157 	struct dma_pool *pool;  member
306 static int ttm_set_pages_caching(struct dma_pool *pool,  in ttm_set_pages_caching()  argument
311 	if (pool->type & IS_UC) {  in ttm_set_pages_caching()
315 			       pool->dev_name, cpages);  in ttm_set_pages_caching()
317 	if (pool->type & IS_WC) {  in ttm_set_pages_caching()
321 			       pool->dev_name, cpages);  in ttm_set_pages_caching()
326 static void __ttm_dma_free_page(struct dma_pool *pool, struct dma_page *d_page)  in __ttm_dma_free_page()  argument
329 	dma_free_coherent(pool->dev, pool->size, d_page->vaddr, dma);  in __ttm_dma_free_page()
334 static struct dma_page *__ttm_dma_alloc_page(struct dma_pool *pool)  in __ttm_dma_alloc_page()  argument
342 	d_page->vaddr = dma_alloc_coherent(pool->dev, pool->size,  in __ttm_dma_alloc_page()
344 					   pool->gfp_flags);  in __ttm_dma_alloc_page()
369 static void ttm_pool_update_free_locked(struct dma_pool *pool,  in ttm_pool_update_free_locked()  argument
372 	pool->npages_free -= freed_pages;  in ttm_pool_update_free_locked()
373 	pool->nfrees += freed_pages;  in ttm_pool_update_free_locked()
378 static void ttm_dma_pages_put(struct dma_pool *pool, struct list_head *d_pages,  in ttm_dma_pages_put()  argument
384 	if (npages && !(pool->type & IS_CACHED) &&  in ttm_dma_pages_put()
387 		       pool->dev_name, npages);  in ttm_dma_pages_put()
391 		__ttm_dma_free_page(pool, d_page);  in ttm_dma_pages_put()
395 static void ttm_dma_page_put(struct dma_pool *pool, struct dma_page *d_page)  in ttm_dma_page_put()  argument
398 	if (!(pool->type & IS_CACHED) && set_pages_array_wb(&d_page->p, 1))  in ttm_dma_page_put()
400 		       pool->dev_name, 1);  in ttm_dma_page_put()
403 	__ttm_dma_free_page(pool, d_page);  in ttm_dma_page_put()
416 static unsigned ttm_dma_page_pool_free(struct dma_pool *pool, unsigned nr_free,  in ttm_dma_page_pool_free()  argument
432 			 pool->dev_name, pool->name, current->pid,  in ttm_dma_page_pool_free()
444 		       pool->dev_name);  in ttm_dma_page_pool_free()
449 	spin_lock_irqsave(&pool->lock, irq_flags);  in ttm_dma_page_pool_free()
452 	list_for_each_entry_safe_reverse(dma_p, tmp, &pool->free_list,  in ttm_dma_page_pool_free()
464 			ttm_pool_update_free_locked(pool, freed_pages);  in ttm_dma_page_pool_free()
469 			spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_page_pool_free()
471 			ttm_dma_pages_put(pool, &d_pages, pages_to_free,  in ttm_dma_page_pool_free()
501 		ttm_pool_update_free_locked(pool, freed_pages);  in ttm_dma_page_pool_free()
505 	spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_page_pool_free()
508 		ttm_dma_pages_put(pool, &d_pages, pages_to_free, freed_pages);  in ttm_dma_page_pool_free()
518 	struct dma_pool *pool;  in ttm_dma_free_pool()  local
527 		pool = p->pool;  in ttm_dma_free_pool()
528 		if (pool->type != type)  in ttm_dma_free_pool()
536 	list_for_each_entry_reverse(pool, &dev->dma_pools, pools) {  in ttm_dma_free_pool()
537 		if (pool->type != type)  in ttm_dma_free_pool()
541 		ttm_dma_page_pool_free(pool, FREE_ALL_PAGES, true);  in ttm_dma_free_pool()
542 		WARN_ON(((pool->npages_in_use + pool->npages_free) != 0));  in ttm_dma_free_pool()
547 		list_del(&pool->pools);  in ttm_dma_free_pool()
548 		kfree(pool);  in ttm_dma_free_pool()
560 	struct dma_pool *pool = *(struct dma_pool **)res;  in ttm_dma_pool_release()  local
562 	if (pool)  in ttm_dma_pool_release()
563 		ttm_dma_free_pool(dev, pool->type);  in ttm_dma_pool_release()
577 	struct dma_pool *pool = NULL, **ptr;  in ttm_dma_pool_init()  local
591 	pool = kmalloc_node(sizeof(struct dma_pool), GFP_KERNEL,  in ttm_dma_pool_init()
593 	if (!pool)  in ttm_dma_pool_init()
603 	sec_pool->pool =  pool;  in ttm_dma_pool_init()
605 	INIT_LIST_HEAD(&pool->free_list);  in ttm_dma_pool_init()
606 	INIT_LIST_HEAD(&pool->inuse_list);  in ttm_dma_pool_init()
607 	INIT_LIST_HEAD(&pool->pools);  in ttm_dma_pool_init()
608 	spin_lock_init(&pool->lock);  in ttm_dma_pool_init()
609 	pool->dev = dev;  in ttm_dma_pool_init()
610 	pool->npages_free = pool->npages_in_use = 0;  in ttm_dma_pool_init()
611 	pool->nfrees = 0;  in ttm_dma_pool_init()
612 	pool->gfp_flags = flags;  in ttm_dma_pool_init()
613 	pool->size = PAGE_SIZE;  in ttm_dma_pool_init()
614 	pool->type = type;  in ttm_dma_pool_init()
615 	pool->nrefills = 0;  in ttm_dma_pool_init()
616 	p = pool->name;  in ttm_dma_pool_init()
619 			p += snprintf(p, sizeof(pool->name) - (p - pool->name),  in ttm_dma_pool_init()
626 	snprintf(pool->dev_name, sizeof(pool->dev_name), "%s %s",  in ttm_dma_pool_init()
633 	list_add(&pool->pools, &dev->dma_pools);  in ttm_dma_pool_init()
636 	*ptr = pool;  in ttm_dma_pool_init()
639 	return pool;  in ttm_dma_pool_init()
643 	kfree(pool);  in ttm_dma_pool_init()
650 	struct dma_pool *pool, *tmp, *found = NULL;  in ttm_dma_find_pool()  local
666 	list_for_each_entry_safe(pool, tmp, &dev->dma_pools, pools) {  in ttm_dma_find_pool()
667 		if (pool->type != type)  in ttm_dma_find_pool()
669 		found = pool;  in ttm_dma_find_pool()
680 static void ttm_dma_handle_caching_state_failure(struct dma_pool *pool,  in ttm_dma_handle_caching_state_failure()  argument
698 		__ttm_dma_free_page(pool, d_page);  in ttm_dma_handle_caching_state_failure()
713 static int ttm_dma_pool_alloc_new_pages(struct dma_pool *pool,  in ttm_dma_pool_alloc_new_pages()  argument
730 		       pool->dev_name);  in ttm_dma_pool_alloc_new_pages()
736 			 pool->dev_name, pool->name, current->pid, count);  in ttm_dma_pool_alloc_new_pages()
740 		dma_p = __ttm_dma_alloc_page(pool);  in ttm_dma_pool_alloc_new_pages()
743 			       pool->dev_name, i);  in ttm_dma_pool_alloc_new_pages()
748 				r = ttm_set_pages_caching(pool, caching_array,  in ttm_dma_pool_alloc_new_pages()
752 						pool, d_pages, caching_array,  in ttm_dma_pool_alloc_new_pages()
769 				r = ttm_set_pages_caching(pool, caching_array,  in ttm_dma_pool_alloc_new_pages()
773 						pool, d_pages, caching_array,  in ttm_dma_pool_alloc_new_pages()
784 		r = ttm_set_pages_caching(pool, caching_array, cpages);  in ttm_dma_pool_alloc_new_pages()
786 			ttm_dma_handle_caching_state_failure(pool, d_pages,  in ttm_dma_pool_alloc_new_pages()
797 static int ttm_dma_page_pool_fill_locked(struct dma_pool *pool,  in ttm_dma_page_pool_fill_locked()  argument
801 	int r = pool->npages_free;  in ttm_dma_page_pool_fill_locked()
803 	if (count > pool->npages_free) {  in ttm_dma_page_pool_fill_locked()
808 		spin_unlock_irqrestore(&pool->lock, *irq_flags);  in ttm_dma_page_pool_fill_locked()
812 		r = ttm_dma_pool_alloc_new_pages(pool, &d_pages, count);  in ttm_dma_page_pool_fill_locked()
814 		spin_lock_irqsave(&pool->lock, *irq_flags);  in ttm_dma_page_pool_fill_locked()
817 			list_splice(&d_pages, &pool->free_list);  in ttm_dma_page_pool_fill_locked()
818 			++pool->nrefills;  in ttm_dma_page_pool_fill_locked()
819 			pool->npages_free += count;  in ttm_dma_page_pool_fill_locked()
826 			       pool->dev_name, pool->name, r);  in ttm_dma_page_pool_fill_locked()
831 			list_splice_tail(&d_pages, &pool->free_list);  in ttm_dma_page_pool_fill_locked()
832 			pool->npages_free += cpages;  in ttm_dma_page_pool_fill_locked()
844 static int ttm_dma_pool_get_pages(struct dma_pool *pool,  in ttm_dma_pool_get_pages()  argument
853 	spin_lock_irqsave(&pool->lock, irq_flags);  in ttm_dma_pool_get_pages()
854 	count = ttm_dma_page_pool_fill_locked(pool, &irq_flags);  in ttm_dma_pool_get_pages()
856 		d_page = list_first_entry(&pool->free_list, struct dma_page, page_list);  in ttm_dma_pool_get_pages()
862 		pool->npages_in_use += 1;  in ttm_dma_pool_get_pages()
863 		pool->npages_free -= 1;  in ttm_dma_pool_get_pages()
865 	spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_pool_get_pages()
877 	struct dma_pool *pool;  in ttm_dma_populate()  local
894 	pool = ttm_dma_find_pool(dev, type);  in ttm_dma_populate()
895 	if (!pool) {  in ttm_dma_populate()
896 		pool = ttm_dma_pool_init(dev, gfp_flags, type);  in ttm_dma_populate()
897 		if (IS_ERR_OR_NULL(pool)) {  in ttm_dma_populate()
904 		ret = ttm_dma_pool_get_pages(pool, ttm_dma, i);  in ttm_dma_populate()
935 	struct dma_pool *pool;  in ttm_dma_unpopulate()  local
943 	pool = ttm_dma_find_pool(dev, type);  in ttm_dma_unpopulate()
944 	if (!pool)  in ttm_dma_unpopulate()
947 	is_cached = (ttm_dma_find_pool(pool->dev,  in ttm_dma_unpopulate()
948 		     ttm_to_type(ttm->page_flags, tt_cached)) == pool);  in ttm_dma_unpopulate()
956 	spin_lock_irqsave(&pool->lock, irq_flags);  in ttm_dma_unpopulate()
957 	pool->npages_in_use -= count;  in ttm_dma_unpopulate()
959 		pool->nfrees += count;  in ttm_dma_unpopulate()
961 		pool->npages_free += count;  in ttm_dma_unpopulate()
962 		list_splice(&ttm_dma->pages_list, &pool->free_list);  in ttm_dma_unpopulate()
964 		if (pool->npages_free > _manager->options.max_size) {  in ttm_dma_unpopulate()
965 			npages = pool->npages_free - _manager->options.max_size;  in ttm_dma_unpopulate()
972 	spin_unlock_irqrestore(&pool->lock, irq_flags);  in ttm_dma_unpopulate()
978 			ttm_dma_page_put(pool, d_page);  in ttm_dma_unpopulate()
996 		ttm_dma_page_pool_free(pool, npages, false);  in ttm_dma_unpopulate()
1039 		shrink_pages = ttm_dma_page_pool_free(p->pool, nr_free, true);  in ttm_dma_pool_shrink_scan()
1043 			 p->pool->dev_name, p->pool->name, current->pid,  in ttm_dma_pool_shrink_scan()
1060 		count += p->pool->npages_free;  in ttm_dma_pool_shrink_count()
1118 		dev_dbg(p->dev, "(%s:%d) Freeing.\n", p->pool->name,  in ttm_dma_page_alloc_fini()
1121 			ttm_dma_pool_match, p->pool));  in ttm_dma_page_alloc_fini()
1122 		ttm_dma_free_pool(p->dev, p->pool->type);  in ttm_dma_page_alloc_fini()
1131 	struct dma_pool *pool = NULL;  in ttm_dma_page_alloc_debugfs()  local
1146 		pool = p->pool;  in ttm_dma_page_alloc_debugfs()
1148 				pool->name, pool->nrefills,  in ttm_dma_page_alloc_debugfs()
1149 				pool->nfrees, pool->npages_in_use,  in ttm_dma_page_alloc_debugfs()
1150 				pool->npages_free,  in ttm_dma_page_alloc_debugfs()
1151 				pool->dev_name);  in ttm_dma_page_alloc_debugfs()