1 /* $NetBSD: com_ebus.c,v 1.2 2002/02/18 04:52:26 uwe Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/termios.h> 43 44 #include <machine/bus.h> 45 #include <machine/autoconf.h> 46 #include <machine/intr.h> 47 48 #include <dev/pci/pcireg.h> /* XXX: for PCI_INTERRUPT_PIN */ 49 50 #include <dev/ebus/ebusreg.h> 51 #include <dev/ebus/ebusvar.h> 52 53 #include <dev/ic/ns16550reg.h> 54 #include <dev/ic/comreg.h> 55 #include <dev/ic/comvar.h> 56 57 struct com_ebus_softc { 58 struct com_softc ebsc_com; /* real "com" softc */ 59 60 /* this space for rent */ 61 }; 62 63 static int com_ebus_match(struct device *, struct cfdata *, void *); 64 static void com_ebus_attach(struct device *, struct device *, void *); 65 66 struct cfattach com_ebus_ca = { 67 sizeof(struct com_ebus_softc), com_ebus_match, com_ebus_attach 68 }; 69 70 static int 71 com_ebus_match(parent, cf, aux) 72 struct device *parent; 73 struct cfdata *cf; 74 void *aux; 75 { 76 struct ebus_attach_args *ea = aux; 77 bus_space_handle_t ioh; 78 int match; 79 80 if (strcmp(ea->ea_name, "su") != 0) 81 return (0); 82 83 match = 0; 84 if (ebus_bus_map(ea->ea_bustag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 85 ea->ea_reg[0].size, 0, 0, &ioh) == 0) 86 { 87 match = comprobe1(ea->ea_bustag, ioh); 88 bus_space_unmap(ea->ea_bustag, ioh, ea->ea_reg[0].size); 89 } 90 91 return (match); 92 } 93 94 static void 95 com_ebus_attach(parent, self, aux) 96 struct device *parent, *self; 97 void *aux; 98 { 99 struct com_ebus_softc *ebsc = (void *)self; 100 struct com_softc *sc = &ebsc->ebsc_com; 101 struct ebus_attach_args *ea = aux; 102 103 sc->sc_iot = ea->ea_bustag; 104 sc->sc_iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 105 sc->sc_frequency = COM_FREQ; 106 107 /* 108 * XXX: It would be nice to be able to split console input and 109 * output to different devices. For now switch to serial 110 * console if PROM stdin is on serial (so that we can use DDB). 111 */ 112 if (prom_instance_to_package(prom_stdin()) == ea->ea_node) 113 comcnattach(sc->sc_iot, sc->sc_iobase, 114 B9600, sc->sc_frequency, (CLOCAL | CREAD | CS8)); 115 116 if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) 117 && ebus_bus_map(sc->sc_iot, sc->sc_iobase, ea->ea_reg[0].size, 118 0, 0, &sc->sc_ioh) != 0) 119 { 120 printf(": unable to map device registers\n"); 121 return; 122 } 123 124 com_attach_subr(sc); 125 126 if (ea->ea_nintr != 0) 127 (void)bus_intr_establish(sc->sc_iot, 128 ea->ea_intr[0], IPL_SERIAL, 0, 129 comintr, sc); 130 } 131