pmap.h

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#ifndef _MM_PMAP_H
#define _MM_PMAP_H
 
/*
 * The page tables, which each architecture implements (arch/ARCH/mm/). A
 * pmap is an address space's page tables. `pmap_add()` maps a page,
 * `pmap_remove()` unmaps a range, and `pmap_protect()` changes a range's
 * permissions. The `pmap_page_*()` functions reach a physical page
 * through the kernel's mapping.
 */

void pmap_init(void);

struct pmap *pmap_switch(struct pmap *pmap);

struct pmap *pmap_create(void);

void pmap_incref(struct pmap *pmap);

void pmap_decref(struct pmap *pmap);

int  pmap_add(struct pmap *pmap, vaddr_t va, paddr_t pa, uint32_t flags);

void pmap_remove(struct pmap *pmap, vaddr_t sva, vaddr_t eva);

void pmap_protect(struct pmap *pmap, vaddr_t sva, vaddr_t eva, uint32_t prot);

void pmap_page_copy(paddr_t src, paddr_t dst);

void pmap_remove_all(struct pmap *pmap);

int pmap_page_read(paddr_t paddr, off_t off, size_t size, void *buf);

int pmap_page_write(paddr_t paddr, off_t off, size_t size, void *buf);
 
#endif /* _MM_PMAP_H */