frodo.c revision 1.14
1 /* $NetBSD: frodo.c,v 1.14 2003/01/01 01:34:45 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998, 1999 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. 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) 1997 Michael Smith. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 /* 65 * Support for the "Frodo" (a.k.a. "Apollo Utility") chip found 66 * in HP Apollo 9000/4xx workstations. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.14 2003/01/01 01:34:45 thorpej Exp $"); 71 72 #define _HP300_INTR_H_PRIVATE 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/syslog.h> 78 #include <sys/device.h> 79 80 #include <machine/cpu.h> 81 #include <machine/intr.h> 82 #include <machine/hp300spu.h> 83 84 #include <hp300/dev/intiovar.h> 85 86 #include <hp300/dev/frodoreg.h> 87 #include <hp300/dev/frodovar.h> 88 89 /* 90 * Description of a Frodo interrupt handler. 91 */ 92 struct frodo_interhand { 93 int (*ih_fn) __P((void *)); 94 void *ih_arg; 95 int ih_priority; 96 }; 97 98 struct frodo_softc { 99 struct device sc_dev; /* generic device glue */ 100 volatile u_int8_t *sc_regs; /* register base */ 101 struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */ 102 int sc_ipl; 103 void *sc_ih; /* out interrupt cookie */ 104 int sc_refcnt; /* number of interrupt refs */ 105 }; 106 107 int frodomatch __P((struct device *, struct cfdata *, void *)); 108 void frodoattach __P((struct device *, struct device *, void *)); 109 110 int frodoprint __P((void *, const char *)); 111 int frodosubmatch __P((struct device *, struct cfdata *, void *)); 112 113 int frodointr __P((void *)); 114 115 void frodo_imask __P((struct frodo_softc *, u_int16_t, u_int16_t)); 116 117 CFATTACH_DECL(frodo, sizeof(struct frodo_softc), 118 frodomatch, frodoattach, NULL, NULL); 119 120 struct frodo_attach_args frodo_subdevs[] = { 121 { "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, 122 { "apci", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, 123 { "apci", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, 124 { "apci", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, 125 { NULL, 0, 0 }, 126 }; 127 128 int 129 frodomatch(parent, match, aux) 130 struct device *parent; 131 struct cfdata *match; 132 void *aux; 133 { 134 struct intio_attach_args *ia = aux; 135 static int frodo_matched = 0; 136 137 /* only allow one instance */ 138 if (frodo_matched) 139 return (0); 140 141 if (strcmp(ia->ia_modname, "frodo") != 0) 142 return (0); 143 144 if (badaddr((caddr_t)ia->ia_addr)) 145 return (0); 146 147 frodo_matched = 1; 148 return (1); 149 } 150 151 void 152 frodoattach(parent, self, aux) 153 struct device *parent, *self; 154 void *aux; 155 { 156 struct frodo_softc *sc = (struct frodo_softc *)self; 157 struct intio_attach_args *ia = aux; 158 int i; 159 160 sc->sc_regs = (volatile u_int8_t *)ia->ia_addr; 161 sc->sc_ipl = ia->ia_ipl; 162 163 if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0) 164 printf(": service mode enabled"); 165 printf("\n"); 166 167 /* Clear all of the interrupt handlers. */ 168 memset(sc->sc_intr, 0, sizeof(sc->sc_intr)); 169 sc->sc_refcnt = 0; 170 171 /* 172 * Disable all of the interrupt lines; we reenable them 173 * as subdevices attach. 174 */ 175 frodo_imask(sc, 0, 0xffff); 176 177 /* Clear any pending interrupts. */ 178 FRODO_WRITE(sc, FRODO_PIC_PU, 0xff); 179 FRODO_WRITE(sc, FRODO_PIC_PL, 0xff); 180 181 /* Set interrupt polarities. */ 182 FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10); 183 184 /* ...and configure for edge triggering. */ 185 FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf); 186 187 /* 188 * We defer hooking up our interrupt handler until 189 * a subdevice hooks up theirs. 190 */ 191 sc->sc_ih = NULL; 192 193 /* ... and attach subdevices. */ 194 for (i = 0; frodo_subdevs[i].fa_name != NULL; i++) { 195 /* 196 * Skip the first serial port if we're not a 425e; 197 * it's mapped to the DCA at select code 9 on all 198 * other models. 199 */ 200 if (frodo_subdevs[i].fa_offset == FRODO_APCI_OFFSET(1) && 201 mmuid != MMUID_425_E) 202 continue; 203 config_found_sm(self, &frodo_subdevs[i], 204 frodoprint, frodosubmatch); 205 } 206 } 207 208 int 209 frodosubmatch(parent, cf, aux) 210 struct device *parent; 211 struct cfdata *cf; 212 void *aux; 213 { 214 struct frodo_attach_args *fa = aux; 215 216 if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && 217 cf->frodocf_offset != fa->fa_offset) 218 return (0); 219 220 return (config_match(parent, cf, aux)); 221 } 222 223 int 224 frodoprint(aux, pnp) 225 void *aux; 226 const char *pnp; 227 { 228 struct frodo_attach_args *fa = aux; 229 230 if (pnp) 231 aprint_normal("%s at %s", fa->fa_name, pnp); 232 aprint_normal(" offset 0x%x", fa->fa_offset); 233 return (UNCONF); 234 } 235 236 void 237 frodo_intr_establish(frdev, func, arg, line, priority) 238 struct device *frdev; 239 int (*func) __P((void *)); 240 void *arg; 241 int line; 242 int priority; 243 { 244 struct frodo_softc *sc = (struct frodo_softc *)frdev; 245 struct hp300_intrhand *ih = sc->sc_ih; 246 247 if (line < 0 || line >= FRODO_NINTR) { 248 printf("%s: bad interrupt line %d\n", 249 sc->sc_dev.dv_xname, line); 250 goto lose; 251 } 252 if (sc->sc_intr[line].ih_fn != NULL) { 253 printf("%s: interrupt line %d already used\n", 254 sc->sc_dev.dv_xname, line); 255 goto lose; 256 } 257 258 /* Install the handler. */ 259 sc->sc_intr[line].ih_fn = func; 260 sc->sc_intr[line].ih_arg = arg; 261 sc->sc_intr[line].ih_priority = priority; 262 263 /* 264 * If this is the first one, establish the frodo 265 * interrupt handler. If not, reestablish at a 266 * higher priority if necessary. 267 */ 268 if (ih == NULL || ih->ih_priority < priority) { 269 if (ih != NULL) 270 intr_disestablish(ih); 271 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority); 272 } 273 274 sc->sc_refcnt++; 275 276 /* Enable the interrupt line. */ 277 frodo_imask(sc, (1 << line), 0); 278 return; 279 lose: 280 panic("frodo_intr_establish"); 281 } 282 283 void 284 frodo_intr_disestablish(frdev, line) 285 struct device *frdev; 286 int line; 287 { 288 struct frodo_softc *sc = (struct frodo_softc *)frdev; 289 struct hp300_intrhand *ih = sc->sc_ih; 290 int newpri; 291 292 if (sc->sc_intr[line].ih_fn == NULL) { 293 printf("%s: no handler for line %d\n", 294 sc->sc_dev.dv_xname, line); 295 panic("frodo_intr_disestablish"); 296 } 297 298 sc->sc_intr[line].ih_fn = NULL; 299 frodo_imask(sc, 0, (1 << line)); 300 301 /* If this was the last, unhook ourselves. */ 302 if (sc->sc_refcnt-- == 1) { 303 intr_disestablish(ih); 304 return; 305 } 306 307 /* Lower our priority, if appropriate. */ 308 for (newpri = 0, line = 0; line < FRODO_NINTR; line++) 309 if (sc->sc_intr[line].ih_fn != NULL && 310 sc->sc_intr[line].ih_priority > newpri) 311 newpri = sc->sc_intr[line].ih_priority; 312 313 if (newpri != ih->ih_priority) { 314 intr_disestablish(ih); 315 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); 316 } 317 } 318 319 int 320 frodointr(arg) 321 void *arg; 322 { 323 struct frodo_softc *sc = arg; 324 struct frodo_interhand *fih; 325 int line, taken = 0; 326 327 /* Any interrupts pending? */ 328 if (FRODO_GETPEND(sc) == 0) 329 return (0); 330 331 do { 332 /* 333 * Get pending interrupt; this also clears it for us. 334 */ 335 line = FRODO_IPEND(sc); 336 fih = &sc->sc_intr[line]; 337 if (fih->ih_fn == NULL || 338 (*fih->ih_fn)(fih->ih_arg) == 0) 339 printf("%s: spurious interrupt on line %d\n", 340 sc->sc_dev.dv_xname, line); 341 if (taken++ > 100) 342 panic("frodointr: looping!"); 343 } while (FRODO_GETPEND(sc) != 0); 344 345 return (1); 346 } 347 348 void 349 frodo_imask(sc, set, clear) 350 struct frodo_softc *sc; 351 u_int16_t set, clear; 352 { 353 u_int16_t imask; 354 355 imask = FRODO_GETMASK(sc); 356 357 imask |= set; 358 imask &= ~clear; 359 360 FRODO_SETMASK(sc, imask); 361 } 362
Indexes created Fri Oct 03 02:09:57 GMT 2025