1 /*
2 * include/linux/dmapool.h
3 *
4 * Allocation pools for DMAable (coherent) memory.
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10
11 #ifndef LINUX_DMAPOOL_H
12 #define LINUX_DMAPOOL_H
13
14 #include <linux/scatterlist.h>
15 #include <asm/io.h>
16
17 struct device;
18
19 struct dma_pool *dma_pool_create(const char *name, struct device *dev,
20 size_t size, size_t align, size_t allocation);
21
22 void dma_pool_destroy(struct dma_pool *pool);
23
24 void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
25 dma_addr_t *handle);
26
dma_pool_zalloc(struct dma_pool * pool,gfp_t mem_flags,dma_addr_t * handle)27 static inline void *dma_pool_zalloc(struct dma_pool *pool, gfp_t mem_flags,
28 dma_addr_t *handle)
29 {
30 return dma_pool_alloc(pool, mem_flags | __GFP_ZERO, handle);
31 }
32
33 void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t addr);
34
35 /*
36 * Managed DMA pool
37 */
38 struct dma_pool *dmam_pool_create(const char *name, struct device *dev,
39 size_t size, size_t align, size_t allocation);
40 void dmam_pool_destroy(struct dma_pool *pool);
41
42 #endif
43
44