Commit | Line | Data |
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a254129e JK |
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 | ||
e48322ab | 18 | extern unsigned long totalcma_pages; |
ac173824 SL |
19 | extern phys_addr_t cma_get_base(const struct cma *cma); |
20 | extern unsigned long cma_get_size(const struct cma *cma); | |
a254129e | 21 | |
dda02fd6 WY |
22 | extern int __init cma_declare_contiguous(phys_addr_t base, |
23 | phys_addr_t size, phys_addr_t limit, | |
a254129e | 24 | phys_addr_t alignment, unsigned int order_per_bit, |
c1f733aa | 25 | bool fixed, struct cma **res_cma); |
ac173824 SL |
26 | extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, |
27 | unsigned int order_per_bit, | |
de9e14ee | 28 | struct cma **res_cma); |
67a2e213 | 29 | extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align); |
ac173824 | 30 | extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); |
a254129e | 31 | #endif |