sys/dev/bwi/if_bwi.c

   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("$FreeBSD$");
  39
  40 #include "opt_inet.h"
  41 #include "opt_bwi.h"
  42
  43 #include <sys/param.h>
  44 #include <sys/endian.h>
  45 #include <sys/kernel.h>
  46 #include <sys/bus.h>
  47 #include <sys/malloc.h>
  48 #include <sys/proc.h>
  49 #include <sys/rman.h>
  50 #include <sys/socket.h>
  51 #include <sys/sockio.h>
  52 #include <sys/sysctl.h>
  53 #include <sys/systm.h>
  54 #include <sys/taskqueue.h>
  55
  56 #include <net/if.h>
  57 #include <net/if_dl.h>
  58 #include <net/if_media.h>
  59 #include <net/if_types.h>
  60 #include <net/if_arp.h>
  61 #include <net/ethernet.h>
  62 #include <net/if_llc.h>
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_radiotap.h>
  66 #include <net80211/ieee80211_regdomain.h>
  67 #include <net80211/ieee80211_phy.h>
  68 #include <net80211/ieee80211_ratectl.h>
  69
  70 #include <net/bpf.h>
  71
  72 #ifdef INET
  73 #include <netinet/in.h>
  74 #include <netinet/if_ether.h>
  75 #endif
  76
  77 #include <machine/bus.h>
  78
  79 #include <dev/pci/pcivar.h>
  80 #include <dev/pci/pcireg.h>
  81
  82 #include <dev/bwi/bitops.h>
  83 #include <dev/bwi/if_bwireg.h>
  84 #include <dev/bwi/if_bwivar.h>
  85 #include <dev/bwi/bwimac.h>
  86 #include <dev/bwi/bwirf.h>
  87
  88 struct bwi_clock_freq {
  89         u_int           clkfreq_min;
  90         u_int           clkfreq_max;
  91 };
  92
  93 struct bwi_myaddr_bssid {
  94         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  95         uint8_t         bssid[IEEE80211_ADDR_LEN];
  96 } __packed;
  97
  98 static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
  99                    const char [IFNAMSIZ], int, int, int,
 100                    const uint8_t [IEEE80211_ADDR_LEN],
 101                    const uint8_t [IEEE80211_ADDR_LEN]);
 102 static void     bwi_vap_delete(struct ieee80211vap *);
 103 static void     bwi_init(void *);
 104 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t);
 105 static void     bwi_start(struct ifnet *);
 106 static void     bwi_start_locked(struct ifnet *);
 107 static int      bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 108                         const struct ieee80211_bpf_params *);
 109 static void     bwi_watchdog(struct ifnet *);
 110 static void     bwi_scan_start(struct ieee80211com *);
 111 static void     bwi_set_channel(struct ieee80211com *);
 112 static void     bwi_scan_end(struct ieee80211com *);
 113 static int      bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 114 static void     bwi_updateslot(struct ifnet *);
 115 static int      bwi_media_change(struct ifnet *);
 116
 117 static void     bwi_calibrate(void *);
 118
 119 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 120 static int      bwi_calc_noise(struct bwi_softc *);
 121 static __inline uint8_t bwi_ofdm_plcp2rate(const uint32_t *);
 122 static __inline uint8_t bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *);
 123 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 124                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
 125
 126 static void     bwi_restart(void *, int);
 127 static void     bwi_init_statechg(struct bwi_softc *, int);
 128 static void     bwi_stop(struct bwi_softc *, int);
 129 static void     bwi_stop_locked(struct bwi_softc *, int);
 130 static int      bwi_newbuf(struct bwi_softc *, int, int);
 131 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 132                           struct ieee80211_node *);
 133 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
 134                           struct ieee80211_node *,
 135                           const struct ieee80211_bpf_params *);
 136
 137 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 138                                        bus_addr_t, int, int);
 139 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 140
 141 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 142 static int      bwi_init_rx_ring32(struct bwi_softc *);
 143 static int      bwi_init_txstats32(struct bwi_softc *);
 144 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 145 static void     bwi_free_rx_ring32(struct bwi_softc *);
 146 static void     bwi_free_txstats32(struct bwi_softc *);
 147 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 148 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 149                                     int, bus_addr_t, int);
 150 static int      bwi_rxeof32(struct bwi_softc *);
 151 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 152 static void     bwi_txeof_status32(struct bwi_softc *);
 153
 154 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 155 static int      bwi_init_rx_ring64(struct bwi_softc *);
 156 static int      bwi_init_txstats64(struct bwi_softc *);
 157 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 158 static void     bwi_free_rx_ring64(struct bwi_softc *);
 159 static void     bwi_free_txstats64(struct bwi_softc *);
 160 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 161 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 162                                     int, bus_addr_t, int);
 163 static int      bwi_rxeof64(struct bwi_softc *);
 164 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 165 static void     bwi_txeof_status64(struct bwi_softc *);
 166
 167 static int      bwi_rxeof(struct bwi_softc *, int);
 168 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 169 static void     bwi_txeof(struct bwi_softc *);
 170 static void     bwi_txeof_status(struct bwi_softc *, int);
 171 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 172 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 173
 174 static int      bwi_dma_alloc(struct bwi_softc *);
 175 static void     bwi_dma_free(struct bwi_softc *);
 176 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 177                                    struct bwi_ring_data *, bus_size_t,
 178                                    uint32_t);
 179 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 180 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 181 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 182 static void     bwi_dma_txstats_free(struct bwi_softc *);
 183 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 184 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 185                                  bus_size_t, int);
 186
 187 static void     bwi_power_on(struct bwi_softc *, int);
 188 static int      bwi_power_off(struct bwi_softc *, int);
 189 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 190 static int      bwi_set_clock_delay(struct bwi_softc *);
 191 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 192 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 193 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 194                                     const uint8_t *);
 195 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 196
 197 static void     bwi_get_card_flags(struct bwi_softc *);
 198 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 199
 200 static int      bwi_bus_attach(struct bwi_softc *);
 201 static int      bwi_bbp_attach(struct bwi_softc *);
 202 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 203 static void     bwi_bbp_power_off(struct bwi_softc *);
 204
 205 static const char *bwi_regwin_name(const struct bwi_regwin *);
 206 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 207 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 208 static int      bwi_regwin_select(struct bwi_softc *, int);
 209
 210 static void     bwi_led_attach(struct bwi_softc *);
 211 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 212 static void     bwi_led_event(struct bwi_softc *, int);
 213 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 214 static void     bwi_led_blink_next(void *);
 215 static void     bwi_led_blink_end(void *);
 216
 217 static const struct {
 218         uint16_t        did_min;
 219         uint16_t        did_max;
 220         uint16_t        bbp_id;
 221 } bwi_bbpid_map[] = {
 222         { 0x4301, 0x4301, 0x4301 },
 223         { 0x4305, 0x4307, 0x4307 },
 224         { 0x4403, 0x4403, 0x4402 },
 225         { 0x4610, 0x4615, 0x4610 },
 226         { 0x4710, 0x4715, 0x4710 },
 227         { 0x4720, 0x4725, 0x4309 }
 228 };
 229
 230 static const struct {
 231         uint16_t        bbp_id;
 232         int             nregwin;
 233 } bwi_regwin_count[] = {
 234         { 0x4301, 5 },
 235         { 0x4306, 6 },
 236         { 0x4307, 5 },
 237         { 0x4310, 8 },
 238         { 0x4401, 3 },
 239         { 0x4402, 3 },
 240         { 0x4610, 9 },
 241         { 0x4704, 9 },
 242         { 0x4710, 9 },
 243         { 0x5365, 7 }
 244 };
 245
 246 #define CLKSRC(src)                             \
 247 [BWI_CLKSRC_ ## src] = {                        \
 248         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 249         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 250 }
 251
 252 static const struct {
 253         u_int   freq_min;
 254         u_int   freq_max;
 255 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 256         CLKSRC(LP_OSC),
 257         CLKSRC(CS_OSC),
 258         CLKSRC(PCI)
 259 };
 260
 261 #undef CLKSRC
 262
 263 #define VENDOR_LED_ACT(vendor)                          \
 264 {                                                       \
 265         .vid = PCI_VENDOR_##vendor,                     \
 266         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 267 }
 268
 269 static const struct {
 270 #define PCI_VENDOR_COMPAQ       0x0e11
 271 #define PCI_VENDOR_LINKSYS      0x1737
 272         uint16_t        vid;
 273         uint8_t         led_act[BWI_LED_MAX];
 274 } bwi_vendor_led_act[] = {
 275         VENDOR_LED_ACT(COMPAQ),
 276         VENDOR_LED_ACT(LINKSYS)
 277 #undef PCI_VENDOR_LINKSYS
 278 #undef PCI_VENDOR_COMPAQ
 279 };
 280
 281 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 282         { BWI_VENDOR_LED_ACT_DEFAULT };
 283
 284 #undef VENDOR_LED_ACT
 285
 286 static const struct {
 287         int     on_dur;
 288         int     off_dur;
 289 } bwi_led_duration[109] = {
 290         [0]     = { 400, 100 },
 291         [2]     = { 150, 75 },
 292         [4]     = { 90, 45 },
 293         [11]    = { 66, 34 },
 294         [12]    = { 53, 26 },
 295         [18]    = { 42, 21 },
 296         [22]    = { 35, 17 },
 297         [24]    = { 32, 16 },
 298         [36]    = { 21, 10 },
 299         [48]    = { 16, 8 },
 300         [72]    = { 11, 5 },
 301         [96]    = { 9, 4 },
 302         [108]   = { 7, 3 }
 303 };
 304
 305 #ifdef BWI_DEBUG
 306 #ifdef BWI_DEBUG_VERBOSE
 307 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 308 #else
 309 static uint32_t bwi_debug;
 310 #endif
 311 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 312 #endif  /* BWI_DEBUG */
 313
 314 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 315
 316 uint16_t
 317 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 318 {
 319         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 320 }
 321
 322 static __inline void
 323 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 324                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 325                  int tx)
 326 {
 327         struct bwi_desc32 *desc = &desc_array[desc_idx];
 328         uint32_t ctrl, addr, addr_hi, addr_lo;
 329
 330         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 331         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 332
 333         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 334                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 335
 336         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 337                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 338         if (desc_idx == ndesc - 1)
 339                 ctrl |= BWI_DESC32_C_EOR;
 340         if (tx) {
 341                 /* XXX */
 342                 ctrl |= BWI_DESC32_C_FRAME_START |
 343                         BWI_DESC32_C_FRAME_END |
 344                         BWI_DESC32_C_INTR;
 345         }
 346
 347         desc->addr = htole32(addr);
 348         desc->ctrl = htole32(ctrl);
 349 }
 350
 351 int
 352 bwi_attach(struct bwi_softc *sc)
 353 {
 354         struct ieee80211com *ic;
 355         device_t dev = sc->sc_dev;
 356         struct ifnet *ifp;
 357         struct bwi_mac *mac;
 358         struct bwi_phy *phy;
 359         int i, error;
 360         uint8_t bands;
 361         uint8_t macaddr[IEEE80211_ADDR_LEN];
 362
 363         BWI_LOCK_INIT(sc);
 364
 365         /*
 366          * Initialize taskq and various tasks
 367          */
 368         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
 369                 taskqueue_thread_enqueue, &sc->sc_tq);
 370         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
 371                 device_get_nameunit(dev));
 372         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
 373
 374         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
 375
 376         /*
 377          * Initialize sysctl variables
 378          */
 379         sc->sc_fw_version = BWI_FW_VERSION3;
 380         sc->sc_led_idle = (2350 * hz) / 1000;
 381         sc->sc_led_blink = 1;
 382         sc->sc_txpwr_calib = 1;
 383 #ifdef BWI_DEBUG
 384         sc->sc_debug = bwi_debug;
 385 #endif
 386         bwi_power_on(sc, 1);
 387
 388         error = bwi_bbp_attach(sc);
 389         if (error)
 390                 goto fail;
 391
 392         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 393         if (error)
 394                 goto fail;
 395
 396         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 397                 error = bwi_set_clock_delay(sc);
 398                 if (error)
 399                         goto fail;
 400
 401                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 402                 if (error)
 403                         goto fail;
 404
 405                 error = bwi_get_pwron_delay(sc);
 406                 if (error)
 407                         goto fail;
 408         }
 409
 410         error = bwi_bus_attach(sc);
 411         if (error)
 412                 goto fail;
 413
 414         bwi_get_card_flags(sc);
 415
 416         bwi_led_attach(sc);
 417
 418         for (i = 0; i < sc->sc_nmac; ++i) {
 419                 struct bwi_regwin *old;
 420
 421                 mac = &sc->sc_mac[i];
 422                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 423                 if (error)
 424                         goto fail;
 425
 426                 error = bwi_mac_lateattach(mac);
 427                 if (error)
 428                         goto fail;
 429
 430                 error = bwi_regwin_switch(sc, old, NULL);
 431                 if (error)
 432                         goto fail;
 433         }
 434
 435         /*
 436          * XXX First MAC is known to exist
 437          * TODO2
 438          */
 439         mac = &sc->sc_mac[0];
 440         phy = &mac->mac_phy;
 441
 442         bwi_bbp_power_off(sc);
 443
 444         error = bwi_dma_alloc(sc);
 445         if (error)
 446                 goto fail;
 447
 448         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 449         if (ifp == NULL) {
 450                 device_printf(dev, "can not if_alloc()\n");
 451                 error = ENOSPC;
 452                 goto fail;
 453         }
 454         ic = ifp->if_l2com;
 455
 456         /* set these up early for if_printf use */
 457         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 458
 459         ifp->if_softc = sc;
 460         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 461         ifp->if_init = bwi_init;
 462         ifp->if_ioctl = bwi_ioctl;
 463         ifp->if_start = bwi_start;
 464         ifp->if_watchdog = bwi_watchdog;
 465         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 466         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 467         IFQ_SET_READY(&ifp->if_snd);
 468
 469         /*
 470          * Setup ratesets, phytype, channels and get MAC address
 471          */
 472         bands = 0;
 473         if (phy->phy_mode == IEEE80211_MODE_11B ||
 474             phy->phy_mode == IEEE80211_MODE_11G) {
 475                 setbit(&bands, IEEE80211_MODE_11B);
 476                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 477                         ic->ic_phytype = IEEE80211_T_DS;
 478                 } else {
 479                         ic->ic_phytype = IEEE80211_T_OFDM;
 480                         setbit(&bands, IEEE80211_MODE_11G);
 481                 }
 482
 483                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
 484                 if (IEEE80211_IS_MULTICAST(macaddr)) {
 485                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
 486                         if (IEEE80211_IS_MULTICAST(macaddr)) {
 487                                 device_printf(dev,
 488                                     "invalid MAC address: %6D\n",
 489                                     macaddr, ":");
 490                         }
 491                 }
 492         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 493                 /* TODO:11A */
 494                 setbit(&bands, IEEE80211_MODE_11A);
 495                 error = ENXIO;
 496                 goto fail;
 497         } else {
 498                 panic("unknown phymode %d\n", phy->phy_mode);
 499         }
 500
 501         /* Get locale */
 502         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 503                                    BWI_SPROM_CARD_INFO_LOCALE);
 504         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 505         /* XXX use locale */
 506         ieee80211_init_channels(ic, NULL, &bands);
 507
 508         ic->ic_ifp = ifp;
 509         ic->ic_caps = IEEE80211_C_STA |
 510                       IEEE80211_C_SHSLOT |
 511                       IEEE80211_C_SHPREAMBLE |
 512                       IEEE80211_C_WPA |
 513                       IEEE80211_C_BGSCAN |
 514                       IEEE80211_C_MONITOR;
 515         ic->ic_opmode = IEEE80211_M_STA;
 516         ieee80211_ifattach(ic, macaddr);
 517
 518         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 519
 520         /* override default methods */
 521         ic->ic_vap_create = bwi_vap_create;
 522         ic->ic_vap_delete = bwi_vap_delete;
 523         ic->ic_raw_xmit = bwi_raw_xmit;
 524         ic->ic_updateslot = bwi_updateslot;
 525         ic->ic_scan_start = bwi_scan_start;
 526         ic->ic_scan_end = bwi_scan_end;
 527         ic->ic_set_channel = bwi_set_channel;
 528
 529         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
 530
 531         ieee80211_radiotap_attach(ic,
 532             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
 533                 BWI_TX_RADIOTAP_PRESENT,
 534             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
 535                 BWI_RX_RADIOTAP_PRESENT);
 536
 537         /*
 538          * Add sysctl nodes
 539          */
 540         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 541                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 542                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 543                         "Firmware version");
 544         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 545                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 546                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 547                         "# ticks before LED enters idle state");
 548         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 549                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 550                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 551                        "Allow LED to blink");
 552         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 553                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 554                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 555                        "Enable software TX power calibration");
 556 #ifdef BWI_DEBUG
 557         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 558                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 559                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 560 #endif
 561         if (bootverbose)
 562                 ieee80211_announce(ic);
 563
 564         return (0);
 565 fail:
 566         BWI_LOCK_DESTROY(sc);
 567         return (error);
 568 }
 569
 570 int
 571 bwi_detach(struct bwi_softc *sc)
 572 {
 573         struct ifnet *ifp = sc->sc_ifp;
 574         struct ieee80211com *ic = ifp->if_l2com;
 575         int i;
 576
 577         bwi_stop(sc, 1);
 578         callout_drain(&sc->sc_led_blink_ch);
 579         callout_drain(&sc->sc_calib_ch);
 580         ieee80211_ifdetach(ic);
 581
 582         for (i = 0; i < sc->sc_nmac; ++i)
 583                 bwi_mac_detach(&sc->sc_mac[i]);
 584         bwi_dma_free(sc);
 585         if_free(ifp);
 586         taskqueue_free(sc->sc_tq);
 587
 588         BWI_LOCK_DESTROY(sc);
 589
 590         return (0);
 591 }
 592
 593 static struct ieee80211vap *
 594 bwi_vap_create(struct ieee80211com *ic,
 595         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 596         const uint8_t bssid[IEEE80211_ADDR_LEN],
 597         const uint8_t mac[IEEE80211_ADDR_LEN])
 598 {
 599         struct bwi_vap *bvp;
 600         struct ieee80211vap *vap;
 601
 602         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 603                 return NULL;
 604         bvp = (struct bwi_vap *) malloc(sizeof(struct bwi_vap),
 605             M_80211_VAP, M_WAITOK | M_ZERO);
 606         if (bvp == NULL)
 607                 return NULL;
 608         vap = &bvp->bv_vap;
 609         /* enable s/w bmiss handling for sta mode */
 610         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 611             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 612
 613         /* override default methods */
 614         bvp->bv_newstate = vap->iv_newstate;
 615         vap->iv_newstate = bwi_newstate;
 616 #if 0
 617         vap->iv_update_beacon = bwi_beacon_update;
 618 #endif
 619         ieee80211_ratectl_init(vap);
 620
 621         /* complete setup */
 622         ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status);
 623         ic->ic_opmode = opmode;
 624         return vap;
 625 }
 626
 627 static void
 628 bwi_vap_delete(struct ieee80211vap *vap)
 629 {
 630         struct bwi_vap *bvp = BWI_VAP(vap);
 631
 632         ieee80211_ratectl_deinit(vap);
 633         ieee80211_vap_detach(vap);
 634         free(bvp, M_80211_VAP);
 635 }
 636
 637 void
 638 bwi_suspend(struct bwi_softc *sc)
 639 {
 640         bwi_stop(sc, 1);
 641 }
 642
 643 void
 644 bwi_resume(struct bwi_softc *sc)
 645 {
 646         struct ifnet *ifp = sc->sc_ifp;
 647
 648         if (ifp->if_flags & IFF_UP)
 649                 bwi_init(sc);
 650 }
 651
 652 int
 653 bwi_shutdown(struct bwi_softc *sc)
 654 {
 655         bwi_stop(sc, 1);
 656         return 0;
 657 }
 658
 659 static void
 660 bwi_power_on(struct bwi_softc *sc, int with_pll)
 661 {
 662         uint32_t gpio_in, gpio_out, gpio_en;
 663         uint16_t status;
 664
 665         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 666         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 667                 goto back;
 668
 669         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 670         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 671
 672         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 673         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 674         if (with_pll) {
 675                 /* Turn off PLL first */
 676                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 677                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 678         }
 679
 680         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 681         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 682         DELAY(1000);
 683
 684         if (with_pll) {
 685                 /* Turn on PLL */
 686                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 687                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 688                 DELAY(5000);
 689         }
 690
 691 back:
 692         /* Clear "Signaled Target Abort" */
 693         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 694         status &= ~PCIM_STATUS_STABORT;
 695         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 696 }
 697
 698 static int
 699 bwi_power_off(struct bwi_softc *sc, int with_pll)
 700 {
 701         uint32_t gpio_out, gpio_en;
 702
 703         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 704         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 705         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 706
 707         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 708         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 709         if (with_pll) {
 710                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 711                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 712         }
 713
 714         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 715         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 716         return 0;
 717 }
 718
 719 int
 720 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 721                   struct bwi_regwin **old_rw)
 722 {
 723         int error;
 724
 725         if (old_rw != NULL)
 726                 *old_rw = NULL;
 727
 728         if (!BWI_REGWIN_EXIST(rw))
 729                 return EINVAL;
 730
 731         if (sc->sc_cur_regwin != rw) {
 732                 error = bwi_regwin_select(sc, rw->rw_id);
 733                 if (error) {
 734                         device_printf(sc->sc_dev, "can't select regwin %d\n",
 735                                   rw->rw_id);
 736                         return error;
 737                 }
 738         }
 739
 740         if (old_rw != NULL)
 741                 *old_rw = sc->sc_cur_regwin;
 742         sc->sc_cur_regwin = rw;
 743         return 0;
 744 }
 745
 746 static int
 747 bwi_regwin_select(struct bwi_softc *sc, int id)
 748 {
 749         uint32_t win = BWI_PCIM_REGWIN(id);
 750         int i;
 751
 752 #define RETRY_MAX       50
 753         for (i = 0; i < RETRY_MAX; ++i) {
 754                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 755                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 756                         return 0;
 757                 DELAY(10);
 758         }
 759 #undef RETRY_MAX
 760
 761         return ENXIO;
 762 }
 763
 764 static void
 765 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 766 {
 767         uint32_t val;
 768
 769         val = CSR_READ_4(sc, BWI_ID_HI);
 770         *type = BWI_ID_HI_REGWIN_TYPE(val);
 771         *rev = BWI_ID_HI_REGWIN_REV(val);
 772
 773         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 774                 "vendor 0x%04x\n", *type, *rev,
 775                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 776 }
 777
 778 static int
 779 bwi_bbp_attach(struct bwi_softc *sc)
 780 {
 781 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
 782         uint16_t bbp_id, rw_type;
 783         uint8_t rw_rev;
 784         uint32_t info;
 785         int error, nregwin, i;
 786
 787         /*
 788          * Get 0th regwin information
 789          * NOTE: 0th regwin should exist
 790          */
 791         error = bwi_regwin_select(sc, 0);
 792         if (error) {
 793                 device_printf(sc->sc_dev, "can't select regwin 0\n");
 794                 return error;
 795         }
 796         bwi_regwin_info(sc, &rw_type, &rw_rev);
 797
 798         /*
 799          * Find out BBP id
 800          */
 801         bbp_id = 0;
 802         info = 0;
 803         if (rw_type == BWI_REGWIN_T_COM) {
 804                 info = CSR_READ_4(sc, BWI_INFO);
 805                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
 806
 807                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
 808
 809                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
 810         } else {
 811                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
 812                         if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
 813                             sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
 814                                 bbp_id = bwi_bbpid_map[i].bbp_id;
 815                                 break;
 816                         }
 817                 }
 818                 if (bbp_id == 0) {
 819                         device_printf(sc->sc_dev, "no BBP id for device id "
 820                                       "0x%04x\n", sc->sc_pci_did);
 821                         return ENXIO;
 822                 }
 823
 824                 info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
 825                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
 826         }
 827
 828         /*
 829          * Find out number of regwins
 830          */
 831         nregwin = 0;
 832         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
 833                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
 834         } else {
 835                 for (i = 0; i < N(bwi_regwin_count); ++i) {
 836                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
 837                                 nregwin = bwi_regwin_count[i].nregwin;
 838                                 break;
 839                         }
 840                 }
 841                 if (nregwin == 0) {
 842                         device_printf(sc->sc_dev, "no number of win for "
 843                                       "BBP id 0x%04x\n", bbp_id);
 844                         return ENXIO;
 845                 }
 846         }
 847
 848         /* Record BBP id/rev for later using */
 849         sc->sc_bbp_id = bbp_id;
 850         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
 851         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
 852         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
 853                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
 854
 855         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
 856                 nregwin, sc->sc_cap);
 857
 858         /*
 859          * Create rest of the regwins
 860          */
 861
 862         /* Don't re-create common regwin, if it is already created */
 863         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
 864
 865         for (; i < nregwin; ++i) {
 866                 /*
 867                  * Get regwin information
 868                  */
 869                 error = bwi_regwin_select(sc, i);
 870                 if (error) {
 871                         device_printf(sc->sc_dev,
 872                                       "can't select regwin %d\n", i);
 873                         return error;
 874                 }
 875                 bwi_regwin_info(sc, &rw_type, &rw_rev);
 876
 877                 /*
 878                  * Try attach:
 879                  * 1) Bus (PCI/PCIE) regwin
 880                  * 2) MAC regwin
 881                  * Ignore rest types of regwin
 882                  */
 883                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
 884                     rw_type == BWI_REGWIN_T_BUSPCIE) {
 885                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 886                                 device_printf(sc->sc_dev,
 887                                               "bus regwin already exists\n");
 888                         } else {
 889                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
 890                                                   rw_type, rw_rev);
 891                         }
 892                 } else if (rw_type == BWI_REGWIN_T_MAC) {
 893                         /* XXX ignore return value */
 894                         bwi_mac_attach(sc, i, rw_rev);
 895                 }
 896         }
 897
 898         /* At least one MAC shold exist */
 899         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
 900                 device_printf(sc->sc_dev, "no MAC was found\n");
 901                 return ENXIO;
 902         }
 903         KASSERT(sc->sc_nmac > 0, ("no mac's"));
 904
 905         /* Bus regwin must exist */
 906         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 907                 device_printf(sc->sc_dev, "no bus regwin was found\n");
 908                 return ENXIO;
 909         }
 910
 911         /* Start with first MAC */
 912         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
 913         if (error)
 914                 return error;
 915
 916         return 0;
 917 #undef N
 918 }
 919
 920 int
 921 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
 922 {
 923         struct bwi_regwin *old, *bus;
 924         uint32_t val;
 925         int error;
 926
 927         bus = &sc->sc_bus_regwin;
 928         KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
 929
 930         /*
 931          * Tell bus to generate requested interrupts
 932          */
 933         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 934                 /*
 935                  * NOTE: Read BWI_FLAGS from MAC regwin
 936                  */
 937                 val = CSR_READ_4(sc, BWI_FLAGS);
 938
 939                 error = bwi_regwin_switch(sc, bus, &old);
 940                 if (error)
 941                         return error;
 942
 943                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
 944         } else {
 945                 uint32_t mac_mask;
 946
 947                 mac_mask = 1 << mac->mac_id;
 948
 949                 error = bwi_regwin_switch(sc, bus, &old);
 950                 if (error)
 951                         return error;
 952
 953                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
 954                 val |= mac_mask << 8;
 955                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
 956         }
 957
 958         if (sc->sc_flags & BWI_F_BUS_INITED)
 959                 goto back;
 960
 961         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 962                 /*
 963                  * Enable prefetch and burst
 964                  */
 965                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
 966                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
 967
 968                 if (bus->rw_rev < 5) {
 969                         struct bwi_regwin *com = &sc->sc_com_regwin;
 970
 971                         /*
 972                          * Configure timeouts for bus operation
 973                          */
 974
 975                         /*
 976                          * Set service timeout and request timeout
 977                          */
 978                         CSR_SETBITS_4(sc, BWI_CONF_LO,
 979                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
 980                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
 981
 982                         /*
 983                          * If there is common regwin, we switch to that regwin
 984                          * and switch back to bus regwin once we have done.
 985                          */
 986                         if (BWI_REGWIN_EXIST(com)) {
 987                                 error = bwi_regwin_switch(sc, com, NULL);
 988                                 if (error)
 989                                         return error;
 990                         }
 991
 992                         /* Let bus know what we have changed */
 993                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
 994                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
 995                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
 996                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
 997
 998                         if (BWI_REGWIN_EXIST(com)) {
 999                                 error = bwi_regwin_switch(sc, bus, NULL);
1000                                 if (error)
1001                                         return error;
1002                         }
1003                 } else if (bus->rw_rev >= 11) {
1004                         /*
1005                          * Enable memory read multiple
1006                          */
1007                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1008                 }
1009         } else {
1010                 /* TODO:PCIE */
1011         }
1012
1013         sc->sc_flags |= BWI_F_BUS_INITED;
1014 back:
1015         return bwi_regwin_switch(sc, old, NULL);
1016 }
1017
1018 static void
1019 bwi_get_card_flags(struct bwi_softc *sc)
1020 {
1021 #define PCI_VENDOR_APPLE 0x106b
1022 #define PCI_VENDOR_DELL  0x1028
1023         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1024         if (sc->sc_card_flags == 0xffff)
1025                 sc->sc_card_flags = 0;
1026
1027         if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
1028             sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
1029             sc->sc_pci_revid == 0x74)
1030                 sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
1031
1032         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1033             sc->sc_pci_subdid == 0x4e && /* XXX */
1034             sc->sc_pci_revid > 0x40)
1035                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1036
1037         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1038 #undef PCI_VENDOR_DELL
1039 #undef PCI_VENDOR_APPLE
1040 }
1041
1042 static void
1043 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1044 {
1045         int i;
1046
1047         for (i = 0; i < 3; ++i) {
1048                 *((uint16_t *)eaddr + i) =
1049                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1050         }
1051 }
1052
1053 static void
1054 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1055 {
1056         struct bwi_regwin *com;
1057         uint32_t val;
1058         u_int div;
1059         int src;
1060
1061         bzero(freq, sizeof(*freq));
1062         com = &sc->sc_com_regwin;
1063
1064         KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
1065         KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
1066         KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
1067
1068         /*
1069          * Calculate clock frequency
1070          */
1071         src = -1;
1072         div = 0;
1073         if (com->rw_rev < 6) {
1074                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1075                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1076                         src = BWI_CLKSRC_PCI;
1077                         div = 64;
1078                 } else {
1079                         src = BWI_CLKSRC_CS_OSC;
1080                         div = 32;
1081                 }
1082         } else if (com->rw_rev < 10) {
1083                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1084
1085                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1086                 if (src == BWI_CLKSRC_LP_OSC) {
1087                         div = 1;
1088                 } else {
1089                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1090
1091                         /* Unknown source */
1092                         if (src >= BWI_CLKSRC_MAX)
1093                                 src = BWI_CLKSRC_CS_OSC;
1094                 }
1095         } else {
1096                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1097
1098                 src = BWI_CLKSRC_CS_OSC;
1099                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1100         }
1101
1102         KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
1103         KASSERT(div != 0, ("div zero"));
1104
1105         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1106                 src == BWI_CLKSRC_PCI ? "PCI" :
1107                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1108
1109         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1110         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1111
1112         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1113                 freq->clkfreq_min, freq->clkfreq_max);
1114 }
1115
1116 static int
1117 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1118 {
1119         struct bwi_regwin *old, *com;
1120         uint32_t clk_ctrl, clk_src;
1121         int error, pwr_off = 0;
1122
1123         com = &sc->sc_com_regwin;
1124         if (!BWI_REGWIN_EXIST(com))
1125                 return 0;
1126
1127         if (com->rw_rev >= 10 || com->rw_rev < 6)
1128                 return 0;
1129
1130         /*
1131          * For common regwin whose rev is [6, 10), the chip
1132          * must be capable to change clock mode.
1133          */
1134         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1135                 return 0;
1136
1137         error = bwi_regwin_switch(sc, com, &old);
1138         if (error)
1139                 return error;
1140
1141         if (clk_mode == BWI_CLOCK_MODE_FAST)
1142                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1143
1144         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1145         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1146
1147         switch (clk_mode) {
1148         case BWI_CLOCK_MODE_FAST:
1149                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1150                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1151                 break;
1152         case BWI_CLOCK_MODE_SLOW:
1153                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1154                 break;
1155         case BWI_CLOCK_MODE_DYN:
1156                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1157                               BWI_CLOCK_CTRL_IGNPLL |
1158                               BWI_CLOCK_CTRL_NODYN);
1159                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1160                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1161                         pwr_off = 1;
1162                 }
1163                 break;
1164         }
1165         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1166
1167         if (pwr_off)
1168                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1169
1170         return bwi_regwin_switch(sc, old, NULL);
1171 }
1172
1173 static int
1174 bwi_set_clock_delay(struct bwi_softc *sc)
1175 {
1176         struct bwi_regwin *old, *com;
1177         int error;
1178
1179         com = &sc->sc_com_regwin;
1180         if (!BWI_REGWIN_EXIST(com))
1181                 return 0;
1182
1183         error = bwi_regwin_switch(sc, com, &old);
1184         if (error)
1185                 return error;
1186
1187         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1188                 if (sc->sc_bbp_rev == 0)
1189                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1190                 else if (sc->sc_bbp_rev == 1)
1191                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1192         }
1193
1194         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1195                 if (com->rw_rev >= 10) {
1196                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1197                 } else {
1198                         struct bwi_clock_freq freq;
1199
1200                         bwi_get_clock_freq(sc, &freq);
1201                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1202                                 howmany(freq.clkfreq_max * 150, 1000000));
1203                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1204                                 howmany(freq.clkfreq_max * 15, 1000000));
1205                 }
1206         }
1207
1208         return bwi_regwin_switch(sc, old, NULL);
1209 }
1210
1211 static void
1212 bwi_init(void *xsc)
1213 {
1214         struct bwi_softc *sc = xsc;
1215         struct ifnet *ifp = sc->sc_ifp;
1216         struct ieee80211com *ic = ifp->if_l2com;
1217
1218         BWI_LOCK(sc);
1219         bwi_init_statechg(sc, 1);
1220         BWI_UNLOCK(sc);
1221
1222         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1223                 ieee80211_start_all(ic);                /* start all vap's */
1224 }
1225
1226 static void
1227 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1228 {
1229         struct ifnet *ifp = sc->sc_ifp;
1230         struct bwi_mac *mac;
1231         int error;
1232
1233         bwi_stop_locked(sc, statechg);
1234
1235         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1236
1237         /* TODO: 2 MAC */
1238
1239         mac = &sc->sc_mac[0];
1240         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1241         if (error) {
1242                 if_printf(ifp, "%s: error %d on regwin switch\n",
1243                     __func__, error);
1244                 goto bad;
1245         }
1246         error = bwi_mac_init(mac);
1247         if (error) {
1248                 if_printf(ifp, "%s: error %d on MAC init\n", __func__, error);
1249                 goto bad;
1250         }
1251
1252         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1253
1254         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1255         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, IF_LLADDR(ifp));
1256
1257         bwi_mac_reset_hwkeys(mac);
1258
1259         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1260                 int i;
1261
1262 #define NRETRY  1000
1263                 /*
1264                  * Drain any possible pending TX status
1265                  */
1266                 for (i = 0; i < NRETRY; ++i) {
1267                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1268                              BWI_TXSTATUS0_VALID) == 0)
1269                                 break;
1270                         CSR_READ_4(sc, BWI_TXSTATUS1);
1271                 }
1272                 if (i == NRETRY)
1273                         if_printf(ifp, "%s: can't drain TX status\n", __func__);
1274 #undef NRETRY
1275         }
1276
1277         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1278                 bwi_mac_updateslot(mac, 1);
1279
1280         /* Start MAC */
1281         error = bwi_mac_start(mac);
1282         if (error) {
1283                 if_printf(ifp, "%s: error %d starting MAC\n", __func__, error);
1284                 goto bad;
1285         }
1286
1287         /* Clear stop flag before enabling interrupt */
1288         sc->sc_flags &= ~BWI_F_STOP;
1289
1290         ifp->if_drv_flags |= IFF_DRV_RUNNING;
1291
1292         /* Enable intrs */
1293         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1294         return;
1295 bad:
1296         bwi_stop_locked(sc, 1);
1297 }
1298
1299 static int
1300 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1301 {
1302 #define IS_RUNNING(ifp) \
1303         ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1304         struct bwi_softc *sc = ifp->if_softc;
1305         struct ieee80211com *ic = ifp->if_l2com;
1306         struct ifreq *ifr = (struct ifreq *) data;
1307         int error = 0, startall = 0;
1308
1309         switch (cmd) {
1310         case SIOCSIFFLAGS:
1311                 BWI_LOCK(sc);
1312                 if (IS_RUNNING(ifp)) {
1313                         struct bwi_mac *mac;
1314                         int promisc = -1;
1315
1316                         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1317                             ("current regwin type %d",
1318                             sc->sc_cur_regwin->rw_type));
1319                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1320
1321                         if ((ifp->if_flags & IFF_PROMISC) &&
1322                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1323                                 promisc = 1;
1324                                 sc->sc_flags |= BWI_F_PROMISC;
1325                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1326                                    (sc->sc_flags & BWI_F_PROMISC)) {
1327                                 promisc = 0;
1328                                 sc->sc_flags &= ~BWI_F_PROMISC;
1329                         }
1330
1331                         if (promisc >= 0)
1332                                 bwi_mac_set_promisc(mac, promisc);
1333                 }
1334
1335                 if (ifp->if_flags & IFF_UP) {
1336                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1337                                 bwi_init_statechg(sc, 1);
1338                                 startall = 1;
1339                         }
1340                 } else {
1341                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1342                                 bwi_stop_locked(sc, 1);
1343                 }
1344                 BWI_UNLOCK(sc);
1345                 if (startall)
1346                         ieee80211_start_all(ic);
1347                 break;
1348         case SIOCGIFMEDIA:
1349                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1350                 break;
1351         case SIOCGIFADDR:
1352                 error = ether_ioctl(ifp, cmd, data);
1353                 break;
1354         default:
1355                 error = EINVAL;
1356                 break;
1357         }
1358         return error;
1359 #undef IS_RUNNING
1360 }
1361
1362 static void
1363 bwi_start(struct ifnet *ifp)
1364 {
1365         struct bwi_softc *sc = ifp->if_softc;
1366
1367         BWI_LOCK(sc);
1368         bwi_start_locked(ifp);
1369         BWI_UNLOCK(sc);
1370 }
1371
1372 static void
1373 bwi_start_locked(struct ifnet *ifp)
1374 {
1375         struct bwi_softc *sc = ifp->if_softc;
1376         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1377         struct ieee80211_frame *wh;
1378         struct ieee80211_node *ni;
1379         struct ieee80211_key *k;
1380         struct mbuf *m;
1381         int trans, idx;
1382
1383         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1384                 return;
1385
1386         trans = 0;
1387         idx = tbd->tbd_idx;
1388
1389         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1390                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);       /* XXX: LOCK */
1391                 if (m == NULL)
1392                         break;
1393
1394                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1395                 wh = mtod(m, struct ieee80211_frame *);
1396                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1397                         k = ieee80211_crypto_encap(ni, m);
1398                         if (k == NULL) {
1399                                 ieee80211_free_node(ni);
1400                                 m_freem(m);
1401                                 ifp->if_oerrors++;
1402                                 continue;
1403                         }
1404                 }
1405                 wh = NULL;      /* Catch any invalid use */
1406
1407                 if (bwi_encap(sc, idx, m, ni) != 0) {
1408                         /* 'm' is freed in bwi_encap() if we reach here */
1409                         if (ni != NULL)
1410                                 ieee80211_free_node(ni);
1411                         ifp->if_oerrors++;
1412                         continue;
1413                 }
1414
1415                 trans = 1;
1416                 tbd->tbd_used++;
1417                 idx = (idx + 1) % BWI_TX_NDESC;
1418
1419                 ifp->if_opackets++;
1420
1421                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1422                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1423                         break;
1424                 }
1425         }
1426         tbd->tbd_idx = idx;
1427
1428         if (trans)
1429                 ifp->if_timer = 5;
1430 }
1431
1432 static int
1433 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1434         const struct ieee80211_bpf_params *params)
1435 {
1436         struct ieee80211com *ic = ni->ni_ic;
1437         struct ifnet *ifp = ic->ic_ifp;
1438         struct bwi_softc *sc = ifp->if_softc;
1439         /* XXX wme? */
1440         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1441         int idx, error;
1442
1443         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1444                 ieee80211_free_node(ni);
1445                 m_freem(m);
1446                 return ENETDOWN;
1447         }
1448
1449         BWI_LOCK(sc);
1450         idx = tbd->tbd_idx;
1451         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
1452         if (params == NULL) {
1453                 /*
1454                  * Legacy path; interpret frame contents to decide
1455                  * precisely how to send the frame.
1456                  */
1457                 error = bwi_encap(sc, idx, m, ni);
1458         } else {
1459                 /*
1460                  * Caller supplied explicit parameters to use in
1461                  * sending the frame.
1462                  */
1463                 error = bwi_encap_raw(sc, idx, m, ni, params);
1464         }
1465         if (error == 0) {
1466                 ifp->if_opackets++;
1467                 if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
1468                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1469                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
1470                 ifp->if_timer = 5;
1471         } else {
1472                 /* NB: m is reclaimed on encap failure */
1473                 ieee80211_free_node(ni);
1474                 ifp->if_oerrors++;
1475         }
1476         BWI_UNLOCK(sc);
1477         return error;
1478 }
1479
1480 static void
1481 bwi_watchdog(struct ifnet *ifp)
1482 {
1483         struct bwi_softc *sc = ifp->if_softc;
1484
1485         BWI_LOCK(sc);
1486         if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1487                 if_printf(ifp, "watchdog timeout\n");
1488                 ifp->if_oerrors++;
1489                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1490         }
1491         BWI_UNLOCK(sc);
1492 }
1493
1494 static void
1495 bwi_stop(struct bwi_softc *sc, int statechg)
1496 {
1497         BWI_LOCK(sc);
1498         bwi_stop_locked(sc, statechg);
1499         BWI_UNLOCK(sc);
1500 }
1501
1502 static void
1503 bwi_stop_locked(struct bwi_softc *sc, int statechg)
1504 {
1505         struct ifnet *ifp = sc->sc_ifp;
1506         struct bwi_mac *mac;
1507         int i, error, pwr_off = 0;
1508
1509         BWI_ASSERT_LOCKED(sc);
1510
1511         callout_stop(&sc->sc_calib_ch);
1512         callout_stop(&sc->sc_led_blink_ch);
1513         sc->sc_led_blinking = 0;
1514         sc->sc_flags |= BWI_F_STOP;
1515
1516         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1517                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1518                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1519                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1520
1521                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1522                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1523                 bwi_mac_stop(mac);
1524         }
1525
1526         for (i = 0; i < sc->sc_nmac; ++i) {
1527                 struct bwi_regwin *old_rw;
1528
1529                 mac = &sc->sc_mac[i];
1530                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1531                         continue;
1532
1533                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1534                 if (error)
1535                         continue;
1536
1537                 bwi_mac_shutdown(mac);
1538                 pwr_off = 1;
1539
1540                 bwi_regwin_switch(sc, old_rw, NULL);
1541         }
1542
1543         if (pwr_off)
1544                 bwi_bbp_power_off(sc);
1545
1546         sc->sc_tx_timer = 0;
1547         ifp->if_timer = 0;
1548         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1549 }
1550
1551 void
1552 bwi_intr(void *xsc)
1553 {
1554         struct bwi_softc *sc = xsc;
1555         struct ifnet *ifp = sc->sc_ifp;
1556         struct bwi_mac *mac;
1557         uint32_t intr_status;
1558         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1559         int i, txrx_error, tx = 0, rx_data = -1;
1560
1561         BWI_LOCK(sc);
1562
1563         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1564             (sc->sc_flags & BWI_F_STOP)) {
1565                 BWI_UNLOCK(sc);
1566                 return;
1567         }
1568         /*
1569          * Get interrupt status
1570          */
1571         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1572         if (intr_status == 0xffffffff) {        /* Not for us */
1573                 BWI_UNLOCK(sc);
1574                 return;
1575         }
1576
1577         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1578
1579         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1580         if (intr_status == 0) {         /* Nothing is interesting */
1581                 BWI_UNLOCK(sc);
1582                 return;
1583         }
1584
1585         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1586             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1587         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1588
1589         txrx_error = 0;
1590         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1591         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1592                 uint32_t mask;
1593
1594                 if (BWI_TXRX_IS_RX(i))
1595                         mask = BWI_TXRX_RX_INTRS;
1596                 else
1597                         mask = BWI_TXRX_TX_INTRS;
1598
1599                 txrx_intr_status[i] =
1600                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1601
1602                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1603                          i, txrx_intr_status[i]);
1604
1605                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1606                         if_printf(ifp,
1607                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
1608                             __func__, i, txrx_intr_status[i]);
1609                         txrx_error = 1;
1610                 }
1611         }
1612         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1613
1614         /*
1615          * Acknowledge interrupt
1616          */
1617         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1618
1619         for (i = 0; i < BWI_TXRX_NRING; ++i)
1620                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1621
1622         /* Disable all interrupts */
1623         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1624
1625         /*
1626          * http://bcm-specs.sipsolutions.net/Interrupts
1627          * Says for this bit (0x800):
1628          * "Fatal Error
1629          *
1630          * We got this one while testing things when by accident the
1631          * template ram wasn't set to big endian when it should have
1632          * been after writing the initial values. It keeps on being
1633          * triggered, the only way to stop it seems to shut down the
1634          * chip."
1635          *
1636          * Suggesting that we should never get it and if we do we're not
1637          * feeding TX packets into the MAC correctly if we do...  Apparently,
1638          * it is valid only on mac version 5 and higher, but I couldn't
1639          * find a reference for that...  Since I see them from time to time
1640          * on my card, this suggests an error in the tx path still...
1641          */
1642         if (intr_status & BWI_INTR_PHY_TXERR) {
1643                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1644                         if_printf(ifp, "%s: intr PHY TX error\n", __func__);
1645                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1646                         BWI_UNLOCK(sc);
1647                         return;
1648                 }
1649         }
1650
1651         if (txrx_error) {
1652                 /* TODO: reset device */
1653         }
1654
1655         if (intr_status & BWI_INTR_TBTT)
1656                 bwi_mac_config_ps(mac);
1657
1658         if (intr_status & BWI_INTR_EO_ATIM)
1659                 if_printf(ifp, "EO_ATIM\n");
1660
1661         if (intr_status & BWI_INTR_PMQ) {
1662                 for (;;) {
1663                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1664                                 break;
1665                 }
1666                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1667         }
1668
1669         if (intr_status & BWI_INTR_NOISE)
1670                 if_printf(ifp, "intr noise\n");
1671
1672         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
1673                 rx_data = sc->sc_rxeof(sc);
1674                 if (sc->sc_flags & BWI_F_STOP) {
1675                         BWI_UNLOCK(sc);
1676                         return;
1677                 }
1678         }
1679
1680         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1681                 sc->sc_txeof_status(sc);
1682                 tx = 1;
1683         }
1684
1685         if (intr_status & BWI_INTR_TX_DONE) {
1686                 bwi_txeof(sc);
1687                 tx = 1;
1688         }
1689
1690         /* Re-enable interrupts */
1691         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1692
1693         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1694                 int evt = BWI_LED_EVENT_NONE;
1695
1696                 if (tx && rx_data > 0) {
1697                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1698                                 evt = BWI_LED_EVENT_RX;
1699                         else
1700                                 evt = BWI_LED_EVENT_TX;
1701                 } else if (tx) {
1702                         evt = BWI_LED_EVENT_TX;
1703                 } else if (rx_data > 0) {
1704                         evt = BWI_LED_EVENT_RX;
1705                 } else if (rx_data == 0) {
1706                         evt = BWI_LED_EVENT_POLL;
1707                 }
1708
1709                 if (evt != BWI_LED_EVENT_NONE)
1710                         bwi_led_event(sc, evt);
1711         }
1712
1713         BWI_UNLOCK(sc);
1714 }
1715
1716 static void
1717 bwi_scan_start(struct ieee80211com *ic)
1718 {
1719         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1720
1721         BWI_LOCK(sc);
1722         /* Enable MAC beacon promiscuity */
1723         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1724         BWI_UNLOCK(sc);
1725 }
1726
1727 static void
1728 bwi_set_channel(struct ieee80211com *ic)
1729 {
1730         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1731         struct ieee80211_channel *c = ic->ic_curchan;
1732         struct bwi_mac *mac;
1733
1734         BWI_LOCK(sc);
1735         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1736             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1737         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1738         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
1739
1740         sc->sc_rates = ieee80211_get_ratetable(c);
1741
1742         /*
1743          * Setup radio tap channel freq and flags
1744          */
1745         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
1746                 htole16(c->ic_freq);
1747         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
1748                 htole16(c->ic_flags & 0xffff);
1749
1750         BWI_UNLOCK(sc);
1751 }
1752
1753 static void
1754 bwi_scan_end(struct ieee80211com *ic)
1755 {
1756         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1757
1758         BWI_LOCK(sc);
1759         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1760         BWI_UNLOCK(sc);
1761 }
1762
1763 static int
1764 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1765 {
1766         struct bwi_vap *bvp = BWI_VAP(vap);
1767         const struct ieee80211_txparam *tp;
1768         struct ieee80211com *ic= vap->iv_ic;
1769         struct ifnet *ifp = ic->ic_ifp;
1770         enum ieee80211_state ostate = vap->iv_state;
1771         struct bwi_softc *sc = ifp->if_softc;
1772         struct bwi_mac *mac;
1773         int error;
1774
1775         BWI_LOCK(sc);
1776
1777         callout_stop(&sc->sc_calib_ch);
1778
1779         if (nstate == IEEE80211_S_INIT)
1780                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1781
1782         bwi_led_newstate(sc, nstate);
1783
1784         error = bvp->bv_newstate(vap, nstate, arg);
1785         if (error != 0)
1786                 goto back;
1787
1788         /*
1789          * Clear the BSSID when we stop a STA
1790          */
1791         if (vap->iv_opmode == IEEE80211_M_STA) {
1792                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
1793                         /*
1794                          * Clear out the BSSID.  If we reassociate to
1795                          * the same AP, this will reinialize things
1796                          * correctly...
1797                          */
1798                         if (ic->ic_opmode == IEEE80211_M_STA &&
1799                             !(sc->sc_flags & BWI_F_STOP))
1800                                 bwi_set_bssid(sc, bwi_zero_addr);
1801                 }
1802         }
1803
1804         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1805                 /* Nothing to do */
1806         } else if (nstate == IEEE80211_S_RUN) {
1807                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
1808
1809                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1810                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1811                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1812
1813                 /* Initial TX power calibration */
1814                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1815 #ifdef notyet
1816                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1817 #else
1818                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1819 #endif
1820
1821                 /* Initializes ratectl for a node. */
1822                 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1823                 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
1824                         ieee80211_ratectl_node_init(vap->iv_bss);
1825
1826                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1827         }
1828 back:
1829         BWI_UNLOCK(sc);
1830
1831         return error;
1832 }
1833
1834 static int
1835 bwi_media_change(struct ifnet *ifp)
1836 {
1837         int error = ieee80211_media_change(ifp);
1838         /* NB: only the fixed rate can change and that doesn't need a reset */
1839         return (error == ENETRESET ? 0 : error);
1840 }
1841
1842 static int
1843 bwi_dma_alloc(struct bwi_softc *sc)
1844 {
1845         int error, i, has_txstats;
1846         bus_addr_t lowaddr = 0;
1847         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1848         uint32_t txrx_ctrl_step = 0;
1849
1850         has_txstats = 0;
1851         for (i = 0; i < sc->sc_nmac; ++i) {
1852                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1853                         has_txstats = 1;
1854                         break;
1855                 }
1856         }
1857
1858         switch (sc->sc_bus_space) {
1859         case BWI_BUS_SPACE_30BIT:
1860         case BWI_BUS_SPACE_32BIT:
1861                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1862                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1863                 else
1864                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1865                 desc_sz = sizeof(struct bwi_desc32);
1866                 txrx_ctrl_step = 0x20;
1867
1868                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1869                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1870                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1871                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1872                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1873                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1874                 sc->sc_rxeof = bwi_rxeof32;
1875                 sc->sc_start_tx = bwi_start_tx32;
1876                 if (has_txstats) {
1877                         sc->sc_init_txstats = bwi_init_txstats32;
1878                         sc->sc_free_txstats = bwi_free_txstats32;
1879                         sc->sc_txeof_status = bwi_txeof_status32;
1880                 }
1881                 break;
1882
1883         case BWI_BUS_SPACE_64BIT:
1884                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
1885                 desc_sz = sizeof(struct bwi_desc64);
1886                 txrx_ctrl_step = 0x40;
1887
1888                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
1889                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
1890                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
1891                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
1892                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
1893                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
1894                 sc->sc_rxeof = bwi_rxeof64;
1895                 sc->sc_start_tx = bwi_start_tx64;
1896                 if (has_txstats) {
1897                         sc->sc_init_txstats = bwi_init_txstats64;
1898                         sc->sc_free_txstats = bwi_free_txstats64;
1899                         sc->sc_txeof_status = bwi_txeof_status64;
1900                 }
1901                 break;
1902         }
1903
1904         KASSERT(lowaddr != 0, ("lowaddr zero"));
1905         KASSERT(desc_sz != 0, ("desc_sz zero"));
1906         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
1907
1908         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
1909         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
1910
1911         /*
1912          * Create top level DMA tag
1913          */
1914         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
1915                                BWI_ALIGN, 0,            /* alignment, bounds */
1916                                lowaddr,                 /* lowaddr */
1917                                BUS_SPACE_MAXADDR,       /* highaddr */
1918                                NULL, NULL,              /* filter, filterarg */
1919                                MAXBSIZE,                /* maxsize */
1920                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
1921                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1922                                BUS_DMA_ALLOCNOW,        /* flags */
1923                                NULL, NULL,              /* lockfunc, lockarg */
1924                                &sc->sc_parent_dtag);
1925         if (error) {
1926                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
1927                 return error;
1928         }
1929
1930 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
1931
1932         /*
1933          * Create TX ring DMA stuffs
1934          */
1935         error = bus_dma_tag_create(sc->sc_parent_dtag,
1936                                 BWI_RING_ALIGN, 0,
1937                                 BUS_SPACE_MAXADDR,
1938                                 BUS_SPACE_MAXADDR,
1939                                 NULL, NULL,
1940                                 tx_ring_sz,
1941                                 1,
1942                                 BUS_SPACE_MAXSIZE_32BIT,
1943                                 BUS_DMA_ALLOCNOW,
1944                                 NULL, NULL,
1945                                 &sc->sc_txring_dtag);
1946         if (error) {
1947                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
1948                 return error;
1949         }
1950
1951         for (i = 0; i < BWI_TX_NRING; ++i) {
1952                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
1953                                            &sc->sc_tx_rdata[i], tx_ring_sz,
1954                                            TXRX_CTRL(i));
1955                 if (error) {
1956                         device_printf(sc->sc_dev, "%dth TX ring "
1957                                       "DMA alloc failed\n", i);
1958                         return error;
1959                 }
1960         }
1961
1962         /*
1963          * Create RX ring DMA stuffs
1964          */
1965         error = bus_dma_tag_create(sc->sc_parent_dtag,
1966                                 BWI_RING_ALIGN, 0,
1967                                 BUS_SPACE_MAXADDR,
1968                                 BUS_SPACE_MAXADDR,
1969                                 NULL, NULL,
1970                                 rx_ring_sz,
1971                                 1,
1972                                 BUS_SPACE_MAXSIZE_32BIT,
1973                                 BUS_DMA_ALLOCNOW,
1974                                 NULL, NULL,
1975                                 &sc->sc_rxring_dtag);
1976         if (error) {
1977                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
1978                 return error;
1979         }
1980
1981         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
1982                                    rx_ring_sz, TXRX_CTRL(0));
1983         if (error) {
1984                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
1985                 return error;
1986         }
1987
1988         if (has_txstats) {
1989                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
1990                 if (error) {
1991                         device_printf(sc->sc_dev,
1992                                       "TX stats DMA alloc failed\n");
1993                         return error;
1994                 }
1995         }
1996
1997 #undef TXRX_CTRL
1998
1999         return bwi_dma_mbuf_create(sc);
2000 }
2001
2002 static void
2003 bwi_dma_free(struct bwi_softc *sc)
2004 {
2005         if (sc->sc_txring_dtag != NULL) {
2006                 int i;
2007
2008                 for (i = 0; i < BWI_TX_NRING; ++i) {
2009                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2010
2011                         if (rd->rdata_desc != NULL) {
2012                                 bus_dmamap_unload(sc->sc_txring_dtag,
2013                                                   rd->rdata_dmap);
2014                                 bus_dmamem_free(sc->sc_txring_dtag,
2015                                                 rd->rdata_desc,
2016                                                 rd->rdata_dmap);
2017                         }
2018                 }
2019                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2020         }
2021
2022         if (sc->sc_rxring_dtag != NULL) {
2023                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2024
2025                 if (rd->rdata_desc != NULL) {
2026                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2027                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2028                                         rd->rdata_dmap);
2029                 }
2030                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2031         }
2032
2033         bwi_dma_txstats_free(sc);
2034         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2035
2036         if (sc->sc_parent_dtag != NULL)
2037                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2038 }
2039
2040 static int
2041 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2042                    struct bwi_ring_data *rd, bus_size_t size,
2043                    uint32_t txrx_ctrl)
2044 {
2045         int error;
2046
2047         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2048                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2049                                  &rd->rdata_dmap);
2050         if (error) {
2051                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2052                 return error;
2053         }
2054
2055         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2056                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2057                                 BUS_DMA_NOWAIT);
2058         if (error) {
2059                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2060                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2061                 rd->rdata_desc = NULL;
2062                 return error;
2063         }
2064
2065         rd->rdata_txrx_ctrl = txrx_ctrl;
2066         return 0;
2067 }
2068
2069 static int
2070 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2071                       bus_size_t desc_sz)
2072 {
2073         struct bwi_txstats_data *st;
2074         bus_size_t dma_size;
2075         int error;
2076
2077         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
2078         if (st == NULL) {
2079                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
2080                 return ENOMEM;
2081         }
2082         sc->sc_txstats = st;
2083
2084         /*
2085          * Create TX stats descriptor DMA stuffs
2086          */
2087         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2088
2089         error = bus_dma_tag_create(sc->sc_parent_dtag,
2090                                 BWI_RING_ALIGN,
2091                                 0,
2092                                 BUS_SPACE_MAXADDR,
2093                                 BUS_SPACE_MAXADDR,
2094                                 NULL, NULL,
2095                                 dma_size,
2096                                 1,
2097                                 BUS_SPACE_MAXSIZE_32BIT,
2098                                 BUS_DMA_ALLOCNOW,
2099                                 NULL, NULL,
2100                                 &st->stats_ring_dtag);
2101         if (error) {
2102                 device_printf(sc->sc_dev, "can't create txstats ring "
2103                               "DMA tag\n");
2104                 return error;
2105         }
2106
2107         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2108                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2109                                  &st->stats_ring_dmap);
2110         if (error) {
2111                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2112                               "DMA mem\n");
2113                 bus_dma_tag_destroy(st->stats_ring_dtag);
2114                 st->stats_ring_dtag = NULL;
2115                 return error;
2116         }
2117
2118         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2119                                 st->stats_ring, dma_size,
2120                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2121                                 BUS_DMA_NOWAIT);
2122         if (error) {
2123                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2124                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2125                                 st->stats_ring_dmap);
2126                 bus_dma_tag_destroy(st->stats_ring_dtag);
2127                 st->stats_ring_dtag = NULL;
2128                 return error;
2129         }
2130
2131         /*
2132          * Create TX stats DMA stuffs
2133          */
2134         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2135                            BWI_ALIGN);
2136
2137         error = bus_dma_tag_create(sc->sc_parent_dtag,
2138                                 BWI_ALIGN,
2139                                 0,
2140                                 BUS_SPACE_MAXADDR,
2141                                 BUS_SPACE_MAXADDR,
2142                                 NULL, NULL,
2143                                 dma_size,
2144                                 1,
2145                                 BUS_SPACE_MAXSIZE_32BIT,
2146                                 BUS_DMA_ALLOCNOW,
2147                                 NULL, NULL,
2148                                 &st->stats_dtag);
2149         if (error) {
2150                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2151                 return error;
2152         }
2153
2154         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2155                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2156                                  &st->stats_dmap);
2157         if (error) {
2158                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2159                 bus_dma_tag_destroy(st->stats_dtag);
2160                 st->stats_dtag = NULL;
2161                 return error;
2162         }
2163
2164         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2165                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2166                                 BUS_DMA_NOWAIT);
2167         if (error) {
2168                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2169                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2170                 bus_dma_tag_destroy(st->stats_dtag);
2171                 st->stats_dtag = NULL;
2172                 return error;
2173         }
2174
2175         st->stats_ctrl_base = ctrl_base;
2176         return 0;
2177 }
2178
2179 static void
2180 bwi_dma_txstats_free(struct bwi_softc *sc)
2181 {
2182         struct bwi_txstats_data *st;
2183
2184         if (sc->sc_txstats == NULL)
2185                 return;
2186         st = sc->sc_txstats;
2187
2188         if (st->stats_ring_dtag != NULL) {
2189                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2190                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2191                                 st->stats_ring_dmap);
2192                 bus_dma_tag_destroy(st->stats_ring_dtag);
2193         }
2194
2195         if (st->stats_dtag != NULL) {
2196                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2197                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2198                 bus_dma_tag_destroy(st->stats_dtag);
2199         }
2200
2201         free(st, M_DEVBUF);
2202 }
2203
2204 static void
2205 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2206 {
2207         KASSERT(nseg == 1, ("too many segments\n"));
2208         *((bus_addr_t *)arg) = seg->ds_addr;
2209 }
2210
2211 static int
2212 bwi_dma_mbuf_create(struct bwi_softc *sc)
2213 {
2214         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2215         int i, j, k, ntx, error;
2216
2217         /*
2218          * Create TX/RX mbuf DMA tag
2219          */
2220         error = bus_dma_tag_create(sc->sc_parent_dtag,
2221                                 1,
2222                                 0,
2223                                 BUS_SPACE_MAXADDR,
2224                                 BUS_SPACE_MAXADDR,
2225                                 NULL, NULL,
2226                                 MCLBYTES,
2227                                 1,
2228                                 BUS_SPACE_MAXSIZE_32BIT,
2229                                 BUS_DMA_ALLOCNOW,
2230                                 NULL, NULL,
2231                                 &sc->sc_buf_dtag);
2232         if (error) {
2233                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2234                 return error;
2235         }
2236
2237         ntx = 0;
2238
2239         /*
2240          * Create TX mbuf DMA map
2241          */
2242         for (i = 0; i < BWI_TX_NRING; ++i) {
2243                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2244
2245                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2246                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2247                                                   &tbd->tbd_buf[j].tb_dmap);
2248                         if (error) {
2249                                 device_printf(sc->sc_dev, "can't create "
2250                                               "%dth tbd, %dth DMA map\n", i, j);
2251
2252                                 ntx = i;
2253                                 for (k = 0; k < j; ++k) {
2254                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2255                                                 tbd->tbd_buf[k].tb_dmap);
2256                                 }
2257                                 goto fail;
2258                         }
2259                 }
2260         }
2261         ntx = BWI_TX_NRING;
2262
2263         /*
2264          * Create RX mbuf DMA map and a spare DMA map
2265          */
2266         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2267                                   &rbd->rbd_tmp_dmap);
2268         if (error) {
2269                 device_printf(sc->sc_dev,
2270                               "can't create spare RX buf DMA map\n");
2271                 goto fail;
2272         }
2273
2274         for (j = 0; j < BWI_RX_NDESC; ++j) {
2275                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2276                                           &rbd->rbd_buf[j].rb_dmap);
2277                 if (error) {
2278                         device_printf(sc->sc_dev, "can't create %dth "
2279                                       "RX buf DMA map\n", j);
2280
2281                         for (k = 0; k < j; ++k) {
2282                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2283                                         rbd->rbd_buf[j].rb_dmap);
2284                         }
2285                         bus_dmamap_destroy(sc->sc_buf_dtag,
2286                                            rbd->rbd_tmp_dmap);
2287                         goto fail;
2288                 }
2289         }
2290
2291         return 0;
2292 fail:
2293         bwi_dma_mbuf_destroy(sc, ntx, 0);
2294         return error;
2295 }
2296
2297 static void
2298 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2299 {
2300         int i, j;
2301
2302         if (sc->sc_buf_dtag == NULL)
2303                 return;
2304
2305         for (i = 0; i < ntx; ++i) {
2306                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2307
2308                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2309                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2310
2311                         if (tb->tb_mbuf != NULL) {
2312                                 bus_dmamap_unload(sc->sc_buf_dtag,
2313                                                   tb->tb_dmap);
2314                                 m_freem(tb->tb_mbuf);
2315                         }
2316                         if (tb->tb_ni != NULL)
2317                                 ieee80211_free_node(tb->tb_ni);
2318                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2319                 }
2320         }
2321
2322         if (nrx) {
2323                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2324
2325                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2326                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2327                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2328
2329                         if (rb->rb_mbuf != NULL) {
2330                                 bus_dmamap_unload(sc->sc_buf_dtag,
2331                                                   rb->rb_dmap);
2332                                 m_freem(rb->rb_mbuf);
2333                         }
2334                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2335                 }
2336         }
2337
2338         bus_dma_tag_destroy(sc->sc_buf_dtag);
2339         sc->sc_buf_dtag = NULL;
2340 }
2341
2342 static void
2343 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2344 {
2345         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2346 }
2347
2348 static void
2349 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2350 {
2351         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2352 }
2353
2354 static int
2355 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2356 {
2357         struct bwi_ring_data *rd;
2358         struct bwi_txbuf_data *tbd;
2359         uint32_t val, addr_hi, addr_lo;
2360
2361         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2362         rd = &sc->sc_tx_rdata[ring_idx];
2363         tbd = &sc->sc_tx_bdata[ring_idx];
2364
2365         tbd->tbd_idx = 0;
2366         tbd->tbd_used = 0;
2367
2368         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2369         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2370                         BUS_DMASYNC_PREWRITE);
2371
2372         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2373         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2374
2375         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2376               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2377                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2378         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2379
2380         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2381               BWI_TXRX32_CTRL_ENABLE;
2382         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2383
2384         return 0;
2385 }
2386
2387 static void
2388 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2389                        bus_addr_t paddr, int hdr_size, int ndesc)
2390 {
2391         uint32_t val, addr_hi, addr_lo;
2392
2393         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2394         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2395
2396         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2397               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2398                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2399         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2400
2401         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2402               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2403               BWI_TXRX32_CTRL_ENABLE;
2404         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2405
2406         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2407                     (ndesc - 1) * sizeof(struct bwi_desc32));
2408 }
2409
2410 static int
2411 bwi_init_rx_ring32(struct bwi_softc *sc)
2412 {
2413         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2414         int i, error;
2415
2416         sc->sc_rx_bdata.rbd_idx = 0;
2417
2418         for (i = 0; i < BWI_RX_NDESC; ++i) {
2419                 error = bwi_newbuf(sc, i, 1);
2420                 if (error) {
2421                         device_printf(sc->sc_dev,
2422                                   "can't allocate %dth RX buffer\n", i);
2423                         return error;
2424                 }
2425         }
2426         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2427                         BUS_DMASYNC_PREWRITE);
2428
2429         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2430                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2431         return 0;
2432 }
2433
2434 static int
2435 bwi_init_txstats32(struct bwi_softc *sc)
2436 {
2437         struct bwi_txstats_data *st = sc->sc_txstats;
2438         bus_addr_t stats_paddr;
2439         int i;
2440
2441         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2442         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2443
2444         st->stats_idx = 0;
2445
2446         stats_paddr = st->stats_paddr;
2447         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2448                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2449                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2450                 stats_paddr += sizeof(struct bwi_txstats);
2451         }
2452         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2453                         BUS_DMASYNC_PREWRITE);
2454
2455         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2456                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2457         return 0;
2458 }
2459
2460 static void
2461 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2462                     int buf_len)
2463 {
2464         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2465
2466         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2467         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2468                          paddr, buf_len, 0);
2469 }
2470
2471 static void
2472 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2473                     int buf_idx, bus_addr_t paddr, int buf_len)
2474 {
2475         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
2476         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2477                          paddr, buf_len, 1);
2478 }
2479
2480 static int
2481 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2482 {
2483         /* TODO:64 */
2484         return EOPNOTSUPP;
2485 }
2486
2487 static int
2488 bwi_init_rx_ring64(struct bwi_softc *sc)
2489 {
2490         /* TODO:64 */
2491         return EOPNOTSUPP;
2492 }
2493
2494 static int
2495 bwi_init_txstats64(struct bwi_softc *sc)
2496 {
2497         /* TODO:64 */
2498         return EOPNOTSUPP;
2499 }
2500
2501 static void
2502 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2503                     int buf_len)
2504 {
2505         /* TODO:64 */
2506 }
2507
2508 static void
2509 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2510                     int buf_idx, bus_addr_t paddr, int buf_len)
2511 {
2512         /* TODO:64 */
2513 }
2514
2515 static void
2516 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2517                  bus_size_t mapsz __unused, int error)
2518 {
2519         if (!error) {
2520                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2521                 *((bus_addr_t *)arg) = seg->ds_addr;
2522         }
2523 }
2524
2525 static int
2526 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2527 {
2528         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2529         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2530         struct bwi_rxbuf_hdr *hdr;
2531         bus_dmamap_t map;
2532         bus_addr_t paddr;
2533         struct mbuf *m;
2534         int error;
2535
2536         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2537
2538         m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
2539         if (m == NULL) {
2540                 error = ENOBUFS;
2541
2542                 /*
2543                  * If the NIC is up and running, we need to:
2544                  * - Clear RX buffer's header.
2545                  * - Restore RX descriptor settings.
2546                  */
2547                 if (init)
2548                         return error;
2549                 else
2550                         goto back;
2551         }
2552         m->m_len = m->m_pkthdr.len = MCLBYTES;
2553
2554         /*
2555          * Try to load RX buf into temporary DMA map
2556          */
2557         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2558                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
2559         if (error) {
2560                 m_freem(m);
2561
2562                 /*
2563                  * See the comment above
2564                  */
2565                 if (init)
2566                         return error;
2567                 else
2568                         goto back;
2569         }
2570
2571         if (!init)
2572                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2573         rxbuf->rb_mbuf = m;
2574         rxbuf->rb_paddr = paddr;
2575
2576         /*
2577          * Swap RX buf's DMA map with the loaded temporary one
2578          */
2579         map = rxbuf->rb_dmap;
2580         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2581         rbd->rbd_tmp_dmap = map;
2582
2583 back:
2584         /*
2585          * Clear RX buf header
2586          */
2587         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2588         bzero(hdr, sizeof(*hdr));
2589         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2590
2591         /*
2592          * Setup RX buf descriptor
2593          */
2594         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2595                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2596         return error;
2597 }
2598
2599 static void
2600 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2601                     const uint8_t *addr)
2602 {
2603         int i;
2604
2605         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2606                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2607
2608         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2609                 uint16_t addr_val;
2610
2611                 addr_val = (uint16_t)addr[i * 2] |
2612                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2613                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2614         }
2615 }
2616
2617 static int
2618 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2619 {
2620         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2621         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2622         struct ifnet *ifp = sc->sc_ifp;
2623         struct ieee80211com *ic = ifp->if_l2com;
2624         int idx, rx_data = 0;
2625
2626         idx = rbd->rbd_idx;
2627         while (idx != end_idx) {
2628                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2629                 struct bwi_rxbuf_hdr *hdr;
2630                 struct ieee80211_frame_min *wh;
2631                 struct ieee80211_node *ni;
2632                 struct mbuf *m;
2633                 const void *plcp;
2634                 uint16_t flags2;
2635                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
2636
2637                 m = rb->rb_mbuf;
2638                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2639                                 BUS_DMASYNC_POSTREAD);
2640
2641                 if (bwi_newbuf(sc, idx, 0)) {
2642                         ifp->if_ierrors++;
2643                         goto next;
2644                 }
2645
2646                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2647                 flags2 = le16toh(hdr->rxh_flags2);
2648
2649                 hdr_extra = 0;
2650                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2651                         hdr_extra = 2;
2652                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2653
2654                 buflen = le16toh(hdr->rxh_buflen);
2655                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2656                         if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
2657                                   __func__, hdr_extra);
2658                         ifp->if_ierrors++;
2659                         m_freem(m);
2660                         goto next;
2661                 }
2662
2663                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2664                 rssi = bwi_calc_rssi(sc, hdr);
2665                 noise = bwi_calc_noise(sc);
2666
2667                 m->m_pkthdr.rcvif = ifp;
2668                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2669                 m_adj(m, sizeof(*hdr) + wh_ofs);
2670
2671                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2672                         rate = bwi_ofdm_plcp2rate(plcp);
2673                 else
2674                         rate = bwi_ds_plcp2rate(plcp);
2675
2676                 /* RX radio tap */
2677                 if (ieee80211_radiotap_active(ic))
2678                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi, noise);
2679
2680                 m_adj(m, -IEEE80211_CRC_LEN);
2681
2682                 BWI_UNLOCK(sc);
2683
2684                 wh = mtod(m, struct ieee80211_frame_min *);
2685                 ni = ieee80211_find_rxnode(ic, wh);
2686                 if (ni != NULL) {
2687                         type = ieee80211_input(ni, m, rssi - noise, noise);
2688                         ieee80211_free_node(ni);
2689                 } else
2690                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
2691                 if (type == IEEE80211_FC0_TYPE_DATA) {
2692                         rx_data = 1;
2693                         sc->sc_rx_rate = rate;
2694                 }
2695
2696                 BWI_LOCK(sc);
2697 next:
2698                 idx = (idx + 1) % BWI_RX_NDESC;
2699
2700                 if (sc->sc_flags & BWI_F_STOP) {
2701                         /*
2702                          * Take the fast lane, don't do
2703                          * any damage to softc
2704                          */
2705                         return -1;
2706                 }
2707         }
2708
2709         rbd->rbd_idx = idx;
2710         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2711                         BUS_DMASYNC_PREWRITE);
2712
2713         return rx_data;
2714 }
2715
2716 static int
2717 bwi_rxeof32(struct bwi_softc *sc)
2718 {
2719         uint32_t val, rx_ctrl;
2720         int end_idx, rx_data;
2721
2722         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2723
2724         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2725         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2726                   sizeof(struct bwi_desc32);
2727
2728         rx_data = bwi_rxeof(sc, end_idx);
2729         if (rx_data >= 0) {
2730                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2731                             end_idx * sizeof(struct bwi_desc32));
2732         }
2733         return rx_data;
2734 }
2735
2736 static int
2737 bwi_rxeof64(struct bwi_softc *sc)
2738 {
2739         /* TODO:64 */
2740         return 0;
2741 }
2742
2743 static void
2744 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2745 {
2746         int i;
2747
2748         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2749
2750 #define NRETRY 10
2751
2752         for (i = 0; i < NRETRY; ++i) {
2753                 uint32_t status;
2754
2755                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2756                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2757                     BWI_RX32_STATUS_STATE_DISABLED)
2758                         break;
2759
2760                 DELAY(1000);
2761         }
2762         if (i == NRETRY)
2763                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
2764
2765 #undef NRETRY
2766
2767         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2768 }
2769
2770 static void
2771 bwi_free_txstats32(struct bwi_softc *sc)
2772 {
2773         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2774 }
2775
2776 static void
2777 bwi_free_rx_ring32(struct bwi_softc *sc)
2778 {
2779         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2780         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2781         int i;
2782
2783         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2784
2785         for (i = 0; i < BWI_RX_NDESC; ++i) {
2786                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2787
2788                 if (rb->rb_mbuf != NULL) {
2789                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2790                         m_freem(rb->rb_mbuf);
2791                         rb->rb_mbuf = NULL;
2792                 }
2793         }
2794 }
2795
2796 static void
2797 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2798 {
2799         struct bwi_ring_data *rd;
2800         struct bwi_txbuf_data *tbd;
2801         struct ifnet *ifp = sc->sc_ifp;
2802         uint32_t state, val;
2803         int i;
2804
2805         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2806         rd = &sc->sc_tx_rdata[ring_idx];
2807         tbd = &sc->sc_tx_bdata[ring_idx];
2808
2809 #define NRETRY 10
2810
2811         for (i = 0; i < NRETRY; ++i) {
2812                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2813                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2814                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2815                     state == BWI_TX32_STATUS_STATE_IDLE ||
2816                     state == BWI_TX32_STATUS_STATE_STOPPED)
2817                         break;
2818
2819                 DELAY(1000);
2820         }
2821         if (i == NRETRY) {
2822                 if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
2823                           __func__, ring_idx);
2824         }
2825
2826         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2827         for (i = 0; i < NRETRY; ++i) {
2828                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2829                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2830                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2831                         break;
2832
2833                 DELAY(1000);
2834         }
2835         if (i == NRETRY)
2836                 if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
2837                      __func__, ring_idx);
2838
2839 #undef NRETRY
2840
2841         DELAY(1000);
2842
2843         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2844
2845         for (i = 0; i < BWI_TX_NDESC; ++i) {
2846                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2847
2848                 if (tb->tb_mbuf != NULL) {
2849                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2850                         m_freem(tb->tb_mbuf);
2851                         tb->tb_mbuf = NULL;
2852                 }
2853                 if (tb->tb_ni != NULL) {
2854                         ieee80211_free_node(tb->tb_ni);
2855                         tb->tb_ni = NULL;
2856                 }
2857         }
2858 }
2859
2860 static void
2861 bwi_free_txstats64(struct bwi_softc *sc)
2862 {
2863         /* TODO:64 */
2864 }
2865
2866 static void
2867 bwi_free_rx_ring64(struct bwi_softc *sc)
2868 {
2869         /* TODO:64 */
2870 }
2871
2872 static void
2873 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2874 {
2875         /* TODO:64 */
2876 }
2877
2878 /* XXX does not belong here */
2879 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
2880 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
2881
2882 static __inline void
2883 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
2884 {
2885         uint32_t plcp;
2886
2887         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
2888                     IEEE80211_OFDM_PLCP_RATE_MASK) |
2889                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
2890         *plcp0 = htole32(plcp);
2891 }
2892
2893 static __inline void
2894 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
2895                    uint8_t rate)
2896 {
2897         int len, service, pkt_bitlen;
2898
2899         pkt_bitlen = pkt_len * NBBY;
2900         len = howmany(pkt_bitlen * 2, rate);
2901
2902         service = IEEE80211_PLCP_SERVICE_LOCKED;
2903         if (rate == (11 * 2)) {
2904                 int pkt_bitlen1;
2905
2906                 /*
2907                  * PLCP service field needs to be adjusted,
2908                  * if TX rate is 11Mbytes/s
2909                  */
2910                 pkt_bitlen1 = len * 11;
2911                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
2912                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
2913         }
2914
2915         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
2916         plcp->i_service = service;
2917         plcp->i_length = htole16(len);
2918         /* NOTE: do NOT touch i_crc */
2919 }
2920
2921 static __inline void
2922 bwi_plcp_header(const struct ieee80211_rate_table *rt,
2923         void *plcp, int pkt_len, uint8_t rate)
2924 {
2925         enum ieee80211_phytype modtype;
2926
2927         /*
2928          * Assume caller has zeroed 'plcp'
2929          */
2930         modtype = ieee80211_rate2phytype(rt, rate);
2931         if (modtype == IEEE80211_T_OFDM)
2932                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
2933         else if (modtype == IEEE80211_T_DS)
2934                 bwi_ds_plcp_header(plcp, pkt_len, rate);
2935         else
2936                 panic("unsupport modulation type %u\n", modtype);
2937 }
2938
2939 static int
2940 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2941           struct ieee80211_node *ni)
2942 {
2943         struct ieee80211vap *vap = ni->ni_vap;
2944         struct ifnet *ifp = sc->sc_ifp;
2945         struct ieee80211com *ic = ifp->if_l2com;
2946         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2947         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2948         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
2949         struct bwi_mac *mac;
2950         struct bwi_txbuf_hdr *hdr;
2951         struct ieee80211_frame *wh;
2952         const struct ieee80211_txparam *tp;
2953         uint8_t rate, rate_fb;
2954         uint32_t mac_ctrl;
2955         uint16_t phy_ctrl;
2956         bus_addr_t paddr;
2957         int type, ismcast, pkt_len, error, rix;
2958 #if 0
2959         const uint8_t *p;
2960         int i;
2961 #endif
2962
2963         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
2964             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
2965         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2966
2967         wh = mtod(m, struct ieee80211_frame *);
2968         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2969         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2970
2971         /* Get 802.11 frame len before prepending TX header */
2972         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
2973
2974         /*
2975          * Find TX rate
2976          */
2977         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
2978         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
2979                 rate = rate_fb = tp->mgmtrate;
2980         } else if (ismcast) {
2981                 rate = rate_fb = tp->mcastrate;
2982         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
2983                 rate = rate_fb = tp->ucastrate;
2984         } else {
2985                 rix = ieee80211_ratectl_rate(ni, NULL, pkt_len);
2986                 rate = ni->ni_txrate;
2987
2988                 if (rix > 0) {
2989                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
2990                                   IEEE80211_RATE_VAL;
2991                 } else {
2992                         rate_fb = rate;
2993                 }
2994         }
2995         tb->tb_rate[0] = rate;
2996         tb->tb_rate[1] = rate_fb;
2997         sc->sc_tx_rate = rate;
2998
2999         /*
3000          * TX radio tap
3001          */
3002         if (ieee80211_radiotap_active_vap(vap)) {
3003                 sc->sc_tx_th.wt_flags = 0;
3004                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3005                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3006                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
3007                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3008                     rate != (1 * 2)) {
3009                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3010                 }
3011                 sc->sc_tx_th.wt_rate = rate;
3012
3013                 ieee80211_radiotap_tx(vap, m);
3014         }
3015
3016         /*
3017          * Setup the embedded TX header
3018          */
3019         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
3020         if (m == NULL) {
3021                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3022                 return ENOBUFS;
3023         }
3024         hdr = mtod(m, struct bwi_txbuf_hdr *);
3025
3026         bzero(hdr, sizeof(*hdr));
3027
3028         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3029         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3030
3031         if (!ismcast) {
3032                 uint16_t dur;
3033
3034                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
3035                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
3036
3037                 hdr->txh_fb_duration = htole16(dur);
3038         }
3039
3040         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3041                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3042
3043         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3044         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3045
3046         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3047                              BWI_TXH_PHY_C_ANTMODE_MASK);
3048         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
3049                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3050         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3051                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3052
3053         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3054         if (!ismcast)
3055                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3056         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
3057                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3058
3059         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3060         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3061
3062         /* Catch any further usage */
3063         hdr = NULL;
3064         wh = NULL;
3065
3066         /* DMA load */
3067         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3068                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3069         if (error && error != EFBIG) {
3070                 if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3071                     __func__, error);
3072                 goto back;
3073         }
3074
3075         if (error) {    /* error == EFBIG */
3076                 struct mbuf *m_new;
3077
3078                 m_new = m_defrag(m, M_DONTWAIT);
3079                 if (m_new == NULL) {
3080                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3081                             __func__);
3082                         error = ENOBUFS;
3083                         goto back;
3084                 } else {
3085                         m = m_new;
3086                 }
3087
3088                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3089                                              bwi_dma_buf_addr, &paddr,
3090                                              BUS_DMA_NOWAIT);
3091                 if (error) {
3092                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3093                             __func__, error);
3094                         goto back;
3095                 }
3096         }
3097         error = 0;
3098
3099         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3100
3101         tb->tb_mbuf = m;
3102         tb->tb_ni = ni;
3103
3104 #if 0
3105         p = mtod(m, const uint8_t *);
3106         for (i = 0; i < m->m_pkthdr.len; ++i) {
3107                 if (i != 0 && i % 8 == 0)
3108                         printf("\n");
3109                 printf("%02x ", p[i]);
3110         }
3111         printf("\n");
3112 #endif
3113         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3114                 idx, pkt_len, m->m_pkthdr.len);
3115
3116         /* Setup TX descriptor */
3117         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3118         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3119                         BUS_DMASYNC_PREWRITE);
3120
3121         /* Kick start */
3122         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3123
3124 back:
3125         if (error)
3126                 m_freem(m);
3127         return error;
3128 }
3129
3130 static int
3131 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
3132           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
3133 {
3134         struct ifnet *ifp = sc->sc_ifp;
3135         struct ieee80211vap *vap = ni->ni_vap;
3136         struct ieee80211com *ic = ni->ni_ic;
3137         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3138         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3139         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3140         struct bwi_mac *mac;
3141         struct bwi_txbuf_hdr *hdr;
3142         struct ieee80211_frame *wh;
3143         uint8_t rate, rate_fb;
3144         uint32_t mac_ctrl;
3145         uint16_t phy_ctrl;
3146         bus_addr_t paddr;
3147         int ismcast, pkt_len, error;
3148
3149         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3150             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3151         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3152
3153         wh = mtod(m, struct ieee80211_frame *);
3154         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
3155
3156         /* Get 802.11 frame len before prepending TX header */
3157         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3158
3159         /*
3160          * Find TX rate
3161          */
3162         rate = params->ibp_rate0;
3163         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
3164                 /* XXX fall back to mcast/mgmt rate? */
3165                 m_freem(m);
3166                 return EINVAL;
3167         }
3168         if (params->ibp_try1 != 0) {
3169                 rate_fb = params->ibp_rate1;
3170                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
3171                         /* XXX fall back to rate0? */
3172                         m_freem(m);
3173                         return EINVAL;
3174                 }
3175         } else
3176                 rate_fb = rate;
3177         tb->tb_rate[0] = rate;
3178         tb->tb_rate[1] = rate_fb;
3179         sc->sc_tx_rate = rate;
3180
3181         /*
3182          * TX radio tap
3183          */
3184         if (ieee80211_radiotap_active_vap(vap)) {
3185                 sc->sc_tx_th.wt_flags = 0;
3186                 /* XXX IEEE80211_BPF_CRYPTO */
3187                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3188                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3189                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3190                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3191                 sc->sc_tx_th.wt_rate = rate;
3192
3193                 ieee80211_radiotap_tx(vap, m);
3194         }
3195
3196         /*
3197          * Setup the embedded TX header
3198          */
3199         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
3200         if (m == NULL) {
3201                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3202                 return ENOBUFS;
3203         }
3204         hdr = mtod(m, struct bwi_txbuf_hdr *);
3205
3206         bzero(hdr, sizeof(*hdr));
3207
3208         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3209         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3210
3211         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3212         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
3213                 uint16_t dur;
3214
3215                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
3216
3217                 hdr->txh_fb_duration = htole16(dur);
3218                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3219         }
3220
3221         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3222                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3223
3224         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3225         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3226
3227         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3228                              BWI_TXH_PHY_C_ANTMODE_MASK);
3229         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
3230                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3231                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3232         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3233                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3234
3235         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3236         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3237
3238         /* Catch any further usage */
3239         hdr = NULL;
3240         wh = NULL;
3241
3242         /* DMA load */
3243         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3244                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3245         if (error != 0) {
3246                 struct mbuf *m_new;
3247
3248                 if (error != EFBIG) {
3249                         if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3250                             __func__, error);
3251                         goto back;
3252                 }
3253                 m_new = m_defrag(m, M_DONTWAIT);
3254                 if (m_new == NULL) {
3255                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3256                             __func__);
3257                         error = ENOBUFS;
3258                         goto back;
3259                 }
3260                 m = m_new;
3261                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3262                                              bwi_dma_buf_addr, &paddr,
3263                                              BUS_DMA_NOWAIT);
3264                 if (error) {
3265                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3266                             __func__, error);
3267                         goto back;
3268                 }
3269         }
3270
3271         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3272
3273         tb->tb_mbuf = m;
3274         tb->tb_ni = ni;
3275
3276         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3277                 idx, pkt_len, m->m_pkthdr.len);
3278
3279         /* Setup TX descriptor */
3280         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3281         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3282                         BUS_DMASYNC_PREWRITE);
3283
3284         /* Kick start */
3285         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3286 back:
3287         if (error)
3288                 m_freem(m);
3289         return error;
3290 }
3291
3292 static void
3293 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3294 {
3295         idx = (idx + 1) % BWI_TX_NDESC;
3296         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3297                     idx * sizeof(struct bwi_desc32));
3298 }
3299
3300 static void
3301 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3302 {
3303         /* TODO:64 */
3304 }
3305
3306 static void
3307 bwi_txeof_status32(struct bwi_softc *sc)
3308 {
3309         struct ifnet *ifp = sc->sc_ifp;
3310         uint32_t val, ctrl_base;
3311         int end_idx;
3312
3313         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3314
3315         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3316         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3317                   sizeof(struct bwi_desc32);
3318
3319         bwi_txeof_status(sc, end_idx);
3320
3321         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3322                     end_idx * sizeof(struct bwi_desc32));
3323
3324         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3325                 ifp->if_start(ifp);
3326 }
3327
3328 static void
3329 bwi_txeof_status64(struct bwi_softc *sc)
3330 {
3331         /* TODO:64 */
3332 }
3333
3334 static void
3335 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3336 {
3337         struct ifnet *ifp = sc->sc_ifp;
3338         struct bwi_txbuf_data *tbd;
3339         struct bwi_txbuf *tb;
3340         int ring_idx, buf_idx;
3341         struct ieee80211_node *ni;
3342         struct ieee80211vap *vap;
3343
3344         if (tx_id == 0) {
3345                 if_printf(ifp, "%s: zero tx id\n", __func__);
3346                 return;
3347         }
3348
3349         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3350         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3351
3352         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
3353         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
3354
3355         tbd = &sc->sc_tx_bdata[ring_idx];
3356         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
3357         tbd->tbd_used--;
3358
3359         tb = &tbd->tbd_buf[buf_idx];
3360         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3361                 "acked %d, data_txcnt %d, ni %p\n",
3362                 buf_idx, acked, data_txcnt, tb->tb_ni);
3363
3364         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3365
3366         ni = tb->tb_ni;
3367         if (tb->tb_ni != NULL) {
3368                 const struct bwi_txbuf_hdr *hdr =
3369                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
3370                 vap = ni->ni_vap;
3371
3372                 /* NB: update rate control only for unicast frames */
3373                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
3374                         /*
3375                          * Feed back 'acked and data_txcnt'.  Note that the
3376                          * generic AMRR code only understands one tx rate
3377                          * and the estimator doesn't handle real retry counts
3378                          * well so to avoid over-aggressive downshifting we
3379                          * treat any number of retries as "1".
3380                          */
3381                         ieee80211_ratectl_tx_complete(vap, ni,
3382                             (data_txcnt > 1) ? IEEE80211_RATECTL_TX_SUCCESS :
3383                                 IEEE80211_RATECTL_TX_FAILURE, &acked, NULL);
3384                 }
3385
3386                 /*
3387                  * Do any tx complete callback.  Note this must
3388                  * be done before releasing the node reference.
3389                  */
3390                 if (tb->tb_mbuf->m_flags & M_TXCB)
3391                         ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
3392
3393                 ieee80211_free_node(tb->tb_ni);
3394                 tb->tb_ni = NULL;
3395         }
3396         m_freem(tb->tb_mbuf);
3397         tb->tb_mbuf = NULL;
3398
3399         if (tbd->tbd_used == 0)
3400                 ifp->if_timer = 0;
3401
3402         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3403 }
3404
3405 static void
3406 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3407 {
3408         struct bwi_txstats_data *st = sc->sc_txstats;
3409         int idx;
3410
3411         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3412
3413         idx = st->stats_idx;
3414         while (idx != end_idx) {
3415                 const struct bwi_txstats *stats = &st->stats[idx];
3416
3417                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3418                         int data_txcnt;
3419
3420                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3421                                                 BWI_TXS_TXCNT_DATA);
3422                         _bwi_txeof(sc, le16toh(stats->txs_id),
3423                                    stats->txs_flags & BWI_TXS_F_ACKED,
3424                                    data_txcnt);
3425                 }
3426                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3427         }
3428         st->stats_idx = idx;
3429 }
3430
3431 static void
3432 bwi_txeof(struct bwi_softc *sc)
3433 {
3434         struct ifnet *ifp = sc->sc_ifp;
3435
3436         for (;;) {
3437                 uint32_t tx_status0, tx_status1;
3438                 uint16_t tx_id;
3439                 int data_txcnt;
3440
3441                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3442                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3443                         break;
3444                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3445
3446                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3447                 data_txcnt = __SHIFTOUT(tx_status0,
3448                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3449
3450                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3451                         continue;
3452
3453                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
3454                     data_txcnt);
3455         }
3456
3457         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3458                 ifp->if_start(ifp);
3459 }
3460
3461 static int
3462 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3463 {
3464         bwi_power_on(sc, 1);
3465         return bwi_set_clock_mode(sc, clk_mode);
3466 }
3467
3468 static void
3469 bwi_bbp_power_off(struct bwi_softc *sc)
3470 {
3471         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3472         bwi_power_off(sc, 1);
3473 }
3474
3475 static int
3476 bwi_get_pwron_delay(struct bwi_softc *sc)
3477 {
3478         struct bwi_regwin *com, *old;
3479         struct bwi_clock_freq freq;
3480         uint32_t val;
3481         int error;
3482
3483         com = &sc->sc_com_regwin;
3484         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
3485
3486         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3487                 return 0;
3488
3489         error = bwi_regwin_switch(sc, com, &old);
3490         if (error)
3491                 return error;
3492
3493         bwi_get_clock_freq(sc, &freq);
3494
3495         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3496         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3497         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3498
3499         return bwi_regwin_switch(sc, old, NULL);
3500 }
3501
3502 static int
3503 bwi_bus_attach(struct bwi_softc *sc)
3504 {
3505         struct bwi_regwin *bus, *old;
3506         int error;
3507
3508         bus = &sc->sc_bus_regwin;
3509
3510         error = bwi_regwin_switch(sc, bus, &old);
3511         if (error)
3512                 return error;
3513
3514         if (!bwi_regwin_is_enabled(sc, bus))
3515                 bwi_regwin_enable(sc, bus, 0);
3516
3517         /* Disable interripts */
3518         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3519
3520         return bwi_regwin_switch(sc, old, NULL);
3521 }
3522
3523 static const char *
3524 bwi_regwin_name(const struct bwi_regwin *rw)
3525 {
3526         switch (rw->rw_type) {
3527         case BWI_REGWIN_T_COM:
3528                 return "COM";
3529         case BWI_REGWIN_T_BUSPCI:
3530                 return "PCI";
3531         case BWI_REGWIN_T_MAC:
3532                 return "MAC";
3533         case BWI_REGWIN_T_BUSPCIE:
3534                 return "PCIE";
3535         }
3536         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3537         return NULL;
3538 }
3539
3540 static uint32_t
3541 bwi_regwin_disable_bits(struct bwi_softc *sc)
3542 {
3543         uint32_t busrev;
3544
3545         /* XXX cache this */
3546         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3547         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3548                 "bus rev %u\n", busrev);
3549
3550         if (busrev == BWI_BUSREV_0)
3551                 return BWI_STATE_LO_DISABLE1;
3552         else if (busrev == BWI_BUSREV_1)
3553                 return BWI_STATE_LO_DISABLE2;
3554         else
3555                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3556 }
3557
3558 int
3559 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3560 {
3561         uint32_t val, disable_bits;
3562
3563         disable_bits = bwi_regwin_disable_bits(sc);
3564         val = CSR_READ_4(sc, BWI_STATE_LO);
3565
3566         if ((val & (BWI_STATE_LO_CLOCK |
3567                     BWI_STATE_LO_RESET |
3568                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3569                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3570                         bwi_regwin_name(rw));
3571                 return 1;
3572         } else {
3573                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3574                         bwi_regwin_name(rw));
3575                 return 0;
3576         }
3577 }
3578
3579 void
3580 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3581 {
3582         uint32_t state_lo, disable_bits;
3583         int i;
3584
3585         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3586
3587         /*
3588          * If current regwin is in 'reset' state, it was already disabled.
3589          */
3590         if (state_lo & BWI_STATE_LO_RESET) {
3591                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3592                         "%s was already disabled\n", bwi_regwin_name(rw));
3593                 return;
3594         }
3595
3596         disable_bits = bwi_regwin_disable_bits(sc);
3597
3598         /*
3599          * Disable normal clock
3600          */
3601         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3602         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3603
3604         /*
3605          * Wait until normal clock is disabled
3606          */
3607 #define NRETRY  1000
3608         for (i = 0; i < NRETRY; ++i) {
3609                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3610                 if (state_lo & disable_bits)
3611                         break;
3612                 DELAY(10);
3613         }
3614         if (i == NRETRY) {
3615                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3616                               bwi_regwin_name(rw));
3617         }
3618
3619         for (i = 0; i < NRETRY; ++i) {
3620                 uint32_t state_hi;
3621
3622                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3623                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3624                         break;
3625                 DELAY(10);
3626         }
3627         if (i == NRETRY) {
3628                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3629                               bwi_regwin_name(rw));
3630         }
3631 #undef NRETRY
3632
3633         /*
3634          * Reset and disable regwin with gated clock
3635          */
3636         state_lo = BWI_STATE_LO_RESET | disable_bits |
3637                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3638                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3639         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3640
3641         /* Flush pending bus write */
3642         CSR_READ_4(sc, BWI_STATE_LO);
3643         DELAY(1);
3644
3645         /* Reset and disable regwin */
3646         state_lo = BWI_STATE_LO_RESET | disable_bits |
3647                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3648         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3649
3650         /* Flush pending bus write */
3651         CSR_READ_4(sc, BWI_STATE_LO);
3652         DELAY(1);
3653 }
3654
3655 void
3656 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3657 {
3658         uint32_t state_lo, state_hi, imstate;
3659
3660         bwi_regwin_disable(sc, rw, flags);
3661
3662         /* Reset regwin with gated clock */
3663         state_lo = BWI_STATE_LO_RESET |
3664                    BWI_STATE_LO_CLOCK |
3665                    BWI_STATE_LO_GATED_CLOCK |
3666                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3667         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3668
3669         /* Flush pending bus write */
3670         CSR_READ_4(sc, BWI_STATE_LO);
3671         DELAY(1);
3672
3673         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3674         if (state_hi & BWI_STATE_HI_SERROR)
3675                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3676
3677         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3678         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3679                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3680                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3681         }
3682
3683         /* Enable regwin with gated clock */
3684         state_lo = BWI_STATE_LO_CLOCK |
3685                    BWI_STATE_LO_GATED_CLOCK |
3686                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3687         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3688
3689         /* Flush pending bus write */
3690         CSR_READ_4(sc, BWI_STATE_LO);
3691         DELAY(1);
3692
3693         /* Enable regwin with normal clock */
3694         state_lo = BWI_STATE_LO_CLOCK |
3695                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3696         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3697
3698         /* Flush pending bus write */
3699         CSR_READ_4(sc, BWI_STATE_LO);
3700         DELAY(1);
3701 }
3702
3703 static void
3704 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3705 {
3706         struct ifnet *ifp = sc->sc_ifp;
3707         struct bwi_mac *mac;
3708         struct bwi_myaddr_bssid buf;
3709         const uint8_t *p;
3710         uint32_t val;
3711         int n, i;
3712
3713         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3714             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3715         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3716
3717         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3718
3719         bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
3720         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3721
3722         n = sizeof(buf) / sizeof(val);
3723         p = (const uint8_t *)&buf;
3724         for (i = 0; i < n; ++i) {
3725                 int j;
3726
3727                 val = 0;
3728                 for (j = 0; j < sizeof(val); ++j)
3729                         val |= ((uint32_t)(*p++)) << (j * 8);
3730
3731                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3732         }
3733 }
3734
3735 static void
3736 bwi_updateslot(struct ifnet *ifp)
3737 {
3738         struct bwi_softc *sc = ifp->if_softc;
3739         struct ieee80211com *ic = ifp->if_l2com;
3740         struct bwi_mac *mac;
3741
3742         BWI_LOCK(sc);
3743         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
3744                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3745
3746                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3747                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3748                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3749
3750                 bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3751         }
3752         BWI_UNLOCK(sc);
3753 }
3754
3755 static void
3756 bwi_calibrate(void *xsc)
3757 {
3758         struct bwi_softc *sc = xsc;
3759 #ifdef INVARIANTS
3760         struct ifnet *ifp = sc->sc_ifp;
3761         struct ieee80211com *ic = ifp->if_l2com;
3762 #endif
3763         struct bwi_mac *mac;
3764
3765         BWI_ASSERT_LOCKED(sc);
3766
3767         KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
3768             ("opmode %d", ic->ic_opmode));
3769
3770         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3771             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3772         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3773
3774         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3775         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3776
3777         /* XXX 15 seconds */
3778         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3779 }
3780
3781 static int
3782 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3783 {
3784         struct bwi_mac *mac;
3785
3786         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3787             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3788         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3789
3790         return bwi_rf_calc_rssi(mac, hdr);
3791 }
3792
3793 static int
3794 bwi_calc_noise(struct bwi_softc *sc)
3795 {
3796         struct bwi_mac *mac;
3797
3798         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3799             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3800         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3801
3802         return bwi_rf_calc_noise(mac);
3803 }
3804
3805 static __inline uint8_t
3806 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
3807 {
3808         uint32_t plcp;
3809         uint8_t plcp_rate;
3810
3811         plcp = le32toh(*plcp0);
3812         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
3813         return ieee80211_plcp2rate(plcp_rate, IEEE80211_T_OFDM);
3814 }
3815
3816 static __inline uint8_t
3817 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
3818 {
3819         return ieee80211_plcp2rate(hdr->i_signal, IEEE80211_T_DS);
3820 }
3821
3822 static void
3823 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3824     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
3825 {
3826         const struct ieee80211_frame_min *wh;
3827
3828         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3829         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3830                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3831
3832         wh = mtod(m, const struct ieee80211_frame_min *);
3833         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3834                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3835
3836         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3837         sc->sc_rx_th.wr_rate = rate;
3838         sc->sc_rx_th.wr_antsignal = rssi;
3839         sc->sc_rx_th.wr_antnoise = noise;
3840 }
3841
3842 static void
3843 bwi_led_attach(struct bwi_softc *sc)
3844 {
3845         const uint8_t *led_act = NULL;
3846         uint16_t gpio, val[BWI_LED_MAX];
3847         int i;
3848
3849 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3850
3851         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3852                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3853                         led_act = bwi_vendor_led_act[i].led_act;
3854                         break;
3855                 }
3856         }
3857         if (led_act == NULL)
3858                 led_act = bwi_default_led_act;
3859
3860 #undef N
3861
3862         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3863         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3864         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3865
3866         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3867         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3868         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3869
3870         for (i = 0; i < BWI_LED_MAX; ++i) {
3871                 struct bwi_led *led = &sc->sc_leds[i];
3872
3873                 if (val[i] == 0xff) {
3874                         led->l_act = led_act[i];
3875                 } else {
3876                         if (val[i] & BWI_LED_ACT_LOW)
3877                                 led->l_flags |= BWI_LED_F_ACTLOW;
3878                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3879                 }
3880                 led->l_mask = (1 << i);
3881
3882                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3883                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3884                     led->l_act == BWI_LED_ACT_BLINK) {
3885                         led->l_flags |= BWI_LED_F_BLINK;
3886                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3887                                 led->l_flags |= BWI_LED_F_POLLABLE;
3888                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3889                                 led->l_flags |= BWI_LED_F_SLOW;
3890
3891                         if (sc->sc_blink_led == NULL) {
3892                                 sc->sc_blink_led = led;
3893                                 if (led->l_flags & BWI_LED_F_SLOW)
3894                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3895                         }
3896                 }
3897
3898                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3899                         "%dth led, act %d, lowact %d\n", i,
3900                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3901         }
3902         callout_init(&sc->sc_led_blink_ch, CALLOUT_MPSAFE);
3903 }
3904
3905 static __inline uint16_t
3906 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3907 {
3908         if (led->l_flags & BWI_LED_F_ACTLOW)
3909                 on = !on;
3910         if (on)
3911                 val |= led->l_mask;
3912         else
3913                 val &= ~led->l_mask;
3914         return val;
3915 }
3916
3917 static void
3918 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3919 {
3920         struct ifnet *ifp = sc->sc_ifp;
3921         struct ieee80211com *ic = ifp->if_l2com;
3922         uint16_t val;
3923         int i;
3924
3925         if (nstate == IEEE80211_S_INIT) {
3926                 callout_stop(&sc->sc_led_blink_ch);
3927                 sc->sc_led_blinking = 0;
3928         }
3929
3930         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
3931                 return;
3932
3933         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3934         for (i = 0; i < BWI_LED_MAX; ++i) {
3935                 struct bwi_led *led = &sc->sc_leds[i];
3936                 int on;
3937
3938                 if (led->l_act == BWI_LED_ACT_UNKN ||
3939                     led->l_act == BWI_LED_ACT_NULL)
3940                         continue;
3941
3942                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3943                     nstate != IEEE80211_S_INIT)
3944                         continue;
3945
3946                 switch (led->l_act) {
3947                 case BWI_LED_ACT_ON:    /* Always on */
3948                         on = 1;
3949                         break;
3950                 case BWI_LED_ACT_OFF:   /* Always off */
3951                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
3952                         on = 0;
3953                         break;
3954                 default:
3955                         on = 1;
3956                         switch (nstate) {
3957                         case IEEE80211_S_INIT:
3958                                 on = 0;
3959                                 break;
3960                         case IEEE80211_S_RUN:
3961                                 if (led->l_act == BWI_LED_ACT_11G &&
3962                                     ic->ic_curmode != IEEE80211_MODE_11G)
3963                                         on = 0;
3964                                 break;
3965                         default:
3966                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3967                                         on = 0;
3968                                 break;
3969                         }
3970                         break;
3971                 }
3972
3973                 val = bwi_led_onoff(led, val, on);
3974         }
3975         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3976 }
3977 static void
3978 bwi_led_event(struct bwi_softc *sc, int event)
3979 {
3980         struct bwi_led *led = sc->sc_blink_led;
3981         int rate;
3982
3983         if (event == BWI_LED_EVENT_POLL) {
3984                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3985                         return;
3986                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3987                         return;
3988         }
3989
3990         sc->sc_led_ticks = ticks;
3991         if (sc->sc_led_blinking)
3992                 return;
3993
3994         switch (event) {
3995         case BWI_LED_EVENT_RX:
3996                 rate = sc->sc_rx_rate;
3997                 break;
3998         case BWI_LED_EVENT_TX:
3999                 rate = sc->sc_tx_rate;
4000                 break;
4001         case BWI_LED_EVENT_POLL:
4002                 rate = 0;
4003                 break;
4004         default:
4005                 panic("unknown LED event %d\n", event);
4006                 break;
4007         }
4008         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
4009             bwi_led_duration[rate].off_dur);
4010 }
4011
4012 static void
4013 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
4014 {
4015         struct bwi_led *led = sc->sc_blink_led;
4016         uint16_t val;
4017
4018         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4019         val = bwi_led_onoff(led, val, 1);
4020         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4021
4022         if (led->l_flags & BWI_LED_F_SLOW) {
4023                 BWI_LED_SLOWDOWN(on_dur);
4024                 BWI_LED_SLOWDOWN(off_dur);
4025         }
4026
4027         sc->sc_led_blinking = 1;
4028         sc->sc_led_blink_offdur = off_dur;
4029
4030         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
4031 }
4032
4033 static void
4034 bwi_led_blink_next(void *xsc)
4035 {
4036         struct bwi_softc *sc = xsc;
4037         uint16_t val;
4038
4039         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4040         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
4041         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4042
4043         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
4044             bwi_led_blink_end, sc);
4045 }
4046
4047 static void
4048 bwi_led_blink_end(void *xsc)
4049 {
4050         struct bwi_softc *sc = xsc;
4051         sc->sc_led_blinking = 0;
4052 }
4053
4054 static void
4055 bwi_restart(void *xsc, int pending)
4056 {
4057         struct bwi_softc *sc = xsc;
4058         struct ifnet *ifp = sc->sc_ifp;
4059
4060         if_printf(ifp, "%s begin, help!\n", __func__);
4061         BWI_LOCK(sc);
4062         bwi_init_statechg(xsc, 0);
4063 #if 0
4064         bwi_start_locked(ifp);
4065 #endif
4066         BWI_UNLOCK(sc);
4067 }