arch/ppc-sam440/kernel/virtualtophysical.c

   1 #include <aros/kernel.h>
   2 #include <aros/libcall.h>
   3
   4 #include <kernel_base.h>
   5
   6 /*****************************************************************************
   7
   8     NAME */
   9 #include <proto/kernel.h>
  10
  11 AROS_LH1I(void *, KrnVirtualToPhysical,
  12
  13 /*  SYNOPSIS */
  14         AROS_LHA(void *, virtual, A0),
  15
  16 /*  LOCATION */
  17         struct KernelBase *, KernelBase, 20, Kernel)
  18
  19 /*  FUNCTION
  20
  21     INPUTS
  22
  23     RESULT
  24
  25     NOTES
  26
  27     EXAMPLE
  28
  29     BUGS
  30
  31     SEE ALSO
  32
  33     INTERNALS
  34
  35 ******************************************************************************/
  36 {
  37         AROS_LIBFUNC_INIT
  38
  39         uintptr_t virt = (uintptr_t)virtual;
  40         uintptr_t phys = virt;
  41
  42         if (virt >= 0xff000000)
  43                 phys = virt - 0xff000000;
  44
  45         return (void*)phys;
  46
  47         AROS_LIBFUNC_EXIT
  48 }