pcmcia.c revision 1.6
1 /* $NetBSD: pcmcia.c,v 1.6 1998/03/07 17:58:17 christos 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; 278 279 /* 280 * set the iftype to memory if this card has no functions (not yet 281 * probed), or only one function, and that is memory. 282 */ 283 if (sc->card.pf_head.sqh_first == NULL || 284 (sc->card.pf_head.sqh_first != NULL && 285 sc->card.pf_head.sqh_first->pf_list.sqe_next == NULL && 286 (sc->card.pf_head.sqh_first->cfe_head.sqh_first->iftype == 287 PCMCIA_IFTYPE_MEMORY))) 288 return (PCMCIA_IFTYPE_MEMORY); 289 else 290 return (PCMCIA_IFTYPE_IO); 291 } 292 293 /* 294 * Initialize a PCMCIA function. May be called as long as the function is 295 * disabled. 296 */ 297 void 298 pcmcia_function_init(pf, cfe) 299 struct pcmcia_function *pf; 300 struct pcmcia_config_entry *cfe; 301 { 302 if (pf->pf_flags & PFF_ENABLED) 303 panic("pcmcia_function_init: function is enabled"); 304 305 /* Remember which configuration entry we are using. */ 306 pf->cfe = cfe; 307 } 308 309 static inline void pcmcia_socket_enable(pct, pch) 310 pcmcia_chipset_tag_t pct; 311 pcmcia_chipset_handle_t *pch; 312 { 313 pcmcia_chip_socket_enable(pct, pch); 314 } 315 316 static inline void pcmcia_socket_disable(pct, pch) 317 pcmcia_chipset_tag_t pct; 318 pcmcia_chipset_handle_t *pch; 319 { 320 pcmcia_chip_socket_disable(pct, pch); 321 } 322 323 /* Enable a PCMCIA function */ 324 int 325 pcmcia_function_enable(pf) 326 struct pcmcia_function *pf; 327 { 328 struct pcmcia_function *tmp; 329 int reg; 330 331 if (pf->cfe == NULL) 332 panic("pcmcia_function_enable: function not initialized"); 333 334 /* 335 * Increase the reference count on the socket, enabling power, if 336 * necessary. 337 */ 338 if (pf->sc->sc_enabled_count++ == 0) 339 pcmcia_chip_socket_enable(pf->sc->pct, pf->sc->pch); 340 DPRINTF(("%s: ++enabled_count = %d\n", pf->sc->dev.dv_xname, 341 pf->sc->sc_enabled_count)); 342 343 if (pf->pf_flags & PFF_ENABLED) { 344 /* 345 * Don't do anything if we're already enabled. 346 */ 347 return (0); 348 } 349 350 /* 351 * it's possible for different functions' CCRs to be in the same 352 * underlying page. Check for that. 353 */ 354 355 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 356 tmp = tmp->pf_list.sqe_next) { 357 if ((tmp->pf_flags & PFF_ENABLED) && 358 (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) && 359 ((pf->ccr_base + PCMCIA_CCR_SIZE) <= 360 (tmp->ccr_base - tmp->pf_ccr_offset + 361 tmp->pf_ccr_realsize))) { 362 pf->pf_ccrt = tmp->pf_ccrt; 363 pf->pf_ccrh = tmp->pf_ccrh; 364 pf->pf_ccr_realsize = tmp->pf_ccr_realsize; 365 366 /* 367 * pf->pf_ccr_offset = (tmp->pf_ccr_offset - 368 * tmp->ccr_base) + pf->ccr_base; 369 */ 370 pf->pf_ccr_offset = 371 (tmp->pf_ccr_offset + pf->ccr_base) - 372 tmp->ccr_base; 373 pf->pf_ccr_window = tmp->pf_ccr_window; 374 break; 375 } 376 } 377 378 if (tmp == NULL) { 379 if (pcmcia_mem_alloc(pf, PCMCIA_CCR_SIZE, &pf->pf_pcmh)) 380 goto bad; 381 382 if (pcmcia_mem_map(pf, PCMCIA_MEM_ATTR, pf->ccr_base, 383 PCMCIA_CCR_SIZE, &pf->pf_pcmh, &pf->pf_ccr_offset, 384 &pf->pf_ccr_window)) { 385 pcmcia_mem_free(pf, &pf->pf_pcmh); 386 goto bad; 387 } 388 } 389 390 reg = (pf->cfe->number & PCMCIA_CCR_OPTION_CFINDEX); 391 reg |= PCMCIA_CCR_OPTION_LEVIREQ; 392 if (pcmcia_mfc(pf->sc)) { 393 reg |= (PCMCIA_CCR_OPTION_FUNC_ENABLE | 394 PCMCIA_CCR_OPTION_ADDR_DECODE); 395 if (pf->ih_fct) 396 reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE; 397 398 } 399 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 400 401 reg = 0; 402 403 if ((pf->cfe->flags & PCMCIA_CFE_IO16) == 0) 404 reg |= PCMCIA_CCR_STATUS_IOIS8; 405 if (pf->cfe->flags & PCMCIA_CFE_AUDIO) 406 reg |= PCMCIA_CCR_STATUS_AUDIO; 407 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg); 408 409 pcmcia_ccr_write(pf, PCMCIA_CCR_SOCKETCOPY, 0); 410 411 if (pcmcia_mfc(pf->sc)) { 412 long tmp, iosize; 413 414 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase; 415 /* round up to nearest (2^n)-1 */ 416 for (iosize = 1; iosize < tmp; iosize <<= 1) 417 ; 418 iosize--; 419 420 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, 421 pf->pf_mfc_iobase & 0xff); 422 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, 423 (pf->pf_mfc_iobase >> 8) & 0xff); 424 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE2, 0); 425 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE3, 0); 426 427 pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, iosize); 428 } 429 430 DPRINTF(("%s: function %d CCR at %d offset %lx: " 431 "%x %x %x %x, %x %x %x %x, %x\n", 432 pf->sc->dev.dv_xname, pf->number, 433 pf->pf_ccr_window, pf->pf_ccr_offset, 434 pcmcia_ccr_read(pf, 0x00), pcmcia_ccr_read(pf, 0x02), 435 pcmcia_ccr_read(pf, 0x04), pcmcia_ccr_read(pf, 0x06), 436 437 pcmcia_ccr_read(pf, 0x0A), pcmcia_ccr_read(pf, 0x0C), 438 pcmcia_ccr_read(pf, 0x0E), pcmcia_ccr_read(pf, 0x10), 439 440 pcmcia_ccr_read(pf, 0x12))); 441 442 pf->pf_flags |= PFF_ENABLED; 443 return (0); 444 445 bad: 446 /* 447 * Decrement the reference count, and power down the socket, if 448 * necessary. 449 */ 450 if (--pf->sc->sc_enabled_count == 0) 451 pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch); 452 DPRINTF(("%s: --enabled_count = %d\n", pf->sc->dev.dv_xname, 453 pf->sc->sc_enabled_count)); 454 455 return (1); 456 } 457 458 /* Disable PCMCIA function. */ 459 void 460 pcmcia_function_disable(pf) 461 struct pcmcia_function *pf; 462 { 463 struct pcmcia_function *tmp; 464 465 if (pf->cfe == NULL) 466 panic("pcmcia_function_enable: function not initialized"); 467 468 if ((pf->pf_flags & PFF_ENABLED) == 0) { 469 /* 470 * Don't do anything if we're already disabled. 471 */ 472 return; 473 } 474 475 /* 476 * it's possible for different functions' CCRs to be in the same 477 * underlying page. Check for that. Note we mark us as disabled 478 * first to avoid matching ourself. 479 */ 480 481 pf->pf_flags &= ~PFF_ENABLED; 482 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 483 tmp = tmp->pf_list.sqe_next) { 484 if ((tmp->pf_flags & PFF_ENABLED) && 485 (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) && 486 ((pf->ccr_base + PCMCIA_CCR_SIZE) <= 487 (tmp->ccr_base - tmp->pf_ccr_offset + tmp->pf_ccr_realsize))) 488 break; 489 } 490 491 /* Not used by anyone else; unmap the CCR. */ 492 if (tmp == NULL) { 493 pcmcia_mem_unmap(pf, pf->pf_ccr_window); 494 pcmcia_mem_free(pf, &pf->pf_pcmh); 495 } 496 497 /* 498 * Decrement the reference count, and power down the socket, if 499 * necessary. 500 */ 501 if (--pf->sc->sc_enabled_count == 0) 502 pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch); 503 DPRINTF(("%s: --enabled_count = %d\n", pf->sc->dev.dv_xname, 504 pf->sc->sc_enabled_count)); 505 } 506 507 int 508 pcmcia_io_map(pf, width, offset, size, pcihp, windowp) 509 struct pcmcia_function *pf; 510 int width; 511 bus_addr_t offset; 512 bus_size_t size; 513 struct pcmcia_io_handle *pcihp; 514 int *windowp; 515 { 516 int reg; 517 518 if (pcmcia_chip_io_map(pf->sc->pct, pf->sc->pch, 519 width, offset, size, pcihp, windowp)) 520 return (1); 521 522 /* 523 * XXX in the multifunction multi-iospace-per-function case, this 524 * needs to cooperate with io_alloc to make sure that the spaces 525 * don't overlap, and that the ccr's are set correctly 526 */ 527 528 if (pcmcia_mfc(pf->sc)) { 529 long tmp, iosize; 530 531 if (pf->pf_mfc_iomax == 0) { 532 pf->pf_mfc_iobase = pcihp->addr + offset; 533 pf->pf_mfc_iomax = pf->pf_mfc_iobase + size; 534 } else { 535 /* this makes the assumption that nothing overlaps */ 536 if (pf->pf_mfc_iobase > pcihp->addr + offset) 537 pf->pf_mfc_iobase = pcihp->addr + offset; 538 if (pf->pf_mfc_iomax < pcihp->addr + offset + size) 539 pf->pf_mfc_iomax = pcihp->addr + offset + size; 540 } 541 542 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase; 543 /* round up to nearest (2^n)-1 */ 544 for (iosize = 1; iosize >= tmp; iosize <<= 1) 545 ; 546 iosize--; 547 548 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, 549 pf->pf_mfc_iobase & 0xff); 550 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, 551 (pf->pf_mfc_iobase >> 8) & 0xff); 552 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE2, 0); 553 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE3, 0); 554 555 pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, iosize); 556 557 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 558 reg |= PCMCIA_CCR_OPTION_ADDR_DECODE; 559 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 560 } 561 return (0); 562 } 563 564 void * 565 pcmcia_intr_establish(pf, ipl, ih_fct, ih_arg) 566 struct pcmcia_function *pf; 567 int ipl; 568 int (*ih_fct) __P((void *)); 569 void *ih_arg; 570 { 571 void *ret; 572 573 /* behave differently if this is a multifunction card */ 574 575 if (pcmcia_mfc(pf->sc)) { 576 int s, ihcnt, hiipl, reg; 577 struct pcmcia_function *pf2; 578 579 /* 580 * mask all the ipl's which are already used by this card, 581 * and find the highest ipl number (lowest priority) 582 */ 583 584 ihcnt = 0; 585 s = 0; /* this is only here to keep the compiler 586 happy */ 587 hiipl = 0; /* this is only here to keep the compiler 588 happy */ 589 590 for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL; 591 pf2 = pf2->pf_list.sqe_next) { 592 if (pf2->ih_fct) { 593 DPRINTF(("%s: function %d has ih_fct %p\n", 594 pf->sc->dev.dv_xname, pf2->number, 595 pf2->ih_fct)); 596 597 if (ihcnt == 0) { 598 hiipl = pf2->ih_ipl; 599 } else { 600 if (pf2->ih_ipl > hiipl) 601 hiipl = pf2->ih_ipl; 602 } 603 604 ihcnt++; 605 } 606 } 607 608 /* 609 * establish the real interrupt, changing the ipl if 610 * necessary 611 */ 612 613 if (ihcnt == 0) { 614 #ifdef DIAGNOSTIC 615 if (pf->sc->ih != NULL) 616 panic("card has intr handler, but no function does"); 617 #endif 618 s = splhigh(); 619 620 /* set up the handler for the new function */ 621 622 pf->ih_fct = ih_fct; 623 pf->ih_arg = ih_arg; 624 pf->ih_ipl = ipl; 625 626 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 627 pf->sc->pch, pf, ipl, pcmcia_card_intr, pf->sc); 628 splx(s); 629 } else if (ipl > hiipl) { 630 #ifdef DIAGNOSTIC 631 if (pf->sc->ih == NULL) 632 panic("functions have ih, but the card does not"); 633 #endif 634 635 /* XXX need #ifdef for splserial on x86 */ 636 s = splhigh(); 637 638 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 639 pf->sc->ih); 640 641 /* set up the handler for the new function */ 642 pf->ih_fct = ih_fct; 643 pf->ih_arg = ih_arg; 644 pf->ih_ipl = ipl; 645 646 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 647 pf->sc->pch, pf, ipl, pcmcia_card_intr, pf->sc); 648 649 splx(s); 650 } else { 651 s = splhigh(); 652 653 /* set up the handler for the new function */ 654 655 pf->ih_fct = ih_fct; 656 pf->ih_arg = ih_arg; 657 pf->ih_ipl = ipl; 658 659 splx(s); 660 } 661 662 ret = pf->sc->ih; 663 664 if (ret != NULL) { 665 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 666 reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE; 667 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 668 669 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 670 reg |= PCMCIA_CCR_STATUS_INTRACK; 671 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg); 672 } 673 } else { 674 ret = pcmcia_chip_intr_establish(pf->sc->pct, pf->sc->pch, 675 pf, ipl, ih_fct, ih_arg); 676 } 677 678 return (ret); 679 } 680 681 void 682 pcmcia_intr_disestablish(pf, ih) 683 struct pcmcia_function *pf; 684 void *ih; 685 { 686 /* behave differently if this is a multifunction card */ 687 688 if (pcmcia_mfc(pf->sc)) { 689 int s, ihcnt, hiipl; 690 struct pcmcia_function *pf2; 691 692 /* 693 * mask all the ipl's which are already used by this card, 694 * and find the highest ipl number (lowest priority). Skip 695 * the current function. 696 */ 697 698 ihcnt = 0; 699 s = 0; /* this is only here to keep the compipler 700 happy */ 701 hiipl = 0; /* this is only here to keep the compipler 702 happy */ 703 704 for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL; 705 pf2 = pf2->pf_list.sqe_next) { 706 if (pf2 == pf) 707 continue; 708 709 if (pf2->ih_fct) { 710 if (ihcnt == 0) { 711 hiipl = pf2->ih_ipl; 712 } else { 713 if (pf2->ih_ipl > hiipl) 714 hiipl = pf2->ih_ipl; 715 } 716 ihcnt++; 717 } 718 } 719 720 /* 721 * if the ih being removed is lower priority than the lowest 722 * priority remaining interrupt, up the priority. 723 */ 724 725 /* ihcnt is the number of interrupt handlers *not* including 726 the one about to be removed. */ 727 728 if (ihcnt == 0) { 729 int reg; 730 731 #ifdef DIAGNOSTIC 732 if (pf->sc->ih == NULL) 733 panic("disestablishing last function, but card has no ih"); 734 #endif 735 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 736 pf->sc->ih); 737 738 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 739 reg &= ~PCMCIA_CCR_OPTION_IREQ_ENABLE; 740 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 741 742 pf->ih_fct = NULL; 743 pf->ih_arg = NULL; 744 745 pf->sc->ih = NULL; 746 } else if (pf->ih_ipl > hiipl) { 747 #ifdef DIAGNOSTIC 748 if (pf->sc->ih == NULL) 749 panic("changing ih ipl, but card has no ih"); 750 #endif 751 /* XXX need #ifdef for splserial on x86 */ 752 s = splhigh(); 753 754 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 755 pf->sc->ih); 756 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 757 pf->sc->pch, pf, hiipl, pcmcia_card_intr, pf->sc); 758 759 /* null out the handler for this function */ 760 761 pf->ih_fct = NULL; 762 pf->ih_arg = NULL; 763 764 splx(s); 765 } else { 766 s = splhigh(); 767 768 pf->ih_fct = NULL; 769 pf->ih_arg = NULL; 770 771 splx(s); 772 } 773 } else { 774 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, ih); 775 } 776 } 777 778 int 779 pcmcia_card_intr(arg) 780 void *arg; 781 { 782 struct pcmcia_softc *sc = arg; 783 struct pcmcia_function *pf; 784 int reg, ret, ret2; 785 786 ret = 0; 787 788 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 789 pf = pf->pf_list.sqe_next) { 790 #if 0 791 printf("%s: intr flags=%x fct=%d physaddr=%lx cor=%02x csr=%02x pin=%02x", 792 sc->dev.dv_xname, pf->pf_flags, pf->number, 793 pmap_extract(pmap_kernel(), 794 (vm_offset_t) pf->pf_ccrh) + pf->pf_ccr_offset, 795 pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION), 796 pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS), 797 pcmcia_ccr_read(pf, PCMCIA_CCR_PIN)); 798 #endif 799 if (pf->ih_fct != NULL && 800 (pf->ccr_mask & (1 << (PCMCIA_CCR_STATUS / 2)))) { 801 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 802 if (reg & PCMCIA_CCR_STATUS_INTR) { 803 ret2 = (*pf->ih_fct)(pf->ih_arg); 804 if (ret2 != 0 && ret == 0) 805 ret = ret2; 806 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 807 #if 0 808 printf("; csr %02x->%02x", 809 reg, reg & ~PCMCIA_CCR_STATUS_INTR); 810 #endif 811 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, 812 reg & ~PCMCIA_CCR_STATUS_INTR); 813 } 814 } 815 #if 0 816 printf("\n"); 817 #endif 818 } 819 820 return (ret); 821 } 822
Indexes created Fri Sep 26 08:10:20 GMT 2025