1 /* $NetBSD: zsvar.h,v 1.3 2003/08/07 16:29:52 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93 41 */ 42 43 #include <machine/bus.h> 44 #include <dev/ic/z8530sc.h> 45 #include <sun2/dev/zsreg.h> 46 47 /* 48 * Need to override cn_console_dev() for zstty and zskbd. 49 */ 50 #ifdef cn_isconsole 51 #undef cn_isconsole 52 #endif 53 extern struct consdev *cn_hw; 54 extern struct consdev *cn_tab; 55 #define cn_isconsole(d) ((d) == cn_tab->cn_dev || (d) == cn_hw->cn_dev) 56 57 struct zsc_softc { 58 struct device zsc_dev; /* base device */ 59 bus_space_tag_t zsc_bustag; /* bus space/DMA tags */ 60 bus_dma_tag_t zsc_dmatag; 61 struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */ 62 63 /* Machine-dependent part follows... */ 64 void *zsc_softintr; 65 int zsc_promunit; /* PROM's view of zs devices */ 66 int zsc_node; /* PROM node, if any */ 67 struct evcnt zsc_intrcnt; /* count interrupts */ 68 struct zs_chanstate zsc_cs_store[2]; 69 }; 70 71 /* MI function to attach a zs. */ 72 void zs_attach __P((struct zsc_softc *, struct zsdevice *, int)); 73 74 /* MD function to get any console flags for a zs. */ 75 int zs_console_flags __P((int, int, int)); 76 77 /* MD function that says what is attached to a zs. */ 78 int zs_peripheral_type __P((int, int, int)); 79 #define ZS_PERIPHERAL_UNKNOWN 0 80 #define ZS_PERIPHERAL_SUNKBD 1 81 #define ZS_PERIPHERAL_SUNMS 2 82 83 /* 84 * Functions to read and write individual registers in a channel. 85 * The ZS chip requires a 1.6 uSec. recovery time between accesses. 86 * On the SparcStation the recovery time is handled in hardware. 87 * On the older Sun[234] machines it isn't, and software must do it. 88 * 89 * However, it *is* a problem on some Sun4m's (i.e. the SS20) (XXX: why?). 90 * Thus we leave in the delay (done in the functions below). 91 * XXX: (ABB) Think about this more. 92 * 93 * The functions below could be macros instead if we are concerned 94 * about the function call overhead where ZS_DELAY does nothing. 95 */ 96 97 u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg)); 98 u_char zs_read_csr __P((struct zs_chanstate *cs)); 99 u_char zs_read_data __P((struct zs_chanstate *cs)); 100 101 void zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val)); 102 void zs_write_csr __P((struct zs_chanstate *cs, u_char val)); 103 void zs_write_data __P((struct zs_chanstate *cs, u_char val)); 104 105 /* Everyone has splzs() in psl.h */ 106 107 /* We want to call it "zs" instead of "zsc" (sigh). */ 108 #ifndef ZSCCF_CHANNEL 109 #define ZSCCF_CHANNEL 0 110 #define ZSCCF_CHANNEL_DEFAULT -1 111 #endif 112