[deliverable/linux.git] / include / linux / cma.h

#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
Commit	Line	Data
	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(const struct cma *cma);
	20	extern unsigned long cma_get_size(const 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, phys_addr_t size,
	27	unsigned int order_per_bit,
	28	struct cma **res_cma);
	29	extern struct page cma_alloc(struct cma cma, size_t count, unsigned int align);
	30	extern bool cma_release(struct cma cma, const struct page pages, unsigned int count);
	31	#endif