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Annotation of XNU/iokit/Drivers/network/drvPPCUniN/UniNEnetHW.cpp, revision 1.1.1.1

1.1       root        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 WriteUniNRegister( 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] = EndianSwap16( data );
                     43:             break; 
                     44:         case 4:
                     45:             ((u_int32_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 2] = EndianSwap32( data );
                     46:             break; 
                     47:     }
                     48:     eieio();
                     49: }
                     50: 
                     51: 
                     52: volatile u_int32_t ReadUniNRegister( 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 EndianSwap16( ((u_int16_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 1] );
                     61:  
                     62:         case 4:
                     63:             return EndianSwap32( ((u_int32_t *)ioBaseEnet)[(reg_offset & 0xFFFF) >> 2] );
                     64:     }
                     65: 
                     66:     return 0;
                     67: }
                     68: 
                     69: 
                     70: /*
                     71:  * Procedure for reading EEPROM 
                     72:  */

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