com_mca.c revision 1.4
1 /* $NetBSD: com_mca.c,v 1.4 2001/04/20 11:19:27 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 static int ibm_mpcom_getcfg __P((struct mca_attach_args *, int *, int *)); 115 116 struct cfattach com_mca_ca = { 117 sizeof(struct com_mca_softc), com_mca_probe, com_mca_attach 118 }; 119 120 static const struct com_mca_product { 121 u_int32_t cp_prodid; /* MCA product ID */ 122 const char *cp_name; /* device name */ 123 int (*cp_getcfg) __P((struct mca_attach_args *, int *iobase, int *irq)); 124 /* get device i/o base and irq */ 125 } com_mca_products[] = { 126 { MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg }, 127 { MCA_PRODUCT_NEOCOM1, "NeoTecH Single RS-232 Async. Adapter, SM110", 128 neocom1_getcfg }, 129 { MCA_PRODUCT_IBM_MPCOM,"IBM Multi-Protocol Communications Adapter", 130 ibm_mpcom_getcfg }, 131 { 0, NULL, NULL }, 132 }; 133 134 static const struct com_mca_product *com_mca_lookup __P((int)); 135 136 static const struct com_mca_product * 137 com_mca_lookup(ma_id) 138 int ma_id; 139 { 140 const struct com_mca_product *cpp; 141 142 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++) 143 if (cpp->cp_prodid == ma_id) 144 return (cpp); 145 146 return (NULL); 147 } 148 149 int 150 com_mca_probe(parent, match, aux) 151 struct device *parent; 152 struct cfdata *match; 153 void *aux; 154 { 155 struct mca_attach_args *ma = aux; 156 157 if (com_mca_lookup(ma->ma_id)) 158 return (1); 159 160 return (0); 161 } 162 163 void 164 com_mca_attach(parent, self, aux) 165 struct device *parent, *self; 166 void *aux; 167 { 168 struct com_mca_softc *isc = (void *)self; 169 struct com_softc *sc = &isc->sc_com; 170 int iobase, irq; 171 struct mca_attach_args *ma = aux; 172 const struct com_mca_product *cpp; 173 174 cpp = com_mca_lookup(ma->ma_id); 175 176 /* get iobase and irq */ 177 if ((*cpp->cp_getcfg)(ma, &iobase, &irq)) 178 return; 179 180 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) { 181 printf(": can't map i/o space\n"); 182 return; 183 } 184 185 sc->sc_frequency = COM_FREQ; 186 sc->sc_iot = ma->ma_iot; 187 sc->sc_iobase = iobase; 188 189 printf(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1, 190 iobase, iobase + COM_NPORTS - 1, irq); 191 192 com_attach_subr(sc); 193 194 printf("%s: %s\n", sc->sc_dev.dv_xname, cpp->cp_name); 195 196 isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL, 197 comintr, sc); 198 if (isc->sc_ih == NULL) { 199 printf("%s: couldn't establish interrupt handler\n", 200 sc->sc_dev.dv_xname); 201 return; 202 } 203 204 /* 205 * Shutdown hook for buggy BIOSs that don't recognize the UART 206 * without a disabled FIFO. 207 * XXX is this necessary on MCA ? --- jdolecek 208 */ 209 if (shutdownhook_establish(com_mca_cleanup, sc) == NULL) 210 panic("com_mca_attach: could not establish shutdown hook"); 211 } 212 213 void 214 com_mca_cleanup(arg) 215 void *arg; 216 { 217 struct com_softc *sc = arg; 218 219 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 220 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 221 } 222 223 /* map serial_X to iobase and irq */ 224 static const struct { 225 int iobase; 226 int irq; 227 } MCA_SERIAL[] = { 228 { 0x03f8, 4 }, /* SERIAL_1 */ 229 { 0x02f8, 3 }, /* SERIAL_2 */ 230 { 0x3220, 3 }, /* SERIAL_3 */ 231 { 0x3228, 3 }, /* SERIAL_4 */ 232 { 0x4220, 3 }, /* SERIAL_5 */ 233 { 0x4228, 3 }, /* SERIAL_6 */ 234 { 0x5220, 3 }, /* SERIAL_7 */ 235 { 0x5228, 3 }, /* SERIAL_8 */ 236 }; 237 238 /* 239 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't 240 * seem to support even AT commands, it's good as example for adding 241 * other stuff though. 242 */ 243 static int 244 ibm_modem_getcfg(ma, iobasep, irqp) 245 struct mca_attach_args *ma; 246 int *iobasep, *irqp; 247 { 248 int pos2; 249 int snum; 250 251 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 252 253 /* 254 * POS register 2: (adf pos0) 255 * 7 6 5 4 3 2 1 0 256 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 257 * \_____ Serial Configuration: XX=SERIAL_XX 258 */ 259 260 snum = (pos2 & 0x0e) >> 1; 261 262 *iobasep = MCA_SERIAL[snum].iobase; 263 *irqp = MCA_SERIAL[snum].irq; 264 265 return (0); 266 } 267 268 /* 269 * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110. 270 */ 271 static int 272 neocom1_getcfg(ma, iobasep, irqp) 273 struct mca_attach_args *ma; 274 int *iobasep, *irqp; 275 { 276 int pos2, pos3, pos4; 277 static const int neotech_irq[] = { 12, 9, 4, 3 }; 278 279 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 280 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 281 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 282 283 /* 284 * POS register 2: (adf pos0) 285 * 7 6 5 4 3 2 1 0 286 * 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled 287 * \____ IRQ: 11=3 10=4 01=9 00=12 288 * 289 * POS register 3: (adf pos1) 290 * 7 6 5 4 3 2 1 0 291 * \______/ 292 * \_________ I/O Address: bits 7-3 293 * 294 * POS register 4: (adf pos2) 295 * 7 6 5 4 3 2 1 0 296 * \_____________/ 297 * \__ I/O Address: bits 15-8 298 */ 299 300 *iobasep = (pos4 << 8) | (pos3 & 0xf8); 301 *irqp = neotech_irq[(pos2 & 0x06) >> 1]; 302 303 return (0); 304 } 305 306 /* 307 * Get configuration for IBM Multi-Protocol Communications Adapter. 308 * We only support SERIAL mode, bail out if set to SDLC or BISYNC. 309 */ 310 static int 311 ibm_mpcom_getcfg(ma, iobasep, irqp) 312 struct mca_attach_args *ma; 313 int *iobasep, *irqp; 314 { 315 int snum, pos2; 316 317 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 318 319 /* 320 * For SERIAL mode, bit 4 has to be 0. 321 * 322 * POS register 2: (adf pos0) 323 * 7 6 5 4 3 2 1 0 324 * 0 \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 325 * \_____ Serial Configuration: XX=SERIAL_XX 326 */ 327 328 if (pos2 & 0x10) { 329 printf(": not set to SERIAL mode, ignored\n"); 330 return (1); 331 } 332 333 snum = (pos2 & 0x0e) >> 1; 334 335 *iobasep = MCA_SERIAL[snum].iobase; 336 *irqp = MCA_SERIAL[snum].irq; 337 338 return (0); 339 } 340
Indexes created Fri Sep 26 20:09:58 GMT 2025