com_mca.c revision 1.2.2.5
1 /* $NetBSD: com_mca.c,v 1.2.2.5 2002/01/08 00:30:40 nathanw 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/cdefs.h> 79 __KERNEL_RCSID(0, "$NetBSD: com_mca.c,v 1.2.2.5 2002/01/08 00:30:40 nathanw Exp $"); 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 #include <sys/ioctl.h> 84 #include <sys/select.h> 85 #include <sys/tty.h> 86 #include <sys/proc.h> 87 #include <sys/user.h> 88 #include <sys/file.h> 89 #include <sys/uio.h> 90 #include <sys/kernel.h> 91 #include <sys/syslog.h> 92 #include <sys/device.h> 93 94 #include <machine/intr.h> 95 #include <machine/bus.h> 96 97 #include <dev/ic/comreg.h> 98 #include <dev/ic/comvar.h> 99 100 #include <dev/mca/mcavar.h> 101 #include <dev/mca/mcadevs.h> 102 103 struct com_mca_softc { 104 struct com_softc sc_com; /* real "com" softc */ 105 106 /* MCA-specific goo. */ 107 void *sc_ih; /* interrupt handler */ 108 }; 109 110 int com_mca_probe __P((struct device *, struct cfdata *, void *)); 111 void com_mca_attach __P((struct device *, struct device *, void *)); 112 void com_mca_cleanup __P((void *)); 113 114 static int ibm_modem_getcfg __P((struct mca_attach_args *, int *, int *)); 115 static int neocom1_getcfg __P((struct mca_attach_args *, int *, int *)); 116 static int ibm_mpcom_getcfg __P((struct mca_attach_args *, int *, int *)); 117 118 struct cfattach com_mca_ca = { 119 sizeof(struct com_mca_softc), com_mca_probe, com_mca_attach 120 }; 121 122 static const struct com_mca_product { 123 u_int32_t cp_prodid; /* MCA product ID */ 124 const char *cp_name; /* device name */ 125 int (*cp_getcfg) __P((struct mca_attach_args *, int *iobase, int *irq)); 126 /* get device i/o base and irq */ 127 } com_mca_products[] = { 128 { MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg }, 129 { MCA_PRODUCT_NEOCOM1, "NeoTecH Single RS-232 Async. Adapter, SM110", 130 neocom1_getcfg }, 131 { MCA_PRODUCT_IBM_MPCOM,"IBM Multi-Protocol Communications Adapter", 132 ibm_mpcom_getcfg }, 133 { 0, NULL, NULL }, 134 }; 135 136 static const struct com_mca_product *com_mca_lookup __P((int)); 137 138 static const struct com_mca_product * 139 com_mca_lookup(ma_id) 140 int ma_id; 141 { 142 const struct com_mca_product *cpp; 143 144 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++) 145 if (cpp->cp_prodid == ma_id) 146 return (cpp); 147 148 return (NULL); 149 } 150 151 int 152 com_mca_probe(parent, match, aux) 153 struct device *parent; 154 struct cfdata *match; 155 void *aux; 156 { 157 struct mca_attach_args *ma = aux; 158 159 if (com_mca_lookup(ma->ma_id)) 160 return (1); 161 162 return (0); 163 } 164 165 void 166 com_mca_attach(parent, self, aux) 167 struct device *parent, *self; 168 void *aux; 169 { 170 struct com_mca_softc *isc = (void *)self; 171 struct com_softc *sc = &isc->sc_com; 172 int iobase, irq; 173 struct mca_attach_args *ma = aux; 174 const struct com_mca_product *cpp; 175 176 cpp = com_mca_lookup(ma->ma_id); 177 178 /* get iobase and irq */ 179 if ((*cpp->cp_getcfg)(ma, &iobase, &irq)) 180 return; 181 182 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) { 183 printf(": can't map i/o space\n"); 184 return; 185 } 186 187 sc->sc_frequency = COM_FREQ; 188 sc->sc_iot = ma->ma_iot; 189 sc->sc_iobase = iobase; 190 191 printf(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1, 192 iobase, iobase + COM_NPORTS - 1, irq); 193 194 com_attach_subr(sc); 195 196 printf("%s: %s\n", sc->sc_dev.dv_xname, cpp->cp_name); 197 198 isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL, 199 comintr, sc); 200 if (isc->sc_ih == NULL) { 201 printf("%s: couldn't establish interrupt handler\n", 202 sc->sc_dev.dv_xname); 203 return; 204 } 205 206 /* 207 * Shutdown hook for buggy BIOSs that don't recognize the UART 208 * without a disabled FIFO. 209 * XXX is this necessary on MCA ? --- jdolecek 210 */ 211 if (shutdownhook_establish(com_mca_cleanup, sc) == NULL) 212 panic("com_mca_attach: could not establish shutdown hook"); 213 } 214 215 void 216 com_mca_cleanup(arg) 217 void *arg; 218 { 219 struct com_softc *sc = arg; 220 221 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 222 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 223 } 224 225 /* map serial_X to iobase and irq */ 226 static const struct { 227 int iobase; 228 int irq; 229 } MCA_SERIAL[] = { 230 { 0x03f8, 4 }, /* SERIAL_1 */ 231 { 0x02f8, 3 }, /* SERIAL_2 */ 232 { 0x3220, 3 }, /* SERIAL_3 */ 233 { 0x3228, 3 }, /* SERIAL_4 */ 234 { 0x4220, 3 }, /* SERIAL_5 */ 235 { 0x4228, 3 }, /* SERIAL_6 */ 236 { 0x5220, 3 }, /* SERIAL_7 */ 237 { 0x5228, 3 }, /* SERIAL_8 */ 238 }; 239 240 /* 241 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't 242 * seem to support even AT commands, it's good as example for adding 243 * other stuff though. 244 */ 245 static int 246 ibm_modem_getcfg(ma, iobasep, irqp) 247 struct mca_attach_args *ma; 248 int *iobasep, *irqp; 249 { 250 int pos2; 251 int snum; 252 253 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 254 255 /* 256 * POS register 2: (adf pos0) 257 * 7 6 5 4 3 2 1 0 258 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 259 * \_____ Serial Configuration: XX=SERIAL_XX 260 */ 261 262 snum = (pos2 & 0x0e) >> 1; 263 264 *iobasep = MCA_SERIAL[snum].iobase; 265 *irqp = MCA_SERIAL[snum].irq; 266 267 return (0); 268 } 269 270 /* 271 * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110. 272 */ 273 static int 274 neocom1_getcfg(ma, iobasep, irqp) 275 struct mca_attach_args *ma; 276 int *iobasep, *irqp; 277 { 278 int pos2, pos3, pos4; 279 static const int neotech_irq[] = { 12, 9, 4, 3 }; 280 281 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 282 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 283 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 284 285 /* 286 * POS register 2: (adf pos0) 287 * 7 6 5 4 3 2 1 0 288 * 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled 289 * \____ IRQ: 11=3 10=4 01=9 00=12 290 * 291 * POS register 3: (adf pos1) 292 * 7 6 5 4 3 2 1 0 293 * \______/ 294 * \_________ I/O Address: bits 7-3 295 * 296 * POS register 4: (adf pos2) 297 * 7 6 5 4 3 2 1 0 298 * \_____________/ 299 * \__ I/O Address: bits 15-8 300 */ 301 302 *iobasep = (pos4 << 8) | (pos3 & 0xf8); 303 *irqp = neotech_irq[(pos2 & 0x06) >> 1]; 304 305 return (0); 306 } 307 308 /* 309 * Get configuration for IBM Multi-Protocol Communications Adapter. 310 * We only support SERIAL mode, bail out if set to SDLC or BISYNC. 311 */ 312 static int 313 ibm_mpcom_getcfg(ma, iobasep, irqp) 314 struct mca_attach_args *ma; 315 int *iobasep, *irqp; 316 { 317 int snum, pos2; 318 319 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 320 321 /* 322 * For SERIAL mode, bit 4 has to be 0. 323 * 324 * POS register 2: (adf pos0) 325 * 7 6 5 4 3 2 1 0 326 * 0 \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 327 * \_____ Serial Configuration: XX=SERIAL_XX 328 */ 329 330 if (pos2 & 0x10) { 331 printf(": not set to SERIAL mode, ignored\n"); 332 return (1); 333 } 334 335 snum = (pos2 & 0x0e) >> 1; 336 337 *iobasep = MCA_SERIAL[snum].iobase; 338 *irqp = MCA_SERIAL[snum].irq; 339 340 return (0); 341 } 342
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