1 /* $NetBSD: zsvar.h,v 1.12 2008/04/28 20:23:29 martin 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 * 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 * Non-exported definitons common to the different attachment 34 * types for the SCC on the Motorola MVME series of computers. 35 */ 36 37 /* 38 * The MVME-147 provides a 5 MHz clock to the SCC chips. 39 */ 40 #define PCLK_147 5000000 /* PCLK pin input clock rate */ 41 42 /* 43 * The MVME-162 provides a 10 MHz clock to the SCC chips. 44 */ 45 #define PCLK_162 10000000 /* PCLK pin input clock rate */ 46 47 /* 48 * SCC should interrupt host at level 4. 49 */ 50 #define ZSHARD_PRI 4 51 52 /* 53 * No delay needed when writing SCC registers. 54 */ 55 #define ZS_DELAY() 56 57 /* 58 * XXX Make cnprobe a little easier. 59 */ 60 #define NZSC 2 61 62 /* 63 * The layout of this is hardware-dependent (padding, order). 64 */ 65 struct zschan { 66 volatile u_char *zc_csr; /* ctrl,status, and indirect access */ 67 volatile u_char *zc_data; /* data */ 68 }; 69 70 struct zsdevice { 71 /* Yes, they are backwards. */ 72 struct zschan zs_chan_b; 73 struct zschan zs_chan_a; 74 }; 75 76 /* Globals exported from zs.c */ 77 extern u_char zs_init_reg[]; 78 79 /* Functions exported to ASIC-specific drivers. */ 80 void zs_config(struct zsc_softc *, struct zsdevice *, int, int); 81 void zs_cnconfig(int, int, struct zsdevice *, int); 82 #ifdef MVME147 83 int zshard_shared(void *); 84 #endif 85 #if defined(MVME162) || defined(MVME172) 86 int zshard_unshared(void *); 87 #endif 88