/* $NetBSD: com_gsc.c,v 1.12 2008/03/14 15:09:10 cube Exp $ */ /* $OpenBSD: com_gsc.c,v 1.8 2000/03/13 14:39:59 mickey Exp $ */ /* * Copyright (c) 1998 Michael Shalayeff * 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 Michael Shalayeff. * 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/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: com_gsc.c,v 1.12 2008/03/14 15:09:10 cube Exp $"); #include "opt_kgdb.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/tty.h> #ifdef KGDB #include <sys/kgdb.h> #endif #include <machine/bus.h> #include <machine/intr.h> #include <machine/iomod.h> #include <machine/autoconf.h> #include <dev/ic/comreg.h> #include <dev/ic/comvar.h> #include <hp700/dev/cpudevs.h> #include <hp700/gsc/gscbusvar.h> #include <hp700/hp700/machdep.h> #define COMGSC_OFFSET 0x800 #define COMGSC_FREQUENCY (1843200 * 4) /* 16-bit baud rate divisor */ struct com_gsc_regs { u_int8_t reset; }; struct com_gsc_softc { struct com_softc sc_com; /* real "com" softc */ /* GSC-specific goo. */ void *sc_ih; /* interrupt handler */ }; int com_gsc_probe(device_t, cfdata_t , void *); void com_gsc_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(com_gsc, sizeof(struct com_gsc_softc), com_gsc_probe, com_gsc_attach, NULL, NULL); int com_gsc_probe(device_t parent, cfdata_t match, void *aux) { struct gsc_attach_args *ga = aux; if (ga->ga_type.iodc_type != HPPA_TYPE_FIO || (ga->ga_type.iodc_sv_model != HPPA_FIO_GRS232 && ga->ga_type.iodc_sv_model != HPPA_FIO_RS232)) return 0; return 1; } void com_gsc_attach(device_t parent, device_t self, void *aux) { struct com_gsc_softc *gsc = device_private(self); struct com_softc *sc = &gsc->sc_com; struct gsc_attach_args *ga = aux; int pagezero_cookie; bus_space_tag_t iot; bus_space_handle_t ioh; bus_addr_t iobase; sc->sc_dev = self; sc->sc_hwflags = 0; sc->sc_swflags = 0; iot = ga->ga_iot; iobase = (bus_addr_t)ga->ga_hpa + COMGSC_OFFSET; sc->sc_frequency = COMGSC_FREQUENCY; /* Test if this is the console. Compare either HPA or device path. */ pagezero_cookie = hp700_pagezero_map(); if ((hppa_hpa_t)PAGE0->mem_cons.pz_hpa == ga->ga_hpa ) { /* * This port is the console. In this case we must call * comcnattach() and later com_is_console() to initialize * everything properly. */ if (comcnattach(iot, iobase, B9600, sc->sc_frequency, COM_TYPE_NORMAL, (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) { aprint_error(": can't comcnattach\n"); hp700_pagezero_unmap(pagezero_cookie); return; } } hp700_pagezero_unmap(pagezero_cookie); /* * Get the already initialized console ioh via com_is_console() if * this is the console or map the I/O space if this isn't the console. */ if (!com_is_console(iot, iobase, &ioh) && bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh) != 0) { aprint_error(": can't map I/O space\n"); return; } COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); com_attach_subr(sc); gsc->sc_ih = hp700_intr_establish(sc->sc_dev, IPL_TTY, comintr, sc, ga->ga_int_reg, ga->ga_irq); } #ifdef KGDB int com_gsc_kgdb_attach(void); int com_gsc_kgdb_attach(void) { int error; printf("kgdb: attaching com at 0x%x at %d baud...", KGDBADDR, KGDBRATE); error = com_kgdb_attach(&hppa_bustag, KGDBADDR + COMGSC_OFFSET, KGDBRATE, COMGSC_FREQUENCY, COM_TYPE_NORMAL, ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)); if (error) { printf(" failed (%d)\n", error); } else { printf(" ok\n"); } return (error); } #endif /* KGDB */