minix/lib/libsys/vm_map_phys.c

#include "syslib.h"

#include <sys/mman.h>
#include <minix/vm.h>
#include <stdarg.h>
#include <string.h>

void *
vm_map_phys(endpoint_t who, void *phaddr, size_t len)
{
	message m;
	int r;

	memset(&m, 0, sizeof(m));
	m.m_lsys_vm_map_phys.ep = who;
	m.m_lsys_vm_map_phys.phaddr = phaddr;
	m.m_lsys_vm_map_phys.len = len;

	r = _taskcall(VM_PROC_NR, VM_MAP_PHYS, &m);

	if (r != OK) return MAP_FAILED;

	return m.m_lsys_vm_map_phys.reply;
}

int
vm_unmap_phys(endpoint_t who, void *vaddr, size_t len)
{
	message m;

	memset(&m, 0, sizeof(m));
	m.m_lsys_vm_unmap_phys.ep = who;
	m.m_lsys_vm_unmap_phys.vaddr = vaddr;

	return _taskcall(VM_PROC_NR, VM_UNMAP_PHYS, &m);
}