physMemoryManagement.cpp File Reference

Helper functions to map and unmap physical memory regions. More...

#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/mman.h>
#include <CCRCodingUtils/include/errorManagement.h>
#include <memoryManagement/physMemoryManagement.h>

Functions
void *	mapPhysMemArea (uintptr_t areaBaseAddrPhys, size_t size)
	Maps the specified physical memory area to a virtual memory area. More...
int	unmapPhysMemArea (void *areaBaseAddrVirt, size_t size)
	Unmaps a physical memory area mapped using mapPhysMemArea() More...

Detailed Description

Helper functions to map and unmap physical memory regions.

Function Documentation

void* mapPhysMemArea	(	uintptr_t	areaBaseAddrPhys,
		size_t	size
	)

Maps the specified physical memory area to a virtual memory area.

Parameters

areaBaseAddrPhys	The physical base address of the area
size	The size of the area to map

Returns

The generated virtual address, or zero in case of error

int unmapPhysMemArea	(	void *	areaBaseAddrVirt,
		size_t	size
	)

Unmaps a physical memory area mapped using mapPhysMemArea()

Parameters

areaBaseAddrVirt	The virtual base address of the peripheral
size	The size of the mapped area

Returns

negative in case of error