arch/ppc/boot/of1275/read.c

   1 /*
   2  * Copyright (C) Paul Mackerras 1997.
   3  * Copyright (C) Leigh Brown 2002.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version
   8  * 2 of the License, or (at your option) any later version.
   9  */
  10
  11 #include "of1275.h"
  12
  13 int
  14 read(ihandle instance, void *buf, int buflen)
  15 {
  16     struct prom_args {
  17         char *service;
  18         int nargs;
  19         int nret;
  20         ihandle instance;
  21         void *buf;
  22         int buflen;
  23         int actual;
  24     } args;
  25
  26     args.service = "read";
  27     args.nargs = 3;
  28     args.nret = 1;
  29     args.instance = instance;
  30     args.buf = buf;
  31     args.buflen = buflen;
  32     args.actual = -1;
  33     (*of_prom_entry)(&args);
  34     return args.actual;
  35 }