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;
123 * Cleanup the proc filesystem resources.
125 * \param minor device minor number.
126 * \param root DRI proc dir entry.
127 * \param dev_root DRI device proc dir entry.
128 * \return always zero.
130 * Remove all proc entries created by proc_init().
132 int drm_proc_cleanup(int minor, struct proc_dir_entry *root,
133 struct proc_dir_entry *dev_root)
138 if (!root || !dev_root)
141 for (i = 0; i < DRM_PROC_ENTRIES; i++)
142 remove_proc_entry(drm_proc_list[i].name, dev_root);
143 sprintf(name, "%d", minor);
144 remove_proc_entry(name, root);
150 * Called when "/proc/dri/.../name" is read.
152 * \param buf output buffer.
153 * \param start start of output data.
154 * \param offset requested start offset.
155 * \param request requested number of bytes.
156 * \param eof whether there is no more data to return.
157 * \param data private data.
158 * \return number of written bytes.
160 * Prints the device name together with the bus id if available.
162 static int drm_name_info(char *buf, char **start, off_t offset, int request,
163 int *eof, void *data)
165 drm_device_t *dev = (drm_device_t *) data;
168 if (offset > DRM_PROC_LIMIT) {
173 *start = &buf[offset];
177 DRM_PROC_PRINT("%s %s %s\n",
178 dev->driver->pci_driver.name, pci_name(dev->pdev),
181 DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name,
182 pci_name(dev->pdev));
185 if (len > request + offset)
192 * Called when "/proc/dri/.../vm" is read.
194 * \param buf output buffer.
195 * \param start start of output data.
196 * \param offset requested start offset.
197 * \param request requested number of bytes.
198 * \param eof whether there is no more data to return.
199 * \param data private data.
200 * \return number of written bytes.
202 * Prints information about all mappings in drm_device::maplist.
204 static int drm__vm_info(char *buf, char **start, off_t offset, int request,
205 int *eof, void *data)
207 drm_device_t *dev = (drm_device_t *) data;
210 drm_map_list_t *r_list;
211 struct list_head *list;
213 /* Hardcoded from _DRM_FRAME_BUFFER,
214 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP,
215 _DRM_SCATTER_GATHER, and _DRM_CONSISTENT. */
216 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
220 if (offset > DRM_PROC_LIMIT) {
225 *start = &buf[offset];
228 DRM_PROC_PRINT("slot offset size type flags "
231 if (dev->maplist != NULL)
232 list_for_each(list, &dev->maplist->head) {
233 r_list = list_entry(list, drm_map_list_t, 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%08x ",
249 DRM_PROC_PRINT("none\n");
251 DRM_PROC_PRINT("%4d\n", map->mtrr);
256 if (len > request + offset)
263 * Simply calls _vm_info() while holding the drm_device::struct_sem lock.
265 static int drm_vm_info(char *buf, char **start, off_t offset, int request,
266 int *eof, void *data)
268 drm_device_t *dev = (drm_device_t *) data;
271 down(&dev->struct_sem);
272 ret = drm__vm_info(buf, start, offset, request, eof, data);
273 up(&dev->struct_sem);
278 * Called when "/proc/dri/.../queues" is read.
280 * \param buf output buffer.
281 * \param start start of output data.
282 * \param offset requested start offset.
283 * \param request requested number of bytes.
284 * \param eof whether there is no more data to return.
285 * \param data private data.
286 * \return number of written bytes.
288 static int drm__queues_info(char *buf, char **start, off_t offset,
289 int request, int *eof, void *data)
291 drm_device_t *dev = (drm_device_t *) data;
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_sem lock.
338 static int drm_queues_info(char *buf, char **start, off_t offset, int request,
339 int *eof, void *data)
341 drm_device_t *dev = (drm_device_t *) data;
344 down(&dev->struct_sem);
345 ret = drm__queues_info(buf, start, offset, request, eof, data);
346 up(&dev->struct_sem);
351 * Called when "/proc/dri/.../bufs" is read.
353 * \param buf output buffer.
354 * \param start start of output data.
355 * \param offset requested start offset.
356 * \param request requested number of bytes.
357 * \param eof whether there is no more data to return.
358 * \param data private data.
359 * \return number of written bytes.
361 static int drm__bufs_info(char *buf, char **start, off_t offset, int request,
362 int *eof, void *data)
364 drm_device_t *dev = (drm_device_t *) data;
366 drm_device_dma_t *dma = dev->dma;
369 if (!dma || offset > DRM_PROC_LIMIT) {
374 *start = &buf[offset];
377 DRM_PROC_PRINT(" o size count free segs pages kB\n\n");
378 for (i = 0; i <= DRM_MAX_ORDER; i++) {
379 if (dma->bufs[i].buf_count)
380 DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
382 dma->bufs[i].buf_size,
383 dma->bufs[i].buf_count,
384 atomic_read(&dma->bufs[i]
386 dma->bufs[i].seg_count,
387 dma->bufs[i].seg_count
388 * (1 << dma->bufs[i].page_order),
389 (dma->bufs[i].seg_count
390 * (1 << dma->bufs[i].page_order))
393 DRM_PROC_PRINT("\n");
394 for (i = 0; i < dma->buf_count; i++) {
396 DRM_PROC_PRINT("\n");
397 DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
399 DRM_PROC_PRINT("\n");
401 if (len > request + offset)
408 * Simply calls _bufs_info() while holding the drm_device::struct_sem lock.
410 static int drm_bufs_info(char *buf, char **start, off_t offset, int request,
411 int *eof, void *data)
413 drm_device_t *dev = (drm_device_t *) data;
416 down(&dev->struct_sem);
417 ret = drm__bufs_info(buf, start, offset, request, eof, data);
418 up(&dev->struct_sem);
423 * Called when "/proc/dri/.../clients" is read.
425 * \param buf output buffer.
426 * \param start start of output data.
427 * \param offset requested start offset.
428 * \param request requested number of bytes.
429 * \param eof whether there is no more data to return.
430 * \param data private data.
431 * \return number of written bytes.
433 static int drm__clients_info(char *buf, char **start, off_t offset,
434 int request, int *eof, void *data)
436 drm_device_t *dev = (drm_device_t *) data;
440 if (offset > DRM_PROC_LIMIT) {
445 *start = &buf[offset];
448 DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
449 for (priv = dev->file_first; priv; priv = priv->next) {
450 DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
451 priv->authenticated ? 'y' : 'n',
454 priv->uid, priv->magic, priv->ioctl_count);
457 if (len > request + offset)
464 * Simply calls _clients_info() while holding the drm_device::struct_sem lock.
466 static int drm_clients_info(char *buf, char **start, off_t offset,
467 int request, int *eof, void *data)
469 drm_device_t *dev = (drm_device_t *) data;
472 down(&dev->struct_sem);
473 ret = drm__clients_info(buf, start, offset, request, eof, data);
474 up(&dev->struct_sem);
480 static int drm__vma_info(char *buf, char **start, off_t offset, int request,
481 int *eof, void *data)
483 drm_device_t *dev = (drm_device_t *) data;
486 struct vm_area_struct *vma;
487 #if defined(__i386__)
491 if (offset > DRM_PROC_LIMIT) {
496 *start = &buf[offset];
499 DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
500 atomic_read(&dev->vma_count),
501 high_memory, virt_to_phys(high_memory));
502 for (pt = dev->vmalist; pt; pt = pt->next) {
503 if (!(vma = pt->vma))
505 DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
509 vma->vm_flags & VM_READ ? 'r' : '-',
510 vma->vm_flags & VM_WRITE ? 'w' : '-',
511 vma->vm_flags & VM_EXEC ? 'x' : '-',
512 vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
513 vma->vm_flags & VM_LOCKED ? 'l' : '-',
514 vma->vm_flags & VM_IO ? 'i' : '-',
517 #if defined(__i386__)
518 pgprot = pgprot_val(vma->vm_page_prot);
519 DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
520 pgprot & _PAGE_PRESENT ? 'p' : '-',
521 pgprot & _PAGE_RW ? 'w' : 'r',
522 pgprot & _PAGE_USER ? 'u' : 's',
523 pgprot & _PAGE_PWT ? 't' : 'b',
524 pgprot & _PAGE_PCD ? 'u' : 'c',
525 pgprot & _PAGE_ACCESSED ? 'a' : '-',
526 pgprot & _PAGE_DIRTY ? 'd' : '-',
527 pgprot & _PAGE_PSE ? 'm' : 'k',
528 pgprot & _PAGE_GLOBAL ? 'g' : 'l');
530 DRM_PROC_PRINT("\n");
533 if (len > request + offset)
539 static int drm_vma_info(char *buf, char **start, off_t offset, int request,
540 int *eof, void *data)
542 drm_device_t *dev = (drm_device_t *) data;
545 down(&dev->struct_sem);
546 ret = drm__vma_info(buf, start, offset, request, eof, data);
547 up(&dev->struct_sem);