The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/pccard/pccard.c

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    1 /*      $NetBSD: pcmcia.c,v 1.23 2000/07/28 19:17:02 drochner Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 1997 Marc Horowitz.  All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. All advertising materials mentioning features or use of this software
   15  *    must display the following acknowledgement:
   16  *      This product includes software developed by Marc Horowitz.
   17  * 4. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: releng/7.4/sys/dev/pccard/pccard.c 170849 2007-06-16 23:33:57Z imp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/malloc.h>
   38 #include <sys/module.h>
   39 #include <sys/kernel.h>
   40 #include <sys/queue.h>
   41 #include <sys/sysctl.h>
   42 #include <sys/types.h>
   43 
   44 #include <sys/bus.h>
   45 #include <machine/bus.h>
   46 #include <sys/rman.h>
   47 #include <machine/resource.h>
   48 
   49 #include <net/ethernet.h>
   50 
   51 #include <dev/pccard/pccardreg.h>
   52 #include <dev/pccard/pccardvar.h>
   53 #include <dev/pccard/pccardvarp.h>
   54 #include <dev/pccard/pccard_cis.h>
   55 
   56 #include "power_if.h"
   57 #include "card_if.h"
   58 
   59 #define PCCARDDEBUG
   60 
   61 /* sysctl vars */
   62 SYSCTL_NODE(_hw, OID_AUTO, pccard, CTLFLAG_RD, 0, "PCCARD parameters");
   63 
   64 int     pccard_debug = 0;
   65 TUNABLE_INT("hw.pccard.debug", &pccard_debug);
   66 SYSCTL_INT(_hw_pccard, OID_AUTO, debug, CTLFLAG_RW,
   67     &pccard_debug, 0,
   68   "pccard debug");
   69 
   70 int     pccard_cis_debug = 0;
   71 TUNABLE_INT("hw.pccard.cis_debug", &pccard_cis_debug);
   72 SYSCTL_INT(_hw_pccard, OID_AUTO, cis_debug, CTLFLAG_RW,
   73     &pccard_cis_debug, 0, "pccard CIS debug");
   74 
   75 #ifdef PCCARDDEBUG
   76 #define DPRINTF(arg) if (pccard_debug) printf arg
   77 #define DEVPRINTF(arg) if (pccard_debug) device_printf arg
   78 #define PRVERBOSE(arg) printf arg
   79 #define DEVPRVERBOSE(arg) device_printf arg
   80 #else
   81 #define DPRINTF(arg)
   82 #define DEVPRINTF(arg)
   83 #define PRVERBOSE(arg) if (bootverbose) printf arg
   84 #define DEVPRVERBOSE(arg) if (bootverbose) device_printf arg
   85 #endif
   86 
   87 static int      pccard_ccr_read(struct pccard_function *pf, int ccr);
   88 static void     pccard_ccr_write(struct pccard_function *pf, int ccr, int val);
   89 static int      pccard_attach_card(device_t dev);
   90 static int      pccard_detach_card(device_t dev);
   91 static void     pccard_function_init(struct pccard_function *pf);
   92 static void     pccard_function_free(struct pccard_function *pf);
   93 static int      pccard_function_enable(struct pccard_function *pf);
   94 static void     pccard_function_disable(struct pccard_function *pf);
   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, uint32_t flags);
  109 static int      pccard_set_memory_offset(device_t dev, device_t child, int rid,
  110                     uint32_t offset, uint32_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 int      pccard_filter(void *arg);
  122 static void     pccard_intr(void *arg);
  123 static int      pccard_setup_intr(device_t dev, device_t child,
  124                     struct resource *irq, int flags, driver_filter_t *filt, 
  125                     driver_intr_t *intr, void *arg, void **cookiep);
  126 static int      pccard_teardown_intr(device_t dev, device_t child,
  127                     struct resource *r, void *cookie);
  128 
  129 static const struct pccard_product *
  130 pccard_do_product_lookup(device_t bus, device_t dev,
  131                          const struct pccard_product *tab, size_t ent_size,
  132                          pccard_product_match_fn matchfn);
  133 
  134 
  135 static int
  136 pccard_ccr_read(struct pccard_function *pf, int ccr)
  137 {
  138         return (bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
  139             pf->pf_ccr_offset + ccr));
  140 }
  141 
  142 static void
  143 pccard_ccr_write(struct pccard_function *pf, int ccr, int val)
  144 {
  145         if ((pf->ccr_mask) & (1 << (ccr / 2))) {
  146                 bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh,
  147                     pf->pf_ccr_offset + ccr, val);
  148         }
  149 }
  150 
  151 static int
  152 pccard_set_default_descr(device_t dev)
  153 {
  154         const char *vendorstr, *prodstr;
  155         uint32_t vendor, prod;
  156         char *str;
  157 
  158         if (pccard_get_vendor_str(dev, &vendorstr))
  159                 return (0);
  160         if (pccard_get_product_str(dev, &prodstr))
  161                 return (0);
  162         if (vendorstr != NULL && prodstr != NULL) {
  163                 str = malloc(strlen(vendorstr) + strlen(prodstr) + 2, M_DEVBUF,
  164                     M_WAITOK);
  165                 sprintf(str, "%s %s", vendorstr, prodstr);
  166                 device_set_desc_copy(dev, str);
  167                 free(str, M_DEVBUF);
  168         } else {
  169                 if (pccard_get_vendor(dev, &vendor))
  170                         return (0);
  171                 if (pccard_get_product(dev, &prod))
  172                         return (0);
  173                 str = malloc(100, M_DEVBUF, M_WAITOK);
  174                 snprintf(str, 100, "vendor=0x%x product=0x%x", vendor, prod);
  175                 device_set_desc_copy(dev, str);
  176                 free(str, M_DEVBUF);
  177         }
  178         return (0);
  179 }
  180 
  181 static int
  182 pccard_attach_card(device_t dev)
  183 {
  184         struct pccard_softc *sc = PCCARD_SOFTC(dev);
  185         struct pccard_function *pf;
  186         struct pccard_ivar *ivar;
  187         device_t child;
  188         int i;
  189 
  190         if (!STAILQ_EMPTY(&sc->card.pf_head)) {
  191                 if (bootverbose || pccard_debug)
  192                         device_printf(dev, "Card already inserted.\n");
  193         }
  194 
  195         DEVPRINTF((dev, "chip_socket_enable\n"));
  196         POWER_ENABLE_SOCKET(device_get_parent(dev), dev);
  197 
  198         DEVPRINTF((dev, "read_cis\n"));
  199         pccard_read_cis(sc);
  200 
  201         DEVPRINTF((dev, "check_cis_quirks\n"));
  202         pccard_check_cis_quirks(dev);
  203 
  204         /*
  205          * bail now if the card has no functions, or if there was an error in
  206          * the cis.
  207          */
  208 
  209         if (sc->card.error) {
  210                 device_printf(dev, "CARD ERROR!\n");
  211                 return (1);
  212         }
  213         if (STAILQ_EMPTY(&sc->card.pf_head)) {
  214                 device_printf(dev, "Card has no functions!\n");
  215                 return (1);
  216         }
  217 
  218         if (bootverbose || pccard_debug)
  219                 pccard_print_cis(dev);
  220 
  221         DEVPRINTF((dev, "functions scanning\n"));
  222         i = -1;
  223         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
  224                 i++;
  225                 if (STAILQ_EMPTY(&pf->cfe_head)) {
  226                         device_printf(dev,
  227                             "Function %d has no config entries.!\n", i);
  228                         continue;
  229                 }
  230                 pf->sc = sc;
  231                 pf->cfe = NULL;
  232                 pf->dev = NULL;
  233         }
  234         DEVPRINTF((dev, "Card has %d functions. pccard_mfc is %d\n", i + 1,
  235             pccard_mfc(sc)));
  236 
  237         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
  238                 if (STAILQ_EMPTY(&pf->cfe_head))
  239                         continue;
  240                 /*
  241                  * In NetBSD, the drivers are responsible for activating
  242                  * each function of a card.  I think that in FreeBSD we
  243                  * want to activate them enough for the usual bus_*_resource
  244                  * routines will do the right thing.  This many mean a
  245                  * departure from the current NetBSD model.
  246                  *
  247                  * This seems to work well in practice for most cards.
  248                  * However, there are two cases that are problematic.
  249                  * If a driver wishes to pick and chose which config
  250                  * entry to use, then this method falls down.  These
  251                  * are usually older cards.  In addition, there are
  252                  * some cards that have multiple hardware units on the
  253                  * cards, but presents only one CIS chain.  These cards
  254                  * are combination cards, but only one of these units
  255                  * can be on at a time.
  256                  */
  257                 ivar = malloc(sizeof(struct pccard_ivar), M_DEVBUF,
  258                     M_WAITOK | M_ZERO);
  259                 resource_list_init(&ivar->resources);
  260                 child = device_add_child(dev, NULL, -1);
  261                 device_set_ivars(child, ivar);
  262                 ivar->pf = pf;
  263                 pf->dev = child;
  264                 /*
  265                  * XXX We might want to move the next three lines into
  266                  * XXX the pccard interface layer.  For the moment, this
  267                  * XXX is OK, but some drivers want to pick the config
  268                  * XXX entry to use as well as some address tweaks (mostly
  269                  * XXX due to bugs in decode logic that makes some
  270                  * XXX addresses illegal or broken).
  271                  */
  272                 pccard_function_init(pf);
  273                 if (sc->sc_enabled_count == 0)
  274                         POWER_ENABLE_SOCKET(device_get_parent(dev), dev);
  275                 if (pccard_function_enable(pf) == 0 &&
  276                     pccard_set_default_descr(child) == 0 &&
  277                     device_probe_and_attach(child) == 0) {
  278                         DEVPRINTF((sc->dev, "function %d CCR at %d "
  279                             "offset %x mask %x: "
  280                             "%x %x %x %x, %x %x %x %x, %x\n",
  281                             pf->number, pf->pf_ccr_window, pf->pf_ccr_offset,
  282                             pf->ccr_mask, pccard_ccr_read(pf, 0x00),
  283                         pccard_ccr_read(pf, 0x02), pccard_ccr_read(pf, 0x04),
  284                         pccard_ccr_read(pf, 0x06), pccard_ccr_read(pf, 0x0A),
  285                         pccard_ccr_read(pf, 0x0C), pccard_ccr_read(pf, 0x0E),
  286                         pccard_ccr_read(pf, 0x10), pccard_ccr_read(pf, 0x12)));
  287                 } else {
  288                         if (pf->cfe != NULL)
  289                                 pccard_function_disable(pf);
  290                 }
  291         }
  292         return (0);
  293 }
  294 
  295 static int
  296 pccard_detach_card(device_t dev)
  297 {
  298         struct pccard_softc *sc = PCCARD_SOFTC(dev);
  299         struct pccard_function *pf;
  300         struct pccard_config_entry *cfe;
  301         struct pccard_ivar *devi;
  302         int state;
  303 
  304         /*
  305          * We are running on either the PCCARD socket's event thread
  306          * or in user context detaching a device by user request.
  307          */
  308         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
  309                 if (pf->dev == NULL)
  310                         continue;
  311                 state = device_get_state(pf->dev);
  312                 if (state == DS_ATTACHED || state == DS_BUSY)
  313                         device_detach(pf->dev);
  314                 if (pf->cfe != NULL)
  315                         pccard_function_disable(pf);
  316                 pccard_function_free(pf);
  317                 devi = PCCARD_IVAR(pf->dev);
  318                 device_delete_child(dev, pf->dev);
  319                 free(devi, M_DEVBUF);
  320         }
  321         if (sc->sc_enabled_count == 0)
  322                 POWER_DISABLE_SOCKET(device_get_parent(dev), dev);
  323 
  324         while (NULL != (pf = STAILQ_FIRST(&sc->card.pf_head))) {
  325                 while (NULL != (cfe = STAILQ_FIRST(&pf->cfe_head))) {
  326                         STAILQ_REMOVE_HEAD(&pf->cfe_head, cfe_list);
  327                         free(cfe, M_DEVBUF);
  328                 }
  329                 STAILQ_REMOVE_HEAD(&sc->card.pf_head, pf_list);
  330                 free(pf, M_DEVBUF);
  331         }
  332         STAILQ_INIT(&sc->card.pf_head);
  333         return (0);
  334 }
  335 
  336 static const struct pccard_product *
  337 pccard_do_product_lookup(device_t bus, device_t dev,
  338     const struct pccard_product *tab, size_t ent_size,
  339     pccard_product_match_fn matchfn)
  340 {
  341         const struct pccard_product *ent;
  342         int matches;
  343         uint32_t vendor;
  344         uint32_t prod;
  345         const char *vendorstr;
  346         const char *prodstr;
  347         const char *cis3str;
  348         const char *cis4str;
  349 
  350 #ifdef DIAGNOSTIC
  351         if (sizeof *ent > ent_size)
  352                 panic("pccard_product_lookup: bogus ent_size %jd",
  353                     (intmax_t) ent_size);
  354 #endif
  355         if (pccard_get_vendor(dev, &vendor))
  356                 return (NULL);
  357         if (pccard_get_product(dev, &prod))
  358                 return (NULL);
  359         if (pccard_get_vendor_str(dev, &vendorstr))
  360                 return (NULL);
  361         if (pccard_get_product_str(dev, &prodstr))
  362                 return (NULL);
  363         if (pccard_get_cis3_str(dev, &cis3str))
  364                 return (NULL);
  365         if (pccard_get_cis4_str(dev, &cis4str))
  366                 return (NULL);
  367         for (ent = tab; ent->pp_vendor != 0; ent =
  368             (const struct pccard_product *) ((const char *) ent + ent_size)) {
  369                 matches = 1;
  370                 if (ent->pp_vendor == PCCARD_VENDOR_ANY &&
  371                     ent->pp_product == PCCARD_PRODUCT_ANY &&
  372                     ent->pp_cis[0] == NULL &&
  373                     ent->pp_cis[1] == NULL) {
  374                         if (ent->pp_name)
  375                                 device_printf(dev,
  376                                     "Total wildcard entry ignored for %s\n",
  377                                     ent->pp_name);
  378                         continue;
  379                 }
  380                 if (matches && ent->pp_vendor != PCCARD_VENDOR_ANY &&
  381                     vendor != ent->pp_vendor)
  382                         matches = 0;
  383                 if (matches && ent->pp_product != PCCARD_PRODUCT_ANY &&
  384                     prod != ent->pp_product)
  385                         matches = 0;
  386                 if (matches && ent->pp_cis[0] &&
  387                     (vendorstr == NULL ||
  388                     strcmp(ent->pp_cis[0], vendorstr) != 0))
  389                         matches = 0;
  390                 if (matches && ent->pp_cis[1] &&
  391                     (prodstr == NULL ||
  392                     strcmp(ent->pp_cis[1], prodstr) != 0))
  393                         matches = 0;
  394                 if (matches && ent->pp_cis[2] &&
  395                     (cis3str == NULL ||
  396                     strcmp(ent->pp_cis[2], cis3str) != 0))
  397                         matches = 0;
  398                 if (matches && ent->pp_cis[3] &&
  399                     (cis4str == NULL ||
  400                     strcmp(ent->pp_cis[3], cis4str) != 0))
  401                         matches = 0;
  402                 if (matchfn != NULL)
  403                         matches = (*matchfn)(dev, ent, matches);
  404                 if (matches)
  405                         return (ent);
  406         }
  407         return (NULL);
  408 }
  409 
  410 /*
  411  * Initialize a PCCARD function.  May be called as long as the function is
  412  * disabled.
  413  *
  414  * Note: pccard_function_init should not keep resources allocated.  It should
  415  * only set them up ala isa pnp, set the values in the rl lists, and return.
  416  * Any resource held after pccard_function_init is called is a bug.  However,
  417  * the bus routines to get the resources also assume that pccard_function_init
  418  * does this, so they need to be fixed too.
  419  */
  420 static void
  421 pccard_function_init(struct pccard_function *pf)
  422 {
  423         struct pccard_config_entry *cfe;
  424         struct pccard_ivar *devi = PCCARD_IVAR(pf->dev);
  425         struct resource_list *rl = &devi->resources;
  426         struct resource_list_entry *rle;
  427         struct resource *r = 0;
  428         device_t bus;
  429         u_long start, end, len;
  430         int i, rid, spaces;
  431 
  432         if (pf->pf_flags & PFF_ENABLED) {
  433                 printf("pccard_function_init: function is enabled");
  434                 return;
  435         }
  436         bus = device_get_parent(pf->dev);
  437         /* Remember which configuration entry we are using. */
  438         STAILQ_FOREACH(cfe, &pf->cfe_head, cfe_list) {
  439                 if (cfe->iftype != PCCARD_IFTYPE_IO)
  440                         continue;
  441                 spaces = 0;
  442                 for (i = 0; i < cfe->num_iospace; i++) {
  443                         start = cfe->iospace[i].start;
  444                         if (start)
  445                                 end = start + cfe->iospace[i].length - 1;
  446                         else
  447                                 end = ~0UL;
  448                         DEVPRINTF((bus, "I/O rid %d start %lx end %lx\n",
  449                             i, start, end));
  450                         rid = i;
  451                         len = cfe->iospace[i].length;
  452                         r = bus_alloc_resource(bus, SYS_RES_IOPORT, &rid,
  453                             start, end, len, rman_make_alignment_flags(len));
  454                         if (r == NULL)
  455                                 goto not_this_one;
  456                         rle = resource_list_add(rl, SYS_RES_IOPORT,
  457                             rid, rman_get_start(r), rman_get_end(r),
  458                             cfe->iospace[i].length);
  459                         if (rle == NULL)
  460                                 panic("Cannot add resource rid %d IOPORT", rid);
  461                         rle->res = r;
  462                         spaces++;
  463                 }
  464                 for (i = 0; i < cfe->num_memspace; i++) {
  465                         start = cfe->memspace[i].hostaddr;
  466                         if (start)
  467                                 end = start + cfe->memspace[i].length - 1;
  468                         else
  469                                 end = ~0UL;
  470                         DEVPRINTF((bus, "Memory rid %d start %lx end %lx\n",
  471                             i, start, end));
  472                         rid = i;
  473                         len = cfe->memspace[i].length;
  474                         r = bus_alloc_resource(bus, SYS_RES_MEMORY, &rid,
  475                             start, end, len, rman_make_alignment_flags(len));
  476                         if (r == NULL)
  477                                 goto not_this_one;
  478                         rle = resource_list_add(rl, SYS_RES_MEMORY,
  479                             rid, rman_get_start(r), rman_get_end(r),
  480                             cfe->memspace[i].length);
  481                         if (rle == NULL)
  482                                 panic("Cannot add resource rid %d MEM", rid);
  483                         rle->res = r;
  484                         spaces++;
  485                 }
  486                 if (spaces == 0) {
  487                         DEVPRINTF((bus, "Neither memory nor I/O mapped\n"));
  488                         goto not_this_one;
  489                 }
  490                 if (cfe->irqmask) {
  491                         rid = 0;
  492                         r = bus_alloc_resource_any(bus, SYS_RES_IRQ, &rid,
  493                             RF_SHAREABLE);
  494                         if (r == NULL)
  495                                 goto not_this_one;
  496                         rle = resource_list_add(rl, SYS_RES_IRQ, rid,
  497                             rman_get_start(r), rman_get_end(r), 1);
  498                         if (rle == NULL)
  499                                 panic("Cannot add resource rid %d IRQ", rid);
  500                         rle->res = r;
  501                 }
  502                 /* If we get to here, we've allocated all we need */
  503                 pf->cfe = cfe;
  504                 break;
  505             not_this_one:;
  506                 DEVPRVERBOSE((bus, "Allocation failed for cfe %d\n",
  507                     cfe->number));
  508                 resource_list_purge(rl);
  509         }
  510 }
  511 
  512 /*
  513  * Free resources allocated by pccard_function_init(), May be called as long
  514  * as the function is disabled.
  515  *
  516  * NOTE: This function should be unnecessary.  pccard_function_init should
  517  * never keep resources initialized.
  518  */
  519 static void
  520 pccard_function_free(struct pccard_function *pf)
  521 {
  522         struct pccard_ivar *devi = PCCARD_IVAR(pf->dev);
  523         struct resource_list_entry *rle;
  524 
  525         if (pf->pf_flags & PFF_ENABLED) {
  526                 printf("pccard_function_init: function is enabled");
  527                 return;
  528         }
  529 
  530         STAILQ_FOREACH(rle, &devi->resources, link) {
  531                 if (rle->res) {
  532                         if (rman_get_device(rle->res) != pf->sc->dev)
  533                                 device_printf(pf->sc->dev,
  534                                     "function_free: Resource still owned by "
  535                                     "child, oops. "
  536                                     "(type=%d, rid=%d, addr=%lx)\n",
  537                                     rle->type, rle->rid,
  538                                     rman_get_start(rle->res));
  539                         BUS_RELEASE_RESOURCE(device_get_parent(pf->sc->dev),
  540                             pf->sc->dev, rle->type, rle->rid, rle->res);
  541                         rle->res = NULL;
  542                 }
  543         }
  544         resource_list_free(&devi->resources);
  545 }
  546 
  547 static void
  548 pccard_mfc_adjust_iobase(struct pccard_function *pf, bus_addr_t addr,
  549     bus_addr_t offset, bus_size_t size)
  550 {
  551         bus_size_t iosize, tmp;
  552 
  553         if (addr != 0) {
  554                 if (pf->pf_mfc_iomax == 0) {
  555                         pf->pf_mfc_iobase = addr + offset;
  556                         pf->pf_mfc_iomax = pf->pf_mfc_iobase + size;
  557                 } else {
  558                         /* this makes the assumption that nothing overlaps */
  559                         if (pf->pf_mfc_iobase > addr + offset)
  560                                 pf->pf_mfc_iobase = addr + offset;
  561                         if (pf->pf_mfc_iomax < addr + offset + size)
  562                                 pf->pf_mfc_iomax = addr + offset + size;
  563                 }
  564         }
  565 
  566         tmp = pf->pf_mfc_iomax - pf->pf_mfc_iobase;
  567         /* round up to nearest (2^n)-1 */
  568         for (iosize = 1; iosize < tmp; iosize <<= 1)
  569                 ;
  570         iosize--;
  571 
  572         DEVPRINTF((pf->dev, "MFC: I/O base %#jx IOSIZE %#jx\n",
  573             (uintmax_t)pf->pf_mfc_iobase, (uintmax_t)(iosize + 1)));
  574         pccard_ccr_write(pf, PCCARD_CCR_IOBASE0,
  575             pf->pf_mfc_iobase & 0xff);
  576         pccard_ccr_write(pf, PCCARD_CCR_IOBASE1,
  577             (pf->pf_mfc_iobase >> 8) & 0xff);
  578         pccard_ccr_write(pf, PCCARD_CCR_IOBASE2, 0);
  579         pccard_ccr_write(pf, PCCARD_CCR_IOBASE3, 0);
  580         pccard_ccr_write(pf, PCCARD_CCR_IOSIZE, iosize);
  581 }
  582 
  583 /* Enable a PCCARD function */
  584 static int
  585 pccard_function_enable(struct pccard_function *pf)
  586 {
  587         struct pccard_function *tmp;
  588         int reg;
  589         device_t dev = pf->sc->dev;
  590 
  591         if (pf->cfe == NULL) {
  592                 DEVPRVERBOSE((dev, "No config entry could be allocated.\n"));
  593                 return (ENOMEM);
  594         }
  595 
  596         /*
  597          * Increase the reference count on the socket, enabling power, if
  598          * necessary.
  599          */
  600         pf->sc->sc_enabled_count++;
  601 
  602         if (pf->pf_flags & PFF_ENABLED) {
  603                 /*
  604                  * Don't do anything if we're already enabled.
  605                  */
  606                 return (0);
  607         }
  608 
  609         /*
  610          * it's possible for different functions' CCRs to be in the same
  611          * underlying page.  Check for that.
  612          */
  613         STAILQ_FOREACH(tmp, &pf->sc->card.pf_head, pf_list) {
  614                 if ((tmp->pf_flags & PFF_ENABLED) &&
  615                     (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) &&
  616                     ((pf->ccr_base + PCCARD_CCR_SIZE) <=
  617                     (tmp->ccr_base - tmp->pf_ccr_offset +
  618                     tmp->pf_ccr_realsize))) {
  619                         pf->pf_ccrt = tmp->pf_ccrt;
  620                         pf->pf_ccrh = tmp->pf_ccrh;
  621                         pf->pf_ccr_realsize = tmp->pf_ccr_realsize;
  622 
  623                         /*
  624                          * pf->pf_ccr_offset = (tmp->pf_ccr_offset -
  625                          * tmp->ccr_base) + pf->ccr_base;
  626                          */
  627                         /* pf->pf_ccr_offset =
  628                             (tmp->pf_ccr_offset + pf->ccr_base) -
  629                             tmp->ccr_base; */
  630                         pf->pf_ccr_window = tmp->pf_ccr_window;
  631                         break;
  632                 }
  633         }
  634         if (tmp == NULL) {
  635                 pf->ccr_rid = 0;
  636                 pf->ccr_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
  637                     &pf->ccr_rid, 0, ~0, PCCARD_MEM_PAGE_SIZE, RF_ACTIVE);
  638                 if (!pf->ccr_res)
  639                         goto bad;
  640                 DEVPRINTF((dev, "ccr_res == %lx-%lx, base=%x\n",
  641                     rman_get_start(pf->ccr_res), rman_get_end(pf->ccr_res),
  642                     pf->ccr_base));
  643                 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY,
  644                     pf->ccr_rid, PCCARD_A_MEM_ATTR);
  645                 CARD_SET_MEMORY_OFFSET(device_get_parent(dev), dev,
  646                     pf->ccr_rid, pf->ccr_base, &pf->pf_ccr_offset);
  647                 pf->pf_ccrt = rman_get_bustag(pf->ccr_res);
  648                 pf->pf_ccrh = rman_get_bushandle(pf->ccr_res);
  649                 pf->pf_ccr_realsize = 1;
  650         }
  651 
  652         reg = (pf->cfe->number & PCCARD_CCR_OPTION_CFINDEX);
  653         reg |= PCCARD_CCR_OPTION_LEVIREQ;
  654         if (pccard_mfc(pf->sc)) {
  655                 reg |= (PCCARD_CCR_OPTION_FUNC_ENABLE |
  656                         PCCARD_CCR_OPTION_ADDR_DECODE);
  657                 /* PCCARD_CCR_OPTION_IRQ_ENABLE set elsewhere as needed */
  658         }
  659         pccard_ccr_write(pf, PCCARD_CCR_OPTION, reg);
  660 
  661         reg = 0;
  662         if ((pf->cfe->flags & PCCARD_CFE_IO16) == 0)
  663                 reg |= PCCARD_CCR_STATUS_IOIS8;
  664         if (pf->cfe->flags & PCCARD_CFE_AUDIO)
  665                 reg |= PCCARD_CCR_STATUS_AUDIO;
  666         pccard_ccr_write(pf, PCCARD_CCR_STATUS, reg);
  667 
  668         pccard_ccr_write(pf, PCCARD_CCR_SOCKETCOPY, 0);
  669 
  670         if (pccard_mfc(pf->sc))
  671                 pccard_mfc_adjust_iobase(pf, 0, 0, 0);
  672 
  673 #ifdef PCCARDDEBUG
  674         if (pccard_debug) {
  675                 STAILQ_FOREACH(tmp, &pf->sc->card.pf_head, pf_list) {
  676                         device_printf(tmp->sc->dev,
  677                             "function %d CCR at %d offset %x: "
  678                             "%x %x %x %x, %x %x %x %x, %x\n",
  679                             tmp->number, tmp->pf_ccr_window,
  680                             tmp->pf_ccr_offset,
  681                             pccard_ccr_read(tmp, 0x00),
  682                             pccard_ccr_read(tmp, 0x02),
  683                             pccard_ccr_read(tmp, 0x04),
  684                             pccard_ccr_read(tmp, 0x06),
  685                             pccard_ccr_read(tmp, 0x0A),
  686                             pccard_ccr_read(tmp, 0x0C),
  687                             pccard_ccr_read(tmp, 0x0E),
  688                             pccard_ccr_read(tmp, 0x10),
  689                             pccard_ccr_read(tmp, 0x12));
  690                 }
  691         }
  692 #endif
  693         pf->pf_flags |= PFF_ENABLED;
  694         return (0);
  695 
  696  bad:
  697         /*
  698          * Decrement the reference count, and power down the socket, if
  699          * necessary.
  700          */
  701         pf->sc->sc_enabled_count--;
  702         DEVPRINTF((dev, "bad --enabled_count = %d\n", pf->sc->sc_enabled_count));
  703 
  704         return (1);
  705 }
  706 
  707 /* Disable PCCARD function. */
  708 static void
  709 pccard_function_disable(struct pccard_function *pf)
  710 {
  711         struct pccard_function *tmp;
  712         device_t dev = pf->sc->dev;
  713 
  714         if (pf->cfe == NULL)
  715                 panic("pccard_function_disable: function not initialized");
  716 
  717         if ((pf->pf_flags & PFF_ENABLED) == 0) {
  718                 /*
  719                  * Don't do anything if we're already disabled.
  720                  */
  721                 return;
  722         }
  723 
  724         if (pf->intr_handler != NULL) {
  725                 struct pccard_ivar *devi = PCCARD_IVAR(pf->dev);
  726                 struct resource_list_entry *rle =
  727                     resource_list_find(&devi->resources, SYS_RES_IRQ, 0);
  728                 if (rle == NULL)
  729                         panic("Can't disable an interrupt with no IRQ res\n");
  730                 BUS_TEARDOWN_INTR(dev, pf->dev, rle->res,
  731                     pf->intr_handler_cookie);
  732         }
  733 
  734         /*
  735          * it's possible for different functions' CCRs to be in the same
  736          * underlying page.  Check for that.  Note we mark us as disabled
  737          * first to avoid matching ourself.
  738          */
  739 
  740         pf->pf_flags &= ~PFF_ENABLED;
  741         STAILQ_FOREACH(tmp, &pf->sc->card.pf_head, pf_list) {
  742                 if ((tmp->pf_flags & PFF_ENABLED) &&
  743                     (pf->ccr_base >= (tmp->ccr_base - tmp->pf_ccr_offset)) &&
  744                     ((pf->ccr_base + PCCARD_CCR_SIZE) <=
  745                     (tmp->ccr_base - tmp->pf_ccr_offset +
  746                     tmp->pf_ccr_realsize)))
  747                         break;
  748         }
  749 
  750         /* Not used by anyone else; unmap the CCR. */
  751         if (tmp == NULL) {
  752                 bus_release_resource(dev, SYS_RES_MEMORY, pf->ccr_rid,
  753                     pf->ccr_res);
  754                 pf->ccr_res = NULL;
  755         }
  756 
  757         /*
  758          * Decrement the reference count, and power down the socket, if
  759          * necessary.
  760          */
  761         pf->sc->sc_enabled_count--;
  762 }
  763 
  764 #define PCCARD_NPORT    2
  765 #define PCCARD_NMEM     5
  766 #define PCCARD_NIRQ     1
  767 #define PCCARD_NDRQ     0
  768 
  769 static int
  770 pccard_probe(device_t dev)
  771 {
  772         device_set_desc(dev, "16-bit PCCard bus");
  773         return (0);
  774 }
  775 
  776 static int
  777 pccard_attach(device_t dev)
  778 {
  779         struct pccard_softc *sc = PCCARD_SOFTC(dev);
  780         int err;
  781 
  782         sc->dev = dev;
  783         sc->sc_enabled_count = 0;
  784         if ((err = pccard_device_create(sc)) != 0)
  785                 return  (err);
  786         STAILQ_INIT(&sc->card.pf_head);
  787         return (bus_generic_attach(dev));
  788 }
  789 
  790 static int
  791 pccard_detach(device_t dev)
  792 {
  793         pccard_detach_card(dev);
  794         pccard_device_destroy(device_get_softc(dev));
  795         return (0);
  796 }
  797 
  798 static int
  799 pccard_suspend(device_t self)
  800 {
  801         pccard_detach_card(self);
  802         return (0);
  803 }
  804 
  805 static
  806 int
  807 pccard_resume(device_t self)
  808 {
  809         return (0);
  810 }
  811 
  812 static void
  813 pccard_print_resources(struct resource_list *rl, const char *name, int type,
  814     int count, const char *format)
  815 {
  816         struct resource_list_entry *rle;
  817         int printed;
  818         int i;
  819 
  820         printed = 0;
  821         for (i = 0; i < count; i++) {
  822                 rle = resource_list_find(rl, type, i);
  823                 if (rle != NULL) {
  824                         if (printed == 0)
  825                                 printf(" %s ", name);
  826                         else if (printed > 0)
  827                                 printf(",");
  828                         printed++;
  829                         printf(format, rle->start);
  830                         if (rle->count > 1) {
  831                                 printf("-");
  832                                 printf(format, rle->start + rle->count - 1);
  833                         }
  834                 } else if (i > 3) {
  835                         /* check the first few regardless */
  836                         break;
  837                 }
  838         }
  839 }
  840 
  841 static int
  842 pccard_print_child(device_t dev, device_t child)
  843 {
  844         struct pccard_ivar *devi = PCCARD_IVAR(child);
  845         struct resource_list *rl = &devi->resources;
  846         int retval = 0;
  847 
  848         retval += bus_print_child_header(dev, child);
  849         retval += printf(" at");
  850 
  851         if (devi != NULL) {
  852                 pccard_print_resources(rl, "port", SYS_RES_IOPORT,
  853                     PCCARD_NPORT, "%#lx");
  854                 pccard_print_resources(rl, "iomem", SYS_RES_MEMORY,
  855                     PCCARD_NMEM, "%#lx");
  856                 pccard_print_resources(rl, "irq", SYS_RES_IRQ, PCCARD_NIRQ,
  857                     "%ld");
  858                 pccard_print_resources(rl, "drq", SYS_RES_DRQ, PCCARD_NDRQ,
  859                     "%ld");
  860                 retval += printf(" function %d config %d", devi->pf->number,
  861                     devi->pf->cfe->number);
  862         }
  863 
  864         retval += bus_print_child_footer(dev, child);
  865 
  866         return (retval);
  867 }
  868 
  869 static int
  870 pccard_set_resource(device_t dev, device_t child, int type, int rid,
  871     u_long start, u_long count)
  872 {
  873         struct pccard_ivar *devi = PCCARD_IVAR(child);
  874         struct resource_list *rl = &devi->resources;
  875 
  876         if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
  877             && type != SYS_RES_IRQ && type != SYS_RES_DRQ)
  878                 return (EINVAL);
  879         if (rid < 0)
  880                 return (EINVAL);
  881         if (type == SYS_RES_IOPORT && rid >= PCCARD_NPORT)
  882                 return (EINVAL);
  883         if (type == SYS_RES_MEMORY && rid >= PCCARD_NMEM)
  884                 return (EINVAL);
  885         if (type == SYS_RES_IRQ && rid >= PCCARD_NIRQ)
  886                 return (EINVAL);
  887         if (type == SYS_RES_DRQ && rid >= PCCARD_NDRQ)
  888                 return (EINVAL);
  889 
  890         resource_list_add(rl, type, rid, start, start + count - 1, count);
  891         if (NULL != resource_list_alloc(rl, device_get_parent(dev), dev,
  892             type, &rid, start, start + count - 1, count, 0))
  893                 return 0;
  894         else
  895                 return ENOMEM;
  896 }
  897 
  898 static int
  899 pccard_get_resource(device_t dev, device_t child, int type, int rid,
  900     u_long *startp, u_long *countp)
  901 {
  902         struct pccard_ivar *devi = PCCARD_IVAR(child);
  903         struct resource_list *rl = &devi->resources;
  904         struct resource_list_entry *rle;
  905 
  906         rle = resource_list_find(rl, type, rid);
  907         if (rle == NULL)
  908                 return (ENOENT);
  909 
  910         if (startp != NULL)
  911                 *startp = rle->start;
  912         if (countp != NULL)
  913                 *countp = rle->count;
  914 
  915         return (0);
  916 }
  917 
  918 static void
  919 pccard_delete_resource(device_t dev, device_t child, int type, int rid)
  920 {
  921         struct pccard_ivar *devi = PCCARD_IVAR(child);
  922         struct resource_list *rl = &devi->resources;
  923         resource_list_delete(rl, type, rid);
  924 }
  925 
  926 static int
  927 pccard_set_res_flags(device_t dev, device_t child, int type, int rid,
  928     uint32_t flags)
  929 {
  930         return (CARD_SET_RES_FLAGS(device_get_parent(dev), child, type,
  931             rid, flags));
  932 }
  933 
  934 static int
  935 pccard_set_memory_offset(device_t dev, device_t child, int rid,
  936     uint32_t offset, uint32_t *deltap)
  937 
  938 {
  939         return (CARD_SET_MEMORY_OFFSET(device_get_parent(dev), child, rid,
  940             offset, deltap));
  941 }
  942 
  943 static void
  944 pccard_probe_nomatch(device_t bus, device_t child)
  945 {
  946         struct pccard_ivar *devi = PCCARD_IVAR(child);
  947         struct pccard_function *pf = devi->pf;
  948         struct pccard_softc *sc = PCCARD_SOFTC(bus);
  949         int i;
  950 
  951         device_printf(bus, "<unknown card>");
  952         printf(" (manufacturer=0x%04x, product=0x%04x, function_type=%d) "
  953             "at function %d\n", sc->card.manufacturer, sc->card.product,
  954             pf->function, pf->number);
  955         device_printf(bus, "   CIS info: ");
  956         for (i = 0; sc->card.cis1_info[i] != NULL && i < 4; i++)
  957                 printf("%s%s", i > 0 ? ", " : "", sc->card.cis1_info[i]);
  958         printf("\n");
  959         return;
  960 }
  961 
  962 static int
  963 pccard_child_location_str(device_t bus, device_t child, char *buf,
  964     size_t buflen)
  965 {
  966         struct pccard_ivar *devi = PCCARD_IVAR(child);
  967         struct pccard_function *pf = devi->pf;
  968 
  969         snprintf(buf, buflen, "function=%d", pf->number);
  970         return (0);
  971 }
  972 
  973 /* XXX Maybe this should be in subr_bus? */
  974 static void
  975 pccard_safe_quote(char *dst, const char *src, size_t len)
  976 {
  977         char *walker = dst, *ep = dst + len - 1;
  978 
  979         if (len == 0)
  980                 return;
  981         while (src != NULL && walker < ep)
  982         {
  983                 if (*src == '"') {
  984                         if (ep - walker < 2)
  985                                 break;
  986                         *walker++ = '\\';
  987                 }
  988                 *walker++ = *src++;
  989         }
  990         *walker = '\0';
  991 }
  992 
  993 static int
  994 pccard_child_pnpinfo_str(device_t bus, device_t child, char *buf,
  995     size_t buflen)
  996 {
  997         struct pccard_ivar *devi = PCCARD_IVAR(child);
  998         struct pccard_function *pf = devi->pf;
  999         struct pccard_softc *sc = PCCARD_SOFTC(bus);
 1000         char cis0[128], cis1[128];
 1001 
 1002         pccard_safe_quote(cis0, sc->card.cis1_info[0], sizeof(cis0));
 1003         pccard_safe_quote(cis1, sc->card.cis1_info[1], sizeof(cis1));
 1004         snprintf(buf, buflen, "manufacturer=0x%04x product=0x%04x "
 1005             "cisvendor=\"%s\" cisproduct=\"%s\" function_type=%d",
 1006             sc->card.manufacturer, sc->card.product, cis0, cis1, pf->function);
 1007         return (0);
 1008 }
 1009 
 1010 static int
 1011 pccard_read_ivar(device_t bus, device_t child, int which, u_char *result)
 1012 {
 1013         struct pccard_ivar *devi = PCCARD_IVAR(child);
 1014         struct pccard_function *pf = devi->pf;
 1015         struct pccard_softc *sc = PCCARD_SOFTC(bus);
 1016 
 1017         if (!pf)
 1018                 panic("No pccard function pointer");
 1019         switch (which) {
 1020         default:
 1021                 return (EINVAL);
 1022         case PCCARD_IVAR_ETHADDR:
 1023                 bcopy(pf->pf_funce_lan_nid, result, ETHER_ADDR_LEN);
 1024                 break;
 1025         case PCCARD_IVAR_VENDOR:
 1026                 *(uint32_t *)result = sc->card.manufacturer;
 1027                 break;
 1028         case PCCARD_IVAR_PRODUCT:
 1029                 *(uint32_t *)result = sc->card.product;
 1030                 break;
 1031         case PCCARD_IVAR_PRODEXT:
 1032                 *(uint16_t *)result = sc->card.prodext;
 1033                 break;
 1034         case PCCARD_IVAR_FUNCTION:
 1035                 *(uint32_t *)result = pf->function;
 1036                 break;
 1037         case PCCARD_IVAR_FUNCTION_NUMBER:
 1038                 *(uint32_t *)result = pf->number;
 1039                 break;
 1040         case PCCARD_IVAR_VENDOR_STR:
 1041                 *(const char **)result = sc->card.cis1_info[0];
 1042                 break;
 1043         case PCCARD_IVAR_PRODUCT_STR:
 1044                 *(const char **)result = sc->card.cis1_info[1];
 1045                 break;
 1046         case PCCARD_IVAR_CIS3_STR:
 1047                 *(const char **)result = sc->card.cis1_info[2];
 1048                 break;
 1049         case PCCARD_IVAR_CIS4_STR:
 1050                 *(const char **)result = sc->card.cis1_info[3];
 1051                 break;
 1052         }
 1053         return (0);
 1054 }
 1055 
 1056 static void
 1057 pccard_driver_added(device_t dev, driver_t *driver)
 1058 {
 1059         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 1060         struct pccard_function *pf;
 1061         device_t child;
 1062 
 1063         STAILQ_FOREACH(pf, &sc->card.pf_head, pf_list) {
 1064                 if (STAILQ_EMPTY(&pf->cfe_head))
 1065                         continue;
 1066                 child = pf->dev;
 1067                 if (device_get_state(child) != DS_NOTPRESENT)
 1068                         continue;
 1069                 if (pccard_function_enable(pf) == 0 &&
 1070                     device_probe_and_attach(child) == 0) {
 1071                         DEVPRINTF((sc->dev, "function %d CCR at %d "
 1072                             "offset %x: %x %x %x %x, %x %x %x %x, %x\n",
 1073                             pf->number, pf->pf_ccr_window, pf->pf_ccr_offset,
 1074                             pccard_ccr_read(pf, 0x00),
 1075                         pccard_ccr_read(pf, 0x02), pccard_ccr_read(pf, 0x04),
 1076                         pccard_ccr_read(pf, 0x06), pccard_ccr_read(pf, 0x0A),
 1077                         pccard_ccr_read(pf, 0x0C), pccard_ccr_read(pf, 0x0E),
 1078                         pccard_ccr_read(pf, 0x10), pccard_ccr_read(pf, 0x12)));
 1079                 } else {
 1080                         if (pf->cfe != NULL)
 1081                                 pccard_function_disable(pf);
 1082                 }
 1083         }
 1084         return;
 1085 }
 1086 
 1087 static struct resource *
 1088 pccard_alloc_resource(device_t dev, device_t child, int type, int *rid,
 1089     u_long start, u_long end, u_long count, u_int flags)
 1090 {
 1091         struct pccard_ivar *dinfo;
 1092         struct resource_list_entry *rle = 0;
 1093         int passthrough = (device_get_parent(child) != dev);
 1094         int isdefault = (start == 0 && end == ~0UL && count == 1);
 1095         struct resource *r = NULL;
 1096 
 1097         /* XXX I'm no longer sure this is right */
 1098         if (passthrough) {
 1099                 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
 1100                     type, rid, start, end, count, flags));
 1101         }
 1102 
 1103         dinfo = device_get_ivars(child);
 1104         rle = resource_list_find(&dinfo->resources, type, *rid);
 1105 
 1106         if (rle == NULL && isdefault)
 1107                 return (NULL);  /* no resource of that type/rid */
 1108         if (rle == NULL || rle->res == NULL) {
 1109                 /* XXX Need to adjust flags */
 1110                 r = bus_alloc_resource(dev, type, rid, start, end,
 1111                   count, flags);
 1112                 if (r == NULL)
 1113                     goto bad;
 1114                 resource_list_add(&dinfo->resources, type, *rid,
 1115                   rman_get_start(r), rman_get_end(r), count);
 1116                 rle = resource_list_find(&dinfo->resources, type, *rid);
 1117                 if (!rle)
 1118                     goto bad;
 1119                 rle->res = r;
 1120         }
 1121         /*
 1122          * If dev doesn't own the device, then we can't give this device
 1123          * out.
 1124          */
 1125         if (rman_get_device(rle->res) != dev)
 1126                 return (NULL);
 1127         rman_set_device(rle->res, child);
 1128         if (flags & RF_ACTIVE)
 1129                 BUS_ACTIVATE_RESOURCE(dev, child, type, *rid, rle->res);
 1130         return (rle->res);
 1131 bad:;
 1132         device_printf(dev, "WARNING: Resource not reserved by pccard\n");
 1133         return (NULL);
 1134 }
 1135 
 1136 static int
 1137 pccard_release_resource(device_t dev, device_t child, int type, int rid,
 1138     struct resource *r)
 1139 {
 1140         struct pccard_ivar *dinfo;
 1141         int passthrough = (device_get_parent(child) != dev);
 1142         struct resource_list_entry *rle = 0;
 1143 
 1144         if (passthrough)
 1145                 return BUS_RELEASE_RESOURCE(device_get_parent(dev), child,
 1146                     type, rid, r);
 1147 
 1148         dinfo = device_get_ivars(child);
 1149 
 1150         rle = resource_list_find(&dinfo->resources, type, rid);
 1151 
 1152         if (!rle) {
 1153                 device_printf(dev, "Allocated resource not found, "
 1154                     "%d %x %lx %lx\n",
 1155                     type, rid, rman_get_start(r), rman_get_size(r));
 1156                 return ENOENT;
 1157         }
 1158         if (!rle->res) {
 1159                 device_printf(dev, "Allocated resource not recorded\n");
 1160                 return ENOENT;
 1161         }
 1162         /*
 1163          * Deactivate the resource (since it is being released), and
 1164          * assign it to the bus.
 1165          */
 1166         BUS_DEACTIVATE_RESOURCE(dev, child, type, rid, rle->res);
 1167         rman_set_device(rle->res, dev);
 1168         return (0);
 1169 }
 1170 
 1171 static void
 1172 pccard_child_detached(device_t parent, device_t dev)
 1173 {
 1174         struct pccard_ivar *ivar = PCCARD_IVAR(dev);
 1175         struct pccard_function *pf = ivar->pf;
 1176 
 1177         pccard_function_disable(pf);
 1178 }
 1179 
 1180 static int
 1181 pccard_filter(void *arg)
 1182 {
 1183         struct pccard_function *pf = (struct pccard_function*) arg;
 1184         int reg;
 1185         int doisr = 1;
 1186 
 1187         /*
 1188          * MFC cards know if they interrupted, so we have to ack the
 1189          * interrupt and call the ISR.  Non-MFC cards don't have these
 1190          * bits, so they always get called.  Many non-MFC cards have
 1191          * this bit set always upon read, but some do not.
 1192          *
 1193          * We always ack the interrupt, even if there's no ISR
 1194          * for the card.  This is done on the theory that acking
 1195          * the interrupt will pacify the card enough to keep an
 1196          * interrupt storm from happening.  Of course this won't
 1197          * help in the non-MFC case.
 1198          *
 1199          * This has no impact for MPSAFEness of the client drivers.
 1200          * We register this with whatever flags the intr_handler
 1201          * was registered with.  All these functions are MPSAFE.
 1202          */
 1203         if (pccard_mfc(pf->sc)) {
 1204                 reg = pccard_ccr_read(pf, PCCARD_CCR_STATUS);
 1205                 if (reg & PCCARD_CCR_STATUS_INTR)
 1206                         pccard_ccr_write(pf, PCCARD_CCR_STATUS,
 1207                             reg & ~PCCARD_CCR_STATUS_INTR);
 1208                 else
 1209                         doisr = 0;
 1210         }
 1211         if (doisr) {
 1212                 if (pf->intr_filter != NULL)
 1213                         return (pf->intr_filter(pf->intr_handler_arg));
 1214                 return (FILTER_SCHEDULE_THREAD);
 1215         }
 1216         return (FILTER_STRAY);
 1217 }
 1218 
 1219 static void
 1220 pccard_intr(void *arg)
 1221 {
 1222         struct pccard_function *pf = (struct pccard_function*) arg;
 1223         
 1224         pf->intr_handler(pf->intr_handler_arg); 
 1225 }
 1226 
 1227 static int
 1228 pccard_setup_intr(device_t dev, device_t child, struct resource *irq,
 1229     int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, 
 1230     void **cookiep)
 1231 {
 1232         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 1233         struct pccard_ivar *ivar = PCCARD_IVAR(child);
 1234         struct pccard_function *pf = ivar->pf;
 1235         int err;
 1236 
 1237         if (pf->intr_filter != NULL || pf->intr_handler != NULL)
 1238                 panic("Only one interrupt handler per function allowed");
 1239         err = bus_generic_setup_intr(dev, child, irq, flags, pccard_filter, 
 1240             intr ? pccard_intr : NULL, pf, cookiep);
 1241         if (err != 0)
 1242                 return (err);
 1243         pf->intr_filter = filt;
 1244         pf->intr_handler = intr;
 1245         pf->intr_handler_arg = arg;
 1246         pf->intr_handler_cookie = *cookiep;
 1247         if (pccard_mfc(sc)) {
 1248                 pccard_ccr_write(pf, PCCARD_CCR_OPTION,
 1249                     pccard_ccr_read(pf, PCCARD_CCR_OPTION) |
 1250                     PCCARD_CCR_OPTION_IREQ_ENABLE);
 1251         }
 1252         return (0);
 1253 }
 1254 
 1255 static int
 1256 pccard_teardown_intr(device_t dev, device_t child, struct resource *r,
 1257     void *cookie)
 1258 {
 1259         struct pccard_softc *sc = PCCARD_SOFTC(dev);
 1260         struct pccard_ivar *ivar = PCCARD_IVAR(child);
 1261         struct pccard_function *pf = ivar->pf;
 1262         int ret;
 1263 
 1264         if (pccard_mfc(sc)) {
 1265                 pccard_ccr_write(pf, PCCARD_CCR_OPTION,
 1266                     pccard_ccr_read(pf, PCCARD_CCR_OPTION) &
 1267                     ~PCCARD_CCR_OPTION_IREQ_ENABLE);
 1268         }
 1269         ret = bus_generic_teardown_intr(dev, child, r, cookie);
 1270         if (ret == 0) {
 1271                 pf->intr_handler = NULL;
 1272                 pf->intr_handler_arg = NULL;
 1273                 pf->intr_handler_cookie = NULL;
 1274         }
 1275 
 1276         return (ret);
 1277 }
 1278 
 1279 static int
 1280 pccard_activate_resource(device_t brdev, device_t child, int type, int rid,
 1281     struct resource *r)
 1282 {
 1283         struct pccard_ivar *ivar = PCCARD_IVAR(child);
 1284         struct pccard_function *pf = ivar->pf;
 1285 
 1286         switch(type) {
 1287         case SYS_RES_IOPORT:
 1288                 /*
 1289                  * We need to adjust IOBASE[01] and IOSIZE if we're an MFC
 1290                  * card.
 1291                  */
 1292                 if (pccard_mfc(pf->sc))
 1293                         pccard_mfc_adjust_iobase(pf, rman_get_start(r), 0,
 1294                             rman_get_size(r));
 1295                 break;
 1296         default:
 1297                 break;
 1298         }
 1299         return (bus_generic_activate_resource(brdev, child, type, rid, r));
 1300 }
 1301 
 1302 static int
 1303 pccard_deactivate_resource(device_t brdev, device_t child, int type,
 1304     int rid, struct resource *r)
 1305 {
 1306         /* XXX undo pccard_activate_resource? XXX */
 1307         return (bus_generic_deactivate_resource(brdev, child, type, rid, r));
 1308 }
 1309 
 1310 static int
 1311 pccard_attr_read_impl(device_t brdev, device_t child, uint32_t offset,
 1312     uint8_t *val)
 1313 {
 1314         struct pccard_ivar *devi = PCCARD_IVAR(child);
 1315         struct pccard_function *pf = devi->pf;
 1316 
 1317         /*
 1318          * Optimization.  Most of the time, devices want to access
 1319          * the same page of the attribute memory that the CCR is in.
 1320          * We take advantage of this fact here.
 1321          */
 1322         if (offset / PCCARD_MEM_PAGE_SIZE ==
 1323             pf->ccr_base / PCCARD_MEM_PAGE_SIZE)
 1324                 *val = bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh,
 1325                     offset % PCCARD_MEM_PAGE_SIZE);
 1326         else {
 1327                 CARD_SET_MEMORY_OFFSET(brdev, child, pf->ccr_rid, offset,
 1328                     &offset);
 1329                 *val = bus_space_read_1(pf->pf_ccrt, pf->pf_ccrh, offset);
 1330                 CARD_SET_MEMORY_OFFSET(brdev, child, pf->ccr_rid, pf->ccr_base,
 1331                     &offset);
 1332         }
 1333         return 0;
 1334 }
 1335 
 1336 static int
 1337 pccard_attr_write_impl(device_t brdev, device_t child, uint32_t offset,
 1338     uint8_t val)
 1339 {
 1340         struct pccard_ivar *devi = PCCARD_IVAR(child);
 1341         struct pccard_function *pf = devi->pf;
 1342 
 1343         /*
 1344          * Optimization.  Most of the time, devices want to access
 1345          * the same page of the attribute memory that the CCR is in.
 1346          * We take advantage of this fact here.
 1347          */
 1348         if (offset / PCCARD_MEM_PAGE_SIZE ==
 1349             pf->ccr_base / PCCARD_MEM_PAGE_SIZE)
 1350                 bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh,
 1351                     offset % PCCARD_MEM_PAGE_SIZE, val);
 1352         else {
 1353                 CARD_SET_MEMORY_OFFSET(brdev, child, pf->ccr_rid, offset,
 1354                     &offset);
 1355                 bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh, offset, val);
 1356                 CARD_SET_MEMORY_OFFSET(brdev, child, pf->ccr_rid, pf->ccr_base,
 1357                     &offset);
 1358         }
 1359 
 1360         return 0;
 1361 }
 1362 
 1363 static int
 1364 pccard_ccr_read_impl(device_t brdev, device_t child, uint32_t offset,
 1365     uint8_t *val)
 1366 {
 1367         struct pccard_ivar *devi = PCCARD_IVAR(child);
 1368 
 1369         *val = pccard_ccr_read(devi->pf, offset);
 1370         device_printf(child, "ccr_read of %#x (%#x) is %#x\n", offset,
 1371           devi->pf->pf_ccr_offset, *val);
 1372         return 0;
 1373 }
 1374 
 1375 static int
 1376 pccard_ccr_write_impl(device_t brdev, device_t child, uint32_t offset,
 1377     uint8_t val)
 1378 {
 1379         struct pccard_ivar *devi = PCCARD_IVAR(child);
 1380         struct pccard_function *pf = devi->pf;
 1381 
 1382         /*
 1383          * Can't use pccard_ccr_write since client drivers may access
 1384          * registers not contained in the 'mask' if they are non-standard.
 1385          */
 1386         device_printf(child, "ccr_write of %#x to %#x (%#x)\n", val, offset,
 1387           devi->pf->pf_ccr_offset);
 1388         bus_space_write_1(pf->pf_ccrt, pf->pf_ccrh, pf->pf_ccr_offset + offset,
 1389             val);
 1390         return 0;
 1391 }
 1392 
 1393 
 1394 static device_method_t pccard_methods[] = {
 1395         /* Device interface */
 1396         DEVMETHOD(device_probe,         pccard_probe),
 1397         DEVMETHOD(device_attach,        pccard_attach),
 1398         DEVMETHOD(device_detach,        pccard_detach),
 1399         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 1400         DEVMETHOD(device_suspend,       pccard_suspend),
 1401         DEVMETHOD(device_resume,        pccard_resume),
 1402 
 1403         /* Bus interface */
 1404         DEVMETHOD(bus_print_child,      pccard_print_child),
 1405         DEVMETHOD(bus_driver_added,     pccard_driver_added),
 1406         DEVMETHOD(bus_child_detached,   pccard_child_detached),
 1407         DEVMETHOD(bus_alloc_resource,   pccard_alloc_resource),
 1408         DEVMETHOD(bus_release_resource, pccard_release_resource),
 1409         DEVMETHOD(bus_activate_resource, pccard_activate_resource),
 1410         DEVMETHOD(bus_deactivate_resource, pccard_deactivate_resource),
 1411         DEVMETHOD(bus_setup_intr,       pccard_setup_intr),
 1412         DEVMETHOD(bus_teardown_intr,    pccard_teardown_intr),
 1413         DEVMETHOD(bus_set_resource,     pccard_set_resource),
 1414         DEVMETHOD(bus_get_resource,     pccard_get_resource),
 1415         DEVMETHOD(bus_delete_resource,  pccard_delete_resource),
 1416         DEVMETHOD(bus_probe_nomatch,    pccard_probe_nomatch),
 1417         DEVMETHOD(bus_read_ivar,        pccard_read_ivar),
 1418         DEVMETHOD(bus_child_pnpinfo_str, pccard_child_pnpinfo_str),
 1419         DEVMETHOD(bus_child_location_str, pccard_child_location_str),
 1420 
 1421         /* Card Interface */
 1422         DEVMETHOD(card_set_res_flags,   pccard_set_res_flags),
 1423         DEVMETHOD(card_set_memory_offset, pccard_set_memory_offset),
 1424         DEVMETHOD(card_attach_card,     pccard_attach_card),
 1425         DEVMETHOD(card_detach_card,     pccard_detach_card),
 1426         DEVMETHOD(card_do_product_lookup, pccard_do_product_lookup),
 1427         DEVMETHOD(card_cis_scan,        pccard_scan_cis),
 1428         DEVMETHOD(card_attr_read,       pccard_attr_read_impl),
 1429         DEVMETHOD(card_attr_write,      pccard_attr_write_impl),
 1430         DEVMETHOD(card_ccr_read,        pccard_ccr_read_impl),
 1431         DEVMETHOD(card_ccr_write,       pccard_ccr_write_impl),
 1432 
 1433         { 0, 0 }
 1434 };
 1435 
 1436 static driver_t pccard_driver = {
 1437         "pccard",
 1438         pccard_methods,
 1439         sizeof(struct pccard_softc)
 1440 };
 1441 
 1442 devclass_t      pccard_devclass;
 1443 
 1444 /* Maybe we need to have a slot device? */
 1445 DRIVER_MODULE(pccard, pcic, pccard_driver, pccard_devclass, 0, 0);
 1446 DRIVER_MODULE(pccard, cbb, pccard_driver, pccard_devclass, 0, 0);
 1447 MODULE_VERSION(pccard, 1);

Cache object: b277d96bdc4037a3540fc55bfcf7b003


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