71 	struct dma_pool *pool;  in pools_show()  local
81 	list_for_each_entry(pool, &dev->dma_pools, pools) {  in pools_show()
85 		spin_lock_irq(&pool->lock);  in pools_show()
86 		list_for_each_entry(page, &pool->page_list, page_list) {  in pools_show()
90 		spin_unlock_irq(&pool->lock);  in pools_show()
94 				 pool->name, blocks,  in pools_show()
95 				 pages * (pool->allocation / pool->size),  in pools_show()
96 				 pool->size, pages);  in pools_show()
203 static void pool_initialise_page(struct dma_pool *pool, struct dma_page *page)  in pool_initialise_page()  argument
206 	unsigned int next_boundary = pool->boundary;  in pool_initialise_page()
209 		unsigned int next = offset + pool->size;  in pool_initialise_page()
210 		if (unlikely((next + pool->size) >= next_boundary)) {  in pool_initialise_page()
212 			next_boundary += pool->boundary;  in pool_initialise_page()
216 	} while (offset < pool->allocation);  in pool_initialise_page()
219 static struct dma_page *pool_alloc_page(struct dma_pool *pool, gfp_t mem_flags)  in pool_alloc_page()  argument
226 	page->vaddr = dma_alloc_coherent(pool->dev, pool->allocation,  in pool_alloc_page()
230 		memset(page->vaddr, POOL_POISON_FREED, pool->allocation);  in pool_alloc_page()
232 		pool_initialise_page(pool, page);  in pool_alloc_page()
247 static void pool_free_page(struct dma_pool *pool, struct dma_page *page)  in pool_free_page()  argument
252 	memset(page->vaddr, POOL_POISON_FREED, pool->allocation);  in pool_free_page()
254 	dma_free_coherent(pool->dev, pool->allocation, page->vaddr, dma);  in pool_free_page()
267 void dma_pool_destroy(struct dma_pool *pool)  in dma_pool_destroy()  argument
272 	if (unlikely(!pool))  in dma_pool_destroy()
277 	list_del(&pool->pools);  in dma_pool_destroy()
278 	if (pool->dev && list_empty(&pool->dev->dma_pools))  in dma_pool_destroy()
282 		device_remove_file(pool->dev, &dev_attr_pools);  in dma_pool_destroy()
285 	list_for_each_entry_safe(page, tmp, &pool->page_list, page_list) {  in dma_pool_destroy()
287 			if (pool->dev)  in dma_pool_destroy()
288 				dev_err(pool->dev, "%s %s, %p busy\n", __func__,  in dma_pool_destroy()
289 					pool->name, page->vaddr);  in dma_pool_destroy()
292 				       pool->name, page->vaddr);  in dma_pool_destroy()
297 			pool_free_page(pool, page);  in dma_pool_destroy()
300 	kfree(pool);  in dma_pool_destroy()
314 void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,  in dma_pool_alloc()  argument
324 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_alloc()
325 	list_for_each_entry(page, &pool->page_list, page_list) {  in dma_pool_alloc()
326 		if (page->offset < pool->allocation)  in dma_pool_alloc()
331 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_alloc()
333 	page = pool_alloc_page(pool, mem_flags & (~__GFP_ZERO));  in dma_pool_alloc()
337 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_alloc()
339 	list_add(&page->page_list, &pool->page_list);  in dma_pool_alloc()
351 		for (i = sizeof(page->offset); i < pool->size; i++) {  in dma_pool_alloc()
354 			if (pool->dev)  in dma_pool_alloc()
355 				dev_err(pool->dev, "%s %s, %p (corrupted)\n",  in dma_pool_alloc()
356 					__func__, pool->name, retval);  in dma_pool_alloc()
359 					__func__, pool->name, retval);  in dma_pool_alloc()
366 					data, pool->size, 1);  in dma_pool_alloc()
371 		memset(retval, POOL_POISON_ALLOCATED, pool->size);  in dma_pool_alloc()
373 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_alloc()
376 		memset(retval, 0, pool->size);  in dma_pool_alloc()
382 static struct dma_page *pool_find_page(struct dma_pool *pool, dma_addr_t dma)  in pool_find_page()  argument
386 	list_for_each_entry(page, &pool->page_list, page_list) {  in pool_find_page()
389 		if ((dma - page->dma) < pool->allocation)  in pool_find_page()
404 void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma)  in dma_pool_free()  argument
410 	spin_lock_irqsave(&pool->lock, flags);  in dma_pool_free()
411 	page = pool_find_page(pool, dma);  in dma_pool_free()
413 		spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
414 		if (pool->dev)  in dma_pool_free()
415 			dev_err(pool->dev, "%s %s, %p/%pad (bad dma)\n",  in dma_pool_free()
416 				__func__, pool->name, vaddr, &dma);  in dma_pool_free()
419 			       __func__, pool->name, vaddr, &dma);  in dma_pool_free()
425 		memset(vaddr, 0, pool->size);  in dma_pool_free()
428 		spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
429 		if (pool->dev)  in dma_pool_free()
430 			dev_err(pool->dev, "%s %s, %p (bad vaddr)/%pad\n",  in dma_pool_free()
431 				__func__, pool->name, vaddr, &dma);  in dma_pool_free()
434 			       __func__, pool->name, vaddr, &dma);  in dma_pool_free()
439 		while (chain < pool->allocation) {  in dma_pool_free()
444 			spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
445 			if (pool->dev)  in dma_pool_free()
446 				dev_err(pool->dev, "%s %s, dma %pad already free\n",  in dma_pool_free()
447 					__func__, pool->name, &dma);  in dma_pool_free()
450 				       __func__, pool->name, &dma);  in dma_pool_free()
454 	memset(vaddr, POOL_POISON_FREED, pool->size);  in dma_pool_free()
465 	spin_unlock_irqrestore(&pool->lock, flags);  in dma_pool_free()
474 	struct dma_pool *pool = *(struct dma_pool **)res;  in dmam_pool_release()  local
476 	dma_pool_destroy(pool);  in dmam_pool_release()
501 	struct dma_pool **ptr, *pool;  in dmam_pool_create()  local
507 	pool = *ptr = dma_pool_create(name, dev, size, align, allocation);  in dmam_pool_create()
508 	if (pool)  in dmam_pool_create()
513 	return pool;  in dmam_pool_create()
523 void dmam_pool_destroy(struct dma_pool *pool)  in dmam_pool_destroy()  argument
525 	struct device *dev = pool->dev;  in dmam_pool_destroy()
527 	WARN_ON(devres_release(dev, dmam_pool_release, dmam_pool_match, pool));  in dmam_pool_destroy()