1 /* $NetBSD: espreg.h,v 1.1 2001/12/04 20:47:58 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jaromir Dolecek. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * MCA NCR 53C90 86C01 DMA controller registers. 41 * 42 * Information got from Tymm Twillman <tymm@computer.org>'s 43 * Linux MCA NC53c90 driver drivers/scsi/mca_53c9x.c. 44 */ 45 46 #define N86C01_CARDID_LOW 0x00 /* CardId, lower byte */ 47 48 #define N86C01_CARDID_HIGH 0x01 /* CardId, high byte */ 49 50 #define N86C01_MODE_ENABLE 0x02 /* Mode enable register */ 51 #define N86C01_DATA_WIDTH 0x80 /* data width - 1=16 0=8 */ 52 #define N86C01_INTR_ENABLE 0x40 /* enable inrerrupts 1=enable*/ 53 #define N86C01_INTR_SELECT_MSK 0x30 /* IRQ select - see ADF */ 54 #define N86C01_IOADDR_MSK 0x0e /* Base Address - see ADF */ 55 #define N86C01_CARD_ENABLE 0x01 /* Card enable - 1=enabled */ 56 57 #define N86C01_DMA_CTRL 0x03 /* DMA control */ 58 #define N86C01_DMA_ENABLE 0x80 /* DMA enable - 1=enabled */ 59 #define N86C01_PREEMPT_CNT_MSK 0x60 60 /* Preemt Count Select - number of transfers to complete after 61 * the chip is preempted on MCA bus 62 * 0 0 = 0 63 * 0 1 = 1 64 * 1 0 = 3 65 * 1 1 = 7 66 */ 67 #define N86C01_FAIRNESS_EN 0x10 /* Fairness enable 1=enable */ 68 #define N86C01_DMA_ARB_MSK 0x0f /* DMA Arbitration lvl */ 69 70 #define N86C01_GENERAL 0x04 /* General purpose register */ 71 /* Bits 7,6 apply to SCSI Id selection in ADF, 5-3 user definable, 2-0 reserv*/ 72 73 #define N86C01_PIO 0x0a /* IO-based DMA, PIO */ 74 75 #define N86C01_STATUS 0x0c /* Status */ 76 #define N86C01_DMA_PEND 0x02 /* DMA pending 1=pending */ 77 #define N86C01_IRQ_PEND 0x01 /* IRQ pending 0=pending */ 78