ioasic.c revision 1.26
1 /* $NetBSD: ioasic.c,v 1.26 1999/10/27 10:16:00 nisimura Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Keith Bostic, Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_dec_3000_300.h" 68 69 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 70 71 __KERNEL_RCSID(0, "$NetBSD: ioasic.c,v 1.26 1999/10/27 10:16:00 nisimura Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/kernel.h> 75 #include <sys/systm.h> 76 #include <sys/device.h> 77 78 #include <machine/autoconf.h> 79 #include <machine/bus.h> 80 #include <machine/pte.h> 81 #include <machine/rpb.h> 82 #ifndef EVCNT_COUNTERS 83 #include <machine/intrcnt.h> 84 #endif 85 86 #include <dev/tc/tcvar.h> 87 #include <alpha/tc/ioasicreg.h> 88 #include <dev/tc/ioasicvar.h> 89 90 /* Definition of the driver for autoconfig. */ 91 int ioasicmatch __P((struct device *, struct cfdata *, void *)); 92 void ioasicattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach ioasic_ca = { 95 sizeof(struct ioasic_softc), ioasicmatch, ioasicattach, 96 }; 97 98 int ioasic_intr __P((void *)); 99 int ioasic_intrnull __P((void *)); 100 101 #define C(x) ((void *)(x)) 102 103 #define IOASIC_DEV_LANCE 0 104 #define IOASIC_DEV_SCC0 1 105 #define IOASIC_DEV_SCC1 2 106 #define IOASIC_DEV_ISDN 3 107 108 #define IOASIC_DEV_BOGUS -1 109 110 #define IOASIC_NCOOKIES 4 111 112 struct ioasic_dev ioasic_devs[] = { 113 /* XXX lance name */ 114 { "lance", IOASIC_SLOT_3_START, C(IOASIC_DEV_LANCE), 115 IOASIC_INTR_LANCE, }, 116 { "z8530 ", IOASIC_SLOT_4_START, C(IOASIC_DEV_SCC0), 117 IOASIC_INTR_SCC_0, }, 118 { "z8530 ", IOASIC_SLOT_6_START, C(IOASIC_DEV_SCC1), 119 IOASIC_INTR_SCC_1, }, 120 { "TOY_RTC ", IOASIC_SLOT_8_START, C(IOASIC_DEV_BOGUS), 121 0, }, 122 { "AMD79c30", IOASIC_SLOT_9_START, C(IOASIC_DEV_ISDN), 123 IOASIC_INTR_ISDN, }, 124 }; 125 int ioasic_ndevs = sizeof(ioasic_devs) / sizeof(ioasic_devs[0]); 126 127 struct ioasicintr { 128 int (*iai_func) __P((void *)); 129 void *iai_arg; 130 } ioasicintrs[IOASIC_NCOOKIES]; 131 132 tc_addr_t ioasic_base; /* XXX XXX XXX */ 133 134 /* There can be only one. */ 135 int ioasicfound; 136 137 int 138 ioasicmatch(parent, cfdata, aux) 139 struct device *parent; 140 struct cfdata *cfdata; 141 void *aux; 142 { 143 struct tc_attach_args *ta = aux; 144 145 /* Make sure that we're looking for this type of device. */ 146 if (strncmp("FLAMG-IO", ta->ta_modname, TC_ROM_LLEN)) 147 return (0); 148 149 /* Check that it can actually exist. */ 150 if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300)) 151 panic("ioasicmatch: how did we get here?"); 152 153 if (ioasicfound) 154 return (0); 155 156 return (1); 157 } 158 159 void 160 ioasicattach(parent, self, aux) 161 struct device *parent, *self; 162 void *aux; 163 { 164 struct ioasic_softc *sc = (struct ioasic_softc *)self; 165 struct tc_attach_args *ta = aux; 166 u_long i, ssr, imsk; 167 168 ioasicfound = 1; 169 170 sc->sc_bst = ta->ta_memt; 171 if (bus_space_map(ta->ta_memt, ta->ta_addr, 172 0x400000, 0, &sc->sc_bsh)) { 173 printf("%s: unable to map device\n", sc->sc_dv.dv_xname); 174 return; 175 } 176 sc->sc_dmat = ta->ta_dmat; 177 sc->sc_cookie = ta->ta_cookie; 178 179 ioasic_base = sc->sc_base = ta->ta_addr; /* XXX XXX XXX */ 180 181 #ifdef DEC_3000_300 182 if (cputype == ST_DEC_3000_300) { 183 ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); 184 ssr |= IOASIC_CSR_FASTMODE; 185 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); 186 printf(": slow mode\n"); 187 } else 188 #endif 189 printf(": fast mode\n"); 190 191 /* 192 * Turn off all device interrupt bits. 193 * (This does _not_ include 3000/300 TC option slot bits. 194 */ 195 imsk = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK); 196 for (i = 0; i < ioasic_ndevs; i++) 197 imsk &= ~ioasic_devs[i].iad_intrbits; 198 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK, imsk); 199 200 /* 201 * Set up interrupt handlers. 202 */ 203 for (i = 0; i < IOASIC_NCOOKIES; i++) { 204 ioasicintrs[i].iai_func = ioasic_intrnull; 205 ioasicintrs[i].iai_arg = (void *)i; 206 } 207 tc_intr_establish(parent, sc->sc_cookie, TC_IPL_NONE, ioasic_intr, sc); 208 209 /* 210 * Try to configure each device. 211 */ 212 ioasic_attach_devs(sc, ioasic_devs, ioasic_ndevs); 213 } 214 215 void 216 ioasic_intr_establish(ioa, cookie, level, func, arg) 217 struct device *ioa; 218 void *cookie, *arg; 219 tc_intrlevel_t level; 220 int (*func) __P((void *)); 221 { 222 struct ioasic_softc *sc = (void *)ioasic_cd.cd_devs[0]; 223 u_long dev, i, imsk; 224 225 dev = (u_long)cookie; 226 #ifdef DIAGNOSTIC 227 /* XXX check cookie. */ 228 #endif 229 230 if (ioasicintrs[dev].iai_func != ioasic_intrnull) 231 panic("ioasic_intr_establish: cookie %lu twice", dev); 232 233 ioasicintrs[dev].iai_func = func; 234 ioasicintrs[dev].iai_arg = arg; 235 236 /* Enable interrupts for the device. */ 237 for (i = 0; i < ioasic_ndevs; i++) 238 if (ioasic_devs[i].iad_cookie == cookie) 239 break; 240 if (i == ioasic_ndevs) 241 panic("ioasic_intr_establish: invalid cookie."); 242 243 imsk = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK); 244 imsk |= ioasic_devs[i].iad_intrbits; 245 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK, imsk); 246 } 247 248 void 249 ioasic_intr_disestablish(ioa, cookie) 250 struct device *ioa; 251 void *cookie; 252 { 253 struct ioasic_softc *sc = (void *)ioasic_cd.cd_devs[0]; 254 u_long dev, i, imsk; 255 256 dev = (u_long)cookie; 257 #ifdef DIAGNOSTIC 258 /* XXX check cookie. */ 259 #endif 260 261 if (ioasicintrs[dev].iai_func == ioasic_intrnull) 262 panic("ioasic_intr_disestablish: cookie %lu missing intr", dev); 263 264 /* Enable interrupts for the device. */ 265 for (i = 0; i < ioasic_ndevs; i++) 266 if (ioasic_devs[i].iad_cookie == cookie) 267 break; 268 if (i == ioasic_ndevs) 269 panic("ioasic_intr_disestablish: invalid cookie."); 270 271 imsk = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK); 272 imsk &= ~ioasic_devs[i].iad_intrbits; 273 bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK, imsk); 274 275 ioasicintrs[dev].iai_func = ioasic_intrnull; 276 ioasicintrs[dev].iai_arg = (void *)dev; 277 } 278 279 int 280 ioasic_intrnull(val) 281 void *val; 282 { 283 284 panic("ioasic_intrnull: uncaught IOASIC intr for cookie %ld\n", 285 (u_long)val); 286 } 287 288 /* 289 * ASIC interrupt handler. 290 */ 291 int 292 ioasic_intr(val) 293 void *val; 294 { 295 register struct ioasic_softc *sc = val; 296 register int ifound; 297 int gifound; 298 u_int32_t sir; 299 300 gifound = 0; 301 do { 302 ifound = 0; 303 tc_syncbus(); 304 305 sir = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_INTR); 306 307 #ifdef EVCNT_COUNTERS 308 /* No interrupt counting via evcnt counters */ 309 XXX BREAK HERE XXX 310 #else /* !EVCNT_COUNTERS */ 311 #define INCRINTRCNT(slot) intrcnt[INTRCNT_IOASIC + slot]++ 312 #endif /* EVCNT_COUNTERS */ 313 314 /* XXX DUPLICATION OF INTERRUPT BIT INFORMATION... */ 315 #define CHECKINTR(slot, bits) \ 316 if (sir & bits) { \ 317 ifound = 1; \ 318 INCRINTRCNT(slot); \ 319 (*ioasicintrs[slot].iai_func) \ 320 (ioasicintrs[slot].iai_arg); \ 321 } 322 CHECKINTR(IOASIC_DEV_SCC0, IOASIC_INTR_SCC_0); 323 CHECKINTR(IOASIC_DEV_SCC1, IOASIC_INTR_SCC_1); 324 CHECKINTR(IOASIC_DEV_LANCE, IOASIC_INTR_LANCE); 325 CHECKINTR(IOASIC_DEV_ISDN, IOASIC_INTR_ISDN); 326 327 gifound |= ifound; 328 } while (ifound); 329 330 return (gifound); 331 } 332
Indexes created Mon Sep 29 21:09:56 GMT 2025