1 /* $NetBSD: com_opb.c,v 1.25 2021/02/27 20:43:58 rin Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1998 40 * Matthias Drochner. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: com_opb.c,v 1.25 2021/02/27 20:43:58 rin Exp $"); 65 66 #include "com.h" 67 68 #include <sys/param.h> 69 #include <sys/device.h> 70 #include <sys/tty.h> 71 #include <sys/systm.h> 72 #include <sys/cpu.h> 73 74 #include <lib/libkern/libkern.h> 75 76 #include <powerpc/ibm4xx/cpu.h> 77 78 #include <powerpc/ibm4xx/dev/opbvar.h> 79 #include <powerpc/ibm4xx/dev/comopbvar.h> 80 81 #if (NCOM > 0) 82 #include <dev/ic/comreg.h> 83 #include <dev/ic/comvar.h> 84 #endif 85 86 struct com_opb_softc { 87 struct com_softc sc_com; 88 void *sc_ih; 89 }; 90 91 static int com_opb_probe(device_t, cfdata_t , void *); 92 static void com_opb_attach(device_t, device_t, void *); 93 94 CFATTACH_DECL_NEW(com_opb, sizeof(struct com_opb_softc), 95 com_opb_probe, com_opb_attach, NULL, NULL); 96 97 int 98 com_opb_probe(device_t parent, cfdata_t cf, void *aux) 99 { 100 struct opb_attach_args *oaa = aux; 101 102 /* match only com devices */ 103 if (strcmp(oaa->opb_name, cf->cf_name) != 0) 104 return 0; 105 106 return (1); 107 } 108 109 void 110 com_opb_attach(device_t parent, device_t self, void *aux) 111 { 112 struct com_opb_softc *msc = device_private(self); 113 struct com_softc *sc = &msc->sc_com; 114 struct opb_attach_args *oaa = aux; 115 prop_number_t freq; 116 bus_space_handle_t ioh; 117 118 sc->sc_dev = self; 119 120 /* XXX console check */ 121 122 bus_space_map(oaa->opb_bt, oaa->opb_addr, COM_NPORTS, 0, &ioh); 123 com_init_regs(&sc->sc_regs, oaa->opb_bt, ioh, oaa->opb_addr); 124 125 freq = prop_dictionary_get(device_properties(sc->sc_dev), 126 "clock-frequency"); 127 if (freq == NULL) { 128 aprint_error(": unable to get clock-frequency property\n"); 129 return; 130 } 131 KASSERT(prop_object_type(freq) == PROP_TYPE_NUMBER); 132 sc->sc_frequency = (int) prop_number_integer_value(freq); 133 134 com_attach_subr(sc); 135 136 intr_establish_xname(oaa->opb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc, 137 device_xname(self)); 138 } 139 140 /* 141 * com_opb_cnattach: 142 * Initialize the system console. 143 */ 144 void 145 com_opb_cnattach(int com_freq, int conaddr, int conspeed, int conmode) 146 { 147 static int attached = 0; 148 149 if (attached) 150 return; 151 attached = 1; 152 153 #if (NCOM > 0) 154 /* We *know* the com-console attaches to opb */ 155 if (comcnattach(opb_get_bus_space_tag(), conaddr, conspeed, com_freq, 156 COM_TYPE_NORMAL, conmode)) 157 panic("can't init serial console @%x", conaddr); 158 else 159 return; 160 #endif 161 panic("console device missing -- serial console not in kernel"); 162 /* Of course, this is moot if there is no console... */ 163 } 164 165 /* 166 * com_opb_device_register: 167 */ 168 void 169 com_opb_device_register(device_t dev, int frequency) 170 { 171 /* Set the frequency of the on-chip UART. */ 172 prop_number_t pn = prop_number_create_integer(frequency); 173 KASSERT(pn != NULL); 174 175 if (prop_dictionary_set(device_properties(dev), 176 "clock-frequency", pn) == false) { 177 printf("WARNING: unable to set clock-frequency " 178 "property for %s\n", device_xname(dev)); 179 } 180 prop_object_release(pn); 181 } 182
Indexes created Tue Sep 30 20:09:53 GMT 2025