The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/an.c

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    1 /*      $NetBSD: an.c,v 1.33 2005/01/15 11:01:46 dyoung Exp $   */
    2 /*
    3  * Copyright (c) 1997, 1998, 1999
    4  *      Bill Paul <wpaul@ctr.columbia.edu>.  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 Bill Paul.
   17  * 4. Neither the name of the author nor the names of any co-contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   31  * THE POSSIBILITY OF SUCH DAMAGE.
   32  *
   33  * $FreeBSD: src/sys/dev/an/if_an.c,v 1.12 2000/11/13 23:04:12 wpaul Exp $
   34  */
   35 /*
   36  * Copyright (c) 2004, 2005 David Young.  All rights reserved.
   37  * Copyright (c) 2004, 2005 OJC Technologies.  All rights reserved.
   38  * Copyright (c) 2004, 2005 Dayton Data Center Services, LLC.  All
   39  *     rights reserved.
   40  *
   41  * Redistribution and use in source and binary forms, with or without
   42  * modification, are permitted provided that the following conditions
   43  * are met:
   44  * 1. Redistributions of source code must retain the above copyright
   45  *    notice, this list of conditions and the following disclaimer.
   46  * 2. Redistributions in binary form must reproduce the above copyright
   47  *    notice, this list of conditions and the following disclaimer in the
   48  *    documentation and/or other materials provided with the distribution.
   49  * 3. Neither the name of the author nor the names of any co-contributors
   50  *    may be used to endorse or promote products derived from this software
   51  *    without specific prior written permission.
   52  *
   53  * THIS SOFTWARE IS PROVIDED BY David Young AND CONTRIBUTORS ``AS IS'' AND
   54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   56  * ARE DISCLAIMED.  IN NO EVENT SHALL David Young AND CONTRIBUTORS
   57  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   58  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   59  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   60  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   61  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   62  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   63  * THE POSSIBILITY OF SUCH DAMAGE.
   64  */
   65 
   66 /*
   67  * Aironet 4500/4800 802.11 PCMCIA/ISA/PCI driver for FreeBSD.
   68  *
   69  * Written by Bill Paul <wpaul@ctr.columbia.edu>
   70  * Electrical Engineering Department
   71  * Columbia University, New York City
   72  */
   73 
   74 /*
   75  * Ported to NetBSD from FreeBSD by Atsushi Onoe at the San Diego
   76  * IETF meeting.
   77  */
   78 
   79 #include <sys/cdefs.h>
   80 __KERNEL_RCSID(0, "$NetBSD: an.c,v 1.33 2005/01/15 11:01:46 dyoung Exp $");
   81 
   82 #include "bpfilter.h"
   83 
   84 #include <sys/param.h>
   85 #include <sys/callout.h>
   86 #include <sys/sysctl.h>
   87 #include <sys/systm.h>
   88 #include <sys/sockio.h>
   89 #include <sys/mbuf.h>
   90 #include <sys/kernel.h>
   91 #include <sys/ucred.h>
   92 #include <sys/socket.h>
   93 #include <sys/device.h>
   94 #include <sys/proc.h>
   95 #include <sys/md4.h>
   96 #include <sys/endian.h>
   97 
   98 #include <machine/bus.h>
   99 
  100 #include <net/if.h>
  101 #include <net/if_dl.h>
  102 #include <net/if_ether.h>
  103 #include <net/if_llc.h>
  104 #include <net/if_media.h>
  105 #include <net/if_types.h>
  106 
  107 #include <net80211/ieee80211_var.h>
  108 #include <net80211/ieee80211_compat.h>
  109 
  110 #if NBPFILTER > 0
  111 #include <net/bpf.h>
  112 #endif
  113 
  114 #include <dev/ic/anreg.h>
  115 #include <dev/ic/anvar.h>
  116 
  117 static int      an_reset(struct an_softc *);
  118 static void     an_wait(struct an_softc *);
  119 static int      an_init(struct ifnet *);
  120 static void     an_stop(struct ifnet *, int);
  121 static void     an_start(struct ifnet *);
  122 static void     an_watchdog(struct ifnet *);
  123 static int      an_ioctl(struct ifnet *, u_long, caddr_t);
  124 static int      an_media_change(struct ifnet *);
  125 static void     an_media_status(struct ifnet *, struct ifmediareq *);
  126 
  127 static int      an_set_nwkey(struct an_softc *, struct ieee80211_nwkey *);
  128 static int      an_set_nwkey_wep(struct an_softc *, struct ieee80211_nwkey *);
  129 static int      an_set_nwkey_eap(struct an_softc *, struct ieee80211_nwkey *);
  130 static int      an_get_nwkey(struct an_softc *, struct ieee80211_nwkey *);
  131 static int      an_write_wepkey(struct an_softc *, int, struct an_wepkey *,
  132                                 int);
  133 
  134 static void     an_rx_intr(struct an_softc *);
  135 static void     an_tx_intr(struct an_softc *, int);
  136 static void     an_linkstat_intr(struct an_softc *);
  137 
  138 static int      an_cmd(struct an_softc *, int, int);
  139 static int      an_seek_bap(struct an_softc *, int, int);
  140 static int      an_read_bap(struct an_softc *, int, int, void *, int);
  141 static int      an_write_bap(struct an_softc *, int, int, void *, int);
  142 static int      an_mwrite_bap(struct an_softc *, int, int, struct mbuf *, int);
  143 static int      an_read_rid(struct an_softc *, int, void *, int *);
  144 static int      an_write_rid(struct an_softc *, int, void *, int);
  145 
  146 static int      an_alloc_fid(struct an_softc *, int, int *);
  147 
  148 static int      an_newstate(struct ieee80211com *, enum ieee80211_state, int);
  149 
  150 #ifdef AN_DEBUG
  151 int an_debug = 0;
  152 
  153 #define DPRINTF(X)      if (an_debug) printf X
  154 #define DPRINTF2(X)     if (an_debug > 1) printf X
  155 static int an_sysctl_verify(SYSCTLFN_PROTO, int lower, int upper);
  156 static int an_sysctl_verify_debug(SYSCTLFN_PROTO);
  157 #else
  158 #define DPRINTF(X)
  159 #define DPRINTF2(X)
  160 #endif
  161 
  162 int
  163 an_attach(struct an_softc *sc)
  164 {
  165         struct ieee80211com *ic = &sc->sc_ic;
  166         struct ifnet *ifp = &ic->ic_if;
  167         int i, s;
  168         struct an_rid_wepkey *akey;
  169         int buflen, kid, rid;
  170         int chan, chan_min, chan_max;
  171 
  172         s = splnet();
  173         sc->sc_invalid = 0;
  174 
  175         an_wait(sc);
  176         if (an_reset(sc) != 0) {
  177                 sc->sc_invalid = 1;
  178                 splx(s);
  179                 return 1;
  180         }
  181 
  182         /* Load factory config */
  183         if (an_cmd(sc, AN_CMD_READCFG, 0) != 0) {
  184                 splx(s);
  185                 aprint_error("%s: failed to load config data\n",
  186                     sc->sc_dev.dv_xname);
  187                 return 1;
  188         }
  189 
  190         /* Read the current configuration */
  191         buflen = sizeof(sc->sc_config);
  192         if (an_read_rid(sc, AN_RID_GENCONFIG, &sc->sc_config, &buflen) != 0) {
  193                 splx(s);
  194                 aprint_error("%s: read config failed\n", sc->sc_dev.dv_xname);
  195                 return 1;
  196         }
  197 
  198         /* Read the card capabilities */
  199         buflen = sizeof(sc->sc_caps);
  200         if (an_read_rid(sc, AN_RID_CAPABILITIES, &sc->sc_caps, &buflen) != 0) {
  201                 splx(s);
  202                 aprint_error("%s: read caps failed\n", sc->sc_dev.dv_xname);
  203                 return 1;
  204         }
  205 
  206 #ifdef AN_DEBUG
  207         if (an_debug) {
  208                 static const int dumprid[] = {
  209                     AN_RID_GENCONFIG, AN_RID_CAPABILITIES, AN_RID_SSIDLIST,
  210                     AN_RID_APLIST, AN_RID_STATUS, AN_RID_ENCAP
  211                 };
  212 
  213                 for (rid = 0; rid < sizeof(dumprid)/sizeof(dumprid[0]); rid++) {
  214                         buflen = sizeof(sc->sc_buf);
  215                         if (an_read_rid(sc, dumprid[rid], &sc->sc_buf, &buflen)
  216                             != 0)
  217                                 continue;
  218                         printf("%04x (%d):\n", dumprid[rid], buflen);
  219                         for (i = 0; i < (buflen + 1) / 2; i++)
  220                                 printf(" %04x", sc->sc_buf.sc_val[i]);
  221                         printf("\n");
  222                 }
  223         }
  224 #endif
  225 
  226         /* Read WEP settings from persistent memory */
  227         akey = &sc->sc_buf.sc_wepkey;
  228         buflen = sizeof(struct an_rid_wepkey);
  229         rid = AN_RID_WEP_VOLATILE;      /* first persistent key */
  230         while (an_read_rid(sc, rid, akey, &buflen) == 0) {
  231                 kid = le16toh(akey->an_key_index);
  232                 DPRINTF(("an_attach: wep rid=0x%x len=%d(%d) index=0x%04x "
  233                     "mac[0]=%02x keylen=%d\n",
  234                     rid, buflen, sizeof(*akey), kid,
  235                     akey->an_mac_addr[0], le16toh(akey->an_key_len)));
  236                 if (kid == 0xffff) {
  237                         sc->sc_tx_perskey = akey->an_mac_addr[0];
  238                         sc->sc_tx_key = -1;
  239                         break;
  240                 }
  241                 if (kid >= IEEE80211_WEP_NKID)
  242                         break;
  243                 sc->sc_perskeylen[kid] = le16toh(akey->an_key_len);
  244                 sc->sc_wepkeys[kid].an_wep_keylen = -1;
  245                 rid = AN_RID_WEP_PERSISTENT;    /* for next key */
  246                 buflen = sizeof(struct an_rid_wepkey);
  247         }
  248 
  249         aprint_normal("%s: %s %s (firmware %s)\n", sc->sc_dev.dv_xname,
  250             sc->sc_caps.an_manufname, sc->sc_caps.an_prodname,
  251             sc->sc_caps.an_prodvers);
  252 
  253         memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
  254 
  255         ifp->if_softc = sc;
  256         ifp->if_flags = IFF_BROADCAST | IFF_NOTRAILERS | IFF_SIMPLEX |
  257             IFF_MULTICAST | IFF_ALLMULTI;
  258         ifp->if_ioctl = an_ioctl;
  259         ifp->if_start = an_start;
  260         ifp->if_init = an_init;
  261         ifp->if_stop = an_stop;
  262         ifp->if_watchdog = an_watchdog;
  263         IFQ_SET_READY(&ifp->if_snd);
  264 
  265         ic->ic_phytype = IEEE80211_T_DS;
  266         ic->ic_opmode = IEEE80211_M_STA;
  267         ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_PMGT | IEEE80211_C_IBSS |
  268             IEEE80211_C_MONITOR;
  269         ic->ic_state = IEEE80211_S_INIT;
  270         IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_caps.an_oemaddr);
  271 
  272         switch (le16toh(sc->sc_caps.an_regdomain)) {
  273         default:
  274         case AN_REGDOMAIN_USA:
  275         case AN_REGDOMAIN_CANADA:
  276                 chan_min = 1; chan_max = 11; break;
  277         case AN_REGDOMAIN_EUROPE:
  278         case AN_REGDOMAIN_AUSTRALIA:
  279                 chan_min = 1; chan_max = 13; break;
  280         case AN_REGDOMAIN_JAPAN:
  281                 chan_min = 14; chan_max = 14; break;
  282         case AN_REGDOMAIN_SPAIN:
  283                 chan_min = 10; chan_max = 11; break;
  284         case AN_REGDOMAIN_FRANCE:
  285                 chan_min = 10; chan_max = 13; break;
  286         case AN_REGDOMAIN_JAPANWIDE:
  287                 chan_min = 1; chan_max = 14; break;
  288         }
  289 
  290         for (chan = chan_min; chan <= chan_max; chan++) {
  291                 ic->ic_channels[chan].ic_freq =
  292                     ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ);
  293                 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_B;
  294         }
  295         ic->ic_ibss_chan = &ic->ic_channels[chan_min];
  296 
  297         aprint_normal("%s: 802.11 address: %s, channel: %d-%d\n",
  298             ifp->if_xname, ether_sprintf(ic->ic_myaddr), chan_min, chan_max);
  299 
  300         /* Find supported rate */
  301         for (i = 0; i < sizeof(sc->sc_caps.an_rates); i++) {
  302                 if (sc->sc_caps.an_rates[i] == 0)
  303                         continue;
  304                 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[
  305                     ic->ic_sup_rates[IEEE80211_MODE_11B].rs_nrates++] =
  306                     sc->sc_caps.an_rates[i];
  307         }
  308 
  309         /*
  310          * Call MI attach routine.
  311          */
  312         if_attach(ifp);
  313         ieee80211_ifattach(ifp);
  314 
  315         sc->sc_newstate = ic->ic_newstate;
  316         ic->ic_newstate = an_newstate;
  317 
  318         ieee80211_media_init(ifp, an_media_change, an_media_status);
  319         sc->sc_attached = 1;
  320         splx(s);
  321 
  322         return 0;
  323 }
  324 
  325 #ifdef AN_DEBUG
  326 /*
  327  * Setup sysctl(3) MIB, hw.an.*
  328  *
  329  * TBD condition CTLFLAG_PERMANENT on being an LKM or not
  330  */
  331 SYSCTL_SETUP(sysctl_an, "sysctl an(4) subtree setup")
  332 {
  333         int rc;
  334         struct sysctlnode *cnode, *rnode;
  335 
  336         if ((rc = sysctl_createv(clog, 0, NULL, &rnode,
  337             CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL,
  338             NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0)
  339                 goto err;
  340 
  341         if ((rc = sysctl_createv(clog, 0, &rnode, &rnode,
  342             CTLFLAG_PERMANENT, CTLTYPE_NODE, "an",
  343             "Cisco/Aironet 802.11 controls",
  344             NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
  345                 goto err;
  346 
  347         /* control debugging printfs */
  348         if ((rc = sysctl_createv(clog, 0, &rnode, &cnode,
  349             CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT,
  350             "debug", SYSCTL_DESCR("Enable Cisco/Aironet debugging output"),
  351             an_sysctl_verify_debug, 0, &an_debug, 0,
  352             CTL_CREATE, CTL_EOL)) != 0)
  353                 goto err;
  354 
  355         return;
  356 err:
  357         printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc);
  358 }
  359 
  360 static int
  361 an_sysctl_verify(SYSCTLFN_ARGS, int lower, int upper)
  362 {
  363         int error, t;
  364         struct sysctlnode node;
  365 
  366         node = *rnode;
  367         t = *(int*)rnode->sysctl_data;
  368         node.sysctl_data = &t;
  369         error = sysctl_lookup(SYSCTLFN_CALL(&node));
  370         if (error || newp == NULL)
  371                 return (error);
  372 
  373         if (t < lower || t > upper)
  374                 return (EINVAL);
  375 
  376         *(int*)rnode->sysctl_data = t;
  377 
  378         return (0);
  379 }
  380 
  381 static int
  382 an_sysctl_verify_debug(SYSCTLFN_ARGS)
  383 {
  384         return an_sysctl_verify(SYSCTLFN_CALL(rnode), 0, 2);
  385 }
  386 #endif /* AN_DEBUG */
  387 
  388 int
  389 an_detach(struct an_softc *sc)
  390 {
  391         struct ifnet *ifp = &sc->sc_ic.ic_if;
  392         int s;
  393 
  394         if (!sc->sc_attached)
  395                 return 0;
  396 
  397         s = splnet();
  398         sc->sc_invalid = 1;
  399         an_stop(ifp, 1);
  400         ifmedia_delete_instance(&sc->sc_ic.ic_media, IFM_INST_ANY);
  401         ieee80211_ifdetach(ifp);
  402         if_detach(ifp);
  403         splx(s);
  404         return 0;
  405 }
  406 
  407 int
  408 an_activate(struct device *self, enum devact act)
  409 {
  410         struct an_softc *sc = (struct an_softc *)self;
  411         int s, error = 0;
  412 
  413         s = splnet();
  414         switch (act) {
  415         case DVACT_ACTIVATE:
  416                 error = EOPNOTSUPP;
  417                 break;
  418 
  419         case DVACT_DEACTIVATE:
  420                 sc->sc_invalid = 1;
  421                 if_deactivate(&sc->sc_ic.ic_if);
  422                 break;
  423         }
  424         splx(s);
  425 
  426         return error;
  427 }
  428 
  429 void
  430 an_power(int why, void *arg)
  431 {
  432         int s;
  433         struct an_softc *sc = arg;
  434         struct ifnet *ifp = &sc->sc_ic.ic_if;
  435 
  436         s = splnet();
  437         switch (why) {
  438         case PWR_SUSPEND:
  439         case PWR_STANDBY:
  440                 an_stop(ifp, 1);
  441                 break;
  442         case PWR_RESUME:
  443                 if (ifp->if_flags & IFF_UP) {
  444                         an_init(ifp);
  445                         (void)an_intr(sc);
  446                 }
  447                 break;
  448         case PWR_SOFTSUSPEND:
  449         case PWR_SOFTSTANDBY:
  450         case PWR_SOFTRESUME:
  451                 break;
  452         }
  453         splx(s);
  454 }
  455 
  456 void
  457 an_shutdown(struct an_softc *sc)
  458 {
  459 
  460         if (sc->sc_attached)
  461                 an_stop(&sc->sc_ic.ic_if, 1);
  462 }
  463 
  464 int
  465 an_intr(void *arg)
  466 {
  467         struct an_softc *sc = arg;
  468         struct ifnet *ifp = &sc->sc_ic.ic_if;
  469         int i;
  470         u_int16_t status;
  471 
  472         if (!sc->sc_enabled || sc->sc_invalid ||
  473             (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0 ||
  474             (ifp->if_flags & IFF_RUNNING) == 0)
  475                 return 0;
  476 
  477         if ((ifp->if_flags & IFF_UP) == 0) {
  478                 CSR_WRITE_2(sc, AN_INT_EN, 0);
  479                 CSR_WRITE_2(sc, AN_EVENT_ACK, ~0);
  480                 return 1;
  481         }
  482 
  483         /* maximum 10 loops per interrupt */
  484         for (i = 0; i < 10; i++) {
  485                 if (!sc->sc_enabled || sc->sc_invalid)
  486                         return 1;
  487                 if (CSR_READ_2(sc, AN_SW0) != AN_MAGIC) {
  488                         DPRINTF(("an_intr: magic number changed: %x\n",
  489                             CSR_READ_2(sc, AN_SW0)));
  490                         sc->sc_invalid = 1;
  491                         return 1;
  492                 }
  493                 status = CSR_READ_2(sc, AN_EVENT_STAT);
  494                 CSR_WRITE_2(sc, AN_EVENT_ACK, status & ~(AN_INTRS));
  495                 if ((status & AN_INTRS) == 0)
  496                         break;
  497 
  498                 if (status & AN_EV_RX)
  499                         an_rx_intr(sc);
  500 
  501                 if (status & (AN_EV_TX | AN_EV_TX_EXC))
  502                         an_tx_intr(sc, status);
  503 
  504                 if (status & AN_EV_LINKSTAT)
  505                         an_linkstat_intr(sc);
  506 
  507                 if ((ifp->if_flags & IFF_OACTIVE) == 0 &&
  508                     sc->sc_ic.ic_state == IEEE80211_S_RUN &&
  509                     !IFQ_IS_EMPTY(&ifp->if_snd))
  510                         an_start(ifp);
  511         }
  512 
  513         return 1;
  514 }
  515 
  516 static int
  517 an_init(struct ifnet *ifp)
  518 {
  519         struct an_softc *sc = ifp->if_softc;
  520         struct ieee80211com *ic = &sc->sc_ic;
  521         int i, error, fid;
  522 
  523         DPRINTF(("an_init: enabled %d\n", sc->sc_enabled));
  524         if (!sc->sc_enabled) {
  525                 if (sc->sc_enable)
  526                         (*sc->sc_enable)(sc);
  527                 an_wait(sc);
  528                 sc->sc_enabled = 1;
  529         } else {
  530                 an_stop(ifp, 0);
  531                 if ((error = an_reset(sc)) != 0) {
  532                         printf("%s: failed to reset\n", ifp->if_xname);
  533                         an_stop(ifp, 1);
  534                         return error;
  535                 }
  536         }
  537         CSR_WRITE_2(sc, AN_SW0, AN_MAGIC);
  538 
  539         /* Allocate the TX buffers */
  540         for (i = 0; i < AN_TX_RING_CNT; i++) {
  541                 if ((error = an_alloc_fid(sc, AN_TX_MAX_LEN, &fid)) != 0) {
  542                         printf("%s: failed to allocate nic memory\n",
  543                             ifp->if_xname);
  544                         an_stop(ifp, 1);
  545                         return error;
  546                 }
  547                 DPRINTF2(("an_init: txbuf %d allocated %x\n", i, fid));
  548                 sc->sc_txd[i].d_fid = fid;
  549                 sc->sc_txd[i].d_inuse = 0;
  550         }
  551         sc->sc_txcur = sc->sc_txnext = 0;
  552 
  553         IEEE80211_ADDR_COPY(sc->sc_config.an_macaddr, ic->ic_myaddr);
  554         sc->sc_config.an_scanmode = htole16(AN_SCANMODE_ACTIVE);
  555         sc->sc_config.an_authtype = htole16(AN_AUTHTYPE_OPEN);  /*XXX*/
  556         if (ic->ic_flags & IEEE80211_F_PRIVACY) {
  557                 sc->sc_config.an_authtype |=
  558                     htole16(AN_AUTHTYPE_PRIVACY_IN_USE);
  559                 if (sc->sc_use_leap)
  560                         sc->sc_config.an_authtype |=
  561                             htole16(AN_AUTHTYPE_LEAP);
  562         }
  563         sc->sc_config.an_listen_interval = htole16(ic->ic_lintval);
  564         sc->sc_config.an_beacon_period = htole16(ic->ic_lintval);
  565         if (ic->ic_flags & IEEE80211_F_PMGTON)
  566                 sc->sc_config.an_psave_mode = htole16(AN_PSAVE_PSP);
  567         else
  568                 sc->sc_config.an_psave_mode = htole16(AN_PSAVE_CAM);
  569         sc->sc_config.an_ds_channel =
  570             htole16(ieee80211_chan2ieee(ic, ic->ic_ibss_chan));
  571 
  572         switch (ic->ic_opmode) {
  573         case IEEE80211_M_STA:
  574                 sc->sc_config.an_opmode =
  575                     htole16(AN_OPMODE_INFRASTRUCTURE_STATION);
  576                 sc->sc_config.an_rxmode = htole16(AN_RXMODE_BC_MC_ADDR);
  577                 break;
  578         case IEEE80211_M_IBSS:
  579                 sc->sc_config.an_opmode = htole16(AN_OPMODE_IBSS_ADHOC);
  580                 sc->sc_config.an_rxmode = htole16(AN_RXMODE_BC_MC_ADDR);
  581                 break;
  582         case IEEE80211_M_MONITOR:
  583                 sc->sc_config.an_opmode =
  584                     htole16(AN_OPMODE_INFRASTRUCTURE_STATION);
  585                 sc->sc_config.an_rxmode =
  586                     htole16(AN_RXMODE_80211_MONITOR_ANYBSS);
  587                 sc->sc_config.an_authtype = htole16(AN_AUTHTYPE_NONE);
  588                 if (ic->ic_flags & IEEE80211_F_PRIVACY)
  589                         sc->sc_config.an_authtype |=
  590                             htole16(AN_AUTHTYPE_PRIVACY_IN_USE |
  591                             AN_AUTHTYPE_ALLOW_UNENCRYPTED);
  592                 break;
  593         default:
  594                 printf("%s: bad opmode %d\n", ifp->if_xname, ic->ic_opmode);
  595                 an_stop(ifp, 1);
  596                 return EIO;
  597         }
  598         sc->sc_config.an_rxmode |= htole16(AN_RXMODE_NO_8023_HEADER);
  599 
  600         /* Set the ssid list */
  601         memset(&sc->sc_buf, 0, sizeof(sc->sc_buf.sc_ssidlist));
  602         sc->sc_buf.sc_ssidlist.an_entry[0].an_ssid_len =
  603             htole16(ic->ic_des_esslen);
  604         if (ic->ic_des_esslen)
  605                 memcpy(sc->sc_buf.sc_ssidlist.an_entry[0].an_ssid,
  606                     ic->ic_des_essid, ic->ic_des_esslen);
  607         if (an_write_rid(sc, AN_RID_SSIDLIST, &sc->sc_buf,
  608             sizeof(sc->sc_buf.sc_ssidlist)) != 0) {
  609                 printf("%s: failed to write ssid list\n", ifp->if_xname);
  610                 an_stop(ifp, 1);
  611                 return error;
  612         }
  613 
  614         /* Set the AP list */
  615         memset(&sc->sc_buf, 0, sizeof(sc->sc_buf.sc_aplist));
  616         (void)an_write_rid(sc, AN_RID_APLIST, &sc->sc_buf,
  617             sizeof(sc->sc_buf.sc_aplist));
  618 
  619         /* Set the encapsulation */
  620         for (i = 0; i < AN_ENCAP_NENTS; i++) {
  621                 sc->sc_buf.sc_encap.an_entry[i].an_ethertype = htole16(0);
  622                 sc->sc_buf.sc_encap.an_entry[i].an_action =
  623                     htole16(AN_RXENCAP_RFC1024 | AN_TXENCAP_RFC1024);
  624         }
  625         (void)an_write_rid(sc, AN_RID_ENCAP, &sc->sc_buf,
  626             sizeof(sc->sc_buf.sc_encap));
  627 
  628         /* Set the WEP Keys */
  629         if (ic->ic_flags & IEEE80211_F_PRIVACY)
  630                 an_write_wepkey(sc, AN_RID_WEP_VOLATILE, sc->sc_wepkeys,
  631                     sc->sc_tx_key);
  632 
  633         /* Set the configuration */
  634 #ifdef AN_DEBUG
  635         if (an_debug) {
  636                 printf("write config:\n");
  637                 for (i = 0; i < sizeof(sc->sc_config) / 2; i++)
  638                         printf(" %04x", ((u_int16_t *)&sc->sc_config)[i]);
  639                 printf("\n");
  640         }
  641 #endif
  642         if (an_write_rid(sc, AN_RID_GENCONFIG, &sc->sc_config,
  643             sizeof(sc->sc_config)) != 0) {
  644                 printf("%s: failed to write config\n", ifp->if_xname);
  645                 an_stop(ifp, 1);
  646                 return error;
  647         }
  648 
  649         /* Enable the MAC */
  650         if (an_cmd(sc, AN_CMD_ENABLE, 0)) {
  651                 printf("%s: failed to enable MAC\n", sc->sc_dev.dv_xname);
  652                 an_stop(ifp, 1);
  653                 return ENXIO;
  654         }
  655         if (ifp->if_flags & IFF_PROMISC)
  656                 an_cmd(sc, AN_CMD_SET_MODE, 0xffff);
  657 
  658         ifp->if_flags |= IFF_RUNNING;
  659         ifp->if_flags &= ~IFF_OACTIVE;
  660         ic->ic_state = IEEE80211_S_INIT;
  661         if (ic->ic_opmode == IEEE80211_M_MONITOR)
  662                 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
  663 
  664         /* enable interrupts */
  665         CSR_WRITE_2(sc, AN_INT_EN, AN_INTRS);
  666         return 0;
  667 }
  668 
  669 static void
  670 an_stop(struct ifnet *ifp, int disable)
  671 {
  672         struct an_softc *sc = ifp->if_softc;
  673         int i, s;
  674 
  675         if (!sc->sc_enabled)
  676                 return;
  677 
  678         DPRINTF(("an_stop: disable %d\n", disable));
  679 
  680         s = splnet();
  681         ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1);
  682         if (!sc->sc_invalid) {
  683                 an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0);
  684                 CSR_WRITE_2(sc, AN_INT_EN, 0);
  685                 an_cmd(sc, AN_CMD_DISABLE, 0);
  686 
  687                 for (i = 0; i < AN_TX_RING_CNT; i++)
  688                         an_cmd(sc, AN_CMD_DEALLOC_MEM, sc->sc_txd[i].d_fid);
  689         }
  690 
  691         sc->sc_tx_timer = 0;
  692         ifp->if_timer = 0;
  693         ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
  694 
  695         if (disable) {
  696                 if (sc->sc_disable)
  697                         (*sc->sc_disable)(sc);
  698                 sc->sc_enabled = 0;
  699         }
  700         splx(s);
  701 }
  702 
  703 static void
  704 an_start(struct ifnet *ifp)
  705 {
  706         struct an_softc *sc = (struct an_softc *)ifp->if_softc;
  707         struct ieee80211com *ic = &sc->sc_ic;
  708         struct ieee80211_node *ni;
  709         struct ieee80211_frame *wh;
  710         struct an_txframe frmhdr;
  711         struct mbuf *m;
  712         u_int16_t len;
  713         int cur, fid;
  714 
  715         if (!sc->sc_enabled || sc->sc_invalid) {
  716                 DPRINTF(("an_start: noop: enabled %d invalid %d\n",
  717                     sc->sc_enabled, sc->sc_invalid));
  718                 return;
  719         }
  720 
  721         memset(&frmhdr, 0, sizeof(frmhdr));
  722         cur = sc->sc_txnext;
  723         for (;;) {
  724                 if (ic->ic_state != IEEE80211_S_RUN) {
  725                         DPRINTF(("an_start: not running %d\n", ic->ic_state));
  726                         break;
  727                 }
  728                 IFQ_POLL(&ifp->if_snd, m);
  729                 if (m == NULL) {
  730                         DPRINTF2(("an_start: no pending mbuf\n"));
  731                         break;
  732                 }
  733                 if (sc->sc_txd[cur].d_inuse) {
  734                         DPRINTF2(("an_start: %x/%d busy\n",
  735                             sc->sc_txd[cur].d_fid, cur));
  736                         ifp->if_flags |= IFF_OACTIVE;
  737                         break;
  738                 }
  739                 IFQ_DEQUEUE(&ifp->if_snd, m);
  740                 ifp->if_opackets++;
  741 #if NBPFILTER > 0
  742                 if (ifp->if_bpf)
  743                         bpf_mtap(ifp->if_bpf, m);
  744 #endif
  745                 if ((m = ieee80211_encap(ifp, m, &ni)) == NULL) {
  746                         ifp->if_oerrors++;
  747                         continue;
  748                 }
  749                 if (ni != NULL)
  750                         ieee80211_release_node(ic, ni);
  751 #if NBPFILTER > 0
  752                 if (ic->ic_rawbpf)
  753                         bpf_mtap(ic->ic_rawbpf, m);
  754 #endif
  755 
  756                 wh = mtod(m, struct ieee80211_frame *);
  757                 if (ic->ic_flags & IEEE80211_F_PRIVACY)
  758                         wh->i_fc[1] |= IEEE80211_FC1_WEP;
  759                 m_copydata(m, 0, sizeof(struct ieee80211_frame),
  760                     (caddr_t)&frmhdr.an_whdr);
  761 
  762                 /* insert payload length in front of llc/snap */
  763                 len = htons(m->m_pkthdr.len - sizeof(struct ieee80211_frame));
  764                 m_adj(m, sizeof(struct ieee80211_frame) - sizeof(len));
  765                 if (mtod(m, u_long) & 0x01)
  766                         memcpy(mtod(m, caddr_t), &len, sizeof(len));
  767                 else
  768                         *mtod(m, u_int16_t *) = len;
  769 
  770                 /*
  771                  * XXX Aironet firmware apparently convert the packet
  772                  * with longer than 1500 bytes in length into LLC/SNAP.
  773                  * If we have 1500 bytes in ethernet payload, it is
  774                  * 1508 bytes including LLC/SNAP and will be inserted
  775                  * additional LLC/SNAP header with 1501-1508 in its
  776                  * ethertype !!
  777                  * So we skip LLC/SNAP header and force firmware to
  778                  * convert it to LLC/SNAP again.
  779                  */
  780                 m_adj(m, sizeof(struct llc));
  781 
  782                 frmhdr.an_tx_ctl = htole16(AN_TXCTL_80211);
  783                 frmhdr.an_tx_payload_len = htole16(m->m_pkthdr.len);
  784                 frmhdr.an_gaplen = htole16(AN_TXGAP_802_11);
  785 
  786                 if (ic->ic_fixed_rate != -1)
  787                         frmhdr.an_tx_rate =
  788                             ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[
  789                             ic->ic_fixed_rate] & IEEE80211_RATE_VAL;
  790                 else
  791                         frmhdr.an_tx_rate = 0;
  792 
  793 #ifdef AN_DEBUG
  794                 if ((ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) ==
  795                     (IFF_DEBUG|IFF_LINK2)) {
  796                         ieee80211_dump_pkt((u_int8_t *)&frmhdr.an_whdr,
  797                             sizeof(struct ieee80211_frame), -1, 0);
  798                         printf(" txctl 0x%x plen %u\n",
  799                             le16toh(frmhdr.an_tx_ctl),
  800                             le16toh(frmhdr.an_tx_payload_len));
  801                 }
  802 #endif
  803                 if (sizeof(frmhdr) + AN_TXGAP_802_11 + sizeof(len) +
  804                     m->m_pkthdr.len > AN_TX_MAX_LEN) {
  805                         ifp->if_oerrors++;
  806                         m_freem(m);
  807                         continue;
  808                 }
  809 
  810                 fid = sc->sc_txd[cur].d_fid;
  811                 if (an_write_bap(sc, fid, 0, &frmhdr, sizeof(frmhdr)) != 0) {
  812                         ifp->if_oerrors++;
  813                         m_freem(m);
  814                         continue;
  815                 }
  816                 /* dummy write to avoid seek. */
  817                 an_write_bap(sc, fid, -1, &frmhdr, AN_TXGAP_802_11);
  818                 an_mwrite_bap(sc, fid, -1, m, m->m_pkthdr.len);
  819                 m_freem(m);
  820 
  821                 DPRINTF2(("an_start: send %d byte via %x/%d\n",
  822                     ntohs(len) + sizeof(struct ieee80211_frame),
  823                     fid, cur));
  824                 sc->sc_txd[cur].d_inuse = 1;
  825                 if (an_cmd(sc, AN_CMD_TX, fid)) {
  826                         printf("%s: xmit failed\n", ifp->if_xname);
  827                         sc->sc_txd[cur].d_inuse = 0;
  828                         continue;
  829                 }
  830                 sc->sc_tx_timer = 5;
  831                 ifp->if_timer = 1;
  832                 AN_INC(cur, AN_TX_RING_CNT);
  833                 sc->sc_txnext = cur;
  834         }
  835 }
  836 
  837 static int
  838 an_reset(struct an_softc *sc)
  839 {
  840 
  841         DPRINTF(("an_reset\n"));
  842 
  843         if (!sc->sc_enabled)
  844                 return ENXIO;
  845 
  846         an_cmd(sc, AN_CMD_ENABLE, 0);
  847         an_cmd(sc, AN_CMD_FW_RESTART, 0);
  848         an_cmd(sc, AN_CMD_NOOP2, 0);
  849 
  850         if (an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0) == ETIMEDOUT) {
  851                 printf("%s: reset failed\n", sc->sc_dev.dv_xname);
  852                 return ETIMEDOUT;
  853         }
  854 
  855         an_cmd(sc, AN_CMD_DISABLE, 0);
  856         return 0;
  857 }
  858 
  859 static void
  860 an_watchdog(struct ifnet *ifp)
  861 {
  862         struct an_softc *sc = ifp->if_softc;
  863 
  864         if (!sc->sc_enabled)
  865                 return;
  866 
  867         if (sc->sc_tx_timer) {
  868                 if (--sc->sc_tx_timer == 0) {
  869                         printf("%s: device timeout\n", ifp->if_xname);
  870                         ifp->if_oerrors++;
  871                         an_init(ifp);
  872                         return;
  873                 }
  874                 ifp->if_timer = 1;
  875         }
  876         ieee80211_watchdog(ifp);
  877 }
  878 
  879 static int
  880 an_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
  881 {
  882         struct an_softc *sc = ifp->if_softc;
  883         int s, error = 0;
  884 
  885         if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0)
  886                 return ENXIO;
  887 
  888         s = splnet();
  889 
  890         switch (command) {
  891         case SIOCSIFFLAGS:
  892                 if (ifp->if_flags & IFF_UP) {
  893                         if (sc->sc_enabled) {
  894                                 /*
  895                                  * To avoid rescanning another access point,
  896                                  * do not call an_init() here.  Instead, only
  897                                  * reflect promisc mode settings.
  898                                  */
  899                                 error = an_cmd(sc, AN_CMD_SET_MODE,
  900                                     (ifp->if_flags & IFF_PROMISC) ? 0xffff : 0);
  901                         } else
  902                                 error = an_init(ifp);
  903                 } else if (sc->sc_enabled)
  904                         an_stop(ifp, 1);
  905                 break;
  906         case SIOCADDMULTI:
  907         case SIOCDELMULTI:
  908                 error = ether_ioctl(ifp, command, data);
  909                 if (error == ENETRESET) {
  910                         /* we don't have multicast filter. */
  911                         error = 0;
  912                 }
  913                 break;
  914         case SIOCS80211NWKEY:
  915                 error = an_set_nwkey(sc, (struct ieee80211_nwkey *)data);
  916                         break;
  917         case SIOCG80211NWKEY:
  918                 error = an_get_nwkey(sc, (struct ieee80211_nwkey *)data);
  919                 break;
  920         default:
  921                 error = ieee80211_ioctl(ifp, command, data);
  922                 break;
  923         }
  924         if (error == ENETRESET) {
  925                 if (sc->sc_enabled)
  926                         error = an_init(ifp);
  927                 else
  928                         error = 0;
  929         }
  930         splx(s);
  931         return error;
  932 }
  933 
  934 /* TBD factor with ieee80211_media_change */
  935 static int
  936 an_media_change(struct ifnet *ifp)
  937 {
  938         struct an_softc *sc = ifp->if_softc;
  939         struct ieee80211com *ic = &sc->sc_ic;
  940         struct ifmedia_entry *ime;
  941         enum ieee80211_opmode newmode;
  942         int i, rate, error = 0;
  943 
  944         ime = ic->ic_media.ifm_cur;
  945         if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) {
  946                 i = -1;
  947         } else {
  948                 struct ieee80211_rateset *rs =
  949                     &ic->ic_sup_rates[IEEE80211_MODE_11B];
  950                 rate = ieee80211_media2rate(ime->ifm_media);
  951                 if (rate == 0)
  952                         return EINVAL;
  953                 for (i = 0; i < rs->rs_nrates; i++) {
  954                         if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate)
  955                                 break;
  956                 }
  957                 if (i == rs->rs_nrates)
  958                         return EINVAL;
  959         }
  960         if (ic->ic_fixed_rate != i) {
  961                 ic->ic_fixed_rate = i;
  962                 error = ENETRESET;
  963         }
  964 
  965         if (ime->ifm_media & IFM_IEEE80211_ADHOC)
  966                 newmode = IEEE80211_M_IBSS;
  967         else if (ime->ifm_media & IFM_IEEE80211_HOSTAP)
  968                 newmode = IEEE80211_M_HOSTAP;
  969         else if (ime->ifm_media & IFM_IEEE80211_MONITOR)
  970                 newmode = IEEE80211_M_MONITOR;
  971         else
  972                 newmode = IEEE80211_M_STA;
  973         if (ic->ic_opmode != newmode) {
  974                 ic->ic_opmode = newmode;
  975                 error = ENETRESET;
  976         }
  977         if (error == ENETRESET) {
  978                 if (sc->sc_enabled)
  979                         error = an_init(ifp);
  980                 else
  981                         error = 0;
  982         }
  983         ifp->if_baudrate = ifmedia_baudrate(ic->ic_media.ifm_cur->ifm_media);
  984 
  985         return error;
  986 }
  987 
  988 static void
  989 an_media_status(struct ifnet *ifp, struct ifmediareq *imr)
  990 {
  991         struct an_softc *sc = ifp->if_softc;
  992         struct ieee80211com *ic = &sc->sc_ic;
  993         int rate, buflen;
  994 
  995         if (sc->sc_enabled == 0) {
  996                 imr->ifm_active = IFM_IEEE80211 | IFM_NONE;
  997                 imr->ifm_status = 0;
  998                 return;
  999         }
 1000 
 1001         imr->ifm_status = IFM_AVALID;
 1002         imr->ifm_active = IFM_IEEE80211;
 1003         if (ic->ic_state == IEEE80211_S_RUN)
 1004                 imr->ifm_status |= IFM_ACTIVE;
 1005         buflen = sizeof(sc->sc_buf);
 1006         if (ic->ic_fixed_rate != -1)
 1007                 rate = ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[
 1008                     ic->ic_fixed_rate] & IEEE80211_RATE_VAL;
 1009         else if (an_read_rid(sc, AN_RID_STATUS, &sc->sc_buf, &buflen) != 0)
 1010                 rate = 0;
 1011         else
 1012                 rate = le16toh(sc->sc_buf.sc_status.an_current_tx_rate);
 1013         imr->ifm_active |= ieee80211_rate2media(ic, rate, IEEE80211_MODE_11B);
 1014         switch (ic->ic_opmode) {
 1015         case IEEE80211_M_STA:
 1016                 break;
 1017         case IEEE80211_M_IBSS:
 1018                 imr->ifm_active |= IFM_IEEE80211_ADHOC;
 1019                 break;
 1020         case IEEE80211_M_HOSTAP:
 1021                 imr->ifm_active |= IFM_IEEE80211_HOSTAP;
 1022                 break;
 1023         case IEEE80211_M_MONITOR:
 1024                 imr->ifm_active |= IFM_IEEE80211_MONITOR;
 1025                 break;
 1026         default:
 1027                 break;
 1028         }
 1029 }
 1030 
 1031 static int
 1032 an_set_nwkey(struct an_softc *sc, struct ieee80211_nwkey *nwkey)
 1033 {
 1034         int error;
 1035         struct ieee80211com *ic = &sc->sc_ic;
 1036         u_int16_t prevauth;
 1037 
 1038         error = 0;
 1039         prevauth = sc->sc_config.an_authtype;
 1040 
 1041         switch (nwkey->i_wepon) {
 1042         case IEEE80211_NWKEY_OPEN:
 1043                 sc->sc_config.an_authtype = AN_AUTHTYPE_OPEN;
 1044                 ic->ic_flags &= ~IEEE80211_F_PRIVACY;
 1045                 break;
 1046 
 1047         case IEEE80211_NWKEY_WEP:
 1048         case IEEE80211_NWKEY_WEP | IEEE80211_NWKEY_PERSIST:
 1049                 error = an_set_nwkey_wep(sc, nwkey);
 1050                 if (error == 0 || error == ENETRESET) {
 1051                         sc->sc_config.an_authtype =
 1052                             AN_AUTHTYPE_OPEN | AN_AUTHTYPE_PRIVACY_IN_USE;
 1053                         ic->ic_flags |= IEEE80211_F_PRIVACY;
 1054                 }
 1055                 break;
 1056 
 1057         case IEEE80211_NWKEY_EAP:
 1058                 error = an_set_nwkey_eap(sc, nwkey);
 1059                 if (error == 0 || error == ENETRESET) {
 1060                         sc->sc_config.an_authtype = AN_AUTHTYPE_OPEN |
 1061                             AN_AUTHTYPE_PRIVACY_IN_USE | AN_AUTHTYPE_LEAP;
 1062                         ic->ic_flags |= IEEE80211_F_PRIVACY;
 1063                 }
 1064                 break;
 1065         default:
 1066                 error = EINVAL;
 1067                 break;
 1068         }
 1069         if (error == 0 && prevauth != sc->sc_config.an_authtype)
 1070                 error = ENETRESET;
 1071         return error;
 1072 }
 1073 
 1074 static int
 1075 an_set_nwkey_wep(struct an_softc *sc, struct ieee80211_nwkey *nwkey)
 1076 {
 1077         int i, txkey, anysetkey, needreset, error;
 1078         struct an_wepkey keys[IEEE80211_WEP_NKID];
 1079 
 1080         error = 0;
 1081         memset(keys, 0, sizeof(keys));
 1082         anysetkey = needreset = 0;
 1083 
 1084         /* load argument and sanity check */
 1085         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
 1086                 keys[i].an_wep_keylen = nwkey->i_key[i].i_keylen;
 1087                 if (keys[i].an_wep_keylen < 0)
 1088                         continue;
 1089                 if (keys[i].an_wep_keylen != 0 &&
 1090                     keys[i].an_wep_keylen < IEEE80211_WEP_KEYLEN)
 1091                         return EINVAL;
 1092                 if (keys[i].an_wep_keylen > sizeof(keys[i].an_wep_key))
 1093                         return EINVAL;
 1094                 if ((error = copyin(nwkey->i_key[i].i_keydat,
 1095                     keys[i].an_wep_key, keys[i].an_wep_keylen)) != 0)
 1096                         return error;
 1097                 anysetkey++;
 1098         }
 1099         txkey = nwkey->i_defkid - 1;
 1100         if (txkey >= 0) {
 1101                 if (txkey >= IEEE80211_WEP_NKID)
 1102                         return EINVAL;
 1103                 /* default key must have a valid value */
 1104                 if (keys[txkey].an_wep_keylen == 0 ||
 1105                     (keys[txkey].an_wep_keylen < 0 &&
 1106                     sc->sc_perskeylen[txkey] == 0))
 1107                         return EINVAL;
 1108                 anysetkey++;
 1109         }
 1110         DPRINTF(("an_set_nwkey_wep: %s: %sold(%d:%d,%d,%d,%d) "
 1111             "pers(%d:%d,%d,%d,%d) new(%d:%d,%d,%d,%d)\n",
 1112             sc->sc_dev.dv_xname,
 1113             ((nwkey->i_wepon & IEEE80211_NWKEY_PERSIST) ? "persist: " : ""),
 1114             sc->sc_tx_key,
 1115             sc->sc_wepkeys[0].an_wep_keylen, sc->sc_wepkeys[1].an_wep_keylen,
 1116             sc->sc_wepkeys[2].an_wep_keylen, sc->sc_wepkeys[3].an_wep_keylen,
 1117             sc->sc_tx_perskey,
 1118             sc->sc_perskeylen[0], sc->sc_perskeylen[1],
 1119             sc->sc_perskeylen[2], sc->sc_perskeylen[3],
 1120             txkey,
 1121             keys[0].an_wep_keylen, keys[1].an_wep_keylen,
 1122             keys[2].an_wep_keylen, keys[3].an_wep_keylen));
 1123         if (!(nwkey->i_wepon & IEEE80211_NWKEY_PERSIST)) {
 1124                 /* set temporary keys */
 1125                 sc->sc_tx_key = txkey;
 1126                 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
 1127                         if (keys[i].an_wep_keylen < 0)
 1128                                 continue;
 1129                         memcpy(&sc->sc_wepkeys[i], &keys[i], sizeof(keys[i]));
 1130                 }
 1131         } else {
 1132                 /* set persist keys */
 1133                 if (anysetkey) {
 1134                         /* prepare to write nvram */
 1135                         if (!sc->sc_enabled) {
 1136                                 if (sc->sc_enable)
 1137                                         (*sc->sc_enable)(sc);
 1138                                 an_wait(sc);
 1139                                 sc->sc_enabled = 1;
 1140                                 error = an_write_wepkey(sc,
 1141                                     AN_RID_WEP_PERSISTENT, keys, txkey);
 1142                                 if (sc->sc_disable)
 1143                                         (*sc->sc_disable)(sc);
 1144                                 sc->sc_enabled = 0;
 1145                         } else {
 1146                                 an_cmd(sc, AN_CMD_DISABLE, 0);
 1147                                 error = an_write_wepkey(sc,
 1148                                     AN_RID_WEP_PERSISTENT, keys, txkey);
 1149                                 an_cmd(sc, AN_CMD_ENABLE, 0);
 1150                         }
 1151                         if (error)
 1152                                 return error;
 1153                 }
 1154                 if (txkey >= 0)
 1155                         sc->sc_tx_perskey = txkey;
 1156                 if (sc->sc_tx_key >= 0) {
 1157                         sc->sc_tx_key = -1;
 1158                         needreset++;
 1159                 }
 1160                 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
 1161                         if (sc->sc_wepkeys[i].an_wep_keylen >= 0) {
 1162                                 memset(&sc->sc_wepkeys[i].an_wep_key, 0,
 1163                                     sizeof(sc->sc_wepkeys[i].an_wep_key));
 1164                                 sc->sc_wepkeys[i].an_wep_keylen = -1;
 1165                                 needreset++;
 1166                         }
 1167                         if (keys[i].an_wep_keylen >= 0)
 1168                                 sc->sc_perskeylen[i] = keys[i].an_wep_keylen;
 1169                 }
 1170         }
 1171         if (needreset) {
 1172                 /* firmware restart to reload persistent key */
 1173                 an_reset(sc);
 1174         }
 1175         if (anysetkey || needreset)
 1176                 error = ENETRESET;
 1177         return error;
 1178 }
 1179 
 1180 static int
 1181 an_set_nwkey_eap(struct an_softc *sc, struct ieee80211_nwkey *nwkey)
 1182 {
 1183         int i, error, len;
 1184         struct ifnet *ifp = &sc->sc_ic.ic_if;
 1185         struct an_rid_leapkey *key;
 1186         u_int16_t unibuf[sizeof(key->an_key)];
 1187         static const int leap_rid[] = { AN_RID_LEAP_PASS, AN_RID_LEAP_USER };
 1188         MD4_CTX ctx;
 1189 
 1190         error = 0;
 1191 
 1192         if (nwkey->i_key[0].i_keydat == NULL &&
 1193             nwkey->i_key[1].i_keydat == NULL)
 1194                 return 0;
 1195         if (!sc->sc_enabled)
 1196                 return ENXIO;
 1197         an_cmd(sc, AN_CMD_DISABLE, 0);
 1198         key = &sc->sc_buf.sc_leapkey;
 1199         for (i = 0; i < 2; i++) {
 1200                 if (nwkey->i_key[i].i_keydat == NULL)
 1201                         continue;
 1202                 len = nwkey->i_key[i].i_keylen;
 1203                 if (len > sizeof(key->an_key))
 1204                         return EINVAL;
 1205                 memset(key, 0, sizeof(*key));
 1206                 key->an_key_len = htole16(len);
 1207                 if ((error = copyin(nwkey->i_key[i].i_keydat, key->an_key,
 1208                     len)) != 0)
 1209                         return error;
 1210                 if (i == 1) {
 1211                         /*
 1212                          * Cisco seems to use PasswordHash and PasswordHashHash
 1213                          * in RFC-2759 (MS-CHAP-V2).
 1214                          */
 1215                         memset(unibuf, 0, sizeof(unibuf));
 1216                         /* XXX: convert password to unicode */
 1217                         for (i = 0; i < len; i++)
 1218                                 unibuf[i] = key->an_key[i];
 1219                         /* set PasswordHash */
 1220                         MD4Init(&ctx);
 1221                         MD4Update(&ctx, (u_int8_t *)unibuf, len * 2);
 1222                         MD4Final(key->an_key, &ctx);
 1223                         /* set PasswordHashHash */
 1224                         MD4Init(&ctx);
 1225                         MD4Update(&ctx, key->an_key, 16);
 1226                         MD4Final(key->an_key + 16, &ctx);
 1227                         key->an_key_len = htole16(32);
 1228                 }
 1229                 if ((error = an_write_rid(sc, leap_rid[i], key,
 1230                     sizeof(*key))) != 0) {
 1231                         printf("%s: LEAP set failed\n", ifp->if_xname);
 1232                         return error;
 1233                 }
 1234         }
 1235         error = an_cmd(sc, AN_CMD_ENABLE, 0);
 1236         if (error)
 1237                 printf("%s: an_set_nwkey: failed to enable MAC\n",
 1238                     ifp->if_xname);
 1239         else
 1240                 error = ENETRESET;
 1241         return error;
 1242 }
 1243 
 1244 static int
 1245 an_get_nwkey(struct an_softc *sc, struct ieee80211_nwkey *nwkey)
 1246 {
 1247         int i, error;
 1248 
 1249         error = 0;
 1250         if (sc->sc_config.an_authtype & AN_AUTHTYPE_LEAP)
 1251                 nwkey->i_wepon = IEEE80211_NWKEY_EAP;
 1252         else if (sc->sc_config.an_authtype & AN_AUTHTYPE_PRIVACY_IN_USE)
 1253                 nwkey->i_wepon = IEEE80211_NWKEY_WEP;
 1254         else
 1255                 nwkey->i_wepon = IEEE80211_NWKEY_OPEN;
 1256         if (sc->sc_tx_key == -1)
 1257                 nwkey->i_defkid = sc->sc_tx_perskey + 1;
 1258         else
 1259                 nwkey->i_defkid = sc->sc_tx_key + 1;
 1260         if (nwkey->i_key[0].i_keydat == NULL)
 1261                 return 0;
 1262         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
 1263                 if (nwkey->i_key[i].i_keydat == NULL)
 1264                         continue;
 1265                 /* do not show any keys to non-root user */
 1266                 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0)
 1267                         break;
 1268                 nwkey->i_key[i].i_keylen = sc->sc_wepkeys[i].an_wep_keylen;
 1269                 if (nwkey->i_key[i].i_keylen < 0) {
 1270                         if (sc->sc_perskeylen[i] == 0)
 1271                                 nwkey->i_key[i].i_keylen = 0;
 1272                         continue;
 1273                 }
 1274                 if ((error = copyout(sc->sc_wepkeys[i].an_wep_key,
 1275                     nwkey->i_key[i].i_keydat,
 1276                     sc->sc_wepkeys[i].an_wep_keylen)) != 0)
 1277                         break;
 1278         }
 1279         return error;
 1280 }
 1281 
 1282 static int
 1283 an_write_wepkey(struct an_softc *sc, int type, struct an_wepkey *keys, int kid)
 1284 {
 1285         int i, error;
 1286         struct an_rid_wepkey *akey;
 1287 
 1288         error = 0;
 1289         akey = &sc->sc_buf.sc_wepkey;
 1290         memset(akey, 0, sizeof(struct an_rid_wepkey));
 1291         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
 1292                 if (keys[i].an_wep_keylen < 0 ||
 1293                     keys[i].an_wep_keylen > sizeof(akey->an_key))
 1294                         continue;
 1295                 akey->an_key_len = htole16(keys[i].an_wep_keylen);
 1296                 akey->an_key_index = htole16(i);
 1297                 akey->an_mac_addr[0] = 1;       /* default mac */
 1298                 memcpy(akey->an_key, keys[i].an_wep_key, keys[i].an_wep_keylen);
 1299                 if ((error = an_write_rid(sc, type, akey, sizeof(*akey))) != 0)
 1300                         return error;
 1301         }
 1302         if (kid >= 0) {
 1303                 akey->an_key_index = htole16(0xffff);
 1304                 akey->an_mac_addr[0] = kid;
 1305                 akey->an_key_len = htole16(0);
 1306                 memset(akey->an_key, 0, sizeof(akey->an_key));
 1307                 error = an_write_rid(sc, type, akey, sizeof(*akey));
 1308         }
 1309         return error;
 1310 }
 1311 
 1312 #ifdef AN_DEBUG
 1313 static void
 1314 an_dump_pkt(const char *devname, struct mbuf *m)
 1315 {
 1316         int col, col0, i;
 1317         uint8_t *pkt = mtod(m, uint8_t *);
 1318         const char *delim = "";
 1319         int delimw = 0;
 1320 
 1321         printf("%s: pkt ", devname);
 1322         col = col0 = strlen(devname) + strlen(": pkt ");
 1323         for (i = 0; i < m->m_len; i++) {
 1324                 printf("%s%02x", delim, pkt[i]);
 1325                 delim = ":";
 1326                 delimw = 1;
 1327                 col += delimw + 2;
 1328                 if (col >= 72) {
 1329                         printf("\n%*s", col0, "");
 1330                         col = col0;
 1331                         delim = "";
 1332                         delimw = 0;
 1333                 }
 1334         }
 1335         if (col != 0)
 1336                 printf("\n");
 1337 }
 1338 #endif /* AN_DEBUG */
 1339 
 1340 /*
 1341  * Low level functions
 1342  */
 1343 
 1344 static void
 1345 an_rx_intr(struct an_softc *sc)
 1346 {
 1347         struct ieee80211com *ic = &sc->sc_ic;
 1348         struct ifnet *ifp = &ic->ic_if;
 1349         struct ieee80211_frame *wh;
 1350         struct ieee80211_node *ni;
 1351         struct an_rxframe frmhdr;
 1352         struct mbuf *m;
 1353         u_int16_t status;
 1354         int fid, gaplen, len, off;
 1355         uint8_t *gap;
 1356 
 1357         fid = CSR_READ_2(sc, AN_RX_FID);
 1358 
 1359         /* First read in the frame header */
 1360         if (an_read_bap(sc, fid, 0, &frmhdr, sizeof(frmhdr)) != 0) {
 1361                 CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1362                 ifp->if_ierrors++;
 1363                 DPRINTF(("an_rx_intr: read fid %x failed\n", fid));
 1364                 return;
 1365         }
 1366 
 1367 #ifdef AN_DEBUG
 1368         if ((ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == (IFF_DEBUG|IFF_LINK2)) {
 1369                 ieee80211_dump_pkt((u_int8_t *)&frmhdr.an_whdr,
 1370                     sizeof(struct ieee80211_frame), frmhdr.an_rx_rate,
 1371                     frmhdr.an_rx_signal_strength);
 1372                 printf(" time 0x%x status 0x%x plen %u chan %u"
 1373                     " plcp %02x %02x %02x %02x gap %u\n",
 1374                     le32toh(frmhdr.an_rx_time), le16toh(frmhdr.an_rx_status),
 1375                     le16toh(frmhdr.an_rx_payload_len), frmhdr.an_rx_chan,
 1376                     frmhdr.an_plcp_hdr[0], frmhdr.an_plcp_hdr[1],
 1377                     frmhdr.an_plcp_hdr[2], frmhdr.an_plcp_hdr[3],
 1378                     le16toh(frmhdr.an_gaplen));
 1379         }
 1380 #endif
 1381 
 1382         status = le16toh(frmhdr.an_rx_status);
 1383         if ((status & AN_STAT_ERRSTAT) != 0 &&
 1384             ic->ic_opmode != IEEE80211_M_MONITOR) {
 1385                 CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1386                 ifp->if_ierrors++;
 1387                 DPRINTF(("an_rx_intr: fid %x status %x\n", fid, status));
 1388                 return;
 1389         }
 1390 
 1391         /* the payload length field includes a 16-bit "mystery field" */
 1392         len = le16toh(frmhdr.an_rx_payload_len) - sizeof(uint16_t);
 1393         off = ALIGN(sizeof(struct ieee80211_frame));
 1394 
 1395         if (off + len > MCLBYTES) {
 1396                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
 1397                         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1398                         ifp->if_ierrors++;
 1399                         DPRINTF(("an_rx_intr: oversized packet %d\n", len));
 1400                         return;
 1401                 }
 1402                 len = 0;
 1403         }
 1404 
 1405         MGETHDR(m, M_DONTWAIT, MT_DATA);
 1406         if (m == NULL) {
 1407                 CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1408                 ifp->if_ierrors++;
 1409                 DPRINTF(("an_rx_intr: MGET failed\n"));
 1410                 return;
 1411         }
 1412         if (off + len + AN_GAPLEN_MAX > MHLEN) {
 1413                 MCLGET(m, M_DONTWAIT);
 1414                 if ((m->m_flags & M_EXT) == 0) {
 1415                         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1416                         m_freem(m);
 1417                         ifp->if_ierrors++;
 1418                         DPRINTF(("an_rx_intr: MCLGET failed\n"));
 1419                         return;
 1420                 }
 1421         }
 1422         m->m_data += off - sizeof(struct ieee80211_frame);
 1423 
 1424         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
 1425                 gaplen = le16toh(frmhdr.an_gaplen);
 1426                 if (gaplen > AN_GAPLEN_MAX) {
 1427                         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1428                         m_freem(m);
 1429                         ifp->if_ierrors++;
 1430                         DPRINTF(("%s: gap too long\n", __func__));
 1431                         return;
 1432                 }
 1433                 /*
 1434                  * We don't need the 16-bit mystery field (payload length?),
 1435                  * so read it into the region reserved for the 802.11 header.
 1436                  *
 1437                  * When Cisco Aironet 350 cards w/ firmware version 5 or
 1438                  * greater operate with certain Cisco 350 APs,
 1439                  * the "gap" is filled with the SNAP header.  Read
 1440                  * it in after the 802.11 header.
 1441                  */
 1442                 gap = m->m_data + sizeof(struct ieee80211_frame) -
 1443                     sizeof(uint16_t);
 1444                 an_read_bap(sc, fid, -1, gap, gaplen + sizeof(u_int16_t));
 1445 #ifdef AN_DEBUG
 1446                 if ((ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) ==
 1447                     (IFF_DEBUG|IFF_LINK2)) {
 1448                         int i;
 1449                         printf(" gap&len");
 1450                         for (i = 0; i < gaplen + sizeof(u_int16_t); i++)
 1451                                 printf(" %02x", gap[i]);
 1452                         printf("\n");
 1453                 }
 1454 #endif
 1455         } else
 1456                 gaplen = 0;
 1457 
 1458         an_read_bap(sc, fid, -1,
 1459             m->m_data + sizeof(struct ieee80211_frame) + gaplen, len);
 1460         m->m_pkthdr.len = m->m_len = sizeof(struct ieee80211_frame) + gaplen +
 1461             len;
 1462 
 1463         memcpy(m->m_data, &frmhdr.an_whdr, sizeof(struct ieee80211_frame));
 1464         m->m_pkthdr.rcvif = ifp;
 1465         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
 1466 
 1467         wh = mtod(m, struct ieee80211_frame *);
 1468         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
 1469                 /*
 1470                  * WEP is decrypted by hardware. Clear WEP bit
 1471                  * header for ieee80211_input().
 1472                  */
 1473                 wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
 1474         }
 1475 
 1476 #ifdef AN_DEBUG
 1477         if (an_debug > 1)
 1478                 an_dump_pkt(sc->sc_dev.dv_xname, m);
 1479 #endif /* AN_DEBUG */
 1480 
 1481         ni = ieee80211_find_rxnode(ic, wh);
 1482         ieee80211_input(ifp, m, ni, frmhdr.an_rx_signal_strength,
 1483             le32toh(frmhdr.an_rx_time));
 1484         ieee80211_release_node(ic, ni);
 1485 }
 1486 
 1487 static void
 1488 an_tx_intr(struct an_softc *sc, int status)
 1489 {
 1490         struct ifnet *ifp = &sc->sc_ic.ic_if;
 1491         int cur, fid;
 1492 
 1493         sc->sc_tx_timer = 0;
 1494         ifp->if_flags &= ~IFF_OACTIVE;
 1495 
 1496         fid = CSR_READ_2(sc, AN_TX_CMP_FID);
 1497         CSR_WRITE_2(sc, AN_EVENT_ACK, status & (AN_EV_TX | AN_EV_TX_EXC));
 1498 
 1499         if (status & AN_EV_TX_EXC)
 1500                 ifp->if_oerrors++;
 1501         else
 1502                 ifp->if_opackets++;
 1503 
 1504         cur = sc->sc_txcur;
 1505         if (sc->sc_txd[cur].d_fid == fid) {
 1506                 sc->sc_txd[cur].d_inuse = 0;
 1507                 DPRINTF2(("an_tx_intr: sent %x/%d\n", fid, cur));
 1508                 AN_INC(cur, AN_TX_RING_CNT);
 1509                 sc->sc_txcur = cur;
 1510         } else {
 1511                 for (cur = 0; cur < AN_TX_RING_CNT; cur++) {
 1512                         if (fid == sc->sc_txd[cur].d_fid) {
 1513                                 sc->sc_txd[cur].d_inuse = 0;
 1514                                 break;
 1515                         }
 1516                 }
 1517                 if (ifp->if_flags & IFF_DEBUG)
 1518                         printf("%s: tx mismatch: "
 1519                             "expected %x(%d), actual %x(%d)\n",
 1520                             sc->sc_dev.dv_xname,
 1521                             sc->sc_txd[sc->sc_txcur].d_fid, sc->sc_txcur,
 1522                             fid, cur);
 1523         }
 1524 
 1525         return;
 1526 }
 1527 
 1528 static void
 1529 an_linkstat_intr(struct an_softc *sc)
 1530 {
 1531         struct ieee80211com *ic = &sc->sc_ic;
 1532         u_int16_t status;
 1533 
 1534         status = CSR_READ_2(sc, AN_LINKSTAT);
 1535         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_LINKSTAT);
 1536         DPRINTF(("an_linkstat_intr: status 0x%x\n", status));
 1537 
 1538         if (status == AN_LINKSTAT_ASSOCIATED) {
 1539                 if (ic->ic_state != IEEE80211_S_RUN ||
 1540                     ic->ic_opmode == IEEE80211_M_IBSS)
 1541                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
 1542         } else {
 1543                 if (ic->ic_opmode == IEEE80211_M_STA)
 1544                         ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
 1545         }
 1546 }
 1547 
 1548 /* Must be called at proper protection level! */
 1549 static int
 1550 an_cmd(struct an_softc *sc, int cmd, int val)
 1551 {
 1552         int i, status;
 1553 
 1554         /* make sure that previous command completed */
 1555         if (CSR_READ_2(sc, AN_COMMAND) & AN_CMD_BUSY) {
 1556                 if (sc->sc_ic.ic_if.if_flags & IFF_DEBUG)
 1557                         printf("%s: command 0x%x busy\n", sc->sc_dev.dv_xname,
 1558                             CSR_READ_2(sc, AN_COMMAND));
 1559                 CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_CLR_STUCK_BUSY);
 1560         }
 1561 
 1562         CSR_WRITE_2(sc, AN_PARAM0, val);
 1563         CSR_WRITE_2(sc, AN_PARAM1, 0);
 1564         CSR_WRITE_2(sc, AN_PARAM2, 0);
 1565         CSR_WRITE_2(sc, AN_COMMAND, cmd);
 1566 
 1567         if (cmd == AN_CMD_FW_RESTART) {
 1568                 /* XXX: should sleep here */
 1569                 DELAY(100*1000);
 1570         }
 1571 
 1572         for (i = 0; i < AN_TIMEOUT; i++) {
 1573                 if (CSR_READ_2(sc, AN_EVENT_STAT) & AN_EV_CMD)
 1574                         break;
 1575                 DELAY(10);
 1576         }
 1577 
 1578         status = CSR_READ_2(sc, AN_STATUS);
 1579 
 1580         /* clear stuck command busy if necessary */
 1581         if (CSR_READ_2(sc, AN_COMMAND) & AN_CMD_BUSY)
 1582                 CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_CLR_STUCK_BUSY);
 1583 
 1584         /* Ack the command */
 1585         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_CMD);
 1586 
 1587         if (i == AN_TIMEOUT) {
 1588                 if (sc->sc_ic.ic_if.if_flags & IFF_DEBUG)
 1589                         printf("%s: command 0x%x param 0x%x timeout\n",
 1590                             sc->sc_dev.dv_xname, cmd, val);
 1591                 return ETIMEDOUT;
 1592         }
 1593         if (status & AN_STAT_CMD_RESULT) {
 1594                 if (sc->sc_ic.ic_if.if_flags & IFF_DEBUG)
 1595                         printf("%s: command 0x%x param 0x%x status 0x%x "
 1596                             "resp 0x%x 0x%x 0x%x\n",
 1597                             sc->sc_dev.dv_xname, cmd, val, status,
 1598                             CSR_READ_2(sc, AN_RESP0), CSR_READ_2(sc, AN_RESP1),
 1599                             CSR_READ_2(sc, AN_RESP2));
 1600                 return EIO;
 1601         }
 1602 
 1603         return 0;
 1604 }
 1605 
 1606 
 1607 /*
 1608  * Wait for firmware come up after power enabled.
 1609  */
 1610 static void
 1611 an_wait(struct an_softc *sc)
 1612 {
 1613         int i;
 1614 
 1615         CSR_WRITE_2(sc, AN_COMMAND, AN_CMD_NOOP2);
 1616         for (i = 0; i < 3*hz; i++) {
 1617                 if (CSR_READ_2(sc, AN_EVENT_STAT) & AN_EV_CMD)
 1618                         break;
 1619                 (void)tsleep(sc, PWAIT, "anatch", 1);
 1620         }
 1621         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_CMD);
 1622 }
 1623 
 1624 static int
 1625 an_seek_bap(struct an_softc *sc, int id, int off)
 1626 {
 1627         int i, status;
 1628 
 1629         CSR_WRITE_2(sc, AN_SEL0, id);
 1630         CSR_WRITE_2(sc, AN_OFF0, off);
 1631 
 1632         for (i = 0; ; i++) {
 1633                 status = CSR_READ_2(sc, AN_OFF0);
 1634                 if ((status & AN_OFF_BUSY) == 0)
 1635                         break;
 1636                 if (i == AN_TIMEOUT) {
 1637                         printf("%s: timeout in an_seek_bap to 0x%x/0x%x\n",
 1638                             sc->sc_dev.dv_xname, id, off);
 1639                         sc->sc_bap_off = AN_OFF_ERR;    /* invalidate */
 1640                         return ETIMEDOUT;
 1641                 }
 1642                 DELAY(10);
 1643         }
 1644         if (status & AN_OFF_ERR) {
 1645                 printf("%s: failed in an_seek_bap to 0x%x/0x%x\n",
 1646                     sc->sc_dev.dv_xname, id, off);
 1647                 sc->sc_bap_off = AN_OFF_ERR;    /* invalidate */
 1648                 return EIO;
 1649         }
 1650         sc->sc_bap_id = id;
 1651         sc->sc_bap_off = off;
 1652         return 0;
 1653 }
 1654 
 1655 static int
 1656 an_read_bap(struct an_softc *sc, int id, int off, void *buf, int buflen)
 1657 {
 1658         int error, cnt;
 1659 
 1660         if (buflen == 0)
 1661                 return 0;
 1662         if (off == -1)
 1663                 off = sc->sc_bap_off;
 1664         if (id != sc->sc_bap_id || off != sc->sc_bap_off) {
 1665                 if ((error = an_seek_bap(sc, id, off)) != 0)
 1666                         return EIO;
 1667         }
 1668 
 1669         cnt = (buflen + 1) / 2;
 1670         CSR_READ_MULTI_STREAM_2(sc, AN_DATA0, (u_int16_t *)buf, cnt);
 1671         sc->sc_bap_off += cnt * 2;
 1672         return 0;
 1673 }
 1674 
 1675 static int
 1676 an_write_bap(struct an_softc *sc, int id, int off, void *buf, int buflen)
 1677 {
 1678         int error, cnt;
 1679 
 1680         if (buflen == 0)
 1681                 return 0;
 1682         if (off == -1)
 1683                 off = sc->sc_bap_off;
 1684         if (id != sc->sc_bap_id || off != sc->sc_bap_off) {
 1685                 if ((error = an_seek_bap(sc, id, off)) != 0)
 1686                         return EIO;
 1687         }
 1688 
 1689         cnt = (buflen + 1) / 2;
 1690         CSR_WRITE_MULTI_STREAM_2(sc, AN_DATA0, (u_int16_t *)buf, cnt);
 1691         sc->sc_bap_off += cnt * 2;
 1692         return 0;
 1693 }
 1694 
 1695 static int
 1696 an_mwrite_bap(struct an_softc *sc, int id, int off, struct mbuf *m, int totlen)
 1697 {
 1698         int error, len, cnt;
 1699 
 1700         if (off == -1)
 1701                 off = sc->sc_bap_off;
 1702         if (id != sc->sc_bap_id || off != sc->sc_bap_off) {
 1703                 if ((error = an_seek_bap(sc, id, off)) != 0)
 1704                         return EIO;
 1705         }
 1706 
 1707         for (len = 0; m != NULL; m = m->m_next) {
 1708                 if (m->m_len == 0)
 1709                         continue;
 1710                 len = min(m->m_len, totlen);
 1711 
 1712                 if ((mtod(m, u_long) & 0x1) || (len & 0x1)) {
 1713                         m_copydata(m, 0, totlen, (caddr_t)&sc->sc_buf.sc_txbuf);
 1714                         cnt = (totlen + 1) / 2;
 1715                         CSR_WRITE_MULTI_STREAM_2(sc, AN_DATA0,
 1716                             sc->sc_buf.sc_val, cnt);
 1717                         off += cnt * 2;
 1718                         break;
 1719                 }
 1720                 cnt = len / 2;
 1721                 CSR_WRITE_MULTI_STREAM_2(sc, AN_DATA0, mtod(m, u_int16_t *),
 1722                     cnt);
 1723                 off += len;
 1724                 totlen -= len;
 1725         }
 1726         sc->sc_bap_off = off;
 1727         return 0;
 1728 }
 1729 
 1730 static int
 1731 an_alloc_fid(struct an_softc *sc, int len, int *idp)
 1732 {
 1733         int i;
 1734 
 1735         if (an_cmd(sc, AN_CMD_ALLOC_MEM, len)) {
 1736                 printf("%s: failed to allocate %d bytes on NIC\n",
 1737                     sc->sc_dev.dv_xname, len);
 1738                 return ENOMEM;
 1739         }
 1740 
 1741         for (i = 0; i < AN_TIMEOUT; i++) {
 1742                 if (CSR_READ_2(sc, AN_EVENT_STAT) & AN_EV_ALLOC)
 1743                         break;
 1744                 if (i == AN_TIMEOUT) {
 1745                         printf("%s: timeout in alloc\n", sc->sc_dev.dv_xname);
 1746                         return ETIMEDOUT;
 1747                 }
 1748                 DELAY(10);
 1749         }
 1750 
 1751         *idp = CSR_READ_2(sc, AN_ALLOC_FID);
 1752         CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_ALLOC);
 1753         return 0;
 1754 }
 1755 
 1756 static int
 1757 an_read_rid(struct an_softc *sc, int rid, void *buf, int *buflenp)
 1758 {
 1759         int error;
 1760         u_int16_t len;
 1761 
 1762         /* Tell the NIC to enter record read mode. */
 1763         error = an_cmd(sc, AN_CMD_ACCESS | AN_ACCESS_READ, rid);
 1764         if (error)
 1765                 return error;
 1766 
 1767         /* length in byte, including length itself */
 1768         error = an_read_bap(sc, rid, 0, &len, sizeof(len));
 1769         if (error)
 1770                 return error;
 1771 
 1772         len = le16toh(len) - 2;
 1773         if (*buflenp < len) {
 1774                 printf("%s: record buffer is too small, "
 1775                     "rid=%x, size=%d, len=%d\n",
 1776                     sc->sc_dev.dv_xname, rid, *buflenp, len);
 1777                 return ENOSPC;
 1778         }
 1779         *buflenp = len;
 1780         return an_read_bap(sc, rid, sizeof(len), buf, len);
 1781 }
 1782 
 1783 static int
 1784 an_write_rid(struct an_softc *sc, int rid, void *buf, int buflen)
 1785 {
 1786         int error;
 1787         u_int16_t len;
 1788 
 1789         /* length in byte, including length itself */
 1790         len = htole16(buflen + 2);
 1791 
 1792         error = an_write_bap(sc, rid, 0, &len, sizeof(len));
 1793         if (error)
 1794                 return error;
 1795         error = an_write_bap(sc, rid, sizeof(len), buf, buflen);
 1796         if (error)
 1797                 return error;
 1798 
 1799         return an_cmd(sc, AN_CMD_ACCESS | AN_ACCESS_WRITE, rid);
 1800 }
 1801 
 1802 static int
 1803 an_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
 1804 {
 1805         struct an_softc *sc = ic->ic_softc;
 1806         struct ieee80211_node *ni = ic->ic_bss;
 1807         enum ieee80211_state ostate;
 1808         int buflen;
 1809 
 1810         ostate = ic->ic_state;
 1811         DPRINTF(("an_newstate: %s -> %s\n", ieee80211_state_name[ostate],
 1812             ieee80211_state_name[nstate]));
 1813 
 1814         switch (nstate) {
 1815         case IEEE80211_S_INIT:
 1816                 ic->ic_flags &= ~IEEE80211_F_IBSSON;
 1817                 return (*sc->sc_newstate)(ic, nstate, arg);
 1818 
 1819         case IEEE80211_S_RUN:
 1820                 buflen = sizeof(sc->sc_buf);
 1821                 an_read_rid(sc, AN_RID_STATUS, &sc->sc_buf, &buflen);
 1822                 IEEE80211_ADDR_COPY(ni->ni_bssid,
 1823                     sc->sc_buf.sc_status.an_cur_bssid);
 1824                 IEEE80211_ADDR_COPY(ni->ni_macaddr, ni->ni_bssid);
 1825                 ni->ni_chan = &ic->ic_channels[
 1826                     le16toh(sc->sc_buf.sc_status.an_cur_channel)];
 1827                 ni->ni_esslen = le16toh(sc->sc_buf.sc_status.an_ssidlen);
 1828                 if (ni->ni_esslen > IEEE80211_NWID_LEN)
 1829                         ni->ni_esslen = IEEE80211_NWID_LEN;     /*XXX*/
 1830                 memcpy(ni->ni_essid, sc->sc_buf.sc_status.an_ssid,
 1831                     ni->ni_esslen);
 1832                 ni->ni_rates = ic->ic_sup_rates[IEEE80211_MODE_11B];    /*XXX*/
 1833                 if (ic->ic_if.if_flags & IFF_DEBUG) {
 1834                         printf("%s: ", sc->sc_dev.dv_xname);
 1835                         if (ic->ic_opmode == IEEE80211_M_STA)
 1836                                 printf("associated ");
 1837                         else
 1838                                 printf("synchronized ");
 1839                         printf("with %s ssid ", ether_sprintf(ni->ni_bssid));
 1840                         ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
 1841                         printf(" channel %u start %uMb\n",
 1842                             le16toh(sc->sc_buf.sc_status.an_cur_channel),
 1843                             le16toh(sc->sc_buf.sc_status.an_current_tx_rate)/2);
 1844                 }
 1845                 break;
 1846 
 1847         default:
 1848                 break;
 1849         }
 1850         ic->ic_state = nstate;
 1851         /* skip standard ieee80211 handling */
 1852         return 0;
 1853 }

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