104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
/* $NetBSD: sereg.h,v 1.6 2008/04/28 20:23:37 martin Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Gordon W. Ross.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Sun3/E SCSI/Ethernet board. This is a VME board with some memory,
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* an Intel Ether, and an NCR5380 SCSI with a cheap DMA engine.
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*/
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/*****************************************************************
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* Register definitions for the SCSI portion.
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* (size=0x20)
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*/
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struct se_regs {
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u_char ncrregs[8];
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u_short unused1;
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u_short dma_addr; /* DMA offset register */
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u_short unused2;
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u_short dma_cntr; /* DMA count down register */
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u_short unused3[5];
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u_short se_csr; /* control/status register */
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u_short unused4;
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u_short se_ivec; /* interrupt vector */
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};
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/*
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* SCSI Control and Status Register.
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* Note:
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* (ro) indicates bit is read only.
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* (rw) indicates bit is read or write.
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*/
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#define SE_CSR_SBC_IP 0x0200 /* (ro) sbc interrupt pending */
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#define SE_CSR_SEND 0x0008 /* (rw) DMA dir, 1=to device */
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#define SE_CSR_INTR_EN 0x0004 /* (rw) interrupts enable */
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#define SE_CSR_VCC 0x0002 /* (ro) power signal to the chip */
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#define SE_CSR_SCSI_RES 0x0001 /* (rw) reset sbc and udc, 0=reset */
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/*****************************************************************
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* Register definitions for the Ethernet portion.
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* (size=0x100)
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*/
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struct ie_regs {
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u_short ie_pad0;
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u_short ie_csr;
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u_short ie_pad1[7];
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u_short ie_ivec; /* interrupt vector */
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u_short ie_pad3[128-10];
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};
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/*
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* Ether Control and Status Register.
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*/
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#define IE_CSR_RESET 0x8000 /* board reset */
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#define IE_CSR_NOLOOP 0x4000 /* loopback disable */
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#define IE_CSR_ATTEN 0x2000 /* channel attention */
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#define IE_CSR_IENAB 0x1000 /* interrupt enable */
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#define IE_CSR_IPEND 0x0100 /* interrupt pending */
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/*****************************************************************
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* Register definitions for the entire SCSI/Ethernet board.
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* I had the impression that there were overlaps in this map,
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* which was the reason for existence of the "sebuf" driver.
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* Now it looks like the "sebuf" driver was unnecessary. XXX
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*/
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#define SE_NCRBUFSIZE 0x10000
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#define SE_IEBUFSIZE 0x20000
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struct sebuf_regs {
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char se_scsi_buf[SE_NCRBUFSIZE];
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struct se_regs se_scsi_regs;
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char se_pad[0x10000 - 0x120];
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struct ie_regs se_eth_regs;
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char se_eth_buf[SE_IEBUFSIZE];
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}; /* 128KB total */
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