1/* $NetBSD: com_ebus.c,v 1.15 2008/04/28 20:23:35 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: com_ebus.c,v 1.15 2008/04/28 20:23:35 martin Exp $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/device.h> 38#include <sys/termios.h> 39 40#include <sys/bus.h> 41#include <machine/autoconf.h> 42#include <machine/intr.h> 43 44#include <dev/ebus/ebusreg.h> 45#include <dev/ebus/ebusvar.h> 46 47#include <dev/ic/comreg.h> 48#include <dev/ic/comvar.h> 49 50struct com_ebus_softc { 51 struct com_softc ebsc_com; /* real "com" softc */ 52 53 /* this space for rent */ 54}; 55 56static int com_ebus_match(device_t, cfdata_t , void *); 57static void com_ebus_attach(device_t, device_t, void *); 58 59CFATTACH_DECL_NEW(com_ebus, sizeof(struct com_ebus_softc), 60 com_ebus_match, com_ebus_attach, NULL, NULL); 61 62static int 63com_ebus_match(device_t parent, cfdata_t cf, void *aux) 64{ 65 struct ebus_attach_args *ea = aux; 66 bus_space_handle_t ioh; 67 int match; 68 69 if (strcmp(ea->ea_name, "su") != 0) 70 return (0); 71 72 match = 0; 73 if (bus_space_map(ea->ea_bustag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 74 ea->ea_reg[0].size, 0, &ioh) == 0) 75 { 76 match = comprobe1(ea->ea_bustag, ioh); 77 bus_space_unmap(ea->ea_bustag, ioh, ea->ea_reg[0].size); 78 } 79 80 return (match); 81} 82 83static void 84com_ebus_attach(device_t parent, device_t self, void *aux) 85{ 86 struct com_ebus_softc *ebsc = device_private(self); 87 struct com_softc *sc = &ebsc->ebsc_com; 88 struct ebus_attach_args *ea = aux; 89 bus_space_tag_t iot; 90 bus_space_handle_t ioh; 91 bus_addr_t iobase; 92 93 sc->sc_dev = self; 94 iot = ea->ea_bustag; 95 iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 96 sc->sc_frequency = COM_FREQ; 97 sc->sc_hwflags = COM_HW_NO_TXPRELOAD; 98 99 /* 100 * XXX: It would be nice to be able to split console input and 101 * output to different devices. For now switch to serial 102 * console if PROM stdin is on serial (so that we can use DDB). 103 */ 104 if (prom_instance_to_package(prom_stdin()) == ea->ea_node) 105 comcnattach(iot, iobase, B9600, sc->sc_frequency, 106 COM_TYPE_NORMAL, (CLOCAL | CREAD | CS8)); 107 108 if (!com_is_console(iot, iobase, &ioh) 109 && bus_space_map(iot, iobase, ea->ea_reg[0].size, 110 0, &ioh) != 0) 111 { 112 aprint_error(": unable to map device registers\n"); 113 return; 114 } 115 116 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 117 118 com_attach_subr(sc); 119 120 if (ea->ea_nintr != 0) 121 (void)bus_intr_establish(iot, ea->ea_intr[0], IPL_SERIAL, 122 comintr, sc); 123} 124