com_dio.c revision 1.5
1 /* $NetBSD: com_dio.c,v 1.5 2006/07/13 22:56:01 gdamore 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1991 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)com.c 7.5 (Berkeley) 5/16/91 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: com_dio.c,v 1.5 2006/07/13 22:56:01 gdamore Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/device.h> 76 #include <sys/termios.h> 77 #include <sys/ttydefaults.h> 78 79 #include <machine/bus.h> 80 81 #include <dev/ic/comreg.h> 82 #include <dev/ic/comvar.h> 83 84 #include <hp300/dev/diovar.h> 85 #include <hp300/dev/diodevs.h> 86 #include <hp300/dev/com_dioreg.h> 87 #include <hp300/dev/com_diovar.h> 88 89 struct com_dio_softc { 90 struct com_softc sc_com; /* real "com" softc */ 91 92 /* DIO-specific goo. */ 93 struct bus_space_tag sc_tag; /* device specific bus space tag */ 94 void *sc_ih; /* interrupt handler */ 95 }; 96 97 static int com_dio_match(struct device *, struct cfdata *, void *); 98 static void com_dio_attach(struct device *, struct device *, void *); 99 100 CFATTACH_DECL(com_dio, sizeof(struct com_dio_softc), 101 com_dio_match, com_dio_attach, NULL, NULL); 102 103 static int com_dio_speed = TTYDEF_SPEED; 104 static struct bus_space_tag comcntag; 105 106 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 107 108 static int 109 com_dio_match(struct device *parent, struct cfdata *match, void *aux) 110 { 111 struct dio_attach_args *da = aux; 112 113 switch (da->da_id) { 114 case DIO_DEVICE_ID_DCA0: 115 case DIO_DEVICE_ID_DCA0REM: 116 case DIO_DEVICE_ID_DCA1: 117 case DIO_DEVICE_ID_DCA1REM: 118 return 1; 119 } 120 121 return 0; 122 } 123 124 static void 125 com_dio_attach(struct device *parent, struct device *self, void *aux) 126 { 127 struct com_dio_softc *dsc = (void *)self; 128 struct com_softc *sc = &dsc->sc_com; 129 bus_space_tag_t iot; 130 bus_space_handle_t iohdca, iohcom; 131 struct dio_attach_args *da = aux; 132 int isconsole; 133 134 isconsole = com_is_console(&comcntag, da->da_addr + DCA_COM_OFFSET, 135 &iohcom); 136 137 if (isconsole) { 138 iot = &comcntag; 139 bus_space_unmap(iot, iohcom, COM_NPORTS); 140 } else { 141 iot = &dsc->sc_tag; 142 memcpy(iot, da->da_bst, sizeof(struct bus_space_tag)); 143 dio_set_bus_space_oddbyte(iot); 144 } 145 146 if (bus_space_map(iot, da->da_addr, DCA_SIZE, 0, &iohdca) || 147 bus_space_subregion(iot, iohdca, DCA_COM_OFFSET, 148 COM_NPORTS << 1, &iohcom)) { 149 printf(": can't map i/o space\n"); 150 return; 151 } 152 153 if (!isconsole) { 154 bus_space_write_1(iot, iohdca, DCA_RESET, 0xff); 155 DELAY(1000); 156 } 157 158 COM_INIT_REGS(sc->sc_regs, iot, iohcom, 159 da->da_addr + DCA_COM_OFFSET); 160 161 sc->sc_frequency = COM_DIO_FREQ; 162 163 com_attach_subr(sc); 164 165 dsc->sc_ih = dio_intr_establish(comintr, sc, da->da_ipl, 166 ((sc->sc_hwflags & COM_HW_FIFO) != 0) ? IPL_TTY : IPL_TTYNOBUF); 167 168 /* Enable interrupts. */ 169 bus_space_write_1(iot, iohdca, DCA_IC, IC_IE); 170 } 171 172 int 173 com_dio_cnattach(bus_space_tag_t bst, bus_addr_t addr, int scode) 174 { 175 bus_space_tag_t iot = &comcntag; 176 bus_space_handle_t iohdca; 177 uint8_t id; 178 179 memcpy(iot, bst, sizeof(struct bus_space_tag)); 180 dio_set_bus_space_oddbyte(iot); 181 182 if (bus_space_map(iot, addr, DCA_SIZE, 0, &iohdca)) 183 return 1; 184 bus_space_write_1(iot, iohdca, DCA_RESET, 0xff); 185 DELAY(100); 186 bus_space_write_1(iot, iohdca, DCA_IC, IC_IE); 187 188 id = bus_space_read_1(iot, iohdca, DCA_ID); 189 bus_space_unmap(iot, iohdca, DCA_SIZE); 190 191 switch (id) { 192 #ifdef CONSCODE 193 case DCAID0: 194 case DCAID1: 195 #endif 196 case DCAREMID0: 197 case DCAREMID1: 198 break; 199 default: 200 return 1; 201 } 202 203 comcnattach(iot, addr + DCA_COM_OFFSET, com_dio_speed, COM_DIO_FREQ, 204 COM_TYPE_NORMAL, CONMODE); 205 206 return 0; 207 } 208
Indexes created Wed Oct 01 15:09:59 GMT 2025