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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
39/**
40 * Called when "/proc/dri/.../name" is read.
41 *
42 * Prints the device name together with the bus id if available.
43 */
44int drm_name_info(struct seq_file *m, void *data)
45{
46 struct drm_info_node *node = (struct drm_info_node *) m->private;
47 struct drm_minor *minor = node->minor;
48 struct drm_device *dev = minor->dev;
49 struct drm_master *master = minor->master;
50 const char *bus_name;
51 if (!master)
52 return 0;
53
54 bus_name = dev->driver->bus->get_name(dev);
55 if (master->unique) {
56 seq_printf(m, "%s %s %s\n",
57 bus_name,
58 dev_name(dev->dev), master->unique);
59 } else {
60 seq_printf(m, "%s %s\n",
61 bus_name, dev_name(dev->dev));
62 }
63 return 0;
64}
65
66/**
67 * Called when "/proc/dri/.../vm" is read.
68 *
69 * Prints information about all mappings in drm_device::maplist.
70 */
71int drm_vm_info(struct seq_file *m, void *data)
72{
73 struct drm_info_node *node = (struct drm_info_node *) m->private;
74 struct drm_device *dev = node->minor->dev;
75 struct drm_local_map *map;
76 struct drm_map_list *r_list;
77
78 /* Hardcoded from _DRM_FRAME_BUFFER,
79 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
80 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
81 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
82 const char *type;
83 int i;
84
85 mutex_lock(&dev->struct_mutex);
86 seq_printf(m, "slot offset size type flags address mtrr\n\n");
87 i = 0;
88 list_for_each_entry(r_list, &dev->maplist, head) {
89 map = r_list->map;
90 if (!map)
91 continue;
92 if (map->type < 0 || map->type > 5)
93 type = "??";
94 else
95 type = types[map->type];
96
97 seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ",
98 i,
99 (unsigned long long)map->offset,
100 map->size, type, map->flags,
101 (unsigned long) r_list->user_token);
102 if (map->mtrr < 0)
103 seq_printf(m, "none\n");
104 else
105 seq_printf(m, "%4d\n", map->mtrr);
106 i++;
107 }
108 mutex_unlock(&dev->struct_mutex);
109 return 0;
110}
111
112/**
113 * Called when "/proc/dri/.../bufs" is read.
114 */
115int drm_bufs_info(struct seq_file *m, void *data)
116{
117 struct drm_info_node *node = (struct drm_info_node *) m->private;
118 struct drm_device *dev = node->minor->dev;
119 struct drm_device_dma *dma;
120 int i, seg_pages;
121
122 mutex_lock(&dev->struct_mutex);
123 dma = dev->dma;
124 if (!dma) {
125 mutex_unlock(&dev->struct_mutex);
126 return 0;
127 }
128
129 seq_printf(m, " o size count free segs pages kB\n\n");
130 for (i = 0; i <= DRM_MAX_ORDER; i++) {
131 if (dma->bufs[i].buf_count) {
132 seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order);
133 seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n",
134 i,
135 dma->bufs[i].buf_size,
136 dma->bufs[i].buf_count,
137 atomic_read(&dma->bufs[i].freelist.count),
138 dma->bufs[i].seg_count,
139 seg_pages,
140 seg_pages * PAGE_SIZE / 1024);
141 }
142 }
143 seq_printf(m, "\n");
144 for (i = 0; i < dma->buf_count; i++) {
145 if (i && !(i % 32))
146 seq_printf(m, "\n");
147 seq_printf(m, " %d", dma->buflist[i]->list);
148 }
149 seq_printf(m, "\n");
150 mutex_unlock(&dev->struct_mutex);
151 return 0;
152}
153
154/**
155 * Called when "/proc/dri/.../vblank" is read.
156 */
157int drm_vblank_info(struct seq_file *m, void *data)
158{
159 struct drm_info_node *node = (struct drm_info_node *) m->private;
160 struct drm_device *dev = node->minor->dev;
161 int crtc;
162
163 mutex_lock(&dev->struct_mutex);
164 for (crtc = 0; crtc < dev->num_crtcs; crtc++) {
165 seq_printf(m, "CRTC %d enable: %d\n",
166 crtc, atomic_read(&dev->vblank[crtc].refcount));
167 seq_printf(m, "CRTC %d counter: %d\n",
168 crtc, drm_vblank_count(dev, crtc));
169 seq_printf(m, "CRTC %d last wait: %d\n",
170 crtc, dev->vblank[crtc].last_wait);
171 seq_printf(m, "CRTC %d in modeset: %d\n",
172 crtc, dev->vblank[crtc].inmodeset);
173 }
174 mutex_unlock(&dev->struct_mutex);
175 return 0;
176}
177
178/**
179 * Called when "/proc/dri/.../clients" is read.
180 *
181 */
182int drm_clients_info(struct seq_file *m, void *data)
183{
184 struct drm_info_node *node = (struct drm_info_node *) m->private;
185 struct drm_device *dev = node->minor->dev;
186 struct drm_file *priv;
187
188 mutex_lock(&dev->struct_mutex);
189 seq_printf(m, "a dev pid uid magic\n\n");
190 list_for_each_entry(priv, &dev->filelist, lhead) {
191 seq_printf(m, "%c %3d %5d %5d %10u\n",
192 priv->authenticated ? 'y' : 'n',
193 priv->minor->index,
194 pid_vnr(priv->pid),
195 from_kuid_munged(seq_user_ns(m), priv->uid),
196 priv->magic);
197 }
198 mutex_unlock(&dev->struct_mutex);
199 return 0;
200}
201
202
203static int drm_gem_one_name_info(int id, void *ptr, void *data)
204{
205 struct drm_gem_object *obj = ptr;
206 struct seq_file *m = data;
207
208 seq_printf(m, "%6d %8zd %7d %8d\n",
209 obj->name, obj->size,
210 obj->handle_count,
211 atomic_read(&obj->refcount.refcount));
212 return 0;
213}
214
215int drm_gem_name_info(struct seq_file *m, void *data)
216{
217 struct drm_info_node *node = (struct drm_info_node *) m->private;
218 struct drm_device *dev = node->minor->dev;
219
220 seq_printf(m, " name size handles refcount\n");
221
222 mutex_lock(&dev->object_name_lock);
223 idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
224 mutex_unlock(&dev->object_name_lock);
225
226 return 0;
227}
228
229#if DRM_DEBUG_CODE
230
231int drm_vma_info(struct seq_file *m, void *data)
232{
233 struct drm_info_node *node = (struct drm_info_node *) m->private;
234 struct drm_device *dev = node->minor->dev;
235 struct drm_vma_entry *pt;
236 struct vm_area_struct *vma;
237 unsigned long vma_count = 0;
238#if defined(__i386__)
239 unsigned int pgprot;
240#endif
241
242 mutex_lock(&dev->struct_mutex);
243 list_for_each_entry(pt, &dev->vmalist, head)
244 vma_count++;
245
246 seq_printf(m, "vma use count: %lu, high_memory = %pK, 0x%pK\n",
247 vma_count, high_memory,
248 (void *)(unsigned long)virt_to_phys(high_memory));
249
250 list_for_each_entry(pt, &dev->vmalist, head) {
251 vma = pt->vma;
252 if (!vma)
253 continue;
254 seq_printf(m,
255 "\n%5d 0x%pK-0x%pK %c%c%c%c%c%c 0x%08lx000",
256 pt->pid,
257 (void *)vma->vm_start, (void *)vma->vm_end,
258 vma->vm_flags & VM_READ ? 'r' : '-',
259 vma->vm_flags & VM_WRITE ? 'w' : '-',
260 vma->vm_flags & VM_EXEC ? 'x' : '-',
261 vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
262 vma->vm_flags & VM_LOCKED ? 'l' : '-',
263 vma->vm_flags & VM_IO ? 'i' : '-',
264 vma->vm_pgoff);
265
266#if defined(__i386__)
267 pgprot = pgprot_val(vma->vm_page_prot);
268 seq_printf(m, " %c%c%c%c%c%c%c%c%c",
269 pgprot & _PAGE_PRESENT ? 'p' : '-',
270 pgprot & _PAGE_RW ? 'w' : 'r',
271 pgprot & _PAGE_USER ? 'u' : 's',
272 pgprot & _PAGE_PWT ? 't' : 'b',
273 pgprot & _PAGE_PCD ? 'u' : 'c',
274 pgprot & _PAGE_ACCESSED ? 'a' : '-',
275 pgprot & _PAGE_DIRTY ? 'd' : '-',
276 pgprot & _PAGE_PSE ? 'm' : 'k',
277 pgprot & _PAGE_GLOBAL ? 'g' : 'l');
278#endif
279 seq_printf(m, "\n");
280 }
281 mutex_unlock(&dev->struct_mutex);
282 return 0;
283}
284
285#endif
286