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37 lines
1.2 KiB
37 lines
1.2 KiB
#ifndef __CMA_H__ |
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#define __CMA_H__ |
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/* |
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* There is always at least global CMA area and a few optional |
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* areas configured in kernel .config. |
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*/ |
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#ifdef CONFIG_CMA_AREAS |
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#define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS) |
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#else |
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#define MAX_CMA_AREAS (0) |
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#endif |
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struct cma; |
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extern unsigned long totalcma_pages; |
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extern phys_addr_t cma_get_base(const struct cma *cma); |
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extern unsigned long cma_get_size(const struct cma *cma); |
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extern void cma_get_range(phys_addr_t *base, phys_addr_t *size); |
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extern int __init cma_declare_contiguous(phys_addr_t base, |
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phys_addr_t size, phys_addr_t limit, |
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phys_addr_t alignment, unsigned int order_per_bit, |
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bool fixed, struct cma **res_cma); |
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extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size, |
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unsigned int order_per_bit, |
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struct cma **res_cma); |
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extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align); |
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extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count); |
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extern struct page *cma_alloc_large(struct cma *cma, int count, unsigned int align); |
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#ifdef CONFIG_ZONE_MOVABLE_CMA |
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extern int cma_alloc_range_ok(struct cma *cma, int count, int align); |
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#endif |
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#endif
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