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()
298 				       pool->name, page->vaddr);  in dma_pool_destroy()
303 			pool_free_page(pool, page);  in dma_pool_destroy()
306 	kfree(pool);  in dma_pool_destroy()
320 void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,  in dma_pool_alloc()  argument
330 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_alloc()
331 	list_for_each_entry(page, &pool->page_list, page_list) {  in dma_pool_alloc()
332 		if (page->offset < pool->allocation)  in dma_pool_alloc()
337 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_alloc()
339 	page = pool_alloc_page(pool, mem_flags & (~__GFP_ZERO));  in dma_pool_alloc()
343 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_alloc()
345 	list_add(&page->page_list, &pool->page_list);  in dma_pool_alloc()
357 		for (i = sizeof(page->offset); i < pool->size; i++) {  in dma_pool_alloc()
360 			if (pool->dev)  in dma_pool_alloc()
361 				dev_err(pool->dev,  in dma_pool_alloc()
363 					pool->name, retval);  in dma_pool_alloc()
366 					pool->name, retval);  in dma_pool_alloc()
373 					data, pool->size, 1);  in dma_pool_alloc()
378 		memset(retval, POOL_POISON_ALLOCATED, pool->size);  in dma_pool_alloc()
380 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_alloc()
383 		memset(retval, 0, pool->size);  in dma_pool_alloc()
389 static struct dma_page *pool_find_page(struct dma_pool *pool, dma_addr_t dma)  in pool_find_page()  argument
393 	list_for_each_entry(page, &pool->page_list, page_list) {  in pool_find_page()
396 		if ((dma - page->dma) < pool->allocation)  in pool_find_page()
411 void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma)  in dma_pool_free()  argument
417 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_free()
418 	page = pool_find_page(pool, dma);  in dma_pool_free()
420 		spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
421 		if (pool->dev)  in dma_pool_free()
422 			dev_err(pool->dev,  in dma_pool_free()
424 				pool->name, vaddr, (unsigned long)dma);  in dma_pool_free()
427 			       pool->name, vaddr, (unsigned long)dma);  in dma_pool_free()
434 		spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
435 		if (pool->dev)  in dma_pool_free()
436 			dev_err(pool->dev,  in dma_pool_free()
438 				pool->name, vaddr, &dma);  in dma_pool_free()
441 			       pool->name, vaddr, &dma);  in dma_pool_free()
446 		while (chain < pool->allocation) {  in dma_pool_free()
451 			spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
452 			if (pool->dev)  in dma_pool_free()
453 				dev_err(pool->dev, "dma_pool_free %s, dma %pad already free\n",  in dma_pool_free()
454 					pool->name, &dma);  in dma_pool_free()
457 				       pool->name, &dma);  in dma_pool_free()
461 	memset(vaddr, POOL_POISON_FREED, pool->size);  in dma_pool_free()
472 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
481 	struct dma_pool *pool = *(struct dma_pool **)res;  in dmam_pool_release()  local
483 	dma_pool_destroy(pool);  in dmam_pool_release()
505 	struct dma_pool **ptr, *pool;  in dmam_pool_create()  local
511 	pool = *ptr = dma_pool_create(name, dev, size, align, allocation);  in dmam_pool_create()
512 	if (pool)  in dmam_pool_create()
517 	return pool;  in dmam_pool_create()
527 void dmam_pool_destroy(struct dma_pool *pool)  in dmam_pool_destroy()  argument
529 	struct device *dev = pool->dev;  in dmam_pool_destroy()
531 	WARN_ON(devres_release(dev, dmam_pool_release, dmam_pool_match, pool));  in dmam_pool_destroy()