frame.h File Reference

#include <core/multiboot.h>
#include <mmu/bitmap.h>
#include <sys/types.h>

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Macros
#define	PAGE_SIZE   4096
	The default page size.

Functions
void	frame_init ()
opt_uint64_t	frame_allocate ()
void	frame_deallocate (frame_number_t frame_number)
frame_number_t	frame_containing_address (uint64_t physical_address)
uint64_t	frame_start_address (frame_number_t frame_number)
uint64_t	frame_get_used_count ()
uint64_t	frame_get_max_count ()

Function Documentation

frame_allocate()

opt_uint64_t frame_allocate

(

)

Allocates a frame and returns its physical address.

Returns

a physical address (frame) (optional)

frame_containing_address()

frame_number_t frame_containing_address

(

uint64_t

physical_address

)

Returns the frame number given a physical address.

Parameters

physical_address

a physical address (frame)

Returns

a frame number

frame_deallocate()

void frame_deallocate

(

frame_number_t

frame_number

)

Deallocates (free) a frame.

Parameters

frame_number

a frame number (not an address)

frame_get_max_count()

uint64_t frame_get_max_count

(

)

Returns the number of frames that the system can possibly allocate.

Returns

the maximum number of frames

frame_get_used_count()

uint64_t frame_get_used_count

(

)

Returns the number of frames currently used.

Returns

the number of frames currently used

frame_init()

void frame_init

(

)

Initializes the frame allocator (physical memory management).

frame_start_address()

uint64_t frame_start_address

(

frame_number_t

frame_number

)

Returns the physical start address of a frame.

Parameters

frame_number

a frame number (not an address)

Returns

a physical address (frame)