782a7670e9
We default to the (newer, more sane) 22.1184 MHz value, but set it from the iobzclock variable (in Hz), which is initialized from the IOBZCLOCK configuration option and patchable. XXX we should time the clock at system startup. - add ioblix_zbus to the GENERIC configuration.
168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/* $NetBSD: ioblix_zbus.c,v 1.3 2001/03/10 23:55:29 is Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Ignatios Souvatzis.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* IOBlix Zorro driver */
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/* XXX to be done: we need to probe the com clock speed! */
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/param.h>
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#include <machine/bus.h>
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#include <machine/conf.h>
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#include <amiga/include/cpu.h>
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#include <amiga/amiga/device.h>
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#include <amiga/amiga/drcustom.h>
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#include <amiga/dev/supio.h>
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#include <amiga/dev/zbusvar.h>
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struct iobz_softc {
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struct device sc_dev;
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struct bus_space_tag sc_bst;
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};
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int iobzmatch __P((struct device *, struct cfdata *, void *));
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void iobzattach __P((struct device *, struct device *, void *));
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int iobzprint __P((void *auxp, const char *));
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struct cfattach iobl_zbus_ca = {
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sizeof(struct iobz_softc), iobzmatch, iobzattach
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};
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int
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iobzmatch(parent, cfp, auxp)
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struct device *parent;
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struct cfdata *cfp;
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void *auxp;
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{
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struct zbus_args *zap;
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zap = auxp;
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if (zap->manid != 4711)
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return (0);
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if (zap->prodid != 1)
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return (0);
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return (1);
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}
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struct iobz_devs {
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char *name;
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unsigned off;
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int arg;
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} iobzdevices[] = {
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{ "com", 0x100, 24000000 }, /* XXX see below */
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{ "com", 0x108, 24000000 },
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{ "com", 0x110, 24000000 },
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{ "com", 0x118, 24000000 },
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{ "lpt", 0x200, 0 },
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{ "lpt", 0x300, 0 },
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{ 0, 0, 0}
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};
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#ifndef IOBZCLOCK
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#define IOBZCLOCK 22118400;
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#endif
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int iobzclock = IOBZCLOCK; /* patchable! */
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void
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iobzattach(parent, self, auxp)
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struct device *parent, *self;
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void *auxp;
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{
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struct iobz_softc *iobzsc;
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struct iobz_devs *iobzd;
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struct zbus_args *zap;
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struct supio_attach_args supa;
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extern const struct amiga_bus_space_methods amiga_bus_stride_16;
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volatile u_int8_t *p;
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iobzsc = (struct iobz_softc *)self;
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zap = auxp;
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if (parent)
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printf("\n");
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iobzsc->sc_bst.base = (u_long)zap->va;
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iobzsc->sc_bst.absm = &amiga_bus_stride_16;
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supa.supio_iot = &iobzsc->sc_bst;
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supa.supio_ipl = 6;
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iobzd = iobzdevices;
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while (iobzd->name) {
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supa.supio_name = iobzd->name;
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supa.supio_iobase = iobzd->off;
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supa.supio_arg = iobzclock /* XXX iobzd->arg */;
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config_found(self, &supa, iobzprint); /* XXX */
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++iobzd;
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}
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p = (volatile u_int8_t *)zap->va + 2;
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*p = ((*p) & 0x1F) | 0x80;
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}
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int
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iobzprint(auxp, pnp)
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void *auxp;
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const char *pnp;
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{
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struct supio_attach_args *supa;
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supa = auxp;
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if (pnp == NULL)
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return(QUIET);
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printf("%s at %s port 0x%02x",
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supa->supio_name, pnp, supa->supio_iobase);
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return(UNCONF);
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}
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