241 lines
6.4 KiB
C
241 lines
6.4 KiB
C
/* $NetBSD: com_vrip.c,v 1.10 2001/09/28 10:25:16 sato Exp $ */
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/*-
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* Copyright (c) 1999 SASAKI Takesi. All rights reserved.
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* Copyright (c) 1999 PocketBSD Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the PocketBSD project
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* and its contributors.
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* 4. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "opt_kgdb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/reboot.h>
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#include <sys/termios.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <machine/platid.h>
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#include <machine/platid_mask.h>
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#include <machine/config_hook.h>
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#include <hpcmips/vr/vr.h>
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#include <hpcmips/vr/vrcpudef.h>
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#include <hpcmips/vr/vripvar.h>
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#include <hpcmips/vr/cmureg.h>
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#include <hpcmips/vr/siureg.h>
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#include <dev/ic/comvar.h>
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#include <dev/ic/comreg.h>
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#include "opt_vr41xx.h"
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#include <hpcmips/vr/vrgiuvar.h>
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#include <hpcmips/vr/com_vripvar.h>
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#include "locators.h"
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#define COMVRIPDEBUG
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#ifdef COMVRIPDEBUG
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int com_vrip_debug = 0;
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#define DPRINTF(arg) if (com_vrip_debug) printf arg;
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#define VPRINTF(arg) if (com_vrip_debug || bootverbose) printf arg;
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#else
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#define DPRINTF(arg)
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#define VPRINTF(arg) if (bootverbose) printf arg;
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#endif
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struct com_vrip_softc {
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struct com_softc sc_com;
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int sc_pwctl;
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};
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static int com_vrip_probe(struct device *, struct cfdata *, void *);
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static void com_vrip_attach(struct device *, struct device *, void *);
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static int com_vrip_common_probe(bus_space_tag_t, int);
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int find_comenableport_from_cfdata(int *);
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void vrcmu_init(void);
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void vrcmu_supply(int);
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void vrcmu_mask(int);
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struct cfattach com_vrip_ca = {
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sizeof(struct com_vrip_softc), com_vrip_probe, com_vrip_attach
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};
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/* For serial console */
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extern struct cfdata cfdata[];
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int
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find_comenableport_from_cfdata(int *port)
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{
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platid_mask_t mask;
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struct cfdata *cf;
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int id;
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printf ("COM enable port: ");
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for (cf = cfdata; cf->cf_driver; cf++) {
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if (strcmp(cf->cf_driver->cd_name, "pwctl"))
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continue;
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mask = PLATID_DEREF(cf->cf_loc[HPCIOIFCF_PLATFORM]);
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id = cf->cf_loc[HPCIOIFCF_ID];
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if (platid_match(&platid, &mask) &&
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id == CONFIG_HOOK_POWERCONTROL_COM0)
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goto found;
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}
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*port = -1;
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printf ("not found\n");
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return (0);
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found:
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*port = cf->cf_loc[HPCIOIFCF_PORT];
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printf ("#%d\n", *port);
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return (1);
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}
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int
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com_vrip_cndb_attach(bus_space_tag_t iot, int iobase, int rate, int frequency,
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tcflag_t cflag, int kgdb)
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{
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int port;
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/* Platform dependent setting */
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__vrcmu_supply(CMUMASK_SIU, 1);
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if (find_comenableport_from_cfdata(&port))
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__vrgiu_out(port, 1);
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if (!com_vrip_common_probe(iot, iobase))
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return (EIO); /* I can't find appropriate error number. */
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#ifdef KGDB
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if (kgdb)
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return (com_kgdb_attach(iot, iobase, rate, frequency, cflag));
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else
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#endif
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return (comcnattach(iot, iobase, rate, frequency, cflag));
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}
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static int
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com_vrip_common_probe(bus_space_tag_t iot, int iobase)
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{
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bus_space_handle_t ioh;
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int rv;
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if (bus_space_map(iot, iobase, 1, 0, &ioh)) {
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printf(": can't map i/o space\n");
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return 0;
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}
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rv = comprobe1(iot, ioh);
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bus_space_unmap(iot, ioh, 1);
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return (rv);
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}
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static int
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com_vrip_probe(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct vrip_attach_args *va = aux;
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bus_space_tag_t iot = va->va_iot;
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int rv;
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DPRINTF(("==com_vrip_probe"));
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if (va->va_addr == VRIPCF_ADDR_DEFAULT ||
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va->va_intr == VRIPCF_INTR_DEFAULT) {
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printf(": need addr and intr.\n");
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return (0);
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}
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if (!va->va_cf || !va->va_cf->cf_clock)
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return 0; /* not yet CMU attached. Try again later. */
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va->va_cf->cf_clock(va->va_cc, CMUMASK_SIU, 1);
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if (com_is_console(iot, va->va_addr, 0)) {
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/*
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* We have alredy probed.
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*/
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rv = 1;
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} else {
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rv = com_vrip_common_probe(iot, va->va_addr);
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}
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DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n"));
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if (rv) {
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va->va_size = COM_NPORTS;
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}
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return (rv);
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}
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static void
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com_vrip_attach(struct device *parent, struct device *self, void *aux)
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{
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struct com_vrip_softc *vsc = (void *) self;
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struct com_softc *sc = &vsc->sc_com;
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struct vrip_attach_args *va = aux;
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bus_space_tag_t iot = va->va_iot;
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bus_space_handle_t ioh;
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vsc->sc_pwctl = sc->sc_dev.dv_cfdata->cf_loc[VRIPCF_PWCTL];
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DPRINTF(("==com_vrip_attach"));
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if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) {
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printf(": can't map bus space\n");
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return;
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}
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sc->sc_iobase = va->va_addr;
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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sc->enable = NULL; /* XXX: CMU control */
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sc->disable = NULL;
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sc->sc_frequency = VRCOM_FREQ;
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/* Power management */
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va->va_cf->cf_clock(va->va_cc, CMUMASK_SIU, 1);
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/*
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va->va_gf->gf_portwrite(va->va_gc, GIUPORT_COM, 1);
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*/
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/* XXX, locale 'ID' must be need */
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config_hook_call(CONFIG_HOOK_POWERCONTROL, vsc->sc_pwctl, (void*)1);
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DPRINTF(("Try to attach com.\n"));
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com_attach_subr(sc);
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DPRINTF(("Establish intr"));
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vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, comintr, self);
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DPRINTF((":return()"));
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VPRINTF(("%s: pwctl %d\n", vsc->sc_com.sc_dev.dv_xname, vsc->sc_pwctl));
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}
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