188 lines
6.0 KiB
C
188 lines
6.0 KiB
C
/* $NetBSD: fdc_pnpbios.c,v 1.8 2003/09/25 19:06:19 mycroft 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 Jason R. Thorpe.
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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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/*
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* PNPBIOS attachment for the PC Floppy Controller driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: fdc_pnpbios.c,v 1.8 2003/09/25 19:06:19 mycroft Exp $");
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#include "rnd.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/queue.h>
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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/isa/fdcvar.h>
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#include <i386/pnpbios/pnpbiosvar.h>
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int fdc_pnpbios_match(struct device *, struct cfdata *, void *);
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void fdc_pnpbios_attach(struct device *, struct device *, void *);
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struct fdc_pnpbios_softc {
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struct fdc_softc sc_fdc; /* base fdc device */
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bus_space_handle_t sc_baseioh; /* base I/O handle */
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};
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CFATTACH_DECL(fdc_pnpbios, sizeof(struct fdc_pnpbios_softc),
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fdc_pnpbios_match, fdc_pnpbios_attach, NULL, NULL);
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int
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fdc_pnpbios_match(struct device *parent,
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struct cfdata *match,
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void *aux)
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{
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struct pnpbiosdev_attach_args *aa = aux;
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if (strcmp(aa->idstr, "PNP0700") == 0)
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return (1);
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return (0);
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}
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void
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fdc_pnpbios_attach(struct device *parent,
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struct device *self,
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void *aux)
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{
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struct fdc_softc *fdc = (void *) self;
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struct fdc_pnpbios_softc *pdc = (void *) self;
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struct pnpbiosdev_attach_args *aa = aux;
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int size, base;
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printf("\n");
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fdc->sc_ic = aa->ic;
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if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot,
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&pdc->sc_baseioh)) {
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printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname);
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return;
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}
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/*
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* Start accounting for "odd" pnpbios's. Some probe as 4 ports,
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* some as 6 and some don't give the ctl port back.
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*/
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if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) {
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printf("%s: can't get iobase size\n", fdc->sc_dev.dv_xname);
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return;
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}
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switch (size) {
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/* Easy case. This matches right up with what the fdc code expects. */
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case 4:
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fdc->sc_ioh = pdc->sc_baseioh;
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break;
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/* Map a subregion so this all lines up with the fdc code. */
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case 6:
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if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4,
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&fdc->sc_ioh)) {
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printf("%s: unable to subregion I/O space\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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break;
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default:
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printf ("%s: unknown size: %d of io mapping\n",
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fdc->sc_dev.dv_xname, size);
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return;
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}
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/*
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* XXX: This is bad. If the pnpbios claims only 1 I/O range then it's
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* omitting the controller I/O port. (One has to exist for there to
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* be a working fdc). Just try and force the mapping in.
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*/
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if (aa->resc->numio == 1) {
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if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) {
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printf ("%s: can't get iobase\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0,
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&fdc->sc_fdctlioh)) {
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printf("%s: unable to force map CTL I/O space\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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} else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot,
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&fdc->sc_fdctlioh)) {
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printf("%s: unable to map CTL I/O space\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) {
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printf("%s: unable to get DMA channel\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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pnpbios_print_devres(self, aa);
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if (aa->resc->numio == 1)
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printf("%s: ctl io %x didn't probe. Forced attach\n",
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fdc->sc_dev.dv_xname, base + size + 1);
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fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO,
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fdcintr, fdc);
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fdcattach(fdc);
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}
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