1 /* $NetBSD: com_dio.c,v 1.10 2024/01/16 05:48:28 thorpej 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 /*- 33 * Copyright (c) 1991 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)com.c 7.5 (Berkeley) 5/16/91 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: com_dio.c,v 1.10 2024/01/16 05:48:28 thorpej Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/device.h> 69 #include <sys/termios.h> 70 #include <sys/ttydefaults.h> 71 72 #include <machine/bus.h> 73 74 #include <dev/ic/comreg.h> 75 #include <dev/ic/comvar.h> 76 77 #include <hp300/dev/diovar.h> 78 #include <hp300/dev/diodevs.h> 79 #include <hp300/dev/com_dioreg.h> 80 #include <hp300/dev/com_diovar.h> 81 82 struct com_dio_softc { 83 struct com_softc sc_com; /* real "com" softc */ 84 85 /* DIO-specific goo. */ 86 struct bus_space_tag sc_tag; /* device specific bus space tag */ 87 void *sc_ih; /* interrupt handler */ 88 }; 89 90 static int com_dio_match(device_t, cfdata_t , void *); 91 static void com_dio_attach(device_t, device_t, void *); 92 93 CFATTACH_DECL_NEW(com_dio, sizeof(struct com_dio_softc), 94 com_dio_match, com_dio_attach, NULL, NULL); 95 96 static int com_dio_speed = TTYDEF_SPEED; 97 static struct bus_space_tag comcntag; 98 99 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 100 101 static int 102 com_dio_match(device_t parent, cfdata_t match, void *aux) 103 { 104 struct dio_attach_args *da = aux; 105 106 switch (da->da_id) { 107 case DIO_DEVICE_ID_DCA0: 108 case DIO_DEVICE_ID_DCA0REM: 109 case DIO_DEVICE_ID_DCA1: 110 case DIO_DEVICE_ID_DCA1REM: 111 return 1; 112 } 113 114 return 0; 115 } 116 117 static void 118 com_dio_attach(device_t parent, device_t self, void *aux) 119 { 120 struct com_dio_softc *dsc = device_private(self); 121 struct com_softc *sc = &dsc->sc_com; 122 bus_space_tag_t iot; 123 bus_space_handle_t iohdca, iohcom; 124 struct dio_attach_args *da = aux; 125 int isconsole; 126 127 sc->sc_dev = self; 128 isconsole = com_is_console(&comcntag, da->da_addr + DCA_COM_OFFSET, 129 &iohcom); 130 131 if (isconsole) { 132 iot = &comcntag; 133 bus_space_unmap(iot, iohcom, COM_NPORTS); 134 } else { 135 iot = &dsc->sc_tag; 136 memcpy(iot, da->da_bst, sizeof(struct bus_space_tag)); 137 dio_set_bus_space_oddbyte(iot); 138 } 139 140 if (bus_space_map(iot, da->da_addr, DCA_SIZE, 0, &iohdca) || 141 bus_space_subregion(iot, iohdca, DCA_COM_OFFSET, 142 COM_NPORTS << 1, &iohcom)) { 143 aprint_error(": can't map i/o space\n"); 144 return; 145 } 146 147 if (!isconsole) { 148 bus_space_write_1(iot, iohdca, DCA_RESET, 0xff); 149 DELAY(1000); 150 } 151 152 com_init_regs(&sc->sc_regs, iot, iohcom, 153 da->da_addr + DCA_COM_OFFSET); 154 155 sc->sc_frequency = COM_DIO_FREQ; 156 157 com_attach_subr(sc); 158 159 dsc->sc_ih = dio_intr_establish(comintr, sc, da->da_ipl, ISRPRI_TTY); 160 161 /* Enable interrupts. */ 162 bus_space_write_1(iot, iohdca, DCA_IC, IC_IE); 163 } 164 165 int 166 com_dio_cnattach(bus_space_tag_t bst, bus_addr_t addr, int scode) 167 { 168 bus_space_tag_t iot = &comcntag; 169 bus_space_handle_t iohdca; 170 uint8_t id; 171 172 memcpy(iot, bst, sizeof(struct bus_space_tag)); 173 dio_set_bus_space_oddbyte(iot); 174 175 if (bus_space_map(iot, addr, DCA_SIZE, 0, &iohdca)) 176 return 1; 177 bus_space_write_1(iot, iohdca, DCA_RESET, 0xff); 178 DELAY(100); 179 bus_space_write_1(iot, iohdca, DCA_IC, IC_IE); 180 181 id = bus_space_read_1(iot, iohdca, DCA_ID); 182 bus_space_unmap(iot, iohdca, DCA_SIZE); 183 184 switch (id) { 185 #ifdef CONSCODE 186 case DCAID0: 187 case DCAID1: 188 #endif 189 case DCAREMID0: 190 case DCAREMID1: 191 break; 192 default: 193 return 1; 194 } 195 196 comcnattach(iot, addr + DCA_COM_OFFSET, com_dio_speed, COM_DIO_FREQ, 197 COM_TYPE_NORMAL, CONMODE); 198 199 return 0; 200 } 201
Indexes created Wed Oct 01 07:09:59 GMT 2025