1 /* $NetBSD: zsvar.h,v 1.14 2024/01/19 03:59:47 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 * 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 definitions common to the different attachment 34 * types for the SCC on the Motorola MVME series of computers. 35 */ 36 37 #include "opt_mvmeconf.h" 38 39 /* 40 * The MVME-147 provides a 5 MHz clock to the SCC chips. 41 */ 42 #define PCLK_147 5000000 /* PCLK pin input clock rate */ 43 44 /* 45 * The MVME-162 provides a 10 MHz clock to the SCC chips. 46 */ 47 #define PCLK_162 10000000 /* 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(struct zsc_softc *, struct zsdevice *, int, int); 83 void zs_cnconfig(int, int, struct zsdevice *, int); 84 #ifdef MVME147 85 int zshard_shared(void *); 86 #endif 87 #if defined(MVME162) || defined(MVME172) 88 int zshard_unshared(void *); 89 #endif 90