| 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 | |
| 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 | |