frame.h File Reference

#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Functions
struct frame *	alloc_frame (const char *identifier)
	Allocates a frame and returns a pointer to it. The allocated frame will be zeroed out.
void	free_frame (struct frame *frame)
	Frees a frame.
size_t	frame_to_pfn (struct frame *frame)
	Returns the PFN of a frame.
size_t	pfn_to_phys (size_t pfn)
	Converts a PFN to a physical address.
void	frame_init ()
	Initializes the frame allocator and memory map.

Function Documentation

alloc_frame()

struct frame * alloc_frame

(

const char *

identifier

)

Allocates a frame and returns a pointer to it. The allocated frame will be zeroed out.

Parameters

identifier

A string identifier for the frame (for debugging purposes).

Returns

A pointer to the allocated frame.

frame_init()

void frame_init

(

)

Initializes the frame allocator and memory map.

frame_to_pfn()

size_t frame_to_pfn

(

struct frame *

frame

)

Returns the PFN of a frame.

Parameters

frame

A pointer to the frame.

Returns

The PFN of the frame.

free_frame()

void free_frame

(

struct frame *

frame

)

Frees a frame.

Parameters

frame

A pointer to the frame to free.

Note

The frame will only be truly freed if its reference count drops to 0.

pfn_to_phys()

size_t pfn_to_phys

(

size_t

pfn

)

Converts a PFN to a physical address.

Parameters

pfn	The PFN to convert.

Returns

The physical address.