14:41:25 -0800392 err = drm_copy_field(version->name, &version->name_len,
393 dev->driver->name);
394 if (!err)
395 err = drm_copy_field(version->date, &version->date_len,
396 dev->driver->date);
397 if (!err)
398 err = drm_copy_field(version->desc, &version->desc_len,
399 dev->driver->desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400
Andres Salomondad07ca2009-11-17 14:41:25 -0800401 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402}
403
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000404/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 * Called whenever a process performs an ioctl on /dev/drm.
406 *
407 * \param inode device inode.
Eric Anholt6c340ea2007-08-25 20:23:09 +1000408 * \param file_priv DRM file private.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 * \param cmd command.
410 * \param arg user argument.
411 * \return zero on success or negative number on failure.
412 *
413 * Looks up the ioctl function in the ::ioctls table, checking for root
414 * previleges if so required, and dispatches to the respective function.
415 */
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000416long drm_ioctl(struct file *filp,
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000417 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
Eric Anholt6c340ea2007-08-25 20:23:09 +1000419 struct drm_file *file_priv = filp->private_data;
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000420 struct drm_device *dev;
Eric Anholtc153f452007-09-03 12:06:45 +1000421 struct drm_ioctl_desc *ioctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 drm_ioctl_t *func;
423 unsigned int nr = DRM_IOCTL_NR(cmd);
424 int retcode = -EINVAL;
Eric Anholt955a23e2009-03-19 18:56:14 -0700425 char stack_kdata[128];
Eric Anholtc153f452007-09-03 12:06:45 +1000426 char *kdata = NULL;
Dave Airlie1b2f1482010-08-14 20:20:34 +1000427 unsigned int usize, asize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000429 dev = file_priv->minor->dev;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000430 atomic_inc(&dev->ioctl_count);
431 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
Eric Anholt6c340ea2007-08-25 20:23:09 +1000432 ++file_priv->ioctl_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000434 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
Pavel Emelyanovba25f9d2007-10-18 23:40:40 -0700435 task_pid_nr(current), cmd, nr,
Dave Airlie2c14f282008-04-21 16:47:32 +1000436 (long)old_encode_dev(file_priv->minor->device),
Eric Anholt6c340ea2007-08-25 20:23:09 +1000437 file_priv->authenticated);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000438
Dave Airlie0515b932007-05-08 15:28:15 +1000439 if ((nr >= DRM_CORE_IOCTL_COUNT) &&
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100440 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
441 goto err_i1;
Dave Airlie0515b932007-05-08 15:28:15 +1000442 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
Dave Airlie1b2f1482010-08-14 20:20:34 +1000443 (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
444 u32 drv_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
Dave Airlie1b2f1482010-08-14 20:20:34 +1000446 drv_size = _IOC_SIZE(ioctl->cmd_drv);
447 usize = asize = _IOC_SIZE(cmd);
448 if (drv_size > asize)
449 asize = drv_size;
450 }
Dave Airlie858a3682008-06-20 15:42:38 +1000451 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100452 ioctl = &drm_ioctls[nr];
Dave Airlie858a3682008-06-20 15:42:38 +1000453 cmd = ioctl->cmd;
Dave Airlie1b2f1482010-08-14 20:20:34 +1000454 usize = asize = _IOC_SIZE(cmd);
Dave Airlie858a3682008-06-20 15:42:38 +1000455 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 goto err_i1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000457
Johannes Weiner41ee2ff2008-06-13 15:04:40 +1000458 /* Do not trust userspace, use our own definition */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 func = ioctl->func;
460 /* is there a local override? */
461 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
462 func = dev->driver->dma_ioctl;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000463
464 if (!func) {
465 DRM_DEBUG("no function\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 retcode = -EINVAL;
Dave Airliea7a2cc32006-01-02 13:54:04 +1100467 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
Eric Anholt6c340ea2007-08-25 20:23:09 +1000468 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
Jonas Bonn59738d52009-04-24 15:05:02 +1000469 ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) ||
470 (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 retcode = -EACCES;
472 } else {
Eric Anholtc153f452007-09-03 12:06:45 +1000473 if (cmd & (IOC_IN | IOC_OUT)) {
Dave Airlie1b2f1482010-08-14 20:20:34 +1000474 if (asize <= sizeof(stack_kdata)) {
Eric Anholt955a23e2009-03-19 18:56:14 -0700475 kdata = stack_kdata;
476 } else {
Dave Airlie1b2f1482010-08-14 20:20:34 +1000477 kdata = kmalloc(asize, GFP_KERNEL);
Eric Anholt955a23e2009-03-19 18:56:14 -0700478 if (!kdata) {
479 retcode = -ENOMEM;
480 goto err_i1;
481 }
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000482 }
Eric Anholtc153f452007-09-03 12:06:45 +1000483 }
484
485 if (cmd & IOC_IN) {
486 if (copy_from_user(kdata, (void __user *)arg,
Dave Airlie1b2f1482010-08-14 20:20:34 +1000487 usize) != 0) {
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000488 retcode = -EFAULT;
Eric Anholtc153f452007-09-03 12:06:45 +1000489 goto err_i1;
490 }
Dave Airlieb9f0aee2010-08-17 14:46:00 +1000491 } else
Dave Airlie1b2f1482010-08-14 20:20:34 +1000492 memset(kdata, 0, usize);
Dave Airlieb9f0aee2010-08-17 14:46:00 +1000493
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000494 if (ioctl->flags & DRM_UNLOCKED)
495 retcode = func(dev, kdata, file_priv);
496 else {
Arnd Bergmann58374712010-07-10 23:51:39 +0200497 mutex_lock(&drm_global_mutex);
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000498 retcode = func(dev, kdata, file_priv);
Arnd Bergmann58374712010-07-10 23:51:39 +0200499 mutex_unlock(&drm_global_mutex);
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000500 }
Eric Anholtc153f452007-09-03 12:06:45 +1000501
Michel Dänzer9b6fe312009-05-20 13:32:00 +0200502 if (cmd & IOC_OUT) {
Eric Anholtc153f452007-09-03 12:06:45 +1000503 if (copy_to_user((void __user *)arg, kdata,
Dave Airlie1b2f1482010-08-14 20:20:34 +1000504 usize) != 0)
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000505 retcode = -EFAULT;
Eric Anholtc153f452007-09-03 12:06:45 +1000506 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000508
509 err_i1:
Eric Anholt955a23e2009-03-19 18:56:14 -0700510 if (kdata != stack_kdata)
Eric Anholtc153f452007-09-03 12:06:45 +1000511 kfree(kdata);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000512 atomic_dec(&dev->ioctl_count);
513 if (retcode)
514 DRM_DEBUG("ret = %x\n", retcode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 return retcode;
516}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000518EXPORT_SYMBOL(drm_ioctl);
Dave Airlieda509d72007-05-26 05:04:51 +1000519
Benjamin Herrenschmidtf77d3902009-02-02 16:55:46 +1100520struct drm_local_map *drm_getsarea(struct drm_device *dev)
Dave Airlieda509d72007-05-26 05:04:51 +1000521{
Dave Airlie55910512007-07-11 16:53:40 +1000522 struct drm_map_list *entry;
Dave Airlieda509d72007-05-26 05:04:51 +1000523
Dave Airlie6f710102007-05-28 19:41:35 +1000524 list_for_each_entry(entry, &dev->maplist, head) {
Dave Airlieda509d72007-05-26 05:04:51 +1000525 if (entry->map && entry->map->type == _DRM_SHM &&
526 (entry->map->flags & _DRM_CONTAINS_LOCK)) {
527 return entry->map;
528 }
529 }
530 return NULL;
531}
532EXPORT_SYMBOL(drm_getsarea);