NetBSD/sys/arch/hpcmips/vr/com_vrip.c

241 lines
6.4 KiB
C

/* $NetBSD: com_vrip.c,v 1.10 2001/09/28 10:25:16 sato Exp $ */
/*-
* Copyright (c) 1999 SASAKI Takesi. All rights reserved.
* Copyright (c) 1999 PocketBSD Project. 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 the PocketBSD project
* and its contributors.
* 4. Neither the name of the project 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 REGENTS 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 REGENTS 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.
*
*/
#include "opt_kgdb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/termios.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>
#include <machine/config_hook.h>
#include <hpcmips/vr/vr.h>
#include <hpcmips/vr/vrcpudef.h>
#include <hpcmips/vr/vripvar.h>
#include <hpcmips/vr/cmureg.h>
#include <hpcmips/vr/siureg.h>
#include <dev/ic/comvar.h>
#include <dev/ic/comreg.h>
#include "opt_vr41xx.h"
#include <hpcmips/vr/vrgiuvar.h>
#include <hpcmips/vr/com_vripvar.h>
#include "locators.h"
#define COMVRIPDEBUG
#ifdef COMVRIPDEBUG
int com_vrip_debug = 0;
#define DPRINTF(arg) if (com_vrip_debug) printf arg;
#define VPRINTF(arg) if (com_vrip_debug || bootverbose) printf arg;
#else
#define DPRINTF(arg)
#define VPRINTF(arg) if (bootverbose) printf arg;
#endif
struct com_vrip_softc {
struct com_softc sc_com;
int sc_pwctl;
};
static int com_vrip_probe(struct device *, struct cfdata *, void *);
static void com_vrip_attach(struct device *, struct device *, void *);
static int com_vrip_common_probe(bus_space_tag_t, int);
int find_comenableport_from_cfdata(int *);
void vrcmu_init(void);
void vrcmu_supply(int);
void vrcmu_mask(int);
struct cfattach com_vrip_ca = {
sizeof(struct com_vrip_softc), com_vrip_probe, com_vrip_attach
};
/* For serial console */
extern struct cfdata cfdata[];
int
find_comenableport_from_cfdata(int *port)
{
platid_mask_t mask;
struct cfdata *cf;
int id;
printf ("COM enable port: ");
for (cf = cfdata; cf->cf_driver; cf++) {
if (strcmp(cf->cf_driver->cd_name, "pwctl"))
continue;
mask = PLATID_DEREF(cf->cf_loc[HPCIOIFCF_PLATFORM]);
id = cf->cf_loc[HPCIOIFCF_ID];
if (platid_match(&platid, &mask) &&
id == CONFIG_HOOK_POWERCONTROL_COM0)
goto found;
}
*port = -1;
printf ("not found\n");
return (0);
found:
*port = cf->cf_loc[HPCIOIFCF_PORT];
printf ("#%d\n", *port);
return (1);
}
int
com_vrip_cndb_attach(bus_space_tag_t iot, int iobase, int rate, int frequency,
tcflag_t cflag, int kgdb)
{
int port;
/* Platform dependent setting */
__vrcmu_supply(CMUMASK_SIU, 1);
if (find_comenableport_from_cfdata(&port))
__vrgiu_out(port, 1);
if (!com_vrip_common_probe(iot, iobase))
return (EIO); /* I can't find appropriate error number. */
#ifdef KGDB
if (kgdb)
return (com_kgdb_attach(iot, iobase, rate, frequency, cflag));
else
#endif
return (comcnattach(iot, iobase, rate, frequency, cflag));
}
static int
com_vrip_common_probe(bus_space_tag_t iot, int iobase)
{
bus_space_handle_t ioh;
int rv;
if (bus_space_map(iot, iobase, 1, 0, &ioh)) {
printf(": can't map i/o space\n");
return 0;
}
rv = comprobe1(iot, ioh);
bus_space_unmap(iot, ioh, 1);
return (rv);
}
static int
com_vrip_probe(struct device *parent, struct cfdata *cf, void *aux)
{
struct vrip_attach_args *va = aux;
bus_space_tag_t iot = va->va_iot;
int rv;
DPRINTF(("==com_vrip_probe"));
if (va->va_addr == VRIPCF_ADDR_DEFAULT ||
va->va_intr == VRIPCF_INTR_DEFAULT) {
printf(": need addr and intr.\n");
return (0);
}
if (!va->va_cf || !va->va_cf->cf_clock)
return 0; /* not yet CMU attached. Try again later. */
va->va_cf->cf_clock(va->va_cc, CMUMASK_SIU, 1);
if (com_is_console(iot, va->va_addr, 0)) {
/*
* We have alredy probed.
*/
rv = 1;
} else {
rv = com_vrip_common_probe(iot, va->va_addr);
}
DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n"));
if (rv) {
va->va_size = COM_NPORTS;
}
return (rv);
}
static void
com_vrip_attach(struct device *parent, struct device *self, void *aux)
{
struct com_vrip_softc *vsc = (void *) self;
struct com_softc *sc = &vsc->sc_com;
struct vrip_attach_args *va = aux;
bus_space_tag_t iot = va->va_iot;
bus_space_handle_t ioh;
vsc->sc_pwctl = sc->sc_dev.dv_cfdata->cf_loc[VRIPCF_PWCTL];
DPRINTF(("==com_vrip_attach"));
if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) {
printf(": can't map bus space\n");
return;
}
sc->sc_iobase = va->va_addr;
sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->enable = NULL; /* XXX: CMU control */
sc->disable = NULL;
sc->sc_frequency = VRCOM_FREQ;
/* Power management */
va->va_cf->cf_clock(va->va_cc, CMUMASK_SIU, 1);
/*
va->va_gf->gf_portwrite(va->va_gc, GIUPORT_COM, 1);
*/
/* XXX, locale 'ID' must be need */
config_hook_call(CONFIG_HOOK_POWERCONTROL, vsc->sc_pwctl, (void*)1);
DPRINTF(("Try to attach com.\n"));
com_attach_subr(sc);
DPRINTF(("Establish intr"));
vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, comintr, self);
DPRINTF((":return()"));
VPRINTF(("%s: pwctl %d\n", vsc->sc_com.sc_dev.dv_xname, vsc->sc_pwctl));
}