frodo.c revision 1.14.2.1
1 /* $NetBSD: frodo.c,v 1.14.2.1 2004/08/03 10:34:23 skrll 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 1.14.2.1 2004/08/03 10:34:23 skrll 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/bus.h> 81 #include <machine/cpu.h> 82 #include <machine/intr.h> 83 #include <machine/hp300spu.h> 84 85 #include <hp300/dev/intiovar.h> 86 87 #include <hp300/dev/frodoreg.h> 88 #include <hp300/dev/frodovar.h> 89 90 /* 91 * Description of a Frodo interrupt handler. 92 */ 93 struct frodo_interhand { 94 int (*ih_fn) __P((void *)); 95 void *ih_arg; 96 int ih_priority; 97 }; 98 99 struct frodo_softc { 100 struct device sc_dev; /* generic device glue */ 101 volatile u_int8_t *sc_regs; /* register base */ 102 struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */ 103 int sc_ipl; 104 void *sc_ih; /* out interrupt cookie */ 105 int sc_refcnt; /* number of interrupt refs */ 106 struct bus_space_tag sc_tag; /* bus space tag */ 107 }; 108 109 int frodomatch __P((struct device *, struct cfdata *, void *)); 110 void frodoattach __P((struct device *, struct device *, void *)); 111 112 int frodoprint __P((void *, const char *)); 113 int frodosubmatch __P((struct device *, struct cfdata *, void *)); 114 115 int frodointr __P((void *)); 116 117 void frodo_imask __P((struct frodo_softc *, u_int16_t, u_int16_t)); 118 119 CFATTACH_DECL(frodo, sizeof(struct frodo_softc), 120 frodomatch, frodoattach, NULL, NULL); 121 122 struct frodo_device frodo_subdevs[] = { 123 { "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, 124 { "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, 125 { "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, 126 { "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, 127 { NULL, 0, 0 }, 128 }; 129 130 int 131 frodomatch(parent, match, aux) 132 struct device *parent; 133 struct cfdata *match; 134 void *aux; 135 { 136 struct intio_attach_args *ia = aux; 137 static int frodo_matched = 0; 138 139 /* only allow one instance */ 140 if (frodo_matched) 141 return (0); 142 143 if (strcmp(ia->ia_modname, "frodo") != 0) 144 return (0); 145 146 if (badaddr((caddr_t)ia->ia_addr)) 147 return (0); 148 149 frodo_matched = 1; 150 return (1); 151 } 152 153 void 154 frodoattach(parent, self, aux) 155 struct device *parent, *self; 156 void *aux; 157 { 158 struct frodo_softc *sc = (struct frodo_softc *)self; 159 struct intio_attach_args *ia = aux; 160 bus_space_tag_t bst = &sc->sc_tag; 161 struct frodo_device *fd; 162 struct frodo_attach_args fa; 163 164 sc->sc_regs = (volatile u_int8_t *)ia->ia_addr; 165 sc->sc_ipl = ia->ia_ipl; 166 167 if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0) 168 printf(": service mode enabled"); 169 printf("\n"); 170 171 /* Initialize bus_space_tag_t for frodo */ 172 frodo_init_bus_space(bst); 173 174 /* Clear all of the interrupt handlers. */ 175 memset(sc->sc_intr, 0, sizeof(sc->sc_intr)); 176 sc->sc_refcnt = 0; 177 178 /* 179 * Disable all of the interrupt lines; we reenable them 180 * as subdevices attach. 181 */ 182 frodo_imask(sc, 0, 0xffff); 183 184 /* Clear any pending interrupts. */ 185 FRODO_WRITE(sc, FRODO_PIC_PU, 0xff); 186 FRODO_WRITE(sc, FRODO_PIC_PL, 0xff); 187 188 /* Set interrupt polarities. */ 189 FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10); 190 191 /* ...and configure for edge triggering. */ 192 FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf); 193 194 /* 195 * We defer hooking up our interrupt handler until 196 * a subdevice hooks up theirs. 197 */ 198 sc->sc_ih = NULL; 199 200 /* ... and attach subdevices. */ 201 for (fd = frodo_subdevs; fd->fd_name != NULL; fd++) { 202 /* 203 * Skip the first serial port if we're not a 425e; 204 * it's mapped to the DCA at select code 9 on all 205 * other models. 206 */ 207 if (fd->fd_offset == FRODO_APCI_OFFSET(1) && 208 mmuid != MMUID_425_E) 209 continue; 210 fa.fa_name = fd->fd_name; 211 fa.fa_bst = bst; 212 fa.fa_base = FRODO_BASE; 213 fa.fa_offset = fd->fd_offset; 214 fa.fa_line = fd->fd_line; 215 config_found_sm(self, &fa, frodoprint, frodosubmatch); 216 } 217 } 218 219 int 220 frodosubmatch(parent, cf, aux) 221 struct device *parent; 222 struct cfdata *cf; 223 void *aux; 224 { 225 struct frodo_attach_args *fa = aux; 226 227 if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && 228 cf->frodocf_offset != fa->fa_offset) 229 return (0); 230 231 return (config_match(parent, cf, aux)); 232 } 233 234 int 235 frodoprint(aux, pnp) 236 void *aux; 237 const char *pnp; 238 { 239 struct frodo_attach_args *fa = aux; 240 241 if (pnp) 242 aprint_normal("%s at %s", fa->fa_name, pnp); 243 aprint_normal(" offset 0x%x", fa->fa_offset); 244 return (UNCONF); 245 } 246 247 void 248 frodo_intr_establish(frdev, func, arg, line, priority) 249 struct device *frdev; 250 int (*func) __P((void *)); 251 void *arg; 252 int line; 253 int priority; 254 { 255 struct frodo_softc *sc = (struct frodo_softc *)frdev; 256 struct hp300_intrhand *ih = sc->sc_ih; 257 258 if (line < 0 || line >= FRODO_NINTR) { 259 printf("%s: bad interrupt line %d\n", 260 sc->sc_dev.dv_xname, line); 261 goto lose; 262 } 263 if (sc->sc_intr[line].ih_fn != NULL) { 264 printf("%s: interrupt line %d already used\n", 265 sc->sc_dev.dv_xname, line); 266 goto lose; 267 } 268 269 /* Install the handler. */ 270 sc->sc_intr[line].ih_fn = func; 271 sc->sc_intr[line].ih_arg = arg; 272 sc->sc_intr[line].ih_priority = priority; 273 274 /* 275 * If this is the first one, establish the frodo 276 * interrupt handler. If not, reestablish at a 277 * higher priority if necessary. 278 */ 279 if (ih == NULL || ih->ih_priority < priority) { 280 if (ih != NULL) 281 intr_disestablish(ih); 282 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority); 283 } 284 285 sc->sc_refcnt++; 286 287 /* Enable the interrupt line. */ 288 frodo_imask(sc, (1 << line), 0); 289 return; 290 lose: 291 panic("frodo_intr_establish"); 292 } 293 294 void 295 frodo_intr_disestablish(frdev, line) 296 struct device *frdev; 297 int line; 298 { 299 struct frodo_softc *sc = (struct frodo_softc *)frdev; 300 struct hp300_intrhand *ih = sc->sc_ih; 301 int newpri; 302 303 if (sc->sc_intr[line].ih_fn == NULL) { 304 printf("%s: no handler for line %d\n", 305 sc->sc_dev.dv_xname, line); 306 panic("frodo_intr_disestablish"); 307 } 308 309 sc->sc_intr[line].ih_fn = NULL; 310 frodo_imask(sc, 0, (1 << line)); 311 312 /* If this was the last, unhook ourselves. */ 313 if (sc->sc_refcnt-- == 1) { 314 intr_disestablish(ih); 315 return; 316 } 317 318 /* Lower our priority, if appropriate. */ 319 for (newpri = 0, line = 0; line < FRODO_NINTR; line++) 320 if (sc->sc_intr[line].ih_fn != NULL && 321 sc->sc_intr[line].ih_priority > newpri) 322 newpri = sc->sc_intr[line].ih_priority; 323 324 if (newpri != ih->ih_priority) { 325 intr_disestablish(ih); 326 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); 327 } 328 } 329 330 int 331 frodointr(arg) 332 void *arg; 333 { 334 struct frodo_softc *sc = arg; 335 struct frodo_interhand *fih; 336 int line, taken = 0; 337 338 /* Any interrupts pending? */ 339 if (FRODO_GETPEND(sc) == 0) 340 return (0); 341 342 do { 343 /* 344 * Get pending interrupt; this also clears it for us. 345 */ 346 line = FRODO_IPEND(sc); 347 fih = &sc->sc_intr[line]; 348 if (fih->ih_fn == NULL || 349 (*fih->ih_fn)(fih->ih_arg) == 0) 350 printf("%s: spurious interrupt on line %d\n", 351 sc->sc_dev.dv_xname, line); 352 if (taken++ > 100) 353 panic("frodointr: looping!"); 354 } while (FRODO_GETPEND(sc) != 0); 355 356 return (1); 357 } 358 359 void 360 frodo_imask(sc, set, clear) 361 struct frodo_softc *sc; 362 u_int16_t set, clear; 363 { 364 u_int16_t imask; 365 366 imask = FRODO_GETMASK(sc); 367 368 imask |= set; 369 imask &= ~clear; 370 371 FRODO_SETMASK(sc, imask); 372 } 373 374 /* 375 * frodo chip specific bus_space(9) support functions. 376 */ 377 static u_int8_t frodo_bus_space_read_sparse_1 __P((bus_space_tag_t, 378 bus_space_handle_t, bus_size_t)); 379 static void frodo_bus_space_write_sparse_1 __P((bus_space_tag_t, 380 bus_space_handle_t, bus_size_t, u_int8_t)); 381 382 static void frodo_bus_space_read_multi_sparse_1 __P((bus_space_tag_t, 383 bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t)); 384 static void frodo_bus_space_write_multi_sparse_1 __P((bus_space_tag_t, 385 bus_space_handle_t, bus_size_t, const u_int8_t *, bus_size_t)); 386 387 static void frodo_bus_space_read_region_sparse_1 __P((bus_space_tag_t, 388 bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t)); 389 static void frodo_bus_space_write_region_sparse_1 __P((bus_space_tag_t, 390 bus_space_handle_t, bus_size_t, const u_int8_t *, bus_size_t)); 391 392 static void frodo_bus_space_set_multi_sparse_1 __P((bus_space_tag_t, 393 bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t)); 394 395 static void frodo_bus_space_set_region_sparse_1 __P((bus_space_tag_t, 396 bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t)); 397 398 /* 399 * frodo_init_bus_space(): 400 * Initialize bus_space functions in bus_space_tag_t 401 * for frodo devices which have sparse address space. 402 */ 403 void 404 frodo_init_bus_space(bst) 405 bus_space_tag_t bst; 406 { 407 408 memset(bst, 0, sizeof(struct bus_space_tag)); 409 bst->bustype = HP300_BUS_SPACE_INTIO; 410 411 bst->bsr1 = frodo_bus_space_read_sparse_1; 412 bst->bsw1 = frodo_bus_space_write_sparse_1; 413 414 bst->bsrm1 = frodo_bus_space_read_multi_sparse_1; 415 bst->bswm1 = frodo_bus_space_write_multi_sparse_1; 416 417 bst->bsrr1 = frodo_bus_space_read_region_sparse_1; 418 bst->bswr1 = frodo_bus_space_write_region_sparse_1; 419 420 bst->bssm1 = frodo_bus_space_set_multi_sparse_1; 421 422 bst->bssr1 = frodo_bus_space_set_region_sparse_1; 423 } 424 425 static u_int8_t 426 frodo_bus_space_read_sparse_1(bst, bsh, offset) 427 bus_space_tag_t bst; 428 bus_space_handle_t bsh; 429 bus_size_t offset; 430 { 431 432 return *(volatile u_int8_t *)(bsh + (offset << 2)); 433 } 434 435 static void frodo_bus_space_write_sparse_1(bst, bsh, offset, val) 436 bus_space_tag_t bst; 437 bus_space_handle_t bsh; 438 bus_size_t offset; 439 u_int8_t val; 440 { 441 442 *(volatile u_int8_t *)(bsh + (offset << 2)) = val; 443 } 444 445 static void 446 frodo_bus_space_read_multi_sparse_1(bst, bsh, offset, addr, len) 447 bus_space_tag_t bst; 448 bus_space_handle_t bsh; 449 bus_size_t offset; 450 u_int8_t *addr; 451 bus_size_t len; 452 { 453 454 __asm __volatile ( 455 " movl %0,%%a0 ;\n" 456 " movl %1,%%a1 ;\n" 457 " movl %2,%%d0 ;\n" 458 "1: movb %%a0@,%%a1@+ ;\n" 459 " subql #1,%%d0 ;\n" 460 " jne 1b" 461 : 462 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 463 : "%a0","%a1","%d0"); 464 } 465 466 static void 467 frodo_bus_space_write_multi_sparse_1(bst, bsh, offset, addr, len) 468 bus_space_tag_t bst; 469 bus_space_handle_t bsh; 470 bus_size_t offset; 471 const u_int8_t *addr; 472 bus_size_t len; 473 { 474 475 __asm __volatile ( 476 " movl %0,%%a0 ;\n" 477 " movl %1,%%a1 ;\n" 478 " movl %2,%%d0 ;\n" 479 "1: movb %%a1@+,%%a0@ ;\n" 480 " subql #1,%%d0 ;\n" 481 " jne 1b" 482 : 483 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 484 : "%a0","%a1","%d0"); 485 } 486 487 static void 488 frodo_bus_space_read_region_sparse_1(bst, bsh, offset, addr, len) 489 bus_space_tag_t bst; 490 bus_space_handle_t bsh; 491 bus_size_t offset; 492 u_int8_t *addr; 493 bus_size_t len; 494 { 495 __asm __volatile ( 496 " movl %0,%%a0 ;\n" 497 " movl %1,%%a1 ;\n" 498 " movl %2,%%d0 ;\n" 499 "1: movb %%a0@,%%a1@+ ;\n" 500 " addql #4,%%a0 ;\n" 501 " subql #1,%%d0 ;\n" 502 " jne 1b" 503 : 504 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 505 : "%a0","%a1","%d0"); 506 } 507 508 static void 509 frodo_bus_space_write_region_sparse_1(bst, bsh, offset, addr, len) 510 bus_space_tag_t bst; 511 bus_space_handle_t bsh; 512 bus_size_t offset; 513 const u_int8_t *addr; 514 bus_size_t len; 515 { 516 517 __asm __volatile ( 518 " movl %0,%%a0 ;\n" 519 " movl %1,%%a1 ;\n" 520 " movl %2,%%d0 ;\n" 521 "1: movb %%a1@+,%%a0@ ;\n" 522 " addql #4,%%a0 ;\n" 523 " subql #1,%%d0 ;\n" 524 " jne 1b" 525 : 526 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 527 : "%a0","%a1","%d0"); 528 } 529 530 static void 531 frodo_bus_space_set_multi_sparse_1(bst, bsh, offset, val, count) 532 bus_space_tag_t bst; 533 bus_space_handle_t bsh; 534 bus_size_t offset; 535 u_int8_t val; 536 bus_size_t count; 537 { 538 __asm __volatile ( 539 " movl %0,%%a0 ;\n" 540 " movl %1,%%d1 ;\n" 541 " movl %2,%%d0 ;\n" 542 "1: movb %%d1,%%a0@ ;\n" 543 " subql #1,%%d0 ;\n" 544 " jne 1b" 545 : 546 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 547 : "%a0","%d0","%d1"); 548 } 549 550 static void 551 frodo_bus_space_set_region_sparse_1(bst, bsh, offset, val, count) 552 bus_space_tag_t bst; 553 bus_space_handle_t bsh; 554 bus_size_t offset; 555 u_int8_t val; 556 bus_size_t count; 557 { 558 559 __asm __volatile ( 560 " movl %0,%%a0 ;\n" 561 " movl %1,%%d1 ;\n" 562 " movl %2,%%d0 ;\n" 563 "1: movb %%d1,%%a0@ ;\n" 564 " addql #4,%%a0 ;\n" 565 " subql #1,%%d0 ;\n" 566 " jne 1b" 567 : 568 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 569 : "%a0","%d0","%d1"); 570 } 571
Indexes created Fri Oct 03 02:09:57 GMT 2025