| #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 |