74 	struct dma_pool *pool;  in show_pools()  local
84 	list_for_each_entry(pool, &dev->dma_pools, pools) {  in show_pools()
88 		spin_lock_irq(&pool->lock);  in show_pools()
89 		list_for_each_entry(page, &pool->page_list, page_list) {  in show_pools()
93 		spin_unlock_irq(&pool->lock);  in show_pools()
97 				 pool->name, blocks,  in show_pools()
98 				 pages * (pool->allocation / pool->size),  in show_pools()
99 				 pool->size, pages);  in show_pools()
206 static void pool_initialise_page(struct dma_pool *pool, struct dma_page *page)  in pool_initialise_page()  argument
209 	unsigned int next_boundary = pool->boundary;  in pool_initialise_page()
212 		unsigned int next = offset + pool->size;  in pool_initialise_page()
213 		if (unlikely((next + pool->size) >= next_boundary)) {  in pool_initialise_page()
215 			next_boundary += pool->boundary;  in pool_initialise_page()
219 	} while (offset < pool->allocation);  in pool_initialise_page()
222 static struct dma_page *pool_alloc_page(struct dma_pool *pool, gfp_t mem_flags)  in pool_alloc_page()  argument
229 	page->vaddr = dma_alloc_coherent(pool->dev, pool->allocation,  in pool_alloc_page()
233 		memset(page->vaddr, POOL_POISON_FREED, pool->allocation);  in pool_alloc_page()
235 		pool_initialise_page(pool, page);  in pool_alloc_page()
250 static void pool_free_page(struct dma_pool *pool, struct dma_page *page)  in pool_free_page()  argument
255 	memset(page->vaddr, POOL_POISON_FREED, pool->allocation);  in pool_free_page()
257 	dma_free_coherent(pool->dev, pool->allocation, page->vaddr, dma);  in pool_free_page()
270 void dma_pool_destroy(struct dma_pool *pool)  in dma_pool_destroy()  argument
274 	if (unlikely(!pool))  in dma_pool_destroy()
279 	list_del(&pool->pools);  in dma_pool_destroy()
280 	if (pool->dev && list_empty(&pool->dev->dma_pools))  in dma_pool_destroy()
284 		device_remove_file(pool->dev, &dev_attr_pools);  in dma_pool_destroy()
287 	while (!list_empty(&pool->page_list)) {  in dma_pool_destroy()
289 		page = list_entry(pool->page_list.next,  in dma_pool_destroy()
292 			if (pool->dev)  in dma_pool_destroy()
293 				dev_err(pool->dev,  in dma_pool_destroy()
295 					pool->name, page->vaddr);  in dma_pool_destroy()
299 				       pool->name, page->vaddr);  in dma_pool_destroy()
304 			pool_free_page(pool, page);  in dma_pool_destroy()
307 	kfree(pool);  in dma_pool_destroy()
321 void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,  in dma_pool_alloc()  argument
331 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_alloc()
332 	list_for_each_entry(page, &pool->page_list, page_list) {  in dma_pool_alloc()
333 		if (page->offset < pool->allocation)  in dma_pool_alloc()
338 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_alloc()
340 	page = pool_alloc_page(pool, mem_flags & (~__GFP_ZERO));  in dma_pool_alloc()
344 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_alloc()
346 	list_add(&page->page_list, &pool->page_list);  in dma_pool_alloc()
358 		for (i = sizeof(page->offset); i < pool->size; i++) {  in dma_pool_alloc()
361 			if (pool->dev)  in dma_pool_alloc()
362 				dev_err(pool->dev,  in dma_pool_alloc()
364 					pool->name, retval);  in dma_pool_alloc()
367 					pool->name, retval);  in dma_pool_alloc()
374 					data, pool->size, 1);  in dma_pool_alloc()
379 		memset(retval, POOL_POISON_ALLOCATED, pool->size);  in dma_pool_alloc()
381 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_alloc()
384 		memset(retval, 0, pool->size);  in dma_pool_alloc()
390 static struct dma_page *pool_find_page(struct dma_pool *pool, dma_addr_t dma)  in pool_find_page()  argument
394 	list_for_each_entry(page, &pool->page_list, page_list) {  in pool_find_page()
397 		if ((dma - page->dma) < pool->allocation)  in pool_find_page()
412 void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma)  in dma_pool_free()  argument
418 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_free()
419 	page = pool_find_page(pool, dma);  in dma_pool_free()
421 		spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
422 		if (pool->dev)  in dma_pool_free()
423 			dev_err(pool->dev,  in dma_pool_free()
425 				pool->name, vaddr, (unsigned long)dma);  in dma_pool_free()
428 			       pool->name, vaddr, (unsigned long)dma);  in dma_pool_free()
435 		spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
436 		if (pool->dev)  in dma_pool_free()
437 			dev_err(pool->dev,  in dma_pool_free()
439 				pool->name, vaddr, (unsigned long long)dma);  in dma_pool_free()
443 			       pool->name, vaddr, (unsigned long long)dma);  in dma_pool_free()
448 		while (chain < pool->allocation) {  in dma_pool_free()
453 			spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
454 			if (pool->dev)  in dma_pool_free()
455 				dev_err(pool->dev, "dma_pool_free %s, dma %Lx "  in dma_pool_free()
456 					"already free\n", pool->name,  in dma_pool_free()
460 					"already free\n", pool->name,  in dma_pool_free()
465 	memset(vaddr, POOL_POISON_FREED, pool->size);  in dma_pool_free()
476 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
485 	struct dma_pool *pool = *(struct dma_pool **)res;  in dmam_pool_release()  local
487 	dma_pool_destroy(pool);  in dmam_pool_release()
509 	struct dma_pool **ptr, *pool;  in dmam_pool_create()  local
515 	pool = *ptr = dma_pool_create(name, dev, size, align, allocation);  in dmam_pool_create()
516 	if (pool)  in dmam_pool_create()
521 	return pool;  in dmam_pool_create()
531 void dmam_pool_destroy(struct dma_pool *pool)  in dmam_pool_destroy()  argument
533 	struct device *dev = pool->dev;  in dmam_pool_destroy()
535 	WARN_ON(devres_release(dev, dmam_pool_release, dmam_pool_match, pool));  in dmam_pool_destroy()