159 	struct dma_pool *pool;  member
308 static int ttm_set_pages_caching(struct dma_pool *pool,  in ttm_set_pages_caching()  argument
313 	if (pool->type & IS_UC) {  in ttm_set_pages_caching()
317 			       pool->dev_name, cpages);  in ttm_set_pages_caching()
319 	if (pool->type & IS_WC) {  in ttm_set_pages_caching()
323 			       pool->dev_name, cpages);  in ttm_set_pages_caching()
328 static void __ttm_dma_free_page(struct dma_pool *pool, struct dma_page *d_page)  in __ttm_dma_free_page()  argument
331 	dma_free_coherent(pool->dev, pool->size, d_page->vaddr, dma);  in __ttm_dma_free_page()
336 static struct dma_page *__ttm_dma_alloc_page(struct dma_pool *pool)  in __ttm_dma_alloc_page()  argument
344 	d_page->vaddr = dma_alloc_coherent(pool->dev, pool->size,  in __ttm_dma_alloc_page()
346 					   pool->gfp_flags);  in __ttm_dma_alloc_page()
371 static void ttm_pool_update_free_locked(struct dma_pool *pool,  in ttm_pool_update_free_locked()  argument
374 	pool->npages_free -= freed_pages;  in ttm_pool_update_free_locked()
375 	pool->nfrees += freed_pages;  in ttm_pool_update_free_locked()
380 static void ttm_dma_pages_put(struct dma_pool *pool, struct list_head *d_pages,  in ttm_dma_pages_put()  argument
386 	if (npages && !(pool->type & IS_CACHED) &&  in ttm_dma_pages_put()
389 		       pool->dev_name, npages);  in ttm_dma_pages_put()
393 		__ttm_dma_free_page(pool, d_page);  in ttm_dma_pages_put()
397 static void ttm_dma_page_put(struct dma_pool *pool, struct dma_page *d_page)  in ttm_dma_page_put()  argument
400 	if (!(pool->type & IS_CACHED) && set_pages_array_wb(&d_page->p, 1))  in ttm_dma_page_put()
402 		       pool->dev_name, 1);  in ttm_dma_page_put()
405 	__ttm_dma_free_page(pool, d_page);  in ttm_dma_page_put()
417 static unsigned ttm_dma_page_pool_free(struct dma_pool *pool, unsigned nr_free)  in ttm_dma_page_pool_free()  argument
431 			 pool->dev_name, pool->name, current->pid,  in ttm_dma_page_pool_free()
440 		       pool->dev_name);  in ttm_dma_page_pool_free()
445 	spin_lock_irqsave(&pool->lock, irq_flags);  in ttm_dma_page_pool_free()
448 	list_for_each_entry_safe_reverse(dma_p, tmp, &pool->free_list,  in ttm_dma_page_pool_free()
460 			ttm_pool_update_free_locked(pool, freed_pages);  in ttm_dma_page_pool_free()
465 			spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_page_pool_free()
467 			ttm_dma_pages_put(pool, &d_pages, pages_to_free,  in ttm_dma_page_pool_free()
497 		ttm_pool_update_free_locked(pool, freed_pages);  in ttm_dma_page_pool_free()
501 	spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_page_pool_free()
504 		ttm_dma_pages_put(pool, &d_pages, pages_to_free, freed_pages);  in ttm_dma_page_pool_free()
513 	struct dma_pool *pool;  in ttm_dma_free_pool()  local
522 		pool = p->pool;  in ttm_dma_free_pool()
523 		if (pool->type != type)  in ttm_dma_free_pool()
531 	list_for_each_entry_reverse(pool, &dev->dma_pools, pools) {  in ttm_dma_free_pool()
532 		if (pool->type != type)  in ttm_dma_free_pool()
535 		ttm_dma_page_pool_free(pool, FREE_ALL_PAGES);  in ttm_dma_free_pool()
536 		WARN_ON(((pool->npages_in_use + pool->npages_free) != 0));  in ttm_dma_free_pool()
541 		list_del(&pool->pools);  in ttm_dma_free_pool()
542 		kfree(pool);  in ttm_dma_free_pool()
554 	struct dma_pool *pool = *(struct dma_pool **)res;  in ttm_dma_pool_release()  local
556 	if (pool)  in ttm_dma_pool_release()
557 		ttm_dma_free_pool(dev, pool->type);  in ttm_dma_pool_release()
571 	struct dma_pool *pool = NULL, **ptr;  in ttm_dma_pool_init()  local
585 	pool = kmalloc_node(sizeof(struct dma_pool), GFP_KERNEL,  in ttm_dma_pool_init()
587 	if (!pool)  in ttm_dma_pool_init()
597 	sec_pool->pool =  pool;  in ttm_dma_pool_init()
599 	INIT_LIST_HEAD(&pool->free_list);  in ttm_dma_pool_init()
600 	INIT_LIST_HEAD(&pool->inuse_list);  in ttm_dma_pool_init()
601 	INIT_LIST_HEAD(&pool->pools);  in ttm_dma_pool_init()
602 	spin_lock_init(&pool->lock);  in ttm_dma_pool_init()
603 	pool->dev = dev;  in ttm_dma_pool_init()
604 	pool->npages_free = pool->npages_in_use = 0;  in ttm_dma_pool_init()
605 	pool->nfrees = 0;  in ttm_dma_pool_init()
606 	pool->gfp_flags = flags;  in ttm_dma_pool_init()
607 	pool->size = PAGE_SIZE;  in ttm_dma_pool_init()
608 	pool->type = type;  in ttm_dma_pool_init()
609 	pool->nrefills = 0;  in ttm_dma_pool_init()
610 	p = pool->name;  in ttm_dma_pool_init()
613 			p += snprintf(p, sizeof(pool->name) - (p - pool->name),  in ttm_dma_pool_init()
620 	snprintf(pool->dev_name, sizeof(pool->dev_name), "%s %s",  in ttm_dma_pool_init()
627 	list_add(&pool->pools, &dev->dma_pools);  in ttm_dma_pool_init()
630 	*ptr = pool;  in ttm_dma_pool_init()
633 	return pool;  in ttm_dma_pool_init()
637 	kfree(pool);  in ttm_dma_pool_init()
644 	struct dma_pool *pool, *tmp, *found = NULL;  in ttm_dma_find_pool()  local
660 	list_for_each_entry_safe(pool, tmp, &dev->dma_pools, pools) {  in ttm_dma_find_pool()
661 		if (pool->type != type)  in ttm_dma_find_pool()
663 		found = pool;  in ttm_dma_find_pool()
674 static void ttm_dma_handle_caching_state_failure(struct dma_pool *pool,  in ttm_dma_handle_caching_state_failure()  argument
692 		__ttm_dma_free_page(pool, d_page);  in ttm_dma_handle_caching_state_failure()
707 static int ttm_dma_pool_alloc_new_pages(struct dma_pool *pool,  in ttm_dma_pool_alloc_new_pages()  argument
724 		       pool->dev_name);  in ttm_dma_pool_alloc_new_pages()
730 			 pool->dev_name, pool->name, current->pid, count);  in ttm_dma_pool_alloc_new_pages()
734 		dma_p = __ttm_dma_alloc_page(pool);  in ttm_dma_pool_alloc_new_pages()
737 			       pool->dev_name, i);  in ttm_dma_pool_alloc_new_pages()
742 				r = ttm_set_pages_caching(pool, caching_array,  in ttm_dma_pool_alloc_new_pages()
746 						pool, d_pages, caching_array,  in ttm_dma_pool_alloc_new_pages()
763 				r = ttm_set_pages_caching(pool, caching_array,  in ttm_dma_pool_alloc_new_pages()
767 						pool, d_pages, caching_array,  in ttm_dma_pool_alloc_new_pages()
778 		r = ttm_set_pages_caching(pool, caching_array, cpages);  in ttm_dma_pool_alloc_new_pages()
780 			ttm_dma_handle_caching_state_failure(pool, d_pages,  in ttm_dma_pool_alloc_new_pages()
791 static int ttm_dma_page_pool_fill_locked(struct dma_pool *pool,  in ttm_dma_page_pool_fill_locked()  argument
795 	int r = pool->npages_free;  in ttm_dma_page_pool_fill_locked()
797 	if (count > pool->npages_free) {  in ttm_dma_page_pool_fill_locked()
802 		spin_unlock_irqrestore(&pool->lock, *irq_flags);  in ttm_dma_page_pool_fill_locked()
806 		r = ttm_dma_pool_alloc_new_pages(pool, &d_pages, count);  in ttm_dma_page_pool_fill_locked()
808 		spin_lock_irqsave(&pool->lock, *irq_flags);  in ttm_dma_page_pool_fill_locked()
811 			list_splice(&d_pages, &pool->free_list);  in ttm_dma_page_pool_fill_locked()
812 			++pool->nrefills;  in ttm_dma_page_pool_fill_locked()
813 			pool->npages_free += count;  in ttm_dma_page_pool_fill_locked()
820 			       pool->dev_name, pool->name, r);  in ttm_dma_page_pool_fill_locked()
825 			list_splice_tail(&d_pages, &pool->free_list);  in ttm_dma_page_pool_fill_locked()
826 			pool->npages_free += cpages;  in ttm_dma_page_pool_fill_locked()
838 static int ttm_dma_pool_get_pages(struct dma_pool *pool,  in ttm_dma_pool_get_pages()  argument
847 	spin_lock_irqsave(&pool->lock, irq_flags);  in ttm_dma_pool_get_pages()
848 	count = ttm_dma_page_pool_fill_locked(pool, &irq_flags);  in ttm_dma_pool_get_pages()
850 		d_page = list_first_entry(&pool->free_list, struct dma_page, page_list);  in ttm_dma_pool_get_pages()
855 		pool->npages_in_use += 1;  in ttm_dma_pool_get_pages()
856 		pool->npages_free -= 1;  in ttm_dma_pool_get_pages()
858 	spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_pool_get_pages()
870 	struct dma_pool *pool;  in ttm_dma_populate()  local
887 	pool = ttm_dma_find_pool(dev, type);  in ttm_dma_populate()
888 	if (!pool) {  in ttm_dma_populate()
889 		pool = ttm_dma_pool_init(dev, gfp_flags, type);  in ttm_dma_populate()
890 		if (IS_ERR_OR_NULL(pool)) {  in ttm_dma_populate()
897 		ret = ttm_dma_pool_get_pages(pool, ttm_dma, i);  in ttm_dma_populate()
932 		total += p->pool->npages_free;  in ttm_dma_pool_get_num_unused_pages()
941 	struct dma_pool *pool;  in ttm_dma_unpopulate()  local
949 	pool = ttm_dma_find_pool(dev, type);  in ttm_dma_unpopulate()
950 	if (!pool)  in ttm_dma_unpopulate()
953 	is_cached = (ttm_dma_find_pool(pool->dev,  in ttm_dma_unpopulate()
954 		     ttm_to_type(ttm->page_flags, tt_cached)) == pool);  in ttm_dma_unpopulate()
962 	spin_lock_irqsave(&pool->lock, irq_flags);  in ttm_dma_unpopulate()
963 	pool->npages_in_use -= count;  in ttm_dma_unpopulate()
965 		pool->nfrees += count;  in ttm_dma_unpopulate()
967 		pool->npages_free += count;  in ttm_dma_unpopulate()
968 		list_splice(&ttm_dma->pages_list, &pool->free_list);  in ttm_dma_unpopulate()
970 		if (pool->npages_free > _manager->options.max_size) {  in ttm_dma_unpopulate()
971 			npages = pool->npages_free - _manager->options.max_size;  in ttm_dma_unpopulate()
978 	spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_unpopulate()
984 			ttm_dma_page_put(pool, d_page);  in ttm_dma_unpopulate()
1001 		ttm_dma_page_pool_free(pool, npages);  in ttm_dma_unpopulate()
1034 		shrink_pages = ttm_dma_page_pool_free(p->pool, nr_free);  in ttm_dma_pool_mm_shrink()
1036 			 p->pool->dev_name, p->pool->name, current->pid,  in ttm_dma_pool_mm_shrink()
1096 		dev_dbg(p->dev, "(%s:%d) Freeing.\n", p->pool->name,  in ttm_dma_page_alloc_fini()
1099 			ttm_dma_pool_match, p->pool));  in ttm_dma_page_alloc_fini()
1100 		ttm_dma_free_pool(p->dev, p->pool->type);  in ttm_dma_page_alloc_fini()
1109 	struct dma_pool *pool = NULL;  in ttm_dma_page_alloc_debugfs()  local
1124 		pool = p->pool;  in ttm_dma_page_alloc_debugfs()
1126 				pool->name, pool->nrefills,  in ttm_dma_page_alloc_debugfs()
1127 				pool->nfrees, pool->npages_in_use,  in ttm_dma_page_alloc_debugfs()
1128 				pool->npages_free,  in ttm_dma_page_alloc_debugfs()
1129 				pool->dev_name);  in ttm_dma_page_alloc_debugfs()