2020-11-27 05:42:13 -05:00
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#ifndef KERNAUX_INCLUDED_PFA
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#define KERNAUX_INCLUDED_PFA 1
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2020-11-27 04:28:13 -05:00
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2021-12-13 15:46:58 -05:00
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#ifdef __cplusplus
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extern "C" {
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#endif
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2020-12-06 05:16:15 -05:00
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#include <stdbool.h>
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2021-12-13 17:59:51 -05:00
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#include <stddef.h>
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2020-11-30 17:54:09 -05:00
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#define KERNAUX_PFA_PAGE_SIZE (4 * 1024)
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#define KERNAUX_PFA_PAGES_COUNT_MAX (1024 * 1024)
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2021-12-13 20:21:47 -05:00
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#define KernAux_PFA_alloc_page(pfa) \
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(KernAux_PFA_alloc_pages((pfa), KERNAUX_PFA_PAGE_SIZE))
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#define KernAux_PFA_free_page(pfa, page_addr) \
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(KernAux_PFA_free_pages((pfa), (page_addr), KERNAUX_PFA_PAGE_SIZE))
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2021-12-13 18:03:13 -05:00
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typedef struct KernAux_PFA *KernAux_PFA;
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2020-11-30 17:54:09 -05:00
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struct KernAux_PFA {
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2020-12-06 05:16:15 -05:00
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bool pages[KERNAUX_PFA_PAGES_COUNT_MAX];
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2020-11-30 17:54:09 -05:00
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};
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2021-12-13 18:03:13 -05:00
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void KernAux_PFA_initialize(KernAux_PFA pfa)
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2020-11-30 17:54:09 -05:00
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__attribute__((nonnull));
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2021-12-13 18:10:05 -05:00
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bool KernAux_PFA_is_available(KernAux_PFA pfa, size_t page_addr)
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__attribute__((nonnull));
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2021-12-13 18:03:13 -05:00
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void KernAux_PFA_mark_available(KernAux_PFA pfa, size_t start, size_t end)
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2020-11-30 17:54:09 -05:00
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__attribute__((nonnull));
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2021-12-13 18:03:13 -05:00
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void KernAux_PFA_mark_unavailable(KernAux_PFA pfa, size_t start, size_t end)
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2020-12-03 22:04:42 -05:00
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__attribute__((nonnull));
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2021-12-13 19:39:54 -05:00
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size_t KernAux_PFA_alloc_pages(KernAux_PFA pfa, size_t mem_size)
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__attribute__((nonnull));
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void KernAux_PFA_free_pages(KernAux_PFA pfa, size_t page_addr, size_t mem_size)
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__attribute__((nonnull));
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2020-11-27 04:28:13 -05:00
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#ifdef __cplusplus
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}
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#endif
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#endif
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