vmm.h

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#ifndef _VMM_H_
#define _VMM_H_

#include <types.h>

struct slab
{
        struct slab *prev;
        size_t nb_pages;
        struct slab *next;
};

struct slabs_list
{
        struct slab *begin;
        struct slab *end;
};

struct virtual_mem
{
        struct slabs_list free_slabs;
        struct slabs_list used_slabs;
        vaddr_t vmm_top;
};

void init_vmm(struct virtual_mem *kvm);

void init_process_vm(struct virtual_mem *vm, int init_nb_pages);

unsigned int allocate_new_page(struct virtual_mem *vm, void **alloc, int u_s);

unsigned int allocate_new_pages(struct virtual_mem *vm, unsigned int nb_pages,
                                                                                                                                void **alloc, int u_s);
int unallocate_page(struct virtual_mem *vm, void *page);
unsigned int calculate_min_pages(size_t size);
void vmm_print_heap(struct virtual_mem *vm);
vaddr_t get_linear_address(int dir, int table, int offset);

void sys_vmm(uint32_t min_size, void **alloc, size_t *real_alloc_size);

struct page_table_entry *get_pte(int dir, int table);
paddr_t vmm_get_page_paddr(vaddr_t vaddr); 

int map(paddr_t phys_page_addr, vaddr_t virt_page_addr, int u_s);
void unmap(vaddr_t virt_page_addr);

#endif