com_mca.c revision 1.18.12.1
1 /* $NetBSD: com_mca.c,v 1.18.12.1 2008/03/24 07:15:30 keiichi 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 1.18.12.1 2008/03/24 07:15:30 keiichi 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 <sys/intr.h> 91 #include <sys/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(device_t, cfdata_t , void *); 107 void com_mca_attach(device_t, device_t, 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_NEW(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(int ma_id) 134 { 135 const struct com_mca_product *cpp; 136 137 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++) 138 if (cpp->cp_prodid == ma_id) 139 return (cpp); 140 141 return (NULL); 142 } 143 144 int 145 com_mca_probe(device_t parent, cfdata_t match, void *aux) 146 { 147 struct mca_attach_args *ma = aux; 148 149 if (com_mca_lookup(ma->ma_id)) 150 return (1); 151 152 return (0); 153 } 154 155 void 156 com_mca_attach(device_t parent, device_t self, void *aux) 157 { 158 struct com_mca_softc *isc = device_private(self); 159 struct com_softc *sc = &isc->sc_com; 160 int iobase, irq; 161 struct mca_attach_args *ma = aux; 162 const struct com_mca_product *cpp; 163 bus_space_handle_t ioh; 164 165 sc->sc_dev = self; 166 cpp = com_mca_lookup(ma->ma_id); 167 168 /* get iobase and irq */ 169 if ((*cpp->cp_getcfg)(ma, &iobase, &irq)) 170 return; 171 172 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &ioh)) { 173 aprint_error(": can't map i/o space\n"); 174 return; 175 } 176 177 COM_INIT_REGS(sc->sc_regs, ma->ma_iot, ioh, iobase); 178 sc->sc_frequency = COM_FREQ; 179 180 aprint_normal(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1, 181 iobase, iobase + COM_NPORTS - 1, irq); 182 183 com_attach_subr(sc); 184 185 aprint_normal_dev(self, "%s\n", cpp->cp_name); 186 187 isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL, 188 comintr, sc); 189 if (isc->sc_ih == NULL) { 190 aprint_error_dev(self, 191 "couldn't establish interrupt handler\n"); 192 return; 193 } 194 195 /* 196 * com_cleanup: shutdown hook for buggy BIOSs that don't 197 * recognize the UART without a disabled FIFO. 198 * XXX is this necessary on MCA ? --- jdolecek 199 */ 200 if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) 201 aprint_error_dev(self, "could not establish shutdown hook\n"); 202 } 203 204 /* map serial_X to iobase and irq */ 205 static const struct { 206 int iobase; 207 int irq; 208 } MCA_SERIAL[] = { 209 { 0x03f8, 4 }, /* SERIAL_1 */ 210 { 0x02f8, 3 }, /* SERIAL_2 */ 211 { 0x3220, 3 }, /* SERIAL_3 */ 212 { 0x3228, 3 }, /* SERIAL_4 */ 213 { 0x4220, 3 }, /* SERIAL_5 */ 214 { 0x4228, 3 }, /* SERIAL_6 */ 215 { 0x5220, 3 }, /* SERIAL_7 */ 216 { 0x5228, 3 }, /* SERIAL_8 */ 217 }; 218 219 /* 220 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't 221 * seem to support even AT commands, it's good as example for adding 222 * other stuff though. 223 */ 224 static int 225 ibm_modem_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp) 226 { 227 int pos2; 228 int snum; 229 230 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 231 232 /* 233 * POS register 2: (adf pos0) 234 * 7 6 5 4 3 2 1 0 235 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 236 * \_____ Serial Configuration: XX=SERIAL_XX 237 */ 238 239 snum = (pos2 & 0x0e) >> 1; 240 241 *iobasep = MCA_SERIAL[snum].iobase; 242 *irqp = MCA_SERIAL[snum].irq; 243 244 return (0); 245 } 246 247 /* 248 * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110. 249 */ 250 static int 251 neocom1_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp) 252 { 253 int pos2, pos3, pos4; 254 static const int neotech_irq[] = { 12, 9, 4, 3 }; 255 256 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 257 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 258 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 259 260 /* 261 * POS register 2: (adf pos0) 262 * 7 6 5 4 3 2 1 0 263 * 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled 264 * \____ IRQ: 11=3 10=4 01=9 00=12 265 * 266 * POS register 3: (adf pos1) 267 * 7 6 5 4 3 2 1 0 268 * \______/ 269 * \_________ I/O Address: bits 7-3 270 * 271 * POS register 4: (adf pos2) 272 * 7 6 5 4 3 2 1 0 273 * \_____________/ 274 * \__ I/O Address: bits 15-8 275 */ 276 277 *iobasep = (pos4 << 8) | (pos3 & 0xf8); 278 *irqp = neotech_irq[(pos2 & 0x06) >> 1]; 279 280 return (0); 281 } 282 283 /* 284 * Get configuration for IBM Multi-Protocol Communications Adapter. 285 * We only support SERIAL mode, bail out if set to SDLC or BISYNC. 286 */ 287 static int 288 ibm_mpcom_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp) 289 { 290 int snum, pos2; 291 292 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 293 294 /* 295 * For SERIAL mode, bit 4 has to be 0. 296 * 297 * POS register 2: (adf pos0) 298 * 7 6 5 4 3 2 1 0 299 * 0 \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 300 * \_____ Serial Configuration: XX=SERIAL_XX 301 */ 302 303 if (pos2 & 0x10) { 304 aprint_error(": not set to SERIAL mode, ignored\n"); 305 return (1); 306 } 307 308 snum = (pos2 & 0x0e) >> 1; 309 310 *iobasep = MCA_SERIAL[snum].iobase; 311 *irqp = MCA_SERIAL[snum].irq; 312 313 return (0); 314 } 315
Indexes created Sun Oct 19 19:09:49 GMT 2025