1/* $NetBSD: com_mainbus.c,v 1.1 2021/01/27 05:24:16 simonb Exp $ */ 2 3/*- 4 * Copyright (c) 2001, 2021 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe and Simon Burge. 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> /* RCS ID & Copyright macro defns */ 33 34__KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.1 2021/01/27 05:24:16 simonb Exp $"); 35 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/conf.h> 39#include <sys/device.h> 40#include <sys/file.h> 41#include <sys/tty.h> 42 43#include <evbmips/mipssim/autoconf.h> 44 45#include <dev/ic/comreg.h> 46#include <dev/ic/comvar.h> 47 48struct com_mainbus_softc { 49 struct com_softc sc_com; /* real "com" softc */ 50 51 /* mainbus-specific goo. */ 52 void *sc_ih; /* interrupt handler */ 53}; 54 55static int com_mainbus_match(device_t, cfdata_t , void *); 56static void com_mainbus_attach(device_t, device_t, void *); 57 58CFATTACH_DECL_NEW(com_mainbus, sizeof(struct com_mainbus_softc), 59 com_mainbus_match, com_mainbus_attach, NULL, NULL); 60 61int 62com_mainbus_match(device_t parent, cfdata_t match, void *aux) 63{ 64 struct mainbus_attach_args *ma = aux; 65 66 /* Always present. */ 67 if (strcmp(ma->ma_name, match->cf_name) == 0) 68 return (1); 69 70 return (0); 71} 72 73void 74com_mainbus_attach(device_t parent, device_t self, void *aux) 75{ 76 struct com_mainbus_softc *msc = device_private(self); 77 struct com_softc *sc = &msc->sc_com; 78 struct mainbus_attach_args *ma = aux; 79 bus_space_handle_t ioh; 80 81 sc->sc_dev = self; 82 if (com_is_console(ma->ma_iot, ma->ma_addr, &ioh) == 0 && 83 bus_space_map(ma->ma_iot, ma->ma_addr, COM_NPORTS, 0, &ioh) != 0) { 84 aprint_error(": can't map i/o space\n"); 85 return; 86 } 87 com_init_regs(&sc->sc_regs, ma->ma_iot, ioh, ma->ma_addr); 88 sc->sc_frequency = COM_FREQ; 89 90 com_attach_subr(sc); 91 92 msc->sc_ih = evbmips_intr_establish(ma->ma_irq, comintr, sc); 93 if (msc->sc_ih == NULL) { 94 aprint_error_dev(self, "unable to establish interrupt\n"); 95 return; 96 } 97} 98