3 * /proc support for DRM
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
8 * \par Acknowledgements:
9 * Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
10 * the problem with the proc files not outputting all their information.
14 * Created: Mon Jan 11 09:48:47 1999 by faith@valinux.com
16 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
17 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
18 * All Rights Reserved.
20 * Permission is hereby granted, free of charge, to any person obtaining a
21 * copy of this software and associated documentation files (the "Software"),
22 * to deal in the Software without restriction, including without limitation
23 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
24 * and/or sell copies of the Software, and to permit persons to whom the
25 * Software is furnished to do so, subject to the following conditions:
27 * The above copyright notice and this permission notice (including the next
28 * paragraph) shall be included in all copies or substantial portions of the
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
32 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
33 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
34 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
35 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
36 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
37 * OTHER DEALINGS IN THE SOFTWARE.
42 static int drm_name_info(char *buf, char **start, off_t offset,
43 int request, int *eof, void *data);
44 static int drm_vm_info(char *buf, char **start, off_t offset,
45 int request, int *eof, void *data);
46 static int drm_clients_info(char *buf, char **start, off_t offset,
47 int request, int *eof, void *data);
48 static int drm_queues_info(char *buf, char **start, off_t offset,
49 int request, int *eof, void *data);
50 static int drm_bufs_info(char *buf, char **start, off_t offset,
51 int request, int *eof, void *data);
53 static int drm_vma_info(char *buf, char **start, off_t offset,
54 int request, int *eof, void *data);
60 static struct drm_proc_list {
61 const char *name; /**< file name */
62 int (*f) (char *, char **, off_t, int, int *, void *); /**< proc callback*/
64 {"name", drm_name_info},
65 {"mem", drm_mem_info},
67 {"clients", drm_clients_info},
68 {"queues", drm_queues_info},
69 {"bufs", drm_bufs_info},
71 {"vma", drm_vma_info},
75 #define DRM_PROC_ENTRIES ARRAY_SIZE(drm_proc_list)
78 * Initialize the DRI proc filesystem for a device.
80 * \param dev DRM device.
81 * \param minor device minor number.
82 * \param root DRI proc dir entry.
83 * \param dev_root resulting DRI device proc dir entry.
84 * \return root entry pointer on success, or NULL on failure.
86 * Create the DRI proc root entry "/proc/dri", the device proc root entry
87 * "/proc/dri/%minor%/", and each entry in proc_list as
88 * "/proc/dri/%minor%/%name%".
90 int drm_proc_init(struct drm_minor *minor, int minor_id,
91 struct proc_dir_entry *root)
93 struct proc_dir_entry *ent;
97 sprintf(name, "%d", minor_id);
98 minor->dev_root = proc_mkdir(name, root);
99 if (!minor->dev_root) {
100 DRM_ERROR("Cannot create /proc/dri/%s\n", name);
104 for (i = 0; i < DRM_PROC_ENTRIES; i++) {
105 ent = create_proc_entry(drm_proc_list[i].name,
106 S_IFREG | S_IRUGO, minor->dev_root);
108 DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
109 name, drm_proc_list[i].name);
110 for (j = 0; j < i; j++)
111 remove_proc_entry(drm_proc_list[i].name,
113 remove_proc_entry(name, root);
114 minor->dev_root = NULL;
117 ent->read_proc = drm_proc_list[i].f;
125 * Cleanup the proc filesystem resources.
127 * \param minor device minor number.
128 * \param root DRI proc dir entry.
129 * \param dev_root DRI device proc dir entry.
130 * \return always zero.
132 * Remove all proc entries created by proc_init().
134 int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root)
139 if (!root || !minor->dev_root)
142 for (i = 0; i < DRM_PROC_ENTRIES; i++)
143 remove_proc_entry(drm_proc_list[i].name, minor->dev_root);
144 sprintf(name, "%d", minor->index);
145 remove_proc_entry(name, root);
151 * Called when "/proc/dri/.../name" is read.
153 * \param buf output buffer.
154 * \param start start of output data.
155 * \param offset requested start offset.
156 * \param request requested number of bytes.
157 * \param eof whether there is no more data to return.
158 * \param data private data.
159 * \return number of written bytes.
161 * Prints the device name together with the bus id if available.
163 static int drm_name_info(char *buf, char **start, off_t offset, int request,
164 int *eof, void *data)
166 struct drm_minor *minor = (struct drm_minor *) data;
167 struct drm_device *dev = minor->dev;
170 if (offset > DRM_PROC_LIMIT) {
175 *start = &buf[offset];
179 DRM_PROC_PRINT("%s %s %s\n",
180 dev->driver->pci_driver.name,
181 pci_name(dev->pdev), dev->unique);
183 DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name,
184 pci_name(dev->pdev));
187 if (len > request + offset)
194 * Called when "/proc/dri/.../vm" is read.
196 * \param buf output buffer.
197 * \param start start of output data.
198 * \param offset requested start offset.
199 * \param request requested number of bytes.
200 * \param eof whether there is no more data to return.
201 * \param data private data.
202 * \return number of written bytes.
204 * Prints information about all mappings in drm_device::maplist.
206 static int drm__vm_info(char *buf, char **start, off_t offset, int request,
207 int *eof, void *data)
209 struct drm_minor *minor = (struct drm_minor *) data;
210 struct drm_device *dev = minor->dev;
213 struct drm_map_list *r_list;
215 /* Hardcoded from _DRM_FRAME_BUFFER,
216 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
217 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
218 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
222 if (offset > DRM_PROC_LIMIT) {
227 *start = &buf[offset];
230 DRM_PROC_PRINT("slot offset size type flags "
233 list_for_each_entry(r_list, &dev->maplist, head) {
237 if (map->type < 0 || map->type > 5)
240 type = types[map->type];
241 DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ",
244 map->size, type, map->flags,
245 (unsigned long) r_list->user_token);
247 DRM_PROC_PRINT("none\n");
249 DRM_PROC_PRINT("%4d\n", map->mtrr);
254 if (len > request + offset)
261 * Simply calls _vm_info() while holding the drm_device::struct_mutex lock.
263 static int drm_vm_info(char *buf, char **start, off_t offset, int request,
264 int *eof, void *data)
266 struct drm_minor *minor = (struct drm_minor *) data;
267 struct drm_device *dev = minor->dev;
270 mutex_lock(&dev->struct_mutex);
271 ret = drm__vm_info(buf, start, offset, request, eof, data);
272 mutex_unlock(&dev->struct_mutex);
277 * Called when "/proc/dri/.../queues" is read.
279 * \param buf output buffer.
280 * \param start start of output data.
281 * \param offset requested start offset.
282 * \param request requested number of bytes.
283 * \param eof whether there is no more data to return.
284 * \param data private data.
285 * \return number of written bytes.
287 static int drm__queues_info(char *buf, char **start, off_t offset,
288 int request, int *eof, void *data)
290 struct drm_minor *minor = (struct drm_minor *) data;
291 struct drm_device *dev = minor->dev;
296 if (offset > DRM_PROC_LIMIT) {
301 *start = &buf[offset];
304 DRM_PROC_PRINT(" ctx/flags use fin"
305 " blk/rw/rwf wait flushed queued"
307 for (i = 0; i < dev->queue_count; i++) {
308 q = dev->queuelist[i];
309 atomic_inc(&q->use_count);
310 DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
312 " %5d/%c%c/%c%c%c %5Zd\n",
315 atomic_read(&q->use_count),
316 atomic_read(&q->finalization),
317 atomic_read(&q->block_count),
318 atomic_read(&q->block_read) ? 'r' : '-',
319 atomic_read(&q->block_write) ? 'w' : '-',
320 waitqueue_active(&q->read_queue) ? 'r' : '-',
321 waitqueue_active(&q->
322 write_queue) ? 'w' : '-',
323 waitqueue_active(&q->
324 flush_queue) ? 'f' : '-',
325 DRM_BUFCOUNT(&q->waitlist));
326 atomic_dec(&q->use_count);
329 if (len > request + offset)
336 * Simply calls _queues_info() while holding the drm_device::struct_mutex lock.
338 static int drm_queues_info(char *buf, char **start, off_t offset, int request,
339 int *eof, void *data)
341 struct drm_minor *minor = (struct drm_minor *) data;
342 struct drm_device *dev = minor->dev;
345 mutex_lock(&dev->struct_mutex);
346 ret = drm__queues_info(buf, start, offset, request, eof, data);
347 mutex_unlock(&dev->struct_mutex);
352 * Called when "/proc/dri/.../bufs" is read.
354 * \param buf output buffer.
355 * \param start start of output data.
356 * \param offset requested start offset.
357 * \param request requested number of bytes.
358 * \param eof whether there is no more data to return.
359 * \param data private data.
360 * \return number of written bytes.
362 static int drm__bufs_info(char *buf, char **start, off_t offset, int request,
363 int *eof, void *data)
365 struct drm_minor *minor = (struct drm_minor *) data;
366 struct drm_device *dev = minor->dev;
368 struct drm_device_dma *dma = dev->dma;
371 if (!dma || offset > DRM_PROC_LIMIT) {
376 *start = &buf[offset];
379 DRM_PROC_PRINT(" o size count free segs pages kB\n\n");
380 for (i = 0; i <= DRM_MAX_ORDER; i++) {
381 if (dma->bufs[i].buf_count)
382 DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
384 dma->bufs[i].buf_size,
385 dma->bufs[i].buf_count,
386 atomic_read(&dma->bufs[i]
388 dma->bufs[i].seg_count,
389 dma->bufs[i].seg_count
390 * (1 << dma->bufs[i].page_order),
391 (dma->bufs[i].seg_count
392 * (1 << dma->bufs[i].page_order))
395 DRM_PROC_PRINT("\n");
396 for (i = 0; i < dma->buf_count; i++) {
398 DRM_PROC_PRINT("\n");
399 DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
401 DRM_PROC_PRINT("\n");
403 if (len > request + offset)
410 * Simply calls _bufs_info() while holding the drm_device::struct_mutex lock.
412 static int drm_bufs_info(char *buf, char **start, off_t offset, int request,
413 int *eof, void *data)
415 struct drm_minor *minor = (struct drm_minor *) data;
416 struct drm_device *dev = minor->dev;
419 mutex_lock(&dev->struct_mutex);
420 ret = drm__bufs_info(buf, start, offset, request, eof, data);
421 mutex_unlock(&dev->struct_mutex);
426 * Called when "/proc/dri/.../clients" is read.
428 * \param buf output buffer.
429 * \param start start of output data.
430 * \param offset requested start offset.
431 * \param request requested number of bytes.
432 * \param eof whether there is no more data to return.
433 * \param data private data.
434 * \return number of written bytes.
436 static int drm__clients_info(char *buf, char **start, off_t offset,
437 int request, int *eof, void *data)
439 struct drm_minor *minor = (struct drm_minor *) data;
440 struct drm_device *dev = minor->dev;
442 struct drm_file *priv;
444 if (offset > DRM_PROC_LIMIT) {
449 *start = &buf[offset];
452 DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
453 list_for_each_entry(priv, &dev->filelist, lhead) {
454 DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
455 priv->authenticated ? 'y' : 'n',
458 priv->uid, priv->magic, priv->ioctl_count);
461 if (len > request + offset)
468 * Simply calls _clients_info() while holding the drm_device::struct_mutex lock.
470 static int drm_clients_info(char *buf, char **start, off_t offset,
471 int request, int *eof, void *data)
473 struct drm_minor *minor = (struct drm_minor *) data;
474 struct drm_device *dev = minor->dev;
477 mutex_lock(&dev->struct_mutex);
478 ret = drm__clients_info(buf, start, offset, request, eof, data);
479 mutex_unlock(&dev->struct_mutex);
485 static int drm__vma_info(char *buf, char **start, off_t offset, int request,
486 int *eof, void *data)
488 struct drm_minor *minor = (struct drm_minor *) data;
489 struct drm_device *dev = minor->dev;
491 struct drm_vma_entry *pt;
492 struct vm_area_struct *vma;
493 #if defined(__i386__)
497 if (offset > DRM_PROC_LIMIT) {
502 *start = &buf[offset];
505 DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
506 atomic_read(&dev->vma_count),
507 high_memory, virt_to_phys(high_memory));
508 list_for_each_entry(pt, &dev->vmalist, head) {
509 if (!(vma = pt->vma))
511 DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx000",
515 vma->vm_flags & VM_READ ? 'r' : '-',
516 vma->vm_flags & VM_WRITE ? 'w' : '-',
517 vma->vm_flags & VM_EXEC ? 'x' : '-',
518 vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
519 vma->vm_flags & VM_LOCKED ? 'l' : '-',
520 vma->vm_flags & VM_IO ? 'i' : '-',
523 #if defined(__i386__)
524 pgprot = pgprot_val(vma->vm_page_prot);
525 DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
526 pgprot & _PAGE_PRESENT ? 'p' : '-',
527 pgprot & _PAGE_RW ? 'w' : 'r',
528 pgprot & _PAGE_USER ? 'u' : 's',
529 pgprot & _PAGE_PWT ? 't' : 'b',
530 pgprot & _PAGE_PCD ? 'u' : 'c',
531 pgprot & _PAGE_ACCESSED ? 'a' : '-',
532 pgprot & _PAGE_DIRTY ? 'd' : '-',
533 pgprot & _PAGE_PSE ? 'm' : 'k',
534 pgprot & _PAGE_GLOBAL ? 'g' : 'l');
536 DRM_PROC_PRINT("\n");
539 if (len > request + offset)
545 static int drm_vma_info(char *buf, char **start, off_t offset, int request,
546 int *eof, void *data)
548 struct drm_minor *minor = (struct drm_minor *) data;
549 struct drm_device *dev = minor->dev;
552 mutex_lock(&dev->struct_mutex);
553 ret = drm__vma_info(buf, start, offset, request, eof, data);
554 mutex_unlock(&dev->struct_mutex);