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memblock: add functions to convert allocated pointers between virt/phys

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max 🍓
2023-02-06 20:39:33 +00:00
parent 6afb3bd10d
commit 998f05d337
2 changed files with 24 additions and 0 deletions
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14
include/socks/memblock.h
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@@ -301,6 +301,20 @@ extern int memblock_free(void *addr, size_t size);
*/ */
extern int memblock_free_phys(phys_addr_t addr, size_t size); extern int memblock_free_phys(phys_addr_t addr, size_t size);
/* convert a virtual pointer returned by memblock
to a physical address.
@param p the pointer to convert.
*/
extern phys_addr_t memblock_virt_to_phys(void *p);
/* convert a physical address returned by memblock
to a virtual pointer.
@param p the address to convert.
*/
extern void *memblock_phys_to_virt(phys_addr_t p);
extern void __next_memory_region(memblock_iter_t *it, \ extern void __next_memory_region(memblock_iter_t *it, \
memblock_type_t *type_a, memblock_type_t *type_b, memblock_type_t *type_a, memblock_type_t *type_b,
phys_addr_t start, phys_addr_t end); phys_addr_t start, phys_addr_t end);

10
vm/memblock.c
View File

@@ -404,3 +404,13 @@ void __next_memory_region(memblock_iter_t *it, memblock_type_t *type_a, memblock
/* ULLONG_MAX signals the end of the iteration */ /* ULLONG_MAX signals the end of the iteration */
it->__idx = ITER_END; it->__idx = ITER_END;
} }
phys_addr_t memblock_virt_to_phys(void *p)
{
return (phys_addr_t)p - memblock.m_voffset;
}
void *memblock_phys_to_virt(phys_addr_t p)
{
return (void *)(p + memblock.m_voffset);
}