ahdlc.h

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00001 #ifndef _DEV_AHDLC_H_
00002 #define _DEV_AHDLC_H_
00003 
00004 /*
00005  * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. Neither the name of the copyright holders nor the names of
00017  *    contributors may be used to endorse or promote products derived
00018  *    from this software without specific prior written permission.
00019  *
00020  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00021  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00023  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00024  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00025  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00027  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00028  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00029  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00030  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00031  * SUCH DAMAGE.
00032  *
00033  * For additional information see http://www.ethernut.de/
00034  */
00035 
00036 /*
00037  * $Log: ahdlc.h,v $
00038  * Revision 1.1.1.1  2003/05/09 14:41:05  haraldkipp
00039  * Initial using 3.2.1
00040  *
00041  * Revision 1.2  2003/05/06 18:40:28  harald
00042  * Unused items removed
00043  *
00044  * Revision 1.1  2003/03/31 14:53:23  harald
00045  * Prepare release 3.1
00046  *
00047  */
00048 
00049 #include <dev/netbuf.h>
00050 #include <net/if_var.h>
00051 
00052 
00058 /*
00059  * Significant octet values.
00060  */
00061 #define AHDLC_ALLSTATIONS 0xff    
00062 #define AHDLC_UI          0x03    
00063 #define AHDLC_FLAG        0x7e    
00064 #define AHDLC_ESCAPE      0x7d    
00065 #define AHDLC_TRANS       0x20    
00067 /*
00068  * Values for FCS calculations.
00069  */
00070 #define AHDLC_INITFCS     0xffff  
00071 #define AHDLC_GOODFCS     0xf0b8  
00079 struct _AHDLCDCB {
00080     
00083     u_long dcb_modeflags;
00084 
00087     u_long dcb_statusflags;
00088 
00091     u_long dcb_rtimeout;
00092 
00095     u_long dcb_wtimeout;
00096 
00102     HANDLE dcb_tx_rdy;
00103 
00109     HANDLE dcb_rx_rdy;
00110 
00116     u_char dcb_base;
00117 
00123     volatile u_char *dcb_rx_buf;
00124     
00129     volatile u_char dcb_rx_idx;
00130 
00133     u_char dcb_rd_idx;
00134 
00137     u_char *dcb_tx_buf;
00138 
00143     volatile u_char dcb_tx_idx;
00144 
00147     u_char dcb_wr_idx;
00148 
00154     HANDLE dcb_mf_evt;
00155 
00158     u_long dcb_rx_accm;         
00159 
00162     u_long dcb_tx_accm;
00163 
00166     u_short dcb_rx_mru;
00167 
00170     u_short dcb_tx_mru;
00171 
00172 };
00173 
00177 typedef struct _AHDLCDCB AHDLCDCB;
00178 
00179 
00180 #endif
00181 

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