frodo.c revision 1.32.42.1
1 /* $NetBSD: frodo.c,v 1.32.42.1 2021/03/22 02:00:56 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1997 Michael Smith. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 */ 56 57 /* 58 * Support for the "Frodo" (a.k.a. "Apollo Utility") chip found 59 * in HP Apollo 9000/4xx workstations, as well as 9000/382 controllers. 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.32.42.1 2021/03/22 02:00:56 thorpej Exp $"); 64 65 #define _HP300_INTR_H_PRIVATE 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/kernel.h> 70 #include <sys/syslog.h> 71 #include <sys/device.h> 72 73 #include <machine/bus.h> 74 #include <machine/cpu.h> 75 #include <machine/intr.h> 76 #include <machine/hp300spu.h> 77 78 #include <hp300/dev/intiovar.h> 79 80 #include <hp300/dev/frodoreg.h> 81 #include <hp300/dev/frodovar.h> 82 83 /* 84 * Description of a Frodo interrupt handler. 85 */ 86 struct frodo_interhand { 87 int (*ih_fn)(void *); 88 void *ih_arg; 89 int ih_priority; 90 }; 91 92 struct frodo_softc { 93 device_t sc_dev; /* generic device glue */ 94 volatile uint8_t *sc_regs; /* register base */ 95 struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */ 96 int sc_ipl; 97 void *sc_ih; /* out interrupt cookie */ 98 int sc_refcnt; /* number of interrupt refs */ 99 struct bus_space_tag sc_tag; /* bus space tag */ 100 }; 101 102 static int frodomatch(device_t, cfdata_t, void *); 103 static void frodoattach(device_t, device_t, void *); 104 105 static int frodoprint(void *, const char *); 106 static int frodosubmatch(device_t, cfdata_t, const int *, void *); 107 108 static int frodointr(void *); 109 110 static void frodo_imask(struct frodo_softc *, uint16_t, uint16_t); 111 112 CFATTACH_DECL_NEW(frodo, sizeof(struct frodo_softc), 113 frodomatch, frodoattach, NULL, NULL); 114 115 static const struct frodo_device frodo_subdevs[] = { 116 { "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, 117 { "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, 118 { "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, 119 { "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, 120 { "mcclock", FRODO_CALENDAR, FRODO_INTR_CALENDAR }, 121 { NULL, 0, 0 } 122 }; 123 124 static int 125 frodomatch(device_t parent, cfdata_t cf, void *aux) 126 { 127 struct intio_attach_args *ia = aux; 128 static int frodo_matched = 0; 129 130 /* only allow one instance */ 131 if (frodo_matched) 132 return 0; 133 134 if (strcmp(ia->ia_modname, "frodo") != 0) 135 return 0; 136 137 if (badaddr((void *)ia->ia_addr)) 138 return 0; 139 140 frodo_matched = 1; 141 return 1; 142 } 143 144 static void 145 frodoattach(device_t parent, device_t self, void *aux) 146 { 147 struct frodo_softc *sc = device_private(self); 148 struct intio_attach_args *ia = aux; 149 bus_space_tag_t bst = &sc->sc_tag; 150 const struct frodo_device *fd; 151 struct frodo_attach_args fa; 152 153 sc->sc_dev = self; 154 sc->sc_regs = (volatile uint8_t *)ia->ia_addr; 155 sc->sc_ipl = ia->ia_ipl; 156 157 if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0) 158 aprint_error(": service mode enabled"); 159 aprint_normal("\n"); 160 161 /* Initialize bus_space_tag_t for frodo */ 162 frodo_init_bus_space(bst); 163 164 /* Clear all of the interrupt handlers. */ 165 memset(sc->sc_intr, 0, sizeof(sc->sc_intr)); 166 sc->sc_refcnt = 0; 167 168 /* 169 * Disable all of the interrupt lines; we reenable them 170 * as subdevices attach. 171 */ 172 frodo_imask(sc, 0, 0xffff); 173 174 /* Clear any pending interrupts. */ 175 FRODO_WRITE(sc, FRODO_PIC_PU, 0xff); 176 FRODO_WRITE(sc, FRODO_PIC_PL, 0xff); 177 178 /* Set interrupt polarities. */ 179 FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10); 180 181 /* ...and configure for edge triggering. */ 182 FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf); 183 184 /* 185 * We defer hooking up our interrupt handler until 186 * a subdevice hooks up theirs. 187 */ 188 sc->sc_ih = NULL; 189 190 /* ... and attach subdevices. */ 191 for (fd = frodo_subdevs; fd->fd_name != NULL; fd++) { 192 /* 193 * Skip the first serial port if we're not a 425e; 194 * it's mapped to the DCA at select code 9 on all 195 * other models. 196 */ 197 if (fd->fd_offset == FRODO_APCI_OFFSET(1) && 198 mmuid != MMUID_425_E) 199 continue; 200 /* 201 * The mcclock is available only on a 425e. 202 */ 203 if (fd->fd_offset == FRODO_CALENDAR && mmuid != MMUID_425_E) 204 continue; 205 fa.fa_name = fd->fd_name; 206 fa.fa_bst = bst; 207 fa.fa_base = ia->ia_iobase; 208 fa.fa_offset = fd->fd_offset; 209 fa.fa_line = fd->fd_line; 210 config_found(self, &fa, frodoprint, 211 CFARG_SUBMATCH, frodosubmatch, 212 CFARG_IATTR, "frodo", 213 CFARG_EOL); 214 } 215 } 216 217 static int 218 frodosubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 219 { 220 struct frodo_attach_args *fa = aux; 221 222 if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && 223 cf->frodocf_offset != fa->fa_offset) 224 return 0; 225 226 return config_match(parent, cf, aux); 227 } 228 229 static int 230 frodoprint(void *aux, const char *pnp) 231 { 232 struct frodo_attach_args *fa = aux; 233 234 if (pnp) 235 aprint_normal("%s at %s", fa->fa_name, pnp); 236 aprint_normal(" offset 0x%x", fa->fa_offset); 237 return UNCONF; 238 } 239 240 void 241 frodo_intr_establish(device_t frdev, int (*func)(void *), void *arg, 242 int line, int priority) 243 { 244 struct frodo_softc *sc = device_private(frdev); 245 struct hp300_intrhand *ih = sc->sc_ih; 246 247 if (line < 0 || line >= FRODO_NINTR) { 248 aprint_error_dev(frdev, "bad interrupt line %d\n", line); 249 goto lose; 250 } 251 if (sc->sc_intr[line].ih_fn != NULL) { 252 aprint_error_dev(frdev, "interrupt line %d already used\n", 253 line); 254 goto lose; 255 } 256 257 /* Install the handler. */ 258 sc->sc_intr[line].ih_fn = func; 259 sc->sc_intr[line].ih_arg = arg; 260 sc->sc_intr[line].ih_priority = priority; 261 262 /* 263 * If this is the first one, establish the frodo 264 * interrupt handler. If not, reestablish at a 265 * higher priority if necessary. 266 */ 267 if (ih == NULL || ih->ih_priority < priority) { 268 if (ih != NULL) 269 intr_disestablish(ih); 270 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority); 271 } 272 273 sc->sc_refcnt++; 274 275 /* Enable the interrupt line. */ 276 frodo_imask(sc, (1 << line), 0); 277 return; 278 lose: 279 panic("frodo_intr_establish"); 280 } 281 282 void 283 frodo_intr_disestablish(device_t frdev, int line) 284 { 285 struct frodo_softc *sc = device_private(frdev); 286 struct hp300_intrhand *ih = sc->sc_ih; 287 int newpri; 288 289 if (sc->sc_intr[line].ih_fn == NULL) { 290 printf("%s: no handler for line %d\n", 291 device_xname(sc->sc_dev), line); 292 panic("frodo_intr_disestablish"); 293 } 294 295 sc->sc_intr[line].ih_fn = NULL; 296 frodo_imask(sc, 0, (1 << line)); 297 298 /* If this was the last, unhook ourselves. */ 299 if (sc->sc_refcnt-- == 1) { 300 intr_disestablish(ih); 301 return; 302 } 303 304 /* Lower our priority, if appropriate. */ 305 for (newpri = 0, line = 0; line < FRODO_NINTR; line++) 306 if (sc->sc_intr[line].ih_fn != NULL && 307 sc->sc_intr[line].ih_priority > newpri) 308 newpri = sc->sc_intr[line].ih_priority; 309 310 if (newpri != ih->ih_priority) { 311 intr_disestablish(ih); 312 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); 313 } 314 } 315 316 static int 317 frodointr(void *arg) 318 { 319 struct frodo_softc *sc = arg; 320 struct frodo_interhand *fih; 321 int line, taken = 0; 322 323 /* Any interrupts pending? */ 324 if (FRODO_GETPEND(sc) == 0) 325 return 0; 326 327 do { 328 /* 329 * Get pending interrupt; this also clears it for us. 330 */ 331 line = FRODO_IPEND(sc); 332 fih = &sc->sc_intr[line]; 333 if (fih->ih_fn == NULL || 334 (*fih->ih_fn)(fih->ih_arg) == 0) 335 printf("%s: spurious interrupt on line %d\n", 336 device_xname(sc->sc_dev), line); 337 if (taken++ > 100) 338 panic("frodointr: looping!"); 339 } while (FRODO_GETPEND(sc) != 0); 340 341 return 1; 342 } 343 344 static void 345 frodo_imask(struct frodo_softc *sc, uint16_t set, uint16_t clear) 346 { 347 uint16_t imask; 348 349 imask = FRODO_GETMASK(sc); 350 351 imask |= set; 352 imask &= ~clear; 353 354 FRODO_SETMASK(sc, imask); 355 } 356 357 /* 358 * frodo chip specific bus_space(9) support functions. 359 */ 360 static uint8_t frodo_bus_space_read_sparse_1(bus_space_tag_t, 361 bus_space_handle_t, bus_size_t); 362 static void frodo_bus_space_write_sparse_1(bus_space_tag_t, 363 bus_space_handle_t, bus_size_t, uint8_t); 364 365 static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t, 366 bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); 367 static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t, 368 bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); 369 370 static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t, 371 bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); 372 static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t, 373 bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); 374 375 static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t, 376 bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); 377 378 static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t, 379 bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); 380 381 /* 382 * frodo_init_bus_space(): 383 * Initialize bus_space functions in bus_space_tag_t 384 * for frodo devices which have sparse address space. 385 */ 386 void 387 frodo_init_bus_space(bus_space_tag_t bst) 388 { 389 390 memset(bst, 0, sizeof(struct bus_space_tag)); 391 bst->bustype = HP300_BUS_SPACE_INTIO; 392 393 bst->bsr1 = frodo_bus_space_read_sparse_1; 394 bst->bsw1 = frodo_bus_space_write_sparse_1; 395 396 bst->bsrm1 = frodo_bus_space_read_multi_sparse_1; 397 bst->bswm1 = frodo_bus_space_write_multi_sparse_1; 398 399 bst->bsrr1 = frodo_bus_space_read_region_sparse_1; 400 bst->bswr1 = frodo_bus_space_write_region_sparse_1; 401 402 bst->bssm1 = frodo_bus_space_set_multi_sparse_1; 403 404 bst->bssr1 = frodo_bus_space_set_region_sparse_1; 405 } 406 407 static uint8_t 408 frodo_bus_space_read_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 409 bus_size_t offset) 410 { 411 412 return *(volatile uint8_t *)(bsh + (offset << 2)); 413 } 414 415 static void 416 frodo_bus_space_write_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 417 bus_size_t offset, uint8_t val) 418 { 419 420 *(volatile uint8_t *)(bsh + (offset << 2)) = val; 421 } 422 423 static void 424 frodo_bus_space_read_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 425 bus_size_t offset, uint8_t *addr, bus_size_t len) 426 { 427 428 __asm volatile ( 429 " movl %0,%%a0 ;\n" 430 " movl %1,%%a1 ;\n" 431 " movl %2,%%d0 ;\n" 432 "1: movb %%a0@,%%a1@+ ;\n" 433 " subql #1,%%d0 ;\n" 434 " jne 1b" 435 : 436 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 437 : "%a0","%a1","%d0"); 438 } 439 440 static void 441 frodo_bus_space_write_multi_sparse_1(bus_space_tag_t bst, 442 bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, 443 bus_size_t len) 444 { 445 446 __asm volatile ( 447 " movl %0,%%a0 ;\n" 448 " movl %1,%%a1 ;\n" 449 " movl %2,%%d0 ;\n" 450 "1: movb %%a1@+,%%a0@ ;\n" 451 " subql #1,%%d0 ;\n" 452 " jne 1b" 453 : 454 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 455 : "%a0","%a1","%d0"); 456 } 457 458 static void 459 frodo_bus_space_read_region_sparse_1(bus_space_tag_t bst, 460 bus_space_handle_t bsh, bus_size_t offset, uint8_t *addr, bus_size_t len) 461 { 462 __asm volatile ( 463 " movl %0,%%a0 ;\n" 464 " movl %1,%%a1 ;\n" 465 " movl %2,%%d0 ;\n" 466 "1: movb %%a0@,%%a1@+ ;\n" 467 " addql #4,%%a0 ;\n" 468 " subql #1,%%d0 ;\n" 469 " jne 1b" 470 : 471 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 472 : "%a0","%a1","%d0"); 473 } 474 475 static void 476 frodo_bus_space_write_region_sparse_1(bus_space_tag_t bst, 477 bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, 478 bus_size_t len) 479 { 480 481 __asm volatile ( 482 " movl %0,%%a0 ;\n" 483 " movl %1,%%a1 ;\n" 484 " movl %2,%%d0 ;\n" 485 "1: movb %%a1@+,%%a0@ ;\n" 486 " addql #4,%%a0 ;\n" 487 " subql #1,%%d0 ;\n" 488 " jne 1b" 489 : 490 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 491 : "%a0","%a1","%d0"); 492 } 493 494 static void 495 frodo_bus_space_set_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 496 bus_size_t offset, uint8_t val, bus_size_t count) 497 { 498 __asm volatile ( 499 " movl %0,%%a0 ;\n" 500 " movl %1,%%d1 ;\n" 501 " movl %2,%%d0 ;\n" 502 "1: movb %%d1,%%a0@ ;\n" 503 " subql #1,%%d0 ;\n" 504 " jne 1b" 505 : 506 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 507 : "%a0","%d0","%d1"); 508 } 509 510 static void 511 frodo_bus_space_set_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 512 bus_size_t offset, uint8_t val, bus_size_t count) 513 { 514 515 __asm volatile ( 516 " movl %0,%%a0 ;\n" 517 " movl %1,%%d1 ;\n" 518 " movl %2,%%d0 ;\n" 519 "1: movb %%d1,%%a0@ ;\n" 520 " addql #4,%%a0 ;\n" 521 " subql #1,%%d0 ;\n" 522 " jne 1b" 523 : 524 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 525 : "%a0","%d0","%d1"); 526 } 527
Indexes created Fri Oct 03 02:09:57 GMT 2025