1/*-
2 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 *    Rickard E. (Rik) Faith <faith@valinux.com>
27 *    Gareth Hughes <gareth@valinux.com>
28 *
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34/** @file drm_ioctl.c
35 * Varios minor DRM ioctls not applicable to other files, such as versioning
36 * information and reporting DRM information to userland.
37 */
38
39#include <dev/drm2/drmP.h>
40#include <dev/drm2/drm_core.h>
41
42/*
43 * Beginning in revision 1.1 of the DRM interface, getunique will return
44 * a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function)
45 * before setunique has been called.  The format for the bus-specific part of
46 * the unique is not defined for any other bus.
47 */
48int drm_getunique(struct drm_device *dev, void *data,
49		  struct drm_file *file_priv)
50{
51	struct drm_unique *u = data;
52
53	if (u->unique_len >= dev->unique_len) {
54		if (DRM_COPY_TO_USER(u->unique, dev->unique, dev->unique_len))
55			return EFAULT;
56	}
57	u->unique_len = dev->unique_len;
58
59	return 0;
60}
61
62/* Deprecated in DRM version 1.1, and will return EBUSY when setversion has
63 * requested version 1.1 or greater.
64 */
65int drm_setunique(struct drm_device *dev, void *data,
66		  struct drm_file *file_priv)
67{
68	struct drm_unique *u = data;
69	int domain, bus, slot, func, ret;
70	char *busid;
71
72	/* Check and copy in the submitted Bus ID */
73	if (!u->unique_len || u->unique_len > 1024)
74		return EINVAL;
75
76	busid = malloc(u->unique_len + 1, DRM_MEM_DRIVER, M_WAITOK);
77	if (busid == NULL)
78		return ENOMEM;
79
80	if (DRM_COPY_FROM_USER(busid, u->unique, u->unique_len)) {
81		free(busid, DRM_MEM_DRIVER);
82		return EFAULT;
83	}
84	busid[u->unique_len] = '\0';
85
86	/* Return error if the busid submitted doesn't match the device's actual
87	 * busid.
88	 */
89	ret = sscanf(busid, "PCI:%d:%d:%d", &bus, &slot, &func);
90	if (ret != 3) {
91		free(busid, DRM_MEM_DRIVER);
92		return EINVAL;
93	}
94	domain = bus >> 8;
95	bus &= 0xff;
96
97	if ((domain != dev->pci_domain) ||
98	    (bus != dev->pci_bus) ||
99	    (slot != dev->pci_slot) ||
100	    (func != dev->pci_func)) {
101		free(busid, DRM_MEM_DRIVER);
102		return EINVAL;
103	}
104
105	/* Actually set the device's busid now. */
106	DRM_LOCK(dev);
107	if (dev->unique_len || dev->unique) {
108		DRM_UNLOCK(dev);
109		return EBUSY;
110	}
111
112	dev->unique_len = u->unique_len;
113	dev->unique = busid;
114	DRM_UNLOCK(dev);
115
116	return 0;
117}
118
119
120static int
121drm_set_busid(struct drm_device *dev)
122{
123
124	DRM_LOCK(dev);
125
126	if (dev->unique != NULL) {
127		DRM_UNLOCK(dev);
128		return EBUSY;
129	}
130
131	dev->unique_len = 20;
132	dev->unique = malloc(dev->unique_len + 1, DRM_MEM_DRIVER, M_NOWAIT);
133	if (dev->unique == NULL) {
134		DRM_UNLOCK(dev);
135		return ENOMEM;
136	}
137
138	snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
139	    dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
140
141	DRM_UNLOCK(dev);
142
143	return 0;
144}
145
146int drm_getmap(struct drm_device *dev, void *data, struct drm_file *file_priv)
147{
148	struct drm_map     *map = data;
149	drm_local_map_t    *mapinlist;
150	int          idx;
151	int	     i = 0;
152
153	idx = map->offset;
154
155	DRM_LOCK(dev);
156	if (idx < 0) {
157		DRM_UNLOCK(dev);
158		return EINVAL;
159	}
160
161	TAILQ_FOREACH(mapinlist, &dev->maplist, link) {
162		if (i == idx) {
163			map->offset = mapinlist->offset;
164			map->size   = mapinlist->size;
165			map->type   = mapinlist->type;
166			map->flags  = mapinlist->flags;
167			map->handle = mapinlist->handle;
168			map->mtrr   = mapinlist->mtrr;
169			break;
170		}
171		i++;
172	}
173
174	DRM_UNLOCK(dev);
175
176 	if (mapinlist == NULL)
177		return EINVAL;
178
179	return 0;
180}
181
182int drm_getclient(struct drm_device *dev, void *data,
183		  struct drm_file *file_priv)
184{
185	struct drm_client *client = data;
186	struct drm_file *pt;
187	int idx;
188	int i = 0;
189
190	idx = client->idx;
191	DRM_LOCK(dev);
192	TAILQ_FOREACH(pt, &dev->files, link) {
193		if (i == idx) {
194			client->auth  = pt->authenticated;
195			client->pid   = pt->pid;
196			client->uid   = pt->uid;
197			client->magic = pt->magic;
198			client->iocs  = pt->ioctl_count;
199			DRM_UNLOCK(dev);
200			return 0;
201		}
202		i++;
203	}
204	DRM_UNLOCK(dev);
205
206	return EINVAL;
207}
208
209int drm_getstats(struct drm_device *dev, void *data, struct drm_file *file_priv)
210{
211	struct drm_stats *stats = data;
212	int          i;
213
214	memset(stats, 0, sizeof(struct drm_stats));
215
216	DRM_LOCK(dev);
217
218	for (i = 0; i < dev->counters; i++) {
219		if (dev->types[i] == _DRM_STAT_LOCK)
220			stats->data[i].value =
221			    (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0);
222		else
223			stats->data[i].value = atomic_read(&dev->counts[i]);
224		stats->data[i].type = dev->types[i];
225	}
226
227	stats->count = dev->counters;
228
229	DRM_UNLOCK(dev);
230
231	return 0;
232}
233
234int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
235{
236	struct drm_get_cap *req = data;
237
238	req->value = 0;
239	switch (req->capability) {
240	case DRM_CAP_DUMB_BUFFER:
241		if (dev->driver->dumb_create)
242			req->value = 1;
243		break;
244	case DRM_CAP_VBLANK_HIGH_CRTC:
245		req->value = 1;
246		break;
247	case DRM_CAP_DUMB_PREFERRED_DEPTH:
248		req->value = dev->mode_config.preferred_depth;
249		break;
250	case DRM_CAP_DUMB_PREFER_SHADOW:
251		req->value = dev->mode_config.prefer_shadow;
252		break;
253	case DRM_CAP_TIMESTAMP_MONOTONIC:
254		req->value = drm_timestamp_monotonic;
255		break;
256	default:
257		return EINVAL;
258	}
259	return 0;
260}
261
262int drm_setversion(struct drm_device *dev, void *data,
263		   struct drm_file *file_priv)
264{
265	struct drm_set_version *sv = data;
266	struct drm_set_version ver;
267	int if_version;
268
269	/* Save the incoming data, and set the response before continuing
270	 * any further.
271	 */
272	ver = *sv;
273	sv->drm_di_major = DRM_IF_MAJOR;
274	sv->drm_di_minor = DRM_IF_MINOR;
275	sv->drm_dd_major = dev->driver->major;
276	sv->drm_dd_minor = dev->driver->minor;
277
278	DRM_DEBUG("ver.drm_di_major %d ver.drm_di_minor %d "
279	    "ver.drm_dd_major %d ver.drm_dd_minor %d\n",
280	    ver.drm_di_major, ver.drm_di_minor, ver.drm_dd_major,
281	    ver.drm_dd_minor);
282	DRM_DEBUG("sv->drm_di_major %d sv->drm_di_minor %d "
283	    "sv->drm_dd_major %d sv->drm_dd_minor %d\n",
284	    sv->drm_di_major, sv->drm_di_minor, sv->drm_dd_major,
285	    sv->drm_dd_minor);
286
287	if (ver.drm_di_major != -1) {
288		if (ver.drm_di_major != DRM_IF_MAJOR ||
289		    ver.drm_di_minor < 0 || ver.drm_di_minor > DRM_IF_MINOR) {
290			return EINVAL;
291		}
292		if_version = DRM_IF_VERSION(ver.drm_di_major,
293		    ver.drm_dd_minor);
294		dev->if_version = DRM_MAX(if_version, dev->if_version);
295		if (ver.drm_di_minor >= 1) {
296			/*
297			 * Version 1.1 includes tying of DRM to specific device
298			 */
299			drm_set_busid(dev);
300		}
301	}
302
303	if (ver.drm_dd_major != -1) {
304		if (ver.drm_dd_major != dev->driver->major ||
305		    ver.drm_dd_minor < 0 ||
306		    ver.drm_dd_minor > dev->driver->minor)
307		{
308			return EINVAL;
309		}
310	}
311
312	return 0;
313}
314
315
316int drm_noop(struct drm_device *dev, void *data, struct drm_file *file_priv)
317{
318	DRM_DEBUG("\n");
319	return 0;
320}
321