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- #ifndef __CMA_H__
- #define __CMA_H__
- /*
- * There is always at least global CMA area and a few optional
- * areas configured in kernel .config.
- */
- #ifdef CONFIG_CMA_AREAS
- #define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
- #else
- #define MAX_CMA_AREAS (0)
- #endif
- struct cma;
- extern unsigned long totalcma_pages;
- extern phys_addr_t cma_get_base(const struct cma *cma);
- extern unsigned long cma_get_size(const struct cma *cma);
- extern int __init cma_declare_contiguous(phys_addr_t base,
- phys_addr_t size, phys_addr_t limit,
- phys_addr_t alignment, unsigned int order_per_bit,
- bool fixed, struct cma **res_cma);
- extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
- unsigned int order_per_bit,
- struct cma **res_cma);
- extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
- extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
- #endif
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