4 #include <linux/init.h>
5 #include <linux/types.h>
8 * There is always at least global CMA area and a few optional
9 * areas configured in kernel .config.
11 #ifdef CONFIG_CMA_AREAS
12 #define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
15 #define MAX_CMA_AREAS (0)
21 extern unsigned long totalcma_pages;
22 extern phys_addr_t cma_get_base(const struct cma *cma);
23 extern unsigned long cma_get_size(const struct cma *cma);
24 extern const char *cma_get_name(const struct cma *cma);
26 extern int __init cma_declare_contiguous(phys_addr_t base,
27 phys_addr_t size, phys_addr_t limit,
28 phys_addr_t alignment, unsigned int order_per_bit,
29 bool fixed, const char *name, struct cma **res_cma);
30 extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
31 unsigned int order_per_bit,
33 struct cma **res_cma);
34 extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
36 extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
38 extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data);