sys/dev/pccard/pccard.c

   1 /*      $NetBSD: pcmcia.c,v 1.23 2000/07/28 19:17:02 drochner Exp $     */
   2 /* $FreeBSD$ */
   3
   4 /*
   5  * Copyright (c) 1997 Marc Horowitz.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Marc Horowitz.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/malloc.h>
  36 #include <sys/module.h>
  37 #include <sys/kernel.h>
  38 #include <sys/queue.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/types.h>
  41
  42 #include <sys/bus.h>
  43 #include <machine/bus.h>
  44 #include <sys/rman.h>
  45 #include <machine/resource.h>
  46
  47 #include <net/ethernet.h>
  48
  49 #include <dev/pccard/pccardreg.h>
  50 #include <dev/pccard/pccardvar.h>
  51
  52 #include "power_if.h"
  53 #include "card_if.h"
  54
  55 #define PCCARDDEBUG
  56
  57 /* sysctl vars */
  58 SYSCTL_NODE(_hw, OID_AUTO, pccard, CTLFLAG_RD, 0, "PCCARD parameters");
  59
  60 int     pccard_debug = 0;
  61 TUNABLE_INT("hw.pccard.debug", &pccard_debug);
  62 SYSCTL_INT(_hw_pccard, OID_AUTO, debug, CTLFLAG_RW,
  63     &pccard_debug, 0,
  64   "pccard debug");
  65
  66 int     pccard_cis_debug = 0;
  67 TUNABLE_INT("hw.pccard.cis_debug", &pccard_cis_debug);
  68 SYSCTL_INT(_hw_pccard, OID_AUTO, cis_debug, CTLFLAG_RW,
  69     &pccard_cis_debug, 0, "pccard CIS debug");
  70
  71 #ifdef PCCARDDEBUG
  72 #define DPRINTF(arg) if (pccard_debug) printf arg
  73 #define DEVPRINTF(arg) if (pccard_debug) device_printf arg
  74 #define PRVERBOSE(arg) printf arg
  75 #define DEVPRVERBOSE(arg) device_printf arg
  76 #else
  77 #define DPRINTF(arg)
  78 #define DEVPRINTF(arg)
  79 #define PRVERBOSE(arg) if (bootverbose) printf arg
  80 #define DEVPRVERBOSE(arg) if (bootverbose) device_printf arg
  81 #endif
  82
  83 static int      pccard_ccr_read(struct pccard_function *pf, int ccr);
  84 static void     pccard_ccr_write(struct pccard_function *pf, int ccr, int val);
  85 static int      pccard_attach_card(device_t dev);
  86 static int      pccard_detach_card(device_t dev);
  87 static int      pccard_card_gettype(device_t dev, int *type);
  88 static void     pccard_function_init(struct pccard_function *pf);
  89 static void     pccard_function_free(struct pccard_function *pf);
  90 static int      pccard_function_enable(struct pccard_function *pf);
  91 static void     pccard_function_disable(struct pccard_function *pf);
  92 static int      pccard_compat_do_probe(device_t bus, device_t dev);
  93 static int      pccard_compat_do_attach(device_t bus, device_t dev);
  94 static int      pccard_add_children(device_t dev, int busno);
  95 static int      pccard_probe(device_t dev);
  96 static int      pccard_attach(device_t dev);
  97 static int      pccard_detach(device_t dev);
  98 static void     pccard_print_resources(struct resource_list *rl,
  99                     const char *name, int type, int count, const char *format);
 100 static int      pccard_print_child(device_t dev, device_t child);
 101 static int      pccard_set_resource(device_t dev, device_t child, int type,
 102                     int rid, u_long start, u_long count);
 103 static int      pccard_get_resource(device_t dev, device_t child, int type,
 104                     int rid, u_long *startp, u_long *countp);
 105 static void     pccard_delete_resource(device_t dev, device_t child, int type,
 106                     int rid);
 107 static int      pccard_set_res_flags(device_t dev, device_t child, int type,
 108                     int rid, u_int32_t flags);
 109 static int      pccard_set_memory_offset(device_t dev, device_t child, int rid,
 110                     u_int32_t offset, u_int32_t *deltap);
 111 static void     pccard_probe_nomatch(device_t cbdev, device_t child);
 112 static int      pccard_read_ivar(device_t bus, device_t child, int which,
 113                     u_char *result);
 114 static void     pccard_driver_added(device_t dev, driver_t *driver);
 115 static struct resource *pccard_alloc_resource(device_t dev,
 116                     device_t child, int type, int *rid, u_long start,
 117                     u_long end, u_long count, u_int flags);
 118 static int      pccard_release_resource(device_t dev, device_t child, int type,
 119                     int rid, struct resource *r);
 120 static void     pccard_child_detached(device_t parent, device_t dev);
 121 static void     pccard_intr(void *arg);
 122 static int      pccard_setup_intr(device_t dev, device_t child,
 123                     struct resource *irq, int flags, driver_intr_t *intr,
 124                     void *arg, void **cookiep);
 125 static int      pccard_teardown_intr(device_t dev, device_t child,
 126                     struct resource *r, void *cookie);
 127
 128 static const struct pccard_product *
 129 pccard_do_product_lookup(device_t bus, device_t dev,
 130                          const struct pccard_product *tab, size_t ent_size,
 131                          pccard_product_match_fn matchfn);
 132
 133
 134 static int
 135 pccard_ccr_read(struct pccard_function *pf, int ccr)
 136 {
 137         return (bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
 138             pf->pf_ccr_offset + ccr));
 139 }
 140
 141 static void
 142 pccard_ccr_write(struct pccard_function *pf, int ccr, int val)
 143 {
 144         if ((pf->ccr_mask) & (1 << (ccr / 2))) {
 145                 bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh,
 146                     pf->pf_ccr_offset + ccr, val);
 147         }
 148 }
 149
 150 static int
 151 pccard_attach_card(device_t dev)
 152 {
 153         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 154         struct pccard_function *pf;
 155         struct pccard_ivar *ivar;
 156         device_t child;
 157         int i;
 158
 159         /*
 160          * this is here so that when socket_enable calls gettype, trt happens
 161          */
 162         STAILQ_INIT(&sc->card.pf_head);
 163
 164         DEVPRINTF((dev, "chip_socket_enable\n"));
 165         POWER_ENABLE_SOCKET(device_get_parent(dev), dev);
 166
 167         DEVPRINTF((dev, "read_cis\n"));
 168         pccard_read_cis(sc);
 169
 170         DEVPRINTF((dev, "check_cis_quirks\n"));
 171         pccard_check_cis_quirks(dev);
 172
 173         /*
 174          * bail now if the card has no functions, or if there was an error in
 175          * the cis.
 176          */
 177
 178         if (sc->card.error) {
 179                 device_printf(dev, "CARD ERROR!\n");
 180                 return (1);
 181         }
 182         if (STAILQ_EMPTY(&sc->card.pf_head)) {
 183                 device_printf(dev, "Card has no functions!\n");
 184                 return (1);
 185         }
 186
 187         if (bootverbose || pccard_debug)
 188                 pccard_print_cis(dev);
 189
 190         DEVPRINTF((dev, "functions scanning\n"));
 191         i = -1;
 192         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
 193                 i++;
 194                 if (STAILQ_EMPTY(&pf->cfe_head)) {
 195                         device_printf(dev,
 196                             "Function %d has no config entries.!\n", i);
 197                         continue;
 198                 }
 199                 pf->sc = sc;
 200                 pf->cfe = NULL;
 201                 pf->dev = NULL;
 202         }
 203         DEVPRINTF((dev, "Card has %d functions. pccard_mfc is %d\n", i + 1,
 204             pccard_mfc(sc)));
 205
 206         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
 207                 if (STAILQ_EMPTY(&pf->cfe_head))
 208                         continue;
 209                 /*
 210                  * In NetBSD, the drivers are responsible for activating
 211                  * each function of a card.  I think that in FreeBSD we
 212                  * want to activate them enough for the usual bus_*_resource
 213                  * routines will do the right thing.  This many mean a
 214                  * departure from the current NetBSD model.
 215                  *
 216                  * This seems to work well in practice for most cards.
 217                  * However, there are two cases that are problematic.
 218                  * If a driver wishes to pick and chose which config
 219                  * entry to use, then this method falls down.  These
 220                  * are usually older cards.  In addition, there are
 221                  * some cards that have multiple hardware units on the
 222                  * cards, but presents only one CIS chain.  These cards
 223                  * are combination cards, but only one of these units
 224                  * can be on at a time.
 225                  */
 226                 ivar = malloc(sizeof(struct pccard_ivar), M_DEVBUF,
 227                     M_WAITOK | M_ZERO);
 228                 child = device_add_child(dev, NULL, -1);
 229                 device_set_ivars(child, ivar);
 230                 ivar->fcn = pf;
 231                 pf->dev = child;
 232                 /*
 233                  * XXX We might want to move the next two lines into
 234                  * XXX the pccard interface layer.  For the moment, this
 235                  * XXX is OK, but some drivers want to pick the config
 236                  * XXX entry to use as well as some address tweaks (mostly
 237                  * XXX due to bugs in decode logic that makes some
 238                  * XXX addresses illegal or broken).
 239                  */
 240                 pccard_function_init(pf);
 241                 if (sc->sc_enabled_count == 0)
 242                         POWER_ENABLE_SOCKET(device_get_parent(dev), dev);
 243                 if (pccard_function_enable(pf) == 0 &&
 244                     device_probe_and_attach(child) == 0) {
 245                         DEVPRINTF((sc->dev, "function %d CCR at %d "
 246                             "offset %x: %x %x %x %x, %x %x %x %x, %x\n",
 247                             pf->number, pf->pf_ccr_window, pf->pf_ccr_offset,
 248                             pccard_ccr_read(pf, 0x00),
 249                         pccard_ccr_read(pf, 0x02), pccard_ccr_read(pf, 0x04),
 250                         pccard_ccr_read(pf, 0x06), pccard_ccr_read(pf, 0x0A),
 251                         pccard_ccr_read(pf, 0x0C), pccard_ccr_read(pf, 0x0E),
 252                         pccard_ccr_read(pf, 0x10), pccard_ccr_read(pf, 0x12)));
 253                 } else {
 254                         if (pf->cfe != NULL)
 255                                 pccard_function_disable(pf);
 256                 }
 257         }
 258         return (0);
 259 }
 260
 261 static int
 262 pccard_detach_card(device_t dev)
 263 {
 264         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 265         struct pccard_function *pf;
 266         struct pccard_config_entry *cfe;
 267
 268         /*
 269          * We are running on either the PCCARD socket's event thread
 270          * or in user context detaching a device by user request.
 271          */
 272         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
 273                 int state = device_get_state(pf->dev);
 274
 275                 if (state == DS_ATTACHED || state == DS_BUSY)
 276                         device_detach(pf->dev);
 277                 if (pf->cfe != NULL)
 278                         pccard_function_disable(pf);
 279                 pccard_function_free(pf);
 280                 device_delete_child(dev, pf->dev);
 281         }
 282         if (sc->sc_enabled_count == 0)
 283                 POWER_DISABLE_SOCKET(device_get_parent(dev), dev);
 284
 285         while (NULL != (pf = STAILQ_FIRST(&sc->card.pf_head))) {
 286                 while (NULL != (cfe = STAILQ_FIRST(&pf->cfe_head))) {
 287                         STAILQ_REMOVE_HEAD(&pf->cfe_head, cfe_list);
 288                         free(cfe, M_DEVBUF);
 289                 }
 290                 STAILQ_REMOVE_HEAD(&sc->card.pf_head, pf_list);
 291                 free(pf, M_DEVBUF);
 292         }
 293         return (0);
 294 }
 295
 296 static const struct pccard_product *
 297 pccard_do_product_lookup(device_t bus, device_t dev,
 298                          const struct pccard_product *tab, size_t ent_size,
 299                          pccard_product_match_fn matchfn)
 300 {
 301         const struct pccard_product *ent;
 302         int matches;
 303         u_int32_t fcn;
 304         u_int32_t vendor;
 305         u_int32_t prod;
 306         char *vendorstr;
 307         char *prodstr;
 308
 309 #ifdef DIAGNOSTIC
 310         if (sizeof *ent > ent_size)
 311                 panic("pccard_product_lookup: bogus ent_size %ld",
 312                     (long) ent_size);
 313 #endif
 314         if (pccard_get_vendor(dev, &vendor))
 315                 return (NULL);
 316         if (pccard_get_product(dev, &prod))
 317                 return (NULL);
 318         if (pccard_get_function_number(dev, &fcn))
 319                 return (NULL);
 320         if (pccard_get_vendor_str(dev, &vendorstr))
 321                 return (NULL);
 322         if (pccard_get_product_str(dev, &prodstr))
 323                 return (NULL);
 324         for (ent = tab; ent->pp_name != NULL; ent =
 325             (const struct pccard_product *) ((const char *) ent + ent_size)) {
 326                 matches = 1;
 327                 if (ent->pp_vendor == PCCARD_VENDOR_ANY &&
 328                     ent->pp_product == PCCARD_VENDOR_ANY &&
 329                     ent->pp_cis[0] == NULL &&
 330                     ent->pp_cis[1] == NULL) {
 331                         device_printf(dev,
 332                             "Total wildcard entry ignored for %s\n",
 333                             ent->pp_name);
 334                         continue;
 335                 }
 336                 if (matches && ent->pp_vendor != PCCARD_VENDOR_ANY &&
 337                     vendor != ent->pp_vendor)
 338                         matches = 0;
 339                 if (matches && ent->pp_product != PCCARD_PRODUCT_ANY &&
 340                     prod != ent->pp_product)
 341                         matches = 0;
 342                 if (matches && fcn != ent->pp_expfunc)
 343                         matches = 0;
 344                 if (matches && ent->pp_cis[0] &&
 345                     strcmp(ent->pp_cis[0], vendorstr) != 0)
 346                         matches = 0;
 347                 if (matches && ent->pp_cis[1] &&
 348                     strcmp(ent->pp_cis[1], prodstr) != 0)
 349                         matches = 0;
 350                 /* XXX need to match cis[2] and cis[3] also XXX */
 351                 if (matchfn != NULL)
 352                         matches = (*matchfn)(dev, ent, matches);
 353                 if (matches)
 354                         return (ent);
 355         }
 356         return (NULL);
 357 }
 358
 359 static int
 360 pccard_card_gettype(device_t dev, int *type)
 361 {
 362         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 363         struct pccard_function *pf;
 364
 365         /*
 366          * set the iftype to memory if this card has no functions (not yet
 367          * probed), or only one function, and that is not initialized yet or
 368          * that is memory.
 369          */
 370         pf = STAILQ_FIRST(&sc->card.pf_head);
 371         if (pf == NULL ||
 372             (STAILQ_NEXT(pf, pf_list) == NULL &&
 373             (pf->cfe == NULL || pf->cfe->iftype == PCCARD_IFTYPE_MEMORY)))
 374                 *type = PCCARD_IFTYPE_MEMORY;
 375         else
 376                 *type = PCCARD_IFTYPE_IO;
 377         return (0);
 378 }
 379
 380 /*
 381  * Initialize a PCCARD function.  May be called as long as the function is
 382  * disabled.
 383  *
 384  * Note: pccard_function_init should not keep resources allocated.  It should
 385  * only set them up ala isa pnp, set the values in the rl lists, and return.
 386  * Any resource held after pccard_function_init is called is a bug.  However,
 387  * the bus routines to get the resources also assume that pccard_function_init
 388  * does this, so they need to be fixed too.
 389  */
 390 static void
 391 pccard_function_init(struct pccard_function *pf)
 392 {
 393         struct pccard_config_entry *cfe;
 394         int i;
 395         struct pccard_ivar *devi = PCCARD_IVAR(pf->dev);
 396         struct resource_list *rl = &devi->resources;
 397         struct resource_list_entry *rle;
 398         struct resource *r = 0;
 399         device_t bus;
 400         int start;
 401         int end;
 402         int spaces;
 403
 404         if (pf->pf_flags & PFF_ENABLED) {
 405                 printf("pccard_function_init: function is enabled");
 406                 return;
 407         }
 408         bus = device_get_parent(pf->dev);
 409         /* Remember which configuration entry we are using. */
 410         STAILQ_FOREACH(cfe, &pf->cfe_head, cfe_list) {
 411                 for (i = 0; i < cfe->num_iospace; i++)
 412                         cfe->iores[i] = NULL;
 413                 cfe->irqres = NULL;
 414                 spaces = 0;
 415                 for (i = 0; i < cfe->num_iospace; i++) {
 416                         start = cfe->iospace[i].start;
 417                         if (start)
 418                                 end = start + cfe->iospace[i].length - 1;
 419                         else
 420                                 end = ~0;
 421                         cfe->iorid[i] = i;
 422                         DEVPRINTF((bus, "I/O rid %d start %x end %x\n",
 423                             i, start, end));
 424                         r = cfe->iores[i] = bus_alloc_resource(bus,
 425                             SYS_RES_IOPORT, &cfe->iorid[i], start, end,
 426                             cfe->iospace[i].length,
 427                             rman_make_alignment_flags(cfe->iospace[i].length));
 428                         if (cfe->iores[i] == NULL)
 429                                 goto not_this_one;
 430                         resource_list_add(rl, SYS_RES_IOPORT, cfe->iorid[i],
 431                             rman_get_start(r), rman_get_end(r),
 432                             cfe->iospace[i].length);
 433                         rle = resource_list_find(rl, SYS_RES_IOPORT,
 434                             cfe->iorid[i]);
 435                         rle->res = r;
 436                         spaces++;
 437                 }
 438                 if (cfe->num_memspace > 0) {
 439                         /*
 440                          * Not implement yet, Fix me.
 441                          */
 442                         DEVPRINTF((bus, "Memory space not yet implemented.\n"));
 443                 }
 444                 if (spaces == 0) {
 445                         DEVPRINTF((bus, "Neither memory nor I/O mampped\n"));
 446                         goto not_this_one;
 447                 }
 448                 if (cfe->irqmask) {
 449                         cfe->irqrid = 0;
 450                         r = cfe->irqres = bus_alloc_resource(bus, SYS_RES_IRQ,
 451                             &cfe->irqrid, 0, ~0, 1, 0);
 452                         if (cfe->irqres == NULL)
 453                                 goto not_this_one;
 454                         resource_list_add(rl, SYS_RES_IRQ, cfe->irqrid,
 455                             rman_get_start(r), rman_get_end(r), 1);
 456                         rle = resource_list_find(rl, SYS_RES_IRQ,
 457                             cfe->irqrid);
 458                         rle->res = r;
 459                 }
 460                 /* If we get to here, we've allocated all we need */
 461                 pf->cfe = cfe;
 462                 break;
 463             not_this_one:;
 464                 DEVPRVERBOSE((bus, "Allocation failed for cfe %d\n",
 465                     cfe->number));
 466                 /*
 467                  * Release resources that we partially allocated
 468                  * from this config entry.
 469                  */
 470                 for (i = 0; i < cfe->num_iospace; i++) {
 471                         if (cfe->iores[i] != NULL) {
 472                                 bus_release_resource(bus, SYS_RES_IOPORT,
 473                                     cfe->iorid[i], cfe->iores[i]);
 474                                 rle = resource_list_find(rl, SYS_RES_IOPORT,
 475                                     cfe->iorid[i]);
 476                                 rle->res = NULL;
 477                                 resource_list_delete(rl, SYS_RES_IOPORT,
 478                                     cfe->iorid[i]);
 479                         }
 480                         cfe->iores[i] = NULL;
 481                 }
 482                 if (cfe->irqmask && cfe->irqres != NULL) {
 483                         bus_release_resource(bus, SYS_RES_IRQ,
 484                             cfe->irqrid, cfe->irqres);
 485                         rle = resource_list_find(rl, SYS_RES_IRQ,
 486                             cfe->irqrid);
 487                         rle->res = NULL;
 488                         resource_list_delete(rl, SYS_RES_IRQ, cfe->irqrid);
 489                         cfe->irqres = NULL;
 490                 }
 491         }
 492 }
 493
 494 /*
 495  * Free resources allocated by pccard_function_init(), May be called as long
 496  * as the function is disabled.
 497  *
 498  * NOTE: This function should be unnecessary.  pccard_function_init should
 499  * never keep resources initialized.
 500  */
 501 static void
 502 pccard_function_free(struct pccard_function *pf)
 503 {
 504         struct pccard_ivar *devi = PCCARD_IVAR(pf->dev);
 505         struct resource_list_entry *rle;
 506
 507         if (pf->pf_flags & PFF_ENABLED) {
 508                 printf("pccard_function_init: function is enabled");
 509                 return;
 510         }
 511
 512         SLIST_FOREACH(rle, &devi->resources, link) {
 513                 if (rle->res) {
 514                         if (rle->res->r_dev != pf->sc->dev)
 515                                 device_printf(pf->sc->dev,
 516                                     "function_free: Resource still owned by "
 517                                     "child, oops. "
 518                                     "(type=%d, rid=%d, addr=%lx)\n",
 519                                     rle->type, rle->rid,
 520                                     rman_get_start(rle->res));
 521                         BUS_RELEASE_RESOURCE(device_get_parent(pf->sc->dev),
 522                             rle->res->r_dev, rle->type, rle->rid, rle->res);
 523                         rle->res = NULL;
 524                 }
 525         }
 526         resource_list_free(&devi->resources);
 527 }
 528
 529 /* Enable a PCCARD function */
 530 static int
 531 pccard_function_enable(struct pccard_function *pf)
 532 {
 533         struct pccard_function *tmp;
 534         int reg;
 535         device_t dev = pf->sc->dev;
 536
 537         if (pf->cfe == NULL) {
 538                 DEVPRVERBOSE((dev, "No config entry could be allocated.\n"));
 539                 return (ENOMEM);
 540         }
 541
 542         /*
 543          * Increase the reference count on the socket, enabling power, if
 544          * necessary.
 545          */
 546         pf->sc->sc_enabled_count++;
 547
 548         if (pf->pf_flags & PFF_ENABLED) {
 549                 /*
 550                  * Don't do anything if we're already enabled.
 551                  */
 552                 return (0);
 553         }
 554
 555         /*
 556          * it's possible for different functions' CCRs to be in the same
 557          * underlying page.  Check for that.
 558          */
 559         STAILQ_FOREACH(tmp, &pf->sc->card.pf_head, pf_list) {
 560                 if ((tmp->pf_flags & PFF_ENABLED) &&
 561                     (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) &&
 562                     ((pf->ccr_base + PCCARD_CCR_SIZE) <=
 563                     (tmp->ccr_base - tmp->pf_ccr_offset +
 564                     tmp->pf_ccr_realsize))) {
 565                         pf->pf_ccrt = tmp->pf_ccrt;
 566                         pf->pf_ccrh = tmp->pf_ccrh;
 567                         pf->pf_ccr_realsize = tmp->pf_ccr_realsize;
 568
 569                         /*
 570                          * pf->pf_ccr_offset = (tmp->pf_ccr_offset -
 571                          * tmp->ccr_base) + pf->ccr_base;
 572                          */
 573                         /* pf->pf_ccr_offset =
 574                             (tmp->pf_ccr_offset + pf->ccr_base) -
 575                             tmp->ccr_base; */
 576                         pf->pf_ccr_window = tmp->pf_ccr_window;
 577                         break;
 578                 }
 579         }
 580         if (tmp == NULL) {
 581                 pf->ccr_rid = 0;
 582                 pf->ccr_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
 583                     &pf->ccr_rid, 0, ~0, 1 << 10, RF_ACTIVE);
 584                 if (!pf->ccr_res)
 585                         goto bad;
 586                 DEVPRINTF((dev, "ccr_res == %lx-%lx, base=%x\n",
 587                     rman_get_start(pf->ccr_res), rman_get_end(pf->ccr_res),
 588                     pf->ccr_base));
 589                 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY,
 590                     pf->ccr_rid, PCCARD_A_MEM_ATTR);
 591                 CARD_SET_MEMORY_OFFSET(device_get_parent(dev), dev,
 592                     pf->ccr_rid, pf->ccr_base, &pf->pf_ccr_offset);
 593                 pf->pf_ccrt = rman_get_bustag(pf->ccr_res);
 594                 pf->pf_ccrh = rman_get_bushandle(pf->ccr_res);
 595                 pf->pf_ccr_realsize = 1;
 596         }
 597
 598         reg = (pf->cfe->number & PCCARD_CCR_OPTION_CFINDEX);
 599         reg |= PCCARD_CCR_OPTION_LEVIREQ;
 600         if (pccard_mfc(pf->sc)) {
 601                 reg |= (PCCARD_CCR_OPTION_FUNC_ENABLE |
 602                         PCCARD_CCR_OPTION_ADDR_DECODE);
 603                 /* PCCARD_CCR_OPTION_IRQ_ENABLE set elsewhere as needed */
 604         }
 605         pccard_ccr_write(pf, PCCARD_CCR_OPTION, reg);
 606
 607         reg = 0;
 608         if ((pf->cfe->flags & PCCARD_CFE_IO16) == 0)
 609                 reg |= PCCARD_CCR_STATUS_IOIS8;
 610         if (pf->cfe->flags & PCCARD_CFE_AUDIO)
 611                 reg |= PCCARD_CCR_STATUS_AUDIO;
 612         pccard_ccr_write(pf, PCCARD_CCR_STATUS, reg);
 613
 614         pccard_ccr_write(pf, PCCARD_CCR_SOCKETCOPY, 0);
 615
 616         if (pccard_mfc(pf->sc)) {
 617                 long tmp, iosize;
 618
 619                 tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase;
 620                 /* round up to nearest (2^n)-1 */
 621                 for (iosize = 1; iosize < tmp; iosize <<= 1)
 622                         ;
 623                 iosize--;
 624
 625                 pccard_ccr_write(pf, PCCARD_CCR_IOBASE0,
 626                                  pf->pf_mfc_iobase & 0xff);
 627                 pccard_ccr_write(pf, PCCARD_CCR_IOBASE1,
 628                                  (pf->pf_mfc_iobase >> 8) & 0xff);
 629                 pccard_ccr_write(pf, PCCARD_CCR_IOBASE2, 0);
 630                 pccard_ccr_write(pf, PCCARD_CCR_IOBASE3, 0);
 631
 632                 pccard_ccr_write(pf, PCCARD_CCR_IOSIZE, iosize);
 633         }
 634
 635 #ifdef PCCARDDEBUG
 636         if (pccard_debug) {
 637                 STAILQ_FOREACH(tmp, &pf->sc->card.pf_head, pf_list) {
 638                         device_printf(tmp->sc->dev,
 639                             "function %d CCR at %d offset %x: "
 640                             "%x %x %x %x, %x %x %x %x, %x\n",
 641                             tmp->number, tmp->pf_ccr_window,
 642                             tmp->pf_ccr_offset,
 643                             pccard_ccr_read(tmp, 0x00),
 644                             pccard_ccr_read(tmp, 0x02),
 645                             pccard_ccr_read(tmp, 0x04),
 646                             pccard_ccr_read(tmp, 0x06),
 647                             pccard_ccr_read(tmp, 0x0A),
 648                             pccard_ccr_read(tmp, 0x0C),
 649                             pccard_ccr_read(tmp, 0x0E),
 650                             pccard_ccr_read(tmp, 0x10),
 651                             pccard_ccr_read(tmp, 0x12));
 652                 }
 653         }
 654 #endif
 655         pf->pf_flags |= PFF_ENABLED;
 656         return (0);
 657
 658  bad:
 659         /*
 660          * Decrement the reference count, and power down the socket, if
 661          * necessary.
 662          */
 663         pf->sc->sc_enabled_count--;
 664         DEVPRINTF((dev, "bad --enabled_count = %d\n", pf->sc->sc_enabled_count));
 665
 666         return (1);
 667 }
 668
 669 /* Disable PCCARD function. */
 670 static void
 671 pccard_function_disable(struct pccard_function *pf)
 672 {
 673         struct pccard_function *tmp;
 674         device_t dev = pf->sc->dev;
 675
 676         if (pf->cfe == NULL)
 677                 panic("pccard_function_disable: function not initialized");
 678
 679         if ((pf->pf_flags & PFF_ENABLED) == 0) {
 680                 /*
 681                  * Don't do anything if we're already disabled.
 682                  */
 683                 return;
 684         }
 685
 686         if (pf->intr_handler != NULL) {
 687                 struct pccard_ivar *devi = PCCARD_IVAR(pf->dev);
 688                 struct resource_list_entry *rle =
 689                     resource_list_find(&devi->resources, SYS_RES_IRQ, 0);
 690                 BUS_TEARDOWN_INTR(dev, pf->dev, rle->res,
 691                     pf->intr_handler_cookie);
 692         }
 693
 694         /*
 695          * it's possible for different functions' CCRs to be in the same
 696          * underlying page.  Check for that.  Note we mark us as disabled
 697          * first to avoid matching ourself.
 698          */
 699
 700         pf->pf_flags &= ~PFF_ENABLED;
 701         STAILQ_FOREACH(tmp, &pf->sc->card.pf_head, pf_list) {
 702                 if ((tmp->pf_flags & PFF_ENABLED) &&
 703                     (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) &&
 704                     ((pf->ccr_base + PCCARD_CCR_SIZE) <=
 705                     (tmp->ccr_base - tmp->pf_ccr_offset +
 706                     tmp->pf_ccr_realsize)))
 707                         break;
 708         }
 709
 710         /* Not used by anyone else; unmap the CCR. */
 711         if (tmp == NULL) {
 712                 bus_release_resource(dev, SYS_RES_MEMORY, pf->ccr_rid,
 713                     pf->ccr_res);
 714                 pf->ccr_res = NULL;
 715         }
 716
 717         /*
 718          * Decrement the reference count, and power down the socket, if
 719          * necessary.
 720          */
 721         pf->sc->sc_enabled_count--;
 722 }
 723
 724 /*
 725  * simulate the old "probe" routine.  In the new world order, the driver
 726  * needs to grab devices while in the old they were assigned to the device by
 727  * the pccardd process.  These symbols are exported to the upper layers.
 728  */
 729 static int
 730 pccard_compat_do_probe(device_t bus, device_t dev)
 731 {
 732         return (CARD_COMPAT_MATCH(dev));
 733 }
 734
 735 static int
 736 pccard_compat_do_attach(device_t bus, device_t dev)
 737 {
 738         int err;
 739
 740         err = CARD_COMPAT_PROBE(dev);
 741         if (err == 0)
 742                 err = CARD_COMPAT_ATTACH(dev);
 743         return (err);
 744 }
 745
 746 #define PCCARD_NPORT    2
 747 #define PCCARD_NMEM     5
 748 #define PCCARD_NIRQ     1
 749 #define PCCARD_NDRQ     0
 750
 751 static int
 752 pccard_add_children(device_t dev, int busno)
 753 {
 754         /* Call parent to scan for any current children */
 755         return (0);
 756 }
 757
 758 static int
 759 pccard_probe(device_t dev)
 760 {
 761         device_set_desc(dev, "16-bit PCCard bus");
 762         return (pccard_add_children(dev, device_get_unit(dev)));
 763 }
 764
 765 static int
 766 pccard_attach(device_t dev)
 767 {
 768         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 769
 770         sc->dev = dev;
 771         sc->sc_enabled_count = 0;
 772         return (bus_generic_attach(dev));
 773 }
 774
 775 static int
 776 pccard_detach(device_t dev)
 777 {
 778         pccard_detach_card(dev);
 779         return 0;
 780 }
 781
 782 static int
 783 pccard_suspend(device_t self)
 784 {
 785         pccard_detach_card(self);
 786         return (0);
 787 }
 788
 789 static
 790 int
 791 pccard_resume(device_t self)
 792 {
 793         return (0);
 794 }
 795
 796 static void
 797 pccard_print_resources(struct resource_list *rl, const char *name, int type,
 798     int count, const char *format)
 799 {
 800         struct resource_list_entry *rle;
 801         int printed;
 802         int i;
 803
 804         printed = 0;
 805         for (i = 0; i < count; i++) {
 806                 rle = resource_list_find(rl, type, i);
 807                 if (rle != NULL) {
 808                         if (printed == 0)
 809                                 printf(" %s ", name);
 810                         else if (printed > 0)
 811                                 printf(",");
 812                         printed++;
 813                         printf(format, rle->start);
 814                         if (rle->count > 1) {
 815                                 printf("-");
 816                                 printf(format, rle->start + rle->count - 1);
 817                         }
 818                 } else if (i > 3) {
 819                         /* check the first few regardless */
 820                         break;
 821                 }
 822         }
 823 }
 824
 825 static int
 826 pccard_print_child(device_t dev, device_t child)
 827 {
 828         struct pccard_ivar *devi = PCCARD_IVAR(child);
 829         struct resource_list *rl = &devi->resources;
 830         int retval = 0;
 831
 832         retval += bus_print_child_header(dev, child);
 833         retval += printf(" at");
 834
 835         if (devi != NULL) {
 836                 pccard_print_resources(rl, "port", SYS_RES_IOPORT,
 837                     PCCARD_NPORT, "%#lx");
 838                 pccard_print_resources(rl, "iomem", SYS_RES_MEMORY,
 839                     PCCARD_NMEM, "%#lx");
 840                 pccard_print_resources(rl, "irq", SYS_RES_IRQ, PCCARD_NIRQ,
 841                     "%ld");
 842                 pccard_print_resources(rl, "drq", SYS_RES_DRQ, PCCARD_NDRQ,
 843                     "%ld");
 844                 retval += printf(" function %d config %d", devi->fcn->number,
 845                     devi->fcn->cfe->number);
 846         }
 847
 848         retval += bus_print_child_footer(dev, child);
 849
 850         return (retval);
 851 }
 852
 853 static int
 854 pccard_set_resource(device_t dev, device_t child, int type, int rid,
 855                  u_long start, u_long count)
 856 {
 857         struct pccard_ivar *devi = PCCARD_IVAR(child);
 858         struct resource_list *rl = &devi->resources;
 859
 860         if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
 861             && type != SYS_RES_IRQ && type != SYS_RES_DRQ)
 862                 return (EINVAL);
 863         if (rid < 0)
 864                 return (EINVAL);
 865         if (type == SYS_RES_IOPORT && rid >= PCCARD_NPORT)
 866                 return (EINVAL);
 867         if (type == SYS_RES_MEMORY && rid >= PCCARD_NMEM)
 868                 return (EINVAL);
 869         if (type == SYS_RES_IRQ && rid >= PCCARD_NIRQ)
 870                 return (EINVAL);
 871         if (type == SYS_RES_DRQ && rid >= PCCARD_NDRQ)
 872                 return (EINVAL);
 873
 874         resource_list_add(rl, type, rid, start, start + count - 1, count);
 875         if (NULL != resource_list_alloc(rl, device_get_parent(dev), dev,
 876             type, &rid, start, start + count - 1, count, 0))
 877                 return 0;
 878         else
 879                 return ENOMEM;
 880 }
 881
 882 static int
 883 pccard_get_resource(device_t dev, device_t child, int type, int rid,
 884     u_long *startp, u_long *countp)
 885 {
 886         struct pccard_ivar *devi = PCCARD_IVAR(child);
 887         struct resource_list *rl = &devi->resources;
 888         struct resource_list_entry *rle;
 889
 890         rle = resource_list_find(rl, type, rid);
 891         if (rle == NULL)
 892                 return (ENOENT);
 893
 894         if (startp != NULL)
 895                 *startp = rle->start;
 896         if (countp != NULL)
 897                 *countp = rle->count;
 898
 899         return (0);
 900 }
 901
 902 static void
 903 pccard_delete_resource(device_t dev, device_t child, int type, int rid)
 904 {
 905         struct pccard_ivar *devi = PCCARD_IVAR(child);
 906         struct resource_list *rl = &devi->resources;
 907         resource_list_delete(rl, type, rid);
 908 }
 909
 910 static int
 911 pccard_set_res_flags(device_t dev, device_t child, int type, int rid,
 912     u_int32_t flags)
 913 {
 914         return (CARD_SET_RES_FLAGS(device_get_parent(dev), child, type,
 915             rid, flags));
 916 }
 917
 918 static int
 919 pccard_set_memory_offset(device_t dev, device_t child, int rid,
 920     u_int32_t offset, u_int32_t *deltap)
 921
 922 {
 923         return (CARD_SET_MEMORY_OFFSET(device_get_parent(dev), child, rid,
 924             offset, deltap));
 925 }
 926
 927 static void
 928 pccard_probe_nomatch(device_t bus, device_t child)
 929 {
 930         struct pccard_ivar *devi = PCCARD_IVAR(child);
 931         struct pccard_function *func = devi->fcn;
 932         struct pccard_softc *sc = PCCARD_SOFTC(bus);
 933
 934         device_printf(bus, "<unknown card>");
 935         printf(" (manufacturer=0x%04x, product=0x%04x) at function %d\n",
 936           sc->card.manufacturer, sc->card.product, func->number);
 937         device_printf(bus, "   CIS info: %s, %s, %s\n", sc->card.cis1_info[0],
 938           sc->card.cis1_info[1], sc->card.cis1_info[2]);
 939         return;
 940 }
 941
 942 static int
 943 pccard_child_location_str(device_t bus, device_t child, char *buf,
 944     size_t buflen)
 945 {
 946         struct pccard_ivar *devi = PCCARD_IVAR(child);
 947         struct pccard_function *func = devi->fcn;
 948
 949         snprintf(buf, buflen, "function=%d", func->number);
 950         return (0);
 951 }
 952
 953 static int
 954 pccard_child_pnpinfo_str(device_t bus, device_t child, char *buf,
 955     size_t buflen)
 956 {
 957         struct pccard_ivar *devi = PCCARD_IVAR(child);
 958         struct pccard_function *func = devi->fcn;
 959         struct pccard_softc *sc = PCCARD_SOFTC(bus);
 960
 961         snprintf(buf, buflen, "manufacturer=0x%04x product=0x%04x "
 962             "cisvendor=\"%s\" cisproduct=\"%s\" function_type=%d",
 963             sc->card.manufacturer, sc->card.product, sc->card.cis1_info[0],
 964             sc->card.cis1_info[1], func->function);
 965         return (0);
 966 }
 967
 968 static int
 969 pccard_read_ivar(device_t bus, device_t child, int which, u_char *result)
 970 {
 971         struct pccard_ivar *devi = PCCARD_IVAR(child);
 972         struct pccard_function *func = devi->fcn;
 973         struct pccard_softc *sc = PCCARD_SOFTC(bus);
 974
 975         switch (which) {
 976         default:
 977         case PCCARD_IVAR_ETHADDR:
 978                 bcopy(func->pf_funce_lan_nid, result, ETHER_ADDR_LEN);
 979                 break;
 980         case PCCARD_IVAR_VENDOR:
 981                 *(u_int32_t *) result = sc->card.manufacturer;
 982                 break;
 983         case PCCARD_IVAR_PRODUCT:
 984                 *(u_int32_t *) result = sc->card.product;
 985                 break;
 986         case PCCARD_IVAR_PRODEXT:
 987                 *(u_int16_t *) result = sc->card.prodext;
 988                 break;
 989         case PCCARD_IVAR_FUNCTION:
 990                 *(u_int32_t *) result = func->function;
 991                 break;
 992         case PCCARD_IVAR_FUNCTION_NUMBER:
 993                 if (!func) {
 994                         device_printf(bus, "No function number, bug!\n");
 995                         return (ENOENT);
 996                 }
 997                 *(u_int32_t *) result = func->number;
 998                 break;
 999         case PCCARD_IVAR_VENDOR_STR:
1000                 *(char **) result = sc->card.cis1_info[0];
1001                 break;
1002         case PCCARD_IVAR_PRODUCT_STR:
1003                 *(char **) result = sc->card.cis1_info[1];
1004                 break;
1005         case PCCARD_IVAR_CIS3_STR:
1006                 *(char **) result = sc->card.cis1_info[2];
1007                 break;
1008         case PCCARD_IVAR_CIS4_STR:
1009                 *(char **) result = sc->card.cis1_info[3];
1010                 break;
1011         }
1012         return (0);
1013 }
1014
1015 static void
1016 pccard_driver_added(device_t dev, driver_t *driver)
1017 {
1018         struct pccard_softc *sc = PCCARD_SOFTC(dev);
1019         struct pccard_function *pf;
1020         device_t child;
1021
1022         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
1023                 if (STAILQ_EMPTY(&pf->cfe_head))
1024                         continue;
1025                 child = pf->dev;
1026                 if (device_get_state(child) != DS_NOTPRESENT)
1027                         continue;
1028                 if (pccard_function_enable(pf) == 0 &&
1029                     device_probe_and_attach(child) == 0) {
1030                         DEVPRINTF((sc->dev, "function %d CCR at %d "
1031                             "offset %x: %x %x %x %x, %x %x %x %x, %x\n",
1032                             pf->number, pf->pf_ccr_window, pf->pf_ccr_offset,
1033                             pccard_ccr_read(pf, 0x00),
1034                         pccard_ccr_read(pf, 0x02), pccard_ccr_read(pf, 0x04),
1035                         pccard_ccr_read(pf, 0x06), pccard_ccr_read(pf, 0x0A),
1036                         pccard_ccr_read(pf, 0x0C), pccard_ccr_read(pf, 0x0E),
1037                         pccard_ccr_read(pf, 0x10), pccard_ccr_read(pf, 0x12)));
1038                 } else {
1039                         if (pf->cfe != NULL)
1040                                 pccard_function_disable(pf);
1041                 }
1042         }
1043         return;
1044 }
1045
1046 static struct resource *
1047 pccard_alloc_resource(device_t dev, device_t child, int type, int *rid,
1048     u_long start, u_long end, u_long count, u_int flags)
1049 {
1050         struct pccard_ivar *dinfo;
1051         struct resource_list_entry *rle = 0;
1052         int passthrough = (device_get_parent(child) != dev);
1053         struct resource *r = NULL;
1054
1055         if (passthrough) {
1056                 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
1057                     type, rid, start, end, count, flags));
1058         }
1059
1060         dinfo = device_get_ivars(child);
1061         rle = resource_list_find(&dinfo->resources, type, *rid);
1062
1063         if (rle == NULL)
1064                 return (NULL);          /* no resource of that type/rid */
1065
1066         if (rle->res == NULL) {
1067                 switch(type) {
1068                 case SYS_RES_IOPORT:
1069                         r = bus_alloc_resource(dev, type, rid, start, end,
1070                             count, rman_make_alignment_flags(count));
1071                         if (r == NULL)
1072                                 goto bad;
1073                         resource_list_add(&dinfo->resources, type, *rid,
1074                             rman_get_start(r), rman_get_end(r), count);
1075                         rle = resource_list_find(&dinfo->resources, type, *rid);
1076                         if (!rle)
1077                                 goto bad;
1078                         rle->res = r;
1079                         break;
1080                 case SYS_RES_MEMORY:
1081                         break;
1082                 case SYS_RES_IRQ:
1083                         break;
1084                 }
1085                 return (rle->res);
1086         }
1087         if (rle->res->r_dev != dev)
1088                 return (NULL);
1089         bus_release_resource(dev, type, *rid, rle->res);
1090         rle->res = NULL;
1091         switch(type) {
1092         case SYS_RES_IOPORT:
1093         case SYS_RES_MEMORY:
1094                 if (!(flags & RF_ALIGNMENT_MASK))
1095                         flags |= rman_make_alignment_flags(rle->count);
1096                 break;
1097         case SYS_RES_IRQ:
1098                 flags |= RF_SHAREABLE;
1099                 break;
1100         }
1101         rle->res = resource_list_alloc(&dinfo->resources, dev, child,
1102             type, rid, rle->start, rle->end, rle->count, flags);
1103         return (rle->res);
1104 bad:;
1105         device_printf(dev, "WARNING: Resource not reserved by pccard\n");
1106         return (NULL);
1107 }
1108
1109 static int
1110 pccard_release_resource(device_t dev, device_t child, int type, int rid,
1111     struct resource *r)
1112 {
1113         struct pccard_ivar *dinfo;
1114         int passthrough = (device_get_parent(child) != dev);
1115         struct resource_list_entry *rle = 0;
1116         int ret;
1117         int flags;
1118
1119         if (passthrough)
1120                 return BUS_RELEASE_RESOURCE(device_get_parent(dev), child,
1121                     type, rid, r);
1122
1123         dinfo = device_get_ivars(child);
1124
1125         rle = resource_list_find(&dinfo->resources, type, rid);
1126
1127         if (!rle) {
1128                 device_printf(dev, "Allocated resource not found, "
1129                     "%d %x %lx %lx\n",
1130                     type, rid, rman_get_start(r), rman_get_size(r));
1131                 return ENOENT;
1132         }
1133         if (!rle->res) {
1134                 device_printf(dev, "Allocated resource not recorded\n");
1135                 return ENOENT;
1136         }
1137
1138         ret = BUS_RELEASE_RESOURCE(device_get_parent(dev), child,
1139             type, rid, r);
1140         switch(type) {
1141         case SYS_RES_IOPORT:
1142         case SYS_RES_MEMORY:
1143                 flags = rman_make_alignment_flags(rle->count);
1144                 break;
1145         case SYS_RES_IRQ:
1146                 flags = RF_SHAREABLE;
1147                 break;
1148         default:
1149                 flags = 0;
1150         }
1151         rle->res = bus_alloc_resource(dev, type, &rid,
1152             rle->start, rle->end, rle->count, flags);
1153         if (rle->res == NULL)
1154                 device_printf(dev, "release_resource: "
1155                     "unable to reaquire resource\n");
1156         return ret;
1157 }
1158
1159 static void
1160 pccard_child_detached(device_t parent, device_t dev)
1161 {
1162         struct pccard_ivar *ivar = PCCARD_IVAR(dev);
1163         struct pccard_function *pf = ivar->fcn;
1164
1165         pccard_function_disable(pf);
1166 }
1167
1168 static void
1169 pccard_intr(void *arg)
1170 {
1171         struct pccard_function *pf = (struct pccard_function*) arg;
1172         int reg;
1173         int doisr = 1;
1174
1175         /*
1176          * MFC cards know if they interrupted, so we have to ack the
1177          * interrupt and call the ISR.  Non-MFC cards don't have these
1178          * bits, so they always get called.  Many non-MFC cards have
1179          * this bit set always upon read, but some do not.
1180          *
1181          * We always ack the interrupt, even if there's no ISR
1182          * for the card.  This is done on the theory that acking
1183          * the interrupt will pacify the card enough to keep an
1184          * interrupt storm from happening.  Of course this won't
1185          * help in the non-MFC case.
1186          */
1187         if (pccard_mfc(pf->sc)) {
1188                 reg = pccard_ccr_read(pf, PCCARD_CCR_STATUS);
1189                 if (reg & PCCARD_CCR_STATUS_INTR)
1190                         pccard_ccr_write(pf, PCCARD_CCR_STATUS,
1191                             reg & ~PCCARD_CCR_STATUS_INTR);
1192                 else
1193                         doisr = 0;
1194         }
1195         if (pf->intr_handler != NULL && doisr)
1196                 pf->intr_handler(pf->intr_handler_arg);
1197 }
1198
1199 static int
1200 pccard_setup_intr(device_t dev, device_t child, struct resource *irq,
1201     int flags, driver_intr_t *intr, void *arg, void **cookiep)
1202 {
1203         struct pccard_softc *sc = PCCARD_SOFTC(dev);
1204         struct pccard_ivar *ivar = PCCARD_IVAR(child);
1205         struct pccard_function *func = ivar->fcn;
1206         int err;
1207
1208         if (func->intr_handler != NULL)
1209                 panic("Only one interrupt handler per function allowed");
1210         err = bus_generic_setup_intr(dev, child, irq, flags, pccard_intr,
1211             func, cookiep);
1212         if (err != 0)
1213                 return (err);
1214         func->intr_handler = intr;
1215         func->intr_handler_arg = arg;
1216         func->intr_handler_cookie = *cookiep;
1217         if (pccard_mfc(sc)) {
1218                 pccard_ccr_write(func, PCCARD_CCR_OPTION,
1219                     pccard_ccr_read(func, PCCARD_CCR_OPTION) |
1220                     PCCARD_CCR_OPTION_IREQ_ENABLE);
1221         }
1222         return (0);
1223 }
1224
1225 static int
1226 pccard_teardown_intr(device_t dev, device_t child, struct resource *r,
1227     void *cookie)
1228 {
1229         struct pccard_softc *sc = PCCARD_SOFTC(dev);
1230         struct pccard_ivar *ivar = PCCARD_IVAR(child);
1231         struct pccard_function *func = ivar->fcn;
1232         int ret;
1233
1234         if (pccard_mfc(sc)) {
1235                 pccard_ccr_write(func, PCCARD_CCR_OPTION,
1236                     pccard_ccr_read(func, PCCARD_CCR_OPTION) &
1237                     ~PCCARD_CCR_OPTION_IREQ_ENABLE);
1238         }
1239         ret = bus_generic_teardown_intr(dev, child, r, cookie);
1240         if (ret == 0) {
1241                 func->intr_handler = NULL;
1242                 func->intr_handler_arg = NULL;
1243                 func->intr_handler_cookie = NULL;
1244         }
1245
1246         return (ret);
1247 }
1248
1249 static device_method_t pccard_methods[] = {
1250         /* Device interface */
1251         DEVMETHOD(device_probe,         pccard_probe),
1252         DEVMETHOD(device_attach,        pccard_attach),
1253         DEVMETHOD(device_detach,        pccard_detach),
1254         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
1255         DEVMETHOD(device_suspend,       pccard_suspend),
1256         DEVMETHOD(device_resume,        pccard_resume),
1257
1258         /* Bus interface */
1259         DEVMETHOD(bus_print_child,      pccard_print_child),
1260         DEVMETHOD(bus_driver_added,     pccard_driver_added),
1261         DEVMETHOD(bus_child_detached,   pccard_child_detached),
1262         DEVMETHOD(bus_alloc_resource,   pccard_alloc_resource),
1263         DEVMETHOD(bus_release_resource, pccard_release_resource),
1264         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
1265         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
1266         DEVMETHOD(bus_setup_intr,       pccard_setup_intr),
1267         DEVMETHOD(bus_teardown_intr,    pccard_teardown_intr),
1268         DEVMETHOD(bus_set_resource,     pccard_set_resource),
1269         DEVMETHOD(bus_get_resource,     pccard_get_resource),
1270         DEVMETHOD(bus_delete_resource,  pccard_delete_resource),
1271         DEVMETHOD(bus_probe_nomatch,    pccard_probe_nomatch),
1272         DEVMETHOD(bus_read_ivar,        pccard_read_ivar),
1273         DEVMETHOD(bus_child_pnpinfo_str, pccard_child_pnpinfo_str),
1274         DEVMETHOD(bus_child_location_str, pccard_child_location_str),
1275
1276         /* Card Interface */
1277         DEVMETHOD(card_set_res_flags,   pccard_set_res_flags),
1278         DEVMETHOD(card_set_memory_offset, pccard_set_memory_offset),
1279         DEVMETHOD(card_get_type,        pccard_card_gettype),
1280         DEVMETHOD(card_attach_card,     pccard_attach_card),
1281         DEVMETHOD(card_detach_card,     pccard_detach_card),
1282         DEVMETHOD(card_compat_do_probe, pccard_compat_do_probe),
1283         DEVMETHOD(card_compat_do_attach, pccard_compat_do_attach),
1284         DEVMETHOD(card_do_product_lookup, pccard_do_product_lookup),
1285
1286         { 0, 0 }
1287 };
1288
1289 static driver_t pccard_driver = {
1290         "pccard",
1291         pccard_methods,
1292         sizeof(struct pccard_softc)
1293 };
1294
1295 devclass_t      pccard_devclass;
1296
1297 /* Maybe we need to have a slot device? */
1298 DRIVER_MODULE(pccard, pcic, pccard_driver, pccard_devclass, 0, 0);
1299 DRIVER_MODULE(pccard, pc98pcic, pccard_driver, pccard_devclass, 0, 0);
1300 DRIVER_MODULE(pccard, cbb, pccard_driver, pccard_devclass, 0, 0);
1301 DRIVER_MODULE(pccard, tcic, pccard_driver, pccard_devclass, 0, 0);
1302 MODULE_VERSION(pccard, 1);
1303 /*MODULE_DEPEND(pccard, pcic, 1, 1, 1);*/