mm.h

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#ifndef _MM_H_INCLUDED
#define _MM_H_INCLUDED
 
#include <stdint.h>
 
#define KiB (1024)
#define MiB (1024ULL * KiB)
#define GiB (1024ULL * MiB)
#define TiB (1024ULL * GiB)
 
typedef enum {
    MM_UNKNOWN,
    MM_FREE,
    MM_RESERVED,
    MM_UEFI_MAPPING_REQUIRED,
} mm_page_status_t;
 
typedef enum {
    MM_UNCACHED,
    MM_WRITETHROUGH,
    MM_WRITEBACK,
} mm_caching_mode_t;
 
void* mm_alloc_pages(uint64_t count);
 
void mm_set_caching_mode(mm_caching_mode_t mode, ptr_t start, size_t len);
 
void mm_mark_physical_pages(ptr_t start, uint64_t count, mm_page_status_t status);
 
void mm_make_writeable(ptr_t address, int writeable);
 
void mm_print_physical_free_regions(void);
 
void mm_bootstrap(ptr_t usable_page);
 
ptr_t mm_highest_address(void);
 
#endif