blob: d8ff84bdc3e770e38448d027972fd0ac62188285 [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 *
18 * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls )
19 *
20 * #define drm_x mga_##x
21 * \endcode
22 */
23
24/*
25 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
26 *
27 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
28 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
29 * All Rights Reserved.
30 *
31 * Permission is hereby granted, free of charge, to any person obtaining a
32 * copy of this software and associated documentation files (the "Software"),
33 * to deal in the Software without restriction, including without limitation
34 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
35 * and/or sell copies of the Software, and to permit persons to whom the
36 * Software is furnished to do so, subject to the following conditions:
37 *
38 * The above copyright notice and this permission notice (including the next
39 * paragraph) shall be included in all copies or substantial portions of the
40 * Software.
41 *
42 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
43 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
45 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
46 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
47 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
48 * OTHER DEALINGS IN THE SOFTWARE.
49 */
50
51#include "drmP.h"
52#include "drm_core.h"
53
Dave Airliec94f7022005-07-07 21:03:38 +100054static int drm_version(struct inode *inode, struct file *filp,
55 unsigned int cmd, unsigned long arg);
56
Linus Torvalds1da177e2005-04-16 15:20:36 -070057/** Ioctl table */
Dave Airlieb5e89ed2005-09-25 14:28:13 +100058static drm_ioctl_desc_t drm_ioctls[] = {
59 [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0, 0},
60 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0, 0},
61 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0, 0},
62 [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, 0, 1},
63 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0, 0},
64 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0, 0},
65 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0, 0},
66 [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, 0, 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
Dave Airlieb5e89ed2005-09-25 14:28:13 +100068 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, 1, 1},
69 [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, 1, 1},
70 [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, 1, 1},
71 [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, 1, 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Dave Airlieb5e89ed2005-09-25 14:28:13 +100073 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, 1, 1},
74 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, 1, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
Dave Airlieb5e89ed2005-09-25 14:28:13 +100076 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, 1, 1},
77 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, 1, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Dave Airlieb5e89ed2005-09-25 14:28:13 +100079 [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, 1, 1},
80 [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, 1, 1},
81 [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, 1, 1},
82 [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, 1, 0},
83 [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, 1, 1},
84 [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, 1, 1},
85 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, 1, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Dave Airlieb5e89ed2005-09-25 14:28:13 +100087 [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, 1, 1},
88 [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, 1, 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Dave Airlieb5e89ed2005-09-25 14:28:13 +100090 [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, 1, 0},
91 [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, 1, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
Dave Airlieb5e89ed2005-09-25 14:28:13 +100093 [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, 1, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
Dave Airlieb5e89ed2005-09-25 14:28:13 +100095 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs, 1, 1},
96 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, 1, 1},
97 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, 1, 0},
98 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, 1, 0},
99 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, 1, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
101
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000102 [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, 1, 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104#if __OS_HAS_AGP
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000105 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, 1, 1},
106 [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, 1, 1},
107 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, 1, 1},
108 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, 1, 0},
109 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc, 1, 1},
110 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free, 1, 1},
111 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind, 1, 1},
112 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind, 1, 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113#endif
114
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000115 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, 1, 1},
116 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, 1, 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000118 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0, 0},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119};
120
121#define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( drm_ioctls )
122
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 Airlie22eae942005-11-10 22:16:34 +1100132int drm_lastclose(drm_device_t * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133{
134 drm_magic_entry_t *pt, *next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 drm_map_list_t *r_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 drm_vma_entry_t *vma, *vma_next;
137 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
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000154 down(&dev->struct_sem);
155 del_timer(&dev->timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000157 /* Clear pid list */
158 for (i = 0; i < DRM_HASH_SIZE; i++) {
159 for (pt = dev->magiclist[i].head; pt; pt = next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 next = pt->next;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000161 drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 }
163 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
164 }
165
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000166 /* Clear AGP information */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 if (drm_core_has_AGP(dev) && dev->agp) {
168 drm_agp_mem_t *entry;
169 drm_agp_mem_t *nexte;
170
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000171 /* Remove AGP resources, but leave dev->agp
172 intact until drv_cleanup is called. */
173 for (entry = dev->agp->memory; entry; entry = nexte) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 nexte = entry->next;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000175 if (entry->bound)
176 drm_unbind_agp(entry->memory);
177 drm_free_agp(entry->memory, entry->pages);
178 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 }
180 dev->agp->memory = NULL;
181
Dave Airlie7ab98402005-07-10 16:56:52 +1000182 if (dev->agp->acquired)
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000183 drm_agp_release(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
185 dev->agp->acquired = 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000186 dev->agp->enabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 }
Dave Airlie836cf042005-07-10 19:27:04 +1000188 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
189 drm_sg_cleanup(dev->sg);
190 dev->sg = NULL;
191 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000193 /* Clear vma list (only built for debugging) */
194 if (dev->vmalist) {
195 for (vma = dev->vmalist; vma; vma = vma_next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 vma_next = vma->next;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000197 drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 }
199 dev->vmalist = NULL;
200 }
201
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000202 if (dev->maplist) {
Dave Airlie836cf042005-07-10 19:27:04 +1000203 while (!list_empty(&dev->maplist->head)) {
204 struct list_head *list = dev->maplist->head.next;
205 r_list = list_entry(list, drm_map_list_t, head);
206 drm_rmmap_locked(dev, r_list->map);
207 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000208 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000210 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
211 for (i = 0; i < dev->queue_count; i++) {
212 if (dev->queuelist[i]) {
213 drm_free(dev->queuelist[i],
214 sizeof(*dev->queuelist[0]),
215 DRM_MEM_QUEUES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 dev->queuelist[i] = NULL;
217 }
218 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000219 drm_free(dev->queuelist,
220 dev->queue_slots * sizeof(*dev->queuelist),
221 DRM_MEM_QUEUES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 dev->queuelist = NULL;
223 }
224 dev->queue_count = 0;
225
226 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000227 drm_dma_takedown(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000229 if (dev->lock.hw_lock) {
230 dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 dev->lock.filp = NULL;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000232 wake_up_interruptible(&dev->lock.lock_queue);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000234 up(&dev->struct_sem);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Dave Airlie22eae942005-11-10 22:16:34 +1100236 DRM_DEBUG("lastclose completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 return 0;
238}
239
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240/**
241 * Module initialization. Called via init_module at module load time, or via
242 * linux/init/main.c (this is not currently supported).
243 *
244 * \return zero on success or a negative number on failure.
245 *
246 * Initializes an array of drm_device structures, and attempts to
247 * initialize all available devices, using consecutive minors, registering the
248 * stubs and initializing the AGP device.
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000249 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
251 * after the initialization for driver customization.
252 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000253int drm_init(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254{
255 struct pci_dev *pdev = NULL;
256 struct pci_device_id *pid;
257 int i;
258
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000259 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260
261 drm_mem_init();
262
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000263 for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000265
266 pdev = NULL;
267 /* pass back in pdev to account for multiple identical cards */
268 while ((pdev =
269 pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
270 pid->subdevice, pdev)) != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 /* stealth mode requires a manual probe */
272 pci_dev_get(pdev);
273 drm_get_dev(pdev, pid, driver);
274 }
275 }
276 return 0;
277}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279EXPORT_SYMBOL(drm_init);
280
281/**
282 * Called via cleanup_module() at module unload time.
283 *
Dave Airlie22eae942005-11-10 22:16:34 +1100284 * Cleans up all DRM device, calling drm_lastclose().
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000285 *
Dave Airlieaff138a2005-07-10 16:58:40 +1000286 * \sa drm_init
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000288static void drm_cleanup(drm_device_t * dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289{
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000290 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
292 if (!dev) {
293 DRM_ERROR("cleanup called no dev\n");
294 return;
295 }
296
Dave Airlie22eae942005-11-10 22:16:34 +1100297 drm_lastclose(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
Dave Airlie836cf042005-07-10 19:27:04 +1000299 if (dev->maplist) {
300 drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
301 dev->maplist = NULL;
302 }
303
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000304 drm_ctxbitmap_cleanup(dev);
305
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
307 dev->agp && dev->agp->agp_mtrr >= 0) {
308 int retval;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000309 retval = mtrr_del(dev->agp->agp_mtrr,
310 dev->agp->agp_info.aper_base,
311 dev->agp->agp_info.aper_size * 1024 * 1024);
312 DRM_DEBUG("mtrr_del=%d\n", retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000314
315 if (drm_core_has_AGP(dev) && dev->agp) {
316 drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 dev->agp = NULL;
318 }
319
Dave Airlie22eae942005-11-10 22:16:34 +1100320 if (dev->driver->unload)
321 dev->driver->unload(dev);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000322
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 drm_put_head(&dev->primary);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000324 if (drm_put_dev(dev))
325 DRM_ERROR("Cannot unload module\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326}
327
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000328void drm_exit(struct drm_driver *driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329{
330 int i;
331 drm_device_t *dev = NULL;
332 drm_head_t *head;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000333
334 DRM_DEBUG("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
336 for (i = 0; i < drm_cards_limit; i++) {
337 head = drm_heads[i];
338 if (!head)
339 continue;
340 if (!head->dev)
341 continue;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000342 if (head->dev->driver != driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 continue;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000344 dev = head->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 }
346 if (dev) {
347 /* release the pci driver */
348 if (dev->pdev)
349 pci_dev_put(dev->pdev);
350 drm_cleanup(dev);
351 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000352 DRM_INFO("Module unloaded\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353}
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000354
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355EXPORT_SYMBOL(drm_exit);
356
357/** File operations structure */
358static struct file_operations drm_stub_fops = {
359 .owner = THIS_MODULE,
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000360 .open = drm_stub_open
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361};
362
363static int __init drm_core_init(void)
364{
365 int ret = -ENOMEM;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000366
367 drm_cards_limit =
368 (drm_cards_limit <
369 DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1);
370 drm_heads =
371 drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB);
372 if (!drm_heads)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000374
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
376 goto err_p1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
379 if (IS_ERR(drm_class)) {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000380 printk(KERN_ERR "DRM: Error creating drm class.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 ret = PTR_ERR(drm_class);
382 goto err_p2;
383 }
384
Al Viro66600222005-09-28 22:32:57 +0100385 drm_proc_root = proc_mkdir("dri", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 if (!drm_proc_root) {
387 DRM_ERROR("Cannot create /proc/dri\n");
388 ret = -1;
389 goto err_p3;
390 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000391
392 DRM_INFO("Initialized %s %d.%d.%d %s\n",
393 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 return 0;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000395 err_p3:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 drm_sysfs_destroy(drm_class);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000397 err_p2:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 unregister_chrdev(DRM_MAJOR, "drm");
399 drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000400 err_p1:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 return ret;
402}
403
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000404static void __exit drm_core_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405{
406 remove_proc_entry("dri", NULL);
407 drm_sysfs_destroy(drm_class);
408
409 unregister_chrdev(DRM_MAJOR, "drm");
410
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000411 drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412}
413
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000414module_init(drm_core_init);
415module_exit(drm_core_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
417/**
418 * Get version information
419 *
420 * \param inode device inode.
421 * \param filp file pointer.
422 * \param cmd command.
423 * \param arg user argument, pointing to a drm_version structure.
424 * \return zero on success or negative number on failure.
425 *
426 * Fills in the version information in \p arg.
427 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000428static int drm_version(struct inode *inode, struct file *filp,
429 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
431 drm_file_t *priv = filp->private_data;
432 drm_device_t *dev = priv->head->dev;
433 drm_version_t __user *argp = (void __user *)arg;
434 drm_version_t version;
Dave Airlie22eae942005-11-10 22:16:34 +1100435 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000437 if (copy_from_user(&version, argp, sizeof(version)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 return -EFAULT;
439
Dave Airlie22eae942005-11-10 22:16:34 +1100440 version.version_major = dev->driver->major;
441 version.version_minor = dev->driver->minor;
442 version.version_patchlevel = dev->driver->patchlevel;
443 DRM_COPY(version.name, dev->driver->name);
444 DRM_COPY(version.date, dev->driver->date);
445 DRM_COPY(version.desc, dev->driver->desc);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000446
447 if (copy_to_user(argp, &version, sizeof(version)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 return -EFAULT;
449 return 0;
450}
451
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000452/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 * Called whenever a process performs an ioctl on /dev/drm.
454 *
455 * \param inode device inode.
456 * \param filp file pointer.
457 * \param cmd command.
458 * \param arg user argument.
459 * \return zero on success or negative number on failure.
460 *
461 * Looks up the ioctl function in the ::ioctls table, checking for root
462 * previleges if so required, and dispatches to the respective function.
463 */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000464int drm_ioctl(struct inode *inode, struct file *filp,
465 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466{
467 drm_file_t *priv = filp->private_data;
468 drm_device_t *dev = priv->head->dev;
469 drm_ioctl_desc_t *ioctl;
470 drm_ioctl_t *func;
471 unsigned int nr = DRM_IOCTL_NR(cmd);
472 int retcode = -EINVAL;
473
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000474 atomic_inc(&dev->ioctl_count);
475 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 ++priv->ioctl_count;
477
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000478 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
479 current->pid, cmd, nr,
480 (long)old_encode_dev(priv->head->device),
481 priv->authenticated);
482
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 if (nr < DRIVER_IOCTL_COUNT)
484 ioctl = &drm_ioctls[nr];
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000485 else if ((nr >= DRM_COMMAND_BASE)
486 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
488 else
489 goto err_i1;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000490
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 func = ioctl->func;
492 /* is there a local override? */
493 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
494 func = dev->driver->dma_ioctl;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000495
496 if (!func) {
497 DRM_DEBUG("no function\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 retcode = -EINVAL;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000499 } else if ((ioctl->root_only && !capable(CAP_SYS_ADMIN)) ||
500 (ioctl->auth_needed && !priv->authenticated)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 retcode = -EACCES;
502 } else {
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000503 retcode = func(inode, filp, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 }
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000505
506 err_i1:
507 atomic_dec(&dev->ioctl_count);
508 if (retcode)
509 DRM_DEBUG("ret = %x\n", retcode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 return retcode;
511}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000513EXPORT_SYMBOL(drm_ioctl);