1 /* $NetBSD: obio.c,v 1.31 1997/04/08 20:08:20 pk Exp $ */ 2 3 /* 4 * Copyright (c) 1993, 1994 Theo de Raadt 5 * Copyright (c) 1995 Paul Kranenburg 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Theo de Raadt. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/malloc.h> 38 39 #ifdef DEBUG 40 #include <sys/proc.h> 41 #include <sys/syslog.h> 42 #endif 43 44 #include <vm/vm.h> 45 46 #include <machine/autoconf.h> 47 #include <machine/pmap.h> 48 #include <machine/oldmon.h> 49 #include <machine/cpu.h> 50 #include <machine/ctlreg.h> 51 #include <sparc/sparc/asm.h> 52 #include <sparc/sparc/vaddrs.h> 53 #include <sparc/sparc/cpuvar.h> 54 #include <sparc/dev/sbusvar.h> 55 56 struct bus_softc { 57 union { 58 struct device scu_dev; /* base device */ 59 struct sbus_softc scu_sbus; /* obio is another sbus slot */ 60 } bu; 61 #define sc_dev bu.scu_dev 62 }; 63 64 /* autoconfiguration driver */ 65 static int busmatch __P((struct device *, struct cfdata *, void *)); 66 static void obioattach __P((struct device *, struct device *, void *)); 67 static void vmesattach __P((struct device *, struct device *, void *)); 68 static void vmelattach __P((struct device *, struct device *, void *)); 69 70 int busprint __P((void *, const char *)); 71 static int busattach __P((struct device *, struct cfdata *, void *, int)); 72 void * bus_map __P((struct rom_reg *, int, int)); 73 int obio_scan __P((struct device *, struct cfdata *, void *)); 74 int vmes_scan __P((struct device *, struct cfdata *, void *)); 75 int vmel_scan __P((struct device *, struct cfdata *, void *)); 76 int vmeintr __P((void *)); 77 78 struct cfattach obio_ca = { 79 sizeof(struct bus_softc), busmatch, obioattach 80 }; 81 82 struct cfdriver obio_cd = { 83 NULL, "obio", DV_DULL 84 }; 85 86 struct cfattach vmel_ca = { 87 sizeof(struct bus_softc), busmatch, vmelattach 88 }; 89 90 struct cfdriver vmel_cd = { 91 NULL, "vmel", DV_DULL 92 }; 93 94 struct cfattach vmes_ca = { 95 sizeof(struct bus_softc), busmatch, vmesattach 96 }; 97 98 struct cfdriver vmes_cd = { 99 NULL, "vmes", DV_DULL 100 }; 101 102 struct intrhand **vmeints; 103 104 105 int 106 busmatch(parent, cf, aux) 107 struct device *parent; 108 struct cfdata *cf; 109 void *aux; 110 { 111 register struct confargs *ca = aux; 112 register struct romaux *ra = &ca->ca_ra; 113 114 if (CPU_ISSUN4M) 115 return (strcmp(cf->cf_driver->cd_name, ra->ra_name) == 0); 116 117 if (!CPU_ISSUN4) 118 return (0); 119 120 return (strcmp(cf->cf_driver->cd_name, ra->ra_name) == 0); 121 } 122 123 int 124 busprint(args, obio) 125 void *args; 126 const char *obio; 127 { 128 register struct confargs *ca = args; 129 130 if (ca->ca_ra.ra_name == NULL) 131 ca->ca_ra.ra_name = "<unknown>"; 132 133 if (obio) 134 printf("[%s at %s]", ca->ca_ra.ra_name, obio); 135 136 printf(" addr %p", ca->ca_ra.ra_paddr); 137 138 if (CPU_ISSUN4 && ca->ca_ra.ra_intr[0].int_vec != -1) 139 printf(" vec 0x%x", ca->ca_ra.ra_intr[0].int_vec); 140 141 return (UNCONF); 142 } 143 144 145 void 146 obioattach(parent, self, args) 147 struct device *parent, *self; 148 void *args; 149 { 150 #if defined(SUN4M) 151 register struct bus_softc *sc = (struct bus_softc *)self; 152 struct confargs oca, *ca = args; 153 register struct romaux *ra = &ca->ca_ra; 154 register int node0, node; 155 register char *name; 156 register const char *sp; 157 const char *const *ssp; 158 int rlen; 159 extern int autoconf_nzs; 160 161 static const char *const special4m[] = { 162 /* find these first */ 163 "eeprom", 164 "counter", 165 #if 0 /* Not all sun4m's have an `auxio' */ 166 "auxio", 167 #endif 168 "", 169 /* place device to ignore here */ 170 "interrupt", 171 NULL 172 }; 173 #endif 174 175 if (CPU_ISSUN4) { 176 if (self->dv_unit > 0) { 177 printf(" unsupported\n"); 178 return; 179 } 180 printf("\n"); 181 182 (void)config_search(obio_scan, self, args); 183 bus_untmp(); 184 } 185 186 #if defined(SUN4M) 187 if (!CPU_ISSUN4M) 188 return; 189 190 /* 191 * There is only one obio bus (it is in fact one of the Sbus slots) 192 * How about VME? 193 */ 194 if (sc->sc_dev.dv_unit > 0) { 195 printf(" unsupported\n"); 196 return; 197 } 198 199 printf("\n"); 200 201 if (ra->ra_bp != NULL && strcmp(ra->ra_bp->name, "obio") == 0) 202 oca.ca_ra.ra_bp = ra->ra_bp + 1; 203 else 204 oca.ca_ra.ra_bp = NULL; 205 206 node = ra->ra_node; 207 rlen = getproplen(node, "ranges"); 208 if (rlen > 0) { 209 sc->bu.scu_sbus.sc_nrange = rlen / sizeof(struct rom_range); 210 sc->bu.scu_sbus.sc_range = 211 (struct rom_range *)malloc(rlen, M_DEVBUF, M_NOWAIT); 212 if (sc->bu.scu_sbus.sc_range == 0) 213 panic("obio: PROM ranges too large: %d", rlen); 214 (void)getprop(node, "ranges", sc->bu.scu_sbus.sc_range, rlen); 215 } 216 217 /* 218 * Loop through ROM children, fixing any relative addresses 219 * and then configuring each device. 220 * We first do the crucial ones, such as eeprom, etc. 221 */ 222 node0 = firstchild(ra->ra_node); 223 for (ssp = special4m ; *(sp = *ssp) != 0; ssp++) { 224 if ((node = findnode(node0, sp)) == 0) { 225 printf("could not find %s amongst obio devices\n", sp); 226 panic(sp); 227 } 228 if (!romprop(&oca.ca_ra, sp, node)) 229 continue; 230 231 sbus_translate(self, &oca); 232 oca.ca_bustype = BUS_OBIO; 233 (void) config_found(&sc->sc_dev, (void *)&oca, busprint); 234 } 235 236 for (node = node0; node; node = nextsibling(node)) { 237 name = getpropstring(node, "name"); 238 for (ssp = special4m ; (sp = *ssp) != NULL; ssp++) 239 if (strcmp(name, sp) == 0) 240 break; 241 242 if (sp != NULL || !romprop(&oca.ca_ra, name, node)) 243 continue; 244 245 if (strcmp(name, "zs") == 0) 246 /* XXX - see autoconf.c for this hack */ 247 autoconf_nzs++; 248 249 /* Translate into parent address spaces */ 250 sbus_translate(self, &oca); 251 oca.ca_bustype = BUS_OBIO; 252 (void) config_found(&sc->sc_dev, (void *)&oca, busprint); 253 } 254 #endif 255 } 256 257 void 258 vmesattach(parent, self, args) 259 struct device *parent, *self; 260 void *args; 261 { 262 if (CPU_ISSUN4M || self->dv_unit > 0) { 263 printf(" unsupported\n"); 264 return; 265 } 266 printf("\n"); 267 268 if (vmeints == NULL) { 269 vmeints = (struct intrhand **)malloc(256 * 270 sizeof(struct intrhand *), M_TEMP, M_NOWAIT); 271 bzero(vmeints, 256 * sizeof(struct intrhand *)); 272 } 273 (void)config_search(vmes_scan, self, args); 274 bus_untmp(); 275 } 276 277 void 278 vmelattach(parent, self, args) 279 struct device *parent, *self; 280 void *args; 281 { 282 if (CPU_ISSUN4M || self->dv_unit > 0) { 283 printf(" unsupported\n"); 284 return; 285 } 286 printf("\n"); 287 288 if (vmeints == NULL) { 289 vmeints = (struct intrhand **)malloc(256 * 290 sizeof(struct intrhand *), M_TEMP, M_NOWAIT); 291 bzero(vmeints, 256 * sizeof(struct intrhand *)); 292 } 293 (void)config_search(vmel_scan, self, args); 294 bus_untmp(); 295 } 296 297 int 298 busattach(parent, cf, args, bustype) 299 struct device *parent; 300 struct cfdata *cf; 301 void *args; 302 int bustype; 303 { 304 #if defined(SUN4) 305 register struct confargs *ca = args; 306 struct confargs oca; 307 caddr_t tmp; 308 309 if (bustype == BUS_OBIO && CPU_ISSUN4) { 310 311 /* 312 * avoid sun4m entries which don't have valid PA's. 313 * no point in even probing them. 314 */ 315 if (cf->cf_loc[0] == -1) return 0; 316 317 /* 318 * On the 4/100 obio addresses must be mapped at 319 * 0x0YYYYYYY, but alias higher up (we avoid the 320 * alias condition because it causes pmap difficulties) 321 * XXX: We also assume that 4/[23]00 obio addresses 322 * must be 0xZYYYYYYY, where (Z != 0) 323 */ 324 if (cpuinfo.cpu_type == CPUTYP_4_100 && 325 (cf->cf_loc[0] & 0xf0000000)) 326 return 0; 327 if (cpuinfo.cpu_type != CPUTYP_4_100 && 328 !(cf->cf_loc[0] & 0xf0000000)) 329 return 0; 330 } 331 332 oca.ca_ra.ra_iospace = -1; 333 oca.ca_ra.ra_paddr = (void *)cf->cf_loc[0]; 334 oca.ca_ra.ra_len = 0; 335 oca.ca_ra.ra_nreg = 1; 336 if (oca.ca_ra.ra_paddr) 337 tmp = (caddr_t)bus_tmp(oca.ca_ra.ra_paddr, 338 bustype); 339 else 340 tmp = NULL; 341 oca.ca_ra.ra_vaddr = tmp; 342 oca.ca_ra.ra_intr[0].int_pri = cf->cf_loc[1]; 343 if (bustype == BUS_VME16 || bustype == BUS_VME32) 344 oca.ca_ra.ra_intr[0].int_vec = cf->cf_loc[2]; 345 else 346 oca.ca_ra.ra_intr[0].int_vec = -1; 347 oca.ca_ra.ra_nintr = 1; 348 oca.ca_ra.ra_name = cf->cf_driver->cd_name; 349 if (ca->ca_ra.ra_bp != NULL && 350 ((bustype == BUS_VME16 && strcmp(ca->ca_ra.ra_bp->name,"vmes") ==0) || 351 (bustype == BUS_VME32 && strcmp(ca->ca_ra.ra_bp->name,"vmel") ==0) || 352 (bustype == BUS_OBIO && strcmp(ca->ca_ra.ra_bp->name,"obio") == 0))) 353 oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1; 354 else 355 oca.ca_ra.ra_bp = NULL; 356 oca.ca_bustype = bustype; 357 358 if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0) 359 return 0; 360 361 /* 362 * check if XXmatch routine replaced the temporary mapping with 363 * a real mapping. If not, then make sure we don't pass the 364 * tmp mapping to the attach routine. 365 */ 366 if (oca.ca_ra.ra_vaddr == tmp) 367 oca.ca_ra.ra_vaddr = NULL; /* wipe out tmp address */ 368 /* 369 * the match routine will set "ra_len" if it wants us to 370 * establish a mapping for it. 371 * (which won't be seen on future XXmatch calls, 372 * so not as useful as it seems.) 373 */ 374 if (oca.ca_ra.ra_len) 375 oca.ca_ra.ra_vaddr = 376 bus_map(oca.ca_ra.ra_reg, 377 oca.ca_ra.ra_len, oca.ca_bustype); 378 379 config_attach(parent, cf, &oca, busprint); 380 return 1; 381 #else 382 return 0; 383 #endif 384 } 385 386 int 387 obio_scan(parent, child, args) 388 struct device *parent; 389 struct cfdata *child; 390 void *args; 391 { 392 return busattach(parent, child, args, BUS_OBIO); 393 } 394 395 int 396 vmes_scan(parent, child, args) 397 struct device *parent; 398 struct cfdata *child; 399 void *args; 400 { 401 return busattach(parent, child, args, BUS_VME16); 402 } 403 404 int 405 vmel_scan(parent, child, args) 406 struct device *parent; 407 struct cfdata *child; 408 void *args; 409 { 410 return busattach(parent, child, args, BUS_VME32); 411 } 412 413 int pil_to_vme[] = { 414 -1, /* pil 0 */ 415 -1, /* pil 1 */ 416 1, /* pil 2 */ 417 2, /* pil 3 */ 418 -1, /* pil 4 */ 419 3, /* pil 5 */ 420 -1, /* pil 6 */ 421 4, /* pil 7 */ 422 -1, /* pil 8 */ 423 5, /* pil 9 */ 424 -1, /* pil 10 */ 425 6, /* pil 11 */ 426 -1, /* pil 12 */ 427 7, /* pil 13 */ 428 -1, /* pil 14 */ 429 -1, /* pil 15 */ 430 }; 431 432 int 433 vmeintr(arg) 434 void *arg; 435 { 436 int level = (int)arg, vec; 437 struct intrhand *ih; 438 int i = 0; 439 440 #ifdef DIAGNOSTIC 441 if (!CPU_ISSUN4) { 442 panic("vme: spurious interrupt"); 443 } 444 #endif 445 446 vec = ldcontrolb((caddr_t) 447 (AC_VMEINTVEC | (pil_to_vme[level] << 1) | 1)); 448 if (vec == -1) { 449 printf("vme: spurious interrupt\n"); 450 return 0; 451 } 452 453 for (ih = vmeints[vec]; ih; ih = ih->ih_next) 454 if (ih->ih_fun) 455 i += (ih->ih_fun)(ih->ih_arg); 456 return (i); 457 } 458 459 void 460 vmeintr_establish(vec, level, ih) 461 int vec, level; 462 struct intrhand *ih; 463 { 464 struct intrhand *ihs; 465 466 if (!CPU_ISSUN4) { 467 panic("vmeintr_establish: not supported on cpu-type %d", 468 cputyp); 469 } 470 471 if (vec == -1) 472 panic("vmeintr_establish: uninitialized vec\n"); 473 474 if (vmeints[vec] == NULL) 475 vmeints[vec] = ih; 476 else { 477 for (ihs = vmeints[vec]; ihs->ih_next; ihs = ihs->ih_next) 478 ; 479 ihs->ih_next = ih; 480 } 481 482 /* ensure the interrupt subsystem will call us at this level */ 483 for (ihs = intrhand[level]; ihs; ihs = ihs->ih_next) 484 if (ihs->ih_fun == vmeintr) 485 return; 486 487 ihs = (struct intrhand *)malloc(sizeof(struct intrhand), 488 M_TEMP, M_NOWAIT); 489 if (ihs == NULL) 490 panic("vme_addirq"); 491 bzero(ihs, sizeof *ihs); 492 ihs->ih_fun = vmeintr; 493 ihs->ih_arg = (void *)level; 494 intr_establish(level, ihs); 495 } 496 497 #define getpte(va) lda(va, ASI_PTE) 498 499 /* 500 * If we can find a mapping that was established by the rom, use it. 501 * Else, create a new mapping. 502 */ 503 void * 504 bus_map(pa, len, bustype) 505 struct rom_reg *pa; 506 int len; 507 int bustype; 508 { 509 u_long pf = (u_long)(pa->rr_paddr) >> PGSHIFT; 510 u_long va, pte; 511 int pgtype = -1; 512 513 switch (bt2pmt[bustype]) { 514 case PMAP_OBIO: 515 pgtype = PG_OBIO; 516 break; 517 case PMAP_VME32: 518 pgtype = PG_VME32; 519 break; 520 case PMAP_VME16: 521 pgtype = PG_VME16; 522 break; 523 } 524 525 if (len <= NBPG) { 526 for (va = OLDMON_STARTVADDR; va < OLDMON_ENDVADDR; va += NBPG) { 527 pte = getpte(va); 528 if ((pte & PG_V) != 0 && (pte & PG_TYPE) == pgtype && 529 (pte & PG_PFNUM) == pf) 530 return ((void *) 531 (va | ((u_long)pa->rr_paddr & PGOFSET)) ); 532 /* note: preserve page offset */ 533 } 534 } 535 return mapiodev(pa, 0, len, bustype); 536 } 537 538 void * 539 bus_tmp(pa, bustype) 540 void *pa; 541 int bustype; 542 { 543 vm_offset_t addr = (vm_offset_t)pa & ~PGOFSET; 544 int pmtype = bt2pmt[bustype]; 545 546 pmap_enter(pmap_kernel(), TMPMAP_VA, 547 addr | pmtype | PMAP_NC, 548 VM_PROT_READ | VM_PROT_WRITE, 1); 549 return ((void *)(TMPMAP_VA | ((u_long) pa & PGOFSET)) ); 550 } 551 552 void 553 bus_untmp() 554 { 555 pmap_remove(pmap_kernel(), TMPMAP_VA, TMPMAP_VA+NBPG); 556 } 557