/* $NetBSD: com_pioc.c,v 1.7 1998/09/16 21:30:59 is 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" struct com_pioc_softc { struct com_softc sc_com; /* real "com" softc */ void *sc_ih; /* interrupt handler */ }; /* Prototypes for functions */ static int com_pioc_probe __P((struct device *, struct cfdata *, void *)); static void com_pioc_attach __P((struct device *, struct device *, void *)); static void com_pioc_cleanup __P((void *)); /* device attach structure */ struct cfattach com_pioc_ca = { sizeof(struct com_pioc_softc), com_pioc_probe, com_pioc_attach }; extern bus_space_tag_t comconstag; /* From pioc.c */ /* * int com_pioc_probe(struct device *parent, struct cfdata *cf, void *aux) * * Make sure we are trying to attach a com device and then * probe for one. */ static int com_pioc_probe(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { bus_space_tag_t iot; bus_space_handle_t ioh; int iobase; int rv = 1; struct pioc_attach_args *pa = aux; /* We need an offset */ if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) return(0); iot = pa->pa_iot; iobase = pa->pa_iobase + pa->pa_offset; /* if it's in use as console, it's there. */ if (!com_is_console(iot, iobase, 0)) { if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { return 0; } rv = comprobe1(iot, ioh); bus_space_unmap(iot, ioh, COM_NPORTS); } if (rv) { pa->pa_iosize = COM_NPORTS; } return (rv); } /* * void com_pioc_attach(struct device *parent, struct device *self, void *aux) * * attach the com device */ static void com_pioc_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct com_pioc_softc *psc = (void *)self; struct com_softc *sc = &psc->sc_com; u_int iobase; bus_space_tag_t iot; struct pioc_attach_args *pa = aux; int count; iot = sc->sc_iot = pa->pa_iot; iobase = sc->sc_iobase = pa->pa_iobase + pa->pa_offset; if (!com_is_console(iot, iobase, &sc->sc_ioh) && bus_space_map(iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) panic("comattach: io mapping failed"); sc->sc_frequency = COM_FREQ; com_attach_subr(sc); if (pa->pa_irq != MAINBUSCF_IRQ_DEFAULT) { psc->sc_ih = intr_claim(pa->pa_irq, IPL_SERIAL, "com", comintr, sc); } /* * Shutdown hook for buggy BIOSs that don't recognize the UART * without a disabled FIFO. */ if (shutdownhook_establish(com_pioc_cleanup, sc) == NULL) panic("%s: could not establish shutdown hook", sc->sc_dev.dv_xname); /* * This is a patch for bugged revision 1-4 SMC FDC37C665 * I/O controllers. * If there is RX data pending when the FIFO in turned on * the RX register cannot be emptied. * * Solution: * Make sure FIFO is off. * Read pending data / int status etc. */ bus_space_write_1(iot, sc->sc_ioh, com_fifo, 0); for (count = 0; count < 8; ++count) (void)bus_space_read_1(iot, sc->sc_ioh, count); } /* * void com_pioc_cleanup(void *arg) * * clean up driver */ static void com_pioc_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); } /* * Console attachment functions */ void comcnprobe(cp) struct consdev *cp; { #ifdef COMCONSOLE cp->cn_pri = CN_REMOTE; /* Force a serial port console */ #else cp->cn_pri = CN_NORMAL; #endif } void comcninit(cp) struct consdev *cp; { #ifndef CONMODE #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ #endif #ifndef CONSPEED #define CONSPEED 38400 #endif #ifndef CONADDR #define CONADDR 0x3f8 #endif if (comcnattach(comconstag, CONADDR << 2, CONSPEED, COM_FREQ, CONMODE)) panic("can't init serial console @%x", CONADDR << 2); } /* End of com_pioc.c */