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__FBSDID("$FreeBSD$");
26
27/** @file drm_sysctl.c
28 * Implementation of various sysctls for controlling DRM behavior and reporting
29 * debug information.
30 */
31
32#include <dev/drm2/drmP.h>
33#include <dev/drm2/drm.h>
34
35#include <sys/sysctl.h>
36
37static int	   drm_name_info DRM_SYSCTL_HANDLER_ARGS;
38static int	   drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
39static int	   drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
40static int	   drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
41static int	   drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
42
43struct drm_sysctl_list {
44	const char *name;
45	int	   (*f) DRM_SYSCTL_HANDLER_ARGS;
46} drm_sysctl_list[] = {
47	{"name",    drm_name_info},
48	{"vm",	    drm_vm_info},
49	{"clients", drm_clients_info},
50	{"bufs",    drm_bufs_info},
51	{"vblank",    drm_vblank_info},
52};
53#define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
54
55struct drm_sysctl_info {
56	struct sysctl_ctx_list ctx;
57	char		       name[2];
58};
59
60int drm_sysctl_init(struct drm_device *dev)
61{
62	struct drm_sysctl_info *info;
63	struct sysctl_oid *oid;
64	struct sysctl_oid *top, *drioid;
65	int		  i;
66
67	info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
68	dev->sysctl = info;
69
70	/* Add the sysctl node for DRI if it doesn't already exist */
71	drioid = SYSCTL_ADD_NODE(&info->ctx, &sysctl__hw_children, OID_AUTO,
72	    "dri", CTLFLAG_RW, NULL, "DRI Graphics");
73	if (!drioid) {
74		free(dev->sysctl, DRM_MEM_DRIVER);
75		dev->sysctl = NULL;
76		return (-ENOMEM);
77	}
78
79	/* Find the next free slot under hw.dri */
80	i = 0;
81	SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
82		if (i <= oid->oid_arg2)
83			i = oid->oid_arg2 + 1;
84	}
85	if (i > 9) {
86		drm_sysctl_cleanup(dev);
87		return (-ENOSPC);
88	}
89
90	dev->sysctl_node_idx = i;
91	/* Add the hw.dri.x for our device */
92	info->name[0] = '0' + i;
93	info->name[1] = 0;
94	top = SYSCTL_ADD_NODE(&info->ctx, SYSCTL_CHILDREN(drioid),
95	    OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
96	if (!top) {
97		drm_sysctl_cleanup(dev);
98		return (-ENOMEM);
99	}
100
101	for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
102		oid = SYSCTL_ADD_OID(&info->ctx,
103			SYSCTL_CHILDREN(top),
104			OID_AUTO,
105			drm_sysctl_list[i].name,
106			CTLTYPE_STRING | CTLFLAG_RD,
107			dev,
108			0,
109			drm_sysctl_list[i].f,
110			"A",
111			NULL);
112		if (!oid) {
113			drm_sysctl_cleanup(dev);
114			return (-ENOMEM);
115		}
116	}
117	SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "debug",
118	    CTLFLAG_RW, &drm_debug, sizeof(drm_debug),
119	    "Enable debugging output");
120	SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, "notyet",
121	    CTLFLAG_RW, &drm_notyet, sizeof(drm_debug),
122	    "Enable notyet reminders");
123
124	if (dev->driver->sysctl_init != NULL)
125		dev->driver->sysctl_init(dev, &info->ctx, top);
126
127	SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
128	    "vblank_offdelay", CTLFLAG_RW, &drm_vblank_offdelay,
129	    sizeof(drm_vblank_offdelay),
130	    "");
131	SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO,
132	    "timestamp_precision", CTLFLAG_RW, &drm_timestamp_precision,
133	    sizeof(drm_timestamp_precision),
134	    "");
135
136	return (0);
137}
138
139int drm_sysctl_cleanup(struct drm_device *dev)
140{
141	int error;
142
143	if (dev->sysctl == NULL)
144		return (0);
145
146	error = sysctl_ctx_free(&dev->sysctl->ctx);
147	free(dev->sysctl, DRM_MEM_DRIVER);
148	dev->sysctl = NULL;
149	if (dev->driver->sysctl_cleanup != NULL)
150		dev->driver->sysctl_cleanup(dev);
151
152	return (-error);
153}
154
155#define DRM_SYSCTL_PRINT(fmt, arg...)				\
156do {								\
157	snprintf(buf, sizeof(buf), fmt, ##arg);			\
158	retcode = SYSCTL_OUT(req, buf, strlen(buf));		\
159	if (retcode)						\
160		goto done;					\
161} while (0)
162
163static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
164{
165	struct drm_device *dev = arg1;
166	struct drm_minor *minor;
167	struct drm_master *master;
168	char buf[128];
169	int retcode;
170	int hasunique = 0;
171
172	/* FIXME: This still uses primary minor. */
173	minor = dev->primary;
174	DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(minor->device));
175
176	DRM_LOCK(dev);
177	master = minor->master;
178	if (master != NULL && master->unique) {
179		snprintf(buf, sizeof(buf), " %s", master->unique);
180		hasunique = 1;
181	}
182	DRM_UNLOCK(dev);
183
184	if (hasunique)
185		SYSCTL_OUT(req, buf, strlen(buf));
186
187	SYSCTL_OUT(req, "", 1);
188
189done:
190	return retcode;
191}
192
193static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
194{
195	struct drm_device *dev = arg1;
196	struct drm_map_list *entry;
197	struct drm_local_map *map, *tempmaps;
198	const char *types[] = {
199		[_DRM_FRAME_BUFFER] = "FB",
200		[_DRM_REGISTERS] = "REG",
201		[_DRM_SHM] = "SHM",
202		[_DRM_AGP] = "AGP",
203		[_DRM_SCATTER_GATHER] = "SG",
204		[_DRM_CONSISTENT] = "CONS",
205		[_DRM_GEM] = "GEM"
206	};
207	const char *type, *yesno;
208	int i, mapcount;
209	char buf[128];
210	int retcode;
211
212	/* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
213	 * temporary copy of all the map entries and then SYSCTL_OUT that.
214	 */
215	DRM_LOCK(dev);
216
217	mapcount = 0;
218	list_for_each_entry(entry, &dev->maplist, head) {
219		if (entry->map != NULL)
220			mapcount++;
221	}
222
223	tempmaps = malloc(sizeof(*tempmaps) * mapcount, DRM_MEM_DRIVER,
224	    M_NOWAIT);
225	if (tempmaps == NULL) {
226		DRM_UNLOCK(dev);
227		return ENOMEM;
228	}
229
230	i = 0;
231	list_for_each_entry(entry, &dev->maplist, head) {
232		if (entry->map != NULL)
233			tempmaps[i++] = *entry->map;
234	}
235
236	DRM_UNLOCK(dev);
237
238	DRM_SYSCTL_PRINT("\nslot offset	        size       "
239	    "type flags address            mtrr\n");
240
241	for (i = 0; i < mapcount; i++) {
242		map = &tempmaps[i];
243
244		switch(map->type) {
245		default:
246			type = "??";
247			break;
248		case _DRM_FRAME_BUFFER:
249		case _DRM_REGISTERS:
250		case _DRM_SHM:
251		case _DRM_AGP:
252		case _DRM_SCATTER_GATHER:
253		case _DRM_CONSISTENT:
254		case _DRM_GEM:
255			type = types[map->type];
256			break;
257		}
258
259		if (map->mtrr < 0)
260			yesno = "no";
261		else
262			yesno = "yes";
263
264		DRM_SYSCTL_PRINT(
265		    "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%016lx %s\n",
266		    i, (unsigned long long)map->offset, map->size, type,
267		    map->flags, (unsigned long)map->handle, yesno);
268	}
269	SYSCTL_OUT(req, "", 1);
270
271done:
272	free(tempmaps, DRM_MEM_DRIVER);
273	return retcode;
274}
275
276static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
277{
278	struct drm_device	 *dev = arg1;
279	struct drm_device_dma *dma = dev->dma;
280	struct drm_device_dma tempdma;
281	int *templists;
282	int i;
283	char buf[128];
284	int retcode;
285
286	/* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
287	 * copy of the whole structure and the relevant data from buflist.
288	 */
289	DRM_LOCK(dev);
290	if (dma == NULL) {
291		DRM_UNLOCK(dev);
292		return 0;
293	}
294	DRM_SPINLOCK(&dev->dma_lock);
295	tempdma = *dma;
296	templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
297	    M_NOWAIT);
298	for (i = 0; i < dma->buf_count; i++)
299		templists[i] = dma->buflist[i]->list;
300	dma = &tempdma;
301	DRM_SPINUNLOCK(&dev->dma_lock);
302	DRM_UNLOCK(dev);
303
304	DRM_SYSCTL_PRINT("\n o     size count  free	 segs pages    kB\n");
305	for (i = 0; i <= DRM_MAX_ORDER; i++) {
306		if (dma->bufs[i].buf_count)
307			DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
308				       i,
309				       dma->bufs[i].buf_size,
310				       dma->bufs[i].buf_count,
311				       atomic_read(&dma->bufs[i]
312						   .freelist.count),
313				       dma->bufs[i].seg_count,
314				       dma->bufs[i].seg_count
315				       *(1 << dma->bufs[i].page_order),
316				       (dma->bufs[i].seg_count
317					* (1 << dma->bufs[i].page_order))
318				       * (int)PAGE_SIZE / 1024);
319	}
320	DRM_SYSCTL_PRINT("\n");
321	for (i = 0; i < dma->buf_count; i++) {
322		if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
323		DRM_SYSCTL_PRINT(" %d", templists[i]);
324	}
325	DRM_SYSCTL_PRINT("\n");
326
327	SYSCTL_OUT(req, "", 1);
328done:
329	free(templists, DRM_MEM_DRIVER);
330	return retcode;
331}
332
333static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
334{
335	struct drm_device *dev = arg1;
336	struct drm_file *priv, *tempprivs;
337	char buf[128];
338	int retcode;
339	int privcount, i;
340
341	DRM_LOCK(dev);
342
343	privcount = 0;
344	list_for_each_entry(priv, &dev->filelist, lhead)
345		privcount++;
346
347	tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
348	    M_NOWAIT);
349	if (tempprivs == NULL) {
350		DRM_UNLOCK(dev);
351		return ENOMEM;
352	}
353	i = 0;
354	list_for_each_entry(priv, &dev->filelist, lhead)
355		tempprivs[i++] = *priv;
356
357	DRM_UNLOCK(dev);
358
359	DRM_SYSCTL_PRINT(
360	    "\na dev            pid   uid      magic     ioctls\n");
361	for (i = 0; i < privcount; i++) {
362		priv = &tempprivs[i];
363		DRM_SYSCTL_PRINT("%c %-12s %5d %5d %10u %10lu\n",
364			       priv->authenticated ? 'y' : 'n',
365			       devtoname(priv->minor->device),
366			       priv->pid,
367			       priv->uid,
368			       priv->magic,
369			       priv->ioctl_count);
370	}
371
372	SYSCTL_OUT(req, "", 1);
373done:
374	free(tempprivs, DRM_MEM_DRIVER);
375	return retcode;
376}
377
378static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
379{
380	struct drm_device *dev = arg1;
381	char buf[128];
382	int retcode;
383	int i;
384
385	DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
386	DRM_LOCK(dev);
387	if (dev->_vblank_count == NULL)
388		goto done;
389	for (i = 0 ; i < dev->num_crtcs ; i++) {
390		DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
391		    i, dev->vblank_refcount[i],
392		    dev->_vblank_count[i],
393		    dev->last_vblank[i],
394		    dev->vblank_enabled[i],
395		    dev->vblank_inmodeset[i]);
396	}
397done:
398	DRM_UNLOCK(dev);
399
400	SYSCTL_OUT(req, "", -1);
401	return retcode;
402}
403