NetBSD/sys/arch/i386/pnpbios/fdc_pnpbios.c

187 lines
5.9 KiB
C

/* $NetBSD: fdc_pnpbios.c,v 1.2 2000/12/17 07:58:37 jmc Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* PNPBIOS attachment for the PC Floppy Controller driver.
*/
#include "rnd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/queue.h>
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/isa/fdcvar.h>
#include <i386/pnpbios/pnpbiosvar.h>
int fdc_pnpbios_match(struct device *, struct cfdata *, void *);
void fdc_pnpbios_attach(struct device *, struct device *, void *);
struct fdc_pnpbios_softc {
struct fdc_softc sc_fdc; /* base fdc device */
bus_space_handle_t sc_baseioh; /* base I/O handle */
};
struct cfattach fdc_pnpbios_ca = {
sizeof(struct fdc_pnpbios_softc), fdc_pnpbios_match,
fdc_pnpbios_attach,
};
int
fdc_pnpbios_match(struct device *parent,
struct cfdata *match,
void *aux)
{
struct pnpbiosdev_attach_args *aa = aux;
if (strcmp(aa->idstr, "PNP0700") == 0)
return (1);
return (0);
}
void
fdc_pnpbios_attach(struct device *parent,
struct device *self,
void *aux)
{
struct fdc_softc *fdc = (void *) self;
struct fdc_pnpbios_softc *pdc = (void *) self;
struct pnpbiosdev_attach_args *aa = aux;
int size, base;
printf("\n");
fdc->sc_ic = aa->ic;
if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot,
&pdc->sc_baseioh)) {
printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname);
return;
}
/*
* Start accounting for "odd" pnpbios's. Some probe as 4 ports,
* some as 6 and some don't give the ctl port back.
*/
if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) {
printf("%s: can't get iobase size\n", fdc->sc_dev.dv_xname);
return;
}
switch (size) {
/* Easy case. This matches right up with what the fdc code expects. */
case 4:
fdc->sc_ioh = pdc->sc_baseioh;
break;
/* Map a subregion so this all lines up with the fdc code. */
case 6:
if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4,
&fdc->sc_ioh)) {
printf("%s: unable to subregion I/O space\n",
fdc->sc_dev.dv_xname);
return;
}
break;
default:
printf ("%s: unknown size: %d of io mapping\n",
fdc->sc_dev.dv_xname, size);
return;
}
/*
* XXX: This is bad. If the pnpbios claims only 1 I/O range then it's
* omitting the controller I/O port. (One has to exist for there to
* be a working fdc). Just try and force the mapping in.
*/
if (aa->resc->numio == 1) {
if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) {
printf ("%s: can't get iobase\n",
fdc->sc_dev.dv_xname);
return;
}
if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0,
&fdc->sc_fdctlioh)) {
printf("%s: unable to force map CTL I/O space\n",
fdc->sc_dev.dv_xname);
return;
}
} else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot,
&fdc->sc_fdctlioh)) {
printf("%s: unable to map CTL I/O space\n",
fdc->sc_dev.dv_xname);
return;
}
if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) {
printf("%s: unable to get DMA channel\n",
fdc->sc_dev.dv_xname);
return;
}
pnpbios_print_devres(self, aa);
if (aa->resc->numio == 1)
printf("%s: ctl io %x didn't probe. Forced attach\n",
fdc->sc_dev.dv_xname, base + size + 1);
fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO,
fdcintr, fdc);
fdcattach(fdc);
}