1/* $NetBSD: com_iop.c,v 1.3 2008/04/28 20:23:34 martin Exp $ */ 2 3/*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Tim Rightnour 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_iop.c,v 1.3 2008/04/28 20:23:34 martin Exp $"); 34 35#include <sys/param.h> 36#include <sys/device.h> 37#include <sys/ioctl.h> 38#include <sys/tty.h> 39#include <sys/bus.h> 40 41#include <machine/intr.h> 42 43#include <dev/ic/comreg.h> 44#include <dev/ic/comvar.h> 45 46#include <dev/mca/mcavar.h> 47#include <dev/mca/mcadevs.h> 48 49#include <rs6000/ioplanar/ioplanarvar.h> 50 51struct com_iop_softc { 52 struct com_softc sc_com; /* real com softc */ 53 void *sc_ih; 54}; 55 56int com_iop_probe(device_t, cfdata_t , void *); 57void com_iop_attach(device_t, device_t, void *); 58 59CFATTACH_DECL_NEW(com_iop, sizeof(struct com_iop_softc), 60 com_iop_probe, com_iop_attach, NULL, NULL); 61 62#define COM_RAINBOW_FREQ 8000000 63 64/* 65 * This probe is very unorthodox. Basically, we have no way to actually 66 * probe the device, so instead, we check that the specific device should 67 * exist on the ioplanar, and just return true. 68 */ 69 70int 71com_iop_probe(device_t parent, cfdata_t match, void *aux) 72{ 73 struct ioplanar_dev_attach_args *idaa = aux; 74 75 if (idaa->idaa_devid == MCA_PRODUCT_IBM_SIO_RAINBOW && 76 (idaa->idaa_device == IOP_COM0 || idaa->idaa_device == IOP_COM1)) 77 return 1; 78 79 return 0; 80} 81 82void 83com_iop_attach(device_t parent, device_t self, void *aux) 84{ 85 struct com_iop_softc *isc = device_private(self); 86 struct com_softc *sc = &isc->sc_com; 87 int iobase, irq; 88 struct ioplanar_dev_attach_args *idaa = aux; 89 bus_space_handle_t ioh; 90 91 sc->sc_dev = self; 92 93 switch (idaa->idaa_devid) { 94 case MCA_PRODUCT_IBM_SIO_RAINBOW: 95 switch (idaa->idaa_device) { 96 case IOP_COM0: 97 iobase = 0x30; 98 irq = 2; /* ??? */ 99 sc->sc_frequency = COM_RAINBOW_FREQ; 100 break; 101 case IOP_COM1: 102 iobase = 0x38; 103 irq = 2; /* ??? */ 104 sc->sc_frequency = COM_RAINBOW_FREQ; 105 break; 106 default: 107 return; 108 } 109 break; 110 default: 111 return; 112 } 113 if (!com_is_console(idaa->idaa_iot, iobase, &ioh) && 114 bus_space_map(idaa->idaa_iot, iobase, COM_NPORTS, 0, &ioh)) { 115 aprint_error(": can't map i/o space\n"); 116 return; 117 } 118 119 COM_INIT_REGS(sc->sc_regs, idaa->idaa_iot, ioh, iobase); 120 121 aprint_normal("i/o %#x-%#x irq %d", iobase, iobase + COM_NPORTS - 1, 122 irq); 123 124 com_attach_subr(sc); 125 126 isc->sc_ih = mca_intr_establish(idaa->idaa_mc, irq, IPL_SERIAL, 127 comintr, sc); 128 129 if (isc->sc_ih == NULL) { 130 aprint_error_dev(self, 131 "couldn't establish interrupt handler\n"); 132 return; 133 } 134} 135