lib/libsys/vm_map_phys.c

   1 #define _SYSTEM 1
   2 #include <lib.h>
   3 #include <sys/mman.h>
   4 #include <minix/syslib.h>
   5 #include <minix/vm.h>
   6 #include <stdarg.h>
   7 #include <string.h>
   8 #include <errno.h>
   9
  10 PUBLIC void *vm_map_phys(endpoint_t who, void *phaddr, size_t len)
  11 {
  12         message m;
  13         int r;
  14
  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 PUBLIC int vm_unmap_phys(endpoint_t who, void *vaddr, size_t len)
  27 {
  28         message m;
  29         int r;
  30
  31         m.VMUP_EP = who;
  32         m.VMUP_VADDR = vaddr;
  33
  34         return _taskcall(VM_PROC_NR, VM_UNMAP_PHYS, &m);
  35 }
  36