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TOMOYO Linux Cross Reference
Linux/include/linux/dmapool.h

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  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 
 44 

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