1 /* $NetBSD: z8530var.h,v 1.2 1999/03/16 16:30:21 minoura Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Minoura Makoto 5 * Copyright (c) 1994 Gordon W. Ross 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This software was developed by the Computer Systems Engineering group 10 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 11 * contributed to Berkeley. 12 * 13 * All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Lawrence Berkeley Laboratory. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 3. All advertising materials mentioning features or use of this software 27 * must display the following acknowledgement: 28 * This product includes software developed by the University of 29 * California, Berkeley and its contributors. 30 * 4. Neither the name of the University nor the names of its contributors 31 * may be used to endorse or promote products derived from this software 32 * without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 35 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 36 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 37 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 38 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 39 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 40 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 42 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 43 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 44 * SUCH DAMAGE. 45 * 46 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93 47 */ 48 49 #include <machine/bus.h> 50 #include <dev/ic/z8530sc.h> 51 52 53 #define ZS_DELAY() delay(2) 54 55 /* The layout of this is hardware-dependent (padding, order). */ 56 struct zschan { 57 u_char zc_xxx0; 58 volatile u_char zc_csr; /* ctrl,status, and indirect access */ 59 u_char zc_xxx1; 60 volatile u_char zc_data; /* data */ 61 }; 62 struct zsdevice { 63 /* Yes, they are backwards. */ 64 struct zschan zs_chan_b; 65 struct zschan zs_chan_a; 66 }; 67 68 struct zsc_softc { 69 struct device zsc_dev; /* required first: base device */ 70 struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */ 71 /* Machine-dependent part follows... */ 72 struct zs_chanstate zsc_cs_store[2]; 73 struct zsdevice *zsc_addr; 74 }; 75 76 /* 77 * Functions to read and write individual registers in a channel. 78 * The ZS chip requires a 1.6 uSec. recovery time between accesses, 79 * and the Sun3 hardware does NOT take care of this for you. 80 * The delay is now handled inside the chip access functions. 81 * These could be inlines, but with the delay, speed is moot. 82 */ 83 84 u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg)); 85 u_char zs_read_csr __P((struct zs_chanstate *cs)); 86 u_char zs_read_data __P((struct zs_chanstate *cs)); 87 88 void zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val)); 89 void zs_write_csr __P((struct zs_chanstate *cs, u_char val)); 90 void zs_write_data __P((struct zs_chanstate *cs, u_char val)); 91 92 /* 93 * Physical address for built-in ZS. 94 */ 95 #define ZSCN_PHYSADDR 0xe98004 /* for serial console */ 96 #define ZSMS_PHYSADDR 0xe98000 /* for mouse */ 97