blob: 56594fd373bf1feac63c9544306ba851387d398b [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
49#include "drmP.h"
50#include "drm_core.h"
51
Dave Airliec94f7022005-07-07 21:03:38 +100052static int drm_version(struct inode *inode, struct file *filp,
53 unsigned int cmd, unsigned long arg);
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055/** Ioctl table */
Dave Airlieb5e89ed2005-09-25 14:28:13 +100056static drm_ioctl_desc_t drm_ioctls[] = {
Dave Airliea7a2cc32006-01-02 13:54:04 +110057 [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0},
58 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0},
59 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0},
60 [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY},
61 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0},
62 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0},
63 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0},
64 [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, DRM_MASTER|DRM_ROOT_ONLY},
65 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
66 [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
67 [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
68 [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Dave Airliea7a2cc32006-01-02 13:54:04 +110070 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
71 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Dave Airliea7a2cc32006-01-02 13:54:04 +110073 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
74 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
Dave Airlie11bab7d2006-04-05 18:13:13 +100076 [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, DRM_AUTH|DRM_ROOT_ONLY},
77 [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, DRM_AUTH|DRM_ROOT_ONLY},
Dave Airliea7a2cc32006-01-02 13:54:04 +110078 [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
79 [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, DRM_AUTH},
80 [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
81 [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
82 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
Dave Airliea7a2cc32006-01-02 13:54:04 +110084 [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
85 [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Dave Airliea7a2cc32006-01-02 13:54:04 +110087 [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, DRM_AUTH},
88 [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Dave Airliea7a2cc32006-01-02 13:54:04 +110090 [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
Dave Airliea7a2cc32006-01-02 13:54:04 +110092 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
93 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
94 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, DRM_AUTH},
95 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, DRM_AUTH},
96 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
Dave Airliea7a2cc32006-01-02 13:54:04 +110098 [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {NULL, DRM_AUTH},
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Dave Airliea7a2cc32006-01-02 13:54:04 +1100100 [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
102#if __OS_HAS_AGP
Dave Airliea7a2cc32006-01-02 13:54:04 +1100103 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
104 [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
105 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
106 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, DRM_AUTH},
107 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
108 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
109 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
110 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111#endif
112
Dave Airliea7a2cc32006-01-02 13:54:04 +1100113 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
114 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
Dave Airliea7a2cc32006-01-02 13:54:04 +1100116 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0},
=?utf-8?q?Michel_D=C3=A4nzer?=bea56792006-10-24 23:04:19 +1000117
118 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119};
120
Dave Airlie0515b932007-05-08 15:28:15 +1000121#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
123/**
124 * Take down the DRM device.
125 *
126 * \param dev DRM device structure.
127 *
128 * Frees every resource in \p dev.
129 *
Dave Airlieaff138a2005-07-10 16:58:40 +1000130 * \sa drm_device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000132int drm_lastclose(struct drm_device * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133{
Dave Airlie8fc2fdf2007-07-11 16:21:47 +1000134 struct drm_magic_entry *pt, *next;
Dave Airliebd1b3312007-05-26 05:01:51 +1000135 drm_map_list_t *r_list, *list_t;
Dave Airlie8fc2fdf2007-07-11 16:21:47 +1000136 struct drm_vma_entry *vma, *vma_temp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 int i;
138
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000139 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
Dave Airlie22eae942005-11-10 22:16:34 +1100141 if (dev->driver->lastclose)
142 dev->driver->lastclose(dev);
143 DRM_DEBUG("driver lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145 if (dev->unique) {
146 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
147 dev->unique = NULL;
148 dev->unique_len = 0;
149 }
150
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000151 if (dev->irq_enabled)
152 drm_irq_uninstall(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
=?utf-8?q?Michel_D=C3=A4nzer?=cdec2f82006-10-24 23:20:15 +1000154 /* Free drawable information memory */
155 for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield);
156 i++) {
Dave Airliec60ce622007-07-11 15:27:12 +1000157 struct drm_drawable_info *info = drm_get_drawable_info(dev, i);
=?utf-8?q?Michel_D=C3=A4nzer?=cdec2f82006-10-24 23:20:15 +1000158
159 if (info) {
160 drm_free(info->rects, info->num_rects *
Dave Airliec60ce622007-07-11 15:27:12 +1000161 sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
=?utf-8?q?Michel_D=C3=A4nzer?=cdec2f82006-10-24 23:20:15 +1000162 drm_free(info, sizeof(*info), DRM_MEM_BUFS);
163 }
164 }
165
Dave Airlie30e2fb12006-02-02 19:37:46 +1100166 mutex_lock(&dev->struct_mutex);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000167 del_timer(&dev->timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000169 /* Clear pid list */
Thomas Hellstrom0a0c7212006-08-16 09:21:56 +1000170 if (dev->magicfree.next) {
171 list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
172 list_del(&pt->head);
173 drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
174 drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
175 }
Thomas Hellstrom1f4eccf2006-08-18 16:37:10 +1000176 drm_ht_remove(&dev->magiclist);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 }
178
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000179 /* Clear AGP information */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 if (drm_core_has_AGP(dev) && dev->agp) {
Dave Airliebd1b3312007-05-26 05:01:51 +1000181 drm_agp_mem_t *entry, *tempe;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000183 /* Remove AGP resources, but leave dev->agp
184 intact until drv_cleanup is called. */
Dave Airliebd1b3312007-05-26 05:01:51 +1000185 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000186 if (entry->bound)
187 drm_unbind_agp(entry->memory);
188 drm_free_agp(entry->memory, entry->pages);
189 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 }
Dave Airliebd1b3312007-05-26 05:01:51 +1000191 INIT_LIST_HEAD(&dev->agp->memory);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Dave Airlie7ab98402005-07-10 16:56:52 +1000193 if (dev->agp->acquired)
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000194 drm_agp_release(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196 dev->agp->acquired = 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000197 dev->agp->enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 }
Dave Airlie836cf042005-07-10 19:27:04 +1000199 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
200 drm_sg_cleanup(dev->sg);
201 dev->sg = NULL;
202 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000204 /* Clear vma list (only built for debugging) */
Dave Airliebd1b3312007-05-26 05:01:51 +1000205 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
206 list_del(&vma->head);
207 drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 }
209
Dave Airliebd1b3312007-05-26 05:01:51 +1000210 list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) {
211 drm_rmmap_locked(dev, r_list->map);
212 r_list = NULL;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000213 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000215 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
216 for (i = 0; i < dev->queue_count; i++) {
217 if (dev->queuelist[i]) {
218 drm_free(dev->queuelist[i],
219 sizeof(*dev->queuelist[0]),
220 DRM_MEM_QUEUES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 dev->queuelist[i] = NULL;
222 }
223 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000224 drm_free(dev->queuelist,
225 dev->queue_slots * sizeof(*dev->queuelist),
226 DRM_MEM_QUEUES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 dev->queuelist = NULL;
228 }
229 dev->queue_count = 0;
230
231 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000232 drm_dma_takedown(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000234 if (dev->lock.hw_lock) {
235 dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 dev->lock.filp = NULL;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000237 wake_up_interruptible(&dev->lock.lock_queue);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 }
Dave Airlie30e2fb12006-02-02 19:37:46 +1100239 mutex_unlock(&dev->struct_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
Dave Airlie22eae942005-11-10 22:16:34 +1100241 DRM_DEBUG("lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 return 0;
243}
244
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245/**
246 * Module initialization. Called via init_module at module load time, or via
247 * linux/init/main.c (this is not currently supported).
248 *
249 * \return zero on success or a negative number on failure.
250 *
251 * Initializes an array of drm_device structures, and attempts to
252 * initialize all available devices, using consecutive minors, registering the
253 * stubs and initializing the AGP device.
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000254 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
256 * after the initialization for driver customization.
257 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000258int drm_init(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259{
260 struct pci_dev *pdev = NULL;
261 struct pci_device_id *pid;
262 int i;
263
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000264 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
266 drm_mem_init();
267
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000268 for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000270
271 pdev = NULL;
272 /* pass back in pdev to account for multiple identical cards */
273 while ((pdev =
274 pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
275 pid->subdevice, pdev)) != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 /* stealth mode requires a manual probe */
277 pci_dev_get(pdev);
278 drm_get_dev(pdev, pid, driver);
279 }
280 }
281 return 0;
282}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284EXPORT_SYMBOL(drm_init);
285
286/**
287 * Called via cleanup_module() at module unload time.
288 *
Dave Airlie22eae942005-11-10 22:16:34 +1100289 * Cleans up all DRM device, calling drm_lastclose().
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000290 *
Dave Airlieaff138a2005-07-10 16:58:40 +1000291 * \sa drm_init
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000293static void drm_cleanup(struct drm_device * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294{
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000295 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
297 if (!dev) {
298 DRM_ERROR("cleanup called no dev\n");
299 return;
300 }
301
Dave Airlie22eae942005-11-10 22:16:34 +1100302 drm_lastclose(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
Dave Airliebd1b3312007-05-26 05:01:51 +1000304 drm_ht_remove(&dev->map_hash);
Dave Airlie836cf042005-07-10 19:27:04 +1000305
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000306 drm_ctxbitmap_cleanup(dev);
307
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
309 dev->agp && dev->agp->agp_mtrr >= 0) {
310 int retval;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000311 retval = mtrr_del(dev->agp->agp_mtrr,
312 dev->agp->agp_info.aper_base,
313 dev->agp->agp_info.aper_size * 1024 * 1024);
314 DRM_DEBUG("mtrr_del=%d\n", retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000316
317 if (drm_core_has_AGP(dev) && dev->agp) {
318 drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 dev->agp = NULL;
320 }
321
Dave Airlie22eae942005-11-10 22:16:34 +1100322 if (dev->driver->unload)
323 dev->driver->unload(dev);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000324
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 drm_put_head(&dev->primary);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000326 if (drm_put_dev(dev))
327 DRM_ERROR("Cannot unload module\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328}
329
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000330void drm_exit(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331{
332 int i;
Dave Airlie84b1fd12007-07-11 15:53:27 +1000333 struct drm_device *dev = NULL;
334 struct drm_head *head;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000335
336 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
338 for (i = 0; i < drm_cards_limit; i++) {
339 head = drm_heads[i];
340 if (!head)
341 continue;
342 if (!head->dev)
343 continue;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000344 if (head->dev->driver != driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 continue;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000346 dev = head->dev;
Dave Airlieaab8df12006-01-11 22:32:51 +1100347 if (dev) {
348 /* release the pci driver */
349 if (dev->pdev)
350 pci_dev_put(dev->pdev);
351 drm_cleanup(dev);
352 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000354 DRM_INFO("Module unloaded\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000356
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357EXPORT_SYMBOL(drm_exit);
358
359/** File operations structure */
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800360static const struct file_operations drm_stub_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 .owner = THIS_MODULE,
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000362 .open = drm_stub_open
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363};
364
365static int __init drm_core_init(void)
366{
367 int ret = -ENOMEM;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000368
369 drm_cards_limit =
370 (drm_cards_limit <
371 DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1);
372 drm_heads =
373 drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB);
374 if (!drm_heads)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
378 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000379
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
381 if (IS_ERR(drm_class)) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000382 printk(KERN_ERR "DRM: Error creating drm class.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 ret = PTR_ERR(drm_class);
384 goto err_p2;
385 }
386
Al Viro66600222005-09-28 22:32:57 +0100387 drm_proc_root = proc_mkdir("dri", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 if (!drm_proc_root) {
389 DRM_ERROR("Cannot create /proc/dri\n");
390 ret = -1;
391 goto err_p3;
392 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000393
394 DRM_INFO("Initialized %s %d.%d.%d %s\n",
395 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 return 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000397 err_p3:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 drm_sysfs_destroy(drm_class);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000399 err_p2:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 unregister_chrdev(DRM_MAJOR, "drm");
401 drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000402 err_p1:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 return ret;
404}
405
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000406static void __exit drm_core_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407{
408 remove_proc_entry("dri", NULL);
409 drm_sysfs_destroy(drm_class);
410
411 unregister_chrdev(DRM_MAJOR, "drm");
412
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000413 drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414}
415
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000416module_init(drm_core_init);
417module_exit(drm_core_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
419/**
420 * Get version information
421 *
422 * \param inode device inode.
423 * \param filp file pointer.
424 * \param cmd command.
425 * \param arg user argument, pointing to a drm_version structure.
426 * \return zero on success or negative number on failure.
427 *
428 * Fills in the version information in \p arg.
429 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000430static int drm_version(struct inode *inode, struct file *filp,
431 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432{
Dave Airlie84b1fd12007-07-11 15:53:27 +1000433 struct drm_file *priv = filp->private_data;
434 struct drm_device *dev = priv->head->dev;
Dave Airliec60ce622007-07-11 15:27:12 +1000435 struct drm_version __user *argp = (void __user *)arg;
436 struct drm_version version;
Dave Airlie22eae942005-11-10 22:16:34 +1100437 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000439 if (copy_from_user(&version, argp, sizeof(version)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 return -EFAULT;
441
Dave Airlie22eae942005-11-10 22:16:34 +1100442 version.version_major = dev->driver->major;
443 version.version_minor = dev->driver->minor;
444 version.version_patchlevel = dev->driver->patchlevel;
445 DRM_COPY(version.name, dev->driver->name);
446 DRM_COPY(version.date, dev->driver->date);
447 DRM_COPY(version.desc, dev->driver->desc);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000448
449 if (copy_to_user(argp, &version, sizeof(version)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 return -EFAULT;
451 return 0;
452}
453
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000454/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 * Called whenever a process performs an ioctl on /dev/drm.
456 *
457 * \param inode device inode.
458 * \param filp file pointer.
459 * \param cmd command.
460 * \param arg user argument.
461 * \return zero on success or negative number on failure.
462 *
463 * Looks up the ioctl function in the ::ioctls table, checking for root
464 * previleges if so required, and dispatches to the respective function.
465 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000466int drm_ioctl(struct inode *inode, struct file *filp,
467 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468{
Dave Airlie84b1fd12007-07-11 15:53:27 +1000469 struct drm_file *priv = filp->private_data;
470 struct drm_device *dev = priv->head->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 drm_ioctl_desc_t *ioctl;
472 drm_ioctl_t *func;
473 unsigned int nr = DRM_IOCTL_NR(cmd);
474 int retcode = -EINVAL;
475
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000476 atomic_inc(&dev->ioctl_count);
477 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 ++priv->ioctl_count;
479
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000480 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
481 current->pid, cmd, nr,
482 (long)old_encode_dev(priv->head->device),
483 priv->authenticated);
484
Dave Airlie0515b932007-05-08 15:28:15 +1000485 if ((nr >= DRM_CORE_IOCTL_COUNT) &&
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100486 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
487 goto err_i1;
Dave Airlie0515b932007-05-08 15:28:15 +1000488 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
489 (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
Thomas Hellstrom99da6d82007-03-19 08:52:17 +1100491 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE))
492 ioctl = &drm_ioctls[nr];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 else
494 goto err_i1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000495
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 func = ioctl->func;
497 /* is there a local override? */
498 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
499 func = dev->driver->dma_ioctl;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000500
501 if (!func) {
502 DRM_DEBUG("no function\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 retcode = -EINVAL;
Dave Airliea7a2cc32006-01-02 13:54:04 +1100504 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
505 ((ioctl->flags & DRM_AUTH) && !priv->authenticated) ||
506 ((ioctl->flags & DRM_MASTER) && !priv->master)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 retcode = -EACCES;
508 } else {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000509 retcode = func(inode, filp, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000511
512 err_i1:
513 atomic_dec(&dev->ioctl_count);
514 if (retcode)
515 DRM_DEBUG("ret = %x\n", retcode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 return retcode;
517}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000519EXPORT_SYMBOL(drm_ioctl);
Dave Airlieda509d72007-05-26 05:04:51 +1000520
521drm_local_map_t *drm_getsarea(struct drm_device *dev)
522{
523 drm_map_list_t *entry;
524
Dave Airlie6f710102007-05-28 19:41:35 +1000525 list_for_each_entry(entry, &dev->maplist, head) {
Dave Airlieda509d72007-05-26 05:04:51 +1000526 if (entry->map && entry->map->type == _DRM_SHM &&
527 (entry->map->flags & _DRM_CONTAINS_LOCK)) {
528 return entry->map;
529 }
530 }
531 return NULL;
532}
533EXPORT_SYMBOL(drm_getsarea);