drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.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
  17 #define __UNDEF_NO_VERSION__
  18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  19
  20 #include <linux/etherdevice.h>
  21 #include <linux/sched.h>
  22 #include <linux/firmware.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/module.h>
  25 #include <linux/bcma/bcma.h>
  26 #include <net/mac80211.h>
  27 #include <defs.h>
  28 #include "nicpci.h"
  29 #include "phy/phy_int.h"
  30 #include "d11.h"
  31 #include "channel.h"
  32 #include "scb.h"
  33 #include "pub.h"
  34 #include "ucode_loader.h"
  35 #include "mac80211_if.h"
  36 #include "main.h"
  37
  38 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  39
  40 /* Flags we support */
  41 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  42         FIF_ALLMULTI | \
  43         FIF_FCSFAIL | \
  44         FIF_CONTROL | \
  45         FIF_OTHER_BSS | \
  46         FIF_BCN_PRBRESP_PROMISC | \
  47         FIF_PSPOLL)
  48
  49 #define CHAN2GHZ(channel, freqency, chflags)  { \
  50         .band = IEEE80211_BAND_2GHZ, \
  51         .center_freq = (freqency), \
  52         .hw_value = (channel), \
  53         .flags = chflags, \
  54         .max_antenna_gain = 0, \
  55         .max_power = 19, \
  56 }
  57
  58 #define CHAN5GHZ(channel, chflags)  { \
  59         .band = IEEE80211_BAND_5GHZ, \
  60         .center_freq = 5000 + 5*(channel), \
  61         .hw_value = (channel), \
  62         .flags = chflags, \
  63         .max_antenna_gain = 0, \
  64         .max_power = 21, \
  65 }
  66
  67 #define RATE(rate100m, _flags) { \
  68         .bitrate = (rate100m), \
  69         .flags = (_flags), \
  70         .hw_value = (rate100m / 5), \
  71 }
  72
  73 struct firmware_hdr {
  74         __le32 offset;
  75         __le32 len;
  76         __le32 idx;
  77 };
  78
  79 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  80         "brcm/bcm43xx",
  81         NULL
  82 };
  83
  84 static int n_adapters_found;
  85
  86 MODULE_AUTHOR("Broadcom Corporation");
  87 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  88 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  89 MODULE_LICENSE("Dual BSD/GPL");
  90
  91
  92 /* recognized BCMA Core IDs */
  93 static struct bcma_device_id brcms_coreid_table[] = {
  94         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  95         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
  96         BCMA_CORETABLE_END
  97 };
  98 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
  99
 100 #ifdef DEBUG
 101 static int msglevel = 0xdeadbeef;
 102 module_param(msglevel, int, 0);
 103 #endif                          /* DEBUG */
 104
 105 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 106         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 107         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 110         CHAN2GHZ(5, 2432, 0),
 111         CHAN2GHZ(6, 2437, 0),
 112         CHAN2GHZ(7, 2442, 0),
 113         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 114         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 117         CHAN2GHZ(12, 2467,
 118                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 119                  IEEE80211_CHAN_NO_HT40PLUS),
 120         CHAN2GHZ(13, 2472,
 121                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 122                  IEEE80211_CHAN_NO_HT40PLUS),
 123         CHAN2GHZ(14, 2484,
 124                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 125                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 126 };
 127
 128 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 129         /* UNII-1 */
 130         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 131         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 132         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 133         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 134         /* UNII-2 */
 135         CHAN5GHZ(52,
 136                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 137                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 138         CHAN5GHZ(56,
 139                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 140                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 141         CHAN5GHZ(60,
 142                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 143                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 144         CHAN5GHZ(64,
 145                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 146                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 147         /* MID */
 148         CHAN5GHZ(100,
 149                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 150                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 151         CHAN5GHZ(104,
 152                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 153                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 154         CHAN5GHZ(108,
 155                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 156                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 157         CHAN5GHZ(112,
 158                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 159                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 160         CHAN5GHZ(116,
 161                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 162                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 163         CHAN5GHZ(120,
 164                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 165                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 166         CHAN5GHZ(124,
 167                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 168                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 169         CHAN5GHZ(128,
 170                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 171                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 172         CHAN5GHZ(132,
 173                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 174                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 175         CHAN5GHZ(136,
 176                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 177                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 178         CHAN5GHZ(140,
 179                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 180                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 181                  IEEE80211_CHAN_NO_HT40MINUS),
 182         /* UNII-3 */
 183         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 184         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 185         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 186         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 188 };
 189
 190 /*
 191  * The rate table is used for both 2.4G and 5G rates. The
 192  * latter being a subset as it does not support CCK rates.
 193  */
 194 static struct ieee80211_rate legacy_ratetable[] = {
 195         RATE(10, 0),
 196         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 197         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 198         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 199         RATE(60, 0),
 200         RATE(90, 0),
 201         RATE(120, 0),
 202         RATE(180, 0),
 203         RATE(240, 0),
 204         RATE(360, 0),
 205         RATE(480, 0),
 206         RATE(540, 0),
 207 };
 208
 209 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 210         .band = IEEE80211_BAND_2GHZ,
 211         .channels = brcms_2ghz_chantable,
 212         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 213         .bitrates = legacy_ratetable,
 214         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 215         .ht_cap = {
 216                    /* from include/linux/ieee80211.h */
 217                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 218                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 219                    .ht_supported = true,
 220                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 221                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 222                    .mcs = {
 223                            /* placeholders for now */
 224                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 225                            .rx_highest = cpu_to_le16(500),
 226                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 227                    }
 228 };
 229
 230 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 231         .band = IEEE80211_BAND_5GHZ,
 232         .channels = brcms_5ghz_nphy_chantable,
 233         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 234         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 235         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 236                         BRCMS_LEGACY_5G_RATE_OFFSET,
 237         .ht_cap = {
 238                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 239                           IEEE80211_HT_CAP_SGI_40,
 240                    .ht_supported = true,
 241                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 242                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 243                    .mcs = {
 244                            /* placeholders for now */
 245                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 246                            .rx_highest = cpu_to_le16(500),
 247                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 248                    }
 249 };
 250
 251 /* flags the given rate in rateset as requested */
 252 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 253 {
 254         u32 i;
 255
 256         for (i = 0; i < rs->count; i++) {
 257                 if (rate != (rs->rates[i] & 0x7f))
 258                         continue;
 259
 260                 if (is_br)
 261                         rs->rates[i] |= BRCMS_RATE_FLAG;
 262                 else
 263                         rs->rates[i] &= BRCMS_RATE_MASK;
 264                 return;
 265         }
 266 }
 267
 268 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 269 {
 270         struct brcms_info *wl = hw->priv;
 271
 272         spin_lock_bh(&wl->lock);
 273         if (!wl->pub->up) {
 274                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 275                 kfree_skb(skb);
 276                 goto done;
 277         }
 278         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 279  done:
 280         spin_unlock_bh(&wl->lock);
 281 }
 282
 283 static int brcms_ops_start(struct ieee80211_hw *hw)
 284 {
 285         struct brcms_info *wl = hw->priv;
 286         bool blocked;
 287         int err;
 288
 289         ieee80211_wake_queues(hw);
 290         spin_lock_bh(&wl->lock);
 291         blocked = brcms_rfkill_set_hw_state(wl);
 292         spin_unlock_bh(&wl->lock);
 293         if (!blocked)
 294                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 295
 296         spin_lock_bh(&wl->lock);
 297         /* avoid acknowledging frames before a non-monitor device is added */
 298         wl->mute_tx = true;
 299
 300         if (!wl->pub->up)
 301                 err = brcms_up(wl);
 302         else
 303                 err = -ENODEV;
 304         spin_unlock_bh(&wl->lock);
 305
 306         if (err != 0)
 307                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 308                           err);
 309         return err;
 310 }
 311
 312 static void brcms_ops_stop(struct ieee80211_hw *hw)
 313 {
 314         struct brcms_info *wl = hw->priv;
 315         int status;
 316
 317         ieee80211_stop_queues(hw);
 318
 319         if (wl->wlc == NULL)
 320                 return;
 321
 322         spin_lock_bh(&wl->lock);
 323         status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
 324                                    wl->wlc->hw->deviceid);
 325         spin_unlock_bh(&wl->lock);
 326         if (!status) {
 327                 wiphy_err(wl->wiphy,
 328                           "wl: brcms_ops_stop: chipmatch failed\n");
 329                 return;
 330         }
 331
 332         /* put driver in down state */
 333         spin_lock_bh(&wl->lock);
 334         brcms_down(wl);
 335         spin_unlock_bh(&wl->lock);
 336 }
 337
 338 static int
 339 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 340 {
 341         struct brcms_info *wl = hw->priv;
 342
 343         /* Just STA for now */
 344         if (vif->type != NL80211_IFTYPE_STATION) {
 345                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 346                           " STA for now\n", __func__, vif->type);
 347                 return -EOPNOTSUPP;
 348         }
 349
 350         wl->mute_tx = false;
 351         brcms_c_mute(wl->wlc, false);
 352
 353         return 0;
 354 }
 355
 356 static void
 357 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 358 {
 359 }
 360
 361 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 362 {
 363         struct ieee80211_conf *conf = &hw->conf;
 364         struct brcms_info *wl = hw->priv;
 365         int err = 0;
 366         int new_int;
 367         struct wiphy *wiphy = hw->wiphy;
 368
 369         spin_lock_bh(&wl->lock);
 370         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 371                 brcms_c_set_beacon_listen_interval(wl->wlc,
 372                                                    conf->listen_interval);
 373         }
 374         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 375                 wiphy_dbg(wiphy, "%s: change monitor mode: %s\n",
 376                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 377                           "true" : "false");
 378         if (changed & IEEE80211_CONF_CHANGE_PS)
 379                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 380                           __func__, conf->flags & IEEE80211_CONF_PS ?
 381                           "true" : "false");
 382
 383         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 384                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 385                 if (err < 0) {
 386                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 387                                   __func__);
 388                         goto config_out;
 389                 }
 390                 new_int = brcms_c_get_tx_power(wl->wlc);
 391                 if (new_int != conf->power_level)
 392                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 393                                   "\n", __func__, conf->power_level,
 394                                   new_int);
 395         }
 396         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 397                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 398                     conf->channel_type == NL80211_CHAN_NO_HT)
 399                         err = brcms_c_set_channel(wl->wlc,
 400                                                   conf->channel->hw_value);
 401                 else
 402                         err = -ENOTSUPP;
 403         }
 404         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 405                 err = brcms_c_set_rate_limit(wl->wlc,
 406                                              conf->short_frame_max_tx_count,
 407                                              conf->long_frame_max_tx_count);
 408
 409  config_out:
 410         spin_unlock_bh(&wl->lock);
 411         return err;
 412 }
 413
 414 static void
 415 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 416                         struct ieee80211_vif *vif,
 417                         struct ieee80211_bss_conf *info, u32 changed)
 418 {
 419         struct brcms_info *wl = hw->priv;
 420         struct wiphy *wiphy = hw->wiphy;
 421
 422         if (changed & BSS_CHANGED_ASSOC) {
 423                 /* association status changed (associated/disassociated)
 424                  * also implies a change in the AID.
 425                  */
 426                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 427                           __func__, info->assoc ? "" : "dis");
 428                 spin_lock_bh(&wl->lock);
 429                 brcms_c_associate_upd(wl->wlc, info->assoc);
 430                 spin_unlock_bh(&wl->lock);
 431         }
 432         if (changed & BSS_CHANGED_ERP_SLOT) {
 433                 s8 val;
 434
 435                 /* slot timing changed */
 436                 if (info->use_short_slot)
 437                         val = 1;
 438                 else
 439                         val = 0;
 440                 spin_lock_bh(&wl->lock);
 441                 brcms_c_set_shortslot_override(wl->wlc, val);
 442                 spin_unlock_bh(&wl->lock);
 443         }
 444
 445         if (changed & BSS_CHANGED_HT) {
 446                 /* 802.11n parameters changed */
 447                 u16 mode = info->ht_operation_mode;
 448
 449                 spin_lock_bh(&wl->lock);
 450                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 451                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 452                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 453                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 454                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 455                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 456                 spin_unlock_bh(&wl->lock);
 457         }
 458         if (changed & BSS_CHANGED_BASIC_RATES) {
 459                 struct ieee80211_supported_band *bi;
 460                 u32 br_mask, i;
 461                 u16 rate;
 462                 struct brcm_rateset rs;
 463                 int error;
 464
 465                 /* retrieve the current rates */
 466                 spin_lock_bh(&wl->lock);
 467                 brcms_c_get_current_rateset(wl->wlc, &rs);
 468                 spin_unlock_bh(&wl->lock);
 469
 470                 br_mask = info->basic_rates;
 471                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 472                 for (i = 0; i < bi->n_bitrates; i++) {
 473                         /* convert to internal rate value */
 474                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 475
 476                         /* set/clear basic rate flag */
 477                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 478                         br_mask >>= 1;
 479                 }
 480
 481                 /* update the rate set */
 482                 spin_lock_bh(&wl->lock);
 483                 error = brcms_c_set_rateset(wl->wlc, &rs);
 484                 spin_unlock_bh(&wl->lock);
 485                 if (error)
 486                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 487                                   error);
 488         }
 489         if (changed & BSS_CHANGED_BEACON_INT) {
 490                 /* Beacon interval changed */
 491                 spin_lock_bh(&wl->lock);
 492                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 493                 spin_unlock_bh(&wl->lock);
 494         }
 495         if (changed & BSS_CHANGED_BSSID) {
 496                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 497                 spin_lock_bh(&wl->lock);
 498                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 499                 spin_unlock_bh(&wl->lock);
 500         }
 501         if (changed & BSS_CHANGED_BEACON)
 502                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 503                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 504
 505         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 506                 /* Beaconing should be enabled/disabled (beaconing modes) */
 507                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 508                           info->enable_beacon ? "true" : "false");
 509         }
 510
 511         if (changed & BSS_CHANGED_CQM) {
 512                 /* Connection quality monitor config changed */
 513                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 514                           " (implement)\n", __func__, info->cqm_rssi_thold,
 515                           info->cqm_rssi_hyst);
 516         }
 517
 518         if (changed & BSS_CHANGED_IBSS) {
 519                 /* IBSS join status changed */
 520                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 521                           info->ibss_joined ? "true" : "false");
 522         }
 523
 524         if (changed & BSS_CHANGED_ARP_FILTER) {
 525                 /* Hardware ARP filter address list or state changed */
 526                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 527                           " (implement)\n", __func__, info->arp_filter_enabled ?
 528                           "true" : "false", info->arp_addr_cnt);
 529         }
 530
 531         if (changed & BSS_CHANGED_QOS) {
 532                 /*
 533                  * QoS for this association was enabled/disabled.
 534                  * Note that it is only ever disabled for station mode.
 535                  */
 536                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 537                           info->qos ? "true" : "false");
 538         }
 539         return;
 540 }
 541
 542 static void
 543 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 544                         unsigned int changed_flags,
 545                         unsigned int *total_flags, u64 multicast)
 546 {
 547         struct brcms_info *wl = hw->priv;
 548         struct wiphy *wiphy = hw->wiphy;
 549
 550         changed_flags &= MAC_FILTERS;
 551         *total_flags &= MAC_FILTERS;
 552
 553         if (changed_flags & FIF_PROMISC_IN_BSS)
 554                 wiphy_dbg(wiphy, "FIF_PROMISC_IN_BSS\n");
 555         if (changed_flags & FIF_ALLMULTI)
 556                 wiphy_dbg(wiphy, "FIF_ALLMULTI\n");
 557         if (changed_flags & FIF_FCSFAIL)
 558                 wiphy_dbg(wiphy, "FIF_FCSFAIL\n");
 559         if (changed_flags & FIF_CONTROL)
 560                 wiphy_dbg(wiphy, "FIF_CONTROL\n");
 561         if (changed_flags & FIF_OTHER_BSS)
 562                 wiphy_dbg(wiphy, "FIF_OTHER_BSS\n");
 563         if (changed_flags & FIF_PSPOLL)
 564                 wiphy_dbg(wiphy, "FIF_PSPOLL\n");
 565         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 566                 wiphy_dbg(wiphy, "FIF_BCN_PRBRESP_PROMISC\n");
 567
 568         spin_lock_bh(&wl->lock);
 569         brcms_c_mac_promisc(wl->wlc, *total_flags);
 570         spin_unlock_bh(&wl->lock);
 571         return;
 572 }
 573
 574 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 575 {
 576         struct brcms_info *wl = hw->priv;
 577         spin_lock_bh(&wl->lock);
 578         brcms_c_scan_start(wl->wlc);
 579         spin_unlock_bh(&wl->lock);
 580         return;
 581 }
 582
 583 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 584 {
 585         struct brcms_info *wl = hw->priv;
 586         spin_lock_bh(&wl->lock);
 587         brcms_c_scan_stop(wl->wlc);
 588         spin_unlock_bh(&wl->lock);
 589         return;
 590 }
 591
 592 static int
 593 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 594                   const struct ieee80211_tx_queue_params *params)
 595 {
 596         struct brcms_info *wl = hw->priv;
 597
 598         spin_lock_bh(&wl->lock);
 599         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 600         spin_unlock_bh(&wl->lock);
 601
 602         return 0;
 603 }
 604
 605 static int
 606 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 607                struct ieee80211_sta *sta)
 608 {
 609         struct brcms_info *wl = hw->priv;
 610         struct scb *scb = &wl->wlc->pri_scb;
 611
 612         brcms_c_init_scb(scb);
 613
 614         wl->pub->global_ampdu = &(scb->scb_ampdu);
 615         wl->pub->global_ampdu->scb = scb;
 616         wl->pub->global_ampdu->max_pdu = 16;
 617
 618         /*
 619          * minstrel_ht initiates addBA on our behalf by calling
 620          * ieee80211_start_tx_ba_session()
 621          */
 622         return 0;
 623 }
 624
 625 static int
 626 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 627                     struct ieee80211_vif *vif,
 628                     enum ieee80211_ampdu_mlme_action action,
 629                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 630                     u8 buf_size)
 631 {
 632         struct brcms_info *wl = hw->priv;
 633         struct scb *scb = &wl->wlc->pri_scb;
 634         int status;
 635
 636         if (WARN_ON(scb->magic != SCB_MAGIC))
 637                 return -EIDRM;
 638         switch (action) {
 639         case IEEE80211_AMPDU_RX_START:
 640                 break;
 641         case IEEE80211_AMPDU_RX_STOP:
 642                 break;
 643         case IEEE80211_AMPDU_TX_START:
 644                 spin_lock_bh(&wl->lock);
 645                 status = brcms_c_aggregatable(wl->wlc, tid);
 646                 spin_unlock_bh(&wl->lock);
 647                 if (!status) {
 648                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 649                                   tid);
 650                         return -EINVAL;
 651                 }
 652                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 653                 break;
 654
 655         case IEEE80211_AMPDU_TX_STOP:
 656                 spin_lock_bh(&wl->lock);
 657                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 658                 spin_unlock_bh(&wl->lock);
 659                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 660                 break;
 661         case IEEE80211_AMPDU_TX_OPERATIONAL:
 662                 /*
 663                  * BA window size from ADDBA response ('buf_size') defines how
 664                  * many outstanding MPDUs are allowed for the BA stream by
 665                  * recipient and traffic class. 'ampdu_factor' gives maximum
 666                  * AMPDU size.
 667                  */
 668                 spin_lock_bh(&wl->lock);
 669                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 670                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 671                          sta->ht_cap.ampdu_factor)) - 1);
 672                 spin_unlock_bh(&wl->lock);
 673                 /* Power save wakeup */
 674                 break;
 675         default:
 676                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 677                           __func__);
 678         }
 679
 680         return 0;
 681 }
 682
 683 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 684 {
 685         struct brcms_info *wl = hw->priv;
 686         bool blocked;
 687
 688         spin_lock_bh(&wl->lock);
 689         blocked = brcms_c_check_radio_disabled(wl->wlc);
 690         spin_unlock_bh(&wl->lock);
 691
 692         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 693 }
 694
 695 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 696 {
 697         struct brcms_info *wl = hw->priv;
 698
 699         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 700
 701         /* wait for packet queue and dma fifos to run empty */
 702         spin_lock_bh(&wl->lock);
 703         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 704         spin_unlock_bh(&wl->lock);
 705 }
 706
 707 static const struct ieee80211_ops brcms_ops = {
 708         .tx = brcms_ops_tx,
 709         .start = brcms_ops_start,
 710         .stop = brcms_ops_stop,
 711         .add_interface = brcms_ops_add_interface,
 712         .remove_interface = brcms_ops_remove_interface,
 713         .config = brcms_ops_config,
 714         .bss_info_changed = brcms_ops_bss_info_changed,
 715         .configure_filter = brcms_ops_configure_filter,
 716         .sw_scan_start = brcms_ops_sw_scan_start,
 717         .sw_scan_complete = brcms_ops_sw_scan_complete,
 718         .conf_tx = brcms_ops_conf_tx,
 719         .sta_add = brcms_ops_sta_add,
 720         .ampdu_action = brcms_ops_ampdu_action,
 721         .rfkill_poll = brcms_ops_rfkill_poll,
 722         .flush = brcms_ops_flush,
 723 };
 724
 725 /*
 726  * is called in brcms_bcma_probe() context, therefore no locking required.
 727  */
 728 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
 729 {
 730         return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
 731 }
 732
 733 void brcms_dpc(unsigned long data)
 734 {
 735         struct brcms_info *wl;
 736
 737         wl = (struct brcms_info *) data;
 738
 739         spin_lock_bh(&wl->lock);
 740
 741         /* call the common second level interrupt handler */
 742         if (wl->pub->up) {
 743                 if (wl->resched) {
 744                         unsigned long flags;
 745
 746                         spin_lock_irqsave(&wl->isr_lock, flags);
 747                         brcms_c_intrsupd(wl->wlc);
 748                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 749                 }
 750
 751                 wl->resched = brcms_c_dpc(wl->wlc, true);
 752         }
 753
 754         /* brcms_c_dpc() may bring the driver down */
 755         if (!wl->pub->up)
 756                 goto done;
 757
 758         /* re-schedule dpc */
 759         if (wl->resched)
 760                 tasklet_schedule(&wl->tasklet);
 761         else
 762                 /* re-enable interrupts */
 763                 brcms_intrson(wl);
 764
 765  done:
 766         spin_unlock_bh(&wl->lock);
 767 }
 768
 769 /*
 770  * Precondition: Since this function is called in brcms_pci_probe() context,
 771  * no locking is required.
 772  */
 773 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
 774 {
 775         int status;
 776         struct device *device = &pdev->dev;
 777         char fw_name[100];
 778         int i;
 779
 780         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 781         for (i = 0; i < MAX_FW_IMAGES; i++) {
 782                 if (brcms_firmwares[i] == NULL)
 783                         break;
 784                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 785                         UCODE_LOADER_API_VER);
 786                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 787                 if (status) {
 788                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 789                                   KBUILD_MODNAME, fw_name);
 790                         return status;
 791                 }
 792                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 793                         UCODE_LOADER_API_VER);
 794                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 795                 if (status) {
 796                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 797                                   KBUILD_MODNAME, fw_name);
 798                         return status;
 799                 }
 800                 wl->fw.hdr_num_entries[i] =
 801                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 802         }
 803         wl->fw.fw_cnt = i;
 804         return brcms_ucode_data_init(wl, &wl->ucode);
 805 }
 806
 807 /*
 808  * Precondition: Since this function is called in brcms_pci_probe() context,
 809  * no locking is required.
 810  */
 811 static void brcms_release_fw(struct brcms_info *wl)
 812 {
 813         int i;
 814         for (i = 0; i < MAX_FW_IMAGES; i++) {
 815                 release_firmware(wl->fw.fw_bin[i]);
 816                 release_firmware(wl->fw.fw_hdr[i]);
 817         }
 818 }
 819
 820 /**
 821  * This function frees the WL per-device resources.
 822  *
 823  * This function frees resources owned by the WL device pointed to
 824  * by the wl parameter.
 825  *
 826  * precondition: can both be called locked and unlocked
 827  *
 828  */
 829 static void brcms_free(struct brcms_info *wl)
 830 {
 831         struct brcms_timer *t, *next;
 832
 833         /* free ucode data */
 834         if (wl->fw.fw_cnt)
 835                 brcms_ucode_data_free(&wl->ucode);
 836         if (wl->irq)
 837                 free_irq(wl->irq, wl);
 838
 839         /* kill dpc */
 840         tasklet_kill(&wl->tasklet);
 841
 842         if (wl->pub)
 843                 brcms_c_module_unregister(wl->pub, "linux", wl);
 844
 845         /* free common resources */
 846         if (wl->wlc) {
 847                 brcms_c_detach(wl->wlc);
 848                 wl->wlc = NULL;
 849                 wl->pub = NULL;
 850         }
 851
 852         /* virtual interface deletion is deferred so we cannot spinwait */
 853
 854         /* wait for all pending callbacks to complete */
 855         while (atomic_read(&wl->callbacks) > 0)
 856                 schedule();
 857
 858         /* free timers */
 859         for (t = wl->timers; t; t = next) {
 860                 next = t->next;
 861 #ifdef DEBUG
 862                 kfree(t->name);
 863 #endif
 864                 kfree(t);
 865         }
 866 }
 867
 868 /*
 869 * called from both kernel as from this kernel module (error flow on attach)
 870 * precondition: perimeter lock is not acquired.
 871 */
 872 static void brcms_remove(struct bcma_device *pdev)
 873 {
 874         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 875         struct brcms_info *wl = hw->priv;
 876
 877         if (wl->wlc) {
 878                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 879                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 880                 ieee80211_unregister_hw(hw);
 881         }
 882
 883         brcms_free(wl);
 884
 885         bcma_set_drvdata(pdev, NULL);
 886         ieee80211_free_hw(hw);
 887 }
 888
 889 static irqreturn_t brcms_isr(int irq, void *dev_id)
 890 {
 891         struct brcms_info *wl;
 892         bool ours, wantdpc;
 893
 894         wl = (struct brcms_info *) dev_id;
 895
 896         spin_lock(&wl->isr_lock);
 897
 898         /* call common first level interrupt handler */
 899         ours = brcms_c_isr(wl->wlc, &wantdpc);
 900         if (ours) {
 901                 /* if more to do... */
 902                 if (wantdpc) {
 903
 904                         /* ...and call the second level interrupt handler */
 905                         /* schedule dpc */
 906                         tasklet_schedule(&wl->tasklet);
 907                 }
 908         }
 909
 910         spin_unlock(&wl->isr_lock);
 911
 912         return IRQ_RETVAL(ours);
 913 }
 914
 915 /*
 916  * is called in brcms_pci_probe() context, therefore no locking required.
 917  */
 918 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 919 {
 920         struct brcms_info *wl = hw->priv;
 921         struct brcms_c_info *wlc = wl->wlc;
 922         struct ieee80211_supported_band *band;
 923         int has_5g = 0;
 924         u16 phy_type;
 925
 926         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 927         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 928
 929         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 930         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 931                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 932                 *band = brcms_band_2GHz_nphy_template;
 933                 if (phy_type == PHY_TYPE_LCN) {
 934                         /* Single stream */
 935                         band->ht_cap.mcs.rx_mask[1] = 0;
 936                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 937                 }
 938                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 939         } else {
 940                 return -EPERM;
 941         }
 942
 943         /* Assume all bands use the same phy.  True for 11n devices. */
 944         if (wl->pub->_nbands > 1) {
 945                 has_5g++;
 946                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 947                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 948                         *band = brcms_band_5GHz_nphy_template;
 949                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 950                 } else {
 951                         return -EPERM;
 952                 }
 953         }
 954         return 0;
 955 }
 956
 957 /*
 958  * is called in brcms_pci_probe() context, therefore no locking required.
 959  */
 960 static int ieee_hw_init(struct ieee80211_hw *hw)
 961 {
 962         hw->flags = IEEE80211_HW_SIGNAL_DBM
 963             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 964             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 965             | IEEE80211_HW_AMPDU_AGGREGATION;
 966
 967         hw->extra_tx_headroom = brcms_c_get_header_len();
 968         hw->queues = N_TX_QUEUES;
 969         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 970
 971         /* channel change time is dependent on chip and band  */
 972         hw->channel_change_time = 7 * 1000;
 973         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 974
 975         hw->rate_control_algorithm = "minstrel_ht";
 976
 977         hw->sta_data_size = 0;
 978         return ieee_hw_rate_init(hw);
 979 }
 980
 981 /**
 982  * attach to the WL device.
 983  *
 984  * Attach to the WL device identified by vendor and device parameters.
 985  * regs is a host accessible memory address pointing to WL device registers.
 986  *
 987  * brcms_attach is not defined as static because in the case where no bus
 988  * is defined, wl_attach will never be called, and thus, gcc will issue
 989  * a warning that this function is defined but not used if we declare
 990  * it as static.
 991  *
 992  *
 993  * is called in brcms_bcma_probe() context, therefore no locking required.
 994  */
 995 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
 996 {
 997         struct brcms_info *wl = NULL;
 998         int unit, err;
 999         struct ieee80211_hw *hw;
1000         u8 perm[ETH_ALEN];
1001
1002         unit = n_adapters_found;
1003         err = 0;
1004
1005         if (unit < 0)
1006                 return NULL;
1007
1008         /* allocate private info */
1009         hw = bcma_get_drvdata(pdev);
1010         if (hw != NULL)
1011                 wl = hw->priv;
1012         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1013                 return NULL;
1014         wl->wiphy = hw->wiphy;
1015
1016         atomic_set(&wl->callbacks, 0);
1017
1018         /* setup the bottom half handler */
1019         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1020
1021         spin_lock_init(&wl->lock);
1022         spin_lock_init(&wl->isr_lock);
1023
1024         /* prepare ucode */
1025         if (brcms_request_fw(wl, pdev->bus->host_pci) < 0) {
1026                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1027                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1028                 brcms_release_fw(wl);
1029                 brcms_remove(pdev);
1030                 return NULL;
1031         }
1032
1033         /* common load-time initialization */
1034         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1035         brcms_release_fw(wl);
1036         if (!wl->wlc) {
1037                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1038                           KBUILD_MODNAME, err);
1039                 goto fail;
1040         }
1041         wl->pub = brcms_c_pub(wl->wlc);
1042
1043         wl->pub->ieee_hw = hw;
1044
1045         /* register our interrupt handler */
1046         if (request_irq(pdev->bus->host_pci->irq, brcms_isr,
1047                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1048                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1049                 goto fail;
1050         }
1051         wl->irq = pdev->bus->host_pci->irq;
1052
1053         /* register module */
1054         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1055
1056         if (ieee_hw_init(hw)) {
1057                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1058                           __func__);
1059                 goto fail;
1060         }
1061
1062         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1063         if (WARN_ON(!is_valid_ether_addr(perm)))
1064                 goto fail;
1065         SET_IEEE80211_PERM_ADDR(hw, perm);
1066
1067         err = ieee80211_register_hw(hw);
1068         if (err)
1069                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1070                           "%d\n", __func__, err);
1071
1072         if (wl->pub->srom_ccode[0])
1073                 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1074         else
1075                 err = brcms_set_hint(wl, "US");
1076         if (err)
1077                 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1078                           __func__, err);
1079
1080         n_adapters_found++;
1081         return wl;
1082
1083 fail:
1084         brcms_free(wl);
1085         return NULL;
1086 }
1087
1088
1089
1090 /**
1091  * determines if a device is a WL device, and if so, attaches it.
1092  *
1093  * This function determines if a device pointed to by pdev is a WL device,
1094  * and if so, performs a brcms_attach() on it.
1095  *
1096  * Perimeter lock is initialized in the course of this function.
1097  */
1098 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1099 {
1100         struct brcms_info *wl;
1101         struct ieee80211_hw *hw;
1102
1103         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1104                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1105                  pdev->bus->host_pci->irq);
1106
1107         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1108             (pdev->id.id != BCMA_CORE_80211))
1109                 return -ENODEV;
1110
1111         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1112         if (!hw) {
1113                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1114                 return -ENOMEM;
1115         }
1116
1117         SET_IEEE80211_DEV(hw, &pdev->dev);
1118
1119         bcma_set_drvdata(pdev, hw);
1120
1121         memset(hw->priv, 0, sizeof(*wl));
1122
1123         wl = brcms_attach(pdev);
1124         if (!wl) {
1125                 pr_err("%s: brcms_attach failed!\n", __func__);
1126                 return -ENODEV;
1127         }
1128         return 0;
1129 }
1130
1131 static int brcms_suspend(struct bcma_device *pdev)
1132 {
1133         struct brcms_info *wl;
1134         struct ieee80211_hw *hw;
1135
1136         hw = bcma_get_drvdata(pdev);
1137         wl = hw->priv;
1138         if (!wl) {
1139                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1140                        __func__);
1141                 return -ENODEV;
1142         }
1143
1144         /* only need to flag hw is down for proper resume */
1145         spin_lock_bh(&wl->lock);
1146         wl->pub->hw_up = false;
1147         spin_unlock_bh(&wl->lock);
1148
1149         pr_debug("brcms_suspend ok\n");
1150
1151         return 0;
1152 }
1153
1154 static int brcms_resume(struct bcma_device *pdev)
1155 {
1156         pr_debug("brcms_resume ok\n");
1157         return 0;
1158 }
1159
1160 static struct bcma_driver brcms_bcma_driver = {
1161         .name     = KBUILD_MODNAME,
1162         .probe    = brcms_bcma_probe,
1163         .suspend  = brcms_suspend,
1164         .resume   = brcms_resume,
1165         .remove   = __devexit_p(brcms_remove),
1166         .id_table = brcms_coreid_table,
1167 };
1168
1169 /**
1170  * This is the main entry point for the brcmsmac driver.
1171  *
1172  * This function is scheduled upon module initialization and
1173  * does the driver registration, which result in brcms_bcma_probe()
1174  * call resulting in the driver bringup.
1175  */
1176 static void brcms_driver_init(struct work_struct *work)
1177 {
1178         int error;
1179
1180         error = bcma_driver_register(&brcms_bcma_driver);
1181         if (error)
1182                 pr_err("%s: register returned %d\n", __func__, error);
1183 }
1184
1185 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1186
1187 static int __init brcms_module_init(void)
1188 {
1189 #ifdef DEBUG
1190         if (msglevel != 0xdeadbeef)
1191                 brcm_msg_level = msglevel;
1192 #endif
1193         if (!schedule_work(&brcms_driver_work))
1194                 return -EBUSY;
1195
1196         return 0;
1197 }
1198
1199 /**
1200  * This function unloads the brcmsmac driver from the system.
1201  *
1202  * This function unconditionally unloads the brcmsmac driver module from the
1203  * system.
1204  *
1205  */
1206 static void __exit brcms_module_exit(void)
1207 {
1208         cancel_work_sync(&brcms_driver_work);
1209         bcma_driver_unregister(&brcms_bcma_driver);
1210 }
1211
1212 module_init(brcms_module_init);
1213 module_exit(brcms_module_exit);
1214
1215 /*
1216  * precondition: perimeter lock has been acquired
1217  */
1218 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1219                          bool state, int prio)
1220 {
1221         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1222 }
1223
1224 /*
1225  * precondition: perimeter lock has been acquired
1226  */
1227 void brcms_init(struct brcms_info *wl)
1228 {
1229         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1230         brcms_reset(wl);
1231         brcms_c_init(wl->wlc, wl->mute_tx);
1232 }
1233
1234 /*
1235  * precondition: perimeter lock has been acquired
1236  */
1237 uint brcms_reset(struct brcms_info *wl)
1238 {
1239         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1240         brcms_c_reset(wl->wlc);
1241
1242         /* dpc will not be rescheduled */
1243         wl->resched = false;
1244
1245         return 0;
1246 }
1247
1248 void brcms_fatal_error(struct brcms_info *wl)
1249 {
1250         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1251                   wl->wlc->pub->unit);
1252         brcms_reset(wl);
1253         ieee80211_restart_hw(wl->pub->ieee_hw);
1254 }
1255
1256 /*
1257  * These are interrupt on/off entry points. Disable interrupts
1258  * during interrupt state transition.
1259  */
1260 void brcms_intrson(struct brcms_info *wl)
1261 {
1262         unsigned long flags;
1263
1264         spin_lock_irqsave(&wl->isr_lock, flags);
1265         brcms_c_intrson(wl->wlc);
1266         spin_unlock_irqrestore(&wl->isr_lock, flags);
1267 }
1268
1269 u32 brcms_intrsoff(struct brcms_info *wl)
1270 {
1271         unsigned long flags;
1272         u32 status;
1273
1274         spin_lock_irqsave(&wl->isr_lock, flags);
1275         status = brcms_c_intrsoff(wl->wlc);
1276         spin_unlock_irqrestore(&wl->isr_lock, flags);
1277         return status;
1278 }
1279
1280 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1281 {
1282         unsigned long flags;
1283
1284         spin_lock_irqsave(&wl->isr_lock, flags);
1285         brcms_c_intrsrestore(wl->wlc, macintmask);
1286         spin_unlock_irqrestore(&wl->isr_lock, flags);
1287 }
1288
1289 /*
1290  * precondition: perimeter lock has been acquired
1291  */
1292 int brcms_up(struct brcms_info *wl)
1293 {
1294         int error = 0;
1295
1296         if (wl->pub->up)
1297                 return 0;
1298
1299         error = brcms_c_up(wl->wlc);
1300
1301         return error;
1302 }
1303
1304 /*
1305  * precondition: perimeter lock has been acquired
1306  */
1307 void brcms_down(struct brcms_info *wl)
1308 {
1309         uint callbacks, ret_val = 0;
1310
1311         /* call common down function */
1312         ret_val = brcms_c_down(wl->wlc);
1313         callbacks = atomic_read(&wl->callbacks) - ret_val;
1314
1315         /* wait for down callbacks to complete */
1316         spin_unlock_bh(&wl->lock);
1317
1318         /* For HIGH_only driver, it's important to actually schedule other work,
1319          * not just spin wait since everything runs at schedule level
1320          */
1321         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1322
1323         spin_lock_bh(&wl->lock);
1324 }
1325
1326 /*
1327 * precondition: perimeter lock is not acquired
1328  */
1329 static void _brcms_timer(struct work_struct *work)
1330 {
1331         struct brcms_timer *t = container_of(work, struct brcms_timer,
1332                                              dly_wrk.work);
1333
1334         spin_lock_bh(&t->wl->lock);
1335
1336         if (t->set) {
1337                 if (t->periodic) {
1338                         atomic_inc(&t->wl->callbacks);
1339                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1340                                                      &t->dly_wrk,
1341                                                      msecs_to_jiffies(t->ms));
1342                 } else {
1343                         t->set = false;
1344                 }
1345
1346                 t->fn(t->arg);
1347         }
1348
1349         atomic_dec(&t->wl->callbacks);
1350
1351         spin_unlock_bh(&t->wl->lock);
1352 }
1353
1354 /*
1355  * Adds a timer to the list. Caller supplies a timer function.
1356  * Is called from wlc.
1357  *
1358  * precondition: perimeter lock has been acquired
1359  */
1360 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1361                                      void (*fn) (void *arg),
1362                                      void *arg, const char *name)
1363 {
1364         struct brcms_timer *t;
1365
1366         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1367         if (!t)
1368                 return NULL;
1369
1370         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1371         t->wl = wl;
1372         t->fn = fn;
1373         t->arg = arg;
1374         t->next = wl->timers;
1375         wl->timers = t;
1376
1377 #ifdef DEBUG
1378         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1379         if (t->name)
1380                 strcpy(t->name, name);
1381 #endif
1382
1383         return t;
1384 }
1385
1386 /*
1387  * adds only the kernel timer since it's going to be more accurate
1388  * as well as it's easier to make it periodic
1389  *
1390  * precondition: perimeter lock has been acquired
1391  */
1392 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1393 {
1394         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1395
1396 #ifdef DEBUG
1397         if (t->set)
1398                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1399                           __func__, t->name, periodic);
1400 #endif
1401         t->ms = ms;
1402         t->periodic = (bool) periodic;
1403         if (!t->set) {
1404                 t->set = true;
1405                 atomic_inc(&t->wl->callbacks);
1406         }
1407
1408         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1409 }
1410
1411 /*
1412  * return true if timer successfully deleted, false if still pending
1413  *
1414  * precondition: perimeter lock has been acquired
1415  */
1416 bool brcms_del_timer(struct brcms_timer *t)
1417 {
1418         if (t->set) {
1419                 t->set = false;
1420                 if (!cancel_delayed_work(&t->dly_wrk))
1421                         return false;
1422
1423                 atomic_dec(&t->wl->callbacks);
1424         }
1425
1426         return true;
1427 }
1428
1429 /*
1430  * precondition: perimeter lock has been acquired
1431  */
1432 void brcms_free_timer(struct brcms_timer *t)
1433 {
1434         struct brcms_info *wl = t->wl;
1435         struct brcms_timer *tmp;
1436
1437         /* delete the timer in case it is active */
1438         brcms_del_timer(t);
1439
1440         if (wl->timers == t) {
1441                 wl->timers = wl->timers->next;
1442 #ifdef DEBUG
1443                 kfree(t->name);
1444 #endif
1445                 kfree(t);
1446                 return;
1447
1448         }
1449
1450         tmp = wl->timers;
1451         while (tmp) {
1452                 if (tmp->next == t) {
1453                         tmp->next = t->next;
1454 #ifdef DEBUG
1455                         kfree(t->name);
1456 #endif
1457                         kfree(t);
1458                         return;
1459                 }
1460                 tmp = tmp->next;
1461         }
1462
1463 }
1464
1465 /*
1466  * precondition: perimeter lock has been acquired
1467  */
1468 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1469 {
1470         int i, entry;
1471         const u8 *pdata;
1472         struct firmware_hdr *hdr;
1473         for (i = 0; i < wl->fw.fw_cnt; i++) {
1474                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1475                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1476                      entry++, hdr++) {
1477                         u32 len = le32_to_cpu(hdr->len);
1478                         if (le32_to_cpu(hdr->idx) == idx) {
1479                                 pdata = wl->fw.fw_bin[i]->data +
1480                                         le32_to_cpu(hdr->offset);
1481                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1482                                 if (*pbuf == NULL)
1483                                         goto fail;
1484
1485                                 return 0;
1486                         }
1487                 }
1488         }
1489         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1490                   idx);
1491         *pbuf = NULL;
1492 fail:
1493         return -ENODATA;
1494 }
1495
1496 /*
1497  * Precondition: Since this function is called in brcms_bcma_probe() context,
1498  * no locking is required.
1499  */
1500 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1501 {
1502         int i, entry;
1503         const u8 *pdata;
1504         struct firmware_hdr *hdr;
1505         for (i = 0; i < wl->fw.fw_cnt; i++) {
1506                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1507                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1508                      entry++, hdr++) {
1509                         if (le32_to_cpu(hdr->idx) == idx) {
1510                                 pdata = wl->fw.fw_bin[i]->data +
1511                                         le32_to_cpu(hdr->offset);
1512                                 if (le32_to_cpu(hdr->len) != 4) {
1513                                         wiphy_err(wl->wiphy,
1514                                                   "ERROR: fw hdr len\n");
1515                                         return -ENOMSG;
1516                                 }
1517                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1518                                 return 0;
1519                         }
1520                 }
1521         }
1522         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1523         return -ENOMSG;
1524 }
1525
1526 /*
1527  * precondition: can both be called locked and unlocked
1528  */
1529 void brcms_ucode_free_buf(void *p)
1530 {
1531         kfree(p);
1532 }
1533
1534 /*
1535  * checks validity of all firmware images loaded from user space
1536  *
1537  * Precondition: Since this function is called in brcms_bcma_probe() context,
1538  * no locking is required.
1539  */
1540 int brcms_check_firmwares(struct brcms_info *wl)
1541 {
1542         int i;
1543         int entry;
1544         int rc = 0;
1545         const struct firmware *fw;
1546         const struct firmware *fw_hdr;
1547         struct firmware_hdr *ucode_hdr;
1548         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1549                 fw =  wl->fw.fw_bin[i];
1550                 fw_hdr = wl->fw.fw_hdr[i];
1551                 if (fw == NULL && fw_hdr == NULL) {
1552                         break;
1553                 } else if (fw == NULL || fw_hdr == NULL) {
1554                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1555                                   __func__);
1556                         rc = -EBADF;
1557                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1558                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1559                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1560                                 sizeof(struct firmware_hdr));
1561                         rc = -EBADF;
1562                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1563                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1564                                   "%zu\n", __func__, fw->size);
1565                         rc = -EBADF;
1566                 } else {
1567                         /* check if ucode section overruns firmware image */
1568                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1569                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1570                              !rc; entry++, ucode_hdr++) {
1571                                 if (le32_to_cpu(ucode_hdr->offset) +
1572                                     le32_to_cpu(ucode_hdr->len) >
1573                                     fw->size) {
1574                                         wiphy_err(wl->wiphy,
1575                                                   "%s: conflicting bin/hdr\n",
1576                                                   __func__);
1577                                         rc = -EBADF;
1578                                 }
1579                         }
1580                 }
1581         }
1582         if (rc == 0 && wl->fw.fw_cnt != i) {
1583                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1584                         wl->fw.fw_cnt);
1585                 rc = -EBADF;
1586         }
1587         return rc;
1588 }
1589
1590 /*
1591  * precondition: perimeter lock has been acquired
1592  */
1593 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1594 {
1595         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1596
1597         spin_unlock_bh(&wl->lock);
1598         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1599         if (blocked)
1600                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1601         spin_lock_bh(&wl->lock);
1602         return blocked;
1603 }
1604
1605 /*
1606  * precondition: perimeter lock has been acquired
1607  */
1608 void brcms_msleep(struct brcms_info *wl, uint ms)
1609 {
1610         spin_unlock_bh(&wl->lock);
1611         msleep(ms);
1612         spin_lock_bh(&wl->lock);
1613 }