1/*	$NetBSD: sereg.h,v 1.5 2003/05/03 18:11:04 wiz 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 */
41struct 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 */
70struct 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
97struct 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