1 /* $NetBSD: zsvar.h,v 1.4 1998/01/12 19:51:16 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * Non-exported definitons common to the different attachment 41 * types for the SCC on the Motorola MVME series of computers. 42 */ 43 44 /* 45 * The MVME provides a 4.9152 MHz clock to the SCC chips. 46 */ 47 #define PCLK (9600 * 512) /* PCLK pin input clock rate */ 48 49 /* 50 * SCC should interrupt host at level 4. 51 */ 52 #define ZSHARD_PRI 4 53 54 /* 55 * No delay needed when writing SCC registers. 56 */ 57 #define ZS_DELAY() 58 59 /* 60 * XXX Make cnprobe a little easier. 61 */ 62 #define NZSC 2 63 64 /* 65 * The layout of this is hardware-dependent (padding, order). 66 */ 67 struct zschan { 68 volatile u_char zc_csr; /* ctrl,status, and indirect access */ 69 volatile u_char zc_data; /* data */ 70 }; 71 72 struct zsdevice { 73 /* Yes, they are backwards. */ 74 struct zschan zs_chan_b; 75 struct zschan zs_chan_a; 76 }; 77 78 /* Globals exported from zs.c */ 79 extern u_char zs_init_reg[]; 80 81 /* Functions exported to ASIC-specific drivers. */ 82 void zs_config __P((struct zsc_softc *, struct zschan *(*)(int, int))); 83 void zs_cnconfig __P((int, int, struct zschan *)); 84 int zshard __P((void *)); 85 int zssoft __P((void *)); 86