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
},
66 { "vm", drm_vm_info
},
67 { "clients", drm_clients_info
},
68 { "queues", drm_queues_info
},
69 { "bufs", drm_bufs_info
},
71 { "vma", drm_vma_info
},
74 #define DRM_PROC_ENTRIES (sizeof(drm_proc_list)/sizeof(drm_proc_list[0]))
77 * Initialize the DRI proc filesystem for a device.
79 * \param dev DRM device.
80 * \param minor device minor number.
81 * \param root DRI proc dir entry.
82 * \param dev_root resulting DRI device proc dir entry.
83 * \return root entry pointer on success, or NULL on failure.
85 * Create the DRI proc root entry "/proc/dri", the device proc root entry
86 * "/proc/dri/%minor%/", and each entry in proc_list as
87 * "/proc/dri/%minor%/%name%".
89 int drm_proc_init(drm_device_t
*dev
, int minor
,
90 struct proc_dir_entry
*root
,
91 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
;
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(int minor
, struct proc_dir_entry
*root
,
135 struct proc_dir_entry
*dev_root
)
140 if (!root
|| !dev_root
) return 0;
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
, pci_name(dev
->pdev
), dev
->unique
);
181 DRM_PROC_PRINT("%s %s\n", dev
->driver
->pci_driver
.name
, pci_name(dev
->pdev
));
184 if (len
> request
+ offset
) return request
;
190 * Called when "/proc/dri/.../vm" is read.
192 * \param buf output buffer.
193 * \param start start of output data.
194 * \param offset requested start offset.
195 * \param request requested number of bytes.
196 * \param eof whether there is no more data to return.
197 * \param data private data.
198 * \return number of written bytes.
200 * Prints information about all mappings in drm_device::maplist.
202 static int drm__vm_info(char *buf
, char **start
, off_t offset
, int request
,
203 int *eof
, void *data
)
205 drm_device_t
*dev
= (drm_device_t
*)data
;
208 drm_map_list_t
*r_list
;
209 struct list_head
*list
;
211 /* Hardcoded from _DRM_FRAME_BUFFER,
212 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
213 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
214 const char *types
[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
218 if (offset
> DRM_PROC_LIMIT
) {
223 *start
= &buf
[offset
];
226 DRM_PROC_PRINT("slot offset size type flags "
229 if (dev
->maplist
!= NULL
) list_for_each(list
, &dev
->maplist
->head
) {
230 r_list
= list_entry(list
, drm_map_list_t
, head
);
234 if (map
->type
< 0 || map
->type
> 5)
237 type
= types
[map
->type
];
238 DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
246 DRM_PROC_PRINT("none\n");
248 DRM_PROC_PRINT("%4d\n", map
->mtrr
);
253 if (len
> request
+ offset
) return request
;
259 * Simply calls _vm_info() while holding the drm_device::struct_sem lock.
261 static int drm_vm_info(char *buf
, char **start
, off_t offset
, int request
,
262 int *eof
, void *data
)
264 drm_device_t
*dev
= (drm_device_t
*)data
;
267 down(&dev
->struct_sem
);
268 ret
= drm__vm_info(buf
, start
, offset
, request
, eof
, data
);
269 up(&dev
->struct_sem
);
274 * Called when "/proc/dri/.../queues" is read.
276 * \param buf output buffer.
277 * \param start start of output data.
278 * \param offset requested start offset.
279 * \param request requested number of bytes.
280 * \param eof whether there is no more data to return.
281 * \param data private data.
282 * \return number of written bytes.
284 static int drm__queues_info(char *buf
, char **start
, off_t offset
,
285 int request
, int *eof
, void *data
)
287 drm_device_t
*dev
= (drm_device_t
*)data
;
292 if (offset
> DRM_PROC_LIMIT
) {
297 *start
= &buf
[offset
];
300 DRM_PROC_PRINT(" ctx/flags use fin"
301 " blk/rw/rwf wait flushed queued"
303 for (i
= 0; i
< dev
->queue_count
; i
++) {
304 q
= dev
->queuelist
[i
];
305 atomic_inc(&q
->use_count
);
306 DRM_PROC_PRINT_RET(atomic_dec(&q
->use_count
),
308 " %5d/%c%c/%c%c%c %5Zd\n",
311 atomic_read(&q
->use_count
),
312 atomic_read(&q
->finalization
),
313 atomic_read(&q
->block_count
),
314 atomic_read(&q
->block_read
) ? 'r' : '-',
315 atomic_read(&q
->block_write
) ? 'w' : '-',
316 waitqueue_active(&q
->read_queue
) ? 'r':'-',
317 waitqueue_active(&q
->write_queue
) ? 'w':'-',
318 waitqueue_active(&q
->flush_queue
) ? 'f':'-',
319 DRM_BUFCOUNT(&q
->waitlist
));
320 atomic_dec(&q
->use_count
);
323 if (len
> request
+ offset
) return request
;
329 * Simply calls _queues_info() while holding the drm_device::struct_sem lock.
331 static int drm_queues_info(char *buf
, char **start
, off_t offset
, int request
,
332 int *eof
, void *data
)
334 drm_device_t
*dev
= (drm_device_t
*)data
;
337 down(&dev
->struct_sem
);
338 ret
= drm__queues_info(buf
, start
, offset
, request
, eof
, data
);
339 up(&dev
->struct_sem
);
344 * Called when "/proc/dri/.../bufs" is read.
346 * \param buf output buffer.
347 * \param start start of output data.
348 * \param offset requested start offset.
349 * \param request requested number of bytes.
350 * \param eof whether there is no more data to return.
351 * \param data private data.
352 * \return number of written bytes.
354 static int drm__bufs_info(char *buf
, char **start
, off_t offset
, int request
,
355 int *eof
, void *data
)
357 drm_device_t
*dev
= (drm_device_t
*)data
;
359 drm_device_dma_t
*dma
= dev
->dma
;
362 if (!dma
|| offset
> DRM_PROC_LIMIT
) {
367 *start
= &buf
[offset
];
370 DRM_PROC_PRINT(" o size count free segs pages kB\n\n");
371 for (i
= 0; i
<= DRM_MAX_ORDER
; i
++) {
372 if (dma
->bufs
[i
].buf_count
)
373 DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
375 dma
->bufs
[i
].buf_size
,
376 dma
->bufs
[i
].buf_count
,
377 atomic_read(&dma
->bufs
[i
]
379 dma
->bufs
[i
].seg_count
,
380 dma
->bufs
[i
].seg_count
381 *(1 << dma
->bufs
[i
].page_order
),
382 (dma
->bufs
[i
].seg_count
383 * (1 << dma
->bufs
[i
].page_order
))
386 DRM_PROC_PRINT("\n");
387 for (i
= 0; i
< dma
->buf_count
; i
++) {
388 if (i
&& !(i
%32)) DRM_PROC_PRINT("\n");
389 DRM_PROC_PRINT(" %d", dma
->buflist
[i
]->list
);
391 DRM_PROC_PRINT("\n");
393 if (len
> request
+ offset
) return request
;
399 * Simply calls _bufs_info() while holding the drm_device::struct_sem lock.
401 static int drm_bufs_info(char *buf
, char **start
, off_t offset
, int request
,
402 int *eof
, void *data
)
404 drm_device_t
*dev
= (drm_device_t
*)data
;
407 down(&dev
->struct_sem
);
408 ret
= drm__bufs_info(buf
, start
, offset
, request
, eof
, data
);
409 up(&dev
->struct_sem
);
414 * Called when "/proc/dri/.../clients" is read.
416 * \param buf output buffer.
417 * \param start start of output data.
418 * \param offset requested start offset.
419 * \param request requested number of bytes.
420 * \param eof whether there is no more data to return.
421 * \param data private data.
422 * \return number of written bytes.
424 static int drm__clients_info(char *buf
, char **start
, off_t offset
,
425 int request
, int *eof
, void *data
)
427 drm_device_t
*dev
= (drm_device_t
*)data
;
431 if (offset
> DRM_PROC_LIMIT
) {
436 *start
= &buf
[offset
];
439 DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
440 for (priv
= dev
->file_first
; priv
; priv
= priv
->next
) {
441 DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
442 priv
->authenticated
? 'y' : 'n',
450 if (len
> request
+ offset
) return request
;
456 * Simply calls _clients_info() while holding the drm_device::struct_sem lock.
458 static int drm_clients_info(char *buf
, char **start
, off_t offset
,
459 int request
, int *eof
, void *data
)
461 drm_device_t
*dev
= (drm_device_t
*)data
;
464 down(&dev
->struct_sem
);
465 ret
= drm__clients_info(buf
, start
, offset
, request
, eof
, data
);
466 up(&dev
->struct_sem
);
472 static int drm__vma_info(char *buf
, char **start
, off_t offset
, int request
,
473 int *eof
, void *data
)
475 drm_device_t
*dev
= (drm_device_t
*)data
;
478 struct vm_area_struct
*vma
;
479 #if defined(__i386__)
483 if (offset
> DRM_PROC_LIMIT
) {
488 *start
= &buf
[offset
];
491 DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
492 atomic_read(&dev
->vma_count
),
493 high_memory
, virt_to_phys(high_memory
));
494 for (pt
= dev
->vmalist
; pt
; pt
= pt
->next
) {
495 if (!(vma
= pt
->vma
)) continue;
496 DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
500 vma
->vm_flags
& VM_READ
? 'r' : '-',
501 vma
->vm_flags
& VM_WRITE
? 'w' : '-',
502 vma
->vm_flags
& VM_EXEC
? 'x' : '-',
503 vma
->vm_flags
& VM_MAYSHARE
? 's' : 'p',
504 vma
->vm_flags
& VM_LOCKED
? 'l' : '-',
505 vma
->vm_flags
& VM_IO
? 'i' : '-',
508 #if defined(__i386__)
509 pgprot
= pgprot_val(vma
->vm_page_prot
);
510 DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
511 pgprot
& _PAGE_PRESENT
? 'p' : '-',
512 pgprot
& _PAGE_RW
? 'w' : 'r',
513 pgprot
& _PAGE_USER
? 'u' : 's',
514 pgprot
& _PAGE_PWT
? 't' : 'b',
515 pgprot
& _PAGE_PCD
? 'u' : 'c',
516 pgprot
& _PAGE_ACCESSED
? 'a' : '-',
517 pgprot
& _PAGE_DIRTY
? 'd' : '-',
518 pgprot
& _PAGE_PSE
? 'm' : 'k',
519 pgprot
& _PAGE_GLOBAL
? 'g' : 'l' );
521 DRM_PROC_PRINT("\n");
524 if (len
> request
+ offset
) return request
;
529 static int drm_vma_info(char *buf
, char **start
, off_t offset
, int request
,
530 int *eof
, void *data
)
532 drm_device_t
*dev
= (drm_device_t
*)data
;
535 down(&dev
->struct_sem
);
536 ret
= drm__vma_info(buf
, start
, offset
, request
, eof
, data
);
537 up(&dev
->struct_sem
);