frodo.c revision 1.14.2.2
1 /* $NetBSD: frodo.c,v 1.14.2.2 2004/09/03 12:44:30 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 1.14.2.2 2004/09/03 12:44:30 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)(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 static int frodomatch(struct device *, struct cfdata *, void *); 110 static void frodoattach(struct device *, struct device *, void *); 111 112 static int frodoprint(void *, const char *); 113 static int frodosubmatch(struct device *, struct cfdata *, void *); 114 115 static int frodointr(void *); 116 117 static void frodo_imask(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 static const 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 static int 131 frodomatch(struct device *parent, struct cfdata *match, void *aux) 132 { 133 struct intio_attach_args *ia = aux; 134 static int frodo_matched = 0; 135 136 /* only allow one instance */ 137 if (frodo_matched) 138 return (0); 139 140 if (strcmp(ia->ia_modname, "frodo") != 0) 141 return (0); 142 143 if (badaddr((caddr_t)ia->ia_addr)) 144 return (0); 145 146 frodo_matched = 1; 147 return (1); 148 } 149 150 static void 151 frodoattach(struct device *parent, struct device *self, void *aux) 152 { 153 struct frodo_softc *sc = (struct frodo_softc *)self; 154 struct intio_attach_args *ia = aux; 155 bus_space_tag_t bst = &sc->sc_tag; 156 const struct frodo_device *fd; 157 struct frodo_attach_args fa; 158 159 sc->sc_regs = (volatile u_int8_t *)ia->ia_addr; 160 sc->sc_ipl = ia->ia_ipl; 161 162 if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0) 163 printf(": service mode enabled"); 164 printf("\n"); 165 166 /* Initialize bus_space_tag_t for frodo */ 167 frodo_init_bus_space(bst); 168 169 /* Clear all of the interrupt handlers. */ 170 memset(sc->sc_intr, 0, sizeof(sc->sc_intr)); 171 sc->sc_refcnt = 0; 172 173 /* 174 * Disable all of the interrupt lines; we reenable them 175 * as subdevices attach. 176 */ 177 frodo_imask(sc, 0, 0xffff); 178 179 /* Clear any pending interrupts. */ 180 FRODO_WRITE(sc, FRODO_PIC_PU, 0xff); 181 FRODO_WRITE(sc, FRODO_PIC_PL, 0xff); 182 183 /* Set interrupt polarities. */ 184 FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10); 185 186 /* ...and configure for edge triggering. */ 187 FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf); 188 189 /* 190 * We defer hooking up our interrupt handler until 191 * a subdevice hooks up theirs. 192 */ 193 sc->sc_ih = NULL; 194 195 /* ... and attach subdevices. */ 196 for (fd = frodo_subdevs; fd->fd_name != NULL; fd++) { 197 /* 198 * Skip the first serial port if we're not a 425e; 199 * it's mapped to the DCA at select code 9 on all 200 * other models. 201 */ 202 if (fd->fd_offset == FRODO_APCI_OFFSET(1) && 203 mmuid != MMUID_425_E) 204 continue; 205 fa.fa_name = fd->fd_name; 206 fa.fa_bst = bst; 207 fa.fa_base = FRODO_BASE; 208 fa.fa_offset = fd->fd_offset; 209 fa.fa_line = fd->fd_line; 210 config_found_sm(self, &fa, frodoprint, frodosubmatch); 211 } 212 } 213 214 static int 215 frodosubmatch(struct device *parent, struct cfdata *cf, void *aux) 216 { 217 struct frodo_attach_args *fa = aux; 218 219 if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && 220 cf->frodocf_offset != fa->fa_offset) 221 return (0); 222 223 return (config_match(parent, cf, aux)); 224 } 225 226 static int 227 frodoprint(void *aux, const char *pnp) 228 { 229 struct frodo_attach_args *fa = aux; 230 231 if (pnp) 232 aprint_normal("%s at %s", fa->fa_name, pnp); 233 aprint_normal(" offset 0x%x", fa->fa_offset); 234 return (UNCONF); 235 } 236 237 void 238 frodo_intr_establish(struct device *frdev, int (*func)(void *), void *arg, 239 int line, int priority) 240 { 241 struct frodo_softc *sc = (struct frodo_softc *)frdev; 242 struct hp300_intrhand *ih = sc->sc_ih; 243 244 if (line < 0 || line >= FRODO_NINTR) { 245 printf("%s: bad interrupt line %d\n", 246 sc->sc_dev.dv_xname, line); 247 goto lose; 248 } 249 if (sc->sc_intr[line].ih_fn != NULL) { 250 printf("%s: interrupt line %d already used\n", 251 sc->sc_dev.dv_xname, line); 252 goto lose; 253 } 254 255 /* Install the handler. */ 256 sc->sc_intr[line].ih_fn = func; 257 sc->sc_intr[line].ih_arg = arg; 258 sc->sc_intr[line].ih_priority = priority; 259 260 /* 261 * If this is the first one, establish the frodo 262 * interrupt handler. If not, reestablish at a 263 * higher priority if necessary. 264 */ 265 if (ih == NULL || ih->ih_priority < priority) { 266 if (ih != NULL) 267 intr_disestablish(ih); 268 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority); 269 } 270 271 sc->sc_refcnt++; 272 273 /* Enable the interrupt line. */ 274 frodo_imask(sc, (1 << line), 0); 275 return; 276 lose: 277 panic("frodo_intr_establish"); 278 } 279 280 void 281 frodo_intr_disestablish(struct device *frdev, int line) 282 { 283 struct frodo_softc *sc = (struct frodo_softc *)frdev; 284 struct hp300_intrhand *ih = sc->sc_ih; 285 int newpri; 286 287 if (sc->sc_intr[line].ih_fn == NULL) { 288 printf("%s: no handler for line %d\n", 289 sc->sc_dev.dv_xname, line); 290 panic("frodo_intr_disestablish"); 291 } 292 293 sc->sc_intr[line].ih_fn = NULL; 294 frodo_imask(sc, 0, (1 << line)); 295 296 /* If this was the last, unhook ourselves. */ 297 if (sc->sc_refcnt-- == 1) { 298 intr_disestablish(ih); 299 return; 300 } 301 302 /* Lower our priority, if appropriate. */ 303 for (newpri = 0, line = 0; line < FRODO_NINTR; line++) 304 if (sc->sc_intr[line].ih_fn != NULL && 305 sc->sc_intr[line].ih_priority > newpri) 306 newpri = sc->sc_intr[line].ih_priority; 307 308 if (newpri != ih->ih_priority) { 309 intr_disestablish(ih); 310 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); 311 } 312 } 313 314 static int 315 frodointr(void *arg) 316 { 317 struct frodo_softc *sc = arg; 318 struct frodo_interhand *fih; 319 int line, taken = 0; 320 321 /* Any interrupts pending? */ 322 if (FRODO_GETPEND(sc) == 0) 323 return (0); 324 325 do { 326 /* 327 * Get pending interrupt; this also clears it for us. 328 */ 329 line = FRODO_IPEND(sc); 330 fih = &sc->sc_intr[line]; 331 if (fih->ih_fn == NULL || 332 (*fih->ih_fn)(fih->ih_arg) == 0) 333 printf("%s: spurious interrupt on line %d\n", 334 sc->sc_dev.dv_xname, line); 335 if (taken++ > 100) 336 panic("frodointr: looping!"); 337 } while (FRODO_GETPEND(sc) != 0); 338 339 return (1); 340 } 341 342 static void 343 frodo_imask(struct frodo_softc *sc, u_int16_t set, u_int16_t clear) 344 { 345 u_int16_t imask; 346 347 imask = FRODO_GETMASK(sc); 348 349 imask |= set; 350 imask &= ~clear; 351 352 FRODO_SETMASK(sc, imask); 353 } 354 355 /* 356 * frodo chip specific bus_space(9) support functions. 357 */ 358 static u_int8_t frodo_bus_space_read_sparse_1(bus_space_tag_t, 359 bus_space_handle_t, bus_size_t); 360 static void frodo_bus_space_write_sparse_1(bus_space_tag_t, 361 bus_space_handle_t, bus_size_t, u_int8_t); 362 363 static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t, 364 bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t); 365 static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t, 366 bus_space_handle_t, bus_size_t, const u_int8_t *, bus_size_t); 367 368 static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t, 369 bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t); 370 static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t, 371 bus_space_handle_t, bus_size_t, const u_int8_t *, bus_size_t); 372 373 static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t, 374 bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t); 375 376 static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t, 377 bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t); 378 379 /* 380 * frodo_init_bus_space(): 381 * Initialize bus_space functions in bus_space_tag_t 382 * for frodo devices which have sparse address space. 383 */ 384 void 385 frodo_init_bus_space(bus_space_tag_t bst) 386 { 387 388 memset(bst, 0, sizeof(struct bus_space_tag)); 389 bst->bustype = HP300_BUS_SPACE_INTIO; 390 391 bst->bsr1 = frodo_bus_space_read_sparse_1; 392 bst->bsw1 = frodo_bus_space_write_sparse_1; 393 394 bst->bsrm1 = frodo_bus_space_read_multi_sparse_1; 395 bst->bswm1 = frodo_bus_space_write_multi_sparse_1; 396 397 bst->bsrr1 = frodo_bus_space_read_region_sparse_1; 398 bst->bswr1 = frodo_bus_space_write_region_sparse_1; 399 400 bst->bssm1 = frodo_bus_space_set_multi_sparse_1; 401 402 bst->bssr1 = frodo_bus_space_set_region_sparse_1; 403 } 404 405 static u_int8_t 406 frodo_bus_space_read_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 407 bus_size_t offset) 408 { 409 410 return *(volatile u_int8_t *)(bsh + (offset << 2)); 411 } 412 413 static void 414 frodo_bus_space_write_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 415 bus_size_t offset, u_int8_t val) 416 { 417 418 *(volatile u_int8_t *)(bsh + (offset << 2)) = val; 419 } 420 421 static void 422 frodo_bus_space_read_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 423 bus_size_t offset, u_int8_t *addr, bus_size_t len) 424 { 425 426 __asm __volatile ( 427 " movl %0,%%a0 ;\n" 428 " movl %1,%%a1 ;\n" 429 " movl %2,%%d0 ;\n" 430 "1: movb %%a0@,%%a1@+ ;\n" 431 " subql #1,%%d0 ;\n" 432 " jne 1b" 433 : 434 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 435 : "%a0","%a1","%d0"); 436 } 437 438 static void 439 frodo_bus_space_write_multi_sparse_1(bus_space_tag_t bst, 440 bus_space_handle_t bsh, bus_size_t offset, const u_int8_t *addr, 441 bus_size_t len) 442 { 443 444 __asm __volatile ( 445 " movl %0,%%a0 ;\n" 446 " movl %1,%%a1 ;\n" 447 " movl %2,%%d0 ;\n" 448 "1: movb %%a1@+,%%a0@ ;\n" 449 " subql #1,%%d0 ;\n" 450 " jne 1b" 451 : 452 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 453 : "%a0","%a1","%d0"); 454 } 455 456 static void 457 frodo_bus_space_read_region_sparse_1(bus_space_tag_t bst, 458 bus_space_handle_t bsh, bus_size_t offset, u_int8_t *addr, bus_size_t len) 459 { 460 __asm __volatile ( 461 " movl %0,%%a0 ;\n" 462 " movl %1,%%a1 ;\n" 463 " movl %2,%%d0 ;\n" 464 "1: movb %%a0@,%%a1@+ ;\n" 465 " addql #4,%%a0 ;\n" 466 " subql #1,%%d0 ;\n" 467 " jne 1b" 468 : 469 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 470 : "%a0","%a1","%d0"); 471 } 472 473 static void 474 frodo_bus_space_write_region_sparse_1(bus_space_tag_t bst, 475 bus_space_handle_t bsh, bus_size_t offset, const u_int8_t *addr, 476 bus_size_t len) 477 { 478 479 __asm __volatile ( 480 " movl %0,%%a0 ;\n" 481 " movl %1,%%a1 ;\n" 482 " movl %2,%%d0 ;\n" 483 "1: movb %%a1@+,%%a0@ ;\n" 484 " addql #4,%%a0 ;\n" 485 " subql #1,%%d0 ;\n" 486 " jne 1b" 487 : 488 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 489 : "%a0","%a1","%d0"); 490 } 491 492 static void 493 frodo_bus_space_set_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 494 bus_size_t offset, u_int8_t val, bus_size_t count) 495 { 496 __asm __volatile ( 497 " movl %0,%%a0 ;\n" 498 " movl %1,%%d1 ;\n" 499 " movl %2,%%d0 ;\n" 500 "1: movb %%d1,%%a0@ ;\n" 501 " subql #1,%%d0 ;\n" 502 " jne 1b" 503 : 504 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 505 : "%a0","%d0","%d1"); 506 } 507 508 static void 509 frodo_bus_space_set_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 510 bus_size_t offset, u_int8_t val, bus_size_t count) 511 { 512 513 __asm __volatile ( 514 " movl %0,%%a0 ;\n" 515 " movl %1,%%d1 ;\n" 516 " movl %2,%%d0 ;\n" 517 "1: movb %%d1,%%a0@ ;\n" 518 " addql #4,%%a0 ;\n" 519 " subql #1,%%d0 ;\n" 520 " jne 1b" 521 : 522 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 523 : "%a0","%d0","%d1"); 524 } 525
Indexes created Fri Oct 03 02:09:57 GMT 2025