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*/
65 "name", drm_name_info
}, {
66 "mem", drm_mem_info
}, {
68 "clients", drm_clients_info
}, {
69 "queues", drm_queues_info
}, {
70 "bufs", drm_bufs_info
},
77 #define DRM_PROC_ENTRIES (sizeof(drm_proc_list)/sizeof(drm_proc_list[0]))
80 * Initialize the DRI proc filesystem for a device.
82 * \param dev DRM device.
83 * \param minor device minor number.
84 * \param root DRI proc dir entry.
85 * \param dev_root resulting DRI device proc dir entry.
86 * \return root entry pointer on success, or NULL on failure.
88 * Create the DRI proc root entry "/proc/dri", the device proc root entry
89 * "/proc/dri/%minor%/", and each entry in proc_list as
90 * "/proc/dri/%minor%/%name%".
92 int drm_proc_init(drm_device_t
* dev
, int minor
,
93 struct proc_dir_entry
*root
, struct proc_dir_entry
**dev_root
)
95 struct proc_dir_entry
*ent
;
99 sprintf(name
, "%d", minor
);
100 *dev_root
= proc_mkdir(name
, root
);
102 DRM_ERROR("Cannot create /proc/dri/%s\n", name
);
106 for (i
= 0; i
< DRM_PROC_ENTRIES
; i
++) {
107 ent
= create_proc_entry(drm_proc_list
[i
].name
,
108 S_IFREG
| S_IRUGO
, *dev_root
);
110 DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
111 name
, drm_proc_list
[i
].name
);
112 for (j
= 0; j
< i
; j
++)
113 remove_proc_entry(drm_proc_list
[i
].name
,
115 remove_proc_entry(name
, root
);
118 ent
->read_proc
= drm_proc_list
[i
].f
;
126 * Cleanup the proc filesystem resources.
128 * \param minor device minor number.
129 * \param root DRI proc dir entry.
130 * \param dev_root DRI device proc dir entry.
131 * \return always zero.
133 * Remove all proc entries created by proc_init().
135 int drm_proc_cleanup(int minor
, struct proc_dir_entry
*root
,
136 struct proc_dir_entry
*dev_root
)
141 if (!root
|| !dev_root
)
144 for (i
= 0; i
< DRM_PROC_ENTRIES
; i
++)
145 remove_proc_entry(drm_proc_list
[i
].name
, dev_root
);
146 sprintf(name
, "%d", minor
);
147 remove_proc_entry(name
, root
);
153 * Called when "/proc/dri/.../name" is read.
155 * \param buf output buffer.
156 * \param start start of output data.
157 * \param offset requested start offset.
158 * \param request requested number of bytes.
159 * \param eof whether there is no more data to return.
160 * \param data private data.
161 * \return number of written bytes.
163 * Prints the device name together with the bus id if available.
165 static int drm_name_info(char *buf
, char **start
, off_t offset
, int request
,
166 int *eof
, void *data
)
168 drm_device_t
*dev
= (drm_device_t
*) data
;
171 if (offset
> DRM_PROC_LIMIT
) {
176 *start
= &buf
[offset
];
180 DRM_PROC_PRINT("%s %s %s\n",
181 dev
->driver
->pci_driver
.name
,
182 pci_name(dev
->pdev
), dev
->unique
);
184 DRM_PROC_PRINT("%s %s\n", dev
->driver
->pci_driver
.name
,
185 pci_name(dev
->pdev
));
188 if (len
> request
+ offset
)
195 * Called when "/proc/dri/.../vm" is read.
197 * \param buf output buffer.
198 * \param start start of output data.
199 * \param offset requested start offset.
200 * \param request requested number of bytes.
201 * \param eof whether there is no more data to return.
202 * \param data private data.
203 * \return number of written bytes.
205 * Prints information about all mappings in drm_device::maplist.
207 static int drm__vm_info(char *buf
, char **start
, off_t offset
, int request
,
208 int *eof
, void *data
)
210 drm_device_t
*dev
= (drm_device_t
*) data
;
213 drm_map_list_t
*r_list
;
214 struct list_head
*list
;
216 /* Hardcoded from _DRM_FRAME_BUFFER,
217 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
218 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
219 const char *types
[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
223 if (offset
> DRM_PROC_LIMIT
) {
228 *start
= &buf
[offset
];
231 DRM_PROC_PRINT("slot offset size type flags "
234 if (dev
->maplist
!= NULL
)
235 list_for_each(list
, &dev
->maplist
->head
) {
236 r_list
= list_entry(list
, drm_map_list_t
, head
);
240 if (map
->type
< 0 || map
->type
> 5)
243 type
= types
[map
->type
];
244 DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
247 map
->size
, type
, map
->flags
, r_list
->user_token
);
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
);