/* $NetBSD: com_obio.c,v 1.17 2003/10/28 15:25:27 chs Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /*- * Copyright (c) 1991 The Regents of the University of California. * 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. Neither the name of the University 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. * * @(#)com.c 7.5 (Berkeley) 5/16/91 */ #include __KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.17 2003/10/28 15:25:27 chs Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct com_obio_softc { struct com_softc osc_com; /* real "com" softc */ int osc_tadpole; /* is this on a tadpole */ /* OBIO-specific goo. */ struct evcnt osc_intrcnt; /* interrupt counting */ }; static int com_obio_match __P((struct device *, struct cfdata *, void *)); static void com_obio_attach __P((struct device *, struct device *, void *)); static void com_obio_cleanup __P((void *)); CFATTACH_DECL(com_obio, sizeof(struct com_obio_softc), com_obio_match, com_obio_attach, NULL, NULL); static int com_obio_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { union obio_attach_args *uoba = aux; struct sbus_attach_args *sa = &uoba->uoba_sbus; int tadpole = 0; int need_probe = 0; int rv = 0; uint8_t auxregval = 0; if (uoba->uoba_isobio4 != 0) { return (0); } /* * Tadpole 3GX/3GS uses "modem" for a 16450 port * (We need to enable it before probing) */ if (strcmp("modem", sa->sa_name) == 0) { auxregval = *AUXIO4M_REG; *AUXIO4M_REG = auxregval | (AUXIO4M_LED|AUXIO4M_LTE); DELAY(100); tadpole = 1; need_probe = 1; } /* * Sun JavaStation 1 uses "su" for a 16550 port */ if (strcmp("su", sa->sa_name) == 0) { need_probe = 1; } if (need_probe) { bus_space_handle_t ioh; if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, sa->sa_size, BUS_SPACE_MAP_LINEAR, &ioh) == 0) { rv = comprobe1(sa->sa_bustag, ioh); #if 0 printf("modem: probe: lcr=0x%02x iir=0x%02x\n", bus_space_read_1(sa->sa_bustag, ioh, 3), bus_space_read_1(sa->sa_bustag, ioh, 2)); #endif bus_space_unmap(sa->sa_bustag, ioh, sa->sa_size); } } /* Disable the com port if tadpole */ if (tadpole) *AUXIO4M_REG = auxregval; return (rv); } static void com_obio_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct com_obio_softc *osc = (void *)self; struct com_softc *sc = &osc->osc_com; union obio_attach_args *uoba = aux; struct sbus_attach_args *sa = &uoba->uoba_sbus; if (strcmp("modem", sa->sa_name) == 0) { osc->osc_tadpole = 1; } /* * We're living on an obio that looks like an sbus slot. */ sc->sc_iot = sa->sa_bustag; sc->sc_iobase = sa->sa_offset; sc->sc_frequency = COM_FREQ; /* * XXX: It would be nice to be able to split console input and * output to different devices. For now switch to serial * console if PROM stdin is on serial (so that we can use DDB). */ if (prom_instance_to_package(prom_stdin()) == sa->sa_node) comcnattach(sc->sc_iot, sc->sc_iobase, B9600, sc->sc_frequency, COM_TYPE_NORMAL, (CLOCAL | CREAD | CS8)); if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) && sbus_bus_map(sc->sc_iot, sa->sa_slot, sc->sc_iobase, sa->sa_size, BUS_SPACE_MAP_LINEAR, &sc->sc_ioh) != 0) { printf(": can't map registers\n"); return; } if (osc->osc_tadpole) { *AUXIO4M_REG |= (AUXIO4M_LED|AUXIO4M_LTE); do { DELAY(100); } while (!comprobe1(sc->sc_iot, sc->sc_ioh)); #if 0 printf("modem: attach: lcr=0x%02x iir=0x%02x\n", bus_space_read_1(sc->sc_iot, sc->sc_ioh, 3), bus_space_read_1(sc->sc_iot, sc->sc_ioh, 2)); #endif } com_attach_subr(sc); if (sa->sa_nintr != 0) { (void)bus_intr_establish(sc->sc_iot, sa->sa_pri, IPL_SERIAL, comintr, sc); evcnt_attach_dynamic(&osc->osc_intrcnt, EVCNT_TYPE_INTR, NULL, osc->osc_com.sc_dev.dv_xname, "intr"); } /* * Shutdown hook for buggy BIOSs that don't recognize the UART * without a disabled FIFO. */ if (shutdownhook_establish(com_obio_cleanup, sc) == NULL) { panic("com_obio_attach: could not establish shutdown hook"); } } static void com_obio_cleanup(arg) void *arg; { struct com_softc *sc = arg; if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); }