frodo.c revision 1.23
1 /* $NetBSD: frodo.c,v 1.23 2005/12/24 20:07:03 perry 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 1.23 2005/12/24 20:07:03 perry 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 uint8_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 *, const int *, void *); 114 115 static int frodointr(void *); 116 117 static void frodo_imask(struct frodo_softc *, uint16_t, uint16_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 uint8_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_loc(self, "frodo", NULL, &fa, frodoprint, 211 frodosubmatch); 212 } 213 } 214 215 static int 216 frodosubmatch(struct device *parent, struct cfdata *cf, 217 const int *ldesc, void *aux) 218 { 219 struct frodo_attach_args *fa = aux; 220 221 if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && 222 cf->frodocf_offset != fa->fa_offset) 223 return (0); 224 225 return (config_match(parent, cf, aux)); 226 } 227 228 static int 229 frodoprint(void *aux, const char *pnp) 230 { 231 struct frodo_attach_args *fa = aux; 232 233 if (pnp) 234 aprint_normal("%s at %s", fa->fa_name, pnp); 235 aprint_normal(" offset 0x%x", fa->fa_offset); 236 return (UNCONF); 237 } 238 239 void 240 frodo_intr_establish(struct device *frdev, int (*func)(void *), void *arg, 241 int line, int priority) 242 { 243 struct frodo_softc *sc = (struct frodo_softc *)frdev; 244 struct hp300_intrhand *ih = sc->sc_ih; 245 246 if (line < 0 || line >= FRODO_NINTR) { 247 printf("%s: bad interrupt line %d\n", 248 sc->sc_dev.dv_xname, line); 249 goto lose; 250 } 251 if (sc->sc_intr[line].ih_fn != NULL) { 252 printf("%s: interrupt line %d already used\n", 253 sc->sc_dev.dv_xname, 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(struct device *frdev, int line) 284 { 285 struct frodo_softc *sc = (struct frodo_softc *)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 sc->sc_dev.dv_xname, 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 sc->sc_dev.dv_xname, 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