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 #include "opt_wlan.h"
  43
  44 #include <sys/param.h>
  45 #include <sys/endian.h>
  46 #include <sys/kernel.h>
  47 #include <sys/bus.h>
  48 #include <sys/malloc.h>
  49 #include <sys/proc.h>
  50 #include <sys/rman.h>
  51 #include <sys/socket.h>
  52 #include <sys/sockio.h>
  53 #include <sys/sysctl.h>
  54 #include <sys/systm.h>
  55 #include <sys/taskqueue.h>
  56
  57 #include <net/if.h>
  58 #include <net/if_dl.h>
  59 #include <net/if_media.h>
  60 #include <net/if_types.h>
  61 #include <net/if_arp.h>
  62 #include <net/ethernet.h>
  63 #include <net/if_llc.h>
  64
  65 #include <net80211/ieee80211_var.h>
  66 #include <net80211/ieee80211_radiotap.h>
  67 #include <net80211/ieee80211_regdomain.h>
  68 #include <net80211/ieee80211_phy.h>
  69 #include <net80211/ieee80211_ratectl.h>
  70
  71 #include <net/bpf.h>
  72
  73 #ifdef INET
  74 #include <netinet/in.h>
  75 #include <netinet/if_ether.h>
  76 #endif
  77
  78 #include <machine/bus.h>
  79
  80 #include <dev/pci/pcivar.h>
  81 #include <dev/pci/pcireg.h>
  82
  83 #include <dev/bwi/bitops.h>
  84 #include <dev/bwi/if_bwireg.h>
  85 #include <dev/bwi/if_bwivar.h>
  86 #include <dev/bwi/bwimac.h>
  87 #include <dev/bwi/bwirf.h>
  88
  89 struct bwi_clock_freq {
  90         u_int           clkfreq_min;
  91         u_int           clkfreq_max;
  92 };
  93
  94 struct bwi_myaddr_bssid {
  95         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  96         uint8_t         bssid[IEEE80211_ADDR_LEN];
  97 } __packed;
  98
  99 static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
 100                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 101                     const uint8_t [IEEE80211_ADDR_LEN],
 102                     const uint8_t [IEEE80211_ADDR_LEN]);
 103 static void     bwi_vap_delete(struct ieee80211vap *);
 104 static void     bwi_init(void *);
 105 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t);
 106 static void     bwi_start(struct ifnet *);
 107 static void     bwi_start_locked(struct ifnet *);
 108 static int      bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 109                         const struct ieee80211_bpf_params *);
 110 static void     bwi_watchdog(void *);
 111 static void     bwi_scan_start(struct ieee80211com *);
 112 static void     bwi_set_channel(struct ieee80211com *);
 113 static void     bwi_scan_end(struct ieee80211com *);
 114 static int      bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 115 static void     bwi_updateslot(struct ifnet *);
 116 static int      bwi_media_change(struct ifnet *);
 117
 118 static void     bwi_calibrate(void *);
 119
 120 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 121 static int      bwi_calc_noise(struct bwi_softc *);
 122 static __inline uint8_t bwi_plcp2rate(uint32_t, enum ieee80211_phytype);
 123 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 124                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
 125
 126 static void     bwi_restart(void *, int);
 127 static void     bwi_init_statechg(struct bwi_softc *, int);
 128 static void     bwi_stop(struct bwi_softc *, int);
 129 static void     bwi_stop_locked(struct bwi_softc *, int);
 130 static int      bwi_newbuf(struct bwi_softc *, int, int);
 131 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 132                           struct ieee80211_node *);
 133 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
 134                           struct ieee80211_node *,
 135                           const struct ieee80211_bpf_params *);
 136
 137 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 138                                        bus_addr_t, int, int);
 139 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 140
 141 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 142 static int      bwi_init_rx_ring32(struct bwi_softc *);
 143 static int      bwi_init_txstats32(struct bwi_softc *);
 144 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 145 static void     bwi_free_rx_ring32(struct bwi_softc *);
 146 static void     bwi_free_txstats32(struct bwi_softc *);
 147 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 148 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 149                                     int, bus_addr_t, int);
 150 static int      bwi_rxeof32(struct bwi_softc *);
 151 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 152 static void     bwi_txeof_status32(struct bwi_softc *);
 153
 154 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 155 static int      bwi_init_rx_ring64(struct bwi_softc *);
 156 static int      bwi_init_txstats64(struct bwi_softc *);
 157 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 158 static void     bwi_free_rx_ring64(struct bwi_softc *);
 159 static void     bwi_free_txstats64(struct bwi_softc *);
 160 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 161 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 162                                     int, bus_addr_t, int);
 163 static int      bwi_rxeof64(struct bwi_softc *);
 164 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 165 static void     bwi_txeof_status64(struct bwi_softc *);
 166
 167 static int      bwi_rxeof(struct bwi_softc *, int);
 168 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 169 static void     bwi_txeof(struct bwi_softc *);
 170 static void     bwi_txeof_status(struct bwi_softc *, int);
 171 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 172 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 173
 174 static int      bwi_dma_alloc(struct bwi_softc *);
 175 static void     bwi_dma_free(struct bwi_softc *);
 176 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 177                                    struct bwi_ring_data *, bus_size_t,
 178                                    uint32_t);
 179 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 180 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 181 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 182 static void     bwi_dma_txstats_free(struct bwi_softc *);
 183 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 184 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 185                                  bus_size_t, int);
 186
 187 static void     bwi_power_on(struct bwi_softc *, int);
 188 static int      bwi_power_off(struct bwi_softc *, int);
 189 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 190 static int      bwi_set_clock_delay(struct bwi_softc *);
 191 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 192 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 193 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 194                                     const uint8_t *);
 195 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 196
 197 static void     bwi_get_card_flags(struct bwi_softc *);
 198 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 199
 200 static int      bwi_bus_attach(struct bwi_softc *);
 201 static int      bwi_bbp_attach(struct bwi_softc *);
 202 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 203 static void     bwi_bbp_power_off(struct bwi_softc *);
 204
 205 static const char *bwi_regwin_name(const struct bwi_regwin *);
 206 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 207 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 208 static int      bwi_regwin_select(struct bwi_softc *, int);
 209
 210 static void     bwi_led_attach(struct bwi_softc *);
 211 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 212 static void     bwi_led_event(struct bwi_softc *, int);
 213 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 214 static void     bwi_led_blink_next(void *);
 215 static void     bwi_led_blink_end(void *);
 216
 217 static const struct {
 218         uint16_t        did_min;
 219         uint16_t        did_max;
 220         uint16_t        bbp_id;
 221 } bwi_bbpid_map[] = {
 222         { 0x4301, 0x4301, 0x4301 },
 223         { 0x4305, 0x4307, 0x4307 },
 224         { 0x4402, 0x4403, 0x4402 },
 225         { 0x4610, 0x4615, 0x4610 },
 226         { 0x4710, 0x4715, 0x4710 },
 227         { 0x4720, 0x4725, 0x4309 }
 228 };
 229
 230 static const struct {
 231         uint16_t        bbp_id;
 232         int             nregwin;
 233 } bwi_regwin_count[] = {
 234         { 0x4301, 5 },
 235         { 0x4306, 6 },
 236         { 0x4307, 5 },
 237         { 0x4310, 8 },
 238         { 0x4401, 3 },
 239         { 0x4402, 3 },
 240         { 0x4610, 9 },
 241         { 0x4704, 9 },
 242         { 0x4710, 9 },
 243         { 0x5365, 7 }
 244 };
 245
 246 #define CLKSRC(src)                             \
 247 [BWI_CLKSRC_ ## src] = {                        \
 248         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 249         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 250 }
 251
 252 static const struct {
 253         u_int   freq_min;
 254         u_int   freq_max;
 255 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 256         CLKSRC(LP_OSC),
 257         CLKSRC(CS_OSC),
 258         CLKSRC(PCI)
 259 };
 260
 261 #undef CLKSRC
 262
 263 #define VENDOR_LED_ACT(vendor)                          \
 264 {                                                       \
 265         .vid = PCI_VENDOR_##vendor,                     \
 266         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 267 }
 268
 269 static const struct {
 270 #define PCI_VENDOR_COMPAQ       0x0e11
 271 #define PCI_VENDOR_LINKSYS      0x1737
 272         uint16_t        vid;
 273         uint8_t         led_act[BWI_LED_MAX];
 274 } bwi_vendor_led_act[] = {
 275         VENDOR_LED_ACT(COMPAQ),
 276         VENDOR_LED_ACT(LINKSYS)
 277 #undef PCI_VENDOR_LINKSYS
 278 #undef PCI_VENDOR_COMPAQ
 279 };
 280
 281 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 282         { BWI_VENDOR_LED_ACT_DEFAULT };
 283
 284 #undef VENDOR_LED_ACT
 285
 286 static const struct {
 287         int     on_dur;
 288         int     off_dur;
 289 } bwi_led_duration[109] = {
 290         [0]     = { 400, 100 },
 291         [2]     = { 150, 75 },
 292         [4]     = { 90, 45 },
 293         [11]    = { 66, 34 },
 294         [12]    = { 53, 26 },
 295         [18]    = { 42, 21 },
 296         [22]    = { 35, 17 },
 297         [24]    = { 32, 16 },
 298         [36]    = { 21, 10 },
 299         [48]    = { 16, 8 },
 300         [72]    = { 11, 5 },
 301         [96]    = { 9, 4 },
 302         [108]   = { 7, 3 }
 303 };
 304
 305 #ifdef BWI_DEBUG
 306 #ifdef BWI_DEBUG_VERBOSE
 307 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 308 #else
 309 static uint32_t bwi_debug;
 310 #endif
 311 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 312 #endif  /* BWI_DEBUG */
 313
 314 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 315
 316 uint16_t
 317 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 318 {
 319         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 320 }
 321
 322 static __inline void
 323 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 324                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 325                  int tx)
 326 {
 327         struct bwi_desc32 *desc = &desc_array[desc_idx];
 328         uint32_t ctrl, addr, addr_hi, addr_lo;
 329
 330         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 331         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 332
 333         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 334                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 335
 336         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 337                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 338         if (desc_idx == ndesc - 1)
 339                 ctrl |= BWI_DESC32_C_EOR;
 340         if (tx) {
 341                 /* XXX */
 342                 ctrl |= BWI_DESC32_C_FRAME_START |
 343                         BWI_DESC32_C_FRAME_END |
 344                         BWI_DESC32_C_INTR;
 345         }
 346
 347         desc->addr = htole32(addr);
 348         desc->ctrl = htole32(ctrl);
 349 }
 350
 351 int
 352 bwi_attach(struct bwi_softc *sc)
 353 {
 354         struct ieee80211com *ic;
 355         device_t dev = sc->sc_dev;
 356         struct ifnet *ifp;
 357         struct bwi_mac *mac;
 358         struct bwi_phy *phy;
 359         int i, error;
 360         uint8_t bands;
 361         uint8_t macaddr[IEEE80211_ADDR_LEN];
 362
 363         BWI_LOCK_INIT(sc);
 364
 365         /*
 366          * Initialize taskq and various tasks
 367          */
 368         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
 369                 taskqueue_thread_enqueue, &sc->sc_tq);
 370         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
 371                 device_get_nameunit(dev));
 372         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
 373
 374         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
 375
 376         /*
 377          * Initialize sysctl variables
 378          */
 379         sc->sc_fw_version = BWI_FW_VERSION3;
 380         sc->sc_led_idle = (2350 * hz) / 1000;
 381         sc->sc_led_blink = 1;
 382         sc->sc_txpwr_calib = 1;
 383 #ifdef BWI_DEBUG
 384         sc->sc_debug = bwi_debug;
 385 #endif
 386         bwi_power_on(sc, 1);
 387
 388         error = bwi_bbp_attach(sc);
 389         if (error)
 390                 goto fail;
 391
 392         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 393         if (error)
 394                 goto fail;
 395
 396         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 397                 error = bwi_set_clock_delay(sc);
 398                 if (error)
 399                         goto fail;
 400
 401                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 402                 if (error)
 403                         goto fail;
 404
 405                 error = bwi_get_pwron_delay(sc);
 406                 if (error)
 407                         goto fail;
 408         }
 409
 410         error = bwi_bus_attach(sc);
 411         if (error)
 412                 goto fail;
 413
 414         bwi_get_card_flags(sc);
 415
 416         bwi_led_attach(sc);
 417
 418         for (i = 0; i < sc->sc_nmac; ++i) {
 419                 struct bwi_regwin *old;
 420
 421                 mac = &sc->sc_mac[i];
 422                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 423                 if (error)
 424                         goto fail;
 425
 426                 error = bwi_mac_lateattach(mac);
 427                 if (error)
 428                         goto fail;
 429
 430                 error = bwi_regwin_switch(sc, old, NULL);
 431                 if (error)
 432                         goto fail;
 433         }
 434
 435         /*
 436          * XXX First MAC is known to exist
 437          * TODO2
 438          */
 439         mac = &sc->sc_mac[0];
 440         phy = &mac->mac_phy;
 441
 442         bwi_bbp_power_off(sc);
 443
 444         error = bwi_dma_alloc(sc);
 445         if (error)
 446                 goto fail;
 447
 448         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 449         if (ifp == NULL) {
 450                 device_printf(dev, "can not if_alloc()\n");
 451                 error = ENOSPC;
 452                 goto fail;
 453         }
 454         ic = ifp->if_l2com;
 455
 456         /* set these up early for if_printf use */
 457         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 458
 459         ifp->if_softc = sc;
 460         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 461         ifp->if_init = bwi_init;
 462         ifp->if_ioctl = bwi_ioctl;
 463         ifp->if_start = bwi_start;
 464         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 465         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 466         IFQ_SET_READY(&ifp->if_snd);
 467         callout_init_mtx(&sc->sc_watchdog_timer, &sc->sc_mtx, 0);
 468
 469         /*
 470          * Setup ratesets, phytype, channels and get MAC address
 471          */
 472         bands = 0;
 473         if (phy->phy_mode == IEEE80211_MODE_11B ||
 474             phy->phy_mode == IEEE80211_MODE_11G) {
 475                 setbit(&bands, IEEE80211_MODE_11B);
 476                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 477                         ic->ic_phytype = IEEE80211_T_DS;
 478                 } else {
 479                         ic->ic_phytype = IEEE80211_T_OFDM;
 480                         setbit(&bands, IEEE80211_MODE_11G);
 481                 }
 482
 483                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
 484                 if (IEEE80211_IS_MULTICAST(macaddr)) {
 485                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
 486                         if (IEEE80211_IS_MULTICAST(macaddr)) {
 487                                 device_printf(dev,
 488                                     "invalid MAC address: %6D\n",
 489                                     macaddr, ":");
 490                         }
 491                 }
 492         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 493                 /* TODO:11A */
 494                 setbit(&bands, IEEE80211_MODE_11A);
 495                 error = ENXIO;
 496                 goto fail;
 497         } else {
 498                 panic("unknown phymode %d\n", phy->phy_mode);
 499         }
 500
 501         /* Get locale */
 502         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 503                                    BWI_SPROM_CARD_INFO_LOCALE);
 504         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 505         /* XXX use locale */
 506         ieee80211_init_channels(ic, NULL, &bands);
 507
 508         ic->ic_ifp = ifp;
 509         ic->ic_caps = IEEE80211_C_STA |
 510                       IEEE80211_C_SHSLOT |
 511                       IEEE80211_C_SHPREAMBLE |
 512                       IEEE80211_C_WPA |
 513                       IEEE80211_C_BGSCAN |
 514                       IEEE80211_C_MONITOR;
 515         ic->ic_opmode = IEEE80211_M_STA;
 516         ieee80211_ifattach(ic, macaddr);
 517
 518         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 519
 520         /* override default methods */
 521         ic->ic_vap_create = bwi_vap_create;
 522         ic->ic_vap_delete = bwi_vap_delete;
 523         ic->ic_raw_xmit = bwi_raw_xmit;
 524         ic->ic_updateslot = bwi_updateslot;
 525         ic->ic_scan_start = bwi_scan_start;
 526         ic->ic_scan_end = bwi_scan_end;
 527         ic->ic_set_channel = bwi_set_channel;
 528
 529         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
 530
 531         ieee80211_radiotap_attach(ic,
 532             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
 533                 BWI_TX_RADIOTAP_PRESENT,
 534             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
 535                 BWI_RX_RADIOTAP_PRESENT);
 536
 537         /*
 538          * Add sysctl nodes
 539          */
 540         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 541                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 542                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 543                         "Firmware version");
 544         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 545                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 546                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 547                         "# ticks before LED enters idle state");
 548         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 549                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 550                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 551                        "Allow LED to blink");
 552         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 553                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 554                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 555                        "Enable software TX power calibration");
 556 #ifdef BWI_DEBUG
 557         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 558                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 559                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 560 #endif
 561         if (bootverbose)
 562                 ieee80211_announce(ic);
 563
 564         return (0);
 565 fail:
 566         BWI_LOCK_DESTROY(sc);
 567         return (error);
 568 }
 569
 570 int
 571 bwi_detach(struct bwi_softc *sc)
 572 {
 573         struct ifnet *ifp = sc->sc_ifp;
 574         struct ieee80211com *ic = ifp->if_l2com;
 575         int i;
 576
 577         bwi_stop(sc, 1);
 578         callout_drain(&sc->sc_led_blink_ch);
 579         callout_drain(&sc->sc_calib_ch);
 580         callout_drain(&sc->sc_watchdog_timer);
 581         ieee80211_ifdetach(ic);
 582
 583         for (i = 0; i < sc->sc_nmac; ++i)
 584                 bwi_mac_detach(&sc->sc_mac[i]);
 585         bwi_dma_free(sc);
 586         if_free(ifp);
 587         taskqueue_free(sc->sc_tq);
 588
 589         BWI_LOCK_DESTROY(sc);
 590
 591         return (0);
 592 }
 593
 594 static struct ieee80211vap *
 595 bwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 596     enum ieee80211_opmode opmode, int flags,
 597     const uint8_t bssid[IEEE80211_ADDR_LEN],
 598     const uint8_t mac[IEEE80211_ADDR_LEN])
 599 {
 600         struct bwi_vap *bvp;
 601         struct ieee80211vap *vap;
 602
 603         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 604                 return NULL;
 605         bvp = (struct bwi_vap *) malloc(sizeof(struct bwi_vap),
 606             M_80211_VAP, M_WAITOK | M_ZERO);
 607         if (bvp == NULL)
 608                 return NULL;
 609         vap = &bvp->bv_vap;
 610         /* enable s/w bmiss handling for sta mode */
 611         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 612             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 613
 614         /* override default methods */
 615         bvp->bv_newstate = vap->iv_newstate;
 616         vap->iv_newstate = bwi_newstate;
 617 #if 0
 618         vap->iv_update_beacon = bwi_beacon_update;
 619 #endif
 620         ieee80211_ratectl_init(vap);
 621
 622         /* complete setup */
 623         ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status);
 624         ic->ic_opmode = opmode;
 625         return vap;
 626 }
 627
 628 static void
 629 bwi_vap_delete(struct ieee80211vap *vap)
 630 {
 631         struct bwi_vap *bvp = BWI_VAP(vap);
 632
 633         ieee80211_ratectl_deinit(vap);
 634         ieee80211_vap_detach(vap);
 635         free(bvp, M_80211_VAP);
 636 }
 637
 638 void
 639 bwi_suspend(struct bwi_softc *sc)
 640 {
 641         bwi_stop(sc, 1);
 642 }
 643
 644 void
 645 bwi_resume(struct bwi_softc *sc)
 646 {
 647         struct ifnet *ifp = sc->sc_ifp;
 648
 649         if (ifp->if_flags & IFF_UP)
 650                 bwi_init(sc);
 651 }
 652
 653 int
 654 bwi_shutdown(struct bwi_softc *sc)
 655 {
 656         bwi_stop(sc, 1);
 657         return 0;
 658 }
 659
 660 static void
 661 bwi_power_on(struct bwi_softc *sc, int with_pll)
 662 {
 663         uint32_t gpio_in, gpio_out, gpio_en;
 664         uint16_t status;
 665
 666         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 667         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 668                 goto back;
 669
 670         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 671         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 672
 673         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 674         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 675         if (with_pll) {
 676                 /* Turn off PLL first */
 677                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 678                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 679         }
 680
 681         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 682         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 683         DELAY(1000);
 684
 685         if (with_pll) {
 686                 /* Turn on PLL */
 687                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 688                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 689                 DELAY(5000);
 690         }
 691
 692 back:
 693         /* Clear "Signaled Target Abort" */
 694         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 695         status &= ~PCIM_STATUS_STABORT;
 696         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 697 }
 698
 699 static int
 700 bwi_power_off(struct bwi_softc *sc, int with_pll)
 701 {
 702         uint32_t gpio_out, gpio_en;
 703
 704         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 705         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 706         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 707
 708         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 709         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 710         if (with_pll) {
 711                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 712                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 713         }
 714
 715         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 716         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 717         return 0;
 718 }
 719
 720 int
 721 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 722                   struct bwi_regwin **old_rw)
 723 {
 724         int error;
 725
 726         if (old_rw != NULL)
 727                 *old_rw = NULL;
 728
 729         if (!BWI_REGWIN_EXIST(rw))
 730                 return EINVAL;
 731
 732         if (sc->sc_cur_regwin != rw) {
 733                 error = bwi_regwin_select(sc, rw->rw_id);
 734                 if (error) {
 735                         device_printf(sc->sc_dev, "can't select regwin %d\n",
 736                                   rw->rw_id);
 737                         return error;
 738                 }
 739         }
 740
 741         if (old_rw != NULL)
 742                 *old_rw = sc->sc_cur_regwin;
 743         sc->sc_cur_regwin = rw;
 744         return 0;
 745 }
 746
 747 static int
 748 bwi_regwin_select(struct bwi_softc *sc, int id)
 749 {
 750         uint32_t win = BWI_PCIM_REGWIN(id);
 751         int i;
 752
 753 #define RETRY_MAX       50
 754         for (i = 0; i < RETRY_MAX; ++i) {
 755                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 756                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 757                         return 0;
 758                 DELAY(10);
 759         }
 760 #undef RETRY_MAX
 761
 762         return ENXIO;
 763 }
 764
 765 static void
 766 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 767 {
 768         uint32_t val;
 769
 770         val = CSR_READ_4(sc, BWI_ID_HI);
 771         *type = BWI_ID_HI_REGWIN_TYPE(val);
 772         *rev = BWI_ID_HI_REGWIN_REV(val);
 773
 774         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 775                 "vendor 0x%04x\n", *type, *rev,
 776                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 777 }
 778
 779 static int
 780 bwi_bbp_attach(struct bwi_softc *sc)
 781 {
 782 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
 783         uint16_t bbp_id, rw_type;
 784         uint8_t rw_rev;
 785         uint32_t info;
 786         int error, nregwin, i;
 787
 788         /*
 789          * Get 0th regwin information
 790          * NOTE: 0th regwin should exist
 791          */
 792         error = bwi_regwin_select(sc, 0);
 793         if (error) {
 794                 device_printf(sc->sc_dev, "can't select regwin 0\n");
 795                 return error;
 796         }
 797         bwi_regwin_info(sc, &rw_type, &rw_rev);
 798
 799         /*
 800          * Find out BBP id
 801          */
 802         bbp_id = 0;
 803         info = 0;
 804         if (rw_type == BWI_REGWIN_T_COM) {
 805                 info = CSR_READ_4(sc, BWI_INFO);
 806                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
 807
 808                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
 809
 810                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
 811         } else {
 812                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
 813                         if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
 814                             sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
 815                                 bbp_id = bwi_bbpid_map[i].bbp_id;
 816                                 break;
 817                         }
 818                 }
 819                 if (bbp_id == 0) {
 820                         device_printf(sc->sc_dev, "no BBP id for device id "
 821                                       "0x%04x\n", sc->sc_pci_did);
 822                         return ENXIO;
 823                 }
 824
 825                 info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
 826                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
 827         }
 828
 829         /*
 830          * Find out number of regwins
 831          */
 832         nregwin = 0;
 833         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
 834                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
 835         } else {
 836                 for (i = 0; i < N(bwi_regwin_count); ++i) {
 837                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
 838                                 nregwin = bwi_regwin_count[i].nregwin;
 839                                 break;
 840                         }
 841                 }
 842                 if (nregwin == 0) {
 843                         device_printf(sc->sc_dev, "no number of win for "
 844                                       "BBP id 0x%04x\n", bbp_id);
 845                         return ENXIO;
 846                 }
 847         }
 848
 849         /* Record BBP id/rev for later using */
 850         sc->sc_bbp_id = bbp_id;
 851         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
 852         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
 853         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
 854                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
 855
 856         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
 857                 nregwin, sc->sc_cap);
 858
 859         /*
 860          * Create rest of the regwins
 861          */
 862
 863         /* Don't re-create common regwin, if it is already created */
 864         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
 865
 866         for (; i < nregwin; ++i) {
 867                 /*
 868                  * Get regwin information
 869                  */
 870                 error = bwi_regwin_select(sc, i);
 871                 if (error) {
 872                         device_printf(sc->sc_dev,
 873                                       "can't select regwin %d\n", i);
 874                         return error;
 875                 }
 876                 bwi_regwin_info(sc, &rw_type, &rw_rev);
 877
 878                 /*
 879                  * Try attach:
 880                  * 1) Bus (PCI/PCIE) regwin
 881                  * 2) MAC regwin
 882                  * Ignore rest types of regwin
 883                  */
 884                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
 885                     rw_type == BWI_REGWIN_T_BUSPCIE) {
 886                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 887                                 device_printf(sc->sc_dev,
 888                                               "bus regwin already exists\n");
 889                         } else {
 890                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
 891                                                   rw_type, rw_rev);
 892                         }
 893                 } else if (rw_type == BWI_REGWIN_T_MAC) {
 894                         /* XXX ignore return value */
 895                         bwi_mac_attach(sc, i, rw_rev);
 896                 }
 897         }
 898
 899         /* At least one MAC shold exist */
 900         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
 901                 device_printf(sc->sc_dev, "no MAC was found\n");
 902                 return ENXIO;
 903         }
 904         KASSERT(sc->sc_nmac > 0, ("no mac's"));
 905
 906         /* Bus regwin must exist */
 907         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 908                 device_printf(sc->sc_dev, "no bus regwin was found\n");
 909                 return ENXIO;
 910         }
 911
 912         /* Start with first MAC */
 913         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
 914         if (error)
 915                 return error;
 916
 917         return 0;
 918 #undef N
 919 }
 920
 921 int
 922 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
 923 {
 924         struct bwi_regwin *old, *bus;
 925         uint32_t val;
 926         int error;
 927
 928         bus = &sc->sc_bus_regwin;
 929         KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
 930
 931         /*
 932          * Tell bus to generate requested interrupts
 933          */
 934         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 935                 /*
 936                  * NOTE: Read BWI_FLAGS from MAC regwin
 937                  */
 938                 val = CSR_READ_4(sc, BWI_FLAGS);
 939
 940                 error = bwi_regwin_switch(sc, bus, &old);
 941                 if (error)
 942                         return error;
 943
 944                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
 945         } else {
 946                 uint32_t mac_mask;
 947
 948                 mac_mask = 1 << mac->mac_id;
 949
 950                 error = bwi_regwin_switch(sc, bus, &old);
 951                 if (error)
 952                         return error;
 953
 954                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
 955                 val |= mac_mask << 8;
 956                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
 957         }
 958
 959         if (sc->sc_flags & BWI_F_BUS_INITED)
 960                 goto back;
 961
 962         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 963                 /*
 964                  * Enable prefetch and burst
 965                  */
 966                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
 967                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
 968
 969                 if (bus->rw_rev < 5) {
 970                         struct bwi_regwin *com = &sc->sc_com_regwin;
 971
 972                         /*
 973                          * Configure timeouts for bus operation
 974                          */
 975
 976                         /*
 977                          * Set service timeout and request timeout
 978                          */
 979                         CSR_SETBITS_4(sc, BWI_CONF_LO,
 980                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
 981                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
 982
 983                         /*
 984                          * If there is common regwin, we switch to that regwin
 985                          * and switch back to bus regwin once we have done.
 986                          */
 987                         if (BWI_REGWIN_EXIST(com)) {
 988                                 error = bwi_regwin_switch(sc, com, NULL);
 989                                 if (error)
 990                                         return error;
 991                         }
 992
 993                         /* Let bus know what we have changed */
 994                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
 995                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
 996                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
 997                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
 998
 999                         if (BWI_REGWIN_EXIST(com)) {
1000                                 error = bwi_regwin_switch(sc, bus, NULL);
1001                                 if (error)
1002                                         return error;
1003                         }
1004                 } else if (bus->rw_rev >= 11) {
1005                         /*
1006                          * Enable memory read multiple
1007                          */
1008                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1009                 }
1010         } else {
1011                 /* TODO:PCIE */
1012         }
1013
1014         sc->sc_flags |= BWI_F_BUS_INITED;
1015 back:
1016         return bwi_regwin_switch(sc, old, NULL);
1017 }
1018
1019 static void
1020 bwi_get_card_flags(struct bwi_softc *sc)
1021 {
1022 #define PCI_VENDOR_APPLE 0x106b
1023 #define PCI_VENDOR_DELL  0x1028
1024         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1025         if (sc->sc_card_flags == 0xffff)
1026                 sc->sc_card_flags = 0;
1027
1028         if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
1029             sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
1030             sc->sc_pci_revid == 0x74)
1031                 sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
1032
1033         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1034             sc->sc_pci_subdid == 0x4e && /* XXX */
1035             sc->sc_pci_revid > 0x40)
1036                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1037
1038         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1039 #undef PCI_VENDOR_DELL
1040 #undef PCI_VENDOR_APPLE
1041 }
1042
1043 static void
1044 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1045 {
1046         int i;
1047
1048         for (i = 0; i < 3; ++i) {
1049                 *((uint16_t *)eaddr + i) =
1050                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1051         }
1052 }
1053
1054 static void
1055 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1056 {
1057         struct bwi_regwin *com;
1058         uint32_t val;
1059         u_int div;
1060         int src;
1061
1062         bzero(freq, sizeof(*freq));
1063         com = &sc->sc_com_regwin;
1064
1065         KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
1066         KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
1067         KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
1068
1069         /*
1070          * Calculate clock frequency
1071          */
1072         src = -1;
1073         div = 0;
1074         if (com->rw_rev < 6) {
1075                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1076                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1077                         src = BWI_CLKSRC_PCI;
1078                         div = 64;
1079                 } else {
1080                         src = BWI_CLKSRC_CS_OSC;
1081                         div = 32;
1082                 }
1083         } else if (com->rw_rev < 10) {
1084                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1085
1086                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1087                 if (src == BWI_CLKSRC_LP_OSC) {
1088                         div = 1;
1089                 } else {
1090                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1091
1092                         /* Unknown source */
1093                         if (src >= BWI_CLKSRC_MAX)
1094                                 src = BWI_CLKSRC_CS_OSC;
1095                 }
1096         } else {
1097                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1098
1099                 src = BWI_CLKSRC_CS_OSC;
1100                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1101         }
1102
1103         KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
1104         KASSERT(div != 0, ("div zero"));
1105
1106         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1107                 src == BWI_CLKSRC_PCI ? "PCI" :
1108                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1109
1110         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1111         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1112
1113         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1114                 freq->clkfreq_min, freq->clkfreq_max);
1115 }
1116
1117 static int
1118 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1119 {
1120         struct bwi_regwin *old, *com;
1121         uint32_t clk_ctrl, clk_src;
1122         int error, pwr_off = 0;
1123
1124         com = &sc->sc_com_regwin;
1125         if (!BWI_REGWIN_EXIST(com))
1126                 return 0;
1127
1128         if (com->rw_rev >= 10 || com->rw_rev < 6)
1129                 return 0;
1130
1131         /*
1132          * For common regwin whose rev is [6, 10), the chip
1133          * must be capable to change clock mode.
1134          */
1135         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1136                 return 0;
1137
1138         error = bwi_regwin_switch(sc, com, &old);
1139         if (error)
1140                 return error;
1141
1142         if (clk_mode == BWI_CLOCK_MODE_FAST)
1143                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1144
1145         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1146         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1147
1148         switch (clk_mode) {
1149         case BWI_CLOCK_MODE_FAST:
1150                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1151                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1152                 break;
1153         case BWI_CLOCK_MODE_SLOW:
1154                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1155                 break;
1156         case BWI_CLOCK_MODE_DYN:
1157                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1158                               BWI_CLOCK_CTRL_IGNPLL |
1159                               BWI_CLOCK_CTRL_NODYN);
1160                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1161                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1162                         pwr_off = 1;
1163                 }
1164                 break;
1165         }
1166         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1167
1168         if (pwr_off)
1169                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1170
1171         return bwi_regwin_switch(sc, old, NULL);
1172 }
1173
1174 static int
1175 bwi_set_clock_delay(struct bwi_softc *sc)
1176 {
1177         struct bwi_regwin *old, *com;
1178         int error;
1179
1180         com = &sc->sc_com_regwin;
1181         if (!BWI_REGWIN_EXIST(com))
1182                 return 0;
1183
1184         error = bwi_regwin_switch(sc, com, &old);
1185         if (error)
1186                 return error;
1187
1188         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1189                 if (sc->sc_bbp_rev == 0)
1190                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1191                 else if (sc->sc_bbp_rev == 1)
1192                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1193         }
1194
1195         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1196                 if (com->rw_rev >= 10) {
1197                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1198                 } else {
1199                         struct bwi_clock_freq freq;
1200
1201                         bwi_get_clock_freq(sc, &freq);
1202                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1203                                 howmany(freq.clkfreq_max * 150, 1000000));
1204                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1205                                 howmany(freq.clkfreq_max * 15, 1000000));
1206                 }
1207         }
1208
1209         return bwi_regwin_switch(sc, old, NULL);
1210 }
1211
1212 static void
1213 bwi_init(void *xsc)
1214 {
1215         struct bwi_softc *sc = xsc;
1216         struct ifnet *ifp = sc->sc_ifp;
1217         struct ieee80211com *ic = ifp->if_l2com;
1218
1219         BWI_LOCK(sc);
1220         bwi_init_statechg(sc, 1);
1221         BWI_UNLOCK(sc);
1222
1223         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1224                 ieee80211_start_all(ic);                /* start all vap's */
1225 }
1226
1227 static void
1228 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1229 {
1230         struct ifnet *ifp = sc->sc_ifp;
1231         struct bwi_mac *mac;
1232         int error;
1233
1234         bwi_stop_locked(sc, statechg);
1235
1236         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1237
1238         /* TODO: 2 MAC */
1239
1240         mac = &sc->sc_mac[0];
1241         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1242         if (error) {
1243                 if_printf(ifp, "%s: error %d on regwin switch\n",
1244                     __func__, error);
1245                 goto bad;
1246         }
1247         error = bwi_mac_init(mac);
1248         if (error) {
1249                 if_printf(ifp, "%s: error %d on MAC init\n", __func__, error);
1250                 goto bad;
1251         }
1252
1253         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1254
1255         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1256         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, IF_LLADDR(ifp));
1257
1258         bwi_mac_reset_hwkeys(mac);
1259
1260         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1261                 int i;
1262
1263 #define NRETRY  1000
1264                 /*
1265                  * Drain any possible pending TX status
1266                  */
1267                 for (i = 0; i < NRETRY; ++i) {
1268                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1269                              BWI_TXSTATUS0_VALID) == 0)
1270                                 break;
1271                         CSR_READ_4(sc, BWI_TXSTATUS1);
1272                 }
1273                 if (i == NRETRY)
1274                         if_printf(ifp, "%s: can't drain TX status\n", __func__);
1275 #undef NRETRY
1276         }
1277
1278         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1279                 bwi_mac_updateslot(mac, 1);
1280
1281         /* Start MAC */
1282         error = bwi_mac_start(mac);
1283         if (error) {
1284                 if_printf(ifp, "%s: error %d starting MAC\n", __func__, error);
1285                 goto bad;
1286         }
1287
1288         /* Clear stop flag before enabling interrupt */
1289         sc->sc_flags &= ~BWI_F_STOP;
1290
1291         ifp->if_drv_flags |= IFF_DRV_RUNNING;
1292         callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
1293
1294         /* Enable intrs */
1295         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1296         return;
1297 bad:
1298         bwi_stop_locked(sc, 1);
1299 }
1300
1301 static int
1302 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1303 {
1304 #define IS_RUNNING(ifp) \
1305         ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1306         struct bwi_softc *sc = ifp->if_softc;
1307         struct ieee80211com *ic = ifp->if_l2com;
1308         struct ifreq *ifr = (struct ifreq *) data;
1309         int error = 0, startall = 0;
1310
1311         switch (cmd) {
1312         case SIOCSIFFLAGS:
1313                 BWI_LOCK(sc);
1314                 if (IS_RUNNING(ifp)) {
1315                         struct bwi_mac *mac;
1316                         int promisc = -1;
1317
1318                         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1319                             ("current regwin type %d",
1320                             sc->sc_cur_regwin->rw_type));
1321                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1322
1323                         if ((ifp->if_flags & IFF_PROMISC) &&
1324                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1325                                 promisc = 1;
1326                                 sc->sc_flags |= BWI_F_PROMISC;
1327                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1328                                    (sc->sc_flags & BWI_F_PROMISC)) {
1329                                 promisc = 0;
1330                                 sc->sc_flags &= ~BWI_F_PROMISC;
1331                         }
1332
1333                         if (promisc >= 0)
1334                                 bwi_mac_set_promisc(mac, promisc);
1335                 }
1336
1337                 if (ifp->if_flags & IFF_UP) {
1338                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1339                                 bwi_init_statechg(sc, 1);
1340                                 startall = 1;
1341                         }
1342                 } else {
1343                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1344                                 bwi_stop_locked(sc, 1);
1345                 }
1346                 BWI_UNLOCK(sc);
1347                 if (startall)
1348                         ieee80211_start_all(ic);
1349                 break;
1350         case SIOCGIFMEDIA:
1351                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1352                 break;
1353         case SIOCGIFADDR:
1354                 error = ether_ioctl(ifp, cmd, data);
1355                 break;
1356         default:
1357                 error = EINVAL;
1358                 break;
1359         }
1360         return error;
1361 #undef IS_RUNNING
1362 }
1363
1364 static void
1365 bwi_start(struct ifnet *ifp)
1366 {
1367         struct bwi_softc *sc = ifp->if_softc;
1368
1369         BWI_LOCK(sc);
1370         bwi_start_locked(ifp);
1371         BWI_UNLOCK(sc);
1372 }
1373
1374 static void
1375 bwi_start_locked(struct ifnet *ifp)
1376 {
1377         struct bwi_softc *sc = ifp->if_softc;
1378         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1379         struct ieee80211_frame *wh;
1380         struct ieee80211_node *ni;
1381         struct ieee80211_key *k;
1382         struct mbuf *m;
1383         int trans, idx;
1384
1385         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1386                 return;
1387
1388         trans = 0;
1389         idx = tbd->tbd_idx;
1390
1391         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1392                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);       /* XXX: LOCK */
1393                 if (m == NULL)
1394                         break;
1395
1396                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1397                 wh = mtod(m, struct ieee80211_frame *);
1398                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1399                         k = ieee80211_crypto_encap(ni, m);
1400                         if (k == NULL) {
1401                                 ieee80211_free_node(ni);
1402                                 m_freem(m);
1403                                 ifp->if_oerrors++;
1404                                 continue;
1405                         }
1406                 }
1407                 wh = NULL;      /* Catch any invalid use */
1408
1409                 if (bwi_encap(sc, idx, m, ni) != 0) {
1410                         /* 'm' is freed in bwi_encap() if we reach here */
1411                         if (ni != NULL)
1412                                 ieee80211_free_node(ni);
1413                         ifp->if_oerrors++;
1414                         continue;
1415                 }
1416
1417                 trans = 1;
1418                 tbd->tbd_used++;
1419                 idx = (idx + 1) % BWI_TX_NDESC;
1420
1421                 ifp->if_opackets++;
1422
1423                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1424                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1425                         break;
1426                 }
1427         }
1428         tbd->tbd_idx = idx;
1429
1430         if (trans)
1431                 sc->sc_tx_timer = 5;
1432 }
1433
1434 static int
1435 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1436         const struct ieee80211_bpf_params *params)
1437 {
1438         struct ieee80211com *ic = ni->ni_ic;
1439         struct ifnet *ifp = ic->ic_ifp;
1440         struct bwi_softc *sc = ifp->if_softc;
1441         /* XXX wme? */
1442         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1443         int idx, error;
1444
1445         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1446                 ieee80211_free_node(ni);
1447                 m_freem(m);
1448                 return ENETDOWN;
1449         }
1450
1451         BWI_LOCK(sc);
1452         idx = tbd->tbd_idx;
1453         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
1454         if (params == NULL) {
1455                 /*
1456                  * Legacy path; interpret frame contents to decide
1457                  * precisely how to send the frame.
1458                  */
1459                 error = bwi_encap(sc, idx, m, ni);
1460         } else {
1461                 /*
1462                  * Caller supplied explicit parameters to use in
1463                  * sending the frame.
1464                  */
1465                 error = bwi_encap_raw(sc, idx, m, ni, params);
1466         }
1467         if (error == 0) {
1468                 ifp->if_opackets++;
1469                 if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
1470                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1471                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
1472                 sc->sc_tx_timer = 5;
1473         } else {
1474                 /* NB: m is reclaimed on encap failure */
1475                 ieee80211_free_node(ni);
1476                 ifp->if_oerrors++;
1477         }
1478         BWI_UNLOCK(sc);
1479         return error;
1480 }
1481
1482 static void
1483 bwi_watchdog(void *arg)
1484 {
1485         struct bwi_softc *sc;
1486         struct ifnet *ifp;
1487
1488         sc = arg;
1489         ifp = sc->sc_ifp;
1490         BWI_ASSERT_LOCKED(sc);
1491         if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) {
1492                 if_printf(ifp, "watchdog timeout\n");
1493                 ifp->if_oerrors++;
1494                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1495         }
1496         callout_reset(&sc->sc_watchdog_timer, hz, bwi_watchdog, sc);
1497 }
1498
1499 static void
1500 bwi_stop(struct bwi_softc *sc, int statechg)
1501 {
1502         BWI_LOCK(sc);
1503         bwi_stop_locked(sc, statechg);
1504         BWI_UNLOCK(sc);
1505 }
1506
1507 static void
1508 bwi_stop_locked(struct bwi_softc *sc, int statechg)
1509 {
1510         struct ifnet *ifp = sc->sc_ifp;
1511         struct bwi_mac *mac;
1512         int i, error, pwr_off = 0;
1513
1514         BWI_ASSERT_LOCKED(sc);
1515
1516         callout_stop(&sc->sc_calib_ch);
1517         callout_stop(&sc->sc_led_blink_ch);
1518         sc->sc_led_blinking = 0;
1519         sc->sc_flags |= BWI_F_STOP;
1520
1521         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1522                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1523                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1524                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1525
1526                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1527                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1528                 bwi_mac_stop(mac);
1529         }
1530
1531         for (i = 0; i < sc->sc_nmac; ++i) {
1532                 struct bwi_regwin *old_rw;
1533
1534                 mac = &sc->sc_mac[i];
1535                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1536                         continue;
1537
1538                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1539                 if (error)
1540                         continue;
1541
1542                 bwi_mac_shutdown(mac);
1543                 pwr_off = 1;
1544
1545                 bwi_regwin_switch(sc, old_rw, NULL);
1546         }
1547
1548         if (pwr_off)
1549                 bwi_bbp_power_off(sc);
1550
1551         sc->sc_tx_timer = 0;
1552         callout_stop(&sc->sc_watchdog_timer);
1553         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1554 }
1555
1556 void
1557 bwi_intr(void *xsc)
1558 {
1559         struct bwi_softc *sc = xsc;
1560         struct ifnet *ifp = sc->sc_ifp;
1561         struct bwi_mac *mac;
1562         uint32_t intr_status;
1563         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1564         int i, txrx_error, tx = 0, rx_data = -1;
1565
1566         BWI_LOCK(sc);
1567
1568         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1569             (sc->sc_flags & BWI_F_STOP)) {
1570                 BWI_UNLOCK(sc);
1571                 return;
1572         }
1573         /*
1574          * Get interrupt status
1575          */
1576         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1577         if (intr_status == 0xffffffff) {        /* Not for us */
1578                 BWI_UNLOCK(sc);
1579                 return;
1580         }
1581
1582         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1583
1584         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1585         if (intr_status == 0) {         /* Nothing is interesting */
1586                 BWI_UNLOCK(sc);
1587                 return;
1588         }
1589
1590         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1591             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1592         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1593
1594         txrx_error = 0;
1595         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1596         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1597                 uint32_t mask;
1598
1599                 if (BWI_TXRX_IS_RX(i))
1600                         mask = BWI_TXRX_RX_INTRS;
1601                 else
1602                         mask = BWI_TXRX_TX_INTRS;
1603
1604                 txrx_intr_status[i] =
1605                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1606
1607                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1608                          i, txrx_intr_status[i]);
1609
1610                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1611                         if_printf(ifp,
1612                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
1613                             __func__, i, txrx_intr_status[i]);
1614                         txrx_error = 1;
1615                 }
1616         }
1617         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1618
1619         /*
1620          * Acknowledge interrupt
1621          */
1622         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1623
1624         for (i = 0; i < BWI_TXRX_NRING; ++i)
1625                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1626
1627         /* Disable all interrupts */
1628         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1629
1630         /*
1631          * http://bcm-specs.sipsolutions.net/Interrupts
1632          * Says for this bit (0x800):
1633          * "Fatal Error
1634          *
1635          * We got this one while testing things when by accident the
1636          * template ram wasn't set to big endian when it should have
1637          * been after writing the initial values. It keeps on being
1638          * triggered, the only way to stop it seems to shut down the
1639          * chip."
1640          *
1641          * Suggesting that we should never get it and if we do we're not
1642          * feeding TX packets into the MAC correctly if we do...  Apparently,
1643          * it is valid only on mac version 5 and higher, but I couldn't
1644          * find a reference for that...  Since I see them from time to time
1645          * on my card, this suggests an error in the tx path still...
1646          */
1647         if (intr_status & BWI_INTR_PHY_TXERR) {
1648                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1649                         if_printf(ifp, "%s: intr PHY TX error\n", __func__);
1650                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1651                         BWI_UNLOCK(sc);
1652                         return;
1653                 }
1654         }
1655
1656         if (txrx_error) {
1657                 /* TODO: reset device */
1658         }
1659
1660         if (intr_status & BWI_INTR_TBTT)
1661                 bwi_mac_config_ps(mac);
1662
1663         if (intr_status & BWI_INTR_EO_ATIM)
1664                 if_printf(ifp, "EO_ATIM\n");
1665
1666         if (intr_status & BWI_INTR_PMQ) {
1667                 for (;;) {
1668                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1669                                 break;
1670                 }
1671                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1672         }
1673
1674         if (intr_status & BWI_INTR_NOISE)
1675                 if_printf(ifp, "intr noise\n");
1676
1677         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
1678                 rx_data = sc->sc_rxeof(sc);
1679                 if (sc->sc_flags & BWI_F_STOP) {
1680                         BWI_UNLOCK(sc);
1681                         return;
1682                 }
1683         }
1684
1685         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1686                 sc->sc_txeof_status(sc);
1687                 tx = 1;
1688         }
1689
1690         if (intr_status & BWI_INTR_TX_DONE) {
1691                 bwi_txeof(sc);
1692                 tx = 1;
1693         }
1694
1695         /* Re-enable interrupts */
1696         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1697
1698         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1699                 int evt = BWI_LED_EVENT_NONE;
1700
1701                 if (tx && rx_data > 0) {
1702                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1703                                 evt = BWI_LED_EVENT_RX;
1704                         else
1705                                 evt = BWI_LED_EVENT_TX;
1706                 } else if (tx) {
1707                         evt = BWI_LED_EVENT_TX;
1708                 } else if (rx_data > 0) {
1709                         evt = BWI_LED_EVENT_RX;
1710                 } else if (rx_data == 0) {
1711                         evt = BWI_LED_EVENT_POLL;
1712                 }
1713
1714                 if (evt != BWI_LED_EVENT_NONE)
1715                         bwi_led_event(sc, evt);
1716         }
1717
1718         BWI_UNLOCK(sc);
1719 }
1720
1721 static void
1722 bwi_scan_start(struct ieee80211com *ic)
1723 {
1724         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1725
1726         BWI_LOCK(sc);
1727         /* Enable MAC beacon promiscuity */
1728         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1729         BWI_UNLOCK(sc);
1730 }
1731
1732 static void
1733 bwi_set_channel(struct ieee80211com *ic)
1734 {
1735         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1736         struct ieee80211_channel *c = ic->ic_curchan;
1737         struct bwi_mac *mac;
1738
1739         BWI_LOCK(sc);
1740         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1741             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1742         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1743         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
1744
1745         sc->sc_rates = ieee80211_get_ratetable(c);
1746
1747         /*
1748          * Setup radio tap channel freq and flags
1749          */
1750         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
1751                 htole16(c->ic_freq);
1752         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
1753                 htole16(c->ic_flags & 0xffff);
1754
1755         BWI_UNLOCK(sc);
1756 }
1757
1758 static void
1759 bwi_scan_end(struct ieee80211com *ic)
1760 {
1761         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1762
1763         BWI_LOCK(sc);
1764         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1765         BWI_UNLOCK(sc);
1766 }
1767
1768 static int
1769 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1770 {
1771         struct bwi_vap *bvp = BWI_VAP(vap);
1772         struct ieee80211com *ic= vap->iv_ic;
1773         struct ifnet *ifp = ic->ic_ifp;
1774         enum ieee80211_state ostate = vap->iv_state;
1775         struct bwi_softc *sc = ifp->if_softc;
1776         struct bwi_mac *mac;
1777         int error;
1778
1779         BWI_LOCK(sc);
1780
1781         callout_stop(&sc->sc_calib_ch);
1782
1783         if (nstate == IEEE80211_S_INIT)
1784                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1785
1786         bwi_led_newstate(sc, nstate);
1787
1788         error = bvp->bv_newstate(vap, nstate, arg);
1789         if (error != 0)
1790                 goto back;
1791
1792         /*
1793          * Clear the BSSID when we stop a STA
1794          */
1795         if (vap->iv_opmode == IEEE80211_M_STA) {
1796                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
1797                         /*
1798                          * Clear out the BSSID.  If we reassociate to
1799                          * the same AP, this will reinialize things
1800                          * correctly...
1801                          */
1802                         if (ic->ic_opmode == IEEE80211_M_STA &&
1803                             !(sc->sc_flags & BWI_F_STOP))
1804                                 bwi_set_bssid(sc, bwi_zero_addr);
1805                 }
1806         }
1807
1808         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1809                 /* Nothing to do */
1810         } else if (nstate == IEEE80211_S_RUN) {
1811                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
1812
1813                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1814                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1815                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1816
1817                 /* Initial TX power calibration */
1818                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1819 #ifdef notyet
1820                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1821 #else
1822                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1823 #endif
1824
1825                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1826         }
1827 back:
1828         BWI_UNLOCK(sc);
1829
1830         return error;
1831 }
1832
1833 static int
1834 bwi_media_change(struct ifnet *ifp)
1835 {
1836         int error = ieee80211_media_change(ifp);
1837         /* NB: only the fixed rate can change and that doesn't need a reset */
1838         return (error == ENETRESET ? 0 : error);
1839 }
1840
1841 static int
1842 bwi_dma_alloc(struct bwi_softc *sc)
1843 {
1844         int error, i, has_txstats;
1845         bus_addr_t lowaddr = 0;
1846         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1847         uint32_t txrx_ctrl_step = 0;
1848
1849         has_txstats = 0;
1850         for (i = 0; i < sc->sc_nmac; ++i) {
1851                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1852                         has_txstats = 1;
1853                         break;
1854                 }
1855         }
1856
1857         switch (sc->sc_bus_space) {
1858         case BWI_BUS_SPACE_30BIT:
1859         case BWI_BUS_SPACE_32BIT:
1860                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1861                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1862                 else
1863                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1864                 desc_sz = sizeof(struct bwi_desc32);
1865                 txrx_ctrl_step = 0x20;
1866
1867                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1868                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1869                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1870                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1871                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1872                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1873                 sc->sc_rxeof = bwi_rxeof32;
1874                 sc->sc_start_tx = bwi_start_tx32;
1875                 if (has_txstats) {
1876                         sc->sc_init_txstats = bwi_init_txstats32;
1877                         sc->sc_free_txstats = bwi_free_txstats32;
1878                         sc->sc_txeof_status = bwi_txeof_status32;
1879                 }
1880                 break;
1881
1882         case BWI_BUS_SPACE_64BIT:
1883                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
1884                 desc_sz = sizeof(struct bwi_desc64);
1885                 txrx_ctrl_step = 0x40;
1886
1887                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
1888                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
1889                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
1890                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
1891                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
1892                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
1893                 sc->sc_rxeof = bwi_rxeof64;
1894                 sc->sc_start_tx = bwi_start_tx64;
1895                 if (has_txstats) {
1896                         sc->sc_init_txstats = bwi_init_txstats64;
1897                         sc->sc_free_txstats = bwi_free_txstats64;
1898                         sc->sc_txeof_status = bwi_txeof_status64;
1899                 }
1900                 break;
1901         }
1902
1903         KASSERT(lowaddr != 0, ("lowaddr zero"));
1904         KASSERT(desc_sz != 0, ("desc_sz zero"));
1905         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
1906
1907         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
1908         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
1909
1910         /*
1911          * Create top level DMA tag
1912          */
1913         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
1914                                BWI_ALIGN, 0,            /* alignment, bounds */
1915                                lowaddr,                 /* lowaddr */
1916                                BUS_SPACE_MAXADDR,       /* highaddr */
1917                                NULL, NULL,              /* filter, filterarg */
1918                                MAXBSIZE,                /* maxsize */
1919                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
1920                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1921                                BUS_DMA_ALLOCNOW,        /* flags */
1922                                NULL, NULL,              /* lockfunc, lockarg */
1923                                &sc->sc_parent_dtag);
1924         if (error) {
1925                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
1926                 return error;
1927         }
1928
1929 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
1930
1931         /*
1932          * Create TX ring DMA stuffs
1933          */
1934         error = bus_dma_tag_create(sc->sc_parent_dtag,
1935                                 BWI_RING_ALIGN, 0,
1936                                 BUS_SPACE_MAXADDR,
1937                                 BUS_SPACE_MAXADDR,
1938                                 NULL, NULL,
1939                                 tx_ring_sz,
1940                                 1,
1941                                 BUS_SPACE_MAXSIZE_32BIT,
1942                                 BUS_DMA_ALLOCNOW,
1943                                 NULL, NULL,
1944                                 &sc->sc_txring_dtag);
1945         if (error) {
1946                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
1947                 return error;
1948         }
1949
1950         for (i = 0; i < BWI_TX_NRING; ++i) {
1951                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
1952                                            &sc->sc_tx_rdata[i], tx_ring_sz,
1953                                            TXRX_CTRL(i));
1954                 if (error) {
1955                         device_printf(sc->sc_dev, "%dth TX ring "
1956                                       "DMA alloc failed\n", i);
1957                         return error;
1958                 }
1959         }
1960
1961         /*
1962          * Create RX ring DMA stuffs
1963          */
1964         error = bus_dma_tag_create(sc->sc_parent_dtag,
1965                                 BWI_RING_ALIGN, 0,
1966                                 BUS_SPACE_MAXADDR,
1967                                 BUS_SPACE_MAXADDR,
1968                                 NULL, NULL,
1969                                 rx_ring_sz,
1970                                 1,
1971                                 BUS_SPACE_MAXSIZE_32BIT,
1972                                 BUS_DMA_ALLOCNOW,
1973                                 NULL, NULL,
1974                                 &sc->sc_rxring_dtag);
1975         if (error) {
1976                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
1977                 return error;
1978         }
1979
1980         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
1981                                    rx_ring_sz, TXRX_CTRL(0));
1982         if (error) {
1983                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
1984                 return error;
1985         }
1986
1987         if (has_txstats) {
1988                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
1989                 if (error) {
1990                         device_printf(sc->sc_dev,
1991                                       "TX stats DMA alloc failed\n");
1992                         return error;
1993                 }
1994         }
1995
1996 #undef TXRX_CTRL
1997
1998         return bwi_dma_mbuf_create(sc);
1999 }
2000
2001 static void
2002 bwi_dma_free(struct bwi_softc *sc)
2003 {
2004         if (sc->sc_txring_dtag != NULL) {
2005                 int i;
2006
2007                 for (i = 0; i < BWI_TX_NRING; ++i) {
2008                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2009
2010                         if (rd->rdata_desc != NULL) {
2011                                 bus_dmamap_unload(sc->sc_txring_dtag,
2012                                                   rd->rdata_dmap);
2013                                 bus_dmamem_free(sc->sc_txring_dtag,
2014                                                 rd->rdata_desc,
2015                                                 rd->rdata_dmap);
2016                         }
2017                 }
2018                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2019         }
2020
2021         if (sc->sc_rxring_dtag != NULL) {
2022                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2023
2024                 if (rd->rdata_desc != NULL) {
2025                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2026                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2027                                         rd->rdata_dmap);
2028                 }
2029                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2030         }
2031
2032         bwi_dma_txstats_free(sc);
2033         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2034
2035         if (sc->sc_parent_dtag != NULL)
2036                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2037 }
2038
2039 static int
2040 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2041                    struct bwi_ring_data *rd, bus_size_t size,
2042                    uint32_t txrx_ctrl)
2043 {
2044         int error;
2045
2046         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2047                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2048                                  &rd->rdata_dmap);
2049         if (error) {
2050                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2051                 return error;
2052         }
2053
2054         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2055                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2056                                 BUS_DMA_NOWAIT);
2057         if (error) {
2058                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2059                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2060                 rd->rdata_desc = NULL;
2061                 return error;
2062         }
2063
2064         rd->rdata_txrx_ctrl = txrx_ctrl;
2065         return 0;
2066 }
2067
2068 static int
2069 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2070                       bus_size_t desc_sz)
2071 {
2072         struct bwi_txstats_data *st;
2073         bus_size_t dma_size;
2074         int error;
2075
2076         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
2077         if (st == NULL) {
2078                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
2079                 return ENOMEM;
2080         }
2081         sc->sc_txstats = st;
2082
2083         /*
2084          * Create TX stats descriptor DMA stuffs
2085          */
2086         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2087
2088         error = bus_dma_tag_create(sc->sc_parent_dtag,
2089                                 BWI_RING_ALIGN,
2090                                 0,
2091                                 BUS_SPACE_MAXADDR,
2092                                 BUS_SPACE_MAXADDR,
2093                                 NULL, NULL,
2094                                 dma_size,
2095                                 1,
2096                                 BUS_SPACE_MAXSIZE_32BIT,
2097                                 BUS_DMA_ALLOCNOW,
2098                                 NULL, NULL,
2099                                 &st->stats_ring_dtag);
2100         if (error) {
2101                 device_printf(sc->sc_dev, "can't create txstats ring "
2102                               "DMA tag\n");
2103                 return error;
2104         }
2105
2106         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2107                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2108                                  &st->stats_ring_dmap);
2109         if (error) {
2110                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2111                               "DMA mem\n");
2112                 bus_dma_tag_destroy(st->stats_ring_dtag);
2113                 st->stats_ring_dtag = NULL;
2114                 return error;
2115         }
2116
2117         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2118                                 st->stats_ring, dma_size,
2119                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2120                                 BUS_DMA_NOWAIT);
2121         if (error) {
2122                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2123                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2124                                 st->stats_ring_dmap);
2125                 bus_dma_tag_destroy(st->stats_ring_dtag);
2126                 st->stats_ring_dtag = NULL;
2127                 return error;
2128         }
2129
2130         /*
2131          * Create TX stats DMA stuffs
2132          */
2133         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2134                            BWI_ALIGN);
2135
2136         error = bus_dma_tag_create(sc->sc_parent_dtag,
2137                                 BWI_ALIGN,
2138                                 0,
2139                                 BUS_SPACE_MAXADDR,
2140                                 BUS_SPACE_MAXADDR,
2141                                 NULL, NULL,
2142                                 dma_size,
2143                                 1,
2144                                 BUS_SPACE_MAXSIZE_32BIT,
2145                                 BUS_DMA_ALLOCNOW,
2146                                 NULL, NULL,
2147                                 &st->stats_dtag);
2148         if (error) {
2149                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2150                 return error;
2151         }
2152
2153         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2154                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2155                                  &st->stats_dmap);
2156         if (error) {
2157                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2158                 bus_dma_tag_destroy(st->stats_dtag);
2159                 st->stats_dtag = NULL;
2160                 return error;
2161         }
2162
2163         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2164                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2165                                 BUS_DMA_NOWAIT);
2166         if (error) {
2167                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2168                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2169                 bus_dma_tag_destroy(st->stats_dtag);
2170                 st->stats_dtag = NULL;
2171                 return error;
2172         }
2173
2174         st->stats_ctrl_base = ctrl_base;
2175         return 0;
2176 }
2177
2178 static void
2179 bwi_dma_txstats_free(struct bwi_softc *sc)
2180 {
2181         struct bwi_txstats_data *st;
2182
2183         if (sc->sc_txstats == NULL)
2184                 return;
2185         st = sc->sc_txstats;
2186
2187         if (st->stats_ring_dtag != NULL) {
2188                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2189                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2190                                 st->stats_ring_dmap);
2191                 bus_dma_tag_destroy(st->stats_ring_dtag);
2192         }
2193
2194         if (st->stats_dtag != NULL) {
2195                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2196                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2197                 bus_dma_tag_destroy(st->stats_dtag);
2198         }
2199
2200         free(st, M_DEVBUF);
2201 }
2202
2203 static void
2204 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2205 {
2206         KASSERT(nseg == 1, ("too many segments\n"));
2207         *((bus_addr_t *)arg) = seg->ds_addr;
2208 }
2209
2210 static int
2211 bwi_dma_mbuf_create(struct bwi_softc *sc)
2212 {
2213         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2214         int i, j, k, ntx, error;
2215
2216         /*
2217          * Create TX/RX mbuf DMA tag
2218          */
2219         error = bus_dma_tag_create(sc->sc_parent_dtag,
2220                                 1,
2221                                 0,
2222                                 BUS_SPACE_MAXADDR,
2223                                 BUS_SPACE_MAXADDR,
2224                                 NULL, NULL,
2225                                 MCLBYTES,
2226                                 1,
2227                                 BUS_SPACE_MAXSIZE_32BIT,
2228                                 BUS_DMA_ALLOCNOW,
2229                                 NULL, NULL,
2230                                 &sc->sc_buf_dtag);
2231         if (error) {
2232                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2233                 return error;
2234         }
2235
2236         ntx = 0;
2237
2238         /*
2239          * Create TX mbuf DMA map
2240          */
2241         for (i = 0; i < BWI_TX_NRING; ++i) {
2242                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2243
2244                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2245                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2246                                                   &tbd->tbd_buf[j].tb_dmap);
2247                         if (error) {
2248                                 device_printf(sc->sc_dev, "can't create "
2249                                               "%dth tbd, %dth DMA map\n", i, j);
2250
2251                                 ntx = i;
2252                                 for (k = 0; k < j; ++k) {
2253                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2254                                                 tbd->tbd_buf[k].tb_dmap);
2255                                 }
2256                                 goto fail;
2257                         }
2258                 }
2259         }
2260         ntx = BWI_TX_NRING;
2261
2262         /*
2263          * Create RX mbuf DMA map and a spare DMA map
2264          */
2265         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2266                                   &rbd->rbd_tmp_dmap);
2267         if (error) {
2268                 device_printf(sc->sc_dev,
2269                               "can't create spare RX buf DMA map\n");
2270                 goto fail;
2271         }
2272
2273         for (j = 0; j < BWI_RX_NDESC; ++j) {
2274                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2275                                           &rbd->rbd_buf[j].rb_dmap);
2276                 if (error) {
2277                         device_printf(sc->sc_dev, "can't create %dth "
2278                                       "RX buf DMA map\n", j);
2279
2280                         for (k = 0; k < j; ++k) {
2281                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2282                                         rbd->rbd_buf[j].rb_dmap);
2283                         }
2284                         bus_dmamap_destroy(sc->sc_buf_dtag,
2285                                            rbd->rbd_tmp_dmap);
2286                         goto fail;
2287                 }
2288         }
2289
2290         return 0;
2291 fail:
2292         bwi_dma_mbuf_destroy(sc, ntx, 0);
2293         return error;
2294 }
2295
2296 static void
2297 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2298 {
2299         int i, j;
2300
2301         if (sc->sc_buf_dtag == NULL)
2302                 return;
2303
2304         for (i = 0; i < ntx; ++i) {
2305                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2306
2307                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2308                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2309
2310                         if (tb->tb_mbuf != NULL) {
2311                                 bus_dmamap_unload(sc->sc_buf_dtag,
2312                                                   tb->tb_dmap);
2313                                 m_freem(tb->tb_mbuf);
2314                         }
2315                         if (tb->tb_ni != NULL)
2316                                 ieee80211_free_node(tb->tb_ni);
2317                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2318                 }
2319         }
2320
2321         if (nrx) {
2322                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2323
2324                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2325                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2326                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2327
2328                         if (rb->rb_mbuf != NULL) {
2329                                 bus_dmamap_unload(sc->sc_buf_dtag,
2330                                                   rb->rb_dmap);
2331                                 m_freem(rb->rb_mbuf);
2332                         }
2333                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2334                 }
2335         }
2336
2337         bus_dma_tag_destroy(sc->sc_buf_dtag);
2338         sc->sc_buf_dtag = NULL;
2339 }
2340
2341 static void
2342 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2343 {
2344         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2345 }
2346
2347 static void
2348 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2349 {
2350         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2351 }
2352
2353 static int
2354 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2355 {
2356         struct bwi_ring_data *rd;
2357         struct bwi_txbuf_data *tbd;
2358         uint32_t val, addr_hi, addr_lo;
2359
2360         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2361         rd = &sc->sc_tx_rdata[ring_idx];
2362         tbd = &sc->sc_tx_bdata[ring_idx];
2363
2364         tbd->tbd_idx = 0;
2365         tbd->tbd_used = 0;
2366
2367         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2368         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2369                         BUS_DMASYNC_PREWRITE);
2370
2371         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2372         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2373
2374         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2375               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2376                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2377         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2378
2379         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2380               BWI_TXRX32_CTRL_ENABLE;
2381         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2382
2383         return 0;
2384 }
2385
2386 static void
2387 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2388                        bus_addr_t paddr, int hdr_size, int ndesc)
2389 {
2390         uint32_t val, addr_hi, addr_lo;
2391
2392         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2393         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2394
2395         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2396               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2397                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2398         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2399
2400         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2401               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2402               BWI_TXRX32_CTRL_ENABLE;
2403         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2404
2405         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2406                     (ndesc - 1) * sizeof(struct bwi_desc32));
2407 }
2408
2409 static int
2410 bwi_init_rx_ring32(struct bwi_softc *sc)
2411 {
2412         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2413         int i, error;
2414
2415         sc->sc_rx_bdata.rbd_idx = 0;
2416
2417         for (i = 0; i < BWI_RX_NDESC; ++i) {
2418                 error = bwi_newbuf(sc, i, 1);
2419                 if (error) {
2420                         device_printf(sc->sc_dev,
2421                                   "can't allocate %dth RX buffer\n", i);
2422                         return error;
2423                 }
2424         }
2425         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2426                         BUS_DMASYNC_PREWRITE);
2427
2428         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2429                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2430         return 0;
2431 }
2432
2433 static int
2434 bwi_init_txstats32(struct bwi_softc *sc)
2435 {
2436         struct bwi_txstats_data *st = sc->sc_txstats;
2437         bus_addr_t stats_paddr;
2438         int i;
2439
2440         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2441         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2442
2443         st->stats_idx = 0;
2444
2445         stats_paddr = st->stats_paddr;
2446         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2447                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2448                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2449                 stats_paddr += sizeof(struct bwi_txstats);
2450         }
2451         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2452                         BUS_DMASYNC_PREWRITE);
2453
2454         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2455                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2456         return 0;
2457 }
2458
2459 static void
2460 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2461                     int buf_len)
2462 {
2463         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2464
2465         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2466         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2467                          paddr, buf_len, 0);
2468 }
2469
2470 static void
2471 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2472                     int buf_idx, bus_addr_t paddr, int buf_len)
2473 {
2474         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
2475         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2476                          paddr, buf_len, 1);
2477 }
2478
2479 static int
2480 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2481 {
2482         /* TODO:64 */
2483         return EOPNOTSUPP;
2484 }
2485
2486 static int
2487 bwi_init_rx_ring64(struct bwi_softc *sc)
2488 {
2489         /* TODO:64 */
2490         return EOPNOTSUPP;
2491 }
2492
2493 static int
2494 bwi_init_txstats64(struct bwi_softc *sc)
2495 {
2496         /* TODO:64 */
2497         return EOPNOTSUPP;
2498 }
2499
2500 static void
2501 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2502                     int buf_len)
2503 {
2504         /* TODO:64 */
2505 }
2506
2507 static void
2508 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2509                     int buf_idx, bus_addr_t paddr, int buf_len)
2510 {
2511         /* TODO:64 */
2512 }
2513
2514 static void
2515 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2516                  bus_size_t mapsz __unused, int error)
2517 {
2518         if (!error) {
2519                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2520                 *((bus_addr_t *)arg) = seg->ds_addr;
2521         }
2522 }
2523
2524 static int
2525 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2526 {
2527         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2528         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2529         struct bwi_rxbuf_hdr *hdr;
2530         bus_dmamap_t map;
2531         bus_addr_t paddr;
2532         struct mbuf *m;
2533         int error;
2534
2535         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2536
2537         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
2538         if (m == NULL) {
2539                 error = ENOBUFS;
2540
2541                 /*
2542                  * If the NIC is up and running, we need to:
2543                  * - Clear RX buffer's header.
2544                  * - Restore RX descriptor settings.
2545                  */
2546                 if (init)
2547                         return error;
2548                 else
2549                         goto back;
2550         }
2551         m->m_len = m->m_pkthdr.len = MCLBYTES;
2552
2553         /*
2554          * Try to load RX buf into temporary DMA map
2555          */
2556         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2557                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
2558         if (error) {
2559                 m_freem(m);
2560
2561                 /*
2562                  * See the comment above
2563                  */
2564                 if (init)
2565                         return error;
2566                 else
2567                         goto back;
2568         }
2569
2570         if (!init)
2571                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2572         rxbuf->rb_mbuf = m;
2573         rxbuf->rb_paddr = paddr;
2574
2575         /*
2576          * Swap RX buf's DMA map with the loaded temporary one
2577          */
2578         map = rxbuf->rb_dmap;
2579         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2580         rbd->rbd_tmp_dmap = map;
2581
2582 back:
2583         /*
2584          * Clear RX buf header
2585          */
2586         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2587         bzero(hdr, sizeof(*hdr));
2588         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2589
2590         /*
2591          * Setup RX buf descriptor
2592          */
2593         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2594                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2595         return error;
2596 }
2597
2598 static void
2599 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2600                     const uint8_t *addr)
2601 {
2602         int i;
2603
2604         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2605                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2606
2607         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2608                 uint16_t addr_val;
2609
2610                 addr_val = (uint16_t)addr[i * 2] |
2611                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2612                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2613         }
2614 }
2615
2616 static int
2617 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2618 {
2619         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2620         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2621         struct ifnet *ifp = sc->sc_ifp;
2622         struct ieee80211com *ic = ifp->if_l2com;
2623         int idx, rx_data = 0;
2624
2625         idx = rbd->rbd_idx;
2626         while (idx != end_idx) {
2627                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2628                 struct bwi_rxbuf_hdr *hdr;
2629                 struct ieee80211_frame_min *wh;
2630                 struct ieee80211_node *ni;
2631                 struct mbuf *m;
2632                 uint32_t plcp;
2633                 uint16_t flags2;
2634                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
2635
2636                 m = rb->rb_mbuf;
2637                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2638                                 BUS_DMASYNC_POSTREAD);
2639
2640                 if (bwi_newbuf(sc, idx, 0)) {
2641                         ifp->if_ierrors++;
2642                         goto next;
2643                 }
2644
2645                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2646                 flags2 = le16toh(hdr->rxh_flags2);
2647
2648                 hdr_extra = 0;
2649                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2650                         hdr_extra = 2;
2651                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2652
2653                 buflen = le16toh(hdr->rxh_buflen);
2654                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2655                         if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
2656                                   __func__, hdr_extra);
2657                         ifp->if_ierrors++;
2658                         m_freem(m);
2659                         goto next;
2660                 }
2661
2662                 bcopy((uint8_t *)(hdr + 1) + hdr_extra, &plcp, sizeof(plcp));
2663                 rssi = bwi_calc_rssi(sc, hdr);
2664                 noise = bwi_calc_noise(sc);
2665
2666                 m->m_pkthdr.rcvif = ifp;
2667                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2668                 m_adj(m, sizeof(*hdr) + wh_ofs);
2669
2670                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2671                         rate = bwi_plcp2rate(plcp, IEEE80211_T_OFDM);
2672                 else
2673                         rate = bwi_plcp2rate(plcp, IEEE80211_T_CCK);
2674
2675                 /* RX radio tap */
2676                 if (ieee80211_radiotap_active(ic))
2677                         bwi_rx_radiotap(sc, m, hdr, &plcp, rate, rssi, noise);
2678
2679                 m_adj(m, -IEEE80211_CRC_LEN);
2680
2681                 BWI_UNLOCK(sc);
2682
2683                 wh = mtod(m, struct ieee80211_frame_min *);
2684                 ni = ieee80211_find_rxnode(ic, wh);
2685                 if (ni != NULL) {
2686                         type = ieee80211_input(ni, m, rssi - noise, noise);
2687                         ieee80211_free_node(ni);
2688                 } else
2689                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
2690                 if (type == IEEE80211_FC0_TYPE_DATA) {
2691                         rx_data = 1;
2692                         sc->sc_rx_rate = rate;
2693                 }
2694
2695                 BWI_LOCK(sc);
2696 next:
2697                 idx = (idx + 1) % BWI_RX_NDESC;
2698
2699                 if (sc->sc_flags & BWI_F_STOP) {
2700                         /*
2701                          * Take the fast lane, don't do
2702                          * any damage to softc
2703                          */
2704                         return -1;
2705                 }
2706         }
2707
2708         rbd->rbd_idx = idx;
2709         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2710                         BUS_DMASYNC_PREWRITE);
2711
2712         return rx_data;
2713 }
2714
2715 static int
2716 bwi_rxeof32(struct bwi_softc *sc)
2717 {
2718         uint32_t val, rx_ctrl;
2719         int end_idx, rx_data;
2720
2721         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2722
2723         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2724         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2725                   sizeof(struct bwi_desc32);
2726
2727         rx_data = bwi_rxeof(sc, end_idx);
2728         if (rx_data >= 0) {
2729                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2730                             end_idx * sizeof(struct bwi_desc32));
2731         }
2732         return rx_data;
2733 }
2734
2735 static int
2736 bwi_rxeof64(struct bwi_softc *sc)
2737 {
2738         /* TODO:64 */
2739         return 0;
2740 }
2741
2742 static void
2743 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2744 {
2745         int i;
2746
2747         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2748
2749 #define NRETRY 10
2750
2751         for (i = 0; i < NRETRY; ++i) {
2752                 uint32_t status;
2753
2754                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2755                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2756                     BWI_RX32_STATUS_STATE_DISABLED)
2757                         break;
2758
2759                 DELAY(1000);
2760         }
2761         if (i == NRETRY)
2762                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
2763
2764 #undef NRETRY
2765
2766         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2767 }
2768
2769 static void
2770 bwi_free_txstats32(struct bwi_softc *sc)
2771 {
2772         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2773 }
2774
2775 static void
2776 bwi_free_rx_ring32(struct bwi_softc *sc)
2777 {
2778         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2779         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2780         int i;
2781
2782         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2783
2784         for (i = 0; i < BWI_RX_NDESC; ++i) {
2785                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2786
2787                 if (rb->rb_mbuf != NULL) {
2788                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2789                         m_freem(rb->rb_mbuf);
2790                         rb->rb_mbuf = NULL;
2791                 }
2792         }
2793 }
2794
2795 static void
2796 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2797 {
2798         struct bwi_ring_data *rd;
2799         struct bwi_txbuf_data *tbd;
2800         struct ifnet *ifp = sc->sc_ifp;
2801         uint32_t state, val;
2802         int i;
2803
2804         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2805         rd = &sc->sc_tx_rdata[ring_idx];
2806         tbd = &sc->sc_tx_bdata[ring_idx];
2807
2808 #define NRETRY 10
2809
2810         for (i = 0; i < NRETRY; ++i) {
2811                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2812                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2813                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2814                     state == BWI_TX32_STATUS_STATE_IDLE ||
2815                     state == BWI_TX32_STATUS_STATE_STOPPED)
2816                         break;
2817
2818                 DELAY(1000);
2819         }
2820         if (i == NRETRY) {
2821                 if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
2822                           __func__, ring_idx);
2823         }
2824
2825         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2826         for (i = 0; i < NRETRY; ++i) {
2827                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2828                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2829                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2830                         break;
2831
2832                 DELAY(1000);
2833         }
2834         if (i == NRETRY)
2835                 if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
2836                      __func__, ring_idx);
2837
2838 #undef NRETRY
2839
2840         DELAY(1000);
2841
2842         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2843
2844         for (i = 0; i < BWI_TX_NDESC; ++i) {
2845                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2846
2847                 if (tb->tb_mbuf != NULL) {
2848                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2849                         m_freem(tb->tb_mbuf);
2850                         tb->tb_mbuf = NULL;
2851                 }
2852                 if (tb->tb_ni != NULL) {
2853                         ieee80211_free_node(tb->tb_ni);
2854                         tb->tb_ni = NULL;
2855                 }
2856         }
2857 }
2858
2859 static void
2860 bwi_free_txstats64(struct bwi_softc *sc)
2861 {
2862         /* TODO:64 */
2863 }
2864
2865 static void
2866 bwi_free_rx_ring64(struct bwi_softc *sc)
2867 {
2868         /* TODO:64 */
2869 }
2870
2871 static void
2872 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2873 {
2874         /* TODO:64 */
2875 }
2876
2877 /* XXX does not belong here */
2878 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
2879 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
2880
2881 static __inline void
2882 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
2883 {
2884         uint32_t plcp;
2885
2886         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
2887                     IEEE80211_OFDM_PLCP_RATE_MASK) |
2888                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
2889         *plcp0 = htole32(plcp);
2890 }
2891
2892 static __inline void
2893 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
2894                    uint8_t rate)
2895 {
2896         int len, service, pkt_bitlen;
2897
2898         pkt_bitlen = pkt_len * NBBY;
2899         len = howmany(pkt_bitlen * 2, rate);
2900
2901         service = IEEE80211_PLCP_SERVICE_LOCKED;
2902         if (rate == (11 * 2)) {
2903                 int pkt_bitlen1;
2904
2905                 /*
2906                  * PLCP service field needs to be adjusted,
2907                  * if TX rate is 11Mbytes/s
2908                  */
2909                 pkt_bitlen1 = len * 11;
2910                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
2911                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
2912         }
2913
2914         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
2915         plcp->i_service = service;
2916         plcp->i_length = htole16(len);
2917         /* NOTE: do NOT touch i_crc */
2918 }
2919
2920 static __inline void
2921 bwi_plcp_header(const struct ieee80211_rate_table *rt,
2922         void *plcp, int pkt_len, uint8_t rate)
2923 {
2924         enum ieee80211_phytype modtype;
2925
2926         /*
2927          * Assume caller has zeroed 'plcp'
2928          */
2929         modtype = ieee80211_rate2phytype(rt, rate);
2930         if (modtype == IEEE80211_T_OFDM)
2931                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
2932         else if (modtype == IEEE80211_T_DS)
2933                 bwi_ds_plcp_header(plcp, pkt_len, rate);
2934         else
2935                 panic("unsupport modulation type %u\n", modtype);
2936 }
2937
2938 static int
2939 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2940           struct ieee80211_node *ni)
2941 {
2942         struct ieee80211vap *vap = ni->ni_vap;
2943         struct ifnet *ifp = sc->sc_ifp;
2944         struct ieee80211com *ic = ifp->if_l2com;
2945         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2946         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2947         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
2948         struct bwi_mac *mac;
2949         struct bwi_txbuf_hdr *hdr;
2950         struct ieee80211_frame *wh;
2951         const struct ieee80211_txparam *tp;
2952         uint8_t rate, rate_fb;
2953         uint32_t mac_ctrl;
2954         uint16_t phy_ctrl;
2955         bus_addr_t paddr;
2956         int type, ismcast, pkt_len, error, rix;
2957 #if 0
2958         const uint8_t *p;
2959         int i;
2960 #endif
2961
2962         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
2963             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
2964         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2965
2966         wh = mtod(m, struct ieee80211_frame *);
2967         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2968         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2969
2970         /* Get 802.11 frame len before prepending TX header */
2971         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
2972
2973         /*
2974          * Find TX rate
2975          */
2976         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
2977         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
2978                 rate = rate_fb = tp->mgmtrate;
2979         } else if (ismcast) {
2980                 rate = rate_fb = tp->mcastrate;
2981         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
2982                 rate = rate_fb = tp->ucastrate;
2983         } else {
2984                 rix = ieee80211_ratectl_rate(ni, NULL, pkt_len);
2985                 rate = ni->ni_txrate;
2986
2987                 if (rix > 0) {
2988                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
2989                                   IEEE80211_RATE_VAL;
2990                 } else {
2991                         rate_fb = rate;
2992                 }
2993         }
2994         tb->tb_rate[0] = rate;
2995         tb->tb_rate[1] = rate_fb;
2996         sc->sc_tx_rate = rate;
2997
2998         /*
2999          * TX radio tap
3000          */
3001         if (ieee80211_radiotap_active_vap(vap)) {
3002                 sc->sc_tx_th.wt_flags = 0;
3003                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3004                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3005                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
3006                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3007                     rate != (1 * 2)) {
3008                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3009                 }
3010                 sc->sc_tx_th.wt_rate = rate;
3011
3012                 ieee80211_radiotap_tx(vap, m);
3013         }
3014
3015         /*
3016          * Setup the embedded TX header
3017          */
3018         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
3019         if (m == NULL) {
3020                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3021                 return ENOBUFS;
3022         }
3023         hdr = mtod(m, struct bwi_txbuf_hdr *);
3024
3025         bzero(hdr, sizeof(*hdr));
3026
3027         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3028         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3029
3030         if (!ismcast) {
3031                 uint16_t dur;
3032
3033                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
3034                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
3035
3036                 hdr->txh_fb_duration = htole16(dur);
3037         }
3038
3039         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3040                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3041
3042         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3043         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3044
3045         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3046                              BWI_TXH_PHY_C_ANTMODE_MASK);
3047         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
3048                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3049         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3050                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3051
3052         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3053         if (!ismcast)
3054                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3055         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
3056                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3057
3058         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3059         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3060
3061         /* Catch any further usage */
3062         hdr = NULL;
3063         wh = NULL;
3064
3065         /* DMA load */
3066         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3067                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3068         if (error && error != EFBIG) {
3069                 if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3070                     __func__, error);
3071                 goto back;
3072         }
3073
3074         if (error) {    /* error == EFBIG */
3075                 struct mbuf *m_new;
3076
3077                 m_new = m_defrag(m, M_NOWAIT);
3078                 if (m_new == NULL) {
3079                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3080                             __func__);
3081                         error = ENOBUFS;
3082                         goto back;
3083                 } else {
3084                         m = m_new;
3085                 }
3086
3087                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3088                                              bwi_dma_buf_addr, &paddr,
3089                                              BUS_DMA_NOWAIT);
3090                 if (error) {
3091                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3092                             __func__, error);
3093                         goto back;
3094                 }
3095         }
3096         error = 0;
3097
3098         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3099
3100         tb->tb_mbuf = m;
3101         tb->tb_ni = ni;
3102
3103 #if 0
3104         p = mtod(m, const uint8_t *);
3105         for (i = 0; i < m->m_pkthdr.len; ++i) {
3106                 if (i != 0 && i % 8 == 0)
3107                         printf("\n");
3108                 printf("%02x ", p[i]);
3109         }
3110         printf("\n");
3111 #endif
3112         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3113                 idx, pkt_len, m->m_pkthdr.len);
3114
3115         /* Setup TX descriptor */
3116         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3117         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3118                         BUS_DMASYNC_PREWRITE);
3119
3120         /* Kick start */
3121         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3122
3123 back:
3124         if (error)
3125                 m_freem(m);
3126         return error;
3127 }
3128
3129 static int
3130 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
3131           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
3132 {
3133         struct ifnet *ifp = sc->sc_ifp;
3134         struct ieee80211vap *vap = ni->ni_vap;
3135         struct ieee80211com *ic = ni->ni_ic;
3136         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3137         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3138         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3139         struct bwi_mac *mac;
3140         struct bwi_txbuf_hdr *hdr;
3141         struct ieee80211_frame *wh;
3142         uint8_t rate, rate_fb;
3143         uint32_t mac_ctrl;
3144         uint16_t phy_ctrl;
3145         bus_addr_t paddr;
3146         int ismcast, pkt_len, error;
3147
3148         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3149             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3150         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3151
3152         wh = mtod(m, struct ieee80211_frame *);
3153         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
3154
3155         /* Get 802.11 frame len before prepending TX header */
3156         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3157
3158         /*
3159          * Find TX rate
3160          */
3161         rate = params->ibp_rate0;
3162         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
3163                 /* XXX fall back to mcast/mgmt rate? */
3164                 m_freem(m);
3165                 return EINVAL;
3166         }
3167         if (params->ibp_try1 != 0) {
3168                 rate_fb = params->ibp_rate1;
3169                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
3170                         /* XXX fall back to rate0? */
3171                         m_freem(m);
3172                         return EINVAL;
3173                 }
3174         } else
3175                 rate_fb = rate;
3176         tb->tb_rate[0] = rate;
3177         tb->tb_rate[1] = rate_fb;
3178         sc->sc_tx_rate = rate;
3179
3180         /*
3181          * TX radio tap
3182          */
3183         if (ieee80211_radiotap_active_vap(vap)) {
3184                 sc->sc_tx_th.wt_flags = 0;
3185                 /* XXX IEEE80211_BPF_CRYPTO */
3186                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3187                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3188                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3189                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3190                 sc->sc_tx_th.wt_rate = rate;
3191
3192                 ieee80211_radiotap_tx(vap, m);
3193         }
3194
3195         /*
3196          * Setup the embedded TX header
3197          */
3198         M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
3199         if (m == NULL) {
3200                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3201                 return ENOBUFS;
3202         }
3203         hdr = mtod(m, struct bwi_txbuf_hdr *);
3204
3205         bzero(hdr, sizeof(*hdr));
3206
3207         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3208         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3209
3210         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3211         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
3212                 uint16_t dur;
3213
3214                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
3215
3216                 hdr->txh_fb_duration = htole16(dur);
3217                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3218         }
3219
3220         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3221                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3222
3223         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3224         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3225
3226         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3227                              BWI_TXH_PHY_C_ANTMODE_MASK);
3228         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
3229                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3230                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3231         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3232                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3233
3234         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3235         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3236
3237         /* Catch any further usage */
3238         hdr = NULL;
3239         wh = NULL;
3240
3241         /* DMA load */
3242         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3243                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3244         if (error != 0) {
3245                 struct mbuf *m_new;
3246
3247                 if (error != EFBIG) {
3248                         if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3249                             __func__, error);
3250                         goto back;
3251                 }
3252                 m_new = m_defrag(m, M_NOWAIT);
3253                 if (m_new == NULL) {
3254                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3255                             __func__);
3256                         error = ENOBUFS;
3257                         goto back;
3258                 }
3259                 m = m_new;
3260                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3261                                              bwi_dma_buf_addr, &paddr,
3262                                              BUS_DMA_NOWAIT);
3263                 if (error) {
3264                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3265                             __func__, error);
3266                         goto back;
3267                 }
3268         }
3269
3270         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3271
3272         tb->tb_mbuf = m;
3273         tb->tb_ni = ni;
3274
3275         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3276                 idx, pkt_len, m->m_pkthdr.len);
3277
3278         /* Setup TX descriptor */
3279         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3280         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3281                         BUS_DMASYNC_PREWRITE);
3282
3283         /* Kick start */
3284         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3285 back:
3286         if (error)
3287                 m_freem(m);
3288         return error;
3289 }
3290
3291 static void
3292 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3293 {
3294         idx = (idx + 1) % BWI_TX_NDESC;
3295         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3296                     idx * sizeof(struct bwi_desc32));
3297 }
3298
3299 static void
3300 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3301 {
3302         /* TODO:64 */
3303 }
3304
3305 static void
3306 bwi_txeof_status32(struct bwi_softc *sc)
3307 {
3308         struct ifnet *ifp = sc->sc_ifp;
3309         uint32_t val, ctrl_base;
3310         int end_idx;
3311
3312         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3313
3314         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3315         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3316                   sizeof(struct bwi_desc32);
3317
3318         bwi_txeof_status(sc, end_idx);
3319
3320         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3321                     end_idx * sizeof(struct bwi_desc32));
3322
3323         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3324                 ifp->if_start(ifp);
3325 }
3326
3327 static void
3328 bwi_txeof_status64(struct bwi_softc *sc)
3329 {
3330         /* TODO:64 */
3331 }
3332
3333 static void
3334 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3335 {
3336         struct ifnet *ifp = sc->sc_ifp;
3337         struct bwi_txbuf_data *tbd;
3338         struct bwi_txbuf *tb;
3339         int ring_idx, buf_idx;
3340         struct ieee80211_node *ni;
3341         struct ieee80211vap *vap;
3342
3343         if (tx_id == 0) {
3344                 if_printf(ifp, "%s: zero tx id\n", __func__);
3345                 return;
3346         }
3347
3348         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3349         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3350
3351         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
3352         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
3353
3354         tbd = &sc->sc_tx_bdata[ring_idx];
3355         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
3356         tbd->tbd_used--;
3357
3358         tb = &tbd->tbd_buf[buf_idx];
3359         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3360                 "acked %d, data_txcnt %d, ni %p\n",
3361                 buf_idx, acked, data_txcnt, tb->tb_ni);
3362
3363         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3364
3365         ni = tb->tb_ni;
3366         if (tb->tb_ni != NULL) {
3367                 const struct bwi_txbuf_hdr *hdr =
3368                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
3369                 vap = ni->ni_vap;
3370
3371                 /* NB: update rate control only for unicast frames */
3372                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
3373                         /*
3374                          * Feed back 'acked and data_txcnt'.  Note that the
3375                          * generic AMRR code only understands one tx rate
3376                          * and the estimator doesn't handle real retry counts
3377                          * well so to avoid over-aggressive downshifting we
3378                          * treat any number of retries as "1".
3379                          */
3380                         ieee80211_ratectl_tx_complete(vap, ni,
3381                             (data_txcnt > 1) ? IEEE80211_RATECTL_TX_SUCCESS :
3382                                 IEEE80211_RATECTL_TX_FAILURE, &acked, NULL);
3383                 }
3384
3385                 /*
3386                  * Do any tx complete callback.  Note this must
3387                  * be done before releasing the node reference.
3388                  */
3389                 if (tb->tb_mbuf->m_flags & M_TXCB)
3390                         ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
3391
3392                 ieee80211_free_node(tb->tb_ni);
3393                 tb->tb_ni = NULL;
3394         }
3395         m_freem(tb->tb_mbuf);
3396         tb->tb_mbuf = NULL;
3397
3398         if (tbd->tbd_used == 0)
3399                 sc->sc_tx_timer = 0;
3400
3401         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3402 }
3403
3404 static void
3405 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3406 {
3407         struct bwi_txstats_data *st = sc->sc_txstats;
3408         int idx;
3409
3410         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3411
3412         idx = st->stats_idx;
3413         while (idx != end_idx) {
3414                 const struct bwi_txstats *stats = &st->stats[idx];
3415
3416                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3417                         int data_txcnt;
3418
3419                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3420                                                 BWI_TXS_TXCNT_DATA);
3421                         _bwi_txeof(sc, le16toh(stats->txs_id),
3422                                    stats->txs_flags & BWI_TXS_F_ACKED,
3423                                    data_txcnt);
3424                 }
3425                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3426         }
3427         st->stats_idx = idx;
3428 }
3429
3430 static void
3431 bwi_txeof(struct bwi_softc *sc)
3432 {
3433         struct ifnet *ifp = sc->sc_ifp;
3434
3435         for (;;) {
3436                 uint32_t tx_status0, tx_status1;
3437                 uint16_t tx_id;
3438                 int data_txcnt;
3439
3440                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3441                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3442                         break;
3443                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3444
3445                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3446                 data_txcnt = __SHIFTOUT(tx_status0,
3447                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3448
3449                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3450                         continue;
3451
3452                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
3453                     data_txcnt);
3454         }
3455
3456         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3457                 ifp->if_start(ifp);
3458 }
3459
3460 static int
3461 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3462 {
3463         bwi_power_on(sc, 1);
3464         return bwi_set_clock_mode(sc, clk_mode);
3465 }
3466
3467 static void
3468 bwi_bbp_power_off(struct bwi_softc *sc)
3469 {
3470         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3471         bwi_power_off(sc, 1);
3472 }
3473
3474 static int
3475 bwi_get_pwron_delay(struct bwi_softc *sc)
3476 {
3477         struct bwi_regwin *com, *old;
3478         struct bwi_clock_freq freq;
3479         uint32_t val;
3480         int error;
3481
3482         com = &sc->sc_com_regwin;
3483         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
3484
3485         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3486                 return 0;
3487
3488         error = bwi_regwin_switch(sc, com, &old);
3489         if (error)
3490                 return error;
3491
3492         bwi_get_clock_freq(sc, &freq);
3493
3494         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3495         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3496         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3497
3498         return bwi_regwin_switch(sc, old, NULL);
3499 }
3500
3501 static int
3502 bwi_bus_attach(struct bwi_softc *sc)
3503 {
3504         struct bwi_regwin *bus, *old;
3505         int error;
3506
3507         bus = &sc->sc_bus_regwin;
3508
3509         error = bwi_regwin_switch(sc, bus, &old);
3510         if (error)
3511                 return error;
3512
3513         if (!bwi_regwin_is_enabled(sc, bus))
3514                 bwi_regwin_enable(sc, bus, 0);
3515
3516         /* Disable interripts */
3517         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3518
3519         return bwi_regwin_switch(sc, old, NULL);
3520 }
3521
3522 static const char *
3523 bwi_regwin_name(const struct bwi_regwin *rw)
3524 {
3525         switch (rw->rw_type) {
3526         case BWI_REGWIN_T_COM:
3527                 return "COM";
3528         case BWI_REGWIN_T_BUSPCI:
3529                 return "PCI";
3530         case BWI_REGWIN_T_MAC:
3531                 return "MAC";
3532         case BWI_REGWIN_T_BUSPCIE:
3533                 return "PCIE";
3534         }
3535         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3536         return NULL;
3537 }
3538
3539 static uint32_t
3540 bwi_regwin_disable_bits(struct bwi_softc *sc)
3541 {
3542         uint32_t busrev;
3543
3544         /* XXX cache this */
3545         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3546         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3547                 "bus rev %u\n", busrev);
3548
3549         if (busrev == BWI_BUSREV_0)
3550                 return BWI_STATE_LO_DISABLE1;
3551         else if (busrev == BWI_BUSREV_1)
3552                 return BWI_STATE_LO_DISABLE2;
3553         else
3554                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3555 }
3556
3557 int
3558 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3559 {
3560         uint32_t val, disable_bits;
3561
3562         disable_bits = bwi_regwin_disable_bits(sc);
3563         val = CSR_READ_4(sc, BWI_STATE_LO);
3564
3565         if ((val & (BWI_STATE_LO_CLOCK |
3566                     BWI_STATE_LO_RESET |
3567                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3568                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3569                         bwi_regwin_name(rw));
3570                 return 1;
3571         } else {
3572                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3573                         bwi_regwin_name(rw));
3574                 return 0;
3575         }
3576 }
3577
3578 void
3579 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3580 {
3581         uint32_t state_lo, disable_bits;
3582         int i;
3583
3584         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3585
3586         /*
3587          * If current regwin is in 'reset' state, it was already disabled.
3588          */
3589         if (state_lo & BWI_STATE_LO_RESET) {
3590                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3591                         "%s was already disabled\n", bwi_regwin_name(rw));
3592                 return;
3593         }
3594
3595         disable_bits = bwi_regwin_disable_bits(sc);
3596
3597         /*
3598          * Disable normal clock
3599          */
3600         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3601         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3602
3603         /*
3604          * Wait until normal clock is disabled
3605          */
3606 #define NRETRY  1000
3607         for (i = 0; i < NRETRY; ++i) {
3608                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3609                 if (state_lo & disable_bits)
3610                         break;
3611                 DELAY(10);
3612         }
3613         if (i == NRETRY) {
3614                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3615                               bwi_regwin_name(rw));
3616         }
3617
3618         for (i = 0; i < NRETRY; ++i) {
3619                 uint32_t state_hi;
3620
3621                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3622                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3623                         break;
3624                 DELAY(10);
3625         }
3626         if (i == NRETRY) {
3627                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3628                               bwi_regwin_name(rw));
3629         }
3630 #undef NRETRY
3631
3632         /*
3633          * Reset and disable regwin with gated clock
3634          */
3635         state_lo = BWI_STATE_LO_RESET | disable_bits |
3636                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3637                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3638         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3639
3640         /* Flush pending bus write */
3641         CSR_READ_4(sc, BWI_STATE_LO);
3642         DELAY(1);
3643
3644         /* Reset and disable regwin */
3645         state_lo = BWI_STATE_LO_RESET | disable_bits |
3646                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3647         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3648
3649         /* Flush pending bus write */
3650         CSR_READ_4(sc, BWI_STATE_LO);
3651         DELAY(1);
3652 }
3653
3654 void
3655 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3656 {
3657         uint32_t state_lo, state_hi, imstate;
3658
3659         bwi_regwin_disable(sc, rw, flags);
3660
3661         /* Reset regwin with gated clock */
3662         state_lo = BWI_STATE_LO_RESET |
3663                    BWI_STATE_LO_CLOCK |
3664                    BWI_STATE_LO_GATED_CLOCK |
3665                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3666         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3667
3668         /* Flush pending bus write */
3669         CSR_READ_4(sc, BWI_STATE_LO);
3670         DELAY(1);
3671
3672         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3673         if (state_hi & BWI_STATE_HI_SERROR)
3674                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3675
3676         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3677         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3678                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3679                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3680         }
3681
3682         /* Enable regwin with gated clock */
3683         state_lo = BWI_STATE_LO_CLOCK |
3684                    BWI_STATE_LO_GATED_CLOCK |
3685                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3686         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3687
3688         /* Flush pending bus write */
3689         CSR_READ_4(sc, BWI_STATE_LO);
3690         DELAY(1);
3691
3692         /* Enable regwin with normal clock */
3693         state_lo = BWI_STATE_LO_CLOCK |
3694                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3695         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3696
3697         /* Flush pending bus write */
3698         CSR_READ_4(sc, BWI_STATE_LO);
3699         DELAY(1);
3700 }
3701
3702 static void
3703 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3704 {
3705         struct ifnet *ifp = sc->sc_ifp;
3706         struct bwi_mac *mac;
3707         struct bwi_myaddr_bssid buf;
3708         const uint8_t *p;
3709         uint32_t val;
3710         int n, i;
3711
3712         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3713             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3714         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3715
3716         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3717
3718         bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
3719         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3720
3721         n = sizeof(buf) / sizeof(val);
3722         p = (const uint8_t *)&buf;
3723         for (i = 0; i < n; ++i) {
3724                 int j;
3725
3726                 val = 0;
3727                 for (j = 0; j < sizeof(val); ++j)
3728                         val |= ((uint32_t)(*p++)) << (j * 8);
3729
3730                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3731         }
3732 }
3733
3734 static void
3735 bwi_updateslot(struct ifnet *ifp)
3736 {
3737         struct bwi_softc *sc = ifp->if_softc;
3738         struct ieee80211com *ic = ifp->if_l2com;
3739         struct bwi_mac *mac;
3740
3741         BWI_LOCK(sc);
3742         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
3743                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3744
3745                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3746                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3747                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3748
3749                 bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3750         }
3751         BWI_UNLOCK(sc);
3752 }
3753
3754 static void
3755 bwi_calibrate(void *xsc)
3756 {
3757         struct bwi_softc *sc = xsc;
3758 #ifdef INVARIANTS
3759         struct ifnet *ifp = sc->sc_ifp;
3760         struct ieee80211com *ic = ifp->if_l2com;
3761 #endif
3762         struct bwi_mac *mac;
3763
3764         BWI_ASSERT_LOCKED(sc);
3765
3766         KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
3767             ("opmode %d", ic->ic_opmode));
3768
3769         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3770             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3771         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3772
3773         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3774         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3775
3776         /* XXX 15 seconds */
3777         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3778 }
3779
3780 static int
3781 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3782 {
3783         struct bwi_mac *mac;
3784
3785         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3786             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3787         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3788
3789         return bwi_rf_calc_rssi(mac, hdr);
3790 }
3791
3792 static int
3793 bwi_calc_noise(struct bwi_softc *sc)
3794 {
3795         struct bwi_mac *mac;
3796
3797         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3798             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3799         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3800
3801         return bwi_rf_calc_noise(mac);
3802 }
3803
3804 static __inline uint8_t
3805 bwi_plcp2rate(const uint32_t plcp0, enum ieee80211_phytype type)
3806 {
3807         uint32_t plcp = le32toh(plcp0) & IEEE80211_OFDM_PLCP_RATE_MASK;
3808         return (ieee80211_plcp2rate(plcp, type));
3809 }
3810
3811 static void
3812 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3813     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
3814 {
3815         const struct ieee80211_frame_min *wh;
3816
3817         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3818         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3819                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3820
3821         wh = mtod(m, const struct ieee80211_frame_min *);
3822         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3823                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3824
3825         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3826         sc->sc_rx_th.wr_rate = rate;
3827         sc->sc_rx_th.wr_antsignal = rssi;
3828         sc->sc_rx_th.wr_antnoise = noise;
3829 }
3830
3831 static void
3832 bwi_led_attach(struct bwi_softc *sc)
3833 {
3834         const uint8_t *led_act = NULL;
3835         uint16_t gpio, val[BWI_LED_MAX];
3836         int i;
3837
3838 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3839
3840         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3841                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3842                         led_act = bwi_vendor_led_act[i].led_act;
3843                         break;
3844                 }
3845         }
3846         if (led_act == NULL)
3847                 led_act = bwi_default_led_act;
3848
3849 #undef N
3850
3851         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3852         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3853         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3854
3855         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3856         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3857         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3858
3859         for (i = 0; i < BWI_LED_MAX; ++i) {
3860                 struct bwi_led *led = &sc->sc_leds[i];
3861
3862                 if (val[i] == 0xff) {
3863                         led->l_act = led_act[i];
3864                 } else {
3865                         if (val[i] & BWI_LED_ACT_LOW)
3866                                 led->l_flags |= BWI_LED_F_ACTLOW;
3867                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3868                 }
3869                 led->l_mask = (1 << i);
3870
3871                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3872                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3873                     led->l_act == BWI_LED_ACT_BLINK) {
3874                         led->l_flags |= BWI_LED_F_BLINK;
3875                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3876                                 led->l_flags |= BWI_LED_F_POLLABLE;
3877                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3878                                 led->l_flags |= BWI_LED_F_SLOW;
3879
3880                         if (sc->sc_blink_led == NULL) {
3881                                 sc->sc_blink_led = led;
3882                                 if (led->l_flags & BWI_LED_F_SLOW)
3883                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3884                         }
3885                 }
3886
3887                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3888                         "%dth led, act %d, lowact %d\n", i,
3889                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3890         }
3891         callout_init_mtx(&sc->sc_led_blink_ch, &sc->sc_mtx, 0);
3892 }
3893
3894 static __inline uint16_t
3895 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3896 {
3897         if (led->l_flags & BWI_LED_F_ACTLOW)
3898                 on = !on;
3899         if (on)
3900                 val |= led->l_mask;
3901         else
3902                 val &= ~led->l_mask;
3903         return val;
3904 }
3905
3906 static void
3907 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3908 {
3909         struct ifnet *ifp = sc->sc_ifp;
3910         struct ieee80211com *ic = ifp->if_l2com;
3911         uint16_t val;
3912         int i;
3913
3914         if (nstate == IEEE80211_S_INIT) {
3915                 callout_stop(&sc->sc_led_blink_ch);
3916                 sc->sc_led_blinking = 0;
3917         }
3918
3919         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
3920                 return;
3921
3922         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3923         for (i = 0; i < BWI_LED_MAX; ++i) {
3924                 struct bwi_led *led = &sc->sc_leds[i];
3925                 int on;
3926
3927                 if (led->l_act == BWI_LED_ACT_UNKN ||
3928                     led->l_act == BWI_LED_ACT_NULL)
3929                         continue;
3930
3931                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3932                     nstate != IEEE80211_S_INIT)
3933                         continue;
3934
3935                 switch (led->l_act) {
3936                 case BWI_LED_ACT_ON:    /* Always on */
3937                         on = 1;
3938                         break;
3939                 case BWI_LED_ACT_OFF:   /* Always off */
3940                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
3941                         on = 0;
3942                         break;
3943                 default:
3944                         on = 1;
3945                         switch (nstate) {
3946                         case IEEE80211_S_INIT:
3947                                 on = 0;
3948                                 break;
3949                         case IEEE80211_S_RUN:
3950                                 if (led->l_act == BWI_LED_ACT_11G &&
3951                                     ic->ic_curmode != IEEE80211_MODE_11G)
3952                                         on = 0;
3953                                 break;
3954                         default:
3955                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3956                                         on = 0;
3957                                 break;
3958                         }
3959                         break;
3960                 }
3961
3962                 val = bwi_led_onoff(led, val, on);
3963         }
3964         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3965 }
3966 static void
3967 bwi_led_event(struct bwi_softc *sc, int event)
3968 {
3969         struct bwi_led *led = sc->sc_blink_led;
3970         int rate;
3971
3972         if (event == BWI_LED_EVENT_POLL) {
3973                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3974                         return;
3975                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3976                         return;
3977         }
3978
3979         sc->sc_led_ticks = ticks;
3980         if (sc->sc_led_blinking)
3981                 return;
3982
3983         switch (event) {
3984         case BWI_LED_EVENT_RX:
3985                 rate = sc->sc_rx_rate;
3986                 break;
3987         case BWI_LED_EVENT_TX:
3988                 rate = sc->sc_tx_rate;
3989                 break;
3990         case BWI_LED_EVENT_POLL:
3991                 rate = 0;
3992                 break;
3993         default:
3994                 panic("unknown LED event %d\n", event);
3995                 break;
3996         }
3997         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3998             bwi_led_duration[rate].off_dur);
3999 }
4000
4001 static void
4002 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
4003 {
4004         struct bwi_led *led = sc->sc_blink_led;
4005         uint16_t val;
4006
4007         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4008         val = bwi_led_onoff(led, val, 1);
4009         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4010
4011         if (led->l_flags & BWI_LED_F_SLOW) {
4012                 BWI_LED_SLOWDOWN(on_dur);
4013                 BWI_LED_SLOWDOWN(off_dur);
4014         }
4015
4016         sc->sc_led_blinking = 1;
4017         sc->sc_led_blink_offdur = off_dur;
4018
4019         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
4020 }
4021
4022 static void
4023 bwi_led_blink_next(void *xsc)
4024 {
4025         struct bwi_softc *sc = xsc;
4026         uint16_t val;
4027
4028         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4029         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
4030         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4031
4032         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
4033             bwi_led_blink_end, sc);
4034 }
4035
4036 static void
4037 bwi_led_blink_end(void *xsc)
4038 {
4039         struct bwi_softc *sc = xsc;
4040         sc->sc_led_blinking = 0;
4041 }
4042
4043 static void
4044 bwi_restart(void *xsc, int pending)
4045 {
4046         struct bwi_softc *sc = xsc;
4047         struct ifnet *ifp = sc->sc_ifp;
4048
4049         if_printf(ifp, "%s begin, help!\n", __func__);
4050         BWI_LOCK(sc);
4051         bwi_init_statechg(xsc, 0);
4052 #if 0
4053         bwi_start_locked(ifp);
4054 #endif
4055         BWI_UNLOCK(sc);
4056 }