pcmcia.c revision 1.15
1 /* $NetBSD: pcmcia.c,v 1.15 2000/01/23 20:44:04 aymeric 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 42 #include <dev/pcmcia/pcmciareg.h> 43 #include <dev/pcmcia/pcmciachip.h> 44 #include <dev/pcmcia/pcmciavar.h> 45 46 #include "locators.h" 47 48 #ifdef PCMCIADEBUG 49 int pcmcia_debug = 0; 50 #define DPRINTF(arg) if (pcmcia_debug) printf arg 51 int pcmciaintr_debug = 0; 52 /* this is done this way to avoid doing lots of conditionals 53 at interrupt level. */ 54 #define PCMCIA_CARD_INTR (pcmciaintr_debug?pcmcia_card_intrdebug:pcmcia_card_intr) 55 #else 56 #define DPRINTF(arg) 57 #define PCMCIA_CARD_INTR (pcmcia_card_intr) 58 #endif 59 60 #ifdef PCMCIAVERBOSE 61 int pcmcia_verbose = 1; 62 #else 63 int pcmcia_verbose = 0; 64 #endif 65 66 int pcmcia_match __P((struct device *, struct cfdata *, void *)); 67 int pcmcia_submatch __P((struct device *, struct cfdata *, void *)); 68 void pcmcia_attach __P((struct device *, struct device *, void *)); 69 int pcmcia_print __P((void *, const char *)); 70 71 static inline void pcmcia_socket_enable __P((pcmcia_chipset_tag_t, 72 pcmcia_chipset_handle_t *)); 73 static inline void pcmcia_socket_disable __P((pcmcia_chipset_tag_t, 74 pcmcia_chipset_handle_t *)); 75 76 int pcmcia_card_intr __P((void *)); 77 #ifdef PCMCIADEBUG 78 int pcmcia_card_intrdebug __P((void *)); 79 #endif 80 81 struct cfattach pcmcia_ca = { 82 sizeof(struct pcmcia_softc), pcmcia_match, pcmcia_attach 83 }; 84 85 int 86 pcmcia_ccr_read(pf, ccr) 87 struct pcmcia_function *pf; 88 int ccr; 89 { 90 91 return (bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh, 92 pf->pf_ccr_offset + ccr)); 93 } 94 95 void 96 pcmcia_ccr_write(pf, ccr, val) 97 struct pcmcia_function *pf; 98 int ccr; 99 int val; 100 { 101 102 if ((pf->ccr_mask) & (1 << (ccr / 2))) { 103 bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh, 104 pf->pf_ccr_offset + ccr, val); 105 } 106 } 107 108 int 109 pcmcia_match(parent, match, aux) 110 struct device *parent; 111 struct cfdata *match; 112 void *aux; 113 { 114 struct pcmciabus_attach_args *paa = aux; 115 116 if (strcmp(paa->paa_busname, match->cf_driver->cd_name)) { 117 return 0; 118 } 119 /* if the autoconfiguration got this far, there's a socket here */ 120 return (1); 121 } 122 123 void 124 pcmcia_attach(parent, self, aux) 125 struct device *parent, *self; 126 void *aux; 127 { 128 struct pcmciabus_attach_args *paa = aux; 129 struct pcmcia_softc *sc = (struct pcmcia_softc *) self; 130 131 printf("\n"); 132 133 sc->pct = paa->pct; 134 sc->pch = paa->pch; 135 sc->iobase = paa->iobase; 136 sc->iosize = paa->iosize; 137 138 sc->ih = NULL; 139 } 140 141 int 142 pcmcia_card_attach(dev) 143 struct device *dev; 144 { 145 struct pcmcia_softc *sc = (struct pcmcia_softc *) dev; 146 struct pcmcia_function *pf; 147 struct pcmcia_attach_args paa; 148 int attached; 149 150 /* 151 * this is here so that when socket_enable calls gettype, trt happens 152 */ 153 sc->card.pf_head.sqh_first = NULL; 154 155 pcmcia_chip_socket_enable(sc->pct, sc->pch); 156 157 pcmcia_read_cis(sc); 158 159 pcmcia_chip_socket_disable(sc->pct, sc->pch); 160 161 pcmcia_check_cis_quirks(sc); 162 163 /* 164 * bail now if the card has no functions, or if there was an error in 165 * the cis. 166 */ 167 168 if (sc->card.error) 169 return (1); 170 if (sc->card.pf_head.sqh_first == NULL) 171 return (1); 172 173 if (pcmcia_verbose) 174 pcmcia_print_cis(sc); 175 176 attached = 0; 177 178 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 179 pf = pf->pf_list.sqe_next) { 180 if (pf->cfe_head.sqh_first == NULL) 181 continue; 182 183 #ifdef DIAGNOSTIC 184 if (pf->child != NULL) { 185 printf("%s: %s still attached to function %d!\n", 186 sc->dev.dv_xname, pf->child->dv_xname, 187 pf->number); 188 panic("pcmcia_card_attach"); 189 } 190 #endif 191 pf->sc = sc; 192 pf->child = NULL; 193 pf->cfe = NULL; 194 pf->ih_fct = NULL; 195 pf->ih_arg = NULL; 196 } 197 198 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 199 pf = pf->pf_list.sqe_next) { 200 if (pf->cfe_head.sqh_first == NULL) 201 continue; 202 203 paa.manufacturer = sc->card.manufacturer; 204 paa.product = sc->card.product; 205 paa.card = &sc->card; 206 paa.pf = pf; 207 208 if ((pf->child = config_found_sm(&sc->dev, &paa, pcmcia_print, 209 pcmcia_submatch)) != NULL) { 210 attached++; 211 212 DPRINTF(("%s: function %d CCR at %d " 213 "offset %lx: %x %x %x %x, %x %x %x %x, %x\n", 214 sc->dev.dv_xname, pf->number, 215 pf->pf_ccr_window, 216 (unsigned long) pf->pf_ccr_offset, 217 pcmcia_ccr_read(pf, 0x00), 218 pcmcia_ccr_read(pf, 0x02), pcmcia_ccr_read(pf, 0x04), 219 pcmcia_ccr_read(pf, 0x06), pcmcia_ccr_read(pf, 0x0A), 220 pcmcia_ccr_read(pf, 0x0C), pcmcia_ccr_read(pf, 0x0E), 221 pcmcia_ccr_read(pf, 0x10), pcmcia_ccr_read(pf, 0x12))); 222 } 223 } 224 225 return (attached ? 0 : 1); 226 } 227 228 void 229 pcmcia_card_detach(dev, flags) 230 struct device *dev; 231 int flags; /* DETACH_* flags */ 232 { 233 struct pcmcia_softc *sc = (struct pcmcia_softc *) dev; 234 struct pcmcia_function *pf; 235 int error; 236 237 /* 238 * We are running on either the PCMCIA socket's event thread 239 * or in user context detaching a device by user request. 240 */ 241 for (pf = SIMPLEQ_FIRST(&sc->card.pf_head); pf != NULL; 242 pf = SIMPLEQ_NEXT(pf, pf_list)) { 243 if (SIMPLEQ_FIRST(&pf->cfe_head) == NULL) 244 continue; 245 if (pf->child == NULL) 246 continue; 247 DPRINTF(("%s: detaching %s (function %d)\n", 248 sc->dev.dv_xname, pf->child->dv_xname, pf->number)); 249 if ((error = config_detach(pf->child, flags)) != 0) { 250 printf("%s: error %d detaching %s (function %d)\n", 251 sc->dev.dv_xname, error, pf->child->dv_xname, 252 pf->number); 253 } else 254 pf->child = NULL; 255 } 256 } 257 258 void 259 pcmcia_card_deactivate(dev) 260 struct device *dev; 261 { 262 struct pcmcia_softc *sc = (struct pcmcia_softc *) dev; 263 struct pcmcia_function *pf; 264 265 /* 266 * We're in the chip's card removal interrupt handler. 267 * Deactivate the child driver. The PCMCIA socket's 268 * event thread will run later to finish the detach. 269 */ 270 for (pf = SIMPLEQ_FIRST(&sc->card.pf_head); pf != NULL; 271 pf = SIMPLEQ_NEXT(pf, pf_list)) { 272 if (SIMPLEQ_FIRST(&pf->cfe_head) == NULL) 273 continue; 274 if (pf->child == NULL) 275 continue; 276 DPRINTF(("%s: deactivating %s (function %d)\n", 277 sc->dev.dv_xname, pf->child->dv_xname, pf->number)); 278 config_deactivate(pf->child); 279 } 280 } 281 282 int 283 pcmcia_submatch(parent, cf, aux) 284 struct device *parent; 285 struct cfdata *cf; 286 void *aux; 287 { 288 struct pcmcia_attach_args *paa = aux; 289 290 if (cf->cf_loc[PCMCIACF_FUNCTION] != PCMCIACF_FUNCTION_DEFAULT && 291 cf->cf_loc[PCMCIACF_FUNCTION] != paa->pf->number) 292 return (0); 293 294 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 295 } 296 297 int 298 pcmcia_print(arg, pnp) 299 void *arg; 300 const char *pnp; 301 { 302 struct pcmcia_attach_args *pa = arg; 303 struct pcmcia_softc *sc = pa->pf->sc; 304 struct pcmcia_card *card = &sc->card; 305 int i; 306 307 if (pnp) { 308 for (i = 0; i < 4; i++) { 309 if (card->cis1_info[i] == NULL) 310 break; 311 if (i) 312 printf(", "); 313 printf("%s", card->cis1_info[i]); 314 } 315 if (i) 316 printf(" "); 317 printf("(manufacturer 0x%x, product 0x%x)", card->manufacturer, 318 card->product); 319 } 320 printf(" function %d", pa->pf->number); 321 322 return (UNCONF); 323 } 324 325 int 326 pcmcia_card_gettype(dev) 327 struct device *dev; 328 { 329 struct pcmcia_softc *sc = (struct pcmcia_softc *)dev; 330 struct pcmcia_function *pf; 331 332 /* 333 * set the iftype to memory if this card has no functions (not yet 334 * probed), or only one function, and that is not initialized yet or 335 * that is memory. 336 */ 337 pf = SIMPLEQ_FIRST(&sc->card.pf_head); 338 if (pf == NULL || 339 (SIMPLEQ_NEXT(pf, pf_list) == NULL && 340 (pf->cfe == NULL || pf->cfe->iftype == PCMCIA_IFTYPE_MEMORY))) 341 return (PCMCIA_IFTYPE_MEMORY); 342 else 343 return (PCMCIA_IFTYPE_IO); 344 } 345 346 /* 347 * Initialize a PCMCIA function. May be called as long as the function is 348 * disabled. 349 */ 350 void 351 pcmcia_function_init(pf, cfe) 352 struct pcmcia_function *pf; 353 struct pcmcia_config_entry *cfe; 354 { 355 if (pf->pf_flags & PFF_ENABLED) 356 panic("pcmcia_function_init: function is enabled"); 357 358 /* Remember which configuration entry we are using. */ 359 pf->cfe = cfe; 360 } 361 362 static inline void pcmcia_socket_enable(pct, pch) 363 pcmcia_chipset_tag_t pct; 364 pcmcia_chipset_handle_t *pch; 365 { 366 pcmcia_chip_socket_enable(pct, pch); 367 } 368 369 static inline void pcmcia_socket_disable(pct, pch) 370 pcmcia_chipset_tag_t pct; 371 pcmcia_chipset_handle_t *pch; 372 { 373 pcmcia_chip_socket_disable(pct, pch); 374 } 375 376 /* Enable a PCMCIA function */ 377 int 378 pcmcia_function_enable(pf) 379 struct pcmcia_function *pf; 380 { 381 struct pcmcia_function *tmp; 382 int reg; 383 384 if (pf->cfe == NULL) 385 panic("pcmcia_function_enable: function not initialized"); 386 387 /* 388 * Increase the reference count on the socket, enabling power, if 389 * necessary. 390 */ 391 if (pf->sc->sc_enabled_count++ == 0) 392 pcmcia_chip_socket_enable(pf->sc->pct, pf->sc->pch); 393 DPRINTF(("%s: ++enabled_count = %d\n", pf->sc->dev.dv_xname, 394 pf->sc->sc_enabled_count)); 395 396 if (pf->pf_flags & PFF_ENABLED) { 397 /* 398 * Don't do anything if we're already enabled. 399 */ 400 return (0); 401 } 402 403 /* 404 * it's possible for different functions' CCRs to be in the same 405 * underlying page. Check for that. 406 */ 407 408 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 409 tmp = tmp->pf_list.sqe_next) { 410 if ((tmp->pf_flags & PFF_ENABLED) && 411 (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) && 412 ((pf->ccr_base + PCMCIA_CCR_SIZE) <= 413 (tmp->ccr_base - tmp->pf_ccr_offset + 414 tmp->pf_ccr_realsize))) { 415 pf->pf_ccrt = tmp->pf_ccrt; 416 pf->pf_ccrh = tmp->pf_ccrh; 417 pf->pf_ccr_realsize = tmp->pf_ccr_realsize; 418 419 /* 420 * pf->pf_ccr_offset = (tmp->pf_ccr_offset - 421 * tmp->ccr_base) + pf->ccr_base; 422 */ 423 pf->pf_ccr_offset = 424 (tmp->pf_ccr_offset + pf->ccr_base) - 425 tmp->ccr_base; 426 pf->pf_ccr_window = tmp->pf_ccr_window; 427 break; 428 } 429 } 430 431 if (tmp == NULL) { 432 if (pcmcia_mem_alloc(pf, PCMCIA_CCR_SIZE, &pf->pf_pcmh)) 433 goto bad; 434 435 if (pcmcia_mem_map(pf, PCMCIA_MEM_ATTR, pf->ccr_base, 436 PCMCIA_CCR_SIZE, &pf->pf_pcmh, &pf->pf_ccr_offset, 437 &pf->pf_ccr_window)) { 438 pcmcia_mem_free(pf, &pf->pf_pcmh); 439 goto bad; 440 } 441 } 442 443 reg = (pf->cfe->number & PCMCIA_CCR_OPTION_CFINDEX); 444 reg |= PCMCIA_CCR_OPTION_LEVIREQ; 445 if (pcmcia_mfc(pf->sc)) { 446 reg |= (PCMCIA_CCR_OPTION_FUNC_ENABLE | 447 PCMCIA_CCR_OPTION_ADDR_DECODE); 448 if (pf->ih_fct) 449 reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE; 450 451 } 452 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 453 454 reg = 0; 455 456 if ((pf->cfe->flags & PCMCIA_CFE_IO16) == 0) 457 reg |= PCMCIA_CCR_STATUS_IOIS8; 458 if (pf->cfe->flags & PCMCIA_CFE_AUDIO) 459 reg |= PCMCIA_CCR_STATUS_AUDIO; 460 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg); 461 462 pcmcia_ccr_write(pf, PCMCIA_CCR_SOCKETCOPY, 0); 463 464 if (pcmcia_mfc(pf->sc)) { 465 long tmp, iosize; 466 467 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase; 468 /* round up to nearest (2^n)-1 */ 469 for (iosize = 1; iosize < tmp; iosize <<= 1) 470 ; 471 iosize--; 472 473 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, 474 pf->pf_mfc_iobase & 0xff); 475 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, 476 (pf->pf_mfc_iobase >> 8) & 0xff); 477 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE2, 0); 478 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE3, 0); 479 480 pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, iosize); 481 } 482 483 #ifdef PCMCIADEBUG 484 if (pcmcia_debug) { 485 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 486 tmp = tmp->pf_list.sqe_next) { 487 printf("%s: function %d CCR at %d offset %lx: " 488 "%x %x %x %x, %x %x %x %x, %x\n", 489 tmp->sc->dev.dv_xname, tmp->number, 490 tmp->pf_ccr_window, 491 (unsigned long) tmp->pf_ccr_offset, 492 pcmcia_ccr_read(tmp, 0x00), 493 pcmcia_ccr_read(tmp, 0x02), 494 pcmcia_ccr_read(tmp, 0x04), 495 pcmcia_ccr_read(tmp, 0x06), 496 497 pcmcia_ccr_read(tmp, 0x0A), 498 pcmcia_ccr_read(tmp, 0x0C), 499 pcmcia_ccr_read(tmp, 0x0E), 500 pcmcia_ccr_read(tmp, 0x10), 501 502 pcmcia_ccr_read(tmp, 0x12)); 503 } 504 } 505 #endif 506 507 pf->pf_flags |= PFF_ENABLED; 508 return (0); 509 510 bad: 511 /* 512 * Decrement the reference count, and power down the socket, if 513 * necessary. 514 */ 515 if (--pf->sc->sc_enabled_count == 0) 516 pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch); 517 DPRINTF(("%s: --enabled_count = %d\n", pf->sc->dev.dv_xname, 518 pf->sc->sc_enabled_count)); 519 520 return (1); 521 } 522 523 /* Disable PCMCIA function. */ 524 void 525 pcmcia_function_disable(pf) 526 struct pcmcia_function *pf; 527 { 528 struct pcmcia_function *tmp; 529 530 if (pf->cfe == NULL) 531 panic("pcmcia_function_enable: function not initialized"); 532 533 if ((pf->pf_flags & PFF_ENABLED) == 0) { 534 /* 535 * Don't do anything if we're already disabled. 536 */ 537 return; 538 } 539 540 /* 541 * it's possible for different functions' CCRs to be in the same 542 * underlying page. Check for that. Note we mark us as disabled 543 * first to avoid matching ourself. 544 */ 545 546 pf->pf_flags &= ~PFF_ENABLED; 547 for (tmp = pf->sc->card.pf_head.sqh_first; tmp != NULL; 548 tmp = tmp->pf_list.sqe_next) { 549 if ((tmp->pf_flags & PFF_ENABLED) && 550 (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) && 551 ((pf->ccr_base + PCMCIA_CCR_SIZE) <= 552 (tmp->ccr_base - tmp->pf_ccr_offset + tmp->pf_ccr_realsize))) 553 break; 554 } 555 556 /* Not used by anyone else; unmap the CCR. */ 557 if (tmp == NULL) { 558 pcmcia_mem_unmap(pf, pf->pf_ccr_window); 559 pcmcia_mem_free(pf, &pf->pf_pcmh); 560 } 561 562 /* 563 * Decrement the reference count, and power down the socket, if 564 * necessary. 565 */ 566 if (--pf->sc->sc_enabled_count == 0) 567 pcmcia_chip_socket_disable(pf->sc->pct, pf->sc->pch); 568 DPRINTF(("%s: --enabled_count = %d\n", pf->sc->dev.dv_xname, 569 pf->sc->sc_enabled_count)); 570 } 571 572 int 573 pcmcia_io_map(pf, width, offset, size, pcihp, windowp) 574 struct pcmcia_function *pf; 575 int width; 576 bus_addr_t offset; 577 bus_size_t size; 578 struct pcmcia_io_handle *pcihp; 579 int *windowp; 580 { 581 int reg; 582 583 if (pcmcia_chip_io_map(pf->sc->pct, pf->sc->pch, 584 width, offset, size, pcihp, windowp)) 585 return (1); 586 587 /* 588 * XXX in the multifunction multi-iospace-per-function case, this 589 * needs to cooperate with io_alloc to make sure that the spaces 590 * don't overlap, and that the ccr's are set correctly 591 */ 592 593 if (pcmcia_mfc(pf->sc)) { 594 long tmp, iosize; 595 596 if (pf->pf_mfc_iomax == 0) { 597 pf->pf_mfc_iobase = pcihp->addr + offset; 598 pf->pf_mfc_iomax = pf->pf_mfc_iobase + size; 599 } else { 600 /* this makes the assumption that nothing overlaps */ 601 if (pf->pf_mfc_iobase > pcihp->addr + offset) 602 pf->pf_mfc_iobase = pcihp->addr + offset; 603 if (pf->pf_mfc_iomax < pcihp->addr + offset + size) 604 pf->pf_mfc_iomax = pcihp->addr + offset + size; 605 } 606 607 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase; 608 /* round up to nearest (2^n)-1 */ 609 for (iosize = 1; iosize >= tmp; iosize <<= 1) 610 ; 611 iosize--; 612 613 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE0, 614 pf->pf_mfc_iobase & 0xff); 615 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE1, 616 (pf->pf_mfc_iobase >> 8) & 0xff); 617 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE2, 0); 618 pcmcia_ccr_write(pf, PCMCIA_CCR_IOBASE3, 0); 619 620 pcmcia_ccr_write(pf, PCMCIA_CCR_IOSIZE, iosize); 621 622 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 623 reg |= PCMCIA_CCR_OPTION_ADDR_DECODE; 624 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 625 } 626 return (0); 627 } 628 629 void 630 pcmcia_io_unmap(pf, window) 631 struct pcmcia_function *pf; 632 int window; 633 { 634 635 pcmcia_chip_io_unmap(pf->sc->pct, pf->sc->pch, window); 636 637 /* XXX Anything for multi-function cards? */ 638 } 639 640 void * 641 pcmcia_intr_establish(pf, ipl, ih_fct, ih_arg) 642 struct pcmcia_function *pf; 643 int ipl; 644 int (*ih_fct) __P((void *)); 645 void *ih_arg; 646 { 647 void *ret; 648 649 /* behave differently if this is a multifunction card */ 650 651 if (pcmcia_mfc(pf->sc)) { 652 int s, ihcnt, hiipl, reg; 653 struct pcmcia_function *pf2; 654 655 /* 656 * mask all the ipl's which are already used by this card, 657 * and find the highest ipl number (lowest priority) 658 */ 659 660 ihcnt = 0; 661 s = 0; /* this is only here to keep the compiler 662 happy */ 663 hiipl = 0; /* this is only here to keep the compiler 664 happy */ 665 666 for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL; 667 pf2 = pf2->pf_list.sqe_next) { 668 if (pf2->ih_fct) { 669 DPRINTF(("%s: function %d has ih_fct %p\n", 670 pf->sc->dev.dv_xname, pf2->number, 671 pf2->ih_fct)); 672 673 if (ihcnt == 0) { 674 hiipl = pf2->ih_ipl; 675 } else { 676 if (pf2->ih_ipl > hiipl) 677 hiipl = pf2->ih_ipl; 678 } 679 680 ihcnt++; 681 } 682 } 683 684 /* 685 * establish the real interrupt, changing the ipl if 686 * necessary 687 */ 688 689 if (ihcnt == 0) { 690 #ifdef DIAGNOSTIC 691 if (pf->sc->ih != NULL) 692 panic("card has intr handler, but no function does"); 693 #endif 694 s = splhigh(); 695 696 /* set up the handler for the new function */ 697 698 pf->ih_fct = ih_fct; 699 pf->ih_arg = ih_arg; 700 pf->ih_ipl = ipl; 701 702 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 703 pf->sc->pch, pf, ipl, PCMCIA_CARD_INTR, pf->sc); 704 splx(s); 705 } else if (ipl > hiipl) { 706 #ifdef DIAGNOSTIC 707 if (pf->sc->ih == NULL) 708 panic("functions have ih, but the card does not"); 709 #endif 710 711 /* XXX need #ifdef for splserial on x86 */ 712 s = splhigh(); 713 714 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 715 pf->sc->ih); 716 717 /* set up the handler for the new function */ 718 pf->ih_fct = ih_fct; 719 pf->ih_arg = ih_arg; 720 pf->ih_ipl = ipl; 721 722 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 723 pf->sc->pch, pf, ipl, PCMCIA_CARD_INTR, pf->sc); 724 725 splx(s); 726 } else { 727 s = splhigh(); 728 729 /* set up the handler for the new function */ 730 731 pf->ih_fct = ih_fct; 732 pf->ih_arg = ih_arg; 733 pf->ih_ipl = ipl; 734 735 splx(s); 736 } 737 738 ret = pf->sc->ih; 739 740 if (ret != NULL) { 741 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 742 reg |= PCMCIA_CCR_OPTION_IREQ_ENABLE; 743 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 744 745 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 746 reg |= PCMCIA_CCR_STATUS_INTRACK; 747 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, reg); 748 } 749 } else { 750 ret = pcmcia_chip_intr_establish(pf->sc->pct, pf->sc->pch, 751 pf, ipl, ih_fct, ih_arg); 752 } 753 754 return (ret); 755 } 756 757 void 758 pcmcia_intr_disestablish(pf, ih) 759 struct pcmcia_function *pf; 760 void *ih; 761 { 762 /* behave differently if this is a multifunction card */ 763 764 if (pcmcia_mfc(pf->sc)) { 765 int s, ihcnt, hiipl; 766 struct pcmcia_function *pf2; 767 768 /* 769 * mask all the ipl's which are already used by this card, 770 * and find the highest ipl number (lowest priority). Skip 771 * the current function. 772 */ 773 774 ihcnt = 0; 775 s = 0; /* this is only here to keep the compipler 776 happy */ 777 hiipl = 0; /* this is only here to keep the compipler 778 happy */ 779 780 for (pf2 = pf->sc->card.pf_head.sqh_first; pf2 != NULL; 781 pf2 = pf2->pf_list.sqe_next) { 782 if (pf2 == pf) 783 continue; 784 785 if (pf2->ih_fct) { 786 if (ihcnt == 0) { 787 hiipl = pf2->ih_ipl; 788 } else { 789 if (pf2->ih_ipl > hiipl) 790 hiipl = pf2->ih_ipl; 791 } 792 ihcnt++; 793 } 794 } 795 796 /* 797 * if the ih being removed is lower priority than the lowest 798 * priority remaining interrupt, up the priority. 799 */ 800 801 /* ihcnt is the number of interrupt handlers *not* including 802 the one about to be removed. */ 803 804 if (ihcnt == 0) { 805 int reg; 806 807 #ifdef DIAGNOSTIC 808 if (pf->sc->ih == NULL) 809 panic("disestablishing last function, but card has no ih"); 810 #endif 811 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 812 pf->sc->ih); 813 814 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); 815 reg &= ~PCMCIA_CCR_OPTION_IREQ_ENABLE; 816 pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); 817 818 pf->ih_fct = NULL; 819 pf->ih_arg = NULL; 820 821 pf->sc->ih = NULL; 822 } else if (pf->ih_ipl > hiipl) { 823 #ifdef DIAGNOSTIC 824 if (pf->sc->ih == NULL) 825 panic("changing ih ipl, but card has no ih"); 826 #endif 827 /* XXX need #ifdef for splserial on x86 */ 828 s = splhigh(); 829 830 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, 831 pf->sc->ih); 832 pf->sc->ih = pcmcia_chip_intr_establish(pf->sc->pct, 833 pf->sc->pch, pf, hiipl, PCMCIA_CARD_INTR, pf->sc); 834 835 /* null out the handler for this function */ 836 837 pf->ih_fct = NULL; 838 pf->ih_arg = NULL; 839 840 splx(s); 841 } else { 842 s = splhigh(); 843 844 pf->ih_fct = NULL; 845 pf->ih_arg = NULL; 846 847 splx(s); 848 } 849 } else { 850 pcmcia_chip_intr_disestablish(pf->sc->pct, pf->sc->pch, ih); 851 } 852 } 853 854 int 855 pcmcia_card_intr(arg) 856 void *arg; 857 { 858 struct pcmcia_softc *sc = arg; 859 struct pcmcia_function *pf; 860 int reg, ret, ret2; 861 862 ret = 0; 863 864 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 865 pf = pf->pf_list.sqe_next) { 866 if (pf->ih_fct != NULL && 867 (pf->ccr_mask & (1 << (PCMCIA_CCR_STATUS / 2)))) { 868 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 869 if (reg & PCMCIA_CCR_STATUS_INTR) { 870 ret2 = (*pf->ih_fct)(pf->ih_arg); 871 if (ret2 != 0 && ret == 0) 872 ret = ret2; 873 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 874 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, 875 reg & ~PCMCIA_CCR_STATUS_INTR); 876 } 877 } 878 } 879 880 return (ret); 881 } 882 883 #ifdef PCMCIADEBUG 884 int 885 pcmcia_card_intrdebug(arg) 886 void *arg; 887 { 888 struct pcmcia_softc *sc = arg; 889 struct pcmcia_function *pf; 890 int reg, ret, ret2; 891 892 ret = 0; 893 894 for (pf = sc->card.pf_head.sqh_first; pf != NULL; 895 pf = pf->pf_list.sqe_next) { 896 printf("%s: intr flags=%x fct=%d cor=%02x csr=%02x pin=%02x", 897 sc->dev.dv_xname, pf->pf_flags, pf->number, 898 pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION), 899 pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS), 900 pcmcia_ccr_read(pf, PCMCIA_CCR_PIN)); 901 if (pf->ih_fct != NULL && 902 (pf->ccr_mask & (1 << (PCMCIA_CCR_STATUS / 2)))) { 903 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 904 if (reg & PCMCIA_CCR_STATUS_INTR) { 905 ret2 = (*pf->ih_fct)(pf->ih_arg); 906 if (ret2 != 0 && ret == 0) 907 ret = ret2; 908 reg = pcmcia_ccr_read(pf, PCMCIA_CCR_STATUS); 909 printf("; csr %02x->%02x", 910 reg, reg & ~PCMCIA_CCR_STATUS_INTR); 911 pcmcia_ccr_write(pf, PCMCIA_CCR_STATUS, 912 reg & ~PCMCIA_CCR_STATUS_INTR); 913 } 914 } 915 printf("\n"); 916 } 917 918 return (ret); 919 } 920 #endif 921
Indexes created Sun Sep 28 07:09:56 GMT 2025