iokit/Drivers/network/drvPPCUniN/UniNEnetHW.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) 1998-1999 Apple Software, Inc.
  24  *
  25  * Miscellaneous definitions for the Sun GEM Ethernet controller.
  26  *
  27  * HISTORY
  28  *
  29  */
  30
  31 #include "UniNEnetPrivate.h"
  32
  33
  34 void xWriteUniNRegister( IOPPCAddress ioBaseEnet, u_int32_t reg_offset, u_int32_t data )
  35 {
  36     switch ( reg_offset >> 16 )
  37     {
  38         case 1:
  39             ((u_int8_t *) ioBaseEnet)[reg_offset & 0xffff] = data;
  40             break;
  41         case 2:
  42             ((u_int16_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 1] = OSSwapInt16( data );
  43             break;
  44         case 4:
  45             ((u_int32_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 2] = OSSwapInt32( data );
  46             break;
  47     }
  48     eieio();
  49 }
  50
  51
  52 volatile u_int32_t xReadUniNRegister( IOPPCAddress ioBaseEnet, u_int32_t reg_offset )
  53 {
  54     switch ( reg_offset >> 16 )
  55     {
  56         case 1:
  57             return ((u_int8_t *) ioBaseEnet)[reg_offset & 0xffff];
  58
  59         case 2:
  60             return OSSwapInt16( ((u_int16_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 1] );
  61
  62         case 4:
  63             return OSSwapInt32( ((u_int32_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 2] );
  64     }
  65
  66     return 0;
  67 }
  68
  69
  70 /*
  71  * Procedure for reading EEPROM
  72  */