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