pcmcia.c revision 1.7
1 /* $NetBSD: pcmcia.c,v 1.7 1998/06/05 02:51:17 enami Exp $ */ 2 3 #define PCMCIADEBUG 4 5 /* 6 * Copyright (c) 1997 Marc Horowitz. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Marc Horowitz. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "opt_pcmciaverbose.h" 35 36 #include <sys/types.h> 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 41 /* XXX only needed for intr debugging */ 42 #include <vm/vm.h> 43 44 #include <dev/pcmcia/pcmciareg.h> 45 #include <dev/pcmcia/pcmciachip.h> 46 #include <dev/pcmcia/pcmciavar.h> 47 48 #include "locators.h" 49 50 #ifdef PCMCIADEBUG 51 int pcmcia_debug = 0; 52 #define DPRINTF(arg) if (pcmcia_debug) printf arg 53 #else 54 #define DPRINTF(arg) 55 #endif 56 57 #ifdef PCMCIAVERBOSE 58 int pcmcia_verbose = 1; 59 #else 60 int pcmcia_verbose = 0; 61 #endif 62 63 #ifdef __BROKEN_INDIRECT_CONFIG 64 int pcmcia_match __P((struct device *, void *, void *)); 65 int pcmcia_submatch __P((struct device *, void *, void *)); 66 #else 67 int pcmcia_match __P((struct device *, struct cfdata *, void *)); 68 int pcmcia_submatch __P((struct device *, struct cfdata *, void *)); 69 #endif 70 void pcmcia_attach __P((struct device *, struct device *, void *)); 71 int pcmcia_print __P((void *, const char *)); 72 73 static inline void pcmcia_socket_enable __P((pcmcia_chipset_tag_t, 74 pcmcia_chipset_handle_t *)); 75 static inline void pcmcia_socket_disable __P((pcmcia_chipset_tag_t, 76 pcmcia_chipset_handle_t *)); 77 78 int pcmcia_card_intr __P((void *)); 79 80 struct cfattach pcmcia_ca = { 81 sizeof(struct pcmcia_softc), pcmcia_match, pcmcia_attach 82 }; 83 84 int 85 pcmcia_ccr_read(pf, ccr) 86 struct pcmcia_function *pf; 87 int ccr; 88 { 89 90 return (bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh, 91 pf->pf_ccr_offset + ccr)); 92 } 93 94 void 95 pcmcia_ccr_write(pf, ccr, val) 96 struct pcmcia_function *pf; 97 int ccr; 98 int val; 99 { 100 101 if ((pf->ccr_mask) & (1 << (ccr / 2))) { 102 bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh, 103 pf->pf_ccr_offset + ccr, val); 104 } 105 } 106 107 int 108 pcmcia_match(parent, match, aux) 109 struct device *parent; 110 #ifdef __BROKEN_INDIRECT_CONFIG 111 void *match; 112 #else 113 struct cfdata *match; 114 #endif 115 void *aux; 116 { 117 /* if the autoconfiguration got this far, there's a socket here */ 118 return (1); 119 } 120 121 void 122 pcmcia_attach(parent, self, aux) 123 struct device *parent, *self; 124 void *aux; 125 { 126 struct pcmciabus_attach_args *paa = aux; 127 struct pcmcia_softc *sc = (struct pcmcia_softc *) self; 128 129 printf("\n"); 130 131 sc->pct = paa->pct; 132 sc->pch = paa->pch; 133 sc->iobase = paa->iobase; 134 sc->iosize = paa->iosize; 135 136 sc->ih = NULL; 137 } 138 139 int 140 pcmcia_card_attach(dev) 141 struct device *dev; 142 { 143 struct pcmcia_softc *sc = (struct pcmcia_softc *) dev; 144 struct pcmcia_function *pf; 145 struct pcmcia_attach_args paa; 146 int attached; 147 148 /* 149 * this is here so that when socket_enable calls gettype, trt happens 150 */ 151 sc->card.pf_head.sqh_first = NULL; 152 153 pcmcia_chip_socket_enable(sc->pct, sc->pch); 154 155 pcmcia_read_cis(sc); 156 157 pcmcia_chip_socket_disable(sc->pct, sc->pch); 158 159 /* 160 * bail now if the card has no functions, or if there was an error in 161 * the cis. 162 */ 163 164 if (sc->card.error) 165 return (1); 166 if (sc->card.pf_head.sqh_first == NULL) 167 return (1); 168 169 if (pcmcia_verbose) 170 pcmcia_print_cis(sc); 171 172 attached = 0; 173 174 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 175 pf = pf->pf_list.sqe_next) { 176 if (pf->cfe_head.sqh_first == NULL) 177 continue; 178 179 pf->sc = sc; 180 pf->cfe = NULL; 181 pf->ih_fct = NULL; 182 pf->ih_arg = NULL; 183 } 184 185 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 186 pf = pf->pf_list.sqe_next) { 187 if (pf->cfe_head.sqh_first == NULL) 188 continue; 189 190 paa.manufacturer = sc->card.manufacturer; 191 paa.product = sc->card.product; 192 paa.card = &sc->card; 193 paa.pf = pf; 194 195 if (config_found_sm(&sc->dev, &paa, pcmcia_print, 196 pcmcia_submatch)) { 197 attached++; 198 199 DPRINTF(("%s: function %d CCR at %d " 200 "offset %lx: %x %x %x %x, %x %x %x %x, %x\n", 201 sc->dev.dv_xname, pf->number, 202 pf->pf_ccr_window, pf->pf_ccr_offset, 203 pcmcia_ccr_read(pf, 0x00), 204 pcmcia_ccr_read(pf, 0x02), pcmcia_ccr_read(pf, 0x04), 205 pcmcia_ccr_read(pf, 0x06), pcmcia_ccr_read(pf, 0x0A), 206 pcmcia_ccr_read(pf, 0x0C), pcmcia_ccr_read(pf, 0x0E), 207 pcmcia_ccr_read(pf, 0x10), pcmcia_ccr_read(pf, 0x12))); 208 } 209 } 210 211 return (attached ? 0 : 1); 212 } 213 214 void 215 pcmcia_card_detach(dev) 216 struct device *dev; 217 { 218 /* struct pcmcia_softc *sc = (struct pcmcia_softc *) dev; */ 219 /* don't do anything yet */ 220 } 221 222 int 223 #ifdef __BROKEN_INDIRECT_CONFIG 224 pcmcia_submatch(parent, match, aux) 225 struct device *parent; 226 void *match, *aux; 227 { 228 struct cfdata *cf = match; 229 #else 230 pcmcia_submatch(parent, cf, aux) 231 struct device *parent; 232 struct cfdata *cf; 233 void *aux; 234 { 235 #endif 236 struct pcmcia_attach_args *paa = aux; 237 238 if (cf->cf_loc[PCMCIACF_FUNCTION] != PCMCIACF_FUNCTION_DEFAULT && 239 cf->cf_loc[PCMCIACF_FUNCTION] != paa->pf->number) 240 return (0); 241 242 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 243 } 244 245 int 246 pcmcia_print(arg, pnp) 247 void *arg; 248 const char *pnp; 249 { 250 struct pcmcia_attach_args *pa = arg; 251 struct pcmcia_softc *sc = pa->pf->sc; 252 struct pcmcia_card *card = &sc->card; 253 int i; 254 255 if (pnp) { 256 for (i = 0; i < 4; i++) { 257 if (card->cis1_info[i] == NULL) 258 break; 259 if (i) 260 printf(", "); 261 printf("%s", card->cis1_info[i]); 262 } 263 if (i) 264 printf(" "); 265 printf("(manufacturer 0x%x, product 0x%x)", card->manufacturer, 266 card->product); 267 } 268 printf(" function %d", pa->pf->number); 269 270 return (UNCONF); 271 } 272 273 int 274 pcmcia_card_gettype(dev) 275 struct device *dev; 276 { 277 struct pcmcia_softc *sc = (struct pcmcia_softc *)dev; 278 struct pcmcia_function *pf; 279 280 /* 281 * set the iftype to memory if this card has no functions (not yet 282 * probed), or only one function, and that is not initialized yet or 283 * that is memory. 284 */ 285 pf = SIMPLEQ_FIRST(&sc->card.pf_head); 286 if (pf == NULL || 287 (SIMPLEQ_NEXT(pf, pf_list) == NULL && 288 (pf->cfe == NULL || pf->cfe->iftype == PCMCIA_IFTYPE_MEMORY))) 289 return (PCMCIA_IFTYPE_MEMORY); 290 else 291 return (PCMCIA_IFTYPE_IO); 292 } 293 294 /* 295 * Initialize a PCMCIA function. May be called as long as the function is 296 * disabled. 297 */ 298 void 299 pcmcia_function_init(pf, cfe) 300 struct pcmcia_function *pf; 301 struct pcmcia_config_entry *cfe; 302 { 303 if (pf->pf_flags & PFF_ENABLED) 304 panic("pcmcia_function_init: function is enabled"); 305 306 /* Remember which configuration entry we are using. */ 307 pf->cfe = cfe; 308 } 309 310 static inline void pcmcia_socket_enable(pct, pch) 311 pcmcia_chipset_tag_t pct; 312 pcmcia_chipset_handle_t *pch; 313 { 314 pcmcia_chip_socket_enable(pct, pch); 315 } 316 317 static inline void pcmcia_socket_disable(pct, pch) 318 pcmcia_chipset_tag_t pct; 319 pcmcia_chipset_handle_t *pch; 320 { 321 pcmcia_chip_socket_disable(pct, pch); 322 } 323 324 /* Enable a PCMCIA function */ 325 int 326 pcmcia_function_enable(pf) 327 struct pcmcia_function *pf; 328 { 329 struct pcmcia_function *tmp; 330 int reg; 331 332 if (pf->cfe == NULL) 333 panic("pcmcia_function_enable: function not initialized"); 334 335 /* 336 * Increase the reference count on the socket, enabling power, if 337 * necessary. 338 */ 339 if (pf->sc->sc_enabled_count++ == 0) 340 pcmcia_chip_socket_enable(pf->sc->pct, pf->sc->pch); 341 DPRINTF(("%s: ++enabled_count = %d\n", pf->sc->dev.dv_xname, 342 pf->sc->sc_enabled_count)); 343 344 if (pf->pf_flags & PFF_ENABLED) { 345 /* 346 * Don't do anything if we're already enabled. 347 */ 348 return (0); 349 } 350 351 /* 352 * it's possible for different functions' CCRs to be in the same 353 * underlying page. Check for that. 354 */ 355 356 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 357 tmp = tmp->pf_list.sqe_next) { 358 if ((tmp->pf_flags & PFF_ENABLED) && 359 (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) && 360 ((pf->ccr_base + PCMCIA_CCR_SIZE) <= 361 (tmp->ccr_base - tmp->pf_ccr_offset + 362 tmp->pf_ccr_realsize))) { 363 pf->pf_ccrt = tmp->pf_ccrt; 364 pf->pf_ccrh = tmp->pf_ccrh; 365 pf->pf_ccr_realsize = tmp->pf_ccr_realsize; 366 367 /* 368 * pf->pf_ccr_offset = (tmp->pf_ccr_offset - 369 * tmp->ccr_base) + pf->ccr_base; 370 */ 371 pf->pf_ccr_offset = 372 (tmp->pf_ccr_offset + pf->ccr_base) - 373 tmp->ccr_base; 374 pf->pf_ccr_window = tmp->pf_ccr_window; 375 break; 376 } 377 } 378 379 if (tmp == NULL) { 380 if (pcmcia_mem_alloc(pf, PCMCIA_CCR_SIZE, &pf->pf_pcmh)) 381 goto bad; 382 383 if (pcmcia_mem_map(pf, PCMCIA_MEM_ATTR, pf->ccr_base, 384 PCMCIA_CCR_SIZE, &pf->pf_pcmh, &pf->pf_ccr_offset, 385 &pf->pf_ccr_window)) { 386 pcmcia_mem_free(pf, &pf->pf_pcmh); 387 goto bad; 388 } 389 } 390 391 reg = (pf->cfe->number & PCMCIA_CCR_OPTION_CFINDEX); 392 reg |= PCMCIA_CCR_OPTION_LEVIREQ; 393 if (pcmcia_mfc(pf->sc)) { 394 reg |= (PCMCIA_CCR_OPTION_FUNC_ENABLE | 395 PCMCIA_CCR_OPTION_ADDR_DECODE); 396 if (pf->ih_fct) 397 reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE; 398 399 } 400 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 401 402 reg = 0; 403 404 if ((pf->cfe->flags & PCMCIA_CFE_IO16) == 0) 405 reg |= PCMCIA_CCR_STATUS_IOIS8; 406 if (pf->cfe->flags & PCMCIA_CFE_AUDIO) 407 reg |= PCMCIA_CCR_STATUS_AUDIO; 408 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg); 409 410 pcmcia_ccr_write(pf, PCMCIA_CCR_SOCKETCOPY, 0); 411 412 if (pcmcia_mfc(pf->sc)) { 413 long tmp, iosize; 414 415 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase; 416 /* round up to nearest (2^n)-1 */ 417 for (iosize = 1; iosize < tmp; iosize <<= 1) 418 ; 419 iosize--; 420 421 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, 422 pf->pf_mfc_iobase & 0xff); 423 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, 424 (pf->pf_mfc_iobase >> 8) & 0xff); 425 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE2, 0); 426 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE3, 0); 427 428 pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, iosize); 429 } 430 431 DPRINTF(("%s: function %d CCR at %d offset %lx: " 432 "%x %x %x %x, %x %x %x %x, %x\n", 433 pf->sc->dev.dv_xname, pf->number, 434 pf->pf_ccr_window, pf->pf_ccr_offset, 435 pcmcia_ccr_read(pf, 0x00), pcmcia_ccr_read(pf, 0x02), 436 pcmcia_ccr_read(pf, 0x04), pcmcia_ccr_read(pf, 0x06), 437 438 pcmcia_ccr_read(pf, 0x0A), pcmcia_ccr_read(pf, 0x0C), 439 pcmcia_ccr_read(pf, 0x0E), pcmcia_ccr_read(pf, 0x10), 440 441 pcmcia_ccr_read(pf, 0x12))); 442 443 pf->pf_flags |= PFF_ENABLED; 444 return (0); 445 446 bad: 447 /* 448 * Decrement the reference count, and power down the socket, if 449 * necessary. 450 */ 451 if (--pf->sc->sc_enabled_count == 0) 452 pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch); 453 DPRINTF(("%s: --enabled_count = %d\n", pf->sc->dev.dv_xname, 454 pf->sc->sc_enabled_count)); 455 456 return (1); 457 } 458 459 /* Disable PCMCIA function. */ 460 void 461 pcmcia_function_disable(pf) 462 struct pcmcia_function *pf; 463 { 464 struct pcmcia_function *tmp; 465 466 if (pf->cfe == NULL) 467 panic("pcmcia_function_enable: function not initialized"); 468 469 if ((pf->pf_flags & PFF_ENABLED) == 0) { 470 /* 471 * Don't do anything if we're already disabled. 472 */ 473 return; 474 } 475 476 /* 477 * it's possible for different functions' CCRs to be in the same 478 * underlying page. Check for that. Note we mark us as disabled 479 * first to avoid matching ourself. 480 */ 481 482 pf->pf_flags &= ~PFF_ENABLED; 483 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 484 tmp = tmp->pf_list.sqe_next) { 485 if ((tmp->pf_flags & PFF_ENABLED) && 486 (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) && 487 ((pf->ccr_base + PCMCIA_CCR_SIZE) <= 488 (tmp->ccr_base - tmp->pf_ccr_offset + tmp->pf_ccr_realsize))) 489 break; 490 } 491 492 /* Not used by anyone else; unmap the CCR. */ 493 if (tmp == NULL) { 494 pcmcia_mem_unmap(pf, pf->pf_ccr_window); 495 pcmcia_mem_free(pf, &pf->pf_pcmh); 496 } 497 498 /* 499 * Decrement the reference count, and power down the socket, if 500 * necessary. 501 */ 502 if (--pf->sc->sc_enabled_count == 0) 503 pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch); 504 DPRINTF(("%s: --enabled_count = %d\n", pf->sc->dev.dv_xname, 505 pf->sc->sc_enabled_count)); 506 } 507 508 int 509 pcmcia_io_map(pf, width, offset, size, pcihp, windowp) 510 struct pcmcia_function *pf; 511 int width; 512 bus_addr_t offset; 513 bus_size_t size; 514 struct pcmcia_io_handle *pcihp; 515 int *windowp; 516 { 517 int reg; 518 519 if (pcmcia_chip_io_map(pf->sc->pct, pf->sc->pch, 520 width, offset, size, pcihp, windowp)) 521 return (1); 522 523 /* 524 * XXX in the multifunction multi-iospace-per-function case, this 525 * needs to cooperate with io_alloc to make sure that the spaces 526 * don't overlap, and that the ccr's are set correctly 527 */ 528 529 if (pcmcia_mfc(pf->sc)) { 530 long tmp, iosize; 531 532 if (pf->pf_mfc_iomax == 0) { 533 pf->pf_mfc_iobase = pcihp->addr + offset; 534 pf->pf_mfc_iomax = pf->pf_mfc_iobase + size; 535 } else { 536 /* this makes the assumption that nothing overlaps */ 537 if (pf->pf_mfc_iobase > pcihp->addr + offset) 538 pf->pf_mfc_iobase = pcihp->addr + offset; 539 if (pf->pf_mfc_iomax < pcihp->addr + offset + size) 540 pf->pf_mfc_iomax = pcihp->addr + offset + size; 541 } 542 543 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase; 544 /* round up to nearest (2^n)-1 */ 545 for (iosize = 1; iosize >= tmp; iosize <<= 1) 546 ; 547 iosize--; 548 549 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, 550 pf->pf_mfc_iobase & 0xff); 551 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, 552 (pf->pf_mfc_iobase >> 8) & 0xff); 553 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE2, 0); 554 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE3, 0); 555 556 pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, iosize); 557 558 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 559 reg |= PCMCIA_CCR_OPTION_ADDR_DECODE; 560 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 561 } 562 return (0); 563 } 564 565 void * 566 pcmcia_intr_establish(pf, ipl, ih_fct, ih_arg) 567 struct pcmcia_function *pf; 568 int ipl; 569 int (*ih_fct) __P((void *)); 570 void *ih_arg; 571 { 572 void *ret; 573 574 /* behave differently if this is a multifunction card */ 575 576 if (pcmcia_mfc(pf->sc)) { 577 int s, ihcnt, hiipl, reg; 578 struct pcmcia_function *pf2; 579 580 /* 581 * mask all the ipl's which are already used by this card, 582 * and find the highest ipl number (lowest priority) 583 */ 584 585 ihcnt = 0; 586 s = 0; /* this is only here to keep the compiler 587 happy */ 588 hiipl = 0; /* this is only here to keep the compiler 589 happy */ 590 591 for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL; 592 pf2 = pf2->pf_list.sqe_next) { 593 if (pf2->ih_fct) { 594 DPRINTF(("%s: function %d has ih_fct %p\n", 595 pf->sc->dev.dv_xname, pf2->number, 596 pf2->ih_fct)); 597 598 if (ihcnt == 0) { 599 hiipl = pf2->ih_ipl; 600 } else { 601 if (pf2->ih_ipl > hiipl) 602 hiipl = pf2->ih_ipl; 603 } 604 605 ihcnt++; 606 } 607 } 608 609 /* 610 * establish the real interrupt, changing the ipl if 611 * necessary 612 */ 613 614 if (ihcnt == 0) { 615 #ifdef DIAGNOSTIC 616 if (pf->sc->ih != NULL) 617 panic("card has intr handler, but no function does"); 618 #endif 619 s = splhigh(); 620 621 /* set up the handler for the new function */ 622 623 pf->ih_fct = ih_fct; 624 pf->ih_arg = ih_arg; 625 pf->ih_ipl = ipl; 626 627 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 628 pf->sc->pch, pf, ipl, pcmcia_card_intr, pf->sc); 629 splx(s); 630 } else if (ipl > hiipl) { 631 #ifdef DIAGNOSTIC 632 if (pf->sc->ih == NULL) 633 panic("functions have ih, but the card does not"); 634 #endif 635 636 /* XXX need #ifdef for splserial on x86 */ 637 s = splhigh(); 638 639 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 640 pf->sc->ih); 641 642 /* set up the handler for the new function */ 643 pf->ih_fct = ih_fct; 644 pf->ih_arg = ih_arg; 645 pf->ih_ipl = ipl; 646 647 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 648 pf->sc->pch, pf, ipl, pcmcia_card_intr, pf->sc); 649 650 splx(s); 651 } else { 652 s = splhigh(); 653 654 /* set up the handler for the new function */ 655 656 pf->ih_fct = ih_fct; 657 pf->ih_arg = ih_arg; 658 pf->ih_ipl = ipl; 659 660 splx(s); 661 } 662 663 ret = pf->sc->ih; 664 665 if (ret != NULL) { 666 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 667 reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE; 668 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 669 670 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 671 reg |= PCMCIA_CCR_STATUS_INTRACK; 672 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg); 673 } 674 } else { 675 ret = pcmcia_chip_intr_establish(pf->sc->pct, pf->sc->pch, 676 pf, ipl, ih_fct, ih_arg); 677 } 678 679 return (ret); 680 } 681 682 void 683 pcmcia_intr_disestablish(pf, ih) 684 struct pcmcia_function *pf; 685 void *ih; 686 { 687 /* behave differently if this is a multifunction card */ 688 689 if (pcmcia_mfc(pf->sc)) { 690 int s, ihcnt, hiipl; 691 struct pcmcia_function *pf2; 692 693 /* 694 * mask all the ipl's which are already used by this card, 695 * and find the highest ipl number (lowest priority). Skip 696 * the current function. 697 */ 698 699 ihcnt = 0; 700 s = 0; /* this is only here to keep the compipler 701 happy */ 702 hiipl = 0; /* this is only here to keep the compipler 703 happy */ 704 705 for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL; 706 pf2 = pf2->pf_list.sqe_next) { 707 if (pf2 == pf) 708 continue; 709 710 if (pf2->ih_fct) { 711 if (ihcnt == 0) { 712 hiipl = pf2->ih_ipl; 713 } else { 714 if (pf2->ih_ipl > hiipl) 715 hiipl = pf2->ih_ipl; 716 } 717 ihcnt++; 718 } 719 } 720 721 /* 722 * if the ih being removed is lower priority than the lowest 723 * priority remaining interrupt, up the priority. 724 */ 725 726 /* ihcnt is the number of interrupt handlers *not* including 727 the one about to be removed. */ 728 729 if (ihcnt == 0) { 730 int reg; 731 732 #ifdef DIAGNOSTIC 733 if (pf->sc->ih == NULL) 734 panic("disestablishing last function, but card has no ih"); 735 #endif 736 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 737 pf->sc->ih); 738 739 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 740 reg &= ~PCMCIA_CCR_OPTION_IREQ_ENABLE; 741 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 742 743 pf->ih_fct = NULL; 744 pf->ih_arg = NULL; 745 746 pf->sc->ih = NULL; 747 } else if (pf->ih_ipl > hiipl) { 748 #ifdef DIAGNOSTIC 749 if (pf->sc->ih == NULL) 750 panic("changing ih ipl, but card has no ih"); 751 #endif 752 /* XXX need #ifdef for splserial on x86 */ 753 s = splhigh(); 754 755 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 756 pf->sc->ih); 757 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 758 pf->sc->pch, pf, hiipl, pcmcia_card_intr, pf->sc); 759 760 /* null out the handler for this function */ 761 762 pf->ih_fct = NULL; 763 pf->ih_arg = NULL; 764 765 splx(s); 766 } else { 767 s = splhigh(); 768 769 pf->ih_fct = NULL; 770 pf->ih_arg = NULL; 771 772 splx(s); 773 } 774 } else { 775 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, ih); 776 } 777 } 778 779 int 780 pcmcia_card_intr(arg) 781 void *arg; 782 { 783 struct pcmcia_softc *sc = arg; 784 struct pcmcia_function *pf; 785 int reg, ret, ret2; 786 787 ret = 0; 788 789 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 790 pf = pf->pf_list.sqe_next) { 791 #if 0 792 printf("%s: intr flags=%x fct=%d physaddr=%lx cor=%02x csr=%02x pin=%02x", 793 sc->dev.dv_xname, pf->pf_flags, pf->number, 794 pmap_extract(pmap_kernel(), 795 (vm_offset_t) pf->pf_ccrh) + pf->pf_ccr_offset, 796 pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION), 797 pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS), 798 pcmcia_ccr_read(pf, PCMCIA_CCR_PIN)); 799 #endif 800 if (pf->ih_fct != NULL && 801 (pf->ccr_mask & (1 << (PCMCIA_CCR_STATUS / 2)))) { 802 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 803 if (reg & PCMCIA_CCR_STATUS_INTR) { 804 ret2 = (*pf->ih_fct)(pf->ih_arg); 805 if (ret2 != 0 && ret == 0) 806 ret = ret2; 807 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 808 #if 0 809 printf("; csr %02x->%02x", 810 reg, reg & ~PCMCIA_CCR_STATUS_INTR); 811 #endif 812 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, 813 reg & ~PCMCIA_CCR_STATUS_INTR); 814 } 815 } 816 #if 0 817 printf("\n"); 818 #endif 819 } 820 821 return (ret); 822 } 823
Indexes created Fri Sep 26 08:10:20 GMT 2025