1 /* $NetBSD: com_ebus.c,v 1.13 2006/07/13 22:56:02 gdamore 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: com_ebus.c,v 1.13 2006/07/13 22:56:02 gdamore Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/termios.h> 46 47 #include <machine/bus.h> 48 #include <machine/autoconf.h> 49 #include <machine/intr.h> 50 51 #include <dev/ebus/ebusreg.h> 52 #include <dev/ebus/ebusvar.h> 53 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 CFATTACH_DECL(com_ebus, sizeof(struct com_ebus_softc), 67 com_ebus_match, com_ebus_attach, NULL, NULL); 68 69 static int 70 com_ebus_match(struct device *parent, struct cfdata *cf, void *aux) 71 { 72 struct ebus_attach_args *ea = aux; 73 bus_space_handle_t ioh; 74 int match; 75 76 if (strcmp(ea->ea_name, "su") != 0) 77 return (0); 78 79 match = 0; 80 if (bus_space_map(ea->ea_bustag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 81 ea->ea_reg[0].size, 0, &ioh) == 0) 82 { 83 match = comprobe1(ea->ea_bustag, ioh); 84 bus_space_unmap(ea->ea_bustag, ioh, ea->ea_reg[0].size); 85 } 86 87 return (match); 88 } 89 90 static void 91 com_ebus_attach(struct device *parent, struct device *self, void *aux) 92 { 93 struct com_ebus_softc *ebsc = (void *)self; 94 struct com_softc *sc = &ebsc->ebsc_com; 95 struct ebus_attach_args *ea = aux; 96 bus_space_tag_t iot; 97 bus_space_handle_t ioh; 98 bus_addr_t iobase; 99 100 iot = ea->ea_bustag; 101 iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 102 sc->sc_frequency = COM_FREQ; 103 sc->sc_hwflags = COM_HW_NO_TXPRELOAD; 104 105 /* 106 * XXX: It would be nice to be able to split console input and 107 * output to different devices. For now switch to serial 108 * console if PROM stdin is on serial (so that we can use DDB). 109 */ 110 if (prom_instance_to_package(prom_stdin()) == ea->ea_node) 111 comcnattach(iot, iobase, B9600, sc->sc_frequency, 112 COM_TYPE_NORMAL, (CLOCAL | CREAD | CS8)); 113 114 if (!com_is_console(iot, iobase, &ioh) 115 && bus_space_map(iot, iobase, ea->ea_reg[0].size, 116 0, &ioh) != 0) 117 { 118 printf(": unable to map device registers\n"); 119 return; 120 } 121 122 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 123 124 com_attach_subr(sc); 125 126 if (ea->ea_nintr != 0) 127 (void)bus_intr_establish(iot, ea->ea_intr[0], IPL_SERIAL, 128 comintr, sc); 129 } 130