Merge tag 'dt2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[pandora-kernel.git] / drivers / gpu / drm / drm_info.c
1 /**
2  * \file drm_info.c
3  * DRM info file implementations
4  *
5  * \author Ben Gamari <bgamari@gmail.com>
6  */
7
8 /*
9  * Created: Sun Dec 21 13:09:50 2008 by bgamari@gmail.com
10  *
11  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
12  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
13  * Copyright 2008 Ben Gamari <bgamari@gmail.com>
14  * All Rights Reserved.
15  *
16  * Permission is hereby granted, free of charge, to any person obtaining a
17  * copy of this software and associated documentation files (the "Software"),
18  * to deal in the Software without restriction, including without limitation
19  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20  * and/or sell copies of the Software, and to permit persons to whom the
21  * Software is furnished to do so, subject to the following conditions:
22  *
23  * The above copyright notice and this permission notice (including the next
24  * paragraph) shall be included in all copies or substantial portions of the
25  * Software.
26  *
27  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
30  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
31  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
32  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
33  * OTHER DEALINGS IN THE SOFTWARE.
34  */
35
36 #include <linux/seq_file.h>
37 #include <drm/drmP.h>
38 #include <drm/drm_gem.h>
39
40 #include "drm_legacy.h"
41
42 /**
43  * Called when "/proc/dri/.../name" is read.
44  *
45  * Prints the device name together with the bus id if available.
46  */
47 int drm_name_info(struct seq_file *m, void *data)
48 {
49         struct drm_info_node *node = (struct drm_info_node *) m->private;
50         struct drm_minor *minor = node->minor;
51         struct drm_device *dev = minor->dev;
52         struct drm_master *master = minor->master;
53         if (!master)
54                 return 0;
55
56         if (master->unique) {
57                 seq_printf(m, "%s %s %s\n",
58                            dev->driver->name,
59                            dev_name(dev->dev), master->unique);
60         } else {
61                 seq_printf(m, "%s %s\n",
62                            dev->driver->name, dev_name(dev->dev));
63         }
64         return 0;
65 }
66
67 /**
68  * Called when "/proc/dri/.../vm" is read.
69  *
70  * Prints information about all mappings in drm_device::maplist.
71  */
72 int drm_vm_info(struct seq_file *m, void *data)
73 {
74         struct drm_info_node *node = (struct drm_info_node *) m->private;
75         struct drm_device *dev = node->minor->dev;
76         struct drm_local_map *map;
77         struct drm_map_list *r_list;
78
79         /* Hardcoded from _DRM_FRAME_BUFFER,
80            _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
81            _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
82         const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
83         const char *type;
84         int i;
85
86         mutex_lock(&dev->struct_mutex);
87         seq_printf(m, "slot      offset       size type flags    address mtrr\n\n");
88         i = 0;
89         list_for_each_entry(r_list, &dev->maplist, head) {
90                 map = r_list->map;
91                 if (!map)
92                         continue;
93                 if (map->type < 0 || map->type > 5)
94                         type = "??";
95                 else
96                         type = types[map->type];
97
98                 seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s  0x%02x 0x%08lx ",
99                            i,
100                            (unsigned long long)map->offset,
101                            map->size, type, map->flags,
102                            (unsigned long) r_list->user_token);
103                 if (map->mtrr < 0)
104                         seq_printf(m, "none\n");
105                 else
106                         seq_printf(m, "%4d\n", map->mtrr);
107                 i++;
108         }
109         mutex_unlock(&dev->struct_mutex);
110         return 0;
111 }
112
113 /**
114  * Called when "/proc/dri/.../bufs" is read.
115  */
116 int drm_bufs_info(struct seq_file *m, void *data)
117 {
118         struct drm_info_node *node = (struct drm_info_node *) m->private;
119         struct drm_device *dev = node->minor->dev;
120         struct drm_device_dma *dma;
121         int i, seg_pages;
122
123         mutex_lock(&dev->struct_mutex);
124         dma = dev->dma;
125         if (!dma) {
126                 mutex_unlock(&dev->struct_mutex);
127                 return 0;
128         }
129
130         seq_printf(m, " o     size count  free   segs pages    kB\n\n");
131         for (i = 0; i <= DRM_MAX_ORDER; i++) {
132                 if (dma->bufs[i].buf_count) {
133                         seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order);
134                         seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n",
135                                    i,
136                                    dma->bufs[i].buf_size,
137                                    dma->bufs[i].buf_count,
138                                    0,
139                                    dma->bufs[i].seg_count,
140                                    seg_pages,
141                                    seg_pages * PAGE_SIZE / 1024);
142                 }
143         }
144         seq_printf(m, "\n");
145         for (i = 0; i < dma->buf_count; i++) {
146                 if (i && !(i % 32))
147                         seq_printf(m, "\n");
148                 seq_printf(m, " %d", dma->buflist[i]->list);
149         }
150         seq_printf(m, "\n");
151         mutex_unlock(&dev->struct_mutex);
152         return 0;
153 }
154
155 /**
156  * Called when "/proc/dri/.../vblank" is read.
157  */
158 int drm_vblank_info(struct seq_file *m, void *data)
159 {
160         struct drm_info_node *node = (struct drm_info_node *) m->private;
161         struct drm_device *dev = node->minor->dev;
162         int crtc;
163
164         mutex_lock(&dev->struct_mutex);
165         for (crtc = 0; crtc < dev->num_crtcs; crtc++) {
166                 seq_printf(m, "CRTC %d enable:     %d\n",
167                            crtc, atomic_read(&dev->vblank[crtc].refcount));
168                 seq_printf(m, "CRTC %d counter:    %d\n",
169                            crtc, drm_vblank_count(dev, crtc));
170                 seq_printf(m, "CRTC %d last wait:  %d\n",
171                            crtc, dev->vblank[crtc].last_wait);
172                 seq_printf(m, "CRTC %d in modeset: %d\n",
173                            crtc, dev->vblank[crtc].inmodeset);
174         }
175         mutex_unlock(&dev->struct_mutex);
176         return 0;
177 }
178
179 /**
180  * Called when "/proc/dri/.../clients" is read.
181  *
182  */
183 int drm_clients_info(struct seq_file *m, void *data)
184 {
185         struct drm_info_node *node = (struct drm_info_node *) m->private;
186         struct drm_device *dev = node->minor->dev;
187         struct drm_file *priv;
188
189         seq_printf(m,
190                    "%20s %5s %3s master a %5s %10s\n",
191                    "command",
192                    "pid",
193                    "dev",
194                    "uid",
195                    "magic");
196
197         /* dev->filelist is sorted youngest first, but we want to present
198          * oldest first (i.e. kernel, servers, clients), so walk backwardss.
199          */
200         mutex_lock(&dev->struct_mutex);
201         list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
202                 struct task_struct *task;
203
204                 rcu_read_lock(); /* locks pid_task()->comm */
205                 task = pid_task(priv->pid, PIDTYPE_PID);
206                 seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u\n",
207                            task ? task->comm : "<unknown>",
208                            pid_vnr(priv->pid),
209                            priv->minor->index,
210                            priv->is_master ? 'y' : 'n',
211                            priv->authenticated ? 'y' : 'n',
212                            from_kuid_munged(seq_user_ns(m), priv->uid),
213                            priv->magic);
214                 rcu_read_unlock();
215         }
216         mutex_unlock(&dev->struct_mutex);
217         return 0;
218 }
219
220
221 static int drm_gem_one_name_info(int id, void *ptr, void *data)
222 {
223         struct drm_gem_object *obj = ptr;
224         struct seq_file *m = data;
225
226         seq_printf(m, "%6d %8zd %7d %8d\n",
227                    obj->name, obj->size,
228                    obj->handle_count,
229                    atomic_read(&obj->refcount.refcount));
230         return 0;
231 }
232
233 int drm_gem_name_info(struct seq_file *m, void *data)
234 {
235         struct drm_info_node *node = (struct drm_info_node *) m->private;
236         struct drm_device *dev = node->minor->dev;
237
238         seq_printf(m, "  name     size handles refcount\n");
239
240         mutex_lock(&dev->object_name_lock);
241         idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
242         mutex_unlock(&dev->object_name_lock);
243
244         return 0;
245 }