/************************************************************************** * * Copyright 2006 Tungsten Graphics, Inc., Bismarck., ND., USA. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * **************************************************************************/ /* * Simple memory manager interface that keeps track on allocate regions on a * per "owner" basis. All regions associated with an "owner" can be released * with a simple call. Typically if the "owner" exists. The owner is any * "unsigned long" identifier. Can typically be a pointer to a file private * struct or a context identifier. * * Authors: * Thomas Hellström */ #include "drm_sman.h" struct drm_owner_item { struct drm_hash_item owner_hash; struct list_head sman_list; struct list_head mem_blocks; }; void drm_sman_takedown(struct drm_sman * sman) { drm_ht_remove(&sman->user_hash_tab); drm_ht_remove(&sman->owner_hash_tab); if (sman->mm) drm_free(sman->mm, sman->num_managers * sizeof(*sman->mm), DRM_MEM_MM); } EXPORT_SYMBOL(drm_sman_takedown); int drm_sman_init(struct drm_sman * sman, unsigned int num_managers, unsigned int user_order, unsigned int owner_order) { int ret = 0; sman->mm = (struct drm_sman_mm *) drm_calloc(num_managers, sizeof(*sman->mm), DRM_MEM_MM); if (!sman->mm) { ret = -ENOMEM; goto out; } sman->num_managers = num_managers; INIT_LIST_HEAD(&sman->owner_items); ret = drm_ht_create(&sman->owner_hash_tab, owner_order); if (ret) goto out1; ret = drm_ht_create(&sman->user_hash_tab, user_order); if (!ret) goto out; drm_ht_remove(&sman->owner_hash_tab); out1: drm_free(sman->mm, num_managers * sizeof(*sman->mm), DRM_MEM_MM); out: return ret; } EXPORT_SYMBOL(drm_sman_init); static void *drm_sman_mm_allocate(void *private, unsigned long size, unsigned alignment) { struct drm_memrange *mm = (struct drm_memrange *) private; struct drm_memrange_node *tmp; tmp = drm_memrange_search_free(mm, size, alignment, 1); if (!tmp) { return NULL; } tmp = drm_memrange_get_block(tmp, size, alignment); return tmp; } static void drm_sman_mm_free(void *private, void *ref) { struct drm_memrange_node *node = (struct drm_memrange_node *) ref; drm_memrange_put_block(node); } static void drm_sman_mm_destroy(void *private) { struct drm_memrange *mm = (struct drm_memrange *) private; drm_memrange_takedown(mm); drm_free(mm, sizeof(*mm), DRM_MEM_MM); } static unsigned long drm_sman_mm_offset(void *private, void *ref) { struct drm_memrange_node *node = (struct drm_memrange_node *) ref; return node->start; } int drm_sman_set_range(struct drm_sman * sman, unsigned int manager, unsigned long start, unsigned long size) { struct drm_sman_mm *sman_mm; struct drm_memrange *mm; int ret; BUG_ON(manager >= sman->num_managers); sman_mm = &sman->mm[manager]; mm = drm_calloc(1, sizeof(*mm), DRM_MEM_MM); if (!mm) { return -ENOMEM; } sman_mm->private = mm; ret = drm_memrange_init(mm, start, size); if (ret) { drm_free(mm, sizeof(*mm), DRM_MEM_MM); return ret; } sman_mm->allocate = drm_sman_mm_allocate; sman_mm->free = drm_sman_mm_free; sman_mm->destroy = drm_sman_mm_destroy; sman_mm->offset = drm_sman_mm_offset; return 0; } EXPORT_SYMBOL(drm_sman_set_range); int drm_sman_set_manager(struct drm_sman * sman, unsigned int manager, struct drm_sman_mm * allocator) { BUG_ON(manager >= sman->num_managers); sman->mm[manager] = *allocator; return 0; } EXPORT_SYMBOL(drm_sman_set_manager); static struct drm_owner_item *drm_sman_get_owner_item(struct drm_sman * sman, unsigned long owner) { int ret; struct drm_hash_item *owner_hash_item; struct drm_owner_item *owner_item; ret = drm_ht_find_item(&sman->owner_hash_tab, owner, &owner_hash_item); if (!ret) { return drm_hash_entry(owner_hash_item, struct drm_owner_item, owner_hash); } owner_item = drm_calloc(1, sizeof(*owner_item), DRM_MEM_MM); if (!owner_item) goto out; INIT_LIST_HEAD(&owner_item->mem_blocks); owner_item->owner_hash.key = owner; if (drm_ht_insert_item(&sman->owner_hash_tab, &owner_item->owner_hash)) goto out1; list_add_tail(&owner_item->sman_list, &sman->owner_items); return owner_item; out1: drm_free(owner_item, sizeof(*owner_item), DRM_MEM_MM); out: return NULL; } struct drm_memblock_item *drm_sman_alloc(struct drm_sman *sman, unsigned int manager, unsigned long size, unsigned alignment, unsigned long owner) { void *tmp; struct drm_sman_mm *sman_mm; struct drm_owner_item *owner_item; struct drm_memblock_item *memblock; BUG_ON(manager >= sman->num_managers); sman_mm = &sman->mm[manager]; tmp = sman_mm->allocate(sman_mm->private, size, alignment); if (!tmp) { return NULL; } memblock = drm_calloc(1, sizeof(*memblock), DRM_MEM_MM); if (!memblock) goto out; memblock->mm_info = tmp; memblock->mm = sman_mm; memblock->sman = sman; if (drm_ht_just_insert_please (&sman->user_hash_tab, &memblock->user_hash, (unsigned long)memblock, 32, 0, 0)) goto out1; owner_item = drm_sman_get_owner_item(sman, owner); if (!owner_item) goto out2; list_add_tail(&memblock->owner_list, &owner_item->mem_blocks); return memblock; out2: drm_ht_remove_item(&sman->user_hash_tab, &memblock->user_hash); out1: drm_free(memblock, sizeof(*memblock), DRM_MEM_MM); out: sman_mm->free(sman_mm->private, tmp); return NULL; } EXPORT_SYMBOL(drm_sman_alloc); static void drm_sman_free(struct drm_memblock_item *item) { struct drm_sman *sman = item->sman; list_del(&item->owner_list); drm_ht_remove_item(&sman->user_hash_tab, &item->user_hash); item->mm->free(item->mm->private, item->mm_info); drm_free(item, sizeof(*item), DRM_MEM_MM); } int drm_sman_free_key(struct drm_sman *sman, unsigned int key) { struct drm_hash_item *hash_item; struct drm_memblock_item *memblock_item; if (drm_ht_find_item(&sman->user_hash_tab, key, &hash_item)) return -EINVAL; memblock_item = drm_hash_entry(hash_item, struct drm_memblock_item, user_hash); drm_sman_free(memblock_item); return 0; } EXPORT_SYMBOL(drm_sman_free_key); static void drm_sman_remove_owner(struct drm_sman *sman, struct drm_owner_item *owner_item) { list_del(&owner_item->sman_list); drm_ht_remove_item(&sman->owner_hash_tab, &owner_item->owner_hash); drm_free(owner_item, sizeof(*owner_item), DRM_MEM_MM); } int drm_sman_owner_clean(struct drm_sman *sman, unsigned long owner) { struct drm_hash_item *hash_item; struct drm_owner_item *owner_item; if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) { return -1; } owner_item = drm_hash_entry(hash_item, struct drm_owner_item, owner_hash); if (owner_item->mem_blocks.next == &owner_item->mem_blocks) { drm_sman_remove_owner(sman, owner_item); return -1; } return 0; } EXPORT_SYMBOL(drm_sman_owner_clean); static void drm_sman_do_owner_cleanup(struct drm_sman *sman, struct drm_owner_item *owner_item) { struct drm_memblock_item *entry, *next; list_for_each_entry_safe(entry, next, &owner_item->mem_blocks, owner_list) { drm_sman_free(entry); } drm_sman_remove_owner(sman, owner_item); } void drm_sman_owner_cleanup(struct drm_sman *sman, unsigned long owner) { struct drm_hash_item *hash_item; struct drm_owner_item *owner_item; if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) { return; } owner_item = drm_hash_entry(hash_item, struct drm_owner_item, owner_hash); drm_sman_do_owner_cleanup(sman, owner_item); } EXPORT_SYMBOL(drm_sman_owner_cleanup); void drm_sman_cleanup(struct drm_sman *sman) { struct drm_owner_item *entry, *next; unsigned int i; struct drm_sman_mm *sman_mm; list_for_each_entry_safe(entry, next, &sman->owner_items, sman_list) { drm_sman_do_owner_cleanup(sman, entry); } if (sman->mm) { for (i = 0; i < sman->num_managers; ++i) { sman_mm = &sman->mm[i]; if (sman_mm->private) { sman_mm->destroy(sman_mm->private); sman_mm->private = NULL; } } } } EXPORT_SYMBOL(drm_sman_cleanup); '>192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 
/**
 * \file drm_proc.c
 * /proc support for DRM
 *
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 * \author Gareth Hughes <gareth@valinux.com>
 *
 * \par Acknowledgements:
 *    Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
 *    the problem with the proc files not outputting all their information.
 */

/*
 * Created: Mon Jan 11 09:48:47 1999 by faith@valinux.com
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "drmP.h"

static int drm_name_info(char *buf, char **start, off_t offset,
			 int request, int *eof, void *data);
static int drm_vm_info(char *buf, char **start, off_t offset,
		       int request, int *eof, void *data);
static int drm_clients_info(char *buf, char **start, off_t offset,
			    int request, int *eof, void *data);
static int drm_queues_info(char *buf, char **start, off_t offset,
			   int request, int *eof, void *data);
static int drm_bufs_info(char *buf, char **start, off_t offset,
			 int request, int *eof, void *data);
static int drm_objects_info(char *buf, char **start, off_t offset,
			 int request, int *eof, void *data);
#if DRM_DEBUG_CODE
static int drm_vma_info(char *buf, char **start, off_t offset,
			int request, int *eof, void *data);
#endif

/**
 * Proc file list.
 */
static struct drm_proc_list {
	const char *name;	/**< file name */
	int (*f) (char *, char **, off_t, int, int *, void *);		/**< proc callback*/
} drm_proc_list[] = {
	{"name", drm_name_info},
	{"mem", drm_mem_info},
	{"vm", drm_vm_info},
	{"clients", drm_clients_info},
	{"queues", drm_queues_info},
	{"bufs", drm_bufs_info},
	{"objects", drm_objects_info},
#if DRM_DEBUG_CODE
	{"vma", drm_vma_info},
#endif
};

#define DRM_PROC_ENTRIES ARRAY_SIZE(drm_proc_list)

/**
 * Initialize the DRI proc filesystem for a device.
 *
 * \param dev DRM device.
 * \param minor device minor number.
 * \param root DRI proc dir entry.
 * \param dev_root resulting DRI device proc dir entry.
 * \return root entry pointer on success, or NULL on failure.
 *
 * Create the DRI proc root entry "/proc/dri", the device proc root entry
 * "/proc/dri/%minor%/", and each entry in proc_list as
 * "/proc/dri/%minor%/%name%".
 */
int drm_proc_init(drm_device_t * dev, int minor,
		  struct proc_dir_entry *root, struct proc_dir_entry **dev_root)
{
	struct proc_dir_entry *ent;
	int i, j;
	char name[64];

	sprintf(name, "%d", minor);
	*dev_root = proc_mkdir(name, root);
	if (!*dev_root) {
		DRM_ERROR("Cannot create /proc/dri/%s\n", name);
		return -1;
	}

	for (i = 0; i < DRM_PROC_ENTRIES; i++) {
		ent = create_proc_entry(drm_proc_list[i].name,
					S_IFREG | S_IRUGO, *dev_root);
		if (!ent) {
			DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
				  name, drm_proc_list[i].name);
			for (j = 0; j < i; j++)
				remove_proc_entry(drm_proc_list[i].name,
						  *dev_root);
			remove_proc_entry(name, root);
			return -1;
		}
		ent->read_proc = drm_proc_list[i].f;
		ent->data = dev;
	}
	return 0;
}

/**
 * Cleanup the proc filesystem resources.
 *
 * \param minor device minor number.
 * \param root DRI proc dir entry.
 * \param dev_root DRI device proc dir entry.
 * \return always zero.
 *
 * Remove all proc entries created by proc_init().
 */
int drm_proc_cleanup(int minor, struct proc_dir_entry *root,
		     struct proc_dir_entry *dev_root)
{
	int i;
	char name[64];

	if (!root || !dev_root)
		return 0;

	for (i = 0; i < DRM_PROC_ENTRIES; i++)
		remove_proc_entry(drm_proc_list[i].name, dev_root);
	sprintf(name, "%d", minor);
	remove_proc_entry(name, root);

	return 0;
}

/**
 * Called when "/proc/dri/.../name" is read.
 *
 * \param buf output buffer.
 * \param start start of output data.
 * \param offset requested start offset.
 * \param request requested number of bytes.
 * \param eof whether there is no more data to return.
 * \param data private data.
 * \return number of written bytes.
 *
 * Prints the device name together with the bus id if available.
 */
static int drm_name_info(char *buf, char **start, off_t offset, int request,
			 int *eof, void *data)
{
	drm_device_t *dev = (drm_device_t *) data;
	int len = 0;

	if (offset > DRM_PROC_LIMIT) {
		*eof = 1;
		return 0;
	}

	*start = &buf[offset];
	*eof = 0;

	if (dev->unique) {
		DRM_PROC_PRINT("%s %s %s\n",
			       dev->driver->pci_driver.name,
			       pci_name(dev->pdev), dev->unique);
	} else {