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      1 /*	$NetBSD: sereg.h,v 1.6 2008/04/28 20:23:37 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Gordon W. Ross.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Sun3/E SCSI/Ethernet board.  This is a VME board with some memory,
     34  * an Intel Ether, and an NCR5380 SCSI with a cheap DMA engine.
     35  */
     36 
     37 /*****************************************************************
     38  * Register definitions for the SCSI portion.
     39  * (size=0x20)
     40  */
     41 struct se_regs {
     42 	u_char			ncrregs[8];
     43 	u_short			unused1;
     44 	u_short			dma_addr;	/* DMA offset register	*/
     45 	u_short			unused2;
     46 	u_short			dma_cntr;	/* DMA count down register */
     47 	u_short			unused3[5];
     48 	u_short			se_csr;		/* control/status register */
     49 	u_short			unused4;
     50 	u_short			se_ivec;	/* interrupt vector	*/
     51 };
     52 
     53 /*
     54  * SCSI Control and Status Register.
     55  * Note:
     56  *	(ro) 	indicates bit is read only.
     57  *	(rw)	indicates bit is read or write.
     58  */
     59 #define SE_CSR_SBC_IP		0x0200	/* (ro) sbc interrupt pending */
     60 #define SE_CSR_SEND 		0x0008	/* (rw) DMA dir, 1=to device */
     61 #define SE_CSR_INTR_EN		0x0004	/* (rw) interrupts enable */
     62 #define	SE_CSR_VCC  		0x0002	/* (ro) power signal to the chip */
     63 #define SE_CSR_SCSI_RES		0x0001	/* (rw) reset sbc and udc, 0=reset */
     64 
     65 
     66 /*****************************************************************
     67  * Register definitions for the Ethernet portion.
     68  * (size=0x100)
     69  */
     70 struct ie_regs {
     71 	u_short			ie_pad0;
     72 	u_short			ie_csr;
     73 	u_short			ie_pad1[7];
     74 	u_short			ie_ivec;	/* interrupt vector */
     75 	u_short			ie_pad3[128-10];
     76 };
     77 
     78 /*
     79  * Ether Control and Status Register.
     80  */
     81 #define IE_CSR_RESET		0x8000	/* board reset */
     82 #define IE_CSR_NOLOOP		0x4000	/* loopback disable */
     83 #define IE_CSR_ATTEN		0x2000	/* channel attention */
     84 #define IE_CSR_IENAB		0x1000	/* interrupt enable */
     85 #define IE_CSR_IPEND		0x0100	/* interrupt pending */
     86 
     87 
     88 /*****************************************************************
     89  * Register definitions for the entire SCSI/Ethernet board.
     90  * I had the impression that there were overlaps in this map,
     91  * which was the reason for existence of the "sebuf" driver.
     92  * Now it looks like the "sebuf" driver was unnecessary. XXX
     93  */
     94 
     95 #define SE_NCRBUFSIZE	0x10000
     96 #define SE_IEBUFSIZE	0x20000
     97 struct sebuf_regs {
     98 	char	se_scsi_buf[SE_NCRBUFSIZE];
     99 	struct se_regs se_scsi_regs;
    100 	char	se_pad[0x10000 - 0x120];
    101 	struct ie_regs se_eth_regs;
    102 	char	se_eth_buf[SE_IEBUFSIZE];
    103 };	/* 128KB total */
    104