blob: c4ada8b6295be28ab60b3edc6f3958fd68e6f66b [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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#include "drmP.h"
51#include "drm_core.h"
52
Ben Gamari955b12d2009-02-17 20:08:49 -050053
Eric Anholtc153f452007-09-03 12:06:45 +100054static int drm_version(struct drm_device *dev, void *data,
55 struct drm_file *file_priv);
Dave Airliec94f7022005-07-07 21:03:38 +100056
Linus Torvalds1da177e2005-04-16 15:20:36 -070057/** Ioctl table */
Eric Anholtc153f452007-09-03 12:06:45 +100058static struct drm_ioctl_desc drm_ioctls[] = {
59 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
60 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
61 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
62 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
63 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
64 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
65 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
66 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
Eric Anholtc153f452007-09-03 12:06:45 +100068 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
69 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
70 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
71 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Eric Anholtc153f452007-09-03 12:06:45 +100073 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
74 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
Eric Anholtc153f452007-09-03 12:06:45 +100076 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
77 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Dave Airlie7c1c2872008-11-28 14:22:24 +100079 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
80 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
81
Eric Anholtc153f452007-09-03 12:06:45 +100082 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
83 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
84 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
85 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
86 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
87 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
88 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Eric Anholtc153f452007-09-03 12:06:45 +100090 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
91 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
Eric Anholtc153f452007-09-03 12:06:45 +100093 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
94 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
Eric Anholtc153f452007-09-03 12:06:45 +100096 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
97
98 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
99 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
100 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
101 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
102 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
Eric Anholtc153f452007-09-03 12:06:45 +1000104 DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Eric Anholtc153f452007-09-03 12:06:45 +1000106 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
108#if __OS_HAS_AGP
Eric Anholtc153f452007-09-03 12:06:45 +1000109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
115 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116 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 -0700117#endif
118
Eric Anholtc153f452007-09-03 12:06:45 +1000119 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
120 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Eric Anholtc153f452007-09-03 12:06:45 +1000122 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
=?utf-8?q?Michel_D=C3=A4nzer?=bea56792006-10-24 23:04:19 +1000123
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700124 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
125
Eric Anholtc153f452007-09-03 12:06:45 +1000126 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 -0700127
128 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0),
129 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH),
130 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH),
Dave Airlief453ba02008-11-07 14:05:41 -0800131
132 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW),
133 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW),
Dave Airlief453ba02008-11-07 14:05:41 -0800134 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW),
135 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
Jakob Bornecrantze0c84632008-12-19 14:50:50 +1000136 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER),
137 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER),
138 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW),
139 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW),
Dave Airlief453ba02008-11-07 14:05:41 -0800140 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
141 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
142 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW),
Jakob Bornecrantze0c84632008-12-19 14:50:50 +1000143 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
144 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
145 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW),
146 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW),
147 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148};
149
Dave Airlie0515b932007-05-08 15:28:15 +1000150#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
152/**
153 * Take down the DRM device.
154 *
155 * \param dev DRM device structure.
156 *
157 * Frees every resource in \p dev.
158 *
Dave Airlieaff138a2005-07-10 16:58:40 +1000159 * \sa drm_device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000161int drm_lastclose(struct drm_device * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{
Dave Airlie8fc2fdf2007-07-11 16:21:47 +1000163 struct drm_vma_entry *vma, *vma_temp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 int i;
165
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000166 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
Dave Airlie22eae942005-11-10 22:16:34 +1100168 if (dev->driver->lastclose)
169 dev->driver->lastclose(dev);
170 DRM_DEBUG("driver lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Dave Airlief453ba02008-11-07 14:05:41 -0800172 if (dev->irq_enabled && !drm_core_check_feature(dev, DRIVER_MODESET))
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000173 drm_irq_uninstall(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Dave Airlie30e2fb12006-02-02 19:37:46 +1100175 mutex_lock(&dev->struct_mutex);
Dave Airlied4e2cbe2007-07-17 10:55:47 +1000176
177 /* Free drawable information memory */
178 drm_drawable_free_all(dev);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000179 del_timer(&dev->timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000181 /* Clear AGP information */
Dave Airlief453ba02008-11-07 14:05:41 -0800182 if (drm_core_has_AGP(dev) && dev->agp &&
Ben Gamari955b12d2009-02-17 20:08:49 -0500183 !drm_core_check_feature(dev, DRIVER_MODESET)) {
Dave Airlie55910512007-07-11 16:53:40 +1000184 struct drm_agp_mem *entry, *tempe;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000186 /* Remove AGP resources, but leave dev->agp
187 intact until drv_cleanup is called. */
Dave Airliebd1b3312007-05-26 05:01:51 +1000188 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000189 if (entry->bound)
190 drm_unbind_agp(entry->memory);
191 drm_free_agp(entry->memory, entry->pages);
192 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 }
Dave Airliebd1b3312007-05-26 05:01:51 +1000194 INIT_LIST_HEAD(&dev->agp->memory);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
Dave Airlie7ab98402005-07-10 16:56:52 +1000196 if (dev->agp->acquired)
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000197 drm_agp_release(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198
199 dev->agp->acquired = 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000200 dev->agp->enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 }
Dave Airlief453ba02008-11-07 14:05:41 -0800202 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg &&
203 !drm_core_check_feature(dev, DRIVER_MODESET)) {
Dave Airlie836cf042005-07-10 19:27:04 +1000204 drm_sg_cleanup(dev->sg);
205 dev->sg = NULL;
206 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000208 /* Clear vma list (only built for debugging) */
Dave Airliebd1b3312007-05-26 05:01:51 +1000209 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
210 list_del(&vma->head);
211 drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 }
213
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000214 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
215 for (i = 0; i < dev->queue_count; i++) {
216 if (dev->queuelist[i]) {
217 drm_free(dev->queuelist[i],
218 sizeof(*dev->queuelist[0]),
219 DRM_MEM_QUEUES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 dev->queuelist[i] = NULL;
221 }
222 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000223 drm_free(dev->queuelist,
224 dev->queue_slots * sizeof(*dev->queuelist),
225 DRM_MEM_QUEUES);
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
249 * stubs and initializing the AGP 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{
256 struct pci_dev *pdev = NULL;
Kristian Høgsberg112b7152009-01-04 16:55:33 -0500257 const struct pci_device_id *pid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 int i;
259
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000260 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
Dave Airliee7f7ab42008-11-28 13:43:47 +1000262 INIT_LIST_HEAD(&driver->device_list);
263
Kristian Høgsberg112b7152009-01-04 16:55:33 -0500264 if (driver->driver_features & DRIVER_MODESET)
265 return pci_register_driver(&driver->pci_driver);
266
267 /* If not using KMS, fall back to stealth mode manual scanning. */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000268 for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
Kristian Høgsberg112b7152009-01-04 16:55:33 -0500269 pid = &driver->pci_driver.id_table[i];
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000270
Dave Airlieafa21e02008-11-11 18:02:12 +1000271 /* Loop around setting up a DRM device for each PCI device
272 * matching our ID and device class. If we had the internal
273 * function that pci_get_subsys and pci_get_class used, we'd
274 * be able to just pass pid in instead of doing a two-stage
275 * thing.
276 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000277 pdev = NULL;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000278 while ((pdev =
279 pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
280 pid->subdevice, pdev)) != NULL) {
Dave Airlieafa21e02008-11-11 18:02:12 +1000281 if ((pdev->class & pid->class_mask) != pid->class)
282 continue;
283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 /* stealth mode requires a manual probe */
285 pci_dev_get(pdev);
286 drm_get_dev(pdev, pid, driver);
287 }
288 }
289 return 0;
290}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000291
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292EXPORT_SYMBOL(drm_init);
293
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000294void drm_exit(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295{
Dave Airliee7f7ab42008-11-28 13:43:47 +1000296 struct drm_device *dev, *tmp;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000297 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
Kristian Høgsberg112b7152009-01-04 16:55:33 -0500299 if (driver->driver_features & DRIVER_MODESET) {
300 pci_unregister_driver(&driver->pci_driver);
301 } else {
302 list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item)
303 drm_put_dev(dev);
304 }
Dave Airlie2c14f282008-04-21 16:47:32 +1000305
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000306 DRM_INFO("Module unloaded\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000308
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309EXPORT_SYMBOL(drm_exit);
310
311/** File operations structure */
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800312static const struct file_operations drm_stub_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 .owner = THIS_MODULE,
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000314 .open = drm_stub_open
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315};
316
317static int __init drm_core_init(void)
318{
319 int ret = -ENOMEM;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000320
Dave Airlie2c14f282008-04-21 16:47:32 +1000321 idr_init(&drm_minors_idr);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000322
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
324 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000325
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
327 if (IS_ERR(drm_class)) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000328 printk(KERN_ERR "DRM: Error creating drm class.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 ret = PTR_ERR(drm_class);
330 goto err_p2;
331 }
332
Al Viro66600222005-09-28 22:32:57 +0100333 drm_proc_root = proc_mkdir("dri", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 if (!drm_proc_root) {
335 DRM_ERROR("Cannot create /proc/dri\n");
336 ret = -1;
337 goto err_p3;
338 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000339
Ben Gamari955b12d2009-02-17 20:08:49 -0500340 drm_debugfs_root = debugfs_create_dir("dri", NULL);
341 if (!drm_debugfs_root) {
342 DRM_ERROR("Cannot create /debugfs/dri\n");
343 ret = -1;
344 goto err_p3;
345 }
346
Dave Airlie3260f9f2007-11-22 18:43:46 +1000347 drm_mem_init();
348
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000349 DRM_INFO("Initialized %s %d.%d.%d %s\n",
350 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 return 0;
Jesse Barnese8b962b2007-11-22 14:02:38 +1000352err_p3:
353 drm_sysfs_destroy();
354err_p2:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 unregister_chrdev(DRM_MAJOR, "drm");
Dave Airlie2c14f282008-04-21 16:47:32 +1000356
357 idr_destroy(&drm_minors_idr);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000358err_p1:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 return ret;
360}
361
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000362static void __exit drm_core_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363{
364 remove_proc_entry("dri", NULL);
Ben Gamari955b12d2009-02-17 20:08:49 -0500365 debugfs_remove(drm_debugfs_root);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000366 drm_sysfs_destroy();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
368 unregister_chrdev(DRM_MAJOR, "drm");
369
Dave Airlie2c14f282008-04-21 16:47:32 +1000370 idr_destroy(&drm_minors_idr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371}
372
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000373module_init(drm_core_init);
374module_exit(drm_core_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
376/**
377 * Get version information
378 *
379 * \param inode device inode.
380 * \param filp file pointer.
381 * \param cmd command.
382 * \param arg user argument, pointing to a drm_version structure.
383 * \return zero on success or negative number on failure.
384 *
385 * Fills in the version information in \p arg.
386 */
Eric Anholtc153f452007-09-03 12:06:45 +1000387static int drm_version(struct drm_device *dev, void *data,
388 struct drm_file *file_priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389{
Eric Anholtc153f452007-09-03 12:06:45 +1000390 struct drm_version *version = data;
Dave Airlie22eae942005-11-10 22:16:34 +1100391 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
Eric Anholtc153f452007-09-03 12:06:45 +1000393 version->version_major = dev->driver->major;
394 version->version_minor = dev->driver->minor;
395 version->version_patchlevel = dev->driver->patchlevel;
396 DRM_COPY(version->name, dev->driver->name);
397 DRM_COPY(version->date, dev->driver->date);
398 DRM_COPY(version->desc, dev->driver->desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 return 0;
401}
402
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000403/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 * Called whenever a process performs an ioctl on /dev/drm.
405 *
406 * \param inode device inode.
Eric Anholt6c340ea2007-08-25 20:23:09 +1000407 * \param file_priv DRM file private.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 * \param cmd command.
409 * \param arg user argument.
410 * \return zero on success or negative number on failure.
411 *
412 * Looks up the ioctl function in the ::ioctls table, checking for root
413 * previleges if so required, and dispatches to the respective function.
414 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000415int drm_ioctl(struct inode *inode, struct file *filp,
416 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417{
Eric Anholt6c340ea2007-08-25 20:23:09 +1000418 struct drm_file *file_priv = filp->private_data;
Dave Airlie2c14f282008-04-21 16:47:32 +1000419 struct drm_device *dev = file_priv->minor->dev;
Eric Anholtc153f452007-09-03 12:06:45 +1000420 struct drm_ioctl_desc *ioctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 drm_ioctl_t *func;
422 unsigned int nr = DRM_IOCTL_NR(cmd);
423 int retcode = -EINVAL;
Eric Anholt955a23e2009-03-19 18:56:14 -0700424 char stack_kdata[128];
Eric Anholtc153f452007-09-03 12:06:45 +1000425 char *kdata = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000427 atomic_inc(&dev->ioctl_count);
428 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
Eric Anholt6c340ea2007-08-25 20:23:09 +1000429 ++file_priv->ioctl_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000431 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
Pavel Emelyanovba25f9d2007-10-18 23:40:40 -0700432 task_pid_nr(current), cmd, nr,
Dave Airlie2c14f282008-04-21 16:47:32 +1000433 (long)old_encode_dev(file_priv->minor->device),
Eric Anholt6c340ea2007-08-25 20:23:09 +1000434 file_priv->authenticated);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000435
Dave Airlie0515b932007-05-08 15:28:15 +1000436 if ((nr >= DRM_CORE_IOCTL_COUNT) &&
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100437 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
438 goto err_i1;
Dave Airlie0515b932007-05-08 15:28:15 +1000439 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
440 (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
Dave Airlie858a3682008-06-20 15:42:38 +1000442 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100443 ioctl = &drm_ioctls[nr];
Dave Airlie858a3682008-06-20 15:42:38 +1000444 cmd = ioctl->cmd;
445 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 goto err_i1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000447
Johannes Weiner41ee2ff2008-06-13 15:04:40 +1000448 /* Do not trust userspace, use our own definition */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 func = ioctl->func;
450 /* is there a local override? */
451 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
452 func = dev->driver->dma_ioctl;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000453
454 if (!func) {
455 DRM_DEBUG("no function\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 retcode = -EINVAL;
Dave Airliea7a2cc32006-01-02 13:54:04 +1100457 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
Eric Anholt6c340ea2007-08-25 20:23:09 +1000458 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
Dave Airliedf989372008-12-19 12:00:46 +1100459 ((ioctl->flags & DRM_MASTER) && !file_priv->is_master)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 retcode = -EACCES;
461 } else {
Eric Anholtc153f452007-09-03 12:06:45 +1000462 if (cmd & (IOC_IN | IOC_OUT)) {
Eric Anholt955a23e2009-03-19 18:56:14 -0700463 if (_IOC_SIZE(cmd) <= sizeof(stack_kdata)) {
464 kdata = stack_kdata;
465 } else {
466 kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
467 if (!kdata) {
468 retcode = -ENOMEM;
469 goto err_i1;
470 }
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000471 }
Eric Anholtc153f452007-09-03 12:06:45 +1000472 }
473
474 if (cmd & IOC_IN) {
475 if (copy_from_user(kdata, (void __user *)arg,
476 _IOC_SIZE(cmd)) != 0) {
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000477 retcode = -EFAULT;
Eric Anholtc153f452007-09-03 12:06:45 +1000478 goto err_i1;
479 }
480 }
481 retcode = func(dev, kdata, file_priv);
482
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000483 if ((retcode == 0) && (cmd & IOC_OUT)) {
Eric Anholtc153f452007-09-03 12:06:45 +1000484 if (copy_to_user((void __user *)arg, kdata,
485 _IOC_SIZE(cmd)) != 0)
Dave Airlie9d5b3ff2008-02-07 14:51:32 +1000486 retcode = -EFAULT;
Eric Anholtc153f452007-09-03 12:06:45 +1000487 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000489
490 err_i1:
Eric Anholt955a23e2009-03-19 18:56:14 -0700491 if (kdata != stack_kdata)
Eric Anholtc153f452007-09-03 12:06:45 +1000492 kfree(kdata);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000493 atomic_dec(&dev->ioctl_count);
494 if (retcode)
495 DRM_DEBUG("ret = %x\n", retcode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 return retcode;
497}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000499EXPORT_SYMBOL(drm_ioctl);
Dave Airlieda509d72007-05-26 05:04:51 +1000500
Benjamin Herrenschmidtf77d3902009-02-02 16:55:46 +1100501struct drm_local_map *drm_getsarea(struct drm_device *dev)
Dave Airlieda509d72007-05-26 05:04:51 +1000502{
Dave Airlie55910512007-07-11 16:53:40 +1000503 struct drm_map_list *entry;
Dave Airlieda509d72007-05-26 05:04:51 +1000504
Dave Airlie6f710102007-05-28 19:41:35 +1000505 list_for_each_entry(entry, &dev->maplist, head) {
Dave Airlieda509d72007-05-26 05:04:51 +1000506 if (entry->map && entry->map->type == _DRM_SHM &&
507 (entry->map->flags & _DRM_CONTAINS_LOCK)) {
508 return entry->map;
509 }
510 }
511 return NULL;
512}
513EXPORT_SYMBOL(drm_getsarea);