frodo.c revision 1.27
1 /* $NetBSD: frodo.c,v 1.27 2007/03/04 05:59:47 christos 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, as well as 67 * HP 9000/362 and 9000/382 controllers. 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.27 2007/03/04 05:59:47 christos Exp $"); 72 73 #define _HP300_INTR_H_PRIVATE 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/syslog.h> 79 #include <sys/device.h> 80 81 #include <machine/bus.h> 82 #include <machine/cpu.h> 83 #include <machine/intr.h> 84 #include <machine/hp300spu.h> 85 86 #include <hp300/dev/intiovar.h> 87 88 #include <hp300/dev/frodoreg.h> 89 #include <hp300/dev/frodovar.h> 90 91 /* 92 * Description of a Frodo interrupt handler. 93 */ 94 struct frodo_interhand { 95 int (*ih_fn)(void *); 96 void *ih_arg; 97 int ih_priority; 98 }; 99 100 struct frodo_softc { 101 struct device sc_dev; /* generic device glue */ 102 volatile uint8_t *sc_regs; /* register base */ 103 struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */ 104 int sc_ipl; 105 void *sc_ih; /* out interrupt cookie */ 106 int sc_refcnt; /* number of interrupt refs */ 107 struct bus_space_tag sc_tag; /* bus space tag */ 108 }; 109 110 static int frodomatch(struct device *, struct cfdata *, void *); 111 static void frodoattach(struct device *, struct device *, void *); 112 113 static int frodoprint(void *, const char *); 114 static int frodosubmatch(struct device *, struct cfdata *, const int *, void *); 115 116 static int frodointr(void *); 117 118 static void frodo_imask(struct frodo_softc *, uint16_t, uint16_t); 119 120 CFATTACH_DECL(frodo, sizeof(struct frodo_softc), 121 frodomatch, frodoattach, NULL, NULL); 122 123 static const struct frodo_device frodo_subdevs[] = { 124 { "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, 125 { "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, 126 { "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, 127 { "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, 128 { NULL, 0, 0 } 129 }; 130 131 static int 132 frodomatch(struct device *parent, struct cfdata *match, 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((void *)ia->ia_addr)) 145 return 0; 146 147 frodo_matched = 1; 148 return 1; 149 } 150 151 static void 152 frodoattach(struct device *parent, struct device *self, void *aux) 153 { 154 struct frodo_softc *sc = (struct frodo_softc *)self; 155 struct intio_attach_args *ia = aux; 156 bus_space_tag_t bst = &sc->sc_tag; 157 const struct frodo_device *fd; 158 struct frodo_attach_args fa; 159 160 sc->sc_regs = (volatile uint8_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 /* Initialize bus_space_tag_t for frodo */ 168 frodo_init_bus_space(bst); 169 170 /* Clear all of the interrupt handlers. */ 171 memset(sc->sc_intr, 0, sizeof(sc->sc_intr)); 172 sc->sc_refcnt = 0; 173 174 /* 175 * Disable all of the interrupt lines; we reenable them 176 * as subdevices attach. 177 */ 178 frodo_imask(sc, 0, 0xffff); 179 180 /* Clear any pending interrupts. */ 181 FRODO_WRITE(sc, FRODO_PIC_PU, 0xff); 182 FRODO_WRITE(sc, FRODO_PIC_PL, 0xff); 183 184 /* Set interrupt polarities. */ 185 FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10); 186 187 /* ...and configure for edge triggering. */ 188 FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf); 189 190 /* 191 * We defer hooking up our interrupt handler until 192 * a subdevice hooks up theirs. 193 */ 194 sc->sc_ih = NULL; 195 196 /* ... and attach subdevices. */ 197 for (fd = frodo_subdevs; fd->fd_name != NULL; fd++) { 198 /* 199 * Skip the first serial port if we're not a 425e; 200 * it's mapped to the DCA at select code 9 on all 201 * other models. 202 */ 203 if (fd->fd_offset == FRODO_APCI_OFFSET(1) && 204 mmuid != MMUID_425_E) 205 continue; 206 fa.fa_name = fd->fd_name; 207 fa.fa_bst = bst; 208 fa.fa_base = ia->ia_iobase; 209 fa.fa_offset = fd->fd_offset; 210 fa.fa_line = fd->fd_line; 211 config_found_sm_loc(self, "frodo", NULL, &fa, frodoprint, 212 frodosubmatch); 213 } 214 } 215 216 static int 217 frodosubmatch(struct device *parent, struct cfdata *cf, 218 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(struct device *frdev, int (*func)(void *), void *arg, 242 int line, 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(struct device *frdev, int line) 285 { 286 struct frodo_softc *sc = (struct frodo_softc *)frdev; 287 struct hp300_intrhand *ih = sc->sc_ih; 288 int newpri; 289 290 if (sc->sc_intr[line].ih_fn == NULL) { 291 printf("%s: no handler for line %d\n", 292 sc->sc_dev.dv_xname, line); 293 panic("frodo_intr_disestablish"); 294 } 295 296 sc->sc_intr[line].ih_fn = NULL; 297 frodo_imask(sc, 0, (1 << line)); 298 299 /* If this was the last, unhook ourselves. */ 300 if (sc->sc_refcnt-- == 1) { 301 intr_disestablish(ih); 302 return; 303 } 304 305 /* Lower our priority, if appropriate. */ 306 for (newpri = 0, line = 0; line < FRODO_NINTR; line++) 307 if (sc->sc_intr[line].ih_fn != NULL && 308 sc->sc_intr[line].ih_priority > newpri) 309 newpri = sc->sc_intr[line].ih_priority; 310 311 if (newpri != ih->ih_priority) { 312 intr_disestablish(ih); 313 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); 314 } 315 } 316 317 static int 318 frodointr(void *arg) 319 { 320 struct frodo_softc *sc = arg; 321 struct frodo_interhand *fih; 322 int line, taken = 0; 323 324 /* Any interrupts pending? */ 325 if (FRODO_GETPEND(sc) == 0) 326 return 0; 327 328 do { 329 /* 330 * Get pending interrupt; this also clears it for us. 331 */ 332 line = FRODO_IPEND(sc); 333 fih = &sc->sc_intr[line]; 334 if (fih->ih_fn == NULL || 335 (*fih->ih_fn)(fih->ih_arg) == 0) 336 printf("%s: spurious interrupt on line %d\n", 337 sc->sc_dev.dv_xname, line); 338 if (taken++ > 100) 339 panic("frodointr: looping!"); 340 } while (FRODO_GETPEND(sc) != 0); 341 342 return 1; 343 } 344 345 static void 346 frodo_imask(struct frodo_softc *sc, uint16_t set, uint16_t clear) 347 { 348 uint16_t imask; 349 350 imask = FRODO_GETMASK(sc); 351 352 imask |= set; 353 imask &= ~clear; 354 355 FRODO_SETMASK(sc, imask); 356 } 357 358 /* 359 * frodo chip specific bus_space(9) support functions. 360 */ 361 static uint8_t frodo_bus_space_read_sparse_1(bus_space_tag_t, 362 bus_space_handle_t, bus_size_t); 363 static void frodo_bus_space_write_sparse_1(bus_space_tag_t, 364 bus_space_handle_t, bus_size_t, uint8_t); 365 366 static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t, 367 bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); 368 static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t, 369 bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); 370 371 static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t, 372 bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); 373 static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t, 374 bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); 375 376 static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t, 377 bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); 378 379 static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t, 380 bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); 381 382 /* 383 * frodo_init_bus_space(): 384 * Initialize bus_space functions in bus_space_tag_t 385 * for frodo devices which have sparse address space. 386 */ 387 void 388 frodo_init_bus_space(bus_space_tag_t bst) 389 { 390 391 memset(bst, 0, sizeof(struct bus_space_tag)); 392 bst->bustype = HP300_BUS_SPACE_INTIO; 393 394 bst->bsr1 = frodo_bus_space_read_sparse_1; 395 bst->bsw1 = frodo_bus_space_write_sparse_1; 396 397 bst->bsrm1 = frodo_bus_space_read_multi_sparse_1; 398 bst->bswm1 = frodo_bus_space_write_multi_sparse_1; 399 400 bst->bsrr1 = frodo_bus_space_read_region_sparse_1; 401 bst->bswr1 = frodo_bus_space_write_region_sparse_1; 402 403 bst->bssm1 = frodo_bus_space_set_multi_sparse_1; 404 405 bst->bssr1 = frodo_bus_space_set_region_sparse_1; 406 } 407 408 static uint8_t 409 frodo_bus_space_read_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 410 bus_size_t offset) 411 { 412 413 return *(volatile uint8_t *)(bsh + (offset << 2)); 414 } 415 416 static void 417 frodo_bus_space_write_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 418 bus_size_t offset, uint8_t val) 419 { 420 421 *(volatile uint8_t *)(bsh + (offset << 2)) = val; 422 } 423 424 static void 425 frodo_bus_space_read_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 426 bus_size_t offset, uint8_t *addr, bus_size_t len) 427 { 428 429 __asm volatile ( 430 " movl %0,%%a0 ;\n" 431 " movl %1,%%a1 ;\n" 432 " movl %2,%%d0 ;\n" 433 "1: movb %%a0@,%%a1@+ ;\n" 434 " subql #1,%%d0 ;\n" 435 " jne 1b" 436 : 437 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 438 : "%a0","%a1","%d0"); 439 } 440 441 static void 442 frodo_bus_space_write_multi_sparse_1(bus_space_tag_t bst, 443 bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, 444 bus_size_t len) 445 { 446 447 __asm volatile ( 448 " movl %0,%%a0 ;\n" 449 " movl %1,%%a1 ;\n" 450 " movl %2,%%d0 ;\n" 451 "1: movb %%a1@+,%%a0@ ;\n" 452 " subql #1,%%d0 ;\n" 453 " jne 1b" 454 : 455 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 456 : "%a0","%a1","%d0"); 457 } 458 459 static void 460 frodo_bus_space_read_region_sparse_1(bus_space_tag_t bst, 461 bus_space_handle_t bsh, bus_size_t offset, uint8_t *addr, bus_size_t len) 462 { 463 __asm volatile ( 464 " movl %0,%%a0 ;\n" 465 " movl %1,%%a1 ;\n" 466 " movl %2,%%d0 ;\n" 467 "1: movb %%a0@,%%a1@+ ;\n" 468 " addql #4,%%a0 ;\n" 469 " subql #1,%%d0 ;\n" 470 " jne 1b" 471 : 472 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 473 : "%a0","%a1","%d0"); 474 } 475 476 static void 477 frodo_bus_space_write_region_sparse_1(bus_space_tag_t bst, 478 bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, 479 bus_size_t len) 480 { 481 482 __asm volatile ( 483 " movl %0,%%a0 ;\n" 484 " movl %1,%%a1 ;\n" 485 " movl %2,%%d0 ;\n" 486 "1: movb %%a1@+,%%a0@ ;\n" 487 " addql #4,%%a0 ;\n" 488 " subql #1,%%d0 ;\n" 489 " jne 1b" 490 : 491 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 492 : "%a0","%a1","%d0"); 493 } 494 495 static void 496 frodo_bus_space_set_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 497 bus_size_t offset, uint8_t val, bus_size_t count) 498 { 499 __asm volatile ( 500 " movl %0,%%a0 ;\n" 501 " movl %1,%%d1 ;\n" 502 " movl %2,%%d0 ;\n" 503 "1: movb %%d1,%%a0@ ;\n" 504 " subql #1,%%d0 ;\n" 505 " jne 1b" 506 : 507 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 508 : "%a0","%d0","%d1"); 509 } 510 511 static void 512 frodo_bus_space_set_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 513 bus_size_t offset, uint8_t val, bus_size_t count) 514 { 515 516 __asm volatile ( 517 " movl %0,%%a0 ;\n" 518 " movl %1,%%d1 ;\n" 519 " movl %2,%%d0 ;\n" 520 "1: movb %%d1,%%a0@ ;\n" 521 " addql #4,%%a0 ;\n" 522 " subql #1,%%d0 ;\n" 523 " jne 1b" 524 : 525 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 526 : "%a0","%d0","%d1"); 527 } 528
Indexes created Fri Oct 03 02:09:57 GMT 2025