com_mca.c revision 1.1
1 /* $NetBSD: com_mca.c,v 1.1 2001/03/19 21:56:43 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 static int ibm_modem_getcfg __P((struct mca_attach_args *, int *, int *)); 112 113 struct cfattach com_mca_ca = { 114 sizeof(struct com_mca_softc), com_mca_probe, com_mca_attach 115 }; 116 117 static const struct com_mca_product { 118 u_int32_t cp_prodid; /* MCA product ID */ 119 const char *cp_name; /* device name */ 120 int (*cp_getcfg) __P((struct mca_attach_args *, int *iobase, int *irq)); 121 /* get device i/o base and irq */ 122 } com_mca_products[] = { 123 { MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg }, 124 { 0, NULL, NULL }, 125 }; 126 127 static const struct com_mca_product *com_mca_lookup __P((int)); 128 129 static const struct com_mca_product * 130 com_mca_lookup(ma_id) 131 int ma_id; 132 { 133 const struct com_mca_product *cpp; 134 135 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++) 136 if (cpp->cp_prodid == ma_id) 137 return (cpp); 138 139 return (NULL); 140 } 141 142 int 143 com_mca_probe(parent, match, aux) 144 struct device *parent; 145 struct cfdata *match; 146 void *aux; 147 { 148 struct mca_attach_args *ma = aux; 149 150 if (com_mca_lookup(ma->ma_id)) 151 return (1); 152 153 return (0); 154 } 155 156 void 157 com_mca_attach(parent, self, aux) 158 struct device *parent, *self; 159 void *aux; 160 { 161 struct com_mca_softc *isc = (void *)self; 162 struct com_softc *sc = &isc->sc_com; 163 int iobase, irq; 164 struct mca_attach_args *ma = aux; 165 const struct com_mca_product *cpp; 166 167 cpp = com_mca_lookup(ma->ma_id); 168 169 /* get iobase and irq */ 170 if ((*cpp->cp_getcfg)(ma, &iobase, &irq)) { 171 printf(": com_mca_attach: could not get config\n"); 172 return; 173 } 174 175 printf(" slot %d i/o %#x-%#x irq %d: %s\n", ma->ma_slot + 1, 176 iobase, iobase + COM_NPORTS - 1, 177 irq, cpp->cp_name); 178 179 printf("%s", sc->sc_dev.dv_xname); 180 181 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) { 182 printf(": can't map i/o space\n"); 183 return; 184 } 185 186 sc->sc_frequency = COM_FREQ; 187 sc->sc_iot = ma->ma_iot; 188 sc->sc_iobase = iobase; 189 190 com_attach_subr(sc); 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_mca_cleanup, sc) == NULL) 206 panic("com_mca_attach: could not establish shutdown hook"); 207 } 208 209 void 210 com_mca_cleanup(arg) 211 void *arg; 212 { 213 struct com_softc *sc = arg; 214 215 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 216 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 217 } 218 219 /* map serial_X to iobase and irq */ 220 static const struct { 221 int iobase; 222 int irq; 223 } MCA_SERIAL[] = { 224 { 0x03f8, 4 }, /* SERIAL_1 */ 225 { 0x02f8, 3 }, /* SERIAL_2 */ 226 { 0x3220, 3 }, /* SERIAL_3 */ 227 { 0x3228, 3 }, /* SERIAL_4 */ 228 { 0x4220, 3 }, /* SERIAL_5 */ 229 { 0x4228, 3 }, /* SERIAL_6 */ 230 { 0x5220, 3 }, /* SERIAL_7 */ 231 { 0x5228, 3 }, /* SERIAL_8 */ 232 }; 233 234 /* 235 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't 236 * seem to support even AT commands, it's good as example for adding 237 * other stuff though. 238 */ 239 static int 240 ibm_modem_getcfg(ma, iobasep, irqp) 241 struct mca_attach_args *ma; 242 int *iobasep, *irqp; 243 { 244 int pos2; 245 int snum; 246 247 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 248 249 /* 250 * POS register 2: (adf pos0) 251 * 7 6 5 4 3 2 1 0 252 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled 253 * \_____ Serial Configuration: XX=SERIAL_XX 254 */ 255 256 snum = (pos2 & 0x0e) >> 1; 257 258 *iobasep = MCA_SERIAL[snum].iobase; 259 *irqp = MCA_SERIAL[snum].irq; 260 261 return (0); 262 } 263
Indexes created Fri Sep 26 08:10:20 GMT 2025