iokit/Drivers/network/drvMaceEnet/MaceEnetHW.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1995-1996 NeXT Software, Inc.
  24  *
  25  * Inline definitions for the Apple Mace Ethernet Controller.
  26  *
  27  * HISTORY
  28  *
  29  * 11-Sept-97
  30  *      Created.
  31  */
  32
  33 #include "MaceEnetRegisters.h"
  34 #include "MaceEnetPrivate.h"
  35
  36 void WriteMaceRegister( IOPPCAddress ioEnetBase, u_int32_t reg_offset, u_int8_t data )
  37 {
  38         *((volatile u_int8_t *)ioEnetBase + reg_offset) = data;
  39         eieio();
  40 }
  41
  42
  43 volatile u_int8_t ReadMaceRegister( IOPPCAddress ioEnetBase, u_int32_t reg_offset )
  44 {
  45         return ((volatile u_int8_t *)ioEnetBase)[reg_offset] ;
  46 }