com_mca.c revision 1.15
1 /* $NetBSD: com_mca.c,v 1.15 2006/07/13 22:56:02 gdamore 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. 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 /* 71 * This driver attaches serial port boards and internal modems. 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: com_mca.c,v 1.15 2006/07/13 22:56:02 gdamore Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/ioctl.h> 80 #include <sys/select.h> 81 #include <sys/tty.h> 82 #include <sys/proc.h> 83 #include <sys/user.h> 84 #include <sys/file.h> 85 #include <sys/uio.h> 86 #include <sys/kernel.h> 87 #include <sys/syslog.h> 88 #include <sys/device.h> 89 90 #include <machine/intr.h> 91 #include <machine/bus.h> 92 93 #include <dev/ic/comreg.h> 94 #include <dev/ic/comvar.h> 95 96 #include <dev/mca/mcavar.h> 97 #include <dev/mca/mcadevs.h> 98 99 struct com_mca_softc { 100 struct com_softc sc_com; /* real "com" softc */ 101 102 /* MCA-specific goo. */ 103 void *sc_ih; /* interrupt handler */ 104 }; 105 106 int com_mca_probe(struct device *, struct cfdata *, void *); 107 void com_mca_attach(struct device *, struct device *, void *); 108 109 static int ibm_modem_getcfg(struct mca_attach_args *, int *, int *); 110 static int neocom1_getcfg(struct mca_attach_args *, int *, int *); 111 static int ibm_mpcom_getcfg(struct mca_attach_args *, int *, int *); 112 113 CFATTACH_DECL(com_mca, sizeof(struct com_mca_softc), 114 com_mca_probe, com_mca_attach, NULL, NULL); 115 116 static const struct com_mca_product { 117 u_int32_t cp_prodid; /* MCA product ID */ 118 const char *cp_name; /* device name */ 119 int (*cp_getcfg)(struct mca_attach_args *, int *iobase, int *irq); 120 /* get device i/o base and irq */ 121 } com_mca_products[] = { 122 { MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg }, 123 { MCA_PRODUCT_NEOCOM1, "NeoTecH Single RS-232 Async. Adapter, SM110", 124 neocom1_getcfg }, 125 { MCA_PRODUCT_IBM_MPCOM,"IBM Multi-Protocol Communications Adapter", 126 ibm_mpcom_getcfg }, 127 { 0, NULL, NULL }, 128 }; 129 130 static const struct com_mca_product *com_mca_lookup(int); 131 132 static const struct com_mca_product * 133 com_mca_lookup(ma_id) 134 int ma_id; 135 { 136 const struct com_mca_product *cpp; 137 138 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++) 139 if (cpp->cp_prodid == ma_id) 140 return (cpp); 141 142 return (NULL); 143 } 144 145 int 146 com_mca_probe(parent, match, aux) 147 struct device *parent; 148 struct cfdata *match; 149 void *aux; 150 { 151 struct mca_attach_args *ma = aux; 152 153 if (com_mca_lookup(ma->ma_id)) 154 return (1); 155 156 return (0); 157 } 158 159 void 160 com_mca_attach(parent, self, aux) 161 struct device *parent, *self; 162 void *aux; 163 { 164 struct com_mca_softc *isc = device_private(self); 165 struct com_softc *sc = &isc->sc_com; 166 int iobase, irq; 167 struct mca_attach_args *ma = aux; 168 const struct com_mca_product *cpp; 169 bus_space_handle_t ioh; 170 171 cpp = com_mca_lookup(ma->ma_id); 172 173 /* get iobase and irq */ 174 if ((*cpp->cp_getcfg)(ma, &iobase, &irq)) 175 return; 176 177 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &ioh)) { 178 printf(": can't map i/o space\n"); 179 return; 180 } 181 182 COM_INIT_REGS(sc->sc_regs, ma->ma_iot, ioh, iobase); 183 sc->sc_frequency = COM_FREQ; 184 185 printf(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1, 186 iobase, iobase + COM_NPORTS - 1, irq); 187 188 com_attach_subr(sc); 189 190 printf("%s: %s\n", sc->sc_dev.dv_xname, cpp->cp_name); 191 192 isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL, 193 comintr, sc); 194 if (isc->sc_ih == NULL) { 195 printf("%s: couldn't establish interrupt handler\n", 196 sc->sc_dev.dv_xname); 197 return; 198 } 199 200 /* 201 * Shutdown hook for buggy BIOSs that don't recognize the UART 202 * without a disabled FIFO. 203 * XXX is this necessary on MCA ? --- jdolecek 204 */ 205 if (shutdownhook_establish(com_cleanup, sc) == NULL) 206 panic("com_mca_attach: could not establish shutdown hook"); 207 } 208 209 /* map serial_X to iobase and irq */ 210 static const struct { 211 int iobase; 212 int irq; 213 } MCA_SERIAL[] = { 214 { 0x03f8, 4 }, /* SERIAL_1 */ 215 { 0x02f8, 3 }, /* SERIAL_2 */ 216 { 0x3220, 3 }, /* SERIAL_3 */ 217 { 0x3228, 3 }, /* SERIAL_4 */ 218 { 0x4220, 3 }, /* SERIAL_5 */ 219 { 0x4228, 3 }, /* SERIAL_6 */ 220 { 0x5220, 3 }, /* SERIAL_7 */ 221 { 0x5228, 3 }, /* SERIAL_8 */ 222 }; 223 224 /* 225 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't 226 * seem to support even AT commands, it's good as example for adding 227 * other stuff though. 228 */ 229 static int 230 ibm_modem_getcfg(ma, iobasep, irqp) 231 struct mca_attach_args *ma; 232 int *iobasep, *irqp; 233 { 234 int pos2; 235 int snum; 236 237 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 238 239 /* 240 * POS register 2: (adf pos0) 241 * 7 6 5 4 3 2 1 0 242 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 243 * \_____ Serial Configuration: XX=SERIAL_XX 244 */ 245 246 snum = (pos2 & 0x0e) >> 1; 247 248 *iobasep = MCA_SERIAL[snum].iobase; 249 *irqp = MCA_SERIAL[snum].irq; 250 251 return (0); 252 } 253 254 /* 255 * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110. 256 */ 257 static int 258 neocom1_getcfg(ma, iobasep, irqp) 259 struct mca_attach_args *ma; 260 int *iobasep, *irqp; 261 { 262 int pos2, pos3, pos4; 263 static const int neotech_irq[] = { 12, 9, 4, 3 }; 264 265 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 266 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 267 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 268 269 /* 270 * POS register 2: (adf pos0) 271 * 7 6 5 4 3 2 1 0 272 * 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled 273 * \____ IRQ: 11=3 10=4 01=9 00=12 274 * 275 * POS register 3: (adf pos1) 276 * 7 6 5 4 3 2 1 0 277 * \______/ 278 * \_________ I/O Address: bits 7-3 279 * 280 * POS register 4: (adf pos2) 281 * 7 6 5 4 3 2 1 0 282 * \_____________/ 283 * \__ I/O Address: bits 15-8 284 */ 285 286 *iobasep = (pos4 << 8) | (pos3 & 0xf8); 287 *irqp = neotech_irq[(pos2 & 0x06) >> 1]; 288 289 return (0); 290 } 291 292 /* 293 * Get configuration for IBM Multi-Protocol Communications Adapter. 294 * We only support SERIAL mode, bail out if set to SDLC or BISYNC. 295 */ 296 static int 297 ibm_mpcom_getcfg(ma, iobasep, irqp) 298 struct mca_attach_args *ma; 299 int *iobasep, *irqp; 300 { 301 int snum, pos2; 302 303 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 304 305 /* 306 * For SERIAL mode, bit 4 has to be 0. 307 * 308 * POS register 2: (adf pos0) 309 * 7 6 5 4 3 2 1 0 310 * 0 \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 311 * \_____ Serial Configuration: XX=SERIAL_XX 312 */ 313 314 if (pos2 & 0x10) { 315 printf(": not set to SERIAL mode, ignored\n"); 316 return (1); 317 } 318 319 snum = (pos2 & 0x0e) >> 1; 320 321 *iobasep = MCA_SERIAL[snum].iobase; 322 *irqp = MCA_SERIAL[snum].irq; 323 324 return (0); 325 } 326
Indexes created Fri Sep 26 20:09:58 GMT 2025