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 (sizeof(drm_proc_list)/sizeof(drm_proc_list[0]))
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(drm_device_t * dev, int minor,
91 struct proc_dir_entry *root, struct proc_dir_entry **dev_root)
93 struct proc_dir_entry *ent;
97 sprintf(name, "%d", minor);
98 *dev_root = proc_mkdir(name, 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, *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);
116 ent->read_proc = drm_proc_list[i].f;
124 * Cleanup the proc filesystem resources.
126 * \param minor device minor number.
127 * \param root DRI proc dir entry.
128 * \param dev_root DRI device proc dir entry.
129 * \return always zero.
131 * Remove all proc entries created by proc_init().
133 int drm_proc_cleanup(int minor, struct proc_dir_entry *root,
134 struct proc_dir_entry *dev_root)
139 if (!root || !dev_root)
142 for (i = 0; i < DRM_PROC_ENTRIES; i++)
143 remove_proc_entry(drm_proc_list[i].name, dev_root);
144 sprintf(name, "%d", minor);
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 drm_device_t *dev = (drm_device_t *) data;
169 if (offset > DRM_PROC_LIMIT) {
174 *start = &buf[offset];
178 DRM_PROC_PRINT("%s %s %s\n",
179 dev->driver->pci_driver.name,
180 pci_name(dev->pdev), dev->unique);
182 DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name,
183 pci_name(dev->pdev));
186 if (len > request + offset)
193 * Called when "/proc/dri/.../vm" is read.
195 * \param buf output buffer.
196 * \param start start of output data.
197 * \param offset requested start offset.
198 * \param request requested number of bytes.
199 * \param eof whether there is no more data to return.
200 * \param data private data.
201 * \return number of written bytes.
203 * Prints information about all mappings in drm_device::maplist.
205 static int drm__vm_info(char *buf, char **start, off_t offset, int request,
206 int *eof, void *data)
208 drm_device_t *dev = (drm_device_t *) data;
211 drm_map_list_t *r_list;
212 struct list_head *list;
214 /* Hardcoded from _DRM_FRAME_BUFFER,
215 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
216 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
217 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
221 if (offset > DRM_PROC_LIMIT) {
226 *start = &buf[offset];
229 DRM_PROC_PRINT("slot offset size type flags "
232 if (dev->maplist != NULL)
233 list_for_each(list, &dev->maplist->head) {
234 r_list = list_entry(list, drm_map_list_t, head);
238 if (map->type < 0 || map->type > 5)
241 type = types[map->type];
242 DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
245 map->size, type, map->flags, 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 drm_device_t *dev = (drm_device_t *) data;
269 mutex_lock(&dev->struct_mutex);
270 ret = drm__vm_info(buf, start, offset, request, eof, data);
271 mutex_unlock(&dev->struct_mutex);
276 * Called when "/proc/dri/.../queues" is read.
278 * \param buf output buffer.
279 * \param start start of output data.
280 * \param offset requested start offset.
281 * \param request requested number of bytes.
282 * \param eof whether there is no more data to return.
283 * \param data private data.
284 * \return number of written bytes.
286 static int drm__queues_info(char *buf, char **start, off_t offset,
287 int request, int *eof, void *data)
289 drm_device_t *dev = (drm_device_t *) data;
294 if (offset > DRM_PROC_LIMIT) {
299 *start = &buf[offset];
302 DRM_PROC_PRINT(" ctx/flags use fin"
303 " blk/rw/rwf wait flushed queued"
305 for (i = 0; i < dev->queue_count; i++) {
306 q = dev->queuelist[i];
307 atomic_inc(&q->use_count);
308 DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
310 " %5d/%c%c/%c%c%c %5Zd\n",
313 atomic_read(&q->use_count),
314 atomic_read(&q->finalization),
315 atomic_read(&q->block_count),
316 atomic_read(&q->block_read) ? 'r' : '-',
317 atomic_read(&q->block_write) ? 'w' : '-',
318 waitqueue_active(&q->read_queue) ? 'r' : '-',
319 waitqueue_active(&q->
320 write_queue) ? 'w' : '-',
321 waitqueue_active(&q->
322 flush_queue) ? 'f' : '-',
323 DRM_BUFCOUNT(&q->waitlist));
324 atomic_dec(&q->use_count);
327 if (len > request + offset)
334 * Simply calls _queues_info() while holding the drm_device::struct_mutex lock.
336 static int drm_queues_info(char *buf, char **start, off_t offset, int request,
337 int *eof, void *data)
339 drm_device_t *dev = (drm_device_t *) data;
342 mutex_lock(&dev->struct_mutex);
343 ret = drm__queues_info(buf, start, offset, request, eof, data);
344 mutex_unlock(&dev->struct_mutex);
349 * Called when "/proc/dri/.../bufs" is read.
351 * \param buf output buffer.
352 * \param start start of output data.
353 * \param offset requested start offset.
354 * \param request requested number of bytes.
355 * \param eof whether there is no more data to return.
356 * \param data private data.
357 * \return number of written bytes.
359 static int drm__bufs_info(char *buf, char **start, off_t offset, int request,
360 int *eof, void *data)
362 drm_device_t *dev = (drm_device_t *) data;
364 drm_device_dma_t *dma = dev->dma;
367 if (!dma || offset > DRM_PROC_LIMIT) {
372 *start = &buf[offset];
375 DRM_PROC_PRINT(" o size count free segs pages kB\n\n");
376 for (i = 0; i <= DRM_MAX_ORDER; i++) {
377 if (dma->bufs[i].buf_count)
378 DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
380 dma->bufs[i].buf_size,
381 dma->bufs[i].buf_count,
382 atomic_read(&dma->bufs[i]
384 dma->bufs[i].seg_count,
385 dma->bufs[i].seg_count
386 * (1 << dma->bufs[i].page_order),
387 (dma->bufs[i].seg_count
388 * (1 << dma->bufs[i].page_order))
391 DRM_PROC_PRINT("\n");
392 for (i = 0; i < dma->buf_count; i++) {
394 DRM_PROC_PRINT("\n");
395 DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
397 DRM_PROC_PRINT("\n");
399 if (len > request + offset)
406 * Simply calls _bufs_info() while holding the drm_device::struct_mutex lock.
408 static int drm_bufs_info(char *buf, char **start, off_t offset, int request,
409 int *eof, void *data)
411 drm_device_t *dev = (drm_device_t *) data;
414 mutex_lock(&dev->struct_mutex);
415 ret = drm__bufs_info(buf, start, offset, request, eof, data);
416 mutex_unlock(&dev->struct_mutex);
421 * Called when "/proc/dri/.../clients" is read.
423 * \param buf output buffer.
424 * \param start start of output data.
425 * \param offset requested start offset.
426 * \param request requested number of bytes.
427 * \param eof whether there is no more data to return.
428 * \param data private data.
429 * \return number of written bytes.
431 static int drm__clients_info(char *buf, char **start, off_t offset,
432 int request, int *eof, void *data)
434 drm_device_t *dev = (drm_device_t *) data;
438 if (offset > DRM_PROC_LIMIT) {
443 *start = &buf[offset];
446 DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
447 for (priv = dev->file_first; priv; priv = priv->next) {
448 DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
449 priv->authenticated ? 'y' : 'n',
452 priv->uid, priv->magic, priv->ioctl_count);
455 if (len > request + offset)
462 * Simply calls _clients_info() while holding the drm_device::struct_mutex lock.
464 static int drm_clients_info(char *buf, char **start, off_t offset,
465 int request, int *eof, void *data)
467 drm_device_t *dev = (drm_device_t *) data;
470 mutex_lock(&dev->struct_mutex);
471 ret = drm__clients_info(buf, start, offset, request, eof, data);
472 mutex_unlock(&dev->struct_mutex);
478 static int drm__vma_info(char *buf, char **start, off_t offset, int request,
479 int *eof, void *data)
481 drm_device_t *dev = (drm_device_t *) data;
484 struct vm_area_struct *vma;
485 #if defined(__i386__)
489 if (offset > DRM_PROC_LIMIT) {
494 *start = &buf[offset];
497 DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
498 atomic_read(&dev->vma_count),
499 high_memory, virt_to_phys(high_memory));
500 for (pt = dev->vmalist; pt; pt = pt->next) {
501 if (!(vma = pt->vma))
503 DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
507 vma->vm_flags & VM_READ ? 'r' : '-',
508 vma->vm_flags & VM_WRITE ? 'w' : '-',
509 vma->vm_flags & VM_EXEC ? 'x' : '-',
510 vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
511 vma->vm_flags & VM_LOCKED ? 'l' : '-',
512 vma->vm_flags & VM_IO ? 'i' : '-',
513 vma->vm_pgoff << PAGE_SHIFT);
515 #if defined(__i386__)
516 pgprot = pgprot_val(vma->vm_page_prot);
517 DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
518 pgprot & _PAGE_PRESENT ? 'p' : '-',
519 pgprot & _PAGE_RW ? 'w' : 'r',
520 pgprot & _PAGE_USER ? 'u' : 's',
521 pgprot & _PAGE_PWT ? 't' : 'b',
522 pgprot & _PAGE_PCD ? 'u' : 'c',
523 pgprot & _PAGE_ACCESSED ? 'a' : '-',
524 pgprot & _PAGE_DIRTY ? 'd' : '-',
525 pgprot & _PAGE_PSE ? 'm' : 'k',
526 pgprot & _PAGE_GLOBAL ? 'g' : 'l');
528 DRM_PROC_PRINT("\n");
531 if (len > request + offset)
537 static int drm_vma_info(char *buf, char **start, off_t offset, int request,
538 int *eof, void *data)
540 drm_device_t *dev = (drm_device_t *) data;
543 mutex_lock(&dev->struct_mutex);
544 ret = drm__vma_info(buf, start, offset, request, eof, data);
545 mutex_unlock(&dev->struct_mutex);