| #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(struct cma *cma); |
| extern unsigned long cma_get_size(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, int order_per_bit, |
| struct cma **res_cma); |
| extern struct page *cma_alloc(struct cma *cma, int count, unsigned int align); |
| extern bool cma_release(struct cma *cma, struct page *pages, int count); |
| #endif |
