qemu/roms/SLOF/clients/net-snk/oflib/pci.c

   1 /******************************************************************************
   2  * Copyright (c) 2004, 2008 IBM Corporation
   3  * All rights reserved.
   4  * This program and the accompanying materials
   5  * are made available under the terms of the BSD License
   6  * which accompanies this distribution, and is available at
   7  * http://www.opensource.org/licenses/bsd-license.php
   8  *
   9  * Contributors:
  10  *     IBM Corporation - initial implementation
  11  *****************************************************************************/
  12
  13 #include <stdint.h>
  14 #include <rtas.h>
  15 #include <of.h>
  16 #include <pci.h>
  17 #include <string.h>
  18 #include <kernel.h>
  19 #include <cpu.h>
  20 #include <cache.h>
  21
  22 unsigned int read_io(void *addr, size_t sz)
  23 {
  24         unsigned int ret;
  25
  26         switch (sz) {
  27         case 1:
  28                 ret = ci_read_8(addr);
  29                 break;
  30         case 2:
  31                 ret = ci_read_16(addr);
  32                 break;
  33         case 4:
  34                 ret = ci_read_32(addr);
  35                 break;
  36         default:
  37                 ret = 0;
  38         }
  39
  40         return ret;
  41 }
  42
  43 int write_io(void *addr, unsigned int value, size_t sz)
  44 {
  45         switch (sz) {
  46         case 1:
  47                 ci_write_8(addr, value);
  48                 break;
  49         case 2:
  50                 ci_write_16(addr, value);
  51                 break;
  52         case 4:
  53                 ci_write_32(addr, value);
  54                 break;
  55         default:
  56                 return -1;
  57         }
  58
  59         return 0;
  60 }