/* $NetBSD: com_pioc.c,v 1.17 2018/12/08 17:46:09 thorpej 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. * * 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 <sys/param.h> __KERNEL_RCSID(0, "$NetBSD: com_pioc.c,v 1.17 2018/12/08 17:46:09 thorpej Exp $"); #include <sys/systm.h> #include <sys/tty.h> #include <sys/proc.h> #include <sys/conf.h> #include <sys/kernel.h> #include <sys/device.h> #include <sys/bus.h> #include <machine/intr.h> #include <machine/io.h> #include <acorn32/mainbus/piocvar.h> #include <dev/ic/comreg.h> #include <dev/ic/comvar.h> #include <dev/cons.h> #include "locators.h" struct com_pioc_softc { struct com_softc sc_com; /* real "com" softc */ void *sc_ih; /* interrupt handler */ }; /* Prototypes for functions */ cons_decl(com); static int com_pioc_probe (device_t, cfdata_t , void *); static void com_pioc_attach (device_t, device_t, void *); /* device attach structure */ CFATTACH_DECL_NEW(com_pioc, sizeof(struct com_pioc_softc), com_pioc_probe, com_pioc_attach, NULL, NULL); extern bus_space_tag_t comconstag; /* From pioc.c */ /* * int com_pioc_probe(device_t parent, cfdata_t cf, void *aux) * * Make sure we are trying to attach a com device and then * probe for one. */ static int com_pioc_probe(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux) * * attach the com device */ static void com_pioc_attach(device_t parent, device_t self, void *aux) { struct com_pioc_softc *psc = device_private(self); struct com_softc *sc = &psc->sc_com; u_int iobase; bus_space_tag_t iot; bus_space_handle_t ioh; struct pioc_attach_args *pa = aux; int count; sc->sc_dev = self; iot = pa->pa_iot; iobase = pa->pa_iobase + pa->pa_offset; /* printf(" (iot = %p, iobase = 0x%08x) ", iot, iobase); */ if (!com_is_console(iot, iobase, &ioh) && bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) panic("comattach: io mapping failed"); com_init_regs(&sc->sc_regs, iot, ioh, iobase); 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); } if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) { aprint_error_dev(self, "could not establish shutdown hook"); } /* * 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, ioh, com_fifo, 0); for (count = 0; count < 8; ++count) (void)bus_space_read_1(iot, ioh, count); } /* * Console attachment functions */ void comcnprobe(struct consdev *cp) { #ifdef COMCONSOLE cp->cn_pri = CN_REMOTE; /* Force a serial port console */ #else cp->cn_pri = CN_NORMAL; #endif } void comcninit(struct consdev *cp) { int result; #ifndef CONMODE #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ #endif #ifndef CONSPEED #define CONSPEED 38400 #endif #ifndef CONADDR #define CONADDR 0x3f8 #endif result = comcnattach(comconstag, (IO_CONF_BASE + CONADDR), CONSPEED, COM_FREQ, COM_TYPE_NORMAL, CONMODE); if (result) { printf("initialising serial; got errornr %d\n", result); panic("can't init serial console @%x", CONADDR); }; } /* End of com_pioc.c */
