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 "phy/phy_int.h"
  29 #include "d11.h"
  30 #include "channel.h"
  31 #include "scb.h"
  32 #include "pub.h"
  33 #include "ucode_loader.h"
  34 #include "mac80211_if.h"
  35 #include "main.h"
  36
  37 #define N_TX_QUEUES     4 /* #tx queues on mac80211<->driver interface */
  38
  39 /* Flags we support */
  40 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
  41         FIF_ALLMULTI | \
  42         FIF_FCSFAIL | \
  43         FIF_CONTROL | \
  44         FIF_OTHER_BSS | \
  45         FIF_BCN_PRBRESP_PROMISC | \
  46         FIF_PSPOLL)
  47
  48 #define CHAN2GHZ(channel, freqency, chflags)  { \
  49         .band = IEEE80211_BAND_2GHZ, \
  50         .center_freq = (freqency), \
  51         .hw_value = (channel), \
  52         .flags = chflags, \
  53         .max_antenna_gain = 0, \
  54         .max_power = 19, \
  55 }
  56
  57 #define CHAN5GHZ(channel, chflags)  { \
  58         .band = IEEE80211_BAND_5GHZ, \
  59         .center_freq = 5000 + 5*(channel), \
  60         .hw_value = (channel), \
  61         .flags = chflags, \
  62         .max_antenna_gain = 0, \
  63         .max_power = 21, \
  64 }
  65
  66 #define RATE(rate100m, _flags) { \
  67         .bitrate = (rate100m), \
  68         .flags = (_flags), \
  69         .hw_value = (rate100m / 5), \
  70 }
  71
  72 struct firmware_hdr {
  73         __le32 offset;
  74         __le32 len;
  75         __le32 idx;
  76 };
  77
  78 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
  79         "brcm/bcm43xx",
  80         NULL
  81 };
  82
  83 static int n_adapters_found;
  84
  85 MODULE_AUTHOR("Broadcom Corporation");
  86 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
  87 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
  88 MODULE_LICENSE("Dual BSD/GPL");
  89 /* This needs to be adjusted when brcms_firmwares changes */
  90 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
  91 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
  92
  93 /* recognized BCMA Core IDs */
  94 static struct bcma_device_id brcms_coreid_table[] = {
  95         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  96         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
  97         BCMA_CORETABLE_END
  98 };
  99 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
 100
 101 #ifdef DEBUG
 102 static int msglevel = 0xdeadbeef;
 103 module_param(msglevel, int, 0);
 104 #endif                          /* DEBUG */
 105
 106 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 107         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 110         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 111         CHAN2GHZ(5, 2432, 0),
 112         CHAN2GHZ(6, 2437, 0),
 113         CHAN2GHZ(7, 2442, 0),
 114         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 117         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 118         CHAN2GHZ(12, 2467,
 119                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 120                  IEEE80211_CHAN_NO_HT40PLUS),
 121         CHAN2GHZ(13, 2472,
 122                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 123                  IEEE80211_CHAN_NO_HT40PLUS),
 124         CHAN2GHZ(14, 2484,
 125                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 126                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
 127                  IEEE80211_CHAN_NO_OFDM)
 128 };
 129
 130 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 131         /* UNII-1 */
 132         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 133         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 134         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 135         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 136         /* UNII-2 */
 137         CHAN5GHZ(52,
 138                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 139                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 140         CHAN5GHZ(56,
 141                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 142                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 143         CHAN5GHZ(60,
 144                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 145                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 146         CHAN5GHZ(64,
 147                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 148                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 149         /* MID */
 150         CHAN5GHZ(100,
 151                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 152                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 153         CHAN5GHZ(104,
 154                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 155                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 156         CHAN5GHZ(108,
 157                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 158                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 159         CHAN5GHZ(112,
 160                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 161                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 162         CHAN5GHZ(116,
 163                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 164                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 165         CHAN5GHZ(120,
 166                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 167                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 168         CHAN5GHZ(124,
 169                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 170                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 171         CHAN5GHZ(128,
 172                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 173                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 174         CHAN5GHZ(132,
 175                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 176                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 177         CHAN5GHZ(136,
 178                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 179                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 180         CHAN5GHZ(140,
 181                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 182                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 183                  IEEE80211_CHAN_NO_HT40MINUS),
 184         /* UNII-3 */
 185         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 186         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 187         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 188         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 189         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 190 };
 191
 192 /*
 193  * The rate table is used for both 2.4G and 5G rates. The
 194  * latter being a subset as it does not support CCK rates.
 195  */
 196 static struct ieee80211_rate legacy_ratetable[] = {
 197         RATE(10, 0),
 198         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 199         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 200         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 201         RATE(60, 0),
 202         RATE(90, 0),
 203         RATE(120, 0),
 204         RATE(180, 0),
 205         RATE(240, 0),
 206         RATE(360, 0),
 207         RATE(480, 0),
 208         RATE(540, 0),
 209 };
 210
 211 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 212         .band = IEEE80211_BAND_2GHZ,
 213         .channels = brcms_2ghz_chantable,
 214         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 215         .bitrates = legacy_ratetable,
 216         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 217         .ht_cap = {
 218                    /* from include/linux/ieee80211.h */
 219                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 220                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 221                    .ht_supported = true,
 222                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 223                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 224                    .mcs = {
 225                            /* placeholders for now */
 226                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 227                            .rx_highest = cpu_to_le16(500),
 228                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 229                    }
 230 };
 231
 232 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 233         .band = IEEE80211_BAND_5GHZ,
 234         .channels = brcms_5ghz_nphy_chantable,
 235         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 236         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 237         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 238                         BRCMS_LEGACY_5G_RATE_OFFSET,
 239         .ht_cap = {
 240                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 241                           IEEE80211_HT_CAP_SGI_40,
 242                    .ht_supported = true,
 243                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 244                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 245                    .mcs = {
 246                            /* placeholders for now */
 247                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 248                            .rx_highest = cpu_to_le16(500),
 249                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 250                    }
 251 };
 252
 253 /* flags the given rate in rateset as requested */
 254 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 255 {
 256         u32 i;
 257
 258         for (i = 0; i < rs->count; i++) {
 259                 if (rate != (rs->rates[i] & 0x7f))
 260                         continue;
 261
 262                 if (is_br)
 263                         rs->rates[i] |= BRCMS_RATE_FLAG;
 264                 else
 265                         rs->rates[i] &= BRCMS_RATE_MASK;
 266                 return;
 267         }
 268 }
 269
 270 static void brcms_ops_tx(struct ieee80211_hw *hw,
 271                          struct ieee80211_tx_control *control,
 272                          struct sk_buff *skb)
 273 {
 274         struct brcms_info *wl = hw->priv;
 275         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 276
 277         spin_lock_bh(&wl->lock);
 278         if (!wl->pub->up) {
 279                 wiphy_err(wl->wiphy, "ops->tx called while down\n");
 280                 kfree_skb(skb);
 281                 goto done;
 282         }
 283         brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
 284         tx_info->rate_driver_data[0] = control->sta;
 285  done:
 286         spin_unlock_bh(&wl->lock);
 287 }
 288
 289 static int brcms_ops_start(struct ieee80211_hw *hw)
 290 {
 291         struct brcms_info *wl = hw->priv;
 292         bool blocked;
 293         int err;
 294
 295         ieee80211_wake_queues(hw);
 296         spin_lock_bh(&wl->lock);
 297         blocked = brcms_rfkill_set_hw_state(wl);
 298         spin_unlock_bh(&wl->lock);
 299         if (!blocked)
 300                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 301
 302         spin_lock_bh(&wl->lock);
 303         /* avoid acknowledging frames before a non-monitor device is added */
 304         wl->mute_tx = true;
 305
 306         if (!wl->pub->up)
 307                 err = brcms_up(wl);
 308         else
 309                 err = -ENODEV;
 310         spin_unlock_bh(&wl->lock);
 311
 312         if (err != 0)
 313                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 314                           err);
 315         return err;
 316 }
 317
 318 static void brcms_ops_stop(struct ieee80211_hw *hw)
 319 {
 320         struct brcms_info *wl = hw->priv;
 321         int status;
 322
 323         ieee80211_stop_queues(hw);
 324
 325         if (wl->wlc == NULL)
 326                 return;
 327
 328         spin_lock_bh(&wl->lock);
 329         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 330         spin_unlock_bh(&wl->lock);
 331         if (!status) {
 332                 wiphy_err(wl->wiphy,
 333                           "wl: brcms_ops_stop: chipmatch failed\n");
 334                 return;
 335         }
 336
 337         /* put driver in down state */
 338         spin_lock_bh(&wl->lock);
 339         brcms_down(wl);
 340         spin_unlock_bh(&wl->lock);
 341 }
 342
 343 static int
 344 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 345 {
 346         struct brcms_info *wl = hw->priv;
 347
 348         /* Just STA for now */
 349         if (vif->type != NL80211_IFTYPE_STATION) {
 350                 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
 351                           " STA for now\n", __func__, vif->type);
 352                 return -EOPNOTSUPP;
 353         }
 354
 355         wl->mute_tx = false;
 356         brcms_c_mute(wl->wlc, false);
 357
 358         return 0;
 359 }
 360
 361 static void
 362 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 363 {
 364 }
 365
 366 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
 367 {
 368         struct ieee80211_conf *conf = &hw->conf;
 369         struct brcms_info *wl = hw->priv;
 370         int err = 0;
 371         int new_int;
 372         struct wiphy *wiphy = hw->wiphy;
 373
 374         spin_lock_bh(&wl->lock);
 375         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
 376                 brcms_c_set_beacon_listen_interval(wl->wlc,
 377                                                    conf->listen_interval);
 378         }
 379         if (changed & IEEE80211_CONF_CHANGE_MONITOR)
 380                 wiphy_dbg(wiphy, "%s: change monitor mode: %s\n",
 381                           __func__, conf->flags & IEEE80211_CONF_MONITOR ?
 382                           "true" : "false");
 383         if (changed & IEEE80211_CONF_CHANGE_PS)
 384                 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
 385                           __func__, conf->flags & IEEE80211_CONF_PS ?
 386                           "true" : "false");
 387
 388         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 389                 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
 390                 if (err < 0) {
 391                         wiphy_err(wiphy, "%s: Error setting power_level\n",
 392                                   __func__);
 393                         goto config_out;
 394                 }
 395                 new_int = brcms_c_get_tx_power(wl->wlc);
 396                 if (new_int != conf->power_level)
 397                         wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
 398                                   "\n", __func__, conf->power_level,
 399                                   new_int);
 400         }
 401         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 402                 if (conf->channel_type == NL80211_CHAN_HT20 ||
 403                     conf->channel_type == NL80211_CHAN_NO_HT)
 404                         err = brcms_c_set_channel(wl->wlc,
 405                                                   conf->channel->hw_value);
 406                 else
 407                         err = -ENOTSUPP;
 408         }
 409         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
 410                 err = brcms_c_set_rate_limit(wl->wlc,
 411                                              conf->short_frame_max_tx_count,
 412                                              conf->long_frame_max_tx_count);
 413
 414  config_out:
 415         spin_unlock_bh(&wl->lock);
 416         return err;
 417 }
 418
 419 static void
 420 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
 421                         struct ieee80211_vif *vif,
 422                         struct ieee80211_bss_conf *info, u32 changed)
 423 {
 424         struct brcms_info *wl = hw->priv;
 425         struct wiphy *wiphy = hw->wiphy;
 426
 427         if (changed & BSS_CHANGED_ASSOC) {
 428                 /* association status changed (associated/disassociated)
 429                  * also implies a change in the AID.
 430                  */
 431                 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
 432                           __func__, info->assoc ? "" : "dis");
 433                 spin_lock_bh(&wl->lock);
 434                 brcms_c_associate_upd(wl->wlc, info->assoc);
 435                 spin_unlock_bh(&wl->lock);
 436         }
 437         if (changed & BSS_CHANGED_ERP_SLOT) {
 438                 s8 val;
 439
 440                 /* slot timing changed */
 441                 if (info->use_short_slot)
 442                         val = 1;
 443                 else
 444                         val = 0;
 445                 spin_lock_bh(&wl->lock);
 446                 brcms_c_set_shortslot_override(wl->wlc, val);
 447                 spin_unlock_bh(&wl->lock);
 448         }
 449
 450         if (changed & BSS_CHANGED_HT) {
 451                 /* 802.11n parameters changed */
 452                 u16 mode = info->ht_operation_mode;
 453
 454                 spin_lock_bh(&wl->lock);
 455                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
 456                         mode & IEEE80211_HT_OP_MODE_PROTECTION);
 457                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
 458                         mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 459                 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
 460                         mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
 461                 spin_unlock_bh(&wl->lock);
 462         }
 463         if (changed & BSS_CHANGED_BASIC_RATES) {
 464                 struct ieee80211_supported_band *bi;
 465                 u32 br_mask, i;
 466                 u16 rate;
 467                 struct brcm_rateset rs;
 468                 int error;
 469
 470                 /* retrieve the current rates */
 471                 spin_lock_bh(&wl->lock);
 472                 brcms_c_get_current_rateset(wl->wlc, &rs);
 473                 spin_unlock_bh(&wl->lock);
 474
 475                 br_mask = info->basic_rates;
 476                 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
 477                 for (i = 0; i < bi->n_bitrates; i++) {
 478                         /* convert to internal rate value */
 479                         rate = (bi->bitrates[i].bitrate << 1) / 10;
 480
 481                         /* set/clear basic rate flag */
 482                         brcms_set_basic_rate(&rs, rate, br_mask & 1);
 483                         br_mask >>= 1;
 484                 }
 485
 486                 /* update the rate set */
 487                 spin_lock_bh(&wl->lock);
 488                 error = brcms_c_set_rateset(wl->wlc, &rs);
 489                 spin_unlock_bh(&wl->lock);
 490                 if (error)
 491                         wiphy_err(wiphy, "changing basic rates failed: %d\n",
 492                                   error);
 493         }
 494         if (changed & BSS_CHANGED_BEACON_INT) {
 495                 /* Beacon interval changed */
 496                 spin_lock_bh(&wl->lock);
 497                 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
 498                 spin_unlock_bh(&wl->lock);
 499         }
 500         if (changed & BSS_CHANGED_BSSID) {
 501                 /* BSSID changed, for whatever reason (IBSS and managed mode) */
 502                 spin_lock_bh(&wl->lock);
 503                 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
 504                 spin_unlock_bh(&wl->lock);
 505         }
 506         if (changed & BSS_CHANGED_BEACON)
 507                 /* Beacon data changed, retrieve new beacon (beaconing modes) */
 508                 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
 509
 510         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 511                 /* Beaconing should be enabled/disabled (beaconing modes) */
 512                 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
 513                           info->enable_beacon ? "true" : "false");
 514         }
 515
 516         if (changed & BSS_CHANGED_CQM) {
 517                 /* Connection quality monitor config changed */
 518                 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
 519                           " (implement)\n", __func__, info->cqm_rssi_thold,
 520                           info->cqm_rssi_hyst);
 521         }
 522
 523         if (changed & BSS_CHANGED_IBSS) {
 524                 /* IBSS join status changed */
 525                 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
 526                           info->ibss_joined ? "true" : "false");
 527         }
 528
 529         if (changed & BSS_CHANGED_ARP_FILTER) {
 530                 /* Hardware ARP filter address list or state changed */
 531                 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
 532                           " (implement)\n", __func__, info->arp_filter_enabled ?
 533                           "true" : "false", info->arp_addr_cnt);
 534         }
 535
 536         if (changed & BSS_CHANGED_QOS) {
 537                 /*
 538                  * QoS for this association was enabled/disabled.
 539                  * Note that it is only ever disabled for station mode.
 540                  */
 541                 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
 542                           info->qos ? "true" : "false");
 543         }
 544         return;
 545 }
 546
 547 static void
 548 brcms_ops_configure_filter(struct ieee80211_hw *hw,
 549                         unsigned int changed_flags,
 550                         unsigned int *total_flags, u64 multicast)
 551 {
 552         struct brcms_info *wl = hw->priv;
 553         struct wiphy *wiphy = hw->wiphy;
 554
 555         changed_flags &= MAC_FILTERS;
 556         *total_flags &= MAC_FILTERS;
 557
 558         if (changed_flags & FIF_PROMISC_IN_BSS)
 559                 wiphy_dbg(wiphy, "FIF_PROMISC_IN_BSS\n");
 560         if (changed_flags & FIF_ALLMULTI)
 561                 wiphy_dbg(wiphy, "FIF_ALLMULTI\n");
 562         if (changed_flags & FIF_FCSFAIL)
 563                 wiphy_dbg(wiphy, "FIF_FCSFAIL\n");
 564         if (changed_flags & FIF_CONTROL)
 565                 wiphy_dbg(wiphy, "FIF_CONTROL\n");
 566         if (changed_flags & FIF_OTHER_BSS)
 567                 wiphy_dbg(wiphy, "FIF_OTHER_BSS\n");
 568         if (changed_flags & FIF_PSPOLL)
 569                 wiphy_dbg(wiphy, "FIF_PSPOLL\n");
 570         if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
 571                 wiphy_dbg(wiphy, "FIF_BCN_PRBRESP_PROMISC\n");
 572
 573         spin_lock_bh(&wl->lock);
 574         brcms_c_mac_promisc(wl->wlc, *total_flags);
 575         spin_unlock_bh(&wl->lock);
 576         return;
 577 }
 578
 579 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
 580 {
 581         struct brcms_info *wl = hw->priv;
 582         spin_lock_bh(&wl->lock);
 583         brcms_c_scan_start(wl->wlc);
 584         spin_unlock_bh(&wl->lock);
 585         return;
 586 }
 587
 588 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
 589 {
 590         struct brcms_info *wl = hw->priv;
 591         spin_lock_bh(&wl->lock);
 592         brcms_c_scan_stop(wl->wlc);
 593         spin_unlock_bh(&wl->lock);
 594         return;
 595 }
 596
 597 static int
 598 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 599                   const struct ieee80211_tx_queue_params *params)
 600 {
 601         struct brcms_info *wl = hw->priv;
 602
 603         spin_lock_bh(&wl->lock);
 604         brcms_c_wme_setparams(wl->wlc, queue, params, true);
 605         spin_unlock_bh(&wl->lock);
 606
 607         return 0;
 608 }
 609
 610 static int
 611 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 612                struct ieee80211_sta *sta)
 613 {
 614         struct brcms_info *wl = hw->priv;
 615         struct scb *scb = &wl->wlc->pri_scb;
 616
 617         brcms_c_init_scb(scb);
 618
 619         wl->pub->global_ampdu = &(scb->scb_ampdu);
 620         wl->pub->global_ampdu->scb = scb;
 621         wl->pub->global_ampdu->max_pdu = 16;
 622
 623         /*
 624          * minstrel_ht initiates addBA on our behalf by calling
 625          * ieee80211_start_tx_ba_session()
 626          */
 627         return 0;
 628 }
 629
 630 static int
 631 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 632                     struct ieee80211_vif *vif,
 633                     enum ieee80211_ampdu_mlme_action action,
 634                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 635                     u8 buf_size)
 636 {
 637         struct brcms_info *wl = hw->priv;
 638         struct scb *scb = &wl->wlc->pri_scb;
 639         int status;
 640
 641         if (WARN_ON(scb->magic != SCB_MAGIC))
 642                 return -EIDRM;
 643         switch (action) {
 644         case IEEE80211_AMPDU_RX_START:
 645                 break;
 646         case IEEE80211_AMPDU_RX_STOP:
 647                 break;
 648         case IEEE80211_AMPDU_TX_START:
 649                 spin_lock_bh(&wl->lock);
 650                 status = brcms_c_aggregatable(wl->wlc, tid);
 651                 spin_unlock_bh(&wl->lock);
 652                 if (!status) {
 653                         wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
 654                                   tid);
 655                         return -EINVAL;
 656                 }
 657                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 658                 break;
 659
 660         case IEEE80211_AMPDU_TX_STOP:
 661                 spin_lock_bh(&wl->lock);
 662                 brcms_c_ampdu_flush(wl->wlc, sta, tid);
 663                 spin_unlock_bh(&wl->lock);
 664                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 665                 break;
 666         case IEEE80211_AMPDU_TX_OPERATIONAL:
 667                 /*
 668                  * BA window size from ADDBA response ('buf_size') defines how
 669                  * many outstanding MPDUs are allowed for the BA stream by
 670                  * recipient and traffic class. 'ampdu_factor' gives maximum
 671                  * AMPDU size.
 672                  */
 673                 spin_lock_bh(&wl->lock);
 674                 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
 675                         (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 676                          sta->ht_cap.ampdu_factor)) - 1);
 677                 spin_unlock_bh(&wl->lock);
 678                 /* Power save wakeup */
 679                 break;
 680         default:
 681                 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
 682                           __func__);
 683         }
 684
 685         return 0;
 686 }
 687
 688 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
 689 {
 690         struct brcms_info *wl = hw->priv;
 691         bool blocked;
 692
 693         spin_lock_bh(&wl->lock);
 694         blocked = brcms_c_check_radio_disabled(wl->wlc);
 695         spin_unlock_bh(&wl->lock);
 696
 697         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
 698 }
 699
 700 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
 701 {
 702         struct brcms_info *wl = hw->priv;
 703
 704         no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
 705
 706         /* wait for packet queue and dma fifos to run empty */
 707         spin_lock_bh(&wl->lock);
 708         brcms_c_wait_for_tx_completion(wl->wlc, drop);
 709         spin_unlock_bh(&wl->lock);
 710 }
 711
 712 static const struct ieee80211_ops brcms_ops = {
 713         .tx = brcms_ops_tx,
 714         .start = brcms_ops_start,
 715         .stop = brcms_ops_stop,
 716         .add_interface = brcms_ops_add_interface,
 717         .remove_interface = brcms_ops_remove_interface,
 718         .config = brcms_ops_config,
 719         .bss_info_changed = brcms_ops_bss_info_changed,
 720         .configure_filter = brcms_ops_configure_filter,
 721         .sw_scan_start = brcms_ops_sw_scan_start,
 722         .sw_scan_complete = brcms_ops_sw_scan_complete,
 723         .conf_tx = brcms_ops_conf_tx,
 724         .sta_add = brcms_ops_sta_add,
 725         .ampdu_action = brcms_ops_ampdu_action,
 726         .rfkill_poll = brcms_ops_rfkill_poll,
 727         .flush = brcms_ops_flush,
 728 };
 729
 730 void brcms_dpc(unsigned long data)
 731 {
 732         struct brcms_info *wl;
 733
 734         wl = (struct brcms_info *) data;
 735
 736         spin_lock_bh(&wl->lock);
 737
 738         /* call the common second level interrupt handler */
 739         if (wl->pub->up) {
 740                 if (wl->resched) {
 741                         unsigned long flags;
 742
 743                         spin_lock_irqsave(&wl->isr_lock, flags);
 744                         brcms_c_intrsupd(wl->wlc);
 745                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 746                 }
 747
 748                 wl->resched = brcms_c_dpc(wl->wlc, true);
 749         }
 750
 751         /* brcms_c_dpc() may bring the driver down */
 752         if (!wl->pub->up)
 753                 goto done;
 754
 755         /* re-schedule dpc */
 756         if (wl->resched)
 757                 tasklet_schedule(&wl->tasklet);
 758         else
 759                 /* re-enable interrupts */
 760                 brcms_intrson(wl);
 761
 762  done:
 763         spin_unlock_bh(&wl->lock);
 764 }
 765
 766 /*
 767  * Precondition: Since this function is called in brcms_pci_probe() context,
 768  * no locking is required.
 769  */
 770 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 771 {
 772         int status;
 773         struct device *device = &pdev->dev;
 774         char fw_name[100];
 775         int i;
 776
 777         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 778         for (i = 0; i < MAX_FW_IMAGES; i++) {
 779                 if (brcms_firmwares[i] == NULL)
 780                         break;
 781                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 782                         UCODE_LOADER_API_VER);
 783                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 784                 if (status) {
 785                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 786                                   KBUILD_MODNAME, fw_name);
 787                         return status;
 788                 }
 789                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 790                         UCODE_LOADER_API_VER);
 791                 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
 792                 if (status) {
 793                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 794                                   KBUILD_MODNAME, fw_name);
 795                         return status;
 796                 }
 797                 wl->fw.hdr_num_entries[i] =
 798                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 799         }
 800         wl->fw.fw_cnt = i;
 801         return brcms_ucode_data_init(wl, &wl->ucode);
 802 }
 803
 804 /*
 805  * Precondition: Since this function is called in brcms_pci_probe() context,
 806  * no locking is required.
 807  */
 808 static void brcms_release_fw(struct brcms_info *wl)
 809 {
 810         int i;
 811         for (i = 0; i < MAX_FW_IMAGES; i++) {
 812                 release_firmware(wl->fw.fw_bin[i]);
 813                 release_firmware(wl->fw.fw_hdr[i]);
 814         }
 815 }
 816
 817 /**
 818  * This function frees the WL per-device resources.
 819  *
 820  * This function frees resources owned by the WL device pointed to
 821  * by the wl parameter.
 822  *
 823  * precondition: can both be called locked and unlocked
 824  *
 825  */
 826 static void brcms_free(struct brcms_info *wl)
 827 {
 828         struct brcms_timer *t, *next;
 829
 830         /* free ucode data */
 831         if (wl->fw.fw_cnt)
 832                 brcms_ucode_data_free(&wl->ucode);
 833         if (wl->irq)
 834                 free_irq(wl->irq, wl);
 835
 836         /* kill dpc */
 837         tasklet_kill(&wl->tasklet);
 838
 839         if (wl->pub)
 840                 brcms_c_module_unregister(wl->pub, "linux", wl);
 841
 842         /* free common resources */
 843         if (wl->wlc) {
 844                 brcms_c_detach(wl->wlc);
 845                 wl->wlc = NULL;
 846                 wl->pub = NULL;
 847         }
 848
 849         /* virtual interface deletion is deferred so we cannot spinwait */
 850
 851         /* wait for all pending callbacks to complete */
 852         while (atomic_read(&wl->callbacks) > 0)
 853                 schedule();
 854
 855         /* free timers */
 856         for (t = wl->timers; t; t = next) {
 857                 next = t->next;
 858 #ifdef DEBUG
 859                 kfree(t->name);
 860 #endif
 861                 kfree(t);
 862         }
 863 }
 864
 865 /*
 866 * called from both kernel as from this kernel module (error flow on attach)
 867 * precondition: perimeter lock is not acquired.
 868 */
 869 static void brcms_remove(struct bcma_device *pdev)
 870 {
 871         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 872         struct brcms_info *wl = hw->priv;
 873
 874         if (wl->wlc) {
 875                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 876                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 877                 ieee80211_unregister_hw(hw);
 878         }
 879
 880         brcms_free(wl);
 881
 882         bcma_set_drvdata(pdev, NULL);
 883         ieee80211_free_hw(hw);
 884 }
 885
 886 static irqreturn_t brcms_isr(int irq, void *dev_id)
 887 {
 888         struct brcms_info *wl;
 889         bool ours, wantdpc;
 890
 891         wl = (struct brcms_info *) dev_id;
 892
 893         spin_lock(&wl->isr_lock);
 894
 895         /* call common first level interrupt handler */
 896         ours = brcms_c_isr(wl->wlc, &wantdpc);
 897         if (ours) {
 898                 /* if more to do... */
 899                 if (wantdpc) {
 900
 901                         /* ...and call the second level interrupt handler */
 902                         /* schedule dpc */
 903                         tasklet_schedule(&wl->tasklet);
 904                 }
 905         }
 906
 907         spin_unlock(&wl->isr_lock);
 908
 909         return IRQ_RETVAL(ours);
 910 }
 911
 912 /*
 913  * is called in brcms_pci_probe() context, therefore no locking required.
 914  */
 915 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 916 {
 917         struct brcms_info *wl = hw->priv;
 918         struct brcms_c_info *wlc = wl->wlc;
 919         struct ieee80211_supported_band *band;
 920         int has_5g = 0;
 921         u16 phy_type;
 922
 923         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 924         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 925
 926         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 927         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 928                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 929                 *band = brcms_band_2GHz_nphy_template;
 930                 if (phy_type == PHY_TYPE_LCN) {
 931                         /* Single stream */
 932                         band->ht_cap.mcs.rx_mask[1] = 0;
 933                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 934                 }
 935                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 936         } else {
 937                 return -EPERM;
 938         }
 939
 940         /* Assume all bands use the same phy.  True for 11n devices. */
 941         if (wl->pub->_nbands > 1) {
 942                 has_5g++;
 943                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 944                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 945                         *band = brcms_band_5GHz_nphy_template;
 946                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 947                 } else {
 948                         return -EPERM;
 949                 }
 950         }
 951         return 0;
 952 }
 953
 954 /*
 955  * is called in brcms_pci_probe() context, therefore no locking required.
 956  */
 957 static int ieee_hw_init(struct ieee80211_hw *hw)
 958 {
 959         hw->flags = IEEE80211_HW_SIGNAL_DBM
 960             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 961             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 962             | IEEE80211_HW_AMPDU_AGGREGATION;
 963
 964         hw->extra_tx_headroom = brcms_c_get_header_len();
 965         hw->queues = N_TX_QUEUES;
 966         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 967
 968         /* channel change time is dependent on chip and band  */
 969         hw->channel_change_time = 7 * 1000;
 970         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 971
 972         hw->rate_control_algorithm = "minstrel_ht";
 973
 974         hw->sta_data_size = 0;
 975         return ieee_hw_rate_init(hw);
 976 }
 977
 978 /**
 979  * attach to the WL device.
 980  *
 981  * Attach to the WL device identified by vendor and device parameters.
 982  * regs is a host accessible memory address pointing to WL device registers.
 983  *
 984  * brcms_attach is not defined as static because in the case where no bus
 985  * is defined, wl_attach will never be called, and thus, gcc will issue
 986  * a warning that this function is defined but not used if we declare
 987  * it as static.
 988  *
 989  *
 990  * is called in brcms_bcma_probe() context, therefore no locking required.
 991  */
 992 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
 993 {
 994         struct brcms_info *wl = NULL;
 995         int unit, err;
 996         struct ieee80211_hw *hw;
 997         u8 perm[ETH_ALEN];
 998
 999         unit = n_adapters_found;
1000         err = 0;
1001
1002         if (unit < 0)
1003                 return NULL;
1004
1005         /* allocate private info */
1006         hw = bcma_get_drvdata(pdev);
1007         if (hw != NULL)
1008                 wl = hw->priv;
1009         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1010                 return NULL;
1011         wl->wiphy = hw->wiphy;
1012
1013         atomic_set(&wl->callbacks, 0);
1014
1015         /* setup the bottom half handler */
1016         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1017
1018         spin_lock_init(&wl->lock);
1019         spin_lock_init(&wl->isr_lock);
1020
1021         /* prepare ucode */
1022         if (brcms_request_fw(wl, pdev) < 0) {
1023                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1024                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1025                 brcms_release_fw(wl);
1026                 brcms_remove(pdev);
1027                 return NULL;
1028         }
1029
1030         /* common load-time initialization */
1031         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1032         brcms_release_fw(wl);
1033         if (!wl->wlc) {
1034                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1035                           KBUILD_MODNAME, err);
1036                 goto fail;
1037         }
1038         wl->pub = brcms_c_pub(wl->wlc);
1039
1040         wl->pub->ieee_hw = hw;
1041
1042         /* register our interrupt handler */
1043         if (request_irq(pdev->irq, brcms_isr,
1044                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1045                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1046                 goto fail;
1047         }
1048         wl->irq = pdev->irq;
1049
1050         /* register module */
1051         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1052
1053         if (ieee_hw_init(hw)) {
1054                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1055                           __func__);
1056                 goto fail;
1057         }
1058
1059         brcms_c_regd_init(wl->wlc);
1060
1061         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1062         if (WARN_ON(!is_valid_ether_addr(perm)))
1063                 goto fail;
1064         SET_IEEE80211_PERM_ADDR(hw, perm);
1065
1066         err = ieee80211_register_hw(hw);
1067         if (err)
1068                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1069                           "%d\n", __func__, err);
1070
1071         if (wl->pub->srom_ccode[0] &&
1072             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1073                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1074
1075         n_adapters_found++;
1076         return wl;
1077
1078 fail:
1079         brcms_free(wl);
1080         return NULL;
1081 }
1082
1083
1084
1085 /**
1086  * determines if a device is a WL device, and if so, attaches it.
1087  *
1088  * This function determines if a device pointed to by pdev is a WL device,
1089  * and if so, performs a brcms_attach() on it.
1090  *
1091  * Perimeter lock is initialized in the course of this function.
1092  */
1093 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1094 {
1095         struct brcms_info *wl;
1096         struct ieee80211_hw *hw;
1097
1098         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1099                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1100                  pdev->irq);
1101
1102         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1103             (pdev->id.id != BCMA_CORE_80211))
1104                 return -ENODEV;
1105
1106         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1107         if (!hw) {
1108                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1109                 return -ENOMEM;
1110         }
1111
1112         SET_IEEE80211_DEV(hw, &pdev->dev);
1113
1114         bcma_set_drvdata(pdev, hw);
1115
1116         memset(hw->priv, 0, sizeof(*wl));
1117
1118         wl = brcms_attach(pdev);
1119         if (!wl) {
1120                 pr_err("%s: brcms_attach failed!\n", __func__);
1121                 return -ENODEV;
1122         }
1123         return 0;
1124 }
1125
1126 static int brcms_suspend(struct bcma_device *pdev)
1127 {
1128         struct brcms_info *wl;
1129         struct ieee80211_hw *hw;
1130
1131         hw = bcma_get_drvdata(pdev);
1132         wl = hw->priv;
1133         if (!wl) {
1134                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1135                        __func__);
1136                 return -ENODEV;
1137         }
1138
1139         /* only need to flag hw is down for proper resume */
1140         spin_lock_bh(&wl->lock);
1141         wl->pub->hw_up = false;
1142         spin_unlock_bh(&wl->lock);
1143
1144         pr_debug("brcms_suspend ok\n");
1145
1146         return 0;
1147 }
1148
1149 static int brcms_resume(struct bcma_device *pdev)
1150 {
1151         pr_debug("brcms_resume ok\n");
1152         return 0;
1153 }
1154
1155 static struct bcma_driver brcms_bcma_driver = {
1156         .name     = KBUILD_MODNAME,
1157         .probe    = brcms_bcma_probe,
1158         .suspend  = brcms_suspend,
1159         .resume   = brcms_resume,
1160         .remove   = __devexit_p(brcms_remove),
1161         .id_table = brcms_coreid_table,
1162 };
1163
1164 /**
1165  * This is the main entry point for the brcmsmac driver.
1166  *
1167  * This function is scheduled upon module initialization and
1168  * does the driver registration, which result in brcms_bcma_probe()
1169  * call resulting in the driver bringup.
1170  */
1171 static void brcms_driver_init(struct work_struct *work)
1172 {
1173         int error;
1174
1175         error = bcma_driver_register(&brcms_bcma_driver);
1176         if (error)
1177                 pr_err("%s: register returned %d\n", __func__, error);
1178 }
1179
1180 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1181
1182 static int __init brcms_module_init(void)
1183 {
1184 #ifdef DEBUG
1185         if (msglevel != 0xdeadbeef)
1186                 brcm_msg_level = msglevel;
1187 #endif
1188         if (!schedule_work(&brcms_driver_work))
1189                 return -EBUSY;
1190
1191         return 0;
1192 }
1193
1194 /**
1195  * This function unloads the brcmsmac driver from the system.
1196  *
1197  * This function unconditionally unloads the brcmsmac driver module from the
1198  * system.
1199  *
1200  */
1201 static void __exit brcms_module_exit(void)
1202 {
1203         cancel_work_sync(&brcms_driver_work);
1204         bcma_driver_unregister(&brcms_bcma_driver);
1205 }
1206
1207 module_init(brcms_module_init);
1208 module_exit(brcms_module_exit);
1209
1210 /*
1211  * precondition: perimeter lock has been acquired
1212  */
1213 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1214                          bool state, int prio)
1215 {
1216         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1217 }
1218
1219 /*
1220  * precondition: perimeter lock has been acquired
1221  */
1222 void brcms_init(struct brcms_info *wl)
1223 {
1224         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1225         brcms_reset(wl);
1226         brcms_c_init(wl->wlc, wl->mute_tx);
1227 }
1228
1229 /*
1230  * precondition: perimeter lock has been acquired
1231  */
1232 uint brcms_reset(struct brcms_info *wl)
1233 {
1234         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1235         brcms_c_reset(wl->wlc);
1236
1237         /* dpc will not be rescheduled */
1238         wl->resched = false;
1239
1240         /* inform publicly that interface is down */
1241         wl->pub->up = false;
1242
1243         return 0;
1244 }
1245
1246 void brcms_fatal_error(struct brcms_info *wl)
1247 {
1248         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1249                   wl->wlc->pub->unit);
1250         brcms_reset(wl);
1251         ieee80211_restart_hw(wl->pub->ieee_hw);
1252 }
1253
1254 /*
1255  * These are interrupt on/off entry points. Disable interrupts
1256  * during interrupt state transition.
1257  */
1258 void brcms_intrson(struct brcms_info *wl)
1259 {
1260         unsigned long flags;
1261
1262         spin_lock_irqsave(&wl->isr_lock, flags);
1263         brcms_c_intrson(wl->wlc);
1264         spin_unlock_irqrestore(&wl->isr_lock, flags);
1265 }
1266
1267 u32 brcms_intrsoff(struct brcms_info *wl)
1268 {
1269         unsigned long flags;
1270         u32 status;
1271
1272         spin_lock_irqsave(&wl->isr_lock, flags);
1273         status = brcms_c_intrsoff(wl->wlc);
1274         spin_unlock_irqrestore(&wl->isr_lock, flags);
1275         return status;
1276 }
1277
1278 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1279 {
1280         unsigned long flags;
1281
1282         spin_lock_irqsave(&wl->isr_lock, flags);
1283         brcms_c_intrsrestore(wl->wlc, macintmask);
1284         spin_unlock_irqrestore(&wl->isr_lock, flags);
1285 }
1286
1287 /*
1288  * precondition: perimeter lock has been acquired
1289  */
1290 int brcms_up(struct brcms_info *wl)
1291 {
1292         int error = 0;
1293
1294         if (wl->pub->up)
1295                 return 0;
1296
1297         error = brcms_c_up(wl->wlc);
1298
1299         return error;
1300 }
1301
1302 /*
1303  * precondition: perimeter lock has been acquired
1304  */
1305 void brcms_down(struct brcms_info *wl)
1306 {
1307         uint callbacks, ret_val = 0;
1308
1309         /* call common down function */
1310         ret_val = brcms_c_down(wl->wlc);
1311         callbacks = atomic_read(&wl->callbacks) - ret_val;
1312
1313         /* wait for down callbacks to complete */
1314         spin_unlock_bh(&wl->lock);
1315
1316         /* For HIGH_only driver, it's important to actually schedule other work,
1317          * not just spin wait since everything runs at schedule level
1318          */
1319         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1320
1321         spin_lock_bh(&wl->lock);
1322 }
1323
1324 /*
1325 * precondition: perimeter lock is not acquired
1326  */
1327 static void _brcms_timer(struct work_struct *work)
1328 {
1329         struct brcms_timer *t = container_of(work, struct brcms_timer,
1330                                              dly_wrk.work);
1331
1332         spin_lock_bh(&t->wl->lock);
1333
1334         if (t->set) {
1335                 if (t->periodic) {
1336                         atomic_inc(&t->wl->callbacks);
1337                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1338                                                      &t->dly_wrk,
1339                                                      msecs_to_jiffies(t->ms));
1340                 } else {
1341                         t->set = false;
1342                 }
1343
1344                 t->fn(t->arg);
1345         }
1346
1347         atomic_dec(&t->wl->callbacks);
1348
1349         spin_unlock_bh(&t->wl->lock);
1350 }
1351
1352 /*
1353  * Adds a timer to the list. Caller supplies a timer function.
1354  * Is called from wlc.
1355  *
1356  * precondition: perimeter lock has been acquired
1357  */
1358 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1359                                      void (*fn) (void *arg),
1360                                      void *arg, const char *name)
1361 {
1362         struct brcms_timer *t;
1363
1364         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1365         if (!t)
1366                 return NULL;
1367
1368         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1369         t->wl = wl;
1370         t->fn = fn;
1371         t->arg = arg;
1372         t->next = wl->timers;
1373         wl->timers = t;
1374
1375 #ifdef DEBUG
1376         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1377         if (t->name)
1378                 strcpy(t->name, name);
1379 #endif
1380
1381         return t;
1382 }
1383
1384 /*
1385  * adds only the kernel timer since it's going to be more accurate
1386  * as well as it's easier to make it periodic
1387  *
1388  * precondition: perimeter lock has been acquired
1389  */
1390 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1391 {
1392         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1393
1394 #ifdef DEBUG
1395         if (t->set)
1396                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1397                           __func__, t->name, periodic);
1398 #endif
1399         t->ms = ms;
1400         t->periodic = (bool) periodic;
1401         t->set = true;
1402
1403         atomic_inc(&t->wl->callbacks);
1404
1405         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1406 }
1407
1408 /*
1409  * return true if timer successfully deleted, false if still pending
1410  *
1411  * precondition: perimeter lock has been acquired
1412  */
1413 bool brcms_del_timer(struct brcms_timer *t)
1414 {
1415         if (t->set) {
1416                 t->set = false;
1417                 if (!cancel_delayed_work(&t->dly_wrk))
1418                         return false;
1419
1420                 atomic_dec(&t->wl->callbacks);
1421         }
1422
1423         return true;
1424 }
1425
1426 /*
1427  * precondition: perimeter lock has been acquired
1428  */
1429 void brcms_free_timer(struct brcms_timer *t)
1430 {
1431         struct brcms_info *wl = t->wl;
1432         struct brcms_timer *tmp;
1433
1434         /* delete the timer in case it is active */
1435         brcms_del_timer(t);
1436
1437         if (wl->timers == t) {
1438                 wl->timers = wl->timers->next;
1439 #ifdef DEBUG
1440                 kfree(t->name);
1441 #endif
1442                 kfree(t);
1443                 return;
1444
1445         }
1446
1447         tmp = wl->timers;
1448         while (tmp) {
1449                 if (tmp->next == t) {
1450                         tmp->next = t->next;
1451 #ifdef DEBUG
1452                         kfree(t->name);
1453 #endif
1454                         kfree(t);
1455                         return;
1456                 }
1457                 tmp = tmp->next;
1458         }
1459
1460 }
1461
1462 /*
1463  * precondition: perimeter lock has been acquired
1464  */
1465 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1466 {
1467         int i, entry;
1468         const u8 *pdata;
1469         struct firmware_hdr *hdr;
1470         for (i = 0; i < wl->fw.fw_cnt; i++) {
1471                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1472                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1473                      entry++, hdr++) {
1474                         u32 len = le32_to_cpu(hdr->len);
1475                         if (le32_to_cpu(hdr->idx) == idx) {
1476                                 pdata = wl->fw.fw_bin[i]->data +
1477                                         le32_to_cpu(hdr->offset);
1478                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1479                                 if (*pbuf == NULL)
1480                                         goto fail;
1481
1482                                 return 0;
1483                         }
1484                 }
1485         }
1486         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1487                   idx);
1488         *pbuf = NULL;
1489 fail:
1490         return -ENODATA;
1491 }
1492
1493 /*
1494  * Precondition: Since this function is called in brcms_bcma_probe() context,
1495  * no locking is required.
1496  */
1497 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1498 {
1499         int i, entry;
1500         const u8 *pdata;
1501         struct firmware_hdr *hdr;
1502         for (i = 0; i < wl->fw.fw_cnt; i++) {
1503                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1504                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1505                      entry++, hdr++) {
1506                         if (le32_to_cpu(hdr->idx) == idx) {
1507                                 pdata = wl->fw.fw_bin[i]->data +
1508                                         le32_to_cpu(hdr->offset);
1509                                 if (le32_to_cpu(hdr->len) != 4) {
1510                                         wiphy_err(wl->wiphy,
1511                                                   "ERROR: fw hdr len\n");
1512                                         return -ENOMSG;
1513                                 }
1514                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1515                                 return 0;
1516                         }
1517                 }
1518         }
1519         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1520         return -ENOMSG;
1521 }
1522
1523 /*
1524  * precondition: can both be called locked and unlocked
1525  */
1526 void brcms_ucode_free_buf(void *p)
1527 {
1528         kfree(p);
1529 }
1530
1531 /*
1532  * checks validity of all firmware images loaded from user space
1533  *
1534  * Precondition: Since this function is called in brcms_bcma_probe() context,
1535  * no locking is required.
1536  */
1537 int brcms_check_firmwares(struct brcms_info *wl)
1538 {
1539         int i;
1540         int entry;
1541         int rc = 0;
1542         const struct firmware *fw;
1543         const struct firmware *fw_hdr;
1544         struct firmware_hdr *ucode_hdr;
1545         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1546                 fw =  wl->fw.fw_bin[i];
1547                 fw_hdr = wl->fw.fw_hdr[i];
1548                 if (fw == NULL && fw_hdr == NULL) {
1549                         break;
1550                 } else if (fw == NULL || fw_hdr == NULL) {
1551                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1552                                   __func__);
1553                         rc = -EBADF;
1554                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1555                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1556                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1557                                 sizeof(struct firmware_hdr));
1558                         rc = -EBADF;
1559                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1560                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1561                                   "%zu\n", __func__, fw->size);
1562                         rc = -EBADF;
1563                 } else {
1564                         /* check if ucode section overruns firmware image */
1565                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1566                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1567                              !rc; entry++, ucode_hdr++) {
1568                                 if (le32_to_cpu(ucode_hdr->offset) +
1569                                     le32_to_cpu(ucode_hdr->len) >
1570                                     fw->size) {
1571                                         wiphy_err(wl->wiphy,
1572                                                   "%s: conflicting bin/hdr\n",
1573                                                   __func__);
1574                                         rc = -EBADF;
1575                                 }
1576                         }
1577                 }
1578         }
1579         if (rc == 0 && wl->fw.fw_cnt != i) {
1580                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1581                         wl->fw.fw_cnt);
1582                 rc = -EBADF;
1583         }
1584         return rc;
1585 }
1586
1587 /*
1588  * precondition: perimeter lock has been acquired
1589  */
1590 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1591 {
1592         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1593
1594         spin_unlock_bh(&wl->lock);
1595         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1596         if (blocked)
1597                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1598         spin_lock_bh(&wl->lock);
1599         return blocked;
1600 }
1601
1602 /*
1603  * precondition: perimeter lock has been acquired
1604  */
1605 void brcms_msleep(struct brcms_info *wl, uint ms)
1606 {
1607         spin_unlock_bh(&wl->lock);
1608         msleep(ms);
1609         spin_lock_bh(&wl->lock);
1610 }