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/* $OpenBSD: asio.c,v 1.12 2022/03/13 13:34:54 mpi 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.
*
* 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.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
/*
* Driver for Aurora 210SJ serial ports.
*/
#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>
#include "asio.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;
u_int32_t aaa_pri;
u_int8_t aaa_inten;
};
int asio_match(struct device *, void *, void *);
void asio_attach(struct device *, struct device *, void *);
int asio_print(void *, const char *);
void asio_intr_enable(struct device *, u_int8_t);
const struct cfattach asio_ca = {
sizeof(struct asio_softc), asio_match, asio_attach
};
struct cfdriver asio_cd = {
NULL, "asio", DV_DULL
};
int
asio_match(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(struct device *parent, struct device *self, void *aux)
{
struct asio_softc *sc = (void *)self;
struct sbus_attach_args *sa = aux;
struct asio_attach_args aaa;
int i;
char *model;
sc->sc_bt = sa->sa_bustag;
sc->sc_nports = 2;
model = getpropstring(sa->sa_node, "model");
if (model == NULL) {
printf(": empty model, unsupported\n");
return;
}
if (strcmp(model, "210sj") != 0) {
printf(": unsupported model %s\n", model);
return;
}
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,
0, 0, &sc->sc_csr_h)) {
printf(": couldn't map csr\n");
return;
}
for (i = 0; i < sc->sc_nports; 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,
0, 0, &sc->sc_ports[i].ap_bh)) {
printf(": couldn't map uart%d\n", i);
return;
}
}
sc->sc_ports[0].ap_inten = ASIO_CSR_SJ_UART0_INTEN;
sc->sc_ports[1].ap_inten = ASIO_CSR_UART1_INTEN;
printf(": %s\n", model);
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;
aaa.aaa_inten = sc->sc_ports[i].ap_inten;
aaa.aaa_pri = sa->sa_intr[0].sbi_pri;
sc->sc_ports[i].ap_dev = config_found(self, &aaa, asio_print);
}
}
int
asio_print(void *aux, const char *name)
{
struct asio_attach_args *aaa = aux;
if (name != NULL)
printf("%s at %s", aaa->aaa_name, name);
printf(" port %d", aaa->aaa_port);
return (UNCONF);
}
#if NCOM_ASIO > 0
int com_asio_match(struct device *, void *, void *);
void com_asio_attach(struct device *, struct device *, void *);
const struct cfattach com_asio_ca = {
sizeof(struct com_softc), com_asio_match, com_asio_attach
};
void
asio_intr_enable(struct device *dv, u_int8_t en)
{
struct asio_softc *sc = (struct asio_softc *)dv;
u_int8_t csr;
csr = bus_space_read_1(sc->sc_bt, sc->sc_csr_h, 0);
csr &= ~(ASIO_CSR_SBUS_INT7 | ASIO_CSR_SBUS_INT6);
csr |= ASIO_CSR_SBUS_INT5 | en;
bus_space_write_1(sc->sc_bt, sc->sc_csr_h, 0, csr);
}
int
com_asio_match(struct device *parent, void *match, void *aux)
{
return (1);
}
void
com_asio_attach(struct device *parent, struct device *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 = 0; /* XXX WTF is iobase for? It used to be the lower 32 bits of ioh's vaddr... */
sc->sc_hwflags = 0;
sc->sc_swflags = 0;
sc->sc_frequency = BAUD_BASE;
sc->sc_ih = bus_intr_establish(aaa->aaa_iot, aaa->aaa_pri,
IPL_TTY, 0, comintr, sc, self->dv_xname);
if (sc->sc_ih == NULL) {
printf(": cannot allocate intr\n");
return;
}
asio_intr_enable(parent, aaa->aaa_inten);
com_attach_subr(sc);
}
#endif
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