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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/dev/ral/rt2560.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*      $FreeBSD: releng/11.0/sys/dev/ral/rt2560.c 300752 2016-05-26 16:05:19Z avos $   */
    2 
    3 /*-
    4  * Copyright (c) 2005, 2006
    5  *      Damien Bergamini <damien.bergamini@free.fr>
    6  *
    7  * Permission to use, copy, modify, and distribute this software for any
    8  * purpose with or without fee is hereby granted, provided that the above
    9  * copyright notice and this permission notice appear in all copies.
   10  *
   11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   18  */
   19 
   20 #include <sys/cdefs.h>
   21 __FBSDID("$FreeBSD: releng/11.0/sys/dev/ral/rt2560.c 300752 2016-05-26 16:05:19Z avos $");
   22 
   23 /*-
   24  * Ralink Technology RT2560 chipset driver
   25  * http://www.ralinktech.com/
   26  */
   27 
   28 #include <sys/param.h>
   29 #include <sys/sysctl.h>
   30 #include <sys/sockio.h>
   31 #include <sys/mbuf.h>
   32 #include <sys/kernel.h>
   33 #include <sys/socket.h>
   34 #include <sys/systm.h>
   35 #include <sys/malloc.h>
   36 #include <sys/lock.h>
   37 #include <sys/mutex.h>
   38 #include <sys/module.h>
   39 #include <sys/bus.h>
   40 #include <sys/endian.h>
   41 
   42 #include <machine/bus.h>
   43 #include <machine/resource.h>
   44 #include <sys/rman.h>
   45 
   46 #include <net/bpf.h>
   47 #include <net/if.h>
   48 #include <net/if_var.h>
   49 #include <net/if_arp.h>
   50 #include <net/ethernet.h>
   51 #include <net/if_dl.h>
   52 #include <net/if_media.h>
   53 #include <net/if_types.h>
   54 
   55 #include <net80211/ieee80211_var.h>
   56 #include <net80211/ieee80211_radiotap.h>
   57 #include <net80211/ieee80211_regdomain.h>
   58 #include <net80211/ieee80211_ratectl.h>
   59 
   60 #include <netinet/in.h>
   61 #include <netinet/in_systm.h>
   62 #include <netinet/in_var.h>
   63 #include <netinet/ip.h>
   64 #include <netinet/if_ether.h>
   65 
   66 #include <dev/ral/rt2560reg.h>
   67 #include <dev/ral/rt2560var.h>
   68 
   69 #define RT2560_RSSI(sc, rssi)                                   \
   70         ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ?      \
   71          ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0)
   72 
   73 #define RAL_DEBUG
   74 #ifdef RAL_DEBUG
   75 #define DPRINTF(sc, fmt, ...) do {                              \
   76         if (sc->sc_debug > 0)                                   \
   77                 printf(fmt, __VA_ARGS__);                       \
   78 } while (0)
   79 #define DPRINTFN(sc, n, fmt, ...) do {                          \
   80         if (sc->sc_debug >= (n))                                \
   81                 printf(fmt, __VA_ARGS__);                       \
   82 } while (0)
   83 #else
   84 #define DPRINTF(sc, fmt, ...)
   85 #define DPRINTFN(sc, n, fmt, ...)
   86 #endif
   87 
   88 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *,
   89                             const char [IFNAMSIZ], int, enum ieee80211_opmode,
   90                             int, const uint8_t [IEEE80211_ADDR_LEN],
   91                             const uint8_t [IEEE80211_ADDR_LEN]);
   92 static void             rt2560_vap_delete(struct ieee80211vap *);
   93 static void             rt2560_dma_map_addr(void *, bus_dma_segment_t *, int,
   94                             int);
   95 static int              rt2560_alloc_tx_ring(struct rt2560_softc *,
   96                             struct rt2560_tx_ring *, int);
   97 static void             rt2560_reset_tx_ring(struct rt2560_softc *,
   98                             struct rt2560_tx_ring *);
   99 static void             rt2560_free_tx_ring(struct rt2560_softc *,
  100                             struct rt2560_tx_ring *);
  101 static int              rt2560_alloc_rx_ring(struct rt2560_softc *,
  102                             struct rt2560_rx_ring *, int);
  103 static void             rt2560_reset_rx_ring(struct rt2560_softc *,
  104                             struct rt2560_rx_ring *);
  105 static void             rt2560_free_rx_ring(struct rt2560_softc *,
  106                             struct rt2560_rx_ring *);
  107 static int              rt2560_newstate(struct ieee80211vap *,
  108                             enum ieee80211_state, int);
  109 static uint16_t         rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
  110 static void             rt2560_encryption_intr(struct rt2560_softc *);
  111 static void             rt2560_tx_intr(struct rt2560_softc *);
  112 static void             rt2560_prio_intr(struct rt2560_softc *);
  113 static void             rt2560_decryption_intr(struct rt2560_softc *);
  114 static void             rt2560_rx_intr(struct rt2560_softc *);
  115 static void             rt2560_beacon_update(struct ieee80211vap *, int item);
  116 static void             rt2560_beacon_expire(struct rt2560_softc *);
  117 static void             rt2560_wakeup_expire(struct rt2560_softc *);
  118 static void             rt2560_scan_start(struct ieee80211com *);
  119 static void             rt2560_scan_end(struct ieee80211com *);
  120 static void             rt2560_getradiocaps(struct ieee80211com *, int, int *,
  121                             struct ieee80211_channel[]);
  122 static void             rt2560_set_channel(struct ieee80211com *);
  123 static void             rt2560_setup_tx_desc(struct rt2560_softc *,
  124                             struct rt2560_tx_desc *, uint32_t, int, int, int,
  125                             bus_addr_t);
  126 static int              rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *,
  127                             struct ieee80211_node *);
  128 static int              rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *,
  129                             struct ieee80211_node *);
  130 static int              rt2560_tx_data(struct rt2560_softc *, struct mbuf *,
  131                             struct ieee80211_node *);
  132 static int              rt2560_transmit(struct ieee80211com *, struct mbuf *);
  133 static void             rt2560_start(struct rt2560_softc *);
  134 static void             rt2560_watchdog(void *);
  135 static void             rt2560_parent(struct ieee80211com *);
  136 static void             rt2560_bbp_write(struct rt2560_softc *, uint8_t,
  137                             uint8_t);
  138 static uint8_t          rt2560_bbp_read(struct rt2560_softc *, uint8_t);
  139 static void             rt2560_rf_write(struct rt2560_softc *, uint8_t,
  140                             uint32_t);
  141 static void             rt2560_set_chan(struct rt2560_softc *,
  142                             struct ieee80211_channel *);
  143 #if 0
  144 static void             rt2560_disable_rf_tune(struct rt2560_softc *);
  145 #endif
  146 static void             rt2560_enable_tsf_sync(struct rt2560_softc *);
  147 static void             rt2560_enable_tsf(struct rt2560_softc *);
  148 static void             rt2560_update_plcp(struct rt2560_softc *);
  149 static void             rt2560_update_slot(struct ieee80211com *);
  150 static void             rt2560_set_basicrates(struct rt2560_softc *,
  151                             const struct ieee80211_rateset *);
  152 static void             rt2560_update_led(struct rt2560_softc *, int, int);
  153 static void             rt2560_set_bssid(struct rt2560_softc *, const uint8_t *);
  154 static void             rt2560_set_macaddr(struct rt2560_softc *,
  155                             const uint8_t *);
  156 static void             rt2560_get_macaddr(struct rt2560_softc *, uint8_t *);
  157 static void             rt2560_update_promisc(struct ieee80211com *);
  158 static const char       *rt2560_get_rf(int);
  159 static void             rt2560_read_config(struct rt2560_softc *);
  160 static int              rt2560_bbp_init(struct rt2560_softc *);
  161 static void             rt2560_set_txantenna(struct rt2560_softc *, int);
  162 static void             rt2560_set_rxantenna(struct rt2560_softc *, int);
  163 static void             rt2560_init_locked(struct rt2560_softc *);
  164 static void             rt2560_init(void *);
  165 static void             rt2560_stop_locked(struct rt2560_softc *);
  166 static int              rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *,
  167                                 const struct ieee80211_bpf_params *);
  168 
  169 static const struct {
  170         uint32_t        reg;
  171         uint32_t        val;
  172 } rt2560_def_mac[] = {
  173         RT2560_DEF_MAC
  174 };
  175 
  176 static const struct {
  177         uint8_t reg;
  178         uint8_t val;
  179 } rt2560_def_bbp[] = {
  180         RT2560_DEF_BBP
  181 };
  182 
  183 static const uint32_t rt2560_rf2522_r2[]    = RT2560_RF2522_R2;
  184 static const uint32_t rt2560_rf2523_r2[]    = RT2560_RF2523_R2;
  185 static const uint32_t rt2560_rf2524_r2[]    = RT2560_RF2524_R2;
  186 static const uint32_t rt2560_rf2525_r2[]    = RT2560_RF2525_R2;
  187 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2;
  188 static const uint32_t rt2560_rf2525e_r2[]   = RT2560_RF2525E_R2;
  189 static const uint32_t rt2560_rf2526_r2[]    = RT2560_RF2526_R2;
  190 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2;
  191 
  192 static const uint8_t rt2560_chan_2ghz[] =
  193         { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 };
  194 
  195 static const uint8_t rt2560_chan_5ghz[] =
  196         { 36, 40, 44, 48, 52, 56, 60, 64,
  197           100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140,
  198           149, 153, 157, 161 };
  199 
  200 static const struct {
  201         uint8_t         chan;
  202         uint32_t        r1, r2, r4;
  203 } rt2560_rf5222[] = {
  204         RT2560_RF5222
  205 };
  206 
  207 int
  208 rt2560_attach(device_t dev, int id)
  209 {
  210         struct rt2560_softc *sc = device_get_softc(dev);
  211         struct ieee80211com *ic = &sc->sc_ic;
  212         int error;
  213 
  214         sc->sc_dev = dev;
  215 
  216         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
  217             MTX_DEF | MTX_RECURSE);
  218 
  219         callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0);
  220         mbufq_init(&sc->sc_snd, ifqmaxlen);
  221 
  222         /* retrieve RT2560 rev. no */
  223         sc->asic_rev = RAL_READ(sc, RT2560_CSR0);
  224 
  225         /* retrieve RF rev. no and various other things from EEPROM */
  226         rt2560_read_config(sc);
  227 
  228         device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
  229             sc->asic_rev, rt2560_get_rf(sc->rf_rev));
  230 
  231         /*
  232          * Allocate Tx and Rx rings.
  233          */
  234         error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT);
  235         if (error != 0) {
  236                 device_printf(sc->sc_dev, "could not allocate Tx ring\n");
  237                 goto fail1;
  238         }
  239 
  240         error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT);
  241         if (error != 0) {
  242                 device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
  243                 goto fail2;
  244         }
  245 
  246         error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT);
  247         if (error != 0) {
  248                 device_printf(sc->sc_dev, "could not allocate Prio ring\n");
  249                 goto fail3;
  250         }
  251 
  252         error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT);
  253         if (error != 0) {
  254                 device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
  255                 goto fail4;
  256         }
  257 
  258         error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT);
  259         if (error != 0) {
  260                 device_printf(sc->sc_dev, "could not allocate Rx ring\n");
  261                 goto fail5;
  262         }
  263 
  264         /* retrieve MAC address */
  265         rt2560_get_macaddr(sc, ic->ic_macaddr);
  266 
  267         ic->ic_softc = sc;
  268         ic->ic_name = device_get_nameunit(dev);
  269         ic->ic_opmode = IEEE80211_M_STA;
  270         ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
  271 
  272         /* set device capabilities */
  273         ic->ic_caps =
  274                   IEEE80211_C_STA               /* station mode */
  275                 | IEEE80211_C_IBSS              /* ibss, nee adhoc, mode */
  276                 | IEEE80211_C_HOSTAP            /* hostap mode */
  277                 | IEEE80211_C_MONITOR           /* monitor mode */
  278                 | IEEE80211_C_AHDEMO            /* adhoc demo mode */
  279                 | IEEE80211_C_WDS               /* 4-address traffic works */
  280                 | IEEE80211_C_MBSS              /* mesh point link mode */
  281                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
  282                 | IEEE80211_C_SHSLOT            /* short slot time supported */
  283                 | IEEE80211_C_WPA               /* capable of WPA1+WPA2 */
  284                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
  285 #ifdef notyet
  286                 | IEEE80211_C_TXFRAG            /* handle tx frags */
  287 #endif
  288                 ;
  289 
  290         rt2560_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
  291             ic->ic_channels);
  292 
  293         ieee80211_ifattach(ic);
  294         ic->ic_raw_xmit = rt2560_raw_xmit;
  295         ic->ic_updateslot = rt2560_update_slot;
  296         ic->ic_update_promisc = rt2560_update_promisc;
  297         ic->ic_scan_start = rt2560_scan_start;
  298         ic->ic_scan_end = rt2560_scan_end;
  299         ic->ic_getradiocaps = rt2560_getradiocaps;
  300         ic->ic_set_channel = rt2560_set_channel;
  301 
  302         ic->ic_vap_create = rt2560_vap_create;
  303         ic->ic_vap_delete = rt2560_vap_delete;
  304         ic->ic_parent = rt2560_parent;
  305         ic->ic_transmit = rt2560_transmit;
  306 
  307         ieee80211_radiotap_attach(ic,
  308             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
  309                 RT2560_TX_RADIOTAP_PRESENT,
  310             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
  311                 RT2560_RX_RADIOTAP_PRESENT);
  312 
  313         /*
  314          * Add a few sysctl knobs.
  315          */
  316 #ifdef RAL_DEBUG
  317         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  318             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  319             "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs");
  320 #endif
  321         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  322             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  323             "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
  324 
  325         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  326             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  327             "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
  328 
  329         if (bootverbose)
  330                 ieee80211_announce(ic);
  331 
  332         return 0;
  333 
  334 fail5:  rt2560_free_tx_ring(sc, &sc->bcnq);
  335 fail4:  rt2560_free_tx_ring(sc, &sc->prioq);
  336 fail3:  rt2560_free_tx_ring(sc, &sc->atimq);
  337 fail2:  rt2560_free_tx_ring(sc, &sc->txq);
  338 fail1:  mtx_destroy(&sc->sc_mtx);
  339 
  340         return ENXIO;
  341 }
  342 
  343 int
  344 rt2560_detach(void *xsc)
  345 {
  346         struct rt2560_softc *sc = xsc;
  347         struct ieee80211com *ic = &sc->sc_ic;
  348         
  349         rt2560_stop(sc);
  350 
  351         ieee80211_ifdetach(ic);
  352         mbufq_drain(&sc->sc_snd);
  353 
  354         rt2560_free_tx_ring(sc, &sc->txq);
  355         rt2560_free_tx_ring(sc, &sc->atimq);
  356         rt2560_free_tx_ring(sc, &sc->prioq);
  357         rt2560_free_tx_ring(sc, &sc->bcnq);
  358         rt2560_free_rx_ring(sc, &sc->rxq);
  359 
  360         mtx_destroy(&sc->sc_mtx);
  361 
  362         return 0;
  363 }
  364 
  365 static struct ieee80211vap *
  366 rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
  367     enum ieee80211_opmode opmode, int flags,
  368     const uint8_t bssid[IEEE80211_ADDR_LEN],
  369     const uint8_t mac[IEEE80211_ADDR_LEN])
  370 {
  371         struct rt2560_softc *sc = ic->ic_softc;
  372         struct rt2560_vap *rvp;
  373         struct ieee80211vap *vap;
  374 
  375         switch (opmode) {
  376         case IEEE80211_M_STA:
  377         case IEEE80211_M_IBSS:
  378         case IEEE80211_M_AHDEMO:
  379         case IEEE80211_M_MONITOR:
  380         case IEEE80211_M_HOSTAP:
  381         case IEEE80211_M_MBSS:
  382                 /* XXXRP: TBD */
  383                 if (!TAILQ_EMPTY(&ic->ic_vaps)) {
  384                         device_printf(sc->sc_dev, "only 1 vap supported\n");
  385                         return NULL;
  386                 }
  387                 if (opmode == IEEE80211_M_STA)
  388                         flags |= IEEE80211_CLONE_NOBEACONS;
  389                 break;
  390         case IEEE80211_M_WDS:
  391                 if (TAILQ_EMPTY(&ic->ic_vaps) ||
  392                     ic->ic_opmode != IEEE80211_M_HOSTAP) {
  393                         device_printf(sc->sc_dev,
  394                             "wds only supported in ap mode\n");
  395                         return NULL;
  396                 }
  397                 /*
  398                  * Silently remove any request for a unique
  399                  * bssid; WDS vap's always share the local
  400                  * mac address.
  401                  */
  402                 flags &= ~IEEE80211_CLONE_BSSID;
  403                 break;
  404         default:
  405                 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
  406                 return NULL;
  407         }
  408         rvp = malloc(sizeof(struct rt2560_vap), M_80211_VAP, M_WAITOK | M_ZERO);
  409         vap = &rvp->ral_vap;
  410         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
  411 
  412         /* override state transition machine */
  413         rvp->ral_newstate = vap->iv_newstate;
  414         vap->iv_newstate = rt2560_newstate;
  415         vap->iv_update_beacon = rt2560_beacon_update;
  416 
  417         ieee80211_ratectl_init(vap);
  418         /* complete setup */
  419         ieee80211_vap_attach(vap, ieee80211_media_change,
  420             ieee80211_media_status, mac);
  421         if (TAILQ_FIRST(&ic->ic_vaps) == vap)
  422                 ic->ic_opmode = opmode;
  423         return vap;
  424 }
  425 
  426 static void
  427 rt2560_vap_delete(struct ieee80211vap *vap)
  428 {
  429         struct rt2560_vap *rvp = RT2560_VAP(vap);
  430 
  431         ieee80211_ratectl_deinit(vap);
  432         ieee80211_vap_detach(vap);
  433         free(rvp, M_80211_VAP);
  434 }
  435 
  436 void
  437 rt2560_resume(void *xsc)
  438 {
  439         struct rt2560_softc *sc = xsc;
  440 
  441         if (sc->sc_ic.ic_nrunning > 0)
  442                 rt2560_init(sc);
  443 }
  444 
  445 static void
  446 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
  447 {
  448         if (error != 0)
  449                 return;
  450 
  451         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
  452 
  453         *(bus_addr_t *)arg = segs[0].ds_addr;
  454 }
  455 
  456 static int
  457 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
  458     int count)
  459 {
  460         int i, error;
  461 
  462         ring->count = count;
  463         ring->queued = 0;
  464         ring->cur = ring->next = 0;
  465         ring->cur_encrypt = ring->next_encrypt = 0;
  466 
  467         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 
  468             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
  469             count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE,
  470             0, NULL, NULL, &ring->desc_dmat);
  471         if (error != 0) {
  472                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
  473                 goto fail;
  474         }
  475 
  476         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
  477             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
  478         if (error != 0) {
  479                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
  480                 goto fail;
  481         }
  482 
  483         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
  484             count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
  485             0);
  486         if (error != 0) {
  487                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
  488                 goto fail;
  489         }
  490 
  491         ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
  492             M_NOWAIT | M_ZERO);
  493         if (ring->data == NULL) {
  494                 device_printf(sc->sc_dev, "could not allocate soft data\n");
  495                 error = ENOMEM;
  496                 goto fail;
  497         }
  498 
  499         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 
  500             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
  501             MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL,
  502             &ring->data_dmat);
  503         if (error != 0) {
  504                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
  505                 goto fail;
  506         }
  507 
  508         for (i = 0; i < count; i++) {
  509                 error = bus_dmamap_create(ring->data_dmat, 0,
  510                     &ring->data[i].map);
  511                 if (error != 0) {
  512                         device_printf(sc->sc_dev, "could not create DMA map\n");
  513                         goto fail;
  514                 }
  515         }
  516 
  517         return 0;
  518 
  519 fail:   rt2560_free_tx_ring(sc, ring);
  520         return error;
  521 }
  522 
  523 static void
  524 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
  525 {
  526         struct rt2560_tx_desc *desc;
  527         struct rt2560_tx_data *data;
  528         int i;
  529 
  530         for (i = 0; i < ring->count; i++) {
  531                 desc = &ring->desc[i];
  532                 data = &ring->data[i];
  533 
  534                 if (data->m != NULL) {
  535                         bus_dmamap_sync(ring->data_dmat, data->map,
  536                             BUS_DMASYNC_POSTWRITE);
  537                         bus_dmamap_unload(ring->data_dmat, data->map);
  538                         m_freem(data->m);
  539                         data->m = NULL;
  540                 }
  541 
  542                 if (data->ni != NULL) {
  543                         ieee80211_free_node(data->ni);
  544                         data->ni = NULL;
  545                 }
  546 
  547                 desc->flags = 0;
  548         }
  549 
  550         bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
  551 
  552         ring->queued = 0;
  553         ring->cur = ring->next = 0;
  554         ring->cur_encrypt = ring->next_encrypt = 0;
  555 }
  556 
  557 static void
  558 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
  559 {
  560         struct rt2560_tx_data *data;
  561         int i;
  562 
  563         if (ring->desc != NULL) {
  564                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
  565                     BUS_DMASYNC_POSTWRITE);
  566                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
  567                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
  568         }
  569 
  570         if (ring->desc_dmat != NULL)
  571                 bus_dma_tag_destroy(ring->desc_dmat);
  572 
  573         if (ring->data != NULL) {
  574                 for (i = 0; i < ring->count; i++) {
  575                         data = &ring->data[i];
  576 
  577                         if (data->m != NULL) {
  578                                 bus_dmamap_sync(ring->data_dmat, data->map,
  579                                     BUS_DMASYNC_POSTWRITE);
  580                                 bus_dmamap_unload(ring->data_dmat, data->map);
  581                                 m_freem(data->m);
  582                         }
  583 
  584                         if (data->ni != NULL)
  585                                 ieee80211_free_node(data->ni);
  586 
  587                         if (data->map != NULL)
  588                                 bus_dmamap_destroy(ring->data_dmat, data->map);
  589                 }
  590 
  591                 free(ring->data, M_DEVBUF);
  592         }
  593 
  594         if (ring->data_dmat != NULL)
  595                 bus_dma_tag_destroy(ring->data_dmat);
  596 }
  597 
  598 static int
  599 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
  600     int count)
  601 {
  602         struct rt2560_rx_desc *desc;
  603         struct rt2560_rx_data *data;
  604         bus_addr_t physaddr;
  605         int i, error;
  606 
  607         ring->count = count;
  608         ring->cur = ring->next = 0;
  609         ring->cur_decrypt = 0;
  610 
  611         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 
  612             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
  613             count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
  614             0, NULL, NULL, &ring->desc_dmat);
  615         if (error != 0) {
  616                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
  617                 goto fail;
  618         }
  619 
  620         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
  621             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
  622         if (error != 0) {
  623                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
  624                 goto fail;
  625         }
  626 
  627         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
  628             count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
  629             0);
  630         if (error != 0) {
  631                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
  632                 goto fail;
  633         }
  634 
  635         ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
  636             M_NOWAIT | M_ZERO);
  637         if (ring->data == NULL) {
  638                 device_printf(sc->sc_dev, "could not allocate soft data\n");
  639                 error = ENOMEM;
  640                 goto fail;
  641         }
  642 
  643         /*
  644          * Pre-allocate Rx buffers and populate Rx ring.
  645          */
  646         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 
  647             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
  648             1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
  649         if (error != 0) {
  650                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
  651                 goto fail;
  652         }
  653 
  654         for (i = 0; i < count; i++) {
  655                 desc = &sc->rxq.desc[i];
  656                 data = &sc->rxq.data[i];
  657 
  658                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
  659                 if (error != 0) {
  660                         device_printf(sc->sc_dev, "could not create DMA map\n");
  661                         goto fail;
  662                 }
  663 
  664                 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
  665                 if (data->m == NULL) {
  666                         device_printf(sc->sc_dev,
  667                             "could not allocate rx mbuf\n");
  668                         error = ENOMEM;
  669                         goto fail;
  670                 }
  671 
  672                 error = bus_dmamap_load(ring->data_dmat, data->map,
  673                     mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
  674                     &physaddr, 0);
  675                 if (error != 0) {
  676                         device_printf(sc->sc_dev,
  677                             "could not load rx buf DMA map");
  678                         goto fail;
  679                 }
  680 
  681                 desc->flags = htole32(RT2560_RX_BUSY);
  682                 desc->physaddr = htole32(physaddr);
  683         }
  684 
  685         bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
  686 
  687         return 0;
  688 
  689 fail:   rt2560_free_rx_ring(sc, ring);
  690         return error;
  691 }
  692 
  693 static void
  694 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
  695 {
  696         int i;
  697 
  698         for (i = 0; i < ring->count; i++) {
  699                 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
  700                 ring->data[i].drop = 0;
  701         }
  702 
  703         bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
  704 
  705         ring->cur = ring->next = 0;
  706         ring->cur_decrypt = 0;
  707 }
  708 
  709 static void
  710 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
  711 {
  712         struct rt2560_rx_data *data;
  713         int i;
  714 
  715         if (ring->desc != NULL) {
  716                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
  717                     BUS_DMASYNC_POSTWRITE);
  718                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
  719                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
  720         }
  721 
  722         if (ring->desc_dmat != NULL)
  723                 bus_dma_tag_destroy(ring->desc_dmat);
  724 
  725         if (ring->data != NULL) {
  726                 for (i = 0; i < ring->count; i++) {
  727                         data = &ring->data[i];
  728 
  729                         if (data->m != NULL) {
  730                                 bus_dmamap_sync(ring->data_dmat, data->map,
  731                                     BUS_DMASYNC_POSTREAD);
  732                                 bus_dmamap_unload(ring->data_dmat, data->map);
  733                                 m_freem(data->m);
  734                         }
  735 
  736                         if (data->map != NULL)
  737                                 bus_dmamap_destroy(ring->data_dmat, data->map);
  738                 }
  739 
  740                 free(ring->data, M_DEVBUF);
  741         }
  742 
  743         if (ring->data_dmat != NULL)
  744                 bus_dma_tag_destroy(ring->data_dmat);
  745 }
  746 
  747 static int
  748 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
  749 {
  750         struct rt2560_vap *rvp = RT2560_VAP(vap);
  751         struct rt2560_softc *sc = vap->iv_ic->ic_softc;
  752         int error;
  753 
  754         if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) {
  755                 /* abort TSF synchronization */
  756                 RAL_WRITE(sc, RT2560_CSR14, 0);
  757 
  758                 /* turn association led off */
  759                 rt2560_update_led(sc, 0, 0);
  760         }
  761 
  762         error = rvp->ral_newstate(vap, nstate, arg);
  763 
  764         if (error == 0 && nstate == IEEE80211_S_RUN) {
  765                 struct ieee80211_node *ni = vap->iv_bss;
  766                 struct mbuf *m;
  767 
  768                 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
  769                         rt2560_update_plcp(sc);
  770                         rt2560_set_basicrates(sc, &ni->ni_rates);
  771                         rt2560_set_bssid(sc, ni->ni_bssid);
  772                 }
  773 
  774                 if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
  775                     vap->iv_opmode == IEEE80211_M_IBSS ||
  776                     vap->iv_opmode == IEEE80211_M_MBSS) {
  777                         m = ieee80211_beacon_alloc(ni);
  778                         if (m == NULL) {
  779                                 device_printf(sc->sc_dev,
  780                                     "could not allocate beacon\n");
  781                                 return ENOBUFS;
  782                         }
  783                         ieee80211_ref_node(ni);
  784                         error = rt2560_tx_bcn(sc, m, ni);
  785                         if (error != 0)
  786                                 return error;
  787                 }
  788 
  789                 /* turn association led on */
  790                 rt2560_update_led(sc, 1, 0);
  791 
  792                 if (vap->iv_opmode != IEEE80211_M_MONITOR)
  793                         rt2560_enable_tsf_sync(sc);
  794                 else
  795                         rt2560_enable_tsf(sc);
  796         }
  797         return error;
  798 }
  799 
  800 /*
  801  * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
  802  * 93C66).
  803  */
  804 static uint16_t
  805 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
  806 {
  807         uint32_t tmp;
  808         uint16_t val;
  809         int n;
  810 
  811         /* clock C once before the first command */
  812         RT2560_EEPROM_CTL(sc, 0);
  813 
  814         RT2560_EEPROM_CTL(sc, RT2560_S);
  815         RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
  816         RT2560_EEPROM_CTL(sc, RT2560_S);
  817 
  818         /* write start bit (1) */
  819         RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
  820         RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
  821 
  822         /* write READ opcode (10) */
  823         RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
  824         RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
  825         RT2560_EEPROM_CTL(sc, RT2560_S);
  826         RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
  827 
  828         /* write address (A5-A0 or A7-A0) */
  829         n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
  830         for (; n >= 0; n--) {
  831                 RT2560_EEPROM_CTL(sc, RT2560_S |
  832                     (((addr >> n) & 1) << RT2560_SHIFT_D));
  833                 RT2560_EEPROM_CTL(sc, RT2560_S |
  834                     (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
  835         }
  836 
  837         RT2560_EEPROM_CTL(sc, RT2560_S);
  838 
  839         /* read data Q15-Q0 */
  840         val = 0;
  841         for (n = 15; n >= 0; n--) {
  842                 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
  843                 tmp = RAL_READ(sc, RT2560_CSR21);
  844                 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
  845                 RT2560_EEPROM_CTL(sc, RT2560_S);
  846         }
  847 
  848         RT2560_EEPROM_CTL(sc, 0);
  849 
  850         /* clear Chip Select and clock C */
  851         RT2560_EEPROM_CTL(sc, RT2560_S);
  852         RT2560_EEPROM_CTL(sc, 0);
  853         RT2560_EEPROM_CTL(sc, RT2560_C);
  854 
  855         return val;
  856 }
  857 
  858 /*
  859  * Some frames were processed by the hardware cipher engine and are ready for
  860  * transmission.
  861  */
  862 static void
  863 rt2560_encryption_intr(struct rt2560_softc *sc)
  864 {
  865         struct rt2560_tx_desc *desc;
  866         int hw;
  867 
  868         /* retrieve last descriptor index processed by cipher engine */
  869         hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
  870         hw /= RT2560_TX_DESC_SIZE;
  871 
  872         bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
  873             BUS_DMASYNC_POSTREAD);
  874 
  875         while (sc->txq.next_encrypt != hw) {
  876                 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) {
  877                         printf("hw encrypt %d, cur_encrypt %d\n", hw,
  878                             sc->txq.cur_encrypt);
  879                         break;
  880                 }
  881 
  882                 desc = &sc->txq.desc[sc->txq.next_encrypt];
  883 
  884                 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
  885                     (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
  886                         break;
  887 
  888                 /* for TKIP, swap eiv field to fix a bug in ASIC */
  889                 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
  890                     RT2560_TX_CIPHER_TKIP)
  891                         desc->eiv = bswap32(desc->eiv);
  892 
  893                 /* mark the frame ready for transmission */
  894                 desc->flags |= htole32(RT2560_TX_VALID);
  895                 desc->flags |= htole32(RT2560_TX_BUSY);
  896 
  897                 DPRINTFN(sc, 15, "encryption done idx=%u\n",
  898                     sc->txq.next_encrypt);
  899 
  900                 sc->txq.next_encrypt =
  901                     (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
  902         }
  903 
  904         bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
  905             BUS_DMASYNC_PREWRITE);
  906 
  907         /* kick Tx */
  908         RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
  909 }
  910 
  911 static void
  912 rt2560_tx_intr(struct rt2560_softc *sc)
  913 {
  914         struct rt2560_tx_desc *desc;
  915         struct rt2560_tx_data *data;
  916         struct mbuf *m;
  917         struct ieee80211vap *vap;
  918         struct ieee80211_node *ni;
  919         uint32_t flags;
  920         int retrycnt, status;
  921 
  922         bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
  923             BUS_DMASYNC_POSTREAD);
  924 
  925         for (;;) {
  926                 desc = &sc->txq.desc[sc->txq.next];
  927                 data = &sc->txq.data[sc->txq.next];
  928 
  929                 flags = le32toh(desc->flags);
  930                 if ((flags & RT2560_TX_BUSY) ||
  931                     (flags & RT2560_TX_CIPHER_BUSY) ||
  932                     !(flags & RT2560_TX_VALID))
  933                         break;
  934 
  935                 m = data->m;
  936                 ni = data->ni;
  937                 vap = ni->ni_vap;
  938 
  939                 switch (flags & RT2560_TX_RESULT_MASK) {
  940                 case RT2560_TX_SUCCESS:
  941                         retrycnt = 0;
  942 
  943                         DPRINTFN(sc, 10, "%s\n", "data frame sent successfully");
  944                         if (data->rix != IEEE80211_FIXED_RATE_NONE)
  945                                 ieee80211_ratectl_tx_complete(vap, ni,
  946                                     IEEE80211_RATECTL_TX_SUCCESS,
  947                                     &retrycnt, NULL);
  948                         status = 0;
  949                         break;
  950 
  951                 case RT2560_TX_SUCCESS_RETRY:
  952                         retrycnt = RT2560_TX_RETRYCNT(flags);
  953 
  954                         DPRINTFN(sc, 9, "data frame sent after %u retries\n",
  955                             retrycnt);
  956                         if (data->rix != IEEE80211_FIXED_RATE_NONE)
  957                                 ieee80211_ratectl_tx_complete(vap, ni,
  958                                     IEEE80211_RATECTL_TX_SUCCESS,
  959                                     &retrycnt, NULL);
  960                         status = 0;
  961                         break;
  962 
  963                 case RT2560_TX_FAIL_RETRY:
  964                         retrycnt = RT2560_TX_RETRYCNT(flags);
  965 
  966                         DPRINTFN(sc, 9, "data frame failed after %d retries\n",
  967                             retrycnt);
  968                         if (data->rix != IEEE80211_FIXED_RATE_NONE)
  969                                 ieee80211_ratectl_tx_complete(vap, ni,
  970                                     IEEE80211_RATECTL_TX_FAILURE,
  971                                     &retrycnt, NULL);
  972                         status = 1;
  973                         break;
  974 
  975                 case RT2560_TX_FAIL_INVALID:
  976                 case RT2560_TX_FAIL_OTHER:
  977                 default:
  978                         device_printf(sc->sc_dev, "sending data frame failed "
  979                             "0x%08x\n", flags);
  980                         status = 1;
  981                 }
  982 
  983                 bus_dmamap_sync(sc->txq.data_dmat, data->map,
  984                     BUS_DMASYNC_POSTWRITE);
  985                 bus_dmamap_unload(sc->txq.data_dmat, data->map);
  986 
  987                 ieee80211_tx_complete(ni, m, status);
  988                 data->ni = NULL;
  989                 data->m = NULL;
  990 
  991                 /* descriptor is no longer valid */
  992                 desc->flags &= ~htole32(RT2560_TX_VALID);
  993 
  994                 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next);
  995 
  996                 sc->txq.queued--;
  997                 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
  998         }
  999 
 1000         bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
 1001             BUS_DMASYNC_PREWRITE);
 1002 
 1003         if (sc->prioq.queued == 0 && sc->txq.queued == 0)
 1004                 sc->sc_tx_timer = 0;
 1005 
 1006         if (sc->txq.queued < RT2560_TX_RING_COUNT - 1)
 1007                 rt2560_start(sc);
 1008 }
 1009 
 1010 static void
 1011 rt2560_prio_intr(struct rt2560_softc *sc)
 1012 {
 1013         struct rt2560_tx_desc *desc;
 1014         struct rt2560_tx_data *data;
 1015         struct ieee80211_node *ni;
 1016         struct mbuf *m;
 1017         int flags;
 1018 
 1019         bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
 1020             BUS_DMASYNC_POSTREAD);
 1021 
 1022         for (;;) {
 1023                 desc = &sc->prioq.desc[sc->prioq.next];
 1024                 data = &sc->prioq.data[sc->prioq.next];
 1025 
 1026                 flags = le32toh(desc->flags);
 1027                 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0)
 1028                         break;
 1029 
 1030                 switch (flags & RT2560_TX_RESULT_MASK) {
 1031                 case RT2560_TX_SUCCESS:
 1032                         DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully");
 1033                         break;
 1034 
 1035                 case RT2560_TX_SUCCESS_RETRY:
 1036                         DPRINTFN(sc, 9, "mgt frame sent after %u retries\n",
 1037                             (flags >> 5) & 0x7);
 1038                         break;
 1039 
 1040                 case RT2560_TX_FAIL_RETRY:
 1041                         DPRINTFN(sc, 9, "%s\n",
 1042                             "sending mgt frame failed (too much retries)");
 1043                         break;
 1044 
 1045                 case RT2560_TX_FAIL_INVALID:
 1046                 case RT2560_TX_FAIL_OTHER:
 1047                 default:
 1048                         device_printf(sc->sc_dev, "sending mgt frame failed "
 1049                             "0x%08x\n", flags);
 1050                         break;
 1051                 }
 1052 
 1053                 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
 1054                     BUS_DMASYNC_POSTWRITE);
 1055                 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
 1056 
 1057                 m = data->m;
 1058                 data->m = NULL;
 1059                 ni = data->ni;
 1060                 data->ni = NULL;
 1061 
 1062                 /* descriptor is no longer valid */
 1063                 desc->flags &= ~htole32(RT2560_TX_VALID);
 1064 
 1065                 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next);
 1066 
 1067                 sc->prioq.queued--;
 1068                 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
 1069 
 1070                 if (m->m_flags & M_TXCB)
 1071                         ieee80211_process_callback(ni, m,
 1072                                 (flags & RT2560_TX_RESULT_MASK) &~
 1073                                 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY));
 1074                 m_freem(m);
 1075                 ieee80211_free_node(ni);
 1076         }
 1077 
 1078         bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
 1079             BUS_DMASYNC_PREWRITE);
 1080 
 1081         if (sc->prioq.queued == 0 && sc->txq.queued == 0)
 1082                 sc->sc_tx_timer = 0;
 1083 
 1084         if (sc->prioq.queued < RT2560_PRIO_RING_COUNT)
 1085                 rt2560_start(sc);
 1086 }
 1087 
 1088 /*
 1089  * Some frames were processed by the hardware cipher engine and are ready for
 1090  * handoff to the IEEE802.11 layer.
 1091  */
 1092 static void
 1093 rt2560_decryption_intr(struct rt2560_softc *sc)
 1094 {
 1095         struct ieee80211com *ic = &sc->sc_ic;
 1096         struct rt2560_rx_desc *desc;
 1097         struct rt2560_rx_data *data;
 1098         bus_addr_t physaddr;
 1099         struct ieee80211_frame *wh;
 1100         struct ieee80211_node *ni;
 1101         struct mbuf *mnew, *m;
 1102         int hw, error;
 1103         int8_t rssi, nf;
 1104 
 1105         /* retrieve last descriptor index processed by cipher engine */
 1106         hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
 1107         hw /= RT2560_RX_DESC_SIZE;
 1108 
 1109         bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
 1110             BUS_DMASYNC_POSTREAD);
 1111 
 1112         for (; sc->rxq.cur_decrypt != hw;) {
 1113                 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
 1114                 data = &sc->rxq.data[sc->rxq.cur_decrypt];
 1115 
 1116                 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
 1117                     (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
 1118                         break;
 1119 
 1120                 if (data->drop) {
 1121                         counter_u64_add(ic->ic_ierrors, 1);
 1122                         goto skip;
 1123                 }
 1124 
 1125                 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
 1126                     (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
 1127                         counter_u64_add(ic->ic_ierrors, 1);
 1128                         goto skip;
 1129                 }
 1130 
 1131                 /*
 1132                  * Try to allocate a new mbuf for this ring element and load it
 1133                  * before processing the current mbuf. If the ring element
 1134                  * cannot be loaded, drop the received packet and reuse the old
 1135                  * mbuf. In the unlikely case that the old mbuf can't be
 1136                  * reloaded either, explicitly panic.
 1137                  */
 1138                 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 1139                 if (mnew == NULL) {
 1140                         counter_u64_add(ic->ic_ierrors, 1);
 1141                         goto skip;
 1142                 }
 1143 
 1144                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
 1145                     BUS_DMASYNC_POSTREAD);
 1146                 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
 1147 
 1148                 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
 1149                     mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
 1150                     &physaddr, 0);
 1151                 if (error != 0) {
 1152                         m_freem(mnew);
 1153 
 1154                         /* try to reload the old mbuf */
 1155                         error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
 1156                             mtod(data->m, void *), MCLBYTES,
 1157                             rt2560_dma_map_addr, &physaddr, 0);
 1158                         if (error != 0) {
 1159                                 /* very unlikely that it will fail... */
 1160                                 panic("%s: could not load old rx mbuf",
 1161                                     device_get_name(sc->sc_dev));
 1162                         }
 1163                         counter_u64_add(ic->ic_ierrors, 1);
 1164                         goto skip;
 1165                 }
 1166 
 1167                 /*
 1168                  * New mbuf successfully loaded, update Rx ring and continue
 1169                  * processing.
 1170                  */
 1171                 m = data->m;
 1172                 data->m = mnew;
 1173                 desc->physaddr = htole32(physaddr);
 1174 
 1175                 /* finalize mbuf */
 1176                 m->m_pkthdr.len = m->m_len =
 1177                     (le32toh(desc->flags) >> 16) & 0xfff;
 1178 
 1179                 rssi = RT2560_RSSI(sc, desc->rssi);
 1180                 nf = RT2560_NOISE_FLOOR;
 1181                 if (ieee80211_radiotap_active(ic)) {
 1182                         struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
 1183                         uint32_t tsf_lo, tsf_hi;
 1184 
 1185                         /* get timestamp (low and high 32 bits) */
 1186                         tsf_hi = RAL_READ(sc, RT2560_CSR17);
 1187                         tsf_lo = RAL_READ(sc, RT2560_CSR16);
 1188 
 1189                         tap->wr_tsf =
 1190                             htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
 1191                         tap->wr_flags = 0;
 1192                         tap->wr_rate = ieee80211_plcp2rate(desc->rate,
 1193                             (desc->flags & htole32(RT2560_RX_OFDM)) ?
 1194                                 IEEE80211_T_OFDM : IEEE80211_T_CCK);
 1195                         tap->wr_antenna = sc->rx_ant;
 1196                         tap->wr_antsignal = nf + rssi;
 1197                         tap->wr_antnoise = nf;
 1198                 }
 1199 
 1200                 sc->sc_flags |= RT2560_F_INPUT_RUNNING;
 1201                 RAL_UNLOCK(sc);
 1202                 wh = mtod(m, struct ieee80211_frame *);
 1203                 ni = ieee80211_find_rxnode(ic,
 1204                     (struct ieee80211_frame_min *)wh);
 1205                 if (ni != NULL) {
 1206                         (void) ieee80211_input(ni, m, rssi, nf);
 1207                         ieee80211_free_node(ni);
 1208                 } else
 1209                         (void) ieee80211_input_all(ic, m, rssi, nf);
 1210 
 1211                 RAL_LOCK(sc);
 1212                 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING;
 1213 skip:           desc->flags = htole32(RT2560_RX_BUSY);
 1214 
 1215                 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt);
 1216 
 1217                 sc->rxq.cur_decrypt =
 1218                     (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
 1219         }
 1220 
 1221         bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
 1222             BUS_DMASYNC_PREWRITE);
 1223 }
 1224 
 1225 /*
 1226  * Some frames were received. Pass them to the hardware cipher engine before
 1227  * sending them to the 802.11 layer.
 1228  */
 1229 static void
 1230 rt2560_rx_intr(struct rt2560_softc *sc)
 1231 {
 1232         struct rt2560_rx_desc *desc;
 1233         struct rt2560_rx_data *data;
 1234 
 1235         bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
 1236             BUS_DMASYNC_POSTREAD);
 1237 
 1238         for (;;) {
 1239                 desc = &sc->rxq.desc[sc->rxq.cur];
 1240                 data = &sc->rxq.data[sc->rxq.cur];
 1241 
 1242                 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
 1243                     (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
 1244                         break;
 1245 
 1246                 data->drop = 0;
 1247 
 1248                 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
 1249                     (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
 1250                         /*
 1251                          * This should not happen since we did not request
 1252                          * to receive those frames when we filled RXCSR0.
 1253                          */
 1254                         DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n",
 1255                             le32toh(desc->flags));
 1256                         data->drop = 1;
 1257                 }
 1258 
 1259                 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
 1260                         DPRINTFN(sc, 5, "%s\n", "bad length");
 1261                         data->drop = 1;
 1262                 }
 1263 
 1264                 /* mark the frame for decryption */
 1265                 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
 1266 
 1267                 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur);
 1268 
 1269                 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
 1270         }
 1271 
 1272         bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
 1273             BUS_DMASYNC_PREWRITE);
 1274 
 1275         /* kick decrypt */
 1276         RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
 1277 }
 1278 
 1279 static void
 1280 rt2560_beacon_update(struct ieee80211vap *vap, int item)
 1281 {
 1282         struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off;
 1283 
 1284         setbit(bo->bo_flags, item);
 1285 }
 1286 
 1287 /*
 1288  * This function is called periodically in IBSS mode when a new beacon must be
 1289  * sent out.
 1290  */
 1291 static void
 1292 rt2560_beacon_expire(struct rt2560_softc *sc)
 1293 {
 1294         struct ieee80211com *ic = &sc->sc_ic;
 1295         struct rt2560_tx_data *data;
 1296 
 1297         if (ic->ic_opmode != IEEE80211_M_IBSS &&
 1298             ic->ic_opmode != IEEE80211_M_HOSTAP &&
 1299             ic->ic_opmode != IEEE80211_M_MBSS)
 1300                 return; 
 1301 
 1302         data = &sc->bcnq.data[sc->bcnq.next];
 1303         /*
 1304          * Don't send beacon if bsschan isn't set
 1305          */
 1306         if (data->ni == NULL)
 1307                 return;
 1308 
 1309         bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
 1310         bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
 1311 
 1312         /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */
 1313         ieee80211_beacon_update(data->ni, data->m, 1);
 1314 
 1315         rt2560_tx_bcn(sc, data->m, data->ni);
 1316 
 1317         DPRINTFN(sc, 15, "%s", "beacon expired\n");
 1318 
 1319         sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
 1320 }
 1321 
 1322 /* ARGSUSED */
 1323 static void
 1324 rt2560_wakeup_expire(struct rt2560_softc *sc)
 1325 {
 1326         DPRINTFN(sc, 2, "%s", "wakeup expired\n");
 1327 }
 1328 
 1329 void
 1330 rt2560_intr(void *arg)
 1331 {
 1332         struct rt2560_softc *sc = arg;
 1333         uint32_t r;
 1334 
 1335         RAL_LOCK(sc);
 1336 
 1337         /* disable interrupts */
 1338         RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
 1339 
 1340         /* don't re-enable interrupts if we're shutting down */
 1341         if (!(sc->sc_flags & RT2560_F_RUNNING)) {
 1342                 RAL_UNLOCK(sc);
 1343                 return;
 1344         }
 1345 
 1346         r = RAL_READ(sc, RT2560_CSR7);
 1347         RAL_WRITE(sc, RT2560_CSR7, r);
 1348 
 1349         if (r & RT2560_BEACON_EXPIRE)
 1350                 rt2560_beacon_expire(sc);
 1351 
 1352         if (r & RT2560_WAKEUP_EXPIRE)
 1353                 rt2560_wakeup_expire(sc);
 1354 
 1355         if (r & RT2560_ENCRYPTION_DONE)
 1356                 rt2560_encryption_intr(sc);
 1357 
 1358         if (r & RT2560_TX_DONE)
 1359                 rt2560_tx_intr(sc);
 1360 
 1361         if (r & RT2560_PRIO_DONE)
 1362                 rt2560_prio_intr(sc);
 1363 
 1364         if (r & RT2560_DECRYPTION_DONE)
 1365                 rt2560_decryption_intr(sc);
 1366 
 1367         if (r & RT2560_RX_DONE) {
 1368                 rt2560_rx_intr(sc);
 1369                 rt2560_encryption_intr(sc);
 1370         }
 1371 
 1372         /* re-enable interrupts */
 1373         RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
 1374 
 1375         RAL_UNLOCK(sc);
 1376 }
 1377 
 1378 #define RAL_SIFS                10      /* us */
 1379 
 1380 #define RT2560_TXRX_TURNAROUND  10      /* us */
 1381 
 1382 static uint8_t
 1383 rt2560_plcp_signal(int rate)
 1384 {
 1385         switch (rate) {
 1386         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
 1387         case 12:        return 0xb;
 1388         case 18:        return 0xf;
 1389         case 24:        return 0xa;
 1390         case 36:        return 0xe;
 1391         case 48:        return 0x9;
 1392         case 72:        return 0xd;
 1393         case 96:        return 0x8;
 1394         case 108:       return 0xc;
 1395 
 1396         /* CCK rates (NB: not IEEE std, device-specific) */
 1397         case 2:         return 0x0;
 1398         case 4:         return 0x1;
 1399         case 11:        return 0x2;
 1400         case 22:        return 0x3;
 1401         }
 1402         return 0xff;            /* XXX unsupported/unknown rate */
 1403 }
 1404 
 1405 static void
 1406 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
 1407     uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
 1408 {
 1409         struct ieee80211com *ic = &sc->sc_ic;
 1410         uint16_t plcp_length;
 1411         int remainder;
 1412 
 1413         desc->flags = htole32(flags);
 1414         desc->flags |= htole32(len << 16);
 1415 
 1416         desc->physaddr = htole32(physaddr);
 1417         desc->wme = htole16(
 1418             RT2560_AIFSN(2) |
 1419             RT2560_LOGCWMIN(3) |
 1420             RT2560_LOGCWMAX(8));
 1421 
 1422         /* setup PLCP fields */
 1423         desc->plcp_signal  = rt2560_plcp_signal(rate);
 1424         desc->plcp_service = 4;
 1425 
 1426         len += IEEE80211_CRC_LEN;
 1427         if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) {
 1428                 desc->flags |= htole32(RT2560_TX_OFDM);
 1429 
 1430                 plcp_length = len & 0xfff;
 1431                 desc->plcp_length_hi = plcp_length >> 6;
 1432                 desc->plcp_length_lo = plcp_length & 0x3f;
 1433         } else {
 1434                 plcp_length = howmany(16 * len, rate);
 1435                 if (rate == 22) {
 1436                         remainder = (16 * len) % 22;
 1437                         if (remainder != 0 && remainder < 7)
 1438                                 desc->plcp_service |= RT2560_PLCP_LENGEXT;
 1439                 }
 1440                 desc->plcp_length_hi = plcp_length >> 8;
 1441                 desc->plcp_length_lo = plcp_length & 0xff;
 1442 
 1443                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
 1444                         desc->plcp_signal |= 0x08;
 1445         }
 1446 
 1447         if (!encrypt)
 1448                 desc->flags |= htole32(RT2560_TX_VALID);
 1449         desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY)
 1450                                : htole32(RT2560_TX_BUSY);
 1451 }
 1452 
 1453 static int
 1454 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
 1455     struct ieee80211_node *ni)
 1456 {
 1457         struct ieee80211vap *vap = ni->ni_vap;
 1458         struct rt2560_tx_desc *desc;
 1459         struct rt2560_tx_data *data;
 1460         bus_dma_segment_t segs[RT2560_MAX_SCATTER];
 1461         int nsegs, rate, error;
 1462 
 1463         desc = &sc->bcnq.desc[sc->bcnq.cur];
 1464         data = &sc->bcnq.data[sc->bcnq.cur];
 1465 
 1466         /* XXX maybe a separate beacon rate? */
 1467         rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate;
 1468 
 1469         error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
 1470             segs, &nsegs, BUS_DMA_NOWAIT);
 1471         if (error != 0) {
 1472                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
 1473                     error);
 1474                 m_freem(m0);
 1475                 return error;
 1476         }
 1477 
 1478         if (ieee80211_radiotap_active_vap(vap)) {
 1479                 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
 1480 
 1481                 tap->wt_flags = 0;
 1482                 tap->wt_rate = rate;
 1483                 tap->wt_antenna = sc->tx_ant;
 1484 
 1485                 ieee80211_radiotap_tx(vap, m0);
 1486         }
 1487 
 1488         data->m = m0;
 1489         data->ni = ni;
 1490 
 1491         rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
 1492             RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
 1493 
 1494         DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n",
 1495             m0->m_pkthdr.len, sc->bcnq.cur, rate);
 1496 
 1497         bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
 1498         bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
 1499             BUS_DMASYNC_PREWRITE);
 1500 
 1501         sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
 1502 
 1503         return 0;
 1504 }
 1505 
 1506 static int
 1507 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
 1508     struct ieee80211_node *ni)
 1509 {
 1510         struct ieee80211vap *vap = ni->ni_vap;
 1511         struct ieee80211com *ic = ni->ni_ic;
 1512         struct rt2560_tx_desc *desc;
 1513         struct rt2560_tx_data *data;
 1514         struct ieee80211_frame *wh;
 1515         struct ieee80211_key *k;
 1516         bus_dma_segment_t segs[RT2560_MAX_SCATTER];
 1517         uint16_t dur;
 1518         uint32_t flags = 0;
 1519         int nsegs, rate, error;
 1520 
 1521         desc = &sc->prioq.desc[sc->prioq.cur];
 1522         data = &sc->prioq.data[sc->prioq.cur];
 1523 
 1524         rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate;
 1525 
 1526         wh = mtod(m0, struct ieee80211_frame *);
 1527 
 1528         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
 1529                 k = ieee80211_crypto_encap(ni, m0);
 1530                 if (k == NULL) {
 1531                         m_freem(m0);
 1532                         return ENOBUFS;
 1533                 }
 1534         }
 1535 
 1536         error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
 1537             segs, &nsegs, 0);
 1538         if (error != 0) {
 1539                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
 1540                     error);
 1541                 m_freem(m0);
 1542                 return error;
 1543         }
 1544 
 1545         if (ieee80211_radiotap_active_vap(vap)) {
 1546                 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
 1547 
 1548                 tap->wt_flags = 0;
 1549                 tap->wt_rate = rate;
 1550                 tap->wt_antenna = sc->tx_ant;
 1551 
 1552                 ieee80211_radiotap_tx(vap, m0);
 1553         }
 1554 
 1555         data->m = m0;
 1556         data->ni = ni;
 1557         /* management frames are not taken into account for amrr */
 1558         data->rix = IEEE80211_FIXED_RATE_NONE;
 1559 
 1560         wh = mtod(m0, struct ieee80211_frame *);
 1561 
 1562         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 1563                 flags |= RT2560_TX_ACK;
 1564 
 1565                 dur = ieee80211_ack_duration(ic->ic_rt,
 1566                     rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
 1567                 *(uint16_t *)wh->i_dur = htole16(dur);
 1568 
 1569                 /* tell hardware to add timestamp for probe responses */
 1570                 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
 1571                     IEEE80211_FC0_TYPE_MGT &&
 1572                     (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
 1573                     IEEE80211_FC0_SUBTYPE_PROBE_RESP)
 1574                         flags |= RT2560_TX_TIMESTAMP;
 1575         }
 1576 
 1577         rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
 1578             segs->ds_addr);
 1579 
 1580         bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
 1581         bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
 1582             BUS_DMASYNC_PREWRITE);
 1583 
 1584         DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n",
 1585             m0->m_pkthdr.len, sc->prioq.cur, rate);
 1586 
 1587         /* kick prio */
 1588         sc->prioq.queued++;
 1589         sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
 1590         RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
 1591 
 1592         return 0;
 1593 }
 1594 
 1595 static int
 1596 rt2560_sendprot(struct rt2560_softc *sc,
 1597     const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
 1598 {
 1599         struct ieee80211com *ic = ni->ni_ic;
 1600         const struct ieee80211_frame *wh;
 1601         struct rt2560_tx_desc *desc;
 1602         struct rt2560_tx_data *data;
 1603         struct mbuf *mprot;
 1604         int protrate, ackrate, pktlen, flags, isshort, error;
 1605         uint16_t dur;
 1606         bus_dma_segment_t segs[RT2560_MAX_SCATTER];
 1607         int nsegs;
 1608 
 1609         KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY,
 1610             ("protection %d", prot));
 1611 
 1612         wh = mtod(m, const struct ieee80211_frame *);
 1613         pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
 1614 
 1615         protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
 1616         ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
 1617 
 1618         isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
 1619         dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
 1620             + ieee80211_ack_duration(ic->ic_rt, rate, isshort);
 1621         flags = RT2560_TX_MORE_FRAG;
 1622         if (prot == IEEE80211_PROT_RTSCTS) {
 1623                 /* NB: CTS is the same size as an ACK */
 1624                 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
 1625                 flags |= RT2560_TX_ACK;
 1626                 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
 1627         } else {
 1628                 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
 1629         }
 1630         if (mprot == NULL) {
 1631                 /* XXX stat + msg */
 1632                 return ENOBUFS;
 1633         }
 1634 
 1635         desc = &sc->txq.desc[sc->txq.cur_encrypt];
 1636         data = &sc->txq.data[sc->txq.cur_encrypt];
 1637 
 1638         error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
 1639             mprot, segs, &nsegs, 0);
 1640         if (error != 0) {
 1641                 device_printf(sc->sc_dev,
 1642                     "could not map mbuf (error %d)\n", error);
 1643                 m_freem(mprot);
 1644                 return error;
 1645         }
 1646 
 1647         data->m = mprot;
 1648         data->ni = ieee80211_ref_node(ni);
 1649         /* ctl frames are not taken into account for amrr */
 1650         data->rix = IEEE80211_FIXED_RATE_NONE;
 1651 
 1652         rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1,
 1653             segs->ds_addr);
 1654 
 1655         bus_dmamap_sync(sc->txq.data_dmat, data->map,
 1656             BUS_DMASYNC_PREWRITE);
 1657 
 1658         sc->txq.queued++;
 1659         sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
 1660 
 1661         return 0;
 1662 }
 1663 
 1664 static int
 1665 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
 1666     struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
 1667 {
 1668         struct ieee80211vap *vap = ni->ni_vap;
 1669         struct ieee80211com *ic = ni->ni_ic;
 1670         struct rt2560_tx_desc *desc;
 1671         struct rt2560_tx_data *data;
 1672         bus_dma_segment_t segs[RT2560_MAX_SCATTER];
 1673         uint32_t flags;
 1674         int nsegs, rate, error;
 1675 
 1676         desc = &sc->prioq.desc[sc->prioq.cur];
 1677         data = &sc->prioq.data[sc->prioq.cur];
 1678 
 1679         rate = params->ibp_rate0;
 1680         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
 1681                 /* XXX fall back to mcast/mgmt rate? */
 1682                 m_freem(m0);
 1683                 return EINVAL;
 1684         }
 1685 
 1686         flags = 0;
 1687         if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
 1688                 flags |= RT2560_TX_ACK;
 1689         if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) {
 1690                 error = rt2560_sendprot(sc, m0, ni,
 1691                     params->ibp_flags & IEEE80211_BPF_RTS ?
 1692                          IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY,
 1693                     rate);
 1694                 if (error) {
 1695                         m_freem(m0);
 1696                         return error;
 1697                 }
 1698                 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
 1699         }
 1700 
 1701         error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
 1702             segs, &nsegs, 0);
 1703         if (error != 0) {
 1704                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
 1705                     error);
 1706                 m_freem(m0);
 1707                 return error;
 1708         }
 1709 
 1710         if (ieee80211_radiotap_active_vap(vap)) {
 1711                 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
 1712 
 1713                 tap->wt_flags = 0;
 1714                 tap->wt_rate = rate;
 1715                 tap->wt_antenna = sc->tx_ant;
 1716 
 1717                 ieee80211_radiotap_tx(ni->ni_vap, m0);
 1718         }
 1719 
 1720         data->m = m0;
 1721         data->ni = ni;
 1722 
 1723         /* XXX need to setup descriptor ourself */
 1724         rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
 1725             rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
 1726             segs->ds_addr);
 1727 
 1728         bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
 1729         bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
 1730             BUS_DMASYNC_PREWRITE);
 1731 
 1732         DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n",
 1733             m0->m_pkthdr.len, sc->prioq.cur, rate);
 1734 
 1735         /* kick prio */
 1736         sc->prioq.queued++;
 1737         sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
 1738         RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
 1739 
 1740         return 0;
 1741 }
 1742 
 1743 static int
 1744 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
 1745     struct ieee80211_node *ni)
 1746 {
 1747         struct ieee80211vap *vap = ni->ni_vap;
 1748         struct ieee80211com *ic = ni->ni_ic;
 1749         struct rt2560_tx_desc *desc;
 1750         struct rt2560_tx_data *data;
 1751         struct ieee80211_frame *wh;
 1752         const struct ieee80211_txparam *tp;
 1753         struct ieee80211_key *k;
 1754         struct mbuf *mnew;
 1755         bus_dma_segment_t segs[RT2560_MAX_SCATTER];
 1756         uint16_t dur;
 1757         uint32_t flags;
 1758         int nsegs, rate, error;
 1759 
 1760         wh = mtod(m0, struct ieee80211_frame *);
 1761 
 1762         tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
 1763         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 1764                 rate = tp->mcastrate;
 1765         } else if (m0->m_flags & M_EAPOL) {
 1766                 rate = tp->mgmtrate;
 1767         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
 1768                 rate = tp->ucastrate;
 1769         } else {
 1770                 (void) ieee80211_ratectl_rate(ni, NULL, 0);
 1771                 rate = ni->ni_txrate;
 1772         }
 1773 
 1774         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
 1775                 k = ieee80211_crypto_encap(ni, m0);
 1776                 if (k == NULL) {
 1777                         m_freem(m0);
 1778                         return ENOBUFS;
 1779                 }
 1780 
 1781                 /* packet header may have moved, reset our local pointer */
 1782                 wh = mtod(m0, struct ieee80211_frame *);
 1783         }
 1784 
 1785         flags = 0;
 1786         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 1787                 int prot = IEEE80211_PROT_NONE;
 1788                 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold)
 1789                         prot = IEEE80211_PROT_RTSCTS;
 1790                 else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
 1791                     ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM)
 1792                         prot = ic->ic_protmode;
 1793                 if (prot != IEEE80211_PROT_NONE) {
 1794                         error = rt2560_sendprot(sc, m0, ni, prot, rate);
 1795                         if (error) {
 1796                                 m_freem(m0);
 1797                                 return error;
 1798                         }
 1799                         flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
 1800                 }
 1801         }
 1802 
 1803         data = &sc->txq.data[sc->txq.cur_encrypt];
 1804         desc = &sc->txq.desc[sc->txq.cur_encrypt];
 1805 
 1806         error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
 1807             segs, &nsegs, 0);
 1808         if (error != 0 && error != EFBIG) {
 1809                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
 1810                     error);
 1811                 m_freem(m0);
 1812                 return error;
 1813         }
 1814         if (error != 0) {
 1815                 mnew = m_defrag(m0, M_NOWAIT);
 1816                 if (mnew == NULL) {
 1817                         device_printf(sc->sc_dev,
 1818                             "could not defragment mbuf\n");
 1819                         m_freem(m0);
 1820                         return ENOBUFS;
 1821                 }
 1822                 m0 = mnew;
 1823 
 1824                 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
 1825                     m0, segs, &nsegs, 0);
 1826                 if (error != 0) {
 1827                         device_printf(sc->sc_dev,
 1828                             "could not map mbuf (error %d)\n", error);
 1829                         m_freem(m0);
 1830                         return error;
 1831                 }
 1832 
 1833                 /* packet header may have moved, reset our local pointer */
 1834                 wh = mtod(m0, struct ieee80211_frame *);
 1835         }
 1836 
 1837         if (ieee80211_radiotap_active_vap(vap)) {
 1838                 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
 1839 
 1840                 tap->wt_flags = 0;
 1841                 tap->wt_rate = rate;
 1842                 tap->wt_antenna = sc->tx_ant;
 1843 
 1844                 ieee80211_radiotap_tx(vap, m0);
 1845         }
 1846 
 1847         data->m = m0;
 1848         data->ni = ni;
 1849 
 1850         /* remember link conditions for rate adaptation algorithm */
 1851         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 1852                 data->rix = ni->ni_txrate;
 1853                 /* XXX probably need last rssi value and not avg */
 1854                 data->rssi = ic->ic_node_getrssi(ni);
 1855         } else
 1856                 data->rix = IEEE80211_FIXED_RATE_NONE;
 1857 
 1858         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 1859                 flags |= RT2560_TX_ACK;
 1860 
 1861                 dur = ieee80211_ack_duration(ic->ic_rt,
 1862                     rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
 1863                 *(uint16_t *)wh->i_dur = htole16(dur);
 1864         }
 1865 
 1866         rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
 1867             segs->ds_addr);
 1868 
 1869         bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
 1870         bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
 1871             BUS_DMASYNC_PREWRITE);
 1872 
 1873         DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n",
 1874             m0->m_pkthdr.len, sc->txq.cur_encrypt, rate);
 1875 
 1876         /* kick encrypt */
 1877         sc->txq.queued++;
 1878         sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
 1879         RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
 1880 
 1881         return 0;
 1882 }
 1883 
 1884 static int
 1885 rt2560_transmit(struct ieee80211com *ic, struct mbuf *m)   
 1886 {
 1887         struct rt2560_softc *sc = ic->ic_softc;
 1888         int error;
 1889 
 1890         RAL_LOCK(sc);
 1891         if ((sc->sc_flags & RT2560_F_RUNNING) == 0) {
 1892                 RAL_UNLOCK(sc);
 1893                 return (ENXIO);
 1894         }
 1895         error = mbufq_enqueue(&sc->sc_snd, m);
 1896         if (error) {
 1897                 RAL_UNLOCK(sc);
 1898                 return (error);
 1899         }
 1900         rt2560_start(sc);
 1901         RAL_UNLOCK(sc);
 1902 
 1903         return (0);
 1904 }
 1905 
 1906 static void
 1907 rt2560_start(struct rt2560_softc *sc)
 1908 {
 1909         struct ieee80211_node *ni;
 1910         struct mbuf *m;
 1911 
 1912         RAL_LOCK_ASSERT(sc);
 1913 
 1914         while (sc->txq.queued < RT2560_TX_RING_COUNT - 1 &&
 1915             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
 1916                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
 1917                 if (rt2560_tx_data(sc, m, ni) != 0) {
 1918                         if_inc_counter(ni->ni_vap->iv_ifp,
 1919                             IFCOUNTER_OERRORS, 1);
 1920                         ieee80211_free_node(ni);
 1921                         break;
 1922                 }
 1923                 sc->sc_tx_timer = 5;
 1924         }
 1925 }
 1926 
 1927 static void
 1928 rt2560_watchdog(void *arg)
 1929 {
 1930         struct rt2560_softc *sc = arg;
 1931 
 1932         RAL_LOCK_ASSERT(sc);
 1933 
 1934         KASSERT(sc->sc_flags & RT2560_F_RUNNING, ("not running"));
 1935 
 1936         if (sc->sc_invalid)             /* card ejected */
 1937                 return;
 1938 
 1939         rt2560_encryption_intr(sc);
 1940         rt2560_tx_intr(sc);
 1941 
 1942         if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) {
 1943                 device_printf(sc->sc_dev, "device timeout\n");
 1944                 rt2560_init_locked(sc);
 1945                 counter_u64_add(sc->sc_ic.ic_oerrors, 1);
 1946                 /* NB: callout is reset in rt2560_init() */
 1947                 return;
 1948         }
 1949         callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
 1950 }
 1951 
 1952 static void
 1953 rt2560_parent(struct ieee80211com *ic)
 1954 {
 1955         struct rt2560_softc *sc = ic->ic_softc;
 1956         int startall = 0;
 1957 
 1958         RAL_LOCK(sc);
 1959         if (ic->ic_nrunning > 0) {
 1960                 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) {
 1961                         rt2560_init_locked(sc);
 1962                         startall = 1;
 1963                 } else
 1964                         rt2560_update_promisc(ic);
 1965         } else if (sc->sc_flags & RT2560_F_RUNNING)
 1966                 rt2560_stop_locked(sc);
 1967         RAL_UNLOCK(sc);
 1968         if (startall)
 1969                 ieee80211_start_all(ic);
 1970 }
 1971 
 1972 static void
 1973 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
 1974 {
 1975         uint32_t tmp;
 1976         int ntries;
 1977 
 1978         for (ntries = 0; ntries < 100; ntries++) {
 1979                 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
 1980                         break;
 1981                 DELAY(1);
 1982         }
 1983         if (ntries == 100) {
 1984                 device_printf(sc->sc_dev, "could not write to BBP\n");
 1985                 return;
 1986         }
 1987 
 1988         tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
 1989         RAL_WRITE(sc, RT2560_BBPCSR, tmp);
 1990 
 1991         DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val);
 1992 }
 1993 
 1994 static uint8_t
 1995 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
 1996 {
 1997         uint32_t val;
 1998         int ntries;
 1999 
 2000         for (ntries = 0; ntries < 100; ntries++) {
 2001                 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
 2002                         break;
 2003                 DELAY(1);
 2004         }
 2005         if (ntries == 100) {
 2006                 device_printf(sc->sc_dev, "could not read from BBP\n");
 2007                 return 0;
 2008         }
 2009 
 2010         val = RT2560_BBP_BUSY | reg << 8;
 2011         RAL_WRITE(sc, RT2560_BBPCSR, val);
 2012 
 2013         for (ntries = 0; ntries < 100; ntries++) {
 2014                 val = RAL_READ(sc, RT2560_BBPCSR);
 2015                 if (!(val & RT2560_BBP_BUSY))
 2016                         return val & 0xff;
 2017                 DELAY(1);
 2018         }
 2019 
 2020         device_printf(sc->sc_dev, "could not read from BBP\n");
 2021         return 0;
 2022 }
 2023 
 2024 static void
 2025 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
 2026 {
 2027         uint32_t tmp;
 2028         int ntries;
 2029 
 2030         for (ntries = 0; ntries < 100; ntries++) {
 2031                 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
 2032                         break;
 2033                 DELAY(1);
 2034         }
 2035         if (ntries == 100) {
 2036                 device_printf(sc->sc_dev, "could not write to RF\n");
 2037                 return;
 2038         }
 2039 
 2040         tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
 2041             (reg & 0x3);
 2042         RAL_WRITE(sc, RT2560_RFCSR, tmp);
 2043 
 2044         /* remember last written value in sc */
 2045         sc->rf_regs[reg] = val;
 2046 
 2047         DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff);
 2048 }
 2049 
 2050 static void
 2051 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
 2052 {
 2053         struct ieee80211com *ic = &sc->sc_ic;
 2054         uint8_t power, tmp;
 2055         u_int i, chan;
 2056 
 2057         chan = ieee80211_chan2ieee(ic, c);
 2058         KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan));
 2059 
 2060         if (IEEE80211_IS_CHAN_2GHZ(c))
 2061                 power = min(sc->txpow[chan - 1], 31);
 2062         else
 2063                 power = 31;
 2064 
 2065         /* adjust txpower using ifconfig settings */
 2066         power -= (100 - ic->ic_txpowlimit) / 8;
 2067 
 2068         DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power);
 2069 
 2070         switch (sc->rf_rev) {
 2071         case RT2560_RF_2522:
 2072                 rt2560_rf_write(sc, RAL_RF1, 0x00814);
 2073                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
 2074                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
 2075                 break;
 2076 
 2077         case RT2560_RF_2523:
 2078                 rt2560_rf_write(sc, RAL_RF1, 0x08804);
 2079                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
 2080                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
 2081                 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 2082                 break;
 2083 
 2084         case RT2560_RF_2524:
 2085                 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
 2086                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
 2087                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
 2088                 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 2089                 break;
 2090 
 2091         case RT2560_RF_2525:
 2092                 rt2560_rf_write(sc, RAL_RF1, 0x08808);
 2093                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
 2094                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
 2095                 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 2096 
 2097                 rt2560_rf_write(sc, RAL_RF1, 0x08808);
 2098                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
 2099                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
 2100                 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 2101                 break;
 2102 
 2103         case RT2560_RF_2525E:
 2104                 rt2560_rf_write(sc, RAL_RF1, 0x08808);
 2105                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
 2106                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
 2107                 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
 2108                 break;
 2109 
 2110         case RT2560_RF_2526:
 2111                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
 2112                 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
 2113                 rt2560_rf_write(sc, RAL_RF1, 0x08804);
 2114 
 2115                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
 2116                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
 2117                 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
 2118                 break;
 2119 
 2120         /* dual-band RF */
 2121         case RT2560_RF_5222:
 2122                 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
 2123 
 2124                 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
 2125                 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
 2126                 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
 2127                 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
 2128                 break;
 2129         default: 
 2130                 printf("unknown ral rev=%d\n", sc->rf_rev);
 2131         }
 2132 
 2133         /* XXX */
 2134         if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
 2135                 /* set Japan filter bit for channel 14 */
 2136                 tmp = rt2560_bbp_read(sc, 70);
 2137 
 2138                 tmp &= ~RT2560_JAPAN_FILTER;
 2139                 if (chan == 14)
 2140                         tmp |= RT2560_JAPAN_FILTER;
 2141 
 2142                 rt2560_bbp_write(sc, 70, tmp);
 2143 
 2144                 /* clear CRC errors */
 2145                 RAL_READ(sc, RT2560_CNT0);
 2146         }
 2147 }
 2148 
 2149 static void
 2150 rt2560_getradiocaps(struct ieee80211com *ic,
 2151     int maxchans, int *nchans, struct ieee80211_channel chans[])
 2152 {
 2153         struct rt2560_softc *sc = ic->ic_softc;
 2154         uint8_t bands[IEEE80211_MODE_BYTES];
 2155 
 2156         memset(bands, 0, sizeof(bands));
 2157         setbit(bands, IEEE80211_MODE_11B);
 2158         setbit(bands, IEEE80211_MODE_11G);
 2159         ieee80211_add_channel_list_2ghz(chans, maxchans, nchans,
 2160             rt2560_chan_2ghz, nitems(rt2560_chan_2ghz), bands, 0);
 2161 
 2162         if (sc->rf_rev == RT2560_RF_5222) {
 2163                 setbit(bands, IEEE80211_MODE_11A);
 2164                 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
 2165                     rt2560_chan_5ghz, nitems(rt2560_chan_5ghz), bands, 0);
 2166         }
 2167 }
 2168 
 2169 static void
 2170 rt2560_set_channel(struct ieee80211com *ic)
 2171 {
 2172         struct rt2560_softc *sc = ic->ic_softc;
 2173 
 2174         RAL_LOCK(sc);
 2175         rt2560_set_chan(sc, ic->ic_curchan);
 2176         RAL_UNLOCK(sc);
 2177 
 2178 }
 2179 
 2180 #if 0
 2181 /*
 2182  * Disable RF auto-tuning.
 2183  */
 2184 static void
 2185 rt2560_disable_rf_tune(struct rt2560_softc *sc)
 2186 {
 2187         uint32_t tmp;
 2188 
 2189         if (sc->rf_rev != RT2560_RF_2523) {
 2190                 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
 2191                 rt2560_rf_write(sc, RAL_RF1, tmp);
 2192         }
 2193 
 2194         tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
 2195         rt2560_rf_write(sc, RAL_RF3, tmp);
 2196 
 2197         DPRINTFN(sc, 2, "%s", "disabling RF autotune\n");
 2198 }
 2199 #endif
 2200 
 2201 /*
 2202  * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
 2203  * synchronization.
 2204  */
 2205 static void
 2206 rt2560_enable_tsf_sync(struct rt2560_softc *sc)
 2207 {
 2208         struct ieee80211com *ic = &sc->sc_ic;
 2209         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 2210         uint16_t logcwmin, preload;
 2211         uint32_t tmp;
 2212 
 2213         /* first, disable TSF synchronization */
 2214         RAL_WRITE(sc, RT2560_CSR14, 0);
 2215 
 2216         tmp = 16 * vap->iv_bss->ni_intval;
 2217         RAL_WRITE(sc, RT2560_CSR12, tmp);
 2218 
 2219         RAL_WRITE(sc, RT2560_CSR13, 0);
 2220 
 2221         logcwmin = 5;
 2222         preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024;
 2223         tmp = logcwmin << 16 | preload;
 2224         RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
 2225 
 2226         /* finally, enable TSF synchronization */
 2227         tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
 2228         if (ic->ic_opmode == IEEE80211_M_STA)
 2229                 tmp |= RT2560_ENABLE_TSF_SYNC(1);
 2230         else
 2231                 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
 2232                        RT2560_ENABLE_BEACON_GENERATOR;
 2233         RAL_WRITE(sc, RT2560_CSR14, tmp);
 2234 
 2235         DPRINTF(sc, "%s", "enabling TSF synchronization\n");
 2236 }
 2237 
 2238 static void
 2239 rt2560_enable_tsf(struct rt2560_softc *sc)
 2240 {
 2241         RAL_WRITE(sc, RT2560_CSR14, 0);
 2242         RAL_WRITE(sc, RT2560_CSR14,
 2243             RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF);
 2244 }
 2245 
 2246 static void
 2247 rt2560_update_plcp(struct rt2560_softc *sc)
 2248 {
 2249         struct ieee80211com *ic = &sc->sc_ic;
 2250 
 2251         /* no short preamble for 1Mbps */
 2252         RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
 2253 
 2254         if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
 2255                 /* values taken from the reference driver */
 2256                 RAL_WRITE(sc, RT2560_PLCP2MCSR,   0x00380401);
 2257                 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
 2258                 RAL_WRITE(sc, RT2560_PLCP11MCSR,  0x000b8403);
 2259         } else {
 2260                 /* same values as above or'ed 0x8 */
 2261                 RAL_WRITE(sc, RT2560_PLCP2MCSR,   0x00380409);
 2262                 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
 2263                 RAL_WRITE(sc, RT2560_PLCP11MCSR,  0x000b840b);
 2264         }
 2265 
 2266         DPRINTF(sc, "updating PLCP for %s preamble\n",
 2267             (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long");
 2268 }
 2269 
 2270 /*
 2271  * This function can be called by ieee80211_set_shortslottime(). Refer to
 2272  * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
 2273  */
 2274 static void
 2275 rt2560_update_slot(struct ieee80211com *ic)
 2276 {
 2277         struct rt2560_softc *sc = ic->ic_softc;
 2278         uint8_t slottime;
 2279         uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
 2280         uint32_t tmp;
 2281 
 2282 #ifndef FORCE_SLOTTIME
 2283         slottime = IEEE80211_GET_SLOTTIME(ic);
 2284 #else
 2285         /*
 2286          * Setting slot time according to "short slot time" capability
 2287          * in beacon/probe_resp seems to cause problem to acknowledge
 2288          * certain AP's data frames transimitted at CCK/DS rates: the
 2289          * problematic AP keeps retransmitting data frames, probably
 2290          * because MAC level acks are not received by hardware.
 2291          * So we cheat a little bit here by claiming we are capable of
 2292          * "short slot time" but setting hardware slot time to the normal
 2293          * slot time.  ral(4) does not seem to have trouble to receive
 2294          * frames transmitted using short slot time even if hardware
 2295          * slot time is set to normal slot time.  If we didn't use this
 2296          * trick, we would have to claim that short slot time is not
 2297          * supported; this would give relative poor RX performance
 2298          * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short
 2299          * slot time.
 2300          */
 2301         slottime = IEEE80211_DUR_SLOT;
 2302 #endif
 2303 
 2304         /* update the MAC slot boundaries */
 2305         tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
 2306         tx_pifs = tx_sifs + slottime;
 2307         tx_difs = IEEE80211_DUR_DIFS(tx_sifs, slottime);
 2308         eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
 2309 
 2310         tmp = RAL_READ(sc, RT2560_CSR11);
 2311         tmp = (tmp & ~0x1f00) | slottime << 8;
 2312         RAL_WRITE(sc, RT2560_CSR11, tmp);
 2313 
 2314         tmp = tx_pifs << 16 | tx_sifs;
 2315         RAL_WRITE(sc, RT2560_CSR18, tmp);
 2316 
 2317         tmp = eifs << 16 | tx_difs;
 2318         RAL_WRITE(sc, RT2560_CSR19, tmp);
 2319 
 2320         DPRINTF(sc, "setting slottime to %uus\n", slottime);
 2321 }
 2322 
 2323 static void
 2324 rt2560_set_basicrates(struct rt2560_softc *sc,
 2325     const struct ieee80211_rateset *rs)
 2326 {
 2327         struct ieee80211com *ic = &sc->sc_ic;
 2328         uint32_t mask = 0;
 2329         uint8_t rate;
 2330         int i;
 2331 
 2332         for (i = 0; i < rs->rs_nrates; i++) {
 2333                 rate = rs->rs_rates[i];
 2334 
 2335                 if (!(rate & IEEE80211_RATE_BASIC))
 2336                         continue;
 2337 
 2338                 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt,
 2339                     IEEE80211_RV(rate));
 2340         }
 2341 
 2342         RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask);
 2343 
 2344         DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask);
 2345 }
 2346 
 2347 static void
 2348 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
 2349 {
 2350         uint32_t tmp;
 2351 
 2352         /* set ON period to 70ms and OFF period to 30ms */
 2353         tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
 2354         RAL_WRITE(sc, RT2560_LEDCSR, tmp);
 2355 }
 2356 
 2357 static void
 2358 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid)
 2359 {
 2360         uint32_t tmp;
 2361 
 2362         tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
 2363         RAL_WRITE(sc, RT2560_CSR5, tmp);
 2364 
 2365         tmp = bssid[4] | bssid[5] << 8;
 2366         RAL_WRITE(sc, RT2560_CSR6, tmp);
 2367 
 2368         DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":");
 2369 }
 2370 
 2371 static void
 2372 rt2560_set_macaddr(struct rt2560_softc *sc, const uint8_t *addr)
 2373 {
 2374         uint32_t tmp;
 2375 
 2376         tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
 2377         RAL_WRITE(sc, RT2560_CSR3, tmp);
 2378 
 2379         tmp = addr[4] | addr[5] << 8;
 2380         RAL_WRITE(sc, RT2560_CSR4, tmp);
 2381 
 2382         DPRINTF(sc, "setting MAC address to %6D\n", addr, ":");
 2383 }
 2384 
 2385 static void
 2386 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
 2387 {
 2388         uint32_t tmp;
 2389 
 2390         tmp = RAL_READ(sc, RT2560_CSR3);
 2391         addr[0] = tmp & 0xff;
 2392         addr[1] = (tmp >>  8) & 0xff;
 2393         addr[2] = (tmp >> 16) & 0xff;
 2394         addr[3] = (tmp >> 24);
 2395 
 2396         tmp = RAL_READ(sc, RT2560_CSR4);
 2397         addr[4] = tmp & 0xff;
 2398         addr[5] = (tmp >> 8) & 0xff;
 2399 }
 2400 
 2401 static void
 2402 rt2560_update_promisc(struct ieee80211com *ic)
 2403 {
 2404         struct rt2560_softc *sc = ic->ic_softc;
 2405         uint32_t tmp;
 2406 
 2407         tmp = RAL_READ(sc, RT2560_RXCSR0);
 2408 
 2409         tmp &= ~RT2560_DROP_NOT_TO_ME;
 2410         if (ic->ic_promisc == 0)
 2411                 tmp |= RT2560_DROP_NOT_TO_ME;
 2412 
 2413         RAL_WRITE(sc, RT2560_RXCSR0, tmp);
 2414 
 2415         DPRINTF(sc, "%s promiscuous mode\n",
 2416             (ic->ic_promisc > 0) ?  "entering" : "leaving");
 2417 }
 2418 
 2419 static const char *
 2420 rt2560_get_rf(int rev)
 2421 {
 2422         switch (rev) {
 2423         case RT2560_RF_2522:    return "RT2522";
 2424         case RT2560_RF_2523:    return "RT2523";
 2425         case RT2560_RF_2524:    return "RT2524";
 2426         case RT2560_RF_2525:    return "RT2525";
 2427         case RT2560_RF_2525E:   return "RT2525e";
 2428         case RT2560_RF_2526:    return "RT2526";
 2429         case RT2560_RF_5222:    return "RT5222";
 2430         default:                return "unknown";
 2431         }
 2432 }
 2433 
 2434 static void
 2435 rt2560_read_config(struct rt2560_softc *sc)
 2436 {
 2437         uint16_t val;
 2438         int i;
 2439 
 2440         val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
 2441         sc->rf_rev =   (val >> 11) & 0x7;
 2442         sc->hw_radio = (val >> 10) & 0x1;
 2443         sc->led_mode = (val >> 6)  & 0x7;
 2444         sc->rx_ant =   (val >> 4)  & 0x3;
 2445         sc->tx_ant =   (val >> 2)  & 0x3;
 2446         sc->nb_ant =   val & 0x3;
 2447 
 2448         /* read default values for BBP registers */
 2449         for (i = 0; i < 16; i++) {
 2450                 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
 2451                 if (val == 0 || val == 0xffff)
 2452                         continue;
 2453 
 2454                 sc->bbp_prom[i].reg = val >> 8;
 2455                 sc->bbp_prom[i].val = val & 0xff;
 2456         }
 2457 
 2458         /* read Tx power for all b/g channels */
 2459         for (i = 0; i < 14 / 2; i++) {
 2460                 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
 2461                 sc->txpow[i * 2] = val & 0xff;
 2462                 sc->txpow[i * 2 + 1] = val >> 8;
 2463         }
 2464         for (i = 0; i < 14; ++i) {
 2465                 if (sc->txpow[i] > 31)
 2466                         sc->txpow[i] = 24;
 2467         }
 2468 
 2469         val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
 2470         if ((val & 0xff) == 0xff)
 2471                 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
 2472         else
 2473                 sc->rssi_corr = val & 0xff;
 2474         DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n",
 2475                  sc->rssi_corr, val);
 2476 }
 2477 
 2478 
 2479 static void
 2480 rt2560_scan_start(struct ieee80211com *ic)
 2481 {
 2482         struct rt2560_softc *sc = ic->ic_softc;
 2483 
 2484         /* abort TSF synchronization */
 2485         RAL_WRITE(sc, RT2560_CSR14, 0);
 2486         rt2560_set_bssid(sc, ieee80211broadcastaddr);
 2487 }
 2488 
 2489 static void
 2490 rt2560_scan_end(struct ieee80211com *ic)
 2491 {
 2492         struct rt2560_softc *sc = ic->ic_softc;
 2493         struct ieee80211vap *vap = ic->ic_scan->ss_vap;
 2494 
 2495         rt2560_enable_tsf_sync(sc);
 2496         /* XXX keep local copy */
 2497         rt2560_set_bssid(sc, vap->iv_bss->ni_bssid);
 2498 }
 2499 
 2500 static int
 2501 rt2560_bbp_init(struct rt2560_softc *sc)
 2502 {
 2503         int i, ntries;
 2504 
 2505         /* wait for BBP to be ready */
 2506         for (ntries = 0; ntries < 100; ntries++) {
 2507                 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
 2508                         break;
 2509                 DELAY(1);
 2510         }
 2511         if (ntries == 100) {
 2512                 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
 2513                 return EIO;
 2514         }
 2515 
 2516         /* initialize BBP registers to default values */
 2517         for (i = 0; i < nitems(rt2560_def_bbp); i++) {
 2518                 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
 2519                     rt2560_def_bbp[i].val);
 2520         }
 2521 
 2522         /* initialize BBP registers to values stored in EEPROM */
 2523         for (i = 0; i < 16; i++) {
 2524                 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0)
 2525                         break;
 2526                 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
 2527         }
 2528         rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */
 2529 
 2530         return 0;
 2531 }
 2532 
 2533 static void
 2534 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
 2535 {
 2536         uint32_t tmp;
 2537         uint8_t tx;
 2538 
 2539         tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
 2540         if (antenna == 1)
 2541                 tx |= RT2560_BBP_ANTA;
 2542         else if (antenna == 2)
 2543                 tx |= RT2560_BBP_ANTB;
 2544         else
 2545                 tx |= RT2560_BBP_DIVERSITY;
 2546 
 2547         /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
 2548         if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
 2549             sc->rf_rev == RT2560_RF_5222)
 2550                 tx |= RT2560_BBP_FLIPIQ;
 2551 
 2552         rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
 2553 
 2554         /* update values for CCK and OFDM in BBPCSR1 */
 2555         tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
 2556         tmp |= (tx & 0x7) << 16 | (tx & 0x7);
 2557         RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
 2558 }
 2559 
 2560 static void
 2561 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
 2562 {
 2563         uint8_t rx;
 2564 
 2565         rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
 2566         if (antenna == 1)
 2567                 rx |= RT2560_BBP_ANTA;
 2568         else if (antenna == 2)
 2569                 rx |= RT2560_BBP_ANTB;
 2570         else
 2571                 rx |= RT2560_BBP_DIVERSITY;
 2572 
 2573         /* need to force no I/Q flip for RF 2525e and 2526 */
 2574         if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
 2575                 rx &= ~RT2560_BBP_FLIPIQ;
 2576 
 2577         rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
 2578 }
 2579 
 2580 static void
 2581 rt2560_init_locked(struct rt2560_softc *sc)
 2582 {
 2583         struct ieee80211com *ic = &sc->sc_ic;
 2584         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 2585         uint32_t tmp;
 2586         int i;
 2587 
 2588         RAL_LOCK_ASSERT(sc);
 2589 
 2590         rt2560_stop_locked(sc);
 2591 
 2592         /* setup tx rings */
 2593         tmp = RT2560_PRIO_RING_COUNT << 24 |
 2594               RT2560_ATIM_RING_COUNT << 16 |
 2595               RT2560_TX_RING_COUNT   <<  8 |
 2596               RT2560_TX_DESC_SIZE;
 2597 
 2598         /* rings must be initialized in this exact order */
 2599         RAL_WRITE(sc, RT2560_TXCSR2, tmp);
 2600         RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
 2601         RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
 2602         RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
 2603         RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
 2604 
 2605         /* setup rx ring */
 2606         tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
 2607 
 2608         RAL_WRITE(sc, RT2560_RXCSR1, tmp);
 2609         RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
 2610 
 2611         /* initialize MAC registers to default values */
 2612         for (i = 0; i < nitems(rt2560_def_mac); i++)
 2613                 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
 2614 
 2615         rt2560_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr);
 2616 
 2617         /* set basic rate set (will be updated later) */
 2618         RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
 2619 
 2620         rt2560_update_slot(ic);
 2621         rt2560_update_plcp(sc);
 2622         rt2560_update_led(sc, 0, 0);
 2623 
 2624         RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
 2625         RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
 2626 
 2627         if (rt2560_bbp_init(sc) != 0) {
 2628                 rt2560_stop_locked(sc);
 2629                 return;
 2630         }
 2631 
 2632         rt2560_set_txantenna(sc, sc->tx_ant);
 2633         rt2560_set_rxantenna(sc, sc->rx_ant);
 2634 
 2635         /* set default BSS channel */
 2636         rt2560_set_chan(sc, ic->ic_curchan);
 2637 
 2638         /* kick Rx */
 2639         tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
 2640         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
 2641                 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
 2642                 if (ic->ic_opmode != IEEE80211_M_HOSTAP &&
 2643                     ic->ic_opmode != IEEE80211_M_MBSS)
 2644                         tmp |= RT2560_DROP_TODS;
 2645                 if (ic->ic_promisc == 0)
 2646                         tmp |= RT2560_DROP_NOT_TO_ME;
 2647         }
 2648         RAL_WRITE(sc, RT2560_RXCSR0, tmp);
 2649 
 2650         /* clear old FCS and Rx FIFO errors */
 2651         RAL_READ(sc, RT2560_CNT0);
 2652         RAL_READ(sc, RT2560_CNT4);
 2653 
 2654         /* clear any pending interrupts */
 2655         RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
 2656 
 2657         /* enable interrupts */
 2658         RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
 2659 
 2660         sc->sc_flags |= RT2560_F_RUNNING;
 2661 
 2662         callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
 2663 }
 2664 
 2665 static void
 2666 rt2560_init(void *priv)
 2667 {
 2668         struct rt2560_softc *sc = priv;
 2669         struct ieee80211com *ic = &sc->sc_ic;
 2670 
 2671         RAL_LOCK(sc);
 2672         rt2560_init_locked(sc);
 2673         RAL_UNLOCK(sc);
 2674 
 2675         if (sc->sc_flags & RT2560_F_RUNNING)
 2676                 ieee80211_start_all(ic);                /* start all vap's */
 2677 }
 2678 
 2679 static void
 2680 rt2560_stop_locked(struct rt2560_softc *sc)
 2681 {
 2682         volatile int *flags = &sc->sc_flags;
 2683 
 2684         RAL_LOCK_ASSERT(sc);
 2685 
 2686         while (*flags & RT2560_F_INPUT_RUNNING)
 2687                 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10);
 2688 
 2689         callout_stop(&sc->watchdog_ch);
 2690         sc->sc_tx_timer = 0;
 2691 
 2692         if (sc->sc_flags & RT2560_F_RUNNING) {
 2693                 sc->sc_flags &= ~RT2560_F_RUNNING;
 2694 
 2695                 /* abort Tx */
 2696                 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
 2697                 
 2698                 /* disable Rx */
 2699                 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
 2700 
 2701                 /* reset ASIC (imply reset BBP) */
 2702                 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
 2703                 RAL_WRITE(sc, RT2560_CSR1, 0);
 2704 
 2705                 /* disable interrupts */
 2706                 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
 2707                 
 2708                 /* reset Tx and Rx rings */
 2709                 rt2560_reset_tx_ring(sc, &sc->txq);
 2710                 rt2560_reset_tx_ring(sc, &sc->atimq);
 2711                 rt2560_reset_tx_ring(sc, &sc->prioq);
 2712                 rt2560_reset_tx_ring(sc, &sc->bcnq);
 2713                 rt2560_reset_rx_ring(sc, &sc->rxq);
 2714         }
 2715 }
 2716 
 2717 void
 2718 rt2560_stop(void *arg)
 2719 {
 2720         struct rt2560_softc *sc = arg;
 2721 
 2722         RAL_LOCK(sc);
 2723         rt2560_stop_locked(sc);
 2724         RAL_UNLOCK(sc);
 2725 }
 2726 
 2727 static int
 2728 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 2729         const struct ieee80211_bpf_params *params)
 2730 {
 2731         struct ieee80211com *ic = ni->ni_ic;
 2732         struct rt2560_softc *sc = ic->ic_softc;
 2733 
 2734         RAL_LOCK(sc);
 2735 
 2736         /* prevent management frames from being sent if we're not ready */
 2737         if (!(sc->sc_flags & RT2560_F_RUNNING)) {
 2738                 RAL_UNLOCK(sc);
 2739                 m_freem(m);
 2740                 return ENETDOWN;
 2741         }
 2742         if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
 2743                 RAL_UNLOCK(sc);
 2744                 m_freem(m);
 2745                 return ENOBUFS;         /* XXX */
 2746         }
 2747 
 2748         if (params == NULL) {
 2749                 /*
 2750                  * Legacy path; interpret frame contents to decide
 2751                  * precisely how to send the frame.
 2752                  */
 2753                 if (rt2560_tx_mgt(sc, m, ni) != 0)
 2754                         goto bad;
 2755         } else {
 2756                 /*
 2757                  * Caller supplied explicit parameters to use in
 2758                  * sending the frame.
 2759                  */
 2760                 if (rt2560_tx_raw(sc, m, ni, params))
 2761                         goto bad;
 2762         }
 2763         sc->sc_tx_timer = 5;
 2764 
 2765         RAL_UNLOCK(sc);
 2766 
 2767         return 0;
 2768 bad:
 2769         RAL_UNLOCK(sc);
 2770         return EIO;             /* XXX */
 2771 }

Cache object: c9600dd13728b793a51fa8fb465a5793


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.