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/* $OpenBSD: asio.c,v 1.1 2002/03/06 16:09:46 jason Exp $ */
/*
* Copyright (c) 2002 Jason L. Wright (jason@thought.net)
* All rights reserved.
*
* 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 Jason L. Wright
* 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.
*/
/*
* Driver for Aurora 210SJ serial ports.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/timeout.h>
#include <sys/tty.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <dev/sbus/sbusvar.h>
#include <dev/sbus/asioreg.h>
#include <dev/ic/comvar.h>
#define BAUD_BASE (1843200)
struct asio_port {
u_int8_t ap_inten;
bus_space_handle_t ap_bh;
struct device *ap_dev;
};
struct asio_softc {
struct device sc_dev;
bus_space_tag_t sc_bt;
bus_space_handle_t sc_csr_h;
void *sc_ih;
struct asio_port sc_ports[2];
int sc_nports;
};
struct asio_attach_args {
char *aaa_name;
int aaa_port;
bus_space_tag_t aaa_iot;
bus_space_handle_t aaa_ioh;
};
int asio_match __P((struct device *, void *, void *));
void asio_attach __P((struct device *, struct device *, void *));
int asio_print __P((void *, const char *));
int asio_intr __P((void *));
struct cfattach asio_ca = {
sizeof(struct asio_softc), asio_match, asio_attach
};
struct cfdriver asio_cd = {
NULL, "asio", DV_DULL
};
int com_asio_match __P((struct device *, void *, void *));
void com_asio_attach __P((struct device *, struct device *, void *));
struct cfattach com_asio_ca = {
sizeof(struct com_softc), com_asio_match, com_asio_attach
};
int
asio_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct sbus_attach_args *sa = aux;
if (strcmp(sa->sa_name, "sio2") == 0)
return (1);
return (0);
}
void
asio_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct asio_softc *sc = (void *)self;
struct sbus_attach_args *sa = aux;
struct asio_attach_args aaa;
int i, map;
u_int8_t csr;
sc->sc_bt = sa->sa_bustag;
if (sa->sa_nreg < 3) {
printf(": %d registers expected, got %d\n",
3, sa->sa_nreg);
return;
}
if (sbus_bus_map(sa->sa_bustag,
sa->sa_reg[0].sbr_slot,
sa->sa_reg[0].sbr_offset,
sa->sa_reg[0].sbr_size,
BUS_SPACE_MAP_LINEAR, 0, &sc->sc_csr_h)) {
printf(": couldn't map csr\n");
return;
}
for (i = 0; i < 2; i++) {
if (sbus_bus_map(sa->sa_bustag,
sa->sa_reg[i + 1].sbr_slot,
sa->sa_reg[i + 1].sbr_offset,
sa->sa_reg[i + 1].sbr_size,
BUS_SPACE_MAP_LINEAR, 0, &sc->sc_ports[i].ap_bh)) {
printf(": couldn't map uart%d\n", i);
return;
}
}
/* XXX: revision specific*/
sc->sc_ports[0].ap_inten = ASIO_CSR_SJ_UART0_INTEN;
sc->sc_ports[1].ap_inten = ASIO_CSR_UART1_INTEN;
printf("\n");
sc->sc_nports = 2;
for (i = 0; i < sc->sc_nports; i++) {
aaa.aaa_name = "com";
aaa.aaa_port = i;
aaa.aaa_iot = sc->sc_bt;
aaa.aaa_ioh = sc->sc_ports[i].ap_bh;
sc->sc_ports[i].ap_dev = config_found(self, &aaa, asio_print);
}
/* XXX won't work if pio comes along later and zots this.. */
csr = ASIO_CSR_SBUS_INT5;
for (map = 0, i = 0; i < sc->sc_nports; i++) {
if (sc->sc_ports[i].ap_dev != NULL) {
map = 1;
csr |= sc->sc_ports[i].ap_inten;
}
}
csr |= 2;
bus_space_write_1(sc->sc_bt, sc->sc_csr_h, ASIO_CSR, csr);
if (map == 0)
return;
sc->sc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri,
IPL_TTY, 0, asio_intr, sc);
if (sc->sc_ih == NULL) {
printf("%s: failed to map interrupt\n",
sc->sc_dev.dv_xname);
return;
}
}
int
asio_print(aux, name)
void *aux;
const char *name;
{
struct asio_attach_args *aaa;
if (name != NULL)
printf("%s at %s", aaa->aaa_name, name);
printf(" port %d", aaa->aaa_port);
return (UNCONF);
}
int
asio_intr(vsc)
void *vsc;
{
struct asio_softc *sc = vsc;
int i, r = 0;
for (i = 0; i < sc->sc_nports; i++)
r += comintr(sc->sc_ports[i].ap_dev);
return (r);
}
int
com_asio_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
return (1);
}
void
com_asio_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct com_softc *sc = (struct com_softc *)self;
struct asio_attach_args *aaa = aux;
sc->sc_iot = aaa->aaa_iot;
sc->sc_ioh = aaa->aaa_ioh;
sc->sc_iobase = sc->sc_ioh;
sc->sc_hwflags = 0;
sc->sc_swflags = 0;
sc->sc_frequency = BAUD_BASE;
com_attach_subr(sc);
}
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