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      1 /* 	$NetBSD: temacvar.h,v 1.2 2019/04/11 14:38:05 kamil Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2006 Jachym Holecek
      5  * All rights reserved.
      6  *
      7  * Written for "DSP&FPGA Custom Design".
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  *
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  *
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _VIRTEX_DEV_TEMACVAR_H_
     33 #define _VIRTEX_DEV_TEMACVAR_H_
     34 
     35 /* TEMAC specific fields in Rx CDMAC descriptor. */
     36 #define desc_rxstat 		desc_user3
     37 #define RXSTAT_GOOD 		0x80000000 	/* Good frame */
     38 #define RXSTAT_BAD 		0x40000000 	/* Bad frame */
     39 #define RXSTAT_FLOW 		0x20000000 	/* Flow control frame */
     40 #define RXSTAT_VLAN 		0x10000000 	/* Contains VLAN tag */
     41 #define RXSTAT_BADCRC 		0x08000000 	/* Failed FCS validation */
     42 #define RXSTAT_TRUNC 		0x04000000 	/* Truncated, FIFO overflow */
     43 #define RXSTAT_RAWCSUM_MASK 	0x0000ffff 	/* Precalculated raw csum */
     44 
     45 #define RXSTAT_SICK 		(RXSTAT_BAD | RXSTAT_FLOW | RXSTAT_BADCRC | \
     46 				 RXSTAT_TRUNC)
     47 
     48 #define desc_rxsize 		desc_user4
     49 #define RXSIZE_MASK 		0x0000ffff 	/* Length of frame in bytes */
     50 
     51 /* TEMAC specific fields in Tx CDMAC descriptor. */
     52 #define desc_txcon 		desc_user0 	/* Careful: overlayed w/ stat */
     53 #define TXCON_TCP 		0x0002 		/* TCP segment, UDP otherwise */
     54 #define TXCON_CSUM 		0x0001 		/* Calculate checksum in hw */
     55 
     56 #define desc_txcsum 		desc_user1
     57 #define CSUM_INSERT_MASK 	0x003ff 	/* Offset where to insert cs */
     58 #define CSUM_START_MASK 	0x003ff 	/* Offset where calc starts */
     59 #define CSUM_START_OFFS 	16
     60 
     61 #define desc_txcsumini 		desc_user2 	/* Initial value for cs calc */
     62 #define CSUMINI_MASK 		0xffff
     63 
     64 #endif /* _VIRTEX_DEV_TEMACVAR_H_ */
     65