1 /* $OpenBSD: z8530var.h,v 1.1 2017/11/02 14:04:24 mpi Exp $ */ 2 /* $NetBSD: z8530var.h,v 1.9 2008/03/29 19:15:34 tsutsui Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This software was developed by the Computer Systems Engineering group 9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 10 * contributed to Berkeley. 11 * 12 * All advertising materials mentioning features or use of this software 13 * must display the following acknowledgement: 14 * This product includes software developed by the University of 15 * California, Lawrence Berkeley Laboratory. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93 42 */ 43 44 /* 45 * Copyright (c) 1994 Gordon W. Ross 46 * 47 * This software was developed by the Computer Systems Engineering group 48 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 49 * contributed to Berkeley. 50 * 51 * All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Lawrence Berkeley Laboratory. 55 * 56 * Redistribution and use in source and binary forms, with or without 57 * modification, are permitted provided that the following conditions 58 * are met: 59 * 1. Redistributions of source code must retain the above copyright 60 * notice, this list of conditions and the following disclaimer. 61 * 2. Redistributions in binary form must reproduce the above copyright 62 * notice, this list of conditions and the following disclaimer in the 63 * documentation and/or other materials provided with the distribution. 64 * 3. All advertising materials mentioning features or use of this software 65 * must display the following acknowledgement: 66 * This product includes software developed by the University of 67 * California, Berkeley and its contributors. 68 * 4. Neither the name of the University nor the names of its contributors 69 * may be used to endorse or promote products derived from this software 70 * without specific prior written permission. 71 * 72 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 73 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 74 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 75 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 76 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 77 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 78 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 79 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 80 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 81 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 82 * SUCH DAMAGE. 83 * 84 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93 85 */ 86 87 /* 88 * XXX XXX XXX THIS DOES NOT WORK WITH MULTIPLE ATTACHMENTS!!! XXX XXX XXX 89 */ 90 91 #include <dev/ic/z8530sc.h> 92 93 struct zsc_softc { 94 struct device zsc_dev; /* required: base device */ 95 struct zs_chanstate *zsc_cs[2]; /* channel soft state */ 96 /* Machine-dependent part follows... */ 97 int zsc_addroffset; /* used as "cookie" to identify scc */ 98 void *zsc_sih; /* softinterrupt handle */ 99 }; 100 101 /* 102 * Functions to read and write individual registers in a channel. 103 * The ZS chip requires a 1.6 uSec. recovery time between accesses, 104 * and the Alpha TC hardware does NOT take care of this for you. 105 * The delay is now handled inside the chip access functions. 106 * These could be inlines, but with the delay, speed is moot. 107 */ 108 109 uint8_t zs_read_reg(struct zs_chanstate *, uint8_t); 110 uint8_t zs_read_csr(struct zs_chanstate *); 111 uint8_t zs_read_data(struct zs_chanstate *); 112 113 void zs_write_reg(struct zs_chanstate *, uint8_t, uint8_t); 114 void zs_write_csr(struct zs_chanstate *, uint8_t); 115 void zs_write_data(struct zs_chanstate *, uint8_t); 116 117 /* Interrupt priority for the SCC chip */ 118 #define splzs() spltty() 119 #define IPL_ZS IPL_TTY 120