drivers/staging/brcm80211/sys/wlc_mac80211.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include <linux/kernel.h>
  17 #include <linux/ctype.h>
  18 #include <linux/etherdevice.h>
  19 #include <bcmdefs.h>
  20 #include <bcmdevs.h>
  21 #include <wlc_cfg.h>
  22 #include <osl.h>
  23 #include <bcmutils.h>
  24 #include <bcmwifi.h>
  25 #include <siutils.h>
  26 #include <bcmendian.h>
  27 #include <proto/wpa.h>
  28 #include <pcicfg.h>
  29 #include <bcmsrom.h>
  30 #include <wlioctl.h>
  31 #include <sbhndpio.h>
  32 #include <sbhnddma.h>
  33 #include <hnddma.h>
  34 #include <hndpmu.h>
  35 #include <d11.h>
  36 #include <wlc_rate.h>
  37 #include <wlc_pub.h>
  38 #include <wlc_key.h>
  39 #include <wlc_bsscfg.h>
  40 #include <wlc_channel.h>
  41 #include <wlc_event.h>
  42 #include <wlc_mac80211.h>
  43 #include <wlc_bmac.h>
  44 #include <wlc_scb.h>
  45 #include <wlc_phy_hal.h>
  46 #include <wlc_phy_shim.h>
  47 #include <wlc_antsel.h>
  48 #include <wlc_stf.h>
  49 #include <wlc_ampdu.h>
  50 #include <wlc_event.h>
  51 #include <wl_export.h>
  52 #include "d11ucode_ext.h"
  53 #include <wlc_alloc.h>
  54 #include <net/mac80211.h>
  55 #include <wl_dbg.h>
  56
  57
  58 /*
  59  * buffer length needed for wlc_format_ssid
  60  * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
  61  */
  62 #define SSID_FMT_BUF_LEN        ((4 * DOT11_MAX_SSID_LEN) + 1)
  63
  64 #define TIMER_INTERVAL_WATCHDOG 1000    /* watchdog timer, in unit of ms */
  65 #define TIMER_INTERVAL_RADIOCHK 800     /* radio monitor timer, in unit of ms */
  66
  67 #ifndef WLC_MPC_MAX_DELAYCNT
  68 #define WLC_MPC_MAX_DELAYCNT    10      /* Max MPC timeout, in unit of watchdog */
  69 #endif
  70 #define WLC_MPC_MIN_DELAYCNT    1       /* Min MPC timeout, in unit of watchdog */
  71 #define WLC_MPC_THRESHOLD       3       /* MPC count threshold level */
  72
  73 #define BEACON_INTERVAL_DEFAULT 100     /* beacon interval, in unit of 1024TU */
  74 #define DTIM_INTERVAL_DEFAULT   3       /* DTIM interval, in unit of beacon interval */
  75
  76 /* Scale down delays to accommodate QT slow speed */
  77 #define BEACON_INTERVAL_DEF_QT  20      /* beacon interval, in unit of 1024TU */
  78 #define DTIM_INTERVAL_DEF_QT    1       /* DTIM interval, in unit of beacon interval */
  79
  80 #define TBTT_ALIGN_LEEWAY_US    100     /* min leeway before first TBTT in us */
  81
  82 /*
  83  * driver maintains internal 'tick'(wlc->pub->now) which increments in 1s OS timer(soft
  84  * watchdog) it is not a wall clock and won't increment when driver is in "down" state
  85  * this low resolution driver tick can be used for maintenance tasks such as phy
  86  * calibration and scb update
  87  */
  88
  89 /* watchdog trigger mode: OSL timer or TBTT */
  90 #define WLC_WATCHDOG_TBTT(wlc) \
  91         (wlc->stas_associated > 0 && wlc->PM != PM_OFF && wlc->pub->align_wd_tbtt)
  92
  93 /* To inform the ucode of the last mcast frame posted so that it can clear moredata bit */
  94 #define BCMCFID(wlc, fid) wlc_bmac_write_shm((wlc)->hw, M_BCMC_FID, (fid))
  95
  96 #define WLC_WAR16165(wlc) (wlc->pub->sih->bustype == PCI_BUS && \
  97                                 (!AP_ENAB(wlc->pub)) && (wlc->war16165))
  98
  99 /* debug/trace */
 100 uint wl_msg_level =
 101 #if defined(BCMDBG)
 102     WL_ERROR_VAL;
 103 #else
 104     0;
 105 #endif                          /* BCMDBG */
 106
 107 /* Find basic rate for a given rate */
 108 #define WLC_BASIC_RATE(wlc, rspec)      (IS_MCS(rspec) ? \
 109                         (wlc)->band->basic_rate[mcs_table[rspec & RSPEC_RATE_MASK].leg_ofdm] : \
 110                         (wlc)->band->basic_rate[rspec & RSPEC_RATE_MASK])
 111
 112 #define FRAMETYPE(r, mimoframe) (IS_MCS(r) ? mimoframe  : (IS_CCK(r) ? FT_CCK : FT_OFDM))
 113
 114 #define RFDISABLE_DEFAULT       10000000        /* rfdisable delay timer 500 ms, runs of ALP clock */
 115
 116 #define WLC_TEMPSENSE_PERIOD            10      /* 10 second timeout */
 117
 118 #define SCAN_IN_PROGRESS(x)     0
 119
 120 #define EPI_VERSION_NUM         0x054b0b00
 121
 122 #ifdef BCMDBG
 123 /* pointer to most recently allocated wl/wlc */
 124 static struct wlc_info *wlc_info_dbg = (struct wlc_info *) (NULL);
 125 #endif
 126
 127 /* IOVar table */
 128
 129 /* Parameter IDs, for use only internally to wlc -- in the wlc_iovars
 130  * table and by the wlc_doiovar() function.  No ordering is imposed:
 131  * the table is keyed by name, and the function uses a switch.
 132  */
 133 enum {
 134         IOV_MPC = 1,
 135         IOV_QTXPOWER,
 136         IOV_BCN_LI_BCN,         /* Beacon listen interval in # of beacons */
 137         IOV_LAST                /* In case of a need to check max ID number */
 138 };
 139
 140 const bcm_iovar_t wlc_iovars[] = {
 141         {"mpc", IOV_MPC, (IOVF_OPEN_ALLOW), IOVT_BOOL, 0},
 142         {"qtxpower", IOV_QTXPOWER, (IOVF_WHL | IOVF_OPEN_ALLOW), IOVT_UINT32,
 143          0},
 144         {"bcn_li_bcn", IOV_BCN_LI_BCN, 0, IOVT_UINT8, 0},
 145         {NULL, 0, 0, 0, 0}
 146 };
 147
 148 const u8 prio2fifo[NUMPRIO] = {
 149         TX_AC_BE_FIFO,          /* 0    BE      AC_BE   Best Effort */
 150         TX_AC_BK_FIFO,          /* 1    BK      AC_BK   Background */
 151         TX_AC_BK_FIFO,          /* 2    --      AC_BK   Background */
 152         TX_AC_BE_FIFO,          /* 3    EE      AC_BE   Best Effort */
 153         TX_AC_VI_FIFO,          /* 4    CL      AC_VI   Video */
 154         TX_AC_VI_FIFO,          /* 5    VI      AC_VI   Video */
 155         TX_AC_VO_FIFO,          /* 6    VO      AC_VO   Voice */
 156         TX_AC_VO_FIFO           /* 7    NC      AC_VO   Voice */
 157 };
 158
 159 /* precedences numbers for wlc queues. These are twice as may levels as
 160  * 802.1D priorities.
 161  * Odd numbers are used for HI priority traffic at same precedence levels
 162  * These constants are used ONLY by wlc_prio2prec_map.  Do not use them elsewhere.
 163  */
 164 #define _WLC_PREC_NONE          0       /* None = - */
 165 #define _WLC_PREC_BK            2       /* BK - Background */
 166 #define _WLC_PREC_BE            4       /* BE - Best-effort */
 167 #define _WLC_PREC_EE            6       /* EE - Excellent-effort */
 168 #define _WLC_PREC_CL            8       /* CL - Controlled Load */
 169 #define _WLC_PREC_VI            10      /* Vi - Video */
 170 #define _WLC_PREC_VO            12      /* Vo - Voice */
 171 #define _WLC_PREC_NC            14      /* NC - Network Control */
 172
 173 /* 802.1D Priority to precedence queue mapping */
 174 const u8 wlc_prio2prec_map[] = {
 175         _WLC_PREC_BE,           /* 0 BE - Best-effort */
 176         _WLC_PREC_BK,           /* 1 BK - Background */
 177         _WLC_PREC_NONE,         /* 2 None = - */
 178         _WLC_PREC_EE,           /* 3 EE - Excellent-effort */
 179         _WLC_PREC_CL,           /* 4 CL - Controlled Load */
 180         _WLC_PREC_VI,           /* 5 Vi - Video */
 181         _WLC_PREC_VO,           /* 6 Vo - Voice */
 182         _WLC_PREC_NC,           /* 7 NC - Network Control */
 183 };
 184
 185 /* Sanity check for tx_prec_map and fifo synchup
 186  * Either there are some packets pending for the fifo, else if fifo is empty then
 187  * all the corresponding precmap bits should be set
 188  */
 189 #define WLC_TX_FIFO_CHECK(wlc, fifo) (TXPKTPENDGET((wlc), (fifo)) ||    \
 190         (TXPKTPENDGET((wlc), (fifo)) == 0 && \
 191         ((wlc)->tx_prec_map & (wlc)->fifo2prec_map[(fifo)]) == \
 192         (wlc)->fifo2prec_map[(fifo)]))
 193
 194 /* TX FIFO number to WME/802.1E Access Category */
 195 const u8 wme_fifo2ac[] = { AC_BK, AC_BE, AC_VI, AC_VO, AC_BE, AC_BE };
 196
 197 /* WME/802.1E Access Category to TX FIFO number */
 198 static const u8 wme_ac2fifo[] = { 1, 0, 2, 3 };
 199
 200 static bool in_send_q = false;
 201
 202 /* Shared memory location index for various AC params */
 203 #define wme_shmemacindex(ac)    wme_ac2fifo[ac]
 204
 205 #ifdef BCMDBG
 206 static const char *fifo_names[] = {
 207         "AC_BK", "AC_BE", "AC_VI", "AC_VO", "BCMC", "ATIM" };
 208 const char *aci_names[] = { "AC_BE", "AC_BK", "AC_VI", "AC_VO" };
 209 #endif
 210
 211 static const u8 acbitmap2maxprio[] = {
 212         PRIO_8021D_BE, PRIO_8021D_BE, PRIO_8021D_BK, PRIO_8021D_BK,
 213         PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI,
 214         PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO,
 215         PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO
 216 };
 217
 218 /* currently the best mechanism for determining SIFS is the band in use */
 219 #define SIFS(band) ((band)->bandtype == WLC_BAND_5G ? APHY_SIFS_TIME : BPHY_SIFS_TIME);
 220
 221 /* value for # replay counters currently supported */
 222 #define WLC_REPLAY_CNTRS_VALUE  WPA_CAP_16_REPLAY_CNTRS
 223
 224 /* local prototypes */
 225 static u16 BCMFASTPATH wlc_d11hdrs_mac80211(struct wlc_info *wlc,
 226                                                struct ieee80211_hw *hw,
 227                                                struct sk_buff *p,
 228                                                struct scb *scb, uint frag,
 229                                                uint nfrags, uint queue,
 230                                                uint next_frag_len,
 231                                                wsec_key_t *key,
 232                                                ratespec_t rspec_override);
 233
 234 static void wlc_bss_default_init(struct wlc_info *wlc);
 235 static void wlc_ucode_mac_upd(struct wlc_info *wlc);
 236 static ratespec_t mac80211_wlc_set_nrate(struct wlc_info *wlc,
 237                                          struct wlcband *cur_band, u32 int_val);
 238 static void wlc_tx_prec_map_init(struct wlc_info *wlc);
 239 static void wlc_watchdog(void *arg);
 240 static void wlc_watchdog_by_timer(void *arg);
 241 static int wlc_set_rateset(struct wlc_info *wlc, wlc_rateset_t *rs_arg);
 242 static int wlc_iovar_rangecheck(struct wlc_info *wlc, u32 val,
 243                                 const bcm_iovar_t *vi);
 244 static u8 wlc_local_constraint_qdbm(struct wlc_info *wlc);
 245
 246 /* send and receive */
 247 static wlc_txq_info_t *wlc_txq_alloc(struct wlc_info *wlc,
 248                                      struct osl_info *osh);
 249 static void wlc_txq_free(struct wlc_info *wlc, struct osl_info *osh,
 250                          wlc_txq_info_t *qi);
 251 static void wlc_txflowcontrol_signal(struct wlc_info *wlc, wlc_txq_info_t *qi,
 252                                      bool on, int prio);
 253 static void wlc_txflowcontrol_reset(struct wlc_info *wlc);
 254 static u16 wlc_compute_airtime(struct wlc_info *wlc, ratespec_t rspec,
 255                                   uint length);
 256 static void wlc_compute_cck_plcp(ratespec_t rate, uint length, u8 *plcp);
 257 static void wlc_compute_ofdm_plcp(ratespec_t rate, uint length, u8 *plcp);
 258 static void wlc_compute_mimo_plcp(ratespec_t rate, uint length, u8 *plcp);
 259 static u16 wlc_compute_frame_dur(struct wlc_info *wlc, ratespec_t rate,
 260                                     u8 preamble_type, uint next_frag_len);
 261 static void wlc_recvctl(struct wlc_info *wlc, struct osl_info *osh,
 262                         d11rxhdr_t *rxh, struct sk_buff *p);
 263 static uint wlc_calc_frame_len(struct wlc_info *wlc, ratespec_t rate,
 264                                u8 preamble_type, uint dur);
 265 static uint wlc_calc_ack_time(struct wlc_info *wlc, ratespec_t rate,
 266                               u8 preamble_type);
 267 static uint wlc_calc_cts_time(struct wlc_info *wlc, ratespec_t rate,
 268                               u8 preamble_type);
 269 /* interrupt, up/down, band */
 270 static void wlc_setband(struct wlc_info *wlc, uint bandunit);
 271 static chanspec_t wlc_init_chanspec(struct wlc_info *wlc);
 272 static void wlc_bandinit_ordered(struct wlc_info *wlc, chanspec_t chanspec);
 273 static void wlc_bsinit(struct wlc_info *wlc);
 274 static int wlc_duty_cycle_set(struct wlc_info *wlc, int duty_cycle, bool isOFDM,
 275                               bool writeToShm);
 276 static void wlc_radio_hwdisable_upd(struct wlc_info *wlc);
 277 static bool wlc_radio_monitor_start(struct wlc_info *wlc);
 278 static void wlc_radio_timer(void *arg);
 279 static void wlc_radio_enable(struct wlc_info *wlc);
 280 static void wlc_radio_upd(struct wlc_info *wlc);
 281
 282 /* scan, association, BSS */
 283 static uint wlc_calc_ba_time(struct wlc_info *wlc, ratespec_t rate,
 284                              u8 preamble_type);
 285 static void wlc_update_mimo_band_bwcap(struct wlc_info *wlc, u8 bwcap);
 286 static void wlc_ht_update_sgi_rx(struct wlc_info *wlc, int val);
 287 static void wlc_ht_update_ldpc(struct wlc_info *wlc, s8 val);
 288 static void wlc_war16165(struct wlc_info *wlc, bool tx);
 289
 290 static void wlc_process_eventq(void *arg);
 291 static void wlc_wme_retries_write(struct wlc_info *wlc);
 292 static bool wlc_attach_stf_ant_init(struct wlc_info *wlc);
 293 static uint wlc_attach_module(struct wlc_info *wlc);
 294 static void wlc_detach_module(struct wlc_info *wlc);
 295 static void wlc_timers_deinit(struct wlc_info *wlc);
 296 static void wlc_down_led_upd(struct wlc_info *wlc);
 297 static uint wlc_down_del_timer(struct wlc_info *wlc);
 298 static void wlc_ofdm_rateset_war(struct wlc_info *wlc);
 299 static int _wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
 300                       struct wlc_if *wlcif);
 301
 302 #if defined(BCMDBG)
 303 void wlc_get_rcmta(struct wlc_info *wlc, int idx, struct ether_addr *addr)
 304 {
 305         d11regs_t *regs = wlc->regs;
 306         u32 v32;
 307         struct osl_info *osh;
 308
 309         WL_TRACE("wl%d: %s\n", WLCWLUNIT(wlc), __func__);
 310
 311         ASSERT(wlc->pub->corerev > 4);
 312
 313         osh = wlc->osh;
 314
 315         W_REG(osh, &regs->objaddr, (OBJADDR_RCMTA_SEL | (idx * 2)));
 316         (void)R_REG(osh, &regs->objaddr);
 317         v32 = R_REG(osh, &regs->objdata);
 318         addr->octet[0] = (u8) v32;
 319         addr->octet[1] = (u8) (v32 >> 8);
 320         addr->octet[2] = (u8) (v32 >> 16);
 321         addr->octet[3] = (u8) (v32 >> 24);
 322         W_REG(osh, &regs->objaddr, (OBJADDR_RCMTA_SEL | ((idx * 2) + 1)));
 323         (void)R_REG(osh, &regs->objaddr);
 324         v32 = R_REG(osh, (volatile u16 *)&regs->objdata);
 325         addr->octet[4] = (u8) v32;
 326         addr->octet[5] = (u8) (v32 >> 8);
 327 }
 328 #endif                          /* defined(BCMDBG) */
 329
 330 /* keep the chip awake if needed */
 331 bool wlc_stay_awake(struct wlc_info *wlc)
 332 {
 333         return true;
 334 }
 335
 336 /* conditions under which the PM bit should be set in outgoing frames and STAY_AWAKE is meaningful
 337  */
 338 bool wlc_ps_allowed(struct wlc_info *wlc)
 339 {
 340         int idx;
 341         wlc_bsscfg_t *cfg;
 342
 343         /* disallow PS when one of the following global conditions meets */
 344         if (!wlc->pub->associated || !wlc->PMenabled || wlc->PM_override)
 345                 return false;
 346
 347         /* disallow PS when one of these meets when not scanning */
 348         if (!wlc->PMblocked) {
 349                 if (AP_ACTIVE(wlc) || wlc->monitor)
 350                         return false;
 351         }
 352
 353         FOREACH_AS_STA(wlc, idx, cfg) {
 354                 /* disallow PS when one of the following bsscfg specific conditions meets */
 355                 if (!cfg->BSS || !WLC_PORTOPEN(cfg))
 356                         return false;
 357
 358                 if (!cfg->dtim_programmed)
 359                         return false;
 360         }
 361
 362         return true;
 363 }
 364
 365 void wlc_reset(struct wlc_info *wlc)
 366 {
 367         WL_TRACE("wl%d: wlc_reset\n", wlc->pub->unit);
 368
 369         wlc->check_for_unaligned_tbtt = false;
 370
 371         /* slurp up hw mac counters before core reset */
 372         if (WLC_UPDATE_STATS(wlc)) {
 373                 wlc_statsupd(wlc);
 374
 375                 /* reset our snapshot of macstat counters */
 376                 memset((char *)wlc->core->macstat_snapshot, 0,
 377                         sizeof(macstat_t));
 378         }
 379
 380         wlc_bmac_reset(wlc->hw);
 381         wlc_ampdu_reset(wlc->ampdu);
 382         wlc->txretried = 0;
 383
 384 }
 385
 386 void wlc_fatal_error(struct wlc_info *wlc)
 387 {
 388         WL_ERROR("wl%d: fatal error, reinitializing\n", wlc->pub->unit);
 389         wl_init(wlc->wl);
 390 }
 391
 392 /* Return the channel the driver should initialize during wlc_init.
 393  * the channel may have to be changed from the currently configured channel
 394  * if other configurations are in conflict (bandlocked, 11n mode disabled,
 395  * invalid channel for current country, etc.)
 396  */
 397 static chanspec_t wlc_init_chanspec(struct wlc_info *wlc)
 398 {
 399         chanspec_t chanspec =
 400             1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
 401             WL_CHANSPEC_BAND_2G;
 402
 403         /* make sure the channel is on the supported band if we are band-restricted */
 404         if (wlc->bandlocked || NBANDS(wlc) == 1) {
 405                 ASSERT(CHSPEC_WLCBANDUNIT(chanspec) == wlc->band->bandunit);
 406         }
 407         ASSERT(wlc_valid_chanspec_db(wlc->cmi, chanspec));
 408         return chanspec;
 409 }
 410
 411 struct scb global_scb;
 412
 413 static void wlc_init_scb(struct wlc_info *wlc, struct scb *scb)
 414 {
 415         int i;
 416         scb->flags = SCB_WMECAP | SCB_HTCAP;
 417         for (i = 0; i < NUMPRIO; i++)
 418                 scb->seqnum[i] = 0;
 419 }
 420
 421 void wlc_init(struct wlc_info *wlc)
 422 {
 423         d11regs_t *regs;
 424         chanspec_t chanspec;
 425         int i;
 426         wlc_bsscfg_t *bsscfg;
 427         bool mute = false;
 428
 429         WL_TRACE("wl%d: wlc_init\n", wlc->pub->unit);
 430
 431         regs = wlc->regs;
 432
 433         /* This will happen if a big-hammer was executed. In that case, we want to go back
 434          * to the channel that we were on and not new channel
 435          */
 436         if (wlc->pub->associated)
 437                 chanspec = wlc->home_chanspec;
 438         else
 439                 chanspec = wlc_init_chanspec(wlc);
 440
 441         wlc_bmac_init(wlc->hw, chanspec, mute);
 442
 443         wlc->seckeys = wlc_bmac_read_shm(wlc->hw, M_SECRXKEYS_PTR) * 2;
 444         if (D11REV_GE(wlc->pub->corerev, 15) && (wlc->machwcap & MCAP_TKIPMIC))
 445                 wlc->tkmickeys =
 446                     wlc_bmac_read_shm(wlc->hw, M_TKMICKEYS_PTR) * 2;
 447
 448         /* update beacon listen interval */
 449         wlc_bcn_li_upd(wlc);
 450         wlc->bcn_wait_prd =
 451             (u8) (wlc_bmac_read_shm(wlc->hw, M_NOSLPZNATDTIM) >> 10);
 452         ASSERT(wlc->bcn_wait_prd > 0);
 453
 454         /* the world is new again, so is our reported rate */
 455         wlc_reprate_init(wlc);
 456
 457         /* write ethernet address to core */
 458         FOREACH_BSS(wlc, i, bsscfg) {
 459                 wlc_set_mac(bsscfg);
 460                 wlc_set_bssid(bsscfg);
 461         }
 462
 463         /* Update tsf_cfprep if associated and up */
 464         if (wlc->pub->associated) {
 465                 FOREACH_BSS(wlc, i, bsscfg) {
 466                         if (bsscfg->up) {
 467                                 u32 bi;
 468
 469                                 /* get beacon period from bsscfg and convert to uS */
 470                                 bi = bsscfg->current_bss->beacon_period << 10;
 471                                 /* update the tsf_cfprep register */
 472                                 /* since init path would reset to default value */
 473                                 W_REG(wlc->osh, &regs->tsf_cfprep,
 474                                       (bi << CFPREP_CBI_SHIFT));
 475
 476                                 /* Update maccontrol PM related bits */
 477                                 wlc_set_ps_ctrl(wlc);
 478
 479                                 break;
 480                         }
 481                 }
 482         }
 483
 484         wlc_key_hw_init_all(wlc);
 485
 486         wlc_bandinit_ordered(wlc, chanspec);
 487
 488         wlc_init_scb(wlc, &global_scb);
 489
 490         /* init probe response timeout */
 491         wlc_write_shm(wlc, M_PRS_MAXTIME, wlc->prb_resp_timeout);
 492
 493         /* init max burst txop (framebursting) */
 494         wlc_write_shm(wlc, M_MBURST_TXOP,
 495                       (wlc->
 496                        _rifs ? (EDCF_AC_VO_TXOP_AP << 5) : MAXFRAMEBURST_TXOP));
 497
 498         /* initialize maximum allowed duty cycle */
 499         wlc_duty_cycle_set(wlc, wlc->tx_duty_cycle_ofdm, true, true);
 500         wlc_duty_cycle_set(wlc, wlc->tx_duty_cycle_cck, false, true);
 501
 502         /* Update some shared memory locations related to max AMPDU size allowed to received */
 503         wlc_ampdu_shm_upd(wlc->ampdu);
 504
 505         /* band-specific inits */
 506         wlc_bsinit(wlc);
 507
 508         /* Enable EDCF mode (while the MAC is suspended) */
 509         if (EDCF_ENAB(wlc->pub)) {
 510                 OR_REG(wlc->osh, &regs->ifs_ctl, IFS_USEEDCF);
 511                 wlc_edcf_setparams(wlc->cfg, false);
 512         }
 513
 514         /* Init precedence maps for empty FIFOs */
 515         wlc_tx_prec_map_init(wlc);
 516
 517         /* read the ucode version if we have not yet done so */
 518         if (wlc->ucode_rev == 0) {
 519                 wlc->ucode_rev =
 520                     wlc_read_shm(wlc, M_BOM_REV_MAJOR) << NBITS(u16);
 521                 wlc->ucode_rev |= wlc_read_shm(wlc, M_BOM_REV_MINOR);
 522         }
 523
 524         /* ..now really unleash hell (allow the MAC out of suspend) */
 525         wlc_enable_mac(wlc);
 526
 527         /* clear tx flow control */
 528         wlc_txflowcontrol_reset(wlc);
 529
 530         /* clear tx data fifo suspends */
 531         wlc->tx_suspended = false;
 532
 533         /* enable the RF Disable Delay timer */
 534         if (D11REV_GE(wlc->pub->corerev, 10))
 535                 W_REG(wlc->osh, &wlc->regs->rfdisabledly, RFDISABLE_DEFAULT);
 536
 537         /* initialize mpc delay */
 538         wlc->mpc_delay_off = wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
 539
 540         /*
 541          * Initialize WME parameters; if they haven't been set by some other
 542          * mechanism (IOVar, etc) then read them from the hardware.
 543          */
 544         if (WLC_WME_RETRY_SHORT_GET(wlc, 0) == 0) {     /* Unintialized; read from HW */
 545                 int ac;
 546
 547                 ASSERT(wlc->clk);
 548                 for (ac = 0; ac < AC_COUNT; ac++) {
 549                         wlc->wme_retries[ac] =
 550                             wlc_read_shm(wlc, M_AC_TXLMT_ADDR(ac));
 551                 }
 552         }
 553 }
 554
 555 void wlc_mac_bcn_promisc_change(struct wlc_info *wlc, bool promisc)
 556 {
 557         wlc->bcnmisc_monitor = promisc;
 558         wlc_mac_bcn_promisc(wlc);
 559 }
 560
 561 void wlc_mac_bcn_promisc(struct wlc_info *wlc)
 562 {
 563         if ((AP_ENAB(wlc->pub) && (N_ENAB(wlc->pub) || wlc->band->gmode)) ||
 564             wlc->bcnmisc_ibss || wlc->bcnmisc_scan || wlc->bcnmisc_monitor)
 565                 wlc_mctrl(wlc, MCTL_BCNS_PROMISC, MCTL_BCNS_PROMISC);
 566         else
 567                 wlc_mctrl(wlc, MCTL_BCNS_PROMISC, 0);
 568 }
 569
 570 /* set or clear maccontrol bits MCTL_PROMISC and MCTL_KEEPCONTROL */
 571 void wlc_mac_promisc(struct wlc_info *wlc)
 572 {
 573         u32 promisc_bits = 0;
 574
 575         /* promiscuous mode just sets MCTL_PROMISC
 576          * Note: APs get all BSS traffic without the need to set the MCTL_PROMISC bit
 577          * since all BSS data traffic is directed at the AP
 578          */
 579         if (PROMISC_ENAB(wlc->pub) && !AP_ENAB(wlc->pub) && !wlc->wet)
 580                 promisc_bits |= MCTL_PROMISC;
 581
 582         /* monitor mode needs both MCTL_PROMISC and MCTL_KEEPCONTROL
 583          * Note: monitor mode also needs MCTL_BCNS_PROMISC, but that is
 584          * handled in wlc_mac_bcn_promisc()
 585          */
 586         if (MONITOR_ENAB(wlc))
 587                 promisc_bits |= MCTL_PROMISC | MCTL_KEEPCONTROL;
 588
 589         wlc_mctrl(wlc, MCTL_PROMISC | MCTL_KEEPCONTROL, promisc_bits);
 590 }
 591
 592 /* check if hps and wake states of sw and hw are in sync */
 593 bool wlc_ps_check(struct wlc_info *wlc)
 594 {
 595         bool res = true;
 596         bool hps, wake;
 597         bool wake_ok;
 598
 599         if (!AP_ACTIVE(wlc)) {
 600                 volatile u32 tmp;
 601                 tmp = R_REG(wlc->osh, &wlc->regs->maccontrol);
 602
 603                 /* If deviceremoved is detected, then don't take any action as this can be called
 604                  * in any context. Assume that caller will take care of the condition. This is just
 605                  * to avoid assert
 606                  */
 607                 if (tmp == 0xffffffff) {
 608                         WL_ERROR("wl%d: %s: dead chip\n",
 609                                  wlc->pub->unit, __func__);
 610                         return DEVICEREMOVED(wlc);
 611                 }
 612
 613                 hps = PS_ALLOWED(wlc);
 614
 615                 if (hps != ((tmp & MCTL_HPS) != 0)) {
 616                         int idx;
 617                         wlc_bsscfg_t *cfg;
 618                         WL_ERROR("wl%d: hps not sync, sw %d, maccontrol 0x%x\n",
 619                                  wlc->pub->unit, hps, tmp);
 620                         FOREACH_BSS(wlc, idx, cfg) {
 621                                 if (!BSSCFG_STA(cfg))
 622                                         continue;
 623                         }
 624
 625                         res = false;
 626                 }
 627                 /* For a monolithic build the wake check can be exact since it looks at wake
 628                  * override bits. The MCTL_WAKE bit should match the 'wake' value.
 629                  */
 630                 wake = STAY_AWAKE(wlc) || wlc->hw->wake_override;
 631                 wake_ok = (wake == ((tmp & MCTL_WAKE) != 0));
 632                 if (hps && !wake_ok) {
 633                         WL_ERROR("wl%d: wake not sync, sw %d maccontrol 0x%x\n",
 634                                  wlc->pub->unit, wake, tmp);
 635                         res = false;
 636                 }
 637         }
 638         ASSERT(res);
 639         return res;
 640 }
 641
 642 /* push sw hps and wake state through hardware */
 643 void wlc_set_ps_ctrl(struct wlc_info *wlc)
 644 {
 645         u32 v1, v2;
 646         bool hps, wake;
 647         bool awake_before;
 648
 649         hps = PS_ALLOWED(wlc);
 650         wake = hps ? (STAY_AWAKE(wlc)) : true;
 651
 652         WL_TRACE("wl%d: wlc_set_ps_ctrl: hps %d wake %d\n",
 653                  wlc->pub->unit, hps, wake);
 654
 655         v1 = R_REG(wlc->osh, &wlc->regs->maccontrol);
 656         v2 = 0;
 657         if (hps)
 658                 v2 |= MCTL_HPS;
 659         if (wake)
 660                 v2 |= MCTL_WAKE;
 661
 662         wlc_mctrl(wlc, MCTL_WAKE | MCTL_HPS, v2);
 663
 664         awake_before = ((v1 & MCTL_WAKE) || ((v1 & MCTL_HPS) == 0));
 665
 666         if (wake && !awake_before)
 667                 wlc_bmac_wait_for_wake(wlc->hw);
 668
 669 }
 670
 671 /*
 672  * Write this BSS config's MAC address to core.
 673  * Updates RXE match engine.
 674  */
 675 int wlc_set_mac(wlc_bsscfg_t *cfg)
 676 {
 677         int err = 0;
 678         struct wlc_info *wlc = cfg->wlc;
 679
 680         if (cfg == wlc->cfg) {
 681                 /* enter the MAC addr into the RXE match registers */
 682                 wlc_set_addrmatch(wlc, RCM_MAC_OFFSET, &cfg->cur_etheraddr);
 683         }
 684
 685         wlc_ampdu_macaddr_upd(wlc);
 686
 687         return err;
 688 }
 689
 690 /* Write the BSS config's BSSID address to core (set_bssid in d11procs.tcl).
 691  * Updates RXE match engine.
 692  */
 693 void wlc_set_bssid(wlc_bsscfg_t *cfg)
 694 {
 695         struct wlc_info *wlc = cfg->wlc;
 696
 697         /* if primary config, we need to update BSSID in RXE match registers */
 698         if (cfg == wlc->cfg) {
 699                 wlc_set_addrmatch(wlc, RCM_BSSID_OFFSET, &cfg->BSSID);
 700         }
 701 #ifdef SUPPORT_HWKEYS
 702         else if (BSSCFG_STA(cfg) && cfg->BSS) {
 703                 wlc_rcmta_add_bssid(wlc, cfg);
 704         }
 705 #endif
 706 }
 707
 708 /*
 709  * Suspend the the MAC and update the slot timing
 710  * for standard 11b/g (20us slots) or shortslot 11g (9us slots).
 711  */
 712 void wlc_switch_shortslot(struct wlc_info *wlc, bool shortslot)
 713 {
 714         int idx;
 715         wlc_bsscfg_t *cfg;
 716
 717         ASSERT(wlc->band->gmode);
 718
 719         /* use the override if it is set */
 720         if (wlc->shortslot_override != WLC_SHORTSLOT_AUTO)
 721                 shortslot = (wlc->shortslot_override == WLC_SHORTSLOT_ON);
 722
 723         if (wlc->shortslot == shortslot)
 724                 return;
 725
 726         wlc->shortslot = shortslot;
 727
 728         /* update the capability based on current shortslot mode */
 729         FOREACH_BSS(wlc, idx, cfg) {
 730                 if (!cfg->associated)
 731                         continue;
 732                 cfg->current_bss->capability &= ~DOT11_CAP_SHORTSLOT;
 733                 if (wlc->shortslot)
 734                         cfg->current_bss->capability |= DOT11_CAP_SHORTSLOT;
 735         }
 736
 737         wlc_bmac_set_shortslot(wlc->hw, shortslot);
 738 }
 739
 740 static u8 wlc_local_constraint_qdbm(struct wlc_info *wlc)
 741 {
 742         u8 local;
 743         s16 local_max;
 744
 745         local = WLC_TXPWR_MAX;
 746         if (wlc->pub->associated &&
 747             (wf_chspec_ctlchan(wlc->chanspec) ==
 748              wf_chspec_ctlchan(wlc->home_chanspec))) {
 749
 750                 /* get the local power constraint if we are on the AP's
 751                  * channel [802.11h, 7.3.2.13]
 752                  */
 753                 /* Clamp the value between 0 and WLC_TXPWR_MAX w/o overflowing the target */
 754                 local_max =
 755                     (wlc->txpwr_local_max -
 756                      wlc->txpwr_local_constraint) * WLC_TXPWR_DB_FACTOR;
 757                 if (local_max > 0 && local_max < WLC_TXPWR_MAX)
 758                         return (u8) local_max;
 759                 if (local_max < 0)
 760                         return 0;
 761         }
 762
 763         return local;
 764 }
 765
 766 /* propagate home chanspec to all bsscfgs in case bsscfg->current_bss->chanspec is referenced */
 767 void wlc_set_home_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
 768 {
 769         if (wlc->home_chanspec != chanspec) {
 770                 int idx;
 771                 wlc_bsscfg_t *cfg;
 772
 773                 wlc->home_chanspec = chanspec;
 774
 775                 FOREACH_BSS(wlc, idx, cfg) {
 776                         if (!cfg->associated)
 777                                 continue;
 778                         cfg->target_bss->chanspec = chanspec;
 779                         cfg->current_bss->chanspec = chanspec;
 780                 }
 781
 782         }
 783 }
 784
 785 static void wlc_set_phy_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
 786 {
 787         /* Save our copy of the chanspec */
 788         wlc->chanspec = chanspec;
 789
 790         /* Set the chanspec and power limits for this locale after computing
 791          * any 11h local tx power constraints.
 792          */
 793         wlc_channel_set_chanspec(wlc->cmi, chanspec,
 794                                  wlc_local_constraint_qdbm(wlc));
 795
 796         if (wlc->stf->ss_algosel_auto)
 797                 wlc_stf_ss_algo_channel_get(wlc, &wlc->stf->ss_algo_channel,
 798                                             chanspec);
 799
 800         wlc_stf_ss_update(wlc, wlc->band);
 801
 802 }
 803
 804 void wlc_set_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
 805 {
 806         uint bandunit;
 807         bool switchband = false;
 808         chanspec_t old_chanspec = wlc->chanspec;
 809
 810         if (!wlc_valid_chanspec_db(wlc->cmi, chanspec)) {
 811                 WL_ERROR("wl%d: %s: Bad channel %d\n",
 812                          wlc->pub->unit, __func__, CHSPEC_CHANNEL(chanspec));
 813                 ASSERT(wlc_valid_chanspec_db(wlc->cmi, chanspec));
 814                 return;
 815         }
 816
 817         /* Switch bands if necessary */
 818         if (NBANDS(wlc) > 1) {
 819                 bandunit = CHSPEC_WLCBANDUNIT(chanspec);
 820                 if (wlc->band->bandunit != bandunit || wlc->bandinit_pending) {
 821                         switchband = true;
 822                         if (wlc->bandlocked) {
 823                                 WL_ERROR("wl%d: %s: chspec %d band is locked!\n",
 824                                          wlc->pub->unit, __func__,
 825                                          CHSPEC_CHANNEL(chanspec));
 826                                 return;
 827                         }
 828                         /* BMAC_NOTE: should the setband call come after the wlc_bmac_chanspec() ?
 829                          * if the setband updates (wlc_bsinit) use low level calls to inspect and
 830                          * set state, the state inspected may be from the wrong band, or the
 831                          * following wlc_bmac_set_chanspec() may undo the work.
 832                          */
 833                         wlc_setband(wlc, bandunit);
 834                 }
 835         }
 836
 837         ASSERT(N_ENAB(wlc->pub) || !CHSPEC_IS40(chanspec));
 838
 839         /* sync up phy/radio chanspec */
 840         wlc_set_phy_chanspec(wlc, chanspec);
 841
 842         /* init antenna selection */
 843         if (CHSPEC_WLC_BW(old_chanspec) != CHSPEC_WLC_BW(chanspec)) {
 844                 if (WLANTSEL_ENAB(wlc))
 845                         wlc_antsel_init(wlc->asi);
 846
 847                 /* Fix the hardware rateset based on bw.
 848                  * Mainly add MCS32 for 40Mhz, remove MCS 32 for 20Mhz
 849                  */
 850                 wlc_rateset_bw_mcs_filter(&wlc->band->hw_rateset,
 851                                           wlc->band->
 852                                           mimo_cap_40 ? CHSPEC_WLC_BW(chanspec)
 853                                           : 0);
 854         }
 855
 856         /* update some mac configuration since chanspec changed */
 857         wlc_ucode_mac_upd(wlc);
 858 }
 859
 860 #if defined(BCMDBG)
 861 static int wlc_get_current_txpwr(struct wlc_info *wlc, void *pwr, uint len)
 862 {
 863         txpwr_limits_t txpwr;
 864         tx_power_t power;
 865         tx_power_legacy_t *old_power = NULL;
 866         int r, c;
 867         uint qdbm;
 868         bool override;
 869
 870         if (len == sizeof(tx_power_legacy_t))
 871                 old_power = (tx_power_legacy_t *) pwr;
 872         else if (len < sizeof(tx_power_t))
 873                 return BCME_BUFTOOSHORT;
 874
 875         memset(&power, 0, sizeof(tx_power_t));
 876
 877         power.chanspec = WLC_BAND_PI_RADIO_CHANSPEC;
 878         if (wlc->pub->associated)
 879                 power.local_chanspec = wlc->home_chanspec;
 880
 881         /* Return the user target tx power limits for the various rates.  Note  wlc_phy.c's
 882          * public interface only implements getting and setting a single value for all of
 883          * rates, so we need to fill the array ourselves.
 884          */
 885         wlc_phy_txpower_get(wlc->band->pi, &qdbm, &override);
 886         for (r = 0; r < WL_TX_POWER_RATES; r++) {
 887                 power.user_limit[r] = (u8) qdbm;
 888         }
 889
 890         power.local_max = wlc->txpwr_local_max * WLC_TXPWR_DB_FACTOR;
 891         power.local_constraint =
 892             wlc->txpwr_local_constraint * WLC_TXPWR_DB_FACTOR;
 893
 894         power.antgain[0] = wlc->bandstate[BAND_2G_INDEX]->antgain;
 895         power.antgain[1] = wlc->bandstate[BAND_5G_INDEX]->antgain;
 896
 897         wlc_channel_reg_limits(wlc->cmi, power.chanspec, &txpwr);
 898
 899 #if WL_TX_POWER_CCK_NUM != WLC_NUM_RATES_CCK
 900 #error "WL_TX_POWER_CCK_NUM != WLC_NUM_RATES_CCK"
 901 #endif
 902
 903         /* CCK tx power limits */
 904         for (c = 0, r = WL_TX_POWER_CCK_FIRST; c < WL_TX_POWER_CCK_NUM;
 905              c++, r++)
 906                 power.reg_limit[r] = txpwr.cck[c];
 907
 908 #if WL_TX_POWER_OFDM_NUM != WLC_NUM_RATES_OFDM
 909 #error "WL_TX_POWER_OFDM_NUM != WLC_NUM_RATES_OFDM"
 910 #endif
 911
 912         /* 20 MHz OFDM SISO tx power limits */
 913         for (c = 0, r = WL_TX_POWER_OFDM_FIRST; c < WL_TX_POWER_OFDM_NUM;
 914              c++, r++)
 915                 power.reg_limit[r] = txpwr.ofdm[c];
 916
 917         if (WLC_PHY_11N_CAP(wlc->band)) {
 918
 919                 /* 20 MHz OFDM CDD tx power limits */
 920                 for (c = 0, r = WL_TX_POWER_OFDM20_CDD_FIRST;
 921                      c < WL_TX_POWER_OFDM_NUM; c++, r++)
 922                         power.reg_limit[r] = txpwr.ofdm_cdd[c];
 923
 924                 /* 40 MHz OFDM SISO tx power limits */
 925                 for (c = 0, r = WL_TX_POWER_OFDM40_SISO_FIRST;
 926                      c < WL_TX_POWER_OFDM_NUM; c++, r++)
 927                         power.reg_limit[r] = txpwr.ofdm_40_siso[c];
 928
 929                 /* 40 MHz OFDM CDD tx power limits */
 930                 for (c = 0, r = WL_TX_POWER_OFDM40_CDD_FIRST;
 931                      c < WL_TX_POWER_OFDM_NUM; c++, r++)
 932                         power.reg_limit[r] = txpwr.ofdm_40_cdd[c];
 933
 934 #if WL_TX_POWER_MCS_1_STREAM_NUM != WLC_NUM_RATES_MCS_1_STREAM
 935 #error "WL_TX_POWER_MCS_1_STREAM_NUM != WLC_NUM_RATES_MCS_1_STREAM"
 936 #endif
 937
 938                 /* 20MHz MCS0-7 SISO tx power limits */
 939                 for (c = 0, r = WL_TX_POWER_MCS20_SISO_FIRST;
 940                      c < WLC_NUM_RATES_MCS_1_STREAM; c++, r++)
 941                         power.reg_limit[r] = txpwr.mcs_20_siso[c];
 942
 943                 /* 20MHz MCS0-7 CDD tx power limits */
 944                 for (c = 0, r = WL_TX_POWER_MCS20_CDD_FIRST;
 945                      c < WLC_NUM_RATES_MCS_1_STREAM; c++, r++)
 946                         power.reg_limit[r] = txpwr.mcs_20_cdd[c];
 947
 948                 /* 20MHz MCS0-7 STBC tx power limits */
 949                 for (c = 0, r = WL_TX_POWER_MCS20_STBC_FIRST;
 950                      c < WLC_NUM_RATES_MCS_1_STREAM; c++, r++)
 951                         power.reg_limit[r] = txpwr.mcs_20_stbc[c];
 952
 953                 /* 40MHz MCS0-7 SISO tx power limits */
 954                 for (c = 0, r = WL_TX_POWER_MCS40_SISO_FIRST;
 955                      c < WLC_NUM_RATES_MCS_1_STREAM; c++, r++)
 956                         power.reg_limit[r] = txpwr.mcs_40_siso[c];
 957
 958                 /* 40MHz MCS0-7 CDD tx power limits */
 959                 for (c = 0, r = WL_TX_POWER_MCS40_CDD_FIRST;
 960                      c < WLC_NUM_RATES_MCS_1_STREAM; c++, r++)
 961                         power.reg_limit[r] = txpwr.mcs_40_cdd[c];
 962
 963                 /* 40MHz MCS0-7 STBC tx power limits */
 964                 for (c = 0, r = WL_TX_POWER_MCS40_STBC_FIRST;
 965                      c < WLC_NUM_RATES_MCS_1_STREAM; c++, r++)
 966                         power.reg_limit[r] = txpwr.mcs_40_stbc[c];
 967
 968 #if WL_TX_POWER_MCS_2_STREAM_NUM != WLC_NUM_RATES_MCS_2_STREAM
 969 #error "WL_TX_POWER_MCS_2_STREAM_NUM != WLC_NUM_RATES_MCS_2_STREAM"
 970 #endif
 971
 972                 /* 20MHz MCS8-15 SDM tx power limits */
 973                 for (c = 0, r = WL_TX_POWER_MCS20_SDM_FIRST;
 974                      c < WLC_NUM_RATES_MCS_2_STREAM; c++, r++)
 975                         power.reg_limit[r] = txpwr.mcs_20_mimo[c];
 976
 977                 /* 40MHz MCS8-15 SDM tx power limits */
 978                 for (c = 0, r = WL_TX_POWER_MCS40_SDM_FIRST;
 979                      c < WLC_NUM_RATES_MCS_2_STREAM; c++, r++)
 980                         power.reg_limit[r] = txpwr.mcs_40_mimo[c];
 981
 982                 /* MCS 32 */
 983                 power.reg_limit[WL_TX_POWER_MCS_32] = txpwr.mcs32;
 984         }
 985
 986         wlc_phy_txpower_get_current(wlc->band->pi, &power,
 987                                     CHSPEC_CHANNEL(power.chanspec));
 988
 989         /* copy the tx_power_t struct to the return buffer,
 990          * or convert to a tx_power_legacy_t struct
 991          */
 992         if (!old_power) {
 993                 bcopy(&power, pwr, sizeof(tx_power_t));
 994         } else {
 995                 int band_idx = CHSPEC_IS2G(power.chanspec) ? 0 : 1;
 996
 997                 memset(old_power, 0, sizeof(tx_power_legacy_t));
 998
 999                 old_power->txpwr_local_max = power.local_max;
1000                 old_power->txpwr_local_constraint = power.local_constraint;
1001                 if (CHSPEC_IS2G(power.chanspec)) {
1002                         old_power->txpwr_chan_reg_max = txpwr.cck[0];
1003                         old_power->txpwr_est_Pout[band_idx] =
1004                             power.est_Pout_cck;
1005                         old_power->txpwr_est_Pout_gofdm = power.est_Pout[0];
1006                 } else {
1007                         old_power->txpwr_chan_reg_max = txpwr.ofdm[0];
1008                         old_power->txpwr_est_Pout[band_idx] = power.est_Pout[0];
1009                 }
1010                 old_power->txpwr_antgain[0] = power.antgain[0];
1011                 old_power->txpwr_antgain[1] = power.antgain[1];
1012
1013                 for (r = 0; r < NUM_PWRCTRL_RATES; r++) {
1014                         old_power->txpwr_band_max[r] = power.user_limit[r];
1015                         old_power->txpwr_limit[r] = power.reg_limit[r];
1016                         old_power->txpwr_target[band_idx][r] = power.target[r];
1017                         if (CHSPEC_IS2G(power.chanspec))
1018                                 old_power->txpwr_bphy_cck_max[r] =
1019                                     power.board_limit[r];
1020                         else
1021                                 old_power->txpwr_aphy_max[r] =
1022                                     power.board_limit[r];
1023                 }
1024         }
1025
1026         return 0;
1027 }
1028 #endif                          /* defined(BCMDBG) */
1029
1030 static u32 wlc_watchdog_backup_bi(struct wlc_info *wlc)
1031 {
1032         u32 bi;
1033         bi = 2 * wlc->cfg->current_bss->dtim_period *
1034             wlc->cfg->current_bss->beacon_period;
1035         if (wlc->bcn_li_dtim)
1036                 bi *= wlc->bcn_li_dtim;
1037         else if (wlc->bcn_li_bcn)
1038                 /* recalculate bi based on bcn_li_bcn */
1039                 bi = 2 * wlc->bcn_li_bcn * wlc->cfg->current_bss->beacon_period;
1040
1041         if (bi < 2 * TIMER_INTERVAL_WATCHDOG)
1042                 bi = 2 * TIMER_INTERVAL_WATCHDOG;
1043         return bi;
1044 }
1045
1046 /* Change to run the watchdog either from a periodic timer or from tbtt handler.
1047  * Call watchdog from tbtt handler if tbtt is true, watchdog timer otherwise.
1048  */
1049 void wlc_watchdog_upd(struct wlc_info *wlc, bool tbtt)
1050 {
1051         /* make sure changing watchdog driver is allowed */
1052         if (!wlc->pub->up || !wlc->pub->align_wd_tbtt)
1053                 return;
1054         if (!tbtt && wlc->WDarmed) {
1055                 wl_del_timer(wlc->wl, wlc->wdtimer);
1056                 wlc->WDarmed = false;
1057         }
1058
1059         /* stop watchdog timer and use tbtt interrupt to drive watchdog */
1060         if (tbtt && wlc->WDarmed) {
1061                 wl_del_timer(wlc->wl, wlc->wdtimer);
1062                 wlc->WDarmed = false;
1063                 wlc->WDlast = OSL_SYSUPTIME();
1064         }
1065         /* arm watchdog timer and drive the watchdog there */
1066         else if (!tbtt && !wlc->WDarmed) {
1067                 wl_add_timer(wlc->wl, wlc->wdtimer, TIMER_INTERVAL_WATCHDOG,
1068                              true);
1069                 wlc->WDarmed = true;
1070         }
1071         if (tbtt && !wlc->WDarmed) {
1072                 wl_add_timer(wlc->wl, wlc->wdtimer, wlc_watchdog_backup_bi(wlc),
1073                              true);
1074                 wlc->WDarmed = true;
1075         }
1076 }
1077
1078 ratespec_t wlc_lowest_basic_rspec(struct wlc_info *wlc, wlc_rateset_t *rs)
1079 {
1080         ratespec_t lowest_basic_rspec;
1081         uint i;
1082
1083         /* Use the lowest basic rate */
1084         lowest_basic_rspec = rs->rates[0] & RATE_MASK;
1085         for (i = 0; i < rs->count; i++) {
1086                 if (rs->rates[i] & WLC_RATE_FLAG) {
1087                         lowest_basic_rspec = rs->rates[i] & RATE_MASK;
1088                         break;
1089                 }
1090         }
1091 #if NCONF
1092         /* pick siso/cdd as default for OFDM (note no basic rate MCSs are supported yet) */
1093         if (IS_OFDM(lowest_basic_rspec)) {
1094                 lowest_basic_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
1095         }
1096 #endif
1097
1098         return lowest_basic_rspec;
1099 }
1100
1101 /* This function changes the phytxctl for beacon based on current beacon ratespec AND txant
1102  * setting as per this table:
1103  *  ratespec     CCK            ant = wlc->stf->txant
1104  *              OFDM            ant = 3
1105  */
1106 void wlc_beacon_phytxctl_txant_upd(struct wlc_info *wlc, ratespec_t bcn_rspec)
1107 {
1108         u16 phyctl;
1109         u16 phytxant = wlc->stf->phytxant;
1110         u16 mask = PHY_TXC_ANT_MASK;
1111
1112         /* for non-siso rates or default setting, use the available chains */
1113         if (WLC_PHY_11N_CAP(wlc->band)) {
1114                 phytxant = wlc_stf_phytxchain_sel(wlc, bcn_rspec);
1115         }
1116
1117         phyctl = wlc_read_shm(wlc, M_BCN_PCTLWD);
1118         phyctl = (phyctl & ~mask) | phytxant;
1119         wlc_write_shm(wlc, M_BCN_PCTLWD, phyctl);
1120 }
1121
1122 /* centralized protection config change function to simplify debugging, no consistency checking
1123  * this should be called only on changes to avoid overhead in periodic function
1124 */
1125 void wlc_protection_upd(struct wlc_info *wlc, uint idx, int val)
1126 {
1127         WL_TRACE("wlc_protection_upd: idx %d, val %d\n", idx, val);
1128
1129         switch (idx) {
1130         case WLC_PROT_G_SPEC:
1131                 wlc->protection->_g = (bool) val;
1132                 break;
1133         case WLC_PROT_G_OVR:
1134                 wlc->protection->g_override = (s8) val;
1135                 break;
1136         case WLC_PROT_G_USER:
1137                 wlc->protection->gmode_user = (u8) val;
1138                 break;
1139         case WLC_PROT_OVERLAP:
1140                 wlc->protection->overlap = (s8) val;
1141                 break;
1142         case WLC_PROT_N_USER:
1143                 wlc->protection->nmode_user = (s8) val;
1144                 break;
1145         case WLC_PROT_N_CFG:
1146                 wlc->protection->n_cfg = (s8) val;
1147                 break;
1148         case WLC_PROT_N_CFG_OVR:
1149                 wlc->protection->n_cfg_override = (s8) val;
1150                 break;
1151         case WLC_PROT_N_NONGF:
1152                 wlc->protection->nongf = (bool) val;
1153                 break;
1154         case WLC_PROT_N_NONGF_OVR:
1155                 wlc->protection->nongf_override = (s8) val;
1156                 break;
1157         case WLC_PROT_N_PAM_OVR:
1158                 wlc->protection->n_pam_override = (s8) val;
1159                 break;
1160         case WLC_PROT_N_OBSS:
1161                 wlc->protection->n_obss = (bool) val;
1162                 break;
1163
1164         default:
1165                 ASSERT(0);
1166                 break;
1167         }
1168
1169 }
1170
1171 static void wlc_ht_update_sgi_rx(struct wlc_info *wlc, int val)
1172 {
1173         wlc->ht_cap.cap &= ~(HT_CAP_SHORT_GI_20 | HT_CAP_SHORT_GI_40);
1174         wlc->ht_cap.cap |= (val & WLC_N_SGI_20) ? HT_CAP_SHORT_GI_20 : 0;
1175         wlc->ht_cap.cap |= (val & WLC_N_SGI_40) ? HT_CAP_SHORT_GI_40 : 0;
1176
1177         if (wlc->pub->up) {
1178                 wlc_update_beacon(wlc);
1179                 wlc_update_probe_resp(wlc, true);
1180         }
1181 }
1182
1183 static void wlc_ht_update_ldpc(struct wlc_info *wlc, s8 val)
1184 {
1185         wlc->stf->ldpc = val;
1186
1187         wlc->ht_cap.cap &= ~HT_CAP_LDPC_CODING;
1188         if (wlc->stf->ldpc != OFF)
1189                 wlc->ht_cap.cap |= HT_CAP_LDPC_CODING;
1190
1191         if (wlc->pub->up) {
1192                 wlc_update_beacon(wlc);
1193                 wlc_update_probe_resp(wlc, true);
1194                 wlc_phy_ldpc_override_set(wlc->band->pi, (val ? true : false));
1195         }
1196 }
1197
1198 /*
1199  * ucode, hwmac update
1200  *    Channel dependent updates for ucode and hw
1201  */
1202 static void wlc_ucode_mac_upd(struct wlc_info *wlc)
1203 {
1204         /* enable or disable any active IBSSs depending on whether or not
1205          * we are on the home channel
1206          */
1207         if (wlc->home_chanspec == WLC_BAND_PI_RADIO_CHANSPEC) {
1208                 if (wlc->pub->associated) {
1209                         /* BMAC_NOTE: This is something that should be fixed in ucode inits.
1210                          * I think that the ucode inits set up the bcn templates and shm values
1211                          * with a bogus beacon. This should not be done in the inits. If ucode needs
1212                          * to set up a beacon for testing, the test routines should write it down,
1213                          * not expect the inits to populate a bogus beacon.
1214                          */
1215                         if (WLC_PHY_11N_CAP(wlc->band)) {
1216                                 wlc_write_shm(wlc, M_BCN_TXTSF_OFFSET,
1217                                               wlc->band->bcntsfoff);
1218                         }
1219                 }
1220         } else {
1221                 /* disable an active IBSS if we are not on the home channel */
1222         }
1223
1224         /* update the various promisc bits */
1225         wlc_mac_bcn_promisc(wlc);
1226         wlc_mac_promisc(wlc);
1227 }
1228
1229 static void wlc_bandinit_ordered(struct wlc_info *wlc, chanspec_t chanspec)
1230 {
1231         wlc_rateset_t default_rateset;
1232         uint parkband;
1233         uint i, band_order[2];
1234
1235         WL_TRACE("wl%d: wlc_bandinit_ordered\n", wlc->pub->unit);
1236         /*
1237          * We might have been bandlocked during down and the chip power-cycled (hibernate).
1238          * figure out the right band to park on
1239          */
1240         if (wlc->bandlocked || NBANDS(wlc) == 1) {
1241                 ASSERT(CHSPEC_WLCBANDUNIT(chanspec) == wlc->band->bandunit);
1242
1243                 parkband = wlc->band->bandunit; /* updated in wlc_bandlock() */
1244                 band_order[0] = band_order[1] = parkband;
1245         } else {
1246                 /* park on the band of the specified chanspec */
1247                 parkband = CHSPEC_WLCBANDUNIT(chanspec);
1248
1249                 /* order so that parkband initialize last */
1250                 band_order[0] = parkband ^ 1;
1251                 band_order[1] = parkband;
1252         }
1253
1254         /* make each band operational, software state init */
1255         for (i = 0; i < NBANDS(wlc); i++) {
1256                 uint j = band_order[i];
1257
1258                 wlc->band = wlc->bandstate[j];
1259
1260                 wlc_default_rateset(wlc, &default_rateset);
1261
1262                 /* fill in hw_rate */
1263                 wlc_rateset_filter(&default_rateset, &wlc->band->hw_rateset,
1264                                    false, WLC_RATES_CCK_OFDM, RATE_MASK,
1265                                    (bool) N_ENAB(wlc->pub));
1266
1267                 /* init basic rate lookup */
1268                 wlc_rate_lookup_init(wlc, &default_rateset);
1269         }
1270
1271         /* sync up phy/radio chanspec */
1272         wlc_set_phy_chanspec(wlc, chanspec);
1273 }
1274
1275 /* band-specific init */
1276 static void WLBANDINITFN(wlc_bsinit) (struct wlc_info *wlc)
1277 {
1278         WL_TRACE("wl%d: wlc_bsinit: bandunit %d\n",
1279                  wlc->pub->unit, wlc->band->bandunit);
1280
1281         /* write ucode ACK/CTS rate table */
1282         wlc_set_ratetable(wlc);
1283
1284         /* update some band specific mac configuration */
1285         wlc_ucode_mac_upd(wlc);
1286
1287         /* init antenna selection */
1288         if (WLANTSEL_ENAB(wlc))
1289                 wlc_antsel_init(wlc->asi);
1290
1291 }
1292
1293 /* switch to and initialize new band */
1294 static void WLBANDINITFN(wlc_setband) (struct wlc_info *wlc, uint bandunit)
1295 {
1296         int idx;
1297         wlc_bsscfg_t *cfg;
1298
1299         ASSERT(NBANDS(wlc) > 1);
1300         ASSERT(!wlc->bandlocked);
1301         ASSERT(bandunit != wlc->band->bandunit || wlc->bandinit_pending);
1302
1303         wlc->band = wlc->bandstate[bandunit];
1304
1305         if (!wlc->pub->up)
1306                 return;
1307
1308         /* wait for at least one beacon before entering sleeping state */
1309         wlc->PMawakebcn = true;
1310         FOREACH_AS_STA(wlc, idx, cfg)
1311             cfg->PMawakebcn = true;
1312         wlc_set_ps_ctrl(wlc);
1313
1314         /* band-specific initializations */
1315         wlc_bsinit(wlc);
1316 }
1317
1318 /* Initialize a WME Parameter Info Element with default STA parameters from WMM Spec, Table 12 */
1319 void wlc_wme_initparams_sta(struct wlc_info *wlc, wme_param_ie_t *pe)
1320 {
1321         static const wme_param_ie_t stadef = {
1322                 WME_OUI,
1323                 WME_TYPE,
1324                 WME_SUBTYPE_PARAM_IE,
1325                 WME_VER,
1326                 0,
1327                 0,
1328                 {
1329                  {EDCF_AC_BE_ACI_STA, EDCF_AC_BE_ECW_STA,
1330                   HTOL16(EDCF_AC_BE_TXOP_STA)},
1331                  {EDCF_AC_BK_ACI_STA, EDCF_AC_BK_ECW_STA,
1332                   HTOL16(EDCF_AC_BK_TXOP_STA)},
1333                  {EDCF_AC_VI_ACI_STA, EDCF_AC_VI_ECW_STA,
1334                   HTOL16(EDCF_AC_VI_TXOP_STA)},
1335                  {EDCF_AC_VO_ACI_STA, EDCF_AC_VO_ECW_STA,
1336                   HTOL16(EDCF_AC_VO_TXOP_STA)}
1337                  }
1338         };
1339
1340         ASSERT(sizeof(*pe) == WME_PARAM_IE_LEN);
1341         memcpy(pe, &stadef, sizeof(*pe));
1342 }
1343
1344 void wlc_wme_setparams(struct wlc_info *wlc, u16 aci, void *arg, bool suspend)
1345 {
1346         int i;
1347         shm_acparams_t acp_shm;
1348         u16 *shm_entry;
1349         struct ieee80211_tx_queue_params *params = arg;
1350
1351         ASSERT(wlc);
1352
1353         /* Only apply params if the core is out of reset and has clocks */
1354         if (!wlc->clk) {
1355                 WL_ERROR("wl%d: %s : no-clock\n", wlc->pub->unit, __func__);
1356                 return;
1357         }
1358
1359         /*
1360          * AP uses AC params from wme_param_ie_ap.
1361          * AP advertises AC params from wme_param_ie.
1362          * STA uses AC params from wme_param_ie.
1363          */
1364
1365         wlc->wme_admctl = 0;
1366
1367         do {
1368                 memset((char *)&acp_shm, 0, sizeof(shm_acparams_t));
1369                 /* find out which ac this set of params applies to */
1370                 ASSERT(aci < AC_COUNT);
1371                 /* set the admission control policy for this AC */
1372                 /* wlc->wme_admctl |= 1 << aci; *//* should be set ??  seems like off by default */
1373
1374                 /* fill in shm ac params struct */
1375                 acp_shm.txop = ltoh16(params->txop);
1376                 /* convert from units of 32us to us for ucode */
1377                 wlc->edcf_txop[aci & 0x3] = acp_shm.txop =
1378                     EDCF_TXOP2USEC(acp_shm.txop);
1379                 acp_shm.aifs = (params->aifs & EDCF_AIFSN_MASK);
1380
1381                 if (aci == AC_VI && acp_shm.txop == 0
1382                     && acp_shm.aifs < EDCF_AIFSN_MAX)
1383                         acp_shm.aifs++;
1384
1385                 if (acp_shm.aifs < EDCF_AIFSN_MIN
1386                     || acp_shm.aifs > EDCF_AIFSN_MAX) {
1387                         WL_ERROR("wl%d: wlc_edcf_setparams: bad aifs %d\n",
1388                                  wlc->pub->unit, acp_shm.aifs);
1389                         continue;
1390                 }
1391
1392                 acp_shm.cwmin = params->cw_min;
1393                 acp_shm.cwmax = params->cw_max;
1394                 acp_shm.cwcur = acp_shm.cwmin;
1395                 acp_shm.bslots =
1396                     R_REG(wlc->osh, &wlc->regs->tsf_random) & acp_shm.cwcur;
1397                 acp_shm.reggap = acp_shm.bslots + acp_shm.aifs;
1398                 /* Indicate the new params to the ucode */
1399                 acp_shm.status = wlc_read_shm(wlc, (M_EDCF_QINFO +
1400                                                     wme_shmemacindex(aci) *
1401                                                     M_EDCF_QLEN +
1402                                                     M_EDCF_STATUS_OFF));
1403                 acp_shm.status |= WME_STATUS_NEWAC;
1404
1405                 /* Fill in shm acparam table */
1406                 shm_entry = (u16 *) &acp_shm;
1407                 for (i = 0; i < (int)sizeof(shm_acparams_t); i += 2)
1408                         wlc_write_shm(wlc,
1409                                       M_EDCF_QINFO +
1410                                       wme_shmemacindex(aci) * M_EDCF_QLEN + i,
1411                                       *shm_entry++);
1412
1413         } while (0);
1414
1415         if (suspend)
1416                 wlc_suspend_mac_and_wait(wlc);
1417
1418         if (suspend)
1419                 wlc_enable_mac(wlc);
1420
1421 }
1422
1423 void wlc_edcf_setparams(wlc_bsscfg_t *cfg, bool suspend)
1424 {
1425         struct wlc_info *wlc = cfg->wlc;
1426         uint aci, i, j;
1427         edcf_acparam_t *edcf_acp;
1428         shm_acparams_t acp_shm;
1429         u16 *shm_entry;
1430
1431         ASSERT(cfg);
1432         ASSERT(wlc);
1433
1434         /* Only apply params if the core is out of reset and has clocks */
1435         if (!wlc->clk)
1436                 return;
1437
1438         /*
1439          * AP uses AC params from wme_param_ie_ap.
1440          * AP advertises AC params from wme_param_ie.
1441          * STA uses AC params from wme_param_ie.
1442          */
1443
1444         edcf_acp = (edcf_acparam_t *) &wlc->wme_param_ie.acparam[0];
1445
1446         wlc->wme_admctl = 0;
1447
1448         for (i = 0; i < AC_COUNT; i++, edcf_acp++) {
1449                 memset((char *)&acp_shm, 0, sizeof(shm_acparams_t));
1450                 /* find out which ac this set of params applies to */
1451                 aci = (edcf_acp->ACI & EDCF_ACI_MASK) >> EDCF_ACI_SHIFT;
1452                 ASSERT(aci < AC_COUNT);
1453                 /* set the admission control policy for this AC */
1454                 if (edcf_acp->ACI & EDCF_ACM_MASK) {
1455                         wlc->wme_admctl |= 1 << aci;
1456                 }
1457
1458                 /* fill in shm ac params struct */
1459                 acp_shm.txop = ltoh16(edcf_acp->TXOP);
1460                 /* convert from units of 32us to us for ucode */
1461                 wlc->edcf_txop[aci] = acp_shm.txop =
1462                     EDCF_TXOP2USEC(acp_shm.txop);
1463                 acp_shm.aifs = (edcf_acp->ACI & EDCF_AIFSN_MASK);
1464
1465                 if (aci == AC_VI && acp_shm.txop == 0
1466                     && acp_shm.aifs < EDCF_AIFSN_MAX)
1467                         acp_shm.aifs++;
1468
1469                 if (acp_shm.aifs < EDCF_AIFSN_MIN
1470                     || acp_shm.aifs > EDCF_AIFSN_MAX) {
1471                         WL_ERROR("wl%d: wlc_edcf_setparams: bad aifs %d\n",
1472                                  wlc->pub->unit, acp_shm.aifs);
1473                         continue;
1474                 }
1475
1476                 /* CWmin = 2^(ECWmin) - 1 */
1477                 acp_shm.cwmin = EDCF_ECW2CW(edcf_acp->ECW & EDCF_ECWMIN_MASK);
1478                 /* CWmax = 2^(ECWmax) - 1 */
1479                 acp_shm.cwmax = EDCF_ECW2CW((edcf_acp->ECW & EDCF_ECWMAX_MASK)
1480                                             >> EDCF_ECWMAX_SHIFT);
1481                 acp_shm.cwcur = acp_shm.cwmin;
1482                 acp_shm.bslots =
1483                     R_REG(wlc->osh, &wlc->regs->tsf_random) & acp_shm.cwcur;
1484                 acp_shm.reggap = acp_shm.bslots + acp_shm.aifs;
1485                 /* Indicate the new params to the ucode */
1486                 acp_shm.status = wlc_read_shm(wlc, (M_EDCF_QINFO +
1487                                                     wme_shmemacindex(aci) *
1488                                                     M_EDCF_QLEN +
1489                                                     M_EDCF_STATUS_OFF));
1490                 acp_shm.status |= WME_STATUS_NEWAC;
1491
1492                 /* Fill in shm acparam table */
1493                 shm_entry = (u16 *) &acp_shm;
1494                 for (j = 0; j < (int)sizeof(shm_acparams_t); j += 2)
1495                         wlc_write_shm(wlc,
1496                                       M_EDCF_QINFO +
1497                                       wme_shmemacindex(aci) * M_EDCF_QLEN + j,
1498                                       *shm_entry++);
1499         }
1500
1501         if (suspend)
1502                 wlc_suspend_mac_and_wait(wlc);
1503
1504         if (AP_ENAB(wlc->pub) && WME_ENAB(wlc->pub)) {
1505                 wlc_update_beacon(wlc);
1506                 wlc_update_probe_resp(wlc, false);
1507         }
1508
1509         if (suspend)
1510                 wlc_enable_mac(wlc);
1511
1512 }
1513
1514 bool wlc_timers_init(struct wlc_info *wlc, int unit)
1515 {
1516         wlc->wdtimer = wl_init_timer(wlc->wl, wlc_watchdog_by_timer,
1517                 wlc, "watchdog");
1518         if (!wlc->wdtimer) {
1519                 WL_ERROR("wl%d:  wl_init_timer for wdtimer failed\n", unit);
1520                 goto fail;
1521         }
1522
1523         wlc->radio_timer = wl_init_timer(wlc->wl, wlc_radio_timer,
1524                 wlc, "radio");
1525         if (!wlc->radio_timer) {
1526                 WL_ERROR("wl%d:  wl_init_timer for radio_timer failed\n", unit);
1527                 goto fail;
1528         }
1529
1530         return true;
1531
1532  fail:
1533         return false;
1534 }
1535
1536 /*
1537  * Initialize wlc_info default values ...
1538  * may get overrides later in this function
1539  */
1540 void wlc_info_init(struct wlc_info *wlc, int unit)
1541 {
1542         int i;
1543         /* Assume the device is there until proven otherwise */
1544         wlc->device_present = true;
1545
1546         /* set default power output percentage to 100 percent */
1547         wlc->txpwr_percent = 100;
1548
1549         /* Save our copy of the chanspec */
1550         wlc->chanspec = CH20MHZ_CHSPEC(1);
1551
1552         /* initialize CCK preamble mode to unassociated state */
1553         wlc->shortpreamble = false;
1554
1555         wlc->legacy_probe = true;
1556
1557         /* various 802.11g modes */
1558         wlc->shortslot = false;
1559         wlc->shortslot_override = WLC_SHORTSLOT_AUTO;
1560
1561         wlc->barker_overlap_control = true;
1562         wlc->barker_preamble = WLC_BARKER_SHORT_ALLOWED;
1563         wlc->txburst_limit_override = AUTO;
1564
1565         wlc_protection_upd(wlc, WLC_PROT_G_OVR, WLC_PROTECTION_AUTO);
1566         wlc_protection_upd(wlc, WLC_PROT_G_SPEC, false);
1567
1568         wlc_protection_upd(wlc, WLC_PROT_N_CFG_OVR, WLC_PROTECTION_AUTO);
1569         wlc_protection_upd(wlc, WLC_PROT_N_CFG, WLC_N_PROTECTION_OFF);
1570         wlc_protection_upd(wlc, WLC_PROT_N_NONGF_OVR, WLC_PROTECTION_AUTO);
1571         wlc_protection_upd(wlc, WLC_PROT_N_NONGF, false);
1572         wlc_protection_upd(wlc, WLC_PROT_N_PAM_OVR, AUTO);
1573
1574         wlc_protection_upd(wlc, WLC_PROT_OVERLAP, WLC_PROTECTION_CTL_OVERLAP);
1575
1576         /* 802.11g draft 4.0 NonERP elt advertisement */
1577         wlc->include_legacy_erp = true;
1578
1579         wlc->stf->ant_rx_ovr = ANT_RX_DIV_DEF;
1580         wlc->stf->txant = ANT_TX_DEF;
1581
1582         wlc->prb_resp_timeout = WLC_PRB_RESP_TIMEOUT;
1583
1584         wlc->usr_fragthresh = DOT11_DEFAULT_FRAG_LEN;
1585         for (i = 0; i < NFIFO; i++)
1586                 wlc->fragthresh[i] = DOT11_DEFAULT_FRAG_LEN;
1587         wlc->RTSThresh = DOT11_DEFAULT_RTS_LEN;
1588
1589         /* default rate fallback retry limits */
1590         wlc->SFBL = RETRY_SHORT_FB;
1591         wlc->LFBL = RETRY_LONG_FB;
1592
1593         /* default mac retry limits */
1594         wlc->SRL = RETRY_SHORT_DEF;
1595         wlc->LRL = RETRY_LONG_DEF;
1596
1597         /* init PM state */
1598         wlc->PM = PM_OFF;       /* User's setting of PM mode through IOCTL */
1599         wlc->PM_override = false;       /* Prevents from going to PM if our AP is 'ill' */
1600         wlc->PMenabled = false; /* Current PM state */
1601         wlc->PMpending = false; /* Tracks whether STA indicated PM in the last attempt */
1602         wlc->PMblocked = false; /* To allow blocking going into PM during RM and scans */
1603
1604         /* In WMM Auto mode, PM is allowed if association is a UAPSD association */
1605         wlc->WME_PM_blocked = false;
1606
1607         /* Init wme queuing method */
1608         wlc->wme_prec_queuing = false;
1609
1610         /* Overrides for the core to stay awake under zillion conditions Look for STAY_AWAKE */
1611         wlc->wake = false;
1612         /* Are we waiting for a response to PS-Poll that we sent */
1613         wlc->PSpoll = false;
1614
1615         /* APSD defaults */
1616         wlc->wme_apsd = true;
1617         wlc->apsd_sta_usp = false;
1618         wlc->apsd_trigger_timeout = 0;  /* disable the trigger timer */
1619         wlc->apsd_trigger_ac = AC_BITMAP_ALL;
1620
1621         /* Set flag to indicate that hw keys should be used when available. */
1622         wlc->wsec_swkeys = false;
1623
1624         /* init the 4 static WEP default keys */
1625         for (i = 0; i < WSEC_MAX_DEFAULT_KEYS; i++) {
1626                 wlc->wsec_keys[i] = wlc->wsec_def_keys[i];
1627                 wlc->wsec_keys[i]->idx = (u8) i;
1628         }
1629
1630         wlc->_regulatory_domain = false;        /* 802.11d */
1631
1632         /* WME QoS mode is Auto by default */
1633         wlc->pub->_wme = AUTO;
1634
1635 #ifdef BCMSDIODEV_ENABLED
1636         wlc->pub->_priofc = true;       /* enable priority flow control for sdio dongle */
1637 #endif
1638
1639         wlc->pub->_ampdu = AMPDU_AGG_HOST;
1640         wlc->pub->bcmerror = 0;
1641         wlc->ibss_allowed = true;
1642         wlc->ibss_coalesce_allowed = true;
1643         wlc->pub->_coex = ON;
1644
1645         /* intialize mpc delay */
1646         wlc->mpc_delay_off = wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
1647
1648         wlc->pr80838_war = true;
1649 }
1650
1651 static bool wlc_state_bmac_sync(struct wlc_info *wlc)
1652 {
1653         wlc_bmac_state_t state_bmac;
1654
1655         if (wlc_bmac_state_get(wlc->hw, &state_bmac) != 0)
1656                 return false;
1657
1658         wlc->machwcap = state_bmac.machwcap;
1659         wlc_protection_upd(wlc, WLC_PROT_N_PAM_OVR,
1660                            (s8) state_bmac.preamble_ovr);
1661
1662         return true;
1663 }
1664
1665 static uint wlc_attach_module(struct wlc_info *wlc)
1666 {
1667         uint err = 0;
1668         uint unit;
1669         unit = wlc->pub->unit;
1670
1671         wlc->asi = wlc_antsel_attach(wlc, wlc->osh, wlc->pub, wlc->hw);
1672         if (wlc->asi == NULL) {
1673                 WL_ERROR("wl%d: wlc_attach: wlc_antsel_attach failed\n", unit);
1674                 err = 44;
1675                 goto fail;
1676         }
1677
1678         wlc->ampdu = wlc_ampdu_attach(wlc);
1679         if (wlc->ampdu == NULL) {
1680                 WL_ERROR("wl%d: wlc_attach: wlc_ampdu_attach failed\n", unit);
1681                 err = 50;
1682                 goto fail;
1683         }
1684
1685         /* Initialize event queue; needed before following calls */
1686         wlc->eventq =
1687             wlc_eventq_attach(wlc->pub, wlc, wlc->wl, wlc_process_eventq);
1688         if (wlc->eventq == NULL) {
1689                 WL_ERROR("wl%d: wlc_attach: wlc_eventq_attachfailed\n", unit);
1690                 err = 57;
1691                 goto fail;
1692         }
1693
1694         if ((wlc_stf_attach(wlc) != 0)) {
1695                 WL_ERROR("wl%d: wlc_attach: wlc_stf_attach failed\n", unit);
1696                 err = 68;
1697                 goto fail;
1698         }
1699  fail:
1700         return err;
1701 }
1702
1703 struct wlc_pub *wlc_pub(void *wlc)
1704 {
1705         return ((struct wlc_info *) wlc)->pub;
1706 }
1707
1708 #define CHIP_SUPPORTS_11N(wlc)  1
1709
1710 /*
1711  * The common driver entry routine. Error codes should be unique
1712  */
1713 void *wlc_attach(void *wl, u16 vendor, u16 device, uint unit, bool piomode,
1714                  struct osl_info *osh, void *regsva, uint bustype,
1715                  void *btparam, uint *perr)
1716 {
1717         struct wlc_info *wlc;
1718         uint err = 0;
1719         uint j;
1720         struct wlc_pub *pub;
1721         wlc_txq_info_t *qi;
1722         uint n_disabled;
1723
1724         WL_NONE("wl%d: %s: vendor 0x%x device 0x%x\n",
1725                 unit, __func__, vendor, device);
1726
1727         ASSERT(WSEC_MAX_RCMTA_KEYS <= WSEC_MAX_KEYS);
1728         ASSERT(WSEC_MAX_DEFAULT_KEYS == WLC_DEFAULT_KEYS);
1729
1730         /* some code depends on packed structures */
1731         ASSERT(sizeof(struct ether_addr) == ETH_ALEN);
1732         ASSERT(sizeof(struct ether_header) == ETH_HLEN);
1733         ASSERT(sizeof(d11regs_t) == SI_CORE_SIZE);
1734         ASSERT(sizeof(ofdm_phy_hdr_t) == D11_PHY_HDR_LEN);
1735         ASSERT(sizeof(cck_phy_hdr_t) == D11_PHY_HDR_LEN);
1736         ASSERT(sizeof(d11txh_t) == D11_TXH_LEN);
1737         ASSERT(sizeof(d11rxhdr_t) == RXHDR_LEN);
1738         ASSERT(sizeof(struct dot11_header) == DOT11_A4_HDR_LEN);
1739         ASSERT(sizeof(struct dot11_rts_frame) == DOT11_RTS_LEN);
1740         ASSERT(sizeof(struct dot11_management_header) == DOT11_MGMT_HDR_LEN);
1741         ASSERT(sizeof(struct dot11_bcn_prb) == DOT11_BCN_PRB_LEN);
1742         ASSERT(sizeof(tx_status_t) == TXSTATUS_LEN);
1743         ASSERT(sizeof(ht_cap_ie_t) == HT_CAP_IE_LEN);
1744 #ifdef BRCM_FULLMAC
1745         ASSERT(offsetof(wl_scan_params_t, channel_list) ==
1746                WL_SCAN_PARAMS_FIXED_SIZE);
1747 #endif
1748         ASSERT(IS_ALIGNED(offsetof(wsec_key_t, data), sizeof(u32)));
1749         ASSERT(ISPOWEROF2(MA_WINDOW_SZ));
1750
1751         ASSERT(sizeof(wlc_d11rxhdr_t) <= WL_HWRXOFF);
1752
1753         /*
1754          * Number of replay counters value used in WPA IE must match # rxivs
1755          * supported in wsec_key_t struct. See 802.11i/D3.0 sect. 7.3.2.17
1756          * 'RSN Information Element' figure 8 for this mapping.
1757          */
1758         ASSERT((WPA_CAP_16_REPLAY_CNTRS == WLC_REPLAY_CNTRS_VALUE
1759                 && 16 == WLC_NUMRXIVS)
1760                || (WPA_CAP_4_REPLAY_CNTRS == WLC_REPLAY_CNTRS_VALUE
1761                    && 4 == WLC_NUMRXIVS));
1762
1763         /* allocate struct wlc_info state and its substructures */
1764         wlc = (struct wlc_info *) wlc_attach_malloc(osh, unit, &err, device);
1765         if (wlc == NULL)
1766                 goto fail;
1767         wlc->osh = osh;
1768         pub = wlc->pub;
1769
1770 #if defined(BCMDBG)
1771         wlc_info_dbg = wlc;
1772 #endif
1773
1774         wlc->band = wlc->bandstate[0];
1775         wlc->core = wlc->corestate;
1776         wlc->wl = wl;
1777         pub->unit = unit;
1778         pub->osh = osh;
1779         wlc->btparam = btparam;
1780         pub->_piomode = piomode;
1781         wlc->bandinit_pending = false;
1782         /* By default restrict TKIP associations from 11n STA's */
1783         wlc->ht_wsec_restriction = WLC_HT_TKIP_RESTRICT;
1784
1785         /* populate struct wlc_info with default values  */
1786         wlc_info_init(wlc, unit);
1787
1788         /* update sta/ap related parameters */
1789         wlc_ap_upd(wlc);
1790
1791         /* 11n_disable nvram */
1792         n_disabled = getintvar(pub->vars, "11n_disable");
1793
1794         /* register a module (to handle iovars) */
1795         wlc_module_register(wlc->pub, wlc_iovars, "wlc_iovars", wlc,
1796                             wlc_doiovar, NULL, NULL);
1797
1798         /* low level attach steps(all hw accesses go inside, no more in rest of the attach) */
1799         err = wlc_bmac_attach(wlc, vendor, device, unit, piomode, osh, regsva,
1800                               bustype, btparam);
1801         if (err)
1802                 goto fail;
1803
1804         /* for some states, due to different info pointer(e,g, wlc, wlc_hw) or master/slave split,
1805          * HIGH driver(both monolithic and HIGH_ONLY) needs to sync states FROM BMAC portion driver
1806          */
1807         if (!wlc_state_bmac_sync(wlc)) {
1808                 err = 20;
1809                 goto fail;
1810         }
1811
1812         pub->phy_11ncapable = WLC_PHY_11N_CAP(wlc->band);
1813
1814         /* propagate *vars* from BMAC driver to high driver */
1815         wlc_bmac_copyfrom_vars(wlc->hw, &pub->vars, &wlc->vars_size);
1816
1817
1818         /* set maximum allowed duty cycle */
1819         wlc->tx_duty_cycle_ofdm =
1820             (u16) getintvar(pub->vars, "tx_duty_cycle_ofdm");
1821         wlc->tx_duty_cycle_cck =
1822             (u16) getintvar(pub->vars, "tx_duty_cycle_cck");
1823
1824         wlc_stf_phy_chain_calc(wlc);
1825
1826         /* txchain 1: txant 0, txchain 2: txant 1 */
1827         if (WLCISNPHY(wlc->band) && (wlc->stf->txstreams == 1))
1828                 wlc->stf->txant = wlc->stf->hw_txchain - 1;
1829
1830         /* push to BMAC driver */
1831         wlc_phy_stf_chain_init(wlc->band->pi, wlc->stf->hw_txchain,
1832                                wlc->stf->hw_rxchain);
1833
1834         /* pull up some info resulting from the low attach */
1835         {
1836                 int i;
1837                 for (i = 0; i < NFIFO; i++)
1838                         wlc->core->txavail[i] = wlc->hw->txavail[i];
1839         }
1840
1841         wlc_bmac_hw_etheraddr(wlc->hw, &wlc->perm_etheraddr);
1842
1843         bcopy((char *)&wlc->perm_etheraddr, (char *)&pub->cur_etheraddr,
1844               ETH_ALEN);
1845
1846         for (j = 0; j < NBANDS(wlc); j++) {
1847                 /* Use band 1 for single band 11a */
1848                 if (IS_SINGLEBAND_5G(wlc->deviceid))
1849                         j = BAND_5G_INDEX;
1850
1851                 wlc->band = wlc->bandstate[j];
1852
1853                 if (!wlc_attach_stf_ant_init(wlc)) {
1854                         err = 24;
1855                         goto fail;
1856                 }
1857
1858                 /* default contention windows size limits */
1859                 wlc->band->CWmin = APHY_CWMIN;
1860                 wlc->band->CWmax = PHY_CWMAX;
1861
1862                 /* init gmode value */
1863                 if (BAND_2G(wlc->band->bandtype)) {
1864                         wlc->band->gmode = GMODE_AUTO;
1865                         wlc_protection_upd(wlc, WLC_PROT_G_USER,
1866                                            wlc->band->gmode);
1867                 }
1868
1869                 /* init _n_enab supported mode */
1870                 if (WLC_PHY_11N_CAP(wlc->band) && CHIP_SUPPORTS_11N(wlc)) {
1871                         if (n_disabled & WLFEATURE_DISABLE_11N) {
1872                                 pub->_n_enab = OFF;
1873                                 wlc_protection_upd(wlc, WLC_PROT_N_USER, OFF);
1874                         } else {
1875                                 pub->_n_enab = SUPPORT_11N;
1876                                 wlc_protection_upd(wlc, WLC_PROT_N_USER,
1877                                                    ((pub->_n_enab ==
1878                                                      SUPPORT_11N) ? WL_11N_2x2 :
1879                                                     WL_11N_3x3));
1880                         }
1881                 }
1882
1883                 /* init per-band default rateset, depend on band->gmode */
1884                 wlc_default_rateset(wlc, &wlc->band->defrateset);
1885
1886                 /* fill in hw_rateset (used early by WLC_SET_RATESET) */
1887                 wlc_rateset_filter(&wlc->band->defrateset,
1888                                    &wlc->band->hw_rateset, false,
1889                                    WLC_RATES_CCK_OFDM, RATE_MASK,
1890                                    (bool) N_ENAB(wlc->pub));
1891         }
1892
1893         /* update antenna config due to wlc->stf->txant/txchain/ant_rx_ovr change */
1894         wlc_stf_phy_txant_upd(wlc);
1895
1896         /* attach each modules */
1897         err = wlc_attach_module(wlc);
1898         if (err != 0)
1899                 goto fail;
1900
1901         if (!wlc_timers_init(wlc, unit)) {
1902                 WL_ERROR("wl%d: %s: wlc_init_timer failed\n", unit, __func__);
1903                 err = 32;
1904                 goto fail;
1905         }
1906
1907         /* depend on rateset, gmode */
1908         wlc->cmi = wlc_channel_mgr_attach(wlc);
1909         if (!wlc->cmi) {
1910                 WL_ERROR("wl%d: %s: wlc_channel_mgr_attach failed\n",
1911                          unit, __func__);
1912                 err = 33;
1913                 goto fail;
1914         }
1915
1916         /* init default when all parameters are ready, i.e. ->rateset */
1917         wlc_bss_default_init(wlc);
1918
1919         /*
1920          * Complete the wlc default state initializations..
1921          */
1922
1923         /* allocate our initial queue */
1924         qi = wlc_txq_alloc(wlc, osh);
1925         if (qi == NULL) {
1926                 WL_ERROR("wl%d: %s: failed to malloc tx queue\n",
1927                          unit, __func__);
1928                 err = 100;
1929                 goto fail;
1930         }
1931         wlc->active_queue = qi;
1932
1933         wlc->bsscfg[0] = wlc->cfg;
1934         wlc->cfg->_idx = 0;
1935         wlc->cfg->wlc = wlc;
1936         pub->txmaxpkts = MAXTXPKTS;
1937
1938         WLCNTSET(pub->_cnt->version, WL_CNT_T_VERSION);
1939         WLCNTSET(pub->_cnt->length, sizeof(wl_cnt_t));
1940
1941         WLCNTSET(pub->_wme_cnt->version, WL_WME_CNT_VERSION);
1942         WLCNTSET(pub->_wme_cnt->length, sizeof(wl_wme_cnt_t));
1943
1944         wlc_wme_initparams_sta(wlc, &wlc->wme_param_ie);
1945
1946         wlc->mimoft = FT_HT;
1947         wlc->ht_cap.cap = HT_CAP;
1948         if (HT_ENAB(wlc->pub))
1949                 wlc->stf->ldpc = AUTO;
1950
1951         wlc->mimo_40txbw = AUTO;
1952         wlc->ofdm_40txbw = AUTO;
1953         wlc->cck_40txbw = AUTO;
1954         wlc_update_mimo_band_bwcap(wlc, WLC_N_BW_20IN2G_40IN5G);
1955
1956         /* Enable setting the RIFS Mode bit by default in HT Info IE */
1957         wlc->rifs_advert = AUTO;
1958
1959         /* Set default values of SGI */
1960         if (WLC_SGI_CAP_PHY(wlc)) {
1961                 wlc_ht_update_sgi_rx(wlc, (WLC_N_SGI_20 | WLC_N_SGI_40));
1962                 wlc->sgi_tx = AUTO;
1963         } else if (WLCISSSLPNPHY(wlc->band)) {
1964                 wlc_ht_update_sgi_rx(wlc, (WLC_N_SGI_20 | WLC_N_SGI_40));
1965                 wlc->sgi_tx = AUTO;
1966         } else {
1967                 wlc_ht_update_sgi_rx(wlc, 0);
1968                 wlc->sgi_tx = OFF;
1969         }
1970
1971         /* *******nvram 11n config overrides Start ********* */
1972
1973         /* apply the sgi override from nvram conf */
1974         if (n_disabled & WLFEATURE_DISABLE_11N_SGI_TX)
1975                 wlc->sgi_tx = OFF;
1976
1977         if (n_disabled & WLFEATURE_DISABLE_11N_SGI_RX)
1978                 wlc_ht_update_sgi_rx(wlc, 0);
1979
1980         /* apply the stbc override from nvram conf */
1981         if (n_disabled & WLFEATURE_DISABLE_11N_STBC_TX) {
1982                 wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF;
1983                 wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF;
1984                 wlc->ht_cap.cap &= ~HT_CAP_TX_STBC;
1985         }
1986         if (n_disabled & WLFEATURE_DISABLE_11N_STBC_RX)
1987                 wlc_stf_stbc_rx_set(wlc, HT_CAP_RX_STBC_NO);
1988
1989         /* apply the GF override from nvram conf */
1990         if (n_disabled & WLFEATURE_DISABLE_11N_GF)
1991                 wlc->ht_cap.cap &= ~HT_CAP_GF;
1992
1993         /* initialize radio_mpc_disable according to wlc->mpc */
1994         wlc_radio_mpc_upd(wlc);
1995
1996         if (WLANTSEL_ENAB(wlc)) {
1997                 if ((wlc->pub->sih->chip) == BCM43235_CHIP_ID) {
1998                         if ((getintvar(wlc->pub->vars, "aa2g") == 7) ||
1999                             (getintvar(wlc->pub->vars, "aa5g") == 7)) {
2000                                 wlc_bmac_antsel_set(wlc->hw, 1);
2001                         }
2002                 } else {
2003                         wlc_bmac_antsel_set(wlc->hw, wlc->asi->antsel_avail);
2004                 }
2005         }
2006
2007         if (perr)
2008                 *perr = 0;
2009
2010         return (void *)wlc;
2011
2012  fail:
2013         WL_ERROR("wl%d: %s: failed with err %d\n", unit, __func__, err);
2014         if (wlc)
2015                 wlc_detach(wlc);
2016
2017         if (perr)
2018                 *perr = err;
2019         return NULL;
2020 }
2021
2022 static void wlc_attach_antgain_init(struct wlc_info *wlc)
2023 {
2024         uint unit;
2025         unit = wlc->pub->unit;
2026
2027         if ((wlc->band->antgain == -1) && (wlc->pub->sromrev == 1)) {
2028                 /* default antenna gain for srom rev 1 is 2 dBm (8 qdbm) */
2029                 wlc->band->antgain = 8;
2030         } else if (wlc->band->antgain == -1) {
2031                 WL_ERROR("wl%d: %s: Invalid antennas available in srom, using 2dB\n",
2032                          unit, __func__);
2033                 wlc->band->antgain = 8;
2034         } else {
2035                 s8 gain, fract;
2036                 /* Older sroms specified gain in whole dbm only.  In order
2037                  * be able to specify qdbm granularity and remain backward compatible
2038                  * the whole dbms are now encoded in only low 6 bits and remaining qdbms
2039                  * are encoded in the hi 2 bits. 6 bit signed number ranges from
2040                  * -32 - 31. Examples: 0x1 = 1 db,
2041                  * 0xc1 = 1.75 db (1 + 3 quarters),
2042                  * 0x3f = -1 (-1 + 0 quarters),
2043                  * 0x7f = -.75 (-1 in low 6 bits + 1 quarters in hi 2 bits) = -3 qdbm.
2044                  * 0xbf = -.50 (-1 in low 6 bits + 2 quarters in hi 2 bits) = -2 qdbm.
2045                  */
2046                 gain = wlc->band->antgain & 0x3f;
2047                 gain <<= 2;     /* Sign extend */
2048                 gain >>= 2;
2049                 fract = (wlc->band->antgain & 0xc0) >> 6;
2050                 wlc->band->antgain = 4 * gain + fract;
2051         }
2052 }
2053
2054 static bool wlc_attach_stf_ant_init(struct wlc_info *wlc)
2055 {
2056         int aa;
2057         uint unit;
2058         char *vars;
2059         int bandtype;
2060
2061         unit = wlc->pub->unit;
2062         vars = wlc->pub->vars;
2063         bandtype = wlc->band->bandtype;
2064
2065         /* get antennas available */
2066         aa = (s8) getintvar(vars, (BAND_5G(bandtype) ? "aa5g" : "aa2g"));
2067         if (aa == 0)
2068                 aa = (s8) getintvar(vars,
2069                                       (BAND_5G(bandtype) ? "aa1" : "aa0"));
2070         if ((aa < 1) || (aa > 15)) {
2071                 WL_ERROR("wl%d: %s: Invalid antennas available in srom (0x%x), using 3\n",
2072                          unit, __func__, aa);
2073                 aa = 3;
2074         }
2075
2076         /* reset the defaults if we have a single antenna */
2077         if (aa == 1) {
2078                 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_0;
2079                 wlc->stf->txant = ANT_TX_FORCE_0;
2080         } else if (aa == 2) {
2081                 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_1;
2082                 wlc->stf->txant = ANT_TX_FORCE_1;
2083         } else {
2084         }
2085
2086         /* Compute Antenna Gain */
2087         wlc->band->antgain =
2088             (s8) getintvar(vars, (BAND_5G(bandtype) ? "ag1" : "ag0"));
2089         wlc_attach_antgain_init(wlc);
2090
2091         return true;
2092 }
2093
2094
2095 static void wlc_timers_deinit(struct wlc_info *wlc)
2096 {
2097         /* free timer state */
2098         if (wlc->wdtimer) {
2099                 wl_free_timer(wlc->wl, wlc->wdtimer);
2100                 wlc->wdtimer = NULL;
2101         }
2102         if (wlc->radio_timer) {
2103                 wl_free_timer(wlc->wl, wlc->radio_timer);
2104                 wlc->radio_timer = NULL;
2105         }
2106 }
2107
2108 static void wlc_detach_module(struct wlc_info *wlc)
2109 {
2110         if (wlc->asi) {
2111                 wlc_antsel_detach(wlc->asi);
2112                 wlc->asi = NULL;
2113         }
2114
2115         if (wlc->ampdu) {
2116                 wlc_ampdu_detach(wlc->ampdu);
2117                 wlc->ampdu = NULL;
2118         }
2119
2120         wlc_stf_detach(wlc);
2121 }
2122
2123 /*
2124  * Return a count of the number of driver callbacks still pending.
2125  *
2126  * General policy is that wlc_detach can only dealloc/free software states. It can NOT
2127  *  touch hardware registers since the d11core may be in reset and clock may not be available.
2128  *    One exception is sb register access, which is possible if crystal is turned on
2129  * After "down" state, driver should avoid software timer with the exception of radio_monitor.
2130  */
2131 uint wlc_detach(struct wlc_info *wlc)
2132 {
2133         uint i;
2134         uint callbacks = 0;
2135
2136         if (wlc == NULL)
2137                 return 0;
2138
2139         WL_TRACE("wl%d: %s\n", wlc->pub->unit, __func__);
2140
2141         ASSERT(!wlc->pub->up);
2142
2143         callbacks += wlc_bmac_detach(wlc);
2144
2145         /* delete software timers */
2146         if (!wlc_radio_monitor_stop(wlc))
2147                 callbacks++;
2148
2149         if (wlc->eventq) {
2150                 wlc_eventq_detach(wlc->eventq);
2151                 wlc->eventq = NULL;
2152         }
2153
2154         wlc_channel_mgr_detach(wlc->cmi);
2155
2156         wlc_timers_deinit(wlc);
2157
2158         wlc_detach_module(wlc);
2159
2160         /* free other state */
2161
2162
2163 #ifdef BCMDBG
2164         if (wlc->country_ie_override) {
2165                 kfree(wlc->country_ie_override);
2166                 wlc->country_ie_override = NULL;
2167         }
2168 #endif                          /* BCMDBG */
2169
2170         {
2171                 /* free dumpcb list */
2172                 dumpcb_t *prev, *ptr;
2173                 prev = ptr = wlc->dumpcb_head;
2174                 while (ptr) {
2175                         ptr = prev->next;
2176                         kfree(prev);
2177                         prev = ptr;
2178                 }
2179                 wlc->dumpcb_head = NULL;
2180         }
2181
2182         /* Detach from iovar manager */
2183         wlc_module_unregister(wlc->pub, "wlc_iovars", wlc);
2184
2185         while (wlc->tx_queues != NULL) {
2186                 wlc_txq_free(wlc, wlc->osh, wlc->tx_queues);
2187         }
2188
2189         /*
2190          * consistency check: wlc_module_register/wlc_module_unregister calls
2191          * should match therefore nothing should be left here.
2192          */
2193         for (i = 0; i < WLC_MAXMODULES; i++)
2194                 ASSERT(wlc->modulecb[i].name[0] == '\0');
2195
2196         wlc_detach_mfree(wlc, wlc->osh);
2197         return callbacks;
2198 }
2199
2200 /* update state that depends on the current value of "ap" */
2201 void wlc_ap_upd(struct wlc_info *wlc)
2202 {
2203         if (AP_ENAB(wlc->pub))
2204                 wlc->PLCPHdr_override = WLC_PLCP_AUTO;  /* AP: short not allowed, but not enforced */
2205         else
2206                 wlc->PLCPHdr_override = WLC_PLCP_SHORT; /* STA-BSS; short capable */
2207
2208         /* disable vlan_mode on AP since some legacy STAs cannot rx tagged pkts */
2209         wlc->vlan_mode = AP_ENAB(wlc->pub) ? OFF : AUTO;
2210
2211         /* fixup mpc */
2212         wlc->mpc = true;
2213 }
2214
2215 /* read hwdisable state and propagate to wlc flag */
2216 static void wlc_radio_hwdisable_upd(struct wlc_info *wlc)
2217 {
2218         if (wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO || wlc->pub->hw_off)
2219                 return;
2220
2221         if (wlc_bmac_radio_read_hwdisabled(wlc->hw)) {
2222                 mboolset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
2223         } else {
2224                 mboolclr(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
2225         }
2226 }
2227
2228 /* return true if Minimum Power Consumption should be entered, false otherwise */
2229 bool wlc_is_non_delay_mpc(struct wlc_info *wlc)
2230 {
2231         return false;
2232 }
2233
2234 bool wlc_ismpc(struct wlc_info *wlc)
2235 {
2236         return (wlc->mpc_delay_off == 0) && (wlc_is_non_delay_mpc(wlc));
2237 }
2238
2239 void wlc_radio_mpc_upd(struct wlc_info *wlc)
2240 {
2241         bool mpc_radio, radio_state;
2242
2243         /*
2244          * Clear the WL_RADIO_MPC_DISABLE bit when mpc feature is disabled
2245          * in case the WL_RADIO_MPC_DISABLE bit was set. Stop the radio
2246          * monitor also when WL_RADIO_MPC_DISABLE is the only reason that
2247          * the radio is going down.
2248          */
2249         if (!wlc->mpc) {
2250                 if (!wlc->pub->radio_disabled)
2251                         return;
2252                 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
2253                 wlc_radio_upd(wlc);
2254                 if (!wlc->pub->radio_disabled)
2255                         wlc_radio_monitor_stop(wlc);
2256                 return;
2257         }
2258
2259         /*
2260          * sync ismpc logic with WL_RADIO_MPC_DISABLE bit in wlc->pub->radio_disabled
2261          * to go ON, always call radio_upd synchronously
2262          * to go OFF, postpone radio_upd to later when context is safe(e.g. watchdog)
2263          */
2264         radio_state =
2265             (mboolisset(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE) ? OFF :
2266              ON);
2267         mpc_radio = (wlc_ismpc(wlc) == true) ? OFF : ON;
2268
2269         if (radio_state == ON && mpc_radio == OFF)
2270                 wlc->mpc_delay_off = wlc->mpc_dlycnt;
2271         else if (radio_state == OFF && mpc_radio == ON) {
2272                 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
2273                 wlc_radio_upd(wlc);
2274                 if (wlc->mpc_offcnt < WLC_MPC_THRESHOLD) {
2275                         wlc->mpc_dlycnt = WLC_MPC_MAX_DELAYCNT;
2276                 } else
2277                         wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
2278                 wlc->mpc_dur += OSL_SYSUPTIME() - wlc->mpc_laston_ts;
2279         }
2280         /* Below logic is meant to capture the transition from mpc off to mpc on for reasons
2281          * other than wlc->mpc_delay_off keeping the mpc off. In that case reset
2282          * wlc->mpc_delay_off to wlc->mpc_dlycnt, so that we restart the countdown of mpc_delay_off
2283          */
2284         if ((wlc->prev_non_delay_mpc == false) &&
2285             (wlc_is_non_delay_mpc(wlc) == true) && wlc->mpc_delay_off) {
2286                 wlc->mpc_delay_off = wlc->mpc_dlycnt;
2287         }
2288         wlc->prev_non_delay_mpc = wlc_is_non_delay_mpc(wlc);
2289 }
2290
2291 /*
2292  * centralized radio disable/enable function,
2293  * invoke radio enable/disable after updating hwradio status
2294  */
2295 static void wlc_radio_upd(struct wlc_info *wlc)
2296 {
2297         if (wlc->pub->radio_disabled)
2298                 wlc_radio_disable(wlc);
2299         else
2300                 wlc_radio_enable(wlc);
2301 }
2302
2303 /* maintain LED behavior in down state */
2304 static void wlc_down_led_upd(struct wlc_info *wlc)
2305 {
2306         ASSERT(!wlc->pub->up);
2307
2308         /* maintain LEDs while in down state, turn on sbclk if not available yet */
2309         /* turn on sbclk if necessary */
2310         if (!AP_ENAB(wlc->pub)) {
2311                 wlc_pllreq(wlc, true, WLC_PLLREQ_FLIP);
2312
2313                 wlc_pllreq(wlc, false, WLC_PLLREQ_FLIP);
2314         }
2315 }
2316
2317 void wlc_radio_disable(struct wlc_info *wlc)
2318 {
2319         if (!wlc->pub->up) {
2320                 wlc_down_led_upd(wlc);
2321                 return;
2322         }
2323
2324         wlc_radio_monitor_start(wlc);
2325         wl_down(wlc->wl);
2326 }
2327
2328 static void wlc_radio_enable(struct wlc_info *wlc)
2329 {
2330         if (wlc->pub->up)
2331                 return;
2332
2333         if (DEVICEREMOVED(wlc))
2334                 return;
2335
2336         if (!wlc->down_override) {      /* imposed by wl down/out ioctl */
2337                 wl_up(wlc->wl);
2338         }
2339 }
2340
2341 /* periodical query hw radio button while driver is "down" */
2342 static void wlc_radio_timer(void *arg)
2343 {
2344         struct wlc_info *wlc = (struct wlc_info *) arg;
2345
2346         if (DEVICEREMOVED(wlc)) {
2347                 WL_ERROR("wl%d: %s: dead chip\n", wlc->pub->unit, __func__);
2348                 wl_down(wlc->wl);
2349                 return;
2350         }
2351
2352         /* cap mpc off count */
2353         if (wlc->mpc_offcnt < WLC_MPC_MAX_DELAYCNT)
2354                 wlc->mpc_offcnt++;
2355
2356         /* validate all the reasons driver could be down and running this radio_timer */
2357         ASSERT(wlc->pub->radio_disabled || wlc->down_override);
2358         wlc_radio_hwdisable_upd(wlc);
2359         wlc_radio_upd(wlc);
2360 }
2361
2362 static bool wlc_radio_monitor_start(struct wlc_info *wlc)
2363 {
2364         /* Don't start the timer if HWRADIO feature is disabled */
2365         if (wlc->radio_monitor || (wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO))
2366                 return true;
2367
2368         wlc->radio_monitor = true;
2369         wlc_pllreq(wlc, true, WLC_PLLREQ_RADIO_MON);
2370         wl_add_timer(wlc->wl, wlc->radio_timer, TIMER_INTERVAL_RADIOCHK, true);
2371         return true;
2372 }
2373
2374 bool wlc_radio_monitor_stop(struct wlc_info *wlc)
2375 {
2376         if (!wlc->radio_monitor)
2377                 return true;
2378
2379         ASSERT((wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO) !=
2380                WL_SWFL_NOHWRADIO);
2381
2382         wlc->radio_monitor = false;
2383         wlc_pllreq(wlc, false, WLC_PLLREQ_RADIO_MON);
2384         return wl_del_timer(wlc->wl, wlc->radio_timer);
2385 }
2386
2387 /* bring the driver down, but don't reset hardware */
2388 void wlc_out(struct wlc_info *wlc)
2389 {
2390         wlc_bmac_set_noreset(wlc->hw, true);
2391         wlc_radio_upd(wlc);
2392         wl_down(wlc->wl);
2393         wlc_bmac_set_noreset(wlc->hw, false);
2394
2395         /* core clk is true in BMAC driver due to noreset, need to mirror it in HIGH */
2396         wlc->clk = true;
2397
2398         /* This will make sure that when 'up' is done
2399          * after 'out' it'll restore hardware (especially gpios)
2400          */
2401         wlc->pub->hw_up = false;
2402 }
2403
2404 #if defined(BCMDBG)
2405 /* Verify the sanity of wlc->tx_prec_map. This can be done only by making sure that
2406  * if there is no packet pending for the FIFO, then the corresponding prec bits should be set
2407  * in prec_map. Of course, ignore this rule when block_datafifo is set
2408  */
2409 static bool wlc_tx_prec_map_verify(struct wlc_info *wlc)
2410 {
2411         /* For non-WME, both fifos have overlapping prec_map. So it's an error only if both
2412          * fail the check.
2413          */
2414         if (!EDCF_ENAB(wlc->pub)) {
2415                 if (!(WLC_TX_FIFO_CHECK(wlc, TX_DATA_FIFO) ||
2416                       WLC_TX_FIFO_CHECK(wlc, TX_CTL_FIFO)))
2417                         return false;
2418                 else
2419                         return true;
2420         }
2421
2422         return WLC_TX_FIFO_CHECK(wlc, TX_AC_BK_FIFO)
2423                 && WLC_TX_FIFO_CHECK(wlc, TX_AC_BE_FIFO)
2424                 && WLC_TX_FIFO_CHECK(wlc, TX_AC_VI_FIFO)
2425                 && WLC_TX_FIFO_CHECK(wlc, TX_AC_VO_FIFO);
2426 }
2427 #endif                          /* BCMDBG */
2428
2429 static void wlc_watchdog_by_timer(void *arg)
2430 {
2431         struct wlc_info *wlc = (struct wlc_info *) arg;
2432         wlc_watchdog(arg);
2433         if (WLC_WATCHDOG_TBTT(wlc)) {
2434                 /* set to normal osl watchdog period */
2435                 wl_del_timer(wlc->wl, wlc->wdtimer);
2436                 wl_add_timer(wlc->wl, wlc->wdtimer, TIMER_INTERVAL_WATCHDOG,
2437                              true);
2438         }
2439 }
2440
2441 /* common watchdog code */
2442 static void wlc_watchdog(void *arg)
2443 {
2444         struct wlc_info *wlc = (struct wlc_info *) arg;
2445         int i;
2446         wlc_bsscfg_t *cfg;
2447
2448         WL_TRACE("wl%d: wlc_watchdog\n", wlc->pub->unit);
2449
2450         if (!wlc->pub->up)
2451                 return;
2452
2453         if (DEVICEREMOVED(wlc)) {
2454                 WL_ERROR("wl%d: %s: dead chip\n", wlc->pub->unit, __func__);
2455                 wl_down(wlc->wl);
2456                 return;
2457         }
2458
2459         /* increment second count */
2460         wlc->pub->now++;
2461
2462         /* delay radio disable */
2463         if (wlc->mpc_delay_off) {
2464                 if (--wlc->mpc_delay_off == 0) {
2465                         mboolset(wlc->pub->radio_disabled,
2466                                  WL_RADIO_MPC_DISABLE);
2467                         if (wlc->mpc && wlc_ismpc(wlc))
2468                                 wlc->mpc_offcnt = 0;
2469                         wlc->mpc_laston_ts = OSL_SYSUPTIME();
2470                 }
2471         }
2472
2473         /* mpc sync */
2474         wlc_radio_mpc_upd(wlc);
2475         /* radio sync: sw/hw/mpc --> radio_disable/radio_enable */
2476         wlc_radio_hwdisable_upd(wlc);
2477         wlc_radio_upd(wlc);
2478         /* if ismpc, driver should be in down state if up/down is allowed */
2479         if (wlc->mpc && wlc_ismpc(wlc))
2480                 ASSERT(!wlc->pub->up);
2481         /* if radio is disable, driver may be down, quit here */
2482         if (wlc->pub->radio_disabled)
2483                 return;
2484
2485         wlc_bmac_watchdog(wlc);
2486
2487         /* occasionally sample mac stat counters to detect 16-bit counter wrap */
2488         if ((WLC_UPDATE_STATS(wlc))
2489             && (!(wlc->pub->now % SW_TIMER_MAC_STAT_UPD)))
2490                 wlc_statsupd(wlc);
2491
2492         /* Manage TKIP countermeasures timers */
2493         FOREACH_BSS(wlc, i, cfg) {
2494                 if (cfg->tk_cm_dt) {
2495                         cfg->tk_cm_dt--;
2496                 }
2497                 if (cfg->tk_cm_bt) {
2498                         cfg->tk_cm_bt--;
2499                 }
2500         }
2501
2502         /* Call any registered watchdog handlers */
2503         for (i = 0; i < WLC_MAXMODULES; i++) {
2504                 if (wlc->modulecb[i].watchdog_fn)
2505                         wlc->modulecb[i].watchdog_fn(wlc->modulecb[i].hdl);
2506         }
2507
2508         if (WLCISNPHY(wlc->band) && !wlc->pub->tempsense_disable &&
2509             ((wlc->pub->now - wlc->tempsense_lasttime) >=
2510              WLC_TEMPSENSE_PERIOD)) {
2511                 wlc->tempsense_lasttime = wlc->pub->now;
2512                 wlc_tempsense_upd(wlc);
2513         }
2514         /* BMAC_NOTE: for HIGH_ONLY driver, this seems being called after RPC bus failed */
2515         ASSERT(wlc_bmac_taclear(wlc->hw, true));
2516
2517         /* Verify that tx_prec_map and fifos are in sync to avoid lock ups */
2518         ASSERT(wlc_tx_prec_map_verify(wlc));
2519
2520         ASSERT(wlc_ps_check(wlc));
2521 }
2522
2523 /* make interface operational */
2524 int wlc_up(struct wlc_info *wlc)
2525 {
2526         WL_TRACE("wl%d: %s:\n", wlc->pub->unit, __func__);
2527
2528         /* HW is turned off so don't try to access it */
2529         if (wlc->pub->hw_off || DEVICEREMOVED(wlc))
2530                 return BCME_RADIOOFF;
2531
2532         if (!wlc->pub->hw_up) {
2533                 wlc_bmac_hw_up(wlc->hw);
2534                 wlc->pub->hw_up = true;
2535         }
2536
2537         if ((wlc->pub->boardflags & BFL_FEM)
2538             && (wlc->pub->sih->chip == BCM4313_CHIP_ID)) {
2539                 if (wlc->pub->boardrev >= 0x1250
2540                     && (wlc->pub->boardflags & BFL_FEM_BT)) {
2541                         wlc_mhf(wlc, MHF5, MHF5_4313_GPIOCTRL,
2542                                 MHF5_4313_GPIOCTRL, WLC_BAND_ALL);
2543                 } else {
2544                         wlc_mhf(wlc, MHF4, MHF4_EXTPA_ENABLE, MHF4_EXTPA_ENABLE,
2545                                 WLC_BAND_ALL);
2546                 }
2547         }
2548
2549         /*
2550          * Need to read the hwradio status here to cover the case where the system
2551          * is loaded with the hw radio disabled. We do not want to bring the driver up in this case.
2552          * if radio is disabled, abort up, lower power, start radio timer and return 0(for NDIS)
2553          * don't call radio_update to avoid looping wlc_up.
2554          *
2555          * wlc_bmac_up_prep() returns either 0 or BCME_RADIOOFF only
2556          */
2557         if (!wlc->pub->radio_disabled) {
2558                 int status = wlc_bmac_up_prep(wlc->hw);
2559                 if (status == BCME_RADIOOFF) {
2560                         if (!mboolisset
2561                             (wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE)) {
2562                                 int idx;
2563                                 wlc_bsscfg_t *bsscfg;
2564                                 mboolset(wlc->pub->radio_disabled,
2565                                          WL_RADIO_HW_DISABLE);
2566
2567                                 FOREACH_BSS(wlc, idx, bsscfg) {
2568                                         if (!BSSCFG_STA(bsscfg)
2569                                             || !bsscfg->enable || !bsscfg->BSS)
2570                                                 continue;
2571                                         WL_ERROR("wl%d.%d: wlc_up: rfdisable -> " "wlc_bsscfg_disable()\n",
2572                                                  wlc->pub->unit, idx);
2573                                 }
2574                         }
2575                 } else
2576                         ASSERT(!status);
2577         }
2578
2579         if (wlc->pub->radio_disabled) {
2580                 wlc_radio_monitor_start(wlc);
2581                 return 0;
2582         }
2583
2584         /* wlc_bmac_up_prep has done wlc_corereset(). so clk is on, set it */
2585         wlc->clk = true;
2586
2587         wlc_radio_monitor_stop(wlc);
2588
2589         /* Set EDCF hostflags */
2590         if (EDCF_ENAB(wlc->pub)) {
2591                 wlc_mhf(wlc, MHF1, MHF1_EDCF, MHF1_EDCF, WLC_BAND_ALL);
2592         } else {
2593                 wlc_mhf(wlc, MHF1, MHF1_EDCF, 0, WLC_BAND_ALL);
2594         }
2595
2596         if (WLC_WAR16165(wlc))
2597                 wlc_mhf(wlc, MHF2, MHF2_PCISLOWCLKWAR, MHF2_PCISLOWCLKWAR,
2598                         WLC_BAND_ALL);
2599
2600         wl_init(wlc->wl);
2601         wlc->pub->up = true;
2602
2603         if (wlc->bandinit_pending) {
2604                 wlc_suspend_mac_and_wait(wlc);
2605                 wlc_set_chanspec(wlc, wlc->default_bss->chanspec);
2606                 wlc->bandinit_pending = false;
2607                 wlc_enable_mac(wlc);
2608         }
2609
2610         wlc_bmac_up_finish(wlc->hw);
2611
2612         /* other software states up after ISR is running */
2613         /* start APs that were to be brought up but are not up  yet */
2614         /* if (AP_ENAB(wlc->pub)) wlc_restart_ap(wlc->ap); */
2615
2616         /* Program the TX wme params with the current settings */
2617         wlc_wme_retries_write(wlc);
2618
2619         /* start one second watchdog timer */
2620         ASSERT(!wlc->WDarmed);
2621         wl_add_timer(wlc->wl, wlc->wdtimer, TIMER_INTERVAL_WATCHDOG, true);
2622         wlc->WDarmed = true;
2623
2624         /* ensure antenna config is up to date */
2625         wlc_stf_phy_txant_upd(wlc);
2626         /* ensure LDPC config is in sync */
2627         wlc_ht_update_ldpc(wlc, wlc->stf->ldpc);
2628
2629         return 0;
2630 }
2631
2632 /* Initialize the base precedence map for dequeueing from txq based on WME settings */
2633 static void wlc_tx_prec_map_init(struct wlc_info *wlc)
2634 {
2635         wlc->tx_prec_map = WLC_PREC_BMP_ALL;
2636         memset(wlc->fifo2prec_map, 0, NFIFO * sizeof(u16));
2637
2638         /* For non-WME, both fifos have overlapping MAXPRIO. So just disable all precedences
2639          * if either is full.
2640          */
2641         if (!EDCF_ENAB(wlc->pub)) {
2642                 wlc->fifo2prec_map[TX_DATA_FIFO] = WLC_PREC_BMP_ALL;
2643                 wlc->fifo2prec_map[TX_CTL_FIFO] = WLC_PREC_BMP_ALL;
2644         } else {
2645                 wlc->fifo2prec_map[TX_AC_BK_FIFO] = WLC_PREC_BMP_AC_BK;
2646                 wlc->fifo2prec_map[TX_AC_BE_FIFO] = WLC_PREC_BMP_AC_BE;
2647                 wlc->fifo2prec_map[TX_AC_VI_FIFO] = WLC_PREC_BMP_AC_VI;
2648                 wlc->fifo2prec_map[TX_AC_VO_FIFO] = WLC_PREC_BMP_AC_VO;
2649         }
2650 }
2651
2652 static uint wlc_down_del_timer(struct wlc_info *wlc)
2653 {
2654         uint callbacks = 0;
2655
2656         return callbacks;
2657 }
2658
2659 /*
2660  * Mark the interface nonoperational, stop the software mechanisms,
2661  * disable the hardware, free any transient buffer state.
2662  * Return a count of the number of driver callbacks still pending.
2663  */
2664 uint wlc_down(struct wlc_info *wlc)
2665 {
2666
2667         uint callbacks = 0;
2668         int i;
2669         bool dev_gone = false;
2670         wlc_txq_info_t *qi;
2671
2672         WL_TRACE("wl%d: %s:\n", wlc->pub->unit, __func__);
2673
2674         /* check if we are already in the going down path */
2675         if (wlc->going_down) {
2676                 WL_ERROR("wl%d: %s: Driver going down so return\n",
2677                          wlc->pub->unit, __func__);
2678                 return 0;
2679         }
2680         if (!wlc->pub->up)
2681                 return callbacks;
2682
2683         /* in between, mpc could try to bring down again.. */
2684         wlc->going_down = true;
2685
2686         callbacks += wlc_bmac_down_prep(wlc->hw);
2687
2688         dev_gone = DEVICEREMOVED(wlc);
2689
2690         /* Call any registered down handlers */
2691         for (i = 0; i < WLC_MAXMODULES; i++) {
2692                 if (wlc->modulecb[i].down_fn)
2693                         callbacks +=
2694                             wlc->modulecb[i].down_fn(wlc->modulecb[i].hdl);
2695         }
2696
2697         /* cancel the watchdog timer */
2698         if (wlc->WDarmed) {
2699                 if (!wl_del_timer(wlc->wl, wlc->wdtimer))
2700                         callbacks++;
2701                 wlc->WDarmed = false;
2702         }
2703         /* cancel all other timers */
2704         callbacks += wlc_down_del_timer(wlc);
2705
2706         /* interrupt must have been blocked */
2707         ASSERT((wlc->macintmask == 0) || !wlc->pub->up);
2708
2709         wlc->pub->up = false;
2710
2711         wlc_phy_mute_upd(wlc->band->pi, false, PHY_MUTE_ALL);
2712
2713         /* clear txq flow control */
2714         wlc_txflowcontrol_reset(wlc);
2715
2716         /* flush tx queues */
2717         for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
2718                 pktq_flush(wlc->osh, &qi->q, true, NULL, 0);
2719                 ASSERT(pktq_empty(&qi->q));
2720         }
2721
2722         /* flush event queue.
2723          * Should be the last thing done after all the events are generated
2724          * Just delivers the events synchronously instead of waiting for a timer
2725          */
2726         callbacks += wlc_eventq_down(wlc->eventq);
2727
2728         callbacks += wlc_bmac_down_finish(wlc->hw);
2729
2730         /* wlc_bmac_down_finish has done wlc_coredisable(). so clk is off */
2731         wlc->clk = false;
2732
2733
2734         /* Verify all packets are flushed from the driver */
2735         if (wlc->osh->pktalloced != 0) {
2736                 WL_ERROR("%d packets not freed at wlc_down!!!!!!\n",
2737                          wlc->osh->pktalloced);
2738         }
2739 #ifdef BCMDBG
2740         /* Since all the packets should have been freed,
2741          * all callbacks should have been called
2742          */
2743         for (i = 1; i <= wlc->pub->tunables->maxpktcb; i++)
2744                 ASSERT(wlc->pkt_callback[i].fn == NULL);
2745 #endif
2746         wlc->going_down = false;
2747         return callbacks;
2748 }
2749
2750 /* Set the current gmode configuration */
2751 int wlc_set_gmode(struct wlc_info *wlc, u8 gmode, bool config)
2752 {
2753         int ret = 0;
2754         uint i;
2755         wlc_rateset_t rs;
2756         /* Default to 54g Auto */
2757         s8 shortslot = WLC_SHORTSLOT_AUTO;      /* Advertise and use shortslot (-1/0/1 Auto/Off/On) */
2758         bool shortslot_restrict = false;        /* Restrict association to stations that support shortslot
2759                                                  */
2760         bool ignore_bcns = true;        /* Ignore legacy beacons on the same channel */
2761         bool ofdm_basic = false;        /* Make 6, 12, and 24 basic rates */
2762         int preamble = WLC_PLCP_LONG;   /* Advertise and use short preambles (-1/0/1 Auto/Off/On) */
2763         bool preamble_restrict = false; /* Restrict association to stations that support short
2764                                          * preambles
2765                                          */
2766         struct wlcband *band;
2767
2768         /* if N-support is enabled, allow Gmode set as long as requested
2769          * Gmode is not GMODE_LEGACY_B
2770          */
2771         if (N_ENAB(wlc->pub) && gmode == GMODE_LEGACY_B)
2772                 return BCME_UNSUPPORTED;
2773
2774         /* verify that we are dealing with 2G band and grab the band pointer */
2775         if (wlc->band->bandtype == WLC_BAND_2G)
2776                 band = wlc->band;
2777         else if ((NBANDS(wlc) > 1) &&
2778                  (wlc->bandstate[OTHERBANDUNIT(wlc)]->bandtype == WLC_BAND_2G))
2779                 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
2780         else
2781                 return BCME_BADBAND;
2782
2783         /* Legacy or bust when no OFDM is supported by regulatory */
2784         if ((wlc_channel_locale_flags_in_band(wlc->cmi, band->bandunit) &
2785              WLC_NO_OFDM) && (gmode != GMODE_LEGACY_B))
2786                 return BCME_RANGE;
2787
2788         /* update configuration value */
2789         if (config == true)
2790                 wlc_protection_upd(wlc, WLC_PROT_G_USER, gmode);
2791
2792         /* Clear supported rates filter */
2793         memset(&wlc->sup_rates_override, 0, sizeof(wlc_rateset_t));
2794
2795         /* Clear rateset override */
2796         memset(&rs, 0, sizeof(wlc_rateset_t));
2797
2798         switch (gmode) {
2799         case GMODE_LEGACY_B:
2800                 shortslot = WLC_SHORTSLOT_OFF;
2801                 wlc_rateset_copy(&gphy_legacy_rates, &rs);
2802
2803                 break;
2804
2805         case GMODE_LRS:
2806                 if (AP_ENAB(wlc->pub))
2807                         wlc_rateset_copy(&cck_rates, &wlc->sup_rates_override);
2808                 break;
2809
2810         case GMODE_AUTO:
2811                 /* Accept defaults */
2812                 break;
2813
2814         case GMODE_ONLY:
2815                 ofdm_basic = true;
2816                 preamble = WLC_PLCP_SHORT;
2817                 preamble_restrict = true;
2818                 break;
2819
2820         case GMODE_PERFORMANCE:
2821                 if (AP_ENAB(wlc->pub))  /* Put all rates into the Supported Rates element */
2822                         wlc_rateset_copy(&cck_ofdm_rates,
2823                                          &wlc->sup_rates_override);
2824
2825                 shortslot = WLC_SHORTSLOT_ON;
2826                 shortslot_restrict = true;
2827                 ofdm_basic = true;
2828                 preamble = WLC_PLCP_SHORT;
2829                 preamble_restrict = true;
2830                 break;
2831
2832         default:
2833                 /* Error */
2834                 WL_ERROR("wl%d: %s: invalid gmode %d\n",
2835                          wlc->pub->unit, __func__, gmode);
2836                 return BCME_UNSUPPORTED;
2837         }
2838
2839         /*
2840          * If we are switching to gmode == GMODE_LEGACY_B,
2841          * clean up rate info that may refer to OFDM rates.
2842          */
2843         if ((gmode == GMODE_LEGACY_B) && (band->gmode != GMODE_LEGACY_B)) {
2844                 band->gmode = gmode;
2845                 if (band->rspec_override && !IS_CCK(band->rspec_override)) {
2846                         band->rspec_override = 0;
2847                         wlc_reprate_init(wlc);
2848                 }
2849                 if (band->mrspec_override && !IS_CCK(band->mrspec_override)) {
2850                         band->mrspec_override = 0;
2851                 }
2852         }
2853
2854         band->gmode = gmode;
2855
2856         wlc->ignore_bcns = ignore_bcns;
2857
2858         wlc->shortslot_override = shortslot;
2859
2860         if (AP_ENAB(wlc->pub)) {
2861                 /* wlc->ap->shortslot_restrict = shortslot_restrict; */
2862                 wlc->PLCPHdr_override =
2863                     (preamble !=
2864                      WLC_PLCP_LONG) ? WLC_PLCP_SHORT : WLC_PLCP_AUTO;
2865         }
2866
2867         if ((AP_ENAB(wlc->pub) && preamble != WLC_PLCP_LONG)
2868             || preamble == WLC_PLCP_SHORT)
2869                 wlc->default_bss->capability |= DOT11_CAP_SHORT;
2870         else
2871                 wlc->default_bss->capability &= ~DOT11_CAP_SHORT;
2872
2873         /* Update shortslot capability bit for AP and IBSS */
2874         if ((AP_ENAB(wlc->pub) && shortslot == WLC_SHORTSLOT_AUTO) ||
2875             shortslot == WLC_SHORTSLOT_ON)
2876                 wlc->default_bss->capability |= DOT11_CAP_SHORTSLOT;
2877         else
2878                 wlc->default_bss->capability &= ~DOT11_CAP_SHORTSLOT;
2879
2880         /* Use the default 11g rateset */
2881         if (!rs.count)
2882                 wlc_rateset_copy(&cck_ofdm_rates, &rs);
2883
2884         if (ofdm_basic) {
2885                 for (i = 0; i < rs.count; i++) {
2886                         if (rs.rates[i] == WLC_RATE_6M
2887                             || rs.rates[i] == WLC_RATE_12M
2888                             || rs.rates[i] == WLC_RATE_24M)
2889                                 rs.rates[i] |= WLC_RATE_FLAG;
2890                 }
2891         }
2892
2893         /* Set default bss rateset */
2894         wlc->default_bss->rateset.count = rs.count;
2895         bcopy((char *)rs.rates, (char *)wlc->default_bss->rateset.rates,
2896               sizeof(wlc->default_bss->rateset.rates));
2897
2898         return ret;
2899 }
2900
2901 static int wlc_nmode_validate(struct wlc_info *wlc, s32 nmode)
2902 {
2903         int err = 0;
2904
2905         switch (nmode) {
2906
2907         case OFF:
2908                 break;
2909
2910         case AUTO:
2911         case WL_11N_2x2:
2912         case WL_11N_3x3:
2913                 if (!(WLC_PHY_11N_CAP(wlc->band)))
2914                         err = BCME_BADBAND;
2915                 break;
2916
2917         default:
2918                 err = BCME_RANGE;
2919                 break;
2920         }
2921
2922         return err;
2923 }
2924
2925 int wlc_set_nmode(struct wlc_info *wlc, s32 nmode)
2926 {
2927         uint i;
2928         int err;
2929
2930         err = wlc_nmode_validate(wlc, nmode);
2931         ASSERT(err == 0);
2932         if (err)
2933                 return err;
2934
2935         switch (nmode) {
2936         case OFF:
2937                 wlc->pub->_n_enab = OFF;
2938                 wlc->default_bss->flags &= ~WLC_BSS_HT;
2939                 /* delete the mcs rates from the default and hw ratesets */
2940                 wlc_rateset_mcs_clear(&wlc->default_bss->rateset);
2941                 for (i = 0; i < NBANDS(wlc); i++) {
2942                         memset(wlc->bandstate[i]->hw_rateset.mcs, 0,
2943                                MCSSET_LEN);
2944                         if (IS_MCS(wlc->band->rspec_override)) {
2945                                 wlc->bandstate[i]->rspec_override = 0;
2946                                 wlc_reprate_init(wlc);
2947                         }
2948                         if (IS_MCS(wlc->band->mrspec_override))
2949                                 wlc->bandstate[i]->mrspec_override = 0;
2950                 }
2951                 break;
2952
2953         case AUTO:
2954                 if (wlc->stf->txstreams == WL_11N_3x3)
2955                         nmode = WL_11N_3x3;
2956                 else
2957                         nmode = WL_11N_2x2;
2958         case WL_11N_2x2:
2959         case WL_11N_3x3:
2960                 ASSERT(WLC_PHY_11N_CAP(wlc->band));
2961                 /* force GMODE_AUTO if NMODE is ON */
2962                 wlc_set_gmode(wlc, GMODE_AUTO, true);
2963                 if (nmode == WL_11N_3x3)
2964                         wlc->pub->_n_enab = SUPPORT_HT;
2965                 else
2966                         wlc->pub->_n_enab = SUPPORT_11N;
2967                 wlc->default_bss->flags |= WLC_BSS_HT;
2968                 /* add the mcs rates to the default and hw ratesets */
2969                 wlc_rateset_mcs_build(&wlc->default_bss->rateset,
2970                                       wlc->stf->txstreams);
2971                 for (i = 0; i < NBANDS(wlc); i++)
2972                         memcpy(wlc->bandstate[i]->hw_rateset.mcs,
2973                                wlc->default_bss->rateset.mcs, MCSSET_LEN);
2974                 break;
2975
2976         default:
2977                 ASSERT(0);
2978                 break;
2979         }
2980
2981         return err;
2982 }
2983
2984 static int wlc_set_rateset(struct wlc_info *wlc, wlc_rateset_t *rs_arg)
2985 {
2986         wlc_rateset_t rs, new;
2987         uint bandunit;
2988
2989         bcopy((char *)rs_arg, (char *)&rs, sizeof(wlc_rateset_t));
2990
2991         /* check for bad count value */
2992         if ((rs.count == 0) || (rs.count > WLC_NUMRATES))
2993                 return BCME_BADRATESET;
2994
2995         /* try the current band */
2996         bandunit = wlc->band->bandunit;
2997         bcopy((char *)&rs, (char *)&new, sizeof(wlc_rateset_t));
2998         if (wlc_rate_hwrs_filter_sort_validate
2999             (&new, &wlc->bandstate[bandunit]->hw_rateset, true,
3000              wlc->stf->txstreams))
3001                 goto good;
3002
3003         /* try the other band */
3004         if (IS_MBAND_UNLOCKED(wlc)) {
3005                 bandunit = OTHERBANDUNIT(wlc);
3006                 bcopy((char *)&rs, (char *)&new, sizeof(wlc_rateset_t));
3007                 if (wlc_rate_hwrs_filter_sort_validate(&new,
3008                                                        &wlc->
3009                                                        bandstate[bandunit]->
3010                                                        hw_rateset, true,
3011                                                        wlc->stf->txstreams))
3012                         goto good;
3013         }
3014
3015         return BCME_ERROR;
3016
3017  good:
3018         /* apply new rateset */
3019         bcopy((char *)&new, (char *)&wlc->default_bss->rateset,
3020               sizeof(wlc_rateset_t));
3021         bcopy((char *)&new, (char *)&wlc->bandstate[bandunit]->defrateset,
3022               sizeof(wlc_rateset_t));
3023         return 0;
3024 }
3025
3026 /* simplified integer set interface for common ioctl handler */
3027 int wlc_set(struct wlc_info *wlc, int cmd, int arg)
3028 {
3029         return wlc_ioctl(wlc, cmd, (void *)&arg, sizeof(arg), NULL);
3030 }
3031
3032 /* simplified integer get interface for common ioctl handler */
3033 int wlc_get(struct wlc_info *wlc, int cmd, int *arg)
3034 {
3035         return wlc_ioctl(wlc, cmd, arg, sizeof(int), NULL);
3036 }
3037
3038 static void wlc_ofdm_rateset_war(struct wlc_info *wlc)
3039 {
3040         u8 r;
3041         bool war = false;
3042
3043         if (wlc->cfg->associated)
3044                 r = wlc->cfg->current_bss->rateset.rates[0];
3045         else
3046                 r = wlc->default_bss->rateset.rates[0];
3047
3048         wlc_phy_ofdm_rateset_war(wlc->band->pi, war);
3049
3050         return;
3051 }
3052
3053 int
3054 wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
3055           struct wlc_if *wlcif)
3056 {
3057         return _wlc_ioctl(wlc, cmd, arg, len, wlcif);
3058 }
3059
3060 /* common ioctl handler. return: 0=ok, -1=error, positive=particular error */
3061 static int
3062 _wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
3063            struct wlc_if *wlcif)
3064 {
3065         int val, *pval;
3066         bool bool_val;
3067         int bcmerror;
3068         d11regs_t *regs;
3069         uint i;
3070         struct scb *nextscb;
3071         bool ta_ok;
3072         uint band;
3073         rw_reg_t *r;
3074         wlc_bsscfg_t *bsscfg;
3075         struct osl_info *osh;
3076         wlc_bss_info_t *current_bss;
3077
3078         /* update bsscfg pointer */
3079         bsscfg = NULL;          /* XXX: Hack bsscfg to be size one and use this globally */
3080         current_bss = NULL;
3081
3082         /* initialize the following to get rid of compiler warning */
3083         nextscb = NULL;
3084         ta_ok = false;
3085         band = 0;
3086         r = NULL;
3087
3088         /* If the device is turned off, then it's not "removed" */
3089         if (!wlc->pub->hw_off && DEVICEREMOVED(wlc)) {
3090                 WL_ERROR("wl%d: %s: dead chip\n", wlc->pub->unit, __func__);
3091                 wl_down(wlc->wl);
3092                 return BCME_ERROR;
3093         }
3094
3095         ASSERT(!(wlc->pub->hw_off && wlc->pub->up));
3096
3097         /* default argument is generic integer */
3098         pval = arg ? (int *)arg:NULL;
3099
3100         /* This will prevent the misaligned access */
3101         if (pval && (u32) len >= sizeof(val))
3102                 bcopy(pval, &val, sizeof(val));
3103         else
3104                 val = 0;
3105
3106         /* bool conversion to avoid duplication below */
3107         bool_val = val != 0;
3108
3109         if (cmd != WLC_SET_CHANNEL)
3110                 WL_NONE("WLC_IOCTL: cmd %d val 0x%x (%d) len %d\n",
3111                         cmd, (uint)val, val, len);
3112
3113         bcmerror = 0;
3114         regs = wlc->regs;
3115         osh = wlc->osh;
3116
3117         /* A few commands don't need any arguments; all the others do. */
3118         switch (cmd) {
3119         case WLC_UP:
3120         case WLC_OUT:
3121         case WLC_DOWN:
3122         case WLC_DISASSOC:
3123         case WLC_RESTART:
3124         case WLC_REBOOT:
3125         case WLC_START_CHANNEL_QA:
3126         case WLC_INIT:
3127                 break;
3128
3129         default:
3130                 if ((arg == NULL) || (len <= 0)) {
3131                         WL_ERROR("wl%d: %s: Command %d needs arguments\n",
3132                                  wlc->pub->unit, __func__, cmd);
3133                         bcmerror = BCME_BADARG;
3134                         goto done;
3135                 }
3136         }
3137
3138         switch (cmd) {
3139
3140 #if defined(BCMDBG)
3141         case WLC_GET_MSGLEVEL:
3142                 *pval = wl_msg_level;
3143                 break;
3144
3145         case WLC_SET_MSGLEVEL:
3146                 wl_msg_level = val;
3147                 break;
3148 #endif
3149
3150         case WLC_GET_INSTANCE:
3151                 *pval = wlc->pub->unit;
3152                 break;
3153
3154         case WLC_GET_CHANNEL:{
3155                         channel_info_t *ci = (channel_info_t *) arg;
3156
3157                         ASSERT(len > (int)sizeof(ci));
3158
3159                         ci->hw_channel =
3160                             CHSPEC_CHANNEL(WLC_BAND_PI_RADIO_CHANSPEC);
3161                         ci->target_channel =
3162                             CHSPEC_CHANNEL(wlc->default_bss->chanspec);
3163                         ci->scan_channel = 0;
3164
3165                         break;
3166                 }
3167
3168         case WLC_SET_CHANNEL:{
3169                         chanspec_t chspec = CH20MHZ_CHSPEC(val);
3170
3171                         if (val < 0 || val > MAXCHANNEL) {
3172                                 bcmerror = BCME_OUTOFRANGECHAN;
3173                                 break;
3174                         }
3175
3176                         if (!wlc_valid_chanspec_db(wlc->cmi, chspec)) {
3177                                 bcmerror = BCME_BADCHAN;
3178                                 break;
3179                         }
3180
3181                         if (!wlc->pub->up && IS_MBAND_UNLOCKED(wlc)) {
3182                                 if (wlc->band->bandunit !=
3183                                     CHSPEC_WLCBANDUNIT(chspec))
3184                                         wlc->bandinit_pending = true;
3185                                 else
3186                                         wlc->bandinit_pending = false;
3187                         }
3188
3189                         wlc->default_bss->chanspec = chspec;
3190                         /* wlc_BSSinit() will sanitize the rateset before using it.. */
3191                         if (wlc->pub->up && !wlc->pub->associated &&
3192                             (WLC_BAND_PI_RADIO_CHANSPEC != chspec)) {
3193                                 wlc_set_home_chanspec(wlc, chspec);
3194                                 wlc_suspend_mac_and_wait(wlc);
3195                                 wlc_set_chanspec(wlc, chspec);
3196                                 wlc_enable_mac(wlc);
3197                         }
3198                         break;
3199                 }
3200
3201 #if defined(BCMDBG)
3202         case WLC_GET_UCFLAGS:
3203                 if (!wlc->pub->up) {
3204                         bcmerror = BCME_NOTUP;
3205                         break;
3206                 }
3207
3208                 /* optional band is stored in the second integer of incoming buffer */
3209                 band =
3210                     (len <
3211                      (int)(2 * sizeof(int))) ? WLC_BAND_AUTO : ((int *)arg)[1];
3212
3213                 /* bcmerror checking */
3214                 bcmerror = wlc_iocregchk(wlc, band);
3215                 if (bcmerror)
3216                         break;
3217
3218                 if (val >= MHFMAX) {
3219                         bcmerror = BCME_RANGE;
3220                         break;
3221                 }
3222
3223                 *pval = wlc_bmac_mhf_get(wlc->hw, (u8) val, WLC_BAND_AUTO);
3224                 break;
3225
3226         case WLC_SET_UCFLAGS:
3227                 if (!wlc->pub->up) {
3228                         bcmerror = BCME_NOTUP;
3229                         break;
3230                 }
3231
3232                 /* optional band is stored in the second integer of incoming buffer */
3233                 band =
3234                     (len <
3235                      (int)(2 * sizeof(int))) ? WLC_BAND_AUTO : ((int *)arg)[1];
3236
3237                 /* bcmerror checking */
3238                 bcmerror = wlc_iocregchk(wlc, band);
3239                 if (bcmerror)
3240                         break;
3241
3242                 i = (u16) val;
3243                 if (i >= MHFMAX) {
3244                         bcmerror = BCME_RANGE;
3245                         break;
3246                 }
3247
3248                 wlc_mhf(wlc, (u8) i, 0xffff, (u16) (val >> NBITS(u16)),
3249                         WLC_BAND_AUTO);
3250                 break;
3251
3252         case WLC_GET_SHMEM:
3253                 ta_ok = true;
3254
3255                 /* optional band is stored in the second integer of incoming buffer */
3256                 band =
3257                     (len <
3258                      (int)(2 * sizeof(int))) ? WLC_BAND_AUTO : ((int *)arg)[1];
3259
3260                 /* bcmerror checking */
3261                 bcmerror = wlc_iocregchk(wlc, band);
3262                 if (bcmerror)
3263                         break;
3264
3265                 if (val & 1) {
3266                         bcmerror = BCME_BADADDR;
3267                         break;
3268                 }
3269
3270                 *pval = wlc_read_shm(wlc, (u16) val);
3271                 break;
3272
3273         case WLC_SET_SHMEM:
3274                 ta_ok = true;
3275
3276                 /* optional band is stored in the second integer of incoming buffer */
3277                 band =
3278                     (len <
3279                      (int)(2 * sizeof(int))) ? WLC_BAND_AUTO : ((int *)arg)[1];
3280
3281                 /* bcmerror checking */
3282                 bcmerror = wlc_iocregchk(wlc, band);
3283                 if (bcmerror)
3284                         break;
3285
3286                 if (val & 1) {
3287                         bcmerror = BCME_BADADDR;
3288                         break;
3289                 }
3290
3291                 wlc_write_shm(wlc, (u16) val,
3292                               (u16) (val >> NBITS(u16)));
3293                 break;
3294
3295         case WLC_R_REG: /* MAC registers */
3296                 ta_ok = true;
3297                 r = (rw_reg_t *) arg;
3298                 band = WLC_BAND_AUTO;
3299
3300                 if (len < (int)(sizeof(rw_reg_t) - sizeof(uint))) {
3301                         bcmerror = BCME_BUFTOOSHORT;
3302                         break;
3303                 }
3304
3305                 if (len >= (int)sizeof(rw_reg_t))
3306                         band = r->band;
3307
3308                 /* bcmerror checking */
3309                 bcmerror = wlc_iocregchk(wlc, band);
3310                 if (bcmerror)
3311                         break;
3312
3313                 if ((r->byteoff + r->size) > sizeof(d11regs_t)) {
3314                         bcmerror = BCME_BADADDR;
3315                         break;
3316                 }
3317                 if (r->size == sizeof(u32))
3318                         r->val =
3319                             R_REG(osh,
3320                                   (u32 *)((unsigned char *)(unsigned long)regs +
3321                                               r->byteoff));
3322                 else if (r->size == sizeof(u16))
3323                         r->val =
3324                             R_REG(osh,
3325                                   (u16 *)((unsigned char *)(unsigned long)regs +
3326                                               r->byteoff));
3327                 else
3328                         bcmerror = BCME_BADADDR;
3329                 break;
3330
3331         case WLC_W_REG:
3332                 ta_ok = true;
3333                 r = (rw_reg_t *) arg;
3334                 band = WLC_BAND_AUTO;
3335
3336                 if (len < (int)(sizeof(rw_reg_t) - sizeof(uint))) {
3337                         bcmerror = BCME_BUFTOOSHORT;
3338                         break;
3339                 }
3340
3341                 if (len >= (int)sizeof(rw_reg_t))
3342                         band = r->band;
3343
3344                 /* bcmerror checking */
3345                 bcmerror = wlc_iocregchk(wlc, band);
3346                 if (bcmerror)
3347                         break;
3348
3349                 if (r->byteoff + r->size > sizeof(d11regs_t)) {
3350                         bcmerror = BCME_BADADDR;
3351                         break;
3352                 }
3353                 if (r->size == sizeof(u32))
3354                         W_REG(osh,
3355                               (u32 *)((unsigned char *)(unsigned long) regs +
3356                                           r->byteoff), r->val);
3357                 else if (r->size == sizeof(u16))
3358                         W_REG(osh,
3359                               (u16 *)((unsigned char *)(unsigned long) regs +
3360                                           r->byteoff), r->val);
3361                 else
3362                         bcmerror = BCME_BADADDR;
3363                 break;
3364 #endif                          /* BCMDBG */
3365
3366         case WLC_GET_TXANT:
3367                 *pval = wlc->stf->txant;
3368                 break;
3369
3370         case WLC_SET_TXANT:
3371                 bcmerror = wlc_stf_ant_txant_validate(wlc, (s8) val);
3372                 if (bcmerror < 0)
3373                         break;
3374
3375                 wlc->stf->txant = (s8) val;
3376
3377                 /* if down, we are done */
3378                 if (!wlc->pub->up)
3379                         break;
3380
3381                 wlc_suspend_mac_and_wait(wlc);
3382
3383                 wlc_stf_phy_txant_upd(wlc);
3384                 wlc_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec);
3385
3386                 wlc_enable_mac(wlc);
3387
3388                 break;
3389
3390         case WLC_GET_ANTDIV:{
3391                         u8 phy_antdiv;
3392
3393                         /* return configured value if core is down */
3394                         if (!wlc->pub->up) {
3395                                 *pval = wlc->stf->ant_rx_ovr;
3396
3397                         } else {
3398                                 if (wlc_phy_ant_rxdiv_get
3399                                     (wlc->band->pi, &phy_antdiv))
3400                                         *pval = (int)phy_antdiv;
3401                                 else
3402                                         *pval = (int)wlc->stf->ant_rx_ovr;
3403                         }
3404
3405                         break;
3406                 }
3407         case WLC_SET_ANTDIV:
3408                 /* values are -1=driver default, 0=force0, 1=force1, 2=start1, 3=start0 */
3409                 if ((val < -1) || (val > 3)) {
3410                         bcmerror = BCME_RANGE;
3411                         break;
3412                 }
3413
3414                 if (val == -1)
3415                         val = ANT_RX_DIV_DEF;
3416
3417                 wlc->stf->ant_rx_ovr = (u8) val;
3418                 wlc_phy_ant_rxdiv_set(wlc->band->pi, (u8) val);
3419                 break;
3420
3421         case WLC_GET_RX_ANT:{   /* get latest used rx antenna */
3422                         u16 rxstatus;
3423
3424                         if (!wlc->pub->up) {
3425                                 bcmerror = BCME_NOTUP;
3426                                 break;
3427                         }
3428
3429                         rxstatus = R_REG(wlc->osh, &wlc->regs->phyrxstatus0);
3430                         if (rxstatus == 0xdead || rxstatus == (u16) -1) {
3431                                 bcmerror = BCME_ERROR;
3432                                 break;
3433                         }
3434                         *pval = (rxstatus & PRXS0_RXANT_UPSUBBAND) ? 1 : 0;
3435                         break;
3436                 }
3437
3438 #if defined(BCMDBG)
3439         case WLC_GET_UCANTDIV:
3440                 if (!wlc->clk) {
3441                         bcmerror = BCME_NOCLK;
3442                         break;
3443                 }
3444
3445                 *pval =
3446                     (wlc_bmac_mhf_get(wlc->hw, MHF1, WLC_BAND_AUTO) &
3447                      MHF1_ANTDIV);
3448                 break;
3449
3450         case WLC_SET_UCANTDIV:{
3451                         if (!wlc->pub->up) {
3452                                 bcmerror = BCME_NOTUP;
3453                                 break;
3454                         }
3455
3456                         /* if multiband, band must be locked */
3457                         if (IS_MBAND_UNLOCKED(wlc)) {
3458                                 bcmerror = BCME_NOTBANDLOCKED;
3459                                 break;
3460                         }
3461
3462                         /* 4322 supports antdiv in phy, no need to set it to ucode */
3463                         if (WLCISNPHY(wlc->band)
3464                             && D11REV_IS(wlc->pub->corerev, 16)) {
3465                                 WL_ERROR("wl%d: can't set ucantdiv for 4322\n",
3466                                          wlc->pub->unit);
3467                                 bcmerror = BCME_UNSUPPORTED;
3468                         } else
3469                                 wlc_mhf(wlc, MHF1, MHF1_ANTDIV,
3470                                         (val ? MHF1_ANTDIV : 0), WLC_BAND_AUTO);
3471                         break;
3472                 }
3473 #endif                          /* defined(BCMDBG) */
3474
3475         case WLC_GET_SRL:
3476                 *pval = wlc->SRL;
3477                 break;
3478
3479         case WLC_SET_SRL:
3480                 if (val >= 1 && val <= RETRY_SHORT_MAX) {
3481                         int ac;
3482                         wlc->SRL = (u16) val;
3483
3484                         wlc_bmac_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
3485
3486                         for (ac = 0; ac < AC_COUNT; ac++) {
3487                                 WLC_WME_RETRY_SHORT_SET(wlc, ac, wlc->SRL);
3488                         }
3489                         wlc_wme_retries_write(wlc);
3490                 } else
3491                         bcmerror = BCME_RANGE;
3492                 break;
3493
3494         case WLC_GET_LRL:
3495                 *pval = wlc->LRL;
3496                 break;
3497
3498         case WLC_SET_LRL:
3499                 if (val >= 1 && val <= 255) {
3500                         int ac;
3501                         wlc->LRL = (u16) val;
3502
3503                         wlc_bmac_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
3504
3505                         for (ac = 0; ac < AC_COUNT; ac++) {
3506                                 WLC_WME_RETRY_LONG_SET(wlc, ac, wlc->LRL);
3507                         }
3508                         wlc_wme_retries_write(wlc);
3509                 } else
3510                         bcmerror = BCME_RANGE;
3511                 break;
3512
3513         case WLC_GET_CWMIN:
3514                 *pval = wlc->band->CWmin;
3515                 break;
3516
3517         case WLC_SET_CWMIN:
3518                 if (!wlc->clk) {
3519                         bcmerror = BCME_NOCLK;
3520                         break;
3521                 }
3522
3523                 if (val >= 1 && val <= 255) {
3524                         wlc_set_cwmin(wlc, (u16) val);
3525                 } else
3526                         bcmerror = BCME_RANGE;
3527                 break;
3528
3529         case WLC_GET_CWMAX:
3530                 *pval = wlc->band->CWmax;
3531                 break;
3532
3533         case WLC_SET_CWMAX:
3534                 if (!wlc->clk) {
3535                         bcmerror = BCME_NOCLK;
3536                         break;
3537                 }
3538
3539                 if (val >= 255 && val <= 2047) {
3540                         wlc_set_cwmax(wlc, (u16) val);
3541                 } else
3542                         bcmerror = BCME_RANGE;
3543                 break;
3544
3545         case WLC_GET_RADIO:     /* use mask if don't want to expose some internal bits */
3546                 *pval = wlc->pub->radio_disabled;
3547                 break;
3548
3549         case WLC_SET_RADIO:{    /* 32 bits input, higher 16 bits are mask, lower 16 bits are value to
3550                                  * set
3551                                  */
3552                         u16 radiomask, radioval;
3553                         uint validbits =
3554                             WL_RADIO_SW_DISABLE | WL_RADIO_HW_DISABLE;
3555                         mbool new = 0;
3556
3557                         radiomask = (val & 0xffff0000) >> 16;
3558                         radioval = val & 0x0000ffff;
3559
3560                         if ((radiomask == 0) || (radiomask & ~validbits)
3561                             || (radioval & ~validbits)
3562                             || ((radioval & ~radiomask) != 0)) {
3563                                 WL_ERROR("SET_RADIO with wrong bits 0x%x\n",
3564                                          val);
3565                                 bcmerror = BCME_RANGE;
3566                                 break;
3567                         }
3568
3569                         new =
3570                             (wlc->pub->radio_disabled & ~radiomask) | radioval;
3571                         wlc->pub->radio_disabled = new;
3572
3573                         wlc_radio_hwdisable_upd(wlc);
3574                         wlc_radio_upd(wlc);
3575                         break;
3576                 }
3577
3578         case WLC_GET_PHYTYPE:
3579                 *pval = WLC_PHYTYPE(wlc->band->phytype);
3580                 break;
3581
3582 #if defined(BCMDBG)
3583         case WLC_GET_KEY:
3584                 if ((val >= 0) && (val < WLC_MAX_WSEC_KEYS(wlc))) {
3585                         wl_wsec_key_t key;
3586
3587                         wsec_key_t *src_key = wlc->wsec_keys[val];
3588
3589                         if (len < (int)sizeof(key)) {
3590                                 bcmerror = BCME_BUFTOOSHORT;
3591                                 break;
3592                         }
3593
3594                         memset((char *)&key, 0, sizeof(key));
3595                         if (src_key) {
3596                                 key.index = src_key->id;
3597                                 key.len = src_key->len;
3598                                 bcopy(src_key->data, key.data, key.len);
3599                                 key.algo = src_key->algo;
3600                                 if (WSEC_SOFTKEY(wlc, src_key, bsscfg))
3601                                         key.flags |= WL_SOFT_KEY;
3602                                 if (src_key->flags & WSEC_PRIMARY_KEY)
3603                                         key.flags |= WL_PRIMARY_KEY;
3604
3605                                 bcopy(src_key->ea.octet, key.ea.octet,
3606                                       ETH_ALEN);
3607                         }
3608
3609                         bcopy((char *)&key, arg, sizeof(key));
3610                 } else
3611                         bcmerror = BCME_BADKEYIDX;
3612                 break;
3613 #endif                          /* defined(BCMDBG) */
3614
3615         case WLC_SET_KEY:
3616                 bcmerror =
3617                     wlc_iovar_op(wlc, "wsec_key", NULL, 0, arg, len, IOV_SET,
3618                                  wlcif);
3619                 break;
3620
3621         case WLC_GET_KEY_SEQ:{
3622                         wsec_key_t *key;
3623
3624                         if (len < DOT11_WPA_KEY_RSC_LEN) {
3625                                 bcmerror = BCME_BUFTOOSHORT;
3626                                 break;
3627                         }
3628
3629                         /* Return the key's tx iv as an EAPOL sequence counter.
3630                          * This will be used to supply the RSC value to a supplicant.
3631                          * The format is 8 bytes, with least significant in seq[0].
3632                          */
3633
3634                         key = WSEC_KEY(wlc, val);
3635                         if ((val >= 0) && (val < WLC_MAX_WSEC_KEYS(wlc)) &&
3636                                 (key != NULL)) {
3637                                 u8 seq[DOT11_WPA_KEY_RSC_LEN];
3638                                 u16 lo;
3639                                 u32 hi;
3640                                 /* group keys in WPA-NONE (IBSS only, AES and TKIP) use a global TXIV */
3641                                 if ((bsscfg->WPA_auth & WPA_AUTH_NONE) &&
3642                                     is_zero_ether_addr(key->ea.octet)) {
3643                                         lo = bsscfg->wpa_none_txiv.lo;
3644                                         hi = bsscfg->wpa_none_txiv.hi;
3645                                 } else {
3646                                         lo = key->txiv.lo;
3647                                         hi = key->txiv.hi;
3648                                 }
3649
3650                                 /* format the buffer, low to high */
3651                                 seq[0] = lo & 0xff;
3652                                 seq[1] = (lo >> 8) & 0xff;
3653                                 seq[2] = hi & 0xff;
3654                                 seq[3] = (hi >> 8) & 0xff;
3655                                 seq[4] = (hi >> 16) & 0xff;
3656                                 seq[5] = (hi >> 24) & 0xff;
3657                                 seq[6] = 0;
3658                                 seq[7] = 0;
3659
3660                                 bcopy((char *)seq, arg, sizeof(seq));
3661                         } else {
3662                                 bcmerror = BCME_BADKEYIDX;
3663                         }
3664                         break;
3665                 }
3666
3667         case WLC_GET_CURR_RATESET:{
3668                         wl_rateset_t *ret_rs = (wl_rateset_t *) arg;
3669                         wlc_rateset_t *rs;
3670
3671                         if (bsscfg->associated)
3672                                 rs = &current_bss->rateset;
3673                         else
3674                                 rs = &wlc->default_bss->rateset;
3675
3676                         if (len < (int)(rs->count + sizeof(rs->count))) {
3677                                 bcmerror = BCME_BUFTOOSHORT;
3678                                 break;
3679                         }
3680
3681                         /* Copy only legacy rateset section */
3682                         ret_rs->count = rs->count;
3683                         bcopy(&rs->rates, &ret_rs->rates, rs->count);
3684                         break;
3685                 }
3686
3687         case WLC_GET_RATESET:{
3688                         wlc_rateset_t rs;
3689                         wl_rateset_t *ret_rs = (wl_rateset_t *) arg;
3690
3691                         memset(&rs, 0, sizeof(wlc_rateset_t));
3692                         wlc_default_rateset(wlc, (wlc_rateset_t *) &rs);
3693
3694                         if (len < (int)(rs.count + sizeof(rs.count))) {
3695                                 bcmerror = BCME_BUFTOOSHORT;
3696                                 break;
3697                         }
3698
3699                         /* Copy only legacy rateset section */
3700                         ret_rs->count = rs.count;
3701                         bcopy(&rs.rates, &ret_rs->rates, rs.count);
3702                         break;
3703                 }
3704
3705         case WLC_SET_RATESET:{
3706                         wlc_rateset_t rs;
3707                         wl_rateset_t *in_rs = (wl_rateset_t *) arg;
3708
3709                         if (len < (int)(in_rs->count + sizeof(in_rs->count))) {
3710                                 bcmerror = BCME_BUFTOOSHORT;
3711                                 break;
3712                         }
3713
3714                         if (in_rs->count > WLC_NUMRATES) {
3715                                 bcmerror = BCME_BUFTOOLONG;
3716                                 break;
3717                         }
3718
3719                         memset(&rs, 0, sizeof(wlc_rateset_t));
3720
3721                         /* Copy only legacy rateset section */
3722                         rs.count = in_rs->count;
3723                         bcopy(&in_rs->rates, &rs.rates, rs.count);
3724
3725                         /* merge rateset coming in with the current mcsset */
3726                         if (N_ENAB(wlc->pub)) {
3727                                 if (bsscfg->associated)
3728                                         bcopy(&current_bss->rateset.mcs[0],
3729                                               rs.mcs, MCSSET_LEN);
3730                                 else
3731                                         bcopy(&wlc->default_bss->rateset.mcs[0],
3732                                               rs.mcs, MCSSET_LEN);
3733                         }
3734
3735                         bcmerror = wlc_set_rateset(wlc, &rs);
3736
3737                         if (!bcmerror)
3738                                 wlc_ofdm_rateset_war(wlc);
3739
3740                         break;
3741                 }
3742
3743         case WLC_GET_BCNPRD:
3744                 if (BSSCFG_STA(bsscfg) && bsscfg->BSS && bsscfg->associated)
3745                         *pval = current_bss->beacon_period;
3746                 else
3747                         *pval = wlc->default_bss->beacon_period;
3748                 break;
3749
3750         case WLC_SET_BCNPRD:
3751                 /* range [1, 0xffff] */
3752                 if (val >= DOT11_MIN_BEACON_PERIOD
3753                     && val <= DOT11_MAX_BEACON_PERIOD) {
3754                         wlc->default_bss->beacon_period = (u16) val;
3755                 } else
3756                         bcmerror = BCME_RANGE;
3757                 break;
3758
3759         case WLC_GET_DTIMPRD:
3760                 if (BSSCFG_STA(bsscfg) && bsscfg->BSS && bsscfg->associated)
3761                         *pval = current_bss->dtim_period;
3762                 else
3763                         *pval = wlc->default_bss->dtim_period;
3764                 break;
3765
3766         case WLC_SET_DTIMPRD:
3767                 /* range [1, 0xff] */
3768                 if (val >= DOT11_MIN_DTIM_PERIOD
3769                     && val <= DOT11_MAX_DTIM_PERIOD) {
3770                         wlc->default_bss->dtim_period = (u8) val;
3771                 } else
3772                         bcmerror = BCME_RANGE;
3773                 break;
3774
3775 #ifdef SUPPORT_PS
3776         case WLC_GET_PM:
3777                 *pval = wlc->PM;
3778                 break;
3779
3780         case WLC_SET_PM:
3781                 if ((val >= PM_OFF) && (val <= PM_MAX)) {
3782                         wlc->PM = (u8) val;
3783                         if (wlc->pub->up) {
3784                         }
3785                         /* Change watchdog driver to align watchdog with tbtt if possible */
3786                         wlc_watchdog_upd(wlc, PS_ALLOWED(wlc));
3787                 } else
3788                         bcmerror = BCME_ERROR;
3789                 break;
3790 #endif                          /* SUPPORT_PS */
3791
3792 #ifdef SUPPORT_PS
3793 #ifdef BCMDBG
3794         case WLC_GET_WAKE:
3795                 if (AP_ENAB(wlc->pub)) {
3796                         bcmerror = BCME_NOTSTA;
3797                         break;
3798                 }
3799                 *pval = wlc->wake;
3800                 break;
3801
3802         case WLC_SET_WAKE:
3803                 if (AP_ENAB(wlc->pub)) {
3804                         bcmerror = BCME_NOTSTA;
3805                         break;
3806                 }
3807
3808                 wlc->wake = val ? true : false;
3809
3810                 /* if down, we're done */
3811                 if (!wlc->pub->up)
3812                         break;
3813
3814                 /* apply to the mac */
3815                 wlc_set_ps_ctrl(wlc);
3816                 break;
3817 #endif                          /* BCMDBG */
3818 #endif                          /* SUPPORT_PS */
3819
3820         case WLC_GET_REVINFO:
3821                 bcmerror = wlc_get_revision_info(wlc, arg, (uint) len);
3822                 break;
3823
3824         case WLC_GET_AP:
3825                 *pval = (int)AP_ENAB(wlc->pub);
3826                 break;
3827
3828         case WLC_GET_ATIM:
3829                 if (bsscfg->associated)
3830                         *pval = (int)current_bss->atim_window;
3831                 else
3832                         *pval = (int)wlc->default_bss->atim_window;
3833                 break;
3834
3835         case WLC_SET_ATIM:
3836                 wlc->default_bss->atim_window = (u32) val;
3837                 break;
3838
3839         case WLC_GET_PKTCNTS:{
3840                         get_pktcnt_t *pktcnt = (get_pktcnt_t *) pval;
3841                         if (WLC_UPDATE_STATS(wlc))
3842                                 wlc_statsupd(wlc);
3843                         pktcnt->rx_good_pkt = WLCNTVAL(wlc->pub->_cnt->rxframe);
3844                         pktcnt->rx_bad_pkt = WLCNTVAL(wlc->pub->_cnt->rxerror);
3845                         pktcnt->tx_good_pkt =
3846                             WLCNTVAL(wlc->pub->_cnt->txfrmsnt);
3847                         pktcnt->tx_bad_pkt =
3848                             WLCNTVAL(wlc->pub->_cnt->txerror) +
3849                             WLCNTVAL(wlc->pub->_cnt->txfail);
3850                         if (len >= (int)sizeof(get_pktcnt_t)) {
3851                                 /* Be backward compatible - only if buffer is large enough  */
3852                                 pktcnt->rx_ocast_good_pkt =
3853                                     WLCNTVAL(wlc->pub->_cnt->rxmfrmocast);
3854                         }
3855                         break;
3856                 }
3857
3858 #ifdef SUPPORT_HWKEY
3859         case WLC_GET_WSEC:
3860                 bcmerror =
3861                     wlc_iovar_op(wlc, "wsec", NULL, 0, arg, len, IOV_GET,
3862                                  wlcif);
3863                 break;
3864
3865         case WLC_SET_WSEC:
3866                 bcmerror =
3867                     wlc_iovar_op(wlc, "wsec", NULL, 0, arg, len, IOV_SET,
3868                                  wlcif);
3869                 break;
3870
3871         case WLC_GET_WPA_AUTH:
3872                 *pval = (int)bsscfg->WPA_auth;
3873                 break;
3874
3875         case WLC_SET_WPA_AUTH:
3876                 /* change of WPA_Auth modifies the PS_ALLOWED state */
3877                 if (BSSCFG_STA(bsscfg)) {
3878                         bsscfg->WPA_auth = (u16) val;
3879                 } else
3880                         bsscfg->WPA_auth = (u16) val;
3881                 break;
3882 #endif                          /* SUPPORT_HWKEY */
3883
3884         case WLC_GET_BANDLIST:
3885                 /* count of number of bands, followed by each band type */
3886                 *pval++ = NBANDS(wlc);
3887                 *pval++ = wlc->band->bandtype;
3888                 if (NBANDS(wlc) > 1)
3889                         *pval++ = wlc->bandstate[OTHERBANDUNIT(wlc)]->bandtype;
3890                 break;
3891
3892         case WLC_GET_BAND:
3893                 *pval = wlc->bandlocked ? wlc->band->bandtype : WLC_BAND_AUTO;
3894                 break;
3895
3896         case WLC_GET_PHYLIST:
3897                 {
3898                         unsigned char *cp = arg;
3899                         if (len < 3) {
3900                                 bcmerror = BCME_BUFTOOSHORT;
3901                                 break;
3902                         }
3903
3904                         if (WLCISNPHY(wlc->band)) {
3905                                 *cp++ = 'n';
3906                         } else if (WLCISLCNPHY(wlc->band)) {
3907                                 *cp++ = 'c';
3908                         } else if (WLCISSSLPNPHY(wlc->band)) {
3909                                 *cp++ = 's';
3910                         }
3911                         *cp = '\0';
3912                         break;
3913                 }
3914
3915         case WLC_GET_SHORTSLOT:
3916                 *pval = wlc->shortslot;
3917                 break;
3918
3919         case WLC_GET_SHORTSLOT_OVERRIDE:
3920                 *pval = wlc->shortslot_override;
3921                 break;
3922
3923         case WLC_SET_SHORTSLOT_OVERRIDE:
3924                 if ((val != WLC_SHORTSLOT_AUTO) &&
3925                     (val != WLC_SHORTSLOT_OFF) && (val != WLC_SHORTSLOT_ON)) {
3926                         bcmerror = BCME_RANGE;
3927                         break;
3928                 }
3929
3930                 wlc->shortslot_override = (s8) val;
3931
3932                 /* shortslot is an 11g feature, so no more work if we are
3933                  * currently on the 5G band
3934                  */
3935                 if (BAND_5G(wlc->band->bandtype))
3936                         break;
3937
3938                 if (wlc->pub->up && wlc->pub->associated) {
3939                         /* let watchdog or beacon processing update shortslot */
3940                 } else if (wlc->pub->up) {
3941                         /* unassociated shortslot is off */
3942                         wlc_switch_shortslot(wlc, false);
3943                 } else {
3944                         /* driver is down, so just update the wlc_info value */
3945                         if (wlc->shortslot_override == WLC_SHORTSLOT_AUTO) {
3946                                 wlc->shortslot = false;
3947                         } else {
3948                                 wlc->shortslot =
3949                                     (wlc->shortslot_override ==
3950                                      WLC_SHORTSLOT_ON);
3951                         }
3952                 }
3953
3954                 break;
3955
3956         case WLC_GET_LEGACY_ERP:
3957                 *pval = wlc->include_legacy_erp;
3958                 break;
3959
3960         case WLC_SET_LEGACY_ERP:
3961                 if (wlc->include_legacy_erp == bool_val)
3962                         break;
3963
3964                 wlc->include_legacy_erp = bool_val;
3965
3966                 if (AP_ENAB(wlc->pub) && wlc->clk) {
3967                         wlc_update_beacon(wlc);
3968                         wlc_update_probe_resp(wlc, true);
3969                 }
3970                 break;
3971
3972         case WLC_GET_GMODE:
3973                 if (wlc->band->bandtype == WLC_BAND_2G)
3974                         *pval = wlc->band->gmode;
3975                 else if (NBANDS(wlc) > 1)
3976                         *pval = wlc->bandstate[OTHERBANDUNIT(wlc)]->gmode;
3977                 break;
3978
3979         case WLC_SET_GMODE:
3980                 if (!wlc->pub->associated)
3981                         bcmerror = wlc_set_gmode(wlc, (u8) val, true);
3982                 else {
3983                         bcmerror = BCME_ASSOCIATED;
3984                         break;
3985                 }
3986                 break;
3987
3988         case WLC_GET_GMODE_PROTECTION:
3989                 *pval = wlc->protection->_g;
3990                 break;
3991
3992         case WLC_GET_PROTECTION_CONTROL:
3993                 *pval = wlc->protection->overlap;
3994                 break;
3995
3996         case WLC_SET_PROTECTION_CONTROL:
3997                 if ((val != WLC_PROTECTION_CTL_OFF) &&
3998                     (val != WLC_PROTECTION_CTL_LOCAL) &&
3999                     (val != WLC_PROTECTION_CTL_OVERLAP)) {
4000                         bcmerror = BCME_RANGE;
4001                         break;
4002                 }
4003
4004                 wlc_protection_upd(wlc, WLC_PROT_OVERLAP, (s8) val);
4005
4006                 /* Current g_protection will sync up to the specified control alg in watchdog
4007                  * if the driver is up and associated.
4008                  * If the driver is down or not associated, the control setting has no effect.
4009                  */
4010                 break;
4011
4012         case WLC_GET_GMODE_PROTECTION_OVERRIDE:
4013                 *pval = wlc->protection->g_override;
4014                 break;
4015
4016         case WLC_SET_GMODE_PROTECTION_OVERRIDE:
4017                 if ((val != WLC_PROTECTION_AUTO) &&
4018                     (val != WLC_PROTECTION_OFF) && (val != WLC_PROTECTION_ON)) {
4019                         bcmerror = BCME_RANGE;
4020                         break;
4021                 }
4022
4023                 wlc_protection_upd(wlc, WLC_PROT_G_OVR, (s8) val);
4024
4025                 break;
4026
4027         case WLC_SET_SUP_RATESET_OVERRIDE:{
4028                         wlc_rateset_t rs, new;
4029
4030                         /* copyin */
4031                         if (len < (int)sizeof(wlc_rateset_t)) {
4032                                 bcmerror = BCME_BUFTOOSHORT;
4033                                 break;
4034                         }
4035                         bcopy((char *)arg, (char *)&rs, sizeof(wlc_rateset_t));
4036
4037                         /* check for bad count value */
4038                         if (rs.count > WLC_NUMRATES) {
4039                                 bcmerror = BCME_BADRATESET;     /* invalid rateset */
4040                                 break;
4041                         }
4042
4043                         /* this command is only appropriate for gmode operation */
4044                         if (!(wlc->band->gmode ||
4045                               ((NBANDS(wlc) > 1)
4046                                && wlc->bandstate[OTHERBANDUNIT(wlc)]->gmode))) {
4047                                 bcmerror = BCME_BADBAND;        /* gmode only command when not in gmode */
4048                                 break;
4049                         }
4050
4051                         /* check for an empty rateset to clear the override */
4052                         if (rs.count == 0) {
4053                                 memset(&wlc->sup_rates_override, 0,
4054                                       sizeof(wlc_rateset_t));
4055                                 break;
4056                         }
4057
4058                         /* validate rateset by comparing pre and post sorted against 11g hw rates */
4059                         wlc_rateset_filter(&rs, &new, false, WLC_RATES_CCK_OFDM,
4060                                            RATE_MASK, BSS_N_ENAB(wlc, bsscfg));
4061                         wlc_rate_hwrs_filter_sort_validate(&new,
4062                                                            &cck_ofdm_rates,
4063                                                            false,
4064                                                            wlc->stf->txstreams);
4065                         if (rs.count != new.count) {
4066                                 bcmerror = BCME_BADRATESET;     /* invalid rateset */
4067                                 break;
4068                         }
4069
4070                         /* apply new rateset to the override */
4071                         bcopy((char *)&new, (char *)&wlc->sup_rates_override,
4072                               sizeof(wlc_rateset_t));
4073
4074                         /* update bcn and probe resp if needed */
4075                         if (wlc->pub->up && AP_ENAB(wlc->pub)
4076                             && wlc->pub->associated) {
4077                                 wlc_update_beacon(wlc);
4078                                 wlc_update_probe_resp(wlc, true);
4079                         }
4080                         break;
4081                 }
4082
4083         case WLC_GET_SUP_RATESET_OVERRIDE:
4084                 /* this command is only appropriate for gmode operation */
4085                 if (!(wlc->band->gmode ||
4086                       ((NBANDS(wlc) > 1)
4087                        && wlc->bandstate[OTHERBANDUNIT(wlc)]->gmode))) {
4088                         bcmerror = BCME_BADBAND;        /* gmode only command when not in gmode */
4089                         break;
4090                 }
4091                 if (len < (int)sizeof(wlc_rateset_t)) {
4092                         bcmerror = BCME_BUFTOOSHORT;
4093                         break;
4094                 }
4095                 bcopy((char *)&wlc->sup_rates_override, (char *)arg,
4096                       sizeof(wlc_rateset_t));
4097
4098                 break;
4099
4100         case WLC_GET_PRB_RESP_TIMEOUT:
4101                 *pval = wlc->prb_resp_timeout;
4102                 break;
4103
4104         case WLC_SET_PRB_RESP_TIMEOUT:
4105                 if (wlc->pub->up) {
4106                         bcmerror = BCME_NOTDOWN;
4107                         break;
4108                 }
4109                 if (val < 0 || val >= 0xFFFF) {
4110                         bcmerror = BCME_RANGE;  /* bad value */
4111                         break;
4112                 }
4113                 wlc->prb_resp_timeout = (u16) val;
4114                 break;
4115
4116         case WLC_GET_KEY_PRIMARY:{
4117                         wsec_key_t *key;
4118
4119                         /* treat the 'val' parm as the key id */
4120                         key = WSEC_BSS_DEFAULT_KEY(bsscfg);
4121                         if (key != NULL) {
4122                                 *pval = key->id == val ? true : false;
4123                         } else {
4124                                 bcmerror = BCME_BADKEYIDX;
4125                         }
4126                         break;
4127                 }
4128
4129         case WLC_SET_KEY_PRIMARY:{
4130                         wsec_key_t *key, *old_key;
4131
4132                         bcmerror = BCME_BADKEYIDX;
4133
4134                         /* treat the 'val' parm as the key id */
4135                         for (i = 0; i < WSEC_MAX_DEFAULT_KEYS; i++) {
4136                                 key = bsscfg->bss_def_keys[i];
4137                                 if (key != NULL && key->id == val) {
4138                                         old_key = WSEC_BSS_DEFAULT_KEY(bsscfg);
4139                                         if (old_key != NULL)
4140                                                 old_key->flags &=
4141                                                     ~WSEC_PRIMARY_KEY;
4142                                         key->flags |= WSEC_PRIMARY_KEY;
4143                                         bsscfg->wsec_index = i;
4144                                         bcmerror = BCME_OK;
4145                                 }
4146                         }
4147                         break;
4148                 }
4149
4150 #ifdef BCMDBG
4151         case WLC_INIT:
4152                 wl_init(wlc->wl);
4153                 break;
4154 #endif
4155
4156         case WLC_SET_VAR:
4157         case WLC_GET_VAR:{
4158                         char *name;
4159                         /* validate the name value */
4160                         name = (char *)arg;
4161                         for (i = 0; i < (uint) len && *name != '\0';
4162                              i++, name++)
4163                                 ;
4164
4165                         if (i == (uint) len) {
4166                                 bcmerror = BCME_BUFTOOSHORT;
4167                                 break;
4168                         }
4169                         i++;    /* include the null in the string length */
4170
4171                         if (cmd == WLC_GET_VAR) {
4172                                 bcmerror =
4173                                     wlc_iovar_op(wlc, arg,
4174                                                  (void *)((s8 *) arg + i),
4175                                                  len - i, arg, len, IOV_GET,
4176                                                  wlcif);
4177                         } else
4178                                 bcmerror =
4179                                     wlc_iovar_op(wlc, arg, NULL, 0,
4180                                                  (void *)((s8 *) arg + i),
4181                                                  len - i, IOV_SET, wlcif);
4182
4183                         break;
4184                 }
4185
4186         case WLC_SET_WSEC_PMK:
4187                 bcmerror = BCME_UNSUPPORTED;
4188                 break;
4189
4190 #if defined(BCMDBG)
4191         case WLC_CURRENT_PWR:
4192                 if (!wlc->pub->up)
4193                         bcmerror = BCME_NOTUP;
4194                 else
4195                         bcmerror = wlc_get_current_txpwr(wlc, arg, len);
4196                 break;
4197 #endif
4198
4199         case WLC_LAST:
4200                 WL_ERROR("%s: WLC_LAST\n", __func__);
4201         }
4202  done:
4203
4204         if (bcmerror) {
4205                 if (VALID_BCMERROR(bcmerror))
4206                         wlc->pub->bcmerror = bcmerror;
4207                 else {
4208                         bcmerror = 0;
4209                 }
4210
4211         }
4212         /* BMAC_NOTE: for HIGH_ONLY driver, this seems being called after RPC bus failed */
4213         /* In hw_off condition, IOCTLs that reach here are deemed safe but taclear would
4214          * certainly result in getting -1 for register reads. So skip ta_clear altogether
4215          */
4216         if (!(wlc->pub->hw_off))
4217                 ASSERT(wlc_bmac_taclear(wlc->hw, ta_ok) || !ta_ok);
4218
4219         return bcmerror;
4220 }
4221
4222 #if defined(BCMDBG)
4223 /* consolidated register access ioctl error checking */
4224 int wlc_iocregchk(struct wlc_info *wlc, uint band)
4225 {
4226         /* if band is specified, it must be the current band */
4227         if ((band != WLC_BAND_AUTO) && (band != (uint) wlc->band->bandtype))
4228                 return BCME_BADBAND;
4229
4230         /* if multiband and band is not specified, band must be locked */
4231         if ((band == WLC_BAND_AUTO) && IS_MBAND_UNLOCKED(wlc))
4232                 return BCME_NOTBANDLOCKED;
4233
4234         /* must have core clocks */
4235         if (!wlc->clk)
4236                 return BCME_NOCLK;
4237
4238         return 0;
4239 }
4240 #endif                          /* defined(BCMDBG) */
4241
4242 #if defined(BCMDBG)
4243 /* For some ioctls, make sure that the pi pointer matches the current phy */
4244 int wlc_iocpichk(struct wlc_info *wlc, uint phytype)
4245 {
4246         if (wlc->band->phytype != phytype)
4247                 return BCME_BADBAND;
4248         return 0;
4249 }
4250 #endif
4251
4252 /* Look up the given var name in the given table */
4253 static const bcm_iovar_t *wlc_iovar_lookup(const bcm_iovar_t *table,
4254                                            const char *name)
4255 {
4256         const bcm_iovar_t *vi;
4257         const char *lookup_name;
4258
4259         /* skip any ':' delimited option prefixes */
4260         lookup_name = strrchr(name, ':');
4261         if (lookup_name != NULL)
4262                 lookup_name++;
4263         else
4264                 lookup_name = name;
4265
4266         ASSERT(table != NULL);
4267
4268         for (vi = table; vi->name; vi++) {
4269                 if (!strcmp(vi->name, lookup_name))
4270                         return vi;
4271         }
4272         /* ran to end of table */
4273
4274         return NULL;            /* var name not found */
4275 }
4276
4277 /* simplified integer get interface for common WLC_GET_VAR ioctl handler */
4278 int wlc_iovar_getint(struct wlc_info *wlc, const char *name, int *arg)
4279 {
4280         return wlc_iovar_op(wlc, name, NULL, 0, arg, sizeof(s32), IOV_GET,
4281                             NULL);
4282 }
4283
4284 /* simplified integer set interface for common WLC_SET_VAR ioctl handler */
4285 int wlc_iovar_setint(struct wlc_info *wlc, const char *name, int arg)
4286 {
4287         return wlc_iovar_op(wlc, name, NULL, 0, (void *)&arg, sizeof(arg),
4288                             IOV_SET, NULL);
4289 }
4290
4291 /* simplified s8 get interface for common WLC_GET_VAR ioctl handler */
4292 int wlc_iovar_gets8(struct wlc_info *wlc, const char *name, s8 *arg)
4293 {
4294         int iovar_int;
4295         int err;
4296
4297         err =
4298             wlc_iovar_op(wlc, name, NULL, 0, &iovar_int, sizeof(iovar_int),
4299                          IOV_GET, NULL);
4300         if (!err)
4301                 *arg = (s8) iovar_int;
4302
4303         return err;
4304 }
4305
4306 /*
4307  * register iovar table, watchdog and down handlers.
4308  * calling function must keep 'iovars' until wlc_module_unregister is called.
4309  * 'iovar' must have the last entry's name field being NULL as terminator.
4310  */
4311 int wlc_module_register(struct wlc_pub *pub, const bcm_iovar_t *iovars,
4312                         const char *name, void *hdl, iovar_fn_t i_fn,
4313                         watchdog_fn_t w_fn, down_fn_t d_fn)
4314 {
4315         struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
4316         int i;
4317
4318         ASSERT(name != NULL);
4319         ASSERT(i_fn != NULL || w_fn != NULL || d_fn != NULL);
4320
4321         /* find an empty entry and just add, no duplication check! */
4322         for (i = 0; i < WLC_MAXMODULES; i++) {
4323                 if (wlc->modulecb[i].name[0] == '\0') {
4324                         strncpy(wlc->modulecb[i].name, name,
4325                                 sizeof(wlc->modulecb[i].name) - 1);
4326                         wlc->modulecb[i].iovars = iovars;
4327                         wlc->modulecb[i].hdl = hdl;
4328                         wlc->modulecb[i].iovar_fn = i_fn;
4329                         wlc->modulecb[i].watchdog_fn = w_fn;
4330                         wlc->modulecb[i].down_fn = d_fn;
4331                         return 0;
4332                 }
4333         }
4334
4335         /* it is time to increase the capacity */
4336         ASSERT(i < WLC_MAXMODULES);
4337         return BCME_NORESOURCE;
4338 }
4339
4340 /* unregister module callbacks */
4341 int wlc_module_unregister(struct wlc_pub *pub, const char *name, void *hdl)
4342 {
4343         struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
4344         int i;
4345
4346         if (wlc == NULL)
4347                 return BCME_NOTFOUND;
4348
4349         ASSERT(name != NULL);
4350
4351         for (i = 0; i < WLC_MAXMODULES; i++) {
4352                 if (!strcmp(wlc->modulecb[i].name, name) &&
4353                     (wlc->modulecb[i].hdl == hdl)) {
4354                         memset(&wlc->modulecb[i], 0, sizeof(modulecb_t));
4355                         return 0;
4356                 }
4357         }
4358
4359         /* table not found! */
4360         return BCME_NOTFOUND;
4361 }
4362
4363 /* Write WME tunable parameters for retransmit/max rate from wlc struct to ucode */
4364 static void wlc_wme_retries_write(struct wlc_info *wlc)
4365 {
4366         int ac;
4367
4368         /* Need clock to do this */
4369         if (!wlc->clk)
4370                 return;
4371
4372         for (ac = 0; ac < AC_COUNT; ac++) {
4373                 wlc_write_shm(wlc, M_AC_TXLMT_ADDR(ac), wlc->wme_retries[ac]);
4374         }
4375 }
4376
4377 /* Get or set an iovar.  The params/p_len pair specifies any additional
4378  * qualifying parameters (e.g. an "element index") for a get, while the
4379  * arg/len pair is the buffer for the value to be set or retrieved.
4380  * Operation (get/set) is specified by the last argument.
4381  * interface context provided by wlcif
4382  *
4383  * All pointers may point into the same buffer.
4384  */
4385 int
4386 wlc_iovar_op(struct wlc_info *wlc, const char *name,
4387              void *params, int p_len, void *arg, int len,
4388              bool set, struct wlc_if *wlcif)
4389 {
4390         int err = 0;
4391         int val_size;
4392         const bcm_iovar_t *vi = NULL;
4393         u32 actionid;
4394         int i;
4395
4396         ASSERT(name != NULL);
4397
4398         ASSERT(len >= 0);
4399
4400         /* Get MUST have return space */
4401         ASSERT(set || (arg && len));
4402
4403         ASSERT(!(wlc->pub->hw_off && wlc->pub->up));
4404
4405         /* Set does NOT take qualifiers */
4406         ASSERT(!set || (!params && !p_len));
4407
4408         if (!set && (len == sizeof(int)) &&
4409             !(IS_ALIGNED((unsigned long)(arg), (uint) sizeof(int)))) {
4410                 WL_ERROR("wl%d: %s unaligned get ptr for %s\n",
4411                          wlc->pub->unit, __func__, name);
4412                 ASSERT(0);
4413         }
4414
4415         /* find the given iovar name */
4416         for (i = 0; i < WLC_MAXMODULES; i++) {
4417                 if (!wlc->modulecb[i].iovars)
4418                         continue;
4419                 vi = wlc_iovar_lookup(wlc->modulecb[i].iovars, name);
4420                 if (vi)
4421                         break;
4422         }
4423         /* iovar name not found */
4424         if (i >= WLC_MAXMODULES) {
4425                 err = BCME_UNSUPPORTED;
4426                 goto exit;
4427         }
4428
4429         /* set up 'params' pointer in case this is a set command so that
4430          * the convenience int and bool code can be common to set and get
4431          */
4432         if (params == NULL) {
4433                 params = arg;
4434                 p_len = len;
4435         }
4436
4437         if (vi->type == IOVT_VOID)
4438                 val_size = 0;
4439         else if (vi->type == IOVT_BUFFER)
4440                 val_size = len;
4441         else
4442                 /* all other types are integer sized */
4443                 val_size = sizeof(int);
4444
4445         actionid = set ? IOV_SVAL(vi->varid) : IOV_GVAL(vi->varid);
4446
4447         /* Do the actual parameter implementation */
4448         err = wlc->modulecb[i].iovar_fn(wlc->modulecb[i].hdl, vi, actionid,
4449                                         name, params, p_len, arg, len, val_size,
4450                                         wlcif);
4451
4452  exit:
4453         return err;
4454 }
4455
4456 int
4457 wlc_iovar_check(struct wlc_pub *pub, const bcm_iovar_t *vi, void *arg, int len,
4458                 bool set)
4459 {
4460         struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
4461         int err = 0;
4462         s32 int_val = 0;
4463
4464         /* check generic condition flags */
4465         if (set) {
4466                 if (((vi->flags & IOVF_SET_DOWN) && wlc->pub->up) ||
4467                     ((vi->flags & IOVF_SET_UP) && !wlc->pub->up)) {
4468                         err = (wlc->pub->up ? BCME_NOTDOWN : BCME_NOTUP);
4469                 } else if ((vi->flags & IOVF_SET_BAND)
4470                            && IS_MBAND_UNLOCKED(wlc)) {
4471                         err = BCME_NOTBANDLOCKED;
4472                 } else if ((vi->flags & IOVF_SET_CLK) && !wlc->clk) {
4473                         err = BCME_NOCLK;
4474                 }
4475         } else {
4476                 if (((vi->flags & IOVF_GET_DOWN) && wlc->pub->up) ||
4477                     ((vi->flags & IOVF_GET_UP) && !wlc->pub->up)) {
4478                         err = (wlc->pub->up ? BCME_NOTDOWN : BCME_NOTUP);
4479                 } else if ((vi->flags & IOVF_GET_BAND)
4480                            && IS_MBAND_UNLOCKED(wlc)) {
4481                         err = BCME_NOTBANDLOCKED;
4482                 } else if ((vi->flags & IOVF_GET_CLK) && !wlc->clk) {
4483                         err = BCME_NOCLK;
4484                 }
4485         }
4486
4487         if (err)
4488                 goto exit;
4489
4490         /* length check on io buf */
4491         err = bcm_iovar_lencheck(vi, arg, len, set);
4492         if (err)
4493                 goto exit;
4494
4495         /* On set, check value ranges for integer types */
4496         if (set) {
4497                 switch (vi->type) {
4498                 case IOVT_BOOL:
4499                 case IOVT_INT8:
4500                 case IOVT_INT16:
4501                 case IOVT_INT32:
4502                 case IOVT_UINT8:
4503                 case IOVT_UINT16:
4504                 case IOVT_UINT32:
4505                         bcopy(arg, &int_val, sizeof(int));
4506                         err = wlc_iovar_rangecheck(wlc, int_val, vi);
4507                         break;
4508                 }
4509         }
4510  exit:
4511         return err;
4512 }
4513
4514 /* handler for iovar table wlc_iovars */
4515 /*
4516  * IMPLEMENTATION NOTE: In order to avoid checking for get/set in each
4517  * iovar case, the switch statement maps the iovar id into separate get
4518  * and set values.  If you add a new iovar to the switch you MUST use
4519  * IOV_GVAL and/or IOV_SVAL in the case labels to avoid conflict with
4520  * another case.
4521  * Please use params for additional qualifying parameters.
4522  */
4523 int
4524 wlc_doiovar(void *hdl, const bcm_iovar_t *vi, u32 actionid,
4525             const char *name, void *params, uint p_len, void *arg, int len,
4526             int val_size, struct wlc_if *wlcif)
4527 {
4528         struct wlc_info *wlc = hdl;
4529         wlc_bsscfg_t *bsscfg;
4530         int err = 0;
4531         s32 int_val = 0;
4532         s32 int_val2 = 0;
4533         s32 *ret_int_ptr;
4534         bool bool_val;
4535         bool bool_val2;
4536         wlc_bss_info_t *current_bss;
4537
4538         WL_TRACE("wl%d: %s\n", wlc->pub->unit, __func__);
4539
4540         bsscfg = NULL;
4541         current_bss = NULL;
4542
4543         err = wlc_iovar_check(wlc->pub, vi, arg, len, IOV_ISSET(actionid));
4544         if (err != 0)
4545                 return err;
4546
4547         /* convenience int and bool vals for first 8 bytes of buffer */
4548         if (p_len >= (int)sizeof(int_val))
4549                 bcopy(params, &int_val, sizeof(int_val));
4550
4551         if (p_len >= (int)sizeof(int_val) * 2)
4552                 bcopy((void *)((unsigned long)params + sizeof(int_val)), &int_val2,
4553                       sizeof(int_val));
4554
4555         /* convenience int ptr for 4-byte gets (requires int aligned arg) */
4556         ret_int_ptr = (s32 *) arg;
4557
4558         bool_val = (int_val != 0) ? true : false;
4559         bool_val2 = (int_val2 != 0) ? true : false;
4560
4561         WL_TRACE("wl%d: %s: id %d\n",
4562                  wlc->pub->unit, __func__, IOV_ID(actionid));
4563         /* Do the actual parameter implementation */
4564         switch (actionid) {
4565
4566         case IOV_GVAL(IOV_QTXPOWER):{
4567                         uint qdbm;
4568                         bool override;
4569
4570                         err = wlc_phy_txpower_get(wlc->band->pi, &qdbm,
4571                                 &override);
4572                         if (err != BCME_OK)
4573                                 return err;
4574
4575                         /* Return qdbm units */
4576                         *ret_int_ptr =
4577                             qdbm | (override ? WL_TXPWR_OVERRIDE : 0);
4578                         break;
4579                 }
4580
4581                 /* As long as override is false, this only sets the *user* targets.
4582                    User can twiddle this all he wants with no harm.
4583                    wlc_phy_txpower_set() explicitly sets override to false if
4584                    not internal or test.
4585                  */
4586         case IOV_SVAL(IOV_QTXPOWER):{
4587                         u8 qdbm;
4588                         bool override;
4589
4590                         /* Remove override bit and clip to max qdbm value */
4591                         qdbm = (u8)min_t(u32, (int_val & ~WL_TXPWR_OVERRIDE), 0xff);
4592                         /* Extract override setting */
4593                         override = (int_val & WL_TXPWR_OVERRIDE) ? true : false;
4594                         err =
4595                             wlc_phy_txpower_set(wlc->band->pi, qdbm, override);
4596                         break;
4597                 }
4598
4599         case IOV_GVAL(IOV_MPC):
4600                 *ret_int_ptr = (s32) wlc->mpc;
4601                 break;
4602
4603         case IOV_SVAL(IOV_MPC):
4604                 wlc->mpc = bool_val;
4605                 wlc_radio_mpc_upd(wlc);
4606
4607                 break;
4608
4609         case IOV_GVAL(IOV_BCN_LI_BCN):
4610                 *ret_int_ptr = wlc->bcn_li_bcn;
4611                 break;
4612
4613         case IOV_SVAL(IOV_BCN_LI_BCN):
4614                 wlc->bcn_li_bcn = (u8) int_val;
4615                 if (wlc->pub->up)
4616                         wlc_bcn_li_upd(wlc);
4617                 break;
4618
4619         default:
4620                 WL_ERROR("wl%d: %s: unsupported\n", wlc->pub->unit, __func__);
4621                 err = BCME_UNSUPPORTED;
4622                 break;
4623         }
4624
4625         goto exit;              /* avoid unused label warning */
4626
4627  exit:
4628         return err;
4629 }
4630
4631 static int
4632 wlc_iovar_rangecheck(struct wlc_info *wlc, u32 val, const bcm_iovar_t *vi)
4633 {
4634         int err = 0;
4635         u32 min_val = 0;
4636         u32 max_val = 0;
4637
4638         /* Only ranged integers are checked */
4639         switch (vi->type) {
4640         case IOVT_INT32:
4641                 max_val |= 0x7fffffff;
4642                 /* fall through */
4643         case IOVT_INT16:
4644                 max_val |= 0x00007fff;
4645                 /* fall through */
4646         case IOVT_INT8:
4647                 max_val |= 0x0000007f;
4648                 min_val = ~max_val;
4649                 if (vi->flags & IOVF_NTRL)
4650                         min_val = 1;
4651                 else if (vi->flags & IOVF_WHL)
4652                         min_val = 0;
4653                 /* Signed values are checked against max_val and min_val */
4654                 if ((s32) val < (s32) min_val
4655                     || (s32) val > (s32) max_val)
4656                         err = BCME_RANGE;
4657                 break;
4658
4659         case IOVT_UINT32:
4660                 max_val |= 0xffffffff;
4661                 /* fall through */
4662         case IOVT_UINT16:
4663                 max_val |= 0x0000ffff;
4664                 /* fall through */
4665         case IOVT_UINT8:
4666                 max_val |= 0x000000ff;
4667                 if (vi->flags & IOVF_NTRL)
4668                         min_val = 1;
4669                 if ((val < min_val) || (val > max_val))
4670                         err = BCME_RANGE;
4671                 break;
4672         }
4673
4674         return err;
4675 }
4676
4677 #ifdef BCMDBG
4678 static const char *supr_reason[] = {
4679         "None", "PMQ Entry", "Flush request",
4680         "Previous frag failure", "Channel mismatch",
4681         "Lifetime Expiry", "Underflow"
4682 };
4683
4684 static void wlc_print_txs_status(u16 s)
4685 {
4686         printf("[15:12]  %d  frame attempts\n", (s & TX_STATUS_FRM_RTX_MASK) >>
4687                TX_STATUS_FRM_RTX_SHIFT);
4688         printf(" [11:8]  %d  rts attempts\n", (s & TX_STATUS_RTS_RTX_MASK) >>
4689                TX_STATUS_RTS_RTX_SHIFT);
4690         printf("    [7]  %d  PM mode indicated\n",
4691                ((s & TX_STATUS_PMINDCTD) ? 1 : 0));
4692         printf("    [6]  %d  intermediate status\n",
4693                ((s & TX_STATUS_INTERMEDIATE) ? 1 : 0));
4694         printf("    [5]  %d  AMPDU\n", (s & TX_STATUS_AMPDU) ? 1 : 0);
4695         printf("  [4:2]  %d  Frame Suppressed Reason (%s)\n",
4696                ((s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT),
4697                supr_reason[(s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT]);
4698         printf("    [1]  %d  acked\n", ((s & TX_STATUS_ACK_RCV) ? 1 : 0));
4699 }
4700 #endif                          /* BCMDBG */
4701
4702 void wlc_print_txstatus(tx_status_t *txs)
4703 {
4704 #if defined(BCMDBG)
4705         u16 s = txs->status;
4706         u16 ackphyrxsh = txs->ackphyrxsh;
4707
4708         printf("\ntxpkt (MPDU) Complete\n");
4709
4710         printf("FrameID: %04x   ", txs->frameid);
4711         printf("TxStatus: %04x", s);
4712         printf("\n");
4713 #ifdef BCMDBG
4714         wlc_print_txs_status(s);
4715 #endif
4716         printf("LastTxTime: %04x ", txs->lasttxtime);
4717         printf("Seq: %04x ", txs->sequence);
4718         printf("PHYTxStatus: %04x ", txs->phyerr);
4719         printf("RxAckRSSI: %04x ",
4720                (ackphyrxsh & PRXS1_JSSI_MASK) >> PRXS1_JSSI_SHIFT);
4721         printf("RxAckSQ: %04x", (ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
4722         printf("\n");
4723 #endif                          /* defined(BCMDBG) */
4724 }
4725
4726 #define MACSTATUPD(name) \
4727         wlc_ctrupd_cache(macstats.name, &wlc->core->macstat_snapshot->name, &wlc->pub->_cnt->name)
4728
4729 void wlc_statsupd(struct wlc_info *wlc)
4730 {
4731         int i;
4732 #ifdef BCMDBG
4733         u16 delta;
4734         u16 rxf0ovfl;
4735         u16 txfunfl[NFIFO];
4736 #endif                          /* BCMDBG */
4737
4738         /* if driver down, make no sense to update stats */
4739         if (!wlc->pub->up)
4740                 return;
4741
4742 #ifdef BCMDBG
4743         /* save last rx fifo 0 overflow count */
4744         rxf0ovfl = wlc->core->macstat_snapshot->rxf0ovfl;
4745
4746         /* save last tx fifo  underflow count */
4747         for (i = 0; i < NFIFO; i++)
4748                 txfunfl[i] = wlc->core->macstat_snapshot->txfunfl[i];
4749 #endif                          /* BCMDBG */
4750
4751 #ifdef BCMDBG
4752         /* check for rx fifo 0 overflow */
4753         delta = (u16) (wlc->core->macstat_snapshot->rxf0ovfl - rxf0ovfl);
4754         if (delta)
4755                 WL_ERROR("wl%d: %u rx fifo 0 overflows!\n",
4756                          wlc->pub->unit, delta);
4757
4758         /* check for tx fifo underflows */
4759         for (i = 0; i < NFIFO; i++) {
4760                 delta =
4761                     (u16) (wlc->core->macstat_snapshot->txfunfl[i] -
4762                               txfunfl[i]);
4763                 if (delta)
4764                         WL_ERROR("wl%d: %u tx fifo %d underflows!\n",
4765                                  wlc->pub->unit, delta, i);
4766         }
4767 #endif                          /* BCMDBG */
4768
4769         /* dot11 counter update */
4770
4771         WLCNTSET(wlc->pub->_cnt->txrts,
4772                  (wlc->pub->_cnt->rxctsucast -
4773                   wlc->pub->_cnt->d11cnt_txrts_off));
4774         WLCNTSET(wlc->pub->_cnt->rxcrc,
4775                  (wlc->pub->_cnt->rxbadfcs - wlc->pub->_cnt->d11cnt_rxcrc_off));
4776         WLCNTSET(wlc->pub->_cnt->txnocts,
4777                  ((wlc->pub->_cnt->txrtsfrm - wlc->pub->_cnt->rxctsucast) -
4778                   wlc->pub->_cnt->d11cnt_txnocts_off));
4779
4780         /* merge counters from dma module */
4781         for (i = 0; i < NFIFO; i++) {
4782                 if (wlc->hw->di[i]) {
4783                         WLCNTADD(wlc->pub->_cnt->txnobuf,
4784                                  (wlc->hw->di[i])->txnobuf);
4785                         WLCNTADD(wlc->pub->_cnt->rxnobuf,
4786                                  (wlc->hw->di[i])->rxnobuf);
4787                         WLCNTADD(wlc->pub->_cnt->rxgiant,
4788                                  (wlc->hw->di[i])->rxgiants);
4789                         dma_counterreset(wlc->hw->di[i]);
4790                 }
4791         }
4792
4793         /*
4794          * Aggregate transmit and receive errors that probably resulted
4795          * in the loss of a frame are computed on the fly.
4796          */
4797         WLCNTSET(wlc->pub->_cnt->txerror,
4798                  wlc->pub->_cnt->txnobuf + wlc->pub->_cnt->txnoassoc +
4799                  wlc->pub->_cnt->txuflo + wlc->pub->_cnt->txrunt +
4800                  wlc->pub->_cnt->dmade + wlc->pub->_cnt->dmada +
4801                  wlc->pub->_cnt->dmape);
4802         WLCNTSET(wlc->pub->_cnt->rxerror,
4803                  wlc->pub->_cnt->rxoflo + wlc->pub->_cnt->rxnobuf +
4804                  wlc->pub->_cnt->rxfragerr + wlc->pub->_cnt->rxrunt +
4805                  wlc->pub->_cnt->rxgiant + wlc->pub->_cnt->rxnoscb +
4806                  wlc->pub->_cnt->rxbadsrcmac);
4807         for (i = 0; i < NFIFO; i++)
4808                 WLCNTADD(wlc->pub->_cnt->rxerror, wlc->pub->_cnt->rxuflo[i]);
4809 }
4810
4811 bool wlc_chipmatch(u16 vendor, u16 device)
4812 {
4813         if (vendor != VENDOR_BROADCOM) {
4814                 WL_ERROR("wlc_chipmatch: unknown vendor id %04x\n", vendor);
4815                 return false;
4816         }
4817
4818         if ((device == BCM43224_D11N_ID) || (device == BCM43225_D11N2G_ID))
4819                 return true;
4820
4821         if (device == BCM4313_D11N2G_ID)
4822                 return true;
4823         if ((device == BCM43236_D11N_ID) || (device == BCM43236_D11N2G_ID))
4824                 return true;
4825
4826         WL_ERROR("wlc_chipmatch: unknown device id %04x\n", device);
4827         return false;
4828 }
4829
4830 #if defined(BCMDBG)
4831 void wlc_print_txdesc(d11txh_t *txh)
4832 {
4833         u16 mtcl = ltoh16(txh->MacTxControlLow);
4834         u16 mtch = ltoh16(txh->MacTxControlHigh);
4835         u16 mfc = ltoh16(txh->MacFrameControl);
4836         u16 tfest = ltoh16(txh->TxFesTimeNormal);
4837         u16 ptcw = ltoh16(txh->PhyTxControlWord);
4838         u16 ptcw_1 = ltoh16(txh->PhyTxControlWord_1);
4839         u16 ptcw_1_Fbr = ltoh16(txh->PhyTxControlWord_1_Fbr);
4840         u16 ptcw_1_Rts = ltoh16(txh->PhyTxControlWord_1_Rts);
4841         u16 ptcw_1_FbrRts = ltoh16(txh->PhyTxControlWord_1_FbrRts);
4842         u16 mainrates = ltoh16(txh->MainRates);
4843         u16 xtraft = ltoh16(txh->XtraFrameTypes);
4844         u8 *iv = txh->IV;
4845         u8 *ra = txh->TxFrameRA;
4846         u16 tfestfb = ltoh16(txh->TxFesTimeFallback);
4847         u8 *rtspfb = txh->RTSPLCPFallback;
4848         u16 rtsdfb = ltoh16(txh->RTSDurFallback);
4849         u8 *fragpfb = txh->FragPLCPFallback;
4850         u16 fragdfb = ltoh16(txh->FragDurFallback);
4851         u16 mmodelen = ltoh16(txh->MModeLen);
4852         u16 mmodefbrlen = ltoh16(txh->MModeFbrLen);
4853         u16 tfid = ltoh16(txh->TxFrameID);
4854         u16 txs = ltoh16(txh->TxStatus);
4855         u16 mnmpdu = ltoh16(txh->MaxNMpdus);
4856         u16 mabyte = ltoh16(txh->MaxABytes_MRT);
4857         u16 mabyte_f = ltoh16(txh->MaxABytes_FBR);
4858         u16 mmbyte = ltoh16(txh->MinMBytes);
4859
4860         u8 *rtsph = txh->RTSPhyHeader;
4861         struct dot11_rts_frame rts = txh->rts_frame;
4862         char hexbuf[256];
4863
4864         /* add plcp header along with txh descriptor */
4865         prhex("Raw TxDesc + plcp header", (unsigned char *) txh, sizeof(d11txh_t) + 48);
4866
4867         printf("TxCtlLow: %04x ", mtcl);
4868         printf("TxCtlHigh: %04x ", mtch);
4869         printf("FC: %04x ", mfc);
4870         printf("FES Time: %04x\n", tfest);
4871         printf("PhyCtl: %04x%s ", ptcw,
4872                (ptcw & PHY_TXC_SHORT_HDR) ? " short" : "");
4873         printf("PhyCtl_1: %04x ", ptcw_1);
4874         printf("PhyCtl_1_Fbr: %04x\n", ptcw_1_Fbr);
4875         printf("PhyCtl_1_Rts: %04x ", ptcw_1_Rts);
4876         printf("PhyCtl_1_Fbr_Rts: %04x\n", ptcw_1_FbrRts);
4877         printf("MainRates: %04x ", mainrates);
4878         printf("XtraFrameTypes: %04x ", xtraft);
4879         printf("\n");
4880
4881         bcm_format_hex(hexbuf, iv, sizeof(txh->IV));
4882         printf("SecIV:       %s\n", hexbuf);
4883         bcm_format_hex(hexbuf, ra, sizeof(txh->TxFrameRA));
4884         printf("RA:          %s\n", hexbuf);
4885
4886         printf("Fb FES Time: %04x ", tfestfb);
4887         bcm_format_hex(hexbuf, rtspfb, sizeof(txh->RTSPLCPFallback));
4888         printf("RTS PLCP: %s ", hexbuf);
4889         printf("RTS DUR: %04x ", rtsdfb);
4890         bcm_format_hex(hexbuf, fragpfb, sizeof(txh->FragPLCPFallback));
4891         printf("PLCP: %s ", hexbuf);
4892         printf("DUR: %04x", fragdfb);
4893         printf("\n");
4894
4895         printf("MModeLen: %04x ", mmodelen);
4896         printf("MModeFbrLen: %04x\n", mmodefbrlen);
4897
4898         printf("FrameID:     %04x\n", tfid);
4899         printf("TxStatus:    %04x\n", txs);
4900
4901         printf("MaxNumMpdu:  %04x\n", mnmpdu);
4902         printf("MaxAggbyte:  %04x\n", mabyte);
4903         printf("MaxAggbyte_fb:  %04x\n", mabyte_f);
4904         printf("MinByte:     %04x\n", mmbyte);
4905
4906         bcm_format_hex(hexbuf, rtsph, sizeof(txh->RTSPhyHeader));
4907         printf("RTS PLCP: %s ", hexbuf);
4908         bcm_format_hex(hexbuf, (u8 *) &rts, sizeof(txh->rts_frame));
4909         printf("RTS Frame: %s", hexbuf);
4910         printf("\n");
4911
4912 }
4913 #endif                          /* defined(BCMDBG) */
4914
4915 #if defined(BCMDBG)
4916 void wlc_print_rxh(d11rxhdr_t *rxh)
4917 {
4918         u16 len = rxh->RxFrameSize;
4919         u16 phystatus_0 = rxh->PhyRxStatus_0;
4920         u16 phystatus_1 = rxh->PhyRxStatus_1;
4921         u16 phystatus_2 = rxh->PhyRxStatus_2;
4922         u16 phystatus_3 = rxh->PhyRxStatus_3;
4923         u16 macstatus1 = rxh->RxStatus1;
4924         u16 macstatus2 = rxh->RxStatus2;
4925         char flagstr[64];
4926         char lenbuf[20];
4927         static const bcm_bit_desc_t macstat_flags[] = {
4928                 {RXS_FCSERR, "FCSErr"},
4929                 {RXS_RESPFRAMETX, "Reply"},
4930                 {RXS_PBPRES, "PADDING"},
4931                 {RXS_DECATMPT, "DeCr"},
4932                 {RXS_DECERR, "DeCrErr"},
4933                 {RXS_BCNSENT, "Bcn"},
4934                 {0, NULL}
4935         };
4936
4937         prhex("Raw RxDesc", (unsigned char *) rxh, sizeof(d11rxhdr_t));
4938
4939         bcm_format_flags(macstat_flags, macstatus1, flagstr, 64);
4940
4941         snprintf(lenbuf, sizeof(lenbuf), "0x%x", len);
4942
4943         printf("RxFrameSize:     %6s (%d)%s\n", lenbuf, len,
4944                (rxh->PhyRxStatus_0 & PRXS0_SHORTH) ? " short preamble" : "");
4945         printf("RxPHYStatus:     %04x %04x %04x %04x\n",
4946                phystatus_0, phystatus_1, phystatus_2, phystatus_3);
4947         printf("RxMACStatus:     %x %s\n", macstatus1, flagstr);
4948         printf("RXMACaggtype: %x\n", (macstatus2 & RXS_AGGTYPE_MASK));
4949         printf("RxTSFTime:       %04x\n", rxh->RxTSFTime);
4950 }
4951 #endif                          /* defined(BCMDBG) */
4952
4953 #if defined(BCMDBG)
4954 int wlc_format_ssid(char *buf, const unsigned char ssid[], uint ssid_len)
4955 {
4956         uint i, c;
4957         char *p = buf;
4958         char *endp = buf + SSID_FMT_BUF_LEN;
4959
4960         if (ssid_len > DOT11_MAX_SSID_LEN)
4961                 ssid_len = DOT11_MAX_SSID_LEN;
4962
4963         for (i = 0; i < ssid_len; i++) {
4964                 c = (uint) ssid[i];
4965                 if (c == '\\') {
4966                         *p++ = '\\';
4967                         *p++ = '\\';
4968                 } else if (isprint((unsigned char) c)) {
4969                         *p++ = (char)c;
4970                 } else {
4971                         p += snprintf(p, (endp - p), "\\x%02X", c);
4972                 }
4973         }
4974         *p = '\0';
4975         ASSERT(p < endp);
4976
4977         return (int)(p - buf);
4978 }
4979 #endif                          /* defined(BCMDBG) */
4980
4981 u16 wlc_rate_shm_offset(struct wlc_info *wlc, u8 rate)
4982 {
4983         return wlc_bmac_rate_shm_offset(wlc->hw, rate);
4984 }
4985
4986 /* Callback for device removed */
4987
4988 /*
4989  * Attempts to queue a packet onto a multiple-precedence queue,
4990  * if necessary evicting a lower precedence packet from the queue.
4991  *
4992  * 'prec' is the precedence number that has already been mapped
4993  * from the packet priority.
4994  *
4995  * Returns true if packet consumed (queued), false if not.
4996  */
4997 bool BCMFASTPATH
4998 wlc_prec_enq(struct wlc_info *wlc, struct pktq *q, void *pkt, int prec)
4999 {
5000         return wlc_prec_enq_head(wlc, q, pkt, prec, false);
5001 }
5002
5003 bool BCMFASTPATH
5004 wlc_prec_enq_head(struct wlc_info *wlc, struct pktq *q, struct sk_buff *pkt,
5005                   int prec, bool head)
5006 {
5007         struct sk_buff *p;
5008         int eprec = -1;         /* precedence to evict from */
5009
5010         /* Determine precedence from which to evict packet, if any */
5011         if (pktq_pfull(q, prec))
5012                 eprec = prec;
5013         else if (pktq_full(q)) {
5014                 p = pktq_peek_tail(q, &eprec);
5015                 ASSERT(p != NULL);
5016                 if (eprec > prec) {
5017                         WL_ERROR("%s: Failing: eprec %d > prec %d\n",
5018                                  __func__, eprec, prec);
5019                         return false;
5020                 }
5021         }
5022
5023         /* Evict if needed */
5024         if (eprec >= 0) {
5025                 bool discard_oldest;
5026
5027                 /* Detect queueing to unconfigured precedence */
5028                 ASSERT(!pktq_pempty(q, eprec));
5029
5030                 discard_oldest = AC_BITMAP_TST(wlc->wme_dp, eprec);
5031
5032                 /* Refuse newer packet unless configured to discard oldest */
5033                 if (eprec == prec && !discard_oldest) {
5034                         WL_ERROR("%s: No where to go, prec == %d\n",
5035                                  __func__, prec);
5036                         return false;
5037                 }
5038
5039                 /* Evict packet according to discard policy */
5040                 p = discard_oldest ? pktq_pdeq(q, eprec) : pktq_pdeq_tail(q,
5041                                                                           eprec);
5042                 ASSERT(p != NULL);
5043
5044                 /* Increment wme stats */
5045                 if (WME_ENAB(wlc->pub)) {
5046                         WLCNTINCR(wlc->pub->_wme_cnt->
5047                                   tx_failed[WME_PRIO2AC(p->priority)].packets);
5048                         WLCNTADD(wlc->pub->_wme_cnt->
5049                                  tx_failed[WME_PRIO2AC(p->priority)].bytes,
5050                                  pkttotlen(wlc->osh, p));
5051                 }
5052
5053                 ASSERT(0);
5054                 pkt_buf_free_skb(wlc->osh, p, true);
5055                 WLCNTINCR(wlc->pub->_cnt->txnobuf);
5056         }
5057
5058         /* Enqueue */
5059         if (head)
5060                 p = pktq_penq_head(q, prec, pkt);
5061         else
5062                 p = pktq_penq(q, prec, pkt);
5063         ASSERT(p != NULL);
5064
5065         return true;
5066 }
5067
5068 void BCMFASTPATH wlc_txq_enq(void *ctx, struct scb *scb, struct sk_buff *sdu,
5069                              uint prec)
5070 {
5071         struct wlc_info *wlc = (struct wlc_info *) ctx;
5072         wlc_txq_info_t *qi = wlc->active_queue; /* Check me */
5073         struct pktq *q = &qi->q;
5074         int prio;
5075
5076         prio = sdu->priority;
5077
5078         ASSERT(pktq_max(q) >= wlc->pub->tunables->datahiwat);
5079
5080         if (!wlc_prec_enq(wlc, q, sdu, prec)) {
5081                 if (!EDCF_ENAB(wlc->pub)
5082                     || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL))
5083                         WL_ERROR("wl%d: wlc_txq_enq: txq overflow\n",
5084                                  wlc->pub->unit);
5085
5086                 /* ASSERT(9 == 8); *//* XXX we might hit this condtion in case packet flooding from mac80211 stack */
5087                 pkt_buf_free_skb(wlc->osh, sdu, true);
5088                 WLCNTINCR(wlc->pub->_cnt->txnobuf);
5089         }
5090
5091         /* Check if flow control needs to be turned on after enqueuing the packet
5092          *   Don't turn on flow control if EDCF is enabled. Driver would make the decision on what
5093          *   to drop instead of relying on stack to make the right decision
5094          */
5095         if (!EDCF_ENAB(wlc->pub)
5096             || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL)) {
5097                 if (pktq_len(q) >= wlc->pub->tunables->datahiwat) {
5098                         wlc_txflowcontrol(wlc, qi, ON, ALLPRIO);
5099                 }
5100         } else if (wlc->pub->_priofc) {
5101                 if (pktq_plen(q, wlc_prio2prec_map[prio]) >=
5102                     wlc->pub->tunables->datahiwat) {
5103                         wlc_txflowcontrol(wlc, qi, ON, prio);
5104                 }
5105         }
5106 }
5107
5108 bool BCMFASTPATH
5109 wlc_sendpkt_mac80211(struct wlc_info *wlc, struct sk_buff *sdu,
5110                      struct ieee80211_hw *hw)
5111 {
5112         u8 prio;
5113         uint fifo;
5114         void *pkt;
5115         struct scb *scb = &global_scb;
5116         struct dot11_header *d11_header = (struct dot11_header *)(sdu->data);
5117         u16 type, fc;
5118
5119         ASSERT(sdu);
5120
5121         fc = ltoh16(d11_header->fc);
5122         type = FC_TYPE(fc);
5123
5124         /* 802.11 standard requires management traffic to go at highest priority */
5125         prio = (type == FC_TYPE_DATA ? sdu->priority : MAXPRIO);
5126         fifo = prio2fifo[prio];
5127
5128         ASSERT((uint) skb_headroom(sdu) >= TXOFF);
5129         ASSERT(!(sdu->cloned));
5130         ASSERT(!(sdu->next));
5131         ASSERT(!(sdu->prev));
5132         ASSERT(fifo < NFIFO);
5133
5134         pkt = sdu;
5135         if (unlikely
5136             (wlc_d11hdrs_mac80211(wlc, hw, pkt, scb, 0, 1, fifo, 0, NULL, 0)))
5137                 return -EINVAL;
5138         wlc_txq_enq(wlc, scb, pkt, WLC_PRIO_TO_PREC(prio));
5139         wlc_send_q(wlc, wlc->active_queue);
5140
5141         WLCNTINCR(wlc->pub->_cnt->ieee_tx);
5142         return 0;
5143 }
5144
5145 void BCMFASTPATH wlc_send_q(struct wlc_info *wlc, wlc_txq_info_t *qi)
5146 {
5147         struct sk_buff *pkt[DOT11_MAXNUMFRAGS];
5148         int prec;
5149         u16 prec_map;
5150         int err = 0, i, count;
5151         uint fifo;
5152         struct pktq *q = &qi->q;
5153         struct ieee80211_tx_info *tx_info;
5154
5155         /* only do work for the active queue */
5156         if (qi != wlc->active_queue)
5157                 return;
5158
5159         if (in_send_q)
5160                 return;
5161         else
5162                 in_send_q = true;
5163
5164         prec_map = wlc->tx_prec_map;
5165
5166         /* Send all the enq'd pkts that we can.
5167          * Dequeue packets with precedence with empty HW fifo only
5168          */
5169         while (prec_map && (pkt[0] = pktq_mdeq(q, prec_map, &prec))) {
5170                 tx_info = IEEE80211_SKB_CB(pkt[0]);
5171                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
5172                         err = wlc_sendampdu(wlc->ampdu, qi, pkt, prec);
5173                 } else {
5174                         count = 1;
5175                         err = wlc_prep_pdu(wlc, pkt[0], &fifo);
5176                         if (!err) {
5177                                 for (i = 0; i < count; i++) {
5178                                         wlc_txfifo(wlc, fifo, pkt[i], true, 1);
5179                                 }
5180                         }
5181                 }
5182
5183                 if (err == BCME_BUSY) {
5184                         pktq_penq_head(q, prec, pkt[0]);
5185                         /* If send failed due to any other reason than a change in
5186                          * HW FIFO condition, quit. Otherwise, read the new prec_map!
5187                          */
5188                         if (prec_map == wlc->tx_prec_map)
5189                                 break;
5190                         prec_map = wlc->tx_prec_map;
5191                 }
5192         }
5193
5194         /* Check if flow control needs to be turned off after sending the packet */
5195         if (!EDCF_ENAB(wlc->pub)
5196             || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL)) {
5197                 if (wlc_txflowcontrol_prio_isset(wlc, qi, ALLPRIO)
5198                     && (pktq_len(q) < wlc->pub->tunables->datahiwat / 2)) {
5199                         wlc_txflowcontrol(wlc, qi, OFF, ALLPRIO);
5200                 }
5201         } else if (wlc->pub->_priofc) {
5202                 int prio;
5203                 for (prio = MAXPRIO; prio >= 0; prio--) {
5204                         if (wlc_txflowcontrol_prio_isset(wlc, qi, prio) &&
5205                             (pktq_plen(q, wlc_prio2prec_map[prio]) <
5206                              wlc->pub->tunables->datahiwat / 2)) {
5207                                 wlc_txflowcontrol(wlc, qi, OFF, prio);
5208                         }
5209                 }
5210         }
5211         in_send_q = false;
5212 }
5213
5214 /*
5215  * bcmc_fid_generate:
5216  * Generate frame ID for a BCMC packet.  The frag field is not used
5217  * for MC frames so is used as part of the sequence number.
5218  */
5219 static inline u16
5220 bcmc_fid_generate(struct wlc_info *wlc, wlc_bsscfg_t *bsscfg, d11txh_t *txh)
5221 {
5222         u16 frameid;
5223
5224         frameid = ltoh16(txh->TxFrameID) & ~(TXFID_SEQ_MASK | TXFID_QUEUE_MASK);
5225         frameid |=
5226             (((wlc->
5227                mc_fid_counter++) << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
5228             TX_BCMC_FIFO;
5229
5230         return frameid;
5231 }
5232
5233 void BCMFASTPATH
5234 wlc_txfifo(struct wlc_info *wlc, uint fifo, struct sk_buff *p, bool commit,
5235            s8 txpktpend)
5236 {
5237         u16 frameid = INVALIDFID;
5238         d11txh_t *txh;
5239
5240         ASSERT(fifo < NFIFO);
5241         txh = (d11txh_t *) (p->data);
5242
5243         /* When a BC/MC frame is being committed to the BCMC fifo via DMA (NOT PIO), update
5244          * ucode or BSS info as appropriate.
5245          */
5246         if (fifo == TX_BCMC_FIFO) {
5247                 frameid = ltoh16(txh->TxFrameID);
5248
5249         }
5250
5251         if (WLC_WAR16165(wlc))
5252                 wlc_war16165(wlc, true);
5253
5254
5255         /* Bump up pending count for if not using rpc. If rpc is used, this will be handled
5256          * in wlc_bmac_txfifo()
5257          */
5258         if (commit) {
5259                 TXPKTPENDINC(wlc, fifo, txpktpend);
5260                 WL_TRACE("wlc_txfifo, pktpend inc %d to %d\n",
5261                          txpktpend, TXPKTPENDGET(wlc, fifo));
5262         }
5263
5264         /* Commit BCMC sequence number in the SHM frame ID location */
5265         if (frameid != INVALIDFID)
5266                 BCMCFID(wlc, frameid);
5267
5268         if (dma_txfast(wlc->hw->di[fifo], p, commit) < 0) {
5269                 WL_ERROR("wlc_txfifo: fatal, toss frames !!!\n");
5270         }
5271 }
5272
5273 static u16
5274 wlc_compute_airtime(struct wlc_info *wlc, ratespec_t rspec, uint length)
5275 {
5276         u16 usec = 0;
5277         uint mac_rate = RSPEC2RATE(rspec);
5278         uint nsyms;
5279
5280         if (IS_MCS(rspec)) {
5281                 /* not supported yet */
5282                 ASSERT(0);
5283         } else if (IS_OFDM(rspec)) {
5284                 /* nsyms = Ceiling(Nbits / (Nbits/sym))
5285                  *
5286                  * Nbits = length * 8
5287                  * Nbits/sym = Mbps * 4 = mac_rate * 2
5288                  */
5289                 nsyms = CEIL((length * 8), (mac_rate * 2));
5290
5291                 /* usec = symbols * usec/symbol */
5292                 usec = (u16) (nsyms * APHY_SYMBOL_TIME);
5293                 return usec;
5294         } else {
5295                 switch (mac_rate) {
5296                 case WLC_RATE_1M:
5297                         usec = length << 3;
5298                         break;
5299                 case WLC_RATE_2M:
5300                         usec = length << 2;
5301                         break;
5302                 case WLC_RATE_5M5:
5303                         usec = (length << 4) / 11;
5304                         break;
5305                 case WLC_RATE_11M:
5306                         usec = (length << 3) / 11;
5307                         break;
5308                 default:
5309                         WL_ERROR("wl%d: wlc_compute_airtime: unsupported rspec 0x%x\n",
5310                                  wlc->pub->unit, rspec);
5311                         ASSERT((const char *)"Bad phy_rate" == NULL);
5312                         break;
5313                 }
5314         }
5315
5316         return usec;
5317 }
5318
5319 void BCMFASTPATH
5320 wlc_compute_plcp(struct wlc_info *wlc, ratespec_t rspec, uint length, u8 *plcp)
5321 {
5322         if (IS_MCS(rspec)) {
5323                 wlc_compute_mimo_plcp(rspec, length, plcp);
5324         } else if (IS_OFDM(rspec)) {
5325                 wlc_compute_ofdm_plcp(rspec, length, plcp);
5326         } else {
5327                 wlc_compute_cck_plcp(rspec, length, plcp);
5328         }
5329         return;
5330 }
5331
5332 /* Rate: 802.11 rate code, length: PSDU length in octets */
5333 static void wlc_compute_mimo_plcp(ratespec_t rspec, uint length, u8 *plcp)
5334 {
5335         u8 mcs = (u8) (rspec & RSPEC_RATE_MASK);
5336         ASSERT(IS_MCS(rspec));
5337         plcp[0] = mcs;
5338         if (RSPEC_IS40MHZ(rspec) || (mcs == 32))
5339                 plcp[0] |= MIMO_PLCP_40MHZ;
5340         WLC_SET_MIMO_PLCP_LEN(plcp, length);
5341         plcp[3] = RSPEC_MIMOPLCP3(rspec);       /* rspec already holds this byte */
5342         plcp[3] |= 0x7;         /* set smoothing, not sounding ppdu & reserved */
5343         plcp[4] = 0;            /* number of extension spatial streams bit 0 & 1 */
5344         plcp[5] = 0;
5345 }
5346
5347 /* Rate: 802.11 rate code, length: PSDU length in octets */
5348 static void BCMFASTPATH
5349 wlc_compute_ofdm_plcp(ratespec_t rspec, u32 length, u8 *plcp)
5350 {
5351         u8 rate_signal;
5352         u32 tmp = 0;
5353         int rate = RSPEC2RATE(rspec);
5354
5355         ASSERT(IS_OFDM(rspec));
5356
5357         /* encode rate per 802.11a-1999 sec 17.3.4.1, with lsb transmitted first */
5358         rate_signal = rate_info[rate] & RATE_MASK;
5359         ASSERT(rate_signal != 0);
5360
5361         memset(plcp, 0, D11_PHY_HDR_LEN);
5362         D11A_PHY_HDR_SRATE((ofdm_phy_hdr_t *) plcp, rate_signal);
5363
5364         tmp = (length & 0xfff) << 5;
5365         plcp[2] |= (tmp >> 16) & 0xff;
5366         plcp[1] |= (tmp >> 8) & 0xff;
5367         plcp[0] |= tmp & 0xff;
5368
5369         return;
5370 }
5371
5372 /*
5373  * Compute PLCP, but only requires actual rate and length of pkt.
5374  * Rate is given in the driver standard multiple of 500 kbps.
5375  * le is set for 11 Mbps rate if necessary.
5376  * Broken out for PRQ.
5377  */
5378
5379 static void wlc_cck_plcp_set(int rate_500, uint length, u8 *plcp)
5380 {
5381         u16 usec = 0;
5382         u8 le = 0;
5383
5384         switch (rate_500) {
5385         case WLC_RATE_1M:
5386                 usec = length << 3;
5387                 break;
5388         case WLC_RATE_2M:
5389                 usec = length << 2;
5390                 break;
5391         case WLC_RATE_5M5:
5392                 usec = (length << 4) / 11;
5393                 if ((length << 4) - (usec * 11) > 0)
5394                         usec++;
5395                 break;
5396         case WLC_RATE_11M:
5397                 usec = (length << 3) / 11;
5398                 if ((length << 3) - (usec * 11) > 0) {
5399                         usec++;
5400                         if ((usec * 11) - (length << 3) >= 8)
5401                                 le = D11B_PLCP_SIGNAL_LE;
5402                 }
5403                 break;
5404
5405         default:
5406                 WL_ERROR("wlc_cck_plcp_set: unsupported rate %d\n", rate_500);
5407                 rate_500 = WLC_RATE_1M;
5408                 usec = length << 3;
5409                 break;
5410         }
5411         /* PLCP signal byte */
5412         plcp[0] = rate_500 * 5; /* r (500kbps) * 5 == r (100kbps) */
5413         /* PLCP service byte */
5414         plcp[1] = (u8) (le | D11B_PLCP_SIGNAL_LOCKED);
5415         /* PLCP length u16, little endian */
5416         plcp[2] = usec & 0xff;
5417         plcp[3] = (usec >> 8) & 0xff;
5418         /* PLCP CRC16 */
5419         plcp[4] = 0;
5420         plcp[5] = 0;
5421 }
5422
5423 /* Rate: 802.11 rate code, length: PSDU length in octets */
5424 static void wlc_compute_cck_plcp(ratespec_t rspec, uint length, u8 *plcp)
5425 {
5426         int rate = RSPEC2RATE(rspec);
5427
5428         ASSERT(IS_CCK(rspec));
5429
5430         wlc_cck_plcp_set(rate, length, plcp);
5431 }
5432
5433 /* wlc_compute_frame_dur()
5434  *
5435  * Calculate the 802.11 MAC header DUR field for MPDU
5436  * DUR for a single frame = 1 SIFS + 1 ACK
5437  * DUR for a frame with following frags = 3 SIFS + 2 ACK + next frag time
5438  *
5439  * rate                 MPDU rate in unit of 500kbps
5440  * next_frag_len        next MPDU length in bytes
5441  * preamble_type        use short/GF or long/MM PLCP header
5442  */
5443 static u16 BCMFASTPATH
5444 wlc_compute_frame_dur(struct wlc_info *wlc, ratespec_t rate, u8 preamble_type,
5445                       uint next_frag_len)
5446 {
5447         u16 dur, sifs;
5448
5449         sifs = SIFS(wlc->band);
5450
5451         dur = sifs;
5452         dur += (u16) wlc_calc_ack_time(wlc, rate, preamble_type);
5453
5454         if (next_frag_len) {
5455                 /* Double the current DUR to get 2 SIFS + 2 ACKs */
5456                 dur *= 2;
5457                 /* add another SIFS and the frag time */
5458                 dur += sifs;
5459                 dur +=
5460                     (u16) wlc_calc_frame_time(wlc, rate, preamble_type,
5461                                                  next_frag_len);
5462         }
5463         return dur;
5464 }
5465
5466 /* wlc_compute_rtscts_dur()
5467  *
5468  * Calculate the 802.11 MAC header DUR field for an RTS or CTS frame
5469  * DUR for normal RTS/CTS w/ frame = 3 SIFS + 1 CTS + next frame time + 1 ACK
5470  * DUR for CTS-TO-SELF w/ frame    = 2 SIFS         + next frame time + 1 ACK
5471  *
5472  * cts                  cts-to-self or rts/cts
5473  * rts_rate             rts or cts rate in unit of 500kbps
5474  * rate                 next MPDU rate in unit of 500kbps
5475  * frame_len            next MPDU frame length in bytes
5476  */
5477 u16 BCMFASTPATH
5478 wlc_compute_rtscts_dur(struct wlc_info *wlc, bool cts_only, ratespec_t rts_rate,
5479                        ratespec_t frame_rate, u8 rts_preamble_type,
5480                        u8 frame_preamble_type, uint frame_len, bool ba)
5481 {
5482         u16 dur, sifs;
5483
5484         sifs = SIFS(wlc->band);
5485
5486         if (!cts_only) {        /* RTS/CTS */
5487                 dur = 3 * sifs;
5488                 dur +=
5489                     (u16) wlc_calc_cts_time(wlc, rts_rate,
5490                                                rts_preamble_type);
5491         } else {                /* CTS-TO-SELF */
5492                 dur = 2 * sifs;
5493         }
5494
5495         dur +=
5496             (u16) wlc_calc_frame_time(wlc, frame_rate, frame_preamble_type,
5497                                          frame_len);
5498         if (ba)
5499                 dur +=
5500                     (u16) wlc_calc_ba_time(wlc, frame_rate,
5501                                               WLC_SHORT_PREAMBLE);
5502         else
5503                 dur +=
5504                     (u16) wlc_calc_ack_time(wlc, frame_rate,
5505                                                frame_preamble_type);
5506         return dur;
5507 }
5508
5509 static bool wlc_phy_rspec_check(struct wlc_info *wlc, u16 bw, ratespec_t rspec)
5510 {
5511         if (IS_MCS(rspec)) {
5512                 uint mcs = rspec & RSPEC_RATE_MASK;
5513
5514                 if (mcs < 8) {
5515                         ASSERT(RSPEC_STF(rspec) < PHY_TXC1_MODE_SDM);
5516                 } else if ((mcs >= 8) && (mcs <= 23)) {
5517                         ASSERT(RSPEC_STF(rspec) == PHY_TXC1_MODE_SDM);
5518                 } else if (mcs == 32) {
5519                         ASSERT(RSPEC_STF(rspec) < PHY_TXC1_MODE_SDM);
5520                         ASSERT(bw == PHY_TXC1_BW_40MHZ_DUP);
5521                 }
5522         } else if (IS_OFDM(rspec)) {
5523                 ASSERT(RSPEC_STF(rspec) < PHY_TXC1_MODE_STBC);
5524         } else {
5525                 ASSERT(IS_CCK(rspec));
5526
5527                 ASSERT((bw == PHY_TXC1_BW_20MHZ)
5528                        || (bw == PHY_TXC1_BW_20MHZ_UP));
5529                 ASSERT(RSPEC_STF(rspec) == PHY_TXC1_MODE_SISO);
5530         }
5531
5532         return true;
5533 }
5534
5535 u16 BCMFASTPATH wlc_phytxctl1_calc(struct wlc_info *wlc, ratespec_t rspec)
5536 {
5537         u16 phyctl1 = 0;
5538         u16 bw;
5539
5540         if (WLCISLCNPHY(wlc->band)) {
5541                 bw = PHY_TXC1_BW_20MHZ;
5542         } else {
5543                 bw = RSPEC_GET_BW(rspec);
5544                 /* 10Mhz is not supported yet */
5545                 if (bw < PHY_TXC1_BW_20MHZ) {
5546                         WL_ERROR("wlc_phytxctl1_calc: bw %d is not supported yet, set to 20L\n",
5547                                  bw);
5548                         bw = PHY_TXC1_BW_20MHZ;
5549                 }
5550
5551                 wlc_phy_rspec_check(wlc, bw, rspec);
5552         }
5553
5554         if (IS_MCS(rspec)) {
5555                 uint mcs = rspec & RSPEC_RATE_MASK;
5556
5557                 /* bw, stf, coding-type is part of RSPEC_PHYTXBYTE2 returns */
5558                 phyctl1 = RSPEC_PHYTXBYTE2(rspec);
5559                 /* set the upper byte of phyctl1 */
5560                 phyctl1 |= (mcs_table[mcs].tx_phy_ctl3 << 8);
5561         } else if (IS_CCK(rspec) && !WLCISLCNPHY(wlc->band)
5562                    && !WLCISSSLPNPHY(wlc->band)) {
5563                 /* In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate */
5564                 /* Eventually MIMOPHY would also be converted to this format */
5565                 /* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps */
5566                 phyctl1 = (bw | (RSPEC_STF(rspec) << PHY_TXC1_MODE_SHIFT));
5567         } else {                /* legacy OFDM/CCK */
5568                 s16 phycfg;
5569                 /* get the phyctl byte from rate phycfg table */
5570                 phycfg = wlc_rate_legacy_phyctl(RSPEC2RATE(rspec));
5571                 if (phycfg == -1) {
5572                         WL_ERROR("wlc_phytxctl1_calc: wrong legacy OFDM/CCK rate\n");
5573                         ASSERT(0);
5574                         phycfg = 0;
5575                 }
5576                 /* set the upper byte of phyctl1 */
5577                 phyctl1 =
5578                     (bw | (phycfg << 8) |
5579                      (RSPEC_STF(rspec) << PHY_TXC1_MODE_SHIFT));
5580         }
5581
5582 #ifdef BCMDBG
5583         /* phy clock must support 40Mhz if tx descriptor uses it */
5584         if ((phyctl1 & PHY_TXC1_BW_MASK) >= PHY_TXC1_BW_40MHZ) {
5585                 ASSERT(CHSPEC_WLC_BW(wlc->chanspec) == WLC_40_MHZ);
5586                 ASSERT(wlc->chanspec == wlc_phy_chanspec_get(wlc->band->pi));
5587         }
5588 #endif                          /* BCMDBG */
5589         return phyctl1;
5590 }
5591
5592 ratespec_t BCMFASTPATH
5593 wlc_rspec_to_rts_rspec(struct wlc_info *wlc, ratespec_t rspec, bool use_rspec,
5594                        u16 mimo_ctlchbw)
5595 {
5596         ratespec_t rts_rspec = 0;
5597
5598         if (use_rspec) {
5599                 /* use frame rate as rts rate */
5600                 rts_rspec = rspec;
5601
5602         } else if (wlc->band->gmode && wlc->protection->_g && !IS_CCK(rspec)) {
5603                 /* Use 11Mbps as the g protection RTS target rate and fallback.
5604                  * Use the WLC_BASIC_RATE() lookup to find the best basic rate under the
5605                  * target in case 11 Mbps is not Basic.
5606                  * 6 and 9 Mbps are not usually selected by rate selection, but even
5607                  * if the OFDM rate we are protecting is 6 or 9 Mbps, 11 is more robust.
5608                  */
5609                 rts_rspec = WLC_BASIC_RATE(wlc, WLC_RATE_11M);
5610         } else {
5611                 /* calculate RTS rate and fallback rate based on the frame rate
5612                  * RTS must be sent at a basic rate since it is a
5613                  * control frame, sec 9.6 of 802.11 spec
5614                  */
5615                 rts_rspec = WLC_BASIC_RATE(wlc, rspec);
5616         }
5617
5618         if (WLC_PHY_11N_CAP(wlc->band)) {
5619                 /* set rts txbw to correct side band */
5620                 rts_rspec &= ~RSPEC_BW_MASK;
5621
5622                 /* if rspec/rspec_fallback is 40MHz, then send RTS on both 20MHz channel
5623                  * (DUP), otherwise send RTS on control channel
5624                  */
5625                 if (RSPEC_IS40MHZ(rspec) && !IS_CCK(rts_rspec))
5626                         rts_rspec |= (PHY_TXC1_BW_40MHZ_DUP << RSPEC_BW_SHIFT);
5627                 else
5628                         rts_rspec |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
5629
5630                 /* pick siso/cdd as default for ofdm */
5631                 if (IS_OFDM(rts_rspec)) {
5632                         rts_rspec &= ~RSPEC_STF_MASK;
5633                         rts_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
5634                 }
5635         }
5636         return rts_rspec;
5637 }
5638
5639 /*
5640  * Add d11txh_t, cck_phy_hdr_t.
5641  *
5642  * 'p' data must start with 802.11 MAC header
5643  * 'p' must allow enough bytes of local headers to be "pushed" onto the packet
5644  *
5645  * headroom == D11_PHY_HDR_LEN + D11_TXH_LEN (D11_TXH_LEN is now 104 bytes)
5646  *
5647  */
5648 static u16 BCMFASTPATH
5649 wlc_d11hdrs_mac80211(struct wlc_info *wlc, struct ieee80211_hw *hw,
5650                      struct sk_buff *p, struct scb *scb, uint frag,
5651                      uint nfrags, uint queue, uint next_frag_len,
5652                      wsec_key_t *key, ratespec_t rspec_override)
5653 {
5654         struct dot11_header *h;
5655         d11txh_t *txh;
5656         u8 *plcp, plcp_fallback[D11_PHY_HDR_LEN];
5657         struct osl_info *osh;
5658         int len, phylen, rts_phylen;
5659         u16 fc, type, frameid, mch, phyctl, xfts, mainrates;
5660         u16 seq = 0, mcl = 0, status = 0;
5661         ratespec_t rspec[2] = { WLC_RATE_1M, WLC_RATE_1M }, rts_rspec[2] = {
5662         WLC_RATE_1M, WLC_RATE_1M};
5663         bool use_rts = false;
5664         bool use_cts = false;
5665         bool use_rifs = false;
5666         bool short_preamble[2] = { false, false };
5667         u8 preamble_type[2] = { WLC_LONG_PREAMBLE, WLC_LONG_PREAMBLE };
5668         u8 rts_preamble_type[2] = { WLC_LONG_PREAMBLE, WLC_LONG_PREAMBLE };
5669         u8 *rts_plcp, rts_plcp_fallback[D11_PHY_HDR_LEN];
5670         struct dot11_rts_frame *rts = NULL;
5671         bool qos;
5672         uint ac;
5673         u32 rate_val[2];
5674         bool hwtkmic = false;
5675         u16 mimo_ctlchbw = PHY_TXC1_BW_20MHZ;
5676 #ifdef WLANTSEL
5677 #define ANTCFG_NONE 0xFF
5678         u8 antcfg = ANTCFG_NONE;
5679         u8 fbantcfg = ANTCFG_NONE;
5680 #endif
5681         uint phyctl1_stf = 0;
5682         u16 durid = 0;
5683         struct ieee80211_tx_rate *txrate[2];
5684         int k;
5685         struct ieee80211_tx_info *tx_info;
5686         bool is_mcs[2];
5687         u16 mimo_txbw;
5688         u8 mimo_preamble_type;
5689
5690         frameid = 0;
5691
5692         ASSERT(queue < NFIFO);
5693
5694         osh = wlc->osh;
5695
5696         /* locate 802.11 MAC header */
5697         h = (struct dot11_header *)(p->data);
5698         fc = ltoh16(h->fc);
5699         type = FC_TYPE(fc);
5700
5701         qos = (type == FC_TYPE_DATA && FC_SUBTYPE_ANY_QOS(FC_SUBTYPE(fc)));
5702
5703         /* compute length of frame in bytes for use in PLCP computations */
5704         len = pkttotlen(osh, p);
5705         phylen = len + DOT11_FCS_LEN;
5706
5707         /* If WEP enabled, add room in phylen for the additional bytes of
5708          * ICV which MAC generates.  We do NOT add the additional bytes to
5709          * the packet itself, thus phylen = packet length + ICV_LEN + FCS_LEN
5710          * in this case
5711          */
5712         if (key) {
5713                 phylen += key->icv_len;
5714         }
5715
5716         /* Get tx_info */
5717         tx_info = IEEE80211_SKB_CB(p);
5718         ASSERT(tx_info);
5719
5720         /* add PLCP */
5721         plcp = skb_push(p, D11_PHY_HDR_LEN);
5722
5723         /* add Broadcom tx descriptor header */
5724         txh = (d11txh_t *) skb_push(p, D11_TXH_LEN);
5725         memset((char *)txh, 0, D11_TXH_LEN);
5726
5727         /* setup frameid */
5728         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
5729                 /* non-AP STA should never use BCMC queue */
5730                 ASSERT(queue != TX_BCMC_FIFO);
5731                 if (queue == TX_BCMC_FIFO) {
5732                         WL_ERROR("wl%d: %s: ASSERT queue == TX_BCMC!\n",
5733                                  WLCWLUNIT(wlc), __func__);
5734                         frameid = bcmc_fid_generate(wlc, NULL, txh);
5735                 } else {
5736                         /* Increment the counter for first fragment */
5737                         if (tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) {
5738                                 SCB_SEQNUM(scb, p->priority)++;
5739                         }
5740
5741                         /* extract fragment number from frame first */
5742                         seq = ltoh16(seq) & FRAGNUM_MASK;
5743                         seq |= (SCB_SEQNUM(scb, p->priority) << SEQNUM_SHIFT);
5744                         h->seq = htol16(seq);
5745
5746                         frameid = ((seq << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
5747                             (queue & TXFID_QUEUE_MASK);
5748                 }
5749         }
5750         frameid |= queue & TXFID_QUEUE_MASK;
5751
5752         /* set the ignpmq bit for all pkts tx'd in PS mode and for beacons */
5753         if (SCB_PS(scb) || ((fc & FC_KIND_MASK) == FC_BEACON))
5754                 mcl |= TXC_IGNOREPMQ;
5755
5756         ASSERT(hw->max_rates <= IEEE80211_TX_MAX_RATES);
5757         ASSERT(hw->max_rates == 2);
5758
5759         txrate[0] = tx_info->control.rates;
5760         txrate[1] = txrate[0] + 1;
5761
5762         ASSERT(txrate[0]->idx >= 0);
5763         /* if rate control algorithm didn't give us a fallback rate, use the primary rate */
5764         if (txrate[1]->idx < 0) {
5765                 txrate[1] = txrate[0];
5766         }
5767
5768         for (k = 0; k < hw->max_rates; k++) {
5769                 is_mcs[k] =
5770                     txrate[k]->flags & IEEE80211_TX_RC_MCS ? true : false;
5771                 if (!is_mcs[k]) {
5772                         ASSERT(!(tx_info->flags & IEEE80211_TX_CTL_AMPDU));
5773                         if ((txrate[k]->idx >= 0)
5774                             && (txrate[k]->idx <
5775                                 hw->wiphy->bands[tx_info->band]->n_bitrates)) {
5776                                 rate_val[k] =
5777                                     hw->wiphy->bands[tx_info->band]->
5778                                     bitrates[txrate[k]->idx].hw_value;
5779                                 short_preamble[k] =
5780                                     txrate[k]->
5781                                     flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE ?
5782                                     true : false;
5783                         } else {
5784                                 ASSERT((txrate[k]->idx >= 0) &&
5785                                        (txrate[k]->idx <
5786                                         hw->wiphy->bands[tx_info->band]->
5787                                         n_bitrates));
5788                                 rate_val[k] = WLC_RATE_1M;
5789                         }
5790                 } else {
5791                         rate_val[k] = txrate[k]->idx;
5792                 }
5793                 /* Currently only support same setting for primay and fallback rates.
5794                  * Unify flags for each rate into a single value for the frame
5795                  */
5796                 use_rts |=
5797                     txrate[k]->
5798                     flags & IEEE80211_TX_RC_USE_RTS_CTS ? true : false;
5799                 use_cts |=
5800                     txrate[k]->
5801                     flags & IEEE80211_TX_RC_USE_CTS_PROTECT ? true : false;
5802
5803                 if (is_mcs[k])
5804                         rate_val[k] |= NRATE_MCS_INUSE;
5805
5806                 rspec[k] = mac80211_wlc_set_nrate(wlc, wlc->band, rate_val[k]);
5807
5808                 /* (1) RATE: determine and validate primary rate and fallback rates */
5809                 if (!RSPEC_ACTIVE(rspec[k])) {
5810                         ASSERT(RSPEC_ACTIVE(rspec[k]));
5811                         rspec[k] = WLC_RATE_1M;
5812                 } else {
5813                         if (WLANTSEL_ENAB(wlc) &&
5814                             !is_multicast_ether_addr(h->a1.octet)) {
5815                                 /* set tx antenna config */
5816                                 wlc_antsel_antcfg_get(wlc->asi, false, false, 0,
5817                                                       0, &antcfg, &fbantcfg);
5818                         }
5819                 }
5820         }
5821
5822         phyctl1_stf = wlc->stf->ss_opmode;
5823
5824         if (N_ENAB(wlc->pub)) {
5825                 for (k = 0; k < hw->max_rates; k++) {
5826                         /* apply siso/cdd to single stream mcs's or ofdm if rspec is auto selected */
5827                         if (((IS_MCS(rspec[k]) &&
5828                               IS_SINGLE_STREAM(rspec[k] & RSPEC_RATE_MASK)) ||
5829                              IS_OFDM(rspec[k]))
5830                             && ((rspec[k] & RSPEC_OVERRIDE_MCS_ONLY)
5831                                 || !(rspec[k] & RSPEC_OVERRIDE))) {
5832                                 rspec[k] &= ~(RSPEC_STF_MASK | RSPEC_STC_MASK);
5833
5834                                 /* For SISO MCS use STBC if possible */
5835                                 if (IS_MCS(rspec[k])
5836                                     && WLC_STF_SS_STBC_TX(wlc, scb)) {
5837                                         u8 stc;
5838
5839                                         ASSERT(WLC_STBC_CAP_PHY(wlc));
5840                                         stc = 1;        /* Nss for single stream is always 1 */
5841                                         rspec[k] |=
5842                                             (PHY_TXC1_MODE_STBC <<
5843                                              RSPEC_STF_SHIFT) | (stc <<
5844                                                                  RSPEC_STC_SHIFT);
5845                                 } else
5846                                         rspec[k] |=
5847                                             (phyctl1_stf << RSPEC_STF_SHIFT);
5848                         }
5849
5850                         /* Is the phy configured to use 40MHZ frames? If so then pick the desired txbw */
5851                         if (CHSPEC_WLC_BW(wlc->chanspec) == WLC_40_MHZ) {
5852                                 /* default txbw is 20in40 SB */
5853                                 mimo_ctlchbw = mimo_txbw =
5854                                     CHSPEC_SB_UPPER(WLC_BAND_PI_RADIO_CHANSPEC)
5855                                     ? PHY_TXC1_BW_20MHZ_UP : PHY_TXC1_BW_20MHZ;
5856
5857                                 if (IS_MCS(rspec[k])) {
5858                                         /* mcs 32 must be 40b/w DUP */
5859                                         if ((rspec[k] & RSPEC_RATE_MASK) == 32) {
5860                                                 mimo_txbw =
5861                                                     PHY_TXC1_BW_40MHZ_DUP;
5862                                                 /* use override */
5863                                         } else if (wlc->mimo_40txbw != AUTO)
5864                                                 mimo_txbw = wlc->mimo_40txbw;
5865                                         /* else check if dst is using 40 Mhz */
5866                                         else if (scb->flags & SCB_IS40)
5867                                                 mimo_txbw = PHY_TXC1_BW_40MHZ;
5868                                 } else if (IS_OFDM(rspec[k])) {
5869                                         if (wlc->ofdm_40txbw != AUTO)
5870                                                 mimo_txbw = wlc->ofdm_40txbw;
5871                                 } else {
5872                                         ASSERT(IS_CCK(rspec[k]));
5873                                         if (wlc->cck_40txbw != AUTO)
5874                                                 mimo_txbw = wlc->cck_40txbw;
5875                                 }
5876                         } else {
5877                                 /* mcs32 is 40 b/w only.
5878                                  * This is possible for probe packets on a STA during SCAN
5879                                  */
5880                                 if ((rspec[k] & RSPEC_RATE_MASK) == 32) {
5881                                         /* mcs 0 */
5882                                         rspec[k] = RSPEC_MIMORATE;
5883                                 }
5884                                 mimo_txbw = PHY_TXC1_BW_20MHZ;
5885                         }
5886
5887                         /* Set channel width */
5888                         rspec[k] &= ~RSPEC_BW_MASK;
5889                         if ((k == 0) || ((k > 0) && IS_MCS(rspec[k])))
5890                                 rspec[k] |= (mimo_txbw << RSPEC_BW_SHIFT);
5891                         else
5892                                 rspec[k] |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
5893
5894                         /* Set Short GI */
5895 #ifdef NOSGIYET
5896                         if (IS_MCS(rspec[k])
5897                             && (txrate[k]->flags & IEEE80211_TX_RC_SHORT_GI))
5898                                 rspec[k] |= RSPEC_SHORT_GI;
5899                         else if (!(txrate[k]->flags & IEEE80211_TX_RC_SHORT_GI))
5900                                 rspec[k] &= ~RSPEC_SHORT_GI;
5901 #else
5902                         rspec[k] &= ~RSPEC_SHORT_GI;
5903 #endif
5904
5905                         mimo_preamble_type = WLC_MM_PREAMBLE;
5906                         if (txrate[k]->flags & IEEE80211_TX_RC_GREEN_FIELD)
5907                                 mimo_preamble_type = WLC_GF_PREAMBLE;
5908
5909                         if ((txrate[k]->flags & IEEE80211_TX_RC_MCS)
5910                             && (!IS_MCS(rspec[k]))) {
5911                                 WL_ERROR("wl%d: %s: IEEE80211_TX_RC_MCS != IS_MCS(rspec)\n",
5912                                          WLCWLUNIT(wlc), __func__);
5913                                 ASSERT(0 && "Rate mismatch");
5914                         }
5915
5916                         if (IS_MCS(rspec[k])) {
5917                                 preamble_type[k] = mimo_preamble_type;
5918
5919                                 /* if SGI is selected, then forced mm for single stream */
5920                                 if ((rspec[k] & RSPEC_SHORT_GI)
5921                                     && IS_SINGLE_STREAM(rspec[k] &
5922                                                         RSPEC_RATE_MASK)) {
5923                                         preamble_type[k] = WLC_MM_PREAMBLE;
5924                                 }
5925                         }
5926
5927                         /* mimo bw field MUST now be valid in the rspec (it affects duration calculations) */
5928                         ASSERT(VALID_RATE_DBG(wlc, rspec[0]));
5929
5930                         /* should be better conditionalized */
5931                         if (!IS_MCS(rspec[0])
5932                             && (tx_info->control.rates[0].
5933                                 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
5934                                 preamble_type[k] = WLC_SHORT_PREAMBLE;
5935
5936                         ASSERT(!IS_MCS(rspec[0])
5937                                || WLC_IS_MIMO_PREAMBLE(preamble_type[k]));
5938                 }
5939         } else {
5940                 for (k = 0; k < hw->max_rates; k++) {
5941                         /* Set ctrlchbw as 20Mhz */
5942                         ASSERT(!IS_MCS(rspec[k]));
5943                         rspec[k] &= ~RSPEC_BW_MASK;
5944                         rspec[k] |= (PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT);
5945
5946                         /* for nphy, stf of ofdm frames must follow policies */
5947                         if (WLCISNPHY(wlc->band) && IS_OFDM(rspec[k])) {
5948                                 rspec[k] &= ~RSPEC_STF_MASK;
5949                                 rspec[k] |= phyctl1_stf << RSPEC_STF_SHIFT;
5950                         }
5951                 }
5952         }
5953
5954         /* Reset these for use with AMPDU's */
5955         txrate[0]->count = 0;
5956         txrate[1]->count = 0;
5957
5958         /* (3) PLCP: determine PLCP header and MAC duration, fill d11txh_t */
5959         wlc_compute_plcp(wlc, rspec[0], phylen, plcp);
5960         wlc_compute_plcp(wlc, rspec[1], phylen, plcp_fallback);
5961         bcopy(plcp_fallback, (char *)&txh->FragPLCPFallback,
5962               sizeof(txh->FragPLCPFallback));
5963
5964         /* Length field now put in CCK FBR CRC field */
5965         if (IS_CCK(rspec[1])) {
5966                 txh->FragPLCPFallback[4] = phylen & 0xff;
5967                 txh->FragPLCPFallback[5] = (phylen & 0xff00) >> 8;
5968         }
5969
5970         /* MIMO-RATE: need validation ?? */
5971         mainrates =
5972             IS_OFDM(rspec[0]) ? D11A_PHY_HDR_GRATE((ofdm_phy_hdr_t *) plcp) :
5973             plcp[0];
5974
5975         /* DUR field for main rate */
5976         if ((fc != FC_PS_POLL) &&
5977             !is_multicast_ether_addr(h->a1.octet) && !use_rifs) {
5978                 durid =
5979                     wlc_compute_frame_dur(wlc, rspec[0], preamble_type[0],
5980                                           next_frag_len);
5981                 h->durid = htol16(durid);
5982         } else if (use_rifs) {
5983                 /* NAV protect to end of next max packet size */
5984                 durid =
5985                     (u16) wlc_calc_frame_time(wlc, rspec[0],
5986                                                  preamble_type[0],
5987                                                  DOT11_MAX_FRAG_LEN);
5988                 durid += RIFS_11N_TIME;
5989                 h->durid = htol16(durid);
5990         }
5991
5992         /* DUR field for fallback rate */
5993         if (fc == FC_PS_POLL)
5994                 txh->FragDurFallback = h->durid;
5995         else if (is_multicast_ether_addr(h->a1.octet) || use_rifs)
5996                 txh->FragDurFallback = 0;
5997         else {
5998                 durid = wlc_compute_frame_dur(wlc, rspec[1],
5999                                               preamble_type[1], next_frag_len);
6000                 txh->FragDurFallback = htol16(durid);
6001         }
6002
6003         /* (4) MAC-HDR: MacTxControlLow */
6004         if (frag == 0)
6005                 mcl |= TXC_STARTMSDU;
6006
6007         if (!is_multicast_ether_addr(h->a1.octet))
6008                 mcl |= TXC_IMMEDACK;
6009
6010         if (BAND_5G(wlc->band->bandtype))
6011                 mcl |= TXC_FREQBAND_5G;
6012
6013         if (CHSPEC_IS40(WLC_BAND_PI_RADIO_CHANSPEC))
6014                 mcl |= TXC_BW_40;
6015
6016         /* set AMIC bit if using hardware TKIP MIC */
6017         if (hwtkmic)
6018                 mcl |= TXC_AMIC;
6019
6020         txh->MacTxControlLow = htol16(mcl);
6021
6022         /* MacTxControlHigh */
6023         mch = 0;
6024
6025         /* Set fallback rate preamble type */
6026         if ((preamble_type[1] == WLC_SHORT_PREAMBLE) ||
6027             (preamble_type[1] == WLC_GF_PREAMBLE)) {
6028                 ASSERT((preamble_type[1] == WLC_GF_PREAMBLE) ||
6029                        (!IS_MCS(rspec[1])));
6030                 if (RSPEC2RATE(rspec[1]) != WLC_RATE_1M)
6031                         mch |= TXC_PREAMBLE_DATA_FB_SHORT;
6032         }
6033
6034         /* MacFrameControl */
6035         bcopy((char *)&h->fc, (char *)&txh->MacFrameControl, sizeof(u16));
6036
6037         txh->TxFesTimeNormal = htol16(0);
6038
6039         txh->TxFesTimeFallback = htol16(0);
6040
6041         /* TxFrameRA */
6042         bcopy((char *)&h->a1, (char *)&txh->TxFrameRA, ETH_ALEN);
6043
6044         /* TxFrameID */
6045         txh->TxFrameID = htol16(frameid);
6046
6047         /* TxStatus, Note the case of recreating the first frag of a suppressed frame
6048          * then we may need to reset the retry cnt's via the status reg
6049          */
6050         txh->TxStatus = htol16(status);
6051
6052         if (D11REV_GE(wlc->pub->corerev, 16)) {
6053                 /* extra fields for ucode AMPDU aggregation, the new fields are added to
6054                  * the END of previous structure so that it's compatible in driver.
6055                  * In old rev ucode, these fields should be ignored
6056                  */
6057                 txh->MaxNMpdus = htol16(0);
6058                 txh->MaxABytes_MRT = htol16(0);
6059                 txh->MaxABytes_FBR = htol16(0);
6060                 txh->MinMBytes = htol16(0);
6061         }
6062
6063         /* (5) RTS/CTS: determine RTS/CTS PLCP header and MAC duration, furnish d11txh_t */
6064         /* RTS PLCP header and RTS frame */
6065         if (use_rts || use_cts) {
6066                 if (use_rts && use_cts)
6067                         use_cts = false;
6068
6069                 for (k = 0; k < 2; k++) {
6070                         rts_rspec[k] = wlc_rspec_to_rts_rspec(wlc, rspec[k],
6071                                                               false,
6072                                                               mimo_ctlchbw);
6073                 }
6074
6075                 if (!IS_OFDM(rts_rspec[0]) &&
6076                     !((RSPEC2RATE(rts_rspec[0]) == WLC_RATE_1M) ||
6077                       (wlc->PLCPHdr_override == WLC_PLCP_LONG))) {
6078                         rts_preamble_type[0] = WLC_SHORT_PREAMBLE;
6079                         mch |= TXC_PREAMBLE_RTS_MAIN_SHORT;
6080                 }
6081
6082                 if (!IS_OFDM(rts_rspec[1]) &&
6083                     !((RSPEC2RATE(rts_rspec[1]) == WLC_RATE_1M) ||
6084                       (wlc->PLCPHdr_override == WLC_PLCP_LONG))) {
6085                         rts_preamble_type[1] = WLC_SHORT_PREAMBLE;
6086                         mch |= TXC_PREAMBLE_RTS_FB_SHORT;
6087                 }
6088
6089                 /* RTS/CTS additions to MacTxControlLow */
6090                 if (use_cts) {
6091                         txh->MacTxControlLow |= htol16(TXC_SENDCTS);
6092                 } else {
6093                         txh->MacTxControlLow |= htol16(TXC_SENDRTS);
6094                         txh->MacTxControlLow |= htol16(TXC_LONGFRAME);
6095                 }
6096
6097                 /* RTS PLCP header */
6098                 ASSERT(IS_ALIGNED((unsigned long)txh->RTSPhyHeader, sizeof(u16)));
6099                 rts_plcp = txh->RTSPhyHeader;
6100                 if (use_cts)
6101                         rts_phylen = DOT11_CTS_LEN + DOT11_FCS_LEN;
6102                 else
6103                         rts_phylen = DOT11_RTS_LEN + DOT11_FCS_LEN;
6104
6105                 wlc_compute_plcp(wlc, rts_rspec[0], rts_phylen, rts_plcp);
6106
6107                 /* fallback rate version of RTS PLCP header */
6108                 wlc_compute_plcp(wlc, rts_rspec[1], rts_phylen,
6109                                  rts_plcp_fallback);
6110                 bcopy(rts_plcp_fallback, (char *)&txh->RTSPLCPFallback,
6111                       sizeof(txh->RTSPLCPFallback));
6112
6113                 /* RTS frame fields... */
6114                 rts = (struct dot11_rts_frame *)&txh->rts_frame;
6115
6116                 durid = wlc_compute_rtscts_dur(wlc, use_cts, rts_rspec[0],
6117                                                rspec[0], rts_preamble_type[0],
6118                                                preamble_type[0], phylen, false);
6119                 rts->durid = htol16(durid);
6120                 /* fallback rate version of RTS DUR field */
6121                 durid = wlc_compute_rtscts_dur(wlc, use_cts,
6122                                                rts_rspec[1], rspec[1],
6123                                                rts_preamble_type[1],
6124                                                preamble_type[1], phylen, false);
6125                 txh->RTSDurFallback = htol16(durid);
6126
6127                 if (use_cts) {
6128                         rts->fc = htol16(FC_CTS);
6129                         bcopy((char *)&h->a2, (char *)&rts->ra, ETH_ALEN);
6130                 } else {
6131                         rts->fc = htol16((u16) FC_RTS);
6132                         bcopy((char *)&h->a1, (char *)&rts->ra,
6133                               2 * ETH_ALEN);
6134                 }
6135
6136                 /* mainrate
6137                  *    low 8 bits: main frag rate/mcs,
6138                  *    high 8 bits: rts/cts rate/mcs
6139                  */
6140                 mainrates |= (IS_OFDM(rts_rspec[0]) ?
6141                               D11A_PHY_HDR_GRATE((ofdm_phy_hdr_t *) rts_plcp) :
6142                               rts_plcp[0]) << 8;
6143         } else {
6144                 memset((char *)txh->RTSPhyHeader, 0, D11_PHY_HDR_LEN);
6145                 memset((char *)&txh->rts_frame, 0,
6146                         sizeof(struct dot11_rts_frame));
6147                 memset((char *)txh->RTSPLCPFallback, 0,
6148                       sizeof(txh->RTSPLCPFallback));
6149                 txh->RTSDurFallback = 0;
6150         }
6151
6152 #ifdef SUPPORT_40MHZ
6153         /* add null delimiter count */
6154         if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && IS_MCS(rspec)) {
6155                 txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM] =
6156                     wlc_ampdu_null_delim_cnt(wlc->ampdu, scb, rspec, phylen);
6157         }
6158 #endif
6159
6160         /* Now that RTS/RTS FB preamble types are updated, write the final value */
6161         txh->MacTxControlHigh = htol16(mch);
6162
6163         /* MainRates (both the rts and frag plcp rates have been calculated now) */
6164         txh->MainRates = htol16(mainrates);
6165
6166         /* XtraFrameTypes */
6167         xfts = FRAMETYPE(rspec[1], wlc->mimoft);
6168         xfts |= (FRAMETYPE(rts_rspec[0], wlc->mimoft) << XFTS_RTS_FT_SHIFT);
6169         xfts |= (FRAMETYPE(rts_rspec[1], wlc->mimoft) << XFTS_FBRRTS_FT_SHIFT);
6170         xfts |=
6171             CHSPEC_CHANNEL(WLC_BAND_PI_RADIO_CHANSPEC) << XFTS_CHANNEL_SHIFT;
6172         txh->XtraFrameTypes = htol16(xfts);
6173
6174         /* PhyTxControlWord */
6175         phyctl = FRAMETYPE(rspec[0], wlc->mimoft);
6176         if ((preamble_type[0] == WLC_SHORT_PREAMBLE) ||
6177             (preamble_type[0] == WLC_GF_PREAMBLE)) {
6178                 ASSERT((preamble_type[0] == WLC_GF_PREAMBLE)
6179                        || !IS_MCS(rspec[0]));
6180                 if (RSPEC2RATE(rspec[0]) != WLC_RATE_1M)
6181                         phyctl |= PHY_TXC_SHORT_HDR;
6182                 WLCNTINCR(wlc->pub->_cnt->txprshort);
6183         }
6184
6185         /* phytxant is properly bit shifted */
6186         phyctl |= wlc_stf_d11hdrs_phyctl_txant(wlc, rspec[0]);
6187         txh->PhyTxControlWord = htol16(phyctl);
6188
6189         /* PhyTxControlWord_1 */
6190         if (WLC_PHY_11N_CAP(wlc->band)) {
6191                 u16 phyctl1 = 0;
6192
6193                 phyctl1 = wlc_phytxctl1_calc(wlc, rspec[0]);
6194                 txh->PhyTxControlWord_1 = htol16(phyctl1);
6195                 phyctl1 = wlc_phytxctl1_calc(wlc, rspec[1]);
6196                 txh->PhyTxControlWord_1_Fbr = htol16(phyctl1);
6197
6198                 if (use_rts || use_cts) {
6199                         phyctl1 = wlc_phytxctl1_calc(wlc, rts_rspec[0]);
6200                         txh->PhyTxControlWord_1_Rts = htol16(phyctl1);
6201                         phyctl1 = wlc_phytxctl1_calc(wlc, rts_rspec[1]);
6202                         txh->PhyTxControlWord_1_FbrRts = htol16(phyctl1);
6203                 }
6204
6205                 /*
6206                  * For mcs frames, if mixedmode(overloaded with long preamble) is going to be set,
6207                  * fill in non-zero MModeLen and/or MModeFbrLen
6208                  *  it will be unnecessary if they are separated
6209                  */
6210                 if (IS_MCS(rspec[0]) && (preamble_type[0] == WLC_MM_PREAMBLE)) {
6211                         u16 mmodelen =
6212                             wlc_calc_lsig_len(wlc, rspec[0], phylen);
6213                         txh->MModeLen = htol16(mmodelen);
6214                 }
6215
6216                 if (IS_MCS(rspec[1]) && (preamble_type[1] == WLC_MM_PREAMBLE)) {
6217                         u16 mmodefbrlen =
6218                             wlc_calc_lsig_len(wlc, rspec[1], phylen);
6219                         txh->MModeFbrLen = htol16(mmodefbrlen);
6220                 }
6221         }
6222
6223         if (IS_MCS(rspec[0]))
6224                 ASSERT(IS_MCS(rspec[1]));
6225
6226         ASSERT(!IS_MCS(rspec[0]) ||
6227                ((preamble_type[0] == WLC_MM_PREAMBLE) == (txh->MModeLen != 0)));
6228         ASSERT(!IS_MCS(rspec[1]) ||
6229                ((preamble_type[1] == WLC_MM_PREAMBLE) ==
6230                 (txh->MModeFbrLen != 0)));
6231
6232         ac = wme_fifo2ac[queue];
6233         if (SCB_WME(scb) && qos && wlc->edcf_txop[ac]) {
6234                 uint frag_dur, dur, dur_fallback;
6235
6236                 ASSERT(!is_multicast_ether_addr(h->a1.octet));
6237
6238                 /* WME: Update TXOP threshold */
6239                 if ((!(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) && (frag == 0)) {
6240                         frag_dur =
6241                             wlc_calc_frame_time(wlc, rspec[0], preamble_type[0],
6242                                                 phylen);
6243
6244                         if (rts) {
6245                                 /* 1 RTS or CTS-to-self frame */
6246                                 dur =
6247                                     wlc_calc_cts_time(wlc, rts_rspec[0],
6248                                                       rts_preamble_type[0]);
6249                                 dur_fallback =
6250                                     wlc_calc_cts_time(wlc, rts_rspec[1],
6251                                                       rts_preamble_type[1]);
6252                                 /* (SIFS + CTS) + SIFS + frame + SIFS + ACK */
6253                                 dur += ltoh16(rts->durid);
6254                                 dur_fallback += ltoh16(txh->RTSDurFallback);
6255                         } else if (use_rifs) {
6256                                 dur = frag_dur;
6257                                 dur_fallback = 0;
6258                         } else {
6259                                 /* frame + SIFS + ACK */
6260                                 dur = frag_dur;
6261                                 dur +=
6262                                     wlc_compute_frame_dur(wlc, rspec[0],
6263                                                           preamble_type[0], 0);
6264
6265                                 dur_fallback =
6266                                     wlc_calc_frame_time(wlc, rspec[1],
6267                                                         preamble_type[1],
6268                                                         phylen);
6269                                 dur_fallback +=
6270                                     wlc_compute_frame_dur(wlc, rspec[1],
6271                                                           preamble_type[1], 0);
6272                         }
6273                         /* NEED to set TxFesTimeNormal (hard) */
6274                         txh->TxFesTimeNormal = htol16((u16) dur);
6275                         /* NEED to set fallback rate version of TxFesTimeNormal (hard) */
6276                         txh->TxFesTimeFallback = htol16((u16) dur_fallback);
6277
6278                         /* update txop byte threshold (txop minus intraframe overhead) */
6279                         if (wlc->edcf_txop[ac] >= (dur - frag_dur)) {
6280                                 {
6281                                         uint newfragthresh;
6282
6283                                         newfragthresh =
6284                                             wlc_calc_frame_len(wlc, rspec[0],
6285                                                                preamble_type[0],
6286                                                                (wlc->
6287                                                                 edcf_txop[ac] -
6288                                                                 (dur -
6289                                                                  frag_dur)));
6290                                         /* range bound the fragthreshold */
6291                                         if (newfragthresh < DOT11_MIN_FRAG_LEN)
6292                                                 newfragthresh =
6293                                                     DOT11_MIN_FRAG_LEN;
6294                                         else if (newfragthresh >
6295                                                  wlc->usr_fragthresh)
6296                                                 newfragthresh =
6297                                                     wlc->usr_fragthresh;
6298                                         /* update the fragthresh and do txc update */
6299                                         if (wlc->fragthresh[queue] !=
6300                                             (u16) newfragthresh) {
6301                                                 wlc->fragthresh[queue] =
6302                                                     (u16) newfragthresh;
6303                                         }
6304                                 }
6305                         } else
6306                                 WL_ERROR("wl%d: %s txop invalid for rate %d\n",
6307                                          wlc->pub->unit, fifo_names[queue],
6308                                          RSPEC2RATE(rspec[0]));
6309
6310                         if (dur > wlc->edcf_txop[ac])
6311                                 WL_ERROR("wl%d: %s: %s txop exceeded phylen %d/%d dur %d/%d\n",
6312                                          wlc->pub->unit, __func__,
6313                                          fifo_names[queue],
6314                                          phylen, wlc->fragthresh[queue],
6315                                          dur, wlc->edcf_txop[ac]);
6316                 }
6317         }
6318
6319         return 0;
6320 }
6321
6322 void wlc_tbtt(struct wlc_info *wlc, d11regs_t *regs)
6323 {
6324         wlc_bsscfg_t *cfg = wlc->cfg;
6325
6326         WLCNTINCR(wlc->pub->_cnt->tbtt);
6327
6328         if (BSSCFG_STA(cfg)) {
6329                 /* run watchdog here if the watchdog timer is not armed */
6330                 if (WLC_WATCHDOG_TBTT(wlc)) {
6331                         u32 cur, delta;
6332                         if (wlc->WDarmed) {
6333                                 wl_del_timer(wlc->wl, wlc->wdtimer);
6334                                 wlc->WDarmed = false;
6335                         }
6336
6337                         cur = OSL_SYSUPTIME();
6338                         delta = cur > wlc->WDlast ? cur - wlc->WDlast :
6339                             (u32) ~0 - wlc->WDlast + cur + 1;
6340                         if (delta >= TIMER_INTERVAL_WATCHDOG) {
6341                                 wlc_watchdog((void *)wlc);
6342                                 wlc->WDlast = cur;
6343                         }
6344
6345                         wl_add_timer(wlc->wl, wlc->wdtimer,
6346                                      wlc_watchdog_backup_bi(wlc), true);
6347                         wlc->WDarmed = true;
6348                 }
6349         }
6350
6351         if (!cfg->BSS) {
6352                 /* DirFrmQ is now valid...defer setting until end of ATIM window */
6353                 wlc->qvalid |= MCMD_DIRFRMQVAL;
6354         }
6355 }
6356
6357 /* GP timer is a freerunning 32 bit counter, decrements at 1 us rate */
6358 void wlc_hwtimer_gptimer_set(struct wlc_info *wlc, uint us)
6359 {
6360         ASSERT(wlc->pub->corerev >= 3); /* no gptimer in earlier revs */
6361         W_REG(wlc->osh, &wlc->regs->gptimer, us);
6362 }
6363
6364 void wlc_hwtimer_gptimer_abort(struct wlc_info *wlc)
6365 {
6366         ASSERT(wlc->pub->corerev >= 3);
6367         W_REG(wlc->osh, &wlc->regs->gptimer, 0);
6368 }
6369
6370 static void wlc_hwtimer_gptimer_cb(struct wlc_info *wlc)
6371 {
6372         /* when interrupt is generated, the counter is loaded with last value
6373          * written and continue to decrement. So it has to be cleaned first
6374          */
6375         W_REG(wlc->osh, &wlc->regs->gptimer, 0);
6376 }
6377
6378 /*
6379  * This fn has all the high level dpc processing from wlc_dpc.
6380  * POLICY: no macinstatus change, no bounding loop.
6381  *         All dpc bounding should be handled in BMAC dpc, like txstatus and rxint
6382  */
6383 void wlc_high_dpc(struct wlc_info *wlc, u32 macintstatus)
6384 {
6385         d11regs_t *regs = wlc->regs;
6386 #ifdef BCMDBG
6387         char flagstr[128];
6388         static const bcm_bit_desc_t int_flags[] = {
6389                 {MI_MACSSPNDD, "MACSSPNDD"},
6390                 {MI_BCNTPL, "BCNTPL"},
6391                 {MI_TBTT, "TBTT"},
6392                 {MI_BCNSUCCESS, "BCNSUCCESS"},
6393                 {MI_BCNCANCLD, "BCNCANCLD"},
6394                 {MI_ATIMWINEND, "ATIMWINEND"},
6395                 {MI_PMQ, "PMQ"},
6396                 {MI_NSPECGEN_0, "NSPECGEN_0"},
6397                 {MI_NSPECGEN_1, "NSPECGEN_1"},
6398                 {MI_MACTXERR, "MACTXERR"},
6399                 {MI_NSPECGEN_3, "NSPECGEN_3"},
6400                 {MI_PHYTXERR, "PHYTXERR"},
6401                 {MI_PME, "PME"},
6402                 {MI_GP0, "GP0"},
6403                 {MI_GP1, "GP1"},
6404                 {MI_DMAINT, "DMAINT"},
6405                 {MI_TXSTOP, "TXSTOP"},
6406                 {MI_CCA, "CCA"},
6407                 {MI_BG_NOISE, "BG_NOISE"},
6408                 {MI_DTIM_TBTT, "DTIM_TBTT"},
6409                 {MI_PRQ, "PRQ"},
6410                 {MI_PWRUP, "PWRUP"},
6411                 {MI_RFDISABLE, "RFDISABLE"},
6412                 {MI_TFS, "TFS"},
6413                 {MI_PHYCHANGED, "PHYCHANGED"},
6414                 {MI_TO, "TO"},
6415                 {0, NULL}
6416         };
6417
6418         if (macintstatus & ~(MI_TBTT | MI_TXSTOP)) {
6419                 bcm_format_flags(int_flags, macintstatus, flagstr,
6420                                  sizeof(flagstr));
6421                 WL_TRACE("wl%d: macintstatus 0x%x %s\n",
6422                          wlc->pub->unit, macintstatus, flagstr);
6423         }
6424 #endif                          /* BCMDBG */
6425
6426         if (macintstatus & MI_PRQ) {
6427                 /* Process probe request FIFO */
6428                 ASSERT(0 && "PRQ Interrupt in non-MBSS");
6429         }
6430
6431         /* TBTT indication */
6432         /* ucode only gives either TBTT or DTIM_TBTT, not both */
6433         if (macintstatus & (MI_TBTT | MI_DTIM_TBTT))
6434                 wlc_tbtt(wlc, regs);
6435
6436         if (macintstatus & MI_GP0) {
6437                 WL_ERROR("wl%d: PSM microcode watchdog fired at %d (seconds). Resetting.\n",
6438                          wlc->pub->unit, wlc->pub->now);
6439
6440                 printk_once("%s : PSM Watchdog, chipid 0x%x, chiprev 0x%x\n",
6441                                         __func__, wlc->pub->sih->chip,
6442                                         wlc->pub->sih->chiprev);
6443
6444                 WLCNTINCR(wlc->pub->_cnt->psmwds);
6445
6446                 /* big hammer */
6447                 wl_init(wlc->wl);
6448         }
6449
6450         /* gptimer timeout */
6451         if (macintstatus & MI_TO) {
6452                 wlc_hwtimer_gptimer_cb(wlc);
6453         }
6454
6455         if (macintstatus & MI_RFDISABLE) {
6456                 WL_ERROR("wl%d: MAC Detected a change on the RF Disable Input 0x%x\n",
6457                          wlc->pub->unit,
6458                          R_REG(wlc->osh, &regs->phydebug) & PDBG_RFD);
6459                 /* delay the cleanup to wl_down in IBSS case */
6460                 if ((R_REG(wlc->osh, &regs->phydebug) & PDBG_RFD)) {
6461                         int idx;
6462                         wlc_bsscfg_t *bsscfg;
6463                         FOREACH_BSS(wlc, idx, bsscfg) {
6464                                 if (!BSSCFG_STA(bsscfg) || !bsscfg->enable
6465                                     || !bsscfg->BSS)
6466                                         continue;
6467                                 WL_ERROR("wl%d: wlc_dpc: rfdisable -> wlc_bsscfg_disable()\n",
6468                                          wlc->pub->unit);
6469                         }
6470                 }
6471         }
6472
6473         /* send any enq'd tx packets. Just makes sure to jump start tx */
6474         if (!pktq_empty(&wlc->active_queue->q))
6475                 wlc_send_q(wlc, wlc->active_queue);
6476
6477         ASSERT(wlc_ps_check(wlc));
6478 }
6479
6480 static void *wlc_15420war(struct wlc_info *wlc, uint queue)
6481 {
6482         struct hnddma_pub *di;
6483         void *p;
6484
6485         ASSERT(queue < NFIFO);
6486
6487         if ((D11REV_IS(wlc->pub->corerev, 4))
6488             || (D11REV_GT(wlc->pub->corerev, 6)))
6489                 return NULL;
6490
6491         di = wlc->hw->di[queue];
6492         ASSERT(di != NULL);
6493
6494         /* get next packet, ignoring XmtStatus.Curr */
6495         p = dma_getnexttxp(di, HNDDMA_RANGE_ALL);
6496
6497         /* sw block tx dma */
6498         dma_txblock(di);
6499
6500         /* if tx ring is now empty, reset and re-init the tx dma channel */
6501         if (dma_txactive(wlc->hw->di[queue]) == 0) {
6502                 WLCNTINCR(wlc->pub->_cnt->txdmawar);
6503                 if (!dma_txreset(di))
6504                         WL_ERROR("wl%d: %s: dma_txreset[%d]: cannot stop dma\n",
6505                                  wlc->pub->unit, __func__, queue);
6506                 dma_txinit(di);
6507         }
6508         return p;
6509 }
6510
6511 static void wlc_war16165(struct wlc_info *wlc, bool tx)
6512 {
6513         if (tx) {
6514                 /* the post-increment is used in STAY_AWAKE macro */
6515                 if (wlc->txpend16165war++ == 0)
6516                         wlc_set_ps_ctrl(wlc);
6517         } else {
6518                 wlc->txpend16165war--;
6519                 if (wlc->txpend16165war == 0)
6520                         wlc_set_ps_ctrl(wlc);
6521         }
6522 }
6523
6524 /* process an individual tx_status_t */
6525 /* WLC_HIGH_API */
6526 bool BCMFASTPATH
6527 wlc_dotxstatus(struct wlc_info *wlc, tx_status_t *txs, u32 frm_tx2)
6528 {
6529         struct sk_buff *p;
6530         uint queue;
6531         d11txh_t *txh;
6532         struct scb *scb = NULL;
6533         bool free_pdu;
6534         struct osl_info *osh;
6535         int tx_rts, tx_frame_count, tx_rts_count;
6536         uint totlen, supr_status;
6537         bool lastframe;
6538         struct dot11_header *h;
6539         u16 fc;
6540         u16 mcl;
6541         struct ieee80211_tx_info *tx_info;
6542         struct ieee80211_tx_rate *txrate;
6543         int i;
6544
6545         (void)(frm_tx2);        /* Compiler reference to avoid unused variable warning */
6546
6547         /* discard intermediate indications for ucode with one legitimate case:
6548          *   e.g. if "useRTS" is set. ucode did a successful rts/cts exchange, but the subsequent
6549          *   tx of DATA failed. so it will start rts/cts from the beginning (resetting the rts
6550          *   transmission count)
6551          */
6552         if (!(txs->status & TX_STATUS_AMPDU)
6553             && (txs->status & TX_STATUS_INTERMEDIATE)) {
6554                 WLCNTADD(wlc->pub->_cnt->txnoack,
6555                          ((txs->
6556                            status & TX_STATUS_FRM_RTX_MASK) >>
6557                           TX_STATUS_FRM_RTX_SHIFT));
6558                 WL_ERROR("%s: INTERMEDIATE but not AMPDU\n", __func__);
6559                 return false;
6560         }
6561
6562         osh = wlc->osh;
6563         queue = txs->frameid & TXFID_QUEUE_MASK;
6564         ASSERT(queue < NFIFO);
6565         if (queue >= NFIFO) {
6566                 p = NULL;
6567                 goto fatal;
6568         }
6569
6570         p = GETNEXTTXP(wlc, queue);
6571         if (WLC_WAR16165(wlc))
6572                 wlc_war16165(wlc, false);
6573         if (p == NULL)
6574                 p = wlc_15420war(wlc, queue);
6575         ASSERT(p != NULL);
6576         if (p == NULL)
6577                 goto fatal;
6578
6579         txh = (d11txh_t *) (p->data);
6580         mcl = ltoh16(txh->MacTxControlLow);
6581
6582         if (txs->phyerr) {
6583                 WL_ERROR("phyerr 0x%x, rate 0x%x\n",
6584                          txs->phyerr, txh->MainRates);
6585                 wlc_print_txdesc(txh);
6586                 wlc_print_txstatus(txs);
6587         }
6588
6589         ASSERT(txs->frameid == htol16(txh->TxFrameID));
6590         if (txs->frameid != htol16(txh->TxFrameID))
6591                 goto fatal;
6592
6593         tx_info = IEEE80211_SKB_CB(p);
6594         h = (struct dot11_header *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
6595         fc = ltoh16(h->fc);
6596
6597         scb = (struct scb *)tx_info->control.sta->drv_priv;
6598
6599         if (N_ENAB(wlc->pub)) {
6600                 u8 *plcp = (u8 *) (txh + 1);
6601                 if (PLCP3_ISSGI(plcp[3]))
6602                         WLCNTINCR(wlc->pub->_cnt->txmpdu_sgi);
6603                 if (PLCP3_ISSTBC(plcp[3]))
6604                         WLCNTINCR(wlc->pub->_cnt->txmpdu_stbc);
6605         }
6606
6607         if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
6608                 ASSERT((mcl & TXC_AMPDU_MASK) != TXC_AMPDU_NONE);
6609                 wlc_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
6610                 return false;
6611         }
6612
6613         supr_status = txs->status & TX_STATUS_SUPR_MASK;
6614         if (supr_status == TX_STATUS_SUPR_BADCH)
6615                 WL_NONE("%s: Pkt tx suppressed, possibly channel %d\n",
6616                         __func__, CHSPEC_CHANNEL(wlc->default_bss->chanspec));
6617
6618         tx_rts = htol16(txh->MacTxControlLow) & TXC_SENDRTS;
6619         tx_frame_count =
6620             (txs->status & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT;
6621         tx_rts_count =
6622             (txs->status & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT;
6623
6624         lastframe = (fc & FC_MOREFRAG) == 0;
6625
6626         if (!lastframe) {
6627                 WL_ERROR("Not last frame!\n");
6628         } else {
6629                 u16 sfbl, lfbl;
6630                 ieee80211_tx_info_clear_status(tx_info);
6631                 if (queue < AC_COUNT) {
6632                         sfbl = WLC_WME_RETRY_SFB_GET(wlc, wme_fifo2ac[queue]);
6633                         lfbl = WLC_WME_RETRY_LFB_GET(wlc, wme_fifo2ac[queue]);
6634                 } else {
6635                         sfbl = wlc->SFBL;
6636                         lfbl = wlc->LFBL;
6637                 }
6638
6639                 txrate = tx_info->status.rates;
6640                 /* FIXME: this should use a combination of sfbl, lfbl depending on frame length and RTS setting */
6641                 if ((tx_frame_count > sfbl) && (txrate[1].idx >= 0)) {
6642                         /* rate selection requested a fallback rate and we used it */
6643                         txrate->count = lfbl;
6644                         txrate[1].count = tx_frame_count - lfbl;
6645                 } else {
6646                         /* rate selection did not request fallback rate, or we didn't need it */
6647                         txrate->count = tx_frame_count;
6648                         /* rc80211_minstrel.c:minstrel_tx_status() expects unused rates to be marked with idx = -1 */
6649                         txrate[1].idx = -1;
6650                         txrate[1].count = 0;
6651                 }
6652
6653                 /* clear the rest of the rates */
6654                 for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) {
6655                         txrate[i].idx = -1;
6656                         txrate[i].count = 0;
6657                 }
6658
6659                 if (txs->status & TX_STATUS_ACK_RCV)
6660                         tx_info->flags |= IEEE80211_TX_STAT_ACK;
6661         }
6662
6663         totlen = pkttotlen(osh, p);
6664         free_pdu = true;
6665
6666         wlc_txfifo_complete(wlc, queue, 1);
6667
6668         if (lastframe) {
6669                 p->next = NULL;
6670                 p->prev = NULL;
6671                 wlc->txretried = 0;
6672                 /* remove PLCP & Broadcom tx descriptor header */
6673                 skb_pull(p, D11_PHY_HDR_LEN);
6674                 skb_pull(p, D11_TXH_LEN);
6675                 ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p);
6676                 WLCNTINCR(wlc->pub->_cnt->ieee_tx_status);
6677         } else {
6678                 WL_ERROR("%s: Not last frame => not calling tx_status\n",
6679                          __func__);
6680         }
6681
6682         return false;
6683
6684  fatal:
6685         ASSERT(0);
6686         if (p)
6687                 pkt_buf_free_skb(osh, p, true);
6688
6689         return true;
6690
6691 }
6692
6693 void BCMFASTPATH
6694 wlc_txfifo_complete(struct wlc_info *wlc, uint fifo, s8 txpktpend)
6695 {
6696         TXPKTPENDDEC(wlc, fifo, txpktpend);
6697         WL_TRACE("wlc_txfifo_complete, pktpend dec %d to %d\n",
6698                  txpktpend, TXPKTPENDGET(wlc, fifo));
6699
6700         /* There is more room; mark precedences related to this FIFO sendable */
6701         WLC_TX_FIFO_ENAB(wlc, fifo);
6702         ASSERT(TXPKTPENDGET(wlc, fifo) >= 0);
6703
6704         if (!TXPKTPENDTOT(wlc)) {
6705                 if (wlc->block_datafifo & DATA_BLOCK_TX_SUPR)
6706                         wlc_bsscfg_tx_check(wlc);
6707         }
6708
6709         /* Clear MHF2_TXBCMC_NOW flag if BCMC fifo has drained */
6710         if (AP_ENAB(wlc->pub) &&
6711             wlc->bcmcfifo_drain && !TXPKTPENDGET(wlc, TX_BCMC_FIFO)) {
6712                 wlc->bcmcfifo_drain = false;
6713                 wlc_mhf(wlc, MHF2, MHF2_TXBCMC_NOW, 0, WLC_BAND_AUTO);
6714         }
6715
6716         /* figure out which bsscfg is being worked on... */
6717 }
6718
6719 /* Given the beacon interval in kus, and a 64 bit TSF in us,
6720  * return the offset (in us) of the TSF from the last TBTT
6721  */
6722 u32 wlc_calc_tbtt_offset(u32 bp, u32 tsf_h, u32 tsf_l)
6723 {
6724         u32 k, btklo, btkhi, offset;
6725
6726         /* TBTT is always an even multiple of the beacon_interval,
6727          * so the TBTT less than or equal to the beacon timestamp is
6728          * the beacon timestamp minus the beacon timestamp modulo
6729          * the beacon interval.
6730          *
6731          * TBTT = BT - (BT % BIu)
6732          *      = (BTk - (BTk % BP)) * 2^10
6733          *
6734          * BT = beacon timestamp (usec, 64bits)
6735          * BTk = beacon timestamp (Kusec, 54bits)
6736          * BP = beacon interval (Kusec, 16bits)
6737          * BIu = BP * 2^10 = beacon interval (usec, 26bits)
6738          *
6739          * To keep the calculations in u32s, the modulo operation
6740          * on the high part of BT needs to be done in parts using the
6741          * relations:
6742          * X*Y mod Z = ((X mod Z) * (Y mod Z)) mod Z
6743          * and
6744          * (X + Y) mod Z = ((X mod Z) + (Y mod Z)) mod Z
6745          *
6746          * So, if BTk[n] = u16 n [0,3] of BTk.
6747          * BTk % BP = SUM((BTk[n] * 2^16n) % BP , 0<=n<4) % BP
6748          * and the SUM term can be broken down:
6749          * (BTk[n] *     2^16n)    % BP
6750          * (BTk[n] * (2^16n % BP)) % BP
6751          *
6752          * Create a set of power of 2 mod BP constants:
6753          * K[n] = 2^(16n) % BP
6754          *      = (K[n-1] * 2^16) % BP
6755          * K[2] = 2^32 % BP = ((2^16 % BP) * 2^16) % BP
6756          *
6757          * BTk % BP = BTk[0-1] % BP +
6758          *            (BTk[2] * K[2]) % BP +
6759          *            (BTk[3] * K[3]) % BP
6760          *
6761          * Since K[n] < 2^16 and BTk[n] is < 2^16, then BTk[n] * K[n] < 2^32
6762          */
6763
6764         /* BTk = BT >> 10, btklo = BTk[0-3], bkthi = BTk[4-6] */
6765         btklo = (tsf_h << 22) | (tsf_l >> 10);
6766         btkhi = tsf_h >> 10;
6767
6768         /* offset = BTk % BP */
6769         offset = btklo % bp;
6770
6771         /* K[2] = ((2^16 % BP) * 2^16) % BP */
6772         k = (u32) (1 << 16) % bp;
6773         k = (u32) (k * 1 << 16) % (u32) bp;
6774
6775         /* offset += (BTk[2] * K[2]) % BP */
6776         offset += ((btkhi & 0xffff) * k) % bp;
6777
6778         /* BTk[3] */
6779         btkhi = btkhi >> 16;
6780
6781         /* k[3] = (K[2] * 2^16) % BP */
6782         k = (k << 16) % bp;
6783
6784         /* offset += (BTk[3] * K[3]) % BP */
6785         offset += ((btkhi & 0xffff) * k) % bp;
6786
6787         offset = offset % bp;
6788
6789         /* convert offset from kus to us by shifting up 10 bits and
6790          * add in the low 10 bits of tsf that we ignored
6791          */
6792         offset = (offset << 10) + (tsf_l & 0x3FF);
6793
6794         return offset;
6795 }
6796
6797 /* Update beacon listen interval in shared memory */
6798 void wlc_bcn_li_upd(struct wlc_info *wlc)
6799 {
6800         if (AP_ENAB(wlc->pub))
6801                 return;
6802
6803         /* wake up every DTIM is the default */
6804         if (wlc->bcn_li_dtim == 1)
6805                 wlc_write_shm(wlc, M_BCN_LI, 0);
6806         else
6807                 wlc_write_shm(wlc, M_BCN_LI,
6808                               (wlc->bcn_li_dtim << 8) | wlc->bcn_li_bcn);
6809 }
6810
6811 static void
6812 prep_mac80211_status(struct wlc_info *wlc, d11rxhdr_t *rxh, struct sk_buff *p,
6813                      struct ieee80211_rx_status *rx_status)
6814 {
6815         u32 tsf_l, tsf_h;
6816         wlc_d11rxhdr_t *wlc_rxh = (wlc_d11rxhdr_t *) rxh;
6817         int preamble;
6818         int channel;
6819         ratespec_t rspec;
6820         unsigned char *plcp;
6821
6822         wlc_read_tsf(wlc, &tsf_l, &tsf_h);      /* mactime */
6823         rx_status->mactime = tsf_h;
6824         rx_status->mactime <<= 32;
6825         rx_status->mactime |= tsf_l;
6826         rx_status->flag |= RX_FLAG_TSFT;
6827
6828         channel = WLC_CHAN_CHANNEL(rxh->RxChan);
6829
6830         /* XXX  Channel/badn needs to be filtered against whether we are single/dual band card */
6831         if (channel > 14) {
6832                 rx_status->band = IEEE80211_BAND_5GHZ;
6833                 rx_status->freq = wf_channel2mhz(channel, WF_CHAN_FACTOR_5_G);
6834         } else {
6835                 rx_status->band = IEEE80211_BAND_2GHZ;
6836                 rx_status->freq = wf_channel2mhz(channel, WF_CHAN_FACTOR_2_4_G);
6837         }
6838
6839         rx_status->signal = wlc_rxh->rssi;      /* signal */
6840
6841         /* noise */
6842         /* qual */
6843         rx_status->antenna = (rxh->PhyRxStatus_0 & PRXS0_RXANT_UPSUBBAND) ? 1 : 0;      /* ant */
6844
6845         plcp = p->data;
6846
6847         rspec = wlc_compute_rspec(rxh, plcp);
6848         if (IS_MCS(rspec)) {
6849                 rx_status->rate_idx = rspec & RSPEC_RATE_MASK;
6850                 rx_status->flag |= RX_FLAG_HT;
6851                 if (RSPEC_IS40MHZ(rspec))
6852                         rx_status->flag |= RX_FLAG_40MHZ;
6853         } else {
6854                 switch (RSPEC2RATE(rspec)) {
6855                 case WLC_RATE_1M:
6856                         rx_status->rate_idx = 0;
6857                         break;
6858                 case WLC_RATE_2M:
6859                         rx_status->rate_idx = 1;
6860                         break;
6861                 case WLC_RATE_5M5:
6862                         rx_status->rate_idx = 2;
6863                         break;
6864                 case WLC_RATE_11M:
6865                         rx_status->rate_idx = 3;
6866                         break;
6867                 case WLC_RATE_6M:
6868                         rx_status->rate_idx = 4;
6869                         break;
6870                 case WLC_RATE_9M:
6871                         rx_status->rate_idx = 5;
6872                         break;
6873                 case WLC_RATE_12M:
6874                         rx_status->rate_idx = 6;
6875                         break;
6876                 case WLC_RATE_18M:
6877                         rx_status->rate_idx = 7;
6878                         break;
6879                 case WLC_RATE_24M:
6880                         rx_status->rate_idx = 8;
6881                         break;
6882                 case WLC_RATE_36M:
6883                         rx_status->rate_idx = 9;
6884                         break;
6885                 case WLC_RATE_48M:
6886                         rx_status->rate_idx = 10;
6887                         break;
6888                 case WLC_RATE_54M:
6889                         rx_status->rate_idx = 11;
6890                         break;
6891                 default:
6892                         WL_ERROR("%s: Unknown rate\n", __func__);
6893                 }
6894
6895                 /* Determine short preamble and rate_idx */
6896                 preamble = 0;
6897                 if (IS_CCK(rspec)) {
6898                         if (rxh->PhyRxStatus_0 & PRXS0_SHORTH)
6899                                 WL_ERROR("Short CCK\n");
6900                         rx_status->flag |= RX_FLAG_SHORTPRE;
6901                 } else if (IS_OFDM(rspec)) {
6902                         rx_status->flag |= RX_FLAG_SHORTPRE;
6903                 } else {
6904                         WL_ERROR("%s: Unknown modulation\n", __func__);
6905                 }
6906         }
6907
6908         if (PLCP3_ISSGI(plcp[3]))
6909                 rx_status->flag |= RX_FLAG_SHORT_GI;
6910
6911         if (rxh->RxStatus1 & RXS_DECERR) {
6912                 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
6913                 WL_ERROR("%s:  RX_FLAG_FAILED_PLCP_CRC\n", __func__);
6914         }
6915         if (rxh->RxStatus1 & RXS_FCSERR) {
6916                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
6917                 WL_ERROR("%s:  RX_FLAG_FAILED_FCS_CRC\n", __func__);
6918         }
6919 }
6920
6921 static void
6922 wlc_recvctl(struct wlc_info *wlc, struct osl_info *osh, d11rxhdr_t *rxh,
6923             struct sk_buff *p)
6924 {
6925         int len_mpdu;
6926         struct ieee80211_rx_status rx_status;
6927 #if defined(BCMDBG)
6928         struct sk_buff *skb = p;
6929 #endif                          /* BCMDBG */
6930         /* Todo:
6931          * Cache plcp for first MPDU of AMPD and use chacched version for INTERMEDIATE.
6932          * Test for INTERMEDIATE  like so:
6933          * if (!(plcp[0] | plcp[1] | plcp[2]))
6934          */
6935
6936         memset(&rx_status, 0, sizeof(rx_status));
6937         prep_mac80211_status(wlc, rxh, p, &rx_status);
6938
6939         /* mac header+body length, exclude CRC and plcp header */
6940         len_mpdu = p->len - D11_PHY_HDR_LEN - DOT11_FCS_LEN;
6941         skb_pull(p, D11_PHY_HDR_LEN);
6942         __skb_trim(p, len_mpdu);
6943
6944         ASSERT(!(p->next));
6945         ASSERT(!(p->prev));
6946
6947         ASSERT(IS_ALIGNED((unsigned long)skb->data, 2));
6948
6949         memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status));
6950         ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p);
6951
6952         WLCNTINCR(wlc->pub->_cnt->ieee_rx);
6953         osh->pktalloced--;
6954         return;
6955 }
6956
6957 void wlc_bss_list_free(struct wlc_info *wlc, wlc_bss_list_t *bss_list)
6958 {
6959         uint index;
6960         wlc_bss_info_t *bi;
6961
6962         if (!bss_list) {
6963                 WL_ERROR("%s: Attempting to free NULL list\n", __func__);
6964                 return;
6965         }
6966         /* inspect all BSS descriptor */
6967         for (index = 0; index < bss_list->count; index++) {
6968                 bi = bss_list->ptrs[index];
6969                 if (bi) {
6970                         if (bi->bcn_prb) {
6971                                 kfree(bi->bcn_prb);
6972                         }
6973                         kfree(bi);
6974                         bss_list->ptrs[index] = NULL;
6975                 }
6976         }
6977         bss_list->count = 0;
6978 }
6979
6980 /* Process received frames */
6981 /*
6982  * Return true if more frames need to be processed. false otherwise.
6983  * Param 'bound' indicates max. # frames to process before break out.
6984  */
6985 /* WLC_HIGH_API */
6986 void BCMFASTPATH wlc_recv(struct wlc_info *wlc, struct sk_buff *p)
6987 {
6988         d11rxhdr_t *rxh;
6989         struct dot11_header *h;
6990         struct osl_info *osh;
6991         u16 fc;
6992         uint len;
6993         bool is_amsdu;
6994
6995         WL_TRACE("wl%d: wlc_recv\n", wlc->pub->unit);
6996
6997         osh = wlc->osh;
6998
6999         /* frame starts with rxhdr */
7000         rxh = (d11rxhdr_t *) (p->data);
7001
7002         /* strip off rxhdr */
7003         skb_pull(p, wlc->hwrxoff);
7004
7005         /* fixup rx header endianness */
7006         ltoh16_buf((void *)rxh, sizeof(d11rxhdr_t));
7007
7008         /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU subframes */
7009         if (rxh->RxStatus1 & RXS_PBPRES) {
7010                 if (p->len < 2) {
7011                         WLCNTINCR(wlc->pub->_cnt->rxrunt);
7012                         WL_ERROR("wl%d: wlc_recv: rcvd runt of len %d\n",
7013                                  wlc->pub->unit, p->len);
7014                         goto toss;
7015                 }
7016                 skb_pull(p, 2);
7017         }
7018
7019         h = (struct dot11_header *)(p->data + D11_PHY_HDR_LEN);
7020         len = p->len;
7021
7022         if (rxh->RxStatus1 & RXS_FCSERR) {
7023                 if (wlc->pub->mac80211_state & MAC80211_PROMISC_BCNS) {
7024                         WL_ERROR("FCSERR while scanning******* - tossing\n");
7025                         goto toss;
7026                 } else {
7027                         WL_ERROR("RCSERR!!!\n");
7028                         goto toss;
7029                 }
7030         }
7031
7032         /* check received pkt has at least frame control field */
7033         if (len >= D11_PHY_HDR_LEN + sizeof(h->fc)) {
7034                 fc = ltoh16(h->fc);
7035         } else {
7036                 WLCNTINCR(wlc->pub->_cnt->rxrunt);
7037                 goto toss;
7038         }
7039
7040         is_amsdu = rxh->RxStatus2 & RXS_AMSDU_MASK;
7041
7042         /* explicitly test bad src address to avoid sending bad deauth */
7043         if (!is_amsdu) {
7044                 /* CTS and ACK CTL frames are w/o a2 */
7045                 if (FC_TYPE(fc) == FC_TYPE_DATA || FC_TYPE(fc) == FC_TYPE_MNG) {
7046                         if ((is_zero_ether_addr(h->a2.octet) ||
7047                              is_multicast_ether_addr(h->a2.octet))) {
7048                                 WL_ERROR("wl%d: %s: dropping a frame with invalid src mac address, a2: %pM\n",
7049                                          wlc->pub->unit, __func__, &h->a2);
7050                                 WLCNTINCR(wlc->pub->_cnt->rxbadsrcmac);
7051                                 goto toss;
7052                         }
7053                         WLCNTINCR(wlc->pub->_cnt->rxfrag);
7054                 }
7055         }
7056
7057         /* due to sheer numbers, toss out probe reqs for now */
7058         if (FC_TYPE(fc) == FC_TYPE_MNG) {
7059                 if ((fc & FC_KIND_MASK) == FC_PROBE_REQ)
7060                         goto toss;
7061         }
7062
7063         if (is_amsdu) {
7064                 WL_ERROR("%s: is_amsdu causing toss\n", __func__);
7065                 goto toss;
7066         }
7067
7068         wlc_recvctl(wlc, osh, rxh, p);
7069         return;
7070
7071  toss:
7072         pkt_buf_free_skb(osh, p, false);
7073 }
7074
7075 /* calculate frame duration for Mixed-mode L-SIG spoofing, return
7076  * number of bytes goes in the length field
7077  *
7078  * Formula given by HT PHY Spec v 1.13
7079  *   len = 3(nsyms + nstream + 3) - 3
7080  */
7081 u16 BCMFASTPATH
7082 wlc_calc_lsig_len(struct wlc_info *wlc, ratespec_t ratespec, uint mac_len)
7083 {
7084         uint nsyms, len = 0, kNdps;
7085
7086         WL_TRACE("wl%d: wlc_calc_lsig_len: rate %d, len%d\n",
7087                  wlc->pub->unit, RSPEC2RATE(ratespec), mac_len);
7088
7089         if (IS_MCS(ratespec)) {
7090                 uint mcs = ratespec & RSPEC_RATE_MASK;
7091                 /* MCS_TXS(mcs) returns num tx streams - 1 */
7092                 int tot_streams = (MCS_TXS(mcs) + 1) + RSPEC_STC(ratespec);
7093
7094                 ASSERT(WLC_PHY_11N_CAP(wlc->band));
7095                 /* the payload duration calculation matches that of regular ofdm */
7096                 /* 1000Ndbps = kbps * 4 */
7097                 kNdps =
7098                     MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
7099                              RSPEC_ISSGI(ratespec)) * 4;
7100
7101                 if (RSPEC_STC(ratespec) == 0)
7102                         /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
7103                         nsyms =
7104                             CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
7105                                   APHY_TAIL_NBITS) * 1000, kNdps);
7106                 else
7107                         /* STBC needs to have even number of symbols */
7108                         nsyms =
7109                             2 *
7110                             CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
7111                                   APHY_TAIL_NBITS) * 1000, 2 * kNdps);
7112
7113                 nsyms += (tot_streams + 3);     /* (+3) account for HT-SIG(2) and HT-STF(1) */
7114                 /* 3 bytes/symbol @ legacy 6Mbps rate */
7115                 len = (3 * nsyms) - 3;  /* (-3) excluding service bits and tail bits */
7116         }
7117
7118         return (u16) len;
7119 }
7120
7121 /* calculate frame duration of a given rate and length, return time in usec unit */
7122 uint BCMFASTPATH
7123 wlc_calc_frame_time(struct wlc_info *wlc, ratespec_t ratespec, u8 preamble_type,
7124                     uint mac_len)
7125 {
7126         uint nsyms, dur = 0, Ndps, kNdps;
7127         uint rate = RSPEC2RATE(ratespec);
7128
7129         if (rate == 0) {
7130                 ASSERT(0);
7131                 WL_ERROR("wl%d: WAR: using rate of 1 mbps\n", wlc->pub->unit);
7132                 rate = WLC_RATE_1M;
7133         }
7134
7135         WL_TRACE("wl%d: wlc_calc_frame_time: rspec 0x%x, preamble_type %d, len%d\n",
7136                  wlc->pub->unit, ratespec, preamble_type, mac_len);
7137
7138         if (IS_MCS(ratespec)) {
7139                 uint mcs = ratespec & RSPEC_RATE_MASK;
7140                 int tot_streams = MCS_TXS(mcs) + RSPEC_STC(ratespec);
7141                 ASSERT(WLC_PHY_11N_CAP(wlc->band));
7142                 ASSERT(WLC_IS_MIMO_PREAMBLE(preamble_type));
7143
7144                 dur = PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
7145                 if (preamble_type == WLC_MM_PREAMBLE)
7146                         dur += PREN_MM_EXT;
7147                 /* 1000Ndbps = kbps * 4 */
7148                 kNdps =
7149                     MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
7150                              RSPEC_ISSGI(ratespec)) * 4;
7151
7152                 if (RSPEC_STC(ratespec) == 0)
7153                         /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
7154                         nsyms =
7155                             CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
7156                                   APHY_TAIL_NBITS) * 1000, kNdps);
7157                 else
7158                         /* STBC needs to have even number of symbols */
7159                         nsyms =
7160                             2 *
7161                             CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
7162                                   APHY_TAIL_NBITS) * 1000, 2 * kNdps);
7163
7164                 dur += APHY_SYMBOL_TIME * nsyms;
7165                 if (BAND_2G(wlc->band->bandtype))
7166                         dur += DOT11_OFDM_SIGNAL_EXTENSION;
7167         } else if (IS_OFDM(rate)) {
7168                 dur = APHY_PREAMBLE_TIME;
7169                 dur += APHY_SIGNAL_TIME;
7170                 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
7171                 Ndps = rate * 2;
7172                 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
7173                 nsyms =
7174                     CEIL((APHY_SERVICE_NBITS + 8 * mac_len + APHY_TAIL_NBITS),
7175                          Ndps);
7176                 dur += APHY_SYMBOL_TIME * nsyms;
7177                 if (BAND_2G(wlc->band->bandtype))
7178                         dur += DOT11_OFDM_SIGNAL_EXTENSION;
7179         } else {
7180                 /* calc # bits * 2 so factor of 2 in rate (1/2 mbps) will divide out */
7181                 mac_len = mac_len * 8 * 2;
7182                 /* calc ceiling of bits/rate = microseconds of air time */
7183                 dur = (mac_len + rate - 1) / rate;
7184                 if (preamble_type & WLC_SHORT_PREAMBLE)
7185                         dur += BPHY_PLCP_SHORT_TIME;
7186                 else
7187                         dur += BPHY_PLCP_TIME;
7188         }
7189         return dur;
7190 }
7191
7192 /* The opposite of wlc_calc_frame_time */
7193 static uint
7194 wlc_calc_frame_len(struct wlc_info *wlc, ratespec_t ratespec, u8 preamble_type,
7195                    uint dur)
7196 {
7197         uint nsyms, mac_len, Ndps, kNdps;
7198         uint rate = RSPEC2RATE(ratespec);
7199
7200         WL_TRACE("wl%d: wlc_calc_frame_len: rspec 0x%x, preamble_type %d, dur %d\n",
7201                  wlc->pub->unit, ratespec, preamble_type, dur);
7202
7203         if (IS_MCS(ratespec)) {
7204                 uint mcs = ratespec & RSPEC_RATE_MASK;
7205                 int tot_streams = MCS_TXS(mcs) + RSPEC_STC(ratespec);
7206                 ASSERT(WLC_PHY_11N_CAP(wlc->band));
7207                 dur -= PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
7208                 /* payload calculation matches that of regular ofdm */
7209                 if (BAND_2G(wlc->band->bandtype))
7210                         dur -= DOT11_OFDM_SIGNAL_EXTENSION;
7211                 /* kNdbps = kbps * 4 */
7212                 kNdps =
7213                     MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
7214                              RSPEC_ISSGI(ratespec)) * 4;
7215                 nsyms = dur / APHY_SYMBOL_TIME;
7216                 mac_len =
7217                     ((nsyms * kNdps) -
7218                      ((APHY_SERVICE_NBITS + APHY_TAIL_NBITS) * 1000)) / 8000;
7219         } else if (IS_OFDM(ratespec)) {
7220                 dur -= APHY_PREAMBLE_TIME;
7221                 dur -= APHY_SIGNAL_TIME;
7222                 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
7223                 Ndps = rate * 2;
7224                 nsyms = dur / APHY_SYMBOL_TIME;
7225                 mac_len =
7226                     ((nsyms * Ndps) -
7227                      (APHY_SERVICE_NBITS + APHY_TAIL_NBITS)) / 8;
7228         } else {
7229                 if (preamble_type & WLC_SHORT_PREAMBLE)
7230                         dur -= BPHY_PLCP_SHORT_TIME;
7231                 else
7232                         dur -= BPHY_PLCP_TIME;
7233                 mac_len = dur * rate;
7234                 /* divide out factor of 2 in rate (1/2 mbps) */
7235                 mac_len = mac_len / 8 / 2;
7236         }
7237         return mac_len;
7238 }
7239
7240 static uint
7241 wlc_calc_ba_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
7242 {
7243         WL_TRACE("wl%d: wlc_calc_ba_time: rspec 0x%x, preamble_type %d\n",
7244                  wlc->pub->unit, rspec, preamble_type);
7245         /* Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that is less than
7246          * or equal to the rate of the immediately previous frame in the FES
7247          */
7248         rspec = WLC_BASIC_RATE(wlc, rspec);
7249         ASSERT(VALID_RATE_DBG(wlc, rspec));
7250
7251         /* BA len == 32 == 16(ctl hdr) + 4(ba len) + 8(bitmap) + 4(fcs) */
7252         return wlc_calc_frame_time(wlc, rspec, preamble_type,
7253                                    (DOT11_BA_LEN + DOT11_BA_BITMAP_LEN +
7254                                     DOT11_FCS_LEN));
7255 }
7256
7257 static uint BCMFASTPATH
7258 wlc_calc_ack_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
7259 {
7260         uint dur = 0;
7261
7262         WL_TRACE("wl%d: wlc_calc_ack_time: rspec 0x%x, preamble_type %d\n",
7263                  wlc->pub->unit, rspec, preamble_type);
7264         /* Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that is less than
7265          * or equal to the rate of the immediately previous frame in the FES
7266          */
7267         rspec = WLC_BASIC_RATE(wlc, rspec);
7268         ASSERT(VALID_RATE_DBG(wlc, rspec));
7269
7270         /* ACK frame len == 14 == 2(fc) + 2(dur) + 6(ra) + 4(fcs) */
7271         dur =
7272             wlc_calc_frame_time(wlc, rspec, preamble_type,
7273                                 (DOT11_ACK_LEN + DOT11_FCS_LEN));
7274         return dur;
7275 }
7276
7277 static uint
7278 wlc_calc_cts_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
7279 {
7280         WL_TRACE("wl%d: wlc_calc_cts_time: ratespec 0x%x, preamble_type %d\n",
7281                  wlc->pub->unit, rspec, preamble_type);
7282         return wlc_calc_ack_time(wlc, rspec, preamble_type);
7283 }
7284
7285 /* derive wlc->band->basic_rate[] table from 'rateset' */
7286 void wlc_rate_lookup_init(struct wlc_info *wlc, wlc_rateset_t *rateset)
7287 {
7288         u8 rate;
7289         u8 mandatory;
7290         u8 cck_basic = 0;
7291         u8 ofdm_basic = 0;
7292         u8 *br = wlc->band->basic_rate;
7293         uint i;
7294
7295         /* incoming rates are in 500kbps units as in 802.11 Supported Rates */
7296         memset(br, 0, WLC_MAXRATE + 1);
7297
7298         /* For each basic rate in the rates list, make an entry in the
7299          * best basic lookup.
7300          */
7301         for (i = 0; i < rateset->count; i++) {
7302                 /* only make an entry for a basic rate */
7303                 if (!(rateset->rates[i] & WLC_RATE_FLAG))
7304                         continue;
7305
7306                 /* mask off basic bit */
7307                 rate = (rateset->rates[i] & RATE_MASK);
7308
7309                 if (rate > WLC_MAXRATE) {
7310                         WL_ERROR("wlc_rate_lookup_init: invalid rate 0x%X in rate set\n",
7311                                  rateset->rates[i]);
7312                         continue;
7313                 }
7314
7315                 br[rate] = rate;
7316         }
7317
7318         /* The rate lookup table now has non-zero entries for each
7319          * basic rate, equal to the basic rate: br[basicN] = basicN
7320          *
7321          * To look up the best basic rate corresponding to any
7322          * particular rate, code can use the basic_rate table
7323          * like this
7324          *
7325          * basic_rate = wlc->band->basic_rate[tx_rate]
7326          *
7327          * Make sure there is a best basic rate entry for
7328          * every rate by walking up the table from low rates
7329          * to high, filling in holes in the lookup table
7330          */
7331
7332         for (i = 0; i < wlc->band->hw_rateset.count; i++) {
7333                 rate = wlc->band->hw_rateset.rates[i];
7334                 ASSERT(rate <= WLC_MAXRATE);
7335
7336                 if (br[rate] != 0) {
7337                         /* This rate is a basic rate.
7338                          * Keep track of the best basic rate so far by
7339                          * modulation type.
7340                          */
7341                         if (IS_OFDM(rate))
7342                                 ofdm_basic = rate;
7343                         else
7344                                 cck_basic = rate;
7345
7346                         continue;
7347                 }
7348
7349                 /* This rate is not a basic rate so figure out the
7350                  * best basic rate less than this rate and fill in
7351                  * the hole in the table
7352                  */
7353
7354                 br[rate] = IS_OFDM(rate) ? ofdm_basic : cck_basic;
7355
7356                 if (br[rate] != 0)
7357                         continue;
7358
7359                 if (IS_OFDM(rate)) {
7360                         /* In 11g and 11a, the OFDM mandatory rates are 6, 12, and 24 Mbps */
7361                         if (rate >= WLC_RATE_24M)
7362                                 mandatory = WLC_RATE_24M;
7363                         else if (rate >= WLC_RATE_12M)
7364                                 mandatory = WLC_RATE_12M;
7365                         else
7366                                 mandatory = WLC_RATE_6M;
7367                 } else {
7368                         /* In 11b, all the CCK rates are mandatory 1 - 11 Mbps */
7369                         mandatory = rate;
7370                 }
7371
7372                 br[rate] = mandatory;
7373         }
7374 }
7375
7376 static void wlc_write_rate_shm(struct wlc_info *wlc, u8 rate, u8 basic_rate)
7377 {
7378         u8 phy_rate, index;
7379         u8 basic_phy_rate, basic_index;
7380         u16 dir_table, basic_table;
7381         u16 basic_ptr;
7382
7383         /* Shared memory address for the table we are reading */
7384         dir_table = IS_OFDM(basic_rate) ? M_RT_DIRMAP_A : M_RT_DIRMAP_B;
7385
7386         /* Shared memory address for the table we are writing */
7387         basic_table = IS_OFDM(rate) ? M_RT_BBRSMAP_A : M_RT_BBRSMAP_B;
7388
7389         /*
7390          * for a given rate, the LS-nibble of the PLCP SIGNAL field is
7391          * the index into the rate table.
7392          */
7393         phy_rate = rate_info[rate] & RATE_MASK;
7394         basic_phy_rate = rate_info[basic_rate] & RATE_MASK;
7395         index = phy_rate & 0xf;
7396         basic_index = basic_phy_rate & 0xf;
7397
7398         /* Find the SHM pointer to the ACK rate entry by looking in the
7399          * Direct-map Table
7400          */
7401         basic_ptr = wlc_read_shm(wlc, (dir_table + basic_index * 2));
7402
7403         /* Update the SHM BSS-basic-rate-set mapping table with the pointer
7404          * to the correct basic rate for the given incoming rate
7405          */
7406         wlc_write_shm(wlc, (basic_table + index * 2), basic_ptr);
7407 }
7408
7409 static const wlc_rateset_t *wlc_rateset_get_hwrs(struct wlc_info *wlc)
7410 {
7411         const wlc_rateset_t *rs_dflt;
7412
7413         if (WLC_PHY_11N_CAP(wlc->band)) {
7414                 if (BAND_5G(wlc->band->bandtype))
7415                         rs_dflt = &ofdm_mimo_rates;
7416                 else
7417                         rs_dflt = &cck_ofdm_mimo_rates;
7418         } else if (wlc->band->gmode)
7419                 rs_dflt = &cck_ofdm_rates;
7420         else
7421                 rs_dflt = &cck_rates;
7422
7423         return rs_dflt;
7424 }
7425
7426 void wlc_set_ratetable(struct wlc_info *wlc)
7427 {
7428         const wlc_rateset_t *rs_dflt;
7429         wlc_rateset_t rs;
7430         u8 rate, basic_rate;
7431         uint i;
7432
7433         rs_dflt = wlc_rateset_get_hwrs(wlc);
7434         ASSERT(rs_dflt != NULL);
7435
7436         wlc_rateset_copy(rs_dflt, &rs);
7437         wlc_rateset_mcs_upd(&rs, wlc->stf->txstreams);
7438
7439         /* walk the phy rate table and update SHM basic rate lookup table */
7440         for (i = 0; i < rs.count; i++) {
7441                 rate = rs.rates[i] & RATE_MASK;
7442
7443                 /* for a given rate WLC_BASIC_RATE returns the rate at
7444                  * which a response ACK/CTS should be sent.
7445                  */
7446                 basic_rate = WLC_BASIC_RATE(wlc, rate);
7447                 if (basic_rate == 0) {
7448                         /* This should only happen if we are using a
7449                          * restricted rateset.
7450                          */
7451                         basic_rate = rs.rates[0] & RATE_MASK;
7452                 }
7453
7454                 wlc_write_rate_shm(wlc, rate, basic_rate);
7455         }
7456 }
7457
7458 /*
7459  * Return true if the specified rate is supported by the specified band.
7460  * WLC_BAND_AUTO indicates the current band.
7461  */
7462 bool wlc_valid_rate(struct wlc_info *wlc, ratespec_t rspec, int band,
7463                     bool verbose)
7464 {
7465         wlc_rateset_t *hw_rateset;
7466         uint i;
7467
7468         if ((band == WLC_BAND_AUTO) || (band == wlc->band->bandtype)) {
7469                 hw_rateset = &wlc->band->hw_rateset;
7470         } else if (NBANDS(wlc) > 1) {
7471                 hw_rateset = &wlc->bandstate[OTHERBANDUNIT(wlc)]->hw_rateset;
7472         } else {
7473                 /* other band specified and we are a single band device */
7474                 return false;
7475         }
7476
7477         /* check if this is a mimo rate */
7478         if (IS_MCS(rspec)) {
7479                 if (!VALID_MCS((rspec & RSPEC_RATE_MASK)))
7480                         goto error;
7481
7482                 return isset(hw_rateset->mcs, (rspec & RSPEC_RATE_MASK));
7483         }
7484
7485         for (i = 0; i < hw_rateset->count; i++)
7486                 if (hw_rateset->rates[i] == RSPEC2RATE(rspec))
7487                         return true;
7488  error:
7489         if (verbose) {
7490                 WL_ERROR("wl%d: wlc_valid_rate: rate spec 0x%x not in hw_rateset\n",
7491                          wlc->pub->unit, rspec);
7492         }
7493
7494         return false;
7495 }
7496
7497 static void wlc_update_mimo_band_bwcap(struct wlc_info *wlc, u8 bwcap)
7498 {
7499         uint i;
7500         struct wlcband *band;
7501
7502         for (i = 0; i < NBANDS(wlc); i++) {
7503                 if (IS_SINGLEBAND_5G(wlc->deviceid))
7504                         i = BAND_5G_INDEX;
7505                 band = wlc->bandstate[i];
7506                 if (band->bandtype == WLC_BAND_5G) {
7507                         if ((bwcap == WLC_N_BW_40ALL)
7508                             || (bwcap == WLC_N_BW_20IN2G_40IN5G))
7509                                 band->mimo_cap_40 = true;
7510                         else
7511                                 band->mimo_cap_40 = false;
7512                 } else {
7513                         ASSERT(band->bandtype == WLC_BAND_2G);
7514                         if (bwcap == WLC_N_BW_40ALL)
7515                                 band->mimo_cap_40 = true;
7516                         else
7517                                 band->mimo_cap_40 = false;
7518                 }
7519         }
7520
7521         wlc->mimo_band_bwcap = bwcap;
7522 }
7523
7524 void wlc_mod_prb_rsp_rate_table(struct wlc_info *wlc, uint frame_len)
7525 {
7526         const wlc_rateset_t *rs_dflt;
7527         wlc_rateset_t rs;
7528         u8 rate;
7529         u16 entry_ptr;
7530         u8 plcp[D11_PHY_HDR_LEN];
7531         u16 dur, sifs;
7532         uint i;
7533
7534         sifs = SIFS(wlc->band);
7535
7536         rs_dflt = wlc_rateset_get_hwrs(wlc);
7537         ASSERT(rs_dflt != NULL);
7538
7539         wlc_rateset_copy(rs_dflt, &rs);
7540         wlc_rateset_mcs_upd(&rs, wlc->stf->txstreams);
7541
7542         /* walk the phy rate table and update MAC core SHM basic rate table entries */
7543         for (i = 0; i < rs.count; i++) {
7544                 rate = rs.rates[i] & RATE_MASK;
7545
7546                 entry_ptr = wlc_rate_shm_offset(wlc, rate);
7547
7548                 /* Calculate the Probe Response PLCP for the given rate */
7549                 wlc_compute_plcp(wlc, rate, frame_len, plcp);
7550
7551                 /* Calculate the duration of the Probe Response frame plus SIFS for the MAC */
7552                 dur =
7553                     (u16) wlc_calc_frame_time(wlc, rate, WLC_LONG_PREAMBLE,
7554                                                  frame_len);
7555                 dur += sifs;
7556
7557                 /* Update the SHM Rate Table entry Probe Response values */
7558                 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_PLCP_POS,
7559                               (u16) (plcp[0] + (plcp[1] << 8)));
7560                 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_PLCP_POS + 2,
7561                               (u16) (plcp[2] + (plcp[3] << 8)));
7562                 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_DUR_POS, dur);
7563         }
7564 }
7565
7566 u16
7567 wlc_compute_bcntsfoff(struct wlc_info *wlc, ratespec_t rspec,
7568                       bool short_preamble, bool phydelay)
7569 {
7570         uint bcntsfoff = 0;
7571
7572         if (IS_MCS(rspec)) {
7573                 WL_ERROR("wl%d: recd beacon with mcs rate; rspec 0x%x\n",
7574                          wlc->pub->unit, rspec);
7575         } else if (IS_OFDM(rspec)) {
7576                 /* tx delay from MAC through phy to air (2.1 usec) +
7577                  * phy header time (preamble + PLCP SIGNAL == 20 usec) +
7578                  * PLCP SERVICE + MAC header time (SERVICE + FC + DUR + A1 + A2 + A3 + SEQ == 26
7579                  * bytes at beacon rate)
7580                  */
7581                 bcntsfoff += phydelay ? D11A_PHY_TX_DELAY : 0;
7582                 bcntsfoff += APHY_PREAMBLE_TIME + APHY_SIGNAL_TIME;
7583                 bcntsfoff +=
7584                     wlc_compute_airtime(wlc, rspec,
7585                                         APHY_SERVICE_NBITS / 8 +
7586                                         DOT11_MAC_HDR_LEN);
7587         } else {
7588                 /* tx delay from MAC through phy to air (3.4 usec) +
7589                  * phy header time (long preamble + PLCP == 192 usec) +
7590                  * MAC header time (FC + DUR + A1 + A2 + A3 + SEQ == 24 bytes at beacon rate)
7591                  */
7592                 bcntsfoff += phydelay ? D11B_PHY_TX_DELAY : 0;
7593                 bcntsfoff +=
7594                     short_preamble ? D11B_PHY_SPREHDR_TIME :
7595                     D11B_PHY_LPREHDR_TIME;
7596                 bcntsfoff += wlc_compute_airtime(wlc, rspec, DOT11_MAC_HDR_LEN);
7597         }
7598         return (u16) (bcntsfoff);
7599 }
7600
7601 /*      Max buffering needed for beacon template/prb resp template is 142 bytes.
7602  *
7603  *      PLCP header is 6 bytes.
7604  *      802.11 A3 header is 24 bytes.
7605  *      Max beacon frame body template length is 112 bytes.
7606  *      Max probe resp frame body template length is 110 bytes.
7607  *
7608  *      *len on input contains the max length of the packet available.
7609  *
7610  *      The *len value is set to the number of bytes in buf used, and starts with the PLCP
7611  *      and included up to, but not including, the 4 byte FCS.
7612  */
7613 static void
7614 wlc_bcn_prb_template(struct wlc_info *wlc, uint type, ratespec_t bcn_rspec,
7615                      wlc_bsscfg_t *cfg, u16 *buf, int *len)
7616 {
7617         cck_phy_hdr_t *plcp;
7618         struct dot11_management_header *h;
7619         int hdr_len, body_len;
7620
7621         ASSERT(*len >= 142);
7622         ASSERT(type == FC_BEACON || type == FC_PROBE_RESP);
7623
7624         if (MBSS_BCN_ENAB(cfg) && type == FC_BEACON)
7625                 hdr_len = DOT11_MAC_HDR_LEN;
7626         else
7627                 hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN;
7628         body_len = *len - hdr_len;      /* calc buffer size provided for frame body */
7629
7630         *len = hdr_len + body_len;      /* return actual size */
7631
7632         /* format PHY and MAC headers */
7633         memset((char *)buf, 0, hdr_len);
7634
7635         plcp = (cck_phy_hdr_t *) buf;
7636
7637         /* PLCP for Probe Response frames are filled in from core's rate table */
7638         if (type == FC_BEACON && !MBSS_BCN_ENAB(cfg)) {
7639                 /* fill in PLCP */
7640                 wlc_compute_plcp(wlc, bcn_rspec,
7641                                  (DOT11_MAC_HDR_LEN + body_len + DOT11_FCS_LEN),
7642                                  (u8 *) plcp);
7643
7644         }
7645         /* "Regular" and 16 MBSS but not for 4 MBSS */
7646         /* Update the phytxctl for the beacon based on the rspec */
7647         if (!SOFTBCN_ENAB(cfg))
7648                 wlc_beacon_phytxctl_txant_upd(wlc, bcn_rspec);
7649
7650         if (MBSS_BCN_ENAB(cfg) && type == FC_BEACON)
7651                 h = (struct dot11_management_header *)&plcp[0];
7652         else
7653                 h = (struct dot11_management_header *)&plcp[1];
7654
7655         /* fill in 802.11 header */
7656         h->fc = htol16((u16) type);
7657
7658         /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */
7659         /* A1 filled in by MAC for prb resp, broadcast for bcn */
7660         if (type == FC_BEACON)
7661                 bcopy((const char *)&ether_bcast, (char *)&h->da,
7662                       ETH_ALEN);
7663         bcopy((char *)&cfg->cur_etheraddr, (char *)&h->sa, ETH_ALEN);
7664         bcopy((char *)&cfg->BSSID, (char *)&h->bssid, ETH_ALEN);
7665
7666         /* SEQ filled in by MAC */
7667
7668         return;
7669 }
7670
7671 int wlc_get_header_len()
7672 {
7673         return TXOFF;
7674 }
7675
7676 /* Update a beacon for a particular BSS
7677  * For MBSS, this updates the software template and sets "latest" to the index of the
7678  * template updated.
7679  * Otherwise, it updates the hardware template.
7680  */
7681 void wlc_bss_update_beacon(struct wlc_info *wlc, wlc_bsscfg_t *cfg)
7682 {
7683         int len = BCN_TMPL_LEN;
7684
7685         /* Clear the soft intmask */
7686         wlc->defmacintmask &= ~MI_BCNTPL;
7687
7688         if (!cfg->up) {         /* Only allow updates on an UP bss */
7689                 return;
7690         }
7691
7692         if (MBSS_BCN_ENAB(cfg)) {       /* Optimize:  Some of if/else could be combined */
7693         } else if (HWBCN_ENAB(cfg)) {   /* Hardware beaconing for this config */
7694                 u16 bcn[BCN_TMPL_LEN / 2];
7695                 u32 both_valid = MCMD_BCN0VLD | MCMD_BCN1VLD;
7696                 d11regs_t *regs = wlc->regs;
7697                 struct osl_info *osh = NULL;
7698
7699                 osh = wlc->osh;
7700
7701                 /* Check if both templates are in use, if so sched. an interrupt
7702                  *      that will call back into this routine
7703                  */
7704                 if ((R_REG(osh, &regs->maccommand) & both_valid) == both_valid) {
7705                         /* clear any previous status */
7706                         W_REG(osh, &regs->macintstatus, MI_BCNTPL);
7707                 }
7708                 /* Check that after scheduling the interrupt both of the
7709                  *      templates are still busy. if not clear the int. & remask
7710                  */
7711                 if ((R_REG(osh, &regs->maccommand) & both_valid) == both_valid) {
7712                         wlc->defmacintmask |= MI_BCNTPL;
7713                         return;
7714                 }
7715
7716                 wlc->bcn_rspec =
7717                     wlc_lowest_basic_rspec(wlc, &cfg->current_bss->rateset);
7718                 ASSERT(wlc_valid_rate
7719                        (wlc, wlc->bcn_rspec,
7720                         CHSPEC_IS2G(cfg->current_bss->
7721                                     chanspec) ? WLC_BAND_2G : WLC_BAND_5G,
7722                         true));
7723
7724                 /* update the template and ucode shm */
7725                 wlc_bcn_prb_template(wlc, FC_BEACON, wlc->bcn_rspec, cfg, bcn,
7726                                      &len);
7727                 wlc_write_hw_bcntemplates(wlc, bcn, len, false);
7728         }
7729 }
7730
7731 /*
7732  * Update all beacons for the system.
7733  */
7734 void wlc_update_beacon(struct wlc_info *wlc)
7735 {
7736         int idx;
7737         wlc_bsscfg_t *bsscfg;
7738
7739         /* update AP or IBSS beacons */
7740         FOREACH_BSS(wlc, idx, bsscfg) {
7741                 if (bsscfg->up && (BSSCFG_AP(bsscfg) || !bsscfg->BSS))
7742                         wlc_bss_update_beacon(wlc, bsscfg);
7743         }
7744 }
7745
7746 /* Write ssid into shared memory */
7747 void wlc_shm_ssid_upd(struct wlc_info *wlc, wlc_bsscfg_t *cfg)
7748 {
7749         u8 *ssidptr = cfg->SSID;
7750         u16 base = M_SSID;
7751         u8 ssidbuf[DOT11_MAX_SSID_LEN];
7752
7753         /* padding the ssid with zero and copy it into shm */
7754         memset(ssidbuf, 0, DOT11_MAX_SSID_LEN);
7755         bcopy(ssidptr, ssidbuf, cfg->SSID_len);
7756
7757         wlc_copyto_shm(wlc, base, ssidbuf, DOT11_MAX_SSID_LEN);
7758
7759         if (!MBSS_BCN_ENAB(cfg))
7760                 wlc_write_shm(wlc, M_SSIDLEN, (u16) cfg->SSID_len);
7761 }
7762
7763 void wlc_update_probe_resp(struct wlc_info *wlc, bool suspend)
7764 {
7765         int idx;
7766         wlc_bsscfg_t *bsscfg;
7767
7768         /* update AP or IBSS probe responses */
7769         FOREACH_BSS(wlc, idx, bsscfg) {
7770                 if (bsscfg->up && (BSSCFG_AP(bsscfg) || !bsscfg->BSS))
7771                         wlc_bss_update_probe_resp(wlc, bsscfg, suspend);
7772         }
7773 }
7774
7775 void
7776 wlc_bss_update_probe_resp(struct wlc_info *wlc, wlc_bsscfg_t *cfg, bool suspend)
7777 {
7778         u16 prb_resp[BCN_TMPL_LEN / 2];
7779         int len = BCN_TMPL_LEN;
7780
7781         /* write the probe response to hardware, or save in the config structure */
7782         if (!MBSS_PRB_ENAB(cfg)) {
7783
7784                 /* create the probe response template */
7785                 wlc_bcn_prb_template(wlc, FC_PROBE_RESP, 0, cfg, prb_resp,
7786                                      &len);
7787
7788                 if (suspend)
7789                         wlc_suspend_mac_and_wait(wlc);
7790
7791                 /* write the probe response into the template region */
7792                 wlc_bmac_write_template_ram(wlc->hw, T_PRS_TPL_BASE,
7793                                             (len + 3) & ~3, prb_resp);
7794
7795                 /* write the length of the probe response frame (+PLCP/-FCS) */
7796                 wlc_write_shm(wlc, M_PRB_RESP_FRM_LEN, (u16) len);
7797
7798                 /* write the SSID and SSID length */
7799                 wlc_shm_ssid_upd(wlc, cfg);
7800
7801                 /*
7802                  * Write PLCP headers and durations for probe response frames at all rates.
7803                  * Use the actual frame length covered by the PLCP header for the call to
7804                  * wlc_mod_prb_rsp_rate_table() by subtracting the PLCP len and adding the FCS.
7805                  */
7806                 len += (-D11_PHY_HDR_LEN + DOT11_FCS_LEN);
7807                 wlc_mod_prb_rsp_rate_table(wlc, (u16) len);
7808
7809                 if (suspend)
7810                         wlc_enable_mac(wlc);
7811         } else {                /* Generating probe resp in sw; update local template */
7812                 ASSERT(0 && "No software probe response support without MBSS");
7813         }
7814 }
7815
7816 /* prepares pdu for transmission. returns BCM error codes */
7817 int wlc_prep_pdu(struct wlc_info *wlc, struct sk_buff *pdu, uint *fifop)
7818 {
7819         struct osl_info *osh;
7820         uint fifo;
7821         d11txh_t *txh;
7822         struct dot11_header *h;
7823         struct scb *scb;
7824         u16 fc;
7825
7826         osh = wlc->osh;
7827
7828         ASSERT(pdu);
7829         txh = (d11txh_t *) (pdu->data);
7830         ASSERT(txh);
7831         h = (struct dot11_header *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
7832         ASSERT(h);
7833         fc = ltoh16(h->fc);
7834
7835         /* get the pkt queue info. This was put at wlc_sendctl or wlc_send for PDU */
7836         fifo = ltoh16(txh->TxFrameID) & TXFID_QUEUE_MASK;
7837
7838         scb = NULL;
7839
7840         *fifop = fifo;
7841
7842         /* return if insufficient dma resources */
7843         if (TXAVAIL(wlc, fifo) < MAX_DMA_SEGS) {
7844                 /* Mark precedences related to this FIFO, unsendable */
7845                 WLC_TX_FIFO_CLEAR(wlc, fifo);
7846                 return BCME_BUSY;
7847         }
7848
7849         if (FC_TYPE(ltoh16(txh->MacFrameControl)) != FC_TYPE_DATA)
7850                 WLCNTINCR(wlc->pub->_cnt->txctl);
7851
7852         return 0;
7853 }
7854
7855 /* init tx reported rate mechanism */
7856 void wlc_reprate_init(struct wlc_info *wlc)
7857 {
7858         int i;
7859         wlc_bsscfg_t *bsscfg;
7860
7861         FOREACH_BSS(wlc, i, bsscfg) {
7862                 wlc_bsscfg_reprate_init(bsscfg);
7863         }
7864 }
7865
7866 /* per bsscfg init tx reported rate mechanism */
7867 void wlc_bsscfg_reprate_init(wlc_bsscfg_t *bsscfg)
7868 {
7869         bsscfg->txrspecidx = 0;
7870         memset((char *)bsscfg->txrspec, 0, sizeof(bsscfg->txrspec));
7871 }
7872
7873 /* Retrieve a consolidated set of revision information,
7874  * typically for the WLC_GET_REVINFO ioctl
7875  */
7876 int wlc_get_revision_info(struct wlc_info *wlc, void *buf, uint len)
7877 {
7878         wlc_rev_info_t *rinfo = (wlc_rev_info_t *) buf;
7879
7880         if (len < WL_REV_INFO_LEGACY_LENGTH)
7881                 return BCME_BUFTOOSHORT;
7882
7883         rinfo->vendorid = wlc->vendorid;
7884         rinfo->deviceid = wlc->deviceid;
7885         rinfo->radiorev = (wlc->band->radiorev << IDCODE_REV_SHIFT) |
7886             (wlc->band->radioid << IDCODE_ID_SHIFT);
7887         rinfo->chiprev = wlc->pub->sih->chiprev;
7888         rinfo->corerev = wlc->pub->corerev;
7889         rinfo->boardid = wlc->pub->sih->boardtype;
7890         rinfo->boardvendor = wlc->pub->sih->boardvendor;
7891         rinfo->boardrev = wlc->pub->boardrev;
7892         rinfo->ucoderev = wlc->ucode_rev;
7893         rinfo->driverrev = EPI_VERSION_NUM;
7894         rinfo->bus = wlc->pub->sih->bustype;
7895         rinfo->chipnum = wlc->pub->sih->chip;
7896
7897         if (len >= (offsetof(wlc_rev_info_t, chippkg))) {
7898                 rinfo->phytype = wlc->band->phytype;
7899                 rinfo->phyrev = wlc->band->phyrev;
7900                 rinfo->anarev = 0;      /* obsolete stuff, suppress */
7901         }
7902
7903         if (len >= sizeof(*rinfo)) {
7904                 rinfo->chippkg = wlc->pub->sih->chippkg;
7905         }
7906
7907         return BCME_OK;
7908 }
7909
7910 void wlc_default_rateset(struct wlc_info *wlc, wlc_rateset_t *rs)
7911 {
7912         wlc_rateset_default(rs, NULL, wlc->band->phytype, wlc->band->bandtype,
7913                             false, RATE_MASK_FULL, (bool) N_ENAB(wlc->pub),
7914                             CHSPEC_WLC_BW(wlc->default_bss->chanspec),
7915                             wlc->stf->txstreams);
7916 }
7917
7918 static void wlc_bss_default_init(struct wlc_info *wlc)
7919 {
7920         chanspec_t chanspec;
7921         struct wlcband *band;
7922         wlc_bss_info_t *bi = wlc->default_bss;
7923
7924         /* init default and target BSS with some sane initial values */
7925         memset((char *)(bi), 0, sizeof(wlc_bss_info_t));
7926         bi->beacon_period = ISSIM_ENAB(wlc->pub->sih) ? BEACON_INTERVAL_DEF_QT :
7927             BEACON_INTERVAL_DEFAULT;
7928         bi->dtim_period = ISSIM_ENAB(wlc->pub->sih) ? DTIM_INTERVAL_DEF_QT :
7929             DTIM_INTERVAL_DEFAULT;
7930
7931         /* fill the default channel as the first valid channel
7932          * starting from the 2G channels
7933          */
7934         chanspec = CH20MHZ_CHSPEC(1);
7935         ASSERT(chanspec != INVCHANSPEC);
7936
7937         wlc->home_chanspec = bi->chanspec = chanspec;
7938
7939         /* find the band of our default channel */
7940         band = wlc->band;
7941         if (NBANDS(wlc) > 1 && band->bandunit != CHSPEC_WLCBANDUNIT(chanspec))
7942                 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
7943
7944         /* init bss rates to the band specific default rate set */
7945         wlc_rateset_default(&bi->rateset, NULL, band->phytype, band->bandtype,
7946                             false, RATE_MASK_FULL, (bool) N_ENAB(wlc->pub),
7947                             CHSPEC_WLC_BW(chanspec), wlc->stf->txstreams);
7948
7949         if (N_ENAB(wlc->pub))
7950                 bi->flags |= WLC_BSS_HT;
7951 }
7952
7953 /* Deferred event processing */
7954 static void wlc_process_eventq(void *arg)
7955 {
7956         struct wlc_info *wlc = (struct wlc_info *) arg;
7957         wlc_event_t *etmp;
7958
7959         while ((etmp = wlc_eventq_deq(wlc->eventq))) {
7960                 /* Perform OS specific event processing */
7961                 wl_event(wlc->wl, etmp->event.ifname, etmp);
7962                 if (etmp->data) {
7963                         kfree(etmp->data);
7964                         etmp->data = NULL;
7965                 }
7966                 wlc_event_free(wlc->eventq, etmp);
7967         }
7968 }
7969
7970 void
7971 wlc_uint64_sub(u32 *a_high, u32 *a_low, u32 b_high, u32 b_low)
7972 {
7973         if (b_low > *a_low) {
7974                 /* low half needs a carry */
7975                 b_high += 1;
7976         }
7977         *a_low -= b_low;
7978         *a_high -= b_high;
7979 }
7980
7981 static ratespec_t
7982 mac80211_wlc_set_nrate(struct wlc_info *wlc, struct wlcband *cur_band,
7983                        u32 int_val)
7984 {
7985         u8 stf = (int_val & NRATE_STF_MASK) >> NRATE_STF_SHIFT;
7986         u8 rate = int_val & NRATE_RATE_MASK;
7987         ratespec_t rspec;
7988         bool ismcs = ((int_val & NRATE_MCS_INUSE) == NRATE_MCS_INUSE);
7989         bool issgi = ((int_val & NRATE_SGI_MASK) >> NRATE_SGI_SHIFT);
7990         bool override_mcs_only = ((int_val & NRATE_OVERRIDE_MCS_ONLY)
7991                                   == NRATE_OVERRIDE_MCS_ONLY);
7992         int bcmerror = 0;
7993
7994         if (!ismcs) {
7995                 return (ratespec_t) rate;
7996         }
7997
7998         /* validate the combination of rate/mcs/stf is allowed */
7999         if (N_ENAB(wlc->pub) && ismcs) {
8000                 /* mcs only allowed when nmode */
8001                 if (stf > PHY_TXC1_MODE_SDM) {
8002                         WL_ERROR("wl%d: %s: Invalid stf\n",
8003                                  WLCWLUNIT(wlc), __func__);
8004                         bcmerror = BCME_RANGE;
8005                         goto done;
8006                 }
8007
8008                 /* mcs 32 is a special case, DUP mode 40 only */
8009                 if (rate == 32) {
8010                         if (!CHSPEC_IS40(wlc->home_chanspec) ||
8011                             ((stf != PHY_TXC1_MODE_SISO)
8012                              && (stf != PHY_TXC1_MODE_CDD))) {
8013                                 WL_ERROR("wl%d: %s: Invalid mcs 32\n",
8014                                          WLCWLUNIT(wlc), __func__);
8015                                 bcmerror = BCME_RANGE;
8016                                 goto done;
8017                         }
8018                         /* mcs > 7 must use stf SDM */
8019                 } else if (rate > HIGHEST_SINGLE_STREAM_MCS) {
8020                         /* mcs > 7 must use stf SDM */
8021                         if (stf != PHY_TXC1_MODE_SDM) {
8022                                 WL_TRACE("wl%d: %s: enabling SDM mode for mcs %d\n",
8023                                          WLCWLUNIT(wlc), __func__, rate);
8024                                 stf = PHY_TXC1_MODE_SDM;
8025                         }
8026                 } else {
8027                         /* MCS 0-7 may use SISO, CDD, and for phy_rev >= 3 STBC */
8028                         if ((stf > PHY_TXC1_MODE_STBC) ||
8029                             (!WLC_STBC_CAP_PHY(wlc)
8030                              && (stf == PHY_TXC1_MODE_STBC))) {
8031                                 WL_ERROR("wl%d: %s: Invalid STBC\n",
8032                                          WLCWLUNIT(wlc), __func__);
8033                                 bcmerror = BCME_RANGE;
8034                                 goto done;
8035                         }
8036                 }
8037         } else if (IS_OFDM(rate)) {
8038                 if ((stf != PHY_TXC1_MODE_CDD) && (stf != PHY_TXC1_MODE_SISO)) {
8039                         WL_ERROR("wl%d: %s: Invalid OFDM\n",
8040                                  WLCWLUNIT(wlc), __func__);
8041                         bcmerror = BCME_RANGE;
8042                         goto done;
8043                 }
8044         } else if (IS_CCK(rate)) {
8045                 if ((cur_band->bandtype != WLC_BAND_2G)
8046                     || (stf != PHY_TXC1_MODE_SISO)) {
8047                         WL_ERROR("wl%d: %s: Invalid CCK\n",
8048                                  WLCWLUNIT(wlc), __func__);
8049                         bcmerror = BCME_RANGE;
8050                         goto done;
8051                 }
8052         } else {
8053                 WL_ERROR("wl%d: %s: Unknown rate type\n",
8054                          WLCWLUNIT(wlc), __func__);
8055                 bcmerror = BCME_RANGE;
8056                 goto done;
8057         }
8058         /* make sure multiple antennae are available for non-siso rates */
8059         if ((stf != PHY_TXC1_MODE_SISO) && (wlc->stf->txstreams == 1)) {
8060                 WL_ERROR("wl%d: %s: SISO antenna but !SISO request\n",
8061                          WLCWLUNIT(wlc), __func__);
8062                 bcmerror = BCME_RANGE;
8063                 goto done;
8064         }
8065
8066         rspec = rate;
8067         if (ismcs) {
8068                 rspec |= RSPEC_MIMORATE;
8069                 /* For STBC populate the STC field of the ratespec */
8070                 if (stf == PHY_TXC1_MODE_STBC) {
8071                         u8 stc;
8072                         stc = 1;        /* Nss for single stream is always 1 */
8073                         rspec |= (stc << RSPEC_STC_SHIFT);
8074                 }
8075         }
8076
8077         rspec |= (stf << RSPEC_STF_SHIFT);
8078
8079         if (override_mcs_only)
8080                 rspec |= RSPEC_OVERRIDE_MCS_ONLY;
8081
8082         if (issgi)
8083                 rspec |= RSPEC_SHORT_GI;
8084
8085         if ((rate != 0)
8086             && !wlc_valid_rate(wlc, rspec, cur_band->bandtype, true)) {
8087                 return rate;
8088         }
8089
8090         return rspec;
8091  done:
8092         WL_ERROR("Hoark\n");
8093         return rate;
8094 }
8095
8096 /* formula:  IDLE_BUSY_RATIO_X_16 = (100-duty_cycle)/duty_cycle*16 */
8097 static int
8098 wlc_duty_cycle_set(struct wlc_info *wlc, int duty_cycle, bool isOFDM,
8099                    bool writeToShm)
8100 {
8101         int idle_busy_ratio_x_16 = 0;
8102         uint offset =
8103             isOFDM ? M_TX_IDLE_BUSY_RATIO_X_16_OFDM :
8104             M_TX_IDLE_BUSY_RATIO_X_16_CCK;
8105         if (duty_cycle > 100 || duty_cycle < 0) {
8106                 WL_ERROR("wl%d:  duty cycle value off limit\n", wlc->pub->unit);
8107                 return BCME_RANGE;
8108         }
8109         if (duty_cycle)
8110                 idle_busy_ratio_x_16 = (100 - duty_cycle) * 16 / duty_cycle;
8111         /* Only write to shared memory  when wl is up */
8112         if (writeToShm)
8113                 wlc_write_shm(wlc, offset, (u16) idle_busy_ratio_x_16);
8114
8115         if (isOFDM)
8116                 wlc->tx_duty_cycle_ofdm = (u16) duty_cycle;
8117         else
8118                 wlc->tx_duty_cycle_cck = (u16) duty_cycle;
8119
8120         return BCME_OK;
8121 }
8122
8123 /* Read a single u16 from shared memory.
8124  * SHM 'offset' needs to be an even address
8125  */
8126 u16 wlc_read_shm(struct wlc_info *wlc, uint offset)
8127 {
8128         return wlc_bmac_read_shm(wlc->hw, offset);
8129 }
8130
8131 /* Write a single u16 to shared memory.
8132  * SHM 'offset' needs to be an even address
8133  */
8134 void wlc_write_shm(struct wlc_info *wlc, uint offset, u16 v)
8135 {
8136         wlc_bmac_write_shm(wlc->hw, offset, v);
8137 }
8138
8139 /* Set a range of shared memory to a value.
8140  * SHM 'offset' needs to be an even address and
8141  * Range length 'len' must be an even number of bytes
8142  */
8143 void wlc_set_shm(struct wlc_info *wlc, uint offset, u16 v, int len)
8144 {
8145         /* offset and len need to be even */
8146         ASSERT((offset & 1) == 0);
8147         ASSERT((len & 1) == 0);
8148
8149         if (len <= 0)
8150                 return;
8151
8152         wlc_bmac_set_shm(wlc->hw, offset, v, len);
8153 }
8154
8155 /* Copy a buffer to shared memory.
8156  * SHM 'offset' needs to be an even address and
8157  * Buffer length 'len' must be an even number of bytes
8158  */
8159 void wlc_copyto_shm(struct wlc_info *wlc, uint offset, const void *buf, int len)
8160 {
8161         /* offset and len need to be even */
8162         ASSERT((offset & 1) == 0);
8163         ASSERT((len & 1) == 0);
8164
8165         if (len <= 0)
8166                 return;
8167         wlc_bmac_copyto_objmem(wlc->hw, offset, buf, len, OBJADDR_SHM_SEL);
8168
8169 }
8170
8171 /* Copy from shared memory to a buffer.
8172  * SHM 'offset' needs to be an even address and
8173  * Buffer length 'len' must be an even number of bytes
8174  */
8175 void wlc_copyfrom_shm(struct wlc_info *wlc, uint offset, void *buf, int len)
8176 {
8177         /* offset and len need to be even */
8178         ASSERT((offset & 1) == 0);
8179         ASSERT((len & 1) == 0);
8180
8181         if (len <= 0)
8182                 return;
8183
8184         wlc_bmac_copyfrom_objmem(wlc->hw, offset, buf, len, OBJADDR_SHM_SEL);
8185 }
8186
8187 /* wrapper BMAC functions to for HIGH driver access */
8188 void wlc_mctrl(struct wlc_info *wlc, u32 mask, u32 val)
8189 {
8190         wlc_bmac_mctrl(wlc->hw, mask, val);
8191 }
8192
8193 void wlc_corereset(struct wlc_info *wlc, u32 flags)
8194 {
8195         wlc_bmac_corereset(wlc->hw, flags);
8196 }
8197
8198 void wlc_mhf(struct wlc_info *wlc, u8 idx, u16 mask, u16 val, int bands)
8199 {
8200         wlc_bmac_mhf(wlc->hw, idx, mask, val, bands);
8201 }
8202
8203 u16 wlc_mhf_get(struct wlc_info *wlc, u8 idx, int bands)
8204 {
8205         return wlc_bmac_mhf_get(wlc->hw, idx, bands);
8206 }
8207
8208 int wlc_xmtfifo_sz_get(struct wlc_info *wlc, uint fifo, uint *blocks)
8209 {
8210         return wlc_bmac_xmtfifo_sz_get(wlc->hw, fifo, blocks);
8211 }
8212
8213 void wlc_write_template_ram(struct wlc_info *wlc, int offset, int len,
8214                             void *buf)
8215 {
8216         wlc_bmac_write_template_ram(wlc->hw, offset, len, buf);
8217 }
8218
8219 void wlc_write_hw_bcntemplates(struct wlc_info *wlc, void *bcn, int len,
8220                                bool both)
8221 {
8222         wlc_bmac_write_hw_bcntemplates(wlc->hw, bcn, len, both);
8223 }
8224
8225 void
8226 wlc_set_addrmatch(struct wlc_info *wlc, int match_reg_offset,
8227                   const struct ether_addr *addr)
8228 {
8229         wlc_bmac_set_addrmatch(wlc->hw, match_reg_offset, addr);
8230 }
8231
8232 void wlc_set_rcmta(struct wlc_info *wlc, int idx, const struct ether_addr *addr)
8233 {
8234         wlc_bmac_set_rcmta(wlc->hw, idx, addr);
8235 }
8236
8237 void wlc_read_tsf(struct wlc_info *wlc, u32 *tsf_l_ptr, u32 *tsf_h_ptr)
8238 {
8239         wlc_bmac_read_tsf(wlc->hw, tsf_l_ptr, tsf_h_ptr);
8240 }
8241
8242 void wlc_set_cwmin(struct wlc_info *wlc, u16 newmin)
8243 {
8244         wlc->band->CWmin = newmin;
8245         wlc_bmac_set_cwmin(wlc->hw, newmin);
8246 }
8247
8248 void wlc_set_cwmax(struct wlc_info *wlc, u16 newmax)
8249 {
8250         wlc->band->CWmax = newmax;
8251         wlc_bmac_set_cwmax(wlc->hw, newmax);
8252 }
8253
8254 void wlc_fifoerrors(struct wlc_info *wlc)
8255 {
8256
8257         wlc_bmac_fifoerrors(wlc->hw);
8258 }
8259
8260 /* Search mem rw utilities */
8261
8262 void wlc_pllreq(struct wlc_info *wlc, bool set, mbool req_bit)
8263 {
8264         wlc_bmac_pllreq(wlc->hw, set, req_bit);
8265 }
8266
8267 void wlc_reset_bmac_done(struct wlc_info *wlc)
8268 {
8269 }
8270
8271 void wlc_ht_mimops_cap_update(struct wlc_info *wlc, u8 mimops_mode)
8272 {
8273         wlc->ht_cap.cap &= ~HT_CAP_MIMO_PS_MASK;
8274         wlc->ht_cap.cap |= (mimops_mode << HT_CAP_MIMO_PS_SHIFT);
8275
8276         if (AP_ENAB(wlc->pub) && wlc->clk) {
8277                 wlc_update_beacon(wlc);
8278                 wlc_update_probe_resp(wlc, true);
8279         }
8280 }
8281
8282 /* check for the particular priority flow control bit being set */
8283 bool
8284 wlc_txflowcontrol_prio_isset(struct wlc_info *wlc, wlc_txq_info_t *q, int prio)
8285 {
8286         uint prio_mask;
8287
8288         if (prio == ALLPRIO) {
8289                 prio_mask = TXQ_STOP_FOR_PRIOFC_MASK;
8290         } else {
8291                 ASSERT(prio >= 0 && prio <= MAXPRIO);
8292                 prio_mask = NBITVAL(prio);
8293         }
8294
8295         return (q->stopped & prio_mask) == prio_mask;
8296 }
8297
8298 /* propogate the flow control to all interfaces using the given tx queue */
8299 void wlc_txflowcontrol(struct wlc_info *wlc, wlc_txq_info_t *qi,
8300                        bool on, int prio)
8301 {
8302         uint prio_bits;
8303         uint cur_bits;
8304
8305         WL_ERROR("%s: flow control kicks in\n", __func__);
8306
8307         if (prio == ALLPRIO) {
8308                 prio_bits = TXQ_STOP_FOR_PRIOFC_MASK;
8309         } else {
8310                 ASSERT(prio >= 0 && prio <= MAXPRIO);
8311                 prio_bits = NBITVAL(prio);
8312         }
8313
8314         cur_bits = qi->stopped & prio_bits;
8315
8316         /* Check for the case of no change and return early
8317          * Otherwise update the bit and continue
8318          */
8319         if (on) {
8320                 if (cur_bits == prio_bits) {
8321                         return;
8322                 }
8323                 mboolset(qi->stopped, prio_bits);
8324         } else {
8325                 if (cur_bits == 0) {
8326                         return;
8327                 }
8328                 mboolclr(qi->stopped, prio_bits);
8329         }
8330
8331         /* If there is a flow control override we will not change the external
8332          * flow control state.
8333          */
8334         if (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK) {
8335                 return;
8336         }
8337
8338         wlc_txflowcontrol_signal(wlc, qi, on, prio);
8339 }
8340
8341 void
8342 wlc_txflowcontrol_override(struct wlc_info *wlc, wlc_txq_info_t *qi, bool on,
8343                            uint override)
8344 {
8345         uint prev_override;
8346
8347         ASSERT(override != 0);
8348         ASSERT((override & TXQ_STOP_FOR_PRIOFC_MASK) == 0);
8349
8350         prev_override = (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK);
8351
8352         /* Update the flow control bits and do an early return if there is
8353          * no change in the external flow control state.
8354          */
8355         if (on) {
8356                 mboolset(qi->stopped, override);
8357                 /* if there was a previous override bit on, then setting this
8358                  * makes no difference.
8359                  */
8360                 if (prev_override) {
8361                         return;
8362                 }
8363
8364                 wlc_txflowcontrol_signal(wlc, qi, ON, ALLPRIO);
8365         } else {
8366                 mboolclr(qi->stopped, override);
8367                 /* clearing an override bit will only make a difference for
8368                  * flow control if it was the only bit set. For any other
8369                  * override setting, just return
8370                  */
8371                 if (prev_override != override) {
8372                         return;
8373                 }
8374
8375                 if (qi->stopped == 0) {
8376                         wlc_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
8377                 } else {
8378                         int prio;
8379
8380                         for (prio = MAXPRIO; prio >= 0; prio--) {
8381                                 if (!mboolisset(qi->stopped, NBITVAL(prio)))
8382                                         wlc_txflowcontrol_signal(wlc, qi, OFF,
8383                                                                  prio);
8384                         }
8385                 }
8386         }
8387 }
8388
8389 static void wlc_txflowcontrol_reset(struct wlc_info *wlc)
8390 {
8391         wlc_txq_info_t *qi;
8392
8393         for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
8394                 if (qi->stopped) {
8395                         wlc_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
8396                         qi->stopped = 0;
8397                 }
8398         }
8399 }
8400
8401 static void
8402 wlc_txflowcontrol_signal(struct wlc_info *wlc, wlc_txq_info_t *qi, bool on,
8403                          int prio)
8404 {
8405         struct wlc_if *wlcif;
8406
8407         for (wlcif = wlc->wlcif_list; wlcif != NULL; wlcif = wlcif->next) {
8408                 if (wlcif->qi == qi && wlcif->flags & WLC_IF_LINKED)
8409                         wl_txflowcontrol(wlc->wl, wlcif->wlif, on, prio);
8410         }
8411 }
8412
8413 static wlc_txq_info_t *wlc_txq_alloc(struct wlc_info *wlc, struct osl_info *osh)
8414 {
8415         wlc_txq_info_t *qi, *p;
8416
8417         qi = (wlc_txq_info_t *) wlc_calloc(osh, wlc->pub->unit,
8418                                            sizeof(wlc_txq_info_t));
8419         if (qi == NULL) {
8420                 return NULL;
8421         }
8422
8423         /* Have enough room for control packets along with HI watermark */
8424         /* Also, add room to txq for total psq packets if all the SCBs leave PS mode */
8425         /* The watermark for flowcontrol to OS packets will remain the same */
8426         pktq_init(&qi->q, WLC_PREC_COUNT,
8427                   (2 * wlc->pub->tunables->datahiwat) + PKTQ_LEN_DEFAULT +
8428                   wlc->pub->psq_pkts_total);
8429
8430         /* add this queue to the the global list */
8431         p = wlc->tx_queues;
8432         if (p == NULL) {
8433                 wlc->tx_queues = qi;
8434         } else {
8435                 while (p->next != NULL)
8436                         p = p->next;
8437                 p->next = qi;
8438         }
8439
8440         return qi;
8441 }
8442
8443 static void wlc_txq_free(struct wlc_info *wlc, struct osl_info *osh,
8444                          wlc_txq_info_t *qi)
8445 {
8446         wlc_txq_info_t *p;
8447
8448         if (qi == NULL)
8449                 return;
8450
8451         /* remove the queue from the linked list */
8452         p = wlc->tx_queues;
8453         if (p == qi)
8454                 wlc->tx_queues = p->next;
8455         else {
8456                 while (p != NULL && p->next != qi)
8457                         p = p->next;
8458                 ASSERT(p->next == qi);
8459                 if (p != NULL)
8460                         p->next = p->next->next;
8461         }
8462
8463         kfree(qi);
8464 }