lib/libsys/vm_map_phys.c

   1 #include "syslib.h"
   2
   3 #include <sys/mman.h>
   4 #include <minix/vm.h>
   5 #include <stdarg.h>
   6 #include <string.h>
   7
   8 void *
   9 vm_map_phys(endpoint_t who, void *phaddr, size_t len)
  10 {
  11         message m;
  12         int r;
  13
  14         memset(&m, 0, sizeof(m));
  15         m.VMMP_EP = who;
  16         m.VMMP_PHADDR = phaddr;
  17         m.VMMP_LEN = len;
  18
  19         r = _taskcall(VM_PROC_NR, VM_MAP_PHYS, &m);
  20
  21         if (r != OK) return MAP_FAILED;
  22
  23         return (void *) m.VMMP_VADDR_REPLY;
  24 }
  25
  26 int
  27 vm_unmap_phys(endpoint_t who, void *vaddr, size_t len)
  28 {
  29         message m;
  30
  31         memset(&m, 0, sizeof(m));
  32         m.VMUP_EP = who;
  33         m.VMUP_VADDR = vaddr;
  34
  35         return _taskcall(VM_PROC_NR, VM_UNMAP_PHYS, &m);
  36 }