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

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  1 #ifndef __CMA_H__
  2 #define __CMA_H__
  3 
  4 /*
  5  * There is always at least global CMA area and a few optional
  6  * areas configured in kernel .config.
  7  */
  8 #ifdef CONFIG_CMA_AREAS
  9 #define MAX_CMA_AREAS   (1 + CONFIG_CMA_AREAS)
 10 
 11 #else
 12 #define MAX_CMA_AREAS   (0)
 13 
 14 #endif
 15 
 16 struct cma;
 17 
 18 extern unsigned long totalcma_pages;
 19 extern phys_addr_t cma_get_base(struct cma *cma);
 20 extern unsigned long cma_get_size(struct cma *cma);
 21 
 22 extern int __init cma_declare_contiguous(phys_addr_t base,
 23                         phys_addr_t size, phys_addr_t limit,
 24                         phys_addr_t alignment, unsigned int order_per_bit,
 25                         bool fixed, struct cma **res_cma);
 26 extern int cma_init_reserved_mem(phys_addr_t base,
 27                                         phys_addr_t size, int order_per_bit,
 28                                         struct cma **res_cma);
 29 extern struct page *cma_alloc(struct cma *cma, int count, unsigned int align);
 30 extern bool cma_release(struct cma *cma, struct page *pages, int count);
 31 #endif
 32 

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