sys/dev/bwi/if_bwi.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.19 2008/02/15 11:15:38 sephe Exp $
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __FBSDID("$FreeBSD$");
  39
  40 #include "opt_inet.h"
  41 #include "opt_bwi.h"
  42
  43 #include <sys/param.h>
  44 #include <sys/endian.h>
  45 #include <sys/kernel.h>
  46 #include <sys/bus.h>
  47 #include <sys/malloc.h>
  48 #include <sys/proc.h>
  49 #include <sys/rman.h>
  50 #include <sys/socket.h>
  51 #include <sys/sockio.h>
  52 #include <sys/sysctl.h>
  53 #include <sys/systm.h>
  54 #include <sys/taskqueue.h>
  55
  56 #include <net/if.h>
  57 #include <net/if_dl.h>
  58 #include <net/if_media.h>
  59 #include <net/if_types.h>
  60 #include <net/if_arp.h>
  61 #include <net/ethernet.h>
  62 #include <net/if_llc.h>
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_radiotap.h>
  66 #include <net80211/ieee80211_regdomain.h>
  67 #include <net80211/ieee80211_amrr.h>
  68 #include <net80211/ieee80211_phy.h>
  69
  70 #include <net/bpf.h>
  71
  72 #ifdef INET
  73 #include <netinet/in.h>
  74 #include <netinet/if_ether.h>
  75 #endif
  76
  77 #include <machine/bus.h>
  78
  79 #include <dev/pci/pcivar.h>
  80 #include <dev/pci/pcireg.h>
  81
  82 #include <dev/bwi/bitops.h>
  83 #include <dev/bwi/if_bwireg.h>
  84 #include <dev/bwi/if_bwivar.h>
  85 #include <dev/bwi/bwimac.h>
  86 #include <dev/bwi/bwirf.h>
  87
  88 struct bwi_clock_freq {
  89         u_int           clkfreq_min;
  90         u_int           clkfreq_max;
  91 };
  92
  93 struct bwi_myaddr_bssid {
  94         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  95         uint8_t         bssid[IEEE80211_ADDR_LEN];
  96 } __packed;
  97
  98 static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
  99                    const char [IFNAMSIZ], int, int, int,
 100                    const uint8_t [IEEE80211_ADDR_LEN],
 101                    const uint8_t [IEEE80211_ADDR_LEN]);
 102 static void     bwi_vap_delete(struct ieee80211vap *);
 103 static void     bwi_init(void *);
 104 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t);
 105 static void     bwi_start(struct ifnet *);
 106 static void     bwi_start_locked(struct ifnet *);
 107 static int      bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 108                         const struct ieee80211_bpf_params *);
 109 static void     bwi_watchdog(struct ifnet *);
 110 static void     bwi_scan_start(struct ieee80211com *);
 111 static void     bwi_set_channel(struct ieee80211com *);
 112 static void     bwi_scan_end(struct ieee80211com *);
 113 static int      bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 114 static void     bwi_updateslot(struct ifnet *);
 115 static struct ieee80211_node *bwi_node_alloc(struct ieee80211vap *,
 116                     const uint8_t [IEEE80211_ADDR_LEN]);
 117 static void     bwi_newassoc(struct ieee80211_node *, int);
 118 static int      bwi_media_change(struct ifnet *);
 119
 120 static void     bwi_calibrate(void *);
 121
 122 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 123 static int      bwi_calc_noise(struct bwi_softc *);
 124 static __inline uint8_t bwi_ofdm_plcp2rate(const uint32_t *);
 125 static __inline uint8_t bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *);
 126 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 127                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
 128
 129 static void     bwi_restart(void *, int);
 130 static void     bwi_init_statechg(struct bwi_softc *, int);
 131 static void     bwi_stop(struct bwi_softc *, int);
 132 static void     bwi_stop_locked(struct bwi_softc *, int);
 133 static int      bwi_newbuf(struct bwi_softc *, int, int);
 134 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 135                           struct ieee80211_node *);
 136 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
 137                           struct ieee80211_node *,
 138                           const struct ieee80211_bpf_params *);
 139
 140 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 141                                        bus_addr_t, int, int);
 142 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 143
 144 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 145 static int      bwi_init_rx_ring32(struct bwi_softc *);
 146 static int      bwi_init_txstats32(struct bwi_softc *);
 147 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 148 static void     bwi_free_rx_ring32(struct bwi_softc *);
 149 static void     bwi_free_txstats32(struct bwi_softc *);
 150 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 151 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 152                                     int, bus_addr_t, int);
 153 static int      bwi_rxeof32(struct bwi_softc *);
 154 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 155 static void     bwi_txeof_status32(struct bwi_softc *);
 156
 157 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 158 static int      bwi_init_rx_ring64(struct bwi_softc *);
 159 static int      bwi_init_txstats64(struct bwi_softc *);
 160 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 161 static void     bwi_free_rx_ring64(struct bwi_softc *);
 162 static void     bwi_free_txstats64(struct bwi_softc *);
 163 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 164 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 165                                     int, bus_addr_t, int);
 166 static int      bwi_rxeof64(struct bwi_softc *);
 167 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 168 static void     bwi_txeof_status64(struct bwi_softc *);
 169
 170 static int      bwi_rxeof(struct bwi_softc *, int);
 171 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 172 static void     bwi_txeof(struct bwi_softc *);
 173 static void     bwi_txeof_status(struct bwi_softc *, int);
 174 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 175 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 176
 177 static int      bwi_dma_alloc(struct bwi_softc *);
 178 static void     bwi_dma_free(struct bwi_softc *);
 179 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 180                                    struct bwi_ring_data *, bus_size_t,
 181                                    uint32_t);
 182 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 183 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 184 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 185 static void     bwi_dma_txstats_free(struct bwi_softc *);
 186 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 187 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 188                                  bus_size_t, int);
 189
 190 static void     bwi_power_on(struct bwi_softc *, int);
 191 static int      bwi_power_off(struct bwi_softc *, int);
 192 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 193 static int      bwi_set_clock_delay(struct bwi_softc *);
 194 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 195 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 196 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 197                                     const uint8_t *);
 198 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 199
 200 static void     bwi_get_card_flags(struct bwi_softc *);
 201 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 202
 203 static int      bwi_bus_attach(struct bwi_softc *);
 204 static int      bwi_bbp_attach(struct bwi_softc *);
 205 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 206 static void     bwi_bbp_power_off(struct bwi_softc *);
 207
 208 static const char *bwi_regwin_name(const struct bwi_regwin *);
 209 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 210 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 211 static int      bwi_regwin_select(struct bwi_softc *, int);
 212
 213 static void     bwi_led_attach(struct bwi_softc *);
 214 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 215 static void     bwi_led_event(struct bwi_softc *, int);
 216 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 217 static void     bwi_led_blink_next(void *);
 218 static void     bwi_led_blink_end(void *);
 219
 220 static const struct {
 221         uint16_t        did_min;
 222         uint16_t        did_max;
 223         uint16_t        bbp_id;
 224 } bwi_bbpid_map[] = {
 225         { 0x4301, 0x4301, 0x4301 },
 226         { 0x4305, 0x4307, 0x4307 },
 227         { 0x4403, 0x4403, 0x4402 },
 228         { 0x4610, 0x4615, 0x4610 },
 229         { 0x4710, 0x4715, 0x4710 },
 230         { 0x4720, 0x4725, 0x4309 }
 231 };
 232
 233 static const struct {
 234         uint16_t        bbp_id;
 235         int             nregwin;
 236 } bwi_regwin_count[] = {
 237         { 0x4301, 5 },
 238         { 0x4306, 6 },
 239         { 0x4307, 5 },
 240         { 0x4310, 8 },
 241         { 0x4401, 3 },
 242         { 0x4402, 3 },
 243         { 0x4610, 9 },
 244         { 0x4704, 9 },
 245         { 0x4710, 9 },
 246         { 0x5365, 7 }
 247 };
 248
 249 #define CLKSRC(src)                             \
 250 [BWI_CLKSRC_ ## src] = {                        \
 251         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 252         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 253 }
 254
 255 static const struct {
 256         u_int   freq_min;
 257         u_int   freq_max;
 258 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 259         CLKSRC(LP_OSC),
 260         CLKSRC(CS_OSC),
 261         CLKSRC(PCI)
 262 };
 263
 264 #undef CLKSRC
 265
 266 #define VENDOR_LED_ACT(vendor)                          \
 267 {                                                       \
 268         .vid = PCI_VENDOR_##vendor,                     \
 269         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 270 }
 271
 272 static const struct {
 273 #define PCI_VENDOR_COMPAQ       0x0e11
 274 #define PCI_VENDOR_LINKSYS      0x1737
 275         uint16_t        vid;
 276         uint8_t         led_act[BWI_LED_MAX];
 277 } bwi_vendor_led_act[] = {
 278         VENDOR_LED_ACT(COMPAQ),
 279         VENDOR_LED_ACT(LINKSYS)
 280 #undef PCI_VENDOR_LINKSYS
 281 #undef PCI_VENDOR_COMPAQ
 282 };
 283
 284 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 285         { BWI_VENDOR_LED_ACT_DEFAULT };
 286
 287 #undef VENDOR_LED_ACT
 288
 289 static const struct {
 290         int     on_dur;
 291         int     off_dur;
 292 } bwi_led_duration[109] = {
 293         [0]     = { 400, 100 },
 294         [2]     = { 150, 75 },
 295         [4]     = { 90, 45 },
 296         [11]    = { 66, 34 },
 297         [12]    = { 53, 26 },
 298         [18]    = { 42, 21 },
 299         [22]    = { 35, 17 },
 300         [24]    = { 32, 16 },
 301         [36]    = { 21, 10 },
 302         [48]    = { 16, 8 },
 303         [72]    = { 11, 5 },
 304         [96]    = { 9, 4 },
 305         [108]   = { 7, 3 }
 306 };
 307
 308 #ifdef BWI_DEBUG
 309 #ifdef BWI_DEBUG_VERBOSE
 310 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 311 #else
 312 static uint32_t bwi_debug;
 313 #endif
 314 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 315 #endif  /* BWI_DEBUG */
 316
 317 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 318
 319 uint16_t
 320 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 321 {
 322         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 323 }
 324
 325 static __inline void
 326 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 327                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 328                  int tx)
 329 {
 330         struct bwi_desc32 *desc = &desc_array[desc_idx];
 331         uint32_t ctrl, addr, addr_hi, addr_lo;
 332
 333         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 334         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 335
 336         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 337                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 338
 339         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 340                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 341         if (desc_idx == ndesc - 1)
 342                 ctrl |= BWI_DESC32_C_EOR;
 343         if (tx) {
 344                 /* XXX */
 345                 ctrl |= BWI_DESC32_C_FRAME_START |
 346                         BWI_DESC32_C_FRAME_END |
 347                         BWI_DESC32_C_INTR;
 348         }
 349
 350         desc->addr = htole32(addr);
 351         desc->ctrl = htole32(ctrl);
 352 }
 353
 354 int
 355 bwi_attach(struct bwi_softc *sc)
 356 {
 357         struct ieee80211com *ic;
 358         device_t dev = sc->sc_dev;
 359         struct ifnet *ifp;
 360         struct bwi_mac *mac;
 361         struct bwi_phy *phy;
 362         int i, error;
 363         uint8_t bands;
 364         uint8_t macaddr[IEEE80211_ADDR_LEN];
 365
 366         BWI_LOCK_INIT(sc);
 367
 368         /*
 369          * Initialize taskq and various tasks
 370          */
 371         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
 372                 taskqueue_thread_enqueue, &sc->sc_tq);
 373         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
 374                 device_get_nameunit(dev));
 375         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
 376
 377         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
 378
 379         /*
 380          * Initialize sysctl variables
 381          */
 382         sc->sc_fw_version = BWI_FW_VERSION3;
 383         sc->sc_led_idle = (2350 * hz) / 1000;
 384         sc->sc_led_blink = 1;
 385         sc->sc_txpwr_calib = 1;
 386 #ifdef BWI_DEBUG
 387         sc->sc_debug = bwi_debug;
 388 #endif
 389         bwi_power_on(sc, 1);
 390
 391         error = bwi_bbp_attach(sc);
 392         if (error)
 393                 goto fail;
 394
 395         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 396         if (error)
 397                 goto fail;
 398
 399         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 400                 error = bwi_set_clock_delay(sc);
 401                 if (error)
 402                         goto fail;
 403
 404                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 405                 if (error)
 406                         goto fail;
 407
 408                 error = bwi_get_pwron_delay(sc);
 409                 if (error)
 410                         goto fail;
 411         }
 412
 413         error = bwi_bus_attach(sc);
 414         if (error)
 415                 goto fail;
 416
 417         bwi_get_card_flags(sc);
 418
 419         bwi_led_attach(sc);
 420
 421         for (i = 0; i < sc->sc_nmac; ++i) {
 422                 struct bwi_regwin *old;
 423
 424                 mac = &sc->sc_mac[i];
 425                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 426                 if (error)
 427                         goto fail;
 428
 429                 error = bwi_mac_lateattach(mac);
 430                 if (error)
 431                         goto fail;
 432
 433                 error = bwi_regwin_switch(sc, old, NULL);
 434                 if (error)
 435                         goto fail;
 436         }
 437
 438         /*
 439          * XXX First MAC is known to exist
 440          * TODO2
 441          */
 442         mac = &sc->sc_mac[0];
 443         phy = &mac->mac_phy;
 444
 445         bwi_bbp_power_off(sc);
 446
 447         error = bwi_dma_alloc(sc);
 448         if (error)
 449                 goto fail;
 450
 451         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 452         if (ifp == NULL) {
 453                 device_printf(dev, "can not if_alloc()\n");
 454                 error = ENOSPC;
 455                 goto fail;
 456         }
 457         ic = ifp->if_l2com;
 458
 459         /* set these up early for if_printf use */
 460         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 461
 462         ifp->if_softc = sc;
 463         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 464         ifp->if_init = bwi_init;
 465         ifp->if_ioctl = bwi_ioctl;
 466         ifp->if_start = bwi_start;
 467         ifp->if_watchdog = bwi_watchdog;
 468         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
 469         ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
 470         IFQ_SET_READY(&ifp->if_snd);
 471
 472         /*
 473          * Setup ratesets, phytype, channels and get MAC address
 474          */
 475         bands = 0;
 476         if (phy->phy_mode == IEEE80211_MODE_11B ||
 477             phy->phy_mode == IEEE80211_MODE_11G) {
 478                 setbit(&bands, IEEE80211_MODE_11B);
 479                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 480                         ic->ic_phytype = IEEE80211_T_DS;
 481                 } else {
 482                         ic->ic_phytype = IEEE80211_T_OFDM;
 483                         setbit(&bands, IEEE80211_MODE_11G);
 484                 }
 485
 486                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
 487                 if (IEEE80211_IS_MULTICAST(macaddr)) {
 488                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
 489                         if (IEEE80211_IS_MULTICAST(macaddr)) {
 490                                 device_printf(dev,
 491                                     "invalid MAC address: %6D\n",
 492                                     macaddr, ":");
 493                         }
 494                 }
 495         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 496                 /* TODO:11A */
 497                 setbit(&bands, IEEE80211_MODE_11A);
 498                 error = ENXIO;
 499                 goto fail;
 500         } else {
 501                 panic("unknown phymode %d\n", phy->phy_mode);
 502         }
 503
 504         /* Get locale */
 505         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 506                                    BWI_SPROM_CARD_INFO_LOCALE);
 507         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 508         /* XXX use locale */
 509         ieee80211_init_channels(ic, NULL, &bands);
 510
 511         ic->ic_ifp = ifp;
 512         ic->ic_caps = IEEE80211_C_STA |
 513                       IEEE80211_C_SHSLOT |
 514                       IEEE80211_C_SHPREAMBLE |
 515                       IEEE80211_C_WPA |
 516                       IEEE80211_C_BGSCAN |
 517                       IEEE80211_C_MONITOR;
 518         ic->ic_opmode = IEEE80211_M_STA;
 519         ieee80211_ifattach(ic, macaddr);
 520
 521         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 522
 523         /* override default methods */
 524         ic->ic_vap_create = bwi_vap_create;
 525         ic->ic_vap_delete = bwi_vap_delete;
 526         ic->ic_raw_xmit = bwi_raw_xmit;
 527         ic->ic_updateslot = bwi_updateslot;
 528         ic->ic_node_alloc = bwi_node_alloc;
 529         ic->ic_scan_start = bwi_scan_start;
 530         ic->ic_scan_end = bwi_scan_end;
 531         ic->ic_set_channel = bwi_set_channel;
 532
 533         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
 534
 535         ieee80211_radiotap_attach(ic,
 536             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
 537                 BWI_TX_RADIOTAP_PRESENT,
 538             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
 539                 BWI_RX_RADIOTAP_PRESENT);
 540
 541         /*
 542          * Add sysctl nodes
 543          */
 544         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 545                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 546                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 547                         "Firmware version");
 548         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 549                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 550                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 551                         "# ticks before LED enters idle state");
 552         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 553                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 554                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 555                        "Allow LED to blink");
 556         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 557                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 558                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 559                        "Enable software TX power calibration");
 560 #ifdef BWI_DEBUG
 561         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 562                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 563                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 564 #endif
 565         if (bootverbose)
 566                 ieee80211_announce(ic);
 567
 568         return (0);
 569 fail:
 570         BWI_LOCK_DESTROY(sc);
 571         return (error);
 572 }
 573
 574 int
 575 bwi_detach(struct bwi_softc *sc)
 576 {
 577         struct ifnet *ifp = sc->sc_ifp;
 578         struct ieee80211com *ic = ifp->if_l2com;
 579         int i;
 580
 581         bwi_stop(sc, 1);
 582         callout_drain(&sc->sc_led_blink_ch);
 583         callout_drain(&sc->sc_calib_ch);
 584         ieee80211_ifdetach(ic);
 585
 586         for (i = 0; i < sc->sc_nmac; ++i)
 587                 bwi_mac_detach(&sc->sc_mac[i]);
 588         bwi_dma_free(sc);
 589         if_free(ifp);
 590         taskqueue_free(sc->sc_tq);
 591
 592         BWI_LOCK_DESTROY(sc);
 593
 594         return (0);
 595 }
 596
 597 static struct ieee80211vap *
 598 bwi_vap_create(struct ieee80211com *ic,
 599         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 600         const uint8_t bssid[IEEE80211_ADDR_LEN],
 601         const uint8_t mac[IEEE80211_ADDR_LEN])
 602 {
 603         struct bwi_vap *bvp;
 604         struct ieee80211vap *vap;
 605
 606         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 607                 return NULL;
 608         bvp = (struct bwi_vap *) malloc(sizeof(struct bwi_vap),
 609             M_80211_VAP, M_WAITOK | M_ZERO);
 610         if (bvp == NULL)
 611                 return NULL;
 612         vap = &bvp->bv_vap;
 613         /* enable s/w bmiss handling for sta mode */
 614         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 615             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 616
 617         /* override default methods */
 618         bvp->bv_newstate = vap->iv_newstate;
 619         vap->iv_newstate = bwi_newstate;
 620 #if 0
 621         vap->iv_update_beacon = bwi_beacon_update;
 622 #endif
 623         ieee80211_amrr_init(&bvp->bv_amrr, vap,
 624             IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD,
 625             IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD,
 626             500 /*ms*/);
 627
 628         /* complete setup */
 629         ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status);
 630         ic->ic_opmode = opmode;
 631         return vap;
 632 }
 633
 634 static void
 635 bwi_vap_delete(struct ieee80211vap *vap)
 636 {
 637         struct bwi_vap *bvp = BWI_VAP(vap);
 638
 639         ieee80211_amrr_cleanup(&bvp->bv_amrr);
 640         ieee80211_vap_detach(vap);
 641         free(bvp, M_80211_VAP);
 642 }
 643
 644 void
 645 bwi_suspend(struct bwi_softc *sc)
 646 {
 647         bwi_stop(sc, 1);
 648 }
 649
 650 void
 651 bwi_resume(struct bwi_softc *sc)
 652 {
 653         struct ifnet *ifp = sc->sc_ifp;
 654
 655         if (ifp->if_flags & IFF_UP)
 656                 bwi_init(sc);
 657 }
 658
 659 int
 660 bwi_shutdown(struct bwi_softc *sc)
 661 {
 662         bwi_stop(sc, 1);
 663         return 0;
 664 }
 665
 666 static void
 667 bwi_power_on(struct bwi_softc *sc, int with_pll)
 668 {
 669         uint32_t gpio_in, gpio_out, gpio_en;
 670         uint16_t status;
 671
 672         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 673         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 674                 goto back;
 675
 676         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 677         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 678
 679         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 680         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 681         if (with_pll) {
 682                 /* Turn off PLL first */
 683                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 684                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 685         }
 686
 687         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 688         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 689         DELAY(1000);
 690
 691         if (with_pll) {
 692                 /* Turn on PLL */
 693                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 694                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 695                 DELAY(5000);
 696         }
 697
 698 back:
 699         /* Clear "Signaled Target Abort" */
 700         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 701         status &= ~PCIM_STATUS_STABORT;
 702         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 703 }
 704
 705 static int
 706 bwi_power_off(struct bwi_softc *sc, int with_pll)
 707 {
 708         uint32_t gpio_out, gpio_en;
 709
 710         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 711         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 712         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 713
 714         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 715         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 716         if (with_pll) {
 717                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 718                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 719         }
 720
 721         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 722         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 723         return 0;
 724 }
 725
 726 int
 727 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 728                   struct bwi_regwin **old_rw)
 729 {
 730         int error;
 731
 732         if (old_rw != NULL)
 733                 *old_rw = NULL;
 734
 735         if (!BWI_REGWIN_EXIST(rw))
 736                 return EINVAL;
 737
 738         if (sc->sc_cur_regwin != rw) {
 739                 error = bwi_regwin_select(sc, rw->rw_id);
 740                 if (error) {
 741                         device_printf(sc->sc_dev, "can't select regwin %d\n",
 742                                   rw->rw_id);
 743                         return error;
 744                 }
 745         }
 746
 747         if (old_rw != NULL)
 748                 *old_rw = sc->sc_cur_regwin;
 749         sc->sc_cur_regwin = rw;
 750         return 0;
 751 }
 752
 753 static int
 754 bwi_regwin_select(struct bwi_softc *sc, int id)
 755 {
 756         uint32_t win = BWI_PCIM_REGWIN(id);
 757         int i;
 758
 759 #define RETRY_MAX       50
 760         for (i = 0; i < RETRY_MAX; ++i) {
 761                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 762                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 763                         return 0;
 764                 DELAY(10);
 765         }
 766 #undef RETRY_MAX
 767
 768         return ENXIO;
 769 }
 770
 771 static void
 772 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 773 {
 774         uint32_t val;
 775
 776         val = CSR_READ_4(sc, BWI_ID_HI);
 777         *type = BWI_ID_HI_REGWIN_TYPE(val);
 778         *rev = BWI_ID_HI_REGWIN_REV(val);
 779
 780         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 781                 "vendor 0x%04x\n", *type, *rev,
 782                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 783 }
 784
 785 static int
 786 bwi_bbp_attach(struct bwi_softc *sc)
 787 {
 788 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
 789         uint16_t bbp_id, rw_type;
 790         uint8_t rw_rev;
 791         uint32_t info;
 792         int error, nregwin, i;
 793
 794         /*
 795          * Get 0th regwin information
 796          * NOTE: 0th regwin should exist
 797          */
 798         error = bwi_regwin_select(sc, 0);
 799         if (error) {
 800                 device_printf(sc->sc_dev, "can't select regwin 0\n");
 801                 return error;
 802         }
 803         bwi_regwin_info(sc, &rw_type, &rw_rev);
 804
 805         /*
 806          * Find out BBP id
 807          */
 808         bbp_id = 0;
 809         info = 0;
 810         if (rw_type == BWI_REGWIN_T_COM) {
 811                 info = CSR_READ_4(sc, BWI_INFO);
 812                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
 813
 814                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
 815
 816                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
 817         } else {
 818                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
 819                         if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
 820                             sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
 821                                 bbp_id = bwi_bbpid_map[i].bbp_id;
 822                                 break;
 823                         }
 824                 }
 825                 if (bbp_id == 0) {
 826                         device_printf(sc->sc_dev, "no BBP id for device id "
 827                                       "0x%04x\n", sc->sc_pci_did);
 828                         return ENXIO;
 829                 }
 830
 831                 info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
 832                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
 833         }
 834
 835         /*
 836          * Find out number of regwins
 837          */
 838         nregwin = 0;
 839         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
 840                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
 841         } else {
 842                 for (i = 0; i < N(bwi_regwin_count); ++i) {
 843                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
 844                                 nregwin = bwi_regwin_count[i].nregwin;
 845                                 break;
 846                         }
 847                 }
 848                 if (nregwin == 0) {
 849                         device_printf(sc->sc_dev, "no number of win for "
 850                                       "BBP id 0x%04x\n", bbp_id);
 851                         return ENXIO;
 852                 }
 853         }
 854
 855         /* Record BBP id/rev for later using */
 856         sc->sc_bbp_id = bbp_id;
 857         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
 858         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
 859         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
 860                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
 861
 862         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
 863                 nregwin, sc->sc_cap);
 864
 865         /*
 866          * Create rest of the regwins
 867          */
 868
 869         /* Don't re-create common regwin, if it is already created */
 870         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
 871
 872         for (; i < nregwin; ++i) {
 873                 /*
 874                  * Get regwin information
 875                  */
 876                 error = bwi_regwin_select(sc, i);
 877                 if (error) {
 878                         device_printf(sc->sc_dev,
 879                                       "can't select regwin %d\n", i);
 880                         return error;
 881                 }
 882                 bwi_regwin_info(sc, &rw_type, &rw_rev);
 883
 884                 /*
 885                  * Try attach:
 886                  * 1) Bus (PCI/PCIE) regwin
 887                  * 2) MAC regwin
 888                  * Ignore rest types of regwin
 889                  */
 890                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
 891                     rw_type == BWI_REGWIN_T_BUSPCIE) {
 892                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 893                                 device_printf(sc->sc_dev,
 894                                               "bus regwin already exists\n");
 895                         } else {
 896                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
 897                                                   rw_type, rw_rev);
 898                         }
 899                 } else if (rw_type == BWI_REGWIN_T_MAC) {
 900                         /* XXX ignore return value */
 901                         bwi_mac_attach(sc, i, rw_rev);
 902                 }
 903         }
 904
 905         /* At least one MAC shold exist */
 906         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
 907                 device_printf(sc->sc_dev, "no MAC was found\n");
 908                 return ENXIO;
 909         }
 910         KASSERT(sc->sc_nmac > 0, ("no mac's"));
 911
 912         /* Bus regwin must exist */
 913         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 914                 device_printf(sc->sc_dev, "no bus regwin was found\n");
 915                 return ENXIO;
 916         }
 917
 918         /* Start with first MAC */
 919         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
 920         if (error)
 921                 return error;
 922
 923         return 0;
 924 #undef N
 925 }
 926
 927 int
 928 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
 929 {
 930         struct bwi_regwin *old, *bus;
 931         uint32_t val;
 932         int error;
 933
 934         bus = &sc->sc_bus_regwin;
 935         KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
 936
 937         /*
 938          * Tell bus to generate requested interrupts
 939          */
 940         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 941                 /*
 942                  * NOTE: Read BWI_FLAGS from MAC regwin
 943                  */
 944                 val = CSR_READ_4(sc, BWI_FLAGS);
 945
 946                 error = bwi_regwin_switch(sc, bus, &old);
 947                 if (error)
 948                         return error;
 949
 950                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
 951         } else {
 952                 uint32_t mac_mask;
 953
 954                 mac_mask = 1 << mac->mac_id;
 955
 956                 error = bwi_regwin_switch(sc, bus, &old);
 957                 if (error)
 958                         return error;
 959
 960                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
 961                 val |= mac_mask << 8;
 962                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
 963         }
 964
 965         if (sc->sc_flags & BWI_F_BUS_INITED)
 966                 goto back;
 967
 968         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 969                 /*
 970                  * Enable prefetch and burst
 971                  */
 972                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
 973                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
 974
 975                 if (bus->rw_rev < 5) {
 976                         struct bwi_regwin *com = &sc->sc_com_regwin;
 977
 978                         /*
 979                          * Configure timeouts for bus operation
 980                          */
 981
 982                         /*
 983                          * Set service timeout and request timeout
 984                          */
 985                         CSR_SETBITS_4(sc, BWI_CONF_LO,
 986                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
 987                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
 988
 989                         /*
 990                          * If there is common regwin, we switch to that regwin
 991                          * and switch back to bus regwin once we have done.
 992                          */
 993                         if (BWI_REGWIN_EXIST(com)) {
 994                                 error = bwi_regwin_switch(sc, com, NULL);
 995                                 if (error)
 996                                         return error;
 997                         }
 998
 999                         /* Let bus know what we have changed */
1000                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1001                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1002                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1003                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1004
1005                         if (BWI_REGWIN_EXIST(com)) {
1006                                 error = bwi_regwin_switch(sc, bus, NULL);
1007                                 if (error)
1008                                         return error;
1009                         }
1010                 } else if (bus->rw_rev >= 11) {
1011                         /*
1012                          * Enable memory read multiple
1013                          */
1014                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1015                 }
1016         } else {
1017                 /* TODO:PCIE */
1018         }
1019
1020         sc->sc_flags |= BWI_F_BUS_INITED;
1021 back:
1022         return bwi_regwin_switch(sc, old, NULL);
1023 }
1024
1025 static void
1026 bwi_get_card_flags(struct bwi_softc *sc)
1027 {
1028 #define PCI_VENDOR_APPLE 0x106b
1029 #define PCI_VENDOR_DELL  0x1028
1030         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1031         if (sc->sc_card_flags == 0xffff)
1032                 sc->sc_card_flags = 0;
1033
1034         if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
1035             sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
1036             sc->sc_pci_revid == 0x74)
1037                 sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
1038
1039         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1040             sc->sc_pci_subdid == 0x4e && /* XXX */
1041             sc->sc_pci_revid > 0x40)
1042                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1043
1044         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1045 #undef PCI_VENDOR_DELL
1046 #undef PCI_VENDOR_APPLE
1047 }
1048
1049 static void
1050 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1051 {
1052         int i;
1053
1054         for (i = 0; i < 3; ++i) {
1055                 *((uint16_t *)eaddr + i) =
1056                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1057         }
1058 }
1059
1060 static void
1061 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1062 {
1063         struct bwi_regwin *com;
1064         uint32_t val;
1065         u_int div;
1066         int src;
1067
1068         bzero(freq, sizeof(*freq));
1069         com = &sc->sc_com_regwin;
1070
1071         KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
1072         KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
1073         KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
1074
1075         /*
1076          * Calculate clock frequency
1077          */
1078         src = -1;
1079         div = 0;
1080         if (com->rw_rev < 6) {
1081                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1082                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1083                         src = BWI_CLKSRC_PCI;
1084                         div = 64;
1085                 } else {
1086                         src = BWI_CLKSRC_CS_OSC;
1087                         div = 32;
1088                 }
1089         } else if (com->rw_rev < 10) {
1090                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1091
1092                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1093                 if (src == BWI_CLKSRC_LP_OSC) {
1094                         div = 1;
1095                 } else {
1096                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1097
1098                         /* Unknown source */
1099                         if (src >= BWI_CLKSRC_MAX)
1100                                 src = BWI_CLKSRC_CS_OSC;
1101                 }
1102         } else {
1103                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1104
1105                 src = BWI_CLKSRC_CS_OSC;
1106                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1107         }
1108
1109         KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
1110         KASSERT(div != 0, ("div zero"));
1111
1112         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1113                 src == BWI_CLKSRC_PCI ? "PCI" :
1114                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1115
1116         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1117         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1118
1119         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1120                 freq->clkfreq_min, freq->clkfreq_max);
1121 }
1122
1123 static int
1124 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1125 {
1126         struct bwi_regwin *old, *com;
1127         uint32_t clk_ctrl, clk_src;
1128         int error, pwr_off = 0;
1129
1130         com = &sc->sc_com_regwin;
1131         if (!BWI_REGWIN_EXIST(com))
1132                 return 0;
1133
1134         if (com->rw_rev >= 10 || com->rw_rev < 6)
1135                 return 0;
1136
1137         /*
1138          * For common regwin whose rev is [6, 10), the chip
1139          * must be capable to change clock mode.
1140          */
1141         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1142                 return 0;
1143
1144         error = bwi_regwin_switch(sc, com, &old);
1145         if (error)
1146                 return error;
1147
1148         if (clk_mode == BWI_CLOCK_MODE_FAST)
1149                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1150
1151         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1152         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1153
1154         switch (clk_mode) {
1155         case BWI_CLOCK_MODE_FAST:
1156                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1157                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1158                 break;
1159         case BWI_CLOCK_MODE_SLOW:
1160                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1161                 break;
1162         case BWI_CLOCK_MODE_DYN:
1163                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1164                               BWI_CLOCK_CTRL_IGNPLL |
1165                               BWI_CLOCK_CTRL_NODYN);
1166                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1167                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1168                         pwr_off = 1;
1169                 }
1170                 break;
1171         }
1172         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1173
1174         if (pwr_off)
1175                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1176
1177         return bwi_regwin_switch(sc, old, NULL);
1178 }
1179
1180 static int
1181 bwi_set_clock_delay(struct bwi_softc *sc)
1182 {
1183         struct bwi_regwin *old, *com;
1184         int error;
1185
1186         com = &sc->sc_com_regwin;
1187         if (!BWI_REGWIN_EXIST(com))
1188                 return 0;
1189
1190         error = bwi_regwin_switch(sc, com, &old);
1191         if (error)
1192                 return error;
1193
1194         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1195                 if (sc->sc_bbp_rev == 0)
1196                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1197                 else if (sc->sc_bbp_rev == 1)
1198                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1199         }
1200
1201         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1202                 if (com->rw_rev >= 10) {
1203                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1204                 } else {
1205                         struct bwi_clock_freq freq;
1206
1207                         bwi_get_clock_freq(sc, &freq);
1208                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1209                                 howmany(freq.clkfreq_max * 150, 1000000));
1210                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1211                                 howmany(freq.clkfreq_max * 15, 1000000));
1212                 }
1213         }
1214
1215         return bwi_regwin_switch(sc, old, NULL);
1216 }
1217
1218 static void
1219 bwi_init(void *xsc)
1220 {
1221         struct bwi_softc *sc = xsc;
1222         struct ifnet *ifp = sc->sc_ifp;
1223         struct ieee80211com *ic = ifp->if_l2com;
1224
1225         BWI_LOCK(sc);
1226         bwi_init_statechg(sc, 1);
1227         BWI_UNLOCK(sc);
1228
1229         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1230                 ieee80211_start_all(ic);                /* start all vap's */
1231 }
1232
1233 static void
1234 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1235 {
1236         struct ifnet *ifp = sc->sc_ifp;
1237         struct bwi_mac *mac;
1238         int error;
1239
1240         bwi_stop_locked(sc, statechg);
1241
1242         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1243
1244         /* TODO: 2 MAC */
1245
1246         mac = &sc->sc_mac[0];
1247         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1248         if (error) {
1249                 if_printf(ifp, "%s: error %d on regwin switch\n",
1250                     __func__, error);
1251                 goto bad;
1252         }
1253         error = bwi_mac_init(mac);
1254         if (error) {
1255                 if_printf(ifp, "%s: error %d on MAC init\n", __func__, error);
1256                 goto bad;
1257         }
1258
1259         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1260
1261         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1262         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, IF_LLADDR(ifp));
1263
1264         bwi_mac_reset_hwkeys(mac);
1265
1266         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1267                 int i;
1268
1269 #define NRETRY  1000
1270                 /*
1271                  * Drain any possible pending TX status
1272                  */
1273                 for (i = 0; i < NRETRY; ++i) {
1274                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1275                              BWI_TXSTATUS0_VALID) == 0)
1276                                 break;
1277                         CSR_READ_4(sc, BWI_TXSTATUS1);
1278                 }
1279                 if (i == NRETRY)
1280                         if_printf(ifp, "%s: can't drain TX status\n", __func__);
1281 #undef NRETRY
1282         }
1283
1284         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1285                 bwi_mac_updateslot(mac, 1);
1286
1287         /* Start MAC */
1288         error = bwi_mac_start(mac);
1289         if (error) {
1290                 if_printf(ifp, "%s: error %d starting MAC\n", __func__, error);
1291                 goto bad;
1292         }
1293
1294         /* Clear stop flag before enabling interrupt */
1295         sc->sc_flags &= ~BWI_F_STOP;
1296
1297         ifp->if_drv_flags |= IFF_DRV_RUNNING;
1298
1299         /* Enable intrs */
1300         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1301         return;
1302 bad:
1303         bwi_stop_locked(sc, 1);
1304 }
1305
1306 static int
1307 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1308 {
1309 #define IS_RUNNING(ifp) \
1310         ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1311         struct bwi_softc *sc = ifp->if_softc;
1312         struct ieee80211com *ic = ifp->if_l2com;
1313         struct ifreq *ifr = (struct ifreq *) data;
1314         int error = 0, startall = 0;
1315
1316         switch (cmd) {
1317         case SIOCSIFFLAGS:
1318                 BWI_LOCK(sc);
1319                 if (IS_RUNNING(ifp)) {
1320                         struct bwi_mac *mac;
1321                         int promisc = -1;
1322
1323                         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1324                             ("current regwin type %d",
1325                             sc->sc_cur_regwin->rw_type));
1326                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1327
1328                         if ((ifp->if_flags & IFF_PROMISC) &&
1329                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1330                                 promisc = 1;
1331                                 sc->sc_flags |= BWI_F_PROMISC;
1332                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1333                                    (sc->sc_flags & BWI_F_PROMISC)) {
1334                                 promisc = 0;
1335                                 sc->sc_flags &= ~BWI_F_PROMISC;
1336                         }
1337
1338                         if (promisc >= 0)
1339                                 bwi_mac_set_promisc(mac, promisc);
1340                 }
1341
1342                 if (ifp->if_flags & IFF_UP) {
1343                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1344                                 bwi_init_statechg(sc, 1);
1345                                 startall = 1;
1346                         }
1347                 } else {
1348                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1349                                 bwi_stop_locked(sc, 1);
1350                 }
1351                 BWI_UNLOCK(sc);
1352                 if (startall)
1353                         ieee80211_start_all(ic);
1354                 break;
1355         case SIOCGIFMEDIA:
1356                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1357                 break;
1358         case SIOCGIFADDR:
1359                 error = ether_ioctl(ifp, cmd, data);
1360                 break;
1361         default:
1362                 error = EINVAL;
1363                 break;
1364         }
1365         return error;
1366 #undef IS_RUNNING
1367 }
1368
1369 static void
1370 bwi_start(struct ifnet *ifp)
1371 {
1372         struct bwi_softc *sc = ifp->if_softc;
1373
1374         BWI_LOCK(sc);
1375         bwi_start_locked(ifp);
1376         BWI_UNLOCK(sc);
1377 }
1378
1379 static void
1380 bwi_start_locked(struct ifnet *ifp)
1381 {
1382         struct bwi_softc *sc = ifp->if_softc;
1383         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1384         struct ieee80211_frame *wh;
1385         struct ieee80211_node *ni;
1386         struct ieee80211_key *k;
1387         struct mbuf *m;
1388         int trans, idx;
1389
1390         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1391                 return;
1392
1393         trans = 0;
1394         idx = tbd->tbd_idx;
1395
1396         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1397                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);       /* XXX: LOCK */
1398                 if (m == NULL)
1399                         break;
1400
1401                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1402                 wh = mtod(m, struct ieee80211_frame *);
1403                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1404                         k = ieee80211_crypto_encap(ni, m);
1405                         if (k == NULL) {
1406                                 ieee80211_free_node(ni);
1407                                 m_freem(m);
1408                                 ifp->if_oerrors++;
1409                                 continue;
1410                         }
1411                 }
1412                 wh = NULL;      /* Catch any invalid use */
1413
1414                 if (bwi_encap(sc, idx, m, ni) != 0) {
1415                         /* 'm' is freed in bwi_encap() if we reach here */
1416                         if (ni != NULL)
1417                                 ieee80211_free_node(ni);
1418                         ifp->if_oerrors++;
1419                         continue;
1420                 }
1421
1422                 trans = 1;
1423                 tbd->tbd_used++;
1424                 idx = (idx + 1) % BWI_TX_NDESC;
1425
1426                 ifp->if_opackets++;
1427
1428                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1429                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1430                         break;
1431                 }
1432         }
1433         tbd->tbd_idx = idx;
1434
1435         if (trans)
1436                 ifp->if_timer = 5;
1437 }
1438
1439 static int
1440 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1441         const struct ieee80211_bpf_params *params)
1442 {
1443         struct ieee80211com *ic = ni->ni_ic;
1444         struct ifnet *ifp = ic->ic_ifp;
1445         struct bwi_softc *sc = ifp->if_softc;
1446         /* XXX wme? */
1447         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1448         int idx, error;
1449
1450         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1451                 ieee80211_free_node(ni);
1452                 m_freem(m);
1453                 return ENETDOWN;
1454         }
1455
1456         BWI_LOCK(sc);
1457         idx = tbd->tbd_idx;
1458         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
1459         if (params == NULL) {
1460                 /*
1461                  * Legacy path; interpret frame contents to decide
1462                  * precisely how to send the frame.
1463                  */
1464                 error = bwi_encap(sc, idx, m, ni);
1465         } else {
1466                 /*
1467                  * Caller supplied explicit parameters to use in
1468                  * sending the frame.
1469                  */
1470                 error = bwi_encap_raw(sc, idx, m, ni, params);
1471         }
1472         if (error == 0) {
1473                 ifp->if_opackets++;
1474                 if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
1475                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1476                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
1477                 ifp->if_timer = 5;
1478         } else {
1479                 /* NB: m is reclaimed on encap failure */
1480                 ieee80211_free_node(ni);
1481                 ifp->if_oerrors++;
1482         }
1483         BWI_UNLOCK(sc);
1484         return error;
1485 }
1486
1487 static void
1488 bwi_watchdog(struct ifnet *ifp)
1489 {
1490         struct bwi_softc *sc = ifp->if_softc;
1491
1492         BWI_LOCK(sc);
1493         if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1494                 if_printf(ifp, "watchdog timeout\n");
1495                 ifp->if_oerrors++;
1496                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1497         }
1498         BWI_UNLOCK(sc);
1499 }
1500
1501 static void
1502 bwi_stop(struct bwi_softc *sc, int statechg)
1503 {
1504         BWI_LOCK(sc);
1505         bwi_stop_locked(sc, statechg);
1506         BWI_UNLOCK(sc);
1507 }
1508
1509 static void
1510 bwi_stop_locked(struct bwi_softc *sc, int statechg)
1511 {
1512         struct ifnet *ifp = sc->sc_ifp;
1513         struct bwi_mac *mac;
1514         int i, error, pwr_off = 0;
1515
1516         BWI_ASSERT_LOCKED(sc);
1517
1518         callout_stop(&sc->sc_calib_ch);
1519         callout_stop(&sc->sc_led_blink_ch);
1520         sc->sc_led_blinking = 0;
1521         sc->sc_flags |= BWI_F_STOP;
1522
1523         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1524                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1525                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1526                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1527
1528                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1529                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1530                 bwi_mac_stop(mac);
1531         }
1532
1533         for (i = 0; i < sc->sc_nmac; ++i) {
1534                 struct bwi_regwin *old_rw;
1535
1536                 mac = &sc->sc_mac[i];
1537                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1538                         continue;
1539
1540                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1541                 if (error)
1542                         continue;
1543
1544                 bwi_mac_shutdown(mac);
1545                 pwr_off = 1;
1546
1547                 bwi_regwin_switch(sc, old_rw, NULL);
1548         }
1549
1550         if (pwr_off)
1551                 bwi_bbp_power_off(sc);
1552
1553         sc->sc_tx_timer = 0;
1554         ifp->if_timer = 0;
1555         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1556 }
1557
1558 void
1559 bwi_intr(void *xsc)
1560 {
1561         struct bwi_softc *sc = xsc;
1562         struct ifnet *ifp = sc->sc_ifp;
1563         struct bwi_mac *mac;
1564         uint32_t intr_status;
1565         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1566         int i, txrx_error, tx = 0, rx_data = -1;
1567
1568         BWI_LOCK(sc);
1569
1570         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1571             (sc->sc_flags & BWI_F_STOP)) {
1572                 BWI_UNLOCK(sc);
1573                 return;
1574         }
1575         /*
1576          * Get interrupt status
1577          */
1578         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1579         if (intr_status == 0xffffffff) {        /* Not for us */
1580                 BWI_UNLOCK(sc);
1581                 return;
1582         }
1583
1584         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1585
1586         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1587         if (intr_status == 0) {         /* Nothing is interesting */
1588                 BWI_UNLOCK(sc);
1589                 return;
1590         }
1591
1592         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1593             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1594         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1595
1596         txrx_error = 0;
1597         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1598         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1599                 uint32_t mask;
1600
1601                 if (BWI_TXRX_IS_RX(i))
1602                         mask = BWI_TXRX_RX_INTRS;
1603                 else
1604                         mask = BWI_TXRX_TX_INTRS;
1605
1606                 txrx_intr_status[i] =
1607                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1608
1609                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1610                          i, txrx_intr_status[i]);
1611
1612                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1613                         if_printf(ifp,
1614                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
1615                             __func__, i, txrx_intr_status[i]);
1616                         txrx_error = 1;
1617                 }
1618         }
1619         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1620
1621         /*
1622          * Acknowledge interrupt
1623          */
1624         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1625
1626         for (i = 0; i < BWI_TXRX_NRING; ++i)
1627                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1628
1629         /* Disable all interrupts */
1630         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1631
1632         /*
1633          * http://bcm-specs.sipsolutions.net/Interrupts
1634          * Says for this bit (0x800):
1635          * "Fatal Error
1636          *
1637          * We got this one while testing things when by accident the
1638          * template ram wasn't set to big endian when it should have
1639          * been after writing the initial values. It keeps on being
1640          * triggered, the only way to stop it seems to shut down the
1641          * chip."
1642          *
1643          * Suggesting that we should never get it and if we do we're not
1644          * feeding TX packets into the MAC correctly if we do...  Apparently,
1645          * it is valid only on mac version 5 and higher, but I couldn't
1646          * find a reference for that...  Since I see them from time to time
1647          * on my card, this suggests an error in the tx path still...
1648          */
1649         if (intr_status & BWI_INTR_PHY_TXERR) {
1650                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1651                         if_printf(ifp, "%s: intr PHY TX error\n", __func__);
1652                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1653                         BWI_UNLOCK(sc);
1654                         return;
1655                 }
1656         }
1657
1658         if (txrx_error) {
1659                 /* TODO: reset device */
1660         }
1661
1662         if (intr_status & BWI_INTR_TBTT)
1663                 bwi_mac_config_ps(mac);
1664
1665         if (intr_status & BWI_INTR_EO_ATIM)
1666                 if_printf(ifp, "EO_ATIM\n");
1667
1668         if (intr_status & BWI_INTR_PMQ) {
1669                 for (;;) {
1670                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1671                                 break;
1672                 }
1673                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1674         }
1675
1676         if (intr_status & BWI_INTR_NOISE)
1677                 if_printf(ifp, "intr noise\n");
1678
1679         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
1680                 rx_data = sc->sc_rxeof(sc);
1681                 if (sc->sc_flags & BWI_F_STOP) {
1682                         BWI_UNLOCK(sc);
1683                         return;
1684                 }
1685         }
1686
1687         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1688                 sc->sc_txeof_status(sc);
1689                 tx = 1;
1690         }
1691
1692         if (intr_status & BWI_INTR_TX_DONE) {
1693                 bwi_txeof(sc);
1694                 tx = 1;
1695         }
1696
1697         /* Re-enable interrupts */
1698         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1699
1700         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1701                 int evt = BWI_LED_EVENT_NONE;
1702
1703                 if (tx && rx_data > 0) {
1704                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1705                                 evt = BWI_LED_EVENT_RX;
1706                         else
1707                                 evt = BWI_LED_EVENT_TX;
1708                 } else if (tx) {
1709                         evt = BWI_LED_EVENT_TX;
1710                 } else if (rx_data > 0) {
1711                         evt = BWI_LED_EVENT_RX;
1712                 } else if (rx_data == 0) {
1713                         evt = BWI_LED_EVENT_POLL;
1714                 }
1715
1716                 if (evt != BWI_LED_EVENT_NONE)
1717                         bwi_led_event(sc, evt);
1718         }
1719
1720         BWI_UNLOCK(sc);
1721 }
1722
1723 static void
1724 bwi_scan_start(struct ieee80211com *ic)
1725 {
1726         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1727
1728         BWI_LOCK(sc);
1729         /* Enable MAC beacon promiscuity */
1730         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1731         BWI_UNLOCK(sc);
1732 }
1733
1734 static void
1735 bwi_set_channel(struct ieee80211com *ic)
1736 {
1737         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1738         struct ieee80211_channel *c = ic->ic_curchan;
1739         struct bwi_mac *mac;
1740
1741         BWI_LOCK(sc);
1742         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1743             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1744         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1745         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
1746
1747         sc->sc_rates = ieee80211_get_ratetable(c);
1748
1749         /*
1750          * Setup radio tap channel freq and flags
1751          */
1752         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
1753                 htole16(c->ic_freq);
1754         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
1755                 htole16(c->ic_flags & 0xffff);
1756
1757         BWI_UNLOCK(sc);
1758 }
1759
1760 static void
1761 bwi_scan_end(struct ieee80211com *ic)
1762 {
1763         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1764
1765         BWI_LOCK(sc);
1766         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1767         BWI_UNLOCK(sc);
1768 }
1769
1770 static int
1771 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1772 {
1773         struct bwi_vap *bvp = BWI_VAP(vap);
1774         struct ieee80211com *ic= vap->iv_ic;
1775         struct ifnet *ifp = ic->ic_ifp;
1776         enum ieee80211_state ostate = vap->iv_state;
1777         struct bwi_softc *sc = ifp->if_softc;
1778         struct bwi_mac *mac;
1779         struct ieee80211_node *ni = vap->iv_bss;
1780         int error;
1781
1782         BWI_LOCK(sc);
1783
1784         callout_stop(&sc->sc_calib_ch);
1785
1786         if (nstate == IEEE80211_S_INIT)
1787                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1788
1789         bwi_led_newstate(sc, nstate);
1790
1791         error = bvp->bv_newstate(vap, nstate, arg);
1792         if (error != 0)
1793                 goto back;
1794
1795         /*
1796          * Clear the BSSID when we stop a STA
1797          */
1798         if (vap->iv_opmode == IEEE80211_M_STA) {
1799                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
1800                         /*
1801                          * Clear out the BSSID.  If we reassociate to
1802                          * the same AP, this will reinialize things
1803                          * correctly...
1804                          */
1805                         if (ic->ic_opmode == IEEE80211_M_STA &&
1806                             !(sc->sc_flags & BWI_F_STOP))
1807                                 bwi_set_bssid(sc, bwi_zero_addr);
1808                 }
1809         }
1810
1811         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1812                 /* Nothing to do */
1813         } else if (nstate == IEEE80211_S_RUN) {
1814                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
1815
1816                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1817                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1818                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1819
1820                 /* Initial TX power calibration */
1821                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1822 #ifdef notyet
1823                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1824 #else
1825                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1826 #endif
1827                 if (vap->iv_opmode == IEEE80211_M_STA) {
1828                         /* fake a join to init the tx rate */
1829                         bwi_newassoc(ni, 1);
1830                 }
1831
1832                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1833         }
1834 back:
1835         BWI_UNLOCK(sc);
1836
1837         return error;
1838 }
1839
1840 /* ARGUSED */
1841 static struct ieee80211_node *
1842 bwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
1843 {
1844         struct bwi_node *bn;
1845
1846         bn = malloc(sizeof(struct bwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
1847         return bn != NULL ? &bn->ni : NULL;
1848 }
1849
1850 static void
1851 bwi_newassoc(struct ieee80211_node *ni, int isnew)
1852 {
1853         struct ieee80211vap *vap = ni->ni_vap;
1854
1855         ieee80211_amrr_node_init(&BWI_VAP(vap)->bv_amrr,
1856             &BWI_NODE(ni)->amn, ni);
1857 }
1858
1859 static int
1860 bwi_media_change(struct ifnet *ifp)
1861 {
1862         int error = ieee80211_media_change(ifp);
1863         /* NB: only the fixed rate can change and that doesn't need a reset */
1864         return (error == ENETRESET ? 0 : error);
1865 }
1866
1867 static int
1868 bwi_dma_alloc(struct bwi_softc *sc)
1869 {
1870         int error, i, has_txstats;
1871         bus_addr_t lowaddr = 0;
1872         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1873         uint32_t txrx_ctrl_step = 0;
1874
1875         has_txstats = 0;
1876         for (i = 0; i < sc->sc_nmac; ++i) {
1877                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1878                         has_txstats = 1;
1879                         break;
1880                 }
1881         }
1882
1883         switch (sc->sc_bus_space) {
1884         case BWI_BUS_SPACE_30BIT:
1885         case BWI_BUS_SPACE_32BIT:
1886                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1887                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1888                 else
1889                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1890                 desc_sz = sizeof(struct bwi_desc32);
1891                 txrx_ctrl_step = 0x20;
1892
1893                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1894                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1895                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1896                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1897                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1898                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1899                 sc->sc_rxeof = bwi_rxeof32;
1900                 sc->sc_start_tx = bwi_start_tx32;
1901                 if (has_txstats) {
1902                         sc->sc_init_txstats = bwi_init_txstats32;
1903                         sc->sc_free_txstats = bwi_free_txstats32;
1904                         sc->sc_txeof_status = bwi_txeof_status32;
1905                 }
1906                 break;
1907
1908         case BWI_BUS_SPACE_64BIT:
1909                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
1910                 desc_sz = sizeof(struct bwi_desc64);
1911                 txrx_ctrl_step = 0x40;
1912
1913                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
1914                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
1915                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
1916                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
1917                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
1918                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
1919                 sc->sc_rxeof = bwi_rxeof64;
1920                 sc->sc_start_tx = bwi_start_tx64;
1921                 if (has_txstats) {
1922                         sc->sc_init_txstats = bwi_init_txstats64;
1923                         sc->sc_free_txstats = bwi_free_txstats64;
1924                         sc->sc_txeof_status = bwi_txeof_status64;
1925                 }
1926                 break;
1927         }
1928
1929         KASSERT(lowaddr != 0, ("lowaddr zero"));
1930         KASSERT(desc_sz != 0, ("desc_sz zero"));
1931         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
1932
1933         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
1934         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
1935
1936         /*
1937          * Create top level DMA tag
1938          */
1939         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
1940                                BWI_ALIGN, 0,            /* alignment, bounds */
1941                                lowaddr,                 /* lowaddr */
1942                                BUS_SPACE_MAXADDR,       /* highaddr */
1943                                NULL, NULL,              /* filter, filterarg */
1944                                MAXBSIZE,                /* maxsize */
1945                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
1946                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1947                                BUS_DMA_ALLOCNOW,        /* flags */
1948                                NULL, NULL,              /* lockfunc, lockarg */
1949                                &sc->sc_parent_dtag);
1950         if (error) {
1951                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
1952                 return error;
1953         }
1954
1955 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
1956
1957         /*
1958          * Create TX ring DMA stuffs
1959          */
1960         error = bus_dma_tag_create(sc->sc_parent_dtag,
1961                                 BWI_RING_ALIGN, 0,
1962                                 BUS_SPACE_MAXADDR,
1963                                 BUS_SPACE_MAXADDR,
1964                                 NULL, NULL,
1965                                 tx_ring_sz,
1966                                 1,
1967                                 BUS_SPACE_MAXSIZE_32BIT,
1968                                 BUS_DMA_ALLOCNOW,
1969                                 NULL, NULL,
1970                                 &sc->sc_txring_dtag);
1971         if (error) {
1972                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
1973                 return error;
1974         }
1975
1976         for (i = 0; i < BWI_TX_NRING; ++i) {
1977                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
1978                                            &sc->sc_tx_rdata[i], tx_ring_sz,
1979                                            TXRX_CTRL(i));
1980                 if (error) {
1981                         device_printf(sc->sc_dev, "%dth TX ring "
1982                                       "DMA alloc failed\n", i);
1983                         return error;
1984                 }
1985         }
1986
1987         /*
1988          * Create RX ring DMA stuffs
1989          */
1990         error = bus_dma_tag_create(sc->sc_parent_dtag,
1991                                 BWI_RING_ALIGN, 0,
1992                                 BUS_SPACE_MAXADDR,
1993                                 BUS_SPACE_MAXADDR,
1994                                 NULL, NULL,
1995                                 rx_ring_sz,
1996                                 1,
1997                                 BUS_SPACE_MAXSIZE_32BIT,
1998                                 BUS_DMA_ALLOCNOW,
1999                                 NULL, NULL,
2000                                 &sc->sc_rxring_dtag);
2001         if (error) {
2002                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2003                 return error;
2004         }
2005
2006         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2007                                    rx_ring_sz, TXRX_CTRL(0));
2008         if (error) {
2009                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2010                 return error;
2011         }
2012
2013         if (has_txstats) {
2014                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2015                 if (error) {
2016                         device_printf(sc->sc_dev,
2017                                       "TX stats DMA alloc failed\n");
2018                         return error;
2019                 }
2020         }
2021
2022 #undef TXRX_CTRL
2023
2024         return bwi_dma_mbuf_create(sc);
2025 }
2026
2027 static void
2028 bwi_dma_free(struct bwi_softc *sc)
2029 {
2030         if (sc->sc_txring_dtag != NULL) {
2031                 int i;
2032
2033                 for (i = 0; i < BWI_TX_NRING; ++i) {
2034                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2035
2036                         if (rd->rdata_desc != NULL) {
2037                                 bus_dmamap_unload(sc->sc_txring_dtag,
2038                                                   rd->rdata_dmap);
2039                                 bus_dmamem_free(sc->sc_txring_dtag,
2040                                                 rd->rdata_desc,
2041                                                 rd->rdata_dmap);
2042                         }
2043                 }
2044                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2045         }
2046
2047         if (sc->sc_rxring_dtag != NULL) {
2048                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2049
2050                 if (rd->rdata_desc != NULL) {
2051                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2052                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2053                                         rd->rdata_dmap);
2054                 }
2055                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2056         }
2057
2058         bwi_dma_txstats_free(sc);
2059         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2060
2061         if (sc->sc_parent_dtag != NULL)
2062                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2063 }
2064
2065 static int
2066 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2067                    struct bwi_ring_data *rd, bus_size_t size,
2068                    uint32_t txrx_ctrl)
2069 {
2070         int error;
2071
2072         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2073                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2074                                  &rd->rdata_dmap);
2075         if (error) {
2076                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2077                 return error;
2078         }
2079
2080         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2081                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2082                                 BUS_DMA_NOWAIT);
2083         if (error) {
2084                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2085                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2086                 rd->rdata_desc = NULL;
2087                 return error;
2088         }
2089
2090         rd->rdata_txrx_ctrl = txrx_ctrl;
2091         return 0;
2092 }
2093
2094 static int
2095 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2096                       bus_size_t desc_sz)
2097 {
2098         struct bwi_txstats_data *st;
2099         bus_size_t dma_size;
2100         int error;
2101
2102         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
2103         if (st == NULL) {
2104                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
2105                 return ENOMEM;
2106         }
2107         sc->sc_txstats = st;
2108
2109         /*
2110          * Create TX stats descriptor DMA stuffs
2111          */
2112         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2113
2114         error = bus_dma_tag_create(sc->sc_parent_dtag,
2115                                 BWI_RING_ALIGN,
2116                                 0,
2117                                 BUS_SPACE_MAXADDR,
2118                                 BUS_SPACE_MAXADDR,
2119                                 NULL, NULL,
2120                                 dma_size,
2121                                 1,
2122                                 BUS_SPACE_MAXSIZE_32BIT,
2123                                 BUS_DMA_ALLOCNOW,
2124                                 NULL, NULL,
2125                                 &st->stats_ring_dtag);
2126         if (error) {
2127                 device_printf(sc->sc_dev, "can't create txstats ring "
2128                               "DMA tag\n");
2129                 return error;
2130         }
2131
2132         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2133                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2134                                  &st->stats_ring_dmap);
2135         if (error) {
2136                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2137                               "DMA mem\n");
2138                 bus_dma_tag_destroy(st->stats_ring_dtag);
2139                 st->stats_ring_dtag = NULL;
2140                 return error;
2141         }
2142
2143         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2144                                 st->stats_ring, dma_size,
2145                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2146                                 BUS_DMA_NOWAIT);
2147         if (error) {
2148                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2149                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2150                                 st->stats_ring_dmap);
2151                 bus_dma_tag_destroy(st->stats_ring_dtag);
2152                 st->stats_ring_dtag = NULL;
2153                 return error;
2154         }
2155
2156         /*
2157          * Create TX stats DMA stuffs
2158          */
2159         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2160                            BWI_ALIGN);
2161
2162         error = bus_dma_tag_create(sc->sc_parent_dtag,
2163                                 BWI_ALIGN,
2164                                 0,
2165                                 BUS_SPACE_MAXADDR,
2166                                 BUS_SPACE_MAXADDR,
2167                                 NULL, NULL,
2168                                 dma_size,
2169                                 1,
2170                                 BUS_SPACE_MAXSIZE_32BIT,
2171                                 BUS_DMA_ALLOCNOW,
2172                                 NULL, NULL,
2173                                 &st->stats_dtag);
2174         if (error) {
2175                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2176                 return error;
2177         }
2178
2179         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2180                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2181                                  &st->stats_dmap);
2182         if (error) {
2183                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2184                 bus_dma_tag_destroy(st->stats_dtag);
2185                 st->stats_dtag = NULL;
2186                 return error;
2187         }
2188
2189         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2190                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2191                                 BUS_DMA_NOWAIT);
2192         if (error) {
2193                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2194                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2195                 bus_dma_tag_destroy(st->stats_dtag);
2196                 st->stats_dtag = NULL;
2197                 return error;
2198         }
2199
2200         st->stats_ctrl_base = ctrl_base;
2201         return 0;
2202 }
2203
2204 static void
2205 bwi_dma_txstats_free(struct bwi_softc *sc)
2206 {
2207         struct bwi_txstats_data *st;
2208
2209         if (sc->sc_txstats == NULL)
2210                 return;
2211         st = sc->sc_txstats;
2212
2213         if (st->stats_ring_dtag != NULL) {
2214                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2215                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2216                                 st->stats_ring_dmap);
2217                 bus_dma_tag_destroy(st->stats_ring_dtag);
2218         }
2219
2220         if (st->stats_dtag != NULL) {
2221                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2222                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2223                 bus_dma_tag_destroy(st->stats_dtag);
2224         }
2225
2226         free(st, M_DEVBUF);
2227 }
2228
2229 static void
2230 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2231 {
2232         KASSERT(nseg == 1, ("too many segments\n"));
2233         *((bus_addr_t *)arg) = seg->ds_addr;
2234 }
2235
2236 static int
2237 bwi_dma_mbuf_create(struct bwi_softc *sc)
2238 {
2239         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2240         int i, j, k, ntx, error;
2241
2242         /*
2243          * Create TX/RX mbuf DMA tag
2244          */
2245         error = bus_dma_tag_create(sc->sc_parent_dtag,
2246                                 1,
2247                                 0,
2248                                 BUS_SPACE_MAXADDR,
2249                                 BUS_SPACE_MAXADDR,
2250                                 NULL, NULL,
2251                                 MCLBYTES,
2252                                 1,
2253                                 BUS_SPACE_MAXSIZE_32BIT,
2254                                 BUS_DMA_ALLOCNOW,
2255                                 NULL, NULL,
2256                                 &sc->sc_buf_dtag);
2257         if (error) {
2258                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2259                 return error;
2260         }
2261
2262         ntx = 0;
2263
2264         /*
2265          * Create TX mbuf DMA map
2266          */
2267         for (i = 0; i < BWI_TX_NRING; ++i) {
2268                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2269
2270                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2271                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2272                                                   &tbd->tbd_buf[j].tb_dmap);
2273                         if (error) {
2274                                 device_printf(sc->sc_dev, "can't create "
2275                                               "%dth tbd, %dth DMA map\n", i, j);
2276
2277                                 ntx = i;
2278                                 for (k = 0; k < j; ++k) {
2279                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2280                                                 tbd->tbd_buf[k].tb_dmap);
2281                                 }
2282                                 goto fail;
2283                         }
2284                 }
2285         }
2286         ntx = BWI_TX_NRING;
2287
2288         /*
2289          * Create RX mbuf DMA map and a spare DMA map
2290          */
2291         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2292                                   &rbd->rbd_tmp_dmap);
2293         if (error) {
2294                 device_printf(sc->sc_dev,
2295                               "can't create spare RX buf DMA map\n");
2296                 goto fail;
2297         }
2298
2299         for (j = 0; j < BWI_RX_NDESC; ++j) {
2300                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2301                                           &rbd->rbd_buf[j].rb_dmap);
2302                 if (error) {
2303                         device_printf(sc->sc_dev, "can't create %dth "
2304                                       "RX buf DMA map\n", j);
2305
2306                         for (k = 0; k < j; ++k) {
2307                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2308                                         rbd->rbd_buf[j].rb_dmap);
2309                         }
2310                         bus_dmamap_destroy(sc->sc_buf_dtag,
2311                                            rbd->rbd_tmp_dmap);
2312                         goto fail;
2313                 }
2314         }
2315
2316         return 0;
2317 fail:
2318         bwi_dma_mbuf_destroy(sc, ntx, 0);
2319         return error;
2320 }
2321
2322 static void
2323 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2324 {
2325         int i, j;
2326
2327         if (sc->sc_buf_dtag == NULL)
2328                 return;
2329
2330         for (i = 0; i < ntx; ++i) {
2331                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2332
2333                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2334                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2335
2336                         if (tb->tb_mbuf != NULL) {
2337                                 bus_dmamap_unload(sc->sc_buf_dtag,
2338                                                   tb->tb_dmap);
2339                                 m_freem(tb->tb_mbuf);
2340                         }
2341                         if (tb->tb_ni != NULL)
2342                                 ieee80211_free_node(tb->tb_ni);
2343                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2344                 }
2345         }
2346
2347         if (nrx) {
2348                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2349
2350                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2351                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2352                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2353
2354                         if (rb->rb_mbuf != NULL) {
2355                                 bus_dmamap_unload(sc->sc_buf_dtag,
2356                                                   rb->rb_dmap);
2357                                 m_freem(rb->rb_mbuf);
2358                         }
2359                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2360                 }
2361         }
2362
2363         bus_dma_tag_destroy(sc->sc_buf_dtag);
2364         sc->sc_buf_dtag = NULL;
2365 }
2366
2367 static void
2368 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2369 {
2370         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2371 }
2372
2373 static void
2374 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2375 {
2376         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2377 }
2378
2379 static int
2380 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2381 {
2382         struct bwi_ring_data *rd;
2383         struct bwi_txbuf_data *tbd;
2384         uint32_t val, addr_hi, addr_lo;
2385
2386         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2387         rd = &sc->sc_tx_rdata[ring_idx];
2388         tbd = &sc->sc_tx_bdata[ring_idx];
2389
2390         tbd->tbd_idx = 0;
2391         tbd->tbd_used = 0;
2392
2393         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2394         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2395                         BUS_DMASYNC_PREWRITE);
2396
2397         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2398         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2399
2400         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2401               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2402                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2403         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2404
2405         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2406               BWI_TXRX32_CTRL_ENABLE;
2407         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2408
2409         return 0;
2410 }
2411
2412 static void
2413 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2414                        bus_addr_t paddr, int hdr_size, int ndesc)
2415 {
2416         uint32_t val, addr_hi, addr_lo;
2417
2418         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2419         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2420
2421         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2422               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2423                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2424         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2425
2426         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2427               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2428               BWI_TXRX32_CTRL_ENABLE;
2429         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2430
2431         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2432                     (ndesc - 1) * sizeof(struct bwi_desc32));
2433 }
2434
2435 static int
2436 bwi_init_rx_ring32(struct bwi_softc *sc)
2437 {
2438         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2439         int i, error;
2440
2441         sc->sc_rx_bdata.rbd_idx = 0;
2442
2443         for (i = 0; i < BWI_RX_NDESC; ++i) {
2444                 error = bwi_newbuf(sc, i, 1);
2445                 if (error) {
2446                         device_printf(sc->sc_dev,
2447                                   "can't allocate %dth RX buffer\n", i);
2448                         return error;
2449                 }
2450         }
2451         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2452                         BUS_DMASYNC_PREWRITE);
2453
2454         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2455                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2456         return 0;
2457 }
2458
2459 static int
2460 bwi_init_txstats32(struct bwi_softc *sc)
2461 {
2462         struct bwi_txstats_data *st = sc->sc_txstats;
2463         bus_addr_t stats_paddr;
2464         int i;
2465
2466         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2467         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2468
2469         st->stats_idx = 0;
2470
2471         stats_paddr = st->stats_paddr;
2472         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2473                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2474                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2475                 stats_paddr += sizeof(struct bwi_txstats);
2476         }
2477         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2478                         BUS_DMASYNC_PREWRITE);
2479
2480         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2481                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2482         return 0;
2483 }
2484
2485 static void
2486 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2487                     int buf_len)
2488 {
2489         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2490
2491         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2492         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2493                          paddr, buf_len, 0);
2494 }
2495
2496 static void
2497 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2498                     int buf_idx, bus_addr_t paddr, int buf_len)
2499 {
2500         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
2501         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2502                          paddr, buf_len, 1);
2503 }
2504
2505 static int
2506 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2507 {
2508         /* TODO:64 */
2509         return EOPNOTSUPP;
2510 }
2511
2512 static int
2513 bwi_init_rx_ring64(struct bwi_softc *sc)
2514 {
2515         /* TODO:64 */
2516         return EOPNOTSUPP;
2517 }
2518
2519 static int
2520 bwi_init_txstats64(struct bwi_softc *sc)
2521 {
2522         /* TODO:64 */
2523         return EOPNOTSUPP;
2524 }
2525
2526 static void
2527 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2528                     int buf_len)
2529 {
2530         /* TODO:64 */
2531 }
2532
2533 static void
2534 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2535                     int buf_idx, bus_addr_t paddr, int buf_len)
2536 {
2537         /* TODO:64 */
2538 }
2539
2540 static void
2541 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2542                  bus_size_t mapsz __unused, int error)
2543 {
2544         if (!error) {
2545                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2546                 *((bus_addr_t *)arg) = seg->ds_addr;
2547         }
2548 }
2549
2550 static int
2551 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2552 {
2553         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2554         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2555         struct bwi_rxbuf_hdr *hdr;
2556         bus_dmamap_t map;
2557         bus_addr_t paddr;
2558         struct mbuf *m;
2559         int error;
2560
2561         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2562
2563         m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
2564         if (m == NULL) {
2565                 error = ENOBUFS;
2566
2567                 /*
2568                  * If the NIC is up and running, we need to:
2569                  * - Clear RX buffer's header.
2570                  * - Restore RX descriptor settings.
2571                  */
2572                 if (init)
2573                         return error;
2574                 else
2575                         goto back;
2576         }
2577         m->m_len = m->m_pkthdr.len = MCLBYTES;
2578
2579         /*
2580          * Try to load RX buf into temporary DMA map
2581          */
2582         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2583                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
2584         if (error) {
2585                 m_freem(m);
2586
2587                 /*
2588                  * See the comment above
2589                  */
2590                 if (init)
2591                         return error;
2592                 else
2593                         goto back;
2594         }
2595
2596         if (!init)
2597                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2598         rxbuf->rb_mbuf = m;
2599         rxbuf->rb_paddr = paddr;
2600
2601         /*
2602          * Swap RX buf's DMA map with the loaded temporary one
2603          */
2604         map = rxbuf->rb_dmap;
2605         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2606         rbd->rbd_tmp_dmap = map;
2607
2608 back:
2609         /*
2610          * Clear RX buf header
2611          */
2612         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2613         bzero(hdr, sizeof(*hdr));
2614         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2615
2616         /*
2617          * Setup RX buf descriptor
2618          */
2619         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2620                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2621         return error;
2622 }
2623
2624 static void
2625 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2626                     const uint8_t *addr)
2627 {
2628         int i;
2629
2630         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2631                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2632
2633         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2634                 uint16_t addr_val;
2635
2636                 addr_val = (uint16_t)addr[i * 2] |
2637                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2638                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2639         }
2640 }
2641
2642 static int
2643 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2644 {
2645         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2646         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2647         struct ifnet *ifp = sc->sc_ifp;
2648         struct ieee80211com *ic = ifp->if_l2com;
2649         int idx, rx_data = 0;
2650
2651         idx = rbd->rbd_idx;
2652         while (idx != end_idx) {
2653                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2654                 struct bwi_rxbuf_hdr *hdr;
2655                 struct ieee80211_frame_min *wh;
2656                 struct ieee80211_node *ni;
2657                 struct mbuf *m;
2658                 const void *plcp;
2659                 uint16_t flags2;
2660                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
2661
2662                 m = rb->rb_mbuf;
2663                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2664                                 BUS_DMASYNC_POSTREAD);
2665
2666                 if (bwi_newbuf(sc, idx, 0)) {
2667                         ifp->if_ierrors++;
2668                         goto next;
2669                 }
2670
2671                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2672                 flags2 = le16toh(hdr->rxh_flags2);
2673
2674                 hdr_extra = 0;
2675                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2676                         hdr_extra = 2;
2677                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2678
2679                 buflen = le16toh(hdr->rxh_buflen);
2680                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2681                         if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
2682                                   __func__, hdr_extra);
2683                         ifp->if_ierrors++;
2684                         m_freem(m);
2685                         goto next;
2686                 }
2687
2688                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2689                 rssi = bwi_calc_rssi(sc, hdr);
2690                 noise = bwi_calc_noise(sc);
2691
2692                 m->m_pkthdr.rcvif = ifp;
2693                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2694                 m_adj(m, sizeof(*hdr) + wh_ofs);
2695
2696                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2697                         rate = bwi_ofdm_plcp2rate(plcp);
2698                 else
2699                         rate = bwi_ds_plcp2rate(plcp);
2700
2701                 /* RX radio tap */
2702                 if (ieee80211_radiotap_active(ic))
2703                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi, noise);
2704
2705                 m_adj(m, -IEEE80211_CRC_LEN);
2706
2707                 BWI_UNLOCK(sc);
2708
2709                 wh = mtod(m, struct ieee80211_frame_min *);
2710                 ni = ieee80211_find_rxnode(ic, wh);
2711                 if (ni != NULL) {
2712                         type = ieee80211_input(ni, m, rssi - noise, noise);
2713                         ieee80211_free_node(ni);
2714                 } else
2715                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
2716                 if (type == IEEE80211_FC0_TYPE_DATA) {
2717                         rx_data = 1;
2718                         sc->sc_rx_rate = rate;
2719                 }
2720
2721                 BWI_LOCK(sc);
2722 next:
2723                 idx = (idx + 1) % BWI_RX_NDESC;
2724
2725                 if (sc->sc_flags & BWI_F_STOP) {
2726                         /*
2727                          * Take the fast lane, don't do
2728                          * any damage to softc
2729                          */
2730                         return -1;
2731                 }
2732         }
2733
2734         rbd->rbd_idx = idx;
2735         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2736                         BUS_DMASYNC_PREWRITE);
2737
2738         return rx_data;
2739 }
2740
2741 static int
2742 bwi_rxeof32(struct bwi_softc *sc)
2743 {
2744         uint32_t val, rx_ctrl;
2745         int end_idx, rx_data;
2746
2747         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2748
2749         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2750         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2751                   sizeof(struct bwi_desc32);
2752
2753         rx_data = bwi_rxeof(sc, end_idx);
2754         if (rx_data >= 0) {
2755                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2756                             end_idx * sizeof(struct bwi_desc32));
2757         }
2758         return rx_data;
2759 }
2760
2761 static int
2762 bwi_rxeof64(struct bwi_softc *sc)
2763 {
2764         /* TODO:64 */
2765         return 0;
2766 }
2767
2768 static void
2769 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2770 {
2771         int i;
2772
2773         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2774
2775 #define NRETRY 10
2776
2777         for (i = 0; i < NRETRY; ++i) {
2778                 uint32_t status;
2779
2780                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2781                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2782                     BWI_RX32_STATUS_STATE_DISABLED)
2783                         break;
2784
2785                 DELAY(1000);
2786         }
2787         if (i == NRETRY)
2788                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
2789
2790 #undef NRETRY
2791
2792         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2793 }
2794
2795 static void
2796 bwi_free_txstats32(struct bwi_softc *sc)
2797 {
2798         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2799 }
2800
2801 static void
2802 bwi_free_rx_ring32(struct bwi_softc *sc)
2803 {
2804         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2805         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2806         int i;
2807
2808         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2809
2810         for (i = 0; i < BWI_RX_NDESC; ++i) {
2811                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2812
2813                 if (rb->rb_mbuf != NULL) {
2814                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2815                         m_freem(rb->rb_mbuf);
2816                         rb->rb_mbuf = NULL;
2817                 }
2818         }
2819 }
2820
2821 static void
2822 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2823 {
2824         struct bwi_ring_data *rd;
2825         struct bwi_txbuf_data *tbd;
2826         struct ifnet *ifp = sc->sc_ifp;
2827         uint32_t state, val;
2828         int i;
2829
2830         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2831         rd = &sc->sc_tx_rdata[ring_idx];
2832         tbd = &sc->sc_tx_bdata[ring_idx];
2833
2834 #define NRETRY 10
2835
2836         for (i = 0; i < NRETRY; ++i) {
2837                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2838                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2839                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2840                     state == BWI_TX32_STATUS_STATE_IDLE ||
2841                     state == BWI_TX32_STATUS_STATE_STOPPED)
2842                         break;
2843
2844                 DELAY(1000);
2845         }
2846         if (i == NRETRY) {
2847                 if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
2848                           __func__, ring_idx);
2849         }
2850
2851         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2852         for (i = 0; i < NRETRY; ++i) {
2853                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2854                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2855                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2856                         break;
2857
2858                 DELAY(1000);
2859         }
2860         if (i == NRETRY)
2861                 if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
2862                      __func__, ring_idx);
2863
2864 #undef NRETRY
2865
2866         DELAY(1000);
2867
2868         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2869
2870         for (i = 0; i < BWI_TX_NDESC; ++i) {
2871                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2872
2873                 if (tb->tb_mbuf != NULL) {
2874                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2875                         m_freem(tb->tb_mbuf);
2876                         tb->tb_mbuf = NULL;
2877                 }
2878                 if (tb->tb_ni != NULL) {
2879                         ieee80211_free_node(tb->tb_ni);
2880                         tb->tb_ni = NULL;
2881                 }
2882         }
2883 }
2884
2885 static void
2886 bwi_free_txstats64(struct bwi_softc *sc)
2887 {
2888         /* TODO:64 */
2889 }
2890
2891 static void
2892 bwi_free_rx_ring64(struct bwi_softc *sc)
2893 {
2894         /* TODO:64 */
2895 }
2896
2897 static void
2898 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2899 {
2900         /* TODO:64 */
2901 }
2902
2903 /* XXX does not belong here */
2904 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
2905 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
2906
2907 static __inline void
2908 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
2909 {
2910         uint32_t plcp;
2911
2912         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
2913                     IEEE80211_OFDM_PLCP_RATE_MASK) |
2914                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
2915         *plcp0 = htole32(plcp);
2916 }
2917
2918 static __inline void
2919 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
2920                    uint8_t rate)
2921 {
2922         int len, service, pkt_bitlen;
2923
2924         pkt_bitlen = pkt_len * NBBY;
2925         len = howmany(pkt_bitlen * 2, rate);
2926
2927         service = IEEE80211_PLCP_SERVICE_LOCKED;
2928         if (rate == (11 * 2)) {
2929                 int pkt_bitlen1;
2930
2931                 /*
2932                  * PLCP service field needs to be adjusted,
2933                  * if TX rate is 11Mbytes/s
2934                  */
2935                 pkt_bitlen1 = len * 11;
2936                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
2937                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
2938         }
2939
2940         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
2941         plcp->i_service = service;
2942         plcp->i_length = htole16(len);
2943         /* NOTE: do NOT touch i_crc */
2944 }
2945
2946 static __inline void
2947 bwi_plcp_header(const struct ieee80211_rate_table *rt,
2948         void *plcp, int pkt_len, uint8_t rate)
2949 {
2950         enum ieee80211_phytype modtype;
2951
2952         /*
2953          * Assume caller has zeroed 'plcp'
2954          */
2955         modtype = ieee80211_rate2phytype(rt, rate);
2956         if (modtype == IEEE80211_T_OFDM)
2957                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
2958         else if (modtype == IEEE80211_T_DS)
2959                 bwi_ds_plcp_header(plcp, pkt_len, rate);
2960         else
2961                 panic("unsupport modulation type %u\n", modtype);
2962 }
2963
2964 static int
2965 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2966           struct ieee80211_node *ni)
2967 {
2968         struct ieee80211vap *vap = ni->ni_vap;
2969         struct ifnet *ifp = sc->sc_ifp;
2970         struct ieee80211com *ic = ifp->if_l2com;
2971         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2972         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2973         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
2974         struct bwi_mac *mac;
2975         struct bwi_txbuf_hdr *hdr;
2976         struct ieee80211_frame *wh;
2977         const struct ieee80211_txparam *tp;
2978         uint8_t rate, rate_fb;
2979         uint32_t mac_ctrl;
2980         uint16_t phy_ctrl;
2981         bus_addr_t paddr;
2982         int type, ismcast, pkt_len, error, rix;
2983 #if 0
2984         const uint8_t *p;
2985         int i;
2986 #endif
2987
2988         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
2989             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
2990         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2991
2992         wh = mtod(m, struct ieee80211_frame *);
2993         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2994         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2995
2996         /* Get 802.11 frame len before prepending TX header */
2997         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
2998
2999         /*
3000          * Find TX rate
3001          */
3002         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
3003         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
3004                 rate = rate_fb = tp->mgmtrate;
3005         } else if (ismcast) {
3006                 rate = rate_fb = tp->mcastrate;
3007         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
3008                 rate = rate_fb = tp->ucastrate;
3009         } else {
3010                 rix = ieee80211_amrr_choose(ni, &BWI_NODE(ni)->amn);
3011                 rate = ni->ni_txrate;
3012
3013                 if (rix > 0) {
3014                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
3015                                   IEEE80211_RATE_VAL;
3016                 } else {
3017                         rate_fb = rate;
3018                 }
3019         }
3020         tb->tb_rate[0] = rate;
3021         tb->tb_rate[1] = rate_fb;
3022         sc->sc_tx_rate = rate;
3023
3024         /*
3025          * TX radio tap
3026          */
3027         if (ieee80211_radiotap_active_vap(vap)) {
3028                 sc->sc_tx_th.wt_flags = 0;
3029                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3030                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3031                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
3032                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3033                     rate != (1 * 2)) {
3034                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3035                 }
3036                 sc->sc_tx_th.wt_rate = rate;
3037
3038                 ieee80211_radiotap_tx(vap, m);
3039         }
3040
3041         /*
3042          * Setup the embedded TX header
3043          */
3044         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
3045         if (m == NULL) {
3046                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3047                 return ENOBUFS;
3048         }
3049         hdr = mtod(m, struct bwi_txbuf_hdr *);
3050
3051         bzero(hdr, sizeof(*hdr));
3052
3053         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3054         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3055
3056         if (!ismcast) {
3057                 uint16_t dur;
3058
3059                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
3060                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
3061
3062                 hdr->txh_fb_duration = htole16(dur);
3063         }
3064
3065         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3066                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3067
3068         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3069         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3070
3071         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3072                              BWI_TXH_PHY_C_ANTMODE_MASK);
3073         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
3074                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3075         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3076                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3077
3078         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3079         if (!ismcast)
3080                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3081         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
3082                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3083
3084         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3085         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3086
3087         /* Catch any further usage */
3088         hdr = NULL;
3089         wh = NULL;
3090
3091         /* DMA load */
3092         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3093                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3094         if (error && error != EFBIG) {
3095                 if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3096                     __func__, error);
3097                 goto back;
3098         }
3099
3100         if (error) {    /* error == EFBIG */
3101                 struct mbuf *m_new;
3102
3103                 m_new = m_defrag(m, M_DONTWAIT);
3104                 if (m_new == NULL) {
3105                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3106                             __func__);
3107                         error = ENOBUFS;
3108                         goto back;
3109                 } else {
3110                         m = m_new;
3111                 }
3112
3113                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3114                                              bwi_dma_buf_addr, &paddr,
3115                                              BUS_DMA_NOWAIT);
3116                 if (error) {
3117                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3118                             __func__, error);
3119                         goto back;
3120                 }
3121         }
3122         error = 0;
3123
3124         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3125
3126         tb->tb_mbuf = m;
3127         tb->tb_ni = ni;
3128
3129 #if 0
3130         p = mtod(m, const uint8_t *);
3131         for (i = 0; i < m->m_pkthdr.len; ++i) {
3132                 if (i != 0 && i % 8 == 0)
3133                         printf("\n");
3134                 printf("%02x ", p[i]);
3135         }
3136         printf("\n");
3137 #endif
3138         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3139                 idx, pkt_len, m->m_pkthdr.len);
3140
3141         /* Setup TX descriptor */
3142         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3143         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3144                         BUS_DMASYNC_PREWRITE);
3145
3146         /* Kick start */
3147         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3148
3149 back:
3150         if (error)
3151                 m_freem(m);
3152         return error;
3153 }
3154
3155 static int
3156 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
3157           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
3158 {
3159         struct ifnet *ifp = sc->sc_ifp;
3160         struct ieee80211vap *vap = ni->ni_vap;
3161         struct ieee80211com *ic = ni->ni_ic;
3162         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3163         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3164         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3165         struct bwi_mac *mac;
3166         struct bwi_txbuf_hdr *hdr;
3167         struct ieee80211_frame *wh;
3168         uint8_t rate, rate_fb;
3169         uint32_t mac_ctrl;
3170         uint16_t phy_ctrl;
3171         bus_addr_t paddr;
3172         int ismcast, pkt_len, error;
3173
3174         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3175             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3176         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3177
3178         wh = mtod(m, struct ieee80211_frame *);
3179         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
3180
3181         /* Get 802.11 frame len before prepending TX header */
3182         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3183
3184         /*
3185          * Find TX rate
3186          */
3187         rate = params->ibp_rate0;
3188         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
3189                 /* XXX fall back to mcast/mgmt rate? */
3190                 m_freem(m);
3191                 return EINVAL;
3192         }
3193         if (params->ibp_try1 != 0) {
3194                 rate_fb = params->ibp_rate1;
3195                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
3196                         /* XXX fall back to rate0? */
3197                         m_freem(m);
3198                         return EINVAL;
3199                 }
3200         } else
3201                 rate_fb = rate;
3202         tb->tb_rate[0] = rate;
3203         tb->tb_rate[1] = rate_fb;
3204         sc->sc_tx_rate = rate;
3205
3206         /*
3207          * TX radio tap
3208          */
3209         if (ieee80211_radiotap_active_vap(vap)) {
3210                 sc->sc_tx_th.wt_flags = 0;
3211                 /* XXX IEEE80211_BPF_CRYPTO */
3212                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3213                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3214                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3215                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3216                 sc->sc_tx_th.wt_rate = rate;
3217
3218                 ieee80211_radiotap_tx(vap, m);
3219         }
3220
3221         /*
3222          * Setup the embedded TX header
3223          */
3224         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
3225         if (m == NULL) {
3226                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3227                 return ENOBUFS;
3228         }
3229         hdr = mtod(m, struct bwi_txbuf_hdr *);
3230
3231         bzero(hdr, sizeof(*hdr));
3232
3233         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3234         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3235
3236         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3237         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
3238                 uint16_t dur;
3239
3240                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
3241
3242                 hdr->txh_fb_duration = htole16(dur);
3243                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3244         }
3245
3246         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3247                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3248
3249         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3250         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3251
3252         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3253                              BWI_TXH_PHY_C_ANTMODE_MASK);
3254         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
3255                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3256                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3257         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3258                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3259
3260         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3261         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3262
3263         /* Catch any further usage */
3264         hdr = NULL;
3265         wh = NULL;
3266
3267         /* DMA load */
3268         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3269                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3270         if (error != 0) {
3271                 struct mbuf *m_new;
3272
3273                 if (error != EFBIG) {
3274                         if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3275                             __func__, error);
3276                         goto back;
3277                 }
3278                 m_new = m_defrag(m, M_DONTWAIT);
3279                 if (m_new == NULL) {
3280                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3281                             __func__);
3282                         error = ENOBUFS;
3283                         goto back;
3284                 }
3285                 m = m_new;
3286                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3287                                              bwi_dma_buf_addr, &paddr,
3288                                              BUS_DMA_NOWAIT);
3289                 if (error) {
3290                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3291                             __func__, error);
3292                         goto back;
3293                 }
3294         }
3295
3296         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3297
3298         tb->tb_mbuf = m;
3299         tb->tb_ni = ni;
3300
3301         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3302                 idx, pkt_len, m->m_pkthdr.len);
3303
3304         /* Setup TX descriptor */
3305         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3306         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3307                         BUS_DMASYNC_PREWRITE);
3308
3309         /* Kick start */
3310         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3311 back:
3312         if (error)
3313                 m_freem(m);
3314         return error;
3315 }
3316
3317 static void
3318 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3319 {
3320         idx = (idx + 1) % BWI_TX_NDESC;
3321         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3322                     idx * sizeof(struct bwi_desc32));
3323 }
3324
3325 static void
3326 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3327 {
3328         /* TODO:64 */
3329 }
3330
3331 static void
3332 bwi_txeof_status32(struct bwi_softc *sc)
3333 {
3334         struct ifnet *ifp = sc->sc_ifp;
3335         uint32_t val, ctrl_base;
3336         int end_idx;
3337
3338         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3339
3340         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3341         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3342                   sizeof(struct bwi_desc32);
3343
3344         bwi_txeof_status(sc, end_idx);
3345
3346         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3347                     end_idx * sizeof(struct bwi_desc32));
3348
3349         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3350                 ifp->if_start(ifp);
3351 }
3352
3353 static void
3354 bwi_txeof_status64(struct bwi_softc *sc)
3355 {
3356         /* TODO:64 */
3357 }
3358
3359 static void
3360 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3361 {
3362         struct ifnet *ifp = sc->sc_ifp;
3363         struct bwi_txbuf_data *tbd;
3364         struct bwi_txbuf *tb;
3365         int ring_idx, buf_idx;
3366         struct ieee80211_node *ni;
3367
3368         if (tx_id == 0) {
3369                 if_printf(ifp, "%s: zero tx id\n", __func__);
3370                 return;
3371         }
3372
3373         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3374         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3375
3376         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
3377         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
3378
3379         tbd = &sc->sc_tx_bdata[ring_idx];
3380         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
3381         tbd->tbd_used--;
3382
3383         tb = &tbd->tbd_buf[buf_idx];
3384         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3385                 "acked %d, data_txcnt %d, ni %p\n",
3386                 buf_idx, acked, data_txcnt, tb->tb_ni);
3387
3388         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3389
3390         ni = tb->tb_ni;
3391         if (tb->tb_ni != NULL) {
3392                 struct bwi_node *bn = (struct bwi_node *) tb->tb_ni;
3393                 const struct bwi_txbuf_hdr *hdr =
3394                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
3395
3396                 /* NB: update rate control only for unicast frames */
3397                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
3398                         /*
3399                          * Feed back 'acked and data_txcnt'.  Note that the
3400                          * generic AMRR code only understands one tx rate
3401                          * and the estimator doesn't handle real retry counts
3402                          * well so to avoid over-aggressive downshifting we
3403                          * treat any number of retries as "1".
3404                          */
3405                         ieee80211_amrr_tx_complete(&bn->amn, acked,
3406                             data_txcnt > 1);
3407                 }
3408
3409                 /*
3410                  * Do any tx complete callback.  Note this must
3411                  * be done before releasing the node reference.
3412                  */
3413                 if (tb->tb_mbuf->m_flags & M_TXCB)
3414                         ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
3415
3416                 ieee80211_free_node(tb->tb_ni);
3417                 tb->tb_ni = NULL;
3418         }
3419         m_freem(tb->tb_mbuf);
3420         tb->tb_mbuf = NULL;
3421
3422         if (tbd->tbd_used == 0)
3423                 ifp->if_timer = 0;
3424
3425         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3426 }
3427
3428 static void
3429 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3430 {
3431         struct bwi_txstats_data *st = sc->sc_txstats;
3432         int idx;
3433
3434         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3435
3436         idx = st->stats_idx;
3437         while (idx != end_idx) {
3438                 const struct bwi_txstats *stats = &st->stats[idx];
3439
3440                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3441                         int data_txcnt;
3442
3443                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3444                                                 BWI_TXS_TXCNT_DATA);
3445                         _bwi_txeof(sc, le16toh(stats->txs_id),
3446                                    stats->txs_flags & BWI_TXS_F_ACKED,
3447                                    data_txcnt);
3448                 }
3449                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3450         }
3451         st->stats_idx = idx;
3452 }
3453
3454 static void
3455 bwi_txeof(struct bwi_softc *sc)
3456 {
3457         struct ifnet *ifp = sc->sc_ifp;
3458
3459         for (;;) {
3460                 uint32_t tx_status0, tx_status1;
3461                 uint16_t tx_id;
3462                 int data_txcnt;
3463
3464                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3465                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3466                         break;
3467                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3468
3469                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3470                 data_txcnt = __SHIFTOUT(tx_status0,
3471                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3472
3473                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3474                         continue;
3475
3476                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
3477                     data_txcnt);
3478         }
3479
3480         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3481                 ifp->if_start(ifp);
3482 }
3483
3484 static int
3485 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3486 {
3487         bwi_power_on(sc, 1);
3488         return bwi_set_clock_mode(sc, clk_mode);
3489 }
3490
3491 static void
3492 bwi_bbp_power_off(struct bwi_softc *sc)
3493 {
3494         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3495         bwi_power_off(sc, 1);
3496 }
3497
3498 static int
3499 bwi_get_pwron_delay(struct bwi_softc *sc)
3500 {
3501         struct bwi_regwin *com, *old;
3502         struct bwi_clock_freq freq;
3503         uint32_t val;
3504         int error;
3505
3506         com = &sc->sc_com_regwin;
3507         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
3508
3509         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3510                 return 0;
3511
3512         error = bwi_regwin_switch(sc, com, &old);
3513         if (error)
3514                 return error;
3515
3516         bwi_get_clock_freq(sc, &freq);
3517
3518         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3519         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3520         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3521
3522         return bwi_regwin_switch(sc, old, NULL);
3523 }
3524
3525 static int
3526 bwi_bus_attach(struct bwi_softc *sc)
3527 {
3528         struct bwi_regwin *bus, *old;
3529         int error;
3530
3531         bus = &sc->sc_bus_regwin;
3532
3533         error = bwi_regwin_switch(sc, bus, &old);
3534         if (error)
3535                 return error;
3536
3537         if (!bwi_regwin_is_enabled(sc, bus))
3538                 bwi_regwin_enable(sc, bus, 0);
3539
3540         /* Disable interripts */
3541         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3542
3543         return bwi_regwin_switch(sc, old, NULL);
3544 }
3545
3546 static const char *
3547 bwi_regwin_name(const struct bwi_regwin *rw)
3548 {
3549         switch (rw->rw_type) {
3550         case BWI_REGWIN_T_COM:
3551                 return "COM";
3552         case BWI_REGWIN_T_BUSPCI:
3553                 return "PCI";
3554         case BWI_REGWIN_T_MAC:
3555                 return "MAC";
3556         case BWI_REGWIN_T_BUSPCIE:
3557                 return "PCIE";
3558         }
3559         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3560         return NULL;
3561 }
3562
3563 static uint32_t
3564 bwi_regwin_disable_bits(struct bwi_softc *sc)
3565 {
3566         uint32_t busrev;
3567
3568         /* XXX cache this */
3569         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3570         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3571                 "bus rev %u\n", busrev);
3572
3573         if (busrev == BWI_BUSREV_0)
3574                 return BWI_STATE_LO_DISABLE1;
3575         else if (busrev == BWI_BUSREV_1)
3576                 return BWI_STATE_LO_DISABLE2;
3577         else
3578                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3579 }
3580
3581 int
3582 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3583 {
3584         uint32_t val, disable_bits;
3585
3586         disable_bits = bwi_regwin_disable_bits(sc);
3587         val = CSR_READ_4(sc, BWI_STATE_LO);
3588
3589         if ((val & (BWI_STATE_LO_CLOCK |
3590                     BWI_STATE_LO_RESET |
3591                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3592                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3593                         bwi_regwin_name(rw));
3594                 return 1;
3595         } else {
3596                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3597                         bwi_regwin_name(rw));
3598                 return 0;
3599         }
3600 }
3601
3602 void
3603 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3604 {
3605         uint32_t state_lo, disable_bits;
3606         int i;
3607
3608         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3609
3610         /*
3611          * If current regwin is in 'reset' state, it was already disabled.
3612          */
3613         if (state_lo & BWI_STATE_LO_RESET) {
3614                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3615                         "%s was already disabled\n", bwi_regwin_name(rw));
3616                 return;
3617         }
3618
3619         disable_bits = bwi_regwin_disable_bits(sc);
3620
3621         /*
3622          * Disable normal clock
3623          */
3624         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3625         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3626
3627         /*
3628          * Wait until normal clock is disabled
3629          */
3630 #define NRETRY  1000
3631         for (i = 0; i < NRETRY; ++i) {
3632                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3633                 if (state_lo & disable_bits)
3634                         break;
3635                 DELAY(10);
3636         }
3637         if (i == NRETRY) {
3638                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3639                               bwi_regwin_name(rw));
3640         }
3641
3642         for (i = 0; i < NRETRY; ++i) {
3643                 uint32_t state_hi;
3644
3645                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3646                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3647                         break;
3648                 DELAY(10);
3649         }
3650         if (i == NRETRY) {
3651                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3652                               bwi_regwin_name(rw));
3653         }
3654 #undef NRETRY
3655
3656         /*
3657          * Reset and disable regwin with gated clock
3658          */
3659         state_lo = BWI_STATE_LO_RESET | disable_bits |
3660                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3661                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3662         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3663
3664         /* Flush pending bus write */
3665         CSR_READ_4(sc, BWI_STATE_LO);
3666         DELAY(1);
3667
3668         /* Reset and disable regwin */
3669         state_lo = BWI_STATE_LO_RESET | disable_bits |
3670                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3671         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3672
3673         /* Flush pending bus write */
3674         CSR_READ_4(sc, BWI_STATE_LO);
3675         DELAY(1);
3676 }
3677
3678 void
3679 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3680 {
3681         uint32_t state_lo, state_hi, imstate;
3682
3683         bwi_regwin_disable(sc, rw, flags);
3684
3685         /* Reset regwin with gated clock */
3686         state_lo = BWI_STATE_LO_RESET |
3687                    BWI_STATE_LO_CLOCK |
3688                    BWI_STATE_LO_GATED_CLOCK |
3689                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3690         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3691
3692         /* Flush pending bus write */
3693         CSR_READ_4(sc, BWI_STATE_LO);
3694         DELAY(1);
3695
3696         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3697         if (state_hi & BWI_STATE_HI_SERROR)
3698                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3699
3700         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3701         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3702                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3703                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3704         }
3705
3706         /* Enable regwin with gated clock */
3707         state_lo = BWI_STATE_LO_CLOCK |
3708                    BWI_STATE_LO_GATED_CLOCK |
3709                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3710         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3711
3712         /* Flush pending bus write */
3713         CSR_READ_4(sc, BWI_STATE_LO);
3714         DELAY(1);
3715
3716         /* Enable regwin with normal clock */
3717         state_lo = BWI_STATE_LO_CLOCK |
3718                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3719         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3720
3721         /* Flush pending bus write */
3722         CSR_READ_4(sc, BWI_STATE_LO);
3723         DELAY(1);
3724 }
3725
3726 static void
3727 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3728 {
3729         struct ifnet *ifp = sc->sc_ifp;
3730         struct bwi_mac *mac;
3731         struct bwi_myaddr_bssid buf;
3732         const uint8_t *p;
3733         uint32_t val;
3734         int n, i;
3735
3736         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3737             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3738         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3739
3740         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3741
3742         bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
3743         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3744
3745         n = sizeof(buf) / sizeof(val);
3746         p = (const uint8_t *)&buf;
3747         for (i = 0; i < n; ++i) {
3748                 int j;
3749
3750                 val = 0;
3751                 for (j = 0; j < sizeof(val); ++j)
3752                         val |= ((uint32_t)(*p++)) << (j * 8);
3753
3754                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3755         }
3756 }
3757
3758 static void
3759 bwi_updateslot(struct ifnet *ifp)
3760 {
3761         struct bwi_softc *sc = ifp->if_softc;
3762         struct ieee80211com *ic = ifp->if_l2com;
3763         struct bwi_mac *mac;
3764
3765         BWI_LOCK(sc);
3766         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
3767                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
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_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3774         }
3775         BWI_UNLOCK(sc);
3776 }
3777
3778 static void
3779 bwi_calibrate(void *xsc)
3780 {
3781         struct bwi_softc *sc = xsc;
3782 #ifdef INVARIANTS
3783         struct ifnet *ifp = sc->sc_ifp;
3784         struct ieee80211com *ic = ifp->if_l2com;
3785 #endif
3786         struct bwi_mac *mac;
3787
3788         BWI_ASSERT_LOCKED(sc);
3789
3790         KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
3791             ("opmode %d", ic->ic_opmode));
3792
3793         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3794             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3795         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3796
3797         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3798         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3799
3800         /* XXX 15 seconds */
3801         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3802 }
3803
3804 static int
3805 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3806 {
3807         struct bwi_mac *mac;
3808
3809         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3810             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3811         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3812
3813         return bwi_rf_calc_rssi(mac, hdr);
3814 }
3815
3816 static int
3817 bwi_calc_noise(struct bwi_softc *sc)
3818 {
3819         struct bwi_mac *mac;
3820
3821         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3822             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3823         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3824
3825         return bwi_rf_calc_noise(mac);
3826 }
3827
3828 static __inline uint8_t
3829 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
3830 {
3831         uint32_t plcp;
3832         uint8_t plcp_rate;
3833
3834         plcp = le32toh(*plcp0);
3835         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
3836         return ieee80211_plcp2rate(plcp_rate, IEEE80211_T_OFDM);
3837 }
3838
3839 static __inline uint8_t
3840 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
3841 {
3842         return ieee80211_plcp2rate(hdr->i_signal, IEEE80211_T_DS);
3843 }
3844
3845 static void
3846 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3847     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
3848 {
3849         const struct ieee80211_frame_min *wh;
3850
3851         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3852         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3853                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3854
3855         wh = mtod(m, const struct ieee80211_frame_min *);
3856         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3857                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3858
3859         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3860         sc->sc_rx_th.wr_rate = rate;
3861         sc->sc_rx_th.wr_antsignal = rssi;
3862         sc->sc_rx_th.wr_antnoise = noise;
3863 }
3864
3865 static void
3866 bwi_led_attach(struct bwi_softc *sc)
3867 {
3868         const uint8_t *led_act = NULL;
3869         uint16_t gpio, val[BWI_LED_MAX];
3870         int i;
3871
3872 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3873
3874         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3875                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3876                         led_act = bwi_vendor_led_act[i].led_act;
3877                         break;
3878                 }
3879         }
3880         if (led_act == NULL)
3881                 led_act = bwi_default_led_act;
3882
3883 #undef N
3884
3885         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3886         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3887         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3888
3889         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3890         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3891         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3892
3893         for (i = 0; i < BWI_LED_MAX; ++i) {
3894                 struct bwi_led *led = &sc->sc_leds[i];
3895
3896                 if (val[i] == 0xff) {
3897                         led->l_act = led_act[i];
3898                 } else {
3899                         if (val[i] & BWI_LED_ACT_LOW)
3900                                 led->l_flags |= BWI_LED_F_ACTLOW;
3901                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3902                 }
3903                 led->l_mask = (1 << i);
3904
3905                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3906                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3907                     led->l_act == BWI_LED_ACT_BLINK) {
3908                         led->l_flags |= BWI_LED_F_BLINK;
3909                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3910                                 led->l_flags |= BWI_LED_F_POLLABLE;
3911                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3912                                 led->l_flags |= BWI_LED_F_SLOW;
3913
3914                         if (sc->sc_blink_led == NULL) {
3915                                 sc->sc_blink_led = led;
3916                                 if (led->l_flags & BWI_LED_F_SLOW)
3917                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3918                         }
3919                 }
3920
3921                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3922                         "%dth led, act %d, lowact %d\n", i,
3923                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3924         }
3925         callout_init(&sc->sc_led_blink_ch, CALLOUT_MPSAFE);
3926 }
3927
3928 static __inline uint16_t
3929 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3930 {
3931         if (led->l_flags & BWI_LED_F_ACTLOW)
3932                 on = !on;
3933         if (on)
3934                 val |= led->l_mask;
3935         else
3936                 val &= ~led->l_mask;
3937         return val;
3938 }
3939
3940 static void
3941 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3942 {
3943         struct ifnet *ifp = sc->sc_ifp;
3944         struct ieee80211com *ic = ifp->if_l2com;
3945         uint16_t val;
3946         int i;
3947
3948         if (nstate == IEEE80211_S_INIT) {
3949                 callout_stop(&sc->sc_led_blink_ch);
3950                 sc->sc_led_blinking = 0;
3951         }
3952
3953         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
3954                 return;
3955
3956         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3957         for (i = 0; i < BWI_LED_MAX; ++i) {
3958                 struct bwi_led *led = &sc->sc_leds[i];
3959                 int on;
3960
3961                 if (led->l_act == BWI_LED_ACT_UNKN ||
3962                     led->l_act == BWI_LED_ACT_NULL)
3963                         continue;
3964
3965                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3966                     nstate != IEEE80211_S_INIT)
3967                         continue;
3968
3969                 switch (led->l_act) {
3970                 case BWI_LED_ACT_ON:    /* Always on */
3971                         on = 1;
3972                         break;
3973                 case BWI_LED_ACT_OFF:   /* Always off */
3974                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
3975                         on = 0;
3976                         break;
3977                 default:
3978                         on = 1;
3979                         switch (nstate) {
3980                         case IEEE80211_S_INIT:
3981                                 on = 0;
3982                                 break;
3983                         case IEEE80211_S_RUN:
3984                                 if (led->l_act == BWI_LED_ACT_11G &&
3985                                     ic->ic_curmode != IEEE80211_MODE_11G)
3986                                         on = 0;
3987                                 break;
3988                         default:
3989                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3990                                         on = 0;
3991                                 break;
3992                         }
3993                         break;
3994                 }
3995
3996                 val = bwi_led_onoff(led, val, on);
3997         }
3998         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3999 }
4000 static void
4001 bwi_led_event(struct bwi_softc *sc, int event)
4002 {
4003         struct bwi_led *led = sc->sc_blink_led;
4004         int rate;
4005
4006         if (event == BWI_LED_EVENT_POLL) {
4007                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
4008                         return;
4009                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
4010                         return;
4011         }
4012
4013         sc->sc_led_ticks = ticks;
4014         if (sc->sc_led_blinking)
4015                 return;
4016
4017         switch (event) {
4018         case BWI_LED_EVENT_RX:
4019                 rate = sc->sc_rx_rate;
4020                 break;
4021         case BWI_LED_EVENT_TX:
4022                 rate = sc->sc_tx_rate;
4023                 break;
4024         case BWI_LED_EVENT_POLL:
4025                 rate = 0;
4026                 break;
4027         default:
4028                 panic("unknown LED event %d\n", event);
4029                 break;
4030         }
4031         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
4032             bwi_led_duration[rate].off_dur);
4033 }
4034
4035 static void
4036 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
4037 {
4038         struct bwi_led *led = sc->sc_blink_led;
4039         uint16_t val;
4040
4041         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4042         val = bwi_led_onoff(led, val, 1);
4043         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4044
4045         if (led->l_flags & BWI_LED_F_SLOW) {
4046                 BWI_LED_SLOWDOWN(on_dur);
4047                 BWI_LED_SLOWDOWN(off_dur);
4048         }
4049
4050         sc->sc_led_blinking = 1;
4051         sc->sc_led_blink_offdur = off_dur;
4052
4053         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
4054 }
4055
4056 static void
4057 bwi_led_blink_next(void *xsc)
4058 {
4059         struct bwi_softc *sc = xsc;
4060         uint16_t val;
4061
4062         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4063         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
4064         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4065
4066         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
4067             bwi_led_blink_end, sc);
4068 }
4069
4070 static void
4071 bwi_led_blink_end(void *xsc)
4072 {
4073         struct bwi_softc *sc = xsc;
4074         sc->sc_led_blinking = 0;
4075 }
4076
4077 static void
4078 bwi_restart(void *xsc, int pending)
4079 {
4080         struct bwi_softc *sc = xsc;
4081         struct ifnet *ifp = sc->sc_ifp;
4082
4083         if_printf(ifp, "%s begin, help!\n", __func__);
4084         BWI_LOCK(sc);
4085         bwi_init_statechg(xsc, 0);
4086 #if 0
4087         bwi_start_locked(ifp);
4088 #endif
4089         BWI_UNLOCK(sc);
4090 }