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, enum ieee80211_opmode, 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(void *);
 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_plcp2rate(uint32_t, enum ieee80211_phytype);
 122 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 123                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
 124
 125 static void     bwi_restart(void *, int);
 126 static void     bwi_init_statechg(struct bwi_softc *, int);
 127 static void     bwi_stop(struct bwi_softc *, int);
 128 static void     bwi_stop_locked(struct bwi_softc *, int);
 129 static int      bwi_newbuf(struct bwi_softc *, int, int);
 130 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 131                           struct ieee80211_node *);
 132 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
 133                           struct ieee80211_node *,
 134                           const struct ieee80211_bpf_params *);
 135
 136 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 137                                        bus_addr_t, int, int);
 138 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 139
 140 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 141 static int      bwi_init_rx_ring32(struct bwi_softc *);
 142 static int      bwi_init_txstats32(struct bwi_softc *);
 143 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 144 static void     bwi_free_rx_ring32(struct bwi_softc *);
 145 static void     bwi_free_txstats32(struct bwi_softc *);
 146 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 147 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 148                                     int, bus_addr_t, int);
 149 static int      bwi_rxeof32(struct bwi_softc *);
 150 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 151 static void     bwi_txeof_status32(struct bwi_softc *);
 152
 153 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 154 static int      bwi_init_rx_ring64(struct bwi_softc *);
 155 static int      bwi_init_txstats64(struct bwi_softc *);
 156 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 157 static void     bwi_free_rx_ring64(struct bwi_softc *);
 158 static void     bwi_free_txstats64(struct bwi_softc *);
 159 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 160 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 161                                     int, bus_addr_t, int);
 162 static int      bwi_rxeof64(struct bwi_softc *);
 163 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 164 static void     bwi_txeof_status64(struct bwi_softc *);
 165
 166 static int      bwi_rxeof(struct bwi_softc *, int);
 167 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 168 static void     bwi_txeof(struct bwi_softc *);
 169 static void     bwi_txeof_status(struct bwi_softc *, int);
 170 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 171 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 172
 173 static int      bwi_dma_alloc(struct bwi_softc *);
 174 static void     bwi_dma_free(struct bwi_softc *);
 175 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 176                                    struct bwi_ring_data *, bus_size_t,
 177                                    uint32_t);
 178 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 179 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 180 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 181 static void     bwi_dma_txstats_free(struct bwi_softc *);
 182 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 183 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 184                                  bus_size_t, int);
 185
 186 static void     bwi_power_on(struct bwi_softc *, int);
 187 static int      bwi_power_off(struct bwi_softc *, int);
 188 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 189 static int      bwi_set_clock_delay(struct bwi_softc *);
 190 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 191 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 192 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 193                                     const uint8_t *);
 194 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 195
 196 static void     bwi_get_card_flags(struct bwi_softc *);
 197 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 198
 199 static int      bwi_bus_attach(struct bwi_softc *);
 200 static int      bwi_bbp_attach(struct bwi_softc *);
 201 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 202 static void     bwi_bbp_power_off(struct bwi_softc *);
 203
 204 static const char *bwi_regwin_name(const struct bwi_regwin *);
 205 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 206 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 207 static int      bwi_regwin_select(struct bwi_softc *, int);
 208
 209 static void     bwi_led_attach(struct bwi_softc *);
 210 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 211 static void     bwi_led_event(struct bwi_softc *, int);
 212 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 213 static void     bwi_led_blink_next(void *);
 214 static void     bwi_led_blink_end(void *);
 215
 216 static const struct {
 217         uint16_t        did_min;
 218         uint16_t        did_max;
 219         uint16_t        bbp_id;
 220 } bwi_bbpid_map[] = {
 221         { 0x4301, 0x4301, 0x4301 },
 222         { 0x4305, 0x4307, 0x4307 },
 223         { 0x4402, 0x4403, 0x4402 },
 224         { 0x4610, 0x4615, 0x4610 },
 225         { 0x4710, 0x4715, 0x4710 },
 226         { 0x4720, 0x4725, 0x4309 }
 227 };
 228
 229 static const struct {
 230         uint16_t        bbp_id;
 231         int             nregwin;
 232 } bwi_regwin_count[] = {
 233         { 0x4301, 5 },
 234         { 0x4306, 6 },
 235         { 0x4307, 5 },
 236         { 0x4310, 8 },
 237         { 0x4401, 3 },
 238         { 0x4402, 3 },
 239         { 0x4610, 9 },
 240         { 0x4704, 9 },
 241         { 0x4710, 9 },
 242         { 0x5365, 7 }
 243 };
 244
 245 #define CLKSRC(src)                             \
 246 [BWI_CLKSRC_ ## src] = {                        \
 247         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 248         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 249 }
 250
 251 static const struct {
 252         u_int   freq_min;
 253         u_int   freq_max;
 254 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 255         CLKSRC(LP_OSC),
 256         CLKSRC(CS_OSC),
 257         CLKSRC(PCI)
 258 };
 259
 260 #undef CLKSRC
 261
 262 #define VENDOR_LED_ACT(vendor)                          \
 263 {                                                       \
 264         .vid = PCI_VENDOR_##vendor,                     \
 265         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 266 }
 267
 268 static const struct {
 269 #define PCI_VENDOR_COMPAQ       0x0e11
 270 #define PCI_VENDOR_LINKSYS      0x1737
 271         uint16_t        vid;
 272         uint8_t         led_act[BWI_LED_MAX];
 273 } bwi_vendor_led_act[] = {
 274         VENDOR_LED_ACT(COMPAQ),
 275         VENDOR_LED_ACT(LINKSYS)
 276 #undef PCI_VENDOR_LINKSYS
 277 #undef PCI_VENDOR_COMPAQ
 278 };
 279
 280 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 281         { BWI_VENDOR_LED_ACT_DEFAULT };
 282
 283 #undef VENDOR_LED_ACT
 284
 285 static const struct {
 286         int     on_dur;
 287         int     off_dur;
 288 } bwi_led_duration[109] = {
 289         [0]     = { 400, 100 },
 290         [2]     = { 150, 75 },
 291         [4]     = { 90, 45 },
 292         [11]    = { 66, 34 },
 293         [12]    = { 53, 26 },
 294         [18]    = { 42, 21 },
 295         [22]    = { 35, 17 },
 296         [24]    = { 32, 16 },
 297         [36]    = { 21, 10 },
 298         [48]    = { 16, 8 },
 299         [72]    = { 11, 5 },
 300         [96]    = { 9, 4 },
 301         [108]   = { 7, 3 }
 302 };
 303
 304 #ifdef BWI_DEBUG
 305 #ifdef BWI_DEBUG_VERBOSE
 306 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 307 #else
 308 static uint32_t bwi_debug;
 309 #endif
 310 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 311 #endif  /* BWI_DEBUG */
 312
 313 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 314
 315 uint16_t
 316 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 317 {
 318         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 319 }
 320
 321 static __inline void
 322 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 323                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 324                  int tx)
 325 {
 326         struct bwi_desc32 *desc = &desc_array[desc_idx];
 327         uint32_t ctrl, addr, addr_hi, addr_lo;
 328
 329         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 330         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 331
 332         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 333                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 334
 335         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 336                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 337         if (desc_idx == ndesc - 1)
 338                 ctrl |= BWI_DESC32_C_EOR;
 339         if (tx) {
 340                 /* XXX */
 341                 ctrl |= BWI_DESC32_C_FRAME_START |
 342                         BWI_DESC32_C_FRAME_END |
 343                         BWI_DESC32_C_INTR;
 344         }
 345
 346         desc->addr = htole32(addr);
 347         desc->ctrl = htole32(ctrl);
 348 }
 349
 350 int
 351 bwi_attach(struct bwi_softc *sc)
 352 {
 353         struct ieee80211com *ic;
 354         device_t dev = sc->sc_dev;
 355         struct ifnet *ifp;
 356         struct bwi_mac *mac;
 357         struct bwi_phy *phy;
 358         int i, error;
 359         uint8_t bands;
 360         uint8_t macaddr[IEEE80211_ADDR_LEN];
 361
 362         BWI_LOCK_INIT(sc);
 363
 364         /*
 365          * Initialize taskq and various tasks
 366          */
 367         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
 368                 taskqueue_thread_enqueue, &sc->sc_tq);
 369         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
 370                 device_get_nameunit(dev));
 371         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
 372
 373         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
 374
 375         /*
 376          * Initialize sysctl variables
 377          */
 378         sc->sc_fw_version = BWI_FW_VERSION3;
 379         sc->sc_led_idle = (2350 * hz) / 1000;
 380         sc->sc_led_blink = 1;
 381         sc->sc_txpwr_calib = 1;
 382 #ifdef BWI_DEBUG
 383         sc->sc_debug = bwi_debug;
 384 #endif
 385         bwi_power_on(sc, 1);
 386
 387         error = bwi_bbp_attach(sc);
 388         if (error)
 389                 goto fail;
 390
 391         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 392         if (error)
 393                 goto fail;
 394
 395         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 396                 error = bwi_set_clock_delay(sc);
 397                 if (error)
 398                         goto fail;
 399
 400                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 401                 if (error)
 402                         goto fail;
 403
 404                 error = bwi_get_pwron_delay(sc);
 405                 if (error)
 406                         goto fail;
 407         }
 408
 409         error = bwi_bus_attach(sc);
 410         if (error)
 411                 goto fail;
 412
 413         bwi_get_card_flags(sc);
 414
 415         bwi_led_attach(sc);
 416
 417         for (i = 0; i < sc->sc_nmac; ++i) {
 418                 struct bwi_regwin *old;
 419
 420                 mac = &sc->sc_mac[i];
 421                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 422                 if (error)
 423                         goto fail;
 424
 425                 error = bwi_mac_lateattach(mac);
 426                 if (error)
 427                         goto fail;
 428
 429                 error = bwi_regwin_switch(sc, old, NULL);
 430                 if (error)
 431                         goto fail;
 432         }
 433
 434         /*
 435          * XXX First MAC is known to exist
 436          * TODO2
 437          */
 438         mac = &sc->sc_mac[0];
 439         phy = &mac->mac_phy;
 440
 441         bwi_bbp_power_off(sc);
 442
 443         error = bwi_dma_alloc(sc);
 444         if (error)
 445                 goto fail;
 446
 447         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 448         if (ifp == NULL) {
 449                 device_printf(dev, "can not if_alloc()\n");
 450                 error = ENOSPC;
 451                 goto fail;
 452         }
 453         ic = ifp->if_l2com;
 454
 455         /* set these up early for if_printf use */
 456         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 457
 458         ifp->if_softc = sc;
 459         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 460         ifp->if_init = bwi_init;
 461         ifp->if_ioctl = bwi_ioctl;
 462         ifp->if_start = bwi_start;
 463         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 464         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 465         IFQ_SET_READY(&ifp->if_snd);
 466         callout_init_mtx(&sc->sc_watchdog_timer, &sc->sc_mtx, 0);
 467
 468         /*
 469          * Setup ratesets, phytype, channels and get MAC address
 470          */
 471         bands = 0;
 472         if (phy->phy_mode == IEEE80211_MODE_11B ||
 473             phy->phy_mode == IEEE80211_MODE_11G) {
 474                 setbit(&bands, IEEE80211_MODE_11B);
 475                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 476                         ic->ic_phytype = IEEE80211_T_DS;
 477                 } else {
 478                         ic->ic_phytype = IEEE80211_T_OFDM;
 479                         setbit(&bands, IEEE80211_MODE_11G);
 480                 }
 481
 482                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
 483                 if (IEEE80211_IS_MULTICAST(macaddr)) {
 484                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
 485                         if (IEEE80211_IS_MULTICAST(macaddr)) {
 486                                 device_printf(dev,
 487                                     "invalid MAC address: %6D\n",
 488                                     macaddr, ":");
 489                         }
 490                 }
 491         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 492                 /* TODO:11A */
 493                 setbit(&bands, IEEE80211_MODE_11A);
 494                 error = ENXIO;
 495                 goto fail;
 496         } else {
 497                 panic("unknown phymode %d\n", phy->phy_mode);
 498         }
 499
 500         /* Get locale */
 501         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 502                                    BWI_SPROM_CARD_INFO_LOCALE);
 503         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 504         /* XXX use locale */
 505         ieee80211_init_channels(ic, NULL, &bands);
 506
 507         ic->ic_ifp = ifp;
 508         ic->ic_caps = IEEE80211_C_STA |
 509                       IEEE80211_C_SHSLOT |
 510                       IEEE80211_C_SHPREAMBLE |
 511                       IEEE80211_C_WPA |
 512                       IEEE80211_C_BGSCAN |
 513                       IEEE80211_C_MONITOR;
 514         ic->ic_opmode = IEEE80211_M_STA;
 515         ieee80211_ifattach(ic, macaddr);
 516
 517         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 518
 519         /* override default methods */
 520         ic->ic_vap_create = bwi_vap_create;
 521         ic->ic_vap_delete = bwi_vap_delete;
 522         ic->ic_raw_xmit = bwi_raw_xmit;
 523         ic->ic_updateslot = bwi_updateslot;
 524         ic->ic_scan_start = bwi_scan_start;
 525         ic->ic_scan_end = bwi_scan_end;
 526         ic->ic_set_channel = bwi_set_channel;
 527
 528         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
 529
 530         ieee80211_radiotap_attach(ic,
 531             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
 532                 BWI_TX_RADIOTAP_PRESENT,
 533             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
 534                 BWI_RX_RADIOTAP_PRESENT);
 535
 536         /*
 537          * Add sysctl nodes
 538          */
 539         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 540                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 541                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 542                         "Firmware version");
 543         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 544                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 545                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 546                         "# ticks before LED enters idle state");
 547         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 548                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 549                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 550                        "Allow LED to blink");
 551         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 552                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 553                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 554                        "Enable software TX power calibration");
 555 #ifdef BWI_DEBUG
 556         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 557                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 558                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 559 #endif
 560         if (bootverbose)
 561                 ieee80211_announce(ic);
 562
 563         return (0);
 564 fail:
 565         BWI_LOCK_DESTROY(sc);
 566         return (error);
 567 }
 568
 569 int
 570 bwi_detach(struct bwi_softc *sc)
 571 {
 572         struct ifnet *ifp = sc->sc_ifp;
 573         struct ieee80211com *ic = ifp->if_l2com;
 574         int i;
 575
 576         bwi_stop(sc, 1);
 577         callout_drain(&sc->sc_led_blink_ch);
 578         callout_drain(&sc->sc_calib_ch);
 579         callout_drain(&sc->sc_watchdog_timer);
 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, const char name[IFNAMSIZ], int unit,
 595     enum ieee80211_opmode 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         callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
1292
1293         /* Enable intrs */
1294         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1295         return;
1296 bad:
1297         bwi_stop_locked(sc, 1);
1298 }
1299
1300 static int
1301 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1302 {
1303 #define IS_RUNNING(ifp) \
1304         ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1305         struct bwi_softc *sc = ifp->if_softc;
1306         struct ieee80211com *ic = ifp->if_l2com;
1307         struct ifreq *ifr = (struct ifreq *) data;
1308         int error = 0, startall = 0;
1309
1310         switch (cmd) {
1311         case SIOCSIFFLAGS:
1312                 BWI_LOCK(sc);
1313                 if (IS_RUNNING(ifp)) {
1314                         struct bwi_mac *mac;
1315                         int promisc = -1;
1316
1317                         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1318                             ("current regwin type %d",
1319                             sc->sc_cur_regwin->rw_type));
1320                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1321
1322                         if ((ifp->if_flags & IFF_PROMISC) &&
1323                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1324                                 promisc = 1;
1325                                 sc->sc_flags |= BWI_F_PROMISC;
1326                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1327                                    (sc->sc_flags & BWI_F_PROMISC)) {
1328                                 promisc = 0;
1329                                 sc->sc_flags &= ~BWI_F_PROMISC;
1330                         }
1331
1332                         if (promisc >= 0)
1333                                 bwi_mac_set_promisc(mac, promisc);
1334                 }
1335
1336                 if (ifp->if_flags & IFF_UP) {
1337                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1338                                 bwi_init_statechg(sc, 1);
1339                                 startall = 1;
1340                         }
1341                 } else {
1342                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1343                                 bwi_stop_locked(sc, 1);
1344                 }
1345                 BWI_UNLOCK(sc);
1346                 if (startall)
1347                         ieee80211_start_all(ic);
1348                 break;
1349         case SIOCGIFMEDIA:
1350                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1351                 break;
1352         case SIOCGIFADDR:
1353                 error = ether_ioctl(ifp, cmd, data);
1354                 break;
1355         default:
1356                 error = EINVAL;
1357                 break;
1358         }
1359         return error;
1360 #undef IS_RUNNING
1361 }
1362
1363 static void
1364 bwi_start(struct ifnet *ifp)
1365 {
1366         struct bwi_softc *sc = ifp->if_softc;
1367
1368         BWI_LOCK(sc);
1369         bwi_start_locked(ifp);
1370         BWI_UNLOCK(sc);
1371 }
1372
1373 static void
1374 bwi_start_locked(struct ifnet *ifp)
1375 {
1376         struct bwi_softc *sc = ifp->if_softc;
1377         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1378         struct ieee80211_frame *wh;
1379         struct ieee80211_node *ni;
1380         struct ieee80211_key *k;
1381         struct mbuf *m;
1382         int trans, idx;
1383
1384         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1385                 return;
1386
1387         trans = 0;
1388         idx = tbd->tbd_idx;
1389
1390         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1391                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);       /* XXX: LOCK */
1392                 if (m == NULL)
1393                         break;
1394
1395                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1396                 wh = mtod(m, struct ieee80211_frame *);
1397                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1398                         k = ieee80211_crypto_encap(ni, m);
1399                         if (k == NULL) {
1400                                 ieee80211_free_node(ni);
1401                                 m_freem(m);
1402                                 ifp->if_oerrors++;
1403                                 continue;
1404                         }
1405                 }
1406                 wh = NULL;      /* Catch any invalid use */
1407
1408                 if (bwi_encap(sc, idx, m, ni) != 0) {
1409                         /* 'm' is freed in bwi_encap() if we reach here */
1410                         if (ni != NULL)
1411                                 ieee80211_free_node(ni);
1412                         ifp->if_oerrors++;
1413                         continue;
1414                 }
1415
1416                 trans = 1;
1417                 tbd->tbd_used++;
1418                 idx = (idx + 1) % BWI_TX_NDESC;
1419
1420                 ifp->if_opackets++;
1421
1422                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1423                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1424                         break;
1425                 }
1426         }
1427         tbd->tbd_idx = idx;
1428
1429         if (trans)
1430                 sc->sc_tx_timer = 5;
1431 }
1432
1433 static int
1434 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1435         const struct ieee80211_bpf_params *params)
1436 {
1437         struct ieee80211com *ic = ni->ni_ic;
1438         struct ifnet *ifp = ic->ic_ifp;
1439         struct bwi_softc *sc = ifp->if_softc;
1440         /* XXX wme? */
1441         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1442         int idx, error;
1443
1444         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1445                 ieee80211_free_node(ni);
1446                 m_freem(m);
1447                 return ENETDOWN;
1448         }
1449
1450         BWI_LOCK(sc);
1451         idx = tbd->tbd_idx;
1452         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
1453         if (params == NULL) {
1454                 /*
1455                  * Legacy path; interpret frame contents to decide
1456                  * precisely how to send the frame.
1457                  */
1458                 error = bwi_encap(sc, idx, m, ni);
1459         } else {
1460                 /*
1461                  * Caller supplied explicit parameters to use in
1462                  * sending the frame.
1463                  */
1464                 error = bwi_encap_raw(sc, idx, m, ni, params);
1465         }
1466         if (error == 0) {
1467                 ifp->if_opackets++;
1468                 if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
1469                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1470                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
1471                 sc->sc_tx_timer = 5;
1472         } else {
1473                 /* NB: m is reclaimed on encap failure */
1474                 ieee80211_free_node(ni);
1475                 ifp->if_oerrors++;
1476         }
1477         BWI_UNLOCK(sc);
1478         return error;
1479 }
1480
1481 static void
1482 bwi_watchdog(void *arg)
1483 {
1484         struct bwi_softc *sc;
1485         struct ifnet *ifp;
1486
1487         sc = arg;
1488         ifp = sc->sc_ifp;
1489         BWI_ASSERT_LOCKED(sc);
1490         if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) {
1491                 if_printf(ifp, "watchdog timeout\n");
1492                 ifp->if_oerrors++;
1493                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1494         }
1495         callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
1496 }
1497
1498 static void
1499 bwi_stop(struct bwi_softc *sc, int statechg)
1500 {
1501         BWI_LOCK(sc);
1502         bwi_stop_locked(sc, statechg);
1503         BWI_UNLOCK(sc);
1504 }
1505
1506 static void
1507 bwi_stop_locked(struct bwi_softc *sc, int statechg)
1508 {
1509         struct ifnet *ifp = sc->sc_ifp;
1510         struct bwi_mac *mac;
1511         int i, error, pwr_off = 0;
1512
1513         BWI_ASSERT_LOCKED(sc);
1514
1515         callout_stop(&sc->sc_calib_ch);
1516         callout_stop(&sc->sc_led_blink_ch);
1517         sc->sc_led_blinking = 0;
1518         sc->sc_flags |= BWI_F_STOP;
1519
1520         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1521                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1522                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1523                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1524
1525                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1526                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1527                 bwi_mac_stop(mac);
1528         }
1529
1530         for (i = 0; i < sc->sc_nmac; ++i) {
1531                 struct bwi_regwin *old_rw;
1532
1533                 mac = &sc->sc_mac[i];
1534                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1535                         continue;
1536
1537                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1538                 if (error)
1539                         continue;
1540
1541                 bwi_mac_shutdown(mac);
1542                 pwr_off = 1;
1543
1544                 bwi_regwin_switch(sc, old_rw, NULL);
1545         }
1546
1547         if (pwr_off)
1548                 bwi_bbp_power_off(sc);
1549
1550         sc->sc_tx_timer = 0;
1551         callout_stop(&sc->sc_watchdog_timer);
1552         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1553 }
1554
1555 void
1556 bwi_intr(void *xsc)
1557 {
1558         struct bwi_softc *sc = xsc;
1559         struct ifnet *ifp = sc->sc_ifp;
1560         struct bwi_mac *mac;
1561         uint32_t intr_status;
1562         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1563         int i, txrx_error, tx = 0, rx_data = -1;
1564
1565         BWI_LOCK(sc);
1566
1567         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1568             (sc->sc_flags & BWI_F_STOP)) {
1569                 BWI_UNLOCK(sc);
1570                 return;
1571         }
1572         /*
1573          * Get interrupt status
1574          */
1575         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1576         if (intr_status == 0xffffffff) {        /* Not for us */
1577                 BWI_UNLOCK(sc);
1578                 return;
1579         }
1580
1581         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1582
1583         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1584         if (intr_status == 0) {         /* Nothing is interesting */
1585                 BWI_UNLOCK(sc);
1586                 return;
1587         }
1588
1589         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1590             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1591         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1592
1593         txrx_error = 0;
1594         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1595         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1596                 uint32_t mask;
1597
1598                 if (BWI_TXRX_IS_RX(i))
1599                         mask = BWI_TXRX_RX_INTRS;
1600                 else
1601                         mask = BWI_TXRX_TX_INTRS;
1602
1603                 txrx_intr_status[i] =
1604                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1605
1606                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1607                          i, txrx_intr_status[i]);
1608
1609                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1610                         if_printf(ifp,
1611                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
1612                             __func__, i, txrx_intr_status[i]);
1613                         txrx_error = 1;
1614                 }
1615         }
1616         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1617
1618         /*
1619          * Acknowledge interrupt
1620          */
1621         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1622
1623         for (i = 0; i < BWI_TXRX_NRING; ++i)
1624                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1625
1626         /* Disable all interrupts */
1627         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1628
1629         /*
1630          * http://bcm-specs.sipsolutions.net/Interrupts
1631          * Says for this bit (0x800):
1632          * "Fatal Error
1633          *
1634          * We got this one while testing things when by accident the
1635          * template ram wasn't set to big endian when it should have
1636          * been after writing the initial values. It keeps on being
1637          * triggered, the only way to stop it seems to shut down the
1638          * chip."
1639          *
1640          * Suggesting that we should never get it and if we do we're not
1641          * feeding TX packets into the MAC correctly if we do...  Apparently,
1642          * it is valid only on mac version 5 and higher, but I couldn't
1643          * find a reference for that...  Since I see them from time to time
1644          * on my card, this suggests an error in the tx path still...
1645          */
1646         if (intr_status & BWI_INTR_PHY_TXERR) {
1647                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1648                         if_printf(ifp, "%s: intr PHY TX error\n", __func__);
1649                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1650                         BWI_UNLOCK(sc);
1651                         return;
1652                 }
1653         }
1654
1655         if (txrx_error) {
1656                 /* TODO: reset device */
1657         }
1658
1659         if (intr_status & BWI_INTR_TBTT)
1660                 bwi_mac_config_ps(mac);
1661
1662         if (intr_status & BWI_INTR_EO_ATIM)
1663                 if_printf(ifp, "EO_ATIM\n");
1664
1665         if (intr_status & BWI_INTR_PMQ) {
1666                 for (;;) {
1667                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1668                                 break;
1669                 }
1670                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1671         }
1672
1673         if (intr_status & BWI_INTR_NOISE)
1674                 if_printf(ifp, "intr noise\n");
1675
1676         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
1677                 rx_data = sc->sc_rxeof(sc);
1678                 if (sc->sc_flags & BWI_F_STOP) {
1679                         BWI_UNLOCK(sc);
1680                         return;
1681                 }
1682         }
1683
1684         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1685                 sc->sc_txeof_status(sc);
1686                 tx = 1;
1687         }
1688
1689         if (intr_status & BWI_INTR_TX_DONE) {
1690                 bwi_txeof(sc);
1691                 tx = 1;
1692         }
1693
1694         /* Re-enable interrupts */
1695         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1696
1697         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1698                 int evt = BWI_LED_EVENT_NONE;
1699
1700                 if (tx && rx_data > 0) {
1701                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1702                                 evt = BWI_LED_EVENT_RX;
1703                         else
1704                                 evt = BWI_LED_EVENT_TX;
1705                 } else if (tx) {
1706                         evt = BWI_LED_EVENT_TX;
1707                 } else if (rx_data > 0) {
1708                         evt = BWI_LED_EVENT_RX;
1709                 } else if (rx_data == 0) {
1710                         evt = BWI_LED_EVENT_POLL;
1711                 }
1712
1713                 if (evt != BWI_LED_EVENT_NONE)
1714                         bwi_led_event(sc, evt);
1715         }
1716
1717         BWI_UNLOCK(sc);
1718 }
1719
1720 static void
1721 bwi_scan_start(struct ieee80211com *ic)
1722 {
1723         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1724
1725         BWI_LOCK(sc);
1726         /* Enable MAC beacon promiscuity */
1727         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1728         BWI_UNLOCK(sc);
1729 }
1730
1731 static void
1732 bwi_set_channel(struct ieee80211com *ic)
1733 {
1734         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1735         struct ieee80211_channel *c = ic->ic_curchan;
1736         struct bwi_mac *mac;
1737
1738         BWI_LOCK(sc);
1739         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1740             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1741         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1742         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
1743
1744         sc->sc_rates = ieee80211_get_ratetable(c);
1745
1746         /*
1747          * Setup radio tap channel freq and flags
1748          */
1749         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
1750                 htole16(c->ic_freq);
1751         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
1752                 htole16(c->ic_flags & 0xffff);
1753
1754         BWI_UNLOCK(sc);
1755 }
1756
1757 static void
1758 bwi_scan_end(struct ieee80211com *ic)
1759 {
1760         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1761
1762         BWI_LOCK(sc);
1763         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1764         BWI_UNLOCK(sc);
1765 }
1766
1767 static int
1768 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1769 {
1770         struct bwi_vap *bvp = BWI_VAP(vap);
1771         struct ieee80211com *ic= vap->iv_ic;
1772         struct ifnet *ifp = ic->ic_ifp;
1773         enum ieee80211_state ostate = vap->iv_state;
1774         struct bwi_softc *sc = ifp->if_softc;
1775         struct bwi_mac *mac;
1776         int error;
1777
1778         BWI_LOCK(sc);
1779
1780         callout_stop(&sc->sc_calib_ch);
1781
1782         if (nstate == IEEE80211_S_INIT)
1783                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1784
1785         bwi_led_newstate(sc, nstate);
1786
1787         error = bvp->bv_newstate(vap, nstate, arg);
1788         if (error != 0)
1789                 goto back;
1790
1791         /*
1792          * Clear the BSSID when we stop a STA
1793          */
1794         if (vap->iv_opmode == IEEE80211_M_STA) {
1795                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
1796                         /*
1797                          * Clear out the BSSID.  If we reassociate to
1798                          * the same AP, this will reinialize things
1799                          * correctly...
1800                          */
1801                         if (ic->ic_opmode == IEEE80211_M_STA &&
1802                             !(sc->sc_flags & BWI_F_STOP))
1803                                 bwi_set_bssid(sc, bwi_zero_addr);
1804                 }
1805         }
1806
1807         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1808                 /* Nothing to do */
1809         } else if (nstate == IEEE80211_S_RUN) {
1810                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
1811
1812                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1813                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1814                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1815
1816                 /* Initial TX power calibration */
1817                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1818 #ifdef notyet
1819                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1820 #else
1821                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1822 #endif
1823
1824                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1825         }
1826 back:
1827         BWI_UNLOCK(sc);
1828
1829         return error;
1830 }
1831
1832 static int
1833 bwi_media_change(struct ifnet *ifp)
1834 {
1835         int error = ieee80211_media_change(ifp);
1836         /* NB: only the fixed rate can change and that doesn't need a reset */
1837         return (error == ENETRESET ? 0 : error);
1838 }
1839
1840 static int
1841 bwi_dma_alloc(struct bwi_softc *sc)
1842 {
1843         int error, i, has_txstats;
1844         bus_addr_t lowaddr = 0;
1845         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1846         uint32_t txrx_ctrl_step = 0;
1847
1848         has_txstats = 0;
1849         for (i = 0; i < sc->sc_nmac; ++i) {
1850                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1851                         has_txstats = 1;
1852                         break;
1853                 }
1854         }
1855
1856         switch (sc->sc_bus_space) {
1857         case BWI_BUS_SPACE_30BIT:
1858         case BWI_BUS_SPACE_32BIT:
1859                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1860                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1861                 else
1862                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1863                 desc_sz = sizeof(struct bwi_desc32);
1864                 txrx_ctrl_step = 0x20;
1865
1866                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1867                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1868                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1869                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1870                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1871                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1872                 sc->sc_rxeof = bwi_rxeof32;
1873                 sc->sc_start_tx = bwi_start_tx32;
1874                 if (has_txstats) {
1875                         sc->sc_init_txstats = bwi_init_txstats32;
1876                         sc->sc_free_txstats = bwi_free_txstats32;
1877                         sc->sc_txeof_status = bwi_txeof_status32;
1878                 }
1879                 break;
1880
1881         case BWI_BUS_SPACE_64BIT:
1882                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
1883                 desc_sz = sizeof(struct bwi_desc64);
1884                 txrx_ctrl_step = 0x40;
1885
1886                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
1887                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
1888                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
1889                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
1890                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
1891                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
1892                 sc->sc_rxeof = bwi_rxeof64;
1893                 sc->sc_start_tx = bwi_start_tx64;
1894                 if (has_txstats) {
1895                         sc->sc_init_txstats = bwi_init_txstats64;
1896                         sc->sc_free_txstats = bwi_free_txstats64;
1897                         sc->sc_txeof_status = bwi_txeof_status64;
1898                 }
1899                 break;
1900         }
1901
1902         KASSERT(lowaddr != 0, ("lowaddr zero"));
1903         KASSERT(desc_sz != 0, ("desc_sz zero"));
1904         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
1905
1906         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
1907         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
1908
1909         /*
1910          * Create top level DMA tag
1911          */
1912         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
1913                                BWI_ALIGN, 0,            /* alignment, bounds */
1914                                lowaddr,                 /* lowaddr */
1915                                BUS_SPACE_MAXADDR,       /* highaddr */
1916                                NULL, NULL,              /* filter, filterarg */
1917                                MAXBSIZE,                /* maxsize */
1918                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
1919                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1920                                BUS_DMA_ALLOCNOW,        /* flags */
1921                                NULL, NULL,              /* lockfunc, lockarg */
1922                                &sc->sc_parent_dtag);
1923         if (error) {
1924                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
1925                 return error;
1926         }
1927
1928 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
1929
1930         /*
1931          * Create TX ring DMA stuffs
1932          */
1933         error = bus_dma_tag_create(sc->sc_parent_dtag,
1934                                 BWI_RING_ALIGN, 0,
1935                                 BUS_SPACE_MAXADDR,
1936                                 BUS_SPACE_MAXADDR,
1937                                 NULL, NULL,
1938                                 tx_ring_sz,
1939                                 1,
1940                                 BUS_SPACE_MAXSIZE_32BIT,
1941                                 BUS_DMA_ALLOCNOW,
1942                                 NULL, NULL,
1943                                 &sc->sc_txring_dtag);
1944         if (error) {
1945                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
1946                 return error;
1947         }
1948
1949         for (i = 0; i < BWI_TX_NRING; ++i) {
1950                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
1951                                            &sc->sc_tx_rdata[i], tx_ring_sz,
1952                                            TXRX_CTRL(i));
1953                 if (error) {
1954                         device_printf(sc->sc_dev, "%dth TX ring "
1955                                       "DMA alloc failed\n", i);
1956                         return error;
1957                 }
1958         }
1959
1960         /*
1961          * Create RX ring DMA stuffs
1962          */
1963         error = bus_dma_tag_create(sc->sc_parent_dtag,
1964                                 BWI_RING_ALIGN, 0,
1965                                 BUS_SPACE_MAXADDR,
1966                                 BUS_SPACE_MAXADDR,
1967                                 NULL, NULL,
1968                                 rx_ring_sz,
1969                                 1,
1970                                 BUS_SPACE_MAXSIZE_32BIT,
1971                                 BUS_DMA_ALLOCNOW,
1972                                 NULL, NULL,
1973                                 &sc->sc_rxring_dtag);
1974         if (error) {
1975                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
1976                 return error;
1977         }
1978
1979         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
1980                                    rx_ring_sz, TXRX_CTRL(0));
1981         if (error) {
1982                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
1983                 return error;
1984         }
1985
1986         if (has_txstats) {
1987                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
1988                 if (error) {
1989                         device_printf(sc->sc_dev,
1990                                       "TX stats DMA alloc failed\n");
1991                         return error;
1992                 }
1993         }
1994
1995 #undef TXRX_CTRL
1996
1997         return bwi_dma_mbuf_create(sc);
1998 }
1999
2000 static void
2001 bwi_dma_free(struct bwi_softc *sc)
2002 {
2003         if (sc->sc_txring_dtag != NULL) {
2004                 int i;
2005
2006                 for (i = 0; i < BWI_TX_NRING; ++i) {
2007                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2008
2009                         if (rd->rdata_desc != NULL) {
2010                                 bus_dmamap_unload(sc->sc_txring_dtag,
2011                                                   rd->rdata_dmap);
2012                                 bus_dmamem_free(sc->sc_txring_dtag,
2013                                                 rd->rdata_desc,
2014                                                 rd->rdata_dmap);
2015                         }
2016                 }
2017                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2018         }
2019
2020         if (sc->sc_rxring_dtag != NULL) {
2021                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2022
2023                 if (rd->rdata_desc != NULL) {
2024                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2025                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2026                                         rd->rdata_dmap);
2027                 }
2028                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2029         }
2030
2031         bwi_dma_txstats_free(sc);
2032         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2033
2034         if (sc->sc_parent_dtag != NULL)
2035                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2036 }
2037
2038 static int
2039 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2040                    struct bwi_ring_data *rd, bus_size_t size,
2041                    uint32_t txrx_ctrl)
2042 {
2043         int error;
2044
2045         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2046                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2047                                  &rd->rdata_dmap);
2048         if (error) {
2049                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2050                 return error;
2051         }
2052
2053         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2054                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2055                                 BUS_DMA_NOWAIT);
2056         if (error) {
2057                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2058                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2059                 rd->rdata_desc = NULL;
2060                 return error;
2061         }
2062
2063         rd->rdata_txrx_ctrl = txrx_ctrl;
2064         return 0;
2065 }
2066
2067 static int
2068 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2069                       bus_size_t desc_sz)
2070 {
2071         struct bwi_txstats_data *st;
2072         bus_size_t dma_size;
2073         int error;
2074
2075         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
2076         if (st == NULL) {
2077                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
2078                 return ENOMEM;
2079         }
2080         sc->sc_txstats = st;
2081
2082         /*
2083          * Create TX stats descriptor DMA stuffs
2084          */
2085         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2086
2087         error = bus_dma_tag_create(sc->sc_parent_dtag,
2088                                 BWI_RING_ALIGN,
2089                                 0,
2090                                 BUS_SPACE_MAXADDR,
2091                                 BUS_SPACE_MAXADDR,
2092                                 NULL, NULL,
2093                                 dma_size,
2094                                 1,
2095                                 BUS_SPACE_MAXSIZE_32BIT,
2096                                 BUS_DMA_ALLOCNOW,
2097                                 NULL, NULL,
2098                                 &st->stats_ring_dtag);
2099         if (error) {
2100                 device_printf(sc->sc_dev, "can't create txstats ring "
2101                               "DMA tag\n");
2102                 return error;
2103         }
2104
2105         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2106                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2107                                  &st->stats_ring_dmap);
2108         if (error) {
2109                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2110                               "DMA mem\n");
2111                 bus_dma_tag_destroy(st->stats_ring_dtag);
2112                 st->stats_ring_dtag = NULL;
2113                 return error;
2114         }
2115
2116         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2117                                 st->stats_ring, dma_size,
2118                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2119                                 BUS_DMA_NOWAIT);
2120         if (error) {
2121                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2122                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2123                                 st->stats_ring_dmap);
2124                 bus_dma_tag_destroy(st->stats_ring_dtag);
2125                 st->stats_ring_dtag = NULL;
2126                 return error;
2127         }
2128
2129         /*
2130          * Create TX stats DMA stuffs
2131          */
2132         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2133                            BWI_ALIGN);
2134
2135         error = bus_dma_tag_create(sc->sc_parent_dtag,
2136                                 BWI_ALIGN,
2137                                 0,
2138                                 BUS_SPACE_MAXADDR,
2139                                 BUS_SPACE_MAXADDR,
2140                                 NULL, NULL,
2141                                 dma_size,
2142                                 1,
2143                                 BUS_SPACE_MAXSIZE_32BIT,
2144                                 BUS_DMA_ALLOCNOW,
2145                                 NULL, NULL,
2146                                 &st->stats_dtag);
2147         if (error) {
2148                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2149                 return error;
2150         }
2151
2152         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2153                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2154                                  &st->stats_dmap);
2155         if (error) {
2156                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2157                 bus_dma_tag_destroy(st->stats_dtag);
2158                 st->stats_dtag = NULL;
2159                 return error;
2160         }
2161
2162         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2163                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2164                                 BUS_DMA_NOWAIT);
2165         if (error) {
2166                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2167                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2168                 bus_dma_tag_destroy(st->stats_dtag);
2169                 st->stats_dtag = NULL;
2170                 return error;
2171         }
2172
2173         st->stats_ctrl_base = ctrl_base;
2174         return 0;
2175 }
2176
2177 static void
2178 bwi_dma_txstats_free(struct bwi_softc *sc)
2179 {
2180         struct bwi_txstats_data *st;
2181
2182         if (sc->sc_txstats == NULL)
2183                 return;
2184         st = sc->sc_txstats;
2185
2186         if (st->stats_ring_dtag != NULL) {
2187                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2188                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2189                                 st->stats_ring_dmap);
2190                 bus_dma_tag_destroy(st->stats_ring_dtag);
2191         }
2192
2193         if (st->stats_dtag != NULL) {
2194                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2195                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2196                 bus_dma_tag_destroy(st->stats_dtag);
2197         }
2198
2199         free(st, M_DEVBUF);
2200 }
2201
2202 static void
2203 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2204 {
2205         KASSERT(nseg == 1, ("too many segments\n"));
2206         *((bus_addr_t *)arg) = seg->ds_addr;
2207 }
2208
2209 static int
2210 bwi_dma_mbuf_create(struct bwi_softc *sc)
2211 {
2212         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2213         int i, j, k, ntx, error;
2214
2215         /*
2216          * Create TX/RX mbuf DMA tag
2217          */
2218         error = bus_dma_tag_create(sc->sc_parent_dtag,
2219                                 1,
2220                                 0,
2221                                 BUS_SPACE_MAXADDR,
2222                                 BUS_SPACE_MAXADDR,
2223                                 NULL, NULL,
2224                                 MCLBYTES,
2225                                 1,
2226                                 BUS_SPACE_MAXSIZE_32BIT,
2227                                 BUS_DMA_ALLOCNOW,
2228                                 NULL, NULL,
2229                                 &sc->sc_buf_dtag);
2230         if (error) {
2231                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2232                 return error;
2233         }
2234
2235         ntx = 0;
2236
2237         /*
2238          * Create TX mbuf DMA map
2239          */
2240         for (i = 0; i < BWI_TX_NRING; ++i) {
2241                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2242
2243                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2244                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2245                                                   &tbd->tbd_buf[j].tb_dmap);
2246                         if (error) {
2247                                 device_printf(sc->sc_dev, "can't create "
2248                                               "%dth tbd, %dth DMA map\n", i, j);
2249
2250                                 ntx = i;
2251                                 for (k = 0; k < j; ++k) {
2252                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2253                                                 tbd->tbd_buf[k].tb_dmap);
2254                                 }
2255                                 goto fail;
2256                         }
2257                 }
2258         }
2259         ntx = BWI_TX_NRING;
2260
2261         /*
2262          * Create RX mbuf DMA map and a spare DMA map
2263          */
2264         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2265                                   &rbd->rbd_tmp_dmap);
2266         if (error) {
2267                 device_printf(sc->sc_dev,
2268                               "can't create spare RX buf DMA map\n");
2269                 goto fail;
2270         }
2271
2272         for (j = 0; j < BWI_RX_NDESC; ++j) {
2273                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2274                                           &rbd->rbd_buf[j].rb_dmap);
2275                 if (error) {
2276                         device_printf(sc->sc_dev, "can't create %dth "
2277                                       "RX buf DMA map\n", j);
2278
2279                         for (k = 0; k < j; ++k) {
2280                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2281                                         rbd->rbd_buf[j].rb_dmap);
2282                         }
2283                         bus_dmamap_destroy(sc->sc_buf_dtag,
2284                                            rbd->rbd_tmp_dmap);
2285                         goto fail;
2286                 }
2287         }
2288
2289         return 0;
2290 fail:
2291         bwi_dma_mbuf_destroy(sc, ntx, 0);
2292         return error;
2293 }
2294
2295 static void
2296 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2297 {
2298         int i, j;
2299
2300         if (sc->sc_buf_dtag == NULL)
2301                 return;
2302
2303         for (i = 0; i < ntx; ++i) {
2304                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2305
2306                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2307                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2308
2309                         if (tb->tb_mbuf != NULL) {
2310                                 bus_dmamap_unload(sc->sc_buf_dtag,
2311                                                   tb->tb_dmap);
2312                                 m_freem(tb->tb_mbuf);
2313                         }
2314                         if (tb->tb_ni != NULL)
2315                                 ieee80211_free_node(tb->tb_ni);
2316                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2317                 }
2318         }
2319
2320         if (nrx) {
2321                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2322
2323                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2324                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2325                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2326
2327                         if (rb->rb_mbuf != NULL) {
2328                                 bus_dmamap_unload(sc->sc_buf_dtag,
2329                                                   rb->rb_dmap);
2330                                 m_freem(rb->rb_mbuf);
2331                         }
2332                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2333                 }
2334         }
2335
2336         bus_dma_tag_destroy(sc->sc_buf_dtag);
2337         sc->sc_buf_dtag = NULL;
2338 }
2339
2340 static void
2341 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2342 {
2343         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2344 }
2345
2346 static void
2347 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2348 {
2349         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2350 }
2351
2352 static int
2353 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2354 {
2355         struct bwi_ring_data *rd;
2356         struct bwi_txbuf_data *tbd;
2357         uint32_t val, addr_hi, addr_lo;
2358
2359         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2360         rd = &sc->sc_tx_rdata[ring_idx];
2361         tbd = &sc->sc_tx_bdata[ring_idx];
2362
2363         tbd->tbd_idx = 0;
2364         tbd->tbd_used = 0;
2365
2366         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2367         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2368                         BUS_DMASYNC_PREWRITE);
2369
2370         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2371         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2372
2373         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2374               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2375                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2376         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2377
2378         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2379               BWI_TXRX32_CTRL_ENABLE;
2380         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2381
2382         return 0;
2383 }
2384
2385 static void
2386 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2387                        bus_addr_t paddr, int hdr_size, int ndesc)
2388 {
2389         uint32_t val, addr_hi, addr_lo;
2390
2391         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2392         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2393
2394         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2395               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2396                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2397         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2398
2399         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2400               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2401               BWI_TXRX32_CTRL_ENABLE;
2402         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2403
2404         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2405                     (ndesc - 1) * sizeof(struct bwi_desc32));
2406 }
2407
2408 static int
2409 bwi_init_rx_ring32(struct bwi_softc *sc)
2410 {
2411         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2412         int i, error;
2413
2414         sc->sc_rx_bdata.rbd_idx = 0;
2415
2416         for (i = 0; i < BWI_RX_NDESC; ++i) {
2417                 error = bwi_newbuf(sc, i, 1);
2418                 if (error) {
2419                         device_printf(sc->sc_dev,
2420                                   "can't allocate %dth RX buffer\n", i);
2421                         return error;
2422                 }
2423         }
2424         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2425                         BUS_DMASYNC_PREWRITE);
2426
2427         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2428                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2429         return 0;
2430 }
2431
2432 static int
2433 bwi_init_txstats32(struct bwi_softc *sc)
2434 {
2435         struct bwi_txstats_data *st = sc->sc_txstats;
2436         bus_addr_t stats_paddr;
2437         int i;
2438
2439         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2440         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2441
2442         st->stats_idx = 0;
2443
2444         stats_paddr = st->stats_paddr;
2445         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2446                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2447                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2448                 stats_paddr += sizeof(struct bwi_txstats);
2449         }
2450         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2451                         BUS_DMASYNC_PREWRITE);
2452
2453         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2454                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2455         return 0;
2456 }
2457
2458 static void
2459 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2460                     int buf_len)
2461 {
2462         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2463
2464         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2465         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2466                          paddr, buf_len, 0);
2467 }
2468
2469 static void
2470 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2471                     int buf_idx, bus_addr_t paddr, int buf_len)
2472 {
2473         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
2474         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2475                          paddr, buf_len, 1);
2476 }
2477
2478 static int
2479 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2480 {
2481         /* TODO:64 */
2482         return EOPNOTSUPP;
2483 }
2484
2485 static int
2486 bwi_init_rx_ring64(struct bwi_softc *sc)
2487 {
2488         /* TODO:64 */
2489         return EOPNOTSUPP;
2490 }
2491
2492 static int
2493 bwi_init_txstats64(struct bwi_softc *sc)
2494 {
2495         /* TODO:64 */
2496         return EOPNOTSUPP;
2497 }
2498
2499 static void
2500 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2501                     int buf_len)
2502 {
2503         /* TODO:64 */
2504 }
2505
2506 static void
2507 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2508                     int buf_idx, bus_addr_t paddr, int buf_len)
2509 {
2510         /* TODO:64 */
2511 }
2512
2513 static void
2514 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2515                  bus_size_t mapsz __unused, int error)
2516 {
2517         if (!error) {
2518                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2519                 *((bus_addr_t *)arg) = seg->ds_addr;
2520         }
2521 }
2522
2523 static int
2524 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2525 {
2526         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2527         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2528         struct bwi_rxbuf_hdr *hdr;
2529         bus_dmamap_t map;
2530         bus_addr_t paddr;
2531         struct mbuf *m;
2532         int error;
2533
2534         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2535
2536         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
2537         if (m == NULL) {
2538                 error = ENOBUFS;
2539
2540                 /*
2541                  * If the NIC is up and running, we need to:
2542                  * - Clear RX buffer's header.
2543                  * - Restore RX descriptor settings.
2544                  */
2545                 if (init)
2546                         return error;
2547                 else
2548                         goto back;
2549         }
2550         m->m_len = m->m_pkthdr.len = MCLBYTES;
2551
2552         /*
2553          * Try to load RX buf into temporary DMA map
2554          */
2555         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2556                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
2557         if (error) {
2558                 m_freem(m);
2559
2560                 /*
2561                  * See the comment above
2562                  */
2563                 if (init)
2564                         return error;
2565                 else
2566                         goto back;
2567         }
2568
2569         if (!init)
2570                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2571         rxbuf->rb_mbuf = m;
2572         rxbuf->rb_paddr = paddr;
2573
2574         /*
2575          * Swap RX buf's DMA map with the loaded temporary one
2576          */
2577         map = rxbuf->rb_dmap;
2578         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2579         rbd->rbd_tmp_dmap = map;
2580
2581 back:
2582         /*
2583          * Clear RX buf header
2584          */
2585         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2586         bzero(hdr, sizeof(*hdr));
2587         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2588
2589         /*
2590          * Setup RX buf descriptor
2591          */
2592         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2593                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2594         return error;
2595 }
2596
2597 static void
2598 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2599                     const uint8_t *addr)
2600 {
2601         int i;
2602
2603         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2604                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2605
2606         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2607                 uint16_t addr_val;
2608
2609                 addr_val = (uint16_t)addr[i * 2] |
2610                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2611                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2612         }
2613 }
2614
2615 static int
2616 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2617 {
2618         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2619         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2620         struct ifnet *ifp = sc->sc_ifp;
2621         struct ieee80211com *ic = ifp->if_l2com;
2622         int idx, rx_data = 0;
2623
2624         idx = rbd->rbd_idx;
2625         while (idx != end_idx) {
2626                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2627                 struct bwi_rxbuf_hdr *hdr;
2628                 struct ieee80211_frame_min *wh;
2629                 struct ieee80211_node *ni;
2630                 struct mbuf *m;
2631                 uint32_t plcp;
2632                 uint16_t flags2;
2633                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
2634
2635                 m = rb->rb_mbuf;
2636                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2637                                 BUS_DMASYNC_POSTREAD);
2638
2639                 if (bwi_newbuf(sc, idx, 0)) {
2640                         ifp->if_ierrors++;
2641                         goto next;
2642                 }
2643
2644                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2645                 flags2 = le16toh(hdr->rxh_flags2);
2646
2647                 hdr_extra = 0;
2648                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2649                         hdr_extra = 2;
2650                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2651
2652                 buflen = le16toh(hdr->rxh_buflen);
2653                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2654                         if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
2655                                   __func__, hdr_extra);
2656                         ifp->if_ierrors++;
2657                         m_freem(m);
2658                         goto next;
2659                 }
2660
2661                 bcopy((uint8_t *)(hdr + 1) + hdr_extra, &plcp, sizeof(plcp));
2662                 rssi = bwi_calc_rssi(sc, hdr);
2663                 noise = bwi_calc_noise(sc);
2664
2665                 m->m_pkthdr.rcvif = ifp;
2666                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2667                 m_adj(m, sizeof(*hdr) + wh_ofs);
2668
2669                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2670                         rate = bwi_plcp2rate(plcp, IEEE80211_T_OFDM);
2671                 else
2672                         rate = bwi_plcp2rate(plcp, IEEE80211_T_CCK);
2673
2674                 /* RX radio tap */
2675                 if (ieee80211_radiotap_active(ic))
2676                         bwi_rx_radiotap(sc, m, hdr, &plcp, rate, rssi, noise);
2677
2678                 m_adj(m, -IEEE80211_CRC_LEN);
2679
2680                 BWI_UNLOCK(sc);
2681
2682                 wh = mtod(m, struct ieee80211_frame_min *);
2683                 ni = ieee80211_find_rxnode(ic, wh);
2684                 if (ni != NULL) {
2685                         type = ieee80211_input(ni, m, rssi - noise, noise);
2686                         ieee80211_free_node(ni);
2687                 } else
2688                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
2689                 if (type == IEEE80211_FC0_TYPE_DATA) {
2690                         rx_data = 1;
2691                         sc->sc_rx_rate = rate;
2692                 }
2693
2694                 BWI_LOCK(sc);
2695 next:
2696                 idx = (idx + 1) % BWI_RX_NDESC;
2697
2698                 if (sc->sc_flags & BWI_F_STOP) {
2699                         /*
2700                          * Take the fast lane, don't do
2701                          * any damage to softc
2702                          */
2703                         return -1;
2704                 }
2705         }
2706
2707         rbd->rbd_idx = idx;
2708         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2709                         BUS_DMASYNC_PREWRITE);
2710
2711         return rx_data;
2712 }
2713
2714 static int
2715 bwi_rxeof32(struct bwi_softc *sc)
2716 {
2717         uint32_t val, rx_ctrl;
2718         int end_idx, rx_data;
2719
2720         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2721
2722         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2723         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2724                   sizeof(struct bwi_desc32);
2725
2726         rx_data = bwi_rxeof(sc, end_idx);
2727         if (rx_data >= 0) {
2728                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2729                             end_idx * sizeof(struct bwi_desc32));
2730         }
2731         return rx_data;
2732 }
2733
2734 static int
2735 bwi_rxeof64(struct bwi_softc *sc)
2736 {
2737         /* TODO:64 */
2738         return 0;
2739 }
2740
2741 static void
2742 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2743 {
2744         int i;
2745
2746         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2747
2748 #define NRETRY 10
2749
2750         for (i = 0; i < NRETRY; ++i) {
2751                 uint32_t status;
2752
2753                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2754                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2755                     BWI_RX32_STATUS_STATE_DISABLED)
2756                         break;
2757
2758                 DELAY(1000);
2759         }
2760         if (i == NRETRY)
2761                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
2762
2763 #undef NRETRY
2764
2765         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2766 }
2767
2768 static void
2769 bwi_free_txstats32(struct bwi_softc *sc)
2770 {
2771         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2772 }
2773
2774 static void
2775 bwi_free_rx_ring32(struct bwi_softc *sc)
2776 {
2777         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2778         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2779         int i;
2780
2781         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2782
2783         for (i = 0; i < BWI_RX_NDESC; ++i) {
2784                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2785
2786                 if (rb->rb_mbuf != NULL) {
2787                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2788                         m_freem(rb->rb_mbuf);
2789                         rb->rb_mbuf = NULL;
2790                 }
2791         }
2792 }
2793
2794 static void
2795 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2796 {
2797         struct bwi_ring_data *rd;
2798         struct bwi_txbuf_data *tbd;
2799         struct ifnet *ifp = sc->sc_ifp;
2800         uint32_t state, val;
2801         int i;
2802
2803         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2804         rd = &sc->sc_tx_rdata[ring_idx];
2805         tbd = &sc->sc_tx_bdata[ring_idx];
2806
2807 #define NRETRY 10
2808
2809         for (i = 0; i < NRETRY; ++i) {
2810                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2811                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2812                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2813                     state == BWI_TX32_STATUS_STATE_IDLE ||
2814                     state == BWI_TX32_STATUS_STATE_STOPPED)
2815                         break;
2816
2817                 DELAY(1000);
2818         }
2819         if (i == NRETRY) {
2820                 if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
2821                           __func__, ring_idx);
2822         }
2823
2824         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2825         for (i = 0; i < NRETRY; ++i) {
2826                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2827                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2828                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2829                         break;
2830
2831                 DELAY(1000);
2832         }
2833         if (i == NRETRY)
2834                 if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
2835                      __func__, ring_idx);
2836
2837 #undef NRETRY
2838
2839         DELAY(1000);
2840
2841         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2842
2843         for (i = 0; i < BWI_TX_NDESC; ++i) {
2844                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2845
2846                 if (tb->tb_mbuf != NULL) {
2847                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2848                         m_freem(tb->tb_mbuf);
2849                         tb->tb_mbuf = NULL;
2850                 }
2851                 if (tb->tb_ni != NULL) {
2852                         ieee80211_free_node(tb->tb_ni);
2853                         tb->tb_ni = NULL;
2854                 }
2855         }
2856 }
2857
2858 static void
2859 bwi_free_txstats64(struct bwi_softc *sc)
2860 {
2861         /* TODO:64 */
2862 }
2863
2864 static void
2865 bwi_free_rx_ring64(struct bwi_softc *sc)
2866 {
2867         /* TODO:64 */
2868 }
2869
2870 static void
2871 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2872 {
2873         /* TODO:64 */
2874 }
2875
2876 /* XXX does not belong here */
2877 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
2878 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
2879
2880 static __inline void
2881 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
2882 {
2883         uint32_t plcp;
2884
2885         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
2886                     IEEE80211_OFDM_PLCP_RATE_MASK) |
2887                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
2888         *plcp0 = htole32(plcp);
2889 }
2890
2891 static __inline void
2892 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
2893                    uint8_t rate)
2894 {
2895         int len, service, pkt_bitlen;
2896
2897         pkt_bitlen = pkt_len * NBBY;
2898         len = howmany(pkt_bitlen * 2, rate);
2899
2900         service = IEEE80211_PLCP_SERVICE_LOCKED;
2901         if (rate == (11 * 2)) {
2902                 int pkt_bitlen1;
2903
2904                 /*
2905                  * PLCP service field needs to be adjusted,
2906                  * if TX rate is 11Mbytes/s
2907                  */
2908                 pkt_bitlen1 = len * 11;
2909                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
2910                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
2911         }
2912
2913         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
2914         plcp->i_service = service;
2915         plcp->i_length = htole16(len);
2916         /* NOTE: do NOT touch i_crc */
2917 }
2918
2919 static __inline void
2920 bwi_plcp_header(const struct ieee80211_rate_table *rt,
2921         void *plcp, int pkt_len, uint8_t rate)
2922 {
2923         enum ieee80211_phytype modtype;
2924
2925         /*
2926          * Assume caller has zeroed 'plcp'
2927          */
2928         modtype = ieee80211_rate2phytype(rt, rate);
2929         if (modtype == IEEE80211_T_OFDM)
2930                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
2931         else if (modtype == IEEE80211_T_DS)
2932                 bwi_ds_plcp_header(plcp, pkt_len, rate);
2933         else
2934                 panic("unsupport modulation type %u\n", modtype);
2935 }
2936
2937 static int
2938 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2939           struct ieee80211_node *ni)
2940 {
2941         struct ieee80211vap *vap = ni->ni_vap;
2942         struct ifnet *ifp = sc->sc_ifp;
2943         struct ieee80211com *ic = ifp->if_l2com;
2944         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2945         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2946         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
2947         struct bwi_mac *mac;
2948         struct bwi_txbuf_hdr *hdr;
2949         struct ieee80211_frame *wh;
2950         const struct ieee80211_txparam *tp;
2951         uint8_t rate, rate_fb;
2952         uint32_t mac_ctrl;
2953         uint16_t phy_ctrl;
2954         bus_addr_t paddr;
2955         int type, ismcast, pkt_len, error, rix;
2956 #if 0
2957         const uint8_t *p;
2958         int i;
2959 #endif
2960
2961         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
2962             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
2963         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2964
2965         wh = mtod(m, struct ieee80211_frame *);
2966         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2967         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2968
2969         /* Get 802.11 frame len before prepending TX header */
2970         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
2971
2972         /*
2973          * Find TX rate
2974          */
2975         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
2976         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
2977                 rate = rate_fb = tp->mgmtrate;
2978         } else if (ismcast) {
2979                 rate = rate_fb = tp->mcastrate;
2980         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
2981                 rate = rate_fb = tp->ucastrate;
2982         } else {
2983                 rix = ieee80211_ratectl_rate(ni, NULL, pkt_len);
2984                 rate = ni->ni_txrate;
2985
2986                 if (rix > 0) {
2987                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
2988                                   IEEE80211_RATE_VAL;
2989                 } else {
2990                         rate_fb = rate;
2991                 }
2992         }
2993         tb->tb_rate[0] = rate;
2994         tb->tb_rate[1] = rate_fb;
2995         sc->sc_tx_rate = rate;
2996
2997         /*
2998          * TX radio tap
2999          */
3000         if (ieee80211_radiotap_active_vap(vap)) {
3001                 sc->sc_tx_th.wt_flags = 0;
3002                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3003                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3004                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
3005                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3006                     rate != (1 * 2)) {
3007                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3008                 }
3009                 sc->sc_tx_th.wt_rate = rate;
3010
3011                 ieee80211_radiotap_tx(vap, m);
3012         }
3013
3014         /*
3015          * Setup the embedded TX header
3016          */
3017         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
3018         if (m == NULL) {
3019                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3020                 return ENOBUFS;
3021         }
3022         hdr = mtod(m, struct bwi_txbuf_hdr *);
3023
3024         bzero(hdr, sizeof(*hdr));
3025
3026         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3027         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3028
3029         if (!ismcast) {
3030                 uint16_t dur;
3031
3032                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
3033                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
3034
3035                 hdr->txh_fb_duration = htole16(dur);
3036         }
3037
3038         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3039                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3040
3041         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3042         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3043
3044         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3045                              BWI_TXH_PHY_C_ANTMODE_MASK);
3046         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
3047                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3048         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3049                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3050
3051         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3052         if (!ismcast)
3053                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3054         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
3055                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3056
3057         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3058         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3059
3060         /* Catch any further usage */
3061         hdr = NULL;
3062         wh = NULL;
3063
3064         /* DMA load */
3065         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3066                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3067         if (error && error != EFBIG) {
3068                 if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3069                     __func__, error);
3070                 goto back;
3071         }
3072
3073         if (error) {    /* error == EFBIG */
3074                 struct mbuf *m_new;
3075
3076                 m_new = m_defrag(m, M_NOWAIT);
3077                 if (m_new == NULL) {
3078                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3079                             __func__);
3080                         error = ENOBUFS;
3081                         goto back;
3082                 } else {
3083                         m = m_new;
3084                 }
3085
3086                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3087                                              bwi_dma_buf_addr, &paddr,
3088                                              BUS_DMA_NOWAIT);
3089                 if (error) {
3090                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3091                             __func__, error);
3092                         goto back;
3093                 }
3094         }
3095         error = 0;
3096
3097         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3098
3099         tb->tb_mbuf = m;
3100         tb->tb_ni = ni;
3101
3102 #if 0
3103         p = mtod(m, const uint8_t *);
3104         for (i = 0; i < m->m_pkthdr.len; ++i) {
3105                 if (i != 0 && i % 8 == 0)
3106                         printf("\n");
3107                 printf("%02x ", p[i]);
3108         }
3109         printf("\n");
3110 #endif
3111         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3112                 idx, pkt_len, m->m_pkthdr.len);
3113
3114         /* Setup TX descriptor */
3115         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3116         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3117                         BUS_DMASYNC_PREWRITE);
3118
3119         /* Kick start */
3120         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3121
3122 back:
3123         if (error)
3124                 m_freem(m);
3125         return error;
3126 }
3127
3128 static int
3129 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
3130           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
3131 {
3132         struct ifnet *ifp = sc->sc_ifp;
3133         struct ieee80211vap *vap = ni->ni_vap;
3134         struct ieee80211com *ic = ni->ni_ic;
3135         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3136         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3137         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3138         struct bwi_mac *mac;
3139         struct bwi_txbuf_hdr *hdr;
3140         struct ieee80211_frame *wh;
3141         uint8_t rate, rate_fb;
3142         uint32_t mac_ctrl;
3143         uint16_t phy_ctrl;
3144         bus_addr_t paddr;
3145         int ismcast, pkt_len, error;
3146
3147         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3148             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3149         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3150
3151         wh = mtod(m, struct ieee80211_frame *);
3152         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
3153
3154         /* Get 802.11 frame len before prepending TX header */
3155         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3156
3157         /*
3158          * Find TX rate
3159          */
3160         rate = params->ibp_rate0;
3161         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
3162                 /* XXX fall back to mcast/mgmt rate? */
3163                 m_freem(m);
3164                 return EINVAL;
3165         }
3166         if (params->ibp_try1 != 0) {
3167                 rate_fb = params->ibp_rate1;
3168                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
3169                         /* XXX fall back to rate0? */
3170                         m_freem(m);
3171                         return EINVAL;
3172                 }
3173         } else
3174                 rate_fb = rate;
3175         tb->tb_rate[0] = rate;
3176         tb->tb_rate[1] = rate_fb;
3177         sc->sc_tx_rate = rate;
3178
3179         /*
3180          * TX radio tap
3181          */
3182         if (ieee80211_radiotap_active_vap(vap)) {
3183                 sc->sc_tx_th.wt_flags = 0;
3184                 /* XXX IEEE80211_BPF_CRYPTO */
3185                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3186                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3187                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3188                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3189                 sc->sc_tx_th.wt_rate = rate;
3190
3191                 ieee80211_radiotap_tx(vap, m);
3192         }
3193
3194         /*
3195          * Setup the embedded TX header
3196          */
3197         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
3198         if (m == NULL) {
3199                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3200                 return ENOBUFS;
3201         }
3202         hdr = mtod(m, struct bwi_txbuf_hdr *);
3203
3204         bzero(hdr, sizeof(*hdr));
3205
3206         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3207         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3208
3209         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3210         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
3211                 uint16_t dur;
3212
3213                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
3214
3215                 hdr->txh_fb_duration = htole16(dur);
3216                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3217         }
3218
3219         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3220                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3221
3222         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3223         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3224
3225         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3226                              BWI_TXH_PHY_C_ANTMODE_MASK);
3227         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
3228                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3229                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3230         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3231                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3232
3233         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3234         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3235
3236         /* Catch any further usage */
3237         hdr = NULL;
3238         wh = NULL;
3239
3240         /* DMA load */
3241         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3242                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3243         if (error != 0) {
3244                 struct mbuf *m_new;
3245
3246                 if (error != EFBIG) {
3247                         if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3248                             __func__, error);
3249                         goto back;
3250                 }
3251                 m_new = m_defrag(m, M_NOWAIT);
3252                 if (m_new == NULL) {
3253                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3254                             __func__);
3255                         error = ENOBUFS;
3256                         goto back;
3257                 }
3258                 m = m_new;
3259                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3260                                              bwi_dma_buf_addr, &paddr,
3261                                              BUS_DMA_NOWAIT);
3262                 if (error) {
3263                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3264                             __func__, error);
3265                         goto back;
3266                 }
3267         }
3268
3269         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3270
3271         tb->tb_mbuf = m;
3272         tb->tb_ni = ni;
3273
3274         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3275                 idx, pkt_len, m->m_pkthdr.len);
3276
3277         /* Setup TX descriptor */
3278         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3279         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3280                         BUS_DMASYNC_PREWRITE);
3281
3282         /* Kick start */
3283         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3284 back:
3285         if (error)
3286                 m_freem(m);
3287         return error;
3288 }
3289
3290 static void
3291 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3292 {
3293         idx = (idx + 1) % BWI_TX_NDESC;
3294         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3295                     idx * sizeof(struct bwi_desc32));
3296 }
3297
3298 static void
3299 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3300 {
3301         /* TODO:64 */
3302 }
3303
3304 static void
3305 bwi_txeof_status32(struct bwi_softc *sc)
3306 {
3307         struct ifnet *ifp = sc->sc_ifp;
3308         uint32_t val, ctrl_base;
3309         int end_idx;
3310
3311         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3312
3313         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3314         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3315                   sizeof(struct bwi_desc32);
3316
3317         bwi_txeof_status(sc, end_idx);
3318
3319         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3320                     end_idx * sizeof(struct bwi_desc32));
3321
3322         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3323                 ifp->if_start(ifp);
3324 }
3325
3326 static void
3327 bwi_txeof_status64(struct bwi_softc *sc)
3328 {
3329         /* TODO:64 */
3330 }
3331
3332 static void
3333 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3334 {
3335         struct ifnet *ifp = sc->sc_ifp;
3336         struct bwi_txbuf_data *tbd;
3337         struct bwi_txbuf *tb;
3338         int ring_idx, buf_idx;
3339         struct ieee80211_node *ni;
3340         struct ieee80211vap *vap;
3341
3342         if (tx_id == 0) {
3343                 if_printf(ifp, "%s: zero tx id\n", __func__);
3344                 return;
3345         }
3346
3347         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3348         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3349
3350         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
3351         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
3352
3353         tbd = &sc->sc_tx_bdata[ring_idx];
3354         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
3355         tbd->tbd_used--;
3356
3357         tb = &tbd->tbd_buf[buf_idx];
3358         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3359                 "acked %d, data_txcnt %d, ni %p\n",
3360                 buf_idx, acked, data_txcnt, tb->tb_ni);
3361
3362         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3363
3364         ni = tb->tb_ni;
3365         if (tb->tb_ni != NULL) {
3366                 const struct bwi_txbuf_hdr *hdr =
3367                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
3368                 vap = ni->ni_vap;
3369
3370                 /* NB: update rate control only for unicast frames */
3371                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
3372                         /*
3373                          * Feed back 'acked and data_txcnt'.  Note that the
3374                          * generic AMRR code only understands one tx rate
3375                          * and the estimator doesn't handle real retry counts
3376                          * well so to avoid over-aggressive downshifting we
3377                          * treat any number of retries as "1".
3378                          */
3379                         ieee80211_ratectl_tx_complete(vap, ni,
3380                             (data_txcnt > 1) ? IEEE80211_RATECTL_TX_SUCCESS :
3381                                 IEEE80211_RATECTL_TX_FAILURE, &acked, NULL);
3382                 }
3383
3384                 /*
3385                  * Do any tx complete callback.  Note this must
3386                  * be done before releasing the node reference.
3387                  */
3388                 if (tb->tb_mbuf->m_flags & M_TXCB)
3389                         ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
3390
3391                 ieee80211_free_node(tb->tb_ni);
3392                 tb->tb_ni = NULL;
3393         }
3394         m_freem(tb->tb_mbuf);
3395         tb->tb_mbuf = NULL;
3396
3397         if (tbd->tbd_used == 0)
3398                 sc->sc_tx_timer = 0;
3399
3400         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3401 }
3402
3403 static void
3404 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3405 {
3406         struct bwi_txstats_data *st = sc->sc_txstats;
3407         int idx;
3408
3409         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3410
3411         idx = st->stats_idx;
3412         while (idx != end_idx) {
3413                 const struct bwi_txstats *stats = &st->stats[idx];
3414
3415                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3416                         int data_txcnt;
3417
3418                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3419                                                 BWI_TXS_TXCNT_DATA);
3420                         _bwi_txeof(sc, le16toh(stats->txs_id),
3421                                    stats->txs_flags & BWI_TXS_F_ACKED,
3422                                    data_txcnt);
3423                 }
3424                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3425         }
3426         st->stats_idx = idx;
3427 }
3428
3429 static void
3430 bwi_txeof(struct bwi_softc *sc)
3431 {
3432         struct ifnet *ifp = sc->sc_ifp;
3433
3434         for (;;) {
3435                 uint32_t tx_status0, tx_status1;
3436                 uint16_t tx_id;
3437                 int data_txcnt;
3438
3439                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3440                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3441                         break;
3442                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3443
3444                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3445                 data_txcnt = __SHIFTOUT(tx_status0,
3446                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3447
3448                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3449                         continue;
3450
3451                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
3452                     data_txcnt);
3453         }
3454
3455         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3456                 ifp->if_start(ifp);
3457 }
3458
3459 static int
3460 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3461 {
3462         bwi_power_on(sc, 1);
3463         return bwi_set_clock_mode(sc, clk_mode);
3464 }
3465
3466 static void
3467 bwi_bbp_power_off(struct bwi_softc *sc)
3468 {
3469         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3470         bwi_power_off(sc, 1);
3471 }
3472
3473 static int
3474 bwi_get_pwron_delay(struct bwi_softc *sc)
3475 {
3476         struct bwi_regwin *com, *old;
3477         struct bwi_clock_freq freq;
3478         uint32_t val;
3479         int error;
3480
3481         com = &sc->sc_com_regwin;
3482         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
3483
3484         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3485                 return 0;
3486
3487         error = bwi_regwin_switch(sc, com, &old);
3488         if (error)
3489                 return error;
3490
3491         bwi_get_clock_freq(sc, &freq);
3492
3493         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3494         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3495         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3496
3497         return bwi_regwin_switch(sc, old, NULL);
3498 }
3499
3500 static int
3501 bwi_bus_attach(struct bwi_softc *sc)
3502 {
3503         struct bwi_regwin *bus, *old;
3504         int error;
3505
3506         bus = &sc->sc_bus_regwin;
3507
3508         error = bwi_regwin_switch(sc, bus, &old);
3509         if (error)
3510                 return error;
3511
3512         if (!bwi_regwin_is_enabled(sc, bus))
3513                 bwi_regwin_enable(sc, bus, 0);
3514
3515         /* Disable interripts */
3516         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3517
3518         return bwi_regwin_switch(sc, old, NULL);
3519 }
3520
3521 static const char *
3522 bwi_regwin_name(const struct bwi_regwin *rw)
3523 {
3524         switch (rw->rw_type) {
3525         case BWI_REGWIN_T_COM:
3526                 return "COM";
3527         case BWI_REGWIN_T_BUSPCI:
3528                 return "PCI";
3529         case BWI_REGWIN_T_MAC:
3530                 return "MAC";
3531         case BWI_REGWIN_T_BUSPCIE:
3532                 return "PCIE";
3533         }
3534         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3535         return NULL;
3536 }
3537
3538 static uint32_t
3539 bwi_regwin_disable_bits(struct bwi_softc *sc)
3540 {
3541         uint32_t busrev;
3542
3543         /* XXX cache this */
3544         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3545         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3546                 "bus rev %u\n", busrev);
3547
3548         if (busrev == BWI_BUSREV_0)
3549                 return BWI_STATE_LO_DISABLE1;
3550         else if (busrev == BWI_BUSREV_1)
3551                 return BWI_STATE_LO_DISABLE2;
3552         else
3553                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3554 }
3555
3556 int
3557 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3558 {
3559         uint32_t val, disable_bits;
3560
3561         disable_bits = bwi_regwin_disable_bits(sc);
3562         val = CSR_READ_4(sc, BWI_STATE_LO);
3563
3564         if ((val & (BWI_STATE_LO_CLOCK |
3565                     BWI_STATE_LO_RESET |
3566                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3567                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3568                         bwi_regwin_name(rw));
3569                 return 1;
3570         } else {
3571                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3572                         bwi_regwin_name(rw));
3573                 return 0;
3574         }
3575 }
3576
3577 void
3578 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3579 {
3580         uint32_t state_lo, disable_bits;
3581         int i;
3582
3583         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3584
3585         /*
3586          * If current regwin is in 'reset' state, it was already disabled.
3587          */
3588         if (state_lo & BWI_STATE_LO_RESET) {
3589                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3590                         "%s was already disabled\n", bwi_regwin_name(rw));
3591                 return;
3592         }
3593
3594         disable_bits = bwi_regwin_disable_bits(sc);
3595
3596         /*
3597          * Disable normal clock
3598          */
3599         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3600         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3601
3602         /*
3603          * Wait until normal clock is disabled
3604          */
3605 #define NRETRY  1000
3606         for (i = 0; i < NRETRY; ++i) {
3607                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3608                 if (state_lo & disable_bits)
3609                         break;
3610                 DELAY(10);
3611         }
3612         if (i == NRETRY) {
3613                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3614                               bwi_regwin_name(rw));
3615         }
3616
3617         for (i = 0; i < NRETRY; ++i) {
3618                 uint32_t state_hi;
3619
3620                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3621                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3622                         break;
3623                 DELAY(10);
3624         }
3625         if (i == NRETRY) {
3626                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3627                               bwi_regwin_name(rw));
3628         }
3629 #undef NRETRY
3630
3631         /*
3632          * Reset and disable regwin with gated clock
3633          */
3634         state_lo = BWI_STATE_LO_RESET | disable_bits |
3635                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3636                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3637         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3638
3639         /* Flush pending bus write */
3640         CSR_READ_4(sc, BWI_STATE_LO);
3641         DELAY(1);
3642
3643         /* Reset and disable regwin */
3644         state_lo = BWI_STATE_LO_RESET | disable_bits |
3645                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3646         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3647
3648         /* Flush pending bus write */
3649         CSR_READ_4(sc, BWI_STATE_LO);
3650         DELAY(1);
3651 }
3652
3653 void
3654 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3655 {
3656         uint32_t state_lo, state_hi, imstate;
3657
3658         bwi_regwin_disable(sc, rw, flags);
3659
3660         /* Reset regwin with gated clock */
3661         state_lo = BWI_STATE_LO_RESET |
3662                    BWI_STATE_LO_CLOCK |
3663                    BWI_STATE_LO_GATED_CLOCK |
3664                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3665         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3666
3667         /* Flush pending bus write */
3668         CSR_READ_4(sc, BWI_STATE_LO);
3669         DELAY(1);
3670
3671         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3672         if (state_hi & BWI_STATE_HI_SERROR)
3673                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3674
3675         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3676         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3677                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3678                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3679         }
3680
3681         /* Enable regwin with gated clock */
3682         state_lo = BWI_STATE_LO_CLOCK |
3683                    BWI_STATE_LO_GATED_CLOCK |
3684                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3685         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3686
3687         /* Flush pending bus write */
3688         CSR_READ_4(sc, BWI_STATE_LO);
3689         DELAY(1);
3690
3691         /* Enable regwin with normal clock */
3692         state_lo = BWI_STATE_LO_CLOCK |
3693                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3694         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3695
3696         /* Flush pending bus write */
3697         CSR_READ_4(sc, BWI_STATE_LO);
3698         DELAY(1);
3699 }
3700
3701 static void
3702 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3703 {
3704         struct ifnet *ifp = sc->sc_ifp;
3705         struct bwi_mac *mac;
3706         struct bwi_myaddr_bssid buf;
3707         const uint8_t *p;
3708         uint32_t val;
3709         int n, i;
3710
3711         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3712             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3713         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3714
3715         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3716
3717         bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
3718         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3719
3720         n = sizeof(buf) / sizeof(val);
3721         p = (const uint8_t *)&buf;
3722         for (i = 0; i < n; ++i) {
3723                 int j;
3724
3725                 val = 0;
3726                 for (j = 0; j < sizeof(val); ++j)
3727                         val |= ((uint32_t)(*p++)) << (j * 8);
3728
3729                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3730         }
3731 }
3732
3733 static void
3734 bwi_updateslot(struct ifnet *ifp)
3735 {
3736         struct bwi_softc *sc = ifp->if_softc;
3737         struct ieee80211com *ic = ifp->if_l2com;
3738         struct bwi_mac *mac;
3739
3740         BWI_LOCK(sc);
3741         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
3742                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3743
3744                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3745                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3746                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3747
3748                 bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3749         }
3750         BWI_UNLOCK(sc);
3751 }
3752
3753 static void
3754 bwi_calibrate(void *xsc)
3755 {
3756         struct bwi_softc *sc = xsc;
3757 #ifdef INVARIANTS
3758         struct ifnet *ifp = sc->sc_ifp;
3759         struct ieee80211com *ic = ifp->if_l2com;
3760 #endif
3761         struct bwi_mac *mac;
3762
3763         BWI_ASSERT_LOCKED(sc);
3764
3765         KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
3766             ("opmode %d", ic->ic_opmode));
3767
3768         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3769             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3770         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3771
3772         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3773         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3774
3775         /* XXX 15 seconds */
3776         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3777 }
3778
3779 static int
3780 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3781 {
3782         struct bwi_mac *mac;
3783
3784         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3785             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3786         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3787
3788         return bwi_rf_calc_rssi(mac, hdr);
3789 }
3790
3791 static int
3792 bwi_calc_noise(struct bwi_softc *sc)
3793 {
3794         struct bwi_mac *mac;
3795
3796         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3797             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3798         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3799
3800         return bwi_rf_calc_noise(mac);
3801 }
3802
3803 static __inline uint8_t
3804 bwi_plcp2rate(const uint32_t plcp0, enum ieee80211_phytype type)
3805 {
3806         uint32_t plcp = le32toh(plcp0) & IEEE80211_OFDM_PLCP_RATE_MASK;
3807         return (ieee80211_plcp2rate(plcp, type));
3808 }
3809
3810 static void
3811 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3812     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
3813 {
3814         const struct ieee80211_frame_min *wh;
3815
3816         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3817         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3818                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3819
3820         wh = mtod(m, const struct ieee80211_frame_min *);
3821         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3822                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3823
3824         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3825         sc->sc_rx_th.wr_rate = rate;
3826         sc->sc_rx_th.wr_antsignal = rssi;
3827         sc->sc_rx_th.wr_antnoise = noise;
3828 }
3829
3830 static void
3831 bwi_led_attach(struct bwi_softc *sc)
3832 {
3833         const uint8_t *led_act = NULL;
3834         uint16_t gpio, val[BWI_LED_MAX];
3835         int i;
3836
3837 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3838
3839         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3840                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3841                         led_act = bwi_vendor_led_act[i].led_act;
3842                         break;
3843                 }
3844         }
3845         if (led_act == NULL)
3846                 led_act = bwi_default_led_act;
3847
3848 #undef N
3849
3850         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3851         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3852         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3853
3854         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3855         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3856         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3857
3858         for (i = 0; i < BWI_LED_MAX; ++i) {
3859                 struct bwi_led *led = &sc->sc_leds[i];
3860
3861                 if (val[i] == 0xff) {
3862                         led->l_act = led_act[i];
3863                 } else {
3864                         if (val[i] & BWI_LED_ACT_LOW)
3865                                 led->l_flags |= BWI_LED_F_ACTLOW;
3866                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3867                 }
3868                 led->l_mask = (1 << i);
3869
3870                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3871                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3872                     led->l_act == BWI_LED_ACT_BLINK) {
3873                         led->l_flags |= BWI_LED_F_BLINK;
3874                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3875                                 led->l_flags |= BWI_LED_F_POLLABLE;
3876                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3877                                 led->l_flags |= BWI_LED_F_SLOW;
3878
3879                         if (sc->sc_blink_led == NULL) {
3880                                 sc->sc_blink_led = led;
3881                                 if (led->l_flags & BWI_LED_F_SLOW)
3882                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3883                         }
3884                 }
3885
3886                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3887                         "%dth led, act %d, lowact %d\n", i,
3888                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3889         }
3890         callout_init_mtx(&sc->sc_led_blink_ch, &sc->sc_mtx, 0);
3891 }
3892
3893 static __inline uint16_t
3894 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3895 {
3896         if (led->l_flags & BWI_LED_F_ACTLOW)
3897                 on = !on;
3898         if (on)
3899                 val |= led->l_mask;
3900         else
3901                 val &= ~led->l_mask;
3902         return val;
3903 }
3904
3905 static void
3906 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3907 {
3908         struct ifnet *ifp = sc->sc_ifp;
3909         struct ieee80211com *ic = ifp->if_l2com;
3910         uint16_t val;
3911         int i;
3912
3913         if (nstate == IEEE80211_S_INIT) {
3914                 callout_stop(&sc->sc_led_blink_ch);
3915                 sc->sc_led_blinking = 0;
3916         }
3917
3918         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
3919                 return;
3920
3921         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3922         for (i = 0; i < BWI_LED_MAX; ++i) {
3923                 struct bwi_led *led = &sc->sc_leds[i];
3924                 int on;
3925
3926                 if (led->l_act == BWI_LED_ACT_UNKN ||
3927                     led->l_act == BWI_LED_ACT_NULL)
3928                         continue;
3929
3930                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3931                     nstate != IEEE80211_S_INIT)
3932                         continue;
3933
3934                 switch (led->l_act) {
3935                 case BWI_LED_ACT_ON:    /* Always on */
3936                         on = 1;
3937                         break;
3938                 case BWI_LED_ACT_OFF:   /* Always off */
3939                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
3940                         on = 0;
3941                         break;
3942                 default:
3943                         on = 1;
3944                         switch (nstate) {
3945                         case IEEE80211_S_INIT:
3946                                 on = 0;
3947                                 break;
3948                         case IEEE80211_S_RUN:
3949                                 if (led->l_act == BWI_LED_ACT_11G &&
3950                                     ic->ic_curmode != IEEE80211_MODE_11G)
3951                                         on = 0;
3952                                 break;
3953                         default:
3954                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3955                                         on = 0;
3956                                 break;
3957                         }
3958                         break;
3959                 }
3960
3961                 val = bwi_led_onoff(led, val, on);
3962         }
3963         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3964 }
3965 static void
3966 bwi_led_event(struct bwi_softc *sc, int event)
3967 {
3968         struct bwi_led *led = sc->sc_blink_led;
3969         int rate;
3970
3971         if (event == BWI_LED_EVENT_POLL) {
3972                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3973                         return;
3974                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3975                         return;
3976         }
3977
3978         sc->sc_led_ticks = ticks;
3979         if (sc->sc_led_blinking)
3980                 return;
3981
3982         switch (event) {
3983         case BWI_LED_EVENT_RX:
3984                 rate = sc->sc_rx_rate;
3985                 break;
3986         case BWI_LED_EVENT_TX:
3987                 rate = sc->sc_tx_rate;
3988                 break;
3989         case BWI_LED_EVENT_POLL:
3990                 rate = 0;
3991                 break;
3992         default:
3993                 panic("unknown LED event %d\n", event);
3994                 break;
3995         }
3996         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3997             bwi_led_duration[rate].off_dur);
3998 }
3999
4000 static void
4001 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
4002 {
4003         struct bwi_led *led = sc->sc_blink_led;
4004         uint16_t val;
4005
4006         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4007         val = bwi_led_onoff(led, val, 1);
4008         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4009
4010         if (led->l_flags & BWI_LED_F_SLOW) {
4011                 BWI_LED_SLOWDOWN(on_dur);
4012                 BWI_LED_SLOWDOWN(off_dur);
4013         }
4014
4015         sc->sc_led_blinking = 1;
4016         sc->sc_led_blink_offdur = off_dur;
4017
4018         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
4019 }
4020
4021 static void
4022 bwi_led_blink_next(void *xsc)
4023 {
4024         struct bwi_softc *sc = xsc;
4025         uint16_t val;
4026
4027         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4028         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
4029         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4030
4031         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
4032             bwi_led_blink_end, sc);
4033 }
4034
4035 static void
4036 bwi_led_blink_end(void *xsc)
4037 {
4038         struct bwi_softc *sc = xsc;
4039         sc->sc_led_blinking = 0;
4040 }
4041
4042 static void
4043 bwi_restart(void *xsc, int pending)
4044 {
4045         struct bwi_softc *sc = xsc;
4046         struct ifnet *ifp = sc->sc_ifp;
4047
4048         if_printf(ifp, "%s begin, help!\n", __func__);
4049         BWI_LOCK(sc);
4050         bwi_init_statechg(xsc, 0);
4051 #if 0
4052         bwi_start_locked(ifp);
4053 #endif
4054         BWI_UNLOCK(sc);
4055 }