#ifndef _JOVE_MEMORY_H
#define _JOVE_MEMORY_H 1

#define KiB 1024ULL
#define MiB (KiB * KiB)
#define GiB (MiB * KiB)
#define TiB (GiB * KiB)

#include <stdbool.h>
#include <stddef.h>
#include "arch/page.h"

typedef uintptr_t physptr_t;

extern const uintptr_t USERLAND_MEMORY_BASE;
extern const uintptr_t USERLAND_MEMORY_LIMIT;
extern const uintptr_t PHYSMAP_MEMORY_BASE;
extern const uintptr_t PHYSMAP_MEMORY_LIMIT;
extern const uintptr_t KERNEL_MEMORY_BASE;
extern const uintptr_t KERNEL_MEMORY_LIMIT;

page_mapping_t vm_pd_mapping_get(page_directory_t *pd, uintptr_t addr);
void vm_pd_mapping_set(page_directory_t *pd, page_mapping_t mapping, uintptr_t addr);
void vm_pd_ensure(page_directory_t *pd, uintptr_t from, uintptr_t to, page_flags_t flg);

page_mapping_t vm_mapping_get(uintptr_t addr);
void vm_mapping_set(page_mapping_t mapping, uintptr_t virt);
void vm_ensure(uintptr_t from, uintptr_t to, page_flags_t flg);

physptr_t vm_tophys(uintptr_t virt);
physptr_t vm_tophys_koff(uintptr_t virt);

uintptr_t pm_tovirt(physptr_t phys);

physptr_t pm_alloc(size_t pages);
void pm_reserve(physptr_t start, physptr_t end);
void pm_release(physptr_t start, physptr_t end);

void mm_setup_early(void);
void vm_setup_early(void);

void mm_setup(void);
void vm_setup(void);

void* kmalloc(size_t width);
void *krealloc(void *ptr, size_t width);
void kfree(void *ptr);

#endif