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/* $OpenBSD: boca.c,v 1.5 1996/03/19 21:10:07 mickey Exp $ */
/* $NetBSD: boca.c,v 1.6 1995/12/24 02:31:11 mycroft Exp $ */
/*
* Copyright (c) 1995 Charles Hannum. All rights reserved.
*
* This code is derived from public-domain software written by
* Roland McGrath, and information provided by David Muir Sharnoff.
*
* 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 Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <machine/pio.h>
#include <dev/isa/isavar.h>
struct boca_softc {
struct device sc_dev;
void *sc_ih;
int sc_iobase;
int sc_alive; /* mask of slave units attached */
void *sc_slaves[8]; /* com device unit numbers */
};
int bocaprobe();
void bocaattach();
int bocaintr __P((void *));
struct cfdriver bocacd = {
NULL, "boca", bocaprobe, bocaattach, DV_TTY, sizeof(struct boca_softc)
};
int
bocaprobe(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct isa_attach_args *ia = aux;
/*
* Do the normal com probe for the first UART and assume
* its presence means there is a multiport board there.
* XXX Needs more robustness.
*/
ia->ia_iosize = 8 * 8;
return (comprobe1(ia->ia_iobase));
}
struct boca_attach_args {
int ba_slave;
};
int
bocasubmatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct boca_softc *sc = (void *)parent;
struct cfdata *cf = match;
struct isa_attach_args *ia = aux;
struct boca_attach_args *ba = ia->ia_aux;
if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != ba->ba_slave)
return (0);
return ((*cf->cf_driver->cd_match)(parent, match, ia));
}
int
bocaprint(aux, boca)
void *aux;
char *boca;
{
struct isa_attach_args *ia = aux;
struct boca_attach_args *ba = ia->ia_aux;
printf(" slave %d", ba->ba_slave);
}
void
bocaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct boca_softc *sc = (void *)self;
struct isa_attach_args *ia = aux;
struct boca_attach_args ba;
struct isa_attach_args isa;
int subunit;
sc->sc_iobase = ia->ia_iobase;
printf("\n");
isa.ia_aux = &ba;
for (ba.ba_slave = 0; ba.ba_slave < 8; ba.ba_slave++) {
struct cfdata *cf;
isa.ia_iobase = sc->sc_iobase + 8 * ba.ba_slave;
isa.ia_iosize = 0x666;
isa.ia_irq = IRQUNK;
isa.ia_drq = DRQUNK;
isa.ia_msize = 0;
if ((cf = config_search(bocasubmatch, self, &isa)) != 0) {
subunit = cf->cf_unit; /* can change if unit == * */
config_attach(self, cf, &isa, bocaprint);
sc->sc_slaves[ba.ba_slave] =
cf->cf_driver->cd_devs[subunit];
sc->sc_alive |= 1 << ba.ba_slave;
}
}
sc->sc_ih = isa_intr_establish(ia->ia_irq, IST_EDGE, IPL_TTY, bocaintr,
sc);
}
int
bocaintr(arg)
void *arg;
{
struct boca_softc *sc = arg;
int iobase = sc->sc_iobase;
int alive = sc->sc_alive;
int bits;
bits = inb(iobase | 0x07) & alive;
if (bits == 0)
return (0);
for (;;) {
#define TRY(n) \
if (bits & (1 << (n))) \
comintr(sc->sc_slaves[n]);
TRY(0);
TRY(1);
TRY(2);
TRY(3);
TRY(4);
TRY(5);
TRY(6);
TRY(7);
#undef TRY
bits = inb(iobase | 0x07) & alive;
if (bits == 0)
return (1);
}
}
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