if_bwi.c

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    1 /*
    2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
    3  * 
    4  * This code is derived from software contributed to The DragonFly Project
    5  * by Sepherosa Ziehau <sepherosa@gmail.com>
    6  * 
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in
   15  *    the documentation and/or other materials provided with the
   16  *    distribution.
   17  * 3. Neither the name of The DragonFly Project nor the names of its
   18  *    contributors may be used to endorse or promote products derived
   19  *    from this software without specific, prior written permission.
   20  * 
   21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
   25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
   27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  * 
   34  * $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.19 2008/02/15 11:15:38 sephe Exp $
   35  */
   36 
   37 #include <sys/cdefs.h>
   38 __FBSDID("$FreeBSD: releng/11.2/sys/dev/bwi/if_bwi.c 331722 2018-03-29 02:50:57Z eadler $");
   39 
   40 #include "opt_inet.h"
   41 #include "opt_bwi.h"
   42 #include "opt_wlan.h"
   43 
   44 #include <sys/param.h>
   45 #include <sys/endian.h>
   46 #include <sys/kernel.h>
   47 #include <sys/bus.h>
   48 #include <sys/malloc.h>
   49 #include <sys/proc.h>
   50 #include <sys/rman.h>
   51 #include <sys/socket.h>
   52 #include <sys/sockio.h>
   53 #include <sys/sysctl.h>
   54 #include <sys/systm.h>
   55 #include <sys/taskqueue.h>
   56  
   57 #include <net/if.h>
   58 #include <net/if_var.h>
   59 #include <net/if_dl.h>
   60 #include <net/if_media.h>
   61 #include <net/if_types.h>
   62 #include <net/if_arp.h>
   63 #include <net/ethernet.h>
   64 #include <net/if_llc.h>
   65 
   66 #include <net80211/ieee80211_var.h>
   67 #include <net80211/ieee80211_radiotap.h>
   68 #include <net80211/ieee80211_regdomain.h>
   69 #include <net80211/ieee80211_phy.h>
   70 #include <net80211/ieee80211_ratectl.h>
   71 
   72 #include <net/bpf.h>
   73 
   74 #ifdef INET
   75 #include <netinet/in.h> 
   76 #include <netinet/if_ether.h>
   77 #endif
   78 
   79 #include <machine/bus.h>
   80 
   81 #include <dev/pci/pcivar.h>
   82 #include <dev/pci/pcireg.h>
   83 
   84 #include <dev/bwi/bitops.h>
   85 #include <dev/bwi/if_bwireg.h>
   86 #include <dev/bwi/if_bwivar.h>
   87 #include <dev/bwi/bwimac.h>
   88 #include <dev/bwi/bwirf.h>
   89 
   90 struct bwi_clock_freq {
   91         u_int           clkfreq_min;
   92         u_int           clkfreq_max;
   93 };
   94 
   95 struct bwi_myaddr_bssid {
   96         uint8_t         myaddr[IEEE80211_ADDR_LEN];
   97         uint8_t         bssid[IEEE80211_ADDR_LEN];
   98 } __packed;
   99 
  100 static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
  101                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
  102                     const uint8_t [IEEE80211_ADDR_LEN],
  103                     const uint8_t [IEEE80211_ADDR_LEN]);
  104 static void     bwi_vap_delete(struct ieee80211vap *);
  105 static void     bwi_init(struct bwi_softc *);
  106 static void     bwi_parent(struct ieee80211com *);
  107 static int      bwi_transmit(struct ieee80211com *, struct mbuf *);
  108 static void     bwi_start_locked(struct bwi_softc *);
  109 static int      bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
  110                         const struct ieee80211_bpf_params *);
  111 static void     bwi_watchdog(void *);
  112 static void     bwi_scan_start(struct ieee80211com *);
  113 static void     bwi_getradiocaps(struct ieee80211com *, int, int *,
  114                     struct ieee80211_channel[]);
  115 static void     bwi_set_channel(struct ieee80211com *);
  116 static void     bwi_scan_end(struct ieee80211com *);
  117 static int      bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
  118 static void     bwi_updateslot(struct ieee80211com *);
  119 static int      bwi_media_change(struct ifnet *);
  120 
  121 static void     bwi_calibrate(void *);
  122 
  123 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
  124 static int      bwi_calc_noise(struct bwi_softc *);
  125 static __inline uint8_t bwi_plcp2rate(uint32_t, enum ieee80211_phytype);
  126 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
  127                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
  128 
  129 static void     bwi_restart(void *, int);
  130 static void     bwi_init_statechg(struct bwi_softc *, int);
  131 static void     bwi_stop(struct bwi_softc *, int);
  132 static void     bwi_stop_locked(struct bwi_softc *, int);
  133 static int      bwi_newbuf(struct bwi_softc *, int, int);
  134 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
  135                           struct ieee80211_node *);
  136 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
  137                           struct ieee80211_node *,
  138                           const struct ieee80211_bpf_params *);
  139 
  140 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
  141                                        bus_addr_t, int, int);
  142 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
  143 
  144 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
  145 static int      bwi_init_rx_ring32(struct bwi_softc *);
  146 static int      bwi_init_txstats32(struct bwi_softc *);
  147 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
  148 static void     bwi_free_rx_ring32(struct bwi_softc *);
  149 static void     bwi_free_txstats32(struct bwi_softc *);
  150 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
  151 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
  152                                     int, bus_addr_t, int);
  153 static int      bwi_rxeof32(struct bwi_softc *);
  154 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
  155 static void     bwi_txeof_status32(struct bwi_softc *);
  156 
  157 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
  158 static int      bwi_init_rx_ring64(struct bwi_softc *);
  159 static int      bwi_init_txstats64(struct bwi_softc *);
  160 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
  161 static void     bwi_free_rx_ring64(struct bwi_softc *);
  162 static void     bwi_free_txstats64(struct bwi_softc *);
  163 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
  164 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
  165                                     int, bus_addr_t, int);
  166 static int      bwi_rxeof64(struct bwi_softc *);
  167 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
  168 static void     bwi_txeof_status64(struct bwi_softc *);
  169 
  170 static int      bwi_rxeof(struct bwi_softc *, int);
  171 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
  172 static void     bwi_txeof(struct bwi_softc *);
  173 static void     bwi_txeof_status(struct bwi_softc *, int);
  174 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
  175 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
  176 
  177 static int      bwi_dma_alloc(struct bwi_softc *);
  178 static void     bwi_dma_free(struct bwi_softc *);
  179 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
  180                                    struct bwi_ring_data *, bus_size_t,
  181                                    uint32_t);
  182 static int      bwi_dma_mbuf_create(struct bwi_softc *);
  183 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
  184 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
  185 static void     bwi_dma_txstats_free(struct bwi_softc *);
  186 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
  187 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
  188                                  bus_size_t, int);
  189 
  190 static void     bwi_power_on(struct bwi_softc *, int);
  191 static int      bwi_power_off(struct bwi_softc *, int);
  192 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
  193 static int      bwi_set_clock_delay(struct bwi_softc *);
  194 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
  195 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
  196 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
  197                                     const uint8_t *);
  198 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
  199 
  200 static void     bwi_get_card_flags(struct bwi_softc *);
  201 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
  202 
  203 static int      bwi_bus_attach(struct bwi_softc *);
  204 static int      bwi_bbp_attach(struct bwi_softc *);
  205 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
  206 static void     bwi_bbp_power_off(struct bwi_softc *);
  207 
  208 static const char *bwi_regwin_name(const struct bwi_regwin *);
  209 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
  210 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
  211 static int      bwi_regwin_select(struct bwi_softc *, int);
  212 
  213 static void     bwi_led_attach(struct bwi_softc *);
  214 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
  215 static void     bwi_led_event(struct bwi_softc *, int);
  216 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
  217 static void     bwi_led_blink_next(void *);
  218 static void     bwi_led_blink_end(void *);
  219 
  220 static const struct {
  221         uint16_t        did_min;
  222         uint16_t        did_max;
  223         uint16_t        bbp_id;
  224 } bwi_bbpid_map[] = {
  225         { 0x4301, 0x4301, 0x4301 },
  226         { 0x4305, 0x4307, 0x4307 },
  227         { 0x4402, 0x4403, 0x4402 },
  228         { 0x4610, 0x4615, 0x4610 },
  229         { 0x4710, 0x4715, 0x4710 },
  230         { 0x4720, 0x4725, 0x4309 }
  231 };
  232 
  233 static const struct {
  234         uint16_t        bbp_id;
  235         int             nregwin;
  236 } bwi_regwin_count[] = {
  237         { 0x4301, 5 },
  238         { 0x4306, 6 },
  239         { 0x4307, 5 },
  240         { 0x4310, 8 },
  241         { 0x4401, 3 },
  242         { 0x4402, 3 },
  243         { 0x4610, 9 },
  244         { 0x4704, 9 },
  245         { 0x4710, 9 },
  246         { 0x5365, 7 }
  247 };
  248 
  249 #define CLKSRC(src)                             \
  250 [BWI_CLKSRC_ ## src] = {                        \
  251         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
  252         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
  253 }
  254 
  255 static const struct {
  256         u_int   freq_min;
  257         u_int   freq_max;
  258 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
  259         CLKSRC(LP_OSC),
  260         CLKSRC(CS_OSC),
  261         CLKSRC(PCI)
  262 };
  263 
  264 #undef CLKSRC
  265 
  266 #define VENDOR_LED_ACT(vendor)                          \
  267 {                                                       \
  268         .vid = PCI_VENDOR_##vendor,                     \
  269         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
  270 }
  271 
  272 static const struct {
  273 #define PCI_VENDOR_COMPAQ       0x0e11
  274 #define PCI_VENDOR_LINKSYS      0x1737
  275         uint16_t        vid;
  276         uint8_t         led_act[BWI_LED_MAX];
  277 } bwi_vendor_led_act[] = {
  278         VENDOR_LED_ACT(COMPAQ),
  279         VENDOR_LED_ACT(LINKSYS)
  280 #undef PCI_VENDOR_LINKSYS
  281 #undef PCI_VENDOR_COMPAQ
  282 };
  283 
  284 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
  285         { BWI_VENDOR_LED_ACT_DEFAULT };
  286 
  287 #undef VENDOR_LED_ACT
  288 
  289 static const struct {
  290         int     on_dur;
  291         int     off_dur;
  292 } bwi_led_duration[109] = {
  293         [0]     = { 400, 100 },
  294         [2]     = { 150, 75 },
  295         [4]     = { 90, 45 },
  296         [11]    = { 66, 34 },
  297         [12]    = { 53, 26 },
  298         [18]    = { 42, 21 },
  299         [22]    = { 35, 17 },
  300         [24]    = { 32, 16 },
  301         [36]    = { 21, 10 },
  302         [48]    = { 16, 8 },
  303         [72]    = { 11, 5 },
  304         [96]    = { 9, 4 },
  305         [108]   = { 7, 3 }
  306 };
  307 
  308 static const uint8_t bwi_chan_2ghz[] =
  309         { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 };
  310 
  311 #ifdef BWI_DEBUG
  312 #ifdef BWI_DEBUG_VERBOSE
  313 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
  314 #else
  315 static uint32_t bwi_debug;
  316 #endif
  317 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
  318 #endif  /* BWI_DEBUG */
  319 
  320 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
  321 
  322 uint16_t
  323 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
  324 {
  325         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
  326 }
  327 
  328 static __inline void
  329 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
  330                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
  331                  int tx)
  332 {
  333         struct bwi_desc32 *desc = &desc_array[desc_idx];
  334         uint32_t ctrl, addr, addr_hi, addr_lo;
  335 
  336         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
  337         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
  338 
  339         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
  340                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
  341 
  342         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
  343                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
  344         if (desc_idx == ndesc - 1)
  345                 ctrl |= BWI_DESC32_C_EOR;
  346         if (tx) {
  347                 /* XXX */
  348                 ctrl |= BWI_DESC32_C_FRAME_START |
  349                         BWI_DESC32_C_FRAME_END |
  350                         BWI_DESC32_C_INTR;
  351         }
  352 
  353         desc->addr = htole32(addr);
  354         desc->ctrl = htole32(ctrl);
  355 }
  356 
  357 int
  358 bwi_attach(struct bwi_softc *sc)
  359 {
  360         struct ieee80211com *ic = &sc->sc_ic;
  361         device_t dev = sc->sc_dev;
  362         struct bwi_mac *mac;
  363         struct bwi_phy *phy;
  364         int i, error;
  365 
  366         BWI_LOCK_INIT(sc);
  367 
  368         /*
  369          * Initialize taskq and various tasks
  370          */
  371         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
  372                 taskqueue_thread_enqueue, &sc->sc_tq);
  373         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
  374                 device_get_nameunit(dev));
  375         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
  376         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
  377         mbufq_init(&sc->sc_snd, ifqmaxlen);
  378 
  379         /*
  380          * Initialize sysctl variables
  381          */
  382         sc->sc_fw_version = BWI_FW_VERSION3;
  383         sc->sc_led_idle = (2350 * hz) / 1000;
  384         sc->sc_led_ticks = ticks - sc->sc_led_idle;
  385         sc->sc_led_blink = 1;
  386         sc->sc_txpwr_calib = 1;
  387 #ifdef BWI_DEBUG
  388         sc->sc_debug = bwi_debug;
  389 #endif
  390         bwi_power_on(sc, 1);
  391 
  392         error = bwi_bbp_attach(sc);
  393         if (error)
  394                 goto fail;
  395 
  396         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
  397         if (error)
  398                 goto fail;
  399 
  400         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
  401                 error = bwi_set_clock_delay(sc);
  402                 if (error)
  403                         goto fail;
  404 
  405                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
  406                 if (error)
  407                         goto fail;
  408 
  409                 error = bwi_get_pwron_delay(sc);
  410                 if (error)
  411                         goto fail;
  412         }
  413 
  414         error = bwi_bus_attach(sc);
  415         if (error)
  416                 goto fail;
  417 
  418         bwi_get_card_flags(sc);
  419 
  420         bwi_led_attach(sc);
  421 
  422         for (i = 0; i < sc->sc_nmac; ++i) {
  423                 struct bwi_regwin *old;
  424 
  425                 mac = &sc->sc_mac[i];
  426                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
  427                 if (error)
  428                         goto fail;
  429 
  430                 error = bwi_mac_lateattach(mac);
  431                 if (error)
  432                         goto fail;
  433 
  434                 error = bwi_regwin_switch(sc, old, NULL);
  435                 if (error)
  436                         goto fail;
  437         }
  438 
  439         /*
  440          * XXX First MAC is known to exist
  441          * TODO2
  442          */
  443         mac = &sc->sc_mac[0];
  444         phy = &mac->mac_phy;
  445 
  446         bwi_bbp_power_off(sc);
  447 
  448         error = bwi_dma_alloc(sc);
  449         if (error)
  450                 goto fail;
  451 
  452         error = bwi_mac_fw_alloc(mac);
  453         if (error)
  454                 goto fail;
  455 
  456         callout_init_mtx(&sc->sc_watchdog_timer, &sc->sc_mtx, 0);
  457 
  458         /*
  459          * Setup ratesets, phytype, channels and get MAC address
  460          */
  461         if (phy->phy_mode == IEEE80211_MODE_11B ||
  462             phy->phy_mode == IEEE80211_MODE_11G) {
  463                 if (phy->phy_mode == IEEE80211_MODE_11B) {
  464                         ic->ic_phytype = IEEE80211_T_DS;
  465                 } else {
  466                         ic->ic_phytype = IEEE80211_T_OFDM;
  467                 }
  468 
  469                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_macaddr);
  470                 if (IEEE80211_IS_MULTICAST(ic->ic_macaddr)) {
  471                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_macaddr);
  472                         if (IEEE80211_IS_MULTICAST(ic->ic_macaddr)) {
  473                                 device_printf(dev,
  474                                     "invalid MAC address: %6D\n",
  475                                     ic->ic_macaddr, ":");
  476                         }
  477                 }
  478         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
  479                 /* TODO:11A */
  480                 error = ENXIO;
  481                 goto fail;
  482         } else {
  483                 panic("unknown phymode %d\n", phy->phy_mode);
  484         }
  485 
  486         /* Get locale */
  487         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
  488                                    BWI_SPROM_CARD_INFO_LOCALE);
  489         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
  490         /* XXX use locale */
  491         bwi_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
  492             ic->ic_channels);
  493 
  494         ic->ic_softc = sc;
  495         ic->ic_name = device_get_nameunit(dev);
  496         ic->ic_caps = IEEE80211_C_STA |
  497                       IEEE80211_C_SHSLOT |
  498                       IEEE80211_C_SHPREAMBLE |
  499                       IEEE80211_C_WPA |
  500                       IEEE80211_C_BGSCAN |
  501                       IEEE80211_C_MONITOR;
  502         ic->ic_opmode = IEEE80211_M_STA;
  503         ieee80211_ifattach(ic);
  504 
  505         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
  506 
  507         /* override default methods */
  508         ic->ic_vap_create = bwi_vap_create;
  509         ic->ic_vap_delete = bwi_vap_delete;
  510         ic->ic_raw_xmit = bwi_raw_xmit;
  511         ic->ic_updateslot = bwi_updateslot;
  512         ic->ic_scan_start = bwi_scan_start;
  513         ic->ic_scan_end = bwi_scan_end;
  514         ic->ic_getradiocaps = bwi_getradiocaps;
  515         ic->ic_set_channel = bwi_set_channel;
  516         ic->ic_transmit = bwi_transmit;
  517         ic->ic_parent = bwi_parent;
  518 
  519         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
  520 
  521         ieee80211_radiotap_attach(ic,
  522             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
  523                 BWI_TX_RADIOTAP_PRESENT,
  524             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
  525                 BWI_RX_RADIOTAP_PRESENT);
  526 
  527         /*
  528          * Add sysctl nodes
  529          */
  530         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  531                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  532                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
  533                         "Firmware version");
  534         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  535                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  536                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
  537                         "# ticks before LED enters idle state");
  538         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  539                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  540                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
  541                        "Allow LED to blink");
  542         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
  543                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  544                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
  545                        "Enable software TX power calibration");
  546 #ifdef BWI_DEBUG
  547         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
  548                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
  549                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
  550 #endif
  551         if (bootverbose)
  552                 ieee80211_announce(ic);
  553 
  554         return (0);
  555 fail:
  556         BWI_LOCK_DESTROY(sc);
  557         return (error);
  558 }
  559 
  560 int
  561 bwi_detach(struct bwi_softc *sc)
  562 {
  563         struct ieee80211com *ic = &sc->sc_ic;
  564         int i;
  565 
  566         bwi_stop(sc, 1);
  567         callout_drain(&sc->sc_led_blink_ch);
  568         callout_drain(&sc->sc_calib_ch);
  569         callout_drain(&sc->sc_watchdog_timer);
  570         ieee80211_ifdetach(ic);
  571 
  572         for (i = 0; i < sc->sc_nmac; ++i)
  573                 bwi_mac_detach(&sc->sc_mac[i]);
  574         bwi_dma_free(sc);
  575         taskqueue_free(sc->sc_tq);
  576         mbufq_drain(&sc->sc_snd);
  577 
  578         BWI_LOCK_DESTROY(sc);
  579 
  580         return (0);
  581 }
  582 
  583 static struct ieee80211vap *
  584 bwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
  585     enum ieee80211_opmode opmode, int flags,
  586     const uint8_t bssid[IEEE80211_ADDR_LEN],
  587     const uint8_t mac[IEEE80211_ADDR_LEN])
  588 {
  589         struct bwi_vap *bvp;
  590         struct ieee80211vap *vap;
  591 
  592         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
  593                 return NULL;
  594         bvp = malloc(sizeof(struct bwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
  595         vap = &bvp->bv_vap;
  596         /* enable s/w bmiss handling for sta mode */
  597         ieee80211_vap_setup(ic, vap, name, unit, opmode,
  598             flags | IEEE80211_CLONE_NOBEACONS, bssid);
  599 
  600         /* override default methods */
  601         bvp->bv_newstate = vap->iv_newstate;
  602         vap->iv_newstate = bwi_newstate;
  603 #if 0
  604         vap->iv_update_beacon = bwi_beacon_update;
  605 #endif
  606         ieee80211_ratectl_init(vap);
  607 
  608         /* complete setup */
  609         ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status,
  610             mac);
  611         ic->ic_opmode = opmode;
  612         return vap;
  613 }
  614 
  615 static void
  616 bwi_vap_delete(struct ieee80211vap *vap)
  617 {
  618         struct bwi_vap *bvp = BWI_VAP(vap);
  619 
  620         ieee80211_ratectl_deinit(vap);
  621         ieee80211_vap_detach(vap);
  622         free(bvp, M_80211_VAP);
  623 }
  624 
  625 void
  626 bwi_suspend(struct bwi_softc *sc)
  627 {
  628         bwi_stop(sc, 1);
  629 }
  630 
  631 void
  632 bwi_resume(struct bwi_softc *sc)
  633 {
  634 
  635         if (sc->sc_ic.ic_nrunning > 0)
  636                 bwi_init(sc);
  637 }
  638 
  639 int
  640 bwi_shutdown(struct bwi_softc *sc)
  641 {
  642         bwi_stop(sc, 1);
  643         return 0;
  644 }
  645 
  646 static void
  647 bwi_power_on(struct bwi_softc *sc, int with_pll)
  648 {
  649         uint32_t gpio_in, gpio_out, gpio_en;
  650         uint16_t status;
  651 
  652         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
  653         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
  654                 goto back;
  655 
  656         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
  657         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
  658 
  659         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
  660         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
  661         if (with_pll) {
  662                 /* Turn off PLL first */
  663                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  664                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  665         }
  666 
  667         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
  668         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
  669         DELAY(1000);
  670 
  671         if (with_pll) {
  672                 /* Turn on PLL */
  673                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
  674                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
  675                 DELAY(5000);
  676         }
  677 
  678 back:
  679         /* Clear "Signaled Target Abort" */
  680         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
  681         status &= ~PCIM_STATUS_STABORT;
  682         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
  683 }
  684 
  685 static int
  686 bwi_power_off(struct bwi_softc *sc, int with_pll)
  687 {
  688         uint32_t gpio_out, gpio_en;
  689 
  690         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
  691         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
  692         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
  693 
  694         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
  695         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
  696         if (with_pll) {
  697                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  698                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
  699         }
  700 
  701         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
  702         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
  703         return 0;
  704 }
  705 
  706 int
  707 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
  708                   struct bwi_regwin **old_rw)
  709 {
  710         int error;
  711 
  712         if (old_rw != NULL)
  713                 *old_rw = NULL;
  714 
  715         if (!BWI_REGWIN_EXIST(rw))
  716                 return EINVAL;
  717 
  718         if (sc->sc_cur_regwin != rw) {
  719                 error = bwi_regwin_select(sc, rw->rw_id);
  720                 if (error) {
  721                         device_printf(sc->sc_dev, "can't select regwin %d\n",
  722                                   rw->rw_id);
  723                         return error;
  724                 }
  725         }
  726 
  727         if (old_rw != NULL)
  728                 *old_rw = sc->sc_cur_regwin;
  729         sc->sc_cur_regwin = rw;
  730         return 0;
  731 }
  732 
  733 static int
  734 bwi_regwin_select(struct bwi_softc *sc, int id)
  735 {
  736         uint32_t win = BWI_PCIM_REGWIN(id);
  737         int i;
  738 
  739 #define RETRY_MAX       50
  740         for (i = 0; i < RETRY_MAX; ++i) {
  741                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
  742                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
  743                         return 0;
  744                 DELAY(10);
  745         }
  746 #undef RETRY_MAX
  747 
  748         return ENXIO;
  749 }
  750 
  751 static void
  752 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
  753 {
  754         uint32_t val;
  755 
  756         val = CSR_READ_4(sc, BWI_ID_HI);
  757         *type = BWI_ID_HI_REGWIN_TYPE(val);
  758         *rev = BWI_ID_HI_REGWIN_REV(val);
  759 
  760         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
  761                 "vendor 0x%04x\n", *type, *rev,
  762                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
  763 }
  764 
  765 static int
  766 bwi_bbp_attach(struct bwi_softc *sc)
  767 {
  768         uint16_t bbp_id, rw_type;
  769         uint8_t rw_rev;
  770         uint32_t info;
  771         int error, nregwin, i;
  772 
  773         /*
  774          * Get 0th regwin information
  775          * NOTE: 0th regwin should exist
  776          */
  777         error = bwi_regwin_select(sc, 0);
  778         if (error) {
  779                 device_printf(sc->sc_dev, "can't select regwin 0\n");
  780                 return error;
  781         }
  782         bwi_regwin_info(sc, &rw_type, &rw_rev);
  783 
  784         /*
  785          * Find out BBP id
  786          */
  787         bbp_id = 0;
  788         info = 0;
  789         if (rw_type == BWI_REGWIN_T_COM) {
  790                 info = CSR_READ_4(sc, BWI_INFO);
  791                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
  792 
  793                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
  794 
  795                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
  796         } else {
  797                 for (i = 0; i < nitems(bwi_bbpid_map); ++i) {
  798                         if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
  799                             sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
  800                                 bbp_id = bwi_bbpid_map[i].bbp_id;
  801                                 break;
  802                         }
  803                 }
  804                 if (bbp_id == 0) {
  805                         device_printf(sc->sc_dev, "no BBP id for device id "
  806                                       "0x%04x\n", sc->sc_pci_did);
  807                         return ENXIO;
  808                 }
  809 
  810                 info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
  811                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
  812         }
  813 
  814         /*
  815          * Find out number of regwins
  816          */
  817         nregwin = 0;
  818         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
  819                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
  820         } else {
  821                 for (i = 0; i < nitems(bwi_regwin_count); ++i) {
  822                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
  823                                 nregwin = bwi_regwin_count[i].nregwin;
  824                                 break;
  825                         }
  826                 }
  827                 if (nregwin == 0) {
  828                         device_printf(sc->sc_dev, "no number of win for "
  829                                       "BBP id 0x%04x\n", bbp_id);
  830                         return ENXIO;
  831                 }
  832         }
  833 
  834         /* Record BBP id/rev for later using */
  835         sc->sc_bbp_id = bbp_id;
  836         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
  837         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
  838         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
  839                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
  840 
  841         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
  842                 nregwin, sc->sc_cap);
  843 
  844         /*
  845          * Create rest of the regwins
  846          */
  847 
  848         /* Don't re-create common regwin, if it is already created */
  849         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
  850 
  851         for (; i < nregwin; ++i) {
  852                 /*
  853                  * Get regwin information
  854                  */
  855                 error = bwi_regwin_select(sc, i);
  856                 if (error) {
  857                         device_printf(sc->sc_dev,
  858                                       "can't select regwin %d\n", i);
  859                         return error;
  860                 }
  861                 bwi_regwin_info(sc, &rw_type, &rw_rev);
  862 
  863                 /*
  864                  * Try attach:
  865                  * 1) Bus (PCI/PCIE) regwin
  866                  * 2) MAC regwin
  867                  * Ignore rest types of regwin
  868                  */
  869                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
  870                     rw_type == BWI_REGWIN_T_BUSPCIE) {
  871                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
  872                                 device_printf(sc->sc_dev,
  873                                               "bus regwin already exists\n");
  874                         } else {
  875                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
  876                                                   rw_type, rw_rev);
  877                         }
  878                 } else if (rw_type == BWI_REGWIN_T_MAC) {
  879                         /* XXX ignore return value */
  880                         bwi_mac_attach(sc, i, rw_rev);
  881                 }
  882         }
  883 
  884         /* At least one MAC shold exist */
  885         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
  886                 device_printf(sc->sc_dev, "no MAC was found\n");
  887                 return ENXIO;
  888         }
  889         KASSERT(sc->sc_nmac > 0, ("no mac's"));
  890 
  891         /* Bus regwin must exist */
  892         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
  893                 device_printf(sc->sc_dev, "no bus regwin was found\n");
  894                 return ENXIO;
  895         }
  896 
  897         /* Start with first MAC */
  898         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
  899         if (error)
  900                 return error;
  901 
  902         return 0;
  903 }
  904 
  905 int
  906 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
  907 {
  908         struct bwi_regwin *old, *bus;
  909         uint32_t val;
  910         int error;
  911 
  912         bus = &sc->sc_bus_regwin;
  913         KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
  914 
  915         /*
  916          * Tell bus to generate requested interrupts
  917          */
  918         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
  919                 /*
  920                  * NOTE: Read BWI_FLAGS from MAC regwin
  921                  */
  922                 val = CSR_READ_4(sc, BWI_FLAGS);
  923 
  924                 error = bwi_regwin_switch(sc, bus, &old);
  925                 if (error)
  926                         return error;
  927 
  928                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
  929         } else {
  930                 uint32_t mac_mask;
  931 
  932                 mac_mask = 1 << mac->mac_id;
  933 
  934                 error = bwi_regwin_switch(sc, bus, &old);
  935                 if (error)
  936                         return error;
  937 
  938                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
  939                 val |= mac_mask << 8;
  940                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
  941         }
  942 
  943         if (sc->sc_flags & BWI_F_BUS_INITED)
  944                 goto back;
  945 
  946         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
  947                 /*
  948                  * Enable prefetch and burst
  949                  */
  950                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
  951                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
  952 
  953                 if (bus->rw_rev < 5) {
  954                         struct bwi_regwin *com = &sc->sc_com_regwin;
  955 
  956                         /*
  957                          * Configure timeouts for bus operation
  958                          */
  959 
  960                         /*
  961                          * Set service timeout and request timeout
  962                          */
  963                         CSR_SETBITS_4(sc, BWI_CONF_LO,
  964                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
  965                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
  966 
  967                         /*
  968                          * If there is common regwin, we switch to that regwin
  969                          * and switch back to bus regwin once we have done.
  970                          */
  971                         if (BWI_REGWIN_EXIST(com)) {
  972                                 error = bwi_regwin_switch(sc, com, NULL);
  973                                 if (error)
  974                                         return error;
  975                         }
  976 
  977                         /* Let bus know what we have changed */
  978                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
  979                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
  980                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
  981                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
  982 
  983                         if (BWI_REGWIN_EXIST(com)) {
  984                                 error = bwi_regwin_switch(sc, bus, NULL);
  985                                 if (error)
  986                                         return error;
  987                         }
  988                 } else if (bus->rw_rev >= 11) {
  989                         /*
  990                          * Enable memory read multiple
  991                          */
  992                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
  993                 }
  994         } else {
  995                 /* TODO:PCIE */
  996         }
  997 
  998         sc->sc_flags |= BWI_F_BUS_INITED;
  999 back:
 1000         return bwi_regwin_switch(sc, old, NULL);
 1001 }
 1002 
 1003 static void
 1004 bwi_get_card_flags(struct bwi_softc *sc)
 1005 {
 1006 #define PCI_VENDOR_APPLE 0x106b
 1007 #define PCI_VENDOR_DELL  0x1028
 1008         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
 1009         if (sc->sc_card_flags == 0xffff)
 1010                 sc->sc_card_flags = 0;
 1011 
 1012         if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
 1013             sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
 1014             sc->sc_pci_revid == 0x74)
 1015                 sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
 1016 
 1017         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
 1018             sc->sc_pci_subdid == 0x4e && /* XXX */
 1019             sc->sc_pci_revid > 0x40)
 1020                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
 1021 
 1022         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
 1023 #undef PCI_VENDOR_DELL
 1024 #undef PCI_VENDOR_APPLE
 1025 }
 1026 
 1027 static void
 1028 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
 1029 {
 1030         int i;
 1031 
 1032         for (i = 0; i < 3; ++i) {
 1033                 *((uint16_t *)eaddr + i) =
 1034                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
 1035         }
 1036 }
 1037 
 1038 static void
 1039 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
 1040 {
 1041         struct bwi_regwin *com;
 1042         uint32_t val;
 1043         u_int div;
 1044         int src;
 1045 
 1046         bzero(freq, sizeof(*freq));
 1047         com = &sc->sc_com_regwin;
 1048 
 1049         KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
 1050         KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
 1051         KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
 1052 
 1053         /*
 1054          * Calculate clock frequency
 1055          */
 1056         src = -1;
 1057         div = 0;
 1058         if (com->rw_rev < 6) {
 1059                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 1060                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
 1061                         src = BWI_CLKSRC_PCI;
 1062                         div = 64;
 1063                 } else {
 1064                         src = BWI_CLKSRC_CS_OSC;
 1065                         div = 32;
 1066                 }
 1067         } else if (com->rw_rev < 10) {
 1068                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
 1069 
 1070                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
 1071                 if (src == BWI_CLKSRC_LP_OSC) {
 1072                         div = 1;
 1073                 } else {
 1074                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
 1075 
 1076                         /* Unknown source */
 1077                         if (src >= BWI_CLKSRC_MAX)
 1078                                 src = BWI_CLKSRC_CS_OSC;
 1079                 }
 1080         } else {
 1081                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
 1082 
 1083                 src = BWI_CLKSRC_CS_OSC;
 1084                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
 1085         }
 1086 
 1087         KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
 1088         KASSERT(div != 0, ("div zero"));
 1089 
 1090         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
 1091                 src == BWI_CLKSRC_PCI ? "PCI" :
 1092                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
 1093 
 1094         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
 1095         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
 1096 
 1097         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
 1098                 freq->clkfreq_min, freq->clkfreq_max);
 1099 }
 1100 
 1101 static int
 1102 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
 1103 {
 1104         struct bwi_regwin *old, *com;
 1105         uint32_t clk_ctrl, clk_src;
 1106         int error, pwr_off = 0;
 1107 
 1108         com = &sc->sc_com_regwin;
 1109         if (!BWI_REGWIN_EXIST(com))
 1110                 return 0;
 1111 
 1112         if (com->rw_rev >= 10 || com->rw_rev < 6)
 1113                 return 0;
 1114 
 1115         /*
 1116          * For common regwin whose rev is [6, 10), the chip
 1117          * must be capable to change clock mode.
 1118          */
 1119         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
 1120                 return 0;
 1121 
 1122         error = bwi_regwin_switch(sc, com, &old);
 1123         if (error)
 1124                 return error;
 1125 
 1126         if (clk_mode == BWI_CLOCK_MODE_FAST)
 1127                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
 1128 
 1129         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
 1130         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
 1131 
 1132         switch (clk_mode) {
 1133         case BWI_CLOCK_MODE_FAST:
 1134                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
 1135                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
 1136                 break;
 1137         case BWI_CLOCK_MODE_SLOW:
 1138                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
 1139                 break;
 1140         case BWI_CLOCK_MODE_DYN:
 1141                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
 1142                               BWI_CLOCK_CTRL_IGNPLL |
 1143                               BWI_CLOCK_CTRL_NODYN);
 1144                 if (clk_src != BWI_CLKSRC_CS_OSC) {
 1145                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
 1146                         pwr_off = 1;
 1147                 }
 1148                 break;
 1149         }
 1150         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
 1151 
 1152         if (pwr_off)
 1153                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
 1154 
 1155         return bwi_regwin_switch(sc, old, NULL);
 1156 }
 1157 
 1158 static int
 1159 bwi_set_clock_delay(struct bwi_softc *sc)
 1160 {
 1161         struct bwi_regwin *old, *com;
 1162         int error;
 1163 
 1164         com = &sc->sc_com_regwin;
 1165         if (!BWI_REGWIN_EXIST(com))
 1166                 return 0;
 1167 
 1168         error = bwi_regwin_switch(sc, com, &old);
 1169         if (error)
 1170                 return error;
 1171 
 1172         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
 1173                 if (sc->sc_bbp_rev == 0)
 1174                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
 1175                 else if (sc->sc_bbp_rev == 1)
 1176                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
 1177         }
 1178 
 1179         if (sc->sc_cap & BWI_CAP_CLKMODE) {
 1180                 if (com->rw_rev >= 10) {
 1181                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
 1182                 } else {
 1183                         struct bwi_clock_freq freq;
 1184 
 1185                         bwi_get_clock_freq(sc, &freq);
 1186                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
 1187                                 howmany(freq.clkfreq_max * 150, 1000000));
 1188                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
 1189                                 howmany(freq.clkfreq_max * 15, 1000000));
 1190                 }
 1191         }
 1192 
 1193         return bwi_regwin_switch(sc, old, NULL);
 1194 }
 1195 
 1196 static void
 1197 bwi_init(struct bwi_softc *sc)
 1198 {
 1199         struct ieee80211com *ic = &sc->sc_ic;
 1200 
 1201         BWI_LOCK(sc);
 1202         bwi_init_statechg(sc, 1);
 1203         BWI_UNLOCK(sc);
 1204 
 1205         if (sc->sc_flags & BWI_F_RUNNING)
 1206                 ieee80211_start_all(ic);                /* start all vap's */
 1207 }
 1208 
 1209 static void
 1210 bwi_init_statechg(struct bwi_softc *sc, int statechg)
 1211 {
 1212         struct bwi_mac *mac;
 1213         int error;
 1214 
 1215         BWI_ASSERT_LOCKED(sc);
 1216 
 1217         bwi_stop_locked(sc, statechg);
 1218 
 1219         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 1220 
 1221         /* TODO: 2 MAC */
 1222 
 1223         mac = &sc->sc_mac[0];
 1224         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
 1225         if (error) {
 1226                 device_printf(sc->sc_dev, "%s: error %d on regwin switch\n",
 1227                     __func__, error);
 1228                 goto bad;
 1229         }
 1230         error = bwi_mac_init(mac);
 1231         if (error) {
 1232                 device_printf(sc->sc_dev, "%s: error %d on MAC init\n",
 1233                     __func__, error);
 1234                 goto bad;
 1235         }
 1236 
 1237         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
 1238 
 1239         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
 1240         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, sc->sc_ic.ic_macaddr);
 1241 
 1242         bwi_mac_reset_hwkeys(mac);
 1243 
 1244         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
 1245                 int i;
 1246 
 1247 #define NRETRY  1000
 1248                 /*
 1249                  * Drain any possible pending TX status
 1250                  */
 1251                 for (i = 0; i < NRETRY; ++i) {
 1252                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
 1253                              BWI_TXSTATUS0_VALID) == 0)
 1254                                 break;
 1255                         CSR_READ_4(sc, BWI_TXSTATUS1);
 1256                 }
 1257                 if (i == NRETRY)
 1258                         device_printf(sc->sc_dev,
 1259                             "%s: can't drain TX status\n", __func__);
 1260 #undef NRETRY
 1261         }
 1262 
 1263         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
 1264                 bwi_mac_updateslot(mac, 1);
 1265 
 1266         /* Start MAC */
 1267         error = bwi_mac_start(mac);
 1268         if (error) {
 1269                 device_printf(sc->sc_dev, "%s: error %d starting MAC\n",
 1270                     __func__, error);
 1271                 goto bad;
 1272         }
 1273 
 1274         /* Clear stop flag before enabling interrupt */
 1275         sc->sc_flags &= ~BWI_F_STOP;
 1276         sc->sc_flags |= BWI_F_RUNNING;
 1277         callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
 1278 
 1279         /* Enable intrs */
 1280         bwi_enable_intrs(sc, BWI_INIT_INTRS);
 1281         return;
 1282 bad:
 1283         bwi_stop_locked(sc, 1);
 1284 }
 1285 
 1286 static void
 1287 bwi_parent(struct ieee80211com *ic)
 1288 {
 1289         struct bwi_softc *sc = ic->ic_softc;
 1290         int startall = 0;
 1291 
 1292         BWI_LOCK(sc);
 1293         if (ic->ic_nrunning > 0) {
 1294                 struct bwi_mac *mac;
 1295                 int promisc = -1;
 1296 
 1297                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1298                     ("current regwin type %d",
 1299                     sc->sc_cur_regwin->rw_type));
 1300                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1301 
 1302                 if (ic->ic_promisc > 0 && (sc->sc_flags & BWI_F_PROMISC) == 0) {
 1303                         promisc = 1;
 1304                         sc->sc_flags |= BWI_F_PROMISC;
 1305                 } else if (ic->ic_promisc == 0 &&
 1306                     (sc->sc_flags & BWI_F_PROMISC) != 0) {
 1307                         promisc = 0;
 1308                         sc->sc_flags &= ~BWI_F_PROMISC;
 1309                 }
 1310 
 1311                 if (promisc >= 0)
 1312                         bwi_mac_set_promisc(mac, promisc);
 1313         }
 1314         if (ic->ic_nrunning > 0) {
 1315                 if ((sc->sc_flags & BWI_F_RUNNING) == 0) {
 1316                         bwi_init_statechg(sc, 1);
 1317                         startall = 1;
 1318                 }
 1319         } else if (sc->sc_flags & BWI_F_RUNNING)
 1320                 bwi_stop_locked(sc, 1);
 1321         BWI_UNLOCK(sc);
 1322         if (startall)
 1323                 ieee80211_start_all(ic);
 1324 }
 1325 
 1326 static int
 1327 bwi_transmit(struct ieee80211com *ic, struct mbuf *m)
 1328 {
 1329         struct bwi_softc *sc = ic->ic_softc;
 1330         int error;
 1331 
 1332         BWI_LOCK(sc);
 1333         if ((sc->sc_flags & BWI_F_RUNNING) == 0) {
 1334                 BWI_UNLOCK(sc);
 1335                 return (ENXIO);
 1336         }
 1337         error = mbufq_enqueue(&sc->sc_snd, m);
 1338         if (error) {
 1339                 BWI_UNLOCK(sc);
 1340                 return (error);
 1341         }
 1342         bwi_start_locked(sc);
 1343         BWI_UNLOCK(sc);
 1344         return (0);
 1345 }
 1346 
 1347 static void
 1348 bwi_start_locked(struct bwi_softc *sc)
 1349 {
 1350         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 1351         struct ieee80211_frame *wh;
 1352         struct ieee80211_node *ni;
 1353         struct mbuf *m;
 1354         int trans, idx;
 1355 
 1356         BWI_ASSERT_LOCKED(sc);
 1357 
 1358         trans = 0;
 1359         idx = tbd->tbd_idx;
 1360 
 1361         while (tbd->tbd_buf[idx].tb_mbuf == NULL &&
 1362             tbd->tbd_used + BWI_TX_NSPRDESC < BWI_TX_NDESC &&
 1363             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
 1364                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
 1365                 wh = mtod(m, struct ieee80211_frame *);
 1366                 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) != 0 &&
 1367                     ieee80211_crypto_encap(ni, m) == NULL) {
 1368                         if_inc_counter(ni->ni_vap->iv_ifp,
 1369                             IFCOUNTER_OERRORS, 1);
 1370                         ieee80211_free_node(ni);
 1371                         m_freem(m);
 1372                         continue;
 1373                 }
 1374                 if (bwi_encap(sc, idx, m, ni) != 0) {
 1375                         /* 'm' is freed in bwi_encap() if we reach here */
 1376                         if (ni != NULL) {
 1377                                 if_inc_counter(ni->ni_vap->iv_ifp,
 1378                                     IFCOUNTER_OERRORS, 1);
 1379                                 ieee80211_free_node(ni);
 1380                         } else
 1381                                 counter_u64_add(sc->sc_ic.ic_oerrors, 1);
 1382                         continue;
 1383                 }
 1384                 trans = 1;
 1385                 tbd->tbd_used++;
 1386                 idx = (idx + 1) % BWI_TX_NDESC;
 1387         }
 1388 
 1389         tbd->tbd_idx = idx;
 1390         if (trans)
 1391                 sc->sc_tx_timer = 5;
 1392 }
 1393 
 1394 static int
 1395 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 1396         const struct ieee80211_bpf_params *params)
 1397 {
 1398         struct ieee80211com *ic = ni->ni_ic;
 1399         struct bwi_softc *sc = ic->ic_softc;
 1400         /* XXX wme? */
 1401         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 1402         int idx, error;
 1403 
 1404         if ((sc->sc_flags & BWI_F_RUNNING) == 0) {
 1405                 m_freem(m);
 1406                 return ENETDOWN;
 1407         }
 1408 
 1409         BWI_LOCK(sc);
 1410         idx = tbd->tbd_idx;
 1411         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
 1412         if (params == NULL) {
 1413                 /*
 1414                  * Legacy path; interpret frame contents to decide
 1415                  * precisely how to send the frame.
 1416                  */
 1417                 error = bwi_encap(sc, idx, m, ni);
 1418         } else {
 1419                 /*
 1420                  * Caller supplied explicit parameters to use in
 1421                  * sending the frame.
 1422                  */
 1423                 error = bwi_encap_raw(sc, idx, m, ni, params);
 1424         }
 1425         if (error == 0) {
 1426                 tbd->tbd_used++;
 1427                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
 1428                 sc->sc_tx_timer = 5;
 1429         }
 1430         BWI_UNLOCK(sc);
 1431         return error;
 1432 }
 1433 
 1434 static void
 1435 bwi_watchdog(void *arg)
 1436 {
 1437         struct bwi_softc *sc;
 1438 
 1439         sc = arg;
 1440         BWI_ASSERT_LOCKED(sc);
 1441         if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) {
 1442                 device_printf(sc->sc_dev, "watchdog timeout\n");
 1443                 counter_u64_add(sc->sc_ic.ic_oerrors, 1);
 1444                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
 1445         }
 1446         callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
 1447 }
 1448 
 1449 static void
 1450 bwi_stop(struct bwi_softc *sc, int statechg)
 1451 {
 1452         BWI_LOCK(sc);
 1453         bwi_stop_locked(sc, statechg);
 1454         BWI_UNLOCK(sc);
 1455 }
 1456 
 1457 static void
 1458 bwi_stop_locked(struct bwi_softc *sc, int statechg)
 1459 {
 1460         struct bwi_mac *mac;
 1461         int i, error, pwr_off = 0;
 1462 
 1463         BWI_ASSERT_LOCKED(sc);
 1464 
 1465         callout_stop(&sc->sc_calib_ch);
 1466         callout_stop(&sc->sc_led_blink_ch);
 1467         sc->sc_led_blinking = 0;
 1468         sc->sc_flags |= BWI_F_STOP;
 1469 
 1470         if (sc->sc_flags & BWI_F_RUNNING) {
 1471                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1472                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1473                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1474 
 1475                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
 1476                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
 1477                 bwi_mac_stop(mac);
 1478         }
 1479 
 1480         for (i = 0; i < sc->sc_nmac; ++i) {
 1481                 struct bwi_regwin *old_rw;
 1482 
 1483                 mac = &sc->sc_mac[i];
 1484                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
 1485                         continue;
 1486 
 1487                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
 1488                 if (error)
 1489                         continue;
 1490 
 1491                 bwi_mac_shutdown(mac);
 1492                 pwr_off = 1;
 1493 
 1494                 bwi_regwin_switch(sc, old_rw, NULL);
 1495         }
 1496 
 1497         if (pwr_off)
 1498                 bwi_bbp_power_off(sc);
 1499 
 1500         sc->sc_tx_timer = 0;
 1501         callout_stop(&sc->sc_watchdog_timer);
 1502         sc->sc_flags &= ~BWI_F_RUNNING;
 1503 }
 1504 
 1505 void
 1506 bwi_intr(void *xsc)
 1507 {
 1508         struct bwi_softc *sc = xsc;
 1509         struct bwi_mac *mac;
 1510         uint32_t intr_status;
 1511         uint32_t txrx_intr_status[BWI_TXRX_NRING];
 1512         int i, txrx_error, tx = 0, rx_data = -1;
 1513 
 1514         BWI_LOCK(sc);
 1515 
 1516         if ((sc->sc_flags & BWI_F_RUNNING) == 0 ||
 1517             (sc->sc_flags & BWI_F_STOP)) {
 1518                 BWI_UNLOCK(sc);
 1519                 return;
 1520         }
 1521         /*
 1522          * Get interrupt status
 1523          */
 1524         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
 1525         if (intr_status == 0xffffffff) {        /* Not for us */
 1526                 BWI_UNLOCK(sc);
 1527                 return;
 1528         }
 1529 
 1530         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
 1531 
 1532         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
 1533         if (intr_status == 0) {         /* Nothing is interesting */
 1534                 BWI_UNLOCK(sc);
 1535                 return;
 1536         }
 1537 
 1538         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1539             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1540         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1541 
 1542         txrx_error = 0;
 1543         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
 1544         for (i = 0; i < BWI_TXRX_NRING; ++i) {
 1545                 uint32_t mask;
 1546 
 1547                 if (BWI_TXRX_IS_RX(i))
 1548                         mask = BWI_TXRX_RX_INTRS;
 1549                 else
 1550                         mask = BWI_TXRX_TX_INTRS;
 1551 
 1552                 txrx_intr_status[i] =
 1553                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
 1554 
 1555                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
 1556                          i, txrx_intr_status[i]);
 1557 
 1558                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
 1559                         device_printf(sc->sc_dev,
 1560                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
 1561                             __func__, i, txrx_intr_status[i]);
 1562                         txrx_error = 1;
 1563                 }
 1564         }
 1565         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
 1566 
 1567         /*
 1568          * Acknowledge interrupt
 1569          */
 1570         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
 1571 
 1572         for (i = 0; i < BWI_TXRX_NRING; ++i)
 1573                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
 1574 
 1575         /* Disable all interrupts */
 1576         bwi_disable_intrs(sc, BWI_ALL_INTRS);
 1577 
 1578         /*
 1579          * http://bcm-specs.sipsolutions.net/Interrupts
 1580          * Says for this bit (0x800):
 1581          * "Fatal Error
 1582          *
 1583          * We got this one while testing things when by accident the
 1584          * template ram wasn't set to big endian when it should have
 1585          * been after writing the initial values. It keeps on being
 1586          * triggered, the only way to stop it seems to shut down the
 1587          * chip."
 1588          *
 1589          * Suggesting that we should never get it and if we do we're not
 1590          * feeding TX packets into the MAC correctly if we do...  Apparently,
 1591          * it is valid only on mac version 5 and higher, but I couldn't
 1592          * find a reference for that...  Since I see them from time to time
 1593          * on my card, this suggests an error in the tx path still...
 1594          */
 1595         if (intr_status & BWI_INTR_PHY_TXERR) {
 1596                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
 1597                         device_printf(sc->sc_dev, "%s: intr PHY TX error\n",
 1598                             __func__);
 1599                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
 1600                         BWI_UNLOCK(sc);
 1601                         return;
 1602                 }
 1603         }
 1604 
 1605         if (txrx_error) {
 1606                 /* TODO: reset device */
 1607         }
 1608 
 1609         if (intr_status & BWI_INTR_TBTT)
 1610                 bwi_mac_config_ps(mac);
 1611 
 1612         if (intr_status & BWI_INTR_EO_ATIM)
 1613                 device_printf(sc->sc_dev, "EO_ATIM\n");
 1614 
 1615         if (intr_status & BWI_INTR_PMQ) {
 1616                 for (;;) {
 1617                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
 1618                                 break;
 1619                 }
 1620                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
 1621         }
 1622 
 1623         if (intr_status & BWI_INTR_NOISE)
 1624                 device_printf(sc->sc_dev, "intr noise\n");
 1625 
 1626         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
 1627                 rx_data = sc->sc_rxeof(sc);
 1628                 if (sc->sc_flags & BWI_F_STOP) {
 1629                         BWI_UNLOCK(sc);
 1630                         return;
 1631                 }
 1632         }
 1633 
 1634         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
 1635                 sc->sc_txeof_status(sc);
 1636                 tx = 1;
 1637         }
 1638 
 1639         if (intr_status & BWI_INTR_TX_DONE) {
 1640                 bwi_txeof(sc);
 1641                 tx = 1;
 1642         }
 1643 
 1644         /* Re-enable interrupts */
 1645         bwi_enable_intrs(sc, BWI_INIT_INTRS);
 1646 
 1647         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
 1648                 int evt = BWI_LED_EVENT_NONE;
 1649 
 1650                 if (tx && rx_data > 0) {
 1651                         if (sc->sc_rx_rate > sc->sc_tx_rate)
 1652                                 evt = BWI_LED_EVENT_RX;
 1653                         else
 1654                                 evt = BWI_LED_EVENT_TX;
 1655                 } else if (tx) {
 1656                         evt = BWI_LED_EVENT_TX;
 1657                 } else if (rx_data > 0) {
 1658                         evt = BWI_LED_EVENT_RX;
 1659                 } else if (rx_data == 0) {
 1660                         evt = BWI_LED_EVENT_POLL;
 1661                 }
 1662 
 1663                 if (evt != BWI_LED_EVENT_NONE)
 1664                         bwi_led_event(sc, evt);
 1665         }
 1666 
 1667         BWI_UNLOCK(sc);
 1668 }
 1669 
 1670 static void
 1671 bwi_scan_start(struct ieee80211com *ic)
 1672 {
 1673         struct bwi_softc *sc = ic->ic_softc;
 1674 
 1675         BWI_LOCK(sc);
 1676         /* Enable MAC beacon promiscuity */
 1677         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
 1678         BWI_UNLOCK(sc);
 1679 }
 1680 
 1681 static void
 1682 bwi_getradiocaps(struct ieee80211com *ic,
 1683     int maxchans, int *nchans, struct ieee80211_channel chans[])
 1684 {
 1685         struct bwi_softc *sc = ic->ic_softc;
 1686         struct bwi_mac *mac;
 1687         struct bwi_phy *phy;
 1688         uint8_t bands[IEEE80211_MODE_BYTES];
 1689 
 1690         /*
 1691          * XXX First MAC is known to exist
 1692          * TODO2
 1693          */
 1694         mac = &sc->sc_mac[0];
 1695         phy = &mac->mac_phy;
 1696 
 1697         memset(bands, 0, sizeof(bands));
 1698         switch (phy->phy_mode) {
 1699         case IEEE80211_MODE_11G:
 1700                 setbit(bands, IEEE80211_MODE_11G);
 1701                 /* FALLTHROUGH */
 1702         case IEEE80211_MODE_11B:
 1703                 setbit(bands, IEEE80211_MODE_11B);
 1704                 break;
 1705         case IEEE80211_MODE_11A:
 1706                 /* TODO:11A */
 1707                 setbit(bands, IEEE80211_MODE_11A);
 1708                 device_printf(sc->sc_dev, "no 11a support\n");
 1709                 return;
 1710         default:
 1711                 panic("unknown phymode %d\n", phy->phy_mode);
 1712         }
 1713 
 1714         ieee80211_add_channel_list_2ghz(chans, maxchans, nchans,
 1715             bwi_chan_2ghz, nitems(bwi_chan_2ghz), bands, 0);
 1716 }
 1717 
 1718 static void
 1719 bwi_set_channel(struct ieee80211com *ic)
 1720 {
 1721         struct bwi_softc *sc = ic->ic_softc;
 1722         struct ieee80211_channel *c = ic->ic_curchan;
 1723         struct bwi_mac *mac;
 1724 
 1725         BWI_LOCK(sc);
 1726         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1727             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1728         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1729         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
 1730 
 1731         sc->sc_rates = ieee80211_get_ratetable(c);
 1732 
 1733         /*
 1734          * Setup radio tap channel freq and flags
 1735          */
 1736         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
 1737                 htole16(c->ic_freq);
 1738         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
 1739                 htole16(c->ic_flags & 0xffff);
 1740 
 1741         BWI_UNLOCK(sc);
 1742 }
 1743 
 1744 static void
 1745 bwi_scan_end(struct ieee80211com *ic)
 1746 {
 1747         struct bwi_softc *sc = ic->ic_softc;
 1748 
 1749         BWI_LOCK(sc);
 1750         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
 1751         BWI_UNLOCK(sc);
 1752 }
 1753 
 1754 static int
 1755 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 1756 {
 1757         struct bwi_vap *bvp = BWI_VAP(vap);
 1758         struct ieee80211com *ic= vap->iv_ic;
 1759         struct bwi_softc *sc = ic->ic_softc;
 1760         enum ieee80211_state ostate = vap->iv_state;
 1761         struct bwi_mac *mac;
 1762         int error;
 1763 
 1764         BWI_LOCK(sc);
 1765 
 1766         callout_stop(&sc->sc_calib_ch);
 1767 
 1768         if (nstate == IEEE80211_S_INIT)
 1769                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
 1770 
 1771         bwi_led_newstate(sc, nstate);
 1772 
 1773         error = bvp->bv_newstate(vap, nstate, arg);
 1774         if (error != 0)
 1775                 goto back;
 1776 
 1777         /*
 1778          * Clear the BSSID when we stop a STA
 1779          */
 1780         if (vap->iv_opmode == IEEE80211_M_STA) {
 1781                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
 1782                         /*
 1783                          * Clear out the BSSID.  If we reassociate to
 1784                          * the same AP, this will reinialize things
 1785                          * correctly...
 1786                          */
 1787                         if (ic->ic_opmode == IEEE80211_M_STA && 
 1788                             !(sc->sc_flags & BWI_F_STOP))
 1789                                 bwi_set_bssid(sc, bwi_zero_addr);
 1790                 }
 1791         }
 1792 
 1793         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 1794                 /* Nothing to do */
 1795         } else if (nstate == IEEE80211_S_RUN) {
 1796                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
 1797 
 1798                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 1799                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 1800                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 1801 
 1802                 /* Initial TX power calibration */
 1803                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
 1804 #ifdef notyet
 1805                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
 1806 #else
 1807                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
 1808 #endif
 1809 
 1810                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
 1811         }
 1812 back:
 1813         BWI_UNLOCK(sc);
 1814 
 1815         return error;
 1816 }
 1817 
 1818 static int
 1819 bwi_media_change(struct ifnet *ifp)
 1820 {
 1821         int error = ieee80211_media_change(ifp);
 1822         /* NB: only the fixed rate can change and that doesn't need a reset */
 1823         return (error == ENETRESET ? 0 : error);
 1824 }
 1825 
 1826 static int
 1827 bwi_dma_alloc(struct bwi_softc *sc)
 1828 {
 1829         int error, i, has_txstats;
 1830         bus_addr_t lowaddr = 0;
 1831         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
 1832         uint32_t txrx_ctrl_step = 0;
 1833 
 1834         has_txstats = 0;
 1835         for (i = 0; i < sc->sc_nmac; ++i) {
 1836                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
 1837                         has_txstats = 1;
 1838                         break;
 1839                 }
 1840         }
 1841 
 1842         switch (sc->sc_bus_space) {
 1843         case BWI_BUS_SPACE_30BIT:
 1844         case BWI_BUS_SPACE_32BIT:
 1845                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
 1846                         lowaddr = BWI_BUS_SPACE_MAXADDR;
 1847                 else
 1848                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
 1849                 desc_sz = sizeof(struct bwi_desc32);
 1850                 txrx_ctrl_step = 0x20;
 1851 
 1852                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
 1853                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
 1854                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
 1855                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
 1856                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
 1857                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
 1858                 sc->sc_rxeof = bwi_rxeof32;
 1859                 sc->sc_start_tx = bwi_start_tx32;
 1860                 if (has_txstats) {
 1861                         sc->sc_init_txstats = bwi_init_txstats32;
 1862                         sc->sc_free_txstats = bwi_free_txstats32;
 1863                         sc->sc_txeof_status = bwi_txeof_status32;
 1864                 }
 1865                 break;
 1866 
 1867         case BWI_BUS_SPACE_64BIT:
 1868                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
 1869                 desc_sz = sizeof(struct bwi_desc64);
 1870                 txrx_ctrl_step = 0x40;
 1871 
 1872                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
 1873                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
 1874                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
 1875                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
 1876                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
 1877                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
 1878                 sc->sc_rxeof = bwi_rxeof64;
 1879                 sc->sc_start_tx = bwi_start_tx64;
 1880                 if (has_txstats) {
 1881                         sc->sc_init_txstats = bwi_init_txstats64;
 1882                         sc->sc_free_txstats = bwi_free_txstats64;
 1883                         sc->sc_txeof_status = bwi_txeof_status64;
 1884                 }
 1885                 break;
 1886         }
 1887 
 1888         KASSERT(lowaddr != 0, ("lowaddr zero"));
 1889         KASSERT(desc_sz != 0, ("desc_sz zero"));
 1890         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
 1891 
 1892         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
 1893         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
 1894 
 1895         /*
 1896          * Create top level DMA tag
 1897          */
 1898         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
 1899                                BWI_ALIGN, 0,            /* alignment, bounds */
 1900                                lowaddr,                 /* lowaddr */
 1901                                BUS_SPACE_MAXADDR,       /* highaddr */
 1902                                NULL, NULL,              /* filter, filterarg */
 1903                                BUS_SPACE_MAXSIZE,       /* maxsize */
 1904                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
 1905                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
 1906                                0,                       /* flags */
 1907                                NULL, NULL,              /* lockfunc, lockarg */
 1908                                &sc->sc_parent_dtag);
 1909         if (error) {
 1910                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
 1911                 return error;
 1912         }
 1913 
 1914 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
 1915 
 1916         /*
 1917          * Create TX ring DMA stuffs
 1918          */
 1919         error = bus_dma_tag_create(sc->sc_parent_dtag,
 1920                                 BWI_RING_ALIGN, 0,
 1921                                 BUS_SPACE_MAXADDR,
 1922                                 BUS_SPACE_MAXADDR,
 1923                                 NULL, NULL,
 1924                                 tx_ring_sz,
 1925                                 1,
 1926                                 tx_ring_sz,
 1927                                 0,
 1928                                 NULL, NULL,
 1929                                 &sc->sc_txring_dtag);
 1930         if (error) {
 1931                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
 1932                 return error;
 1933         }
 1934 
 1935         for (i = 0; i < BWI_TX_NRING; ++i) {
 1936                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
 1937                                            &sc->sc_tx_rdata[i], tx_ring_sz,
 1938                                            TXRX_CTRL(i));
 1939                 if (error) {
 1940                         device_printf(sc->sc_dev, "%dth TX ring "
 1941                                       "DMA alloc failed\n", i);
 1942                         return error;
 1943                 }
 1944         }
 1945 
 1946         /*
 1947          * Create RX ring DMA stuffs
 1948          */
 1949         error = bus_dma_tag_create(sc->sc_parent_dtag,
 1950                                 BWI_RING_ALIGN, 0,
 1951                                 BUS_SPACE_MAXADDR,
 1952                                 BUS_SPACE_MAXADDR,
 1953                                 NULL, NULL,
 1954                                 rx_ring_sz,
 1955                                 1,
 1956                                 rx_ring_sz,
 1957                                 0,
 1958                                 NULL, NULL,
 1959                                 &sc->sc_rxring_dtag);
 1960         if (error) {
 1961                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
 1962                 return error;
 1963         }
 1964 
 1965         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
 1966                                    rx_ring_sz, TXRX_CTRL(0));
 1967         if (error) {
 1968                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
 1969                 return error;
 1970         }
 1971 
 1972         if (has_txstats) {
 1973                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
 1974                 if (error) {
 1975                         device_printf(sc->sc_dev,
 1976                                       "TX stats DMA alloc failed\n");
 1977                         return error;
 1978                 }
 1979         }
 1980 
 1981 #undef TXRX_CTRL
 1982 
 1983         return bwi_dma_mbuf_create(sc);
 1984 }
 1985 
 1986 static void
 1987 bwi_dma_free(struct bwi_softc *sc)
 1988 {
 1989         if (sc->sc_txring_dtag != NULL) {
 1990                 int i;
 1991 
 1992                 for (i = 0; i < BWI_TX_NRING; ++i) {
 1993                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
 1994 
 1995                         if (rd->rdata_desc != NULL) {
 1996                                 bus_dmamap_unload(sc->sc_txring_dtag,
 1997                                                   rd->rdata_dmap);
 1998                                 bus_dmamem_free(sc->sc_txring_dtag,
 1999                                                 rd->rdata_desc,
 2000                                                 rd->rdata_dmap);
 2001                         }
 2002                 }
 2003                 bus_dma_tag_destroy(sc->sc_txring_dtag);
 2004         }
 2005 
 2006         if (sc->sc_rxring_dtag != NULL) {
 2007                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2008 
 2009                 if (rd->rdata_desc != NULL) {
 2010                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
 2011                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
 2012                                         rd->rdata_dmap);
 2013                 }
 2014                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
 2015         }
 2016 
 2017         bwi_dma_txstats_free(sc);
 2018         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
 2019 
 2020         if (sc->sc_parent_dtag != NULL)
 2021                 bus_dma_tag_destroy(sc->sc_parent_dtag);
 2022 }
 2023 
 2024 static int
 2025 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
 2026                    struct bwi_ring_data *rd, bus_size_t size,
 2027                    uint32_t txrx_ctrl)
 2028 {
 2029         int error;
 2030 
 2031         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
 2032                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
 2033                                  &rd->rdata_dmap);
 2034         if (error) {
 2035                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
 2036                 return error;
 2037         }
 2038 
 2039         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
 2040                                 bwi_dma_ring_addr, &rd->rdata_paddr,
 2041                                 BUS_DMA_NOWAIT);
 2042         if (error) {
 2043                 device_printf(sc->sc_dev, "can't load DMA mem\n");
 2044                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
 2045                 rd->rdata_desc = NULL;
 2046                 return error;
 2047         }
 2048 
 2049         rd->rdata_txrx_ctrl = txrx_ctrl;
 2050         return 0;
 2051 }
 2052 
 2053 static int
 2054 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
 2055                       bus_size_t desc_sz)
 2056 {
 2057         struct bwi_txstats_data *st;
 2058         bus_size_t dma_size;
 2059         int error;
 2060 
 2061         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
 2062         if (st == NULL) {
 2063                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
 2064                 return ENOMEM;
 2065         }
 2066         sc->sc_txstats = st;
 2067 
 2068         /*
 2069          * Create TX stats descriptor DMA stuffs
 2070          */
 2071         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
 2072 
 2073         error = bus_dma_tag_create(sc->sc_parent_dtag,
 2074                                 BWI_RING_ALIGN,
 2075                                 0,
 2076                                 BUS_SPACE_MAXADDR,
 2077                                 BUS_SPACE_MAXADDR,
 2078                                 NULL, NULL,
 2079                                 dma_size,
 2080                                 1,
 2081                                 dma_size,
 2082                                 0,
 2083                                 NULL, NULL,
 2084                                 &st->stats_ring_dtag);
 2085         if (error) {
 2086                 device_printf(sc->sc_dev, "can't create txstats ring "
 2087                               "DMA tag\n");
 2088                 return error;
 2089         }
 2090 
 2091         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
 2092                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
 2093                                  &st->stats_ring_dmap);
 2094         if (error) {
 2095                 device_printf(sc->sc_dev, "can't allocate txstats ring "
 2096                               "DMA mem\n");
 2097                 bus_dma_tag_destroy(st->stats_ring_dtag);
 2098                 st->stats_ring_dtag = NULL;
 2099                 return error;
 2100         }
 2101 
 2102         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
 2103                                 st->stats_ring, dma_size,
 2104                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
 2105                                 BUS_DMA_NOWAIT);
 2106         if (error) {
 2107                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
 2108                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
 2109                                 st->stats_ring_dmap);
 2110                 bus_dma_tag_destroy(st->stats_ring_dtag);
 2111                 st->stats_ring_dtag = NULL;
 2112                 return error;
 2113         }
 2114 
 2115         /*
 2116          * Create TX stats DMA stuffs
 2117          */
 2118         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
 2119                            BWI_ALIGN);
 2120 
 2121         error = bus_dma_tag_create(sc->sc_parent_dtag,
 2122                                 BWI_ALIGN,
 2123                                 0,
 2124                                 BUS_SPACE_MAXADDR,
 2125                                 BUS_SPACE_MAXADDR,
 2126                                 NULL, NULL,
 2127                                 dma_size,
 2128                                 1,
 2129                                 dma_size,
 2130                                 0,
 2131                                 NULL, NULL,
 2132                                 &st->stats_dtag);
 2133         if (error) {
 2134                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
 2135                 return error;
 2136         }
 2137 
 2138         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
 2139                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
 2140                                  &st->stats_dmap);
 2141         if (error) {
 2142                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
 2143                 bus_dma_tag_destroy(st->stats_dtag);
 2144                 st->stats_dtag = NULL;
 2145                 return error;
 2146         }
 2147 
 2148         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
 2149                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
 2150                                 BUS_DMA_NOWAIT);
 2151         if (error) {
 2152                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
 2153                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
 2154                 bus_dma_tag_destroy(st->stats_dtag);
 2155                 st->stats_dtag = NULL;
 2156                 return error;
 2157         }
 2158 
 2159         st->stats_ctrl_base = ctrl_base;
 2160         return 0;
 2161 }
 2162 
 2163 static void
 2164 bwi_dma_txstats_free(struct bwi_softc *sc)
 2165 {
 2166         struct bwi_txstats_data *st;
 2167 
 2168         if (sc->sc_txstats == NULL)
 2169                 return;
 2170         st = sc->sc_txstats;
 2171 
 2172         if (st->stats_ring_dtag != NULL) {
 2173                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
 2174                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
 2175                                 st->stats_ring_dmap);
 2176                 bus_dma_tag_destroy(st->stats_ring_dtag);
 2177         }
 2178 
 2179         if (st->stats_dtag != NULL) {
 2180                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
 2181                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
 2182                 bus_dma_tag_destroy(st->stats_dtag);
 2183         }
 2184 
 2185         free(st, M_DEVBUF);
 2186 }
 2187 
 2188 static void
 2189 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
 2190 {
 2191         KASSERT(nseg == 1, ("too many segments\n"));
 2192         *((bus_addr_t *)arg) = seg->ds_addr;
 2193 }
 2194 
 2195 static int
 2196 bwi_dma_mbuf_create(struct bwi_softc *sc)
 2197 {
 2198         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2199         int i, j, k, ntx, error;
 2200 
 2201         /*
 2202          * Create TX/RX mbuf DMA tag
 2203          */
 2204         error = bus_dma_tag_create(sc->sc_parent_dtag,
 2205                                 1,
 2206                                 0,
 2207                                 BUS_SPACE_MAXADDR,
 2208                                 BUS_SPACE_MAXADDR,
 2209                                 NULL, NULL,
 2210                                 MCLBYTES,
 2211                                 1,
 2212                                 MCLBYTES,
 2213                                 BUS_DMA_ALLOCNOW,
 2214                                 NULL, NULL,
 2215                                 &sc->sc_buf_dtag);
 2216         if (error) {
 2217                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
 2218                 return error;
 2219         }
 2220 
 2221         ntx = 0;
 2222 
 2223         /*
 2224          * Create TX mbuf DMA map
 2225          */
 2226         for (i = 0; i < BWI_TX_NRING; ++i) {
 2227                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
 2228 
 2229                 for (j = 0; j < BWI_TX_NDESC; ++j) {
 2230                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
 2231                                                   &tbd->tbd_buf[j].tb_dmap);
 2232                         if (error) {
 2233                                 device_printf(sc->sc_dev, "can't create "
 2234                                               "%dth tbd, %dth DMA map\n", i, j);
 2235 
 2236                                 ntx = i;
 2237                                 for (k = 0; k < j; ++k) {
 2238                                         bus_dmamap_destroy(sc->sc_buf_dtag,
 2239                                                 tbd->tbd_buf[k].tb_dmap);
 2240                                 }
 2241                                 goto fail;
 2242                         }
 2243                 }
 2244         }
 2245         ntx = BWI_TX_NRING;
 2246 
 2247         /*
 2248          * Create RX mbuf DMA map and a spare DMA map
 2249          */
 2250         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
 2251                                   &rbd->rbd_tmp_dmap);
 2252         if (error) {
 2253                 device_printf(sc->sc_dev,
 2254                               "can't create spare RX buf DMA map\n");
 2255                 goto fail;
 2256         }
 2257 
 2258         for (j = 0; j < BWI_RX_NDESC; ++j) {
 2259                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
 2260                                           &rbd->rbd_buf[j].rb_dmap);
 2261                 if (error) {
 2262                         device_printf(sc->sc_dev, "can't create %dth "
 2263                                       "RX buf DMA map\n", j);
 2264 
 2265                         for (k = 0; k < j; ++k) {
 2266                                 bus_dmamap_destroy(sc->sc_buf_dtag,
 2267                                         rbd->rbd_buf[j].rb_dmap);
 2268                         }
 2269                         bus_dmamap_destroy(sc->sc_buf_dtag,
 2270                                            rbd->rbd_tmp_dmap);
 2271                         goto fail;
 2272                 }
 2273         }
 2274 
 2275         return 0;
 2276 fail:
 2277         bwi_dma_mbuf_destroy(sc, ntx, 0);
 2278         return error;
 2279 }
 2280 
 2281 static void
 2282 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
 2283 {
 2284         int i, j;
 2285 
 2286         if (sc->sc_buf_dtag == NULL)
 2287                 return;
 2288 
 2289         for (i = 0; i < ntx; ++i) {
 2290                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
 2291 
 2292                 for (j = 0; j < BWI_TX_NDESC; ++j) {
 2293                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
 2294 
 2295                         if (tb->tb_mbuf != NULL) {
 2296                                 bus_dmamap_unload(sc->sc_buf_dtag,
 2297                                                   tb->tb_dmap);
 2298                                 m_freem(tb->tb_mbuf);
 2299                         }
 2300                         if (tb->tb_ni != NULL)
 2301                                 ieee80211_free_node(tb->tb_ni);
 2302                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
 2303                 }
 2304         }
 2305 
 2306         if (nrx) {
 2307                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2308 
 2309                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
 2310                 for (j = 0; j < BWI_RX_NDESC; ++j) {
 2311                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
 2312 
 2313                         if (rb->rb_mbuf != NULL) {
 2314                                 bus_dmamap_unload(sc->sc_buf_dtag,
 2315                                                   rb->rb_dmap);
 2316                                 m_freem(rb->rb_mbuf);
 2317                         }
 2318                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
 2319                 }
 2320         }
 2321 
 2322         bus_dma_tag_destroy(sc->sc_buf_dtag);
 2323         sc->sc_buf_dtag = NULL;
 2324 }
 2325 
 2326 static void
 2327 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
 2328 {
 2329         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
 2330 }
 2331 
 2332 static void
 2333 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
 2334 {
 2335         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
 2336 }
 2337 
 2338 static int
 2339 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
 2340 {
 2341         struct bwi_ring_data *rd;
 2342         struct bwi_txbuf_data *tbd;
 2343         uint32_t val, addr_hi, addr_lo;
 2344 
 2345         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
 2346         rd = &sc->sc_tx_rdata[ring_idx];
 2347         tbd = &sc->sc_tx_bdata[ring_idx];
 2348 
 2349         tbd->tbd_idx = 0;
 2350         tbd->tbd_used = 0;
 2351 
 2352         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
 2353         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
 2354                         BUS_DMASYNC_PREWRITE);
 2355 
 2356         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
 2357         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
 2358 
 2359         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
 2360               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
 2361                         BWI_TXRX32_RINGINFO_FUNC_MASK);
 2362         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
 2363 
 2364         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
 2365               BWI_TXRX32_CTRL_ENABLE;
 2366         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
 2367 
 2368         return 0;
 2369 }
 2370 
 2371 static void
 2372 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
 2373                        bus_addr_t paddr, int hdr_size, int ndesc)
 2374 {
 2375         uint32_t val, addr_hi, addr_lo;
 2376 
 2377         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
 2378         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
 2379 
 2380         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
 2381               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
 2382                         BWI_TXRX32_RINGINFO_FUNC_MASK);
 2383         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
 2384 
 2385         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
 2386               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
 2387               BWI_TXRX32_CTRL_ENABLE;
 2388         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
 2389 
 2390         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
 2391                     (ndesc - 1) * sizeof(struct bwi_desc32));
 2392 }
 2393 
 2394 static int
 2395 bwi_init_rx_ring32(struct bwi_softc *sc)
 2396 {
 2397         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2398         int i, error;
 2399 
 2400         sc->sc_rx_bdata.rbd_idx = 0;
 2401 
 2402         for (i = 0; i < BWI_RX_NDESC; ++i) {
 2403                 error = bwi_newbuf(sc, i, 1);
 2404                 if (error) {
 2405                         device_printf(sc->sc_dev,
 2406                                   "can't allocate %dth RX buffer\n", i);
 2407                         return error;
 2408                 }
 2409         }
 2410         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
 2411                         BUS_DMASYNC_PREWRITE);
 2412 
 2413         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
 2414                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
 2415         return 0;
 2416 }
 2417 
 2418 static int
 2419 bwi_init_txstats32(struct bwi_softc *sc)
 2420 {
 2421         struct bwi_txstats_data *st = sc->sc_txstats;
 2422         bus_addr_t stats_paddr;
 2423         int i;
 2424 
 2425         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
 2426         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
 2427 
 2428         st->stats_idx = 0;
 2429 
 2430         stats_paddr = st->stats_paddr;
 2431         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
 2432                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
 2433                                  stats_paddr, sizeof(struct bwi_txstats), 0);
 2434                 stats_paddr += sizeof(struct bwi_txstats);
 2435         }
 2436         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
 2437                         BUS_DMASYNC_PREWRITE);
 2438 
 2439         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
 2440                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
 2441         return 0;
 2442 }
 2443 
 2444 static void
 2445 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
 2446                     int buf_len)
 2447 {
 2448         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2449 
 2450         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
 2451         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
 2452                          paddr, buf_len, 0);
 2453 }
 2454 
 2455 static void
 2456 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
 2457                     int buf_idx, bus_addr_t paddr, int buf_len)
 2458 {
 2459         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
 2460         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
 2461                          paddr, buf_len, 1);
 2462 }
 2463 
 2464 static int
 2465 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
 2466 {
 2467         /* TODO:64 */
 2468         return EOPNOTSUPP;
 2469 }
 2470 
 2471 static int
 2472 bwi_init_rx_ring64(struct bwi_softc *sc)
 2473 {
 2474         /* TODO:64 */
 2475         return EOPNOTSUPP;
 2476 }
 2477 
 2478 static int
 2479 bwi_init_txstats64(struct bwi_softc *sc)
 2480 {
 2481         /* TODO:64 */
 2482         return EOPNOTSUPP;
 2483 }
 2484 
 2485 static void
 2486 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
 2487                     int buf_len)
 2488 {
 2489         /* TODO:64 */
 2490 }
 2491 
 2492 static void
 2493 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
 2494                     int buf_idx, bus_addr_t paddr, int buf_len)
 2495 {
 2496         /* TODO:64 */
 2497 }
 2498 
 2499 static void
 2500 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
 2501                  bus_size_t mapsz __unused, int error)
 2502 {
 2503         if (!error) {
 2504                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
 2505                 *((bus_addr_t *)arg) = seg->ds_addr;
 2506         }
 2507 }
 2508 
 2509 static int
 2510 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
 2511 {
 2512         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2513         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
 2514         struct bwi_rxbuf_hdr *hdr;
 2515         bus_dmamap_t map;
 2516         bus_addr_t paddr;
 2517         struct mbuf *m;
 2518         int error;
 2519 
 2520         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
 2521 
 2522         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 2523         if (m == NULL) {
 2524                 error = ENOBUFS;
 2525 
 2526                 /*
 2527                  * If the NIC is up and running, we need to:
 2528                  * - Clear RX buffer's header.
 2529                  * - Restore RX descriptor settings.
 2530                  */
 2531                 if (init)
 2532                         return error;
 2533                 else
 2534                         goto back;
 2535         }
 2536         m->m_len = m->m_pkthdr.len = MCLBYTES;
 2537 
 2538         /*
 2539          * Try to load RX buf into temporary DMA map
 2540          */
 2541         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
 2542                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
 2543         if (error) {
 2544                 m_freem(m);
 2545 
 2546                 /*
 2547                  * See the comment above
 2548                  */
 2549                 if (init)
 2550                         return error;
 2551                 else
 2552                         goto back;
 2553         }
 2554 
 2555         if (!init)
 2556                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
 2557         rxbuf->rb_mbuf = m;
 2558         rxbuf->rb_paddr = paddr;
 2559 
 2560         /*
 2561          * Swap RX buf's DMA map with the loaded temporary one
 2562          */
 2563         map = rxbuf->rb_dmap;
 2564         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
 2565         rbd->rbd_tmp_dmap = map;
 2566 
 2567 back:
 2568         /*
 2569          * Clear RX buf header
 2570          */
 2571         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
 2572         bzero(hdr, sizeof(*hdr));
 2573         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
 2574 
 2575         /*
 2576          * Setup RX buf descriptor
 2577          */
 2578         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
 2579                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
 2580         return error;
 2581 }
 2582 
 2583 static void
 2584 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
 2585                     const uint8_t *addr)
 2586 {
 2587         int i;
 2588 
 2589         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
 2590                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
 2591 
 2592         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
 2593                 uint16_t addr_val;
 2594 
 2595                 addr_val = (uint16_t)addr[i * 2] |
 2596                            (((uint16_t)addr[(i * 2) + 1]) << 8);
 2597                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
 2598         }
 2599 }
 2600 
 2601 static int
 2602 bwi_rxeof(struct bwi_softc *sc, int end_idx)
 2603 {
 2604         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2605         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2606         struct ieee80211com *ic = &sc->sc_ic;
 2607         int idx, rx_data = 0;
 2608 
 2609         idx = rbd->rbd_idx;
 2610         while (idx != end_idx) {
 2611                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
 2612                 struct bwi_rxbuf_hdr *hdr;
 2613                 struct ieee80211_frame_min *wh;
 2614                 struct ieee80211_node *ni;
 2615                 struct mbuf *m;
 2616                 uint32_t plcp;
 2617                 uint16_t flags2;
 2618                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
 2619 
 2620                 m = rb->rb_mbuf;
 2621                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
 2622                                 BUS_DMASYNC_POSTREAD);
 2623 
 2624                 if (bwi_newbuf(sc, idx, 0)) {
 2625                         counter_u64_add(ic->ic_ierrors, 1);
 2626                         goto next;
 2627                 }
 2628 
 2629                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
 2630                 flags2 = le16toh(hdr->rxh_flags2);
 2631 
 2632                 hdr_extra = 0;
 2633                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
 2634                         hdr_extra = 2;
 2635                 wh_ofs = hdr_extra + 6; /* XXX magic number */
 2636 
 2637                 buflen = le16toh(hdr->rxh_buflen);
 2638                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
 2639                         device_printf(sc->sc_dev,
 2640                             "%s: zero length data, hdr_extra %d\n",
 2641                             __func__, hdr_extra);
 2642                         counter_u64_add(ic->ic_ierrors, 1);
 2643                         m_freem(m);
 2644                         goto next;
 2645                 }
 2646 
 2647                 bcopy((uint8_t *)(hdr + 1) + hdr_extra, &plcp, sizeof(plcp));   
 2648                 rssi = bwi_calc_rssi(sc, hdr);
 2649                 noise = bwi_calc_noise(sc);
 2650 
 2651                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
 2652                 m_adj(m, sizeof(*hdr) + wh_ofs);
 2653 
 2654                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
 2655                         rate = bwi_plcp2rate(plcp, IEEE80211_T_OFDM);
 2656                 else
 2657                         rate = bwi_plcp2rate(plcp, IEEE80211_T_CCK);
 2658 
 2659                 /* RX radio tap */
 2660                 if (ieee80211_radiotap_active(ic))
 2661                         bwi_rx_radiotap(sc, m, hdr, &plcp, rate, rssi, noise);
 2662 
 2663                 m_adj(m, -IEEE80211_CRC_LEN);
 2664 
 2665                 BWI_UNLOCK(sc);
 2666 
 2667                 wh = mtod(m, struct ieee80211_frame_min *);
 2668                 ni = ieee80211_find_rxnode(ic, wh);
 2669                 if (ni != NULL) {
 2670                         type = ieee80211_input(ni, m, rssi - noise, noise);
 2671                         ieee80211_free_node(ni);
 2672                 } else
 2673                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
 2674                 if (type == IEEE80211_FC0_TYPE_DATA) {
 2675                         rx_data = 1;
 2676                         sc->sc_rx_rate = rate;
 2677                 }
 2678 
 2679                 BWI_LOCK(sc);
 2680 next:
 2681                 idx = (idx + 1) % BWI_RX_NDESC;
 2682 
 2683                 if (sc->sc_flags & BWI_F_STOP) {
 2684                         /*
 2685                          * Take the fast lane, don't do
 2686                          * any damage to softc
 2687                          */
 2688                         return -1;
 2689                 }
 2690         }
 2691 
 2692         rbd->rbd_idx = idx;
 2693         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
 2694                         BUS_DMASYNC_PREWRITE);
 2695 
 2696         return rx_data;
 2697 }
 2698 
 2699 static int
 2700 bwi_rxeof32(struct bwi_softc *sc)
 2701 {
 2702         uint32_t val, rx_ctrl;
 2703         int end_idx, rx_data;
 2704 
 2705         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
 2706 
 2707         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
 2708         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
 2709                   sizeof(struct bwi_desc32);
 2710 
 2711         rx_data = bwi_rxeof(sc, end_idx);
 2712         if (rx_data >= 0) {
 2713                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
 2714                             end_idx * sizeof(struct bwi_desc32));
 2715         }
 2716         return rx_data;
 2717 }
 2718 
 2719 static int
 2720 bwi_rxeof64(struct bwi_softc *sc)
 2721 {
 2722         /* TODO:64 */
 2723         return 0;
 2724 }
 2725 
 2726 static void
 2727 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
 2728 {
 2729         int i;
 2730 
 2731         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
 2732 
 2733 #define NRETRY 10
 2734 
 2735         for (i = 0; i < NRETRY; ++i) {
 2736                 uint32_t status;
 2737 
 2738                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
 2739                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
 2740                     BWI_RX32_STATUS_STATE_DISABLED)
 2741                         break;
 2742 
 2743                 DELAY(1000);
 2744         }
 2745         if (i == NRETRY)
 2746                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
 2747 
 2748 #undef NRETRY
 2749 
 2750         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
 2751 }
 2752 
 2753 static void
 2754 bwi_free_txstats32(struct bwi_softc *sc)
 2755 {
 2756         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
 2757 }
 2758 
 2759 static void
 2760 bwi_free_rx_ring32(struct bwi_softc *sc)
 2761 {
 2762         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
 2763         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
 2764         int i;
 2765 
 2766         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
 2767 
 2768         for (i = 0; i < BWI_RX_NDESC; ++i) {
 2769                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
 2770 
 2771                 if (rb->rb_mbuf != NULL) {
 2772                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
 2773                         m_freem(rb->rb_mbuf);
 2774                         rb->rb_mbuf = NULL;
 2775                 }
 2776         }
 2777 }
 2778 
 2779 static void
 2780 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
 2781 {
 2782         struct bwi_ring_data *rd;
 2783         struct bwi_txbuf_data *tbd;
 2784         uint32_t state, val;
 2785         int i;
 2786 
 2787         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
 2788         rd = &sc->sc_tx_rdata[ring_idx];
 2789         tbd = &sc->sc_tx_bdata[ring_idx];
 2790 
 2791 #define NRETRY 10
 2792 
 2793         for (i = 0; i < NRETRY; ++i) {
 2794                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
 2795                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
 2796                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
 2797                     state == BWI_TX32_STATUS_STATE_IDLE ||
 2798                     state == BWI_TX32_STATUS_STATE_STOPPED)
 2799                         break;
 2800 
 2801                 DELAY(1000);
 2802         }
 2803         if (i == NRETRY) {
 2804                 device_printf(sc->sc_dev,
 2805                     "%s: wait for TX ring(%d) stable timed out\n",
 2806                     __func__, ring_idx);
 2807         }
 2808 
 2809         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
 2810         for (i = 0; i < NRETRY; ++i) {
 2811                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
 2812                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
 2813                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
 2814                         break;
 2815 
 2816                 DELAY(1000);
 2817         }
 2818         if (i == NRETRY)
 2819                 device_printf(sc->sc_dev, "%s: reset TX ring (%d) timed out\n",
 2820                      __func__, ring_idx);
 2821 
 2822 #undef NRETRY
 2823 
 2824         DELAY(1000);
 2825 
 2826         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
 2827 
 2828         for (i = 0; i < BWI_TX_NDESC; ++i) {
 2829                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
 2830 
 2831                 if (tb->tb_mbuf != NULL) {
 2832                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
 2833                         m_freem(tb->tb_mbuf);
 2834                         tb->tb_mbuf = NULL;
 2835                 }
 2836                 if (tb->tb_ni != NULL) {
 2837                         ieee80211_free_node(tb->tb_ni);
 2838                         tb->tb_ni = NULL;
 2839                 }
 2840         }
 2841 }
 2842 
 2843 static void
 2844 bwi_free_txstats64(struct bwi_softc *sc)
 2845 {
 2846         /* TODO:64 */
 2847 }
 2848 
 2849 static void
 2850 bwi_free_rx_ring64(struct bwi_softc *sc)
 2851 {
 2852         /* TODO:64 */
 2853 }
 2854 
 2855 static void
 2856 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
 2857 {
 2858         /* TODO:64 */
 2859 }
 2860 
 2861 /* XXX does not belong here */
 2862 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 2863 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 2864 
 2865 static __inline void
 2866 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 2867 {
 2868         uint32_t plcp;
 2869 
 2870         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
 2871                     IEEE80211_OFDM_PLCP_RATE_MASK) |
 2872                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 2873         *plcp0 = htole32(plcp);
 2874 }
 2875 
 2876 static __inline void
 2877 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 2878                    uint8_t rate)
 2879 {
 2880         int len, service, pkt_bitlen;
 2881 
 2882         pkt_bitlen = pkt_len * NBBY;
 2883         len = howmany(pkt_bitlen * 2, rate);
 2884 
 2885         service = IEEE80211_PLCP_SERVICE_LOCKED;
 2886         if (rate == (11 * 2)) {
 2887                 int pkt_bitlen1;
 2888 
 2889                 /*
 2890                  * PLCP service field needs to be adjusted,
 2891                  * if TX rate is 11Mbytes/s
 2892                  */
 2893                 pkt_bitlen1 = len * 11;
 2894                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 2895                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
 2896         }
 2897 
 2898         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
 2899         plcp->i_service = service;
 2900         plcp->i_length = htole16(len);
 2901         /* NOTE: do NOT touch i_crc */
 2902 }
 2903 
 2904 static __inline void
 2905 bwi_plcp_header(const struct ieee80211_rate_table *rt,
 2906         void *plcp, int pkt_len, uint8_t rate)
 2907 {
 2908         enum ieee80211_phytype modtype;
 2909 
 2910         /*
 2911          * Assume caller has zeroed 'plcp'
 2912          */
 2913         modtype = ieee80211_rate2phytype(rt, rate);
 2914         if (modtype == IEEE80211_T_OFDM)
 2915                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 2916         else if (modtype == IEEE80211_T_DS)
 2917                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 2918         else
 2919                 panic("unsupport modulation type %u\n", modtype);
 2920 }
 2921 
 2922 static int
 2923 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
 2924           struct ieee80211_node *ni)
 2925 {
 2926         struct ieee80211vap *vap = ni->ni_vap;
 2927         struct ieee80211com *ic = &sc->sc_ic;
 2928         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
 2929         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 2930         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
 2931         struct bwi_mac *mac;
 2932         struct bwi_txbuf_hdr *hdr;
 2933         struct ieee80211_frame *wh;
 2934         const struct ieee80211_txparam *tp;
 2935         uint8_t rate, rate_fb;
 2936         uint32_t mac_ctrl;
 2937         uint16_t phy_ctrl;
 2938         bus_addr_t paddr;
 2939         int type, ismcast, pkt_len, error, rix;
 2940 #if 0
 2941         const uint8_t *p;
 2942         int i;
 2943 #endif
 2944 
 2945         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 2946             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 2947         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 2948 
 2949         wh = mtod(m, struct ieee80211_frame *);
 2950         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
 2951         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
 2952 
 2953         /* Get 802.11 frame len before prepending TX header */
 2954         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
 2955 
 2956         /*
 2957          * Find TX rate
 2958          */
 2959         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 2960         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
 2961                 rate = rate_fb = tp->mgmtrate;
 2962         } else if (ismcast) {
 2963                 rate = rate_fb = tp->mcastrate;
 2964         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
 2965                 rate = rate_fb = tp->ucastrate;
 2966         } else {
 2967                 rix = ieee80211_ratectl_rate(ni, NULL, pkt_len);
 2968                 rate = ni->ni_txrate;
 2969 
 2970                 if (rix > 0) {
 2971                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
 2972                                   IEEE80211_RATE_VAL;
 2973                 } else {
 2974                         rate_fb = rate;
 2975                 }
 2976         }
 2977         tb->tb_rate[0] = rate;
 2978         tb->tb_rate[1] = rate_fb;
 2979         sc->sc_tx_rate = rate;
 2980 
 2981         /*
 2982          * TX radio tap
 2983          */
 2984         if (ieee80211_radiotap_active_vap(vap)) {
 2985                 sc->sc_tx_th.wt_flags = 0;
 2986                 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
 2987                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
 2988                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
 2989                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
 2990                     rate != (1 * 2)) {
 2991                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 2992                 }
 2993                 sc->sc_tx_th.wt_rate = rate;
 2994 
 2995                 ieee80211_radiotap_tx(vap, m);
 2996         }
 2997 
 2998         /*
 2999          * Setup the embedded TX header
 3000          */
 3001         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
 3002         if (m == NULL) {
 3003                 device_printf(sc->sc_dev, "%s: prepend TX header failed\n",
 3004                     __func__);
 3005                 return ENOBUFS;
 3006         }
 3007         hdr = mtod(m, struct bwi_txbuf_hdr *);
 3008 
 3009         bzero(hdr, sizeof(*hdr));
 3010 
 3011         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
 3012         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
 3013 
 3014         if (!ismcast) {
 3015                 uint16_t dur;
 3016 
 3017                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
 3018                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
 3019 
 3020                 hdr->txh_fb_duration = htole16(dur);
 3021         }
 3022 
 3023         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
 3024                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
 3025 
 3026         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
 3027         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
 3028 
 3029         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
 3030                              BWI_TXH_PHY_C_ANTMODE_MASK);
 3031         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
 3032                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
 3033         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
 3034                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
 3035 
 3036         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
 3037         if (!ismcast)
 3038                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
 3039         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
 3040                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
 3041 
 3042         hdr->txh_mac_ctrl = htole32(mac_ctrl);
 3043         hdr->txh_phy_ctrl = htole16(phy_ctrl);
 3044 
 3045         /* Catch any further usage */
 3046         hdr = NULL;
 3047         wh = NULL;
 3048 
 3049         /* DMA load */
 3050         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3051                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
 3052         if (error && error != EFBIG) {
 3053                 device_printf(sc->sc_dev, "%s: can't load TX buffer (1) %d\n",
 3054                     __func__, error);
 3055                 goto back;
 3056         }
 3057 
 3058         if (error) {    /* error == EFBIG */
 3059                 struct mbuf *m_new;
 3060 
 3061                 m_new = m_defrag(m, M_NOWAIT);
 3062                 if (m_new == NULL) {
 3063                         device_printf(sc->sc_dev,
 3064                             "%s: can't defrag TX buffer\n", __func__);
 3065                         error = ENOBUFS;
 3066                         goto back;
 3067                 } else {
 3068                         m = m_new;
 3069                 }
 3070 
 3071                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3072                                              bwi_dma_buf_addr, &paddr,
 3073                                              BUS_DMA_NOWAIT);
 3074                 if (error) {
 3075                         device_printf(sc->sc_dev,
 3076                             "%s: can't load TX buffer (2) %d\n",
 3077                             __func__, error);
 3078                         goto back;
 3079                 }
 3080         }
 3081         error = 0;
 3082 
 3083         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
 3084 
 3085         tb->tb_mbuf = m;
 3086         tb->tb_ni = ni;
 3087 
 3088 #if 0
 3089         p = mtod(m, const uint8_t *);
 3090         for (i = 0; i < m->m_pkthdr.len; ++i) {
 3091                 if (i != 0 && i % 8 == 0)
 3092                         printf("\n");
 3093                 printf("%02x ", p[i]);
 3094         }
 3095         printf("\n");
 3096 #endif
 3097         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
 3098                 idx, pkt_len, m->m_pkthdr.len);
 3099 
 3100         /* Setup TX descriptor */
 3101         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
 3102         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
 3103                         BUS_DMASYNC_PREWRITE);
 3104 
 3105         /* Kick start */
 3106         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
 3107 
 3108 back:
 3109         if (error)
 3110                 m_freem(m);
 3111         return error;
 3112 }
 3113 
 3114 static int
 3115 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
 3116           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
 3117 {
 3118         struct ieee80211vap *vap = ni->ni_vap;
 3119         struct ieee80211com *ic = ni->ni_ic;
 3120         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
 3121         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
 3122         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
 3123         struct bwi_mac *mac;
 3124         struct bwi_txbuf_hdr *hdr;
 3125         struct ieee80211_frame *wh;
 3126         uint8_t rate, rate_fb;
 3127         uint32_t mac_ctrl;
 3128         uint16_t phy_ctrl;
 3129         bus_addr_t paddr;
 3130         int ismcast, pkt_len, error;
 3131 
 3132         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3133             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3134         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3135 
 3136         wh = mtod(m, struct ieee80211_frame *);
 3137         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
 3138 
 3139         /* Get 802.11 frame len before prepending TX header */
 3140         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
 3141 
 3142         /*
 3143          * Find TX rate
 3144          */
 3145         rate = params->ibp_rate0;
 3146         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
 3147                 /* XXX fall back to mcast/mgmt rate? */
 3148                 m_freem(m);
 3149                 return EINVAL;
 3150         }
 3151         if (params->ibp_try1 != 0) {
 3152                 rate_fb = params->ibp_rate1;
 3153                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
 3154                         /* XXX fall back to rate0? */
 3155                         m_freem(m);
 3156                         return EINVAL;
 3157                 }
 3158         } else
 3159                 rate_fb = rate;
 3160         tb->tb_rate[0] = rate;
 3161         tb->tb_rate[1] = rate_fb;
 3162         sc->sc_tx_rate = rate;
 3163 
 3164         /*
 3165          * TX radio tap
 3166          */
 3167         if (ieee80211_radiotap_active_vap(vap)) {
 3168                 sc->sc_tx_th.wt_flags = 0;
 3169                 /* XXX IEEE80211_BPF_CRYPTO */
 3170                 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
 3171                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
 3172                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
 3173                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 3174                 sc->sc_tx_th.wt_rate = rate;
 3175 
 3176                 ieee80211_radiotap_tx(vap, m);
 3177         }
 3178 
 3179         /*
 3180          * Setup the embedded TX header
 3181          */
 3182         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
 3183         if (m == NULL) {
 3184                 device_printf(sc->sc_dev, "%s: prepend TX header failed\n",
 3185                     __func__);
 3186                 return ENOBUFS;
 3187         }
 3188         hdr = mtod(m, struct bwi_txbuf_hdr *);
 3189 
 3190         bzero(hdr, sizeof(*hdr));
 3191 
 3192         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
 3193         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
 3194 
 3195         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
 3196         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
 3197                 uint16_t dur;
 3198 
 3199                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
 3200 
 3201                 hdr->txh_fb_duration = htole16(dur);
 3202                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
 3203         }
 3204 
 3205         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
 3206                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
 3207 
 3208         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
 3209         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
 3210 
 3211         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
 3212                              BWI_TXH_PHY_C_ANTMODE_MASK);
 3213         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
 3214                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
 3215                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
 3216         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
 3217                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
 3218 
 3219         hdr->txh_mac_ctrl = htole32(mac_ctrl);
 3220         hdr->txh_phy_ctrl = htole16(phy_ctrl);
 3221 
 3222         /* Catch any further usage */
 3223         hdr = NULL;
 3224         wh = NULL;
 3225 
 3226         /* DMA load */
 3227         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3228                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
 3229         if (error != 0) {
 3230                 struct mbuf *m_new;
 3231 
 3232                 if (error != EFBIG) {
 3233                         device_printf(sc->sc_dev,
 3234                             "%s: can't load TX buffer (1) %d\n",
 3235                             __func__, error);
 3236                         goto back;
 3237                 }
 3238                 m_new = m_defrag(m, M_NOWAIT);
 3239                 if (m_new == NULL) {
 3240                         device_printf(sc->sc_dev,
 3241                             "%s: can't defrag TX buffer\n", __func__);
 3242                         error = ENOBUFS;
 3243                         goto back;
 3244                 }
 3245                 m = m_new;
 3246                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
 3247                                              bwi_dma_buf_addr, &paddr,
 3248                                              BUS_DMA_NOWAIT);
 3249                 if (error) {
 3250                         device_printf(sc->sc_dev,
 3251                             "%s: can't load TX buffer (2) %d\n",
 3252                             __func__, error);
 3253                         goto back;
 3254                 }
 3255         }
 3256 
 3257         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
 3258 
 3259         tb->tb_mbuf = m;
 3260         tb->tb_ni = ni;
 3261 
 3262         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
 3263                 idx, pkt_len, m->m_pkthdr.len);
 3264 
 3265         /* Setup TX descriptor */
 3266         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
 3267         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
 3268                         BUS_DMASYNC_PREWRITE);
 3269 
 3270         /* Kick start */
 3271         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
 3272 back:
 3273         if (error)
 3274                 m_freem(m);
 3275         return error;
 3276 }
 3277 
 3278 static void
 3279 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
 3280 {
 3281         idx = (idx + 1) % BWI_TX_NDESC;
 3282         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
 3283                     idx * sizeof(struct bwi_desc32));
 3284 }
 3285 
 3286 static void
 3287 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
 3288 {
 3289         /* TODO:64 */
 3290 }
 3291 
 3292 static void
 3293 bwi_txeof_status32(struct bwi_softc *sc)
 3294 {
 3295         uint32_t val, ctrl_base;
 3296         int end_idx;
 3297 
 3298         ctrl_base = sc->sc_txstats->stats_ctrl_base;
 3299 
 3300         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
 3301         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
 3302                   sizeof(struct bwi_desc32);
 3303 
 3304         bwi_txeof_status(sc, end_idx);
 3305 
 3306         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
 3307                     end_idx * sizeof(struct bwi_desc32));
 3308 
 3309         bwi_start_locked(sc);
 3310 }
 3311 
 3312 static void
 3313 bwi_txeof_status64(struct bwi_softc *sc)
 3314 {
 3315         /* TODO:64 */
 3316 }
 3317 
 3318 static void
 3319 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
 3320 {
 3321         struct bwi_txbuf_data *tbd;
 3322         struct bwi_txbuf *tb;
 3323         int ring_idx, buf_idx;
 3324         struct ieee80211_node *ni;
 3325         struct ieee80211vap *vap;
 3326 
 3327         if (tx_id == 0) {
 3328                 device_printf(sc->sc_dev, "%s: zero tx id\n", __func__);
 3329                 return;
 3330         }
 3331 
 3332         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
 3333         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
 3334 
 3335         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
 3336         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
 3337 
 3338         tbd = &sc->sc_tx_bdata[ring_idx];
 3339         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
 3340         tbd->tbd_used--;
 3341 
 3342         tb = &tbd->tbd_buf[buf_idx];
 3343         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
 3344                 "acked %d, data_txcnt %d, ni %p\n",
 3345                 buf_idx, acked, data_txcnt, tb->tb_ni);
 3346 
 3347         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
 3348 
 3349         if ((ni = tb->tb_ni) != NULL) {
 3350                 const struct bwi_txbuf_hdr *hdr =
 3351                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
 3352                 vap = ni->ni_vap;
 3353 
 3354                 /* NB: update rate control only for unicast frames */
 3355                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
 3356                         /*
 3357                          * Feed back 'acked and data_txcnt'.  Note that the
 3358                          * generic AMRR code only understands one tx rate
 3359                          * and the estimator doesn't handle real retry counts
 3360                          * well so to avoid over-aggressive downshifting we
 3361                          * treat any number of retries as "1".
 3362                          */
 3363                         ieee80211_ratectl_tx_complete(vap, ni,
 3364                             (data_txcnt > 1) ? IEEE80211_RATECTL_TX_SUCCESS :
 3365                                 IEEE80211_RATECTL_TX_FAILURE, &acked, NULL);
 3366                 }
 3367                 ieee80211_tx_complete(ni, tb->tb_mbuf, !acked);
 3368                 tb->tb_ni = NULL;
 3369         } else
 3370                 m_freem(tb->tb_mbuf);
 3371         tb->tb_mbuf = NULL;
 3372 
 3373         if (tbd->tbd_used == 0)
 3374                 sc->sc_tx_timer = 0;
 3375 }
 3376 
 3377 static void
 3378 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
 3379 {
 3380         struct bwi_txstats_data *st = sc->sc_txstats;
 3381         int idx;
 3382 
 3383         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
 3384 
 3385         idx = st->stats_idx;
 3386         while (idx != end_idx) {
 3387                 const struct bwi_txstats *stats = &st->stats[idx];
 3388 
 3389                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
 3390                         int data_txcnt;
 3391 
 3392                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
 3393                                                 BWI_TXS_TXCNT_DATA);
 3394                         _bwi_txeof(sc, le16toh(stats->txs_id),
 3395                                    stats->txs_flags & BWI_TXS_F_ACKED,
 3396                                    data_txcnt);
 3397                 }
 3398                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
 3399         }
 3400         st->stats_idx = idx;
 3401 }
 3402 
 3403 static void
 3404 bwi_txeof(struct bwi_softc *sc)
 3405 {
 3406 
 3407         for (;;) {
 3408                 uint32_t tx_status0, tx_status1;
 3409                 uint16_t tx_id;
 3410                 int data_txcnt;
 3411 
 3412                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
 3413                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
 3414                         break;
 3415                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
 3416 
 3417                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
 3418                 data_txcnt = __SHIFTOUT(tx_status0,
 3419                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
 3420 
 3421                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
 3422                         continue;
 3423 
 3424                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
 3425                     data_txcnt);
 3426         }
 3427 
 3428         bwi_start_locked(sc);
 3429 }
 3430 
 3431 static int
 3432 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
 3433 {
 3434         bwi_power_on(sc, 1);
 3435         return bwi_set_clock_mode(sc, clk_mode);
 3436 }
 3437 
 3438 static void
 3439 bwi_bbp_power_off(struct bwi_softc *sc)
 3440 {
 3441         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
 3442         bwi_power_off(sc, 1);
 3443 }
 3444 
 3445 static int
 3446 bwi_get_pwron_delay(struct bwi_softc *sc)
 3447 {
 3448         struct bwi_regwin *com, *old;
 3449         struct bwi_clock_freq freq;
 3450         uint32_t val;
 3451         int error;
 3452 
 3453         com = &sc->sc_com_regwin;
 3454         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
 3455 
 3456         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
 3457                 return 0;
 3458 
 3459         error = bwi_regwin_switch(sc, com, &old);
 3460         if (error)
 3461                 return error;
 3462 
 3463         bwi_get_clock_freq(sc, &freq);
 3464 
 3465         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
 3466         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
 3467         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
 3468 
 3469         return bwi_regwin_switch(sc, old, NULL);
 3470 }
 3471 
 3472 static int
 3473 bwi_bus_attach(struct bwi_softc *sc)
 3474 {
 3475         struct bwi_regwin *bus, *old;
 3476         int error;
 3477 
 3478         bus = &sc->sc_bus_regwin;
 3479 
 3480         error = bwi_regwin_switch(sc, bus, &old);
 3481         if (error)
 3482                 return error;
 3483 
 3484         if (!bwi_regwin_is_enabled(sc, bus))
 3485                 bwi_regwin_enable(sc, bus, 0);
 3486 
 3487         /* Disable interripts */
 3488         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
 3489 
 3490         return bwi_regwin_switch(sc, old, NULL);
 3491 }
 3492 
 3493 static const char *
 3494 bwi_regwin_name(const struct bwi_regwin *rw)
 3495 {
 3496         switch (rw->rw_type) {
 3497         case BWI_REGWIN_T_COM:
 3498                 return "COM";
 3499         case BWI_REGWIN_T_BUSPCI:
 3500                 return "PCI";
 3501         case BWI_REGWIN_T_MAC:
 3502                 return "MAC";
 3503         case BWI_REGWIN_T_BUSPCIE:
 3504                 return "PCIE";
 3505         }
 3506         panic("unknown regwin type 0x%04x\n", rw->rw_type);
 3507         return NULL;
 3508 }
 3509 
 3510 static uint32_t
 3511 bwi_regwin_disable_bits(struct bwi_softc *sc)
 3512 {
 3513         uint32_t busrev;
 3514 
 3515         /* XXX cache this */
 3516         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
 3517         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
 3518                 "bus rev %u\n", busrev);
 3519 
 3520         if (busrev == BWI_BUSREV_0)
 3521                 return BWI_STATE_LO_DISABLE1;
 3522         else if (busrev == BWI_BUSREV_1)
 3523                 return BWI_STATE_LO_DISABLE2;
 3524         else
 3525                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
 3526 }
 3527 
 3528 int
 3529 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
 3530 {
 3531         uint32_t val, disable_bits;
 3532 
 3533         disable_bits = bwi_regwin_disable_bits(sc);
 3534         val = CSR_READ_4(sc, BWI_STATE_LO);
 3535 
 3536         if ((val & (BWI_STATE_LO_CLOCK |
 3537                     BWI_STATE_LO_RESET |
 3538                     disable_bits)) == BWI_STATE_LO_CLOCK) {
 3539                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
 3540                         bwi_regwin_name(rw));
 3541                 return 1;
 3542         } else {
 3543                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
 3544                         bwi_regwin_name(rw));
 3545                 return 0;
 3546         }
 3547 }
 3548 
 3549 void
 3550 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
 3551 {
 3552         uint32_t state_lo, disable_bits;
 3553         int i;
 3554 
 3555         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
 3556 
 3557         /*
 3558          * If current regwin is in 'reset' state, it was already disabled.
 3559          */
 3560         if (state_lo & BWI_STATE_LO_RESET) {
 3561                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
 3562                         "%s was already disabled\n", bwi_regwin_name(rw));
 3563                 return;
 3564         }
 3565 
 3566         disable_bits = bwi_regwin_disable_bits(sc);
 3567 
 3568         /*
 3569          * Disable normal clock
 3570          */
 3571         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
 3572         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3573 
 3574         /*
 3575          * Wait until normal clock is disabled
 3576          */
 3577 #define NRETRY  1000
 3578         for (i = 0; i < NRETRY; ++i) {
 3579                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
 3580                 if (state_lo & disable_bits)
 3581                         break;
 3582                 DELAY(10);
 3583         }
 3584         if (i == NRETRY) {
 3585                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
 3586                               bwi_regwin_name(rw));
 3587         }
 3588 
 3589         for (i = 0; i < NRETRY; ++i) {
 3590                 uint32_t state_hi;
 3591 
 3592                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
 3593                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
 3594                         break;
 3595                 DELAY(10);
 3596         }
 3597         if (i == NRETRY) {
 3598                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
 3599                               bwi_regwin_name(rw));
 3600         }
 3601 #undef NRETRY
 3602 
 3603         /*
 3604          * Reset and disable regwin with gated clock
 3605          */
 3606         state_lo = BWI_STATE_LO_RESET | disable_bits |
 3607                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
 3608                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3609         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3610 
 3611         /* Flush pending bus write */
 3612         CSR_READ_4(sc, BWI_STATE_LO);
 3613         DELAY(1);
 3614 
 3615         /* Reset and disable regwin */
 3616         state_lo = BWI_STATE_LO_RESET | disable_bits |
 3617                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3618         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3619 
 3620         /* Flush pending bus write */
 3621         CSR_READ_4(sc, BWI_STATE_LO);
 3622         DELAY(1);
 3623 }
 3624 
 3625 void
 3626 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
 3627 {
 3628         uint32_t state_lo, state_hi, imstate;
 3629 
 3630         bwi_regwin_disable(sc, rw, flags);
 3631 
 3632         /* Reset regwin with gated clock */
 3633         state_lo = BWI_STATE_LO_RESET |
 3634                    BWI_STATE_LO_CLOCK |
 3635                    BWI_STATE_LO_GATED_CLOCK |
 3636                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3637         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3638 
 3639         /* Flush pending bus write */
 3640         CSR_READ_4(sc, BWI_STATE_LO);
 3641         DELAY(1);
 3642 
 3643         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
 3644         if (state_hi & BWI_STATE_HI_SERROR)
 3645                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
 3646 
 3647         imstate = CSR_READ_4(sc, BWI_IMSTATE);
 3648         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
 3649                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
 3650                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
 3651         }
 3652 
 3653         /* Enable regwin with gated clock */
 3654         state_lo = BWI_STATE_LO_CLOCK |
 3655                    BWI_STATE_LO_GATED_CLOCK |
 3656                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3657         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3658 
 3659         /* Flush pending bus write */
 3660         CSR_READ_4(sc, BWI_STATE_LO);
 3661         DELAY(1);
 3662 
 3663         /* Enable regwin with normal clock */
 3664         state_lo = BWI_STATE_LO_CLOCK |
 3665                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
 3666         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
 3667 
 3668         /* Flush pending bus write */
 3669         CSR_READ_4(sc, BWI_STATE_LO);
 3670         DELAY(1);
 3671 }
 3672 
 3673 static void
 3674 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
 3675 {
 3676         struct bwi_mac *mac;
 3677         struct bwi_myaddr_bssid buf;
 3678         const uint8_t *p;
 3679         uint32_t val;
 3680         int n, i;
 3681 
 3682         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3683             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3684         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3685 
 3686         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
 3687 
 3688         bcopy(sc->sc_ic.ic_macaddr, buf.myaddr, sizeof(buf.myaddr));
 3689         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
 3690 
 3691         n = sizeof(buf) / sizeof(val);
 3692         p = (const uint8_t *)&buf;
 3693         for (i = 0; i < n; ++i) {
 3694                 int j;
 3695 
 3696                 val = 0;
 3697                 for (j = 0; j < sizeof(val); ++j)
 3698                         val |= ((uint32_t)(*p++)) << (j * 8);
 3699 
 3700                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
 3701         }
 3702 }
 3703 
 3704 static void
 3705 bwi_updateslot(struct ieee80211com *ic)
 3706 {
 3707         struct bwi_softc *sc = ic->ic_softc;
 3708         struct bwi_mac *mac;
 3709 
 3710         BWI_LOCK(sc);
 3711         if (sc->sc_flags & BWI_F_RUNNING) {
 3712                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
 3713 
 3714                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3715                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3716                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3717 
 3718                 bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
 3719         }
 3720         BWI_UNLOCK(sc);
 3721 }
 3722 
 3723 static void
 3724 bwi_calibrate(void *xsc)
 3725 {
 3726         struct bwi_softc *sc = xsc;
 3727         struct bwi_mac *mac;
 3728 
 3729         BWI_ASSERT_LOCKED(sc);
 3730 
 3731         KASSERT(sc->sc_ic.ic_opmode != IEEE80211_M_MONITOR,
 3732             ("opmode %d", sc->sc_ic.ic_opmode));
 3733 
 3734         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3735             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3736         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3737 
 3738         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
 3739         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
 3740 
 3741         /* XXX 15 seconds */
 3742         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
 3743 }
 3744 
 3745 static int
 3746 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
 3747 {
 3748         struct bwi_mac *mac;
 3749 
 3750         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3751             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3752         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3753 
 3754         return bwi_rf_calc_rssi(mac, hdr);
 3755 }
 3756 
 3757 static int
 3758 bwi_calc_noise(struct bwi_softc *sc)
 3759 {
 3760         struct bwi_mac *mac;
 3761 
 3762         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
 3763             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
 3764         mac = (struct bwi_mac *)sc->sc_cur_regwin;
 3765 
 3766         return bwi_rf_calc_noise(mac);
 3767 }
 3768 
 3769 static __inline uint8_t
 3770 bwi_plcp2rate(const uint32_t plcp0, enum ieee80211_phytype type)
 3771 {
 3772         uint32_t plcp = le32toh(plcp0) & IEEE80211_OFDM_PLCP_RATE_MASK;
 3773         return (ieee80211_plcp2rate(plcp, type));
 3774 }
 3775 
 3776 static void
 3777 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
 3778     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
 3779 {
 3780         const struct ieee80211_frame_min *wh;
 3781 
 3782         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
 3783         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
 3784                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
 3785 
 3786         wh = mtod(m, const struct ieee80211_frame_min *);
 3787         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
 3788                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
 3789 
 3790         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian conversion */
 3791         sc->sc_rx_th.wr_rate = rate;
 3792         sc->sc_rx_th.wr_antsignal = rssi;
 3793         sc->sc_rx_th.wr_antnoise = noise;
 3794 }
 3795 
 3796 static void
 3797 bwi_led_attach(struct bwi_softc *sc)
 3798 {
 3799         const uint8_t *led_act = NULL;
 3800         uint16_t gpio, val[BWI_LED_MAX];
 3801         int i;
 3802 
 3803         for (i = 0; i < nitems(bwi_vendor_led_act); ++i) {
 3804                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
 3805                         led_act = bwi_vendor_led_act[i].led_act;
 3806                         break;
 3807                 }
 3808         }
 3809         if (led_act == NULL)
 3810                 led_act = bwi_default_led_act;
 3811 
 3812         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
 3813         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
 3814         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
 3815 
 3816         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
 3817         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
 3818         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
 3819 
 3820         for (i = 0; i < BWI_LED_MAX; ++i) {
 3821                 struct bwi_led *led = &sc->sc_leds[i];
 3822 
 3823                 if (val[i] == 0xff) {
 3824                         led->l_act = led_act[i];
 3825                 } else {
 3826                         if (val[i] & BWI_LED_ACT_LOW)
 3827                                 led->l_flags |= BWI_LED_F_ACTLOW;
 3828                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
 3829                 }
 3830                 led->l_mask = (1 << i);
 3831 
 3832                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
 3833                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
 3834                     led->l_act == BWI_LED_ACT_BLINK) {
 3835                         led->l_flags |= BWI_LED_F_BLINK;
 3836                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
 3837                                 led->l_flags |= BWI_LED_F_POLLABLE;
 3838                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
 3839                                 led->l_flags |= BWI_LED_F_SLOW;
 3840 
 3841                         if (sc->sc_blink_led == NULL) {
 3842                                 sc->sc_blink_led = led;
 3843                                 if (led->l_flags & BWI_LED_F_SLOW)
 3844                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
 3845                         }
 3846                 }
 3847 
 3848                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
 3849                         "%dth led, act %d, lowact %d\n", i,
 3850                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
 3851         }
 3852         callout_init_mtx(&sc->sc_led_blink_ch, &sc->sc_mtx, 0);
 3853 }
 3854 
 3855 static __inline uint16_t
 3856 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
 3857 {
 3858         if (led->l_flags & BWI_LED_F_ACTLOW)
 3859                 on = !on;
 3860         if (on)
 3861                 val |= led->l_mask;
 3862         else
 3863                 val &= ~led->l_mask;
 3864         return val;
 3865 }
 3866 
 3867 static void
 3868 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
 3869 {
 3870         struct ieee80211com *ic = &sc->sc_ic;
 3871         uint16_t val;
 3872         int i;
 3873 
 3874         if (nstate == IEEE80211_S_INIT) {
 3875                 callout_stop(&sc->sc_led_blink_ch);
 3876                 sc->sc_led_blinking = 0;
 3877         }
 3878 
 3879         if ((sc->sc_flags & BWI_F_RUNNING) == 0)
 3880                 return;
 3881 
 3882         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
 3883         for (i = 0; i < BWI_LED_MAX; ++i) {
 3884                 struct bwi_led *led = &sc->sc_leds[i];
 3885                 int on;
 3886 
 3887                 if (led->l_act == BWI_LED_ACT_UNKN ||
 3888                     led->l_act == BWI_LED_ACT_NULL)
 3889                         continue;
 3890 
 3891                 if ((led->l_flags & BWI_LED_F_BLINK) &&
 3892                     nstate != IEEE80211_S_INIT)
 3893                         continue;
 3894 
 3895                 switch (led->l_act) {
 3896                 case BWI_LED_ACT_ON:    /* Always on */
 3897                         on = 1;
 3898                         break;
 3899                 case BWI_LED_ACT_OFF:   /* Always off */
 3900                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
 3901                         on = 0;
 3902                         break;
 3903                 default:
 3904                         on = 1;
 3905                         switch (nstate) {
 3906                         case IEEE80211_S_INIT:
 3907                                 on = 0;
 3908                                 break;
 3909                         case IEEE80211_S_RUN:
 3910                                 if (led->l_act == BWI_LED_ACT_11G &&
 3911                                     ic->ic_curmode != IEEE80211_MODE_11G)
 3912                                         on = 0;
 3913                                 break;
 3914                         default:
 3915                                 if (led->l_act == BWI_LED_ACT_ASSOC)
 3916                                         on = 0;
 3917                                 break;
 3918                         }
 3919                         break;
 3920                 }
 3921 
 3922                 val = bwi_led_onoff(led, val, on);
 3923         }
 3924         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
 3925 }
 3926 static void
 3927 bwi_led_event(struct bwi_softc *sc, int event)
 3928 {
 3929         struct bwi_led *led = sc->sc_blink_led;
 3930         int rate;
 3931 
 3932         if (event == BWI_LED_EVENT_POLL) {
 3933                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
 3934                         return;
 3935                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
 3936                         return;
 3937         }
 3938 
 3939         sc->sc_led_ticks = ticks;
 3940         if (sc->sc_led_blinking)
 3941                 return;
 3942 
 3943         switch (event) {
 3944         case BWI_LED_EVENT_RX:
 3945                 rate = sc->sc_rx_rate;
 3946                 break;
 3947         case BWI_LED_EVENT_TX:
 3948                 rate = sc->sc_tx_rate;
 3949                 break;
 3950         case BWI_LED_EVENT_POLL:
 3951                 rate = 0;
 3952                 break;
 3953         default:
 3954                 panic("unknown LED event %d\n", event);
 3955                 break;
 3956         }
 3957         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
 3958             bwi_led_duration[rate].off_dur);
 3959 }
 3960 
 3961 static void
 3962 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
 3963 {
 3964         struct bwi_led *led = sc->sc_blink_led;
 3965         uint16_t val;
 3966 
 3967         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
 3968         val = bwi_led_onoff(led, val, 1);
 3969         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
 3970 
 3971         if (led->l_flags & BWI_LED_F_SLOW) {
 3972                 BWI_LED_SLOWDOWN(on_dur);
 3973                 BWI_LED_SLOWDOWN(off_dur);
 3974         }
 3975 
 3976         sc->sc_led_blinking = 1;
 3977         sc->sc_led_blink_offdur = off_dur;
 3978 
 3979         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
 3980 }
 3981 
 3982 static void
 3983 bwi_led_blink_next(void *xsc)
 3984 {
 3985         struct bwi_softc *sc = xsc;
 3986         uint16_t val;
 3987 
 3988         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
 3989         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
 3990         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
 3991 
 3992         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
 3993             bwi_led_blink_end, sc);
 3994 }
 3995 
 3996 static void
 3997 bwi_led_blink_end(void *xsc)
 3998 {
 3999         struct bwi_softc *sc = xsc;
 4000         sc->sc_led_blinking = 0;
 4001 }
 4002 
 4003 static void
 4004 bwi_restart(void *xsc, int pending)
 4005 {
 4006         struct bwi_softc *sc = xsc;
 4007 
 4008         device_printf(sc->sc_dev, "%s begin, help!\n", __func__);
 4009         BWI_LOCK(sc);
 4010         bwi_init_statechg(sc, 0);
 4011 #if 0
 4012         bwi_start_locked(sc);
 4013 #endif
 4014         BWI_UNLOCK(sc);
 4015 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/bwi/if_bwi.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/bwi/if_bwi.c
