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Change the attach routine so it handles all the known cases that pnpbios

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returns for floppy controllers i/o ports. i.e.

1. 1 range of length 4 (which conveniently "forgets" the ctl i/o port),
2. 2 ranges: 1 of length 4 and the ctl i/o port.
3. 1 range of length 6 which goes to the end of the ctl i/o.

Make this line up with the MI fdc code by mapping in a range of 4 on the
base i/o and then either direct or submapping the ctl i/o. In the one case
where the BIOS lies and says it's not there just map it in anyways. (but note
the fact to the end user).
This commit is contained in:
jmc 2000-12-17 07:58:37 +00:00
parent 2967c3fac3
commit 50445038df
1 changed files with 71 additions and 7 deletions
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78
sys/arch/i386/pnpbios/fdc_pnpbios.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: fdc_pnpbios.c,v 1.1 2000/04/23 17:50:00 thorpej Exp $ */
/* $NetBSD: fdc_pnpbios.c,v 1.2 2000/12/17 07:58:37 jmc Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
@ -65,8 +65,15 @@
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_softc), fdc_pnpbios_match,
sizeof(struct fdc_pnpbios_softc), fdc_pnpbios_match,
fdc_pnpbios_attach,
};
@ -89,20 +96,74 @@ fdc_pnpbios_attach(struct device *parent,
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, &fdc->sc_ioh)) {
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;
}
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",
/*
* 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;
}
@ -114,6 +175,9 @@ fdc_pnpbios_attach(struct device *parent,
}
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);