com_mca.c revision 1.3
1 /* $NetBSD: com_mca.c,v 1.3 2001/04/20 10:03:35 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 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. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)com.c 7.5 (Berkeley) 5/16/91 72 */ 73 74 /* 75 * This driver attaches serial port boards and internal modems. 76 */ 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/ioctl.h> 81 #include <sys/select.h> 82 #include <sys/tty.h> 83 #include <sys/proc.h> 84 #include <sys/user.h> 85 #include <sys/file.h> 86 #include <sys/uio.h> 87 #include <sys/kernel.h> 88 #include <sys/syslog.h> 89 #include <sys/types.h> 90 #include <sys/device.h> 91 92 #include <machine/intr.h> 93 #include <machine/bus.h> 94 95 #include <dev/ic/comreg.h> 96 #include <dev/ic/comvar.h> 97 98 #include <dev/mca/mcavar.h> 99 #include <dev/mca/mcadevs.h> 100 101 struct com_mca_softc { 102 struct com_softc sc_com; /* real "com" softc */ 103 104 /* MCA-specific goo. */ 105 void *sc_ih; /* interrupt handler */ 106 }; 107 108 int com_mca_probe __P((struct device *, struct cfdata *, void *)); 109 void com_mca_attach __P((struct device *, struct device *, void *)); 110 void com_mca_cleanup __P((void *)); 111 112 static int ibm_modem_getcfg __P((struct mca_attach_args *, int *, int *)); 113 static int neocom1_getcfg __P((struct mca_attach_args *, int *, int *)); 114 115 struct cfattach com_mca_ca = { 116 sizeof(struct com_mca_softc), com_mca_probe, com_mca_attach 117 }; 118 119 static const struct com_mca_product { 120 u_int32_t cp_prodid; /* MCA product ID */ 121 const char *cp_name; /* device name */ 122 int (*cp_getcfg) __P((struct mca_attach_args *, int *iobase, int *irq)); 123 /* get device i/o base and irq */ 124 } com_mca_products[] = { 125 { MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg }, 126 { MCA_PRODUCT_NEOCOM1, "NeoTecH Single RS-232 Async. Adapter, SM110", 127 neocom1_getcfg }, 128 { 0, NULL, NULL }, 129 }; 130 131 static const struct com_mca_product *com_mca_lookup __P((int)); 132 133 static const struct com_mca_product * 134 com_mca_lookup(ma_id) 135 int ma_id; 136 { 137 const struct com_mca_product *cpp; 138 139 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++) 140 if (cpp->cp_prodid == ma_id) 141 return (cpp); 142 143 return (NULL); 144 } 145 146 int 147 com_mca_probe(parent, match, aux) 148 struct device *parent; 149 struct cfdata *match; 150 void *aux; 151 { 152 struct mca_attach_args *ma = aux; 153 154 if (com_mca_lookup(ma->ma_id)) 155 return (1); 156 157 return (0); 158 } 159 160 void 161 com_mca_attach(parent, self, aux) 162 struct device *parent, *self; 163 void *aux; 164 { 165 struct com_mca_softc *isc = (void *)self; 166 struct com_softc *sc = &isc->sc_com; 167 int iobase, irq; 168 struct mca_attach_args *ma = aux; 169 const struct com_mca_product *cpp; 170 171 cpp = com_mca_lookup(ma->ma_id); 172 173 /* get iobase and irq */ 174 if ((*cpp->cp_getcfg)(ma, &iobase, &irq)) { 175 printf(": com_mca_attach: could not get config\n"); 176 return; 177 } 178 179 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) { 180 printf(": can't map i/o space\n"); 181 return; 182 } 183 184 sc->sc_frequency = COM_FREQ; 185 sc->sc_iot = ma->ma_iot; 186 sc->sc_iobase = iobase; 187 188 printf(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1, 189 iobase, iobase + COM_NPORTS - 1, irq); 190 191 com_attach_subr(sc); 192 193 printf("%s: %s\n", sc->sc_dev.dv_xname, cpp->cp_name); 194 195 isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL, 196 comintr, sc); 197 if (isc->sc_ih == NULL) { 198 printf("%s: couldn't establish interrupt handler\n", 199 sc->sc_dev.dv_xname); 200 return; 201 } 202 203 /* 204 * Shutdown hook for buggy BIOSs that don't recognize the UART 205 * without a disabled FIFO. 206 * XXX is this necessary on MCA ? --- jdolecek 207 */ 208 if (shutdownhook_establish(com_mca_cleanup, sc) == NULL) 209 panic("com_mca_attach: could not establish shutdown hook"); 210 } 211 212 void 213 com_mca_cleanup(arg) 214 void *arg; 215 { 216 struct com_softc *sc = arg; 217 218 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 219 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 220 } 221 222 /* map serial_X to iobase and irq */ 223 static const struct { 224 int iobase; 225 int irq; 226 } MCA_SERIAL[] = { 227 { 0x03f8, 4 }, /* SERIAL_1 */ 228 { 0x02f8, 3 }, /* SERIAL_2 */ 229 { 0x3220, 3 }, /* SERIAL_3 */ 230 { 0x3228, 3 }, /* SERIAL_4 */ 231 { 0x4220, 3 }, /* SERIAL_5 */ 232 { 0x4228, 3 }, /* SERIAL_6 */ 233 { 0x5220, 3 }, /* SERIAL_7 */ 234 { 0x5228, 3 }, /* SERIAL_8 */ 235 }; 236 237 /* 238 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't 239 * seem to support even AT commands, it's good as example for adding 240 * other stuff though. 241 */ 242 static int 243 ibm_modem_getcfg(ma, iobasep, irqp) 244 struct mca_attach_args *ma; 245 int *iobasep, *irqp; 246 { 247 int pos2; 248 int snum; 249 250 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 251 252 /* 253 * POS register 2: (adf pos0) 254 * 7 6 5 4 3 2 1 0 255 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 256 * \_____ Serial Configuration: XX=SERIAL_XX 257 */ 258 259 snum = (pos2 & 0x0e) >> 1; 260 261 *iobasep = MCA_SERIAL[snum].iobase; 262 *irqp = MCA_SERIAL[snum].irq; 263 264 return (0); 265 } 266 267 /* 268 * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110. 269 */ 270 static int 271 neocom1_getcfg(ma, iobasep, irqp) 272 struct mca_attach_args *ma; 273 int *iobasep, *irqp; 274 { 275 int pos2, pos3, pos4; 276 static const int neotech_irq[] = { 12, 9, 4, 3 }; 277 278 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 279 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 280 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 281 282 /* 283 * POS register 2: (adf pos0) 284 * 7 6 5 4 3 2 1 0 285 * 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled 286 * \____ IRQ: 11=3 10=4 01=9 00=12 287 * 288 * POS register 3: (adf pos1) 289 * 7 6 5 4 3 2 1 0 290 * \______/ 291 * \_________ I/O Address: bits 7-3 292 * 293 * POS register 4: (adf pos2) 294 * 7 6 5 4 3 2 1 0 295 * \_____________/ 296 * \__ I/O Address: bits 15-8 297 */ 298 299 *iobasep = (pos4 << 8) | (pos3 & 0xf8); 300 *irqp = neotech_irq[(pos2 & 0x06) >> 1]; 301 302 return (0); 303 } 304
Indexes created Fri Sep 26 20:09:58 GMT 2025