1 /*-
2 * Copyright 2003 Eric Anholt
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #include <sys/cdefs.h>
25 /** @file drm_sysctl.c
26 * Implementation of various sysctls for controlling DRM behavior and reporting
27 * debug information.
28 */
29
30 #include <dev/drm2/drmP.h>
31 #include <dev/drm2/drm.h>
32
33 #include <sys/sysctl.h>
34
35 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS;
36 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
37 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
38 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
39 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
40
41 struct drm_sysctl_list {
42 const char *name;
43 int (*f) DRM_SYSCTL_HANDLER_ARGS;
44 } drm_sysctl_list[] = {
45 {"name", drm_name_info},
46 {"vm", drm_vm_info},
47 {"clients", drm_clients_info},
48 {"bufs", drm_bufs_info},
49 {"vblank", drm_vblank_info},
50 };
51 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
52
53 struct drm_sysctl_info {
54 struct sysctl_ctx_list ctx;
55 char name[2];
56 };
57
drm_sysctl_init(struct drm_device * dev)58 int drm_sysctl_init(struct drm_device *dev)
59 {
60 struct drm_sysctl_info *info;
61 struct sysctl_oid *oid;
62 struct sysctl_oid *top, *drioid;
63 int i;
64
65 info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
66 dev->sysctl = info;
67
68 /* Add the sysctl node for DRI if it doesn't already exist */
69 drioid = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(&sysctl___hw), OID_AUTO,
70 "dri", CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, "DRI Graphics");
71 if (!drioid) {
72 free(dev->sysctl, DRM_MEM_DRIVER);
73 dev->sysctl = NULL;
74 return (-ENOMEM);
75 }
76
77 /* Find the next free slot under hw.dri */
78 i = 0;
79 SYSCTL_FOREACH(oid, SYSCTL_CHILDREN(drioid)) {
80 if (i <= oid->oid_arg2)
81 i = oid->oid_arg2 + 1;
82 }
83 if (i > 9) {
84 drm_sysctl_cleanup(dev);
85 return (-ENOSPC);
86 }
87
88 dev->sysctl_node_idx = i;
89 /* Add the hw.dri.x for our device */
90 info->name[0] = '0' + i;
91 info->name[1] = 0;
92 top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid),
93 OID_AUTO, info->name, CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, NULL);
94 if (!top) {
95 drm_sysctl_cleanup(dev);
96 return (-ENOMEM);
97 }
98
99 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
100 oid = SYSCTL_ADD_OID(&info->ctx, SYSCTL_CHILDREN(top),
101 OID_AUTO, drm_sysctl_list[i].name,
102 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
103 dev, 0, drm_sysctl_list[i].f, "A", NULL);
104 if (!oid) {
105 drm_sysctl_cleanup(dev);
106 return (-ENOMEM);
107 }
108 }
109 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
110 CTLFLAG_RW, &drm_debug, sizeof(drm_debug),
111 "Enable debugging output");
112 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
113 CTLFLAG_RW, &drm_notyet, sizeof(drm_debug),
114 "Enable notyet reminders");
115
116 if (dev->driver->sysctl_init != NULL)
117 dev->driver->sysctl_init(dev, &info->ctx, top);
118
119 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
120 "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay,
121 sizeof(drm_vblank_offdelay),
122 "");
123 SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
124 "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision,
125 sizeof(drm_timestamp_precision),
126 "");
127
128 return (0);
129 }
130
drm_sysctl_cleanup(struct drm_device * dev)131 int drm_sysctl_cleanup(struct drm_device *dev)
132 {
133 int error;
134
135 if (dev->sysctl == NULL)
136 return (0);
137
138 error = sysctl_ctx_free(&dev->sysctl->ctx);
139 free(dev->sysctl, DRM_MEM_DRIVER);
140 dev->sysctl = NULL;
141 if (dev->driver->sysctl_cleanup != NULL)
142 dev->driver->sysctl_cleanup(dev);
143
144 return (-error);
145 }
146
147 #define DRM_SYSCTL_PRINT(fmt, arg...) \
148 do { \
149 snprintf(buf, sizeof(buf), fmt, ##arg); \
150 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \
151 if (retcode) \
152 goto done; \
153 } while (0)
154
155 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
156 {
157 struct drm_device *dev = arg1;
158 struct drm_minor *minor;
159 struct drm_master *master;
160 char buf[128];
161 int retcode;
162 int hasunique = 0;
163
164 /* FIXME: This still uses primary minor. */
165 minor = dev->primary;
166 DRM_SYSCTL_PRINT("%s 0x%jx", dev->driver->name,
167 (uintmax_t)dev2udev(minor->device));
168
169 DRM_LOCK(dev);
170 master = minor->master;
171 if (master != NULL && master->unique) {
172 snprintf(buf, sizeof(buf), " %s", master->unique);
173 hasunique = 1;
174 }
175 DRM_UNLOCK(dev);
176
177 if (hasunique)
178 SYSCTL_OUT(req, buf, strlen(buf));
179
180 SYSCTL_OUT(req, "", 1);
181
182 done:
183 return retcode;
184 }
185
186 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
187 {
188 struct drm_device *dev = arg1;
189 struct drm_map_list *entry;
190 struct drm_local_map *map, *tempmaps;
191 const char *types[] = {
192 [_DRM_FRAME_BUFFER] = "FB",
193 [_DRM_REGISTERS] = "REG",
194 [_DRM_SHM] = "SHM",
195 [_DRM_AGP] = "AGP",
196 [_DRM_SCATTER_GATHER] = "SG",
197 [_DRM_CONSISTENT] = "CONS",
198 [_DRM_GEM] = "GEM"
199 };
200 const char *type, *yesno;
201 int i, mapcount;
202 char buf[128];
203 int retcode;
204
205 /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
206 * temporary copy of all the map entries and then SYSCTL_OUT that.
207 */
208 DRM_LOCK(dev);
209
210 mapcount = 0;
211 list_for_each_entry(entry, &dev->maplist, head) {
212 if (entry->map != NULL)
213 mapcount++;
214 }
215
216 tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER,
217 M_NOWAIT);
218 if (tempmaps == NULL) {
219 DRM_UNLOCK(dev);
220 return ENOMEM;
221 }
222
223 i = 0;
224 list_for_each_entry(entry, &dev->maplist, head) {
225 if (entry->map != NULL)
226 tempmaps[i++] = *entry->map;
227 }
228
229 DRM_UNLOCK(dev);
230
231 DRM_SYSCTL_PRINT("\nslot offset size "
232 "type flags address mtrr\n");
233
234 for (i = 0; i < mapcount; i++) {
235 map = &tempmaps[i];
236
237 switch(map->type) {
238 default:
239 type = "??";
240 break;
241 case _DRM_FRAME_BUFFER:
242 case _DRM_REGISTERS:
243 case _DRM_SHM:
244 case _DRM_AGP:
245 case _DRM_SCATTER_GATHER:
246 case _DRM_CONSISTENT:
247 case _DRM_GEM:
248 type = types[map->type];
249 break;
250 }
251
252 if (map->mtrr < 0)
253 yesno = "no";
254 else
255 yesno = "yes";
256
257 DRM_SYSCTL_PRINT(
258 "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%016lx %s\n",
259 i, (unsigned long long)map->offset, map->size, type,
260 map->flags, (unsigned long)map->handle, yesno);
261 }
262 SYSCTL_OUT(req, "", 1);
263
264 done:
265 free(tempmaps, DRM_MEM_DRIVER);
266 return retcode;
267 }
268
269 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
270 {
271 struct drm_device *dev = arg1;
272 struct drm_device_dma *dma = dev->dma;
273 struct drm_device_dma tempdma;
274 int *templists;
275 int i;
276 char buf[128];
277 int retcode;
278
279 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
280 * copy of the whole structure and the relevant data from buflist.
281 */
282 DRM_LOCK(dev);
283 if (dma == NULL) {
284 DRM_UNLOCK(dev);
285 return 0;
286 }
287 DRM_SPINLOCK(&dev->dma_lock);
288 tempdma = *dma;
289 templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
290 M_NOWAIT);
291 for (i = 0; i < dma->buf_count; i++)
292 templists[i] = dma->buflist[i]->list;
293 dma = &tempdma;
294 DRM_SPINUNLOCK(&dev->dma_lock);
295 DRM_UNLOCK(dev);
296
297 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n");
298 for (i = 0; i <= DRM_MAX_ORDER; i++) {
299 if (dma->bufs[i].buf_count)
300 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
301 i,
302 dma->bufs[i].buf_size,
303 dma->bufs[i].buf_count,
304 atomic_read(&dma->bufs[i]
305 .freelist.count),
306 dma->bufs[i].seg_count,
307 dma->bufs[i].seg_count
308 *(1 << dma->bufs[i].page_order),
309 (dma->bufs[i].seg_count
310 * (1 << dma->bufs[i].page_order))
311 * (int)PAGE_SIZE / 1024);
312 }
313 DRM_SYSCTL_PRINT("\n");
314 for (i = 0; i < dma->buf_count; i++) {
315 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
316 DRM_SYSCTL_PRINT(" %d", templists[i]);
317 }
318 DRM_SYSCTL_PRINT("\n");
319
320 SYSCTL_OUT(req, "", 1);
321 done:
322 free(templists, DRM_MEM_DRIVER);
323 return retcode;
324 }
325
326 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
327 {
328 struct drm_device *dev = arg1;
329 struct drm_file *priv, *tempprivs;
330 char buf[128];
331 int retcode;
332 int privcount, i;
333
334 DRM_LOCK(dev);
335
336 privcount = 0;
337 list_for_each_entry(priv, &dev->filelist, lhead)
338 privcount++;
339
340 tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
341 M_NOWAIT);
342 if (tempprivs == NULL) {
343 DRM_UNLOCK(dev);
344 return ENOMEM;
345 }
346 i = 0;
347 list_for_each_entry(priv, &dev->filelist, lhead)
348 tempprivs[i++] = *priv;
349
350 DRM_UNLOCK(dev);
351
352 DRM_SYSCTL_PRINT(
353 "\na dev pid uid magic ioctls\n");
354 for (i = 0; i < privcount; i++) {
355 priv = &tempprivs[i];
356 DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
357 priv->authenticated ? 'y' : 'n',
358 devtoname(priv->minor->device),
359 priv->pid,
360 priv->uid,
361 priv->magic,
362 priv->ioctl_count);
363 }
364
365 SYSCTL_OUT(req, "", 1);
366 done:
367 free(tempprivs, DRM_MEM_DRIVER);
368 return retcode;
369 }
370
371 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
372 {
373 struct drm_device *dev = arg1;
374 char buf[128];
375 int retcode;
376 int i;
377
378 DRM_SYSCTL_PRINT("\ncrtc ref count last enabled inmodeset\n");
379 DRM_LOCK(dev);
380 if (dev->_vblank_count == NULL)
381 goto done;
382 for (i = 0 ; i < dev->num_crtcs ; i++) {
383 DRM_SYSCTL_PRINT(" %02d %02d %08d %08d %02d %02d\n",
384 i, dev->vblank_refcount[i],
385 dev->_vblank_count[i],
386 dev->last_vblank[i],
387 dev->vblank_enabled[i],
388 dev->vblank_inmodeset[i]);
389 }
390 done:
391 DRM_UNLOCK(dev);
392
393 SYSCTL_OUT(req, "", -1);
394 return retcode;
395 }
396