1 /* $NetBSD: com_opb.c,v 1.21 2011/06/18 06:41:42 matt 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 1.21 2011/06/18 06:41:42 matt Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/device.h> 68 #include <sys/tty.h> 69 #include <sys/systm.h> 70 #include <sys/cpu.h> 71 72 #include <lib/libkern/libkern.h> 73 74 #include <powerpc/ibm4xx/cpu.h> 75 76 #include <powerpc/ibm4xx/dev/opbvar.h> 77 #include <powerpc/ibm4xx/dev/comopbvar.h> 78 79 #include "com.h" 80 #if (NCOM > 0) 81 #include <dev/ic/comreg.h> 82 #include <dev/ic/comvar.h> 83 #endif 84 85 struct com_opb_softc { 86 struct com_softc sc_com; 87 void *sc_ih; 88 }; 89 90 static int com_opb_probe(device_t, cfdata_t , void *); 91 static void com_opb_attach(device_t, device_t, void *); 92 93 CFATTACH_DECL_NEW(com_opb, sizeof(struct com_opb_softc), 94 com_opb_probe, com_opb_attach, NULL, NULL); 95 96 int 97 com_opb_probe(device_t parent, cfdata_t cf, void *aux) 98 { 99 struct opb_attach_args *oaa = aux; 100 101 /* match only com devices */ 102 if (strcmp(oaa->opb_name, cf->cf_name) != 0) 103 return 0; 104 105 return (1); 106 } 107 108 void 109 com_opb_attach(device_t parent, device_t self, void *aux) 110 { 111 struct com_opb_softc *msc = device_private(self); 112 struct com_softc *sc = &msc->sc_com; 113 struct opb_attach_args *oaa = aux; 114 prop_number_t freq; 115 bus_space_handle_t ioh; 116 117 sc->sc_dev = self; 118 119 /* XXX console check */ 120 121 bus_space_map(oaa->opb_bt, oaa->opb_addr, COM_NPORTS, 0, &ioh); 122 COM_INIT_REGS(sc->sc_regs, oaa->opb_bt, ioh, oaa->opb_addr); 123 124 freq = prop_dictionary_get(device_properties(sc->sc_dev), 125 "clock-frequency"); 126 if (freq == NULL) { 127 aprint_error(": unable to get clock-frequency property\n"); 128 return; 129 } 130 KASSERT(prop_object_type(freq) == PROP_TYPE_NUMBER); 131 sc->sc_frequency = (int) prop_number_integer_value(freq); 132 133 com_attach_subr(sc); 134 135 intr_establish(oaa->opb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc); 136 } 137 138 /* 139 * com_opb_cnattach: 140 * Initialize the system console. 141 */ 142 void 143 com_opb_cnattach(int com_freq, int conaddr, int conspeed, int conmode) 144 { 145 static int attached = 0; 146 #if (NCOM > 0) 147 struct com_regs regs; 148 #endif 149 150 if (attached) 151 return; 152 attached = 1; 153 154 #if (NCOM > 0) 155 /* We *know* the com-console attaches to opb */ 156 regs.cr_iot = opb_get_bus_space_tag(); 157 regs.cr_iobase = conaddr; 158 regs.cr_nports = COM_NPORTS; 159 /* regs.ioh is initialized by comcnattach */ 160 161 if (comcnattach1(®s, conspeed, com_freq, COM_TYPE_NORMAL, conmode)) 162 panic("can't init serial console @%x", conaddr); 163 else 164 return; 165 #endif 166 panic("console device missing -- serial console not in kernel"); 167 /* Of course, this is moot if there is no console... */ 168 } 169 170 /* 171 * com_opb_device_register: 172 */ 173 void 174 com_opb_device_register(device_t dev, int frequency) 175 { 176 /* Set the frequency of the on-chip UART. */ 177 prop_number_t pn = prop_number_create_integer(frequency); 178 KASSERT(pn != NULL); 179 180 if (prop_dictionary_set(device_properties(dev), 181 "clock-frequency", pn) == false) { 182 printf("WARNING: unable to set clock-frequency " 183 "property for %s\n", device_xname(dev)); 184 } 185 prop_object_release(pn); 186 } 187