minix/lib/syslib/vm_map_phys.c

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#define _SYSTEM 1
#include <lib.h>
#include <sys/mman.h>
#include <minix/vm.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
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PUBLIC void *vm_map_phys(endpoint_t who, void *phaddr, size_t len)
{
message m;
int r;
m.VMMP_EP = who;
m.VMMP_PHADDR = phaddr;
m.VMMP_LEN = len;
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r = _taskcall(VM_PROC_NR, VM_MAP_PHYS, &m);
if(r != OK) return MAP_FAILED;
return (void *) m.VMMP_VADDR_REPLY;
}
PUBLIC int vm_unmap_phys(endpoint_t who, void *vaddr, size_t len)
{
message m;
int r;
m.VMUP_EP = who;
m.VMUP_VADDR = vaddr;
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return _taskcall(VM_PROC_NR, VM_UNMAP_PHYS, &m);
}