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