/* $OpenBSD: boca.c,v 1.16 2002/03/14 01:26:56 millert Exp $ */ /* $NetBSD: boca.c,v 1.15 1996/05/12 23:51:50 mycroft Exp $ */ /* * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. * 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/systm.h> #include <sys/device.h> #include <sys/termios.h> #include <machine/bus.h> #include <machine/intr.h> #include <dev/isa/isavar.h> #include <dev/ic/comreg.h> #include <dev/ic/comvar.h> #define NSLAVES 8 struct boca_softc { struct device sc_dev; void *sc_ih; bus_space_tag_t sc_iot; int sc_iobase; int sc_alive; /* mask of slave units attached */ void *sc_slaves[NSLAVES]; /* com device unit numbers */ bus_space_handle_t sc_slaveioh[NSLAVES]; }; int bocaprobe(struct device *, void *, void *); void bocaattach(struct device *, struct device *, void *); int bocaintr(void *); int bocaprint(void *, const char *); struct cfattach boca_ca = { sizeof(struct boca_softc), bocaprobe, bocaattach, }; struct cfdriver boca_cd = { NULL, "boca", DV_TTY }; int bocaprobe(parent, self, aux) struct device *parent; void *self; void *aux; { struct isa_attach_args *ia = aux; int iobase = ia->ia_iobase; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int i, rv = 1; /* * Do the normal com probe for the first UART and assume * its presence, and the ability to map the other UARTS, * means there is a multiport board there. * XXX Needs more robustness. */ /* if the first port is in use as console, then it. */ if (iobase == comconsaddr && !comconsattached) goto checkmappings; if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { rv = 0; goto out; } rv = comprobe1(iot, ioh); bus_space_unmap(iot, ioh, COM_NPORTS); if (rv == 0) goto out; checkmappings: for (i = 1; i < NSLAVES; i++) { iobase += COM_NPORTS; if (iobase == comconsaddr && !comconsattached) continue; if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { rv = 0; goto out; } bus_space_unmap(iot, ioh, COM_NPORTS); } out: if (rv) ia->ia_iosize = NSLAVES * COM_NPORTS; return (rv); } int bocaprint(aux, pnp) void *aux; const char *pnp; { struct commulti_attach_args *ca = aux; if (pnp) printf("com at %s", pnp); printf(" slave %d", ca->ca_slave); return (UNCONF); } void bocaattach(parent, self, aux) struct device *parent, *self; void *aux; { struct boca_softc *sc = (void *)self; struct isa_attach_args *ia = aux; struct commulti_attach_args ca; bus_space_tag_t iot = ia->ia_iot; int i; sc->sc_iot = ia->ia_iot; sc->sc_iobase = ia->ia_iobase; for (i = 0; i < NSLAVES; i++) if (bus_space_map(iot, sc->sc_iobase + i * COM_NPORTS, COM_NPORTS, 0, &sc->sc_slaveioh[i])) panic("bocaattach: couldn't map slave %d", i); printf("\n"); for (i = 0; i < NSLAVES; i++) { ca.ca_slave = i; ca.ca_iot = sc->sc_iot; ca.ca_ioh = sc->sc_slaveioh[i]; ca.ca_iobase = sc->sc_iobase + i * COM_NPORTS; ca.ca_noien = 0; sc->sc_slaves[i] = config_found(self, &ca, bocaprint); if (sc->sc_slaves[i] != NULL) sc->sc_alive |= 1 << i; } sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_TTY, bocaintr, sc, sc->sc_dev.dv_xname); } int bocaintr(arg) void *arg; { struct boca_softc *sc = arg; bus_space_tag_t iot = sc->sc_iot; int alive = sc->sc_alive; int bits; bits = bus_space_read_1(iot, sc->sc_slaveioh[0], 7) & 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 = bus_space_read_1(iot, sc->sc_slaveioh[0], 7) & alive; if (bits == 0) return (1); } }