frodo.c revision 1.27.40.2
1 /* $NetBSD: frodo.c,v 1.27.40.2 2008/06/02 13:22:06 mjf 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 60 * HP 9000/362 and 9000/382 controllers. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.27.40.2 2008/06/02 13:22:06 mjf Exp $"); 65 66 #define _HP300_INTR_H_PRIVATE 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/syslog.h> 72 #include <sys/device.h> 73 74 #include <machine/bus.h> 75 #include <machine/cpu.h> 76 #include <machine/intr.h> 77 #include <machine/hp300spu.h> 78 79 #include <hp300/dev/intiovar.h> 80 81 #include <hp300/dev/frodoreg.h> 82 #include <hp300/dev/frodovar.h> 83 84 /* 85 * Description of a Frodo interrupt handler. 86 */ 87 struct frodo_interhand { 88 int (*ih_fn)(void *); 89 void *ih_arg; 90 int ih_priority; 91 }; 92 93 struct frodo_softc { 94 device_t sc_dev; /* generic device glue */ 95 volatile uint8_t *sc_regs; /* register base */ 96 struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */ 97 int sc_ipl; 98 void *sc_ih; /* out interrupt cookie */ 99 int sc_refcnt; /* number of interrupt refs */ 100 struct bus_space_tag sc_tag; /* bus space tag */ 101 }; 102 103 static int frodomatch(device_t, cfdata_t, void *); 104 static void frodoattach(device_t, device_t, void *); 105 106 static int frodoprint(void *, const char *); 107 static int frodosubmatch(device_t, cfdata_t, const int *, void *); 108 109 static int frodointr(void *); 110 111 static void frodo_imask(struct frodo_softc *, uint16_t, uint16_t); 112 113 CFATTACH_DECL_NEW(frodo, sizeof(struct frodo_softc), 114 frodomatch, frodoattach, NULL, NULL); 115 116 static const struct frodo_device frodo_subdevs[] = { 117 { "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, 118 { "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, 119 { "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, 120 { "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, 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 fa.fa_name = fd->fd_name; 201 fa.fa_bst = bst; 202 fa.fa_base = ia->ia_iobase; 203 fa.fa_offset = fd->fd_offset; 204 fa.fa_line = fd->fd_line; 205 config_found_sm_loc(self, "frodo", NULL, &fa, frodoprint, 206 frodosubmatch); 207 } 208 } 209 210 static int 211 frodosubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 212 { 213 struct frodo_attach_args *fa = aux; 214 215 if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && 216 cf->frodocf_offset != fa->fa_offset) 217 return 0; 218 219 return config_match(parent, cf, aux); 220 } 221 222 static int 223 frodoprint(void *aux, const char *pnp) 224 { 225 struct frodo_attach_args *fa = aux; 226 227 if (pnp) 228 aprint_normal("%s at %s", fa->fa_name, pnp); 229 aprint_normal(" offset 0x%x", fa->fa_offset); 230 return UNCONF; 231 } 232 233 void 234 frodo_intr_establish(device_t frdev, int (*func)(void *), void *arg, 235 int line, int priority) 236 { 237 struct frodo_softc *sc = device_private(frdev); 238 struct hp300_intrhand *ih = sc->sc_ih; 239 240 if (line < 0 || line >= FRODO_NINTR) { 241 aprint_error_dev(frdev, "bad interrupt line %d\n", line); 242 goto lose; 243 } 244 if (sc->sc_intr[line].ih_fn != NULL) { 245 aprint_error_dev(frdev, "interrupt line %d already used\n", 246 line); 247 goto lose; 248 } 249 250 /* Install the handler. */ 251 sc->sc_intr[line].ih_fn = func; 252 sc->sc_intr[line].ih_arg = arg; 253 sc->sc_intr[line].ih_priority = priority; 254 255 /* 256 * If this is the first one, establish the frodo 257 * interrupt handler. If not, reestablish at a 258 * higher priority if necessary. 259 */ 260 if (ih == NULL || ih->ih_priority < priority) { 261 if (ih != NULL) 262 intr_disestablish(ih); 263 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority); 264 } 265 266 sc->sc_refcnt++; 267 268 /* Enable the interrupt line. */ 269 frodo_imask(sc, (1 << line), 0); 270 return; 271 lose: 272 panic("frodo_intr_establish"); 273 } 274 275 void 276 frodo_intr_disestablish(device_t frdev, int line) 277 { 278 struct frodo_softc *sc = device_private(frdev); 279 struct hp300_intrhand *ih = sc->sc_ih; 280 int newpri; 281 282 if (sc->sc_intr[line].ih_fn == NULL) { 283 printf("%s: no handler for line %d\n", 284 device_xname(sc->sc_dev), line); 285 panic("frodo_intr_disestablish"); 286 } 287 288 sc->sc_intr[line].ih_fn = NULL; 289 frodo_imask(sc, 0, (1 << line)); 290 291 /* If this was the last, unhook ourselves. */ 292 if (sc->sc_refcnt-- == 1) { 293 intr_disestablish(ih); 294 return; 295 } 296 297 /* Lower our priority, if appropriate. */ 298 for (newpri = 0, line = 0; line < FRODO_NINTR; line++) 299 if (sc->sc_intr[line].ih_fn != NULL && 300 sc->sc_intr[line].ih_priority > newpri) 301 newpri = sc->sc_intr[line].ih_priority; 302 303 if (newpri != ih->ih_priority) { 304 intr_disestablish(ih); 305 sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); 306 } 307 } 308 309 static int 310 frodointr(void *arg) 311 { 312 struct frodo_softc *sc = arg; 313 struct frodo_interhand *fih; 314 int line, taken = 0; 315 316 /* Any interrupts pending? */ 317 if (FRODO_GETPEND(sc) == 0) 318 return 0; 319 320 do { 321 /* 322 * Get pending interrupt; this also clears it for us. 323 */ 324 line = FRODO_IPEND(sc); 325 fih = &sc->sc_intr[line]; 326 if (fih->ih_fn == NULL || 327 (*fih->ih_fn)(fih->ih_arg) == 0) 328 printf("%s: spurious interrupt on line %d\n", 329 device_xname(sc->sc_dev), line); 330 if (taken++ > 100) 331 panic("frodointr: looping!"); 332 } while (FRODO_GETPEND(sc) != 0); 333 334 return 1; 335 } 336 337 static void 338 frodo_imask(struct frodo_softc *sc, uint16_t set, uint16_t clear) 339 { 340 uint16_t imask; 341 342 imask = FRODO_GETMASK(sc); 343 344 imask |= set; 345 imask &= ~clear; 346 347 FRODO_SETMASK(sc, imask); 348 } 349 350 /* 351 * frodo chip specific bus_space(9) support functions. 352 */ 353 static uint8_t frodo_bus_space_read_sparse_1(bus_space_tag_t, 354 bus_space_handle_t, bus_size_t); 355 static void frodo_bus_space_write_sparse_1(bus_space_tag_t, 356 bus_space_handle_t, bus_size_t, uint8_t); 357 358 static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t, 359 bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); 360 static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t, 361 bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); 362 363 static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t, 364 bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); 365 static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t, 366 bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); 367 368 static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t, 369 bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); 370 371 static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t, 372 bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); 373 374 /* 375 * frodo_init_bus_space(): 376 * Initialize bus_space functions in bus_space_tag_t 377 * for frodo devices which have sparse address space. 378 */ 379 void 380 frodo_init_bus_space(bus_space_tag_t bst) 381 { 382 383 memset(bst, 0, sizeof(struct bus_space_tag)); 384 bst->bustype = HP300_BUS_SPACE_INTIO; 385 386 bst->bsr1 = frodo_bus_space_read_sparse_1; 387 bst->bsw1 = frodo_bus_space_write_sparse_1; 388 389 bst->bsrm1 = frodo_bus_space_read_multi_sparse_1; 390 bst->bswm1 = frodo_bus_space_write_multi_sparse_1; 391 392 bst->bsrr1 = frodo_bus_space_read_region_sparse_1; 393 bst->bswr1 = frodo_bus_space_write_region_sparse_1; 394 395 bst->bssm1 = frodo_bus_space_set_multi_sparse_1; 396 397 bst->bssr1 = frodo_bus_space_set_region_sparse_1; 398 } 399 400 static uint8_t 401 frodo_bus_space_read_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 402 bus_size_t offset) 403 { 404 405 return *(volatile uint8_t *)(bsh + (offset << 2)); 406 } 407 408 static void 409 frodo_bus_space_write_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 410 bus_size_t offset, uint8_t val) 411 { 412 413 *(volatile uint8_t *)(bsh + (offset << 2)) = val; 414 } 415 416 static void 417 frodo_bus_space_read_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 418 bus_size_t offset, uint8_t *addr, bus_size_t len) 419 { 420 421 __asm volatile ( 422 " movl %0,%%a0 ;\n" 423 " movl %1,%%a1 ;\n" 424 " movl %2,%%d0 ;\n" 425 "1: movb %%a0@,%%a1@+ ;\n" 426 " subql #1,%%d0 ;\n" 427 " jne 1b" 428 : 429 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 430 : "%a0","%a1","%d0"); 431 } 432 433 static void 434 frodo_bus_space_write_multi_sparse_1(bus_space_tag_t bst, 435 bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, 436 bus_size_t len) 437 { 438 439 __asm volatile ( 440 " movl %0,%%a0 ;\n" 441 " movl %1,%%a1 ;\n" 442 " movl %2,%%d0 ;\n" 443 "1: movb %%a1@+,%%a0@ ;\n" 444 " subql #1,%%d0 ;\n" 445 " jne 1b" 446 : 447 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 448 : "%a0","%a1","%d0"); 449 } 450 451 static void 452 frodo_bus_space_read_region_sparse_1(bus_space_tag_t bst, 453 bus_space_handle_t bsh, bus_size_t offset, uint8_t *addr, bus_size_t len) 454 { 455 __asm volatile ( 456 " movl %0,%%a0 ;\n" 457 " movl %1,%%a1 ;\n" 458 " movl %2,%%d0 ;\n" 459 "1: movb %%a0@,%%a1@+ ;\n" 460 " addql #4,%%a0 ;\n" 461 " subql #1,%%d0 ;\n" 462 " jne 1b" 463 : 464 : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) 465 : "%a0","%a1","%d0"); 466 } 467 468 static void 469 frodo_bus_space_write_region_sparse_1(bus_space_tag_t bst, 470 bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, 471 bus_size_t len) 472 { 473 474 __asm volatile ( 475 " movl %0,%%a0 ;\n" 476 " movl %1,%%a1 ;\n" 477 " movl %2,%%d0 ;\n" 478 "1: movb %%a1@+,%%a0@ ;\n" 479 " addql #4,%%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_set_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 489 bus_size_t offset, uint8_t val, bus_size_t count) 490 { 491 __asm volatile ( 492 " movl %0,%%a0 ;\n" 493 " movl %1,%%d1 ;\n" 494 " movl %2,%%d0 ;\n" 495 "1: movb %%d1,%%a0@ ;\n" 496 " subql #1,%%d0 ;\n" 497 " jne 1b" 498 : 499 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 500 : "%a0","%d0","%d1"); 501 } 502 503 static void 504 frodo_bus_space_set_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, 505 bus_size_t offset, uint8_t val, bus_size_t count) 506 { 507 508 __asm volatile ( 509 " movl %0,%%a0 ;\n" 510 " movl %1,%%d1 ;\n" 511 " movl %2,%%d0 ;\n" 512 "1: movb %%d1,%%a0@ ;\n" 513 " addql #4,%%a0 ;\n" 514 " subql #1,%%d0 ;\n" 515 " jne 1b" 516 : 517 : "r" (bsh + (offset << 2)), "g" (val), "g" (count) 518 : "%a0","%d0","%d1"); 519 } 520
Indexes created Fri Oct 03 02:09:57 GMT 2025