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
  90
  91 /* recognized BCMA Core IDs */
  92 static struct bcma_device_id brcms_coreid_table[] = {
  93         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
  94         BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
  95         BCMA_CORETABLE_END
  96 };
  97 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
  98
  99 #ifdef DEBUG
 100 static int msglevel = 0xdeadbeef;
 101 module_param(msglevel, int, 0);
 102 #endif                          /* DEBUG */
 103
 104 static struct ieee80211_channel brcms_2ghz_chantable[] = {
 105         CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
 106         CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
 107         CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
 108         CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
 109         CHAN2GHZ(5, 2432, 0),
 110         CHAN2GHZ(6, 2437, 0),
 111         CHAN2GHZ(7, 2442, 0),
 112         CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
 113         CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
 114         CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
 115         CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
 116         CHAN2GHZ(12, 2467,
 117                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 118                  IEEE80211_CHAN_NO_HT40PLUS),
 119         CHAN2GHZ(13, 2472,
 120                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 121                  IEEE80211_CHAN_NO_HT40PLUS),
 122         CHAN2GHZ(14, 2484,
 123                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
 124                  IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 125 };
 126
 127 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
 128         /* UNII-1 */
 129         CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
 130         CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
 131         CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
 132         CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
 133         /* UNII-2 */
 134         CHAN5GHZ(52,
 135                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 136                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 137         CHAN5GHZ(56,
 138                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 139                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 140         CHAN5GHZ(60,
 141                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 142                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 143         CHAN5GHZ(64,
 144                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 145                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 146         /* MID */
 147         CHAN5GHZ(100,
 148                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 149                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 150         CHAN5GHZ(104,
 151                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 152                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 153         CHAN5GHZ(108,
 154                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 155                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 156         CHAN5GHZ(112,
 157                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 158                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 159         CHAN5GHZ(116,
 160                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 161                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 162         CHAN5GHZ(120,
 163                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 164                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 165         CHAN5GHZ(124,
 166                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 167                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 168         CHAN5GHZ(128,
 169                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 170                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 171         CHAN5GHZ(132,
 172                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 173                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
 174         CHAN5GHZ(136,
 175                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 176                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
 177         CHAN5GHZ(140,
 178                  IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
 179                  IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
 180                  IEEE80211_CHAN_NO_HT40MINUS),
 181         /* UNII-3 */
 182         CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
 183         CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
 184         CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
 185         CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
 186         CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
 187 };
 188
 189 /*
 190  * The rate table is used for both 2.4G and 5G rates. The
 191  * latter being a subset as it does not support CCK rates.
 192  */
 193 static struct ieee80211_rate legacy_ratetable[] = {
 194         RATE(10, 0),
 195         RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
 196         RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
 197         RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
 198         RATE(60, 0),
 199         RATE(90, 0),
 200         RATE(120, 0),
 201         RATE(180, 0),
 202         RATE(240, 0),
 203         RATE(360, 0),
 204         RATE(480, 0),
 205         RATE(540, 0),
 206 };
 207
 208 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
 209         .band = IEEE80211_BAND_2GHZ,
 210         .channels = brcms_2ghz_chantable,
 211         .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
 212         .bitrates = legacy_ratetable,
 213         .n_bitrates = ARRAY_SIZE(legacy_ratetable),
 214         .ht_cap = {
 215                    /* from include/linux/ieee80211.h */
 216                    .cap = IEEE80211_HT_CAP_GRN_FLD |
 217                           IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
 218                    .ht_supported = true,
 219                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 220                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 221                    .mcs = {
 222                            /* placeholders for now */
 223                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 224                            .rx_highest = cpu_to_le16(500),
 225                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 226                    }
 227 };
 228
 229 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
 230         .band = IEEE80211_BAND_5GHZ,
 231         .channels = brcms_5ghz_nphy_chantable,
 232         .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
 233         .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
 234         .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
 235                         BRCMS_LEGACY_5G_RATE_OFFSET,
 236         .ht_cap = {
 237                    .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 238                           IEEE80211_HT_CAP_SGI_40,
 239                    .ht_supported = true,
 240                    .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 241                    .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
 242                    .mcs = {
 243                            /* placeholders for now */
 244                            .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
 245                            .rx_highest = cpu_to_le16(500),
 246                            .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
 247                    }
 248 };
 249
 250 /* flags the given rate in rateset as requested */
 251 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
 252 {
 253         u32 i;
 254
 255         for (i = 0; i < rs->count; i++) {
 256                 if (rate != (rs->rates[i] & 0x7f))
 257                         continue;
 258
 259                 if (is_br)
 260                         rs->rates[i] |= BRCMS_RATE_FLAG;
 261                 else
 262                         rs->rates[i] &= BRCMS_RATE_MASK;
 263                 return;
 264         }
 265 }
 266
 267 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 268 {
 269         struct brcms_info *wl = hw->priv;
 270         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 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         tx_info->rate_driver_data[0] = tx_info->control.sta;
 280  done:
 281         spin_unlock_bh(&wl->lock);
 282 }
 283
 284 static int brcms_ops_start(struct ieee80211_hw *hw)
 285 {
 286         struct brcms_info *wl = hw->priv;
 287         bool blocked;
 288         int err;
 289
 290         ieee80211_wake_queues(hw);
 291         spin_lock_bh(&wl->lock);
 292         blocked = brcms_rfkill_set_hw_state(wl);
 293         spin_unlock_bh(&wl->lock);
 294         if (!blocked)
 295                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 296
 297         spin_lock_bh(&wl->lock);
 298         /* avoid acknowledging frames before a non-monitor device is added */
 299         wl->mute_tx = true;
 300
 301         if (!wl->pub->up)
 302                 err = brcms_up(wl);
 303         else
 304                 err = -ENODEV;
 305         spin_unlock_bh(&wl->lock);
 306
 307         if (err != 0)
 308                 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
 309                           err);
 310         return err;
 311 }
 312
 313 static void brcms_ops_stop(struct ieee80211_hw *hw)
 314 {
 315         struct brcms_info *wl = hw->priv;
 316         int status;
 317
 318         ieee80211_stop_queues(hw);
 319
 320         if (wl->wlc == NULL)
 321                 return;
 322
 323         spin_lock_bh(&wl->lock);
 324         status = brcms_c_chipmatch(wl->wlc->hw->d11core);
 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 void brcms_dpc(unsigned long data)
 726 {
 727         struct brcms_info *wl;
 728
 729         wl = (struct brcms_info *) data;
 730
 731         spin_lock_bh(&wl->lock);
 732
 733         /* call the common second level interrupt handler */
 734         if (wl->pub->up) {
 735                 if (wl->resched) {
 736                         unsigned long flags;
 737
 738                         spin_lock_irqsave(&wl->isr_lock, flags);
 739                         brcms_c_intrsupd(wl->wlc);
 740                         spin_unlock_irqrestore(&wl->isr_lock, flags);
 741                 }
 742
 743                 wl->resched = brcms_c_dpc(wl->wlc, true);
 744         }
 745
 746         /* brcms_c_dpc() may bring the driver down */
 747         if (!wl->pub->up)
 748                 goto done;
 749
 750         /* re-schedule dpc */
 751         if (wl->resched)
 752                 tasklet_schedule(&wl->tasklet);
 753         else
 754                 /* re-enable interrupts */
 755                 brcms_intrson(wl);
 756
 757  done:
 758         spin_unlock_bh(&wl->lock);
 759 }
 760
 761 /*
 762  * Precondition: Since this function is called in brcms_pci_probe() context,
 763  * no locking is required.
 764  */
 765 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
 766 {
 767         int status;
 768         struct device *device = &pdev->dev;
 769         char fw_name[100];
 770         int i;
 771
 772         memset(&wl->fw, 0, sizeof(struct brcms_firmware));
 773         for (i = 0; i < MAX_FW_IMAGES; i++) {
 774                 if (brcms_firmwares[i] == NULL)
 775                         break;
 776                 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
 777                         UCODE_LOADER_API_VER);
 778                 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
 779                 if (status) {
 780                         wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
 781                                   KBUILD_MODNAME, fw_name);
 782                         return status;
 783                 }
 784                 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
 785                         UCODE_LOADER_API_VER);
 786                 status = request_firmware(&wl->fw.fw_hdr[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                 wl->fw.hdr_num_entries[i] =
 793                     wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
 794         }
 795         wl->fw.fw_cnt = i;
 796         return brcms_ucode_data_init(wl, &wl->ucode);
 797 }
 798
 799 /*
 800  * Precondition: Since this function is called in brcms_pci_probe() context,
 801  * no locking is required.
 802  */
 803 static void brcms_release_fw(struct brcms_info *wl)
 804 {
 805         int i;
 806         for (i = 0; i < MAX_FW_IMAGES; i++) {
 807                 release_firmware(wl->fw.fw_bin[i]);
 808                 release_firmware(wl->fw.fw_hdr[i]);
 809         }
 810 }
 811
 812 /**
 813  * This function frees the WL per-device resources.
 814  *
 815  * This function frees resources owned by the WL device pointed to
 816  * by the wl parameter.
 817  *
 818  * precondition: can both be called locked and unlocked
 819  *
 820  */
 821 static void brcms_free(struct brcms_info *wl)
 822 {
 823         struct brcms_timer *t, *next;
 824
 825         /* free ucode data */
 826         if (wl->fw.fw_cnt)
 827                 brcms_ucode_data_free(&wl->ucode);
 828         if (wl->irq)
 829                 free_irq(wl->irq, wl);
 830
 831         /* kill dpc */
 832         tasklet_kill(&wl->tasklet);
 833
 834         if (wl->pub)
 835                 brcms_c_module_unregister(wl->pub, "linux", wl);
 836
 837         /* free common resources */
 838         if (wl->wlc) {
 839                 brcms_c_detach(wl->wlc);
 840                 wl->wlc = NULL;
 841                 wl->pub = NULL;
 842         }
 843
 844         /* virtual interface deletion is deferred so we cannot spinwait */
 845
 846         /* wait for all pending callbacks to complete */
 847         while (atomic_read(&wl->callbacks) > 0)
 848                 schedule();
 849
 850         /* free timers */
 851         for (t = wl->timers; t; t = next) {
 852                 next = t->next;
 853 #ifdef DEBUG
 854                 kfree(t->name);
 855 #endif
 856                 kfree(t);
 857         }
 858 }
 859
 860 /*
 861 * called from both kernel as from this kernel module (error flow on attach)
 862 * precondition: perimeter lock is not acquired.
 863 */
 864 static void brcms_remove(struct bcma_device *pdev)
 865 {
 866         struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
 867         struct brcms_info *wl = hw->priv;
 868
 869         if (wl->wlc) {
 870                 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
 871                 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
 872                 ieee80211_unregister_hw(hw);
 873         }
 874
 875         brcms_free(wl);
 876
 877         bcma_set_drvdata(pdev, NULL);
 878         ieee80211_free_hw(hw);
 879 }
 880
 881 static irqreturn_t brcms_isr(int irq, void *dev_id)
 882 {
 883         struct brcms_info *wl;
 884         bool ours, wantdpc;
 885
 886         wl = (struct brcms_info *) dev_id;
 887
 888         spin_lock(&wl->isr_lock);
 889
 890         /* call common first level interrupt handler */
 891         ours = brcms_c_isr(wl->wlc, &wantdpc);
 892         if (ours) {
 893                 /* if more to do... */
 894                 if (wantdpc) {
 895
 896                         /* ...and call the second level interrupt handler */
 897                         /* schedule dpc */
 898                         tasklet_schedule(&wl->tasklet);
 899                 }
 900         }
 901
 902         spin_unlock(&wl->isr_lock);
 903
 904         return IRQ_RETVAL(ours);
 905 }
 906
 907 /*
 908  * is called in brcms_pci_probe() context, therefore no locking required.
 909  */
 910 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
 911 {
 912         struct brcms_info *wl = hw->priv;
 913         struct brcms_c_info *wlc = wl->wlc;
 914         struct ieee80211_supported_band *band;
 915         int has_5g = 0;
 916         u16 phy_type;
 917
 918         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 919         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 920
 921         phy_type = brcms_c_get_phy_type(wl->wlc, 0);
 922         if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 923                 band = &wlc->bandstate[BAND_2G_INDEX]->band;
 924                 *band = brcms_band_2GHz_nphy_template;
 925                 if (phy_type == PHY_TYPE_LCN) {
 926                         /* Single stream */
 927                         band->ht_cap.mcs.rx_mask[1] = 0;
 928                         band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
 929                 }
 930                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
 931         } else {
 932                 return -EPERM;
 933         }
 934
 935         /* Assume all bands use the same phy.  True for 11n devices. */
 936         if (wl->pub->_nbands > 1) {
 937                 has_5g++;
 938                 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
 939                         band = &wlc->bandstate[BAND_5G_INDEX]->band;
 940                         *band = brcms_band_5GHz_nphy_template;
 941                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
 942                 } else {
 943                         return -EPERM;
 944                 }
 945         }
 946         return 0;
 947 }
 948
 949 /*
 950  * is called in brcms_pci_probe() context, therefore no locking required.
 951  */
 952 static int ieee_hw_init(struct ieee80211_hw *hw)
 953 {
 954         hw->flags = IEEE80211_HW_SIGNAL_DBM
 955             /* | IEEE80211_HW_CONNECTION_MONITOR  What is this? */
 956             | IEEE80211_HW_REPORTS_TX_ACK_STATUS
 957             | IEEE80211_HW_AMPDU_AGGREGATION;
 958
 959         hw->extra_tx_headroom = brcms_c_get_header_len();
 960         hw->queues = N_TX_QUEUES;
 961         hw->max_rates = 2;      /* Primary rate and 1 fallback rate */
 962
 963         /* channel change time is dependent on chip and band  */
 964         hw->channel_change_time = 7 * 1000;
 965         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 966
 967         hw->rate_control_algorithm = "minstrel_ht";
 968
 969         hw->sta_data_size = 0;
 970         return ieee_hw_rate_init(hw);
 971 }
 972
 973 /**
 974  * attach to the WL device.
 975  *
 976  * Attach to the WL device identified by vendor and device parameters.
 977  * regs is a host accessible memory address pointing to WL device registers.
 978  *
 979  * brcms_attach is not defined as static because in the case where no bus
 980  * is defined, wl_attach will never be called, and thus, gcc will issue
 981  * a warning that this function is defined but not used if we declare
 982  * it as static.
 983  *
 984  *
 985  * is called in brcms_bcma_probe() context, therefore no locking required.
 986  */
 987 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
 988 {
 989         struct brcms_info *wl = NULL;
 990         int unit, err;
 991         struct ieee80211_hw *hw;
 992         u8 perm[ETH_ALEN];
 993
 994         unit = n_adapters_found;
 995         err = 0;
 996
 997         if (unit < 0)
 998                 return NULL;
 999
1000         /* allocate private info */
1001         hw = bcma_get_drvdata(pdev);
1002         if (hw != NULL)
1003                 wl = hw->priv;
1004         if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1005                 return NULL;
1006         wl->wiphy = hw->wiphy;
1007
1008         atomic_set(&wl->callbacks, 0);
1009
1010         /* setup the bottom half handler */
1011         tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1012
1013         spin_lock_init(&wl->lock);
1014         spin_lock_init(&wl->isr_lock);
1015
1016         /* prepare ucode */
1017         if (brcms_request_fw(wl, pdev) < 0) {
1018                 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1019                           "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1020                 brcms_release_fw(wl);
1021                 brcms_remove(pdev);
1022                 return NULL;
1023         }
1024
1025         /* common load-time initialization */
1026         wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1027         brcms_release_fw(wl);
1028         if (!wl->wlc) {
1029                 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1030                           KBUILD_MODNAME, err);
1031                 goto fail;
1032         }
1033         wl->pub = brcms_c_pub(wl->wlc);
1034
1035         wl->pub->ieee_hw = hw;
1036
1037         /* register our interrupt handler */
1038         if (request_irq(pdev->irq, brcms_isr,
1039                         IRQF_SHARED, KBUILD_MODNAME, wl)) {
1040                 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1041                 goto fail;
1042         }
1043         wl->irq = pdev->irq;
1044
1045         /* register module */
1046         brcms_c_module_register(wl->pub, "linux", wl, NULL);
1047
1048         if (ieee_hw_init(hw)) {
1049                 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1050                           __func__);
1051                 goto fail;
1052         }
1053
1054         brcms_c_regd_init(wl->wlc);
1055
1056         memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1057         if (WARN_ON(!is_valid_ether_addr(perm)))
1058                 goto fail;
1059         SET_IEEE80211_PERM_ADDR(hw, perm);
1060
1061         err = ieee80211_register_hw(hw);
1062         if (err)
1063                 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1064                           "%d\n", __func__, err);
1065
1066         if (wl->pub->srom_ccode[0] &&
1067             regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1068                 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1069
1070         n_adapters_found++;
1071         return wl;
1072
1073 fail:
1074         brcms_free(wl);
1075         return NULL;
1076 }
1077
1078
1079
1080 /**
1081  * determines if a device is a WL device, and if so, attaches it.
1082  *
1083  * This function determines if a device pointed to by pdev is a WL device,
1084  * and if so, performs a brcms_attach() on it.
1085  *
1086  * Perimeter lock is initialized in the course of this function.
1087  */
1088 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1089 {
1090         struct brcms_info *wl;
1091         struct ieee80211_hw *hw;
1092
1093         dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1094                  pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1095                  pdev->irq);
1096
1097         if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1098             (pdev->id.id != BCMA_CORE_80211))
1099                 return -ENODEV;
1100
1101         hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1102         if (!hw) {
1103                 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1104                 return -ENOMEM;
1105         }
1106
1107         SET_IEEE80211_DEV(hw, &pdev->dev);
1108
1109         bcma_set_drvdata(pdev, hw);
1110
1111         memset(hw->priv, 0, sizeof(*wl));
1112
1113         wl = brcms_attach(pdev);
1114         if (!wl) {
1115                 pr_err("%s: brcms_attach failed!\n", __func__);
1116                 return -ENODEV;
1117         }
1118         return 0;
1119 }
1120
1121 static int brcms_suspend(struct bcma_device *pdev)
1122 {
1123         struct brcms_info *wl;
1124         struct ieee80211_hw *hw;
1125
1126         hw = bcma_get_drvdata(pdev);
1127         wl = hw->priv;
1128         if (!wl) {
1129                 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1130                        __func__);
1131                 return -ENODEV;
1132         }
1133
1134         /* only need to flag hw is down for proper resume */
1135         spin_lock_bh(&wl->lock);
1136         wl->pub->hw_up = false;
1137         spin_unlock_bh(&wl->lock);
1138
1139         pr_debug("brcms_suspend ok\n");
1140
1141         return 0;
1142 }
1143
1144 static int brcms_resume(struct bcma_device *pdev)
1145 {
1146         pr_debug("brcms_resume ok\n");
1147         return 0;
1148 }
1149
1150 static struct bcma_driver brcms_bcma_driver = {
1151         .name     = KBUILD_MODNAME,
1152         .probe    = brcms_bcma_probe,
1153         .suspend  = brcms_suspend,
1154         .resume   = brcms_resume,
1155         .remove   = __devexit_p(brcms_remove),
1156         .id_table = brcms_coreid_table,
1157 };
1158
1159 /**
1160  * This is the main entry point for the brcmsmac driver.
1161  *
1162  * This function is scheduled upon module initialization and
1163  * does the driver registration, which result in brcms_bcma_probe()
1164  * call resulting in the driver bringup.
1165  */
1166 static void brcms_driver_init(struct work_struct *work)
1167 {
1168         int error;
1169
1170         error = bcma_driver_register(&brcms_bcma_driver);
1171         if (error)
1172                 pr_err("%s: register returned %d\n", __func__, error);
1173 }
1174
1175 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1176
1177 static int __init brcms_module_init(void)
1178 {
1179 #ifdef DEBUG
1180         if (msglevel != 0xdeadbeef)
1181                 brcm_msg_level = msglevel;
1182 #endif
1183         if (!schedule_work(&brcms_driver_work))
1184                 return -EBUSY;
1185
1186         return 0;
1187 }
1188
1189 /**
1190  * This function unloads the brcmsmac driver from the system.
1191  *
1192  * This function unconditionally unloads the brcmsmac driver module from the
1193  * system.
1194  *
1195  */
1196 static void __exit brcms_module_exit(void)
1197 {
1198         cancel_work_sync(&brcms_driver_work);
1199         bcma_driver_unregister(&brcms_bcma_driver);
1200 }
1201
1202 module_init(brcms_module_init);
1203 module_exit(brcms_module_exit);
1204
1205 /*
1206  * precondition: perimeter lock has been acquired
1207  */
1208 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1209                          bool state, int prio)
1210 {
1211         wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1212 }
1213
1214 /*
1215  * precondition: perimeter lock has been acquired
1216  */
1217 void brcms_init(struct brcms_info *wl)
1218 {
1219         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1220         brcms_reset(wl);
1221         brcms_c_init(wl->wlc, wl->mute_tx);
1222 }
1223
1224 /*
1225  * precondition: perimeter lock has been acquired
1226  */
1227 uint brcms_reset(struct brcms_info *wl)
1228 {
1229         BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1230         brcms_c_reset(wl->wlc);
1231
1232         /* dpc will not be rescheduled */
1233         wl->resched = false;
1234
1235         return 0;
1236 }
1237
1238 void brcms_fatal_error(struct brcms_info *wl)
1239 {
1240         wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1241                   wl->wlc->pub->unit);
1242         brcms_reset(wl);
1243         ieee80211_restart_hw(wl->pub->ieee_hw);
1244 }
1245
1246 /*
1247  * These are interrupt on/off entry points. Disable interrupts
1248  * during interrupt state transition.
1249  */
1250 void brcms_intrson(struct brcms_info *wl)
1251 {
1252         unsigned long flags;
1253
1254         spin_lock_irqsave(&wl->isr_lock, flags);
1255         brcms_c_intrson(wl->wlc);
1256         spin_unlock_irqrestore(&wl->isr_lock, flags);
1257 }
1258
1259 u32 brcms_intrsoff(struct brcms_info *wl)
1260 {
1261         unsigned long flags;
1262         u32 status;
1263
1264         spin_lock_irqsave(&wl->isr_lock, flags);
1265         status = brcms_c_intrsoff(wl->wlc);
1266         spin_unlock_irqrestore(&wl->isr_lock, flags);
1267         return status;
1268 }
1269
1270 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1271 {
1272         unsigned long flags;
1273
1274         spin_lock_irqsave(&wl->isr_lock, flags);
1275         brcms_c_intrsrestore(wl->wlc, macintmask);
1276         spin_unlock_irqrestore(&wl->isr_lock, flags);
1277 }
1278
1279 /*
1280  * precondition: perimeter lock has been acquired
1281  */
1282 int brcms_up(struct brcms_info *wl)
1283 {
1284         int error = 0;
1285
1286         if (wl->pub->up)
1287                 return 0;
1288
1289         error = brcms_c_up(wl->wlc);
1290
1291         return error;
1292 }
1293
1294 /*
1295  * precondition: perimeter lock has been acquired
1296  */
1297 void brcms_down(struct brcms_info *wl)
1298 {
1299         uint callbacks, ret_val = 0;
1300
1301         /* call common down function */
1302         ret_val = brcms_c_down(wl->wlc);
1303         callbacks = atomic_read(&wl->callbacks) - ret_val;
1304
1305         /* wait for down callbacks to complete */
1306         spin_unlock_bh(&wl->lock);
1307
1308         /* For HIGH_only driver, it's important to actually schedule other work,
1309          * not just spin wait since everything runs at schedule level
1310          */
1311         SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1312
1313         spin_lock_bh(&wl->lock);
1314 }
1315
1316 /*
1317 * precondition: perimeter lock is not acquired
1318  */
1319 static void _brcms_timer(struct work_struct *work)
1320 {
1321         struct brcms_timer *t = container_of(work, struct brcms_timer,
1322                                              dly_wrk.work);
1323
1324         spin_lock_bh(&t->wl->lock);
1325
1326         if (t->set) {
1327                 if (t->periodic) {
1328                         atomic_inc(&t->wl->callbacks);
1329                         ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1330                                                      &t->dly_wrk,
1331                                                      msecs_to_jiffies(t->ms));
1332                 } else {
1333                         t->set = false;
1334                 }
1335
1336                 t->fn(t->arg);
1337         }
1338
1339         atomic_dec(&t->wl->callbacks);
1340
1341         spin_unlock_bh(&t->wl->lock);
1342 }
1343
1344 /*
1345  * Adds a timer to the list. Caller supplies a timer function.
1346  * Is called from wlc.
1347  *
1348  * precondition: perimeter lock has been acquired
1349  */
1350 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1351                                      void (*fn) (void *arg),
1352                                      void *arg, const char *name)
1353 {
1354         struct brcms_timer *t;
1355
1356         t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1357         if (!t)
1358                 return NULL;
1359
1360         INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1361         t->wl = wl;
1362         t->fn = fn;
1363         t->arg = arg;
1364         t->next = wl->timers;
1365         wl->timers = t;
1366
1367 #ifdef DEBUG
1368         t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1369         if (t->name)
1370                 strcpy(t->name, name);
1371 #endif
1372
1373         return t;
1374 }
1375
1376 /*
1377  * adds only the kernel timer since it's going to be more accurate
1378  * as well as it's easier to make it periodic
1379  *
1380  * precondition: perimeter lock has been acquired
1381  */
1382 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1383 {
1384         struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1385
1386 #ifdef DEBUG
1387         if (t->set)
1388                 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1389                           __func__, t->name, periodic);
1390 #endif
1391         t->ms = ms;
1392         t->periodic = (bool) periodic;
1393         t->set = true;
1394
1395         atomic_inc(&t->wl->callbacks);
1396
1397         ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1398 }
1399
1400 /*
1401  * return true if timer successfully deleted, false if still pending
1402  *
1403  * precondition: perimeter lock has been acquired
1404  */
1405 bool brcms_del_timer(struct brcms_timer *t)
1406 {
1407         if (t->set) {
1408                 t->set = false;
1409                 if (!cancel_delayed_work(&t->dly_wrk))
1410                         return false;
1411
1412                 atomic_dec(&t->wl->callbacks);
1413         }
1414
1415         return true;
1416 }
1417
1418 /*
1419  * precondition: perimeter lock has been acquired
1420  */
1421 void brcms_free_timer(struct brcms_timer *t)
1422 {
1423         struct brcms_info *wl = t->wl;
1424         struct brcms_timer *tmp;
1425
1426         /* delete the timer in case it is active */
1427         brcms_del_timer(t);
1428
1429         if (wl->timers == t) {
1430                 wl->timers = wl->timers->next;
1431 #ifdef DEBUG
1432                 kfree(t->name);
1433 #endif
1434                 kfree(t);
1435                 return;
1436
1437         }
1438
1439         tmp = wl->timers;
1440         while (tmp) {
1441                 if (tmp->next == t) {
1442                         tmp->next = t->next;
1443 #ifdef DEBUG
1444                         kfree(t->name);
1445 #endif
1446                         kfree(t);
1447                         return;
1448                 }
1449                 tmp = tmp->next;
1450         }
1451
1452 }
1453
1454 /*
1455  * precondition: perimeter lock has been acquired
1456  */
1457 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1458 {
1459         int i, entry;
1460         const u8 *pdata;
1461         struct firmware_hdr *hdr;
1462         for (i = 0; i < wl->fw.fw_cnt; i++) {
1463                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1464                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1465                      entry++, hdr++) {
1466                         u32 len = le32_to_cpu(hdr->len);
1467                         if (le32_to_cpu(hdr->idx) == idx) {
1468                                 pdata = wl->fw.fw_bin[i]->data +
1469                                         le32_to_cpu(hdr->offset);
1470                                 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1471                                 if (*pbuf == NULL)
1472                                         goto fail;
1473
1474                                 return 0;
1475                         }
1476                 }
1477         }
1478         wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1479                   idx);
1480         *pbuf = NULL;
1481 fail:
1482         return -ENODATA;
1483 }
1484
1485 /*
1486  * Precondition: Since this function is called in brcms_bcma_probe() context,
1487  * no locking is required.
1488  */
1489 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1490 {
1491         int i, entry;
1492         const u8 *pdata;
1493         struct firmware_hdr *hdr;
1494         for (i = 0; i < wl->fw.fw_cnt; i++) {
1495                 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1496                 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1497                      entry++, hdr++) {
1498                         if (le32_to_cpu(hdr->idx) == idx) {
1499                                 pdata = wl->fw.fw_bin[i]->data +
1500                                         le32_to_cpu(hdr->offset);
1501                                 if (le32_to_cpu(hdr->len) != 4) {
1502                                         wiphy_err(wl->wiphy,
1503                                                   "ERROR: fw hdr len\n");
1504                                         return -ENOMSG;
1505                                 }
1506                                 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1507                                 return 0;
1508                         }
1509                 }
1510         }
1511         wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1512         return -ENOMSG;
1513 }
1514
1515 /*
1516  * precondition: can both be called locked and unlocked
1517  */
1518 void brcms_ucode_free_buf(void *p)
1519 {
1520         kfree(p);
1521 }
1522
1523 /*
1524  * checks validity of all firmware images loaded from user space
1525  *
1526  * Precondition: Since this function is called in brcms_bcma_probe() context,
1527  * no locking is required.
1528  */
1529 int brcms_check_firmwares(struct brcms_info *wl)
1530 {
1531         int i;
1532         int entry;
1533         int rc = 0;
1534         const struct firmware *fw;
1535         const struct firmware *fw_hdr;
1536         struct firmware_hdr *ucode_hdr;
1537         for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1538                 fw =  wl->fw.fw_bin[i];
1539                 fw_hdr = wl->fw.fw_hdr[i];
1540                 if (fw == NULL && fw_hdr == NULL) {
1541                         break;
1542                 } else if (fw == NULL || fw_hdr == NULL) {
1543                         wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1544                                   __func__);
1545                         rc = -EBADF;
1546                 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1547                         wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1548                                 "size %zu/%zu\n", __func__, fw_hdr->size,
1549                                 sizeof(struct firmware_hdr));
1550                         rc = -EBADF;
1551                 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1552                         wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1553                                   "%zu\n", __func__, fw->size);
1554                         rc = -EBADF;
1555                 } else {
1556                         /* check if ucode section overruns firmware image */
1557                         ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1558                         for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1559                              !rc; entry++, ucode_hdr++) {
1560                                 if (le32_to_cpu(ucode_hdr->offset) +
1561                                     le32_to_cpu(ucode_hdr->len) >
1562                                     fw->size) {
1563                                         wiphy_err(wl->wiphy,
1564                                                   "%s: conflicting bin/hdr\n",
1565                                                   __func__);
1566                                         rc = -EBADF;
1567                                 }
1568                         }
1569                 }
1570         }
1571         if (rc == 0 && wl->fw.fw_cnt != i) {
1572                 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1573                         wl->fw.fw_cnt);
1574                 rc = -EBADF;
1575         }
1576         return rc;
1577 }
1578
1579 /*
1580  * precondition: perimeter lock has been acquired
1581  */
1582 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1583 {
1584         bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1585
1586         spin_unlock_bh(&wl->lock);
1587         wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1588         if (blocked)
1589                 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1590         spin_lock_bh(&wl->lock);
1591         return blocked;
1592 }
1593
1594 /*
1595  * precondition: perimeter lock has been acquired
1596  */
1597 void brcms_msleep(struct brcms_info *wl, uint ms)
1598 {
1599         spin_unlock_bh(&wl->lock);
1600         msleep(ms);
1601         spin_lock_bh(&wl->lock);
1602 }