/* $NetBSD: z8530var.h,v 1.1.1.1 1998/06/20 04:58:52 eeh Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)zsvar.h 8.1 (Berkeley) 6/11/93 */ #include #include struct zsc_softc { struct device zsc_dev; /* base device */ bus_space_tag_t zsc_bustag; /* bus space/dma tags */ bus_dma_tag_t zsc_dmatag; struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */ /* Machine-dependent part follows... */ struct evcnt zsc_intrcnt; /* count interrupts */ struct zs_chanstate zsc_cs_store[2]; }; /* * Functions to read and write individual registers in a channel. * The ZS chip requires a 1.6 uSec. recovery time between accesses. * On the SparcStation the recovery time is handled in hardware. * On the older Sun4 machine it isn't, and software must do it. * * However, it *is* a problem on some Sun4m's (i.e. the SS20) (XXX: why?). * Thus we leave in the delay (done in the functions below). * XXX: (ABB) Think about this more. * * The functions below could be macros instead if we are concerned * about the function call overhead where ZS_DELAY does nothing. */ u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg)); u_char zs_read_csr __P((struct zs_chanstate *cs)); u_char zs_read_data __P((struct zs_chanstate *cs)); void zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val)); void zs_write_csr __P((struct zs_chanstate *cs, u_char val)); void zs_write_data __P((struct zs_chanstate *cs, u_char val)); /* The sparc has splzs() in psl.h */ /* We want to call it "zs" instead of "zsc" (sigh). */ #ifndef ZSCCF_CHANNEL #define ZSCCF_CHANNEL 0 #define ZSCCF_CHANNEL_DEFAULT -1 #endif